Linkage locking mechanism of key storage cavity in door lock handle

Abstract

The linkage locking mechanism of the key storage cavity in the door lock handle comprises a handle body, a lock cylinder, a cam, an opening and closing support, a mounting support, a transmission square strip and a shifting and rotating rod are arranged in the handle body, a storage body is slidably inserted into the handle body, and the handle body and the storage body are in sliding insertion fit through a sliding groove and a guide rail. A containing cavity is formed in the containing body and used for containing a key, a second locking groove is formed in the containing body, the handle body is provided with a locking hole relative to the second locking groove, a locking steel ball is arranged in the locking hole, the cam is provided with an arc-shaped extending arm outside the opening pipe, and the end face of the arc-shaped extending arm forms a pushing and pressing inclined face. And the pushing and pressing inclined surface pushes and presses the locking steel ball to be matched with the second locking groove. The key hidden and stored in the handle body can be locked and cannot be taken out when a person is in a room, safety and privacy of the person in the room are effectively protected, and the handle has the advantages of being compact in structure and convenient to open, close, operate and use.

Description

Technical Field

[0001] This invention relates to a linkage locking mechanism for the key storage cavity in the handle of a door lock. Background Technology

[0002] The key to the interior door handle lock is used less often and is usually put away freely. Over time, people will forget where it was put away, causing inconvenience when using it. For this reason, the current design places it inside the handle on the outside of the door for easy access. However, this design has a significant problem: if someone inside does not want others to enter and locks the door from the inside, people outside can open the handle, take out the key, and unlock the door to enter. Therefore, there is a design flaw in terms of security or privacy. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a linkage locking mechanism for the key storage cavity in the handle of a door lock. This linkage locking mechanism can lock the key storage cavity from the inside, has a compact structure, and is convenient to open and close.

[0004] The technical solution adopted by this invention to solve the technical problem is as follows: It includes a handle body, within which a lock cylinder, a cam, an opening / closing bracket, a mounting bracket, a transmission bar, and a rotary lever are disposed. The cam has a lock cylinder linkage groove and a rotary linkage groove respectively at its axial ends. The lock cylinder is inserted into the handle body and drives the cam through the lock cylinder linkage groove. The opening / closing bracket is fixedly mounted on the handle body and has an axially extending open tube. The cam is axially inserted into the open tube. A pin hole is formed on the side wall of the open tube relative to the cam, and a pin is installed in the pin hole. The cam surface of the cam mates with the tumbler. The mounting bracket is fixedly installed on the door leaf. The mounting bracket has a central hole. The open tube passes through the central hole and is positioned by a snap ring. The side wall of the central hole has a first locking groove relative to the tumbler hole. The tumbler and the first locking groove form an opening and closing engagement. A torsion spring is set between the opening and closing bracket and the mounting bracket to form a reset engagement. One spring foot of the torsion spring is positioned on the opening and closing bracket, and the other spring foot is positioned on the mounting bracket. One end of the transmission bar is inserted into the open tube and rotates with the opening and closing bracket. The rotary lever passes axially through one end of the transmission bar and connects to the rotary linkage groove. The handle body slides into the receiving body. The handle body and the receiving body form a sliding insertion engagement through the slide groove and guide rail. The receiving body has a receiving cavity and a second locking groove. The handle body has a locking hole relative to the second locking groove. A locking steel ball is set in the locking hole. The cam has an arc-shaped extension arm outside the open tube. The end face of the arc-shaped extension arm forms a pushing slope. The pushing slope pushes the locking steel ball to engage with the second locking groove.

[0005] The handle body is provided with a limiting post, and the circumference of the lock cylinder relative to the limiting post is provided with a first limiting groove. The first limiting groove and the limiting post cooperate with each other, and the side wall of the first limiting groove is provided with a notch.

[0006] A magnetic locator is fixed on the side wall of the storage cavity on the storage body.

[0007] A storage block is set in the storage cavity, and the storage block has a storage cavity. The storage block can be flipped up and down in the storage cavity. A left sliding groove is opened on the left side wall of the storage block. A left groove is provided on the left sliding groove. A left positioning hole is provided on the storage body opposite to the left sliding groove. A left spring and a left positioning steel ball are installed in the left positioning hole. The left positioning steel ball cooperates with the left sliding groove and the left groove. A right sliding groove is opened on the right side wall of the storage block. A right groove is provided on the storage body opposite to the right sliding groove. A right positioning steel ball is installed between the right groove and the right sliding groove. There are three left grooves on the left sliding groove, one at the top, one at the middle, and one at the bottom.

[0008] The cavity is formed into a clamping cavity, and a positioning spring is fixed on the side wall of the clamping cavity, holding the key in the clamping cavity.

[0009] The storage cavity is located on the inner left end of the storage body and is fixed with the end cap. The second locking groove is located on the end cap. The side wall of the storage cavity forms an insertion port. The ejection spring is fixed inside the storage cavity. The key is inserted into the insertion port and pushed out by the ejection spring.

[0010] The handle body is provided with a second limiting groove, the storage body is provided with a limiting hole, a limiting spring and a limiting pin are installed in the limiting hole, the limiting pin and the second limiting groove form a limiting fit, and a disassembly hole is provided at the end of the second limiting groove.

[0011] Positioning arc-shaped grooves are provided at both ends of the second limiting groove on one side of the handle body, and positioning holes are provided on the storage body. Springs and positioning steel balls are installed in the positioning holes, and the positioning steel balls and positioning arc-shaped grooves cooperate with each other.

[0012] Through the above-described specific design, the key hidden inside the handle body can be locked and cannot be removed when someone is inside the room, effectively protecting the safety and privacy of people inside the room. It has the advantages of compact structure and convenient opening and closing operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0014] Figure 1 This is a right-view exploded view schematic diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the left-side exploded view of the present invention.

[0016] Figure 3This is a partial assembly structure diagram of the handle body and the storage body in Embodiment 1 of the present invention.

[0017] Figure 4 This is a partial assembly structure diagram of the handle body and the storage body in Embodiment 2 of the present invention.

[0018] Figure 5 yes Figure 4 A schematic diagram showing the structure of the storage unit being pulled out from the handle body, with the storage block sliding and rotating to open within the storage cavity.

[0019] Figure 6 This is a partial assembly structure diagram of the handle body and the storage body in Embodiment 3 of the present invention.

[0020] Figure 7 This is a schematic diagram of the assembly structure of the handle body and the storage body in Embodiment 4 of the present invention.

[0021] Figure 8 yes Figure 7 A schematic diagram showing the structure in which the central storage unit and end caps are installed using screws.

[0022] Figure 9 This is a structural diagram of the handle body.

[0023] Figure 10 yes Figure 9 Rear view.

[0024] Figure 11 This is a schematic diagram of the mounting bracket in this invention.

[0025] Figure 12 This is a schematic diagram of the cam structure in this invention.

[0026] Figure 13 This is a left-side view of the storage block in this invention.

[0027] Figure 14 This is a right-side view of the storage block in this invention.

[0028] In the diagram: 1. Handle body; 2. Lock cylinder; 3. Cam; 4. Opening / closing bracket; 5. Mounting bracket; 6. Transmission bar; 7. Rotating lever; 8. Lock cylinder linkage groove; 9. Rotating linkage groove; 10. Opening tube; 11. Tumbler hole; 12. Tumbler; 13. Snap ring for positioning; 14. First locking groove; 15. Torsion spring; 16. Receiving body; 17. Receiving cavity; 18. Key; 19. Second locking groove; 20. Locking hole; 21. Locking ball; 22. Arc-shaped extension arm; 23. Pushing slope; 24. Slide groove; 25. Guide rail; 26. Center hole; 27. Limiting hole; Positioning spring 28, second limiting groove 29, limiting pin 30, disassembly hole 31, positioning arc groove 32, positioning hole 33, spring 34, positioning steel ball 35, limiting post 36, first limiting groove 37, magnetic suction piece 38, storage block 39, storage cavity 40, left slide groove 41, left groove 42, left positioning hole 43, left spring 44, left positioning steel ball 45, right slide groove 46, right groove 47, right positioning steel ball 48, notch groove 49, positioning spring piece 50, end cap 51, insertion port 52, ejection spring 53. Detailed Implementation

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0031] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] As shown in the figure, the present invention includes a handle body 1. The handle body 1 contains a lock cylinder 2, a cam 3, an opening / closing bracket 4, a mounting bracket 5, a transmission bar 6, and a rotary lever 7. The cam 3 has a lock cylinder linkage groove 8 and a rotary linkage groove 9 at its two axial ends, respectively. The lock cylinder 2 is inserted into the handle body 1 and drives the cam 3 through the lock cylinder linkage groove 8. The opening / closing bracket 4 is fixedly mounted on the handle body 1 and has an axially extending open tube 10. The cam 3 is axially inserted into the open tube 10. A pin hole 11 is formed on the side wall of the open tube 10 relative to the cam 3, and a pin 12 is installed in the pin hole 11. The cam surface of cam 3 mates with the ball 12. Mounting bracket 5 is fixedly mounted on the door leaf. Mounting bracket 5 has a central hole 26. Opening tube 10 passes through the central hole 26 and is positioned by snap ring 13. The side wall of the central hole 26 has a first locking groove 14 relative to the ball hole 11. Ball 12 and the first locking groove 14 form an opening and closing engagement. A torsion spring 15 is provided between the opening / closing bracket 4 and the mounting bracket 5 to form a reset engagement. One spring leg of the torsion spring 15 is positioned on the opening / closing bracket 4, and the other spring leg is positioned on the mounting bracket 5. One end of the transmission bar 6 is inserted into the opening tube 10 and rotates with the opening / closing bracket 4. Rotating rod 7 axially passes through the transmission bar 6. The handle body 1 is connected to the rotary linkage groove 9. The handle body 1 slides into the receiving body 16. The handle body 1 and the receiving body 16 are connected by the sliding groove 24 and the guide rail 25. The receiving body 16 is provided with a storage cavity 17, which can be directly used to place the key 18. The receiving body 16 is provided with a second locking groove 19. The handle body 1 is provided with a locking hole 20 relative to the second locking groove 19. The locking hole 20 is provided with a locking steel ball 21. The cam 3 has an arc-shaped extension arm 22 outside the opening tube 10. The end face of the arc-shaped extension arm 22 forms a pushing slope 23. The pushing slope 23 pushes the locking steel ball 21 to cooperate with the second locking groove 19. The handle body 1 is provided with a limiting post 36, and a first limiting groove 37 is provided on the circumferential surface of the lock cylinder 2 relative to the limiting post 36. The first limiting groove 37 and the limiting post 36 cooperate with each other. A notch 49 is provided on the side wall of the first limiting groove 37 for the installation of the lock cylinder 2. When the first limiting groove 37 and the limiting post 36 are respectively located at the rear of the lock cylinder 2 and the handle body 1, the design of the notch 49 can be omitted. A further design of the present invention is to fix a magnetic piece 38 on the side wall of the storage cavity 17 on the storage body 16, so that the iron key can be attracted and fixed by the magnetic piece 38.Another design of the present invention is to provide a storage block 39 in the storage cavity 17, and a storage cavity 40 in the storage block 39, in which a key 18 is placed. The storage block 39 can be flipped up and down in the storage cavity 17. A left sliding groove 41 is provided on the left side wall of the storage block 39, and a left groove 42 is provided on the left sliding groove 41. A left positioning hole 43 is provided on the storage body 16 opposite to the left sliding groove 41. A left spring 44 and a left positioning steel ball 45 are installed in the left positioning hole 43. The left positioning steel ball 45 cooperates with the left sliding groove 41 and the left groove 42. A right sliding groove 46 is provided on the right side wall of the storage block 39, and a right groove 47 is provided on the storage body 16 opposite to the right sliding groove 46. A right positioning steel ball 48 is installed between the right groove 47 and the right sliding groove 46. There are three left grooves 42 on the left sliding groove 41, one at the top, one at the middle, and one at the bottom. The left positioning steel ball 45 and the right positioning steel ball 48 are arranged on the same axis. When the storage body 16 is pulled out from the handle body 1 through the cooperation of the slide groove 24 and the guide rail 25, the storage block 39 can slide up and down along the left positioning steel ball 45 and the right positioning steel ball 48 respectively through the left slide groove 41 and the right slide groove 46 and open by hinge. The storage cavity 40 in the storage block 39 is used to place the key 18. Another design of the present invention is that the storage cavity 17 is formed as a clamping cavity, and the positioning spring piece 50 is fixed on the side wall of the clamping cavity. The positioning spring piece 50 positions the key 18 in the clamping cavity. In this invention, the storage cavity 17 can also be located on the inner left end of the storage body 16 and a fixed end cap 51 can be provided. The end cap 51 and the storage body 16 can be integrally formed or fixed by screws. A second locking groove 19 is provided on the end cap 51. The side wall of the storage cavity 17 forms an insertion port 52. An ejection spring 53 is fixed inside the storage cavity 17. The key 18 is inserted through the insertion port 52. When the storage body 16 is pulled out from the handle body 1, the key 18 is pushed out of the insertion port 52 by the ejection spring 53. A second limiting groove 29 is provided on the handle body 1, and a limiting hole 27 is provided on the storage body 16. A limiting spring 28 and a limiting pin 30 are installed in the limiting hole 27. The limiting pin 30 and the second limiting groove 29 form a limiting fit. A disassembly hole 31 is provided at the end of the second limiting groove 29. Positioning arc-shaped grooves 32 are respectively provided at both ends of one side of the second limiting groove 29 on the handle body 1, and positioning holes 33 are provided on the storage body 16. Springs 34 and positioning steel balls 35 are installed in the positioning holes 33, and the positioning steel balls 35 and positioning arc-shaped grooves 32 cooperate with each other.

