JP2017514078A - Torque transmission device for automobile - Google Patents

Abstract

The present invention relates to a torque transmission device for an automobile, and is attached between a torque input element (7a), a torque output element (24), and these torque input elements (7a, 7b) and the torque output element (24). And at least one elastic member (10a, 10b) group arranged in series via the phase matching member (30). The torque output element (24) and the phasing member (30) include a first stopping means (28a, 33a) for restricting the relative rotation in two opposite rotational directions (D, R), and a second The torque input element (7a, 7b) and the phase adjusting member (30) limit their relative rotation in two opposite rotation directions (D, R). And a third stopping means (34, 17b) and a fourth stopping means (34, 16b).

Description

  The present invention relates to a torque transmission device for an automobile.

  Such a device is generally mounted between a torque input element, a torque output element, and between the torque input element and the torque output element for rotation relative to the other of the torque input element and the torque output element. And an elastic member that acts against the above.

  When the torque transmission device is a long travel damper (LTD) type, the device includes a plurality of elastic member groups, and the elastic members of the same group are arranged in series via the phase matching members. Thus, the elastic members of each group are phase-deformed with respect to each other.

  It is known to improve the filtering quality obtained with such a transmission device by reducing the stiffness of the elastic member and / or increasing the installation radius of the elastic member.

  French patent application No. 2988455 by the present applicant discloses a transmission device of the above-mentioned type, in which a torque input element and a torque output element are in two opposite directions of rotation. First and second impact means for restricting the relative rotation of the torque input element and the phase matching member, the third and fourth impact means for restricting their relative rotation in the opposite two rotational directions. And a torque input element and a torque output element have fifth and sixth stop means for limiting their relative rotation in two opposite directions of rotation.

  In particular, the third and fourth stop means are in particular formed from a plurality of radially extending projecting elements, each projecting element being formed by stamping forging on one of the guide rings. In this way, each projecting element has two opposing stop surfaces extending in the radial direction.

  Since this type of projecting element has a large radial dimension, the elastic member must be placed at a relatively small installation radius, taking into account the available radial dimension, and also cut into the coupling zone of the guide ring. It is necessary to provide a notch, which reduces their durability. As a result, the filtering efficiency of vibration and rotational non-periodicity realized using the torque transmission device is impaired.

French patent application No. 2988455

  The invention aims in particular to provide a simple, effective and economical solution to this problem.

  For this reason, the present invention proposes a torque transmission device for an automobile, which device is mounted between a torque input element, a torque output element, and between these torque input element and torque output element, and provides a torque input device. And at least one elastic member group that acts against rotation with respect to the other of the element and the torque output element, and the elastic members of this group are arranged such that the elastic members of each group undergo phase deformation with respect to each other. In addition, the torque output element and the phase adjusting member are arranged in series via the phase adjusting member, and the torque output element and the phase adjusting member limit the relative rotation of the torque output element and the phase adjusting member in opposite two rotation directions. The torque input element and the phasing member have third and fourth stopping means for restricting their relative rotation in two opposite directions of rotation, and third and Fourth strike The means comprises at least one stop projection formed on the phasing member or torque input element and at least one arcuate elongate housing formed on the torque input element or phasing member. The impact projection is inserted into the housing and can contact each end of the housing. The first, second, third, and fourth impact means and the housing have an input element and an output element. It is arranged so that it can contact the phase matching ring at one end position.

  This makes it possible to form the third and fourth stop means using projections having a small diameter, that is, projections having a small radial dimension. Therefore, the width of the elongated housing, that is, its radial size can be reduced as well. In this way, the installation radius of the elastic member can be increased, and there is an effect of improving the quality of filtering realized.

  Depending on the position of the various stop means, in particular, it limits the compression of the elastic member mounted on the one hand between the torque input element and the phasing member and on the other hand between the phasing member and the torque output element. Thus, it is possible to control the movement of each of these elements in the angular direction.

  Further, at a specific position, for example, at the end position, the torque input is changed from the torque input to the torque output via the first, second, third and fourth stopping means via the phase adjusting member, and vice versa. The route can pass.

  Preferably, the elastic member is a compression coil spring, and the stopping means is configured to limit the compression of the spring and prevent the spring windings from coming into contact with each other.

  In this way, the coil springs are prevented from being damaged by the collapse of their windings.

  According to one characteristic of the invention, said group or each group of elastic members abuts on the one hand an annular plate forming a torque output element or torque input element and on the other hand radially on both sides of this annular plate. Abutting against two guide rings that extend to and rotate relative to the annular plate, these guide rings forming a torque input element or torque output element.

  According to another feature of the invention, the phasing member has an annular portion on the radially outer side, and the leg portion extends radially inward from the annular portion to serve as a support for the elastic member.

  In this case, the bump projection can extend in the axial direction from the annular portion on the outer side in the radial direction of the phase adjusting member in the front surface of one of the legs of the phase adjusting member, that is, the zone having high mechanical strength.

  Advantageously, the annular plate has a radially inner annular portion, and starting from this annular portion, the support leg of the elastic member extends radially outward.

  Compared to an annular plate with a mounting window for an elastic member, the annular plate can place a spring on a circumference with a larger diameter. In this way, the filtering between vibration and engine rotational aperiodicity is improved.

  In addition, these stop means extend circumferentially on both sides of each leg of the annular plate and phasing member so that the pawl means of the annular plate can abut against the pawl means of the phasing member. Yes.

  With such a structure, it is possible to easily and surely guarantee the stopping function between the phase adjusting member and the annular plate in the two rotational directions.

  According to one feature of the invention, at one end position, the stop means is arranged so that the stop means of the annular plate can abut against the stop means of the phase adjust member. The leg projections extend in the circumferential direction on both sides of the leg portion, and the stop projections can be similarly brought into contact with one end of the housing of the torque input element.

  In this way, at a predetermined one position, for example, at the end position, from the torque input to the torque output via the first, second, third and fourth stopping means via the phase adjusting member, Conversely, a torque path can pass.

  Preferably, the torque transmission device has two guide rings fixed to each other by riveting and / or welding at a radially outer peripheral position.

  In this case, at least one of the guide rings has a small deformable projection that can be bent on the other guide ring on the outer periphery in the radial direction, and both are securely fixed to each other.

  Furthermore, the torque transmission device can be a hydraulic torque converter.

  The invention will be better understood and other details, features and advantages of the invention will become apparent upon reading the following description, given by way of example and not limitation, with reference to the accompanying drawings, in which:

1 is a schematic view of a torque transmission device according to the present invention, which takes the form of a hydraulic torque converter. It is a perspective view of the longitudinal section which shows some torque transmission devices by the present invention. It is a front view which shows a part of torque transmission apparatus of FIG. It is a perspective view which shows a part of torque transmission apparatus. It is a perspective view of an annular plate. It is a perspective view of a phase alignment member. It is a perspective view which shows one of a guide ring. FIG. 2 is a front view showing a portion of a torque transmission device with various movable elements in particular angular positions. FIG. 2 is a front view showing a portion of a torque transmission device with various movable elements in particular angular positions. FIG. 2 is a front view showing a portion of a torque transmission device with various movable elements in particular angular positions. FIG. 2 is a front view showing a portion of a torque transmission device with various movable elements in particular angular positions. FIG. 2 is a front view showing a portion of a torque transmission device with various movable elements in particular angular positions.

  FIG. 1 schematically shows a part of a hydraulic torque converter according to the present invention. This torque converter can transmit torque from an output shaft of an automobile internal combustion engine such as a crankshaft 1 to an input shaft 2 of a gear box.

  The torque converter generally has a pump impeller 3 that can hydrodynamically drive a turbine runner 4 via a drive device 5.

  The pump impeller 3 is coupled to the crankshaft 1, the turbine runner 4 is coupled to the turbine hub 6, and the turbine hub itself is coupled to two guide rings 7 (hereinafter referred to as a rear guide ring 7a and a front guide ring 7b, respectively). Is done.

  The front guide ring 7b and the turbine hub 6 are rotatably mounted around a central spline hub 8 coupled to the input shaft 2 of the gear box.

  The front guide ring 7b is attached around the turbine hub 6 and fixed to the turbine hub. The two guide rings 7a, 7b extend in the radial direction, define an internal space 9 between them, and accommodate the elastic members 10a, 10b therein. These elastic members are, for example, compression coil springs.

  The rear guide ring 7b has a cylindrical rim 11 on the outer periphery in the radial direction, and the rim extends toward the front guide ring 7a and is fixed to the front guide ring.

  The free end of the cylindrical rim 11 has a small protrusion 12 extending forward in the axial direction before the two guide rings 7a, 7b are fixed to each other. These small protrusions 12 can be bent on the outer periphery of the front guide ring 7a and welded to the front guide ring during the rivet tightening operation, so that the two guide rings 7a and 7b are securely fixed. Has been.

  The guide rings 7a and 7b generally have a window 13 provided in front of the elastic members 10a and 10b.

  As shown in FIG. 7, each guide ring 7 a, 7 b has three zones 14 that are formed by stamping forging and project into the internal space 9. Each zone 14 has two opposing radial surfaces 14a, 14b for supporting the elastic members 10a, 10b.

  One of the guide rings 7a, 7b, here the rear guide ring 7b, further has three elongated arcuate openings or housings 15 extending in an arc, for example at an angle of 20 ° to 40 °. The opening 15 is disposed on the radially outer side of the stamped and forged zone 14 and the window 13 and on the radially inner side of the cylindrical rim 11. Each opening has two ends 15a, 15b.

  Similarly, the spline hub 16 (FIG. 2) is fixed to the back surface of the rear guide ring 7b. The spline hub 16 has a radial portion 17 fixed to the rear surface of the rear guide ring 7b, and a cylindrical spline rim 18 extending rearward from the radial outer periphery of the radial portion 17. .

  The clutch 19 (FIG. 1) can transmit the torque of the crankshaft 1 to the guide ring 7 at a predetermined operation stage without interposing the pump impeller 3 and the turbine runner 4. The clutch 19 has an input element 20 coupled to the crankshaft 1 and an output element including a spline hub 16.

  A radially extending annular plate 21 is mounted in the interior space 9 and fixed to the central hub 8.

  As can be seen more clearly from FIG. 5, the annular plate 21 has a radially inner annular portion 22 from which, for example, a total of three legs 23 extend radially outward. Each leg portion 23 has two opposing surfaces 23a and 23b that serve to support the elastic members 10a and 10b, and these surfaces are inclined with respect to each other and with respect to the radial direction. The two stop protrusions 24a and 24b extend in the circumferential direction on both sides of each leg 23 at the outer peripheral position of each leg.

  The elastic members 10a and 10b are attached in the circumferential direction between the annular plate and the guide rings 7a and 7b.

  In particular, the elastic members 10a and 10b are arranged in pairs. The same set of elastic members (FIG. 1) are arranged in series via a common phase adjusting member 25 such that these elastic members 10a and 10b undergo phase deformation with respect to each other. In the illustrated embodiment, the torque converter has three sets of elastic members 10a and 10b.

  Thus, for each pair of elastic members 10a, 10b, one elastic member (for example, 10a), on the other hand, corresponds to the protrusion of the guide rings 7a, 7b, depending on the direction of rotation of the guide rings 7a, 7b relative to the annular plate 21 It is configured to be supported by one side of the surfaces 14 a and 14 b of the zone 14 and to be supported by the phase matching member 25 on the other side. At this time, the other elastic member (for example, 10b) is configured to be supported on the one hand by the phase matching member 25 and on the other hand on one surface of the corresponding surfaces 23a and 23b of the annular plate 21. The

  FIG. 3 shows that the spring 10 a is partially compressed by the relative rotation of the phase matching member 25 and the annular plate 21. At rest, the elastic members 10a and 10b have substantially the same length.

  As can be seen from FIG. 6, the phase matching member 25 has a radially outer annular portion 26 from which a leg 27 extends radially inward. Each leg 27 has two opposing surfaces 27a, 27b that serve to support the elastic members 10a, 10b, which are inclined with respect to each other and with respect to the radial direction. The radially outer annular portion 26 has wide, or radially large, zones 28 disposed on opposite sides of the leg 27 in the circumferential direction. These zones 28 serve to support the winding of the ends of the elastic members 10a, 10b in the radial direction, particularly when the elastic members 10a, 10b are subjected to centrifugal force during operation. Thereby, during operation, the other windings are brought into contact with the annular portion 26 on the radially outer side of the annular plate 25 without contacting each other.

  The circumferential end of the zone 28 forms a shoulder or radial stop surface 29a, 29b.

  Further, a cylindrical protrusion 30 extends axially in front of each leg 27 at the position of the annular portion 26 on the radially outer side.

  During operation, the stop protrusions 24a and 24b of the leg 23 of the annular plate 21 can abut on the stop surfaces 29a and 29b of the shoulder 28 of the phase adjusting member 25, respectively. Further, during operation, the cylindrical projection 30 of the phase matching member 25 is configured to abut against the end portions 15a and 15b of the housing 15 of the guide ring 7b.

  Further, as shown in FIGS. 2 and 4, the phase matching member 25 can be coupled to a pendulum type damper means 31 for improving filtering between vibration and rotational non-periodicity. The pendulum type damper means 31 has a pendulum type mass body 32, and these mass bodies are movably attached to a support 33 that is rotationally coupled to the phase adjusting member 25.

  The protrusions 24a, 24b, the stop surfaces 29a, 29b, the cylindrical protrusion 30, and the housing ends 15a, 15b limit the compression of the elastic members 10a, 10b, and in the case of coil springs, Regardless of the mode of operation of the torque converter, it is arranged and sized so that the spring winding does not adhere during compression.

  FIG. 8 shows the torque converter according to the present invention in a position where the projections 24a, 24b are separated from the stop surfaces 29a, 29b and the projection 30 is separated from the ends 15a, 15b.

  In the case of the first operation shown in FIG. 9, the phase adjusting member 25 is rotated in the rotational direction (indicated by an arrow R in the figure) referred to as the reverse direction with respect to the guide rings 7a and 7b from the position shown in FIG. Turn. At this time, the movement of the phase matching member 25 can be limited by the protrusion 30 engaging the end 15b of the housing 15 of the guide ring 7b.

  In the case of the second operation shown in FIG. 10, the phasing member 25 and the annular plate 21 are moved to the end position where the projection 24a of the annular plate 21 and the abutting surface 29a of the phasing member 25 are abutted with each other. , Can swivel with each other. As previously mentioned, these protrusions 24a and these stop surfaces 29a are arranged and sized to limit compression of the elastic members 10a, 10b. Similarly, in the case shown in FIG. 10, the protrusion 30 can be stopped at the end 15 b of the housing 15.

  FIG. 11 shows the case of the third operation, in which the phase adjusting member 30 pivots forward (arrow D) with respect to the guide rings 7a and 7b from the position shown in FIG. The ring 7b is limited by the impact of the projection 30 on the end 15a of the housing 15 of the ring 7b.

  Finally, FIG. 12 shows the case of the fourth operation. In the phase adjusting member 25 and the annular plate 21, the protrusion 24b of the annular plate 21 and the abutting surface 29b of the phase adjusting member 25 are brought into contact with each other. Are pivotable to each other. Also in the case shown in FIG. 12, the protrusion 30 can be stopped at the end 15 a of the housing 15. At this time, torque is transmitted from the annular plate 21 to the guide rings 7a and 7b, and vice versa, via the projection 24b, the stop surface 29b, the projection 30 and the end 15a of the housing 15 while passing through the phase adjusting member 25. Communicated.

  As described above, the present invention includes the rotation of the guide rings 7a and 7b with respect to the phase alignment member 25, the rotation of the annular plate 21 with respect to the phase alignment member 25, and the rotation of the guide rings 7a and 7b with respect to the annular plate 21 indirectly. It proposes a torque transmission device which can be limited, for example in the form of a torque converter or a dual mass flywheel.

  Depending on the position of the various stop means, it is possible to control the angular movement of each of these elements, so that in particular, on the one hand, between the guide rings 7a, 7b and the phasing member 25. On the other hand, the compression of the elastic members 10a and 10b attached between the phase matching member 25 and the annular plate 21 is restricted, and damage is avoided.

  Furthermore, compared with the prior art, according to the present invention, the installation radius of the elastic member can be increased, and the effect of improving the quality of filtering realized can be obtained.

Claims (11)

  A torque transmission device for an automobile, which is attached between a torque input element (7a, 7b), a torque output element (21), and the torque input element (7a, 7b) and the torque output element (21). And at least one elastic member group (10a, 10b) acting against rotation with respect to the other of the torque input element (7a, 7b) and the torque output element (21). The elastic members (10a, 10b) of the group are arranged in series via a phase matching member (25) so that the elastic members (10a, 10b) of each group are phase-deformed with each other, and the torque output element (21) and the phase adjusting member (25), the first stopping means (24a, 29a) for limiting their relative rotation in the two opposite rotation directions (D, R) and the second stopping The torque input elements (7a, 7b) and the phasing member (25) limit their relative rotation in two opposite rotation directions (D, R). A third stopping means (15a, 30) and a fourth stopping means (15b, 30), wherein the third and fourth stopping means are on the phasing member (25) or At least one stop projection (30) formed on the torque input element (7a, 7b) and at least one formed on the torque input element (7a, 7b) or on the phasing member (25); Two arc-shaped elongated housings (15), and the stop projections (30) can be inserted into the housing (15) and abutted on the end portions (15a, 15b) of the housing (15). And the first, second, third and fourth Wherein the 衝止 means housing, said input element and output element, device characterized in that it is arranged so that it can contact the phasing ring in one end position.   The elastic members (10a, 10b) are compression coil springs, and the stopper means limits the compression of the springs (10a, 10b) so that the winding of the springs does not adhere during compression. The apparatus according to claim 1, wherein:   The group or each group of elastic members (10a, 10b) abuts on the one hand an annular plate (21) forming a torque output element or torque input element and on the other hand radii on both sides of the annular plate (21). Two guide rings (7a, 7b) extending in the direction and rotating relative to the annular plate, said guide rings (7a, 7b) forming a torque input element or torque output element The apparatus according to claim 1 or 2.   The phase adjusting member (25) has a radially outer annular portion (26), and the leg portion (27) extends radially inward from the annular portion to support the elastic members (10a, 10b). The device according to claim 1, wherein the device plays a role of:   The stop projection (30) is a front face of one of the leg portions (27) of the phase adjusting member (25) and is pivoted from the annular portion (26) radially outward of the phase adjusting member (25). 5. A device according to claim 4, wherein the device extends in a direction.   The annular plate (21) has a radially inner annular portion (22), and starting from the annular portion, the support leg (23) of the elastic member (10a, 10b) extends radially outward. The device according to claim 1, wherein the device plays a role of supporting the elastic member (10 a, 10 b).   The impacting means (24a, 24b, 29a, 29b) is in contact with the impacting means (24a, 24b) of the annular plate (21) against the impacting means (29a, 29b) of the phase adjusting member (25). 7 and 6, characterized in that it extends circumferentially on both sides of each leg (23, 27) of the annular plate (21) and the phasing member (25) as possible. Equipment.   At one predetermined position, the hitting means (24a, 24b, 29a, 29b) is connected to the hitting means (24a, 24b) of the annular plate (21). 29b) extends in the circumferential direction on both sides of the leg portions (23, 27) of the annular plate (21) and the phase adjusting member (25) so as to be able to come into contact with the annular projection (21). 30. Device according to claims 4 to 6, characterized in that 30) can likewise abut on one end (15a, 15b) of the housing (15) of the torque input element (7a, 7b).   9. Device according to any one of the preceding claims, characterized in that it has two guide rings (7a, 7b) which are secured to each other by riveting and / or welding in a radially outer peripheral position.   At least one of the guide rings (7a, 7b) (7b) has a deformable small protrusion (12) which can be bent on the other guide ring (7a) on the outer periphery in the radial direction, 10. The device according to claim 9, wherein the device is fixed securely.   The device according to claim 1, wherein the torque transmission device is a hydraulic torque converter.

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