CN202073954U - Electrorheological automatic clutch for automobile - Google Patents

Abstract

The utility model discloses an electrorheological automatic clutch for automobiles, which comprises a right end cover, a left end cover, a central shaft, a driving piece, a driven piece, a left insulating sleeve, a right insulating sleeve, a sleeve and an electrorheological liquid. The sleeve set on the active piece and the No. 1 spacer is installed between the right end cover and the left end cover, and the No. 1 spacer is placed between the two adjacent active pieces. The No. 1 insulating sheet is installed on the through hole of the spacer of the active piece. , use bolts to fix the right end cover, the active piece placed alternately with the No. 1 spacer and the left end cover, the central shaft and the driven piece are connected by splines, and the No. 2 spacer is placed between the two adjacent driven pieces. No. 2 insulating sheets are installed around the moving piece, and the driven piece and the driving piece are alternately arranged. The central shaft is installed on the left end cover and the right end cover through the left insulating sleeve, the right insulating sleeve, the No. 2 bearing and the No. 1 bearing. The small-diameter shaft sleeve of the shaft is provided with a conductive ring, and the connecting plate is fixedly installed on the left end cover.

Description

Electrorheological automatic clutch for automobile

technical field

The utility model relates to a clutch belonging to the technical field of automobile transmission, more specifically, the utility model relates to an electrorheological automatic clutch for automobiles.

Background technique

Clutch is the part that connects the engine and gearbox in the car transmission system. Most of the clutches used in cars are friction clutches, which use the engagement and separation between the driving disc and the driven disc to transmit and interrupt power. This kind of clutch has some disadvantages. For example, the pretightening force of the pressure plate gradually decreases with the wear of the friction plate during long-term use, so that the torque that the clutch can transmit gradually decreases, and finally makes it slip and fail; During the shifting process, the separation and engagement process of the friction clutch takes a long time and is not smooth, which will cause shocks at starting and shifting, and affect driving comfort and the life of transmission components.

Electrorheological Fluids (Electrorheological Fluids, referred to as ER) is a suspension under normal conditions, which can undergo liquid-solid transition instantaneously under the action of an electric field. When the applied electric field strength is much lower than a certain critical value, the electrorheological fluid is liquid; when the electric field strength is much higher than this critical value, it becomes solid; near the critical value of the electric field strength, the viscosity of this suspension The hysteresis increases with increasing electric field strength. Using this characteristic of electrorheological fluid, a new type of clutch can be studied, that is, by changing the magnitude of the electric field strength to change its viscosity, thereby changing the magnitude of the transmitted torque, and realizing power transmission and interruption. Oravsky and others have conducted related research on electrorheological clutches, but there is no research and application on electrorheological clutches for automobiles.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the problems existing in the prior art, and provide an electrorheological automatic clutch for automobiles which utilizes the changing characteristics of the electrorheological fluid to realize power transmission and interruption between the automobile engine and the gearbox.

In order to solve the above-mentioned technical problems, the utility model is realized by adopting the following technical scheme: the electrorheological automatic clutch for automobiles includes a right end cover, a left end cover, a central shaft, a conductive ring, 6 active plates with the same structure, and a 5-plate structure The same driven plate, 5 No. 1 spacers with the same structure, left insulating sleeve, right insulating sleeve, 4 No. 2 spacers with the same structure, 6 No. 1 insulating plates with the same structure, connecting plate, and 5 pieces of structure The same No. 2 insulating sheet, sleeve, 6 bolts with the same structure and electrorheological fluid.

The sleeve is installed between the right end cover and the left end cover to form a contact connection, and is set on 6 active pieces with the same structure and 5 No. 1 spacers with the same structure to form a sliding connection. A No. 1 spacer is set between adjacent two of the 6 active plates with the same structure, and No. 1 insulating plates are respectively installed on the through holes of the spacers at the centers of the 6 active plates with the same structure. The bolts fixedly connect the right end cover, 6 active plates with the same structure placed alternately, and 5 No. 1 spacers with the same structure and the left end cover. The central shaft and the 5 driven pieces with the same structure are connected by spline pairs, and the 5 driven pieces with the same structure are separated by 4 No. 2 spacers with the same structure, and the periphery of the 5 driven pieces with the same structure are respectively installed There are No. 2 insulating sheets, 5 driven sheets with the same structure and 6 active sheets with the same structure arranged alternately. Left insulation sleeve and right insulation sleeve are housed on the middle diameter shaft of central shaft medium diameter, and left insulation sleeve and right insulation sleeve are installed in the through hole at the center of left end cover and right end cover through No. 2 bearing and No. 1 bearing to form rotation connection. The cavities formed between adjacent active plates and driven plates are filled with electrorheological fluid. The output end of the central shaft is fixedly sleeved with a conductive ring, and the connecting plate is fixedly installed on the left end surface of the left end cover.

The No. 1 bearing installed on the right end of the right insulating sleeve described in the technical proposal is connected in contact with the bearing end cover fixedly installed on the right end face of the right end cover, and the No. 2 bearing installed on the left end of the left insulating sleeve is in contact with the right end face of the positioning ring. The left end face of the positioning ring is in contact with the right end face of the connecting plate; the right end of the central shaft is a small-diameter shaft connected with the conductive ring through a coupling and the input shaft of the gearbox, and the middle part of the central shaft is set to be connected with the driven plate The fitted spline shaft is the large-diameter shaft. The two sides of the large-diameter shaft are set as middle-diameter shafts with equal diameters for the left and right insulating sleeves, that is, the central shaft is composed of a small-diameter shaft from the right end to the left end, and The middle-diameter shaft, the large-diameter shaft provided with splines and the middle-diameter shaft at the left end are sequentially integrated into one. The axis of rotation of the small diameter shaft, the middle diameter shaft at the right end, the large diameter shaft provided with splines, and the middle diameter shaft at the left end are collinear; the right end cover and the left end cover are disc-type structural parts with the same structure, and the right end cover There are 6 through holes evenly distributed around the periphery of the left end cover and the left end cover, and the center of the right end cover and the left end cover is provided with a boss, and the right insulating sleeve and the No. 1 bearing are processed at the center of the boss. And the through hole of the left insulating sleeve and the No. 2 bearing, the No. 4 sealing groove with the No. 4 sealing ring is installed on the left end face of the right end cover and the right end face of the left end cover; the active piece is a circular disc structure 6 bolt through holes for installing bolts are evenly distributed around the active piece, and a spacer through hole for fitting on the right end of the left insulating sleeve, No. 2 spacer or the left end of the right insulating sleeve is set at the center of the active piece. 4 to 6 main through holes for filling the electrorheological fluid and communicating with the cavity are evenly distributed between the through holes of the spacer sleeve and the 6 bolt through holes for installing bolts. The driven piece is a ring-shaped structural member, and a spline hole is arranged at the center of the driven piece to fit with a large-diameter shaft provided with a spline in the central shaft. 6 slave through holes for filling the electrorheological fluid and connecting the cavity; the No. 1 insulating sheet and the No. 2 insulating sheet are ring-shaped cross-sections of U-shaped nylon material to prevent different polarities from the active sheet and the slave Structural parts for short-circuiting of the moving piece; the thickness h of the cavity is 0.5-2mm; the left end surface of the right end cover and the right end surface of the sleeve are installed respectively There is a No. 4 sealing ring; the two ends of the bolts are respectively provided with No. 3 annular sealing grooves with the same structure, and No. 3 sealing rings are respectively installed in the two No. 3 annular sealing grooves; the left insulating sleeve and the center of the left end cover No. 1 sealing ring is respectively installed between the through hole at the center of the right insulating sleeve and the through hole at the center of the right end cover. No. 2 tight rings are respectively installed between the left insulating sleeve and the middle diameter shaft at the left end of the central shaft, and between the right insulating sleeve and the middle diameter shaft at the right end of the central shaft.

Compared with the prior art, the beneficial effects of the utility model are:

1. The electrorheological automatic clutch for automobiles described in the utility model can change the viscosity of the electrorheological fluid by changing the applied electric field, thereby changing the size of the torque transmitted by the clutch.

2. It only takes a few thousandths of a second for the electrorheological fluid used in the electrorheological automatic clutch for automobiles described in the utility model to change from liquid to solid, so the electrorheological automatic clutch for automobiles responds quickly.

3. The power of the entire clutch of the electrorheological automatic clutch for automobiles described in the utility model is only a few watts, so the energy consumption of the electrorheological automatic clutch for automobiles is relatively low.

4. The electrorheological fluid in the electrorheological automatic clutch for automobiles described in the utility model can rapidly change from liquid to solid or from solid to liquid as the voltage changes, so it has continuous controllability; due to the continuous controllability of the electrorheological fluid The controllability makes the shifting smooth, so the rapid and stable start and shifting of the car can be realized by reasonably controlling the electric field strength of the electrorheological fluid.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a full sectional view on the front view of the structural composition of the electrorheological automatic clutch for automobiles described in the utility model;

Fig. 2 is a schematic diagram of the working principle of the electrorheological fluid used in the electrorheological automatic clutch for automobiles described in the present invention;

In the figure: 1. Right end cover, 2. Bearing end cover, 3. Central shaft, 4. Conductive ring, 5. High voltage power supply, 6. Driving piece, 7. Driven piece, No. 8.3 sealing ring, No. 9.1 spacer, No. 10.4 sealing ring, No. 11.1 sealing ring, 12. Left insulating sleeve, No. 13.2 sealing ring, No. 14.2 spacer, No. 15.1 insulating sheet, 16. Connecting plate, No. 17.2 insulating sheet, 18. Sleeve, 19. Cavity , 20. Bolt, 21. Positioning ring.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

The electrorheological automatic clutch for automobiles described in the utility model redesigns the structure of the clutch, adopts electrorheological fluid, and is a clutch with an innovative structure. The utility model can change the viscosity of the electrorheological fluid by changing the applied electric field, thereby changing the size of the torque transmitted by the clutch. It only takes a few thousandths of a second for the electrorheological fluid to change from liquid to solid, so the response is fast; the power of the entire clutch is only a few watts, so the energy consumption is relatively low; as the voltage changes, the electrorheological fluid can change from liquid to solid or from solid Due to the continuous controllability of the electrorheological fluid, the shifting is smooth; therefore, the rapid and stable start and shift of the car can be realized by reasonably controlling the electric field strength of the electrorheological fluid. block.

Referring to Figure 1 and Figure 2, the electrorheological automatic clutch for automobiles includes a clutch housing (right end cover 1, sleeve 18, left end cover), bearing end cover 2, central shaft 3, conductive ring 4, and 6 driving plates with the same structure 6. 5 follower plates with the same structure 7. 12 No. 3 seal rings with the same structure 8. 5 No. 1 spacers with the same structure 9. 2 No. 4 seal rings with the same structure 10. 2 No. 1 seal rings with the same structure No. 1 sealing ring 11, left insulating sleeve 12, right insulating sleeve, 2 No. 2 sealing rings 13 with the same structure, 4 No. 2 spacers 14 with the same structure, 6 No. 1 insulating sheets 15 with the same structure, and connecting plates 16, 5 No. 2 insulating sheets with the same structure 17, 6 bolts with the same structure 20, 2 bearings with the same structure and electrorheological fluid.

The right end cap 1 and the left end cap are disc-like structural members with the same structure. The periphery of the right end cover 1 and the left end cover is evenly distributed with 6 through holes for passing through the bolts 20, and the center of the right end cover 1 and the left end cover is provided with a boss, and the center of the boss is processed with a mounting right The through hole of insulating sleeve and bearing and left insulating sleeve 12 and bearing.

The central shaft 3 is a stepped shaft structure, the right end is a small-diameter shaft connected to the input shaft of the gearbox through a coupling and the output shaft, and the right end is installed with a conductive ring 4. The middle of the central shaft 3 is set as a spline shaft That is, the large-diameter shaft, the two sides of the large-diameter shaft (spline shaft) are arranged as the middle diameter shaft of the equal diameter of the left insulating sleeve 12 and the right insulating sleeve. Therefore, the central shaft 3 is composed of the small-diameter shaft from the right end to the left end, the middle-diameter shaft at the right-hand end, the large-diameter shaft provided with splines, and the middle-diameter shaft at the left end. The small-diameter shaft and the middle-diameter shaft at the right end 1. The axis of rotation of the large-diameter shaft provided with splines and the middle-diameter shaft at the left end is collinear.

Said steel circular disc-shaped active piece 6 adopts 6 pieces altogether in the embodiment of the present utility model, and the structure of 6 pieces of active piece 6 is the same, and the periphery of each piece of active piece 6 is evenly distributed with 6 bolts for installation. 20 bolt through holes, the center of each active piece 6 is provided with a spacer through hole for being sleeved on the right end of the left insulating sleeve 12, No. 2 spacer 14 or the left end of the right insulating sleeve, and the spacer through hole and the left end of the right insulating sleeve Between the 6 bolt through holes for installing the bolts 20, 4 to 6 main through holes for filling the electrorheological fluid (communicating with the cavity 19) are evenly distributed.

Described steel annular disk-shaped driven plate 7 adopts 5 altogether in the embodiment of the present utility model, and the structure of 5 driven plates 7 is identical, and the center of each driven plate 7 is provided with one and the center The spline hole where the spline shaft in axis 3 fits. Around the spline hole, 4 to 6 slave through holes for filling the electrorheological fluid (communicating with the cavity 19) are evenly distributed. The assembled spline hole and the axis of rotation of the spline shaft in the central shaft 3 are collinear.

Clutch housing is made up of left end cover, sleeve 18 and right end cover 1, wherein the left end face of left end cover is fixedly installed on the right end face of connecting plate 16, and the left end face of connecting plate 16 is fixedly installed on the engine flywheel. Between the left end cover and the right end cover 1, 6 active plates 6 with the same structure are installed, and the adjacent two of the 6 active plates 6 with the same structure are separated by No. 1 spacers 9, and 5 No. 1 spacers 9 The structure is the same, and the No. 1 spacer 9 and the left end cover are fixedly connected together by bolts 20 to the right end cover 1, 6 structurally identical active plates 6, and 5 structurally identical No. 1 spacers 9 . The number of active plates 6 can be properly adjusted according to the torque to be transmitted by the electrorheological automatic clutch for automobiles.

The central shaft 3 and five follower pieces 7 with the same structure are connected by spline pairs, and the five follower pieces 7 with the same structure are separated from each other by four No. 2 spacers 14 with the same structure. Five driven plates 7 with the same structure and six active plates 6 with the same structure are alternately arranged, that is, one driven plate 7 is arranged between two adjacent active plates 6 . The shaft section of the same diameter in the central shaft 3 is equipped with a left insulating sleeve 12 and a right insulating sleeve, the left insulating sleeve 12 and the right insulating sleeve have the same structure, and the left insulating sleeve 12 and the right insulating sleeve are installed in the left end cover and the right end cover 1 through bearings , the right end face of the outer bearing ring of the No. 1 bearing installed on the right end of the right insulating sleeve is in contact with the positioning flange on the left end face of the bearing end cover 2 fixed on the right end face of the right end cover 1, realizing the connection between the No. 1 bearing and the right insulating sleeve Axial positioning, the left end face of the No. 2 bearing outer bearing ring installed on the left end of the left insulating sleeve 12 is in contact with the right end face of the positioning ring 21, and the left end face of the positioning ring 21 is connected with the right end of the connecting plate 16 fixed on the engine flywheel The surface contact connection realizes the axial positioning of the No. 2 bearing and the left insulating sleeve 12. The right end of the central shaft 3, that is, the output end, is fixedly covered with a conductive ring 4, and the high-voltage power supply 5 is electrically (contacted) connected with the conductive ring 4 through an elastic frame. electricity. The right end of the central shaft 3 is connected with the insulator and the input shaft of the gearbox through a coupling, and the axis of rotation of the clutch central shaft 3 is collinear with the axis of rotation of the input shaft of the gearbox. Wherein the number of driven plates 7 and the like can vary according to the variation of the number of active plates 6 in the electrorheological automatic clutch for automobiles.

A torus-shaped cavity 19 with a thickness h of 0.5-2mm is formed between the adjacent active plates 6 and driven plates 7, and the 10 torus-shaped cavities 19 are filled with electrorheological fluid. The driven piece 7 is connected to the conductive ring 4 as the positive pole, and the active piece 6 is connected to the vehicle body as the negative pole. Therefore, an electric field is formed at the cavity 19 to act on the electrorheological fluid.

A left insulating sleeve 12 is installed between the central shaft 3 and the left end bearing, and a right insulating sleeve is installed between the central shaft 3 and the right end bearing, which can prevent the central shaft 3, the left end cover and the right end cover 1 from being short-circuited, and through which 5 The driven plates 7 with the same structure are pressed against each other. The outer rings (periphery) of the 5 follower pieces 7 with the same structure are wrapped with No. 2 insulating sheets 17 of nylon material with a U (or door) shape in cross section, and the inner ring of the active piece 6 has a U cross section. The No. 1 insulation sheet 15 wrapping of the nylon material of word (or be in other words door word) shape can prevent the short circuit of active sheet 6 and driven sheet 7 of different polarities.

No. 2 annular sealing groove is arranged on the through hole of left insulating sleeve 12 and right insulating sleeve, and No. 2 sealing ring 13 is placed; No. 1 annular sealing groove, place No. 1 sealing ring 11; No. 3 annular sealing groove with the same structure is respectively arranged at the left and right ends of the bolt 20, and No. 3 sealing ring 8 with the same structure is installed; on the left end surface of the right end cover 1 There is a larger No. 4 sealing groove on the right end surface of the left end cover, and No. 4 sealing rings 10 are respectively installed in the No. 4 sealing grooves on the right end cover 1 and the left end cover. The sleeve 18 is installed on the right end cover 1 and the left end. The covers are contacted and connected, and are set on 6 active plates 6 with the same structure and 5 No. 1 spacers 9 with the same structure to form a sliding connection, and then 6 bolts 20 with the same structure are used for fixed connection. The right end cover 1 and the The No. 4 sealing ring 10 on the left end cover acts as a seal and can prevent the leakage of the electrorheological fluid.

The working principle of the electrorheological automatic clutch for automobiles:

The engine flywheel drives the connecting plate 16 to rotate, and then drives the left end cover fixedly connected with the connecting plate 16, the sleeve 18, 6 active plates 6 with the same structure, 5 No. 1 spacers 9 with the same structure, and right end covers 1 and 6 Two bolts with the same structure are rotated. After the power is turned on, the torque is transmitted from 6 active plates 6 with the same structure to 5 driven plates 7 with the same structure, and then to the central shaft 3 through the force transmission characteristics of the electrorheological fluid. passed to the gearbox. Since the magnitude of the electric field affects the viscosity of the electrorheological fluid, the magnitude of the torque transmitted from the engine to the gearbox can be changed by changing the magnitude of the applied electric field, which ranges from zero to the maximum torque of the engine.

In the embodiment of the present utility model, the thickness of 10 ring-shaped cavities 19 with the same structure formed by 6 active plates 6 with the same structure and 5 driven plates 7 with the same structure is designed to be 1mm, and the 10 structures are the same. The outer diameter of the torus-shaped cavity 19 is about 150mm, and the inner diameter is about 30mm. On the conductive ring 4, a voltage of 0-3KV is added, so 0-3KV/ The annular uniform electric field with mm electric field strength, the pressure of electrorheological fluid is 10KPa. With the increase of the electric field strength, the torque that the clutch can transmit gradually increases from zero to a maximum of more than 200N·m, which meets the performance of general automobiles.

Claims (10)

1. A kind of electrorheological automatic clutch for automobile, it is characterized in that, described electrorheological automatic clutch for automobile comprises right end cover (1), left end cover, central shaft (3), conductive ring (4), 6 pieces of structure are identical The driving piece (6), 5 follower pieces (7) with the same structure, 5 No. 1 spacers (9) with the same structure, the left insulating sleeve (12), the right insulating sleeve, and 4 No. 2 spacers with the same structure Spacer (14), 6 No. 1 insulating sheets (15) with the same structure, connecting plate (16), 5 No. 2 insulating sheets (17) with the same structure, sleeve (18), 6 bolts with the same structure (20) and electrorheological fluid; The sleeve (18) is installed between the right end cover (1) and the left end cover to form a contact connection, and is set on 6 active pieces (6) with the same structure and 5 No. 1 spacers (9) with the same structure to slide connection, a No. 1 spacer (9) is set between adjacent two of the 6 active pieces (6) with the same structure, and the spacers at the center of the 6 active pieces (6) with the same structure are respectively installed on the through holes There is a No. 1 insulating piece (15), adopting 6 bolts (20) with the same structure to connect the right end cover (1), 6 active pieces (6) with the same structure and 5 No. 1 spacers with the same structure ( 9) It is fixedly connected with the left end cover, the central shaft (3) and the 5 driven pieces (7) with the same structure are connected by spline pairs, and the 5 driven pieces (7) with the same structure adopt 4 No. 2 pieces with the same structure Spacers (14) are separated, and No. 2 insulating sheets (17) are respectively installed on the periphery of 5 driven pieces (7) with the same structure, and 5 driven pieces (7) with the same structure and 6 active pieces with the same structure The sheets (6) are arranged alternately, and the middle diameter shaft of the central shaft (3) is equipped with a left insulating sleeve (12) and a right insulating sleeve, and the left insulating sleeve (12) and the right insulating sleeve are installed through the No. 2 bearing and the No. 1 bearing The through hole at the center of the left end cover and the right end cover (1) is rotationally connected, and the cavity (19) formed between the adjacent driving piece (6) and driven piece (7) is filled with electrorheological fluid, The output end of the central shaft (3) is fixedly sleeved with a conductive ring (4), and the connecting plate (16) is fixedly installed on the left end face of the left end cover. 2. according to the described automobile electrorheological automatic clutch of claim 1, it is characterized in that, described No. 1 bearing installed on the right end of the right insulating sleeve and the bearing end cover ( 2) Contact connection, the No. 2 bearing installed on the left end of the left insulating sleeve (12) is in contact with the right end face of the locating ring (21) and is connected, and the left end face of the locating ring (21) is in contact with the right end face of the connecting plate (16). 3. according to the described automobile electrorheological automatic clutch of claim 1, it is characterized in that, the right end of described center shaft (3) is the small that is connected with gearbox input shaft by coupling and gearbox input shaft that conductive ring (4) is installed. Diameter shaft, central shaft (3) middle place is set as the spline shaft that is matched with driven plate (7), namely large diameter shaft, the both sides of large diameter shaft are set to install left insulating sleeve (12) and right insulating sleeve The middle diameter shaft of equal diameter, i.e. the center shaft (3) is successively connected into one by the small diameter shaft from the right end to the left end, the middle diameter shaft at the right end, the large diameter shaft provided with splines and the middle diameter shaft at the left end, the small The axis of rotation of the diameter shaft, the middle diameter shaft at the right end, the large diameter shaft provided with splines and the middle diameter shaft at the left end are collinear. 4. according to the described automobile electrorheological automatic clutch of claim 1, it is characterized in that, described right end cap (1) and left end cap are the disc type structure member of identical structure, the right end cap (1) and left end cap There are 6 through holes for passing through the bolts (20) evenly distributed on the periphery, a boss is arranged at the center of the right end cover (1) and one side of the left end cover, and the center of the boss is processed to install the right insulating sleeve and 1 The through hole of No. bearing and left insulation sleeve (12) and No. 2 bearings is provided with No. 4 seal grooves that No. 4 sealing rings (10) are installed on the left end face of right end cover (1) and the right end face of left end cover. 5. according to the described automobile electrorheological automatic clutch of claim 1, it is characterized in that, described driving piece (6) is the annular disk-shaped structural member, and the periphery of driving piece (6) is evenly distributed 6 for installing The bolt through hole of the bolt (20), the center of the active piece (6) is provided with a spacer through hole for being sleeved on the right end of the left insulating sleeve (12), No. 2 spacer sleeve (14) or the left end of the right insulating sleeve 4 to 6 main through holes for filling the electrorheological fluid and connecting the cavity (19) are evenly distributed between the spacer through holes and the 6 bolt through holes for installing the bolts (20); The driven plate (7) is an annular disc-shaped structure, and the center of the driven plate (7) is provided with a spline hole fitted with a large-diameter shaft provided with a spline in the central shaft (3), Around the spline hole, 4 to 6 slave through holes for filling the electrorheological fluid and communicating with the cavity (19) are evenly distributed. 6. The electrorheological automatic clutch for automobile according to claim 1, characterized in that, said No. 1 insulating sheet (15) and No. 2 insulating sheet (17) are made of U-shaped nylon material with an annular cross section. A structural member that prevents the short circuit between the driving piece (6) and the driven piece (7) of different polarities. 7. The electrorheological automatic clutch for automobiles according to claim 1, characterized in that, the thickness h of the cavity (19) is 0.5-2 mm. 8. The electrorheological automatic clutch for automobile according to claim 1, characterized in that, the left end face of the right end cover (1) is in contact with the right end face of the sleeve (18) and the left end face of the sleeve (18). No. 4 sealing rings (10) are respectively installed between the right end faces of the left end caps. 9. The electrorheological automatic clutch for automobile according to claim 1, characterized in that, the two ends of the bolt (20) are respectively provided with No. 3 annular sealing grooves with the same structure, and the two No. 3 annular sealing grooves are respectively No. 3 sealing ring (8) is installed. 10. The electrorheological automatic clutch for automobile according to claim 1, characterized in that, the through hole at the center of the left insulating sleeve (12) and the left end cover and the through hole at the center of the right insulating sleeve and the right end cover (1) No. 1 sealing ring (11) is respectively installed between the through holes; No. 2 tight rings (13) are respectively installed between the left insulating sleeve (12) and the middle diameter shaft at the left end of the central shaft (3) and between the right insulating sleeve and the middle diameter shaft at the right end of the central shaft (3). the

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