Spring bolt locking mechanism

Abstract

The utility model discloses a lock tongue locking mechanism which comprises a shell, an upper cover, a rotating disc and locking assemblies, the upper cover is rotationally connected to the shell through a rotating shaft, the rotating disc is rotationally connected to the upper cover, the two locking assemblies are symmetrically arranged on the two sides of the rotating disc, each locking assembly comprises a pull tongue, a connecting rod and an inclined tongue which are sequentially connected, a spring is arranged on the connecting rod in a sleeved mode, and the spring is arranged on the rotating disc. Eccentric arc-shaped grooves are formed in the two ends of the rotating disc, and one ends of the two pull tongues are connected into the two arc-shaped grooves in a sliding mode through pins respectively; a connecting rod sliding groove is formed in the other end of the pull tongue, one end of the connecting rod is arranged in the connecting rod sliding groove in a sliding mode through a sliding block, a step used for limiting the sliding block is arranged at the end, close to the inclined tongue, of the connecting rod sliding groove, the other end of the connecting rod is clamped in a clamping groove in the inclined tongue, and a limiting plate used for limiting the end of the spring is arranged between the inclined tongue and the pull tongue. The two ends of the spring abut against the end of the limiting plate and the end of the latch bolt respectively. The end, away from the pull tongue, of the latch bolt is provided with a spring bolt slope. The service life of the spring bolt locking mechanism can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of locking devices, in particular to a bolt locking mechanism. Background Art

[0002] In the prior art, a mechanical locking structure is often used to open or lock a device. When in use, the lock tongue is extended by a handle or a key to achieve locking. When unlocking is required, the lock tongue is retracted to unlock the device. However, if the lock tongue is in an extended state before locking and the user fails to pay attention, the lock tongue or the lock point position may be deformed or damaged due to forced closing, thereby reducing the service life of the locking structure. Utility Model Content

[0003] The purpose of the utility model is to provide a bolt locking mechanism to solve the problems existing in the above-mentioned prior art, to avoid deformation and damage of the latch bolt or the locking point of the shell caused by the upper cover being forcibly closed when the latch bolt has not been pulled back, and to improve the service life.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a bolt locking mechanism, comprising a lower shell, an upper cover, a rotating disk and a locking assembly, wherein the upper cover is rotatably connected to the lower shell through a rotating shaft, the rotating disk is rotatably connected to the upper cover, two locking assemblies are symmetrically arranged on both sides of the rotating disk, the locking assembly comprises a pull tongue, a connecting rod and an inclined tongue connected in sequence, the pull tongue and the inclined tongue are slidably arranged in a slideway on the upper cover along the same straight line, and a spring is sleeved on the connecting rod; eccentric arc grooves are arranged at both ends of the rotating disk, one end of the two pull tongues is slidably connected in the two arc grooves through a pin respectively; the other end of the pull tongue is There is a connecting rod slot, one end of the connecting rod is slidably arranged in the connecting rod slot through a slider, the end of the connecting rod slot close to the inclined tongue is provided with a step for limiting the slider, the other end of the connecting rod is clamped in the slot on the inclined tongue, the slot is provided at one end of the inclined tongue close to the pull tongue, a limiting plate for limiting the end of the spring is provided on the upper cover between the inclined tongue and the pull tongue, the two ends of the spring are respectively abutted against the limiting plate and the end of the inclined tongue, and a locking tongue inclined surface is provided at the end of the inclined tongue away from the pull tongue, which is used to cooperate with the locking point on the lower shell body to lock the upper cover.

[0006] Preferably, it further comprises a hand wheel and a password lock, wherein the hand wheel is coaxially fixedly connected to the turntable, and the password lock is used to lock the hand wheel on the upper cover or unlock the hand wheel.

