Motor structure

Abstract

The utility model provides a motor structure, which comprises a casing, a stator, a rotor, a bearing support, a circuit board and an end cover, the stator is fixedly arranged on the inner wall of the casing, the bearing support is fixedly arranged at the open end of the casing, the rotor is rotatably arranged in a cavity formed by the casing and the bearing support, the circuit board is fixedly arranged on the bearing support, and the end cover is buckled on the circuit board. According to the motor structure provided by the utility model, the circuit board is fixedly supported on the bearing support through the welding pins, and the end cover is supported on the top side of the circuit board through the parts, extending out of the circuit board, of the welding pins and is buckled and fixed with the circuit board through the pressing buckles; compared with a screw fastening mode, the assembling structure has the advantages of reducing cost, improving assembling efficiency and the like, and is suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor structure. Background Art

[0002] The electric motor, commonly known as "motor", refers to an electromagnetic device that converts electrical energy based on electromagnetic induction. Currently, electric motors are widely used and are ubiquitous in industrial production, home life, and transportation. They are widely used in various types of transportation, such as electric bicycles and electric vehicles.

[0003] In the traditional motor structure, three copper wires need to be led out of the coil winding inside the motor and welded together with the circuit board, and then an end cover is installed on the circuit board for sealing. At present, the end cover is mostly fixed on the top of the circuit board by multiple screws, which has the problems of high cost and low assembly efficiency during the assembly process.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to design a motor structure to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model aims to provide a motor structure.

[0006] To achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a motor structure, including a casing, a stator, a rotor, a bearing bracket, a circuit board and an end cover, wherein the stator is fixed on the inner wall of the casing, the bearing bracket is fixed on the open end of the casing, the rotor is rotatably disposed in a cavity formed by the casing and the bearing bracket, the circuit board is fixed on the bearing bracket, and the end cover is buckled on the circuit board.

[0007] A preferred technical solution is: a first axial hole is provided at the center of the bottom end of the housing, a second axial hole is provided at the center of the bearing bracket, and the first axial hole and the second axial hole are coaxially arranged.

[0008] A preferred technical solution is: one end of the rotating shaft of the rotor is rotated in the first shaft hole, and the other end of the rotating shaft of the rotor is rotated in the second shaft hole.

[0009] The preferred technical solution is: a plurality of welding feet are arranged at equal angles along the circumferential direction on the bearing bracket, a plurality of welding holes are arranged on the circuit board, the welding holes are arranged one-to-one with the welding feet, and the welding feet are inserted into the welding holes and fixed by welding.

[0010] The preferred technical solution is: a plurality of equiangularly arranged buckles are provided at the bottom edge of the end cover, and the buckles are provided at the edge of the circuit board.

[0011] A preferred technical solution is that the solder foot becomes a step column structure, the step surface on the solder foot supports the circuit board, and the part of the solder foot extending out of the circuit board is used to support the end cover.

[0012] The preferred technical solution is: the height of the portion of the solder foot extending out of the circuit board is H1, the height of the buckle point from the bottom side of the end cover is H2, and H1=H2.

[0013] The preferred technical solution is: a plurality of screw holes are arranged at equal angles along the circumferential direction on the end cover.

[0014] Due to the application of the above technical solution, the utility model has the following beneficial effects:

[0015] The utility model proposes a motor structure, in which a circuit board is fixedly supported on a bearing bracket by welding feet, and an end cover is supported on the top side of the circuit board by the part of the welding feet extending out of the circuit board, and is fastened to the circuit board by pressing buckles; compared with the screw fastening method, this assembly structure has the advantages of reducing costs and improving assembly efficiency, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the inner structure of the end cover involved in the utility model. DETAILED DESCRIPTION

[0018] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] See also Figure 1-Figure 2 . It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example:

[0022] like Figure 1 to Figure 2 As shown, according to an overall technical concept of the utility model, a motor structure is provided, including a casing 1, a stator 2, a rotor 3, a bearing bracket 4, a circuit board 5 and an end cover 6, the stator 2 is fixed on the inner wall of the casing 1, the bearing bracket 4 is fixed on the open end of the casing 1, the rotor 3 is rotatably disposed in a cavity formed by the casing 1 and the bearing bracket 4, the circuit board 5 is fixed on the bearing bracket 4, and the end cover 6 is buckled on the circuit board 5.

[0023] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the utility model, a first axial hole (not shown) is provided at the center of the bottom end of the casing 1, and a second axial hole (not shown) is provided at the center of the bearing bracket 4, and the first axial hole and the second axial hole are coaxially arranged.

[0024] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present utility model, one end of the rotating shaft of the rotor 3 is rotated in the first shaft hole through a bearing, and the other end of the rotating shaft of the rotor 3 is rotated in the second shaft hole through a bearing.

[0025] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the utility model, a plurality of welding feet 7 are arranged at equal angles along the circumferential direction on the bearing bracket 4, a plurality of welding holes are arranged on the circuit board, and the welding holes are arranged one by one corresponding to the welding feet 7, and the welding feet 7 are inserted into the welding holes and fixed by welding.

[0026] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present utility model, a plurality of equiangularly arranged buckles 61 are provided at the bottom edge of the end cover 6 , and the buckles 61 are buckled at the edge of the circuit board 5 .

[0027] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the solder foot 7 becomes a step column structure, the step surface on the solder foot 7 supports the circuit board 5, and the part of the solder foot 7 extending out of the circuit board 5 is used to support the end cover 6 to avoid the bottom side of the end cover 6 from being pressed against the circuit board 5.

[0028] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the height of the portion of the solder foot 7 extending out of the circuit board 5 is H1, and the height of the buckle point of the buckle 61 from the bottom side of the end cover 6 is H2, H1=H2, so as to limit the installation height of the end cover 6 and prevent the bottom side of the end cover 6 from contacting the circuit board 5.

[0029] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present utility model, a plurality of screw holes 62 are arranged at equal angles along the circumferential direction on the end cover 6 so as to be applicable to other motors that assemble the end cover by screws.

[0030] Therefore, the utility model has the following advantages:

[0031] The utility model proposes a motor structure, in which a circuit board is fixedly supported on a bearing bracket by welding feet, and an end cover is supported on the top side of the circuit board by the part of the welding feet extending out of the circuit board, and is fastened to the circuit board by pressing buckles; compared with the screw fastening method, this assembly structure has the advantages of reducing costs and improving assembly efficiency, and is suitable for promotion.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A motor structure, characterized in that: It includes a casing, a stator, a rotor, a bearing bracket, a circuit board and an end cover, wherein the stator is fixed on the inner wall of the casing, the bearing bracket is fixed on the open end of the casing, the rotor is rotatably disposed in a cavity formed by the casing and the bearing bracket, the circuit board is fixed on the bearing bracket, and the end cover is buckled on the circuit board.

2. A motor structure according to claim 1, characterized in that: A first axial hole is provided at the center of the bottom end of the housing, and a second axial hole is provided at the center of the bearing bracket. The first axial hole and the second axial hole are coaxially arranged.

3. A motor structure according to claim 2, characterized in that: One end of the rotating shaft of the rotor is rotated in the first shaft hole, and the other end of the rotating shaft of the rotor is rotated in the second shaft hole.

4. A motor structure according to claim 1, characterized in that: The bearing bracket is provided with a plurality of welding feet at equal angles along the circumferential direction, and the circuit board is provided with a plurality of welding holes, the welding holes are arranged in a one-to-one correspondence with the welding feet, and the welding feet are inserted into the welding holes and fixed by welding.

5. A motor structure according to claim 4, characterized in that: A plurality of pressing buckles arranged at equal angles are provided at the bottom edge of the end cover, and the pressing buckles are provided at the edge of the circuit board.

6. A motor structure according to claim 4, characterized in that: The solder foot forms a step column structure, the step surface on the solder foot supports the circuit board, and the portion of the solder foot extending out of the circuit board is used to support the end cover.

7. A motor structure according to claim 5, characterized in that: The height of the portion of the solder foot extending out of the circuit board is H1, and the height of the buckle point from the bottom side of the end cover is H2, H1=H2.

8. The motor structure according to claim 1, characterized in that: The end cover is provided with a plurality of screw holes at equal angles along the circumferential direction.

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