• 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:
    The invention relates to a telescoping spindle drive (1) with an outer support tube (7), with at least one spindle tube (8) and with an inner spindle (9), which are each guided via at least one spindle nut such that a rotational movement of the at least one support tube (8) or the spindle (9) can be converted into a longitudinal extension or retraction movement. It is characteristic of the spindle drive (1) according to the invention that at least one spring element (15, 16) which can be compressed against a restoring force is assigned to the spindle drive (5, 6) between, on the one hand, the at least one spindle tube (8) and / or the spindle (9 ) And on the other hand, with the spindle thread of this spindle tube (8) and this spindle (9) meshing spindle nut is effective.
    公开号:CH707352B1
    申请号:CH01604/13
    申请日:2013-09-18
    公开日:2017-11-30
    发明作者:Jäger Odin；Seifritz Ralf
    申请人:B Ketterer Söhne Gmbh & Co Kg；
    IPC主号:
    专利说明:

    Description: The invention relates to a telescopic spindle drive according to the preamble of patent claim 1 and to a table furniture with a telescopic spindle drive according to the preamble of patent claim 10.
    Various furniture is already known which has an actuating or working surface in which the table top serving as a work surface is height-adjustable by means of a height adjustment device, which height adjustment device has at least one length-adjustable table leg for this purpose. In order to change the length of the table leg and thereby adjust the working height of the table top, a motor or manually drehan-drivable spindle drive is provided in at least one table leg.
    However, such spindle drives, the only one threaded spindle, a thus meshing spindle nut and connected to the spindle nut Stützrohraweise, however, often do not provide the required travel to raise the table top of a work table to the desired maximum working height.
    It has therefore already been created telescopic spindle drives of the type mentioned, having an outer support tube, a provided with an internal thread and an external thread spindle tube and an internal spindle. The support tube, the spindle tube and the spindle are each guided by a spindle nut in such a way that a rotational movement of the support tube or the spindle in a longitudinal extension or retraction of the telescopic spindle drive can be implemented. Since add to these telescopic spindle drives the travel of the interacting components, with these telescopic spindle drives and large maximum working heights can be achieved.
    In order to reduce the force required for the extension movement, such spindle drives have already been connected to gas springs, which are held with their spring ends at the ends of the spindle drive. In the case of telescopic spindle drives, however, telescopic gas springs of the latest design are required, which are comparatively complicated and expensive.
    It is therefore an object to provide a telescopic spindle drive of the type mentioned above, which is characterized by a power-assisted and correspondingly smooth extension movement. In addition, there is also the task of creating a table furniture with a table top, which is height adjustable by a height adjustment, which has at least one telescopic spindle drive.
    This object is achieved by a telescopic spindle drive according to the features of claim 1.
    The telescopic spindle drive has an outer support tube and at least one spindle tube. The spindle tube carries outside circumference an external thread and at its one end of the tube a spindle nut having an internal thread. In the internal thread of the inner, the smallest tube diameter having spindle tube a rod-shaped spindle is guided with its external thread rotatable. The support tube, the at least one spindle tube and the inner spindle are each guided via at least one spindle nut in such a way that a rotational movement of the support tube or the spindle in a longitudinal extension or retraction of the telescopic spindle drive can be implemented. The present invention now makes use of the fact that a rotational movement in one of the stages of the multi-stage telescopic spindle drive is transmitted and implemented as a rotational movement on the other stages of this spindle drive. Now, if the extension movement is supported in at least one of these stages, this support is noticeable in the other stages of the inventive spindle drive. In the inventive spindle drive is therefore provided that this spindle drive has at least one, compressible against a restoring force spring element which is effective between on the one hand a spindle tube and / or the spindle and on the other hand with the spindle thread of this spindle tube or spindle spindle nut. In this case, according to the invention, a spring element can be effective, for example, between the spindle tube and the spindle nut meshing with the spindle thread of this spindle tube. In addition or instead, it is possible according to the invention that at least one such compressible against a restoring force spring element between the spindle and the meshing with the spindle thread of this spindle spindle nut is effective.
    In order to design the inventive spindle drive with the most effective support during the extension movement, it is advantageous if the spindle drive is assigned at least one, compressible against a restoring spring element, with its end to the spindle tube or the spindle and with its other end is connected to the spindle thread meshing with the spindle nut. A particularly simple and powerful support provides that the at least one spring element is designed as a gas pressure spring.
    In order to prevent jamming of the inventive spindle drive forming and nested components and to avoid malfunction as far as possible, it is provided that in each case at least one spring element is provided on opposite longitudinal sides of the spindle drive.
    In a telescopic spindle drive, the frictional forces between the spindle thread of the spindle tube or the spindle and the thus meshing spindle nut can be too large to compensate for these frictional forces by means of a spring element or with the aid of two spring elements in only one stage of the spindle drive and overcome , A preferred development according to the invention therefore provides that at least two spring elements are provided, of which a first spring element between the at least one spindle tube and the spindle thread meshing with the spindle thread spindle nut and of which a second spring element between the spindle and with the spindle meshing spindle nut is effective. In this further embodiment, the extension movement of the spindle drive is supported in several and preferably in all stages, whereby a trouble-free operation of the inventive spindle drive is further favored.
    Since the spring elements provided in the individual stages for supporting opposite and thus cancel each other can have effective directions, it may be advantageous if the first spring element compared to the second spring element has a different pressure or restoring force.
    In this case, a particularly advantageous and functionally reliable embodiment according to the invention provides that the spindle thread of the spindle tube compared to the spindle or the spindle thread of the spindle compared to the spindle or the spindle thread of the spindle compared to the spindle tube has a flatter spindle pitch, and that this flatter spindle thread pitch associated with the spring element with the higher and preferably twice as high pressure or restoring force.
    Gas pressure springs have already been created in which the pressure piston guided in the guide cylinder of the gas pressure spring can be blocked at any point of the spring travel when required with the aid of a blocking device. A particularly advantageous embodiment according to the invention therefore provides that at least one gas spring can be blocked in any position of the spring travel. If the inventive spindle drive therefore used for example for the height adjustment of a piece of furniture, the working height of the piece of furniture can be blocked in the desired height, so that subsequently the working surface of this piece of furniture in the desired height can be loaded.
    In the table furniture of the type mentioned above, the inventive solution is that the table top of this table furniture is height adjustable via a height adjustment, which has at least one telescopic spindle drive, which is configured as described above.
    It provides a particularly powerful and resilient construction according to the invention, that the table top is supported by means of at least one leg of the table, which is designed by means of a telescopic spindle drive in the manner described above.
    It when the table top is supported by means of at least two legs, and when each table leg is designed adjustable in height by means of a telescopic spindle drive, which spindle drives are in driving connection with each other is particularly advantageous.
    The invention will be described in more detail with reference to preferred embodiments.
    It shows:
    1 shows a table furniture with a table top, which is height-adjustable by means of a height adjustment device, which height adjustment device has at least one telescopic spindle drive, these spindle drives being provided in the table legs spaced from each other and acting on the narrow sides of the table top,
    Fig. 2: located in the left in Fig. 1 table leg telescopic spindle drive in a perspective
    Side view in extended state,
    3: the in the spindle drive of FIG. 2 in an exploded perspective detail view,
    Fig. 4: provided in Fig. 1 right table leg telescopic spindle drive in a perspective
    Side view in retracted state,
    5 shows the spindle drive from FIG. 4 in an exploded perspective single-image representation, FIG.
    6 shows a work table which, in contrast to the motorized height adjustment drive shown in FIG. 1, has a manually actuatable height adjustment device here, FIG.
    Fig. 7: a comparable with Fig. 1 table furniture with a table top, which is also height adjustable via a Höhenverstelleinrich device, the height adjustment also here has at least a telescopic spindle drive, and these spindle drives also in the table furniture shown in Fig. 7 in each other spaced and provided on the narrow sides of the table top attacking legs are provided
    8 shows one of the spindle drives of the height adjustment device of the table-top furniture shown in FIG. 7 in a perspective view,
    Fig. 9: the spindle drive shown in Figure 8 in a longitudinal section, wherein the spindle drive is in an extended position, and
    10 shows the spindle drive from FIGS. 8 and 9 in an exploded perspective side view.
    In Figs. 1,6 and 7 table furniture 1, 100, 101 are shown with a height adjustment, which serves for the height adjustment of the table top 2 of this table furniture 1, 100, 101. The table furniture 1, 100, 101 each have two legs 3, 4, in which the height adjustment is integrated. For this purpose, a telescoping spindle drive 5, 6 is provided in each of the table top 2 on opposite narrow sides supporting table legs 3, 4. Each of the telescopic spindle drives 5, 6 has an outer support tube 7 and at least one spindle tube 8, which carries spindle tube 8 at its outer tube circumference of an external thread. In the spindle tube 8 of each spindle drive 5, 6 with the smallest pipe diameter, a rod-shaped spindle 9 is provided, which also has an external thread. The support tube 7, the at least one spindle tube 8 and the spindle 9 are guided into each other via at least one spindle nut so that a rotational movement of the support tube 8 or the spindle 9 in a longitudinal extension or retraction of the telescopic spindle drive 5, 6 can be implemented.
    While the spindle drive 5 in the right in Fig. 1 table leg in Figs. 4 and 5 is shown in more detail, which is located in Fig. 1 in the left table leg 4 spindle drive 6 in Fig. 2 and 3 shown in more detail. At the open ends of each support tube 7 is a spindle nut rotatably held, which meshes with the external thread of the guided therein spindle tube 8. In the tube interior of the support tube 7, a spindle nut is provided, which may be held on the tube end facing away from the support tube 7 of the spindle tube 8. This, with the spindle tube 8 fixedly connected spindle nut meshes with the provided on the rod-shaped spindle 9 external thread.
    At the upper, the table top 2 facing ends of the spindle drives 5, 6, a deflection gear 10, 11 is provided in each case. The deflection gear 10, 11 of the spindle drives 5, 6 are connected via a common drive shaft 12 in drive connection. This drive shaft 12 is rotationally drivable by a drive motor 13. While the deflection gear 11 acts on the spindle 9 in the spindle drive 6 shown in FIGS. 2 and 3 or FIGS. 7 to 10, the deflection gear 10 of the spindle drive 6 shown in FIGS. 4 and 5 is in drive connection with the support tube 7. While the support tube 7 of the spindle drive 5 shown in Fig. 2 and 3 or Fig. 7 to 10 is rotatably held on the bottom side, in the spindle drive 6 shown in Figs. 4 and 5, the spindle 9 rotatably connected to a bottom plate 14.
    In the table furniture 1, 100, 101 shown here, the rotational movement in one of the stages of the multi-stage telescopic spindle drives 5, 6 is transmitted and implemented as a rotary motion on the other stages of this spindle drive 5, 6, so that the extension movement now in at least one These levels can be supported so that this support is noticeable in the other stages of these spindle drives 5, 6. Each of the spindle drives 5, 6 therefore has at least one, against a restoring force compressible spring element 15,16 connected between on the one hand a spindle tube 8 or the spindle 9 and on the other hand with the spindle thread or external thread of this spindle tube 8 or spindle 9 meshing spindle nut is. The compressible against a restoring force spring elements 15,16 are held immovable in the longitudinal direction with its one end relative to the support tube 7, the at least one spindle tube 8 or the spindle 9 and with its other end portion relative to the spindle thread meshing with the spindle nut. The spring elements are designed here as gas springs 15, 16. In order to avoid tilting of the spindle drives 5, 6 during the extension movements, a spring element 15, 16 are provided here on opposite longitudinal sides of the spindle drives 5, 6. Thus, the length of the spindle drive 5, 6 in the retracted state corresponds approximately to the length of compressed in its initial position spring element 15, 16, it is advantageous if the spring elements 15,16 between on the one hand the support tube 7 carried by the spindle nut and on the other hand meshing with this spindle nut Spindle tube 8 is held.
    In Figs. 6 and 7 it is shown that such a spindle drive 5, 6 can be used in all height-adjustable table furniture, in which the extension movement of the height adjustment is to be supported by force. While the height adjustment device in the table furniture 1 shown in FIG. 1 has a drive motor 13, in the table furniture 100, 101 shown in FIGS. 6 and 7, a manually operable height adjustment device is provided. The table furniture 100,101 according to FIGS. 6 and 7 has to a manual release 17, which dissolves provided in the reversing transmissions 10,11 brake devices and releases the drive connection between the actuators when the table furniture 100,101 power assisted to be moved upwards.
    The table furniture 101 shown in Fig. 7 has two identically designed spindle drives 5, 6, which are each housed protected in a table leg 3, 4. The spindle drives 5, 6 of the table furniture 101 shown in FIG. 7 also have an outer support tube 7, at least one spindle tube 8 and an inner spindle 9, each having at least one spindle nut 18, which can be seen in the detail longitudinal section in FIG , 19 are so intertwined that a rotational movement on the spindle 9 in a longitudinal extension or retraction of the telescopic spindle drive 5, 6 can be implemented. In this case, the spindle drive 5, 6 shown in FIGS. 7 to 10 are associated with two compressible against a restoring force spring elements 15, 16, which are also configured here as a gas pressure springs. While a first spring element 15 between the at least one spindle tube 8 and the meshing with the outer spindle thread of this spindle tube 8 spindle nut 18 is effective, the second spring element 16 between the spindle 9 and the spindle 9 meshing with the spindle nut 19 is provided. In this case, the first spring element 15 in comparison to the second spring element 16 has a different pressure or restoring force. A particularly advantageous and functionally reliable embodiment according to the invention is that the spindle thread of the spindle tube 8 in comparison to the spindle 9 or the spindle thread of the spindle 9 in comparison to the spindle tube 8 has a flatter spindle pitch and that this flatter spindle pitch the spring element 15 or 16 with the associated with higher and preferably twice as high pressure or restoring force. In Figs. 8
    权利要求:
    Claims (13)
    [1]
    and 10 it is indicated that at least one of the gas pressure springs, and preferably only that gas pressure spring 16, the piston rod of the table top and the transmission gear faces, by means of a blocking device in any position of the spring travel is blocked. By blocking the gas spring 16 in the selected position of the spring travel, the table top of the table furniture can be positioned and set at the desired height. In Fig. 9 it can be seen that the table legs 3.4 each have three telescopically intertwined and designed as pipe sections table leg segments 21, 22 and 23. In this case, the spindle tube 8 is rotatably mounted in a cladding tube 20 which is fixedly connected to a central table leg segment 22 and the spindle nut 19. On the immersed in the spindle tube 8 spindle end of the spindle 9, a driver 24 is rotatably held, which is rotationally fixed in the tube interior of the spindle tube 8, but guided in the longitudinal direction displaceable. A rotational movement of the spindle 9 is thus transmitted in a rotary motion to the spindle tube 8, so that the spindle tube 8 remains in the middle table leg segment 22, while the spindle 9 and the support tube 7 move in opposite directions to the spindle tube 8 toward or away , In contrast, an embodiment is shown in FIGS. 7, 8 and 9, in which for fixing the selected table height of at least one of the actuators 5, 6 and / or the drive connection between the actuators 5, 6 can be blocked. The spindle drives 5, 6 shown here are characterized by the fact that in them an extension movement can be supported in a simple way power without costly telescopic gas springs would be required. claims
    1. Teleskopierbarer spindle drive (5, 6) having an outer support tube (7), with at least one therein spindle tube (8) having an inner spindle (9), which in each case via at least one spindle nut (18, 19) are guided in-each other in that a rotational movement of the at least one support tube (7) or the spindle (9) can be converted into a longitudinal extension or retraction movement, characterized by at least one first and second spring element (15, 16) compressible against a restoring force, each between the one hand at least one spindle tube (8) and the spindle (9) and on the other hand, with the spindle thread of this spindle tube (8) or this spindle (9) meshing spindle nut (18, 19) are effective.
    [2]
    2. Spindle drive according to claim 1, characterized in that the at least one first and the at least one second spring element (15, 16) with its end portion with the spindle tube (8) or the spindle (9) and with its other end portion with the with Spindle thread meshing spindle nut (18, 19) is connected.
    [3]
    3. Spindle drive according to claim 1 or 2, characterized in that at least one of the spring elements (15, 16) is designed as a gas pressure spring.
    [4]
    4. Spindle drive according to one of claims 1 to 3, characterized in that on both sides of the spindle drive (5, 6) in each case at least one first or a second spring element (15, 16) is provided.
    [5]
    5. Spindle drive according to one of claims 1 to 4, characterized in that the at least one first and the at least one second spring element (15,16) facing away from each of the spindle nut (18,19) end portions of support tube (7) and spindle tube ( 8) or by spindle tube (8) and spindle (9) is held.
    [6]
    6. Spindle drive according to one of claims 1 to 5, characterized in that of the at least one first and at least one second, the first spring element (15) between the at least one spindle tube (8) and with the spindle thread of this spindle tube (8) meshing spindle nut (18) and the second spring element (16) between the spindle (9) and the spindle (9) meshing with the spindle nut (19) is effective.
    [7]
    7. Spindle drive according to one of claims 1 to 6, characterized in that the first spring element (15) compared to the second spring element (16) has a different pressure or restoring force.
    [8]
    8. Spindle drive according to claim 7, characterized in that the spindle thread of the spindle tube (8) compared to the spindle (9) or the spindle thread of the spindle (9) compared to the spindle tube (8) has a flatter spindle pitch, and that this flatter spindle pitch that spring element (15, 16) is associated with higher and preferably twice as high pressure or restoring force.
    [9]
    9. Spindle drive according to one of claims 3 to 8, characterized in that the gas spring can be blocked in any position of the spring travel.
    [10]
    10. table furniture (1,100,101) with a table top (2), which is height adjustable via a height adjustment, which height adjustment at least one telescopic spindle drive (5, 6), which spindle drive (5, 6) according to one of claims 1 to 5 is configured.
    [11]
    11. Table furniture according to claim 10, characterized in that the table top (2) by means of at least one table leg (3, 4) is supported, which table leg (3, 4) by means of the telescopic spindle drive (5, 6) is designed adjustable in height.
    [12]
    12. Table furniture according to claim 10 or 11, characterized in that the table top (2) by means of at least two legs (3, 4) is supported, and that each table leg (3.4) by means of the corresponding telescopic spindle drive (5, 6) adjustable in height is, wherein the spindle drives (5, 6) are in driving connection with each other.
    [13]
    13. Table furniture according to claim 12, characterized in that the drive connection of the spindle drives (5, 6) is blockable.
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    同族专利:
    公开号 | 公开日
    DE102012024805A1|2014-06-26|
    DE102012024805B4|2019-08-22|
    CH707352A2|2014-06-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE9413740U1|1994-08-25|1996-01-04|Kober Ag|Two-stage spindle drive for converting a rotary movement into a linear movement|
    DE29520182U1|1995-12-20|1996-02-08|Bz Plankenhorn Gmbh & Co Kg|Height adjustable table|CN106523634B|2016-12-07|2019-02-01|上海宇航系统工程研究所|A kind of bi-directional expansion mechanical arm of multi-stage hollow lead screw transmission|
    US10758039B2|2018-06-11|2020-09-01|Workrite Ergonomics, Inc.|Platform with adjustable height|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012024805.9A|DE102012024805B4|2012-12-19|2012-12-19|Telescopic spindle drive and table furniture with a telescopic spindle drive|
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