CN2288868Y

CN2288868Y - Automatic synchronous clutch speed variator for car

Info

Publication number: CN2288868Y
Application number: CN 96239796
Authority: CN
Inventors: 王明耀
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-27
Filing date: 1996-11-27
Publication date: 1998-08-26
Anticipated expiration: 2006-11-27

Abstract

The utility model relates to an automatic synchronous speed changer for a clutch of an automobile, which is formed by that a speed difference sensor which is connected with a clutch cover is arranged on an input shaft of a speed changer; the speed difference sensor is connected with an adding and a reducing throttle electromagnets via a controlling circuit; a servo switch which is arranged between a gear shifting arm and a servo arm is connected with an electric valve, of a power-assisting device, which controls the separation of the clutch; the servo controlling end of the power-assisting device is connected with a clutch pedal via a flexible shaft. The utility model has the advantages of simple structure and simple operation; the utility model can automatically complete the entire process of separation, synchronization and combination by that a speed changing rod is operated in the process of gear shifting in the running of the automobile, and thus the utility model can reduce the impact load of a drive system in the process of the gear shifting.

Description

Automobile syn clutch speed changer

The utility model relates to a kind of automobile syn clutch speed changer, it can be in running car only operate during gear shift shifter bar just can finish automatically separation, synchronously, the overall process of combination.

At present, the known gear transmission that links by power-transfer clutch and automotive engine has advantages such as driving efficiency height, reliable operation, low cost of manufacture, yet, need operated clutch, throttle and shifter bar simultaneously under steam during gear shift, very inconvenient, but also a problem that exists is poor owing to speed occurring between engine crankshaft when gear shift and the input shaft, and this fast missionary society brings impact in the moment of both combinations to driving system, causes the infringement to driving system.Though existing fluid power change is turned round automatic transmission with hydraulic torque converter and can be addressed the above problem, driving efficiency is low, manufacturing cost is high, thereby is not widely used.

The purpose of this utility model provides a kind of automobile syn clutch speed changer, and it is not only simple in structure, cost is low, the control step in the time of can simplifying gear shift, and the existing impact of driving system can alleviate gear shift greatly the time.

The purpose of this utility model is realized by following technical scheme, the synchronizing sleeve that suit one and clutch cover back plate link on input shaft, the elastic-friction contact ring is housed in the synchronizing sleeve, and on input shaft, be equipped with and add, the deceleration contact, add, the deceleration contact joins with open out electromagnet and the electric valve of energy brake (or subtracting the throttle electromagnet) respectively by control circuit, be contained between gear shift arm on the shift shaft and the idle rod and be provided with the follow-up switch that links to each other with the electric valve power supply of control circuit and servo-unit, the positioning plate of control gear shift arm stroke is housed on mission case, the servo-unit of cut-off clutch links to each other with electric valve, and servo-unit follow-up control end links by flexible axle and pedal of clutch.The elastic-friction contact ring is by synchronizing sleeve and clutch cover back plate and driving engine is synchronous or the friction running, and the boss of elastic-friction contact ring is driven and input shaft run-in synchronism by it between the acceleration, deceleration contact simultaneously, constitutes a differential speed sensor.When needing gear shift in the running car, stir swing relative of the coupled gear shift arm of shifter bar with idle rod, follow-up switch is connected electric valve power supply of servo-unit and control circuit power supply, the servo-unit cut-off clutch, when gear shift put in place, the gear shift arm was under the effect of positioning plate, follow-up switch disconnects, this moment, acceleration or deceleration contact then contacted with the elastic-friction contact ring if the rotating speed of driving engine and input shaft is asynchronous, continued electric valve of conducting servo-unit and control circuit power supply.Control circuit removes to control the open out electromagnet or the electric valve of energy brake (or subtracting the throttle electromagnet) quickens driving engine or deceleration, reach synchronous until driving engine and input shaft, this moment elastic-friction contact ring and acceleration or deceleration contact open, control circuit quits work, the automatic combination of power-transfer clutch, promptly finish automatic separation, synchronously, the overall process of combination.

Owing to adopt such scheme, the utlity model has following good effect.Combination under synchronous regime when one, car gear shifting, the impact that has alleviated driving system greatly can make the operation of automobile more steady, and prolongs the car opertion life-span; Two, only need operate shifter bar during gear shift and just can reach automatic separation, syn, combination automatically, it has simplified original control step, and giving drives a car has brought convenience; Three, the utility model is the improvement of carrying out under the original structure unmodified situation keeping, and simple in structure, technological requirement is not high.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the constructional drawing of an embodiment of the utility model.

Fig. 2 is the A-A cutaway view among Fig. 1, i.e. the structural diagrams of elastic-friction contact ring and acceleration, deceleration contact.

Fig. 3 is the control circuit figure of the utility model embodiment.

1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20. ( ) 21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.40.41.42.43.44.45.46.47.48.49.50.51.52.53.54.55.56.57.58.

Synchronizing sleeve (13) is housed on the input shaft in Fig. 1 (58), synchronizing sleeve (13) links by internal gear (12) and clutch cover back plate (53), in synchronizing sleeve (13) one sides, elastic-friction contact ring (14) is housed, elastic-friction contact ring (14) is provided with the contact of outside protrusion, on input shaft, be pressed with simultaneously cover (57), adding of mutually insulated be housed on the cover (57), deceleration contact (16), (54), copper ring (56), (55), add, deceleration contact (16), (54) respectively with copper ring (56), (55) connect copper ring (56) with lead, (55) go up the carbon brush of adorning (17) and control circuit repeat circuit (8) by input shaft bearing cap shim (15), (9), (10), (11) control end is connected respectively.Outside input shaft bearing cap shim (15), be set with release thrust bearing seat (18), disengaging shaft bearing (18) links with an end of shift fork (52), the other end of shift fork (52) links with push rod (38) by pull bar (49) and lever (36), and take back a spring (48), push rod (38) connects firmly mutually with booster piston (45), back-up ring (46) is housed in the piston (45), spring (42), balance spring (40), spool (37), pressurized air in the piston (45) communicates with admission port (29) through air inlet pipe (35), link by flexible axle (3) and pedal of clutch (4) with the ejector sleeve (47) of spool (37) coaxial line, there are the shared pipes of aperture intake and exhaust (50) at ejector sleeve (47) middle part, the normal opening (33) of electric valve, freeing pipe (51) communicates with open to atmosphere exhausr port (44).At the idle rod (24) that connects firmly on the shift shaft (22) and be sleeved on and be provided with follow-up switch (25) and return steel ball (27), spring (28) between the gear shift arm (23) on the shift shaft (22), mission case is provided with the positioning plate (26) of control gear shift arm (23) stroke.Gear shift arm (23) drives the swing tip side and the electric valve of servo-unit (32) of the control end that makes follow-up switch (25) and relay (6), (7), (9), (10) of idle rod (24) and is conducted during gear shift.After gear shift put in place, positioning plate (26) restriction gear shift arm (23) can not continue swing, and spring (28) pushes on the steel ball (27) and moves, and idle rod (24) is got back to and the corresponding midway location of gear shift arm (23), and follow-up switch this moment (25) is in normally open.(car of no energy brake removes relay (6) and switch (5) to control circuit by normally closed relay (6) in the present embodiment; The automobile-used solenoid control vacuum separation power-transfer clutch of non-compressed air) and normally opened relay (7), (8), (9), (10), (11) combine, the control end of its repeat circuit (8), (9) communicates with deceleration contact (54), the tip side of relay (8) and the electric valve of energy brake (20) are connected, and the control end of the tip side of relay (9) and relay (6), (7) and the electric valve of servo-unit (32) are connected and are used for the deceleration synchronization clutch for clutch control; The control end of relay (10), (11) links to each other with acceleration contact (16) through engine oil pressure master cock (19), the tip side of relay (10) is connected with the control end and the electric valve of servo-unit (32) of relay (6), (7), and the tip side of relay (11) links to each other with open out electromagnet (21) and is used for the acceleration synchronization clutch for clutch control.Power supply divides through the contact of exhaust brake switch (5) relay (6) with energy brake electric valve (20) link to each other at three the tunnel: the one tunnel after hand brake switch (1) and pedal of clutch master cock (2); Another road links to each other with tip side with the control end of relay (8), (9), (10), (11) through the contact of relay (7); Third Road links to each other with the electric valve of servo-unit (32) through the tip side of the control end of follow-up switch (25) and relay (6), (7), relay (9), (10).The effect of relay (7) is the chance of only giving whole device acceleration synchronization, deceleration synchronization or not acceleration, deceleration and combination in each gear shift, in order to avoid misoperation occurs.

