CN112879454A - Low separating force normally open type clutch - Google Patents

Low separating force normally open type clutch Download PDF

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Publication number
CN112879454A
CN112879454A CN202110177858.5A CN202110177858A CN112879454A CN 112879454 A CN112879454 A CN 112879454A CN 202110177858 A CN202110177858 A CN 202110177858A CN 112879454 A CN112879454 A CN 112879454A
Authority
CN
China
Prior art keywords
separation
cover
disc spring
finger
spring assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110177858.5A
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Chinese (zh)
Inventor
邱毅凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HASCO Powertrain Components Systems Shanghai Co Ltd
Original Assignee
HASCO Powertrain Components Systems Shanghai Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HASCO Powertrain Components Systems Shanghai Co Ltd filed Critical HASCO Powertrain Components Systems Shanghai Co Ltd
Priority to CN202110177858.5A priority Critical patent/CN112879454A/en
Publication of CN112879454A publication Critical patent/CN112879454A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/583—Diaphragm-springs, e.g. Belleville
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/583—Diaphragm-springs, e.g. Belleville
    • F16D13/585—Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The invention discloses a low-separating-force normally-open clutch.A diaphragm spring assembly comprises at least one disc spring, a separating finger and a separating finger rivet, wherein the separating finger is riveted with the disc spring through the separating finger rivet; the diaphragm spring assembly is provided with a positioning hole and a contact circle, the positioning hole is matched and positioned with the separation finger limiting flanging on the cover, and the separation finger limiting flanging generates prepressing deformation on the disc spring by contacting with the diaphragm spring assembly; the cover is provided with a connecting hole connected with the flywheel on the engine side; the pressure plate is riveted with the transmission belt, the transmission belt is riveted with the cover, the pressure plate supporting mountain is contacted with one side surface of the diaphragm spring assembly, the force of the actuating mechanism is amplified and transmitted to the friction surface, and the engine torque is transmitted by the friction surface. The invention has the advantages that the requirements of high-rigidity separation fingers and low-force value diaphragms are met simultaneously, higher pressing force can be generated by needing lower separation force, and the requirement of a normally open clutch on an actuating mechanism is reduced.

Description

Low separating force normally open type clutch
Technical Field
The invention relates to a normally open clutch, in particular to a normally open clutch with low separating force.
Background
The normally open type clutch is mainly applied to an automobile hybrid power assembly system, the normally open type clutch is in a disconnected state under the condition of no external force control, the torque cannot be transmitted at the moment, and when the torque of an engine needs to be transmitted, the executing mechanism can output a separating force to the normally open type clutch so that the clutch is combined to transmit the power.
The normally open clutch controls the disconnection and combination of the clutch by transmitting force to a diaphragm spring of the clutch through an actuating mechanism, a separation finger of the diaphragm spring and a disc spring are one part, and in the normally open clutch, the separation finger with higher rigidity and the disc spring with lower force value are generally needed, so that the working efficiency of the actuating mechanism can be improved, and meanwhile, the performance requirement of the actuating mechanism is reduced. The separation with higher rigidity means that thicker raw material is needed to realize the requirement of high rigidity, and the force value of the disc spring is increased due to the thicker raw material, so that a contradiction is generated. And simultaneously, the high rigidity of the separation finger and the low force value of the disc spring are met, which is a place to be improved in the application.
Disclosure of Invention
The invention aims to provide a normally open clutch with low separating force, and simultaneously meets the requirements of high rigidity of a separating finger and low force value of a disc spring.
In order to solve the above technical problem, the present invention provides a low-separating-force normally-open clutch, including:
the diaphragm spring assembly comprises at least one disc spring, a separation finger and a separation finger rivet, wherein the separation finger is riveted with the disc spring through the separation finger rivet; the diaphragm spring assembly is provided with a positioning hole and a contact circle which are arranged along the circumferential direction;
the cover is provided with a separation finger limiting flanging and a connecting hole which are arranged along the circumferential direction, the connecting hole is connected with a flywheel on the side of the engine, and the power of the engine is transmitted to the normally open clutch with low separation force;
the diaphragm spring assembly is matched and positioned with the separation finger limiting flanging on the cover through the positioning hole, one side face of the diaphragm spring assembly is in contact with the supporting edge, the other side face of the diaphragm spring assembly is in contact with the supporting ring, the supporting ring flanging connects the diaphragm spring assembly with the cover, the separation finger limiting flanging generates pre-pressing deformation on the disc spring through contact with the diaphragm spring assembly, and the actuating mechanism arranged on the side of the gearbox pushes the contact circle of the separation finger to enable the diaphragm spring assembly to do lever motion with the supporting edge and a supporting ring to form a fulcrum;
the pressure plate is provided with a pressure plate transmission belt riveting hole, a supporting mountain and a friction surface which are arranged along the circumferential direction, the pressure plate is riveted with the transmission belt through a pressure plate rivet, the transmission belt is riveted with the cover, the supporting mountain is contacted with one side surface of the diaphragm spring assembly, the force of the actuating mechanism is amplified and transmitted to the friction surface through the lever principle, and the friction surface transmits the torque of the engine to the next part.
The disc spring comprises a pre-tightening disc spring or a separating disc spring.
The first structure of the diaphragm spring assembly comprises two disc springs, namely a separation disc spring and a pre-tightening disc spring, and also comprises a separation finger and a separation finger rivet; the separation finger is riveted with the separation disc spring and the pre-tightening disc spring through a separation finger rivet, and the separation finger rivet sequentially penetrates through the separation disc spring riveting hole, the separation finger riveting hole and the pre-tightening disc spring riveting hole.
The second structure of the diaphragm spring assembly only comprises a separation disc spring, a separation finger and a separation finger rivet; the separation finger is riveted with the separation disc spring through a separation finger rivet, and the separation finger rivet sequentially penetrates through the separation disc spring riveting hole and the separation finger riveting hole. This structure is applicable to the application occasion that only needs the separation dish spring.
The third structure of the diaphragm spring assembly only comprises a pre-tightening disc spring, a separating finger and a separating finger rivet; the separation finger is riveted with the pre-tightening disc spring through a separation finger rivet, and the separation finger rivet sequentially penetrates through the pre-tightening disc spring riveting hole and the separation finger riveting hole. The structure is suitable for the application occasions only needing to pre-tighten the disc spring.
The cover is provided with balance holes arranged along the circumferential direction, and the balance holes are riveted with balance rivets to reduce the unbalance amount of the assembly.
The cover is provided with cover driving belt riveting holes arranged along the circumferential direction, the cover driving belt is riveted with the driving belt through the cover driving belt rivets, the number of a group of driving belts is larger than one, and the number of the groups of driving belts is the same as the number of the cover driving belt riveting holes.
The separation finger is provided with a reinforcing rib, a positioning hole, a separation finger riveting hole and a contact circle, and the separation finger rivet simultaneously penetrates through the disc spring riveting hole and the separation finger riveting hole.
The number of the riveting holes of the pressure plate transmission belt is the same as the number of the groups of the transmission belt.
According to the invention, through the split structure of the separation fingers and the disc springs and the connection of more than one disc spring with the separation fingers, more personalized force value characteristic control is realized.
The structure of the invention has the following excellent effects:
1) the invention meets the requirements of high-rigidity separation fingers and low-force value diaphragms at the same time, can generate larger pressing force by needing lower separation force, and reduces the requirements of the normally-open clutch on an actuating mechanism;
2) the invention realizes the function of the normally open clutch by using smaller axial space, has the characteristic of flattening the whole structure and has good rigidity of the whole structure of the clutch.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of an embodiment assembly of the present invention;
FIG. 2 is a schematic cross-sectional view of an assembly A-A according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an assembly B-B according to an embodiment of the present invention;
FIG. 4 is a schematic view of a cover according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a separation indication according to an embodiment of the present invention;
FIG. 6 is a graph illustrating a separating force curve according to an embodiment of the present invention;
description of the figures
1-covering;
101-a connection hole; 102-a balancing hole;
103-covering the driving belt riveting hole; 104-a support edge;
105-flanging the support ring; 106-separation is a limiting flanging;
2-cover rivet; 3, driving a belt;
4-platen rivet;
5-separating the disc spring;
501-separating a disc spring riveting hole;
6-a support ring;
7-separation means;
701-reinforcing ribs; 702-a positioning hole;
703-riveting the hole with a separation finger; 704-contact circle;
8-separation finger rivet;
9-pressing a plate;
901-riveting holes for driving belts of a pressure plate; 902-support hill;
903-rubbing surface;
10-pre-tightening a disc spring;
1001-pre-tightening disc spring riveting hole.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic assembly view, fig. 2 is a schematic assembly a-a cross-sectional view, fig. 3 is a schematic assembly B-B cross-sectional view, fig. 4 is a schematic assembly B-B cross-sectional view, fig. 5 is a separation indication view, and fig. 6 is a separation force curve diagram.
As shown in fig. 1 to 3, the invention provides a low-separating-force normally-open clutch, which comprises a cover 1, a cover rivet 2, a transmission belt 3, a pressure plate rivet 4, a separating disc spring 5, a supporting ring 6, a separating finger 7, a separating finger rivet 8, a pressure plate 9 and a pre-tightening disc spring 10.
As shown in fig. 4, the cover is provided with a connecting hole 101, a balance hole 102, a cover driving belt riveting hole 103, a supporting edge 104, a supporting ring flange 105 and a separating finger limiting flange 106; the connecting holes 101 arranged along the circumferential direction are connected with a flywheel on the engine side through bolts, and the power of the engine is transmitted to the normally open clutch with low separating force; the balance holes 102 arranged in the circumferential direction reduce the unbalance amount of the assembly by riveting balance rivets; the cover driving belt riveting holes 103 arranged along the circumferential direction are riveted with the driving belt 3 through the cover rivets 2, the number of a group of driving belts 3 is larger than one, and the number of the groups of the driving belts 3 is the same as that of the cover driving belt riveting holes 103.
The diaphragm spring assembly comprises a separation disc spring 5, a separation finger 7, a separation finger rivet 8 and a pre-tightening disc spring 10. As shown in fig. 5, the separating finger 7 is provided with a reinforcing rib 701, a positioning hole 702, a separating finger caulking hole 703, and a contact circle 704. The separation disc spring 5 is provided with separation disc spring riveting holes 501 arranged along the circumferential direction, the pre-tightening disc spring 10 is provided with pre-tightening disc spring riveting holes 1001 arranged along the circumferential direction, the number of the separation disc spring riveting holes 501 is the same as that of the pre-tightening disc spring riveting holes 1001, separation fingers 7 with the number equal to that of the separation disc spring riveting holes 501 are riveted with the separation disc spring 5 and the pre-tightening disc spring 10 through separation finger rivets 8, and the separation finger rivets 8 simultaneously penetrate through the separation disc spring riveting holes 501, the separation finger riveting holes 703 and the pre-tightening disc spring riveting holes 1001; the diaphragm spring assembly is provided with positioning holes 702 and contact circles 704 which are arranged along the circumferential direction.
As shown in fig. 6, the separation force curve of the separation disc spring 5 and the pre-tightening disc spring 10 used simultaneously in the embodiment of the present invention is illustrated, the ordinate is the separation force, the abscissa is the separation stroke of the actuator, the pre-tightening disc spring 10 is in a non-pre-pressing state in a state of not receiving the separation force of the actuator, the separation disc spring 5 is in a pre-pressing state, the separation disc spring force value increases from a zero position in a process of receiving the separation force of the actuator, the pre-tightening disc spring force value is at a peak of the disc spring force value due to pre-pressing, the curve of the pre-tightening disc spring force value changes smoothly, the force value of the diaphragm spring assembly is the disc spring resultant force, the disc spring resultant force is equal to the pre-tightening disc spring force value plus the separation disc spring force value, and the force value characteristic that a single disc spring cannot achieve is combined by changing the pre-tightening amount, size and other parameters of the.
The diaphragm spring assembly is matched and positioned with the separation finger limiting flanging 106 arranged in the circumferential direction on the cover 1 one by one through the positioning holes 702 arranged in the circumferential direction, one side surface of the diaphragm spring assembly is in contact with the supporting edge 104, the other side surface of the diaphragm spring assembly is in contact with the supporting ring 6, the supporting ring flanging 105 connects the diaphragm spring assembly with the cover 1, the separation finger limiting flanging 106 is in contact with the diaphragm spring assembly to enable the separation disc spring 5 and the pre-tightening disc spring 10 to generate certain pre-pressing deformation, and meanwhile, the axial size of the contact circle 704 is controlled. The actuator arranged on the transmission side pushes the contact circle 704 to lever the diaphragm spring assembly about the fulcrum formed by the bearing edge 104 and the bearing ring 6.
The pressure plate 9 is provided with pressure plate transmission belt riveting holes 904, a supporting mountain 902 and a friction surface 903, the number of the pressure plate transmission belt riveting holes 904 arranged in the circumferential direction on the pressure plate 9 is the same as the number of groups of transmission belts 3, the pressure plate transmission belt riveting holes 4 are riveted with the transmission belts 3, the supporting mountain 902 is in contact with one side surface of a diaphragm spring assembly, the force of an actuating mechanism is amplified and transmitted to the friction surface 903 through a lever principle, and the friction surface 903 transmits the torque of an engine to the next component.
In applications where only a separate disc spring is required, the diaphragm spring assembly comprises a separate disc spring 5, a separate finger 7 and a separate finger rivet 8. The separation disc spring 5 is provided with separation disc spring riveting holes 501 arranged along the circumferential direction, separation fingers 7 the number of which is equal to that of the separation disc spring riveting holes 501 are riveted with the separation disc spring 5 through separation finger rivets 8, and the separation finger rivets 8 penetrate through the separation disc spring riveting holes 501 and the separation finger riveting holes 703; the diaphragm spring assembly is provided with positioning holes 702 and contact circles 704 which are arranged along the circumferential direction. As shown in fig. 6, the separating force curve of the diaphragm spring assembly is equal to the force curve of the separating disc spring.
In applications where only a pre-tensioned disc spring is required, the diaphragm spring assembly includes a separator finger 7, a separator finger rivet 8, and a pre-tensioned disc spring 10. The pre-tightening disc spring 10 is provided with pre-tightening disc spring riveting holes 1001 which are arranged along the circumferential direction, the separation fingers 7 the number of which is equal to that of the pre-tightening disc spring riveting holes 1001 are riveted with the pre-tightening disc spring 10 through separation finger rivets 8, and the separation finger rivets 8 penetrate through the separation finger riveting holes 703 and the pre-tightening disc spring riveting holes 1001; the diaphragm spring assembly is provided with positioning holes 702 and contact circles 704 which are arranged along the circumferential direction. As shown in fig. 6, the separation force curve of the diaphragm spring assembly is now equal to the force curve of the expected disc spring.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A low-separation-force normally-open clutch comprising:
the diaphragm spring assembly comprises at least one disc spring, a separation finger and a separation finger rivet, wherein the separation finger is riveted with the disc spring through the separation finger rivet; the diaphragm spring assembly is provided with a positioning hole and a contact circle which are arranged along the circumferential direction;
the cover is provided with a separation finger limiting flanging and a connecting hole which are arranged along the circumferential direction, the connecting hole is connected with a flywheel on the side of the engine, and the power of the engine is transmitted to the normally open clutch with low separation force;
the diaphragm spring assembly is matched and positioned with the separation finger limiting flanging on the cover through the positioning hole, one side face of the diaphragm spring assembly is in contact with the supporting edge, the other side face of the diaphragm spring assembly is in contact with the supporting ring, the supporting ring flanging connects the diaphragm spring assembly with the cover, the separation finger limiting flanging generates pre-pressing deformation on the disc spring through contact with the diaphragm spring assembly, and the actuating mechanism arranged on the side of the gearbox pushes the contact circle of the separation finger to enable the diaphragm spring assembly to do lever motion with the supporting edge and a supporting ring to form a fulcrum;
the pressure plate is provided with a pressure plate transmission belt riveting hole, a supporting mountain and a friction surface which are arranged along the circumferential direction, the pressure plate is riveted with the transmission belt through a pressure plate rivet, the transmission belt is riveted with the cover, the supporting mountain is contacted with one side surface of the diaphragm spring assembly, the force of the actuating mechanism is amplified and transmitted to the friction surface through the lever principle, and the friction surface transmits the torque of the engine to the next part.
2. The low-disconnect normally-open clutch of claim 1, wherein: the cover is provided with balance holes arranged along the circumferential direction, and the balance holes are riveted with balance rivets to reduce the unbalance amount of the assembly.
3. The low-disconnect normally-open clutch of claim 1, wherein: the cover is provided with cover driving belt riveting holes arranged along the circumferential direction, the cover driving belt is riveted with the driving belt through the cover driving belt rivets, the number of a group of driving belts is larger than one, and the number of the groups of driving belts is the same as the number of the cover driving belt riveting holes.
4. The low-disconnect normally-open clutch of claim 1, wherein: the separation finger is provided with a reinforcing rib, a positioning hole, a separation finger riveting hole and a contact circle, and the separation finger rivet simultaneously penetrates through the disc spring riveting hole and the separation finger riveting hole.
5. The low-disconnect normally-open clutch of claim 1, wherein: the number of the riveting holes of the pressure plate transmission belt is the same as the number of the groups of the transmission belt.
CN202110177858.5A 2021-02-09 2021-02-09 Low separating force normally open type clutch Pending CN112879454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110177858.5A CN112879454A (en) 2021-02-09 2021-02-09 Low separating force normally open type clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110177858.5A CN112879454A (en) 2021-02-09 2021-02-09 Low separating force normally open type clutch

Publications (1)

Publication Number Publication Date
CN112879454A true CN112879454A (en) 2021-06-01

Family

ID=76056235

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110177858.5A Pending CN112879454A (en) 2021-02-09 2021-02-09 Low separating force normally open type clutch

Country Status (1)

Country Link
CN (1) CN112879454A (en)

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