CN203410445U - Parallel central valve type automobile brake master cylinder - Google Patents
Parallel central valve type automobile brake master cylinder Download PDFInfo
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- CN203410445U CN203410445U CN201320261056.3U CN201320261056U CN203410445U CN 203410445 U CN203410445 U CN 203410445U CN 201320261056 U CN201320261056 U CN 201320261056U CN 203410445 U CN203410445 U CN 203410445U
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Abstract
The utility model discloses a parallel central valve type automobile brake master cylinder, which comprises an upper part of a cylinder block, a lower part of the cylinder block, a left master cylinder, a right master cylinder and a force transmission mechanism, wherein the force transmission mechanism is arranged in the upper part of the cylinder block, and is capable of transferring the thrust from a push rod and a vacuum booster to the left master cylinder and the right master cylinder which are parallel through the push rod; the structures of the left master cylinder and the right master cylinder are basically the same, the left master cylinder and the right master cylinder are symmetrically arranged in the lower part of the cylinder block, the mechanical thrust from the push rod is converted and amplified to the hydraulic force, and then is transmitted to each wheel cylinder and each wheel brake by an oil outlet through a brake pipeline; the upper part of the cylinder block is fixedly connected with the lower part of the cylinder block. According to the utility model, by adopting the parallel dual-cylinder structures, the two brake hydraulic loops work independently, when the oil pressure of one cylinder cannot be established, the other cylinder is hardly influenced; a longitudinal distance of the brake master cylinder is remarkably shortened, requirements on a space of an engine cabin are reduced; the types of the parts are reduced, the processing cost is reduced, and the parallel central valve type automobile brake master cylinder has the advantages of very good universality and wide application prospect.
Description
Technical field
The utility model belongs to automobile brake technical field, specifically a kind of for brake system of car, especially the center valve type vehicle brake master cylinder arranged side by side of anti-skid brake system.
Background technology
Master brake cylinder is the critical component in brake system of car.Its effect is that the piston forward that the effect by treadle effort promotes in master cylinder moves, and makes master brake cylinder produce hydraulic coupling, and the oil outlet by master cylinder is to whole brake system of car conveying liquid pressure, thereby realizes the braking of automobile.
Common master brake cylinder is compensation cellular type structure, referring to Chinese patent ZL201120370655.X, ZL200720113843.8 and ZL201120496915.8.When not working, the epitrochoidal chamber of master cylinder communicates with lubricating cup by the compensation orifice of its casing wall, guarantees the conveying of braking liquid.During braking, push rod promotes the piston advances forward of connecting in master cylinder, drives leather cup forward by forming annular seal space after compensation orifice, produces hydraulic pressure.Found a capital at every turn and press leather cup by compensation orifice once, be unfavorable for the durable use of leather cup.
Center valve type brake main cylinder is the necessary supporting technology of anti-lock braking system in automobiles (ABS system).In central valve master cylinder arrangement, being different from the sealing means of common master cylinder completely, is that a valve mechanism is set at piston center.This mechanism forms by packing central valve spring, center spool, the valve part in piston and the spring perch being contained on piston into.When inoperative, valve, in normally open, makes epitrochoidal chamber communicate with fuel supply chamber.During braking push rod promote piston advances forward ，Er center spool under the effect of central valve spring relatively piston and valve part move backward, make valve closing, produce hydraulic pressure.Under ABS effect, hydraulic pressure is along with the signal of wheel speed sensors is constantly adjusted hydraulic pressure, in case wheel lockup.Central valve master brake cylinder has improved smoothness, alerting ability and reliability compared with compensation orifice master cylinder, has improved service life.As Chinese patent ZL200910116370.0, ZL201220430337.2 and ZL201220422085.9, their structure all belongs to the master brake cylinder of center valve type structure.
Yet the master brake cylinder that existing hydraulic braking system for automobile adopts all belongs to twin-tub series brake master cylinder.Series brake master cylinder exists many defects.As after automobile hydraulic single channel leakage loss, during automobile brake, the stroke of brake pedal will increase, and vehicle brake efficacy is declined, and the fear that easily causes navigating mate is faulty operation even, thereby cause the generation of traffic accident.Although can realize relatively independent work on two hydraulic circuit surfaces, the first loop exists certain impact to the manipulation of second servo loop.In addition, the fore-and-aft distance of series type master brake cylinder is longer, takies larger machinery space space.The disclosed master brake cylinder of Chinese patent of enumerating as above-mentioned, their structure all belongs to series brake master cylinder.
Summary of the invention
The purpose of this utility model is to provide a kind of block form center valve type brake main cylinder, overcome not durable, the damageable shortcoming of tradition compensation cellular type master brake cylinder, solve can not completely realizing and working alone of two loops of twin-tub series brake master cylinder, on the foundation of the push rod stroke of another pipeline and oil pressure, there is the defect of impact in the leakage loss of a pipeline, can shorten the axial distance of master brake cylinder simultaneously, reduce taking of machinery space space, and can be applicable to well anti-lock braking system in automobiles.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of center valve type vehicle brake master cylinder arranged side by side, comprise cylinder body top 1., inferior part of the cylinder block 2., left master cylinder 3., right master cylinder 4. with force transmission mechanism 5., wherein, force transmission mechanism be 5. located at cylinder body top 1. in, by the thrust from push rod and vacuum booster by push rod 1 pass to left and right left master cylinder arranged side by side 3. with right master cylinder 4.; 2. 4. 3. left master cylinder be positioned at inferior part of the cylinder block with right master cylinder, push rod 1 transmitted to the mechanical thrust coming and change and be enlarged into hydraulic coupling, then by oil outlet, through brake piping, is transferred to each wheel cylinder and car side brake; 2. 1. cylinder body top be fastenedly connected by fix screw 8 and spring washer 9 with inferior part of the cylinder block.
1. described cylinder body top comprise upper cylinder body 10, guard shield 2 and back-up ring 3, the buckle that guard shield 2 forms by lower end is fixed on the upper end of upper cylinder body 10, effect is the isolation that keeps upper cylinder body 10 inner and extraneous, and to maintain the clean of cylinder interior, back-up ring 3 for fixing force transfer mechanism 5..
5. described force transmission mechanism comprises push rod 1, top board 4, balance plate 5, left pressing plate 6 and right pressing plate 25, and the 4 upper surfaces contacts of push rod 1 lower end and top board are connected, and then the power that vacuum booster is transmitted and displacement pass to top board 4 by push rod 1; Top board 4 lower surfaces are connected with balance plate 5 upper surface contacts, and the power transmitting and displacement are passed to balance plate 5; 3. and 4. two of 5 left and right of balance plate contact head is connected with the upper end in contact of left pressing plate 6 and right pressing plate 25 respectively, and the power transmitting and displacement are passed to left and right two pressing plates 6 and 25, and then passes to left and right two master cylinders;
Preferably, in order to eliminate power transmission inequality and the stability decreases causing due to right alignment, in above-mentioned contact position, be respectively equipped with paired hemisphere jut and groove, between successively mutually top connect.
2. described inferior part of the cylinder block is lower cylinder body 12, cylinder body top 1. and inferior part of the cylinder block have gasket seal 11 between 2., there are some screws at the place of combining, fastening by screw 8 and spring washer 9.
3. 4. structure is basic identical with right master cylinder for described left master cylinder, is arranged symmetrically in inferior part of the cylinder block inside 2..
For left master cylinder 3., by parts such as left piston 7, left hole circlip 13, left limit ring 14, left piston secontary cup 15, left back-up ring 16, left limit pin 17, left primary cup 18, left valve barrel parts 19, LC spool 20, left spring seat 21, LC valve spring 22, left return spring 23 and left spring limit bases 24, formed;
Left valve barrel parts 19 are arranged on the lower end cavity inside of left piston 7, and between LC spool 20, form valve port gap;
Withstand on the stepped shaft of LC spool 20 lower ends the upper end of LC valve spring 22, and lower end is pressed on the inside face of left spring seat 21;
Left spring seat 21 is fixed on left piston 7 lower end outer walls by the buckle of self upper end;
The above-mentioned left spring seat 21 that packs LC valve spring 22, LC spool 20, left valve barrel parts 19 and left piston 7 bottoms in left piston 7 into, in left piston 7, be formed centrally a valve mechanism: in inoperative, valve, in normally open, is connected left fuel supply chamber A and left epitrochoidal chamber B; During braking, 5. force transmission mechanism promotes left piston 7 and travels forward, and makes valve closing, produces hydraulic pressure;
Left primary cup 18 and left piston secontary cup 15 lay respectively on the stepped shaft of left piston 7 and left limit ring 14, for sealing left epitrochoidal chamber B and left fuel supply chamber A;
Left circlip for bore 13 is placed in the groove of lower cylinder body 12, for locating left limit ring 14, thus fixing left piston 7.
For right cylinder body 4., by parts such as right piston 26, right circlip for bore 27, right limit ring 28, right piston pair leather cup 29, right back-up ring 30, right limit pin 31, right primary cup 32, right valve barrel parts 33, right heart spool 34, right spring perch 35, right heart valve spring 36, right return spring 37 and right spring limit bases 38, formed; Structure function is 3. identical with left master cylinder separately for it.
4. 3. described left master cylinder have four oil pockets in inside with right master cylinder, i.e. left fuel supply chamber A, left epitrochoidal chamber B, right fuel supply chamber D, right epitrochoidal chamber E; Left fuel supply chamber A and right fuel supply chamber D are connected with left fuel feed hole G, right fuel feed hole H respectively, and effect provides braking liquid for left epitrochoidal chamber B and right epitrochoidal chamber E; Left epitrochoidal chamber B and right epitrochoidal chamber E are connected with left oil outlet C, right oil outlet F respectively, and effect is when braking, and in this cylinder, can produce hydraulic pressure, and export by left oil outlet C and right oil outlet F.
Working process of the present utility model is:
Initial condition, be that the utility model is not when work, left master cylinder forms dimension chain by lower cylinder body 12, left circlip for bore 13, left limit ring 14, left back-up ring 16, left limit pin 17, left piston 7, LC spool 20 and left valve barrel parts 19 in 3., make to form gap between LC spool 20 and left valve barrel parts 19, i.e. valve port gap.Valve port gap makes left master cylinder left epitrochoidal chamber B 3. communicate with left fuel supply chamber A, and hydraulic pressure is now zero.Because right master cylinder is 4. with left master cylinder, 3. structure is identical, so now the right fuel supply chamber D of right master cylinder in 4. and the hydraulic pressure of right epitrochoidal chamber E are also zero.Now the hydraulic pressure of the left oil outlet C of master brake cylinder and the output of right oil outlet F is zero.
When automobile brake, chaufeur is stepped on brake pedal, treadle effort is passed to push rod 1 of the present utility model after amplifying by automobile brake pedal lever and vacuum booster, make push rod 1 to direction motion in cylinder, power and displacement are passed to left pressing plate 6 and right pressing plate 25 by top board 4 and balance plate 5 successively.
When two brake circuits of automobile in order, during without leakage of oil, symmetry due to two cylinders, the application force that left pressing plate 6 and right pressing plate 25 give balance plate 5 equates, thereby balance plate 5 is to left pressing plate 6 and the identical antagonistic force of right pressing plate 25 allocated size, promotes left piston 7 and right piston 26 and travels forward.3. left master cylinder is made a concrete analysis of: left piston 7 travels forward, left limit pin 17 travels forward with left piston 7, has departed from the restriction of left back-up ring 16, and LC spool 20 is under the promotion of LC valve spring 22, left piston 7 moves backward relatively, valve port gap is decreased to and closes gradually, makes left epitrochoidal chamber B and left fuel supply chamber A isolation, and left piston 7 moves forward, liquid in left epitrochoidal chamber B produces pressure, and output to brake piping by left oil outlet C, and then make to take turns cylinder working, wheel produces braking.Right master cylinder is 4. identical with left master cylinder principle of work 3., and the application force that the left piston 7 of left and right master cylinder and right piston 26 are subject to is identical, thereby the oil pressure of left oil outlet C and right oil outlet F output is identical.When brake off, left piston 7 and right piston 26 arrive reference position next time in each self-applying of left return spring 23 and right return spring 37, make this brake master cylinder piston return to initial condition.
Especially, the utility model can break down or produce action during leakage at a certain brake piping of automobile, and the impact on another master cylinder can be reduced to minimum, and can significantly reduce push rod stroke, shortens brake response time.Make a concrete analysis of as follows: as when right master cylinder is 4. because pipeline liquid leakage or other faults can not finely be set up oil pressure, the power that now right pressing plate 25 acts on balance plate 5 will be far smaller than left pressing plate 6 and act on the power of balance plate 5, thereby balance plate 5 will run-off the straight, form the situation of " right low left high ", thereby transmit a left pressing plate 6 by transmitting from push rod 1 power of coming, and then act on left piston 7,3. left master cylinder is worked.And conventional tandem master brake cylinder is when a certain cylinder oil pressure cannot be set up, needs that piston is pushed into this Cylinder bottom and just can make another cylinder set up oil pressure.Can obviously find out, the utility model is under this situation, and the stroke of push rod 1 is much smaller than the push rod stroke of conventional tandem master brake cylinder, thereby reaction is more rapid, for emergency braking tries to gain time precious to one.
Advantage of the present utility model and beneficial effect are:
1. adopt two juxtaposed cylinders structure, two brake fluid pressure loops work alone separately, and the oil pressure of a certain cylinder cannot be set up the almost not impact on another cylinder.
2. the structure of two juxtaposed cylinders formula can significantly shorten the fore-and-aft distance of master brake cylinder, reduces the requirement to machinery space space.
3. due to the isostructural existence of balance plate, can to the application force of left and right two master cylinder pistons, distribute well, and when a certain cylinder oil pressure cannot be set up, can significantly shorten brake push rod stroke, reduce the brake response time of master brake cylinder.
4. adopt advanced center valve type structure, can improve the durability of piston cup, improve smoothness, alerting ability and the reliability of master cylinder work, improved the service life of master cylinder piston machine leather cup, and can be applicable to well anti-lock braking system in automobiles.
5. adopt left and right two cylinders to be arranged symmetrically with, reduced part kind, reduced tooling cost, alleviated service expenditure, have good commonality, maintainability, has a extensive future.
Accompanying drawing explanation
Fig. 1 is main cutaway view of the present utility model;
Fig. 2 is the I-I of oil feed groove place section-drawing in Fig. 1;
Fig. 3 is the local amplification assumption diagram at J place in Fig. 1;
Fig. 4 is the cutaway view of left piston 7;
Flow direction when Fig. 5 is initial condition, valve opening, A and the intercommunication of B chamber;
Flow direction when Fig. 6 is braking mode, valve closing, A and B chamber are obstructed;
Fig. 7 is that the axle that waits of the utility model integral body is surveyed view.
In figure:
1. 2. 3. 4. 5. force transmission mechanism of right master cylinder of left master cylinder of inferior part of the cylinder block of cylinder body top
1, push rod 2, guard shield 3, back-up ring 4, top board 5, balance plate 6, left pressing plate 7, left piston
8, fix screw 9, spring washer 10, upper cylinder body 11, gasket seal 12, lower cylinder body
13, left circlip for bore 14, left limit ring 15, left piston secontary cup 16, left back-up ring 17, left limit pin
18, left primary cup 19, left valve barrel parts 20, LC spool 21 left spring seats 22, LC valve spring
23, left return spring 24, left spring limit base 25, right pressing plate 26, right piston 27, right circlip for bore
28, right limit ring 29, right piston pair leather cup 30, right back-up ring 31, right limit pin 32, right primary cup
33, right valve barrel parts 34, right heart spool 35, right spring perch 36, right heart valve spring 37, right return spring
38, right spring limit base
A, left fuel supply chamber B, left epitrochoidal chamber C, left oil outlet D, right fuel supply chamber E, right epitrochoidal chamber
F, right oil outlet G, left fuel feed hole H, right fuel feed hole
The specific embodiment
Below in conjunction with accompanying drawing, utility model is described in detail.
Fig. 1 is main cutaway view of the present utility model, visible a kind of center valve type vehicle brake master cylinder arranged side by side of the present utility model, comprise cylinder body top 1., inferior part of the cylinder block 2., left master cylinder 3., right master cylinder 4. with force transmission mechanism 5., wherein, force transmission mechanism be 5. located at cylinder body top 1. in, by the thrust from push rod and vacuum booster by push rod 1 pass to left and right left master cylinder arranged side by side 3. with right master cylinder 4.; 2. 4. 3. left master cylinder be positioned at inferior part of the cylinder block with right master cylinder, push rod 1 transmitted to the mechanical thrust coming and change and be enlarged into hydraulic coupling, then by oil outlet, through brake piping, is transferred to each wheel cylinder and car side brake; 2. 1. cylinder body top be fastenedly connected by fix screw 8 and spring washer 9 with inferior part of the cylinder block.
1. described cylinder body top comprise upper cylinder body 10, guard shield 2 and back-up ring 3, the buckle that guard shield 2 forms by lower end is fixed on the upper end of upper cylinder body 10, effect is the isolation that keeps upper cylinder body 10 inner and extraneous, and to maintain the clean of cylinder interior, back-up ring 3 for fixing force transfer mechanism 5..
5. described force transmission mechanism comprises push rod 1, top board 4, balance plate 5, left pressing plate 6 and right pressing plate 25, and the 4 upper surfaces contacts of push rod 1 lower end and top board are connected, and then the power that vacuum booster is transmitted and displacement pass to top board 4 by push rod 1; Top board 4 lower surfaces are connected with balance plate 5 upper surface contacts, and the power transmitting and displacement are passed to balance plate 5; 3. and 4. two of 5 left and right of balance plate contact head is connected with the upper end in contact of left pressing plate 6 and right pressing plate 25 respectively, and the power transmitting and displacement are passed to left and right two pressing plates 6 and 25, and then passes to left and right two master cylinders;
Preferably, in order to eliminate power transmission inequality and the stability decreases causing due to right alignment, in above-mentioned contact position, be respectively equipped with paired hemisphere jut and groove, between successively mutually top connect.
2. described inferior part of the cylinder block is lower cylinder body 12, cylinder body top 1. and inferior part of the cylinder block have gasket seal 11 between 2., there are some screws at the place of combining, fastening by screw 8 and spring washer 9.
3. 4. structure is basic identical with right master cylinder for described left master cylinder, is arranged symmetrically in inferior part of the cylinder block inside 2..
For left master cylinder 3., by parts such as left piston 7, left hole circlip 13, left limit ring 14, left piston secontary cup 15, left back-up ring 16, left limit pin 17, left primary cup 18, left valve barrel parts 19, LC spool 20, left spring seat 21, LC valve spring 22, left return spring 23 and left spring limit bases 24, formed;
As shown in Figure 4, its upper end is fixedly connected with left pressing plate 6 structure of left piston 7, and left limit pin 17 is through in the strip hole of left piston 7, as shown in Figure 2; LC spool 20 is placed in the base apertures of left piston 7, and top contacts with left limit pin 17;
Left valve barrel parts 19 are arranged on the lower end cavity inside of left piston 7, and between LC spool 20, form valve port gap;
Withstand on the stepped shaft of LC spool 20 lower ends the upper end of LC valve spring 22, and lower end is pressed on the inside face of left spring seat 21;
Left spring seat 21 is fixed on left piston 7 lower end outer walls by the buckle of self upper end;
In conjunction with Fig. 1 and Fig. 3, the above-mentioned left spring seat 21 that packs LC valve spring 22, LC spool 20, left valve barrel parts 19 and left piston 7 bottoms in left piston 7 into, in left piston 7, be formed centrally a valve mechanism: in inoperative, valve, in normally open, is connected left fuel supply chamber A and left epitrochoidal chamber B; During braking, 5. force transmission mechanism promotes left piston 7 and travels forward, and makes valve closing, produces hydraulic pressure;
Left primary cup 18 and left piston secontary cup 15 lay respectively on the stepped shaft of left piston 7 and left limit ring 14, for sealing left epitrochoidal chamber B and left fuel supply chamber A;
Left circlip for bore 13 is placed in the groove of lower cylinder body 12, for locating left limit ring 14, thus fixing left piston 7.
For right cylinder body 4., by parts such as right piston 26, right circlip for bore 27, right limit ring 28, right piston pair leather cup 29, right back-up ring 30, right limit pin 31, right primary cup 32, right valve barrel parts 33, right heart spool 34, right spring perch 35, right heart valve spring 36, right return spring 37 and right spring limit bases 38, formed; Structure function is 3. identical with left master cylinder separately for it.
4. 3. described left master cylinder have four oil pockets in inside with right master cylinder, i.e. left fuel supply chamber A, left epitrochoidal chamber B, right fuel supply chamber D, right epitrochoidal chamber E; Left fuel supply chamber A and right fuel supply chamber D are connected with left fuel feed hole G, right fuel feed hole H respectively, and as shown in Figure 7, effect provides braking liquid for left epitrochoidal chamber B and right epitrochoidal chamber E in its position; Left epitrochoidal chamber B and right epitrochoidal chamber E are connected with left oil outlet C, right oil outlet F respectively, and effect is when braking, and in this cylinder, can produce hydraulic pressure, and export by left oil outlet C and right oil outlet F.
Shown in Fig. 5 and Fig. 6, working process of the present utility model is:
Initial condition, be that the utility model is not when work, left master cylinder forms dimension chain by lower cylinder body 12, left circlip for bore 13, left limit ring 14, left back-up ring 16, left limit pin 17, left piston 7, LC spool 20 and left valve barrel parts 19 in 3., make to form gap between LC spool 20 and left valve barrel parts 19, i.e. valve port gap.Valve port gap makes left master cylinder left epitrochoidal chamber B 3. communicate with left fuel supply chamber A, and hydraulic pressure is now zero.Because right master cylinder is 4. with left master cylinder, 3. structure is identical, so now the right fuel supply chamber D of right master cylinder in 4. and the hydraulic pressure of right epitrochoidal chamber E are also zero.Now the hydraulic pressure of the left oil outlet C of master brake cylinder and the output of right oil outlet F is zero.
When automobile brake, chaufeur is stepped on brake pedal, treadle effort is passed to push rod 1 of the present utility model after amplifying by automobile brake pedal lever and vacuum booster, make push rod 1 to direction motion in cylinder, power and displacement are passed to left pressing plate 6 and right pressing plate 25 by top board 4 and balance plate 5 successively.
When two brake circuits of automobile in order, during without leakage of oil, symmetry due to two cylinders, the application force that left pressing plate 6 and right pressing plate 25 give balance plate 5 equates, thereby balance plate 5 is to left pressing plate 6 and the identical antagonistic force of right pressing plate 25 allocated size, promotes left piston 7 and right piston 26 and travels forward.3. left master cylinder is made a concrete analysis of: left piston 7 travels forward, left limit pin 17 travels forward with left piston 7, has departed from the restriction of left back-up ring 16, and LC spool 20 is under the promotion of LC valve spring 22, left piston 7 moves backward relatively, valve port gap is decreased to and closes gradually, makes left epitrochoidal chamber B and left fuel supply chamber A isolation, and left piston 7 moves forward, liquid in left epitrochoidal chamber B produces pressure, and output to brake piping by left oil outlet C, and then make to take turns cylinder working, wheel produces braking.Right master cylinder is 4. identical with left master cylinder principle of work 3., and the application force that the left piston 7 of left and right master cylinder and right piston 26 are subject to is identical, thereby the oil pressure of left oil outlet C and right oil outlet F output is identical.When brake off, left piston 7 and right piston 26 arrive reference position next time in each self-applying of left return spring 23 and right return spring 37, make this brake master cylinder piston return to initial condition.
Especially, the utility model can break down or produce action during leakage at a certain brake piping of automobile, and the impact on another master cylinder can be reduced to minimum, and can significantly reduce push rod stroke, shortens brake response time.Make a concrete analysis of as follows: as when right master cylinder is 4. because pipeline liquid leakage or other faults can not finely be set up oil pressure, the power that now right pressing plate 25 acts on balance plate 5 will be far smaller than left pressing plate 6 and act on the power of balance plate 5, thereby balance plate 5 will run-off the straight, form the situation of " right low left high ", thereby transmit a left pressing plate 6 by transmitting from push rod 1 power of coming, and then act on left piston 7,3. left master cylinder is worked.And conventional tandem master brake cylinder is when a certain cylinder oil pressure cannot be set up, needs that piston is pushed into this Cylinder bottom and just can make another cylinder set up oil pressure.Can obviously find out, the utility model is under this situation, and the stroke of push rod 1 is much smaller than the push rod stroke of conventional tandem master brake cylinder, thereby reaction is more rapid, for emergency braking tries to gain time precious to one.
Above-described embodiment is only for illustrating the utility model; wherein the structure of each parts, connection mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (7)
1. a center valve type vehicle brake master cylinder arranged side by side, comprises cylinder body top (1.), inferior part of the cylinder block (2.), left master cylinder (3.), right master cylinder (4.) and force transmission mechanism (5.), it is characterized in that:
Described force transmission mechanism (5.) is located in cylinder body top (1.), and the thrust from push rod and vacuum booster is passed to left and right left master cylinder (3.) arranged side by side and right master cylinder (4.) by push rod (1); Described left master cylinder (3.) and right master cylinder (4.) structure are basic identical, be arranged symmetrically in the inside of inferior part of the cylinder block (2.), the mechanical thrust that push rod (1) transmission is come changes and is enlarged into hydraulic coupling, then by oil outlet, through brake piping, is transferred to each wheel cylinder and car side brake; Cylinder body top (1.) is fixedly connected with inferior part of the cylinder block (2.).
2. a kind of center valve type vehicle brake master cylinder arranged side by side according to claim 1, is characterized in that:
Described cylinder body top (1.) comprises upper cylinder body (10), guard shield (2) and back-up ring (3), and the buckle that guard shield (2) forms by lower end is fixed on the upper end of upper cylinder body (10), and force transmission mechanism (5.) is fixing by back-up ring (3).
3. a kind of center valve type vehicle brake master cylinder arranged side by side according to claim 1, is characterized in that:
Described force transmission mechanism (5.) comprises push rod (1), top board (4), balance plate (5), left pressing plate (6) and right pressing plate (25), push rod (1) lower end is connected with the contact of top board (4) upper surface, and the power that vacuum booster is transmitted and displacement pass to top board (4) by push rod (1);
Top board (4) lower surface is connected with the contact of balance plate (5) upper surface, and the power transmitting and displacement are passed to balance plate (5);
Two contact heads in balance plate (5) left and right are connected with the upper end in contact of right pressing plate (25) with left pressing plate (6) respectively, and the power transmitting and displacement are passed to left and right two pressing plates (6,25), and then pass to left and right two master cylinders (3., 4.).
4. a kind of center valve type vehicle brake master cylinder arranged side by side according to claim 3, is characterized in that:
The described junction that respectively contacts is respectively equipped with paired hemisphere jut and groove, and top connects mutually successively.
