Clamping resettable locking strip

Abstract

The utility model discloses a clamping resettable locking strip which mainly comprises a shaft, a front sliding seat, a first sliding block group, a middle sliding seat, a second sliding block group, an elastic belt, a rear sliding seat and a locking and loosening structure. The front sliding base, the middle sliding base and the rear sliding base are arranged on the shaft in a sleeving mode and can slide relatively, and each sliding base is provided with a sliding channel matched with the corresponding sliding block. The two ends of the adjacent sliding blocks in the first sliding block set and the second sliding block set are provided with inclined faces and grooves for containing the elastic bands. When the locking and loosening structure works, the sliding seat is pushed to move, so that the first upper sliding block and the second upper sliding block rise to abut against a fixed object to realize clamping; and when clamping is released, the elastic band enables the sliding block to reset. The locking strip has the advantages of automatic resetting, simplicity and convenience in operation, compact structure, good anti-loosening performance, high universality and the like, is suitable for fixing case parts in the fields of aviation, military industry and the like, and effectively solves the problems of inconvenience in operation, incapability of automatic resetting and the like of a traditional locking strip.

Description

Technical Field

[0001] This utility model relates to the field of mechanical fastening technology, and in particular to a clamping and resettable locking strip. Background Technology

[0002] In the field of aerospace or military chassis, reliable securing of components is crucial for the safety and performance of equipment, and locking strips are commonly used fastening components. Wedge-shaped locking strips, as a common type, have significant drawbacks in practical applications.

[0003] Traditional wedge-shaped locking bars rely on a threaded structure for their actuation mechanism, making operation cumbersome. In the confined spaces of aviation or military equipment, operators often struggle to maneuver tools, and manually rotating components is not only inconvenient but also extremely inefficient. For example, during aircraft chassis maintenance, where personnel must operate within a tight space, the increased difficulty of using traditional locking bars prolongs maintenance time.

[0004] Meanwhile, the existing locking strip cannot automatically reset after being released. Manual adjustment is required after each use, which undoubtedly adds extra steps and time costs in work scenarios involving frequent installation and disassembly of parts, reducing overall work efficiency.

[0005] These problems seriously affect the maintenance efficiency and reliability of aviation or military equipment, and urgently need to be solved through innovative locking bar design. Utility Model Content

[0006] This invention aims to overcome the shortcomings of existing technologies and solve the problems of inconvenient operation, low efficiency, and inability to automatically reset traditional locking bars in the field of aerospace or military equipment enclosures. It provides a clamping and resettable locking bar. Through innovative structural design, the operation process is simplified, enabling easy and rapid locking and unlocking even in confined spaces; clamping performance is enhanced, ensuring stable fixation of parts under various working conditions; and the automatic reset mechanism reduces manual adjustment steps, thereby improving overall work efficiency and ensuring stable operation and efficient maintenance of aerospace or military equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a clamping and resetting locking bar, comprising a shaft, a front slide, a first slider group, a middle slide, a second slider group, an elastic band, a rear slide, and a locking and releasing structure; the first slider group comprises a first upper slider and a first lower slider, and the second slider group comprises a second upper slider and a second lower slider;

[0008] The front slide, middle slide, and rear slide are all sleeved on the shaft through their respective through holes and can slide relative to each other along the shaft;

[0009] The front slide seat is provided with an inclined sliding channel matched with the first upper slide block and the first lower slide block; the middle slide seat is provided with sliding channels matched with the first upper slide block, the first lower slide block, the second upper slide block and the second lower slide block respectively, and the sliding channels are provided with protruding edges for limiting the slide blocks; and the rear slide seat is provided with a sliding channel matched with the second upper slide block and the second lower slide block.

[0010] The first upper slide block and the first lower slide block are adjacently arranged, both ends of the first upper slide block and the first lower slide block are provided with inclined surfaces, and the first upper slide block and the first lower slide block are provided with grooves for placing the elastic belt.

[0011] When the locking and loosening structure is in the process of locking, the rear slide seat, the middle slide seat and the front slide seat can be pushed to move along the shaft, so that the first upper slide block and the second upper slide block are lifted to be higher than the upper end surface of the middle slide seat in the corresponding sliding channels, and the lifted first upper slide block and the second upper slide block are used for pressing the fixed object to realize clamping; when the locking and loosening structure is released, the first upper slide block and the second upper slide block can be reset under the action of the elastic belt.

[0012] The locking and loosening structure comprises a first rotating member, a second rotating member and an intermediate member; the first rotating member drives the second rotating member to rotate through the force transmission through hole opened in the side edge, the second rotating member is threadedly matched with the shaft, and when the second rotating member rotates, the second rotating member can move forward or backward along the shaft; the first rotating member and the intermediate member are connected in a sawtooth shape, and the intermediate member is pushed by the second rotating member when the second rotating member moves forward along the shaft, and the intermediate member pushes the rear slide seat to transmit the pushing force.

[0013] The locking and loosening structure further comprises a spring and a first limiting member; one end of the spring is pressed against the protruding edge of the second rotating member, the other end of the spring is pressed against the side wall of the first rotating member, and the spring is compressed to generate elastic force when the second rotating member

[0014] During forward movement along the shaft, the spring is compressed to generate elastic force; the elastic force of the spring acts on the first rotating member, the first rotating member and the intermediate member are connected in a sawtooth shape, and the force is transmitted to the intermediate member, the intermediate member pushes the rear slide seat to transmit the pushing force; the first limiting member is installed on the second rotating member, and the first limiting member is used for blocking the protruding edge on the first rotating member.

[0015] The two ends of the elastic belt are respectively fixed in the grooves of the first upper slide block and the first lower slide block, and the elastic belt is used for folding the first upper slide block and the first lower slide block close to each other when the locking and loosening structure is released.

[0016] The two ends of the elastic belt are respectively fixed in the grooves of the second upper slide block and the second lower slide block, and the elastic belt is used for folding the second upper slide block and the second lower slide block close to each other to realize reset when the locking and loosening structure is released.

[0017] The first rotating member is provided with a side wall, one side of the side wall serving as a convex edge of the first rotating member, the other end of the spring being pressed against the side wall, a force transmission through hole being formed in the side wall, and the inner wall of the force transmission through hole having at least an arc surface and a flat surface; the body of the second rotating member has at least an arc surface and a flat surface; the body of the second rotating member is arranged in the force transmission through hole, and when the first rotating member rotates, the second rotating member is driven to rotate through the force transmission through hole.

[0018] The locking nut is arranged at one end of the shaft.

[0019] The above technical scheme has at least the following beneficial effects:

[0020] 1. The locking strip innovatively utilizes the cooperation of the elastic band and the sliding block, and when the clamping is released, the elastic band can quickly reset the first upper sliding block and the second upper sliding block, avoiding manual adjustment, greatly improving the operation efficiency. In the working scene of frequent installation and disassembly of parts, the operator can quickly perform the next operation, significantly shortening the working time and reducing the labor intensity.

[0021] 2. The overall structure design is compact, and the layout of each component is scientific and reasonable. The cooperation of the sliding seat and the shaft and the sliding channel setting of the sliding block and the sliding seat make the locking strip occupy a small space. At the same time, the design of the locking and loosening structure makes the operation not need too much external space, especially suitable for space-limited environments such as aviation and military cases, and facilitates the operator to complete the fixing and disassembly of parts in a small area.

[0022] 3. The spring and the first limiting piece in the locking and loosening structure cooperate with each other to play an excellent anti-loose effect.

[0023] The elastic force generated by the compression of the spring not only enhances the thrust on the rear sliding seat, but also pre-tightens the entire locking structure; the first limiting piece effectively blocks the accidental rotation of the first rotating member, ensures that the locking strip still maintains a stable locking state when the equipment vibrates or is impacted by external force, and improves the safety and reliability of the equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a locking state schematic view of the clamping resettable locking strip of the utility model;

[0025] Figure 2 is a loosening state schematic view of the clamping resettable locking strip of the utility model;

[0026] Figure 3 is a cross-sectional schematic view of the clamping resettable locking strip of the utility model;

[0027] Figure 4 is Figure 3 a partial enlarged schematic view;

[0028] Figure 5 is the front slide seat schematic view of the utility model;

[0029] Figure 6 is the first sliding block group schematic view of the utility model;

[0030] Figure 7 is the intermediate slide seat schematic view of the utility model;

[0031] Figure 8 is the first rotating part structure schematic view one of the utility model;

[0032] Figure 9 is the first rotating part structure schematic view two of the utility model;

[0033] Figure 10 is the second rotating part structure schematic view of the utility model;

[0034] Figure 11 is the locking and loosening structure schematic view of the utility model.

[0035] In the figure: 1, shaft;2, front slide seat;3, first sliding block group;31, first upper sliding block;32, first lower sliding block;4, intermediate slide seat;5, second sliding block group;51, second upper sliding block;52, second lower sliding block;6, elastic band;7, rear slide seat;8, through hole;9, sliding channel;10, protrusion;11, first rotating part;12, second rotating part;13, intermediate part;14, force transmission through hole;15, spring;16, first limiting part;17, side wall;18, arc surface;19, plane;20, locking nut;21, second limiting part;22, protruding edge. 23, positioning hole;24, positioning pin. DETAILED DESCRIPTION

[0036] The utility model will be further explained in detail below in combination with the drawings and specific embodiments. The utility model

[0037] The embodiments of the utility model are given for example and description, and are not exhaustive or limit the utility model to the disclosed forms. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical application of the utility model, and enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0038] Please refer to Figures 1-11The utility model provides a kind of clamping resettable locking strip, including shaft 1, front slide 2, first slider group 3, middle slide 4, second slider group 5, elastic band 6, rear slide 7 and locking relaxation structure;The first slider group 3 includes first upper slider 31 and first lower slider 32, and the second slider group 5 includes second upper slider 51 and second lower slider 52;

[0039] The front slide 2, middle slide 4 and rear slide 7 are all sleeved on the shaft 1 through respective through holes 8 and can slide relatively along the shaft 1;

[0040] The front slide 2 is provided with a slanted sliding channel 9 matched with the first upper slider 31 and the first lower slider 32;The middle slide 4 is provided with a sliding channel 9 matched with the first upper slider 31, the first lower slider 32, the second upper slider 51 and the second lower slider 52 respectively, and the sliding channel 9 is provided with a protrusion 10 to limit the sliders;The rear slide 7 is provided with a sliding channel 9 matched with the second upper slider 51 and the second lower slider 52;

[0041] The first upper slider 31 and the first lower slider 32 are adjacently arranged, and both ends of the two have inclined surfaces, and the first upper slider 31 and the first lower slider 32 are provided with grooves for placing the elastic band 6;The second upper slider 51 and the second lower slider 52 are adjacently arranged, and both ends of the two have inclined surfaces;

[0042] When the locking relaxation structure moves the rear slide 7, the middle slide 4 and the front slide 2 along the shaft 1 during locking, the first upper slider 31 and the second upper slider 51 are lifted above the upper end surface of the middle slide 4 in the corresponding sliding channel 9, and the lifted first upper slider 31 and second upper slider 51 are used to press the fixed object to achieve clamping;When the locking relaxation structure releases the clamping, the first upper slider 31 and the second upper slider 51 can be reset under the action of the elastic band 6.

[0043] As an embodiment, the locking relaxation structure in the embodiment includes a first rotating member 11, a second rotating member 12 and an intermediate member 13;The first rotating member 11 is provided with a transmission hole 14 on the side edge

[0044] The second rotating member 12 is threadedly matched with the shaft 1, and when the second rotating member 12 rotates, it can move forward or backward along the shaft 1;The first rotating member 11 is connected with the intermediate member 13 in a sawtooth shape, and the intermediate member 13 is pushed by the second rotating member 12 when it moves forward along the shaft 1, and the rear slide 7 is pushed by the intermediate member 13 to transmit the pushing force.

[0045] As an implementation form, the locking and loosening structure in the embodiment comprises a spring 15 and a first limiting piece 16; one end of the spring 15 is pressed against the protruding edge of the second rotating piece 12, the other end of the spring 15 is pressed against the protruding edge of the first rotating piece 11, and the spring 15 is compressed to generate elastic force during the forward movement of the second rotating piece 12 along the shaft 1; the elastic force of the spring 15 acts on the first rotating piece 11, the first rotating piece 11 is connected to the intermediate piece 13 in a sawtooth shape, and force is further transmitted to the intermediate piece 13, the intermediate piece 13 pushes the rear sliding seat 7 to transmit the pushing force; the first limiting piece 16 is installed on the second rotating piece 12, and the first limiting piece 16 is used to block the protruding edge of the first rotating piece 11.

[0046] As an implementation form, the two ends of the elastic band 6 are respectively fixed in the grooves of the first upper sliding block 31 and the first lower sliding block 32, and the elastic band 6 is used to fold and close the first upper sliding block 31 and the first lower sliding block 32 relative to each other when the locking and loosening structure is released from clamping.

[0047] As an implementation form, the two ends of the elastic band 6 are respectively fixed in the grooves of the second upper sliding block 51 and the second lower sliding block 52, and the elastic band 6 is used to fold and close the second upper sliding block 51 and the second lower sliding block 52 relative to each other to achieve resetting when the locking and loosening structure is released from clamping.

[0048] As an implementation form, the first rotating piece 11 is provided with a side wall 17, one side of the side wall 17 is used as a protruding edge of the first rotating piece 11, the other end of the spring 15 is pressed against the side wall 17, a force transmission through hole 14 is formed in the side wall 17, and the inner wall of the force transmission through hole 14 is provided with at least an arc surface 18 and a flat surface 19; the body of the second rotating piece 12 is provided with at least the arc surface 18 and the flat surface 19; the body of the second rotating piece 12 is arranged in the force transmission through hole 14, and when the first rotating piece 11 rotates, the second rotating piece 12 is driven to rotate through the force transmission through hole 14.

[0049] As an implementation form, the locking nut 20 is further included in the embodiment, and the locking nut 20 is installed at one end of the shaft 1.

[0050] The working process and advantages of the clamping and resettable locking strip are described in detail through specific embodiments. It is assumed that an electronic circuit board is installed in the case of an aviation device, and the clamping and resettable locking strip is used for fixing.

[0051] Initial state: the front slide 2, the middle slide 4 and the rear slide 7 are sleeved on the shaft 1, in the initial position. The first slider group 3 (the first upper slider 31 and the first lower slider 32) and the second slider group 5 (the second upper slider 51 and the second lower slider 52) are respectively located in the corresponding slide channel 9, and the elastic belt 6 is placed in the groove of the slider, in the natural state. The first rotating part 11 and the second rotating part 12 in the locking and releasing structure are also in the initial position, and the spring 15 is not compressed, and the first limiting part 16 is located in the corresponding position.

[0052] Locking process: the operator rotates the first rotating part 11. Since the inner wall of the force transmission through hole 14 on the side of the first rotating part 11 has an arc surface 18 and a flat surface 19, which cooperates with the corresponding arc surface 18 and flat surface 19 on the body of the second rotating part 12, the first rotating part 11 rotates through the force transmission through hole 14 to drive the second rotating part 12 to rotate. Because the second rotating part 12 is threadedly connected with the shaft 1, the rotating second rotating part 12 advances along the shaft 1. The positioning hole 23 is formed on the front slide 2, and the positioning pin 24 is arranged in the positioning hole 23. The end of the positioning pin 24 is arranged to prevent the rotation of the shaft. In another embodiment, a hole can also be formed at the corresponding position on the shaft, and the positioning pin 24 can further pass through the hole on the shaft 1, which can also prevent the rotation of the shaft.

[0053] During the advancement of the second rotating part 12, one end of the spring 15 abuts against the raised edge 22 of the second rotating part 12, and the other end abuts against the side wall 17 of the first rotating part 11 (one side of the side wall 17 arranged on the first rotating part 11). With the advancement of the second rotating part 12, the spring 15 is compressed to generate a spring force. The spring force acts on the first rotating part 11, and since the first rotating part 11 and the intermediate part 13 are connected in a sawtooth shape, the first rotating part 11 transmits the force to the intermediate part 13. The intermediate part 13 pushes the rear slide 7 to move forward along the shaft 1 after being subjected to the force. The movement of the rear slide 7 sequentially pushes the second slider group 5, the middle slide 4, the first slider group 3 and the front slide 2. During this process, the first upper slider 31 and the first lower slider 32, and the second upper slider 51 and the second lower slider 52, rise along the inclined surface in the respective slide channel 9 due to the pushing force from the slide movement. Finally, the first upper slider 31 and the second upper slider 51 rise above the upper end surface of the middle slide 4 and abut against the electronic circuit board, achieving stable clamping and fixing of the electronic circuit board. During this process, the second rotating part 12 does not directly push the intermediate part 13, but applies force to the first rotating part 11 through the spring 15, and then transmits the force to the intermediate part 13 through the first rotating part 11.

[0054] Locking process: the operator rotates the first rotating part 11. Since the inner wall of the force transmission through hole 14 on the side of the first rotating part 11 has an arc surface 18 and a flat surface 19, which cooperates with the corresponding arc surface 18 and flat surface 19 on the body of the second rotating part 12, the first rotating part 11 rotates through the force transmission through hole 14 to drive the second rotating part 12 to rotate. Because the second rotating part 12 is threadedly connected with the shaft 1, the rotating second rotating part 12 advances along the shaft 1. The positioning hole 23 is formed on the front slide 2, and the positioning pin 24 is arranged in the positioning hole 23. The end of the positioning pin 24 is arranged to prevent the rotation of the shaft. In another embodiment, a hole can also be formed at the corresponding position on the shaft, and the positioning pin 24 can further pass through the hole on the shaft 1, which can also prevent the rotation of the shaft.

[0055] The first limiting member 16 installed on the second rotating member 12 limits the convex edge of the first rotating member 11. A second limiting member 21 is arranged at the end of the shaft 1 to prevent the second rotating member 12 from falling off the shaft 1.

[0056] In the embodiment, the first limiting member and the second rotating member are fixed together by riveting, and the second limiting member and the shaft are also fixed together by riveting.

[0057] The releasing and resetting process: when the electronic circuit board needs to be disassembled, the operator reversely rotates the first rotating member 11 to drive the second rotating member 12 to retreat along the shaft 1. At the same time, the force transmission between the first rotating member 11 and the intermediate member 13 is also released, and the rear sliding seat 7 is no longer subjected to the pushing force. At this time, the elastic band 6 placed in the recesses of the first upper sliding block 31 and the first lower sliding block 32 is elastically deformed during the sliding block rising process, and generates a restoring force to make the first upper sliding block 31 and the first lower sliding block 32 close to each other, so as to descend and reset along the sliding channel 9. Similarly, the elastic band 6 in the recesses of the second upper sliding block 51 and the second lower sliding block 52 also makes them close to each other to realize resetting and return to the initial position, which is convenient for next use.

[0058] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by ordinary skilled in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially stated and limited, are implemented according to the conventional means in the art.

Claims

1. A clamping resettable locking strip, characterized by: The utility model relates to a slide fastener, including axle, front slide base, first slider group, intermediate slide base, second slider group, elastic band, rear slide base and locking and loosening structure, first slider group includes first upper slider and first lower slider, second slider group includes second upper slider and second lower slider, The front slide base, the intermediate slide base and the rear slide base are all sleeved on the axle through respective through holes and can slide along the axle; The front slide base is provided with an inclined surface sliding channel matched with the first upper slider and the first lower slider; the intermediate slide base is provided with sliding channels matched with the first upper slider, the first lower slider, the second upper slider and the second lower slider respectively, and the sliding channels are provided with raised edges to limit the sliders; the rear slide base is provided with a sliding channel matched with the second upper slider and the second lower slider; The first upper slider and the first lower slider are adjacently arranged, both ends of the first upper slider and the first lower slider are provided with inclined surfaces, and the first upper slider and the first lower slider are provided with grooves for placing the elastic band; the second upper slider and the second lower slider are adjacently arranged, both ends of the second upper slider and the second lower slider are provided with inclined surfaces; When the locking and loosening structure moves the rear slide base, the intermediate slide base and the front slide base along the axle in the locking process, the first upper slider and the second upper slider are lifted above the upper end surface of the intermediate slide base in the corresponding sliding channels, and the lifted first upper slider and second upper slider are used for pressing the fixed object to realize clamping; when the locking and loosening structure releases the clamping, the first upper slider and the second upper slider can be reset under the action of the elastic band.

2. The clamping resettable locking strip of claim 1, wherein: The locking and loosening structure includes a first rotating member, a second rotating member and an intermediate member; the first rotating member drives the second rotating member to rotate through a transmission hole formed in the side edge, the second rotating member is threadedly connected with the axle, and when the second rotating member rotates, the second rotating member can move forward or backward along the axle; the first rotating member and the intermediate member are connected in a sawtooth shape, and the intermediate member is pushed by the second rotating member when the second rotating member moves forward along the axle, and the intermediate member pushes the rear slide base to transmit the pushing force.

3. The clamping resettable locking strip of claim 2, wherein: The locking and loosening structure further includes a spring and a first limiting member; one end of the spring is pressed against the raised edge of the second rotating member, the other end of the spring is pressed against the side wall of the first rotating member, the spring is compressed to generate elastic force during the forward movement of the second rotating member along the axle; the elastic force of the spring acts on the first rotating member, the first rotating member and the intermediate member are connected in a sawtooth shape, and the force is transmitted to the intermediate member, and the intermediate member pushes the rear slide base to transmit the pushing force; The first limiting member is installed on the second rotating member, and the first limiting member is used for blocking the raised edge on the first rotating member.

4. The claspable resettable locking strip of claim 3, wherein: The two ends of the elastic band are fixed in the grooves of the first upper slider and the first lower slider respectively, and the elastic band is used for folding the first upper slider and the first lower slider close to each other when the locking and loosening structure releases the clamping; The two ends of the elastic band are fixed in the grooves of the second upper slider and the second lower slider respectively, and the elastic band is used for folding the second upper slider and the second lower slider close to each other to reset when the locking and loosening structure releases the clamping.

5. The claspable resettable locking strip of claim 3, wherein: The first rotating member is provided with a side wall, one side of the side wall is a convex edge of the first rotating member, the other end of the spring is pressed against the side wall, a force transmission through hole is arranged on the side wall, and the inner wall of the force transmission through hole is provided with at least an arc surface and a plane; the body of the second rotating member is provided with at least an arc surface and a plane; and the body of the second rotating member is arranged in the force transmission through hole, so that the second rotating member is driven to rotate by the force transmission through hole when the first rotating member rotates.

6. The claspable, resettable locking strip of any one of claims 1-5, wherein: The locking nut is arranged on one end of the shaft.

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