GB1593353A - Disc brake arrangement for motor vehicles - Google Patents
Disc brake arrangement for motor vehicles Download PDFInfo
- Publication number
- GB1593353A GB1593353A GB7026/78A GB702678A GB1593353A GB 1593353 A GB1593353 A GB 1593353A GB 7026/78 A GB7026/78 A GB 7026/78A GB 702678 A GB702678 A GB 702678A GB 1593353 A GB1593353 A GB 1593353A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake
- caliper
- disc
- mounting
- brake 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.)
- Expired
Links
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 230000000295 complement effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- 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
- F16D55/2255—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 pivoted
-
- 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
- F16D55/227—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 by two or more pins
-
- 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
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/007—Pins holding the braking members
Description
(54) AN IMPROVED DISC BRAKE ARRANGEMENT FOR MOTOR VEHICLE'
(71) We, SUMITOMO ELECTRIC IN
DUSTRIES, LTD., of 15, Kitahama 5chome, Higashi-ku, Osaka, Japan, a
Japanese body corporate, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
The present invention relates to a disc brake arrangement of the caliper type for motor vehicles.
There has heretofore been known a hydraulically actuated disc brake arrangement of the caliper type for motor vehicles comprising a brake disc mounted on an axle for rotation with a wheel and a brake caliper movably mounted on a stationally part of the vehicle relative to the brake disc. The brake housing or caliper is of a generally inverted U-shape and has two arms, one on either side of the brake disc so as to embrace a peripheral portion of the disc. A hydraulic actuator is disposed in one arm to actuate directly a brake pad assembly, while other brake pad assembly is disposed in the other caliper arm. The two brake pad assemblies are so positioned that when the hydraulic actuator is in operation the pad assemblies press upon opposite sides of the brake disc.
In such a disc brake arrangement, there has been known a structure in which the brake pad assemblies are mounted individually on the associated caliper arms in such a manner that the removal of the brake pad assemblies for replacement, repair, inspection or like services is permitted only after the caliper has been disassembled, involving time-consuming and troublesome procedures. Also there has been known a structure in which mechanical components for mounting the caliper on the stationary part of the vehicle such as bolts, screws or the like have to withstand disadvantageously a high torque upon application of the brake.
An object of the invention is to provide a disc brake arrangement of the caliper type which overcomes the disadvantages of known arrangements as described above.
Another object of the invention is to provide a disc brake arrangement of the caliper type for motor vehicles which allows easy removal of the brake pad assemblies without it being necessary to disassemble the brake housing or caliper.
Still another object of the invention is to provide a disc brake arrangement in which a major portion of the torque produced upon application of the brake can be directly transmitted to a stationary part of the motor vehicle, thereby allowing the disc brake to be arranged as a compact and inexpensive structure.
A further object of the invention is to provide a caliper type disc brake arrangement of simple structure which is particularly suitable for use with motor bicycles.
The present invention consists in a disc brake arrangement for a motor vehicle comprising:
a brake disc;
a brake caliper disposed to straddle said brake disc and having first and second arms which embrace therebetween at least partially a peripheral portion of said brake disc;
means for movably mounting said brake caliper on a stationary part of said vehicle relative to said brake disc;
first and second brake pad assemblies disposed between said brake disc and said first and second caliper arms, respectively;
means for swingably coupling said first and second brake pad assemblies on said brake caliper;
brake actuating means disposed in said brake caliper and adapted to press directly one of said first and second brake pad assemblies against said brake disc and press indirectly the other brake pad assembly against said disc through movement of said caliper upon application of brake;
abutment means formed integrally with said stationary part adjacent one of said first and second caliper arms and adapted to rclcasably engage with said one brake pad assembly, thereby to hold said one brake pad assembly at a predetermined operative position in co-operation with said coupling means to suppress rotational movement of said one brake pad assembly about said coupling means caused by said brake disc upon application of the brake; and
retaining means provided in combination with the other caliper arm and adapted to releasably engage with said other brake pad assembly, thereby to hold said other brake assembly at a predetermined operative position in co-operation with said coupling means to suppress rotational movement of said other brake pad assembly about said coupling means caused by said brake disc upon application of the brake.
In the accompanying drawings:
Figure I is an elevational view showing a disc brake according to a first embodiment of the present invention:
Figure 2A is a vertical sectional view of the same taken along the line 11 - 11 of
Figure 5; Figure 2B is a fragmental sectional view showing a partial modification of the disc brake shown in Figure 2A;
Figure 3 is a sectional view taken along the line llI - Ill of Figure 1; Figure 4 is a side elevation as viewed from the left-hnnd side of Figure 1 showing a caliper arm with a brake pad assembly mounted thereon;
Figure 5 is a plan view of the disc brake shown in Figure 1;
Figure 6 is a sectional view taken along the line VI - Vl of Figure 5;
Figure 7A is an elevational view showing a caliper mounting projection formed in a stationary part of a motor vehicle.
Figure 7B is a plan view of the same;
Figure 7C is a side view of the same;
Figure 8 is a view similar to Figure 3 showing another embodiment of the disc brake according to the present invention in a section taken along the line Vlll - Vlll in
Figure 10;
Figure 9 is a side elevation of the same as viewed from the left-hand side of Figure If); Figure 10 is a sectional view taken along the line X - X of Figure 9;
Figure 11 is a view similar to Figure 5, but showing the disc brake shown in Figure 8; ,';igure 12 is an underside plan view of a brake pad assembly of the disc brake shown in Figure 8; and
Figure 13 is a sectional view taken along the line XIII - XIII in Figure 9 showing the brake pad assembly of Figure 12.
Same or similar reference numerals are used for designate same or similar parts throughout the figures.
In the drawings. Figures 1 to 7 show a first embodiment of caliper type disc brake arrangement which is mounted on a motor bicycle. Referring first to Figures 1 and 2A, the disc brake 10 comprises a brake disc 11 mounted on an axle (not shown) for rotation with a wheel (not shown). As is well-known, the wheel is mounted on the axle which is securely supported by a bifurcated member (herein referred to simple as fork) which constitutes a stationary part of the motor bicycle. Disposed to straddle the brake disc 11 is brake housing or caliper 12 of a substantially inverted U-shaped configuration which comprises an inner arm 12A and an outer arm 12B interconnected integrally by a cross portion 12C. Thus, the caliper 12 embraces a peripheral portion of the brake disc 11. In this connection, it is to be noted that the term "inner" is used to designate elements disposed adjacent to the wheel, while the term "outer" designates elements located relatively far from the wheel; thus the wheel is located at the left-hand side of the inner caliper arm 12A as viewed in
Figures 1 and 2, although it is not shown in the drawings.
The disc brake 10 is adapted to be mounted on the fork 13. As is shown in
Figures 5 and 6, a pair of lateral projections 14A and 14B are integrally formed at a side of the cross portion 12C with a predetermined distance therebetween. These lateral projections are formed with respective holes for receiving fixedly therethrough a mounting or guide pin 15 which slidably extends through a mounting plate or block 16 formed integrally with the fork 13, which will be described in more detail hereinafter.
It is to be noted however that the distance between the paired lateral projections 14A and 14B is selected to be greater than the thickness of the mounting plate 16 so that the whole caliper 12 can be reciprocably displaced transversely relative to the brake disc 11 as guided by the mounting pin 15 received axially slidably in a bore 17 formed in the supporting plate 16 (Figure 6). The outer arm 12B has a lower end portion (Figure 2A) in which a throughhole 18 is formed to receive slidably therein a mounting or supporting bolt 19 through a spacer sleeve 20 made of a rigid material such as metal. As can be best seen from Figure 2A, the mounting bolt 19 is fixedly secured to the supporting plate 16 at the threaded end portion thereof received in a correspondingly threaded hole 21 formed in the supporting plate 16. Reference is also to be made to
Figure 7C. It will now be understood that the caliper 12 is mounted on the supporting plate 16 integrally formed with the fork 13 so as to be reciprocably movable transversely relative to the brake disc 11 as guided by the upper mounting or guide pin 15 and the lower mounting bolt 19. The sleeve 20 ensures a smooth and snug movement of the caliper 12.
