Multi-plate clutch

Abstract

Multi-plate clutch with inner plates (11, 12; 51, 52) each arranged between two outer plates (21-23; 61-63) such that the inner plates (11, 12; 51, 52) can be brought into frictional engagement with the outer plates (21-23; 61-63) in a contact area (25; 65), wherein the inner plates (11, 12; 51, 52) and the outer plates (21-23;61-63) essentially have the shape of circular ring discs with a rectangular ring cross-section, wherein the inner lamellae (51, 52) have ring cross-sections that taper radially outwards in the contact area (65) and wherein the inner lamellae (51, 52) each comprise a lining carrier (53, 54) that tapers radially outwards, wherein the outer lamellae (61-63) have ring cross-sections that taper radially inwards in the contact area (65), characterized in that the ring cross-sections of the outer lamellae (61-63) taper inwards to a point, and wherein the inner lamellae (51, 52) each comprise a lining carrier (53, 54) that tapers radially outwards to a point.

Description

[0001] The invention relates to a multi-plate clutch with inner plates, each arranged between two outer plates such that the inner plates can be brought into frictional engagement with the outer plates in a contact area, wherein the inner plates and the outer plates essentially have the shape of circular annular disks with a rectangular ring cross-section. The invention also relates to a multi-plate assembly with inner plates and outer plates.

[0002] German patent application DE 10 2009 006 648 A1 discloses a multi-plate clutch, in particular a double-plate clutch, with at least one plate pack comprising plates that are rotationally fixed to different plate carriers, wherein a sealing device is arranged between at least one of the plate carriers and at least one plate rotatable relative to it, which fills a radial gap between the plate carrier and the plate rotatable relative to it. International patent publication WO 2008 / 067789 A1 discloses a multi-plate clutch arranged in an oil-filled housing, comprising at least two plates whose facing end faces form friction surfaces, wherein the friction surface of one of the plates has a friction lining at least partially provided with cooling channels.German patent application DE 10 2010 025 327 A1 discloses a method for producing a friction lining, wherein at least one friction lining is clamped between two plates, designed as a positive and a negative mold, and the friction lining is hardened in a clamped state, thereby bringing the friction lining into a desired shape, wherein the two plates are two conically shaped plates, designed as a positive and a negative mold, whereby the friction lining has a desired taper after hardening.

[0003] The object of the invention is to simplify or improve the manufacture and / or functionality of multi-plate clutches with inner plates, each arranged between two outer plates in such a way that the inner plates can be brought into frictional engagement with the outer plates in a contact area, wherein the inner plates and the outer plates essentially have the shape of circular annular disks with a rectangular ring cross-section.

[0004] The problem with a multi-plate clutch with inner plates, each arranged between two outer plates such that the inner plates can be brought into frictional engagement with the outer plates in a contact area, is solved by the fact that the inner plates have annular cross-sections that taper radially outwards in the contact area, and the outer plates have annular cross-sections that taper radially inwards in the contact area. The inner and outer plates advantageously taper conically in opposite directions. The preferably conical tapers advantageously have the same cone angles. This facilitates frictional engagement in the contact area.Furthermore, the identical cone angles allow for optimal use of the installation space for the plates in the multi-plate clutch.

[0005] A preferred embodiment of the multi-plate clutch is characterized by the fact that the annular cross-sections of the outer plates taper inwards. This optimizes the use of the available space. For strength reasons, it may be advantageous to leave a certain amount of material radially inside.

[0006] Another preferred embodiment of the multi-plate clutch is characterized in that the inner plates each comprise a friction carrier that tapers radially outwards. The taper on the friction carrier preferably has substantially the same cone angle as the taper on the corresponding outer plates.

[0007] Another preferred embodiment of the multi-plate clutch is characterized in that the inner plates each comprise a friction carrier that tapers radially outwards to a point. As with the outer plates, it can also be advantageous for strength reasons to leave a certain amount of material radially outwards on the friction carriers.

[0008] Another preferred embodiment of the multi-plate clutch is characterized in that friction linings of a substantially constant thickness are attached to the lining carrier. This ensures, in a simple manner, that the friction linings wear evenly during operation of the multi-plate clutch. In this case, the tapering of the inner plates is achieved solely by the shape of the associated lining carriers for the friction linings.

[0009] Another preferred embodiment of the multi-plate clutch is characterized in that the friction lining carriers are made of steel. The steel material has the advantage that the lining carriers with their tapered shape can be manufactured simply and cost-effectively. The friction linings are preferably made of a special friction lining material. Various friction lining materials are used, particularly depending on whether the multi-plate clutch is operated in wet or dry operation.

[0010] Another preferred embodiment of the multi-plate clutch is characterized in that the outer plates are made of steel. The steel material has the advantage that the tapered outer plates can be manufactured simply and cost-effectively.

[0011] The invention further relates to an inner lamella and / or an outer lamella for a previously described multi-plate clutch. The lamellae are separately tradable.

[0012] The invention also relates to a lining carrier and / or a friction lining for a previously described inner lamella. These parts are available separately. With regard to the friction lining, it can be advantageous if the friction lining has a shape adapted for combination with the tapered lining carrier. While the friction lining should have a substantially constant thickness, in combination with the tapered lining carrier, it can be advantageous to provide the friction lining with a chamfer that corresponds to the cone angle of the lining carrier. The friction lining is, so to speak, positioned or aligned at the cone angle of the lining carrier.

[0013] The invention further relates to a lamella assembly comprising the previously described inner and outer lamellae. The lamella assembly is tradable separately.

[0014] Further advantages, features and details of the invention will become apparent from the following description, in which various embodiments are described in detail with reference to the drawing.

[0015] The only accompanying figure shows a conventional lamellar pack above a lamellar pack according to the invention.

[0016] The enclosed figure shows a conventional lamella package. 10 with two inner lamellae 11 , 12 and three outer slats 21 , 22 , 23 Simplified view in half-section. The inner lamellae 11 , 12 and the outer slats 21 , 22 , 23They essentially have the shape of circular ring disks with rectangular ring cross-sections, which can be seen in the half-section shown in the figure.

[0017] The inner slats 11 , 12 Each includes a lining carrier 13 , 14 , each of which has two friction linings 15 , 16 ; 17 , 18 are attached. The support beams 13 , 14 are made, for example, from a steel material.

[0018] The friction linings 15 until 18 are preferably formed from a suitable friction lining material. In a contact area 25 can the inner slats 11 , 12 with their friction linings 15 until 18 in contact with the outer slats 21 until 23 to be brought. For this purpose, the inner slat 11 with the coating carrier 13 and the friction linings 15 ,16 in an axial direction between the outer lamellae 21 and 22 arranged.

[0019] The term axial refers to a rotational axis of the lamellar package. 10 The axis of rotation in the accompanying figure runs in a horizontal direction. Axial means in the direction of or parallel to the axis of rotation. Analogous means radial, perpendicular to the axis of rotation.

[0020] The inner slat 12 with the coating carrier 14 and the friction linings 17 , 18 is in the axial direction between the two outer lamellae 22 and 23 arranged by a double arrow 31 is the extent or dimension of the lamella package 10 indicated in the axial direction.

[0021] The figure shows the area below the lamellar package. 10 a lamellar package according to the invention 50 arranged. The louver package 50 includes two inner lamellae 51, 52 and three outer slats 61 , 62 , 63 The inner slats 51 , 52 Each includes a lining carrier 53 , 54 , each of which has two friction linings 55 , 56 ; 57 , 58 are appropriate.

[0022] The coating carriers 53 and 54 Each radially inside has a coupling area 59 , 60 on. The coupling areas 59 , 60 the coating carrier 53 , 54 When viewed in the depicted half-section, they have the shape of rectangles.

[0023] To illustrate a rotationally fixed connection with an inner plate carrier of a (not shown) multi-plate clutch, the lining carriers can be used. 53 , 54 in the coupling areas 59 , 60It must be equipped with internal teeth. The internal teeth serve to hook into, or to connect to, the inner lamella carrier in a rotationally fixed manner.

[0024] Starting from the coupling areas 59 , 60 do the support structures taper? 53 , 54 in a contact area 65 radially outwards, that is, upwards in the attached figure. The lining supports run along their radially outer ends. 53 , 54 pointed.

[0025] The friction linings 55 , 56 ; 57 , 58 , which are attached to the support structures 53 , 54 The friction linings, which are attached, essentially have a constant or uniform thickness. This is achieved through the combination of friction linings. 55 , 56 ; 57 , 58 with the coating carriers 53 ; 54 This results in a cone-shaped tapering radially outwards on the inner lamellae. 51 , 52.

