JP3858544B2 - Anti-lock brake system actuator mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an actuator mounting structure for an antilock brake system that controls hydraulic pressure to a wheel cylinder of an automobile equipped with the antilock brake system.
[0002]
[Prior art]
In general, an anti-lock brake system (hereinafter abbreviated as ABS) may be mounted for the purpose of preventing the wheel from being locked during sudden braking and improving the stability of the vehicle body posture and the maneuverability. This ABS is an actuator of an anti-lock brake system that controls hydraulic pressure to each wheel cylinder (hereinafter abbreviated as an ABS actuator) in the middle of brake piping that mainly connects the master cylinder and the front and rear wheel cylinders. .) Is provided.
[0003]
When the ABS is mounted, the ABS actuator is often disposed in the engine room together with the master cylinder in order to shorten and simplify brake piping around the ABS actuator.
[0004]
This ABS actuator is usually attached to the vehicle body via a bracket, but since it generates vibration when the ABS is operated, it is almost always attached to a strong part such as a frame or a member.
[0005]
[Problems to be solved by the invention]
However, for the sake of layout, etc., in order to attach the ABS actuator bracket directly to the frame etc., it becomes a bracket with long legs, or a small mounting bracket is attached to the frame etc. by welding etc., and the ABS actuator bracket is attached there Many cases are attached.
In the case of such attachment, the rigidity becomes low and the sound and vibration at the time of ABS operation become large, and unpleasant sound and vibration are transmitted to the driver.
[0006]
An object of the present invention is to solve the above-mentioned problems, and to provide an actuator mounting structure for an anti-lock brake system that can ensure high rigidity and reduce ABS operating noise and vibration.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides an actuator mounting structure for an antilock brake system in which an actuator for an antilock brake system is attached to a vehicle body via a bracket. In other words, in the vicinity of the joint between the cross member and the side member of the vehicle body, the cross member and the side member are supported .
Also, the present invention provides the actuator bracket at the corner portion of the coupling portion between the dash cross member disposed in the vehicle width direction in the engine room and the apron side member disposed in the vehicle body longitudinal direction. Are attached so as to be supported by the dash cross member and the apron side member.
Further, the present invention provides a substrate portion having a bent portion obtained by bending the actuator bracket toward the lower side, and a leg body attached to the lower surface of the substrate portion and having a leg portion extending downward. A holding part attached to the upper surface of the board part and to which the actuator is attached; a notch groove having a lower opening is formed in a bent part of the board part and a lower end part of the leg part of the leg body; This is because the cross member and the apron side member of the vehicle body are fastened to the notch groove via the fastening member.
Furthermore, the present invention resides in that the length of the leg portion of the leg attached to the apron side member is longer than the length of the bent portion of the substrate portion.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 show the actuator mounting structure of the antilock brake system of the present invention, and FIGS. 5 to 7 show the structure of the actuator bracket.
[0009]
In FIG. 1 to FIG. 4, reference numeral 1 denotes an engine room provided in the front part of the vehicle body 2, and this engine room 1 connects the rear end parts of the front fender apron panel 3 provided on the left and right with a dash panel 4. It is separated from the passenger compartment. A wheel house 5 and a strut tower 6 swelled in the engine room 1 are formed on the inner surface side of the front fender apron panel 3. Apron side members 7 are arranged along the front-rear direction of the vehicle body 2 on the lower edge side of the left and right front fender apron panels 3. A dash cross member 8 is disposed on the lower edge side of the dash panel 4 along the vehicle width direction. The dash cross member 8 and the apron side member 7 are provided and joined in directions orthogonal to each other. The upper end surface of the apron side member 7 is disposed slightly below the upper end surface of the dash cross member 8. A cowl portion 9 is provided on the upper side of the dash panel 4.
[0010]
An actuator bracket 11 for attaching an anti-lock brake system actuator 10 (hereinafter abbreviated as ABS actuator 10) is attached to the corner C where the apron side member 7 and the dash cross member 8 are joined via the attachment portion 12. It has been.
The structure of the actuator bracket 11 will be described with reference to FIGS.
The actuator bracket 11 is mounted on the lower surface of the substrate portion 13 having a bent portion 13a bent downward, and extends downward in a direction orthogonal to the bent portion 13. The leg 14 having the above-described leg 14a and the holding part 15 attached to the upper surface of the substrate part 13 and to which the ABS actuator 10 is attached. The length of the leg portion 14 a of the leg body 14 constituting the attachment portion 12 of the actuator bracket 11 is formed longer than the length of the bent portion 13 a of the substrate portion 13 constituting the attachment portion 12.
[0011]
In order to increase the rigidity of the substrate portion 13, flanges 13c are formed on both sides from the upper surface portion 13b to the bent portion 13a, and an extended surface 13e formed with a taper 13d on one side is provided at the tip of the upper surface portion 13b. ing. On the lower surface of the extended surface 13e, a leg body 14 with a leg portion 14a hanging downward is welded in a direction orthogonal to the bent portion 13a. In order to increase rigidity, flange portions 14 c are formed on both sides of the leg body 14 from the upper joint surface 14 b to the leg portion 14 a in the same manner as the substrate portion 13.
Longitudinal ribs 16 and 17 are formed and reinforced on the bent portion 13a of the substrate portion 13 and the leg portion 14a of the leg body 14, respectively. The leg portion 14a of the leg body 14 is compared with the bent portion 13a. The width is narrow.
In addition, longitudinal cutout grooves 18 and 19 are formed in the lower end portions of the bent portion 13a of the substrate portion 13 and the leg portion 14a of the leg body 14, and the cutout grooves 18 and 19 are formed in the lower direction. The actuator bracket 11 is attached by engaging the bolts 20 and 21 with 19 and screwing the bolts 20 and 21 to the apron side member 7 and the dash cross member 8. A cutout groove 18 is formed in two places in the bent portion 13 a of the substrate section 13, and a cutout groove 19 is formed in one place in the leg section 14 a of the leg body 14.
[0012]
The holding part 15 is composed of a horizontal part 15a joined to the upper surface part 13b of the substrate part 13 and a vertical part 15b erected at right angles to the horizontal part 15a. A mounting hole 22 is formed on the plate surface of the vertical portion 15 b, and the ABS actuator 10 is fixed by a bolt 24 via a damper 23. A circular arc portion 25 is formed along the outline of the ABS actuator 10 at the upper edge of the vertical portion 15b. An attachment hole 26 is formed in the horizontal portion 15a of the holding portion 15 together with the upper surface portion 13b of the substrate portion 13 (see FIG. 5). The ABS actuator 10 is attached to the attachment hole 26 by a bolt 28 via a damper 27. It is fixed.
[0013]
Next, the operation of the actuator mounting structure of the antilock brake system of the present invention having the above configuration will be described.
The ABS actuator 10 is attached to the actuator bracket 11. In the ABS actuator 10, a damper 27 is engaged with the mounting hole 26, the upper end of the bolt 28 is engaged with the lower surface of the ABS actuator 10, and the bolt 28 is fixed through the hole 27 a of the damper 27 (see FIG. 7). ). Further, a damper 23 is engaged and disposed in the mounting hole 22 of the vertical portion 15b, and a bolt 24 is inserted into the hole 23a of the damper 23 to be screwed into a female screw portion (not shown) of the actuator bracket 11. Next, bolts 20 and 21 are attached in advance to the attachment portions of the apron side member 7 and the dash cross member 8, and the notch grooves 18 and 19 are engaged with the bolts 20 and 21 to temporarily fix the actuator bracket 11. To do. Then, the bolts 20 and 21 are tightened so that the bent portion 13a of the base plate portion 13 is brought into close contact with the side surface of the dash cross member 8, and the leg portion 14a of the leg body 14 is brought into close contact with the side surface of the apron side member 7 To fix.
[0014]
According to the above embodiment, since the actuator bracket 11 is fixed to the apron side member 7 and the dash cross member 8, high rigidity can be secured and fixed in the front-rear direction and the left-right direction of the vehicle body. The operating noise and vibration of the lock brake system can be reduced. When mounting the actuator bracket 11, the notch grooves 18 and 19 can be engaged with the bolts 20 and 21 to temporarily fix the actuator bracket 11, so that the assembling property is good. Since the leg part 14a of the leg body 14 is formed long, the contact area with the apron side member 7 can be increased, so that the coupling rigidity can be increased.
Since the ABS actuator 10 is attached to the actuator bracket 11 via the dampers 23 and 27, vibrations can be effectively absorbed.
[0015]
8 and 9 show the hydraulic system of the ABS actuator 10 and the brake booster 29 as viewed from the front of the vehicle body.
In the case of a right-hand drive vehicle, the brake booster 29 is disposed in the engine room 1 on the left side toward the rear of the vehicle body. In contrast, the ABS actuator 10 is disposed on the left side of the vehicle body. The ABS actuator 10 and the brake booster 29 are connected by pipes 30 and 31. From the ABS actuator 10, hydraulic pressure is supplied to each wheel cylinder through a pipe 32.
[0016]
In this way, by arranging the ABS actuator 10 and the brake booster 29 separately on the left and right sides of the engine room 1, the load can be distributed to both the left and right sides of the engine room 1. Since the ABS actuator 10 and the brake booster 29 are not concentrated on one side of the engine room 1, the layout in the engine room 1 can be given a degree of freedom.
[0017]
Note that the present invention is not limited to the above embodiment. For example, the actuator bracket 11 is attached to the dash cross member 8 and the apron side member 7, but other crosses arranged in the vehicle width direction. It is also possible to attach between the member and a side member disposed in the front-rear direction of the vehicle body. Moreover, although the bent part 13a of the board | substrate part 13 was attached to the dash cross member 8, and the leg part 14a of the leg 14 was attached to the apron side member 7, it is also possible to attach reversely.
Furthermore, the length and width of the leg portion 14a of the leg body 14 may be set as necessary.
[0018]
In addition, the depth and number of the notched grooves 18 and 19 formed in the bent portion 13a of the substrate portion 13 of the actuator bracket 11 and the leg portion 14a of the leg body 14 can be set as necessary. In addition, it goes without saying that the present invention can be implemented with appropriate modifications within a range not changing the gist of the present invention.
[0019]
【The invention's effect】
As described above, according to the actuator mounting structure of the antilock brake system of the present invention, the following effects can be obtained.
2. The actuator mounting structure for an antilock brake system according to claim 1, wherein the actuator for the antilock brake system is attached to the vehicle body via a bracket. Since it is arranged near the joint of the side member so as to be supported by the cross member and the side member, it can be secured with high rigidity in the longitudinal direction and the lateral direction of the vehicle body. System noise and vibration can be reduced.
3. The actuator bracket according to claim 2, wherein the actuator bracket is attached to a corner portion of a joint portion between the dash cross member disposed in the vehicle width direction in the engine room and the apron side member disposed in the longitudinal direction of the vehicle body. The anti-lock brakes can be secured with high rigidity in the longitudinal and lateral directions of the vehicle body in the engine room because the parts are arranged to be supported by the dash cross member and apron side member. System noise and vibration can be reduced.
4. The substrate part according to claim 3, wherein the actuator bracket has a bent part that is bent downward, a leg that is attached to the lower surface of the board part and extends downward, and the board. A holding portion to which the actuator is attached, and a notch groove having a downward opening is formed in a bent portion of the substrate portion and a lower end portion of the leg portion of the leg body. Since the cross member and the apron side member of the vehicle body are fastened to the groove via the fastening member, the notch groove can be engaged with the fastening member to temporarily fix the actuator bracket, so that the assembling property is good.
In claim 4, since the length of the leg portion of the leg attached to the apron side member is longer than the length of the bent portion of the substrate portion, the contact area with the apron side member can be increased, so Stiffness can be increased.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an actuator mounting structure of an antilock brake system according to the present invention.
FIG. 2 is a front view of FIG. 1;
3 is a plan view of FIG. 1. FIG.
FIG. 4 is a partially enlarged view of FIG. 1;
5 is a plan view showing an actuator bracket with the actuator of FIG. 3 removed. FIG.
FIG. 6 is an enlarged perspective view showing an actuator bracket.
FIG. 7 is a perspective view showing the actuator bracket with the actuator removed.
FIG. 8 is a perspective view showing a piping system of a brake booster and an actuator.
9 is a front view of FIG. 8. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Engine compartment 2 Car body 3 Front fender apron panel 4 Dash panel 7 Apron side member 8 Dash cross member 10 ABS actuator 11 Actuator bracket 12 Mounting part 13 Base part 14 Leg 15 Holding part 16, 17 Rib 18, 19 Notch groove 20 , 21 Bolts 22, 26 Mounting holes 23, 27 Dampers 24, 28 Bolts 13a Bending parts 14a Legs

Claims (4)

In the anti-lock brake system actuator mounting structure in which the anti-lock brake system actuator is mounted to the vehicle body via the bracket, the actuator bracket for mounting the anti-lock brake system actuator is connected to the cross member and the side member of the vehicle body. An actuator mounting structure for an anti-lock brake system, wherein the actuator mounting structure is disposed in the vicinity so as to be supported by a cross member and a side member.  The actuator bracket is mounted at the corner of the connecting portion between the dash cross member disposed in the vehicle width direction in the engine room and the apron side member disposed in the longitudinal direction of the vehicle body. 2. The anti-lock brake system actuator mounting structure according to claim 1, wherein the actuator mounting structure is disposed so as to be supported by the member and the apron side member.  A board portion having a bent portion where the actuator bracket is bent downward, a leg having a leg portion attached to the lower surface of the substrate portion and extending downward, and an upper surface of the substrate portion. And a holding part to which the actuator is attached, and a notch groove having a downward opening is formed in a bent part of the substrate part and a lower end part of the leg part of the leg body, and a fastening member is formed in the notch groove The anti-lock brake system actuator mounting structure according to claim 2, wherein the actuator is fastened to a cross member and an apron side member of the vehicle body via a joint.  4. The actuator mounting structure for an antilock brake system according to claim 3, wherein a length of a leg portion attached to the apron side member is longer than a length of the bent portion of the base plate portion.

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