• 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 cam lock, and removable axis, wherein the return spring 17 is integrated in a housing 18 of the cam 14 through a cassette 19 for holding and protection, said cassette being configured to position the spring 17 in a state of prestressing. Applications: rope safety blocker
    公开号:FR3033252A1
    申请号:FR1551856
    申请日:2015-03-05
    公开日:2016-09-09
    发明作者:Julien Moine；Alain Maurice；Benoit Vuillermoz
    申请人:Zedel SAS；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION The invention relates to a rope stopper comprising: a U-shaped body provided with a chute for the passage of the rope; actuation having a fastening orifice of a safety means, and a wedging cam of the rope, said lever being housed in the chute by means of a removable shaft, and a return spring biasing the cam towards the rope. State of the art Knockers known of the kind mentioned, include a U-shaped bracket forming a chute, a cam lock lever, and a removable shaft for installing or removing the blocker at any point of the rope. The lever and the detached axle remain connected to the body of the blocker by a flexible link to make them captive after disassembly of the axis. The return of the cam towards the rope is effected by elastic return means, for example by bending a cable, or by the intervention of a torsion spring or traction. The operations of setting up and dismounting these elastic return means are easy to implement by the user with a removable axle blocker. 3033252 2 In another type of cam lock, the pivot remains firmly fixed to the cam, and it is the cam and pivot assembly that is removable from the chute after unlocking a lock system that releases the extremities opposite of the axis. Torsion springs are mounted coaxially on the ends 5 of the pivot on either side of the cam to provide the return. The winding of these springs is not easy during the installation of the cam and pivot assembly in the chute. OBJECT OF THE INVENTION The object of the invention is to provide a cam locker equipped with a return spring easily removable and reassembly by the user without risk of error or damage.
    [0002] The cam locker according to the invention is characterized in that the spring is integrated in a housing of the lever of the cam by means of a holding cassette configured to place the spring in a prestressed state. According to a preferred embodiment, the cassette comprises a receiving end of the spring, and resilient fingers coaxially surrounding the end piece for clipping into the housing. The spring is formed by a torsion spring of the spiral type, mounted around the tip of the cassette. The cassette is configured to cooperate with a stop lever to ensure its maintenance in a body groove. When inserting the lever into the chute, the cassette fits into the groove of the body with only one possible mounting position.
    [0003] 3033252 3 The pivot axis of the cam lever is removable by any means of fast mechanical fastening. BRIEF DESCRIPTION OF THE DRAWINGS Other advantages and features will become more clearly apparent from the following description of an embodiment of the invention given by way of nonlimiting example and represented in the accompanying drawings, in which: Figure 1 is an exploded perspective view of the blocker according to the invention; - Figure 2 is an exploded perspective view of the cam lever subassembly and holding cassette of the return spring; FIG. 3 shows a view of the subassembly of FIG. 2 with the cassette ready to be inserted in the housing of the lever; - Figure 4 shows a view of the subset of Figure 3 after insertion into the housing; FIG. 5 represents a view of the subassembly of FIG. 4 when it is introduced into the chute of the body; FIG. 6 is a front view of the chute of the body, before insertion of the pivot axis of the lever. ; - Figure 7 illustrates a cross-sectional view along the axis of the blocker; - Figures 8 and 9 are views in vertical section of the blocker, with holding the cassette, respectively open and locked position of the cam.
    [0004] DESCRIPTION OF A PARTICULAR EMBODIMENT With reference to FIGS. 1 to 7, a blocker 10 is intended for the secure progression of a climber on a fixed rope, and for the realization of hauling or hoisting systems.
    [0005] The blocker 10 comprises a U-shaped metal body 11 with a central chute 12 for the passage of the rope, and an actuating lever 13 with a cam 14 for locking. The actuating lever 13 can swing about a transverse axis between a first jamming position and a second unlocking position of the string. The cam 14 extends to the inner end of the actuating lever 13 facing the bottom of the chute 12, so as to lock the rope against the bottom of the chute 12 in the first position. At the opposite end of the cam 14, the actuating lever 13 is provided with a circular orifice 20 accessible from the outside of the chute 12, for the attachment of a security means (not shown) for to be connected to the climber's harness. The security means may be a carabiner, a rope or a strap. The surface of the cam 14 contacting the rope may include a plurality of ribs or spikes to enhance the locking effect. After insertion of the rope in the chute 12, the blocker 10 allows free movement of the climber upwards, and ensures a locking effect downwards. A return spring 17 formed by way of example by a torsion spring is arranged coaxially around the axis 15 to urge the actuating lever 13 and the cam 14 by light pressure on the rope. The two parallel branches of the U-shaped body 11 comprise holes 21 aligned transversely for the passage of the axis 15 of the blocker. The shaft 15 is retained by dismountable fixing means, for example screws and nuts, pins, telescopic balls, etc. According to the invention, the spring 17 is integrated in a circular housing 10 formed in the actuating lever 13, being held in place by means of a retaining cassette 19. The housing 18 is located between the end cam 14 and the attachment hole 16, and has a diameter slightly greater than that of the torsion spring 17. The bottom of the housing 18 is equipped with an annular flange 20 on which the spring 17 bears. Any other type of spring can of course be used by adapting the configuration of the housing 18. The cassette 19 is preferably made of molded plastic, and has a through hole 22 allowing the passage of the axis 15. On one side the cassette 19 has a flat surface, and the opposite side extends a fitting 23 of the spring 17. Elastic fingers 24 coaxially surround the endpiece 23 to clone the cassette 19 in the housing 18. stops are provided on both sides of the cassette 19 to ensure its rotational locking once inserted into the housing 18 with the spring 17.
    [0006] The axis 15 has a length corresponding to the spacing of the branches of the body 11 so as not to exceed after introduction. It is provided at its opposite ends with two grooves 25, 26 annular in which engage two pins 27, 28 fast fixing.
    [0007] 3033252 6 The spring 17 is mounted in the blocker 10 as follows: The torsion spring 17 is first positioned around the tubular endpiece 5 of the cassette 19, the cassette 19 is then rotated. a fraction of a turn to put the spring 17 in a state of prestressing, and is nested by clipping the cassette with the spring 17 in the housing 18 of the lever 13. In this state, the cassette 19 protects the spring 17, and the assembly is locked in rotation on the lever 13 of the cam 14.
    [0008] The lever 13 of the cam 14 equipped with the cassette 19 holding the spring 17 is a subassembly intended to be inserted into the chute 12 of the body 11 by making the hole 22 of the cassette 19 coincide with the aligned holes 21 11. The cassette 19 fits into a groove 30 (FIGS. 1 and 7) of one of the branches of the body 11 with only one possible mounting position. In the inserted position in the groove 30, the cassette 19 is immobilized in rotation. The axis 15 can then be introduced through the holes 21, and locked transversely in the stirrup 11 by the introduction of the two pins 27, 28 fast fixing. In FIGS. 8 and 9, an abutment 29 of the lever 13 cooperates with a rounded edge of the cassette 19 to ensure its retention in the housing 18 during the entire pivoting stroke of the cam lever 13 between the open position (FIG. 8 ) and the locked position (Figure 9).
    [0009] After assembly of the axis 15, the blocker 10 is operational and the spring 17 in pre-control state, biases the cam 14 towards the rope by pivoting about the axis 15.
    [0010] The disassembly of the shaft 15 is performed during the introduction or removal of the blocker 10 of the rope, the lever 13 of the cam 14 can be connected to the body 11 by means of a captive connection, for example a cable or any other flexible link. 10
    权利要求:
    Claims (8)
    [0001]
    REVENDICATIONS1. A rope blocker comprising: - a U-shaped body (11) having a chord chute (12), - an actuating lever (13) having a fastening port (16) of a safety means, and a cam (14) for wedging the rope, said lever being housed in the chute by means of a removable shaft (15), and a return spring (17) urging the cam (14) towards the rope, characterized in that the spring (17) is integrated in a housing (18) of the lever (13) of the cam (14) by means of a holding cassette (19) configured to place the spring (17) in a prestress condition.
    [0002]
    2. Blocker according to claim 1, characterized in that the cassette (19) has an orifice (22) for the passage of the axis (15), and clipping means adapted to fit in the housing (18). lever (13).
    [0003]
    3. Blocker according to claim 1 or 2, characterized in that the cassette (19) comprises a nozzle (23) for receiving the spring (17), and fingers (24) elastically coaxially surrounding the tip (23) for the clipping into the housing (18).
    [0004]
    4. Blocker according to claim 3, characterized in that the spring (17) is formed by a torsion spring of the spiral type, mounted around the tip (23) of the cassette (19). 3033252 9
    [0005]
    5. Blocker according to one of the preceding claims, characterized in that the cassette (19) is configured to cooperate with a stop (29) of the lever (13) to ensure its maintenance in a groove (30) of the body (11) . 5
    [0006]
    6. Blocker according to one of the preceding claims, characterized in that the cassette (19) is made of molded plastic material.
    [0007]
    7. Blocker according to one of the preceding claims, characterized in that the axis (15) of pivoting of the lever (13) to cam (14) is removable by mechanical means fast fixing.
    [0008]
    8. Blocker according to claim 5, characterized in that during the insertion of the lever (13) into the chute (12), the cassette (19) fits into the groove (30) of the body (11) by presenting only one possible mounting position. 15
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    同族专利:
    公开号 | 公开日
    US20160258457A1|2016-09-08|
    FR3033252B1|2018-02-23|
    US9482251B2|2016-11-01|
    CN106110535A|2016-11-16|
    CN106110535B|2021-03-09|
    EP3064253B1|2018-07-04|
    EP3064253A1|2016-09-07|
    ES2685906T3|2018-10-15|
    TWI695131B|2020-06-01|
    TW201641837A|2016-12-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3852943A|1973-08-27|1974-12-10|Meyer Ind Inc|Portable safety clamp|
    US5146655A|1991-10-29|1992-09-15|Gibbs Peter E|Safety clamp appliance|
    EP2191870A1|2008-11-27|2010-06-02|Zedel|Blocking device with cam for belaying a fixed rope|
    WO2012164279A2|2011-05-31|2012-12-06|Central Limited|A safety clamp|
    US7076844B2|2004-05-03|2006-07-18|Skyba Helmut K|Open sided cam lock for ropes|
    CN201783107U|2010-03-09|2011-04-06|国网电力科学研究院武汉南瑞有限责任公司|High-altitude work falling prevention device with mechanical recognition function|CN106163618A|2013-11-25|2016-11-23|凯比特安全设备集团（澳大利亚）有限公司|Rope gripping apparatus|
    US10099087B2|2015-04-24|2018-10-16|Buckingham Manufacturing Company, Inc.|Cam assembly for use with pole climbing fall restriction device|
    TWM521595U|2015-11-16|2016-05-11|yi-shun Shi|Device for immediately locking and releasing a rope without pressing a switch|
    US10704623B2|2017-02-14|2020-07-07|Cory Robert Mahana|Rope arrest-and-release device for use on utility poles|
    US10864387B2|2017-04-19|2020-12-15|Auburn University|Tactical rope insertion assist device|
    US10851872B2|2018-05-03|2020-12-01|Daniel Ballarin|Rope end safety device|
    US10859134B2|2018-06-07|2020-12-08|David Oldiges|Rope gripper|
    CN109623853B|2018-10-30|2020-11-27|苏州佳世达电通有限公司|Clamping device|
    法律状态:
    2016-02-08| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-09| PLSC| Publication of the preliminary search report|Effective date: 20160909 |
    2017-02-13| PLFP| Fee payment|Year of fee payment: 3 |
    2018-02-23| PLFP| Fee payment|Year of fee payment: 4 |
    2020-02-14| PLFP| Fee payment|Year of fee payment: 6 |
    2021-02-10| PLFP| Fee payment|Year of fee payment: 7 |
    2022-01-18| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1551856A|FR3033252B1|2015-03-05|2015-03-05|ROPE BLOCKER EQUIPPED WITH AN IMPROVED SPRING CAM|
    FR1551856|2015-03-05|FR1551856A| FR3033252B1|2015-03-05|2015-03-05|ROPE BLOCKER EQUIPPED WITH AN IMPROVED SPRING CAM|
    EP16157140.1A| EP3064253B1|2015-03-05|2016-02-24|Rope ascender provided with a cam having an improved spring|
    ES16157140.1T| ES2685906T3|2015-03-05|2016-02-24|Rope blocker equipped with an improved spring cam|
    CN201610403961.6A| CN106110535B|2015-03-05|2016-03-03|Clamp on a rope equipped with an improved spring-loaded cam|
    TW105106670A| TWI695131B|2015-03-05|2016-03-04|Clamp on a rope equipped with an improved spring-loaded cam|
    US15/062,305| US9482251B2|2015-03-05|2016-03-07|Clamp on a rope equipped with an improved spring-loaded cam|
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