A motor housing and a motor

Abstract

This utility model discloses a motor housing and a motor. The motor housing includes a housing body with a shaft hole. The housing body is composed of an upper shell and a lower shell, and the mating surface of the upper and lower shells passes through the center of the shaft hole and extends along the axial direction of the shaft hole. The upper and lower shells together form a receiving cavity. The shaft hole is located on the front end plate and / or rear end plate of the housing body and communicates with the receiving cavity. A bearing groove is provided on the outer periphery of the shaft hole, and a connection position is provided at the edge of the mating surface of the upper and lower shells. The motor housing of this utility model is composed of two halves, and the mating surface extends along the axis of the rotor and passes through the rotation center of the rotor. Therefore, the shaft hole position is divided into upper and lower halves, which facilitates the installation of bearings (the bearings are pre-fitted with the rotor, then placed directly on one shell, and then the other shell is covered. The two shells are fixed by a connector to complete the installation).

Description

Technical Field

[0001] This utility model relates to a motor housing structure, and more particularly to a motor housing and a motor. Background Technology

[0002] The current motor housing is composed of a front housing and a rear housing. The rotor and stator are housed within the cavity formed by the front and rear housings. The rotor has a shaft, and the end faces of the front and rear housings have shaft holes corresponding to both ends of the shaft. Bearings are installed in these shaft holes to mate with the shaft. Since the bearings are mounted on the inner end faces of the front and rear housings, and to ensure their fixation, the bearing mounting grooves at the inner ends of the shaft holes must have an interference fit with the bearings. Given this, tooling equipment is required to assemble the bearings with the motor housing. Furthermore, the shaft and the inner ring of the bearing also require an interference fit. Utility Model Content

[0003] One objective of this utility model is to provide a motor housing with a reasonable structure and convenient installation.

[0004] One objective of this utility model is achieved as follows: An electric motor housing includes a housing body with a shaft hole. The housing body is characterized by being composed of an upper housing and a lower housing joined together, with the mating surfaces of the upper and lower housings passing through the center of the shaft hole and extending along its axial direction. Both the upper and lower housings are integrally formed from a wall panel, a front end plate, and a rear end plate. The front end plate and the rear end plate are respectively connected to the front and rear ends of the wall panel. The front end plate, the rear end plate, and the wall panel together form a concave cavity. The concave cavities of the upper and lower housings together form a receiving cavity. The shaft hole is located on the front end plate and / or the rear end plate and communicates with the receiving cavity. A bearing groove is provided on the outer periphery of the shaft hole. A connection position is provided at the edge of the mating surfaces of the upper and lower housings.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the shaft hole includes a front shaft hole and a rear shaft hole, which are respectively disposed on the front end plate and the rear end plate; the front end plates of the upper housing and the lower housing are provided with front semi-circular grooves on the upper and lower sides corresponding to the front shaft hole, and / or the rear end plates of the upper housing and the lower housing are provided with rear semi-circular grooves on the upper and lower sides corresponding to the rear shaft hole; the front semi-circular grooves on the upper and lower sides form a front bearing groove, and the rear semi-circular grooves on the upper and lower sides form a rear bearing groove.

[0006] As a further solution, multiple grooves are circumferentially distributed on the inner arc surface of both the front and rear semicircular grooves. Since the housing is injection molded, these grooves serve two purposes: firstly, they prevent the problem of uncontrollable deformation during plastic shaping due to excessive material thickness; secondly, by providing grooves, the semicircular grooves have room for deformation, allowing for more effective bearing clamping.

[0007] As a further embodiment, the connection position includes a through hole and a screw hole, which are respectively provided on the upper housing and the lower housing and correspond to each other one by one. The through hole allows the screw to pass through, and the screw hole is screwed to the screw; or, the connection position includes two through holes respectively provided on the upper housing and the lower housing, with the corresponding two through holes allowing the screw to pass through and connect to the nut.

[0008] As a further embodiment, the upper housing and the lower housing are provided with outward flanges around the openings of their concave cavities, and the connecting position is provided on the outward flanges; when the connecting position includes a through hole and a screw hole, a protrusion extends from the back of the outward flange of the lower housing, and the screw hole extends into the protrusion.

