CN203655960U - Membrane type clutch booster - Google Patents
Membrane type clutch booster Download PDFInfo
- Publication number
- CN203655960U CN203655960U CN201320772351.5U CN201320772351U CN203655960U CN 203655960 U CN203655960 U CN 203655960U CN 201320772351 U CN201320772351 U CN 201320772351U CN 203655960 U CN203655960 U CN 203655960U
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- ring
- push rod
- diaphragm
- valve core
- cavity
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model provides a membrane type clutch booster and belongs to the technical field of automobile clutches. The membrane type clutch booster solves the technical problems that in the prior art, an existing membrane type clutch booster is prone to abrasion, slow in return and complex in structure. The membrane type clutch booster comprises a front cover and a rear cover, wherein the front cover and the rear cover are detachably connected, the center of the rear cover is provided with a hydraulic cavity, the rear cover is also provided with an oil inlet and an air inlet, the oil inlet and the air inlet are communicated with the hydraulic cavity, a piston rod is arranged in the hydraulic cavity and can move in the hydraulic cavity, one end of the piston rod is connected with a membrane type boosting assembly, the other end of the piston rod is communicated with the oil inlet through the hydraulic cavity, the rear cover is further provided with an air inlet channel, a valve body assembly is further arranged in the hydraulic cavity, the valve body assembly can make the air inlet channel and the air inlet be connected or disconnected, and the membrane type boosting assembly comprises a push rod, a movable rod, a first check ring, a second check ring, a first conical spring and a membrane. The membrane type clutch booster has the advantages of being stable, reliable, quick in return, long in service life and the like.
Description
Technical field
The utility model belongs to automobile clutch technical field, relates to a kind of parts of clutch, especially a kind of diaphragm clutch booster.
Background technique
Clutch is arranged between motor and speed changer, is the total member being directly associated with motor in automotive transmission.Conventionally clutch is installed together with the flywheel group of engine crankshaft, is the parts of cut-out and transferring power between motor and automotive transmission.Automobile is from starting to the whole process of normally travelling, and driver is controlled clutch as required, motor is temporarily separated with power train or engage gradually, to cut off or to transmit the power of motor to power train output.Its effect is to make can engage gradually between motor and speed changer, thereby ensures automobile balance starting; Contacting between temporarily disconnected motor and speed changer, so that impact when gear shift and minimizing gear shift; In the time of automobile emergency brake, can play centrifugation, prevent the transmission system overloads such as speed changer, thereby play certain protective action.
Clutch is similar to switch, engages or the effect of dialysis transmission of power, and its active part of clutch mechanism can temporarily separate with secondary part, can engage gradually again, and also will likely relatively rotate in transmission process.Between the driving link of clutch and driven member, can not adopt rigidity to contact.Any type of automobile has engaging and disengaging gear, just form difference.
Existing clutch all has power-assisted assembly conventionally, and its effect is the friction plate of clutch is connected and separated by seesawing of power-assisted assembly, thereby reaches the effect of clutch.The mechanism of the main force of prior art adopts piston type conventionally, connects the connecting rod of clutch friction plate with piston rod, reaches the clutch of friction plate by seesawing of piston rod.But this piston rod easily weares and teares, cause working life not long; On the other hand, piston rod common only active force by return spring in resetting, therefore return speed can produce slowly, separates not rapidly, easily causes friction plate friction time long, causes friction plate damage; In addition, existing pressurized air booster valve door assembly design is complicated, easily damages.
Model utility content
The purpose of this utility model is for the problems referred to above, and a kind of diaphragm clutch booster is provided; The existing easy wearing and tearing of prior art, the not rapid and baroque technical problem of reset are solved.
For achieving the above object, the utility model has adopted following technical proposal: a kind of diaphragm clutch booster, comprise the protecgulum and the bonnet that removably connect, described bonnet center has hydraulic pressure cavity, on bonnet, be also provided with the filler opening and the suction port that are communicated with hydraulic pressure cavity, in hydraulic pressure cavity, there is the piston rod that can move in hydraulic pressure cavity, described piston rod one end is connected with diaphragm type power-assisted assembly, the other end is communicated with filler opening by hydraulic pressure cavity, described bonnet is also provided with gas-entered passageway, in described hydraulic pressure cavity, be also provided with valve component, described valve component can be communicated with or block gas-entered passageway and suction port, described diaphragm type power-assisted assembly comprises the push rod being located in protecgulum, the motion bar being fixedly connected with piston rod, the first back-up ring being fixedly connected with protecgulum and the second back-up ring being fixedly connected with push rod, between the first back-up ring and the second back-up ring, be provided with first volute spring, the outer wall with the diaphragm that elasticity can deformation is close in described push rod bottom, described diaphragm inwall is close to motion bar.
In above-mentioned diaphragm clutch booster, described the second back-up ring center has the projection that is round platform taper, on excircle, there is annular baffle ring, between projection and baffle ring, form receiving cavity annular and depression, one end of described the first volute spring is placed in receiving cavity, described diaphragm center has the boss of round platform taper, and the outer wall of boss is close in push rod bottom, and motion bar is close to the inwall of boss.
In above-mentioned diaphragm clutch booster, between described the second back-up ring and diaphragm, be also provided with a power transmission circle, described power transmission circle and push rod clamping, the external diameter of power transmission circle is greater than the external diameter of the second back-up ring and boss, described push rod bottom has the push rod back-up ring of ring-type, power transmission circle be nested in push rod and with the clamping of push rod back-up ring.
In above-mentioned diaphragm clutch booster, the projection of described the second back-up ring has internal thread, the push rod back-up ring of described push rod has the outside thread matching with protruding internal thread, projection is spirally connected with push rod back-up ring, and that the second back-up ring and push rod are spirally connected is fixing, described motion bar front end expands formation expansion-head, described expansion-head is close to diaphragm inwall, and expansion-head external diameter is greater than the diameter of push rod, and the top surface of described expansion-head is smooth cambered surface.
In above-mentioned diaphragm clutch booster, described valve component comprises the front valve core being located in hydraulic pressure cavity, the valve plate being fixedly connected with bonnet, described valve plate center has suction port, between described valve plate and bonnet, be provided with positioning ring, between positioning ring and valve plate, be arranged with seal ring, between described seal ring and front valve core, be provided with back valve core, between back valve core and seal ring, be provided with the second volute spring, described front valve core can promote that back valve core moves and in the time that back valve core moves back valve core separate and make suction port and gas-entered passageway to be communicated with seal ring.
In above-mentioned diaphragm clutch booster, described back valve core comprises the front sealing seat and the rear sealing seat that are truncated cone, front sealing seat is connected with valve core link rod with rear sealing seat, described front valve core has the spool flange of ring-type, described spool flange is fastened on the oral area of gas-entered passageway, between spool flange and seal ring, be provided with cylindrical spring, described front valve core is also provided with spool cavity, and front sealing seat is located in spool cavity inner wall in spool cavity and in the time that front valve core moves and contacts with front sealing seat.
In above-mentioned diaphragm clutch booster, the external diameter of described spool flange is greater than the internal diameter of positioning ring, it is diameter that the thickness of spool flange is less than gas-entered passageway, and the diameter of the upper round platform of described rear sealing seat is less than the internal diameter that the internal diameter of seal ring and the diameter of lower round platform are greater than seal ring.
In above-mentioned diaphragm clutch booster, described bonnet is also provided with access opening, and described access opening is communicated with spool cavity, is also provided with a maintenance nut removably connecting with access opening on access opening.
In above-mentioned diaphragm clutch booster, be covered with the air cavity of ring-type after described, air cavity one end is communicated with gas-entered passageway, and the other end is communicated with the cavity between diaphragm and bonnet.
Compared with prior art, the utility model has the advantage of: diaphragm type power-assisted assembly and valve component are reasonable in design, simple in structure, can reduce the pattern of piston, make the separation of clutch and the process of combination steadily with accurate, and there is reset fast, the advantage of long service life.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model provides;
Fig. 2 is the structural representation of the diaphragm type power-assisted assembly that provides of the utility model;
Fig. 3 is the A place enlarged view in Fig. 1.
In figure, bonnet 100, hydraulic pressure cavity 101, filler opening 102, suction port 103, piston rod 104, gas-entered passageway 105, access opening 106, maintenance nut 107, air cavity 108, protecgulum 200, push rod 20101, push rod back-up ring 2011, diaphragm type power-assisted assembly 3, motion bar 31, the first back-up ring 32, the second back-up ring 33, the first volute spring 344, diaphragm 35, power transmission circle 36, expansion-head 311, projection 331, baffle ring 332, receiving cavity 333, boss 351, valve component 4, front valve core 41, valve plate 42, positioning ring 43, seal ring 44, back valve core 45, the second volute spring 46, cylindrical spring 47, spool flange 411, spool cavity 412, front sealing seat 451, rear sealing seat 452, valve core link rod 453.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 3, a kind of diaphragm clutch booster, comprise the protecgulum 200 and the bonnet 100 that removably connect, described bonnet 100 centers have hydraulic pressure cavity 101, on bonnet 100, be also provided with the filler opening 102 and the suction port 103 that are communicated with hydraulic pressure cavity 101, in hydraulic pressure cavity 101, having can be at the piston rod 104 of hydraulic pressure cavity 101 interior movements, described piston rod 104 one end are connected with diaphragm type power-assisted assembly 3, the other end is communicated with filler opening 102 by hydraulic pressure cavity 101, described bonnet 100 is also provided with gas-entered passageway 105, in described hydraulic pressure cavity 101, be also provided with valve component 4, described valve component 4 can be communicated with or block gas-entered passageway 105 and suction port 103, described diaphragm type power-assisted assembly 3 comprises the push rod 20101 being located in protecgulum 200, the motion bar 31 being fixedly connected with piston rod 104, the first back-up ring 32 being fixedly connected with protecgulum 200 and the second back-up ring 33 being fixedly connected with push rod 20101, between the first back-up ring 32 and the second back-up ring 33, be provided with the one the first volute spring 344, the outer wall with the diaphragm 35 that elasticity can deformation is close in described push rod 20101 bottoms, described diaphragm 35 inwalls are close to motion bar 31.
Described the second back-up ring 33 centers have the projection 331 that is round platform taper, on excircle, there is annular baffle ring 332, between projection 331 and baffle ring 332, form receiving cavity 333 annular and depression, one end of described the one the first volute springs 344 is placed in receiving cavity 333, described diaphragm 35 centers have the boss 351 of round platform taper, the outer wall of boss 351 is close in push rod 20101 bottoms, and motion bar 31 is close to the inwall of boss 351.
Between described the second back-up ring 33 and diaphragm 35, be also provided with a power transmission circle 36, described power transmission circle 36 and push rod 20101 clampings, the external diameter of power transmission circle 36 is greater than the external diameter of the second back-up ring 33 and boss 351, described push rod 20101 bottoms have the push rod back-up ring 2011 of ring-type, power transmission circle 36 be nested in push rod 20101 and with 2011 clampings of push rod back-up ring.
The projection 331 of described the second back-up ring 33 has internal thread, the push rod back-up ring 2011 of described push rod 20101 has the outside thread matching with the internal thread of projection 331, projection 331 is spirally connected and makes the second back-up ring 33 be spirally connected fixing with push rod 20101 with push rod back-up ring 2011, described motion bar 31 front ends expand and form expansion-head 311, described expansion-head 311 is close to diaphragm 35 inwalls, expansion-head 311 external diameters are greater than the diameter of push rod 20101, and the top surface of described expansion-head 311 is smooth cambered surface.
Described valve component 4 comprises the front valve core 41 being located in hydraulic pressure cavity 101, the valve plate 42 being fixedly connected with bonnet 100, described valve plate 42 centers have suction port 103, between described valve plate 42 and bonnet 100, be provided with positioning ring 43, between positioning ring 43 and valve plate 42, be arranged with seal ring 44, between described seal ring 44 and front valve core 41, be provided with back valve core 45, between back valve core 45 and seal ring 44, be provided with the second volute spring 46, described front valve core 41 can promote that back valve core 45 moves and in the time that back valve core 45 moves back valve core 45 separate and make suction port 103 and gas-entered passageway 105 to be communicated with seal ring 44.
Described back valve core 45 comprises the front sealing seat 451 and the rear sealing seat 452 that are truncated cone, front sealing seat 451 is connected with rear sealing seat 452 use valve core link rods 453, described front valve core 41 has the spool flange 411 of ring-type, described spool flange 411 is fastened on the oral area of gas-entered passageway 105, between spool flange 411 and seal ring 44, be provided with cylindrical spring 47, described front valve core 41 is also provided with spool cavity 412, and front sealing seat 451 is located in spool cavity 412 inwalls in spool cavity 412 and in the time that front valve core 41 moves and contacts with front sealing seat 451.
The external diameter of described spool flange 411 is greater than the internal diameter of positioning ring 43, it is diameters that the thickness of spool flange 411 is less than gas-entered passageway 105, and the diameter of the upper round platform of described rear sealing seat 452 is less than the internal diameter that the internal diameter of seal ring 44 and the diameter of lower round platform are greater than seal ring 44.
Described bonnet 100 is also provided with access opening 106, and described access opening 106 is communicated with spool cavity 412, is also provided with a maintenance nut 107 removably connecting with access opening 106 on access opening 106.
Described bonnet 100 is provided with the air cavity 108 of ring-type, and air cavity 108 one end are communicated with gas-entered passageway 105, and the other end is communicated with the cavity between diaphragm 35 and bonnet 100.
Working procedure of the present utility model is as follows:
Hydraulic oil enters into hydraulic pressure cavity 101 from filler opening 102, and promote forward piston rod 104 and move, thereby thereby piston rod 104 further promotes motion bar 31 to be moved forward and makes diaphragm 35 produce deformation and thrust is passed to push rod 20101 to make clutch separation; On the other hand, hydraulic oil promotes front valve core 41 and moves backward, because front valve core 41 has spool cavity 412 and its inwall can contact with back valve core 45, therefore, in the time that front valve core 41 moves, can promote back valve core 45 backward and move backward, now, rear sealing seat 452 departs from seal ring 44, thereby pressurized air enters into gas channel 105 step of going forward side by side by suction port 103 and enters into air cavity 108 diaphragm 35 is produced to thrust, forms clutch power-assisted.
In the time that hydraulic oil stops entering, hydraulic pressure cavity 101 loses pressure, diaphragm 5 is moved by the elastic acting force of the one the first volute springs 344 backward, thereby promoting piston rod 104 moves backward, front valve core 41 moves forward under the elastic acting force of cylindrical spring 47, back valve core 45 also moves forward under the elastic acting force of the second volute spring 46, rear sealing seat 452 and seal ring 44 combinations, and pressurized air stops entering.
Receiving cavity 333 plays a positioning action to the first volute spring 34, thereby ensures that the first volute spring 34 can not be subjected to displacement variation in compression repeatedly with in flicking process, has ensured the stability of whole power-assisted assembly.Power transmission circle 36 plays a power transmission and acts on uniformly,, in the time that motion bar 31 produces active force, by the structural design of power transmission circle 36, active force is passed on the second back-up ring 33 and push rod 201 uniformly.
In the time that motion bar 31 travels forward, the cambered surface of expansion-head 311 can be close to the inwall of the first volute spring 34, thereby the active force of motion bar 31 is delivered on the first volute spring 34 uniformly, further promotes push rod 201 and moves, and whole process is steadily reliable.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used bonnet 100 herein, hydraulic pressure cavity 101, filler opening 102, suction port 103, piston rod 104, gas-entered passageway 105, access opening 106, maintenance nut 107, air cavity 108, protecgulum 200, push rod 20101, push rod back-up ring 2011, diaphragm type power-assisted assembly 3, motion bar 31, the first back-up ring 32, the second back-up ring 33, the the one the first volute springs 344, diaphragm 35, power transmission circle 36, expansion-head 311, projection 331, baffle ring 332, receiving cavity 333, boss 351, valve component 4, front valve core 41, valve plate 42, positioning ring 43, seal ring 44, back valve core 45, the second volute spring 46, cylindrical spring 47, spool flange 411, front sealing seat 451, rear sealing seat 452, valve core link rod 453 terms such as grade, but do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (9)
1. a diaphragm clutch booster, comprise the protecgulum (200) and the bonnet (100) that removably connect, described bonnet (100) center has hydraulic pressure cavity (101), on bonnet (100), be also provided with the filler opening (102) and the suction port (103) that are communicated with hydraulic pressure cavity (101), in hydraulic pressure cavity (101), there is the piston rod (104) that can move in hydraulic pressure cavity (101), it is characterized in that, described piston rod (104) one end is connected with diaphragm type power-assisted assembly (3), the other end is communicated with filler opening (102) by hydraulic pressure cavity (101), described bonnet (100) is also provided with gas-entered passageway (105), in described hydraulic pressure cavity (101), be also provided with valve component (4), described valve component (4) can be communicated with or block gas-entered passageway (105) and suction port (103), described diaphragm type power-assisted assembly (3) comprises the push rod (201) being located in protecgulum (200), the motion bar (31) being fixedly connected with piston rod (104), the first back-up ring (32) being fixedly connected with protecgulum (200) and the second back-up ring (33) being fixedly connected with push rod (201), between the first back-up ring (32) and the second back-up ring (33), be provided with first volute spring (34), the outer wall with the diaphragm (35) that elasticity can deformation is close in described push rod (201) bottom, described diaphragm (35) inwall is close to motion bar (31).
2. diaphragm clutch booster according to claim 1, it is characterized in that, described the second back-up ring (33) center has the projection (331) that is round platform taper, on excircle, there is annular baffle ring (332), between projection (331) and baffle ring (332), form receiving cavity (333) annular and depression, one end of described the first volute spring (34) is placed in receiving cavity (333), described diaphragm (35) center has the boss (351) of round platform taper, the outer wall of boss (351) is close in push rod (201) bottom, motion bar (31) is close to the inwall of boss (351).
3. diaphragm clutch booster according to claim 2, it is characterized in that, between described the second back-up ring (33) and diaphragm (35), be also provided with a power transmission circle (36), described power transmission circle (36) and push rod (201) clamping, the external diameter of power transmission circle (36) is greater than the external diameter of the second back-up ring (33) and boss (351), described push rod (201) bottom has the push rod back-up ring (2011) of ring-type, power transmission circle (36) be nested in push rod (201) and with push rod back-up ring (2011) clamping.
4. diaphragm clutch booster according to claim 3, it is characterized in that, the projection (331) of described the second back-up ring (33) has internal thread, the push rod back-up ring (2011) of described push rod (201) has the outside thread matching with the internal thread of projection (331), projection (331) is spirally connected and makes the second back-up ring (33) and push rod (201) be spirally connected fixing with push rod back-up ring (2011), described motion bar (31) front end expands and forms expansion-head (311), described expansion-head (311) is close to diaphragm (35) inwall, expansion-head (311) external diameter is greater than the diameter of push rod (201), the top surface of described expansion-head (311) is smooth cambered surface.
5. diaphragm clutch booster according to claim 1, it is characterized in that, described valve component (4) comprises the front valve core (41) being located in hydraulic pressure cavity (101), the valve plate (42) being fixedly connected with bonnet (100), described valve plate (42) center has suction port (103), between described valve plate (42) and bonnet (100), be provided with positioning ring (43), between positioning ring (43) and valve plate (42), be arranged with seal ring (44), between described seal ring (44) and front valve core (41), be provided with back valve core (45), between back valve core (45) and seal ring (44), be provided with the second volute spring (46), described front valve core (41) can promote back valve core (45) mobile and in the time that back valve core (45) is mobile back valve core (45) separate and make suction port (103) and gas-entered passageway (105) connection with seal ring (44).
6. diaphragm clutch booster according to claim 5, it is characterized in that, described back valve core (45) comprises the front sealing seat (451) and the rear sealing seat (452) that are truncated cone, front sealing seat (451) is connected with valve core link rod (453) with rear sealing seat (452), described front valve core (41) has the spool flange (411) of ring-type, described spool flange (411) is fastened on the oral area of gas-entered passageway (105), between spool flange (411) and seal ring (44), be provided with cylindrical spring (47), described front valve core (41) is also provided with spool cavity (412), front sealing seat (451) is located in spool cavity (412) inwall in spool cavity (412) and in the time that front valve core (41) is mobile and contacts with front sealing seat (451).
7. diaphragm clutch booster according to claim 6, it is characterized in that, the external diameter of described spool flange (411) is greater than the internal diameter of positioning ring (43), the thickness of spool flange (411) is less than gas-entered passageway (105) diameter, and the diameter of the upper round platform of described rear sealing seat (452) is less than the internal diameter that the internal diameter of seal ring (44) and the diameter of lower round platform are greater than seal ring (44).
8. according to the diaphragm clutch booster described in claim 6 or 7, it is characterized in that, described bonnet (100) is also provided with access opening (106), described access opening (106) is communicated with spool cavity (412), is also provided with a maintenance nut (107) removably connecting with access opening (106) on access opening (106).
9. according to the diaphragm clutch booster described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7, it is characterized in that, described bonnet (100) is provided with the air cavity (108) of ring-type, air cavity (108) one end is communicated with gas-entered passageway (105), and the other end is communicated with the cavity between diaphragm (35) and bonnet (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772351.5U CN203655960U (en) | 2013-11-28 | 2013-11-28 | Membrane type clutch booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772351.5U CN203655960U (en) | 2013-11-28 | 2013-11-28 | Membrane type clutch booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655960U true CN203655960U (en) | 2014-06-18 |
Family
ID=50922351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320772351.5U Expired - Fee Related CN203655960U (en) | 2013-11-28 | 2013-11-28 | Membrane type clutch booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350774A (en) * | 2018-12-20 | 2020-06-30 | 北汽福田汽车股份有限公司 | Piston cylinder and vehicle |
-
2013
- 2013-11-28 CN CN201320772351.5U patent/CN203655960U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350774A (en) * | 2018-12-20 | 2020-06-30 | 北汽福田汽车股份有限公司 | Piston cylinder and vehicle |
| CN111350774B (en) * | 2018-12-20 | 2021-06-18 | 北汽福田汽车股份有限公司 | Piston cylinder and vehicle |
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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 |
Granted publication date: 20140618 Termination date: 20141128 |
|
| EXPY | Termination of patent right or utility model |