JPH0822678B2 - Suspension link equivalent member mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a mounting structure of a member equivalent to a suspension link.

<Prior Art> An example of a conventional mounting structure for a member equivalent to a suspension link is shown in FIG.
-19113). Reference numeral 1 is an axle, and tires (not shown) are attached to both left and right ends. A lower body structure 7 is supported on the axle 1 via a rear suspension mechanism 6 including a suspension spring 2, a shock absorber 3, upper and lower links 4, 5, and the like. The vehicle body lower structure 7 mainly includes a floor panel 8, left and right rear side members 9 joined to the lower surface of the floor panel 8 along the front-rear direction, and a cross joined to the upper surface of the floor panel 8 along the left-right direction. It consists of 10 members. Of these, the rear side member 9 has an open cross-sectional structure with a cross-sectional shape, and the rear portion corresponding to the axle 1 is
A rising portion 11 which is curved upward is formed. An upper link bracket 13 is attached to the bottom surface of the rear side member 9 at the rising portion 11 so as to rotatably support a connecting portion 12 of the upper link 4 having the other end 4a connected to the axle 1. On the front side of the link bracket 13, the lower link bracket of the same shape that also pivotally supports the connecting portion 14 of the lower link 5 whose other end 5a is connected to the axle 1.
I have installed 15.

<Problems to be Solved by the Invention> However, in such a conventional technique, the upper link bracket 13 and the lower link bracket 15 are attached to the bottom surface of the rear side member 9, and the brackets 13 and 15 are attached to the rear side. Since the member 9 projects downward from the member 9, the positions at which the axles 1 are supported by the links 4 and 5 are lowered, which may be disadvantageous in the arrangement structure (suspension geometry) of the rear suspension mechanism 6. there were. That is, among the "suspension link equivalent members", there are types that can obtain a superior suspension effect as the positions of the other ends 4a and 5a are higher, but in the conventional mounting structure, the other end is There was a certain limit to the height position of 4a and 5a, and there was also a limit to the suspension effect that could be obtained.

Further, since each bracket 13, 15 projects below the rear side member 9, there is some room for improvement in avoiding road surface interference.

The present invention has been made in view of such a conventional technique, and provides a mounting structure of a suspension link equivalent member in which a bracket for axially supporting the suspension link equivalent member does not project below a vehicle body rigid member. It is a thing.

<Means for Solving the Problem> In order to achieve the above-mentioned object, the suspension link equivalent member mounting structure according to the present invention has a bottom portion of a rear side member having an inverted hat cross-section that is joined to the lower surface of the floor panel. An opening partially having a wide notch is formed in the bracket, the connecting portion of the suspension link equivalent member is provided inside the bracket having a hat-shaped cross section, and the connecting portion is axially supported in the bracket by a horizontally penetrating bolt. Then, the connecting portion shaft supporting portion of the bracket is inserted into the rear side member from the notch of the opening, and the lower flange of the bracket is attached to the bottom surface portion of the rear side member by bolts.

<Operation> Since the connecting portion shaft support portion of the bracket is inserted into the opening formed in the bottom surface portion of the rear side member, the bracket does not protrude below the rear side member. Therefore, since the position of the member corresponding to the suspension link becomes higher accordingly, the position of the other end of the member corresponding to the suspension link also becomes higher, which is advantageous in the arrangement structure (suspension geometry) of the suspension mechanism and facilitates obtaining an excellent suspension effect. .

Further, since the bracket does not project below the rear side member, the bracket does not interfere with the ground or collide with pebbles that have jumped up.

Further, since the connecting portion of the member corresponding to the suspension link is located inside the rear side member, the mounting rigidity of the member corresponding to the suspension link is higher than that in the conventional case.

Further, since the lower flange of the bracket is attached to the bottom surface of the rear side member with a bolt, the work of attaching / removing the bracket is easy and the maintainability is excellent.

In addition, since the opening is formed only in the bottom surface portion of the rear side member, the strength reduction of the rear side member can be suppressed to the minimum, and the reinforcing member is not required.

<Embodiment> A preferred embodiment of the present invention will be described below with reference to FIGS. The same parts as those in the prior art are designated by the same reference numerals, and a duplicate description will be omitted.

Bottom surfaces of the left and right rear side members 16 according to this embodiment
The opening 17 is formed in the portion 17 from the horizontal portion 18 to the rising portion 19. As shown in FIG. 4, the opening 20 has a width size of 1 as a whole, but notches 21 are formed on the left and right so that only a part has a large width size L.

22 is a bracket, and a pair of upright portions 23 facing each other in a size corresponding to the left-right width size of the opening 20,
An upper surface portion 24 that connects the upper ends of the upright surface portions 23, and an upright surface portion 23
Lower flange 25 with the lower part of left and right bent outward
And has a hat-shaped cross section. A shaft hole 29 for inserting a bolt 28 for pivotally supporting the connecting portion 27 of the radius rod 26 serving as a "suspension link equivalent member" is formed substantially at the center of each upright portion 23 of the bracket 22. The welding nut 30 is attached to the shaft hole 29 on one side in advance. In addition, each lower flange of the bracket 22
Two mounting holes 31 are formed in the front and back of the 25 (see FIG. 3). The above-mentioned member called the radius rod 26 in this embodiment is for suppressing lift (lift) on the rear side of the vehicle body when the vehicle is braked by a combination with a strut (not shown), and the other end of the radius rod 26 on the axle side. The higher the position of, the higher the suspension effect (anti-lift effect), the better suspension effect can be expected.

Next, it is necessary to previously attach the connecting portion 27 of the radius rod 26 to the bracket 22 having such a structure. First, the connecting portion of the radius rod 26 whose other end is connected to an axle (not shown) inside the “connecting portion shaft supporting portion” of the bracket 22, that is, in the internal space defined by the upright portion 23 and the upper surface portion 24. 27, the central hole 33 (see FIG. 2) formed in the rubber damper 32 inside the connecting portion 27 and the shaft hole 29 of the upright portion 23 are respectively aligned, and one upright portion Tip 28a of bolt 28 inserted from shaft hole 29 of 23
Is the central hole 33 of the connecting portion 27 and the shaft hole 29 of the upright portion 23 on the other side.
Then, the welding nut 30 previously attached to the shaft hole 29 on the other side is screwed and fastened.

Then, the bracket 22 to which the connecting portion 27 of the radius rod 26 is previously attached is attached to the rear side member 16 this time. That is, first of all the bracket 22
Of the upright portion 23 and the upper surface portion 24, which are the "connecting portion pivotal support portions" of
Insert into the rear side member 16 through the opening 20. At the time of this insertion, the tip 28a and the head portion 28b of the bolt 28 projecting from the left and right ends of the bracket 22 are provided with notches 21 formed in the opening 20, respectively.
The bottom part 17 because it passes through and enters the rear side member 16.
Do not interfere with. This "coupling shaft support" is open
When it has finished entering the inside of the bracket 20, the lower flange 25 of the bracket 22 and the bottom surface portion 17 of the rear side member 16 overlap each other, so that the mounting holes 31 of the lower flange 25 and the mounting holes 34 of the bottom surface portion 17 corresponding to each other (see FIG. 4). Insert the bolt 35 into both of the above and tighten the tip of the bolt 35 with the nut 36. At this point, the bracket 22 is completely attached to the rear side member 16, but the bracket 22 does not project below the rear side member 16. As described above, in the case of the radius rod 26 according to this embodiment, the connecting portion 27 is located inside the rear side member 16, and its position is higher than in the conventional case, so that the position of the other end of the radius rod 26 not shown is shown. Also becomes higher accordingly, and an excellent suspension effect such as the above-described anti-lift effect can be further improved. In addition, the connecting portion 27 is a rear side member.
Being located inside 16 makes the distance between the connecting portion 27 and the rear side member 16 closer to each other, so that the mounting rigidity of the radius rod 26 at the connecting portion 27 is higher than in the conventional case. In addition, even if the bolt 28 becomes loose and tries to come out of the welding nut 30, the head portion 28b of the bolt 28 hits the side surface portion of the rear side member 16, so that the connecting portion 27 is dropped without completely coming off from the welding nut 30. There is no such thing.

In the above description, the radius rod 26 is taken as an example of the "member corresponding to the suspension link", but any member may be used as long as it connects the rear side member to the axle, suspension mechanism and the like.

<Advantages of the Invention> Since the mounting structure of the suspension link equivalent member according to the present invention has the contents as described above, the bracket does not project below the rear side member, and the position of the connecting portion of the suspension link equivalent member is high. Because,
The position of the other end of the member corresponding to the suspension link also becomes higher accordingly, which is advantageous in the arrangement structure (suspension geometry) of the suspension mechanism and facilitates obtaining an excellent suspension effect.

Further, since the bracket does not project below the rear side member and the connecting portion of the suspension link equivalent member is located inside the vehicle body rigid member, the bracket does not interfere with the ground or collide with pebbles that have jumped up. Further, since the mounting rigidity of the member corresponding to the suspension link itself is increased, it is very advantageous in terms of supporting rigidity and protection of the suspension mechanism.

[Brief description of drawings]

1 is a side view of a rear side member showing a mounting structure of a suspension link equivalent member according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II shown in FIG. 1, and FIG. 3 is a radius rod. Fig. 4 is a perspective view of a bracket in which the connecting portion of Fig. 4 is axially supported, Fig. 4 is a bottom view of the rear side member as seen from the direction of arrow IV in Fig. 1, and Fig. 5 is a perspective view of the underbody structure showing the conventional suspension mechanism. It is a figure. 16 …… Rear side member 17 …… Bottom part 20 …… Opening 22 …… Bracket 23 …… Elevation part (connecting part shaft supporting part) 24 …… Upper part (connecting part shaft supporting part) 26 …… Radius rod (suspension link) Equivalent member) 27 ... Connection part

Claims (1)

[Claims] 1. An opening 20 having a wide cutout 21 partially formed in a bottom surface 17 of a rear side member 16 having an inverted hat-shaped cross section joined to the lower surface of a floor panel 8, and a suspension link equivalent member 26. The connecting portion 27 is provided inside the bracket 22 having a hat-shaped cross section, and the connecting portion 27 is axially supported in the bracket 22 by a bolt 28 that extends horizontally, and the connecting portion axially supporting portion of the bracket 22 is connected to the opening 20 The lower flange 25 of the bracket 22 is inserted into the rear side member 16 from the notch 21 portion of the rear side member 16
A suspension link-equivalent member mounting structure, characterized in that it is mounted to the bottom surface portion 17 of each of the members with bolts 35.