Play elimination device and torque damping device

Abstract

The present disclosure relates to a kind of cooperation gap elimination device and torque damping device.The cooperation gap elimination device includes hub, including first internal gear and first slot, first slot is communicated with the axial end surface and radial inner wall of hub, first slot is located between two first internal gear along the circumferential direction;The radial outer end of elastic member is torsionally connected with hub;Rotary plate includes second internal gear and the second slot that passes through rotary plate axially, rotary plate is torsionally connected in the radial inner end of elastic member, in the free state of elastic member, second internal gear is circumferentially staggered with first internal gear;After control pin is inserted into first slot and second slot, the radial inner end of elastic member is twisted to align second internal gear with first internal gear in circumferential direction, by the radial displacement of control pin, control pin is radially separated from second slot, the radial inner end of elastic member is rotated and drives second internal gear and first internal gear to be staggered again in circumferential direction, and it is contacted with the outer wall of the external gear of input shaft, to eliminate the cooperation gap between hub and input shaft.

Description

Technical Field

[0001] This invention relates to the field of vehicle vibration reduction technology, and more particularly to a device for eliminating fitting gaps in torque damping devices. Background Technology

[0002] Torque damping devices achieve effective transmission of power torque through the engagement of the internal splines of the wheel hub and the external splines of the transmission input shaft. When the torque damping device is installed inside the gearbox, there is usually a certain clearance (also known as tooth clearance) between the internal splines of the wheel hub and the external splines of the transmission input shaft. The size of the clearance directly affects the transmission efficiency and lifespan between the wheel hub and the input shaft.

[0003] Smaller clearance reduces the likelihood of surface crushing and excessive wear, resulting in higher transmission efficiency and superior mechanical performance. Conversely, larger clearance leads to insufficient contact between the internal and external splines, increasing the risk of vibration during traction control. This vibration not only affects transmission efficiency but also causes NVH (noise, vibration, and harshness) problems.

[0004] However, inadequate tolerance control, material defects, or insufficient machining precision during manufacturing can all lead to excessive clearances. Furthermore, human error or insufficient tooling precision during assembly can also cause clearances to exceed design requirements. Therefore, improving the clearance between the internal splines of the wheel hub and the external splines of the transmission input shaft, and enhancing the transmission efficiency of the torque damping device, are urgent technical problems that need to be solved. Summary of the Invention

[0005] To overcome the problems existing in the related technologies, this disclosure provides a device for eliminating gaps in the fit and a device for reducing torque vibration.

[0006] According to a first aspect of the present disclosure, a clearance elimination device is provided, comprising: a hub including a first internal gear and a first groove, the first groove communicating with the axial end face and radial inner wall of the hub, the first groove being located circumferentially between two adjacent first internal gears; an elastic member, the radial outer end of the elastic member being torsionally connected to the hub; a rotating plate including a second internal gear and a second groove axially penetrating the rotating plate, the rotating plate being torsionally connected to the radial inner end of the elastic member, wherein in the free state of the elastic member, the second internal gear of the rotating plate is circumferentially offset from the first internal gear of the hub; and a control pin, which, after being inserted into the first groove and the second groove, causes the radial inner end of the elastic member to twist to align the second internal gear with the first internal gear circumferentially, wherein, by radially moving the control pin outward, the control pin is radially disengaged from the second groove, the radial inner end of the elastic member rotates and causes the second internal gear of the rotating plate to be circumferentially offset from the first internal gear of the hub again.

[0007] In some embodiments, the control pin includes: an axial portion located radially movable within the first groove, the radial inner wall of the axial portion having a protrusion; a radial portion, one axial side of which abuts against the axial end face of the hub, and a locking block provided on the other axial side of the radial portion, wherein when the protrusion of the axial portion radially protrudes out of the first groove, the locking block is located within the second groove, and the second internal gear is circumferentially aligned with the first internal gear; when the control pin moves radially outward, causing the protrusion of the axial portion to retract into the first groove, the locking block radially disengages from the second groove, and the second internal gear is circumferentially offset from the first internal gear.

[0008] In some embodiments, the protrusion has a curved surface extending in an axial direction.

[0009] In some embodiments, the clearance elimination device further includes a fixing plate, which is axially connected between the axial end face of the hub and the radial outer end of the elastic element, such that the elastic element is axially spaced from the axial end face of the hub, and the rotating plate is axially located between the hub and the elastic element.

[0010] In some embodiments, the fixing plate includes a first plate and a second plate that are axially offset. The first plate is located at the radially inner end and is fixedly connected to the axial end face of the hub. The second plate is located at the radially outer end and is fixedly connected to the radially outer end of the elastic member. The radially inner end of the first plate is provided with a third groove that is the same width as the first groove of the hub and circumferentially aligned. The third groove accommodates the radial portion of the control pin. When the control pin moves radially outward, the radially inner wall of the third groove abuts against the radially outer wall of the radial portion of the control pin.

[0011] In some embodiments, the rotating plate is torsionally connected to the radial inner end of the elastic member by a first fastener, and the fixed plate is provided with a clearance hole on the radial inner side to avoid the cap structure of the first fastener on the other side of the axial direction of the rotating plate.

[0012] In some embodiments, the rotating plate is provided with a limiting groove, which is located radially outside the second groove and communicates with the second groove. The circumferential width of the limiting groove is greater than that of the second groove. When the control pin moves radially outward, the locking block of the radial portion radially disengages from the second groove, and the rotating plate rotates so that the locking block abuts against the groove wall of the limiting groove.

[0013] In some embodiments, the number of the second internal gears of the rotating plate is less than or equal to the number of the first internal gears of the hub.

[0014] In some embodiments, the elastic element is a spoke spring, the spoke spring comprising: an outer connecting ring for anti-torsional connection with the hub; an inner connecting ring for anti-torsional connection with the rotating plate; and a plurality of spokes, the plurality of spokes extending radially and elastically deformable and connected between the outer connecting ring and the inner connecting ring.

[0015] In some embodiments, a plurality of spoke springs are provided, and the plurality of spoke springs are stacked axially.

[0016] According to a second aspect of the present disclosure, the present disclosure provides a torque damping device, including the fitting clearance elimination device described in the first aspect.

[0017] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: by controlling the radial movement of the control pin, the first internal gear and the second external gear are controlled to be misaligned or aligned, so that when the first internal gear of the hub is engaged with the external gear of the input shaft, the second internal gear of the rotating plate is circumferentially misaligned with the first internal gear of the hub and abuts against the outer wall of the external gear of the input shaft, thereby eliminating the engagement clearance between the first internal gear of the hub and the external gear of the input shaft and improving NVH performance. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a cross-sectional schematic diagram illustrating the engagement of a torque damping device and an input shaft according to an exemplary embodiment;

[0020] Figures 2 to 6 These are three-dimensional structural diagrams of the hub, rotating plate, control pin, fixing plate, and spoke spring of the clearance elimination device.

[0021] Figure 7 This is a schematic diagram of the various structures included in a fitting gap elimination device according to an exemplary embodiment;

[0022] Figure 8 This is a schematic diagram showing the angle at which the second internal gear of the rotating plate and the first internal gear of the hub are offset in the circumferential direction when the elastic element is in a free state.

[0023] Figure 9 This is a partial three-dimensional sectional view of the structure after the control pins are inserted into the first and second slots;

[0024] Figure 10 yes Figure 9 A schematic diagram showing the second internal gear of the rotating plate after the control pin is inserted into the first and second slots, aligned circumferentially with the first internal gear of the hub;

[0025] Figure 11 This is a partial assembly diagram of the first groove of the wheel hub, the second groove of the rotating plate, the third groove of the fixed plate, and the control pin.

[0026] Figure 12 This is a schematic diagram showing the contact between the axial protrusion of the transmission input shaft and the control pin.

[0027] Figure 13 This is a schematic diagram showing the transmission input shaft fully inserted into the wheel hub;

[0028] Figure 14 yes Figure 12 A schematic diagram showing the contact between the second internal gear of the rotating plate and the external gear of the transmission input shaft. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] In this invention, unless otherwise specified, axial A, radial R, and circumferential W refer to the axial A, radial R, and circumferential W of the torque damping device, respectively; one axial side refers to... Figure 1 The right side of the axis refers to the other side of the axis. Figure 1 The left side of the middle; radially outer side refers to the radially away from the left. Figure 1 On the side of the central axis O ( Figure 1 The upper side of the center axis O), the radial inner side refers to the side that is radially closer to the central axis O. Figure 1 (Lower side of the middle). Additionally, "transmission connection" refers to the ability to transmit driving force / torque between two components, which can be directly connected or achieved through various transmission mechanisms or connection structures. The term "torsional connection" refers to a connection between two elements that does not rotate relative to each other, which can be achieved via a press fit (i.e., interference fit) or by integrally forming the two mentioned components. Those skilled in the art will understand the specific meaning of the above terms in this invention as appropriate.

[0031] To address the aforementioned technical problems, this disclosure provides a clearance elimination device 100. The clearance elimination device 100 can also be applied between two sleeves and a drive shaft that are connected by gear meshing. In this embodiment, the clearance elimination device 100 is suitable for installation in a torque damping device 200. When the hub of the torque damping device 200 meshes with the input shaft 300 of the transmission, the clearance elimination device 100 eliminates the tooth backlash between the external gear of the input shaft 300 and the internal gear of the hub.

[0032] like Figure 7 As shown, the hub 10 may be part of the clearance elimination device 100, which may also include at least an elastic element 20, a rotating plate 30, and a control pin 40.

[0033] like Figure 2 As shown, the hub 10 is sleeve-shaped, and a first internal gear 11 is provided on the radial inner wall of the hub 10. The first internal gear 11 is used to cooperate with the external gear 301 of the transmission input shaft 300 (e.g., Figure 14 (As shown) to transmit power torque. The hub 10 may also include a first groove 12, which communicates with the axial end face and radial inner wall of the hub 10, and the first groove 12 is located circumferentially W between two adjacent first internal gears 11. Viewed from the axial end face on the other side of the hub 10, i.e. from Figure 2 Viewed from the right side of the hub 10, the first groove 12 is elongated in the radial direction R, and the radial height of the first groove 12 is greater than its circumferential width.

[0034] The elastic element 20 is circumferentially elastically deformable and connected between the hub 10 and the rotating plate 30. The elastic deformation of the elastic element 20 allows the rotating plate 30 to rotate relative to the hub 10 within a certain angular range. The radially outer end of the elastic element 20 is torsionally connected to the axial end face of the hub 10, and the radially inner end of the elastic element 20 is torsionally connected to the rotating plate 30.

[0035] like Figure 3 and Figure 7 As shown, the rotating plate 30 has a plate-like structure and is disposed on one axial side of the hub 10, as... Figure 2 and Figure 3 As shown, the rotating plate 30 may include a second internal gear 31 and a second groove 32 axially penetrating the rotating plate 30. The opening of the second groove 32 faces the radially outer end of the rotating plate 30. The shape and size of the second internal gear 31 are the same as those of the first internal gear 11. Figure 8As shown, when the elastic element 20 is in a free state, that is, when the elastic element 20 is not restrained in the circumferential direction W, the second groove 32 of the rotating plate 30 located at the radial inner end of the elastic element 20 is circumferentially misaligned with the first groove 12 of the hub 10, so that the second internal gear 31 of the rotating plate 30 is also circumferentially misaligned with the first internal gear 11 of the hub 10, as shown. Figure 8 For example, the second internal gear 31 is offset clockwise relative to the first internal gear 11, and the offset gap is 1°.

[0036] The circumferential offset angle between the second groove 32 of the rotating plate 30 and the first groove 12 of the hub 10 and the circumferential offset angle between the second internal gear 31 of the rotating plate 30 and the first internal gear 11 of the hub 10 must be the same, so as to ensure that when the second groove 32 of the rotating plate 30 and the first groove 12 of the hub 10 are circumferentially aligned, the second internal gear 31 of the rotating plate 30 and the first internal gear 11 of the hub 10 can also be circumferentially aligned.

[0037] It should be noted that when the elastic element 20 is in a free state, the misalignment gap 1° between the second internal gear 31 and the first internal gear 11 is greater than the fit gap between the first internal gear 11 of the hub 10 and the external gear 301 of the transmission input shaft 300, for example, the fit gap = 0.5°.

[0038] In some embodiments, the number of second internal gears 31 of the rotating plate 30 may be the same as the number of first internal gears 11 of the hub 10. In this embodiment, as... Figure 2 and Figure 3 As shown, the number of second internal gears 31 is less than the number of first internal gears 11 in the hub 10. The smaller number of second internal gears 31 saves material and reduces the alignment accuracy requirements.

[0039] like Figure 9 As shown, when the control pin 40 is inserted into the first groove 12 and the second groove 32 along the axial direction A, the control pin 40 is used to constrain the second groove 32 of the rotating plate 30 to be circumferentially aligned with the second groove 32 of the hub 10 (e.g., Figure 10 As shown), the constraint force causes the radial inner end of the elastic member 20 to undergo elastic deformation in the circumferential direction relative to the radial outer end of the elastic member 20, and the radial inner end of the elastic member 20 to twist, thereby aligning the second internal gear 31 with the first internal gear 11 in the circumferential direction, so as to facilitate the smooth insertion of the input shaft 300, and to enable the external gear 301 of the input shaft 300 to be smoothly inserted into the tooth groove of the first internal gear 11 of the hub 10.

[0040] like Figure 2As shown, the first groove 12 of the hub 10 is elongated in the radial direction. The radial height of the first groove 12 allows the control pin 40 to move radially within the first groove 12. By controlling the radial outward movement of the control pin 40, one end of the control pin 40 can be radially disengaged from the second groove 32 of the rotating plate 30. The radial inner end of the elastic member 20 is no longer constrained. The radial inner end of the elastic member 20 rotates and drives the second internal gear 31 of the rotating plate 30 to be misaligned again with the first internal gear 11 of the hub 10 in the circumferential direction W.

[0041] like Figures 12 to 14 As shown, during the gradual engagement of the external gear 301 of the input shaft 300 and the first internal gear 11 of the hub 10, the tooth tip of the external gear 301 gradually contacts and abuts against the protrusion 43 of the axial portion 41 below the control pin 40. By radially lifting the protrusion 43, the axial portion 41 of the control pin 40 gradually moves radially outward, thereby releasing the contact between the locking block 44 of the radial portion 42 of the control pin 40 and the second groove 32 of the rotating plate 30. This causes the radial inner end of the elastic member 20 to no longer be restrained. The rotation of the elastic member 20 causes the second internal gear 31 of the rotating plate 30 to be circumferentially offset from the first internal gear 11 of the hub 10. The second internal gear 31 of the rotating plate 30 then abuts against the outer wall of the external gear 301 of the input shaft 300, thereby eliminating the engagement gap between the first internal gear 11 of the hub 10 and the external gear 301 of the input shaft 300.

[0042] Eliminating the clearance not only improves the accuracy and efficiency of power transmission between the hub 10 and the input shaft 300, but also significantly reduces vibration and noise caused by the clearance, improves the NVH performance of the entire torque damping device, and enhances the stability and reliability of the torque damping device.

[0043] In this embodiment, as Figure 2 As shown, the hub 10 is provided with a plurality of first grooves 12 at equal intervals along the circumferential direction W. Correspondingly, the rotating plate 30 is also provided with a plurality of second grooves 32 at equal intervals along the circumferential direction W. The number of second grooves 32 is equal to the number of first grooves 12. The number of control pins 40 is equal to the number of first grooves 12 and second grooves 32, so that the plurality of control pins 40 are evenly distributed in the circumferential direction.

[0044] Thus, when the control pins 40 constrain the rotating plate 30, the multiple control pins 40 evenly distributed circumferentially ensure that the rotating plate 30 is subjected to a uniform constraint force in the circumferential direction W, guaranteeing that the second internal gear 31 of the rotating plate 30 and the first internal gear 11 of the hub 10 are precisely aligned in the circumferential direction W, which facilitates the smooth insertion of the external gear 301 into the input shaft 300. The radially inner end of the elastic element 20 is also subjected to a uniformly distributed elastic force in the circumferential direction, avoiding the risk of damage due to local overload. The uniform distribution of the multiple control pins 40 makes it more stable during high-speed operation, reducing the risk of dynamic imbalance.

[0045] In some embodiments, such as Figure 4 As shown, the control pin 40 includes an axial portion 41 and a radial portion 42. The radial portion 42 is connected to the outer axial end of the axial portion 41 and extends radially outward. The control pin 40 is generally L-shaped. The radial portion 42 can be integrally formed with the axial portion 41.

[0046] The axial portion 41 is elongated columnar, and a protrusion 43 is provided on the radial inner wall of the axial portion 41. The axial portion 41 of the control pin 40 can move radially within the first groove 12, but cannot move circumferentially within the first groove 12. The radial height of the first groove 12 is greater than the radial height of the axial portion 41, and the radial height of the first groove 12 allows the axial portion 41 of the control pin 40 to move radially outward. At the same time, the protrusion 43 can also be hidden in the first groove 12 along the radial direction R, so that the protrusion 43 of the axial portion 41 cannot protrude radially from the radial inner wall of the hub 10.

[0047] like Figure 9 As shown, after the axial part 41 is inserted into the first groove 12, the radial height of the radial part 42 is greater than the radial height of the first groove 12, so that the radial outer end of the axial side of the radial part 42 can abut against the axial end face of the hub 10, which is used to restrict the axial part 41 from moving axially away from the rotating plate 30.

[0048] A locking block 44 is provided on the other side of the radial portion 42. The width of the locking block 44 can be slightly smaller than the width of the second groove 32 of the rotating plate 30, so that the locking block 44 can be locked into the second groove 32 and is not easily dislodged from the second groove 32. As can be seen from the above, the axial portion 41 of the control pin 40 is located in the first groove 12 of the hub 10. When the control pin 40 overcomes the elastic force of the elastic member 20, and the locking block 44 of the radial portion 42 is also locked into the second groove 32 of the rotating plate 30 at the same time, the second internal gear 31 of the rotating plate 30 and the first internal gear 11 of the hub 10 can be aligned in the circumferential direction W.

[0049] At this time, the elastic force of the elastic element 20 causes the rotating plate 30 to have a tendency to rotate relative to the hub 10 (e.g., Figure 10 (As shown in the clockwise direction), therefore, a circumferential preload is generated between the rotating plate 30 and the hub 10. Meanwhile, as... Figure 9 and Figure 10 As shown, the protrusion 43 of the axial portion 41 of the control pin 40 protrudes radially from the first groove 12. Since the first groove 12 is located circumferentially between two adjacent first internal gears 11, when the first internal gear 11 of the hub 10 engages with the external gear 301 of the input shaft 300, the protrusion 43 will be used to contact and abut against the tooth tip of the external gear 301 of the input shaft 300.

[0050] like Figure 12As shown, during the gradual insertion of the external gear 301 of the input shaft 300, the axial portion 41 of the drive control pin 40 is gradually moved radially outward within the first groove 12 by contacting and abutting against the protrusion 43 of the axial portion 41. Finally, after the external gear 301 of the input shaft 300 is fully inserted into the hub 10, the protrusion 43 of the axial portion 41 is completely hidden radially within the first groove 12 (as shown). Figure 13 (As shown). The axial portion 41 moves radially to a greater height than the second groove 32 within the first groove 12, so that the locking block 44 of the radial portion 42 can completely disengage radially from the second groove 32.

[0051] At this point, the radial inner end of the elastic element 20 is no longer subject to circumferential constraint, and the circumferential preload between the radial inner end of the elastic element 20 and the hub 10 causes the second internal gear 31 of the rotating plate 30 and the first internal gear 11 of the hub 10 to be misaligned again in the circumferential direction. Figure 14 As shown, the second internal gear 31 of the rotating plate 30 abuts against the tooth wall of the external gear 301 of the input shaft 300, thereby ensuring that the fit clearance between the first internal gear 11 of the hub 10 and the external gear 301 of the input shaft 300 is effectively eliminated, improving the accuracy and efficiency of power transmission between the hub 10 and the input shaft 300, reducing vibration and noise caused by the fit clearance, and improving the NVH performance of the entire torque damping device.

[0052] In some embodiments, such as Figure 3 and Figure 11 As shown, the rotating plate 30 is also provided with a limiting groove 33, which is located radially outside the second groove 32 and communicates with the second groove 32. The radially outer end of the limiting groove 33 can also communicate with the radially outer end of the rotating plate 30. The circumferential width of the limiting groove 33 is greater than that of the second groove 32. When the external gear 301 of the input shaft 300 pushes the axial part 41 of the control pin 40 radially outward through the protrusion 43, the locking block 44 of the radial part 42 of the control pin 40 radially disengages from the second groove 32, and the rotating plate 30 rotates under the elastic force of the elastic element 20 (e.g., Figure 10 (In the clockwise direction shown), the groove wall of the limiting groove 33 of the rotating plate 30 can abut against the locking block 44 of the radial part 42, thereby limiting the rotation angle of the rotating plate 30. This prevents the rotating plate 30 from rotating too much during instantaneous release, which could cause the elastic element 20 to break or fail due to excessive force. For example, when the elastic element 20 is a spoke spring, it can prevent the spokes 23 of the spoke spring from breaking due to excessive force.

[0053] The cross-section of the first groove 12 matches the cross-sectional shape of the axial portion 41. In this embodiment, the axial portion 41 is square, and the first groove 12 is a long and narrow square groove. This avoids unnecessary rotation of the axial portion 41 of the control pin 40 within the first groove 12, thereby better constraining the circumferential alignment of the second internal gear 31 of the rotating plate 30 and the first internal gear 11 of the hub 10, which is beneficial for the insertion of the transmission input shaft 300. It should be noted that in some other embodiments, the cross-sections of the axial portion 41 and the first groove 12 can be of any shape, such as semicircular, trapezoidal, pentagonal, hexagonal, etc., and the specific shape is not limited here.

[0054] In some embodiments, such as Figure 4 and Figure 9 As shown, the protrusion 43 has a curved surface extending along the axial direction A. This curved surface can reduce the resistance during the gradual insertion of the external gear 301 of the transmission input shaft 300, making the assembly of the transmission input shaft 300 smoother. The curved surface can also significantly reduce the hard impact between the tooth tip of the external gear 301 and the protrusion 43, reducing wear and damage caused by hard contact. By reducing hard impact, the vibration and noise during the meshing of the first internal gear 11 of the hub 10 and the external gear 301 of the input shaft 300 are also significantly reduced, improving NVH performance. By reducing impact and wear, the service life of the control pin 40 can also be effectively extended, reducing the frequency of maintenance and replacement, and saving costs.

[0055] In some embodiments, such as Figure 9 As shown, the clearance elimination device 100 also includes a fixing plate 50, which is connected along the axial direction A between the axial end face of the hub 10 and the radial outer end of the elastic element 20. Since the axial end face area of ​​the hub 10 is relatively small, in order to ensure a firm connection between the radial outer end of the elastic element 20 and the hub 10, one end of the fixing plate 50 is typically connected to the axial end face of the hub 10, and the other end is connected to the elastic element 20, thus connecting the axial end face of the hub 10 and the elastic element 20. The elastic element 20 and rotating plate 30 can be installed on the existing hub 10, eliminating the need to manufacture a thicker hub 10 to increase its axial end face area, thereby saving on the manufacturing cost of the hub 10.

[0056] The fixed plate 50 has a certain axial dimension, which keeps the elastic element 20 and the axial end face of the hub 10 axially spaced. The rotating plate 30 is located between the hub 10 and the elastic element 20 along the axial direction A, thereby reducing the axial space occupied and making the structure of the entire mating clearance elimination device 100 more compact.

[0057] The fixing plate 50 can also be an independent block structure, with multiple fixing plates 50 arranged on the circumferential W, so that the radially outer end of the elastic element 20 is connected to the axial end face of the hub 10 through the fixing plate 50. The fixing plate 50 can be an annular shape with a large inner diameter.

[0058] In this embodiment, as Figure 5 As shown, the fixed plate 50 includes a first plate 51 and a second plate 52 that are axially offset. The first plate 51 is located at the radially inner end and is fixedly connected to the axial end face of the hub 10 by welding. The second plate 52 is located at the radially outer end and is fixedly connected to the radially outer end of the elastic member 20 by a second fastener 70. The rotating plate 30 is located axially between the first plate 51 of the fixed plate 50 and the radially inner end of the elastic member 20.

[0059] like Figure 11 As shown, the first plate 51 located at the radial inner end is provided with a third groove 53 that is the same width as the first groove 12 of the hub 10 and circumferentially aligned. The third groove 53 communicates with the radial inner end of the fixing plate 50. When the axial portion 41 of the control pin 40 is inserted into the first groove 12 of the hub 10, the radial portion 42 of the control pin 40 abuts against the axial end face of the hub 10 and can be located in the third groove 53 of the fixing plate 50.

