JP2535969Y2 - Mounting structure of actuator for anti-lock brake system in automobile - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for an actuator for an anti-lock brake system mounted on a lower surface of a floor panel via a mounting bracket.

[0002]

2. Description of the Related Art In general, as a method of mounting an actuator for an antilock brake system on a lower surface of a floor panel via a bolt, for example, as shown in FIG.
A support bracket B having an inverted hat-shaped cross section is fixed to the lower surface of the floor panel A by welding, and a mounting bracket D holding an actuator for an antilock brake system is fixed to the support bracket B via a bolt C. I have.

[0003]

However, in the mounting method described above, it is necessary to separately form the support bracket B and fix it to the lower surface of the floor panel A by welding.
As a result, the number of parts and the labor for assembling increase.

In order to cope with such a problem, an insertion hole is formed in the floor panel, and a screw shaft portion of the bolt is inserted into the insertion hole from the vehicle compartment side so that the screw shaft portion is projected below the floor panel. A method of attaching the mounting bracket to the protruding end portion via a nut is conceivable. In this method, when attaching the mounting bracket to a screw shaft portion projecting below the floor panel, the screw shaft portion is attached to the mounting bracket. There is a risk that the bracket may be inadvertently pushed up by the bracket, so when attaching the mounting bracket, one worker holds down the bolt in the vehicle interior while another worker pushes the bolt below the floor panel. It is necessary to perform the work of assembling the mounting bracket to the screw shaft part, and therefore, it is necessary to remove the Workability is bad.

Further, since the insertion hole formed in the floor panel penetrates from the vehicle interior to the outside of the vehicle interior, there is a possibility that rainwater or the like may enter the vehicle interior through the insertion hole.

The present invention has been developed in view of the above-mentioned circumstances, and an object thereof is to insert a screw shaft portion of a bolt into an insertion hole formed in a floor panel and to insert the screw shaft portion from above the floor panel into the insertion hole. When the accessory is inserted through a nut through a nut at the insertion end, the workability of mounting the mounting bracket holding the actuator for the antilock brake system to the screw shaft portion is good. It is an object of the present invention to provide an actuator mounting structure for an anti-lock brake system that can securely seal an insertion hole and efficiently suppress vibration transmitted to a floor panel.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a spare tire 3 which is formed on a floor panel 1 at a bottom wall 11 of a recess 10 for a spare tire and which is accommodated in the recess 10.
The bolt 6b is formed at a position opposite to the hole 6b, and a ring-shaped adhesive 9 having a sealing property is provided on the periphery of the insertion hole 12 on the upper surface of the bottom wall 11, while the screw of the bolt 6b is screwed. The shaft portion 61 is inserted into the insertion hole 12 from above the floor panel 1, the bolt 6 b is bonded to the bottom wall 11 via the adhesive 9, and the screw of the bolt 6 b inserted into the insertion hole 12 After the mounting bracket 5 for holding the anti-lock brake system actuator is inserted through the shaft portion 61, the nut 63 is screwed and the mounting bracket 5 is fixed to the bottom wall 11 via the bolt 6 b and the nut 63. It is characterized in that it is fixed at a position facing the spare tire 3.

[0008]

According to the present invention, the screw shaft portion 6 of the bolt 6b is provided.
1, when the mounting bracket 5 holding the anti-lock brake system actuator is mounted, even if the screw shaft portion 61 is erroneously pushed upward, the bolt 6b is attached to the bottom wall 11 by the adhesive material 9. The screw shaft 6 of the bolt 6b is securely fixed.
1 does not escape to the cabin side, and therefore, when assembling the mounting bracket 5 to the bolts 6b, there is no need to hold down the bolts 6b from the cabin side, and the bottom wall 11 Since the periphery of the formed insertion hole 12 is sealed with the adhesive material 9, water does not enter the vehicle interior from the insertion hole 12.

According to the present invention, the mounting bracket 5 is fixed to the bottom wall 11 of the housing recess 10 and to a position facing the spare tire 3 housed in the housing recess 10. When the operating vibration of the actuator 4 is transmitted to the bottom wall 11 via the mounting bracket 5 and the bottom wall 11 tries to resonate, the spare tire 3 acts as a so-called mass damper and is placed on the bottom wall 11. The spare tire 3 has a role as a spring member, and the wheel assembled to the spare tire 3
Since it acts as a weight and acts as a so-called dynamic damper, the vibration transmitted to the bottom wall 11 is efficiently damped.

[0010]

1 shows a rear floor panel 1 forming a rear floor of an automobile. A cross section U extending in the front-rear direction is provided on the lower surface of the rear floor panel 1 and on both sides in the vehicle width direction.
In addition to fixing the side member 2 having a U-shape, a housing recess 10 for the spare tire 3 is provided in the center of the rear floor panel 1.
Is formed.

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.

In the figure, reference numeral 31 denotes a wheel mounted on the spare tire 3.

In the embodiment shown in the drawings, an actuator 4 of an anti-lock brake system, which is an accessory of an automobile, is mounted below the rear floor panel 1 as follows.

That is, a mounting bracket 5 extending in the vehicle width direction is fixed to the lower surface of the actuator 4 via a bolt 50, and one end in the length direction of the mounting bracket 5 is attached to a lower wall 21 of the side member 2. Further, the other end side is fixed to the bottom wall 11 of the housing recess 10 in the floor panel 1 and the position facing the spare tire 3 housed in the housing recess 10 via bolts 6a and 6b, respectively. Specifically, a pair of front and rear cutout grooves 51a is formed at one longitudinal end of the mounting bracket 5,
A cylindrical rubber mount 7a is fitted into the notch groove 51, and a bolt 6a is inserted into the rubber mount 7a, and the insertion end of the rubber mount 7a is inserted into the lower wall 21 through a through hole 22 formed in the lower wall 21. The one end in the length direction of the mounting bracket 5 is fixed to the lower wall 21 of the side member 2 by screwing it to a nut 23 fixed to the upper surface 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 ring-shaped adhesive material 9 having a sealing property and made of a thick double-sided tape formed in a ring shape is attached to the peripheral portion of the substrate.

Incidentally, as the adhesive material 9, a ring-shaped butyl rubber sheet having both an adhesive function and a sealing function may be used.

Then, the 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 adhesive 9 adhered to the lower surface of the stiffener 8.
To the periphery of the insertion hole 12 on the upper surface of the bottom wall 11, the bolt 6 b is adhered to the upper surface of the bottom wall 11 together with the stiffener 8 by the adhesive 9, and the length of the mounting bracket 5 is reduced. The rubber mount 7b attached to the other end in the vertical direction is inserted through the screw shaft 61 of the bolt 6b, and the nut 63 is screwed onto the free end of the screw shaft 61, whereby the mounting bracket 5 is mounted. Is fixed to the bottom wall 11 via the bolt 6b.

The rubber mount 7b attached to the other end of the mounting bracket 5 in the length direction is attached to the bottom wall 1
When the screw 6 is inserted into the screw shaft 61 of the bolt 6b projecting downward from the
b may be pushed upward, the bolt 6b may be pressed by the adhesive 9 through the stiffener 8 to the bottom wall 1b.
1, the screw shaft 6 of the bolt 6b
1 does not escape to the passenger compartment side. Therefore, at the time of assembling the mounting bracket 5 to the bolt 6b, it is not necessary to hold down the bolt 6b from the vehicle interior side, and the assembling operation of the mounting bracket 5 to the bolt 6b can be performed simply and easily. It is.

In addition, the insertion hole 12 formed in the bottom wall 11
Since the periphery is sealed with the adhesive 9, the insertion hole 1
2, it is possible to reliably prevent water and the like from entering the vehicle interior.

In the above embodiment, 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 via the mounting bracket 5. Even if it is transmitted to the side member 2, it is not transmitted from the side member 2 to the floor panel 1.
The other end of the mounting bracket 5 is fixed to the bottom wall 11 of the accommodation recess 10 formed in the floor panel 1 and at a position facing the spare tire 3, so that the operation of the actuator 4 Vibration 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 bottom wall 1
The spare tire 3 placed on the bottom wall 11 functions 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. Vibration transmitted to is effectively damped.

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.

[0023]

[Effects of the Invention] As described above, the present invention is applied to the floor panel 1
An insertion hole 12 for a bolt 6b is formed in a bottom wall 11 of the spare tire accommodating recess 10 formed at a position facing the spare tire 3 accommodated in the accommodating recess 10.
A ring-shaped adhesive 9 having a sealing property is provided on the periphery of the insertion hole 12 on the upper surface of the first panel 1, and the screw shaft 61 of the bolt 6 b is inserted into the insertion hole 12 from above the floor panel 1, The bolt 6b is bonded to the bottom wall 11 via the adhesive 9, and the mounting bracket 5 for holding the anti-lock brake system actuator is inserted through the screw shaft 61 of the bolt 6b inserted into the insertion hole 12. By screwing the nut 63 upward, the mounting bracket 5 is fixed at a position facing the spare tire 3 on the bottom wall 11 via the bolt 6b and the nut 63, so that a screw shaft portion of the bolt 6b is formed. 61
When the mounting bracket 5 for holding the anti-lock brake system actuator is mounted, even if the screw shaft 61 is erroneously pushed upward, the bolt 6 b is attached to the bottom wall 11 via the adhesive 9. The screw shaft portion 6 of the bolt 6b.
1 does not escape to the cabin side, and therefore, when assembling the mounting bracket 5 to the bolt 6b, there is no need to hold down the bolt 6b from the cabin side. The work of assembling the mounting bracket 5 holding the actuator 4 to the bolt 6b can be performed easily and easily.
Since the periphery of the insertion hole 12 formed in 1 is sealed with the adhesive material 9, it is possible to reliably prevent water and the like from entering the vehicle interior from the insertion hole 12.

Further, according to the present invention, since the mounting bracket 5 is fixed to the bottom wall 11 of the housing recess 10 and to a position facing the spare tire 3, the operation vibration of the actuator 4 is reduced. The mounting bracket 5
Through the bottom wall 11, and even if the bottom wall 11 tries to resonate, the spare tire 3 acts as a so-called mass damper, and the spare tire 3 mounted on the bottom wall 11 serves as a spring member. In addition, since the wheel mounted on the spare tire 3 plays the role of a weight and acts as a so-called dynamic damper, the vibration transmitted to the bottom wall 11 can be efficiently damped.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a mounting structure of an accessory according to the present invention.

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 attachment structure of the accessory according to the present invention.

FIG. 4 is a schematic sectional view of a main part showing a conventional attachment mounting structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Floor panel 10 Storage recess 11 Bottom wall 12 Insertion hole 3 Spare tire 4 Actuator for antilock brake system 6b Bolt 61 Screw shaft part 63 Nut 9 Adhesive material

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 2-8685 (JP, U) JP-A 63-107280 (JP, U) JP-A 60-122425 (JP, U) JP-A 60-122 79656 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting bracket under a floor panel 1.
Anti-lock in a car adapted to be mounted via 5
The mounting structure of the actuator for the
Thus, the spare tire storage recess 10 formed in the floor panel 1
Spare tie housed in the bottom wall 11 and in the housing recess 10
A bolt 6b insertion hole 12 is formed at a position facing the screw 3
The periphery of the insertion hole 12 on the upper surface of the bottom wall 11
Is provided with a ring-shaped adhesive material 9 having a sealing property.
On the other hand, the screw shaft 61 of the bolt 6b is
Insert the bolt 6b into the insertion hole 12 from above
It adheres to the bottom wall 11 through an adhesive 9 and
The screw shaft 61 of the bolt 6b inserted through the insertion hole 12
After inserting the mounting bracket 5, screw the nut 63
Then, the mounting bracket 5 is connected to the bolt 6b and the nut.
The spare tire on the bottom wall 11 through the
Characterized in that it is fixed at a position facing 3
Actuator for anti-lock brake system in car
Data mounting structure.