Poking wheel resetting structure of door lock

Abstract

The utility model relates to the technical field of lock structures, in particular to a shifting wheel reset structure of a door lock, which comprises a lock shell, a lock bar, a shifting wheel and a linear spring, the lock bar is arranged in the lock shell in an axial movement manner, the shifting wheel is rotatably arranged in the lock shell, one end of the shifting wheel is provided with a shifting rod, and the other end of the shifting wheel is provided with a reset block. The shifting rod movably abuts against one end of the lock bar, the linear spring is arranged at the lower end of the reset block in the axial direction and abuts against the reset block all the time, the shifting wheel is rotated to drive the shifting rod to drive the lock bar to retract into the lock shell, and meanwhile the reset block rotates along with the shifting wheel and presses the linear spring. When the dial wheel rotates, the lock rod can be driven to retract into the lock shell through the dial rod, the linear spring is pressed through the reset block, when the dial wheel is loosened, the dial wheel can be driven to rotate and reset through the elastic restoring force of the linear spring, the acting points of the reset block and the linear spring are evenly distributed, the unbalance loading problem is not prone to occurring, and the structure is reliable.

Description

Technical Field

[0001] This utility model relates to the field of lock structure technology, and in particular to a dial reset structure for a door lock. Background Technology

[0002] The existing door lock dial structure has a relatively simple reset mechanism, which usually uses a torsion spring for reset. The applicant found that such a design has the problem of uneven force distribution, and improper preload during installation can easily lead to uneven load. Utility Model Content

[0003] To achieve the above objectives, this utility model provides a door lock dial reset structure, including a lock housing, a locking lever, a dial, and a linear spring. The locking lever is axially movable within the lock housing, and the dial is rotatably disposed within the lock housing. One end of the dial is provided with a lever, and the other end is provided with a reset block. The lever movably abuts against one end of the locking lever. The linear spring is axially arranged at the lower end of the reset block and always abuts against the reset block. Rotating the dial causes the lever to drive the locking lever to retract the locking lever into the lock housing, while the reset block rotates with the dial and presses against the linear spring.

[0004] In some possible embodiments, the linear spring is a frame structure with one side open, made of a metal wire, with the two ends of the wire bent to form snap holes.

[0005] In some possible embodiments, the lower end of the lock housing is provided with four mounting protrusions, and the linear spring is sleeved on the four mounting protrusions.

[0006] In some possible embodiments, the outer side of the mounting protrusion is formed with an inclined mounting surface.

[0007] In some possible embodiments, the reset block is integrally formed with the dial, and the reset block protrudes from the side of the dial, with the free end of the reset block being arc-shaped.

[0008] In some possible embodiments, the free end of the reset block forms a limiting protrusion located in the inner coil of the frame-shaped linear spring.

[0009] In some possible embodiments, the inner wall of the lock housing also has a protruding positioning pin, and a positioning arc-shaped groove that cooperates with the positioning pin is formed on the side of the dial opposite to the reset block.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The dial reset structure of this utility model has a lever at one end of the dial and a reset block at the other end. A linear spring is installed at the lower end of the reset block. When the dial rotates, the lever can drive the lock to retract into the lock housing, and the reset block presses the linear spring. When the dial is released, the elastic restoring force of the linear spring can drive the dial to rotate back to reset. The force distribution of the reset block and the linear spring is uniform, and it is not easy to have an off-center load problem, so the structure is reliable. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A three-dimensional top view of the locking portion provided in an embodiment of this utility model;

[0013] Figure 2 A cross-sectional structural view of the deadlock portion provided in an embodiment of this utility model;

[0014] Figure 3 A three-dimensional structural diagram of the locking mechanism and dial portion provided for an embodiment of this utility model;

[0015] Figure 4 A three-dimensional bottom view of the lock housing portion provided in an embodiment of this utility model.

[0016] Reference numerals: lock housing 1, mounting protrusion 11, inclined mounting surface 111, positioning pin 12, locking pin 2, dial wheel 3, lever 31, reset block 32, limit protrusion 321, positioning arc groove 33, linear spring 4, buckle hole 41. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1The illustrated door lock dial reset structure includes a lock housing 1, a locking lever 2, a dial 3, and a linear spring 4. The locking lever 2 is axially movable within the lock housing 1, and the dial 3 is rotatably mounted within the lock housing 1. One end of the dial 3 is provided with a lever 31, and the other end is provided with a reset block 32. The lever 31 movably abuts against one end of the locking lever 2. The linear spring 4 is axially arranged at the lower end of the reset block 32 and always abuts against the reset block 32. When the dial 3 is rotated, the lever 31 rotates with the dial 3 and drives the locking lever 2 to retract into the lock housing 1. At the same time, the reset block 32 rotates with the dial 3 and presses against the linear spring 4. When the dial 3 is released, the elastic restoring force of the linear spring 4 acts on the reset block 32 to drive the dial 3 to rotate back to its reset position.

[0019] In some possible embodiments, refer to Figure 3 and Figure 4 As shown, the linear spring 4 is made of a metal wire bent into a frame structure with one side open. The two ends of the metal wire are bent to form buckle holes 41. The lower end of the lock case 1 is provided with four mounting protrusions 11. The linear spring 4 is sleeved on the four mounting protrusions 11. Furthermore, the outer side of the mounting protrusions 11 is formed with an inclined mounting surface 111, which facilitates the installation and positioning of the linear spring 4.

[0020] In some possible embodiments, refer to Figure 2 As shown, the reset block 32 is integrally formed with the dial wheel 3, and the reset block 32 protrudes from the side of the dial wheel 3. The free end of the reset block 32 is arc-shaped, and this arc-shaped free end always abuts against the linear spring 4 to ensure that the force distribution of the reset block 32 and the linear spring 4 is uniform. The free end of the reset block 32 forms a limiting protrusion 321, which is located in the inner ring of the frame-shaped linear spring 4 and plays a role in limiting and guiding.

[0021] In some possible embodiments, refer to Figure 2 and Figure 4 As shown, the inner wall of the lock case 1 also has a protruding positioning pin 12. The side of the dial 3 opposite to the reset block 32 has a positioning arc groove 33 that cooperates with the positioning pin 12. When the dial 3 is reset to a certain angle, the positioning arc groove 33 will be blocked by the positioning pin 12, preventing the lever 31 from disengaging from one end of the lock 2.

[0022] When locking is required, the locking lever 2 is pressed and retracts axially into the lock housing 1. At this time, the lever 31 is movably connected to one end of the locking lever 2, or the locking lever 2 can drive the dial 3 to rotate via the lever 31. A more preferred solution is as follows: Figure 3As shown, one end of the locking lever 2 has a movable waist hole. The free end of the lever 31 is placed inside the movable waist hole. When the dial wheel 3 is rotated, the lever 31 can be driven to press against the far side of the movable waist hole to drive the locking lever 2 back into the lock case 1. When the locking lever 1 is pressed back, the movable waist hole moves relative to the lever 31 but does not act on the lever 31, making the retraction of the locking lever 2 smoother. When the dial wheel 3 is released, the elastic force of the linear spring 4 will push the reset block 32, causing the dial wheel 3 to automatically rotate back to its original position. The locking lever 2 will also reset and extend out of the lock case 1, completing the locking action.

[0023] In summary, the door lock dial reset structure of this utility model realizes the automatic reset function of the dial 3 through the design of the linear spring 4. It is easy to operate. When the dial 3 is released, the elastic restoring force of the linear spring 4 drives the dial 3 to rotate and reset. The force distribution of the reset block 32 and the linear spring 4 is uniform, and it is not easy to have an off-center load problem. The structure is reliable.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A dial reset structure for a door lock, characterized in that, The lock includes a lock housing (1), a locking lever (2), a dial (3), and a linear spring (4). The locking lever (2) is axially movable within the lock housing (1). The dial (3) is rotatably disposed within the lock housing (1). One end of the dial (3) is provided with a lever (31), and the other end is provided with a reset block (32). The lever (31) is movably abutting against one end of the locking lever (2). The linear spring (4) is axially arranged at the lower end of the reset block (32) and always abuts against the reset block (32). Rotating the dial (3) causes the lever (31) to drive the locking lever (2) to retract into the lock housing (1). At the same time, the reset block (32) rotates with the dial (3) and presses against the linear spring (4).

2. The dial reset structure for a door lock according to claim 1, characterized in that, The linear spring (4) is made of a metal wire bent into a frame structure with one side open, and the two ends of the metal wire are bent to form buckle holes (41).

3. The dial reset structure for a door lock according to claim 2, characterized in that, The lower end of the lock housing (1) is provided with four mounting protrusions (11), and the linear spring (4) is sleeved on the four mounting protrusions (11).

4. The dial reset structure for a door lock according to claim 3, characterized in that, An inclined mounting surface (111) is formed on the outer side of the mounting protrusion (11).

5. The dial reset structure for a door lock according to claim 1, characterized in that, The reset block (32) is integrally formed with the dial (3), and the reset block (32) protrudes from the side of the dial (3), with the free end of the reset block (32) being arc-shaped.

6. The dial reset structure for a door lock according to claim 5, characterized in that, The free end of the reset block (32) forms a limiting protrusion (321), which is located in the inner ring of the frame-shaped linear spring (4).

7. The dial reset structure for a door lock according to claim 1, characterized in that, The inner wall of the lock housing (1) also has a protruding positioning pin (12), and the dial (3) has a positioning arc groove (33) that cooperates with the positioning pin (12) on the side opposite to the reset block (32).

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