US20130048444A1 - Bicycle disc brake caliper - Google Patents
Bicycle disc brake caliper Download PDFInfo
- Publication number
- US20130048444A1 US20130048444A1 US13/217,331 US201113217331A US2013048444A1 US 20130048444 A1 US20130048444 A1 US 20130048444A1 US 201113217331 A US201113217331 A US 201113217331A US 2013048444 A1 US2013048444 A1 US 2013048444A1
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- US
- United States
- Prior art keywords
- disc brake
- caliper
- parts
- side caliper
- bicycle disc
- 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.)
- Abandoned
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Classifications
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- 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
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0068—Brake calipers
- F16D65/0075—Brake calipers assembled from a plurality of parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
- B60T11/046—Using cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
- B60T7/102—Disposition of hand control by means of a tilting lever
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
- B62L3/023—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever acting on fluid pressure systems
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- 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
- F16D55/228—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 separate actuating member for each side
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- 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
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
Definitions
- This invention generally relates to a bicycle disc brake caliper. More specifically, the present invention relates to a bicycle disc brake caliper that has two with caliper parts or housings that are fixed together.
- Disc brake systems provide a substantial braking power in relationship to the amount of braking force applied to the brake lever. Also, disc brake systems typically provide a high level of consistency in all types of weather and riding conditions.
- Disc brake systems typically include a caliper housing, a first movable brake pad and a second fixed or movable brake pad.
- Disc brakes can be hydraulically actuated or mechanically actuated for moving the movable brake pad(s).
- the brake pads are positioned on either side of a rotor, which is attached to the front or back wheel of a bicycle. The brake pads are pressed against a brake disc or rotor that is fixed to the wheel to slow down or stop the rotation of the disc, and thus, slow down or stop the rotation of the wheel.
- each movable brake pad is typically attached to a piston that is movable in response to operation of a camming mechanism. Upon the operation of the camming mechanism to move the piston or pistons, the brake pads come into contact with the rotor for applying frictional resistance and causing the bicycle to slow down or stop.
- a mechanically actuated disc brake device is disclosed in U.S. Pat. No. 6,557,671 (assigned to Shimano Inc.).
- the movable brake pad is typically attached to a piston that is movable in response to fluid pressure applied via a hydraulic fluid conduit in the caliper housing.
- the brake pads come into contact with the rotor for applying frictional resistance and causing the bicycle to slow down or stop.
- Examples of a hydraulically actuated disc brake devices are disclosed in U.S. Patent Application Publication No. 2011/0000748A1 (assigned to Shimano Inc.) and U.S. Patent Application Publication No. 2011/0000749A1 (assigned to Shimano Inc.).
- one aspect present in this disclosure is to provide a bicycle disc brake caliper that is lightweight.
- a bicycle disc brake caliper is basically provided that comprises a first side caliper part and a second side caliper part.
- the first side caliper part includes a first bonding surface.
- the second side caliper part includes a second bonding surface.
- the first and second bonding surfaces of the first and second side caliper parts are fixedly bonded together by a bonding material with a brake disc slot being defined between the first and second side caliper parts.
- FIG. 1 is a partial side elevational view of a front disc brake system including a front disc brake device (e.g., a bicycle disc brake caliper) coupled to a front fork and a front disc brake controller coupled to a handlebar) that operates the front disc brake device in accordance with a first embodiment;
- a front disc brake device e.g., a bicycle disc brake caliper
- a front disc brake controller coupled to a handlebar
- FIG. 2 is an exploded perspective view of the disc brake device illustrated in FIG. 1 ;
- FIG. 3 is an enlarged perspective view of the disc brake device illustrated in FIGS. 1 and 2 ;
- FIG. 4 is a rear end view of the disc brake device illustrated in FIGS. 1 to 3 ;
- FIG. 5 is a cross sectional view of the disc brake device illustrated in FIGS. 1 to 4 as seen along section line 5 - 5 of FIG. 3 ;
- FIG. 6 is an elevational view of the inside surface of the first side caliper part of the disc brake device illustrated in FIGS. 1 to 5 ;
- FIG. 7 is an elevational view of the inside surface of the second side caliper part of the disc brake device illustrated in FIGS. 1 to 5 ;
- FIG. 8 is an exploded perspective view of a disc brake device in accordance with a second embodiment
- FIG. 9 is a cross sectional view of the disc brake device illustrated in FIG. 8 as seen along section line that is similar to FIG. 5 ;
- FIG. 10 is a perspective view of a front disc brake device (e.g., a bicycle disc brake caliper) in accordance with a third embodiment
- FIG. 11 is a rear end view of the front disc brake device illustrated in FIG. 10 ;
- FIG. 12 is an elevational view of the inside surface of the first side caliper part of the front disc brake device illustrated in FIGS. 10 and 11 ;
- FIG. 13 is an elevational view of the inside surface of the second side caliper part of the front disc brake device illustrated in FIGS. 10 to 12 ;
- FIG. 14 is a perspective view of a front disc brake device (e.g., a bicycle disc brake caliper) in accordance with a fourth embodiment
- FIG. 15 is a rear end view of the front disc brake device illustrated in FIG. 14 ;
- FIG. 16 is an elevational view of the inside surface of the first side caliper part of the front disc brake device illustrated in FIGS. 14 and 15 ;
- FIG. 17 is a perspective view of the second side caliper part of the disc brake device illustrated in FIGS. 14 to 16 ;
- FIG. 18 is an elevational view of the inside surface of the second side caliper part of the disc brake device illustrated in FIGS. 14 to 17 ;
- FIG. 19 is an elevational view of an inside surface of a first side caliper part for a disc brake device in accordance with a fifth embodiment
- FIG. 20 is an elevational view of an inside surface of a second side caliper part that is used with the first side caliper part illustrated in FIG. 19 in accordance with the fifth embodiment;
- FIG. 21 is an elevational view an inside surface of a first side caliper part for a disc brake device in accordance with a sixth embodiment.
- FIG. 22 is an elevational view of an inside surface of a second side caliper part that is used with the first side caliper part illustrated in FIG. 21 in accordance with the sixth embodiment.
- a front disc brake system 10 that includes a bicycle disc brake caliper 12 and a brake operating (actuating) mechanism 16 in accordance with a first embodiment.
- the disc brake caliper 12 is mounted to a front fork 18 of a bicycle (not shown) by a bracket 20 using a pair of bolts B.
- the disc brake caliper 12 is constructed for selectively gripping (stopping rotation) of a disc brake rotor 22 that is fixedly attached to a hub (not shown) of a bicycle wheel (not shown).
- the brake operating mechanism 16 is designed to actuate the disc brake caliper 12 in a conventional manner to apply a forcible gripping action on the disc brake rotor 22 to stop rotation of the bicycle wheel.
- the brake operating mechanism 16 basically has a master cylinder 24 , a clamp 26 and a brake lever 28 .
- the brake lever 28 is pivotally coupled to the master cylinder 24 for operating the disc brake caliper 12 .
- the brake operating mechanism 16 is supported on a handlebar 30 via the clamp 26 in a conventional manner.
- the master cylinder 24 also has a hydraulic fluid reservoir 36 that is in fluid communication with the master cylinder bore 32 .
- the hydraulic fluid reservoir 36 contains hydraulic fluid (mineral oil) which is pressurized by movement of the piston 34 in the master cylinder 24 in response to the pivotal movement of the brake lever 28 towards the handlebar 30 .
- the master cylinder 24 has an outlet port 38 for supplying hydraulic fluid to the disc brake caliper 12 via a hydraulic brake hose 40 . Since the operation of the brake operating mechanism 16 is conventional, the parts (e.g., the master cylinder 24 , the and the piston 34 ) of the brake operating mechanism 16 will not be discussed or shown in further detail herein.
- the disc brake caliper 12 includes a first (left) side caliper part 41 , a second (right) side caliper part 42 , a pair of brake pads or friction members 44 , a biasing member 46 and an actuation unit 48 ( FIG. 4 ).
- the first and second side caliper parts 41 and 42 are fixedly connected together solely by bonding to form a caliper housing with a brake disc slot 50 being defined between the first and second side caliper parts 41 and 42 .
- a pad axle or pin 52 is provided for mounting the brake pads 44 and the biasing member 46 in the brake disc slot 50 .
- the pad axle or pin 52 is retained to the first and second side caliper parts 41 and 42 with a spring clip 54 in a conventional manner.
- the brake pads 44 are movable mounted to the first and second side caliper parts 41 and 42 by the pad axle 52 and the spring clip 54 in a conventional manner.
- the biasing member 46 is a metal member that is disposed between the brake pads 44 to bias the brake pads 44 out of engagement with the disc brake rotor 22 in a conventional manner.
- the disc brake caliper 12 is a relatively conventional disc brake device, except for the connection between the first and second side caliper parts 41 and 42 .
- the disc brake caliper 12 is a relatively conventional fluid operated disc brake caliper. Therefore, specific and/or common features of the disc brake caliper 12 will not be discussed or illustrated in detail herein except to the extent that they relate to the connection between the first and second side caliper parts 41 and 42 as discussed below.
- the hydraulic brake hose 40 is fluidly connecting to the first and second side caliper parts 41 and 42 using a banjo bolt or fitting 56 .
- the banjo bolt 56 is short type and has inner hydraulic though hole for hydraulic communication with the hydraulic brake hose 40 .
- hydraulic fluid from the hydraulic brake hose 40 is feed to the first and second side caliper parts 41 and 42 via the banjo bolt 56 for operating the actuation unit 48 in a conventional manner.
- the actuation unit 48 is a conventional structure that basically includes a pair of movable pistons 60 .
- the pistons 60 are hydraulically actuated to move relative to the first and second side caliper parts 41 and 42 (i.e., the caliper housing) from a retracted (non-gripping) position to a gripping position in response to the fluid pressure from operation of the brake operating mechanism 16 in a conventional manner.
- the first and second side caliper parts 41 and 42 are preferably each a rigid metallic material such as cast aluminum or other suitable heat resistant material that can withstand the heat generated during braking.
- the first and second side caliper parts 41 and 42 are separate pieces that are manufactured using conventional manufacturing techniques such as casting and/or machining.
- the first side caliper part 41 is a one-piece, unitary member.
- the second side caliper part 42 is a one-piece, unitary member.
- first and second side caliper parts 41 and 42 are fixedly connected together without using a bolt, rivet or the like.
- a mechanical fastener such as a bolt, rivet or the like is not used in this first embodiment.
- the first and second side caliper parts 41 and 42 are fixedly connected together solely by one or more bonding materials.
- the term “bonding material” as used herein refers to a material that joins or affixes two or more objects together by adhering together two abutting surfaces.
- bonding material includes, but not limited to, adhesives, filler metals (e.g., soldering materials, brazing materials, welding materials, etc.) and melted base materials of the parts being joined.
- bonding material excludes hardware devices (e.g., bolts, screws, rivets, etc.) that mechanically joins or affixes two or more objects together.
- bonding refers to joining or affixing two or more objects together by adhering together two abutting surfaces with a bonding material.
- the disc brake caliper 12 is lighter in weight than a conventional disc brake caliper having the same sized parts but connected with one or more hardware devices (e.g., mechanical fasteners such as bolts).
- the first and second side caliper parts 41 and 42 are solely bonded together by a bonding material 62 such an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and second side caliper parts 41 and 42 that is melted.
- a bonding material 62 such an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and second side caliper parts 41 and 42 that is melted.
- the bicycle disc brake caliper 12 is constructed in such a manner as to be lighter in weight than a conventional disc brake caliper having a comparable size.
- the thickness of the bonding material 62 has been exaggerated in the figures for the sake of illustration.
- the first side caliper part 41 has an exteriorly facing surface 64 and an interiorly facing surface 66 .
- the exteriorly facing surface 64 is provided with a pair of mounting flanges 68 (e.g., bicycle mounting parts) for securing the bicycle disc brake caliper 12 to the front fork 18 by the bolts B.
- the interiorly facing surface 66 forms a first bonding surface that includes two bonding areas 66 a and 66 b that are spaced apart.
- the interiorly facing surface 66 can be configured with a large continuous bonding area or three or more separate bonding areas as needed and/or desired.
- the bonding areas 66 a and 66 b can be provided with recesses 66 c and 66 d , respectively, for receiving any excess of the bonding material 62 .
- the recesses 66 c and 66 d aid in preventing the bonding material 62 from flowing out from the circumference of the bonding areas 66 a and 66 b .
- any number of recesses can be used as needed and/or desired.
- the recesses 66 c and 66 d are shown as being straight grooves for the sake of simplicity of illustration. Of course, it will be apparent from this disclosure that the shape of the recesses can be any shape as needed and/or desired.
- the first side caliper part 41 is also provided with a first piston receiving cavity 70 and a first internal fluid passageway 72 .
- the first piston receiving cavity 70 is configured to slidably receiving one of the pistons 60 of the actuation unit 48 .
- the first internal fluid passageway 72 includes a first fluid opening or fluid inlet 72 a that is threaded to receive the banjo bolt 56 for fluidly connecting the hydraulic brake hose 40 to the first internal fluid passageway 72 .
- the banjo bolt 56 is threadedly engaged with the threaded portion of the first fluid inlet 72 a , and has an interior channel in fluid communication with the first fluid inlet 72 a .
- the first internal fluid passageway 72 further includes a first fluid conduit 72 b that interconnects the first fluid inlet 72 a to the first piston receiving cavity 70 .
- the second side caliper part 42 has an exteriorly facing surface 74 and an interiorly facing surface 76 .
- the interiorly facing surface 76 forms a first bonding surface that includes two bonding areas 76 a and 76 b that are spaced apart.
- the interiorly facing surface 76 can be configured with a large continuous bonding area or three or more separate bonding areas as needed and/or desired.
- the bonding areas 76 a and 76 b can be optionally provided with recesses for receiving any excess of the bonding material 62 , if needed and/or desired.
- the bonding areas 76 a and 76 b of the second side caliper part 42 mate with the bonding areas 66 a and 66 b of the first side caliper part 41 .
- the second side caliper part 42 is also provided with a second piston receiving cavity 80 and a second internal fluid passageway 82 .
- the second piston receiving cavity 80 is configured to slidably receiving one of the pistons 60 of the actuation unit 48 .
- the second internal fluid passageway 82 includes a second fluid opening or fluid inlet 82 a that is aligned with the first fluid inlet 72 a of the first side caliper part 41 for receiving hydraulic fluid from the first internal fluid passageway 72 .
