CN105545990A - Braking mechanism for automobile - Google Patents
Braking mechanism for automobile Download PDFInfo
- Publication number
- CN105545990A CN105545990A CN201610042461.4A CN201610042461A CN105545990A CN 105545990 A CN105545990 A CN 105545990A CN 201610042461 A CN201610042461 A CN 201610042461A CN 105545990 A CN105545990 A CN 105545990A
- Authority
- CN
- China
- Prior art keywords
- brake
- friction
- brake shoe
- cambered surface
- brake shoes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
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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
- F16D65/06—Bands, shoes or pads; Pivots or supporting members therefor for externally-engaging 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
- F16D65/78—Features relating to cooling
- F16D65/80—Features relating to cooling for externally-engaging brakes
- F16D65/807—Features relating to cooling for externally-engaging brakes with open cooling system, e.g. cooled by air
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a braking mechanism for an automobile and belongs to the field of brake production. A stretching promoting device comprises brake shoes, an outer friction part, a stretching promoting mechanism and brake bottom plates. The two brake shoes are oppositely arranged. The lower ends of the two brake shoes are hinged to the brake bottom plates through supporting pin shafts. Reset springs are installed between the middles of the two brake shoes. The upper ends of the two brake shoes are in transmission connection with the stretching promoting mechanism. A friction pair is composed of the axial circumferential faces of the brake shoes and the outer friction part. The braking mechanism for the automobile is characterized in that the axial tangent plane of the friction face of the outer friction part is an inwards-convex type arc face or two symmetrically-arranged inclined faces; and the friction pair is composed of the friction faces of the brake shoes and the friction face of the outer friction part, and the axial tangent plane of the friction pair is an inwards-concave type arc face or two symmetrically-arranged inclined faces. Compared with the prior art, the braking mechanism for the automobile has the beneficial effects of being good in radiating performance, stable in braking, short in braking distance and the like.
Description
Technical field
The present invention relates to brake producing field, specifically a kind of hub/drum-type automobile arrestment mechanism.
Background technique
Existing automotive brake mainly contains two kinds, disk type braker, drum brake.
Disk type braker for friction pair, adopts Open architecture with brake disc, brake block, although be beneficial to heat radiation, complex structure, braking force is little, is generally used for light-duty passenger car and uses.Drum brake forms friction pair by brake drum, the friction plate be arranged on brake shoe, although structure is relatively simple, braking force is large, but because of its structural limitations, can only sealed construction be adopted, therefore weak heat-dissipating, easily cause " heat fade " of braking force, be generally used for large-scale lorry and use.
In addition, existing drum braking mechanism is mostly two rollers promoted to both sides with the involute surface of central actuating shaft (or camshaft) head end on two brake shoes, and then promote two the support bearing pin opposite direction rotatings of two brake shoes on braking bottom board, outwards open.The friction plate be arranged on brake shoe outer arced surface is tightly pressed on the inner headed face of brake drum of rotation, and frictionally reaches the object of car deceleration or parking.Central actuating shaft and roller actuate deploying device as it.Although the short deploying device structure of this structure is simple, because central actuating shaft is by the restriction of its involute structure, have the following disadvantages: 1, central actuating shaft turns over same angle, and its lift is relatively too small.Once friction disc wear is serious, brake control power will reduce greatly, even brake failure.The corner of often adjustment central actuating shaft can only be leaned on to make up wear extent.2, opening with return of brake shoe is too slow, causes brake not in time and stopping distance is long, and brake release does not thoroughly produce meaningless friction.3, the involute surface of central actuating shaft and the curved surface of roller are linear contact lay, quick abrasion, cause after wearing and tearing open, return resistance increase.4, consider the factor that central actuating shaft lift is relatively little, the friction plate on brake shoe and the gap of brake drum can only be very little.This just causes a large amount of heat of friction generation not leave, and produces high temperature, causes " heat fade " of frictional force, cause brake failure.In addition high temperature causes the distortion of brake drum, more exacerbates meaningless friction.
Summary of the invention
Technical assignment of the present invention is for above-mentioned the deficiencies in the prior art, provides the automobile arrestment mechanism that a kind of structure is simple, good heat dissipation effect, braking force are strong.
Technical assignment of the present invention realizes in the following manner: a kind of automobile arrestment mechanism, comprise brake shoe, external friction part, actuate stretching mechanism and braking bottom board, two brake shoes are oppositely arranged, and the lower end of two brake shoes respectively by support bearing pin and braking bottom board hinged, between the middle part of two brake shoes, return spring is installed.The upper end of two brake shoes all with actuate stretching mechanism and be slidably connected; The outer round surface of brake shoe and external friction part form friction pair.Be characterized in: the rubbing surface of external friction part, its axial slices be the cambered surface of inner convexed (namely, the surface of revolution that convex camber line is formed for axle with brake shoe axis) or symmetrically arranged two inclined-planes (that is, the surface of revolution that symmetrical convex broken line is formed for axle with brake shoe axis); The rubbing surface of brake shoe, its axial slices is the cambered surface of concave or symmetrically arranged two inclined-planes.
The Placement of brake shoe and braking bottom board, and the Placement between return spring and brake shoe is known technology.
Described external friction part is preferably wheel hub, and wheel hub inner headed face is provided with friction plate, and the periphery of friction plate and brake shoe forms friction pair.The rubbing surface of friction plate, its axial slices is the cambered surface of inner convexed or symmetrically arranged two inclined-planes; The rubbing surface of brake shoe, its axial slices is the cambered surface of concave or symmetrically arranged two inclined-planes.
Wheel hub of the present invention is substantially identical with wheel hub structure in prior art, just within it disc fixed friction sheet, and is formed friction pair with friction plate and brake shoe.
Described external friction part can also be brake drum, and the axial periphery of brake shoe is provided with friction plate, and the inner headed face of brake drum and friction plate form friction pair.The rubbing surface of brake drum, its axial slices is the cambered surface of inner convexed or symmetrically arranged two inclined-planes; The rubbing surface of friction plate, its axial slices is the cambered surface of concave or symmetrically arranged two inclined-planes.
In order to strengthen heat radiation further, the inner headed face (with friction plate joint) of wheel hub arranges radiation hole, and radiation hole is connected with ambient air.
In addition, when taking brake drum as external friction part, also friction plate can be arranged on brake drum inner headed face, the axial periphery of friction plate and brake shoe forms friction pair.
Described brake drum can be identical with brake drum structure in prior art, but in order to reach best radiating effect, preferably adopt port open formula structure, bottom arranges radiation hole.
Described stretching mechanism of actuating can adopt published any one in prior art to actuate stretching mechanism, but in order to promote the braking effect of break of the present invention further, the following structure of preferred employing actuate stretching mechanism: its structure primarily of central actuating shaft, push rod form, central actuating shaft head end is processed with two symmetrical radial grooves, radial groove bottom land is provided with axial pin, push rod tail end inserts radial groove, and be slidably matched with axial pin outer wall cambered surface, push rod head end and brake shoe upper end are slidably matched.
Central actuating shaft rotates about the axis, and promotes push rod, and push rod and then promotion two brake shoes oppositely open.
As preferably, can process the semicircle cambered surface of indent on the end face that two brake shoe upper ends are relative, push rod head end and semicircle cambered surface are slidably matched.
In order to avoid there is axial displacement between push rod and brake shoe, can be processed with fluting at the middle part of semicircle cambered surface, the shaft shoulder of push rod head end is embedded in fluting.
Automobile arrestment mechanism of the present invention compared with prior art has following outstanding beneficial effect:
(1) overall structure and existing drum brake similar, compared with disk type braker, have the advantages that structure is simple, braking force is large;
(2) rubbing surface of brake shoe and external friction part adopts inner convexed design, in external friction part rotary course, under the influence of centrifugal force, the situation affecting braking effect without the need to worrying water inlet or enter sand occurs, therefore break just can adopt Open architecture, is beneficial to heat radiation;
(3) can be directly external friction part with wheel hub, compared with drum brake, eliminate brake drum, significantly reduce the quality of car load;
(4) actuate stretching mechanism, central actuating shaft rotates about the axis, and push rod and then promotion brake shoe open, and make braking more strong, braking distance increases, and braking return is more flexible.And larger braking distance can increase brake shoe opening angle, it is larger that the gap between friction pair can be designed, can improving radiating effect further, avoids or alleviate the phenomenon of braking force " heat fade ".
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of automobile arrestment mechanism embodiment one of the present invention;
Accompanying drawing 2 is the brake shoe of arrestment mechanism shown in Fig. 1 and the structural representation of actuating stretching mechanism part;
Accompanying drawing 3 is structural representations of the central actuating shaft of arrestment mechanism shown in Fig. 1;
Accompanying drawing 4 is A direction view of central actuating shaft shown in Fig. 3;
Accompanying drawing 5 is structural representations of the push rod of arrestment mechanism shown in Fig. 1;
Accompanying drawing 6 is B direction view of push rod shown in Fig. 5;
Accompanying drawing 7 is structural representations of automobile arrestment mechanism embodiment two of the present invention;
Accompanying drawing 8 is C direction view of arrestment mechanism shown in Fig. 7.
Embodiment
Automobile arrestment mechanism of the present invention is described in detail below with specific embodiment with reference to Figure of description.
Embodiment one:
As shown in accompanying drawing 1,2, automobile arrestment mechanism is formed primarily of brake drum (external friction part) 1, brake shoe 2, braking bottom board 3, return spring 4, friction plate 5, central actuating shaft 9 and push rod 10.
Supporting pin 6 on one end of brake shoe 2 and braking bottom board 3 is slidably connected, and the other end relies on the pulling force of return spring 4, is slidably connected by push rod 10 and central actuating shaft 9; Central actuating shaft 9 and braking bottom board 3 are slidably connected; Friction plate 5 by rivet riveting or be bonded on brake shoe 2; Brake drum 1 is linked together by bolt and wheel hub 14.
Described brake drum 1 has the structure of radiation hole for bottom.The axial slices of its inner headed face is the cambered surface (namely the inner headed face of brake drum 1 is the surface of revolution that convex camber line is formed for axle with brake shoe axis) of inner convexed; The periphery of friction plate 5, its axial slices is the cambered surface (namely the rubbing surface of friction plate 5 is surface of revolution that indent camber line is formed for axle with brake shoe axis) of concave.These two convexes, inner concave arc surface form friction pair.
The face that the top of two brake shoes 2 is relative is processed with respectively the semicircle cambered surface 7 of indent, and the middle part of the semicircle cambered surface 7 of indent all there is fluting 8.
As shown in accompanying drawing 3,4, central actuating shaft 9, its head end has the symmetrical radial groove 11 holding push rod 10, and has two axial pins 12 promoting push rod 10.Pore-throat on the axle journal of central actuating shaft 9 and braking bottom board 3 is slidably connected.
As shown in accompanying drawing 5,6, one end of push rod 10 is Semi-cylindrical concave, pin 12 on this concave surface and central actuating shaft 9 is slidably connected, two semicircular cambered surface 7 on two axle journals of the other end and brake shoe 2 is slidably connected, the shaft shoulder 13 of this head end is embedded in the fluting 8 on brake shoe 2 top simultaneously, is used for axially locating.
When stepping on brake, the powered central actuating shaft 9 of brake cylinder rotates, by push rod 10, power is delivered to one end of brake shoe 2 again, under the promotion of power, the support bearing pin 6 of two brake shoes 2 on braking bottom board 3 oppositely opens, the friction plate 5 of brake shoe 2 periphery is tightly pressed on the inner headed face of brake drum 1 of rotation, and powerful frictional force forces vehicle deceleration or the stopping of enforcement.
Embodiment two:
As shown in accompanying drawing 7,8, automobile arrestment mechanism is formed primarily of wheel hub (external friction part) 14, brake shoe 2, braking bottom board 3, return spring 4, friction plate 5, central actuating shaft 9 and push rod 10.
Wheel hub 14 and Automobile shaft rely on rolling bearing to be slidably connected; Supporting pin 6 on one end of brake shoe 2 and braking bottom board 3 is slidably connected, and the other end relies on the pulling force of return spring 4, is slidably connected by push rod 10 and central actuating shaft 9; Central actuating shaft 9 and braking bottom board 3 are slidably connected; Friction plate 5 by rivet riveting or be bonded on wheel hub 14.
The inner headed face of the friction plate 5 on wheel hub 14, its axial slices is the cambered surface (i.e. convex camber line formed for axle with brake shoe axis surface of revolution) of inner convexed; The periphery of brake shoe 2, its axial slices is the cambered surface (namely the periphery of brake shoe 2 is surface of revolution that indent camber line is formed for axle with brake shoe axis) of concave.These two convexes, inner concave arc surface form friction pair.
The axial radiation hole 15 be connected with ambient air is processed with in wheel hub 14 sidewall.
The face that the top of two brake shoes 2 is relative is processed with respectively the semicircle cambered surface 7 of indent, and the middle part of the semicircle cambered surface 7 of indent all there is fluting 8.
The structure of central actuating shaft 9 and push rod 10 and annexation identical with embodiment one.
When stepping on brake, the powered central actuating shaft 9 of brake cylinder rotates, by push rod 10, power is delivered to one end of brake shoe 2 again, under the promotion of power, the support bearing pin 6 of brake shoe 2 on braking bottom board 3 oppositely opens, the periphery of brake shoe 2 is tightly pressed on the friction plate 5 of wheel hub 14 inner headed face of rotation, and powerful frictional force forces vehicle deceleration or the stopping of enforcement.
Claims (7)
1. an automobile arrestment mechanism, comprise brake shoe, external friction part, actuate stretching mechanism and braking bottom board, two brake shoes are oppositely arranged, and the lower end of two brake shoes respectively by support bearing pin and braking bottom board hinged, between the middle part of two brake shoes, return spring is installed, the upper end of two brake shoes all with actuate stretching mechanism and be in transmission connection, outer round surface and the external friction part inner headed face of brake shoe form friction pair, it is characterized in that: the rubbing surface of external friction part, its axial slices is the cambered surface of inner convexed or symmetrically arranged two inclined-planes; The rubbing surface of brake shoe, its axial slices is the cambered surface of concave or symmetrically arranged two inclined-planes.
2. break according to claim 1, is characterized in that: described external friction part is wheel hub, and wheel hub inner headed face is provided with friction plate, and the periphery of friction plate and brake shoe forms friction pair;
The rubbing surface of friction plate, its axial slices is the cambered surface of inner convexed or symmetrically arranged two inclined-planes, the rubbing surface of brake shoe, and its axial slices is the cambered surface of concave or symmetrically arranged two inclined-planes.
3. break according to claim 1, is characterized in that: described external friction part is brake drum, and the periphery of brake shoe is provided with friction plate, and the inner headed face of brake drum and friction plate form friction pair;
The rubbing surface of brake drum, its axial slices is the cambered surface of inner convexed or symmetrically arranged two inclined-planes; The rubbing surface of friction plate, its axial slices is the cambered surface of concave or symmetrically arranged two inclined-planes.
4. break according to claim 3, is characterized in that: the bottom of described brake drum is provided with radiation hole, and port part is unenclosed construction.
5. the break according to claim 1,2,3 or 4, it is characterized in that: actuate stretching mechanism and form primarily of central actuating shaft, push rod, central actuating shaft head end is processed with two symmetrical radial grooves, radial groove bottom land is provided with axial pin, push rod tail end inserts radial groove, and be slidably matched with axial pin outer wall cambered surface, push rod head end and brake shoe upper end are slidably matched.
6. break according to claim 5, is characterized in that: the semicircle cambered surface end face that two brake shoe upper ends are relative being all processed with indent, push rod head end and semicircle cambered surface are slidably matched.
7. break according to claim 6, is characterized in that: the middle part of semicircle cambered surface is processed with fluting, and the shaft shoulder of push rod head end is embedded in fluting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042461.4A CN105545990B (en) | 2016-01-22 | 2016-01-22 | A kind of automobile arrestment mechanism |
| PCT/CN2017/071857 WO2017125064A1 (en) | 2016-01-22 | 2017-01-20 | Automobile braking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042461.4A CN105545990B (en) | 2016-01-22 | 2016-01-22 | A kind of automobile arrestment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105545990A true CN105545990A (en) | 2016-05-04 |
| CN105545990B CN105545990B (en) | 2018-12-07 |
Family
ID=55825421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610042461.4A Expired - Fee Related CN105545990B (en) | 2016-01-22 | 2016-01-22 | A kind of automobile arrestment mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105545990B (en) |
| WO (1) | WO2017125064A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017125064A1 (en) * | 2016-01-22 | 2017-07-27 | 周广如 | Automobile braking mechanism |
| CN107859697A (en) * | 2017-07-13 | 2018-03-30 | 周广如 | Automobile using arrestment mechanism and the wheel hub being used cooperatively with the arrestment mechanism |
| CN113931943A (en) * | 2021-10-13 | 2022-01-14 | 昆明裕恒汽车配件制造有限公司 | High-strength wear-resistant automobile brake drum |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29823591U1 (en) * | 1998-08-17 | 1999-09-02 | Porsche Ag | Disc brake for vehicles |
| CN2545425Y (en) * | 2002-07-01 | 2003-04-16 | 张叶平 | Brake with two-way push block on drive wheel |
| CN201502649U (en) * | 2009-06-29 | 2010-06-09 | 梅向东 | Automobile spiral groove type brake drum |
| CN102808873A (en) * | 2012-08-15 | 2012-12-05 | 周兴 | Conical surface friction brake for industry and automobiles |
| CN103867611A (en) * | 2012-12-10 | 2014-06-18 | 杨勇 | Drum type brake device |
| CN205371386U (en) * | 2016-01-22 | 2016-07-06 | 周广如 | Arrestment mechanism for car |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670664Y (en) * | 2003-12-16 | 2005-01-12 | 高朝纲 | Hiden spring gapless drum brake of vehicle |
| CN2881200Y (en) * | 2006-03-09 | 2007-03-21 | 陕西汉德车桥有限公司 | Brake of automobile |
| CN102434609A (en) * | 2011-12-14 | 2012-05-02 | 张万川 | Folding mandril spreading device for internal-expanding wheel drum brake |
| KR20140066030A (en) * | 2012-11-22 | 2014-05-30 | 한국델파이주식회사 | Drum brake for vehicle |
| CN103899683B (en) * | 2014-04-17 | 2018-04-10 | 周广如 | A kind of automobile drum brake is with actuating deploying device and drum brake |
| CN105545990B (en) * | 2016-01-22 | 2018-12-07 | 周广如 | A kind of automobile arrestment mechanism |
-
2016
- 2016-01-22 CN CN201610042461.4A patent/CN105545990B/en not_active Expired - Fee Related
-
2017
- 2017-01-20 WO PCT/CN2017/071857 patent/WO2017125064A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29823591U1 (en) * | 1998-08-17 | 1999-09-02 | Porsche Ag | Disc brake for vehicles |
| CN2545425Y (en) * | 2002-07-01 | 2003-04-16 | 张叶平 | Brake with two-way push block on drive wheel |
| CN201502649U (en) * | 2009-06-29 | 2010-06-09 | 梅向东 | Automobile spiral groove type brake drum |
| CN102808873A (en) * | 2012-08-15 | 2012-12-05 | 周兴 | Conical surface friction brake for industry and automobiles |
| CN103867611A (en) * | 2012-12-10 | 2014-06-18 | 杨勇 | Drum type brake device |
| CN205371386U (en) * | 2016-01-22 | 2016-07-06 | 周广如 | Arrestment mechanism for car |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017125064A1 (en) * | 2016-01-22 | 2017-07-27 | 周广如 | Automobile braking mechanism |
| CN107859697A (en) * | 2017-07-13 | 2018-03-30 | 周广如 | Automobile using arrestment mechanism and the wheel hub being used cooperatively with the arrestment mechanism |
| CN113931943A (en) * | 2021-10-13 | 2022-01-14 | 昆明裕恒汽车配件制造有限公司 | High-strength wear-resistant automobile brake drum |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017125064A1 (en) | 2017-07-27 |
| CN105545990B (en) | 2018-12-07 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 Termination date: 20210122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |