CN101387324A - Pressing and actuating mechanism of disc brake device - Google Patents
Pressing and actuating mechanism of disc brake device Download PDFInfo
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- CN101387324A CN101387324A CNA2008102155868A CN200810215586A CN101387324A CN 101387324 A CN101387324 A CN 101387324A CN A2008102155868 A CNA2008102155868 A CN A2008102155868A CN 200810215586 A CN200810215586 A CN 200810215586A CN 101387324 A CN101387324 A CN 101387324A
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- cushion block
- brake
- block support
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Abstract
A disc brake device is provided with a wedge rod (20) axially moved by an actuator (4) and orthogonally arranged to a wheel axle, a wedge (5) mounted on the wedge rod (20) and having an inclined surface, a main roller (6) rolling on the inclined surface, and a link (12) rocking in accordance with a movement of the main roller (6). An intermediate portion of the link (12) and a base end of the brake arm (3) are coupled via a gap adjusting mechanism (14). The base end of the brake arm (3) is boosted, pressed, and expanded in accordance with the movement of the main roller (6), and a brake pad disposed at a rocking end of the brake arm (3) is pressed and actuated. A pair of sub-rollers capable of rolling on guide rails are disposed coaxially with the main roller (6) on both sides of the main roller (6).
Description
Technical field
The present invention relates to a kind of pressing and actuating mechanism of Disk brake apparatus.
Background technique
In the Disk brake apparatus that uses in the vehicle, particularly in the disk type braker that rail truck is used, the spring that is equipped with on the spring of break and disc rotor is installed relatively moving greatly down, so structure that need be able to adapt therewith, usually be known that utilization can easily adapt to the lever-type break of the binding of the big connecting rod that relatively moves (for example, with reference to patent documentation 1)
Patent documentation 1: TOHKEMY 2006-315422
As conventional example 1, use Figure 14 (A)~14 (D) that patent documentation 1 disclosed disc brake device for railway vehicles is described.The Disk brake apparatus 401 of conventional example 1 possesses two claw beams 406,406 and actuator 414, installation when wherein two claw beams 406,406 are separately installed with cramping dish D the brake head 407,407 of brake slipper, actuator 414 have can forward direction or direction of retreat in the movable rod 415 that drives of at least one side.In addition, this Disk brake apparatus 401 possesses pivot and ties in the rotation of movable rod 415 and transmit arm 416 and be fastened on the telescopic shaft 410 of this rotations transmission arm 416.The rotation of the turnover by following actuator 414 is transmitted the release of arm 416 and is rotated, and utilizes bolt arrangement that the body of bolt 413 is released laterally.Consequently claw beam 406,406 is center swing with rest pin 405, brake head 407,407 cramping dish D and carry out braking maneuver.During brake pads wear, by rotating the superfluous stroke that transmits arm 416, the end of the notch of lobe plate 419 is contacted with the gap adjustment rod 421 that is fixed on the matrix, and turbine 417 rotates.This result is that gap adjustment gear 418 rotates and carries out automatic backlash and regulate.
By these formations, in the above-mentioned conventional example 1, the turnover of movable rod 415 action is transmitted the extension action that arm 416 is transformed to telescopic shaft 410 by rotating.In addition, the turnover of movable rod 415 action increases its strength and transmits to claw beam 406,406.And the rotation transmission arm 416 that constitutes the reinforcement mapped structure is provided with the gap adjusting mechanism of being made up of lobe plate 419, notch, turbine 417, gap adjustment gear 418 etc.Therefore, can provide the compact structure of the high performance Disk brake apparatus 401 in the gap of adjustment disk D and brake slipper automatically.But usually, in pneumatic brake, air pressure is below 700~900kPa usually, so in order to obtain being fit to the big braking force of rail truck, need take the sectional area of air chamber is increased, or adopt and will brake the connecting rod of arm than countermeasures such as increases.Therefore, braking device itself still can maximize, and the space that needs also enlarges, can't be with the chassis compact design.
In addition, in the patent documentation 1, shown in the embodiment of Figure 14 (D), also disclose and used the example of the inclination cam structure of simple structure as the so-called wedge-shaped structure of use of force multiplication system.But, at rail truck with under the situation of break, the movement of swinging for the wheel of representing to be arranged at vehicle base has omnibearing degrees of freedom, braking device is the also displacement continually of movement that brake arm is followed vehicle.Therefore, in the example of Figure 14 (D), the claw beam 406,406 that is equivalent to brake arm during braking also is subjected to coiling the influence of displacement of D and displacement continually from wheel.These displacements produce the power that prizes that makes rod unit 429 swings, or directly transmit to the voussoir 431 that constitutes force multiplication system by this rod unit 429.By these displacement power, give voussoir 431 and movable rod 415 probably, even actuator 414 brings harmful effect.In addition, be used to steering force, on rod unit 429, produce the setback force of big swaying direction, and force to give the very big burden of shell of utilizing some steady arm parts 429 by voussoir 431 from actuator 414.
In addition, especially in the disk type braker that rail truck is used, as being used to adapt on the spring that break is installed and the structure that relatively moves under the spring of disc rotor being installed, what generally know is the lever-type break (for example, with reference to following patent documentation 2) that utilizes the binding of connecting rod.In the caliper brake that rail truck is used, the brake slipper that utilizes hydraulic piston etc. to be held in brake calipers is produced braking force by the side that is pressed in disc rotor, by cutting off the hydraulic pressure of hydraulic piston, utilize the effect of return spring that brake slipper is retreated and become non-braking state.But when brake slipper wore and tore owing to long use, it is big that the gap of brake slipper and disc rotor becomes.Therefore, possesses automatic backlash controlling mechanism (for example with reference to following patent documentation 3, in addition, the break of above-mentioned following note patent documentation 2 also has the automatic backlash controlling mechanism) in this caliper brake.
Patent documentation 2: the flat 10-505038 of Japanese Unexamined Patent Application Publication
Patent documentation 3: TOHKEMY 2001-124119
As conventional example 2, the brake calipers assembly of the disk type braker that disclosed rail truck is used in the expression patent documentation 2 among Figure 15.The brake calipers assembly of conventional example 2 has almost parallel and arranges two claw beams 101,102 that extend.These claw beams 101,102, be used for being engaged with the brake slipper 103,104 that can press solidly on brake disc (disc rotor) 105 on the end of fastening disk type braker.Another end of two caliper brakes and central field interconnect or are connected in rotationally shell 108.Braking force generator and controlling device 106 are installed in the connection set.Have at least a conduct to form among the place that connects by braking force generator exercisable eccentric body transmission device 111 on fastening direction.Another connects the place and forms as rotary bearing 122.And the controlling device 106 of together installing with braking force generator in the above-mentioned connection set utilizes the regulating action of crossing the operation equipment 107 that stroke rotates of piston rod 118 that the wearing and tearing by brake slipper 103,104 produce to prolong adjusting.
In addition, as conventional example 3, expression patent documentation 3 disclosed caliper brake devices among Figure 16 (A) and Figure 16 (B).The caliper brake device of conventional example 3 has piston 250 can insert cylinder 212 in the main body 210 with being free to slide.Be fixed in bar 220 support limit stops 226 in the cylinder 212.The peripheral part of this block 226 is provided with the return spring 230 of piston 250.In series be arranged at the friction spring 240 of this return spring 230, shown in Figure 16 (B), its outer circumferential face 244 friction applies are in the inner peripheral surface 252 of piston 250.Friction spring 240 when the stroke of piston 250 is excessive, can be at once and piston 250 between slide and the interval when regulating non-braking automatically.
By these formations, in the braking device of the disclosed conventional example 2 of above-mentioned Figure 15, by employing used improvement by braking force generator exercisable eccentric body transmission device 111 on fastening direction the brake calipers assembly, requisite space is little and weight is little compact structure and high pass ratio can be realized, simple structure can be realized simultaneously.In addition, during brake slipper 103,104 wearing and tearing, controlling device 106 prolongs adjusting by the regulating action of operation equipment 107, and the action of suitably revising when braking postpones.In addition, among above-mentioned Figure 16 (A) and 16 (B) in the braking device of disclosed conventional example 3, even brake pads wear, when friction spring of gap adjustment being used by effective utilization 240 and non-braking piston 250 is retracted the small-sized gap adjusting mechanism in space of return spring 230 arranged in series of the inside of cylinder 212, the brake slipper in the time of also can always suitably keeping non-braking the and the interval of disc rotor, and the action that can not produce when braking postpones.
