CN2928575Y - Clutch booster - Google Patents
Clutch booster Download PDFInfo
- Publication number
- CN2928575Y CN2928575Y CN 200520047905 CN200520047905U CN2928575Y CN 2928575 Y CN2928575 Y CN 2928575Y CN 200520047905 CN200520047905 CN 200520047905 CN 200520047905 U CN200520047905 U CN 200520047905U CN 2928575 Y CN2928575 Y CN 2928575Y
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- Prior art keywords
- valve body
- control valve
- control
- communicated
- compressed air
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Abstract
The utility mode relates to a clutch booster for car, comprising a control system and a driving system, wherein the control system is constructed by means that a control piston is arranged inside the control valve body in sliding fit, and between the top, or bottom of the control piston and the control valve body an oil hydraulic cavity communicated with the oil inlet on the control valve body is formed; Between the circular groove on the middle of the control piston and the control valve body an aerostatic cavity communicated with the compressed air inlet on the control valve body is formed; Between the top, bottom of the control piston and the end closure of the control valve body an air outlet cavity communicated with the compressed air outlet on the control valve body is formed; Between the top, or bottom of the control piston and the end closure of the control valve body a pressing spring is arranged to hold; The compressed air outlet on the control valve body is communicated with the compressed air inlet on the driving cylinder of the driving system via a U-shaped pipe. The utility model with a simple structure and low cost, works in high reliability.
Description
Technical field
The utility model relates to a kind of vehicle transmission equipment, particularly a kind of automobile clutch booster.
Background technology
On the basis that clutch hydraulic pressure is handled, developed clutch booster.Because clutch operating cylinder only plays the power transmission effect, can not alleviate the treadle effort of chaufeur, especially the automobile of clutch segment diameter more than φ 325mm do not have clutch booster, and the labour intensity of chaufeur is too big.Automobile clutch booster of the prior art is made up of a control mechanism and an actuating unit.Its control mechanism is that pressure oil acts on a hydraulic piston and promotes one and diaphragm bonded assembly control plunger, is promoted an air valve and is opened the pressure gas path that leads to actuating unit by control plunger then.This control mechanism complex structure, diaphragm is fragile, and fault is more, and functional reliability is relatively poor.Its actuating unit connects a clutch release slave cylinder by a servo cylinder and constitutes, the displacement under compressed air pressure promotes of piston in the servo cylinder, working piston in its piston rod pushes the work forward cylinder, working piston promotes push rod and promotes clutch actuating shaft, pressure oil also is switched on the last top end face of working piston simultaneously, also produce certain thrust, it is lubricated that working piston also utilizes pressure oil that it is slided.Introduce pressure oil in this actuating unit, though can produce certain thrust, load is because the working piston diameter is little, and then the thrust of its pressure oil generation is little.Introduce pressure oil and then have the oil sealing problem, its oil enveloping structure is complicated, is prone to oil leakage phenomenon in the operational process, and functional reliability is relatively poor.
The utility model content
The purpose of this utility model is to provide a kind of improved automobile clutch booster, and structure is simpler, and cost is lower, and functional reliability is higher.
For achieving the above object, the utility model adopts following technical proposals:
A kind of automobile clutch booster, form by a control mechanism and an actuating unit, the structure that it is characterized in that described control mechanism is: sliding joining settled a control plunger in a control valve body, and formation oil pressure chamber is communicated with oil inlet on the control valve body between the last end face of control plunger or bottom surface and the control valve body; Control plunger middle part has and constitutes atmospheric pressure cavity between annular groove and the control valve body and be communicated with compressed air inlet on the control valve body; Constituting outlet chamber on the control plunger bottom surface between the end cap of end face and control valve body is communicated with compressed air outlet on the control valve body; The stage clip supporting is arranged between the end cap of control plunger bottom surface or last end face and control valve body; The compressed air outlet of control valve body is communicated with the compressed air inlet of servo cylinder in the actuating unit by " U " shape pipe.
Connect a hydraulic piston on the above-mentioned control plunger on the end face, constitute described oil pressure chamber on the hydraulic piston between end face and the control valve body; The seal ring that suit is arranged on the hydraulic piston; Respectively there is the seal ring of suit the control plunger top and the bottom.
There is a pneumaticpiston above-mentioned control plunger below, constitute between its upper end flange and the control valve body and open and close valve port, the epicoele of this keying valve port is that outlet chamber is communicated with described compressed air outlet, be communicated with described compressed air inlet and cavity of resorption is an atmospheric pressure cavity, pneumaticpiston is supported on the described end cap by stage clip.
The end cap of above-mentioned control valve body the oil extraction pore is arranged on the end cap, and by a disk capping, disk is connected with end cap by screw by the snap ring location and installation.
The structure of above-mentioned actuating unit is: a servo cylinder connects a clutch release slave cylinder; Settle a boosting piston in the servo cylinder, the chamber on it is connected the pressurized air of control mechanism, and the chamber under it is communicated with the air balance mouth; Boosting piston is supported on the servo cylinder inner bottom surface by a taper stage clip, the boosting piston boosting piston bar that is threaded, the boosting piston bar passes that the servo cylinder bottom surface enters in the clutch release slave cylinder and the upper end that heads on the working piston in the clutch release slave cylinder, and the lower end of working piston heads on a push rod, and push rod stretches out clutch release slave cylinder and connects clutch actuating shaft; The clutch release slave cylinder upper chamber has gas circuit to be communicated with the air balance mouth, and dust boot is arranged at the clutch release slave cylinder bottom.
The bowl ring that suit is arranged on the above-mentioned boosting piston, the oil storage alicyclic ring that boosting piston bar bottom has suit, this all grease collar is captiveed joint with servo cylinder with snap ring by packing ring; Flow ring of each suit of working piston upper and lower end parts, and two seal rings of middle part suit.
Above-mentioned control mechanism and described actuating unit are linked to be an integral structure or are separated into independent of one another structure.
The utility model has following conspicuous characteristics and advantage compared with prior art: without diaphragm, its structure is greatly simplified in the control mechanism of the present utility model, be easy to make, cost is lower, and reliable operation.Do not introduce pressure oil in the actuating unit, lubricated employing grease sheet has wherein then been eliminated prior art and the leakage of oil problem occurred, and simplified its oil enveloping structure as lubricant, and functional reliability is improved.Because pressure oil is directly introduced control mechanism in the utility model, need not the flow path actuating unit, thereby control mechanism and actuating unit can be separated into independent of one another structure, be convenient to make, install and keep in repair.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the structural representation of an embodiment of the utility model.
Fig. 3 is the structural representation of three embodiment of the utility model.
Fig. 4 is the structural representation of four embodiment of the utility model.
Fig. 5 is the structural representation of five embodiment of the utility model.
The specific embodiment
After now embodiments of the invention being described in.
Embodiment 1
Referring to Fig. 1, this automobile clutch booster, form by a control mechanism and an actuating unit, the structure of described control mechanism is: sliding joining settled a control plunger 7 in a control valve body 5, and formation oil pressure chamber 6 is communicated with oil inlet 9 on the control valve body 5 between control plunger 7 and the control valve body 5; Control plunger 5 middle parts have and constitute atmospheric pressure cavity 10 between annular groove and the control valve body 5 and be communicated with compressed air inlet 11 on the control valve body 5; Constituting outlet chamber 13 between the end cap 16 of control plunger 7 and control valve body 5 is communicated with compressed air outlet 14 on the control valve body 5; Stage clip 15 supportings are arranged between the end cap 16 of control plunger 7 and control valve body 5; The compressed air outlet 14 of control valve body 5 is communicated with the compressed air inlet 3 of servo cylinder 1 in the actuating unit by " U " shape pipe.The end cap 16 of described control valve body 5 oil extraction perforation 17 is arranged on the end cap 16, and by disk 18 cappings, disk 18 is connected with end cap 16 by screw 19 by snap ring 20 location and installation.The structure of described actuating unit is: a servo cylinder 1 connects a clutch release slave cylinder 24; Settle a boosting piston 36 in the servo cylinder 1, the chamber 2 on it is connected the pressurized air of control mechanism, and the chamber 32 under it is communicated with exhaust balance cock 28; Boosting piston 36 is supported on servo cylinder 1 inner bottom surface by a taper stage clip 33, the boosting piston 36 boosting piston bar 34 that is threaded, boosting piston bar 34 passes that servo cylinder 1 bottom surface enters in the clutch release slave cylinder 24 and the upper end that heads on the working piston 25 in the clutch release slave cylinder 24, and the lower end of working piston 25 heads on a push rod 23, and push rod 23 stretches out clutch release slave cylinder 24 and connects clutch actuating shaft 21; Clutch release slave cylinder 24 upper chamber 27 have gas circuit to be communicated with exhaust balance cock 28, and dust boot 22 is arranged at clutch release slave cylinder 24 bottoms.The bowl ring 35 that suit is arranged on the described boosting piston 36, the oil storage alicyclic ring 31 that boosting piston bar 34 bottoms have suit, this all grease collar 31 is captiveed joint with servo cylinder 1 with snap ring 29 by packing ring 30; Flow ring 26 of each suit of working piston 25 upper and lower end parts, and two seal rings 42 of middle part suit.
