CN210669774U

CN210669774U - Push rod motor self-locking structure

Info

Publication number: CN210669774U
Application number: CN201922019205.5U
Authority: CN
Inventors: 卢连苗; 卢勃; 范义广
Original assignee: Nningbo Qiangsheng Electric Motor Co ltd
Current assignee: Nningbo Qiangsheng Electric Motor Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-06-02
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a push rod motor auto-lock structure, including push rod motor main part, push rod motor main part includes the rotor shaft, the rotor shaft front end stretches out from the motor housing front end and forms the output shaft the rotor shaft rear end stretches out from the motor housing rear end and forms the extension axle extend epaxial overcoat and establish a spring extend the fixed jump ring that is provided with in axle rear end, the spring compressed tightly at the jump ring with between the terminal surface of motor housing rear end. The utility model discloses make and produce a damping between motor casing rear end face and the jump ring to guaranteed to provide sufficient self-locking power after the motor outage, prevented that it from receiving still can continue to rotate behind the external force.

Description

Push rod motor self-locking structure

Technical Field

The utility model relates to the technical field of motors, more specifically relates to auto-lock structure who uses on the push rod motor.

Background

The push rod motor comprises a motor shell, wherein a rotor is arranged in the motor shell, two ends of the rotor are rotatably supported by the motor shell, a front end cover is arranged at the front end of the motor shell, a turbine seat is arranged on the front end cover, a turbine is rotatably arranged on the turbine seat, and a worm is fixed at the front end of a rotor shaft of the rotor and matched with the turbine.

The principle of the push rod motor is that a worm and a turbine are matched to output power to further drive a screw rod arranged in an inner pipe, the screw rod drives a screw rod nut connected with the screw rod to do axial motion, and when the push rod motor reaches a set stroke, the running direction of the motor is controlled through contact between a switch contact piece and a micro switch.

The traditional push rod motor can not provide enough self-locking force after power failure at present, and can rotate after being subjected to external force.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a to the not enough of existence among the prior art, provide a push rod motor auto-lock structure.

The utility model discloses a realize through following technical scheme: the utility model provides a push rod motor self-locking structure, includes push rod motor main part, push rod motor main part includes the rotor shaft, the rotor shaft front end stretches out from the motor housing front end and forms the output shaft the rotor shaft rear end stretches out from the motor housing rear end and forms and extends the axle extend epaxial overcoat and establish a spring extend the fixed jump ring that is provided with in axle rear end, the spring is compressed tightly at the jump ring with between the terminal surface of motor housing rear end.

In the technical scheme, the rear end of the motor shell protrudes to one side to form a first bearing seat, a first bearing is arranged in the first bearing seat, the front end of the motor shell protrudes to the other side to form a second bearing seat, a second bearing is arranged in the second bearing seat, and the front end and the rear end of the rotor shaft are rotatably supported by the second bearing and the first bearing respectively.

In the above technical scheme, the first bearing is an oil bearing, and the second bearing is a ball bearing.

The utility model discloses following beneficial effect has: the utility model discloses make and produce a damping between motor casing rear end face and the jump ring to guaranteed to provide sufficient self-locking power after the motor outage, prevented that it from receiving still can continue to rotate behind the external force.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 3, a push rod motor self-locking structure includes a push rod motor main body 1, the push rod motor main body 1 includes a rotor shaft 10, the front end of the rotor shaft 10 extends from the front end of a motor housing to form an output shaft 10a, the rear end of the rotor shaft 10 extends from the rear end of the motor housing to form an extension shaft 10b, a spring 3 is sleeved on the extension shaft 10b, a clamp spring 2 is fixedly arranged at the rear end of the extension shaft 10b, and the spring 3 is compressed between the clamp spring 2 and the end surface of the rear end of the motor housing.

In the structure, the spring 3 is pressed tightly, so that a damping is generated between the end face of the rear end of the motor shell and the clamp spring 2, the damping ensures that the motor can provide enough self-locking force after power failure, and the motor is prevented from continuing to rotate after being subjected to external force.

Preferably, the rear end of the motor housing protrudes to one side to form a first bearing seat 100, a first bearing 5 is arranged in the first bearing seat 100, the front end of the motor housing protrudes to the other side to form a second bearing seat 101, a second bearing 6 is arranged in the second bearing seat 101, and the front end and the rear end of the rotor shaft 10 are rotatably supported by the second bearing and the first bearing respectively. The first bearing 5 is an oil bearing, and the second bearing 6 is a ball bearing.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The foregoing embodiments and description of the invention have been provided in the present application for the purpose of illustrating the principles of the invention and is subject to various changes and modifications without departing from the spirit and scope of the invention. All such variations and modifications are intended to be within the scope of the claimed invention.

Claims

1. The utility model provides a push rod motor self-locking structure, includes push rod motor body (1), push rod motor body (1) includes rotor shaft (10), rotor shaft (10) front end stretches out from the motor housing front end and forms output shaft (10 a), its characterized in that: the rear end of the rotor shaft (10) extends out of the rear end of the motor shell to form an extension shaft (10b), a spring (3) is sleeved on the extension shaft (10b), a clamp spring (2) is fixedly arranged at the rear end of the extension shaft (10b), and the spring (3) is pressed between the clamp spring (2) and the end face of the rear end of the motor shell.

2. The push rod motor self-locking structure of claim 1, wherein: the motor shell is characterized in that the rear end of the motor shell protrudes towards one side to form a first bearing seat (100), a first bearing (5) is arranged in the first bearing seat (100), the front end of the motor shell protrudes towards the other side to form a second bearing seat (101), a second bearing (6) is arranged in the second bearing seat (101), and the front end and the rear end of the rotor shaft (10) are rotatably supported by the second bearing and the first bearing respectively.

3. The push rod motor self-locking structure of claim 2, wherein: the first bearing (5) is an oil bearing, and the second bearing (6) is a ball bearing.