CN210135204U

CN210135204U - Damping device for torque converter, torque converter and vehicle

Info

Publication number: CN210135204U
Application number: CN201921532353.0U
Authority: CN
Inventors: 殷英; 李茂辉; 李璐; 孙艳霞
Original assignee: Faroeco Torque Converter Nanjing Co Ltd
Current assignee: Faroeco Torque Converter Nanjing Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-03-10
Anticipated expiration: 2029-09-16

Abstract

The utility model provides a damping device, torque converter and vehicle for torque converter. The damping device includes: a first retaining plate having a first central aperture; a second holding plate having a second center hole, fixed to the first holding plate, rotating together with the first holding plate; at least one elastic element supported circumferentially between the first and second retaining plates; and a driven plate disposed between the first and second holding plates, circumferentially supporting at least one elastic element, receiving the torque transmitted from the first holding plate via the at least one elastic element, the first center hole of the first holding plate or the second center hole of the second holding plate having a rotation allowing section and a rotation restricting section, a side of the driven plate facing the first or second holding plate having at least one protrusion, the at least one protrusion rotating along the rotation allowing section by an angle when the driven plate rotates relative to the first holding plate, and being stopped by the rotation restricting section at an end of the angle formation.

Description

Damping device for torque converter, torque converter and vehicle

Technical Field

The utility model relates to a damping device, a torque converter and vehicle for torque converter.

Background

The hydraulic torque converter is composed of pump wheel, turbine wheel, guide wheel and damping mechanism, and is installed between engine and speed variator, and uses hydraulic oil as working medium to implement the functions of transmitting torque, changing speed and clutching. The turbine of the hydraulic torque converter is driven by the kinetic energy transmitted by the pump impeller to rotate, and simultaneously, the turbine converts the transmitted hydraulic energy into mechanical energy in the rotating process and transmits the mechanical energy to a transmission connected behind through an output component of the hydraulic torque converter. Part of the working oil flowing out of the turbine enters a circulating system of the hydraulic torque converter for heat dissipation, and part of the working oil passes through the guide wheel, converts part of pressure energy into kinetic energy and then returns to the inlet of the pump wheel. The working oil circularly flows in the circular space cavity of the hydraulic torque converter in such a way, so that the normal work of the hydraulic torque converter is formed.

The damper device of the torque converter is used to absorb the fluctuation of torque, and when the load suddenly becomes large, the spring of the damper device may be broken. To protect the spring, the range of motion of the spring needs to be limited. In the existing damping device, a protrusion and a separate groove are provided to achieve the limitation of the elastic movement range. However, such damping devices require separate slots to mate with the protrusions, increasing cost, and the protrusions tend to make "hard on hard" contact with the grooves, resulting in loud noise and risk damaging the protrusions or grooves.

Therefore, there is a need for a new damping device having a less costly and more reliable limit stop structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a damping device for torque converter, damping device includes: a first retaining plate having a first central aperture for receiving an input torque; a second holding plate having a second center hole, fixed to the first holding plate, rotatable together with the first holding plate; at least one elastic element supported circumferentially between the first and second retaining plates; a driven plate disposed between the first holding plate and the second holding plate and circumferentially supporting the at least one elastic element, capable of receiving a torque transmitted from the first holding plate via the at least one elastic element, the first center hole of the first holding plate or the second center hole of the second holding plate having a rotation allowing section and a rotation restricting section located between adjacent rotation allowing sections and formed continuously with the rotation allowing section, a side of the driven plate facing the first holding plate or the second holding plate having at least one protrusion, the rotation allowing section being farther from the rotation center than an outermost protrusion of the at least one protrusion, the rotation restricting section being closer to the rotation center than the outermost protrusion of the at least one protrusion such that when the driven plate is rotated relative to the first holding plate, the at least one protrusion is rotated by an angle along the rotation allowing section, at the end of this angle, is stopped by a rotation-limiting section.

Advantageously, the rotation allowing section is formed in an arc shape, and the rotation restricting section is formed in a straight line shape.

The limiting of the movement range of the spring is realized through the matching of the protrusion and the rotation allowing section and the rotation limiting section, the limiting is realized more gently, the damage to the protrusion is avoided, and the limiting is realized more reliably.

Advantageously, the at least one projection is provided in four, the first central bore or the second central bore having four rotation-permitting sections and four rectilinear rotation-restricting sections.

Advantageously, the at least one projection is provided in two, the first central bore or the second central bore having two rotation-permitting sections and two rotation-restricting sections provided between the two rotation-permitting sections.

Advantageously, said at least one projection is integral with said driven plate.

Advantageously, the first retaining plate has a first retaining portion formed by the first opening and the first flap, the second retaining plate has a second retaining portion formed by the second opening and the second flap, and the at least one resilient element is retained in the first retaining portion and the second retaining portion.

Advantageously, the driven plate has a third retaining portion in which the at least one resilient element is retained.

Advantageously, said at least one elastic element is a helical spring.

Advantageously, a turbine hub is fixed to the driven plate of the damping device, able to rotate with the driven plate.

On the other hand, the utility model also provides a torque converter, include as above damping device.

In yet another aspect, the present disclosure provides a vehicle including a torque converter as described above.

Drawings

The advantages and objects of the present invention will be better understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:

figure 1 shows an exploded view of a damping device according to the invention;

figure 2 shows a perspective view of a damping device according to the invention;

figure 3 shows a plan view of a damping device according to the invention;

figure 4 shows a perspective view of a driven plate of a damping device according to the invention

Fig. 5 shows an exemplary range of motion of the spring of the damping device.

FIG. 6 shows a plot of detent torque versus angle for FIG. 5.

Detailed Description

Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The terms "first direction", "second direction", "rotational direction", and the like herein are described with respect to the drawings of the present invention, unless otherwise specified. The term "sequentially comprising A, B, C, etc" merely indicates the order of the included elements A, B, C, etc. and does not exclude the possibility of including other elements between a and B and/or between B and C. The description of the first "and its variants is merely for the purpose of distinguishing the components and does not limit the scope of the invention, the" first component "may be written as" second component "or the like without departing from the scope of the invention.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to fig. 1 to 6.

Referring to fig. 1, an exploded view of a damping device according to the present invention is shown. The damping device includes a first holding plate 1 having a recess for receiving an input torque and a second holding plate 2 fixed to the first holding plate so as to rotate together with the first holding plate. For example, the second holding plate is riveted to the first holding plate by a plurality of rivets 6, but the second holding plate may also be fixed to the first holding plate in other ways as long as the second holding plate can rotate together with the first holding plate. The damping device further comprises at least one elastic element 3, for example a helical spring, which is supported circumferentially between the first and the second holding plate. In the present application, "circumferential" refers to a direction around the central rotational axis of the first holding plate 1, that is, at least one elastic element 3 is arranged around the central rotational axis of the first holding plate 1 and supported between the first holding plate and the second holding plate.

In this embodiment, the first retaining plate comprises a first retaining portion consisting of the first opening 11 and the first apron 12, and the second retaining plate comprises a second retaining portion consisting of the second opening 21 and the second apron 22, in which retaining portions the at least one elastic element is retained in the assembled state, as shown in fig. 2 and 3.

The damping device further comprises a driven plate 4, which is arranged between the first and second holding plates and supports the at least one elastic element in the circumferential direction, and which is able to receive the torque transmitted by the first holding plate via the at least one elastic element. As shown in fig. 4, the driven plate 4 includes a third opening that constitutes a third holding portion 41 that holds at least one elastic member, as shown in fig. 1 and 2.

The first retaining plate has a first central aperture 13 and the second retaining plate has a second central aperture 23. In the present embodiment, the first center hole 13 has a rotation permitting section 131 (formed in an arc shape in the present embodiment) and a rotation restricting section 132 (formed in a straight line shape in the present embodiment), and the side of the driven plate 4 facing the second holding plate has at least one protrusion 42, and the protrusion 42 is formed integrally with the driven plate, for example, by punching. The rotation restricting section is located between adjacent rotation permitting sections and formed continuously with the rotation permitting section, the rotation permitting section being farther from a center of rotation (i.e., a center of the center hole) than an outermost one of the at least one protrusion, the rotation restricting section being closer to the center of rotation than the outermost one of the at least one protrusion. When the driven plate 4 rotates relative to the first holding plate 1, the at least one projection 42 rotates along the rotation allowing section 231 by an angle that is stopped by the rotation restricting section 132 at the end of the angle formation. Since the position limitation is achieved by the cooperation of the protrusion with the rotation allowing section and the rotation limiting section, the position limitation effect can be achieved more gently than in the prior art.

In the present embodiment, the rotation allowing sections and the rotation restricting sections are respectively set to four, and the rotation restricting sections are provided in a straight line form, one rotation restricting section is provided between every two rotation allowing sections, and the number of the protrusions 42 is also set to 4. However, it should be understood that the number of the rotation allowing sections and the rotation limiting sections is not limited thereto, and the number of the protrusions is not limited thereto, and those skilled in the art will understand that the number of the rotation allowing sections and the rotation limiting sections may be set as desired, for example, the protrusions are set to two, the rotation allowing sections are also set to two, and the rotation limiting section is located between the two rotation allowing sections and can function as a stopper for the protrusions. The projection may also be set to three or five, the rotation allowing section may also be set to three or five, and the rotation restricting section is located between the two rotation allowing sections.

Alternatively, the second center hole 23 may have a rotation allowing section and a rotation restricting section, and the side of the driven plate 4 facing the second holding plate has at least one protrusion, so that the limit action is achieved by the engagement of the protrusion with the rotation allowing section and the rotation restricting section of the second center hole.

A turbine hub 5 is fixed to the driven plate 4 of the damping device, being able to rotate with the driven plate. The turbine hub 5 is in turn connected to an output shaft, not shown in the figures, for outputting torque.

The following is an example of the limiting effect of the present application. As shown in fig. 5 and 6, the stopping torque for the at least one elastic element is 660Nm, the slope K1 is 32 Nm/deg., and the maximum movement angle θ of the at least one elastic element is 660/32 — 20.6 ° according to the graph shown in fig. 6. As shown in fig. 5, the maximum angle of rotation of the projection from the neutral position, clockwise or counterclockwise, is 20.6 °, which is stopped by the rotation-limiting section at the end of the angle formation. It will be appreciated by those skilled in the art that the maximum angle of rotation of the projection from the neutral position, either clockwise or counterclockwise, is less than 45.

The damping device of the present invention has been described above, and the damping device is used for a torque converter, and a torque converter including such a damping device is usable for a vehicle. Through this damping device, can restrict the spring motion range more steadily and reliably, reduce the noise.

Moreover, the technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention to achieve the aim of the invention.

Claims

1. A damping device for a torque converter, the damping device comprising:

a first retainer plate (1) having a first center hole (13) for receiving an input torque;

a second holding plate (2) having a second center hole (23), fixed to the first holding plate (1), rotatable together with the first holding plate (1);

at least one elastic element (3) supported circumferentially between the first retaining plate (1) and the second retaining plate (2);

a driven plate (4) arranged between the first holding plate (1) and the second holding plate (2) and supporting the at least one elastic element (3) in the circumferential direction, capable of receiving the torque transmitted by the first holding plate (1) via the at least one elastic element (3),

characterized in that the first central hole (13) of the first holding plate (1) or the second central hole (23) of the second holding plate (2) has rotation-permitting sections (131) and rotation-restricting sections (132) located between adjacent rotation-permitting sections and formed continuously with the rotation-permitting sections, the side of the driven plate (4) facing the first holding plate (1) or the second holding plate (2) has at least one protrusion (42), the rotation-permitting segment is further from the center of rotation than an outermost projection of the at least one projection, the rotation restricting section is closer to the center of rotation than an outermost protrusion of the at least one protrusion, such that when the driven plate (4) is rotated relative to the first holding plate (1), the at least one projection (42) is rotated by an angle along the rotation allowing section (131), being stopped by the rotation limiting section (132) at the end of the angle.

2. The damper device according to claim 1, wherein the rotation allowing section is formed in a circular arc shape.

3. The damper device according to claim 1, wherein the rotation restricting section is formed linearly.

4. A damper device according to claim 1, wherein the at least one projection (42) is provided in four, and the first center hole (13) or the second center hole (23) has four rotation allowing sections and four linear rotation restricting sections.

5. A damping device according to claim 1, characterized in that the at least one protrusion (42) is provided in two, the first central bore (13) or the second central bore (23) having two rotation-permitting sections and two rotation-restricting sections provided between the two rotation-permitting sections.

6. A damping device according to claim 1, characterized in that said at least one protrusion (42) is integral with said driven plate (4).

7. A damping device according to claim 1, characterised in that the first retaining plate (1) has a first retaining portion formed by the first opening (11) and the first flap (12), the second retaining plate (2) has a second retaining portion formed by the second opening (21) and the second flap (22), and the at least one elastic element (3) is retained in the first retaining portion and the second retaining portion.

8. A damping device according to claim 7, characterised in that the driven plate (4) has a third retaining portion (41), in which third retaining portion (41) at least one resilient element (3) is retained.

9. A damping device according to claim 1, characterized in that said at least one elastic element (3) is a helical spring.

10. A damping device according to claim 1, characterised in that a turbine hub (5) is fixed to the driven plate (4) of the damping device, rotatable with the driven plate (4).

11. A torque converter including a damping device according to any one of the preceding claims.

12. A vehicle comprising a torque converter according to claim 11.