Door lock bolt

Abstract

The utility model discloses a door lock bolt, which comprises a first lock body, a second lock body and a third lock body, the second lock body is provided with a sliding piece, the sliding piece is provided with a pin shaft, and the sliding piece can slide relative to the second lock body so as to drive the pin shaft to stretch into or retreat from the pin hole; the unlocking piece comprises a first end, a second end and a rotating part, the rotating part is rotatably connected with the second lock body, and the second end can abut against the sliding piece; the distance between the first end and the rotating part is larger than the distance between the second end and the rotating part. In the utility model, the distance from the first end to the rotating part is greater than the distance from the second end to the rotating part, and the length of the power arm is greater than the length of the resisting arm, so that the unlocking piece can form a labor-saving lever to reduce the force required to be applied during unlocking, shorten the time required for unlocking and enable the unlocking to be faster.

Description

Technical Field

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

[0002] As the name implies, a door lock is a device used to lock a door to prevent others from opening it. There are many classifications of door locks, and the requirements for door locks vary in different occasions. Among them, bolt-type door locks are mostly applied to scenarios such as household doors and doors at emergency fire passageways. Such door locks drive a bolt to extend into or withdraw from a bolt hole through a toggling member to lock or unlock the door body.

[0003] However, the existing bolt-type door locks have the following defects: the toggling member needs to be driven manually, and the toggling member is generally fixed to the bolt. The bolt is driven to withdraw from the bolt hole by the translation of the toggling member to achieve unlocking, and the bolt needs to overcome the elastic force of the pre-tightening spring during the translation unlocking process. Therefore, the toggling member usually requires a relatively large force to drive, and it is difficult to unlock quickly, which poses a certain safety hazard in case of emergency. Summary of the Invention

[0004] Aiming at the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a door lock bolt, which is used to solve the problems that the existing bolt-type door locks need to apply a relatively large force during unlocking, resulting in inability to unlock quickly in case of emergency.

[0005] The technical solution adopted by the utility model to solve its technical problems is a door lock bolt, including:

[0006] A first lock body, on which a bolt hole is provided;

[0007] A second lock body, on which a sliding member is provided, and a pin shaft is provided on the sliding member. The sliding member can slide relative to the second lock body to drive the pin shaft to extend into or withdraw from the bolt hole;

[0008] An unlocking member, which has a first end and a second end that are opposite ends, and a rotating part between the first end and the second end. The rotating part is rotatably connected to the second lock body, and the second end can abut against the sliding member; wherein, the distance from the first end to the rotating part is greater than the distance from the second end to the rotating part.

[0009] Further, an installation groove is formed on the second lock body, and the unlocking member is rotatably arranged in the installation groove.

[0010] Further, a first connection hole is formed on the rotating part, and a second connection hole is formed on the side wall of the installation groove;

[0011] A connecting pin is also included, and the connecting hole passes through the first connecting hole and the second connecting hole at the same time.

[0012] Furthermore, the first end extends out of the mounting slot.

[0013] Furthermore, one end of the mounting groove close to the first end is recessed to form a force-applying portion.

[0014] Furthermore, the unlocking member rotates along the first end toward the second lock body to drive the second end to drive the pin shaft to exit the pin hole.

[0015] Furthermore, it also includes an elastic member, which is used to provide a pre-tightening force to make the pin shaft slide along the direction of extending into the pin hole.

[0016] Furthermore, one end of the elastic member is fixedly connected to the sliding member, and the other end of the elastic member is provided with a deformation section, and the deformation section extends into the installation groove and abuts against one end of the installation groove.

[0017] Furthermore, the sliding member can slide relative to the second lock body to drive the deformation section to slide at the end of the installation groove.

[0018] Furthermore, the elastic member is an elastic sheet or a torsion spring.

[0019] Compared with the prior art, the utility model has at least the following beneficial effects:

[0020] The rotating part of the unlocking member is rotatably connected to the second lock body. The first end can be driven to drive the second end to drive the sliding member to slide by toggling the first end. The part between the first end and the rotating part constitutes a power arm, and the part between the second end and the rotating part constitutes a resistance arm. Since the distance from the first end to the rotating part is greater than the distance from the second end to the rotating part, the length of the power arm is greater than the length of the resistance arm, so that the unlocking member can form a labor-saving lever to reduce the force required to be applied when unlocking, shorten the time required for unlocking, and enable faster unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the door lock latch in the embodiment;

[0022] Figure 2 Schematic diagram of the structure of the sliding member and the unlocking member in the embodiment;

[0023] Figure 3 is a schematic structural diagram of a second lock body in the embodiment;

[0024] Figure 4 It is a schematic diagram of the structure of the unlocking member in the embodiment;

[0025] In the figure:

[0026] 100. First lock body; 110. Pin hole;

[0027] 200. Second lock body; 210. Installation groove; 220. Connecting pin; 230. Force application part;

[0028] 300. Sliding member; 310. Pin shaft;

[0029] 400. Unlocking member; 410. First end; 420. Second end; 430. Rotating part;

[0030] 500. Elastic member; 510. Deformation section. Detailed implementation manners

[0031] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0032] Please refer to Figures 1 - 4 , the present invention discloses a door lock bolt, including:

[0033] A first lock body 100, and a pin hole 110 is provided on the first lock body 100;

[0034] A second lock body 200, a sliding member 300 is provided on the second lock body 200, a pin shaft 310 is provided on the sliding member 300, and the sliding member 300 can slide relative to the second lock body 200 to drive the pin shaft 310 to extend into or withdraw from the pin hole 110;

[0035] An unlocking member 400, the unlocking member 400 has a first end 410 and a second end 420 that are opposite ends, and a rotating part 430 between the first end 410 and the second end 420, the rotating part 430 is rotatably connected to the second lock body 200, and the second end 420 can abut against the sliding member 300; wherein, the distance from the first end 410 to the rotating part 430 is greater than the distance from the second end 420 to the rotating part 430.

[0036] Specifically, in this application, a rotatable unlocking member 400 is provided. By rotating the unlocking member 400, the sliding member 300 is driven to move, and then the bolt on the sliding member 300 is driven to extend into or withdraw from the pin hole 110, so as to achieve locking and unlocking.

[0037] Importantly, the rotating part 430 of the unlocking member 400 is rotatably connected to the second lock body 200. By moving the first end 410, the second end 420 can be driven to drive the sliding member 300 to slide. The portion between the first end 410 and the rotating part 430 constitutes a power arm, and the portion between the second end 420 and the rotating part 430 constitutes a resistance arm. Since the distance from the first end 410 to the rotating part 430 is greater than the distance from the second end 420 to the rotating part 430, the length of the power arm is greater than the length of the resistance arm, so that the unlocking member 400 can form a labor-saving lever to reduce the force required to be applied when unlocking, shorten the time required for unlocking, and enable faster unlocking.

[0038] Furthermore, a mounting groove 210 is provided on the second lock body 200 , and the unlocking member 400 is rotatably disposed in the mounting groove 210 .

[0039] Furthermore, a first connection hole is formed on the rotating portion 430, and a second connection hole is formed on the side wall of the mounting groove 210;

[0040] A connecting pin 220 is also included, and the connecting hole passes through the first connecting hole and the second connecting hole at the same time.

[0041] Specifically, a first connection hole is formed on the rotating portion 430, a second connection hole is formed on each of the two side walls of the mounting groove 210, the middle of the connection pin 220 is connected to the first connection hole, and the two second connection holes are respectively connected to the two ends of the connection pin 220. The connection pin 220 can be fixed on the rotating portion 430, and the connection pin 220 can be rotatably arranged in the second connection hole; the two ends of the connection pin 220 can also be fixed on the second connection hole, and the connection pin 220 can be rotatably arranged in the first connection hole; and the connection pin 220 can also be rotatably arranged in both the first connection hole and the second connection hole.

[0042] Further, the first end 410 extends out of the mounting slot 210 .

[0043] Specifically, the first end 410 extends out of the mounting slot 210 so as to apply force to the first end 410 to enable rapid unlocking or locking in an emergency.

[0044] Furthermore, one end of the installation groove 210 close to the first end 410 is recessed to form a force applying portion 230 .

[0045] The surface of the mounting groove 210 around the first end 410 is recessed inward to form a force-applying portion 230, so that in an emergency, one can reach into the inner side of the first end 410 to push the unlocking member 400 outward, or press the first end 410 from the front in an emergency so that the first end 410 and the operator's hand can be accommodated in the force-applying portion 230.

[0046] Further, the unlocking member 400 rotates along the direction of the first end 410 towards the second lock body 200, so as to drive the second end 420 to drive the pin shaft 310 to withdraw from the pin hole 110.

[0047] Specifically, in the case of unlocking in an emergency, if it is necessary to put the hand into the inner side of the unlocking member 400 and dial the unlocking member 400 outwards, the steps are relatively cumbersome, and it is difficult for a person to accurately put the hand into the inner side of the unlocking member 400 when nervous, and it is difficult to unlock quickly in the first time. Therefore, in this application, when pressing the unlocking member 400, the pin shaft 310 is driven to withdraw from the pin hole 110 and unlock. When unlocking, it is only necessary to press the unlocking member 400 directly from the outside inwards. The steps are clear and the operation is convenient, and it can be unlocked quickly even in an emergency state.

[0048] Further, an elastic member 500 is further included, and the elastic member 500 is used to provide a pre-tightening force for the pin shaft 310 to slide along the direction of extending into the pin hole 110.

[0049] By providing the elastic member 500, a pre-tightening force can be provided for the pin shaft 310 to move along the direction towards the pin hole 110, so that the pin shaft 310 can always be in the pin hole 110 under non-external force, improving the locking stability.

[0050] Further, one end of the elastic member 500 is fixedly connected to the sliding member 300, and a deformation section 510 is provided at the other end of the elastic member 500. The deformation section 510 extends into the installation groove 210 and abuts against one end of the installation groove 210.

[0051] Further, the sliding member 300 can slide relative to the second lock body 200 to drive the deformation section 510 to slide at the end of the installation groove 210.

[0052] Further, the elastic member 500 is an elastic sheet or a torsion spring.

[0053] It should be noted that since the elastic force of the elastic member 500 needs to be overcome when unlocking, if a helical spring is directly used, its elastic force will gradually increase with the compression amount, and the elastic force to be overcome will also become larger and larger, which is not conducive to quick unlocking in an emergency, and the elastic force of the helical spring is generally large, which is not conducive to quick unlocking.

[0054] Based on this, in this application, the elastic member 500 is set as a torsion spring or an elastic sheet. During the unlocking process, the deformation section 510 on the elastic member 500 slides at the end of the installation groove 210 and gradually deforms downward, and this deformation is the lateral deformation of the deformation section 510, and the elastic force to be overcome is smaller, and it can be unlocked at a faster speed.

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

[0056] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0057] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A door lock bolt, characterized in that, Comprising: A first lock body, on which a pin hole is provided. A second lock body, on which a sliding member is provided, and a pin shaft is provided on the sliding member. The sliding member can slide relative to the second lock body to drive the pin shaft to extend into or withdraw from the pin hole. An unlocking member, which has a first end and a second end that are opposite ends, and a rotating portion between the first end and the second end. The rotating portion is rotatably connected to the second lock body, and the second end can abut against the sliding member. Wherein, the distance from the first end to the rotating portion is greater than the distance from the second end to the rotating portion.

2. The latch bolt of a door lock according to claim 1, wherein, An installation groove is formed on the second lock body, and the unlocking member is rotatably arranged in the installation groove.

3. The latch bolt of a door lock according to claim 2, characterized in that, A first connection hole is formed on the rotating portion, and a second connection hole is formed on the side wall of the installation groove. It further includes a connection pin, and the connection pin passes through the first connection hole and the second connection hole simultaneously.

4. The latch bolt of a door lock according to claim 2, characterized in that, The first end extends out of the installation groove.

5. A door lock bolt according to claim 2, characterized in that, One end of the installation groove close to the first end is recessed to form a force application portion.

6. A door lock bolt according to claim 1, characterized in that, The unlocking member rotates along the direction of the first end towards the second lock body to drive the second end to drive the pin shaft to withdraw from the pin hole.

7. A door lock bolt according to claim 2, characterized in that, It further includes an elastic member, and the elastic member is used to provide a pre-tightening force for the pin shaft to slide along the direction of extending into the pin hole.

8. A door lock bolt according to claim 7, characterized in that, One end of the elastic member is fixedly connected to the sliding member, and a deformation section is provided at the other end of the elastic member. The deformation section extends into the installation groove and abuts against one end of the installation groove.

9. A door lock bolt according to claim 8, characterized in that, The sliding member can slide relative to the second lock body to drive the deformation section to slide at the end of the installation groove.

10. A door lock bolt according to claim 8, characterized in that, The elastic member is an elastic sheet or a torsion spring.

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