JP2975200B2 - Mounting structure of actuator for antilock brake system for vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an actuator of an antilock brake system mounted on a vehicle to a body.

[0002]

2. Description of the Related Art An anti-lock brake system mounted on a vehicle generally supplies brake fluid pressure from a master cylinder to wheel cylinders of a front wheel and a rear wheel as disclosed in Japanese Utility Model Laid-Open Publication No. 62-197664. And an actuator having a solenoid valve for controlling the brake fluid pressure to the wheel cylinders via the actuator to prevent the front and rear wheels from being locked.

[0003]

In general, the actuator is mounted in an engine room, for example, on a support member of the engine. However, when the engine room is small, such as in a minicar, the actuator is mounted in the engine room. When it is difficult to secure a space for mounting the actuator, it is conceivable to mount the actuator on the lower surface of a floor panel constituting a floor of a vehicle compartment.

However, while the floor panel is formed of a thin plate material, the actuator is mounted on the lower surface of the floor panel because the actuator is heavy and an operation vibration occurs due to the operation of the solenoid valve. In this case, there is a problem that the operation vibration of the actuator propagates to the floor panel and the floor panel resonates.

The present invention has been developed in view of the above circumstances. An anti-lock brake for a vehicle in which the actuator is mounted below the floor panel but the floor panel does not resonate due to the operation vibration of the actuator. An object of the present invention is to provide a structure for mounting an actuator of a system.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a spare tire 3 on a floor panel 1 on which an anti-lock brake system is mounted and a side member 2 extending in the vehicle longitudinal direction is disposed on a lateral side of the vehicle . Forming a receiving recess 10;
Moreover, the side member 2 and the accommodation recess 10 are aligned in the vehicle width direction.
In a vehicle having a positional relationship that is adjacent to the vehicle, a mounting bracket 5 is provided on the actuator 4 constituting the antilock brake system, and the actuator 4 is mounted on the mounting bracket.
It is supported while placed on a racket 5, one end of the mounting bracket 5 is fixed to the side member 2, and the other end is fixed to the bottom wall 11 of the accommodation recess 10 in the floor panel 1. And the mounting bracket 5
It is characterized by being installed in a form extending in the vehicle width direction .

The mounting bracket 5 includes a rubber mount 7
a. 7b through the side member 2 and the bottom wall 11
It is desirable to fix to.

[0008]

According to the present invention, one end of the mounting bracket 5 provided on the actuator 4 is fixed to the rigid side member 2 extending in the vehicle longitudinal direction. There is no danger of vibrations propagating to the floor panel 1 via the side members 2, and the other end of the mounting bracket 5 is a bottom wall 11 of a housing recess 10 formed in the floor panel 1 and the spare Tire 3
Is fixed at a position opposite to the bottom wall 11, so that even if the operation vibration of the actuator 4 is transmitted to the bottom wall 11 via the mounting bracket 5 and the bottom wall 11 resonates,
The spare tire 3 on which the wheel 31 is mounted acts as a so-called mass damper, and the spare tire 3 supported on the bottom wall 11 functions as a spring member.
In addition, the wheel 31 mounted on the spare tire 3 plays a role of a weight, acting as a so-called dynamic damper, and the vibration transmitted to the bottom wall 11 is efficiently damped. And the mounting bracket 5 is located on the adjacent side
In a state where the member 2 and the accommodation recess 10 are bridged,
The bracket itself can be made because it is installed in the direction
The actuator, which is the source of vibration,
The eta 4 can be located further away from the cabin.
To reduce the noise and vibration experienced by passengers as much as possible.
Can be. In addition, in terms of road clearance
Also, it can be realized that the mounting bracket does not protrude downward
You. And, importantly, the actuator 4
By supporting it on the racket 5
Thus, the support rigidity of the actuator 4 can be increased,
Therefore, the operation vibration is reliably generated on the side members 2 and the bottom wall 11.
It is actually transmitted, and the vibration suppressing action is obtained as expected.

According to the present invention, since the mounting bracket 5 is fixed to the side member 2 and the bottom wall 11 via the rubber mounts 7a and 7b, the actuator 4 mounted on the mounting bracket 5 is fixed. However, the rubber mount 7 is attached to the floor panel 1 and the side members 2.
Therefore, when the floor panel 1 and the side member 2 vibrate due to a shake phenomenon or the like accompanying a high-speed running of the vehicle, the actuator 4 and the rubber mounts 7a and 7b become dynamic dampers. The vibration of the floor panel 1 and the side members 2 can be efficiently damped.

In FIG. 1, reference numeral 1 denotes a rear floor panel forming a rear floor of an automobile.
A side member 2 having a U-shaped cross section extending in the front-rear direction is fixed to the lower surface of the vehicle and to both sides in the vehicle width direction, and a storage recess 1 for a spare tire 3 is provided in the center of the rear floor panel 1.
0 is formed. Thus, the side member 2 and the accommodation recess
10 is adjacent to the vehicle in the vehicle width direction.
As is clear from FIG. 1, an accommodation space is formed between
The actuator 4 is installed in the space of
Is placed. And the actuator 4 is
It is supported in a state where it is placed on the unit 5.

