KR20010020305A - Bracket consisting of tube - Google Patents

Abstract

The present invention relates to a tubular bracket (10) provided with motor brackets (14, 44) with recesses (20), said recesses (20) running along one side (26), where the bracket tube ( 12 and 42 are inserted and supported.

The corners of the motor brackets 14, 44 are divided into tabs 28, 30, 32, 46, 48 in the transverse direction of the recesses in the region of the recesses 20, the tabs being bracket tubes 12, 42. One side and the opposite side of) are alternately wrapped in a part of outer diameter.

Description

Bracket consisting of tube

In the vehicle wiper device, the wiper holder is fixed to the vehicle body by a bracket, and when the wiper holder is formed of a tube, it is fixed to the vehicle body of the vehicle by a tubular bracket. In the bracket there is a wiper drive with a wiper motor and a linkage attached thereto, the coaxial of which drives the crank, which is rigidly connected to the drive shaft of each wiper, generally through the crank and the link bar.

The interlock housing is tightened with three bolts to the motor bracket, which is usually supported by a bracket tube. The bolt is tightened to the bolt pedestal of the housing cover in the direction of the drive, thereby supporting the interlock housing to the motor bracket.

The drive shaft of the wiper is installed on the wiper bearing, and the bearing housing is assembled or integrally mounted to the bracket. It is assembled to the vehicle body either directly on the wiper bearing or via assembly holes in the wiper bearing, bracket and / or motor bracket.

DE-GM 74 34 119 has a tubular bracket made of square tubes welded to a plate which serves as a motor bracket. This type of tubular bracket or tube rim installation is very stable even in light construction. For cost reasons, use straight holder tubes that do not require a bending process.

Also in EP 04 09 944 B1 a tubular bracket is known which connects tubular components via joints whose motor bracket conforms to the shape. In one variant, the motor bracket is integrated with the housing cover of the interlock housing.

The tubular bracket of EP 0 781 691 A1 has a motor bracket and a bracket tube. The motor bracket has a recess in which the bracket tube is inserted and connected up and down by protrusion welding on a surface facing the bracket tube. The cross-sectional shape of the recess coincides with the cross-sectional shape of the bracket tube and surrounds the bracket tube in the region of about 180 °. Thus, the motor bracket is connected to the bracket tube through several points on only one side of the bracket tube, so that the force appearing during the cleaning operation is not ideally distributed to the two parts, thus creating a locally high load.

The tubular bracket of EP 0 689 975 A1 has a motor bracket. It consists of two symmetrical parts with one recess in the bracket tube direction, and the bracket tube is inserted into the recess. The recesses surround the bracket tube with an area of about 180 ° each so that both recesses surround the bracket tube as a whole. In assembly, the two parts of the motor bracket are installed around the bracket tube and are interconnected, for example mechanically or with an adhesive or by thermal bonding. At this time, the bracket tube is fixed to the motor bracket so as to conform to the material by a connection and / or an adhesive matching the shape in the circumferential direction and the axial direction. Two parts of the motor bracket can be made into one part depending on the shape.

The present invention relates to a tubular bracket according to the higher concept of claim 1.

1 is a schematic diagram of a motor bracket fixed to a bracket tube.

FIG. 2 is an enlarged view of a section along the line II-II of FIG. 1. FIG.

3 is an enlarged view of a section along the line III-III of FIG. 1;

4 shows a variant of FIG. 3 with a polygonal bracket tube;

According to the invention, the corners of the motor bracket are separated into tabs in the transverse direction in the recess area, which tabs alternately wrap one side of the bracket tube and the face opposite it to a part of the outer diameter. Thus, the force appearing during the cleaning operation is distributed to the large circumferential region of the bracket tube and the pure bending stress is partially converted into tensile and compressive stresses. In spite of this good load transfer, the motor bracket has a simple structure and consists of a single part without the latter overlapping or double wall area, and thus can be manufactured by pressure casting or injection using not only hard metal but also synthetic resin.

The individual tabs are relatively thin compared to the overall connection area. The tab can thus be connected with the bracket tube in the desired shape to conform to the shape by adhesive or welding. In this case, when welding the motor bracket and the bracket tube using the laser beam, this welding method is very useful because the thin material can be interconnected without changing the structure of the material. Thin parts are light in weight. These parts can be used in the connection method according to the present invention because of excellent power transmission.

In order to increase the strength, it is necessary to make the conformal connection assist the material-compatible connection, for example, to configure the concave portion of the bracket tube and the corresponding motor bracket to have a cross section rather than a circular cross section. Further, there is an elongated groove formed by rounding the longitudinal end portion between the tabs in order to increase the strength. As a result, the stress concentrated in the grooves can be reduced, and stress cracking and fatigue cracking can be prevented from occurring in this region.

Another advantage is shown in the drawings. The figure is an embodiment of the invention. The various features are combined and described in the drawings, examples and claims.

Those skilled in the art can use the features individually and in any meaningful combination in accordance with the purpose.

The tubular bracket 10 has a bracket tube 12 and a motor bracket 14. In the motor bracket, there is an opening 16 for assembling a motor, which is not shown in the figure with the interlock. The motor is assembled to the motor bracket 14 with bolts. There is a bolt hole 18 for this assembly. The motor bracket 14 is an assembly having a reinforcement part 22 at the corner and one thin groove 24 in the opening 16 and the bolt hole 18 area. The motor bracket 14 is supported by the vehicle body not shown in the drawing through the bend 58 (Fig. 2). The fixing bolt is inserted into the groove hole of the motor bracket 14.

On the face 26 of the bracket tube 12 side, the motor bracket has a recess 20 in which the bracket tube 12 is inserted and supported. The cross-sectional shape of the recess 20 coincides with the outer cross section of the bracket tube 12.

From the edge of the motor bracket 14 of the face 26, the motor bracket 14 is separated by tabs 28, 30, 32 in the transverse direction in the recess 20 area. There is an elongated groove 34 between the tabs 28, 30 and an elongated groove 36 between the tabs 30, 32. The long grooves 34 and 36 have rounded ends thereof in the longitudinal ends 38 to 40 that reach the body through the recesses 20. This measure reduces the concentration of stress in this region.

The recessed portion 20 of the tab 30 is symmetrical with the recessed portion 20 provided in the tabs 28 and 32, so that one side of the bracket tube 12 is formed by the tabs 28 and 32. The face is surrounded by tab 30. As a result, power applied to the entire outer diameter of the bracket tube 12 is transmitted to the bracket tube 12. This tube is particularly thin in order to have a good dynamic fit.

The tabs 28, 30, 32 are connected to the bracket tube 12 in the regions 50, 52 by a suitable connection method for the material. In the form according to the invention, the axial extension of the tabs 28, 30, 32 is relatively short compared to the total extension of the assembly area and the tabs 28, 30, 32 extend only to a part of the outer diameter. Therefore, the bonding between the tabs 28, 30, 32 and the bracket tube 12 can be easily performed from the side, it can be easily manufactured by the adhesive connection as well as the welding connection and easy to adjust.

The difference between the motor bracket 44 of FIG. 4 and the motor bracket 14 of FIGS. 1 to 3 is that the bracket tube 42 and the tabs 46 and 48 have an octagonal polygonal cross-sectional shape. Thus, the motor bracket 44 is connected to match the shape of the bracket tube 42. This connection is supported in the areas 54 and 56 by means of connection suitable for the material.

Claims (6)

In the tubular bracket 10 in which the motor brackets 14 and 44 are provided with the recesses 20 into which the bracket tubes 12 and 42 are inserted and supported along one side 26, The corners of the motor brackets 14, 44 are divided into tabs 28, 30, 32, 46, 48 in the transverse direction in the recesses 20 and the folds, The tab is a tubular bracket, characterized in that it wraps one side of the bracket tube (12, 42) and the other side of the opposite side alternately with respect to a portion of the outer diameter. 2. A tubular bracket according to claim 1, wherein the bracket tube (12) has a circular cross section and about half of the circular cross section is wrapped by tabs (28, 30, 32). 3. Tubular bracket according to claim 1 or 2, characterized in that the tab (28, 30, 32, 46, 48) is connected with the bracket tube (12, 42) by means of a connection suitable for the material. 4. The tubular bracket according to claim 1, wherein the motor brackets 14, 44 and the bracket tubes 12, 42 are made of light metal, in particular welded to each other with a laser beam. . 5. The bracket tube according to claim 1, 3 or 4, wherein the bracket tube 42 is not circular, in particular has a polygonal cross section and is connected to the motor bracket 44 to conform to the shape. 6. A tubular bracket characterized by. 6. A device according to any one of the preceding claims, characterized in that there is an elongated groove between the tabs (28, 30, 32), wherein the longitudinal ends (38, 40) of the elongated groove are rounded. Tubular brackets.