5. a kind of center valve type vehicle brake master cylinder arranged side by side according to claim 1, is characterized in that:
Described left master cylinder (3.) is comprised of parts such as left piston (7), left hole circlip (13), left limit ring (14), left piston secontary cup (15), left back-up ring (16), left limit pin (17), left primary cup (18), left valve barrel parts (19), LC spool (20), left spring seat (21), LC valve spring (22), left return spring (23) and left spring limit bases (24);
Left piston (7) upper end is fixedly connected with left pressing plate (6), and left limit pin (17) is through in the strip hole of left piston (7); LC spool (20) is placed in the base apertures of left piston (7), and top contacts with left limit pin (17);
Left valve barrel parts (19) are arranged on the lower end cavity inside of left piston (7), and form valve port gap between LC spool (20);
Withstand on the stepped shaft of LC spool (20) lower end the upper end of LC valve spring (22), and lower end is pressed on the inside face of left spring seat (21);
Left spring seat (21) is fixed on the outer wall of left piston (7) lower end by the buckle of self upper end.
6. according to the center valve type vehicle brake master cylinder a kind of arranged side by side described in claim 1 any one, it is characterized in that:
Described left master cylinder (3.) and right master cylinder (4.) inside have four oil pockets, i.e. left fuel supply chamber (A), left epitrochoidal chamber (B), right fuel supply chamber (D), right epitrochoidal chamber (E); Described left fuel supply chamber (A) and right fuel supply chamber (D) are connected with left fuel feed hole (G), right fuel feed hole (H) respectively, for left epitrochoidal chamber (B) and right epitrochoidal chamber (E) provide braking liquid; Described left epitrochoidal chamber (B) and right epitrochoidal chamber (E) are connected with left oil outlet (C), right oil outlet (F) respectively, produce hydraulic pressure when braking, and by left oil outlet (C) and right oil outlet (F) output.
7. according to the center valve type vehicle brake master cylinder a kind of arranged side by side described in any one in claim 1 to 6, it is characterized in that:
The described left spring seat (21) that packs LC valve spring (22), LC spool (20), left valve barrel parts (19) and left piston (7) bottom in left piston (7) into, in left piston (7), be formed centrally a valve mechanism: in inoperative, valve, in normally open, is connected left fuel supply chamber (A) and left epitrochoidal chamber (B); During braking, force transmission mechanism (5.) promotes left piston (7) and travels forward, and makes valve closing, produces hydraulic pressure;
Left return spring (23) is positioned at left epitrochoidal chamber (B), and upper end heads on the left spring seat (21) of left piston (7) bottom, and it is upper that lower end is pressed on left spring limit base (24), and left spring limit base (24) is placed in the bottom of left epitrochoidal chamber (B);
Left circlip for bore (13) is placed in the groove of lower cylinder body (12), for locating left limit ring (14), thus fixing left piston (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320261056.3U CN203410445U (en) | 2013-05-14 | 2013-05-14 | Parallel central valve type automobile brake master cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320261056.3U CN203410445U (en) | 2013-05-14 | 2013-05-14 | Parallel central valve type automobile brake master cylinder |
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| CN203410445U true CN203410445U (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320261056.3U Expired - Fee Related CN203410445U (en) | 2013-05-14 | 2013-05-14 | Parallel central valve type automobile brake master cylinder |
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| CN (1) | CN203410445U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103241230A (en) * | 2013-05-14 | 2013-08-14 | 吉林大学 | Parallel-central-valve type automobile brake master cylinder |
| CN114734972A (en) * | 2022-04-21 | 2022-07-12 | 湘潭大学 | Automobile braking system based on parallel brake master cylinders and working method thereof |
-
2013
- 2013-05-14 CN CN201320261056.3U patent/CN203410445U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103241230A (en) * | 2013-05-14 | 2013-08-14 | 吉林大学 | Parallel-central-valve type automobile brake master cylinder |
| CN103241230B (en) * | 2013-05-14 | 2015-04-08 | 吉林大学 | Parallel-central-valve type automobile brake master cylinder |
| CN114734972A (en) * | 2022-04-21 | 2022-07-12 | 湘潭大学 | Automobile braking system based on parallel brake master cylinders and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20140514 |