CN215059190U

CN215059190U - Damping dual-mass flywheel

Info

Publication number: CN215059190U
Application number: CN202023088199.8U
Authority: CN
Inventors: 张洛泽
Original assignee: Shenyang Valeo Pyeong HWA Transmission Systems Co Ltd
Current assignee: Shenyang Valeo Pyeong HWA Transmission Systems Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-12-07
Anticipated expiration: 2030-12-21

Abstract

The utility model belongs to the technical field of the damping flywheel and specifically relates to a damping dual mass flywheel, including main flywheel, secondary flywheel, shock attenuation portion and drive plate, wherein main flywheel and engine crankshaft connect, secondary flywheel installs on the clutch input shaft, is equipped with shock attenuation portion and drive plate between main flywheel and the secondary flywheel, just the drive plate links firmly with secondary flywheel, the drive plate includes main drive plate, auxiliary drive board and friction portion, and wherein main drive plate and secondary flywheel contact, the main drive plate outside are equipped with the bulge that offsets with the spring, and the auxiliary drive plate is embedded in the main drive plate and links firmly with secondary flywheel after passing main drive plate through the mounting, is equipped with friction portion between main drive plate and the auxiliary drive plate. The utility model discloses when the engine took place the moment of torsion, the friction portion in the drive plate can prevent to strike and convey for the derailleur.

Description

Damping dual-mass flywheel

Technical Field

The utility model belongs to the technical field of the damping flywheel and specifically relates to a damping dual mass flywheel.

Background

The damping flywheel is arranged between the crankshaft of the engine and the input shaft of the transmission, and because the explosion stroke of the engine does not occur continuously but occurs once, the power output by the crankshaft drives the damping flywheel to rotate and vibrate, and the damping flywheel can reduce torsion and vibration and bring stable torque.

In order to accommodate a wider range of engine speeds and to more consistently accept a wide variety of engine loads, the current trend is to employ dual mass flywheels of two masses.

The dual-mass flywheel comprises a main flywheel, a secondary flywheel, a driving plate, a spring and a bearing, wherein the main flywheel is connected with an engine crankshaft, the secondary flywheel is connected with the main flywheel through the bearing and can rotate mutually and output power through a clutch, the driving plate is connected with one side of the secondary flywheel through a fixing piece, the driving plate supports one end of the spring, the other end of the spring is in a structure supported by the main flywheel, when the main flywheel connected to the engine crankshaft transmits power, the torque is buffered and damped through the spring, then the secondary flywheel is transmitted through the driving plate, the main flywheel has angular acceleration change and torque change relative to the engine through the action of the spring, and on the contrary, the secondary flywheel becomes a stable torque transmission through the buffering and friction damping action of the spring.

The springs are arranged in the spring guide rails, the springs are arranged between the main flywheel and the secondary flywheel and are arranged along the circumferential direction, the drive plate is provided with protrusions, a drive portion is arranged in the main flywheel, the main flywheel presses the springs by the aid of the drive portion when rotating, and the springs press the protrusions on the drive plate to further drive the secondary flywheel to rotate.

The spring is normally compressed by the drive in the main flywheel and transmits torque in the contracted state. That is, according to the change of the torque transmitted from the main flywheel, the vibration damping effect is achieved by increasing and decreasing the contraction amount of the spring, and the noise is reduced.

However, in the damper flywheel of the prior art, the transmission impact of the engine is reduced by using the spring buffer between the main flywheel and the secondary flywheel, and the spring is compressed and contracted by the supporting of the driving part fixed with the main flywheel, but when the engine generates excessive torque instantaneously, the torque cannot be sufficiently attenuated by the spring supported only by the driving part fixed in the main flywheel, and the impact is directly transmitted to the transmission, so that the discomfort of a driver is brought.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two quality flywheels of shock attenuation is equipped with friction portion in the drive plate, when the moment of torsion took place for the engine, friction portion can prevent to strike and convey for the derailleur

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a shock attenuation dual mass flywheel, includes main flywheel, secondary flywheel, damping part and drive plate, and wherein main flywheel is connected with engine crankshaft, and secondary flywheel installs on the clutch input shaft, is equipped with damping part and drive plate between main flywheel and the secondary flywheel, just the drive plate links firmly with secondary flywheel, the drive plate includes main drive plate, auxiliary drive board and friction portion, wherein main drive plate and secondary flywheel contact, the main drive plate outside is equipped with the bulge that offsets with the spring in the damping part, links firmly with secondary flywheel after auxiliary drive plate embedding main drive plate passes main drive plate through the mounting, be equipped with friction portion between main drive plate and the auxiliary drive plate.

The friction part comprises a first elastic piece and a second elastic piece, the second elastic piece is arranged on the inner side of the first elastic piece, a long guide hole for the fixing piece to pass through is formed in the main driving plate, the fixing piece moves along the corresponding long guide hole, and the first elastic piece and the second elastic piece are driven to move through the fixing piece.

The first elastic piece and the second elastic piece are both annular, a plurality of first protruding elastic pieces are arranged on the inner side of the first elastic piece along the circumferential direction, and a plurality of second protruding elastic pieces are arranged on the outer side of the second elastic piece along the circumferential direction.

The first elastic piece is arranged on the outer side of the fixing piece, and the second elastic piece is arranged on the inner side of the fixing piece.

The distance between the inner side of the first elastic piece and the outer side of the second elastic piece is larger than the diameter of the fixing piece.

The utility model discloses an advantage does with positive effect:

the utility model discloses a drive plate includes main drive board, auxiliary drive board and locates friction portion between main drive board and the auxiliary drive board, friction portion is including the first elastic component that is equipped with first protrusion flexure strip and the second elastic component that is equipped with second protrusion flexure strip, when the engine took place the moment of torsion in the twinkling of an eye, the second protrusion flexure strip elasticity on first protrusion flexure strip on the moment of torsion messenger first elastic component and the second elastic component increased, and elasticity acts on main drive board and makes main drive board and secondary flywheel take place the friction to the decay is strikeed, prevents that the moment of torsion from directly passing the derailleur.

Drawings

Figure 1 is a front view of the present invention,

figure 2 is a partial cross-sectional view of the present invention,

fig. 3 is an exploded view of the driving plate with friction portion according to the present invention.

Wherein 120 is a bearing, 140 is a main flywheel cover, 200 is a main flywheel, 210 is a hub, 220 is a curved surface, 230 is a gear ring, 300 is a secondary flywheel, 310 is a fixed part, 400 is a damping part, 410 is a spring, 420 is a spring guide rail, 500 is a drive plate, 510 is a main drive plate, 520 is an auxiliary drive plate, 530 is a friction part, 531 is a first elastic part, 532 is a second elastic part, and 533 is a long guide hole.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present invention includes a main flywheel 200, a secondary flywheel 300, a damper unit 400, and a drive plate 500.

As shown in fig. 2, a hub 210 for mounting a crankshaft is provided in the middle of a main flywheel 200, a curved surface 220 is provided on the outer side of the main flywheel 200 for increasing inertia, a gear ring 230 is provided on the outer side of the curved surface 220, the gear ring 230 can be engaged with a gear on the output shaft of a starter motor,

as shown in fig. 2, the secondary flywheel 300 is rotatably disposed on the hub 210, and a bearing 120 is disposed between the secondary flywheel 300 and the hub 210, so as to realize relative rotation between the secondary flywheel 300 and the main flywheel 200.

As shown in fig. 1, a damper 400 for buffering and damping is disposed between the main flywheel 200 and the secondary flywheel 300, the damper 400 is disposed inside the contour of the main flywheel 200, that is, inside the curved surface 220 and arranged along the circumferential direction, the damper 400 includes a spring 410 and a spring guide 420, the spring guide 420 is disposed inside the curved surface 220, the spring 410 is disposed in the spring guide 420, the spring has a double-spring structure, and a small-diameter inner spring is disposed inside a large-diameter outer spring, as shown in fig. 2, a main flywheel cover 140 is disposed at the rear side of the main flywheel 200 for limiting the displacement of the spring 410 and the spring guide 420 and preventing the spring 410 from being detached from the spring, and a driving part for pressing the spring 410 is disposed in the main flywheel 200.

