WO2009074034A1 - Automatic clutch for motorcycle - Google Patents

Abstract

An automatic clutch for motorcycle includes a front disc (1), a back disc (2) and a middle disc (3). The left end of the middle disc (3) is in wall shape and forms a cavity together with the wall of the back disc (2) to restrict the axial displacement of a driven disc (4) arranged at the left side. An abdominal cavity of the middle disc (3) is coaxially and uniformly hinged with two to six fly hammers (5). A hammer handle is arranged at the left part of the fly hammer (5) and a hammer body is arranged at the right part. The left end of the hammer handle is provided with a pivoting hole which is hinged on the hinge base at the middle part of the left side of the middle disc (3). The left side of the right part hammer body is provided with pressing finger (7) pressed at right end of a clutch pressure plate. In the cavity of the right part hammer body there is a return piston (8) and a return piston spring (9). The spherical top end of the return piston (8) reciprocates on an orbit on a cavity wall of an inner hole of the middle disc (3). The high-speed centrifugal force of an engine leads a fly hammer group to be pressed a clutch membrane group (13) in the back disc (2), so as to transmit power to an output disc connected with a gearbox.

Description

 Specification for an automatic clutch for a vehicle

 Technical field

 [1] The present invention relates to the field of automotive transmission, and more particularly to an automatic clutch for a vehicle.

 Background technique

 [2] Motor vehicles (such as cars, trains, tractors, construction vehicles, tanks, armored vehicles, motorcycles, etc.) In the power train, one important transmission component is the clutch. The clutch acts to transmit and cut off the power. Unlike the general machine clutch, the clutch of the motor vehicle needs to meet the requirements of the motor vehicle to engage and cut off the power under various working conditions, and its performance is much higher, especially the automatic variable speed motor vehicle. Higher performance and more demanding clutch performance.

 [3] The existing motor vehicle clutches mainly use two types, one is a hydraulic torque converter (hydraulic coupling), which is mainly used in automatic transmission vehicles, continuously variable speed vehicles, and engineering vehicles. The advantages are smooth power transmission and good automatic performance. The disadvantages are complicated technology, high cost and low transmission efficiency. The other type is dry friction clutch, which is mainly used in manual transmission vehicles. Its advantages are simple structure and low cost. Disadvantages are short life, poor maneuverability, and difficulty in automatic control.

 [4] With the rapid development of the automobile market, people are increasingly demanding automatic cars and automatic clutch cars.

However, at present, most of China's automobile industry purchases foreign hydraulic torque converters or automatic transmissions. The foreign automatic transmissions consume a lot of fuel, which greatly limits the development of China's national automobile industry. Therefore, it is necessary to invent a vehicle automatic clutch with good automatic performance, high transmission efficiency (energy saving) and moderate cost to meet the needs of the Chinese automobile development market.

 Disclosure of invention

 technical problem

 [5] The present invention provides an automatic clutch for a vehicle, which can effectively solve the problem of poor automatic performance of the existing vehicle clutch

, the problem of low transmission efficiency.

 Technical solution

[6] The technical solution of the present invention is as follows:

[7] An automatic clutch for a vehicle, comprising a front disc, a rear disc and a middle disc, wherein the front disc is a circular metal disc, front The right end of the central portion of the disk is coaxially fixed to the engine output shaft, the middle plate is a circular metal disk, the right end of the outer circumference of the middle plate is coaxially fixed with the front plate, and the left end of the outer circle is coaxially fixed with the rear disk, The rear disc is a circular metal disc, and the right end of the outer disc of the rear disc is fixedly connected with the middle disc, wherein: the central portion of the left end of the middle disc is wall-shaped, forming a cavity with the rear disc wall, and is restricted to be mounted on the left side. The axial displacement of the driven disc is coaxially articulated in the abdominal cavity of the middle disc with 2-6 flying hammers of the same specification, the flying hammer is a metal body, the left part is a hammer handle, and the right part is a hammer body. The left end of the hammer handle is provided with a pivot hole hinged on the left middle hinge of the middle plate, and a right side of the hammer handle is also provided with a hole hinged to the link, and the right side of the right hammer body is provided with a press on the right end of the clutch platen. Pressing the finger, a return piston and a return piston spring are arranged in the right hammer cavity, and the top end of the return piston is arcuately reciprocated on the track on the inner cavity wall of the middle disc.

 a check valve is arranged at the bottom of the cavity of the return piston. When the return piston compresses the return piston spring 吋, the check valve is closed, and the oil of the return piston bore dampens the movement speed of the piston, thereby damping the clutch engagement speed. When the piston spring pushes the piston back to the 吋 position, the check valve opens and the speed is not limited.

 The different sections of the moving track of the return piston are designed to have different curves from the concentric tangential angle of the pivot hole, and the angle between the curve and the concentric circle of the pivot hole is large, which increases the resistance of the centrifugal swing of the flying hammer. The retarding clutch engagement speed makes the joining process longer; the angle between the curve and the pivot hole concentric tangential line is small, and the centrifugal swinging resistance of the flying hammer is reduced, which is beneficial to the clutch engagement state. The piston motion orbit curve design is determined by the torque curve of the matched engine.

 The left end of the rear disc is a circular tube shaft, the tubular body extends into the gearbox body, and is coupled with the transmission oil seal to seal the oil, and the end of the tubular body is made of a spline for driving the oil pump or other device, and the tube shaft is for shifting The box input shaft extends into the clutch body and is linked to the driven disc. A clutch diaphragm group and a driven disc are disposed in the rear disc cavity, and the rear disc cavity is formed with an internal spline matching the active diaphragm spline specification; the clutch diaphragm group is composed of a clutch platen, an active diaphragm group, According to the driven diaphragm group, the thickness of the clutch platen is thicker than that of the active diaphragm group and the driven diaphragm group, and the right end of the clutch platen is subjected to the thrust of the flyweight group pressing finger, and the left end pushes the clutch diaphragm, and the clutch pressure is pressed. The outer circumference of the disc is made of an external spline matching the spline specification in the rear disc, and then the disc is rotated equigantly and axially moved, and the outer circumference of the active diaphragm is made into an external spline matching the spline specification in the rear disc, and then The disc is rotated at an equiangular angle and moved axially. The inner circle of the driven diaphragm is made of an internal spline that matches the outer spline specification of the driven disc, and the driven disc is rotated at an equal angle and moved axially.

The active diaphragm of the active diaphragm group is formed into a truncated conical disc, and the driven diaphragm of the driven diaphragm group Or the driven diaphragm of the driven diaphragm group is made into a truncated cone-shaped disc, the active diaphragm of the active diaphragm group is a flat piece; or the driven diaphragm of the driven diaphragm group Made with a number of elastic tongues, the two sides of the tongue protruding from each other, the active diaphragm of the active diaphragm group is a flat piece; or the active diaphragm of the active diaphragm group is made with a number of elastic tongues, tongue curling The two sides of the film are extended from each other, and the driven diaphragm of the driven diaphragm group is a flat sheet. The purpose of the "one disc, one flat" or "elastic tongue plus flat sheet" scheme is: the flying hammer is loosely pressed, and the active diaphragm driven diaphragm is effectively separated to form a gap, the active diaphragm and the driven diaphragm. For a dual installation of the master and the slave, the number of diaphragms is designed according to the transmission power requirements. The function of the rear disc is to carry the transmission force, connect the middle disc, limit the driven disc, carry the clutch pressure plate, the active diaphragm, the sealing oil, and provide power to the transmission oil pump.

[12] The clutch pressure plate, the active diaphragm and the driven diaphragm are all high-quality steel with high hardness. The clutch platen has a large thickness and good steel properties.

 [13] The outer circumference of the driven disc is made of an external spline matched with the spline in the driven diaphragm, and the rotational power transmitted by the driven diaphragm is received, and the driven diaphragm group is axially displaced, and the driven disc The inner bore of the center is made with an internal spline that matches the spline of the gearbox input shaft to transmit power to the gearbox.

 [14] The function of the middle plate is to bear the transmission force, connecting the front plate, the rear plate, the limit driven plate, carrying the flyweight group, providing the flying hammer group movable space and the hinged flying hammer and the seat of the reset flying hammer; The function of the flying hammer group is to push the clutch diaphragm group (joining function), the loose pressure diaphragm group (separation function), and the force of the flying hammer group pushing the clutch diaphragm group is derived from the high-speed rotating centrifugal force of the engine, the flying hammer The force of the group of loose pressure clutch diaphragms is derived from the engine's idle state, the centrifugal force drop, the return stroke of the return piston and the return piston spring. The one-way valve in the flyweight block acts to block the engagement speed of the clutch diaphragm.

 [15] The device of the invention can also be mirrored, that is, the flying hammer is placed in the rear disk cavity, the clutch diaphragm is placed in the middle disk cavity, and the flying hammer works to circulate the pivoting needle to press the diaphragm.

 Beneficial effect

 [16] The beneficial effects of the present invention are as follows:

 [17] The invention has the advantages of simple structure, good automatic responsiveness, smooth jointing, high transmission efficiency, long service life and moderate cost, and provides a technical solution for solving automobile automation.

 DRAWINGS

 [18] FIG. 1 is a schematic structural view of a clutch engagement state of the present invention

Figure 2 is a schematic view showing the structure of the clutch separation state of the present invention. [20] FIG. 3 is a schematic structural view of a clutch separation state of the present invention

 [21] In the drawing, 1 is the front disc, 2 is the rear disc, 3 is the middle disc, 4 is the driven disc, 5 is the flying hammer, 6 is the pivoting hole, 7 is the pressing finger, 8 is the returning piston, 9 is a return piston spring, 10 is a moving track, 11 is a one-way valve, 12 is a transmission oil seal, 13 is a clutch diaphragm group, 14 is a clutch pressure plate, 15 is a gearbox input shaft, and 16 is an engine output shaft.

 BEST MODE FOR CARRYING OUT THE INVENTION

 [22] As shown in FIG. 1 to 2, an automatic clutch for a vehicle includes a front disc, a rear disc and a middle disc. The front disc is a circular metal disc, and the right end of the central portion of the front disc is coaxial with the engine output shaft. The middle plate is a circular metal plate, the right end of the outer circumference of the middle plate is coaxially fixed with the front plate, the left end of the outer circle is coaxially fixed with the rear plate, and the rear plate is a circular metal plate, The right end of the outer circle of the disk is fixedly connected with the middle plate, and the central portion of the left end of the middle plate is wall-shaped, forming a cavity with the rear disk wall, restricting axial displacement of the driven plate mounted on the left side, and coaxially in the abdominal cavity of the middle plate There are 2-6 flying hammers of the same specification with bearing capacity. The flying hammer is a metal body, the left part is a hammer handle, the right part is a hammer body, and the left end of the hammer handle is provided with a pivot hole hinged to the left side of the middle plate. On the middle hinge seat, a right side of the hammer handle is also provided with a hole hinged to the connecting rod, and a right side of the right hammer body is provided with a pressing finger pressed against the right end of the clutch pressing plate, and a right returning piston is arranged in the right hammer body cavity. The return piston spring reciprocates on the track on the inner wall of the inner disk in an arc shape at the top end of the return piston.

 [23] The check piston has a check valve at the bottom of the cavity, and when the return piston compresses the return piston spring 吋, the check valve is closed, and the oil of the return piston is damped by the movement speed of the piston, thereby damping When the piston spring pushes the piston back to the position, the check valve opens and the speed is not limited.

 [24] The different sections of the moving track of the return piston are designed to have different curves from the concentric tangential angle of the pivot hole, and the angle between the curve and the concentric tangential line of the pivot hole is large, and the flying hammer is enlarged. The resistance of the swing and the engagement speed of the retarding clutch make the joining process longer; the angle between the curve and the concentric circle of the pivot hole is small, and the centrifugal swinging resistance of the flying hammer is reduced, which is advantageous for the clutch to be engaged more tightly. The piston motion orbit curve design is determined by the torque curve of the matched engine.

[25] The left end of the rear disc is a circular tube shaft, the tubular body extends into the gearbox body, and is coupled with the gearbox oil seal to seal the oil, and the end of the tubular body is made of a spline for driving the oil pump or other device, in the tube shaft The hole is supplied to the input shaft of the transmission into the clutch body and linked to the driven plate. A clutch diaphragm group and a driven disc are disposed in the rear disc cavity, and the rear disc cavity is formed with an internal spline matching the active diaphragm spline specification; the clutch diaphragm group is composed of a clutch platen, an active diaphragm group, According to the driven diaphragm group, the thickness of the clutch platen is thicker than the thickness of the active diaphragm group and the driven diaphragm group. The right end of the clutch platen is subjected to the thrust of the flyweight group pressing finger, the left end pushes the clutch diaphragm, and the outer ring of the clutch platen is made of an external spline matching the spline specification in the rear plate, and then the disk is equiangularly rotated and axially Moving, the outer circumference of the active diaphragm is made of an external spline matching the spline size of the rear disc, and then the disc is rotated equi-angularly and axially moved, and the inner circle of the driven diaphragm is matched with the spline specification of the driven disc. The internal spline, the follower disk is rotated at an equal angle and moves axially.

 [26] The active diaphragm of the active diaphragm group is formed into a truncated conical disc, the driven diaphragm of the driven diaphragm group is a flat sheet; or the driven diaphragm of the driven diaphragm group a truncated cone-shaped disc, the active diaphragm of the active diaphragm group is a flat sheet; or the driven diaphragm of the driven diaphragm group is formed with a plurality of elastic tongues The active diaphragm of the active diaphragm group is a flat sheet; or the active diaphragm of the active diaphragm group is formed with a plurality of elastic tongues, the tongue-and-eye projections are extended on both sides, and the driven diaphragm of the driven diaphragm group It is a flat piece. The purpose of the "one disc, one flat" or "elastic tongue plus flat sheet" scheme is: the flying hammer is loosely pressed, and the active diaphragm driven diaphragm is effectively separated to form a gap, the active diaphragm and the driven diaphragm. For the dual installation of one master and one slave, the number of diaphragms is designed according to the transmission power requirement, and this embodiment is 7 pairs. In the embodiment, the elastic flap is applied to the flat sheet, and the disc is also a driven diaphragm, and the elastic flap can also be an active diaphragm. The function of the rear disc is to carry the transmission force, connect the middle disc, the limit output disc, carry the clutch pressure plate, the active diaphragm and the oil seal.

 [27] The clutch pressure plate, the active diaphragm and the driven diaphragm are all high-quality steel with high hardness. The clutch platen has a large thickness and good steel properties.

 [28] The outer circumference of the driven disc is made of an external spline matched with the spline in the driven diaphragm, and the rotational power transmitted by the driven diaphragm is received, and the driven diaphragm group is axially displaced, and the driven disc The inner bore of the center is made with an internal spline that matches the spline of the gearbox input shaft to transmit power to the gearbox.

 [29] The function of the middle plate is to bear the driving force, connecting the front plate, the rear plate, the limit driven plate, carrying the flyweight group, providing the flying hammer group movable space and the hinged flying hammer and the seat of the reset flying hammer; The function of the flying hammer group is to push the clutch diaphragm group (joining function), the loose pressure diaphragm group (separation function), and the force of the flying hammer group pushing the clutch diaphragm group is derived from the high-speed rotating centrifugal force of the engine, the flying hammer The force of the group of loose pressure clutch diaphragms is derived from the engine's idle state, the centrifugal force drop, the return stroke of the return piston and the return piston spring. The one-way valve in the flyweight block acts to block the engagement speed of the clutch diaphragm.

[30] As shown in FIG. 3, the device of the present invention can also be mirrored, that is, the flying hammer is placed in the rear disk cavity, and the clutch diaphragm is placed. Placed in the middle disc cavity, the flying hammer works around the pivoting needle to press the diaphragm. Embodiments of the invention

 [31]

 Industrial applicability

 [32]

 Sequence table free content

 [33]

Claims

Claim  [1] An automatic clutch for a vehicle, comprising a front disc (1), a rear disc (2) and a middle disc (3), the front disc (1) being a circular metal disc, and the front disc (1) central portion The right end is coaxially fixed with the engine output shaft (16), the middle plate (3) is a circular metal disk, and the right end of the outer disk of the middle plate (3) is coaxially fixed with the front plate (1), and the left end of the outer circle is The rear disc (2) is coaxially fixed, the rear disc (2) is a circular metal disc, and the outer right end of the rear disc (2) is fixedly connected with the middle disc (3), wherein: the middle disc (3) The left end of the center is wall-shaped, forming a cavity with the rear disc (2) wall, restricting the axial displacement of the driven disc (4) mounted on the left side, and the inner disc (3) is coaxially articulated in the abdominal cavity. -6 flying hammers of the same specification (5), the flying hammer (5) is a metal body, the left part is a hammer handle, the right part is a hammer body, and the left end of the hammer handle is provided with a pivot hole (6) Hinged to the middle hinge on the left side of the middle plate (3), the left side of the right hammer body is provided with a pressure finger (7) pressed against the right end of the clutch platen, and a return piston (8) is arranged in the right hammer body cavity. Return piston spring (9), return ball (8) spherical tip in the middle plate (3) Cavity wall reciprocated movement path (10).  [2] An automatic clutch for a vehicle according to claim 1, wherein: said return piston (8)  a check valve (11) is provided at the bottom of the cavity, and when the return piston (8) is compressed to return to the piston spring (9), the check valve (11) is closed, and when the piston spring (9) is pushed back to the piston ( 8) Return position 吋, the check valve (1 1) is opened, and the check valve (11) is used to block the engagement speed of the clutch diaphragm.  [3] An automatic clutch for a vehicle according to claim 1, wherein: said return piston (8)  The movement track (10) and the pivot hole (6) have different angles formed by the concentric tangential angle, and the curve has a large angle with the concentric circle of the pivot hole (6), and the clutch is combined with the inter-turn length. The angle between the curve and the pivot hole (6) is smaller than that of the concentric tangential line, and the clutch is tightly coupled; the curve design of the moving track (10) of the return piston (8) is determined by the torque curve of the matched engine.  [4] The automatic clutch for a vehicle according to claim 1, wherein: the left end of the rear disc (2) is a circular tube shaft, and the tube body of the circular tube is located in the transmission body and the gearbox Oil seal (12) Coupling oil seal, the end of the pipe body is a spline for driving the oil pump or other device, and the gearbox input shaft (15) is located in the middle hole of the pipe shaft and is linked with the driven plate. [5] The automatic clutch for a vehicle according to claim 1, wherein: the rear diaphragm (2) is provided with a clutch diaphragm group (13) and a driven disc (4), and a rear disc (2) The cavity is made of an internal spline matching the active diaphragm spline specification; the clutch diaphragm group (13) is composed of a clutch platen, an active membrane The sheet group and the driven diaphragm group are configured, the thickness of the clutch platen is thicker than that of the active diaphragm group and the driven diaphragm group, and the right end of the clutch platen is subjected to the thrust of the flyweight group pressing finger, and the left end pushes the clutch diaphragm. The outer circumference of the clutch platen is made of an external spline matching the spline specification of the rear disc (2), and then the disc (2) is rotated at an equal angle and moved axially, and the active diaphragm is made of an outer circle and a rear disc (2) ) The external spline is matched with the external spline, and then the disc (2) is rotated at an equal angle and moved axially. The inner circle of the driven diaphragm is made into an internal spline that matches the specification of the follower disc (4). The moving plate (4) rotates equiangularly and moves axially. [6] The automatic clutch for a vehicle according to claim 5, wherein: the active diaphragm of the active diaphragm group is formed into a truncated conical disc, and the driven diaphragm group is driven. The diaphragm is a flat piece; or the driven diaphragm of the driven diaphragm group is formed into a truncated cone-shaped disc, the active diaphragm of the active diaphragm group is a flat piece; or the driven diaphragm group is driven The diaphragm is made with a plurality of elastic tongues, the tongues are extended on both sides of the sheet, the active diaphragm of the active diaphragm group is a flat sheet; or the active diaphragm of the active diaphragm group is made with a plurality of elastic tongues, The two sides of the tongue are protruded from each other, and the driven diaphragm of the driven diaphragm group is a flat piece.  [7] An automatic clutch for a vehicle according to claim 5 or 6, wherein the clutch platen (14), the active diaphragm, and the driven diaphragm are all high-hardness steel materials.  [8] An automatic clutch for a vehicle according to claim 1 or 5, wherein: the driven disc  (4) The outer circle is made of an external spline matching the spline in the driven diaphragm, which is used to receive the rotational power transmitted by the driven diaphragm and the axial displacement of the driven diaphragm group, and the inner hole of the driven disc center An internal spline that is splined to the gearbox input shaft (15) is used to transmit power to the transmission.  [9] The automatic clutch for a vehicle according to claim 1, wherein: the middle plate (3) functions as a transmission force, and connects the front plate (1) and the rear plate (2), and is limited. The driven plate (4), carrying the flying hammer group, provides the flyweight group movable space and the hinged flying hammer (7), and the seat of the resetting flying hammer (7); the function of the flying hammer group is to push the clutch diaphragm group (13) ), the loose-pressure clutch diaphragm group, the flying hammer group pushes the clutch diaphragm group (13) by the high-speed rotating centrifugal force of the engine, and the flying hammer group is in an idle state by the engine, and the centrifugal force is decreased to loosen the clutch diaphragm group (13) , the return stroke of the return piston (8) and the return piston spring (9).