An electronic cabinet lock

Abstract

The application discloses a kind of electronic cabinet locks in the technical field of cabinet lock, including lock box, stop lever and the hook lever of cooperation with stop lever, the stop lever and hook lever are rotationally connected in lock box, the stop lever includes electromagnetic end and resistance end, lock box is fixed with the electromagnet of cooperation with electromagnetic end;The hook lever includes arc end and operating end, the arc end is equipped with the arc groove of resistance end sliding in circumferential direction, the arc groove is rotationally connected with the limit block that resistance end abuts, the axis of the limit block is towards the center of hook lever, the limit block, stop lever and hook lever are all installed with torsion spring, the arc groove is also fixed with the fixed block that limit block is restricted counterclockwise rotation.This scheme in cabinet lock, when locking, the resistance end of stop lever slides in arc groove, resistance end and hook lever do not occur friction, so as not to make the surface of stop lever and hook lever serious abrasion.

Description

Technical Field

[0001] This invention relates to the field of cabinet lock technology, specifically to an electronic cabinet lock. Background Technology

[0002] Locks are devices that serve a sealing function, including locks, keys, and their accessories. Cabinet locks refer to hardware locks used on metal cabinet doors such as electrical cabinets, filing cabinets, and wardrobes. Electronic cabinet locks are a general term for electronic locks used on the above-mentioned cabinets, and they generally require high-voltage or low-voltage electricity to provide unlocking power. Depending on their electronic sensing methods, they are divided into electronic combination locks, electronic induction locks, etc.

[0003] A typical cabinet lock consists of a latch lever, a stop lever, and an electromagnet. When locking, the latch lever rotates and strikes the stop lever, causing the stop lever to rotate and lock the latch lever. When unlocking, the electromagnet is energized, causing the stop lever to rotate in the opposite direction, disengaging it from the latch lever and thus unlocking the lock. Because the latch lever must strike the stop lever when locking, both the latch lever and the stop lever are subjected to impact forces, which accelerates their damage.

[0004] To address this, another type of cabinet lock has emerged on the market, in which the hook lever and the stop lever are in contact with each other. When locking, the hook lever rotates and gradually squeezes the stop lever, causing the stop lever to lock the hook lever. However, because the hook lever and the stop lever rub against each other, this method will cause severe wear on the surfaces of the stop lever and the hook lever after a period of use, resulting in a shortened lifespan of the electronic cabinet lock. At the same time, it will also cause poor locking effect between the hook lever and the stop lever. Summary of the Invention

[0005] The present invention aims to provide an electronic cabinet lock to solve the problem of shortened service life caused by the mutual friction between the latch lever and the stop lever in the prior art.

[0006] To address the above problems, the present invention provides the following technical solution:

[0007] An electronic cabinet lock includes a lock box, a stop lever, and a hook lever that cooperates with the stop lever. The stop lever and the hook lever are rotatably connected inside the lock box. The stop lever includes an electromagnetic end and a supporting end. An electromagnet that cooperates with the electromagnetic end is fixedly installed in the lock box. The hook lever includes an arc end and an operating end. The arc end has an arc groove along the circumferential direction for the supporting end to slide. A limiting block that abuts against the supporting end is rotatably connected to the arc groove. The axis of the limiting block is oriented toward the center of the hook lever. A torsion spring is installed on the limiting block, the stop lever, and the hook lever. A fixing block that restricts the counterclockwise rotation of the limiting block is also fixedly installed in the arc groove.

[0008] Working principle and beneficial effects of the present invention:

[0009] In this design, the hook lever includes an arc end and an operating end. The arc end has an arc groove along the circumferential direction for the supporting end to slide. When locking, the locking rod is inserted into the lock box. Since both the stop lever and the hook lever are rotatably connected inside the lock box, the locking rod presses the operating end towards the inside of the lock box, causing the hook lever to rotate counterclockwise. The supporting end of the stop lever slides in the arc groove. When the supporting end slides to the limit block, since the limit block is rotatably connected in the arc groove, the supporting end presses the limit block to rotate clockwise. After the supporting end transitions to the right side of the limit block in the arc groove, since the limit block, stop lever, and hook lever are all equipped with torsion springs, the torsion springs on the limit block reset, causing the limit block to spring up. The arc groove is also fixed with a fixing block that restricts the counterclockwise rotation of the limit block. At this time, the fixing block and the limit block abut against each other. After the locking rod is removed, the torsion springs on the hook lever reset, the hook lever rotates clockwise, and drives the limit block to rotate clockwise before abutting against the supporting end, completing the locking process. When unlocking, the electromagnet attracts the electromagnetic end, causing the stop lever to rotate clockwise. The stop lever drives the supporting end to disengage from the arc groove. After the limit block loses the limit of the supporting end, the hook lever continues to rotate clockwise back to the initial position. When the electromagnet no longer attracts the electromagnetic end, the stop lever rotates counterclockwise to make the supporting end return to the arc groove.

[0010] In this design, when the cabinet lock is engaged, the supporting end of the stop lever slides within the arc groove, preventing friction between the supporting end and the latch lever. This prevents severe wear on the surfaces of the stop lever and the latch lever, thus extending the service life of the electronic cabinet lock.

[0011] Furthermore, the lock box is fixedly equipped with limiting posts for limiting the rotation angle of the hook lever and the hook lever respectively. When the cabinet lock is locked, the limiting posts are used to limit the clockwise and counterclockwise rotation angles of the hook lever and the hook lever respectively, so that the lock rod will not be inserted too deeply into the lock box, and at the same time, it will prevent the abutting end from hitting the inner wall of the arc groove and causing damage to the abutting end.

[0012] Furthermore, one end of the supporting end is convex arc-shaped, while the limiting block is concave arc-shaped. This optimization increases the contact area between the limiting block and the supporting end, thereby improving the locking force.

[0013] Furthermore, the spring force coefficient of the torsion spring mounting the limiting block is greater than that of the torsion spring mounting the hook lever. This optimized design results in a faster return speed for the torsion spring mounting the limiting block compared to the torsion spring mounting the hook lever. Firstly, the smaller spring force coefficient of the torsion spring mounting the hook lever means less force is required to push the hook lever through the locking rod. Also, the slower rotation speed of the hook lever when the torsion spring returns prevents significant impact between the limiting block and the supporting end, thus avoiding wear on both. Secondly, the greater spring force coefficient of the torsion spring mounting the limiting block compared to the torsion spring mounting the hook lever results in a faster return speed. This ensures that when the limiting block rotates to the supporting end, it has already returned to its initial position (i.e., the position where the limiting block and the fixing block abut), effectively limiting the movement of the limiting block.

[0014] Furthermore, the limiting block is tilted towards the side away from the supporting end. This arrangement allows for a larger compression angle of the torsion spring mounted on the limiting block, ensuring that when the limiting block rotates to the supporting end, it quickly returns to its initial position (i.e., the position where the limiting block and the fixing block abut).

[0015] Furthermore, the lock box is provided with a lock hole for inserting a lock rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an electronic cabinet lock according to the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure when the middle abutment end transition limit block is in operation;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure when the middle limit block limits the abutment end. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: operating end 1, arc end 2, lock box 3, stop lever 4, electromagnetic end 5, electromagnet 6, arc groove 7, limit block 8, fixing block 9, hook lever 10, and holding end 11.

[0021] In the following statements, directional terms such as "left," "right," "up," and "down" are based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the direction while maintaining their relative positions, it will not affect the implementation of the plan.

[0022] Example: An electronic cabinet lock, such as Figure 1As shown, the device includes a lock box 3, a stop lever 4, and a hook lever 10 that works in conjunction with the stop lever 4. The stop lever 4 and the hook lever 10 are rotatably connected inside the lock box 3. The stop lever 4 includes an electromagnetic end 5 and a supporting end 11. The lock box 3 is fixedly equipped with an electromagnet 6 that works in conjunction with the electromagnetic end 5. The hook lever 10 includes an arc end 2 and an operating end 1. The arc end 2 is provided with an arc groove 7 along the circumferential direction for the supporting end 11 to slide. The arc groove 7 is rotatably connected to a limiting block 8 that abuts against the supporting end 11. The axis of the limiting block 8 is oriented toward the center of the hook lever 10. The limiting block 8, the stop lever 4, and the hook lever 10 are all equipped with torsion springs. The arc groove 7 is also fixedly equipped with a fixing block 9 that restricts the counterclockwise rotation of the limiting block 8.

[0023] like Figure 2 As shown, in this scheme, the hook lever 10 includes an arc end 2 and an operating end 1. The arc end 2 is provided with an arc groove 7 along the circumferential direction for the sliding of the supporting end 11. When locking, the locking rod is inserted into the lock box 3. Since the stop lever 4 and the hook lever 10 are rotatably connected to the lock box 3, the locking rod presses the operating end 1 towards the inside of the lock box 3, causing the hook lever 10 to rotate counterclockwise. The supporting end 11 of the stop lever 4 slides in the arc groove 7. When the supporting end 11 slides to the limiting block 8, since the limiting block 8 is rotatably connected to the arc groove 7, the supporting end 11 presses the limiting block 8 to rotate clockwise. After the supporting end 11 transitions to the right side of the arc groove 7, as shown... Figure 3 As shown, since the limiting block 8, the stop lever 4, and the hook lever 10 are all equipped with torsion springs, when the torsion spring on the limiting block 8 is reset, the limiting block 8 springs up counterclockwise. The arc groove 7 is also fixed with a fixing block 9 that restricts the counterclockwise rotation of the limiting block 8. At this time, the fixing block 9 and the limiting block 8 abut against each other. After the locking rod is removed, the torsion spring on the hook lever 10 is reset, and the hook lever 10 rotates clockwise, causing the limiting block 8 to rotate clockwise and abut against the holding end 11. Restricted by the fixing block 9, the locking is completed. During unlocking, the electromagnet 6 attracts the electromagnetic end 5, causing the stop lever 4 to rotate clockwise. The stop lever 4 causes the holding end 11 to disengage from the arc groove 7. After the limiting block 8 loses the restriction of the holding end 11, the hook lever 10 continues to rotate clockwise back to its initial position. When the electromagnet 6 no longer attracts the electromagnetic end 5, the stop lever 4 rotates counterclockwise, causing the holding end 11 to return to the arc groove 7.

[0024] In this design, when the cabinet lock is locked, the supporting end 11 of the stop lever 4 slides in the arc groove 7, and the supporting end 11 and the hook lever 10 will not rub against each other, thus preventing severe wear on the surfaces of the stop lever 4 and the hook lever 10 and extending the service life of the electronic cabinet lock.

[0025] In this optimized configuration, the spring force coefficient of the torsion spring mounted on the limiting block 8 is greater than that of the torsion spring mounted on the hook lever 10. On one hand, the smaller spring force coefficient of the torsion spring mounted on the hook lever 10 means less force is required to push the hook lever 10 through the locking rod. Furthermore, the slower rotation speed of the hook lever 10 when it returns to its original position prevents significant impact between the limiting block 8 and the supporting end 11, thus avoiding wear on both. On the other hand, the greater spring force coefficient of the torsion spring mounted on the limiting block 8 results in a faster return speed, ensuring that when the limiting block 8 rotates to the supporting end 11, it has already returned to its initial position (i.e., the position where the limiting block 8 and the fixing block 9 abut).

[0026] The optimized design places the limiting block 8 at an angle away from the supporting end 11. This design allows for a larger compression angle of the torsion spring mounted on the limiting block 8, ensuring that when the limiting block 8 rotates to the supporting end 11, it quickly returns to its initial position (i.e., the position where the limiting block 8 and the fixing block 9 abut).

[0027] For those skilled in the art, numerous modifications and improvements can be made without departing from the inventive concept of this invention. These modifications and improvements should also be considered within the scope of protection of this invention, and will not affect the effectiveness of the invention or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An electronic cabinet lock, comprising a lock box, a stop lever, and a hook lever for use with the stop lever, wherein the stop lever and the hook lever are rotatably connected within the lock box, characterized in that: The stop lever includes an electromagnetic end and a supporting end, and the lock box is fixedly equipped with an electromagnet that cooperates with the electromagnetic end; the hook lever includes an arc end and an operating end, the arc end is provided with an arc groove along the circumferential direction for the supporting end to slide, the arc groove is rotatably connected to a limiting block that abuts against the supporting end, the axis of the limiting block is oriented toward the center of the hook lever, the limiting block, the stop lever and the hook lever are all equipped with torsion springs, and the arc groove is also fixedly equipped with a fixing block that restricts the counterclockwise rotation of the limiting block; the elastic coefficient of the torsion spring installed on the limiting block is greater than the elastic coefficient of the torsion spring installed on the hook lever; When locking, the locking rod is inserted into the lock box and the operating end is pressed, which pushes the latch lever to rotate counterclockwise. The holding end slides in the arc groove and pushes the limit block to rotate clockwise and pass through. After the holding end transitions to the right side of the limit block, the limit block is reset counterclockwise under the action of the torsion spring and abuts against the fixed block. After the locking rod is removed, the latch lever is reset clockwise under the action of the torsion spring. The limit block rotates clockwise with the latch lever and abuts against the holding end. Locking is completed under the restriction of the fixed block. When unlocking, the electromagnet attracts the electromagnetic end, driving the stop lever to rotate clockwise. The stop lever causes the holding end to disengage from the arc groove. After the limit block loses its limit at the holding end, the hook lever continues to rotate clockwise under the action of the torsion spring to reset to the initial position. After the electromagnet is de-energized, the stop lever rotates counterclockwise to reset, causing the holding end to re-enter the arc groove.

2. The electronic cabinet lock according to claim 1, characterized in that: The lock box is fixedly equipped with limiting posts for limiting the rotation angle of the hook lever and the hook lever, respectively.

3. The electronic cabinet lock according to claim 2, characterized in that: The abutment end has a convex arc shape, and the limiting block has a concave arc shape.

4. The electronic cabinet lock according to claim 3, characterized in that: The limiting block is tilted toward the side away from the supporting end.

5. The electronic cabinet lock according to any one of claims 1 to 4, characterized in that: The lock box is equipped with a keyhole.

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