JPH053630U - bearing - Google Patents

Abstract

(57) [Abstract] [Purpose] The conventional small-sized plain bearing has many problems such as useless leakage of grease and the like, and the bearing is easily deformed. To aim. [Structure] Side wall 17 protruding outward at one end of inner peripheral wall 16
And a female bearing member 10 in which one end of the outer peripheral wall 12 is provided with a side wall 13 projecting inwardly.
The male bearing member 11 was fitted and fixed to the female bearing member 10 to form the grease reservoir 20 inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is a sliding bearing type bearing in which the shaft inserted in the bearing is lubricated with grease or the like. Regarding

[0002]

[Prior art]

  U.S. patent registration number for small plain bearings with grease lubrication There is a technique described in Japanese Patent No. 3,503,660.   According to this technique, FIG. 6 is a perspective view, FIG. 7 is a longitudinal sectional view in the axial direction, and FIG. As shown in FIG. 8 which is a vertical cross-sectional view in a direction perpendicular to the The insertion hole 2 is provided, and the bearing is provided around the outside of the bearing surface 3 which is the inner surface of the shaft insertion hole 2. Four space portions 4 are provided along the surface 3.

[0003]   Each space 4 is open to one side of the bearing body 1 and the other side of the bearing body 1 is covered by a wall 5. And a long hole 6 penetrating the bearing surface 3 from each space 4 is provided. A cylindrical flange 8 is provided on one side, and the shaft insertion hole 9 is formed on the inner surface of the flange 8. The annular lid 7 having the above is fitted, and the openings of the respective space portions 4 are covered by the annular lid 7.   The long hole 6 needs to be opened at the end of the space 4 for convenience of demolding after molding. It is formed in a slit shape that is long in the axial direction of the space 4.

[0004]   Each space 4 is filled with grease or a fibrous material impregnated with lubricating oil or felt. A bearing is provided that automatically lubricates the rotating shaft inserted into the shaft insertion holes 2 and 9. It

[0005]

[Problems to be solved by the device]

  Grease or lubricating oil that has flowed out from each space 4 through the slot 6 into the shaft insertion hole 2 Although it penetrates between the rotary shaft and the shaft insertion hole 2 to form an oil film, the long hole 6 forms the space 4 Since it is provided over the entire axial length of the long hole 6, it passes through both ends of the long hole 6. The grease or lubricating oil is supplied to the end of the bearing and is mostly used to lubricate the rotating shaft. There was a problem of leakage from the end of the bearing.

[0006]   In addition, the bearing body 1 is deformed by the long hole 6 extending over the entire axial length of the space 4. It has a shape that is easy to move, and faces the bearing surface 3 in the direction of rotation as the rotation speed of the rotating shaft increases. If a local load is applied to the deformed bearing surface 3 due to strain, the original lubrication function will be reduced. There was a risk of falling.   Further, the annular lid 7 fitted on the inner surface of the flange 8 is easily detached from the bearing body 1 and the like. was there.

[0007]   To solve this problem, there is little useless leakage, the bearing is difficult to deform, and the parts are A small slide bearing of a type that is hard to come off is required.   The present invention is intended to solve such problems, and to reduce wasteful leakage and We provide a small spherical bearing type sliding bearing that does not easily deform and parts do not come off easily. Is.

[0008]

[Means for Solving the Problems]

  In order to achieve the above-mentioned object, the present invention is directed to an end of an inner peripheral wall of an annular projecting outward. One of a male bearing member having a side wall and a grease outlet hole provided on the inner peripheral wall and an outer peripheral wall. And a female bearing member having an annular side wall projecting inward at the end thereof The inner peripheral wall of the male bearing member to the inner peripheral edge of the side wall of the female bearing member, The side wall of the material is fitted and fixed to the inner peripheral surface of the outer peripheral wall of the female bearing member, respectively. A grease reservoir was formed in the area.   When the outer peripheral surface of the outer peripheral wall of the female bearing member is used as a spherical surface for a spherical bearing, it can.   Alternatively, the shape of the above male bearing member is projected outward at one end of the inner peripheral wall. An annular side wall is provided, and a cylindrical small-diameter outer peripheral wall extending from the outer peripheral edge of the side wall to the other side is provided. The outer diameter of the male bearing member is smaller than that of the female bearing member. Fits and adheres to the peripheral surface.

[0009]

[Action]

  The bearing member configured as described above is obtained by fitting the male bearing member to the female bearing member. When the fitting part is fixed, it is integrally assembled and a grease reservoir is formed inside. A grease outflow hole penetrating from the reservoir to the inner peripheral surface is formed.   Insert a member impregnated with grease or lubricating oil into the grease reservoir and When the rotary shaft is inserted into the peripheral surface, it rotates from the sealed grease reservoir through the grease outlet hole. Grease or lubricating oil is supplied to the rolling shaft.

[0010]   Since the inner peripheral wall is only provided with grease outflow holes, like conventional bearing members, There is no problem that the bearing member is easily deformed by the long hole that is long in the axial direction. .   Also, since the male bearing member and the female bearing member are fitted and the fitted portions are fixed, There is no risk that the male member will separate from the female bearing member.

[0011]

【Example】

  An embodiment of the present invention will be described with reference to the drawings and shown in the longitudinal sectional view of FIG. As described above, the bearing has a female bearing member 10 and a male bearing member 1 made of a synthetic resin material or a metal material. 1, the female bearing member 10 has one end (see FIG. 1) of a cylindrical outer peripheral wall 12. And an annular side wall 13 projecting inward is provided at the left end of the outer peripheral wall 12. An annular groove 14 is provided around the peripheral surface, and is radially arranged inside the female bearing member 10. A plurality of reinforcing ribs 15 are provided (see FIG. 2).

[0012]   The male bearing member 11 is attached to one end (right end in FIG. 1) of the cylindrical inner peripheral wall 16 so as to extend outward. A protruding annular side wall 17 is provided around, and an annular protrusion 18 is provided on the outer peripheral edge of the side wall 17. Therefore, the grease outlet hole 19 is provided in the inner peripheral wall 16.   In FIG. 1, although the position of the grease outlet hole 19 is substantially in the center of the inner peripheral wall 16, the bearing When it is long in the axial direction, the grease outlet holes 19 are provided at a plurality of positions in the axial direction of the inner peripheral wall 16. You can turn it off.

[0013]   The inner peripheral wall 16 of the male bearing member 11 is fitted to the inner peripheral edge of the side wall 13 of the female bearing member 10. In addition, the outer peripheral edge of the side wall 17 of the male bearing member 11 is attached to the outer peripheral wall of the female bearing member 10. 12 and the annular projection 18 is fitted into the annular groove 14 to be assembled integrally. A grease reservoir 20 is formed on the surface.   Further, in order to make the bearing inseparable, the annular protrusion 18 and the annular groove 14 are further sonicated. By welding, the fitting portion between the inner peripheral wall 16 and the side wall 13 is ultrasonically welded.

[0014]   The reinforcing ribs 15 of the female bearing member 10 are provided to increase the rigidity of the bearing. Therefore, the bearing is relatively small, and the female bearing member 10 and the male bearing member 11 are If the wall pressure dimension is large, the reinforcing rib 15 can be omitted.

[0015]   Before assembling the male bearing member 11 to the female bearing member 10, the inside of the grease reservoir 20 Fill the grease with a member impregnated with grease or lubricating oil. It is supplied to the surface of the rotating shaft S inserted in the bearing via the outflow groove 23. ing.   The grease or the lubricating oil is not supplied to the surface of the rotating shaft S and is transmitted outward from the end of the bearing. There is no useless grease or lubricating oil that would otherwise be leaked to.

[0016]   The bearing does not have the problem of being easily deformed by the grease outlet hole 19.   Also, the male bearing member 11 and the female bearing member 10 are fitted and fixed together. Therefore, there is no risk of the bearing disassembling when using it.

[0017]   FIG. 3 is a vertical sectional view showing an embodiment in which the bearing of the present invention is used for a spherical bearing, The outer peripheral wall 21 whose outer peripheral surface is formed into a convex spherical shape is a bearing case (not shown). It is inserted into the concave spherical shape formed on the inner peripheral surface of the.

[0018]   4 and 5 show a second embodiment of the present invention, in which the outer peripheral wall 12 of the female bearing member 10 is A large-diameter inner peripheral surface 22 is formed on the inner peripheral surface, and one end portion of the inner peripheral wall 16 of the male bearing member 11 is formed. A cylindrical small-diameter outer peripheral wall 23 extending to the other is provided on the outer peripheral edge of the side wall 17 provided around An annular projection 18 is provided on the outer peripheral surface of the small-diameter outer peripheral wall 23, and an annular concave groove 1 is formed on the large-diameter inner peripheral surface 22. 4 is formed, and the outer peripheral wall 16 is fitted to the side wall 13 as in the first embodiment, and the outer peripheral wall having a small diameter is formed. The annular projection 18 of 23 is fitted into the annular groove 14 of the large-diameter inner peripheral surface 22, and the fitting portion is It is fixed by means such as welding.

[0019]   The vertical cross-sectional view of FIG. 4 shows the case where the reinforcing rib 15 is provided on the female bearing member 10. The vertical sectional view of 5 shows the case where the reinforcing rib 15 is provided on the male bearing member 11, Also in these bearings, the male bearing member 11 is fitted to the female bearing member 10 as in the first embodiment. And is fixed and the grease reservoir 20 is formed inside, and the grease is attached to the male bearing member 11. Outflow holes 19 are provided.   The operation of the bearing of the second embodiment is similar to that of the above-mentioned first embodiment.

[0020]

[Effect of device]

  Since the present invention is configured as described above, it has the effects described below. To do.   With the bearing member configured as described above, the grease inside the grease reservoir or the lubricating oil It is supplied to the surface of the rotating shaft through the grease outlet hole, but directly outward from the end of the bearing member. There is no leakage, and no wasteful consumption of grease or lubricating oil occurs.

[0021]   The male bearing member is fitted and fixed to the female bearing member, so it decomposes during use. There is no fear.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a bearing showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a vertical sectional view of a bearing used for a spherical bearing.

FIG. 4 is a vertical sectional view of a bearing showing an example of a second embodiment.

FIG. 5 is a vertical cross-sectional view of a bearing showing another example of the second embodiment.

FIG. 6 is a perspective view of a conventional bearing.

7 is a vertical cross-sectional view of the bearing shown in FIG. 6 in the axial direction.

8 is a vertical cross-sectional view in a direction perpendicular to the shaft center of the bearing shown in FIG.

[Explanation of symbols]

10 Female bearing member 11 Male bearing member 12 Outer wall 13 Side wall 14 annular groove 15 Reinforcing rib 16 Inner wall 17 Side wall 18 annular protrusion 19 Grease outflow hole 20 grease reservoir 21 Outer wall 22 Large diameter inner peripheral surface 23 Small diameter outer wall

Claims (3)

[Scope of utility model registration request] 1. A male bearing member in which an annular side wall projecting outward is circumferentially provided at one end of an inner peripheral wall, and a grease outlet hole is provided in the inner peripheral wall; and an annular projecting inward at one end of an outer peripheral wall. Of the female bearing member having a side wall provided around the inner peripheral wall of the female bearing member, and the inner peripheral wall of the male bearing member to the inner peripheral edge of the side wall of the female bearing member.
A bearing characterized in that a side wall of the male bearing member is fitted and fixed to an inner peripheral surface of an outer peripheral wall of the female bearing member to form a grease reservoir therein. 2. The bearing according to claim 1, wherein the outer peripheral wall of the female bearing member has a spherical outer peripheral surface shape. 3. An annular side wall projecting outward is provided around one end of the inner peripheral wall, and a cylindrical small-diameter outer peripheral wall extending from the outer peripheral edge of the side wall to the other is provided, and the grease flows out to the inner peripheral wall. The male bearing member is provided with a hole, and the female bearing member is formed by surrounding an inwardly projecting annular side wall at one end of the outer peripheral wall. The inner peripheral wall of the male bearing member is the female bearing member. A small-diameter outer peripheral wall of the male bearing member is fitted and fixed to the inner peripheral surface of the outer peripheral wall of the female bearing member at the inner peripheral edge of the side wall of the bearing to form a grease reservoir therein. .