A latch mechanism and a lock

Abstract

The present invention relates to a bolt mechanism and a lock, including a bolt that can move telescopically and is provided with a limiting member thereon; a moving plate, on which a sliding groove is provided, and the sliding groove includes a first groove section that is inclined with respect to the moving direction of the bolt; the limiting member is inserted into the sliding groove to realize the linkage between the bolt and the moving plate; a guiding inclined surface parallel to the first groove section or forming a small included angle with the first groove section is provided on one side surface of the moving plate; an elastic member, one end of the elastic member is connected to the bolt, and the other end abuts against the side surface of the moving plate provided with the guiding inclined surface; wherein, when the moving plate moves to push the bolt to move telescopically, the limiting member moves in the first groove section, and the end of the elastic member abutting against the side surface of the moving plate moves on the guiding inclined surface. During the entire locking and unlocking process, the elastic member will not deform or deform less. Therefore, when the bolt retracts to unlock, only the friction between the bolt and the lock hole needs to be overcome, and no large torque is required to unlock, making the unlocking labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and particularly relates to a lock tongue mechanism and a lock. Background Art

[0002] With the continuous progress of technology, various forms of locks have emerged in modern life, including password locks and fingerprint locks, etc. Among them, a password lock is an electronic product that controls the operation of a circuit or a chip (access control system) through password input, thereby controlling the closing of a mechanical switch to complete the tasks of unlocking and locking. It has many types, including simple circuit products and relatively high-performance products based on chips. The widely used electronic password lock at present is centered around a chip and is realized through programming. In the field of security technology prevention, an electronic password lock with an anti-theft alarm function replaces the traditional mechanical password lock, overcoming the disadvantages of the mechanical password lock such as a small number of passwords and poor security performance, greatly improving the password lock both technically and in terms of performance.

[0003] Generally, a lock has a lock tongue structure, which is composed of a lock tongue, a lock tongue rod, and a lock tongue elastic member, and is installed on a lock box. One end of the lock tongue elastic member is connected to the lock tongue, and the other end abuts against the lock box. By compressing the elastic member to generate elastic force, the lock tongue can automatically extend and retract in the lock box to achieve the opening and closing of the lock. During the unlocking process, the contraction of the lock tongue needs to overcome the elastic force of the lock tongue elastic member and the friction force between the lock tongue and the lock hole, resulting in a relatively large unlocking resistance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a lock tongue mechanism and a lock to overcome the defect of relatively large resistance during unlocking in the existing lock tongue structure in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is: to provide a lock tongue mechanism, including a lock tongue that can be telescopically moved and is provided with a limiting member; a moving plate, on which a sliding groove is provided, and the sliding groove includes a first groove section that is inclined with respect to the moving direction of the lock tongue; the limiting member is inserted into the sliding groove to realize the linkage between the lock tongue and the moving plate; a guiding inclined surface parallel to the first groove section or forming a small-angle included angle with the first groove section is provided on one side surface of the moving plate; an elastic member, one end of which is connected to the lock tongue, and the other end abuts against the side surface of the moving plate provided with the guiding inclined surface; wherein, when the moving plate moves to push the lock tongue to telescopically move, the limiting member moves in the first groove section, and the end of the elastic member abutting against the side surface of the moving plate moves on the guiding inclined surface.

[0006] A further preferred embodiment of the present invention is that the sliding groove further includes a second groove section, which is parallel to the moving direction of the lock tongue and smoothly transitions with one end of the first groove section.

[0007] A further preferred embodiment of the present invention is that the sliding groove further includes a third groove section, which is perpendicular to the moving direction of the lock tongue and smoothly transitions with the other end of the first groove section.

[0008] A further preferred embodiment of the present invention is that the lock tongue is provided with a receiving cavity and a limiting groove penetrating the side wall of the lock tongue and the receiving cavity. The moving plate passes through the limiting groove and can slide in the limiting groove. The elastic member is disposed in the receiving cavity and abuts between the receiving cavity and the side surface of the moving plate provided with the guiding inclined surface.

[0009] A further preferred embodiment of the present invention is that the lock tongue mechanism further includes a tongue seat, and the tongue seat is provided with a tongue cavity with at least one end open and a plate groove penetrating the side wall of the tongue cavity; the lock tongue is disposed in the tongue cavity and can extend out of or retract into the tongue cavity from the opening; the moving plate passes through the plate groove and can slide in the plate groove.

[0010] A further preferred embodiment of the present invention is that one of the tongue cavity and the lock tongue is provided with a guiding protrusion extending along the moving direction of the lock tongue, and the other is provided with a guiding groove slidably adapted to the guiding protrusion.

[0011] A further preferred embodiment of the present invention is that the end of the moving plate located outside the tongue seat is provided with an engaging portion for external power input.

[0012] A further preferred embodiment of the present invention is that the end of the moving plate located outside the tongue seat is provided with a guiding groove for guiding the movement of the moving plate.

[0013] The present invention also provides a lock including the lock tongue mechanism as described above.

[0014] The beneficial effect of the present invention is that when locking, the moving plate moves, the first groove section pushes the limiting member to move, driving the lock tongue to extend, and at the same time the elastic member moves along the guiding inclined surface; when unlocking, the moving plate moves, the first groove section pushes the limiting member to move, driving the lock tongue to contract, and at the same time the elastic member moves along the guiding inclined surface. During the entire locking and unlocking process, when the first groove section pushes the lock tongue to move, the elastic member moves synchronously on the guiding inclined surface. Because the guiding inclined surface is parallel or forms a small angle with the first groove section, the elastic member will not deform or deform less. Therefore, when the lock tongue contracts and unlocks, only the friction between the lock tongue and the lock hole needs to be overcome, and it is not necessary to overcome or less overcome the elastic force of the elastic member, and no large torque is required to unlock, so unlocking is labor-saving. Description of the Drawings

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. In the drawings:

[0016] Figure 1 is a schematic structural view of the tongue locking mechanism of the present invention;

[0017] Figure 2 is another schematic structural view of the tongue locking mechanism of the present invention;

[0018] Figure 3 is a schematic structural view of the moving plate of the present invention;

[0019] Figure 4 is a schematic structural view of the tongue of the present invention;

[0020] Figure 5 is a schematic structural view of the tongue with a tongue seat of the present invention;

[0021] Figure 6 is a schematic structural view of the tongue seat of the present invention. Specific Embodiments

[0022] The preferred embodiments of the present invention will now be described in detail in conjunction with the accompanying drawings.

[0023] Such as Figures 1 to 3As shown in the figure, the bolt mechanism 100 of the present invention includes a bolt 1, a moving plate 2 and an elastic member 3. The bolt 1 can move telescopically, and a limiting member 4 is provided thereon. A chute 21 is provided on the moving plate 2, and the chute 21 includes a first groove section 211 that is inclined relative to the moving direction of the bolt 1. The limiting member 4 is inserted into the chute 21 to realize the linkage between the bolt 1 and the moving plate 2. A guiding inclined surface 22 parallel to the first groove section 211 or forming a small angle with the first groove section 211 is provided on one side surface of the moving plate 2. One end of the elastic member 3 is connected to the bolt 1, and the other end abuts against the side surface of the moving plate 2 provided with the guiding inclined surface 22. Wherein, when the moving plate 2 moves to push the bolt 1 to move telescopically, the limiting member 4 moves in the first groove section 211, and the end of the elastic member 3 abutting against the side surface of the moving plate 2 moves on the guiding inclined surface 22. When locking, the moving plate 2 moves, the first groove section 211 pushes the limiting member 4 to move, driving the bolt 1 to extend, and at the same time the elastic member 3 moves along the guiding inclined surface 22; when unlocking, the moving plate 2 moves, the first groove section 211 pushes the limiting member 4 to move, driving the bolt 1 to contract, and at the same time the elastic member 3 moves along the guiding inclined surface 22. During the entire locking and unlocking process, when the first groove section 211 pushes the bolt 1 to move, the elastic member 3 slides on the guiding inclined surface 22 synchronously. Because the guiding inclined surface 22 is parallel and inclined to the first groove section 211 or forms a small angle with the first groove section 211, the elastic member 3 will not deform or deform less. Therefore, when the bolt 1 contracts and unlocks, only the friction between the bolt 1 and the lock hole needs to be overcome, and there is no need to overcome or less overcome the elastic force of the elastic member 3, and no large torque is required to unlock, and the unlocking is labor-saving.

[0024] It should be noted that the movement of the moving plate 2 can be driven by a motor or by a traditional mechanical structure. The motor drive method is generally applied to electronic locks such as fingerprint locks and password locks, and the mechanical structure drive is generally applied to locks such as traditional mechanical keys.

[0025] As Figure 3 shown, the chute 21 further includes a second groove section 212, and the second groove section 212 is parallel to the moving direction of the bolt 1 and is smoothly transitioned with one end of the first groove section 211. The bolt mechanism 100 of the present invention itself can be locked and unlocked by moving the moving plate 2. In this solution, when it is necessary to lock again after unlocking, the bolt 1 abuts against the door frame and is stressed, the elastic member 3 is compressed, the bolt 1 moves and contracts and drives the limiting member 4 to slide into the second groove section 212. After the bolt 1 is aligned with the lock hole, the bolt 1 is inserted into the lock hole under the action of the elastic member 3, and the elastic member 3 returns to its initial state to complete the locking. Locking by moving the moving plate 2 requires a mechanical key or a motor to drive the moving plate 2. In this solution, the setting of the second groove section 212 can enable locking without moving the moving plate 2, and it is necessary to use a mechanical key or a motor to drive, and the locking is convenient.

[0026] In this embodiment, the inclination direction of the guiding inclined surface 22 is parallel to the inclination direction of the sliding groove 21. Since the guiding inclined surface 22 and the sliding groove 21 are inclined in parallel and have the same inclination angle, during the movement of the moving plate 2, the elastic member 3 will not deform. Therefore, when the locking tongue 1 retracts and unlocks, only the frictional force between the locking tongue 1 and the locking hole needs to be overcome, and the elastic force of the elastic member 3 does not need to be overcome.

[0027] Furthermore, the sliding groove 21 further includes a third groove section 213 which is perpendicular to the moving direction of the locking tongue 1 and is smoothly transitioned with the other end of the first groove section 211. When the locking tongue 1 retracts, due to inertia and other reasons, the moving plate 2 cannot stop moving in time. When it needs to continue moving, the third groove section 213 can play a buffering role to avoid excessive wear between the sliding groove 21 and the limiting member 4, and further damage the moving plate 2.

[0028] As Figure 4 shown, a receiving cavity 11 and a limiting groove 12 penetrating the side wall of the locking tongue 1 are provided on the locking tongue 1. The moving plate 2 passes through the limiting groove 12 and can slide in the limiting groove 12. The elastic member 3 is arranged in the receiving cavity 11 and abuts between the receiving cavity 11 and the side surface of the moving plate 2 provided with the guiding inclined surface 22. The receiving cavity 11 can limit the position of the elastic member 3 to prevent the elastic member 3 from moving left and right, affecting the locking or unlocking effect. Preferably, the elastic member 3 is a spring.

[0029] As Figure 5 and Figure 6 shown, in order to protect the locking tongue mechanism 100, the locking tongue mechanism 100 further includes a tongue seat 5. At least one end of the tongue seat 5 is provided with an opening 51 and a tongue cavity 52 penetrating the side wall of the tongue cavity 52. The locking tongue 1 is arranged in the tongue cavity 52 and can extend out of or retract into the tongue cavity 52 from the opening 51; the moving plate 2 passes through the plate groove 53 and can slide in the plate groove 53.

[0030] As Figure 4 shown, a guiding protrusion extending along the moving direction of the locking tongue 1 is provided on one of the tongue cavity 52 and the locking tongue 1, and a guiding groove 13 slidably adapted to the guiding protrusion is provided on the other. Specifically, a guiding groove 13 is provided on the locking tongue 1, and a guiding protrusion is provided in the tongue cavity 52. Through the cooperation of the guiding protrusion and the guiding groove 13, the moving direction of the locking tongue 1 can be limited to prevent the locking tongue 1 from shifting.

[0031] As Figure 3As shown, one end of the moving plate 2 located outside the tongue seat 5 is provided with an engaging portion 23 for external power input. Correspondingly, the power input may include a gear and a motor. The motor is connected to the gear, and the gear meshes with the engaging portion 23 of the moving plate 2. When unlocking, the motor is turned on to drive the gear to rotate, thereby driving the moving plate 2 to move. As the moving plate 2 moves, the limiting member 4 moves along the first groove section 211, driving the locking tongue 1 to retract. When the locking tongue mechanism 100 of the present invention is provided in other traditional locks without a motor, when unlocking, the key is used to drive the gear to rotate, thereby driving the moving plate 2 to move. Of course, the traditional lock can also drive the moving plate 2 to move through other transmission methods.

[0032] As Figure 3 shown, one end of the moving plate 2 located outside the tongue seat 5 is provided with a guiding groove 24 for guiding the movement of the moving plate. In use, the locking tongue mechanism 100 is installed on the base, and the base may be provided with a guiding member. By arranging the guiding member in the guiding groove 24, the moving plate 2 can be prevented from shifting.

[0033] The present invention also provides a lock including the locking tongue mechanism 100 as described above.

[0034] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A locking tongue mechanism, characterized in that: Comprising, a locking tongue which is telescopically movable and is provided with a limiting member thereon; a moving plate which is provided with a sliding groove, and the sliding groove includes a first groove section which is inclined with respect to the moving direction of the locking tongue; the limiting member is inserted into the sliding groove to realize the linkage between the locking tongue and the moving plate; a guiding inclined surface parallel to the first groove section or forming a small included angle with the first groove section is provided on one side surface of the moving plate; an elastic member, one end of the elastic member is connected to the locking tongue, and the other end abuts against the side surface of the moving plate provided with the guiding inclined surface; wherein when the moving plate moves to push the locking tongue to telescopically move, the limiting member moves in the first groove section, and the end of the elastic member abutting against the side surface of the moving plate moves on the guiding inclined surface; the sliding groove further includes a second groove section which is parallel to the moving direction of the locking tongue and is smoothly transitioned with one end of the first groove section; a receiving cavity and a limiting groove penetrating through the side wall of the locking tongue and communicating with the receiving cavity are provided on the locking tongue, the moving plate passes through the limiting groove and can slide in the limiting groove, and the elastic member is arranged in the receiving cavity and abuts between the receiving cavity and the side surface of the moving plate provided with the guiding inclined surface.

2. The tongue mechanism according to claim 1, wherein: the sliding groove further includes a third groove section which is perpendicular to the moving direction of the locking tongue and is smoothly transitioned with the other end of the first groove section.

3. The tongue mechanism according to any one of claims 1-2, characterized in that: the locking tongue mechanism further includes a tongue base, and at least one end of the tongue base is provided with a tongue cavity and a plate groove penetrating through the side wall of the tongue cavity; the locking tongue is arranged in the tongue cavity and can extend out of or retract into the tongue cavity from the opening; the moving plate passes through the plate groove and can slide in the plate groove.

4. The tongue mechanism according to claim 3, wherein: a guiding protrusion extending along the moving direction of the locking tongue is provided on one of the tongue cavity and the locking tongue, and a guiding groove slidably adapted to the guiding protrusion is provided on the other.

5. The tongue locking mechanism according to claim 3, characterized in that: a meshing portion is provided at one end of the moving plate located outside the tongue base, and the meshing portion is used for external power input.

6. The tongue locking mechanism according to claim 3, characterized in that: a guiding groove is provided at one end of the moving plate located outside the tongue base, and the guiding groove provides guidance for the movement of the moving plate.

7. A lock, characterized in that: Comprising the locking tongue mechanism according to any one of claims 1-6.

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