CN219394595U

CN219394595U - External self-locking device of gear motor

Info

Publication number: CN219394595U
Application number: CN202320395276.9U
Authority: CN
Inventors: 李永超
Original assignee: Ningbo Geaibang Technology Co ltd
Current assignee: Ningbo Lizhi Jiazhi Technology Co.,Ltd.
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-07-21
Anticipated expiration: 2033-03-06

Abstract

The utility model is applicable to the related technical field of gear motors, and provides an external self-locking device of a gear motor, which comprises: the metal machine box and the fixed shaft fixedly arranged on the metal machine box; the motor cover I and the motor cover II are internally provided with positioning grooves for accommodating the gear motor, the motor cover II is in running fit with the fixed shaft, and the motor cover I is externally provided with positioning holes and posts; the locking ratchet shaft is fixedly arranged on the metal machine box and fixedly connected with an output shaft of the speed reducing motor, and the motor cover I is in running fit with the locking ratchet shaft; at least two groups of locking swing arms, wherein the locking swing arms are rotatably arranged on a column outside the motor cover through a swing arm torsion spring; the double-end electromagnet is used for controlling the motion of the locking swing arm, and is fixedly arranged outside the motor cover.

Description

External self-locking device of gear motor

Technical Field

The utility model relates to the technical field related to gear motors, in particular to an external self-locking device of a gear motor.

Background

In the use scene of traditional gear motor, gear motor self design's self-locking function often can not withstand great overload or external force and intervene, and especially some miniature speed reduction self-locking motor installs under the condition of normal external load additional in the use, damages the self-locking gear very easily, seriously influences gear motor's life.

Therefore, in view of the above situation, there is an urgent need to provide an external self-locking device of a gear motor to overcome the shortcomings in the current practical application.

Disclosure of Invention

The utility model aims to provide an external self-locking device of a gear motor, and aims to solve the problems in the technical background.

The utility model is realized in such a way that the external self-locking device of the gear motor comprises:

the metal machine box and the fixed shaft fixedly arranged on the metal machine box;

the motor cover I and the motor cover II are internally provided with positioning grooves for accommodating the gear motor, the motor cover II is in running fit with the fixed shaft, and the motor cover I is externally provided with positioning holes and posts;

the locking ratchet shaft is fixedly arranged on the metal machine box and fixedly connected with an output shaft of the speed reducing motor, and the motor cover I is in running fit with the locking ratchet shaft;

at least two groups of locking swing arms, wherein the locking swing arms are rotatably arranged on a column outside the motor cover through a swing arm torsion spring; and

the double-headed electromagnet is used for controlling the movement of the locking swing arm and is fixedly arranged outside the motor cover.

As a further scheme of the utility model: the two groups of locking swing arms are arranged on the motor cover one and symmetrically arranged.

As a further scheme of the utility model: the locking ratchet shaft and the fixed shaft are internally provided with a shaft sleeve and an anti-rotation plane, and the locking ratchet shaft and the output shaft of the gear motor and the fixed shaft and the output shaft of the gear motor are locked by shaft center locking screws.

As a further scheme of the utility model: the locking ratchet shaft is fixed with the metal machine box through shaft end locking screws.

As a further scheme of the utility model: the gear motor is fixedly arranged in the positioning grooves of the first motor cover and the second motor cover through motor locking screws.

As a further scheme of the utility model: the motor cover I and the motor cover II are fixedly connected through a cover locking screw.

Compared with the prior art, the utility model has the beneficial effects that:

through the cooperation setting of two sets of locking swing arms 5, can in good time two-way locking simultaneously, guarantee gear motor self locking structure and not receive the damage to avoid equipment accident or artificial exogenic action to cause the loss, improve gear motor's life.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is an exploded view of the present utility model.

Fig. 3 is a schematic diagram of a front view structure of the present utility model.

Fig. 4 is a schematic cross-sectional view of the self-locking state at A-A in fig. 3.

Fig. 5 is a schematic cross-sectional view of the unlocked state at A-A in fig. 3.

In the accompanying drawings: 1-gear motor, 2-motor cover one, 3-motor cover two, 4-double-head electromagnet, 5-locking swing arm, 6-metal machine box, 7-swing arm torsional spring, 8-locking ratchet shaft, 9-fixed shaft, 10-axle center locking screw, 11-axle end locking screw, 12-hood locking screw, 13-motor locking screw.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 5, the external self-locking device for a gear motor provided by the embodiment of the utility model includes:

a metal machine box 6 and a fixed shaft 9 fixedly installed on the metal machine box 6;

the motor cover I2 and the motor cover II 4 are internally provided with positioning grooves for accommodating the gear motor 1, the motor cover II 4 is in rotary fit with the fixed shaft 9, and the outer part of the motor cover I2 is also provided with positioning holes and columns;

the locking ratchet shaft 8 is fixedly arranged on the metal machine box 6, the locking ratchet shaft 8 is fixedly connected with the output shaft of the gear motor 1, and the motor cover I2 is in running fit with the locking ratchet shaft 8;

at least two groups of locking swing arms 5, wherein the locking swing arms 5 are rotatably arranged on a column outside the motor cover one 2 through a swing arm torsion spring 7; and

the double-headed electromagnet 4 is used for controlling the movement of the locking swing arm 5, and the double-headed electromagnet 4 is fixedly arranged outside the motor cover one 2.

In the embodiment of the utility model, a first gear motor 1, a first motor cover 2, a second motor cover 4, a double-headed electromagnet 4, a locking swing arm 5 and a swing arm torsion spring 7 form a first synchronous body, and when the first gear motor 1 is started under the condition that the second synchronous body is fixed, the first synchronous body rotates along the axial direction of the gear motor 1 and the gear motor 1 is closed, the first synchronous body stops rotating, at the moment, the inside of a gearbox of the gear motor 1 is self-locked firstly, then the double-headed electromagnet 4 in the first synchronous body is powered off and opened, the outer swinging end part of the locking swing arm 5 is pushed to be inserted into a rotary disc ratchet tooth socket of the locking ratchet shaft 8 in the second synchronous body, and the positive and negative rotating directions realize external self-locking simultaneously; the linear part at one end of the swing arm torsion spring 7 is inserted into the limiting hole of the motor cover two 4, the linear part at the other end is inserted into the limiting hole at the end part of the locking swing arm 5, so that the two groups of locking swing arms 5 have torsion which swings symmetrically inwards, when the double-end electromagnet 4 attracts the push rod to retract, the locking swing arm 5 automatically swings inwards, the locking ratchet shaft 8 is separated from the circular disc-shaped ratchet, the external unlocking is completed, and the gear motor 1 can be started.

In one embodiment of the present utility model, referring to fig. 4 and 5, the locking swing arms 5 are provided with two groups, and the two groups of locking swing arms 5 are symmetrically arranged on the motor cover one 2.

In this embodiment, under the action of the push rods of the double-headed electromagnet 4, the two groups of locking swing arms 5 symmetrically arranged move in opposite directions in time, and when the gear motor 1 stops, the push rods of the double-headed electromagnet 4 are driven out, so that the two groups of locking swing arms 5 swing outwards simultaneously and are embedded into annular ratchet teeth in a disc of the locking ratchet shaft 8, and external self-locking is completed.

In one embodiment of the present utility model, referring to fig. 2, the locking ratchet shaft 8 and the fixing shaft 9 are respectively provided with a shaft sleeve and an anti-rotation plane, and the locking ratchet shaft 8 and the output shaft of the gear motor 1 and the fixing shaft 9 and the output shaft of the gear motor 1 are locked by the shaft center locking screw 10.

In one embodiment of the present utility model, referring to fig. 2, the locking ratchet shaft 8 and the metal case 6 and the fixing shaft 9 and the metal case 6 are fixed by shaft end locking screws 11.

In this embodiment, the lock ratchet shaft 8 and the square outer end of the fixed shaft 9 are locked into the square fixing hole of 14 by the shaft end locking screw 11 and pressed.

In one embodiment of the present utility model, referring to fig. 1 and 2, the gear motor 1 is fixedly installed in the positioning slots of the first motor cover 2 and the second motor cover 4 through motor locking screws 13;

the motor cover I2 and the motor cover II 4 are fixedly connected through a cover locking screw 12.

In summary, the working principle of the utility model is as follows: the speed reducing motor 1, the motor cover I2, the motor cover II 4, the double-headed electromagnet 4, the locking swing arm 5 and the swing arm torsion spring 7 form a first synchronous body, and when the speed reducing motor 1 is started, the first synchronous body axially rotates along the speed reducing motor 1 and the speed reducing motor 1 is closed, at the moment, the inside of a gearbox of the speed reducing motor 1 is firstly self-locked, the double-headed electromagnet 4 in the first synchronous body is powered off and opened, the outer swinging end part of the locking swing arm 5 is pushed to be inserted into a rotary disc ratchet tooth socket of the locking ratchet shaft 8 in the second synchronous body, and the positive and negative rotation directions simultaneously realize external self-locking relative to the other synchronous body II formed by the double output shaft of the speed reducing motor 1, the locking ratchet shaft 8, the fixed shaft 9 and the metal machine box 6; and the external self-locking device is synchronously controlled by the electric appliance control board, so that reasonable same-frequency logic can be set, self-locking and unlocking switching can be realized at any time, and the space for improving the practicability such as remote control is provided.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The external self-locking device of the gear motor comprises a metal machine box and a fixed shaft fixedly arranged on the metal machine box, and is characterized by further comprising:

2. The external self-locking device of a gear motor according to claim 1, wherein two groups of locking swing arms are provided, and the two groups of locking swing arms are symmetrically arranged on the motor cover one.

3. The external self-locking device of the gear motor according to claim 1, wherein the locking ratchet shaft and the fixed shaft are internally provided with a shaft sleeve and an anti-rotation plane, and the locking ratchet shaft and the output shaft of the gear motor and the fixed shaft and the output shaft of the gear motor are locked by shaft center locking screws.

4. The external self-locking device of the gear motor according to claim 1, wherein the locking ratchet shaft and the metal machine box and the fixing shaft and the metal machine box are fixed through shaft end locking screws.

5. The external self-locking device of a gear motor according to claim 1, wherein the gear motor is fixedly installed in the positioning grooves of the first motor cover and the second motor cover through motor locking screws.

6. The external self-locking device of a gear motor according to claim 1 or 5, wherein the first motor cover and the second motor cover are fixedly connected through a cover locking screw.