JPH0328541A - Upper fitting structure of strut-type suspension apparatus - Google Patents

Abstract

PURPOSE:To increase the rigidity of the fitting part by making a supporting part in a wheel house the upper/lower double-structure made up of an upper supporting member and a lower supporting member. CONSTITUTION:An upper supporting member 3 and a lower supporting member 4 are fixed to the upper end of a tower part 2, in which a strut-type suspension apparatus is arranged, in such a way that both members 3 and 4 cover the upper end opening of the tower part 2. An upper flange 12a of a fitting flange 12 abuts on the lower surface of the upper supporting member 3, while a lower flange 12b abuts on the lower surface of the lower supporting member 4. With this contrivance, the rigidity of a fitting part can be increased without increasing the number of bolts or the fitting area.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an upper mounting structure for a strut suspension system. (Prior Art) Conventionally, in a strut type suspension system, the structure in which the upper mounting part is attached to the inner wheel house is generally as disclosed in, for example, Japanese Utility Model Application Publication No. 58-81103. It is true. An example of a similar structure will be explained with reference to FIG.
A substantially flat mounting flange 34 is integrally provided from the wheel house inner 36, and two to four bolts 35 are welded to the mounting flange 34. These bolts 35 are inserted into the bolt holes of the support member 37 and fastened and fixed with nuts 38.

(Problem to be Solved by the Invention) However, in the above-mentioned tJI, the rigidity of the support member 37 of the 36 examples of the wheel house inner is low, and there is a problem that it is unstable when a large uplift load or bending moment is applied. Ta. In addition, as a countermeasure to this problem, it is possible to improve the rigidity by increasing the number of bolts 35 and increasing the integrity of the mounting flange 34 and the support member 37, but it is difficult to improve the rigidity by increasing the number of bolts. Not only is there a limit, but increasing the number of bolts requires expanding the area of the mounting area, which creates the problem of narrowing the engine room and language room. In view of the above-mentioned conventional problems, it is an object of the present invention to provide an upper mounting structure for a strut type suspension system in which the rigidity of the mounting portion is increased. (Means for Solving the Problems) In order to achieve the above object, the present invention provides a mounting flange integrally extending from an outer cylinder at an upper mounting part of a strut type suspension system and a support part at an upper end of a wheel house inner. This upper mounting device for a strut type suspension system is characterized in that the support part of the inner wheel house has a double layered structure, consisting of an upper support member and a lower support member. Further, a portion of the fastening portion of the mounting flange with the support portion and the remaining fastening portion may be formed at different height positions, and each may be fastened and fixed to the upper support member, the lower support member, or both. is preferred.

(Function) According to the above-mentioned structure of the present invention, the support part of the wheel house inner has an upper and lower double structure consisting of an upper support member and a lower support member, so that great rigidity can be obtained and the number of bolts can be reduced. The necessary rigidity can be provided without increasing the mounting area. Furthermore, by connecting the upper and lower support members to both the upper and lower support members with different height positions of the fastening portions of the mounting flange to the support member, the opening edges of both support members of the double structure can be connected via the mounting flange. This makes it possible to further increase the rigidity and reduce the bending moment at the input point to the mounting flange.
Since it can be supported at a point, it has great bending rigidity. (Example) An example of the present invention will be described below with reference to FIGS. 1 to 4. Reference numeral 1 denotes a wheel house inner, and a tower part 2 on which a strut suspension system is arranged is bulged inward in the width direction of the vehicle body and further protrudes upward from the upper part of the wheel house inner L, and its upper end portion is formed in a roughly U-shape that is open outward in the width direction of the vehicle. This tower part 2
An upper support member 3 and a lower support member 4 are fixed to the upper end portion so as to cover the upper end opening of the tower portion 2. On three sides of the periphery of the lower support member 4, joining greens 4a are formed to hang downward and are joined to overlap the inner periphery of the upper edge of the tower part 2, and the remaining one is formed on the outer periphery of the wheel house inner 1. A joining edge 4b connecting the upper ends of the joined joining edges 1a is formed upwardly. On three sides of the periphery of the upper support member 3, a joining edge 3a is formed to hang down downward and is joined to overlap the outer periphery of the upper peak of the tower part 2.
The remaining one is formed with a joining edge 3C that is joined to the upper surface of the lower support member 4 via a side wall 3b of an appropriate height.

Reference numeral 5 denotes an upper mounting portion of the strut suspension system, and a seat plate 7 and the bottom wall of a bottomed cylindrical inner cylinder 8 are fastened and fixed to the upper end of the thick absorber 6 with nuts 9. Inner cylinder 8
An outer cylinder 10 is disposed at an appropriate interval on the outer periphery of the outer cylinder 10, and the inner cylinder 8 and outer cylinder 10 are integrally connected via an elastic body 11. protrudes outward in the radial direction. The upper flange at the center of this mounting flange 12! 2a is formed into a rectangular shape with rounded corners, and has lower flanges 12b protruding outward from a pair of diagonal corners so as to be at a lower position than the upper flange 12a. The upper flange 12a of the mounting flange 12 contacts the lower surface of the upper support member 3, and the lower flange 12b contacts the lower surface of the lower support member 4. A pair of upwardly extending mounting bolts 13a are welded to a pair of corners of the upper flange 12a that do not extend from the lower flange 12b, and a pair of upwardly extending mounting bolts 3b are welded to the lower flange 12b.
is welded. The upper support member 3 has an opening 14 through which the outer cylinder 10 of the upper mounting portion 5 of the strut type suspension passes, and four bolt holes 15 through which the mounting bolts 13a and 13b pass through the outer periphery of the opening 14. It is formed. The upper flange t of the mounting flange 12 is attached to the lower support member 4.
An opening l6 through which the bolt 2a passes is formed, and a bolt hole 17 is formed at a position corresponding to a pair of mounting bolts 13b. Further, a pusher plate interposed between the bolt hole 17 and the upper support member 3 is arranged above the bolt hole 17. And each mounting bolt }13a of the mounting flange l2,
A nut 19 is screwed onto the upper end portion protruding from the bolt hole 15 of the upper support member 3 of 13b, and the mounting flange 1
2 is fastened and fixed to the upper support member 3 and the lower support member 4. In addition, in FIGS. 2 to 4, 20 is a coil spring of the slat type suspension system, and 21 is a shock absorber 6.
22 is a wheel. According to the above structure, the upper end part of the tower part 2 in the wheel house inner l, which supports the upper mounting part 5 of the strut type suspension system, has a vertical double structure with the upper support member 3 and the lower support member 4. The mounting flange l2 has an upper flange 12a and a lower flange 12b at different height positions, so that great rigidity can be obtained.
Since the upper support member 3 is connected to the upper support member 3 and the lower support member 4 via push l8, respectively, the opening edges of both support members 3 and 4 of double structure are connected via the mounting flange 12. The rigidity can be further increased, and the mounting flange 12 can be
Since the bending moment transmitted to is supported at two points, the upper support member 3 and the lower support member 4, which are vertically spaced apart, large bending rigidity is obtained.

The present invention is not limited to the above embodiments. For example, in the above embodiment, the lower flange 1 of the mounting flange 12
A push 18 is interposed between the upper support member 3 and the lower support member 4 corresponding to the mounting bolt 13b extending upward from the upper support member 3, and a nut 19 is screwed onto the mounting bolt 13b on the upper support member 3. Although an example of fastening has been shown, as shown in FIG.
A short mounting bolt 13c may be screwed into the lower surface of b to fasten and fix it.

Further, as shown in FIG. 6, an extension part 12c extends downward from the edge of the lower flange 12b, and a nut 24 is attached to the inner surface of the extension part 12c.
It is also possible to fix the upper support member 3 by screwing the mounting bolt 13d from the outside of the joint edge 3a of the upper support member 3.

According to this embodiment, the length of the lower flange 12b protruding from the upper flange 12a of the mounting flange 12 can be shortened, and the amount of bulge of the tower portion 2 of the inner wheel house 1 can be reduced accordingly, making effective use of space. can do. Further, in the above embodiment, an example is shown in which the mounting flange 12 is provided with an upper flange 12a and a lower flange portion 12b having different height positions, and each is fastened and fixed to the upper support member 3, the lower support member 4, or both. However, the mounting flange l2 is attached to either one of the support members 3.
Alternatively, it may be fastened and fixed only to 4. In that case, it is preferable to simultaneously fasten the opening edges of the upper support member 3 and lower support member 4 to each other, since high rigidity can be obtained. (Effects of the Invention) According to the upper mounting structure of the strut type suspension system of the present invention, the support part of the wheel house inch has a vertical double structure with an upper support member and a lower support member, so that great rigidity is achieved. This makes it possible to provide the necessary rigidity without increasing the number of bolts or mounting area, and therefore without making the engine room or luggage room narrower. Furthermore, by connecting the upper and lower support members to both the upper and lower support members with different height positions of the fastening portions of the mounting flange to the support member, the opening edges of both support members of the double structure can be connected via the mounting flange. This makes it possible to further increase the rigidity, and also to reduce the bending moment at the input point to the mounting flange with two vertically spaced
It is supported at points and has great effects such as high bending rigidity.

[Brief explanation of drawings]

1 to 4 show an embodiment of the upper mounting structure of the strut type suspension system of the present invention, FIG. 1 is a perspective view of the wheel house inner, and FIG. 2 is a perspective view of the inner wheel house, and FIG. −■
3 is a vertical sectional view taken along line 1 in FIG. 1, FIG. 4 is an exploded perspective view of the same, and FIG. FIG. 6 is a longitudinal sectional view of a main part of still another embodiment of the present invention, and FIG. 7 is a longitudinal sectional view of a conventional example. i 1－－－－－・−・−・・１・・１・Wheel house inner 2−・−・−・−・・−・−・・・・・・・
...Tawa part 3...1...1...1...
−・・・Upper support member 4・・・・−・・−・・
・−・・−・1 Lower support member 5・・−−−−
−−−−−・1・・・・Top mounting part 0−・−−−
1-・--111・・・・・Outer cylinder 2・・・・1111・・・1・・・・・・1 Mounting flange 2a・
・－・・・・１・・・・・・・・・・・・１ Upper flange 2b
・−・−・・・−・−・−・・−・Lower flange 2c
・-・11-1---・1 extension part 3a to 13d
One mounting bolt

Claims (2)

[Claims] (1) In the upper mounting device of a strut type suspension, in which the mounting flange integrally extended from the outer cylinder at the upper mounting portion of the strut type suspension is fastened and fixed to the support portion at the upper end of the wheel house inner, An upper mounting structure for a strut-type suspension system, characterized in that the support part of the structure has a vertical double structure consisting of an upper support member and a lower support member. (2) A portion of the fastening portion of the mounting flange with the support portion and the remaining fastening portion are formed at different height positions, and each is fastened and fixed to the upper support member, the lower support member, or both. An upper mounting structure for a strut type suspension system according to claim 1.