JPH02195018A - Half bearing with flange - Google Patents

Abstract

PURPOSE:To improve assembling operability in a half bearing with flange wherein a flange part and a barrel part is integrally formed, by forming a slit on a border between the part and the barrel part from both ends of the bearing, and thereby improving conformability even with insufficient accuracy in measure. CONSTITUTION:A half sliding bearing with a flange is composed of thrust parts 1a, 1b and a radial part 2, and a slit 4 is formed on a border between the thrust parts 1a, 1b of both sides of the bearing and the radial part 2. The part on which the slit 4 is formed is free from restriction of the thrust parts 1a, 1b and the radial part 2. Partial abutment caused by insufficient accuracy of correspondent housing, crank shaft and a bearing is reduced, and the assembling operability is not deteriorated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a half-split bearing with a flange, and more specifically, even if the machined shape and degree of processing at the time of manufacture deviate from a predetermined accuracy, the bearing thrust surface The present invention relates to a half-split bearing with a flange, which does not cause uneven contact and has similar assembly workability to a half-split sliding bearing with a flange in which the flange and body are integrally constructed.

Conventional technology Traditionally, flanged half-split plain bearings have been widely used in various fields such as automobiles.

As a half-split belly bearing with a flange, there is, for example, one having a structure as shown in FIGS. 3(al) and (b).

Figure 3(a) shows the flange half-split plain bearing seen from above.
Figure (b) is a perspective view of a half-split plain bearing with a flange seen from the back. However, such a flanged half-split plain bearing has a thrust part 1.
and the radial part 2 are manufactured as an integral structure, and the machining shape and machining accuracy at the time of production are related to the quality of contact between the thrust part of the crankshaft and the thrust part of the bearing. Even a slight defect in the precision of the machining dimensions of the bearing itself can cause a strong one-sided contact on the thrust surface 3 of the bearing, resulting in seizure, or damage to the metal due to repeated load distortion at the boundary between the flange and body. There was a problem with fatigue cracks.

There was a problem.

For this reason, for example, as shown in FIG. 4, there is a type of bearing in which the thrust part 1 and the radial part 2 are manufactured separately and then assembled together.

This is because even if the thrust part 1 and the radial part 2 have some degree of precision inaccuracy, the assembly can be adjusted from time to time, so it is possible to prevent uneven contact or the like from occurring on the thrust surface 3 of the bearing. but,
From the perspective of assembly workability, the former half-split plain bearing with integral structure is more efficient than the latter, and each has -
There are pros and cons.

Problems to be Solved by the Invention The present invention aims to solve such conventional problems, and specifically, the thrust part and the radial part of a flanged half-sliding bearing are fixed as one piece. The flange half bearing has a notch at the boundary between the thrust part and the radial part to prevent strong partial contact from occurring on the bearing thrust surface even if there is a slight precision defect in the mating housing, crankshaft, or bearing itself. The purpose is to make suggestions.

Means for Solving the Problems and Their Effects In other words, the present invention provides a half-split bearing with a flange in which a flange and a body are integrally formed, in which a flange is formed at the boundary between the flange and the body from both end surfaces of the bearing. It is characterized by having a notch.

Hereinafter, a detailed explanation of the configuration and the operation of the means of the present invention will be as follows.

The inventors of the present invention have studied how to assemble a conventional half-split bearing with a flange while maintaining workability while preventing uneven contact from occurring on the thrust surface of the bearing. We obtained the knowledge that it would be better to add some degree of flexibility by adding

Therefore, as a result of further research, the present invention was established based on this research.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows one embodiment of the bearing according to the present invention, (a
) is a perspective view, (b) is a rear perspective view of (a), (C) is (
2(a) and 2(tb) are longitudinal sectional views of other embodiments of the present invention, and FIG. 3(a) and 3(b) are a perspective view of the conventional example and a perspective view of one side thereof, and FIG. 4 shows the assembly of another conventional example in the previous state. FIG.

Symbols 1a and lb are the flange part (thrust part), 2 is the body part (radial part), 3 is the thrust surface, 4 is the notch, 5 is the oil hole,
6 is a radial surface, 7 is an oil groove, 8 is a 7 flange surface 'Ia reservoir,
Reference numeral 9 indicates an oil reservoir, and 10a and 10b indicate end faces.

The flanged half-split plain bearing shown in Fig. 1 consists of thrust parts 1a, 1b and a radial part 2, and notches are provided at the boundaries between the thrust parts 1a, 1b and the radial part 2 on both sides of the bearing. It consists of

A total of four cuts 4 are provided at the boundaries between the thrust portions 1a, 1b and the radial portion 2 along the respective thrust portions 1a, 1b on both end faces 10a, 10b of the bearing. Also,
The length of the cut 4 is such that it remains unsheared by the rotational force of the shaft.

The notch 4 can be provided by, for example, making a notch in the radial part 2 along the thrust parts 1a, 1b of the bearing from both end faces 10a, 10b of the bearing, leaving an unprocessed part. Make a cut with a length of approximately 173 mm, which is the length of the bearing circumferential surface, in each case.
It is sufficient to leave an uncut portion of about 173 or more near the center. With such a cutting length, even when used as a bearing, the bearing will not come into partial contact, and moreover, the bearing can be used for a long period of time.

The part with this cut eliminates the restriction of the thrust parts 1a, Ib and the radial part 2, which can reduce uneven contact caused by poor precision of the mating housing, crankshaft, and bearing, and also impairs workability during assembly. Never.

In addition, as other embodiments, FIGS. 2(a) and (b)
), insert the notch 4 into the thrust part 1 on one side of the bearing.
An example of this is a structure similar to that of the above embodiment except that only the boundary between a and the radial portion 2 is provided.

The effect in this case is also almost the same as the effect in the above embodiment.

<Effects of the Invention> As explained in detail above, the present invention provides a half-split bearing with a flange in which the flange and the body are integrally formed. It is characterized by having a notch.

Therefore, since a notch is provided at the boundary between the thrust part and the radial part, the thrust part and the radial part are not restrained (this means that even if there is a slight defect in machining dimension accuracy of the mating housing, crankshaft, or bearing, There is no uneven contact on the thrust surface of the running-in bearing, and the workability of assembly is also excellent.

[Brief explanation of the drawing]

FIG. 1 shows one embodiment of the bearing according to the present invention, (a
) is a perspective view, (b) is a rear perspective view of (a), tc+ is (
b) is an A-Alili sectional view, (d) is a front view of (a) seen from above, and Fig. 2 ta) and (b) are longitudinal sectional views of other embodiments of the present invention and seen from above The front view, FIGS. 3(a) and 3(b) are a perspective view of a conventional example and a rear perspective view thereof, and FIG. 4 is a perspective view of another conventional example showing a state before assembly. Code 1a, 1b...Flame part (thrust part) 2.
...Body part (radial part) 3...Thrust surface 4...Depth of cut 5
... Oil hole 6 ... Radial surface 1 ... Oil groove 8 ... Flange surface oil sump 9 ... Oil sump 10a, 10b.・・・
...Edge patent applicant KonuDC Co., Ltd. Agent Patent attorney Yoshi Matsushita Attorney t IWI Fumihiro Shima Figure 2 (,]) Figure 3

Claims (1)

[Scope of Claims] 1) In a half-split bearing with a flange in which a flange and a body are integrally formed, a notch is provided at the boundary between the flange and the body from both end surfaces of the bearing. A half-split bearing with a flange. 2) The half-split bearing with a flange according to claim 1, wherein the notch is provided at a boundary between the flange portion and the body portion on at least one side of the bearing. 3) The flange half bearing according to claim 1 or 2, wherein the cut length is less than about ⅓ of the length of the bearing circumferential surface from both end faces of the bearing.