Handle reversing structure of door lock

Abstract

The application relates to a handle reversing structure of a door lock, which comprises a lock shell, a handle rotatably connected to the lock shell, a handle mounting hole formed in the lock shell, one end of the handle penetrating into the handle mounting hole and extending into the lock shell, the handle being connected to the lock shell through a fixing assembly, one end of the handle extending into the lock shell being connected to a reversing piece for reversing the rotating direction of the handle, the reversing piece being circumferentially limited with the handle, a reset piece being arranged between the reversing piece and the fixing assembly and used for driving the reversing piece to reset, an elastic limiting assembly being arranged at the lower end of the reversing piece and used for limiting the reversing piece to change the rotating direction of the reversing piece, two limiting cooperation intervals being arranged between the elastic limiting assembly and the reversing piece, and the elastic limiting assembly being detachably connected to the lock shell. The reversing structure provided by the application is improved and simplified, manual operation without tools is realized, a user only needs to use hands to operate the elastic limiting assembly, the reversing of the handle can be realized, the structure is simple, and the reversing is convenient.

Description

Technical Field

[0001] This utility model relates to the field of door locks, specifically to a handle reversing structure for a door lock. Background Technology

[0002] The handle is a door lock component operated by the user's hand. Depending on the installation environment and usage requirements, the required orientation of the handle during installation—that is, the direction of rotation—may vary. To address this, some door locks now incorporate a handle reversing mechanism to adjust the handle's orientation during installation.

[0003] When this type of door lock with a reversible handle is manufactured, the handle is in a free and unrestrained state, meaning the direction of the handle is not fixed. After the user purchases the lock, the door lock installer or the user installs it on the door panel and then fixes the direction of the handle according to the user's needs through the reversible handle structure.

[0004] Current handle reversing mechanisms are complex. Common structures require changing the position of screws and altering their engagement with other components to achieve the reversing effect. This existing structure requires multiple layers of parts to engage with the screws. Reversing the handle necessitates disassembling multiple components such as screws, washers, and limit blocks using tools like screwdrivers, disassembling the original structure, and then reassembling. This not only increases the processing steps and assembly complexity of the lock panel but also makes the reversing operation extremely inconvenient, which is unfriendly to both manufacturers and users. During lock installation, users must precisely align the parts to perform the reversing operation, a task difficult for non-professionals to complete independently. More importantly, frequent disassembly can cause wear or loss of parts, reducing the overall stability and lifespan of the lock.

[0005] Therefore, how to overcome the above-mentioned defects and provide a door lock handle reversing structure that is convenient to reverse and has a simple structure has become an important issue that needs to be addressed by those skilled in the art. Utility Model Content

[0006] This invention overcomes the shortcomings of the above-mentioned technologies and provides a handle reversing structure for a door lock.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A handle reversing structure for a door lock includes a lock housing, a handle rotatably connected to the lock housing, a handle mounting hole on the lock housing, one end of the handle passing through the handle mounting hole and extending into the lock housing, the handle being connected to the lock housing via a fixing component, a reversing component for changing the rotation direction of the handle being connected to the end of the handle extending into the lock housing, the reversing component being circumferentially limited by the handle, a reset component for driving the reversing component to reset being provided between the reversing component and the fixing component, an elastic limiting component being provided at the lower end of the reversing component for cooperating with the limiting component to change the rotation direction of the reversing component, two limiting cooperation intervals being provided between the elastic limiting component and the reversing component, and the elastic limiting component being detachably connected to the lock housing.

[0009] Furthermore, the fixing component includes a ball bearing sleeved on the handle and assembled on the outer wall of the lock housing, and a fixing plate installed on the inner wall of the lock housing. The fixing plate is provided with a first screw hole. The ball bearing includes an outer ring, and the outer ring of the ball bearing is provided with a second screw hole. The handle mounting hole includes a guide limiting hole opened on its outer circumference. A first screw is installed in the first screw hole. The first screw passes through the first screw hole and the guide limiting hole in sequence and is then threaded into the second screw hole.

