JP2520543Y2 - Suspension member connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a connecting structure of a suspension member to which members such as a suspension arm for supporting a vehicle body suspension device of an automobile or the like are supported, and particularly, this suspension member. And a vehicle body side member.

[Conventional technology]

Conventionally, a suspension member extending in the width direction of a vehicle body is coupled to a vehicle body skeleton member such as a floor side member at a lower portion of a vehicle body of an automobile or the like. As a general coupling structure of this suspension member, for example, FIGS. There is a structure as shown in the figure.

The structures shown in FIGS. 6 and 7 show the coupling structure of the rear suspension member disposed and coupled to the rear portion of the vehicle body.

As shown in FIGS. 6 and 7, both ends of the rear suspension member 10 extending in the vehicle width direction are attached to the lower surface of the rear floor side member 20 extending in the vehicle front-rear direction, which is a vehicle body frame member, with bolts, nuts, etc. Are fastened together by the fastening members 70.

Here, FIG. 6 shows a structure in which the rear suspension member 10 is directly connected to the lower surface of the rear floor side member 20, and in FIG. 7, a mount bracket 50 is interveningly connected to the lower surface side of the rear floor side member 20, The structure is shown in which the rear suspension member 10 is coupled via the mount bracket 50.

In the structure in which the rear suspension member 10 is coupled to the vehicle body side member as described above, the rear floor side member 20 which is the vehicle body side frame member is used as the vehicle body side member because the rear suspension member is a stronger and harder member. This is because the strength, rigidity, vibration, and the like can be improved by coupling 10 together.

A structure for connecting the rear suspension member to the rear floor side member as described above, particularly as a structure for connecting via another member such as a mount bracket as shown in FIG. 7, is disclosed, for example, in Japanese Utility Model Laid-Open No. 62-112975. There is an official gazette (Actual Application No. 61-1825).

[Problems to be solved by the device]

However, Fig. 6 and Fig. 7 and Actual Development Showa 62-112975
In the case of the suspension coupling structure disclosed in No. 3, the rear suspension member 10 has both ends coupled to the lower surfaces of the left and right rear floor side members 20, respectively. Since the distance in the vehicle body width direction between the connecting portions is large, the rigidity of the rear suspension member 10 in the vehicle body up-down direction is reduced, and the resonance point in the vehicle body up-down direction is reduced. Vibration noise is generated due to resonance of the rear suspension member 10.

In addition, since the distance between the connecting portions at both ends of the rear suspension member 10 is large as described above, the suspension (not shown) can be moved to the rear suspension member.
When the input point to 10 is P, the distance between the input point P and each of the connecting portions may be large, and the moment force applied to each of the connecting portions of the rear suspension member 10 is large by at least this distance. Therefore, the same problem occurs.

That is, the smaller the distance between the connecting portions between the both ends of the rear suspension member 10 and the left and right rear floor side members 20, the higher the rigidity and resonance point of the rear suspension member 10 in the vertical direction of the vehicle body can be increased. Since the length of the rear suspension member 10 in the vehicle width direction can be shortened and the rear suspension member 10 can be downsized, the weight of the rear suspension member 10 can be reduced.

However, the arrangement coupling position of the rear floor side member 20 is determined from the beginning to an optimal position in terms of the vehicle body structure, and in order to couple the rear suspension member 10 so as to obtain the function as described above, It is not possible to freely move the position of the rear floor side member 20 to connect and dispose it.

Therefore, Fig. 6 and Fig. 7 and the actual exploitation 62-11
In the case of the suspension member coupling structure of No. 2975, the position of the rear floor side member 20 to which the rear suspension member 10 is coupled cannot be changed, which causes the above-mentioned inconvenience.

Therefore, an object of this invention is to reduce the distance between the connecting portions of both ends of the suspension member to the vehicle body width member without being influenced by the disposition connecting position of the vehicle body skeletal member, and to reduce the moment force applied to this connecting portion. And increase the rigidity and resonance point.

[Means for solving the problem]

This invention has a structure in which each end of the suspension member supporting the suspension arm in the vehicle width direction is connected to a vehicle body skeleton member extending in the vehicle front-rear direction on each side of the body panel in the vehicle width direction. This joint structure has a mounting surface that is below the vehicle body frame member and is inward of the vehicle body frame member in the vehicle width direction, and is formed into a closed cross section together with the body panel and the vehicle body frame member. A mounting bracket, arranged within the closed cross section,
The end portion of the suspension member, which includes a line hose fixed to the vehicle body frame member, is brought into contact with the mounting surface and is coupled to the mount bracket and the line hose.

[Action]

Since the mounting surface to which the end of the suspension member is mounted is located below the vehicle body frame member and inward in the vehicle body width direction of the vehicle body frame member, the distance between the connecting portions at both ends of the suspension member is small. To become
Since the distance between the input point from the suspension arm and the connecting portion becomes small, the suspension member has a relatively large rigidity with respect to the input load from the suspension arm.

〔Example〕

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 4 show an embodiment of the present invention, and FIG. 1 is a sectional view taken along the line I--I of FIG. 2 showing a connection state at one end side of a suspension member. FIG. 2 is a schematic perspective view showing the same state, FIG. 3 is an exploded perspective view showing a state before coupling, FIG. 4 is a first equivalent sectional view showing a coupling state of the entire suspension member, and FIG. It is a sectional view corresponding to FIG. 1 showing another embodiment.

Here, in these embodiments, the rear suspension member coupling structure at the rear portion of the vehicle body is shown.

Then, as shown in FIGS. 1 and 4, the rear suspension member 1 is coupled to a vehicle body frame member such as the rear floor side member 2 via fastening members 8 such as bolts and nuts.

Incidentally, reference numeral 3 in the drawings of each of these drawings indicates a rear floor panel which is a body panel.

In such a rear suspension member coupling structure, the rear suspension member 1 is not directly coupled to the lower surface of the rear floor side member 2 as shown in FIGS. 1 to 4, but is mounted via the mount bracket 5 and the line hose 6. Are joined below the rear floor side member 2 and inside the vehicle width direction, that is, inside the vehicle body.

Specifically, on the inner side of the vehicle body of the rear floor side member 2, the vehicle interior vertical wall portion 21 of the rear floor side member 2 is provided.
And a rear floor panel 3, a mount bracket 5 is formed so as to form a closed cross section 4 adjacent to the closed cross section by the rear floor side member 2, and one end 51 of this mount bracket 5 is fixed to the rear floor panel 3. At the same time, the other end 52 is fixed to the vehicle exterior vertical wall portion 22 of the rear floor side member 2.

In addition, a substantially U-shaped line hose 6 is arranged in the closed cross section 4 thus formed by the mount bracket 5, and one end 61 of the line hose 6 is connected to the vehicle interior vertical wall portion 21 of the rear floor side member 2. The other end 62 is fixed to the vehicle inner vertical wall portion 54 of the mount bracket 5, and the bottom horizontal portion 63 of the line hose 6 and the bottom horizontal portion 53 of the mout bracket 5 are also fixed. The lower surface portion of the horizontal bottom surface portion 53, which is located below the rear floor side member 2 and on the inner side of the vehicle body, serves as a mounting surface for the suspension member 1.

Further, a nut 72, which is a fastening member 7, is welded to the bottom surface horizontal portion 63 of the line hose 6 which is disposed and coupled in the closed cross section 4.

Then, by tightening the bolt 71, which is the fastening member 7, from the ground side, one end of the rear suspension member 1 is located below the rear floor side member 2 and on the inner side of the vehicle body. And the line hose 6 are fastened and joined to the joining portions of the bottom horizontal portions 53 and 63.

As shown in FIG. 4, the rear suspension member 1
The other end of is similarly engaged.

Thus, the rear suspension member 1 is rigidly connected to the rear floor side member 2 below the rear floor side member 2 and on the inner side of the vehicle body, and the mount bracket 5 and the line hose having the closed cross section 4 are formed. By being connected to the rear suspension member 1, the distance between the connecting portions at both ends of the rear suspension member 1 can be reduced without being affected by the initially set connecting position of the rear floor side member 2.

Therefore, the rigidity of the rear suspension member 1 in the vertical direction of the vehicle body can be increased, and the resonance point in the vertical direction of the vehicle body can be increased, so that the vibration noise due to the resonance of the rear suspension member 1 is suppressed together with the improvement of the rigidity. can do.

In addition, since the distance between the connecting portions at both ends of the rear suspension member 1 can be made small in this way, the input point P from the suspension not shown (see FIG. 4).
Since it is possible to reduce the distance between each of the connecting portions and each of the connecting portions, the moment force applied to the connecting portion of the rear suspension member 1 can be reduced.

Furthermore, since the distance between the coupling portions at both ends of the rear suspension member 1 can be reduced, the length of the rear suspension member 1 in the vehicle body width direction can be shortened, and the rear suspension member 1 can be downsized. The weight of 1 can be reduced.

Here, in the combined state of the rear suspension members 1 as shown in FIG. 1, FIG. 2 and FIG. 4, the bottom horizontal portion 53 of the mount bracket 5 is arranged and connected to connect the rear suspension members 1. The vertical movement of the vehicle body is reliably suppressed by fixing one end 61 of the line hose 6 arranged in the closed cross section 4 by the mount bracket 5 to the vehicle interior vertical wall portion 21 of the rear floor side member 2. At the same time, the collapse of the cross section of the mount bracket 5 is caused by the vertical wall portion 54 on the vehicle inner side of the mount bracket 5 and the horizontal bottom portion 63 of the line hose 6.
This can be reliably prevented by the closed cross section 4 formed by the vehicle interior vertical wall portion 21 of the rear floor side member 2 and the rear floor panel 3.

Therefore, the joint rigidity of the respective members 2, 3, 5, 6 on the vehicle body side to which the rear suspension member 1 is coupled can be increased, and the fastening member 7 of the rear suspension member 1 can be increased.
Since it is possible to enhance the coupling rigidity due to the above, the functions such as enhancing the rigidity and resonance point of the rear suspension member 1 with respect to the input from the suspension and reducing the moment force applied to the coupling portion can be performed more reliably. be able to.

On the other hand, the connecting portions of the mount bracket 5, the line hose 6 and the rear floor side member 2 are fixed in the so-called shearing direction with respect to the input applied to the rear suspension member 1 from the suspension, so that the connecting portions of the wound can also be separated. The load in the vertical direction of the vehicle body, which is input from the suspension, is transmitted from the rear suspension member 1 through the mount bracket 5 and the line hose 6 to the highly rigid rear floor side member 2 which is a vehicle body frame member very efficiently. be able to.

That is, it is possible to improve the rigidity, the strength, the moment force, and the seismic intensity noise characteristics while reducing the weight of the rear suspension member 1 by reducing the size thereof. Further, the restriction on the positional relationship between the connecting position and the connecting portion of the rear suspension member 1 can be extremely reduced.

Next, in the structure of another embodiment of the present invention shown in FIG. 5, in addition to the connecting portion of the rear suspension member 1 shown in the embodiment shown in FIGS. 1, both ends of the rear suspension member 1 are extended to the outside of the vehicle, and the extended ends 11 are also connected to the lower surface of the rear floor side member 2 via mount brackets 5. Each end portion of the rear suspension member 1 is provided at two locations. It is connected to the car body side.

Incidentally, in the other embodiment shown in FIG. 5, the same reference numerals as those in the embodiments shown in FIGS. 1 to 4 described above indicate the same names (same parts).

Also, in the other embodiment shown in FIG. 5, the same effect as that of the embodiment shown in FIGS. 1 to 4 can be obtained.

However, in the other embodiment shown in FIG. 5, both ends of the rear suspension member 1 are extended (11) to a position where they overlap the lower surface of the rear floor side member 2, so that the rear suspension member 1 is downsized. Although it is not possible to reduce the weight, as shown in FIGS. 1 to 4, both ends of the rear suspension member 1 are 1 respectively.
Unlike the structure that is connected at two points, by connecting at two points, it is possible to achieve a moment arm structure for the distance between each of these connecting sites, and this structure further increases the moment force applied to the connecting sites. Since the size can be reduced, the above-described effects can be more reliably and sufficiently achieved.

The present invention is not limited to the above-mentioned embodiment, and can be applied to the front suspension member coupling structure at the front of the vehicle body, and may be a vehicle body skeleton member other than the floor side member 2. The shape and the joining method of 1 and each member 2, 3, 5, 6 on the vehicle body side can be appropriately changed as necessary, and include various embodiments within the scope of the utility model registration claim. Is.

[Advantages of the Invention] Since the mounting surface of the mount bracket is located below the vehicle body frame member and inward of the vehicle body frame member in the vehicle width direction, the distance between the connecting portions of the suspension members is reduced. be able to. Also, the distance between the input point of the load applied from the suspension arm to the suspension member and the connecting portion can be reduced. As a result, the moment acting on the connecting portion of the suspension member can be suppressed to a small value.

The decrease in the distance is synonymous with the increase in rigidity with respect to the same load applied from the suspension arm to the suspension member.
Since the suspension member is coupled to the mount bracket having the closed cross section and the line hose arranged in the closed cross section, the suspension member is eventually supported with great rigidity, and the occurrence of resonance phenomenon can be suppressed. .

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIGS. 1 to 4 show an embodiment of the present invention, and FIG. 1 shows one end portion side of a suspension member. 2 is a sectional view taken along the line I-I of FIG. 2 in a coupled state, FIG. 2 is a schematic perspective view of the same state, FIG. 3 is an exploded perspective view before coupling, and FIG. FIG. 5 is a cross-sectional view corresponding to FIG. 1, FIG. 5 is a cross-sectional view corresponding to FIG. 1 showing another embodiment of the present invention, and FIGS. 6 and 7 are cross-sectional views corresponding to FIG. It is a figure. 1 …… Rear suspension member (suspension member) 2 …… Rear floor side member (body frame member) 3 …… Rear floor panel (body panel) 4 …… Closed cross section 5 …… Mount bracket 6 …… Line hose 61 …… One end

Claims (1)

(57) [Scope of utility model registration request] 1. A structure for connecting each end of a suspension member supporting a suspension arm in the vehicle width direction to a vehicle body frame member extending in the vehicle front-rear direction on each side of the body panel in the vehicle width direction, wherein: A mount bracket that has a mounting surface that is below the vehicle body frame member and that is inward of the vehicle body frame member in the vehicle body width direction, and is formed into a closed cross section together with the body panel and the vehicle body frame member; A suspension member coupling, which is arranged in a cross section and is fixed to the vehicle body frame member, wherein the end portion of the suspension member is applied to the mounting surface and coupled to the mount bracket and the line hose. Construction.