CN106015393A - Clutch master cylinder - Google Patents
Clutch master cylinder Download PDFInfo
- Publication number
- CN106015393A CN106015393A CN201610645021.8A CN201610645021A CN106015393A CN 106015393 A CN106015393 A CN 106015393A CN 201610645021 A CN201610645021 A CN 201610645021A CN 106015393 A CN106015393 A CN 106015393A
- Authority
- CN
- China
- Prior art keywords
- piston
- oil
- spool
- master cylinder
- clutch master
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D48/04—Control by fluid pressure providing power assistance
Abstract
The invention discloses a clutch master cylinder. The clutch master cylinder comprises a control valve component, wherein the control valve component comprises a stop screw, a piston, a valve element, a seal cup, a reset part and a spring seat; when a push rod is force-free, under the action of an in-cylinder spring, the piston of the control valve component is propped against the stop screw, and the valve element is propped out of a valve hole for a small distance to ensure that an oil outlet of the valve element is located outside the valve hole, so that the control valve component of the clutch master cylinder is in an open state; when the push rod squeezes to the inside of a cylinder body, the piston pushes inwards, the stop screw leaves the end, with a limit key slot, of the piston, the valve element loses the propping stop screw and slowly enters the valve hole under the action of the reset part, and the oil outlet also enters the valve hole, so that the control valve component is in a closed state, and an oil path in the clutch master cylinder is in a cut-off state. According to the clutch master cylinder, indirect control of the push rod to connection and disconnection of the oil path in an oil cup is realized through the control valve component, and the flexibility of the clutch master cylinder is effectively improved.
Description
Technical field
The present invention relates to auto parts machinery, it is a kind of clutch master cylinder.
Background technology
Clutch master cylinder is attached to clutch foot plate the part being connected by oil pipe with clutch booster.Effect
It is to gather pedal travel information to make clutch realize separating by the effect of booster.Master cylinder is an important portion of clutch
Part, the structural behaviour of master cylinder directly influences the work efficiency of brake, and in prior art, master cylinder exists oil circuit and the most freely causes work
The problem of plug sensitivity decrease.
Summary of the invention
The goal of the invention of the present invention is the problem the most smooth in order to solve oil circuit, it is provided that a kind of clutch master cylinder, by controlling
Oil circuit is controlled by valve accurately, improves piston sensitivity.
In order to realize foregoing invention purpose, present invention employs techniques below scheme: a kind of clutch master cylinder, including spacing
Screw, piston, spool, sealing cup, return unit and spring base；
Piston, middle part is provided with the spacing keyway placed for stop screw, and described piston is provided with valve opening towards one end of spool,
Described valve opening connects with spacing keyway, and the two ends outer wall of piston is all arranged with the sealing ring of annular；
Spool, rounded tubulose, be arranged in valve opening, spool one end close, spool be sequentially provided with from front to back fuel feed hole,
Oil outlet, the fixture installed for sealing cup and valve seat, fuel feed hole is positioned at valve opening, and oil outlet is positioned at that spool is closed
End, oil outlet is arranged at the sidewall of spool, and oil outlet is towards the inwall of valve opening；
Spring base, in tubular, spring base is attached at piston one end and together moves with piston, the sidewall of spring base or diapire
Being provided with the drain oil passed through for the clutch oil in oil outlet, described return unit, sealing cup and valve seat are respectively positioned in spring base；
Return unit, diapire in one end conflict spring base, other end conflict valve seat；
Sealing cup, is fixed on fixture, fixing leather cup by return unit elastic force tightly be posted by piston valve opening
The one end at place；
When control valve assembly is in open mode, and stop screw compresses the one end at spool fuel feed hole place, and return unit is pressed
Contracting, oil outlet is in outside valve opening；
When control valve assembly is closed, and stop screw at one end separates with spool fuel feed hole, return unit extrudes
The oil outlet of spool enters in valve opening, and the piston face at valve opening place is close to by sealing cup.
In the present invention, the length of spool does not limit, and the length of spool can be less than the length of valve opening, by spacing
Set up the collocation structure growth to the compensating property of length of spool on screw, increase the displacement of spool with this.But
For cost consideration, currently preferred, the length of described spool is more than the length of valve opening.
Preferably, described return unit is that the small end of volute spring described in volute spring is towards valve seat.
Preferably, the sidewall of described spring base is provided with 4 drain oils facing each other, and diapire is equipped with 1 drain oil.
Preferably, described fixture is positioned at the sidewall of spool sidewall, and fixture is made up of ring-type bulge loop and ring-shaped insert groove, ring
Shape caulking groove is between ring-type bulge loop and valve seat, and described sealing cup is sheathed on ring-shaped insert groove and the surface of ring-type bulge loop.
Preferably, to cross the cross section in axle center L-shaped for described sealing cup
Preferably, the cup being arranged over fixing for lubricating cup of described cylinder body, described cup and the one-body molded setting of cylinder body,
Cup and inboard wall of cylinder block pass through oil communication.
Preferably, described oil-out is positioned at cylinder body and closes on bottom surface or the sidewall of one end.
Preferably, described piston relative with valve opening and outwardly one end be lower cancave cambered surface, described push rod and piston conflict one
End is provided with the cambered surface block of protrusion, and described cambered surface block coordinates with cancave cambered surface.
Preferably, the untight one end of described cylinder body is fixed with dust cover, is additionally provided with between described dust cover and cambered surface block
Elastic spring, described elastic spring is dish shaped in form, and push rod is arranged in the middle part of elastic spring, and it is embedding that described inboard wall of cylinder block is additionally provided with annular
Groove, is embedded with push rod packing ring in described annular caulking groove, and inside for elastic spring clamping, described push rod packing ring are situated between by described push rod packing ring
Between elastic spring and dust cover.
Compared with prior art, have employed the clutch master cylinder of technique scheme, have the advantages that
Using the clutch master cylinder of the present invention, when push rod pitches non-stress, the spring base of control valve assembly is by external force
Effect, by piston tightly press on stop screw, stop screw is positioned at one end of the spacing keyway of piston, and is supported by spool
Go out valve opening a bit of, it is ensured that the oil outlet of spool is positioned at outside valve opening, make clutch master cylinder be in the state of unlatching, clutch main valve
Interior oil circuit is in circulation status.
When push rod fork extruding in cylinder body, piston inwardly promotes, and stop screw slowly leaves the spacing keyway one of piston
End, and spool loses the stop screw of conflict, and make spool slowly enter in valve opening under the effect of return unit, oil outlet is in the lump
Enter valve opening so that control valve assembly is in the state of closedown, and the oil circuit in clutch main valve is in disconnection state.
Realize push rod fork by control valve assembly the indirect of oil circuit break-make in lubricating cup is controlled, be effectively improved clutch master cylinder
Sensitivity.
Accompanying drawing explanation
Fig. 1 is the half sectional view of clutch master cylinder embodiment of the present invention；
Fig. 2 is the partial enlarged drawing (control valve assembly opening) in Fig. 1 at A；
Fig. 3 is the partial enlarged drawing (control valve assembly closed mode) in Fig. 1 at A；
Fig. 4 is the structural representation of clutch master cylinder embodiment of the present invention；
Fig. 5 is the fractionation structural representation of clutch master cylinder embodiment of the present invention；
Fig. 6 is the exploded perspective view of control valve assembly in the present invention；
Fig. 7 is the structural representation of piston in the present invention；
Fig. 8 is the structural representation of spool in the present invention；
Fig. 9 is the partial enlarged drawing in Fig. 1 at B.
Reference: 1, cylinder body；1a, oil circuit；1b, oil-out；1c, cup；10, piston packing；11, elastic spring；
12, push rod packing ring；13, dust cover；14, push rod；16, push rod fork；18, lubricating cup；2, cylinder inner spring；3, spring base；30, drain the oil
Hole；4, return unit；5, sealing cup；6, spool；61, oil outlet；62, ring-type bulge loop；63, valve seat；7, stop screw；8, screw
Sealing ring；9, piston；90, spacing keyway；91, valve opening.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described further.
Clutch master cylinder as shown in Figure 1 to 9, including cylinder body 1, push rod fork 16, push rod 14 and lubricating cup 18, cylinder body 1 and oil
Being provided with the oil circuit 1a passed through for clutch oil between Bei, the tubulose that described cylinder body 1 is closed in one end, the surface of cylinder body 1 is provided with fuel-displaced
Mouth 1b, described oil-out 1b connect cylinder body 1 inwall, it is characterised in that: it is provided with control valve assembly, control valve group in described cylinder body 1
Part is inconsistent with push rod 14, is additionally provided with the cylinder inner spring 2 resetted for control valve assembly in cylinder body 1.
Cylinder body 1 be arranged over the cup 1c, cup 1c fixing for lubricating cup 18 and the one-body molded setting of cylinder body, cup 1c with
Inboard wall of cylinder block is connected by oil circuit 1a.Strengthening the fixing of lubricating cup 18 by cup 1c, one-body molded setting can be effectively improved oil
The fixing fastness of cup 18.
Oil-out 1b is positioned at cylinder body 1 and closes on the sidewall of one end, and oil-out 1b may be located on diapire, but opens on diapire
By influencing whether the fixing of cylinder inner spring 2 behind hole, therefore it is arranged at sidewall and can avoid the impact on cylinder inner spring 2；Next, if
It is placed in sidewall, oil circuit can be made to carry out 90 ° turns round, reduce the installation length of clutch master cylinder, if oil-out 1b is arranged
Oil circuit then can be made to prolong extending the most further of cylinder body 1 in diapire, have to stay in the axial direction when causing clutch master cylinder to install
Certain space.
Piston 9 relative with valve opening 91 and outwardly one end be the cancave cambered surface 92 of concave downward, push rod 14 and piston 9 conflict one
End is provided with the cambered surface block of protrusion, and cambered surface block coordinates with cancave cambered surface 92, and curved surface coordinates can increase contact area, reduces piston and pushes away
The abrasion of bar, and make the power on push rod to be applied to uniformly on piston.
The untight one end of cylinder body 1 is fixed with dust cover 13, is additionally provided with elastic spring 11 between dust cover 13 and cambered surface block,
Elastic spring 11 is dish shaped in form, and push rod is arranged in the middle part of elastic spring 11, and inboard wall of cylinder block is additionally provided with annular caulking groove 120, and annular is embedding
Being embedded with push rod packing ring 12 in groove 120, push rod packing ring 12 is by inside for elastic spring 11 clamping, and push rod packing ring 12 is between elastic spring
Between 11 and dust cover 13.
The Main Function of dust cover 13 is to prevent dust etc. from entering cylinder body 1, secondly coordinates elastic spring 11 will push away
Bar is ajusted, and makes the level that push rod 14 is in Fig. 9；The effect of push rod packing ring 12 is to be dust cover 13 and steel wire
Gap between back-up ring 11 is closed, it is to avoid clutch oil leakage goes out.
Control valve assembly: include stop screw 7, piston 9, spool 6, sealing cup 5, return unit 4 and spring base 3 successively.
Piston 9: as shown in Figure 6 and Figure 7, is provided with the spacing keyway 90 placed for stop screw 7, piston 9 court in the middle part of piston 9
Be provided with valve opening 91 to one end of spool 6, valve opening 91 connects with spacing keyway 90, and the two ends outer wall of piston 9 is all arranged with annular
Piston packing 10；The effect of piston packing 10 is to prevent the oil in lubricating cup from spilling from the sidewall of piston.
Spool 6: as shown in Fig. 2, Fig. 3 and Fig. 8, the rounded tubulose of spool, it is arranged in valve opening 91, spool one end is closed,
Spool is sequentially provided with fuel feed hole 60, oil outlet 61, the fixture installed for sealing cup 5 and valve seat 63, fuel feed hole from front to back
60 are positioned at valve opening 91, and oil outlet 61 is positioned at the sidewall of spool, and oil outlet 61 is arranged at the sidewall of spool, and oil outlet 61 towards
The inwall of valve opening 91；The length of spool 6 is more than the length of valve opening 91.The tabular that valve seat 63 is rounded, the external diameter of valve seat 63 is more than
The external diameter of sealing cup 5.
Fixture: be positioned at the sidewall of spool sidewall, fixture is made up of ring-type bulge loop 62 and ring-shaped insert groove, and ring-shaped insert groove is situated between
Between ring-type bulge loop 62 and valve seat 63, sealing cup 5 is sheathed on ring-shaped insert groove and the surface of ring-type bulge loop 62.Ring-type bulge loop 62
External diameter less than the external diameter of valve seat 63.
Spring base 3: spring base 3 is cup-shaped, rim of a cup with the crimping turned up, spring base be attached at piston 9 one end and with work
Plug 9 together moves, and the sidewall of spring base 3 or diapire are provided with the drain oil 30 passed through for the clutch oil in oil outlet 61, resets
Part 4, sealing cup 5 and valve seat 63 are respectively positioned in spring base；The sidewall of spring base 3 is provided with 4 drain oils 30 facing each other, the end
1 drain oil 30 it is equipped with on wall.
Return unit 4: diapire in one end conflict spring base 3, other end conflict valve seat 63；Return unit 4 is volute spring, taper
The small end of spring is towards valve seat 63.
Sealing cup 5: be fixed on fixture, fixing leather cup by return unit 4 elastic force tightly be posted by piston 9 valve
The one end at place, hole 91；The cross section that axle center crossed by sealing cup 5 is L-shaped.
When control valve assembly is in open mode, and stop screw 7 compresses the one end at spool 6 fuel feed hole 60 place, return unit 4
Being compressed, oil outlet 61 is in outside valve opening 91；
When control valve assembly is closed, stop screw 7 at one end separates with spool 6 fuel feed hole 60, return unit 4
The oil outlet 61 of extruding spool 6 enters in valve opening 91, and piston 9 surface at valve opening 91 place is close to by sealing cup 5.
When above-mentioned control valve assembly is applied to clutch master cylinder, it is arranged in the cylinder body 1 of clutch master cylinder, cylinder body 1
It is provided above cup 1c, cup 1c and is used for installing lubricating cup 18, in lubricating cup 18 and cup, be placed with clutch oil.
Being additionally provided with cylinder inner spring 2 in cylinder body 1, cylinder inner spring 2 is conflicted the outer rim crimping of spring base 3, the strength of cylinder inner spring 2
Degree coefficient is much larger than the stiffness factor of volute spring 4 (return unit), and briefly cylinder inner spring 2 is harder, is difficult to be compressed.
As depicted in figs. 1 and 2, when control valve assembly does not stresses, cylinder inner spring 2 extrusion spring seat 3, spring base to the right
3 abut piston 9, make the spacing keyway 90 on piston 9 conflict completely with stop screw 7, make stop screw 7 that spool 6 is produced one
Individual thrust to the left, and thrust is more than the elastic compression force of volute spring 4, spool 6 is released valve opening 91 a small distance, makes valve
Oil outlet 61 on core 6 is positioned at outside valve opening 91, cuts sealing cup 5 contactless with piston 9 surface at valve opening 91 place, makes lubricating cup 18
Interior clutch oil can flow in piston 9 smoothly in oil circuit 1a, and flows out in oil outlet 61 in the middle part of spool 6, enters
Enter in spring base 3, then the drain oil 30 passing through spring base 3 surface enters in cylinder body 1, and (as shown in dashed line in figure 2, i.e. clutch is oily
The path of flowing), finally the oil-out 1b from cylinder body 1 surface flows out, and forms the loop of a clutch oil flowing.
As shown in figures 1 and 3, when control valve assembly receives push rod fork 14 pressure to the left, and pressure is more than bullet in cylinder
The elastic force of spring 2, cylinder inner spring 2 is compressed, and control valve assembly is overall is advanced cylinder body 1 internal to the left by piston 9, loses stop screw
The conflict of 7, spool 6 is pressed in the valve opening 61 of piston 6 under the effect of volute spring 4, and makes the sealing cup on spool 6 surface
5 piston faces compressing valve opening 91 place tightly, make control valve module enclosure and closing, and clutch oil cannot pass through control valve group
Part.
Realize push rod fork by control valve assembly the indirect of oil circuit break-make in lubricating cup is controlled, be effectively improved clutch master cylinder
Sensitivity.
The above makes the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from this
On the premise of bright principle, it is also possible to make some modification and improvement, these also should be regarded as protection scope of the present invention.
Claims (10)
1. a clutch master cylinder, including cylinder body (1), push rod fork (16), push rod (14) and lubricating cup (18), cylinder body (1) and lubricating cup
Between be provided with the oil circuit (1a) passed through for clutch oil, the tubulose that described cylinder body (1) is closed in one end, the surface of cylinder body (1) is provided with
Oil-out (1b), described oil-out (1b) connection cylinder body (1) inwall, it is characterised in that: described cylinder body is provided with control valve group in (1)
Part, control valve assembly is inconsistent with push rod (14), is additionally provided with elastic component (2) in the cylinder for the reset of control valve assembly in cylinder body (1)；
Control valve assembly, including stop screw (7), piston (9), spool (6), sealing cup (5), return unit (4) and spring base
(3)；
Piston (9), middle part is provided with the spacing keyway (90) placed for stop screw (7), and described piston (9) is towards spool (6)
One end is provided with valve opening (91), and described valve opening (91) connects with spacing keyway (90), and the two ends outer wall of piston (9) is all arranged with ring
The piston packing (10) of shape；
Spool (6), rounded tubulose, it is arranged in valve opening (91), spool one end is closed, and spool is sequentially provided with oil-feed from front to back
Hole (60), oil outlet (61), the fixture (62) installed for sealing cup (5) and valve seat (63), fuel feed hole (60) is positioned at valve opening
(91), in, oil outlet (61) is positioned at spool and closes the sidewall surfaces of one end, and oil outlet (61) is arranged at the sidewall of spool, and fuel-displaced
Hole (61) is towards the inwall of valve opening (91)；
Spring base (3), in tubular, spring base is attached at piston (9) one end and together moves with piston (9), the side of spring base (3)
Wall or diapire are provided with the drain oil (30) passed through for the clutch oil in oil outlet (61), described return unit (4), sealing cup
(5) it is respectively positioned in spring base with valve seat (63)；
Return unit (4), one end conflict spring base (3) interior diapire, other end conflict valve seat (63)；
Sealing cup (5), is fixed on fixture (62), fixing leather cup by return unit (4) elastic force tightly be posted by work
The one end at plug (9) valve opening (91) place；
When control valve assembly is in open mode, and stop screw (7) compresses the one end at spool (6) fuel feed hole (60) place, reset
Part (4) is compressed, and oil outlet (61) is in valve opening (91) outward；
When control valve assembly is closed, stop screw (7) at one end separates with spool (6) fuel feed hole (60), resets
The oil outlet (61) of part (4) extruding spool (6) enters in valve opening (91), and valve opening (91) place is close to by sealing cup (5)
Piston (9) surface.
Clutch master cylinder the most according to claim 1, it is characterised in that: the length of described spool (6) is more than valve opening (91)
Length.
Clutch master cylinder the most according to claim 1, it is characterised in that: described return unit (4) is to bore described in volute spring
The small end of shape spring is towards valve seat (63).
Clutch master cylinder the most according to claim 1, it is characterised in that: the sidewall of described spring base (3) is provided with 4 two-by-two
Relative drain oil (30), diapire is provided with 1 drain oil (30).
Clutch master cylinder the most according to claim 1, it is characterised in that: described fixture (62) is positioned at the side of spool sidewall
Wall, fixture (62) is made up of ring-type bulge loop and ring-shaped insert groove, and ring-shaped insert groove is between ring-type bulge loop and valve seat (63), described
Sealing cup (5) is sheathed on ring-shaped insert groove and the surface of ring-type bulge loop.
Clutch master cylinder the most according to claim 5, it is characterised in that: described sealing cup (5) cross axle center cross section in
" L " type.
7. according to the clutch master cylinder described in any one of claim 1 to 6, it is characterised in that: described cylinder body be arranged over supply
The cup (1c) that lubricating cup (18) is fixing, described cup (1c) and the one-body molded setting of cylinder body, cup (1c) passes through with inboard wall of cylinder block
Oil circuit (1a) connects.
8. according to the clutch master cylinder described in any one of claim 1 to 6, it is characterised in that: described oil-out (1b) is positioned at cylinder
Body (1) is closed on bottom surface or the sidewall of one end.
9. according to the clutch master cylinder described in any one of claim 1, it is characterised in that: described piston (9) and valve opening (91) phase
To and outwardly one end be the cancave cambered surface (92) of concave downward, one end that described push rod (14) and piston (9) are conflicted is provided with protrusion
Cambered surface block, described cambered surface block coordinates with cancave cambered surface (92).
Clutch master cylinder the most according to claim 9, it is characterised in that: described cylinder body (1) untight one end is fixed with
Dust cover (13), is additionally provided with elastic spring (11) between described dust cover (13) and cambered surface block, described elastic spring (11) is in dish
Shape, push rod is arranged in the middle part of elastic spring (11), and described inboard wall of cylinder block is additionally provided with annular caulking groove (120), described annular caulking groove
(120) being embedded with push rod packing ring (12) in, described push rod packing ring (12) is by elastic spring (11) inwardly clamping, described push rod packing ring
(12) between elastic spring (11) and dust cover (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645021.8A CN106015393A (en) | 2016-08-05 | 2016-08-05 | Clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645021.8A CN106015393A (en) | 2016-08-05 | 2016-08-05 | Clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106015393A true CN106015393A (en) | 2016-10-12 |
Family
ID=57135015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610645021.8A Pending CN106015393A (en) | 2016-08-05 | 2016-08-05 | Clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578458A (en) * | 2018-10-26 | 2019-04-05 | 余姚鑫仕达汽车部件有限公司 | A kind of clutch master cylinder |
| CN113685451A (en) * | 2021-09-02 | 2021-11-23 | 江苏兴锻智能装备科技有限公司 | Pressure stabilizing mechanism of wet clutch of press machine |
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| CN202402514U (en) * | 2012-01-10 | 2012-08-29 | 瑞安市博欧汽配有限公司 | Master cylinder of clutch |
| CN202418311U (en) * | 2012-01-10 | 2012-09-05 | 瑞安市博欧汽配有限公司 | Clutch master cylinder |
| CN202719043U (en) * | 2012-06-13 | 2013-02-06 | 浙江荣众机械有限公司 | Clutch master pump |
| CN204279395U (en) * | 2014-10-24 | 2015-04-22 | 安思通（厦门）制动系统有限公司 | Master brake cylinder |
| CN205859004U (en) * | 2016-08-05 | 2017-01-04 | 林伟 | A kind of clutch master cylinder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578458A (en) * | 2018-10-26 | 2019-04-05 | 余姚鑫仕达汽车部件有限公司 | A kind of clutch master cylinder |
| CN109578458B (en) * | 2018-10-26 | 2020-10-16 | 余姚鑫仕达汽车部件有限公司 | Clutch master cylinder |
| CN113685451A (en) * | 2021-09-02 | 2021-11-23 | 江苏兴锻智能装备科技有限公司 | Pressure stabilizing mechanism of wet clutch of press machine |
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Application publication date: 20161012 |