- the banjo bolt 56 has an interior channel that is in fluid communication with the second fluid inlet 82 a .
- the second internal fluid passageway 82 further includes a second fluid conduit 82 b that interconnects the second fluid inlet 82 a to the second piston receiving cavity 80 .
- the internal fluid passageways 72 and 82 receive the hydraulic fluid from the brake operating mechanism 20 via the hydraulic brake hose 40 and the banjo bolt 56 , and then the internal fluid passageways 72 and 82 supply the fluid to the piston receiving cavities 70 and 80 . In this way, the hydraulic fluid enters the and second side caliper parts 41 and 42 through the fluid inlets 72 a and 82 a . Then hydraulic fluid flows into the piston receiving cavities 70 and 80 via the fluid conduits 72 b and 82 b to apply fluid pressure to the back sides of the pistons 60 on either side of the rotor 22 .
- the bicycle disc brake caliper 112 includes a first (left) side caliper part 141 and a second (right) side caliper part 142 in which a long banjo bolt or fitting 156 is used as a connection between the first and second side caliper parts 141 and 142 .
- the first and second side caliper parts 141 and 142 are identical to the first and second side caliper parts 41 and 42 , as discussed above, except that the first and second side caliper parts 141 and 142 have been modified to accommodate the long banjo bolt 156 .
- the first side caliper part 141 has an interiorly facing surface 166 that is provided with a first piston receiving cavity (not shown) for receiving one of the pistons 60 of the first embodiment.
- the first side caliper part 141 has a first internal fluid passageway 172 that includes a non-threaded first fluid opening or fluid inlet 172 a and a pair of first fluid conduit 172 b that interconnects the first fluid inlet 172 a to the first piston receiving cavity (not shown).
- the first side caliper part 141 has been modified to accommodate the long banjo bolt 156 .
- the second side caliper part 142 has an interiorly facing surface 176 that is provided with a second piston receiving cavity (not shown) for receiving one of the pistons 60 of the first embodiment.
- the second side caliper part 142 has a first internal fluid passageway 182 that includes a threaded second fluid opening or fluid inlet 182 a and a second fluid conduit 182 b that interconnects the second fluid inlet 182 a to the second piston receiving cavity (not shown).
- the second side caliper part 142 has been modified to accommodate the long banjo bolt 156 .
- first and second interiorly facing surfaces 166 and 176 of the first and second side caliper parts 141 and 142 are bonded together by a bonding material 162 .
- the bonding material 162 can be an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and second side caliper parts 141 and 142 that is melted.
- the first and second interiorly facing surfaces 166 and 176 have two separate bonding areas having the bonding material 162 .
- the bicycle disc brake caliper 212 includes a first (left) side caliper part 241 and a second (right) side caliper part 242 in which a banjo bolt or fitting 256 is used to supply hydraulic fluid to the first and second side caliper parts 241 and 242 .
- the banjo bolt 256 can be either a short banjo bolt (e.g., the banjo bolt 56 ) or a long banjo bolt (e.g., the banjo bolt 156 ).
- the first and second side caliper parts 241 and 242 can be configured similar to either the first and second side caliper parts 41 and 42 , or the first and second side caliper parts 141 and 142 .
- the only difference between the first and second side caliper parts 241 and 242 of this third embodiment and the prior embodiments is that the first and second side caliper parts 241 and 242 have been modified to accommodate a slim bolt connection using a slim bolt 258 (i.e., a connection bolt) that is threadedly engaged with a threaded hole or bore in one of the first and second side caliper parts 241 and 242 as discussed below.
- the bicycle disc brake caliper 212 uses bonding plus a slim bolt connection to hold the first and second side caliper parts 241 and 242 together in this third embodiment.
- the first side caliper part 241 has an interiorly facing surface 266 that is provided with a first piston receiving cavity 270 for receiving one of the pistons 60 of the first embodiment. Also similar to the first and second embodiments, the first side caliper part 241 has a first internal fluid passageway 272 that includes a first fluid opening or fluid inlet 272 a and at least one first fluid conduit 272 b that interconnects the first fluid inlet 272 a to the first piston receiving cavity 270 .
- the first fluid inlet 272 a is either threaded for receiving a short banjo bolt, like the first embodiment, or non-threaded for receiving a long banjo bolt, like the second embodiment.
- the first side caliper part 241 has a non-threaded hole 278 for receiving the slim bolt 258 .
- the first side caliper part 241 has been modified to accommodate the slim bolt 258 .
- the second side caliper part 242 has an interiorly facing surface 276 that is provided with a second piston receiving cavity 280 for receiving one of the pistons 60 of the first embodiment. Also similar to the first and second embodiments, the second side caliper part 242 has a first internal fluid passageway 282 that includes a second fluid opening or fluid inlet 282 a and a second fluid conduit 282 b that interconnects the second fluid inlet 282 a to the second piston receiving cavity 280 . However, in the third embodiment, the second side caliper part 242 has a threaded hole 288 for receiving the slim bolt 258 . Thus, the second side caliper part 242 has been modified to accommodate the slim bolt 258 .
- the slim bolt 258 has an outer thread diameter of four millimeters as compared to a conventional caliper that uses bolts with an outer thread diameter of six millimeters.
- a reduction in weight can be obtained in the bicycle disc brake caliper 212 as compared to a conventional caliper that uses bolts with an outer thread diameter of six millimeters.
- first and second interiorly facing surfaces 266 and 276 of the first and second side caliper parts 241 and 242 are bonded together by a bonding material 262 .
- the bonding material 262 can be an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and second side caliper parts 241 and 242 that is melted.
- the first interiorly facing surface 266 has two separate bonding areas 266 a and 266 b having the bonding material 262
- the second interiorly facing surface 276 has two separate bonding areas 276 a and 276 b having the bonding material 262 .
- the bicycle disc brake caliper 312 in accordance with a fourth embodiment will now be explained.
- the fourth embodiment is most similar to the third embodiment, except that the slim bolt 258 is not used in this fourth embodiment.
- the bicycle disc brake caliper 312 includes a first (left) side caliper part 341 and a second (right) side caliper part 342 in which a banjo bolt or fitting 356 is used to supply hydraulic fluid to the first and second side caliper parts 341 and 342 .
- the banjo bolt 356 can be either a short banjo bolt (e.g., the banjo bolt 56 ) or a long banjo bolt (e.g., the banjo bolt 156 ).
- the first and second side caliper parts 341 and 342 can be configured similar to either the first and second side caliper parts 41 and 42 , or the first and second side caliper parts 141 and 142 .
- the only difference between the first and second side caliper parts 341 and 342 of this fourth embodiment and the third embodiment is that the first and second side caliper parts 341 and 342 have been modified to accommodate a pin connection using a hollow pin 358 (i.e., a connection pin) as discussed below.
- the bicycle disc brake caliper 312 uses bonding plus a pin connection to hold the first and second side caliper parts 341 and 342 together in this fourth embodiment.
- the first side caliper part 341 has an interiorly facing surface 366 that is provided with a first piston receiving cavity 370 for receiving one of the pistons 60 of the first embodiment. Also similar to the prior embodiments, the first side caliper part 341 has a first internal fluid passageway 372 that includes a first fluid opening or fluid inlet 372 a and at least one first fluid conduit 372 b that interconnects the first fluid inlet 372 a to the first piston receiving cavity 370 .
- the first fluid inlet 372 a is either threaded for receiving a short banjo bolt, like the first embodiment, or non-threaded for receiving a long banjo bolt, like the second embodiment.
- the first side caliper part 341 has a hole 378 for receiving the connection pin 358 .
- the first side caliper part 341 has been modified to accommodate the connection pin 358 .
- the second side caliper part 342 has an interiorly facing surface 376 that is provided with a second piston receiving cavity 380 for receiving one of the pistons 60 of the first embodiment. Also similar to the prior embodiments, the second side caliper part 342 has a first internal fluid passageway 382 that includes a second fluid opening or fluid inlet 382 a and a second fluid conduit 382 b that interconnects the second fluid inlet 382 a to the second piston receiving cavity 380 . However, in the fourth embodiment, the second side caliper part 342 has a hole 388 for receiving the connection pin 358 . Thus, the second side caliper part 342 has been modified to accommodate the connection pin 358 .
- first and second interiorly facing surfaces 366 and 376 of the first and second side caliper parts 341 and 342 are bonded together by a bonding material 362 .
- the bonding material 362 can be an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and second side caliper parts 341 and 342 that is melted.
- the first interiorly facing surface 366 has two separate bonding areas 366 a and 366 b having the bonding material 362
- the second interiorly facing surface 376 has two separate bonding areas 376 a and 376 b having the bonding material 362 .
- connection pin 358 is press fitted and/or adhesively secured in the holes 378 and 388 of the first and second side caliper parts 341 and 342 .
- one of the holes 378 and 388 of the first and second side caliper parts 341 and 342 can be threaded, while the other one of the holes 378 and 388 of the first and second side caliper parts 341 and 342 can be a non threaded hole in which the connection pin 358 is press fitted and/or adhesively secured. In this way, the connection pin 358 .
- first and second side caliper parts 341 and 342 can be considered to include a first mating portion, and one of the first and second side caliper parts 341 and 342 can be considered to include a second mating portion that mates with the first mating portion. Also, while only one connection pin is used, additional connection pins can be used as needed and/or desired.
- first and second side caliper parts 441 and 442 are illustrated for forming a bicycle disc brake caliper in accordance with a fifth embodiment.
- the first and second side caliper parts 441 and 442 replace the first and second side caliper parts of the first or second embodiments to form a bicycle disc brake caliper that is connected to the hydraulic brake hose 40 using either the banjo bolt 56 or 156 .
- the first and second side caliper parts 441 and 442 are identical to the first and second side caliper parts 41 or 141 and 42 or 142 , respectively, except that the first and second side caliper parts 441 and 442 are each made of two pieces instead of each being formed as a one-piece member.
- the first side caliper part 441 includes two portions 441 a and 441 b that are bonded together, while the second side caliper part 442 includes two portions 442 a and 442 b that are bonded together.
- the descriptions of the parts of the fifth embodiment that are the same as the prior embodiments may be omitted for the sake of brevity. Thus, only the differences between the fifth embodiment and the prior embodiments will be discussed.
- the first and second side caliper parts 441 and 442 are bonded together by a bonding material 462 at two spaced apart areas.
- the bonding material 462 is also used for bonding the two portions 441 a and 441 b together as well as being used for bonding the two portions 442 a and 442 b together.
- the bonding material 462 does not need to be the same bonding material for each of the bonds.
- interiorly facing surfaces 466 and 467 of the first and second side caliper parts 441 and 442 can be adhesively bonded together, while the two portions 441 a and 441 b can be bonded together by a brazing material and the two portions 442 a and 442 b can also be bonded together by a brazing material or other bonding material.
- first and second side caliper parts 541 and 542 are illustrated for forming a bicycle disc brake caliper in accordance with a sixth embodiment.
- the first and second side caliper parts 541 and 542 replace the first and second side caliper parts of the first or second embodiments to form a bicycle disc brake caliper that is connected to the hydraulic brake hose 40 using either the banjo bolt 56 or 156 .
- the first and second side caliper parts 541 and 542 are identical to the first and second side caliper parts 41 or 141 and 42 or 142 , respectively, except that the first and second side caliper parts 541 and 542 are each made of two pieces instead of each being formed as a one-piece member.
- first side caliper part 541 includes two portions 541 a and 541 b that are bonded together
- second side caliper part 542 includes two portions 542 a and 542 b that are bonded together.
- the first and second side caliper parts 541 and 542 are bonded together by a bonding material 562 at two spaced apart areas.
- the bonding material 562 is also used for bonding the two portions 541 a and 541 b together as well as being used for bonding the two portions 542 a and 542 b together.
- the bonding material 562 does not need to be the same bonding material for each of the bonds.
- interiorly facing surfaces 566 and 567 of the first and second side caliper parts 541 and 542 can be adhesively bonded together, while the two portions 541 a and 541 b can be bonded together by a brazing material and the two portions 542 a and 542 b can also be bonded together by a brazing material or other bonding material.
- disc brake calipers 12 , 112 , 212 and 312 can be used in a rear disc brake system as needed and/or desired.
- the disc brake caliper 12 is illustrated as a hydraulically actuated disc brake device, housings of the disc brake calipers 12 , 112 , 212 and 312 can be modified to be used with a mechanically actuated disc brake device as needed and/or desired.
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Abstract
A bicycle disc brake caliper is basically provided with a first side caliper part and a second side caliper part. The first side caliper part includes a first bonding surface. The second side caliper part includes a second bonding surface. The first and second bonding surfaces of the first and second side caliper parts are fixedly bonded together by a bonding material with a brake disc slot being defined between the first and second side caliper parts.
Description
- 1. Field of the Invention
- This invention generally relates to a bicycle disc brake caliper. More specifically, the present invention relates to a bicycle disc brake caliper that has two with caliper parts or housings that are fixed together.
- 2. Background Information
- In recent years, certain high performance bicycles have included disc brakes. Disc brake systems provide a substantial braking power in relationship to the amount of braking force applied to the brake lever. Also, disc brake systems typically provide a high level of consistency in all types of weather and riding conditions. Disc brake systems typically include a caliper housing, a first movable brake pad and a second fixed or movable brake pad. Disc brakes can be hydraulically actuated or mechanically actuated for moving the movable brake pad(s). The brake pads are positioned on either side of a rotor, which is attached to the front or back wheel of a bicycle. The brake pads are pressed against a brake disc or rotor that is fixed to the wheel to slow down or stop the rotation of the disc, and thus, slow down or stop the rotation of the wheel.
- In the case of a mechanically actuated disc brake device, each movable brake pad is typically attached to a piston that is movable in response to operation of a camming mechanism. Upon the operation of the camming mechanism to move the piston or pistons, the brake pads come into contact with the rotor for applying frictional resistance and causing the bicycle to slow down or stop. One example of a mechanically actuated disc brake device is disclosed in U.S. Pat. No. 6,557,671 (assigned to Shimano Inc.).
- In the case of a hydraulically actuated disc brake device, the movable brake pad is typically attached to a piston that is movable in response to fluid pressure applied via a hydraulic fluid conduit in the caliper housing. Upon the application of fluid pressure to the piston or pistons, the brake pads come into contact with the rotor for applying frictional resistance and causing the bicycle to slow down or stop. Examples of a hydraulically actuated disc brake devices are disclosed in U.S. Patent Application Publication No. 2011/0000748A1 (assigned to Shimano Inc.) and U.S. Patent Application Publication No. 2011/0000749A1 (assigned to Shimano Inc.).
- While disc brake systems provide excellent performance, such hydraulic disc brake systems can be relatively heavy. Thus, one aspect present in this disclosure is to provide a bicycle disc brake caliper that is lightweight.
- In view of the state of the known technology, a bicycle disc brake caliper is basically provided that comprises a first side caliper part and a second side caliper part. The first side caliper part includes a first bonding surface. The second side caliper part includes a second bonding surface. The first and second bonding surfaces of the first and second side caliper parts are fixedly bonded together by a bonding material with a brake disc slot being defined between the first and second side caliper parts.
- These and other objects, features, aspects and advantages of the disclosed bicycle disc brake caliper will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses preferred embodiments.
- Referring now to the attached drawings which form a part of this original disclosure:
-
FIG. 1 is a partial side elevational view of a front disc brake system including a front disc brake device (e.g., a bicycle disc brake caliper) coupled to a front fork and a front disc brake controller coupled to a handlebar) that operates the front disc brake device in accordance with a first embodiment; -
FIG. 2 is an exploded perspective view of the disc brake device illustrated inFIG. 1 ; -
FIG. 3 is an enlarged perspective view of the disc brake device illustrated inFIGS. 1 and 2 ; -
FIG. 4 is a rear end view of the disc brake device illustrated inFIGS. 1 to 3 ; -
FIG. 5 is a cross sectional view of the disc brake device illustrated inFIGS. 1 to 4 as seen along section line 5-5 ofFIG. 3 ; -
FIG. 6 is an elevational view of the inside surface of the first side caliper part of the disc brake device illustrated inFIGS. 1 to 5 ; -
FIG. 7 is an elevational view of the inside surface of the second side caliper part of the disc brake device illustrated inFIGS. 1 to 5 ; -
FIG. 8 is an exploded perspective view of a disc brake device in accordance with a second embodiment; -
FIG. 9 is a cross sectional view of the disc brake device illustrated inFIG. 8 as seen along section line that is similar toFIG. 5 ; -
FIG. 10 is a perspective view of a front disc brake device (e.g., a bicycle disc brake caliper) in accordance with a third embodiment; -
FIG. 11 is a rear end view of the front disc brake device illustrated inFIG. 10 ; -
FIG. 12 is an elevational view of the inside surface of the first side caliper part of the front disc brake device illustrated inFIGS. 10 and 11 ; -
FIG. 13 is an elevational view of the inside surface of the second side caliper part of the front disc brake device illustrated inFIGS. 10 to 12 ; -
FIG. 14 is a perspective view of a front disc brake device (e.g., a bicycle disc brake caliper) in accordance with a fourth embodiment; -
FIG. 15 is a rear end view of the front disc brake device illustrated inFIG. 14 ; -
FIG. 16 is an elevational view of the inside surface of the first side caliper part of the front disc brake device illustrated inFIGS. 14 and 15 ; -
FIG. 17 is a perspective view of the second side caliper part of the disc brake device illustrated inFIGS. 14 to 16 ; -
FIG. 18 is an elevational view of the inside surface of the second side caliper part of the disc brake device illustrated inFIGS. 14 to 17 ; -
FIG. 19 is an elevational view of an inside surface of a first side caliper part for a disc brake device in accordance with a fifth embodiment; -
FIG. 20 is an elevational view of an inside surface of a second side caliper part that is used with the first side caliper part illustrated inFIG. 19 in accordance with the fifth embodiment; -
FIG. 21 is an elevational view an inside surface of a first side caliper part for a disc brake device in accordance with a sixth embodiment; and -
FIG. 22 is an elevational view of an inside surface of a second side caliper part that is used with the first side caliper part illustrated inFIG. 21 in accordance with the sixth embodiment. - Selected embodiments will now be explained with reference to the drawings. It will be apparent to those skilled in the art from this disclosure that the following descriptions of the embodiments are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
- Referring initially to
FIG. 1 , a frontdisc brake system 10 is illustrated that includes a bicycledisc brake caliper 12 and a brake operating (actuating)mechanism 16 in accordance with a first embodiment. Thedisc brake caliper 12 is mounted to afront fork 18 of a bicycle (not shown) by abracket 20 using a pair of bolts B. Thedisc brake caliper 12 is constructed for selectively gripping (stopping rotation) of adisc brake rotor 22 that is fixedly attached to a hub (not shown) of a bicycle wheel (not shown). - As seen in
FIG. 1 , basically, thebrake operating mechanism 16 is designed to actuate thedisc brake caliper 12 in a conventional manner to apply a forcible gripping action on thedisc brake rotor 22 to stop rotation of the bicycle wheel. Thebrake operating mechanism 16 basically has amaster cylinder 24, aclamp 26 and abrake lever 28. Thebrake lever 28 is pivotally coupled to themaster cylinder 24 for operating thedisc brake caliper 12. Thebrake operating mechanism 16 is supported on ahandlebar 30 via theclamp 26 in a conventional manner. Themaster cylinder 24 also has ahydraulic fluid reservoir 36 that is in fluid communication with themaster cylinder bore 32. Thehydraulic fluid reservoir 36 contains hydraulic fluid (mineral oil) which is pressurized by movement of thepiston 34 in themaster cylinder 24 in response to the pivotal movement of thebrake lever 28 towards thehandlebar 30. Themaster cylinder 24 has anoutlet port 38 for supplying hydraulic fluid to thedisc brake caliper 12 via ahydraulic brake hose 40. Since the operation of thebrake operating mechanism 16 is conventional, the parts (e.g., themaster cylinder 24, the and the piston 34) of thebrake operating mechanism 16 will not be discussed or shown in further detail herein. - As seen in
FIGS. 2 to 4 , thedisc brake caliper 12 includes a first (left)side caliper part 41, a second (right)side caliper part 42, a pair of brake pads orfriction members 44, a biasingmember 46 and an actuation unit 48 (FIG. 4 ). The first and secondside caliper parts brake disc slot 50 being defined between the first and secondside caliper parts pin 52 is provided for mounting thebrake pads 44 and the biasingmember 46 in thebrake disc slot 50. The pad axle orpin 52 is retained to the first and secondside caliper parts spring clip 54 in a conventional manner. Thus, thebrake pads 44 are movable mounted to the first and secondside caliper parts pad axle 52 and thespring clip 54 in a conventional manner. The biasingmember 46 is a metal member that is disposed between thebrake pads 44 to bias thebrake pads 44 out of engagement with thedisc brake rotor 22 in a conventional manner. - The
disc brake caliper 12 is a relatively conventional disc brake device, except for the connection between the first and secondside caliper parts side caliper parts disc brake caliper 12 is a relatively conventional fluid operated disc brake caliper. Therefore, specific and/or common features of thedisc brake caliper 12 will not be discussed or illustrated in detail herein except to the extent that they relate to the connection between the first and secondside caliper parts - In the first illustrated embodiment, the
hydraulic brake hose 40 is fluidly connecting to the first and secondside caliper parts banjo bolt 56 is short type and has inner hydraulic though hole for hydraulic communication with thehydraulic brake hose 40. Thus, hydraulic fluid from thehydraulic brake hose 40 is feed to the first and secondside caliper parts banjo bolt 56 for operating theactuation unit 48 in a conventional manner. Theactuation unit 48 is a conventional structure that basically includes a pair ofmovable pistons 60. Thepistons 60 are hydraulically actuated to move relative to the first and secondside caliper parts 41 and 42 (i.e., the caliper housing) from a retracted (non-gripping) position to a gripping position in response to the fluid pressure from operation of thebrake operating mechanism 16 in a conventional manner. - The first and second
side caliper parts side caliper parts side caliper part 41 is a one-piece, unitary member. Likewise, the secondside caliper part 42 is a one-piece, unitary member. - In this first embodiment, as the first and second
side caliper parts side caliper parts side caliper parts disc brake caliper 12 is lighter in weight than a conventional disc brake caliper having the same sized parts but connected with one or more hardware devices (e.g., mechanical fasteners such as bolts). - In this first embodiment, as seen in
FIGS. 4 to 6 , the first and secondside caliper parts bonding material 62 such an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and secondside caliper parts disc brake caliper 12 is constructed in such a manner as to be lighter in weight than a conventional disc brake caliper having a comparable size. The thickness of thebonding material 62 has been exaggerated in the figures for the sake of illustration. - The first
side caliper part 41 has an exteriorly facingsurface 64 and an interiorly facingsurface 66. Theexteriorly facing surface 64 is provided with a pair of mounting flanges 68 (e.g., bicycle mounting parts) for securing the bicycledisc brake caliper 12 to thefront fork 18 by the bolts B. The interiorly facingsurface 66 forms a first bonding surface that includes two bonding areas 66 a and 66 b that are spaced apart. Alternatively, the interiorly facingsurface 66 can be configured with a large continuous bonding area or three or more separate bonding areas as needed and/or desired. Optionally, as shown, the bonding areas 66 a and 66 b can be provided with recesses 66 c and 66 d, respectively, for receiving any excess of thebonding material 62. In other words, the recesses 66 c and 66 d aid in preventing thebonding material 62 from flowing out from the circumference of the bonding areas 66 a and 66 b. While only one recess is shown in each of the bonding areas 66 a and 66 b, any number of recesses can be used as needed and/or desired. Also the recesses 66 c and 66 d are shown as being straight grooves for the sake of simplicity of illustration. Of course, it will be apparent from this disclosure that the shape of the recesses can be any shape as needed and/or desired. - The first
side caliper part 41 is also provided with a first piston receiving cavity 70 and a firstinternal fluid passageway 72. The first piston receiving cavity 70 is configured to slidably receiving one of thepistons 60 of theactuation unit 48. The firstinternal fluid passageway 72 includes a first fluid opening orfluid inlet 72 a that is threaded to receive thebanjo bolt 56 for fluidly connecting thehydraulic brake hose 40 to the firstinternal fluid passageway 72. Thebanjo bolt 56 is threadedly engaged with the threaded portion of thefirst fluid inlet 72 a, and has an interior channel in fluid communication with thefirst fluid inlet 72 a. The firstinternal fluid passageway 72 further includes a firstfluid conduit 72 b that interconnects thefirst fluid inlet 72 a to the first piston receiving cavity 70. - The second
side caliper part 42 has an exteriorly facingsurface 74 and an interiorly facingsurface 76. The interiorly facingsurface 76 forms a first bonding surface that includes two bonding areas 76 a and 76 b that are spaced apart. Alternatively, the interiorly facingsurface 76 can be configured with a large continuous bonding area or three or more separate bonding areas as needed and/or desired. Also the bonding areas 76 a and 76 b can be optionally provided with recesses for receiving any excess of thebonding material 62, if needed and/or desired. In any event, the bonding areas 76 a and 76 b of the secondside caliper part 42 mate with the bonding areas 66 a and 66 b of the firstside caliper part 41. - The second
side caliper part 42 is also provided with a second piston receiving cavity 80 and a secondinternal fluid passageway 82. The second piston receiving cavity 80 is configured to slidably receiving one of thepistons 60 of theactuation unit 48. The secondinternal fluid passageway 82 includes a second fluid opening orfluid inlet 82 a that is aligned with thefirst fluid inlet 72 a of the firstside caliper part 41 for receiving hydraulic fluid from the firstinternal fluid passageway 72. In particular, thebanjo bolt 56 has an interior channel that is in fluid communication with thesecond fluid inlet 82 a. The secondinternal fluid passageway 82 further includes a secondfluid conduit 82 b that interconnects thesecond fluid inlet 82 a to the second piston receiving cavity 80. - The
internal fluid passageways brake operating mechanism 20 via thehydraulic brake hose 40 and thebanjo bolt 56, and then theinternal fluid passageways side caliper parts fluid inlets fluid conduits pistons 60 on either side of therotor 22. - Referring now to
FIGS. 8 and 9 , a bicycledisc brake caliper 112 in accordance with a second embodiment will now be explained. Here, in the second embodiment, the bicycledisc brake caliper 112 includes a first (left)side caliper part 141 and a second (right)side caliper part 142 in which a long banjo bolt or fitting 156 is used as a connection between the first and secondside caliper parts side caliper parts side caliper parts side caliper parts long banjo bolt 156. In view of the similarity between the first and second embodiments, the descriptions of the parts of the second embodiment that are the same as the first embodiment may be omitted for the sake of brevity. Moreover, the parts of the second embodiment that are common with the first embodiment are identified with the same reference numeral. Thus, only the differences between the first and second embodiments will be discussed. - Here, similar to the first embodiment, the first
side caliper part 141 has an interiorly facingsurface 166 that is provided with a first piston receiving cavity (not shown) for receiving one of thepistons 60 of the first embodiment. However, in the second embodiment, the firstside caliper part 141 has a firstinternal fluid passageway 172 that includes a non-threaded first fluid opening orfluid inlet 172 a and a pair of firstfluid conduit 172 b that interconnects the firstfluid inlet 172 a to the first piston receiving cavity (not shown). Thus, the firstside caliper part 141 has been modified to accommodate thelong banjo bolt 156. - Similar to the first embodiment, the second
side caliper part 142 has an interiorly facingsurface 176 that is provided with a second piston receiving cavity (not shown) for receiving one of thepistons 60 of the first embodiment. However, in the second embodiment, the secondside caliper part 142 has a firstinternal fluid passageway 182 that includes a threaded second fluid opening orfluid inlet 182 a and a secondfluid conduit 182 b that interconnects the secondfluid inlet 182 a to the second piston receiving cavity (not shown). Thus, the secondside caliper part 142 has been modified to accommodate thelong banjo bolt 156. - Similar to the first embodiment, the first and second interiorly facing
surfaces side caliper parts bonding material 162. Thebonding material 162 can be an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and secondside caliper parts surfaces bonding material 162. - Referring now to
FIGS. 10 to 13 , a bicycledisc brake caliper 212 in accordance with a third embodiment will now be explained. Here, in the third embodiment, the bicycledisc brake caliper 212 includes a first (left)side caliper part 241 and a second (right)side caliper part 242 in which a banjo bolt or fitting 256 is used to supply hydraulic fluid to the first and secondside caliper parts banjo bolt 256 can be either a short banjo bolt (e.g., the banjo bolt 56) or a long banjo bolt (e.g., the banjo bolt 156). In other words, depending on whether a long or short type of banjo bolt is used, the first and secondside caliper parts side caliper parts side caliper parts side caliper parts side caliper parts side caliper parts disc brake caliper 212 uses bonding plus a slim bolt connection to hold the first and secondside caliper parts - In view of the similarity between the third embodiment and the prior embodiments, the descriptions of the parts of the third embodiment that are the same as the prior embodiments may be omitted for the sake of brevity. Moreover, the parts of the third embodiment that are common with the first embodiment are identified with the same reference numeral. Thus, only the differences between the third embodiment and the prior embodiments will be discussed.
- Here, similar to the first and second embodiments, the first
side caliper part 241 has an interiorly facingsurface 266 that is provided with a firstpiston receiving cavity 270 for receiving one of thepistons 60 of the first embodiment. Also similar to the first and second embodiments, the firstside caliper part 241 has a firstinternal fluid passageway 272 that includes a first fluid opening orfluid inlet 272 a and at least one firstfluid conduit 272 b that interconnects the firstfluid inlet 272 a to the firstpiston receiving cavity 270. The firstfluid inlet 272 a is either threaded for receiving a short banjo bolt, like the first embodiment, or non-threaded for receiving a long banjo bolt, like the second embodiment. However, in the third embodiment, the firstside caliper part 241 has anon-threaded hole 278 for receiving theslim bolt 258. Thus, the firstside caliper part 241 has been modified to accommodate theslim bolt 258. - Similar to the first embodiment, the second
side caliper part 242 has an interiorly facingsurface 276 that is provided with a secondpiston receiving cavity 280 for receiving one of thepistons 60 of the first embodiment. Also similar to the first and second embodiments, the secondside caliper part 242 has a firstinternal fluid passageway 282 that includes a second fluid opening orfluid inlet 282 a and a secondfluid conduit 282 b that interconnects the secondfluid inlet 282 a to the secondpiston receiving cavity 280. However, in the third embodiment, the secondside caliper part 242 has a threadedhole 288 for receiving theslim bolt 258. Thus, the secondside caliper part 242 has been modified to accommodate theslim bolt 258. Theslim bolt 258 has an outer thread diameter of four millimeters as compared to a conventional caliper that uses bolts with an outer thread diameter of six millimeters. Thus, a reduction in weight can be obtained in the bicycledisc brake caliper 212 as compared to a conventional caliper that uses bolts with an outer thread diameter of six millimeters. - Similar to the prior embodiments, the first and second interiorly facing
surfaces side caliper parts bonding material 262. Thebonding material 262 can be an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and secondside caliper parts interiorly facing surface 266 has twoseparate bonding areas bonding material 262, while the secondinteriorly facing surface 276 has twoseparate bonding areas bonding material 262. - Referring now to
FIGS. 14 to 18 , a bicycledisc brake caliper 312 in accordance with a fourth embodiment will now be explained. The fourth embodiment is most similar to the third embodiment, except that theslim bolt 258 is not used in this fourth embodiment. Here, in the fourth embodiment, the bicycledisc brake caliper 312 includes a first (left)side caliper part 341 and a second (right)side caliper part 342 in which a banjo bolt or fitting 356 is used to supply hydraulic fluid to the first and secondside caliper parts banjo bolt 356 can be either a short banjo bolt (e.g., the banjo bolt 56) or a long banjo bolt (e.g., the banjo bolt 156). In other words, depending on whether a long or short type of banjo bolt is used, the first and secondside caliper parts side caliper parts side caliper parts side caliper parts side caliper parts disc brake caliper 312 uses bonding plus a pin connection to hold the first and secondside caliper parts - In view of the similarity between the third and fourth embodiments, the descriptions of the parts of the fourth embodiment that are the same as the prior embodiments may be omitted for the sake of brevity. Moreover, the parts of the fourth embodiment that are common with the first embodiment are identified with the same reference numeral. Thus, only the differences between the fourth embodiment and the prior embodiments will be discussed.
- Here, similar to the prior embodiments, the first
side caliper part 341 has an interiorly facingsurface 366 that is provided with a firstpiston receiving cavity 370 for receiving one of thepistons 60 of the first embodiment. Also similar to the prior embodiments, the firstside caliper part 341 has a firstinternal fluid passageway 372 that includes a first fluid opening orfluid inlet 372 a and at least one firstfluid conduit 372 b that interconnects the firstfluid inlet 372 a to the firstpiston receiving cavity 370. The firstfluid inlet 372 a is either threaded for receiving a short banjo bolt, like the first embodiment, or non-threaded for receiving a long banjo bolt, like the second embodiment. However, in the fourth embodiment, the firstside caliper part 341 has ahole 378 for receiving theconnection pin 358. Thus, the firstside caliper part 341 has been modified to accommodate theconnection pin 358. - Similar to the prior embodiments, the second
side caliper part 342 has an interiorly facingsurface 376 that is provided with a secondpiston receiving cavity 380 for receiving one of thepistons 60 of the first embodiment. Also similar to the prior embodiments, the secondside caliper part 342 has a firstinternal fluid passageway 382 that includes a second fluid opening orfluid inlet 382 a and a secondfluid conduit 382 b that interconnects the secondfluid inlet 382 a to the secondpiston receiving cavity 380. However, in the fourth embodiment, the secondside caliper part 342 has ahole 388 for receiving theconnection pin 358. Thus, the secondside caliper part 342 has been modified to accommodate theconnection pin 358. - Similar to the prior embodiments, the first and second interiorly facing
surfaces side caliper parts bonding material 362. Thebonding material 362 can be an adhesive, a filler metal (e.g., a soldering material, a brazing material, a welding material, etc.) and/or material from the first and secondside caliper parts interiorly facing surface 366 has twoseparate bonding areas bonding material 362, while the secondinteriorly facing surface 376 has twoseparate bonding areas bonding material 362. - Preferably, the
connection pin 358 is press fitted and/or adhesively secured in theholes side caliper parts holes side caliper parts holes side caliper parts connection pin 358 is press fitted and/or adhesively secured. In this way, theconnection pin 358. One of the first and secondside caliper parts side caliper parts - Referring now to
FIGS. 19 and 20 , first and secondside caliper parts side caliper parts hydraulic brake hose 40 using either thebanjo bolt side caliper parts side caliper parts side caliper parts side caliper part 441 includes twoportions side caliper part 442 includes twoportions - Here, in the fifth embodiment, similar to the prior embodiments, the first and second
side caliper parts bonding material 462 at two spaced apart areas. However, thebonding material 462 is also used for bonding the twoportions portions bonding material 462 does not need to be the same bonding material for each of the bonds. For example, interiorly facingsurfaces 466 and 467 of the first and secondside caliper parts portions portions - Referring now to
FIGS. 21 and 22 , first and secondside caliper parts side caliper parts hydraulic brake hose 40 using either thebanjo bolt side caliper parts side caliper parts side caliper parts side caliper part 541 includes twoportions side caliper part 542 includes twoportions - Here, in the sixth embodiment, similar to the prior embodiments, the first and second
side caliper parts bonding material 562 at two spaced apart areas. However, thebonding material 562 is also used for bonding the twoportions portions bonding material 562 does not need to be the same bonding material for each of the bonds. For example, interiorly facingsurfaces 566 and 567 of the first and secondside caliper parts portions portions - Of course, it will be apparent to those skilled in the art from this disclosure that the
disc brake calipers disc brake caliper 12 is illustrated as a hydraulically actuated disc brake device, housings of thedisc brake calipers - While only selected embodiments have been chosen to illustrate the present invention, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made herein without departing from the scope of the invention as defined in the appended claims. For example, the size, shape, location or orientation of the various components can be changed as needed and/or desired. Components that are shown directly connected or contacting each other can have intermediate structures disposed between them. The functions of one element can be performed by two, and vice versa. The structures and functions of one embodiment can be adopted in another embodiment. It is not necessary for all advantages to be present in a particular embodiment at the same time. Every feature which is unique from the prior art, alone or in combination with other features, also should be considered a separate description of further inventions by the applicant, including the structural and/or functional concepts embodied by such feature(s). Thus, the foregoing descriptions of the embodiments according to the present invention are provided for illustration only, and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
Claims (12)
1. A bicycle disc brake caliper comprising:
a first side caliper part including a first bonding surface; and
a second side caliper part including a second bonding surface, the first and second bonding surfaces of the first and second side caliper parts being fixedly bonded together by a bonding material with a brake disc slot being defined between the first and second side caliper parts.
2. The bicycle disc brake caliper according to claim 1 , wherein
at least one of the first and second side caliper parts includes a bicycle mounting part.
3. The bicycle disc brake caliper according to claim 1 , wherein
at least one of the first and second bonding surfaces has a recess for receiving the bonding material.
4. The bicycle disc brake caliper according to claim 1 , wherein
each of the first and second bonding surfaces includes at least two bonding areas that are spaced apart.
5. The bicycle disc brake caliper according to claim 1 , wherein
the first and second side caliper parts are solely fixed together by the bonding material.
6. The bicycle disc brake caliper according to claim 1 , further comprising
at least one connection bolt threadedly engaged with a threaded hole in one of the first and second side caliper parts.
7. The bicycle disc brake caliper according to claim 1 , wherein
one of the first and second side caliper parts includes a first mating portion, and one of the first and second side caliper parts includes a second mating portion that mates with the first mating portion.
8. The bicycle disc brake caliper according to claim 1 , further comprising
at least one connection pin fixed in a hole located in each of the first and second side caliper parts.
9. The bicycle disc brake caliper according to claim 8 , wherein
the connection pin is press fitted into the holes of the first and second side caliper parts.
10. The bicycle disc brake caliper according to claim 8 , wherein
the connection pin is adhesively secured in the holes of the first and second side caliper parts.
11. The bicycle disc brake caliper according to claim 1 , further comprising
a banjo bolt threadedly engaged with a threaded hole in one of the first and second side caliper parts, the banjo bolt having an interior channel in fluid communication with a fluid passage of the one of the first and second side caliper parts.
12. The bicycle disc brake caliper according to claim 1 , wherein
at least one of the first and second side caliper parts includes at least two portions that are fixedly bonded together.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/217,331 US20130048444A1 (en) | 2011-08-25 | 2011-08-25 | Bicycle disc brake caliper |
TW101106544A TWI505964B (en) | 2011-08-25 | 2012-02-29 | Bicycle disc brake caliper |
CN201210102736.0A CN102951244B (en) | 2011-08-25 | 2012-04-10 | Bicycle disk brake caliper |
DE102012214135.9A DE102012214135B4 (en) | 2011-08-25 | 2012-08-09 | Bicycle disc brake caliper |
US14/600,929 US9551389B2 (en) | 2011-08-25 | 2015-01-20 | Bicycle disc brake caliper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/217,331 US20130048444A1 (en) | 2011-08-25 | 2011-08-25 | Bicycle disc brake caliper |
Related Child Applications (1)
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US14/600,929 Division US9551389B2 (en) | 2011-08-25 | 2015-01-20 | Bicycle disc brake caliper |
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US20130048444A1 true US20130048444A1 (en) | 2013-02-28 |
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US13/217,331 Abandoned US20130048444A1 (en) | 2011-08-25 | 2011-08-25 | Bicycle disc brake caliper |
US14/600,929 Active US9551389B2 (en) | 2011-08-25 | 2015-01-20 | Bicycle disc brake caliper |
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US14/600,929 Active US9551389B2 (en) | 2011-08-25 | 2015-01-20 | Bicycle disc brake caliper |
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US (2) | US20130048444A1 (en) |
CN (1) | CN102951244B (en) |
DE (1) | DE102012214135B4 (en) |
TW (1) | TWI505964B (en) |
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US9193413B1 (en) * | 2014-06-11 | 2015-11-24 | Shimano Inc. | Bicycle disc brake caliper |
US9309938B2 (en) * | 2014-04-23 | 2016-04-12 | Shimano Inc. | Bicycle brake caliper assembly |
US9347505B2 (en) * | 2014-01-30 | 2016-05-24 | Shimano Inc. | Disc brake caliper and base member |
US9365259B2 (en) | 2013-12-26 | 2016-06-14 | Shimano Inc. | Disc brake caliper |
US9533733B2 (en) | 2013-06-28 | 2017-01-03 | Shimano Inc. | Disc brake caliper and disc brake caliper assembly |
US9828059B2 (en) | 2016-04-12 | 2017-11-28 | Shimano, Inc. | Bicycle disc brake caliper with brake pad spacer |
US20180290707A1 (en) * | 2017-04-10 | 2018-10-11 | Shimano Inc. | Bicycle disc brake caliper assembly |
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US10266226B2 (en) | 2013-06-28 | 2019-04-23 | Shimano Inc. | Disc brake caliper and disc brake caliper assembly |
US9533733B2 (en) | 2013-06-28 | 2017-01-03 | Shimano Inc. | Disc brake caliper and disc brake caliper assembly |
US9227691B2 (en) * | 2013-06-28 | 2016-01-05 | Shimano Inc. | Bicycle brake caliper assembly |
US10427751B2 (en) | 2013-06-28 | 2019-10-01 | Shimano Inc. | Bicycle-brake-caliper attachment structure |
US9908585B2 (en) | 2013-06-28 | 2018-03-06 | Shimano Inc. | Bicycle brake caliper assembly |
US20150001014A1 (en) * | 2013-06-28 | 2015-01-01 | Shimano Inc. | Bicycle brake caliper assembly |
DE102014210196B4 (en) * | 2013-06-28 | 2018-12-20 | Shimano Inc. | Bicycle brake caliper assembly |
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US9828059B2 (en) | 2016-04-12 | 2017-11-28 | Shimano, Inc. | Bicycle disc brake caliper with brake pad spacer |
US20180290707A1 (en) * | 2017-04-10 | 2018-10-11 | Shimano Inc. | Bicycle disc brake caliper assembly |
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US10427750B2 (en) * | 2017-04-10 | 2019-10-01 | Shimano Inc. | Bicycle disc brake caliper assembly |
CN112824696A (en) * | 2019-11-20 | 2021-05-21 | 彦豪金属工业股份有限公司 | Bicycle brake caliper |
Also Published As
Publication number | Publication date |
---|---|
DE102012214135A1 (en) | 2013-02-28 |
CN102951244A (en) | 2013-03-06 |
TW201309537A (en) | 2013-03-01 |
US9551389B2 (en) | 2017-01-24 |
TWI505964B (en) | 2015-11-01 |
DE102012214135B4 (en) | 2018-12-20 |
US20150129373A1 (en) | 2015-05-14 |
CN102951244B (en) | 2016-01-20 |
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