A latch structure

Abstract

The utility model relates to a bolt device technical field discloses a bolt structure, including the shell, the inner wall left side of shell is connected with the pin body of sliding, the top right side of pin body is equipped with a plurality of toothing, the inner wall rotationally connected with the rack of shell, the top right side of rack is equipped with the pressure groove, the inner wall rotationally connected with the rotating block of shell, the top fixedly connected with the pressure block of rotating block, the top right side of pressure block is equipped with the clamping groove, the bottom fixedly connected with the bottom column of pressure block, the inner wall bottom of shell is fixedly connected with the spring, the top right side fixedly connected with the clamping block of shell. In the utility model, the pressure block tight pressure groove fixes the rack, reduces the stress concentration between the rack and pin body, makes the engagement of both more uniform, avoids the fracture caused by local overload, restricts the pin body deviation and strengthens the structural strength of pin body through the limiting stability block simultaneously, reduces the risk of breaking.

Description

Technical Field

[0001] This utility model relates to the field of pin-type devices, and in particular to a pin structure. Background Technology

[0002] A latch is a locking device that uses opening and closing components. Its function is to fix the components relative to each other by inserting it into a corresponding lock hole or slot, preventing accidental opening and thus ensuring the safety of stored items or the sealing of the space. It is a simple yet indispensable mechanical locking accessory.

[0003] Traditional pins consist of a pin rod, a fixed base, and an operating component. The fixed base is fixed to the movable component by screws, and the pin rod can slide through the fixed base. The operating component is connected to the pin rod and is used to drive the pin rod to move along the guide direction of the fixed base. However, the connection between the operating component and the pin rod is a simple welding or riveting, which can fall off under stress after long-term use, affecting the reliability of use.

[0004] To address the issue of traditional latch operating components detaching, existing designs integrate the operating component and the latch rod into a single, integral structure, thus preventing detachment. However, in actual use, when the latch is locked, the latch rod must withstand continuous pressure from doors, windows, or cabinets. The connection point between the integrally molded operating component and the latch rod is often a stress concentration point. During frequent opening and closing operations, this area is repeatedly subjected to tensile and compressive forces. Over time, fatigue damage occurs at the stress concentration point, leading to the overall breakage of the latch. Therefore, a new latch structure is proposed to solve this problem. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a pin structure, which aims to improve the problem that fatigue damage occurs at stress concentration points in the prior art, leading to the overall breakage of the pin.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pin structure, including a housing, a pin body slidably connected to the left side of the inner wall of the housing, a plurality of toothed grooves opened on the top right side of the pin body, a rack rotatably connected to the inner wall of the housing, a pressure groove opened on the top right side of the rack, a rotating block rotatably connected to the inner wall of the housing, a pressure block fixedly connected to the top of the rotating block, a slot opened on the top right side of the pressure block, a bottom post fixedly connected to the bottom of the pressure block, a spring fixedly connected to the bottom of the inner wall of the housing, and a locking block fixedly connected to the top right side of the housing.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the card block has a first mounting hole, and the outer wall of the outer shell has a second mounting hole.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the pin is provided with a clearance hole, and the inner wall of the outer shell is fixedly connected with two rotating shafts.

[0011] As a further description of the above technical solution:

[0012] A limiting stabilizing block is fixedly connected to the top center of the pin, and the top of the limiting stabilizing block is slidably connected to the top of the inner wall of the outer shell.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the outer shell is fixedly connected to a limiting shaft, and the top of the pressure block is provided with multiple anti-slip textures.

[0015] As a further description of the above technical solution:

[0016] The bottom left side of the pressure block is slidably connected to the inner wall of the pressure groove, and the inner wall of the slot is slidably connected to the bottom of the card block.

[0017] This utility model has the following beneficial effects:

[0018] In this invention, the rack is fixed by the pressure groove on the left side of the bottom of the pressure block, which reduces the stress concentration between the rack and the pin, making the force at the meshing point more uniform and avoiding local overload that could lead to breakage. At the same time, the pin offset is limited by the limiting and stabilizing block, which strengthens the structural strength of the pin and makes the pin's movement trajectory stable, reducing the additional force caused by misalignment and lowering the risk of breakage. Attached Figure Description

[0019] Figure 1 This is a perspective view of a pin structure proposed in this utility model;

[0020] Figure 2 This is a top view of a pin structure proposed in this utility model;

[0021] Figure 3 This is a partial structural cross-sectional view of a pin structure proposed in this utility model;

[0022] Figure 4 This is a cross-sectional view of the housing of a pin structure proposed in this utility model;

[0023] Figure 5 This is a partial structural exploded view of a pin structure proposed in this utility model.

