Motor

Abstract

The utility model relates to the technical field of motors, in particular to a motor, which comprises a shell, a front end cover, a rear end cover, a support, a stator and a rotor. The shell is provided with an inner cavity with openings at two ends, the front end cover and the rear end cover are respectively arranged at the openings at the two ends of the shell, the bracket is clamped in the inner cavity and is sealed in the inner cavity by the rear end cover, the stator and the rotor are arranged in the inner cavity, and the stator and the rotor are arranged in the inner cavity. And the rotor is rotationally connected to the bracket and the front end cover. According to the motor provided by the utility model, the production efficiency can be improved, the manufacturing cost can be reduced, and the compact and lightweight design of the motor can be facilitated.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor. Background Technology

[0002] Currently, the connection between the bracket and the housing of an electric motor primarily relies on screw fastening. To ensure the strength and stability of the screw connection, the bracket must have sufficient thickness to accommodate the screw holes, which to some extent limits further reduction in structural size and affects the compactness and lightweight design of the motor. Furthermore, the current bracket-housing connection method requires tapping the housing and creating through-holes in the bracket. These processing steps not only increase production time but also raise the number of assembly steps, reducing production efficiency. Summary of the Invention

[0003] Based on this, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a motor whose structure can improve production efficiency, reduce manufacturing costs, and at the same time contribute to the compact and lightweight design of the motor.

[0004] This utility model is achieved through the following technical solution: an electric motor, including a housing, a front cover, a rear cover, a bracket, a stator, and a rotor; the housing has an inner cavity with openings at both ends, the front cover and the rear cover are respectively disposed at the openings at both ends of the housing, the bracket is engaged in the inner cavity and is closed in the inner cavity by the rear cover, the stator and the rotor are disposed in the inner cavity, and the rotor is rotatably connected to the bracket and the front cover.

[0005] Compared with existing technologies, the motor provided by this utility model, by accommodating the bracket within the inner cavity of the housing and securing it therein, eliminates the need for screws to fix the bracket and housing together. This reduces the number of parts and processing steps, thereby improving production efficiency and lowering manufacturing costs. Furthermore, accommodating the bracket within the inner cavity of the housing contributes to the motor's compact and lightweight design.

[0006] Furthermore, the inner wall of the housing is provided with a first groove extending circumferentially thereon, and the bracket is provided with a second groove on the side facing the inner wall of the housing. The first groove and the second groove are arranged opposite to each other and define a limiting channel. The motor also includes a limiting member that matches the limiting channel, and the limiting member is disposed within the limiting channel. The limiting channel is defined by the first groove on the housing and the second groove on the bracket, and the axial movement of the bracket is restricted by the limiting member disposed within the limiting channel.

[0007] Furthermore, the bracket is a circular bracket, and the limiting channel is an annular channel. The circular design of the bracket allows for unrestricted 360° installation, which helps improve assembly efficiency.

[0008] Furthermore, the limiting component includes two arc-shaped retaining springs, which are disposed opposite to each other within the limiting channel. The arc-shaped retaining springs not only limit the position of the bracket but also facilitate installation.

[0009] Furthermore, the housing has a limiting member insertion inlet at a position corresponding to the first groove, and the limiting member insertion inlet is connected to the first groove. The limiting member is inserted into the limiting channel through the limiting member insertion inlet.

[0010] Furthermore, it also includes a waterproof cap for covering the insertion opening of the limiting member, the waterproof cap being detachably connected to the housing. The waterproof cap achieves a seal on the insertion opening of the limiting member.

[0011] Furthermore, an elastic sealing ring is fitted onto one end of the bracket near the inner cavity, and an elastic sealing ring receiving groove is provided on the inner wall of the housing, the elastic sealing ring receiving groove matching the elastic sealing ring. The elastic sealing ring fills the gap between the bracket and the housing, improving the sealing performance.

[0012] Furthermore, the bracket and the housing are interference-fitted. This interference fit between the bracket and the housing provides radial limitation for the bracket.

[0013] Furthermore, the front end cover has a first bearing housing mounting hole on the side near the inner cavity. The motor also includes a bearing housing with a built-in bearing, which is disposed within the first mounting hole. The rotor includes a shaft, one end of which is rotatably mounted on the bearing housing. By supporting the rotor shaft with the bearing, friction and wear of the shaft are reduced, while also preventing dust, water, and other debris from entering the motor.

[0014] Furthermore, the bracket has a second bearing housing mounting hole on the side away from the inner cavity, the motor also includes a bearing housing with a built-in bearing, the bearing housing is disposed in the second bearing housing mounting hole, and the rotor includes a rotating shaft, one end of which is rotatably disposed in the bearing housing.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the motor described in this utility model. Figure 1 ;

[0017] Figure 2 This is an exploded schematic diagram of the motor described in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the motor described in this utility model. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the structure of the shell described in this utility model;

[0020] Figure 5 for Figure 4 An enlarged schematic diagram of point I shown;

[0021] Figure 6 This is a schematic diagram of the structure of the bracket described in this utility model. Figure 1 ;

[0022] Figure 7 This is a schematic diagram of the structure of the bracket described in this utility model. Figure 2 ;

[0023] Figure 8 This is a schematic diagram of the structure of the snap ring described in this utility model;

[0024] Figure 9 This is a schematic diagram of the front cover of the present invention;

[0025] Figure 10 This is a schematic diagram of the structure of the rear end cover of this utility model.

[0026] Reference numerals: 10, housing; 11, first groove; 12, elastic sealing ring receiving groove; 13, limiting member placement entrance; 20, front end cover; 21, first bearing seat mounting hole; 30, bracket; 31, second groove; 32, elastic sealing ring sleeve positioning; 33, second bearing seat mounting hole; 40, snap ring; 50, rear end cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be 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 utility model and are not intended to limit the present utility model.

[0028] Example 1

[0029] like Figure 1-10 As shown, this embodiment provides a motor, including a housing 10, a front cover 20, a rear cover 50, a bracket 30, a stator (not shown), and a rotor (not shown). The housing 10 has an inner cavity with openings at both ends. The front cover 20 and the rear cover 50 are respectively disposed at the openings at both ends of the housing 10. The bracket 30 is engaged in the inner cavity and is closed in the inner cavity by the rear cover 50. The stator and the rotor are disposed in the inner cavity, and the rotor is rotatably connected to the bracket 30 and the front cover 20.

[0030] The housing 10 has a hollow structure with openings at both ends. In this embodiment, the cross-sectional shape of the housing 10 is square. Of course, in other alternative embodiments, the cross-sectional shape of the housing 10 can be rectangular or other polygonal shapes. It should be noted that the inner cavity of the housing 10 in this embodiment is circular. Of course, in other alternative embodiments, the inner cavity can be designed with other shapes according to actual needs and the shape of the stator.

[0031] In this embodiment, the bracket 30 corresponds to the inner cavity of the housing 10, that is, the bracket 30 is a circular bracket. Of course, in other alternative embodiments, the bracket 30 is an ellipse or rectangle or other polygonal shape. For example, the inner cavity of the housing 10 can be designed as a first inner cavity and a second inner cavity that are interconnected. The first inner cavity is a circular inner cavity for accommodating the stator, and the second inner cavity is an ellipse or rectangle or other polygonal inner cavity for accommodating the bracket.

[0032] In this embodiment, the inner wall of the housing 10 is provided with a first groove 11 extending along its circumference, and the first groove 11 is open at one end near the housing 10. The bracket 30 is provided with a second groove 31 on the side facing the inner wall of the housing 10, and the first groove 11 and the second groove 31 are arranged opposite to each other and define a limiting channel. The motor also includes a limiting member that matches the limiting channel, and the limiting member is disposed in the limiting channel. The limiting channel and the limiting member restrict the axial movement of the bracket 30. Of course, in other alternative embodiments, the axial movement of the bracket 30 can be restricted by a snap-fit ​​mechanism, such as by providing several engaging recesses on the circumferential surface of the bracket 30 and several receiving grooves in the inner cavity of the housing 10. A pre-tightening spring and an engaging protrusion are provided in the receiving groove. Under the pre-tightening force of the pre-tightening spring, the engaging protrusion partially protrudes from the receiving groove, and under the action of external force, the engaging protrusion can be hidden in the receiving groove. Thus, the axial movement of the bracket 30 is restricted by the cooperation of the engaging protrusion and the engaging recess.

[0033] In this embodiment, the limiting channel is an annular channel. The design of the circular bracket and the annular limiting channel eliminates the need for alignment during bracket 30 installation, improving installation efficiency. Of course, in other alternative embodiments, the limiting channel can be two arc-shaped channels, respectively located on opposite sides of the bracket 30.

[0034] In this embodiment, both the first groove 11 and the second groove 31 are V-shaped grooves. The V-shaped groove design helps the limiting member to smoothly enter the limiting channel. Of course, in other alternative embodiments, the first groove 11 and the second groove 31 can be circular, rectangular, or other polygonal grooves.

[0035] In this embodiment, the limiting component includes two arc-shaped retaining springs 40, which are disposed opposite to each other within the limiting channel. The arc-shaped retaining springs 40 not only limit the position of the bracket but also facilitate installation.

[0036] In this embodiment, the bracket 30 and the housing 10 are interference-fitted. The interference fit between the bracket 30 and the housing 10 achieves radial limiting of the bracket 30. Alternatively, in other alternative embodiments, a limiting recess can be provided on the side of the bracket 30 away from the inner cavity, and a limiting protrusion can be provided on the side of the rear end cover 50 facing the bracket 30 to achieve radial limiting of the bracket 30.

[0037] In this embodiment, an elastic sealing ring (not shown) is fitted onto one end of the bracket 30 near the inner cavity. An elastic sealing ring receiving groove 12 is provided on the inner wall of the housing 10, and the elastic sealing ring receiving groove 12 matches the elastic sealing ring. The elastic sealing ring fills the gap between the bracket 30 and the housing 10, improving the sealing performance. Specifically, an elastic sealing ring fitting position 32 is provided at one end of the bracket 30 near the inner cavity, and the elastic sealing ring is positioned at the elastic sealing ring fitting position 32. In this embodiment, the elastic sealing ring is a rubber sealing ring.

[0038] In this embodiment, the housing 10 is provided with a limiting member insertion inlet 13 at a position corresponding to the first groove 11, and the limiting member insertion inlet 13 is connected to the first groove 11. The limiting member is inserted into the limiting channel through the limiting member insertion inlet 13.

[0039] Furthermore, the motor also includes a waterproof cover (not shown) for sealing the inlet of the limiting member, the waterproof cover being detachably connected to the housing 10. Specifically, the waterproof cover can be detachably connected by means of clips, screws, etc. The waterproof cover achieves a seal for the inlet 13 of the limiting member.

[0040] In this embodiment, the stator is bonded to the inner wall of the housing 10 with resin. Of course, in other alternative embodiments, it can also be fixed by welding, interference fit, or other methods. It should be noted that the specific structure and composition of the stator are prior art and will not be described further here.

[0041] In this embodiment, the front end cover 20 has a first bearing housing mounting hole 21 on the side near the inner cavity. The motor also includes a bearing housing (not shown) with a built-in bearing, which is disposed within the first mounting hole 21. The rotor includes a shaft, which is rotatably connected to the bearing on the bearing housing. It should be noted that the specific structure and composition of the rotor are prior art and will not be described in detail here.

[0042] In this embodiment, the bracket 30 has a second bearing seat mounting hole 31 on the side away from the inner cavity, the bearing seat is disposed in the second bearing seat mounting hole 31, and one end of the rotating shaft is rotatably disposed on the bearing seat.

[0043] In this embodiment, the motor further includes an encoder (not shown). One end of the rotating shaft extends from the inner cavity through the bracket 30 and is connected to the encoder. The rear end cover 50 encloses the encoder.

[0044] Compared with existing technologies, the motor provided by this utility model, by accommodating the bracket within the inner cavity of the housing and securing it therein, eliminates the need for screws to fix the bracket and housing together. This reduces the number of parts and processing steps, thereby improving production efficiency and lowering manufacturing costs. Furthermore, accommodating the bracket within the inner cavity of the housing contributes to the motor's compact and lightweight design.

[0045] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” refers to two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An electric motor, characterized in that, It includes a housing, a front cover, a rear cover, a bracket, a stator, and a rotor; the housing has an inner cavity with openings at both ends, the front cover and the rear cover are respectively disposed at the openings at both ends of the housing, the bracket is engaged in the inner cavity and is closed in the inner cavity by the rear cover, the stator and the rotor are disposed in the inner cavity, and the rotor is rotatably connected to the bracket and the front cover.

2. The motor according to claim 1, characterized in that, The inner wall of the housing is provided with a first groove extending along its circumference, and the bracket is provided with a second groove on the side facing the inner wall of the housing. The first groove and the second groove are arranged opposite to each other and define a limiting channel. The motor also includes a limiting member that matches the limiting channel, and the limiting member is disposed in the limiting channel.

3. The motor according to claim 2, characterized in that, The bracket is a circular bracket, and the limiting channel is an annular channel.

4. The motor according to claim 3, characterized in that, The limiting component includes two arc-shaped retaining rings, which are disposed opposite to each other within the limiting channel.

5. The motor according to claim 2, characterized in that, The housing has a limiting member inlet at the position corresponding to the first groove, and the limiting member inlet is connected to the first groove.

6. The motor according to claim 5, characterized in that, It also includes a waterproof cap for covering the inlet of the limiting member, the waterproof cap being detachably connected to the housing.

7. The motor according to claim 2, characterized in that, An elastic sealing ring is fitted at one end of the bracket near the inner cavity, and an elastic sealing ring receiving groove is provided on the inner wall of the housing, the elastic sealing ring receiving groove matching the elastic sealing ring.

8. The motor according to claim 1, characterized in that, The bracket and the housing are interference fit.

9. The motor according to claim 1, characterized in that, The front end cover has a first bearing housing mounting hole on the side near the inner cavity. The motor also includes a bearing housing with a built-in bearing. The bearing housing is disposed in the first bearing housing mounting hole. The rotor includes a rotating shaft, one end of which is rotatably disposed in the bearing housing.

10. The motor according to claim 1, characterized in that, The bracket has a second bearing housing mounting hole on the side away from the inner cavity. The motor also includes a bearing housing with a built-in bearing. The bearing housing is disposed in the second bearing housing mounting hole. The rotor includes a rotating shaft, one end of which is rotatably disposed in the bearing housing.

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