Self-locking cam lock

Abstract

The utility model discloses a self-locking cam lock, which belongs to the technical field of locks and comprises a boss, a protective component is arranged on one side of the boss, and a lock sleeve is connected to the other side of the boss. When the whole device does not need to be used, under the action of a connecting rotating shaft, a protecting disc is driven to rotate and be attached to a fixing ring, a pushing rod is loosened, a connecting spring loses external force and restores to the original appearance, and an adsorption plate is driven to move; the adsorption plate moves to drive the strong magnetic blocks on the adsorption plate and the strong magnetic blocks on the protection disc to be close to each other to be adsorbed and fixed, the two strong magnetic blocks are used for adsorbing and fixing the protection disc and the fixing ring, and under the action of the protection disc and the fixing ring, parts such as a locking opening on the boss can be protected. And dust and other impurities in the external environment are prevented from falling into the locking opening and other parts on the boss, so that the locking opening and other parts on the boss are prevented from being blocked, and the use effect of the whole device can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of locks, and particularly relates to a self-locking tongue lock. Background Art

[0002] Literally translated, a tongue lock is a cam lock. Tongue locks are widely used and can be classified into several categories according to their structures: plum blossom pin tumbler locks, blade tongue locks, triangular tongue locks, and double-sided pin tumbler tongue locks.

[0003] Chinese Patent Application No. 202221933671.X discloses a self-locking tongue lock, which belongs to the technical field of locks. It includes a lock shaft, a lock sleeve sleeved on the lock mouth end of the lock shaft, and a lock tongue connected to the lock post end of the lock shaft. By arranging an elastic member between the lock shaft and the lock sleeve and arranging a stop component between the lock shaft and the lock sleeve, the locking or unlocking of the two stop members in the stop component can be realized by the telescopic deformation of the elastic member, so as to realize the self-locking function of the tongue lock. The self-locking tongue lock of the utility model has a simple structure, is easy to install, is widely applicable, has a self-locking function, improves the safety and reliability of the door lock, and has good application prospects.

[0004] In the above patent, components such as a lock mouth and a mark are arranged on the convex platform, but the components such as the lock mouth and the mark are directly exposed outside, and sundries in the external environment adhere to the lock mouth and the mark, resulting in pollution of the lock mouth and the mark and affecting the subsequent use effects of the lock mouth, the mark, etc.; in addition, a lock tongue is sleeved on the lock shaft, but when an operator adjusts the positional relationship between the lock tongue and the lock shaft, it is difficult for the operator to judge the positional relationship between the lock tongue and the lock shaft, and thus the fixed position of the lock tongue cannot be determined, affecting the locking effect between the lock tongue and different door bodies. Summary of the Utility Model

[0005] In order to solve the problems raised in the above background art. The utility model provides a self-locking tongue lock, which has the characteristics of protection and distance setting.

[0006] To achieve the above object, the utility model provides the following technical solution: a self-locking tongue lock, including a convex platform, a protection component is arranged on one side of the convex platform, a lock sleeve is connected to the other side of the convex platform, a lock shaft is connected inside the lock sleeve, a fixed-length component is arranged inside the lock sleeve and on one side of the lock shaft, a lock tongue is sleeved on the outer side wall of the lock shaft, and pressing screws are connected to both sides of the lock tongue on the outer side wall of the lock shaft.

[0007] Preferably, the protection component includes a protection disk, a fixing ring, a connecting groove, a connecting rotating shaft and an adsorbing component. A fixing ring is connected to one side of the convex platform, a connecting groove is arranged on one side of the fixing ring, a connecting rotating shaft is connected inside the connecting groove, a protection disk is connected to one end of the connecting rotating shaft, and an adsorbing component is arranged between the protection disk and the fixing ring.

[0008] Preferably, the adsorbing component includes a connecting spring, an adsorption groove, a pushing groove, a pushing rod, an adsorption plate and a strong magnet. An adsorption groove is arranged inside the fixing ring, an adsorption plate is arranged inside the adsorption groove, a connecting spring is connected between the adsorption groove and the adsorption plate, one end of the adsorption plate is connected with a pushing rod, a pushing groove is arranged on the side wall of the adsorption groove at a position corresponding to the pushing rod, and strong magnets are connected to the sides of the adsorption plate and the protection disc close to each other.

[0009] Preferably, a guiding slider is connected to the end of the adsorption plate away from the pushing rod, and a guiding sliding groove is arranged on the side wall of the adsorption groove at a position corresponding to the guiding slider.

[0010] Preferably, the fixed-length component includes a scale, a cavity, a moving plate and a reset spring. A cavity is arranged inside the locking sleeve, a moving plate is arranged inside the cavity, a reset spring is connected between the cavity and the moving plate, and a scale is connected to the side of the moving plate away from the reset spring.

[0011] Preferably, the fixed-length component further includes a positioning block and a groove. One end of the scale is connected with a positioning block, a groove is arranged on the side wall of the cavity at a position corresponding to the positioning block, a positioning convex block is connected to the side wall of the positioning block, and a positioning groove is arranged on the side wall of the groove at a position corresponding to the positioning convex block.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model is provided with a protection component. When the whole device does not need to be used, under the action of the connecting rotating shaft, the protection disc is driven to rotate and fit the fixing ring, and the pushing rod is released. The connecting spring loses the external force and returns to its original state, driving the adsorption plate to move. The movement of the adsorption plate drives the strong magnet on the adsorption plate to approach and adsorb the strong magnet on the protection disc for fixing. By using the two strong magnets to adsorb and fix the protection disc and the fixing ring, the components such as the lock opening on the convex platform can be protected under the action of the protection disc and the fixing ring, preventing dust and other impurities in the external environment from falling into the components such as the lock opening on the convex platform, causing blockage of the components such as the lock opening on the convex platform, and thus ensuring the use effect of the whole device.

[0014] 2. The utility model is provided with a fixed-length component to adjust the positional relationship between the lock tongue and the lock shaft according to the size of the door body where the device is installed. First, pull the scale ruler towards the periphery of the cavity. The movement of the scale ruler drives the positioning block and the moving plate to move. The movement of the moving plate drives the reset spring to stretch. During the movement of the scale ruler, observe the distance between the end of the scale ruler and the lock sleeve. When the distance between the scale ruler and the lock sleeve reaches the required distance, then sleeved the lock tongue onto the lock shaft and make the lock tongue fit the end of the scale ruler. Then, use two pressure screws to tightly fix the lock tongue. Then release the scale ruler. The reset spring returns to its original state without external force, driving the moving plate to move, and further driving the scale ruler to move and retract into the cavity. Then install the entire device on the door body to be used to ensure the connection effect between the entire device and different door bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a cross-sectional view of the utility model;

[0017] Figure 3 is of the utility model Figure 2 an enlarged view of part A in;

[0018] Figure 4 is of the utility model Figure 2 an enlarged view of part B in;

[0019] Figure 5 is a cross-sectional view of the connection state of the fixing ring and the protection disc of the utility model;

[0020] Figure 6 is of the utility model Figure 5 an enlarged view of part C in.

[0021] In the figure: 1, boss; 2, protection component; 21, protection disc; 22, fixing ring; 23, connection groove; 24, connection rotating shaft; 25, adsorbing part; 251, connection spring; 252, adsorption groove; 253, pushing groove; 254, pushing rod; 255, adsorption plate; 256, strong magnet block; 3, lock sleeve; 4, lock tongue; 5, pressure screw; 6, lock shaft; 7, fixed-length component; 71, scale ruler; 72, cavity; 73, positioning block; 74, groove; 75, moving plate; 76, reset spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1

[0024] Please refer to Figures 1-6 , the present invention provides the following technical solutions: a self-locking tongue lock, including a boss 1, a protection component 2 is arranged on one side of the boss 1, a lock sleeve 3 is connected to the other side of the boss 1, a lock shaft 6 is connected inside the lock sleeve 3, a fixed-length component 7 is arranged inside the lock sleeve 3 and on one side of the lock shaft 6, a lock tongue 4 is sleeved on the outer side wall of the lock shaft 6, and pressing screws 5 are connected to both sides of the lock tongue 4 on the outer side wall of the lock shaft 6.

[0025] Specifically, the protection component 2 includes a protection disk 21, a fixing ring 22, a connection groove 23, a connection rotating shaft 24 and an adsorbing component 25. A fixing ring 22 is connected to one side of the boss 1, a connection groove 23 is arranged on one side of the fixing ring 22, a connection rotating shaft 24 is connected inside the connection groove 23, one end of the connection rotating shaft 24 is connected to a protection disk 21, and an adsorbing component 25 is arranged between the protection disk 21 and the fixing ring 22.

[0026] By adopting the above technical solutions, when the whole device needs to be used, first release the adsorption effect of the adsorbing component 25 on the protection disk 21, and then under the action of the connection rotating shaft 24, drive the protection disk 21 to rotate around the connection rotating shaft 24, so that the protection disk 21 moves away from the fixing ring 22, and then operate components such as the lock port on the boss 1 to control the whole device. After use, under the action of the connection rotating shaft 24, drive the protection disk 21 to rotate around the connection rotating shaft 24, so that the protection disk 21 fits the fixing ring 22, and use the adsorbing component 25 to adsorb and fix the protection disk 21 and the fixing ring 22. Under the action of the protection disk 21 and the fixing ring 22, protection operations can be carried out on components such as the lock port on the boss 1, avoiding dust and other impurities in the external environment from falling into components such as the lock port on the boss 1, causing blockage of components such as the lock port on the boss 1, and thus ensuring the use effect of the whole device.

[0027] Specifically, the adsorbing member 25 includes a connecting spring 251, an adsorption groove 252, a pushing groove 253, a pushing rod 254, an adsorption plate 255, and a strong magnet 256. An adsorption groove 252 is provided inside the fixing ring 22. An adsorption plate 255 is provided inside the adsorption groove 252. A connecting spring 251 is connected between the adsorption groove 252 and the adsorption plate 255. One end of the adsorption plate 255 is connected to a pushing rod 254. A pushing groove 253 is provided on the side wall of the adsorption groove 252 at a position corresponding to the pushing rod 254. Strong magnets 256 are connected to the sides of the adsorption plate 255 and the protection plate 21 that are close to each other.

[0028] By adopting the above technical solution, when it is necessary to release the adsorption of the adsorbing member 25 on the protection plate 21, first move the pushing rod 254 along the pushing groove 253. The movement of the pushing rod 254 drives the adsorption plate 255 to move into the adsorption groove 252. The movement of the adsorption plate 255 compresses the connecting spring 251 and the strong magnet 256 on the adsorption plate 255 away from the strong magnet 256 on the protection plate 21, so that the two strong magnets 256 are separated from each other and lose the adsorption and fixing effect. When it is necessary to use the adsorbing member 25 to adsorb the protection plate 21, release the pushing rod 254. The connecting spring 251 returns to its original state without external force, driving the adsorption plate 255 to move. The movement of the adsorption plate 255 drives the strong magnet 256 on the adsorption plate 255 to approach and adsorb and fix with the strong magnet 256 on the protection plate 21, and the two strong magnets 256 are used to perform the adsorption and fixing operation on the protection plate 21 and the fixing ring 22.

[0029] Specifically, a guiding slider is connected to the end of the adsorption plate 255 away from the pushing rod 254. A guiding chute is provided on the side wall of the adsorption groove 252 at a position corresponding to the guiding slider.

[0030] By adopting the above technical solution, the movement of the adsorption plate 255 drives the guiding slider to move inside the guiding chute. With the sliding cooperation of the guiding slider and the guiding chute, it can provide a guiding effect for the movement of the adsorption plate 255 and improve the stability of the movement of the adsorption plate 255.

[0031] When this embodiment is in use and the entire device needs to be used, first move the push rod 254 along the push groove 253. The movement of the push rod 254 drives the adsorption plate 255 to move inside the adsorption groove 252. The movement of the adsorption plate 255 squeezes the connecting spring 251 and the strong magnet block 256 on the adsorption plate 255 away from the strong magnet block 256 on the protection disk 21. Then, under the action of the connecting rotating shaft 24, drive the protection disk 21 to rotate around the connecting rotating shaft 24, so that the protection disk 21 moves away from the fixed ring 22. Then, operate the locking components such as the locking port on the boss 1 to drive the locking shaft 6 to rotate inside the locking sleeve 3. The rotation of the locking shaft 6 drives the locking tongue 4 to rotate, releasing the connection between the locking tongue 4 and the door body, thereby achieving the purpose of opening the door. Subsequently, use the same method to close the door body. Then, under the action of the connecting rotating shaft 24, drive the protection disk 21 to rotate around the connecting rotating shaft 24, so that the protection disk 21 fits the fixed ring 22, and release the push rod 254. The connecting spring 251 loses the external force and returns to its original state, driving the adsorption plate 255 to move. The movement of the adsorption plate 255 drives the strong magnet block 256 on the adsorption plate 255 to approach and adsorb and fix with the strong magnet block 256 on the protection disk 21. Use the two strong magnet blocks 256 to perform adsorption and fixation operations on the protection disk 21 and the fixed ring 22. Under the action of the protection disk 21 and the fixed ring 22, the locking components such as the locking port on the boss 1 can be protected, preventing dust and other impurities in the external environment from falling into the locking components such as the locking port on the boss 1, causing blockage of the locking components such as the locking port on the boss 1, and thus ensuring the use effect of the entire device;

[0032] Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 is that the fixed-length component 7 includes a scale 71, a cavity 72, a moving plate 75, and a return spring 76. A cavity 72 is provided inside the locking sleeve 3, a moving plate 75 is provided inside the cavity 72, a return spring 76 is connected between the cavity 72 and the moving plate 75, and a scale 71 is connected to the side of the moving plate 75 away from the return spring 76.

[0034] Specifically, the fixed-length component 7 further includes a positioning block 73 and a groove 74. One end of the scale 71 is connected to the positioning block 73. A groove 74 is provided on the side wall of the cavity 72 at a position corresponding to the positioning block 73. A positioning convex block is connected to the side wall of the positioning block 73, and a positioning groove is provided on the side wall of the groove 74 at a position corresponding to the positioning convex block.

[0035] By adopting the above technical solution, the movement of the scale 71 drives the movement of the positioning block 73. When the positioning block 73 moves into the groove 74, the positioning convex block is inserted into the positioning groove accordingly. Under the action of the positioning convex block and the positioning groove, the positioning block 73 can be positioned and fixed, and thus the scale 71 can be limited and fixed to ensure the stability of the placement of the scale 71.

[0036] When this embodiment is in use, the positional relationship between the locking tongue 4 and the locking shaft 6 is adjusted according to the size of the door body where the device is installed. First, pull the scale 71 towards the periphery of the cavity 72. The movement of the scale 71 drives the movement of the positioning block 73 and the moving plate 75. The movement of the moving plate 75 drives the stretching of the return spring 76. During the movement of the scale 71, observe the distance between the end of the scale 71 and the lock sleeve 3. When the distance between the scale 71 and the lock sleeve 3 reaches the required distance, then sleeve the locking tongue 4 onto the locking shaft 6 and make the locking tongue 4 fit against the end of the scale 71. Then, use the two pressure screws 5 to tightly fix the locking tongue 4. Then release the scale 71. The return spring 76 returns to its original state without external force, driving the movement of the moving plate 75, and further driving the movement of the scale 71 to be retracted into the cavity 72. Then install the entire device on the door body to be used to ensure the connection effect of the entire device with different door bodies.

[0037] Working principle and usage process of the present utility model: The present utility model adjusts the positional relationship between the lock tongue 4 and the lock shaft 6 according to the size of the door body where the device is installed. First, pull the scale 71 towards the periphery of the cavity 72. The movement of the scale 71 drives the movement of the positioning block 73 and the moving plate 75. The movement of the moving plate 75 drives the stretching of the return spring 76. During the movement of the scale 71, observe the distance between the end of the scale 71 and the lock sleeve 3. When the distance between the scale 71 and the lock sleeve 3 reaches the required distance, then sleeved the lock tongue 4 onto the lock shaft 6 and make the lock tongue 4 fit the end of the scale 71. Then use the two pressure screws 5 to tightly fix the lock tongue 4. Then release the scale 71. The return spring 76 returns to its original state without external force, driving the movement of the moving plate 75, and then can drive the movement of the scale 71 to be retracted into the cavity 72. Then install the entire device on the door body to be used to ensure the connection effect of the entire device with different door bodies. When the entire device needs to be used, first move the push rod 254 along the push groove 253. The movement of the push rod 254 drives the adsorption plate 255 to move into the adsorption groove 252. The movement of the adsorption plate 255 squeezes the connection spring 251 and the strong magnet block 256 on the adsorption plate 255 away from the strong magnet block 256 on the protection disk 21. Then, under the action of the connection rotating shaft 24, drive the protection disk 21 to rotate around the connection rotating shaft 24, so that the protection disk 21 moves away from the fixed ring 22. Then operate the lock port and other components on the boss 1 to drive the lock shaft 6 to rotate inside the lock sleeve 3. The rotation of the lock shaft 6 drives the rotation of the lock tongue 4 to release the connection between the lock tongue 4 and the door body, thereby achieving the purpose of opening the door. Subsequently, use the same method to close the door body. Then, under the action of the connection rotating shaft 24, drive the protection disk 21 to rotate around the connection rotating shaft 24, so that the protection disk 21 fits the fixed ring 22, and release the push rod 254. The connection spring 251 returns to its original state without external force, driving the movement of the adsorption plate 255. The movement of the adsorption plate 255 drives the strong magnet block 256 on the adsorption plate 255 to approach and adsorb and fix with the strong magnet block 256 on the protection disk 21. Use the two strong magnet blocks 256 to perform the adsorption and fixation operation on the protection disk 21 and the fixed ring 22. Under the action of the protection disk 21 and the fixed ring 22, the lock port and other components on the boss 1 can be protected to prevent dust and other impurities in the external environment from falling into the lock port and other components on the boss 1, causing blockage of the lock port and other components on the boss 1, and thus can ensure the use effect of the entire device.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A self-locking cam lock, comprising a boss, characterized in that: A protective component is provided on one side of the boss, and a lock sleeve is connected to the other side of the boss. A lock shaft is connected to the interior of the lock sleeve, and a fixed-length component is provided inside the lock sleeve and on one side of the lock shaft. A lock tongue is sleeved on the outer wall of the lock shaft, and pressure screws are connected on the outer wall of the lock shaft and on both sides of the lock tongue.

2. A self-locking cam lock according to claim 1, characterized in that: The protective assembly includes a protective plate, a fixing ring, a connecting groove, a connecting shaft and an adsorption piece. A fixing ring is connected to one side of the boss, a connecting groove is provided on one side of the fixing ring, a connecting shaft is connected inside the connecting groove, one end of the connecting shaft is connected to the protective plate, and an adsorption piece is provided between the protective plate and the fixing ring.

3. A self-locking cam lock according to claim 2, characterized in that: The adsorption component includes a connecting spring, an adsorption groove, a pushing groove, a pushing rod, an adsorption plate and a strong magnetic block. The adsorption groove is arranged inside the fixed ring, the adsorption plate is arranged inside the adsorption groove, a connecting spring is connected between the adsorption groove and the adsorption plate, one end of the adsorption plate is connected to the pushing rod, a pushing groove is arranged on the side wall of the adsorption groove and at the position corresponding to the pushing rod, and a strong magnetic block is connected to the side where the adsorption plate and the protective plate are close to each other.

4. A self-locking cam lock according to claim 3, characterized in that: One end of the adsorption plate away from the push rod is connected with a guide slide block, and a guide slide groove is arranged on the side wall of the adsorption groove at a position corresponding to the guide slide block.

5. The self-locking cam lock according to claim 1, characterized in that: The fixed-length component includes a scale, a cavity, a movable plate and a reset spring. The cavity is arranged inside the lock sleeve, the movable plate is arranged inside the cavity, the reset spring is connected between the cavity and the movable plate, and the scale is connected to the side of the movable plate away from the reset spring.

6. A self-locking cam lock according to claim 5, characterized in that: The fixed-length component also includes a positioning block and a groove. One end of the scale is connected to the positioning block, a groove is arranged on the side wall of the cavity at a position corresponding to the positioning block, a positioning protrusion is connected to the side wall of the positioning block, and a positioning groove is arranged on the side wall of the groove at a position corresponding to the positioning protrusion.

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