JPS589004Y2 - Clip to prevent disc brake pad retaining pin from coming out - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clip that prevents a pad holding pin of a disc brake from coming off, and in particular, its purpose is to facilitate the attachment and detachment of the clip.

Conventionally, as shown in FIG. 3, this type of clip has been made by bending the insertion parts 2, 2 of the clip main body 1 formed of spring wire outward, and adjusting the distance between the ends of the insertion parts 2 and 2 by using a pad holding pin. There is a case where the distance between the through holes 3a and 3a of 3 and 3 is narrower.

In such a clip, both insertion parts 2, 2 are connected to the through hole 3.
a, 3a, the tips of the insertion portions 2, 2 are in the through hole 3.
a, 3a, so that the clip main body 1 is prevented from coming off, but the insertion portions 2, 2 of the clip are
a, 3a, the image tips of the insertion parts 2, 2 must be pressed against the spring force to reduce the width between the image tips, and it is extremely difficult to perform this work in a narrow space. It was difficult.

In view of the above-mentioned problems, the present invention makes it possible to easily insert the two insertion parts of the clip into the through-hole without changing the distance between them, and also allows the clip to be attached and removed separately above the pad holding pin. Eliminates the need to form an operating part,
This makes it possible to simplify the shape of the clip and facilitate processing.

An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 and 2, 10 is a disc brake body, which has two legs 10a and 10b facing each other with a brake disc 11 in between. Neri, both legs 10a,
An opening portion 12 that opens upward is formed between the portions 10b.

Both legs 10a. A pair of left and right shaft holes 13 and 14 facing each other are formed in the pad 10b, and a pair of pad holding pins 15 and 16 are inserted between the shaft holes 13 and 14, respectively.

The pair of pad holding pins 15.16 extend in the axial direction of the disk 11 at intervals in the circumferential direction of the disk 11.
A pair of friction pads 17 and 18 facing each other with the brake disc 11 in between are mounted on the shaft 16 .

In the figure, reference numeral 19 is a piston that presses the negative friction pad 17, and 20 is a dust boot that seals between the piston 19 and the cylinder chamber of the leg portion 10a.

The disc brake main body 10 is supported slidably in the axial direction of the disc 11 with respect to a support member (not shown).

Through holes 15a are provided in the pad holding pins 15 and 16, respectively, close to the inner edge of the shaft hole 13 on the leg portion 10a side.

16a is formed, and clips 2 are provided in both page through holes 15a and 16a to prevent both pad holding pins 15 and 16 from coming off.
1 is installed.

The clip 21 is made of a single piece of wire having spring properties, and has through holes 15a that are parallel to each other.

16a, and the outer side of a pair of butt holding pins 15.16 from the rear ends 22a, 22a of both insertion parts 22 (rear ends of the insertion parts 22.22 in the insertion direction). surface (a pair of retaining pins 15
．． When the pair of holding pins 15 and 16 are viewed from the axial direction of the disk 11 as shown in FIG. , and in the case of the right side holding pin 16, the pad holding pin 1 is folded back along the right side surfaces 15b and 16b to separate from each other, and the pad holding pin 1
5. Clamping parts 23, 23 that clamp 16, and both clamping parts 23
, 23 are folded back in a direction opposite to the folding direction (downward direction in FIG. 2) (upward direction in FIG. 2), and pass through the outside of the holding portion 23. Folded portion 2 between °23 and the insertion portions 22, 22
2a.

an extension part 24 24 that extends upward in FIG.
It consists of 5.

Here, the connecting portion 25 forms an attachment/detachment operation portion 26.

In a free state where no external force is applied to the clip 21, the insertion portion 22.22 is connected to the extension portion 24° 24 and the connection portion 25.
Therefore, the through holes 15a and 16a are spaced from each other parallel to each other and are parallel to each other.

On the other hand, when the disc brake main body 1o is mounted on a vehicle, both the holes 15a and 16a of the pad holding pins 15 and 16 cannot be seen from above depending on the mounting position. Notch 2
7.27 is formed on the leg portion 10a, and both notches 2
7 and 27 also serve as guide grooves for a tool when the attachment/detachment operation portion 26 of the clip 21 is pulled up by the tool.

When attaching the clip 21 configured as described above to the pad holding pin 15° 16, the interval between the insertion portions 22° 22′ of the clip 21 matches the interval A when the through holes 15a and 16a are parallel, so both insertion portions There is no need to widen or shorten the interval between the two insertion portions 22, 22 when inserting the 22° 22.

Moreover, the insertion portions 22.22 are aligned with the notch portions 27.22.
This can be done very easily since it can be done while looking at the through holes 15a and 16a from diagonally upward through the hole 27.

Then, both insertion portions 22, 22 are inserted into both page through holes 15a.

When fully inserted into 16a, both insertion parts 22°22
The pad holding pins 15 and 16 are held between the holding parts 23 and 23, respectively, and at this time, both the insertion parts 22 and 22
The minimum width between the pad holding pins 15, 16 and the outer surface 15b of the pad holding pins 15, 16 is
, 16b, the clip 21 will not come out from both pins 15, 16.

In addition, in the present invention, "clamping" refers to a case where both the insertion parts 22, 22 and the clamping parts 23, 23 elastically abut against and clamp the pad holding pins 15 and 16, as shown in FIG. This includes a case where the insertion parts 22, 22 and the clamping parts 23, 23 do not come into elastic contact with the pad holding pin 15, 16, but clamp it with a slight gap.

To remove the clip 21 from both pad holding pins 15 and 16, insert a screwdriver or the like into the notches 27, 27, aim the tip of the screwdriver below the attachment/detachment operation part 26 of the clip 21, and use the screwdriver to remove the attachment/detachment operation part 26. Push up 26.

This causes the clamping part 23.23 to expand and the insertion part 22.
22 is pulled out from the through holes 15a and 16a.

Since the present invention has the above-mentioned structural functions, it has the following effects.

(1) The insertion portions of the clip are parallel to each other in the free state where no external force is applied, and the distance is the same as that of the mutually parallel through holes of the pair of pad holding pins, so the insertion portions are placed in the through holes. When inserting, there is no need to widen or shorten the gap between the two insertion portions, and the insertion can be performed easily.

(2) Since the clamping part of the clip is arranged outside the pair of pad holding pins, the clamping part does not come into contact with the dust boot of the piston located below, eliminating the risk of damaging the dust boot.

(3) Since the clip has an attachment/detachment operation part that straddles a pair of pad holding pins, there is no need to separately form an attachment/detachment operation part above the pad retention pin, and the number of unnecessary bending parts can be reduced. This means that it can be reduced.

Therefore, the clip can be easily processed and formed, and the strength of the clip is increased because the bent portions, which are weak in strength, are reduced.

(4) The connecting part that spans a pair of pad holding pins and the extension part that follows this act to prevent the pad holding pin from being removed, and the insertion part acts to prevent the clip itself from being removed from the pad holding pin. Since the insertion part and the clamping part are surrounded, the insertion part and the clamping part are protected from the outside.

Therefore, even if a flying stone or the like collides with the clip, at least the insertion portion 22, the folded portion 22a1 and the clamping portion 24 will be spared from damage, and the pin removal prevention function can be maintained.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of a disc brake showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of ■■ in FIG. 1. FIG. 3 is a sectional view of the main parts of a disc brake showing a conventional clip. 10... Disc brake body, 15, 16...
Pad holding pins, 15a, 16a - through holes, 15b. 16b--outer surface, 21..., clip, 22a,
22a... folded part, 22, 22... insertion part, 23
．． 23... Holding part, 24, 24... Extension part, 25.
...Connection part, 26... Attachment/detachment operation part.

Claims (1)

[Claims for Utility Model Registration] Dislodgement of a pair of pad retaining pins that are installed on the disc brake body to support the friction pads and extend in the axial direction of the disc at intervals in the circumferential direction of the disc. The clip has insertion portions formed at both ends thereof and inserted into mutually parallel through holes provided in the pair of pad holding pins, and a rear portion of the insertion portions. a clamping part that is folded back from the end so as to be separated from each other along the outer surface of the pair of pad retaining pins, and clamps the pad retaining pin between the insertion part; are respectively folded back in opposite directions and extend through the outside of the clamping part and beyond the folded part between the clamping part and the insertion part, and both of the extensions extend so as to straddle the pair of pad holding pins. and a connecting part that connects the two insertion parts, and in a free state where no external force is applied to the clip, the two insertion parts are parallel to each other at the same spacing as the mutually parallel through-holes. , a clip characterized by.