JPS6150169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc brake, particularly a floating type disc brake for two-wheeled vehicles.

[Conventional technology]

FIG. 1 shows a conventional floating type disc brake for two-wheeled vehicles.

This disc brake is a two-wheeled vehicle fork 1
Protrusions 4 of a caliper 3 are stacked on both sides of a fixing member 2 provided on the holder, and both are connected with a pin 5.
The side surface 6 of the caliper 3 is in contact with the flat surface 7 of the fixed member 2, and the braking torque when braking is applied when the disc A is rotating in the forward direction (direction of the arrow) is the same as the above-mentioned caliper. It is received by the flat surface 7 of the fixing member 2 which is in contact with the side surface 6. Conversely, the braking torque during backward movement is received by the pin 5 inserted into the fixing member 2.

[Problem that the invention seeks to solve]

In the above case, there is no particular problem in receiving the braking torque during forward movement, but since the braking torque during backward movement is received by one pin, the load on the pin increases. Therefore, the above-mentioned conventional disc brake has the problem that it is not possible to apply a very large braking torque when moving backward.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a floating type disc brake for a two-wheeled vehicle that can receive a large braking torque both when moving forward and when moving backward.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a groove 17 in the disk axial direction on the end face of the fixing member 11, and attaches the caliper 12 to the fixing member 11 so as to be slidable by a connecting pin 23 in the disk axial direction. , the bridge part 20 connecting the arm 18 on the wheel side and the arm 19 on the cylinder 15 side of the caliper 12 by crossing over the disk A is slidably fitted into the groove 17, and the inner surface of each arm 18, 19 is fitted. The pad assembly 13 is arranged with the disk A sandwiched between the two.
Each of the 14 back metals 28 is slidably supported by pad pins 32 that pass through both arms 18 and 19,
Projections 33 and 34 are provided on both sides of the insertion portion of the pad pin 32 of each back metal 28, and the inner surfaces of each projection 33 and 34 are in contact with the end surfaces 26 and 27 of the bridge portion 20 on the disk insertion side and the rotation side. This is what I did.

Note that the fixing member 11 may be directly provided on the fork 1 of the two-wheeled vehicle.

〔Example〕

Embodiments of the present invention will be described below based on FIGS. 2 and 3.

The disc brake of this embodiment has a fixed member 1
1, Caliper 12, Pair of pad assemblies 1
3, 14 and a piston 16 inserted into a caliper cylinder 15, and is used in combination with a disk A that rotates together with the wheel.

The fixing member 11 is integrated with a fork 1 of a two-wheeled vehicle, and has a groove 17 in the axial direction of the disk A formed in one end surface.

The caliper 12 consists of an arm 18 on the wheel side, an arm 19 on the cylinder 15 side, and a bridge part 20 that connects both arms 18 and 19 at the upper part of the disk A in the radial direction. , 22 are provided protrudingly.

The end of the fixing member 11 on the side where the groove 17 is formed is fitted with a margin between the brackets 21 and 22.
The caliper 12 is connected to the fixing member 1 by a connecting pin 23 that passes through the disk A in the axial direction over a distance of 22.
It is slidably connected to 1.

A caliper 12 is inserted into the groove 17 on the end face of the fixing member 11 fitted between both the brackets 21 and 22.
along the groove 17 (i.e.,
The inner surfaces of both side walls 24 and 25 of the groove 17 are in contact with an end surface 26 on the disk insertion side and an end surface 27 on the extraction side of the bridge portion 20.

The pad assemblies 13 and 14 are connected to the caliper 12.
along the inner surface of each arm 18, 19 of
A protrusion 29 is provided at the center of the upper end of the back metal 28 of each pad assembly 13, 14. Each protrusion 29 is provided with a long hole 30 extending in the circumferential direction of the disk A.

Each of the above protrusions 29 is inserted into a recess 31 formed in the surface of the bridge part 20 on the disk A side, and the pad pin 32 passing through from the arm 18 on the wheel side of the caliper 12 to the arm 19 on the cylinder side is connected to the above-mentioned length. Each pad assembly 13, 14 is supported by being loosely inserted into the hole 30. Note that the piston 16 is brought into contact with the back surface of the back metal 28 of the pad assembly 13 supported along the arm 19 on the cylinder side.

In addition, the back plate 2 of each pad assembly 13, 14 is
Protrusions 33 and 34 are formed on both sides of the protrusion 29 of No. , 34 are in contact with the disk insertion side end surface 26 and the disk extraction side end surface 27 of the bridge portion 20, respectively. Further, the end surface of the back metal 28 between the protruding portion 29 and each protrusion 33, 34 is connected to the bridge portion 2.
Contact with 0.

Since the disc brake of the embodiment is constructed as described above, the braking torque applied to each pad assembly 13, 14 when moving forward or backward is equal to the braking torque applied to the back plate 28.
is transmitted to the caliper 12 via the contact surface of the bridge portion 20, and further transmitted to the fixing member 11 via the contact surface between the bridge portion 20 and the fixing member 11.

〔effect〕

Since the disc brake of the present invention is constructed as described above, the braking torque applied to each brake pad is received by the fixed member via the caliper's prismatic portion during both forward movement and reverse movement. Therefore, compared to the conventional system in which a pin receives braking torque when traveling backwards, there is an effect that a larger braking torque can be received when traveling backwards.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing how a conventional disc brake for a two-wheeled vehicle is installed, FIG. 2 is a sectional view of the disc brake of the present invention, and FIG. 3 is a longitudinal sectional front view thereof. 11...Fixing member, 12...Caliper, 13,
14... Pad assembly, 15... Cylinder,
16... Piston, 17... Groove, 18, 19...
Calipa's arm, 20... Bridge part, 21, 22
... Bracket, 23 ... Connection pin, 24, 25
... Side wall, 26, 27 ... End surface, 33, 34 ...
protrusion.

Claims (1)

[Claims] 1 Groove 1 in the disk axial direction on the end surface of the fixing member 11
7, the caliper 12 is slidably attached to the fixing member 11 by a connecting pin 23 in the disk axial direction, and an arm 18 on the wheel side of the caliper 12 is provided.
A bridge part 20 connecting the arm 19 on the cylinder 15 side to the arm 19 on the disk A is slidably fitted into the groove 17, and the disc A is placed between the inner surfaces of the arms 18 and 19. Each back plate 28 of the pad assemblies 13 and 14 is slidably supported by a pad pin 32 that passes through both arms 18 and 19, and protrusions 33 and 34 are provided on both sides of the insertion portion of the pad pin 32 of each of the back plates 28, and each protrusion 33,3
A disc brake for a two-wheeled vehicle in which the inner surface of the bridge part 20 is in contact with the end faces 26 and 27 on the disc input side and the output side.