JP2016038028A - Brake disc - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake disc capable of reducing interference sound due to interference between coupling means and a bracket part or a disc part while maintaining relative movement of the bracket part and the disc part.SOLUTION: A brake disc 1 is attached to an axle of a vehicle and intended to brake the vehicle via a brake pad to be pressed. The brake disc 1 includes: a bracket part 2 attached to the axle of the vehicle; a disc part 3 against which the brake pad is pressed; and coupling means 4 for relatively movably coupling the bracket part 2 and the disc part 3. The brake disc 1 includes deformation means 8 that is deformable with relative movement of the bracket part 2 and the disc part 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a brake disc that is attached to an axle of a vehicle and brakes the vehicle by pressing a brake pad.

  As a brake device that is disposed in a vehicle such as a passenger car or a two-wheeled vehicle and can brake the vehicle, a disc brake device that includes a brake disk and a brake pad has come into widespread use. Such a disc brake device is configured to attach a brake disc to a wheel of a vehicle so as to be integrally rotatable, and to obtain a braking force by pressing a brake pad against the brake disc.

  As a conventional brake disc, there is a floating type in which a part attached to an axle of a vehicle and a part where a brake pad is pressed are divided. Such a floating brake disc is divided into a bracket portion attached to the axle of a vehicle and a disc portion to which the brake pad is pressed, and the bracket portion and the disc portion are connected by a connecting means, thereby the bracket portion. In contrast, the disk portion is structured to be relatively movable.

JP 2008-232441 A

  However, since the conventional floating brake disc described above has a configuration in which the bracket portion and the disc portion are connected to each other so as to be relatively movable by the connecting means, for example, when the vehicle is decelerated or stopped by performing a braking operation, it is not intended. The bracket part and the disk part move relative to each other, and the connecting means and the bracket part or the disk part interfere with each other, and an abnormal sound (interference sound due to interference between the connecting means and the bracket part or the disk part) is generated. There was a problem.

  The present invention has been made in view of such circumstances, and can maintain a relative movement of the bracket portion and the disc portion, and can suppress an interference sound due to interference between the connecting means and the bracket portion or the disc portion. To provide a disc.

  According to a first aspect of the present invention, there is provided a brake disc that is attached to a vehicle axle and brakes the vehicle by pressing a brake pad, a bracket portion attached to the vehicle axle, and a disc on which the brake pad is pressed. And a connecting means for connecting the bracket part and the disk part so that they can move relative to each other, and further comprising a deformation means that can be deformed along with the relative movement of the bracket part and the disk part. Features.

  According to a second aspect of the present invention, in the brake disk according to the first aspect, the deformation means includes a spring member attached to a connection portion between the bracket portion and the disk portion by the connection means, and the bracket portion and the disk portion. The spring member can be deformed with the relative movement of.

  According to a third aspect of the present invention, in the brake disk according to the second aspect, a plurality of the connection means are formed in the circumferential direction of the bracket portion and the disk portion, and the deformation means is provided at the connection portions of all the connection means. It is attached.

  According to a fourth aspect of the present invention, in the brake disc according to the second or third aspect, the pressing means is a spring member that is bent into a substantially C shape following the shape of the connecting portion of the bracket portion and the disc portion. It is characterized by comprising.

  According to the first aspect of the present invention, the deformation means that can be deformed with relative movement of the bracket portion and the disk portion is provided. Therefore, when the bracket portion and the disk portion are relatively moved, the deformation means is deformed so that the connection means is deformed. Can reduce the impact between the bracket part and the disk part, and suppress the interference sound caused by the interference between the connecting means and the bracket part or the disk part while maintaining the relative movement of the bracket part and the disk part. it can.

  According to the invention of claim 2, the deforming means is composed of a spring member attached to the connecting part of the bracket part and the disk part by the connecting means, and the spring member is deformed with relative movement of the bracket part and the disk part. Therefore, it is possible to suppress the interference sound due to the interference between the connecting means and the bracket part or the disk part while maintaining the relative movement of the bracket part and the disk part well.

  According to the invention of claim 3, a plurality of connection means are formed in the circumferential direction of the bracket part and the disk part, and the deformation means is attached to the connection parts of all the connection means. Interference sound due to interference with the disk portion can be more reliably suppressed.

  According to the invention of claim 4, since the deforming means is composed of a spring member bent into a substantially C shape following the shape of the connecting portion of the bracket portion and the disc portion, the mounting when the deforming means is attached to the brake disc. The work can be easily performed and can be easily applied to an existing brake disk.

The top view which shows the brake disc which concerns on embodiment of this invention II-II sectional view in FIG. Two views showing the insertion member of the connecting means in the brake disc Two views showing the color of the connecting means in the brake disc It is a figure which shows the disc spring of the connection means in the brake disk, (a) Top view (b) Longitudinal sectional view The enlarged view which shows the connection part vicinity by the connection means in the brake disc Plan view showing brake pads applied to the brake disc Sectional drawing which shows the brake pad applied to the brake disc Two views showing deformation means in the brake disc The top view for showing the operation | work which attaches the deformation means to a brake disc The 2nd page figure which shows the deformation | transformation means in other embodiment of this invention The top view for showing the operation | work which attaches the deformation means to a brake disc

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The brake disc according to the present embodiment is a member that is attached to a wheel of a vehicle such as a motorcycle and that can rotate integrally with the wheel, and that is configured to obtain a braking force by pressing a brake pad. 1 and 2, the bracket portion 2, the disc portion 3, the connecting means 4, and the deforming means 8 are configured. The brake disc 1 is made of a disk-shaped member having a front surface α and a back surface β.

  The bracket portion 2 is obtained by pressing a metal plate made of, for example, an aluminum alloy, and a plurality of mounting holes 2b are formed at predetermined positions. These mounting holes 2b are for inserting fastening means such as bolts and fixing the brake disc 1 to wheels (not shown) in a vehicle such as a motorcycle. In addition, the disk portion 3 is connected to the outer peripheral edge portion of the bracket portion 2 by connecting means 4 (floating pins), thereby constituting a disc-like brake disc 1 as an overall shape.

  The disk portion 3 is obtained by pressing a metal plate material such as stainless steel, and a plurality of drain holes a are formed at predetermined positions. These drain holes a are made of through holes formed in the disk portion 3, and are formed by, for example, punching, etc., and can improve heat dissipation by increasing the surface area, reduce the weight of the brake disk 1, and the like. Has been. The disk portion 3 is formed of a substantially annular member that can slide when the brake pad 9 (see FIGS. 7 and 8) is pressed, and the front surface α and the back surface β have improved wear resistance such as induction hardening. Surface treatment for is given.

  The brake pads 9 are made of a predetermined friction material, and are formed on a pair of pistons 11 held by a caliper 10 as shown in FIGS. Thus, when operating means such as a brake lever is operated, the brake fluid flows through the flow path b to displace the piston 11, and the brake pad 9 is pressed against the front surface α and the rear surface β of the disk portion 3 that rotates with the wheel to slide. It is configured to obtain a braking force by moving it.

  In the present embodiment, an opposed piston type having a pair of pistons 11 is applied, but other types (for example, the piston is disposed only on either one of the front and back surfaces of the brake disk 1, A type in which the caliper itself is displaced to the opposite side by the reaction force of the force pressing the brake pad, and the brake pad on the side without the piston is pressed against the brake disc 1 may be applied.

  The bracket portion 2 is formed with a plurality of connecting portions 2 a that are connected to the disk portion 3 by the connecting means 4, and the disk portion 3 is connected to the bracket portion 2 by the connecting means 4. Part 3a is formed. Specifically, as shown in FIG. 6, the connecting portion 2a of the bracket portion 2 is formed of a notch 2aa formed in a semicircular arc shape, and the connecting portion 3a of the disc portion 3 is formed in a semicircular arc shape. The bracket portion 2 and the disc portion 3 are connected by inserting the insertion member 5 (see FIG. 2) of the connecting means 4 into a portion formed by the notches 3aa and facing the notches 2aa and 3aa. It is comprised so that.

  The connecting means 4 is for connecting the bracket part 2 and the disk part 3 so that they can move relative to each other. As shown in FIG. 2, the insertion member 5, the collar 6, and the disc spring 7 (biasing means) are connected. It is configured. Note that there are a plurality of connecting means 4 according to the present embodiment in the circumferential direction (in the present embodiment, at a predetermined position of the brake disc 1 (the connecting position of the bracket portion 2 and the disc portion 3) at a substantially equal interval on a concentric circle. The bracket portion 2 and the disc portion 3 are connected to each other at each portion.

  The insertion member 5 is inserted and attached between the connecting part 2a of the bracket part 2 and the connecting part 3a of the disk part 3 (specifically, between the notch 2aa and the notch 3aa). As shown in FIG. 3, the portion 3 is made of a cylindrical member having a through hole 5d formed at the center thereof. Further, the insertion member 5 is disposed on the surface α side of the connection portion 2a of the bracket portion 2 and the connection portion 3a of the disk portion 3 in a state of being inserted between the connection portion 2a of the bracket portion 2 and the connection portion 3a of the disk portion 3. A flange portion 5a capable of contacting, an insertion portion 5b positioned between the wall surface of the notch 2aa of the connecting portion 2a and the wall surface of the notch 3aa of the connecting portion 3a, and a caulking tip portion 5c. It is configured.

  The collar 6 is attached to the distal end portion 5c side of the insertion member 5 inserted between the coupling portion 2a of the bracket portion 2 and the coupling portion 3a of the disk portion 3, and holds the disc spring 7, as shown in FIG. As shown, a flange portion 6a and a through hole 6b are formed. Specifically, as shown in FIG. 2, the collar 6 and the disc spring 7 are attached to the distal end portion 5 c side of the insertion member 5 inserted between the connection portion 2 a of the bracket portion 2 and the connection portion 3 a of the disk portion 3. Thereafter, the collar 6 can be attached in a state where the disc spring 7 is held by caulking the tip 5c.

  The disc spring 7 is attached to the insertion member 5 via the collar 6 and can abut against the back surface β side of the connecting portion 2a of the bracket portion 2 and the connecting portion 3a of the disc portion 3 to apply a biasing force. As shown in FIG. 5, the edge 7a and the through-hole 7b are formed. That is, the disc spring 7 is attached with the peripheral portion of the through hole 7b contacting the collar 6 and the edge portion 7a contacting the back surface β side of the connecting portion 2a of the bracket portion 2 and the connecting portion 3a of the disc portion 3. Thus, the urging force can be applied to the bracket part 2 and the disk part 3 side. Instead of the disc spring 7, other general-purpose urging means (coil spring, soft resin, etc.) may be used.

  Thus, by attaching the connecting means 4 between the connecting portion 2a of the bracket portion 2 and the connecting portion 3a of the disk portion 3, as shown in FIG. 6, the insertion portion 5b of the insertion member 5 and the notch of the connecting portion 2a are provided. The clearance t is provided between the wall surface of 2aa and the wall surface of the notch 3aa of the connecting portion 3a, and the bracket portion 2 and the disk portion 3 are relatively movable at least by the clearance t. In this embodiment, since the deformation means 8 is assembled to the connecting portions (2a, 3a), the clearance t is formed by a gap between the deformation means 8 and the insertion member 5. Accordingly, when the vehicle is braked, when the disk portion 3 generates heat due to sliding of the brake pad 9 and expands, it can be moved relative to the bracket portion 2. It is possible to avoid the occurrence of deformation accompanied by distortion or the like.

  Here, in this embodiment, the deformation | transformation means 8 which can deform | transform with the relative movement of the bracket part 2 and the disk part 3 is provided. The deforming means 8 includes a spring member (see FIGS. 1, 2, and 9) attached to the connecting portions (2a, 3a) of the bracket portion 2 and the disc portion 3 by the connecting means 4, and the bracket portion 2 and the disc portion 3 are included. The spring member can be deformed along with the relative movement. That is, for example, when braking the vehicle, if the bracket part 2 and the disk part 3 try to move relative to each other, the deformation means 8 is deformed by the moving force, and the connection means 4 and the connection part 2a of the bracket part 2 or the disk part. Thus, it is possible to mitigate the impact when the three connecting portions 3a interfere with each other.

  Further, as shown in FIG. 9, the deforming means 8 according to the present embodiment is made of a metal spring member that has a gap portion 8a and is bent into a substantially C shape, and the gap portion 8a has a gap dimension. It is attached to the clearance t in the connecting part (2a, 3a) of the bracket part 2 and the disk part 3 in a state where the diameter is reduced so as to be reduced, and an urging force is applied to the connecting part (2a, 3a) by a restoring force. Configured to get. However, the deformation | transformation means 8 which concerns on this embodiment is attached to all the some connection means 4 (connection part (2a, 3a) of all the connection means 4).

  10, the shape between the connecting portion 2a of the bracket portion 2 and the connecting portion 3a of the disk portion 3 (specifically, between the notch 2aa and the notch 3aa) is substantially circular. Therefore, after the deformation means 8 is inserted and assembled following the shape, the insertion means 5 is inserted into the deformation means 8 and the connection means 4 is assembled. Thereby, in the connection part (2a, 3a), the connection means 4 can be assembled | attached, forming the clearance t between the deformation | transformation means 8 and the penetration member 5 (refer the figure (b)).

  Thus, when the deformation means 8 is attached to the connection means 4, as shown in FIG. 2, it is clamped by the flange portion 5a of the insertion member 5 and the disc spring 7 (or collar 6), and the connection portions (2a, 3a). ) Is securely held in the bracket. In addition, since the deformation | transformation means 8 which concerns on this embodiment is comprised so that a biasing force can be provided with respect to a connection part (2a, 3a), the disc spring 7 of the connection means 4 can be abolished.

  According to the above embodiment, the deformation means 8 that can be deformed with the relative movement of the bracket part 2 and the disk part 3 is provided. Therefore, when the bracket part 2 and the disk part 3 are relatively moved, the deformation means 8 is deformed. Thus, the impact between the connecting means 4 and the bracket part 2 or the disk part 3 can be mitigated, and the connecting means 4 and the bracket part 2 or the disk part are maintained while maintaining the relative movement of the bracket part 2 and the disk part 3. 3 can be suppressed.

  Further, the deformation means 8 according to the present embodiment is composed of a spring member attached to the connection part (2a, 3a) of the bracket part 2 and the disk part 3 by the connection means 4, and the relative relation between the bracket part 2 and the disk part 3 is concerned. Since the spring member can be deformed along with the movement, it is possible to suppress the interference sound caused by the interference between the connecting means 4 and the bracket part 2 or the disk part 3 while maintaining the relative movement of the bracket part 2 and the disk part 3 well. Can do.

  Furthermore, a plurality of connecting means 4 according to this embodiment are formed in the circumferential direction of the bracket part 2 and the disk part 3, and the deforming means 8 are attached to the connecting parts (2a, 3a) of all the connecting means 4. Therefore, the interference sound by interference with the connection means 4 and the bracket part 2 or the disk part 3 can be suppressed more reliably. Note that the deformation means 8 may be attached to only an arbitrary one of the plurality of connection means 4. Furthermore, the deforming means 8 according to the present embodiment is composed of a spring member bent into a substantially C shape following the shapes of the connecting portions (2a, 3a) of the bracket portion 2 and the disc portion 3, so that the brake disc 1 It is possible to easily perform the attaching operation when attaching the deformation means 8 to the existing brake disc 1 and to apply it easily.

  Further, in place of the deformation means 8 according to the above-described embodiment, as shown in FIGS. 11 and 12, a deformation means 8 'in which a positioning convex portion 8'b is formed in addition to the gap portion 8'a may be used. The deforming means 8 'has the same configuration as that of the above embodiment except that the positioning convex portion 8'b is formed. In this case, a concave portion 2ab (see FIG. 12A) corresponding to the positioning convex portion 8'b is formed at a predetermined position of the connecting portion 2a (specifically, the notch 2aa) in the bracket portion 2, and the concave portion By assembling the deforming means 8 ′ while aligning the positioning convex portion 8′b with 2ab, the posture when the deforming means 8 ′ is attached is always constant (as shown in FIG. 12B, the gap 8′a is And a posture oriented toward the notch 3aa).

  Although the present embodiment has been described above, the present invention is not limited to this, and the deforming means 8 that can be deformed in accordance with the relative movement of the bracket portion 2 and the disk portion 3 is an urging force in the assembled state. It is good also as what does not provide. That is, the deformation means 8 is sufficient as long as it allows the relative movement of the bracket portion 2 and the disk portion 3 and can be deformed along with the relative movement of the bracket portion 2 and the disk portion 3, and is attached like a spring member. It does not have to give power.

  A bracket portion that is attached to the axle of the vehicle, a disc portion that is pressed against the brake pad, and a coupling means that couples the bracket portion and the disc portion so as to be movable relative to each other. As long as the brake disk is provided with a deforming means that can be deformed along with the relative movement, it may have another shape or have another function.

DESCRIPTION OF SYMBOLS 1 Brake disc 2 Bracket part 3 Disc part 4 Connection means 5 Insertion member 6 Collar 7 Disc spring (biasing means)
8 Deformation means 9 Brake pad 10 Caliper 11 Piston α Front surface β Back surface

Claims (4)

In a brake disc that is attached to the axle of a vehicle and brakes the vehicle by pressing a brake pad,
A bracket portion that is attached to an axle of a vehicle; a disc portion that is pressed against the brake pad; and a coupling means that couples the bracket portion and the disc portion so as to be relatively movable. A brake disc comprising a deformation means capable of being deformed with relative movement of the disc portion.   The deforming means includes a spring member attached to the connecting part of the bracket part and the disk part by the connecting means, and the spring member can be deformed with relative movement of the bracket part and the disk part. The brake disc according to claim 1.   3. The brake disk according to claim 2, wherein a plurality of the connecting means are formed in the circumferential direction of the bracket part and the disk part, and the deformation means is attached to the connecting parts of all the connecting means.   4. The brake disk according to claim 2, wherein the deforming means comprises a spring member bent into a substantially C shape following the shape of the connecting portion of the bracket part and the disk part.

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