JPH0750243Y2 - Vehicle body lateral shake prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a roll prevention device for a vehicle body of an automobile having an axle housing.

(Prior Art) Conventionally, as a roll preventing device of a vehicle body, particularly a front portion of the vehicle body in an automobile having an axle housing, those shown in FIGS. 5 and 6 are known.

In the vehicle body lateral shake preventing device according to this figure, a cross member 2 is fixed to a portion of the side member 1 extending in the front-rear direction of the vehicle body on the front side of the vehicle body. Member 3 forming a part of a lateral shake preventing device for a vehicle axle housing (not shown)
Is provided. One end of the rod member 3 is pivotally attached to the axle housing. A bracket 4, which is another element of the lateral shake preventing device, is fixed near the fixing portion between the side member 1 and the cross member 2, and the rod member 3 is fixed.
The other end of the bracket is pivotally attached to the bracket 4.

The bracket 4 is formed in a tubular shape by joining a pair of bracket piece portions 4a and 4b having a U-shaped cross section, and an upper end portion 4c of the bracket 4 is welded to a lower end surface 1a of the side member 1. Between the bracket pieces 4a and 4b, one end of a rigid upstay 5 that constitutes a part of the lateral shake preventing device is fixed, and the other end of the rigid upstay 5 is fixed to the cross member 2. By this, even when the front part of the vehicle body and the axle housing for the front wheels are about to be displaced in opposite vehicle width directions, it is possible to prevent lateral shake of the vehicle body. It is shown in the Toyota Land Cruiser new model car manual issued in October.)

(Problems to be Solved by the Invention) However, in such a conventional lateral shake preventing device for the vehicle body front, the rigidity upstay 5 is provided at the fixing portion between the side member 1 and the cross member 2. However, there were problems such as hindering the reduction of vehicle weight and being restricted in the layout design near the front wheels. If the rigidity upstay 5 is not provided in order to reduce the vehicle weight, the rigidity of the bracket 4 cannot be sufficiently ensured, and running stability may be deteriorated.

(Purpose of Invention) The present invention was made by focusing on the above problems,
The purpose is to improve the rigidity of the bracket and the side member, reduce the weight of the front part of the vehicle body without restricting the layout setting of the front part of the vehicle body, and improve the running stability. An object is to provide a lateral shake preventing device.

(Means for Solving Problems) In order to achieve the above object, a lateral shake preventing device of a vehicle body front portion according to the present invention extends downward in a front portion of a side member that extends in the vehicle body front-rear direction and supports a floor. Of the rod body extending in the vehicle width direction is connected to the lower portion of the bracket, and the other end of the rod member is connected to the axle housing for the front wheels extending in the vehicle width direction. In the shake prevention device, an upper portion of the bracket is a sandwiching plate portion joined to one of the left and right side wall portions of the side member, and a lower portion of the sandwiching plate portion is a U-shape protruding below the side member. Of the pair of bracket pieces, and the U-shaped cross-sections of the pair of bracket pieces are joined to each other in a closed cross-section. The left and right side wall portions of the site Tearingugia is mounted, clamping wear plate portion of the pair of bracket pieces are bonded, respectively,
One end of the rod member is connected to the lower end of the U-shaped cross section joined to the closed cross section, and a tubular collar is provided inside the side member to which the pair of sandwiching pieces are joined. It is characterized in that the fixing plate portion of the steering gear and the pair of bracket piece portions are inserted and bolted together so as to pass through the collar.

(Operation) According to the vehicle body lateral shake preventing device of the present invention, the bracket is composed of a pair of bracket pieces, and each of the pair of bracket pieces has a sandwich plate and a U-shaped cross section. When joining the pair of bracket pieces to the side member, the U-shaped cross-sections are joined to each other in a closed cross-section, and the sandwiching plates of the bracket pieces are joined to the left and right side wall portions of the side member, respectively. Compared to the conventional joining method in which the lower surface of the side member is projected, the strength against rolling load is improved.

In particular, each of the sandwiching plate portions of the pair of bracket pieces is joined to the left and right side wall portions of the side member, and moreover, the collar is disposed inside the side member, and the fixing plate portion of the steering gear together with the sandwiching plate portion. Since the bolts are tightened together and the bolts are inserted inside the collar, the load applied to the lower end of the bracket is applied in the direction in which the side members are twisted even if a rolling load from the rod member in the vehicle width direction is applied. Since it is distributed over the entire side member, the rigidity around the bracket is significantly improved, which in turn reduces the weight.

Further, since the rigidity near the steering gear is remarkably improved, even if a strong force acts on the bracket, the side member, etc. due to stationary steering, etc., the durability against these damages is remarkably improved. Moreover, since the rigidity upstay as in the conventional case is not necessary, the restriction on the layout of the vehicle body is reduced and the weight of the vehicle body can be reduced.

(Embodiment) An embodiment of a lateral shake preventing device for a vehicle body front portion according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a cross-sectional structure of a lateral shake preventing device according to this embodiment. In this embodiment, the side member 10 has a tubular cross section, and the steering gear 11 of the side member 10 is
The fixing portion 10a for fixing the has increased rigidity. An insertion hole for inserting the bolt 12 is opened in the vertical plate portion of the fixed portion 10a. Bolts 12 are placed in the closed section of the fixed part 10a.
A reinforcing collar 13 is inserted to insert through. The reinforcing collar 13 is welded before the side member 10 is welded to the closed cross-sectional shape, and is welded when the side member 10 still has a U-shaped cross-sectional shape.

The lower part of the bracket 14 is, as shown in FIGS. 2 to 4,
It is formed by a pair of bracket piece portions 14a, 14b having a U-shaped cross section, and the pair of bracket piece portions 14a, 14b are welded to each other so as to form a cylindrical closed cross section. The side member 10 is attached to the upper part of the pair of bracket pieces 14a and 14b from the vehicle width direction.
Sandwiching plate portions 15a and 15b sandwiching the fixed portion 10a are formed.

The sandwiching plate portion 1 of the bracket piece portion 14a arranged inside the vehicle body
5a is formed smaller than the sandwiching plate portion 15b of the bracket piece portion 14b arranged outside the vehicle body. A sandwiching plate portion 15b arranged outside the vehicle body is arranged between the steering gear 11 and the side member 10, and an inserting hole 12a through which the bolt 12 is inserted is opened in the sandwiching plate portion 15b. The bolt 12 penetrates the mounting hole 11a of the steering gear 11, the sandwiching plate portion 15a, the fixing portion 10a, and the collar 13, and is fastened by a nut 12b. The lower end of the bracket piece 14b has a pivot hole 14c.
Is opened, and one end portion 16a of a rod member 16 which constitutes a part of a lateral shake preventing device of a front wheel axle housing (not shown) is pivotally attached to the pivotal hole 14c. The other end of the rod member 16 is pivotally attached to the front wheel axle housing.

In the lateral shake preventing device for the vehicle body front portion according to the present embodiment, the bracket 14 sandwiches the side member 10 from the vehicle width direction, and the pair of bracket piece portions 14a and 14b of the bracket 14 are
Since they are welded to each other to form a tubular closed cross section, the rigidity of the mounting bracket 14 is increased, and the force of the body displacing in the vehicle width direction is transmitted to the front wheel axle housing via the rod member 16. Even in this case, the force transmitted through the rod member 16 can be supported by the tubular bracket 14. The sandwiching plates 15a and 15b of the bracket 14 are side members.
Since 10 is sandwiched from the vehicle width direction, the bracket 14 is fixed together with the steering gear 11, and the reinforcing collar 13 is installed inside the fixed portion 10a of the side member 10,
The rigidity of these parts becomes extremely high. by this,
Lateral runout of the front part of the vehicle body is prevented more reliably than in the past, steering stability is improved, and even when a strong force is input to the fixing portion 10a of the bracket 14 and the side member 10 due to stationary steering, etc. Less likely to be damaged. Moreover, unlike the conventional case, the rigidity upstay is not required, so that the layout restriction of the front part of the vehicle body is reduced and
It can contribute to the reduction of the body weight.

(Advantages of the Invention) Since the vehicle body lateral shake preventing device according to the present invention is configured as described above, the bracket is composed of a pair of bracket pieces, and each of the pair of bracket pieces is a sandwich plate. When joining a pair of bracket pieces to a side member, the U-shaped cross sections are joined to each other in a closed cross-section shape, and the bracket pieces are attached to the left and right side wall portions of the side member. Since the sandwiching plates are joined together, compared to the conventional joining method that projects on the lower surface of the side member,
The strength against rolling load is improved.

In particular, each of the sandwiching plate portions of the pair of bracket pieces is joined to the left and right side wall portions of the side member, and moreover, the collar is disposed inside the side member, and the fixing plate portion of the steering gear together with the sandwiching plate portion. Since the bolts are tightened together and the bolts are inserted inside the collar, the load applied to the lower end of the bracket is applied in the direction in which the side members are twisted even if a rolling load from the rod member in the vehicle width direction is applied. Since it is distributed over the entire side member, the rigidity around the bracket is significantly improved, which in turn reduces the weight.

Further, since the rigidity near the steering gear is remarkably improved, even if a strong force acts on the bracket, the side member, etc. due to stationary steering, etc., the durability against these damages is remarkably improved. Moreover, since the rigidity upstay as in the conventional case is not necessary, the restriction on the layout of the vehicle body is reduced and the weight of the vehicle body can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a lateral vibration preventing structure of a vehicle body front portion according to an embodiment of the present invention, FIG. 2 is a perspective view showing a mounting state of a bracket according to the embodiment of FIG. 1, and FIG. 1 is a perspective view of a bracket piece portion on the outside of the vehicle body, FIG. 4 is a perspective view of the bracket piece portion inside the vehicle body of FIG. 1, and FIG. 5 is a partial perspective view of a conventional lateral shake preventing structure of a vehicle body front portion. FIG. 6 is a cross-sectional view of a conventional lateral shake preventing device for a vehicle body front portion. 10 …… Side member 10a …… Fixed part 11 …… Steering gear 13 …… Reinforcing collar 14 …… Brackets 14a, 14b …… A pair of bracket pieces 15a, 15b …… Clamping plate 16 …… Rod member

Claims (1)

[Scope of utility model registration request] 1. A bracket that extends downward in the front-rear direction of a vehicle body and supports a floor is provided at a front portion of the side member. One end of a rod member extending in the vehicle width direction is connected to a lower portion of the bracket. In a lateral shake preventing device for a vehicle body, the other end portion of which is connected to an axle housing for a front wheel extending in the vehicle width direction. The bracket has a top portion joined to either of the left and right side wall portions of the side member. The pair of bracket pieces are formed into a plate portion, and the lower portion of the sandwiching plate portion is a U-shaped cross-section portion projecting downward of the side member. The cross-sections are joined to each other in a closed cross-section shape, and the pair of bracket piece sandwiching plates are provided on both left and right side wall portions of the side member where the steering gear is attached. There are bonded respectively,
One end of the rod member is connected to the lower end of the U-shaped cross section joined to the closed cross section, and a tubular collar is provided inside the side member to which the pair of sandwiching pieces are joined. A lateral shake preventing device for a vehicle body, characterized in that the fixing plate portion of the steering gear and the pair of bracket piece portions are inserted and bolted together so as to pass through the collar.