CN204437133U - A kind of modified model brake master cylinder - Google Patents
A kind of modified model brake master cylinder Download PDFInfo
- Publication number
- CN204437133U CN204437133U CN201520000385.1U CN201520000385U CN204437133U CN 204437133 U CN204437133 U CN 204437133U CN 201520000385 U CN201520000385 U CN 201520000385U CN 204437133 U CN204437133 U CN 204437133U
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- piston
- way valve
- master cylinder
- filler opening
- brake master
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Abstract
The utility model discloses a kind of modified model brake master cylinder, comprise cylinder body, inner chamber is provided with in cylinder body, front spring is provided with successively in described cavity, first one-way valve, secondary piston, rear spring, second one-way valve and back piston assembly, two filler openings are provided with outside described cylinder body, filler opening seal ring is provided with in filler opening, filler opening is communicated with inner chamber by inflow pipeline, hull outside is provided with oil outlet, oil outlet communicates with inner chamber, oil outlet place is provided with stifle, improve piston structure, before employing, back piston is all with one-way valve, without the need to processing ￠ 0.7 compensate opening, good braking effect, processing technology is simple.
Description
Technical field
The utility model relates to clutch field, particularly a kind of modified model brake master cylinder.
Background technique
Brake master cylinder assy is the indispensable part of brake system of car, is critical piece in brake-operating system.When braking, apply pressure to the brake fluid in brake master cylinder, pressure is delivered on each wheel wheelcylinder piston by pipeline by liquid, piston actuated brake disc, thus produce huge frictional force, make vehicle deceleration or brake, so brake master cylinder is a vitals of braking system.The structural behaviour of brake master cylinder directly has influence on the working efficiency of break, and in prior art, brake master cylinder easily occurs that sealing is poor, oil circuit flows not in time, and the problem that piston movement cannot reset in time.
In prior art, when brake master cylinder works, vacuum booster push rod promotes guide piston and moves forward, and main apron is by compensate opening (0.7 aperture), and set up high pressure, pressure oil is exported by oil outlet; During current back piston return, fluid flows back to lubricating cup by compensate opening, therefore needs to process compensate opening on cylinder body, and difficulty of processing is large, and yield rate is low.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of modified model brake master cylinder, improves piston structure, adopts forward and backward piston all with one-way valve, to solve the above-mentioned multinomial defect caused in prior art.
For achieving the above object, the utility model provides following technological scheme: a kind of modified model brake master cylinder, comprise cylinder body, inner chamber is provided with in cylinder body, front spring is provided with successively in described cavity, first one-way valve, secondary piston, rear spring, second one-way valve and back piston assembly, secondary piston is provided with groove, first backing pin fixes through groove and inner chamber, secondary piston is provided with cavity near the side of the first one-way valve, first one-way valve is arranged in the first cavity, back piston is provided with through hole, fixed through through hole and inner chamber by the second backing pin, described back piston assembly is provided with cavity near the side of the second one-way valve, second one-way valve is arranged in the second cavity.Be provided with between secondary piston and back piston assembly and extend screw and spring seat, extension screw is threaded with secondary piston through the bottom of spring seat, phase clamping outside the other end of spring seat and the cavity of back piston assembly, rear spring is enclosed within the outside extending screw and piston spring seat, two filler openings are provided with outside described cylinder body, filler opening place is provided with chock plug and filler opening seal ring, filler opening is communicated with inner chamber by inflow pipeline, hull outside is provided with oil outlet, oil outlet communicates with inner chamber, and oil outlet place is provided with stifle.
Preferably, described back piston assembly comprises back piston, thrust washer, guide sleeve and piston rod, is provided with guide sleeve apron in guide sleeve, and piston rod, through guide sleeve, guide sleeve apron and thrust washer, is provided with the second backing pin between thrust washer and back piston.
Preferably, described first one-way valve and the second one-way valve are fixed in the first cavity and the second cavity respectively by check valve spring and collar.
Preferably, be provided with filler opening seal ring in described filler opening, filler opening place is also provided with catch, and catch is provided with oil inlet hole.
Preferably, the side-walls of described secondary piston and back piston is socketed with apron.
Adopt the beneficial effect of above technological scheme to be: in the utility model, the structure of modified model brake master cylinder avoids traditional brake master cylinder structure, cylinder body, without the need to processing 0.7 compensate opening, improves piston structure, adopts forward and backward piston all with one-way valve.In this modified model brake master cylinder, the piston rod at back piston assembly place is exposed at outside cylinder body, assemble with external vacuum booster, imbed in housing, make vacuum booster push rod withstand back piston, when brake master cylinder works, vacuum booster push rod promotes piston rod, back piston and secondary piston are moved forward, closed check valve, sets up high pressure, and pressure oil is exported by oil outlet; During current back piston return, one-way valve opens fluid is flowed back to by oil-feed through hole.
Accompanying drawing explanation
Fig. 1 is the utility model plan view;
Fig. 2 is the utility model plan view;
Fig. 3 be in Fig. 2 A-A to sectional view;
Fig. 4 be in Fig. 1 B-B to sectional view;
Fig. 5 be in Fig. 1 C-C to sectional view.
Wherein, 1--cylinder body, 2--piston rod, 3--guide sleeve, 4--inflow pipeline, 5--guide sleeve apron, 6--thrust washer, 7--second backing pin, 8--back piston, 9--apron, 10--first one-way valve, 102--second one-way valve, 11--check valve spring, 12--collar, 13--piston spring seat, 14--extend screw, 15--rear spring, 16--secondary piston, 17--filler opening, 18--first backing pin, 19--front spring, 20--filler opening seal ring, 21--chock plug, 22--catch, 23--oil inlet hole, 24--protecting jacket, 25--stifle, 26--oil outlet.
Embodiment
Preferred implementation of the present utility model is described in detail below in conjunction with accompanying drawing.
Composition graphs 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 shows embodiment of the present utility model: a kind of modified model brake master cylinder, comprise cylinder body 1, inner chamber is provided with in cylinder body 1, front spring 19 is provided with successively in described cavity, first one-way valve 10, secondary piston 16, rear spring 15, second one-way valve 102 and back piston 8 assembly, secondary piston 16 is provided with groove, first backing pin 18 fixes through groove and inner chamber, secondary piston 16 is provided with cavity near the side of the first one-way valve 10, first one-way valve 10 is arranged in the first cavity, back piston 8 is provided with through hole, fixed through through hole and inner chamber by the second backing pin 7, described back piston 8 assembly is provided with cavity near the side of the second one-way valve 102, second one-way valve 102 is arranged in the second cavity, be provided with between secondary piston 16 and back piston 8 assembly and extend screw 14 and piston spring seat 13.Extension screw 14 is threaded with secondary piston 16 through the bottom of piston spring seat 13, the other end of piston spring seat 13 is enclosed within outside back piston 8, rear spring 15 is enclosed within the outside extending screw 14 and piston spring seat 13, two filler openings 17 are provided with outside described cylinder body 1, filler opening 17 place is provided with chock plug 21 and filler opening seal ring 20, filler opening 17 is communicated with inner chamber by inflow pipeline 4, hull outside is provided with oil outlet 26, oil outlet 26 communicates with inner chamber, oil outlet 26 place is provided with stifle 25, back piston 8 assembly comprises back piston 8, thrust washer 6, guide sleeve 3 and piston rod 2, guide sleeve apron 95 is provided with in guide sleeve 3, piston rod 2 is through guide sleeve 3, guide sleeve apron 95 and thrust washer 6, the second backing pin 7 is provided with between thrust washer 6 and back piston 8, first one-way valve 10 and the second one-way valve 102 are fixed in the first cavity and the second cavity respectively by check valve spring 11 and collar 12, filler opening seal ring 20 is provided with between filler opening 17 and chock plug 21, filler opening 17 place is also provided with catch, catch is provided with oil inlet hole 23, the side-walls of secondary piston 16 and back piston 8 is socketed with apron 9, the end sleeve of piston rod 2 is connected to protecting jacket 24.
In the utility model, the structure of modified model brake master cylinder avoids traditional brake master cylinder structure, and cylinder body 1, without the need to processing ￠ 0.7 compensate opening, improves piston structure, adopts forward and backward piston 8 all with one-way valve.In this modified model brake master cylinder, the piston rod 2 at back piston 8 assembly place is exposed at outside cylinder body 1, assemble with external vacuum booster, imbed in housing, make vacuum booster push rod withstand back piston 8, when brake master cylinder works, vacuum booster push rod promotes piston rod 2, back piston 8 and secondary piston 16 are moved forward, closed check valve, sets up high pressure, and pressure oil is exported by oil outlet 26; During current back piston 8 return, one-way valve opens fluid is flowed back to by oil-feed through hole.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. a modified model brake master cylinder, comprise cylinder body, inner chamber is provided with in cylinder body, it is characterized in that: in described cavity, be provided with front spring successively, first one-way valve, secondary piston, rear spring, second one-way valve and back piston assembly, secondary piston is provided with groove, first backing pin fixes through groove and inner chamber, secondary piston is provided with cavity near the side of the first one-way valve, first one-way valve is arranged in the first cavity, back piston is provided with through hole, fixed through through hole and inner chamber by the second backing pin, described back piston assembly is provided with cavity near the side of the second one-way valve, second one-way valve is arranged in the second cavity, be provided with between secondary piston and back piston assembly and extend screw and piston spring seat, extension screw is threaded with secondary piston through the bottom of piston spring seat, the other end of piston spring seat is enclosed within outside back piston, rear spring is enclosed within the outside extending screw and piston spring seat, two filler openings are provided with outside described cylinder body, filler opening seal ring and chock plug is provided with in filler opening, filler opening is communicated with inner chamber by inflow pipeline, hull outside is provided with oil outlet, oil outlet communicates with inner chamber, oil outlet place is provided with stifle.
2. modified model brake master cylinder according to claim 1, it is characterized in that: described back piston assembly comprises back piston, thrust washer, guide sleeve and piston rod, guide sleeve apron is provided with in guide sleeve, piston rod, through guide sleeve, guide sleeve apron and thrust washer, is provided with the second backing pin between thrust washer and back piston.
3. modified model brake master cylinder according to claim 1, is characterized in that: described first one-way valve and the second one-way valve are fixed in the first cavity and the second cavity respectively by check valve spring and collar.
4. modified model brake master cylinder according to claim 1, it is characterized in that: described filler opening is provided with filler opening seal ring, filler opening place is also provided with catch, and catch is provided with oil inlet hole.
5. modified model brake master cylinder according to claim 1, is characterized in that: the side-walls of described secondary piston and back piston is socketed with apron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000385.1U CN204437133U (en) | 2015-01-04 | 2015-01-04 | A kind of modified model brake master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000385.1U CN204437133U (en) | 2015-01-04 | 2015-01-04 | A kind of modified model brake master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204437133U true CN204437133U (en) | 2015-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000385.1U Active CN204437133U (en) | 2015-01-04 | 2015-01-04 | A kind of modified model brake master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204437133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565140A (en) * | 2015-01-04 | 2015-04-29 | 芜湖聚达汽车零部件有限公司 | Improved brake master cylinder |
-
2015
- 2015-01-04 CN CN201520000385.1U patent/CN204437133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565140A (en) * | 2015-01-04 | 2015-04-29 | 芜湖聚达汽车零部件有限公司 | Improved brake master cylinder |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |