Improved door lock handle and door lock

Abstract

The improved door lock handle comprises a handle body, an installation base, a torsion spring and a cover plate, a rotating shaft is arranged at one end of the handle body, the installation base comprises a bottom plate and a side wall arranged on the periphery of the bottom plate in a surrounding mode, a shaft hole is formed in the center of the bottom plate, and the torsion spring is arranged in the shaft hole. The rotating shaft is rotatably arranged in the shaft hole in a penetrating mode, the torsional spring is arranged along the inner circumferential face of the side wall in an attached mode, the cover plate is arranged on the periphery of the rotating shaft in a sleeving mode and connected with the torsional spring, and the rotating shaft is in torque transmission fit with the torsional spring through the cover plate. The door lock handle is reasonable in structure, the performance of the door lock handle can be guaranteed, meanwhile, occupation of the peripheral space of the rotating shaft is reduced, and miniaturization of a door lock is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of door locks, and more specifically, to an improved door lock handle and door lock. Background Technology

[0002] Existing door lock handles typically employ the following reset structure: a torsion spring is coaxially sleeved on the outer circumference of the handle's rotating shaft, and a linkage protrusion extending radially from the outer circumference of the rotating shaft, connected to the torsion spring. When the handle is rotated, the linkage protrusion causes the torsion spring to undergo elastic deformation. After the external force is removed, the torsion spring drives the rotating shaft to rotate in the opposite direction, thereby achieving automatic handle reset.

[0003] The following defects exist in this construction method: the setting of torsion spring and linkage structure directly leads to an increase in the overall radial dimension of the rotating shaft. The components used for linkage lock cylinder need to be moved outward accordingly, resulting in an increase in the space occupied. Furthermore, the lock cylinder assembly needs to be enlarged accordingly, making it difficult to compress the overall volume of the door lock and limiting its application on narrow door bodies. Utility Model Content

[0004] The purpose of this utility model is to provide an improved door lock handle and door lock, which has a reasonable structure and can reduce the space occupied on the outer periphery of the rotating shaft while ensuring the performance of the door lock handle, which is conducive to the miniaturization of the door lock.

[0005] An improved door lock handle includes a handle, a mounting base, a torsion spring, and a cover plate. One end of the handle is provided with a rotating shaft. The mounting base includes a base plate and a side wall surrounding the periphery of the base plate. The center of the base plate is provided with a shaft hole, through which the rotating shaft rotatably passes. The torsion spring is abutted against the inner circumferential surface of the side wall. The cover plate is sleeved on the outer circumference of the rotating shaft and connected to the torsion spring. The rotating shaft and the torsion spring form a torque transmission engagement through the cover plate.

[0006] In the above technical solution, by arranging the torsion spring along the inner circumference of the mounting base sidewall, the design constraint of the torsion spring being sleeved on the rotating shaft in the traditional structure is eliminated. This frees up space around the rotating shaft, reduces its radial dimension, and allows components linked to the lock cylinder to be arranged close to the center of the rotating shaft, which is beneficial for the overall miniaturization of the door lock. Using the cover plate as an intermediate transmission component to achieve torque transmission between the rotating shaft and the torsion spring ensures the rotation and reset of the handle, optimizing the spatial layout while maintaining handle performance.

[0007] Furthermore, it also includes a connecting rod, with connecting holes on both radial sides of the shaft hole. The connecting holes are located between the torsion spring and the shaft hole and are close to the shaft hole. The cover plate has an arc-shaped groove corresponding to the connecting hole, and one end of the connecting rod passes through the arc-shaped groove and connects to the connecting hole.

[0008] In the above technical solution, one end of the connecting rod connects to the connecting hole, and the other end can connect to the lock cylinder, thereby achieving a fixed connection between the handle and the lock cylinder. Positioning the connecting hole close to the shaft hole allows the connecting rod to be closer to the center of the rotating shaft, thus reducing the distance between the two connecting rods, resulting in a more rational layout and helping to reduce the size of the handle and lock cylinder. The cover plate has an arc-shaped groove corresponding to the connecting hole, which can prevent the connecting rod from being obstructed, allowing the cover plate to rotate relative to the connecting rod.

[0009] Furthermore, the two ends of the torsion spring are bent to form a snap-fit ​​portion, and the base plate is provided with two snap-fit ​​blocks. The two snap-fit ​​blocks are disposed opposite each other at the two ends of the shaft hole in the radial direction, and each snap-fit ​​portion abuts against the corresponding snap-fit ​​block.

[0010] In the above technical solution, the snap-fit ​​part abuts against the snap-fit ​​block, thereby limiting the two ends of the torsion spring and achieving reliable fixation of the torsion spring.

[0011] Furthermore, the cover plate is provided with a lever corresponding to the latch block. The lever abuts against the latching part. When the cover plate rotates, the lever drives the torsion spring to twist through the latching part.

[0012] In the above technical solution, the lever abuts against the latching part, allowing the cover plate to rotate and drive the torsion spring via the lever. Simultaneously, after the external force is removed, the latching part can be reset via the lever, allowing the cover plate and rotating shaft to return to their original positions. This structure also allows the handle to reset after bidirectional rotation, facilitating handle installation.

[0013] Furthermore, each of the card blocks is provided with limiting blocks on both sides of the base plate in the circumferential direction.

[0014] In the above technical solution, the limiting block forms a mechanical stop structure, which limits the circumferential movement range of the buckle part and controls the torsion angle of the torsion spring within the safe range of elastic deformation, thus avoiding plastic deformation of the torsion spring due to excessive torsion.

[0015] Furthermore, the circumferential surface of the rotating shaft is provided with at least one positioning groove, and the cover plate is provided with a boss that extends into the positioning groove.

[0016] In the above technical solution, the shapes of the positioning groove and the boss match to form a transmission connection, ensuring that the operating force of the handle is transmitted to the torsion spring.

[0017] Furthermore, there are two positioning grooves, which are located at both ends of the rotating shaft in the radial direction.

[0018] In the above technical solution, the symmetrical arrangement of the double positioning grooves enables the rotating shaft to form a symmetrical force structure when subjected to torque, thereby improving the structural stability of the rotating shaft.

[0019] A door lock comprising the aforementioned improved door lock handle.

[0020] Compared with existing technologies, the advantages of this invention are as follows: By arranging the torsion spring along the inner circumferential surface of the mounting base sidewall, the design constraint of the torsion spring being sleeved on the rotating shaft in traditional structures is eliminated, thereby freeing up space on the outer circumference of the rotating shaft, reducing the radial dimension of the rotating shaft, and allowing components linked to the lock cylinder to be arranged close to the center of the rotating shaft, which is beneficial for the miniaturization of the entire door lock. Using the cover plate as an intermediate transmission component to achieve torque transmission between the rotating shaft and the torsion spring ensures the rotation and reset of the handle, optimizing the spatial layout while maintaining handle performance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the improved door lock handle according to an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the structure behind the hidden cover plate in an embodiment of this utility model.

[0023] Figure 3 This is a schematic diagram of the cover plate according to an embodiment of the present utility model.

[0024] Figure 4 This is a schematic diagram of the structure after the connecting rod is installed according to an embodiment of the present utility model.

[0025] Explanation of icon numbers:

[0026] Handle 1, Rotating shaft 11, Positioning groove 111, Mounting base 2, Base plate 21, Side wall 22, Shaft hole 23, Connecting hole 24, Locking block 25, Limiting block 26, Torsion spring 3, Buckle part 31, Cover plate 4, Arc groove 41, Pulley 42, Boss 43, Connecting rod 5. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] Please refer to Figures 1 to 4In a preferred embodiment, the improved door lock handle of this utility model mainly includes a handle 1, a mounting base 2, a torsion spring 3, and a cover plate 4. The handle 1 has a rotating shaft 11 at one end. The mounting base 2 includes a base plate 21 and a side wall 22 surrounding the base plate 21. The base plate 21 has a shaft hole 23 at its center, through which the rotating shaft 11 rotatably passes. The torsion spring 3 is abutted against the inner circumference of the side wall 22. The cover plate 4 is fitted around the outer circumference of the rotating shaft 11 and connected to the torsion spring 3. The rotating shaft 11 and the torsion spring 3 form a torque transmission connection through the cover plate 4.

[0030] For example, the base plate 21 is circular, and the surrounding wall is formed as an annular structure around the periphery of the base plate 21. The diameter of the shaft hole 23 matches that of the rotating shaft 11, and the rotating shaft 11 passes through the shaft hole 23 and extends to the inner side of the surrounding wall. The diameter of the torsion spring 3 matches the inner diameter of the surrounding wall, so that the torsion spring 3 can abut against the inner circumferential surface of the side wall 22. This eliminates the design constraint of the torsion spring 3 being fitted onto the rotating shaft 11 in the traditional structure, frees up space around the outer periphery of the rotating shaft 11, reduces the radial dimension of the rotating shaft 11, and allows the components linked with the lock cylinder to be arranged close to the center of the rotating shaft 11, which is beneficial to the miniaturization of the entire door lock. The torque transmission between the rotating shaft 11 and the torsion spring 3 is realized by using the cover plate 4 as an intermediate transmission component, which can ensure the rotation and reset of the handle, and ensure the performance of the handle while optimizing the spatial layout.

[0031] The improved door lock handle of this embodiment also includes a connecting rod 5. Connecting holes 24 are provided on both radial sides of the shaft hole 23. The connecting holes 24 are located between the torsion spring 3 and the shaft hole 23 and are close to the shaft hole 23. The cover plate 4 has an arc-shaped groove 41 corresponding to the connecting holes 24. One end of the connecting rod 5 passes through the arc-shaped groove 41 and connects to the connecting hole 24. One end of the connecting rod 5 can be threaded to the connecting hole 24, and the other end can be connected to a lock cylinder (not shown), thereby achieving a fixed connection between the handle and the lock cylinder. Positioning the connecting holes 24 close to the shaft hole 23 allows the connecting rod 5 to be closer to the center of the rotating shaft 11, thus reducing the distance between the two connecting rods 5, resulting in a more reasonable layout and helping to reduce the volume of the handle and the lock cylinder. The arc-shaped groove 41 on the cover plate 4 corresponding to the connecting holes 24 provides clearance for the connecting rod 5, allowing the cover plate 4 to rotate relative to the connecting rod 5.

[0032] The two ends of the torsion spring 3 are bent to form a latching part 31. The base plate 21 is provided with two latching blocks 25, which are arranged opposite each other at the two ends of the shaft hole 23 in the radial direction. Each latching part 31 abuts against the corresponding latching block 25. The latching part 31 abuts against the latching block 25, thereby limiting the two ends of the torsion spring 3 and realizing the reliable fixation of the torsion spring 3.

[0033] The cover plate 4 is equipped with a lever 42 corresponding to the latch 25. The lever 42 abuts against the latching part 31. When the cover plate 4 rotates, the lever 42 drives the torsion spring 3 to rotate through the latching part 31. The lever 42 abuts against the latching part 31, so that when the cover plate 4 rotates, it can drive the torsion spring 3 through the lever 42. At the same time, after the external force is removed, the latching part 31 can drive the cover plate 4 and the rotating shaft 11 to reset through the lever 42. This structure can also achieve reset after the handle is rotated in both directions, which is convenient for the installation of the handle.

[0034] Each locking block 25 has a limiting block 26 on both sides of the base plate 21 in the circumferential direction. For example, the limiting block 26 is located on the base plate 21 and can be formed with the same structure as the locking block 25. The limiting block 26 can form a mechanical stop structure, which controls the torsion angle of the torsion spring 3 within the safe range of elastic deformation by limiting the circumferential movement range of the latching part 31, and avoids plastic deformation of the torsion spring 3 due to excessive torsion. The locking block 25 and the limiting block 26 cooperate to fix and limit the torsion spring 3, prevent the torsion spring 3 from deviating when it is compressed under force or the coils of the torsion spring 3 from getting tangled together, and at the same time avoid interference with the connecting rod 5.

[0035] The circumferential surface of the rotating shaft 11 is provided with at least one positioning groove 111, and the cover plate 4 is provided with a boss 43, which extends into the positioning groove 111. The positioning groove 111 and the boss 43 are shaped to form a transmission connection, ensuring that the operating force of the handle is transmitted to the torsion spring 3. In this embodiment, there are two positioning grooves 111, which are located at both ends of the radial direction of the rotating shaft 11. The symmetrical arrangement of the two positioning grooves 111 makes the rotating shaft 11 form a symmetrical force structure when subjected to torque, thereby improving the structural stability of the rotating shaft 11.

[0036] This utility model also provides a door lock, including the improved door lock handle described above.

[0037] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved door lock handle, characterized in that, The device includes a handle, a mounting base, a torsion spring, and a cover plate. One end of the handle is provided with a rotating shaft. The mounting base includes a base plate and a side wall surrounding the periphery of the base plate. The center of the base plate is provided with a shaft hole, through which the rotating shaft rotatably passes. The torsion spring is abutted against the inner circumference of the side wall. The cover plate is sleeved on the outer circumference of the rotating shaft and connected to the torsion spring. The rotating shaft and the torsion spring form a torque transmission engagement through the cover plate.

2. The improved door lock handle according to claim 1, characterized in that, It also includes a connecting rod, and connecting holes are provided on both sides of the shaft hole in the radial direction. The connecting holes are located between the torsion spring and the shaft hole and close to the shaft hole. The cover plate is provided with an arc-shaped groove corresponding to the connecting hole. One end of the connecting rod passes through the arc-shaped groove and is connected to the connecting hole.

3. The improved door lock handle according to claim 1, characterized in that, The two ends of the torsion spring are bent to form a snap-fit ​​part. The base plate is provided with two snap-fit ​​blocks, which are disposed opposite each other at the two ends of the shaft hole in the radial direction. Each snap-fit ​​part abuts against the corresponding snap-fit ​​block.

4. The improved door lock handle according to claim 3, characterized in that, The cover plate is provided with a lever corresponding to the latch block. The lever abuts against the latching part. When the cover plate rotates, the lever drives the torsion spring to twist through the latching part.

5. The improved door lock handle according to claim 3, characterized in that, Each of the card blocks is provided with limiting blocks on both sides of the base plate circumferentially.

6. The improved door lock handle according to claim 1, characterized in that, The circumferential surface of the rotating shaft is provided with at least one positioning groove, and the cover plate is provided with a boss that extends into the positioning groove.

7. The improved door lock handle according to claim 6, characterized in that, There are two positioning grooves, which are located at both ends of the radial direction of the rotating shaft.

8. A door lock, characterized in that, Including the improved door lock handle as described in any one of claims 1 to 7.

Images