[0010] Furthermore, the reset element is a torsion spring, which is sleeved on the reversing element. The reversing element includes a protrusion that abuts against the torsion spring when rotating. The fixing plate includes a first stop, and the torsion spring includes two legs. The first stop is located between the two legs.

[0011] Furthermore, the handle includes a connecting hole, and the reversing component includes a connector that is inserted into the connecting hole and engages with the circumferential limiting mechanism of the handle.

[0012] Furthermore, the elastic limiting component includes a base detachably connected to the lock housing, and a telescopic piece connected to the base by a spring and capable of moving up and down relative to the base. The base has a movable groove for the telescopic piece to move up and down. The movable groove includes a mounting groove for installing the spring. The lower end of the telescopic piece abuts against the spring. The telescopic piece includes a stop block disposed at its lower end. The movable groove includes a blocking part for limiting the movement of the stop block.

[0013] Furthermore, the commutator also includes a commutator segment, the commutator segment including a second baffle and limiting grooves symmetrically opened on both sides of the second baffle, the telescopic segment including a third baffle disposed at its upper end, the telescopic segment being slidably connected to one of the limiting grooves through the third baffle.

[0014] Furthermore, the lock housing is provided with a first connecting post with internal threads, and the base is provided with a second connecting post that is hollow inside. The inner diameter of the second connecting post is larger than the outer diameter of the first connecting post. The second connecting post is sleeved on the first connecting post, and a second screw is provided inside the second connecting post that passes through the second connecting post and is threaded into the first connecting post.

[0015] Furthermore, a limiting pin is installed in the movable groove, and a first through hole is provided on the telescopic piece for the limiting pin to move therein, and the limiting pin is inserted into the first through hole.

[0016] Furthermore, the base includes a detachable cover plate, the limiting pin has an internal hollow structure and an internal thread, the cover plate is threaded to the limiting pin by a third screw, and the cover plate has a second through hole for the third screw to pass through.

[0017] Furthermore, the lock case also includes a rear cover, on which a third through hole is provided to expose the second baffle and provide it with room to move.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The handle reversing structure provided in this case achieves linkage between the handle and the reversing component through circumferential limiting engagement. Then, an elastic limiting component is set to engage with the reversing component, allowing the user to easily switch the limiting engagement between the elastic limiting component and the reversing component between two limiting ranges by operating the elastic limiting component, thus easily reversing the handle. Through structural improvements and simplifications, the reversing structure provided in this case achieves tool-free manual operation; the user only needs to operate the elastic limiting component by hand to reverse the handle. The structure is simple and the reversing is convenient. Attached Figure Description

[0020] Figure 1 This is an exploded view of the handle reversing structure in this case.

[0021] Figure 2 This is an assembly diagram showing the handle reversing structure in this case with the back cover in the concealed state.

[0022] Figure 3 This is a structural diagram of the fixed components in this case.

[0023] Figure 4 This is a structural schematic diagram of the commutator in this case.

[0024] Figure 5 This is a structural schematic diagram of the elastic limiting component in this case. Detailed Implementation

[0025] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0026] like Figures 1 to 5 As shown, this invention provides a handle reversing structure for a door lock, including a lock housing 100. A handle 1 is rotatably connected to the lock housing 100, and a handle mounting hole 101 is provided on the lock housing 100. One end of the handle 1 passes through the handle mounting hole 101 and extends into the lock housing 100. The handle 1 is connected to the lock housing 100 through a fixing component 2, which achieves a stable connection between the handle 1 and the lock housing 100 and provides rotational support for the handle 1 to ensure that the handle 1 can rotate stably relative to the lock housing 100. One end of the handle 1 extending into the lock housing 100 is connected to a reversing component 3 for changing the rotation direction of the handle 1. The reversing component 3 is circumferentially limited to the handle 1. A reset component 4 is provided between the reversing component 3 and the fixing component 2 for driving the reversing component 3 to reset. Because the handle 1 and the reversing component 3 are circumferentially limited, when the reset component 4 resets, it can drive the handle 1 and the reversing component 3 to rotate and reset synchronously. In other words, after the handle 1 is fixed in one direction, the user rotates the handle 1 in one direction to open the door and releases the handle 1. At this time, the reset component 4 drives the handle 1 to automatically reset to the initial position, which is convenient and facilitates the next door opening operation. The lower end of the reversing component 3 is provided with an elastic limiting component 5 for limiting cooperation with the reversing component 3 to change the rotation direction of the reversing component 3. In specific implementation, there are two limiting cooperation intervals between the elastic limiting component 5 and the reversing component 3. The limiting cooperation interval is also the travel range of the reversing component 3 relative to the elastic limiting component 5. When a user needs to change the direction of the door lock handle 1, they only need to operate the elastic limiting component 5 to release the limiting engagement between the reversing component 3 and the elastic limiting component 5, changing the limiting engagement range between the reversing component 3 and the elastic limiting component 5 to another limiting engagement range. Then, the handle 1 is rotated in the desired direction. After rotating the handle 1, the elastic limiting component 5 is released so that it re-engages with the reversing component 3 in the new limiting engagement range, thus completing the reversing operation of the handle 1. The elastic limiting component 5 is detachably connected to the lock housing 100, making the reversing structure of this invention universally applicable to more types of reversing locks, thus improving its practicality. The reversing structure provided in this invention, through structural improvements and simplifications, achieves tool-free manual operation. Users only need to operate the elastic limiting component 5 by hand to change the direction of the handle 1, making the structure simple and the reversing convenient.

[0027] like Figures 1-3As shown, specifically, the fixing component 2 includes a ball bearing 21 sleeved on the handle 1 and assembled on the outer wall of the lock housing 100, and a fixing plate 22 installed on the inner wall of the lock housing 100. The ball bearing 21 is a common accessory in the art, which includes an inner ring, an outer ring 211, and balls disposed between the inner and outer rings. The inner ring has a through hole for an object to pass through and fit. In specific implementation, the ball bearing 21 commonly used in the art can be used. It can be understood that the fixing plate 22 also has a corresponding through hole for the handle 1 to pass through. That is to say, the handle 1 is connected to the reversing component 3 after passing through the inner ring of the ball bearing 21 and the fixing plate 22. The fixing plate 22 has a first screw hole 221, and the outer ring 211 of the ball bearing 21 has a second screw hole 2111. The handle mounting hole 101 includes a guide limiting hole 1011 opened on its outer periphery. A first screw 23 is installed in the first screw hole 221. The first screw 23 passes through the first screw hole 221 and the guide limiting hole 1011 in sequence and is then threaded into the second screw hole 2111. The guide limiting hole 1011 is used to guide the first screw 23 to be accurately aligned and to provide the first screw 23 with an installation position. At the same time, it can cooperate with the first screw 23 to effectively limit the circumferential displacement of the fixing plate 22. This screw connection method is simple in structure and easy to disassemble and assemble. Through the clamping structure of the ball bearing 21 and the fixing plate 22, the handle 1 does not loosen axially or wobble radially under frequent operation. The first screw hole 221, the second screw hole 2111, the guide limiting hole 1011, and the first screw 23 are a set of matching screws. In specific implementation, in order to make the connection more stable, in this case, the number of the first screw hole 221, the second screw hole 2111, the guide limiting hole 1011, and the first screw 23 is preferably set to three sets. The three sets of symmetrically distributed first screws 23 form a triangular support, which has better anti-torsion performance than the single-point fixing scheme.

[0028] like Figure 1 , Figure 2 As shown, the reset component 4 in this case is preferably a torsion spring sleeved on the reversing component 3. The torsion spring is a common component in the art, comprising two legs 41 to support it and ensure its normal function. The reversing component 3 includes a protrusion 31 that abuts against the legs 41 of the torsion spring during rotation. The fixing plate 22 includes a first stop 222, which is positioned between the two legs 41 to support the legs 41 of the torsion spring from different directions during rotation of the reversing component 3, providing support points for the two legs 41. When the reversing component 3 rotates, the protrusion 31 abuts against one leg 41 of the torsion spring and drives it to rotate, while the other leg 41 of the torsion spring 4 is supported by the first stop 222, thereby compressing the torsion spring and storing elastic potential energy. When the user releases the handle, the torsion spring releases its elastic potential energy, driving the reversing component 3 to automatically reset, and the reversing component 3 drives the handle 1 to reset, improving the reliability and stability of the handle 1 during operation and facilitating use.

[0029] Furthermore, such as Figure 1 , Figure 2 , Figure 4 As shown, the handle 1 includes a connecting hole 11, and the reversing component 3 includes a connector 32 that inserts into the connecting hole 11 and engages with the handle in a circumferential limiting fit. The circumferential limiting fit between the connecting hole 11 and the connector 32 ensures torque transmission between them. This design is simple, requiring no additional pins, connecting plates, or other connecting structures, reducing the number of parts and simplifying manufacturing. In practice, the cross-sectional shapes of the connecting hole 11 and the connector 32 can be square, triangular, or hexagonal, as long as they achieve the circumferential limiting fit. It should be noted that in practice, the handle 1 is also connected and fixed to the reversing component 3 by bolts. Both the connector 32 and the connecting hole 11 have corresponding threaded holes. Bolts pass through the threaded holes on the connector 32 of the reversing component 3 and are threaded into the threaded holes in the connecting hole 11 on the handle 1, thus connecting and fixing them together, effectively preventing loosening and ensuring the stability of their synchronous rotation.

[0030] Specifically, such as Figures 1-5 As shown, the elastic limiting component 5 of this invention includes a base 51 detachably connected to the lock housing 100, and a telescopic piece 53 connected to the base 51 via a spring 52, which can move up and down relative to the base 51. The base 51 provides mounting support for the spring 52 and the telescopic piece 53. The spring 52 provides upward elastic support for the telescopic piece 53, ensuring that it remains in contact with the reversing member 3 when no external force intervenes, thus achieving stable positioning of the reversing member 3 relative to the elastic limiting component 5 within the limiting engagement range. During reversing operation, the user presses the telescopic piece 53 into the base 51, compressing the spring 52. Once it reaches another limiting engagement range, the telescopic piece 53 springs out into the new limiting engagement range due to the elastic force of the spring 52. A movable groove 511 is provided on the base 51 for the telescopic piece 53 to extend and retract. The movable groove 511 ensures stable extension and retraction of the telescopic piece 53, serving as a guide. The movable groove 511 includes a mounting groove 5111 for mounting the spring 52.

[0031] The lower end of the telescopic piece 53 abuts against the spring 52. The telescopic piece 53 includes a stop 531 disposed at its lower end, and the movable groove 511 includes a blocking part 5112 for limiting engagement with the stop 531. Through the limiting engagement of the stop 531 and the blocking part 5112, the maximum stroke of the telescopic piece 53 out of the movable groove 511 can be effectively limited, preventing the telescopic piece 53 from excessively ejecting from the base 1 under the action of the spring 52, thus causing failure of engagement with the reversing member 3. In specific implementations, two stop 531s are symmetrically arranged on both sides of the bottom of the telescopic piece 53. Correspondingly, two blocking parts are also provided within the movable groove 511. This synchronous limiting engagement at both ends is relatively stable. In specific implementations, to ensure stable movement of the telescopic piece 53, two springs 52 are symmetrically arranged, and correspondingly, two limiting grooves 332 are also symmetrically arranged.

[0032] Furthermore, such as Figures 1-3 , Figure 5 As shown, the reversing component 3 also includes a reversing plate 33, which includes a second stop plate 331 and limiting grooves 332 symmetrically opened on both sides of the second stop plate 331. The telescopic plate 53 includes a third stop plate 532 disposed at its upper end, and the telescopic plate 53 is slidably connected to one of the limiting grooves 332 through the third stop plate 532. The limiting grooves 332 correspond to the two different limiting engagement intervals described in this case. When the user needs to change the rotation direction of the handle 1, he only needs to press down the telescopic plate 53 with his hand, and then rotate the handle 1 to drive the reversing component 3 to rotate, so that the telescopic plate 53 falls into the other limiting groove 332, and the rotation direction of the handle 1 is changed. The structure is simple and the operation is convenient. The limiting of the rotation stroke of the two is achieved through the cooperation of the third stop plate 532 and the second stop plate 331. In specific implementation, the commutator 33 has a circular outer periphery, and the limiting groove 332 is an arc-shaped groove recessed inward along the outer periphery of the commutator 33. The limiting groove 332 restricts the rotation angle of the commutator 33 to preferably ninety degrees, which is the best operating angle for opening the door with the handle, adapts to the user's operating habits, and is more user-friendly.

[0033] Reference Figures 1-3 , Figure 5As shown, further, a first connecting post 102 with internal threads is provided inside the lock housing 100, and a second connecting post 512 with an internally hollow interior is provided on the base 51. The inner diameter of the second connecting post 512 is larger than the outer diameter of the first connecting post 102. The second connecting post 512 is sleeved on the first connecting post 102, and a second screw 54 is provided inside the second connecting post 512 and threadedly connected to the first connecting post 102. In specific implementation, in order to ensure a stable connection between the base 1 and the lock housing 100, two second connecting posts 512 are symmetrically arranged on both sides of the base 1. Correspondingly, two first connecting posts 102 and two second screws 54 are also provided. This detachable connection structure between the base 1 and the lock housing 100 in this case forms an axial positioning by the second connecting post 512 sleeved on the first connecting post 102, and then achieves rigid fixation by the threaded connection of the second screw 54, constructing a double-post symmetrical support structure to ensure the stable installation of the base 51 on the lock housing 100. The user can replace the entire elastic limiting component 5 by removing the second screw 54. The threaded connection is simple in structure, easy to disassemble and assemble, low in cost, supports multiple disassembly and assembly, and can still maintain the original connection strength after disassembly and assembly.

[0034] Furthermore, continue to refer to Figures 1-3 , Figure 5 As shown, in some embodiments, a limiting pin 513 is installed in the movable groove 511, and a first through hole 533 is provided on the telescopic piece 53 for the limiting pin 513 to move within it. The limiting pin 513 is inserted into the first through hole 533. In specific implementation, the cooperation between the first through hole 533 and the limiting pin 512 plays a guiding and limiting role for the telescopic piece 53, effectively controlling the movement stroke of the telescopic piece 53, making operation convenient and improving the ease of reversing. At the same time, in conjunction with the mechanical limiting effect of the stop block 531 and the blocking part 5112, the axial travel and movement trajectory of the telescopic piece 53 are precisely controlled, further improving the stability of the telescopic piece 53's extension and retraction, and ensuring the reliable operation of the elastic limiting assembly 5.

[0035] like Figures 1-3 , Figure 5 As shown, further in this embodiment, the base 51 includes a detachable cover plate 55, and the limiting pin 513 has an internal hollow structure with internal threads. The cover plate 55 is threaded into the limiting pin 513 by a third screw 56, and a second through hole 551 is provided on the cover plate 55 for the third screw 56 to pass through. The detachable connection between the cover plate 55 and the base 51 makes disassembly and assembly convenient, facilitating the maintenance or replacement of components such as the spring 52 and the telescopic plate 53 inside the base 1.

[0036] Continue to refer to Figures 1-3 , Figure 5As shown, in this embodiment, the lock housing 100 also includes a rear cover 103, on which a third through hole 1031 is provided to expose the second baffle 331 and provide it with room to move. By exposing the second baffle 331 on the rear cover 103 of the lock housing 100, the reversing operation can be easily completed directly from the outside of the lock housing 100 without tools or disassembly, making the reversing simple and convenient.

[0037] As stated above, this case protects a door lock handle reversing structure, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A handle reversing structure for a door lock, comprising a lock housing (100), a handle (1) rotatably connected to the lock housing (100), a handle mounting hole (101) provided on the lock housing (100), one end of the handle (1) passing through the handle mounting hole (101) and extending into the lock housing (100), characterized in that: The handle (1) is connected to the lock housing (100) via a fixing component (2). One end of the handle (1) that extends into the lock housing (100) is connected to a reversing component (3) for changing the rotation direction of the handle (1). The reversing component (3) is circumferentially limited to the handle (1). A reset component (4) for driving the reversing component (3) to reset is provided between the reversing component (3) and the fixing component (2). The lower end of the reversing component (3) is provided with an elastic limiting component (5) for limiting and cooperating with the reversing component (3) to change the rotation direction of the reversing component (3). Two limiting cooperation intervals are provided between the elastic limiting component (5) and the reversing component (3). The elastic limiting component (5) is detachably connected to the lock housing (100).

2. The handle reversing structure of a door lock according to claim 1, characterized in that: The fixing component (2) includes a ball bearing (21) sleeved on the handle (1) and assembled on the outer wall of the lock housing (100) and a fixing piece (22) installed on the inner wall of the lock housing (100). The fixing piece (22) is provided with a first screw hole (221). The ball bearing (21) includes an outer ring (211). The outer ring (211) of the ball bearing (21) is provided with a second screw hole (2111). The handle mounting hole (101) includes a guide limiting hole (1011) opened on its outer periphery. A first screw (23) is installed in the first screw hole (221). The first screw (23) passes through the first screw hole (221) and the guide limiting hole (1011) in sequence and is then threaded into the second screw hole (2111).

3. The handle reversing structure of a door lock according to claim 2, characterized in that: The reset component (4) is a torsion spring, which is sleeved on the reversing component (3). The reversing component (3) includes a protrusion (31) that abuts against the torsion spring when rotating. The fixing plate (22) includes a first stop (222). The torsion spring includes two legs (41), and the first stop (222) is located between the two legs (41).

4. The handle reversing structure of a door lock according to claim 1, characterized in that: The handle (1) includes a connecting hole (11), and the reversing member (3) includes a connector (32) that is inserted into the connecting hole (11) and circumferentially limited by the handle.

5. The handle reversing structure of a door lock according to claim 1, characterized in that: The elastic limiting component (5) includes a base (51) detachably connected to the lock housing (100) and a telescopic piece (53) connected to the base (51) via a spring (52) and movable relative to the base (51) in vertical movement. The base (51) has a movable groove (511) for the telescopic piece (53) to move in and out. The movable groove (511) includes a mounting groove (5111) for mounting the spring (52). The lower end of the telescopic piece (53) abuts against the spring (52). The telescopic piece (53) includes a stop (531) disposed at its lower end. The movable groove (511) includes a blocking part (5112) for limiting and cooperating with the stop (531).

6. The handle reversing structure of a door lock according to claim 5, characterized in that: The commutator (3) further includes a commutator segment (33), the commutator segment (33) includes a second baffle (331) and limiting grooves (332) symmetrically opened on both sides of the second baffle (331), the telescopic segment (53) includes a third baffle (532) disposed at its upper end, and the telescopic segment (53) is slidably connected to one of the limiting grooves (332) through the third baffle (532).

7. The handle reversing structure of a door lock according to claim 5, characterized in that: The lock housing (100) is provided with a first connecting post (102) with internal threads, and the base (51) is provided with a second connecting post (512) with a hollow interior. The inner diameter of the second connecting post (512) is larger than the outer diameter of the first connecting post (102). The second connecting post (512) is sleeved on the first connecting post (102). A second screw (54) is provided inside the second connecting post (512) and threaded into the first connecting post (102).

8. The handle reversing structure of a door lock according to claim 5, characterized in that: A limiting pin (513) is installed in the movable groove (511), and a first through hole (533) is provided on the telescopic piece (53) for the limiting pin (513) to move in it. The limiting pin (513) is inserted into the first through hole (533).

9. The handle reversing structure of a door lock according to claim 8, characterized in that: The base (51) includes a detachable cover plate (55), the limiting pin (513) has an internal hollow structure, the limiting pin (513) has an internal thread, the cover plate (55) is threaded to the limiting pin (513) by a third screw (56), and the cover plate (55) has a second through hole (551) for the third screw (56) to pass through.

10. The handle reversing structure of a door lock according to claim 6, characterized in that: The lock case (100) also includes a rear cover (103), which has a third through hole (1031) for exposing the second baffle (331) and providing it with space to move.

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