Torque transfer device, powertrain, and vehicle

Abstract

The present disclosure relates to a torque transmission device having a central axis direction, and comprising a primary side arranged around the central axis direction for receiving an input torque, a secondary side connected to the primary side and for outputting a torque, a torque limiting assembly comprising a primary side clamping plate and a secondary side clamping plate fixed to the secondary side, and a driven plate clamped between the primary side clamping plate and the secondary side clamping plate and configured to transmit torque from the primary side to the secondary side, and a thrust piece arranged between the primary side and the primary side clamping plate and positioned thereby along the central axis direction. The present disclosure also relates to a powertrain and a vehicle.

Description

Technical Field

[0001] This disclosure relates to a torque transmission device, a powertrain including the torque transmission device, and a vehicle including the powertrain. Background Technology

[0002] A double-mass flywheel is a common torque transmission device, typically located between the engine and clutch of a vehicle, used to reduce vibrations in the drivetrain. The primary mass of the flywheel is located on the engine side, and the secondary mass is located on the transmission side. An annular oil chamber connects the primary and secondary masses, housing a spring damper to integrate them as a single unit. A double-mass flywheel may include an inner torque limiter to restrict the amount of torque that can be transmitted, preventing overload and damage. Utility Model Content

[0003] The purpose of this disclosure is to provide a torque transmission device, a power transmission system, and a vehicle, wherein the torque transmission device not only achieves axial and radial positioning of the primary and secondary masses, but also has a simple structure, is easy to install, and is highly flexible.

[0004] The above objectives are achieved through the torque transmission device, powertrain, and vehicle described below.

[0005] On one hand, this disclosure provides a torque transmission device having a central axis direction and including: a primary side for receiving input torque; a secondary side connected to the primary side and for outputting torque; a torque limiting assembly including a primary side clamping plate and a secondary side clamping plate fixed to the secondary side, and a driven plate clamped between the primary side clamping plate and the secondary side clamping plate, and configured to transmit torque from the primary side to the secondary side; and a thrust member disposed between the primary side and the primary side clamping plate and positioned therebetween along the central axis direction. The thrust member enables axial positioning of the primary and secondary sides of the torque transmission device. The thrust member is simple in design, easy to manufacture, and flexible, resulting in high assembly flexibility for the entire torque transmission device.

[0006] The torque transmission device of the present disclosure according to the above aspect may also have one or more of the following features, individually or in combination.

[0007] In one embodiment, the thrust member abuts against the primary side clamping plate along the central axis.

[0008] In one embodiment, the primary side includes a primary flange, and the thrust member abuts against the primary flange along the central axis.

[0009] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, and the thrust member abuts against the pressure washer along the central axis.

[0010] The aforementioned direct-attachment assembly method results in a simple structure, convenient installation, easy adjustment, and flexible design.

[0011] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, and the thrust member is radially limited by the primary side clamping plate and the pressure washer. This allows for radial positioning of the primary side and the torque limiting assembly. The thrust member is simple in design, easy to manufacture, and flexible, resulting in high assembly flexibility for the entire torque transmission device.

[0012] In one embodiment, the thrust member has a body and a protrusion projecting from the body to form an L-shaped cross-section, the protrusion of the thrust member being limited by the end of the primary side clamping plate along the radial direction. This configuration allows for axial and radial positioning using a single thrust member, offering a simple structure, easy installation, and high flexibility.

[0013] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, the primary side clamping plate and the secondary side clamping plate are fixed to the secondary side by fasteners, and the thrust member is limited along the radial direction by the fasteners and the pressure washer.

[0014] In one embodiment, the pressure washer has a body and a protrusion extending from the body, and the thrust member is limited along the radial direction by the fastener and the protrusion of the pressure washer.

[0015] In one embodiment, the primary side clamping plate includes a body and a protrusion projecting from the body, and the thrust member is limited in the radial direction by the protrusion of the primary side clamping plate.

[0016] The above configuration makes full use of the components in the device to achieve radial positioning, which not only saves space and simplifies the structure, but also provides greater flexibility.

[0017] On the other hand, this disclosure also provides a torque transmission device having a central axis direction and including, disposed about the central axis direction: a primary side for receiving input torque; a secondary side connected to the primary side and including an output hub for outputting torque; a torque limiting assembly including a primary side clamping plate and a secondary side clamping plate fixed to the output hub, and a driven plate clamped between the primary side clamping plate and the secondary side clamping plate, and configured to transmit torque from the primary side to the secondary side; and a thrust member disposed between the primary side and the output hub and positioned thereby along the central axis direction. The thrust member allows for axial positioning of the primary and secondary sides of the torque transmission device. The thrust member is simple in design, easy to manufacture, and flexible, allowing the assembly of the entire torque transmission device to proceed without bearings, thus offering high flexibility.

[0018] According to another aspect of the present disclosure, the torque transmission device may also have one or more of the following features, individually or in combination.

[0019] In one embodiment, the thrust member abuts against the output hub along the central axis.

[0020] In one embodiment, the primary side includes a primary flange, and the thrust member abuts against the primary flange along the central axis.

[0021] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, and the thrust member abuts against the pressure washer along the central axis.

[0022] The aforementioned direct-attachment assembly method results in a simple structure, convenient installation, easy adjustment, and flexible design.

[0023] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, and the thrust member is radially limited by the primary side clamping plate and the pressure washer.

[0024] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, the primary side clamping plate and the secondary side clamping plate are fixed to the output hub by fasteners, and the thrust member is limited along the radial direction by the fasteners and the pressure washer.

[0025] In one embodiment, the pressure washer has a body and a protrusion extending from the body, and the thrust member is limited along the radial direction by the fastener and the protrusion of the pressure washer.

[0026] This allows for radial positioning of the primary side and the torque limiting component. The thrust element is simple to design, easy to manufacture, and flexible, resulting in high assembly flexibility for the entire torque transmission device.

[0027] In one embodiment, one of the pressure washer and the thrust member is provided with an anti-rotation protrusion, and the other is provided with an anti-rotation groove that mates with the anti-rotation protrusion.

[0028] In another aspect, this disclosure provides a torque transmission device having a central axis direction and comprising, about the central axis direction: a primary side for receiving input torque; a secondary side connected to the primary side and including an output hub for outputting torque; a torque limiting assembly including a primary side clamping plate and a secondary side clamping plate fixed to the output hub, and a driven plate clamped between the primary side clamping plate and the secondary side clamping plate, configured to transmit torque from the primary side to the secondary side; and a thrust member disposed between the primary side and the output hub and positioned therebetween along the central axis direction. The thrust member allows for axial positioning of the primary and secondary sides of the torque transmission device. The thrust member is simple in design, easy to manufacture, and flexible, resulting in high assembly flexibility for the entire torque transmission device.

[0029] The torque transmission device according to another aspect of the present disclosure may also have one or more of the following features, individually or in combination.

[0030] In one embodiment, the primary side includes a primary flange and a pressure washer fixed to the primary flange, and an elastic element is provided between the pressure washer and the thrust member to elastically bias the thrust member toward the output hub.

[0031] In one embodiment, the thrust member has a body and a protrusion projecting from the body to form an L-shaped cross-section, the body of the thrust member being limited along the radial direction by the primary side clamping plate and the pressure washer.

[0032] This configuration allows for different axial or radial positioning capabilities by adjusting the elastic bias force of the elastic element.

[0033] The torque transmission device of this disclosure according to the above-mentioned aspects may also have one or more of the following features, individually or in combination.

[0034] In one embodiment, at least one of the primary side clamping plate and the secondary side clamping plate has a fan-shaped segment. This design can reduce the weight of the torque limiting assembly and lower costs.

[0035] In one embodiment, the driven plate has a tapered cross-section. This prevents the driven plate from sliding under a defined torque.

[0036] In one embodiment, a first friction element is provided between the primary side clamping plate and the driven plate, and / or a second friction element is provided between the secondary side clamping plate and the driven plate.

[0037] In one embodiment, the diameter of the primary side clamping plate is different from the diameter of the secondary side clamping plate, and the thickness of the primary side clamping plate is different from the thickness of the secondary side clamping plate.

[0038] The above configuration makes the frictional contact more stable and the sliding torque more robust.

[0039] This disclosure also provides a powertrain system including the torque transmission device as described above.

[0040] This disclosure also provides a vehicle including the powertrain as described above. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments of this disclosure will be briefly described below. The drawings are merely illustrative of some embodiments of this disclosure and are not intended to limit the scope of all embodiments of this disclosure. In the drawings:

[0042] Figure 1 A cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0043] Figure 2 It shows that according to Figure 1 A partial cross-sectional view of the torque transmission device;

[0044] Figure 3 A schematic diagram of an anti-rotation protrusion and an anti-rotation groove of a torque transmission device according to an embodiment of the present disclosure is shown;

[0045] Figure 4 A partial cross-sectional schematic diagram of a torque limiting component of a torque transmission device according to an embodiment of the present disclosure is shown;

[0046] Figure 5 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0047] Figure 6 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0048] Figure 7 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0049] Figure 8 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0050] Figure 9 A cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0051] Figure 10 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0052] Figure 11 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0053] Figure 12 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0054] Figure 13 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0055] Figure 14 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0056] Figure 15 A partial cross-sectional view of a torque transmission device according to an embodiment of the present disclosure is shown;

[0057] Figure 16 A schematic diagram of a torque limiting component of a torque transmission device according to an embodiment of the present disclosure is shown;

[0058] Figure 17 A schematic diagram of a torque limiting component of a torque transmission device according to an embodiment of the present disclosure is shown; and

[0059] Figure 18 A schematic diagram of a torque limiting component of a torque transmission device according to an embodiment of the present disclosure is shown. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0061] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not necessarily indicate a quantity limitation. The terms “comprising,” “including,” or “having,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected” or “connected,” and similar terms are not limited to the physical or mechanical connection or connection shown in the drawings, but may include equivalent connections or connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0062] The following is for reference. Figures 1 to 18 This disclosure provides a detailed description of various embodiments of a torque transmission device for a vehicle's powertrain according to embodiments of the present disclosure.

[0063] Figure 1 A torque transmission device according to an embodiment of the present disclosure is shown, which can be applied to the powertrain of a vehicle according to the present disclosure. Figure 1 The diagram shown is a schematic cross-sectional view of the torque transmission device to illustrate its main components.

[0064] like Figure 1 As shown, the torque transmission device has a central axis direction A and includes a primary side 1, a secondary side 2, a torque limiting component 30, and a thrust member 6 arranged around the central axis direction A. Furthermore, the torque transmission device may also include components such as an elastic washer 8 and a hysteresis washer 9. The central axis direction A is the vertical direction shown in the figure, and... Figure 1 The central axis of the torque transmission device is shown in dashed lines, extending along the axial direction of the torque transmission shaft.

[0065] Primary side 1 receives input torque, such as input torque from a vehicle's engine, and may include a primary mass or a primary mass flywheel. Secondary side 2 is connected to primary side 1 and outputs torque, and may include a secondary mass or a secondary mass flywheel. For example, primary side 1 can be fixedly connected to a drive shaft via, for example, threaded fasteners, and secondary side 2 can be fixedly connected to a torque transmission shaft via, for example, insert teeth. Primary side 1 and the outer ring form a receiving cavity to receive the spring assembly 10, which acts as an accumulator. For example, primary side 1 includes a primary flange 11, which may have a generally disc-shaped body region and a can-shaped region at its end, where an additional mass may be disposed. For example, primary side 1 also includes a pressure washer 12 fixed to the primary flange 11. Secondary side 2 may include an output hub 21 for outputting torque.

[0066] The torque limiting assembly 30 includes a primary-side clamping plate 3 and a secondary-side clamping plate 4 fixed to the secondary side 2, and a driven plate 5 clamped between the primary-side clamping plate 3 and the secondary-side clamping plate 4, and is configured to transmit torque from the primary side 1 to the secondary side 2. For example, the primary-side clamping plate 3 and the secondary-side clamping plate 4 are fixed to the secondary side 2 by fasteners 7, which may be riveted fasteners. Figures 16 to 18 The diagram shows multiple holes, such as riveting holes, for the fastener 7 to pass through the primary side clamping plate 3 and the secondary side clamping plate 4. A frictional or force-locked connection is formed between the driven plate 5 and the secondary side 2 in the circumferential direction of the torque transmission device, the circumferential direction being a circular direction centered on the central axis.

[0067] like Figure 1 As shown, the thrust member 6 is disposed between the primary side 1 and the primary side clamping plate 3 and is positioned by it along the central axis direction A. The term "positioned along the central axis direction A" as used herein refers to axial positioning. For example, the thrust member 6 can be a plastic washer.

[0068] For example, such as Figure 2 As shown in the partially enlarged schematic diagram, the thrust member 6 abuts against the primary side clamping plate 3 along the central axis direction A. For example, the thrust member 6 abuts against the primary flange 11 along the central axis direction A. The two opposing surfaces of the thrust member 6 (i.e., the torque output side surface and the torque input side surface) abut against the primary side clamping plate 3 and the primary flange 11, respectively. Furthermore, the thrust member 6 is radially limited by the primary side clamping plate 3 and the pressure washer 12.

[0069] See Figure 2 The thrust member 6 has a body 61 and a protrusion 62 protruding from the body 61 to form an L-shaped cross-section, the cross-section being a cross-section in a plane formed in the radial and axial directions. The protrusion 62 of the thrust member 6 is limited by the end of the primary side clamping plate 3 in the radial direction. The protrusion 62 protrudes axially toward the torque output side.

[0070] See Figure 5 The thrust member 6 abuts against the primary side clamping plate 3 and the primary flange 11 along the central axis direction A, that is, the torque output side surface and the torque input side surface of the thrust member 6 abut against the primary side clamping plate 3 and the primary flange 11, respectively. Furthermore, the thrust member 6 is limited in the radial direction by fasteners 7 and pressure washers 12. For example, as... Figure 5 As shown, the thrust member 6 is radially limited by the sidewall of the fastener 7 near the primary side 1 and the sidewall of the pressure washer 12, as indicated by the gray arrow in the figure. For example, the thrust member 6 can abut against the sidewall of the pressure washer 12.

[0071] See Figure 6 In addition to abutting against the primary side clamping plate 3 along the central axis direction A, the thrust member 6 abuts against the pressure washer 12 fixed to the primary flange 11 along the central axis direction A. That is, the torque output side surface and the torque input side surface of the thrust member 6 abut against the primary side clamping plate 3 and the pressure washer 12, respectively. Furthermore, the thrust member 6 is limited in the radial direction by the fastener 7. For example, the thrust member 6 is limited in the radial direction by the side wall of the fastener 7 near the end of the primary side 1, as shown by the gray arrow in the figure.

[0072] See Figure 7 In addition to abutting against the primary-side clamping plate 3 along the central axis direction A, the thrust member 6 abuts against the pressure washer 12 fixed to the primary flange 11 along the central axis direction A. Specifically, the torque output side surface and the torque input side surface of the thrust member 6 abut against the primary-side clamping plate 3 and the pressure washer 12, respectively. Furthermore, the thrust member 6 is limited in the radial direction by the fastener 7 and the pressure washer 12. For example, as... Figure 7 As shown, the pressure washer 12 has a body 121 and a protrusion 122 protruding from the body 121. The thrust member 6 is radially limited by the fastener 7 and the protrusion 122 of the pressure washer 12, as indicated by the gray arrow in the figure. The thrust member 6 is radially limited by the sidewall of the fastener 7 near the end of the primary side 1 and the sidewall of the protrusion 122 of the pressure washer near the fastener 7. The protrusion 122 protrudes axially from the body 121 toward the torque output side.

[0073] See Figure 8In addition to abutting against the primary side clamping plate 3 along the central axis direction A, the thrust member 6 abuts against the pressure washer 12 fixed to the primary flange 11 along the central axis direction A. That is, the torque output side surface and the torque input side surface of the thrust member 6 abut against the primary side clamping plate 3 and the pressure washer 12, respectively. Furthermore, the thrust member 6 is radially limited by the primary side clamping plate 3 and the pressure washer 12. The primary side clamping plate 3 includes a body 31 and a protrusion 32 protruding from the body 31. The thrust member 6 is radially limited by the protrusion 32 of the primary side clamping plate 3, while the torque limiting assembly 30 can be radially limited by the pressure washer 12 via the fastener 7, as shown by the gray arrow in the figure. The protrusion 32 protrudes from the body 31 toward the torque input side.

[0074] The "radial direction" mentioned in this article refers to the horizontal direction perpendicular to the central axis direction A, for example... Figure 1 , 5 As shown in Figure -8, the direction is horizontally to the right or left from the central axis. Furthermore, the phrase "limited by a component" as used herein includes the case of separation from a component, meaning that the position is not fixed but can vary within a certain range. The above explanation also applies to the embodiments described below.

[0075] For example, the thrust member 6 is roughly in the shape of a circular tube, meaning its cross-section perpendicular to the central axis direction A can be an annular ring, thus possessing both an inner and outer diameter. Axial alignment can be achieved by adjusting the axial dimension of the thrust member 6. Radial alignment can be achieved by adjusting the radial dimension of the component that radially limits the thrust member 6. Figure 1 and 2 As shown, radial alignment is achieved by adjusting the inner diameter of the main body 61 of the thrust member 6, the outer diameter of the protrusion 62 of the thrust member 6, the inner diameter of the clamping plates (including the primary side clamping plate 3 and the secondary side clamping plate 4), and the outer diameter of the pressure washer 12. Figure 5 As shown, radial alignment is achieved by adjusting the diameter (including outer and inner diameter) of the thrust member 6, the inner diameter of the clamping plates (including the primary side clamping plate 3 and the secondary side clamping plate 4), and the outer diameter of the pressure washer 12. Figure 6 As shown, radial alignment is achieved by adjusting the outer diameter of the thrust member 6 and the installation position of the fastener 7. Figure 7 As shown, radial alignment is achieved by adjusting the diameter (including outer and inner diameter) of the thrust member 6, the mounting position of the fastener 7, and the outer diameter of the protrusion 122 of the pressure washer 12. Figure 8 As shown, radial alignment is achieved by adjusting the outer diameter of the thrust member 6 and the inner diameter of the protrusion 32 of the primary side clamping plate 3.

[0076] The thrust member allows for axial positioning of the primary and secondary sides, as well as radial positioning of the primary side and the torque limiting component. This eliminates the need for bearings in the assembly of the torque transmission device, resulting in a simple structure, convenient installation, and ease of manufacture. Furthermore, the thrust member used in the torque transmission device offers flexible design options, adaptable to different applications, thus enhancing the device's flexibility and competitiveness.

[0077] Figures 9 to 13 Torque transmission devices according to other embodiments of the present disclosure are shown, which can also be applied to the powertrain of a vehicle according to the present disclosure. Figures 9 to 13 The diagram shown is a schematic cross-sectional view of the torque transmission device to illustrate its main components. It should be noted that... Figures 9 to 13 The torque transmission device shown has the same characteristics as... Figure 1 The torque transmission devices shown have substantially the same components, and these components have the same reference numerals.

