Lock body locking mechanism

Abstract

The utility model discloses a lock body locking mechanism which comprises a lock body shell, a spring bolt connected to the lock body shell in a sliding mode, a lock cylinder assembly connected to the lock body shell in a rotating mode and a limiting part, and a reset assembly used for resetting the lock cylinder assembly is arranged in the lock body shell. The lock cylinder assembly comprises a first lock plate and a second lock plate, the first lock plate and the second lock plate are coaxially and rotationally connected, the first lock plate and the second lock plate are each provided with a first driving block for driving the spring bolt to move, and the second lock plate is provided with a first limiting block; the limiting component is arranged on one side of the lock cylinder assembly, a lock hole allowing a key to be inserted is formed in the limiting component, a second limiting block is arranged on the limiting component, and second driving blocks matched with the first driving blocks are arranged on the two sides of the second limiting block. According to the scheme, the connecting shaft is rotated to enable the limiting component to limit the second locking piece so as to limit the second locking piece to rotate in the unlocking direction of the spring bolt, and therefore rapid locking of the door is achieved.

Description

Technical Field

[0001] The utility model relates to a lock body locking mechanism. Background Art

[0002] In existing indoor door locks, the door handle is used to control the opening and closing of the door, the lock body is provided with a locking knob on the side corresponding to the indoor side, and a keyhole for inserting a key is provided on the side corresponding to the outdoor side. When guests come to visit, in order to prevent children from entering the bedroom, the door needs to be locked with a key. Since the key is inserted in the lock body, it affects the appearance, and the user usually has to go to the entrance or cabinet to get the key, which is quite cumbersome. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a lock body locking mechanism, so that the door lock can be locked by rotating the connecting shaft, thereby limiting the second locking plate from driving the lock tongue to unlock.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a lock body locking mechanism, comprising a lock body housing, a lock tongue slidably connected to the lock body housing, a lock core assembly rotatably connected to the lock body housing, and a limiting component, wherein a reset component for resetting the lock core assembly is provided in the lock body housing;

[0005] The lock core assembly includes a first locking plate and a second locking plate, wherein the first locking plate and the second locking plate are coaxially connected to each other for rotation, the first locking plate and the second locking plate are both provided with a first driving block for driving the lock tongue to move, and the second locking plate is provided with a first limiting block;

[0006] The limiting component is arranged on one side of the lock core assembly, and the limiting component is provided with a lock hole for inserting the key, and the limiting component is provided with a second limiting block. Second driving blocks that cooperate with the first driving block are provided on both sides of the second limiting block. When the first driving block rotates toward the limiting component, the first driving block abuts against the second driving block to make the second limiting block rotate close to the first limiting block, so as to limit the first driving block from driving the lock tongue to unlock.

[0007] As a further improvement of the present invention, the first locking plate and the second locking plate are both provided with connecting holes, and connecting shafts are installed in the connecting holes to prevent them from rotating. The connecting shafts can limit their relative rotation with the first locking plate and the second locking plate.

[0008] As a further improvement of the present invention, the second locking plate includes a first component and a second component, the second component is installed between the first component and the first locking plate, the first driving block is arranged on the first component, the first limit block is arranged on the second component, and the first component and the second component are both installed on the connecting shaft corresponding to the second locking plate and cooperate with the connecting shaft to prevent rotation.

[0009] As a further improvement of the present invention, the first locking piece and the side of the first component facing the second component are both provided with an annular protrusion, and both sides of the second component are provided with an annular groove abutting the annular protrusion, or the first locking piece and the side of the first component facing the second component are both provided with an annular groove, and both sides of the second component are provided with an annular protrusion abutting the annular groove.

[0010] As a further improvement of the present invention, a plurality of limiting protrusions are provided on the circumference of the connecting shaft, and the limiting protrusions abut against the outer side of the connecting hole to limit the installation depth of the connecting shaft.

[0011] As a further improvement of the present invention, the limiting component is further provided with a swinging portion, both sides of the swinging portion are provided with convex columns, and the lock body shell is provided with guide grooves on both sides corresponding to the convex columns, and the convex columns extend into the guide grooves.

[0012] As a further improvement of the present invention, the reset assembly includes a spring seat slidably connected to the shell, a reset spring is provided between the spring seat and the lock body shell, a flat surface is provided on the side of the spring seat facing the lock core assembly, and the first lock plate, the first component, and the second component are all provided with abutment blocks on one side close to the lock core seat, and the abutment block is provided with a flat surface that abuts the spring seat.

[0013] As a further improvement of the present invention, the limiting component, the first locking piece, and the first component are all provided with step surfaces that cooperate with the lock body shell for positioning.

[0014] As a further improvement of the present invention, the first locking piece and the first component are both provided with a slider, the lock body shell is provided with a sliding groove at a position corresponding to the slider, and the slider is installed in the sliding groove.

[0015] As a further improvement of the present invention, the first limiting block and the second limiting block are both provided with planes that cooperate with each other.

[0016] The beneficial effects of the present invention are as follows: by rotating the connecting shaft, the limiting component limits the second locking piece to restrict the second locking piece from rotating in the direction of unlocking the lock tongue, thereby realizing rapid locking of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the second locking piece releasing the restriction in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the second locking piece limiting rotation in an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the cooperation between the first locking piece and the second locking piece in an embodiment of the present utility model.

[0022] Figure numbers: 1. lock body shell; 2. lock tongue; 3. lock core assembly; 4. limiting component; 5. reset assembly; 6. first locking plate; 7. second locking plate; 8. first driving block; 9. first limiting block; 10. lock hole; 11. second limiting block; 12. second driving block; 13. connecting hole; 14. first component; 15. second component; 16. annular protrusion; 17. annular groove; 18. limiting protrusion; 19. swinging part; 20. boss; 21. guide groove; 22. spring seat; 23. reset spring; 24. abutment block; 25. step surface; 26. slider; 27. slide groove; 28. connecting shaft. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0024] Reference Figure 1-5 As shown, a lock body locking mechanism includes a lock body housing 1, a lock tongue 2 slidingly connected to the lock body housing 1, a lock core assembly 3 rotatably connected to the lock body housing 1, and a limiting component 4. The lock body housing 1 is provided with a reset component 5 for resetting the lock core assembly 3; the lock core assembly 3 includes a first locking plate 6 and a second locking plate 7, the first locking plate 6 and the second locking plate 7 are coaxially rotatably connected, the first locking plate 6 and the second locking plate 7 are both provided with a first driving block 8 that drives the lock tongue 2 to move, and the second locking plate 7 is provided with a first limiting block 9; the limiting component 4 is arranged on one side of the lock core assembly 3, the limiting component 4 is provided with a second limiting block 11, and both sides of the second limiting block 11 are provided with second driving blocks 12 that cooperate with the first driving block 8. When the first driving block 8 rotates toward the limiting component 4, the first driving block 8 abuts the second driving block 12 to make the second limiting block 11 rotate close to the first limiting block 9, so as to limit the first driving block 8 on the second locking plate 7 to drive the lock tongue 2 to unlock.

[0025] In this solution, the first lock plate 6 is applied on the indoor side and the second lock plate 7 is applied on the outdoor side. When the door needs to prevent outdoor people from entering, the connecting shaft 28 on the first lock plate 6 or the second lock plate 7 is rotated toward the direction of the limiting component 4, so that the second limiting block 11 on the limiting component 4 is close to the first limiting block 9 on the second lock plate 7, thereby limiting the second lock plate 7 from driving the lock tongue 2 to unlock and open the door. Since the first lock plate 6 and the second lock plate 7 are rotatably connected, the first lock plate 6 can freely control the opening and closing of the door without being affected by the limiting component 4, and can limit the connecting shaft 28 on the outdoor side from rotating to open the door. When the second lock plate 7 needs to be unlocked, the key is inserted into the lock hole 10 to make the second limit move away from the first limiting block 9, thereby releasing the restriction on the second lock plate 7.

[0026] The first locking piece 6 and the second locking piece 7 are both provided with a connecting hole 13, and a connecting shaft 28 is installed in each of the connecting holes 13 to prevent rotation. The connecting shaft 28 with anti-rotation prevents relative rotation between the connecting hole 13 and the first locking piece 6 and the second locking piece 7. The connecting hole 13 and the connecting shaft 28 are anti-rotationally matched so that the first locking piece 6 or the second locking piece 7 can rotate along with the connecting shaft 28. The provision of the connecting shaft 28 also facilitates the subsequent further installation of the handle.

[0027] The second locking plate 7 includes a first component 14 and a second component 15. The second component 15 is installed between the first component 14 and the first locking plate 6. The first driving block 8 is provided on the first component 14, and the first limiting block 9 is provided on the second component 15. The first component 14 and the second component 15 are both installed on the connecting shaft 28 corresponding to the second locking plate 7 and engage with the connecting shaft 28 to prevent rotation. Splitting the second locking plate 7 into the first component 14 and the second component 15 facilitates the processing and manufacturing of the mold. When the connecting shaft 28 rotates, the first component 14 and the second component 15 installed on the connecting shaft 28 can rotate along with the connecting shaft 28. In this embodiment, an annular protrusion 16 is provided on the first locking piece 6 and the first component 14 on the side facing the second component 15, and an annular groove 17 is provided on both sides of the second component 15 to abut against the annular protrusion 16, or an annular groove 17 is provided on the first locking piece 6 and the first component 14 on the side facing the second component 15, and an annular groove 17 is provided on both sides of the second component 15 to abut against the annular protrusion 16. The cooperation between the annular protrusion 16 and the annular groove 17 enables rapid positioning and installation of two adjacent parts, reduces axial movement, and improves installation stability.

[0028] The connecting shaft 28 is provided with a plurality of limiting protrusions 18 on its circumference, and the limiting protrusions 18 abut against the outer side of the connecting hole 13 to limit the installation depth of the connecting shaft 28. The provision of a plurality of limiting protrusions 18 facilitates the rapid installation of the connecting shaft 28 and avoids the connecting shaft 28 being installed too deep or too shallow.

[0029] The lock body locking mechanism is described, and the limiting component 4 is also provided with a swinging portion 19, and bosses 20 are provided on both sides of the swinging portion 19. The lock body shell 1 is provided with guide grooves 21 on both sides corresponding to the bosses 20, and the bosses 20 extend into the guide grooves 21. The swinging portion 19 and the limiting component 4 are integrally formed, and the guide grooves 21 are used to limit the maximum swinging angle of the boss 20, and are also used to improve the rotation stability of the limiting component 4.

[0030] The reset assembly 5 includes a spring seat 22 slidably connected to the shell, and a reset spring 23 is provided between the spring seat 22 and the lock body shell 1. The spring seat 22 is provided with a flat surface on the side facing the lock core assembly 3. The first locking piece 6, the first component 14, and the second component 15 are each provided with an abutment block 24 on the side close to the lock core seat. The abutment block 24 is provided with a flat surface that abuts the spring seat 22. The lock body shell 1 is provided with a slide rail for positioning and sliding the spring seat 22. When the connecting shaft 28 rotates to open the lock tongue 2, the spring seat 22 is retreated by the pressure of the abutment block 24. When the connecting shaft 28 releases the external force, the spring seat 22 is ejected, so that the first locking piece 6 or the first component 14 and the second component 15 return to their initial positions.

[0031] The limiting component 4, first locking plate 6, and first component 14 are each provided with a stepped surface 25 that cooperates with the lock housing 1 for positioning. The stepped surface 25 facilitates the positioning of each component on the lock housing 1. A slider 26 is provided on the first locking plate 6 and first component 14. A slot 27 is provided on the lock housing 1 at a position corresponding to the slider 26. The slider 26 is mounted within the slot 27. The slot 27 is provided to guide the slider 26 and also to limit the maximum sliding angle of the slider 26. The first limiting block 9 and the second limiting block 11 are each provided with a mating flat surface. When the first limiting block 9 is driven toward the second limiting block 11 by the first driving block 8, the two flat surfaces mate directly with each other, thereby restricting the second locking plate 7 from driving the lock tongue 2 to unlock.

[0032] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A lock body locking mechanism, characterized in that: It includes a lock body shell, a lock tongue slidably connected to the lock body shell, a lock core assembly rotatably connected to the lock body shell, and a limiting component. A reset assembly for resetting the lock core assembly is provided in the lock body shell; The lock core assembly includes a first locking plate and a second locking plate, wherein the first locking plate and the second locking plate are coaxially connected to each other for rotation, the first locking plate and the second locking plate are both provided with a first driving block for driving the lock tongue to move, and the second locking plate is provided with a first limiting block; The limiting component is arranged on one side of the lock core assembly, and the limiting component is provided with a lock hole for inserting the key, and the limiting part is provided with a second limiting block, and both sides of the second limiting block are provided with second driving blocks that cooperate with the first driving block. When the first driving block rotates toward the limiting component, the first driving block abuts against the second driving block to make the second limiting block rotate close to the first limiting block, so as to limit the first driving block on the second lock plate to drive the lock tongue to unlock.

2. The lock body locking mechanism according to claim 1, characterized in that: The first locking piece and the second locking piece are both provided with connecting holes, and connecting shafts are installed in the connecting holes to prevent them from rotating. The connecting shafts can prevent them from rotating relative to the first locking piece and the second locking piece.

3. The lock body locking mechanism according to claim 2, characterized in that: The second locking plate includes a first component and a second component, the second component is installed between the first component and the first locking plate, the first driving block is arranged on the first component, the first limit block is arranged on the second component, and the first component and the second component are both installed on the connecting shaft corresponding to the second locking plate and cooperate with the connecting shaft to prevent rotation.

4. The lock body locking mechanism according to claim 3, characterized in that: The first locking piece and the first component are both provided with an annular protrusion on one side facing the second component, and the second component is provided with an annular groove on both sides abutting the annular protrusion, or the first locking piece and the first component are both provided with an annular groove on one side facing the second component, and the second component is provided with an annular protrusion on both sides abutting the annular groove.

5. The lock body locking mechanism according to claim 2, characterized in that: A plurality of limiting protrusions are provided on the circumference of the connecting shaft, and the limiting protrusions abut against the outer side of the connecting hole to limit the installation depth of the connecting shaft.

6. The lock body locking mechanism according to claim 1, characterized in that: The limiting component is further provided with a swinging portion, and convex columns are provided on both sides of the swinging portion. The lock body shell is provided with guide grooves on both sides corresponding to the convex columns, and the convex columns extend into the guide grooves.

7. The lock body locking mechanism according to claim 3, characterized in that: The reset assembly includes a spring seat slidably connected to the shell, a reset spring is provided between the spring seat and the lock body shell, a flat surface is provided on the side of the spring seat facing the lock core assembly, and the first lock plate, the first component, and the second component are all provided with abutment blocks on one side close to the lock core seat, and the abutment blocks are provided with a flat surface that abuts the spring seat.

8. The lock body locking mechanism according to claim 3, characterized in that: The limiting component, the first locking piece and the first component are all provided with step surfaces that cooperate with the lock body shell for positioning.

9. The lock body locking mechanism according to claim 3, characterized in that: The first locking piece and the first component are both provided with a sliding block, and the position of the lock body shell corresponding to the sliding block is provided with a sliding groove, and the sliding block is installed in the sliding groove.

10. The lock body locking mechanism according to claim 1, characterized in that: The first limiting block and the second limiting block are both provided with planes that cooperate with each other.

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