JPS6222676Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on a pair of friction pads inserted through a window formed in the upper part of the caliper, which connects the ears on both ends of the pad back plate to the bridge portions on the disk insertion side and the disk extraction side of the caliper. This relates to a disc brake for a vehicle that is suspended from a caliper by being slidably locked to the disc brake, and the pad spring body that straddles the disc is fixed only to the bridge portion on the disk rotation side, and the pad spring body The spring part is interposed with a gap between the bridge part and the ear part of the pad back plate so as to maintain elastic force in the direction of the outer circumference of the disc, and the support pin inserted through the caliper straddles the disc and is inserted into the pad back plate. The spring part of the pad spring body is compressed at the upper part of the disk retraction side between the ear parts of the pad, and the ear part of the pad back plate on the disc retraction side is brought into contact or inserted so as to be pressed against the opposing bridge part. Its purpose is to securely hold the friction pads to prevent rattling and lifting during braking, ensuring stable braking at all times, and making it easy to replace the friction pads. To provide a disc brake for a vehicle that can be reliably replaced and that greatly improves replacement work.

An embodiment of the present invention will be described below with reference to the drawings.

1 is a disk that rotates together with the wheel, and 2 is a bracket, which is fixed to a front fork 3 of a two-wheeled vehicle with a mounting bolt 4.

5 is a caliper with cylinders 6a and 7a in the center.
actuating members 6 and 7 disposed opposite to each other on both sides of the disk 1, and disk retraction sides 6b and 7b and disk retraction sides 6 of the actuating members 6 and 7;
The actuating members 6, 7 and the intermediate members 8, 9 are screwed from the outside at symmetrical positions on both sides of the cylinders 6a, 7a. Connecting bolts 10, 11
The intermediate member 8,
They are connected and fixed by lock pins 12 and 13 press-fitted between them near the bridge portions 8a and 9a of 9. This caliper 5 is supported by fixing the operating member 6 to the bracket 2 with a fixing bolt 14, and is supported by the bridge portions 8a, 9 of the intermediate members 8, 9.
straddles disk 1 by a. A fluid passage 15 is formed in the intermediate member 8 on the disk input side to match fluid passages 16 and 17 that communicate with the cylinders 6a and 7a of both the actuating members 6 and 7, and the hydraulic fluid of the actuating member 6 is The hydraulic fluid supplied from the hole 18 is supplied to the cylinder 6a and also to the cylinder 7a, so that the respective operating pistons 19 and 20 can be pushed toward the disk 1 side.

Friction pads 21 and 22 are inserted from the top of the caliper 5 and placed on both sides of the disk 1, and are provided with back plates 23 and 24, respectively. The ears 23a, 24a formed in the intermediate members 8, 9
It is slidably latched and suspended from the upper part of the bridge parts 8a, 9a.

Reference numeral 25 denotes a pad spring body, and as shown in FIG. 4, the mounting portion 25a and the pad pressing portion 25b are bent slightly wider than a right angle to provide spring force. It is fixed to the side wall of the bridge portion 9a of the intermediate member 9 with screws 26. As a result, the pad pressing part 25b covers the upper part of the bridge part 9a, and its upper surface covers the disc retraction side ears 23a, 2 of the pad back plates 23, 24.
4a and springs toward the outer circumference of the disk, thereby preventing the support pins 27 (described later) from being inserted into the caliper 5.
a is raised above the upper surface of the bridge portion 9a. Note that this pad spring body 25 is attached to the ears 23a, 24a of the pad back plates 23, 24, respectively.
It may be fixed to Moreover, this pad spring body 25 is attached to the mounting portion 2 as shown in FIGS. 5 and 6.
5a and the pad pressing portion 25b are the spring portion 25.
The spring portion 25c is formed in a loop shape outward from the ear portion 24a of the pad back plate 24. And the mounting part 25
Locking pieces 25d, 25d are bent inward and formed on both sides of a, and are assembled by engaging with the side wall of the bridge portion 9a, and fixed with screws 26.

The support pin 27 straddles the disk 1 from the actuating member 6 on the disk retrieval side of the caliper 5 and presses the pad back plates 23 and 24 toward the center of the disk, with the pad spring body 25 being compressed. It is inserted through and comes into contact with the upper part of the pad back plates 23 and 24. This support pin 27 is attached to the padded back plate 2.
A through-hole may be formed in the upper part of 3 and 24, and it may be inserted into this through-hole.

As a result, the pad spring body 25 causes the disk retracting side ears 23 of the pad back plates 23 and 24 to
An upward force acts on a and 24a, and a downward force acts on the opposite disc rotation side ears 23a and 24a, with the support pin 27 serving as a fulcrum.
To prevent rattling and lifting of friction pads 23 and 24 during braking.

When this support pin 27 is inserted into the disc insertion side of the caliper, the downward force generated on the ears 23a, 24a of the pad back plates 23, 24 on the disc insertion side increases, and the friction pad 2 during braking increases.
Although a better effect can be obtained in terms of preventing the discs 3 and 24 from lifting up, the friction pads 23 and 24 move toward the disk rotation side during braking, resulting in a so-called clicking sound. It is provided on the disc rotation side of the caliper 5. A clip 28 is fixed to the intermediate member 9 on the disk rotation side with a screw 29, and is engaged between the flanges 27a of the support pin 27 to prevent the support pin 27 from coming off. When this clip 28 is pushed down in the direction of the arrow in FIG. 1, the support pin 27 can be easily removed, thereby allowing both friction pads 23 and 24 to be pulled out above the caliper 5.

Although the above embodiment has been described with respect to an opposed piston type disk brake, the present invention is not limited to this and can be similarly implemented in a floating caliper type disk brake, and further the caliper may be of either an integral type or a split type.

Since the present invention is constructed as described above, the friction pads are securely attached to both sides of the disc, and do not rattle or lift during braking, allowing stable and reliable braking to be performed at all times. In addition, friction pads can be easily and reliably replaced with one touch by removing one support pin.
This has the effect of significantly improving replacement work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a sectional view of Fig. 2, and Fig. 4 is a pad spring body. FIG. 5 is a perspective view showing another embodiment of the pad spring body, and FIG. 6 is a sectional view showing the pad spring body of FIG. 5 in an assembled state. 1 is a disk, 5 is a caliper, 6 and 7 are its operating members, 8 and 9 are intermediate members thereof, and 8a, 9a
is the bridge part, 21 and 22 are the friction pads, 2
3 and 24 are pad back plates, 23a and 24a are ears thereof, 25 is a pad spring body, and 27 is a support pin.

Claims (1)

[Scope of utility model registration request] A pair of friction pads inserted through the window formed in the upper part of the caliper slidably lock the ears on both ends of the pad back plate to the bridge parts on the disc insertion side and the disc rotation side of the caliper. In a vehicle disc brake that is suspended from a caliper, the pad spring body that straddles the disc is fixed only to the bridge part on the disc rotation side, and
The spring part of the pad spring body is interposed with a gap between the bridge part and the ear part of the pad back plate so as to maintain elastic force in the direction of the outer circumference of the disc, and the support is inserted into the caliper so as to straddle the disc. Place the pin between the ears of the pad back plate on the upper part of the disc rotation side so as to compress the spring part of the pad spring body and press the ear of the pad back plate on the disk rotation side against the opposing bridge part. A vehicle disc brake characterized by being connected or inserted.