A snap-fit hook structure

Abstract

The utility model provides a kind of buckling type lock hook structure, belong to mechanical lock technical field.It solves the problem of the noise and the laborious operation of the lock of prior art due to rigid impact when finally locking.The buckling type lock hook structure includes: lock hook seat, lock hook and the second cavity for the swing of lock hook are rotatably arranged on lock hook seat, and lock hook has locking part;Lock bolt seat, lock bolt and the first cavity that can be communicated with second cavity are arranged on lock bolt seat;Lock hook and lock bolt are configured as: when needing to lock, lock hook is rotated forward, locking part can enter first cavity and lock with lock bolt, and lock hook seat and lock bolt seat are locked;When needing to unlock, lock hook is rotated reversely, locking part is separated from lock bolt and first cavity, and lock hook seat and lock bolt seat are separated.By the rotation setting of lock hook and the buffering cooperation of elastic element, the impact energy when closing door is effectively absorbed, the noise and structural wear are significantly reduced, and the operation comfort and service life are improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical locking technology and relates to a snap-fit ​​locking hook structure. Background Technology

[0002] Currently, sliding doors used for equipment maintenance commonly employ closure mechanisms such as latches, rotary handles, or industrial quick-locks. These traditional closure mechanisms are often time-consuming and labor-intensive in practice: operators typically need to apply significant torque or pressure to lock the door, the process is cumbersome, and specific operational postures are required. This is especially inefficient in scenarios requiring frequent opening and closing or where space is limited. Furthermore, the door experiences significant rigid impact when closing, generating unpleasant noise. Over time, this can easily lead to loosening or damage to the door and lock itself due to the impact, becoming a key factor affecting the user experience and lifespan of the locking mechanism. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a locking hook structure with a rotating locking hook, which solves the problems of high noise and laborious operation when closing the door.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] The snap-lock hook structure includes:

[0006] A locking hook seat, wherein a locking hook and a second cavity for the locking hook to swing are rotatably provided on the locking hook seat, and the locking hook has a locking part;

[0007] The latch seat has a latch and a first cavity that can communicate with the second cavity; the lock hook and the latch are configured as follows:

[0008] When locking is required, the locking hook is rotated in the forward direction, and the locking part can enter the first cavity and lock with the locking tongue, and the locking hook seat and the locking tongue seat are locked together.

[0009] When unlocking is required, the lock hook is rotated in the opposite direction, the locking part disengages from the latch and the first cavity, and the lock hook seat separates from the latch seat.

[0010] In the above-mentioned snap-fit ​​hook structure, a handle pressure block is provided at the end of the hook away from the locking part. The handle pressure block is located outside the second cavity. The distance from the center line of the hook rotation to the lowest edge of the handle pressure block is greater than the distance from the center of the hook rotation to the front end of the locking part.

[0011] The handle pressure block and the locking hook form a lever structure with the rotation center of the locking hook as the fulcrum. The distance between the handle pressure block, the locking part and the rotation center line of the locking hook is set in such a way that the lever arm from the handle pressure block to the fulcrum is greater than the lever arm from the locking part to the fulcrum, thus forming a force-saving lever structure.

[0012] In the above-mentioned snap-fit ​​hook structure, one side of the hook is rotatably connected to the second cavity, and the other side of the hook is provided with a first slot and a second slot. The hook seat is provided with a pre-tightening component for engaging the first slot or the second slot. When the pre-tightening component engages the first slot, the hook is in an unlocked state, and when the pre-tightening component engages the second slot, the hook is in a locked state.

[0013] In the above-described snap-fit ​​hook structure, the pre-tightening assembly includes a sliding block slidably disposed on the hook seat, a pre-tightening element disposed on the sliding block, and an elastic element. The shape of the pre-tightening element is adapted to the first and second slots. The direction of the elastic force applied by the elastic element to the sliding block always points towards the rotation center of the hook.

[0014] In the above-mentioned snap-fit ​​locking hook structure, the pre-tightening member is a roller and is rotatably mounted on the sliding block, and the rotation center line of the roller is parallel to the rotation center line of the locking hook.

[0015] In the above-mentioned snap-fit ​​locking hook structure, the locking hook seat is provided with a sliding groove, and the sliding block is slidably disposed in the sliding groove.

[0016] In the above-mentioned snap-fit ​​hook structure, the latch is rotatably mounted on the latch seat, the rotation center line of the latch is parallel to the rotation center line of the hook, and the latch seat and / or the latch are provided with a limiting component for limiting the swing angle of the latch.

[0017] In the above-mentioned snap-fit ​​hook structure, the limiting component includes an arc-shaped buffer groove on the latch seat and a limiting member on the latch, the limiting member being able to swing along the buffer groove.

[0018] In the above-mentioned snap-fit ​​hook structure, an elastic element is provided between the latch seat and the latch.

[0019] When the pre-tightening element in the lock hook seat is engaged in the second slot on the lock hook, the door is closed. The elastic element can effectively prevent the locking part on the lock hook from rigidly colliding with the lock tongue. This not only effectively protects the locking part and the lock tongue, but also avoids noise caused by the rigid collision between the locking part and the lock tongue. At the same time, it can ensure that the lock tongue can be reset along the buffer groove.

[0020] In the above-mentioned snap-fit ​​hook structure, a second roller is rotatably provided at the free end of the latch, and the rotation center line of the second roller is parallel to the rotation center line of the latch. When locked, the locking part presses on the second roller.

[0021] To detect whether the door is fully closed, a closure monitoring element, such as a microswitch or a proximity sensor, is installed on the side of the latch seat near the latch seat. This closure monitoring element will output a switch signal to the control system, indicating that the door is fully closed.

[0022] Compared with existing technologies, this snap-fit ​​locking hook structure has the following advantages:

[0023] The handle pressure block and locking hook form a force-saving lever structure with the locking hook's rotation center as the fulcrum, making operation easier and less strenuous. It integrates guiding, limiting, buffering, and monitoring functions into a compact structure. The rotational setting of the locking hook, combined with the buffering action of the elastic element, effectively absorbs the impact energy during door closing, significantly reducing noise and structural wear, and improving operational comfort and service life. The pre-tightening component ensures stable positioning of the locking hook in both unlocked and locked states, preventing rigid impacts caused by misoperation. The closure monitoring element can monitor whether the door is fully closed in real time, enhancing safety and reliability, and is suitable for various scenarios such as equipment maintenance and sliding door repair. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the interlocking hook structure in the unlocked state.

[0025] Figure 2 This is a schematic diagram of the interlocking hook structure in the locked state.

[0026] Figure 3 This is a schematic diagram of the structure of the lock hook seat and the lock hook.

[0027] Figure 4 This is a schematic diagram of the latch seat and the latch.

[0028] In the figure, 1 is the locking tongue seat; 10 is the first cavity; 11 is the buffer groove; 12 is the positioning shaft; 13 is the elastic element; 2 is the locking hook seat; 20 is the second cavity; 21 is the slide groove; 22 is the hinge seat; 3 is the locking tongue; 31 is the limiting element; 4 is the locking hook; 40 is the locking part; 41 is the first slot; 42 is the second slot; 43 is the handle pressure block; 5 is the sliding block; 6 is the pre-tightening element; 7 is the elastic element; 8 is the second roller; and 9 is the closure monitoring element. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1 and Figure 2 The shown latching hook 4 structure includes a latch seat 1 mounted on the frame and a hook seat 2 mounted on the door. The hook seat 2 is plate-shaped with a second cavity 20 on one side. A hinge seat 22 is fixed inside the second cavity 20. The middle part of an arc-shaped hook 4 is hinged to the hinge seat 22, allowing the hook 4 to rotate back and forth around the hinge seat 22 within the second cavity 20. To facilitate control of the rotation of the hook 4, such as... Figure 1 and Figure 2As shown, the rear end of the lock hook 4 (the end away from the lock tongue seat 1) is provided with a handle pressure block 43.

[0031] like Figure 1 As shown, the handle pressure block 43 is located outside the second cavity 20. The distance from the rotation center line of the locking hook 4 to the lowest edge of the handle pressure block 43 is greater than the distance from the rotation center of the locking hook 4 to the foremost end of the locking part 40. The handle pressure block 43 and the locking hook 4 form a lever structure with the rotation center of the locking hook 4 as the fulcrum. The distance between the handle pressure block 43, the locking part 40, and the rotation center line of the locking hook 4 is set in such a way that the lever arm from the handle pressure block 43 to the fulcrum is greater than the lever arm from the locking part 40 to the fulcrum, thus forming a force-saving lever structure.

[0032] In this embodiment, as Figure 3 As shown, a first slot 41 and a second slot 42 are provided on the side of the locking hook 4 away from the hinge seat 22. The first slot 41 and the second slot 42 are smoothly transitioned by a convex arc surface. A pre-tightening component that can be engaged in the first slot 41 / second slot 42 is provided on the locking hook seat 2. When the pre-tightening component is engaged in the first slot 41, the locking hook 4 is in the unlocked state. When the pre-tightening component is engaged in the second slot 42, the locking hook 4 is in the locked state.

[0033] Specifically, such as Figure 1-3 As shown, a sliding groove 21 is provided on the lock hook seat 2. This sliding groove 21 communicates with the second cavity 20, and one end of the sliding groove 21 is positioned directly opposite the hinge seat 22. Figure 3 As shown, the pre-tightening assembly includes a sliding block 5 slidably disposed within the slide groove 21, a pre-tightening member 6 disposed on the sliding block 5, and an elastic member 7. The shape of the pre-tightening member 6 is adapted to the first slot 41 and the second slot 42. The elastic member 7 is a spring and is disposed at the end of the sliding block 5 away from the hinge seat 22. Preferably, the direction of the spring force applied to the sliding block 5 always points towards the rotation center line of the locking hook 4.

[0034] When the locking hook 4 rotates, the side of the locking hook 4 away from the hinge seat 22 continuously presses against the sliding block 5, causing the sliding block 5 to slide back and forth within the slide groove 21. When the first slot 41 rotates to a position opposite to the pre-tensioning member 6, the pre-tensioning member 6 engages with the first slot 41 under the action of the spring, keeping the locking hook 4 in the unlocked state; when the second slot 42 rotates to a position opposite to the pre-tensioning member 6, the pre-tensioning member 6 engages with the second slot 42 under the action of the spring, keeping the locking hook 4 in the locked state.

[0035] To reduce friction, the preload 6 in this embodiment is a roller rotatably mounted on the sliding block 5. The rotation center line of the roller is parallel to the rotation center line of the locking hook 4. The roller can engage with the first slot 41 or the second slot 42 during the opening and closing of the locking hook 4. A spring ensures that the roller remains in contact with the side of the locking hook 4 away from the hinge seat 22.

[0036] like Figure 1-3 As shown, the front end of the lock hook 4 (the end near the lock tongue seat 1) is provided with a hook-shaped locking part 40. The concave side of the locking part 40 faces the hinge seat 22, and the concave side can be locked with the lock tongue 3 provided on the lock tongue seat 1.

[0037] like Figure 4 As shown, a first cavity 10 is formed on one side of the latch seat 1. A positioning shaft 12 is vertically arranged in the first cavity 10. The latch 3 is rotatably arranged on the positioning shaft 12 and can rotate around the positioning shaft 12 within a certain range.

[0038] In order to limit the swing angle of the locking tongue 3, such as Figure 4 As shown, an arc-shaped buffer groove 11 is provided in the first cavity 10. The center of the arc in which the buffer groove 11 is located is the center of the positioning shaft 12. A limiting member 31 extending into the buffer groove 11 is provided at the free end of the locking tongue 3 (the end away from the positioning shaft 12). In this embodiment, the limiting member 31 is cylindrical. The initial position of the locking tongue 3 is located at the end of the buffer groove 11 near the locking hook seat 2, and the maximum swing position of the locking tongue 3 is at the end of the buffer groove 11 away from the locking hook seat 2.

[0039] An elastic element 13 is provided between the latch seat 1 and the latch 3. The elastic element 13 includes, but is not limited to, a spring, a tension spring, or a torsion spring.

[0040] When the pre-tightening member 6 in the lock hook seat 2 is engaged in the second slot 42 on the lock hook 4, the door is closed. The elastic element 13 can effectively prevent the rigid collision between the locking part 40 on the lock hook 4 and the lock tongue 3. It can not only effectively protect the locking part 40 and the lock tongue 3, but also avoid the noise caused by the rigid collision between the locking part 40 and the lock tongue 3. At the same time, it can ensure that the lock tongue 3 can be reset along the buffer groove 11.

[0041] When the elastic element 13 is a spring, one end of the spring acts on the limiting member 31, and the other end of the spring acts on the locking tongue seat 1. Under the action of the spring, the limiting member 31 abuts against the end of the buffer groove 11 near the locking hook seat 2.

[0042] When the elastic element 13 is a torsion spring, it is sleeved on the positioning shaft 12. One end of the torsion spring acts on the locking tongue seat 1, and the other end acts on the locking tongue 3.

[0043] In other embodiments, the limiting member 31 is fixed on the locking tongue seat 1, and the locking tongue 3 abuts against the limiting member 31 under the action of the elastic element 13.

[0044] like Figure 2 and Figure 4As shown, in order to facilitate the release of the locking hook 4 from the inside of the locking tongue 3 during unlocking, a second roller 8 is rotatably provided at the free end of the locking tongue 3. The rotation center line of the second roller 8 is parallel to the rotation center line of the locking tongue 3. When locking, the locking part 40 presses on the second roller 8, which not only ensures that the locking hook 4 has a certain limiting function when rotating, but also ensures that the locking hook 4 can stably and reliably achieve the locking action.

[0045] When the door is closed due to improper operation of the locking hook 4, that is, when the pre-tightening member 6 in the locking hook seat 2 is engaged in the second slot 42 on the locking hook 4, the locking hook 4 will push the locking tongue 3 to rotate to the maximum swing angle (such as 90°) and then stop. At this time, the limiting member 31 moves from the end of the buffer groove 11 near the locking hook seat 2 to the end of the buffer groove 11 away from the locking hook seat 2. The elastic element 13 deforms to absorb the impact energy, avoid structural damage, effectively protect the locking hook 4, and improve its service life and operational safety.

[0046] After the locking hook 4 is released, the locking tongue 3 is reset by means of the elastic element between the locking tongue 3 and the locking tongue seat 1.

[0047] When the door closes, the operator pushes the handle pressure block 43. The arc-shaped locking part 40 at the front end of the lock hook 4 first contacts the latch 3 installed on the frame. Guided by the arc-shaped surface, the lock hook 4 slides into the latch 3, achieving complete closure. During this process, the pre-tightening member 6 will embed into the second slot 42 on the lock hook 4.

[0048] When the locking hook 4 reaches the fully closed or open position, the preload 6 will engage with the first slot 41 / second slot 42 to achieve precise travel limit and locking.

[0049] To detect whether the door is fully closed, a closure monitoring element 9, such as a micro switch or a proximity sensor, is installed on the side of the latch seat 1 near the latch seat 2. This closure monitoring element 9 will output a switch signal to the control system, indicating that the door is fully closed.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A snap-fit ​​locking hook structure, characterized in that, include: The locking hook seat (2) is rotatably provided with a locking hook (4) and a second cavity (20) for the locking hook (4) to swing. The locking hook (4) has a locking part (40). A latch seat (1) is provided with a latch (3) and a first cavity (10) that can communicate with the second cavity (20); the latch hook (4) and the latch (3) are configured as follows: When locking is required, the locking hook (4) is rotated in the forward direction, and the locking part (40) can enter the first cavity (10) and lock with the locking tongue (3), and the locking hook seat (2) and the locking tongue seat (1) are locked together; When unlocking is required, the lock hook (4) is rotated in the opposite direction, the locking part (40) disengages from the lock tongue (3) and the first cavity (10), and the lock hook seat (2) separates from the lock tongue seat (1).

2. The snap-fit ​​locking hook structure according to claim 1, characterized in that, The locking hook (4) has a handle pressure block (43) at one end away from the locking part (40). The handle pressure block (43) is located outside the second cavity (20). The distance from the rotation center line of the locking hook (4) to the lowest edge of the handle pressure block (43) is greater than the distance from the rotation center of the locking hook (4) to the front end of the locking part (40).

3. The snap-fit ​​locking hook structure according to claim 1 or 2, characterized in that, The locking hook (4) is rotatably connected to the second cavity (20) on one side, and the locking hook (4) is provided with a first slot (41) and a second slot (42) on the other side. The locking hook seat (2) is provided with a pre-tightening component for engaging the first slot (41) or the second slot (42). When the pre-tightening component engages the first slot (41), the locking hook (4) is in an unlocked state. When the pre-tightening component engages the second slot (42), the locking hook (4) is in a locked state.

4. The snap-fit ​​locking hook structure according to claim 3, characterized in that, The pre-tightening assembly includes a sliding block (5) slidably disposed on the locking hook seat (2), a pre-tightening member (6) disposed on the sliding block (5), and an elastic member (7). The shape of the pre-tightening member (6) is adapted to the first slot (41) and the second slot (42).

5. The snap-fit ​​locking hook structure according to claim 4, characterized in that, The pre-tightening member (6) is a roller and is rotatably mounted on the sliding block (5). The rotation center line of the roller is parallel to the rotation center line of the locking hook (4).

6. The snap-fit ​​locking hook structure according to claim 4 or 5, characterized in that, The locking hook seat (2) is provided with a sliding groove (21), and the sliding block (5) is slidably disposed in the sliding groove (21).

7. The snap-fit ​​locking hook structure according to any one of claims 1, 2, 4, or 5, characterized in that, The latch (3) is rotatably mounted on the latch seat (1). The rotation center line of the latch (3) is parallel to the rotation center line of the lock hook (4). The latch seat (1) and / or the latch (3) are provided with a limiting component for limiting the swing angle of the latch (3).

8. The snap-fit ​​locking hook structure according to claim 7, characterized in that, The limiting component includes an arc-shaped buffer groove (11) on the latch seat (1) and a limiting member (31) on the latch (3), the limiting member (31) being able to swing along the buffer groove (11).

9. The interlocking hook structure according to claim 1, 2, 4, 5, or 8, characterized in that, An elastic element (13) is provided between the latch seat (1) and the latch (3).

10. The interlocking hook structure according to claim 1, 2, 4, 5, or 8, characterized in that, The free end of the latch (3) is provided with a second roller (8), the center line of rotation of the second roller (8) is parallel to the center line of rotation of the latch (3), and when locked, the locking part (40) presses on the second roller (8).

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