As is known, the spare tire 3 has a bolt 32 inserted into a wheel 31 assembled to the spare tire 3, and the inserted end of the bolt 32 is attached to the lower surface of the bottom wall 11 in the housing recess 10. By screwing to the fixed nut 33,
It is stored in the accommodation recess 10.

According to the present invention, the actuator 4 constituting the anti-lock brake system is mounted below the rear floor panel 1 as follows.

That is, in the embodiment shown in the drawings, a mounting bracket 5 extending in the vehicle width direction is fixed to the lower surface of the actuator 4 via bolts 50, and one end of the mounting bracket 5 in the longitudinal direction is connected to the side member. 2 lower wall 21
And a bolt 6a at the other end on the bottom wall 11 of the housing recess 10 in the floor panel 1 and at a position facing the spare tire 3 housed in the housing recess 10.
-It is fixed via 6b.

More specifically, a pair of front and rear notches 51a is formed at one end in the length direction of the mounting bracket 5, and a cylindrical rubber mount 7a is fitted into the notches 51, and the rubber mount 7 The bolt 6a is inserted into the mounting bracket 5 through a through hole 22 formed in the lower wall 21 and screwed into a nut 23 fixed to the upper surface of the lower wall 21. One end in the length direction is fixed to the lower wall 21 of the side member 2.

A pair of front and rear notches 51b are also formed at the other end of the mounting bracket 5 in the longitudinal direction.
While a cylindrical rubber mount 7b is fitted to 1b, a narrow stiffener 8 extending in the front-rear direction is separately formed, and through holes 81 are formed at both longitudinal ends of the stiffener 8;
The screw shaft portion 61 of the bolt 6b is inserted into the through hole 81, and the head 62 of the bolt 6b is fixed to the upper surface of the stiffener 8 by welding.

On the other hand, a pair of front and rear insertion holes 12 corresponding to the through holes 81 formed in the stiffener 8 are formed in a portion of the bottom wall 11 opposed to the spare tire 3, while a lower surface of the stiffener 8 is formed. The through hole 81
A thick double-sided tape 9 formed in a ring shape is attached to the peripheral portion of. Instead of the double-sided tape 9, a ring-shaped butyl rubber sheet having both an adhesive function and a sealing function may be used.

Then, a screw shaft portion 61 of the bolt 6b attached to the stiffener 8 is inserted through the insertion hole 12,
The insertion end is projected below the bottom wall 11, and the double-sided tape 9 attached to the lower surface of the stiffener 8 is aligned with the peripheral edge of the insertion hole 12 on the upper surface of the bottom wall 11. After temporarily fixing the bolt 6b to the upper surface of the bottom wall 11 with the tape 9 via the stiffener 8, the rubber mount 7b attached to the other longitudinal end of the mounting bracket 5 is attached to the bolt 6b. The nut 63 is inserted through the screw shaft 61 and the free end of the screw shaft 61 is
By screwing, the other end in the length direction of the mounting bracket 5 is fixed to the bottom wall 11 via the bolt 6b.

Since one end of the mounting bracket 5 provided on the actuator 4 is fixed to the rigid side member 2, the operation vibration of the actuator 4 is transmitted through the mounting bracket 5 to the side member 2. Is not transmitted from the side member 2 to the floor panel 1, and the other end of the mounting bracket 5 is connected to the bottom wall 11 of the accommodation recess 10 formed in the floor panel 1. In addition, since it is fixed at a position facing the spare tire 3, the operating vibration of the actuator 4 is transmitted to the bottom wall 11 via the mounting bracket 5, and even if the bottom wall 11 resonates, The spare tire 3 on which the wheel 31 is mounted acts as a so-called mass damper, and the spare tire 3 mounted on the bottom wall 11 is mounted. The wheel 3 plays a role as a spring member, and the wheel 31 mounted on the spare tire 3 plays a role of a weight, thus acting as a so-called dynamic damper, and the vibration transmitted to the bottom wall 11 is efficiently damped. Because

In the above embodiment, since the mounting bracket 5 is bolted to the side member 2 and the bottom wall 11 via the rubber mounts 7a and 7b, the mounting bracket 5 is assembled to the mounting bracket 5. The actuator 4 is elastically supported on the body, that is, the floor panel 1 and the side members 2 via the rubber mounts 7a and 7b. Therefore, the floor panel 1 and the side members 2 are moved, for example, when the vehicle runs at high speed. When vibration occurs due to the shake phenomenon, the actuator 4 and the rubber mounts 7a and 7b operate as dynamic dampers, and the vibration of the floor panel 1 and the side members 2 is efficiently damped.

In the above embodiment, the screw shaft portion 61 of the bolt 6b attached to the stiffener 8 is attached to the bottom wall 11
A ring-shaped double-sided tape 9 attached to the peripheral edge of the through-hole 81 on the lower surface of the stiffener 8 while being inserted into the through-hole 12 formed at the bottom of the stiffener 8. The stiffener 8 is stopped on the upper surface of the bottom wall 11 through the
The periphery of the insertion hole 12 formed in the inner space is sealed with the double-sided tape 9, so that water or the like can be reliably prevented from entering the vehicle interior through the insertion hole 12, and the bolt 6b
When assembling the mounting bracket 5 to the free end of the screw shaft portion 61, the stiffener 8 does not inadvertently float without holding down the stiffener 8 from the passenger compartment side.

That is, when the rubber mount 7b attached to the mounting bracket 5 is inserted into the free end of the screw shaft 61 of the bolt 6b, the rubber mount 7b erroneously pushes the bolt 6b upward. However, since the stiffener 8 fixing the bolt 6b is temporarily fixed to the bottom wall 11 via the double-sided tape 9, the screw shaft portion 61 of the bolt 6b escapes to the passenger compartment side. The bolt 6b of the mounting bracket 5
The work of assembling into the device can be performed easily and easily.

In the above embodiment, the other end of the mounting bracket 5 is located at the bottom wall 11 of the spare tire accommodating recess 10 on the floor panel 1 and at the position facing the spare tire 3 accommodated in the accommodating recess 10. However, the present invention is not limited to this. For example, it may be fixed to a portion of the bottom wall 11 that faces the wheel 31.

[0023]

As described above, according to the present invention, the mounting bracket 5 is provided on the actuator 4 and one end side of the mounting bracket 5 is fixed to the rigid side member 2.
The other end is connected to the accommodation recess 10 in the floor panel 1.
Is fixed to the bottom wall 11, even if the operation vibration of the actuator 4 is transmitted to the side member 2 via the mounting bracket 5, the vibration is not transmitted from the side member 2 to the floor panel 1 . And the mounting block
The racket 5 includes the adjacent side members 2 and the accommodation recesses 10.
It is installed in the vehicle width direction in a state that bridges the
Bring the bracket itself as far back as possible
As a result, the actuator 4 as the vibration source is moved from the vehicle compartment
Vibration felt by the occupant that can be placed at a distance
Noise can be reduced as much as possible. In addition, mounting
The bracket 5 has a cross-linked structure as described above.
Therefore, the mounting bracket 5 does not protrude downward.
It is also advantageous in terms of road clearance. And heavy
What is important is that the actuator 4 is attached to the mounting bracket 5.
Actuator by supporting it on the
The supporting rigidity of the eta 4 can be increased, and
The operating vibration is reliably transmitted to the side members 2 and the bottom wall 11.
The rigidity of the side member 2 itself and the vibration suppression function on the bottom wall 11 side
The vibration suppression effect can be obtained as expected. Also <br/>, transmitted to the bottom wall 11 hydraulic vibration through the mounting bracket 5 of the actuator 4, also the bottom wall 11 resonates, said spare tire 3 assembled the wheel 31 In addition to acting as a so-called mass damper, the bottom wall 1
The spare tire 3 placed on the spare wall 3 functions as a spring member, and the wheel 31 mounted on the spare tire 3 acts as a weight, acting as a so-called dynamic damper. The transmitted vibration can be efficiently damped. Therefore, even though the actuator 4 is mounted below the floor panel 1, the resonance of the floor panel 1 caused by the operation vibration of the actuator 4 can be effectively suppressed. It is.

According to the present invention, the mounting bracket 5 is fixed to the side member 2 and the bottom wall 11 via the rubber mounts 7a and 7b, so that the actuator 4 assembled to the mounting bracket 5 can be mounted. ,body,
That is, the floor panel 1 and the side members 2 are elastically supported via the rubber mounts 7a and 7b.
Is vibrated due to a shake phenomenon or the like that accompanies high-speed running of the vehicle.
The a.7b operates as a dynamic damper, so that the vibration of the floor panel 1 and the side members 2 can be efficiently damped.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an attachment structure of an actuator.

FIG. 2 is an enlarged sectional view taken along line XX in FIG.

FIG. 3 is a schematic plan view of a main part showing the mounting structure of the actuator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor panel 10 Storage recess 11 Bottom wall 2 Side member 3 Spare tire 4 Actuator 5 Mounting bracket 7a ・ 7b Rubber mount

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B62D 25/20

Claims (2)

(57) [Claims] 1. A floor panel (1) on which an anti-lock brake system is mounted and a side member (2) extending in the front-rear direction of the vehicle body is arranged on a side portion in a vehicle width direction. 10) and the side
The member (2) and the accommodation recess (10) are adjacent to each other when viewed in the vehicle width direction.
In a vehicle having a positional relationship , a mounting bracket (5) is provided on an actuator (4) constituting an antilock brake system, and the actuator (4) is connected to the actuator (4).
The mounting bracket (5) is supported while mounted on the mounting bracket (5). One end of the mounting bracket (5) is fixed to the side member (2), and the other end is accommodated in the floor panel (1). The mounting bracket (5) is fixed to the bottom wall (11) of the recess (10) and extends in the vehicle width direction.
A mounting structure for an actuator of an anti-lock brake system for a vehicle, wherein the actuator is installed in a folded form . 2. The side member (2) is connected to the mounting bracket (5) via rubber mounts (7a) and (7b).
The mounting structure for an actuator of an antilock brake system for a vehicle according to claim 1, wherein the actuator is fixed to the bottom wall (11).