Back locking mechanism of door lock

Abstract

The back locking mechanism of the door lock comprises a panel, and a handle and the back locking mechanism are arranged on the panel. According to the back locking mechanism of the door lock, the rotating shaft is arranged on the transmission mechanism of the handle, the locking block matched with the rotating shaft is arranged on the back locking mechanism, the first groove matched with the lower end of the rotating shaft is formed in the upper end of the locking block, and locking and unlocking between the locking block and the rotating shaft can be achieved by shifting the shifting block up and down; the ball screw is arranged on the locking block, and the ball screw is matched with the positioning hole in the panel to play a positioning role, so that the locking block is positioned at a locking position; the locking block is further provided with an elastic piece matched with the limiting column of the panel, so that the locking block can be limited to slide at will, and the current state of the locking block is guaranteed; a red counter bore matched with the shifting block is further formed in the panel, and when the shifting block is shifted to the locking state, the counter bore is exposed, and the function of prompting that the door lock is in the counter locking state is achieved; the back locking mechanism is simple in structure and convenient to assemble, raw material and manufacturing cost is reduced, and meanwhile the safety of the door lock can be improved.

Description

Technical Field

[0001] This utility model relates to a deadbolt mechanism for a door lock. Background Technology

[0002] Currently, most mechanical door locks on the market are equipped with a deadbolt mechanism to lock the door. When in use, simply rotating or moving the deadbolt knob or lever will activate the locking mechanism inside the door lock to lock the door, increasing the security performance of the door lock. However, the deadbolt mechanism of current door locks is complex, difficult to assemble, and has high material and labor costs. Utility Model Content

[0003] This utility model provides a deadbolt mechanism for a door lock.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A door lock's deadbolt mechanism includes a panel with a handle and a deadbolt mechanism. The handle is rotatably connected to the panel via a transmission structure. A rotating shaft is fixedly connected to the end of the transmission mechanism of the handle on the inner side of the panel. A first through hole is provided on the panel. The deadbolt mechanism includes a lever and a locking block. The lever is located on the outer side of the panel and passes through the first through hole to the inner side of the panel, where it is fixedly connected to the locking block. A first groove is provided at the upper end of the locking block to mate with the lower end of the rotating shaft. A ball screw is fixed to the back of the locking block, with the ball bearing of the ball screw located on the outer side of the locking block. A positioning hole mates with the ball screw is provided on the inner side of the panel.

[0006] Preferably, the handle and the deadbolt mechanism are arranged from top to bottom on the panel; the pivot and the locking block are arranged vertically opposite each other.

[0007] Preferably, the lower end of the rotating shaft is a rounded rectangle, and the first groove is a rounded rectangle.

[0008] Preferably, the bottom end of the rotating shaft is provided with an outward protrusion.

[0009] Preferably, the lower end of the toggle block is fixedly connected to the locking block.

[0010] Preferably, the lower end of the first groove is provided with an extension groove that mates with the protrusion.

[0011] Preferably, the cover plate is fixed above the rotating shaft and at the extension groove of the locking block by screws, and the locking block and the outer side of the rotating shaft are provided with a cover plate, the lower end of the cover plate being in contact with the upper end plate surface of the locking block.

[0012] Preferably, the lower end of the locking block is provided with a second through hole, which is located on the axis of the locking block. The back of the locking block is also provided with a second groove, in which two symmetrical spring pieces are provided. The spring pieces are arc-shaped and the arc-shaped parts of the two spring pieces are arranged opposite each other with a channel in the middle. The inner side of the panel is provided with a limiting post that cooperates with the spring pieces. The diameter of the limiting post is greater than the shortest distance between the arc-shaped parts of the two spring pieces. The limiting post is located in the second through hole.

[0013] Preferably, the panel also has a recessed hole with a red interior. When the panel is in the unlocked state, the red recessed hole is covered by a lever; when the lever is moved upwards to the locked state, the red recessed hole is revealed.

[0014] Preferably, the locking block has a symmetrical overall structure.

[0015] Compared with existing technologies, the deadbolt mechanism of this utility model door lock uses a rotating shaft on the transmission mechanism of the handle, and a locking block that cooperates with the rotating shaft on the deadbolt mechanism. The upper end of the locking block has a first groove that cooperates with the lower end of the rotating shaft. By moving a lever up and down, the locking block and the rotating shaft can be locked and unlocked. Furthermore, a ball screw is set on the locking block, which cooperates with the positioning hole on the panel to position the locking block in the locked position. The locking block also has a spring piece that cooperates with the limiting post of the panel to restrict the locking block from sliding freely and ensure its current state. The panel also has a red countersunk hole that cooperates with the lever. When the lever is moved to the locked state, the countersunk hole will be exposed, indicating that the door lock is in the deadbolt state. The deadbolt mechanism has a simple structure, is easy to assemble, reduces material and manufacturing costs, and improves the security of the door lock. Attached Figure Description

[0016] Figure 1 This is a first perspective view of the deadbolt mechanism of the door lock of this utility model.

[0017] Figure 2 This is a second perspective view of the deadbolt mechanism of the door lock of this utility model.

[0018] Figure 3 This is a partial schematic diagram of the deadbolt mechanism of the door lock of this utility model.

[0019] Figure 4 This is a partial schematic diagram of the deadbolt mechanism of the door lock of this utility model.

[0020] Figure 5 This is a schematic diagram of the locking state of the deadbolt mechanism of the door lock of this utility model.

[0021] Figure 6 The deadbolt mechanism of the door lock of this utility model Figure 5 Enlarged view at point A.

[0022] Figure 7 This is a schematic diagram showing the unlocking state of the deadbolt mechanism of the door lock of this utility model.

[0023] Figure 8 The deadbolt mechanism of the door lock of this utility model Figure 7 Enlarged view at point B. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 8 As shown, a door lock's deadbolt mechanism includes a panel 1. The panel 1 is provided with a handle 2 and a deadbolt mechanism 3 from top to bottom. The handle 2 is rotatably connected to the panel 1 through a transmission structure. On the inner side of the panel 1, a rotating shaft 4 is fixedly connected to the end of the transmission mechanism of the handle 2. The rotating shaft 4 can rotate with the handle 2. The lower end of the rotating shaft 4 is shaped as a rounded rectangle, and the bottom end of the rotating shaft 4 is provided with an outward protrusion 41.

[0026] The panel 1 is provided with a first through hole 11. The locking mechanism 3 includes a toggle block 31 and a locking block 32. The toggle block 31 is located on the outside of the panel 1 and passes through the first through hole 11 to the inside of the panel 1 and is fixedly connected to the lower end of the locking block 32. The toggle block 31 can move up and down in the first through hole 11, thereby driving the locking block 32 to move up and down.

[0027] The locking block 32 has a symmetrical structure. The upper end of the locking block 32 is provided with a first groove 322 that mates with the lower end of the rotating shaft 4. The first groove 322 is a rounded rectangle. The lower end of the first groove 322 is provided with an extension groove that mates with the protrusion 41. The locking block 32 and the rotating shaft 4 are arranged vertically opposite each other. A cover plate 5 is provided on the outside of the locking block 32 and the rotating shaft 4. The cover plate 5 is fixed to the upper part of the rotating shaft 4 and the extension groove of the locking block 32 by screws. The lower end of the cover plate 5 is in contact with the upper plate surface of the locking block 32, thereby restricting the locking block 32 to the inside of the panel 1.

[0028] The lower end of the locking block 32 is provided with a second through hole 321, which is located on the axis of the locking block 32. The back of the locking block 32 is also provided with a second groove 323, in which two symmetrical spring pieces 33 are provided. The spring pieces 33 are arc-shaped and the arc-shaped parts of the two spring pieces 33 are arranged opposite each other, with a channel in the middle. The inner side of the panel 1 is provided with a limiting post 12 that cooperates with the spring pieces. The shortest distance between the arc-shaped parts of the two spring pieces 33 is less than the diameter of the limiting post 12. The limiting post 12 is located in the second through hole 321. The back of the locking block 32 is also fixed with a ball screw 6, in which the ball of the ball screw 6 is located on the outer side of the locking block 32. The inner side of the panel 1 is provided with a positioning hole 13 that cooperates with the ball screw 6.

[0029] When the lever 31 is moved upward, it causes the locking block 32 to move upward. The first groove 322 and its lower extension groove respectively engage with the lower end of the rotating shaft 4 and the lower end protrusion 41. The ball of the ball screw 6 engages with the positioning hole 13 to position the locking block 32 in a relatively locked position. At this time, the rotating shaft 4 is locked and cannot rotate. The panel 1 is also provided with a countersunk hole 14, the inside of which is red. When in the unlocked state, the countersunk hole 14 is covered by the lever 31; when the lever 31 is moved upward to the locked state, the countersunk hole 14 will be exposed, indicating to the user that the door lock is in the deadbolt state; then the lever 31 is moved downward to force the lock to lock. When the ball screw 6 is pushed away from the positioning hole 13, the locking block 32 returns to the relative unlocked position, and the lower end of the rotating shaft 4 leaves the first groove 322. At this time, the rotating shaft 4 can be rotated. When the toggle block 31 moves up and down, the spring piece 33 will move up and down with the toggle block 31. When the toggle block 31 is in the locked position, the limit post 12 is located at the lower end of the two spring pieces 33. The limit post 12 and the spring piece 33 cooperate to prevent the locking block 32 from moving downward. When the toggle block 31 is in the unlocked position, the limit post 12 is located at the upper end of the two spring pieces 33. The limit post 12 and the spring piece 33 cooperate to prevent the locking block 32 from moving upward.

[0030] The deadbolt mechanism of this door lock uses a rotating shaft 4 on the transmission mechanism of the handle 2 and a locking block 32 on the deadbolt mechanism 3 to cooperate with the rotating shaft 4. The upper end of the locking block 32 has a first groove 322 that cooperates with the lower end of the rotating shaft 4. By moving the lever 31 up and down, the locking block 32 and the rotating shaft 4 can be locked and unlocked. A ball screw 6 is provided on the locking block 32, which cooperates with the positioning hole 13 on the panel 1 to position the locking block 32 in the locked position. The locking block 32 also has a spring piece 33 that cooperates with the limiting post 12 on the panel 1 to restrict the locking block 32 from sliding and ensure its current state. The panel 1 also has a red countersunk hole 14 that cooperates with the lever 31. When the lever 31 is moved to the locked state, the countersunk hole 14 will be exposed, indicating that the door lock is in the deadbolt state. The deadbolt mechanism has a simple structure, is easy to assemble, reduces material and manufacturing costs, and improves the security of the door lock.

[0031] Finally, it should be noted that the above embodiments only illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A door lock's anti-locking mechanism, comprising a panel (1), a handle (2) and an anti-locking mechanism (3) arranged on the panel (1), the handle (2) being rotatably connected to the panel (1) through a transmission structure, characterized in that, On the inner side of the panel (1), the transmission mechanism end of the handle (2) is fixedly connected with a rotating shaft (4), the panel (1) is provided with a first through hole (11), the anti-locking mechanism (3) comprises a dial block (31) and a locking block (32), the dial block (31) is arranged on the outer side of the panel (1) and penetrates through the first through hole (11) to the inner side of the panel (1) and is fixedly connected with the locking block (32), and the upper end of the locking block (32) is provided with a first groove (322) matched with the lower end of the rotating shaft (4); the back of the locking block (32) is fixedly connected with a wave bead screw (6), wherein the steel ball of the wave bead screw (6) is arranged on the outer side of the locking block (32), and the inner side of the panel (1) is provided with a positioning hole (13) matched with the wave bead screw (6).

2. A latch mechanism for a door lock according to claim 1, characterised in that The handle (2) and the anti-locking mechanism (3) are arranged from top to bottom on the panel (1); the rotating shaft (4) and the locking block (32) are arranged oppositely.

3. The deadbolt mechanism of claim 1, wherein The lower end of the rotating shaft (4) is in the shape of a rounded rectangle, and the first groove (322) is in the shape of a rounded rectangle.

4. The deadbolt mechanism of claim 1, wherein The bottom end of the rotating shaft (4) is provided with an outward protrusion (41).

5. The deadbolt mechanism of claim 1, wherein, The dial block (31) is fixedly connected with the lower end of the locking block (32).

6. The deadbolt mechanism of claim 4, wherein, The lower end of the first groove (322) is provided with an extension groove matched with the protrusion (41).

7. The deadbolt mechanism of claim 1, wherein The cover plate (5) is fixed above the rotating shaft (4) and at the extension groove of the locking block (32), the outer sides of the locking block (32) and the rotating shaft (4) are provided with the cover plate (5), and the lower end of the cover plate (5) is in abutment with the upper end plate surface of the locking block (32).

8. The deadbolt mechanism of claim 1, wherein, The lower end of the locking block (32) is provided with a second through hole (321), the second through hole (321) is arranged on the axis of the locking block (32), the back of the locking block (32) is further provided with a second groove (323), two symmetrical elastic sheets (33) are arranged in the second groove (323), the elastic sheets (33) are in the shape of an arc, and the arc-shaped parts of the two elastic sheets (33) are arranged oppositely, a channel is left in the middle, the inner side of the panel (1) is provided with a limiting column (12) matched with the elastic sheets, the diameter of the limiting column is greater than the shortest distance between the arc-shaped parts of the two elastic sheets (33), and the limiting column (12) is located in the second through hole (321).

9. The deadbolt mechanism of claim 1, wherein, The panel (1) is further provided with a counterbore (14), the inside of the counterbore is red, when in the unlocking state, the counterbore (14) is covered by the dial block (31); when the dial block (31) is dialled upward to the locking state, the counterbore (14) is exposed.

10. A latch mechanism for a door lock according to any one of claims 1 to 9, wherein The locking block (32) is left-right symmetrical in overall structure.

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