JP5715932B2 - Disc brake device - Google Patents

Description

  The present invention relates to an improvement of a floating disc brake device mounted on a vehicle.

  Among the disc brake devices, a technique is known in which the appearance of the disc brake device is enhanced by attaching a caliper cover to the front surface of the caliper body that presses the pad against the disc rotor (see, for example, Patent Document 1). .

  As shown in Patent Document 1, the front surface of the caliper body is covered with a caliper cover. The caliper cover has a substantially flat surface. It is desirable that such a flat caliper cover can suppress deformation with respect to external force. As a measure for suppressing such deformation, when the plate thickness of the caliper cover is increased, the weight of the caliper cover may increase, or the layout may be affected by the layout restriction in the wheel.

JP 2005-525519 A

  An object of the present invention is to provide a technique that can suppress an increase in the weight of the caliper cover and increase the strength of the caliper cover.

The invention according to claim 1 is a disk rotor that rotates together with a wheel, a cylinder portion that is disposed opposite to one side surface of the disk rotor and in which a piston is inserted, and a claw portion that is disposed opposite to the other side surface of the disk rotor; A bridge portion connecting the claw portion and the cylinder portion so as to straddle the disk rotor, a caliper body including the cylinder portion, the left and right claw portions and the bridge portion, and a piston side pad disposed between the piston and the disk rotor And a caliper bracket that slidably supports the piston side pad and the claw part side pad in the axial direction of the disk rotor, the piston side pad being arranged between the claw part and the disk rotor. And the claw part side pad against the side surface of the disk rotor to brake the wheel. The caliper cover has a cover body portion that covers the claw portion side, and the cover body portion includes a claw portion that is separately disposed. concave portion is provided between the parts, the caliper cover extending portion that extends in the bend is bent from the cover main body to the pawl portion or the bridge portion is provided, the tip portion of the extending portion pawl portion Alternatively, the left and right claw portions are engaged with the bridge portion, and the extension portions are overlapped with the portions facing the claw portion side pads, and the cover mounting bolts whose axes extend substantially parallel to the direction in which the disk rotor extends. Or it is attached to a bridge part, It is characterized by the above-mentioned.

In the invention according to claim 2 , the claw portion or the bridge portion has a protruding portion that protrudes outward from the peripheral edge portion, and the extension portion of the caliper cover includes an attachment portion that is attached to the claw portion or the bridge portion, and this attachment. And a restricting portion that engages with the protruding portion in the vicinity of the portion and restricts the caliper cover from moving in the vehicle width direction.

In the invention according to claim 3 , the cover main body portion includes a flange portion at an upper edge of the cover main body portion, and the flange portion is a boundary portion between the cover main body portion and the extending portion, and a portion other than the boundary portion. It is characterized by being configured wider than.

In the invention according to claim 1, caliper cover for covering the claw portion side pad is concave portion located between the claw portion to be arranged separately at both ends of the claw portion side pad is provided. Thus the concave portion provided in the cover main body, the strength of the caliper cover portion claw portions of the left and right is not arranged is increased. As a result, the strength of the caliper cover can be increased without increasing the weight. In addition, since the caliper cover does not increase in thickness, there is little concern about restrictions on the layout in which the caliper cover is arranged in the wheel.

Further , the caliper cover is provided with an extending portion that extends to the claw portion or the bridge portion and the tip portion engages with the claw portion or the bridge portion separately from the cover main body portion. The heat generated in the piston side pad or the claw part side pad is transmitted to the extension part via the claw part or the bridge part, and further transmitted to the cover main body part.

Since the caliper cover receives the traveling wind when the vehicle is traveling, the heat conducted to the cover main body can be cooled. Thus, since the heat generated in the pad can be dissipated by both the caliper body and the caliper cover, it is possible to suppress a decrease in brake performance.
Further, since the caliper cover is provided with the extending portion separately from the cover main body portion, there is no concern that the appearance of the caliper cover is impaired.

Furthermore , the heat generated by the claw portion side pad can be efficiently transmitted to the cover main body portion via the extending portion. As a result, the heat dissipation of the disc brake device can be further enhanced.

In the invention which concerns on Claim 2 , the control part of the caliper cover was engaged with the protrusion part provided in the nail | claw part or the bridge | bridging part, and also the extension part of the caliper cover was attached to the attachment part.
With such a configuration, even if the fixing by the mounting portion is released, the caliper cover restricting portion is caught by the protruding portion, and the caliper cover can be prevented from falling off.

In the invention which concerns on Claim 3 , the flange part provided in the upper edge of the cover main-body part is comprised wide at the boundary part of a cover main-body part and an extension part. Thereby, the rigidity between a cover main-body part and an extension part can be improved.

1 is a perspective view of a disc brake device according to the present invention. It is a top view of a disc brake device. FIG. 3 is a cross-sectional view taken along the line 3-3 in FIG. It is a disassembled perspective view explaining the attachment structure of a caliper cover. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 2 (a front view of the caliper cover). It is a perspective view of a caliper cover. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 5. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 6. FIG. 9 is a view taken in the direction of arrow 9 in FIG. 6.

  Hereinafter, embodiments of the present invention will be described in detail.

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the disc brake device 10 includes a disc rotor 11 that is attached to a hub that rotates together with the wheels, and a pad that is attached to the vehicle body side with the disc rotor 11 interposed therebetween and presses a pad, which will be described later, against the disc rotor 11. It comprises a caliper unit 12 that applies braking to the wheels.

The caliper portion 12 includes a caliper bracket 13 attached to a suspension or the like on the vehicle body side, and a caliper body 14 attached to the caliper bracket 13 via support bolts 15 and 15. A caliper cover 40 as a decorative plate is fastened to the caliper body 14 by three cover mounting bolts 17 so as to cover the front surface of the caliper body 14. The caliper bracket 13 and the caliper body 14 are both formed of a casting.
Here, the front surface of the caliper body 14 refers to a surface on the outer side in the vehicle width direction when the caliper body 14 is attached to the vehicle.

Next, the structure of the disc brake device will be described.
As shown in FIGS. 3 and 4, the caliper body 14 includes a cylinder portion 22 that is disposed to face one side surface of the disk rotor 11 and inserts the piston 21, and left and right sides that are disposed to face the other side surface of the disk rotor 11. The claw portion 23 (23L, 23R) and the left and right bridge portions 24 (24L, 24R) connecting the left and right claw portions 23 (23L, 23R) and the cylinder portion 22 so as to straddle the disk rotor 11 Including.
Here, left and right are directions when the caliper body 14 is viewed from the front.

  In addition, the disc brake device 10 includes a caliper bracket 13. The caliper bracket 13 includes a piston-side pad 27 disposed between the piston 21 and the disk rotor 11, left and right claw portions 23L and 23R, and the disk rotor 11. This is a member that supports the claw part-side pad 28 disposed between them so as to be slidable in the axial direction of the disk rotor 11.

A piston 21 is inserted into the cylinder portion 22 so as to be slidable in the rotational axis direction of the disk rotor 11, and the cylinder portion 22 and the piston 21 form a hydraulic chamber 31.
When hydraulic oil is supplied to the hydraulic chamber 31, the piston 21 presses the piston-side pad 27 against the disk rotor 11, and at the same time, the caliper body 14 moves in a direction opposite to the pressing direction of the piston 21 due to the reaction force of the pressing force of the piston 21. The disc rotor 11 is braked by moving and pressing the claw portion side pad 28 against the disc rotor 11 via the claw portion 23. That is, the piston side pad 27 and the claw part side pad 28 are pressed against the side surface of the disk rotor 11 to brake the wheel.
The claw portion 23 of the caliper body 14 is composed of left and right claw portions 23L and 23R, and is disposed separately at both ends of the claw portion side pad 28.

Hereinafter, the caliper cover will be described in detail.
The caliper cover 40 includes a cover main body 41 and extending portions 42L and 42R extending from the cover main body 41 to the left and right claw portions 23L and 23R. The leading end portions 42La and 42Ra of the extending portion are engaged with the protruding portions 44L and 44R provided on the left and right claw portions 23L and 23R. The extending portions 42L and 42R are overlapped and attached to a portion facing the claw portion side pad (FIG. 3, reference numeral 28).

That is, the left and right claw portions 23L, 23R have protrusions 44L, 44R that protrude outward from the peripheral portions 33L, 33R of the left and right claw portions and engage the extended portions 42L, 42R of the caliper cover. The claw portions 23L and 23R have attachment seats 61L and 61R (only the reference numeral 61L is shown) to which the extension portions 42L and 42R of the caliper cover are attached.
In the present embodiment, the mounting seat is provided on the claw portion, but it is possible to provide the mounting seat on the bridge portion.

  Referring also to FIG. 3, the caliper cover 40 is fastened to the claw portion or the bridge portion of the caliper body 14 by the cover mounting bolt 17. As described above, since the piston side pad 27 and the claw part side pad 28 are supported by the caliper bracket 13, the caliper cover 40 is removed when the piston side pad 27 and the claw part side pad 28 are replaced. There is no need. For this reason, exchanging workability of the piston side pad 27 and the claw part side pad 28 is excellent, and the caliper cover 40 can be mounted without being limited by the shape of the caliper bracket 13 or the cylinder part 22, so that versatility is excellent.

  As shown in FIGS. 5 and 6, the caliper cover 40 includes a cover main body 41 that covers the claw side. That is, the cover main body 41 is a portion that covers the front surfaces of the left and right claw portions (FIG. 4, reference numerals 23L and 23R). The cover main body 41 has a first inclined surface 51 whose upper end is inclined toward the caliper body side, and continuously extends downward from the first inclined surface 51 to be a convex portion relative to the other surfaces. The convex surface 50, the left and right second inclined surfaces 52L and 52R that extend continuously and obliquely downward from the lower end of the convex surface 50, and the lower ends are inclined toward the caliper body, and the lower ends of the left and right second inclined surfaces 52L and 52R The main elements are the left and right third inclined surfaces 53L and 53R, which extend obliquely downward continuously from the left and right sides and incline toward the opposite side of the caliper body.

  That is, the left and right second inclined surfaces 52L and 52R are inclined at the lower end toward the caliper body, and the left and right third inclined surfaces 53L and 53R are inclined at the lower end away from the caliper body 14. Thereby, the recessed part 58 is formed in the center of the cover main-body part 41, and the hollow line 54 is formed.

Based on the above configuration, the shape of the cover main body will be described.
As shown in FIG. 7, a convex surface 50 is formed on the cover body 41 of the caliper cover 40, and a concave portion 58 is formed below the convex surface 50 by the second inclined surface 52R and the third inclined surface 53R. .
A center cover mounting portion 46 extends from the upper end of the first inclined surface to the caliper cover 40.

Next, a restricting portion that is provided in the extending portion and prevents the caliper cover from falling off will be described.
Referring also to FIG. 4, the left and right claws 23L, 23R have left and right protrusions 44L, 44R that protrude outward from the peripheral edges 33L, 33R, and the caliper cover extension parts 42L, 42R are The mounting portions 45L and 45R attached to the left and right claw portions 23L and 23R, and the protrusions 44L and 44R are engaged in the vicinity of the mounting portions 45L and 45R to restrict the caliper cover 40 from moving in the vehicle width direction. Regulation parts 56L and 56R.

  As shown in FIG. 8, the caliper cover restricting portion 56L is engaged with the protruding portion 44L provided on the claw portion 23L. Further, as shown in FIG. 4, the left and right attachment seats 61L and 61R (only the reference numeral 61L is shown) are attached with the left and right attachment portions 45L and 45R provided on the extension portions 42L and 42R of the caliper cover, and the left and right claws The center cover mounting portion 46 is attached to the upper mounting seat 62 provided on the upper surfaces of the portions 23L and 23R.

  With this configuration, even if the fixing portions 45L and 45R are not fixed, the caliper cover restricting portions 56L and 56R are caught by the projecting portions 44L and 44R, and the caliper cover 40 is prevented from falling off. Can do.

  As shown in FIG. 9, the cover main body 41 includes a flange portion 64R on the upper edge 41a of the cover main body portion, and the flange portion 64R is a boundary portion 66R between the cover main body portion 41 and the extending portion 42R. It is configured wider than the portion other than the boundary portion 66R.

  Although not shown, similarly, the cover main body 41 includes a flange portion 64L on the upper edge 41a of the cover main body portion, and the flange portion 64L is a boundary portion 66L between the cover main body portion 41 and the extending portion 42L. Thus, it is configured wider than the portion other than the boundary portion.

  The flange portions 64L and 64R provided on the upper edge 41a of the cover body portion are configured to be wide at the boundary between the cover body portion 41 and the extension portions 42L and 42R. Thereby, the rigidity between the cover main-body part 41 and the extension parts 42L and 42R can be improved, As a result, the extension parts 42L and 42R can be reinforced.

The operation of the disc brake device described above will be described next.
Referring to FIGS. 3 to 4, a caliper cover 40 that covers the claw portion side pad 28 is provided with a recess 58 positioned between the left and right claw portions 23 </ b> L and 23 </ b> R that are separately disposed at both ends of the claw portion side pad 28. Yes. Due to the recess 58 provided in the cover main body 41, the strength of the caliper cover 40 in the portion where the left and right claw portions 23L and 23R are not disposed is increased.

  As a result, the strength of the caliper cover 40 can be increased without increasing the weight. Moreover, since the plate thickness of the caliper cover 40 does not increase, there is little fear of restricting the layout in which the caliper cover 40 is arranged in the wheel.

  1 and 3, the caliper cover 40 is extended to the left and right claws 23L and 23R separately from the cover main body 41, and the extended portion 42L is engaged with the left and right claws 23L and 23R. , 42R are provided. The heat generated in the piston side pad 27 or the claw part side pad 28 is transmitted to the extension parts 42L and 42R through the left and right claw parts 23L and 23R, and further to the cover main body part 41.

  When the vehicle travels, the caliper cover 40 receives the traveling wind, so that the heat conducted to the cover body 41 can be cooled. Thus, since the heat generated in the pad can be dissipated by both the caliper body 14 and the caliper cover 40, it is possible to suppress a decrease in brake performance.

Further, since the caliper cover 40 is provided with the extending portions 42L and 42R separately from the cover main body portion 41, there is no fear that the appearance of the caliper cover 40 is impaired.
In the present embodiment, the protruding portion with which the extending portion engages is provided on the claw portion, but it is possible to provide the protruding portion on the bridge portion.

The extending portions 42L and 42R are overlapped and attached to a portion facing the claw portion side pad 28.
The heat generated in the claw portion side pad 28 is efficiently transmitted to the cover main body portion 41 through the extending portions 42L and 42R. As a result, the heat dissipation of the disc brake device 10 can be further enhanced.

  Although the present invention is applied to an automobile in the embodiment, it can also be applied to a tricycle and can be applied to a general vehicle.

  The present invention is suitable for automobiles.

  DESCRIPTION OF SYMBOLS 10 ... Disc brake device, 11 ... Disc rotor, 13 ... Caliper bracket, 14 ... Caliper body, 21 ... Piston, 22 ... Cylinder part, 23 (23L, 23R) ... Left and right claw part, 24 (24L, 24R) ... Left and right Bridge part 27 ... piston side pad 28 ... claw part side pad 33L, 33R ... peripheral edge part of left and right claw part 40 ... caliper cover 41 ... cover body part 41a ... upper edge of cover body part 42L 42R ... left and right extension portions, 45L, 45R ... left and right mounting portions, 56 ... left and right regulating portions, 64L, 64R ... left and right flange portions, 65L, 65R ... left and right boundary portions.

Claims (3)

A disk rotor that rotates with the wheels,
A cylinder part which is arranged opposite to one side surface of the disk rotor and inserts a piston;
Left and right claws disposed opposite to the other side surface of the disk rotor;
A bridge portion connecting the left and right claw portions and the cylinder portion so as to straddle the disk rotor;
Caliper body including the cylinder part, the left and right claw parts and the bridge part,
A piston-side pad disposed between the piston and the disk rotor;
A claw part side pad disposed between the left and right claw parts and the disk rotor;
A caliper bracket that slidably supports the piston-side pad and the claw-side pad in the axial direction of the disk rotor;
A disc brake device for braking the wheel by pressing the piston side pad and the claw side pad against a side surface of the disk rotor;
The left and right claw parts are separately arranged at both ends of the claw part side pad,
A caliper cover disposed opposite to the left and right claw portions separately disposed;
The caliper cover includes a cover body portion that covers the claw side,
The cover main body portion, the concave portion is provided between the separated arrangement the right and left pawl portion,
Before SL caliper cover, said extending portion is extended so as folds into the right and left pawl portion or the bridge portion from the cover main body portion is provided, the pawl tip portions of the left and right of the extending portion, or Engaged with the bridge part ,
Before Kinobede part, the and superimposed on a portion facing the claw portion side pad, the left and right claw portions or the bridge by a cover mounting bolt the disc rotor to the direction substantially parallel to the axis extending extends features and to Lud Isukubureki device that is attached to part. The left and right claw parts or the bridge part has a protruding part that protrudes outward from a peripheral part,
The extension part of the caliper cover is engaged with the projecting part in the vicinity of the attachment part attached to the left and right claw parts or the bridge part, and the caliper cover moves in the vehicle width direction. claim 1 Symbol mounting of the disc brake device, comprising a regulating portion for regulating the. The cover body portion includes a flange portion on an upper edge of the cover body portion,
The flange portion is a boundary portion between the cover main body and the extending portion of claim 1 any one of claims 2, characterized in that it is constructed wider than the portion other than the boundary portion Disc brake device.

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