• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A self-retracting device for a furniture part (18) which can be pulled out of a furniture body (17) by means of a pull-out guide comprises a slide (2) which is displaceably mounted on a base body (1) and which moves against the force of a pull-in spring (3) in one pull-out direction (12) Basic position can be moved into a waiting position, in which it is held by a holding device, a driver (4) being coupled to the carriage (2) for moving the carriage (2) from the basic position to the waiting position and in the waiting position of the carriage ( 2) can be uncoupled from the carriage (2). The pull-in spring (3) acts on a lever (6) which is mounted on the base body (1) so as to be pivotable about a first pivot axis (7) and on the slide (2) about a second pivot axis (8), the lever being pivoted (6) is displaceable relative to the first pivot axis (7) or the first pivot axis (7) is displaceable relative to the base body (1).
    公开号:AT521511A4
    申请号:T385/2018
    申请日:2018-12-21
    公开日:2020-02-15
    发明作者:Wolfgang Müller Ing；Bechter Matthias
    申请人:Fulterer Ag & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a self-retracting device for a piece of furniture which can be pulled out of a furniture body by means of a pull-out guide, comprising a slide which is displaceably mounted by a base body and which, against the force of a pull-in spring, can be moved from a basic position to a waiting position in a pull-out direction, in which it can be moved by a Holding device is held, wherein for moving the carriage from the basic position into the waiting position, a driver is coupled to the carriage and can be uncoupled from the carriage in the waiting position of the carriage.
    Self-retracting devices of this type are known. Most of these are integrated in pull-out guides. For example, WO 2008/119091 A1 shows a self-retracting device of this type. A disadvantage with such self-retracting devices is that the extension of the retraction spring changes over the retracting distance, with the result that the force acting at the end of the retracting distance when the slide is in the area of its basic position is significantly lower than that in FIG Waiting position of the slide on this force acting when the driver couples to or decouples from the slide. The operator feels that the highest force that he has to operate is relevant for the ease of use. This highest force occurs when the carriage is in the waiting position (i.e. shortly before the driver is uncoupled when it is pulled out). On the other hand, the force acting on the slide in its basic position is relevant for the reliable locking of the closed drawer, which in such systems is the lowest force in the displacement of the slide. The operator is therefore forced to exert a considerably higher force to open the drawer than is necessary to reliably hold the drawer closed.
    2/43
    In order to keep the increase in force relatively flat, a pull-in spring as long as possible is used in the self-retracting device resulting from WO 2008/119091 A1, which is deflected by deflecting rollers by a total of 180 ° to reduce the required length. Such a redirection leads, among other things. to increased stress on the pull-in spring.
    The use of constant force springs (also called roller springs) is fundamentally possible and is already known. Constant force springs, however, require a relatively large installation space and have a comparatively short service life.
    WO 2013/138826 A1 discloses a closing device in which the driver cooperates not with a sliding carriage but with a closing lever which can be pivoted about a pivot axis and which is acted upon by the drawing spring. By limiting the angle over which the pull lever is pivoted, the driver being at a relatively small distance from the axis of the pull lever in the closed state of the pull-out furniture part, in conjunction with a curved slide guide for the pull lever for the driver, the force curve can be adjusted in this way that the closing force has the highest value near the closed state of the pull-out furniture part. However, the installation space required for this self-retracting device is relatively large and the pull-in distance over which the self-retracting device acts is comparatively small in comparison to self-retracting devices which use slides.
    Another closing device, in which the driver cooperates with a pivotable closing lever, is evident from DE 10 2011 051 907 A1. The pull-in spring does not act directly on the pull lever but on a further pivotably mounted lever, the connection between the pull lever and the further lever being pivotable on the pull lever
    3/43 and connecting arm attached to the other lever. In this way, the force curve can be adjusted. The disadvantage here is again the space required and the relatively small draw-in distance.
    The object of the invention is to provide an advantageous self-retracting device of the type mentioned at the outset, in which an advantageous force profile of the retracting force acting on the driver can be achieved with a relatively large retracting distance and a relatively small installation space. According to the invention, this is achieved by a self-retracting device with the features of the claim
    1.
    In the self-retracting device according to the invention, the retracting spring engages a lever which is mounted on the base body from which the slide is slidably mounted about a first pivot axis and which is mounted on the slide so as to be pivotable about a second pivot axis. Here, the lever is displaceable with respect to the first pivot axis or the first pivot axis can be displaced with respect to the base body. With this configuration, the force profile of the force exerted by the pull-in spring on the slide when it is displaced between the basic position and the waiting position can be influenced in an advantageous manner with a compact design.
    It is advantageously provided here that in the pivot position of the lever about the first pivot axis, which the lever assumes in the basic position of the slide, the lever is displaceable relative to the first pivot axis, or the first pivot axis is displaceable relative to the base body in a direction that unifies Includes angles of at most 85 °, preferably of at most 80 ° with the pull-out direction. A reduction caused by the lever of the force exerted by the pull-in spring on the slide can thereby be reduced in the area of the basic position of the slide, so that the force acting on the slide in the area of the basic position of the slide is increased compared to a conventional design of the self-retracting device, such as in the description of the figures
    4/43 will be explained in more detail. For example, one can at least use the
    Most of the draw-in distance at least approximately constant force acting on the slide can be achieved, despite the different elongation of the
    Pull-in spring.
    The first pivot axis can advantageously be formed by an axle bolt attached to the base body, which is slidably mounted in a link of the lever, or by an axle bolt attached to the lever, which is slidably mounted in a link of the base body. In the basic position of the slide, this link of the lever or of the base body is at least in a section in which the axle pin is located, oblique to the pull-out direction, thus enclosing an angle unequal to 90 ° with the pull-out direction. This angle is advantageously in the range from 50 ° to 85 °, preferably in the range from 65 ° to 80 °.
    The backdrop of the lever or the base body can be designed with a curved course. This enables a further adjustment of the spring force acting on the slide.
    In an advantageous embodiment of the invention it is provided that the pull-in spring acts on the lever in the region between the first and the second pivot axis. The lever on which the pull-in spring engages is therefore a one-armed lever. This helps to save installation space.
    The carriage is preferably coupled to the driver via a tilting part which is arranged on the carriage and can be tilted about a tilt axis. In a holding position of the tilting part, the driver is held in an intermediate space of the tilting part. In a release position of the tilting part, which the tilting part assumes in the waiting position of the slide, the driver can move out of or into the intermediate space.
    The pivoting of the tilting part about the tilting axis can in particular by means of a
    5/43
    Guide pin, which in a tilting part of the base body of the
    Self-retracting device engages, be controlled. By the interaction of the
    Guide pin with a bent portion of the tilting part guide link, the holding device for holding the carriage in the waiting position can be formed in the uncoupled state of the driver.
    Such training is known in principle, for example from the prior art mentioned in the introduction to the description. Another possibility for coupling and uncoupling the driver to the slide and for forming the holding device would be, for example, that the slide as a whole is guided by a slide guide of the base body and the slide then follows a linear displacement, which starts from the basic position into the Close to the waiting position of the carriage takes place about an (imaginary) axis, whereupon the driver can decouple. Such slides are also known as tilting slides.
    Other designs of the holding device are basically conceivable and possible. For example, a holding device could hold the carriage in its waiting position by magnetic force.
    The self-retracting device is advantageously integrated in a pull-out guide. The base body is advantageously arranged on the body rail and the driver on the pull-out rail.
    Further advantages and details of the invention are explained below with reference to the accompanying drawings. In this show:
    1 shows a self-retracting device integrated in a pull-out guide according to a first exemplary embodiment of the invention in the inserted state of the pull-out guide;
    Fig. 2 is an oblique view corresponding to Fig. 1, in the uncoupling and coupling position of the pull-out guide, in which the driver when pulling out of the slide
    6/43 uncoupled and coupled to the slide when retracting, i.e. in the
    Waiting position of the sledge;
    Fig. 3 is an oblique view corresponding to FIG. 1 in the extended state of the
    Pull-out guide;
    Fig. 4 is an end view;
    5, 6 and 7 oblique views of the rails removed from one another;
    8 is an oblique view of the pull-out rail from the opposite side;
    Fig. 9 is an enlarged detail B of Fig. 8;
    10 shows a section along the line AA from FIG. 4 in the inserted state of the pull-out guide, that is to say in the basic position of the slide;
    11 shows a section analogous to FIG. 10 in an intermediate position of the slide;
    12 shows a section corresponding to FIG. 10 in the decoupling and coupling position of the pull-out guide, that is to say in the waiting position of the slide;
    13 shows a section along the line CC from FIG. 4 in the inserted state of the pull-out guide, that is to say in the basic position of the slide;
    14 shows a section corresponding to FIG. 13 in the uncoupling and coupling position of the pull-out guide, that is to say in the waiting position of the slide;
    15, 16 and 17 are oblique views of the self-retracting device in the basic position of the slide, in an intermediate position of the slide and in the waiting position of the slide;
    18, 19 and 20 oblique views of the self-retracting device from a different viewing direction in the positions of the slide corresponding to FIGS. 15, 16 and 17;
    21, 22 and 23 oblique views of the self-retracting device from the viewing direction corresponding to the oblique views of FIGS. 15, 16 and 17 and in the positions of the slide according to FIGS. 15, 16 and 17, only the base body along the line AA of FIG 4 is cut;
    24 is an end view of the self-retracting device;
    25, 26 and 27 sections along the line DD of FIG. 24 in the positions of the slide corresponding to FIGS. 15-17;
    28 and 29 show exploded views from different viewing directions;
    30, 31 and 32 are highly schematic representations of parts of a
    7/43 self-retracting device according to the invention according to the first
    Embodiment of the invention to explain the principle of operation, in the basic position of the slide, an intermediate position of the slide and the waiting position of the slide;
    33 to 41 representations of a second exemplary embodiment of the invention analogous to FIGS. 1 to 9 of the first exemplary embodiment of the invention;
    FIG. 42 shows a section along the line EE from FIG. 36 in the inserted state of the pull-out guide, that is to say in the basic position of the slide (the pull-in spring and the damper are shown uncut);
    43 shows a section analogous to FIG. 42 in the decoupling and coupling position of the pull-out guide, that is to say in the waiting position of the slide;
    44 to 49 representations analogous to FIGS. 15-20 of the first exemplary embodiment of the invention;
    FIGS. 50 to 52 oblique views corresponding to FIGS. 44-46 and in the positions of the slide corresponding to FIGS. 44-46, only the base body being cut along the line FF in FIG. 36;
    53 shows an end view of the self-retracting device;
    54 to 56 sections along the line GG of FIG. 53 in the positions of the slide corresponding to FIGS. 44-46;
    57 and 58 are exploded views of the self-retracting device from different viewing directions;
    59, 60 and 61 are highly schematic representations of parts of a self-retracting device according to the second embodiment of the invention in the basic position of the slide, an intermediate position of the slide and the waiting position of the slide to explain the principle of operation.
    A first embodiment of the invention is shown in detail in FIGS. 1-29. 30-32 show the operating principle in a simplified and schematic manner.
    30-32 is a self-retracting device with a base body 1 and one which is displaceably mounted on the base body 1 parallel to the pull-out direction 12
    8/43
    Carriage 2 shown schematically. The carriage 2 can be displaced from a basic position into a waiting position via a displacement path. 30, the carriage 2 is in the basic position, in which it is acted upon by a pull-in spring 3. The carriage 2 is coupled to a driver 4, in the exemplary embodiment via a tilting part 5, which is in a holding position in the basic position of the carriage 2.
    The base body 1 is usually rigidly connected to the furniture body and the driver 4 is rigidly connected to the pull-out furniture part, an inverted arrangement also being possible. In particular, the base body 1 can be attached to a body rail of a pull-out guide, the body rail being attached to the furniture body and the pull-out guide furthermore having a pull-out rail attached to the pull-out furniture part. The driver 4 can be conveniently arranged on the pull-out rail.
    A lever 6 is mounted on the base body 1 so as to be pivotable about a first pivot axis 7. The lever 6 is pivotally mounted on the carriage 2 about a second pivot axis 8. The pull-in spring 3 acts on this lever 6, in the exemplary embodiment in the region between the first and the second pivot axis 7, 8.
    The force F exerted by the pull-in spring 3 is thus transmitted to the carriage 2 via the lever 6. The first lever arm s “, which acts between the point of application of the pull-in spring 3 and the first pivot axis 7, is shown, as is the second lever arm s 2 , via which the force F exerted by the pull-in spring 3 is transmitted to the slide 2. The first lever arm s is the normal distance between the point of application of the pull-in spring 3 on the lever 6 and a straight line 9 which runs parallel to the force F through the first pivot axis 7. The second lever arm s 2 is the normal distance between the second pivot axis 8 and the straight line 9.
    The force F exerted on the carriage 2 by the pull-in spring 3 is thus determined by the
    9/43
    Lever 6 stepped down, that is to say transferred to the carriage 2 in the ratio s, / s 2 .
    Since the point of application of the retraction spring 3 on the lever 6 and the point of application of the lever 6 on the slide 2 (= second pivot axis 8) lie on the same side of the first pivot axis 7, the embodiment is a one-armed lever.
    The lever 6 is displaceable with respect to the first pivot axis 7. For this purpose, in the exemplary embodiment, an axle bolt 10 which is fixed to the base body 1 and is slidably mounted in a link 11 of the lever 6 is provided. The setting 11 is formed in the exemplary embodiment by an elongated hole in the lever 6. For example, the link 11 could also be formed by an undercut groove in which a head of the axle pin 10 engages.
    If the pull-out furniture part is pulled out starting from an inserted state, the driver 4 is displaced in a pull-out direction 12, taking the slide 2 with it from the basic position of the slide 2 (FIG. 30) in the pull-out direction 12, specifically against that of the pull-in spring 3 force exerted on the carriage 2. 31 shows an intermediate position of the carriage 2 between the basic position of the carriage 2 and the waiting position of the carriage 2. In FIG. 32, the carriage 2 assumes the waiting position. In this waiting position, the driver 4 can decouple from the carriage 2. In the exemplary embodiment, the tilting part 5 is pivoted relative to the slide 2 about a tilting axis 13 relative to a holding position, which the tilting part 5 assumes in the basic position of the slide 2, into a release position. In the release position of the tilting part 5, the driver 4 can extend from a recess 14 in the tilting part 5, in which it is held in the holding position of the tilting part 5.
    After the driver 4 has been uncoupled from the carriage 2, the carriage 2 is held in the waiting position by a holding device, as is known. For example, the holding device can be formed by a guide for the tilting part
    10/43 ·· ·· ·· ·· · ·· as will be explained below with reference to FIGS. 1-29. A
    Holding device could, for example, also be brought about by magnetic force, it being possible for a magnet to be arranged on the base body 1 and / or slide 2.
    When the pull-out furniture part is pushed back in, the driver 4 moves into the recess of the tilting part 5 and pivots it back into the holding position. As a result or in another way by the retracting driver (for example by loosening the magnetic holder by the retracting driver), the holding device is released and the slide 2 is retracted from the retraction spring 3 to the basic position, taking the driver 4 with it and thus the extendable furniture part.
    In the basic position of the slide 2 and the corresponding position of the lever 6, the link 11 is inclined to the pull-out direction 12, so the center line of the link (which runs in the direction of the longitudinal extension of the link) has an angle 16 unlike 90 ° with respect to the pull-out direction 12. The lever 6 thus has, in the position which it assumes in the basic position of the carriage 2, a displaceability relative to the axle pin 10, that is to say with respect to the first pivot axis 7, in a direction 15 which includes an angle 16 not equal to 90 ° with the pull-out direction 12 . The angle 16 is preferably at most 85 ° and at least 50 °, particularly preferably the angle 16 is at most 80 ° and at least 65 °.
    The force F exerted by the pull-in spring 3 on the lever 6 is smaller in the basic position of the slide 2, in which the pull-in spring 3 is less tensioned, than in the waiting position of the slide 2. The design according to the invention makes it in the basic position on the slide 2 transmitted force of the pull-in spring 3 but raised.
    When the carriage 2 is shifted between the basic position and the waiting position, two movements are superimposed, namely on the one hand that the lever 6 is pivoted about the first pivot axis 7 and
    11/43
    on the other hand to a displacement of the lever 6 with respect to the first pivot axis 7, the direction 15 of this displacement being dependent on the respective position of the slide. When the carriage 2 is shifted from the basic position in the direction of the waiting position, in addition to the pivoting of the lever about the first pivot axis 7, the lever 6 is displaced relative to the first pivot axis 7 in a direction 15 over a first partial distance a forms an angle 16 with the pull-out direction 12, which is less than 90 °. The first section a ends at the intermediate position shown in FIG. 31, in which the connecting line of the first pivot axis 7 with the second pivot axis 8 is at right angles to the pull-out direction 12. During the further displacement over the second section b from the intermediate position into the waiting position of the carriage 2, the lever 6 moves in an opposite direction with respect to the first pivot axis 7, which includes an angle greater than 90 ° with the pull-out direction 12.
    Starting from the basic position of the slide 2, the intermediate position of the slide 2 is in the range from 30% to 80% of the total displacement path of the slide 2.
    Assuming that the link 11 would be parallel to the pull-out direction 12, then when the slide 2 was moved, the lever 6 would not be pivoted, but only the lever 6 would be displaced with respect to the first pivot axis 7. The force of the pull-in spring 3 would thus be transmitted 1: 1 to the slide 2 over the entire displacement path when the slide 2 was pulled in from the waiting position into the basic position by the pull-in spring 3. In the case of a backdrop 1 which is inclined to the pull-out direction 12 such that when the slide is pulled in in the direction of the basic position, the lever 6 is displaced relative to the first pivot axis 7 at least over part of the displacement path, in which case the lever has a movement component opposite to the pull-out direction 12 has, this movement component reduces the reduction of the force exerted by the retraction spring 3 on the lever 6 on the carriage 2. This reduction in gear
    12/43 is therefore effective over the aforementioned section a (when pulling in as well as when pulling out). By reducing the reduction, the force transmitted to lever 2 via lever 6 is increased. The lower spring force of the retraction spring 3 in the basic position of the slide 2 compared to the waiting position of the slide 2 can thus be counteracted by the reduction of the reduction in the vicinity of the basic position of the slide 2 described above.
    In addition, when the carriage 2 is shifted from the intermediate position shown in FIG. 31 into the basic position, that is to say over the partial distance a, the distance of the first pivot axis 7 from the point of application of the pull-in spring 3 and from the second pivot axis 8 increases, and thus an increase in both s and s 2 , the value of the ratio s, / s 2 becoming larger, ie the reduction becomes smaller, which further reduces the overall reduction.
    The value of the ratio s, / s 2 also increases, ie the reduction is reduced, over the second section b adjoining the first section a, which extends from the intermediate position of the slide shown in FIG. 31 to the waiting position of the slide. On the other hand, the reduction is increased in that the lever 6 is displaced in a direction 15 which includes an angle greater than 90 ° with the pull-out direction 12, that is to say has a component opposite to the movement in the pull-out direction, cf. Fig. 32. Overall, an increase in the pull-in force of the carriage can be achieved over the last section of the displacement path of the carriage towards the waiting position of the carriage.
    With the design according to the invention, the force exerted on the slide 2 in the basic position by the pull-in spring 3 can thus be increased. The force acting on the carriage 2 by the pull-in spring 3 can also be greater in the basic position than in a central region of the displacement path of the carriage.
    13/43 * · · · · · ·· «· ·· ··
    30-32, the course of the backdrop 11 is shown in a straight line. The course of the force acting on the slide 2 via the displacement path can be further modified by a curved configuration of the link 11 in order to achieve a desired force course. In particular, the link 11 can be curved in such a way that its center line is concave when viewed from the point of application of the retraction spring on the base body 1.
    A specific embodiment of the invention is shown in detail in FIGS. 1-29. The self-retracting device is integrated in a pull-out guide. In the exemplary embodiment shown, the pull-out guide comprises a body rail 19 which can be fastened to a furniture body 17, a pull-out rail 20 which can be fastened to a pull-out furniture part 18, and a middle rail 21 which is arranged between the body rail 19 and the pull-out rail 20. The rails 19-21 are displaceably guided in the exemplary embodiment shown via rollers 22. These rollers 22 are all arranged on the middle rail 21 in the exemplary embodiment, as a result of which a differential pull-out guide is formed here.
    A pull-out guide, in which a self-retracting device according to the invention is integrated, could also be designed in a different way, for example having rolling elements mounted in cages for mutually displaceable mounting of the rails, or also without a central rail (s).
    The pull-out furniture part 18 can be a drawer, for example. The pull-out furniture part 18 and the furniture body 17 are only indicated schematically in FIG. 4 by dashed lines.
    The base body 1 of the self-retracting device is fixed to the body rail, specifically in the region of the rear end of the body rail in relation to the pull-out direction 12. The carriage 2 is mounted displaceably from the base body 1 parallel to the pull-out direction 12, specifically between the basic position (see FIGS. 10, 13, 15, 18,
    14/43 ·· · · ·· ·· · ··
    21, 25) and the waiting position (see FIGS. 12, 17, 20, 23 and 27). The tilting part 5 is mounted on the slide 2 so as to be pivotable about the tilting axis 13. In the basic position of the slide 2, the tilting part 5 assumes a stop position with respect to its pivoting about the tilt axis 13, and in the waiting position of the slide 2 a release position. The pivoting of the tilting part 5 during the displacement of the carriage 2 from the basic position into the waiting position is carried out by guide pins 23, 24 arranged on the carriage 2, which interact with a tilting part guide link 25 of the base body 1, cf. particularly Figures 10-12 and 21-23. The tilting part guide link comprises two guide webs, one of the guide pins 23 being guided between them and the other of the guide pins 24 interacting with an outer surface of one of the guide bars. The lower guide web of the tilting part guide link 25 is free in the region of the front end of the tilting part guide link 25, whereby the guide pin 23 can be inserted into the space between the two guide webs during assembly.
    Starting from the area in which the guide pins 23 are in the basic position of the slide 2, the tilting part guide link 25 initially runs in a straight line. Before the carriage 2 reaches the waiting position, the guide pins 23, 24 reach a bent region of the tilting part guide link 25 when the pull-out guide is pulled out, as a result of which the tilting part 5 is pivoted about the tilting axis 13 from the holding position into the release position. The curved part of the length of the tilting part guide link 25 can be in the range of 15% to 40%, preferably 20% to 30% of the total length of the tilting part guide link 25 (the lengths being measured along the guideway formed by the guide link).
    In the holding position of the tilting part 5, the driver 4, which is formed here by a projecting web section at the rear end of the pull-out rail 20, is held in a recess in the tilting part 5, as can be seen in particular in FIG. 13. When the pull-out rail 20 is pulled out starting from the inserted state of the pull-out guide, the carriage 2 is thus initially
    15/43
    • ·· ·· ·· · · · • · ·· ·· ·· · · · taken and moved against the force of the retraction spring 3 from the basic position towards the waiting position. In a decoupling and coupling position of the pull-out rail, in which the carriage has reached the waiting position, the tilting part 5 is pivoted into the release position, in which the driver 4 can extend from the recess of the tilting part 5, cf. 14, in particular, when the pull-out rail is pulled out further, the carriage 2 remains in the waiting position, in which it is held by the interaction of the guide pin 24 with the bent region of the tilting part guide link 25, the tilting part guide link 25 can be in the area in which the guide pin 24 is in the waiting position of the carriage 2 have a small indentation (not recognizable in the figures). In this way, a holding device for the carriage 2 is formed when the carriage 2 is in the waiting position and the driver is decoupled from the carriage 2.
    If the pull-out rail 20 is pushed in again, the driver 4 abuts the tilting part 5 in the uncoupling and coupling position of the pull-out rail 20 and pivots it in the direction of its holding position. The self-locking of the guide pin 24 with respect to the tilting part guide link 25 is thereby eliminated and the pull-in spring 3 subsequently pulls the slide 2 back into its basic position, the pull-out rail 20 being carried along.
    A damper 26 is coupled to the carriage 2. This dampens the retraction movement of the carriage 2 by the retraction spring 3.
    The pull-in spring 3 engages the lever 6. This is mounted on the base body 1 so as to be pivotable about the first pivot axis 7, it being displaceable with respect to the first pivot axis 7. The first pivot axis 7 is formed by the axle bolt 10, which engages in the link 11 of the lever 6 formed by an elongated hole, cf. 10 to 12 and 24 to 27 in particular.
    Furthermore, the lever 6 is pivotally mounted on the carriage 2 about the second pivot axis 8. The pull-in spring 3 engages between the first and the
    16/43 ·· ·· ·· ·· · ·· second pivot axis 7, 8 on lever 6 and is held at the other end on the base body.
    The backdrop 11 has a curved course, i.e. the center line 27 of the backdrop, which is shown in FIGS. 25-27, is curved. If at the point where the axle pin 10 is in the basic position of the slide 2, a tangent is applied to the center line 7J (this tangent is shown as a dashed line in FIG. 10), then the direction 15 lies in which the lever 6 moves relative to the first pivot axis 7 at the beginning of the displacement of the carriage 2, starting from its basic position in the direction of its waiting position, on this tangent. The angle 16, which the direction 15 includes with the pull-out direction 12, is approximately 70 ° in the exemplary embodiment. Thus, about 30% of the force exerted by the retraction spring 3 parallel to the pull-out direction 12, resulting from tan (20 °), is transmitted directly parallel to the pull-out direction 12 and opposite thereto. Since the force acting on the lever 6 in the sense of a rotation of the lever 6 about the first pivot axis 7 is reduced by the lever 6 in the exemplary embodiment in the order of magnitude of about 1: 3, this is caused by the inclination of the link 11 Force increase in the area of the basic position of the slide 2 considerably (greater than 50%). Particularly in connection with the curved course of the link 11, taking into account the changing lever arms during the displacement of the carriage 2 between the basic position and the waiting position, a largely constant course of the spring force acting on the carriage 2 when the pull-out guide is pulled out and when the self-closing mechanism is pulled in Pull-out guide can be achieved.
    The center line 27 of the link 11 is concave as seen from the point of application of the retraction spring 3 to the base body 1, cf. e.g. 25 to 27.
    As already mentioned, the tilting part guide link 25 initially runs in a straight line at the point at which the guide pins 23, 24 are located in the basic position of the slide 2. There is a center line of the tilting part guide link
    17/43
    ·· ·· ·· ·· · ·· in this area of the tilting part guide link on a straight line 28 (see Fig. 12). The pivoting of the tilting part 5 in the last part of the displacement path of the carriage 2 from the basic position to the waiting position is performed by the interaction of the guide pin 23 with the tilting part guide link 25. The guide pin 23 is guided in the end region of the tilting part guide link 25 along a circular path, i.e. the center line of the tilting part guide link 25 lies on an arc of a circle, the center point 29 of which is indicated in FIG. 12 by a cross. The normal distance of the center 29 from the straight line 28 is greater than the normal distance of the tilt axis 13 from the straight line 28. This causes the tilting part 5 to pivot over a somewhat larger section of the movement of the slide 2. Thus, the slide 2 does not start jerkily but gradually when the pull-in rail is inserted after the coupling of the driver 4 to the tilting part 5.
    The carriage 2 also has a projection 32 which forms a stop for the central rail 21 when the pull-out rail 20 is displaced too far in the pull-out direction 12 with respect to the central rail 21.
    In the exemplary embodiment of the invention shown, the lever 6 is supported on the vertical web of the body rail 19 by means of knobs which are visible in particular from FIGS. 18-20 and 28.
    A second embodiment of the invention is shown in detail in Figs. 36-56. 59-61 show the operating principle in a simplified and schematic manner. The differences from the first exemplary embodiment are explained in particular below. Unless otherwise described, the description of the first exemplary embodiment can be used in an analogous manner. The same reference numerals are used for corresponding parts.
    Referring first to FIGS. 59-61, in a manner analogous to that in the first exemplary embodiment, a slide 2 is mounted on the base body 1 of the self-retracting device so as to be displaceable parallel to an extraction direction 12. The carriage 2 is
    18/43
    ·· ·· ·· ·· · ·· between the basic position (Fig. 59) and the waiting position (Fig. 61)
    Tilting part 5 coupled to a driver 4. In the waiting position of the slide (Fig. 61), the driver 4 can uncouple from the slide 2 (when pulling out the pull-out furniture part) or to the slide 2 (when pushing in the pull-out furniture part).
    In order to hold the slide in the waiting position after uncoupling the driver 4 against the force of the pull-in spring 3, a holding device is used, which can be designed in a manner analogous to that in the first exemplary embodiment by means of a link guide of the tilting part 5 relative to the base body 1 (not shown in FIGS Fig. 59-61).
    The pull-in spring 3 is attached to the base body 1 at one end and engages the lever 6 at the other end. The lever 6 is pivotally connected to the base body 1 about a first pivot axis 7 and pivotally connected to the carriage 2 about a second pivot axis 8. The pull-in spring 3 in turn acts on the lever 6 between the first and the second pivot axes 7, 8.
    The first pivot axis 7 is formed by an axle bolt attached to the lever 6, which engages in a link 30 of the base body 1. The backdrop 30 is formed here by an elongated hole. The first pivot axis 7 is thereby displaceable relative to the base body 1, specifically in the direction of the longitudinal extent of the link 30. The link 30 is inclined to the direction of extension. If the carriage is shifted from the basic position (FIG. 59) towards the waiting position, the first pivot axis 7 is thus displaced in a direction 15 over a first section a of the displacement path, which includes an angle 16 with the link 30, which is preferably in the range from 85 ° to 50 °, particularly preferably in the range from 80 ° to 65 °.
    In a manner analogous to that in the first exemplary embodiment, this results in a combined movement when the carriage is displaced over the partial distance a
    19/43
    ·· ·· ·· ·· · ·· of the lever 6, namely for pivoting about the first pivot axis 7 and for a displacement which has a component parallel to the direction of extension 12. When the slide 2 is pulled in by the pull-in spring 3, the force exerted by the pull-in spring 3 is reduced in relation to the movement component of the pivoting about the first pivot axis 7 in accordance with the ratio of the lever arms s / s. With regard to the movement component parallel to the pull-out direction, the component of the force exerted by the pull-in spring in this direction is transferred 1: 1 to the lever 6. The reduction s / s ^ ird is quasi reduced.
    The section a runs from the basic position of the carriage 2 to the position of the carriage 2, in which the connecting line between the pivot axes 7, 8 is at right angles to the direction of extraction 12. This position of the carriage 2 is reached just after the intermediate position shown in FIG. 60. In the further course of the displacement of the carriage 2 in the direction of the waiting position (which is shown in FIG. 61), the displacement of the first pivot axis 7 with respect to the link 30 takes place opposite to the direction 15. The force of the pull-in spring 3 is quasi further reduced thereby. Overall, the force exerted by the pull-in spring 3 on the slide 2 can be adjusted to a constant force curve compared to a direct attack by the pull-in spring on the slide.
    The ratio of the lever arms s 1 / s 2 does not change in this embodiment over the displacement of the carriage 2.
    30 to 32, the longitudinal extent of the backdrop 30 is shown in a straight line. In order to further align the force profile of the force exerted by the pull-in spring 3 on the slide 2 to a desired force profile, the link 30 can have a curved profile.
    33 to 56 show a pull-out guide equipped with a self-pulling device according to the invention in accordance with the second exemplary embodiment in detail. In an analogous manner as in the first embodiment
    20/43 the pull-in device is attached to the carcass rail 19 and the pull-out rail 20 has the driver 4. A middle rail 21 can be arranged between the carcass rail and the pull-out rail and the mutually displaceable guidance of the rails can take place via rollers 22, which in turn are all arranged here on the central rail, a differential pull-out guide being formed. The furniture body 17 and the pull-out furniture part 18 are only indicated with dashed lines in FIG. 36.
    In the exemplary embodiment, two retraction springs 3 are provided, each of which acts on the one hand on the base body 1 and on the other hand on the lever 6. As explained in principle with reference to FIGS. 30-32 above, the lever 6 is pivotably mounted about a first pivot axis 7 with respect to the base body and pivotably mounted about a second pivot axis 8 with respect to the slide 2, the first pivot axis 7 being displaceable with respect to the base body 1 , by an axle bolt 10 attached to the lever 6 being displaceably guided by the link 30 of the base body 1. The backdrop 30 is not only at an angle to the direction of extraction, but also has a curved course, the center line 27 of the backdrop 30 in this embodiment having a convex shape as seen from the point of engagement of the retracting springs 3 on the base body 1, cf. especially Figs. 54-56. As a result, the axle pin 31 reaches a portion of the link 30 in a region which extends around the position of the slide 2 in which the connecting line between the first and the second pivot axes 7, 8 is at right angles to the pull-out direction 12, in which the latter is a larger one Inclined position relative to the pull-out direction 12 than in the section assigned to the end positions of the slide 2. The change in the reduction due to the inclined position of the link 30 can thereby be increased in the area of a middle position of the slide 2.
    The guidance of the tilting part 5 relative to the base body 1 by means of the tilting part guide link 25 of the base body 1, into which a guide pin 23 of the tilting part 5 engages, can best be seen in FIGS. 50-52. Fig. 50 shows the basic position of the carriage 2, in which the tilting part 5 is in the holding position
    21/43
    ·· ·· ·· ·· · ·· is located and the driver 4 is coupled to the slide 2 via the tilting part 5. The inclusion of the driver 4 in the recess of the tilting part 5 can best be seen in FIG. 42. Fig. 51 shows the position of the slide, in which the pivoting of the tilting part 5 about the tilt axis 13 begins when the pull-out guide is pulled out. 52, the waiting position of the carriage 2 is reached, in which the driver 4 can move out of the recess of the tilting part 5, cf. Fig. 43. By the interaction of the guide pin 23 with the bent end portion of the tilting part guide link 25, the slide 2 is held against the force of the pull-in spring 3 in the waiting position when the driver 4 is uncoupled from the slide 2.
    If the driver 4 moves to the tilting part 5 when the pull-out rail 20 is pushed in, the tilting part 5 is pivoted about the tilting axis 13 from the release position in the direction of the holding position, the driver 4 moving into the recess of the tilting part 5 and the driver 4 thereby moving over the Tilting part 5 is coupled to the slide 2 and furthermore the guide pin 23 is displaced from the bent region of the tilting part guide link 25, so that the self-locking of the slide 2 is canceled. The retraction spring 3 can thus pull the carriage 2 into the basic position. This retraction is damped by the damper 26 connected to the carriage 2.
    The self-retracting device also has a “malfunction healing mechanism in the event that the carriage is already in the basic position when the retracting guide is inserted. In this case, the driver 4 runs against an inclined surface 33 of a projection 32 of the tilting part 5, as a result of which it presses two parts of the tilting part lying against one another in this area against the material elasticity and a gap is opened for moving the driver 4 into the recess of the driver 4 .
    22/43
    Legend for the reference numbers:
    Base body 29 Focus carriage 30th Backdrop Pull-in spring 31 Axle bolt Carrier 32 head Start Tilting part 33 Sloping surface
    Lever first pivot axis second pivot axis straight
    Axle bolt
    Backdrop direction
    Tilt axis recess
    direction
    angle
    Furniture body, pull-out furniture part, body rail, pull-out rail
    Middle rail
    Roller
    Guide pin
    Guide pin
    Tilt part guide link damper
    Center line
    Just
    23/43
    Patent attorneys
    Hofmann & Fechner
    * Pi.’RSjf ^ tofnBann * ·· * · * ·. *
    Dr. Thomas Fechner
    Hörnlingerstr. 3, P.O.Box 5 6830 Rankweil, Austria
    T +43 (0) 5522 73 137 F +43 (0) 5522 73 137-10 M office@vpat.at
    I www.vpat.at
    29233/33 / ss
    20181207
    权利要求:
    Claims (10)
    [1]
    Claims
    1. A self-retracting device for a furniture part (18) which can be pulled out of a furniture body (17) by means of a pull-out guide, comprising a slide (2) which is displaceably mounted on a base body (1) and which moves from a basic position into a waiting position against the force of a pull-in spring (3) in a pull-out direction (12), in which it is held by a holding device, whereby to move the carriage (2) from the basic position into the waiting position, a driver (4) is coupled to the carriage (2) and in the waiting position of the Carriage (2) can be uncoupled from the carriage (2), characterized in that the pull-in spring (3) acts on a lever (6) which is mounted on the base body (1) so as to be pivotable about a first pivot axis (7) and on the carriage (2 ) is pivotally mounted about a second pivot axis (8), the lever (6) being displaceable relative to the first pivot axis (7) or the first pivot axis (7) relative to the base body (1) can be pushed.
    [2]
    2. Self-retracting device according to claim 1, characterized in that based on the pivot position of the lever (6) about the first pivot axis (7), which the lever (6) assumes in the basic position of the carriage (2), the lever (6) Slidability relative to the first pivot axis (7) or the first pivot axis (7) has a displaceability relative to the base body (1) in a direction (15) which has an angle (16) of at most 85 °, preferably of at most 80 °, with the direction of extension (12) includes.
    [3]
    3. Self-retracting device according to claim 2, characterized in that the angle (16) is at least 50 °, preferably at least 65 °.
    24/43
    [4]
    4. Self-retracting device according to one of claims 1 to 3, characterized in that the first pivot axis (7) is formed by an axle bolt (10) attached to the base body (1), which is displaceably mounted in a link (11) of the lever (6) or is formed by an axle bolt (31) attached to the lever (6), which is displaceably mounted in a link (30) of the base body (1).
    [5]
    5. Self-retracting device according to claim 4, characterized in that the backdrop (11, 30) has a curved course.
    [6]
    6. Self-retracting device according to claim 5, characterized in that the center line (27) of the link (11) of the lever (6) from the point of application of the pull-in spring (3) on the base body (1) is concave or the center line (27) of the link (30) of the base body (1) is convex as seen from the point of application of the pull-in spring (3) on the base body (1).
    [7]
    7. Self-retracting device according to one of claims 1 to 6, characterized in that the retracting spring (3) acts on the lever (6) in the region between the first and the second pivot axis (7, 8).
    [8]
    8. Self-retracting device according to one of claims 1 to 7, characterized in that the holding device has a tilting part (5) which is pivotably mounted on the slide (2) about a tilting axis (13), the driver (4) in the on the slide (2) coupled state engages in a recess in the tilting part (5) and wherein the base body (1) has a tilting part guide link (25) from which a guide pin (23, 24) of the tilting part (5) is guided, from which when the slide is moved (2) the pivoting of the tilting part (5) about the tilting axis (13) is guided from the basic position to the waiting position.
    25/43 ·· * · ·
    [9]
    9. Self-retracting device according to claim 8, characterized in that a center line of the tilting part guide link (25) over a main portion of the tilting part guide link (25) starting from the point at which the guide pin (23, 24) is in the basic position of the slide (2), lies on a straight line (28) and over an end section of the tilting part guide link (25), in which the guide pin (23, 24) is located, when the carriage (2) reaches the waiting position, lies on a circle whose The center (29) has a larger normal distance from the straight line (28) than the tilt axis (13) of the tilt part (5).
    [10]
    10. pull-out guide comprising at least two rails which can be displaced relative to one another, of which a body rail (19) can be attached to a furniture body (17) and of which a pull-out rail (20) can be attached to a pull-out furniture part (18), characterized in that the pull-out guide is a self-retracting device one of claims 1 to 9, wherein the base body (1) is arranged on one of the rails (19, 20) of the pull-out guide and the driver (4) on another of the rails (19, 20) of the pull-out guide.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3244775B1|2018-06-27|Furniture drive
    AT509923B1|2013-12-15|FEEDING DEVICE FOR PULLING A MOVABLE FURNITURE PART
    EP1374733A1|2004-01-02|Drawer guide
    EP1500763B1|2008-02-27|Interlock arrangement for preventing the simultaneous opening of several drawers
    AT513608B1|2014-06-15|Pull-out guide for a piece of furniture which can be pulled out of a furniture carcass
    AT505053B1|2009-02-15|ROLLER Differential extension
    AT413473B|2006-03-15|SELF FEED DEVICE
    DE112008004152T5|2012-08-09|Movable wind deflector
    EP1384420B1|2006-03-15|Damped self closing mechanism
    AT521511B1|2020-02-15|Selbsteinziehvorrichtung
    DE102011114442A1|2013-03-28|Center armrest for use in vehicle, has bolt element that is arranged at armrest portion and adjusted by operating element between engaging and disengaged positions with attachment at counter bearing which is arranged at bracket element
    EP2074909B1|2010-06-23|Extending roller guide
    AT509331B1|2011-08-15|EXTRACTION DEVICE FOR AT LEAST TWO REMOVABLE FURNITURE PARTS
    EP2618698B1|2014-11-19|Device for adjusting the inclination of a movable furniture part, and piece of furniture
    AT515690A4|2015-11-15|pull-out
    AT523820B1|2021-12-15|Locking device for drawers
    WO2019033136A1|2019-02-21|Drawer pull-out guide
    AT523706B1|2021-11-15|Self-retracting device for a pull-out piece of furniture
    EP3381325B1|2021-06-23|Pull-out guide for a furniture part which can be pulled out of a basic furniture structure
    AT523910B1|2022-01-15|Differential pull-out guide for pull-out furniture parts
    AT14959U1|2016-09-15|removal barrier
    AT523429B1|2021-08-15|Self-retracting device
    AT523909A4|2022-01-15|pull-out guide
    EP2449922B1|2013-07-31|Furniture
    AT14960U1|2016-09-15|removal barrier
    同族专利:
    公开号 | 公开日
    AT521511B1|2020-02-15|
    WO2020124104A1|2020-06-25|
    EP3897295A1|2021-10-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0951848A1|1998-03-27|1999-10-27|Julius Blum Gesellschaft m.b.H.|Catch device for a door wing or a drawer|
    EP1374733A1|2002-06-22|2004-01-02|Grass GmbH|Drawer guide|
    WO2008062716A1|2006-11-24|2008-05-29|Nifco Inc.|Retraction mechanism|
    AT508140A4|2009-10-29|2010-11-15|Blum Gmbh Julius|IN OR EXHAUST DEVICE FOR MOVING A MOVABLE FURNITURE PART|
    AT505053B1|2007-04-02|2009-02-15|Fulterer Gmbh|ROLLER Differential extension|
    DE102011051907A1|2011-07-18|2013-01-24|Horst Lautenschläger|Retraction device for movable furniture components, particularly drawers, comprises movable carrier brought into releasable engagement with furniture component, where damping unit and spring unit stand in operative connection with carrier|
    AT512415B1|2012-03-20|2013-08-15|Fulterer Gmbh|Catching device for a movably mounted furniture part|AT523429B1|2020-06-10|2021-08-15|Fulterer Ag & Co Kg|Self-retracting device|
    AT523706B1|2020-06-25|2021-11-15|Fulterer Ag & Co Kg|Self-retracting device for a pull-out piece of furniture|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA385/2018A|AT521511B1|2018-12-21|2018-12-21|Selbsteinziehvorrichtung|ATA385/2018A| AT521511B1|2018-12-21|2018-12-21|Selbsteinziehvorrichtung|
    EP19835581.0A| EP3897295A1|2018-12-21|2019-11-06|Self-retracting device|
    PCT/AT2019/000032| WO2020124104A1|2018-12-21|2019-11-06|Self-retracting device|
    [返回顶部]