As shown in fig. 1 to 2, the secondary flywheel 300 is fixedly connected to the driving plate 500 by a plurality of fixing members 310 such as bolts or rivets.

The driving plate 500 is a member for supporting the end of the spring 410 in the damper portion 400 for a damping action, and as shown in fig. 3, the driving plate 500 includes a main driving plate 510, an auxiliary driving plate 520, and a friction portion 530, wherein the main driving plate 510 is in contact with the inner side of the secondary flywheel 300, the main driving plate 510 is in a ring shape, a protrusion 511 for pressing the spring 410 is provided on the outer side of the main driving plate 510, and the protrusion 511 is generally provided one on each of the upper side and the lower side, and 2 in total. The spring 410 is pressed by the driving part in the main flywheel 200, and the protrusion 511 on the main driving plate 510 is pressed by the spring 410, so that the whole driving plate 500 is driven to rotate.

As shown in fig. 3, the auxiliary drive plate 520 is mounted on the main drive plate 510 at a side away from the secondary flywheel 300, and is also in a ring shape, and the auxiliary drive plate 520 is provided with a fixing hole 521 for the fixing member 310 to pass through.

As shown in fig. 3, the auxiliary drive plate 520 is smaller in shape than the main drive plate 510 and embedded in the main drive plate 510, and is fixed to the secondary flywheel together with the main drive plate 510, and the outer circumferential surface of the auxiliary drive plate 520 can be fitted to the mounting surface 513 inside the housing of the main drive plate 510.

As shown in fig. 3, a friction portion 530 is disposed between the main drive plate 510 and the auxiliary drive plate 520, the friction portion 530 includes a first elastic member 531 and a second elastic member 532, the second elastic member 532 is disposed inside the first elastic member 531, a number of arc-shaped long guide holes 533 are disposed on the main drive plate 510 at equal intervals along the circumferential direction, the auxiliary drive plate 520 passes through the fixing holes 521 via the fixing members 310 and then is fixedly connected to the secondary flywheel 300, the first elastic member 531, the second elastic member 532 and the main drive plate 510 are pressed and fixed, and the fixing members 310 pass through the corresponding long guide holes 533, so that the fixing members 310 can move along the long guide holes 533, the first elastic member 531 is disposed outside the fixing members 310, the second elastic member 532 is disposed inside the fixing members 310, and the fixing members 310 move to drive the first elastic member 531 and the second elastic member 532 to move.

As shown in fig. 3, the first elastic member 531 is ring-shaped, and a plurality of first protruding elastic pieces 531a are provided at an inner side thereof along a circumferential direction, the first protruding elastic pieces 531a are tilted at a certain angle, and when the first elastic member 531 comes into contact with one side of the main driving plate 510 and the auxiliary driving plate 520, the first protruding elastic pieces 531a of the contact portion generate a reaction elastic force.

As shown in fig. 3, the second elastic member 532 is annular, and a plurality of second protruding elastic pieces 532a are disposed on the outer side of the second elastic member 532 along the circumferential direction, the second protruding elastic pieces 532a also have a certain angle of tilting, and when the second elastic member 532 contacts with one side of the main driving plate 510 or the auxiliary driving plate 520, the second protruding elastic pieces 532a of the contacting portion generate a reaction elastic force.

As shown in fig. 3, the second elastic member 532 is disposed inside the first elastic member 531, and the fixing member 310 is disposed between the first elastic member 531 and the second elastic member 532, and in order to ensure that the fixing member 310 moves along the long guide hole 533, a distance between the first protruding elastic piece 531a of the first elastic member 531 and the second protruding elastic piece 532a of the second elastic member 532 is greater than an outer diameter of the fixing member 310. Normally, the first elastic member 531 and the second elastic member 532 are not in complete contact with the main drive plate 510 and the auxiliary drive plate 520, the first protruding elastic piece 531a and the second protruding elastic piece 532a do not generate obvious elastic force, when the engine generates excessive torque instantly, the excessive torque causes the first elastic member 531 and the second elastic member 532 to contact with one side of the main drive plate 510 and the auxiliary drive plate 520, and the first protruding elastic piece 531a and the second protruding elastic piece 532a of the contact portion generate reaction elastic force to act on the main drive plate 510, so that friction occurs between the main drive plate 510 and the secondary flywheel 300.

The utility model discloses a theory of operation does:

installation the utility model discloses a vehicle starts the back, steps on with higher speed when putting into gear to the shelves of traveling, and the engine takes place the output that explodes, and it is fast that it compares secondary flywheel 300 rotational speed through the direct rotational speed that gives main flywheel 200 of bent axle, therefore the faster speed of main flywheel 200 leads to exerting pressure the spring 410 in the damper 400 to exert pressure through spring 410 for the bulge 511 of drive plate 500, make drive plate 500 drive secondary flywheel 300 rotatory on hub 210, spring 410 utilizes the elastic attenuation buffering of self can realize stably accelerating.

When the engine is compressed, the rotation speed of the main flywheel 200 is lower than that of the secondary flywheel 300 due to the reduction of power, the spring 410 is reversely pressed against the main flywheel 200 by the torque of the secondary flywheel 300, and the impact of the secondary flywheel 300 is damped by the damping of the spring 410, so that stable deceleration can be realized.

When the engine generates the excessive torque instantly, the torque is transmitted to the main flywheel 200, the main flywheel 200 presses the protrusion 511 on the main drive plate 510 in the drive plate 500 through the spring 410, and the excessive torque causes the first elastic piece 531 and the second elastic piece 532 to contact with one side of the main drive plate 510 and the auxiliary drive plate 520, the elastic force of the first protrusion elastic piece 531a on the first elastic piece 531 and the second protrusion elastic piece 532a on the second elastic piece 532 is increased, and the elastic force acts on the main drive plate 510 and causes the main drive plate 510 and the secondary flywheel 300 to generate friction, thereby attenuating the impact and preventing the excessive torque from directly passing through the transmission.

Claims

1. The utility model provides a shock attenuation dual mass flywheel, includes main flywheel, secondary flywheel, damper portion and drive plate, and wherein main flywheel is connected with engine crankshaft, and secondary flywheel installs on the clutch input shaft, is equipped with damper portion and drive plate between main flywheel and the secondary flywheel, just the drive plate links firmly its characterized in that with secondary flywheel: the driving plate (500) comprises a main driving plate (510), an auxiliary driving plate (520) and a friction part (530), wherein the main driving plate (510) is in contact with the secondary flywheel (300), a protruding part (511) which is abutted against a spring (410) in the damping part (400) is arranged on the outer side of the main driving plate (510), the auxiliary driving plate (520) is embedded into the main driving plate (510) and fixedly connected with the secondary flywheel (300) after penetrating through the main driving plate (510) through a fixing part (310), and the friction part (530) is arranged between the main driving plate (510) and the auxiliary driving plate (520).

2. A damped dual mass flywheel according to claim 1 wherein: the friction part (530) comprises a first elastic piece (531) and a second elastic piece (532), the second elastic piece (532) is arranged on the inner side of the first elastic piece (531), a long guide hole (533) for the fixing piece (310) to pass through is formed in the main driving plate (510), the fixing piece (310) moves along the corresponding long guide hole (533), and the first elastic piece (531) and the second elastic piece (532) are driven to move through the fixing piece (310).

3. A damped dual mass flywheel according to claim 2 wherein: the first elastic piece (531) and the second elastic piece (532) are both annular, a plurality of first protruding elastic pieces (531a) are arranged on the inner side of the first elastic piece (531) along the circumferential direction, and a plurality of second protruding elastic pieces (532a) are arranged on the outer side of the second elastic piece (532) along the circumferential direction.

4. A damped dual mass flywheel according to claim 2 or 3 wherein: the first elastic piece (531) is arranged on the outer side of the fixing piece (310), and the second elastic piece (532) is arranged on the inner side of the fixing piece (310).

5. A damped dual mass flywheel according to claim 2 or 3 wherein: the distance between the inner side of the first elastic member (531) and the outer side of the second elastic member (532) is larger than the diameter of the fixing member (310).