JP2023068773A - Disk brake for vehicle - Google Patents

Abstract

To support a disk turn-in side caliper support arm and a disk turn-out side caliper support arm by a connection body provided between a caliper bracket and a knuckle and to secure strength and rigidity of those caliper support arms.SOLUTION: A caliper bracket 7 comprises a disk turn-in side caliper support arm 7a and a disk turn-out side caliper support arm 7b comprising a torque reception part. A steering knuckle 2 is provided with a connection body 8 in one body, and the connection body 8 comprises a disk turn-in side connection part 8a connecting the disk turn-in side caliper support arm 7a and a lower arm connection part 2c, and a disk turn-out side connection part 8b connecting the disk turn-out side caliper support arm 7b and a damper connection part 2b. The disk turn-out side connection part 8b is provided with a knuckle-side connection part B1 more on a caliper bracket-side disk turn-in side than a caliper bracket-side connection part B2, and the disk turn-out side connection part 8b is provided with a knuckle-side connection part B3 more on a disk turn-out side than a caliper bracket-side connection part B4.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a vehicle disc brake, and more particularly to a vehicle disc brake in which a caliper body is attached to a knuckle via a caliper bracket.

Conventionally, a vehicle disc brake includes a knuckle that supports an axle, a disc rotor that is attached to the knuckle and rotates integrally with the wheel, a pair of friction pads that sandwich the side surface of the disc rotor for braking, and the friction pads. and a caliper bracket interposed between the caliper body and the knuckle.

The caliper brackets support the disk entry side and the disk exit side of the caliper body when the vehicle moves forward, and receive the braking torque generated during braking. Also, there is one in which the disc drive-in side caliper support arm and the disc drive-out side caliper support arm are connected to each other on the inner side of the vehicle body and on the outer side of the vehicle body (see, for example, Patent Document 1). Also, there is a knuckle body that supports an axle and a caliper bracket integrally formed therewith (see, for example, Patent Document 2).

Japanese Patent No. 2780178 Japanese Patent No. 4375969

The disc drive-in side caliper support arm and the disc run-out side caliper support arm of the caliper bracket of the vehicle disc brake described in Patent Documents 1 and 2 described above are properly configured so as to be able to receive braking torque satisfactorily. required strength and rigidity.

Accordingly, in the present invention, a connecting member provided between the caliper bracket and the knuckle supports the disc drive-in side caliper support arm and the disc run-out side caliper support arm. An object of the present invention is to provide a vehicle disc brake capable of ensuring the strength and rigidity of a caliper support arm.

In order to achieve the above object, the vehicle disc brake of the present invention comprises a knuckle that supports an axle of a wheel, a disc rotor that is attached to the knuckle so as to be rotatable integrally with the wheel, and both sides of the disc rotor. A caliper body having a pair of friction pads arranged facing each other, a piston for pressing the friction pads against the disc rotor, and a caliper bracket interposed between the caliper body and the knuckle. In the vehicle disc brake, the caliper bracket and the knuckle are connected via a connecting body integrally formed with either one of the caliper bracket and the knuckle, and the caliper bracket moves the caliper body forward with the vehicle. and a disk exit side caliper support arm for supporting the disk exit side of the caliper body when the vehicle moves forward. Each of the support arm and the disc drive-out side caliper support arm is provided with a torque receiving portion that abuts against the friction pad and receives braking torque during braking. and a disk exit-side connection portion that connects the disc exit-side caliper support arm and the knuckle, wherein the disc exit-side connection portion is provided on the knuckle side. The connecting portion is provided closer to the disc entry side than the connecting portion on the caliper bracket side, and the disc exit side connecting portion is provided on the knuckle side closer to the disc exit side than the connecting portion on the caliper bracket side. Characterized by

Further, it is preferable that the connecting body includes an intermediate connecting portion for connecting the knuckle and the caliper bracket between the disc drive-in side connecting portion and the disc running-out side connecting portion.

Further, the intermediate connecting portion is a first caliper support arm that connects an intermediate position of the knuckle corresponding to an intermediate position between the disc drive-in side connecting portion and the disc drive-out side connecting portion, and the disc drive-in side caliper support arm. It is preferable to provide an intermediate connecting member and a second intermediate connecting member that connects the intermediate position of the knuckle and the disc running-out side caliper support arm.

Further, the knuckle is a steering knuckle that includes a body portion that supports the axle, a damper connecting portion that projects to one side of the body portion, and a lower arm connecting portion that projects to the other side of the body portion, The disc drive-in side coupling portion is coupled to one of the damper coupling portion and the lower arm coupling portion, and the disc delivery side coupling portion is coupled to the other of the damper coupling portion and the lower arm coupling portion. good.

Further, the knuckle is a rear knuckle that includes a body portion that supports the axle, an upper arm connecting portion that projects to one side of the body portion, and a lower arm connecting portion that projects to the other side of the body portion. , the disc drive-in side connecting portion is connected to either one of the upper arm connecting portion or the lower arm connecting portion, and the disc coming-out side connecting portion is connected to the other of the upper arm connecting portion or the lower arm connecting portion. It is preferable that they are connected to each other.

According to the vehicle disc brake of the present invention, the disc drive-in side caliper support arm and the disc run-out side caliper support arm, to which braking torque is applied during braking, can be supported by the connector that connects the knuckle and the caliper bracket. . As a result, the strength and rigidity of the disc drive-in side caliper support arm and the disc drive-out side caliper support arm can be ensured, and the braking torque can be favorably received by the disc drive-in side caliper support arm and the disc drive-out side caliper support arm. can. Furthermore, the braking torque applied to the disc drive-in side caliper support arm and the disc drive-out side caliper support arm can be released by being transmitted to the connecting body and the knuckle. In addition, the disc drive-in side connecting portion of the connecting body is provided on the disc drive-in side with respect to the caliper bracket side connecting portion on the knuckle side, and the disc running-out side connecting portion is provided on the knuckle side connecting portion. By being provided closer to the disc exit side than the connecting part on the caliper bracket side, the disc entry side caliper support arm and the disc exit side caliper support arm are effective at the disc entry side connection part and the disc exit side connection part. can support

Furthermore, the strength and rigidity of the disc drive-in side connecting portion and the disc drive-out side connecting portion ensure that the disc drive-in side caliper support arm and the disc drive-out side caliper support arm receive braking torque satisfactorily. , Connects the inside of the vehicle body of the disc drive-in side caliper support arm and the disc drive-out side caliper support arm, which were conventionally provided to ensure the rigidity of the disc drive-in side caliper support arm and the disc drive-out side caliper support arm. It is now possible to omit tie bars or reduce the size of tie bars, thereby reducing the weight of the caliper bracket.

In addition, since the connecting body includes an intermediate connecting portion that connects the knuckle and the caliper bracket between the disc inlet side connecting portion and the disc outlet side connecting portion, the strength of the connection between the knuckle and the caliper bracket is increased. can be improved.

Further, the intermediate connecting portion includes a first intermediate connecting member that connects the intermediate position of the knuckle and the disc drive-in side caliper supporting arm, and a second intermediate connecting member that connects the intermediate position of the knuckle and the disc outlet side caliper supporting arm. By providing the intermediate connecting portion, the disc insertion side connecting portion and the disc exit side connecting portion can be well supported, and the strength of the connection between the knuckle and the caliper bracket can be improved.

Also, the knuckle is a steering knuckle that includes a damper connecting portion projecting to one side of a main body portion that supports a wheel, and a lower arm connecting portion projecting to the other side, and the disc drive-in side connecting portion is connected to the damper connecting portion. By connecting one of the lower arm connecting portions to one of the lower arm connecting portions and the disc coming-out side connecting portion to the other of the damper connecting portion and the lower arm connecting portion, respectively, a disc coming-in side caliper support arm to which braking torque is applied during braking. The disc drive-out side caliper support arm is supported by the disc drive-in side connecting portion and the disc drive-out side connection portion, so that the strength and rigidity of the disc drive-in side caliper support arm and the disc drive-out side caliper support arm can be secured. Braking torque can be well received. Furthermore, the braking torque applied to the disc drive-in side caliper support arm and the disc run-out side caliper support arm is transmitted to the disc drive-in side connecting portion, the damper connecting portion, the disc run-out side connecting portion, and the lower arm connecting portion. can escape.

Further, the knuckle is a rear knuckle provided with an upper arm connecting portion projecting to one side of a main body portion that supports the wheel and a lower arm connecting portion projecting to the other side, and the disc drive-in side connecting portion is the upper arm By connecting either the connecting portion or the lower arm connecting portion to one of the connecting portions, and the disc coming-out side connecting portion to the other of the upper arm connecting portion or the lower arm connecting portion, respectively, the disc coming-in side to which braking torque is applied during braking. The caliper support arm and the disk output side caliper support arm are supported by the disk input side connection portion and the disk output side connection portion, and the strength and rigidity of the disk input side caliper support arm and the disk output side caliper support arm are determined. can be ensured, and the braking torque can be favorably received. Furthermore, the braking torque applied to the disc drive-in side caliper support arm and the disc drive-out side caliper support arm is transmitted to the disc drive-in side connection portion, the upper arm connection portion, the disc drive-out side connection portion, and the lower arm connection portion. You can let it escape.

1 is a front view of a vehicle disc brake showing a first embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1; FIG. 4 is a front view of a vehicle disc brake showing a second embodiment of the present invention; FIG. 4 is a sectional view along IV-IV in FIG. 3; FIG. 11 is a front view of a vehicle disc brake showing a third embodiment of the present invention; FIG. 6 is a sectional view taken along line VI-VI of FIG. 5; FIG. 11 is a front view of a vehicle disc brake showing a fourth embodiment of the present invention; FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. 7;

1 to 8 are diagrams showing various embodiments of a vehicle disc brake according to the present invention. Arrow A indicates the direction of rotation of a disc rotor that rotates integrally with a wheel when the vehicle moves forward. And the disc retraction side is when the vehicle is moving forward. Further, the symbol FR shown in the figure indicates the front of the vehicle body, and the symbol UP indicates the upper part of the vehicle body.

FIGS. 1 and 2 show a vehicle disc brake 1 for the right front wheel, showing a first embodiment of this embodiment, including a steering knuckle 2 for supporting the axle of the front wheel, and a hub unit (not shown) attached to the steering knuckle 2. ), a pair of friction pads 4, 4 arranged opposite to both side surfaces of the disk rotor 3, and the friction pads 4 on the side surfaces of the disk rotor. and a caliper bracket 7 interposed between the caliper body 6 and the steering knuckle 2. The caliper bracket 7 is connected to the steering knuckle 2 via a connecting body 8 provided on the rear side of the vehicle body of the steering knuckle 2 . It is located on the rear side of the vehicle body.

The caliper body 6 is composed of an action portion 6a and a reaction portion 6b arranged on both sides of the disc rotor 3, and a bridge portion 6c connecting them across the outer edge of the disc rotor 3. , a cylinder hole 6d that opens toward the disk rotor 3 side, and reaction claws 6e, 6e are provided in the reaction portion 6b. The piston 5, which is cylindrical with a bottom, is accommodated in the cylinder hole 6d. The piston 5 moves through the cylinder hole 6d in the axial direction of the disc by hydraulic pressure supplied to a hydraulic chamber 6f defined at the bottom of the cylinder hole. It is designed to move. Further, slide pin mounting arms 6g, 6g are projected from the disk insertion side and the disk exit side of the action portion 6a, and a slide pin 6h is attached to the tip of each slide pin mounting arm 6g.

The caliper bracket 7 includes a disc drive-in side caliper support arm 7a and a disc run-out side caliper support arm 7b that support the disc drive-in side and the disc run-out side of the caliper body 6, and a disc drive-in side caliper support arm 7a. A tie bar 7c is provided to connect the vehicle body outer portion and the vehicle body outer side of the disc running-out side caliper support arm 7b. The disc drive-in side caliper support arm 7a and the disc drive-out side caliper support arm 7b are arranged to sandwich both sides of the caliper body 6 in the disc rotation direction, and are formed in a saddle shape straddling the outer circumference of the disc rotor 3. As shown in FIG. Pin insertion holes for slidably inserting the slide pins 6h are formed in the disc drive-in side caliper support arm 7a and the disc drive-out side caliper support arm 7b. The caliper body 6 is attached to the caliper bracket 7 via the pin 6h so as to be movable in the disk axial direction. Further, a U-shaped pad guide groove 7d is formed in each of the disc drive-in side caliper support arm 7a and the disc run-out side caliper support arm 7b. The outflow side surface 7e and the disc inflow side surface 7f of the pad guide groove 7d on the disc inflow side serve as torque receiving portions that receive braking torque from the friction pad 4 during braking.

The friction pad 4 includes a back plate 4a and a lining 4b attached to the disc rotor side of the back plate 4a. Ear strips 4c, 4c are protruded from both sides of the back plate 4a, and the ear strips 4c, 4c are respectively supported by the pad guide grooves 7d on the disc inlet side and outlet side so as to be movable in the disc axial direction. .

The steering knuckle 2 includes a cylindrical body portion 2a that rotatably supports the axle of the front wheel, a damper connecting portion 2b that projects upward from the body portion 2a, and a downward projecting portion from the body portion 2a. and a steering rod connecting portion 2d projecting forward from the body portion 2a. The disk rotor 3 having a substantially disk shape is fixed to the main body 2a via a hub unit so as to be rotatable integrally with the front wheel.

The connecting body 8 is formed integrally with the steering knuckle 2, and includes a disc insertion side connecting portion 8a that connects the disc insertion side caliper support arm 7a of the caliper bracket 7 and the lower arm connecting portion 2c of the steering knuckle 2, and the caliper bracket. 7 and the damper connecting portion 2b of the steering knuckle 2 are provided. The disc drive-in side connecting portion 8a protrudes rearward from the lower arm connecting portion 2c and is attached to the disc drive-in side caliper support arm 7a by a connecting bolt 9a. It is provided closer to the disc insertion side than the connecting portion B2 (the position of the connecting bolt 9a) with the entry-side caliper support arm 7a. Furthermore, the disk exit side connecting portion 8b projects from the damper connecting portion 2b toward the rear of the vehicle body, and is attached to the disk exit side caliper support arm 7b by a connecting bolt 9b. It is provided on the disk exit side of the connecting portion B4 (the position of the connecting bolt 9b) with the disk exit side caliper support arm 7b.

Further, between the disc drive-in side connecting portion 8a and the disc running-out side connecting portion 8b, a rear portion of the body portion 2a corresponding to an intermediate position between the disc drive-in side connecting portion 8a and the disc running-out side connecting portion 8b is provided. a first intermediate connecting member 8c that connects the intermediate position 2e on the side and the disc drive-in side caliper support arm 7a; is provided, and the connecting body 8 is formed in an M shape in a front view by a disk insertion side connection portion 8a, a disk exit side connection portion 8b, a first intermediate connection member 8c, and a second intermediate connection member 8d. .

In the vehicle disc brake 1 described above, when the driver performs a braking operation while the vehicle is moving forward, hydraulic fluid pressurized by a separate hydraulic master cylinder (not shown) is supplied to the hydraulic pressure chamber 6 f of the caliper body 6 . The hydraulic fluid supplied to the fluid pressure chamber 6f pushes the piston 5 toward the disc rotor 3, causing the friction pad 4 on the working portion side to slide against one side surface of the disc rotor 3, and then the caliper body 6 acts. , and the reaction claws 6e, 6e bring the friction pad 4 on the side of the reaction portion into sliding contact with the other side surface of the disk rotor 3, thereby effecting braking.

At this time, each friction pad 4 is dragged by the disc rotor 3, and one end surface of the back plate 4a abuts the disc run-out side surface 7e (torque receiving portion) of the pad guide groove 7d on the disc run-out side. As a result, a braking torque is applied to the disk exit side caliper support arm 7b. , the disc run-out side caliper support arm 7b can satisfactorily receive the braking torque. In addition, the braking torque can be released by being transmitted from the disk exit side caliper support arm 7b to the disk exit side connecting portion 8b and from the disk exit side connecting portion 8b to the damper connecting portion 2b.

On the other hand, when the driver performs a braking operation while the vehicle is moving in reverse, each friction pad 4 is dragged by the disc rotor 3, and the other end surface of the back plate 4a becomes the disc entry side surface 7f (torque receiving part). As a result, braking torque is applied to the disc drive-in side caliper support arm 7a, but the disc drive-in side caliper support arm 7a is supported by the disc drive-in side connecting portion 8a, ensuring strength and rigidity. Therefore, the braking torque can be favorably received by the disc drive-in side caliper support arm 7a. Further, the braking torque can be released by being transmitted from the disc drive-in side caliper support arm 7a to the disc drive-in side connecting portion 8a and from the disc drive-in side connecting portion 8a to the lower arm connecting portion 2c.

Further, in the disk entry side connection portion 8a of this embodiment, the connection portion B1 (knuckle side connection portion) with the lower arm connection portion 2c is the connection portion B2 (caliper bracket side connection portion) with the disk entry side caliper support arm 7a. The disc exit side connection portion 8b is provided closer to the disc entry side than the disc exit side caliper support arm 7b. , the disc drive-in side caliper support arm 7a and the disc run-out side caliper support arm 7b can be connected to the disc drive-in side connection. It can be effectively supported by the portion 8a and the disk exit side connecting portion 8b.

In addition, the connecting body 8 is provided between the disk insertion side connecting portion 8a and the disk exit side connecting portion 8b, and has a body portion corresponding to an intermediate position between the disk insertion side connecting portion 8a and the disk exit side connecting portion 8b. A first intermediate connecting member 8c that connects the intermediate position 2e of 2a and the disc drive-in side caliper supporting arm 7a, and a second intermediate connecting member 8d that connects the intermediate position 2e and the disc outlet side caliper supporting arm 7b. The steering knuckle 2 is formed in an M shape in front view by the disc drive-in side connecting portion 8a, the disc drive-out side connecting portion 8b, the first intermediate connecting member 8c, and the second intermediate connecting member 8d. and the caliper bracket 7 can be improved in connection strength.

Furthermore, since the coupling body 8 can ensure the rigidity of the disc drive-in side caliper support arm 7a and the disc drive-out side caliper support arm 7b, the rigidity of the disc drive-in side caliper support arm and the disc drive-out side caliper support arm is conventionally reduced. It is possible to omit the tie bar that connects the disc drive-in side caliper support arm and the disc drive-out side caliper support arm inside the vehicle body, which is provided for securing, so that the weight of the caliper bracket 7 can be reduced.

3 and 4 show a second embodiment of the vehicle disc brake 11 of the present invention, in which the same components as in the first embodiment are denoted by the same reference numerals, and the details thereof are shown. Description is omitted.

The connecting body 12 of this embodiment is formed integrally with the caliper bracket 7, and includes a disc insertion side connecting portion 12a for connecting the disc insertion side caliper support arm 7a and the lower arm connecting portion 2c of the steering knuckle 2, and a disc rotation side connecting portion 12a. A disk output side connection portion 12b that connects the output side caliper support arm 7b and the damper connection portion 2b of the steering knuckle 2, and a middle position 2e behind the vehicle body of the main body portion 2a and the disk input side caliper support arm 7a are connected. and a second intermediate connecting member 12d for connecting the intermediate position 2e and the disc running-out side caliper support arm 7b, which are formed in an M shape when viewed from the front.

The disc drive-in side connecting portion 12a protrudes forward from the disc drive-in side caliper support arm 7a and is attached to the lower arm connecting portion 2c by a connecting bolt 9c. ) is provided on the disk insertion side of the connection portion C2 between the disk insertion side caliper support arm 7a and the disk insertion side connection portion 12a. Further, the disc running-out side connecting portion 12b protrudes forward from the disc running-out side caliper support arm 7b, is attached to the damper connecting portion 2b by a connecting bolt 9d, and is connected to the damper connecting portion 2b at a connecting portion C3 (connecting portion C3). The position of the bolt 9d) is provided on the disk exit side of the connection portion C4 between the disk exit side caliper support arm 7b and the disk exit side connection portion 12b. Also, the first intermediate connecting member 12c and the second intermediate connecting member 12d are connected to the intermediate position 2e by a connecting bolt 10a.

In Embodiments 1 and 2, the connecting body 8 or the connecting body 12 is provided on the vehicle body rear side of the steering knuckle 2, but the present invention is not limited to this, and the steering knuckle 2 on the vehicle front side of the connecting body 8 or 12 is provided. The present invention can also be applied to a configuration in which the connecting body 12 is provided and the caliper body 6 is arranged on the front side of the vehicle body of the disk rotor 3 via the connecting body 8 or the connecting body 12 and the caliper bracket 7 .

5 and 6 show a vehicle disc brake 21 according to a third embodiment of the present invention, in which components similar to those of the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are given. Description is omitted.

The vehicle disc brake 21 of this embodiment is a disc brake for the left rear wheel, and includes a rear knuckle 22 that supports the axle of the rear wheel, and is attached to the rear knuckle 22 via a hub unit so as to be rotatable integrally with the rear wheel. a disc rotor 3, a pair of friction pads 4, 4 for braking the rear wheel by sandwiching the side surface of the disc rotor 3, a caliper body 6 having a piston 5 for pressing the friction pad 4 against the side surface of the disc rotor, and a caliper body. 6 to the rear knuckle 22 , and the caliper bracket 7 is connected to the rear knuckle 22 via a connecting body 23 .

The rear knuckle 22 includes a body portion 22a that rotatably supports the axle of the rear wheel, upper arm connecting portions 22b and 22b, a lower arm connecting portion 22c, trailing arm connecting portions 22d and 22d, and a control arm connecting portion 22e. , 22e. The body portion 22a is formed in a substantially rectangular shape with an axle support portion 22f in the center. protrudes downward from the vehicle body rear lower portion of the main body portion 22a. Further, the trailing arm connecting portions 22d, 22d project forward from the body portion 22a toward the front of the vehicle body, and the control arm connecting portions 22e, 22e project downward from the vehicle body front lower portion of the body portion 22a. Protruding.

The connector 23 is formed integrally with the rear knuckle 22, and serves as a disk exit side connection that connects the disk exit side caliper support arm 7b of the caliper bracket 7 and the upper arm connection portion 22b of the rear knuckle 22 on the rear side of the vehicle body. a disk entry side connecting portion 23b that connects the disk entry side caliper support arm 7a of the caliper bracket 7 and the lower arm connection portion 22c of the rear knuckle 22;

The disc running-out side connecting portion 23a protrudes rearward from the vehicle body rear upper arm connecting portion 22b, is attached to the disc running-out side caliper support arm 7b by a connecting bolt 9e, and is connected to the upper arm connecting portion 22b. The portion D1 is provided closer to the disk exit side than the connecting portion D2 (the position of the connecting bolt 9e) with the disk exit side caliper support arm 7b. The disc drive-in side connecting portion 23b projects upward from the lower arm connecting portion 22c and is attached to the disc drive-in side caliper support arm 7a by a connecting bolt 9f. It is provided closer to the disk insertion side than the connecting portion D4 (the position of the connecting bolt 9f) with the entry-side caliper support arm 7a. Furthermore, between the disk exit side connecting portion 23a and the disk insertion side connecting portion 23b, there is a rear portion of the main body portion 22a corresponding to an intermediate position between the disk exit side connecting portion 23a and the disk insertion side connecting portion 23b. A first intermediate connecting member 23c that connects the side intermediate position 22g and the disc drive-out side caliper support arm 7b, and a second intermediate linking member 23d that connects the intermediate position 22g and the disc drive-in side caliper support arm 7a. The connecting body 23 is formed in an M-shape in a front view by a disk output side connecting portion 23a, a disk input side connecting portion 23b, a first intermediate connecting member 23c, and a second intermediate connecting member 23d.

This embodiment is formed as described above, so that even if it is a disc brake for the rear wheels, it is similar to the disc brake for the front wheels, as is the disc drive-in side caliper support arm 7a and the disc drive-in side caliper support arm 7a to which braking torque is applied during braking. Since the disk exit side caliper support arm 7b is supported by the disk exit side connection portion 23a and the disk exit side connection portion 23b, the strength and the strength of the disk exit side caliper support arm 7a and the disk exit side caliper support arm 7b Rigidity can be ensured, and braking torque can be favorably received by the disc drive-in side caliper support arm 7a and the disc run-out side caliper support arm 7b. Further, the braking torque applied to the disc drive-in side caliper support arm 7a and the disc drive-out side caliper support arm 7b is controlled by the disc drive-out side connecting portion 23a, the upper arm connecting portion 22b, the disc drive-in side connecting portion 23b, It can be released by being transmitted to the lower arm connecting portion 22c.

FIGS. 7 and 8 show a vehicle disc brake 31 showing a fourth embodiment of the present invention, in which constituent elements similar to those of the first and third embodiments are denoted by the same reference numerals, respectively. Therefore, detailed description is omitted.

The connector 32 of the present invention is integrally formed with the caliper bracket 7, and includes a disc drive-in side connecting portion 32b for connecting the disc drive-in side caliper support arm 7a and the lower arm connecting portion 22c of the rear knuckle 22, and a disc drive-out side connecting portion 32b. A disk exit-side connection portion 32a that connects the side caliper support arm 7b and an upper arm connection portion 22b on the rear side of the vehicle body of the rear knuckle 22, an intermediate position 22g on the rear side of the vehicle body of the body portion 22a, and a disk exit-side caliper support. A first intermediate connecting member 32c that connects the arm 7b and a second intermediate connecting member 32d that connects the intermediate position 22g and the disc drive-in side caliper support arm 7a are provided. The connecting portion 32a, the disk insertion side connecting portion 32b, the first intermediate connecting member 32c, and the second intermediate connecting member 32d form an M shape in a front view.

The disc running-out side connecting portion 32a protrudes forward from the disc running-out side caliper support arm 7b, is attached to the upper arm connecting portion 22b at the rear of the vehicle body with a connecting bolt 9g, and is connected to the upper arm connecting portion 22b. E1 (the position of the connecting bolt 9g) is provided on the disk exit side of the connecting portion E2 with the disk exit side caliper support arm 7b. Further, the disc drive-in side connecting portion 32b projects downward from the disc drive-in side caliper support arm 7a, is attached to the lower arm connecting portion 22c by a connecting bolt 9h, and is connected to the lower arm connecting portion 22c at a connecting portion E3 (connection The position of the bolt 9h) is provided on the disk insertion side of the connecting portion E4 with the disk insertion side caliper support arm 7a. Also, the first intermediate connecting member 32c and the second intermediate connecting member 32d are connected to the intermediate position 22g by a connecting bolt 10b.

The present invention is not limited to the above embodiments, and the structure of the caliper body and the structure of the friction pads are arbitrary, and the structures of the steering knuckle and rear knuckle are also arbitrary. Furthermore, the connecting body may not have the first intermediate connecting member or the second intermediate connecting member. Furthermore, the present invention can also be applied to disc brakes for parking brakes.

DESCRIPTION OF SYMBOLS 1... Vehicle disc brake 2... Steering knuckle 2a... Main-body part 2b... Damper connection part 2c... Lower arm connection part 2d... Steering-rod connection part 2e... Intermediate position 3... Disc rotor 4... Friction pad , 4a... back plate, 4b... lining, 4c... tab, 5... piston, 6... caliper body, 6a... action part, 6b... reaction part, 6c... bridge part, 6d... cylinder hole, 6e... reaction claw, 6f: fluid pressure chamber 6g: slide pin mounting arm 6h: slide pin 7: caliper bracket 7a: disc drive-in side caliper support arm 7b: disc run-out side caliper support arm 7c: tie bar 7d: pad Guide groove 7e...Disc drive-out side surface 7f...Disc drive-in side surface 8...Connector 8a...Disc drive-in side connection part 8b...Disk drive-out side connection part 8c...First intermediate connection member 8d... second intermediate connecting member 9a to 9h connecting bolt 10a, 10b connecting bolt 11 vehicle disc brake 12 connecting body 12a disc inflow side connecting portion 12b disc outflow side connecting portion 12c... First intermediate connecting part 12d... Second intermediate connecting part 21... Vehicle disc brake 22... Rear knuckle 22a... Main body part 22b... Upper arm connecting part 22c... Lower arm connecting part 22d... Trailing Arm connecting portion 22e Control arm connecting portion 22f Axle support portion 22g Intermediate position 23 Connecting body 23a Disk output side connecting portion 23b Disk input side connecting portion 23c First intermediate Connection part 23d... Second intermediate connection part 31... Vehicle disc brake 32... Connection body 32a... Disc exit side connection part 32b... Disc entry side connection part 32c... First intermediate connection member 32d ... second intermediate connecting member

Claims (5)

a knuckle supporting the axle of the wheel;
a disc rotor attached to the knuckle so as to be rotatable integrally with the wheel;
a pair of friction pads arranged facing each side of the disk rotor;
a caliper body having a piston that presses the friction pad against the disc rotor;
a caliper bracket interposed between the caliper body and the knuckle;
In a vehicle disc brake comprising
The caliper bracket and the knuckle are connected via a connecting body integrally formed with either the caliper bracket or the knuckle,
The caliper bracket includes a disk entry side caliper support arm that supports the disk entry side of the caliper body when the vehicle moves forward, and a disk exit side caliper support arm that supports the disk exit side of the caliper body when the vehicle moves forward. and a torque receiving portion that contacts the friction pad and receives braking torque during braking is provided on each of the disc drive-in side caliper support arm and the disc drive-out side caliper support arm,
The connecting body includes a disk entry-side connection portion that connects the disk entry-side caliper support arm and the knuckle, and a disk exit-side connection portion that connects the disk exit-side caliper support arm and the knuckle. In the disk entry side connection portion, the knuckle side connection portion is provided closer to the disk entry side than the caliper bracket side connection portion, and in the disk exit side connection portion, the knuckle side connection portion is provided in the caliper bracket. A disc brake for a vehicle, wherein the disc brake is provided on the disc run-out side of the side connecting portion. 2. The connecting body includes an intermediate connecting portion for connecting the knuckle and the caliper bracket between the disc drive-in side connecting portion and the disc running-out side connecting portion. Disc brakes for the vehicles mentioned. The intermediate connecting portion is a first intermediate connecting portion that connects an intermediate position of the knuckle corresponding to an intermediate position between the disc drive-in side connecting portion and the disc drive-out side connecting portion and the disc drive-in side caliper support arm. 3. The vehicle disc brake according to claim 2, further comprising a member and a second intermediate connecting member that connects the intermediate position of the knuckle and the disc run-out side caliper support arm. The knuckle is a steering knuckle that includes a body portion that supports the axle, a damper connecting portion that projects to one side of the body portion, and a lower arm connecting portion that projects to the other side of the body portion, and the disc The drive-in side connecting portion is connected to one of the damper connecting portion and the lower arm connecting portion, and the disk exit side connecting portion is connected to the other of the damper connecting portion and the lower arm connecting portion. The vehicle disc brake according to any one of claims 1 to 3, characterized by: The knuckle is a rear knuckle that includes a main body portion that supports the axle, an upper arm connecting portion that protrudes from one side of the main body portion, and a lower arm connecting portion that protrudes from the other side of the main body portion. The disc drive-in side connecting portion is connected to one of the upper arm connecting portion and the lower arm connecting portion, and the disc coming-out side connecting portion is connected to the other of the upper arm connecting portion and the lower arm connecting portion. 4. The vehicle disc brake according to any one of claims 1 to 3, characterized in that:

Images