JPH0331001A - Bearing device for wheel of bicycle - Google Patents

Abstract

PURPOSE: To facilitate the manufacture by providing a boss comprising two parts having an integrated rolling contact surface, piercing a connection projection of a first part in a hole of a second part, and plastically deforming a free end of the projection to be engaged with a small diameter part of the hole of the second part. CONSTITUTION: A bearing device, when applied to a wheel to be driven, comprises an outer race 1, two angular contact ball rows 2, a first part 3 integrated with a rolling contact surface 3', a second part 4 integrated with a rolling contact surface 4', and a fitting flange 5. A connection projection 6 is provided on the first part 3, and the projection 6 is pierced in a range of a hole surface of the second part 4. A raised part 7 formed through the plastic deformation after the assembly of the parts 3, 4 is provided on the free end of the connection projection 6, and the parts 3, 4 are firmly connected to each other by engaging the raised part 7 with a small diameter part 4" of the hole in the second part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides the following:
This invention relates to a bearing device for automobile wheels.

[Conventional technology]

A bearing device of the type described above is disclosed in European Patent Application No. 59339
It can be seen from the specification. Here, a bearing arrangement is obtained which can be easily assembled, but for the axial fixation additional parts are required, which are disadvantageously designed in terms of space and weight. That is, the mounting nut provided requires a longer projection with a threaded portion.

[Problem to be solved by the invention]

The object of the invention is to specify a bearing arrangement capable of being subjected to high loads, which does not have the above-mentioned disadvantages and which achieves advantageous configurations in terms of space and weight and in terms of manufacturing in the simplest possible manner.

[Means to solve the problem]

This problem is solved in that the connecting projection has, on its free end, a subsequently integrally formed elevation, which faces the small diameter of the hole in the second part in the area of the mounting flange. . Special features are described in claims 2 to 6.

According to the invention, instead of the threaded nut, only one protuberance is produced on the coupling projection by plastic deformation. This bulge contacts the small diameter of the hole in the second part in the area of the attachment flange and thus prevents detachment of the image part.

This results in a short connecting projection which is therefore also advantageous in terms of weight. In creating the ridge, pressure is applied to the second part with the rolling surface, but since the installation takes place in the area where the flange is present, there is a very stable part here. . As a result, the deforming forces consumed do not have a detrimental effect on the previously very accurately ground rolling surfaces of the associated rolling element group. Therefore,
An easily handleable and installable structural unit is obtained which can be subjected to high loads. This is because, due to its compact shape, all parts can be manufactured easily, and since the inner ring consists of two parts, all parts can be equipped with an optimal number of rolling elements before assembly, which makes it possible to load This is because the burden capacity is very advantageous even within this range. A very compact and light structural unit is thus obtained on the non-moving wheels. In this case, despite the compactness, a long seating surface is obtained between the first part and the second part in the area of the coupling projection, which is advantageous with respect to loads.

In this basic structure, if, according to a preferred embodiment, an extension with an axial groove on the curved surface is attached on the side opposite the ridge, a configuration for driven wheels is also obtained with simple means. This extension also has a small outer circumferential surface, on which the inner part of the bell joint is arranged. This provides an advantageous possibility of separating the bearing and coupling parts. This is often desirable since both parts are manufactured in different factories and assembled for the first time at the vehicle manufacturer.

In order to ensure that on the driven wheels the torque to be transmitted is further transmitted to these wheels, it is preferred that the second part has recesses or teeth in the area of the bore diameter. Into these recesses or teeth the ridges are at least partially pressed during manufacture of the ridges. This creates a fit and frictional connection.

Another possibility of reducing weight consists in providing a cutout in the end face of the inner part. This results in a profile which is advantageous in terms of forging technology and is stress-optimized, which profile can be subjected to high loads despite the weight reduction.

〔Example〕

The invention will be explained in detail with the help of three figures.

According to FIG. 1, the bearing device for the undriven wheel is the outer wheel 1.
, two angular contact type ball rows 2, and a rolling surface 3
The mounting consists of a ml part 3 with an integrated rolling surface 4', a second part 4 with an integrated rolling surface 4', and a mounting flange 5. 1st
The part 3 has a connecting projection 6 which passes through the second part 4 in the area of its bore surface. At the free end of the coupling projection 6 there is a ridge 7 which engages the bore diameter 4'' of the second part 4 and thus creates a simple compact axial connection with the first part 3. The bulge 7 is created by plastic deformation after assembly of the parts 3 and 4. In this case a force is applied to the part 4. However, in this case no unacceptable deformation occurs.

This is because the bulge 7 is located in the area of the flange 5, where the attachment part 4 has great dimensional stability.

Furthermore, it is advantageous with respect to stability that parts 3 and 4 have long seating surfaces 8 in the region of the coupling projections. Simple manufacture as a forging is facilitated by the fact that the first part 3 has a cutout 9 on the end face.

In a bearing arrangement for a driven wheel, the measures described above can be used with considerable advantage.

Details regarding this can be seen from Figures 2 and 3. FIG. 2 shows a bearing arrangement similar to FIG.

However, here an extension 10 is required in the part 3 for transmitting the torque, which extension has an axial groove 11 on the circumference.
It is equipped with This makes it possible to simply mount the inner part 12 of the bell joint (not shown) in a non-rotatable manner on the bearing arrangement. A modification thereof is shown in FIG. Here, the inner part 12' of the bell joint is attached directly to the extension 10. Manufacturing and assembly are thereby further simplified. A reliable transmission of the torque on the other side is achieved by the provision of teeth 13 in the area of the bore diameter 4'', which are pushed into the part of the bulge 7, so that here too a snug connection is achieved. can.

[Brief explanation of drawings]

FIG. 1 shows the drive t! according to the present invention. 2 is a cross-sectional view of a wheel bearing device that is not driven; FIG. 2 is a screen view of a driven wheel bearing device according to the present invention; and FIG. 3 is a modification of FIG. 2. 4... Second part, 4''... Hole small diameter part, 5... Flange for mounting, 6... Connecting projection, 7... Raised actuator Figure 2

Claims (1)

[Claims] 1 Consists of an outer ring, two rows of rolling elements, and a boss divided into two parts, each part of which has an integrated rolling surface, and the first part has an integrated rolling surface. , a bearing arrangement for a motor vehicle wheel, which passes through a hole in a second part with a coupling projection, which is provided with a mounting flange, in which the coupling projection (6) has a bulge (7) integrally formed at its free end. Bearing device for a motor vehicle wheel, characterized in that the ridge is opposite the bore diameter (4″) of the second part (4) in the area of the mounting flange (5). in which the first part (6) has, on the axial side opposite the ridge (7), an extension (10) with an axial groove (11) on the circumferential surface or on the bore surface. 3. Bearing arrangement for a wheel according to claim 1, characterized in that: 3. an inner part (12) of the bell joint fits on the extension (10); 4. The first part of the driven wheel has an extension on the axial side opposite to the ridge, into which the inner part (12') of the bell joint is integrated. 5. The wheel bearing device according to claim 1, characterized in that a recess or a tooth (13) is provided in the area of the small diameter portion (4) of the hole. Bearing device for a wheel according to claim 2 or 3. 6. One of claims 1 to 4, characterized in that the first portion (3) is provided with a notch (9) in at least an end face area. The wheel bearing device described in .