Soft and hard rubber integrated motor cover

Abstract

The utility model discloses a soft and hard rubber integrated motor cover, which comprises a hard cover body and an elastic coating, the coating is coated on the outer wall of the cover body, and the bottom end of the coating protrudes out of the bottom end of the cover body along the axial direction. The lower portion of the coating is equivalent to an oil seal and can abut against the motor shell to play a sealing role, and the motor cover is integrally simplified in structure and convenient to assemble and form.

Description

Technical Field

[0001] This utility model relates to the field of motor device technology, specifically to a motor cover made of integrated soft and hard plastic. Background Technology

[0002] like Figure 3 As shown, a common motor cover includes a cover body 1, a wire sheath 3, and an oil seal 4. The wire sheath 3 is fixed at the top cavity of the cover body 1, and external wires pass through the wire sheath 3. The oil seal 4 is fixed at the bottom cavity of the cover body 1, and the oil seal abuts against the cavity wall of the motor housing to play a sealing role. The entire motor cover is composed of three parts, which is relatively troublesome to assemble and needs to be improved. Utility Model Content

[0003] To address at least one of the aforementioned technical deficiencies, this utility model provides the following technical solution:

[0004] This application discloses a motor cover that integrates hard and soft plastic, including a rigid cover body and an elastic covering layer. The covering layer covers the outer wall of the cover body, and the bottom end of the covering layer protrudes outward along the axial direction from the bottom end of the cover body.

[0005] This design improves the structure of the motor cover by using a rigid cover body and an elastic overlay. The lower part of the overlay acts as an oil seal, which can abut against the motor housing to provide a seal. The overall structure of the motor cover is simplified, making it easier to assemble.

[0006] Furthermore, multiple ridges for sealing are formed on the outer wall of the cover corresponding to the peripheral wall of the cover. The ridges extend circumferentially in a ring shape and the cover is located in the ring opening of the ridges. The ridges are distributed at intervals along the axial direction of the cover.

[0007] The raised ribs formed on the outer wall of the cladding are similar to sealing rings. When the motor housing is connected, the raised ribs abut against the cavity wall of the housing to play a sealing role. The raised ribs are directly formed on the cladding, which helps to further simplify the structure and facilitate assembly.

[0008] Furthermore, multiple protrusions for fixing are provided on the peripheral wall of the cover. The protrusions extend from the holes formed at the corresponding positions of the cover. When the motor cover is connected to the housing cavity, if a groove that matches the protrusion is formed on the wall of the housing cavity, the motor cover is pressed down to the housing cavity, and the protrusion is inserted into the groove, which facilitates assembly.

[0009] Furthermore, the cover is a stepped conical shape.

[0010] Furthermore, the covering is cylindrical, with a cylindrical body formed at the top opening of the covering and its cavity for the wire to pass through. The cylindrical body is located inside the top cavity of the cover, and the cylindrical body formed at the top opening of the covering acts as a wire sheath, which helps to further simplify the structure and improve the assembly speed.

[0011] Furthermore, the inner wall of the top cavity of the cover is provided with several connecting holes that communicate with the corresponding circumferential surface. The circumferential wall of the cylinder is correspondingly formed with a connecting body, and the other end of the connecting body passes through the connecting hole and is connected to the outer coating of the cover. If the coating is formed on the cover by injection molding, some material passes through the connecting hole during the injection molding process and is formed into a connecting body after curing. This configuration helps to improve the stability of the connection between the cylinder and the cover.

[0012] Furthermore, the inner wall of the cover is provided with a plurality of outwardly protruding fixing posts, at least at the end of which is located in a fixing hole formed on the peripheral wall of the cover, which helps to improve the stability of the connection between the cover and the cover.

[0013] Furthermore, the cover is made of hard plastic, and the coating is made of soft plastic.

[0014] For the overlay, it can be molded independently and then fitted onto the cover, or it can be directly injection molded onto the cover. Preferably, the overlay is injection molded onto the cover to simplify the assembly process and increase the assembly speed.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The design of the motor cover in this utility model consists of a rigid cover body and an elastic coating, which simplifies the overall structure, reduces assembly steps, and increases assembly speed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of the motor cover in Embodiment 1;

[0019] Figure 2 This is a schematic diagram of the overall structure of the motor cover;

[0020] Figure 3 This is a schematic diagram of the existing motor cover structure;

[0021] The attached figures are labeled as follows:

[0022] 1. Cover; 2. Covering layer; 3. Wire sheath; 4. Oil seal; 10. Protrusion; 21. Cylinder; 22. Connector; 23. Rib; 24. Outer protrusion; 25. Fixing post. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1 , Figure 2 As shown, this example illustrates a motor cover made of integrated hard and soft plastic, comprising a rigid cover body 1 and an elastic covering layer 2. The cover body 1 is molded from hard plastic, and in this example, it is shown in a common stepped conical configuration. The covering layer 2 is molded from soft plastic and covers the outer wall of the cover body 1. The bottom end of the covering layer 2 protrudes axially outward from the bottom end of the cover body 1. The lower part of the covering layer 2 acts similarly to an oil seal, abutting against the cavity wall of the motor housing when mated with it to improve sealing.

[0026] To improve sealing, such as Figure 1 As shown, multiple sealing ridges 23 can be formed on the outer wall of the covering layer 2 corresponding to the perimeter of the cover body 1, such as... Figure 1 The three raised ribs 23 shown are distributed at intervals along the axial direction of the cover 1. The raised ribs 23 extend in a ring shape in the circumferential direction and the cover 1 is located in the ring opening of the raised ribs 23. The raised ribs play a similar role to a sealing ring. The raised ribs abut against the cavity wall of the outer shell to help further improve the sealing performance.

[0027] For fixing the motor cover to the motor housing, common methods include fitting and snap-fitting. In this example, multiple protrusions 10 are formed on the peripheral wall of the cover 1 for fixing. These protrusions can be columnar, arc-shaped, or ribbed, and have through holes at corresponding positions on the cover. The ends of the protrusions 10 extend from the through holes. When the motor cover and the housing are joined, the protrusions engage with the slots formed on the cavity wall of the housing, thus stably fixing the motor cover and the motor housing together. The configuration of the protrusions 10 extending from the through holes of the cover 2 also helps to improve the stability of the connection between the cover and the cover. Alternatively, multiple protruding fixing posts 25 can be formed on the inner wall of the cover 2, and fixing holes can be formed on the peripheral wall of the cover 1. The ends of the fixing posts 25 are located in the fixing holes. This structure further enhances the stability of the connection between the cover and the cover.

[0028] For the connection between the cover and the cover, if the pre-formed cover is cylindrical, it is then fitted onto the cover. Preferably, the cover 2 is directly injection molded onto the cover 1, and the cover 2 is cured into a cylindrical shape on the cover 1 with the inner wall of the cover adhering to the peripheral wall of the cover. This method helps to simplify the assembly process and improve assembly efficiency.

[0029] In this example, a cylindrical body 21 is formed at the top opening of the cover 2, and its cavity is used for the wire to pass through. The cylindrical body 21 is located inside the top cavity of the cover 1. The cylindrical body 21 at the top opening of the cover 2 serves as a wire sheath. The one-piece molding structure of the cover helps to further simplify the structure and improve the assembly speed.

[0030] To improve the connection stability between the cylinder and the cover, in this example, several connecting holes are formed on the inner wall of the top cavity of the cover 1, which are connected to the corresponding circumferential surface. The circumferential wall of the cylinder is correspondingly formed with a connector 22, and the other end of the connector 22 passes through the connecting hole and is connected to the outer coating of the cover. When the coating is injection molded on the cover, some material passes through the connecting hole and is formed into a connector after curing. Under this structure, the connection between the cylinder and the cover cavity is more stable.

[0031] In addition, the inner diameter of the bottom of the motor cover can be increased under this configuration, further reducing the impact on the placement of the motor welding feet.

[0032] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A motor cover of soft and hard rubber integration, characterized in that, The cover (1) is of hard type and the elastic coating (2) is arranged on the outer wall of the cover (1), and the bottom end of the coating (2) is outwardly protruded from the bottom end of the cover (1).

2. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: A plurality of sealing protrusions (23) are formed on the outer wall of the coating (2) corresponding to the peripheral wall of the cover (1), the protrusions (23) are annularly extended along the circumferential direction, the cover (1) is arranged in the annular opening of the protrusions (23), and the protrusions (23) are spacedly arranged along the axial direction of the cover (1).

3. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: A plurality of fixing protrusions (10) are outwardly arranged on the peripheral wall of the cover (1), the protrusions (10) are protruded from the holes formed on the corresponding positions of the coating (2).

4. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: The cover (1) is of stepped conical cylinder shape.

5. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: The coating (2) is of cylinder shape, a cylinder body (21) is formed on the top end of the coating (2), and the cylinder cavity is used for passing the wire.

6. The soft and hard rubber integrated motor cover according to claim 5, characterized in that: A plurality of connecting holes are arranged on the inner wall of the top end cavity of the cover (1) and are communicated with the corresponding peripheral surface, the peripheral wall of the cylinder body (21) is correspondingly formed with connecting bodies, the other ends of the connecting bodies (22) are passed through the connecting holes and are connected with the coating (2) outside the cover.

7. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: A plurality of outwardly protruded fixing columns (25) are arranged on the inner wall of the coating (2), and at least the end portions of the fixing columns (25) are arranged in the fixing holes formed on the peripheral wall of the cover (1).

8. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: The cover (1) is formed by hard rubber, and the coating (2) is formed by soft rubber.

9. The soft and hard rubber integrated motor cover according to claim 1, characterized in that: The coating (2) is injection molded on the cover (1).

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