JP7392449B2 - damper device - Google Patents

Description

The technology disclosed in this application relates to a damper device.

In a vehicle or the like, a damper device is provided on a torque transmission path between a drive source such as an engine and a transmission to absorb vibrations of torque transmitted from the drive source to the transmission. The damper device is incorporated into a clutch device, for example.

A typical damper device has a coil spring interposed between a disk plate as an input member and a hub as an output member that can rotate relative to each other, and torque fluctuations are controlled based on the elastic deformation of the coil spring. Techniques for absorbing and attenuating are known.

In order to improve the damping function (torsion characteristics) of a damper device, it is generally known to increase the capacity of the coil spring. Specifically, increasing the outer diameter and lengthening the stroke of the coil spring is known. It is preferable to do so. For example, Patent Document 1 discloses a damper device that improves torsional characteristics by using four coil springs and arranging each two pairs of coil springs in series to increase the stroke length of the coil springs. There is.

JP2018-96448A

However, even in the damper device described in Patent Document 1, there is room for improvement in terms of improving its damping function. On the other hand, arranging the coil spring on the outside in the radial direction directly leads to an increase in the size of the damper device. For example, considering that the damper device is installed in a limited space such as a vehicle, it is expected to realize a damper device with further improved damping function without increasing the size.

Therefore, various embodiments provide a damper device with improved damping function without increasing the size.

A damper device according to one embodiment includes at least a first plate that rotates around a rotation axis, and a second plate that is arranged opposite to the first plate and rotates integrally with the first plate around the rotation axis. a first rotating body, a second rotating body that rotates relative to the first rotating body around the rotation axis, the first rotating body and the second rotating body being elastically connected in a rotational direction, and the first plate and an elastic mechanism housed in a housing section formed by the second plate, the housing section being located on the radially outer side of the elastic mechanism body and connecting the first plate or the second plate. a support portion that supports the elastic mechanism body in the radial direction and is formed of only a portion that extends to include at least a vector component in the axial direction; The window hole is opened so as to face each other.

According to this configuration, since the support part constituting a part of the accommodating part is configured to form a part of the outer diameter of the first plate or the second plate, the elastic mechanism body can be arranged radially outward compared to the conventional case. Therefore, the damper device having this configuration can maintain the same size as the conventional one (without increasing in size) and can have an improved damping function.

Further, in the damper device according to one aspect, the housing portion is formed integrally with the support portion and extends in a radial direction from the support portion toward the rotation axis, Preferably, the window hole further includes a flange portion forming at least a part of the outer edge of the window hole.

With this configuration, sufficient strength is ensured in the support section when the support section supports the elastic mechanism body in the radial direction.

Moreover, in the damper device according to one aspect, it is preferable that the flange portion forms an entire outer edge of the window hole.

With this configuration, when the support part supports the elastic mechanism body in the radial direction, more sufficient strength is ensured in the support part.

Further, in the damper device according to one aspect, it is preferable that at least a portion of the first plate and the second plate be provided with a reinforcing portion that supports the circumferential end portion of the support portion from the outside in the radial direction. .

With this configuration, when the support section supports the elastic mechanism body in the radial direction, the strength at the circumferential end portion of the support section where stress from the elastic mechanism body based on centrifugal force is concentrated is increased. It can be made into something.

Further, in the damper device according to one aspect, it is preferable that the support portion has an arc shape, and a center point of the arc shape is located radially outward than the rotation axis.

With this configuration, it is possible to improve the damping function without increasing the size of the damper device, and to efficiently reduce interference (interference hysteresis torque) occurring between the elastic mechanism and the support section. I can do it. Thereby, the wear resistance of the elastic mechanism body and the support portion can be improved.

Further, in the damper device according to one aspect, the elastic mechanism includes a coil spring and a pair of seat portions that hold ends of the coil spring, and one of the pair of seat portions has a coil spring. 2. A first pressure receiving part provided on the second rotating body and facing the outer diameter side part, a second pressure receiving part facing the inner diameter side part provided on the second rotating body, and a convex part provided on the second rotating body. At the initial stage when the second rotating body starts to rotate relative to the first rotating body, the outer diameter side portion and the first pressure receiving portion, and the inner diameter side portion and the second pressure receiving portion are formed. Preferably, the pressure receiving parts are in contact with each other, and the convex part and the concave part are spaced apart from each other.

With this configuration, the damping function can be improved without increasing the size of the damper device, and the interference (interference hysteresis torque) generated between the elastic mechanism and the second rotating body can be efficiently reduced. can be done.

The damper device according to another aspect includes at least a first plate that rotates around a rotation axis, and a second plate that is arranged opposite to the first plate and rotates integrally with the first plate around the rotation axis. a second rotating body that rotates relative to the first rotating body around the rotation axis; the first rotating body and the second rotating body are elastically coupled in the rotational direction; an elastic mechanism housed in a housing section formed by the first plate and the second plate, the housing section being located on the radially outer side of the elastic mechanism body, and the housing section being located on the outside in the radial direction of the elastic mechanism body. 2. A support part forming a part of the outer diameter of the plate and having an arc shape in a cross-sectional shape including the rotation axis and supporting the elastic mechanism body in the radial direction; and a support part facing the elastic mechanism body. and a window hole opened like this, and the center point of the arc shape is located only radially inside with respect to the support part.

Also in the damper device having this configuration, since the support portion that constitutes a part of the accommodation portion is configured to form a part of the outer diameter of the first plate or the second plate, the elastic It becomes possible to arrange the mechanism body on the outside in the radial direction compared to the conventional structure. Therefore, the damper device having this configuration can maintain the same size as the conventional one (without increasing in size) and can have an improved damping function.

According to various embodiments, it is possible to provide a damper device with improved damping function without increasing the size.

1 is a partially cutaway schematic top view schematically showing the configuration of a damper device according to an embodiment; FIG. FIG. 2 is a schematic cross-sectional view schematically showing the structure of the damper device shown in FIG. 1 when viewed from line AA'. FIG. 2 is a schematic top view showing an enlarged view of the vicinity of the housing part in the damper device shown in FIG. 1; It is a schematic top view which expands and shows the accommodating part vicinity in the damper apparatus based on 2nd Embodiment. It is a schematic top view which expands and shows the accommodating part vicinity in the damper apparatus based on 3rd Embodiment. It is a schematic sectional view which expands and shows a part of cross section of a damper device concerning a 4th embodiment typically. It is a schematic top view which expands and shows the shape of the support part in the damper device concerning 5th Embodiment typically. It is a schematic top view which expands typically and shows the engagement part of the hub and the seat member in the damper apparatus based on 6th Embodiment.

Various embodiments will be described below with reference to the accompanying drawings. Note that common constituent elements in the drawings are designated by the same reference numerals. Also, it should be noted that components depicted in one drawing may be omitted from another drawing for convenience of explanation. Furthermore, it should be noted that the attached drawings are not necessarily drawn to scale.

1. Structure of Damper Device An overview of the overall structure of a damper device according to an embodiment will be described with reference to FIGS. 1 to 3. FIG. FIG. 1 is a partially cutaway schematic top view schematically showing the configuration of a damper device 1 according to an embodiment. FIG. 2 is a schematic cross-sectional view schematically showing the structure of the damper device 1 shown in FIG. 1 as viewed from line AA'. FIG. 3 is an enlarged schematic top view showing the vicinity of the housing portion 105 in the damper device shown in FIG.

The damper device 1 according to one embodiment is provided on a power transmission path between a drive source (not shown) such as an engine or a motor and a transmission (not shown), and the power from the drive source is transmitted to a flywheel ( (not shown), and transmits (outputs) the power to a transmission or the like.

The damper device 1 absorbs and damps torque vibration. As shown in FIGS. 1 to 3, this damper device 1 mainly includes a disk plate 100 as a first rotating body, a hub 200 as a second rotating body, and an elastic mechanism 300. In addition to these components, the damper device 1 also includes various other components. The details of each component constituting the damper device 1 will be described below. In this specification, the axial direction means a direction extending parallel to the rotation axis O, the radial direction means a direction perpendicular to the rotation axis O, and the circumferential direction means a direction extending around the rotation axis O. It means the direction of rotation.

1-1. disc plate 100
The disk plate 100 transmits power from a drive source via the lining plate 10, and together with the lining plate 10, it can be considered as a component to which power is input in the damper device 1. Note that facings 20A and 20B are attached to the lining plate 10, and the facings 20A and 20B are configured to be compressed between a flywheel and a pressure plate (not shown). Note that known shapes and materials for the lining plate 10 and the pressure plate can be adopted.

