CA1135202A - Caliper brake - Google Patents
Caliper brakeInfo
- Publication number
- CA1135202A CA1135202A CA000348386A CA348386A CA1135202A CA 1135202 A CA1135202 A CA 1135202A CA 000348386 A CA000348386 A CA 000348386A CA 348386 A CA348386 A CA 348386A CA 1135202 A CA1135202 A CA 1135202A
- Authority
- CA
- Canada
- Prior art keywords
- arms
- brake
- shoes
- base
- pole
- 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
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
- F16D55/2245—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 in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
TITLE: CALIPER BRAKE
ABSTRACT OF THE DISCLOSURE
A caliper brake including a base having a single pole extending therefrom with a pair of identically formed opposed arms pivotally mounted on the pole. On one end of each of the arms is pivotally mounted a brake shoe, and the other ends of the arms have an air bladder interposed therebetween for moving the brake shoes together. Each of the arms carries an adjustable pin engageable with a central stop pin mounted on the base and extending centrally between the arms for orienting the arms relative to a disc positioned between the shoes for braking of the disc. An air bladder is mounted between the other ends of the arms for pivoting the arms and moving the brake shoes together, the bladder having an intrinsic spring return properties which separate the brake shoes when the air bladder is deactivated.
ABSTRACT OF THE DISCLOSURE
A caliper brake including a base having a single pole extending therefrom with a pair of identically formed opposed arms pivotally mounted on the pole. On one end of each of the arms is pivotally mounted a brake shoe, and the other ends of the arms have an air bladder interposed therebetween for moving the brake shoes together. Each of the arms carries an adjustable pin engageable with a central stop pin mounted on the base and extending centrally between the arms for orienting the arms relative to a disc positioned between the shoes for braking of the disc. An air bladder is mounted between the other ends of the arms for pivoting the arms and moving the brake shoes together, the bladder having an intrinsic spring return properties which separate the brake shoes when the air bladder is deactivated.
Description
- ~ ( 5~2 SUM~RY
The invention relates to an improvement in what ; is commonly known in the trade as a caliper brake.
Known caliper brakes includes linkages of one sort or another which have disadvantages of construction effectiveness and maintenance.
It is an object of the invention to provide a caliper brake having a single pole on which a pair of brake arms are pivotally mounted. On one end of each lo arm is pivotally mounted a brake shoe in opposed relation and between the other ends of the arms is mounted an air bladder which when expanded moves the i shoes together for braking a disc associated with a .
machine for braking, the disc interposed between the shoes. The air bladder being of resilient material has intrisic return properties which returns the brake shoes to a separated condition.
It is a further object of the invention to provide a caliper brake which has a mini~um of parts and which has a deep throat construction that allows the brake ~, shoes to be placed e.g. inwardly of a row of teeth of a circle saw or sprocket. The construction alloWs easy replacement and interchange of brake shoes.
~ .
: .
~ ~135Z~2 It is a further object of the invention to provide a caliper brake in which the pivoted brake arms are identical which reduces the cost of manufacture and inventor classification. It is also an object of the invention to provide a caliper brake having a pin on each arm for simply and effectively orienting the brake shoes relative to the disc member to be braked.
It is a still further object of the invention to provide brake shoes each having arcuate inner and outer edges with -the ends thereof on a radius which gives even pressure over the entire area of the shoe and allowing a greater area of brake surface for a caliper brake which gives lower shoe temperature and wear. The arc length of the shoe with each end formed on a radius provides additional shoe area radially outwardly which keeps up ~ith the greater speed of travel at greater diameters of a disc to be braked.
,~'~ ' '
The invention relates to an improvement in what ; is commonly known in the trade as a caliper brake.
Known caliper brakes includes linkages of one sort or another which have disadvantages of construction effectiveness and maintenance.
It is an object of the invention to provide a caliper brake having a single pole on which a pair of brake arms are pivotally mounted. On one end of each lo arm is pivotally mounted a brake shoe in opposed relation and between the other ends of the arms is mounted an air bladder which when expanded moves the i shoes together for braking a disc associated with a .
machine for braking, the disc interposed between the shoes. The air bladder being of resilient material has intrisic return properties which returns the brake shoes to a separated condition.
It is a further object of the invention to provide a caliper brake which has a mini~um of parts and which has a deep throat construction that allows the brake ~, shoes to be placed e.g. inwardly of a row of teeth of a circle saw or sprocket. The construction alloWs easy replacement and interchange of brake shoes.
~ .
: .
~ ~135Z~2 It is a further object of the invention to provide a caliper brake in which the pivoted brake arms are identical which reduces the cost of manufacture and inventor classification. It is also an object of the invention to provide a caliper brake having a pin on each arm for simply and effectively orienting the brake shoes relative to the disc member to be braked.
It is a still further object of the invention to provide brake shoes each having arcuate inner and outer edges with -the ends thereof on a radius which gives even pressure over the entire area of the shoe and allowing a greater area of brake surface for a caliper brake which gives lower shoe temperature and wear. The arc length of the shoe with each end formed on a radius provides additional shoe area radially outwardly which keeps up ~ith the greater speed of travel at greater diameters of a disc to be braked.
,~'~ ' '
- 2 -' liL;~52~X
The invention will appear more clearly fxom the following detailed description when taken in connection with the accompanying drawings, showing by way of example a preferred embodiment of the inventive idea ; wherein like numerals refer to like parts throughout.
In the drawings forming part of this application:
Figure 1 is a perspective view of a caliper brake embodying the invention with a disc to be braked shown in phantom-outline.
Figure 2 is a perspective view of the arms of the brake shown as removed therefrom.
; Figure 3 is a sectional view on the line 3-3 of Figure 1.
Figure 4 is a sectional view on the line 4-4 of Figure 1.
Figure 5 is a sectional view on the line 5-5 of Figure 3. ~ , Figure 6 is a view on the line 6-6 of Figuro 3.
' ' . ' .
.
: i , . .
The invention will appear more clearly fxom the following detailed description when taken in connection with the accompanying drawings, showing by way of example a preferred embodiment of the inventive idea ; wherein like numerals refer to like parts throughout.
In the drawings forming part of this application:
Figure 1 is a perspective view of a caliper brake embodying the invention with a disc to be braked shown in phantom-outline.
Figure 2 is a perspective view of the arms of the brake shown as removed therefrom.
; Figure 3 is a sectional view on the line 3-3 of Figure 1.
Figure 4 is a sectional view on the line 4-4 of Figure 1.
Figure 5 is a sectional view on the line 5-5 of Figure 3. ~ , Figure 6 is a view on the line 6-6 of Figuro 3.
' ' . ' .
.
: i , . .
- 3 -~1 .
.
~ ~ \
~L3S~az Referring to the drawings in detail, the caliper brake A includes the base 10 having a boss 11 which has the hole 12 formed therein and in which the lower portion of the single pole 14 is press fit into the ~- hole 12. Further provided is a first pivoting brake arm 16 which includes the flat portion 18 Oll the inner end of which is formed the end boss 20 having the hole 22 formed therethrough. The fla~ portion 18 has a side boss 24 formed thereon and through which lo is formed the hole 26 the axis of which is parallel to the axis of the hole 22. The outer end of the arm 18 is formed with the holes 25 and 27.
The numeral 28 designates a second pivoting brake arm that is identical to the first arm identical .~ parts of which bear identical reference numerals ac-companied by a lower-case let~er a. The first arm 16 is pivotally mounted on -the pole 14 with the pole extended through the friction bearing 29 mounted in the hole 26 and the arm bottoming out on the lower spacer-ring 30 positioned on top of the base boss il.
Mounted on the pole 14 on top of the boss 24 is the upper spacer ring 32, and rnoun-t~d upon the pole 14 and upon the ring 32 is the boss 24a of the second pivoting arm 28. With the arms pivotally mounted in :,
.
~ ~ \
~L3S~az Referring to the drawings in detail, the caliper brake A includes the base 10 having a boss 11 which has the hole 12 formed therein and in which the lower portion of the single pole 14 is press fit into the ~- hole 12. Further provided is a first pivoting brake arm 16 which includes the flat portion 18 Oll the inner end of which is formed the end boss 20 having the hole 22 formed therethrough. The fla~ portion 18 has a side boss 24 formed thereon and through which lo is formed the hole 26 the axis of which is parallel to the axis of the hole 22. The outer end of the arm 18 is formed with the holes 25 and 27.
The numeral 28 designates a second pivoting brake arm that is identical to the first arm identical .~ parts of which bear identical reference numerals ac-companied by a lower-case let~er a. The first arm 16 is pivotally mounted on -the pole 14 with the pole extended through the friction bearing 29 mounted in the hole 26 and the arm bottoming out on the lower spacer-ring 30 positioned on top of the base boss il.
Mounted on the pole 14 on top of the boss 24 is the upper spacer ring 32, and rnoun-t~d upon the pole 14 and upon the ring 32 is the boss 24a of the second pivoting arm 28. With the arms pivotally mounted in :,
- 4 -. ~ .
~1~352~
such a juxtaposed positions the same may be pivoted ;, to and from the other as will be further described hereinafter.
The numeral 34 designates a first brake shoe including the plate portion 36 from which extends a pair of spaced flanges 38 and 40 each having a hole 41 formed therethrough which receive the pin 42. Secured to the plate portion 36 is the friction facing 44. The flange 38 is strengthened by the spaced webs 46 and 48 formed integral with the flange 38 and plate portion 36. The flange 40 is strength-ened by a pair of spaced flanges 50. The shoe 34 is pivotally ~ounted on the boss 20 of the arm 16 by positioning the pin 42 through the holes 41 of flanges ~ ~ :
38 and 40 and through the bearings 54 and 56 in the hole 22 of the boss 20.
Further pro~ided is a second brake shoe 58 which is identical to shoe 34 but mounted as a left with respect to shoe 34 as a right, the identical portions bearing identical reference numerals but accompanied by a lower case letter a. Each of the pins 42 and 42a has a ring 59 con.nected to the top end thereof for easy insertion and removal of the pin for maintenance of the brake shoes. The arm 28 is pivotally secured upon the arm 16 by means of the lock ring 60.
, .
~1~352~
such a juxtaposed positions the same may be pivoted ;, to and from the other as will be further described hereinafter.
The numeral 34 designates a first brake shoe including the plate portion 36 from which extends a pair of spaced flanges 38 and 40 each having a hole 41 formed therethrough which receive the pin 42. Secured to the plate portion 36 is the friction facing 44. The flange 38 is strengthened by the spaced webs 46 and 48 formed integral with the flange 38 and plate portion 36. The flange 40 is strength-ened by a pair of spaced flanges 50. The shoe 34 is pivotally ~ounted on the boss 20 of the arm 16 by positioning the pin 42 through the holes 41 of flanges ~ ~ :
38 and 40 and through the bearings 54 and 56 in the hole 22 of the boss 20.
Further pro~ided is a second brake shoe 58 which is identical to shoe 34 but mounted as a left with respect to shoe 34 as a right, the identical portions bearing identical reference numerals but accompanied by a lower case letter a. Each of the pins 42 and 42a has a ring 59 con.nected to the top end thereof for easy insertion and removal of the pin for maintenance of the brake shoes. The arm 28 is pivotally secured upon the arm 16 by means of the lock ring 60.
, .
- 5 -. .
(~ ( ~1 3~iZ~2 Each of the shoe plate portions 36 and 36a, is arcuately formed to a radius on both inner and outer edges 62 and 64, respectively, wi-th the ends 61 and 63 on a radius. It has been found that with the increase of arc length and area of a shoe travel there is an increase of wear due to the greater velocity at the outer extremity and that with the increase of arc in the friction linings, which coincide with the shoes, the wear throughout the lining faces is lo substantially even with the instant invention.
The numeral 66 designates a conventional air bladder mounted between the ends of the arms 16 and 28 on each side by means o~ a pair of bolts 68 and 70. The bladder is conn~cted to an air supviy line 72 which is used to expand the bladder which brings the shoes closer together while the intrinsic resi-lience of the bladder returns the arms together and the shoes apart.
Further provided is the central stop pin 74 anchored in and extending upwardly from the base 10 and centrally between the arms 16 and 28 and against which the guide pins 76 and 78 are adjustably positioned.
The pin 76 is threadedly mounted in the arm 16 with the lock nut 80 whereby the pin 76 may be caused to ~135%~
extend more or less inwardly of the arm 16. The pin 78 is similarly and threadedly mounted in the arm : -' 28 with the lock nut 82 whereby the pin 78 may be caused to extend more or less inwardly of the arm 28. With the pins 76 and 78 used in conjunction :~ with the stop pin 74 the shoes may be oriented easily ~ ~
and precisely for equal braking with regard to a ~ - :
disc to braked such as D.
' ., "
(~ ( ~1 3~iZ~2 Each of the shoe plate portions 36 and 36a, is arcuately formed to a radius on both inner and outer edges 62 and 64, respectively, wi-th the ends 61 and 63 on a radius. It has been found that with the increase of arc length and area of a shoe travel there is an increase of wear due to the greater velocity at the outer extremity and that with the increase of arc in the friction linings, which coincide with the shoes, the wear throughout the lining faces is lo substantially even with the instant invention.
The numeral 66 designates a conventional air bladder mounted between the ends of the arms 16 and 28 on each side by means o~ a pair of bolts 68 and 70. The bladder is conn~cted to an air supviy line 72 which is used to expand the bladder which brings the shoes closer together while the intrinsic resi-lience of the bladder returns the arms together and the shoes apart.
Further provided is the central stop pin 74 anchored in and extending upwardly from the base 10 and centrally between the arms 16 and 28 and against which the guide pins 76 and 78 are adjustably positioned.
The pin 76 is threadedly mounted in the arm 16 with the lock nut 80 whereby the pin 76 may be caused to ~135%~
extend more or less inwardly of the arm 16. The pin 78 is similarly and threadedly mounted in the arm : -' 28 with the lock nut 82 whereby the pin 78 may be caused to extend more or less inwardly of the arm 28. With the pins 76 and 78 used in conjunction :~ with the stop pin 74 the shoes may be oriented easily ~ ~
and precisely for equal braking with regard to a ~ - :
disc to braked such as D.
' ., "
Claims (2)
1. A Caliper Brake comprising:
(a) a base, (b) a single pole mounted on said base and normal thereto, (c) first and second identical brake arms, (d) each of said arms having a boss extending therefrom intermediate the ends thereof and (e) a hole extending therethrough, said pole extended through the holes of said bosses thereby mounting said arms in pivotal juxtaposition, (f) first and second brake shoes each having a friction facing thereon, (g) each of said arms having a boss on one end thereof, and a hole extending therethrough, (h) each of said brake shoes having a pair of spaced flanges and (i) each flange having a hole extending therethrough, (j) a pin extending through each of the holes of said flanges and bosses of each of said brake shoes and said arms thereby pivotally mounting said brake shoes, (k) said base having a stop pin extending upwardly there-from and parallely disposed to said single pole and inter-mediate the other ends of said brake arms, (l) a guide pin mounted on each of said arms extending normal thereto and contactable with said stop pin, (m) means for adjustably positioning each of said guide pins relative to a brake arm for adjusting the pivotal position of said brake arms each to the other, (n) means interposed between the other ends of said brake arms for pivoting said arms upon said pole and the friction facings thereof together to grip a disc positioned between said friction facings of said shoes and away from each other for release of the disc,
(a) a base, (b) a single pole mounted on said base and normal thereto, (c) first and second identical brake arms, (d) each of said arms having a boss extending therefrom intermediate the ends thereof and (e) a hole extending therethrough, said pole extended through the holes of said bosses thereby mounting said arms in pivotal juxtaposition, (f) first and second brake shoes each having a friction facing thereon, (g) each of said arms having a boss on one end thereof, and a hole extending therethrough, (h) each of said brake shoes having a pair of spaced flanges and (i) each flange having a hole extending therethrough, (j) a pin extending through each of the holes of said flanges and bosses of each of said brake shoes and said arms thereby pivotally mounting said brake shoes, (k) said base having a stop pin extending upwardly there-from and parallely disposed to said single pole and inter-mediate the other ends of said brake arms, (l) a guide pin mounted on each of said arms extending normal thereto and contactable with said stop pin, (m) means for adjustably positioning each of said guide pins relative to a brake arm for adjusting the pivotal position of said brake arms each to the other, (n) means interposed between the other ends of said brake arms for pivoting said arms upon said pole and the friction facings thereof together to grip a disc positioned between said friction facings of said shoes and away from each other for release of the disc,
2. The device of claim 1 in which said means interposed between the other ends of said brake arms for pivoting said arms includes air operated bellows.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5341379A | 1979-06-29 | 1979-06-29 | |
| US053,413 | 1979-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1135202A true CA1135202A (en) | 1982-11-09 |
Family
ID=21984050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000348386A Expired CA1135202A (en) | 1979-06-29 | 1980-03-25 | Caliper brake |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS566932A (en) |
| AU (1) | AU520322B2 (en) |
| CA (1) | CA1135202A (en) |
| CH (1) | CH642309A5 (en) |
| DE (1) | DE3011006C2 (en) |
| FR (1) | FR2460421A1 (en) |
| GB (1) | GB2054072B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5818137U (en) * | 1981-07-29 | 1983-02-04 | 株式会社クボタ | Traveling brake for mobile agricultural machinery |
| JPS5920882U (en) * | 1982-07-26 | 1984-02-08 | 凸版印刷株式会社 | Collation/sorting device |
| GB2135000A (en) * | 1983-02-10 | 1984-08-22 | Lucas Ind Plc | Disc brakes for rail vehicles |
| DE3615589A1 (en) * | 1986-05-09 | 1987-11-12 | Voith Turbo Kg | ACTUATING DEVICE FOR A DISC BRAKE |
| US5058712A (en) * | 1989-07-07 | 1991-10-22 | American Standard Inc. | Pre-loading pivotal pin connection for a disc brake assembly |
| DE69132360T2 (en) * | 1990-12-10 | 2001-03-01 | Pbr Automotive Pty Ltd | BRAKE SHOE HOLDER FOR DISC BRAKE UNIT |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1151513A (en) * | 1956-04-06 | 1958-01-31 | Automobiles Ettore Bugatti | Disc brake, in particular for motor vehicle wheel |
| US3465849A (en) * | 1968-03-15 | 1969-09-09 | Moe M Bernfeld | Alligator clamp disc brake |
| DE2426951A1 (en) * | 1974-06-04 | 1976-01-02 | Bergische Stahlindustrie | Disc brake system for railway vehicles - has single stiffening member connected to bogie or frame |
| GB1494730A (en) * | 1974-11-25 | 1977-12-14 | Twiflex Couplings | Industrial disc brakes |
| DE2528480C2 (en) * | 1975-06-26 | 1986-09-11 | Knorr-Bremse AG, 8000 München | Securing device for a length-adjustable drawbar of brake calipers for disc brakes |
| US4094388A (en) * | 1976-07-09 | 1978-06-13 | Wagner Electric Corporation | Automatic brake adjusting means |
| FR2365726A1 (en) * | 1976-09-27 | 1978-04-21 | Pont A Mousson | Disc brake system for rail vehicles - incorporates brake pad release mechanism for ease of maintenance using spring-loaded pin |
| DE2657015A1 (en) * | 1976-12-16 | 1978-09-07 | Volkswagenwerk Ag | Parking brake for vehicle disc brake - has callipers on opposite side of disc to normal brakes |
-
1980
- 1980-03-21 DE DE19803011006 patent/DE3011006C2/en not_active Expired
- 1980-03-25 CA CA000348386A patent/CA1135202A/en not_active Expired
- 1980-03-26 CH CH236480A patent/CH642309A5/en not_active IP Right Cessation
- 1980-03-31 GB GB8010764A patent/GB2054072B/en not_active Expired
- 1980-04-03 AU AU57141/80A patent/AU520322B2/en not_active Expired
- 1980-04-24 JP JP5486180A patent/JPS566932A/en active Pending
- 1980-05-22 FR FR8011403A patent/FR2460421A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2460421A1 (en) | 1981-01-23 |
| GB2054072A (en) | 1981-02-11 |
| JPS566932A (en) | 1981-01-24 |
| DE3011006A1 (en) | 1981-01-08 |
| AU5714180A (en) | 1981-03-19 |
| GB2054072B (en) | 1983-01-26 |
| DE3011006C2 (en) | 1984-12-13 |
| AU520322B2 (en) | 1982-01-28 |
| CH642309A5 (en) | 1984-04-13 |
| FR2460421B1 (en) | 1984-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |