CN219472556U

CN219472556U - Self-locking hinge mechanism

Info

Publication number: CN219472556U
Application number: CN202223241831.7U
Authority: CN
Inventors: 朱长仙
Original assignee: Shenzhen Zhigaoxiang Technology Development Co ltd
Current assignee: Shenzhen Zhigaoxiang Technology Development Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-08-04
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a self-locking hinge mechanism which comprises a hinge seat, an inner shaft sleeve, a hinge shaft and a locking shaft, wherein a first outer shaft sleeve and a second outer shaft sleeve are formed on the hinge seat, the inner shaft sleeve is positioned between the first outer shaft sleeve and the second outer shaft sleeve and is coaxially arranged, the locking shaft penetrates through the first outer shaft sleeve and is inserted into the inner shaft sleeve, an inner flange is formed on the inner wall of the inner shaft sleeve, a first end face tooth is formed on one side of the inner flange, facing the locking shaft, of the inner flange, a second end face tooth meshed with the first end face tooth is formed at the end part of the locking shaft, the hinge shaft sequentially penetrates through the second outer shaft sleeve and the inner flange and is fixedly connected with the locking shaft, the hinge shaft can only axially slide relative to the second outer shaft sleeve, a spring is sleeved on the hinge shaft, and the spring is abutted between the inner flange and the hinge shaft. Compared with the prior art, the utility model has the automatic locking function, and can release locking only by pressing operation, thereby better meeting the application requirements.

Description

Self-locking hinge mechanism

Technical Field

The utility model relates to a hinge mechanism, in particular to a self-locking hinge mechanism.

Background

In the prior art, many products requiring a turnover function involve a hinge mechanism, for example, a wireless charger, please refer to a chinese patent publication with publication number CN215580556U, entitled "a foldable wireless charger", in which:

the wireless magnetic charger 3 is rotatably assembled with the bracket 2 through the first damping shaft 4, and the base 1 is rotatably assembled with the bracket 2 through the second damping shaft 5. The wireless magnetic charger 3 can be conveniently and randomly adjusted by a user according to requirements, and has a positioning function.

Referring to fig. 3 of the specification of the publication, such a mechanism realizes the hinging function between the two mechanisms and the positioning function after overturning by setting the damping shaft, but the damping shaft generally depends on friction force to realize the damping function, so that the mechanism is only suitable for occasions with smaller supporting pressure and no external force interference, and when the pressure born by wireless charging is larger or applied to occasions such as vehicles, the internal stress of the damping shaft is easily overcome under the action of larger external force, thereby leading to the failure of the shaft positioning function, and therefore, the application requirement cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a hinge mechanism with an automatic locking function and convenient clutch operation aiming at the defects in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme.

The utility model provides a self-locking hinge mechanism, its is including articulated seat, interior axle sleeve, articulated shaft and locking axle, be formed with first outer axle sleeve and second outer axle sleeve on the articulated seat, interior axle sleeve is located first outer axle sleeve with between the outer axle sleeve of second and the coaxial setting of three, the locking axle passes first outer axle sleeve and insert and locate in the interior axle sleeve, interior axle sleeve's inner wall is formed with the inward flange, the inward flange orientation is formed with first terminal surface tooth in one side of locking axle, the tip of locking axle be formed with first terminal surface tooth intermeshed second terminal surface tooth, the articulated shaft pass in proper order second outer axle sleeve with inward flange and fixed connection in the locking axle, just the articulated shaft can only relative second outer axle sleeve axial slip, the epaxial cover of articulated is equipped with the spring, the spring butt in between the inward flange with the articulated shaft.

Preferably, at least one guide block is formed on the inner wall of the second outer shaft sleeve, at least one guide groove is formed on the outer side wall of the hinge shaft, and the guide block is arranged in the guide groove and is in sliding fit with the guide groove.

Preferably, a step part is formed at one end of the hinge shaft away from the locking shaft, and the guide groove is formed on the step part.

Preferably, a pressing tip is formed at an end of the step portion, and the guide groove extends in a direction of the pressing tip.

Preferably, a preset distance is formed between the guide block and the pressing end.

Preferably, 3 guide blocks are uniformly distributed on the inner wall of the second outer shaft sleeve, and 6 guide grooves are uniformly distributed on the step part.

Preferably, the spring is abutted between the inner flange and the step portion.

Preferably, a step hole is formed at one end of the locking shaft far away from the hinge shaft, a screw is arranged in the step hole in a penetrating mode, and the screw is screwed and fixed with the end portion of the hinge shaft.

Preferably, an end cap is inserted into the stepped hole.

Preferably, the locking shaft is hollow, a limiting block is formed on the inner wall of the locking shaft, a limiting groove is formed on one end, close to the locking shaft, of the hinge shaft, the hinge shaft is inserted into the locking shaft, and the limiting block is clamped in the limiting groove.

In the self-locking hinge mechanism disclosed by the utility model, the spring is utilized to apply outward elastic stress to the hinge shaft, and the second end face teeth are meshed with the first end face teeth, so that the locking shaft is fixedly connected with the hinge shaft, and the hinge shaft can only axially slide relative to the second outer shaft sleeve, thereby limiting the relative position of the inner shaft sleeve and the hinge seat, and preventing the inner shaft sleeve and the hinge seat from rotating relative to each other. When the hinge shaft is pressed by external force, the hinge shaft overcomes the elasticity of the spring, and the second end face teeth are separated from the first end face teeth, so that the inner shaft sleeve can rotate freely relative to the hinge seat, and the clutch function is realized. Compared with the prior art, the utility model has the automatic locking function, and can release locking only by pressing operation, thereby better meeting the application requirements.

Drawings

FIG. 1 is a perspective view of a self-locking hinge mechanism of the present utility model;

FIG. 2 is a partially exploded view of the self-locking hinge mechanism of the present utility model;

FIG. 3 is an exploded view of the self-locking hinge mechanism of the present utility model;

FIG. 4 is an exploded view of a self-locking hinge mechanism of the present utility model;

FIG. 5 is a block diagram of the inner sleeve;

FIG. 6 is a cross-sectional view of a self-locking hinge mechanism of the present utility model;

fig. 7 is a block diagram of a preferred application of the self-locking hinge mechanism of the present utility model.

Detailed Description

The utility model is described in more detail below with reference to the drawings and examples.

The utility model discloses a self-locking hinge mechanism, which is shown in fig. 1 to 7, and comprises a hinge seat 1, an inner shaft sleeve 2, a hinge shaft 3 and a locking shaft 4, wherein a first outer shaft sleeve 5 and a second outer shaft sleeve 6 are formed on the hinge seat 1, the inner shaft sleeve 2 is positioned between the first outer shaft sleeve 5 and the second outer shaft sleeve 6 and coaxially arranged between the first outer shaft sleeve 5 and the second outer shaft sleeve 6, the locking shaft 4 penetrates through the first outer shaft sleeve 5 and is inserted into the inner shaft sleeve 2, an inner flange 20 is formed on the inner wall of the inner shaft sleeve 2, a first end face tooth 21 is formed on one side of the inner flange 20 facing the locking shaft 4, a second end face tooth 40 meshed with the first end face tooth 21 is formed on the end part of the locking shaft 4, the hinge shaft 3 sequentially penetrates through the second outer shaft sleeve 6 and the inner flange 20 and is fixedly connected with the locking shaft 4, the hinge shaft 3 can only axially slide relative to the second outer shaft sleeve 6, a spring 7 is sleeved on the hinge shaft 3, and the spring 7 abuts against the hinge shaft 3.

In the above structure, the spring 7 applies an outward elastic stress to the hinge shaft 3, and the second end teeth 40 and the first end teeth 21 are meshed with each other, so that the locking shaft 4 is fixedly connected with the hinge shaft 3, and the hinge shaft 3 can only axially slide relative to the second outer shaft sleeve 6, thereby limiting the relative positions of the inner shaft sleeve 2 and the hinge seat 1, and preventing the two from rotating relative to each other. When an external force presses the hinge shaft 3 in the direction shown in fig. 1 and 6, the hinge shaft 3 overcomes the elastic force of the spring 7 and separates the second end teeth 40 from the first end teeth 21, so that the inner hub 2 can freely rotate relative to the hinge base 1, thereby realizing a clutch function. Compared with the prior art, the utility model has the automatic locking function, and can release locking only by pressing operation, thereby better meeting the application requirements.

As shown in fig. 3 and 4, in order to enable the hinge shaft 3 to slide axially only with respect to the second outer sleeve 6, in this embodiment, at least one guide block 60 is formed on the inner wall of the second outer sleeve 6, at least one guide groove 30 is formed on the outer side wall of the hinge shaft 3, and the guide block 60 is disposed in the guide groove 30 and is in sliding fit with the guide groove 30.

Further, a stepped portion 32 is formed at an end of the hinge shaft 3 remote from the locking shaft 4, and the guide groove 30 is opened on the stepped portion 32.

In order to facilitate pressing the hinge shaft 3, in the present embodiment, a pressing tip 31 is formed at an end of the step portion 32, and the guide groove 30 extends in a direction of the pressing tip 31.

In this embodiment, a predetermined distance is formed between the guide block 60 and the pressing head 31. The preset interval provides a movement space for the axial sliding of the hinge shaft 3.

As a preferred configuration, 3 guide blocks 60 are uniformly distributed on the inner wall of the second outer sleeve 6, and 6 guide grooves 30 are uniformly distributed on the stepped portion 32.

In order to better interact with the spring 7, in the present embodiment the spring 7 abuts between the inner flange 20 and the step 32.

In this embodiment, the locking shaft 4 and the hinge shaft 3 are preferably fixedly connected by a screw, specifically, a stepped hole 41 is formed at one end of the locking shaft 4 away from the hinge shaft 3, a screw 42 is threaded into the stepped hole 41, and the screw 42 is screwed and fixed with the end of the hinge shaft 3.

In order to block the screw 42, in the present embodiment, an end cap 43 is inserted into the stepped hole 41.

Further, the locking shaft 4 is hollow, a limiting block 44 is formed on the inner wall of the locking shaft 4, a limiting groove 33 is formed on one end of the hinge shaft 3, which is close to the locking shaft 4, the hinge shaft 3 is inserted into the locking shaft 4, and the limiting block 44 is clamped in the limiting groove 33.

In the above configuration, the relative positions of the lock shaft 4 and the hinge shaft 3 can be restricted by the engagement of the stopper 44 and the stopper groove 33, so that the occurrence of rotational misalignment between the two can be avoided.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a self-locking hinge mechanism, its characterized in that, including articulated seat (1), interior axle sleeve (2), articulated shaft (3) and locking axle (4), be formed with first outer axle sleeve (5) and second outer axle sleeve (6) on articulated seat (1), interior axle sleeve (2) are located first outer axle sleeve (5) with between second outer axle sleeve (6) and the coaxial setting of three, locking axle (4) pass first outer axle sleeve (5) and insert locate in interior axle sleeve (2), the inner wall of interior axle sleeve (2) is formed with interior flange (20), interior flange (20) orientation one side of locking axle (4) is formed with first end face tooth (21), the tip of locking axle (4) be formed with first end face tooth (21) intermeshing's second end face tooth (40), articulated shaft (3) pass in proper order second outer axle sleeve (6) with interior flange (20) and fixed connection in interior flange (3) in interior flange (20), and articulated shaft (3) can only be equipped with in between articulated shaft (3) and the relative axle sleeve (7).

2. Self-locking hinge mechanism according to claim 1, characterized in that the inner wall of the second outer sleeve (6) is formed with at least one guide block (60), the outer lateral wall of the hinge shaft (3) is formed with at least one guide groove (30), the guide block (60) is arranged in the guide groove (30) and the two are in sliding fit.

3. Self-locking hinge mechanism according to claim 2, characterized in that the end of the hinge shaft (3) remote from the locking shaft (4) is formed with a step (32), the guide groove (30) being open on the step (32).

4. A self-locking hinge mechanism according to claim 3, characterized in that the end of the step portion (32) is formed with a pressing tip (31), and the guide groove (30) extends in the direction of the pressing tip (31).

5. Self-locking hinge mechanism according to claim 4, characterized in that a predetermined distance is formed between the guide block (60) and the pressing head (31).

6. A self locking hinge mechanism according to claim 3, characterized in that the inner wall of the second outer sleeve (6) is evenly distributed with 3 guide blocks (60), and the step (32) is evenly distributed with 6 guide grooves (30).

7. A self-locking hinge mechanism according to claim 3, characterized in that the spring (7) abuts between the inner flange (20) and the step (32).

8. The self-locking hinge mechanism according to claim 1, wherein a stepped hole (41) is formed at one end of the locking shaft (4) away from the hinge shaft (3), a screw (42) is threaded into the stepped hole (41), and the screw (42) is screwed and fixed with the end of the hinge shaft (3).

9. Self-locking hinge mechanism according to claim 8, characterized in that the stepped hole (41) is internally provided with an end cap (43).

10. The self-locking hinge mechanism according to claim 1, wherein the locking shaft (4) is hollow, a limiting block (44) is formed on the inner wall of the locking shaft (4), a limiting groove (33) is formed on one end, close to the locking shaft (4), of the hinge shaft (3), the hinge shaft (3) is inserted into the locking shaft (4), and the limiting block (44) is clamped in the limiting groove (33).