The disk plate 100 is made of, for example, a metal material, and is provided rotatably around a rotation axis O, as particularly shown in FIGS. 1 and 2. More specifically, the disk plate 100 includes a first plate 101 and a second plate 102 as a pair of plate members that are provided on both sides of the hub 200 in the axial direction so as to sandwich the hub 200 therebetween, and that rotate around the rotation axis O. include.

The second plate 102 is arranged to face the first plate 101 in the axial direction. As shown in FIG. 2, the first plate 101 and the second plate 102 are integrally fixed together with the lining plate 10 by rivets R with the lining plate 10 sandwiched between them, so that they can rotate together. With such a configuration, the power transmitted from the flywheel to the lining plate 10 is transmitted to the first plate 101 and the second plate 102.

In addition, as shown in FIG. 2, the first plate 101 and the second plate 102 have a shape that bulges in the axial direction at a predetermined radial position compared to other radial positions, and has an elastic mechanism described later. A housing portion 105 is formed to house the body 300 therein.

The housing part 105 includes a support part 106 (in FIG. 1, corresponding to a housing part 105b and a housing part 105c, which will be described later), which is located on the outside in the radial direction of the elastic mechanism body 300 and supports the elastic mechanism body 300 in the radial direction. , a support portion 106b and a support portion 106c are shown), and a window hole 107 opened to face the elastic mechanism 300 in the axial direction (in FIG. 1, a storage portion 105b and a storage portion described later) 105c, a window hole 107b and a window hole 107c are shown).

Note that when the damper device 1 rotates, the elastic mechanism 300 is pushed outward in the radial direction under the influence of centrifugal force (for example, in FIG. 2, the elastic mechanism 300 moves upward in the paper). ), at this time, the support portion 106 supports the elastic mechanism 300 in the radial direction.

The support portion 106 forms part of the outer diameter of the first plate 101 or the second plate 102, as shown in FIGS. 1 to 3. In other words, the support portion 106 can be said to be the component disposed most radially outward in the first plate 101 and the second plate 102. Further, as shown in FIG. 2, the support portion 106 is composed of only a portion extending so as to include at least a vector component in the axial direction. Specifically, the support portion 106 is configured only in an arc shape that extends and includes a vector component in the axial direction, so as to correspond to the fact that the housing portions 105a to 105d described below have a substantially arc shape, for example. . Note that this arc shape may be a combination of multiple arc shapes with different curvatures in the cross-sectional shape including the rotation axis O, or may be a combination of multiple arc shapes with a single curvature. The center point of the arc shape may be located only on the inside in the radial direction with respect to the support portion 106. In other words, the center point of the arc shape is located at any position in the radial direction between the rotation axis O and the support portion 106, and the arc shape bulges in the direction away from the elastic mechanism 300.

Further, as shown in FIG. 2, the housing part 105 is a flange part formed integrally with the support part 106 and extending in the radial direction from the support part 106 toward the rotation axis O. 108. As shown in FIGS. 1 to 3, this flange portion 108 forms the outer edge of the window hole 107 (in FIG. 1, a flange portion 108b corresponds to the support portion 106b, and a flange portion portions 108c are each shown).

As described above, the flange portion 108 allows the support portion 106 to develop sufficient strength when the elastic mechanism 300 is supported by the support portion 106 by being pushed outward in the radial direction under the influence of centrifugal force. established for the purpose of Therefore, from the viewpoint of the strength of the support part 106, it is preferable that the flange part 108 is provided in a substantially square shape so as to form the entire outer edge of the window hole 107, as shown in FIG.

Note that, as shown in FIGS. 1 and 3, the first plate 101 and the second plate 102 in the damper device 1 according to one embodiment include a reinforcing portion that supports the circumferential end of the support portion 106 from the outside in the radial direction. 110 is provided. When the elastic mechanism body 300 is pushed outward in the radial direction under the influence of centrifugal force and is supported by the support part 106, stress tends to concentrate at the circumferential end of the support part 106. It is preferable to provide a reinforcing portion 110 to strengthen the strength of the circumferential end portion.

By the way, the first plate 101 and the second plate 102 cooperate with each other, and as shown in FIG. (In the example shown in FIG. 1, four accommodating portions 105a to 105d are shown). As shown in FIG. 1, each of the housing parts 105a to 105d houses a first elastic body 310 and a second elastic body 311 that extend along the circumferential direction of the disk plate 100 (first plate 101 or second plate 102). Therefore, it extends in a generally arcuate shape when viewed from above. Note that the regions I to IV refer to four regions each having a sector shape of approximately 90 degrees, as shown in FIG. 1 when the damper device 1 is viewed from above.

To explain specifically with reference to FIG. 1, the first plate 101 and the second plate 102 have accommodating portions 105a, 105b, 105c, and 105d extending along the circumferential direction in correspondence with regions I to IV, respectively. is formed. Note that the hub 200, which will be described later, is provided with cutouts 201a, 201b, 201c, and 201d having shapes corresponding to the accommodating portions 105a to 105d.

In addition, the disk plate 100 (first plate 101 and second plate 102) may function as the damper device 1 by appropriately combining conventionally known structures.

1-2. hub 200
The hub 200 as a second rotating body functions as an output member of the damper device 1, is made of, for example, a metal material, has a generally annular shape as a whole, and is sandwiched between the first plate 101 and the second plate 102. The disc plate 100 (the first plate 101 and the second plate 102) is rotatably provided around the rotation axis O. Further, as shown in FIG. 2, the hub 200 allows an input shaft (not shown) of a transmission to be inserted into a through hole 203 formed in a substantially cylindrical cylindrical portion 202, and is spline-coupled with the input shaft. be able to. The hub 200 also has an extending portion 205 extending radially outward from the cylindrical portion 202 .

Further, as described above, the hub 200 has cutouts 201a, 201b, 201c, and 201d having shapes corresponding to the accommodating portions 105a to 105d provided in the disk plate 100 at equal intervals between the respective extension portions 205. It is formed. These notches 201a, 201b, 201c, and 201d provided in the hub 200 correspond to the configuration of the elastic mechanism body 300 described later, more specifically, the number of first elastic bodies 310 (or second elastic bodies 311). It will be established as follows. That is, each of the cutouts 201a, 201b, 201c, and 201d accommodates an elastic mechanism 300, which will be described later.

Further, the extending portion 205 of the hub 200 is provided with an outer diameter side portion 206, an inner diameter side portion 207, and a convex portion 208 in order to engage with or abut a sheet member 320 in an elastic mechanism body 300, which will be described later. There is.

In addition, the hub 200 may be made to function as the damper device 1 by appropriately combining conventionally known structures.

1-3. Elastic mechanism 300
As shown in FIGS. 1 and 2, the elastic mechanism 300 includes, in each region I to IV, a first elastic body 310 as a coil spring, and a first elastic body 310 as a coil spring wound inside the first elastic body 310. A second elastic body 311, a floating stopper 315 accommodated inside the second elastic body 311, and a pair of sheet members 320 (first sheet member 320x and second elastic body 320x) that support the first elastic body 310 and the second elastic body 311 from both ends. It is mainly composed of two sheet members 320y). Note that although FIGS. 1 and 2 show an example in which two coil springs (the first elastic body 310 and the second elastic body 311) are used in each region I to IV, the present invention is not limited to this. For example, only one coil spring (first elastic body 310) is arranged in each region I to IV in accordance with the spring constants of the first elastic body 310 and the second elastic body 311 and the required damping function of the damper device 1. You may.

In the embodiment shown in FIGS. 1 and 2, for example, the disc plate 100 has four accommodating parts 105a to 105d (correspondingly, the hub 200 also has notches 201a, 201b, 201c as described above). , and 201d), one first elastic body 310 and one second An elastic body 311, one floating stopper 315, and a pair of sheet members 320 are accommodated.

The first elastic body 310 and the second elastic body 311 can be made of a commonly used metal, and can be an elliptical coil spring having a substantially elliptical cross section. In addition, the first elastic body 310 and the second elastic body 311 are wound in opposite directions (for example, the first elastic body 310 is wound clockwise and the second It is preferable to wind the elastic body 311 counterclockwise. Further, for the same reason, it is preferable that the winding pitch of the first elastic body 310 is set larger than the winding pitch of the second elastic body 311.

Next, the floating stopper 315 housed inside the second elastic body 311 can be easily rotated around the second elastic body 311 without damaging the surface of the second elastic body 311 and while exerting stable stopper torque. In order to be able to move in the direction, it is preferably made of a material that is lightweight and has high wear resistance, and for example, an inelastic body such as a cured resin or glass fiber can be used.

The floating stopper 315 is located within the second elastic body 311 when the disc plate 100 and the hub 200 are rotating together (that is, when the hub 200 is not rotating relative to the disc plate 100). It is in a state where it can move freely in the circumferential direction. On the other hand, when the hub 200 begins to rotate relative to the disk plate 100, the first elastic body 310 and the second elastic body 311 are elastically deformed while being pressed by the pressing portion 321x of the first sheet member 320x (for example, in FIG. (see Region I in 2013). After that, when the torsion angle related to the relative rotation between the disk plate 100 and the hub 200 becomes large, the floating stopper 315 presses the pressing part 321x of the first sheet member 320x and the pressing part 321y of the second sheet member 320y at a predetermined torsional angle. By being clamped, a stopper torque is exerted to stop excessive relative rotation of the hub 200 with respect to the disk plate 100 (to restrict relative rotation of the two beyond a predetermined twist angle).

Although the shape of the floating stopper 315 is not particularly limited, it is preferable that the floating stopper 315 as a whole has a substantially cylindrical shape or a substantially prismatic shape, for example, so as not to fit between the winding pitches of the second elastic body 311. Further, the floating stopper 315 may be placed in all of the areas I to IV described above, or, depending on the magnitude of the stopper torque exerted by the floating stopper 315, for example, only two places, area I and area III, may be placed. It may be placed in

As described above, the sheet members 320 (the first sheet member 320x and the second sheet member 320y) hold both ends of the first elastic body 310 and the second elastic body 311 in the accommodating parts 105a to 105d corresponding to the regions I to IV. Supportively accommodated. A known specific structure for supporting the first elastic body 310 and the second elastic body 311 in the sheet member 320 can be used, but in order to sandwich the floating stopper 315 between the pair of sheet members 320, In addition, pressing portions 321x and 321y are provided on the first sheet member 320x and the second sheet member 320y, respectively. The shape of the pressing portions 321x and 321y is not particularly limited, but as shown in FIG. 1, it is preferable that the pressing portions 321x and 321y have a shape that protrudes in the circumferential direction.

Further, the sheet member 320 includes a structure in which, when the elastic mechanism 300 as a whole is pushed outward in the radial direction under the influence of centrifugal force, it comes into contact with the aforementioned support section 106 and is supported in the radial direction by the support section. Outer peripheral portions 322x and 322y are provided.

Furthermore, the seat member 320 includes a first pressure receiving portion 326 facing the outer diameter side portion 206 so as to correspond to the aforementioned outer diameter side portion 206, inner diameter side portion 207, and convex portion 208 provided on the hub 200. , a second pressure receiving part 327 facing the inner diameter side part 207, and a recessed part 328 for receiving the convex part 208 are provided, respectively.

With the above configuration, the elastic mechanism 300 connects the disk plate 100 and the hub 200 via the sheet member 320 (the first sheet member 320x and the second sheet member 320y), the first elastic body 310, and the second elastic body 311. It is possible to elastically connect them in the rotational direction. That is, power from a drive source such as an engine or a motor is transmitted to the disk plate 100, the first sheet member 320x, the first elastic body 310 (and the second elastic body 311), the second sheet member 320y, and the hub 200 in this order. When the disk plate 100 and the hub 200 rotate relative to each other (assuming that power is transmitted in the positive clockwise direction), the first elastic body 310 and the second elastic body 311 are elastically deformed. (compressive deformation) to absorb torque fluctuations.

1-4. Other Components The damper device 1 according to the embodiment may include other conventionally known components in addition to the components described above. For example, in the damper device 1 according to one embodiment, as shown in FIGS. 1 and 2, a second elastic mechanism 400 may be provided radially inside the elastic mechanism 300 described above. In the case where the second elastic mechanism body 400 is provided, it is assumed that the hub 200 described above is divided into two members, an outer hub and an inner hub. Specifically, for example, the cylindrical portion 202 and the extending portion 205 in the hub 200 of one embodiment are made into separate members so that they can rotate relative to each other, and then the cylindrical portion 202 is provided with external teeth and extending portions. It is possible to adopt a configuration in which the portions 205 are provided with internal teeth so that they can mesh with each other. Furthermore, by arranging the second elastic mechanism 400 between the external teeth of the cylindrical part 202 and the internal teeth of the extension part 205, the second elastic mechanism 400 connects the cylindrical part 202 and the extension part 205. It can be elastically connected. By providing the second elastic mechanism 400 in this way, it is possible to further improve the damping function of the damper device 1.

In the damper device 1, the configuration in which the second elastic mechanism body 400 and the elastic mechanism body 300 are used in combination is already known, so detailed explanations of the structure other than those described above will be omitted. In addition, it goes without saying that the second elastic mechanism body 400 incorporated in the damper device 1 in one embodiment can appropriately combine known structures.

2. Modification Next, another embodiment of the damper device 1 will be described.

2-1. Second Embodiment A damper device 1 according to a second embodiment will be described with reference to FIG. 4. FIG. 4 is an enlarged schematic top view showing the vicinity of the housing portion 105 in the damper device 1 according to the second embodiment.

The damper device 1 according to the second embodiment has a generally similar configuration to the damper device 1 according to the above-described embodiment, except that the flange portion 108 is not provided in the housing portion 105, as shown in FIG. This differs from one embodiment. As described above, the flange portion 108 is provided to ensure the strength necessary for the support portion 105 to support the elastic mechanism body 300 in the radial direction, but it depends on the thickness and material of the support portion 106, and the elastic mechanism body. Considering the weight of the elastic mechanism 300, etc., the flange portion 108 may be omitted as long as the support portion 106 alone can support the elastic mechanism body 300 in the radial direction. This makes it possible to reduce the weight of the damper device 1 as a whole compared to one embodiment.

Note that the other configurations of the damper device 1 according to the second embodiment are the same as those of the damper device 1 of the first embodiment, so detailed explanations of the configuration will be omitted.

2-2. Third Embodiment Next, a damper device 1 according to a third embodiment will be described with reference to FIG. 5. FIG. 5 is an enlarged schematic top view showing the vicinity of the housing portion 105 in the damper device 1 according to the third embodiment.

The damper device 1 according to the third embodiment has generally the same configuration as the damper device 1 according to the above-described embodiment, but as shown in FIG. This embodiment differs from the embodiment in that Specifically, the flange portion 108 in one embodiment is provided in a substantially square shape so as to form the entire outer edge of the window hole 107, whereas the flange portion 108 in the third embodiment is provided in a substantially square shape so as to form the entire outer edge of the window hole 107. It is provided so as to form only the radially outer outer edge of. As described in the second embodiment, the flange portion of one embodiment may be modified as necessary, taking into consideration the thickness and material of the support portion 106, the weight of the elastic mechanism 300, the strength of the support portion 106, etc. 108 (approximately square-shaped), or the flange 108 of the third embodiment (a configuration that forms only the radially outer outer edge of the window hole 107).

Note that the other configurations of the damper device 1 according to the third embodiment are the same as those of the damper device 1 of one embodiment, so a detailed explanation of the configuration will be omitted.

2-3. Fourth Embodiment Next, a damper device 1 according to a fourth embodiment will be described with reference to FIG. 6. FIG. 6 is a schematic sectional view schematically showing an enlarged cross section of a part of the damper device 1 according to the fourth embodiment.

The damper device 1 according to the fourth embodiment has generally the same configuration as the damper device 1 according to the above-described embodiment, but as shown in FIG. It differs from the embodiment in that it extends longer in the circumferential direction than the embodiment.

Specifically, as shown in FIG. 2, the support portion 106 in one embodiment is configured such that the support portion 106 extends separately in the circumferential direction from the first plate 101 and the second plate 102 that form the housing portion 105. A large gap G is formed between the support part 106 on the first plate 101 side and the support part 106 on the second plate 102 side. Generally, the vicinity of the facings 20A and 20B in the damper device 1 has a pinched structure, and therefore heat is likely to be generated due to friction. Therefore, as shown in FIG. 2, by providing the gap G, the heat dissipation near the facings 20A and 20B can be improved. Thereby, the heat-resistant life of not only the facings 20A and 20B but also the housing portion 105 (support portion 106) can be improved.

However, as in one embodiment, if a large gap G is formed between the support part 106 on the first plate 101 side and the support part 106 on the second plate 102 side, the support part 106 and the elastic mechanism 302 The contact area with the outer peripheral parts 322x and 322y of the sheet member 320 becomes relatively small, and the abrasion resistance of the support part 106 and the outer peripheral parts 322x and 322y becomes a problem. In this regard, it is possible to adopt a method such as increasing the thickness of the support part 106 and the outer peripheral parts 322x and 322y, but for example, as in the fourth embodiment, the support part 106 on the first plate 101 side It is also possible to adopt a method in which the supporting portion 106 on the second plate 102 side is extended in the circumferential direction to reduce the gap between them (the gap H in FIG. 6). For example, a structure may be adopted in which the gap H is omitted and the support part 106 on the first plate 101 side and the support part 106 on the second plate 102 side are connected.

In this way, there is a substantial trade-off relationship between the above-mentioned viewpoints of improving heat dissipation and improving wear resistance. The structure according to the fourth embodiment may be adopted, or the structure according to the fourth embodiment may be adopted.

2-4. Fifth Embodiment Next, a damper device 1 according to a fifth embodiment will be described with reference to FIG. 7. FIG. 7 is a schematic top view schematically showing an enlarged shape of the support portion 106 in the damper device 1 according to the fifth embodiment.

The damper device 1 according to the fifth embodiment has almost the same configuration as the damper device 1 according to the above-described embodiment, but as shown in FIG. Different from the embodiment.

Specifically, as described above with reference to FIG. It has an arc shape in the direction. The center point of the circular arc shape of the support portion 106 is formed to be the rotation axis O, which is the center point of the first plate 101 or the second plate 102, as shown in FIG.

On the other hand, the support portion 106' in the fifth embodiment is formed such that the center point O' of the arc shape is located on the outer side of the rotation axis O in the radial direction. As a result, the arcuate shape of the support portion 106' in the fifth embodiment takes on a shape that swells slightly outward in the radial direction than the hypothetical curve W corresponding to the arcuate shape of the first plate 101 (or second plate 102). I can do it. By adopting such a shape, the circular arc shape corresponding to the operating radius of the first elastic body 310 constituting the elastic mechanism body 300 (corresponding to the above-mentioned assumed curve W) and the circular arc shape of the support portion 106' are aligned. I won't be able to do it. As a result, when relative rotation occurs between the disk plate 100 and the hub 200 and the seat member 320 moves in the circumferential direction within the housing portion 105 while elastically deforming the first elastic body 310, the outer circumference of the seat member 320 A gap K is partially generated between the portions 322x and/or 322y and the support portion 106 (in FIG. 7, a gap K is generated between the outer peripheral portion 322y and the support portion 106'). (shown below). This makes it possible to reduce the amount of sliding between the support part 106 (support part 106') and the outer circumferential parts 322x and 322y of the sheet member 320 (that is, the chance of contact between the support part 106 and the outer circumferential part 322x). , it becomes possible to reduce the chance of contact between the support part 106 and the outer peripheral part 322y), and as a result, the wear resistance of the support part 106 and the outer peripheral parts 322x and 322y can be improved.

2-5. Sixth Embodiment Next, a damper device 1 according to a sixth embodiment will be described with reference to FIG. 8. FIG. 8 is a schematic top view schematically showing an enlarged engagement portion between the hub 200 and the seat member 320 in the damper device 1 according to the sixth embodiment.

The damper device 1 according to the sixth embodiment has generally the same configuration as the damper device 1 according to the above-described embodiment, but as shown in FIG. It has a similar structure. As described in the damper device 1 in one embodiment, the extending portion 205 of the hub 200 includes an outer diameter side portion 206, an inner diameter side portion 207, and a convex portion for engaging or abutting the seat member 320. 208 is provided. On the other hand, the sheet member 320 is provided with a first pressure receiving part 326 facing the outer diameter side part 206, a second pressure receiving part 327 facing the inner diameter side part 207, and a recessed part 328 for receiving the convex part 208, respectively.

Here, in the damper device 1 according to the sixth embodiment, at the time (initial time) when the hub 200 starts to rotate relative to the disk plate 100 and the hub 200 engages with (contacts) the sheet member 320, As shown in FIG. 8, the outer diameter side portion 206 of the hub 200 and the first pressure receiving portion 326 of the seat member 320, and the inner diameter side portion 207 of the hub 200 and the second pressure receiving portion 327 of the seat member 320 are in contact with each other. On the other hand, the convex portion 208 in the hub 200 and the concave portion 328 in the sheet member 320 remain separated from each other, and a gap Z exists between the two members. In this configuration, when the outer diameter side part 206 and the first pressure receiving part 326 and the inner diameter side part 207 and the second pressure receiving part 327 contact each other, the sheet member 320 resists the centrifugal force during rotation, Since its outer peripheral side is supported by the support portion 106 of the disk plate 100 (the first plate 101 and the second plate 102), the convex portion 208 and the concave portion 328 can be separated from each other. With this configuration, it is possible to efficiently reduce the generation of hysteresis torque due to initial interference between the hub 200 and the seat member 320.

As mentioned above, various embodiments have been illustrated, but the above embodiments are merely examples and are not intended to limit the scope of the invention. The embodiments described above can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. Moreover, each structure, shape, size, length, width, thickness, height, number, etc. can be changed and implemented as appropriate.

1 Damper device 100 First rotating body (disk plate)
101 First plate 102 Second plate 105 Storage part 106, 106' Support part 107 Window hole 108 Flange part 110 Reinforcement part 200 Second rotating body (hub)
205 Extending portion 206 Outer diameter side portion 207 Inner diameter side portion 208 Convex portion 300 Elastic mechanism body 310 First elastic body (coil spring)
320 Sheet member 326 First pressure receiving part 327 Second pressure receiving part 328 Recess O Rotating shaft O' Center point

Claims (7)

a first rotating body having at least a first plate that rotates around a rotation axis; and a second plate that is arranged opposite to the first plate and rotates integrally with the first plate around the rotation axis;
a second rotating body that rotates relative to the first rotating body around the rotation axis;
an elastic mechanism that elastically connects the first rotating body and the second rotating body in a rotational direction and is housed in a housing formed by the first plate and the second plate;
Equipped with
The accommodating portion is located on the outside in the radial direction of the elastic mechanism body, forms a part of the outer diameter of the first plate or the second plate, and is comprised only of a portion that extends at least in the axial direction. A damper device comprising: a support portion that supports the elastic mechanism in a radial direction; and a window hole that is opened to face the elastic mechanism. The accommodating portion is formed integrally with the support portion, extends radially from the support portion toward the rotation axis, and forms at least a portion of an outer edge of the window hole. The damper device according to claim 1, further comprising a flange portion. The damper device according to claim 2, wherein the flange portion forms an entire outer edge of the window hole. According to any one of claims 1 to 3, at least a portion of the first plate and the second plate is provided with a reinforcing portion that supports the circumferential end portion of the support portion from the outside in the radial direction. The damper device described. The damper device according to any one of claims 1 to 4, wherein the support portion has a circular arc shape, and a center point of the circular arc shape is located on a radially outer side of the rotation axis. The elastic mechanism has a coil spring and a pair of seat parts that hold ends of the coil spring,
One of the pair of seat parts includes a first pressure receiving part facing the outer diameter side part provided on the second rotating body, and a second pressure receiving part facing the inner diameter side part provided on the second rotating body. , and a recess for receiving the projection provided on the second rotating body,
At an initial stage when the second rotating body starts to rotate relative to the first rotating body, the outer diameter side portion and the first pressure receiving portion, and the inner diameter side portion and the second pressure receiving portion are in contact with each other. 6. The damper device according to claim 1, wherein the convex portion and the concave portion are spaced apart from each other. a first rotating body having at least a first plate that rotates around a rotation axis; and a second plate that is arranged opposite to the first plate and rotates integrally with the first plate around the rotation axis;
a second rotating body that rotates relative to the first rotating body around the rotation axis;
an elastic mechanism that elastically connects the first rotating body and the second rotating body in a rotational direction and is housed in a housing formed by the first plate and the second plate;
Equipped with
The accommodating portion is located on the radially outer side of the elastic mechanism, forms part of the outer diameter of the first plate or the second plate, and has an arcuate cross-sectional shape including the rotation axis. , having a support part that supports the elastic mechanism body in a radial direction, and a window hole opened so as to face the elastic mechanism body,
The center point of the arc shape is located only on the inside in the radial direction with respect to the support part,
damper device.

Images