JPS61241517A - Sliding bearing device - Google Patents

Abstract

PURPOSE:To eliminate the possibility of installing bearing members at wrong positions by projecting positioning clicks, the axial positions of which are baised to each other on the butt end portions of one bearing member and the other bearing member. CONSTITUTION:An upper bearing 2 is formed to be semicylindrical, and the peripheral end portion is provided with a positioning click 8 for installation in a casing 1 located at a position biased from an oil groove 5 in the axial direction. A lower bearing 3 is formed to be semicylindrical similarly to the upper bearing 2, and a positioning clock 9 is projected at an axially biased position opposite to the clock 8 of the upper bearing 2. Thus, the bearings can be installed only when the bearings 2, 3 are fitted at the respective correct positions of the upper and lower casings 1a, 1b, so that the bearings can not be installed at wrong positions.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a sliding bearing device comprising a pair of half-split sliding bearing members, and in particular, one sliding bearing member and the other sliding bearing member have different shapes or shapes. The present invention relates to an improvement of a bearing device including sliding bearing members of different types made of different materials.

[Prior Art] In general, in a pair of half-split plain bearings, there are no side holes or oil grooves provided along the inner circumferential surface between one bearing member and the other bearing member, and the presence or absence of oil grooves in the bearing Alternatively, the bearing members may be composed of different types of bearing members, such as when the bearing members have a different shape due to a difference in bearing thickness, or furthermore, when they are comprised of members of different materials.

Therefore, if we take an oil groove provided on the inner peripheral surface of a bearing member to reduce the sliding resistance with the shaft as an example of the above-mentioned shape difference, if oil grooves are provided on both of a pair of sliding bearing members, In some cases, the minimum oil film thickness becomes thinner, and especially when an oil groove is provided in the plain bearing member on the side that receives more load, the oil film thickness decreases as the surface pressure increases, and the shaft and plain bearing This causes problems such as wear or seizure of the plain bearing.For this reason, in the past, oil grooves were only provided on the plain bearing member on the side that received less load, and oil grooves were provided only on the side that received more load. The bearing member has no oil groove, and the oil film thickness is increased to increase the load capacity. That is, the shapes of one bearing member and the other bearing member are different in this way.

[Problems to be Solved by the Invention] However, when using a pair of bearing members having such a configuration and consisting of different types of bearing members, for example, the bearing member on the side receiving the load that does not have the oil groove Normally, a bearing member with an oil groove on the lower side, which is less loaded, is assembled in stages to perform the intended lubricating bearing function, but at first glance, these two bearing members are As far as I can tell, it is often difficult to distinguish from the outside, so when assembling, there is a risk of being inadvertently installed in the wrong vertical position, and if you accidentally install the sliding bearing member upside down. In some cases, the shapes or materials of the upper and lower bearing surfaces are different, causing problems such as seizure.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and the present invention has been made in order to eliminate the above-mentioned drawbacks, and the present invention has been made in such a way that the positions of the positioning claws of one bearing member and the other bearing member, which are made of different types of bearing members, are made different in the axial direction. It is an object of the present invention to provide a sliding bearing device that prevents mistakes in the assembly positions of both bearing members.

[Means for Solving the Problems J] The sliding bearing device according to the present invention comprises a pair of half-split sliding bearing members, and one sliding bearing member and the other sliding bearing member are different types of sliding bearing members having different shapes, materials, etc. In this sliding bearing device, positioning pawls are provided on the abutting ends of the one bearing member and the other bearing member, respectively, with their axial positions offset from each other.

[Function] In the present invention, since the protruding positions of the positioning claws of one bearing member and the other bearing member are different in the axial direction, unless each bearing member is placed in the correct position, Since it cannot be assembled, there is no risk of incorrect assembly position.

[Example] The present invention will be described below based on an illustrated example in which the upper and lower shapes are different depending on the presence or absence of an oil groove. In Figure 1,
(1) is the upper casing (1a) and the lower casing (1
(2) is the sliding bearing member placed in the casing (1) on the side that receives less load, in the case shown is the upper bearing, and (3) is the sliding bearing member on the side that receives more load. This is a sliding bearing member, that is, a lower bearing, and a vehicle (4) is supported within both bearings (2) and (3). Note that depending on the load direction, the upper bearing and the lower bearing may be arranged in the opposite direction from that shown in the drawings.

As shown in the figure, the upper bearing (2) is formed in a semi-cylindrical shape, and an oil groove (5) extending over the entire circumferential length is provided at the axial center on the inner circumferential surface of the upper bearing (2). ) is the upper bearing (2
) communicates with an oil groove (7) provided in the upper casing (1a) through a sleeve hole (6) that penetrates the inside and outside of the upper casing (1a). Therefore, the lubricating oil is supplied from the oil groove (7) through the sleeve hole (6) to the oil groove (5) of the upper bearing (2), and is further supplied to the sliding surface to lubricate the sliding surface. It has become. or,
At the circumferential end of the upper bearing (2), a pawl (8) for positioning is provided at a position axially offset from the oil groove (5) for assembly within the casing (1).

On the other hand, the lower bearing (3) is formed in the same semi-cylindrical shape as the upper bearing (2), and as shown in FIG. A positioning pawl (9) is provided in a protruding manner at a position opposite to (8) in the axial direction. However, these claws (8) and (θ) are formed by pressing from the inner surface, so the claws (8) and (θ) are formed on the inner surface.
8), (9) and the same shape as the protruding shape m(to
), (xl) are formed.

As described above, since the positioning claws (8) and (9) of the upper bearing (2) and lower bearing (3) are protruded with their axial positions offset from each other, the upper and lower casings Since it cannot be assembled unless the parts (la) and (lb) are fitted into the correct positions, there is no risk of incorrect assembly positions.

In addition, as shown by the dotted line in Fig. 2, the lower bearing (shown by the solid line)
3), the position of the pawl (8) of the upper bearing (2) may be aligned with the oil groove (5) in the axial direction; in this case, a recess is formed on the bearing surface of the upper bearing (2). Part (10)
Since no oil is formed, the oil film can be maintained better.

In addition, on the contrary, the pawl (9) of the lower bearing (3) is connected to the upper bearing (2) shown by the solid line, as shown by the dotted line in Figure 2.
The oil groove (5) of the upper bearing (2) may be connected to the oil groove (5) in the axial direction. In this case, the concave portion (11) on the inner surface of the pawl (8) forms a smooth oil introduction surface that is continuous with the oil groove (5).
) can be prevented from occurring on the mating surfaces.

The above-mentioned embodiments have been described for cases where there are differences in shape due to the presence or absence of oil grooves, but for example, differences due to the presence or absence of sleeve holes,
It is clear that assembly errors can be prevented by having the above-mentioned configuration in which the claw positions are different even when the bearings are different in thickness, thickness, etc., or even when the materials are different.

[Effects of the Invention] As described above, according to the present invention, there is an effect that the assembly of both bearing members does not occur in the wrong position.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
The side view shown along the line ■-■ in the figure, Figure 3 is the ■■ in Figure 2.
It is a cross-sectional view taken along the -■ line. (2)...Sliding bearing member with oil groove, (3)...
・Sliding bearing member without oil groove, (5)...oil groove,
(8), (9)...positioning claw, (10)'
, (11)... recessed part. Patent applicant Taiho Kogyo Co., Ltd. Agent Patent attorney Sou Yamazaki Akibi Gco

Claims (1)

[Claims] In a slide bearing device comprising a pair of half-split slide bearing members, one and the other of which are different types of slide bearing members having different shapes and materials, the one bearing member and the other bearing member are different from each other. A sliding bearing device characterized in that positioning pawls are provided protruding from the abutting ends of the butt ends thereof, the positions of which are offset from each other in the axial direction.