[0034] Under normal circumstances, when a person is indoors, the key 18 is stored in the storage cavity 17 on the storage body 16 of the outdoor handle. When locked from the inside, the mechanism of the indoor handle is designed to rotate the lever 7 clockwise. The lever 7 drives the cam 3 to rotate through the linkage groove 9. The cam surface of the cam 3 presses against the tumbler hole 11 on the opening and closing bracket 4. A part of the tumbler 12 protrudes from the tumbler hole 11 and enters the first locking groove 14 of the mounting bracket 5, completing the locking between the opening and closing bracket 4 and the mounting bracket 5. At this time, the handle cannot be rotated. At the same time, when the cam 3 rotates, the arc-shaped extension arm 22 also rotates. The pushing slope 23 on the arc-shaped extension arm 22 pushes the locking steel ball 21. The locking steel ball 21 enters the second locking groove 19 on the storage body 16, thereby locking the storage body 16 that is inserted and engaged with the handle body 1. The key 18 in the storage body 16 cannot be removed.

[0035] Only when the lever 7 is rotated counterclockwise indoors, the lever 7 drives the cam 3 to rotate via the linkage groove 9. The cam surface of the cam 3 releases the pressure on the pin 12 in the pin hole 11, and the protruding pin 12 can retract into the pin hole 11. The locking between the opening / closing bracket 4 and the mounting bracket 5 is released. At this time, the handle can drive the transmission bar 6 to rotate and unlock. After unlocking, the torsion spring 15 drives the handle to return to its original position. At the same time, when the cam 3 rotates, the arc-shaped extension arm 22 also rotates. The pushing slope 23 on the arc-shaped extension arm 22 releases the locking steel ball 21 from the pushing lock of the second locking groove 19, and the storage body 16 is in a state where it can be pulled out from the handle body 1 to retrieve the key 18.

[0036] When used as an interior door lock, it is generally not necessary to deadbolt it after a person leaves the room. However, there are exceptions where deadbolting may be required. In such cases, the key can be inserted from outside the room and turned counterclockwise to remove it. The lock cylinder 2 drives the cam 3 to rotate via the lock cylinder linkage groove 8. The cam surface of the cam 3 presses against the pin 12 in the pin hole 11 on the opening and closing bracket 4. A part of the pin 12 protrudes from the pin hole 11 and enters the first locking groove 14 of the mounting bracket 5, completing the locking between the opening and closing bracket 4 and the mounting bracket 5. At this time, the handle cannot be rotated. When the lock cylinder 2 rotates, the groove wall of the first limiting groove 37 on the end face of the lock cylinder 2 will abut against the limiting post 36 on the handle body 1 and simultaneously limit it. In this state, the locking ball 21 is relatively located in the middle and rear part of the pushing slope 23. The pushing slope 23 does not press the locking ball 21 tightly, and the locking ball 21 does not enter the second locking groove 19 on the storage body 16. The storage body 16 can be closed by inserting the key 18 and sliding it on the handle body 1. Of course, if you don't want others to open the door, you can take the key 18 with you and not put it in the storage container 16.

[0037] When unlocking from the outside, insert the key from outside the room and turn it clockwise. The lock cylinder 2 drives the cam 3 to rotate through the lock cylinder linkage groove 8. The cam surface of the cam 3 releases the pressure on the pin 12 in the pin hole 11, and the protruding pin 12 can retract into the pin hole 11. The locking between the opening and closing bracket 4 and the mounting bracket 5 is released. At this time, the handle can drive the transmission bar 6 to rotate and unlock. After unlocking, the torsion spring 15 drives the handle to return to its original position. After unlocking from the outside, the locking ball 21 is at the initial lowest point of the pushing slope 23, which does not affect the sliding opening and closing between the storage body 16 and the handle body 1.

[0038] A second limiting groove 29 is provided on the handle body 1, and a limiting hole 27 is provided on the storage body 16. A limiting spring 28 and a limiting pin 30 are installed in the limiting hole 27. The limiting pin 30 and the second limiting groove 29 form a limiting fit. A disassembly hole 31 is provided at the end of the second limiting groove 29. When disassembling, the storage body 16 is pulled out into place, and the disassembly hole 31 is aligned with the limiting pin 30. A steel needle can be used to press the limiting pin 30 to compress the limiting spring 28. When the end face of the limiting pin 30 is disengaged from the second limiting groove 29, the storage body 16 can be pulled out of the handle body 1 as a whole.

[0039] Positioning arc-shaped grooves 32 are respectively provided at both ends of one side of the second limiting groove 29 on the handle body 1. Positioning holes 33 are provided on the storage body 16. Springs 34 and positioning steel balls 35 are installed in the positioning holes 33. The positioning steel balls 35 and the positioning arc-shaped grooves 32 cooperate with each other. When the storage body 16 is pushed in and pulled out into place, the positioning steel balls 35 and the positioning arc-shaped grooves 32 cooperate to stabilize the storage body 16 and enhance the operating feel.

[0040] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A linkage locking mechanism for a key storage cavity in a door lock handle, comprising a handle body, a lock cylinder, a cam, an opening / closing bracket, a mounting bracket, a transmission bar, and a rotary lever, wherein the cam has a lock cylinder linkage groove and a rotary linkage groove respectively provided at its axial ends, the lock cylinder is inserted into the handle body and drives the cam through the lock cylinder linkage groove, the opening / closing bracket is fixedly mounted on the handle body, the opening / closing bracket has an axially extending open tube, the cam is axially inserted into the open tube, and a pin hole is formed on the side wall of the open tube relative to the cam, and a pin is installed in the pin hole. The cam surface of the cam mates with the tumbler. A mounting bracket is fixedly installed on the door leaf. The mounting bracket has a central hole, through which an open tube passes and is positioned by a snap ring. A first locking groove is formed on the side wall of the central hole relative to the tumbler hole. The tumbler and the first locking groove form an opening and closing engagement. A torsion spring is provided between the opening / closing bracket and the mounting bracket to form a reset engagement. One leg of the torsion spring is positioned on the opening / closing bracket, and the other leg is positioned on the mounting bracket. One end of the transmission bar is inserted into the open tube and rotates with the opening / closing bracket. A rotary lever axially passes through one end of the transmission bar and connects to a rotary linkage groove. Its characteristics are: The handle body (1) slides to receive the receiving body (16). The handle body (1) and the receiving body (16) are connected by sliding groove (24) and guide rail (25). The receiving body (16) is provided with a storage cavity (17) and a second locking groove (19). The handle body (1) is provided with a locking hole (20) relative to the second locking groove (19). A locking ball (21) is provided in the locking hole (20). The cam (3) has an arc-shaped extension arm (22) outside the open tube (10). The end face of the arc-shaped extension arm (22) forms a pushing slope (23). The pushing slope (23) pushes the locking ball (21) to cooperate with the second locking groove (19).

2. The linkage locking mechanism for the key storage cavity in a door lock handle according to claim 1, characterized in that: The handle body (1) is provided with a limiting post (36), and the lock cylinder (2) relative to the limiting post (36) is provided with a first limiting groove (37) on its circumference. The first limiting groove (37) and the limiting post (36) cooperate with each other, and the side wall of the first limiting groove (37) is provided with a notch (49).

3. The linkage locking mechanism for the key storage cavity in a door lock handle according to claim 1 or 2, characterized in that: A magnetic plate (38) is fixed on the side wall of the storage cavity (17) on the storage body (16), and the magnetic plate (38) attracts the key (18).

4. The linkage locking mechanism for the key storage cavity in a door lock handle according to claim 1 or 2, characterized in that: A storage block (39) is provided in the storage cavity (17), and a storage cavity (40) is provided in the storage block (39). A key (18) is placed in the storage cavity (40). The storage block (39) can be flipped up and down in the storage cavity (17). A left sliding groove (41) is provided on the left side wall of the storage block (39), and a left groove (42) is provided on the left sliding groove (41). A left positioning hole (43) is provided on the storage body (16) opposite to the left sliding groove (41). 3) A left spring (44) and a left positioning steel ball (45) are installed in the middle. The left positioning steel ball (45) cooperates with the left slide groove (41) and the left groove (42). A right slide groove (46) is opened on the right side wall of the storage block (39). A right groove (47) is provided on the storage body (16) opposite to the right slide groove (46). A right positioning steel ball (48) is installed between the right groove (47) and the right slide groove (46). There are three left grooves (42) on the left slide groove (41) at the top, middle and bottom.

5. The linkage locking mechanism of the key storage cavity in the handle of a door lock according to claim 1 or 2, characterized in that it is placed... The cavity (17) is formed into a clamping cavity, and a positioning spring (50) is fixed on the side wall of the clamping cavity, and a key (18) is clamped in the clamping cavity.

6. The linkage locking mechanism for the key storage cavity in a door lock handle according to claim 1 or 2, characterized in that: The storage cavity (17) is located on the inner left end of the storage body (16) and the end cap (51) is fixed. The second locking groove (19) is located on the end cap (51). The side wall of the storage cavity (17) forms an insertion port (52). The ejection spring (53) is fixed inside the storage cavity (17). The key (18) is inserted through the insertion port (52) and pushed out by the ejection spring (53).

7. The linkage locking mechanism of the key storage cavity in the handle of a door lock according to claim 3, characterized in that... The handle body (1) is provided with a second limiting groove (29), and the storage body (16) is provided with a limiting hole (27). A limiting spring (28) and a limiting pin (30) are installed in the limiting hole (27). The limiting pin (30) and the second limiting groove (29) form a limiting fit. The end of the second limiting groove (29) is provided with a disassembly hole (31).

8. The linkage locking mechanism of the key storage cavity in the handle of a door lock according to claim 4, characterized in that... The handle body (1) is provided with a second limiting groove (29), and the storage body (16) is provided with a limiting hole (27). A limiting spring (28) and a limiting pin (30) are installed in the limiting hole (27). The limiting pin (30) and the second limiting groove (29) form a limiting fit. The end of the second limiting groove (29) is provided with a disassembly hole (31).

9. The linkage locking mechanism of the key storage cavity in the handle of a door lock according to claim 5, characterized in that... The handle body (1) is provided with a second limiting groove (29), and the storage body (16) is provided with a limiting hole (27). A limiting spring (28) and a limiting pin (30) are installed in the limiting hole (27). The limiting pin (30) and the second limiting groove (29) form a limiting fit. The end of the second limiting groove (29) is provided with a disassembly hole (31).

10. The linkage locking mechanism of the key storage cavity in the handle of a door lock according to claim 6, characterized in that... The handle body (1) is provided with a second limiting groove (29), and the storage body (16) is provided with a limiting hole (27). A limiting spring (28) and a limiting pin (30) are installed in the limiting hole (27). The limiting pin (30) and the second limiting groove (29) form a limiting fit. The end of the second limiting groove (29) is provided with a disassembly hole (31).

11. The linkage locking mechanism of the key storage cavity in the handle of a door lock according to claim 7, 8, 9, or 10, characterized in that... The handle body (1) has a second limiting groove (29) with two ends of a positioning arc groove (32) on one side. The storage body (16) has a positioning hole (33). A spring (34) and a positioning steel ball (35) are installed in the positioning hole (33). The positioning steel ball (35) and the positioning arc groove (32) cooperate with each other.

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