[0007] Preferably, the combination lock comprises a lock ring, a lock disk, a lock core, a lock shaft and a plurality of combination wheels, the lock ring being fixed on the upper cover, a locking groove being provided on the lock ring, the lock disk being rotatably arranged in the lock ring and being coaxially fixedly connected to the rotating disk, the hand wheel being fixed on the lock disk, each of the combination wheels being arranged in a wheel groove on the lock disk and being rotatably connected to the lock shaft, an unlocking groove being provided on the end surface of the combination wheel, the lock core being slidably arranged in a lock core groove on the lock disk, a first lock protrusion being provided on the lock core which cooperates with each of the unlocking grooves to unlock the lock, and a first lock protrusion being provided on the lock core which cooperates with the locking groove to lock the lock disk The second locking protrusion on the locking ring is a triangular locking protrusion. A limiting protrusion is provided at one end of the locking shaft. The end face of the limiting protrusion abuts against the limiting surface on the lock disk and abuts against the extrusion portion on the lock core. A spring is sleeved on the locking shaft. The two ends of the spring respectively abut against the limiting protrusion and the end face of the password wheel adjacent to the limiting protrusion. The spring provides elastic force to drive the limiting protrusion to abut against the limiting surface, and can squeeze the extrusion portion through the limiting protrusion to make the second locking protrusion on the lock core enter the locking groove, while the first locking protrusions respectively disengage from the unlocking grooves.

[0008] Compared with the prior art, the utility model has achieved the following technical effects:

[0009] The lock tongue locking mechanism provided by the utility model has a lock tongue locking mechanism that, when the upper cover encounters the lower shell body during closing, the lock tongue inclined surface causes the inclined tongue to be pushed back by the lower shell body, and at the same time compresses the spring, and when the obstruction of the lower shell body is eliminated, the spring can push the inclined tongue out again, thereby locking the upper cover without using a hand wheel to lock, thus avoiding deformation and damage of the inclined tongue or the locking point of the lower shell body caused by the upper cover being forcibly closed when the inclined tongue has not been pulled back, and improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A structural schematic diagram of the bolt locking mechanism provided by the utility model;

[0012] Figure 2 This is a schematic diagram of the structural relationship between the upper cover, the hand wheel and the password lock in the utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of the upper cover in the utility model;

[0014] Figure 4 This is a schematic diagram of the structural relationship between the upper cover, the rotating disk and the locking assembly in the utility model;

[0015] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A;

[0016] Figure 6 It is a schematic diagram of the locking assembly of the present invention when it is in an unlocked state;

[0017] Figure 7 This is a schematic diagram of the structural relationship between the hand wheel and the password lock in the utility model;

[0018] Figure 8 This is a schematic diagram of the structure of the password lock in the utility model;

[0019] Fig. 9 It is a cross-sectional view of the connection structure of the hand wheel, the password lock and the turntable in the utility model.

[0020] In the figure: 1-lower shell, 2-upper cover, 3-turntable, 4-pull tongue, 5-connecting rod, 6-oblique tongue, 7-slide, 8-spring, 9-arc groove, 10-pin, 11-connecting rod slide groove, 12-slider, 13-step, 14-slot, 15-limiting plate, 16-lock tongue inclined surface, 17-handwheel, 18-lock ring, 19-lock disk, 20-lock cylinder, 21-lock shaft, 22-code wheel, 23-locking groove, 24-unlocking groove, 25-first lock convex, 26-second lock convex, 27-limiting convex ring, 28-limiting surface, 29-extrusion part, 30-return spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model aims to provide a bolt locking mechanism to solve the problems existing in the prior art, and can prevent the upper cover from being forcibly closed when the oblique tongue has not been pulled back, thereby preventing the oblique tongue or the locking point of the shell from being deformed or damaged, thereby improving the service life.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1-Figure 9As shown, this embodiment provides a bolt locking mechanism, including a lower shell 1, an upper cover 2, a rotating disk 3 and a locking assembly. The upper cover 2 is rotatably connected to the lower shell 1 through a rotating shaft, and the rotating disk 3 is rotatably connected to the upper cover 2. Two locking assemblies are symmetrically arranged on both sides of the rotating disk 3. The locking assembly includes a pull tongue 4, a connecting rod 5 and an inclined tongue 6 connected in sequence. The pull tongue 4 and the inclined tongue 6 are slidably arranged in a slideway 7 on the upper cover 2 along the same straight line, and a spring 8 is sleeved on the connecting rod 5; eccentric arc grooves 9 are arranged at both ends of the rotating disk 3, and one end of the two pull tongues 4 is slidably connected to the two arc grooves 9 through a pin 10 respectively; the other end of the pull tongue 4 is There is a connecting rod slot 11, one end of the connecting rod 5 is slidably set in the connecting rod slot 11 through a slider 12, and a step 13 for limiting the slider 12 is provided at the end of the connecting rod slot 11 close to the inclined tongue 6. The other end of the connecting rod 5 is clamped in the clamping groove 14 on the inclined tongue 6, and the clamping groove 14 is set at the end of the inclined tongue 6 close to the pull tongue 4. A limiting plate 15 for limiting the end of the spring 8 is provided on the upper cover 2 between the inclined tongue 6 and the pull tongue 4. The two ends of the spring 8 are respectively abutted against the limiting plate 15 and the end of the inclined tongue 6. A locking tongue inclined surface 16 is provided at the end of the inclined tongue 6 away from the pull tongue 4, which is used to cooperate with the locking point on the lower shell 1 to lock the upper cover 2.

[0025] It also includes a hand wheel 17 and a password lock. The hand wheel 17 is coaxially fixedly connected to the turntable 3. The password lock is used to lock the hand wheel 17 on the upper cover 2 or unlock the hand wheel 17.

[0026] In this embodiment, the combination lock includes a lock ring 18, a lock disk 19, a lock core 20, a lock shaft 21 and a plurality of combination wheels 22. The lock ring 18 is fixed to the upper cover 2, and a locking groove 23 is provided on the lock ring 18. The lock disk 19 is rotatably arranged in the lock ring 18 and is coaxially fixedly connected to the turntable 3. The handwheel 17 is fixed to the lock disk 19. Each combination wheel 22 is arranged in a wheel groove on the lock disk 19 and is rotatably connected to the lock shaft 21. The end surface of the combination wheel 22 is provided with an unlocking groove 24. The lock core 20 is slidably arranged in the lock core groove on the lock disk 19. The lock core 20 is provided with a first lock protrusion 25 that cooperates with each unlocking groove 24 to unlock. The lock core 20 is also provided with a lock protrusion 25 that cooperates with the locking groove 23 to lock the lock disk 19 in the lock. The second locking protrusion 26 on the ring 18 is a triangular locking protrusion. A limiting protrusion 27 is provided at one end of the lock shaft 21. The end face of the limiting protrusion 27 abuts against the limiting surface 28 on the lock disk 19 and abuts against the extrusion portion 29 on the lock core 20. A return spring 30 is sleeved on the lock shaft 21. The two ends of the return spring 30 respectively abut against the limiting protrusion 27 and the end face of the password wheel 22 adjacent to the limiting protrusion 27. The return spring 30 provides elastic force to drive the limiting protrusion 27 to abut against the limiting surface 28, and can squeeze the extrusion portion 29 through the limiting protrusion 27 to make the second locking protrusion 26 on the lock core 20 enter the locking groove 23, and at the same time, each first locking protrusion 25 respectively disengages from each unlocking groove 24.

[0027] When each code wheel 22 rotates to the correct position, the code is dialed correctly, each unlocking groove 24 is aligned with each first locking protrusion 25, and the end face of the code wheel 22 loses the limit on the first locking protrusion 25. Through the matching relationship between the inclined surface of the triangular locking protrusion and the locking groove 23, the hand wheel 17 and the lock plate 19 can rotate and push the lock cylinder 20 to move, so that the second locking protrusion 26 is separated from the locking groove 23. At the same time, each first locking protrusion 25 enters each unlocking groove 24, realizing the unlocking of the lock plate 19 and the hand wheel 17. When the lock cylinder 20 moves The lock shaft 21 is also pushed to move and the return spring 30 is compressed through the extrusion portion 29; when the hand wheel 17 and the lock disk 19 need to be locked, the hand wheel 17 is rotated in the opposite direction until the locking groove 23 moves to the corresponding position of the second locking protrusion 26. Under the elastic force of the return spring 30, the second locking protrusion 26 gradually enters the locking groove 23. At the same time, each first locking protrusion 25 is separated from each unlocking groove 24. The password wheels 22 are rotated to disrupt the password, so that the end face of at least one password wheel 22 forms a limit to the first locking protrusion 25, thereby achieving locking.

[0028] The locking process of the upper cover 2 is as follows: the hand wheel 17 can rotate after the password is dialed correctly. At this time, the hand wheel 17 drives the turntable 3 to rotate, and the pins 10 on the turntable 3 are driven by the arc grooves 9 on the turntable 3, so that the pins 10 on both sides move outward, driving the pull tongue 4 to move outward, and at the same time, the inclined tongue 6 is extended outward under the action of the spring 8 to achieve locking, and the upper cover 2 is locked on the lower shell 1.

[0029] The unlocking process of the upper cover 2 is as follows: the hand wheel 17 is rotated in the reverse direction, and the rotation of the hand wheel 17 drives the turntable 3 to rotate, and the turntable 3 drives the pins 10 on both sides to move inward, and drives the pull tongue 4 to move inward. Under the action of the step 13, the pull tongue 4 pulls the inclined tongue 6 inward through the connecting rod 5 until the inclined tongue 6 is fully retracted, completing the unlocking action, and the upper cover 2 can be opened at this time.

[0030] The bolt locking mechanism provided by the utility model, when the oblique bolt 6 is in the locked state, when the upper cover 2 is closed and encounters the lower shell 1, the oblique bolt 6 is pushed back by the lower shell 1 through the oblique surface 16 of the bolt, and the spring 8 is compressed at the same time. After the obstruction of the lower shell 1 is eliminated, the spring 8 can push the oblique bolt 6 out again to achieve the locking of the upper cover 2, and there is no need to lock it through the hand wheel 17, so as to avoid the deformation and damage of the locking point position of the oblique bolt 6 or the lower shell 1 caused by the upper cover 2 being forcibly closed when the oblique bolt 6 has not been pulled back, thereby improving the service life of the device. After the upper cover 2 is unlocked, the hand wheel 17 can be directly reset, and the password can be disrupted, and then the upper cover 2 can be directly locked, which is very convenient to use.

[0031] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A bolt locking mechanism, characterized in that: The invention comprises a shell, an upper cover, a rotating disk and a locking assembly, wherein the upper cover is rotatably connected to the shell through a rotating shaft, the rotating disk is rotatably connected to the upper cover, two locking assemblies are symmetrically arranged on both sides of the rotating disk, the locking assembly comprises a pull tab, a connecting rod and an inclined tongue connected in sequence, the pull tab and the inclined tongue are slidably arranged in a slideway on the upper cover along the same straight line, and a spring is sleeved on the connecting rod; eccentric arc grooves are arranged at both ends of the rotating disk, one end of the two pull tabs is slidably connected in the two arc grooves through pins respectively; the other end of the pull tab is provided with a connecting rod slide groove, and the connecting rod slide groove is provided. One end of the rod is slidably arranged in the connecting rod slot through a slider, and the end of the connecting rod slot close to the oblique tongue is provided with a step for limiting the slider, and the other end of the connecting rod is clamped in the slot on the oblique tongue, and the slot is arranged at one end of the oblique tongue close to the pull tongue, and a limiting plate for limiting the end of the spring is provided on the upper cover between the oblique tongue and the pull tongue, and the two ends of the spring are respectively abutted against the limiting plate and the end of the oblique tongue, and a locking tongue inclined surface is provided at the end of the oblique tongue away from the pull tongue, which is used to cooperate with the locking point on the shell to lock the upper cover.

2. The bolt locking mechanism according to claim 1, characterized in that: It also includes a handwheel and a password lock, wherein the handwheel is coaxially fixedly connected to the turntable, and the password lock is used to lock the handwheel on the upper cover or unlock the handwheel.

3. The bolt locking mechanism according to claim 2, characterized in that: The combination lock comprises a lock ring, a lock disk, a lock core, a lock shaft and a plurality of combination wheels, wherein the lock ring is fixed on the upper cover, a locking groove is provided on the lock ring, the lock disk is rotatably arranged in the lock ring and is coaxially fixedly connected to the rotating disk, the hand wheel is fixed on the lock disk, each combination wheel is arranged in a wheel groove on the lock disk and is rotatably connected to the lock shaft, an unlocking groove is provided on the end surface of the combination wheel, the lock core is slidably arranged in the lock core groove on the lock disk, a first lock protrusion is provided on the lock core that cooperates with each unlocking groove to unlock, and a first lock protrusion is provided on the lock core that cooperates with the locking groove to lock the lock disk in the lock core. The second locking protrusion on the lock ring is a triangular locking protrusion. A limiting protrusion is provided at one end of the lock shaft. The end face of the limiting protrusion abuts against the limiting surface on the lock disk and abuts against the extrusion part on the lock core. A spring is sleeved on the lock shaft. The two ends of the spring respectively abut against the limiting protrusion and the end face of the password wheel adjacent to the limiting protrusion. The spring provides elastic force to drive the limiting protrusion to abut against the limiting surface, and can squeeze the extrusion part through the limiting protrusion to make the second locking protrusion on the lock core enter the locking groove, and at the same time, each of the first locking protrusions respectively disengages from each of the unlocking grooves.

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