But, even the braking device of above-mentioned conventional example 2 is lever-type caliper brake devices, also not necessarily can adopt any method that only relies on controlling device 106 in braking force generator is installed into connection set, to adapt to follow with the increase of the pendulum angle of the wearing and tearing of the brake slipper of disc rotor sliding contact, brake arm.Therefore, though can freely shaking the head to prop up rotationally, the cushion block support is held in brake arm, but, because when cushion block supports such as Vehicular vibration rotate, cushion block contacts with disc rotor and produces traction phenomena, in addition, the braking device of above-mentioned conventional example 3 only utilizes the automatic backlash of piston 250, return spring 230 and friction spring 240 etc. in the brake calipers main body 210 of a type to regulate, and is not the braking device about the lever-type force-doubling type caliper brake device as the brake arm.Therefore, can not produce the bad problem of the sliding contact surface of the brake slipper of increase of the brake arm pendulum angle that takes place when following brake pads wear and disc rotor.
Summary of the invention
The object of the present invention is to provide a kind of braking device that possesses three roller wedge mechanisms, it is used to the pressing force from actuator, keep the setback force that produces on the force multiplication system reliably via voussoir, even simultaneously brake arm can not bring harmful effect to the wedge portions that constitutes force multiplication system outward because thereby displacement continually yet.
In addition, the object of the present invention is to provide a kind of braking device, it is to possess the Disk brake apparatus that obtains the lever-type brake arm of force multiplication system by simple structure, the cushion block support of the band regulatory function of the traction phenomena when wherein, possessing action delay when continuing the mode that brake slipper and disc rotor remain on suitable angle prevented to brake and Vehicular vibration.
Embodiment according to the present invention more than one, Disk brake apparatus possess by actuator shaft moving and with wheel axle with the voussoir bar of quadrature shape configuration, be installed on this bar and have subtend the plane of inclination voussoir and according to the pair of links of swinging that moves of a pair of home roll that on these plane of inclination, rotates.The intermediate portion of connecting rod is connected via gap adjusting mechanism with the base end part of brake arm.According to moving of home roll, the base end part of brake arm is pushed expansion by times power, the brake slipper that is equipped on the swing end of the brake arm action that is pressed.On the both sides of described home roll, a pair of secondary roller that rotates on the guide rail and described home roll be equipped on coaxial on.
In addition, also can be, the base end part axle of described pair of links be supported on the two end part of pillar, constitutes trapezoidal type four side rods by described voussoir, home roll, connecting rod and pillar.
In addition, also can be that the two end part of described gap adjusting mechanism are connected via the base end part of spherical bearing with connecting rod and brake arm.
In addition, also can be the R stepped part that moves on the axle direction that forms the secondary roller of restriction on the slideway that described a pair of secondary roller rotates.
In addition, also can be that the plane of inclination of described voussoir forms with at least two different face angles.
In addition, also can be described gap adjusting mechanism to be made the automatic backlash controlling mechanism of the mode of the expansion of the interval between the base end part of described connecting rod and brake arm being regulated with by the superfluous stroke of described home roll.
In addition, also can be on the axle support at the two end part of the base end part of described pair of links and pillar, to set the two torsion springs that described trapezoidal type four side rods returned to original shape.
Embodiment according to the present invention more than one, with utilize actuator shaft moving and with the voussoir bar of wheel axle with the configuration of quadrature shape, be installed on this bar and have the voussoir of opposing inclined face, the pair of links of swinging that moves according to a pair of home roll that on these plane of inclination, rotates, the intermediate portion of these connecting rods and the base end part of brake arm link by gap adjusting mechanism, according to moving of home roll, the base end part times power of brake arm is pushed expansion, and make be equipped on its swing end the brake slipper push action, in such Disk brake apparatus, on coaxial, be provided in a pair of secondary roller that rotates on the guide rail by both sides at described home roll, utilize the cam structure of voussoir composition and the dual force multiplication system of the lever construction that connecting rod is formed, can be with the brake structure miniaturization, and, by pressing force from actuator, can be with the setback force of utilizing voussoir to produce at force multiplication system, be equipped on coaxial a pair of secondary roller by both sides at home roll, marry again reliably and be distributed on the guide rail, each parts self that constitute force multiplication system can not be subjected to bearing loading and the harmful effect of distortion etc., the slip resistance of force multiplication system is also few, can improve a times force efficiency.And, going up in the opposite direction by the side that launches at home roll and rotate, the rotation difference that secondary roller rotates on guide rail can realize sliding less and rolling resistance accounts for major part, in addition the few force multiplication system of slip resistance.
In addition, at the two end part that the base end part axle of described pair of links are supported on pillar, and constitute by described voussoir, home roll, connecting rod and pillar under the situation of trapezoidal four side rods, even brake arm is because by outer thereby frequent displacements such as impacts, the connecting rod that also can utilize pillar to be supported on this pillar with axle is swung and is absorbed, the power that also can suppress the external cause generation feeds through to voussoir and home roll, so can prevent to bring harmful effect to the wedge portions that constitutes force multiplication system.In addition,, can absorb the omnibearing displacement between brake arm and the connecting rod and make suitable correspondence via under spherical bearing and the situation that the base end part of connecting rod and brake arm is connected at the two end part of described gap adjusting mechanism by gap adjusting mechanism.
In addition, under the situation of the axial mobile R stepped part that forms the secondary roller of restriction on the slideway that described a pair of secondary roller rotates, not only can prevent coming off of secondary roller self, and crawling of the secondary roller when effectively restriction constitutes the connecting rod swing of force multiplication system is moving, promotes the swing of slick and sly connecting rod and does not reduce times force efficiency of force multiplication system.And, can prevent inclined to one side loading to home roll.In addition, the plane of inclination of described voussoir is with at least two out-of-plane angle and under the formation situation, fill rapidly by little wedge shape Duo in the cushion block gap at braking initial stage, simultaneously also can obtain high times force rate rate, thereby can realize that meeting with a response property is good and obtain the arrestment mechanism of reliable times of power according to mode in the later half reliable braking force that obtains of braking.
In addition, described gap adjusting mechanism is made under the situation of superfluous stroke adjustment for automatic backlash controlling mechanism that the interval between the base end part of described connecting rod and brake arm is enlarged by described home roll, make home roll that superfluous stroke take place by wearing and tearing owing to brake slipper, can suitably regulate the interval between the base end part of connecting rod and brake arm automatically, even the therefore brake pads wear superfluous stroke that also can suppress to regulate the superfluous swing of brake arm automatically and then suppress adjusting wedge.Also have in addition, axle support at the two end part of the base end part of described a pair of connecting rod and pillar sets under the situation of the two torsion springs that described trapezoidal type four side rods reverted to original shape, even brake arm respectively is freed from outer thereby frequent displacements such as the asymmetrical impacts in the left and right sides, also trapezoidal type four side rods easily can be reverted to original shape, as its result, can suitably produce (equalization) with about the cushion block gap.
In addition, embodiment according to the present invention more than one, to expansion is pushed in the upper end portion of a pair of brake arm, and make and be installed on the brake slipper that axle is fixed on the cushion block support of these underparts and carry out in the Disk brake apparatus of push action, be installed on described cushion block support brake slipper wearing and tearing and when stroke took place, no matter the posture of described brake arm how, all will keep the adjusting correction mechanism of brake slipper and disc rotor abreast and be located between brake arm and the cushion block support.
In addition, also can be that described adjusting correction mechanism is equipped on the inside of brake arm on top of the axle support of described cushion block support.
In addition, also can be that described adjusting correction mechanism is equipped on the inside of cushion block support on top of the axle support of described cushion block support.
In addition, also can be, described adjusting correction mechanism is made of the either party's who is held in described brake arm and cushion block support friction lever and the friction spring that is held in the opposing party, and being embedded in relatively moving between the friction spring of described friction lever by described friction lever and crimping, the mode of brake slipper and disc rotor of keeping is abreast regulated.
In addition, also can be that described adjusting correction mechanism is by the linkage component on the top of top that links housing and cushion block support, or the linkage component of the bottom of binding lower part of frame and cushion block support constitutes.
In addition, also can be on described linkage component, to form spring portion.
In addition, also can be that described adjusting correction mechanism is equipped on the cushion block internal stent of the axle support of described cushion block support.
In addition, also can be that described adjusting correction mechanism is equipped on the brake arm inside of the axle support of described cushion block support.
In addition, also can be, described adjusting correction mechanism is made of spring and the centralizer in the axle support that is equipped on described cushion block support, and regulate: in brake pads wear in following mode, when producing the rotation angle more than the specified value on the cushion block support, utilize the resiliently deformable power in addition of spring, centralizer rotates, the relative angle displacement with respect to brake arm of cushion block support, and keep brake slipper and disc rotor abreast.
Embodiment according to the present invention more than one, the upper end portion of a pair of brake arm is launched to push, and make and be installed on axle and be fixed in the Disk brake apparatus of brake slipper push action of cushion block support of its underpart, be installed on the brake pads wear of described cushion block support and when stroke took place, no matter the posture of described brake arm how, all will keep the adjusting correction mechanism of brake slipper and disc rotor abreast is located between brake arm and the cushion block support, thus, even brake pads wear, brake arm is excessively swung, and disc rotor between can't keep parallel interval, also can utilize the adjusting correction mechanism that cushion block support and disc rotor are suitably revised abreast, so, can prevent that the eccentric wear of brake slipper from undermining towing.
In addition, be equipped at described adjusting correction mechanism under the situation of inside of brake arm on top of axle support of described cushion block support, set the adjusting correction mechanism of more complicated in a side of thicker brake arm, the cushion block bracket side also can only set anchor etc., and can realize the simplification and the lightweight of cushion block support.In addition, be equipped at described adjusting correction mechanism under the situation of inside of cushion block support on top of axle support of described cushion block support, separately be arranged at the brake arm side by a part with the adjusting correction mechanism of return spring etc., can be evenly and the cushion block support between constitute and regulate correction mechanism, so the brake arm side also can be simplified a little.And, because regulating correction mechanism, these are equipped on the inside of brake arm or cushion block support, so can not be vulnerable to the influence of slungshot or heavy snow.
In addition, described adjusting correction mechanism is made up of the either party's who is held in described brake arm and cushion block support friction lever and the friction spring that is held in the opposing party, with relatively moving between the friction spring that is embedded in described friction lever by crimping, keep abreast under the situation that brake slipper and disc rotor mode regulate, regulate correction mechanism and can between the friction lever of simple structure and friction spring, constitute the vibration of cushion block support in the time of in addition also can effectively suppressing Vehicular vibration.In addition, described adjusting correction mechanism is by the linkage component on the top of top that links housing and cushion block support, or under the situation of the linkage component of the bottom of binding lower part of frame and cushion block support formation, by adopting simpler linkage component, according to the excessive brake arm of swing when the brake pads wear, the cushion block support is also suitably followed, thus can keep with disc rotor between parallel.In addition, forming on the described linkage component under the situation of spring portion, wearing and tearing with respect to liner, the mode of wearing and tearing equably according to liner, cushion pad can be followed, and can prevent that eccentric wear from decreasing, with respect to the axial torsional vibration of the disc rotor of wedge slides contact etc., the distortion of cushion block support can absorb by spring portion, thereby can prevent that towing and eccentric wear from decreasing.
In addition, described adjusting correction mechanism is equipped under the situation of cushion block internal stent of axle support of described cushion block support, can the axle support that correction mechanism is equipped on the cushion block support will be regulated, therefore, friction lever etc. are not exposed to the outside, so be not vulnerable to the influence of slungshot and heavy snow, become the also relatively good and simpler structure of outward appearance, on this basis, the brake arm side can not set any adjusting correction mechanism, so that the structure of brake arm side can become is simple.Also have in addition, described adjusting correction mechanism is equipped under the situation of inside of brake arm of axle support of described cushion block support, as hereinbefore, friction levers etc. are not exposed to the outside, so be not vulnerable to the influence of slungshot and heavy snow, become the yet relatively good and simpler structure of outward appearance, on this basis, well-to-do brake arm side sets the adjusting correction mechanism of more complicated in the configuration of components design, thereby can realize the simplification and the lightweight of cushion block bracket side.
In addition, described adjusting correction mechanism is made of spring and the centralizer in the axle support that is equipped on described cushion block support, brake pads wear, when producing the rotation angle more than the specified value on the cushion block support, with resiliently deformable power in addition by spring, centralizer rotates, the relative angle displacement with respect to brake arm of cushion block support, and under the mode of keeping brake slipper and the disc rotor abreast situation of regulating, follow the degree that relatively rotates angle of brake arm and cushion block support, with resiliently deformable power in addition by spring, centralizer rotates and regulates correction, regulate correction and carry out with the i.e. action of the sense of rotation of axle support of central part of the action of cushion block support, therefore, the action of regulating when revising becomes smooth.
Other feature and effect can be understood by embodiment's the record and the claim of interpolation.
Description of drawings
Fig. 1 (A) and Fig. 1 (B) are the figure of expression first embodiment's braking device, and Fig. 1 (A) is the major component flat sectional drawing, and Fig. 1 (B) is the B-B sectional drawing of Fig. 1 (A).
Fig. 2 is the whole profile of first embodiment's braking device.
Fig. 3 force multiplication system that to be expression be made up of three roller wedge mechanisms and trapezoidal type four side rod mechanisms and the related major component planimetric map of brake arm.
Fig. 4 (A) is the C-C sectional drawing of Fig. 3, and Fig. 4 (B) is the stereogram of the force multiplication system be made up of three roller wedge mechanisms and trapezoidal type four side rod mechanisms of expression.
Fig. 5 is the exploded perspective view of three roller wedge mechanisms and trapezoidal type four side rod mechanisms.
Fig. 6 is the exploded perspective view of guide rail and connecting rod assembly parts.
Fig. 7 (A) is the stereogram of connecting rod, and Fig. 7 (B) is the stereogram of adjustable lever.
Fig. 8 (A) is that the braking initial stage effect of brake slipper new product has the flat sectional drawing from the crash situation of the impact of brake slipper, and effect has the flat sectional drawing from the crash situation of the impact of brake slipper during the full application of brake of Fig. 8 (B) when being brake pads wear.
Second embodiment of Fig. 9 (A) and Fig. 9 (B) expression braking device of the present invention, Fig. 9 (A) are the whole sectional drawings of braking device, and Fig. 9 (B) is the major component sectional drawing.
The 3rd embodiment of Figure 10 (A)~Figure 10 (C) expression braking device of the present invention, Figure 10 (A) is the whole sectional drawing of braking device, Figure 10 (B) and Figure 10 (C) they are the major component sectional drawings.
The 4th embodiment of Figure 11 (A) and Figure 11 (B) expression braking device of the present invention, Figure 11 (A) is the whole sectional drawing that has set the braking device of linkage component, Figure 11 (B) is the major component action diagram.
Figure 12 (A)~Figure 12 (D) expression has possessed the 5th embodiment's the explanatory drawing of braking device of the present invention of the cushion block support of the band regulatory function of the present invention with the linkage component that forms spring portion.
Figure 13 (A)~Figure 13 (D) expression possesses the 6th embodiment of braking device of the present invention of the cushion block support of band regulatory function, is the explanatory drawings such as major component sectional drawing that will regulate in the axle support that correction mechanism is equipped on the cushion block support.
Figure 14 is the explanatory drawing of the disc brake device for railway vehicles of expression conventional example 1.
Figure 15 is the explanatory drawing of the brake calipers assembly of expression conventional example 2.
Figure 16 (A) and Figure 16 (B) are the explanatory drawings of the caliper brake device of expression conventional example 3.
Embodiment
Fig. 1 (A) and Fig. 1 (B) are the figure of three roller wedge mechanisms of the Disk brake apparatus of expression first embodiment of the invention, and Fig. 1 (A) is the major component flat sectional drawing, and Fig. 1 (B) is the B-B sectional drawing of presentation graphs 1 (A).Fig. 2 is the whole profile of first embodiment's braking device.Fig. 3 force multiplication system that to be expression three roller wedge mechanisms form with trapezoidal type four side rod mechanisms and the related major component planimetric map of brake arm.Fig. 4 (A) is the C-C sectional drawing of Fig. 3, and Fig. 4 (B) is the force multiplication system stereogram that three roller wedge mechanisms and trapezoidal type four side rod mechanisms form.Fig. 5 is the exploded perspective view of three roller wedge mechanisms and trapezoidal type four side rod mechanisms.Fig. 6 is the exploded perspective view of guide rail and connecting rod assembly parts.Fig. 7 (A) is the stereogram of connecting rod, and Fig. 7 (B) is the adjustable lever stereogram.Fig. 8 (A) has flat sectional drawing from the crash situation of the impact of brake slipper in the effect of braking initial stage of brake slipper new product, and effect has the flat sectional drawing from the crash situation of the impact of brake slipper during the full application of brake of Fig. 8 (B) when being brake pads wear.
Three roller wedge mechanisms of the Disk brake apparatus of first embodiment of the invention comprise as shown in Figure 1 substantially: by as the air chamber 4 of actuator and axle is moving and and the voussoir bar 20 of wheel axle quadrature shape configuration, be installed on this bar 20, have the voussoir 5 of opposing inclined face, according to the mobile pair of links 12,12 of swinging of a pair of home roll 6,6 that on this plane of inclination, rotates.The base end part of the intermediate portion of these connecting rods 12,12 and brake arm 3,3 links by gap adjusting mechanism 14,14.According to the action of home roll 6,6, the base end part of brake arm 3,3 is pushed expansion by times power, makes brake slipper 24,24 push action of the swing end that is provided in brake arm 3,3.In the both sides of above-mentioned home roll 6, a pair of secondary roller 7,7 and home roll 6 coaxial setting that on guide rail 11, rotate.
First embodiment's braking device main body is made of the mounting bracket 1 on the top (right side is top among Fig. 2) that is installed on chassis etc., the caliper 2 that is fixed in the bottom of this support 1 by bolt etc. as shown in Figure 2.Accommodate the air chamber 4 of braking usefulness in this caliper 2.Utilize the axle moving (above-below direction of Fig. 2) of this air chamber 4, will be supported on three rollers that the secondary roller 7,7 of its axle direction both sides forms by home roll 6 and axle via the voussoir 5 of conical cam shape and press off.Thus, shown in Fig. 1 (A), support three rollers at the upper end portion axle, the underpart axle is supported on the pair of links 12,12 at the two end part of pillar 15 and swings laterally, thus, be that a pair of regulator 14 moves the base end part of brake arm 3 respectively laterally by gap adjusting mechanism.Thus, as shown in Figure 2, brake arm 3 is an axis swing with the swing axis 21 of intermediate portion.Consequently, can freely shake the head ground axle suspension in cushion block support 23 actions of the swing end of brake arm 3 by support shaft 22, the brake slipper that is installed on cushion block support 23 presses on the side of omitting illustrated disc rotor.(to the paper dorsal part of Fig. 2)
As shown in Fig. 1 (A) of the flat sectional drawing of the major component of three roller wedge mechanisms, being contained in that air chambers 4 in the caliper 2 are fit to press (can be malleation or negative pressure any) with fluids such as air pressure is power source.The restoring force of arrester 4 by being equipped on inner helical spring etc. is to the brake off direction application of force.These helical springs being disposed at the malleation compression of opposite side, or import negative pressure and compression helical spring carries out braking maneuver to the helical spring side via diaphragm.Follow opposing to be connected in the turnover (to the drawing of Fig. 1 (A) below) of restoring force of return spring 16 of the voussoir bar 20 of air chamber 4 during braking, the voussoir 5 of conical cam shape that is fixed in this voussoir bar 20 by its plane of inclination with a pair of home roll 6,6 press-stretched laterally.The plane of inclination of voussoir 5 as described later Fig. 8 (B) obviously shown in like that, form with at least two different face angles (forward end is the high-dipping face 5B of wide-angle, and base portion side is low-angle gentle dip face 5A).By such formation, fill rapidly by little wedge shape Duo in the cushion block gap at braking initial stage, simultaneously, later halfly can obtain reliable braking force by wedging action in braking, therefore, can realize the reliable times of power that responsiveness is good.
Shown in Fig. 1 (B), the axle direction both sides of the roll shaft bolt 9 of the above-mentioned a pair of home roll 6 of axle supporting respectively axle to be supported with guide rail be secondary roller 7,7.These secondary rollers 7,7 are equipped on the outside of the two forked upper end portion (with reference to Fig. 5) of connecting rod 12.Therefore, home roll 6 is equipped on the inboard of the two forked upper end portion of above-mentioned connecting rod 12.Symbol 10 expression fastener shafts support the nut of end of the roll shaft bolt 9 of these home rolls 6 and secondary roller 7,7.In addition, as understanding among Fig. 1 (B), because voussoir 5 is positioned at the two forked upper end portion of connecting rod 12, therefore, even voussoir 5 is subjected to the power of sense of rotation with respect to home roll 6, also can limit, so can prevent that voussoir 5 is from coming off with slipping of home roll 6 by the two forked inner side surface of connecting rod 12.
Fig. 3 force multiplication system that to be expression three roller wedge mechanisms constitute with trapezoidal type four side rod mechanisms and the related major component planimetric map of brake arm.Among the present invention, not only possess the force multiplication system that the wedging action by the voussoir 5 of the plane of inclination with conical cam shape and home roll 6 produces, but also possess the force multiplication system that the caused leverage of swing by the connecting rod 12 of trapezoidal type four side rod mechanisms produces.By the combination of these two force multiplication systems, even utilize braking device small-sized and the saving space also can obtain big braking force.Promptly, the not only times power effect of the wedging action that brings by voussoir 5 and home roll 6, but also when with bearing shaft bolt 19 being connecting rod 12 swings at center, the regulator 14 that is supported on the intermediate portion of connecting rod 12 from axle brings a times power effect to the output of brake arm 3 by leverage.On the other hand, the base end part axle of above-mentioned pair of links 12,12 is supported on pillar 15, by brake arm 3,3 by external cause when being the impact of disc rotor and displacement from wheel, connecting rod 12 is that the center is in pillar 15 side displacements (with reference to Fig. 8) with home roll 6 sides.Thus, even brake arm 3 is because the frequent displacements of external cause such as impacts, also can absorb by the swing that axle is supported on the connecting rod 12 of pillar 15, suppress to feed through to voussoir 5 and home roll 6 because of the power of external cause, therefore, prevent from the wedge portions that constitutes force multiplication system is brought harmful effect.
Fig. 4 (A) is the C-C sectional drawing of Fig. 3, and Fig. 4 (B) is the stereogram of the force multiplication system that is made of three roller wedge mechanisms and trapezoidal type four side rod mechanisms, can understand the related formation of pillar 15 and connecting rod 12 well.Fig. 4 (A) for the C-C section of Fig. 3 promptly axle be supported on the sectional drawing of 19 ones on bearing shaft bolt of connecting rod 12,12 at the two end part of pillar 15, can be understood as pair of posts 15,15 and voussoir bar 20 is free state.The base end part axle of connecting rod 12 is supported on intermediate portion, 15,15 on pillar is supported on the bearing shaft bolt 19 at two end part, the two torsion springs 17,17 of intercalation between the base end part of connecting rod 12 and pillar 15.Shown in Fig. 4 (B), one end of two torsion springs 17 is limited to connecting rod 12, and the other end is limited to pillar 15, and (in the illustrated embodiment, the intermediate portion of a spring is limited to connecting rod 12, two end part are limited to pair of posts 15 respectively, but also can set two springs on each bearing shaft bolt 19).Thus, as previously mentioned, brake arm 3 is because impact etc. are outer thereby displacement continually, after axle is supported on connecting rod 12 swings of pillar 15, by two torsion springs 17, can be promptly trapezoidal type four side rod mechanisms be returned to original position (shape).
Fig. 5 is the exploded perspective view of three roller wedge mechanism structure and trapezoidal type four side rod mechanisms.The base end part of pair of links 12,12 utilizes bearing shaft bolt 19 to be supported on the two end part of pair of posts 15,15 with the quick condition axle via two torsion springs 17,17, as previously mentioned, home roll 6 and secondary roller 7,7 be equipped on by 9 supportings of roll shaft bolt each connecting rod 12 two forked upper end portion inside and outside.The formation of connecting rod 12 clearly shows in Fig. 7 (A), form the upper bolt hole 12A that inserts logical roll shaft bolt 9 in two forked upper end portions, form the sphere axis hole 12C that accommodates inside ball spherical bearing 13B at intermediate portion, on the underpart, form and insert the lower bolt hole 12B that axis holds axle bolt 19.Each secondary roller 7,7,7,7 is to constitute in the mode of rotating on the rotation surface 11C of the upper surface that is disposed at guide rail 11.This rotation surface 11C goes up and forms the secondary roller 7 of restriction (outside in the illustrated example) mobile R stepped part 11D axially.Certainly prevent coming off of secondary roller 7 self by this R stepped part 11D, crawling of the secondary roller 7 in the time of can also limiting connecting rod 12 swings that constitute force multiplication system effectively is moving, can promote slick and sly connecting rod swing and can not reduce times force efficiency of force multiplication system.In addition, go up in the opposite direction,, can realize sliding less and rolling resistance accounts for major part by the rotation difference that secondary roller 7 rotates on the rotation surface 11C of guide rail 11 in the side that rotates by voussoir 5 expansions with home roll 6, and the few force multiplication system of slip resistance.
In addition, clearly illustrated the formation of the regulator 14 that is provided with between the intermediate portion of connecting rod 12 and the brake arm 3 among Fig. 5.The intermediate portion of accommodating the connecting rod 12 of inside ball spherical bearing 13B is equipped with regulator 14, and this regulator 14 constitutes by the adjusting nut 14B of peripheral part in the middle of ratchet 14C is arranged at with the adjusting screw 14A of the external thread part of the internal screw-thread screw of the inside of the cylindrical portion of being located at this adjuster nut 14B quarter.Symbol 14D represents adjustable lever, the fixed base end 14G of one end is by the end face of screw in a guide rail 11, and the tapering 14E of butt when forming home roll 6 superfluous strokes on top, below the other end form the claw 14F that the ratchet 14C that makes above-mentioned adjusting nut 14B only rotates to a direction.Adjustable lever 14D is made of the spring material with restoring force.Fig. 7 (B) is the stereogram that has only taken off adjustable lever 14D.
Fig. 6 is the exploded perspective view of guide rail and connecting rod assembly parts.At this, can understand the axle bearing state that passes through two torsion springs 17 of connecting rod 12 and pillar 15 well.Suitably carry out the axle supporting by needle bearing 18.In addition,, clearly illustrated the 11B of binding support part of the relative 11A of pair of tracks portion that connects guide rail 11, can be well understood among the axis hole 11E of the central part that is arranged in the 11B of this binding support part by the slotting voussoir bar 20 that is connected with such as lining 29 grades at this.(having omitted the diagram of voussoir bar 20 among Fig. 6).This situation can be easily shows the squareness of rotation surface 11C on the guide rail 11 and voussoir bar 20 by machining.
Fig. 8 is the figure of the state before and after explanation automatic backlash controlling mechanism (regulator) 14 the adjusting.Fig. 8 (A) is that the braking initial stage effect of brake slipper new product has the flat sectional drawing from the crash situation of the impact of brake slipper, and effect has the flat sectional drawing from the crash situation of the impact of brake slipper during the full application of brake of Fig. 8 (B) when being brake pads wear.During brake slipper (symbol 24 of Fig. 1 (A)) wearing and tearing, shown in Fig. 8 (B), it is big that the swing of brake arm 3 becomes, and by automatic backlash controlling mechanism 14, it is big that the swing of connecting rod 12 also becomes.So the stroke of voussoir bar 20 that is provided with voussoir 5 is also superfluous a lot.Thus, home roll 6 moving laterally also becomes big, and the tapering 14E of adjustable lever 14D is pushed to adjusting nut 14B.During with the explanation of the exploded perspective view of Fig. 5, adjustable lever 14D is a center curvature with the fixed base end 14G of an end, the claw 14F sliding contact (not rotating) of the other end also moves down fully in the ratchet 14C of adjusting nut 14B, releasing by above-mentioned such braking maneuver, when adjustable lever 14D utilizes the restoring force of self to revert to original position, claw 14F and ratchet 14C engagement are only rotated adjusting nut 14B towards a direction.Thus, the axle direction that will and be screwed together between the adjusting screw 14A in the adjusting nut 14B carries out the automatic backlash adjusting apart from expansion, can suppress because the surplus swing of the brake arm 3 that brake pads wear produces.
More than embodiments of the invention are illustrated, but in the scope of aim of the present invention, the kind of actuator, the situation of air chamber, (can adopt positive pressure type, any of negative-pressure type) shape, form (diaphragm-type, piston type), the coupled condition of air chamber and voussoir bar, voussoir is installed on the state of voussoir bar, the formation form of the plane of inclination of voussoir (selecting of the angle of at least two out-of-plane angles, only form the plane of inclination being contacted with on the two sides of home roll, but for example also can voussoir be made into taper shape, the section of home roll as the recessed conical grooves that is fit to the voussoir conical surface suppressed to rock) to have, the shape of connecting rod, form, the shape of pillar, form, pitman shaft is supported on the state of pillar, carry out the shape of the two torsion springs put of keeping in the center of the connecting rod on the pillar, form and set the position, the axle bearing state of home roll and secondary roller on the connecting rod, gap adjusting mechanism is to connecting rod and the brake arm base end part form of establishing (also can use the suitable universal joint that is provided with beyond the spherical bearing) that is situated between, the shape of gap adjusting mechanism, form (also can suit to adopt the controlling mechanism that screws togather thread shape in addition of adjusting nut and adjusting screw.In addition, to enlarge automatic backlash controlling mechanism that the mode at the interval between the base end part of connecting rod and brake arm regulates with superfluous stroke as first-selection by home roll, but the structure of manual tune is also in category of the present invention), the shape of automatic backlash controlling mechanism, form (also can constituting) in mode by secondary roller adjustable lever swing, the shape of guide rail, form, the rotary state of the secondary roller on the slideway, the shape of R stepped part (first-selected form along rotation surface, but also can constitute) to the mode that secondary roller is made as many colyliforms and will groove therebetween be formed on the prominent bar guiding on the slideway in the outside of secondary roller, the shape that depends on trapezoidal type four side rods of voussoir and home roll and pillar, forms etc. can suitably be selected.The various factors that embodiment put down in writing all only with the premises as illustration, and can not be interpreted as limiting.
Second embodiment
The braking device that Fig. 9 (A)~Fig. 9 (B) expression has the second embodiment of the invention of the cushion block support of being with regulatory function.Fig. 9 (A) will regulate the whole sectional drawing of braking device that correction mechanism is equipped on the brake arm side, and Fig. 9 (B) is a braking device major component sectional drawing.
Shown in Fig. 9 (A)~Fig. 9 (B), with a pair of brake arm 302,302 upper end portion 302A, 302A launches to push, a cushion block support 301 that is fixed on its underpart will be installed on, 301 brake slipper 308,308 carry out push action, in above-mentioned such Disk brake apparatus, be installed on above-mentioned cushion block support 301,301 brake slipper 308,308 wearing and tearing and when stroke took place, no matter above-mentioned brake arm 302,302 posture how, keeps brake slipper 308 abreast, 308 and the adjusting correction mechanism 310 of disc rotor R, 310 are located at brake arm 302,302 and cushion block support 301, between 301.
Shown in Fig. 9 (A), intermediate portion is respectively by the power source of a pair of brake arm 302,302 of 304,304 supportings of rocking arm transmission shaft of two side lower parts of housing 303 by the actuator that do not describe in detail etc., launches to push upper end portion 302A, 302A via cam structure and automatic backlash controlling mechanism and rod unit 322,322.In the underpart of rocking arm transmission shaft 304,304, each cushion block support 301,301 can be supported by axle in the plane of oscillation of rocking arm transmission shaft 304 by cushion block axle 305,305 with freely shaking the head.The relative brake slipper 308,308 towards disc rotor R is installed on the cushion block support 301,301.
Among second embodiment, no matter the posture of above-mentioned brake arm 302 how, when the adjusting correction mechanism 310 of keeping brake slipper 308 and disc rotor R abreast is located between brake arm 302 and the cushion block support 301, be disposed at the inside of brake arm 302 on the top of the axle support 305 of above-mentioned cushion block support 301.As with shown in Fig. 9 (B) of the A portion magnifying show of Fig. 9 (A), the other end of friction lever 306 that one end is held in the upper end portion of cushion block support 301 by 312 of pins is extended towards brake arm 302 sides of the below of rocking arm transmission shaft 304 and is provided with, and connects brake arm 304 and set.In the inside of brake arm 2, arranged in series has in the periphery of friction lever 306 with the fixing guard ring 314 of the friction spring 313 of the frictional force sliding contact of regulation, O type ring in accommodating the reception hole 302C of friction lever 306.
Chimeric on the periphery of friction spring 313 have a cover 315, by C type guard ring 318 that friction spring 313 and cover 315 is fixing via packing ring 317.Cover 315 return spring 316 by being equipped on its periphery on the periphery of friction lever 306 to the direction application of force of leaving cushion block support 301.That is, on the direction that enlarges the interval between brake arm 302 and the cushion block support 301, friction spring 313 is kept out friction and is constituted movably on the periphery of friction lever 306.The sliding contact surface of the periphery of friction lever 306 and brake arm 302 and above-mentioned O type ring fixedly the sliding contact surface of guard ring 314 and then O type ring fixedly guard ring 314 periphery and take in to be situated between between week in the reception hole 302C of friction lever 306 of brake arm 302 and establish O type ring 319,319, if, then can prevent the intrusion of outside dust with lubricated wet goods sealing.Symbol 323 expressions end by C type guard ring 318 cards and the demountable dustproof guard shield of using when the maintenance spot check.
Originally, cushion block support 301 can be freely constitutes by utilizing cushion block axle 305 with shaking the head, thus when braking cushion block support 301 and brake slipper 308 suitably sliding contact in disc rotor R.Brake slipper 308 wearing and tearing when brake arm 302 is excessively swung, by the automatic backlash controlling mechanism that sets between above-mentioned brake arm upper end portion 302A, 302A, enlarge the interval between brake arm upper end portion 302A, the 302A a little.But the contact angle of brake slipper 308 and disc rotor R that is positioned at the underpart of brake arm 302 changes.Therefore, especially because from the movement position of the cushion pad 301 of non-braking when application position changes, owing to Vehicular vibration etc. departs from, and brake slipper 308 contacts with disc rotor R and noise and towing takes place.
Among second embodiment,, also can keep the braking posture of brake slipper 308 by adjusting correction mechanism 310 even under the situation of brake slipper 308 wearing and tearing and brake arm 302 excessive swings.Be friction spring 313 on the periphery of friction lever 306, keep out the friction and move, and keep its correction position by return spring 316, and revise tilt angle with respect to the cushion block support 301 of brake arm 302, keeping cushion block support 301 is suitable parallel position between brake slipper 308 and the disc rotor R.Thus, can prevent that especially the eccentric wear from the brake slipper of non-braking when application position changes undermines stretching because the vibration of vehicle produces.In addition, the complicated adjusting correction mechanism is equipped on thicker brake arm side slightly, and thus, the cushion block bracket side only sets anchor etc., consequently can realize the simplification and the lightweight of cushion block support.
The 3rd embodiment
The Disk brake apparatus that correction mechanism is disposed at the third embodiment of the present invention of cushion block bracket side is regulated in Figure 10 (A)~Figure 10 (C) expression.Figure 10 (A) is the whole sectional drawing of braking device, and Figure 10 (B) is the major component sectional drawing of braking device.In the present embodiment, enlarged view as the bottom of the arm axle 304 of the brake arm 302 of Figure 10 (A) is shown in Figure 10 (B), when being located between brake arm 302 and the cushion block support 301 for regulating correction mechanism 310 Jie, different with above-mentioned second embodiment's 2 device, be arranged at the formation of inside of cushion block support 301 on top of the axle support 305 of cushion block support 301.In addition, be that the return spring 316 of friction lever 306 application of forces is disposed at brake arm 302 sides to a part of parts of constitute regulating correction mechanism 310.
Shown in Figure 10 (C), accommodate the end that the end has the friction lever 306 of flange 306A in the accepting hole 302C of brake arm 302.The back side of flange 306A is situated between and establishes pin cap 320, is limited to the groove of the inner peripheral surface of accepting hole 302C by pin cap guard ring 321.Be situated between in the front of flange 306A (cushion block support 301 sides) and establish return spring 316, with friction lever 306 to the direction application of force of leaving cushion block support 301.Be formed at from another distolateral insertion of the outstanding friction lever 306 of the accepting hole 302C of brake arm 302 in the accepting hole 301C of upper end portion of cushion block support 301.At the peripheral part of friction lever 306, restriction is slipped chimeric to the friction spring 313 that the path section portion of accepting hole 301C moves by the frictional force of regulation.Brake arm 302 side shiftings that brake arm 302 sides of friction spring 313 are situated between and establish pad 317 and limit in the cushion block support 301 of friction spring 313 by C type guard ring 318.
Because such formation, so, under the situation that brake arm 302 is excessively swung, also can keep the braking posture of brake slipper 308 even in brake slipper 308 wearing and tearing.That is, the restoring force of the flange 306A of friction lever 306 opposing return spring 316, and fill gap d between the section portion of flange 306A and accepting hole 302C, simultaneously with friction lever 306 to 301 side tractions of cushion block support.In addition, on the outer circumferential side of friction lever 306, friction spring 313 opposings rub and move.Its result revises the tilt angle with respect to the cushion block support 301 of brake arm 302.Keep its correction position by return spring 316, maintenance cushion block support 301 is the suitable parallel position between brake slipper 308 and the discoid sub-R.Thus, prevent because the particularly eccentric wear when non-braking position is shifted to application position and changed that Vehicular vibration etc. causes undermines stretching.And, because the part of adjusting correction mechanism such as return spring 316 is equipped on brake arm 302 sides, thus can and cushion block support 301 between construct the adjusting correction mechanism evenly.Therefore, brake arm 302 sides also can be simplified.
The 4th embodiment
Figure 11 (A)~Figure 11 (B) expression possesses the braking device of the fourth embodiment of the present invention of the cushion block support of being with regulatory function.Figure 11 (A) is the whole sectional drawing of the braking device that is equipped with linkage component, and Figure 11 (B) is the major component action diagram of braking device.In the 4th embodiment's the braking device, shown in Figure 11 (A) and Figure 11 (B), regulate correction mechanism and possess the linkage component 307,307 that the fulcrum 307B with the fulcrum 307A on the top of housing 303 and the top of cushion block support 301,301 is connected.By such formation, shown in the action diagram of Figure 11 (B), fulcrum 307A, 307B, cushion block axle 305 and arm axle 304 are connected to parallelogram shape.Therefore, when following the wearing and tearing of brake slipper as black arrow the moving of the brake arm 302 of excessive swing, cushion block support 301 is also suitably followed, can keep and disc rotor between parallel.In the present embodiment, by adopting simpler linkage component, the structure simplification of regulating correction mechanism.In addition, if fulcrum 307A, 307B, cushion block axle 305 and arm axle 304 constitute parallelogram shape, the linkage component 307 that then connects housing 303 good cushion block supports 301 also can constitute the bottom of connection housing 303 and the bottom of cushion block support 301.
The 5th embodiment
Figure 12 (A)~Figure 12 (D) expression possesses the braking device of the fifth embodiment of the present invention of the regulatory function with the linkage component that forms spring portion.Figure 12 (A) is the stereogram of linkage component, and Figure 12 (B) is the major component action diagram, and Figure 12 (C) is the related pie graph of each, Figure 12 (D) expression wheel movement figure.Shown in Figure 12 (A), form the 307C of spring portion that is bent to form mountain type shape at the intermediate portion of the linkage component 307 that constitutes by the leaf spring material.Shown in Figure 12 (C), the two end part up and down of linkage component 307 (in Figure 12 (C) figure right-hand for top) respectively axle be supported on be positioned at from the arm axle 304 of brake arm 302 to housing 303 apart from the fulcrum 307A of the bottom of the position of a and be positioned at fulcrum 307B from the cushion block axle 305 of cushion block support 301 to the bottom of the position of the distance b of brake arm 302.At this selected a=b, the quadrilateral that the each point of arm axle 304, fulcrum 307A, fulcrum 307B, cushion block axle 305 is linked is via linkage component 7, shown in Figure 12 (B), in the wobbling action of brake arm 302 that with respect to housing 303 is the center, continue to be maintained parallelogram with arm axle 304.Therefore, above-mentioned cushion block support 1 forms parallel slipping with the side of disc rotor.And, for being the unsteadiness of wheels of the three-dimensional at center with the wheel center O shown in Figure 12 (D), the existence of the 307C of spring portion by above-mentioned linkage component 307 absorbs these effects, therefore, the contacting of deflection that can suppress cushion block and disc rotor can prevent to stretch and eccentric wear decreases.
The 6th embodiment
Figure 13 (A)~Figure 13 (D) will be for regulating the explanatory drawings such as major component section of braking device of the sixth embodiment of the present invention that correction mechanism is arranged at spool support inside of cushion block support.In the 6th embodiment's braking device, regulate the inside of cushion block support 301 that correction mechanism 310 is disposed at the axle support of cushion block support 301.Shown in Figure 13 (C), with the big slightly accepting hole 301C of diameter that the axis hole that is used for cushion block axle 305 in the cushion block support 301 abuts to form, the centralizer 311 of accommodating the return spring 309 of the coiled type shown in Figure 13 (D) and connecting with it.One end 309A of return spring 309 along establishing, is limited to the axial trough 301A that forms on the axle direction of accepting hole 301C in diametric(al).The other end 309B of return spring 309 extends setting at axle direction, is limited in the hole of centralizer 311.The interior week of centralizer 311 is slidably connected to cushion block axle 305 with the frictional force of stipulating.In addition and the subtend side of the brake arm 302 of centralizer 311 also can with the regulation frictional force and brake arm 302 slip.
Like this, because regulating correction mechanism 310 is made of spring 309 and centralizer 311 in the axle support that is arranged at above-mentioned cushion block support 301, therefore, brake pads wear and when on cushion block support 301, producing rotation angle more than the specified value, power beyond the resiliently deformable by spring 309, centralizer 311 overcome with the frictional force of the export-oriented side of the outer circumferential face of cushion block axle 305 or brake arm 302 rotates.Consequently, brake arm 302 is kept brake slipper 308 and disc rotor R abreast with respect to the relative angle displacement of cushion block support 301.Like this, in the present embodiment, owing to can set the adjusting correction mechanism at the axle support, so forming not only, friction lever etc. can not be exposed to the outside, and be difficult to be subjected to influence, appearance looks elegant, the simpler structure of slungshot and heavy snow, and owing to can not dispose the parts of any adjusting correction mechanism, can make the simple structure of brake arm side in the brake arm side.
And, according to the degree that relatively rotates angle of brake arm 302 and cushion block support 301, rotate centralizer 311 by the outer power of the resiliently deformable of spring 309 and regulate correction.Like this, carry out owing to regulate to revise, so the action of regulating when revising becomes smooth with action as the sense of rotation of the axle support of the central part of the action of cushion block support 301.In addition, also can the private side of brake arm 302 that correction mechanism 310 be equipped on the axle support of above-mentioned cushion block support 301 will be regulated.Under this situation, form not only that friction lever etc. can not be exposed to the outside, and be difficult to be subjected to influence, appearance looks elegant, the simpler structure of slungshot and heavy snow, and, set complicated adjusting correction mechanism slightly in well-to-do brake arm side, can realize the simplification and the lightweight of cushion block bracket side.
More than, embodiments of the invention are described, but in the scope of aim of the present invention, can be to the shape of brake arm, the axle supporting form of form and housing thereof, (first-selection is a circular section to the shape of the friction lever of formation adjusting correction mechanism, also can be for non-circular, the formation of flange etc.), form, the shape of friction spring, form (first-selected coiled type, have the cylindric of crack at axle direction, rubber-like is cylindric etc.), the friction fit form of friction lever and friction spring (also can form the concavo-convex of fine restraining usefulness at the outer circumferential face of the friction lever outside the friction lever surface of the level and smooth shape that produces the frictional force of stipulating, in the inner peripheral surface formation restraining convex-concave corresponding with these of friction spring.), to the brake arm of friction lever or the support of cushion block support, chimeric form (the application of force support etc. of return spring) with bar of simple stud shaft supporting, flange, (use spring cup etc. and so on when using spring to the cushion block support of friction spring or the support of brake arm, chimeric form, or only friction spring is contained in accommodate in the parent etc.), constitute to regulate the linkage component of correction mechanism shape (basically linkage component just can, but also can set linkage component in axial a plurality of positions of cushion block axle.Except that the linkage component of rigid body shape, can be linkage component of the leaf spring form of the formation form that comprises spring portion etc.), form and to the support form of brake arm and cushion block support, end form (except that the axial trough of the assembling performance that is limited to the spring that is used to have the diametric(al) jut to the card of the accepting hole of spring that constitute to regulate correction mechanism, also can be limited to the elasticity self of utilizing spring and not form axial trough, the conjugate foramen that has only the diametric(al) jut that forms), comprise friction fit form to the cushion block axle of centralizer (except that utilize cushion block axle outer circumferential face or and the brake arm side between the frictional force of regulation, form the concavo-convex of fine restraining usefulness at cushion block axle outer circumferential face or brake arm side, also can form and these corresponding restraining convex-concaves at the inner peripheral surface of friction spring or side) cushion block support shaft support in spring and the state of accommodating of centralizer, accommodate position (can be housed in the either side of brake arm side and cushion block bracket side), the shape of spring, form, the shape of centralizer, form and the card between them end form, during upper end portion that a pair of brake arm is pushed in expansion, the form of the arrester of the machine of actuating of formation power combination (can adopt positive pressure type, any of negative-pressure type, film type, piston type etc.), number (also can be provided with to stay and stop the chamber), constitute the shape of the cam structure of force multiplication system, form, the shape form of automatic backlash controlling mechanism, the shape of rod unit, form and to the assembling morphology of its brake arm upper end portion is to the swing axis supporting form (omnirange has the device of degrees of freedom etc.) of the housing of brake arm etc.The various factors that embodiment put down in writing all be with above-mentioned as illustration, and can not explain with limiting.
Claims (16)
1, a kind of Disk brake apparatus, it possesses:
By actuator (4) axle moving and with wheel axle with the voussoir bar (20) of quadrature shape configuration,
Be installed on described voussoir bar (20) and have the plane of inclination voussoir (5),
The home roll that on described plane of inclination, rotates (6) and
According to the connecting rod of swinging (12) that moves of described home roll (6,6),
The intermediate portion (12C) of described connecting rod (12) is connected by gap adjusting mechanism (14) with the base end part of brake arm (3),
According to moving of described home roll (6), the base end part of described brake arm (3) is pushed expansion by times power, pushes the brake slipper of the swing end that is equipped on described brake arm (3),
Both sides in described home roll (6), a pair of secondary roller (7,7) that guide rail (11) go up to rotate and described home roll (6) be equipped on coaxial on.
2, Disk brake apparatus as claimed in claim 1, wherein,
Base end part (12B) axle of described connecting rod (12) is supported on the two end part of pillar (15),
Constitute trapezoidal type four side rods by described voussoir (5), described home roll (6), described connecting rod (12) and described pillar (15).
3, Disk brake apparatus as claimed in claim 1, wherein,
The two end part of described gap adjusting mechanism (14) are connected via the base end part of spherical bearing (13A, 13B) with described connecting rod (12) and described brake arm (3).
4, Disk brake apparatus as claimed in claim 1, wherein,
Described slideway (11) is gone up the axial mobile stepped part (11D) that forms the described secondary roller of restriction (7).
5, Disk brake apparatus as claimed in claim 1, wherein,
The plane of inclination of described voussoir (5) possesses different two faces (5A, 5B) of face angle.
6, as each described Disk brake apparatus in the claim 1~5, wherein,
The automatic backlash controlling mechanism that described gap adjusting mechanism (14) is regulated by the mode that the interval between the base end part of described connecting rod (12) and described brake arm (3) is enlarged with the superfluous stroke by described home roll (6) is formed.
7, Disk brake apparatus as claimed in claim 2, wherein,
Axle support at the two end part of the base end part (12B) of described pair of links and pillar (15) sets two torsion springs (17).
8, a kind of Disk brake apparatus, it possesses:
Brake arm (302),
The axle be fixed in the lower end of described brake arm (302) and support brake slipper (308) cushion block support (301) and
Be arranged between described brake arm (302) and the described cushion block support (301) and no matter how the posture of described brake arm (302) all keeps the adjusting correction mechanism (310) of brake slipper (308) and disc rotor (R) abreast.
9, Disk brake apparatus as claimed in claim 8, wherein,
Described adjusting correction mechanism (310) is equipped on the inside of brake arm (302) on top of the axle support (305) of described cushion block support (301).
10, Disk brake apparatus as claimed in claim 8, wherein,
Described adjusting correction mechanism (310) is equipped on the inside of cushion block support (301) on top of the axle support (305) of described cushion block support (301).
11, as claim 9 or 10 described Disk brake apparatus, wherein,
Described adjusting correction mechanism (310) is by the either party's who is held in described brake arm (302) and cushion block support (301) friction lever (306) and prop up friction spring (313) formation that is held in the opposing party,
By described friction lever (306) be installed on relatively moving between the friction spring (313) of described friction lever (306), keep brake slipper (308) and disc rotor (R) abreast.
12, Disk brake apparatus as claimed in claim 8, wherein,
The linkage component (307) that described adjusting correction mechanism (310) is connected by the top with the top of housing (303) and cushion block support (301) or the linkage component (307) that the bottom of the bottom of housing (303) and cushion block support (301) is connected formed.
13, Disk brake apparatus as claimed in claim 12, wherein,
Described linkage component (307) possesses spring portion (307C).
14, Disk brake apparatus as claimed in claim 8, wherein,
Described adjusting correction mechanism (310) is equipped on the inside of cushion block support (301) of the axle support (305) of described cushion block support (301).
15, Disk brake apparatus as claimed in claim 8, wherein,
Described adjusting correction mechanism (310) is equipped on the inside of brake arm (302) of the axle support (305) of described cushion block support (301).
16, as claim 14 or 15 described Disk brake apparatus, wherein,
Described adjusting correction mechanism (310) is made of spring (309) in the axle support (305) that is equipped on described cushion block support (301) and centralizer (311),
In brake slipper (308) wearing and tearing and when cushion block support (301) is gone up the rotation angle that produces more than the specified value, utilize the resiliently deformable power in addition of spring (309), the relative angle displacement with respect to brake arm (302) of centralizer (311) rotation and cushion block support (301), and keep brake slipper (308) and disc rotor (R) abreast.
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007237368 | 2007-09-13 | ||
JP2007-237368 | 2007-09-13 | ||
JP2007237368 | 2007-09-13 | ||
JP2007326760A JP4871854B2 (en) | 2007-12-19 | 2007-12-19 | Triple roller wedge mechanism |
JP2007-326760 | 2007-12-19 | ||
JP2007326760 | 2007-12-19 | ||
JP2008193079A JP4932799B2 (en) | 2007-09-13 | 2008-07-28 | Pad holder with adjuster function |
JP2008193079 | 2008-07-28 | ||
JP2008-193079 | 2008-07-28 |
Publications (2)
Publication Number | Publication Date |
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CN101387324A true CN101387324A (en) | 2009-03-18 |
CN101387324B CN101387324B (en) | 2011-06-29 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2008102155868A Active CN101387324B (en) | 2007-09-13 | 2008-09-16 | Pressing and actuating mechanism of disc brake device |
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CN (1) | CN101387324B (en) |
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CN101907140A (en) * | 2009-06-03 | 2010-12-08 | 河南理工大学 | Pincer type brake with force-amplifying mechanisms |
CN102182774A (en) * | 2010-12-28 | 2011-09-14 | 苏州新区科兴威尔电子有限公司 | Brake mechanism |
CN102483112A (en) * | 2009-05-14 | 2012-05-30 | 住友金属工业株式会社 | Pneumatic disc brake device for railroad vehicle |
CN105308347A (en) * | 2013-06-19 | 2016-02-03 | 新日铁住金株式会社 | Caliper brake device for railway vehicle |
CN105849431A (en) * | 2013-12-19 | 2016-08-10 | 品驰布本泽尔有限责任公司 | Stop Arrangement And Braking Device Having Such Arrangement |
CN106662184A (en) * | 2014-08-18 | 2017-05-10 | Kyb株式会社 | Parking brake unit |
CN108930729A (en) * | 2017-05-25 | 2018-12-04 | 焦作金箍制动器股份有限公司 | A kind of eccentric abrasion prevention power hydraulic pressure disk brake |
CN109661340A (en) * | 2016-08-25 | 2019-04-19 | 德尔纳刹车公司 | Rod-type brake apparatus |
CN110234899A (en) * | 2017-01-19 | 2019-09-13 | 克诺尔轨道车辆***有限公司 | Caliper unit |
CN111775994A (en) * | 2020-06-09 | 2020-10-16 | 赖振友 | Urban rail transit vehicle bogie |
CN112268081A (en) * | 2020-10-26 | 2021-01-26 | 河北翔金超环保科技有限公司 | Eccentric wear prevention electric hydraulic brake |
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JP5118654B2 (en) | 2009-01-19 | 2013-01-16 | 三菱重工業株式会社 | Disc brake device |
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DE2418225C3 (en) * | 1974-04-13 | 1980-07-24 | Fried. Krupp Gmbh, 4300 Essen | Release device for a spring-actuated partial-lined disc brake |
US4121697A (en) * | 1976-09-29 | 1978-10-24 | Jacob Kobelt | Cam actuated caliper brake assembly |
GB8324942D0 (en) * | 1983-09-17 | 1983-10-19 | Lucas Ind Plc | Actuator assemblies for vehicle brakes |
JPS61116128A (en) * | 1984-11-13 | 1986-06-03 | Ishikawajima Harima Heavy Ind Co Ltd | Disc brake unit |
US4697671A (en) * | 1985-04-12 | 1987-10-06 | Twiflex Limited | Brakepad assembly for disc brake |
CA2036363C (en) * | 1990-04-13 | 1999-08-24 | William Sheridan | Disk brake for elevator |
JP2003156086A (en) * | 2001-11-21 | 2003-05-30 | Nsk Ltd | Electric brake device |
US7328778B2 (en) * | 2005-08-04 | 2008-02-12 | Hillmar Industries Ltd. | Wheel brake caliper |
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- 2008-07-28 JP JP2008193079A patent/JP4932799B2/en not_active Expired - Fee Related
- 2008-09-16 CN CN2008102155868A patent/CN101387324B/en active Active
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CN110234899A (en) * | 2017-01-19 | 2019-09-13 | 克诺尔轨道车辆***有限公司 | Caliper unit |
CN108930729A (en) * | 2017-05-25 | 2018-12-04 | 焦作金箍制动器股份有限公司 | A kind of eccentric abrasion prevention power hydraulic pressure disk brake |
TWI719531B (en) * | 2018-07-13 | 2021-02-21 | 日商納博特斯克股份有限公司 | Clutch device and brake device |
CN111775994A (en) * | 2020-06-09 | 2020-10-16 | 赖振友 | Urban rail transit vehicle bogie |
CN111775994B (en) * | 2020-06-09 | 2021-10-15 | 襄阳森远工程机械科技开发有限公司 | Urban rail transit vehicle bogie |
CN112268081A (en) * | 2020-10-26 | 2021-01-26 | 河北翔金超环保科技有限公司 | Eccentric wear prevention electric hydraulic brake |
CN112268081B (en) * | 2020-10-26 | 2022-02-08 | 河北翔金超环保科技有限公司 | Eccentric wear prevention electric hydraulic brake |
Also Published As
Publication number | Publication date |
---|---|
JP2009085429A (en) | 2009-04-23 |
JP4932799B2 (en) | 2012-05-16 |
CN101387324B (en) | 2011-06-29 |
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