JPS6065919A - Disk brake - Google Patents

Abstract

PURPOSE:To enable the position of a fixed pad relative to a disk plate to be adjusted easily to provide a stable braking force by providing a spring attached to a connecting rod between a brake body and a fixed pad holder while providing a screw for adjusting the displacement of a fixed member. CONSTITUTION:Both ends fixed member 3 provided on the connection of a brake body 1 and a fixed pad holder 26 are fixed to a brackets 5, 7 respectively. And when an inner wire 9 is pulled in braking, a crank 10 is rotated to transmit oil pressure in a master cylinder to a wheel cylinder 11. In this case, a connecting rod 2 is inserted from the connection 2 side to extend through a bearing portion 28 of the fixed member 3 so that the threaded end is screwed into a threaded hole 29 in the fixed pad holder 26 while a spring 32 attached to the connecting rod 27 is interposed between the connection 2 and the fixed member 3. Thus, by turning a screw 31 can be adjusted the relative position of the connection 2 and the holder 26 to the fixed member 3 within adjusting allowances S1, S2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc brake suitable for two-wheeled vehicles such as bicycles, in which the fixed pad is always parallel to the disc plate, and the fixed pad is always placed parallel to the disc plate so that the fixed pad is at a position of 2/2 with respect to the disc plate. This provides disc brakes that can be easily adjusted.

Conventional configuration and problems Disc brakes are controlled by clamping a disc plate between a movable pad and a fixed pad that are pressurized by a wheel piston. The wear of the movable hat is taken care of by adjusting the position of the reservoir piston of the reservoir tank provided between the two.

On the other hand, the fixed pad also needs to be able to be adjusted to a constant position relative to the disk plate when assembling the brake or when the pad wears out.

Purpose of the Invention The present invention provides reliable and stable control by improving the connection between the fixing pad holder and the main body so that the fixing pad is always parallel to the disk plate and its position relative to the disk plate can be easily adjusted. The purpose is to demonstrate power.

Composition of the invention 3, <.

The disc brake of the present invention includes a main body provided with a pressurizing mechanism for a movable pad, a holder for a fixed pad that clamps a disc plate together with a movable bar, and a connecting portion between the holder and the holder of the main body. The connecting rods are connected by a plurality of connecting rods that are loosely interposed with a fixing member that can be freely deflected, and the connecting rods are equipped with springs that are interposed between the fixing member and the holder connecting portion or the holder, and The present invention is characterized in that a fixing member deflection adjusting screw is provided on the holder connecting portion or the holder, and is screwed into the fixing member at a position corresponding to the center of the resultant force of the spring.

DESCRIPTION OF THE EMBODIMENTS In FIG. 1, 1 is the brake body, and one end of the fixing member 3 provided at the connection part 2 with the fixed band holder is connected to the platform 6 of the seat stay 4 and the placket 7 of the chain stay 8-6. The main body 1 is fixedly attached to the bicycle body.

The main body 1 has an outer wire attachment piece 8 on the lower side, and a crank 10 connected at one end to the inner wire 9 on the rear side.
It is pivoted. When the wire 9 is pulled forward by a braking operation, the crank 10 rotates and presses a master piston (not shown), so that the hydraulic pressure in the master cylinder is transmitted to the wheel cylinder 11 via the reservoir tank, which has a built-in reservoir piston. Lively. 12
is a disk plate rotating in the direction of arrow X.

Figure 2 shows the structure of the wheel cylinder and pad. The wheel cylinder 11 has a wheel comp 13
A wheel piston 14 equipped with a bushing rod 15 pressed by the piston 14, a return spring 16. A dust seal 17 and the like are provided.

A movable pad holder 18 fixes the movable pad 19 and is pressed against the disk plate side by the bushing rod 15;
0 is a servo arm whose one end is supported by a shaft 21 to the holder 18 and the other end is supported by a shaft 23 to an ear piece 22 provided on the wire attachment piece 8, and 24 is its return spring. During braking, due to the rotational force of the disc plate applied to the pad 19, the shaft 21 that supports the holder 18 moves in an arc shape shown in the arrow y direction with the shaft 23 as the center. A wedge effect is generated between the disc plate 12 and a strong braking force.

25 is a fixed pad provided opposite the pad 19, and 26 is its holder.

- FIG. 3 shows the joint between the fixed pad holder 26 and the main body 1. The connecting portion 2 of the main body 1 with the holder 26 and the corresponding portion of the holder 26 are formed into a U-shaped cross section, and the fixing member 3 is inserted into the hollow portion formed between the two. 27, 2 is a connecting rod inserted from the connecting part 2 side, passes through the bearing part 28.28 of the fixed member 2, the threaded part at the tip is screwed into the screw hole 29.29 provided in the holder 26, and the holder 26 to the connecting portion 2. 30°30
is attached to the connecting rod 27.27, and the fixing member 3 and the connecting part 2
This is a spring interposed between the Reference numeral 31 denotes a screw for adjusting the displacement of the fixing member, which is screwed into a screw hole 32 provided between the bearing parts 2 and 28 of the fixing member, and its tip is loosely engaged with the hole 33 of the holder 26.

A-- Therefore, by turning the screw 31, the adjustment allowance S1. shown in FIG. In S2, the relative positions of the connecting part 2 and the holder 26 with respect to the fixing member 3 can be adjusted.

That is, when the fixing pad 25 is worn out and the distance S4 between it and the disk plate 12 becomes wider, turning the screw 31 to the left will move the holder 26 toward the fixing member 3, so that the initial setting value will be maintained. Can be adjusted. In addition, when adjusting the pad position in this way, the spring 32 is attached to the connecting rod 27, and the screw 31 is located at the center of the resultant force of the spring, so the pad 26 is always kept parallel to the disk plate 12, and one side of the pad There is no collision, and there is no rattling when driving or braking.

In the above example, the spring 32 and the screw 31 are provided on the connecting part 2 side, but they may also be provided on the holder 26 side, or the connecting rod 2
7 may be three or more.

Effects of the Invention As described above, according to the present invention, the fixing band can always be kept parallel to the disk plate and the position relative to the disk plate can be easily adjusted.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the disc brake of the present invention, FIG. 2 is a sectional view taken along line nn' in FIG. 1, and FIG. 3 is a sectional view taken along line m-m' in FIG. 1...Main body, 2...Connection part, 3...
... fixed member, 12 ... disk plate, 14 ... wheel piston, 19 ... movable pad,
25... Fixed pad, 26... Pad holder, 27... Connecting rod, 31... Screw,
3o... Spring. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (1)

[Claims] A main body provided with a pressure mechanism for a movable pad, and a holder for a fixed pad that clamps a disk plate together with the movable pad, and the holder and a holder series connection part of the main body are interposed between the two so as to be freely deflectable. It is coupled to a plurality of connecting rods that play with the fixed member, and a spring interposed between the fixed member and the holder series connection portion or the holder is attached to the connecting rod, and the center of the resultant force of the springs on the fixed member is attached to the connecting rod. A disc brake, wherein the holder connecting portion or the holder is provided with a fixing member deflection adjusting screw screwed at a position corresponding to the holder.