CN202251577U - Automobile brake master cylinder assembly - Google Patents
Automobile brake master cylinder assembly Download PDFInfo
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- CN202251577U CN202251577U CN2011203309038U CN201120330903U CN202251577U CN 202251577 U CN202251577 U CN 202251577U CN 2011203309038 U CN2011203309038 U CN 2011203309038U CN 201120330903 U CN201120330903 U CN 201120330903U CN 202251577 U CN202251577 U CN 202251577U
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Abstract
Aiming to solve the technical problems that the automobile brake master cylinder assembly in the prior art is difficult to process and manufacture, has low operational reliability, short service life and high use and maintenance cost, the utility model relates to a dual-cavity center valve type automobile brake master cylinder assembly, and provides an automobile brake master cylinder assembly which has a simple structure, is easy to manufacture, has long service life, low use and maintenance cost and high valve port on-off speed, thereby having excellent automobile braking performance. The automobile brake master cylinder assembly includes a cylinder body, a cylinder port covering and sealing structure, a left piston, a right piston, a left piston limit pin structure, a right piston limit pin structure, a left piston return spring, a right piston return spring, a cone valve type left center valve arranged at the left end of the left piston, and a cone valve type right center valve arranged at the left end of the right piston.
Description
Technical field
The utility model relates to the automobile brake technical field, especially relates to a kind of two-chamber centre valve formula automobile braking master cylinder assembly.
Background technique
Brake master cylinder is the heart of braking system, and its effect is the brake fluid output that the brake fluid of low pressure is converted into high pressure.Centre valve formula brake master cylinder assy is to use a kind of very widely brake master cylinder assy at present, and mostly adopts series connection two-chamber formula brake circuit, and braking system adopts the X type to arrange, to improve the reliability of automobile brake., publication number open on October 27th, 2010 is that Chinese patent file that CN201613890U, name are called " a kind of automobile is used brake master cylinder assy " discloses a kind of automobile and uses brake master cylinder assy; Comprise first spring seat, second spring seat, first return spring, second return spring, first piston and second piston; Be respectively equipped with first centre valve, second centre valve on described first piston, second piston; Described first centre valve comprises first sealing gasket, first push rod and the first push rod return spring; First push rod is installed between the first piston and first return spring; The first push rod return spring is installed in a side relative with first return spring on first push rod, and first sealing gasket is installed between first push rod and the first piston; The structure of described second centre valve is identical with the structure of first centre valve.This patent is the same with existing other centre valve formula brake master cylinder assy, and being the sealing surface that adopts elastic sealing gasket promptly the corresponding surface of first piston and second piston here carries out face and contact extrusion-deformation and realize sealing with corresponding valve seat or valve body.Owing to must on corresponding centre valve member, process the structure that installs and fixes gasket seal, and the size of these members is all very little, therefore has manufacturing difficulty, the problem that functional reliability and working life are low; And owing to be to adopt the unilateral contact extrusion-deformation sealing of elastic sealing gasket; It is slow that valve port opens and closes speed; Be unfavorable for the raising of automobile brake perfrmance, be prone to the fatigue damage of elastic packing pad simultaneously and influence operational safety, working life and the working service cost of brake master cylinder assy.
Summary of the invention
The utility model mainly is to solve the existing manufacturing difficulty of existing technology automobile braking master cylinder assembly, and functional reliability and working life are low, the technical problem that the working service cost is high; Provide a kind of simple in structure; Be easy to make, long service life, the working service cost is low; Valve port opens and closes the speed height, so the good a kind of automobile braking master cylinder assembly of automobile brake perfrmance.
The used technological scheme of the utility model is: a kind of automobile braking master cylinder assembly comprises cylinder body, is positioned at the cylinder flap seal structure that is provided with piston hole, left piston, right piston and the corresponding left piston position limit pin structure and the right piston position limit pin structure of cylinder body right-hand member; Wherein left piston be arranged at cylinder body inner chamber and with inner chamber of cylinder block slip motive sealing; The left end of right piston be positioned at inner chamber of cylinder block and with inner chamber of cylinder block slip motive sealing; The piston hole that the right-hand member of right piston passes cylinder flap seal structure links to each other the piston hole slip motive sealing of right piston and cylinder flap seal structure with the automobile brake pedal assembly; Between left piston left end and the inner chamber of cylinder block left end is left brake chamber, is provided with the left piston return spring; Between left piston right-hand member and the right piston left end is right brake chamber, is provided with right piston return spring; Cylinder body is provided with two groups of corresponding with left and right sides brake chamber respectively turnover oil ducts; Said left piston left end is provided with a cone valve type LC valve, and the left end of right piston is provided with the right centre valve of a cone valve type.