[0024] Legend:

[0025] 1. Outer shell; 2. Pin; 3. Tooth groove; 4. Rack; 5. Pressure groove; 6. Rotating block; 7. Pressure block; 8. Slot; 9. Base post; 10. Spring; 11. Slot; 12. First mounting hole; 13. Second mounting hole; 14. Clearance hole; 15. Rotating shaft; 16. Limiting and stabilizing block; 17. Limiting shaft; 18. Anti-slip texture. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] See attached document Figure 2 Appendix Figure 3 and attached Figure 5 This utility model provides an embodiment of a pin structure, including a housing 1. A pin 2 is slidably connected to the left side of the inner wall of the housing 1, allowing the pin 2 to move left and right along the housing 1 to achieve extension and retraction. Multiple toothed grooves 3 are formed on the top right side of the pin 2 for meshing with a rack 4 to transmit power. A rack 4 is rotatably connected to the inner wall of the housing 1, causing the pin 2 to move through rotation. A pressure groove 5 is formed on the top right side of the rack 4, allowing a pressure block 7 to slide on its bottom left side to restrict the position of the rack 4. A rotating block 6 is rotatably connected to the inner wall of the housing 1, providing a fulcrum for the pressure block 7. The top of the rotating block 6 is fixedly connected to the pressure block 7, and the bottom left side of the pressure block 7 is slidably connected to the inner wall of the pressure groove 5, restricting the rotation of the rack 4 through contact and controlling the locking of the rack 4. In addition to unlocking, a slot 8 is provided on the top right side of the pressure block 7, and a bottom post 9 is fixedly connected to the bottom of the pressure block 7 to transmit the elastic force of the spring 10 to the pressure block 7. A spring 10 is fixedly connected to the bottom of the inner wall of the outer shell 1 to provide a restoring force for the pressure block 7. A locking block 11 is fixedly connected to the top right side of the outer shell 1 to cooperate with the slot 8 to limit the position of the pressure block 7. The inner wall of the slot 8 is slidably connected to the bottom of the locking block 11 so that the pressure block 7 can switch between locking and unlocking when it rotates. A limit stabilizing block 16 is fixedly connected to the top center of the pin 2 to prevent the pin 2 from deviating when sliding. The top of the limit stabilizing block 16 is slidably connected to the top of the inner wall of the outer shell 1 to enhance the stability of the structure. A limit shaft 17 is fixedly connected to the inner wall of the outer shell 1 to limit the displacement of the pin 2.

[0028] Specifically, in the locked state, the toothed groove 3 on the top right side of the pin 2 engages with the bottom left end of the rack 4. The rack 4 contacts the bottom left side of the pressure block 7 through the pressure groove 5. Under the elastic force of the spring 10, the pressure block 7 rotates upward around the rotating block 6. The locking groove 8 on the top right side engages with the locking block 11 of the outer casing 1. The bottom left side of the pressure block 7 presses tightly against the pressure groove 5, fixing the rack 4 and reducing stress concentration. When unlocking, pressing the top right side of the pressure block 7 overcomes the elastic force of the spring 10 and rotates downward around the rotating block 6. The bottom post 9 moves down to compress the spring 10, pressing... When the bottom left side of block 7 disengages from the pressure groove 5, rotate rack 4 upwards, and drive pin 2 to slide back to the outer shell 1 through the tooth groove 3, thus completing the unlocking. When locking again, press block 7 to the unlocked state, rotate rack 4 downwards, and its bottom engages with tooth groove 3, pushing pin 2 to slide out of outer shell 1 to the left, driving limit stabilizing block 16 to move to engage with limit shaft 17, release block 7, spring 10 resets and pushes bottom post 9 upwards, block 7 rotates, and the bottom left side slides into pressure groove 5, and slot 8 engages with block 11, restoring the lock.

[0029] See attached document Figure 1 Appendix Figure 4 and attached Figure 5 The outer wall of the locking block 11 has a first mounting hole 12 for passing a bolt to fix the locking block 11. The outer wall of the outer shell 1 has a second mounting hole 13 for passing a bolt to fix the outer shell 1 in the installation position. The outer wall of the pin 2 has a clearance hole 14 to provide relative movement space for the bolt in the second mounting hole 13 to avoid interfering with the sliding of the pin 2. The inner wall of the outer shell 1 is fixedly connected to two rotating shafts 15, which provide rotation support points for the rotating block 6 and the rack 4 respectively. The top of the pressure block 7 has multiple anti-slip textures 18 to increase the friction between the hand and the pressure block 7 to facilitate the operation of the pressure block 7.

[0030] Specifically, during installation, the bolt passes through the first mounting hole 12 on the outer wall of the locking block 11 and the second mounting hole 13 on the outer wall of the outer shell 1 to fix the pin. The multiple anti-slip textures 18 on the top of the pressure block 7 increase the friction and facilitate operation. The two rotating shafts 15 on the inner wall of the outer shell 1 provide rotation fulcrums for the rotating block 6 and the rack 4, respectively. When the pin 2 slides, the clearance hole 14 on its outer wall provides relative movement space for the bolt in the second mounting hole 13. During the locking and unlocking process, each component moves in conjunction around the rotating shaft 15. The anti-slip textures 18 ensure operational stability, the mounting hole ensures overall fixation, and the clearance hole 14 ensures smooth sliding of the pin 2.

[0031] Working principle: In the locked state, the toothed groove 3 on the right side of the top of the pin 2 engages with the bottom left end of the rack 4. The rack 4 maintains contact with the bottom left side of the pressure block 7 through the pressure groove 5. Under the elastic force of the spring 10, the pressure block 7 is subjected to an upward rotation force around the rotating block 6. Meanwhile, the locking groove 8 on the right side of the top of the pressure block 7 is tightly engaged with the locking block 11 of the outer casing 1, forming a stable lock. At this time, the bottom left side of the pressure block 7 presses tightly against the pressure groove 5, thereby fixing the rack 4 in the current position and reducing the stress concentration between the rack 4 and the pin 2. When unlocking, pressing the top right side of the pressure block 7 overcomes the elastic force of the spring 10, causing the pressure block 7 to rotate downward around the rotating block 6. The bottom post 9 moves down with the pressure block 7, compressing the spring 10. At the same time, the bottom left side of the pressure block 7 disengages from the pressure groove 5 of the rack 4, thus unlocking. Except for limiting the rack 4, rotate the rack 4 upwards at this time. Its left bottom end drives the pin 2 to slide to the right through the tooth groove 3. The pin 2 retracts back into the housing 1, completing the unlocking action. When locking again, press the pressure block 7 to make it consistent with the unlocked state. Then rotate the rack 4 downwards. The bottom of the rack 4 engages with the tooth groove 3, pushing the pin 2 to slide to the left out of the housing 1. During this process, the pin 2 drives the limiting stabilizing block 16 to move synchronously until the left side of the limiting stabilizing block 16 connects with the limiting shaft 17. At this time, the rack 4 completely rotates back into the housing 1. Then release the pressure block 7. The spring 10 resets and pushes the bottom post 9 to move upwards, causing the pressure block 7 to rotate. The left side of the bottom of the pressure block 7 slides into the pressure groove 5. The slot 8 and the block 11 engage again, restoring the locked state.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A latch structure, comprising a housing (1), characterized in that: A pin (2) is slidably connected to the left side of the inner wall of the outer shell (1). Multiple toothed grooves (3) are provided on the top right side of the pin (2). A rack (4) is rotatably connected to the inner wall of the outer shell (1). A pressure groove (5) is provided on the top right side of the rack (4). A rotating block (6) is rotatably connected to the inner wall of the outer shell (1). A pressure block (7) is fixedly connected to the top of the rotating block (6). A slot (8) is provided on the top right side of the pressure block (7). A bottom post (9) is fixedly connected to the bottom of the pressure block (7). A spring (10) is fixedly connected to the bottom of the inner wall of the outer shell (1). A locking block (11) is fixedly connected to the top right side of the outer shell (1).

2. The pin structure according to claim 1, characterized in that: The outer wall of the card block (11) is provided with a first mounting hole (12), and the outer wall of the outer shell (1) is provided with a second mounting hole (13).

3. The pin structure according to claim 1, characterized in that: The outer wall of the pin (2) is provided with a clearance hole (14), and the inner wall of the outer shell (1) is fixedly connected with two rotating shafts (15).

4. The pin structure according to claim 1, characterized in that: A limiting stabilizing block (16) is fixedly connected to the top center of the pin (2), and the top of the limiting stabilizing block (16) is slidably connected to the top of the inner wall of the outer shell (1).

5. A pin structure according to claim 1, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a limiting shaft (17), and the top of the pressure block (7) is provided with multiple anti-slip textures (18).

6. The pin structure according to claim 1, characterized in that: The bottom left side of the pressure block (7) is slidably connected to the inner wall of the pressure groove (5), and the inner wall of the slot (8) is slidably connected to the bottom of the card block (11).

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