CN203322096U - Clutch master cylinder - Google Patents
Clutch master cylinder Download PDFInfo
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- CN203322096U CN203322096U CN2013203443110U CN201320344311U CN203322096U CN 203322096 U CN203322096 U CN 203322096U CN 2013203443110 U CN2013203443110 U CN 2013203443110U CN 201320344311 U CN201320344311 U CN 201320344311U CN 203322096 U CN203322096 U CN 203322096U
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- piston
- pump housing
- clutch master
- master cylinder
- liquid
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model relates to the field of automobile clutches, and aims to provide a clutch master cylinder. The clutch master cylinder comprises a cylinder body, a piston, a return spring and a push rod, wherein the return spring is used for piston resetting, the front end of the push rod extends into the cylinder body for pushing the piston, a pressure cavity is formed between the front end of the piston and the cylinder body, the side body of the piston is provided with an annular groove, a liquid supply cavity is formed between the annular groove and the side body of the cylinder body, the cylinder body is provided with a liquid inlet hole communicated with the liquid supply cavity and a liquid discharge hole communicated with the pressure cavity, and the cylinder body is provided with a liquid passing hole of which one end is communicated with the liquid inlet hole; when a pedal of the clutch is not stepped and the piston is positioned at an initial position, the other end of the liquid passing hole is communicated with the pressure cavity. When the clutch master cylinder is operated, the pressure at the liquid discharge hole is easy to form, and the speed of hydraulic oil backfilling into the pressure cavity is fast.
Description
Technical field
The utility model relates to the automobile clutch field, especially a kind of clutch master cylinder.
Background technique
Clutch master cylinder is the part that is connected to clutch foot plate and is connected with clutch booster by oil pipe, and effect is to gather the pedal travel information exchange to cross the effect of booster and make clutch realize separating.The disclosure of the invention of Chinese patent notification number CN102367844A a kind of automobile clutch master cylinder assembly, include cylinder body, be slidably fitted with piston in cylinder body, the rear end of piston is fixed with spring seat, between spring seat and cylinder body, is equipped with spring, and the front end of piston is connected with push rod, the end of spring seat is set with dust-proof cover, the front end of push rod is screwed with nut, on the sidewall of cylinder body, has plugged together fuel inlet fitting, offers oil inlet hole in fuel inlet fitting.When there is work in traditional clutch master cylinder, liquid outlet opening pressure is difficult for setting up and the slow deficiency in hydraulic oil backfill pressure chamber, therefore, while designing a kind of work, the clutch master cylinder of the easy foundation of liquid outlet opening pressure and hydraulic oil backfill pressure chamber speed, become problem demanding prompt solution.
The model utility content
The purpose of this utility model be in order to overcome current clutch master cylinder and to have work liquid outlet opening pressure be difficult for setting up and the hydraulic oil backfill for the slow deficiency of sap cavity, the easy clutch master cylinder of foundation and hydraulic oil backfill pressure chamber speed of liquid outlet opening pressure when a kind of work is provided.
Concrete technological scheme of the present utility model is:
A kind of clutch master cylinder, comprise the pump housing, piston, stretch in the pump housing for promoting the push rod of piston for Returnning spring and the front end of piston reset; Form pressure chamber between the front end of piston and the pump housing; The gusset of described piston is provided with annular groove; Between the gusset of annular groove and the pump housing, form for sap cavity; The pump housing is provided with and the inlet opening be communicated with for sap cavity and the liquid outlet opening be communicated with pressure chamber; The pump housing is provided with the liquid-through hole that an end is communicated with inlet opening; The let slip the clutch piston is not when initial position, and the other end of liquid-through hole is communicated with pressure chamber.When this clutch master cylinder is used, let slip the clutch, push rod promotes the partition that is communicated with that the piston reach makes liquid outlet opening and pressure chamber, the pressure rise of pressure chamber, hydraulic oil is discharged the oil pocket of input clutch booster and promotes disengaging yoke from liquid outlet opening, clutch compressing disc is separated with driven disc, realize the gearshift action; Release the clutch pedal, under action of reset spring, move to initial position after piston is rapid, and pressure chamber is communicated with supplying sap cavity by liquid outlet opening and inlet opening, the oil pocket decompression of clutch booster, clutch compressing disc and driven disc engagement.During this clutch master cylinder work, liquid outlet opening pressure is easily set up and hydraulic oil backfill pressure chamber speed.
As preferably, described piston comprise to front principal piece, leather cup section, block section, the spring positioning section connected successively be set in the sealing cup outside the leather cup section; Annular groove is positioned at the outer gusset of principal piece; The taper stage clip of the diameter coupling that Returnning spring is small end internal diameter and spring positioning section; The small end of Returnning spring is enclosed within outside the spring positioning section and compresses the block section, and the large end of Returnning spring compresses the pump housing.Diameter that Returnning spring is small end internal diameter and spring positioning section coupling the taper stage clip, taper stage clip radial stability is good and compression stroke is large.
As preferably, described piston is not when let slip the clutch is in initial position, and the rear side of the liquid-through hole the other end aligns with the front-end face of sealing cup.Can make rapidly the partition that is communicated with of liquid outlet opening and pressure chamber during let slip the clutch, the pressure rise of pressure chamber is rapid.
As preferably, described sealing cup be shaped as the taper type that point diameter is greater than the rear end diameter; The ear end face of sealing cup is provided with several grooves that is uniformly distributed along the circumference and connects with outer gusset; The front-end face of sealing cup is provided with the annular end slot that sectional shape is V-arrangement.Sealing cup is provided with groove and annular end slot can strengthen elasticity, when piston moves forward and backward, makes the gusset of the outer gusset of sealing cup and the pump housing keep good fit.
As preferably, the front end of described spring positioning section is provided with the stroke limit bar.Limited piston braking distance protection clutch booster is not damaged.
As preferably, the diameter of described liquid-through hole is 1:18 to 1:22 with the ratio of pump housing internal diameter.When taking into account the hydraulic oil backfill for sap cavity speed and avoiding piston movement, primary cup scratches.
As preferably, the diameter of described inlet opening is 1:5 to 1:7 with the ratio of pump housing internal diameter.When meeting piston and being repositioned to initial position for sap cavity to the rapid fluid infusion of pressure chamber.
As preferably, the front end of described push rod is provided with the pushing block of cutting somebody's hair with spherical, and the rear end of piston is provided with and the sphere depression of the spherical coupling of cutting somebody's hair; The rear end of the pump housing is provided with the trim ring that is enclosed within outside push rod and pushes down pushing block.The front end of push rod is provided with the pushing block of cutting somebody's hair with spherical, and the rear end of piston is provided with the sphere depression with the spherical coupling of cutting somebody's hair, and push rod promotes piston can not produce interference.
Compared with prior art, the beneficial effects of the utility model are: one. during this clutch master cylinder work, liquid outlet opening pressure is easily set up and hydraulic oil backfill pressure chamber speed.Two. diameter that Returnning spring is small end internal diameter and spring positioning section coupling the taper stage clip, taper stage clip radial stability is good and compression stroke is large.Three. the rear side of the liquid-through hole the other end aligns with the front-end face of sealing cup, can make rapidly the partition that is communicated with of liquid outlet opening and pressure chamber during let slip the clutch, and the pressure rise of pressure chamber is rapid.Four. sealing cup is provided with groove and annular end slot can strengthen elasticity, when piston moves forward and backward, makes the gusset of the outer gusset of sealing cup and the pump housing keep good fit.Five. stroke limit bar limited piston braking distance protection clutch booster is not damaged.Six. the diameter of liquid-through hole is 1:18 to 1:22 with the ratio of pump housing internal diameter, and when taking into account the hydraulic oil backfill for sap cavity speed and avoiding piston movement, primary cup scratches.Seven. the diameter of inlet opening is 1:5 to 1:7 with the ratio of pump housing internal diameter, when meeting piston and being repositioned to initial position for sap cavity to the rapid fluid infusion of pressure chamber.Eight. the front end of push rod is provided with the pushing block of cutting somebody's hair with spherical, and the rear end of piston is provided with the sphere depression with the spherical coupling of cutting somebody's hair, and push rod promotes piston can not produce interference.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the plan view of sealing cup in Fig. 1.
In figure: Returnning spring-1, the pump housing-2, inlet opening-21, liquid outlet opening-22, liquid-through hole-23, piston-3, annular groove-31, principal piece-32, leather cup section-33, block section-34, spring positioning section-35, sealing cup-36, groove-37, annular end slot-38, sphere depression-39, push rod-4, pushing block-41, spherical cutting somebody's hair-42, pressure chamber-5, confession sap cavity-6, stroke limit bar-7, trim ring-8.
Embodiment
Below in conjunction with shown in accompanying drawing, the utility model is described further.
As shown in accompanying drawing 1, accompanying drawing 2: a kind of clutch master cylinder comprises that the pump housing 2, piston 3, the Returnning spring 1 resetted for piston 3 and front end stretch into the push rod 4 for promoting piston 3 in the pump housing 2; Form pressure chamber 5 between the front end of piston 3 and the pump housing 2; The gusset of described piston 3 is provided with annular groove 31; Between the gusset of annular groove 31 and the pump housing 2, form for sap cavity 6; The pump housing 2 has and the inlet opening 21 be communicated with for sap cavity 6 and the liquid outlet opening 22 be communicated with pressure chamber 5; The pump housing 2 has the liquid-through hole 23 that an end is communicated with inlet opening 21; Let slip the clutch piston 3 is not when initial position, and the other end of liquid-through hole 23 is communicated with pressure chamber 5.
Described piston 3 comprise to front principal piece 32, leather cup section 33, block section 34, the spring positioning section 35 connected successively be set in the sealing cup 36 outside leather cup section 33; Annular groove 31 is positioned at the outer gusset of principal piece 32; Returnning spring 1 is the taper stage clip that the small end internal diameter coordinates with the diameter transition of spring positioning section 35; The small end of Returnning spring 1 is enclosed within outside spring positioning section 35 and compresses block section 34, and the large end of Returnning spring 1 compresses the pump housing 2.In the present embodiment, the large end of Returnning spring 1 compresses the front end of pressure chamber 5.
Described piston 3 is not when let slip the clutch is in initial position, and the rear side of liquid-through hole 23 the other ends aligns with the front-end face of sealing cup 36.
Described sealing cup 36 be shaped as the taper type that point diameter is greater than the rear end diameter; The ear end face of sealing cup 36 has eight grooves 37 that are uniformly distributed along the circumference and connect with outer gusset; The front-end face of sealing cup 36 has the annular end slot 38 that sectional shape is V-arrangement.
The front end of described spring positioning section 35 has stroke limit bar 7.
The diameter of described liquid-through hole 23 is 1:20 with the ratio of the pump housing 2 internal diameters.
The diameter of described inlet opening 21 is 1:6 with the ratio of the pump housing 2 internal diameters.
The front end of described push rod 4 has with spherical 42 the pushing block 41 of cutting somebody's hair, and the rear end of piston 3 has the sphere depression 39 with spherical 42 Spielpassung of cutting somebody's hair; The rear end of the pump housing 2 has the trim ring 8 that is enclosed within outside push rod 4 and pushes down pushing block 41.
When this clutch master cylinder is used, let slip the clutch, push rod 4 promotes the partition that is communicated with that pistons 3 reaches make liquid outlet opening 22 and pressure chamber 5, the pressure rise of pressure chamber 5, hydraulic oil is discharged the oil pocket of input clutch booster and promotes disengaging yoke from liquid outlet opening 22, clutch compressing disc is separated with driven disc, realize the gearshift action; Release the clutch pedal, under Returnning spring 1 effect, move to initial position after piston 3 is rapid, and pressure chamber 5 is communicated with supplying sap cavity 6 by liquid outlet opening 22 and inlet opening 21, the oil pocket decompression of clutch booster, clutch compressing disc and driven disc engagement.
The beneficial effects of the utility model are: during this clutch master cylinder work, liquid outlet opening pressure is easily set up and hydraulic oil backfill pressure chamber speed.Diameter that Returnning spring is small end internal diameter and spring positioning section coupling the taper stage clip, taper stage clip radial stability is good and compression stroke is large.The rear side of the liquid-through hole the other end aligns with the front-end face of sealing cup, can make rapidly the partition that is communicated with of liquid outlet opening and pressure chamber during let slip the clutch, and the pressure rise of pressure chamber is rapid.Sealing cup is provided with groove and annular end slot can strengthen elasticity, when piston moves forward and backward, makes the gusset of the outer gusset of sealing cup and the pump housing keep good fit.Stroke limit bar limited piston braking distance protection clutch booster is not damaged.The diameter of liquid-through hole is 1:20 with the ratio of pump housing internal diameter, and when taking into account the hydraulic oil backfill for sap cavity speed and avoiding piston movement, primary cup scratches.The diameter of inlet opening is 1:6 with the ratio of pump housing internal diameter, when meeting piston and being repositioned to initial position for sap cavity to the rapid fluid infusion of pressure chamber.The front end of push rod is provided with the pushing block of cutting somebody's hair with spherical, and the rear end of piston is provided with the sphere depression with the spherical coupling of cutting somebody's hair, and push rod promotes piston can not produce interference.
It is apparent to one skilled in the art that the utility model can be changed into various ways, and such change is not thought and broken away from scope of the present utility model.All so apparent modifications of the technician to described field, within being included in the scope of this claim.
Claims (8)
1. a clutch master cylinder, comprise the pump housing, piston, stretch in the pump housing for promoting the push rod of piston for Returnning spring and the front end of piston reset; Form pressure chamber between the front end of piston and the pump housing; It is characterized in that: the gusset of described piston is provided with annular groove; Between the gusset of annular groove and the pump housing, form for sap cavity; The pump housing is provided with and the inlet opening be communicated with for sap cavity and the liquid outlet opening be communicated with pressure chamber; The pump housing is provided with the liquid-through hole that an end is communicated with inlet opening; The let slip the clutch piston is not when initial position, and the other end of liquid-through hole is communicated with pressure chamber.
2. clutch master cylinder according to claim 1 is characterized in that: described piston comprise to front principal piece, leather cup section, block section, the spring positioning section connected successively be set in the sealing cup outside the leather cup section; Annular groove is positioned at the outer gusset of principal piece; The taper stage clip of the diameter coupling that Returnning spring is small end internal diameter and spring positioning section; The small end of Returnning spring is enclosed within outside the spring positioning section and compresses the block section, and the large end of Returnning spring compresses the pump housing.
3. clutch master cylinder according to claim 2, it is characterized in that: described piston is not when let slip the clutch is in initial position, and the rear side of the liquid-through hole the other end aligns with the front-end face of sealing cup.
4. according to the described clutch master cylinder of claim 2 or 3, it is characterized in that: described sealing cup be shaped as the taper type that point diameter is greater than the rear end diameter; The ear end face of sealing cup is provided with several grooves that is uniformly distributed along the circumference and connects with outer gusset; The front-end face of sealing cup is provided with the annular end slot that sectional shape is V-arrangement.
5. according to the described clutch master cylinder of claim 2 or 3, it is characterized in that: the front end of described spring positioning section is provided with the stroke limit bar.
6. according to claim 1 or 2 or 3 described clutch master cylinders, it is characterized in that: the diameter of described liquid-through hole is 1:18 to 1:22 with the ratio of pump housing internal diameter.
7. according to claim 1 or 2 or 3 described clutch master cylinders, it is characterized in that: the diameter of described inlet opening is 1:5 to 1:7 with the ratio of pump housing internal diameter.
8. according to claim 1 or 2 or 3 described clutch master cylinders, it is characterized in that: the front end of described push rod is provided with the pushing block of cutting somebody's hair with spherical, and the rear end of piston is provided with the sphere depression with the spherical coupling of cutting somebody's hair; The rear end of the pump housing is provided with the trim ring that is enclosed within outside push rod and pushes down pushing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203443110U CN203322096U (en) | 2013-06-14 | 2013-06-14 | Clutch master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203443110U CN203322096U (en) | 2013-06-14 | 2013-06-14 | Clutch master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322096U true CN203322096U (en) | 2013-12-04 |
Family
ID=49661451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203443110U Expired - Fee Related CN203322096U (en) | 2013-06-14 | 2013-06-14 | Clutch master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322096U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382972A (en) * | 2013-06-14 | 2013-11-06 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
| CN105333025A (en) * | 2015-11-11 | 2016-02-17 | 湖南汽车制造有限责任公司 | Clutch slave cylinder and automobile |
-
2013
- 2013-06-14 CN CN2013203443110U patent/CN203322096U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382972A (en) * | 2013-06-14 | 2013-11-06 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
| CN103382972B (en) * | 2013-06-14 | 2016-08-17 | 宁波神丰汽车部件有限公司 | Clutch master cylinder |
| CN105333025A (en) * | 2015-11-11 | 2016-02-17 | 湖南汽车制造有限责任公司 | Clutch slave cylinder and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20180614 |