JPS6114937Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a device for attaching a gearbox containing a steering rack to the front side of a dash panel.

A type of steering device that transmits the rotational motion of the steering wheel to the wheels by meshing a pinion on the steering shaft side with a rack on the tie rod side, and steers the wheels in the desired direction of travel. Are known. The rack used in this rack and pinion type steering device is housed in a cylindrical gearbox that is long in the vehicle width direction. Conventionally, this gearbox has been attached to the front of a dash panel that separates the engine room from the passenger compartment. For example, the first
As shown in the figure, some darts panels 1 have reinforcing plates 2 welded to the front surface thereof to strengthen the rigidity of the darts panel 1 and to enhance its vibration-proofing and sound-proofing effects. This reinforcing plate 2 has, at its lower part, a dart cross member part 3 that is long in the vehicle width direction (perpendicular to the plane of the drawing) and forms a closed cross section together with the dash panel 1, and at its upper part, the front surface of the dash panel 1 forms a gap t. A panel portion 4 is formed which is covered through the wafer. A gear box G of a steering device is disposed on a front wall 301 of the dash cross member portion 3, and is fixed to the front wall 301 via a pair of steering rack mounting brackets 5. Furthermore, the low wall 30 of the dart cross member portion 3
2 is connected to a suspension device (not shown) and various connecting members on the engine side. In this way, the front wall 301 and the low wall 3 are attached to the dart cross member portion 3.
02, a load W is applied, and in particular, the load W that displaces the front wall 301 in the vertical direction (in the direction of the arrow) B causes the dart cross member portion 3 to be torsionally deformed (indicated by a dashed line in Fig. 1). easy. in this way,
If the dart cross member 3 is prone to deformation,
The gearbox G attached to the front surface 301 is misaligned, reducing the mounting accuracy of the steering device and causing inconvenience in its proper operation.

The object of this invention is to provide a steering rack mounting device with guaranteed rigidity.

The steering rack mounting device according to this invention includes a reinforcing plate welded to the front surface of the dash panel, and a rack mounting bracket disposed in front of the reinforcing plate and supporting the gearbox in which the steering rack is housed. The reinforcing plate is long in the vehicle width direction and consists of a darts cross member part that forms a closed cross section with the darts panel, and a panel part that extends from the upper edge of the darts cross member part and covers the dash panel with a gap therebetween. The rack mounting bracket is configured to be welded from the dart cross member section to the panel section.

Therefore, the steering rack mounting device has the following effects.

When a load is applied to the dart cross member, the front wall, which is the part that undergoes the largest displacement, can transmit the displacement to the upper panel section via the rack mounting bracket. That is, the rigidity of the dash cross member can be strengthened by the rack mounting bracket and the panel, and torsional deformation of the dash cross member can be prevented, thereby ensuring mounting accuracy of the steering rack.

This invention will be explained below with reference to the accompanying drawings.

FIG. 2 shows a steering rack mounting device 6 as an embodiment of this invention. Dashboard panel 7 to which this steering rack mounting device 6 is attached
is a part of the underbody of an automobile (not shown), which separates the engine room 8 side and the passenger compartment 9 side (see Fig. 3), the upper edge is connected to the cowl top inner panel 10, the lower edge is curved, floor panel 1
1. A reinforcing plate 12 is welded to the front surface of the dash panel 7 so as to cover it. This reinforcing plate 12 is long in the vehicle width direction A, and includes a darts cross member portion 13 that forms a closed cross section a (see FIG. 3) together with the dash panel 7, and an upper edge of this darts cross member portion 13 that is long in the vehicle width direction. It is formed of a boundary part 14 that is formed long in direction A, and a panel part 15 that extends upward from this boundary part 14 and covers the front surface of the dash panel 7 with a gap t interposed therebetween. Note that the gap t is filled with a deadening sheet S that improves the soundproofing and vibrationproofing effects of the dash panel 7. A cylindrical gearbox 18 that is long in the vehicle width direction A and houses a rack 17 (see FIG. 4) of the steering device 16 is disposed on the front surface of the reinforcing plate 12, and this gearbox 18 has a pair of vertically long gearboxes 18. It is supported on the reinforcing plate 12 side via a rack mounting bracket 19. That is, the gearbox 18 accommodates a pinion that rotates in conjunction with the rotational operation of a steering wheel (not shown) and a rack 17 that meshes with the pinion.A tie rod (not shown) is connected to both ends of the rack 17, and the tie rod is connected to the axle side. Steer and operate. A rack mounting bracket 19 connects this gearbox 18 to the reinforcing plate 12 side at two locations.
As shown in FIG. 4, this is made into a shape that ensures rigidity by press-molding a substantially rectangular rigid plate so that its central portion bulges out. This rack mounting bracket 19 has a longitudinally long bulge 1.
A groove 192 for receiving the outer wall of the gearbox 18 is formed in the center of the gear box 91, and screw holes 193 are formed at the upper and lower positions of the groove 192, respectively. Additionally, a strip 194 having a uniform width is formed around the periphery of the rack mounting bracket 19. The lower part of this piece 194 is superimposed on the front wall 131 of the dart cross member part 13, and the upper part is overlapped with the panel part 1.
5 and welded together. A gearbox 18 is fitted into each groove 192 of each rack mounting bracket 19, and the gearbox 18 is fixed using a U-shaped band 21. In this case, each u
The upper and lower ends of the shape band 21 are tightened and fixed by bolts 22 which are threaded into threaded holes 193 on the rack mounting bracket.

Note that the low wall 13 of the needle cross member portion 13
2 is connected to a suspension device and a connecting member on the engine side (not shown).

Steering rack mounting device 6 shown in Fig. 2
uses a reinforcing plate 12 that distributes and transmits the load W applied by a suspension device (not shown) to the lower wall 132 of the dash cross member to the dash panel 7 side, and a pair of rack mounting brackets 19. A gearbox 18 is connected to the dash panel 7 side. Therefore, when various loads W are applied to the dart cross member section 13 on the reinforcing plate, this load is transferred to the upper panel section 1 through the rack mounting bracket 19 having high rigidity.
5 can be conveyed. That is, the rigidity of the dart cross member portion 13 is reinforced, and the inconvenience that a portion of its front wall 131 is displaced in the vertical direction B and torsionally deformed with other portions is prevented, and the gearbox 18 is Support the Rack 17 in the proper position.
can ensure proper operation.

Steering rack mounting device 6 shown in Fig. 2
The rack mounting bracket 19 used for the
Although it was welded over several parts, it was separated from the boundary part 14, which is the upper edge of the dart cross member part located in the middle. Therefore, instead of the rack mounting bracket 19, a rack mounting bracket 23 formed such that the piece 22 overlaps the boundary part 14 may be used, as shown in FIG. In this case, the rack mounting bracket 23 is more reliably connected to both the dash cross member portion 13 and the panel portion 15, and the rigidity of the dart cross member portion 13 can be further increased. Furthermore, although the steering rack mounting device 6 shown in FIG. It is also possible to further strengthen the

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional steering rack mounting device, Fig. 2 is a front view of essential parts of a steering rack mounting device as an embodiment of this invention, and Fig. 3 is a side sectional view of a conventional steering rack mounting device.
The figure is a sectional view taken along line X-X in Figure 2, Figure 4 is a perspective view of the rack mounting bracket shown in Figure 2, and Figure 5 is a perspective view of the rack mounting bracket shown in Figure 2.
The figure is a side view of a rack mounting bracket used in a steering rack mounting device as another embodiment of the invention. 6...Steering rack mounting device, 7...Dutch panel, 12...Reinforcement plate, 13...Dutch cross member portion, 14...Boundary portion, 15...Panel portion, 17...Rack, 18...Gearbox, 19...Rack mounting bracket, A...Vehicle width direction, t...Gap.

Claims (1)

[Scope of utility model registration request] A reinforcing plate welded to the front of the darts panel,
A rack mounting bracket is disposed in front of the reinforcing plate and supports a gear box in which a steering rack is housed. The rack mounting bracket is formed of a member portion and a panel portion extending from the upper edge side of the darth cross member portion and covering the dash panel with a gap, and the rack mounting bracket is welded from the darth cross member portion to the panel portion. A steering rack mounting device with a configuration of