JP2019100367A - Two-way clutch device for vehicle - Google Patents

Abstract

To provide a two-way clutch device for making an engagement piece quickly engaged with a cam face of an inside member and an internal peripheral face of an outside member, and reducible in its size in a rotational axial line direction when transmitting rotation to the outside member from the inside member.SOLUTION: A roller 24 is held in a second wedge space Sr2 by a switch spring 32 in which rotation in a first rotation direction F1 around a first rotational axial line direction C1 of an input shaft 12 which is high in a use frequency is transmitted to an output member 14 via rollers 24 when transmitting the rotation to the output member 14 from the input shaft 12, and the rollers 24 can be thereby quickly engaged with a cam face 12b of the input shaft 12 and an internal peripheral face 14b of the output member 14 when transmitting the rotation to the output member 14 from the input shaft 12. Furthermore, since it is not necessary to arrange a forward rotation engagement piece and a reverse rotation engagement piece as the rollers 24 as before, a two-way clutch device 10 can be reduced in size in the first rotational axial line direction C1.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a two-way clutch device for a vehicle, and in the case of transmitting rotation from an inner member to an outer member while the vehicle is traveling, the cams formed on the inner member and the inner peripheral surface of the outer member are swift And a two-way clutch device for vehicles can be miniaturized as compared with the prior art.

  (A) an outer member rotatably supported about the rotation axis; (b) an inner member rotatably disposed about the rotation axis in a hole formed in a central portion of the outer member; A cam surface formed on the outer peripheral surface of the inner member, (d) an engaging element disposed between the inner peripheral surface of the outer member and the cam surface of the inner member, (e) the outer member A retainer which is disposed between the inner peripheral surface of the inner member and the outer peripheral surface of the inner member and holds the position of the engaging element relative to the cam surface of the inner member in the rotational direction about the rotation axis; An actuator for relatively rotating the retainer relative to the inner member about the rotation axis to move the position of the engagement element relative to the cam surface, and (g) from the central position of the cam surface to the rotation direction Toward the inner circumferential surface of the outer member and the front A pair of wedge spaces whose radial distance between the inner member and the cam surface is short is formed at both ends of the space between the inner peripheral surface of the outer member and the cam surface of the inner member, (h) When the engaging element is moved to one of the pair of wedge spaces by the actuator, one-way rotation of the inner member is transmitted to the outer member, and (i) the engaging element is caused to move by the actuator. A two-way clutch device for a vehicle is known, which, when moved to the other side, transmits rotation of the inner member in the opposite direction to the one direction to the outer member. For example, the two-way clutch device for vehicles described in Patent Document 1 is that.

  In the two-way clutch device for a vehicle according to Patent Document 1, a plurality of forward rotation engagement elements (engagement elements), i.e., a forward rotation engagement element group for transmitting rotation in one direction of the inner member to the outer member A plurality of reverse rotation engagement elements (engagement elements) which are disposed at a position shifted from the central position of the circumferential length to one end side in the circumferential direction and which transmits the rotation in the direction opposite to the one direction of the inner member to the outer member That is, the reverse rotation engaging element group is disposed at a position offset from the central position of the circumferential length of the cam surface to the other end side in the circumferential direction. In order to transmit rotation of the inner member in one direction to the outer member, the engagement member for forward rotation promptly engages with the cam surface of the inner member and the inner peripheral surface of the outer member. When the rotation in the direction opposite to the one direction of the inner member is to be transmitted to the outer member, the reverse rotation engaging element promptly engages with the cam surface of the inner member and the inner peripheral surface of the outer member. It is supposed to match. That is, when transmitting the rotation from the inner member to the outer member while the vehicle is traveling, the engagement member for forward rotation or the engagement member for reverse rotation, which is an engagement member, has the cam surface of the inner member and the inner circumferential surface of the outer member. To be engaged promptly.

JP 2008-89163 A

  By the way, in the two-way clutch device for vehicles like the above-mentioned patent documents 1, while running vehicles by providing a plurality of rows, ie, two rows, of the engagement member for forward rotation and the engagement member for reverse rotation as engagement members in the rotation axis direction. When transmitting rotation from the inner member to the outer member, the forward rotation engagement member or the reverse rotation engagement member may be promptly engaged with the cam surface of the inner member and the inner circumferential surface of the outer member. However, there is a problem that the two-way clutch device for a vehicle is increased in size in the direction of the rotation axis by providing multiple rows of the engagement elements for normal rotation and the engagement elements for reverse rotation in the rotation axis direction as engagement elements. .

  The present invention has been made against the background described above, and an object of the present invention is to provide a cam having an engaging member formed on an inner member when transmitting rotation from the inner member to the outer member while the vehicle is traveling. To provide a two-way clutch device for a vehicle, which can be promptly engaged with the surface and the inner peripheral surface of the outer member, and the two-way clutch device for a vehicle can be miniaturized in the rotational axis direction as compared with the prior art. is there.

  According to a first aspect of the present invention, there is provided: (a) an outer member rotatably supported about an axis of rotation, and a hole formed in a central portion of the outer member rotatably disposed about the axis of rotation An inner member, a cam surface formed on the outer peripheral surface of the inner member, an engaging element disposed between the inner peripheral surface of the outer member and the cam surface of the inner member, and the inside of the outer member A retainer, disposed between the circumferential surface and the outer circumferential surface of the inner member, for retaining the position of the engaging element with respect to the cam surface of the inner member in the rotational direction about the rotation axis; An actuator for relatively rotating the member relative to the rotational axis to move the position of the engagement element relative to the cam surface, and the outer member moving from the central position of the cam surface toward the rotational direction Inner surface and the inner side A pair of wedge spaces where the radial distance between the material and the cam surface is short is formed at both ends of the space between the inner peripheral surface of the outer member and the cam surface of the inner member, and the actuator When the engaging element is moved to one of the pair of wedge spaces, the rotation in one direction of the inner member is transmitted to the outer member, and the actuator is moved to the other of the pair of wedge spaces by the actuator. It is a two-way clutch device for vehicles which transmits rotation of the opposite direction to one direction of the above-mentioned inner member to the above-mentioned outside member, and (b) between the above-mentioned inner circumference member and the above-mentioned retainers An elastic member is provided to bias the cage to be held in one of the pair of wedge spaces, and (c) the one wedge space is from the inner member to the outer member. To Wedge space for transmitting rotation in the first rotational direction about the rotation axis in the frequently used inner member when transmitting rotation to the outer member via the engaging element, and (d) the first rotation When the rotation in the direction opposite to the first rotation direction, which is less frequently used compared to the direction, is transmitted from the inner member to the outer member, the actuator causes the engaging element to move in the other of the pair of wedge spaces. The holder is moved against the biasing force of the elastic member so as to move to the wedge space.

  According to the first invention, (b) between the inner circumferential member and the cage, the cage is held such that the engaging element is held in one of the pair of wedge spaces. A biasing elastic member is provided, and (c) the one wedge space is a first space around the rotation axis of the inner member which is frequently used when transmitting rotation from the inner member to the outer member. A wedge space for transmitting rotation in the rotational direction to the outer member via the engaging element, and (d) rotating in the direction opposite to the first rotational direction, which is less frequently used than the first rotational direction. When transmitting from the inner member to the outer member, the retainer resists the biasing force of the elastic member so that the engaging element moves to the other wedge space of the pair of wedge spaces by the actuator. Move To. For this reason, when transmitting rotation from the inner member to the outer member while the vehicle is traveling, rotation of the first member in the first rotational direction about the rotation axis in the frequently used inner member is performed via the engaging element. Since the engaging element is held by the elastic member in the one wedge space to be transmitted, the engaging element is transmitted to the inner member when transmitting the rotation from the inner member to the outer member while the vehicle is traveling. The formed cam surface can be quickly engaged with the inner peripheral surface of the outer member. Further, since there is no need to provide two types of engagement elements for forward rotation and reverse rotation as in the prior art as in the prior art, it is possible to miniaturize the two-way clutch device for a vehicle in the rotational axis direction. it can.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing explaining the structure of the two-way clutch apparatus for vehicles to which this invention was applied suitably. FIG. 2 is a cross-sectional view taken along line II-II of FIG. It is the enlarged view to which a part of sectional drawing of FIG. 2 was expanded. It is the enlarged view to which a part of IV-IV visual sectional drawing of FIG. 1 was expanded.

  In the embodiment of the present invention, (a) in the actuator, the piston, which is movably fitted in the direction of the rotation axis in the central hole formed in the inner member, is moved in the direction of the rotation axis A holder moving mechanism for moving a holder is provided, and (b) the holder moving mechanism includes a conical conical portion formed on the piston, and (c) an inner circumferential surface of the holder. An inclined surface inclined such that the thickness of the cage decreases as it rotates around the rotation axis, and (d) an end portion abutted to a tapered surface formed in the conical portion and the cage A switch pin having a second end portion abutted to a slope formed on the inner surface of the inner member and arranged radially movably relative to the inner member; In the mechanism the piston is When the switch pin is moved to the side approaching the switch pin in the axial direction, the switch pin is moved radially outward by the tapered surface of the conical portion formed on the piston, and the slope of the retainer is the switch When pressed by the other end of the pin, the holder is rotated relative to the inner member about the rotation axis against the biasing force of the elastic member. Therefore, in the holder moving mechanism, the holder can be relatively rotated around the rotation axis with respect to the inner member by moving the piston in the rotation axis direction.

  In the embodiment of the present invention, (a) a plurality of cam surfaces are formed on the outer peripheral surface of the inner member in the circumferential direction of the inner member, and (b) a plurality of cams formed on the inner member The engagement elements are respectively disposed between the surface and the inner circumferential surface of the outer member, and (c) a plurality of insertions in which the engagement elements are movably fitted around the rotation axis in the holder. A hole and an engagement element holding member for holding the engagement element at a position between the pair of wedge spaces are provided, and (d) the engagement element holding member rotates the rotation of the engagement element holding member. (E) a first elastic portion which biases the engagement element toward the first rotation direction wedge space of the pair of wedge spaces when moving in the first rotation direction around an axis; The first rotating manner of the holding member around the rotation axis A second elastic portion for urging toward the opposite direction of the wedge spaces of the moves in the opposite direction the engager the pair of wedge spaces, are provided with. For this reason, when the holder is relatively rotated about the rotation axis with respect to the inner member by the actuator, the plurality of engaging elements are respectively paired by the first elastic portion or the second elastic portion. It is preferably held in one of the wedge spaces.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, the drawings are appropriately simplified or modified, and the dimensional ratios and shapes of the respective parts are not necessarily drawn accurately.

  FIG. 1 is a cross-sectional view for explaining the configuration of a two-way clutch device (two-way clutch device for a vehicle) 10 to which the present invention is applied. The two-way clutch device 10 is used, for example, as a clutch device that travels by separating an engine, which is a driving power source, from a power transmission path connecting a driving wheel during inertia running with an accelerator off.

  As shown in FIG. 1, the two-way clutch device 10 includes, for example, an input shaft (inner member) 12 coupled to a driving power source, for example, an engine via an automatic transmission. An output member (outer member) 14 connected in a power transmitting manner with the wheel is provided. The automatic transmission functions as, for example, a stepped automatic transmission in which a plurality of forward gear stages having different gear ratios and one reverse gear stage are formed.

  As shown in FIG. 1, the input shaft 12 is rotatably supported, for example, by a case member (not shown) or the like via a pair of first bearings 16 and 18 around a first rotation axis (rotation axis) C1. . The output member 14 is formed in an annular shape in which a through hole (hole) 14 a is formed in the central portion, and a part of the input shaft 12 is disposed in the through hole 14 a of the output member 14. Further, a pair of second bearings 20, 22 are interposed between the inner circumferential surface 14b of the output member 14 and the outer circumferential surface 12a of the input shaft 12, and the output member 14 is disposed around the first rotation axis C1. The input shaft 12 is rotatably, i.e., via the pair of second bearings 20, 22 coaxially with the first rotation axis C1 of the input shaft 12 via the pair of second bearings 20, 22. It is supported by

  On the outer peripheral surface 12a of the input shaft 12, as shown in FIG. 2, seven cam surfaces 12b are formed around the first rotation axis C1, that is, in the circumferential direction of the input shaft 12, in the present embodiment. Further, as shown in FIG. 2, in the cylindrical space S between the inner circumferential surface 14 b of the output member 14 and the outer circumferential surface 12 a of the input shaft 12, a plurality of the inner circumferential surface 14 b of the output member 14 and the input shaft 12 Between each of the cam surfaces 12b and the cam surface 12b, seven accommodation spaces (spaces) Sr are formed in the plurality of embodiments in which the cylindrical roller (engagement element) 24 is accommodated. In the two-way clutch device 10, as shown in FIG. 1, in the cylindrical space S between the inner peripheral surface 14b of the output member 14 and the outer peripheral surface 12a of the input shaft 12, the plurality of rollers 24 is the first. A first rotation axis is provided to increase torque transfer capacity between a first roller group A1 disposed around the rotation axis C1 and a second roller group A2 having a plurality of rollers 24 disposed around the first rotation axis C1. Although provided in parallel in the C1 direction, it is not always necessary. In the two-way clutch device 10 of the present embodiment, the first roller group A1 and the second roller group A2, that is, two rows of roller groups having the same shape are held by the holder 26 described later. The shapes and functions of parts around the first roller group A1 will be representatively described using FIG. 3, and the descriptions of the shapes and functions of parts around the second roller group A2 will be omitted.

  In each accommodation space Sr, as shown in FIG. 3, the inner circumferential surface 14b of the output member 14 and the input shaft are taken from the central position Cc of the cam surface 12b around the first rotation axis C1 toward the first rotation direction F1. The first wedge space (the other wedge space) Sr1 in which the radial distance D between the cam surface 12b and the cam surface 12b is shorter, and the first rotational direction F1 around the first rotational axis C1 from the central position Cc of the cam surface 12b A second wedge space (one wedge space) Sr2 is formed in which the radial distance D between the inner circumferential surface 14b of the output member 14 and the cam surface 12b of the input shaft 12 becomes shorter toward the opposite direction. ing. That is, a first wedge space Sr1 and a second wedge space Sr2 are formed at both ends of the housing space Sr in the rotational direction about the first rotation axis C1. The accommodation space Sr is such that the radial distance D between the cam surface 12b at the central position Cc of the cam surface 12b and the inner circumferential surface 14b of the output member 14 is larger than the diameter R of the cylindrical roller 24 and the cam The radial distance D between the cam surface 12b and the inner circumferential surface 14b of the output member 14 at the end on the first rotation direction F1 side of the surface 12b becomes smaller than the diameter R of the roller 24, and the first rotation direction of the cam surface 12b The radial distance D between the cam surface 12b and the inner peripheral surface 14b of the output member 14 at the end opposite to the F1 side is designed to be smaller than the diameter R of the roller 24. In the first rotation direction F1 described above, for example, the rotation direction in which the input shaft 12 is rotationally driven by the driving force from the engine when the vehicle moves forward, ie, when the forward gear is formed by the automatic transmission. The first rotation direction F1 is a rotation direction around the first rotation axis C1 in the input shaft 12 that is frequently used when transmitting rotation from the input shaft 12 to the output member 14 while the vehicle is traveling. Further, for example, when the vehicle reverses, that is, when a reverse gear is formed by the automatic transmission, the input shaft 12 is rotationally driven by the driving force from the engine. The rotation direction opposite to the first rotation direction F1 is the first rotation of the input shaft 12 which is less frequently used when transmitting the rotation from the input shaft 12 to the output member 14 while the vehicle is traveling. It is a rotation direction around the axis C1.

  The two-way clutch device 10 is disposed in a cylindrical space S between the inner peripheral surface 14b of the output member 14 and the outer peripheral surface 12a of the input shaft 12 as shown in FIGS. The cylindrical cage 26 holding the position of the roller 24 relative to the cam surface 12 b of the input shaft 12 in the rotational direction around the axis C 1, and the cage 26 relative to the input shaft 12 about the first rotation axis C 1 And an actuator 28 for moving the position of the roller 24 relative to the cam surface 12b.

  As shown in FIG. 2 and FIG. 3, the retainer 26 is fitted with a plurality of fittables that allow the roller 24 to move with respect to the retainer 26 about the first rotation axis C1 and to be immovable in the first rotation axis C1 direction. A hole 26a and an engagement element holding member 30 for holding the respective rollers 24 at positions between the first wedge space Sr1 and the second wedge space Sr2 in the accommodation space Sr are provided. Further, in the engagement element holding member 30, the engagement element holding member 30, that is, the holder 26 to which the engagement element holding member 30 is attached moves relative to the input shaft 12 in the first rotational direction F1 around the first rotation axis C1. Then, the first plate spring portion (that biases the plurality of rollers 24 toward the wedge space on the side of the first rotational direction F1 of the pair of first wedge space Sr1 and second wedge space Sr2, ie, the first wedge space Sr1 The first elastic portion 30a and the retainer 26 to which the engagement member holding member 30, ie, the engagement member holding member 30 is attached, is in the direction opposite to the first rotation direction F1 around the first rotation axis C1 with respect to the input shaft 12. When the relative movement is performed, the plurality of rollers 24 are moved to the wedge space on the side opposite to the first rotation direction F1 of the pair of the first wedge space Sr1 and the second wedge space Sr2, ie, the second wedge space. The second plate spring portion for biasing respectively toward the fine space Sr2 (second elastic portions) 30b, is provided.

  As shown in FIGS. 2 and 3, between the input shaft 12 and the cage 26, the roller 24 is a wedge space of one of the first wedge space Sr1 and the second wedge space Sr2. A coiled switch spring (elastic member) 32 is provided to bias the holder 26 so as to be held in the space Sr2. A spring accommodation hole 26b for accommodating the coil-shaped switch spring 32 is formed in the holder 26, and both ends of the coil-shaped switch spring 32 are provided with a spring receiving pin 34 fixed to the input shaft 12 It is disposed in a compressed state with the side surface 26c of the spring receiving hole 26b. As a result, the cage 26 is urged to rotate relative to the input shaft 12 in the direction opposite to the first rotation direction F1 by the elastic return force of the coil-shaped switch spring 32. The respective rollers 24 are brought into contact with the inner peripheral surface 14b of the output member 14 forming the second wedge space Sr2 and the cam surface 12b of the input shaft 12 via the second plate spring portion 30b of the engagement member holding member 30. The respective rollers 24 are held in the second wedge space Sr2. When the roller 24 is held in the second wedge space Sr2, the rotation of the input shaft 12 in the first rotational direction F1 can be transmitted to the output member 14 via the roller 24. In addition, for example, when the roller 24 is held in the first wedge space Sr1, the rotation in the direction opposite to the first rotation direction F1 in the input shaft 12 can be transmitted to the output member 14 via the roller 24. When the roller 24 is held between the first wedge space Sr1 and the second wedge space Sr2 in the housing space Sr, the rotation of the input shaft 12 is transferred to the output member 14 via the roller 24 regardless of the rotation direction. It can not be transmitted.

  In the actuator 28, as shown in FIG. 1, the piston 36 fitted movably in the direction of the first rotation axis C1 in the central hole 12c formed in the central portion of the input shaft 12 and the piston 36 are hydraulically A hydraulic drive (not shown) for driving in the direction of one rotation axis C1 and a holder moving mechanism 40 for moving the holder 26 by moving the piston 36 in the direction of the first rotation axis C1 by the hydraulic drive. And are equipped. In the hydraulic drive system, the hydraulic pressure applied to the piston 36 is output from a linear solenoid valve (not shown) controlled by an electronic control unit (not shown).

  In the cage moving mechanism 40, as shown in FIG. 1, a conical portion 36a formed on the piston 36, an inclined surface 26e formed on the inner circumferential surface 26d of the cage 26, and a cone portion 36a A longitudinal switch pin 42 is provided which has one end 42a in contact with the tapered surface 36b and the other end 42b in contact with a slope 26e formed on the holder 26. In addition, as shown in FIG. 4, the inclined surface 26e formed on the cage 26 rotates in the radial direction of the cage 26 as it rotates in the direction opposite to the first rotation direction F1 around the first rotation axis C1. It inclines so that thickness t may become thin. Further, as shown in FIGS. 1 and 4, the switch pin 42 is fitted in a guide hole 12 d formed in the input shaft 12 so as to be movable relative to the input shaft 12 in the radial direction.

  In the actuator 28 configured as described above, as shown in FIG. 1, the piston 36 is moved by the hydraulic drive unit to the side approaching the switch pin 42 in the direction of the first rotation axis C1, that is, moved in the arrow direction F2. The switch pin 42 is moved radially outward by the tapered surface 36b of the conical portion 36a formed on the piston 36, and the slope 26e of the holder 26 is the other end of the switch pin 42 as shown in FIG. When pressed by 42b, the holder 26 is rotated relative to the input shaft 12 in the same direction as the first rotation direction F1, that is, in the arrow direction F3 against the biasing force of the switch spring 32.

  In the two-way clutch device 10 configured as described above, for example, when the operation position of the shift lever is the forward travel position, for example, the D position, the actuator 28 does not operate and the switch spring 32 is attached as shown in FIG. Since the plurality of rollers 24 are respectively held in the second wedge space Sr2 by the force, the rotation in the first rotational direction F1 of the input shaft 12, that is, the forward direction is transmitted to the output member 14. Further, for example, when the operation position of the shift lever is the reverse travel position, for example, the R position, the actuator 26 resists the biasing force of the switch spring 32 by the actuator 28 and rotates relative to the input shaft 12 in the arrow direction F3. Since the plurality of rollers 24 are moved to the first wedge space Sr1 respectively, the rotation of the input shaft 12 in the direction opposite to the first rotation direction F1, ie, the reverse direction, is transmitted to the output member 14. For example, when the operation position of the shift lever is the neutral position (N position), the plurality of rollers 24 are respectively moved between the first wedge space Sr1 and the second wedge space Sr2 by the actuator 28. The rotation of the input shaft 12 can not be transmitted to the output member 14 via the plurality of rollers 24 regardless of the rotation direction. Further, a circle B indicated by a one-dot chain line shown in FIG. 3 indicates a state in which the roller 24 is held in the first wedge space Sr1.

  As described above, according to the two-way clutch device 10 of the present embodiment, the cage 26 is attached between the input shaft 12 and the cage 26 so that the roller 24 is held in the second wedge space Sr2. The second wedge space Sr2 includes a first rotation about the first rotation axis C1 in the input shaft 12 which is frequently used when transmitting the rotation from the input shaft 12 to the output member 14. A wedge space for transmitting the rotation in the direction F1 to the output member 14 through the roller 24, and outputs the rotation in the opposite direction to the first rotation direction F2 less frequently used than the first rotation direction F1 from the input shaft 12 In the case of transmission to the member 14, the actuator 28 moves the holder 26 against the biasing force of the switch spring 32 so that the roller 24 moves to the first wedge space Sr 1. Therefore, when the rotation is transmitted from the input shaft 12 to the output member 14, the rotation of the first rotation direction F1 about the first rotation axis C1 in the frequently used input shaft 12 is transmitted to the output member 14 via the roller 24. Since the roller 24 is held by the switch spring 24 in the second wedge space Sr 2, a cam formed on the input shaft 12 when the rotation is transmitted from the input shaft 12 to the output member 14 while the vehicle is traveling The surface 12 b can be quickly engaged with the inner circumferential surface 14 b of the output shaft 14. Further, since there is no need to provide two types of engagement elements for forward rotation and engagement elements for reverse rotation as in the prior art as the roller 24, the two-way clutch device 10 can be miniaturized in the direction of the first rotation axis C1. .

  Further, according to the two-way clutch device 10 of the present embodiment, the actuator 28 is provided with the first piston 36 fitted in the central hole 12c formed in the input shaft 12 so as to be movable in the direction of the first rotation axis C1. A holder moving mechanism 40 for moving the holder 26 by moving in the direction of the rotation axis C 1 is provided, and the holder moving mechanism 40 includes a conical conical portion 36 a formed on the piston 36, and the holder 26. Of the inner circumferential surface 26d of the second embodiment, and the inclined surface 26b which is inclined such that the thickness t of the cage 26 becomes thinner as it rotates around the first rotation axis C1, and the tapered surface 36b formed on the conical portion 36a. A switch pin 42 having one end 42a abutted and the other end 42b abutted to an inclined surface 26e formed on the retainer 26 so as to be movable relative to the input shaft 12 in the radial direction. When, When the piston 36 is moved toward the switch pin 42 in the direction of the first rotation axis C1 in the cage moving mechanism 40, the switch pin 42 is a tapered surface of the conical portion 36a formed on the piston 36. The inclined surface 26e of the cage 26 is pushed by the other end 42b of the switch pin 42 while the radial direction 36b is moved radially outward by 36b, and the cage 26 resists the biasing force of the switch spring 32 against the input shaft 12 It is relatively rotated around the first rotation axis C1. Therefore, in the holder moving mechanism 40, the holder 26 can be rotated relative to the input shaft 12 around the first rotation axis C1 by moving the piston 36 in the direction of the first rotation axis C1.

  Further, according to the two-way clutch device 10 of the present embodiment, a plurality of cam surfaces 12 b are formed on the outer peripheral surface 12 a of the input shaft 12 in the circumferential direction of the input shaft 12. The rollers 24 are respectively disposed between the surface 12 b and the inner circumferential surface 14 b of the output member 14, and the retainer 26 has a plurality of insertion holes into which the rollers 24 are movably fitted around the first rotation axis C 1. 26a and an engagement element holding member 30 for holding the roller 24 at a position between the first wedge space Sr1 and the second wedge space Sr2, and the engagement element holding member 30 is provided with an engagement element holding member When 30 moves in the first rotation direction F1 around the first rotation axis C1, the roller 24 is moved toward the first wedge space Sr1 on the side of the first rotation direction F1 of the pair of first wedge space Sr1 and second wedge space Sr2. Or When the first leaf spring portion 30a for biasing and the engaging element holding member 30 move in the direction opposite to the first rotation direction F1 around the first rotation axis C1, the roller 24 is moved to the pair of first wedge space Sr1 and second A second plate spring portion 30b biased toward the second wedge space Sr2 in the opposite direction in the wedge space Sr2 is provided. Therefore, when the holder 26 is relatively rotated about the first rotation axis C1 with respect to the input shaft 12 by the actuator 28, the plurality of rollers 24 are respectively made by the first plate spring portion 30a or the second plate spring portion 30b. It is suitably held in one of the pair of the first wedge space Sr1 and the second wedge space Sr2.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is also applicable in other aspects.

  For example, in the actuator 28 of the above embodiment, the piston 36 is driven in the direction of the first rotation axis C1 by the hydraulic pressure by the hydraulic drive, but the piston 36 is not the hydraulic drive but, for example, a pneumatic piston It may be driven in the direction of the first rotation axis C1 by rotational driving of the electromagnet and the electric motor. Further, although the cylindrical roller 24 is used in the two-way clutch device 10 of the above-described embodiment, an engaging element such as sprag may be used instead of the roller 24.

  Further, although the coil-shaped switch spring 32 is used in the above-described embodiment, any shape may be used as long as it biases the cage 26 so that the roller 24 is held in the second wedge space Sr2. Or any resilient member may be used. Further, in the above-described embodiment, the first leaf spring portion 30a shaped like a leaf spring is provided in the engaging element holding member 30, but any means for urging the roller 24 toward the first wedge space Sr1 can be used. A spring of such a shape, ie any elastic member (first elastic portion) may be used. In the embodiment described above, the second leaf spring portion 30b in the form of a leaf spring is provided in the engaging element holding member 30, but any other means for urging the roller 24 toward the second wedge space Sr2 may be used. A spring of such a shape, i.e. any elastic member (second elastic portion) may be used.

  Further, in the above-described embodiment, although two rows of roller groups of the first roller group A1 and the second roller group A2 are provided in the two-way clutch device 10, a single roller group may be used.

  Note that what has been described above is merely an embodiment, and the present invention can be implemented in variously modified and improved forms based on the knowledge of those skilled in the art.

10: Two-way clutch device (two-way clutch device for vehicles)
12: Input shaft (inner member)
12a: outer peripheral surface 12b: cam surface 14: output member (outer member)
14a: Through hole (hole)
14b: inner circumferential surface 24: roller (engagement element)
26: Retainer 28: Actuator 32: Switch spring (elastic member)
C1: First rotation axis (rotation axis)
Cc: center position D: radial distance F1: first rotation direction Sr: accommodation space (space)
Sr1: First wedge space (other wedge space)
Sr2: Second wedge space (one wedge space)

Claims (1)

An outer member rotatably supported about the rotation axis, an inner member rotatably disposed about the rotation axis in a hole formed in a central portion of the outer member, and an outer peripheral surface of the inner member Between the inner surface of the outer member and the outer peripheral surface of the inner member, and the engaging element disposed between the inner peripheral surface of the outer member and the cam surface of the inner member. A holder, which is disposed and holds the position of the engagement element relative to the cam surface of the inner member in the rotational direction about the rotation axis, and relatively rotates the holder with respect to the inner member about the rotation axis An actuator for moving the position of the engaging element relative to the cam surface, and an inner peripheral surface of the outer member and a cam surface of the inner member moving from the center position of the cam surface toward the rotational direction The radial distance between them is short A pair of wedge spaces are formed at both ends of the space between the inner peripheral surface of the outer member and the cam surface of the inner member, and the actuator moves the engaging element to one of the pair of wedge spaces Then, the rotation of one side of the inner member is transmitted to the outside member, and when the engaging element is moved to the other of the pair of wedge spaces by the actuator, the rotation in the opposite direction to the one direction of the inner member is performed. A two-way clutch device for a vehicle transmitting to the outer member, wherein
An elastic member is provided between the inner circumferential member and the retainer for biasing the retainer so that the engaging element is held in one of the pair of wedge spaces. ,
In the one wedge space, when transmitting rotation from the inner member to the outer member, rotation of the first member around the rotation axis in the frequently used inner member is performed through the engaging element in the first rotational direction. It is a wedge space that transmits to
When transmitting rotation from the inner member to the outer member in the direction opposite to the first rotation direction, which is less frequently used as compared with the first rotation direction, the engaging element forms the pair of wedges by the actuator. A two-way clutch device for a vehicle, characterized in that the retainer is moved against the biasing force of the elastic member so as to move to the other wedge space of the space.

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