A ratchet locking device

Abstract

The utility model discloses a sawtooth locking device, including upper support and lower support, the lower end surface of upper support is equipped with a plurality of first sawtooth along the length direction, the upper end surface of lower support is equipped with a plurality of second sawtooth along the length direction, the front end of lower support is hinged to have spanner, and the rear end of lower support is equipped with spring lock catch, and spring lock catch includes the casing, is equipped with locking piece and return spring in the casing, the rear end of locking piece is opposite with return spring, and the front end of locking piece is opposite with lower support, and the rear end of upper support is bent down and is equipped with the abutment portion, and the rear end of casing is opposite and cooperates with the abutment portion, is equipped with locking groove in locking piece, and the rear end of casing is hinged to have connecting rod, and connecting rod and locking groove are slidably connected, and locking groove includes first locking groove and second locking groove, and first locking groove and second locking groove are connected through first channel or second channel, adopt sawtooth structure design, increase contact area, and the heat conduction efficiency is high, and spanner and spring lock catch cooperate, improve the dismounting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of locking device technology, and in particular to a serrated locking device. Background Technology

[0002] Electronic devices are widely used in all aspects of social life. With the rapid development of information technology, electronic devices and their functions are becoming increasingly complex and diverse. Modular design is widely used in these electronic devices to improve their flexibility and maintainability. In modular design, electronic devices consist of several replaceable electronic plug-in modules. These plug-in modules are installed inside the chassis in a specific order to ensure the normal operation of the device.

[0003] Existing known locking devices generally achieve the locking function through a screw. Such devices typically include a locking guide screw, several locking wedges, and a locking nut. The locking wedges can slide freely along the locking guide screw, and the wedge-shaped inclined surfaces between the locking wedges form a 45° angle with the axis of the locking guide screw. By rotating the locking guide screw, the locking wedges are axially pushed outward along the wedge-shaped inclined surfaces, increasing the height of the wedge locking device. This causes the plug-in module to be pressed against the wall of the chassis channel, generating sufficient friction to firmly fix the plug-in module in the chassis, thus achieving the purpose of locking the plug-in module. However, existing locking devices primarily function to lock the module, with limited heat conduction capacity. This significantly restricts the transfer and dissipation of heat within the electronic equipment, leading to overheating and affecting its stability and lifespan. Furthermore, some models of locking devices frequently experience thread jamming between the screw and the wedges during use, making normal disassembly and maintenance impossible and causing great inconvenience to users. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a serrated locking device. It has a simple and reasonable structure and is easy to operate. Both the upper and lower supports adopt a serrated structure design, which increases the contact area and has high heat conduction efficiency. Locking and unlocking are achieved by the cooperation of a wrench and a spring lock, which improves the efficiency of disassembly and assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a sawtooth locking device, comprising an upper bracket and a lower bracket. The lower end face of the upper bracket has a plurality of first sawtooths along its length, and the upper end face of the lower bracket has a plurality of second sawtooths along its length that mate with the first sawtooths. A wrench is hinged to the front end of the lower bracket, and a spring lock is provided at the rear end of the lower bracket. The spring lock includes a housing, within which a locking element and a return spring are provided. The rear end of the locking element abuts against the return spring, and the front end of the locking element abuts against the lower bracket. The rear end of the upper bracket is bent downwards to form an abutment portion, and the rear end of the housing abuts against the abutment portion. The locking element contains... The housing has a locking groove, and a connecting rod is hinged to the rear end of the housing. The connecting rod is slidably connected to the locking groove. The locking groove includes a first locking groove and a second locking groove. The first locking groove and the second locking groove are connected by a first channel or a second channel. In the initial state, the connecting rod is located in the first locking groove. By pushing the lower bracket with a wrench, the connecting rod slides through the first channel into the second locking groove and engages with the second locking groove, and the upper bracket is lifted up. When unlocking, by pushing the lower bracket with a wrench, the connecting rod slides through the second channel and into the first locking groove under the action of the return spring, and engages with the first locking groove, and the upper and lower brackets are reset.

[0007] Furthermore, the first saw tooth is provided with a first inclined surface, and the second saw tooth is provided with a second inclined surface, with the first inclined surface and the second inclined surface abutting against each other.

[0008] Furthermore, both the upper and lower supports are made of aluminum alloy.

[0009] Furthermore, both the first and second channels are arranged in a "V" shape.

[0010] Furthermore, both the first locking groove and the second locking groove are configured as "V" shaped grooves.

[0011] Furthermore, the front end of the locking member extends out of the housing and is provided with a connecting post, which abuts against the rear end of the lower bracket.

[0012] Furthermore, the bottom of the lower bracket is provided with an oblong hole, which is arranged along the length of the lower bracket, and a connecting screw is connected inside the oblong hole. The upper bracket is provided with a connecting hole that mates with the connecting screw.

[0013] Furthermore, the wrench is provided with a cam portion, which is hinged to the front end of the lower bracket.

[0014] Furthermore, a gasket is provided at the front end of the lower bracket, and the cam portion abuts against the gasket.

[0015] Furthermore, the front end of the return spring abuts against the locking member, and the rear end of the return spring abuts against the housing.

[0016] The beneficial effects of this utility model are as follows: The sawtooth locking device of this utility model includes an upper bracket and a lower bracket. The lower end face of the upper bracket is provided with a plurality of first sawtooths along the length direction, and the upper end face of the lower bracket is provided with a plurality of second sawtooths that cooperate with the first sawtooths along the length direction. The first sawtooths are provided with a first inclined surface, and the second sawtooths are provided with a second inclined surface. The first inclined surface and the second inclined surface abut against each other. The sawtooth structure design increases the contact area and has high heat conduction efficiency. It is also provided with a wrench and a spring lock to lock and unlock, which improves the efficiency of disassembly and assembly.

[0017] The locking device is installed in the slot of the chassis. After the module is inserted, the lower bracket is pushed inward with a wrench. Under the action of the first and second inclined surfaces, the upper bracket is lifted, compensating for the gap between the module and the slot, thus locking the module. Simultaneously, the lower bracket pushes the locking element, causing the connecting rod to slide through the first channel into the second locking groove and engage with it, locking the position of the upper bracket. To unlock, the lower bracket is pushed inward again with the wrench. The lower bracket pushes the locking element, causing the connecting rod to pass through the second channel. At this time, the wrench is released, and it resets under the force of the torsion spring. The locking element resets under the action of the return spring, causing the connecting rod to slide back into the first locking groove. The connecting rod engages with the first locking groove, and simultaneously, the upper and lower brackets reset, creating a gap between the slot and the module, thus unlocking the module. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 This is a cross-sectional structural diagram of the connecting rod as it passes through the first channel;

[0021] Figure 4 This is a cross-sectional structural diagram of the connecting rod when it is located in the second locking groove;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure when the connecting rod passes through the second channel.

[0023] Figures 1-5 In the middle: 1. Upper bracket; 11. First sawtooth; 12. Abutment part; 13. Connecting hole; 2. Lower bracket; 21. Second sawtooth; 22. Wrench; 221. Cam part; 222. Washer; 23. Waist-shaped hole; 231. Connecting screw; 3. Housing; 31. Return spring; 32. Connecting post; 33. Locking part; 331. First locking groove; 332. Second locking groove; 333. First channel; 334. Second channel; 34. Connecting rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figures 1-5 The diagram shows a serrated locking device, comprising an upper bracket 1 and a lower bracket 2. The upper bracket 1 is positioned above the lower bracket 2. The lower end face of the upper bracket 1 has a plurality of first serrations 11 along its length. The upper end face of the lower bracket 2 has a plurality of second serrations 21 along its length that mate with the first serrations 11. This serrated structure design increases the contact area and improves heat conduction efficiency. The first serrations 11 have a first inclined surface, and the second serrations 21 have a second inclined surface, which abut against each other. A wrench 22 is hinged to the front end of the lower bracket 2, and a torsion spring (not shown in the diagram) is installed inside the wrench 22. The torsion spring serves a reset function. A spring lock is located at the rear end of the lower bracket 2. The spring lock includes a housing 3, within which a locking element 33 and a reset spring are provided. 31. The rear end of the locking member 33 abuts against the return spring 31. Specifically, the front end of the return spring 31 abuts against the locking member 33, and the rear end of the return spring 31 abuts against the housing 3. The return spring 31 has elasticity and can effectively perform the reset function. The front end of the locking member 33 abuts against the lower bracket 2. The rear end of the upper bracket 1 is bent downward to provide an abutment part 12. The rear end of the housing 3 abuts against the abutment part 12. The locking member 33 is provided with a locking groove. The rear end of the housing 3 is hinged to a connecting rod 34. The connecting rod 34 is slidably connected to the locking groove. The locking groove includes a first locking groove 331 and a second locking groove 332. The first locking groove 331 and the second locking groove 332 are connected through a first channel 333 or a second channel 334. In the initial state, the connecting rod 34 is located in the first locking groove 331. Figures 1-2 As shown, by pushing the lower bracket 2 inward with the wrench 22, the lower bracket 2 pushes the locking member 33, causing the connecting rod 34 to slide through the first channel 333 into the second locking groove 332 and engage with the second locking groove 332 for limiting cooperation, as shown. Figures 3-4 As shown, simultaneously, the upper bracket 1 is lifted, serving a locking function; during unlocking, the lower bracket 2 is pushed inward by the wrench 22, and the lower bracket 2 pushes the locking member 33, causing the connecting rod 34 to pass through the second channel 334, as shown. Figure 5 As shown, at this time, when the wrench 22 is released, the wrench 22 returns to its original position under the elastic force of the torsion spring, and the locking member 33 returns to its original position under the action of the return spring 31, causing the connecting rod 34 to slide back into the first locking groove 331, as shown. Figures 1-2 As shown, the connecting rod 34 engages with the first locking groove 331 to limit the movement, and simultaneously, the upper bracket 1 and the lower bracket 2 reset, thus unlocking the device.

[0026] Preferably, in this embodiment, both the upper support 1 and the lower support 2 are made of aluminum alloy. Aluminum alloy is lightweight and has high corrosion resistance, which can extend the service life of the upper support 1 and the lower support 2.

[0027] Preferably, in this embodiment, as Figures 2-5 As shown, the first channel 333 and the second channel 334 are both arranged in a "V" shape, and the connecting rod 34 cooperates with the first locking groove 331 or the second locking groove 332 under the guidance of the first channel 333 and the second channel 334.

[0028] Preferably, in this embodiment, both the first locking groove 331 and the second locking groove 332 are set as V-shaped grooves, which can provide a larger contact area, thereby enhancing the locking effect. This makes it difficult for the connecting rod 34 to disengage after it is engaged with the first locking groove 331 or the second locking groove 332, ensuring a stable and reliable connection.

[0029] Preferably, in this embodiment, the front end of the locking member 33 extends out of the housing 3 and is provided with a connecting post 32. The connecting post 32 abuts against the rear end of the lower bracket 2 to ensure that the two can abut tightly.

[0030] Preferably, in this embodiment, refer to Figures 3-5 The bottom of the lower support 2 is provided with an oblong hole 23, which is set along the length of the lower support 2. A connecting screw 231 is connected inside the oblong hole 23. The upper support 1 is provided with a connecting hole 13 that cooperates with the connecting screw 231. Specifically, the connecting screw 231 passes through the oblong hole 23 and the connecting hole 13 from bottom to top. The oblong hole 23 allows the lower support 2 to move within a certain range, avoiding excessive movement of the lower support 2 and affecting its use.

[0031] Preferably, in this embodiment, refer to Figure 1 The wrench 22 is provided with a cam part 221, which is hinged to the front end of the lower bracket 2. When the wrench 22 rotates, the cam part 221 can better transmit force and movement.

[0032] Preferably, in this embodiment, refer to Figure 1 The lower support 2 is also provided with a gasket 222 at its front end. The cam part 221 abuts against the gasket 222. The gasket 222 can reduce the direct wear between the cam part 221 and the lower support 2 and improve the service life.

[0033] The working principle of this utility model is as follows: The locking device is installed in the slot of the chassis. After the module is inserted, the lower bracket 2 is pushed inward by the wrench 22. Under the action of the first and second inclined surfaces, the upper bracket 1 is lifted, compensating for the gap between the module and the slot, thus achieving a locking effect. Simultaneously, the lower bracket 2 pushes the locking member 33, causing the connecting rod 34 to slide through the first channel 333 into the second locking groove 332 and engage with it. Figures 3-4 As shown, the upper bracket 1 is locked in place; to unlock, the lower bracket 2 is pushed inward by the wrench 22, and the lower bracket 2 pushes the locking member 33 to make the connecting rod 34 pass through the second channel 334. At this time, the wrench 22 is released, and the wrench 22 returns to its original position under the elastic force of the torsion spring. The locking member 33 returns to its original position under the action of the return spring 31, so that the connecting rod 34 slides into the first locking groove 331 again. The connecting rod 34 is limited and engaged with the first locking groove 331, as shown. Figures 1-2 As shown, the upper bracket 1 and the lower bracket 2 are reset synchronously, and a gap is formed between the slot and the module, which serves to unlock the module.

[0034] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A serrated locking device, characterized in that: The system includes an upper bracket (1) and a lower bracket (2). The lower end face of the upper bracket (1) is provided with a plurality of first serrations (11) along the length direction. The upper end face of the lower bracket (2) is provided with a plurality of second serrations (21) that cooperate with the first serrations (11) along the length direction. A wrench (22) is hinged to the front end of the lower bracket (2). A spring lock is provided at the rear end of the lower bracket (2). The spring lock includes a housing (3). A locking member (33) and a return spring (31) are provided inside the housing (3). The rear end of the locking member (33) abuts against the return spring (31), and the front end of the locking member (33) abuts against the lower bracket (2). The rear end of the upper bracket (1) is bent downward to provide an abutment part (12). The rear end of the housing (3) abuts against the abutment part (12). A locking groove is provided inside the locking member (33). A connecting rod (34) is hinged to the rear end of the housing (3). (34) Sliding connection with locking groove, the locking groove includes a first locking groove (331) and a second locking groove (332). The first locking groove (331) and the second locking groove (332) are connected by a first channel (333) or a second channel (334). In the initial state, the connecting rod (34) is located in the first locking groove (331). The lower bracket (2) is pushed by the wrench (22) so that the connecting rod (34) slides through the first channel (333) into the second locking groove (332) and is limited to the second locking groove (332), and the upper bracket (1) is lifted. When unlocking, the lower bracket (2) is pushed by the wrench (22) so that the connecting rod (34) slides through the second channel (334) and under the action of the return spring (31) into the first locking groove (331), and is limited to the first locking groove (331), and the upper bracket (1) and the lower bracket (2) are reset.

2. The serrated locking device according to claim 1, characterized in that: The first saw tooth (11) is provided with a first inclined surface, and the second saw tooth (21) is provided with a second inclined surface, and the first inclined surface and the second inclined surface abut against each other.

3. The serrated locking device according to claim 1, characterized in that: Both the upper bracket (1) and the lower bracket (2) are made of aluminum alloy.

4. The serrated locking device according to claim 1, characterized in that: The first channel (333) and the second channel (334) are both arranged in a "V" shape.

5. A serrated locking device according to claim 1, characterized in that: The first locking groove (331) and the second locking groove (332) are both set as "V" shaped grooves.

6. The serrated locking device according to claim 1, characterized in that: The front end of the locking member (33) extends out of the housing (3) and is provided with a connecting post (32), which abuts against the rear end of the lower bracket (2).

7. A serrated locking device according to claim 1, characterized in that: The bottom of the lower bracket (2) is provided with a waist-shaped hole (23), which is provided along the length of the lower bracket (2). A connecting screw (231) is connected inside the waist-shaped hole (23), and the upper bracket (1) is provided with a connecting hole (13) that cooperates with the connecting screw (231).

8. A serrated locking device according to claim 1, characterized in that: The wrench (22) is provided with a cam part (221), which is hinged to the front end of the lower bracket (2).

9. A serrated locking device according to claim 8, characterized in that: The front end of the lower bracket (2) is also provided with a gasket (222), and the cam part (221) abuts against the gasket (222).

10. A serrated locking device according to claim 1, characterized in that: The front end of the return spring (31) abuts against the locking member (33), and the rear end of the return spring (31) abuts against the housing (3).

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