GB2054074A - Adjustable abutments in disc brakes - Google Patents
Adjustable abutments in disc brakes Download PDFInfo
- Publication number
- GB2054074A GB2054074A GB8017042A GB8017042A GB2054074A GB 2054074 A GB2054074 A GB 2054074A GB 8017042 A GB8017042 A GB 8017042A GB 8017042 A GB8017042 A GB 8017042A GB 2054074 A GB2054074 A GB 2054074A
- Authority
- GB
- United Kingdom
- Prior art keywords
- abutment
- torque taking
- pinch
- disc brake
- taking member
- 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.)
- Granted
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
- 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
- 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
- F16D55/22655—Constructional details of guide 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
- 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
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0008—Brake supports
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
In a spot-type disc brake wherein a friction-pad assembly (9) is mounted between torque-receiving abutments (3, 4), one of the abutments (4) is movable to a limited extent whereby, during assembly of the brake, it can be adjusted in position prior to being secured, to achieve optimum spacing of the abutment members and allay any tendency of the pad assembly to jam or rattle. The other abutment member (3) is not adjustable. Adjustment is made possible by providing a clearance between the shaft (16) of an abutment-fixing bolt (6) and a bore (17) in the abutment member (4). <IMAGE>
Description
SPECIFICATION
Adjustable abutments in disc brakes
The present invention relates to a spot-type disc brake, and in particular to a twin-pin sliding caliper disc brake.
Such twin-pin sliding caliper disc brakes basically comprise a torque taking member and a caliper which is slidable by means of a two pin connection, relative to the torque taking member.
The caliper member carries hydraulic and/or mechanical means which, when actuated, cause friction pad assemblies to engage and grip one each side of a disc.
When the brake is applied the drag force from both of the friction pad assemblies can either by taken solely by the torque taking member, or the outboard pad drag is taken through the caliper member to the pins and the inboard pad drag is taken directly on the torque taking member, or the total pad drag is taken by both pins via the caliper member. Taking the case where inboard pad drag is taken directly by the torque taking member, abutment faces are provided on the torque taking member in certain such disc brakes, to guide the inboard friction pad assembly during movement towards and away from the disc. If the friction pad assembly is mounted between the abutment members with clearance, it has been found that if the clearance is small seizure of the friction pad assembly within the abutments could occur.
Conversely, if the distance chosen between the abutments results in a large clearance between the abutment faces and the friction pad assembly, then rattle of the friction pad assembly within the abutments could result. Whilst rattle is clearly undesirable the effects of seizure can be actually dangerous. Seizure can cause dragging of the friction pad assembly on the disc and if dragging occurs in one brake alone, then unbalanced braking can occur and could result in instability of the vehicle.
An aim of the present invention is to enable the optimum dimension to be provided between friction pad abutment faces so that seizure and rattle are substantially obviated.
According to the present invention there is provided a spot-type disc brake comprising a caliper and a torque taking member, a pair of abutment members being mounted on the torque taking member to form guides for an inboard friction pad assembly, one abutment member being secured in a fixed position and the other abutment member being adjustable in position to a limited extent.
According to a further aspect of the present invention there is provided a twin-pin sliding caliper disc brake comprising a caliper and a torque taking member, a pair of abutment
members being mounted on the torque taking
member to form guides for an inboard friction pad assembly, one abutment member being secured in
a fixed position and the other abutment member
being adjustable in position to a limited extent.
The said one abutment member is keyed or mechanically interlocked with the torque taking member and is preferably the abutment member which takes the main drag during braking in the forward direction of the vehicle. The other abutment member being adjustable, the distance between the abutment members i.e. between the abutment members and the inboard friction pad assembly, can be accurately adjusted during installation or servicing of the brake to achieve the optimum position for the abutment members and substantially obviate seizure or rattle.
In one embodiment of the present invention two pinch bolts extend through the torque taking member and secure two pins to the torque taking member, the caliper being slidably mounted on these pins. The pinch bolts also secure two abutment members to the torque taking member.
One pinch bolt is a snug fit in a bore in one abutment member and the pin secured to this pinch bolt is mechanically interlocked with the torque taking member. Thus the said one abutment member is immovably fixed in position.
The other pinch bolt passes with clearance, through a bore in the other abutment member so that the secured position of this other abutment member can be adjusted to a limited extent to provide the optimum spacing between the abutment members.
In another embodiment of the present invention two pinch bolts extend through the torque taking member, one pinch bolt being screwed into a bore in the torque taking member and having an axial extension which forms a pin, and the other pinch bolt securing a pin to the torque taking plate as in the previous embodiment. The caliper is slidably mounted on the pins. The pinch bolts also secure two abutment members to the torque taking member. Said one pinch bolt is a snug fit in a bore through one abutment member so that this abutment member is immovably fixed in position.
The other pinch bolt, however, passes with clearance through a bore in the other abutment member so that the secured position of this other abutment member can be adjusted.
In a still further embodiment of the present invention two abutment members are provided, each having a threaded bore extending therethrough. Pins which in use slidably support a caliper, are formed by sleeves through which bolts extend with clearance. The bolts pass through apertures in the torque taking member and are screwed into the bores in the abutment members.
The sleeves are thus held between the bolt heads and the torque taking members. One abutment member has an extension which engages in a recess in the torque taking member so that this abutment member is keyed to the torque taking member. However, the other abutment member may be adjusted in position by virtue of the clearances between the bolt and the sleeve and between the bolt and the aperture in the torque taking member.
The present invention will now be further described by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a plan view of one embodiment of a brake according to the present invention;
Fig. 2 is an end view of the embodiment of Fig.
1, partially cutaway along line I-I in Fig. 1; Fig. 3 is a cross-sectional view of part of the brake shown in Fig. 1; Fig. 4 is a cross-sectional view similar two Fig. 3, of another embodiment of the present invention; and
Fig. 5 is a cross-sectional view similar to Fig. 3, of a still further embodiment of the present invention.
The embodiment of the present invention shown in Figs. 1 to 3 of the accompanying drawings basically comprises a caliper generally designated 1 and a torque plate 2. Abutment members 3 and 4 are secured to the torque plate 2 by pinch bolts 5 and 6 respectively, and present parallel faces 7 and 8 respectively, which act as guides for inboard friction pad assembly 9 during its operative movement. The shaft 10 of pinch bolt 5 is a snug fit in bore 11 extending through abutment member 3, and passes with clearance through aperture 12 in torque plate 2 to be screwed into axial blind bore 13 in pin 14. Pin 14 engages in recess 1 5 in the torque plate to thus secure both the pinch bolt 5 and pin 14 in a fixed position, the snug fit of shaft 10 in the abutment member ensuring a fixed, unadjustable position for abutment member 3.The shaft 1 6 of pinch bolt 6 passes with clearance through both bore 1 7 in abutment member 4, and aperture 18 in torque plate 2, and is screwed into axial blind bore 19 in pin 20. Pins 14 and 20 slidably support caliper 1 in the complete brake. Purely the clamping action of pinch bolt 6 secures the position of abutment member 4 and pin 20. By slackening pinch bolt 6 the clearance between abutment member 4 and shaft 16, and between shaft 16 and aperture 18, can be utilised to adjust the position of the abutment member 4 relative to fixed abutment member 3.
In the embodiments shown in part in Figs. 4 and 5, parts common to Fig. 3 are identified by the same reference numerals.
In Fig. 4 a pinch bolt 21 has an axial extension which forms a pin 22 upon which the caliper 1 is mounted. The shaft of pinch bolt 21 has a threaded portion 23 which is screwed into a complementary threaded bore 24 in torque plate 2, the pinch bolt being thus fixedly secured in position relative to torque plate 2. Due to the snug fit of the pinch bolt 21 in bore 25 in abutment member 3, the abutment member 3 is therefore unadjustably fixed in position. However pinch bolt 26 passes with clearance through the bore 27 in abutment member 4so that the position of abutment member 4 can be adjusted, upon slackening pinch bolt 26. Thus the distance between opposing faces 7 and 8 of the abutment members can be adjusted to substantially obviate the problems of seizure and rattle.
In the embodiment of Fig. 5, pins 28 and 29 upon which caliper 1 is slidably mounted, are formed by sleeves 30 and 31 respectively, which are secured to torque plate 2 by bolts 32 and 33 respectively. The bolts 32 and 33 extend through apertures in torque plate 2 and are screwed into threaded bores 34 and 35 in the abutment members 3 and 4. Thus by the clamping action of bolts 32 and 33 the pins 28 and 29, and abutment members 3 and 4 are held in place. Abutment member 3 has an extension 36 which engages in a complementary recess in torque plate 2 so that abutmeiit member 3 is accurately and fixedly secured in position. However, bolt 33 extends with clearance through sleeve 31 and with clearance through the aperture in the torque plate 2. Thus, as abutment member 4 has a planar surface in contact with the planar surface of the torque plate 2, abutment member 4 can be adjusted in position once bolt 33 has been slackened, utilising the abovementioned clearances.
In all of the above described embodiments of the present invention, which are merely examples of the large number of embodiments possible within the scope of the present invention, one abutment member is fixed and the other abutment member is adjustable. Thus, during servicing or installation the adjustment of the one abutment member can provide the optimum spacing of the abutment members to substantially obviate the problems of rattle or seizure.
Claims (12)
1. A spot-type disc brake comprising a caliper and a torque taking member, a pair of abutment members being mounted on the torque taking member to form guides for an inboard friction pad assembly, one abutment member being secured in a fixed position and the other abutment member being adjustable in position to a limited extent.
2. A disc brake as claimed in claim 1, in which the abutment members are secured to the torque taking member by two pinch bolts, one pinch bolt being a snug fit in a bore in said one abutment member and the other pinch bolt passing with clearance through a bore in the other abutment member.
3. A disc brake as claimed in claim 2, in which the two pinch bolts extend through the torque taking member and secure two pins to the torque taking member, the caliper being slidably mounted on these pins, the pin secured to said one pinch bolt, being mechanically interlocked with the torque taking member.
4. A disc brake as claimed in claim 3, in which the pin secured to said one pinch bolt is mechanically interlocked with the torque taking member by one end of said pin engaging in a complementary recess in the torque taking member and being clamped therein by means of said one pinch bolt.
5. A disc brake as claimed in claim 2, in which the two pinch bolts extend through the torque taking member, said one pinch bolt having an axial extension which forms a pin upon which the caliper can slide, and a threaded region which engages in a complementarily threaded through bore in the torque taking member, another pin for slidably supporting the caliper being secured to the torque taking member by the said other pinch bolt.
6. A disc brake as claimed in claim 1, in which the abutment members are secured to the torque taking member by two pinch bolts, both pinch bolts being a snug fit in bores in the respective abutment members, one pinch bolt passing with clearance through a bore in the torque taking member and the other being a snug fit in a further bore in said torque taking member, said pinch bolts securing pins for slidably supporting the caliper, to said torque taking member.
7. A disc brake as claimed in claim 1, in which each abutment member has a threaded bore extending therethrough, pins which slidably support the caliper being formed by sleeves through which bolts extend with clearance, the bolts passing through apertures in the torque taking member and being screwed into the bores in the abutment members, one abutment member being secured in a fixed position and the other abutment member being adjustable due to the bolt secured thereto passing with clearance through a bore in the torque taking member.
8. A disc brake as claimed in claim 7, in which said one abutment member is keyed to the torque taking member, an extension of said one abutment member engaging in a complementary recess in the torque taking member.
9. A disc brake as claimed in claim 7 or 8, in which the bolt engaging said one abutment member is a snug fit in the bore through which it passes in the torque taking member.
10. A disc brake as claimed in claim 7, 8 or 9, in which the sleeve through which the bolt secured to said one abutment member, passes, engages in a complementary shaped recess in the torque taking member.
11. A disc brake as claimed in any one of the preceding claims, in which the fixed position abutment member is the abutment member which takes the drag forces when braking in a forward direction of travel.
12. A spot-type disc brake constructed and arranged substantially as hereinbefore described with reference to and as illustrated in Figs.1,2 and 3, or Fig. 4, or Fig. 5 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8017042A GB2054074B (en) | 1979-06-16 | 1980-05-23 | Adjustable abutments in disc brakes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7920929 | 1979-06-16 | ||
| GB8017042A GB2054074B (en) | 1979-06-16 | 1980-05-23 | Adjustable abutments in disc brakes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2054074A true GB2054074A (en) | 1981-02-11 |
| GB2054074B GB2054074B (en) | 1982-12-15 |
Family
ID=26271858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8017042A Expired GB2054074B (en) | 1979-06-16 | 1980-05-23 | Adjustable abutments in disc brakes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2054074B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2511100A1 (en) * | 1981-08-04 | 1983-02-11 | Lucas Ind Plc | IMPROVEMENTS IN DISC BRAKES |
| FR2865783A1 (en) * | 2004-02-03 | 2005-08-05 | Sime Stromag Sas | Disc brake for controlling swinging movements of wind turbine nacelle, has stops fixed by using screw on corresponding transversal sides of caliper branch, and having two support faces tangential to transversal support faces of brake plates |
-
1980
- 1980-05-23 GB GB8017042A patent/GB2054074B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2511100A1 (en) * | 1981-08-04 | 1983-02-11 | Lucas Ind Plc | IMPROVEMENTS IN DISC BRAKES |
| FR2865783A1 (en) * | 2004-02-03 | 2005-08-05 | Sime Stromag Sas | Disc brake for controlling swinging movements of wind turbine nacelle, has stops fixed by using screw on corresponding transversal sides of caliper branch, and having two support faces tangential to transversal support faces of brake plates |
| WO2005083290A1 (en) * | 2004-02-03 | 2005-09-09 | Sime-Stromag | Disc brake provided with adjustable linings |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2054074B (en) | 1982-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960523 |