In non-braking state, left and right centre valve valve port is in logical oil condition, and left brake chamber and right brake chamber are communicated with corresponding oil inlet passage on the valve body through corresponding centre valve respectively, promptly with corresponding brake fluid liquid container connection.During braking; Brake pedal unit promotion left and right sides piston overcomes return spring elastic force and moves to left; Left and right sides centre valve valve port is closed; Oil inlet passage corresponding on left and right sides brake chamber and the valve body is isolated, and the moved to left actuating pressure of piston of the braking fluid in two brake chambers raises, and gets into corresponding braking line through corresponding oil outlet on the valve body and realize automobile brake.After the power releasing that is applied on the brake petal, left and right sides piston moves to right under the effect of return spring elastic force, and left and right centre valve valve port is opened, and high hydraulic brake fluid is through centre valve backflow brake fluid liquid container, and a complete braking process finishes.The utility model, the centre valve of brake master cylinder assy adopts cone valve structure, valve port be sealed into the line contact sealing between the corresponding metal member; Sealing Q-percentile life is long; Manufacturing simple in structure is easy, and valve port keying speed is fast, helps improving the braking ability of automobile.
As preferably, the inner chamber of said cylinder body is a cylinder hole shape inner chamber, and the right-hand member end of cylindrical hole inner chamber is provided with two circlip draw-in grooves; Said right piston is a step piston, comprise with the right piston left part of inner chamber of cylinder block slip motive sealing and with the right piston right part of the piston hole slip motive sealing of cylinder mouth closure construction, right piston left part diameter is greater than right piston right part diameter; Said cylinder flap seal structure comprise circlip in the outer circlip of cylindrical shape cap seal main body, cap seal, the cap seal and in cap seal the cap seal inner shield ring spring between circlip right-hand member and the cap seal main body left end, be fixed in elastomer seal in the outer elastomer seal of cap seal and the cap seal on the cap seal main body; Wherein the outer elastomer seal of cap seal is located between cap seal main body and inner chamber of cylinder block, and elastomer seal is located between cap seal main body and right piston right part in the cap seal.This preferred version, housing structure is simple, and manufacturing is easy; Cylinder flap seal structure passes through elastomer seal and right piston slip motive sealing in the cap seal, easy processing simple in structure, and functional reliability is good.
As preferably; Said inner chamber of cylinder block is a step cylinder hole shape inner chamber; Comprise cylinder flap seal structure assembly department that is positioned at cylinder body right-hand member end and the braking chamber portion that is positioned at cylinder flap seal structure assembly department left side, the diameter of closure construction assembly department is greater than the diameter of braking chamber portion; Said right piston is a step piston, comprise with the right piston left part of inner chamber of cylinder block slip motive sealing and with the right piston right part of the piston hole slip motive sealing of cylinder mouth closure construction, right piston left part diameter is greater than right piston right part diameter; Said cylinder flap seal structure comprises cylindrical shape cap seal main body, cap seal outer circlip, cap seal inner shield ring and is positioned at the cap seal inner shield ring spring on cap seal inner shield ring left side or right side, is fixed in outer elastomer seal of cap seal and the interior elastomer seal of cap seal on the cap seal main body; Wherein the outer elastomer seal of cap seal is located between cap seal main body and inner chamber of cylinder block, and elastomer seal is located between cap seal main body and right piston right part in the cap seal.This preferred version, cylinder flap seal structure are installed easily, and cylinder flap seal structure passes through elastomer seal and right piston slip motive sealing in the cap seal, easy processing simple in structure, and functional reliability is good.
As preferably, said inner chamber of cylinder block is provided with the cylinder hole shape inner chamber or the step cylinder hole shape inner chamber of screw thread for the right-hand member end; Step cylinder hole shape inner chamber wherein comprises the cylinder flap seal structure assembly department that is positioned at cylinder body right-hand member end and is positioned at the braking chamber portion in cylinder flap seal structure assembly department left side that the diameter of cylinder flap seal structure assembly department is greater than the diameter of braking chamber portion; Said right piston is a step piston, comprise with the right piston left part of inner chamber of cylinder block slip motive sealing and with the right piston right part of the piston hole slip motive sealing of cylinder mouth closure construction, right piston left part diameter is greater than right piston right part diameter; Said cylinder flap seal structure comprise plug screw that the center is provided with piston hole be fixed on the piston hole and with the adaptive cap seal of right piston right part in elastomer seal.This preferred version, cylinder body and cylinder flap seal structure are simple, and processing and assembling is easy; Cylinder flap seal structure is through elastomer seal in the cap seal and right piston slip motive sealing, and simple in structure, functional reliability is good.
As preferably, said left piston position limit pin structure, comprise on the left piston one left slotted hole groove that is communicated with corresponding oil inlet passage and with the left limit pin of left slotted hole groove Spielpassung, the two ends of left limit pin are fixed in the respective pin hole on the cylinder body; Right piston position limit pin structure comprises right slotted hole groove, right limit pin, position limit pin positioning seat, position limit pin return spring and right piston guide rod that is communicated with corresponding oil inlet passage on the right piston; The right-hand member of right piston guide rod links to each other with the left end of right piston, and the left end sliding plug of right piston guide rod places the piston guide rod that is arranged on the left piston right-hand member to connect in the blind hole; The position limit pin positioning seat is the cylindrical shape positioning seat that outer cylinder is provided with flanged ring, inner cylinder and right piston right part Spielpassung, and the external diameter of said flanged ring is less than the diameter of right piston left part; The left end of position limit pin return spring links to each other with the right piston shaft shoulder, and right-hand member links to each other with the right-hand member of position limit pin positioning seat outer cylinder flanged ring; Right slotted hole groove is located at the left end of right piston right part; The length of right limit pin is greater than the diameter of right piston right part, less than the diameter of right piston left part; Right limit pin and right slotted hole groove Spielpassung, its two ends respectively are provided with a draw-in groove, and the right-hand member holding of position limit pin positioning seat is in the draw-in groove at right limit pin two ends.This preferred version, the right limit pin can move at inner chamber of cylinder block with right piston, and therefore the Design of length of right slotted hole groove is shorter than left slotted hole groove, helps reducing the length and the weight of brake master cylinder assy, thereby helps economical with materials, reduces the automobile energy consumption
As preferably; Said LC valve comprises one of the left piston left end left shoulder shape cylndrical surface cavity that is communicated with left slotted hole groove, and the left valve core spring seat and the left spool return limit structure that are arranged at the left spool in this cavity, left spool return spring, band oil through; Said right centre valve comprises one of right piston left end right shoulder shape cylndrical surface cavity that is communicated with right slotted hole groove, and the right valve core spring seat and the right spool return limit structure that are arranged at the right spool in this cavity, right spool return spring, band oil through; Wherein left valve core spring seat is positioned at the left end of left shoulder shape cylndrical surface cavity, and left spool return spring left end links to each other with left valve core spring seat right side, and left spool return spring right-hand member links to each other with left spool left end end face; Left side spool left end be the side be provided with logical oil groove and with the cylindrical body of cylndrical surface, the big footpath of cavity, left shoulder shape cylndrical surface Spielpassung, right-hand member is a Rotary-table; Right valve core spring seat is positioned at the left end of right shoulder shape cylndrical surface cavity, and right spool return spring left end links to each other with right valve core spring seat right side, and right spool return spring right-hand member links to each other with right spool left end end face; Right spool left end be the side be provided with logical oil groove and with the cylindrical body of cylndrical surface, the big footpath of cavity, right shoulder shape cylndrical surface Spielpassung, right-hand member is a Rotary-table.This preferred version, spool right-hand member Rotary-table side, the left and right sides and the left end of the path cylndrical surface of corresponding shoulder shape cylndrical surface cavity constitute the valve port of cone valve, when left and right sides spool return limit structure guarantees non-braking about the centre valve valve port be in opening state.This preferred version, left and right sides centre valve is simple in structure, and manufacturing is easy with installation, reliable operation, long service life.
As preferably; Said left spool return limit structure is by the path hole of left shoulder shape cylndrical surface cavity; Left side spool return lever and left limit pin constitute; Spool return lever gap, a left side be arranged in the path hole of left shoulder shape cylndrical surface cavity and length greater than the path hole length of left shoulder shape cylndrical surface cavity, left spool return lever is provided with oil canal; Said right spool return limit structure is by the path hole of right shoulder shape cylndrical surface cavity; Right spool return lever and right limit pin constitute; Right spool return lever gap be located in the path hole of right shoulder shape cylndrical surface cavity and length greater than the path hole length of right shoulder shape cylndrical surface cavity, left spool return lever (31.4) is provided with oil canal.This preferred version, left and right sides spool return limit structure manufacturing is installed easily, and functional reliability is good.
As preferably, said left valve core spring seat and right valve core spring seat are circlip for hole.This preferred version, simple in structure, total amount is light, and it is low to make processing cost.
As preferably, said left valve core spring seat and right valve core spring seat are the plug screw of center tape spool to oil through.This preferred version, simple in structure, functional reliability is high.
As preferably, the left piston left end is fixed with and the left piston left side elastomer seal of inner chamber of cylinder block slip motive sealing, and the left piston right-hand member is fixed with and the right elastomer seal of inner chamber of cylinder block slip motive sealing left piston; Right piston left end is fixed with the right piston left side elastomer seal with inner chamber of cylinder block slip motive sealing.This preferred version can reduce inner chamber of cylinder block and left and right sides piston machining accuracy, thereby reduces the manufacturing cost, and left and right sides piston and inner chamber of cylinder block slip motive sealing are effective.
The beneficial effect that brings of the utility model is: the centre valve valve port of automobile braking master cylinder assembly opens and closes the speed height, uses Q-percentile life long, and simple in structure, is easy to make, and the working service cost is low.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Figure: Block 11 Brim cap sealing structure 12 Lid seal outer circlip 12.1 Lid seal body 12.2 Lid seal outer elastomeric seals 12.3 Lid inner snap closure Circle 12.4 lid seal ring inside the spring 12.5 lid seal outer elastomeric seals 12.3 lid sealing elastomeric seal within 12.6 Right piston 21 long hole slot Right 21.2 Right stopper pin 21.3 stopper pin positioning seat 21.4 stopper pin return spring 21.5 Right piston rod 21.6 ? left piston 22 long hole slots left 22.2 left stopper pin 22.3 poppet type valve 31 Right center Right spool 31.1 Right valve return spring 31.2 Right valve spring seat 31.3 Right spool return lever 31.4 poppet valve 32, left center left spool 32.1 left spool return spring 32.2 left valve spring seat 32.3 left back position spool lever 32.4 Right Piston return spring 41 Right Right piston return spring seat 41.1 Right Left piston return spring seat 41.2 left piston return spring 42 left piston return spring seat 42.1?.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment one:
As shown in Figure 1, the utility model comprises cylinder body 11, is positioned at the cylinder flap seal structure 12 that is provided with piston hole of cylinder body right-hand member, right piston 21, left piston 22, be located at the right centre valve 31 of cone valve type of right piston 21 left ends, the cone valve type LC valve 32 of being located at left piston 22 left ends, right piston return spring 41, left piston return spring 42 and corresponding left piston position limit pin structure and right piston position limit pin structure.Between left piston 22 left ends and the cylinder body 11 inner chamber left ends is left brake chamber; Left piston return spring 42 is between left piston 22 left ends and cylinder body 11 inner chamber left ends, and left piston return spring 42 left ends link to each other with cylinder body 11 inner chamber left end end faces through left piston return spring seat 42.1; Between left piston 22 right-hand members and right piston 21 left ends is right brake chamber; Right piston return spring 41 is between left piston 22 right-hand members and right piston 21 left ends; Right piston return spring 41 left ends link to each other with left piston 42 right-hand members through right piston left side return spring seat 41.2, and right piston return spring 41 right-hand members link to each other with right piston 41 left ends through the right return spring seat 41.1 of right piston; Cylinder body 11 is provided with two groups of corresponding with left and right sides brake chamber respectively turnover oil ducts, and the liquid outlet in the left brake chamber connects the near front wheel and the off hind wheel of automobile, and the liquid outlet of right brake chamber connects the off-front wheel and the left rear wheel of automobile.
And left piston position limit pin structure; Comprise on the left piston 22 one be positioned at left slotted hole groove 22.2 that left piston left side elastomer seal (leather cup) 22.1 and the right elastomer seal of left piston (leather cup) be communicated with between 22.4 and with corresponding oil inlet passage and and the left limit pin 22.3 of left slotted hole groove 22.2 Spielpassung, the two ends of left limit pin 22.3 are fixed in the respective pin hole on the cylinder body 11.Right piston position limit pin structure, comprise on the right piston 21 a right slotted hole groove 21.2 that is positioned at right piston right part left end and is communicated with corresponding oil inlet passage and with right limit pin 21.3, position limit pin positioning seat 21.4, position limit pin return spring 21.5 and the right piston guide rod 21.6 of right slotted hole groove 21.2 Spielpassung; Right piston guide rod 21.6 is one " worker " font guide rod; The center hole that its right-hand member passes on the right return spring seat of right piston 41.1 left ends links to each other with the left end of right piston 21, and the center hole sliding plug that its left end passes right piston left side return spring seat 41.2 places the piston guide rod that is arranged on left piston 22 right-hand members to connect in the blind hole; Position limit pin positioning seat 21.4 is provided with the cylindrical shape positioning seat of flanged ring, inner cylinder and right piston right part Spielpassung for outer cylinder, and the external diameter of said flanged ring is less than the diameter of right piston left part; The left end of position limit pin return spring 21.5 links to each other with right piston 21 shaft shoulders, and right-hand member links to each other with the right-hand member of position limit pin positioning seat 21.4 outer cylinder flanged rings; The length of right limit pin 21.3 is greater than the diameter of right piston right part; Diameter less than right piston left part; Its two ends respectively are provided with a draw-in groove; The right-hand member holding of position limit pin positioning seat 21.4 is in the draw-in groove at right limit pin 21.3 two ends, and the right limit pin can move in the braking chamber portion of cylinder body with right piston, and therefore the Design of length of right slotted hole groove is shorter than left slotted hole groove.
As shown in Figure 1; Under the non-braking state; Under right piston return spring 41 and the 42 elastic force effects of left piston return spring; Left piston 42 all is in leftmost position with right piston 41, and this moment, left spool return lever 32.4 right-hand members withstood on the left limit pin 22.3, and right spool return lever 31.4 right-hand members withstand on the right limit pin 21.3; Because the length of left spool return lever 32.4 and right spool return lever 31.4 is greater than the left side of correspondence or the path hole length of right shoulder shape cylndrical surface cavity; Cone valve type LC valve 32 is in opening state with right centre valve 31 valve ports of cone valve type, about the braking chamber respectively with valve body 11 on corresponding oil inlet passage is communicated with, promptly with corresponding brake fluid liquid container connection.During braking, right piston 31 stressed being moved to the left that link to each other with brake pedal unit, right piston return spring 41 pressurizeds also promote left piston 22 compression left piston return springs 42 and move to left.Move to left with right piston 31; Position limit pin return spring 21.5 promotion position limit pin positioning seats 21.4 head on right limit pin 21.3 and move to right; The gap appears between right spool return lever 31.4 right-hand members and the right limit pin 21.3; The ejection under right spool return spring 31.2 elastic force effects of right spool 31.1 right spool return lever 31.4 and is moved to right, and the right centre valve 31 valve port openings of cone valve type dwindle until closing gradually; Simultaneously; Along with moving to left of left piston 22; The gap appears between left side spool return lever 32.4 and the left limit pin 22.3; Spool 32.1 ejection under left spool return spring 32.2 elastic force effects in a left side left spool return lever 32.4 and is moved to right, and cone valve type LC valve 32 valve port openings dwindle until closing gradually.Along with closing of cone valve type LC valve 32 and right centre valve 31 valve ports of cone valve type; Left and right brake chamber is isolated with corresponding liquid container; Braking fluid in the left and right brake chamber raises in the effect downforce of the piston that moves to left, and realizes automobile brake through the corresponding braking line of corresponding oil outlet entering on the valve body.After the power releasing that is applied on the brake petal; Left and right piston 22,21 moves to right under the effect of return spring elastic force, and left and right centre valve 32,31 valve ports of cone valve type are opened; High hydraulic brake fluid is through centre valve backflow brake fluid liquid container, and a complete braking process finishes.
The beneficial effect that the utility model brings is: the centre valve of brake master cylinder assy adopts cone valve structure; Valve port be sealed into the line contact sealing between the corresponding metal member; Sealing Q-percentile life is long; Manufacturing simple in structure is easy, and valve port keying speed is fast, helps improving the braking ability of automobile.
Embodiment two:
Embodiment two is with embodiment one difference:
The inner chamber of cylinder body 11 is a cylinder hole shape inner chamber, and the right-hand member end of cylindrical hole inner chamber is provided with two circlip draw-in grooves;
Correspondingly; Cylinder flap seal structure 12 comprises the holding circlip 12.1 outside the cap seal in the draw-in groove of in two the circlip draw-in grooves in cylinder body 11 cylindrical hole inner chamber right-hand member ends, keeping right; Holding is circlip 12.4 in the cap seal in the draw-in groove that in two the circlip draw-in grooves in cylinder body 11 cylindrical hole inner chamber right-hand member ends, keeps left; The cylindrical shape cap seal main body 12.2 between the circlip 12.4 in circlip 12.1 and the cap seal outside cap seal; Cap seal inner shield ring spring sheet 12.5 in cap seal between circlip 12.4 right-hand members and cap seal main body 12.2 left ends, be fixed on the cap seal main body 22 and be positioned at the outer elastomer seal (O-ring seals) 12.3 of cap seal between cap seal main body 12.2 and cylinder body 11 inner chambers and be fixed on the cylindrical shape cap seal main body 12.2 center piston through holes and and right piston right part between the cap seal elastomer seal (leather cup) 12.6 of slip motive sealing.
Embodiment three:
Embodiment two is with embodiment one difference:
Cylinder flap seal structure assembly department right-hand member car is shaped on screw thread, cylinder flap seal structure 12 comprise plug screw that the center is provided with piston hole be fixed on the piston hole and with the adaptive cap seal of right piston right part slip motive sealing in elastomer seal (leather cup) 12.6.In addition; Left side valve core spring seat 32.3 is the plug screw of center tape spool to oil through with right valve core spring seat 31.3; Correspondingly the left shoulder shape cylndrical surface cavity left end car of left piston 22 left ends is shaped on the screw thread adaptive with left valve core spring seat (the center tape spool is to the plug screw of oil through) 32.3, and the left shoulder shape cylndrical surface cavity left end car of right piston 21 left ends is shaped on the screw thread adaptive with right valve core spring seat (the center tape spool is to the plug screw of oil through) 31.3.
The specific embodiment of the above is merely the utility model preferred implementation, is not the practical implementation scope that limits the utility model with this.All shapes according to the utility model, the equivalence that structure is done change and ought to all be included in the protection domain of the utility model.
Claims (10)
1. automobile braking master cylinder assembly comprises cylinder body (11), is positioned at the cylinder flap seal structure (12) that is provided with piston hole, left piston (22), right piston (21) and the corresponding left piston position limit pin structure and the right piston position limit pin structure of cylinder body right-hand member; Wherein left piston (22) be arranged at cylinder body (11) inner chamber and with cylinder body (11) inner chamber slip motive sealing; The left end of right piston (22) be positioned at cylinder body (11) inner chamber and with cylinder body (11) inner chamber slip motive sealing; The piston hole that the right-hand member of right piston (22) passes cylinder flap seal structure (12) links to each other with the automobile brake pedal assembly, the piston hole slip motive sealing of right piston (22) and cylinder flap seal structure (12); Between left piston (22) left end and cylinder body (11) the inner chamber left end is left brake chamber, is provided with left piston return spring (42); Between left piston (22) right-hand member and right piston (21) left end is right brake chamber, is provided with right piston return spring (41); Cylinder body (11) is provided with two groups of corresponding with left and right sides brake chamber respectively turnover oil ducts; It is characterized in that: said left piston (22) left end is provided with a cone valve type LC valve (32), and the left end of right piston (21) is provided with the right centre valve (31) of a cone valve type.
2. automobile braking master cylinder assembly according to claim 1 is characterized in that: the inner chamber of said cylinder body (11) is a cylinder hole shape inner chamber, and the right-hand member end of cylindrical hole inner chamber is provided with two circlip draw-in grooves; Said right piston (21) is a step piston, comprise with the right piston left part of inner chamber of cylinder block slip motive sealing and with the right piston right part of the piston hole slip motive sealing of cylinder mouth closure construction (12), right piston left part diameter is greater than right piston right part diameter; Said cylinder flap seal structure (12) comprise circlip (12.4) in the outer circlip (12.1) of cylindrical shape cap seal main body (12.2), cap seal, the cap seal be positioned at cap seal circlip (12.4) right-hand member and cap seal main body (12.2) left end between cap seal inner shield ring spring (12.5), be fixed in the cap seal elastomer seal (12.6) in elastomer seal (12.3) and the cap seal outward on the cap seal main body (22); Wherein the outer elastomer seal (12.3) of cap seal is located between cap seal main body (12.2) and cylinder body (11) inner chamber, and elastomer seal (12.6) is located between cap seal main body (12.2) and right piston right part in the cap seal.
3. automobile braking master cylinder assembly according to claim 1; It is characterized in that: said cylinder body (11) inner chamber is a step cylinder hole shape inner chamber; Comprise cylinder flap seal structure assembly department that is positioned at cylinder body (11) right-hand member end and the braking chamber portion that is positioned at cylinder flap seal structure assembly department left side, the diameter of closure construction assembly department is greater than the diameter of braking chamber portion; Said right piston (21) is a step piston, comprise with the right piston left part of inner chamber of cylinder block slip motive sealing and with the right piston right part of the piston hole slip motive sealing of cylinder mouth closure construction (12), right piston left part diameter is greater than right piston right part diameter; Said cylinder flap seal structure (12) comprises cylindrical shape cap seal main body (12.2), cap seal outer circlip (12.1), cap seal inner shield ring (12.4) and is positioned at the cap seal inner shield ring spring (12.5) on cap seal inner shield ring (12.4) left side or right side, is fixed in outer elastomer seal (12.3) of cap seal and the interior elastomer seal (12.6) of cap seal on the cap seal main body (22); Wherein the outer elastomer seal (12.3) of cap seal is located between cap seal main body (12.2) and cylinder body (11) inner chamber, and elastomer seal (12.6) is located between cap seal main body (12.2) and right piston right part in the cap seal.
4. automobile braking master cylinder assembly according to claim 1 is characterized in that: said cylinder body (11) inner chamber is provided with the cylinder hole shape inner chamber or the step cylinder hole shape inner chamber of screw thread for the right-hand member end; Step cylinder hole shape inner chamber wherein comprises the cylinder flap seal structure assembly department that is positioned at cylinder body (11) right-hand member end and is positioned at the braking chamber portion in cylinder flap seal structure assembly department left side that the diameter of cylinder flap seal structure assembly department is greater than the diameter of braking chamber portion; Said right piston (21) is a step piston, comprise with the right piston left part of inner chamber of cylinder block slip motive sealing and with the right piston right part of the piston hole slip motive sealing of cylinder mouth closure construction (12), right piston left part diameter is greater than right piston right part diameter; Said cylinder flap seal structure (12) comprise plug screw that the center is provided with piston hole be fixed on the piston hole and with the adaptive cap seal of right piston right part in elastomer seal (12.6).
5. according to claim 2 or 3 or 4 described automobile braking master cylinder assemblies; It is characterized in that: said left piston position limit pin structure; Comprise on the left piston (22) one left slotted hole groove (22.2) that is communicated with corresponding oil inlet passage and with the left limit pin (22.3) of left slotted hole groove (22.2) Spielpassung, the two ends of left limit pin (22.3) are fixed in the respective pin hole on the cylinder body (11); Right piston position limit pin structure comprises right slotted hole groove (21.2), right limit pin (21.3), position limit pin positioning seat (21.4), position limit pin return spring (21.5) and right piston guide rod (21.6) that is communicated with corresponding oil inlet passage on the right piston 21; The right-hand member of right piston guide rod (21.6) links to each other with the left end of right piston (21), and the left end sliding plug of right piston guide rod (21.6) places the piston guide rod that is arranged on left piston (22) right-hand member to connect in the blind hole; Position limit pin positioning seat (21.4) is provided with the cylindrical shape positioning seat of flanged ring, inner cylinder and right piston right part Spielpassung for outer cylinder, and the external diameter of said flanged ring is less than the diameter of right piston left part; The left end of position limit pin return spring (21.5) links to each other with right piston (21) shaft shoulder, and right-hand member links to each other with the right-hand member of position limit pin positioning seat (21.4) outer cylinder flanged ring; Right slotted hole groove (21.2) is located at the left end of right piston right part; The length of right limit pin (21.3) is greater than the diameter of right piston right part, less than the diameter of right piston left part; Right limit pin (21.3) and right slotted hole groove (21.2) Spielpassung, its two ends respectively are provided with a draw-in groove, and the right-hand member holding of position limit pin positioning seat (21.4) is in the draw-in groove at right limit pin (21.3) two ends.
6. automobile braking master cylinder assembly according to claim 5; It is characterized in that: said LC valve (32) comprises one of left piston (22) left end left shoulder shape cylndrical surface cavity that is communicated with left slotted hole groove (22.2), and the left valve core spring seat (32.3) and the left spool return limit structure that are arranged at the interior left spool (32.1) of this cavity, left spool return spring (32.2), band oil through; Said right centre valve (31) comprises one of right piston (21) left end right shoulder shape cylndrical surface cavity that is communicated with right slotted hole groove (21.2), and the right valve core spring seat (31.3) and the right spool return limit structure that are arranged at the interior right spool (31.1) of this cavity, right spool return spring (31.2), band oil through; Wherein left valve core spring seat (32.3) is positioned at the left end of left shoulder shape cylndrical surface cavity; Left side spool return spring (32.2) left end links to each other with left valve core spring seat (32.3) right side, and left spool return spring (32.2) right-hand member links to each other with left spool (32.1) left end end face; Left side spool (32.1) left end be the side be provided with logical oil groove and with the cylindrical body of cylndrical surface, the big footpath Spielpassung of left shoulder shape cylndrical surface cavity, right-hand member is a Rotary-table; Right valve core spring seat (31.3) is positioned at the left end of right shoulder shape cylndrical surface cavity; Right spool return spring (31.2) left end links to each other with right valve core spring seat (31.3) right side, and right spool return spring (31.2) right-hand member links to each other with right spool (31.1) left end end face; Right spool (31.1) left end be the side be provided with logical oil groove and with the cylindrical body of cylndrical surface, the big footpath Spielpassung of right shoulder shape cylndrical surface cavity, right-hand member is a Rotary-table.
7. automobile braking master cylinder assembly according to claim 6; It is characterized in that: said left spool return limit structure is by the path hole of left shoulder shape cylndrical surface cavity; Left side spool return lever (32.4) and left limit pin (22.3) constitute; Spool return lever (32.4) gap, a left side be arranged in the path hole of left shoulder shape cylndrical surface cavity and length greater than the path hole length of left shoulder shape cylndrical surface cavity, left spool return lever (32.4) is provided with oil canal; Said right spool return limit structure is by the path hole of right shoulder shape cylndrical surface cavity; Right spool return lever (31.4) and right limit pin (21.3) constitute; Right spool return lever (31.4) gap be arranged in the path hole of right shoulder shape cylndrical surface cavity and length greater than the path hole length of right shoulder shape cylndrical surface cavity, left spool return lever (31.4) is provided with oil canal.
8. automobile braking master cylinder assembly according to claim 6 is characterized in that: said left valve core spring seat (32.3) and right valve core spring seat (31.3) are circlip for hole.
9. automobile braking master cylinder assembly according to claim 6 is characterized in that: said left valve core spring seat (32.3) and right valve core spring seat (31.3) are the plug screw of center tape spool to oil through.
10. according to claim 1 or 2 or 3 or 4 described automobile braking master cylinder assemblies; It is characterized in that: left piston (22) left end is fixed with the left piston left side elastomer seal (22.1) with cylinder body (11) inner chamber slip motive sealing, and left piston (22) right-hand member is fixed with and the right elastomer seal (22.4) of cylinder body (11) inner chamber slip motive sealing left piston; Right piston (21) left end is fixed with the right piston left side elastomer seal (21.1) with cylinder body (11) inner chamber slip motive sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203309038U CN202251577U (en) | 2011-09-06 | 2011-09-06 | Automobile brake master cylinder assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203309038U CN202251577U (en) | 2011-09-06 | 2011-09-06 | Automobile brake master cylinder assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251577U true CN202251577U (en) | 2012-05-30 |
Family
ID=46112823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203309038U Expired - Lifetime CN202251577U (en) | 2011-09-06 | 2011-09-06 | Automobile brake master cylinder assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251577U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089867A (en) * | 2013-01-25 | 2013-05-08 | 徐園植 | Magnetic pressure servo brake master cylinder |
| CN109826887A (en) * | 2019-03-13 | 2019-05-31 | 郑州科技学院 | Brake, hydraulic mechanism and intelligent mobile vehicle |
-
2011
- 2011-09-06 CN CN2011203309038U patent/CN202251577U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089867A (en) * | 2013-01-25 | 2013-05-08 | 徐園植 | Magnetic pressure servo brake master cylinder |
| CN103089867B (en) * | 2013-01-25 | 2016-01-20 | 徐園植 | Magnetic pressure servo brake master cylinder |
| CN109826887A (en) * | 2019-03-13 | 2019-05-31 | 郑州科技学院 | Brake, hydraulic mechanism and intelligent mobile vehicle |
| CN109826887B (en) * | 2019-03-13 | 2020-08-28 | 郑州科技学院 | Brake, hydraulic pressure mechanism and intelligent mobile vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |