A lever handle accurate positioning structure

Abstract

The utility model relates to handle knob wheel technical field, especially a handle knob wheel accurate positioning structure, including door lock edition, the one side of door lock edition is equipped with the knob wheel positioning slot, the inner wall rotation of knob wheel positioning slot is connected with the knob wheel. The utility model's advantage lies in: through the V-shaped projection of positioning leaf spring and V-shaped positioning slot pressure, can realize the primary positioning, and through the elastic pressure, can exert the damping effect of rotation, simultaneously through the wave son location screw wave son ball and the inner wall pressure of positioning hole, realize further positioning restriction, through the full pressure contact of spherical surface and positioning hole, realize stable positioning, eliminate the virtual position shaking problem that produces when positioning after knob wheel rotation, through the elastic support of wave son location screw elastic support pad, can realize the elastic retreat of wave son, so as to release positioning, and through the rolling of wave son itself, can guide the rolling of wave son when knob wheel rotates, realize the smoothness of rotation positioning release, avoid the jam.

Description

Technical Field

[0001] This utility model relates to the field of lever wheel technology, and in particular to a precise positioning structure for lever wheels. Background Technology

[0002] In daily life, office, and industrial settings, door locks are core components ensuring spatial security and privacy. Their structural stability and user experience directly determine users' overall evaluation of the product. The handle, as the human-machine interface of the door lock, is the core component for user operation. When a hand turns the handle, it simultaneously rotates a dial inside the lock plate. This dial, in conjunction with the internal transmission structure of the lock body, drives the bolt to extend or retract to complete the locking or unlocking action. Therefore, the positioning accuracy of the dial directly affects the stability of the handle after operation and is a crucial guarantee for the normal operation of the door lock's transmission system.

[0003] Existing door lock structures have a significant design flaw: when the dial rotates and attempts to position itself, it commonly exhibits a play (i.e., wobble). This problem stems from the current positioning method, such as positioning using a single elastic element. This method fails to achieve precise engagement between the dial and its surrounding components, resulting in a slight play remaining after positioning. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a precise positioning structure for the lever wheel, which effectively solves the deficiencies of the prior art.

[0005] The purpose of this utility model is achieved through the following technical solution: a precise positioning structure for a lever wheel, including a door lock plate, a lever positioning groove is provided on one side of the door lock plate, a lever is rotatably connected to the inner wall of the lever positioning groove, and a ball positioning screw is threadedly connected to both sides of the door lock plate at positions corresponding to the center of the lever positioning groove. Symmetrically arranged positioning leaf springs are inserted into the upper and lower sides of the lever positioning groove. The lever includes a lever body, and V-shaped positioning grooves 23 are provided on both the upper and lower sides of the outer wall of the lever body. Positioning holes are provided in the middle of both the left and right sides of the outer wall of the lever body. The ball positioning screw has a ball that can elastically retract backward. The middle of the positioning leaf spring is provided with a V-shaped protrusion corresponding to the V-shaped positioning groove 23. The position of the ball of the ball positioning screw corresponds to the position of the positioning hole.

[0006] Preferably, in any of the above embodiments, the wave-positioning screw includes a screw body, a guide groove is provided at the center of one end of the screw body, a wave ball seat is slidably connected to the inner wall of the guide groove, a rolling wave is provided on the inner wall of the wave ball seat, and an elastic support pad is provided between the wave ball seat and the inner wall of the guide groove.

[0007] The technical effect achieved by adopting the above solution is that the elastic support pad of the ball positioning screw can achieve elastic retraction of the ball to release the positioning. Moreover, through the rolling of the ball itself, the ball can be guided to roll when the dial rotates, thus achieving smooth rotational positioning release.

[0008] Preferably, in any of the above embodiments, the portion of the wavelet protruding from the outer wall of the wavelet seat is fitted with the inner wall of the positioning hole, and the V-shaped protrusion in the middle of the positioning leaf spring is fitted with the inner wall of the V-shaped positioning groove 23.

[0009] The technical effect achieved by adopting the above solution is that the V-shaped protrusion and the V-shaped positioning groove 23 can be fitted together to achieve inclined guidance so that the V-shaped protrusion in the middle of the positioning leaf spring can be dislodged from the V-shaped positioning groove 23, and the rotational damping effect can be applied through elastic pressure.

[0010] Preferably, in any of the above embodiments, the outer wall of the dial positioning groove is fixedly connected to a sealing cover plate by countersunk screws, the sealing cover plate can completely cover the dial positioning groove, and the center of the sealing cover plate has a through hole corresponding to the center of the inner wall of the dial.

[0011] The technical effect achieved by adopting the above solution is that the bolt connection of the encapsulation cover can improve protection and facilitate disassembly and maintenance.

[0012] Preferably, in any of the above embodiments, a square steel connecting rod is inserted into the inner wall of the dial, one end of the square steel connecting rod passes through the outer side of the door lock plate, and a door handle is fixedly connected to the end of the square steel connecting rod that passes through the door lock plate.

[0013] The technical effect achieved by adopting the above solution is that by connecting the door handle and the dial wheel with the square steel connecting rod, the door handle can drive the dial wheel to rotate.

[0014] This utility model has the following advantages: 1. The precise positioning structure of this lever wheel achieves initial positioning by pressing the V-shaped protrusion of the positioning leaf spring against the V-shaped positioning groove. Furthermore, the elastic pressure applies a damping effect to the rotation. At the same time, the ball of the ball positioning screw presses against the inner wall of the positioning hole to achieve further positioning restriction. Through the full pressing contact between the spherical surface and the positioning hole, stable positioning is achieved, eliminating the problem of play and wobbling that occurs when the lever wheel is rotated.

[0015] 2. The precise positioning structure of this lever dial uses the elastic support pad of the ball positioning screw to allow the ball to retract elastically, so as to release the positioning. Moreover, through the rolling of the ball itself, the guide rolling of the ball can be used when the dial is rotated, so as to achieve smooth rotation positioning release and avoid jamming. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a schematic diagram of the combined structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure at point AA.

[0017] In the diagram: 1-Door lock plate, 2-Dial, 21-Dial body, 22-Positioning hole, 23-V-shaped positioning groove, 3-Square steel connecting rod, 4-Encapsulation cover plate, 5-Balloon positioning screw, 51-Screw body, 52-Guide groove, 53-Balloon ball seat, 54-Balloon, 55-Elastic support pad, 6-Door handle, 7-Dial positioning groove, 8-Positioning leaf spring. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0019] like Figures 1 to 4 As shown, a precise positioning structure for a lever dial includes a door lock plate 1. A dial positioning groove 7 is provided on one side of the door lock plate 1. A dial 2 is rotatably connected to the inner wall of the dial positioning groove 7. A ball positioning screw 5 is threadedly connected to both sides of the door lock plate 1 at positions corresponding to the center of the dial positioning groove 7. A symmetrically arranged positioning spring 8 is inserted into both the upper and lower sides of the dial positioning groove 7. The dial 2 includes a dial body 21. A V-shaped positioning groove 23 is provided on both the upper and lower sides of the outer wall of the dial body 21. A positioning hole 22 is provided in the middle of both the left and right sides of the outer wall of the dial body 21. The ball positioning screw 5 has a ball that can elastically retract backward. The middle part of the positioning spring 8 is set with a V-shaped protrusion corresponding to the V-shaped positioning groove 23. The position of the ball of the ball positioning screw 5 corresponds to the position of the positioning hole 22.

[0020] As an optional technical solution of this utility model: the ball positioning screw 5 includes a screw body 51, a guide groove 52 is provided at the center of one end of the screw body 51, a ball seat 53 is slidably connected to the inner wall of the guide groove 52, a rolling ball 54 is provided on the inner wall of the ball seat 53, and an elastic support pad 55 is provided between the ball seat 53 and the inner wall of the guide groove 52. Through the elastic support pad 55, the ball 54 can be elastically retracted to release the positioning. Moreover, through the rolling of the ball 54 itself, it can be guided to roll when the dial 2 rotates, so as to achieve smooth rotation positioning release.

[0021] As an optional technical solution of this utility model: the part of the ball bearing 54 protruding from the outer wall of the ball bearing seat 53 fits against the inner wall of the positioning hole 22, and the V-shaped protrusion in the middle of the positioning leaf spring 8 fits against the inner wall of the V-shaped positioning groove 23. Through the fit between the V-shaped protrusion and the V-shaped positioning groove 23, the inclined surface can be guided so that the V-shaped protrusion in the middle of the positioning leaf spring 8 can disengage from the V-shaped positioning groove 23. Moreover, through elastic pressure, the rotational damping effect can be applied.

[0022] As an optional technical solution of this utility model: the outer wall of the dial positioning groove 7 is fixedly connected to the encapsulation cover plate 4 by countersunk screws. The encapsulation cover plate 4 can completely cover the dial positioning groove 7. The center of the encapsulation cover plate 4 has a through hole corresponding to the center of the inner wall of the dial 2. The bolt connection of the encapsulation cover plate 4 can improve protection and facilitate disassembly and maintenance.

[0023] As an optional technical solution of this utility model: a square steel connecting rod 3 is inserted into the inner wall of the dial 2. One end of the square steel connecting rod 3 passes through the outer side of the door lock plate 1. The end of the square steel connecting rod 3 that passes through the door lock plate 1 is fixedly connected to the door handle 6. The door handle 6 and the dial 2 are connected by the square steel connecting rod 3, so that the door handle 6 can drive the dial 2 to rotate.

[0024] During the operation of this utility model: 1) By pressing the V-shaped protrusion of the positioning leaf spring 8 against the V-shaped positioning groove 23, preliminary positioning can be achieved, and the rotational damping effect can be applied through elastic pressure. 2) Further positioning is achieved by pressing the ball of the ball positioning screw 5 against the inner wall of the positioning hole 22. Stable positioning is achieved through the full pressing contact between the ball surface and the positioning hole 22.

[0025] In summary, this invention achieves initial positioning by pressing the V-shaped protrusion of the positioning spring 8 against the V-shaped positioning groove 23. Furthermore, the elastic pressure applies a damping effect to the rotation. Simultaneously, the ball of the ball positioning screw 5 presses against the inner wall of the positioning hole 22, further restricting the positioning. The full pressing contact between the ball surface and the positioning hole 22 ensures stable positioning, eliminating the problem of misalignment and wobbling during positioning after the dial wheel 2 rotates. The elastic support pad 55 of the ball positioning screw 5 allows the ball 54 to elastically retract, releasing the positioning. Moreover, the rolling of the ball 54 itself, guided by the rotation of the dial wheel 2, ensures smooth release of the rotational positioning, preventing jamming.

[0026] 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. A precise positioning structure for a lever dial, characterized in that: The system includes a door lock plate (1), a dial positioning groove (7) is provided on one side of the door lock plate (1), a dial (2) is rotatably connected to the inner wall of the dial positioning groove (7), a ball positioning screw (5) is threaded on both sides of the door lock plate (1) corresponding to the center of the dial positioning groove (7), a symmetrically arranged positioning spring (8) is inserted on both the upper and lower sides of the dial positioning groove (7), the dial (2) includes a dial body (21), a V-shaped positioning groove (23) is provided on both the upper and lower sides of the outer wall of the dial body (21), a positioning hole (22) is provided in the middle of both the left and right sides of the outer wall of the dial body (21), the ball positioning screw (5) has a ball that can elastically retract backward, the middle of the positioning spring (8) is set as a V-shaped protrusion and corresponds to the V-shaped positioning groove (23), and the position of the ball of the ball positioning screw (5) corresponds to the position of the positioning hole (22).

2. The precise positioning structure for a lever wheel according to claim 1, characterized in that: The wave positioning screw (5) includes a screw body (51), a guide groove (52) is provided at the center of one end of the screw body (51), a wave ball seat (53) is slidably connected to the inner wall of the guide groove (52), a rolling wave (54) is provided on the inner wall of the wave ball seat (53), and an elastic support pad (55) is provided between the wave ball seat (53) and the inner wall of the guide groove (52).

3. The precise positioning structure for a lever wheel according to claim 1, characterized in that: The portion of the wavelet (54) protruding from the outer wall of the wavelet ball seat (53) fits against the inner wall of the positioning hole (22), and the V-shaped protrusion in the middle of the positioning leaf spring (8) fits against the inner wall of the V-shaped positioning groove (23).

4. The precise positioning structure for a lever wheel according to claim 1, characterized in that: The outer wall of the dial positioning groove (7) is fixedly connected to a sealing cover plate (4) by countersunk screws. The sealing cover plate (4) can completely cover the dial positioning groove (7). The center of the sealing cover plate (4) has a through hole corresponding to the center of the inner wall of the dial (2).

5. The precise positioning structure for a lever wheel according to claim 1, characterized in that: A square steel connecting rod (3) is inserted into the inner wall of the dial (2). One end of the square steel connecting rod (3) passes through the outer side of the door lock plate (1), and a door handle (6) is fixedly connected to the end of the square steel connecting rod (3) that passes through the door lock plate (1).

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