CN1295448C - Mechanical disk-type brake for vehicles - Google Patents

Mechanical disk-type brake for vehicles Download PDF

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Publication number
CN1295448C
CN1295448C CNB021180709A CN02118070A CN1295448C CN 1295448 C CN1295448 C CN 1295448C CN B021180709 A CNB021180709 A CN B021180709A CN 02118070 A CN02118070 A CN 02118070A CN 1295448 C CN1295448 C CN 1295448C
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CN
China
Prior art keywords
output shaft
piston
disc motor
disc
screw part
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 - Lifetime
Application number
CNB021180709A
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Chinese (zh)
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CN1389654A (en
Inventor
玉田圭市
首藤克明
本田喜信
饭尔
金城利树
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
Original Assignee
Honda Motor Co Ltd
Nissin Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd, Nissin Kogyo Co Ltd filed Critical Honda Motor Co Ltd
Publication of CN1389654A publication Critical patent/CN1389654A/en
Application granted granted Critical
Publication of CN1295448C publication Critical patent/CN1295448C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F16D55/224—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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention aims to prevent wear of an output shaft and a screw member, to improve durability, to prevent interference of a braking function due to an offset load acting on the output shaft and the screw member and to reduce drag of a friction pad. A housing hole 46 and a sleeve nut 100 are provided in a disc axial direction on an acting part 41 of a caliper body 40. The piston 80 is housed in the housing hole 46. The screw member 110 is screwed to the sleeve nut 100 and the output shaft 140 is provided between the screw member 110 and the piston 80. A spherical abutting face 145 is provided on a large diameter part 144 of the output shaft 140 and it is abutted on a spherical abutting face 84 of the piston 80. A fastener 170 is attached to a tip of the output shaft 140, and a bottom wall 81 of the piston 80 is elastically held by the fastener 170 and the large diameter part 144.

Description

The mechanical disk-type brake of vehicle
Technical field
The present invention relates to a kind of mechanical disk-type brake that is used to comprise automobile, two-wheeled or motor tricycle, three-wheel or four-wheel dune buggy and golf cart etc.
Background technique
Traditional mechanical disk-type brake that is used for vehicle discloses as described in the flat 1-30662 as Japanese Utility Model, in this disc brake equipment, operation brake rod or brake petal are to be rotatably connected to the input bar of calliper, the rotating force of input bar is converted into the propelling force along disk axis, produces braking action thus.
In this mechanical disk-type brake system, along with the input bar rotation, lobe plate moves towards disc motor, this mobile in, piston and output shaft move towards disc motor, cause the pad of output shaft front end to push the side that part is pressed in friction pads disc motor thus.
Described output shaft is screwed into the concentric screw part of importing bar and lobe plate that supporting, brake clearance has increased under the situation of predetermined amount between the side of the liner on friction pads wearing and tearing and disc motor and friction pads, output shaft moves the disengaging screw part towards disc motor, thereby brake clearance can be set to predetermined value.
In such mechanical disc brake, except for example adopting on the slope the common brake operating that this break stops continuously when vehicle, this disc motor is owing to produce drag torque with the vehicle towed power of leaving behind in the friction pads that disc motor is pressed in wherein.This drag torque is by by being passed to the part that comprises piston and screw part with the contiguous output shaft of this friction pads, causes as a whole those parts towards tilting about the disk sense of rotation of disc shaft thus.This not only harmful brake operating, and can cause connecting the wearing and tearing of the internal thread of output shaft and screw part or outside nut and tear.
Summary of the invention
First purpose of the present invention provides the mechanical disk-type braking device, prevent as much as possible that wherein the drag torque that produces is delivered to output shaft and screw part when braking in friction pads, loss with the screw thread that effectively prevents output shaft and screw part, thereby improve durability, prevent that simultaneously the offset load on output shaft and the screw part from influencing brake operating.
Second purpose of the present invention provides the mechanical disk-type braking device that is used for vehicle, wherein when brake off is operated, by making piston positive retreat to suppress the traction of friction pads.
The invention provides a kind of for motor vehicle mechanical disk-type brake, comprise the body of calibrating that has the agency part that wherein is formed with receiving hole that is arranged on disc motor one side, described receiving hole movably holds the cylindrical body piston that has the bottom surface in the side of described disk electrode along disc shaft, screw part is in the side away from described disk electrode is screwed into the inwall of described receiving hole, be provided with output shaft between described screw part and the piston, wherein said output shaft and described screw part together advance towards described disc motor when the rotation of described input bar, thereby by friction pads being pressed in a side of described disc motor with the described piston of described output shaft adjacency; It is characterized in that: one of the abutment surface of the described output shaft of the cooperation that is adjacent to each other and abutment surface of described piston form hemisphere jut, and another forms bulb-shaped recess.
In above-mentioned for motor vehicle mechanical disk-type brake, be preferably in the described piston diapire and be formed with through hole along the disc shaft direction, form the major diameter part at described piston diapire on respect to the output shaft of the position, distal side of described disc motor, on this major diameter part, be provided with the protruding part that is slightly less than described through-hole diameter, the facing surfaces of described major diameter part and piston diapire forms described abutment surface respectively, described protruding part pass described through hole and on described piston towards described disc motor projection, wherein said protruding part is equipped with elastomeric stopper, thereby described piston diapire is kept by the major diameter part elasticity of described retainer and described output shaft.
According to the disc brake of this formation, can prevent as much as possible that the drag torque that produces from being passed to output shaft and screw part by piston, prevents its inclination towards the disk sense of rotation thus in friction pads.This makes the loss of the attachment portion between output shaft and screw part minimize, and improves their durability simultaneously.Also can prevent to be applied to offset load on output shaft and the screw part to the ill effect of braking action.Because when brake off is operated, the elastomeric stopper generation effect that matches in the screw part end is so that piston is forced to leave disc motor, therefore can be so that the uneven wear of the friction pads liner that is drawn by disc motor minimizes.
Description of drawings
Fig. 1 represents the elevational view, in partial cross-section of the mechanical disk-type brake of embodiment of the present invention;
Fig. 2 represents the sectional view according to an embodiment of the present invention Fig. 1 cut open along the 2-2 line;
Fig. 3 represents the sectional view according to an embodiment of the present invention Fig. 1 cut open along the 3-3 line;
Fig. 4 represents the side cross-sectional view of the mechanical disk-type brake of another embodiment of the present invention.
Embodiment
Below with reference to accompanying drawing one embodiment of the invention are described.
Machinery disc brake 10 comprises calibrates body 40, slidably calibrates body 40 at the disk axial direction and is supported on the support 20 that is installed on the car body by a pair of slidable pin 30.
Calibrate body 40 and comprise agency part 41, reaction part 42 and bridging portion 43.Agency part 41 is arranged on the side of disc motor 50, and reaction part 42 is arranged on the opposite side of this disc motor 50, bridging portion 43 interconnect function parts 41 and reaction part 42, be connected across simultaneously disc motor 50 around.Between agency part 41 and reaction part 42, a pair of friction pads 60 is hung by hanger pin 70, thereby disc motor 50 is sandwiched between the friction pads 60 and can moves along disc shaft.
Support arm 44,44 extends from the both sides of agency part 41, and this support arm 44,44 stretches out along the direction away from disk from support 20, has the slidable pin 30,30 that passes wherein.One of support arm 44,44 has from the outward extending keeping arm 45 of its radial direction, and as described below, keeping arm 45 is used to make brake cable 150 to pass therethrough.
Agency part 41 has the receiving hole 46 that forms on the side of disc motor 50.Receiving hole 46 holds can be along the piston 80 of disk axis slip.This piston 80 forms with the cylindrical shape in the end that has that has thick diapire 81.Through hole 82 forms on the central shaft of diapire 81.Diapire 81 has at the bulb-shaped recess abutment surface 83 around through hole 83 in the face of forming on the side of disc motor 50.
Agency part 41 is provided with piston engaging means 90 on the side away from disc motor 50, be used to start piston 80.Piston engaging means 90 comprises sleeve nut 100, screw part 110, input bar 130 and output shaft 140.Sleeve nut 100 is cast into to be welded in calibrates body 40.Screw part 110 is screwed in the sleeve nut 100 from the side away from disc motor 50.The input bar 130 nut 120 overall fixed front end outside screw part 110 that is locked.Output shaft 140 is screwed into screw part 110, and matches with piston 80, thereby piston 80 can be pushed to disc motor 50.
The threaded bush 100 coaxial with receiving hole 46 is formed with a plurality of internal threads 101 on the side within it.Screw part 110 is the cylindrical bodys that are formed with a plurality of outside threads and are formed with a plurality of internal threads 112 on disc motor outer surface side on the inboard away from disc motor 50.Screw part 110 its ends away from disc motor are the projections that are higher than threaded bush 100, and its outside thread 111 is screwed into threaded bush 100 internal thread 101, thereby its disc motor side is kept by sleeve nut 100.Because the multiple thread with big lead angle is adopted in screwing togather between the outside thread 111 of threaded bush 110 internal thread 101 and screw part 110, so screw part 110 can greatly advance because of the 130 a spot of rotations of input bar.
The front end of input bar 130 is connected with the end that brake cable 150 passes keeping arm 45.Near the other end of brake cable 150 brake petal or the bar (not shown) with being positioned at driver's seat is connected.Between input bar 130 and keeping arm 45, an end outside mask of brake cable 150 Returnning spring 160 front ends of compression assembling, and under inactive situation, input bar 130, screw part 110 and output shaft 140 are biased in the solid line position shown in Fig. 1-3.
Output shaft 140 comprise have the shaft portion 141 that extends through piston 80 and threaded bush 100 than minor diameter, away from a side of disc motor projection and the large diameter outside thread 142 that is connected with shaft portion 141 on threaded bush 100.Outside thread 142 has at its outboard end button 143 integrally formed with it.
The shaft portion 141 of output shaft 140 forms flange-shape major diameter part 144 at its about core.Major diameter part 144 has the spherical abutment surface 145 that expands in the one side of disc motor side.The major diameter part 144 of shaft portion 141 forms the diameter of the through hole 82 that is slightly less than piston 80 at its front end 146.The fore-end 146 of output shaft 140 its axial regions 141 is by through hole 82, abutment surface 83 adjacency of abutment surface 145 and piston 80, and on the diapire 81 of piston 80 towards disc motor 50 projections.The front end of projection fore-end 146 matches with the retainer 170 that adopts wave washer simultaneously.Therefore diapire 81 elasticity of piston 80 remain between retainer 170 and the major diameter part 144, connect piston 80 and output shaft 140 along the axial straight line of disk thus.
Therefore like this piston 80 that connects or output shaft 140 can be because of spherical abutment surface 83 and 145 and the elastic force that provides of retainer 170 and independently lateral tilt.When contact brake operating and output shaft 140 moved away disc motor 50, piston 80 also was forced to retract.
Half is screwed into the pact of the disc motor side of the outside thread 142 of output shaft 140 in the internal thread 112 of screw part 110, on screw part 110 towards away from the outside thread 142 of the direction projection of disc motor remaining half be screwed in the above-mentioned locking nut 120, therefore with screw part 110, input bar 130 and output shaft 140 whole lockings.The result when brake cable 150 be braked operation when spurring, input bar 130, screw part 110 and output shaft 140 together rotate, and advance towards disc motor because of the screw-thread fit between outside thread 111 and the internal thread 101, promoted the piston 80 of output shaft 140 ends like this.
Locking nut 120 also is used to adjust the tension force of brake cable 150 and weares and teares according to the liner of friction pads 60 adjusts brake clearance.For example when the tension force of brake cable 150 is adjusted, locking nut 120 is loosened earlier, take-off lever 130 is moved in any direction along its rotate path as fulcrum by employing screw part 110, and the tension force of brake cable 150 is adjusted, and locking nut 120 is tightened again then.Making brake clearance between the liner of the side of disc motor 50 and friction pads 60 improve a certain amount of the time owing to repeating brake operating, locking nut 120 is similarly loosened once, push output shaft 140 to disc motor 50 by control button 143 then, to promote the friction pads 60 and the suitable setting brake clearance at output shaft 140 terminal pistons 80 places.Tighten locking nut 120 at last again.
Therefore in above-mentioned embodiment, along with brake cable 150 is drawn by driver's brake operating, the solid line position that 130 rotations of input bar are left among Fig. 1 arrives dotted line position.Screw part 110, output shaft 140 and input bar together rotate simultaneously, move towards disc motor 50.This causes output shaft 140 its pistons 80 to be pushed to disc motor, is crushed on until the friction pads 60 in the agency part side on the side of disc motor 50.
This has caused counter braking force, and it will be calibrated body 40 and advance towards agency part by sliding pin 30,30 guiding the time, and reaction part 42 is pressed in the opposite side of disc motor 50 with the friction pads 60 of reaction part side, carries out brake operating thus.
When brake off was operated, single parts were disengaged until the pressure that imposes on friction pads 60,60 according to the sequential operation opposite with brake operating.Specifically, in agency part 41 sides, screw part 110, output shaft 140 and input bar 130 together move away disc motor 50.To be forced to return to leave disc motor 50 by the piston 80 that retainer 170 is locked then.As a result, disc motor 50 begins rotation, produce lateral force between the both sides of disc motor 50 and the friction pads 60,60 relative with it, thereby two friction padss moves away disc motor 50.Therefore can prevent the uneven wear of the liner of two friction padss as far as possible.
Except aforesaid common brake operating, under the situation that vehicle stops on the slope continuously, in the left behind direction on slope of vehicle, the disc motor 50 that acts on the friction pads 60,60 produces drag torques.Simultaneously, drag torque act on the adjacent piston 80 of the friction pads 60 of agency part side on, therefore make piston 80 tilt with respect to disc shaft along the direction of disk rotation, in abutting connection with output shaft 140 and by retainer 170 elastic lockings, piston 80 pushes and is out of shape retainer 170 and makes its abutment surface 80 slide on the abutment surface 145 of output shaft 140 piston 80 simultaneously by means of abutment surface 83 and 145.
Therefore the drag torque that acts on the friction pads 60 only makes piston 80 tilt, and the posture of output shaft 140 and screw part 110 keeps along disc shaft simultaneously.Therefore, that just avoids applies too much load, has also just avoided internal thread 112 and outside thread 142 and the coupling sleeve nut 100 and the multiple-internal screw thread of screw part 110 and the wearing and tearing of outside thread 101 and 111 of connecting screw parts 110 with output shaft 140.Therefore the durability of threaded bush 100, screw part 110 and output shaft 140 just can be enhanced.In addition, just can avoid the interference of contingent and brake operating when offset load is applied on output shaft 140 or the screw part 110.
Below, with reference to figure 4 another preferred embodiment of the present invention is described, wherein omitted to with Fig. 1-3 in the similar or same element represented of same reference character or the explanation of part.
In this embodiment, the part that output shaft 140 extends to its front end among Fig. 1-3 from major diameter part 144 is cut, and has omitted the retainer 170 at the axle front end.
Specifically, can move axially the piston 200 that is contained in the receiving hole 46 along disc shaft is formed by cylindrical body and the diapire 201 of being with the bottom surface.Diapire 201 is formed with bulb-shaped recess abutment surface 202 on its side away from disc motor.The output shaft 210 that is used for piston 200 is pushed to disc motor 50 comprises the shaft portion 211 that extends to piston 200 from threaded bush 100, and extends from threaded bush 100 and to leave that disc motor 50 is outstanding to be provided with and major diameter outside thread 212 that it forms continuously.Outside thread 212 is formed with button 213 at its far-end.Shaft portion 211 is formed with flange-shape major diameter part 214 at its front end.Major diameter part 214 is provided with the spherical abutment surface 215 that expands on a side of disc motor 50.Therefore make piston 200 and output shaft 210 only match with output shaft 210 by means of the adjacency between the abutment surface 215 of the abutment surface 202 of piston 200 and output shaft 210.
Therefore in the present embodiment, act on drag torque on the friction pads 60 to making piston 200 tilt, make output shaft 210 and screw part 110 be kept simultaneously with respect to the axial posture of disk, therefore just avoid the internal thread 112 of screw part 110 and the outside thread 142 of output shaft 210, or the outside thread 111 of threaded bush 100 internal thread 101 and screw part 110 is applied in too much load and wearing and tearing.
In the embodiment of Fig. 4, the sphere that the abutment surface of output shaft can be whittled into its diameter of axle by the end face with it forms.
In addition, the spherical abutment surface of piston and output shaft can be opposite with above-mentioned embodiment.The abutment surface that is piston can form convex shaped, and the abutment surface of output shaft is formed depression shape.Perhaps, two spherical abutment surface can form convex shaped.The retainer that is assemblied in the output shaft front end can not only comprise the as above described wave washer of embodiment, can also comprise the elastic material of spring washer or other type, for example flexibility or rigidity resin and rubber.
In the above-described embodiment, be provided with the threaded bush that receiving hole is used to hold piston continuously and constitute part receiving hole of the present invention.Therefore the threaded bush in the above-mentioned embodiment can be omitted, and the screw part that can be arranged on the receiving hole inboard can directly be screwed into receiving hole.And receiving hole (or threaded bush) needn't adopt multiple thread and be screwed in the screw part.

Claims (2)

1. for motor vehicle mechanical disk-type brake, comprise the body of calibrating that has the agency part that wherein is formed with receiving hole that is arranged on disc motor one side, described receiving hole movably holds the cylindrical body piston that has the bottom surface in the side of described disk electrode along disc shaft, screw part is in the side away from described disk electrode is screwed into the inwall of described receiving hole, be provided with output shaft between described screw part and the piston, wherein said output shaft and described screw part together advance towards described disc motor when the rotation of described input bar, thereby by friction pads being pressed in a side of described disc motor with the described piston of described output shaft adjacency; It is characterized in that: one of the abutment surface of the described output shaft of the cooperation that is adjacent to each other and abutment surface of described piston form hemisphere jut, and another forms bulb-shaped recess.
2. for motor vehicle mechanical disk-type brake as claimed in claim 1, it is characterized in that, in described piston diapire, be formed with through hole along the disc shaft direction, form the major diameter part at described piston diapire on respect to the output shaft of the position, distal side of described disc motor, on this major diameter part, be provided with the protruding part that is slightly less than described through-hole diameter, the facing surfaces of described major diameter part and piston diapire forms described abutment surface respectively, described protruding part pass described through hole and on described piston towards described disc motor projection, wherein said protruding part is equipped with elastomeric stopper, thereby described piston diapire is kept by the major diameter part elasticity of described retainer and described output shaft.
CNB021180709A 2001-01-12 2002-01-12 Mechanical disk-type brake for vehicles Expired - Lifetime CN1295448C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001004649A JP2002206576A (en) 2001-01-12 2001-01-12 Disc brake for mechanical vehicle
JP4649/01 2001-01-12

Publications (2)

Publication Number Publication Date
CN1389654A CN1389654A (en) 2003-01-08
CN1295448C true CN1295448C (en) 2007-01-17

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CNB021180709A Expired - Lifetime CN1295448C (en) 2001-01-12 2002-01-12 Mechanical disk-type brake for vehicles

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JP (1) JP2002206576A (en)
CN (1) CN1295448C (en)
ES (1) ES2228198B2 (en)
IT (1) ITMI20020009A1 (en)
TW (1) TW505749B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103047327A (en) * 2011-10-17 2013-04-17 日信工业株式会社 Mechanical arresting disk brake

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
DE20314822U1 (en) * 2003-09-23 2005-02-03 Hanning & Kahl Gmbh & Co. Kg Azimuth brake for wind turbines
CN100445590C (en) * 2005-08-26 2008-12-24 日信工业株式会社 Disk brake apparatus
KR100845901B1 (en) 2007-03-23 2008-07-14 주식회사 만도 A brake device of a disk brake
JP4769309B2 (en) * 2009-02-03 2011-09-07 日信工業株式会社 Disc brake device for vehicle
JP5587876B2 (en) * 2009-05-27 2014-09-10 日信工業株式会社 Caliper body support structure for vehicle disc brakes
DE102010008927B4 (en) * 2010-02-23 2019-10-24 Lucas Automotive Gmbh Vehicle brake with spindle / nut arrangement
JP5368528B2 (en) 2011-10-17 2013-12-18 日信工業株式会社 Mechanical disc brake for stationary
TWI404643B (en) * 2012-02-17 2013-08-11 Hui Juan Chen Fixer and brake disc including the same
JP2014190413A (en) * 2013-03-27 2014-10-06 Nissin Kogyo Co Ltd Mechanical disc brake

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Publication number Priority date Publication date Assignee Title
CN103047327A (en) * 2011-10-17 2013-04-17 日信工业株式会社 Mechanical arresting disk brake
CN103047327B (en) * 2011-10-17 2015-06-17 日信工业株式会社 Mechanical arresting disk brake

Also Published As

Publication number Publication date
ES2228198A1 (en) 2005-04-01
ITMI20020009A0 (en) 2002-01-08
ES2228198B2 (en) 2006-11-16
CN1389654A (en) 2003-01-08
TW505749B (en) 2002-10-11
JP2002206576A (en) 2002-07-26
ITMI20020009A1 (en) 2003-07-08

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