CN103253254A - Automobile braking system - Google Patents
Automobile braking system Download PDFInfo
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- CN103253254A CN103253254A CN2012105807253A CN201210580725A CN103253254A CN 103253254 A CN103253254 A CN 103253254A CN 2012105807253 A CN2012105807253 A CN 2012105807253A CN 201210580725 A CN201210580725 A CN 201210580725A CN 103253254 A CN103253254 A CN 103253254A
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Abstract
The invention discloses an automobile braking system aiming to solve the problems of dissatisfactory in combination property and poor power braking effect of automobile braking systems. The automobile braking system comprises a booster and a brake pedal which is connected with the booster, the booster is connected with front wheel brakes and rear wheel brakes through oil pipes, the front wheel brakes are floating caliper disc brakes, and the rear wheel brakes are drum brakes. The disc brakes and the drum brakes are combined in use; thus, on one hand, excellent braking effect of an automobile is guaranteed, and on the other hand, damages to the automobile in the braking process are reduced to the minimum; and service life of the automobile is prolonged.
Description
Technical field
The present invention relates to a kind of brake equipment, more particularly, it relates to the good brake system of car of a kind of deceleration and stopping performance.
Background technology
Brake system of car is the important component part of automobile, the performance of brake system directly affects the traffic safety of automobile, what present most of automobile used is plate disc brake or drum brake mechanism, plate disc brake when in use, retro-speed is fast, reaches bigger drag friction power rapidly, and this brake mode is bigger to the performance impact of automobile, braking is prone to locking phenomenon, and friction lining and brake disc wear and tear easily.Drum brake mechanism moves the realization braking by the piston drive brake shoe brake cheek of both sides in the wheel cylinder, the resistance that runs into when two-piston is not simultaneously, oil pressure promotes two-piston, two-piston moving velocity difference, mobile poor synchronization, thereby the poor synchronization that two brake shoe brake cheek that are connected with two-piston are respectively moved has influenced the braking effect of drum brake mechanism greatly.
Chinese patent publication number CN1563734A, a kind of automotive disc brake is disclosed, two piston groups in the hydraulic actuating cylinder of plate disc brake are connected steel mat, spring, short piston, long-term job plug successively by bolt, rectangle or O shape oil sealing are in the oil seal groove of short piston, and L shaped or C shape oil sealing is in the oil seal groove of long-term job plug.Two piston groups are slided to the both sides of hydraulic actuating cylinder during braking, the friction lining of two of brake discs is all promptly fitted with brake disc, by friction force braking brake disc, because retro-speed is fast, reach bigger drag friction power rapidly, this brake mode is bigger to the performance impact of automobile, and braking is prone to locking phenomenon, and friction lining and brake disc wear and tear easily.Chinese patent publication No. CN102312944A for another example, a kind of drum brake mechanism is disclosed, comprise brake wheel, first brake shoe brake cheek, second brake shoe brake cheek, two ends are hooked on the pull back spring on first brake shoe brake cheek and second brake shoe brake cheek respectively, and be connected in clearance self-regulating mechanism between first brake shoe brake cheek and second brake shoe brake cheek, clearance self-regulating mechanism comprises the screw rod cover, screw rod and pivot carrier, first section of screw rod has outside thread, the screw rod cover has negative thread, outside thread and negative thread constitute self-locking line pair, it is free-running fit between negative thread and the outside thread, second section of screw rod is connected with the pivot carrier pivotly, clearance self-regulating mechanism also comprise make screw rod cover and screw rod mutually away from push part.There is the different situation of two-piston resistance in the piston at this drum brake mechanism wheel cylinder two ends when sliding, thereby the poor synchronization that two brake shoe brake cheek that cause being connected with two-piston move has influenced the braking effect of drum brake mechanism greatly.
Summary of the invention
The present invention has overcome the deficiency of following three aspects: the firstth, and the Combination property of brake system of car is not ideal enough, and braking effect is poor; The secondth, plate disc brake when in use, retro-speed is fast, reaches bigger drag friction power rapidly, and is bigger to the performance impact of automobile, braking is prone to locking phenomenon, and friction lining and brake disc wear and tear easily; The 3rd is that the piston at drum brake mechanism wheel cylinder two ends exists the different situation of two-piston resistance when sliding, thereby the poor synchronization that two brake shoe brake cheek that cause being connected with two-piston move has influenced the braking effect of drum brake mechanism greatly.The invention provides a kind of brake system of car, its Combination property ideal, good braking effect.The plate disc brake friction force between friction lining and the brake disc when in use increases gradually, rather than increase rapidly, reduce braking procedure to the damage of automobile, reduced the wearing and tearing of friction lining and brake disc, braking is not prone to locking phenomenon, has prolonged the service life of drg.Synchronism was good when two brake shoe brake cheek of drum brake mechanism were braked, and had guaranteed that brake wheel has braking effect preferably.Plate disc brake and drum brake mechanism are used in combination, have on the one hand guaranteed that automobile has good braking effect, it is minimum that braking procedure is dropped to the damage of automobile, prolongs the service life of automobile.
In order to solve the problems of the technologies described above, the present invention is by the following technical solutions: a kind of brake system of car, comprise that brake pedal, brake pedal connect servo-unit, servo-unit connects front-wheel brake and rear wheel brake by oil pipe, front-wheel brake is the caliper disk brake that floats, and rear wheel brake is drum brake mechanism.
Front-wheel adopts the caliper disk brake that floats to brake in the brake system of car, and trailing wheel adopts drum brake mechanism to brake, and float caliper disk brake heat dispersion and fordability are good, the good stability of braking.Drum brake mechanism can reach very high braking effectiveness factor, and braking force is big.The unsteady caliper disk brake of brake system of car comprehensive application and drum brake mechanism, automobile brake Combination property ideal, good braking effect.
As preferably, unsteady caliper disk brake comprises brake disc, brake clamp, be provided with cavity in the brake clamp, cavity comprises oil pocket and brake disc container cavity, the brake disc container cavity radially is inserted on the brake disc, brake clamp is provided with the fuel feed hole that is communicated with oil pocket, be provided with piston in the oil pocket, end captive joint first lining pad of piston, captive joint second lining pad on the brake disc container cavity inwall relative with piston, brake disc is arranged between first lining pad and second lining pad, first lining pad is provided with some pad grooves near the surface of brake disc, and second lining pad is provided with raised line near the surface of brake disc, and the cross section of raised line is the arc of evagination, brake disc and the second lining pad facing surfaces are provided with the circular groove adaptive with raised line, and the circular groove cross section is the indent arc.
The drg of this structure is in braking, step on brake pedal, fluid is transported in the oil pocket from fuel feed hole, high-voltage oil liquid promotes the piston motion, the motion of piston promotes first lining pad and relies on brake disc, and after first lining pad and brake disc applying, piston continues motion, make brake clamp to moving with the direction of piston reverse movement, second lining pad is also fitted with brake disc.First lining pad and second lining pad are all fitted with brake disc, realize braking.The process of braking is first lining pad and brake disc applying braking earlier, because first lining pad is being provided with some pad grooves with the brake disc bonding surfaces, reduced the fitting area of first lining pad and brake disc, reduced braking force, and first lining pad and the fricative buffing of brake disc can collect in the pad groove, prevent buffing between first lining pad and brake disc surface and accelerate the wearing and tearing of first lining pad and brake disc.The raised line of arc is set on the second lining pad surface, and the circular groove on arc raised line and the brake disc is adaptive, in braking, fit in the surface of raised line and the bottom surface of circular groove, their binding face is curved, rather than fit in the plane, increase the area of fitting, thereby increased braking force.Unsteady caliper disk brake is first lining pad and brake disc applying braking before this in braking, and braking force is little, and second lining pad and brake disc are fitted and braked then, and braking force is big.Brake disc drag friction power in braking increases gradually, rather than increases rapidly, reduces braking procedure to the damage of automobile, has reduced the wearing and tearing of lining pad and brake disc, and braking is not prone to locking phenomenon, has prolonged the service life of drg.