[0026] The outer slats 61 until 63 exhibit radially outward coupling areas 71 , 72 , 73 on. The coupling areas 71 until 73 serve to protect the outer slats 61 until 63 to connect in a rotationally fixed manner to an outer plate carrier of the multi-plate clutch. For this purpose, the outer plates can be 61 until 63 in the coupling areas 71 until 73 They have external teeth. These external teeth allow the outer lamellae to be... 61 until 63 then be hooked into the outer lamella carrier of the lamellar coupling or connected to the outer lamella carrier in a rotationally fixed manner.

[0027] Starting from the coupling areas 71 until 73 the outer slats taper 61 until 63 in the contact area 65radially inwards. The conical tapers of the outer lamellae. 61 until 63 radially inwards are the conical tapers of the inner lamellae. 51 , 52 radially outwards adapted. The outer slats 61 until 63 They taper radially inwards to a point.

[0028] By a double arrow 32 It is indicated that the lamella package 50 due to the tapering of the inner lamellae 51 , 52 and the outer slats 61 until 63 has a significantly smaller extent or dimension in the axial direction than the conventional lamellar package shown above. 10 . Reference symbol list 10 slat package 11 Inner slat 12 inner slats 13 decking boards 14 decking supports 15 friction lining 16 friction lining 17 friction lining 18 friction lining 21 Outer slat 22 Outer slat 23 Outer slat 25 Contact area 31 Double Arrow 32 Double Arrow 50 slat package 51 Inner slat 52 inner slat 53 decking carriers 54 decking carriers 55 friction lining 56 Friction lining 57 Friction lining 58 friction lining 59 Coupling area 60 coupling area 61 Outer slat 62 Outer slat 63 Outer slat 65 Contact area 71 Coupling area 72 Coupling area 73 Coupling area QUOTES INCLUDED IN THE DESCRIPTION

[0029] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0030] DE 102009006648 A1

[0002] WO 2008 / 067789 A1

[0002] DE 102010025327 A1

[0002]

Claims

[1] Multi-plate clutch with internal plates ( 11 , 12 ; 51 , 52 ), each positioned between two outer slats ( 21 – 23 ; 61 – 63 ) are arranged so that the inner slats ( 11 , 12 ; 51 , 52 ) in a contact area ( 25 ; 65 ) in frictional engagement with the outer lamellae ( 21 – 23 ; 61 – 63 ) can be brought, whereby the inner lamellae ( 11 , 12 ; 51 , 52 ) and the outer slats ( 21 – 23 ; 61 – 63 ) essentially have the shape of circular ring disks with a rectangular ring cross-section, characterized by that the inner slats ( 51 , 52 ) exhibit ring cross-sections that are located in the contact area ( 65 ) taper radially outwards, with the outer lamellae ( 61 – 63) exhibit ring cross-sections that are located in the contact area ( 65 ) taper radially inwards. [2] Multi-plate clutch according to claim 1, characterized by that the ring cross-sections of the outer lamellae ( 61 – 63 ) taper to a point inwards. [3] Multi-plate clutch according to one of the preceding claims, characterized by that the inner slats ( 51 , 52 ) each a lining carrier ( 53 , 54 ) which tapers radially outwards. [4] Multi-plate clutch according to one of the preceding claims, characterized by that the inner slats ( 51 , 52 ) each a lining carrier ( 53 , 54 ) encompassing a radial shape that tapers to a point towards the outside. [5] Multi-plate clutch according to claim 3 or 4, characterized by that on the coating carrier ( 53 , 54 ) Friction linings ( 55 , 56 ; 57 , 58) are attached with a substantially constant thickness. [6] Multi-plate clutch according to one of the preceding claims, characterized by that the coating carriers ( 53 , 54 ) are made of a steel material. [7] Multi-plate clutch according to one of the preceding claims, characterized by that the outer slats ( 61 – 63 ) are made of a steel material. [8] Inner slat ( 51 , 52 ) and / or outer slat ( 61 – 63 ) for a multi-plate clutch according to one of the preceding claims. [9] Decking carrier ( 53 , 54 ) and / or friction lining ( 55 – 58 ) for an inner slat ( 51 , 52 ) according to claim 8. [10] Lamella pack ( 50 ) with internal louvers ( 51 , 52 ) and outer slats ( 61 – 63 ) according to claim 8.

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