Damper device
The damper device addresses wear issues by distributing rotational forces through a multi-body elastic mechanism design, reducing wear and improving durability.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- AISIN CORP
- Filing Date
- 2023-03-28
- Publication Date
- 2026-07-22
AI Technical Summary
The damper device in Patent Document 1 experiences wear on the second coil spring due to direct contact with other components, leading to potential damage and reduced performance.
A damper device design that includes a first rotating body, a second rotating body with a first elastic mechanism, and a third rotating body with a second elastic mechanism, where the first rotating body presses against the first elastic mechanism to distribute rotational forces, and each sheet member is positioned between rotating bodies with projections extending in the same direction to minimize direct contact and wear.
The design effectively reduces wear on elastic members by distributing rotational forces and minimizing direct contact, thereby enhancing the durability and performance of the damper device.
Smart Images
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Abstract
Description
Technical Field
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[0001] The technology disclosed in this application relates to a damper device.
Background Art
[0002] In vehicles and the like, a damper device for absorbing torque vibrations transmitted from a drive source such as an engine toward a transmission is provided on the torque transmission path between the drive source and the transmission.
[0003] As an example of such a damper device, the damper device disclosed in Patent Document 1 is known. The damper device described in Patent Document 1 includes a disk plate to which power from a drive source is transmitted, a hub that expands and contracts a first coil spring disposed between the disk plate and rotates relative to the disk plate, and a control plate that expands and contracts a second coil spring smaller than the first coil spring and rotates relative to the hub, and is disposed between the hub.
[0004] In the torsional characteristics of such a damper device, a region with low rigidity (predamper region) is formed by the second coil spring as a region where the torsional angle is close to 0, and a region with high rigidity is formed by the first coil spring and the second coil spring as a region where the torsional angle is large.
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0006] However, in the damper device disclosed in Patent Document 1, the second coil spring is in direct contact with other components, including the hub and / or control plate, which leads to the problem of wear on the second coil spring and / or other components.
[0007] Therefore, the technology disclosed in this application provides a damper device that at least partially suppresses wear of a member provided in relation to an elastic member. [Means for solving the problem]
[0008] A damper device according to one embodiment comprises: a first rotating body that receives power and rotates around a rotation axis; a second rotating body that rotates around the rotation axis, with a first elastic mechanism positioned circumferentially between it and the first rotating body; and a third rotating body that rotates around the rotation axis, with a second elastic mechanism positioned circumferentially between it and the second rotating body, including an elastic member, a first sheet supporting one end of the elastic member, and a second sheet supporting the other end of the elastic member, the first rotating body presses against the first elastic mechanism, thereby distributing the second rotational force applied by the first elastic mechanism. The rolling body is provided to rotate relative to the third rotating body while compressing the second elastic mechanism, and the first rotating body is provided to rotate relative to the second and third rotating bodies while compressing the first elastic mechanism between itself and the second rotating body that is in contact with the first elastic mechanism, by further pressing against the first elastic mechanism, and each of the first and second sheets is positioned between the first main surface of the second rotating body extending in a direction intersecting the axis of rotation and the second main surface of the third rotating body extending in the same direction, and includes a projection extending in the same direction. [Effects of the Invention]
[0009] The technology disclosed in this application provides a damper device that at least partially suppresses wear of a member provided in relation to an elastic member. [Brief explanation of the drawing]
[0010] [Figure 1] This is a schematic perspective view showing the configuration of a damper device according to one embodiment. [Figure 2] Figure 1 is a schematic top view showing the configuration of the damper device. [Figure 3] This is a schematic perspective view showing the configuration of the damper device shown in Figure 1 with some components removed. [Figure 4] This is a schematic top view showing the configuration of the damper device in the state shown in Figure 3. [Figure 5] Furthermore, Figure 4 is a schematic top view showing the configuration of the damper device with some components removed. [Figure 6] This is a schematic top view illustrating the configuration of the damper device shown in Figure 2, by virtually viewing the internal components through transparent means. [Figure 7] Figure 1 is a schematic perspective view showing a disassembled version of the damper device shown in Figure 1. [Figure 8] Figure 6 is a schematic cross-sectional view showing the configuration of the damper device shown in Figure 1, viewed from the irregular A-A' cross-section. [Figure 9] Figure 1 is a schematic perspective view showing the configuration of the second elastic mechanism included in the damper device. [Figure 10] Figure 6 is a schematic cross-sectional view showing the configuration of the damper device shown in Figure 1, viewed from the irregular BCDE cross-section. [Modes for carrying out the invention]
[0011] Various embodiments will be described below with reference to the attached drawings. Note that common components in the drawings are denoted by the same reference numerals. Also, please note that components shown in one drawing may be omitted in another for the sake of clarity. Furthermore, please be aware that the attached drawings are not necessarily drawn to an exact scale.
[0012] 1. Configuration of the damper device The overall configuration of the damper device according to an embodiment will be described with reference to FIGS. 1 to 8. FIG. 1 is a perspective view schematically showing the configuration of the damper device according to an embodiment. FIG. 2 is a top view schematically showing the configuration of the damper device shown in FIG. 1. FIG. 3 is a perspective view schematically showing the configuration of the damper device shown in FIG. 1 in a state where some members are removed. FIG. 4 is a top view schematically showing the configuration of the damper device in the state shown in FIG. 3. FIG. 5 is a top view schematically showing the configuration of the damper device shown in FIG. 4 in a state where further some members are removed. FIG. 6 is a top view schematically showing the configuration of the damper device shown in FIG. 2 in a form where the members existing inside are virtually seen through. FIG. 7 is a perspective view schematically showing the configuration of the damper device shown in FIG. 1 disassembled. FIG. 8 is a cross-sectional view schematically showing the configuration of the damper device shown in FIG. 1 as seen from the irregular A-A' cutting plane shown in FIG. 6.
[0013] The damper device 1 can be a device provided between a drive source (not shown) such as an engine or a motor and a transmission (not shown), and through which power from the drive source is transmitted and output to the transmission.
[0014] Generally speaking, this damper device 1 includes a disk plate 100 as a first rotating body to which power is transmitted, a first elastic mechanism portion 200 arranged along the circumferential direction and sandwiched between the disk plate 100, a control plate 300 as a second rotating body that rotates around the rotation axis O, a second elastic mechanism portion 400 arranged along the circumferential direction and sandwiched between the control plate 300, and a hub 500 as a third rotating body that rotates around the rotation axis O.
[0015] In this specification, the "axial direction" means a direction extending parallel to the rotation axis O, the "radial direction" means a direction orthogonal to the rotation axis O, and the "circumferential direction" means a direction that circulates around the rotation axis O.
[0016] (1) Disc plate 100 (first rotating body) The disk plate 100 can be arranged on the most upstream side in the damper device 1. The disk plate 100 can be formed of a metallic material such as, for example, stainless steel, steel, duralumin, or iron. The disk plate 100 can include a first plate 100A and a second plate 100B that exhibit a substantially disk shape, as well shown in FIGS. 7 and 8. The first plate 100A and the second plate 100B can be arranged so as to sandwich a lining plate 101, a control plate 300, a hub 500, etc. therebetween. The first plate 100A and the second plate 100B can both be coupled by means of a rivet R or the like to the lining plate 101 that exhibits an annular shape in the vicinity of the outer periphery, whereby they can rotate integrally with the lining plate 101 around the rotation axis O.
[0017] Note that power from a drive source can be transmitted to such a disk plate 100 via a flywheel (not shown) and the lining plate 101.
[0018] As well shown in FIGS. 1 to 7, the first plate 100A and the second plate 100B can support each of at least one (here, two as an example) first elastic mechanism part 200 so as to sandwich it from both sides in the circumferential direction. To achieve this, the first plate 100A and the second plate 100B can include opposing openings at positions corresponding to each first elastic mechanism part 200. Specifically, as well shown in FIG. 7, at the position corresponding to the first elastic mechanism part 200A, the first plate 100A can include an opening 102A, and the second plate 100B can include an opening 102B that faces the opening 102A. Similarly, at the position corresponding to the first elastic mechanism part 200B, the first plate 100A can include an opening 104A, and the second plate 100B can include an opening 104B.
[0019] In one example, the opening 102A of the first plate 100A and the opening 102B of the second plate 100B can have the same shape, and the opening 104A of the first plate 100A and the opening 104B of the second plate 100B can have the same shape.
[0020] The opening 102A (102B) may include a support surface 102A1 (102B1) at one end in the circumferential direction, which has a shape that conforms to the outer surface of the first sheet member 206 of the first elastic mechanism 200A (described later) and supports this outer surface from the outside in the circumferential direction. The opening 102A (102B) may also include a support surface 102A2 (102B2) at the other end in the circumferential direction, which has a shape that conforms to the outer surface of the second sheet member 208 of the first elastic mechanism 200A (described later) and supports this outer surface from the outside in the circumferential direction.
[0021] Similarly, the opening 104A (104B) may include a support surface 104A1 (104B1) at one end in the circumferential direction that conforms to the shape of the outer surface of the first sheet member 206 of the first elastic mechanism 200B (described later) and supports this outer surface from the outside in the circumferential direction. Furthermore, the opening 104A (104B) may include a support surface 104A2 (104B2) at the other end in the circumferential direction that conforms to the shape of the outer surface of the second sheet member 208 of the first elastic mechanism 200B (described later) and supports this outer surface from the outside in the circumferential direction.
[0022] Furthermore, as clearly shown in Figures 7 and 8, the first plate 100A and the second plate 100B may each include through holes 106A and 106B through which the cylindrical portion 502 of the hub 500, described later, is inserted.
[0023] Such a disc plate 100 may be provided so as to be able to rotate relative to the hub 500 via a sliding member 600 which can also function as a bearing.
[0024] Specifically, as clearly shown in Figures 7 and 8, the sliding member 600 may have a substantially annular shape overall and include a through hole 602 in the center. The sliding member 600 may include a substantially annular base 604 and a similarly substantially annular projection 606 that protrudes axially from the base 604 and has a smaller outer diameter than the base 604 (the sliding member 600 may be formed from a material such as resin (nylon resin, etc.), stainless steel, steel, duralumin, or iron). At least one projection 604a may be formed on the surface of the base 604 facing the control plate 300. By fitting this projection 604a onto the control plate 300, the sliding member 600 can rotate integrally with the control plate 300.
[0025] The sliding member 600 may be provided so as to be able to rotate relative to the hub 500 by inserting the cylindrical portion 502 of the hub 500, which will be described later, through the through hole 602. The disc plate 100 may be provided so as to be able to rotate relative to the hub 500 via the sliding member 600 by inserting the protruding portion 606 of the sliding member 600 through the through hole 106A of the first plate 100A.
[0026] (2) Hub 500 (third rotating body) The hub 500 can function as an output member that outputs the driving force in the damper device 1 to the outside. The hub 500 may be made of a metallic material such as stainless steel, steel, duralumin, or iron. The hub 500 may be positioned between the first plate 100A and the second plate 100B of the disc plate 100 and be configured to be rotatable relative to the disc plate 100 and the control plate 300.
[0027] The hub 500 may include a cylindrical portion 502 and a plate portion 504 extending radially outward from the cylindrical portion 502 and exhibiting a deformed circular shape, as is clearly shown in Figures 7, 8, and 5. The cylindrical portion 502 can be spline-coupled to the input shaft (not shown) of a transmission by inserting it through an axially extending through hole 502a. The cylindrical portion 502 may extend to the outside of the disc plate 100 through through holes 106A and 106B of the disc plate 100.
[0028] The plate portion 504 may include openings for accommodating at least one (in this example, two) first elastic mechanism portions 200 at positions corresponding to each of the first elastic mechanism portions 200. Specifically, the plate portion 504 may include an opening 504A for accommodating the first elastic mechanism portion 200A at a position corresponding to the first elastic mechanism portion 200A, and an opening 504B for accommodating the first elastic mechanism portion 200B at a position corresponding to the first elastic mechanism portion 200B. In one example, the openings 504A and 504B may have the same shape as each other.
[0029] As clearly shown in Figure 5, the opening 504A may include a support surface 504A1 having a shape that conforms to the outer surface of the first sheet member 206, which will be described later, of the first elastic mechanism 200A. The support surface 504A1 can contact and support the outer surface of the first sheet member 206 from the circumferential outer side when the hub 500 rotates relative to the disc plate 100 (in a counterclockwise direction on the plane of the paper). The opening 504A may also include a support surface 504A2 having a shape that conforms to the outer surface of the second sheet member 208, which will be described later, of the first elastic mechanism 200A. The support surface 504A2 can contact and support the outer surface of the second sheet member 208 from the circumferential outer side when the hub 500 rotates relative to the disc plate 100 (in a clockwise direction on the plane of the paper).
[0030] Similarly, the opening 504B may include a support surface 504B1 having a shape that conforms to the outer surface of the first sheet member 206, which will be described later, of the first elastic mechanism 200B. The support surface 504B1 can contact and support the outer surface of the first sheet member 206 from the circumferential outer side when the hub 500 rotates relative to the disc plate 100 (in a counterclockwise direction on the plane of the paper). The opening 504B may also include a support surface 504B2 having a shape that conforms to the outer surface of the second sheet member 208, which will be described later, of the first elastic mechanism 200B. The support surface 504B2 can contact and support the outer surface of the second sheet member 208 from the circumferential outer side when the hub 500 rotates relative to the disc plate 100 (in a clockwise direction on the plane of the paper).
[0031] Furthermore, as clearly shown in Figures 7, 8, and 5, the plate portion 504 may include openings for accommodating at least one (in this example, two) second elastic mechanism portions 400 at positions corresponding to each of the second elastic mechanism portions 400. Specifically, the plate portion 504 may include an opening 506A for accommodating the second elastic mechanism portion 400A at a position corresponding to the second elastic mechanism portion 400A, and an opening 506B for accommodating the second elastic mechanism portion 400B at a position corresponding to the second elastic mechanism portion 400B. In one example, the openings 506A and 506B may have the same shape as each other.
[0032] As clearly shown in Figure 5, the opening 506A may include a support surface 506A1 at one end in the circumferential direction that conforms to the shape of the outer surface of the first sheet member 404 of the second elastic mechanism 400A (described later) and supports this outer surface from the outside in the circumferential direction. The opening 506A may also include a support surface 506A2 at the other end in the circumferential direction that conforms to the shape of the outer surface of the second sheet member 406 of the second elastic mechanism 400A (described later) and supports this outer surface from the outside in the circumferential direction.
[0033] Similarly, the opening 506B may include a support surface 506B1 at one end in the circumferential direction that conforms to the shape of the outer surface of the first sheet member 404 of the second elastic mechanism 400B (described later) and supports this outer surface from the outside in the circumferential direction. The opening 506B may also include a support surface 506B2 at the other end in the circumferential direction that conforms to the shape of the outer surface of the second sheet member 406 of the second elastic mechanism 400B (described later) and supports this outer surface from the outside in the circumferential direction.
[0034] (3) First elastic mechanism 200 The damper device 1 may include at least one first elastic mechanism 200. Here, as an example, the damper device 1 may include two first elastic mechanisms 200A and 200B as described above.
[0035] Each first elastic mechanism 200 can, in one example, have the same configuration as the others. Each first elastic mechanism 200 (200A, 200B), as shown in Figures 1 to 6, may include, for example, a first elastic member 202 having a large outer diameter that extends spirally along the circumferential direction, a second elastic member 204 having a small outer diameter that extends spirally along the circumferential direction, a first sheet member 206 disposed on one end of the first elastic member 202 (second elastic member 204) and supporting the first elastic member 202 (second elastic member 204) from the outside in the circumferential direction, and a second sheet member 208 disposed on the other end of the first elastic member 202 (second elastic member 204) and supporting the first elastic member 202 (second elastic member 204) from the outside in the circumferential direction.
[0036] Here, we will focus on and explain only the first elastic mechanism 200A of the two first elastic mechanisms 200A and 200B, and will omit the explanation of the first elastic mechanism 200B, which has a similar configuration to the first elastic mechanism 200A.
[0037] The second elastic member 204 is configured to be smaller in size than the first elastic member 202 and may be placed inside the first elastic member 202. Both the first elastic member 202 and the second elastic member 204 may be made of a metallic material such as steel or iron.
[0038] The first sheet member 206 may have a substantially L-shaped cross-section overall. The first sheet member 206 can abut one end of the first elastic member 202 (second elastic member 204) on its inner surface and support the first elastic member 202 (second elastic member 204) from the circumferential outer side.
[0039] As clearly shown in Figure 7, the first sheet member 206 may include, for example, three grooves (or engaging surfaces) 206A, 206B, and 206C extending circumferentially and substantially parallel to each other on its outer surface. Furthermore, the first sheet member 206 may include a projection 206D projecting radially outward between grooves 206A and 206B, and a projection 206E projecting radially outward between grooves 206B and 206C. The first sheet member 206 may be formed from a material such as resin, rubber, or metal.
[0040] The second sheet member 208, like the first sheet member 206, may also have a substantially L-shaped cross-section overall. The second sheet member 208 can support the first elastic member 202 (second elastic member 204) from the circumferential outer side by contacting the other end of the first elastic member 202 (second elastic member 204) on its inner surface. The second sheet member 208 may also be formed from a material such as resin, rubber, or metal.
[0041] The second sheet member 208 may include, for example, three grooves (or engaging surfaces) 208A, 208B, and 208C on its outer surface that extend circumferentially and substantially parallel to each other. Furthermore, the second sheet member 208 may include a projection 208D projecting radially outward between grooves 208A and 208B, and a projection 208E projecting radially outward between grooves 208B and 208C.
[0042] We will focus on the relationship between the first sheet member 206 and the second sheet member 208 and the disc plate 100.
[0043] As clearly shown in Figures 1, 2, and 7, the support surface 102A1 surrounding the opening 102A of the first plate 100A can contact the groove 206A formed on the outer surface of the first sheet member 206 and support the groove 206A from the outside in the circumferential direction. Similarly, the support surface 102A2 surrounding the opening 102A of the first plate 100A can contact the groove 208A formed on the outer surface of the second sheet member 208 and support the groove 208A from the outside in the circumferential direction.
[0044] As clearly shown in Figure 7, the support surface 102B1 surrounding the opening 102B of the second plate 100B can contact the groove 206C formed on the outer surface of the first sheet member 206 and support the groove 206C from the outside in the circumferential direction. Similarly, the support surface 102B2 surrounding the opening 102B of the second plate 100B can contact the groove 208C formed on the outer surface of the second sheet member 208 and support the groove 208C from the outside in the circumferential direction.
[0045] On the other hand, we will focus on the relationship between the first seat member 206 and the second seat member 208 and the hub 500.
[0046] As clearly shown in Figures 3, 4, and 7, the support surface 504A1 surrounding the opening 504A formed in the hub 500 can face the groove 206B formed on the outer surface of the first seat member 206 at a distance when the hub 500 rotates integrally with the disc plate 100. The support surface 504A1 can contact and press against the groove 206B when the hub 500 continues to rotate relative to the disc plate 100 (counterclockwise in Figures 3 and 4).
[0047] The support surface 504A2 surrounding the opening 504A formed in the hub 500 can face the groove 208B formed on the outer surface of the second seat member 208 at a distance when the hub 500 rotates integrally with the disc plate 100. The support surface 504A2 can contact and press against the groove 208B when the hub 500 continues to rotate relative to the disc plate 100 (clockwise in Figures 3 and 4).
[0048] (4) Second elastic mechanism section 400 The damper device 1 may include at least one second elastic mechanism 400. Herein, as an example, the damper device 1 may include two second elastic mechanisms 400A and 400B as described above.
[0049] Each second elastic mechanism 400 can, in one example, have the same configuration as others. The configuration of each second elastic mechanism 400 will be further explained with reference to Figure 9. Figure 9 is a schematic perspective view showing the configuration of the second elastic mechanism included in the damper device shown in Figure 1.
[0050] Each second elastic mechanism 400 (400A, 400B), as shown in Figure 9, may include, for example, an elastic member 402 extending spirally along the circumferential direction, a first sheet member 404 positioned on one end of the elastic member 402 and supporting the elastic member 402 from the outside in the circumferential direction, and a second sheet member 406 positioned on the other end of the elastic member 402 and supporting the elastic member 402 from the outside in the circumferential direction.
[0051] Here, we will focus on and explain only the second elastic mechanism 400A of the two second elastic mechanisms 400A and 400B, and will omit the explanation of the second elastic mechanism 400B, which has a similar configuration to the second elastic mechanism 400A.
[0052] The elastic member 402 may be formed from a metallic material such as steel or iron.
[0053] The first sheet member 404 may have a substantially L-shaped cross-section overall. The first sheet member 404 can support the elastic member 402 from the circumferential outer side by contacting one end of the elastic member 402 on its inner surface.
[0054] The first sheet member 404 may include, for example, two engaging surfaces 404A and 404B extending substantially parallel to each other on its outer surface. Furthermore, the first sheet member 404 may include a projection 404C extending radially outward (in a direction intersecting or perpendicular to the rotation axis O) between the engaging surfaces 404A and 404B on its outer surface. The first sheet member 404 may be formed from a material such as resin, rubber, or metal.
[0055] The projection 404C may include a portion that extends between the main surface 300a of the control plate 300 (described later) and the main surface 504a of the hub 500 in a direction intersecting the axis of rotation O (for example, a direction perpendicular to the axis of rotation O), insofar as it achieves the objective of restricting the axial movement and / or inclination of the first seat member 404 with respect to the radial direction. This portion may extend in the circumferential and / or radial directions. Furthermore, this portion may extend radially outward and / or radially inward with respect to the elastic member 402.
[0056] The second sheet member 406 may also include, for example, two engaging surfaces 406A and 406B extending substantially parallel to each other on its outer surface. Furthermore, the first sheet member 406 may include a projection 406C on its outer surface that extends radially outward (in a direction intersecting or perpendicular to the axis of rotation O) between the engaging surfaces 406A and 406B. The second sheet member 406 may also be formed from a material such as resin, rubber, or metal.
[0057] The projection 406C may include a portion that extends between the main surface 300a of the control plate 300 (described later) and the main surface 504a of the hub 500 in a direction intersecting the axis of rotation O (for example, a direction perpendicular to the axis of rotation O), insofar as it achieves the objective of restricting the axial movement and / or inclination of the second seat member 406 with respect to the radial direction (at least partially). This portion may extend in the circumferential and / or radial directions. Furthermore, this portion may extend radially outward and / or radially inward with respect to the elastic member 402.
[0058] Each second elastic mechanism 400, including such a configuration, can be attached to and supported by the hub 500, as clearly shown in Figures 5 and 7 (and can also be attached to and supported by the control plate 300, as will be described later).
[0059] Specifically, the engaging surface 404B of the first seat member 404 is housed in the opening 506A of the hub 500 and can be supported from the outside in the circumferential direction by the support surface 506A1 surrounding the opening 506A. In addition, the engaging surface 406B of the second seat member 406 is housed in the opening 506A of the hub 500 and can be supported from the outside in the circumferential direction by the support surface 506A2 surrounding the opening 506A.
[0060] The projection 404C of the first sheet member 404 and the projection 406C of the second sheet member 406 can be positioned and extend between the main surface 504a of the hub 500 (i.e., the surface 504a of the plate portion 504 facing the control plate 300) and the main surface 300a of the control plate 300 (i.e., the surface 300a of the control plate 300 facing the plate portion 504), which will be described later.
[0061] (5) Control plate 300 (second rotating body) As clearly shown in Figure 7, the control plate 300 may be positioned between the first plate 100A of the disc plate 100 and the hub 500. The control plate 300 may be made of a metallic material such as stainless steel, steel, duralumin, or iron.
[0062] As clearly shown in Figures 3, 4, and 7, the control plate 300 may include a substantially annular central part 302 and a plurality of substantially fan-shaped outer parts 304 extending radially outward from the central part 302. Here, since the damper device 1 includes two first elastic mechanism parts 200 (200A, 200B), the control plate 300 may include two outer parts 304 (304A, 304B).
[0063] Furthermore, the central part 302 may include a through hole 302a at its center through which the cylindrical portion 502 of the hub 500 is inserted.
[0064] Furthermore, the central part 302 may include, for example, a plurality of arm portions 302b on its outer periphery. Here, the central part 302 may include, as an example, four arm portions 302b1 to 302b4. Each arm portion 302b may, for example, be plate-shaped and may extend in a direction intersecting the extending surface of the central part 302 (here, as an example, a direction substantially parallel to the axis of rotation O).
[0065] In a preferred example, the central part 302 may include each arm portion 302b on its outer periphery, but in another example, it may, instead of or in addition to, include a plurality of arms 302b on its inner periphery. Alternatively, instead of the central part 302 including a plurality of arms 302b, or in addition to the central part 302 including a plurality of arms 302b, any of the outer portions 304 may include similar arms on their outer and / or inner periphery.
[0066] The outer portion 304A may include at least one (in this case, one) contact portion 304A1 near its outer peripheral edge. The contact portion 304A1 may extend in a direction intersecting the extending surface of the outer portion 304A (in this case, for example, a direction substantially parallel to the axis of rotation O). The contact portion 304A1 can contact and support the outer surface of the first sheet member 206 from the circumferential outer side, as is clearly shown in Figures 3 and 4.
[0067] Furthermore, the outer portion 304A may include at least one (in this case, one) contact portion 304A2 near its outer edge and at a distance along the circumferential direction from the aforementioned contact portion 304A1. The contact portion 304A2 may extend in a direction intersecting the extending surface of the outer portion 304A (in this case, as an example, a direction substantially parallel to the axis of rotation O). The contact portion 304A1 can contact and support the outer surface of the second sheet member 208 from the circumferentially outer side, as is clearly shown in Figures 3 and 4.
[0068] The outer portion 304B may include at least one (in this case, one) contact portion 304B1 near its outer peripheral edge. The contact portion 304B1 may extend in a direction intersecting the extending surface of the outer portion 304B (in this case, for example, a direction substantially parallel to the axis of rotation O). The contact portion 304B1 can contact and support the outer surface of the first sheet member 206 from the circumferential outer side, as is clearly shown in Figures 3 and 4.
[0069] Furthermore, the outer portion 304B may include at least one (in this case, one) contact portion 304B2 near its outer peripheral edge and at a distance along the circumferential direction from the aforementioned contact portion 304B1. The contact portion 304B2 may extend in a direction intersecting the extending surface of the outer portion 304B (in this case, as an example, a direction substantially parallel to the axis of rotation O). The contact portion 304B2 can contact and support the outer surface of the second sheet member 208 from the circumferentially outer side, as is clearly shown in Figures 3 and 4.
[0070] Furthermore, as clearly shown in Figures 3, 4, and 7, the control plate 300 may include openings 306 at positions opposite each second elastic mechanism 400. Here, the control plate 300 may include an opening 306a in the outer portion 304A and an opening 306b in the outer portion 304B.
[0071] As clearly shown in Figures 3 and 4, the opening 306a may include a support surface 306a1 at one end in the circumferential direction that conforms to the shape of the outer surface of the first sheet member 404 of the second elastic mechanism 400A and supports this outer surface from the outside in the circumferential direction. The opening 306a may also include a support surface 306a2 at the other end in the circumferential direction that conforms to the shape of the outer surface of the second sheet member 406 of the second elastic mechanism 400A and supports this outer surface from the outside in the circumferential direction.
[0072] Similarly, the opening 306b may include a support surface 306b1 at one end in the circumferential direction that conforms to the shape of the outer surface of the first sheet member 404 of the second elastic mechanism 400B and supports this outer surface from the outside in the circumferential direction. The opening 306b may also include a support surface 306b2 at the other end in the circumferential direction that conforms to the shape of the outer surface of the second sheet member 406 of the second elastic mechanism 400B and supports this outer surface from the outside in the circumferential direction.
[0073] The control plate 300 is connected to the hub 500 via such a second elastic mechanism 400. This allows the control plate 300 and the hub 500 to rotate relative to each other by compressing the elastic members 402 contained in each second elastic mechanism 400 along the circumferential direction.
[0074] Next, we will examine how the control plate 300, which includes this configuration, is positioned in relation to other components in the damper device 1, referring to Figure 10 in addition to Figures 7 and 8. Figure 10 is a schematic cross-sectional view of the damper device configuration shown in Figure 1, viewed from the irregular BCDE cross-section shown in Figure 6.
[0075] The control plate 300 may be positioned between the hub 500 and a sliding member 600 that is rotatably mounted relative to the first plate 100A of the disc plate 100. The control plate 300 can rotate integrally with the sliding member 600 by fitting onto a projection 604a formed on the base 604 of the sliding member 600. Furthermore, a substantially annular disc spring 700 may be positioned between the sliding member 600 and the control plate 300 (center 302). By providing this disc spring 700, the axial gap between each member can be reduced, and / or resonance can be suppressed by providing sliding resistance to the rotation of the damper device. Furthermore, when the control plate 300 and the sliding member 600 and the disc plate 100 rotate relative to each other, a sliding torque may be generated between the sliding member 600 and the first plate 100A of the disc plate 100.
[0076] Furthermore, a sliding member (second annular member) 800, which may have a substantially annular shape, may be positioned between the hub 500 (plate portion 504) and the second plate 100B. The sliding member 800 may be provided with the hub 500 sandwiched between it and the control plate 300. The cylindrical member 502 of the hub 500 can be inserted through a through hole 800a formed in the center of the sliding member 800. The sliding member 800 may also include a substantially annular projection 810 that protrudes in the axial direction. The projection 810 can be inserted into a through hole 106B formed in the second plate 100B. When the hub 500 and the disc plate 100 rotate relative to each other, a sliding torque may be generated between the hub 500 and the disc plate 100. The sliding member 800 may be made of a material such as resin or rubber.
[0077] The ends E of each arm portion 302b (for example, arms 302b1 to 302b4) provided on the control plate 300 can penetrate the hub 500 (for example, through the opening 504A or 504B formed in the hub 500) and contact the sliding member 800. By providing each arm portion 302b in this way, the distance between the main surface 300a of the control plate 300 (the surface of the control plate 300 facing the plate portion 504) and the surface 802 of the sliding member 800 facing the control plate 300 (or plate portion 504) can be maintained at or above a predetermined distance. Here, the predetermined distance is determined by the length of the arm portion 302b and can be set to be greater than, for example, the sum of the thickness of the plate portion 504 and the thickness of the projection portion 404C. As a result, a constant distance can be maintained between the control plate 300 and the plate portion 504 of the hub 500. In other words, a certain distance can be maintained between the main surface 300a of the control plate 300 (the surface of the control plate 300 facing the plate portion 504) and the main surface 504a of the hub 500 (the surface of the hub 500 facing the control plate 300). This certain distance can be greater than the thickness of the projection 404C in the axial direction. This can reduce wear caused by the projection 404C simultaneously contacting both the main surface 300a of the control plate 300 and the main surface 504a of the hub 500 (however, the projection 404C may be inclined so that there is room for it to contact only one of the main surface 300a of the control plate 300 and the main surface 504a of the hub 500).
[0078] In a preferred example, the ends E of the arms 302b (302b1 to 302b4) can be fitted into grooves or holes 804 formed in the surface 802 of the sliding member 800 facing the control plate 300. This allows the control plate 300 and the sliding member 800 to rotate integrally. In this case, since the ends E of each arm 302b do not rotate relative to the sliding member 800, friction between them can be suppressed. This suppresses wear on the ends E of each arm 302b. Therefore, a constant distance can be maintained between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500.
[0079] Furthermore, a washer (first annular member) 900, which may have a substantially annular shape, may be placed between the control plate 300 and the plate portion 504 of the hub 500. The cylindrical member 502 of the hub 500 can be inserted through a through hole 900a formed in the center of the washer 900. The washer 900 may also include a substantially annular projection 910 that protrudes in the axial direction. The projection 910 can be inserted into a through hole 302a formed in the control plate 300. The washer 900 may be made of a material such as resin or rubber.
[0080] By providing the washer 900 in this way, a certain distance can be maintained (secured) between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500. That is, a certain distance can be maintained between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500. This reduces wear on the projection 404C due to simultaneous contact with both the main surface 300a of the control plate 300 and the main surface 504a of the hub 500 (however, the projection 404C may be inclined so that there is room for it to contact only one of the main surface 300a of the control plate 300 and the main surface 504a of the hub 500).
[0081] In a preferred example, the axial thickness of the washer 900, which is positioned between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500, can be greater than the axial thickness of the projection 404C. This ensures that a constant distance can be maintained between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500, even if the end E of the arm 302b rotates relative to the sliding member 800 and wears down, or even if the arm 302b is not provided at all.
[0082] Furthermore, the relationship (configuration and effect) between the projection 404C included in the first sheet member 404 and the main surface 300a of the control plate 300 (main surface 504a of the hub 500) as described above also applies similarly to the relationship between the projection 406C included in the second sheet member 406 and the main surface 300a of the control plate 300 (main surface 504a of the hub 500).
[0083] 2. Operation of the damper device An example of the operation performed by the damper device 1, which includes the above configuration, will be explained. Referring to Figure 2, the disk plate 100 is assumed to rotate counterclockwise in the plane of the paper when a driving force is transmitted from a drive source (not shown). When the disk plate 100 begins to rotate counterclockwise, the driving force can be transmitted to the second sheet member 208 via the support surface 102A1, the first sheet member 206, and the first elastic member 202 (second elastic member 204). As is clear from Figure 4, the second sheet member 208, to which the driving force has been transmitted, can press the contact portion 304B2 of the control plate 300 in a counterclockwise direction. The control plate 300, with the contact portion 304B2 pressed, compresses the elastic member 402 and can rotate relative to the hub 500 in a counterclockwise direction (this can generate a low-rigidity region, or pre-damper region, between the control plate 300 and the elastic member 402).
[0084] Subsequently, the outer surface of the second seat member 208 can come into contact with the support surface 504A2 surrounding the opening 504A of the hub 500. As a result, the hub 500, which is pressed against the outer surface of the second seat member 208, can also rotate in a counterclockwise direction. Furthermore, as the disc plate 100 continues to rotate in a counterclockwise direction, the support surfaces 102A1 and 102B1 of the rotating disc plate 100 compress the first elastic member 202 (second elastic member 204) between itself and the support surface 504A2 of the hub 500, causing it to rotate in a counterclockwise direction relative to the hub 500. As time progresses, the magnitude of the deflection of the first elastic member 202 (second elastic member 204) may change in accordance with the fluctuation of torque between the disc plate 100 and the hub 500. For example, if the torque transmitted to the disc plate 100 is greater than the torque transmitted to the hub 500, the disc plate 100 can rotate counterclockwise relative to the hub 500 while relatively bending the first elastic member 202 (second elastic member 204) between itself and the hub 500. On the other hand, if the torque transmitted to the disc plate 100 is less than the torque transmitted to the hub 500, the disc plate 100 can rotate clockwise relative to the hub 500 while relatively less bending the first elastic member 202 (second elastic member 204) between itself and the hub 500. Although only the first elastic mechanism 200A and its related components have been described here, similar operations are performed in parallel for the second elastic mechanism 200B and its related components.
[0085] In this way, the driving force transmitted from the drive source to the disc plate 100 can ultimately be transmitted to the transmission (not shown) via the hub 500.
[0086] When the damper device 1 is rotating in the state shown in Figure 4, the hub 500 may rotate clockwise relative to the disc plate 100 due to some factor (such as deceleration). Focusing on this case, in the state shown in Figure 4, first, the hub 500 can rotate clockwise relative to the control plate 300 by compressing the elastic member 402. After this, the support surface 504A2 of the hub 500 can come into contact with the outer surface of the second sheet member 208 by rotating clockwise. Furthermore, the second sheet member 208, pressed by the support surface 504A2 of the hub 500 which is rotating clockwise, can compress the first elastic member 202 (second elastic member 204) between itself and the first sheet member 206 which is supported by the support surfaces 102A1 and 102B1 of the disc plate 100 which is rotating counterclockwise relative to the hub 500.
[0087] Once any of the above factors are resolved, the first elastic member 202 (second elastic member 204) stretches to return to its original shape, allowing the second sheet member 208 to press the support surface 504A2 of the hub 500 in a counterclockwise direction. As a result, the hub 500 can rotate counterclockwise relative to the disc plate 100. After this, the elastic member 402 stretches to return to its original shape, allowing the hub 500 to rotate counterclockwise relative to the control plate 300. After further time has passed, the disc plate 100, control plate 300, and hub 500 can rotate together as a single unit (as shown in Figure 4). Note that only the first elastic mechanism 200A and its related components have been described here, but similar operations occur in parallel with the second elastic mechanism 200B and its related components.
[0088] As the above operations are repeated, the elastic member 402 will repeatedly compress and expand / contract (expand / contract). Even while these operations are taking place, as described above with reference to Figure 10, a certain distance (preferably greater than the axial thickness of the protrusions 404C and 406C) can be maintained or secured between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500.
[0089] Specifically, a first gap along the axial direction is formed between the surface of the projection 404C (406C) facing the main surface 300a (the surface extending radially) and the main surface 300a of the control plate 300, and a second gap along the axial direction is formed between the surface of the projection 404C (406C) facing the main surface 504a (the surface extending radially) and the main surface 504a of the hub 500, so that a certain distance can be maintained or secured between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500.
[0090] This reduces wear caused by the projection 404C (406C) simultaneously contacting both the main surface 300a of the control plate 300 and the main surface 504a of the hub 500. As a result, the durability of the projection 404C (406C) and the first sheet member 404 (second sheet member 406) including it can be improved, and consequently, the damping performance formed by the second elastic mechanism 400 can be improved.
[0091] Focusing on the elastic member 402, which is supported from the circumferential outer side by the protrusions 404C and 406C, the elastic member 402 can (at least partially) avoid contact with other members such as the control plate 300 and the hub 500 due to the presence of these protrusions. Therefore, it is also possible to suppress wear of the elastic member 402 itself caused by contact with other members.
[0092] 3. Variant In the various examples described above, the arm portion 302b and the sliding member 800 are provided as a set to ensure a certain distance along the axial direction between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500, and a washer 900 is provided instead or in addition to this.
[0093] However, these means are not essential elements in the technology disclosed in this application, but may be optional. Even if the arm portion 302b, sliding member 800, and washer 900 are not provided, the projections 404C and 406C still extend between the main surface 300a of the control plate 300 and the main surface 504a of the hub 500. This can (at least partially) restrict the axial movement and / or radial inclination of the first seat member 404 and the second seat member 406. Furthermore, even in this case, the elastic member 402 can (at least partially) avoid contact with other members such as the control plate 300 and the hub 500 due to the presence of the projections 404C and 406C. Therefore, it is also possible to suppress wear of the elastic member 402 itself caused by contact with other members.
[0094] In the example where the arm portion 302b is provided as described above, the case in which the arm portion 302b is provided on the control plate 300 was explained. In another example, instead of or in addition to this, a configuration may be adopted in which a similar arm portion provided on the sliding member 800 abuts against or fits onto the control plate 300.
[0095] In the various examples described above, the case was explained in which the projection having the above configuration is provided on each of the first sheet member 404 and the second sheet member 406 of each second elastic mechanism 400A, 400B included in the second elastic mechanism 400. In another example, it is possible to provide the projection having the above configuration on at least one second elastic mechanism included in the second elastic mechanism 400. In this case, it is possible to provide the projection having the above configuration on the first sheet member 404 and / or the second sheet member 406.
[0096] As will be readily apparent to those skilled in the art who have an interest in this disclosure, the various examples described above can be appropriately combined with one another in various patterns, insofar as they do not create a contradiction.
[0097] 4. Various forms A damper device according to the first embodiment comprises: a first rotating body that receives power and rotates around a rotation axis; a second rotating body that rotates around the rotation axis, with a first elastic mechanism positioned circumferentially between it and the first rotating body; and a third rotating body that rotates around the rotation axis, with a second elastic mechanism positioned circumferentially between it and the second rotating body, including an elastic member, a first sheet supporting one end of the elastic member, and a second sheet supporting the other end of the elastic member, wherein the first rotating body presses against the first elastic mechanism, and the second rotating body pressed by the first elastic mechanism The configuration can be adopted such that the first rotating body is provided to rotate relative to the third rotating body while compressing the second elastic mechanism, and the first rotating body is provided to rotate relative to the second and third rotating bodies while compressing the first elastic mechanism between itself and the second rotating body that is in contact with the first elastic mechanism, and each of the first and second sheets is positioned between the first main surface of the second rotating body extending in a direction intersecting the axis of rotation and the second main surface of the third rotating body extending in the same direction, and includes a projection extending in the same direction.
[0098] The damper device according to the second embodiment may adopt a configuration in which, as in the first embodiment, "the projection is provided such that a first gap is formed between the projection and the first main surface of the second rotating body, and / or a second gap is formed between the projection and the second main surface of the third rotating body."
[0099] The damper device according to the third embodiment may adopt a configuration in which, in the second embodiment described above, "a first annular member is provided between the second rotating body and the third rotating body, and the first annular member separates the first main surface and the second main surface, thereby forming the first gap and / or the second gap."
[0100] The damper device according to the fourth embodiment may adopt a configuration in which, in the first embodiment, "a second annular member is provided between the second rotating body and the third rotating body, the second rotating body includes an arm portion that penetrates the third rotating body and abuts against the second annular member, and the first gap and / or the second gap are formed by maintaining the distance between the first main surface and the second annular member to a predetermined distance or greater."
[0101] The damper device according to the fifth embodiment can adopt a configuration in which, as in the fourth embodiment, "the arm portion is fitted into the second annular member, causing the second rotating body and the second annular member to rotate integrally."
[0102] The damper device according to the sixth embodiment may further comprise a first annular member provided between the second rotating body and the third rotating body, wherein the first annular member separates the first main surface and the second main surface, thereby forming the first gap and / or the second gap.
[0103] As described above, the technology disclosed in this application makes it possible to provide a damper device that at least partially suppresses wear of a member provided in relation to an elastic member. [Explanation of symbols]
[0104] 1. Damper device O Rotation axis 100 Disc Plates 100A Plate No. 1 100B 2nd Plate 200 (200A, 200B) First Elastic Mechanism 300 Control Plate 300a Main surface (First main surface) 302b(302b1, 302b2, 302b3, 302b4) Arm E End of the arm 400 Second Elastic Mechanism 402 Elastic members 404 First sheet member (first sheet) 406 Second sheet member (second sheet) 404C, 406C protrusion 500 Hub 502 Cylindrical member 504 Board part 504a Main surface (second main surface) 600 Sliding member 700 disc springs 800 Sliding member (second annular member) 804 Groove or hole 900 Washer (First annular member)
Claims
1. It is a damper device, A first rotating body is subjected to power and rotates around a rotation axis, A second rotating body rotates around the rotation axis, with a first elastic mechanism, which is arranged circumferentially in the damper device, sandwiched between the first rotating body and the second rotating body. A third rotating body rotates around the rotation axis, with a second elastic mechanism, which includes an elastic member, a first sheet supporting one end of the elastic member, and a second sheet supporting the other end of the elastic member, sandwiched between the second rotating body and the second rotating body, and arranged along the circumferential direction. The first rotating body is provided such that, by pressing the first elastic mechanism, the second rotating body, pressed by the first elastic mechanism, rotates relative to the third rotating body while compressing the second elastic mechanism. The first rotating body is provided such that, by further pressing the first elastic mechanism, it rotates relative to the second and third rotating bodies while compressing the first elastic mechanism between itself and the second rotating body which is in contact with the first elastic mechanism. Each of the first sheet and the second sheet is positioned between the first main surface of the second rotating body extending in a direction intersecting the axis of rotation and the second main surface of the third rotating body extending in the same direction, and includes a projection extending in the same direction. The present invention further comprises a second annular member provided between the second rotating body and the third rotating body, A damper device characterized in that the second rotating body includes an arm portion that penetrates the third rotating body and abuts against the second annular member, and by maintaining the distance between the first main surface and the second annular member to a predetermined distance or greater, a first gap is formed between the projection and the first main surface of the second rotating body, and / or a second gap is formed between the projection and the second main surface of the third rotating body.
2. The damper device according to claim 1, wherein the arm portion is fitted to the second annular member, causing the second rotating body and the second annular member to rotate integrally.
3. The device further comprises a first annular member provided between the second rotating body and the third rotating body, The damper device according to claim 1 or claim 2, wherein the first annular member causes the first main surface and the second main surface to separate, thereby forming the first gap and / or the second gap.
4. A damper device, A first rotating body is subjected to power and rotates around a rotation axis, A second rotating body rotates around the rotation axis, with a first elastic mechanism, which is arranged circumferentially in the damper device, sandwiched between the first rotating body and the second rotating body. A third rotating body rotates around the rotation axis, with a second elastic mechanism, which includes an elastic member, a first sheet supporting one end of the elastic member, and a second sheet supporting the other end of the elastic member, sandwiched between the second rotating body and the second rotating body, and arranged along the circumferential direction. The first rotating body is provided such that, by pressing the first elastic mechanism, the second rotating body, pressed by the first elastic mechanism, rotates relative to the third rotating body while compressing the second elastic mechanism. The first rotating body is provided such that, by further pressing the first elastic mechanism, it rotates relative to the second and third rotating bodies while compressing the first elastic mechanism between itself and the second rotating body which is in contact with the first elastic mechanism. Each of the first sheet and the second sheet is positioned between the first main surface of the second rotating body extending in a direction intersecting the axis of rotation and the second main surface of the third rotating body extending in the same direction, and includes a projection extending in the same direction. The device further comprises a first annular member provided between the second rotating body and the third rotating body, A damper device characterized in that the first annular member separates the first main surface and the second main surface, thereby forming a first gap between the projection and the first main surface of the second rotating body, and / or a second gap between the projection and the second main surface of the third rotating body.