CN1159850A - Wet disc Brake - Google Patents
Wet disc Brake Download PDFInfo
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- CN1159850A CN1159850A CN95195521A CN95195521A CN1159850A CN 1159850 A CN1159850 A CN 1159850A CN 95195521 A CN95195521 A CN 95195521A CN 95195521 A CN95195521 A CN 95195521A CN 1159850 A CN1159850 A CN 1159850A
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- mentioned
- braking surface
- groove
- brake
- rotating disk
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/84—Features relating to cooling for disc brakes
- F16D65/853—Features relating to cooling for disc brakes with closed cooling system
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a brake device, which comprises a single brake turntable and one or more brake blocks 10 that are used to perform the brake on the annular surface of the turntable, the device also comprises a surrounding housing for containing liquid medium during use, the brake blocks 10 of the device are constructed such that the brake surface is provided with a plurality of grooves (17,27), so that the grooves (17,27) are rotated relative to the turntable at an angle backwardly, the grooves led to the flange 13 of the brake block 10 are provided with a broadened opening-shaped area 28, the grooves (17,27) had better be made to be curved, the convex side of the grooves are toward the flange 13 of the brake block, the curvature of the grooves is approximate to that of a round arc, so that the angle formed between the tangent of the front end 26 of the grooves and the inner peripheral flange 15 of the brake blocks 10 is equal to the angle formed between the tangent of the tail end 18 of the grooves and the outer peripheral flange 16 of the brake blocks.
Description
The present invention relates to improvement, particularly to the improvement of the dish and the structure shape of brake pad to disk type braker parts and part.
Most traditional vehicle brakes generally include a rotating disk with a pair of friction material block, and this friction material block is on the relative braking surface that acts on rotating disk under the environment of drying respectively.There are many significant disadvantages in this system, coils promptly particularly that friction material block will discharge into the atmosphere abrasive particle through frayed in use, this situation be pollution arranged and also jeopardize health probably.In addition, the performance of this break is inhomogeneous and significant the change can taken place after after a while, and this is especially because brake pad weares and teares and fall in use such as water or other liquid that the first-class extraneous factor of braking surface causes.
Known wet disc brake has some forms like this, and they are equipped with a plurality of friction material dishes in the brake shell of the sealing that contains oil.This wet disc brake use viscosity in the time of 100 ℃ usually is 7～8cst (mm
2/ s) or bigger oil.This oil also has 100 low-viscosity index usually, and it makes viscosity that bigger variation be arranged when the oil temperature changes.Dish is made the friction material that makes some be loaded with groove rotate, other smooth dish is then static, and finishes braking action by vertically dish being pushed away together.Oil is main as freezing mixture, for this reason, makes oil by the groove circulatory on the dish of rotation.But,,, think that 7-8 centistoke or higher oil are necessary to eliminate stick-slip, wearing and tearing and the local superheating of brake friction dish and plate in order to promote fluid mechanics to lubricate and " to extrude " in the friction zone renitency that engages one another.The shortcoming of utilizing the fluid mechanics lubricating status is for producing lower friction factor in the district that engages one another.Like this, because these oil produce disadvantageous effect to frictional strength, must have the much bigger braking surface area that provides by a plurality of dishes.In addition, the configuration of these systems usually configuration with dry friction system described in the epimere is obviously different, so makes it to be difficult to exchange corresponding parts.
Such one type vehicle braked device parts that are used for are also disclosed in the international patent application No.POT/AU92/00540 of a previous application, it comprises that one is suitable for having with the single rotating disk and that axle head rotates the static housing of the encirclement rotating disk of one or more sealings, and but the acting as of sealing provides the sealing basically in a braking action district that surrounds above-mentioned rotating disk at least pressure balanced zone.It a pair of brake pad is set at least,, simultaneously, also so forms described shell, so that can contain liquid at least in part braking district to engage with the relative braking surface of rotating disk circumference area.In the part of its disclosure, above-mentioned international patent application points out that liquid can remain on the horizontal plane place that surpasses sealing, invades enclosure interior so that prevent pollutant, particularly invades in the zone of braking surface and brake pad.Above-mentioned international patent application further discloses the brake pad that comprises the braking bottom board that is fixed with friction material thereon, and the friction material of the face that engages with rotating disk is arranged, and forms the special one or more grooves of structure shape on this face.But, with that groove wherein is set is opposite with other oil-immersed type braking system of circuit of assisting oil, just above-mentioned break layout is only at liquid or lubricated minimum and for oil is scraped and discharges and beneficial when being provided with groove from braking surface.
Purpose of the present invention is for providing a kind of improved friction material product, especially brake slipper and other part, and they can be used in this class brake member shown in the above-mentioned international patent application.
Another preferred purpose arranges that for a kind of improved break is provided it can advantageously adopt the part of aforesaid friction material product and other brake components.Also have a preferred purpose, promptly arrange and to make and to exchange with the dry friction disk type braker of using always now with comparalive ease according to break of the present invention.
With regard to the friction material product, must recognize, in aforementioned international patent application, friction material need be provided with the frizing discharge channel of holding concurrently, so that liquid can be removed from braking surface, still, have been found that concerning braking ability determining of the Position Approximate of these grooves is important.In addition, have been found that optimum performance normally between the width of groove and number with respect to the remaining friction surface zone between groove or the balance of ground interband.That is to say, must stay enough land area, to reach desired braking characteristic." preceding " or " tail " or similar speech used in whole specification are all relevant with the sense of rotation of rotating disk with brake slipper.
According to first aspect of the present invention, a kind of brake slipper that comprises the friction material with braking surface is provided, this braking surface contacts with the rotating disk of brake components in use, above-mentioned braking surface has a leading edge with respect to the rotation of above-mentioned rotating disk, one relative trailing edge and outer rim and the inner edge that are connected above-mentioned leading edge and trailing edge along extending circumferentially, above-mentioned friction material further comprises a plurality of grooves that form in above-mentioned friction material, above-mentioned groove leads to above-mentioned braking surface and with respect to the front end of a radial alignment and groove backward at angle, have an above-mentioned front end that has the leading edge of leading to above-mentioned braking surface and leave above-mentioned friction material at above-mentioned trailing edge or above-mentioned outer periphery place in the above-mentioned groove at least, above-mentioned groove above-mentioned at least one the mouth shape part widened and one is arranged from zone that the above-mentioned leading edge width of braking surface inwardly successively decreases at the leading edge place of above-mentioned braking surface.Proper is that leading edge is radially arranged in use basically.For the ease of making, trailing edge also can radially be arranged in use.Preferably, have at least two to be provided with a front end that leads to the friction material leading edge in the above-mentioned groove.Proper is, each the above-mentioned groove with the front end that leads to leading edge has from zone that above-mentioned width successively decreases to it and leaves the width uniformly basically of friction material.Proper is, along the length of brake slipper, to the tail edge, is provided with spaced-apart a plurality of above-mentioned groove from leading edge, and above-mentioned groove separates equidistantly.In preferred a layout, the front end edge of groove with the front end at the leading edge rear that is positioned at brake slipper radially is positioned at outside the inner circumference edge of friction material, and each of these grooves all has the outer periphery of leading to the brake slipper friction material or the tail end of trailing edge.In one second preferred the layout, the front end of groove of front end with leading edge rear of the friction material that is positioned at brake slipper all is placed to the inner circumference edge that leads to friction material.Proper is, when looking perpendicular to braking surface, each groove is all parallel to each other basically and crooked, and its curvature will be made the protrusion side that the makes groove leading edge towards friction material.
By arranging that the resulting benefit of groove that one or more leading edges from the brake slipper friction material begin and preferably finish from outer periphery is, the liquid that can be improved leaves flowing of braking surface district, thereby obtain an improved braking ability, especially the braking ability when hanging down clamping pressure.Usually think all that when the radial distance of distance spin axis strengthens, the oil mass on the rotating disk will increase.Like this, when leading edge was radially arranged basically, there was the shortest groove in the zone with maximum liquid absolute altitude (promptly leave spin axis at a distance), so liquid can flow more hurry up, so that the liquid volume of any increase can be by short path or groove balance.If groove is obstructed to inner circumference edge, then its wearing and tearing particle may be deposited on this edge by centrifugal force, and makes the scratch of rotating disk braking surface.It's the working life that this edge can be eliminated the rotating disk scratch and improve brake components allow to past flow of liquid, make braking that predictability is more arranged simultaneously.
According to another aspect of the present invention, a kind of brake slipper that comprises the friction material with braking surface is provided, this braking surface is suitable for contacting with the rotating disk of brake components in use, above-mentioned braking surface has a leading edge with respect to the rotation of above-mentioned rotating disk, one relative trailing edge and outer rim and the inner edge that are connected above-mentioned leading edge and trailing edge along extending circumferentially, above-mentioned friction material further comprises a plurality of grooves that form in above-mentioned friction material, above-mentioned groove leads to above-mentioned braking surface, and backward at angle with respect to the front end of radial alignment and groove, in the above-mentioned groove at least one led to the leading edge of above-mentioned braking surface, above-mentioned groove also further from its front end to its tail end bending, and with the protrusion side of above-mentioned groove leading edge towards braking surface, look from the direction perpendicular to braking surface, above-mentioned groove also generally forms a circular arc.Proper is that groove forms the angle that equates basically at the tangent line of entrance point and outlet end with inner circumference edge and outer periphery.Groove is preferably substantially parallel.Preferably there is a angle between 30 ° to 40 ° at the aforementioned angle that equates basically.Proper is that this angle is about 35 °.Best, all grooves all make its entry end on the leading edge or inner circumference edge of friction material, and make its outlet end on the outer periphery or trailing edge of friction material.
According to a particularly preferred embodiment, brake slipper has a plurality of main lines with one or more counter drain grooves that form as previously mentioned, and counter drain groove and main line intersect acute angle.Proper is that the counter drain groove is opened its entry end on the leading edge of friction material.Proper is, will partly remove the friction material between the entry end of leading edge place main line and counter drain groove at least, to form the mouth shape zone that a width successively decreases during near first intersection point between main line and the counter drain groove at it.Proper is, aforementioned first intersection point has a throat, and its width is greater than the width that is formed by the intersection point between main line and counter drain groove.
The width of aforementioned main line is preferably 1.5～4mm, is preferably 2mm.Proper is, after forming groove, the area of remaining friction material piston ring land be do not have groove the braking surface area 60%～80%.Land area preferably is about does not have about 75% of the braking surface of groove area.Proper is, the land width between the main line is about 5～6mm, and its guarantees to have enough mechanical strengths.
According to another aspect of the present invention, provide a kind of vehicle braked device that is used for to arrange, it is suitable for being connected with an axle head, above-mentioned layout comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases above-mentioned rotating disk and has the set casing of one or more sealings, so that a distinct area basically to be provided, this zone surrounds a braking action district of above-mentioned rotating disk at least, in above-mentioned braking action district, the place adjacent with the braking surface of above-mentioned rotating disk has a brake pad at least, when carrying out car brakeing with box lunch, engage with making this brake pad and above-mentioned braking surface operability, a charging device also is provided in addition, with with at least a portion filling of above-mentioned distinct area basically with liquid medium, the characteristics that above-mentioned break is arranged are, above-mentioned braking surface is radially arranged, it is shaped as the annular with inner circumference edge and outer periphery, inner circumference edge defines a liquid collection region along extending circumferentially, be suitable for the liquid that outwards moves on the above-mentioned disc surfaces of interior collection at inner circumference edge and at least one passage outwardly, this passage leads to the outer periphery of above-mentioned rotating disk from the aforesaid liquid collecting area.
Proper is that the aforesaid liquid collecting area is positioned at the inside of the cantilever lip of the inner circumference edge that forms braking surface vertically.A plurality of above-mentioned passages that above-mentioned rotary case radially leads to the outside that pass preferably are set.Proper is that relative annular stop face radially is set in the both sides of rotating disk.
According to a further aspect of the invention, provide a kind of vehicle braked device that is used for to arrange, it is suitable for being connected with an axle head, above-mentioned layout comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases above-mentioned rotating disk and has the static housing of one or more sealings, so that a distinct area basically to be provided, this zone surrounds the braking action district of above-mentioned rotating disk at least, in above-mentioned braking action district, in the place adjacent at least one brake pad is arranged with the braking surface of above-mentioned rotating disk, thus when carrying out vehicle breaking operation, this brake pad is operationally engaged with above-mentioned braking surface, a charging device also is provided in addition, with with at least a portion filling of above-mentioned distinct area basically with liquid medium, the characteristics that above-mentioned break is arranged are, change the temperature of the aforesaid liquid medium in above-mentioned shell by heat-exchange device, thereby said temperature is remained in the predetermined scope.
According to a further aspect of the invention, the invention provides a kind of rotating disk that is used in the vehicle brake parts, this brake components contains the liquid that above-mentioned rotating disk therefrom passes through in use, the characteristics of above-mentioned rotating disk are, the annular stop mask of at least one radial arrangement have radially inner circumference edge and outer periphery radially, inner circumference edge defines a liquid collection region along extending circumferentially, be suitable for collecting the liquid that outwards moves on the above-mentioned disc surfaces within inner circumference edge and at least one passage outwardly, this passage leads to the outer periphery of above-mentioned rotating disk from the aforesaid liquid collecting area.
Adopt above-mentioned break to arrange, can realize, when needs carry out brake operating, make the liquid near the braking surface of brake pad be kept to minimum.
According to another aspect of the present invention, provide a kind of vehicle braked device that is used for to arrange, it is suitable for linking to each other with an axle head, above-mentioned layout comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases above-mentioned rotating disk and has the static housing of one or more sealings, in at least a portion of above-mentioned static housing, to form a zone that seals basically, like this, a braking action district of above-mentioned at least rotating disk is in use by the above-mentioned zone of sealing basically, in above-mentioned braking action district, have at least a brake pad be positioned at above-mentioned rotating disk a braking surface near, so that when carrying out vehicle breaking operation, operationally engage with above-mentioned braking surface, a charging device also is provided in addition, with with at least a portion filling in the zone of above-mentioned basic sealing with liquid medium, the characteristics that above-mentioned break is arranged are, it has filtrating equipment, to remove the friction material particle from aforesaid liquid at least near the place that above-mentioned each brake pad combines with above-mentioned braking surface.Proper is that above-mentioned filtrating equipment comprises the spacing means of the lower area that is arranged in static housing, its shape is made can be captured and keep above-mentioned friction material particle.Adopt above-mentioned layout, near the liquid the brake pad can keep clean, and is not easy to be speckled with the film pollution disc surfaces of abrasion chip, thereby guarantees uniform braking ability.
According to another aspect, the invention provides a kind of vehicle braked device that is used for arranges, it is suitable for linking to each other with an axle head, above-mentioned layout comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases above-mentioned rotating disk and has the static housing of one or more sealings, in at least a portion of above-mentioned static housing, to form a zone that seals basically, like this, the braking action district of above-mentioned at least rotating disk is the zone by above-mentioned basic sealing in use, in above-mentioned braking action district, have at least a brake pad be positioned at above-mentioned rotating disk a braking surface near, so that when carrying out vehicle breaking operation, operationally engage with above-mentioned braking surface, above-mentioned static housing contains liquid medium in the zone of above-mentioned basic sealing at least, the characteristics that above-mentioned break is arranged are that the aforesaid liquid medium has in the time of 100 ℃ less than 7cst (mm
2/ s) viscosity.The aforesaid liquid medium preferably has in the time of 100 ℃ at 2～5cst (mm
2/ s) the viscosity in the scope.The aforesaid liquid medium preferably has between 135 to 145, is preferably the viscosity index about 140, and like this, the variation that the variation of viscosity with temperature can be taken place reduces to minimum.Utilize light viscosity oil and preferred low viscosity synthetic mineral oil to be inhibited for making the fluid mechanics lubrication, help mixed lubricating state as the advantage of liquid medium.Mixed lubricating state can provide than the lubricated much higher frictional strength of fluid mechanics, causes the performance of break to be improved.Brake components can make brake pad partly by the work of oil stripping (oilstripping) pattern, partly by the oily pattern work of shearing, thereby heavy oil film situation and ultra-thin oil film combinations of states is got up.Brake pad to the frizing of the very high activating pressure of disk, brake pad, make groove and ultralow lubricant viscosity gang, the generation mixed oil film is lubricated, it makes, and fluid mechanics is lubricated to be suppressed, and helps the lubricated and boundary lubrication condition of micro-elasticity fluid mechanics that rubs higher.
Describe several embodiments of the present invention below with reference to the accompanying drawings, these accompanying drawings are:
Fig. 1 is the planimetric map that can be used on the preferred form of the rotating disk in the brake structural according to of the present invention;
Figure 1A is the partial sectional view of brake components shell, and it shows preferred feature of the present invention;
Figure 1B is the sectional view of getting along the C-C line of Figure 1A;
Fig. 2 is the sectional view along the X-X line of Fig. 1, and it also shows a kind of possible preferred form of filtrating equipment;
Fig. 3 is the braking block structured planimetric map of first preferred embodiment;
Fig. 4 is the planimetric map similar to Fig. 3, shows second preferred embodiment;
Fig. 5 is the sectional view along the A-A line of Fig. 3 or 4;
Fig. 6 is the planimetric map similar to previous drawings, shows the 3rd preferred embodiment of brake slipper;
Fig. 7 is the planimetric map similar to previous drawings, shows the 4th preferred embodiment of brake slipper;
Fig. 8 is the planimetric map similar to Fig. 7, shows another possible embodiment;
Fig. 9 is the planimetric map similar to Fig. 8, shows a possible embodiment again;
Figure 10 is the sectional view of getting along the B-B line of Fig. 8 or 10; With
Figure 11 is a plotted curve, show the relation of stopping distance with the brake pad pressure that is acted on of the vehicle that travels with 100km/h, it will be contrasted to the brake pad of the no groove of making other similar configuration according to the brake pad of fluted immersion liquid of the present invention.
Referring now to Fig. 1 and 2,, it shows one and is suitable for being fixed on rotating disk 50 on the vehicle axle head by any suitable device.This rotating disk has also relative circlewise braking surface 51,52 radially.One static shell 53 (only illustrating partly in Fig. 2) defines the braking action district 54 of an encirclement braking surface 51,52 that seals basically, and this brake function district is formed by unshowned sealing.Shell 53 contains the liquid as the light viscosity oil in use.Advise that in PCT/AU92/00540 oil mass should be many, but have been found that now this is unnecessary, and best, and all liquid that need are enough to keep sealing moistening in use, just with splashing or similar approach.Have been found that vertical height 1/4th enough of about brake components.Be used for the brake slipper that engages with relative braking surface 51,52 the location can by (approximately locate) shown in the label 67,68 to half of the height of brake components or be arranged in otherwise above 1/4th districts 80,81 (Fig. 1).
As illustrated in fig. 1 and 2, the interior radially bead 55 of braking surface 51,52 preferably has undercut, forms circumferential liquid collection region 56,57, to be collected on the surface within the bead 55 flowing liquid eccentrically.Then, this liquid that is collected radial passage 58 of can flowing through makes the amount of liquid on the surface 51,52 be kept to minimum.
Usually all wish to make the amount of liquid on the interface between the braking surface of the braking surface of rotating disk and brake pad to be kept to minimum.The front is said proper in this respect.Other factors is included in and adopts light viscosity oil as liquid in the shell, because keep low viscosity to make low friction factor is arranged between brake component when not applying braking force, but allow high friction factor when applying braking force on brake slipper during braking.Though viscosity is up to the oil of ISO15 in the time of can adopting 40 ℃, the still employing of comparative optimization can provide the oil in ISO3 to ISO7 scope of improved performance.More more specifically, have viscosity in the time of 100 ℃ less than 7 (best 2～5) cst (mm
2/ s) synthetic mineral oil is best.The shortcoming of the ultra-low viscosity oil as 2cst that the past adopts is that traditional ultra-low viscosity oil has high volatility and low flash-point.Now, this problem is by so-called oil based on synthetic mineral oil, is superhigh viscosity index oil as the trade mark of the Shell Oil Company, i.e. XHVII and XHVIII oil and solving.These oil can provide such flash-point and volatility, thus they can be in existing braking system owing to ultra-low viscosity that it had is used, but do not have the problem of flash-point and volatility aspect.
All understand very much, oil viscosity is that the reduction with temperature increases, and reduces with the rising of temperature.For overcome those may be along with the operation of (heat or cold) under harsh temperatures the problem that produces, suggestion as illustrated in fig. 1 and 2, installing one heat exchanger 70 in the oil of brake shell.Heat exchanger 70 can pass through water by being used to carry the metal tube (as Stainless Steel Tube) of engine cooling water (being about 50 ℃ usually) to make from pipe, with the oil in the heating shell when essential.Suitable valve and temperature transducer can be set, so that this kind heating efficiency only just is provided in the time need keeping the oily temperature in the brake components in allowed limits.If in the environment of extreme heat, use brake components, also may need to carry cooling liquid by heat exchanger 70.This liquid can be by any suitable device, comprise such as may be contained on the vehicle air-conditioning equipment or according to certain purposes and the cooling of intrinsic device.Need heat exchanger 70 to form if having with the passage of casting in the brake components shell.
Because brake components seals, the wearing and tearing particle that falls down from brake slipper and rotating disk will be retained in the shell.This particle that is included in the oil can produce the coated membrane of wearing and tearing particle/oil on the rotating disk braking surface, and can cause very bad braking characteristic.Therefore, wish to remove this broken drawing from the fitting surface zone of brake slipper and rotating disk at least.Light viscosity oil also more can be more easily than heavy oil and this wearing and tearing particle is precipitated out.
The level that can the wearing and tearing particle of brake slipper be separated to effectively permission acceptance by the gravity settling and the whole centrifugation technique of integral body.Therefore, shell 53 can comprise one or several " mud chamber " 59 in the oil sump of brake shell.Mud chamber 59 can cast in inner housing or housing parts 60,61, or is formed by the wall shape member 62,63 that is fixed by bolts on the housing parts at label 64 places.If desired, the root edge of wall shape member 62,63 can be sealed on the bottom wall surface of corresponding housing parts by being provided with through sunk part mach or casting.Also can use magnet plug 65,66 that metal granule is sucked in the mud chamber 59, simultaneously, when taking off magnet plug, the wearing and tearing particle can be removed from these mud chambers and needn't discard most of oil.If the mud chamber passes through to select its position, make it consistent and the oil stream formation forced flow with the oil extraction groove of brake slipper, then each chamber will remain and be full of oil, and when brake disc is rotating, one slowly still continuous oil stream will be arranged through the mud chamber.When rotating disk stops or rotating, according to the use pattern of break, various the time, the most of oil in the oil sump all will be trapped in the mud chamber.
Under flow through the situation of mud chamber 59 in " slowly ", bigger and heavier particle is collected.Such as spend the night or other idle grade during, when rotating disk was motionless, the gravitational settling of brake pads wear particle was proceeded, particularly those if not will be with the fine grained of state of suspension stop.In order further to promote the delay of wearing and tearing particle, can comprise one or more spacing blocks 69 of using material to do in the chamber 59 as the steel wool.After using break, break does not experience one clocklike under the situation of lay-up period, can contain the oil of the particle that wear and tear with an intrinsic or external pump circulation, makes it to pass through external filter.This layout also can be included in the member that cools off or heat waste oil in the purification process simultaneously.
Referring now to Figure 1A and 1B,, they show the bottom of brake shell 53.In each side of shell 53, just above liquid medium surface line 86, be provided with a pair of baffle plate 82,83 and 84,85.Each baffle plate 82,83,84,85 to be arranged to make minimum interval is arranged between baffle plate and the rotating disk braking surface 51,52, thereby the major part that makes liquid medium is splashed and is kept to minimumly, or the liquid medium that is forced into the upper area of shell 53 of the effect by rotating disk 50 is minimum in use.In addition, each bolt installation base 88 with the hole 90 that is used to admit the bolt 87 that housing parts 60,61 is fixed together is provided with at least one curved surface 89, to be used for facilitating turbulent-flow conditions at liquid medium when using brake components.
Referring now to Fig. 3 to 10 friction block structured several preferred embodiments is described.These brake pads can be positioned at for example 67 and 68 places in the break layout shown in Fig. 1 and 2, they can be operated with any known traditional executive system.At first referring to Fig. 3, brake slipper 10 comprises that one has the base plate 11 of conventional configuration and friction material 12 fixed thereon.Friction material 12 has a leading edge 13, a trailing edge 14, an inner circumference edge 15 and outer periphery 16.Be formed with a plurality of main lines 17 on friction material, its outlet end 18 leads to outer periphery 16 or trailing edge 14.Have the entry end 19 of many main lines 17 to be located immediately at leading edge 13 places, each in these entry ends 19 all has the mouth shape district 20 that width successively decreases, and is used for the liquid stream aggregation is entered groove 17.This structure provides a kind of efficient apparatus of collecting and remove the big quantity of fluid on the braking surface that engages one another in brake operation course.Groove 17 after leaning in above-mentioned one group of groove has the entry end 21 that is positioned at inner circumference edge 15 outsides, can form the sealing platform 22 of a friction material like this as discussing in this specification previous section.Each groove 17 wide 1.5 to 4mm also has the halfpace 14 of wide about a 5～6mm.Proper is that each groove all is straight and parallel to each other.Fig. 4 shows an improvement of configuration shown in Figure 3, wherein is provided with counter drain groove 25, and each counter drain groove and main line 17 form an acute angle.Proper is that the entry end of some counter drain groove 25 overlaps with the entry end of a main line 17 at leading edge 13 places at least.If necessary, also the throat region of this intersection point can be enlarged, to improve the type of flow of liquid.
Referring now to Fig. 6 to 10, embodiment describes.In Fig. 6, the setting of main line 17 is similar to the embodiment of Fig. 3, and just to the outlet end bending, and the entry end of each groove 17 all leads to the edge of friction material 12 to groove from its entry end.Be conveniently, the curvature and the circular arc of each groove are approaching, and simultaneously, the radius of curvature of each groove equates basically.Be conveniently, each groove 17 is parallel to each other.In addition, wish all this grooves all to be equated basically that this angle [alpha] is the angle between the tangent line of the curve at the tangent line of the groove curve at inlet 26 places and edge 15 in the angle [alpha] at inlet 26 places of each groove 17 that leads to inner circumference edge 15.In addition, at the outlet end of the groove that leads to outer periphery 16, this angle also equates with same angle basically.Proper is that this angle can be 20 °～40 °, but is preferably about 30 °, and is for the road speeds limit conventional wheel that promptly 100～110km/h travels that allows, desired when it is the generation optimum performance for initial.This is about 800～1000rpm corresponding to rotary speed.
Fig. 7 and 8 embodiment have comprised counter drain groove 27, and each counter drain groove all acutangulates crossing with main line 17.Counter drain groove can be as shown in the figure crooked or can be in line extension as shown in Figure 5.In addition, counter drain groove 27 can pass all friction materials as shown in Figure 7 basically, or as shown in Figure 8 in the middle of itself and certain intersection of main line 17 stop.
Proper is, in each case, the main line that leads to the leading edge 13 of friction material has the mouth shape district 28 with wider portion, and this district 28 is convenient to make concentrated liquid to flow in the adjacent grooves 17.The radially inner wall of groove 17 is preferably formed as the wall 29 with the mouth shape district that widens.As shown in Figure 8, groove 17 and 27 the throat 30 of the intersection point in mouth shape district can be by for example removing with dashed lines 31 expressions the mode of friction material widened, thereby the inflow of two grooves 17 that improve that liquid extends to throat from then on and 27.
Fig. 9 shows along the sectional view of the B-B line of Fig. 8 and 10.Figure 10 shows the embodiment similar to Fig. 9, and just groove 17 is widelyer spaced-apart towards the tail end of load.
The plotted curve of Figure 11 illustrates the vehicle stopping distance of 2.5 tons of Toyota's go-anywhere vehicles that adopt foregoing wet disc brake and the relation of retardation pressure, and it is with the brake slipper of open channels and the brake slipper of producing according to configuration shown in Figure 8 are not contrasted herein.From then on can find out that braking system has particularly surpassed the brake slipper of the similar not open channels of other configuration according to the performance of brake slipper of the present invention in relatively significantly.
Claims (25)
1. brake slipper that comprises friction material with a braking surface, this braking surface contacts with the rotating disk of brake components in use, above-mentioned braking surface has a leading edge with respect to the rotation of above-mentioned rotating disk, one relative trailing edge and outer rim and the inner edge that are connected above-mentioned leading edge and trailing edge along extending circumferentially, above-mentioned friction material further comprises a plurality of grooves that form in above-mentioned friction material, above-mentioned groove leads to above-mentioned braking surface and with respect to the front end of a radial alignment and groove backward at angle, in the above-mentioned groove at least one has one to pass to the leading edge of above-mentioned braking surface and end at the above-mentioned front end of above-mentioned friction material at above-mentioned trailing edge or above-mentioned outer periphery place, and at least one in the above-mentioned groove has the mouth shape part of widening and its width arranged from zone that the above-mentioned leading edge of braking surface is inwardly successively decreased at the leading edge place of above-mentioned braking surface.
2. brake slipper as claimed in claim 1, it is characterized by, a plurality of above-mentioned grooves have the front end of the leading edge that passes to above-mentioned braking surface, and each above-mentioned groove has the above-mentioned mouthful shape part of widening at the leading edge place, and above-mentioned its width are arranged from zone that the above-mentioned leading edge of braking surface is inwardly successively decreased.
3. a brake slipper as claimed in claim 1 or 2 is characterized by, and some above-mentioned groove has from the inside spaced-apart front end of the above-mentioned inner circumference edge of above-mentioned braking surface.
4. a brake slipper as claimed in claim 1 or 2 is characterized by, and some above-mentioned groove has the front end of the above-mentioned inner circumference edge that passes to above-mentioned braking surface.
5. one kind as any one the described brake slipper in the claim 1 to 4, it is characterized by, and above-mentioned groove is parallel to each other basically.
6. one kind as any one the described brake slipper in the claim 1 to 5, it is characterized by, and above-mentioned groove is straight basically.
7. one kind as any one the described brake slipper in the claim 1 to 5, it is characterized by, and each above-mentioned groove is crooked from its front end to tail end, and the convex side of groove is towards the leading edge of braking surface.
8. a brake slipper as claimed in claim 7 is characterized by, and when when looking perpendicular to the direction of braking surface, above-mentioned each groove forms a circular arc basically.
9. brake slipper that comprises friction material with a braking surface, this braking surface contacts with the rotating disk of brake components in use, above-mentioned braking surface has a leading edge with respect to the rotation of above-mentioned rotating disk, one relative trailing edge and outer rim and the inner edge that are connected above-mentioned leading edge and trailing edge along extending circumferentially, above-mentioned friction material further comprises a plurality of grooves that form in above-mentioned friction material, above-mentioned groove passes to above-mentioned braking surface, and backward at angle with respect to the front end of a radial alignment and groove, in the above-mentioned groove at least one passes to the leading edge of above-mentioned braking surface, above-mentioned groove further from its front end to its tail end bending, and with the protrusion side of above-mentioned groove leading edge towards braking surface, when when the direction of vertical sensing braking surface is looked, above-mentioned groove also generally forms the circular arc of a circle.
10. brake slipper as claimed in claim 9, it is characterized by, at least some above-mentioned groove has the tail end that a front end and that passes to the inner circumference edge of braking surface passes to the outer periphery of braking surface, the shape of groove is configured to make the formed angle of inner circumference edge of the tangent line of ditch front of the slot and braking surface to equal the formed angle of outer periphery of the tangent line and the braking surface of groove tail end.
11. one kind as claim 9 or 10 described brake slipper, it is characterized by, above-mentioned groove is parallel to each other basically.
12. a brake slipper as claimed in claim 10 is characterized by, above-mentioned equal angle is 30 °～40 °.
13. one kind as any one the described brake slipper in the claim 1 to 12, it is characterized by, the width of each above-mentioned groove 1.5 and 4mm between.
14. one kind as any one the described brake slipper in the claim 1 to 13, it is characterized by, groove occupies does not have 20%～40% of the braking surface of above-mentioned groove area.
15. one kind as any one the described brake slipper in the claim 1 to 14, it is characterized by, the width of the braking surface between the above-mentioned adjacent trenches is 5～6mm.
16. brake slipper that comprises friction material with a braking surface, this braking surface contacts with the rotating disk of brake components in use, above-mentioned braking surface has a leading edge with respect to the rotation of above-mentioned rotating disk, one relative trailing edge and outer rim and the inner edge that are connected above-mentioned leading edge and trailing edge along extending circumferentially, above-mentioned friction material further is included in a plurality of main lines and a plurality of counter drain groove that forms in the above-mentioned friction material, above-mentioned groove leads to above-mentioned braking surface, each above-mentioned groove with respect to the front end of a radial alignment and groove backward at angle, the shape of above-mentioned counter drain groove and above-mentioned main line will so constitute so that intersect with acute angle each other, and has at least an above-mentioned main line or above-mentioned counter drain groove to pass to the leading edge of above-mentioned braking surface.
17. brake slipper as claimed in claim 16, it is characterized by, at least to partly remove the friction material between the above-mentioned counter drain groove of above-mentioned leading edge that an above-mentioned main line and passes to braking surface, to form a mouth shape zone of widening, when this mouthful shape zone during near first intersection point of main line and counter drain groove, its width successively decreases.
18. a brake slipper as claimed in claim 17 is characterized by, each first above-mentioned intersection point has a throat, and its width is greater than throat's width in the place that is coupled together by the intersection point of main line and counter drain groove.
19. one kind is suitable for the brake gear that is connected with the axle head of a vehicle, said apparatus comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases above-mentioned rotating disk and one or more sealings are arranged, so that the static housing of distinct area basically to be provided, described zone surrounds the braking action district of above-mentioned rotating disk at least, place adjacent with the braking surface of above-mentioned rotating disk in above-mentioned braking action district has a brake pad at least, thus when carrying out vehicle breaking operation, this brake pad operationally engages with above-mentioned braking surface, a charging device also is provided in addition, with with at least a portion filling of above-mentioned distinct area basically with liquid medium, being characterized as of above-mentioned brake gear, it has heat-exchange device, with the temperature of the aforesaid liquid medium of change in above-mentioned shell, thereby said temperature is remained in the predetermined scope.
20. brake gear as claimed in claim 19, it is characterized by, brake pad or the brake pad that each is above-mentioned comprise the friction material with a braking surface, this braking surface has a leading edge with respect to the rotation of above-mentioned rotating disk, one relative trailing edge and the circumferential inner edge and the outer rim that are connected above-mentioned leading edge and trailing edge, above-mentioned friction material further comprises a plurality of grooves that form in above-mentioned friction material, above-mentioned groove passes to above-mentioned braking surface, above-mentioned groove and has at least an above-mentioned groove to have the tail end of above-mentioned outer periphery that a front end and that passes to the leading edge of above-mentioned braking surface passes to the above-mentioned trailing edge of above-mentioned braking surface with respect to a radial alignment backward at angle.
21. rotating disk that is used in the vehicle brake parts, this brake components contains the liquid medium that above-mentioned rotating disk therefrom passes through in use, being characterized as of above-mentioned rotating disk, the annular stop mask that at least one is disposed radially has radially inner circumference edge and outer periphery radially, inner circumference edge defines a liquid collection region along extending circumferentially, be used to be collected in the liquid that outwards moves on the inherent above-mentioned disc surfaces of inner circumference edge, and at least one passage outwardly leads to the outer periphery of above-mentioned rotating disk from the aforesaid liquid collecting area.
22. brake components that comprises rotating disk as claimed in claim 21.
23. one kind is used for the vehicle braked apparatus, it is suitable for linking to each other with an axle head, said apparatus comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases the static housing of above-mentioned rotating disk, this shell has one or more sealings, in at least a portion of above-mentioned static housing, to form a zone that seals basically, like this, the braking action district of above-mentioned at least rotating disk is in use by the above-mentioned zone of sealing basically, in above-mentioned braking action district, have at least a brake pad to be positioned near the braking surface of above-mentioned rotating disk, so that when carrying out vehicle breaking operation, operationally engage with above-mentioned braking surface, a charging device also is provided in addition, with with at least a portion filling in zone of above-mentioned sealing basically with liquid medium, being characterized as of above-mentioned brake gear, it has filtrating equipment, to remove the friction material particle from aforesaid liquid at least near place above-mentioned or that each above-mentioned brake pad engages with above-mentioned braking surface.
24. a brake gear as claimed in claim 23 is characterized by, above-mentioned filtrating equipment comprises the spacing means of the lower area that is arranged in static housing, its shape is made the particle that can capture and keep above-mentioned friction material.
25. one kind is used for the vehicle braked apparatus, it is suitable for linking to each other with an axle head, said apparatus comprises that a single rotating disk and that rotates with above-mentioned axle head in use encases the static housing of above-mentioned rotating disk, this shell has one or more sealings, in at least a portion of above-mentioned static housing, to form a zone that seals basically, like this, the braking action district of above-mentioned at least rotating disk is in use by the above-mentioned zone of sealing basically, in above-mentioned braking district, have at least a brake pad be positioned at above-mentioned rotating disk a braking surface near, so that when carrying out vehicle breaking operation, operationally engage with above-mentioned braking surface, above-mentioned static housing contains liquid medium in the above-mentioned zone of sealing basically at least, being characterized as of above-mentioned braking device, aforesaid liquid medium have one in the time of 100 ℃ less than 7cst (mm
2/ s) viscosity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPM7720 | 1994-08-26 | ||
| AUPM7720A AUPM772094A0 (en) | 1994-08-26 | 1994-08-26 | Wet disc brake |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00135373A Division CN1106511C (en) | 1994-08-26 | 2000-12-15 | Wet disk type brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1159850A true CN1159850A (en) | 1997-09-17 |
| CN1081762C CN1081762C (en) | 2002-03-27 |
Family
ID=3782241
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95195521A Expired - Fee Related CN1081762C (en) | 1994-08-26 | 1995-08-24 | Wet disc Brake |
| CN00135373A Expired - Fee Related CN1106511C (en) | 1994-08-26 | 2000-12-15 | Wet disk type brake |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00135373A Expired - Fee Related CN1106511C (en) | 1994-08-26 | 2000-12-15 | Wet disk type brake |
Country Status (7)
| Country | Link |
|---|---|
| CN (2) | CN1081762C (en) |
| AU (1) | AUPM772094A0 (en) |
| ES (1) | ES2179883T3 (en) |
| MY (1) | MY114893A (en) |
| NZ (1) | NZ334737A (en) |
| PT (1) | PT776429E (en) |
| ZA (1) | ZA957160B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162498A (en) * | 2010-02-22 | 2011-08-24 | 瓦莱奥摩擦材料公司 | Dry friction lining for clutch |
| CN102954136A (en) * | 2011-08-31 | 2013-03-06 | 昆山新力精密五金有限公司 | Novel disc type brake pad |
| CN103322089A (en) * | 2013-06-03 | 2013-09-25 | 芜湖东正汽车工业有限公司 | Multi-working-condition heat dissipation type brake pad |
| CN103742578A (en) * | 2013-12-25 | 2014-04-23 | 柳州正菱集团有限公司 | Brake pad |
| CN103883653A (en) * | 2014-02-07 | 2014-06-25 | 江苏恒力制动器制造有限公司 | Brake pad for disc brake |
| CN102162498B (en) * | 2010-02-22 | 2016-12-14 | 瓦莱奥摩擦材料公司 | Dry friction lining for clutch |
| CN107076301A (en) * | 2014-10-17 | 2017-08-18 | 洋马株式会社 | Steering operation mechanism |
| CN109356952A (en) * | 2018-10-26 | 2019-02-19 | 佛山职业技术学院 | A kind of drum brake cooling device |
| CN111989557A (en) * | 2018-04-20 | 2020-11-24 | 曙制动器工业株式会社 | Abrasion powder collecting device, analysis system, abrasion powder collecting method, and analysis method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098436A (en) * | 2012-11-14 | 2014-05-29 | Jtekt Corp | Clutch plate, clutch device, and driving force transmitting device |
| CN103591198B (en) * | 2013-10-21 | 2016-03-02 | 芜湖东正汽车工业有限公司 | A kind of Multi-working-conditwear-resistant wear-resistant brake pad |
| WO2015068183A1 (en) * | 2013-11-05 | 2015-05-14 | 三菱電機株式会社 | Brake device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2924308A (en) * | 1956-01-23 | 1960-02-09 | Gen Motors Corp | Brake cooling system |
| US3405786A (en) * | 1967-06-09 | 1968-10-15 | Robert W. Goode | Fluid pressure control for brake mechanism with cooling means |
| DE4036908A1 (en) * | 1990-11-20 | 1992-05-21 | Ruetgers Pagid Ag | GROOVE TRAINING |
| DK0607248T3 (en) * | 1991-10-11 | 1999-08-30 | Technologies Pty Ltd Brake | Wet disc brake |
-
1994
- 1994-08-26 AU AUPM7720A patent/AUPM772094A0/en not_active Abandoned
-
1995
- 1995-08-24 NZ NZ334737A patent/NZ334737A/en unknown
- 1995-08-24 CN CN95195521A patent/CN1081762C/en not_active Expired - Fee Related
- 1995-08-24 ES ES95929648T patent/ES2179883T3/en not_active Expired - Lifetime
- 1995-08-24 PT PT95929648T patent/PT776429E/en unknown
- 1995-08-25 ZA ZA957160A patent/ZA957160B/en unknown
- 1995-08-25 MY MYPI95002528A patent/MY114893A/en unknown
-
2000
- 2000-12-15 CN CN00135373A patent/CN1106511C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162498A (en) * | 2010-02-22 | 2011-08-24 | 瓦莱奥摩擦材料公司 | Dry friction lining for clutch |
| CN102162498B (en) * | 2010-02-22 | 2016-12-14 | 瓦莱奥摩擦材料公司 | Dry friction lining for clutch |
| CN102954136A (en) * | 2011-08-31 | 2013-03-06 | 昆山新力精密五金有限公司 | Novel disc type brake pad |
| CN103322089A (en) * | 2013-06-03 | 2013-09-25 | 芜湖东正汽车工业有限公司 | Multi-working-condition heat dissipation type brake pad |
| CN103322089B (en) * | 2013-06-03 | 2015-12-23 | 芜湖东正汽车工业有限公司 | A kind of Multi-working-conditheat heat dissipation type brake pad |
| CN103742578A (en) * | 2013-12-25 | 2014-04-23 | 柳州正菱集团有限公司 | Brake pad |
| CN103883653B (en) * | 2014-02-07 | 2016-06-15 | 江苏恒力制动器制造有限公司 | A kind of brake block for disk brake |
| CN103883653A (en) * | 2014-02-07 | 2014-06-25 | 江苏恒力制动器制造有限公司 | Brake pad for disc brake |
| CN107076301A (en) * | 2014-10-17 | 2017-08-18 | 洋马株式会社 | Steering operation mechanism |
| CN107076301B (en) * | 2014-10-17 | 2019-02-15 | 洋马株式会社 | Steering operation mechanism |
| CN111989557A (en) * | 2018-04-20 | 2020-11-24 | 曙制动器工业株式会社 | Abrasion powder collecting device, analysis system, abrasion powder collecting method, and analysis method |
| CN111989557B (en) * | 2018-04-20 | 2024-04-19 | 曙制动器工业株式会社 | Abrasion powder trapping device, analysis system, abrasion powder trapping method and analysis method |
| CN109356952A (en) * | 2018-10-26 | 2019-02-19 | 佛山职业技术学院 | A kind of drum brake cooling device |
| CN109356952B (en) * | 2018-10-26 | 2024-03-19 | 佛山职业技术学院 | Drum brake cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1309249A (en) | 2001-08-22 |
| ZA957160B (en) | 1996-04-17 |
| NZ334737A (en) | 2000-09-29 |
| CN1081762C (en) | 2002-03-27 |
| AUPM772094A0 (en) | 1994-09-22 |
| ES2179883T3 (en) | 2003-02-01 |
| MY114893A (en) | 2003-02-28 |
| PT776429E (en) | 2002-11-29 |
| CN1106511C (en) | 2003-04-23 |
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