Back locking mechanism of door lock

Abstract

The utility model discloses a back locking mechanism of a door lock, which comprises a rotationally arranged locking block, and further comprises an abutting block which can be movably arranged close to or far away from the locking block and is provided with an abutting part matched with the locking block in an abutting or separating way, and a matching surface is arranged on the abutting block; the operating block can be movably arranged close to or away from the abutting block, a locking part and an abutting surface which is in inclined plane fit with the matching surface are arranged on the operating block, and the locking part realizes locking action on a moving path, close to the abutting block, of the operating block; and the locking block can be rotationally arranged close to or far away from the operating block, a matching part is arranged on the locking block, and the matching part and the locking part form locking or separation matching acting in the direction perpendicular to the moving direction of the operating block along the matching part. According to the utility model, the structure design is reasonable, the unlocking sheet, the operating block, the locking block and the abutting block are arranged, the operating block is shifted for locking, and the locking block is pressed for unlocking, so that the locking and unlocking actions of the locking block can be completed.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, and more specifically to an anti-locking mechanism of a door lock. Background Art

[0002] The existing door lock is provided with a push-to-unlock block on both the inner and outer sides of the door leaf, and a reverse lock key is provided on the inner side of the door leaf. The reverse lock key is exposed on the surface of the door leaf, which is not only unsightly, but also poses a certain safety hazard to the human body or clothing. Therefore, how to improve the reverse lock mechanism of the door lock has become the direction of our thinking. Summary of the invention

[0003] The utility model overcomes the shortcomings of the prior art and provides an anti-locking mechanism for a door lock. The structure is reasonably designed. An unlocking piece, an operating block, a locking block and an abutting block are arranged. The operating block is locked by turning it and the locking block is unlocked by pressing it, so that the locking and unlocking actions of the lock block can be completed.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A door lock anti-locking mechanism comprises a lock housing and further comprises:

[0006] A lock block, which is rotatably mounted on the lock housing and can be extended or retracted relative to the lock housing;

[0007] An abutment block is slidably disposed in the lock housing and can move closer to or farther from the lock block, and is connected to an abutment reset member that causes it to slide and reset. The abutment block is provided with an abutment portion that can abut against the lock block, and the abutment portion can push the lock block to retract into the lock housing. When the lock block is not pushed by the abutment portion, it is in a state of extending out of the lock housing. A mating surface is provided on the abutment block;

[0008] An operating block is slidably arranged in the lock housing so as to move closer to or away from the abutment block, and is connected to an operating reset member for causing the operating block to slide and reset. The operating block is provided with a locking portion and an abutment surface that matches the mating surface. The operating block causes the abutment block to move away from the locking block through the cooperation between the mating surface and the abutment surface. A toggle portion is provided on the operating block near the opening.

[0009] The locking block is rotatably arranged in the lock housing and is connected to a locking reset member that prompts it to rotate and reset. A matching portion is arranged on the locking block. The matching portion and the locking portion constitute a locking or disengaging match when the matching portion moves perpendicular to the sliding direction of the operating block. The matching portion cooperates with the locking portion on the moving path of the operating block close to the abutment block to realize the locking action.

[0010] Preferably, a hooking portion is provided on the operating block, a hooking column is provided on the lock housing, and a tension spring is connected between the hooking column and the hooking portion.

[0011] Preferably, a mounting frame is provided on the lock housing, a hinged end and a locking end are provided on the locking block, the hinged end is hinged on the mounting frame, the matching portion is provided on the locking end, and a compression spring is arranged between a side of the locking end facing away from the matching portion and the lock housing.

[0012] Preferably, a recessed groove is provided on the locking block between the hinge end and the locking end.

[0013] Preferably, a guide portion is further provided on the locking block, a guide groove matching with the guide portion is provided in the lock housing, and a limited position section is further provided on one side of the matching portion on the lock housing.

[0014] Preferably, a mounting block is provided on the lock housing, a spring is connected between one end of the abutment block away from the abutment portion and the mounting block, and a guide piece for the abutment portion to pass through is provided on the lock housing.

[0015] Preferably, both the operating block and the abutting block are provided with sliding blocks, and a sliding groove is provided on the lock housing at a position corresponding to the sliding block.

[0016] Preferably, the locking block includes a hinged portion and a locking tongue portion and an abutting portion located at both ends of the hinged portion, a counterweight is provided on the locking tongue portion or a torsion spring is provided on the hinged portion, and a magnetic member is provided on the locking tongue portion.

[0017] Preferably, the locking portion is configured as a hole body, the matching portion is configured as a pin shaft matched with the hole body, and the abutting surface and the matching surface form an inclined surface match.

[0018] Beneficial effects of the utility model:

[0019] The utility model has a reasonable structural design. By arranging an unlocking piece, an operating block, a locking block and an abutting block, the operating block is locked by toggling it and the locking block is unlocked by pressing it, so that the locking and unlocking actions of the locking block can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the internal structure of the lock housing according to a specific embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram reflecting the abutment block, the operating block and the locking block in a specific embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram reflecting the operating block of a specific embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram reflecting the locking block of a specific embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the abutment block in a specific embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the locking block according to a specific embodiment of the utility model;

[0026] Figure 7 It is a structural schematic diagram reflecting the lock housing of a specific embodiment of the utility model.

[0027] In the figure: 2, locking block; 21, hinged part; 22, lock tongue part; 23, abutment part; 3, lock shell; 32, hook column; 33, mounting frame; 34, guide groove; 35, limit section; 36, mounting block; 37, guide sheet; 38, slide groove; 4, abutment block; 41, abutment part; 42, matching surface; 43, spring; 44, slider; 5, operating block; 51, locking part; 52, abutment surface; 53, toggle part; 54, hook part; 55, tension spring; 6, locking block; 61, matching part; 62, hinged end; 63, locking end; 64, compression spring; 65, recessed groove; 66, guide part. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1-7 As shown, a reverse locking mechanism of a door lock comprises a rotatable locking block 2, and also comprises: an abutting block 4, which can be moved close to or away from the locking block 2, and is provided with an abutting portion 41 that abuts or separates with the locking block 2, and a matching surface 42 is provided on the abutting block 4; an operating block 5, which can be moved close to or away from the abutting block 4, and is provided with a locking portion 51 and an abutting surface 52 that forms an inclined surface with the matching surface 42, and the locking portion 51 realizes a locking action on the moving path of the operating block 5 close to the abutting block 4; a locking block 6, which can be rotatably arranged close to or away from the operating block 5, and is provided with a matching portion 61, and the matching portion 61 and the locking portion 51 constitute a locking or disengaging action along the matching portion 61 perpendicular to the moving direction of the operating block 5; and also comprises a lock shell 3, and the lock block 2 is rotatably arranged on the lock shell 3 and can extend or retract relative to the lock shell 3.

[0030] By adopting the above technical solution, when performing reverse locking, the operating block 5 is operated to move toward the abutting block 4. During the movement of the abutting block 4, the abutting surface 52 and the matching surface 42 are matched with each other in an inclined manner, driving the abutting block 4 to move away from the locking block 2, and the abutting portion 41 is separated from the locking block 2, and the locking portion 51 is locked and matched with the matching portion 61, wherein the locking portion 51 can be a lock hole, and the matching portion 61 can be a lock column, and the two can play a locking match. In this way, the locking block 2 will rotate and extend out of the lock shell 3, thereby completing the reverse locking action. When unlocking, the locking block 6 is moved downward so that the matching portion 61 is separated from the locking portion 51. In this way, under the action of the reset force of the reset member, the reset member can be a tension spring 55, the operating block 5 will move up, the abutting surface 52 is separated from the abutting match with the matching surface 42, and the abutting block 4 moves to the left under the action of the reset force, so that the abutting portion 41 is re-connected to the locking block 2, and the locking block 2 is retracted into the lock shell 3, so that the unlocking action is completed.

[0031] As an improved specific implementation, the operating block 5 is provided with a hooking portion 54, the lock housing 3 is provided with a hooking column 32, and a tension spring 55 is connected between the hooking column 32 and the hooking portion 54; the lock housing 3 is provided with a mounting frame 33, and the locking block 6 is provided with a hinged end 62 and a locking end 63, the hinged end 62 is hinged on the mounting frame 33, the matching portion 61 is provided on the locking end 63, and a compression spring 64 is arranged between a side of the locking end 63 away from the matching portion 61 and the lock housing 3; A recessed groove 65 is provided on the locking block 6 between the hinge end 62 and the locking end 63; a guide portion 66 is also provided on the locking block 6, a guide groove 34 cooperating with the guide portion 66 is provided in the lock housing 3, and a limited position section 35 is also provided on one side of the cooperating portion 61 of the lock housing 3; a mounting block 36 is provided on the lock housing 3, a spring 43 is connected between the end of the abutment block 4 away from the abutment portion 41 and the mounting block 36, and a guide sheet 37 is provided on the lock housing 3 for the abutment portion 41 to pass through.

[0032] By adopting the above technical solution, the tension spring 55 is provided to realize the reset of the operating block 5, and the locking block 6 is hinged to the mounting frame 33, and the compression spring 64 is provided, so that the locking block 6 can be rotated and elastically reset. The provision of the recessed groove 65 on the locking block 6 facilitates the rotation and pressing operation of the locking block 6. The matching provision of the guide portion 66 and the guide groove 34 makes the rotation and movement of the locking block 6 more stable and accurate, and the locking and unlocking cooperation of the matching portion 61 and the locking portion 51 is more accurate. The limiting section 35 can be set as an arc section, and the setting of the limiting section 35 further ensures the accuracy of the movement of the matching portion 61. The setting of the spring 43 provides an elastic restoring force for the abutment block 4. The provision of the guide sheet 37 improves the good guiding property of the movement of the abutment portion 41, so that the abutment portion 41 can accurately drive the locking block 2 to rotate.

[0033] As an improved specific implementation manner, a slider 44 is provided on both the operating block 5 and the abutting block 4 , and a slide groove 38 is provided on the lock housing 3 at a position corresponding to the slider 44 .

[0034] By adopting the above technical solution, the matching arrangement of the sliding block 44 and the sliding groove 38 makes the sliding of the operating block 5 and the abutting block 4 more stable and accurate.

[0035] As an improved specific implementation, the locking block 2 includes a hinge portion 21 and a locking tongue portion 22 and a resisting portion 23 located at both ends of the hinge portion 21 . The mass of the locking tongue portion 22 is greater than the mass of the resisting portion 23 , and a magnetic member is provided on the locking tongue portion 22 .

[0036] By adopting the above technical solution, by making the mass of the lock tongue portion 22 greater than the mass of the abutment portion 23, that is, by providing a counterweight (not shown in the figure) on the lock tongue portion 22, when the abutment portion 41 is not abutted, the lock block 2 can be rotated by the deadweight of the lock tongue portion 22, so that the lock tongue portion 22 extends out of the lock shell 3 to complete the reverse locking, or a torsion spring is provided on the hinge portion 21, so that the lock tongue portion 22 can be rotated and reset. When the abutment portion 41 presses against the abutment portion 23, the lock block 2 will rotate and retract into the lock shell 3, thereby achieving the unlocking action. Among them, a magnetic piece is provided on the lock tongue portion 22. In an unexpected situation, a magnetic block can be placed at the position corresponding to the magnetic piece, and the unlocking action can be achieved by rotating the magnetic block.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A door lock anti-locking mechanism, comprising a lock housing (3), characterized in that: Also includes: A lock block (2) is rotatably mounted on the lock housing (3) and can be extended or retracted relative to the lock housing (3); An abutment block (4) is slidably arranged in the lock housing (3) so as to move closer to or farther from the lock block (2), and is connected to an abutment reset member for urging the abutment block (4) to slide back. The abutment block (4) is provided with an abutment portion (41) which can abut against the lock block (2). The abutment portion (41) can push the lock block (2) to retract into the lock housing (3). When the lock block (2) is not pushed by the abutment portion (41), it is in a state of extending out of the lock housing (3). A mating surface (42) is provided on the abutment block (4); An operating block (5) is slidably arranged in the lock housing (3) so as to move closer to or further away from the abutting block (4), and is connected to an operating reset member for causing the operating block to slide and reset. The operating block (5) is provided with a locking portion (51) and an abutting surface (52) that matches the matching surface (42). The operating block (5) causes the abutting block (4) to move away from the lock block (2) through the matching of the matching surface (42) and the abutting surface (52). A toggle portion (53) is provided on the operating block (5) near the opening (31); The locking block (6) is rotatably arranged in the lock housing (3) and is connected to a locking reset member that promotes its rotation reset. The locking block (6) is provided with a matching portion (61). The matching portion (61) and the locking portion (51) form a locking or disengaging match when the matching portion (61) moves perpendicularly to the sliding direction of the operating block (5). The matching portion (61) cooperates with the locking portion (51) on the moving path of the operating block (5) close to the abutment block (4) to achieve a locking action.

2. The anti-locking mechanism of a door lock according to claim 1, characterized in that: The locking block (2) comprises a hinged portion (21) and a locking tongue portion (22) and a resisting portion (23) located at two ends of the hinged portion (21).

3. The anti-locking mechanism of a door lock according to claim 2, characterized in that: A counterweight is provided on the lock tongue portion (22) or a torsion spring is provided on the hinge portion (21), so that when the abutment portion (23) is not pushed by the abutment portion (41), the lock tongue portion (22) is kept protruding from the lock housing (3).

4. The anti-locking mechanism of a door lock according to claim 2 or 3, characterized in that: A magnetic piece is arranged on the locking tongue portion (22).

5. The anti-locking mechanism of a door lock according to claim 1, 2 or 3, characterized in that: The locking portion (51) is configured as a hole body, the matching portion (61) is configured as a pin shaft matched with the hole body, and the abutting surface (52) and the matching surface (42) form an inclined surface match.

6. The anti-locking mechanism of a door lock according to claim 5, characterized in that: A hooking portion (54) is arranged on the operating block (5), a hooking column (32) is arranged on the lock housing (3), a tension spring (55) is connected between the hooking column (32) and the hooking portion (54), and the tension spring (55) is an operating reset member.

7. The anti-locking mechanism of a door lock according to claim 6, characterized in that: The lock housing (3) is provided with a mounting frame (33), the locking block (6) is provided with a hinged end (62) and a locking end (63), the hinged end (62) is hinged on the mounting frame (33), the matching portion (61) is provided on the locking end (63), a compression spring (64) is arranged between a side of the locking end (63) away from the matching portion (61) and the lock housing (3), the compression spring (64) is a locking reset member, a recessed groove (65) is provided on the locking block (6) between the hinged end (62) and the locking end (63), a guide portion (66) is further provided on the locking block (6), and a guide groove (34) matching with the guide portion (66) is provided in the lock housing (3).

8. The anti-locking mechanism of a door lock according to claim 7, characterized in that: The lock housing (3) is provided with a mounting block (36), a spring (43) is connected between one end of the abutment block (4) away from the abutment portion (41) and the mounting block (36), the spring (43) being an abutment reset member, and a guide piece (37) for the abutment portion (41) to pass through is provided on the lock housing (3).

9. The anti-locking mechanism of a door lock according to claim 8, characterized in that: The operating block (5) and the abutting block (4) are both provided with a sliding block (44), and a sliding groove (38) is provided on the lock housing (3) at a position corresponding to the sliding block (44).

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