JP2559901Y2 - Pin slide type caliper body for vehicle disc brake - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake mounted on a vehicle such as an automobile or a motorcycle, and more particularly, to a disc brake using a connecting bolt for fastening a divided caliper body. Improved rigidity
The present invention relates to the structure of a pin slide type caliper body .

[0002]

2. Description of the Related Art Disc brakes used in automobiles and the like
The caliper body includes, for example,
No. 6 and Japanese Utility Model Laid-Open No. 1-80833.
Alternatively, there is a pin slide type in which a pair of slide pins slide in the disk axis direction . The former caliper body
Are the action parts and counteractions located on both sides of the disk rotor.
And the two parts over the outer edge of the disk rotor.
It has a configuration in which the bridge part to be connected is integrally formed.
You. A disk rotor side is opened to the working portion to open the disk.
Insert the piston into the cylinder hole provided in the axial direction of the scroller.
A liquid-tight and movably housed cylinder surrounding the cylinder hole
At the outer peripheral side of the disk rotor on the peripheral wall of the
A rib in the direction of the rotor axis is formed. Caliper body de
Between the disk rotor inlet and outlet sides of the disk rotor.
Guide holes in the axial direction of the disc rotor are provided in the four arms.
Project from the caliper bracket fixed to the vehicle body
Insert the slide pins into the guide holes and carry
Pabody is movably supported in the axial direction of the disk rotor.
I have.

[0003] The latter caliper body is a
And a reaction piece having a reaction part.
Divided into two pieces, one on the working part and the other on the working part.
The reaction part is inserted into the bolt hole formed in the axial direction of the disk rotor.
The two pieces are integrally connected by screwing a connection bolt from a side piece . The working part
Disc rotor inlet and outlet sides with the
The respectively, disc low opened the disc rotor side
A guide hole is provided in the axial direction of the tool, and slide pins protruding from the caliper bracket in the direction opposite to the disc rotor are
It is movably supported in the disk rotor axial direction.

[0004]

[Problems to be solved by the invention] By the way, like this
In the pin slide type caliper body, the disc rotor
The reaction part and the reaction part are bridged by the braking reaction force from
When the part is deformed by opening it in a U-shape around the fulcrum, the piston
The cylinder hole that accommodates
May interfere with the slide,
The inserted guide hole also bends and deforms, and the caliper body
This may hinder the smooth sliding of

[0005] However, the former caliper body is
Recesses formed on the outer peripheral side of the disk rotor on the peripheral wall of the cylinder bore
Although the deformation of the cylinder hole is suppressed by the valve,
Ribs do not prevent bending deformation of the guide hole
Was.

[0006] The latter caliper body has a bottom wall of a bolt hole.
Rotate the disc rotor from the outer surface to the boss of the guide hole.
Disk rotor that passes through the center between the inlet and outlet bosses
Reinforcement ribs perpendicular to the radial line are provided.
The strong ribs support the load on the boss in the disk circumferential direction.
Of the guide hole due to the above-mentioned U-shaped deformation.
It did not prevent shape. Also, the bolt holes
Is formed on the bridge part of the action part side piece.
The distance between the female thread and the bottom wall outer surface of the bolt hole is long.
The tightening torque of the connecting bolt screwed into the female thread
Nor could it be used to reinforce the guide holes.

[0007] Further, the above-mentioned C-shaped deformation is caused by the bridge portion.
The working part and the reaction part are pressed against the disk rotor side
And open, so the amount of deformation is small on the bridge side.
Inward of the working part and reaction part in the disk rotor radial direction
It will be bigger. For this reason, the latter caliper body
The guide hole more than the outer circumference of the disk rotor.
Data radially outside, the above-mentioned C-shaped deformation
Although the amount of deformation of the guide hole is minimized, the guide hole
Outside the outer edge of the disk rotor in the radial direction of the disk rotor
Position prevents the caliper body from becoming too large.
Did not.

[0008] The present invention is based on such a situation.
One that is, Toko filtrate is an object of the present invention, Kyaripabode
Divides the action part and the reaction part into two pieces
If it is a mold, the connecting bolt that connects both pieces together
Using the tightening torque, bosses in cylinder holes and guide holes
By increasing the rigidity of the
Minimize deformation of guide holes caused by U-shaped deformation of Pabody
To prevent the caliper body from sliding smoothly.
Pin slide for compact disc brakes for vehicles
It is to provide a mold caliper body.

