CN101608674A - The diaphragm spring that is used for normally open clutch - Google Patents
The diaphragm spring that is used for normally open clutch Download PDFInfo
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- CN101608674A CN101608674A CNA2009100552167A CN200910055216A CN101608674A CN 101608674 A CN101608674 A CN 101608674A CN A2009100552167 A CNA2009100552167 A CN A2009100552167A CN 200910055216 A CN200910055216 A CN 200910055216A CN 101608674 A CN101608674 A CN 101608674A
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- spring
- diaphragm spring
- normally open
- finger
- open clutch
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Abstract
A kind of diaphragm spring that is used for normally open clutch of automatic clutch for car technical field, this diaphragm spring is a disc-shaped structure, comprise: dish spring part, joint finger are divided and stress relief hole, wherein: the joint finger that several structures are identical is divided with center, diaphragm spring center of circle symmetry, engage the outer end of dividing the finger and be connected, on dish spring part, along the circumferential direction be provided with some stress relief holes with dish spring partial fixing.The present invention has not only kept it and can reduce spring-back force and have this advantage of zero stiffness characteristic at the friction disc wear stroke, also overcome excessive this problem of its precompression, thereby the resiliently deformable of thrust plate and case is reduced, and the startup work of actuator becomes easily and the load of being born in actuator's working procedure is obviously reduced.
Description
Technical field
What the present invention relates to is the clutch device structure spare in a kind of AE field, specifically is a kind of diaphragm spring that is used for normally open clutch.
Background technique
According to the arrangement of present diaphragm spring in clutch, clutch can be divided into Normally closed type and two types open in usual, its classification foundation be actuator when not working platen be pressing friction sheet or contact friction sheet not.Though actuator did not have the advantage of energy consumption when the Normally closed type clutch had automobile running, when clutch engages and actuator can't proper functioning the time fully, it is conspicuous that clutch can't in time separate this shortcoming by driver's requirement.This has not only strengthened the parking difficulty, has also increased traffic safety hidden danger.Normally open clutch can effectively address this problem, and its assembling schematic representation is referring to figure, but the energy storage that resets of its dish spring part institute is also unsuitable excessive, in order to avoid the unnecessary work load of increase actuator.In addition, divide the thrust load of directly bearing the clutch bearing effect, should be controlled at and do not influence in control accuracy and the permissible range that clutch thoroughly separates so engage the resiliently deformable of dividing the finger owing to engage the finger.
Because it is definite constant that the optimum of clutch engages rule, and the wearing and tearing of friction plate can cause spring small end load obviously fluctuation to occur, thereby makes the obvious off-design requirement of control effect.For this reason, must make control system of actuating mechanism adjust the load that engage bearings acts on the diaphragm spring small end in real time according to the information relevant that sensor obtained with the friction disc wear amount.In order to simplify the design of control system of actuating mechanism, the inside moment of flexure in footpath that the dish spring partly produced when the little end movement of spring was changed in the wearing and tearing stroke of friction plate changes hardly.
Based on above-mentioned analysis, the physical dimension that must design dish spring part and joint finger branch respectively is to obtain the usability of comprehensive optimum.Find by literature search, divide aspect the flexural rigidity improve separating the finger, F.P. FR5875, name is called: the compound film sheet spring, this technology readme is for " the auxiliary diaphragm spring that similar external diameter of shape is less is superimposed to be fixed together by supporting rivet on the convex surface of main film spring and with two springs; diaphragm spring separates the finger and divides thickness to be increased, thereby rigidity is improved." though this technology can improve spring rate, owing to increased new auxiliary diaphragm spring and adopted rivet to fix, so its complex structure and working life are shorter.
British Patent No. GB2133483, name is called: the structure of punching out stiffening rib on the diaphragm spring, this technology readme is " punching out a stiffening rib radially on the diaphragm spring convex surface; stiffening rib refers to that from separation the middle part convex surface begins to be stretched over dish spring part so that effectively improve the rigidity that points to dish spring transition portion from separation; the shape of stiffening rib has three kinds of short stiffening rib, long oblique stiffening rib and long stiffening ribs, to satisfy the different demands of engineering staff to rigidity." this technology underuses and separate the material that divides the finger and carry out punching press but selected referring to that from separation the middle part carries out punching press to dish spring part outer rim.Though separate the rigidity that points to dish spring transition portion, do not improve the rigidity that whole separation finger is divided yet, and this reduces to separate the key of the resiliently deformable of dividing the finger exactly so it has improved.Because dish spring part outer rim also is stamped, so the flexural rigidity of dish spring part is strengthened, this just might make the dish spring partly produce the spring-back force big than expected value.In addition, because the spring-loaded ring that contacts with dish spring punch-out also must be made arch, so this scheme has also been brought this problem of complex process.
Aspect the flexural rigidity and film power of adjusting dish spring part, at the unalterable dish spring of general structure size, paper G.Schremmer.The Slotted Conical Disk Spring.ASME Journal ofEngineering for Industry, 1973,8,765-770 (the circular cone belleville spring of fluting.1973 8 monthly magazine 765-770 of ASMEJournal of Engineering for Industry page or leaf.) .G.Schremmer.Slotted Conical Disk Spring.Industrie-Anzeiger, 1972 (the circular cone belleville springs of fluting.Industrie-Anzeiger delivered in 1972.). proposed in dish spring inner edge this mentality of designing of slotting.According to its result of study, if adopt this mentality of designing, then groove is opened deeply more, engage under distortion at identical joint spindle to refer to that the thrust load of being born is also more little, but the rigidity of spring is also big more when Large Deflection Deformation takes place.And, can find that by analyzing if will keep the zero stiffness characteristic of spring, then the initial cone angle of its dish spring part should increase along with the increase of groove depth.Because the cone angle after the spring assembling is constant,, the initial cone angle of dish spring part also can increase so increasing the assembling precompressed angle of rear spring and engage the precompressed displacement that refers to.Though refer to that at identical joint spindle joint under distortion the thrust load of being born can reduce along with the increase of groove depth, but owing to precompressed stage joint refers to that the load of being born can increase along with the increase of its precompressed displacement, so the increase of groove depth might not mean reducing of precompression.Utilize the formula of above two pieces of fluting belleville spring deformation under load characteristics that document provided,, can determine that by calculating precompression can obviously increase along with the increase of groove depth in conjunction with engaging the leverage that the finger branch rises.Therefore, fluting design not only can increase the axial deformation of thrust plate and case, also can make actuator just need load outside the commitment in the moment of just having started working, thereby makes the actuator can't proper functioning.Therefore, in the occasion that above two specific characters can not occur, this scheme can not be used.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of diaphragm spring that is used for normally open clutch is provided, excessive to overcome the energy storage that resets with joint finger branch resiliently deformable, guarantee that the inside moment of flexure in footpath that the dish spring partly produces in the friction disc wear stroke changes hardly, effectively reduce the precompression that dish spring part is produced, thereby improve the control accuracy of actuator, prevent the not thorough phenomenon of separation, reduce the axial deformation of thrust plate and case and reduce the load of being born when actuator starts working.
The present invention is achieved by the following technical solutions, the diaphragm spring that the present invention relates to is a disc-shaped structure, comprise: dish spring part, joint finger are divided and stress relief hole, wherein: the joint finger that several structures are identical is divided with center, diaphragm spring center of circle symmetry, engage the outer end of dividing the finger and be connected, on dish spring part, along the circumferential direction be provided with some stress relief holes with dish spring partial fixing.
The position of described stress relief hole is corresponding one by one with the position that engages the finger branch.
The side section shape of described dish spring part is a rectangle, and the thickness of this dish spring part is 2.0～2.4mm.
Described joint finger is divided into s shape structure, and its section is a concave shape, and this joint finger branch comprises engaging and refer to and the punching press strengthening groove that wherein: the punching press strengthening groove is positioned at and engages the middle part that refers to.
Described punching press strengthening groove is interior outer double-layer structure, and wherein: the interior profile radius of punching press strengthening groove is 0.3～0.7mm, and the external frame radius is 2.5～2.9mm, and the degree of depth of this punching press strengthening groove is 3.0～3.4mm.
The radius of described stress relief hole is 1.5～4.5mm.
Described diaphragm spring is made by silicon-manganese spring steel 60Si2MnA and chrome alum spring steel 50CrVA.
The present invention can reduce spring-back force and have this advantage of zero stiffness characteristic at the friction disc wear stroke by not only kept it in the perforate of dish spring part, also overcome excessive this problem of its precompression, thereby the resiliently deformable of thrust plate and case is reduced, and the startup work of actuator becomes easily and the load of being born in actuator's working procedure is obviously reduced.After whole joint finger branch carried out punching press, make the moment of inertia in its cross section be able to obvious increase, thus better flexural rigidity can be obtained, thus improve the control accuracy of actuator and prevent the halfway generation of clutch separation.Because single clutch open in usual is identical with the working principle and the designing requirement of arbitrary clutch of double clutch open in usual, so the present invention can be used widely on these two kinds of clutches.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is embodiment's scheme of installation.
Fig. 3 is for engaging finger separation structure schematic representation;
Wherein: a divides front view for engaging the finger; B is an A-A face sectional view, and c is a B-B face sectional view, and d is a C-C face sectional view.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, 2, the described diaphragm spring of present embodiment is a disc-shaped structure, comprise: dish spring part 1, engage the finger and divide 2 and stress relief hole 3, wherein: the joint finger that several structures are identical divides 2 with the diaphragm spring center of circle 4 center symmetries, engage the finger and divide 2 outer end to fixedly connected, on dish spring part 1, along the circumferential direction be provided with some stress relief holes 3 with dish spring part 1.
The position of described stress relief hole 3 with engage the finger and divide 2 position corresponding one by one.
The side section shape of described dish spring part 1 is a rectangle, and the thickness of this dish spring part 1 is 2.2mm.
As shown in Figure 3, described joint finger divides 2 for s shape structure, and its section is a concave shape, and this joints finger divides 2 to comprise engaging and refer to 5 and punching press strengthening groove 6, and wherein: punching press strengthening groove 6 is positioned at joint and refers to 5 middle part.
Described punching press strengthening groove 6 is interior outer double-layer structure, and wherein: interior profile 7 radiuses of punching press strengthening groove 6 are 0.5mm, and external frame 8 radiuses are 2.7mm, and the degree of depth of this punching press strengthening groove is 3.2mm.
The radius of described stress relief hole 3 is 3mm.
Described diaphragm spring is made by silicon-manganese spring steel 60Si2MnA and chrome alum spring steel 50CrVA.
As shown in Figure 2, the joint finger of diaphragm spring divides 1 to contact with platen 9, and the embossed locations 12 that processes on the thrust plate of installing on the case 10 11 and the case 10 has played the effect of axial thrust diaphragm spring.The precompressed of diaphragm spring concerns by the position between the embossed locations 12 on design thrust plate 11 and the case 10 and realizes.
When clutch did not engage, 14 on friction plate 13 and platen 9 and flywheel had certain interval.This moment, the left side of dish spring part 1 of diaphragm spring was bearing on the thrust plate 11, engaged the finger and divided 2 right side to be bearing on the case 10 to guarantee that dish spring part 1 can be by designing requirement by the certain angle of precompressed.Overcoming the idle stroke stage, engage bearings under the promotion of actuator vertically the pressuring film plate spring engage the finger and divide 2 small end, platen 9 is axially moving under the effect of lever till the gap of 14 on friction plate 13 and platen 9 and flywheel is overcome.Because dish spring part 1 is supported on thrust plate 11 and the case 10 all the time, so whole diaphragm spring will rotate till platen 9 contact friction sheets 13 around supporting point.This output work of actuator mainly is converted into the elastic potential energy of dish spring part 1 in stage, and along with constantly reducing of its cone angle, its resiliently deformable and elastic potential energy can constantly increase.At zygophase, engage bearings continue to promote diaphragm spring, platen 9 pressing friction sheet 13 gradually under the promotion of diaphragm spring.Because the supporting and the existence of platen 9, diaphragm spring no longer rotates, and elastic deformation amount and elastic potential energy that therefore should stage dish spring part 1 remain unchanged.Along with the increase of friction plate 13 wear extenies, the elastic deformation amount of the little end movement of correspondence, dish spring part 1 and elastic potential energy also increased thereupon after diaphragm spring stopped operating, but the changing condition of its inside moment of flexure in footpath depends on the structural design of dish spring part 1.Because the value that this stage platen 9 acts on the normal load on the friction plate 13 depends on engage bearings and acts on the load of diaphragm spring small end and the inside moment of flexure in footpath that dish spring part 1 produces, and the optimum of clutch joint rule is definite constant, institute thinks and avoids spring 4 small end load to occur should making the structure of dish spring part 1 guarantee that the inside moment of flexure in footpath of its generation does not change with the variation of wear extent than great fluctuation process and simplified control system design.
Claims (7)
1, a kind of diaphragm spring that is used for normally open clutch, this diaphragm spring is a disc-shaped structure, it is characterized in that, comprise: dish spring part, joint finger are divided and stress relief hole, wherein: the joint finger that several structures are identical is divided with center, diaphragm spring center of circle symmetry, engage the outer end of dividing the finger and be connected, on dish spring part, along the circumferential direction be provided with some stress relief holes with dish spring partial fixing.
2, the diaphragm spring that is used for normally open clutch according to claim 1 is characterized in that, the position of described stress relief hole is corresponding one by one with the position that engages the finger branch.
3, the diaphragm spring that is used for normally open clutch according to claim 1 is characterized in that, the side section shape of described dish spring part is a rectangle, and the thickness of this dish spring part is 2.0～2.4mm.
4, the diaphragm spring that is used for normally open clutch according to claim 1, it is characterized in that described joint finger is divided into s shape structure, its section is a concave shape, this joint finger branch comprises engaging and refers to and the punching press strengthening groove that wherein: the punching press strengthening groove is positioned at and engages the middle part that refers to.
5, the diaphragm spring that is used for normally open clutch according to claim 1, it is characterized in that, described punching press strengthening groove is interior outer double-layer structure, wherein: the interior profile radius of punching press strengthening groove is 0.3～0.7mm, the external frame radius is 2.5～2.9mm, and the degree of depth of this punching press strengthening groove is 3.0～3.4mm.
6, the diaphragm spring that is used for normally open clutch according to claim 1 is characterized in that, the radius of described stress relief hole is 1.5～4.5mm.
7, the diaphragm spring that is used for normally open clutch according to claim 1 is characterized in that, described diaphragm spring is made by silicon-manganese spring steel 60Si2MnA and chrome alum spring steel 50CrVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100552167A CN101608674A (en) | 2009-07-23 | 2009-07-23 | The diaphragm spring that is used for normally open clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100552167A CN101608674A (en) | 2009-07-23 | 2009-07-23 | The diaphragm spring that is used for normally open clutch |
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| CN101608674A true CN101608674A (en) | 2009-12-23 |
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| CNA2009100552167A Pending CN101608674A (en) | 2009-07-23 | 2009-07-23 | The diaphragm spring that is used for normally open clutch |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359524A (en) * | 2011-08-17 | 2012-02-22 | 中国电子科技集团公司第十六研究所 | Method for changing rigidity of diaphragm spring |
| CN102562846A (en) * | 2011-12-21 | 2012-07-11 | 宁波宏协离合器有限公司 | Clutch with reinforcing-rib diaphragm |
| CN103591176A (en) * | 2013-10-30 | 2014-02-19 | 芜湖鸿耀汽车工业有限公司 | Separated finger buffering diaphragm spring of shock absorber |
| CN104870850A (en) * | 2012-11-12 | 2015-08-26 | 博格华纳公司 | Drug combinations and uses |
| CN106603000A (en) * | 2017-02-09 | 2017-04-26 | 无锡百祺电子科技有限公司 | A connector having stress release holes |
| CN106715943A (en) * | 2014-04-22 | 2017-05-24 | 爱信精机株式会社 | Clutch device |
| CN108717490A (en) * | 2018-05-17 | 2018-10-30 | 桂林电子科技大学 | A kind of new diaphragm spring Load-deformation curves computational methods |
| CN109139732A (en) * | 2018-10-26 | 2019-01-04 | 上海萨克斯动力总成部件系统有限公司 | Monomer separation refers to formula diaphragm spring |
| CN109642618A (en) * | 2016-08-31 | 2019-04-16 | Ａｔｓ株式会社 | Clutch apparatus |
| CN112815027A (en) * | 2021-02-01 | 2021-05-18 | 龙华汽配(德清)股份有限公司 | Correction method of clutch diaphragm spring |
-
2009
- 2009-07-23 CN CNA2009100552167A patent/CN101608674A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359524B (en) * | 2011-08-17 | 2013-01-16 | 中国电子科技集团公司第十六研究所 | Method for changing rigidity of diaphragm spring |
| CN102359524A (en) * | 2011-08-17 | 2012-02-22 | 中国电子科技集团公司第十六研究所 | Method for changing rigidity of diaphragm spring |
| CN102562846A (en) * | 2011-12-21 | 2012-07-11 | 宁波宏协离合器有限公司 | Clutch with reinforcing-rib diaphragm |
| CN104870850A (en) * | 2012-11-12 | 2015-08-26 | 博格华纳公司 | Drug combinations and uses |
| CN103591176A (en) * | 2013-10-30 | 2014-02-19 | 芜湖鸿耀汽车工业有限公司 | Separated finger buffering diaphragm spring of shock absorber |
| CN106715943B (en) * | 2014-04-22 | 2019-01-18 | 爱信精机株式会社 | Clutch apparatus |
| CN106715943A (en) * | 2014-04-22 | 2017-05-24 | 爱信精机株式会社 | Clutch device |
| CN109642618B (en) * | 2016-08-31 | 2020-07-10 | Ａｔｓ株式会社 | Clutch device |
| CN109642618A (en) * | 2016-08-31 | 2019-04-16 | Ａｔｓ株式会社 | Clutch apparatus |
| CN106603000B (en) * | 2017-02-09 | 2018-10-23 | 无锡百祺电子科技有限公司 | Connector with stress relief hole |
| CN106603000A (en) * | 2017-02-09 | 2017-04-26 | 无锡百祺电子科技有限公司 | A connector having stress release holes |
| CN108717490A (en) * | 2018-05-17 | 2018-10-30 | 桂林电子科技大学 | A kind of new diaphragm spring Load-deformation curves computational methods |
| CN109139732A (en) * | 2018-10-26 | 2019-01-04 | 上海萨克斯动力总成部件系统有限公司 | Monomer separation refers to formula diaphragm spring |
| CN109139732B (en) * | 2018-10-26 | 2023-09-01 | 华域动力总成部件系统(上海)有限公司 | Single body separating finger type diaphragm spring |
| CN112815027A (en) * | 2021-02-01 | 2021-05-18 | 龙华汽配(德清)股份有限公司 | Correction method of clutch diaphragm spring |
| CN112815027B (en) * | 2021-02-01 | 2022-05-17 | 龙华汽配(德清)股份有限公司 | Correction method of clutch diaphragm spring |
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Open date: 20091223 |