CN112392870A

CN112392870A - Automatic clutch

Info

Publication number: CN112392870A
Application number: CN201910755973.9A
Authority: CN
Inventors: 陈红旗; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-23

Abstract

An automatic clutch is started by centrifugal force, and the connection and disconnection of an engine and a gearbox are realized by a friction transmission mode.

Description

Automatic clutch

Technical Field

The present invention relates to an automatic clutch, and more particularly to an automatic clutch having a large torque transmission capacity.

Background

The clutch is used as a part for connecting the engine and the gearbox, plays a role in connecting and disconnecting the engine and the gearbox, and the current mainstream clutch used on the automobile is a friction clutch which is widely adopted due to simple structure and high transmission efficiency, but the clutch pedal is required to be operated to realize the separation and the combination of the engine and the gearbox due to the characteristics of the clutch, so that the frequent operation of the clutch pedal is a very laborious thing for a driver; with the wide use of the hydraulic torque converter, the physical labor intensity of a driver is greatly reduced, but the defects of the hydraulic torque converter in the aspects of transmitting large torque and transmission efficiency limit the application range of the hydraulic torque converter.

Disclosure of Invention

In order to solve the contradiction between the transmission efficiency and the operation convenience of the clutch, the invention provides the automatic clutch, the automatic clutch is started by centrifugal force, and the connection and disconnection of the engine and the gearbox are realized by a friction transmission mode, and the automatic clutch has the torque transmission capacity and the transmission efficiency which are equivalent to those of the traditional friction clutch while having the operation simplicity.

An automatic clutch comprises a driving unit and a driven unit, wherein the driving unit consists of an input shaft, an inner gear shell, a disc, a sliding block, a spring, a taper sleeve, an outer gear steel sheet and a gland;

one end of an input shaft of the driving unit is connected with an engine flywheel, a gear shaft at the other end is in contact with the inner end of a sliding block and pushes the sliding block to move along the radial direction of a disc through the contact of a gear surface and the sliding block, the disc is provided with a plurality of grooves, the sliding block is embedded in the grooves of the disc and is pressed or pressed on the disc through springs at two sides, the disc is arranged on an inner gear shell through bolts, the inner end of the sliding block is in contact with the gear surface of the input shaft, the outer end of the sliding block is an inclined surface and is matched with a conical surface of a taper sleeve, the taper sleeve is arranged in the inner gear shell in a floating mode and can move along the axial direction, the conical surface end of the taper sleeve is adjacent to the disc, the planar end of the taper sleeve is adjacent to an outer tooth steel sheet, the outer tooth steel sheet is meshed with the inner gear shell through teeth and can move, and the inner tooth friction plate of the driven unit and the outer tooth steel plate of the driving unit are stacked in a cavity formed by the inner tooth shell and the gland.

After the engine is started, when the rotating speed of the engine is lower than the starting rotating speed of the clutch, the sliding block is tightly pressed on the tooth surface of the input shaft under the action of the elastic force of the spring, at the moment, the input shaft pushes the sliding block and the disc through the tooth surface to drive the driving unit to rotate, when the rotating speed of the engine is higher than the starting rotating speed of the clutch, the resultant force of the pushing force of the sliding block pushed by the tooth surface of the input shaft and the centrifugal force generated by the sliding block rotating along with the disc overcomes the elastic force of the springs at two sides to push the sliding block to move outwards along the groove of the disc, the inclined surface of the sliding block is attached to the conical surface of the conical sleeve and pushes the conical sleeve; when the engine rotates to a speed lower than the starting speed of the clutch, the sliding block overcomes the centrifugal force to move inwards along the groove of the disc under the action of the elastic force of the spring to disconnect the combination with the taper sleeve, at the moment, the external tooth steel sheet of the driving unit is disconnected with the internal tooth friction sheet of the driven unit, the driving unit keeps rotating, the driven unit does not rotate, and the engine is disconnected with the gearbox.

The present specification introduces in detail the more important features of the present invention in order to make the detailed description of these features better understood. The invention provides only a technical scheme that an input shaft provides a radial thrust to a sliding block through a tooth surface, the sliding block is pushed to move outwards and is pressed on a taper sleeve through the contact of the sliding block and an inclined surface of the taper sleeve, the friction force of an external tooth steel sheet and an internal tooth friction sheet is increased, so that the connection between an engine and a gearbox is realized, the transmission of larger torque is realized, and meanwhile, the combination and the disconnection between the engine and the gearbox are realized through the centrifugal force action of the sliding block, and the operation is convenient; the invention is not limited in its application to the details of construction and the components set forth in the following description, but may be embodied in other forms and embodiments. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. At the same time, it should be appreciated by those skilled in the art that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is therefore intended that the following claims be interpreted as including all equivalents as fall within the true spirit and scope of the invention.

The automatic clutch has the advantages that the automatic clutch is combined or disconnected depending on the centrifugal force, the clutch pedal does not need to be loosened and stepped, the operation is simple and convenient, and the labor intensity of a driver is reduced; the automatic clutch pushes the sliding block to move through the tooth surface of the input shaft, and the axial thrust is increased through the combination of the inclined surface of the sliding block and the conical surface of the taper sleeve, so that the relative sliding between the driving unit and the driven unit is reduced, the consumption of fuel oil is reduced while large torque can be transmitted, and the automatic clutch has a wide application range, and therefore has high popularization value.

Drawings

FIG. 1 is a view of an automatic clutch

FIG. 2 is a schematic diagram of an automatic clutch

FIG. 3 is a cross-sectional view of an end face of an automatic clutch

In figure 1, 1 is input shaft, 2 is inner gear shell, 8 is gland, 9 is output gear shaft

In figure 2, 1 is an input shaft, 2 is an inner gear shell, 3 is a circular disc, 4 is a sliding block, 5 is a taper sleeve, 6 is an outer tooth steel sheet, 7 is an inner tooth friction plate, 8 is a gland and 9 is an output gear shaft

In fig. 3, 1 is input shaft, 2 is inner gear shell, 3 is disk, 4 is slide block, 10 is spring.

Detailed Description

After an engine is started, when the rotating speed of the engine is lower than the starting rotating speed of a clutch, a sliding block 4 is tightly pressed on a tooth surface of an input shaft 1 under the action of elastic force of a spring 10, the input shaft 1 pushes a disc 3 to drive an inner gear shell 2 to rotate through the combination of the tooth surface and the sliding block 4, when the rotating speed of the engine is higher than the starting rotating speed of the clutch, the resultant force of thrust applied to the sliding block 4 by the tooth surface and centrifugal force generated by the rotation of the sliding block 4 overcomes the elastic force of the spring 10 to push the sliding block 4 to move outwards along a groove of the disc 3, the sliding block 4 is attached to a taper sleeve 5 through an inclined surface and pushes a taper sleeve 5 to tightly press an outer tooth steel sheet 6 and an inner tooth friction sheet 7, and at the moment; when the rotating speed of the engine is reduced to be lower than the starting rotating speed of the clutch, the spring 10 overcomes the resultant force of the centrifugal force of the sliding block 4 and the thrust transmitted to the sliding block 4 by the input shaft 1 through the tooth surface, the sliding block 4 is pushed to move inwards along the groove of the disc 3, the sliding block 4 is separated from the taper sleeve 5, the external tooth steel sheet 6 is gradually separated from the internal tooth friction sheet 7, and the engine is separated from the gearbox.

Although the present specification describes various modifications and improvements of the automatic clutch of the present invention, it will be understood that the various forms of the invention described herein may be selected or modified depending on the application, and that the various features and forms of the invention described herein utilize the input shaft to provide a radial thrust to the slide by means of the teeth, to urge the slide outwardly and to press the slide against the taper sleeve by means of the inclined surface contact of the slide with the taper sleeve, to increase the frictional force of the outer teeth steel plates and the inner teeth friction plates, to effect connection of the engine to the transmission and to effect transmission of a large torque, and to apply the centrifugal force of the slide to effect connection and disconnection of the engine to the transmission, for ease of operation, it being understood that while several modified forms of the invention have been set forth herein, the above and other various modifications and combinations can be made in the construction and arrangement of the components and in the apparatus described herein, in accordance with the appended claims The spirit of the invention is defined by the claims and their equivalents.

Claims

1. An automatic clutch comprises a driving unit and a driven unit, wherein the driving unit consists of an input shaft, an inner gear shell, a disc, a sliding block, a spring, a taper sleeve, an outer gear steel sheet and a gland, and the driven unit consists of an inner gear friction sheet and an output gear shaft.

2. One end of an input shaft of an automatic clutch driving unit is connected with an engine flywheel, and a gear shaft at the other end of the input shaft is in contact with the inner end of a sliding block and pushes the sliding block to move along the radial direction of a disk through the contact of a gear surface and the sliding block.

3. The automatic clutch is characterized in that the automatic clutch disc is provided with a plurality of grooves, a sliding block is embedded in the grooves of the disc and is pressed tightly or tightly on the disc through springs on two sides, and the disc is installed on an inner gear shell through bolts.

4. The inner end of a sliding block of the automatic clutch is in contact with the tooth surface of an input shaft, and the outer end of the sliding block is an inclined surface which is matched with the conical surface of a taper sleeve.

5. The automatic clutch is characterized in that the automatic clutch taper sleeve is arranged in the inner gear shell in a floating mode and can move along the axial direction, the conical surface end of the taper sleeve is adjacent to the disc, and the plane end of the taper sleeve is adjacent to the outer tooth steel sheet.

6. An automatic clutch, the steel sheet of external tooth of said automatic clutch is engaged with internal tooth shell through the tooth, and can move axially along the internal tooth shell.

7. An internal tooth friction plate of a driven unit of the automatic clutch is in meshed connection with an output gear shaft through teeth.

8. The automatic clutch is characterized in that an inner tooth friction plate of the automatic clutch is combined with or disconnected from an outer tooth steel sheet through an end face, and the inner tooth friction plate of a driven unit and the outer tooth steel sheet of a driving unit are stacked in a cavity formed by an inner tooth shell and a gland.

9. When the rotating speed of an engine is lower than the starting rotating speed of the clutch, a sliding block is pressed on a tooth surface of an input shaft under the action of the elastic force of a spring, and at the moment, the input shaft pushes the sliding block and a disc to drive a driving unit to rotate through the tooth surface.

10. When the rotating speed of an engine is higher than the starting rotating speed of the clutch, the resultant force of thrust of a sliding block pushed by the tooth surface of an input shaft and centrifugal force generated by the sliding block rotating along with a circular disc overcomes the elastic force of springs on two sides to push the sliding block to move outwards along a circular disc groove, the inclined surface of the sliding block is attached to the conical surface of a taper sleeve and pushes the taper sleeve to compress an external tooth steel sheet and an internal tooth friction sheet, and at the moment, a driving unit and a driven unit are combined with the engine and are connected with a gearbox.

11. When the engine rotates to a speed lower than the starting speed of the clutch, the sliding block moves inwards along the groove of the disc against centrifugal force under the action of the elastic force of the spring to disconnect the connection with the taper sleeve, at the moment, the external tooth steel sheet of the driving unit is disconnected with the internal tooth friction sheet of the driven unit, the driving unit keeps rotating, the driven unit does not rotate, and the engine is disconnected with the gearbox.