Door lock

Abstract

The utility model discloses a door lock which comprises a lock body, a lock tongue is arranged in the lock body in a sliding mode, and the lock tongue can stretch out of the lock body or retreat into the lock body to lock or unlock the lock body. The transmission part is provided with a guide groove, the guide groove is provided with a first guide section and a second guide section which are connected with each other, and the joint of the first guide section and the second guide section is provided with an initial position; and the trigger piece is rotatably connected with the lock body, a guide column is arranged on the trigger piece, and the trigger piece is rotated to drive the guide column to slide along the first guide section or the second guide section from the initial position so as to drive the spring bolt to stretch out of or retract back to the lock body. According to the utility model, unlocking or locking can be realized by rotating the triggering piece in any direction, and the door can be quickly opened or closed in emergency.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a door lock. Background Art

[0002] A door lock is a lock installed on a door for locking and unlocking the door. Some door locks are unlocked or locked by rotating a trigger to drive the lock tongue to slide.

[0003] However, for the above door lock, when the door lock is locked and needs to be unlocked, the trigger can only move in one direction to drive the lock tongue to retract, thereby unlocking. That is, the trigger can only rotate in one direction. When the situation is urgent and the user is using it for the first time, it is impossible to determine which direction to pull the trigger to unlock or lock, and the door cannot be opened or closed quickly in an emergency. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a door lock for solving the problem that the trigger member in the prior art has only one correct unlocking (locking) direction, resulting in the inability to quickly open (close the door) in an emergency situation.

[0005] The technical solution adopted by the utility model to solve the technical problem is a door lock, comprising:

[0006] A lock body, wherein a lock tongue is slidably disposed in the lock body, and the lock tongue can extend out of the lock body or retract into the lock body to lock or unlock;

[0007] a transmission member, which is fixedly connected to the lock tongue, and the transmission member can slide relative to the lock body to drive the lock tongue to extend out of the lock body or retract into the lock body; the transmission member is provided with a guide groove, and the guide groove has a first guide section and a second guide section connected to each other, and the connection between the first guide section and the second guide section has an initial position;

[0008] A trigger member is rotatably connected to the lock body, and a guide column is provided on the trigger member. The trigger member is rotated to drive the guide column to slide from the initial position along the first guide section or the second guide section to drive the lock tongue to extend or retract to the lock body.

[0009] Furthermore, the first guide section and the second guide section are gradually inclined inwardly along the sliding direction of the lock tongue extending out of the lock body.

[0010] Further, the initial position is at the lowest point of the guide groove.

[0011] Furthermore, the guide groove is arranged in a V shape.

[0012] Furthermore, the peripheral wall of the trigger member is recessed inwardly to form a plurality of limiting grooves;

[0013] A limiting spring piece is also provided in the lock body, and the limiting spring piece protrudes outward to form a limiting protrusion;

[0014] Rotating the trigger member can cause the limiting protrusion to extend into any of the limiting grooves.

[0015] Furthermore, a first limiting groove, a second limiting groove and a third limiting groove are sequentially arranged on the peripheral wall of the trigger member; when the guide column is in the initial position, the limiting protrusion extends into the second limiting groove; when the guide column is in the end of the first guide section away from the initial position, the limiting protrusion extends into the first limiting groove; when the guide column is in the end of the second guide section away from the initial position, the limiting protrusion extends into the third limiting groove.

[0016] Furthermore, a return spring for providing a pre-tightening force is also provided between the lock body and the transmission member bracket.

[0017] Furthermore, a limiting member is provided between the transmission member and an end away from the locking tongue, and the limiting member can abut against the transmission member to limit the transmission member from sliding inwards.

[0018] Further, the lock body comprises a first shell and a second shell, the first shell is installed inside the door, and the second shell is installed outside the door;

[0019] The transmission member and the trigger member are both arranged in the first housing.

[0020] Furthermore, a lock core is provided in the second housing, and the lock core can pass through the door and be connected to the trigger member.

[0021] Compared with the prior art, the utility model has at least the following beneficial effects:

[0022] A guide groove is provided on the transmission member, and the guide groove is divided into a first guide section and a second guide section. When the trigger member is rotated, the guide column can be driven to slide along the first guide section or the second guide section from the initial position, and then the transmission member drives the lock tongue to slide to achieve unlocking or locking. When the trigger member rotates clockwise, the guide column slides in the first guide section from the initial position, drives the transmission member to move downward, and drives the lock tongue to slide to achieve unlocking or locking; when the trigger member rotates counterclockwise, the guide column slides in the second guide section from the initial position, drives the transmission member to move downward, and drives the lock tongue to slide to achieve unlocking or locking. That is to say, when the guide column is in the initial position, no matter whether the trigger member rotates clockwise or counterclockwise, it can drive the transmission member to connect the lock tongue to rotate in the same direction to achieve unlocking or locking. In this way, the door lock can be unlocked or locked in both directions, and the trigger member can be unlocked or locked when it rotates in any direction, so that the door can be opened or closed quickly in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the door lock in the embodiment;

[0024] Figure 2 This is a schematic diagram of the structure inside the first shell in the embodiment;

[0025] Figure 3 It is a structural schematic diagram of a transmission member in an embodiment;

[0026] Figure 4 It is a structural schematic diagram of a trigger member in an embodiment;

[0027] Figure 5 It is a schematic diagram of the structure of the limiting spring piece in the embodiment;

[0028] In the figure:

[0029] 100, first housing; 110, trigger member; 111, first limiting groove; 112, second limiting groove; 113, third limiting groove; 114, guide column; 120, transmission member; 121, first guide section; 122, second guide section; 123, initial position; 130, lock tongue; 140, return spring; 150, limiting member; 160, limiting spring; 161, limiting protrusion;

[0030] 200. Second housing; 210. Lock core. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] Please refer to Figure 1-Figure 5 The utility model discloses a door lock, comprising:

[0033] A lock body, in which a lock tongue 130 is slidably disposed, and the lock tongue 130 can extend out of the lock body or retract into the lock body to lock or unlock;

[0034] A transmission member 120 is fixedly connected to the lock tongue 130. The transmission member 120 can slide relative to the lock body to drive the lock tongue 130 to extend out of the lock body or retract into the lock body. The transmission member 120 is provided with a guide groove, and the guide groove has a first guide section 121 and a second guide section 122 connected to each other. The connection between the first guide section 121 and the second guide section 122 has an initial position 123.

[0035] The trigger member 110 is rotatably connected to the lock body. A guide column 114 is provided on the trigger member 110. The trigger member 110 is rotated to drive the guide column 114 to slide from the initial position 123 along the first guide section 121 or the second guide section 122 to drive the lock tongue 130 to extend or retract to the lock body.

[0036] In the present application, a guide groove is set on the transmission member 120, and the guide groove is divided into a first guide section 121 and a second guide section 122. When the trigger member 110 is rotated, it can drive the guide column 114 to slide along the first guide section 121 or the second guide section 122 from the initial position 123, thereby driving the transmission member 120 to drive the lock tongue 130 to slide to achieve unlocking or locking.

[0037] Specifically, when the trigger 110 rotates clockwise, the guide column 114 slides from the initial position 123 in the first guide section 121, driving the transmission member 120 to move downward, and driving the lock tongue 130 to slide to unlock or lock; when the trigger 110 rotates counterclockwise, the guide column 114 slides from the initial position 123 in the second guide section 122, driving the transmission member 120 to move downward, and driving the lock tongue 130 to slide to unlock or lock. In other words, when the guide column 114 is in the initial position 123, no matter whether the trigger 110 rotates clockwise or counterclockwise, it can drive the transmission member 120 to communicate with the lock tongue 130 to rotate in the same direction to unlock or lock. In this way, the door lock can be unlocked or locked in both directions, and the trigger 110 can be unlocked or locked when rotating in any direction, so that the door can be opened or closed quickly in an emergency.

[0038] Furthermore, the first guide section 121 and the second guide section 122 are gradually inclined inwardly along the sliding direction of the lock tongue 130 extending out of the lock body.

[0039] The initial position 123 is located at the lowest point of the guide groove.

[0040] The guide groove is arranged in a V shape.

[0041] Specifically, the movement trajectory of the guide section is a semicircular arc, and the guide groove is located on the inner side of the arc. When the guide column 114 starts to move to the left or right (i.e., the first guide section 121 or the second guide section 122) from the lowest point of the arc (i.e., the initial position 123), the guide column 114 can rest against the side wall of the guide groove and drive the transmission member 120 to move downward, and drive the lock tongue 130 to extend out of the lock body to achieve quick locking.

[0042] Of course, if two-way unlocking is to be achieved, it is only necessary to set the guide groove on the outside of the arc. When the guide column 114 starts to move to the left or right (i.e. the first guide section 121 or the second guide section 122) from the lowest point of the arc (i.e. the initial position 123), the guide column 114 can rest against the side wall of the guide groove and drive the transmission member 120 to move upward, and drive the lock tongue 130 back to the lock body to achieve quick unlocking.

[0043] Thus, bidirectional quick unlocking or locking is achieved through the design of the guide groove.

[0044] Furthermore, the peripheral wall of the trigger member 110 is recessed inward to form a plurality of limiting grooves;

[0045] A limiting spring piece 160 is further provided in the lock body, and the limiting spring piece 160 protrudes outward to form a limiting protrusion 161;

[0046] Rotating the trigger member 110 can cause the limiting protrusion 161 to extend into any of the limiting grooves.

[0047] Furthermore, a first limiting groove 111, a second limiting groove 112 and a third limiting groove 113 are sequentially arranged on the peripheral wall of the trigger member 110; when the guide column 114 is in the initial position 123, the limiting protrusion 161 extends into the second limiting groove 112; when the guide column 114 is in the end of the first guide section 121 away from the initial position 123, the limiting protrusion 161 extends into the first limiting groove 111; when the guide column 114 is in the end of the second guide section 122 away from the initial position 123, the limiting protrusion 161 extends into the third limiting groove 113.

[0048] Specifically, the limiting protrusion 161 and the limiting groove are provided to lock several positions of the trigger member 110, namely, the guide column 114 is at the initial position 123, the end of the first guide section 121 away from the initial position 123, and the end of the second guide section 122 away from the initial position 123. These positions correspond to the unlocking position and the locking position of the lock, respectively.

[0049] Furthermore, a return spring 140 for providing a pre-tightening force is also provided between the lock body and the transmission member 120 bracket.

[0050] Furthermore, a limiting member 150 is provided at one end of the transmission member 120 away from the locking tongue 130 , and the limiting member 150 can abut against the transmission member 120 to limit the transmission member 120 from sliding inwards.

[0051] Furthermore, the lock body includes a first shell 100 and a second shell 200, the first shell 100 is installed inside the door, and the second shell 200 is installed outside the door;

[0052] The transmission member 120 and the trigger member 110 are both disposed in the first housing 100 .

[0053] Furthermore, a lock core 210 is disposed in the second housing 200 , and the lock core 210 can pass through the door and be connected to the trigger member 110 .

[0054] Two housings are provided, which are installed outside the door and inside the door respectively. When outside the door, a key needs to be inserted into the lock cylinder 210 to unlock or lock the door; when inside the door, only the trigger member 110 needs to be turned without using a key.

[0055] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A door lock, characterized in that: include: A lock body, wherein a lock tongue is slidably disposed in the lock body, and the lock tongue can extend out of the lock body or retract into the lock body to lock or unlock; a transmission member, which is fixedly connected to the lock tongue, and the transmission member can slide relative to the lock body to drive the lock tongue to extend out of the lock body or retract into the lock body; the transmission member is provided with a guide groove, and the guide groove has a first guide section and a second guide section connected to each other, and the connection between the first guide section and the second guide section has an initial position; A trigger member is rotatably connected to the lock body, and a guide column is provided on the trigger member. The trigger member is rotated to drive the guide column to slide from the initial position along the first guide section or the second guide section to drive the lock tongue to extend or retract to the lock body.

2. A door lock according to claim 1, characterized in that: The first guide section and the second guide section are gradually inclined inwardly along the sliding direction in which the lock tongue extends out of the lock body.

3. A door lock according to claim 2, characterized in that: The initial position is at the lowest point of the guide groove.

4. A door lock according to claim 3, characterized in that: The guide groove is arranged in a V shape.

5. A door lock according to claim 1, characterized in that: The peripheral wall of the trigger member is recessed inwardly to form a plurality of limiting grooves; A limiting spring piece is also provided in the lock body, and the limiting spring piece protrudes outward to form a limiting protrusion; Rotating the trigger member can cause the limiting protrusion to extend into any of the limiting grooves.

6. A door lock according to claim 5, characterized in that: A first limiting groove, a second limiting groove and a third limiting groove are sequentially arranged on the peripheral wall of the trigger member; when the guide column is in the initial position, the limiting protrusion extends into the second limiting groove; when the guide column is in the end of the first guide section away from the initial position, the limiting protrusion extends into the first limiting groove; when the guide column is in the end of the second guide section away from the initial position, the limiting protrusion extends into the third limiting groove.

7. A door lock according to claim 1, characterized in that: A return spring for providing pre-tightening force is also provided between the lock body and the transmission member bracket.

8. A door lock according to claim 1, characterized in that: A limiting member is also provided between the transmission member and an end away from the locking tongue, and the limiting member can abut against the transmission member to limit the transmission member from sliding inwards.

9. A door lock according to claim 1, characterized in that: The lock body comprises a first shell and a second shell, the first shell is installed inside the door, and the second shell is installed outside the door; The transmission member and the trigger member are both arranged in the first housing.

10. A door lock according to claim 9, characterized in that: A lock core is also arranged in the second housing, and the lock core can pass through the door and is connected to the triggering member.

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