CN213151820U

CN213151820U - Linear driving mechanism

Info

Publication number: CN213151820U
Application number: CN202022519343.2U
Authority: CN
Inventors: 黄求索; 刘换新; 吴富阿
Original assignee: Guangdong Saini Intelligent Equipment Technology Co ltd
Current assignee: Guangdong Saini Intelligent Equipment Technology Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-05-07
Anticipated expiration: 2030-11-04

Abstract

The application relates to the technical field of motors, in particular to a linear driving mechanism which comprises a mounting shell, wherein the mounting shell is provided with a stator, a rotor and a screw shaft which is coaxially connected with the rotor, a bearing for rotatably bearing the screw shaft is mounted in the mounting shell, a nut piece is fixedly mounted on one side of the bearing, and the nut piece is in threaded connection with the screw shaft; the screw rod is characterized by further comprising a sliding seat, the mounting shell is connected to the sliding seat in a sliding mode, and the end portion of the screw rod shaft is rotatably connected to the sliding seat. This application has the advantage that improves motor life.

Description

Linear driving mechanism

Technical Field

The application relates to the technical field of motors, in particular to a linear driving mechanism.

Background

The motor-driven screw rod structure is an effective linear transmission mechanism, can reduce devices such as slide rails, belt wheels and the like in the linear transmission mechanism, greatly facilitates the use of customers, and is widely applied to linear motion schemes.

The existing motor-driven screw rod structure comprises a motor, a sliding rail and a screw rod coaxially connected with a motor output shaft, the concentricity of the motor output shaft and the screw rod cannot be guaranteed by the structure, mechanical resonance is easily caused, and the service life of the motor is influenced.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the above prior art, the purpose of this application is to provide a linear driving mechanism, has the advantage that improves motor life.

The technical purpose of the application is realized by the following technical scheme: a linear driving mechanism comprises a mounting shell, wherein the mounting shell is provided with a stator, a rotor and a screw shaft coaxially connected with the rotor, a bearing used for rotatably bearing the screw shaft is mounted in the mounting shell, a nut piece is fixedly mounted on one side of the bearing, and the nut piece is in threaded connection with the screw shaft;

the screw rod is characterized by further comprising a sliding seat, the mounting shell is connected to the sliding seat in a sliding mode, and the end portion of the screw rod shaft is rotatably connected to the sliding seat.

Preferably, the slide seat is provided with a sliding groove arranged along the length direction of the screw rod shaft, and the mounting shell is provided with a sliding block connected in the sliding groove in a sliding manner.

Preferably, the slider is L-shaped.

To sum up, the beneficial effect that this application has: when the structure works, the rotor rotates to drive the nut piece to rotate, at the moment, the screw rod shaft rotates in the nut piece and moves linearly relative to the mounting shell, so that the mounting shell is pushed to slide on the sliding seat, and the linear motion of the structure is realized; the structure does not need to adopt a split type connecting structure of the motor output shaft and the screw rod in the prior art, ensures the concentricity of the motion of the screw rod shaft of the motor, avoids causing mechanical resonance, and prolongs the service life of the motor.

Drawings

FIG. 1 is a partial cross-sectional view of an embodiment of the present application;

fig. 2 is another perspective view of a partial cross-sectional view of an embodiment of the present application.

Reference numerals: 1. mounting a shell; 11. a slider; 2. a stator; 3. a rotor; 4. a screw shaft; 5. a bearing; 6. a nut member; 7. a slide base; 71. a chute.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A linear driving mechanism, referring to fig. 1 and 2, comprises a mounting shell 1, wherein the mounting shell 1 is provided with a stator 2, a rotor 3 and a screw shaft 4 coaxially connected with the rotor 3, a bearing 5 for rotatably bearing the screw shaft 4 is installed in the mounting shell 1, a nut member 6 is fixedly installed on one side of the bearing 5, and the nut member 6 is in threaded connection with the screw shaft 4;

the screw rod installation structure further comprises a sliding seat 7, the installation shell 1 is connected to the sliding seat 7 in a sliding mode, and the end portion of the screw rod shaft 4 is rotatably connected to the sliding seat 7.

When the structure works, the rotor 3 rotates to drive the nut piece 6 to rotate, at the moment, the screw shaft 4 rotates in the nut piece 6 and moves linearly relative to the mounting shell 1, so that the mounting shell 1 is pushed to slide on the sliding seat 7, and the linear motion of the structure is realized; this structure need not to adopt split type connection structure of motor output shaft and lead screw among the prior art, has guaranteed the concentricity of motor lead screw shaft 4 motion, avoids arousing mechanical resonance, has prolonged the life of motor.

Specifically, the slide seat 7 is provided with a sliding groove 71 arranged along the length direction of the screw shaft 4, and the mounting shell 1 is provided with a sliding block 11 connected in the sliding groove 71 in a sliding manner. The arrangement of the sliding block 11 and the sliding groove 71 further improves the sliding linearity and stability of the mounting shell 1.

Specifically, the slide seat 7 is L-shaped.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present application.

Claims

1. A linear driving mechanism is characterized in that: the mounting shell is provided with a stator, a rotor and a screw shaft coaxially connected with the rotor, a bearing used for rotatably bearing the screw shaft is mounted in the mounting shell, a nut piece is fixedly mounted on one side of the bearing, and the nut piece is in threaded connection with the screw shaft;

2. A linear drive mechanism as claimed in claim 1, wherein: the slide is provided with a sliding groove arranged along the length direction of the screw rod shaft, and the mounting shell is provided with a sliding block connected in the sliding groove in a sliding manner.

3. A linear drive mechanism as claimed in claim 2, wherein: the slide is L-shaped.