JP3049608U - Independent brake pads - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To prevent a brake pad of a disk brake from being worn out on the front surface and becoming an uneven surface so that the braking effect is not reduced. SOLUTION: In a brake pad in which a pad and a back plate in a disc brake are integrated and provided integrally, a single flat plate body in which a back plate is divided into a plurality of parts by providing a partition portion in a substantially central direction of the back plate. It is provided in.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a brake pad for a disc brake, and particularly to a brake pad in which a pad and a back plate are provided integrally by overlapping the pad and the back plate, the back plate is divided into a plurality of parts by providing a partition portion in a substantially central direction of the back plate. The present invention relates to a brake pad provided on a single flat body without being separated.

[0002]

[Prior art]

 In conventional brake pads for disc brakes, a pad made of a friction material such as sintered metal is fixed to a back plate made of a flat plate made of a tough material such as iron, and superimposed and provided integrally. The pad and the back plate are superimposed, and a brake pad integrally provided is attached to both sides of the rotor with calipers, and the pad is pressed against the rotor via hydraulic pressure by the pressure applied by the piston to stop the rotation of the rotor. It was to brake the rotation of the wheels.

In a conventional brake pad of a disc brake, a pad and a back plate are integrally laminated, and the brake pad is arranged in a substantially central direction perpendicular to the rotation direction of the rotor as shown in FIG. As shown in the figure, the car is divided into two parts in a substantially S-shape, attached to both sides of the rotor by calipers, and the rotor separated by a piston is pressed against the rotor to stop the rotation of the rotor. It was to brake the rotation of the wheel.

[0004]

[Problems to be solved by the invention]

 In conventional brake pads for disc brakes, a back plate made of a tough material such as an iron plate, which is formed in substantially the same shape as a pad made of a friction material such as sintered metal, is superposed on the pad and firmly attached integrally. The brake pad is mounted on both sides of the rotor from both sides in such a way as to be clamped by calipers, and a strong pressing force by a piston is applied to the back plate of the brake pad via hydraulic pressure. Therefore, when the pad is pressed against the rotor that rotates at a high speed, very strong friction and force are applied as if the pad pressed against the rotor bites in the direction of the rotor's rotational direction. This causes the plane at this location of the pad to wear significantly faster than the rest of the As a result the braking effect of the plane becomes a distorted irregular surface is lowered significantly.

[0005] Furthermore, the contact surface of the pad pressed against the rotor rotating at high speed has different rotational speeds and the contact distance between the pad and the rotor in the outer circumferential direction and the center direction of the rotor. The amount of reduction due to wear of the contact surface varies depending on the position, and as a result, the plane that is the contact surface of the pad with the rotor becomes stiff, so that the entire front surface of the pad cannot be completely close to the plane of the rotor. The braking effect is reduced because the maximum frictional effect that can only be obtained by full surface contact of all the front surfaces of the pad is not obtained, and the brake is used to significantly reduce the service life of the pad. Frequent replacement of the pads is required, which increases the cost of inspection and maintenance. When the vehicle needs to be stopped, or when traveling on a long steep downhill road with braking applied for a long time, there is a risk that a sufficient braking effect cannot be obtained and an unpredictable danger may occur. there were.

[0006] Furthermore, while the brake pad is integrally formed by superimposing the pad and the back plate, the brake pad is formed in a substantially S-shape at a substantially central portion in a direction orthogonal to the rotation direction of the rotor. When the pad is pressed into contact with the rotor by a piston after being attached to both sides of the rotor by calipers with a caliper, the pad pressed against the rotor that rotates at high speed moves toward the outer periphery of the rotor by the action of centrifugal force. The moving force acts on the rotor, causing it to move toward the outer periphery of the rotor, causing the pad to come off during braking for a long period of time while braking, especially on steep hills. There is a problem that will not work.

[0007] Furthermore, the pad divided into two in an S-shape from a substantially central portion is such that each of the two pads is worn due to abrasion on a plane of a front surface which is close to each other in an inlet direction and an outlet direction with respect to the rotation direction of the rotor. The difference in the amount of reduction of the front surface of the pad leads to an uneven surface, and the area of the pad in close contact with the rotor is reduced by that amount, reducing the braking effect. In addition, as shown in FIG. The centrifugal force acts on the pad that is pressed against the rotor, causing the rotor to move in the outer circumferential direction.Especially when the brakes are applied suddenly or the brakes are applied on long steep hills for a long time, the The force to move in the outer circumferential direction is strong, and as a result, the use of the pad for a long time causes a difference in the area of the two divided pads which are in close contact with the rotor. When this happens, the braking effect is significantly reduced, and the portion with a small area close to the rotor has a smaller frictional force, so a stronger force is applied to move in the outer circumferential direction. The press contact positions are shifted from each other, and there is a problem that the braking effect is further reduced.

The present invention has made intensive studies to overcome and solve the above-mentioned problems, and as a result, in a brake pad in which a disc brake pad and a back plate are integrated and provided integrally, The back plate is divided into a plurality of parts by providing a partition in the direction of the approximate center, and the back plate is formed into a single flat body without being separated, so that the piston can strongly press the back plate through hydraulic pressure. When the pad is pressed against the rotor by adding the back plate, the back plate is allowed to bend within a certain range in the partition, so that the entire plane in front of the pad always stays on the side plane of the rotor rotating at high speed. It is an object of the present invention to provide a brake pad which can exhibit a maximum braking effect in close contact with a perfect state.

[Means for Solving the Problems]

In order to solve the above-mentioned problem, the present invention provides a brake pad in which a pad and a back plate of a disc brake are overlapped and provided integrally, by providing a partition portion in a substantially central portion direction of the back plate. By arranging the back plate on a single flat plate, the back plate can be freely bent within a certain range from the partition so that the entire plane of the pad is always in complete contact with the rotor. It becomes something.

[0010] Further, in a brake pad in which a pad and a back plate in a disc brake are overlapped and provided integrally, a partition portion is provided in a substantially central portion direction of the back plate, and the partition portion is formed in a notch groove to form a back plate. Are provided on a single flat plate divided into a plurality of pieces.

Further, in a brake pad in which a pad and a back plate in a disc brake are overlapped and integrally provided, a partition is provided in a substantially central portion direction of the back plate, and the partition is formed by one or more cross sections. The back plate is formed in a single flat plate divided into a plurality of sections by forming the notch in a notch having a substantially concave shape or a substantially U-shaped cross section.

[0012] Furthermore, in a brake pad in which a pad and a back plate in a disc brake are overlapped and provided integrally, a partition portion is provided in a substantially central portion direction of the back plate, and the partition portion has a thin valley-shaped cross section. The back plate is provided in a single flat plate having a plurality of divided back plates.

[0013]

[Embodiment of the invention]

 The brake pad of the disc brake of the present invention is a pad made of a friction material made of a sintered metal such as graphite or a copper system formed in a sector shape or a rectangular shape having a thickness of about 9 mm. A back plate made of a tough material such as a single flat plate made of an iron plate and formed in the same shape and having a thickness of about 5 mm is formed integrally with the pad by firmly bonding to the pad. The back plate is used such that the substantially fan-shaped outer peripheral side direction, which is the length direction of the back plate, is positioned concentrically with the outer peripheral side direction of the rotor, and is sandwiched between calipers on both side planes of the rotor. The brake pad is connected to the back plate and the piston by a pad provided integrally on the front of the back plate, and is strongly pressed against the rotor by the piston via hydraulic pressure. The one in which the friction at the contact surface between the rotor and pad allowed stopping the rotation of the b Ta braking rotation of the wheel.

[0014] In this case, regardless of the state of the pad pressed against the rotor by the piston, and even when worn over a long period of use, the entire plane of the pad is always completely in contact with the side plane of the rotor. In other words, the back plate on which the pad is mounted so that the area of the pad in close contact with the rotor is maximized, is perpendicular to the direction of rotation of the rotor and perpendicular to the length of the back plate. In the substantially central direction, a partition is provided, the back plate is divided into two by the partition, and the plate is divided into two from the partition and formed into one flat plate without being separated. And the partition is formed by notching one or more notches having a substantially concave cross section or a substantially U-shaped cross section, or the partition is not loosened. It is formed in a generally valley-like shape with the thickness gradually becoming thinner in the central direction.

Further, as shown in FIG. 1, the entire surface of the front surface of the pad can be made smooth and close to the plane of the rotor, as shown in FIG. 1. However, as shown in FIG. A lost discharge groove is provided near the center to eliminate frictional dust. By providing a lost discharge groove in the pad in this way, not only can friction dust be removed, but also the pad bends within a certain range from the lost removal groove when the pack plate is pressed against the rotor with the piston. Therefore, there is an effect that the adhesion of the pad to the rotor can be performed more effectively.

When the partition is formed in a notch groove, the number of the notch grooves depends on the size and type of the vehicle using the disc brake, the size of the engine displacement, and the required braking effect. Is a single singular or a plurality of two or more, and the notch groove is formed by arbitrarily selecting the depth, width, and shape.

[0017]

As described above, the brake pad of the disc brake is provided integrally with the pad and the back plate by superimposing the pad and the back plate, and the partition plate is provided substantially in the direction of the center to divide the back plate into two. Since the back plate is provided on one flat plate, the back plate divided into two sections from the partitioning part is strongly pressed against the rotor by the piston, and the rotational speed of the rotor and the frictional force between the rotor and the pad are increased. As shown in FIG. 9, the back plate is freely bent within a certain range from the partitioning portion so that the entire surface of the pad is completely in close contact with the plane of the rotor, and the back plate acts so as to always maximize the close contact area. Since the pad is provided integrally with the back plate of a single flat plate, there is no danger that the pad will move or deviate in the outer circumferential direction of the rotor. Since the entire surface of the pad is completely in contact with the plane of the rotor, the plane of the front of the pad to be worn is always a uniform plane, and the area where the rotor and the pad rub is maximized. This works so that a braking effect can be obtained.

Further, since the partition provided in the direction of the approximate center of the back plate is formed in a notch groove, and the back plate is provided on one flat plate which is divided into a plurality, the partition is provided. The notch grooves make it easy to bend freely within a certain range, so when the pad is strongly pressed against the plane of the rotating rotor by the piston, the back plate with the pad attached together rotates the rotor. Pads that are easily separated from the notch grooves, which correspond to the speed and rotation distance, and are easily bent from the cut groove as a partition so that the pad surface is completely in close contact with the bite due to rotation, and maximum contact is achieved. It works so that a high braking effect is exhibited by obtaining the area and the maximum friction effect.

[0019] Furthermore, one or more partition sections are cut out in a substantially concave shape or a substantially U-shaped cross section in the direction of substantially the center of the back plate to form notched grooves, and the back plate is formed. Since the back plate is provided on a single flat plate, the pad is pressed against the rotor by the pressure of the piston, and the back plate is free to a certain extent in the cutout groove of the partition. The partition can be easily formed by simply notching the substantially central portion of the back plate in a substantially concave or substantially U-shaped groove. In this case, the partition is made more flexible, and as a result, it can be bent more freely by the pressure of the piston, so that the area where the pad is in close contact with the rotor can be maximized.

Further, a partition is provided substantially in the direction of the center of the back plate, and the partition is concavely formed in a thin shape having a cross-sectional valley shape, and the back plate is provided on a single flat plate divided into a plurality of sections. Therefore, it is possible to easily form the back plate by simply forming or shaving the center portion of the back plate into a substantially valley shape without notching a groove to form the partition portion of the back plate. It works.

[0021]

【Example】

 Next, the present invention will be described based on examples, but these are not intended to limit the present invention. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The brake pad 1 of the disc brake of the present invention is formed of a single flat plate-shaped pad 2 made of a wear material made of graphite or a copper-based sintered metal or the like, and is formed in substantially the same shape as the pad 2. The back plate 3 is made of one flat plate made of a tough material, and the pad 2 and the back plate 3 are provided integrally by being superposed.

As shown in FIG. 1, the brake pad 1 of the present invention is mounted on both side planes 4 a of the rotor 4 with the caliper 5 sandwiching the rotor 4 therebetween, and is integrally formed on the front surface of the back plate 3. The pad 2 attached by superposition is provided so as to press the back plate 3 against the rotor 4 by pressing the back plate 3 toward the rotor 4 via the hydraulic pressure of the piston 6. The pad 2 is provided with a lost discharge groove 7 at the front surface thereof so as to discharge the abrasion dust generated by friction with the rotor 4. The abrasion dust generated when the pad 2 is pressed against the rotor 4 is removed. 7 are sequentially discharged.

The back plate 3 is provided with a partition 8 in a substantially central direction in the length direction, and is divided into two in the length direction. The partition 8 is formed as shown in FIGS. The notch groove 9 having a substantially concave cross section and the notch groove 10 having a substantially U-shaped cross section, and the number of the notch grooves 9 to 10 are not limited to one, but may be a plurality of notches as shown in FIG. As shown in the figure, the partition plate 8 may be formed in three pieces. Further, as shown in FIG. 6, the partition 8 is formed in a substantially valley shape 11 in the direction of the center of the back plate 3. It is gradually formed to be the thinnest.

Since the brake pad 1 in which the back plate 3 in which the partitioning portion 8 is provided in the center portion direction is overlapped with the pad 2 and integrally provided is attached to the rotor 4 as the disc brake shown in FIG. When a strong force is applied to the back plate 3 by the piston 6, the two divided pads 2 from the partition 8 are freely bent and bent together with the divided back plate 3, The whole plane of the pad 2 comes to be completely close to the plane 4a of the rotor 4.

[0025]

[Effect of the invention]

 Since the present invention is configured as described above, since the back plate 3 of the brake pad 1 is freely bent within a certain range from the partition portion 8, the entire plane of the integrally provided pad 2 is aligned with the plane 4a of the rotor 4. Since it is always in close contact, there is an effect that a great braking effect can be exhibited.

Further, since the entire surface of the pad 2 of the brake pad 1 is always completely in close contact with the rotor 4, even if the brake is used for a long time, the braking effect is hardly reduced. It is possible to obtain a high braking effect even when running for a long time while braking on a steep hill or applying a brake on a long steep hill. As a result, the service life of the brake pad is prolonged, and the cost for brake pad inspection and maintenance can be provided at a low cost.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a state in which a brake pad of the present invention is mounted on a rotor.

FIG. 2 is a side view of the present invention.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a side view of the present invention.

FIG. 5 is a side view of the present invention.

FIG. 6 is a side view of the present invention.

FIG. 7 shows a conventional brake pad which is cut off in a substantially S-shape from the center.

8 is a front view showing an operation state in which the conventional brake pad of FIG. 7 is attached to a rotor and pressed against the rotor.

FIG. 9 is a front view of the brake pad of the present invention shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brake pad 2 Pad 3 Back plate 4 Rotor 4a Both side planes of rotor 5 Caliper 6 Piston 7 Lost discharge groove 8 Partition part 9 Notch groove 10 Notch groove 11 Substantially trough shape 12 Hydraulic supply port A Divided into S-shape and cut off Brake pad B S-shaped split back plate C S-shaped split line

Claims (4)

[Utility model registration claims] 1. A flat plate in which a back plate is divided into a plurality of flat plates by providing a partition portion in a substantially central portion direction of the back plate in a brake pad in which a pad and a back plate in a disk brake are integrally provided. An independent brake pad that is provided on the body. 2. A brake pad in which a pad and a back plate of a disc brake are overlapped and integrally provided, wherein a partition portion is provided in a substantially central portion direction of the back plate, and the partition portion is formed in a cutout groove. An independent brake pad characterized by being provided on a single flat body divided into a plurality of flat plates. 3. A brake pad in which a pad and a back plate in a disc brake are overlapped and integrally provided, wherein a partition portion is provided in a substantially central portion direction of the back plate, and the partition portion has one or a plurality of substantially concave sections. Alternatively, an independent brake pad is provided in which a back plate is provided in a single flat plate body divided into a plurality of notches by being formed in a notch groove cut out in a substantially U-shaped cross section. 4. A brake pad in which a pad and a back plate in a disc brake are overlapped and integrally provided, wherein a partition is provided substantially in the direction of the center of the back plate, and the partition is thinly concaved in a substantially valley-shaped cross section. An independent brake pad, wherein a back plate is provided on a single flat plate body divided into a plurality of sections.