Motor shell

Abstract

The utility model relates to the technical field of motors, and provides a motor shell, which comprises a front cover and a rear cover, the front cover is provided with a disc part and a first bearing mounting part; the first bearing mounting part and the disc part are integrally arranged; the rear cover is provided with a wall part; one end of the wall part is integrally provided with an extension part, and the other end is integrally provided with a second bearing mounting part; the second bearing mounting part is positioned in the center of the wall part; a plurality of first bending parts are uniformly arranged on the disc part in the circumferential direction and / or a plurality of second bending parts are uniformly arranged on the inner circumference of the extension part; when the disc part is provided with the first bending part, the first bending part and the inner periphery of the extension part are installed in a matched mode. And when the second bending part is arranged on the inner circumference of the extension part, a plurality of through grooves are uniformly formed in the disc part in the circumferential direction, and the second bending part and the through grooves are installed in a matched mode. According to the utility model, the front cover and the rear cover are in whole-circumference fit, so that the concentric precision of the motor shell can be improved, and the product quality and the yield of the motor are improved.

Description

Technical Field

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

[0002] The motor housing structure with two upper and lower bearings is generally installed by installing two covers together, and a bearing is installed on each cover. Since the two covers are installed together, the two covers need to be positioned and installed so that the two bearings are concentric. Currently, three convex humps are punched on one cover, and three positioning holes are left on the other cover. The axial positioning and the concentricity of the bearings on the two covers are ensured by the positioning method of the convex humps and the positioning holes.

[0003] However, this positioning method of determining the circumference by the convex hull and the positioning hole has a poor fit, and the error in positioning the center of the circle by three points is large; since two covers are also required for fit, the fit between the two covers is poor; the errors in mold making and motor assembly are relatively large, and after being assembled into the motor state, the concentricity of the front and rear bearings is relatively poor. Utility Model Content

[0004] The utility model mainly solves the technical problems that the motor housing in the prior art has large positioning errors by means of convex humps and positioning holes, the fit between the two covers is relatively poor, the errors in mold making and motor assembly are relatively large, and after being assembled into the motor state, the concentricity of the front and rear bearings is relatively poor. A motor housing is proposed, which is positioned in the form of an arc, and the front cover and the rear cover are matched in a full circle to make the two bearings concentric, which can improve the concentricity accuracy of the motor housing and improve the product quality and yield rate of the motor.

[0005] The utility model provides a motor housing, comprising: a front cover and a rear cover;

[0006] The front cover has a disc portion and a first bearing mounting portion; the first bearing mounting portion is integrally arranged with the disc portion and is located at the center of the disc portion;

[0007] The rear cover has a wall portion; one end of the wall portion is integrally provided with an extension portion, and the other end is integrally provided with a second bearing mounting portion; the second bearing mounting portion is located at the center of the wall portion, and the extension portion is attached to the disc portion;

[0008] The disc portion is evenly provided with a plurality of first bending portions in the circumferential direction and / or the inner circumference of the extension portion is evenly provided with a plurality of second bending portions;

[0009] When the disc portion is provided with a first bending portion, the first bending portion is mounted in cooperation with the inner periphery of the extension portion;

[0010] When the second bending portion is provided on the inner circumference of the extension portion, the disc portion is evenly provided with a plurality of through slots in the circumferential direction, and the second bending portion is installed in cooperation with the through slots.

[0011] Preferably, when the first bending portion and the second bending portion exist at the same time, the first bending portion and the through groove are staggered on the same circumference.

[0012] Preferably, a plurality of buckles are evenly arranged on the periphery of the disc portion, and the plurality of buckles are engaged with the extension portion.

[0013] Preferably, a plurality of ears are arranged on the outer periphery of the disc portion, and mounting holes are reserved in the ears.

[0014] Preferably, the first bearing mounting portion protrudes from the front cover, and the second bearing mounting portion protrudes from the rear cover.

[0015] Preferably, the rear cover has a recessed structure on the outer periphery of the second bearing mounting portion.

[0016] Preferably, a plurality of inner recesses are evenly arranged on the outer periphery of the extension portion, and the inner recesses correspond to the positions of the ears.

[0017] Preferably, a convex point is arranged on the disk portion, and a positioning hole is arranged on the extension portion; the convex point and the positioning hole are installed in coordination.

[0018] The utility model provides a motor housing, and three bending positioning setting forms can be selected, all of which match the front cover and the rear cover in a whole circle; the first is to tightly fit the inner circumference of the extension part with the arc-shaped first bending part, and use two circles for matching, so as to ensure that the first bearing mounting part and the second bearing mounting part on the front cover and the rear cover are concentric; the second is to insert the arc-shaped second bending part into the through groove, so that the second bending part inserted into the through groove is located on the same circumference, so as to ensure that the first bearing mounting part and the second bearing mounting part on the front cover and the rear cover are concentric; the third is that the first and second bending positioning setting forms exist at the same time; the three bending positioning setting forms all use arc form positioning to make the two bearings concentric, so that the concentricity accuracy of the motor housing can be better improved through matching, higher dimensional accuracy can be achieved, the product quality and yield rate of the motor can be improved, and the motor size testing and motor production mold adjustment can be facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the motor housing provided by the utility model;

[0020] Figure 2 This is a structural schematic diagram of the first front cover provided by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the first back cover provided by the utility model;

[0022] Figure 4 This is a structural schematic diagram of a second front cover provided by the utility model;

[0023] Figure 5 It is a structural schematic diagram of a second back cover provided by the utility model.

[0024] Figure numerals: 1, front cover; 2, rear cover; 101, disk; 102, buckle; 103, bending portion; 104, mounting hole; 105, ear; 106, first bearing mounting portion; 107, through groove; 201, wall; 202, extension portion; 203, second bearing mounting portion; 204, second bending portion; 205, recessed portion; 206, recessed structure. DETAILED DESCRIPTION

[0025] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0026] like Figure 1 As shown, a motor housing provided by an embodiment of the utility model comprises: a front cover 1 and a rear cover 2. The front cover 1 and the rear cover 2 are installed together.

[0027] The front cover 1 comprises a disk portion 101 and a first bearing mounting portion 106 ; the first bearing mounting portion 106 is integrally provided with the disk portion 101 and is located at the center of the disk portion 101 .

[0028] The rear cover 2 has a wall portion 201; an extension portion 202 is integrally provided at one end of the wall portion 201, and a second bearing mounting portion 203 is integrally provided at the other end; the second bearing mounting portion 203 is located at the center of the wall portion 201, and the extension portion 202 is fitted together with the disk portion 101, so that the front cover 1 and the rear cover 2 are installed together.

[0029] The first bearing mounting portion 106 and the second bearing mounting portion 203 are located on the same axis; the first bearing mounting portion 106 protrudes from the front cover 1, and the second bearing mounting portion 203 protrudes from the rear cover 2. The rear cover 2 has a recessed structure 206 on the outer periphery of the second bearing mounting portion 203. Such a structural arrangement can stably fix the bearing.

[0030] The disk portion 101 is evenly provided with a plurality of first bending portions 103 in the circumferential direction and / or the inner circumference of the extension portion 202 is evenly provided with a plurality of second bending portions 204. The first bending portion 103 and the second bending portion 204 can be in the form of arcs to achieve circumferential positioning. The bending positioning arrangement of the utility model can be in the following three forms.

[0031] The first type: Figure 2-3 As shown, when the disc portion 101 is provided with the first bending portion 103, the first bending portion 103 is installed in cooperation with the inner circumference of the extension portion 202. The arc-shaped first bending portion 103 is tightly fitted with the inner circumference of the extension portion 202, and two circumferences are used for cooperation to ensure that the first bearing mounting portion 106 and the second bearing mounting portion 203 on the front cover 1 and the rear cover 2 are concentric, and then the two bearings are concentric, so that the cooperation can better improve the concentricity accuracy of the motor housing.

[0032] The second type: Figure 4-5 As shown, when the second bending portion 204 is provided on the inner circumference of the extension portion 202, the disc portion 101 is evenly provided with a plurality of through slots 107 in the circumferential direction, and the second bending portion 204 is installed in cooperation with the through slots 107. The arc-shaped second bending portion 204 is inserted into the through slot 107, so that the second bending portion 204 is inserted into the through slot 107 and is located on the same circumference, ensuring that the first bearing mounting portion 106 and the second bearing mounting portion 203 on the front cover 1 and the rear cover 2 are concentric, and then the two bearings are concentric, so that the concentricity accuracy of the motor housing can be better improved.

[0033] The third type: when the first bending portion 103 and the second bending portion 204 exist at the same time, the first bending portion 103 and the through groove 107 are staggered on the same circumference. The above first and second bending positioning settings exist at the same time, which can ensure that the first bearing mounting portion 106 and the second bearing mounting portion 203 on the front cover 1 and the rear cover 2 are concentric, and then make the two bearings concentric, so that the concentricity accuracy of the motor housing can be better improved.

[0034] On the basis of the above solution, a plurality of buckles 102 are evenly arranged on the periphery of the disk portion 101, and the plurality of buckles 102 are engaged with the extension portion 202, so that the installation structure of the front cover 1 and the rear cover 2 is stable. A plurality of ears 105 are arranged on the periphery of the disk portion 101, and mounting holes 104 are reserved in the ears 105, so as to facilitate the installation of the finished motor on the application equipment.

[0035] In addition, a plurality of inner recesses 205 are evenly arranged on the outer circumference of the extension 202, and the inner recesses 205 correspond to the positions of the ears 105. The disk 101 is provided with convex points, and the extension 202 is provided with positioning holes; the convex points and the positioning holes are installed in coordination; based on the above scheme, the utility model can also retain the convex points and the positioning holes as circumferential positioning, and can also set other axial positioning structures to increase the positioning effect.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A motor housing, characterized in that: include: A front cover (1) and a rear cover (2); The front cover (1) comprises a disk portion (101) and a first bearing mounting portion (106); the first bearing mounting portion (106) is integrally provided with the disk portion (101) and is located at the center of the disk portion (101); The rear cover (2) comprises a wall portion (201); an extension portion (202) is integrally provided at one end of the wall portion (201), and a second bearing mounting portion (203) is integrally provided at the other end; the second bearing mounting portion (203) is located at the center of the wall portion (201), and the extension portion (202) is fitted together with the disk portion (101); The disk portion (101) is evenly provided with a plurality of first bending portions (103) in the circumferential direction and / or the inner circumference of the extension portion (202) is evenly provided with a plurality of second bending portions (204); When the disk portion (101) is provided with a first bent portion (103), the first bent portion (103) is mounted in cooperation with the inner periphery of the extension portion (202); When the second bending portion (204) is provided on the inner circumference of the extension portion (202), the disk portion (101) is evenly provided with a plurality of through grooves (107) in the circumferential direction, and the second bending portion (204) is installed in coordination with the through grooves (107).

2. The motor housing according to claim 1, characterized in that: When the first bending portion (103) and the second bending portion (204) exist at the same time, the first bending portion (103) and the through groove (107) are staggered on the same circumference.

3. The motor housing according to claim 1 or 2, characterized in that: A plurality of buckles (102) are evenly arranged on the outer periphery of the disc portion (101), and the plurality of buckles (102) are engaged with the extension portion (202).

4. The motor housing according to claim 1 or 2, characterized in that: A plurality of ears (105) are arranged on the outer periphery of the disk portion (101), and mounting holes (104) are reserved in the ears (105).

5. The motor housing according to claim 1 or 2, characterized in that: The first bearing mounting portion (106) protrudes from the front cover (1), and the second bearing mounting portion (203) protrudes from the rear cover (2).

6. The motor housing according to claim 5, characterized in that: The rear cover (2) has a recessed structure (206) on the outer periphery of the second bearing mounting portion (203).

7. The motor housing according to claim 5, characterized in that: A plurality of inner recesses (205) are evenly arranged on the outer periphery of the extension portion (202), and the positions of the inner recesses (205) correspond to those of the ear portions (105).

8. The motor housing according to claim 5, characterized in that The disk portion (101) is provided with a convex point, and the extension portion (202) is provided with a positioning hole; the convex point and the positioning hole are installed in coordination.

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