JPH0740336U - Actuator mounting structure of antilock brake system in cabover type automobile - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an actuator mounting structure for an anti-lock brake system in a cab-over type automobile that can set the actuator piping lengths substantially evenly and avoid the problem of actuator mounting space and operating noise. To do. [Structure] A floor panel 6 is disposed between the left and right vehicle body frames 2 and 3 extending in the vehicle front-rear direction.
When the actuator 20 of the anti-lock brake system is mounted on a cab-over type automobile in which the engine 9 is mounted between the front wheel 7 and the rear wheel 8 on the lower surface, the actuator 20 is mounted via a cylindrical bush 26 (damper member). The mounting bracket 23 is elastically supported, and the mounting bracket 23 is supported by the front wheel 7 and the rear wheel 8 on the lower surface of the floor panel 6.
And the vehicle body frame 2 in the vicinity of the engine 9. Further, the waterproof cover 30 is arranged on the front portion of the vehicle body of the actuator 20, and the eaves portion 31 extending forward of the vehicle body is formed on the waterproof cover 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for an actuator when an antilock brake system (hereinafter referred to as an ABS system) is mounted on a cab-over type automobile.

[0002]

[Prior art]

 Generally, an automobile may be equipped with an ABS system in order to improve the stability of the vehicle body posture and the maneuverability during sudden braking of the vehicle. In this ABS system, actuators are installed in the pipeline connecting the master cylinder and the wheel cylinders of the front and rear wheels, and this actuator controls the hydraulic pressure to each wheel cylinder. Prevents it from locking up.

By the way, when the actuator of the ABS system is installed in a cab-over type automobile, it is difficult to secure a mounting space because the engine room of this type of automobile is small, and the ignition key is accessible depending on the mounting location. There is a problem that the operation noise of the actuator becomes unpleasant when rotated to the position.

In order to avoid such problems of mounting space and operating noise, conventionally, there has been proposed one in which an actuator is arranged on the bottom wall of a spare tire storage recess formed in the rear floor panel (Japanese Patent Laid-Open No. HEI 5). -170141 gazette). With this mounting structure, the dead space of the spare tire storage section can be effectively used, and the problem of operating noise can be alleviated by moving the actuator away from the driver's seat.

[0005]

[Problems to be solved by the device]

 However, since the mounting structure of the above-mentioned conventional publication is a structure in which the actuator is arranged on the rear floor panel at the rear part of the vehicle body, there is an imbalance in the length of the pipes routed from the actuator to the wheel cylinders of the front and rear wheels. There's a problem.

The present invention has been made in view of the above conventional circumstances, and is an anti-lock in a cab-over type automobile capable of avoiding the problems of the above-mentioned mounting space and operating noise while avoiding the imbalance of the pipe length of the actuator. It is intended to provide an actuator mounting structure for a brake system.

[0007]

[Means for Solving the Problems]

 Therefore, the present invention proposes an actuator mounting structure for an antilock brake system in a cabover type automobile in which an engine is mounted between a front wheel and a rear wheel between left and right body frames extending in the vehicle front-rear direction. The mounting bracket is supported, the mounting bracket is fastened to the vehicle body frame near the engine between the front wheel and the rear wheel on the bottom surface of the floor panel, and the waterproof cover is provided on the vehicle body front side of the actuator. The watertight cover is characterized in that it has an eaves portion that extends forward of the vehicle body.

Here, the reason why the above-mentioned actuator is provided with the waterproof cover and the eaves part is to prevent splashing water from splashing on the actuator and the engine. In other words, if the actuator is placed behind the front wheel on the bottom of the floor panel, water splashed by the front wheel may splash on the actuator, and water splashed on the actuator may bounce back to the engine depending on the turning angle of the front wheel. There is.

[0009]

[Action]

 According to the actuator mounting structure of the ABS system according to the present invention, since the actuator is arranged between the front wheel and the rear wheel on the lower surface of the floor panel, the length of the pipe that is routed from the actuator to each wheel cylinder of the front wheel and the rear wheel. Can be made approximately even. Moreover, by effectively utilizing the dead space under the floor panel, the actuator mounting space can be secured, and since it is mounted on the outside of the vehicle body, the problem of annoying operating noise can be alleviated.

Further, in the present invention, since the waterproof cover is arranged on the front side of the vehicle body of the actuator, and the eaves portion extending forward of the vehicle body is formed on the waterproof cover, water splashed by the front wheel is protected by the water-proof cover and the eaves portion. It will hit the road surface and will be prevented from splashing water on the actuator and engine.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 7 are views for explaining an actuator mounting structure of an antilock brake system in a cabover type vehicle according to an embodiment of the present invention.

In the drawings, reference numeral 1 denotes a vehicle body frame that constitutes a lower portion of a vehicle body of a cab-over type automobile according to the present embodiment. The front frame 4 extending in the vehicle width direction is connected between the front ends of the vehicle body 1, the cross member 5 is connected between the rear portions thereof, and the floor panel 6 is connected to the upper portion of the vehicle body frame 1.

Front wheels 7 and rear wheels 8 are provided on the left and right sides of the front and rear ends of the body frame 1, respectively, and the front wheels 7 and the rear wheels 8 are attached to the body frame 1 via a suspension device. It is supported. A vertical engine 9 is mounted on the vehicle body frame 1, and a transmission 10 and a propeller shaft 11 for transmitting the driving force of the engine 9 to the rear wheels 8 are connected to the engine 9. The engine 9 is located closer to the front wheel 7 in the center of the vehicle body frame 1 in the vehicle width direction, and is arranged on the lower surface of the floor panel 6, and the driver's seat is arranged on the upper right side of the engine 9. .

As shown in FIG. 7, the vehicle body frame 1 is equipped with a braking device 15 having an ABS system, which is a feature of this embodiment. In this braking device, a brake pedal 16 is connected to a master cylinder 17 via a brake booster 16a, and the master cylinder 17 and the wheel cylinders of the front wheels 7 and the rear wheels 8 are connected to a solenoid valve by hydraulic pipes 19a to 19e. Is connected through an actuator 20 having a built-in wheel, and a wheel speed sensor 21 for detecting the rotation speeds of the wheels 7 and 8 and a detection signal from the sensor 21 are arithmetically processed to determine the wheel rotation state. The ECU 22 outputs a control signal of the brake hydraulic pressure according to the road surface condition to the actuator 20.

The actuator 20 is housed in a mounting bracket 23. The mounting bracket 23 has a structure in which the bottom sides of two plate members 24, 24 that are bent and formed in a substantially U shape are joined by a bottom plate 25. The actuator 20 is provided with three cylindrical bushes 26 fixed to the bottom plate 25. Is elastically supported via.

The actuator 20 is arranged on the lower surface of the floor panel 6 between the front wheel 7 and the rear wheel 8 and is attached to the side member 2 near the engine 9. Both outer flanges 24a, 24a of the mounting bracket 23 are fixed to the bottom wall 2a of the side member 2 with bolts. The flanges 24b, 24b on the inner side of the vehicle are bolted and fixed to a rein hose 27 having a hat-shaped cross section joined to the lower surface of the floor panel 6.

A waterproof cover 30 is provided on the actuator 20. The waterproof cover 30 has a structure in which a vertical wall portion 30a that covers the actuator 20 from the front surface of the vehicle body to the outer surface of the vehicle body and an inclined wall 30b that extends obliquely rearward from the lower end of the vertical wall portion 30a are integrally formed. The inclined wall 30b is bolted and fixed to the lower surface of the mounting bracket 23.

An eaves portion 31 is formed on the waterproof cover 30. The eaves portion 31 has a structure in which a base portion 31b joined along the inclined wall 30b is integrally formed with an eaves portion 31a extending substantially horizontally in front of the vehicle body, and a tip edge of the eaves portion 31a is curved downward. .

Next, the function and effect of this embodiment will be described. The ABS system-equipped braking device 15 of this embodiment prevents the wheels from locking during sudden braking of the vehicle to improve the stability of the vehicle body posture and the maneuverability.

According to the braking system 15 with the ABS system of the present embodiment, the actuator 20 thereof is arranged between the front wheel 7 and the rear wheel 8 on the lower surface of the floor panel 6, and the side member 2 near the engine 9. Since the hydraulic pipes 19c and 19d are routed from the actuator 20 to the wheel cylinders of the front wheel 7 and the pipes 19d and 19e are routed to the wheel cylinders of the rear wheel 8, the lengths of the hydraulic pipes 19c and 19e are substantially equal. Can be set.

Further, since the actuator 20 is arranged on the lower surface of the floor panel 6, a mounting space can be secured by effectively utilizing the dead space, and since the actuator 20 is mounted on the outside of the vehicle body, the operation sound at the start of the key switch is generated. Can relieve discomfort. However, in this embodiment, since the actuator 20 is elastically supported by the mounting bracket 23 and the bracket 23 is directly bolted and fixed to the side member 2, the mounting rigidity can be improved while absorbing operating vibration. Can also suppress the generation of operating noise.

Further, in this embodiment, since the waterproof cover 30 is provided on the front surface of the vehicle body of the actuator 20, and the eaves portion 31 extending forward of the vehicle body is formed on the waterproof cover 30, the water splashed by the front wheel 7 is formed. Will hit the eaves portion 31 from the waterproof cover 30 and fall to the road surface. As a result, splashing water can be prevented from splashing on the actuator 20, and water can be prevented from splashing back to the engine 9 side when the front wheel 7 turns.

[0023]

[Effect of device]

 As described above, according to the actuator mounting structure of the anti-lock brake system in the cab-over type automobile according to the present invention, the actuator is fastened between the front wheel and the rear wheel on the lower surface of the floor panel and to the vehicle body frame near the engine, Since a waterproof cover is provided on the front side of the vehicle body of the actuator and the eaves extending forward are formed on the waterproof cover, it is possible to secure a mounting space while setting the actuator piping lengths substantially evenly and to operate the actuator. It has the effect of avoiding the problem of sound, and has the effect of avoiding splashing water on the actuator and engine.

[Brief description of drawings]

FIG. 1 is a plan view illustrating an actuator mounting structure of an ABS system in a cab-over type automobile according to an embodiment of the present invention.

FIG. 2 is a side view showing the structure of the embodiment.

FIG. 3 is a rear view showing a mounting state of the mounting bracket of the above embodiment.

FIG. 4 is a perspective view showing a waterproof cover and an eaves portion of the above embodiment.

FIG. 5 is a side view showing the actuator having the above-described embodiment structure.

FIG. 6 is a plan view showing an actuator having the above-mentioned embodiment structure.

FIG. 7 is a schematic configuration diagram of the ABS system of the above embodiment.

[Explanation of symbols]

 1 Body Frame 6 Floor Panel 7 Front Wheel 8 Rear Wheel 9 Engine 15 ABS System 20 Actuator 23 Mounting Bracket 26 Cylindrical Bush (Damper Member) 30 Waterproof Cover 31 Eaves

Claims (1)

[Scope of utility model registration request] 1. An actuator mounting structure for an antilock brake system in a cab-over type automobile in which an engine is mounted near a front wheel between left and right vehicle body frames extending in the vehicle front-rear direction, and the actuator is supported by a mounting bracket. , The fastening bracket is fastened to the vehicle body frame near the engine between the front wheel and the rear wheel on the lower surface of the floor panel, and the waterproof cover is arranged on the front side in the vehicle body front-rear direction of the actuator,
An actuator mounting structure for an antilock brake system in a cab-over type automobile, characterized in that an eaves portion extending forward of the vehicle body is formed on the waterproof cover.