A lock

Abstract

The application discloses a lock, which comprises a body, a pair of rotatable clamping claws arranged in the body, one end of the clamping claws capable of hooking a lock hook, a torsion spring arranged between the clamping claws and the body and capable of making the one end of the clamping claws outwardly expand, a sliding block capable of being located between the clamping claws, two side surfaces of the sliding block provided with inclined surfaces capable of cooperating with the other end of the clamping claws, and a spring arranged between the sliding block and the body; further comprising a stop block, a step surface arranged on the sliding block, the stop block capable of abutting and cooperating with the step surface when the lock is in a closed state; and a motor and a lever capable of driving the stop block to move, so that the lock can be opened in mechanical and electronic modes and violent opening of the lock can be prevented.

Description

Technical Field

[0001] This invention relates to a lock, and more specifically to a concealed electronic lock for vending machine lockers, shared equipment lockers, automobiles, and other fields, involving tensile unlocking technology and anti-violent technology. Background Technology

[0002] This is mainly for items stored inside parcel lockers. Locks are typically engaged by latching a hook. When the locker is in use, especially when items expand, they exert an outward force on the door. Under this outward pulling force, the central locking system may fail to unlock. Small electromagnetic locks may also become jammed and unable to open under certain pulling force. Furthermore, applying a large pulling force may cause the lock to open, making it easy for the locker door to be opened and potentially leading to the loss of items inside. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a lock that can solve the problems of being unable to open the lock due to tensile force and being unable to open the lock by force.

[0004] This invention is achieved through the following technical solution:

[0005] A lock includes a body containing a pair of rotatable claws, one end of which can hook a lock hook. A torsion spring is provided between the claws and the body to allow one end of the claw to extend outward. The lock also includes a slider positioned between the two claws, with inclined surfaces on both sides of the slider engaging with the other end of the claw. A spring is provided between the slider and the body. Furthermore, the lock includes a stop block with a stepped surface on the slider. When the lock is locked, the stop block abuts against the stepped surface. Finally, the lock includes a motor and a lever for driving the stop block.

[0006] In this embodiment of the invention, one end of the lever can be connected to the stop block, the other end of the lever can extend out of the body, the lever can rotate relative to the body, and a reset member is provided between the lever and the body so that the lever can move synchronously with the stop block.

[0007] In this embodiment of the invention, the main body is provided with two stops located on both sides of the slider; it also includes a first movable block and a second movable block, and a first linkage is provided between the first movable block and the second movable block. The first linkage can cause the first movable block and the second movable block to move in opposite directions. The first movable block can be connected with a stop, and the second movable block can be connected with another stop. The motor can drive the first movable block to move, and the lever can drive the second movable block to move.

[0008] In this embodiment of the invention, a second linkage is also included, wherein the motor can be connected to the first movable block via the second linkage; the first linkage and the second linkage include a turntable and a locking block disposed on the periphery of the turntable, and both the first movable block and the second movable block are provided with locking slots, wherein the two locking blocks on the first linkage can be locked into the locking slots, so that when the first linkage rotates, it drives the first movable block and the second movable block to move in opposite directions; the first movable block and / or the second movable block are provided with elongated slots, and the locking blocks on the second linkage can extend into the elongated slots.

[0009] In this embodiment of the invention, both the first movable block and the second movable block are provided with tongues, and the stop block is provided with an opening. The tongues can be inserted into the openings to enable the first movable block and the second movable block to drive the stop block to move.

[0010] In this embodiment of the invention, a fixed seat is provided inside the main body, a stop block is provided on each side of the fixed seat, and a return spring is provided between the stop block and the fixed seat.

[0011] In this embodiment of the invention, the other end of the pawl is kept in contact with the side walls of the slider under the action of the torsion spring; the slider includes a first section, a second section and a third section arranged from top to bottom, the inclined surface is arranged on the side of the second section, the width of the first section is greater than the width of the third section, when the other end of the pawl engages with the first section, the lock is in the locked state, and when the other end of the pawl engages with the third section, the lock is in the unlocked state.

[0012] In this embodiment of the invention, the stepped surface is located below the third segment, a first guide surface is provided on the slider located below the stepped surface, and a second guide surface is provided above the stop block. The first guide surface can cooperate and connect with the second guide surface.

[0013] In this embodiment of the invention, a roller is provided at the other end of the claw, the roller can contact and cooperate with the two side walls of the slider, and the middle part of the claw is connected to the body via a cylindrical pin.

[0014] In this embodiment of the invention, a spring is sleeved around the outer periphery of the slider located below the first guide surface, and the other end of the spring acts on the body.

[0015] The lock of the present invention has the following advantages: the lock can still be unlocked when the cabinet door is subjected to a certain pulling force and when the central unlocking fails to unlock it, and at the same time it can solve the problem of forced lock picking and improve security. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the locked state in this invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the locked state in this invention. Figure 2 .

[0019] Figure 3 This is a schematic diagram of the unlocked state in this invention. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the unlocked state in this invention. Figure 2 .

[0021] Figure 5 This is a schematic diagram of the motor unlocking process in this invention.

[0022] Figure 6 This is a schematic diagram of the lever unlocking method in this invention.

[0023] Figure 7 This is an exploded view of the present invention.

[0024] Figure 8 This is a schematic diagram of the slider's engagement in this invention.

[0025] Figure 9 This is a schematic diagram of the first linkage (or the second linkage) in this invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Referring to the accompanying drawings, a lock includes a body 100, within which a pair of rotatable claws 10 are disposed. One end of each claw can hook a lock hook 110, which is ring-shaped. When the claws are hooked, the lock is in a locked state; when not hooked, it is in an unlocked state. A torsion spring 11 is provided between the claws and the body to allow one end of the claw to extend outward. The claw can be an arc-shaped block. The lock also includes a slider 20, which can be located between the two claws. The slider has inclined surfaces 21 on both sides that can engage with the other end of the claws. A spring 22 is provided between the slider and the body. The lock also includes a stop block 30, on which a stepped surface 23 is provided. When the lock is locked, the stop block abuts against the stepped surface. The lock also includes a motor 40 and a lever 50 that can drive the stop block to move. Both the motor and the lever can achieve the unlocking function without interfering with each other.

[0032] Preferably, one end of the lever 50 can be connected to the stop block, and the other end of the lever can extend out of the body. The lever can rotate relative to the body. A reset member 51 is provided between the lever and the body. The reset member can also be a torsion spring so that the lever can move synchronously with the stop block. The lever can drive the stop block to move laterally by driving the tongue of the second movable block.

[0033] Furthermore, the main body is provided with two stops located on both sides of the slider; it also includes a first movable block 61 and a second movable block 62, with a first linkage 71 between the first movable block and the second movable block. The first linkage can cause the first movable block and the second movable block to move in opposite directions, and can also enable the two movable blocks to move simultaneously. The first movable block can be connected with a stop block, and the second movable block can be connected with another stop block. The motor can drive the first movable block to move, and the lever can drive the second movable block to move. When the motor drives, the lever does not rotate, and when the lever drives, the motor does not rotate. It also includes a second linkage 72, through which the motor can be connected to the first movable block; the first and second linkages include a turntable 73 and a locking block 74 disposed on the periphery of the turntable, and both the first and second movable blocks are provided with a slot 63, and the two locking blocks on the first linkage can be locked into the slot, so that when the first linkage rotates, it drives the first and second movable blocks to move in opposite directions; the first and / or the second movable blocks are provided with a long slot 64, and the locking block on the second linkage can extend into the long slot. Because it is a long slot, when the lever drives the movable block to move, the second linkage and the motor do not rotate, but under the action of the slot, the first and second movable blocks can be linked.

[0034] Furthermore, both the first and second movable blocks are provided with tongues 65, and the stop block is provided with an opening 31. The tongues can be inserted into the openings to enable the first and second movable blocks to drive the stop block to move.

[0035] Preferably, a fixed seat 32 is provided in the body, and a stop block is provided on each side of the fixed seat. A return spring 33 is provided between the stop block and the fixed seat, so that the stop block can move towards the step surface and remain in a locked state, thereby maintaining the locked state.

[0036] Furthermore, the other end of the pawl maintains contact with the side walls of the slider under the action of a torsion spring. The slider includes a first section 24, a second section 25, and a third section 26 arranged from top to bottom. The inclined surface is located beside the second section. The width of the first section is greater than the width of the third section. When the other end of the pawl engages with the first section, the lock is in a locked state. When the other end of the pawl engages with the third section, the lock is in an unlocked state. The stepped surface is located below the third section. A first guide surface 27 is provided on the slider located below the stepped surface. A second guide surface 34 is provided above the stop. The first guide surface can engage with the second guide surface to facilitate the smooth opening of the stop when locking. A roller 12 is provided at the other end of the pawl. The roller can engage with the side walls of the slider to reduce friction and noise. The middle part of the pawl is connected to the body via a cylindrical pin 13. A spring is fitted around the outer periphery of the slider located below the first guide surface. The other end of the spring acts on the body, causing the slider to move upward to unlock when the stop block separates. At the same time, the slider can be locked by pushing it downward through the locking hook.

[0037] In this invention, a motor drives a second linkage component, which in turn moves two movable blocks to open to the sides. These two movable blocks then pull apart two stop blocks, freeing the middle slider from its restraints. A torsion spring on the pawl continuously applies an opening force to one end (the upper end). When the slider rises a certain height, the pawl opens due to the slider's inclined surface, separating it from the latch and unlocking the device. Mechanical unlocking is achieved by pulling the lever, which slides the second movable block to the right, causing the first movable block to move to the left due to the central linkage component. This, without interfering with the motor's second linkage component, moves both movable blocks and stop blocks, unlocking the device and ensuring that mechanical and electronic unlocking operate independently. When the motor reverses periodically or the mechanical lever is released, the stop blocks return to their original positions due to spring resetting. Pressing the lock hook then pushes the slider down, locking the device. In the locked state, the slider is restrained by the stop blocks, maintaining the locked state. Unlocked State: The slider is not restricted by the stop block and is pushed upward by the spring, thus unlocking. The opening and closing of the chuck is mainly controlled by a combination of straight and inclined surfaces. In the locked state, the chuck is subjected to force on the first straight surface, forcibly pulling the lock hook. All the force acts on the slider, preventing unlocking due to pulling force. A roller is located at the other end (lower end) of the chuck. The roller and slider experience rolling friction, which significantly reduces friction and allows for better force dissipation when pulling a 20KG force. Simultaneously, by adding a first linkage, motor-driven and mechanical unlocking can operate on the same mechanism. When the motor unlocks, the first and second movable blocks move in opposite directions simultaneously, and the first linkage rotates accordingly. When the mechanical unlocks, the motor outlet remains locked in conjunction with the second linkage. The force of the lever acts on the second movable block, causing the first movable block to move in the opposite direction synchronously due to the first linkage, while the second linkage and the motor do not rotate. Furthermore, the two stops prevent the lock from being unlocked by knocking. When knocking from the left, the left side may be knocked open, but the right side will not be knocked open; when knocking from the right, the right side may be knocked open, but the left side will not be knocked open, thus maintaining the security of the lock.

[0038] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A lock comprising a body, characterised in that, The body is provided with a pair of rotatable clamping jaws, one end of the clamping jaws can hook the lock hook, the clamping jaws and the body are provided with torsion springs which can make the one end of the clamping jaws outwardly expand, further comprising a sliding block, the sliding block can be located between the two clamping jaws, the two sides of the sliding block are provided with inclined surfaces which can cooperate with the other end of the clamping jaws, the sliding block and the body are provided with springs; further comprising a stop block, the sliding block is provided with a stepped surface, when the lock is in the closed state, the stop block is in abutting cooperation with the stepped surface; further comprising a motor and a lever which can drive the stop block to move; the body is provided with two stop blocks, the two stop blocks are located on the two sides of the sliding block; further comprising a first movable block and a second movable block, the first movable block and the second movable block are provided with a first linkage, the first linkage can make the first movable block and the second movable block move in opposite directions, the first movable block can be connected with one stop block, the second movable block can be connected with the other stop block, the motor can drive the first movable block to move, the lever can drive the second movable block to move; further comprising a second linkage, the motor can be connected with the first movable block through the second linkage; the first linkage and the second linkage comprise a rotating disc and clamping blocks arranged on the circumferential side of the rotating disc, the first movable block and the second movable block are both provided with clamping grooves, the two clamping blocks on the first linkage can be clamped into the clamping grooves, so that when the first linkage rotates, the first movable block and the second movable block are driven to move in opposite directions; the first movable block and / or the second movable block are provided with a long slot, the clamping blocks on the second linkage can extend into the long slot.

2. A lock as claimed in claim 1, wherein One end of the lever can be connected with the stop block, the other end of the lever can extend out of the body, the lever can rotate relative to the body, the lever and the body are provided with a reset member, so that the lever can move synchronously with the stop block.

3. The lock of claim 1, wherein The first movable block and the second movable block are both provided with tongues, the stop block is provided with an opening, the tongues can be inserted into the opening, so as to realize the movement of the first movable block and the second movable block driving the stop block.

4. A lock as claimed in claim 3, wherein The body is provided with a fixed seat, one stop block is arranged on each side of the fixed seat, the stop block and the fixed seat are provided with a reset spring.

5. A lock according to any one of claims 1-4, characterized in that The other end of the clamping jaw keeps in contact with the two side walls of the sliding block under the action of the torsion spring; the sliding block comprises a first section, a second section and a third section arranged from top to bottom, the inclined surface is arranged on the side of the second section, the width of the first section is greater than the width of the third section, when the other end of the clamping jaw cooperates with the first section, the lock is in the closed state, when the other end of the clamping jaw cooperates with the third section, the lock is in the open state.

6. A lock as claimed in claim 5, wherein The stepped surface is arranged below the third section, the sliding block below the stepped surface is provided with a first guide surface, the top of the stop block is provided with a second guide surface, the first guide surface can be connected with the second guide surface.

7. A lock as claimed in claim 6, wherein The other end of the clamping jaw is provided with a roller, the roller can be in contact with the two side walls of the sliding block, the middle part of the clamping jaw is connected with the body through a cylindrical pin.

8. A lock as claimed in claim 7, wherein The sliding block below the first guide surface is provided with a spring on the outer periphery, the other end of the spring acts on the body.

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