Referring to Figure 2A, a cylindrical recess 22 is formed in the outer arm 12B at the inner side thereof. A cylindrical piston member 23 is slidably accommodated within the cylinder 22 in a fluid-tight manner as indicated by an O-ring seal 24. An hydraulic chamber 25 is defined between the bottom wall of the cylindrical recess 22 and the end surface of the piston member 23 and communicated hydraulically with a master brake actuating means (not shown) in known manner. Thus, it will be understood that the piston member 23 is reciprocably moved relative to the brake disc 11 in the direction perpendicular thereto parallel with the movement of the caliper 12 under a hydraulic brake pressure applied to the chamber 25. Reference numeral 26 denotes a dust proof cover. The cylinder 22 and the piston 23 constitute a so-called hydraulic brake actuator.
The piston number 23 has a free end which projects toward the brake disc 11 and bears on an outer backing plate 28B which in turn carries an outer brake pad 30B at the side facing toward the brake disc 11. The brake pad backing plate 28B has a unique profile and is supported according to the present invention, as will be made more apparent hereinafter.
Referring again to Figures 1 and 2A, the inner caliper arm 12A is adapted to support removably a backing plate 28A carrying a brake pad 30A which bears on the brake disc 11 at the inner side thereof in opposition to the brake pad 30B in a sandwiching manner, when the brake is applied. The manner in which the backing plate 28A with the brake pad 30A is supported by the inner caliper arm 12A will be described hereinafter.
With the arrangement of the disc brake described above, when the brake is applied through the conventional master cylinder (not shown), the hydraulic pressure within the cylinder chamber 25 is increased to move the piston member 23 toward the brake disc 11 i.e. to the left as viewed in
Figures 1 and 2A, as a result of which the backing plate 28B and hence the brake pad 30B carried thereon are pressed against the brake disc 11 at the outer side thereof. As the hydraulic pressure within the chamber 25 is further increased, the caliper 12 is in turn moved outwardly away from the brake disc 11, namely to the right as viewed in
Figure 2A as guided by the mounting pin 15 and the bolt 19, since the movement of the piston member 23 is stopped by the brake disc 11. The rightward or outward movement of the caliper 12 continues until the brake pad 30A supported by the inner caliper 12A bears against the brake disc 11 at the inner side thereof, thereby to apply the brake force to the brake disc 11 in co-operation with the braking pad 30B. The disc brake of this type is generally referred to as the floating type disc brake.
Next, reference is made to Figures 1 and 3 to 5 together with Figure 7 in particular. The outer caliper arm 12B has a lateral projection 31B formed at an upper portion thereof at the lateral side opposite to the projections 14A and 14B described hereinbefore with reference to Figures 5 and 6. On the other hand, the inner caliper arm 12A has a corresponding lateral projection 31A (see
Figures 4 and 5). These lateral projections 31A and 31B support an easily removable transverse rod 32 in respective holes, as best seen from Figures 1 and 5. The transverse rod 32 is loosely held by the lateral projections 31A and 31B in the corresponding holes and retained in place by a retaining pin 33 which is removably inserted into a diametrical bore formed in the transverse rod 32. When the retaining pin 33 is removed, the transverse rod 32 can be readily withdrawn from the bearing holes formed in the projections 31A and 31B.
Referring to Figure 3, the outer brake pad backing plate 28B has a lateral extension 34 formed at the side remote from the fork 13.
Formed in the lateral extension 34 is a hole 35 through which the transverse rod 32 slidably extends. In other words, the outer backing plate 28B with the brake pad 30B is axially slidably and swingably mounted on the transverse rod 32 at the lateral extension 34 and mechanically coupled to the caliper 12 only by means of the transverse rod 32, so that the outer backing plate 28B can be removed from the disc brake simply by withdrawing the transverse rod 32.
In order to position the outer brake pad backing plate 28B in place in spite of the swingable mounting thereof on the transverse rod 32, a unique profile or contour is imparted to the lateral side of the outer backing plate 28B located adjacent the fork 13, thereby to produce a geometrical or physical engagement between the free lateral side of the backing plate 28B and the mounting plate 16 formed integrally with the fork 13 as described hereinbefore. More specifically, the outer backing plate 28B has a substantially straight side edge 36 formed opposite the side on which the mounting extension 34 is formed. The side edge 36 extends radially of the disc brake 11 at the operating position of the brake pad 30B.
Additionally, a projection 37 is formed on the substantially straight side edge 36 of the outer backing plate 28B at a top portion thereof, The projection 37 has a lower edge 38 extending substantially perpendicularly to the straight side edge 36 as can be seen from Figure 3 and serves to suppress the tendency of the backing plate 28B to swing in the counterclockwise direction about the transverse rod 32 uppon application of the brake. On the other hand, the supporting plate 16 integrally formed with the fork 13 has a correspondingly profiled or contoured abutment portion to ensure the geometrically complementary engagement with the profiled side edge of the outer backing plate 28B. More specifically, referring to Figure 7C together with Figure 3, the profiled or contoured abutment portion formed in the mounting plate 16 is located between the hole 17 for receiving slidably the mounting and guide shaft 15 and the threaded hole 21 for fixedly receiving the guide bolt 19 and includes a straight edge portion 39 adapted to engage fittingly with the corresponding side edge 36 of the outer backing plate 28B and an offset edge portion 40 which is adapted to be engaged by the lower edge 38 of the projection 37 formed in the backing plate 28aB as described above. By virtue of such geometrically compllementary engagement between the free lateral side of the backing plate 28B and the profiled or contoured abutment edge portion formed in the supporting plate 16, the outer backing plate 28B can be securely held in the operating position although the plate 28B is mechanically coupled to the caliper 12 only through the transverse guide rod 32. Further, when the brake is applied, the torque applied to the outer backing plate 28B from the brake disc 11 rotating in the direction indicated by an arrow 41 in Figure 3 is directly transmitted in the fork 13 through the geometrically complementary engagement at 36; 39 and 38; 40 as indicated by an arrow 42. This means that undesirable stress applied to the supporting structure including the caliper, guide members 15 and 19 and the transverse rod 32 can be considerably reduced, whereby the whole disc brake structure occupies a relatively small size, in addition to the advantage that the outer backing plate 28B with the brake pad 3()B can be very easily removed for repair, exchange or like purposes by simply withdrawing the mounting rod 32, as described hereinbefore, without requiring the caliper to be disassembled from the fork 13.
In a similar manner, the inner backing plate 28A carrying the brake pad 3()A is supported so as to be removed in a simplified manner. To this end, the inner caliper arm 12A is formed with a semi-circular retaining recess 45, as shown in Figure 4 which is a side view as observed from the wheel. On the other hand, the inner backing plate 28A is formed with a pair of retaining protrusions 46 on the inner side thereof which are adapted to snugly engage with the semi-circular recess 45 at diametrically opposite positions relative to each other.
The inner backing plate 28A is further provided with a lateral projection 47 (Figure 5) corresponding to the projection 34 of the outer backing plate 28B and axially slidably and swingably mounted on the transverse rod 32 through an opening formed in the projection 47. In other words, the inner backing plate 28A with the brade pad 30A is mechanically coupled to the caliper 12 only through the transverse rod 32 and held at the operating position through the engagement between the retaining protrusions 46 and the retaining semi-circular recess 45 formed in the inner caliper arm 12A. When the brake is applied, torque applied to the inner backing plate 28A through frictional engagement between the pad 30A and the rotating disc 11 is transmitted through the caliper to the fork to be absorbed. For the removal of the inner backing plate 12A, the transverse rod 32 is first withdrawn and subsequently the backing plate 12A is rotated thereby to cause one of the retaining protrusions 46 to be disengaged from the semi-circular recess 45.
It is added that the thickness of the outer backing plate 28B and that of the profiled edge portion of the supporting plate 16 are so selected that the former will never be disengaged from the latter at the operating position regardless of the movement of the backing plate relative to the brake disc 11 upon applying the brake.
Figure 2B shows a partial modification of the disc brake arrangement described above with reference to Figures 1, 2A and 3 to 7.
In the modified embodiment, the lower guide bolt 19' is fixedly secured to the outer caliper arm 12B and slidably inserted into a closed sleeve 20' which is of a resiliently yieldable material to absorb any manufacturing tolerances and dimensional errors of the mcchanical elements such as caliper arms, bolt 19' and the like, as well as to absorb a possible deformation of the latter occurring during operation of the brake.
The sleeve 20' in turn is fixedly received in a hole 21 formed in the mounting plate 16.
The modified apparatus having the yieldable sleeve 20' ensures smoother movement of the caliper as compared with the arrangement shown in Figure 2A.
Figures 8 to 13 show a disc brake arrangement according to another embodiment of the invention, wherein like elements as those of the embodiments described above are identified by the same reference numerals. The disc brake arrangement shown in
Figures 8 to 13 is different from the embodiments shown in Figures 1 to 7 primarily in that the brake housing or caliper 12 of the former is swingably mounted on the fork 13 through a single rod or bolt 60, while the caliper 12 of the latter is mounted linearly movable relative to the brake disc 11 and the fork 13 through a pair of mounting and guide rods or bolts 15 and 19. Accordingly, in embodiment shown in Figures 8 to 13, the mounting plate or block 16 formed integrally with the fork 13 is correspondingly modified so as to fixedly receive the bolt 60, while the cross arm 12C is formed with through-hole 61 extending transversely thereof for receiving the bolt 60. A sleeve 62 effects a smooth guide for the swinging movement of the caliper. As compared with the disc brake shown in Figures 1 to 7 in which the caliper 12 is mounted on the fork 13 at two points, the caliper of the disc brake shown in Figures 8 to 13 is mounted on the fork 13 at a single point through the bolt 60. Thus, the latter is suited for use in a motor bicycle of a relatively small horse power. The remaining structure as well as operations of the disc brake just described are substantially similar to those described hereinbefore. Accordingly, any further description in detail is deemed to be unnecessary. It should, however, be again mentioned that the inner and outer backing plates 28A and 28B are mechanically coupled to the caliper only through the transverse rod 32 and held at the respective operative positions through the geometrically complementary engagement with the profiled or contoured portions formed in the inner caliper arm 12A and the mounting block 16, respectively. The torque applied to the outer backing plate 28B upon application of the brake is directly transmitted to the fork, while the torque applied to the inner backing plate 28A is transmitted through the mounting bolt 60 to the fork 13.
The inner and outer backing plates 28A and 28B carrying the respective brake pads 30A and 30B can be also removed for replacement, repair or the like purposes in a facilitated manner merely by withdrawing the transverse rod 32 which is mounted on the caliper arms so as to be also easily removable. The inner backing plate. 28A with the brake pad 30A shown in Figures 12 and 13 can be equally used in the embodiment shown in Figures 1 to 7.
In operation, the outer brake pad 30B is first caused to bear against the brake disc 11 at the outer side thereof under an increased hydraulic pressure in the chamber 25.
Thereafter, the caliper is rotated counterclockwise to cause the inner caliper arm 12A to press the brake pad 30A against the brake disc at the other side.
In the foregoing, the invention has been described in conjunction with exemplary embodiments. However, it will be appreciated that the invention is not restricted to such disclosed embodiments and modifications and variations will readily occur to those skilled in the art without departing from the scope of the appended claims. For example, the geometrical engagements between the backing plates and the mounting plate or block as well as the inner caliper arm may be realized in any suitable manner, so far as the backing plates can be held at the respective operating positions in cooperation with the transverse rod so that they may be easily removed without requiring disasssembly of the caliper. Further, although the disc brakes of the illustrated embodiments are designed for use with motor bicycles, they may be modified to use with other kinds of motor vehicles.
WHAT WE CLAIM IS:
1. A disc brake arrangement for a motor vehicle comprising:
a brake disc;
a brake caliper disposed to straddle said brake disc and having first and second arms which embrace therebetween at least partially a peripheral portion of said brake disc;
means for movably mounting said brake caliper on a stationary part of said vehicle relative to said brake disc;
first and second brake pad assemblies disposed between said brake disc and said first and second caliper arms, respectively;
means for swingably coupling said first and second brake pad assemblies on said brake caliper;
brake actuating means disposed in said brake caliper and adapted to press directly one of said first and second brake pad assemblies against said brake disc and press indirectly the other brake pad assembly against said disc through movement of said caliper upon application of brake;
abutment means formed integrally with said stationary part adjacent one of said first and second caliper arms and adapted to releasably engage with said one brake pad assembly, thereby to hold said one brake pad assembly at a predetermined operative position in co-operation with said coupling means to suppress rotational movement of said one brake pad assembly about said coupling means caused by said brake disc upon application of the brake; and
retaining means provided in combination with the other caliper arm and adapted to releasably engage with said other brake pad assembly, thereby to hold said other brake assembly at a predetermined operative position in co-operation with said coupling means to suppress rotational movement of said other brake pad assembly about said coupling means caused by said brake disc upon application of the brake.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (13)
1. A disc brake arrangement for a motor vehicle comprising:
a brake disc;
a brake caliper disposed to straddle said brake disc and having first and second arms which embrace therebetween at least partially a peripheral portion of said brake disc;
means for movably mounting said brake caliper on a stationary part of said vehicle relative to said brake disc;
first and second brake pad assemblies disposed between said brake disc and said first and second caliper arms, respectively;
means for swingably coupling said first and second brake pad assemblies on said brake caliper;
brake actuating means disposed in said brake caliper and adapted to press directly one of said first and second brake pad assemblies against said brake disc and press indirectly the other brake pad assembly against said disc through movement of said caliper upon application of brake;
abutment means formed integrally with said stationary part adjacent one of said first and second caliper arms and adapted to releasably engage with said one brake pad assembly, thereby to hold said one brake pad assembly at a predetermined operative position in co-operation with said coupling means to suppress rotational movement of said one brake pad assembly about said coupling means caused by said brake disc upon application of the brake; and
retaining means provided in combination with the other caliper arm and adapted to releasably engage with said other brake pad assembly, thereby to hold said other brake assembly at a predetermined operative position in co-operation with said coupling means to suppress rotational movement of said other brake pad assembly about said coupling means caused by said brake disc upon application of the brake.
2. A disc brake arrangement as claimed
in Claim 1, wherein said caliper mounting means includes a mounting block adapted to be formed integrally with said stationary part of said vehicle and projecting in a direction opposite to the rotating direction of said brake disc for mounting said caliper at a lateral side thereof, and wherein said abutment means includes an abutment formed in said mounting block.
3. A disc brake arrangement as claimed in Claim 2, wherein said coupling means includes a transverse rod removably mounted on said caliper at a lateral side thereof located remote from said caliper mounting block and extending across said first and second caliper arms, and wherein said first brake pad assembly includes a first backing plate which carries a first brake pad at a side facing said brake disc and is swingably mounted on said transverse rod at a lateral side portion located opposite to a lateral side edge adapted to releasably engage said abutment formed in said mounting block.
4. A disc brake arrangement as claimed in Claim 3, wherein said abutment edge is substantially straight and extends substantially radially of said brake disc to abut said side edge of said first backing plate in a geometrically complementary engagement.
5. A disc brake arrangement as claimed in Claim 4, wherein an offset portion is formed on said abutment edge substantially perpendicularly thereto at the outer-most portion of said abutment edge as viewed in a radial direction of said brake disc, and wherein said side edge of said first backing plate is formed with a lateral projection at a position to engage with said offset portion.
6. A disc brake arrangement as claimed in any of Claims 3 to 5, wherein said second brake pad assembly includes a second backing plate which carries a brake pad at a side thereof facing said brake disc and is mounted on said transverse rod swingably thereabout at a lateral side portion thereof, said retaining means including a recess formed in said other caliper arm and protrusions formed in said second backing plate at the side opposite to said second brake pad so as to releasably engage with said recess, thereby to hold said second brake pad assembly at a predetermined operating position in co-operation with said transverse rod.
7. A disc brake arrangement as claimed in Claim 6, wherein said recess is of a substantially semi-circular profile opened in the free end of said other caliper arm.
8. A disc brake arrangement as claimed in any of Claims 2 to 7, wherein said brake caliper is mounted on said mounting block to be movable reciprocably in a direction substantially perpendicular to the plane of said brake disc.
9. A disc brake arrangement as claimed in Claim 8, wherein a pair of spaced projections are formed on said brake caliper at a lateral side thereof to fixedly support a mounting rod which is slidably received in a through-hole formed in said mounting block, thereby to movably support said brake caliper, further including a guide rod extending parallel with said mounting rod providing as guide for said movement of said brake caliper.
10. A disc brake arrangement as claimed in Claim 9, wherein said guide rod is fixedly mounted on said first caliper arm at a free end portion thereof and extends slidably through a guide hole formed in said mounting block with a sleeve of resiliently yieldable material being interposed between said guide rod and said hole.
11. A disc brake arrangement as claimed in Claim 2, wherein said brake caliper is formed with a transvere throughhole and mounted on said mounting block by means of a rod extending through said transverse through-hole and fixedly secured to said mounting block so that said brake caliper can be provided about said rod relative to said brake disc.
12. A motor bicycle having a disc brake arrangement as claimed in any of Claims 1 to 11, said mounting means mounting the caliper on the fork member of the bicycle.
13. A disc brake arrangement substantially as described with reference to, and as illustrated in, Figures 1 to 7C, or Figures 8 to 13, of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977021058U JPS53115550U (en) | 1977-02-22 | 1977-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1593353A true GB1593353A (en) | 1981-07-15 |
Family
ID=12044295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7026/78A Expired GB1593353A (en) | 1977-02-22 | 1978-02-22 | Disc brake arrangement for motor vehicles |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS53115550U (en) |
| CS (1) | CS207587B2 (en) |
| DE (1) | DE2807620A1 (en) |
| GB (1) | GB1593353A (en) |
| IT (2) | IT7852939V0 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2116655A (en) * | 1982-03-18 | 1983-09-28 | Automotive Prod Co Ltd | Disc brakes |
| DE3232759A1 (en) * | 1982-09-03 | 1984-03-08 | Alfred Teves Gmbh, 6000 Frankfurt | PARTIAL PAD DISC BRAKE |
| GB2126294A (en) * | 1982-09-03 | 1984-03-21 | Teves Gmbh Alfred | Spot-type disc brake |
| US4716993A (en) * | 1981-08-29 | 1988-01-05 | Automotive Products Plc | Disc brake |
| DE4446752A1 (en) * | 1994-12-24 | 1996-06-27 | Fichtel & Sachs Ag | Disc brake for bicycles |
| DE29710836U1 (en) * | 1997-06-20 | 1997-12-04 | Schreier Anton | Disc brake for bicycles |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5827134Y2 (en) * | 1977-03-19 | 1983-06-13 | アイシン精機株式会社 | Disc brake for motorcycles |
| JPS6041257B2 (en) * | 1977-04-19 | 1985-09-14 | 日信工業株式会社 | Vehicle disc brake device |
| JPS6015003Y2 (en) * | 1978-09-20 | 1985-05-13 | トキコ株式会社 | Floating caliper type disc brake |
| JPS6052333B2 (en) * | 1978-09-28 | 1985-11-19 | アイシン精機株式会社 | disc brake |
| EP0023138A3 (en) * | 1979-07-20 | 1981-05-20 | Tokico Ltd. | Disc brake |
| JPS6336175Y2 (en) * | 1979-10-20 | 1988-09-26 | ||
| JPS5740128A (en) * | 1980-08-20 | 1982-03-05 | Tokico Ltd | Disc brake |
| JPS58140332U (en) * | 1982-03-17 | 1983-09-21 | トキコ株式会社 | disc brake |
| DE8304138U1 (en) * | 1983-02-15 | 1984-07-26 | Lucas Industries P.L.C., Birmingham, West Midlands | PARTIAL DISC BRAKE FOR VEHICLES. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2408519C2 (en) * | 1974-02-22 | 1982-07-22 | Alfred Teves Gmbh, 6000 Frankfurt | Sliding guide for the saddle of a floating-caliper partially lined disc brake, in particular for motor vehicles |
-
1977
- 1977-02-22 JP JP1977021058U patent/JPS53115550U/ja active Pending
-
1978
- 1978-02-20 CS CS781077A patent/CS207587B2/en unknown
- 1978-02-21 IT IT7852939U patent/IT7852939V0/en unknown
- 1978-02-21 IT IT7867354A patent/IT1109663B/en active
- 1978-02-22 GB GB7026/78A patent/GB1593353A/en not_active Expired
- 1978-02-22 DE DE19782807620 patent/DE2807620A1/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716993A (en) * | 1981-08-29 | 1988-01-05 | Automotive Products Plc | Disc brake |
| GB2116655A (en) * | 1982-03-18 | 1983-09-28 | Automotive Prod Co Ltd | Disc brakes |
| DE3232759A1 (en) * | 1982-09-03 | 1984-03-08 | Alfred Teves Gmbh, 6000 Frankfurt | PARTIAL PAD DISC BRAKE |
| GB2126293A (en) * | 1982-09-03 | 1984-03-21 | Teves Gmbh Alfred | Spot-type disc brake |
| GB2126294A (en) * | 1982-09-03 | 1984-03-21 | Teves Gmbh Alfred | Spot-type disc brake |
| DE4446752A1 (en) * | 1994-12-24 | 1996-06-27 | Fichtel & Sachs Ag | Disc brake for bicycles |
| DE29710836U1 (en) * | 1997-06-20 | 1997-12-04 | Schreier Anton | Disc brake for bicycles |
Also Published As
| Publication number | Publication date |
|---|---|
| CS207587B2 (en) | 1981-08-31 |
| JPS53115550U (en) | 1978-09-13 |
| IT7867354A0 (en) | 1978-02-21 |
| IT1109663B (en) | 1985-12-23 |
| IT7852939V0 (en) | 1978-02-21 |
| DE2807620A1 (en) | 1978-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1593353A (en) | Disc brake arrangement for motor vehicles | |
| US4044864A (en) | Disc brake | |
| US4537292A (en) | Friction pad assembly for a disc brake | |
| US4060154A (en) | Disc brakes caliper and support structure | |
| JPS6044529B2 (en) | disc brake | |
| US4471858A (en) | Disc brake | |
| JPH026927B2 (en) | ||
| US20070034457A1 (en) | Disk brake system for automobile | |
| SU1708163A3 (en) | Disc brake | |
| US3734243A (en) | Composite caliper for a disc brake | |
| US4191278A (en) | Slidable support structure for a disc brake caliper | |
| JPS6049777B2 (en) | Spot type disc brake device | |
| GB2088497A (en) | Disc brake actuating apparatus | |
| US3495689A (en) | Disc brake caliper mounting structure | |
| US3182754A (en) | Caliper type disc brake | |
| US3997034A (en) | Disc brake sliding caliper mounting | |
| US4265342A (en) | Disc brake assembly with torque absorbing bracket | |
| US3844384A (en) | Closed loop type disc brake | |
| US4046232A (en) | Disc brake sliding caliper assembly with brake pads of a common pattern, and method of construction | |
| GB2088499A (en) | Slidable mounting of disc brake caliper | |
| US4347917A (en) | Floating type disc brake | |
| US3773149A (en) | Automotive disc brake | |
| US4222464A (en) | Disc brake apparatus for a motor vehicle | |
| US3897858A (en) | Closed loop type disc brake | |
| US20220314691A1 (en) | Brake apparatus for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |