JPH10250549A - Actuator installing structure of antilock brake system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an actuator installing structure of an antilock brake system which can reduce a operation noise in a simple structure and at a low cost, and can avoid a damage to a shock, as well as can secure a piping space of a brake piping. SOLUTION: This actuator installing structure is composed by supporting elastically an actuator 11 of an antilock brake system by a bracket 25 through a vibration-proof rubber 22, and installing the bracket 25 on a car body. In this case, the actuator 11 is provided at the rear side of a suspension tower 2a, and near a brake booster, inside an engine room 1, the bracket 25 is composed of a pair of fixing parts 26a and 27a connected to the above car body; extensions 26b and 27b extending to separate from the car body installing part, following to the fixing parts 26a and 27a; and loading parts 26c and 27c formed by bending at the extending ends, and combined each other; and the above actuator 11 is loaded on the loading part 27c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator mounting structure for mounting an anti-lock brake system (hereinafter referred to as an ABS system) on an automobile.

[0002]

2. Description of the Related Art Generally, in automobiles, ABS is used for the purpose of improving the stability of the vehicle body posture and the controllability during sudden braking.
The system may be installed. This ABS system has a configuration in which an actuator for controlling the oil pressure to each wheel cylinder is interposed mainly in the middle of a brake pipe connecting the master cylinder to each of the front and rear wheel cylinders.

When the above-mentioned ABS system is mounted, it is preferable that the ABS system is disposed in the engine room in order to shorten and simplify the brake piping around the actuator. in this case,
Conventionally, in order to suppress the operation sound (vibration) of the actuator, it is general that the actuator is elastically supported by a bracket via a vibration isolating rubber, and the bracket is mounted on a vehicle body frame (for example, see Japanese Utility Model Application Laid-Open No. HEI 3-103). 100563, JP-A-3-13264).

However, depending on the mounting structure of the bracket on the vehicle body, harsh operating noise of the actuator may be transmitted from the vehicle body to the dash panel, which may cause discomfort to the occupant. In order to reduce such an operation noise, as shown in FIG.
It is conceivable to elastically support the actuator 52 via the 51 and to elastically support the bracket 50 on the vehicle body frame 54 via the second vibration isolating rubbers 53. By adopting this double anti-vibration structure, silence can be improved.

[0005]

However, in the case of the above-mentioned double vibration isolating structure, although the effect of reducing the operation noise can be obtained, the mounting structure becomes complicated because a large number of vibration isolating rubbers are required. However, there is a problem that the cost increases. In general, the vibration-isolating rubber 53 has a structure in which a spacer 56 is inserted into a shaft of a rubber member 55 and the rubber member 55 and the spacer 56 are fastened by a bolt 58 via a washer 57, as shown in FIG. As a result, the component cost increases.

Further, depending on the arrangement structure of the actuator, it is difficult to secure a space for arranging a brake pipe around the actuator, and there is a possibility that the actuator may be damaged when an impact is applied from the front of the vehicle body.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a simple structure and can reduce operating noise at low cost, and can secure a wiring space for brake pipes and can prevent damage due to impact. It is an object of the present invention to provide an actuator mounting structure for a lock brake system.

[0008]

SUMMARY OF THE INVENTION The present invention relates to an actuator mounting structure for an anti-lock brake system in which an actuator of the anti-lock brake system is elastically supported by a bracket via an anti-vibration rubber, and the bracket is mounted on a vehicle body. Disposing the actuator behind the suspension tower in the engine compartment and near the brake booster, and moving the bracket away from the pair of fixing portions coupled to the vehicle body and the vehicle body mounting portion following each of the fixing portions. , And a mounting portion which is installed between the distal ends of the respective extending portions and on which the actuator is mounted.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 4 are views for explaining an actuator mounting structure of an ABS system according to an embodiment of the present invention, and FIGS. 1 to 4 are rear views and side views showing an arrangement state of a mounting bracket of an actuator, respectively. , Plan view, schematic perspective view.

In FIG. 1, reference numeral 1 denotes an engine room provided at a front portion of a vehicle body, which has a schematic structure in which a dash panel 3 extending in a vehicle width direction is joined to a rear end of a front fender apron 2 extending in the vehicle front-rear direction. In the engine room 1
A hood 5 is provided in the upper opening so as to be openable and closable.

A wheel house 2b is formed on the front fender apron 2 so as to protrude inward, and a suspension tower 2a is formed on the wheel house 2b so as to protrude upward. A side member 4 extending in the front-rear direction of the vehicle body is joined to a lower edge portion of the fender apron 2, and an engine unit (not shown) is mounted on the side member 4.

A brake booster 6 is mounted on the dash panel 3 on the engine room 1 side, and the brake booster 6 is disposed behind the suspension tower 2a. A master cylinder 7 is connected to the brake booster 6 so as to protrude forward, and a reservoir tank 8 is connected to the master cylinder 7.

An ABS system 1 is provided in the engine room 1.
0 is mounted. The ABS system 10 prevents the wheels from being locked when the vehicle is suddenly braked, thereby improving the stability of the vehicle body posture and improving the maneuverability. An actuator 11 having a built-in solenoid valve for controlling the hydraulic pressure to the wheel cylinder is provided, and the actuator 11 is controlled by a controller (not shown) based on the rotation speed of each wheel and the like.

Five brake pipes 12 are connected to the upper wall of the actuator 11. Each brake pipe 12 extends downward from the upper wall behind the actuator 11, and is connected to a wheel cylinder of each wheel via a hydraulic distribution valve 13. Note that 14,
Reference numeral 15 denotes a valve coupler and a motor coupler, respectively.

The actuator 11 is disposed behind the suspension tower 2a and in front of the brake booster 6, and is located slightly above the upper surface of the suspension tower 2a. The hydraulic pressure distribution valve 13 is fixed to the lower portion of the suspension tower 2a located below the actuator 11 by bolting.

The actuator 11 is elastically supported by a support member 20. The support member 20 is made of a sheet metal bent and formed in a substantially U-shape.
The lower end of the actuator 11 is fastened and supported by bolts 23, 23 with one and a pair of rear vibration isolating rubbers 22 interposed therebetween.

The actuator 11 is mounted on the vehicle body by a bracket 25 which is a feature of this embodiment. The left and right legs 26 and 27 are made of sheet metal.
When viewed from the rear of the vehicle body (see FIG. 1), the left and right legs 26 and 27 are fixed to the fixed portions 26a and 27a. Following the fixing portions 26a, 27a, extending portions 26b, 27b extending substantially parallel upward away from the vehicle body attaching portion, and mounting portions 26c, 27c formed by bending the upper ends of the extending portions 26b, 27b inward. And the mounting portions 26c and 27c are joined by spot welding. 29 is a reinforcing rib, and the bracket 25 may be formed integrally.

The extension 26b of the bracket 25,
Each of the brake pipes 12 is routed so as to pass through a portal space formed by 27b and the mounting portions 26c, 27c, and a part of the pipes 12 is supported by a clamp 30 attached to a bracket 25. ing. Reference numeral 31 denotes a clamp for supporting the clutch cable 32.
The lower end of 2 is bolted and fixed to the support member 20.

The left fixing portion 26a is formed to be substantially vertical, and is fastened and fixed to the side wall of the side member 4 by two bolts 33,33. The left extension 26b extends slightly vertically inward from the fixed portion 26a, and then extends substantially vertically upward.

The right fixing portion 27a is formed to be substantially horizontal, and is fastened and fixed to the rear of the suspension tower 2a of the fender apron 2 by a bolt 33. The right fixing portion 27a is formed with a claw portion 27d for temporarily holding at the time of assembling. The right extension 27b extends substantially horizontally inward following the fixing portion 27a and is bent to be substantially parallel to the left extension 26b.

The mounting portions 26c and 27c are formed so as to be substantially horizontal and away from the vehicle body. The support member 20 of the actuator 11 is connected to the upper surface of the mounting portion 27c by welding. ing. As a result, the actuator 11 is fixed to each of the fixing portions 26a,
The bracket 25 is arranged at a position away from the upper side 27a, and the bracket 25 has a gate shape slightly inclined inward in the vehicle width direction, so that the rigidity against vibration in the vehicle width direction is low.

Next, the operation and effect of this embodiment will be described. According to the present embodiment, the bracket 25 is connected to the left and right fixing portions 26a and 27a,
b, 27b, and a mounting portion 26c, 27c provided between the upper ends of the extension portions 26b, 27b.
Since the supporting member 20 for elastically supporting the actuator 11 is joined to the mounting portion 27c, the operation sound and vibration of the actuator 11 can be absorbed by the minute swing of the extension portions 26b and 27b in the vehicle width direction. Thus, harsh operating noise transmitted to the dash panel 3 can be suppressed. This eliminates the need for the anti-vibration rubber between the bracket and the vehicle body frame, simplifies the mounting structure, and reduces component costs.

In this embodiment, the actuator 11
Is disposed behind the suspension tower 2a and in front of the brake booster 6, so that the actuator 11 can be disposed by effectively utilizing the empty space in the narrow engine room 1, and the length of the brake pipe from the master cylinder 7 can be arranged. Can be shortened, and the structure can be simplified from this point as well. Also, since the actuator 11 is disposed above the upper surface of the suspension tower 2a, the actuator 1
1 while securing the arrangement space of the extension portions 26b, 2
7b can be secured in the vertical direction.

Further, since the actuator 11 is disposed behind the high rigidity suspension tower 2a, the actuator 11 can be protected by the high rigidity suspension tower 2a when an impact force acts from the front of the vehicle body. Damage can be avoided.

In this embodiment, the bracket 25
Since the space is formed by the extension portions 26b and 27b and the mounting portions 26c and 27c, the space can be effectively used to route the brake pipe 12 or the harness, and the number of required clamps can be reduced. 11 can be made compact.

In the above embodiment, each extension 26
Although the case where b and 27b are extended upward from the fixed portions 26a and 27a has been described, the present invention is not limited to this, and may be extended in any direction of the vehicle longitudinal direction or the vehicle width direction. In this case, the same effect as in the above embodiment can be obtained.

In the above-described embodiment, the actuator 11 is elastically supported by the bracket 25 via the support member 20. However, the actuator 11 may be elastically supported directly on the mounting portion 27c of the bracket 25.

[0028]

As described above, according to the actuator mounting structure of the anti-lock brake system according to the present invention, the actuator is arranged near the brake booster behind the suspension tower in the engine room, so that the empty space can be effectively used. Actuator
In addition to the effect of simplifying the wiring structure of the brake pipe, there is an effect that the suspension tower functions as a protective member against an impact force from the front of the vehicle body and damage to the actuator can be avoided.

[0029] Further, an extension part extending away from the vehicle body attaching part following a pair of fixing parts coupled to the vehicle body attaching part, and an actuator mounting part erected on the extended end, comprising a bracket for elastically supporting the actuator. Since it is formed in the shape of a gate, it is possible to absorb the operating noise and vibration of the actuator by the minute swing of the extension, which has the effect of suppressing harsh operating noise transmitted to the vehicle interior, and also has the effect of suppressing the bracket and the vehicle body. This eliminates the need for a vibration-isolating rubber, thereby simplifying the mounting structure and reducing the cost of parts.

[Brief description of the drawings]

FIG. 1 is a rear view showing an actuator mounting state for explaining an actuator mounting structure of an antilock brake system according to an embodiment of the present invention.

FIG. 2 is a side view showing the mounted state of the actuator.

FIG. 3 is a plan view showing the mounting state of the actuator.

FIG. 4 is a schematic perspective view of a vehicle body compartment in which the bracket is provided.

FIG. 5 is a rear view of the actuator mounting bracket showing a process of establishing the present invention.

FIG. 6 is a cross-sectional view of a general anti-vibration rubber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engine room 2a Suspension tower 6 Brake booster 11 Actuator 21, 22 Anti-vibration rubber 25 Bracket 26a, 27a Fixed part 26b, 27b Extension part 26c, 27c Placement part

Claims (1)

[Claims] 1. An actuator mounting structure for an anti-lock brake system, wherein an actuator of the anti-lock brake system is elastically supported by a bracket via an anti-vibration rubber, and the bracket is mounted on a vehicle body. The bracket is disposed behind the tower and near the brake booster, and the bracket includes a pair of fixed portions coupled to the vehicle body, an extension portion extending from the vehicle body mounting portion following each of the fixed portions, A mounting portion which is installed between the distal ends of the extension portions and on which the actuator is mounted, the actuator mounting structure of the anti-lock brake system.