[0078] Similar to Figure 1 The torque transmission device has a central axis direction A and includes a primary side 1, a secondary side 2, a torque limiting assembly 30, and a thrust member 6 arranged around the central axis direction A. The primary side 1 is used to receive input torque, and the secondary side 2 is connected to the primary side 1 and used to output torque. For example, the primary side 1 includes a primary flange 11 and a pressure washer 12 fixed to the primary flange 11. The secondary side 2 may include an output hub 21 for outputting torque. The torque limiting assembly 30 includes a primary side clamping plate 3 and a secondary side clamping plate 4 fixed to the output hub 21, and a driven plate 5 clamped between the primary side clamping plate 3 and the secondary side clamping plate 4, and is configured to transmit torque from the primary side 1 to the secondary side 2. For example, the primary side clamping plate 3 and the secondary side clamping plate 4 are fixed to the output hub 21 by fasteners 7, which may be riveted fasteners.

[0079] like Figures 9 to 13 As shown, the thrust member 6 is disposed between the primary side 1 and the output hub 21 and is positioned by it along the central axis A. The term "positioned along the central axis A" as used herein refers to axial positioning.

[0080] See Figure 9 The thrust member 6 abuts against the output hub 21 along the central axis direction A. Furthermore, the thrust member 6 abuts against the primary flange 11 along the central axis direction A. For example, Figure 9 The two opposing surfaces of the thrust member 6 shown abut against the output hub 21 and the primary flange 11, respectively. Figure 9The thrust member 6 can have a cylindrical structure. The thrust member 6 is limited in the radial direction by the primary side clamping plate 3, for example by the end of the primary side clamping plate 3. Alternatively or additionally, the thrust member 6 is limited in the radial direction by the secondary side clamping plate 4.

[0081] See Figure 10 The thrust member 6 abuts against the output hub 21 along the central axis direction A. Furthermore, the thrust member 6 abuts against the pressure washer 12 along the central axis direction A. Figure 10 The black arrows in the diagram schematically illustrate the axial force acting on the thrust member 6 along the central axis direction A, which causes the thrust member 6 to be positioned axially. For example, the two opposing surfaces of the thrust member 6 abut against the output hub 21 and the pressure washer 12, respectively. Figure 10 The thrust member 6 can also have a cylindrical structure. Furthermore, the thrust member 6 is radially limited by the primary-side clamping plate 3 and the pressure washer 12. For example, on the torque limiting assembly side, i.e. Figure 10 On the left side, the thrust member 6 is limited by the end of the primary side clamping plate 3 in the radial direction; while on the central axis side, i.e. Figure 10 On the right side, the thrust member 6 is radially limited by the pressure washer 12. Alternatively, the thrust member 6 is radially limited by the secondary-side clamping plate 4. For example, the pressure washer 12 has a body 121 and a protrusion 122 projecting from the body 121, the protrusion 122 projecting along the central axis direction A toward the torque output side and a distance from the outer edge of the pressure washer 12 indicated by the circled 2 in the figure. The thrust member 6 is radially limited by the end of the primary-side clamping plate 3 and the protrusion 122 of the pressure washer 12.

[0082] See Figure 11 The thrust member 6 abuts against the output hub 21 and the pressure washer 12 along the central axis direction A. For example, the two opposing surfaces of the thrust member 6 abut against the output hub 21 and the pressure washer 12, respectively. Figure 10 The thrust member 6 can also have a cylindrical structure. Furthermore, the thrust member 6 is radially limited by the primary-side clamping plate 3. Additionally or alternatively, the thrust member 6 is radially limited by the secondary-side clamping plate 4. Furthermore, the torque limiting assembly 30 can be radially limited by the pressure washer 12, such as... Figure 11 As indicated by the light-colored arrow in the image.

[0083] Figure 12 and 13 Another variation is shown, with Figures 9 to 11 Compared to the example shown, Figure 12 and 13 The relative position of the torque limiting component 30 and the output hub 21 changes. Figure 12 and 13In the figure, the torque limiting component 30 is located on the torque output side of the output hub 21, that is, above it. Figures 9 to 11 In the figure, the torque limiting component 30 is located on the torque input side of the output hub 21, that is, at the bottom.

[0084] See Figure 12 The thrust member 6 abuts against the output hub 21 and the primary flange 11 along the central axis direction A, and is limited in the radial direction by the fastener 7 and the pressure washer 12. For example, the thrust member 6 is limited in the radial direction by the sidewall of the fastener 7 near the end of the primary side 1 and the sidewall of the pressure washer 12. For example, the thrust member 6 may abut against the radially outer sidewall of the pressure washer 12.

[0085] See Figure 13 The thrust member 6 abuts against the output hub 21 and the pressure washer 12 along the central axis direction A. The pressure washer 12 has a body 121 and a protrusion 122 projecting from the body 121. Two opposing surfaces of the thrust member 6 abut against the primary side surface of the output hub 21 and the secondary side surface of the body 121 of the pressure washer 12, respectively. The thrust member 6 is radially limited by the fastener 7 and the protrusion 122 of the pressure washer 12. For example, the protrusion 122 protrudes towards the torque output side along the central axis direction A. The thrust member 6 is radially limited by the sidewall of the end of the fastener 7 and the sidewall of the protrusion 122 of the pressure washer 12.

[0086] Similarly, in Figures 9 to 13 In the embodiments described, axial alignment can be achieved by adjusting the axial dimension of the thrust member. Radial alignment can be achieved by adjusting the radial dimension of the thrust member 6, which is a component of the radially limiting thrust member 6. Figures 9 to 13 The embodiments have as referenced Figures 1 to 8 The advantages described in the embodiments.

[0087] exist Figure 1-2 In the example shown in 5-13, one of the pressure washer 12 and the thrust member 6 may be provided with an anti-rotation protrusion 41, and the other may be provided with an anti-rotation groove 42 that mates with the anti-rotation protrusion 41. Figure 3 As shown, the pressure washer 12 is provided with multiple anti-rotation grooves 42, and the thrust member 6 is correspondingly provided with anti-rotation protrusions 41. The anti-rotation protrusions 41 can extend radially inward from the inner sidewall of the thrust member 6. The anti-rotation grooves 42 can be provided on the circumferential edge of the pressure washer 12. The anti-rotation protrusions and anti-rotation grooves can be integrally formed with the corresponding components.

[0088] Figure 14 and 15 Torque transmission devices according to other embodiments of the present disclosure are shown, which can also be applied to the powertrain of a vehicle according to the present disclosure. Figure 14 and15 The diagram shown is a schematic cross-sectional view of a portion of the torque transmission device to illustrate its main components. It should be noted that... Figure 14 and 15 The torque transmission device shown has the same characteristics as... Figure 1 The torque transmission devices shown have substantially the same components, and these components have the same reference numerals.

[0089] Similar to Figure 1 The torque transmission device has a central axis direction A and includes a primary side 1, a secondary side 2, a torque limiting assembly 30, and a thrust member 6 disposed around the central axis direction A. The primary side 1 is used to receive input torque, and the secondary side 2 is connected to the primary side 1 and used to output torque. For example, the primary side 1 includes a primary flange 11 and a pressure washer 12 fixed to the primary flange 11. The secondary side 2 may include an output hub 22 for outputting torque. The torque limiting assembly 30 includes a primary side clamping plate 3 and a secondary side clamping plate 4 fixed to the output hub 22, and a driven plate 5 clamped between the primary side clamping plate 3 and the secondary side clamping plate 4, and is configured to transmit torque from the primary side 1 to the secondary side 2. For example, the primary side clamping plate 3 and the secondary side clamping plate 4 are fixed to the output hub 21 by fasteners 7, which may be riveted fasteners.

[0090] The thrust member 6 is disposed between the primary side 1 and the output hub 21 and is positioned by it along the central axis direction A. For example... Figure 14 and 15 As shown, the torque output side surface of the thrust member 6 abuts against the output hub 21.

[0091] An elastic element 15 is provided between the pressure washer 12 and the thrust member 6 to elastically bias the thrust member 6 toward the output hub 21. For example, the elastic element 15 can be an elastic washer. One end of the elastic element 15 is placed on the pressure washer 12, and the other end is placed on the thrust member 6. By providing the elastic element, the desired axial stiffness can be provided, and different elastic elements can be selected to achieve different axial stiffnesses depending on the application.

[0092] like Figure 14 As shown, the thrust member 6 has a body 61 and a protrusion 62 projecting from the body 61 to form an L-shaped cross-section, the cross-section being a cross-section in a plane formed in the radial and axial directions. The protrusion 62 may extend in the radial direction. The body 61 of the thrust member 6 is limited in the radial direction by a secondary side clamping plate 4 and a pressure washer 12. Additionally or alternatively, the body 61 of the thrust member 6 is limited in the radial direction by a primary side clamping plate 3. The other end of the elastic element 15 is placed on the protrusion 62 of the thrust member 6.

[0093] like Figure 15As shown, in addition to the aforementioned protrusion 62, the thrust member 6 also has an additional protrusion 63 protruding from the body 61, which, together with the body 61, forms an L-shaped cross-section. The body 61 of the thrust member 6 is also limited along the radial direction by the primary side clamping plate 3 and the pressure washer 12.

[0094] Similarly, in Figures 14 to 15 In the example, axial alignment can be achieved by adjusting the axial dimension of the thrust member. Radial alignment can be achieved by adjusting the radial dimension of the component of the radially limiting thrust member 6. Additionally, different axial or radial positioning capabilities and appropriate damping can be achieved by adjusting the elastic biasing force of the elastic element. Figures 14 to 15 The embodiments have as referenced Figures 1 to 13 The advantages described in the embodiments.

[0095] In some examples, at least one of the primary side clamping plate 3 and the secondary side clamping plate 4 has a sector-shaped segment. For example... Figure 16 As shown, the primary side clamping plate 3 has a circular ring shape, and the secondary side clamping plate 4 has a fan-shaped section. In this text, "fan-shaped section" refers to the fan-shaped section of the circular ring. The secondary side clamping plate 4 may have two mutually symmetrical fan-shaped sections. For example... Figure 17 As shown, both the primary side clamping plate 3 and the secondary side clamping plate 4 have a fan-shaped section. Figure 18 As shown, a portion of the secondary-side clamping plate 4 has a fan-shaped section. This portion refers to the area excluding the riveted section. The riveted section is, for example, the inner annular portion of the secondary-side clamping plate 4, which has multiple riveting holes. Similarly, the primary-side clamping plate 3 may also have... Figure 18 A similar form to the secondary side clamping plate 4. This design reduces the weight of the torque limiting assembly and lowers costs.

[0096] In some examples, the driven plate 5 may have a tapered cross-section. For example, the dimensions of the driven plate 5 taper in the radial direction pointing towards the central axis. This causes the driven plate to function like an elastic washer, providing an axial load in the friction area under the action of the clamping plate, allowing the driven plate 5 to slide at a set torque.

[0097] In some examples, such as Figure 4 As shown, a first friction element 51 is provided between the primary side clamping plate 3 and the driven plate 5, and a second friction element 52 is provided between the secondary side clamping plate 4 and the driven plate 5. Of course, it is also possible for only the first friction element 51 or the second friction element 52 to exist.

[0098] In some examples, the diameter of the primary-side clamping plate 3 differs from the diameter of the secondary-side clamping plate 4, and the thickness of the primary-side clamping plate 3 differs from the thickness of the secondary-side clamping plate 4. For example, the diameter of the primary-side clamping plate 3 is smaller than the diameter of the secondary-side clamping plate 4, therefore the thickness (in the axial direction) of the primary-side clamping plate 3 can be smaller than the thickness of the secondary-side clamping plate 4. The term "diameter" as used herein refers to the outer diameter in the radial direction. Using clamping plates with smaller diameters and thinner thicknesses can reduce material costs and lighten the weight of the device.

[0099] Because the tapered driven plate contacts the friction components bonded to clamping plates of different diameters, the frictional contact is more stable and the sliding torque is more robust.

[0100] By applying the aforementioned thrust element to a dual-mass flywheel with an input torque limiter, a simple and convenient method is provided for the axial and radial mounting of the primary and secondary masses, eliminating the need for bearings and thus enabling its application in mixed-gear vehicles. Furthermore, the thrust element is easy to design and manufacture, allowing for flexible adjustments to suit different customer interfaces. In addition, the overall cost of the thrust element and torque transmission device is very competitive.

[0101] This disclosure also provides a powertrain including the torque transmission device as described above. The primary side of the torque transmission device is connected to the engine output shaft, and the secondary side is connected to the transmission input shaft. It should be understood that the powertrain of this disclosure also has the advantages described above regarding the torque transmission device.

[0102] This disclosure also provides a vehicle that includes the powertrain described above. The vehicle may be a gasoline-powered vehicle. It should be understood that the vehicle of this disclosure also possesses the advantages described above regarding the torque transmission device and powertrain.

[0103] The technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the invention, in order to achieve the purpose of this disclosure.

Claims

1. A torque transmission device, characterized in that, The torque transmission device has a central axis direction (A) and includes components arranged around the central axis direction (A): The primary side (1) is used to receive the input torque; The secondary side (2) is connected to the primary side (1) and is used to output torque; A torque limiting assembly (30) includes a primary-side clamping plate (3) and a secondary-side clamping plate (4) fixed to the secondary side (2), and a driven plate (5) clamped between the primary-side clamping plate (3) and the secondary-side clamping plate (4), and is configured to transmit torque from the primary side (1) to the secondary side (2); and A thrust member (6) is disposed between the primary side (1) and the primary side clamping plate (3) and is positioned thereon along the central axis direction (A).

2. The torque transmission device according to claim 1, characterized in that, The thrust member (6) abuts against the primary side clamping plate (3) along the central axis direction (A).

3. The torque transmission device according to claim 1, characterized in that, The primary side (1) includes a primary flange (11), and the thrust member (6) abuts against the primary flange (11) along the central axis direction (A).

4. The torque transmission device according to claim 1, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange, and the thrust member (6) abuts against the pressure washer (12) along the central axis direction (A).

5. The torque transmission device according to claim 1, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange. The thrust member (6) is limited in the radial direction by the primary side clamping plate (3) and the pressure washer (12).

6. The torque transmission device according to claim 5, characterized in that, The thrust member (6) has a body (61) and a protrusion (62) protruding from the body to form an L-shaped cross section, the protrusion (62) of the thrust member (6) being limited by the end of the primary side clamping plate (3) along the radial direction.

7. The torque transmission device according to claim 1, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange. The primary side clamping plate (3) and the secondary side clamping plate (4) are fixed to the secondary side (2) by fasteners (7). The thrust member (6) is limited in the radial direction by the fasteners (7) and the pressure washer (12).

8. The torque transmission device according to claim 7, characterized in that, The pressure washer (12) has a body (121) and a protrusion (122) protruding from the body, and the thrust member (6) is limited in the radial direction by the fastener (7) and the protrusion (122) of the pressure washer (12).

9. The torque transmission device according to claim 1, characterized in that, The primary side clamping plate (3) includes a body and a protrusion protruding from the body, and the thrust member (6) is limited in the radial direction by the protrusion of the primary side clamping plate (3).

10. A torque transmission device, characterized in that, The torque transmission device has a central axis direction (A) and includes components arranged around the central axis direction (A): The primary side (1) is used to receive the input torque; The secondary side (2) is connected to the primary side (1) and includes an output hub (21) for outputting torque. A torque limiting assembly (30) includes a primary-side clamping plate (3) and a secondary-side clamping plate (4) fixed to the output hub (21), and a driven plate (5) clamped between the primary-side clamping plate and the secondary-side clamping plate, and is configured to transmit torque from the primary side (1) to the secondary side (2); and A thrust member (6) is disposed between the primary side (1) and the output hub (21) and is positioned thereon along the central axis direction (A).

11. The torque transmission device according to claim 10, characterized in that, The thrust member (6) abuts against the output hub (21) along the central axis direction (A).

12. The torque transmission device according to claim 10, characterized in that, The primary side (1) includes a primary flange (11), and the thrust member (6) abuts against the primary flange (11) along the central axis direction (A).

13. The torque transmission device according to claim 10, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange, and the thrust member (6) abuts against the pressure washer (12) along the central axis direction (A).

14. The torque transmission device according to claim 10, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange. The thrust member (6) is limited in the radial direction by the primary side clamping plate (3) and the pressure washer (12).

15. The torque transmission device according to claim 10, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange. The primary side clamping plate (3) and the secondary side clamping plate (4) are fixed to the output hub (21) by fasteners (7). The thrust member (6) is limited in the radial direction by the fasteners (7) and the pressure washer (12).

16. The torque transmission device according to claim 15, characterized in that, The pressure washer (12) has a body (121) and a protrusion (122) protruding from the body, and the thrust member (6) is limited in the radial direction by the fastener (7) and the protrusion (122) of the pressure washer (12).

17. The torque transmission device according to any one of claims 4 to 8 and 13 to 16, characterized in that, One of the pressure washer (12) and the thrust member (6) is provided with an anti-rotation protrusion (41), and the other is provided with an anti-rotation groove (42) that cooperates with the anti-rotation protrusion.

18. A torque transmission device, characterized in that, The torque transmission device has a central axis direction (A) and includes components arranged around the central axis direction (A): The primary side (1) is used to receive the input torque; The secondary side (2) is connected to the primary side (1) and includes an output hub (21) for outputting torque. The torque limiting assembly (30) includes a primary side clamping plate (3) and a secondary side clamping plate (4) fixed to the output hub (21), and a driven plate (5) clamped between the primary side clamping plate and the secondary side clamping plate, and is configured to transmit torque from the primary side to the secondary side. as well as A thrust member (6) is disposed between the primary side (1) and the output hub (21) and is positioned thereon along the central axis direction (A).

19. The torque transmission device according to claim 18, characterized in that, The primary side (1) includes a primary flange (11) and a pressure washer (12) fixed to the primary flange. An elastic element (15) is provided between the pressure washer (12) and the thrust member (6) to elastically bias the thrust member (6) toward the output hub (21).

20. The torque transmission device according to claim 19, characterized in that, The thrust member (6) has a body (61) and a protrusion (62) protruding from the body to form an L-shaped cross section. The body (61) of the thrust member (6) is limited in the radial direction by the primary side clamping plate (3) and the pressure washer (12).

21. The torque transmission device according to any one of claims 1 to 16 and 18 to 20, characterized in that, At least one of the primary side clamping plate (3) and the secondary side clamping plate (4) has a sector-shaped section.

22. The torque transmission device according to any one of claims 1 to 16 and 18 to 20, characterized in that, The driven plate (5) has a tapered cross section.

23. The torque transmission device according to any one of claims 1 to 16 and 18 to 20, characterized in that, A first friction element (51) is provided between the primary side clamping plate (3) and the driven plate (5), and / or a second friction element (52) is provided between the secondary side clamping plate (4) and the driven plate (5).

24. The torque transmission device according to any one of claims 1 to 16 and 18 to 20, characterized in that, The diameter of the primary side clamping plate (3) is different from the diameter of the secondary side clamping plate (4), and the thickness of the primary side clamping plate (3) is different from the thickness of the secondary side clamping plate (4).

25. A power transmission system, comprising a torque transmission device as claimed in any one of claims 1 to 24.

26. A vehicle comprising the powertrain as described in claim 25.

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