[0060] The width of the third groove 53 can abut against the radial portion 42 of the control pin 40. The third groove 53 can also guide the radial portion 42 of the control pin 40 to move radially. In this way, the third groove 53 can restrict the rotation of the radial portion 42 and guide the radial movement of the radial portion 42.

[0061] like Figure 9 and Figure 13 As shown, when the control pin 40 moves radially outward, after the locking block 44 of the radial part 42 radially disengages from the second groove 32 of the rotating plate 30, the radial outer end of the radial part 42 can just abut against the radial inner wall of the third groove 53, thereby limiting the radial movement distance of the control pin 40.

[0062] In some embodiments, such as Figure 9 As shown, the rotating plate 30 is connected to the radial inner end of the elastic member 20 via the first fastener 60 to resist torsion. Figure 5 and Figure 11 As shown, a clearance hole 54 is provided on the radially inner side of the fixed plate 50 to avoid the cap structure of the first fastener 60 on the other side of the rotating plate 30 in the axial direction. By avoiding the cap structure of the first fastener 60, the axial space occupied is reduced, making the structure of the entire mating clearance elimination device 100 more compact.

[0063] In some embodiments, such as Figure 6 As shown, the elastic element 20 can be a spoke spring, which includes an outer connecting ring 21, an inner connecting ring 22, and multiple spokes 23. Figure 7 and Figure 9 As shown, the outer connecting ring 21 is anti-torsionally connected to the second plate 52 of the fixed plate 50 via the second fastener 70; the inner connecting ring 22 is anti-torsionally connected to the rotating plate 30 via the first fastener 60; multiple spokes 23 extend radially and are elastically deformable and connected between the outer connecting ring 21 and the inner connecting ring 22, so that the elastic element 20 can undergo elastic deformation in the circumferential direction W.

[0064] The stiffness of the spoke spring can be controlled by adjusting the diameter of the inner connecting ring 22, the diameter of the outer connecting ring 21, the circumferential width of the spokes 23, and the number of spokes 23. Furthermore, its vibration damping effect can be further adjusted by changing the number of spoke springs. In some embodiments, multiple spoke springs are provided, and the multiple spoke springs are stacked axially. In this embodiment, as... Figure 9 As shown, there can be three spoke springs, and they are fixed by the same first fastener 60 axially passing through the outer connecting ring 21 of all the spoke springs.

[0065] It should be noted that the use of a spoke spring as the elastic element 20 is merely an exemplary embodiment and is not intended to limit the scope of protection of this disclosure. In other embodiments, the elastic element 20 can be other types of springs, such as replacing the spokes 23 in the spoke spring with a torsion spring, rubber spring, coil spring, or spiral spring, etc., which will not be listed here. All of these elastic elements 20 can achieve the function of causing the rotating plate 30 to rotate relative to the hub 10 under the action of the control pin 40, and are all within the scope of protection of this disclosure.

[0066] Based on the same inventive concept, such as Figure 1 As shown, this disclosure provides a torque damping device 200, including the aforementioned mating clearance elimination device 100. The specific manner in which the torque damping device 200 in the above embodiments achieves its function has been described in detail in the embodiments relating to the mating clearance elimination device 100, and will not be elaborated upon here.

[0067] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0068] It is further understood that the terms "first," "second," etc., are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from one another and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, a first structure can also be called a second structure, and similarly, a second structure can also be called a first structure.

[0069] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following scope of claims.

[0070] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A gap-eliminating device (100), characterized in that, include: The hub (10) includes a first internal gear (11) and a first groove (12). The first groove (12) communicates with the axial end face and radial inner wall of the hub (10). The first groove (12) is located circumferentially between two adjacent first internal gears (11). An elastic element (20) is provided, the outer radial end of which is torsionally connected to the hub (10); The rotating plate (30) includes a second internal gear (31) and a second groove (32) axially penetrating the rotating plate (30). The rotating plate (30) is torsionally connected to the radial inner end of the elastic member (20). In the free state of the elastic member (20), the second internal gear (31) of the rotating plate (30) is circumferentially offset from the first internal gear (11) of the hub (10). After the control pin (40) is inserted into the first groove (12) and the second groove (32), the radially inner end of the elastic member (20) is twisted to circumferentially align the second internal gear (31) with the first internal gear (11). In this process, by moving the control pin (40) radially outward, the control pin (40) is radially disengaged from the second groove (32), and the radial inner end of the elastic element (20) rotates and drives the second internal gear (31) of the rotating plate (30) to be circumferentially misaligned with the first internal gear (11) of the hub (10).

2. The clearance elimination device (100) according to claim 1, characterized in that, The control pin (40) includes: An axial portion (41) is located radially movable within the first groove (12), and the radial inner wall of the axial portion (41) is provided with a protrusion (43); A radial portion (42) is provided, with one axial side abutting against the axial end face of the hub (10), and a retaining block (44) provided on the other axial side of the radial portion (42). When the protrusion (43) of the axial portion (41) protrudes radially out of the first groove (12), the locking block (44) is located in the second groove (32), and the second internal gear (31) is circumferentially aligned with the first internal gear (11); when the control pin (40) moves radially outward to cause the protrusion (43) of the axial portion (41) to retract into the first groove (12), the locking block (44) radially disengages from the second groove (32), and the second internal gear (31) is circumferentially offset from the first internal gear (11).

3. The clearance elimination device (100) according to claim 2, characterized in that, The protrusion (43) has a curved surface that extends in the axial direction.

4. The clearance elimination device (100) according to claim 2, characterized in that, The clearance elimination device (100) further includes a fixing plate (50), which is axially connected between the axial end face of the hub (10) and the radial outer end of the elastic member (20), such that the elastic member (20) is axially spaced from the axial end face of the hub (10), and the rotating plate (30) is axially located between the hub (10) and the elastic member (20).

5. The clearance elimination device (100) according to claim 4, characterized in that, The fixing plate (50) includes a first plate (51) and a second plate (52) that are axially offset. The first plate (51) is located at the radially inner end and is fixedly connected to the axial end face of the hub (10). The second plate (52) is located at the radially outer end and is fixedly connected to the radially outer end of the elastic member (20). The first plate (51) has a third groove (53) at its radial inner end that is the same width as the first groove (12) of the hub (10) and circumferentially aligned. The third groove (53) accommodates the radial portion (42) of the control pin (40). When the control pin (40) moves radially outward, the radial inner wall of the third groove (53) abuts against the radial outer wall of the radial portion (42) of the control pin (40).

6. The clearance elimination device (100) according to claim 5, characterized in that, The rotating plate (30) is torsionally connected to the radial inner end of the elastic member (20) via a first fastener (60). The fixing plate (50) is provided with a clearance hole (54) on its radial inner side to avoid the cap structure of the first fastener (60) on the other side of the axial direction of the rotating plate (30).

7. The clearance elimination device (100) according to claim 2, characterized in that, The rotating plate (30) is provided with a limiting groove (33), which is located radially outside the second groove (32) and communicates with the second groove (32). The circumferential width of the limiting groove (33) is greater than the circumferential width of the second groove (32). When the control pin (40) moves radially outward, the locking block (44) of the radial part (42) radially disengages from the second groove (32), and the rotating plate (30) rotates so that the locking block (44) abuts against the groove wall of the limiting groove (33).

8. The clearance elimination device (100) according to claim 1, characterized in that, The number of second internal gears (31) of the rotating plate (30) is less than or equal to the number of first internal gears (11) of the hub (10).

9. The clearance elimination device (100) according to any one of claims 1 to 8, characterized in that, The elastic element (20) is a spoke spring, and the spoke spring includes: An outer connecting ring (21) is used for anti-torsional connection with the hub (10); An inner connecting ring (22) is used for anti-torsional connection with the rotating plate (30); Multiple spokes (23) extend radially and are elastically deformable between the outer connecting ring (21) and the inner connecting ring (22).

10. The clearance elimination device (100) according to claim 9, characterized in that, The spoke springs are provided in multiples, and the multiple spoke springs are stacked along the axial direction (A).

11. A torque damping device (200), characterized in that, Includes the mating gap elimination device (100) as described in any one of claims 1 to 10.

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