CN101529109A

CN101529109A - Clutch friction disk

Info

Publication number: CN101529109A
Application number: CNA200780040285XA
Authority: CN
Inventors: P·沃尔特; P·莫罗; L·阿达姆克扎克; J-J·沙特拉斯
Original assignee: Valeo Materiaux de Friction SAS
Current assignee: Valeo Materiaux de Friction SAS
Priority date: 2006-10-30
Filing date: 2007-10-30
Publication date: 2009-09-09
Also published as: MX2009004795A; EP2089635A2; BRPI0717792A2; KR20090074065A; FR2907864A1; WO2008053126A2; WO2008053126A3

Abstract

The present invention discloses the piece has rectangular tabs (62, 63) radially extended from a crown towards exterior, where the piece is formed of sheet iron. An internal radius of the crown is close to that of a friction lining (3). A radial width of the crown is less than or equal to 20 percentages of a radial width of the piece. The tab (63) is in sliding contact with a part of a flange of a web (2), and the tab (62) is fixed to another part of the flange. Independent claims are also included for the following: (1) a friction disk for a dry clutch (2) a method for manufacturing a friction disk.

Description

Clutch disk

Technical field

[01] the present invention relates to a dry clutch friction disk, especially relate to the dry clutch friction disk that is used for Motor Vehicle.Usually, a clutch disk is used to be installed in a so-called driven shaft, and be inserted in a clutch reaction plate and and the pressure plate that connects of driving shaft rotation between.When operated clutch, described pressure plate compresses described friction disk and is resisted against on the described reaction plate.

Background technique

[02] although can be used on the friction disk of any type, the present invention is particularly advantageous for the gradual clutch disk of what is called.

[03] the gradual clutch disk shown in the accompanying drawing 7,8 of patent FR1304067 for example, the Steel Support that comprises the garlands shape that is flat substantially, be commonly called " emulsion sheet (voile) ", the excircle of described garlands is separated into piece, connects or is connected fin on the described garlands thereby have.

[04] described fin alternating bending, thus be included in the part that diverge to the both sides of midplane, the described part of diverging to can be under the effect of impacting force resiliently deformable.

[05] be fixed on some described part of diverging to by any suitable manner, the friction facing of a garlands shape is connected each side of described support.

[06] when compressing, fin resiliently deformable, the part of diverging to engage each other again.

Therefore [07] when friction disk compresses, and during the transmission torque, produce progressive effect in the controlled clutch process, this can reduce unexpected time-out significantly.

[08] in order to increase the elasticity of fin, described fin has otch and hole.

[09] when operation, friction facing stands tangible heating, and described tangible heating can reduce the surface hardness of friction facing.

Therefore [10] under the effect of the impacting force that friction facing stands, friction facing occurs in the scale formation of the described fin in the friction facing continually, causes elastic loss and therefore causes gradual loss.

[11], proposed at the band or the paillon foil that insert plug-in unit, especially steel between a ring-type that is adhered to each friction facing between described friction facing and the described fin for avoiding described shortcoming.Visible a kind of like this setting meets the demands in Fig. 7 of aforesaid F.P. 1304067 and Fig. 8.

[12] observe,, can therefore increase the inertia of friction disk aspect antiscale although a kind of like this setting is favourable.Produce the lower flexibility of Transmitted chains thus, especially performance is obviously in clutch and the process of separating.

[13] one of liner that is to make the zone that comprises that at least thickness reduces between emulsion sheet and friction facing as another suggestion described in claimant's patent application FR 2817002 alternates,

[14]-and interleaving the blade tooth of a plug-in unit, described plug-in unit comprises a garlands, and blade tooth begins radially to extend towards the outside from described garlands, and described blade tooth axially interleaves in the zone between described emulsion sheet and described one or more friction facing, and

[15]-be connected the zone that the thickness of described emulsion sheet and described friction facing reduces.

[16] shortcoming of back one technological scheme is at least one friction facing that comprises the zone that thickness reduces is difficult to implement industrial production.

Summary of the invention

[17] the objective of the invention is to remedy above-mentioned shortcoming, and propose to have less inertia and increase that (ajout d ' inertie) and a friction disk of resistive connection dirt phenomenon.Can reach described purpose by a dry clutch friction disk, described friction disk comprises an emulsion sheet, at least one friction facing and at least one plug-in unit, described plug-in unit comprises a garlands, blade tooth begins radially to extend towards the outside from described garlands, described emulsion sheet comprises progressive (progressivit é) zone, the blade tooth of plug-in unit axially is provided with respect to described progressive zone between radially extending, and a blade tooth is inserted between described emulsion sheet and the described one or more friction facing between systematically.

[18] therefore, according to the present invention, the All Ranges of the emulsion sheet that contacts with friction facing all passes through blade tooth, promptly by the non-direct contact of emulsion sheet-blade tooth-liner, can not produce any direct contact between described emulsion sheet and described one or more liner.

[19] therefore cause, compare the inertia that comprises the friction disk of plug-in unit between a ring-type, the inertia of described friction disk significantly reduces, and fouling significantly reduces in friction facing, the friction facing of known type is set simultaneously, be the substantially invariable friction facing of thickness, described friction facing usually can be with commercial run production.

[20] inventor observes, and for most of emulsion sheet, especially under the situation of the emulsion sheet that comprises progressive zone, the risk of fouling is not to be distributed on the surface of friction facing in uniform mode.Advantageously, a plug-in unit of the present invention is arranged in the clutch disk, thereby radially the blade tooth of extension is arranged to contact with the All Ranges of friction facing, in described zone, and the risk maximum of fouling.What described zone was especially corresponding is, engages when pressing reaction plate via emulsion sheet at friction disk and is applied to pressure on the liner zone when maximum.

[21] inventor also observes, and the existence of the free space between the blade tooth of a plug-in unit is particularly advantageous.Notice that thus under the effect to the regional applied pressure of pressure maximum, the material of friction facing can flow.

[22] when between a ring-type of using prior art during plug-in unit, the described mobile distortion that can cause described plug-in unit in the zone of pressure maximum.Because the special shape of of the present invention plug-in unit, described material can flow in described free space and so can avoid the distortion of a plug-in unit, described shape can be arranged (m é nager) free space between blade tooth.

[23] according to a mode of execution, a plug-in unit by a sheet material (

) make.Described sheet material is thinner usually.

[24] above-mentioned one or more friction facing and above-mentioned plug-in unit are usually by bonding assembled.

[25] according to a mode of execution, described one or more friction facings and described plug-in unit are connected in the diameter identical interior circle and cylindrical in radially basically.

[26] according to the mode of execution of friction disk of the present invention, can separate or combination:

[27]-described progressive zone comprise can axial elasticity the fin of distortion;

[28]-emulsion sheet that comprises fin is cut in a sheet material and is shaped;

[29]-and described fin interlocking is on a sheet material, and described sheet material is cut in advance and is shaped, to constitute described emulsion sheet.

[30] the invention still further relates to the manufacture method that is used to make according to dry clutch friction disk of the present invention, described dry clutch friction disk as previously mentioned and comprise an emulsion sheet that has progressive zone, at least one friction facing and a plug-in unit, wherein:

[31]-and following component parts is provided: described emulsion sheet, described one or more friction facings, described one or more plug-in units;

[32]-and assemble described component parts by rivet, thus the blade tooth of a plug-in unit axially is provided with respect to all progressive zones of emulsion sheet.

[33] according to a mode of execution of preceding method, a friction facing and a plug-in unit are assembled into the shape of a friction mechanism in advance.Therefore make things convenient for the installation of friction disk subsequently.

[34] according to another mode of execution of preceding method, component parts is assembled by the rivet of a small amount of (seuls), and wherein an end of rivet abuts on the counter boring surface of described one or more friction facings.Therefore can avoid using glue in the assembling and obtaining with regard to cost a favourable friction disk.

[35] " by the assembling of a plurality of independent rivets " refer to that in assembling it is the driving link of transmitting effect power between the assembling component parts that rivet is only arranged, and has therefore got rid of bonding each other component parts.

[36] " the counter boring surface of friction facing " refers to receive the surface of a rivet head, is plane or conical surfaces especially substantially, and can be provided with is especially respectively the rivet head plane or taper, is in contact with it.Described counter boring surface obtains by the milling liner, thereby produce a boring thereon, described boring has a part and a larger-diameter part than minor diameter, rivet body can move in than the part of minor diameter described, and an end of described larger-diameter part comprises the counter boring surface that is used to receive rivet head.Larger-diameter part is by milling, thereby rivet head is embedded in the friction facing under untapped state.After compression rivet, the major component on counter boring surface contacts with the surface-supported major component of rivet head.

Therefore [37] can show that described friction disk especially can be applied to join to the clutch of diesel engine, wherein, the disc load and therefore the pressure on the friction facing be enhanced.

Show that [38] described friction disk can effectively satisfy the centrifugal stress of described application, and because the inertia of described friction disk appropriateness, the transition of speed is very soft.

Description of drawings

[39] followingly will describe the present invention in detail by by the limiting examples shown in the following drawings:

[40]-and Fig. 1: the schematic representation of friction disk;

[41]-and Fig. 2: the schematic representation of plug-in unit between friction disk of the present invention;

[42]-Fig. 3 a: before friction disk of the present invention is installed along the generalized section of the line A-A of component parts;

[43]-Fig. 3 b: along the generalized section of the line A-A of the component parts of having assembled of friction disk of the present invention;

[44]-and Fig. 4: along the generalized section of the line B-B of the component parts of having assembled of friction disk of the present invention.

Embodiment

[45] for for the purpose of clear, the size of the different elements shown in the described accompanying drawing and its natural size are disproportionate.On institute's drawings attached, identical label is corresponding to components identical.

[46] within the scope of the present invention, term " axial ", " axially " are relevant with the spin axis of friction disk with the definition of " radially ", " radially "." axial " refers to be parallel to the direction of described spin axis, and " radially " refers to perpendicular to the described axis and the direction of passing described axis.

[47] " inside " depends on the zone of nearly described spin axis, and " outside " refers to radially the zone away from described spin axis.

[48] Fig. 1 illustrates the front schematic view of friction disk 1, and described friction disk 1 comprises: a wheel hub 5, one friction facings 3 that can connect with a driven shaft and an emulsion sheet 2 shown in broken lines.Elastic member especially spring 4 is provided so that the vibration that can cushion and/or filter from the driving shaft to the driven shaft.

[49] Fig. 2 represents the view of a plug-in unit 6.Described plug-in unit comprises a garlands 61, and the inner radial of described garlands 61 is near the inner radial of friction facing 3.

Blade tooth

62,63 radially extends towards the outside from described garlands 61 beginnings.Preferably, described

blade tooth

62,63 extends up to the boundary that outer radius constituted by friction facing 3.According to a mode of execution, the radial width of garlands 61 be less than or equal to a plug-in unit 6 whole radial width 20%, the radial width of described garlands 61 is considered outermost radially between the extension at the inner radial of described plug-in unit 6 and blade tooth.According to a mode of execution, the zone that is connected to garlands 61 of

blade tooth

62,63 circumferentially occupy described garlands 61 outer perimeter at least 50%.

[50]

blade tooth

62,63 shown in is a rectangle substantially.Described hock can also be the horn mouth shape, and is for example wideer towards inside towards the outside ratio.

[51] blade tooth 62 comprises aperture 64, described aperture 64 can make rivet body by but cannot make rivet head pass through.Blade tooth 63 is solid.

[52] Fig. 3 represents along a section of the friction disk of the present invention of the line A-A of Fig. 1, before wherein component parts shows as in Fig. 3 a and is arranged on installation, and in Fig. 3 b, show as be arranged on installation after.A plug-in unit 6 is set at each side of emulsion sheet 2 between a described emulsion sheet and a friction facing 3.Described friction facing comprises that by the hole of milling described hole has the enough wide part 32 that is used to receive rivet head 7, and is used to allow rivet body to move and the narrower part 33 that can not allow rivet head pass through.One counter boring surface 31 is positioned at the bottom of the wideest part 32, and rivet head can recline (appuyer) on described counter boring surface.Be used for zone 33 contacts in the hole of friction facing between the part of plug-in unit 6 also comprise the identical hole of a diameter 64, same, emulsion sheet 2 also comprises the identical hole of a diameter 21.The friction facing 3 that is positioned at the opposite side of emulsion sheet 2 comprises a hole 34 that can make rivet head pass through.Contact with counter boring surface 31 by the head that described rivet is set in a side, and be set to emulsion sheet by another head with described rivet, can crimping (sertit) rivet 7 in order to connect friction facing 3, a plug-in unit 6 and emulsion sheet 2, described rivet body is passed

hole

33,64,21.Between plug-in unit 6 can be adhered to friction facing 3 in advance.

[53] after assembling, between two plug-in units, one come from the existence of progressive zone in emulsion sheet (zones de progressivit é), but described progressive zone especially is the fin form of axial elasticity distortion apart from e.Described fin is shown in broken lines to be represented with profile type in Fig. 1 and in Fig. 3 and Fig. 4.

[54] in this case, fin is rabbeted on a sheet material, and described sheet material is cut in advance and is shaped, to constitute emulsion sheet 2.

[55] Fig. 4 represent with in the generalized section of the identical friction disk of the friction disk shown in Fig. 3 along the line B-B of Fig. 1.Can easily see, emulsion sheet 2 comprises fin, blade tooth 63 sliding contacts of the part of described fin and first plug-in unit 6, the second portion of described fin is fixed to the blade tooth 62 of the boring of second plug-in unit 6, and the third part of described fin is fixed on the boring blade tooth 62 of first plug-in unit 6 and the 4th part of described fin and blade tooth 63 sliding contacts of second plug-in unit 6.According to this view, therefore obtain the wave-like in described emulsion sheet zone, described wave-like can guarantee the gradual of friction disk.And according to the present invention, the All Ranges that contacts with friction facing of emulsion sheet 2 is realized by

blade tooth

62 or 63.

[56] the invention is not restricted to the mode of execution of described type, and should be explained in mode nonrestrictive and that comprise all mode of executions that are equal to.

Claims

1. dry clutch friction disk, it comprises: an emulsion sheet (2), at least one friction facing (3) and at least one plug-in unit (6), described plug-in unit (6) comprises a garlands (61), blade tooth (62,63) begins radially to extend towards the outside from described garlands, described emulsion sheet (2) comprises progressive zone, the blade tooth (62,63) that radially extends of described plug-in unit (6) axially is provided with respect to described progressive zone, and blade tooth (62,63) is inserted between described emulsion sheet (2) and the described one or more friction facing (3) between systematically.

2. according to the described friction disk of claim 1, it is characterized in that described plug-in unit (6) forms since a sheet material.

3. require each described dry clutch friction disk in 1 to 2 according to aforesaid right, it is characterized in that, described one or more friction facings (3) and described plug-in unit (6) are by bonding assembled.

4. according to the described friction disk of claim 3, it is characterized in that described one or more friction facings (3) and described plug-in unit (6) are connected in the diameter identical interior circle and cylindrical in radially basically.

5. require each described friction disk in 1 to 4 according to aforesaid right, it is characterized in that, described progressive zone comprise can the axial elasticity distortion fin.

6. according to the described friction disk of claim 5, it is characterized in that the emulsion sheet (2) that comprises described fin is cut and is shaped in a sheet material.

7. according to the described friction disk of claim 5, it is characterized in that described fin interlocking is on a sheet material, described sheet material is cut in advance and is shaped, to constitute described emulsion sheet (2).

8. be used for making manufacture method, it is characterized in that according to aforesaid right requirement 1 to 7 each described dry clutch friction disk:

-following component parts is provided: described emulsion sheet (2), described one or more friction facings (3), described one or more plug-in units (6); And

-assemble described component parts by rivet (7), thus the described blade tooth of described plug-in unit (6) (62,63) axially is provided with respect to all progressive zones of described emulsion sheet (2).

9. according to the described manufacture method of claim 8, it is characterized in that described friction facing (3) and described plug-in unit (6) are assembled into the form of a friction mechanism in advance.

10. according to the described manufacture method of claim 9, it is characterized in that described component parts is assembled by a spot of rivet (7), an end of wherein said rivet abuts on the counter boring surface (31) of described one or more friction facing (3).