CN221669681U - A motor structure with a combined reducer - Google Patents

Abstract

The utility model discloses a motor structure with a speed reducer in a combined way, which comprises a stator assembly, a rotor assembly, the speed reducer and a bearing seat with a concave space, wherein the stator assembly is arranged on the bearing seat; the stator assembly is fixedly arranged on the inner wall of the concave space of the bearing seat in a fitting way, and the rotor assembly is arranged on the inner ring of the stator assembly; the speed reducer is connected with the outer wall of the end part of the bearing seat, and the sun gear rotating shaft of the speed reducer is fixedly connected with the rotor assembly. In the motor structure provided with the speed reducer in a combined way, the bearing seat can simultaneously have the function of the motor shell and can be matched with the speed reducer for installation, so that the axial length of the whole device formed by the motor and the speed reducer is greatly reduced, and the whole structure is more compact and lighter in weight.

Description

A motor structure with a combined reducer

Technical Field

The utility model relates to a motor structure, in particular to a motor structure combined with a reducer.

Background Art

As the application of motors and reducers becomes more and more extensive, the requirements for their weight and volume are also getting higher and higher.

In the prior art, the motor is usually placed behind the reducer, and then the sun gear on the reducer and the motor shaft are connected through a coupling. At the same time, a fixed bracket needs to be added at the rear end of the reducer, which makes the entire device larger in size and weight and cannot meet the requirements of lightweight and miniaturization.

Utility Model Content

The utility model aims at the drawbacks of the prior art and provides a motor structure combined with a reducer.

The motor structure of the combined reducer of the utility model comprises a stator assembly, a rotor assembly, and a reducer, and also comprises a bearing seat with a concave space;

The stator assembly is fixedly arranged on the inner wall of the concave space of the bearing seat, and the rotor assembly is arranged on the inner ring of the stator assembly;

The reducer is connected to the outer wall of the end of the bearing seat, and the sun gear shaft of the reducer is fixedly connected to the rotor assembly.

In the motor structure of the combined reducer of the utility model, the bearing seat includes an outer cylindrical wall, an inner cylindrical wall, and an end plate arranged between the end of the outer cylindrical wall and the end of the inner cylindrical wall, and the outer cylindrical wall, the inner cylindrical wall, and the end plate together form the concave space;

The reducer is arranged on the outer wall surface of the end plate away from the concave space.

In the motor structure of the combined reducer of the utility model, the rotor assembly includes an integrally formed matching portion, a transition portion, and a mounting portion;

Wherein, the matching portion is located in the concave space and is arranged in cooperation with the stator assembly;

The mounting portion is located at the center of the inner cylindrical wall and is fixedly connected to the sun gear shaft;

The transition portion spans across the top of the inner cylindrical wall and connects the matching portion and the mounting portion.

In the motor structure of the combined reducer of the utility model, a support bearing is further arranged between the inner cylindrical wall and the mounting portion.

In the motor structure of the combined reducer described in the utility model, the outer wall of the inner cylindrical wall is provided with a mounting groove, the outer ring of the support bearing is clamped in the mounting groove and is clamped and fixed by a bearing pressure plate installed on the inner cylindrical wall.

In the motor structure of the combined reducer of the utility model, the outer wall of the mounting portion is provided with a clamping groove, and the end of the sun gear shaft is provided with a clamping groove;

When the sun gear shaft is fixedly connected to the mounting portion, both ends of the inner ring of the support bearing are clamped and fixed by the clamping groove and the fixing groove respectively.

In the motor structure of the combined reducer described in the utility model, the bearing seat can also serve as the motor housing function and can be installed in conjunction with the reducer, so that the axial length of the overall device composed of the motor and the reducer is greatly reduced, making the overall structure more compact and lighter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a motor structure of a combined reducer according to the present invention.

DETAILED DESCRIPTION

The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in FIG1 , the motor structure of the combined reducer described in the utility model includes a stator assembly 2, a rotor assembly 3, and a reducer 1. In order to achieve the requirements of miniaturization and light weight, the utility model further provides a bearing seat 4 having a concave space 40, and the stator assembly 2 is fixedly arranged on the inner wall 421 of the concave space 40 of the bearing seat 4, and the rotor assembly 3 is arranged on the inner ring of the stator assembly 2, and the reducer 1 is connected to the outer wall of the end of the bearing seat 4, and the sun gear shaft 11 of the reducer 1 is fixedly connected to the rotor assembly 4.

Specifically, the bearing seat 4 includes an outer cylindrical wall 42, an inner cylindrical wall 43, and an end plate 44 disposed between the ends of the outer cylindrical wall 43 and the inner cylindrical wall 42, and the inner concave space 40 is surrounded by the outer cylindrical wall 42, the inner cylindrical wall 43, and the end plate 44. The reducer 1 is disposed away from the inner concave space 40 in a mounting groove 441 provided on the outer wall surface of the end plate 44, and can be fixed by fasteners such as bolts.

The rotor assembly 3 is arranged in correspondence with the bearing seat 4, and the rotor assembly 3 specifically includes an integrally formed matching portion 31, a transition portion 32, and a mounting portion 33. The matching portion 31 is located in the inner concave space 40 and is arranged in cooperation with the stator assembly 2; the mounting portion 33 is located at the center of the inner cylindrical wall 43 and is fixedly connected to the sun gear shaft 11 by a fastener; the transition portion 32 spans the top of the inner cylindrical wall 43 and connects the matching portion 31 and the mounting portion 33. Further, a support bearing 5 is also arranged between the inner cylindrical wall 43 and the mounting portion 33, and the support bearing 5 can adopt a cross roller bearing. Specifically, an installation slot 431 is arranged on the outer wall of the inner cylindrical wall 43, and the outer ring of the support bearing 5 is clamped in the installation slot 431, and then clamped and fixed by a bearing pressure plate 51 installed at the end of the inner cylindrical wall 43. At the same time, a clamping groove 331 can be set on the outer wall of the mounting portion 33, and a clamping groove 111 can be opened at the end of the sun gear shaft 11. When the sun gear shaft 11 is fixedly connected to the mounting portion 33, the two ends of the inner ring of the support bearing 5 are clamped and fixed by the clamping groove 331 and the clamping groove 111 respectively.

In the motor structure of the combined reducer described in the present invention, the bearing seat 4 can also serve as the motor housing and can be installed in conjunction with the reducer 1, so that the axial length of the overall device composed of the motor and the reducer is greatly reduced, making the overall structure more compact and lighter.

Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described here.

Claims (6)

1. A motor structure combined with a reducer, comprising a stator assembly, a rotor assembly, and a reducer, characterized in that it also comprises a bearing seat with a concave space; The stator assembly is fixedly arranged on the inner wall of the concave space of the bearing seat, and the rotor assembly is arranged on the inner ring of the stator assembly; The reducer is connected to the outer wall of the end of the bearing seat, and the sun gear shaft of the reducer is fixedly connected to the rotor assembly. 2. The motor structure of the combined reducer as claimed in claim 1, characterized in that the bearing seat comprises an outer cylindrical wall, an inner cylindrical wall, and an end plate arranged between the end of the outer cylindrical wall and the end of the inner cylindrical wall, and the outer cylindrical wall, the inner cylindrical wall, and the end plate together form the concave space; The reducer is arranged on the outer wall surface of the end plate away from the concave space. 3. The motor structure of the combined reducer as claimed in claim 2, characterized in that the rotor assembly comprises an integrally formed matching portion, a transition portion, and a mounting portion; Wherein, the matching portion is located in the concave space and is arranged in cooperation with the stator assembly; The mounting portion is located at the center of the inner cylindrical wall and is fixedly connected to the sun gear shaft; The transition portion spans across the top of the inner cylindrical wall and connects the matching portion and the mounting portion. 4. The motor structure of the combined reducer as described in claim 3 is characterized in that a support bearing is also arranged between the inner cylindrical wall and the mounting portion. 5. The motor structure of the combined reducer as described in claim 4 is characterized in that the outer wall of the inner cylindrical wall is provided with a mounting groove, the outer ring of the support bearing is clamped in the mounting groove, and is clamped and fixed by a bearing pressure plate installed on the inner cylindrical wall. 6. The motor structure with a combined reducer as claimed in claim 4, characterized in that a clamping groove is provided on the outer wall of the mounting portion, and a clamping groove is provided on the end of the sun gear shaft; When the sun gear shaft is fixedly connected to the mounting portion, both ends of the inner ring of the support bearing are clamped and fixed by the clamping groove and the fixing groove respectively.