CN211844357U

CN211844357U - Casing subassembly, gear box, wiper and vehicle

Info

Publication number: CN211844357U
Application number: CN202020004038.7U
Authority: CN
Inventors: 徐鹏; 戴宇; 陈国珠; 赵湛智
Original assignee: Bosch Automotive Products Changsha Co Ltd
Current assignee: Bosch Automotive Products Changsha Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-11-03
Anticipated expiration: 2030-01-02

Abstract

The application provides a housing assembly, a gear box, a wiper blade and a vehicle. This casing subassembly is used for holding the transmission part of wiper, and it includes: a body configured to enclose a cavity; one or more through-holes configured to communicate from an exterior of the body to the cavity; and wherein one or more grooves are provided on the inner wall of the through-hole, the grooves extending from the exterior of the body to the cavity. The shell assembly, the gear box, the windscreen wiper and the vehicle have the advantages of being simple in structure, easy to manufacture, convenient to install and the like, the range of applicable parts can be enlarged, and maintenance and manufacturing cost are reduced.

Description

Casing subassembly, gear box, wiper and vehicle

Technical Field

The present application relates to the field of wiper blade constructions. More particularly, the present application relates to a housing assembly which is intended to provide a motorized and flexible assemblability. The application also relates to a gear box comprising the shell assembly, a windscreen wiper comprising the shell assembly or the gear box, and a vehicle comprising the shell assembly or the gear box or the windscreen wiper.

Background

A housing assembly is often provided in a wiper blade to accommodate a drive motor and associated drive mechanism. The transmission mechanism may comprise, for example, a worm gear mechanism or the like. The output shaft of the worm gear needs to extend through the housing assembly itself and is typically sleeved with a bushing and seal member. During assembly, air inside the housing assembly needs to be exhausted, and therefore a passage for exhausting air needs to be provided between the output shaft of the worm wheel and the housing assembly.

In the related wiper blade, the exhaust passage is provided on an outer surface of the bushing. For example, the outer surface of the liner may be provided with recessed grooves to provide gas passages. The liner is typically formed by sintering a metal such as iron or nickel. Existing bushing designs increase manufacturing costs and require the preparation of a dedicated bushing for assembly. The preparation, storage and installation of the special bushings requires additional costs.

Accordingly, there is a continuing need for new housing assemblies, gear boxes, wipers, and vehicle solutions. It is desirable that the new solution is able to provide an efficient assembly solution.

SUMMERY OF THE UTILITY MODEL

It is an object of an aspect of the present application to provide a housing assembly that provides an integrated exhaust passage so that conventional bushings may be used to assemble a wiper blade. It is an object of another aspect of the present application to provide a gearbox including the above-described housing assembly. Another aspect of the present application is directed to a wiper blade including the above-described housing assembly or the above-described gear case. It is an object of another aspect of the present application to provide a vehicle comprising the above-described housing assembly or the above-described gear box or the above-described wiper blade.

The purpose of the application is realized by the following technical scheme:

a housing assembly for receiving a transmission member of a wiper blade, the housing assembly comprising:

a body configured to enclose a cavity;

one or more through-holes configured to communicate from an exterior of the body to the cavity; and is

Wherein one or more grooves are provided on the inner wall of the through-hole, the grooves extending from the exterior of the body to the cavity.

In the above housing assembly, optionally, the plurality of grooves are arranged along a periphery of an inner wall of the through hole.

In the above housing assembly, optionally, the plurality of grooves are substantially uniformly arranged on the periphery of the inner wall of the through hole.

In the above housing assembly, optionally, the groove is configured to extend along: the grooves may be formed by straight lines, diagonal lines, broken lines, spiral lines, grid lines, or combinations thereof, and the grooves may be configured to have one of the following cross-sections: circular, rectangular, triangular, oval, trapezoidal.

In the above housing assembly, optionally, the through-hole is configured to have one of the following cross-sections: circular, rectangular, triangular, oval, trapezoidal.

In the above housing assembly, optionally, the housing assembly is configured to be die cast or injection molded with an aluminum alloy or a zinc alloy.

A gearbox, comprising:

the above-mentioned housing assembly;

a worm gear with a shaft adapted to be inserted into the through hole from the cavity;

a bushing configured to be fitted into the through hole from an outside of the body and to be sleeved over the shaft; and

a sealing cover configured to fit into the through hole from the outside of the body and to be fitted over the shaft.

In the above-described gear box, optionally, the outer periphery of the bush is configured to be smooth.

A wiper blade comprises the shell assembly or the gear box.

A vehicle comprises the shell assembly, the gear box or the windscreen wiper.

The shell assembly, the gear box, the windscreen wiper and the vehicle have the advantages of being simple in structure, easy to manufacture, convenient to use and the like, the range of applicable parts can be enlarged, and maintenance and manufacturing cost are reduced.

Drawings

The present application will now be described in further detail with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will appreciate that the drawings are designed solely for the purposes of illustrating preferred embodiments and that, accordingly, should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are intended to be conceptual in nature or in construction of the described objects and may contain exaggerated displays. The figures are also not necessarily drawn to scale.

FIG. 1 is an exploded view of part of the components of an embodiment of the gearbox of the present application.

Fig. 2 is a perspective view of the housing of the embodiment of fig. 1.

Fig. 3 is a partial enlarged view of the housing shown in fig. 2.

Detailed Description

Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the descriptions are illustrative only, exemplary, and should not be construed as limiting the scope of the application.

First, it should be noted that the terms top, bottom, upward, downward, and the like as used herein are defined with respect to the orientation in the drawings. These terms of orientation are relative terms and can vary with the different positions and different states of use that the component is in. Therefore, the directional terminology should not be construed as limiting.

Furthermore, it should also be noted that for any single technical feature described or implicit in the embodiments herein, or any single technical feature shown or implicit in the drawings, it is possible to continue to combine these technical features (or their equivalents) to obtain other embodiments not directly mentioned herein.

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

FIG. 1 is an exploded view of part of the components of an embodiment of the gearbox of the present application. A portion of the components of a gearbox, including the housing assembly, are shown in FIG. 1. Specifically, housing assembly 100 is provided with a through-hole 110, through-hole 110 being sized to accommodate insertion of shaft 210 of worm gear 200 therein. The shaft 210 of the worm wheel 200 is provided to have a length capable of passing through the entire through-hole and may extend from one side to the other side of the housing assembly 100. The gearbox also provides a bushing 300 and a seal cover 400. The liner 300 and the seal cover 400 are each configured in a generally cylindrical configuration and also provided with a bore therethrough. In assembly, the bushing 300 and the seal cap 400 are respectively sleeved over the shaft 210 of the worm gear 200. As shown, the worm wheel 200, the bush 300 and the seal cover 400 are seated in place along the axial direction of the through-hole 110.

The housing assembly 100 may be used to house the transmission components of a wiper blade including, but not limited to, worm gears and worm mechanisms, etc.

In one embodiment of the present application, the bushing 300 is sized to fit between the shaft 210 and the inner wall of the through-hole 110, and the bushing 300 may be configured to have a smooth outer surface so as to substantially fill the space between the shaft 210 and the inner wall of the through-hole 110. The bushing 300 may be an optional existing bushing component, and may also be made from a metal such as iron or nickel through a sintering process. In addition, the end surface of the bushing 300 may be provided with a recess to accommodate the mounting requirements of different components.

In one embodiment of the present application, the sealing cover 400 is made of rubber. In other embodiments of the present application, the seal cap 400 may also be made of other suitable materials. The sealing cap 400 is configured to be fitted into the through-hole 110 from the outside of the body.

Fig. 2 is a perspective view of the housing of the embodiment shown in fig. 1, and fig. 3 is a partially enlarged view of the housing shown in fig. 2. The housing 100 may include a body configured to have any desired shape and, along with other components, enclose a cavity 101, not fully shown. Thus, the body defines a cavity 101 inside it, and the space outside the outer surface of the body is hereinafter referred to as the exterior of the body. The body may be provided with one or more through-holes 110. The through hole 110 is configured to extend substantially in the axial direction and communicate from the cavity 101 all the way to the outside of the body.

The through-hole 110 may be configured to have a substantially uniform cross-section, and the cross-section may have a rectangular, circular, triangular, elliptical, trapezoidal, or the like shape. The through-hole 110 may have a constant cross-section throughout the axial direction, or may have a varying cross-section. That is, different shapes of cross-sections may be provided at different locations of the through-hole 110, and shape transition sections may be provided between the different shapes of cross-section sections.

One or more grooves 111 may be provided on the inner wall of the through-hole 110. As shown, the groove 111 extends in the axial direction along the inner wall of the through-hole 110 so as to communicate from the cavity 101 all the way to the outside of the body. The grooves 111 may be configured to extend generally in a straight line and may also be configured to have other shapes including, but not limited to, diagonal lines, broken lines, helical lines, mesh lines, combinations thereof, and the like. In addition, a plurality of grooves may be distributed in a circumferential direction of the inner wall of the through-hole 110. The plurality of grooves may be configured to be substantially uniformly distributed or may be configured to have a non-uniform distribution pattern. The slots 111 may also be configured with a cross-section having a particular shape including, but not limited to, rectangular, circular, triangular, oval, trapezoidal, and the like.

In the above embodiments, the housing assembly 100 may be configured to be formed of an aluminum alloy or a zinc alloy through a die casting or injection molding process. The groove 111 may be formed directly by die-casting or may be obtained by machining on a green body obtained by die-casting.

In use, the slots 111 provide a flow path for air within the chamber 101, allowing assembly of the components to proceed smoothly while venting air from the chamber 101. By providing the groove 111 on the inner wall of the through-hole 110, the housing assembly and the gear box according to an embodiment of the present application can be assembled using a conventional bushing or a bushing having a smooth outer surface, and there is no need to specially prepare, store, and install a special bushing with a vent groove. Accordingly, the housing assembly and gearbox according to the present application can provide a wider range of component adaptability, improve component reusability, and reduce manufacturing costs.

The present application further provides a gearbox including the above housing assembly that can house components such as an electric drive, a worm and gear mechanism, and the like. The housing assembly 100 according to the present application may form part of a gearbox outer housing.

The application also provides a windscreen wiper comprising the shell assembly or the gear box, and a vehicle comprising the shell assembly or the gear box or the windscreen wiper. The wiper blade may include a transmission mechanism such as a four-bar structure, and may be mounted on a front windshield or a rear windshield of a vehicle.

This written description discloses the application with reference to the drawings, and also enables one skilled in the art to practice the application, including making and using any devices or systems, selecting appropriate materials, and using any incorporated methods. The scope of the present application is defined by the claims and encompasses other examples that occur to those skilled in the art. Such other examples should be considered within the scope defined by the claims as long as they include structural elements that do not differ from the literal language of the claims, or that they include equivalent structural elements with insubstantial differences from the literal language of the claims.

Claims

1. A housing assembly for receiving a transmission member of a wiper blade, the housing assembly (100) comprising:

a body configured for enclosing a cavity (101);

one or more through-holes (110), said through-holes (110) being configured to communicate from outside of said body to said cavity (101); and is

Wherein one or more grooves (111) are provided on the inner wall of the through-hole (110), the grooves (111) extending from the outside of the body to the cavity (101).

2. The housing assembly according to claim 1, wherein a plurality of grooves (111) are arranged along the circumference of the inner wall of the through hole (110).

3. The housing assembly according to claim 2, characterized in that a plurality of grooves (111) are arranged substantially uniformly on the circumference of the inner wall of the through hole (110).

4. A housing assembly according to any one of claims 1-3, characterized in that the groove (111) is configured to extend along: straight lines, oblique lines, broken lines, spiral lines, grid lines or combinations thereof, and the grooves (111) are configured to have one of the following cross-sections: circular, rectangular, triangular, oval, trapezoidal.

5. The housing assembly according to any of claims 1-3, wherein the through-hole (110) is configured with one of the following cross-sections: circular, rectangular, triangular, oval, trapezoidal.

6. The housing assembly of any of claims 1-3, wherein the housing assembly (100) is configured to be die cast or injection molded from an aluminum alloy or a zinc alloy.

7. A gearbox, comprising:

the housing assembly of any of claims 1-6;

a worm gear (200) with a shaft (210) adapted to be inserted into the through hole (110) from the cavity (101);

a bushing (300) configured to be fitted into the through hole (110) from an outside of the body and to be sleeved over the shaft (210); and

a sealing cover (400) configured to fit into the through hole (110) from outside the body and to be fitted over the shaft (210).

8. Gearbox according to claim 7, characterised in that the outer circumference of the bushing (300) is configured smooth.

9. A wiper blade characterized in that it comprises a housing assembly according to any one of claims 1-6, or a gearbox according to claim 7 or 8.

10. A vehicle comprising a housing assembly according to any one of claims 1-6, or comprising a gearbox according to claim 7 or 8, or comprising a wiper blade according to claim 9.