KR100570455B1 - Tube mounting - Google Patents

Abstract

The present invention relates to a tube plate 10 that includes motor plates 14 and 46, which motor plates 14 and 46 have openings 16 and gearbox domes 40 for the gearbox dome 40. ) Is provided with screw holes 18 and recesses 20 and 52 arranged around the mounting tube 12 and 50 to be fixed to the recesses 20 and 52.

On the other hand, the motor plates 14 and 46 are made of steel plate members, and the recesses 20 and 52 pass between the one or more screw holes 18 and the opening 16 for the gearbox dome 40, and the openings. Clips 24 and 48 are mounted to fit 16 and transverse to recesses 20 and 52, which clips 24 and 48 arcuate symmetrically to recesses 20 and 52. It is proposed to surround the installation tubes (12, 50).

Tube plate, motor plate, gearbox dome, recess, clip,

Description

Tube mounting

The present invention relates to a tube plate according to the higher concept of claim 1. Tube plates of this kind are especially used for wiper systems in automobiles.

In a car wiper system, a wiper support (or wiper carrier), ie a tube plate, is fixed to the car body. The tube plate is provided with a motor plate, and the motor plate is equipped with a wiper drive including a wiper operating motor and a gearbox assembled to the wiper drive. The driven shaft of the gearbox is supported by the dome of the gearbox, which is generally driven by the crank and the link bar, and the crank is firmly connected to the drive shaft of the respective window cleaning device. The gearbox housing is usually connected to the motor plate with three screws, so that the mounting tube is fixed to the motor plate. The screws are distributed and mounted around the gearbox dome, first of which are inserted into the screw holes of the motor plate and inserted into the screw support members of the driven side housing cover. Therefore, the gearbox housing is fixed to the motor plate by the screw supporting member.

The drive shaft of the wiper is supported by the wiper bearing, and the housing of the wiper bearing is fixed to the end of the tube plate or integral with each other. The tube plates are fixed directly to the vehicle body via bearing housings or through fastening eyelets formed in the bearing housings, plates and motor plates.

Tube plates are disclosed from German Utility Model DE GM 74 34 119, which is made of square tubes and welded together with the plates used as motor plates. Tube plates of this type or tube tubes are light and very robust. In addition, straight carrier tubes are preferred for reasons of cost because no pre-bending is required.

Furthermore, a tube plate has been disclosed from EP 04 09 944 B1, in which case the motor plate is joined by a positive connection with the tube member. In another embodiment, the motor plate may be integrated with the cover of the gearbox housing.

EP 0 781 691 A1 shows a tube plate comprising a motor plate and a mounting tube. The motor plate has an indentation on the side facing the mounting tube, the mounting tube is placed in the recess, and the tube plate and the mounting tube are welded to each other up and down by projection welding. The shape of the cross section of the recess coincides with the shape of the cross section of the mounting tube, and also surrounds the mounting tube in a circumferential range of about 180 degrees. Therefore, since the motor plate is welded to the mounting tube with a slight welding point only at the side of the mounting tube, the force generated when the wiper is actuated is disproportionately distributed between the joints of the two members, so that the local member High stress occurs. Furthermore, there is a clear bending moment due to the gap between the mounting tube and the driven shaft.

Furthermore, European Patent EP 0 689 975 A1 discloses a tube plate including a motor plate. In this case, the tube plate is composed of two symmetrical members, each of which has a recess in which the mounting tube is embedded on the side facing the mounting tube. Each recess encloses the mounting tube in a circumferential range of about 180 degrees, so that the two recesses enclose the mounting tube over its entire circumference. When assembled, two members of the motor plate are arranged around the mounting tube and are connected, for example mechanically, by bonding or by heat bonding. At the same time, the mounting tube is fixed to the motor plate by material coupling by shape coupling and / or adhesion in the circumferential and axial directions. In addition, the two members of the motor plate may be combined into one member as one embodiment. In this regard, attention should be paid to the distance between the driven shaft and the mounting tube.

The tube plate of the present application is advantageous in that the mounting tube is enclosed on both sides, and the generated action force is distributed evenly on the surface of the motor plate not only through the recess but also through the clip. This advantage is possible because the recesses are traversed instead of passing over the edge of the motor plate. Thus, a clip can be formed inside the motor plate, which helps to distribute the flow of action forces occurring on the various sides of the recess.

According to the present invention, the motor plate is a steel plate member. The recess extends in particular between the at least one screw hole and the opening of the gearbox dome. Therefore, the installation tube is placed close to the driven shaft of the gearbox, so that only a slight bending moment occurs. A clip is formed across the recess adjacent the opening of the gearbox dome, which clips arcuate symmetrically with the recess to surround the mounting tube. By surrounding the installation tube in this way, the installation tube is supported close to the entire circumference thereof. Therefore, the action force generated when the wiper operates is distributed over most of the circumference of the mounting tube in the region of the gearbox dome, so that the net bending area is partially converted into tensile stress and compressive stress. Despite this proper induction of forces (ie, dispersion and conversion of forces), the motor plate is very simple in construction and can also be manufactured as a single part that can be manufactured from forged parts that do not have an undercut or double wall area. It is a member.

The motor plate and clip surround the mounting tube on opposite sides in alternation, and at the same time have a relatively small area compared to the overall coupling area. The motor plate is thus simply or controlled by gluing or welding, for example projection welding, to formally engage the mounting tube.

In order to increase the strength, for example, the joining tube and thus the concave and / or clip of the motor plate are shaped in a cross section different from the circular cross section to reinforce the material coupling. In order to further increase the strength, a slit is provided on the side of the clip, and the end of the gap is rounded. Therefore, notching stress (ie stress concentration) is reduced here, and fracture caused by stress and fatigue is prevented in this area.

Another advantage comes from the following description. In the drawings embodiments of the invention are shown. The drawings, description and claims contain numerous features and combinations.

1 is a cross-sectional view of a motor plate fixed to a mounting tube along line I-I in FIG. 2;

2 is a plan view of the motor plate without the installation tube.

Figure 3 shows another embodiment of the mounting tube with a polygonal cross section with respect to Figure 1;

The tube plate 10 includes an installation tube 12 and a motor plate 14 fixed thereto. The tube plate 10 has an opening 16, through which the gearbox dome 40 of the gearbox 36 is inserted. The driven shaft 42 is supported by the gearbox dome 40. Here, the external shape of the gear box 36 flanged to the wiper motor, which is not shown in detail, is indicated by a dotted line. The gearbox 36 is fixed to the motor plates 14 and 46 by screws. In order to fix this motor plate, the screw holes 18 distributed around the opening 16 of the gearbox dome 40 are used. The motor plates 14 and 46 are made of steel sheet members, the edges 22 of which are bent upwards to form one reinforcing rib.

A recess 20, 52 is inserted between the opening 16 for the gearbox dome 40 and one or more threaded holes 18 in which the mounting tubes 12, 50 are embedded. Clips 24, 48 are formed adjacent the opening 16 across the recesses 20, 52. The clips 24 and 48 are arched symmetrically with the recesses 20 and 52 so as to surround the installation tubes 12 and 50 on opposite sides of the recesses 20 and 52. The mounting tubes 12, 50 are material-bonded, for example connected to the motor plates 14, 46 by gluing or welding. The embodiment shown in FIG. 2 for projection welding has a welding projection 44 in the region of the recess 20 and the clip 24. The edge 22 is located on the side of the motor plate 14, 46 opposite the clip 24, and protrudes to the closed side of the recess 20, 52.

The clip 24 is cut by the steel plate of the motor boards 14 and 46 and made by plastic working. In this process, a minimum steel sheet member is used in the region of the opening 16 for the gearbox dome 40. Clearances 26, 28 are provided on the side of the clip 24, and the ends 30, 32 of the clearances 26, 28 are rounded off because of cracking caused by stress in these areas. To avoid the danger. The clip 24 is connected to the motor plate 14 only on one side, and may be slightly elastically bent so that the mounting tubes 12, 50 can be assembled. The mounting tubes 12, 50 are then joined with the mounting tubes 12, 50 by a forced fit, which is then advantageous for welding.

The motor plate 46 of FIG. 3 is distinguished from the motor plate 14 of FIGS. 1 and 2 in which the recess 52, the clip 48, and the installation tube 50 are a polygonal cross section. Therefore, the motor plate 46 is coupled to the installation tube 50 in the form of coupling. Thus, this bond can be reinforced by a material bond formula.

Another improvement for improving the flow of the action force, especially in large motor plates, is achieved when a number of clips (not shown here) are formed. This improvement advantageously alternately surrounds the installation tube.

[Related code]

10: tube plate

12; 50: mounting tube

14; 46: motor plate

16: opening

18: screw hole

20; 52: recessed portion

22: edge

24; 48: clip

26: niche

30; 32: end

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34: area

36: gearbox

38: screw support member

40: gearbox dome

42: driven shaft

44: welding protrusion

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Claims (9)

The gear box 36 may be fixed and provided with motor plates 14 and 46 having receiving portions in the form of recesses 20 and 52, and the installation tubes 12 and 50 are embedded in the recesses. In the tube plate 10 for the windshield wiper system, The motor plates 14 and 46 are formed of a steel plate member, and the recesses 20 and 52 are disposed across the motor plates 14 and 46, and the recesses 20 and 52 are formed of the motor plate 14, 46, the clips 24, 48 formed by cutting from the motor plates 14, 46 across the recesses 20, 52 are arcuately symmetrical with the recesses 20, 52, so that the installation tube ( 12, 50, characterized in that the tube plate. 2. The screw plate (18) according to claim 1, wherein the motor plate is formed around the gearbox (36) and openings (16) for the gearbox dome (40) of the gearbox (36) to secure the gearbox (36). Wherein the recesses 20, 52 extend between one or more threaded holes 18 and an opening 16 for the gearbox dome 40, the clips 24, 48 having an opening 16. Tube plate, characterized in that disposed adjacent to. 2. A tube plate according to claim 1, wherein the mounting tube (12) has a circular cross section and is surrounded by a clip (24) over its circumferential region. Tube clip, characterized in that the clip (24, 48) comprises a free end towards the opening (16). 2. Tube plate according to claim 1, characterized in that the motor plate (14, 46) is materially coupled to the installation tube (12, 50). The tube plate according to claim 1, wherein the installation tube (50) has a cross section that is not circular and is coupled to the motor plate (46) in a shape coupling manner. 2. Tube plate according to claim 1, characterized in that the edge (22) of the motor plate (14, 46) is bent upwards towards the closed side of the recess (20, 52). 2. Tube plate according to claim 1, characterized in that the clip (2, 48) is elastically embedded. A tube plate (10), characterized in that there are gaps (26, 28) on the sides of the clips (24, 48), and the end portions (30, 32) of the gaps are rounded. The gear box 36 may be fixed and provided with motor plates 14 and 46 having receiving portions in the form of recesses 20 and 52, and the installation tubes 12 and 50 are embedded in the recesses. In the tube plate 10 for the windshield wiper system, The motor plates 14 and 46 are formed of steel plate members, and the recesses 20 and 52 are formed of steel plate members across the motor plates 14 and 46 and across the recesses 20 and 52. The cut clips 24, 48 are arched symmetrically in the recesses 20, 52, surrounding the installation tubes 12, 50, and the motor plate for the gearbox dome 40 of the gearbox 36. A tube plate having an opening (16), wherein the clips (24, 48) have their free ends facing the opening (16). The gear box 36 may be fixed and provided with motor plates 14 and 46 having receiving portions in the form of recesses 20 and 52, and the installation tubes 12 and 50 are embedded in the recesses. In the tube plate 10 for the windshield wiper system, The motor plates 14 and 46 are formed of steel plate members, and the recesses 20 and 52 are formed of steel plate members across the motor plates 14 and 46 and across the recesses 20 and 52. The cut clips 24 and 48 are arched symmetrically in the recesses 20 and 52 to surround the installation tubes 12 and 50, and the gaps 26 and 28 are rounded at the ends 30 and 32 thereof. And the clips (24, 48) arranged in the lateral direction.

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