[0009] As a further solution, the inner wall of the concave cavity is provided with a stress relief groove corresponding to the axial direction of the screw hole of the protrusion. Since a screw is screwed into the protrusion, if the inner diameter of the screw hole is not well controlled, it can easily lead to deformation of the protrusion, and the deformation position is uncertain, which can easily affect the appearance of the product; by setting a stress relief groove, external deformation can be avoided.

[0010] As a further embodiment, the upper and lower housings have reinforcing ribs and / or connecting posts on their wall panels, front end plate, and / or rear end plate surfaces. The reinforcing ribs enhance the housing's strength, while the connecting posts facilitate connection of the housing to the application environment and allow for the attachment of other components, circuit boards, etc.

[0011] As a further embodiment, the upper and lower shells have skirts on the front and rear edges of the wall panels, and the two ends of the skirts are connected to the outward flanges. The front and / or rear plates of the upper and lower shells have heat dissipation holes on their surfaces, and the heat dissipation holes are connected to the receiving cavity.

[0012] One objective of this utility model is to provide a motor that has a reasonable structure, is easy to install, and is reliable in operation.

[0013] One objective of this utility model is achieved as follows: An electric motor includes a stator and a rotor, the rotor being rotatably disposed at the center of the stator, a rotating shaft being disposed at the center of the rotor, the motor housing being included, the stator and rotor being disposed within the receiving cavity, the stator being fixedly fitted with the inner wall of the receiving cavity, and the rotating shaft extending out from the shaft hole.

[0014] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, a limiting part is provided at the inner end of the shaft corresponding to the shaft hole, and a bearing is provided on the outside of the shaft. The bearing blocks the limiting part and is supported in the shaft hole. The outer periphery of the bearing is clamped between the upper housing and the lower housing.

[0015] The beneficial effects of this utility model are as follows: The motor housing of this utility model is composed of upper and lower halves. The splicing surface extends along the axis of the rotor and passes through the center of rotation of the rotor. Therefore, the shaft hole position is divided into upper and lower halves, which facilitates the installation of bearings (the bearings are pre-fitted with the rotor, then placed directly on one housing, and then the other housing is covered. The two housings are fixed by the connector to complete the installation). Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the motor housing at one angle in this utility model.

[0017] Figure 2 This is a schematic diagram of the motor housing from another angle in this utility model.

[0018] Figure 3 This is a schematic diagram of the lower shell structure of this utility model.

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

[0020] Figure 5 This is a schematic diagram of the motor structure at one angle in this utility model.

[0021] Figure 6 This is a schematic diagram of the motor structure from another angle in this utility model.

[0022] Figure 7 This is a schematic diagram of the disassembled structure of the motor in this utility model.

[0023] Figure 8 for Figure 7 Another structural diagram from a different angle.

[0024] Figure 9 This is a schematic diagram of the main structure of the motor in this utility model.

[0025] Figure 10 for Figure 9 A schematic diagram of the AA cross-sectional structure.

[0026] Figure 11 This is a schematic diagram of the left-side structure of the motor in this utility model.

[0027] Figure 12 for Figure 11 Schematic diagram of the BB cross-section structure. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments: See Figures 1-4As shown, a motor housing includes a housing body 1 with a shaft hole. The housing body 1 is assembled from an upper housing 11 and a lower housing 12. The mating surfaces of the upper housing 11 and the lower housing 12 pass through the center of the shaft hole and extend along the axial direction of the shaft hole. The upper housing 11 and the lower housing 12 are both integrally formed from a wall panel, a front end plate 16, and a rear end plate 18. The front end plate 16 and the rear end plate 18 are respectively connected to the front and rear ends of the wall panel. The front end plate 16, the rear end plate 18, and the wall panel together form a cavity 19. The cavity 19 of the upper housing 11 and the lower housing 12 together form a receiving cavity 10. The shaft hole is provided on the front end plate 16 and the rear end plate 18 and communicates with the receiving cavity 10. A bearing groove is provided on the outer periphery of the shaft hole. A connection position is provided at the edge of the mating surface of the upper housing 11 and the lower housing 12.

[0029] Specifically: the shaft hole includes a front shaft hole 165 and a rear shaft hole 185, which are respectively disposed on the front end plate 16 and the rear end plate 18; the front end plate 16 of the upper housing 11 and the lower housing 12 is provided with a front semi-circular groove 161 on the upper and lower sides corresponding to the front shaft hole 165, and the rear end plate 18 of the upper housing 11 and the lower housing 12 is provided with a rear semi-circular groove 181 on the upper and lower sides corresponding to the rear shaft hole 185; the front semi-circular grooves 161 on the upper and lower sides form a front bearing groove, and the rear semi-circular grooves 181 on the upper and lower sides form a rear bearing groove.

[0030] Multiple pits C are circumferentially distributed on the inner arc surfaces of the front semicircular groove 161 and the rear semicircular groove 181. The front axle hole 165 and the rear axle hole 185 are coaxially arranged.

[0031] The connection position includes a through hole and a screw hole. The through hole and the screw hole are respectively provided on the upper housing 11 and the lower housing 12, and correspond to each other one by one. The through hole allows the screw to pass through, and the screw hole is screwed to the screw.

[0032] The upper housing 11 and the lower housing 12 are provided with outward flanges around the openings of their concave cavities 19, and the connecting position is provided on the outward flange 13; when the connecting position includes a through hole and a screw hole, a protrusion extends from the back of the outward flange 13 of the lower housing 12, and the screw hole extends into the protrusion.

[0033] The inner wall of the concave cavity 19 is provided with a stress relief groove 191 corresponding to the screw hole of the protruding post.

[0034] The upper housing 11 and the lower housing 12 have front skirts 15 and rear skirts 17 on their front and rear ends respectively. The two ends of the skirts are connected to the outward flanges 13. The front end plate 16 and the rear end plate 18 of the upper housing 11 and the lower housing 12 are respectively provided with front heat dissipation holes 163 and rear heat dissipation holes 183. The heat dissipation holes are connected to the receiving cavity 10.

[0035] The upper shell 11 and the lower shell 12 have reinforcing ribs and connecting columns on their wall panels, front end plate 16 and rear end plate 18.

[0036] Specifically, the front skirt 15 is further provided with a flange 153 to improve its rigidity. The top of the upper shell 11 wall panel is provided with upper reinforcing ribs 112 and upper connecting posts 111 arranged in a mesh pattern, and the bottom of the lower shell 12 wall panel is provided with upper reinforcing ribs 122 and upper connecting posts 121 arranged in a mesh pattern. The front end plate 16 is provided with a front connecting post 162, and the rear end plate 18 is provided with a rear connecting post 182. The front end plate 16 is provided with multiple parallel front reinforcing ribs 164, and front heat dissipation holes 163 are distributed on the sides of the front reinforcing ribs 164; the rear end plate 18 is provided with multiple parallel rear reinforcing ribs 184, and rear heat dissipation holes 183 are distributed on the sides of the rear reinforcing ribs 184.

[0037] To enhance the clamping force of the two semi-circular grooves in the bearing slot, connecting positions are distributed on the outer flange of the end plate corresponding to both sides of the bearing slot. The skirt edge is provided with clearance openings 151 and 171 corresponding to the connecting positions, facilitating the insertion of a screwdriver.

[0038] Combination Figures 5 to 12 As shown, an electric motor includes a stator 3 and a rotor 4. The rotor 4 is rotatably disposed at the center of the stator 3. A rotating shaft 2 is provided at the center of the rotor 4. The motor includes the aforementioned housing. The stator 3 and the rotor 4 are disposed within the receiving cavity 10. The stator 3 is fixedly engaged with the inner wall of the receiving cavity 10. The rotating shaft 2 extends out from the shaft hole.

[0039] The inner wall of the receiving cavity 10 is provided with limiting ribs 192 corresponding to the front and rear sides of the stator 3. The stator 3 is limited between the two limiting ribs 192, forming a limiting and fixing fit. The outer periphery of the stator 3 is also provided with a limiting groove 31 axially. The inner wall of the lower housing 12 is provided with a transverse rib 193 corresponding to the two limiting ribs 192. The transverse rib 193 is limited and fitted with the limiting groove 31, further preventing the stator 3 from rotating relative to the housing.

[0040] A limiting part is provided at the inner end of the shaft 2 corresponding to the shaft hole. A bearing is provided on the outside of the shaft 2. The bearing blocks the limiting part and is supported in the shaft hole. The outer periphery of the bearing is clamped between the upper housing 11 and the lower housing 12.

[0041] Specifically, the limiting part of the rotating shaft 2 is a retaining ring or a step (in this embodiment, it is a retaining ring, not shown in the figure), and the outer circumference of the rotating shaft 2 is provided with a retaining groove 21 corresponding to the retaining ring. The retaining ring and the retaining groove 21 are engaged to form the limiting part. There are two bearings, namely a front bearing 5 and a rear bearing 6.

[0042] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A motor housing, comprising a housing body (1), the housing body (1) having a shaft hole, characterized in that: The outer shell body (1) is assembled from an upper shell (11) and a lower shell (12). The mating surfaces of the upper shell (11) and the lower shell (12) pass through the center of the shaft hole and extend along the axial direction of the shaft hole. The upper shell (11) and the lower shell (12) are both integrally formed from a wall panel, a front end plate (16) and a rear end plate (18). The front end plate (16) and the rear end plate (18) are respectively connected to the front and rear ends of the wall panel. The front end plate (16), the rear end plate (18) and the wall panel together form a concave cavity (19). The concave cavities (19) of the upper shell (11) and the lower shell (12) together form a receiving cavity (10). The shaft hole is set on the front end plate (16) and / or the rear end plate (18) and communicates with the receiving cavity (10). A bearing groove is provided on the outer periphery of the shaft hole. A connection position is provided at the edge of the mating surface of the upper shell (11) and the lower shell (12).

2. The motor housing according to claim 1, characterized in that: The shaft hole includes a front shaft hole (165) and a rear shaft hole (185), which are respectively disposed on the front end plate (16) and the rear end plate (18); the front end plate (16) of the upper housing (11) and the lower housing (12) are provided with front semi-circular grooves (161) on the upper and lower sides corresponding to the front shaft hole (165), and / or, the rear end plate (18) of the upper housing (11) and the lower housing (12) are provided with rear semi-circular grooves (181) on the upper and lower sides corresponding to the rear shaft hole (185); the front semi-circular grooves (161) on the upper and lower sides form a front bearing groove, and the rear semi-circular grooves (181) on the upper and lower sides form a rear bearing groove.

3. The motor housing according to claim 2, characterized in that: Multiple pits (C) are circumferentially distributed on the inner arc surfaces of the front semicircular groove (161) and the rear semicircular groove (181).

4. The motor housing according to claim 1, characterized in that: The connection position includes a through hole and a screw hole, which are respectively provided on the upper housing (11) and the lower housing (12) and correspond to each other. The through hole allows the screw to pass through, and the screw hole is screwed to the screw. Alternatively, the connection position includes two through holes respectively provided on the upper housing (11) and the lower housing (12), which allow the screw to pass through and connect to the nut.

5. The motor housing according to claim 4, characterized in that: The upper housing (11) and the lower housing (12) are provided with an outer flange around the opening of their cavity (19), and the connection position is provided on the outer flange (13); when the connection position includes a through hole and a screw hole, a protrusion extends from the back of the outer flange (13) of the lower housing (12), and the screw hole extends into the protrusion.

6. The motor housing according to claim 5, characterized in that: The inner wall of the concave cavity (19) is provided with a stress relief groove (191) corresponding to the screw hole of the protruding post.

7. The motor housing according to claim 5, characterized in that: The upper shell (11) and lower shell (12) have reinforcing ribs and / or connecting columns on their surfaces, including the wall panels, front end plate (16) and / or rear end plate (18).

8. The motor housing according to claim 5, characterized in that: The upper shell (11) and the lower shell (12) have skirts on the front and rear edges of the wall panels. The two ends of the skirts are connected to the outward flange (13). The front end plate (16) and / or rear end plate (18) of the upper shell (11) and the lower shell (12) have heat dissipation holes on their surfaces. The heat dissipation holes are connected to the receiving cavity (10).

9. An electric motor comprising a stator (3) and a rotor (4), wherein the rotor (4) is rotatably disposed at the center of the stator (3), and a rotating shaft (2) is provided at the center of the rotor (4), characterized in that: The motor housing includes any one of claims 1-8, wherein the stator (3) and rotor (4) are disposed in the receiving cavity (10), the stator (3) is fixedly engaged with the inner wall of the receiving cavity (10), and the rotating shaft (2) extends out from the shaft hole.

10. The motor according to claim 9, characterized in that: The rotating shaft (2) is provided with a limiting part at the inner end of the shaft hole, and a bearing is provided on the outside of the rotating shaft (2). The bearing blocks the limiting part and is supported in the shaft hole. The outer periphery of the bearing is clamped between the upper housing (11) and the lower housing (12).

Images