Referring to Fig. 2, present embodiment is same as the previously described embodiments basically, and institute's difference is: connect a hydraulic piston 38 on the described control plunger 7 on the end face, constitute described oil pressure chamber 6 on the hydraulic piston 38 between end face and the control valve body 5; The seal ring 37 that suit is arranged on the hydraulic piston 38.
Referring to Fig. 3, present embodiment basically with the embodiment two-phase mutually, institute's difference is: the protrusion mandrel of control plunger 7 lower ends is being overlapped in stage clip 15 upper ends, and the lower end is located in end cap 16 central recess.
Referring to Fig. 4, present embodiment is identical with embodiment two basically, institute's difference is: there is a pneumaticpiston 40 described control plunger 7 belows, constitute between its upper end flange 39 and the control valve body 5 and open and close valve port, the epicoele of this keying valve port is that outlet chamber 13 is communicated with described compressed air outlet 14, and cavity of resorption is the described compressed air inlet 11 of atmospheric pressure cavity 10 connections, and pneumaticpiston 40 is supported on the described end cap 16 by stage clip 41.
Referring to Fig. 5, present embodiment is identical with embodiment one basically, and institute's difference is: control plunger 7 reverses 180 ° up and down, and correspondingly with the upper end of stage clip 15 arrangements and control plunger 7, compressed air inlet 11 is above pressure oil import 9.
The utility model principle of work:
When depressing pedal of clutch, master cylinder is delivered to oil pressure pump in the oil pressure chamber 6 of control mechanism, thereby promote control plunger 7, make atmospheric pressure cavity 10 be communicated with compressed air outlet 14, then the high-pressure air source pressurized air of coming from compressed air inlet 11 compressed air discharge port 14 force feeds to actuating unit and servo cylinder 1, thereby promote boosting piston 36, and by boosting piston 34 pistons 25 that push the work forward not, and promote clutchs actuating shaft 21 through push rod 23.
Claims (7)
1. automobile clutch booster, form by a control mechanism and an actuating unit, the structure that it is characterized in that described control mechanism is: sliding joining settled a control plunger (7) in a control valve body (5), and formation oil pressure chamber (6) is communicated with oil inlet (9) on the control valve body (5) between the last end face of control plunger (7) or bottom surface and the control valve body (5); Control plunger (5) middle part has and constitutes atmospheric pressure cavity (10) between annular groove and the control valve body (5) and be communicated with compressed air inlet (11) on the control valve body (5); Constituting outlet chamber (13) on control plunger (7) bottom surface between the end cap (16) of end face and control valve body (5) is communicated with compressed air outlet (14) on the control valve body (5); Stage clip (15) supporting is arranged between the end cap (16) of control plunger (7) bottom surface or last end face and control valve body (5); The compressed air outlet (14) of control valve body (5) is communicated with the compressed air inlet (3) of servo cylinder (1) in the actuating unit by " U " shape pipe.
2. automobile clutch booster according to claim 1 is characterized in that described control plunger (7) upward connects a hydraulic piston (38) on the end face, and hydraulic piston (38) is gone up and constituted described oil pressure chamber (6) between end face and the control valve body (5); The seal ring (37) that suit is arranged on the hydraulic piston (38); Respectively there is the seal ring (8,12) of suit control plunger (7) top and the bottom.
3. automobile clutch booster according to claim 2, it is characterized in that there is a pneumaticpiston (40) described control plunger (7) below, constitute between its upper end flange (39) and the control valve body (5) and open and close valve port, the epicoele of this keying valve port is that outlet chamber (13) is communicated with described compressed air outlet (14), be communicated with described compressed air inlet (11) and cavity of resorption is an atmospheric pressure cavity (10), pneumaticpiston (40) is supported on the described end cap (16) by stage clip (41).
4. according to claim 2 or 3 described automobile clutch boosters, the end cap (16) that it is characterized in that described control valve body (5) is by snap ring (20) location and installation, oil extraction perforation (17) is arranged on the end cap (16), and by a disk (18) capping, disk (18) is connected with end cap (16) by screw (19).
5. automobile clutch booster according to claim 1 is characterized in that the structure of described actuating unit is:
A servo cylinder (1) connects a clutch release slave cylinder (24); Settle a boosting piston (36) in the servo cylinder (1), the chamber on it (2) is connected the pressurized air of control mechanism, and the chamber under it (32) is communicated with exhaust balance cock (28); Boosting piston (36) is supported on servo cylinder (1) inner bottom surface by a taper stage clip (33), boosting piston (36) the boosting piston bar (34) that is threaded, boosting piston bar (34) passes that servo cylinder (1) bottom surface enters in the clutch release slave cylinder (24) and the upper end that heads on the working piston (25) in the clutch release slave cylinder (24), and the lower end of working piston (25) heads on a push rod (23), and push rod (23) stretches out clutch release slave cylinder (24) and connects clutch actuating shaft (21); Clutch release slave cylinder (24) upper chamber (27) has gas circuit to be communicated with exhaust balance cock (28), and dust boot (22) is arranged at clutch release slave cylinder (24) bottom.
6. automobile clutch booster according to claim 5, it is characterized in that having on the described boosting piston (36) bowl ring (35) of suit, the oil storage alicyclic ring (31) that boosting piston bar (34) bottom has suit, this all grease collar (31) is captiveed joint with servo cylinder (1) with snap ring (29) by packing ring (30); Working piston (a 25) upper and lower end parts flow ring of each suit (26), and two seal rings of middle part suit (42).
7. automobile clutch booster according to claim 1 is characterized in that described control mechanism and described actuating unit are linked to be an integral structure or are separated into independent of one another structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047905 CN2928575Y (en) | 2005-12-23 | 2005-12-23 | Clutch booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047905 CN2928575Y (en) | 2005-12-23 | 2005-12-23 | Clutch booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2928575Y true CN2928575Y (en) | 2007-08-01 |
Family
ID=38306963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047905 Expired - Fee Related CN2928575Y (en) | 2005-12-23 | 2005-12-23 | Clutch booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2928575Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047973A (en) * | 2014-07-08 | 2014-09-17 | 徐月苗 | Dustproof clutch booster |
| CN104074888A (en) * | 2014-07-08 | 2014-10-01 | 徐月苗 | Positioning sleeve for clutch booster |
-
2005
- 2005-12-23 CN CN 200520047905 patent/CN2928575Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047973A (en) * | 2014-07-08 | 2014-09-17 | 徐月苗 | Dustproof clutch booster |
| CN104074888A (en) * | 2014-07-08 | 2014-10-01 | 徐月苗 | Positioning sleeve for clutch booster |
| CN104074888B (en) * | 2014-07-08 | 2016-08-24 | 徐月苗 | Positioning sleeve on clutch booster |
| CN104047973B (en) * | 2014-07-08 | 2017-02-08 | 徐月苗 | Dustproof clutch booster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |