JP2587050Y2 - Vehicle side mounting structure of strut type suspension device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strut type suspension device for suspending and supporting a front wheel or a rear wheel of a motor vehicle, and more particularly to a mounting structure of a shock absorber unit on a vehicle body which can be easily adapted to automatic assembly.

[0002]

2. Description of the Related Art A strut type suspension apparatus uses a shock absorber unit as a part of a suspension link, and is widely used in small and medium-sized vehicles because of its simple structure and advantageous space. As a structure for mounting such a suspension device on the vehicle body side, conventionally, as described in, for example, Japanese Utility Model Application Laid-Open No. 63-162614, a support bracket mounted on a piston rod of a shock absorber unit is provided with a mounting bracket. There is one that is attached to the vehicle-body-side attachment portion with a pair of bolts through the middle.
The mounting structure is configured, for example, as shown in FIG. That is, the support unit 24 is formed by sandwiching and fixing the support rubber 23 by the bottomed cylindrical upper bracket 21 and the flat base plate 22 fixed to the upper bracket 21. A bowl-shaped mounting bracket 25 is fixed to the support rubber 23 so as to cover the mounting rubber 23, and a pair of mounting bolts 25a is implanted in the mounting bracket 25. The support unit 24 includes the piston rod 2
The mounting bolt 25 a is inserted into a bolt hole 28 a of the vehicle-body-side mounting portion 28, and is fastened and fixed by a nut 29. Reference numeral 30 denotes the base plate 22 and the buffer spring 3
1 is a bearing interposed between the upper sheet 32 and the upper sheet 32 which supports the upper end of the bearing 1.

[0003]

[0004] Recently, automatic assembly by a robot has been advanced, and therefore, a structure which can easily cope with automatic assembly is also required in designing a suspension device. However, in the case of the above-mentioned conventional suspension device body-side mounting structure, the two mounting bolts 25a need to be phase-aligned with the two small-diameter bolt holes 28a when mounting the vehicle to the vehicle body. There is a problem that assembly cannot be easily performed. In addition, since the support rubber 23 is disposed around the bottomed cylindrical upper bracket 21 and the mounting bracket 25 is further fixed to the support rubber 23, there is a problem that the diameter of the upper part of the shock absorber unit becomes large. . Furthermore, since the upper bracket 21 has a cylindrical shape with a bottom, rainwater or the like easily accumulates in the bracket 21, and there is a problem that a large-diameter cap is required to avoid this.

The present invention has been made in view of the above-mentioned conventional problems, and can easily cope with automatic assembling without the need for phase matching. The upper part of the shock absorber unit has a small diameter, and rainwater near the mounting portion. It is an object of the present invention to provide a vehicle-body-side mounting structure for a strut-type suspension device that does not accumulate.

[0005]

According to the present invention, a base plate 2 and a cylindrical spacer 3 are mounted and fixed on a piston rod 1 of a shock absorber unit.
A support rubber made of an elastic member for absorbing the vibration from the road surface between the upper surface of the base plate 2 and the vehicle body-side mounting portion 10 by projecting the upper end of the vehicle body upward from the mounting hole 10a of the vehicle body-side mounting portion 10. 9, the inner surface of the support rubber 9 is brought into close contact with the spacer 3, and the outer surface thereof is brought into close contact with the vehicle-body-side mounting portion 10. Hole 10
and a stopper plate 9a projecting upward from the piston rod 1 is integrally formed, and a stopper plate 11 having a diameter larger than the mounting hole 10a is mounted on the upper projecting portion of the piston rod 1 so as to contact the upper end of the spacer 3. 11 by pressing the stopper 9a.
The strut type suspension device has a larger diameter than the mounting hole 10a and the mounting hole 10a is covered by the enlarged stopper portion 9a.

[0006]

According to the mounting structure of the suspension device on the vehicle body side according to the present invention, the base rubber and the spacer 3 are attached and fixed to the piston rod 1 in, for example, a sub-line, and the support rubber is brought into close contact with the outer surface of the spacer 3. By arranging 9, the buffer unit is assembled in advance. In mounting the shock absorber unit on the vehicle body, the stopper portion 9a of the piston rod 1 and the support rubber 9 is inserted into the mounting hole 10a of the vehicle body side mounting portion 10 to protrude upward. The stopper plate 11 is fixed to the upper protruding portion so as to contact the upper end of the spacer 3. Then, the stopper plate 11 presses the stopper portion 9a to increase the diameter to a larger diameter than the mounting hole 10a, and the expanded stopper portion 9a covers the mounting hole 10a.

As described above, according to the present invention, when mounting the shock absorber unit to the vehicle body, the phase matching between the mounting bolt and the small-diameter bolt hole as in the related art is unnecessary, and the upper ends of the piston rod 1 and the stopper portion 9a are fixed. Large diameter mounting hole 1
Since it only needs to be aligned with 0a, it is possible to easily cope with automatic assembly. Further, since the support rubber 9 is arranged so as to be in contact with the spacer 3 fitted and mounted on the piston rod 1, and a mounting bracket as in the related art is unnecessary, the diameter of the support rubber 9 can be small. In addition, since the upper end of the piston rod 1 projects upward and the stopper plate 11 is attached thereto, rainwater and the like do not collect near the vehicle-body-side mounting portion. When the stopper plate 11 is mounted, the stopper portion 9a of the support rubber 9 expands, and the expanded stopper portion 9a
Since the upper portion of the shock absorber unit 9a is covered, the stopper portion 9a functions as a cushioning material when the stopper plate 11 comes into contact with the vehicle-body-side mounting portion 10 when the shock absorber unit is extended, thereby reducing a tapping sound.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIGS. 1 and 2 are views for explaining a vehicle-side mounting structure of a front-wheel strut-type suspension device according to a first embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a piston rod of a shock absorber unit constituting a strut type suspension device. A substantially flat base plate 2 is disposed on the step portion 1a of the piston rod 1, and a spacer 3 is disposed on the upper surface of the base plate 2. The spacer 3 is a cylindrical member having an internal thread on the inner surface, and the base plate 2 is fixed to the step portion 1a by being screwed into a thread portion 1b of the piston rod 1. An upper portion of the spacer 3 is provided with a mounting hole 10 a of the vehicle body side mounting portion 10.
, And the threaded portion 1 b of the piston rod 1 projects further upward than the upper end of the spacer 3.

An upper sheet 5 for pressing and supporting the upper end of the buffer spring 4 is disposed below the base plate 2. Between the upper sheet 5 and the base plate 2, an outer cylinder of a shock absorber unit is provided. Bearing 6 that allows rotation
Is interposed. Reference numeral 8 denotes a stopper rubber interposed between the outer cylinder of the shock absorber and the upper sheet 5, and absorbs a shock during a maximum stroke.

Further, a support rubber 9 for absorbing vibration from a road surface is fitted around the outer periphery of the spacer 3. The inner periphery of the support rubber 9 is in close contact with the outer surface of the spacer 3, and the outer periphery is in close contact with the inner surface of the vehicle body-side mounting portion 10. A stopper 9a is integrally formed on the upper portion of the support rubber 9, and the stopper 9a
Is protruded upward from a mounting hole 10a of the vehicle body-side mounting portion 10 and is bent outward by a stopper plate 11 to be described later so as to cover a peripheral edge of the mounting hole 10a.

A stopper plate 11 is mounted on an upper protruding portion of the piston rod 1, and the plate 11 is fixed to an upper end of the spacer 3 by a nut 12. The stopper plate 11 is provided with the mounting hole 10a.
The diameter is set to be larger, and presses the stopper 9a of the support rubber 9 as described above. The stopper portion 9a functions as a cushioning material when the stopper plate 11 contacts the periphery of the mounting hole 10a when the shock absorber unit is extended.

Next, the operation and effect of this embodiment will be described. In this embodiment, the shock absorber unit is assembled in a sub-line in advance, and this is attached to the vehicle body.
First, in the sub-line, the stopper rubber 8 and the buffer spring 4 are mounted on the piston rod 1, and the upper sheet 5 is put on the stopper rubber 8, and the bearing 6 and the base plate 2 are placed on the upper surface of the upper sheet 5. Next, the spacer 10 is screwed into the threaded portion 1b of the piston rod 1, the base plate 2 is abutted on the stepped portion 1a of the piston rod 1, and is fixed.
Attach. To mount the shock absorber unit on the vehicle body side, as shown in FIG.
Of the support rubber 9 and the stopper portion 9a of the support rubber 9 are inserted into the mounting holes 10a of the vehicle body-side mounting portion 10 so that these portions protrude upward. Is pressed against the inner surface of Finally, a stopper plate 1 is provided on the upper end of the piston rod 1.
The plate 11 is fixed to the upper end of the spacer 3 with a nut 12.

As described above, in the vehicle-body-side mounting structure according to the present embodiment, in order to mount the shock absorber unit to the vehicle body, the upper end portion of the piston rod 1 and the stopper portion 9a of the support rubber 9 integrated with the piston rod 1 must be connected to one another. It is only necessary to align the two mounting bolts with the large-diameter mounting holes 10a, and the phase matching between the two mounting bolts and the two small-diameter bolt holes as in the related art is unnecessary. Therefore, the mounting operation is so simple that automatic assembly can be easily performed.

Further, the support rubber 9 is connected to the piston rod 1.
The outer diameter D1 of the support rubber 9 can be reduced by an amount corresponding to the reduction of the inner diameter d1 of the support rubber 9, so that the upper part of the shock absorber unit can be miniaturized. And space efficiency is improved. By the way, in the case of the conventional structure, as shown in FIG. 4, the outer diameter D2 increases as the inner diameter d2 of the support rubber 23 increases, and the mounting flange 25 is provided.
The upper part of the shock absorber unit becomes large.

Further, since the upper end of the piston rod 1 is protruded upward and the stopper plate 11 is mounted thereon, rainwater and the like do not accumulate near the mounting portion. Incidentally, in the case of the conventional structure, as shown in FIG. 4, since the bottomed cylindrical upper bracket 21 is used, there is a possibility that rainwater or the like may accumulate in this portion, and a large-diameter cap is required to prevent this. Met.

In the first embodiment, the spacer 3 is threaded, and the spacer 3 itself is screwed into the piston rod 1 to fix the base plate 2 to the step 1a. It does not need to be structured. For example, a double nut structure in which the spacer is fixed with a separate lock nut and the stopper plate 11 is fixed on the upper surface of the nut may be adopted.

FIG. 3 is a diagram for explaining a second embodiment of the present invention, which is an example in which the present invention is applied to a rear wheel suspension device. In the figure, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts. In the second embodiment, the base plate 2 also serves as an upper sheet for supporting the upper end of the buffer spring 4. Since the shock absorber unit does not rotate, no bearing is provided. Also in the second embodiment, similar to the first embodiment, there are effects that it is easy to cope with automation, that the size of the upper part can be reduced, and that there is no possibility of accumulation of rainwater or the like.

In the case of the rear wheel mounting structure, it is not always necessary to fix the spacer 3 to the step portion 1a by the sub-line. In this case, the suppressor 3 has a shape having no screw on the inner surface, and in the sub-line, the buffer spring 4, base plate 2, spacer 3, and support rubber 9 are simply stacked to form a buffer unit. 1
The piston rod 1 may be protruded upward by pushing it up from below into the 0 mounting hole 10a or by grounding the tire, and the snapper plate 11 may be fixed to this.

[0020]

As described above, according to the mounting structure of the strut type suspension device on the vehicle body side according to the present invention, the upper end portion of the stopper portion of the piston rod and the support rubber has a large diameter when mounting the shock absorber unit to the vehicle body. It only needs to be aligned with the mounting hole on the vehicle body side, which has the effect of being able to easily respond to automatic assembly.The support rubber is arranged so as to be in close contact with the spacer fitted and mounted on the piston rod. There is an effect that the upper part can be miniaturized. In addition, the upper end of the piston rod protrudes upward and a stopper plate is mounted here, which has the effect of preventing rainwater or the like from collecting near the vehicle body side mounting portion, and the diameter has been further expanded by mounting the stopper plate. The stopper portion functions as a cushioning material when the stopper plate hits the vehicle body mounting portion, and has an effect of reducing the hitting sound.

[Brief description of the drawings]

FIG. 1 is a sectional front view showing a vehicle-side mounting structure of a strut type suspension device according to a first embodiment of the present invention.

FIG. 2 is an exploded front view for explaining a vehicle-body-side mounting step in the embodiment.

FIG. 3 is a sectional front view of a second embodiment of the present invention.

FIG. 4 is an exploded front view showing a conventional vehicle body mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piston rod 2 Base plate 3 Spacer 9 Support rubber 10 Car body side mounting part 10a Mounting hole 11 Stopper plate

Claims (1)

(57) [Scope of request for utility model registration] When a base plate and a cylindrical spacer are mounted and fixed on an upper part of a piston rod of a shock absorber unit.
In both cases, make sure that the upper end of the spacer is
To protrude Luo upward, place a support rubber made of an elastic member for absorbing vibrations from the road surface between the mounting holes circumference of the upper surface and the body side mounting portion of the base plate, the inner surface of the support rubber The outer surface is brought into close contact with the spacer on the vehicle body side mounting portion, and the upper end of the support rubber is
In a natural state, the diameter is smaller than the mounting hole, and
The stopper that protrudes from the piston lock
Stopper with a diameter larger than the above mounting hole
The spacer is mounted so that it contacts the upper end of the spacer.
The stopper is pressed by the
Expand the stopper to a larger diameter than the mounting hole, and
A vehicle-side mounting structure for a strut-type suspension device, wherein the mounting hole is covered by a stopper portion .