GB2051981A - Caliper for supporting pad assemblies of disc brake for two- wheeled vehicle - Google Patents
Caliper for supporting pad assemblies of disc brake for two- wheeled vehicle Download PDFInfo
- Publication number
- GB2051981A GB2051981A GB8015654A GB8015654A GB2051981A GB 2051981 A GB2051981 A GB 2051981A GB 8015654 A GB8015654 A GB 8015654A GB 8015654 A GB8015654 A GB 8015654A GB 2051981 A GB2051981 A GB 2051981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caliper
- disc brake
- portions
- disc
- pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The caliper 11, primarily for a two-wheeled vehicle, has a bridge 19 straddling a disc and through which passes a pad assembly support pin 20. A recess 17 of the caliper forms side portions 25 having respective side surfaces a and lower surfaces b. Pad assemblies 12, 13 for use with the caliper have respective backing plates 12b, 13b, each of which has a protruding portion 18 for insertion within the recess 17 and through an oblong slot 21 passes the pin 20. Shoulder portions 23, 24 of the backing plates engage the side surfaces a of the caliper side portions 25 and the surfaces b engage upper surface portions of the backing plates 12b, 13b. Braking torque is reacted on said surfaces a and b. <IMAGE>
Description
SPECIFICATION
Structure for supporting pad assemblies of disc brake for two-wheeled vehicle
The present invention relates to a disc brake for use with a two-wheeled vehicle and more particularly to a structure for supporting a pad assembly of a floating type disc brake.
A conventional floating type disc brake for a two-wheeled vehicle as shown in Figure 1 of the accompanying drawings comprises a disc A, a caliper 1 including a caliper cylinder 4 and a caliper arm 7, two pad assemblies 2 and 3 disposed on either side of the disc A, the former being disposed on the cylinder side of the caliper 4 and the latter being disposed on the wheel (not shown) side thereof, and a piston 5 incorporated in the caliper cylinder 4. The pad assembly 2 on the cylinder side of the caliper is received and supported in a receiving portion 6 formed at the open end of the caliper cylinder 4. The pad assembly 3 on the wheel side of the caliper is supported by the caliper arm 7.
The conventional disc brake described above is advantageous in that it is not necessary to provide a stationary member adapted to be coupled to the fork of the vehicle to support the pad assemblies.
However, it has the drawback that it is necessary to provide the receiving portion 6 at the open end of the caliper cylinder 4 in order to receive and support the pad assembly 2 on the cylinder side of the caliper. In addition, it is also necessary operatively to support the pad assembly 2 within the receiving portion 6 when the pads 2a and 3a wear and it is therefore necessary to increase the thickness of the pad assembly 2 on the cylinder side by as much as the amount of effective wear of the pad assembly 3 on the wheel side. As a result, the respective thicknesses of the pad assemblies 2 and 3 differ, and the length of the caliper cylinder becomes longer.
An object of the present invention is to provide a floating type disc brake caliper for a twowheeled vehicle in which the support of the pad assemblies is achieved in an improved manner, whereby the length of caliper cylinder and the thickness of pad assemblies are reduced to a required minimum, and which enables pad assemblies to be used which have the same thickness.
According to the invention, a disc brake caliper for use primarily on a two-wheeled vehicle comprises a caliper bridge arranged, in use, to straddle a disc rotatable with a wheel of the vehicle, and adapted to receive a pair of pad assemblies each including a backing plate and a layer of friction material, each backing plate having a protruding portion extending from an inner peripheral portion thereof and a pair of shoulder portions extending from respective end peripheral portions, all of said portions extending radially outwardly in relation to the disc when in use, a support pin extending through the caliper
bridge and arranged to pass through the
protruding portions of the pad backing plates to
support the latter with clearance transverse to the
pin direction, and side portions formed on the
caliper bridge and adapted to be interposed, in
use, between the protruding portion and shoulder
portions of each pad assembly, whereby the side
portions of the caliper bridge are brought into
abutment with the inner surfaces of said shoulder
portions and the upper surfaces of the backing
plates in order to react braking torque arising on
the pads during braking of the disc.
The present invention will now be described by
way of example, with reference to the
accompanying drawings in which: Figure 1 is a sectional view of a conventional
disc brake;
Figure 2 is a sectional view of one form of the
disc brake of the present invention, and
Figure 3 is a cross-sectional view taken along
line X-X of Figure 2.
Figures 2 and 3 show an exampie of the disc
brake of the present invention which is a floating
type disc brake for a two-wheeled vehicle. The
disc brake comprises, in similar manner to a
conventional disc brake, a disc A, a caliper 11, pad
assemblies 1 2 and 1 3 disposed on opposite sides
of the disc A, the former being disposed on the
cylinder side of the caliper and the latter being
disposed on the wheel (not shown) side, and a
piston 1 5 incorporated in the caliper cylinder 14.
The caliper 11 includes a caliper bridge 1 9 straddling the periphery of the pad assemblies 12
and 1 3 and a caliper groove 1 6. A recess 17 is
formed in the groove 1 6 of the caliper 11 extending parallel to the axis of the disc A thereby forming side portions 25, as particularly shown in
Figure 3. The pad assemblies 12 and 13 include
backing plates 1 2b and 1 3b, respectively, each of which has a protruding portion 1 8 extending from the central periphery of the backing plate radially outwardly of the disc A.The protruding portion 18 of each backing plate is adapted to be inserted into the recess 17 of the caliper 1 The protruding portion 18 has an oblong slot 21 having a longitudinal axis perpendicular to the axis of the disc A, into which a pad pin 20 is loosely inserted. At the tip end of the pad pin 20, a split pin 22 is inserted so as to prevent the unwanted removal of the pad pin 20. Thus, the pad assemblies 12 and 1 3 are supported by inserting the pad pin 20 through the bridge portion 1 9 and the oblong slots 21- of the pad assemblies.
Each of the backing plates 1 2b and 1 3b of the pad assemblies 12 and 13 has a pair of shoulder portions 23 and 24 which extend from both end portions of the periphery of the backing plate radially outwardly of the disc A, as shown in
Figure 3. The side portions 25 of the caliper bridge 1 9 are interposed between the protruding portion 18 and the shoulder portions 23 and 24 and in abutment with the inner surfaces of said shoulder portions, and also in abutment with the upper surfaces of the backing plates 1 2b and 1 3b.
Accordingly, the brake torque applied to the pad assemblies 12 and 13 is reacted by the abutting surface a of both side portions 25 of the caliper bridge 19 from the inner surfaces of the shoulders 23 and 24 of the backing plates 1 2b and 1 3b. and also by the abutting surface b of the side portions 25 of the caliper bridge 19 from the upper surfaces of the backing plates 1 2b and 1 3b.
The caliper of the present invention constructed as described above has the following appreciable merits: (1) Since the pad assemblies are supported by a single pin running through the caliper bridge, it is not necessary to provide a receiving portion for receiving the pad assemblies within the caliper cylinder. Therefore, the length of the caliper cylinder can be reduced to a required minimum.
(2) Both pad assemblies can have the same thickness and furthermore, the thickness can be reduced to the required minimum.
t3) The brake torque resulting from braking operation is not reacted by a pad pin, but by the abutting surfaces of both side portions of the caliper bridge against which abut the inner surfaces of the shoulder portions of the backing plates, and by the surfaces of both side portions of the caliper bridge against which abut the upper surface of the backing plate. Therefore, even if the brdke torque is great, the pad pin will not crack.
Claims (5)
1. A disc brake caliper for use primarily on a two-wheeled vehicle and comprising a caliper bridge arranged, in use, to straddle a disc rotatable with a wheel of the vehicle, and adapted to receive a pair of pad assemblies each including a backing plate and a layer of friction material, each backing plate having a protruding portion extending from an inner peripheral portion thereof and a pair of should portions extending from respective and peripheral portions, all of said portions extending radially outwardly in relation to the disc when in use, a support pin extending through the caliper bridge and arranged to pass through the protruding portions of the pad backing plates to support the latter with clearance transverse to the pin direction and side portions formed on the caliper bridge and adapted to be interposed, in use, between the protruding portion and shoulder portions of each pad assembly, whereby the side portions of the caliper bridge are brought into abutment with the inner surfaces of the backing plates in order to react braking troque arising on the pads during the braking of the disc.
2. A disc brake caliper according to Claim 1 wherein the support pin is removable to permit removal of the pads from the caliper.
3. A disc brake caliper, substantially as hereinbefore described with reference to Figures 2 and 3 of the accompanying drawings.
4. A disc brake incorporating a caliper according to any one of Claims 1 to 3.
5. A disc brake substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6466079U JPS612360Y2 (en) | 1979-05-11 | 1979-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2051981A true GB2051981A (en) | 1981-01-21 |
Family
ID=13264587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8015654A Withdrawn GB2051981A (en) | 1979-05-11 | 1980-05-12 | Caliper for supporting pad assemblies of disc brake for two- wheeled vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS612360Y2 (en) |
| GB (1) | GB2051981A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2322676A (en) * | 1997-02-19 | 1998-09-02 | Montalvo Corp | Modular brake with replaceable friction pads |
| CN116215726A (en) * | 2021-12-03 | 2023-06-06 | 株式会社岛野 | Brake pad for bicycle |
-
1979
- 1979-05-11 JP JP6466079U patent/JPS612360Y2/ja not_active Expired
-
1980
- 1980-05-12 GB GB8015654A patent/GB2051981A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2322676A (en) * | 1997-02-19 | 1998-09-02 | Montalvo Corp | Modular brake with replaceable friction pads |
| CN116215726A (en) * | 2021-12-03 | 2023-06-06 | 株式会社岛野 | Brake pad for bicycle |
| US12123468B2 (en) | 2021-12-03 | 2024-10-22 | Shimano Inc. | Brake pad for a bicycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS612360Y2 (en) | 1986-01-25 |
| JPS55163549U (en) | 1980-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |