CN218958708U

CN218958708U - Anti-rotation motor

Info

Publication number: CN218958708U
Application number: CN202223593086.2U
Authority: CN
Inventors: 鲍方
Original assignee: CHANGZHOU WUQI AUTO ELECTRIC CO LTD
Current assignee: CHANGZHOU WUQI AUTO ELECTRIC CO LTD
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-02
Anticipated expiration: 2032-12-31

Abstract

The utility model provides an anti-rotation motor, which comprises a shell, wherein a rotating shaft and a sun gear are arranged in the shell, and are connected through a coupler; the torsion spring is arranged in the coupler, and the spiral direction of the torsion spring is the same as the forward rotation direction of the rotating shaft; when the rotating shaft rotates positively, the coupler drives the torsion spring to shrink and separate from the shell; when the sun gear is stressed and reversed, the coupler drives the torsion spring to open and lean against the shell. The torsion spring is opened to lean against the shell, and presses the shell to generate friction force, so that the motor is prevented from being reversed by external force; the larger the reverse external force applied to the sun gear is, the larger the friction force between the torsion spring and the shell is, so that the motor is ensured not to generate reverse rotation. Compared with the traditional electromagnetic sheet or friction plate, the torsion spring has the advantages of simple structure, high stability and difficult damage.

Description

Anti-rotation motor

Technical Field

The utility model relates to the technical field of motors, in particular to an anti-rotation motor.

Background

There is a kind of gear motor, its tail end is the motor, the head end is the planetary reducer, the sun gear of the drive reducer of the spindle drive of the motor.

When the output end of the speed reducer is subjected to external force, the motor is easy to rotate, so that an electromagnetic sheet or a friction sheet is generally arranged, and the rotating shaft is fixed or loosened through power failure.

Because the wear of the electromagnetic sheet or the friction sheet is relatively large, the friction sheet is easy to damage. The replacement of the electromagnetic sheet or the friction sheet also involves the disassembly of the whole machine, and the operation is complex and tedious.

Therefore, how to overcome the above-mentioned drawbacks is a problem to be solved by the person skilled in the art.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model discloses an anti-rotation motor.

The utility model provides an anti-rotation motor, which comprises a shell, wherein a rotating shaft and a sun gear are arranged in the shell, and are connected through a coupler;

the torsion spring is arranged in the coupler, and the spiral direction of the torsion spring is the same as the forward rotation direction of the rotating shaft;

when the rotating shaft rotates positively, the coupler drives the torsion spring to shrink and separate from the shell;

when the sun gear is stressed and reversed, the coupler drives the torsion spring to open and lean against the shell.

The torsion spring is opened to lean against the shell, and presses the shell to generate friction force, so that the motor is prevented from being reversed by external force; the larger the reverse external force applied to the sun gear is, the larger the friction force between the torsion spring and the shell is, so that the motor is ensured not to generate reverse rotation. Compared with the traditional electromagnetic sheet or friction plate, the torsion spring has the advantages of simple structure, high stability and difficult damage.

The specific structure of the coupler is as follows: the coupler consists of an input end coupler and an output end coupler; the rotating shaft is connected with the input end coupler; the sun gear is connected with the output end coupler.

The torsion spring has the specific structure that: the two ends of the torsion spring are respectively provided with a first driving rod and a second driving rod which are bent inwards;

the input end coupler is provided with a first driving block for driving the first driving rod;

the output end coupler is provided with a second driving block for driving the second driving rod.

When the torsion spring is stressed and contracted, the position is unstable, and based on the unstable position, the further design is that: the first driving block is provided with a first clamping groove for clamping the first driving rod.

When the torsion spring is stressed to open, the position is unstable, and based on the position, the further design is that: the second driving block is provided with a second clamping groove for clamping the second driving rod.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a front cross-sectional view of the present utility model;

FIG. 2 is a front view of the coupling and torsion spring;

FIG. 3 is a cross-sectional view of A-A of FIG. 2;

FIG. 4 is an exploded view of the coupling and torsion spring;

in the figure: 1. a housing; 2. a rotating shaft; 3. a sun gear; 4. a torsion spring; 5. an input end coupling; 6. an output end coupling; 41. a first driving lever; 42. a second driving lever; 51. a first driving block; 52. a first clamping groove; 61. a second driving block; 62. and a second clamping groove.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

Embodiment one:

as shown in fig. 1 and 2, the utility model is an anti-rotation motor, comprising a shell 1, wherein the head part of the shell is a planetary reducer, and the tail part of the shell is a motor. The rotating shaft 2 in the motor is connected with the sun gear 3 in the speed reducer through a coupler.

The coupling consists of an input coupling 5 and an output coupling 6. The rotating shaft 2 is in molded surface connection with the input end coupling 5. The sun gear 3 is mounted on the output end coupling 6 and is integrally formed.

As shown in fig. 2-4, the outer side of the coupler is sleeved with a torsion spring 4, and the spiral direction of the torsion spring is the same as the forward rotation direction of the rotating shaft 2. The torsion spring 4 is provided at both ends thereof with a first driving lever 41 and a second driving lever 42, which are bent inward, respectively. The input coupling 5 is provided with a first drive block 51, the end face of which is in the shape of a bowknot. When the rotating shaft 2 rotates positively, the input end coupler 5 is driven, so that the first driving block 51 drives the torsion spring 4 to shrink and keep away from the shell 1, and the speed reducer is driven to rotate smoothly. The output end coupling 6 is provided with two centrally symmetrical second driving blocks 61, and the second driving blocks 61 are distributed on two sides of the first driving block 51. When the speed reducer is reversely rotated by external force, the first driving rod 41 is blocked by the first driving block 51, and the position is fixed; the second driving block 61 applies a pushing force to the second driving lever 42, thereby expanding the torsion spring 4 and abutting against the housing 1. At this time, friction is generated between the torsion spring 4 and the housing 1, thereby preventing the rotation shaft 2 from rotating in the reverse direction. The larger the reversing external force applied to the speed reducer is, the larger the friction force between the torsion spring 4 and the shell 1 is, so that the motor is ensured not to generate reversing.

Compared with the traditional electromagnetic sheet or friction plate, the torsion spring 4 is simple in structure, high in stability and not easy to damage.

Embodiment two:

the difference from the first embodiment is that: as shown in fig. 3 and 4, the first driving block 51 is provided with a first clamping groove 52 for clamping the first driving rod 41. The second driving block 61 is provided with a second clamping groove 62 for clamping the second driving rod 42. Therefore, the first driving rod 41 and the second driving rod 42 are limited, and the torsion spring 4 is more stable in position when being stressed and contracted.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. The utility model provides a prevent gyration motor, includes casing (1), be equipped with pivot (2) and sun gear (3) in casing (1), its characterized in that: the rotating shaft (2) is connected with the sun gear (3) through a coupler;

a torsion spring (4) is arranged in the coupler, and the spiral direction of the torsion spring is the same as the forward rotation direction of the rotating shaft (2);

when the rotating shaft (2) rotates positively, the coupler drives the torsion spring (4) to shrink and separate from the shell (1);

when the sun gear (3) is stressed and reversely rotated, the coupler drives the torsion spring (4) to open and abut against the shell (1).

2. The anti-rotation motor of claim 1, wherein: the coupler consists of an input end coupler (5) and an output end coupler (6);

the rotating shaft (2) is connected with the input end coupler (5);

the sun gear (3) is connected with the output end coupler (6).

3. The anti-rotation motor of claim 2, wherein: the two ends of the torsion spring (4) are respectively provided with a first driving rod (41) and a second driving rod (42) which are bent inwards;

the input end coupler (5) is provided with a first driving block (51) for driving the first driving rod (41);

the output end coupling (6) is provided with a second drive block (61) for driving the second drive rod (42).

4. A rotation preventing motor according to claim 3, wherein: the first driving block (51) is provided with a first clamping groove (52) for clamping the first driving rod (41).

5. A rotation preventing motor according to claim 3, wherein: the second driving block (61) is provided with a second clamping groove (62) for clamping the second driving rod (42).