As preferably, the pad groove is curved, and the center of circle of arc pad groove is on the axis of brake disc.This structure has guaranteed that the pad groove is consistent with the profile of brake disc when rotating, and has reduced the wearing and tearing of pad groove in notch edges.
As preferably, radially be provided with some brake disc grooves on brake disc and the first lining pad facing surfaces, radially be provided with several louvres on the brake disc lateral wall.The brake disc groove is arranged on brake disc and the first lining pad bonding surfaces, braking starting stage first lining pad and brake disc fit brake in, suitably reduced friction force, prevent that friction force is excessive and the phenomenon of locking occurs.
As preferably, brake clamp is provided with the air bleed hole that is communicated with oil pocket, is connected with air bleed screw on the air bleed hole.Arranging of air bleed hole makes things convenient for gas purging in the oil pocket, makes the fluid in the oil pocket can not contain bubble.
As preferably, pistons end captive joint first backboard is provided with first bloop between first backboard and the piston, and first lining pad is fixedly connected on first backboard; Captive joint second backboard on the brake disc container cavity inwall relative with piston, captive joint second bloop between second backboard and the brake disc container cavity inwall, second lining pad is fixedly connected on second backboard.Friction lining and brake disc friction braking can produce noise, by the absorption of first bloop and second bloop, prevent that effectively noise transmission is to vehicle body.
As preferably, drum brake mechanism comprises brake wheel, brake shoe brake cheek, is connected friction lining, supporting seat, wheel cylinder on the brake shoe brake cheek, two brake shoe brake cheek, one end all is hinged on the supporting seat, the other end of two brake shoe brake cheek is a hinged connecting rod that is obliquely installed all, be provided with wheelcylinder piston in the wheel cylinder, connect articulated slab on the wheelcylinder piston, two connecting rods are hinged on the articulated slab together, and two connecting rods and two brake shoe brake cheek all are symmetrical arranged.
The motion of wheelcylinder piston promote to be hinged on two connecting rods on the articulated slab motion, two connecting rods outwards launch to promote two brake shoe brake cheek and outwards move, and friction lining and brake wheel inwall are fitted, and realize friction braking.Two connecting rods are to be hinged on together on the articulated slab, piston is in motion, and the stressed size and Orientation of two connecting rods is all consistent, and two connecting rods and two brake shoe brake cheek all are symmetrical arranged, therefore two brake shoe brake cheek synchronism in braking is good, has guaranteed that brake wheel has braking effect preferably.
As preferably, be connected with pull back spring between two brake shoe brake cheek.Between two brake shoe brake cheek pull back spring is set, in loosen the brake, by the elastic reaction of pull back spring two brake shoe brake cheek is drawn over to one's side to the centre, thereby two pull bars are drawn over to one's side and promote the piston return, simple in structure.
As preferably, the inner end surface of wheelcylinder piston is provided with boss, and boss and wheelcylinder piston end face connection location are provided with spacing ring, are provided with the limit friction ring in the spacing ring, be provided with the convex annular edge near lug boss position on the wheelcylinder piston inwall, edge, limit friction ring upper surface is fitted on the lower surface of convex edge; The wheelcylinder piston outer wall is provided with seal ring, is provided with two seal rings in the seal ring, and two seal rings are fitted in respectively on the two side of seal ring, are provided with the gap between two seal rings; Be connected with the flexible anti dust hood on the outer face of wheelcylinder piston, dust boot is socketed in the end of wheel cylinder.The limit friction ring is set in the spacing ring of wheelcylinder piston and boss connection location, and behind the wheelcylinder piston return, edge, limit friction ring upper surface is fitted on the lower surface of convex edge, prevents that the wheelcylinder piston return is excessive.Two seal rings are set in seal ring have formed two-layer hermetically-sealed construction, good seal performance.Dust boot prevents that foreign matter from having dropped into wheel cylinder, guarantees the safe trouble-free operation of wheel cylinder.
As preferably, the hinged end of connecting rod and brake shoe brake cheek is provided with slot, and slot is arranged on interlinking lever end is taken the shape of the letter U, and brake shoe brake cheek is hinged in the slot; The hinged end of connecting rod and articulated slab is provided with two hinged ears, and hinged ear is near the lateral location of connecting rod, and another hinged ear is near connecting rod end face midway location, and the hinged ear on two connecting rods is staggered to be plugged on together and to be hinged on the articulated slab.Two connecting rods are hinged between articulated slab and the brake shoe brake cheek in this way, and are stressed more steady, further guarantee the synchronism of two brake shoe brake cheek braking.
Compared with prior art, the invention has the beneficial effects as follows: the Combination property ideal of (1) brake system of car, good braking effect; (2) plate disc brake when in use the friction force between friction lining and the brake disc increase gradually, rather than increase rapidly, reduce braking procedure to the damage of automobile, reduced the wearing and tearing of friction lining and brake disc, braking is not prone to locking phenomenon, has prolonged the service life of drg; Synchronism was good when (3) two brake shoe brake cheek of drum brake mechanism were braked, and had guaranteed that brake wheel has braking effect preferably; (4) plate disc brake and drum brake mechanism are used in combination, have on the one hand guaranteed that automobile has good braking effect, it is minimum that braking procedure is dropped to the damage of automobile, prolongs the service life of automobile.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the cutaway view of unsteady caliper disk brake of the present invention;
Fig. 3 is the cutaway view of drum brake mechanism of the present invention;
Fig. 4 is the cutaway view of wheel cylinder of the present invention;
Fig. 5 is the cutaway view of rod hinge connection of the present invention;
Among the figure: 1, brake pedal, 2, servo-unit, 3, caliper disk brake floats, 4, drum brake mechanism, 301, brake disc, 302, brake clamp, 303, oil pocket, 304 brake disc container cavities, 305, fuel feed hole, 306, piston, 307, first lining pad, 308, second lining pad, 309, the pad groove, 310, raised line, 311, circular groove, 312, the brake disc groove, 313, louvre, 314, air bleed hole, 315, air bleed screw, 316, first backboard, 317, first bloop, 318, second backboard, 319, second bloop, 401, brake wheel, 402, brake shoe brake cheek, 403, friction lining, 404, supporting seat, 405, wheel cylinder, 406, connecting rod, 407, wheelcylinder piston, 408, articulated slab, 409, pull back spring, 410, boss, 411, spacing ring, 412, the limit friction ring, 413, seal ring, 414, seal ring, 415, dust boot, 416, slot, 417, hinged ear, 418, the convex edge.
The specific embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is further described specifically:
Embodiment: a kind of brake system of car (referring to accompanying drawing 1), comprise that brake pedal 1, brake pedal 1 connect servo-unit 2, servo-unit 2 connects front-wheel brake and rear wheel brake by oil pipe, and front-wheel brake is the caliper disk brake 3 that floats, and rear wheel brake is drum brake mechanism 4.Be connected with inertia proportion valve on the oil pipe between rear wheel brake and the servo-unit 2.
Float caliper disk brake 3(referring to accompanying drawing 2) comprise brake disc 301, brake clamp 302, be provided with cavity in the brake clamp 302, cavity comprises oil pocket 303 and brake disc container cavity 304, brake disc container cavity 304 radially is inserted on the brake disc 301, brake clamp 302 is provided with the fuel feed hole 305 that is communicated with oil pocket 303, is provided with piston 306 in the oil pocket 303, and piston 306 is drum shape, drum shape piston 306 the bucket end towards fuel feed hole 305, the dead in line of fuel feed hole 305 axis and oil pocket 303.Brake clamp 302 is provided with the air bleed hole 314 that is communicated with oil pocket 303, and the angle between air bleed hole 314 axis and oil pocket 303 axis is acute angle, and air bleed hole 314 and fuel feed hole 305 are arranged on the same side of brake clamp 302.Closely be connected with air bleed screw 315 on the air bleed hole 314.End captive joint first lining pad 307 of piston 306 openings is captiveed joint second lining pad 308 on the relative inwall of brake disc container cavity 304 and piston 306, brake disc 301 is arranged between first lining pad 307 and second lining pad 308.Piston 306 end captive joints first backboard 316, be provided with first bloop 317 between first backboard 316 and the piston 306, first lining pad 307 is fixedly connected on first backboard 316, captive joint second backboard 318 on the relative inwall of brake disc container cavity 304 and piston 306, captive joint second bloop 319, the second lining pads 307 are fixedly connected on second backboard 318 between second backboard 318 and brake disc container cavity 304 inwalls.First lining pad 307 is provided with eight pad grooves 309 near the surface of brake disc 301, and pad groove 309 is curved, and the center of circle of arc pad groove 309 is on the axis of brake disc 301.Radially be provided with some brake disc grooves 312 on brake disc 301 and first lining pad, 307 facing surfaces, radially be provided with several louvres 313 on brake disc 301 lateral walls.Second lining pad 307 is provided with raised line 310 near the surface of brake disc 301, and the cross section of raised line 310 is the arc of evagination.Upper limb profile and the lower edge profile of raised line 310 are all curved, and the center of circle of curved profile is on the axis of brake disc 301.Brake disc 301 and second lining pad, 307 facing surfaces are provided with the circular groove 311 adaptive with raised line 310, and the circle of circular groove 311 is on the axis of brake disc 301, and circular groove 311 cross sections are the indent arc.
Drum brake mechanism 4(is referring to accompanying drawing 3) comprise brake wheel 401, brake shoe brake cheek 402, be connected friction lining 403, supporting seat 404, wheel cylinder 405 on the brake shoe brake cheek 402, supporting seat 404 and wheel cylinder 405 all are fixedly connected on the back-plate.Friction lining 403 is arranged on the outside face of brake shoe brake cheek 402.Two brake shoe brake cheek, 402 1 ends all are hinged on the supporting seat 404, the other end of two brake shoe brake cheek 402 is a hinged connecting rod that is obliquely installed 406 all, be provided with wheelcylinder piston 407 in the wheel cylinder 405, connect articulated slab 408 on the wheelcylinder piston 407, two connecting rods 406 are hinged on the articulated slab 408 together, and two connecting rods 406 and two brake shoe brake cheek 402 all are symmetrical arranged.Be connected with pull back spring 409 between two brake shoe brake cheek 402, the connection location of pull back spring 409 is near the articulated position of connecting rod 406 and brake shoe brake cheek 402 and below articulated position.Connecting rod 406 and brake shoe brake cheek 402 hinged ends are provided with slot 416(referring to accompanying drawing 5), slot 416 is arranged on connecting rod 406 ends is taken the shape of the letter U, and brake shoe brake cheek 402 is hinged in the slot 416 by jointed shaft.Connecting rod 406 and articulated slab 408 hinged ends are provided with two hinged ears 417, the lateral location of hinged ear 417 close connecting rods 406, another hinged ear 417 is near connecting rod 406 end face midways location, hinged ear 417 on two connecting rods 406 is staggered to be plugged on together and to be hinged on the articulated slab 408, and connecting rod 406 and articulated slab 408 are hinged by jointed shaft.The inner end surface of wheelcylinder piston 407 is provided with cylindrical boss 410(referring to accompanying drawing 4), boss 410 diameters are less than wheelcylinder piston 407 diameters, boss 410 and wheelcylinder piston 407 end face connection locations are provided with spacing ring 411, be provided with limit friction ring 412 in the spacing ring 411, be provided with convex annular along 418 near boss 410 positions on wheelcylinder piston 407 inwalls, edge, limit friction ring 412 upper surface is fitted on the lower surface of convex edge 418.Wheelcylinder piston 407 outer walls are provided with seal ring 413, be provided with two seal rings 414 in the seal ring 413, two seal rings 414 are fitted in respectively on the two side of seal ring 413, be provided with the gap between two seal rings 414, be connected with flexible anti dust hood 415 on the outer face of wheelcylinder piston 407, dust boot 415 is socketed in the end of wheel cylinder 405.Articulated slab is fastened on the wheelcylinder piston 407 by the screw connection.
Front-wheel adopts the caliper disk brake that floats to brake in the brake system of car, and trailing wheel adopts drum brake mechanism to brake.Step on brake pedal, fluid flows to unsteady caliper disk brake and drum brake mechanism is braked simultaneously.Fluid is transported in the oil pocket from the unsteady caliper disk brake fuel feed hole of front-wheel, high-voltage oil liquid promotes the piston motion, the motion of piston promotes first lining pad and relies on brake disc, after first lining pad and brake disc applying, piston continues motion, make brake clamp to moving with the direction of piston reverse movement, second lining pad is also fitted with brake disc.First lining pad and second lining pad are all fitted with brake disc, realize braking.The process of braking is first lining pad and brake disc applying braking earlier, because first lining pad is being provided with some pad grooves with the brake disc bonding surfaces, reduced the fitting area of first lining pad and brake disc, reduced braking force, and first lining pad and the fricative buffing of brake disc can collect in the pad groove, prevent buffing between first lining pad and brake disc surface and accelerate the wearing and tearing of first lining pad and brake disc.The raised line of arc is set on the second lining pad surface, and the circular groove on arc raised line and the brake disc is adaptive, in braking, fit in the surface of raised line and the bottom surface of circular groove, their binding face is curved, rather than fit in the plane, increase the area of fitting, thereby increased braking force.Unsteady caliper disk brake is first lining pad and brake disc applying braking before this in braking, and braking force is little, and second lining pad and brake disc are fitted and braked then, and braking force is big.Brake disc drag friction power in braking increases gradually, rather than increases rapidly, reduces braking procedure to the damage of automobile, has reduced the wearing and tearing of lining pad and brake disc, and braking is not prone to locking phenomenon, has prolonged the service life of drg.Simultaneously fluid flows in the cavity of wheel cylinder, the motion of wheelcylinder piston promote to be hinged on two connecting rods on the articulated slab motion, two connecting rods outwards launch to promote two brake shoe brake cheek and outwards move, and friction lining and brake wheel inwall are fitted, and realize friction braking.Two connecting rods are to be hinged on together on the articulated slab, piston is in motion, and the stressed size and Orientation of two connecting rods is all consistent, and two connecting rods and two brake shoe brake cheek all are symmetrical arranged, therefore two brake shoe brake cheek synchronism in braking is good, has guaranteed that brake wheel has braking effect preferably.
Above-described embodiment is a kind of preferable scheme of the present invention, is not that the present invention is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (10)
1. brake system of car, comprise that brake pedal (1), brake pedal connect servo-unit (2), servo-unit connects front-wheel brake and rear wheel brake by oil pipe, it is characterized in that, front-wheel brake is the caliper disk brake (3) that floats, and rear wheel brake is drum brake mechanism (4).
2. brake system of car according to claim 1, it is characterized in that, unsteady caliper disk brake comprises brake disc (301), brake clamp (302), be provided with cavity in the brake clamp, cavity comprises oil pocket (303) and brake disc container cavity (304), the brake disc container cavity radially is inserted on the brake disc, brake clamp is provided with the fuel feed hole (305) that is communicated with oil pocket, be provided with piston (306) in the oil pocket, end captive joint first lining pad (307) of piston, captive joint second lining pad (308) on the brake disc container cavity inwall relative with piston, brake disc is arranged between first lining pad and second lining pad, first lining pad is provided with some pad grooves (309) near the surface of brake disc, second lining pad is provided with raised line (310) near the surface of brake disc, the cross section of raised line is the arc of evagination, and brake disc and the second lining pad facing surfaces are provided with the circular groove adaptive with raised line (311), and the circular groove cross section is the indent arc.
3. brake system of car according to claim 2 is characterized in that, the pad groove is curved, and the center of circle of arc pad groove is on the axis of brake disc.
4. brake system of car according to claim 2 is characterized in that, radially is provided with some brake disc grooves (312) on brake disc and the first lining pad facing surfaces, radially is provided with several louvres (313) on the brake disc lateral wall.
5. according to claim 2 or 3 or 4 described brake system of car, it is characterized in that brake clamp is provided with the air bleed hole (314) that is communicated with oil pocket, is connected with air bleed screw (315) on the air bleed hole.
6. according to claim 2 or 3 or 4 described brake system of car, it is characterized in that pistons end captive joint first backboard (316) is provided with first bloop (317) between first backboard and the piston, first lining pad is fixedly connected on first backboard; Captive joint second backboard (318) on the brake disc container cavity inwall relative with piston, captive joint second bloop (319) between second backboard and the brake disc container cavity inwall, second lining pad is fixedly connected on second backboard.
7. according to claim 1 or 2 or 3 or 4 described brake system of car, it is characterized in that, drum brake mechanism comprises brake wheel (401), brake shoe brake cheek (402), is connected friction lining (403), supporting seat (404), wheel cylinder (405) on the brake shoe brake cheek, two brake shoe brake cheek, one end all is hinged on the supporting seat, the other end of two brake shoe brake cheek is a hinged connecting rod that is obliquely installed (406) all, be provided with wheelcylinder piston (407) in the wheel cylinder, connect articulated slab (408) on the wheelcylinder piston, two connecting rods are hinged on the articulated slab together, and two connecting rods and two brake shoe brake cheek all are symmetrical arranged.
8. brake system of car according to claim 7 is characterized in that, is connected with pull back spring (409) between two brake shoe brake cheek.
9. brake system of car according to claim 7, it is characterized in that, the inner end surface of wheelcylinder piston is provided with boss (410), boss and wheelcylinder piston end face connection location are provided with spacing ring (411), be provided with limit friction ring (412) in the spacing ring, be provided with convex annular along (418) near lug boss position on the wheelcylinder piston inwall, edge, limit friction ring upper surface is fitted on the lower surface of convex edge; The wheelcylinder piston outer wall is provided with seal ring (413), is provided with two seal rings (414) in the seal ring, and two seal rings are fitted in respectively on the two side of seal ring, are provided with the gap between two seal rings; Be connected with flexible anti dust hood (415) on the outer face of wheelcylinder piston, dust boot is socketed in the end of wheel cylinder.
10. brake system of car according to claim 8 is characterized in that, the hinged end of connecting rod and brake shoe brake cheek is provided with slot (416), and slot is arranged on interlinking lever end is taken the shape of the letter U, and brake shoe brake cheek is hinged in the slot; The hinged end of connecting rod and articulated slab is provided with two hinged ears (417), and hinged ear is near the lateral location of connecting rod, and another hinged ear is near connecting rod end face midway location, and the hinged ear on two connecting rods is staggered to be plugged on together and to be hinged on the articulated slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580725.3A CN103253254B (en) | 2012-12-28 | 2012-12-28 | Automobile braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580725.3A CN103253254B (en) | 2012-12-28 | 2012-12-28 | Automobile braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103253254A true CN103253254A (en) | 2013-08-21 |
| CN103253254B CN103253254B (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210580725.3A Expired - Fee Related CN103253254B (en) | 2012-12-28 | 2012-12-28 | Automobile braking system |
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| Country | Link |
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| CN (1) | CN103253254B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946830A (en) * | 2016-05-27 | 2016-09-21 | 湖南三路面机械有限公司 | Hydraulic brake system and engineering vehicle |
| CN110454519A (en) * | 2019-08-28 | 2019-11-15 | 安徽理工大学 | A kind of vehicle electromechanical drum brake |
| CN113104003A (en) * | 2021-04-21 | 2021-07-13 | 江苏大学 | Automobile safety braking booster unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110454519B (en) * | 2019-08-28 | 2020-09-25 | 安徽理工大学 | Automobile electronic mechanical drum brake |
| CN113104003A (en) * | 2021-04-21 | 2021-07-13 | 江苏大学 | Automobile safety braking booster unit |
| CN113104003B (en) * | 2021-04-21 | 2022-09-16 | 江苏大学 | Automobile safety braking booster unit |
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| CN103253254B (en) | 2015-06-10 |
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