CN105416493A - Brake master cylinder - Google Patents
Brake master cylinder Download PDFInfo
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- CN105416493A CN105416493A CN201410474177.5A CN201410474177A CN105416493A CN 105416493 A CN105416493 A CN 105416493A CN 201410474177 A CN201410474177 A CN 201410474177A CN 105416493 A CN105416493 A CN 105416493A
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- master cylinder
- piston
- ring
- handle bracket
- sleeve
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Abstract
The invention relates to a brake master cylinder. The brake master cylinder is characterized in that a ring groove is at least annularly formed in the segment, which extends into a main oil cylinder relatively, of a piston, and first O-shaped rings are arranged at the ring groove in a sleeving manner, wherein a buffer segment in the shape of a bevel is at least formed at the bottom of the ring groove of the piston, and the end, which faces to the main oil cylinder of the buffer segment is lowly inclined; during the reciprocating displacement of the piston, the distance between two groove walls of the ring groove can allow the positions of the first O-shaped rings relative to the buffer segment to be changed, so that in the process of the reciprocating displacement of the piston, the first O-shaped rings are extended and supported in various degrees; the first O-shaped rings generate different force fit amount and pressure-resistant leakage, so that the brake reaction is quick and acute and good operation hand feel can be obtained.
Description
Technical field
The present invention is relevant with fluid brake, aims to provide a kind of when piston reciprocating displacement, can coordinate the amount of being press-fitted increasing or reduce O ring gradually, and then makes brake react more quick, sensitive, and can obtain the master cylinder of better operating handle.
Background technology
Press, the fluid brake that locomotive or bicycle use, one of hydraulic efficiency gear that use is the most general should be can be considered, known existing master cylinder is as shown in Figure 1 many, one in order to install brake hand the handle bracket 11 of (figure slightly) being provided with one for the oil storage space 111 and of filling hydraulic oil for the master cylinder 112 connecting hydraulic tubing (figure slightly), being provided with one in this master cylinder 112 inside can be subject to installed brake hand the piston 12 driving shift reciprocately, the section place relatively stretching into this master cylinder 112 in this piston 12 is equipped with an annular groove 121, an O ring 122 is arranged with in this annular groove 121 place.
Main in the process of piston 12 towards master cylinder 112 movement, by piston 12, the hydraulic oil in master cylinder 112 is sent to the brake callipers (figure slightly) of wheel through connected hydraulic tubing, order brake callipers produces moving effect to wheel.
But, similar existing master cylinder when actual act, in the reciprocal process of its piston 12, O ring 122 maintains the identical amount of being press-fitted all the time, in order to obtain due withstand voltage leaks, must improve the amount of the being press-fitted design of O ring 122, the friction drag when amount of being press-fitted due to O ring moves to it is directly proportional.
Relative at piston 12 by fluid-pressure transmission to the advance of brake callipers or oppositely retreat in process and all must bear identical resistance, therefore can comparatively require great effort when carrying out allowing brake, and after completing brake, piston and brake hand handle to retreat homing action also comparatively slow, not only can affect sensitivity and the operating handle of brake.
Summary of the invention
The present invention namely provide one can in piston reciprocating displacement time, coordinate the amount of being press-fitted increasing or reduce O ring gradually, and then make brake react more quick, sensitive, and the master cylinder of better operating handle can be obtained.
Object is taken off for reaching, master cylinder of the present invention, one in order to brake hand handle is installed handle bracket on be connected with one for the oil storage space and of filling hydraulic oil for the master cylinder be connected with hydraulic tubing, being provided with one in this master cylinder inside can be subject to installed brake hand the piston driving shift reciprocately, the section place that this piston at least stretches into this master cylinder relatively at it is equipped with an annular groove, is arranged with one the one O ring in this annular groove place; It is characterized in that: this piston is in the bottom land place of this annular groove, and be at least formed with a buffer field taken the form of inclined plane, this buffer field is tiltedly low towards one end of this master cylinder; And, distance between two cell walls of this annular groove, when this piston reciprocating displacement, can be changed it relative to the position with this buffer field for an O ring, in process by this piston reciprocating displacement, to an O ring generation expanded support effect in various degree, an O ring is made to produce the different amounts of being press-fitted and withstand voltage leaks.
Utilize above-mentioned technical characteristic, master cylinder of the present invention brakes hand when carrying out brake through pressing, one O ring because of bear hydraulic oil antagonistic force and towards the direction displacement contrary with piston moving direction, that is gradually toward the eminence displacement of buffer field, increase the expanded support effect to an O ring gradually by buffer field, make an O ring increase the amount of being press-fitted and withstand voltage leaks gradually; Especially, under the initial condition of piston towards master cylinder movement, because an O ring is still in the relatively little position of the amount of being press-fitted, therefore, it is possible to promote piston fast with relatively little pressing strength the hydraulic oil of master cylinder is sent to brake callipers, and then obtain preferably operating handle; Move to when being enough to produce moving effect to wheel until piston, an O ring also coordinates and is moved to the relatively large position of the amount of being press-fitted, and now can produce maximum withstand voltage leaks, and then obtains comparatively firm, failure-free brake moving effect; And, when unclasping the pressing strength to brake hand handle, one O ring can by the ramp effect of buffer field, quick travel is to buffer field towards one end of master cylinder, the amount of being press-fitted of rapid reduction the one O ring and withstand voltage leaks, making piston and brake hand being able to Rapid reset, making brake react more quick, sensitive.
According to above-mentioned technical characteristic, described oil storage space is located at the axial positions relative to this master cylinder of this handle bracket, this handle bracket is provided with an oil outlet for being connected with hydraulic tubing relative to this master cylinder one end, and this handle bracket is provided with an assembly opening relative to this oil storage space one end; The oil storage space inside of this handle bracket is provided with a sleeve be connected with this master cylinder, and one end that this piston stretches into this sleeve is relatively provided with one the 2nd O ring; The assembly opening place of this handle bracket is provided with a permanent seat, and this permanent seat has the locating bush stretching into this oil storage space and supply to be connected with this sleeve, is separately equipped with a pull bar be connected with this piston in the center of this locating bush; Be lined with a leakproof element between this permanent seat and this handle bracket, this leakproof element is integrally extended with one by the locating bush of this permanent seat and the sleeve pipe of this sleeve covers.
According to above-mentioned technical characteristic, between the cell wall that described piston is adjacent in this buffer field towards one end of this master cylinder, be formed with a turnover section.
According to above-mentioned technical characteristic, the gradient of described buffer field is between 5 ~ 50 degree.
According to above-mentioned technical characteristic, the distance between two cell walls of this annular groove described is greater than the thickness at least 0.1mm of an O ring.
According to above-mentioned technical characteristic, between the cell wall that described piston is adjacent in this buffer field towards one end of this master cylinder, be formed with a turnover section; The gradient of this buffer field is between 5 ~ 50 degree; And the distance between two cell walls of this annular groove is greater than the thickness at least 0.1mm of an O ring.
Described buffer field is straight inclined plane shape.
Described buffer field is the inclined plane shape of protuberantia.
Described cannula end is provided with an inward flange, this sleeve be peripherally installed with an annular groove snapped in for this inward flange.
Described cannula end is provided with an inward flange, this sleeve be peripherally installed with an annular groove snapped in for this inward flange; This handle bracket is formed with a class filled in for this sleeve and this sleeve pipe in the joining place of this master cylinder and this oil storage space.
The front end of described leakproof element is provided with one in order to the outward flange of relative clipping between this assembly opening and this permanent seat.
Described handle bracket is provided with at least one the first fuel return hole being connected to this oil storage space in this master cylinder for an O ring crank motion place.
Described sleeve is provided with at least one the second fuel return hole being connected to this oil storage space.
This handle bracket is provided with at least one the first fuel return hole being connected to this oil storage space in this master cylinder for an O ring crank motion place; Sleeve is provided with at least one the second fuel return hole being connected to this oil storage space.
A spring is provided with between described master cylinder and this piston.
Described handle bracket is formed with the oil return section that an internal diameter is greater than an O ring external diameter relatively in the position that this master cylinder is provided with the first fuel return hole relatively.
Described piston is provided with a constriction section at it relative to the position between an O ring and the 2nd O ring.
One end of described this permanent seat of piston relative orientation is provided with a ball seat, and this pull bar is provided with a pommel socket-connected with this ball seat; This pull bar is articulated through a rotating shaft and the brake hand handle installed.
Described pull bar is articulated through a rotating shaft and the brake hand handle installed; The body of rod of this pull bar is provided with a thread section, and this rotating shaft is provided with one for the screw with the thread section bolt of this pull bar.
Master cylinder of the present invention, one in order to brake hand handle is installed handle bracket on be connected with one for the oil storage space and of filling hydraulic oil for the master cylinder be connected with hydraulic tubing, being provided with one in this master cylinder inside can be subject to installed brake hand the piston driving shift reciprocately, the section place that this piston at least stretches into this master cylinder relatively at it is equipped with an annular groove, is arranged with one the one O ring in this annular groove place; It is characterized in that: this piston is in the bottom land place of this annular groove, and be at least formed with a buffer field taken the form of inclined plane, this buffer field is tiltedly low towards one end of this master cylinder; And the distance between two cell walls of this annular groove, when this piston reciprocating displacement, can change it relative to the position with this buffer field for an O ring; Oil storage space is located at the axial positions relative to this master cylinder of this handle bracket, and this handle bracket is provided with an oil outlet for being connected with hydraulic tubing relative to this master cylinder one end, and this handle bracket is provided with an assembly opening relative to this oil storage space one end; The oil storage space inside of this handle bracket is provided with a sleeve be connected with this master cylinder, and one end that this piston stretches into this sleeve is relatively provided with one the 2nd O ring; The assembly opening place of this handle bracket is provided with a permanent seat, and this permanent seat has the locating bush stretching into this oil storage space and supply to be connected with this sleeve, is separately equipped with a pull bar be connected with this piston in the center of this locating bush; Be lined with a leakproof element between this permanent seat and this handle bracket, this leakproof element is integrally extended with one by the locating bush of this permanent seat and the sleeve pipe of this sleeve covers; A turnover section is formed between the cell wall that this piston is adjacent in this buffer field towards one end of this master cylinder; This cannula end is provided with an inward flange, this sleeve be peripherally installed with an annular groove snapped in for this inward flange; This handle bracket is formed with a class filled in for this sleeve and this sleeve pipe in the joining place of this master cylinder and this oil storage space; The front end of this leakproof element is provided with one in order to the outward flange of relative clipping between this assembly opening and this permanent seat; This handle bracket is provided with at least one the first fuel return hole being connected to this oil storage space in this master cylinder for an O ring crank motion place; This sleeve is provided with at least one the second fuel return hole being connected to this oil storage space; Position between the master cylinder of this handle bracket and this piston is provided with a spring; This handle bracket is formed with the oil return section that an internal diameter is greater than an O ring external diameter relatively in the position that this master cylinder is provided with the first fuel return hole relatively: this piston is provided with a constriction section at it relative to the position between an O ring and the 2nd O ring: one end of this this permanent seat of piston relative orientation is provided with a ball seat, and this pull bar is provided with a pommel socket-connected with this ball seat; This pull bar is articulated through a rotating shaft and the brake hand handle installed; The body of rod of this pull bar is provided with a thread section, and this rotating shaft is provided with one for the screw with the thread section bolt of this pull bar.
Specifically, the master cylinder disclosed by the present invention, can produce following effect.
1, when piston reciprocating displacement, the amount of being press-fitted increasing or reduce O ring gradually can be coordinated, and then make brake react more quick, sensitive.
2, when piston reciprocating displacement, the amount of being press-fitted increasing or reduce O ring gradually can be coordinated, and then obtains preferably operating handle.
The passage that 3, assembly opening still can be utilized to be formed, sequentially piston, sleeve and leakproof element are put into master cylinder and the oil storage space place of handle bracket, finally the permanent seat being equipped with pull bar is arranged on the assembly opening place of handle bracket, the assembling of overall brake master cylinder can be completed fast.
4, still can under the effect of leakproof element, prevent hydraulic oil from leaking outside via assembly opening, prevent hydraulic oil from leaking outside from the joining place of sleeve and locating bush, and under the effect of the 2nd O ring, prevent hydraulic oil from leaking outside from the place of wearing of pull bar, preferably sealing effectiveness can be produced to hydraulic oil.
Accompanying drawing explanation
Fig. 1 is the enlarged partial sectional view of an existing master cylinder.
Fig. 2 is the master cylinder structure cutaway view of a preferred embodiment of the present invention.
Fig. 3 is the piston region enlarged partial sectional view of master cylinder of the present invention under normality.
Fig. 4 is master cylinder of the present invention in brake hand the action schematic diagram of pressed state.
Fig. 5 is master cylinder of the present invention in brake hand the piston region enlarged partial sectional view of pressed state.
Fig. 6 is that the piston of master cylinder of the present invention and existing master cylinder makes dynamic resistance and the O ring amount of being press-fitted and handle start forming curves comparison diagram.
Fig. 7 is that the piston of second embodiment of the invention is in the enlarged partial sectional view at annular groove position.
Fig. 8 is that the piston of third embodiment of the invention is in the enlarged partial sectional view at annular groove position.
Fig. 9 is that the piston of fourth embodiment of the invention is in the enlarged partial sectional view at annular groove position.
Figure number illustrates:
11 handle brackets
111 oil storage space
112 master cylinders
12 pistons
121 annular grooves
122O ring
20 brake hand handles
30 handle brackets
31 oil storage space
311 assembly openings
32 master cylinders
321 oil outlets
322 oil return sections
33 sleeves
331 second fuel return holes
332 annular grooves
34 permanent seats
341 locating bushs
35 pull bars
351 pommels
352 thread sections
36 leakproof elements
361 sleeve pipes
3611 inward flanges
37 first fuel return holes
40 pistons
41 annular grooves
411 buffer fields
412 turnover sections
42 the one O rings
43 the 2nd O rings
44 constriction sections
45 ball seats
50 springs
60 rotating shafts
61 screws.
Detailed description of the invention
The present invention mainly provides one can when piston reciprocating displacement, coordinate the amount of being press-fitted increasing or reduce O ring gradually, and then make brake react more quick, sensitive, and the master cylinder of better operating handle can be obtained, feature of the present invention, the detailed description and obtaining can consulting the graphic and embodiment of this case is well understood to.
As the master cylinder structure cutaway view of Fig. 2 a preferred embodiment of the present invention, shown in the piston region enlarged partial sectional view of Fig. 3 master cylinder of the present invention under normality, master cylinder of the present invention, one in order to install brake hand the handle bracket 30 of 20 being connected with one for the oil storage space 31 and of filling hydraulic oil for the master cylinder 32 be connected with hydraulic tubing (scheme to omit), being provided with one in this master cylinder 32 inside can be subject to installed brake hand to drive the piston 40 of shift reciprocately 20, the section place that this piston 40 at least stretches into this master cylinder 32 relatively at it is equipped with an annular groove 41, one the one O ring 42 is arranged with in this annular groove 41 place, it is characterized in that: this piston 40, in the bottom land place of this annular groove 41, is at least formed with a buffer field taken the form of inclined plane 411, and this buffer field 411 is tiltedly low towards one end of this master cylinder 32, and, distance between two cell walls of this annular groove 41, when this piston 40 shift reciprocately, can be changed it relative to the position with this buffer field 411 for an O ring 42, in process by this piston 40 shift reciprocately, expanded support effect is in various degree produced to an O ring 42, makes an O ring 42 produce the different amounts of being press-fitted and withstand voltage leaks.
In principle, master cylinder of the present invention, in time using, suitable brake hand can be installed on handle bracket 30 20, and handle bracket 30 is satisfied with on the driver (figure slightly) of locomotive or bicycle 20 together with the hand that brakes, and be connected with the oil circuit of brake callipers (scheming slightly) through hydraulic tubing (figure slightly) formation master cylinder 32.
Under normality, one O ring 42 is by the ramp effect of buffer field 411, rest in buffer field 411 one end towards master cylinder 32, when as shown in Figures 4 and 5, when carrying out brake via pressing brake hand 20, in the process of piston 40 towards master cylinder 32 movement, one O ring 42 because of bear hydraulic oil antagonistic force and towards the direction displacement contrary with piston 40 moving direction, that is gradually toward the eminence displacement of buffer field 411, the expanded support effect to an O ring 42 is increased gradually by buffer field 411, an O ring 42 is made to increase the amount of being press-fitted and withstand voltage leaks gradually.
Especially, under the initial state of piston 40 towards master cylinder 32 movement, because an O ring 42 is still in the relatively little position of the amount of being press-fitted, therefore, it is possible to promote piston 40 fast with relatively little pressing strength the hydraulic oil of master cylinder 32 is sent to brake callipers, and then obtain preferably operating handle (as shown in Figure 6); Treat that piston 40 moves to and enough hydraulic oil is sent to brake callipers, make brake callipers to wheel produce moving effect time (that is piston 40 move to be enough to wheel produce moving effect time), one O ring 42 also coordinates and is moved to the relatively large position of the amount of being press-fitted, and the amount of being press-fitted that an O ring 42 produces is greater than hydraulic fluid pressure, middle handle actuating travel is 6mm as shown in Figure 6, the amount of being press-fitted of the one O ring 42 then rises sharply to 90% by 20%, now can produce maximum withstand voltage leaks, and then obtain comparatively firm, failure-free brake moving effect.
And, when unclasping the brake pressing strength of hand 20, piston 40 can in the middle of the spring of brake callipers or oil circuit other spring response force effect under, towards retreating direction displacement away from master cylinder 32, now an O ring 42 can by the ramp effect of buffer field 411, quick travel one end to buffer field 411 towards master cylinder 32, as shown in Figures 2 and 3, the amount of being press-fitted of rapid reduction the one O ring 42 and withstand voltage leaks, make piston 40 and brake hand be able to Rapid reset 20, make brake react more quick, sensitive.
Master cylinder of the present invention is in time implementing, described oil storage space 31 is located at the axial positions relative to this master cylinder 32 of this handle bracket 30, this handle bracket 30 is provided with an oil outlet 321 for being connected with hydraulic tubing relative to this master cylinder 32 one end, and this handle bracket 30 is provided with an assembly opening 311 relative to this oil storage space 31 one end; Oil storage space 31 inside of this handle bracket 30 is provided with a sleeve 33 be connected with this master cylinder 32, and one end that this piston 40 stretches into this sleeve 33 is relatively provided with one the 2nd O ring 43; Assembly opening 311 place of this handle bracket 30 is provided with a permanent seat 34, and this permanent seat 34 has the locating bush 341 stretching into this oil storage space 31 and supply to be connected with this sleeve 33, is separately equipped with a pull bar 35 be connected with this piston 40 in the center of this locating bush 341; Be lined with a leakproof element 36 between this permanent seat 34 and this handle bracket 30, this leakproof element 36 is integrally extended with one by the locating bush 341 of this permanent seat 34 and the coated sleeve pipe 361 of this sleeve 33.
Under said structure kenel, the passage that assembly opening 311 is formed can be utilized, sequentially piston 40, sleeve 33 and leakproof element 36 are put into master cylinder 32 and oil storage space 31 place of handle bracket 30, finally the permanent seat 34 being equipped with pull bar 35 is arranged on assembly opening 311 place of handle bracket 30, the assembling of overall brake master cylinder can be completed fast; And, can under the effect of leakproof element 36, prevent hydraulic oil from leaking outside via assembly opening 311, prevent hydraulic oil from leaking outside from the joining place of sleeve 33 with locating bush 341, and under the effect of the 2nd O ring 43, prevent hydraulic oil from leaking outside from the place of wearing of pull bar 35, preferably sealing effectiveness can be produced to hydraulic oil.
Described sleeve pipe 361 tail end can be provided with an inward flange 3611 further, the periphery of this sleeve 33 is then equipped with an annular groove 332 snapped in for this inward flange 3611, an inward flange 3611 is provided with at above-mentioned sleeve pipe 361 tail end, this sleeve 33 be peripherally installed with the structure kenel of the annular groove 332 that snaps in for this inward flange 3611 under, this handle bracket 30 can be matched with this master cylinder 32 and be formed with a class filled in for this sleeve 33 and this sleeve pipe 361 with the joining place of this oil storage space 31, to strengthen the splicing results of sleeve 33 and sleeve pipe 361; As for, described leakproof element 36 front end can be provided with one in order to the outward flange of relative clipping between this assembly opening 311 and this permanent seat 34, uses the sealing effectiveness guaranteed between permanent seat 34 and assembly opening 311.
Described handle bracket 30 can be provided with at least one the first fuel return hole 37 being connected to this oil storage space 31 in this master cylinder 32 for an O ring 42 crank motion place; This sleeve 33 also can be provided with at least one the second fuel return hole 331 being connected to this oil storage space 31; Certainly, overall brake master cylinder is provided with at least one first fuel return hole 37 that be connected to this oil storage space 31 in this master cylinder 32 for an O ring 42 crank motion place with this handle bracket 30, and this sleeve 33 is provided with at least one structure kenel being connected to the second fuel return hole 331 of this oil storage space 31 and is rendered as good.
Make with under the state retreated completely at piston 40, the hydraulic oil in oil storage space 31 is allowed to be able to automatically carry out hydraulic oil filling to the hydraulic tubing of O ring 42 front end via the first fuel return hole 37, and be unlikely because brake facing wearing and tearing and allow brake hand be returned to predetermined angle 20, and maintain due braking effect, and it is inner entered sleeve 33 through the second fuel return hole 331 by be allowed hydraulic oil, to increase the lubricant effect between piston 40 and sleeve 33.
Moreover, a spring 50 can be provided with between described master cylinder 32 and this piston 40, can by this spring 50, it is made to retreat the application force of reset in order to produce one to piston 40, when knight's releasing of brake hand time, with relative more positive, failure-free means, make piston retreat and make and brake hand that piston is linked being returned to predetermined angle.
Again, the position that described handle bracket 30 can be provided with the first fuel return hole 37 relatively in this master cylinder 32 is formed with the oil return section 322 that an internal diameter is greater than O ring 42 external diameter relatively, makes relatively to accelerate the speed of an O ring 42 by the first fuel return hole 37; And described piston 40 can be provided with a constriction section 44 at it relative to the position between an O ring 42 and the 2nd O ring 43, this constriction section 44 can be utilized to hold hydraulic oil, to increase the reciprocating lubricant effect of piston 40.
As for, described piston 40 can also be provided with a ball seat 45 in one end of this permanent seat 34 of its relative orientation, and this pull bar 35 is provided with a pommel 351 socket-connected with this ball seat 45; This pull bar 35 is articulated 20 with the brake hand installed through a rotating shaft 60; And, at described pull bar 35 through a rotating shaft 60 with the brake hand installed under the 20 structure kenels be articulated, the body of rod of this pull bar 35 is provided with a thread section 352, this rotating shaft 60 is provided with one for the screw 61 with thread section 352 bolt of this pull bar 35, makes to adjust brake hand through the mode of rotating tension bar 35 the angle of 20.
It is worth mentioning that, take off in the embodiment shown in Fig. 2 to Fig. 5 upper, between the cell wall that described piston 40 is adjacent in this buffer field 411 towards one end of this master cylinder 32, be formed with a turnover section 412; Certainly, described piston 40 can also as can be seen from figures 8 and 9, and with the bottom land place only in this annular groove 41, the structural form being only provided with a buffer field 411 presents.
No matter and be formed with a turnover section 412 between the cell wall that whether is adjacent in this buffer field 411 towards one end of this master cylinder 32 of described piston 40; In time implementing, the gradient of this buffer field 411 is good between 5 ~ 50 degree; And the thickness that the distance between two cell walls of this annular groove 41 described is greater than an O ring 42 at least 0.1mm is good.
Same, no matter be formed with a turnover section 412 between the cell wall that whether is adjacent in this buffer field 411 towards one end of this master cylinder 32 of described piston 40, described buffer field 411 can in the straight inclined plane shape as shown in Fig. 3 or Fig. 8; Can also in the inclined plane shape as the protuberantia of Fig. 7 and Fig. 9.
Compare with traditional existing structure, the master cylinder disclosed by the present invention, following effect can be produced.
1, when piston reciprocating displacement, the amount of being press-fitted increasing or reduce O ring gradually can be coordinated, and then make brake react more quick, sensitive.
2, when piston reciprocating displacement, the amount of being press-fitted increasing or reduce O ring gradually can be coordinated, and then obtains preferably operating handle.
The passage that 3, assembly opening still can be utilized to be formed, sequentially piston, sleeve and leakproof element are put into master cylinder and the oil storage space place of handle bracket, finally the permanent seat being equipped with pull bar is arranged on the assembly opening place of handle bracket, the assembling of overall brake master cylinder can be completed fast.
4, still can under the effect of leakproof element, prevent hydraulic oil from leaking outside via assembly opening, prevent hydraulic oil from leaking outside from the joining place of sleeve and locating bush, and under the effect of the 2nd O ring, prevent hydraulic oil from leaking outside from the place of wearing of pull bar, preferably sealing effectiveness can be produced to hydraulic oil.
Claims (20)
1. a master cylinder, one in order to brake hand handle is installed handle bracket on be connected with one for the oil storage space and of filling hydraulic oil for the master cylinder be connected with hydraulic tubing, being provided with one in this master cylinder inside can be subject to installed brake hand the piston driving shift reciprocately, the section place that this piston at least stretches into this master cylinder relatively at it is equipped with an annular groove, is arranged with one the one O ring in this annular groove place; It is characterized in that:
This piston is in the bottom land place of this annular groove, and be at least formed with a buffer field taken the form of inclined plane, this buffer field is tiltedly low towards one end of this master cylinder; And, distance between two cell walls of this annular groove, when this piston reciprocating displacement, can be changed it relative to the position with this buffer field for an O ring, in process by this piston reciprocating displacement, to an O ring generation expanded support effect in various degree, an O ring is made to produce the different amounts of being press-fitted and withstand voltage leaks.
2. master cylinder as claimed in claim 1, it is characterized in that, this oil storage space is located at the axial positions relative to this master cylinder of this handle bracket, this handle bracket is provided with an oil outlet for being connected with hydraulic tubing relative to this master cylinder one end, and this handle bracket is provided with an assembly opening relative to this oil storage space one end; The oil storage space inside of this handle bracket is provided with a sleeve be connected with this master cylinder, and one end that this piston stretches into this sleeve is relatively provided with one the 2nd O ring; The assembly opening place of this handle bracket is provided with a permanent seat, and this permanent seat has the locating bush stretching into this oil storage space and supply to be connected with this sleeve, is separately equipped with a pull bar be connected with this piston in the center of this locating bush; Be lined with a leakproof element between this permanent seat and this handle bracket, this leakproof element is integrally extended with one by the locating bush of this permanent seat and the sleeve pipe of this sleeve covers.
3. master cylinder as claimed in claim 1 or 2, is characterized in that, is formed with a turnover section between the cell wall that this piston is adjacent in this buffer field towards one end of this master cylinder.
4. master cylinder as claimed in claim 1 or 2, it is characterized in that, the gradient of this buffer field is between 5 ~ 50 degree.
5. master cylinder as claimed in claim 1 or 2, it is characterized in that, the distance between two cell walls of this annular groove is greater than the thickness at least 0.1mm of an O ring.
6. master cylinder as claimed in claim 1 or 2, is characterized in that, is formed with a turnover section between the cell wall that this piston is adjacent in this buffer field towards one end of this master cylinder; The gradient of this buffer field is between 5 ~ 50 degree; And the distance between two cell walls of this annular groove is greater than the thickness at least 0.1mm of an O ring.
7. master cylinder as claimed in claim 1 or 2, it is characterized in that, this buffer field is straight inclined plane shape.
8. master cylinder as claimed in claim 1 or 2, it is characterized in that, this buffer field is the inclined plane shape of protuberantia.
9. master cylinder as claimed in claim 2, it is characterized in that, this cannula end is provided with an inward flange, this sleeve be peripherally installed with an annular groove snapped in for this inward flange.
10. master cylinder as claimed in claim 2, it is characterized in that, this cannula end is provided with an inward flange, this sleeve be peripherally installed with an annular groove snapped in for this inward flange; This handle bracket is formed with a class filled in for this sleeve and this sleeve pipe in the joining place of this master cylinder and this oil storage space.
11. master cylinder as claimed in claim 2, is characterized in that, the front end of this leakproof element is provided with one in order to the outward flange of relative clipping between this assembly opening and this permanent seat.
12. master cylinder as claimed in claim 2, is characterized in that, this handle bracket is provided with at least one the first fuel return hole being connected to this oil storage space in this master cylinder for an O ring crank motion place.
13. master cylinder as claimed in claim 2, is characterized in that, this sleeve is provided with at least one the second fuel return hole being connected to this oil storage space.
14. master cylinder as claimed in claim 2, is characterized in that, this handle bracket is provided with at least one the first fuel return hole being connected to this oil storage space in this master cylinder for an O ring crank motion place; Sleeve is provided with at least one the second fuel return hole being connected to this oil storage space.
15. master cylinder as claimed in claim 1 or 2, is characterized in that, be provided with a spring between this master cylinder and this piston.
16. master cylinder as claimed in claim 12, is characterized in that, this handle bracket is formed with the oil return section that an internal diameter is greater than an O ring external diameter relatively in the position that this master cylinder is provided with the first fuel return hole relatively.
17. master cylinder as claimed in claim 2, it is characterized in that, this piston is provided with a constriction section at it relative to the position between an O ring and the 2nd O ring.
18. master cylinder as claimed in claim 2, it is characterized in that, one end of this this permanent seat of piston relative orientation is provided with a ball seat, and this pull bar is provided with a pommel socket-connected with this ball seat; This pull bar is articulated through a rotating shaft and the brake hand handle installed.
19. master cylinder as claimed in claim 2, is characterized in that, this pull bar is articulated through a rotating shaft and the brake hand handle installed; The body of rod of this pull bar is provided with a thread section, and this rotating shaft is provided with one for the screw with the thread section bolt of this pull bar.
20. 1 kinds of master cylinder, one in order to brake hand handle is installed handle bracket on be connected with one for the oil storage space and of filling hydraulic oil for the master cylinder be connected with hydraulic tubing, being provided with one in this master cylinder inside can be subject to installed brake hand the piston driving shift reciprocately, the section place that this piston at least stretches into this master cylinder relatively at it is equipped with an annular groove, is arranged with one the one O ring in this annular groove place; It is characterized in that:
This piston is in the bottom land place of this annular groove, and be at least formed with a buffer field taken the form of inclined plane, this buffer field is tiltedly low towards one end of this master cylinder; And the distance between two cell walls of this annular groove, when this piston reciprocating displacement, can change it relative to the position with this buffer field for an O ring; Oil storage space is located at the axial positions relative to this master cylinder of this handle bracket, and this handle bracket is provided with an oil outlet for being connected with hydraulic tubing relative to this master cylinder one end, and this handle bracket is provided with an assembly opening relative to this oil storage space one end; The oil storage space inside of this handle bracket is provided with a sleeve be connected with this master cylinder, and one end that this piston stretches into this sleeve is relatively provided with one the 2nd O ring; The assembly opening place of this handle bracket is provided with a permanent seat, and this permanent seat has the locating bush stretching into this oil storage space and supply to be connected with this sleeve, is separately equipped with a pull bar be connected with this piston in the center of this locating bush; Be lined with a leakproof element between this permanent seat and this handle bracket, this leakproof element is integrally extended with one by the locating bush of this permanent seat and the sleeve pipe of this sleeve covers; A turnover section is formed between the cell wall that this piston is adjacent in this buffer field towards one end of this master cylinder; This cannula end is provided with an inward flange, this sleeve be peripherally installed with an annular groove snapped in for this inward flange; This handle bracket is formed with a class filled in for this sleeve and this sleeve pipe in the joining place of this master cylinder and this oil storage space; The front end of this leakproof element is provided with one in order to the outward flange of relative clipping between this assembly opening and this permanent seat; This handle bracket is provided with at least one the first fuel return hole being connected to this oil storage space in this master cylinder for an O ring crank motion place; This sleeve is provided with at least one the second fuel return hole being connected to this oil storage space; Position between the master cylinder of this handle bracket and this piston is provided with a spring; This handle bracket is formed with the oil return section that an internal diameter is greater than an O ring external diameter relatively in the position that this master cylinder is provided with the first fuel return hole relatively: this piston is provided with a constriction section at it relative to the position between an O ring and the 2nd O ring: one end of this this permanent seat of piston relative orientation is provided with a ball seat, and this pull bar is provided with a pommel socket-connected with this ball seat; This pull bar is articulated through a rotating shaft and the brake hand handle installed; The body of rod of this pull bar is provided with a thread section, and this rotating shaft is provided with one for the screw with the thread section bolt of this pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474177.5A CN105416493A (en) | 2014-09-17 | 2014-09-17 | Brake master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474177.5A CN105416493A (en) | 2014-09-17 | 2014-09-17 | Brake master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105416493A true CN105416493A (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410474177.5A Pending CN105416493A (en) | 2014-09-17 | 2014-09-17 | Brake master cylinder |
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| Country | Link |
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| CN (1) | CN105416493A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996031377A1 (en) * | 1995-04-05 | 1996-10-10 | Robert Bosch Sistemi Frenanti S.P.A. | Tandem master cylinder with an improved sealing function |
| WO1999010225A2 (en) * | 1997-08-29 | 1999-03-04 | Hayes Brake, Inc. | Bicycle brake system |
| CN1651793A (en) * | 2004-02-05 | 2005-08-10 | 株式会社岛野 | Apparatus for hydraulic disk brake |
| CN201334002Y (en) * | 2008-12-30 | 2009-10-28 | 三阳工业股份有限公司 | Hydraulic brake system |
| CN102616328A (en) * | 2012-04-12 | 2012-08-01 | 黄石职业技术学院 | Hand brake device |
| CN103253337A (en) * | 2012-02-17 | 2013-08-21 | 亨通机械股份有限公司 | Hydraulic brake controller |
| CN103253336A (en) * | 2012-02-17 | 2013-08-21 | 亨通机械股份有限公司 | Brake master cylinder |
| WO2013179751A1 (en) * | 2012-05-31 | 2013-12-05 | 日立オートモティブシステムズ株式会社 | Master cylinder |
-
2014
- 2014-09-17 CN CN201410474177.5A patent/CN105416493A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996031377A1 (en) * | 1995-04-05 | 1996-10-10 | Robert Bosch Sistemi Frenanti S.P.A. | Tandem master cylinder with an improved sealing function |
| WO1999010225A2 (en) * | 1997-08-29 | 1999-03-04 | Hayes Brake, Inc. | Bicycle brake system |
| CN1651793A (en) * | 2004-02-05 | 2005-08-10 | 株式会社岛野 | Apparatus for hydraulic disk brake |
| CN201334002Y (en) * | 2008-12-30 | 2009-10-28 | 三阳工业股份有限公司 | Hydraulic brake system |
| CN103253337A (en) * | 2012-02-17 | 2013-08-21 | 亨通机械股份有限公司 | Hydraulic brake controller |
| CN103253336A (en) * | 2012-02-17 | 2013-08-21 | 亨通机械股份有限公司 | Brake master cylinder |
| CN102616328A (en) * | 2012-04-12 | 2012-08-01 | 黄石职业技术学院 | Hand brake device |
| WO2013179751A1 (en) * | 2012-05-31 | 2013-12-05 | 日立オートモティブシステムズ株式会社 | Master cylinder |
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Application publication date: 20160323 |