JP3151647B2 - Pin slide type 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 disk brake for a vehicle mounted on an automobile, and more particularly, to a pair of slide pins for guiding a caliper body in a disk axial direction.
The present invention relates to a disc brake having a structure directly attached to an attachment portion of a vehicle body.

[0002]

2. Description of the Related Art A pin-sliding type disc brake that performs a braking action by moving a caliper body in a disc axial direction with a pair of slide pins is provided with a caliper bracket fixed to a caliper mounting portion of a vehicle body. In addition to supporting the caliper body via the slide pin, there is a so-called integral type in which the slide pin is directly attached to the caliper mounting part of the vehicle body.The omission of the caliper bracket reduces the number of parts, reduces the unsprung load, In addition, the steering stability is improved by reducing the unsprung load (for example, actual open flat 1-1).
No. 68030).

[0003]

However, in the integral type described above, the braking torque of the friction pad generated by sliding contact with the disk rotor acts on the caliper body, and particularly the reaction portion separated from the caliper mounting portion of the vehicle body. Dragging and tilting the caliper body toward the disc exit side is applicable only to light vehicles such as light vehicles with small braking torque, and vehicles and heavy vehicles that generate large braking torque such as sports cars and race cars. Not suitable for vehicles. The caliper body is designed specifically for each vehicle type, and it was difficult to use a single caliper body for both light and heavy vehicles.

The present invention has been made in view of such circumstances, and it is an object of the present invention to omit a caliper bracket and to have a structure in which a slide pin is directly attached to a caliper mounting portion of a vehicle body. An object of the present invention is to provide a highly versatile pin-slide type vehicle disk brake that can be applied to vehicles having different weights and different braking torques.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a disk rotor having an action portion on one side thereof.
Caliper body with reaction parts arranged on each side
Is located on the one side in a pair of pin holes of the action portion
Protruded in the disc axis direction at the caliper mounting part of the car body
A pair of slide pins are respectively inserted to support movably in the disk axis direction, and the disk rotor is interposed.
Brake pad of the friction pad opposing between the
Luk is attached to the caliper body or the caliper
In a pin-slide type vehicle disk brake supported by a portion, an anti-disk rotor of the reaction portion is provided.
A support part arranged on one side and two parts arranged on one side part
Of the vehicle body and the outside of the disk rotor
Two connecting portions for connecting the bearing portion and the vehicle body mounting portion
A rigid member having
Both body mounting parts can be removed with set screws.
Is fixed by tightening the said reacting portion and projecting the either one guide pin of the bearing, and bored the other in the guide hole, and inserting the guide pins slidably in the guide hole It is characterized by .

[0006] before Symbol set screw can be used also by the slide pin. Further, the guide hole is provided in the support portion, and the reaction portion has a through hole in the disk axial direction that opens toward the disk rotor side, and a storage recess that is recessed in the through hole direction on the disk rotor side of the through hole. Continuously, the guide pin is a pin with a head having a large head at one end of a shaft portion, and the shaft portion of the guide pin is inserted into the through hole,
The head of the guide pin may be accommodated in the accommodation recess while the tip end of the shaft is inserted into the guide hole of the support part.
Good.

[0007]

The disk brake according to the present invention thus constructed
In the key of the caliper body, when the rigid member is used, the movement of the reaction portion in the axial direction of the disc is guided by the slide fit between the guide pin and the guide hole. In the reaction section, the braking torque tends to greatly deform the working section on the vehicle body mounting side in the disc unwinding direction. However, the sliding fit between the guide pin and the guide hole suppresses the tilting of the reaction section as much as possible. Can be mounted on a heavy vehicle having a large braking torque.

[0008] or, in a small lightweight vehicle of the braking torque,
Even if this rigid member is removed, the integral type
It can be mounted on a vehicle as a disc brake having the above function, and the number of parts and the unsprung load can be reduced .

Furthermore, by also serves as a slide pin set screw for Me fastened, omission of assembly man-hours and reduction in the number of components can be reduced. Also, the reaction part of the caliper body
Disc axial through hole opening to disc rotor side
And a recess recessed in the direction of the through hole on the disk rotor side of the through hole.
The guide recess is connected to the recess, and the shaft of the guide pin is
The rigid member is inserted through the through hole and the distal end side of the shaft portion is
Through the guide holes of the
By storing the head in the storage recess of the reaction part,
Since the head of the guide pin in the recess is prevented from coming off by the friction pad on the reaction part side, the processing of the guide pin and through hole is rough, and press fitting, screw cutting, welding, etc. for fixing the guide pin are required. fixed means that the Do not required.

[0010]

EXAMPLES Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The pin-slide type disc brake 1 is located near one side of the disc rotor 2 rotating in the direction of arrow A,
An integrator in which a pair of slide pins 3, 3 protrude from the caliper mounting portions 4a, 4a of the vehicle body 4 in the direction opposite to the disk, and the caliper body 5 is supported by both slide pins 3, 3 so as to be movable in the disk axis direction. A pair of friction pads 6 and 6 are opposed to each other between a working portion 5a and a reaction portion 5b of a caliper body 5 which are arranged on both sides of the disk rotor 2 and are opposed to each other.

The caliper body 5 is provided with the above-described action portion 5a.
In addition, a caliper base 5d integrally formed with a bridge portion 5c disposed over the outside of the disk rotor 2 and the above-described reaction portion 5b formed in a plate shape are connected by four connection bolts 7. It has become.

The action portion 5a has a cylinder hole 8 at the center opening to the disk rotor side, vehicle body mounting arms 5e and 5e projecting to the left and right sides, and a union hole 9 opening to the bottom outer surface of the cylinder hole 8. A bleeder hole (not shown) is provided, and a horizontal rectangular ceiling opening 1 is formed in the bridge portion 5c.
0 is provided. A cup-shaped piston 11 is liquid-tightly and movably inserted into the cylinder hole 8, and a hydraulic chamber 12 is defined between the cylinder hole 8 and the bottom of the piston 11.
The union hole 9 and the bleeder hole communicate with the hydraulic chamber 12, and the hydraulic fluid pressurized by a separate hydraulic master cylinder is
The piston 11 is introduced into the hydraulic chamber 12 through the union hole 9.
Is moved forward in the direction of the opening of the cylinder hole 8, and the air mixed in the working fluid is discharged to the outside by loosening the bleeder screw 13 screwed into the bleeder hole.

A pin hole 5f is formed in each of the vehicle body mounting arms 5e, 5e in the axial direction of the disk. The above-described slide pin 3 has a shaft portion 3 longer than the pin hole 5f.
a has a large head 3b at the base end and a screw 3c at the tip, and the slide pin 3 has a sleeve 1
4, the shaft portion 3a and the sleeve 14 are inserted integrally into the pin hole 5f of the vehicle body mounting arm 5e.
The distal end side of the shaft portion 3a projecting from the
Through the through hole 15d formed in the vehicle body mounting portion 15a, and while holding the vehicle body mounting portion 15a between the sleeve 14 and the caliper mounting portion 4a of the vehicle body 4, connect the male screw 3c at the tip of the shaft portion 3a to the caliper. It is screwed into the female screw hole 4b of the mounting portion 4a and mounted on the vehicle body 4.

Each friction pad 6 includes a lining 16 which is in sliding contact with the side surface of the disk rotor 2 and a metal back plate 17 which is joined to the lining 16. Working part 5
The friction pad 6 on the a side is provided with the caliper mounting portion 4 of the vehicle body 4.
a, 4a, the friction pad 6 on the reaction portion 5b side is disposed between the pad mounting recesses 5g, and the two hanger pins 18, which are bridged between the action portion 5a and the reaction portion 5b. At 18, the disk is suspended so as to be movable in the axial direction of the disk, and is repelled toward the center of the disk by pad springs 19 which are engaged with the hanger pins 18, 18 and the ceiling opening 10.

The rigid member 15 is mounted on the caliper mounting portions 4a, 4a of the vehicle body 4 by slide pins 3.
The parts 15a, 15a are removably fastened together and attached to the vehicle body 4.
It is fixed so that it can be removed.
a, 15a, a support portion 15b having an L-shaped cross section disposed along the side opposite to the disk rotor of the reaction portion 5b, and a support portion 15b straddling the outside of the disk rotor 2 while sandwiching both sides of the bridge portion 5c. Ends and two vehicle body mounting parts 15
a, 15a formed on a frame body including two connecting portions 15c, 15c connecting the
b and the bridge portion 5c are connected to the support portion 15b and the connecting portion 15c,
15c.

A guide hole 15 is provided at the center of the bearing 15b.
e is formed to penetrate in the axial direction of the disk, and a shaft portion 20a of a guide pin 20 protruding from the reaction portion 5b is slidably inserted into the guide hole 15e. At the center of the reaction portion 5b, a bulging portion 5h bulging toward the side opposite to the disk rotor is provided, and a through hole 5i is formed through the bulging portion 5h in the axial direction of the disk. The recess on the rotor side is a storage recess 21.

The above-mentioned guide pin 20 is a pin with a head having a large head 20d at the base end of a shaft portion 20a composed of a small diameter portion 20b on the front end side and a middle diameter portion 20c on the base end side. After the pin 20 is inserted into the through hole 5i with the middle diameter portion 20c and the head 20d is received in the storage recess 21, the pin 20 is prevented from coming off by the friction pad 6 on the reaction portion side, and projects from the through hole 5i. 20b is slidably inserted into the guide hole 15e of the rigid member 15, and the distal end side of the small diameter portion 20b is projected from the guide hole 15e to the side opposite to the disk rotor. As a result, the reaction portion 5b far away from the slide pins 3 and 3 serving as a support member of the caliper
Supported by Incidentally, the projecting amount of the small diameter portion 20b projecting from the guide hole 15e to the side opposite to the disk rotor is:
Even when the linings 16, 16 of the friction pads 6, 6 are fully worn, the length is set to a length capable of maintaining the fitted state with the guide hole 15e.

This embodiment is configured as described above.
When the pressurized hydraulic fluid is supplied to the hydraulic chamber 12 of the caliper body 5 by the driver's braking operation, the hydraulic chamber 12 expands, and the piston 11 moves forward through the cylinder hole 8 in the direction of the opening. 11 pushes the friction pad 6 on the action portion side, and presses the lining 16 of the pad 6 against one side surface of the disk rotor 2. The caliper body 5 moves in the direction of the acting portion 5a by the reaction while the action portion 5a is guided by the slide pins 3 and 3 and the reaction portion 5b is guided by the guide pin 20, and the reaction portion 5b is moved to the friction pad on the reaction portion side. 6, the lining 16 of the pad 6 is pressed against the other side surface of the disk rotor 2.

The friction pads 6, 6 at the time of braking are slid in the direction of arrow A by the braking torque generated by sliding contact with the disk rotor 2, and the back plate 17 is located on the disk feeding side on the action portion 5a side. the side surface of the caliper mounting portion 4a of the vehicle body 4, also in the reacting portion 5b side, also the back plate 17 is disk
The caliper body 5 is supported on the side surface of the pad mounting recess 5g of the caliper body 5 located on the side of the tapping. The braking torque is transmitted to the caliper body 5 from the friction pad 6 on the reaction portion side, so that the reaction portion 5b is more greatly deformed toward the disk exit side than the action portion 5a. This minimizes this.

As described above, the disc brake 1 of this embodiment is
Is an integral type in which the slide pins 3, 3 are directly attached to the caliper mounting portions 4a, 4a of the vehicle body 4, but the rigid member 15 for supporting the reaction portion 5b and the guide pins 20 allow the caliper body 5 to be driven by the braking torque. Since the tilting is effectively suppressed, the present invention can be applied to a heavy vehicle such as a sports car, a race car, and a large car that generates a large braking torque. Further, the caliper body 5 can be favorably moved in the disk axial direction, and at the same time, uneven wear of the lining 16 due to the tilting of the caliper body 5 can be suppressed as small as possible.

Further, the slide pin 3 is provided between the caliper mounting portion 4a of the vehicle body 4 and the vehicle body mounting portion 15 of the rigid member 15.
also serves as a co-tighten with a, is economical and Hakare is omitted assembly man-hours and reduction in the number of components. In addition, rigid member 1
For a lightweight vehicle such as a mini vehicle that does not require reinforcement by the guide pins 5 and the guide pins 20, the rigid member 15 is removed, so that the remaining members of the disc brake 1 can be used as they are as the integral type original configuration. It is possible, and the types of brakes that have been set for each model can be greatly reduced, so the economic effect is extremely high.

The guide pin 20 of the present embodiment is
By accommodating Od in the accommodating recess 21 recessed in the support portion 15b of the rigid member 15, the Od is prevented from coming off by the friction pad 6 on the reaction portion side, so that press fitting, screw cutting, welding, etc. for fixing the guide pin 20 are performed. Can be eliminated, and the guide pin 20 and the through hole 5i can be manufactured roughly.

The disc brake according to the present invention has the above-described construction.
As explained in the example, omit the caliper bracket,
Insert the slide pin directly into the caliper mounting
The rigid member wears while adopting the untegral type.
Apply to vehicles with different braking torque and vehicle weight
can do. Also use the caliper bracket.
For disc brakes, use the caliper bracket on the
It is difficult to support the reaction part with large behavior with
However, in the present invention, a reaction occurs between the rigid member and the guide pin.
Supports the part, effectively preventing the caliper body from tilting
can do. In addition, with caliper bracket type
Can be omitted if you omit the caliper bracket
Although it does not form a body as a brake, the present invention is a rigid member
Function as a disc brake even if you omit
Use of components in lightweight vehicles with low braking torque
it can.

The guide pin and the guide hole of the present invention are keyed.
The bearing portion of the reaction section and the rigid members of Yaripabodi, upper
It may be provided in the reverse relationship to the above-described embodiment, and
For fixing, press-fitting, screwing, welding, bonding, etc.
Or, in appropriate combination, project directly to the reaction part or bearing part
May be. Caliper mounting part of vehicle body and rigid member
Separate from the slide pin for co-fastening with the body mounting part of
Of the caliper mounting part or the body mounting part
Screw directly into the female screw hole or combine with the nut.
May be used.

[0025]

【The invention's effect】 The present invention relates to a two-piece structure provided on a rigid member.
One body mounting part to the caliper mounting part of the vehicle
Rigid member that is removably fastened together with set screws.
And the rigid member is attached to the caliper
Bearings installed on the disk reaction side of the disk reaction part
Part, straddling the outside of the disk rotor, and
Providing two connecting portions for connecting the vehicle body mounting portion,
A guide pin protrudes from either the reaction section or the support section.
And a guide hole is drilled in the other, and the guide hole is inserted into the guide hole.
By inserting the id pin slidably, large
By using a rigid member for the braking torque,
Enables the caliper body to tilt in the disc eject direction
Sports cars that require large braking torque
Cars, race cars, and heavy vehicles such as large vehicles.
Use is possible.

[0026] The rigid member and the guide pin are used to supplement the rigid member.
For light vehicles with low braking torque, such as light vehicles that do not require strong strength
By removing the rigid member,
Functions as a disc brake with the original configuration of Ip
Can be used as it is, and for each model
Can greatly reduce the types of brakes
The economic effect is very high. In addition, by suppressing tilting,
Move the caliper body well in the disk axis direction.
At the same time, due to tilting of the caliper body.
Uneven wear of the inning can be suppressed as small as possible.

As the above-mentioned set screw, a slide pipe
By using components, the number of parts can be reduced and
Can be omitted and it is economical. Further, the guide hole is rigid
Provided bearing sexual members, the reacting portion of the caliper body
Has a disk axial direction opening toward the anti-disk rotor side.
A through hole, and a disc rotor side of the through hole in a direction of the through hole.
A recessed storage recess is provided in series, and the guide pin is
A headed pin with a large head at the end
The shaft of the shaft is inserted through the through hole, and the front end of the shaft is
Insert the guide hole into the support
Of the reaction part side
Guide pins can be retained by pads
Press-fitting to fix the guide pin
No need for fixing means such as cutting and welding
Pins and through holes are rough and can be easily manufactured.

[Brief description of the drawings]

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

FIG. 2 is a sectional front view taken along the line II-II of FIG. 1;

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

DESCRIPTION OF SYMBOLS 1 ... Disc brake, 2 ... Disc rotor, 3 ... Slide pin also serving as a set screw for fixing together the caliper mounting portion 4a and the vehicle body mounting portion 15a, 3a ... Shaft portion, 3b
... Head, 3c ... Male thread at the tip of shaft 3a, 4 ... Body, 4a
... Caliper mounting part of vehicle body 4, 5 ... Caliper body, 5
a: action portion of caliper body 5, 5b: reaction portion of caliper body 5, 5e: body mounting arm, 5f: pin hole, 5
g: pad mounting recess, 5h: bulging part , 6 : friction pad,
8 ... Cylinder hole, 9 ... Union hole, 11 ... Piston, 1
2: hydraulic chamber, 14: sleeve, 15: rigid member, 1
5a: Attached portion of the rigid member 15 to the vehicle body, 15b: Support portion, 15c: Connection portion, 15d: Through hole of the vehicle body attachment portion 15a, 15e: Guide hole, 16: Lining of the friction pad 6, 17: Back of the friction pad 6 Board, 18 ... hanger pin,
20: guide pin, 20a: small diameter portion 20b and medium diameter portion 20
c, a shaft portion, 20d ... head of the guide pin 20, 2
Storage concave portion for accommodating the head 20d of 1 ... guide pin 20

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-1555928 (JP, A) JP-A-63-190939 (JP, A) JP-A-60-158034 (JP, U) JP-A Sho 62- Microfilm (JP, U) photographing the contents of the specification and drawings attached to the application form No. 183736 (Japanese Utility Model Application No. 1-87342) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16D 55 / 224 106 F16D 65/02

Claims (3)

(57) [Claims] An action portion is provided on one side of a disk rotor.
Caliper body with reaction parts arranged on each side
Is located on the one side in a pair of pin holes of the action portion
Protruded in the disc axis direction at the caliper mounting part of the car body
A pair of slide pins are respectively inserted to support movably in the disk axis direction, and the disk rotor is interposed.
Brake pad of the friction pad opposing between the
Luk is attached to the caliper body or the caliper
In a pin-slide type vehicle disk brake supported by a portion, an anti-disk rotor of the reaction portion is provided.
A support part arranged on one side and two parts arranged on one side part
Of the vehicle body and the outside of the disk rotor
Two connecting portions for connecting the bearing portion and the vehicle body mounting portion
A rigid member having
Both body mounting parts can be removed with set screws.
A guide pin is protruded on one of the reaction portion and the support portion, and a guide hole is drilled on the other, and the guide pin is slidably inserted into the guide hole. A disc brake for a pin slide type vehicle, characterized by the following. 2. The disk brake according to claim 1, wherein the set screw is the slide pin. 3. The guide hole is provided in the bearing portion, and the reaction portion is provided with a through hole in the axial direction of the disk opening toward the disk rotor side, and a storage recessed in the through hole direction on the disk rotor side of the through hole. The guide pin is a headed pin having a large head at one end of a shaft portion, and the shaft portion of the guide pin is inserted through the through-hole to form a tip of the shaft portion. The pin-sliding type vehicle disc brake according to claim 1 or 2, wherein a side of the guide pin is inserted into a guide hole of the support portion, and a head of the guide pin is accommodated in the accommodation recess.