JPH09310735A - Swing support device for automobile parts - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To reduce the number of parts, facilitate assembly, and suppress increase in bolt diameter. A bolt 37 having a tip portion 37b passed through a support hole 9 of a holding member 3 and held by the holding member 3 by axial tightening and a main body portion 37a protruding from the holding member 3.
And an inner sleeve 27 that fits into the protruding main body portion 37a of the bolt 37, and the inner sleeve 2 is axially tightened.
A support member 25 for elastically supporting the other member 7 in a swingable manner by contacting the opposite surfaces 47, 53 of the respective members 7 with the opposing surfaces 43, 57.
And a fitting hole 41 that is formed larger than the outer diameter of the bolt 37 and has one of the mating surfaces 43 on the back side on the surface 19 of the holding member 3 on the side where the main body portion 37a of the bolt 37 projects. It is characterized in that the inner sleeve 27 is provided with a fitting portion 45 having an end surface 47 which is closely fitted in the fitting hole 41 and is in contact with the mating surface 43 on the inner side of the fitting hole 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing support device for an automobile member used for elastically supporting a shock absorber on a wheel side.

[0002]

2. Description of the Related Art As a conventional swing support device of this type,
For example, there are those shown in FIGS. 3 and 4 and those having a similar structure to those described in JP-A-59-149812.

FIG. 3 is a cross-sectional view showing the periphery of the end portion of the rear axle 1, and the lower end portion of the shock absorber 7 which is another member can be swung via the swing support device 5 on the rear axle case 3 which is a holding member. Elastically supported. FIG. 4 is an enlarged sectional view showing a portion of the swing support device 5.
As shown in FIG. 4, a support hole 9 is formed through the holding portion 4 of the rear axle case 3. Pin 11 in support hole 9
And a flange portion 13 is provided on the pin 11 and is in contact with one surface 15 of the holding portion 4. The other end portion 17 of the pin 11 projects from the other surface 19 of the holding portion 4, and a female screw portion 21 is provided on the shaft center portion. The other end portion 17 is formed to have a small diameter and is provided with an inclined mating surface 23.

An inner sleeve 27 of a mount insulator 25 as a supporting member is fitted to the other end 17 of the pin 11. An inclined enlarged portion 29 is formed at the end of the inner sleeve 27, and is fitted to the inclined surface 23. The mount insulator 25 sequentially has a rubber 31 for vibration damping and an outer sleeve 33 outside the inner sleeve 27, and the boss portion 35 of the shock absorber 7 is fitted and supported on the outer sleeve 33. A bolt 37 is fastened to the female thread portion 21 of the pin 11, and the inner sleeve 27 is axially fastened by fastening the bolt 37 via a washer 39.

Therefore, the shock absorber 7 can be elastically supported on the holding portion 4 of the rear axle case 3 so as to be swingable by the swing support device 5.

[0006]

However, the above structure requires the pin 11 as a special member in addition to the bolt 37 and the washer 39 as another member. Therefore, there is a problem that the number of parts is large and assembly and parts management are complicated. Further, since the pin 11 has a structure to be press-fitted into the support hole 9 of the holding portion 4, there is a problem that the assembling work becomes more complicated.

On the other hand, the pin 11 is eliminated and the bolt 3
If the diameter of 7 is made equal to that of the pin 11, and the length thereof is made long so as to project toward the one surface 15 side of the holding portion 4, the bolt 37 can be fastened with a general nut. However, with such a structure,
Positioning of the mount insulator 25 is complicated at the time of assembly, and all the force acting in the direction orthogonal to the bolt 37 is applied to the bolt 37. Therefore, it is necessary to make the bolt 37 thicker than the bolt shaft diameter required for fastening. However, there is a problem that the cost is increased.

On the other hand, the above-mentioned Japanese Patent Laid-Open No. 59-14981.
By disposing a metal sleeve on the outer side of the bolt as in the swing support device described in Japanese Patent Publication No. 2 publication, the force in the direction orthogonal to the bolt can be shared by the metal sleeve, and the diameter of the bolt can be reduced. . However, not only the number of parts increases, but also the metal sleeve has to be press-fitted into the holding portion of the rear axle case, which leaves a problem in terms of easy assembly.

Therefore, it is an object of the present invention to provide a swing support device which has a small number of parts, is easy to assemble, and can suppress an increase in bolt diameter.

[0010]

According to a first aspect of the present invention, there is provided a bolt, the tip of which is passed through a supporting hole of a holding member, which is held by the holding member by axial tightening, and whose main body projects from the holding member. An inner sleeve fitted to the protruding main body portion of the bolt is provided, and by axially tightening, both ends of the inner sleeve are in contact with respective opposing surfaces to elastically support another member with respect to the holding member so as to be swingable. And a supporting member for
On the surface of the holding member on the side where the main body of the bolt projects, a fitting hole is formed that is larger than the outer diameter of the bolt and has one of the mating surfaces on the back side, and the inner sleeve is It is characterized in that a fitting portion having the end face which is closely fitted in the fitting hole and is in contact with the mating surface on the inner side of the fitting hole is provided.

Therefore, at the time of assembling, the fitting portion of the inner sleeve can be fitted into the fitting hole of the holding member so that the end surface is in contact with the mating surface on the inner side of the fitting hole. Can be done. After the assembly, the bolt orthogonal force can be shared by the bolt and the inner sleeve. Further, the inner sleeve can be directly tightened in the axial direction by the bolt, and the number of parts can be reduced.

The invention of claim 2 is the swing support device for an automobile member according to claim 1, wherein the bolt has a bolt head, and the other of the mating surfaces is provided on the bolt head. It is characterized by

Therefore, in addition to the operation of the first aspect of the invention, the end surface of the inner sleeve can be directly axially tightened by the mating surface of the bolt head.

According to a third aspect of the present invention, there is provided the swing support device for an automobile member according to the first or second aspect, wherein the inner sleeve has a flange portion including an end face in contact with the other of the mating faces. And

Therefore, in addition to the effect of the invention of claim 1 or 2, the flange portion can be brought into contact with the other of the mating surfaces, and the washer can be omitted.

The invention of claim 4 is the swing support device for an automobile member according to any one of claims 1 to 3, wherein the support hole of the holding member is provided so as to penetrate the holding member. The bolt is characterized in that the tip of the bolt penetrates the support hole and is exposed from the support hole, and a nut for tightening the axial direction is fastened to the tip of the bolt.

Therefore, in addition to the effect of the invention of any one of claims 1 to 3, the bolt can be axially tightened by the nut.

According to a fifth aspect of the present invention, there is provided the swing support device for an automobile member according to any one of the first to third aspects, wherein the support hole has a female screw portion, and the tip portion of the bolt is It is characterized in that it is fastened to a female screw portion to perform the axial tightening.

Therefore, in addition to the effect of the invention of any one of claims 1 to 3, the bolt can be fastened to the female screw portion of the holding member to perform axial fastening.

[0020]

According to the first aspect of the present invention, the assembling work can be facilitated by positioning the inner sleeve during the assembling. After the assembly, the force in the direction orthogonal to the bolt can be shared by the inner sleeve and the bolt, the increase in the bolt diameter can be suppressed, and the cost can be reduced. Moreover, since the force in the direction orthogonal to the bolt is shared by the inner sleeve of the support member, the number of parts is small, and assembly and parts management are easy.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the inner sleeve is directly tightened by the bolt head, the number of parts can be surely reduced.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the separate washer can be omitted by the flange portion, and the number of parts can be surely reduced.

According to the invention of claim 4, in addition to the effect of any one of the inventions of claims 1 to 3, the supporting member can be reliably supported by the holding member.

According to the invention of claim 5, in addition to the effect of any one of claims 1 to 3, a nut for fastening a bolt is not required, and the number of parts can be further reduced.

[0025]

Embodiments of the present invention (embodiments) will be described below. The components corresponding to those in FIGS. 3 and 4 are designated by the same reference numerals for the description, and the duplicated description will be omitted.

(First Embodiment) FIG. 1 corresponds to FIG. 4 and shows an enlarged sectional view of a swing support device according to a first embodiment of the present invention. The support hole 9 of the holding portion 4 of the rear axle case 3 which is a holding member is provided so as to penetrate the holding portion 4. A fitting hole 41 larger than the outer diameter of the bolt 37 is provided on the other surface of the holding portion 4, that is, the surface 19 of the bolt 37 on the side where the main body portion 37a projects. One of the mating surfaces 43 is formed on the inner side of the fitting hole 41.

Mount insulator 2 which is a support member
The inner sleeve 27 of No. 5 is formed to have a uniform diameter, and one end of the inner sleeve 27 serves as a fitting portion 45. The outer diameter of the fitting portion 45 is formed to be substantially the same as the inner diameter of the fitting hole 41, and they are closely fitted. The inner sleeve 27 is not limited to one having a uniform diameter, but the body shown in FIG. 1 can be formed to have a larger diameter than the fitting portion 45. In the structure shown in FIG. 1, the inner sleeve 27 may be formed to have a large diameter with respect to the main body. When the fitting portion 45 is formed with a large diameter, the fitting hole 41 is also formed with a large diameter accordingly. The end surface 47 of the fitting portion 45 is in contact with the mating surface 43 of the fitting hole 41. The inner peripheral diameter of the inner sleeve 27 is formed to be substantially the same as that of the support hole 9. A flange portion 49 is integrally provided on the other end portion of the inner sleeve 27. The flange 49 is an end surface 51 that contacts the mating surface.
The end surface 51 is flush with the end surface 53 of the inner sleeve 27.

The bolt 37 has a bolt head 55, and the other head surface 57 is provided on the bolt head 55. The outer diameter of the bolt 37 is formed to be slightly smaller than the inner diameters of the inner sleeve 27 and the support hole 9, and the tip portion 37b penetrates the support hole 9 and is exposed from the support hole 9. This tip 3
A nut 61 is fastened to 7b via a washer 59 to perform axial tightening.

Therefore, the bolt 37 is inserted into the support hole 9 of the holding portion 4 of the rear axle case 3 which is a holding member and the tip portion 37b.
Is passed through and is held in the holding portion 4 by axial tightening,
Moreover, the main body portion 37a is configured to project from the holding portion 4. In addition, the mount insulator 25, which is a supporting member,
Has an inner sleeve 27 that fits into the protruding main body portion 37 a of the bolt 37, and the inner sleeve 2 is axially tightened.
Both end surfaces 47, 55 of 7 are in contact with the respective opposing surfaces 43, 57 to elastically support the shock absorber 7, which is another member, in a swingable manner.

When assembling, first, the fitting portion 45 of the inner sleeve 27 is fitted into the fitting hole 41 of the holding portion 4 before the bolt 37 is inserted.
And the end surface 47 is brought into contact with the mating surface 43. Thereby, the inner sleeve 27 can be positioned both in the radial direction and the axial direction, and the assembling work can be remarkably easily performed.

Then, the bolt 37 is inserted from the flange portion 49 side of the inner sleeve 27, the tip portion 37b is made to penetrate the support hole 9, and is exposed to the surface 15 side. This tip 37
The nut 61 can be fastened to the b via the washer 59 to perform axial tightening, and the swing support device 5 can swingably support the shock absorber 7.

Therefore, the assembling work becomes extremely simple.
Further, the inner sleeve 27 includes the flange portion 4 including the end surface 51.
Since 9 is integrally provided, a washer is unnecessary at this portion, and the number of parts can be reduced. Since the bolt 37 penetrates the support hole 9, the inner sleeve 27 can be securely axially tightened to the holding portion 4 by the bolt 37 and the nut 61. Further, the bolt 37 can be fastened with the general nut 61, and the cost can be reduced.

After assembly, the force in the direction orthogonal to the bolt can be shared by the fitting portion 45 of the inner sleeve 27 fitting into the fitting hole 41, and the force acting on the bolt 37 can be reduced to reduce the bolt diameter. Can be suppressed. or,
The axial force acting on the inner sleeve 33 can be received by the end surface 47 abutting against the mating surface 43,
Reliable support can be achieved. In addition, since such a structure uses the inner sleeve 27 of the mount insulator 25 instead of providing a special metal sleeve on the outer side of the bolt 37, the number of parts is reduced, and assembly and management of parts are easy. Therefore, the cost can be remarkably reduced.

(Second Embodiment) FIG. 2 shows a second embodiment of the present invention and is a sectional view corresponding to FIG. In the second embodiment, the support hole 9 does not penetrate, and the support hole 9 is provided with the female screw portion 63. Then, the front end portion 37b of the bolt 37 is fastened to the female screw portion 63 to perform axial tightening. Other configurations are the same as those of the first embodiment shown in FIG.

Therefore, also in the second embodiment, it is possible to obtain substantially the same operational effects as in the first embodiment. or,
In the second embodiment, the bolt 37 is attached to the female screw portion 6 of the support hole 9.
Since it is only fastened to 3, the nut can be eliminated, the number of parts can be further reduced, the assembly and the parts management can be further facilitated, and the cost can be further reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of main parts according to a second embodiment of the present invention.

FIG. 3 is a perspective view according to a conventional example.

FIG. 4 is a sectional view of a main part according to a conventional example.

[Explanation of symbols]

 3 Rear Axle Case (Holding Member) 4 Holding Part 5 Swing Supporting Device 7 Shock Absorber (Other Member) 9 Support Hole 19 Surface of Bolt Body Projecting Side 25 Mount Insulator (Supporting Member) 27 Inner Sleeve 37 Bolt 37a Body Part 37b Tip part 41 Fitting hole 43, 57 Counter surface 45 Fitting part 47, 51, 53 End face 49 Flange part 55 Bolt head 61 Nut 63 Female thread part

Claims (5)

[Claims] 1. A bolt, the tip of which is passed through a support hole of a holding member, which is held by the holding member by axial tightening, and whose body portion projects from the holding member, and which fits into the body portion from which the bolt projects. A support member having an inner sleeve, and both ends of the inner sleeve being in contact with respective opposing surfaces by tightening in the axial direction so as to elastically support another member with respect to the holding member; On the surface where the body portion of the bolt projects, a fitting hole that is formed larger than the outer diameter of the bolt and has one of the mating surfaces is provided on the back side, and the inner sleeve has the fitting hole. An oscillating support device for an automobile member, comprising: a fitting portion that closely fits and that has the end surface that is in contact with a mating surface on the inner side of the fitting hole. 2. The swing support device for an automobile member according to claim 1, wherein the bolt has a bolt head, and the other of the mating surfaces is provided on the bolt head. Swing support device for automobile parts. 3. The swing support device for an automobile member according to claim 1, wherein the inner sleeve has a flange portion including an end face that is in contact with the other of the mating faces. Swing support device. 4. The swing support device for an automobile member according to claim 1, wherein the support hole of the holding member is provided so as to penetrate the holding member, and the bolt is A swing support device for an automobile member, wherein a tip portion is exposed through the support hole through the support hole, and a nut for performing the axial tightening is fastened to the tip portion of the bolt. 5. The swing support device for an automobile member according to claim 1, wherein the support hole has a female screw portion, and a tip portion of the bolt is fastened to the female screw portion. A swing support device for an automobile member, characterized in that the axial tightening is performed.