The work operational process of the foregoing description is: when vehicle starting, let slip the clutch (4), pedal of clutch master cock (2) power cut-off, promote ejector sleeve (47) by flexible axle (3) simultaneously, back-up ring (46) moves to right, compression spring (42), balance spring (40) pushes spool (37), ejector sleeve (47) is closed normal opening (41), back down normally closed port (39), pressurized air in the piston (45) enters cylinder (43) through normally closed port (39), promote piston (45) and move to right, and by push rod (38), lever (36), pull bar (49), shift fork (52), disengaging shaft bearing (18) disengages the clutch.After extension files, unclamp hand brake and make hand brake switch (1) closure, slow release the clutch pedal (4), spring (42) promotes back-up ring (463, ejector sleeve (47), flexible axle (3) moves to left, spool (37) is closed normally closed port (39), open normal opening (41), when ejector sleeve (47) is motionless, piston (45) moves to left under the effect of pull back spring (48), spool (37) is closed normal opening (41) again with ejector sleeve (47), along with unclamping of pedal of clutch (4), piston (45) servo-actuated and is moved to left, pressurized air in the cylinder (43) is through ejector sleeve (47), the shared pipe of intake and exhaust (50), normal opening (33), freeing pipe (51), exhausr port (44) exhaust to atmosphere, the power-transfer clutch combination, automobile begins to travel.In automotive operation when the needs gear shift, stir the shifter bar that links with gear shift arm (23), gear shift arm (23) drives idle rod (24) makes steel ball (27) overcome that spring (28) elastic force moves down and swing relatively, follow-up switch (25) cutin relay (6), the power supply of the electric valve of control end (7) and servo-unit (32), the iron core (31) of electric valve this moment (32) moves down opens normally closed port (30), close normal opening (33), pressurized air is through admission port (29), the shared pipe of intake and exhaust (50), ejector sleeve (47) enters cylinder (43), promote piston (45) and move to right disengaging of clutch.The contact open of control circuit repeat circuit (6) makes exhaust brake switch (5) inoperative, the closing of contact of relay (7) is given relay (8), (9), (10), (11) power supply, after gear shift puts in place, positioning plate (26) restriction gear shift arm (23) can not continue swing, under the effect of steel ball (27), spring (28), idle rod (24) is got back to and the corresponding midway location of gear shift arm (23), and follow-up switch (25) disconnects.This moment is if engine speed is higher than input shaft (58), then elastic-friction contact ring (14) contacts with deceleration contact (54) and rotates at synchronizing sleeve (13) internal friction, through copper ring (55), carbon brush (17) is cutin relay (8) simultaneously, (9) control end, relay (9) continues to keep electric valve of servo-unit (32) and relay (6), (7) "on" position, make power-transfer clutch continue to separate, the electric valve of relay (8) conducting energy brake (20) makes drop engine speed, when the identical moment of rotating speed that drops to input shaft (58), elastic-friction contact ring (14) separates with deceleration contact (54), while relay (8), (9) contact open, relay (6), (7) outage reduction, after the electric valve of servo-unit (32) outage, iron core (31) moves under the effect of spring (34), close normally closed port (30), open normal opening (33), pressurized air in the cylinder (43) is through ejector sleeve (47), the shared pipe of intake and exhaust (50), normal opening (33), freeing pipe (51), from exhausr port (44) exhaust to atmosphere, piston (45) moves to left, the process of deceleration synchronization combination is finished in power-transfer clutch combination under synchronous state; If engine speed is lower than input shaft (58), then elastic-friction contact ring (14) contacts with acceleration contact (16), and rotate at synchronizing sleeve (13) internal friction, through copper ring (56), carbon brush (17) is cutin relay (10) simultaneously, (11) control end, relay (10) continues to keep electric valve of servo-unit (32) and relay (6), (7) "on" position, make power-transfer clutch continue to separate, relay (11) conducting open out electromagnet (21) quickens driving engine, through other process the same with moderating process, make power-transfer clutch combination under synchronous state, finish the process of acceleration synchronization combination; If engine speed and input shaft (58) are synchronous, acceleration, deceleration contact (16), (54) all do not contact with elastic-friction ring (14), electric valve of energy brake (20) and open out electromagnet (21) are not worked, relay (6), (7), the electric valve of servo-unit (32) reset along with the disconnection of follow-up switch (25), and power-transfer clutch i.e. combination under synchronous regime.When automobile slide, if driving engine is in flameout state, acceleration device does not have the effect that improves engine speed, this moment engine oil pressure master cock (19) block system relay (10), (11) the loop, make their not conductings, then the electric valve of servo-unit (32) along with the disconnection of follow-up switch (25) return, power-transfer clutch combination under asynchronous state, driving engine drags startup automatically.

Claims

1. automobile syn clutch speed changer, include input shaft (58), the power-transfer clutch that links with input shaft and engine crankshaft, gear shift arm (23) and pedal of clutch (4), it is characterized in that on input shaft (58), being set with a synchronizing sleeve (13) that links with clutch cover back plate (53), be equipped with elastic-friction contact ring (14) in the synchronizing sleeve (13), and corresponding configuration adds on input shaft (58), deceleration contact (16), (54), add, deceleration contact (16), (54) be connected with the electric valve of energy brake (20) with open out electromagnet (21) respectively by control circuit, on gear shift arm (23), be provided with the follow-up switch (25) that links with control circuit, the servo-unit of power-transfer clutch and electric valve (32) link, and the follow-up control end of servo-unit links by flexible axle (3) and pedal of clutch (4).

2. by the described automobile syn of claim 1 clutch speed changer, it is characterized in that elastic-friction contact ring (14) is provided with the contact of outside protrusion, simultaneously in acceleration, deceleration contact (16), (54) that input shaft (58) is correspondingly installed mutually insulated, acceleration, deceleration contact (16), (54) are conducted with copper ring (56), (55) respectively, and copper ring (56), (55) link to each other with control circuit by carbon brush (17).

3. by claim 1 or 2 described automobile syn clutch speed changers, it is characterized in that servo-unit and electric valve (32) link, servo-unit is by ejector sleeve (47), piston (43), the balance spring (40) of the pull back spring (42) of back-up ring (46) phase configuration and spool (37) phase configuration constitutes, pull back spring (42), back-up ring (46), spool (37), balance spring (40) is sleeved in the hollow piston bar of piston (43), and communicate with admission port (29) by air inlet pipe (35), with the ejector sleeve (47) of spool (37) coaxial line by the shared pipe of intake and exhaust (50), electric valve (32), freeing pipe (51) communicates with exhausr port (44).

4. by the described automobile syn of claim 3 clutch speed changer, it is characterized in that the follow-up control end of the ejector sleeve (47) of servo-unit links by flexible axle (3) and pedal of clutch (4).

5. by claim 1 or 2 described automobile syn clutch speed changers, it is characterized in that being fixedly connected with on the shift shaft (22) idle rod (24) and be set with gear shift arm (23), and be equipped with return steel ball (27), between gear shift arm (23) and idle rod (24), be provided with follow-up switch (25), on the mission case of the gear shift arm (23) and idle rod (24) back lower place, be provided with positioning plate (26).

6. by claim 1 or 2 described automobile syn clutch speed changers, it is characterized in that control circuit is combined by normally closed relay (6) and normally opened relay (7), (8), (9), (10), (11), the control end of its repeat circuit (8), (9) links to each other with deceleration contact (54), and tip side then is connected with exhaust brake valve (20) and the electric valve of servo-unit (32), relay (6), (7) respectively; The control end of relay (10), (11) links to each other with acceleration contact (16) through engine oil pressure master cock (19), and tip side then is connected with open out electromagnet (21) and the electric valve of servo-unit (32), relay (6), (7) respectively.

7. by the described automobile syn of claim 6 clutch speed changer, it is characterized in that power supply handles control of braking switch (1) and pedal of clutch master cock (2) back branch three tunnel: one tunnel and link to each other with the electric valve of energy brake (20) through the contact of exhaust brake switch (5) relay (6); Another road links to each other with tip side with the control end of relay (8), (9), (10), (11) through the contact of relay (7); Third Road links to each other with the electric valve of servo-unit (32) through the tip side of the control end of follow-up switch (25) and relay (6), (7), relay (9), (10).