JPH07197939A - Sliding bearing - Google Patents

Abstract

PURPOSE:To prevent generation of crack or peel-off by abutting an abutting surface of a half sliding bearing having a back plate and a lining member to the opposite abutting surface, and projecting a radial outer portion of the abutting surface in a circumferential direction compared to an inner portion. CONSTITUTION:A half sliding bearing 1 is provided with a back plate 2 and a lining 3, and formed to be a half cylinder. Both ends of the bearing 1 are projected from divided surfaces A in a circumferential direction each by a specified crush height (h). An abutting surface 4 is so cut inclinedly that its radial outer portion is projected circumferentially compared to an inner portion. In assembling the bearing 1 onto a housing, the amount (h) of crush height is contracted and the contraction stress is applied to the abutting surface 4. The abutting surface 4, being cut inclinedly, receives stress at its radial outer portion larger than that at its inner portion. The stress at the radial outer portion is received by the back plate 2 having strength. It is thus possible to prevent generation of crack or peel-off on a lining member 3 or a boundary surface between the lining member 3 and the back plate 2, which may be caused by fatigue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide bearing device,
More specifically, the present invention relates to a slide bearing device in which the abutting surfaces of the half slide bearings are butted against each other.

[0002]

2. Description of the Related Art Conventionally, a slide bearing device in which two butting surfaces of two half bearings each having a backing metal and a lining material are butted against each other is already known. The total circumferential length of the above two half-split bearings is set longer than the length of the inner peripheral surface of the housing, and the difference is the crash height. When assembling the two half slide bearings into the housing, the above-mentioned crash height portion is circumferentially compressed and deformed by the circumferential compression force of the half slide bearing, and each half slide bearing is compressed by the compression force. The outer peripheral surface of is closely attached to the inner peripheral surface of the housing.

[0003]

By the way, the conventional abutting surfaces are designed so that both the outer side and the inner side in the radial direction project in the circumferential direction by the same amount. That is, the conventional abutment surface is formed so as to be parallel to the split surface of the housing, and as a result, when two half-sliding slide bearings are assembled to the housing, the stress applied to the abutment surface is the entire area. It was virtually the same. On the other hand, in a half plain bearing having a back metal and a lining material, the lining material usually has a lower strength than the back metal. When a relatively high stress is applied, there is a risk of cracking or peeling due to fatigue at the lining material itself or at the interface between the lining material and the back metal. In view of such circumstances, the present invention provides a plain bearing device capable of preventing the crack and the peeling from occurring even if the crash height is increased.

[0004]

That is, according to the present invention, in a sliding bearing device in which the abutting surfaces of a half-sliding bearing having a back metal and a lining material are butted against each other, the outer side in the radial direction of the butted surface is inward from the inside. Is also projected in the circumferential direction.

[0005]

According to the above construction, when the two half slide bearings are assembled to the housing, the stress applied to the abutting surface is greater in the radial direction outside than in the inside. Therefore, it is possible to prevent the stress of the lining material from excessively increasing by receiving most of the stress with the backing material having high strength, and thus cracks and peeling due to fatigue may occur at the lining material itself or at the interface between the lining material and the backing material. Can be prevented.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, a half slide bearing 1 comprises a back metal 2 made of steel on the outer peripheral surface side, and a lining material 3 made of a bearing alloy on the inner peripheral surface side. And is formed in a half-cylindrical shape as a whole. Both ends of the half slide bearing 1 are
Each of them is protruded in the circumferential direction by a predetermined crash height h from the divided surface A of the housing, and the abutting surface 4 is slanted so that its outer side in the radial direction protrudes in the circumferential direction rather than its inner side. It has been cut off. At this time, the inclination angle θ is preferably in the range of 0.19 to 1.34 degrees, and more preferably in the range of 0.19 to 0.95 degrees. When the half slide bearing 1 having the above structure is assembled to the housing, the crush height h is compressed and the half slide bearing 1 is circumferentially compressed, whereby the abutment surface 4 is formed. Compressive stress is applied to the. However, since the abutting surface 4 is obliquely cut so that the outer side in the radial direction protrudes in the circumferential direction rather than the inner side as described above, the stress on the outer side in the radial direction of the butting surface 4 is inward. It becomes larger than the stress of the part. As a result, the stress outward in the radial direction is received by the backing metal 2 having high strength, and it is prevented that excessive stress is applied to the lining material 3 having low strength, and the lining material 3 itself or the lining material 3 and the backing metal 3 are prevented. It is possible to prevent cracks and peeling due to fatigue from occurring at the interface with 2. Next, FIG. 2 shows another embodiment of the present invention.
The butt surface 4 is formed parallel to the split surface A of the housing (not shown), and the lining material 3 is cut diagonally from the butt surface 4 of the backing metal 2 so that the butt surface 4 as a whole is radially outward. Are projected in the circumferential direction rather than inward. It is clear that even with such a configuration, the same operational effects as those of the above-described embodiment can be obtained.

[0007]

As described above, according to the present invention, since the stress of the lining material can be prevented from increasing, cracks or peeling due to fatigue may occur at the lining material itself or at the interface between the lining material and the back metal. The effect that it can prevent being produced is acquired.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing another embodiment of the present invention.

[Explanation of symbols]

1 ... Half plain bearing 2 ... Back metal
3 ... Lining material 4 ... Butt face

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoichiro Kita 3-65 Midorigaoka, Toyota-shi, Aichi Otoyo Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A slide bearing device in which abutting surfaces of a half-sliding bearing having a back metal and a lining material are butted against each other, wherein the outer side of the abutting surface protrudes in the circumferential direction more than the inner side. Sliding bearing device characterized by