• 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 device has two clamping parts 5, 7 which are hingedly connected to two connecting arms 9, 11 which are hingedly connected to a coupling part 13 to which a carabiner can be attached. The device further has a pawl 25 which is rotatably present on the coupling part. The braking principle is based on the two clamping parts that are pressed towards each other by the geometry of the device in the event of a fall. In the neutral position, the distance between the two clamping parts will be smaller than the cable diameter. In order to increase the distance in order to get the cable between the two clamping parts, the coupling part to which the carabiner is connected must be raised. The catch serves primarily as a lock. This is to prevent the mechanism from folding open when the user climbs.
    公开号:NL2016911A
    申请号:NL2016911
    申请日:2016-06-07
    公开日:2017-08-11
    发明作者:Van Den Herik Peter
    申请人:Xsplatforms B V；
    IPC主号:
    专利说明:

    Device for stopping a fall while climbing or descending along a cable DESCRIPTION:
    FIELD OF THE INVENTION
    The invention relates to a device (fall arrester) for stopping a fall while climbing up or descending along a cable, comprising: two elongated clamping parts which are present at a distance from each other and which are present on either side of the cable during use and sliding over the cable, wherein each of these clamping parts is provided with a clamping surface, which clamping surfaces are opposite and facing each other, and wherein each of the clamping parts is longitudinally provided with two ends, two connecting arms spaced apart from each other present, wherein each clamping part is hingedly connected to the connecting arm, and a coupling part to which a carabiner can be attached and which is hingedly connected to one of the ends of each of the connecting arms.
    State of the art
    Such a device is known from DE3216231A. In this known device, viewed in the longitudinal direction of the clamping parts, the connecting arms are connected to the clamping parts in the middle of the clamping parts and the connecting arms, viewed in the longitudinal direction of the clamping parts, are spaced apart from one another. This device has a number of parts which move relative to each other in the event of a fall in order to block the device against downward movement over a cable. If these parts cannot move / rotate smoothly, the effect will be adversely affected.
    Summary of the invention
    An object of the invention is to provide a device of the type described in the preamble which is simple, robust and reliable. To this end, the device according to the invention is characterized in that: seen in the longitudinal direction of the clamping members, the connecting arms are spaced apart from one another, and each clamping member with one of the ends is hingedly connected to one of the connecting arms and with the other end to the other connecting arm.
    The clamping parts are preferably parallel to each other and the color surfaces are elongated and also parallel to each other.
    An embodiment of the device according to the invention is characterized in that the pivot points of the clamping parts with one of the connecting arms, viewed in the longitudinal direction of the cable present between the clamping parts during use, are spaced apart, the lower of the two pivoting points between both ends of the connecting arm and the first end of the connecting arm connected to the coupling part is present on the same side of the cable as this lowest hinge point, so that when the coupling part is moved downwards relative to clamping parts, the clamping surfaces move towards each other, and upon upward displacement of the coupling part relative to clamping parts, the clamping surfaces move away from each other.
    A further embodiment of the device according to the invention is characterized in that the device furthermore comprises a pawl which is rotatably present on the coupling part about an axis of rotation and is rotatably connected to the coupling part between said first ends of the connecting arms. This pawl is for preventing the clamping parts from coming into contact with each other to the release position in which the device of the cable can be taken when climbing upwards. If the user wants to remove the device from the cable, he must push the catch away. This pawl is provided with a free end that is movable between: a displacement position in which the clamping parts press lightly against the cable and the device cannot be taken off the cable, and in which the pawl an upward displacement of the coupling part relative to the clamping parts in the presence of the device on a cable, a clamping position in which the clamping parts forcefully press against the cable, and a release position in which the pawl permits an upward displacement of the coupling part relative to the clamping parts in the presence of the device on a cable so that the device can be taken from the cable.
    The device preferably comprises a spring which presses the pawl to the clamping position. This spring ensures that the catch returns to the original position (clamping position) when it is released. The spring also ensures that, in the clamping position, the cable is (slightly) clamped in, so that the user, in the event of a fall, catches up with the device and the braking principle can come into effect.
    A still further embodiment of the device according to the invention is characterized in that the pawl is provided with a pin which is displaceable during rotation of the pawl between the clamping position and the release position in a curved groove present in the coupling part, and that the coupling part comprises a blocking element comprises that when the device is placed upside down on a cable, it falls into the groove under the influence of gravity and prevents movement of the pin through the groove and thereby blocks the catch. This pin must ensure that the clamping parts cannot collapse to the release position when the device is placed upside down on the cable. The gravity and freedom of movement of this pin ensure that the pawl is locked against rotation in this position and therefore the clamping parts cannot be moved away from each other.
    Brief description of the drawings
    The invention will be explained in more detail below with reference to an exemplary embodiment of the device according to the invention shown in the drawings. It shows:
    Figure 1 shows an embodiment of the device according to the invention in side view;
    Figure 2A shows the device shown in Figure 1 in bottom view;
    Figure 2B shows a detail of clamping surfaces of a different design;
    Figure 3 shows the device shown in Figure 1 in perspective;
    Figure 4 shows the device in the moving position;
    Figure 5 shows the device in clamping position;
    Figure 6 shows the device in the release position;
    Figure 7 the device upside down in the moving position;
    Figure 8 shows a detail of Figure 7 at the location of the blocking element;
    Figure 9 the device upside down in release position; and
    Figure 10 shows a detail of Figure 9 at the location of the blocking element.
    Detailed description of the drawings
    In figures 1, 2A and 3, an embodiment of the device according to the invention for stopping a fall while climbing up or descending along a cable is shown in various views in the presence of a cable. The device 1 has two elongated clamping parts 5 and 7 which are present parallel to and at a distance from each other and which, during use, are present on either side of the cable 3 and slide over the cable. Each of these clamping parts is provided with an elongated clamping surface 6 and 8, which are also parallel to each other. These clamping faces are present opposite each other and facing each other. The device 1 furthermore has two spaced apart connecting arms 9 and 11 which connect the clamping parts 5 and 7 to each other and to a coupling part 13. Here, each clamping part is hingedly connected with one end 5a, 7a with the connecting arm 9 and with the other end 5b, 7b with the other connecting arm 11, and the coupling part 13 is hinged with an end 9a, 11a of each of the connecting arms connected. A carabiner 15 can be attached to the coupling part 13.
    The two hinge points 17 and 19 and 21 and 23, respectively, of each of the clamping parts 5 and 7 with one of the connecting arms 9 and 11 are spaced apart, viewed in the longitudinal direction of the cable 3. The lower of the two pivot points 19 and 23 respectively is present between both ends 9a and 9b and 11a and 11b of the connecting arm 9 and 11 respectively and the first end 9a and 11a of the connecting arm connected to the coupling part 13 is on the same side of the cable 3 present as this lowest pivot point 19 and 23. Upon downward displacement of the coupling part 13 relative to the clamping parts 5 and 7, this geometry will cause the clamping surfaces 6 and 8 to move towards each other and upon upward displacement of the coupling part 13 the clamping surfaces 6 and 8 will move away from each other relative to clamping parts 5 and 7.
    The clamping surfaces 6 and 8 are smooth curved surfaces. In order to increase the grip on the cable 3, these clamping surfaces can also be designed as straight surfaces. This is shown in Figure 2A in which the clamping surfaces 6 'and 8' of an alternative device Γ are designed with a V-shaped cross section. The clamping surfaces can also be roughened or provided with teeth to increase the grip on the cable.
    The device furthermore has a pawl 25 which is rotatable about an axis of rotation 27 which is present on the coupling part 13 between the first ends 9a and 11a of the connecting arms 9 and 11. This pawl is for preventing the clamping parts from coming into contact with each other to the release position in which the device of the cable can be taken when climbing upwards. If the user wants to remove the device from the cable, he must push the catch away. A torsion spring 29 ensures that the pawl 25 returns to its original position when it is released. The torsion spring also ensures that, in the clamping position, the cable is (slightly) clamped, so that the user, in the event of a fall, catches up with the device and the braking principle can come into effect.
    In order to further clarify the operation of the device and of the pawl, Figures 4, 5 and 6 show the device in clamping position, displacement position and release position, respectively. In the moving position A (Figure 4), the clamping parts 5 and 7 are pressed lightly against the cable 3 in that the pawl 25 presses against the clamping part 7 with a free end 25a against the clamping part 7 due to the presence of the torsion spring 29. In this position, the pawl 25 prevents an upward movement of the coupling part 13 relative to the clamping parts 5 and 7, as a result of which the device 1 cannot be taken from the cable 3. In order to press the clamping parts harder against the cable, an additional torsion spring 30 (see figure 4) can be provided, for example about pivot point 19 (or for example about pivot point 23) which supports one end on clamping part 7 and with the other end on connecting arm 9. In the clamping position B (Figure 5), the clamping parts 5 and 7 press firmly against the cable 3. This position is taken in the event of a fall of the user which is connected to the coupling part 13 via a carabiner. As a result of the fall, the coupling part 13 is pulled downwards and the two clamping parts are pressed towards each other. In the release position C (Figure 6), the pawl 25 allows an upward displacement of the coupling part 13 relative to the clamping parts 5 and 7, so that the device can be removed from the cable. This release position can only be taken after the pawl 25 has been manually pulled against the spring force to the position shown in Figure 6.
    Attached to the pawl 25 is a pin 31 which ensures that the clamping parts cannot collapse to the release position if the device is placed upside down on the cable. This is illustrated with reference to Figures 7 and 9, in which the device is shown in an upside-down position in the release position and the displacement position, respectively. Figures 8 and 10 show details thereof at the location of this pin 31. The pin 31 is movable during rotation of the pawl 25 between the clamping position B and the release position C in a curved groove 33 which is present in the coupling part 13. In the middle of the side wall of the curved groove 33 there is a recess 34 in which there is a blocking element 35. If the device is present upside down on a cable, the blocking element 35 will fall into the groove 33 from the recess 34 as a result of gravity and thereby block movement of the pin 31 through the groove and thereby rotation of the pawl 25. As a result, the coupling part 13 cannot be displaced relative to the two clamping parts 5 and 7, so that also the clamping parts cannot be moved towards or away from each other.
    Although in the foregoing the invention has been elucidated with reference to the drawings, it should be noted that the invention is by no means limited to the embodiment shown in the drawings. The invention also extends to all embodiments deviating from the embodiment shown in the drawings within the scope defined by the claims.
    权利要求:
    Claims (6)
    [1]
    Device (1) for stopping a fall while climbing up or descending along a cable (3), comprising: two elongated clamping parts (5,7) which are spaced apart and which are used on either side of the cable during use be present and slide over the cable, each of these clamping parts being provided with a clamping surface, which color surfaces (6, 8) are opposite each other and facing each other, and wherein each of the clamping parts is provided with two ends (9a in the longitudinal direction) , 11a), two connecting arms (9, 11), which are present at a distance from each other, wherein each clamping part is pivotally connected to each of the connecting arms, and a coupling part (13) to which a carabiner (15) can be attached and which is pivotable is connected to one of the ends (9a, 11a) of each of the connecting arms, characterized in that: viewed in the longitudinal direction of the clamping parts, the connecting arms (9) are spaced apart, and each clamping part (5,7 ) right away of the ends (5a, 7a) is hingedly connected to one of the connecting arms (9) and with the other end (5b, 7b) to the other connecting arm (11).
    [2]
    Device according to claim 1, characterized in that the clamping parts (5,7) are parallel to each other and the clamping surfaces (6,8) are elongated and are also parallel to each other.
    [3]
    Device according to claim 1 or 2, characterized in that the pivot points (17, 19, 21, 23) of the clamping parts (5.7) with one of the connecting arms (9.11), viewed in the longitudinal direction of the the cable (3), which are present in the clamping parts, are present at a distance (20) from each other, the lower of the two pivot points (19, 23) being present between both ends (9a, 9b, 11a, 11b) of the connecting arm (9.11) and the first end (9a, 11a) of the connecting arm connected to the coupling part (13) is present on the same side of the cable (3) as this lowest pivot point (19, 23), so that when the coupling part (13) is moved downwards with respect to clamping parts (5,7), the clamping surfaces (6,8) move towards each other, and with upward displacement of the coupling part (13) with respect to clamping parts (5,7), the clamping surfaces (6,8) away from each other move.
    [4]
    Device according to claim 1, 2 or 3, characterized in that the device furthermore comprises a pawl (25) which is rotatably present on the coupling part (13) about an axis of rotation (27) and between said first ends (9a, 11a) of the connecting arms (9, 11) is rotatably connected to the coupling part (13), which pawl (25) is provided with a free end (25a) which is movable between: a moving position (A), in which the clamping parts ( 5,7) press lightly against the cable (3) and the device (1) cannot be taken from the cable (3), and in which the pawl (25) an upward movement of the coupling part (13) relative to the clamping parts (5,7) in the presence of the device (1) on a cable (3), a clamping position (B), in which the clamping parts (5,7) forcefully press against the cable (3), and a release position (C ), wherein the pawl (25) allows an upward movement of the coupling part (13) relative to the clamping parts (5,7) in the presence of the device (1) on a cable (3), so that the i direction of the cable can be taken.
    [5]
    Device according to claim 4, characterized in that the device comprises a spring (29) which presses the pawl (25) to the clamping position (B).
    [6]
    Device according to claim 4 or 5, characterized in that the pawl (25) is provided with a pin (31) which, during rotation of the pawl, is movable in a curved position between the clamping position (B) and the release position (C) groove (33) present in the coupling part (13), and that the coupling part comprises a blocking element (35) which, when the device (1) is placed upside down, falls on a cable (3) in the groove (33) under the influence of gravity and prevents movement of the pin (31) through the groove and thereby blocks the pawl (25).
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3496820A1|2019-06-19|
    NL2016911B1|2017-08-21|
    EP3496820B1|2021-04-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3733245A1|2019-04-30|2020-11-04|Honeywell International Inc.|Fall protection locking system|
    法律状态:
    2021-03-03| RE| Confiscation|Free format text: SEIZURE, PRE-JUDGEMENT ATTACHEMENT Effective date: 20210216 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL2016231|2016-02-05|
    NL2016712|2016-04-30|EP17717251.7A| EP3496820B1|2016-02-05|2017-02-01|A device for stopping a fall during climbing or descending along a rope|
    PCT/NL2017/050064| WO2017135818A1|2016-02-05|2017-02-01|A device for stopping a fall during climbing or descending along a rope|
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