CN2231992Y - Brake device by inertia for car - Google Patents
Brake device by inertia for car Download PDFInfo
- Publication number
- CN2231992Y CN2231992Y CN 95234184 CN95234184U CN2231992Y CN 2231992 Y CN2231992 Y CN 2231992Y CN 95234184 CN95234184 CN 95234184 CN 95234184 U CN95234184 U CN 95234184U CN 2231992 Y CN2231992 Y CN 2231992Y
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- Prior art keywords
- oil
- check valve
- gap adjusting
- fuel
- valve
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- Expired - Fee Related
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Abstract
The utility model relates to a brake device by inertia for a car, which is a brake device with new structure in the automobile field. The utility model is provided with a shell which is moulded integrately, and two separating pump pistons are arranged in the shell. The brake device is also provided with a hydraulic one-way pump, a return check valve, an oil outlet one-way valve, a control reversing valve and a correct chamber for the gap of a braking shoe, wherein, a rolling wheel on the hydraulic one-way pump rolls along a wave-shaped thrust ring arranged on the inner side of a brake drum. The oil inlet of the hydraulic one-way pump opens into the outer side of the valve core of the control reversing valve by a pore canal, while the oil outlet is communicated with the oil inlet of the oil outlet one-way valve by the pore canal. The oil inlet of the control reversing valve is arranged on the wall of an oil cavity at the right end. The upper part and the lower part of an automatically adjusting gap disk of the braking shoe are respectively provided with an upper oil cavity for automatically adjusting the gap and a lower oil cavity for automatically adjusting the gap.
Description
The utility model relates to a kind of brake gear of automotive field new construction, is a kind of inertia automobile braking device specifically.
The automobile braking device of producing both at home and abroad generally adopts the servo-type brake system at present, promptly uses manpower and mechanically aided.Gas stops that the type brake structure includes air compressor, holds gas bag, oil water separator and complicated pipelines equipment.Air pressure will reach certain numerical value, could brake.Complex structure, maintenance, upkeep cost height.The oil type brake structure of stopping need be installed equipment such as vacuum booster unit, and this brake gear must be that driving engine is in and could uses under the operating condition, otherwise then can not use, and has increased the waste of power of driving engine, and the waste oil plant has strengthened the maintenance cost.
The utility model purpose is to overcome the shortcoming in the above-mentioned technology, propose a kind ofly to save compressor, hold gas bag, the relative simple inertia automobile braking device of structure of complicated pipelines equipment and vacuum booster unit, make it can reduce the engine power loss, save oil plant, reduce the maintenance cost.
The present utility model purpose is realized by following technical scheme: the inertia automobile braking device that the utility model provides, a cast-in-block housing is arranged, in 2 wheelcylinder pistons are housed, hydraulic pressure one-way pump, return check valve, fuel-displaced check valve, control change-over valve and levelling chamber, brake shoe gap also are housed.Roller on the hydraulic pressure one-way pump rolls along the waveform thrust collar that is contained in the brake drum inboard, hydraulic pressure one-way pump oil inlet is led to the outside of controlling change-over valve core by the duct, the oil outlet passing hole channel communicates with the oil inlet of fuel-displaced check valve, the oil outlet passing hole channel of fuel-displaced check valve communicates with the oil inlet of control change-over valve, with storage tank oil pipe silk braid the storage tank oil pipe is fixedly connected on the housing, by the duct storage tank oil pipe and return check valve is replenished hydraulic fluid port and be communicated with.The oil outlet of return check valve leads to the left annular groove on the control change-over valve core, the oil inlet of control change-over valve is opened on right-hand member oil pocket wall, control reversing valve core left side communicates with the control oil pipe, brake shoe automatic gap adjusting dish is housed in the housing lower end, automatic gap adjusting upper oil cavitie and automatic gap adjusting lower oil cavitie is arranged in that brake shoe automatic gap adjusting dish is upper and lower respectively.
The unidirectional pump housing of hydraulic pressure is contained in the hole on inertia automobile braking device housing top, the unidirectional pump housing left end of hydraulic pressure is pushed down steel ball by spring and is got lodged on the oil inlet, right-hand member has roller shaft to pass the roller center, roller can rotate around roller shaft, the external side of hydraulic pressure one-way pump is equipped with the lateral surface oil interceptor one, be screwed into screw in the groove above the unidirectional pump housing of hydraulic pressure, prevent to rotate.
