A motor

Abstract

The present invention discloses a motor, including a stator housing, a rotor and end covers sleeved on both ends of the rotor, a plurality of convex parts are formed axially at both end faces of the stator housing, a plurality of convex parts form positioning surfaces for fixing and connecting the end covers, a base adapted to the aperture size of the through hole is detachably connected to the bottom of the end cover, and the end cover is adjusted through its axial position to achieve the selective adaptation of its base to the opening of the through hole in a fully closed or semi-closed state. The present invention adopts a detachably connected base at the bottom of the end cover, so that the base can be adapted to the customer's ordering requirements to directly produce an end cover structure with a fully closed or semi-closed size, and different sealing effects can be achieved by only changing the connection position of the base, effectively reducing production costs, and improving the adaptability of the end cover and the production efficiency of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor. Background Art

[0002] In the production and manufacturing of motors, actual production needs to produce motors with different structural characteristics according to customer requirements. When considering the overall sealing and stability of the motor, customers generally order motor products with end covers with sealing structures at both ends. When considering the heat dissipation effect of the motor and improving its performance, customers generally order motor products with end cover ventilation performance. The above two products are suitable for different use environments, and each has its own outstanding performance characteristics. The existing problem is that when the above two motors need to be used, the product design needs to provide two different motor end cover solutions, which undoubtedly increases the production burden and reduces the adaptability of the motor's stator housing. Summary of the invention

[0003] The object of the present invention is to provide a motor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor, comprising a stator housing, a rotor and end covers sleeved on both ends of the rotor, wherein a plurality of protrusions are formed axially at both end surfaces of the stator housing, and a plurality of the protrusions form positioning surfaces for fixing and connecting the end covers, and a base adapted to the aperture size of the through hole is detachably connected to the bottom of the end cover, and the end cover is adjusted through its axial position to achieve a fully closed or semi-closed state of the base to the opening of the through hole.

[0005] The outer edge contour of the base is adapted to the inner wall contour of the through hole opening, and the fully closed state adaptation is achieved by the outer edge contour of the base fitting the inner wall contour of the through hole. After the base is axially displaced outward along the central axis of the through hole, a preset size of reserved gap is formed at the bottom edge of the base and the opening of the through hole to achieve semi-closed state adaptation.

[0006] The end cover includes a bearing cover, a connecting portion connected to the bottom of the bearing cover, and a wing span portion formed at the outer edge of the connecting portion and extending outward. The bearing cover is arranged as a truncated cone structure and extends outward along the axial direction of the through hole. The connecting portion annularly wraps the lower portion of the bearing cover and forms an annular groove with its side wall. The wing span portion is fixedly connected to the convex portion.

[0007] The groove on the connecting portion has an axial reverse end surface formed with a sub-base for connecting to the base. The base is arranged at a preset axial height position of the sub-base and realizes the end cover to adapt to the opening of the through hole in a fully closed or semi-closed state.

[0008] The base realizes the adaptation of the end cover to the opening of the through hole in a fully closed state or a semi-closed state by fixing the end cover relative to the plane where the positioning surface is located.

[0009] Three convex parts are formed at both end surfaces of the stator housing and are evenly arranged on the end surfaces, and the wing span part is fixedly connected to the end surfaces of the convex parts.

[0010] The base is welded to a preset position of the auxiliary base.

[0011] It can be seen from the above technical solution that the present invention adopts a detachable base at the bottom of the end cover, so that the base can be adapted to the customer's ordering requirements to directly produce an end cover structure with a fully enclosed or semi-enclosed size. Different sealing effects can be achieved only by changing the connection position of the base, which effectively reduces production costs and improves the adaptability of the end cover and the production efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is shown in FIG. Figure 1 ;

[0013] Figure 2 The present invention is shown in FIG. Figure 2 ;

[0014] Figure 3 It is a side view of the end cover portion of the present invention;

[0015] Figure 4 This is a partial enlarged view of the gasket installation position of the present invention.

[0016] In the figure: 1 shaft, 2 end cover, 21 bearing, 22 bearing cover, 23 connecting part, 24 wing span part, 25 base, 26 auxiliary base, 3 cover body, 31 supporting part, 32 convex part, 4 reserved gap, 5 bolts, 6 gaskets. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] like Figure 1-4 A motor is shown, which includes a stator housing 3, a rotor and end covers 2 sleeved on both ends of the rotor, a through hole for assembling the rotor is formed at the central axis of the stator housing, and a plurality of protrusions 32 are formed axially at both end surfaces of the stator housing 3, and the plurality of protrusions 32 form positioning surfaces for fixing and connecting the end covers 2, that is, it can be understood that a plurality of protrusions 32 for fixing and connecting the end covers 2 are formed on the end surfaces of the stator housing 3.

[0019] The bottom of the end cover 2 is detachably connected with a base 25 adapted to the aperture size of the through hole. The base 25 is adjusted through its axial position to achieve the end cover 2 to adapt to the opening of the through hole in a fully closed or semi-closed state. It should be noted that the fully closed state means that the bottom of the end cover 2 completely covers and wraps the opening of the through hole, so that the inside of the motor is in a closed state. This state can effectively prevent the motor from being affected by dust particles and other debris, thereby effectively improving its use efficiency, life and stability; and the relative semi-closed state can be understood as that after the end cover 2 is connected to the stator housing 3, a gap is reserved at the through hole, and the inside of the motor can achieve ventilation through the gap, while ensuring the normal operation stability of the motor, effectively improving the internal heat dissipation effect of the motor, combining the above two closed states to design a motor structure with a selectable state, thereby effectively improving its applicability, specifically:

[0020] Embodiment 1:

[0021] By changing the relative position of the base 25 connected to the sub-base 26, the full or semi-enclosed effect of the base 25 on the stator housing 3 is achieved. In this embodiment, the end cover 2 includes a bearing cover 22, a connecting portion 23 connected to the bottom of the bearing cover 22, and a wing span portion 24 formed at the outer edge of the connecting portion 23 and extending outward, the bearing cover 22 is arranged as a truncated cone structure and extends outward along the axial direction of the through hole, the connecting portion 23 annularly wraps the lower part of the bearing cover 22 and forms an annular groove with the side wall, and the wing span portion 24 is fixedly connected to the protrusion 32; it should be pointed out that the setting of the annular groove forms a sub-base 26 for connecting the base 25 on its axial opposite end face, and the base 25 is connected at a preset axial height position of the sub-base 26, thereby achieving the end cover 2 to adapt to the opening of the through hole in a non-fully enclosed or semi-enclosed state; as Figure 3 As shown, in a specific implementation, the base 25 is configured as an annular structure that matches the aperture profile of the through hole. Generally speaking, the through holes of motors are all circular holes, that is, the base 25 that matches therewith is a circular ring structure that matches the circular hole. At the same time, this embodiment does not limit the shape of the through hole opening. Similarly, there is no limitation on the shape of the base 25 that matches therewith. When a fully enclosed state is required, the base 25 is embedded in and connected to the sub-base 26, and the depth of the embedded connection is shallow. After the end cover 2 is fixed to the protrusion 32, the base 25 is axially embedded in the through hole and closes the opening of the through hole; conversely, when a semi-enclosed state is required, the base 25 is embedded in and connected to the sub-base 26 to a greater depth. After the end cover 2 is fixed to the protrusion 32, a reserved gap 4 is formed at the bottom edge of the base 25 from the opening of the through hole. It should be pointed out that the size of the reserved gap 4 can be adjusted manually, and the adjustment process can be implemented by manually adjusting the depth of the base 25 embedded in the sub-base 26. The larger the reserved gap 4, the better the ventilation and heat dissipation effect of the motor.

[0022] Embodiment 2:

[0023] By changing the fixed position of the end cover 2 relative to the plane where the positioning surface is located, the end cover 2 can be adapted to either a fully closed or semi-closed state for the opening of the through hole. In this embodiment, the end cover 2 includes a bearing cover 22, a connecting portion 23 connected to the bottom of the bearing cover 22, and a wing span portion 24 formed at the outer edge of the connecting portion 23 and extending outward. The bearing cover 22 is configured as a truncated cone structure and extends outward along the axial direction of the through hole. The connecting portion 23 annularly wraps the lower portion of the bearing cover 22 and forms an annular groove with the side wall thereof. The wing span portion 24 is fixedly connected to the convex portion 32. Specifically, by fixing the wing span portion 24 at the relative horizontal plane height of the convex portion 32, the end cover 2 can be effectively adapted to either a fully closed or semi-closed state for the opening of the through hole. Figure 4 As shown, during the implementation process, the edge of the wingspan portion 24 is fixedly connected to the protrusion 32 by bolts 5. When adjusting the relative horizontal plane height of the wingspan portion 24, a gasket 6 with a preset height can be pressed at the bottom of the wingspan portion 24 to adjust its height. The gasket 6 is fixedly connected between the positioning surfaces of the wingspan portion 24 and the protrusion 32 by bolts 5. It should be pointed out that when the gasket 6 is not used for positioning, the base 25 is embedded in the through hole and closes the opening of the through hole; after positioning with the gasket 6, a reserved gap 4 is formed at the bottom edge of the base 25 from the opening of the through hole. By using gaskets 6 of different thicknesses, reserved gaps 4 with different preset sizes can be formed, thereby effectively improving the use effect of the motor.

[0024] Embodiment three:

[0025] The present embodiment combines the first embodiment and the second embodiment, and improves on them. Specifically, the end cover 2 used in the present embodiment is the same as the end cover 2 in the first embodiment, and its base 25 is detachably connected to the sub-base 26, and the position of the base 25 can be adjusted by a preset embedding depth. Based on this, the edge of the wingspan portion 24 of the end cover 2 is also fixedly connected to the protrusion 32 by bolts 5, and a gasket 6 for adjusting the height position of the end cover 2 relative to the horizontal plane of the through hole opening is provided between the wingspan portion 24 and the protrusion 32. That is, the present embodiment achieves the effect of forming a reserved gap 4 through the joint action of the detachable base 25 and the gasket 6 with adjustable height. Compared with the first embodiment and the second embodiment, the combination of the two technical solutions used in the present embodiment effectively improves the adjustment application range of the end cover 2, so that the reserved gap 4 formed between the end cover 2 and the stator housing 3 has a larger range of adjustment space, which effectively improves its use effect.

[0026] Furthermore, the base 25 is welded to a preset position of the sub-base 26. When it is necessary to provide a reserved gap 4 of different states or sizes, it can be achieved by fixing the position of the base 25. The welding method adopted can effectively improve the connection strength between the base 25 and the sub-base 26.

[0027] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A motor, comprising a stator housing, a rotor and end covers sleeved at both ends of the rotor, wherein a through hole for assembling the rotor is formed at the central axis of the stator housing, characterized in that: A plurality of convex parts are formed along the axial direction at both end surfaces of the stator housing, and a plurality of the convex parts form positioning surfaces for fixing and connecting the end cover. The bottom of the end cover is detachably connected with a base adapted to the aperture size of the through hole, and the end cover can be adjusted in the axial position to achieve a fully closed or semi-closed state of the base to the opening of the through hole; The outer edge contour of the base is adapted to the inner wall contour of the through hole opening, and the fully closed state adaptation is achieved by the outer edge contour of the base fitting the inner wall contour of the through hole. After the base is axially displaced outward along the central axis of the through hole, a gap is reserved at the through hole after the end cover is connected to the stator housing, and a reserved gap of a preset size is formed at the bottom edge of the base and the opening of the through hole to achieve semi-closed state adaptation.

2. A motor according to claim 1, characterized in that: The end cover includes a bearing cover, a connecting portion connected to the bottom of the bearing cover, and a wing span portion formed at the outer edge of the connecting portion and extending outward. The bearing cover is arranged as a truncated cone structure and extends outward along the axial direction of the through hole. The connecting portion annularly wraps the lower portion of the bearing cover and forms an annular groove with its side wall. The wing span portion is fixedly connected to the convex portion.

3. A motor according to claim 2, characterized in that: The groove on the connecting portion has an axial reverse end surface formed with a sub-base for connecting to the base. The base is arranged at a preset axial height position of the sub-base and realizes the end cover to adapt to the opening of the through hole in a fully closed or semi-closed state.

4. The motor according to claim 1, characterized in that: The base realizes the adaptation of the end cover to the opening of the through hole in a fully closed state or a semi-closed state by fixing the end cover relative to the plane where the positioning surface is located.

5. The motor according to claim 2, characterized in that: Three convex parts are formed at both end surfaces of the stator housing and are evenly arranged on the end surfaces, and the wing span part is fixedly connected to the end surfaces of the convex parts.

6. A motor according to claim 3, characterized in that: The base is welded to a preset position of the auxiliary base.

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