DE112017006220T5 - torsion damper - Google Patents

Abstract

The invention relates to a torsion damping device having at least one torque input element, at least one torque output element and at least one group of elastic organs (29, 30), which are mounted between the torque input and the torque output element, wherein the elastic members (29, 30) of this group over at least one Phase organ are arranged in series, so that the elastic members (29, 30) of each group about an axis of rotation (X) of the device deform in phase with each other, with guide discs (31, 32) axially on one side and on the other elastic organs (29, 30) lie between which a volume is limited, in which the elastic members (29, 30) are housed, with pendulum damping means, the pendulum masses (39) which are movably mounted on the phase organ, characterized in that the phase organ with the guide discs (31, 32) fixedly connected or at least partially through this is formed, wherein the device comprises sealing means which define with the guide discs (31, 32) a dense volume in which the elastic members (29, 30) are housed.

Description

The present invention relates to a torsion damping device, in particular for a motor vehicle transmission system.

In such an application, the torsion damping device may be incorporated in a torsion damping system of a clutch which may selectively connect the internal combustion engine to the transmission to filter the vibrations due to the nonuniformities of the engine.

As a variant, in such an application, the torsion damping device may be integrated in a clutch friction disk or in a hydrodynamic torque converter.

The invention also relates to a transmission assembly for a motor vehicle of the hybrid motor vehicle type, in which an electric machine is arranged in the transmission chain between the engine and the transmission.

Such an apparatus generally includes a torque input member, a torque output member, and resilient members mounted between the torque input member and the torque output member and counteracting rotation of the torque input member and the torque output member with each other.

When the torque transmitting device is a LTD (Long Travel Damper) type, it has a plurality of groups of elastic members, and the elastic members of one and the same group are arranged in series via a phaser such that the elastic members of each group deform in phase with each other.

The patent application FR 3 015 380 in the name of the Applicant discloses a torsional damping device having a torque input member, a torque output member and at least one group of elastic members disposed between the torque input member and the torque output member and counteract the rotation of the torque input member and the torque output member to each other, the elastic members of this group over at least one Phase member are arranged in series, so that deform the elastic members of each group about an axis of rotation of the device in phase with each other. Axial on one side and on the other side of the elastic organs are guide discs, between which a volume is limited, in which the elastic organs are housed.

On the phase organ pendulum masses are movably mounted. The phase organ is formed by an annular cover.

Depending on the application, it may be necessary to form a dense volume filled with lubricant in which the elastic members are housed. Hereinafter, the term dense indicates a volume with which it is possible to hold the lubricant contained therein.

In order to effectively realize such a tightness without impairing the other functions of the device, it is appropriate to change the structure thereof.

The object of the invention is in particular to provide a simple, effective and cost-effective solution to this problem.

To this end, it proposes a torsional damping device having at least one torque input element, at least one torque output element and at least one group of elastic members mounted between the torque input and torque output elements and counteracting rotation of the torque input element and the torque output element, the elastic members thereof opposing each other Group are arranged in series over at least one phase organ, so that the elastic members of each group deform in phase about an axis of rotation of the device, with guide discs which lie axially on one and on the other side of the elastic members and between which limits a volume is, in which the elastic organs are housed, with pendulum damping means having pendulum masses which are movably mounted on the phase organ, characterized in that the phase organ with the guide discs fixed connected or at least partially formed by the latter, wherein the device comprises sealing means defining with the guide discs a dense volume in which the elastic members are housed.

With such a construction, it is possible to simplify the arranging of the sealing means, to remove the shuttle means radially from the device axis, and to guide the torque from the inlet to the outlet near the axis of the device, so that their operation is improved.

It is very easy to do that To attach pendulum damping means to the phase organ, if this defines the dense volume in which the elastic organs are housed, without worsening or complicating the tightness of this volume. Namely, it is difficult to fix the pendulum damping means to the phase organ when it is inserted in this dense volume without encountering problems of tightness.

The pendulum masses are movably mounted on an annular holder which is attached to the guide discs.

The radially inner circumference of the holder is fastened in particular in a tight manner axially between the radially outer peripheries of the guide discs.

It is thus possible to control the tightness at the height of the attachment area between the annular holder and the guide discs in a simple manner. Such attachment can be realized by welding the entire circumference.

The pendulum masses can be axially on one side and on the other side of the holder.

As a variant, the holder may have two axially offset from each other annular portions, wherein the pendulum masses are mounted axially between the sections of the holder.

The pendulum masses may lie radially outside the elastic members and the guide discs.

The effectiveness of the pendulum damping means is thereby increased.

The torque input member has an input cover with an annular portion and tabs extending radially inwardly, the resilient members being arranged to bear against the tabs of the input cover.

The torque input member may include a primary annular inertial mass secured to an axially deformable metal sheet.

The deformable metal sheet allows separation of the primary inertial mass with respect to bending, so that the operation of the device is improved.

The torque input element may comprise an input hub, e.g. is attached via rivets on the radially inner periphery of the sheet, wherein the hub is rotatably coupled to the input cover.

For this purpose, the hub may have coupling pins or teeth which engage in recesses or recessed areas with complementary shape of the input cover or vice versa.

The torque output member may include an exit cover having an annular portion and tabs extending radially inwardly, the elastic members being arranged to bear against the tabs of the exit cover.

The torque output member may have a hub, e.g. a grooved hub, e.g. fastened by rivets to the output cover.

Each guide disc may have at least one recessed portion extending circumferentially and intended to at least partially receive the elastic members, the elastic members being arranged to bear against the peripheral ends of the recessed portions.

The sealing means may comprise a first sealing disc which axially bears in a sealed manner on one of the guide discs and on the input cover, and a second sealing disc which is axially supported in a sealed manner on the other guide disc and on the output cover.

The sealing discs are elastically deformable, for example in the axial direction. The gaskets are e.g. elastic conical discs, also known as Belleville washers.

The input cover and the output cover may each have an annular portion extending radially, the annular portions axially abutting each other in a sealed manner.

The output cover may comprise two annular sections, e.g. have two annular plates which lie axially on one side and on the other side of the input cover.

The invention also relates to a component for a transmission system of a motor vehicle, wherein the component is in particular a double-damping flywheel, a hydrodynamic torque converter or a friction disk with a damping device of the aforementioned type.

The invention further relates to a transmission assembly for a hybrid motor vehicle with an electric machine and a component of the aforementioned type, which can be arranged between an internal combustion engine and a transmission.

• - 1 eine perspektivische Explosionsansicht einer Vorrichtung gemäß einer ersten Ausführungsform der Erfindung,
• - 2 eine perspektivische Ansicht der Vorrichtung, wobei eine der Führungsscheiben entfernt wurde,
• - 3 und 4 Schnittansichten der Vorrichtung entsprechend zwei unterschiedlichen Schnittebenen,
• - 5 und 6 Schnittansichten eines Teils der Vorrichtung gemäß der ersten Ausführungsform bzw. gemäß einer zweiten Ausführungsform der Vorrichtung,
• - 7 eine Halbansicht im Schnitt der Vorrichtung gemäß einer dritten Ausführungsform.

Upon reading the following description, given by way of non-limitative example with reference to the accompanying drawings, the invention will be better understood and other details, features and advantages of the invention will be apparent. In the drawings show:

• - 1 an exploded perspective view of a device according to a first embodiment of the invention,
• - 2 a perspective view of the device, wherein one of the guide was removed,
• - 3 and 4 Sectional views of the device according to two different cutting planes,
• - 5 and 6 Sectional views of a part of the device according to the first embodiment and according to a second embodiment of the device,
• - 7 a half-view in section of the device according to a third embodiment.

The 1 to 5 show a torsion damping device according to a first embodiment of the invention.

This has a torque input element with an annular primary inertial mass 1 with the axis X and a curved thin sheet metal 2 on, the radially outer circumference, for example via a welded connection on the back of the inertial mass 1 is attached.

An annular target 3 is eg via a welded connection on a radial front surface of the primary inertial mass 1 attached. The goal 3 has a radial annular portion 4 and a cylindrical section 5 extending from the radially outer periphery of the radial section 4 extends to the front. The cylindrical section 5 has openings 6 which are distributed over the entire circumference and can be detected by an optical system, for example, to measure the rotational speed and / or the angular position of the torque input element.

The torque input element further has an input hub 7 with a radial annular rim 8th at the level of their rear end. The edge 8th is for example about rivets on the radially inner circumference of the sheet 2 attached. The inner peripheral surface of the hub 7 is cylindrical and has a groove, which is the insertion of an elastic ring or a locking ring 9 allows.

The front end of the input hub 7 has teeth 10 on, which are evenly distributed around the circumference, with the teeth 10 extend axially forward.

The torque input element also has an input cover 11 with an annular section 12 on, starting from which Laschen 13 extend radially outward. The annular section 12 has a radially outer area 14 extending in a radial plane with respect to the radially inner region 15 of the annular portion 12 axially offset to the front. The inner area 15 and the outer area 14 are thus over a curved area 16 connected with each other. The tabs 13 extend in the radial plane of the radially outer region 14 of the annular portion 12 , The annular section 12 has holes 17 on, which are intended for performing a riveting tool.

The radially outer ends of the tabs 13 have retaining pins 18 on, which is circumferentially on one side and on the other side of each tab 13 extend.

The apparatus further includes a torque output member having an output cover 19 and an output hub 20 on.

The output cover 19 has an annular portion 21 on, starting from which Laschen 22 extend radially outward. The annular portion has a radially outer region 23 extending in a radial plane with respect to the radially inner region 24 of the annular portion 21 axially offset to the rear. The inner and outer areas are thus over at least one curved area 25 connected with each other. The tabs 22 extend in the radial plane of the radially outer region 23 of the annular portion 21 , The annular section 21 has holes 26 on, which are intended for performing a riveting tool.

The radially outer ends of the tabs 22 have retaining pins 27 on, which is circumferentially on one side and on the other side of each tab 22 extend.

The output hub 20 has an edge at the level of its front end 28 on, which extends radially outward.

The cylindrical outer surface of the hub 20 has a groove in which the elastic ring 9 is inserted so that the input hub 7 and the output hub 20 translationally connected axially and thereby their relative pivotal movement about the axis X is allowed.

The radially inner circumference of the output cover 19 rests against the back surface of the rim 28 off and is with the output hub 20 welded.

Three pairs of elastic organs 29 . 30 are circumferentially mounted between the torque output element and the torque input element via a phase member. At the elastic organs 29 . 30 These are, for example, helical compression springs, in particular straight springs. Every elastic organ 29 . 30 can include two concentric compression springs.

The phase organ has a rear guide disc 31 and a front guide disc 32 on.

Every guide disc 31 . 32 has three recessed areas 33 which extend circumferentially and evenly about the axis X are distributed, with the peripheral ends of the recessed areas 33 support areas 34 for the elastic organs 29 . 30 form.

The recessed areas 33 and the support areas 34 the two guide discs are opposite each other.

The radially inner circumference of the rear guide pulley 31 has a rearwardly extending cylindrical rim 35 on, which swivels around the input hub 7 is appropriate. The radially inner circumference of the front guide disc 32 is around the edge 28 the output hub 20 pivotally mounted.

Each guide disc has holes 36 on, which serve for introducing a riveting tool and the holes 17 . 26 are opposite.

The radially outer circumferences 37 the guide discs 31 . 32 extend radially and are, for example via a welded joint on one side and on the other side of an annular holder 38 attached, which extends radially. The holder 38 extends outside the guide discs 31 . 32 , On the holder 38 are about rolling organs, as is well known, pendulum masses 39 movably mounted so that damping means are formed, which enable an improvement of the filtering of the vibrations and the rotational nonuniformities.

For every pair of elastic organs 29 . 30 is a first elastic organ 29 arranged so that it is at a first end to one of the tabs 13 the entrance cover 11 and at a second end to support areas 34 the guide discs 31 . 32 comes into abutment, with a second elastic organ 30 arranged so that it attaches to support areas 34 the guide discs 31 . 32 and at one of the tabs 22 the output cover 19 got into contact. The elastic organs 29 . 30 thus act the pivotal movement of the input cover 11 with respect to the output cover 19 or more generally, the torque input element with respect to the torque output element about the axis X opposite.

The elastic organs 29 . 30 one and the same pair are above the guide discs 31 . 32 , which form a phase organ, arranged in series, so that the elastic organs 29 . 30 each group around the axis X deform in phase with each other.

A first elastic disc 40 ( 3 and 4 ), which is elastically deformable in the axial direction, is axially between the rear guide disc 31 and the entrance cover 11 arranged. A second elastic disc 41 with similar construction is axially between the front guide disc 32 and the output cover 19 arranged. The elastic discs 40 are for example conical disks, which are also called Belleville disks.

The radially outer circumference of each elastic disc 40 is supported by the corresponding input cover 11 or output cover 19 from, and the radially inner circumference of each elastic disc 40 rests on the corresponding guide disc 31 . 32 from. Of course, this is also possible vice versa. These supports are continuous over the entire circumference, so that at the height of these areas a tightness is ensured.

In addition, the outer areas are supported 14 . 23 the annular portions of the input and the output cover 11 . 19 in a dense manner to each other.

It ensures a tightness of the volume, at least a seal against lubricant, with the volume of the guide discs 31 . 32 , the holder 38 , the input and the output cover 11 . 19 and the elastic discs 40 . 41 is limited. The volume takes the elastic organs 29 . 30 and can be filled with lubricant to ensure good lubrication.

In operation, the torque is transmitted through the elastic organs 29 . 30 and the phase organ, in particular through the guide discs 31 . 32 is formed, for example, transmitted from a crankshaft to the torque input element and then to the torque output element. In operation, the torque input element, the Phase member and the torque output element also pivot to each other, wherein such pivotal movement then friction at the level of the contact areas between the two covers 11 . 19 or the contact areas with the elastic discs 40 generated. Such friction agents, also referred to as hysteresis agents, co-act with the elastic members 29 . 30 for damping the vibrations and the rotational irregularities.

6 FIG. 2 illustrates a second embodiment of the invention, different from that described with reference to FIGS 1 to 5 different embodiment in that the holder consists of two annular sections 38a . 38b exists, with the pendulum masses 39 axially between the sections 38a . 38b lie of the holder. In addition, the guide plates are based 31 . 32 at the level of its outer circumference 37 axially in a dense manner to each other. The inner peripheries of the sections 38a . 38b of the holder are eg over rivets 42 on one side and on the other side of the outer peripheries 37 the guide discs 31 . 32 attached.

7 FIG. 3 illustrates a third embodiment, which differs from that of FIG 1 to 5 set forth embodiment differs in that the input cover 11 extends radially, with the output cover 19 from two separate sections or sheets 19a . 19b which extend radially and axially on one and on the other side of the input cover 11 lie. The inner circumference of the sheets 19a . 19b is about rivets, for example 43 at the output hub 20 attached. An annular shoe 44 made of synthetic material is between the radially inner periphery of each guide disc 31 . 32 and the corresponding sheet metal 19a . 19b attached, so that the tightness of the volume is ensured, in which the elastic organs 29 . 30 are housed.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• FR 3015380 [0007]

Claims (14)

Torsion damping device, comprising at least one torque input element, at least one torque output element and at least one group of elastic members (29, 30), which are mounted between the torque input and the torque output element and the rotation of the torque input element and the torque output element counteract each other, wherein the elastic members (29, 30) of this group are arranged in series over at least one phase element, so that the elastic members (29, 30) of each group deform in phase about an axis of rotation (X) of the apparatus, with guide discs (31, 32) axially on the one and on the other side of the elastic members (29, 30) and between which a volume is limited, in which the elastic members (29, 30) are housed, with pendulum damping means comprising pendulum masses (39) movable on the phase organ are attached, characterized in that the phase organ with the guide discs (31, 32) are fixedly connected or at least partially formed by the latter, the device having sealing means (40) which, with the guide discs (31, 32), limit a dense volume in which the elastic members (29, 30) are housed. Device after Claim 1 , characterized in that the pendulum masses (39) are movably mounted on an annular holder (38) mounted on the guide discs (31, 32). Device after Claim 2 , characterized in that the radially inner periphery of the holder (38) is axially fixed in a sealed manner between the radially outer peripheries (37) of the guide discs (31, 32). Device according to one of Claims 1 to 3 , characterized in that the pendulum masses (39) radially outside of the elastic members (29, 30) and the guide discs (31, 32) lie. Device according to one of Claims 1 to 4 characterized in that the torque input member comprises an input cover (11) having an annular portion (12) and tabs (13) extending radially inwardly, the resilient members (29, 30) being arranged to abut support the tabs (13) of the input cover (11). Device according to one of Claims 1 to 5 , characterized in that the torque input element has a primary annular inertial mass (1) which is fixed to a in the axial direction (X) deformable sheet (2). Device according to the Claims 5 and 6 characterized in that the torque input member comprises an input hub (7) fixed, for example, by rivets to the radially inner circumference of the sheet (2), the hub (7) being rotatably coupled to the input cover (11). Device according to one of Claims 1 to 7 characterized in that the torque output member comprises an output cover (19) having an annular portion (21) and tabs (23) extending radially inwardly, the resilient members (29, 30) being arranged to abut support the tabs (23) of the output cover (19). Device according to one of Claims 1 to 8th characterized in that each guide disc (31, 32) has at least one recessed portion (33) extending circumferentially and intended to at least partially receive the elastic members (29, 30), the elastic members (29, 30 ) are arranged so that they are supported on the peripheral ends (34) of the recessed areas (33). Device according to the Claims 6 and 9 characterized in that the sealing means comprise a first sealing disc (40) axially supported in a sealed manner on one of the guide discs (31) and on the input cover (11), and a second sealing disc (40) axially in denser Way on the other guide disc (32) and on the output cover (19) is supported. Device after Claim 10 characterized in that the input cover (11) and the output cover (19) each have an annular portion (14, 23) extending radially, the annular portions (14, 23) axially abutting one another in a sealed manner. Device according to the Claims 5 and 8th characterized in that the output cover (19) comprises two annular portions (19a, 19b), eg two annular plates, lying axially on one and on the other side of the input cover (11). Component for a transmission system of a motor vehicle, wherein the component is in particular a double-damping flywheel, a hydrodynamic torque converter or a friction disk with a damping device according to one of Claims 1 to 12 is. Transmission assembly for a hybrid motor vehicle with an electric machine and a component according to Claim 13 that between one Combustion engine and a transmission can be arranged.

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