Return check valve leaves on the housing of automobile braking device, there is the return check valve spring centre, one end is sealed by the return check valve plug, the other end is blocked a return opening by the return check valve steel ball, this return opening leads to the control change-over valve core outside by the duct, also have an oil outlet to communicate with control change-over valve left side annular groove, additional hydraulic fluid port is opened in position, middle and upper part, return check valve chamber.
What fuel-displaced check valve was relative with return check valve opens in the housing both sides, a fuel-displaced check valve spring is arranged in the middle of the fuel-displaced check valve, one end is sealed by fuel-displaced check valve plug, the other end is blocked oil inlet by fuel-displaced check valve steel ball, has the oil outlet passing hole channel to communicate with control change-over valve oil pocket in the middle of the fuel-displaced check valve.
Have in the inner chamber of control change-over valve one can left and right mobile reversing valve core, in the reversing valve core outside left annular groove and right annular groove are arranged, annular groove left side, a left side has a change-over valve oil interceptor to be enclosed within on the reversing valve core, left end by collar, control oil pipe silk braid will control oil pipe and reversing valve core connects together, communicate with right centre hole, right-hand member oil pocket at annular groove, the change-over valve pull back spring is housed in the right-hand member oil pocket, and oil inlet is positioned on the right-hand member oil pocket wall.
The brake shoe gap is the automatic gap adjusting dish in the middle of the levelling chamber, its top is the automatic gap adjusting upper oil cavitie, the below is the automatic gap adjusting lower oil cavitie, the brake shoe automatic gap adjusting dish outside is with transfers crack dish oil seal washer, between the automatic gap adjusting plug of lower end and the housing that is connected, accompany the automatic gap adjusting packing ring, the hole that upper and lower break-through is arranged in the middle of the brake shoe automatic gap adjusting dish is equipped with in the hole and is transferred crack dish steel ball.
During brake under the control of driver's master cylinder pedal, flow through the brake solution of coming from the control oil pipe there is pressure control reversing valve core left side, push to move to right and will control reversing valve core, the left annular groove of control reversing valve core is aimed at return check valve oil outlet and hydraulic pressure one-way pump oil inlet, and the unidirectional pump housing of hydraulic pressure produces crank motion under the promotion of waveform thrust collar.Brake solution from the hydraulic pressure one-way pump after the duct flows into fuel-displaced check valve, flow into again in the oil pocket on control change-over valve the right, right annular groove and return check valve fuel return hole cut off, because right annular groove and right-hand member centre hole communicate with the automatic gap adjusting lower oil cavitie, brake solution flows into the automatic gap adjusting lower oil cavitie immediately, backs down the steel ball that is positioned on the automatic gap adjusting dish intermediate throughholes, enter the automatic gap adjusting upper oil cavitie, and enter the Braking piston cavity volume, and promote piston and move outward, make the brake shoe spreading and realize brake.The dynamics of its brake is controlled by the driver, and the tension of wheel cylinder can reach the brake requirement.As long as wheel just has brake solution and enters wheel cylinder,, also can reach control brake purpose even the area of contact of brake shoe is littler.Even, can reduce hours to repair, save service expenditure, the gap that levelling chamber in brake shoe gap can be aligned brake shoe automatically during brake so the rare excess wearing and tearing of brake shoe have braking action equally.When needs were eliminated the brake situation, the driver can be as usual, and the releasing of brake pedal gets final product.At this moment, the control reversing valve core is return under the effect of control change-over valve pull back spring, is moved to the left.The duct that the hydraulic pressure one-way pump fuel feed hole of control change-over valve top leads to the control reversing valve core outside is plugged, oil can not enter the hydraulic pressure one-way pump can only be pressed into behind the fuel-displaced check valve oil pocket of control of access change-over valve right-hand member again by the hydraulic pressure one-way pump, hydraulic pressure one-way pump inner chamber does not have oil pressure, so unidirectional pump housing of hydraulic pressure, because roller rolls on the waveform thrust collar, after being pushed inside by the waveform top, can not stretch out, reduce the wearing and tearing of hydraulic pressure one-way pump.
The advantage of this automobile braking device is that structure is simple relatively, stop many accessory machinerys of type and fluid power type brake gear of original gas have been saved, reduced cost, and the cost that has reduced maintenance and maintained, it is little to wear and tear, and long service life does not consume engine power, save oil plant, easy for installation on automobile.
Embodiment of accompanying drawings:
Fig. 1 is a kind of inertia automobile braking device erection plan on brake disc,
Fig. 2 is A-A cutaway view,
Fig. 3 is C-C cutaway view,
Fig. 4 is that D is to view.
This inertia automobile braking device has a cast-in-block housing (1), 2 wheelcylinder pistons (24) are housed in the housing (1), and its inner chamber is equipped with wheel cylinder leather cup (37), and ectosome studs with oil seal washer (25), prevent leakage of oil, dustproof wind cover (36) is enclosed within the housing outer groove.Return check valve and fuel-displaced check valve also are housed in the housing, they are relative is contained in the housing both sides, control change-over valve and brake shoe gap levelling chamber in addition in addition, roller on the hydraulic pressure one-way pump (4) rolls along being contained in the inboard waveform thrust collar (5) of brake drum (7), the oil inlet of hydraulic pressure one-way pump (42) is led to the outside of control reversing valve core (13) by the duct, oil outlet (38) passing hole channel communicates with the oil inlet of fuel-displaced check valve, the oil outlet passing hole channel of fuel-displaced check valve communicates with the oil inlet (39) of control change-over valve, with storage tank pipeline silk braid (29) storage tank oil pipe (30) is fixedly connected on the housing (1), by duct (40) storage tank oil pipe (30) and return check valve being replenished hydraulic fluid port communicates, the oil outlet of return check valve leads to the left annular groove on the control change-over valve core (13), the oil inlet (39) of control change-over valve is opened on the oil pocket wall of right-hand member, the right-hand member oil pocket communicates with right annular groove by right-hand member centre hole (43), the left side of control reversing valve core (13) communicates with control oil pipe (28), brake shoe automatic gap adjusting dish (20) is housed, thereon in the housing lower end, automatic gap adjusting upper oil cavitie (22) and automatic gap adjusting lower oil cavitie (41) are arranged respectively down.Automatic gap adjusting upper oil cavitie (22) is communicated with wheelcylinder piston oil pocket (45) by through hole (35).The hydraulic pressure one-way pump is contained in the hole on housing (1) top, the unidirectional pump housing of hydraulic pressure (2) is pushed down pump steel ball (9) by spring (4), get lodged on the oil inlet, right-hand member has roller shaft (3) to pass roller (4) center, roller (4) can rotate around roller shaft (3), and the unidirectional pump housing of hydraulic pressure (2) lateral surface is equipped with one lateral surface oil interceptor (8).Be screwed with screw (40) above the unidirectional pump housing of hydraulic pressure in the groove, prevent to rotate.What return check valve was relative with fuel-displaced check valve opens in the housing both sides, return check valve spring (19) is housed in the middle of the return check valve, one end is sealed by return check valve plug (17), the other end is blocked a return opening by return check valve steel ball (18), this return opening leads to control reversing valve core (13) outside by duct (44), left annular groove on also having an oil outlet and controlling reversing valve core (13) communicates, and additional hydraulic fluid port is opened in position, middle and upper part, return check valve chamber.A fuel-displaced check valve spring (11) is arranged in the middle of the fuel-displaced check valve, valve pocket one end is sealed by fuel-displaced check valve plug (12), the other end is blocked oil inlet by fuel-displaced check valve steel ball (10), and middle below has the oil outlet passing hole channel and communicates with control change-over valve oil inlet (39).Have in the inner chamber of control change-over valve one can left and right mobile reversing valve core (13), in reversing valve core (13) outside left annular groove and right annular groove are arranged, change-over valve oil interceptor (15) is enclosed within on the reversing valve core (13), and left end will be controlled oil pipe (28) and be connected together with reversing valve core (13) by collar (16), control oil pipe silk braid (27).Right annular groove communicates with right centre hole, right-hand member oil pocket, is communicated with the automatic gap adjusting lower oil cavitie by duct (46) during brake.Change-over valve pull back spring (14) is housed in the right-hand member oil pocket, and oil inlet is positioned on the right-hand member oil pocket wall.The top of automatic gap adjusting dish (20) is automatic gap adjusting upper oil cavitie (22), the below is automatic gap adjusting lower oil cavitie (41), be with accent crack dish oil seal washer (23) in the brake shoe automatic gap adjusting dish outside, between the automatic gap adjusting plug (26) of lower end and housing (1), accompany automatic gap adjusting packing ring (31), the hole that upper and lower break-through is arranged in the middle of the automatic gap adjusting dish is equipped with in the hole and is transferred crack dish steel ball (21).Pull back spring (32) is housed in the automatic gap adjusting lower oil cavitie, and brake shoe (33) is connected on the inertia automobile braking device shell (1) with brake shoe returning pull-spring (34).
Claims (6)
1, a kind of inertia automobile braking device, a cast-in-block housing is arranged, in 2 wheelcylinder pistons are housed, it is characterized in that in housing, also being equipped with the hydraulic pressure one-way pump, return check valve, fuel-displaced check valve, control change-over valve and levelling chamber, brake shoe gap, roller on the hydraulic pressure one-way pump rolls along the waveform thrust collar that is contained in the brake drum inboard, hydraulic pressure one-way pump oil inlet is led to the outside of controlling change-over valve core by the duct, the oil outlet passing hole channel communicates with the oil inlet of fuel-displaced check valve, the oil outlet passing hole channel of fuel-displaced check valve communicates with the oil inlet of control change-over valve, with storage tank oil pipe silk braid the storage tank oil pipe is fixedly connected on the housing, by the duct storage tank oil pipe and return check valve being replenished hydraulic fluid port is communicated with, the return check valve oil outlet leads to the left annular groove on the control change-over valve core, the oil inlet of control change-over valve is opened on right-hand member oil pocket wall, the spool left side of control change-over valve communicates with the control oil pipe line, brake shoe automatic gap adjusting dish is housed, on the brake shoe automatic gap adjusting dish in the housing lower end, automatic gap adjusting upper oil cavitie and automatic gap adjusting lower oil cavitie are arranged respectively down.
2, according to the described inertia automobile braking device of claim 1, it is characterized in that the unidirectional pump housing left end of hydraulic pressure pushes down steel ball by spring, get lodged on the oil inlet, right-hand member has roller shaft to pass the roller center, roller can rotate around roller shaft, the external side of hydraulic pressure one-way pump is equipped with the lateral surface oil interceptor one, is screwed into screw in the groove above the unidirectional pump housing of hydraulic pressure, prevents to rotate.
3, according to the described inertia automobile braking device of claim 1, it is characterized in that return check valve leaves on housing, there is the return check valve spring centre, one end has the return check valve plug to seal, the other end is blocked a return opening by the return check valve steel ball, this return opening leads to the control change-over valve core outside by the duct, also has an oil outlet to communicate with control change-over valve left side annular groove, and additional hydraulic fluid port is opened in position, middle and upper part, return check valve chamber.
4, according to the described inertia automobile braking device of claim 1, it is characterized in that open in housing both sides relative of fuel-displaced check valve with return check valve, a fuel-displaced check valve spring is arranged in the middle of the fuel-displaced check valve, one end is sealed by fuel-displaced check valve plug, the other end is blocked oil inlet by fuel-displaced check valve steel ball, has the oil outlet passing hole channel to communicate with control change-over valve oil pocket in the middle of the fuel-displaced check valve.
5, according to the described inertia automobile braking device of claim 1, it is characterized in that controlling have in the inner chamber of change-over valve one can left and right mobile reversing valve core, in the reversing valve core outside left annular groove and right annular groove are arranged, annular groove left side, a left side has a change-over valve oil interceptor to be enclosed within on the reversing valve core, left end by collar, control oil pipe silk braid will control oil pipe and reversing valve core connects together, right annular groove is connected with right centre hole, right-hand member oil pocket, the change-over valve pull back spring is housed in the right-hand member oil pocket, and oil inlet is positioned on the right-hand member oil pocket wall.
6, according to the described inertia automobile braking device of claim 1, it is characterized in that being the automatic gap adjusting dish in the middle of the levelling chamber, brake shoe gap, its top is the automatic gap adjusting upper oil cavitie, the below is the automatic gap adjusting lower oil cavitie, the turriform pull back spring is housed in the lower oil cavitie, the brake shoe automatic gap adjusting dish outside is with transfers crack dish oil seal washer, between the automatic gap adjusting plug of lower end and the housing that is connected, accompany the automatic gap adjusting packing ring, the hole that upper and lower break-through is arranged in the middle of the brake shoe automatic gap adjusting dish is equipped with in the hole and is transferred crack dish steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234184 CN2231992Y (en) | 1995-06-22 | 1995-06-22 | Brake device by inertia for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234184 CN2231992Y (en) | 1995-06-22 | 1995-06-22 | Brake device by inertia for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2231992Y true CN2231992Y (en) | 1996-07-31 |
Family
ID=33878176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95234184 Expired - Fee Related CN2231992Y (en) | 1995-06-22 | 1995-06-22 | Brake device by inertia for car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2231992Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638088B (en) * | 2008-07-29 | 2013-06-19 | 曼卡车和巴士股份公司 | Braking device for a motor vehicle activated by compressing a medium |
-
1995
- 1995-06-22 CN CN 95234184 patent/CN2231992Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638088B (en) * | 2008-07-29 | 2013-06-19 | 曼卡车和巴士股份公司 | Braking device for a motor vehicle activated by compressing a medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |