JPS59217023A - Disk brake device - Google Patents

Abstract

PURPOSE:To improve the durability of a friction pad by engaging a first stopping projection provided on one side edge of a friction pad holding board with a recess groove of a friction pad stopper and making a hanger pin pass through the opening of a second stopping projection on the other side edge. CONSTITUTION:One side edge, on which a first stopping projection 20a is provided, of a holding board 20 is brought in contact with the pressure receiving face of a pad stopper 6a provided in an integrated form with a bracket 6, and the first stopping projection 20a is removably and slidably engaged with a recess groove 6b formed on the pad stopper 6a. A minute gap DELTAX is provided between the end face of the first stopping projection 20a and the groove bottom of the recess groove 6b. The second stopping projection 20b is projecting from the body part of the holding board 20 in such a way that it turns aside from the bridge part 11a of a caliper body 11, and a hanger pin 23 passes through the opening 20c formed in the stopping projection 20b.

Description

[Detailed description of the invention]

The present invention relates to a disc brake device for vehicles such as motorcycles and tricycles, and particularly to a support structure for a friction band. In a disc brake device that brakes the wheel by pressing and clamping a disc grate fixed to the wheel hub with the friction pads of the caliper, the friction pads on the caliper in a disc brake device are supported by the caliper body as shown in Figure 1, for example. . In the figure,
01 indicates caliper body 'Y'. All caliper bodies are 01.
A pair of non-gauge bins 03 are installed in the caliper piston 02σ] pointing in the direction of operation! 2. This hanger bin 03G:, Ii friction hat 04 is supported slidably. This friction pad 04 is formed by a holding plate 05 and a lining 06 attached to the surface thereof.
Opening 05b of a pair of locking protrusions 05α protruding from
A pair of hanger bins 03 pass through. Further, one side edge of the friction pad 04 is in contact with a pad stopper 07 that is integrated with a caliper support member supported on the caliper. Therefore, during braking, the pair of caliper pistons 02 press the back surface of the holding plate 05, and the pair of hanger bins 03G
The friction pad 04 moves along this line, and the first lining 06 comes into sliding contact with the disc brake (D). At this time, the other friction band 11t7L is also in sliding contact with the pair of friction bands 11t7L and 1IliG in addition to the disk plate D. And, the first thing to do is to give both friction and brake anti-cover, bad stopper 0'7G. By the way, in a caliper with a 1fli structure, a straight line C1 connecting the two points where the central axes of the pair of galliva pistons 02 intersect with the friction pads 04, and a
(,・Due to the large distance l between the connecting straight lines C2, the friction pad 04 is pushed by the galiper piston 02 during braking.)・Due to the frictional resistance between the engine bin 03 and the holding plate 05. Then, the friction pad 04 tends to move as if tilting using the engaging portion as a fulcrum. This state is shown in FIG.
The angle θ formed by the two is θ<90°. In such an inclined state, the friction pad 04 comes into contact with the disc plate D1-
There is a possibility that uneven wear 7 of the lining 06 may occur. Furthermore, in order to avoid interference between the retaining plate 051713 retaining protrusion 05α and the caliper body 01, the caliper body 01 is required to protrude in the same direction as the retaining protrusion 05fZ, which increases the size of the caliper and causes an increase in weight. (Also, the lining 06 of the friction hat 04 is worn out.)
When replacing the friction pad 04Y, remove the hanger bin 03Y from the carrier body 01 and take out 1 friction pad 04Y. 1. If it does not move, this movement must be restricted by the caliper support member or the wheel hub that holds the disc plate D. Therefore, remove the entire caliper 1 and replace the friction rose DO4. 7 steps are required, and work efficiency is poor. The disc brake device of the present invention has been devised against this technical background, and a concave groove is formed on the pressure receiving surface of the friction pad stopper provided integrally with the caliper support side, and the friction pad is provided with a concave groove. A first locking protrusion provided on one side edge;
The first locking protrusion is slidably engaged with the concave groove, but the first locking protrusion is not in contact with the bottom of the concave groove, and is provided on the other side edge of the friction band. It is characterized in that a hanger bin is passed through the opening of the second locking protrusion. An object of the present invention is to improve the support structure of friction pads.

[Thus, the friction pad moves smoothly during braking,
Therefore, the durability is improved and the friction band can be replaced without removing the caliper. Hereinafter, one embodiment of the present invention will be explained in FIGS. 3 to 7. FIG.
The hydraulic caliper 10 shown in FIG. Support force λ1 on front fork 1. A wheel hub 3 is rotatably supported on an axle 2, and a wheel knob 3 is mounted on the axle 2.
A disc plate D is screwed onto the side of the
(see figure). In addition, a stay 4 protrudes from the rear of the lower end of the front fork 10, and the bracket 6 that controls the carrier support is screwed in using a pair of 7-ring bolts (hexagonal large side bolts) 5. I arrived at Jt. The caliper 10 has a pin bolt 7 and a flange bolt 8 on a stay 12 integrated with the caliper body 1.1.
The cover 1 is attached to the bracket 6. Its attachment is clearly seen in FIGS. 4 and 5. That is, stay 12
The screw bolt 7 is slidably fitted into the opening of the bracket 6. Further, the flange bolt 8 passes through the opening of the stay 12 via the collar 8a, and is screwed into the screw hole G of the bracket 6 at its tip. Therefore, the caliper body 11 can be displaced with respect to the bracket 6 due to the sliding relationship between the pin bolt 7 and the bracket 6 and the sliding relationship between the stay 12 and the collar 8a. In the figure, 7a, 8b, and 8c indicate rubber boots that prevent foreign matter (dust, muddy water, etc.) from entering the sliding contact portion G. Therefore, a pair of caliper cylinder chambers 11 A q are provided in the caliper body 11, and a plurality of seven lunge bolts 23 (L) are screwed onto the caliper cover 1375r. Also, a friction hat 15 consisting of a retaining plate 16, a lining 17, and a heat insulating plate 18 is engaged with the tip of a pair of cup-shaped caliper pistons 14 that fit into a pair of caliper cylinder chambers 11A. and the claw portion 1 of the caliper body 11
A friction pad 9 consisting of a holding plate 20, a lining 21, and a heat insulating plate 22 is engaged with 1b. One side edge of the retaining plate 20 of the friction pad 19 (L is provided (L is provided), and the second locking protrusion 20 is A first locking projection 20b is provided (see FIG. 6). One side edge of the retaining plate side having the first locking projection 200 is a bracket) 6.!=-fl; A stopper for a friction bat (hereinafter referred to as a band stopper) 6a av The first locking protrusion 20a is in contact with the pressure-receiving surface and can be freely fitted into and removed from the recessed groove 66 formed in the band stopper 6a. The concave groove 6h is oriented in the direction of movement of the caliper piston 14, and the concave groove 6h is oriented in the direction of movement of the caliper piston 14, and the concave groove 6h is oriented in the direction of movement of the caliper piston 14, and the concave groove 6h is oriented in the direction of movement of the caliper piston 14.
A minute gap ΔX is provided between the groove bottom and the groove bottom. The first locking protrusion 20 (L is located on a straight line connecting the points where the central axes of the pair of caliper pistons 14 intersect with the retaining plates 20. The locking protrusion 20b is located outwardly (G in FIG.
The locking pin 23 protrudes from the main body of the holding plate 200 as if escaping in the direction of the arrow (in the direction of the arrow), and passes through an opening 20C formed in the locking protrusion 20b. The friction pad 15 has a plane symmetrical shape with the friction pad 19, and the retaining plate 16 is provided with a first locking protrusion 16 (L) and a second locking protrusion 16b, similarly to the retaining base side. A friction hat 15σ] first locking protrusion 1 is formed in a pair with the butt stopper 6a, and is formed in a recessed groove formed in the bracket 6 and the pair of butt b flange 6a.
6 (L can be fitted and removed freely and slidably engaged and the same No. 20 locking protrusion 16 b should be opened) The point that the A cigar bottle 23 is penetrated is also the same as in the case of the friction pad 19. As shown in Figure 7, the hanger bin is
) The pan cylinder chamber 11 A penetrates from the caliper body 11 to the claw portion 11 h, and a lock pin 24 for preventing removal is fitted into the distal end thereof. Also, the second σ]
The compression coil spring 25 is located between the engaging projection 16h and the hanger 23 (201) and the first one along the outer fitting. 15.1.9 This compression coil spring part acts so as to separate it from the disk dale) D. This embodiment is configured as described above, and When braking, if the hydraulic pressure inside the caliper ring chamber 11A is activated,
A pair of caliper pistons 14:6i move forward to the left at the 41st m, and the friction pad 15 pushes 1it to the 3rd (disc L--, which rotates in the circumferential direction at this point)
Slide into contact with D. At that time, the caliper body 11 received a reaction force to the right as shown in Figure 4, causing the bottle water to fall. Sliding relationship between root 7 and bracket 6, and collar 8
Due to the sliding relationship between a and the stay 12, the displacement 1- to the right
reactor. In this way, the friction pads 19 are also displaced, and the Rt&gt; fig. hats 15.19 come into sliding contact with strong pressure so as to sandwich the disk plate D from both sides, and the desired braking is performed. Therefore, the movement of the friction pad 15 when pushed by the caliper piston 14 is smoother than the movement of the friction pad 04 shown in FIGS. 1 and 2. The first locking protrusion 16a is located on the straight line connecting the two points where the central axes of the pair of caliper pistons 14 intersect with the retaining plate 16 (corresponding to the straight line in FIG. 6). In addition, the opening of the second locking protrusion 16b has a small interval between the hanger bin 23 passing through the opening and the straight line.
1 friction button 15 when pushed by 1 button piston 14
The moment that tends to tilt the pad stopper is also small, and the friction pad 15 is smoothly displaced in the correct posture along the concave groove of the pad stopper and the ringer bin 23, and uneven wear of the lining 17\21 does not occur. . This type of movement is guaranteed even when the friction pad 19 slides into contact with the disk dale (D) and receives the reaction force Z. In addition, during braking, the braking reaction force acting on the disc sag (D) from each friction pad 15.19 is generated by the side of each retaining plate 16.20 (the side having the first locking protrusion 7) and the band stopper. Contact relationship with pressure receiving surface of 6a

[Please be supported by the pad stopper 6a.] Therefore, G is applied to the contact area.
Well, a lot of pressure is applied, but friction pad 1.
The locking protrusion tez, 20a of each node in 5.19 and the recess Rσ of the pad stopper) fR bottom a> ifl,
Since the interval Δx is provided as shown in Fig. 6G, the first locking protrusion 16 (Z % 20σ is not subjected to immediate force and no deformation occurs), and the recess is closed. A slidable locking relationship is ensured (which can be freely inserted into and removed from the groove). Furthermore, when braking is completed and the hydraulic pressure in the caliper cylinder y11A is released, each friction pad 15, ]9 is pushed back by the elastic restoring force of the square seal provided on the outer periphery of the piston 14. However, in this embodiment, since the compression fill spring 25 is inserted between the second locking protrusions 16 b and 20 b, both friction hats 15
．． 19 is a compression coil spring 25 tl] Due to the elastic restoring force, the lining 17.2 of the image friction hat 15.19 is forcibly pushed back and is actually pushed back when not braking.
However, the first thing I did was touch the disc plate D. There's nothing wrong with that. In addition, if the lining 17.21 of the friction pad 1.5.19 is worn out to the extent that the lining 17.21 of the friction pad 1.5.19 is worn out due to use, the hanger bin 23 is removed from the carrier body 11 and both friction pads 15.19 are removed. 6, pull it out downward, then insert the new friction button, and check the hanger 23. This replacement work is extremely easy without removing the caliper 10. I can do it. This is the first advantage you get. The friction pad 1 is
First locking protrusions 16a, 20a are provided on the side edges of the friction pads 15.
This is because it was provided on the other side edge of No. 19 and engaged with the hanger bin. In particular, the second A-type stop protrusion 16h,
20b, Briarage part 11 of caliper body 11
(By protruding outward from L, the friction band can be easily attached and detached. Moreover, the bridge portion 11 (ZY) can be brought closer to the friction pad side, and the caliper 10 As is clear from the description of the first embodiment above, in the present invention, a concave groove is formed on the pressure receiving surface of the friction pad stopper provided integrally with the caliper support member. The first locking protrusion provided on one side edge G is engaged with the recessed groove in a freely fitting and detachable manner and slidably).What is the first locking protrusion and the groove bottom of the recessed groove? The second locking protrusion was made to pass through the opening of the second locking protrusion provided on the other side edge of the friction pad so that it did not come into contact with the opening of the second locking protrusion (on the other side edge of the friction pad). Sodo σ] The lining can be brought to the 1st rule.・During braking・Prevents the phenomenon of one friction band being displaced in an inclined position with respect to the disc plate.Also, during braking, the friction pad Although it is pushed against the pressure receiving surface of the stopper with strong pressure, the first locking protrusion and the groove bottom do not come into contact with each other, so no force of 7J is applied to the first locking protrusion. Therefore, the deformation of the locking protrusion does not occur, and a smooth sliding engagement relationship with the recessed groove is guaranteed.Furthermore, when replacing the friction pad, the caliper It can be easily attached and detached by simply pulling out the 71 ringer bin from the caliper body without removing it.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the main parts of a known disc brake device, FIG. 2 is an explanatory diagram showing its operation mode, and FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3) FIG. 5 is a sectional view taken along the line V-V in FIG. 3, and FIG. is shown in Figure 4 ('Vl −
VI line sectional view, Figure 7 is Vll-V at Figure 3G.
It is a ll line sectional view. 1... Front fork 12... Axle, 3-°° wheel hub, 4... Stay, 5-°" flange bolt, 6... Bracket, 6a... Friction band stopper, 6h...・Concave groove, 7... Bin bolt, 8...
・Flange bolt ・8a...Collar, 10...Caliper, 11...Caliper body, 11
A... Gear 11 handling chamber, 11α... Bridge part, 11b... Claw part, 12... Stay, 13...
・Caliper cover, 13α...flange bolt \14
...Caliper piston, 15...Friction pad, 16
...Retaining plate, 16 (L...first locking protrusion, 16
b...Second locking protrusion, 17...Lining, 18
... Thermal analysis, 19... Friction band, 20... Holding plate, 20a... First locking protrusion, 20 b... Second locking protrusion, 20C... Opening, 21...Lining, 22.Insulation &, 23...Nohengerhin, 24
...Lock bin, 25...Compression coil spring O
Representative Patent Attorney Nozomi Ehara (1 person) Figure 1 Figure 2 Figure 4 Figure 4 2 r) Figure 6 6a ' zuc '\

Claims (1)

[Claims] A concave groove oriented in the movement direction of the caliper piston is formed on the pressure receiving surface of the friction pad stopper provided integrally with the caliper support member, and a groove is formed on one side edge of the retaining plate of the friction pad consisting of at least a lining and a retaining plate. In addition to providing a first locking projection, a second locking projection is provided on the other side edge of the holding plate, and the friction band is connected to the first locking projection and the recessed groove. The caliper support member is supported in a removable and slidable manner in an engagement relationship, and is supported on the caliper body by a hanger bin passing through the opening of the second locking protrusion. - A disc brake device characterized in that a space is provided between the locking protrusion and the groove bottom of the recessed groove.