CN110022023B

CN110022023B - Housing assembly, assembly method thereof and electric driver

Info

Publication number: CN110022023B
Application number: CN201810014299.4A
Authority: CN
Inventors: 高迪峰; J.施莱格尔
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2018-01-08
Filing date: 2018-01-08
Publication date: 2023-06-09
Anticipated expiration: 2038-01-08
Also published as: CN110022023A

Abstract

The present invention relates to a housing assembly and a method of assembling the same, and an electric drive, the housing assembly comprising: a cover with a plurality of extensions; a body with a profile matching the cap, the cap and body together surrounding the cavity, and the length of the extension being configured such that, when assembled, the bottom of the extension protrudes relative to the bottom of the body; wherein an aperture is provided in the extension, a first end of the aperture being in fluid communication with the cavity and a second end of the aperture being at the bottom and in fluid communication with ambient air. The electric driver, the shell assembly and the assembly method thereof have the advantages of simple structure, reliable installation, convenient maintenance and the like. By adopting the housing assembly and the assembly method thereof, the housing assembly and the electric driver can be quickly manufactured, the occurrence of overvoltage is avoided, and the cost is reduced.

Description

Housing assembly, assembly method thereof and electric driver

Technical Field

The present invention relates to the field of assembly tools, and more particularly, to a housing assembly that enables quick and convenient assembly. The invention also relates to an assembly method for the above-mentioned housing assembly, and an electric drive.

Background

It is known that automotive components typically include several housing assemblies therein. These housing assemblies are used to form cavities that house various automotive components. For example, a wiper motor for driving a wiper blade is typically disposed in a cavity within the housing assembly.

Existing housing assemblies typically include a body and a cover that collectively enclose and form an interior cavity. The body and the cover may be manufactured separately and then assembled together by a jig or clip. For example, the cover may be configured as a plate and secured to the body by a plastic or metal clip. In some existing solutions, the clamp may be integrally formed with the cover.

However, existing clamps require a certain pressure to hold the body and cover, thus easily creating an overpressure condition during assembly, resulting in stressing the housing assembly and reducing the useful life of the assembly. Furthermore, the clip can be manufactured separately and then assembled to the body and cover. Such an assembly method not only increases the process flow and time, but also increases the manufacturing costs.

It is therefore desirable to provide a new housing assembly and method of assembling the same, and an electric drive that avoids and overcomes the problems of the prior art.

Disclosure of Invention

It is an object of the present invention to provide a housing assembly with a clamp integrally formed with the cover and capable of providing quick and secure assembly. Another object of the present invention is to provide a method of assembling the above housing assembly. It is a further object of the present invention to provide an electric drive comprising a housing assembly assembled using the assembly method described above.

The invention aims at realizing the following technical scheme:

a housing assembly, comprising:

a cover with a plurality of extensions;

a body with a profile matching the cap, the cap and body together surrounding the cavity, and the length of the extension being configured such that, when assembled, the bottom of the extension protrudes relative to the bottom of the body;

wherein the extension is provided with a hole therein. The first end of the aperture is in fluid communication with the cavity and the second end of the aperture is located at the bottom and in fluid communication with ambient air.

Optionally, the number of extensions is three or more, and the extensions are uniformly or non-uniformly distributed around the perimeter of the cover.

Optionally, the number of extensions is three or more, and the extensions are disposed within the perimeter of the cover and with through holes through the body.

Optionally, the material comprising the body has a higher melting point than the material comprising the cap.

Alternatively, the cover is made of plastic and the body is made of metal or plastic.

A method of assembly for a housing assembly, optionally comprising the steps of:

1): providing the above-described housing assembly;

2): covering the cover over the body such that bottoms of the plurality of extensions protrude relative to the bottom of the body;

3): providing a ram and heating the ram to a temperature above the melting point of the material comprising the cap and below the melting point of the material comprising the body;

4): fitting the ram onto the bottom of the extension such that the bottom melts and reforms under pressure into a melt; and

5): the ram was removed and the melt was allowed to cool.

Optionally, in step 4), the ram is positioned such that a portion of the melt is attached to the body and another portion encloses the aperture.

Optionally, in step 4), multiple rams are employed to heat multiple extensions simultaneously.

Optionally, in step 4), a single ram is used to heat the plurality of extensions in sequence.

Optionally, an adhesive and/or sealant is applied at the junction of the cap and the body prior to step S2.

An electric drive, comprising:

the housing assembly is assembled by the assembly method;

an armature disposed in the cavity; and

one or more shifting components disposed in the cavity.

The invention has the beneficial effects that: the electric driver, the shell assembly and the assembly method thereof have the advantages of simple structure, reliable installation, convenient maintenance and the like. By adopting the housing assembly and the assembly method thereof, the housing assembly can be manufactured quickly, the occurrence of overpressure is avoided, and the cost is reduced.

Drawings

The invention will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the invention. Moreover, unless specifically indicated otherwise, the drawings are merely intended to conceptually illustrate the compositions or constructions of the described objects and may contain exaggerated representations, and the drawings are not necessarily drawn to scale.

FIG. 1 is an exploded view of one embodiment of a housing assembly of the present invention.

Fig. 2 is a partial cross-sectional view of the embodiment of fig. 1 when assembled.

FIG. 3 is a partial vertical view of the cross section A-A of the embodiment shown in FIG. 2.

Fig. 4 is a schematic illustration of the processing of the embodiment of fig. 2.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the invention.

First, it should be noted that terms of top, bottom, upward, downward, etc. are defined herein with respect to the directions in the respective drawings, which are relative concepts and thus can be changed according to the different positions and different practical states in which they are located. These and other directional terms should not be construed as limiting terms.

Furthermore, it should also be noted that any individual feature described or implicit in the embodiments herein, or any individual feature shown or implicit in the drawings, can still be combined between these features (or their equivalents) to obtain other embodiments of the invention not directly mentioned herein.

It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

Fig. 1 is a cross-section of one embodiment of the electric drive of the present invention. Wherein the electric drive 10 comprises: a housing assembly including a cover 100, a body 200, and a cavity surrounded by the cover 100 and the body 200; an armature 120 disposed in the cavity 300; and one or more shifting members 130 disposed in the cavity 300. Wherein, the casing subassembly includes: a cover 100 with a plurality of extensions 110; a body 200 with a profile that matches the cover 100, wherein the plurality of extensions 110 are configured to match the edges of the body 200.

Optionally, at least some of the plurality of extensions may be disposed within the vertical profile of the cover 100 and configured to pass through a through-hole in the body 200.

Alternatively, the number of the extension portions 110 is three or more.

Optionally, the extensions 110 are evenly distributed around the perimeter of the cover 100.

Optionally, the extensions 110 are unevenly distributed about the perimeter of the cover 100.

Alternatively, the cover 100 is made of a hot melt material, such as plastic.

Alternatively, the body 200 is made of metal, such as an aluminum alloy.

Alternatively, the material constituting the body 200 has a higher melting point than the material constituting the cover 100.

Fig. 2 is a partial cross-sectional view of the embodiment of fig. 1 when assembled. Wherein the cover 100 is configured to cover the upper side of the body 200, and the side of the extension 110 is configured to match the edge of the body 200. Wherein the cover 100 encloses the cavity 300 together with the body 200, and the length of the extension 110 is configured to be greater than the height of the body 200 such that the bottom 112 of the extension 110 protrudes with respect to the bottom of the body 200.

Further, an aperture 111 is provided in the extension 110. A first end of the bore 111 is in fluid communication with the chamber 300 and a second end of the bore 111 is in fluid communication with ambient air such that air within the chamber 300 can be expelled through the bore 111 to the ambient air during assembly.

Optionally, the first end of the aperture 111 is configured to face the bottom of the lid 100. However, a person skilled in the art may set a suitable orientation according to the actual needs.

Optionally, the second end of the bore 111 is configured to be located on the bottom 112 of the extension 110. However, other orientations may be set by those skilled in the art as desired. For example, the second end of the bore 111 may be located on a side of the extension 110.

Alternatively, the hole 111 extends in the entire length direction of the extension 110.

FIG. 3 is a partial vertical view of the cross section A-A of the embodiment shown in FIG. 2. As shown, the bore 111 has a generally circular cross-section.

Alternatively, aperture 111 may have other cross-sectional shapes as well, including but not limited to oval, rectangular, rounded rectangular, triangular, pentagonal, hexagonal, or combinations thereof.

Fig. 4 is a schematic illustration of the processing of the embodiment of fig. 2. Wherein the ram 400 is heated to a temperature higher than the melting point of the material comprising the cap 100 and lower than the melting point of the material comprising the body 200, and the hot ram 400 is in contact with the bottom 112 of the extension 110. Under the heating of the ram 400, the bottom 112 of the extension 110 melts and forms a melt 112a.

Wherein the ram 400 is positioned such that at least a portion of the melt 112a extends toward the body 200 and is ultimately attached to the body 200 after cooling. Another portion of the melt 112a will close the second end of the aperture 111, isolating the cavity 300 from ambient air.

Alternatively, the melt 112a is configured in a spherical or frustoconical shape.

The invention also relates to an assembly method for a housing assembly, comprising the steps of:

s1: providing a housing assembly according to the disclosure above;

s2: covering the cover 100 over the body 200 such that the bottoms 112 of the plurality of extensions 110 protrude with respect to the bottom of the body 200;

s3: providing a ram 400, and heating the ram 400 to a temperature higher than the melting point of the material comprising the cap 100 and lower than the melting point of the material comprising the body 200;

s4: fitting the ram 400 onto the bottom 112 of the extension 110 such that the bottom 112 melts and reforms under pressure into a melt 112a; and

s5: the ram 400 is removed and the melt 112a is allowed to cool.

Optionally, in step S3, the press head 400 is provided on a hot press.

Alternatively, in step S4, the position of the ram 400 is set such that a part of the melt 112a is attached to the body 200 and another part closes the hole 111.

Optionally, in step S4, multiple rams 400 are employed to heat multiple extensions 110 simultaneously.

Alternatively, in step S4, a single ram 400 is used to sequentially heat the plurality of extensions 110.

Optionally, an adhesive and/or sealant is applied at the junction of the cap 100 and the body 200 prior to step S2.

The invention also relates to an electric drive comprising: the housing assembly is assembled by the assembly method;

an armature 120 disposed in the cavity 300; and

one or more shifting members 130 disposed in the cavity 300.

One skilled in the art can readily apply the housing assembly of the present invention to other devices in light of the present disclosure.

By adopting the above-described housing assembly and assembly method, the housing assembly can be assembled through a hot press molding process so that the extension 110 is not in an overpressure state, thereby improving reliability of the product. Furthermore, the assembly method of the present invention requires only hot press molding, which not only accelerates manufacturing efficiency. And reduces manufacturing costs.

The present specification discloses the present invention with reference to the accompanying drawings and also enables one skilled in the art to practice the invention, including making and using any devices or systems, selecting suitable materials, and using any incorporated methods. The scope of the invention is defined by the claims and encompasses other examples that will occur to those skilled in the art. Such other examples should be considered to be within the scope of protection as determined by the claimed subject matter, so long as such other examples include structural elements that are not literally different from the claimed subject matter, or include equivalent structural elements with insubstantial differences from the literal languages of the claimed subject matter.

Claims

1. A housing assembly, comprising:

a cover (100) with a plurality of extensions (110);

-a body (200) with a profile matching the cover (100), the cover (100) and the body (200) together enclosing a cavity (300), and the length of the extension (110) being configured such that, when assembled, the bottom (112) of the extension (110) protrudes with respect to the bottom of the body (200);

wherein a hole (111) is provided in the extension (110), a first end of the hole (111) being in fluid communication with the cavity (300) and a second end of the hole (111) being located at the bottom (112) and in fluid communication with ambient air.

2. The housing assembly according to claim 1, wherein the number of extensions (110) is three or more and is evenly or unevenly distributed around the periphery of the cover (100).

3. The housing assembly according to claim 1, wherein the number of extensions (110) is three or more, and the extensions (110) are arranged within the perimeter of the cover (100) and pass through holes in the body (200).

4. A housing assembly according to claim 2 or 3, characterized in that the material constituting the body (200) has a higher melting point than the material constituting the cover (100).

5. The housing assembly according to claim 4, wherein the cover (100) is made of plastic and the body (200) is made of metal or plastic.

6. A method of assembling a housing assembly, comprising the steps of:

s1: providing a housing assembly according to any one of claims 1-5;

s2: -overlaying the cover (100) over the body (200) such that the bottom (112) of the plurality of extensions (110) protrudes relative to the bottom of the body (200);

s3: providing a ram (400) and heating the ram (400) to a temperature higher than the melting point of the material comprising the cap (100) and lower than the melting point of the material comprising the body (200);

s4: fitting the ram (400) onto the bottom (112) of the extension (110) such that the bottom (112) melts and reforms under pressure into a melt (112 a); and

s5: the ram (400) is removed and the melt (112 a) is cooled.

7. The assembly method according to claim 6, characterized in that in step S4, the ram (400) is positioned such that a part of the melt (112 a) is attached to the body (200) and another part closes the hole (111).

8. The assembling method according to claim 6, wherein in step S4, a plurality of pressing heads (400) are used to heat the plurality of extensions (110) simultaneously, or a single pressing head (400) is used to heat the plurality of extensions (110) in sequence.

9. Method of assembly according to claim 6, characterized in that before step S2, an adhesive and/or a sealant is applied at the junction of the cover (100) and the body (200).

10. An electric drive, comprising:

the housing assembly according to any one of claims 1-5, assembled using the assembly method according to any one of claims 6-9;

an armature disposed in the cavity (300); and

one or more shifting parts disposed in the cavity (300).