[0009]

[Means for Solving the Problems] To achieve the above objectives
Therefore, the present invention is arranged oppositely on both sides of the disk rotor.
Operating part and reaction part, and these two parts are disc rotors.
A bridge portion that straddles and connects the outer periphery.
And a reaction part side piece having the action part and the reaction part
And a reaction portion side piece having a portion.
Of the disk rotor shaft formed on the
Screw the connecting bolt from the reaction piece on the reaction hole
Divided caliper bobbo for connecting the two pieces together
A disk rotor side opening in the working portion.
To the cylinder bore provided in the axial direction of the disk rotor.
Tongue so as to be liquid-tight and movable and surround the cylinder hole.
On the outer peripheral side of the disk rotor on the peripheral wall of the cylinder bore
A rib is formed in the axial direction of the scroller to sandwich the cylinder hole.
Of the disk rotor inlet and outlet sides of the
In addition, open the disk rotor side to
Boss of the guide hole provided at the bottom of the bolt hole.
It protrudes from the disk rotor side of the wall and is fixed to the vehicle body.
The cap provided between the action part and the disk rotor
Projected from the ripper bracket in the direction away from the disk rotor
Insert a slide pin into the guide hole and
Disc brakes supported movably in the axial direction of the motor
The pin slide type caliper body
The hole is half of the disk rotor than the outer edge of the disk rotor.
Arranged radially inward to reduce the number of female threads in the bolt holes
And the connecting bolt is formed on the action portion.
Shaped to the length that passes through the bridge part and reaches the female thread part
The boss of the guide hole from the bottom wall outer surface of the bolt hole.
The reinforcing ribs extending over the disk rotor are inserted into
Disk rotor radial line passing through the center between the output bosses
It is characterized by being formed in parallel with.

[0010]

[Action] According to the above-described configuration, the guide hole is provided in the disc row.
To the inner side of the disk rotor radial direction
Despite the compact caliper body, the bolt
The tightening torque of the connecting bolt screwed into the hole
From the bottom wall of the bolt hole on the long line to the center of the caliper body
Acting on reinforcing ribs parallel to the disk rotor radial line
Reinforced ribs have increased rigidity and increased rigidity
The rib supports the boss of the guide hole,
Deformation of the guide hole due to the C-shaped deformation of the caliper body
As much as possible to ensure smooth sliding of the caliper body.
Keep.

[0011]

【Example】 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
I do.

The disc brake 1 is connected to wheels (not shown).
A disk rotor 2 rotating integrally with the disk rotor 2
Plate-shaped caliper bracket fixed to the vehicle body on one side of
And a pair of slide pins 4 and 4
Pin that is movably supported in the axial direction of the disc via
The slide type caliper body 5 and the caliper body 5
Inside the disk rotor 2, the disk rotor 2 is opposed to the disk rotor 2.
It consists of a pair of friction pads 6,6.

The caliper bracket 3 is provided at the center of the disc.
A pad mounting recess 3a is provided on the outer peripheral side of the crawler.
In the pad mounting recess 3a, the working portion side of the caliper body 5
A friction pad 6 is provided. Also, the caliper body 5
A package disposed between the action section and the disk rotor 2.
Of the caliper bracket 3 sandwiching the
The mounting holes 3b, 3
b is formed through the mounting holes 3b, 3b.
The above-described slide pins 4 protruding from the disk rotor side
4 is fixed by caulking.

The caliper body 5 is provided on the disk rotor 2.
Acting part 5a and reaction part 5b arranged opposite to both sides
And these two portions 5a and 5b are straddled over the outer peripheral edge of the disk rotor.
And a bridge portion 5c connected to the bridge portion.
A working portion side piece 5d having a working portion 5c and a working portion 5a;
The reaction piece side piece 5e having the action section 5b and the two pins
And the reaction portion side piece 5d and the reaction portion side piece 5d.
5e is connected with four connecting bolts 7. Working part
The side piece 5d is formed by casting the action portion 5a and the bridge portion 5c.
It is formed integrally by molding, and is
The piece 5e is made of a whole plate material such as a steel plate punched by a press machine.
The body is a reaction portion 5b which also serves as a reaction claw. Soshi
The working portion 5a is provided with a caliper on one side of the disk rotor 2.
The reaction portion 5b is disposed with the bracket 3 interposed therebetween.
It is arranged on the other side of the crater 2.

A large-diameter cylinder is provided at the center of the action portion 5a.
A hole 8 opens on the disk rotor side to form a disk rotor shaft.
The cylinder hole 8 has a cup-shaped pin.
The stone 9 is housed in a liquid-tight and movably movable manner.
A hydraulic chamber 10 is defined between the bottom wall of the stone 9 and the cylinder hole 8.
Is done. Cylinder hole peripheral wall surrounding the cylinder hole 8
The disk rotor shaft 5f
5g, 5g in the direction are formed, and the ribs 5g, 5g
The rigidity causes the caliper body 5 to move
The bending deformation of the cylinder hole 8 caused by the U-shaped deformation,
The smooth sliding of the piston 9 is ensured.

Rotation of the disk rotor of the reaction portion side piece 5d
Bolts opening on the reaction section 5b side on the entry side and the exit side
Two holes 5h are provided in the axial direction of the disk rotor.
Have been. The bolt hole 5h passes through the bridge 5c.
Formed at a depth that reaches the action portion 5a, and
A female thread portion 5i is formed in the use portion 5a.
D5 passes through the bridge 5c and reaches the female thread 5i.
Connecting bolt 7 having a length of
By being screwed into the female screw portion 5i, they are integrally connected.
You.

The data of the action portion 5a sandwiching the cylinder hole 8
Guide holes 5j and 5 are provided on the disk rotor inlet and outlet sides.
j opens the disk rotor side and the disk rotor axial direction
It has been kicked set in, the caliper body 5, Kyaripabura
Arranged between the action portion 5a of the bracket 3 and the disk rotor 2
From the part that is
By inserting the slide pin 4 into the guide hole 5j
And supported movably in the disk axial direction. Said guy
The hole 5j is located between the outer periphery of the disk rotor and the disk rotor.
Radially inward of the rotor, and
The disk rotor is arranged radially outward in the disk rotor circumferential direction.
It is located approximately at the middle of the bolt holes 5h, 5h
The guide hole 5j is more displaced than the outer periphery of the disc rotor.
The caliper is located radially inward,
The body 5 is formed compact. Guide hole 5
The boss 5k of j is more decentered than the bottom wall 5m of the bolt hole 5h.
Protruding from the disk rotor side, and at the bottom of the guide hole 5j.
By forming the side in the boss 5k, the slide pin
4 insertion length is secured.

The disk reciprocating side of the working portion side piece 5d and
A bottom wall 5 covering the bottoms of the bolt holes 5h, 5h
m, 5m from the outer surface to the bottom of the guide hole 5j.
Triangular plate-shaped reinforcing ribs 5n,
5p are provided. Of these, the inner two
The reinforcing ribs 5n, 5n of the
Disk rotor passing through the center between the bosses 5k, 5k on the exit side
It is formed parallel to the radial line L and has two outer complements.
The strong ribs 5p, 5p correspond to the disk rotor radial line L
Are formed in a direction orthogonal to.

The reinforcing ribs 5n and 5p are connected to the boss 5k.
A strength member that prevents bending deformation,
The reinforcing rib 5n parallel to the radial direction line L is attached to the boss 5k.
This disk radial load is supported, and the disk
The reinforcing rib 5p orthogonal to the data radial direction line L
It supports the load on the disk in the circumferential direction. Also,
Hole 5h at a depth from the bridge portion 5c to the action portion 5a.
Formed and penetrates through the bridge portion 5c to reach the female thread portion 5i
Connect the connecting bolt 7 formed to the length to the bottom side of the bolt hole 5h.
Screw into the threaded part 5i to form it on the working part 5a
As a result, the tightening torque of the connecting bolt 7 is
i acts as a rigid force on the bottom wall 5m.
By connecting these reinforcing ribs 5n and 5p to m
Ri, reinforcing Li blanking 5n, tightening torque of 5p a connecting bolt 7
Is supported by the bottom wall 5m reinforced with
A high rigidity is obtained for the bushings 5n and 5p. Therefore,
The guide hole 5j is positioned between the outer periphery of the disk rotor and the disk rotor.
To the caliper body 5
Despite being formed in a disk, the disk has increased rigidity
The reinforcing rib 5n parallel to the rotor radial direction line L
Since the boss 5k of j is supported, the caliper
The deformation of the guide hole 5j caused by the C-shaped deformation of the body 5
Prevent as much as possible and ensure that the caliper body 5 slides smoothly.
Keep.

Each friction pad 6 is located on the side of the disk rotor 2.
A lining 6a that is in sliding contact with the surface;
And a back plate 6b made of metal. Working part 5a
The friction pad 6 on the side is a pad device of the caliper bracket 3.
The friction pad 6 on the attachment recess 3a and the reaction portion 5b side
The torque receiving projections 5q bulged inside the reaction portion 5b,
5q, each of which has an action portion 5a and a reaction portion 5
b on the two hanger pins 11 and 11
When it is suspended so that it can move in the axial direction of the disk rotor,
First, the hanger pins 11 and 11 and the ceiling opening 12 are engaged.
The pad spring 13 is attached to the disk rotor.
It is bounced toward the heart.

[0021]

[Effect of the invention] As described above, the present invention
A working part side piece having a joint part and a working part, and a reaction part
And the reaction part side piece having
Into the bolt holes in the axial direction of the disk rotor
Screw the connection bolts from the base to connect both pieces together
Divided caliper body,
Guides provided on each of the crawler inlet and outlet sides
The boss of the screw hole is more disc than the bottom wall of the bolt hole.
Protruding toward the rotor side, between the working portion and the disk rotor
Anti-disk rotor from the caliper bracket
Insert the slide pin projected in the direction into the guide hole
And a vehicle supported to be movable in the axial direction of the disk rotor.
Pin slide type caliper body for dual use disc brake
In the above, the guide hole is larger than the outer peripheral edge of the disk rotor.
Disposed radially inside the disc rotor,
The female thread is formed at least in the working portion, and
Linking Bolts are formed from the bridge to the internal thread
And extend from the bottom wall outer surface of the bolt hole to the boss of the guide hole.
Insert the strong rib between the bosses on the disk rotor inlet and outlet sides.
Formed parallel to the disk rotor radial line passing through the center of the
As a result, the tightening torque of the connecting bolt is
Acting as a rigid force on the bottom wall of the part,
Supports the bottom wall reinforced by the connecting bolt tightening torque.
As a result, a high rigidity is obtained for the reinforcing ribs.
Therefore, the guide hole is smaller than the outer peripheral edge of the disk rotor.
Disposed radially inside the disc rotor to secure the caliper body
Despite having been made compact, the rigidity has increased.
Since the reinforcing ribs support the boss of the guide hole,
The distance from the bolt hole to the bottom wall outer surface is long.
The tightening torque of the connecting bolt to be
As compared to the conventional caliper body that does not act on the wall, the braking
Guide caused by the C-shaped deformation of the caliper body due to force
Prevents hole deformation as much as possible, ensuring smooth sliding of the caliper body.
Can be secured.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional plan view of a disc brake showing an embodiment of the present invention.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc brake 2 ... Disc rotor 3 ... Caliper bracket 4 ... Slide pin 5 ... Caliper body 5a ... Working part 5b ... Reaction part 5c ... Bridge part 5d ... Working part side piece 5e ... Reaction part side piece 5f ... Cylinder hole peripheral wall Disk rotor outer peripheral side surface 5g Rib 5h Bolt hole 5i Female thread portion 5j Guide hole 5k Boss portion 5m Bottom wall 5n of bolt hole 5h Disk boss portions 5k on the disk rotor inlet side and outlet side.
Parallel to the disk rotor radial line L passing through the center between 5k
Reinforcing ribs 5p: Reinforcing ribs perpendicular to the disk rotor radial line L
Bed 6 ... friction pad 7 ... connecting bolts 8: cylinder bore

Claims (1)

(57) [Scope of request for utility model registration] An operating part and a reaction part which are arranged on both sides of a disk rotor so as to face each other, and these two parts are connected to a disk rotor.
A bridge portion that straddles and connects the outer periphery.
And a reaction part side piece having the action part and the reaction part
And a reaction portion side piece having a portion.
Of the disk rotor shaft formed on the
Screw the connecting bolt from the reaction piece on the reaction hole
A caliper body for connecting the two pieces together, wherein a disc rotor side is opened in the action portion and a piston is provided in a cylinder hole provided in a disc rotor axial direction.
Tongue so as to be liquid-tight and movable and surround the cylinder hole.
On the outer peripheral side of the disk rotor on the peripheral wall of the cylinder bore
A rib is formed in the axial direction of the scroller to sandwich the cylinder hole.
Of the disk rotor inlet and outlet sides of the
Les, the disk rotor axis direction and opens the disc rotor side
The boss portion of the guide hole provided in the direction protrudes from the bottom wall of the bolt hole on the side opposite to the disk rotor , and is fixed to the vehicle body.
By inserting a slide pin projecting in the direction opposite to the disk rotor from a caliper bracket disposed between the action portion and the disk rotor into the guide hole, the slide pin is movable in the disk rotor axial direction. in the pin slide type caliper body of a vehicular disk brake that is supported, the moth
The hole is half of the disk rotor than the outer edge of the disk rotor.
Arranged radially inward to reduce the number of female threads in the bolt holes
And the connecting bolt is formed on the action portion.
Shaped to the length that passes through the bridge part and reaches the female thread part
The boss of the guide hole from the bottom wall outer surface of the bolt hole.
The reinforcing ribs extending over the disk rotor are inserted into
Disk rotor radial line passing through the center between the output bosses
A pin slide type caliper body for a disc brake for a vehicle, wherein the caliper body is formed in parallel with the above.