JP2006132672A - Clutch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch which can reduce load acting on an engagement piece of one of plates in a direction different from the direction of generation of torque. <P>SOLUTION: The clutch 1 includes one plate 2 and the other plate 3 which are so arranged as to relatively rotate at the center of the axis A1, the engagement piece 15 provided in a reception recess portion 7 of one plate 2 and arranged in a pivotable manner around a support shaft 16, an elastic member 23 for generating force to urge the engagement piece 15 toward the other plate 3, and an engagement section 24 formed in the other plate 3 and engaging with a free end of the engagement piece 15 to thereby transmit the torque between one plate 2 and the other plate 3. A retainer plate 4 for retaining the engagement piece 15 and an elastic member 22 are provided so that the center line B1 extending between the support shaft 16 and the free end of the engagement piece 15 and the plane perpendicular to the axis A1 become substantially parallel to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a clutch used for transmitting and blocking power between rotating members, or stopping a rotating member.

  In general, as a clutch used when transmitting and shutting off power or stopping a rotating member, a mesh clutch, a friction clutch, a fluid clutch, and the like are known, and an example of a one-way clutch that is a kind of a mesh clutch is It is described in Patent Document 1. The one-way clutch described in Patent Document 1 has one plate and the other plate. An engagement body is accommodated in an accommodation recess of one plate, and an engagement recess is provided in the other plate. Yes. One plate is provided with an elastic body that rotates and urges the engaging body to the other plate around the locking protrusion of the engaging body.

When the other plate is rotated in a predetermined direction, the distal end portion of the engaging body comes into contact with the other plate and is pushed toward the housing recess. For this reason, the engaging body rotates around the locking projection against the reaction force of the elastic body, the engaging body enters the accommodating recess, and the tip of the engaging body is detached from the engaging recess. Thereby, rotation (idling) of the other plate is permitted. On the other hand, when the other plate is rotated in the direction opposite to the predetermined direction, the engaging body rotates around the engaging projection by the reaction force of the elastic body when the engaging body faces the engaging recess. The tip portion protrudes from the receiving recess and engages with the engaging recess, and the other plate is prevented from rotating.
JP 2000-97256 A

  In the one-way clutch described in Patent Document 1, when the engaging body is engaged with the engaging recess, the engaging body is inclined. Specifically, the center line connecting the engagement protrusion and the tip of the engaging body is inclined with respect to the line segment indicating the torque generation direction in the other plate, and the torque generation direction and the center line are at a predetermined angle. Cross at. For this reason, a moment is generated to rotate the engagement body around the engagement protrusion, and a load in a direction different from the torque generation direction, that is, a direction crossing the torque generation direction is applied to one plate. There was a risk of acting.

  The present invention has been made against the background of the above circumstances, and an object thereof is to provide a clutch capable of reducing a load acting on one plate in a direction different from the direction in which torque is generated. To do.

  In order to achieve the above object, the invention of claim 1 is provided in one plate and the other plate, which are disposed so as to be relatively rotatable around an axis, and a support recess provided in the one plate. An engagement piece configured to be rotatable about the portion, an elastic body that generates a force in a direction to bring the engagement piece toward the other plate, the other plate, and the engagement piece. In a clutch having an engagement portion that enables torque transmission between the one plate and the other plate by engaging the free end of the combined piece, the support portion and the free end of the engagement piece are A holding member that holds the engagement piece is provided so that a center line to be connected and a plane orthogonal to the axis line are substantially parallel to each other.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the one plate and the other plate are brought closer along the axial direction, and the engaging portion is a free end of the engaging piece. And an engaging mechanism for allowing the engaging piece to rotate in a direction to enter the inner side of the receiving recess when the axial force is applied to the engaging piece. When the axial force is applied from the engagement portion to the engagement piece in contact with the free end of the engagement piece, the engagement piece is prevented from entering the interior of the housing recess. The holding member further includes a regulating mechanism.

  In addition to the configuration of claim 1 or 2, the invention of claim 3 includes a planetary gear mechanism including a first element, a second element, and a third element that are attached so as to be differentially rotatable about the axis. As a connection object in the case of connecting / releasing to the first element by operating the first element in the axial direction by operating the first element in the axial direction with a peripheral member arranged relative to the first element around the axis A plurality of engagement control mechanisms capable of selectively changing either one of the second element or the third element, or any of the peripheral members, and a function as the first element; A common member having a function as a component of the plurality of engagement control mechanisms is provided, and the one plate is either the second element or the third element, or the peripheral member. Noisy Or together constitute a Re, the other plate, and is characterized in that it constitutes the common member.

  According to a fourth aspect of the present invention, in addition to the structure of any one of the first to third aspects, when the engagement piece rotates around the support portion, a moving range of the free end of the engagement piece is determined. The holding member further includes a window portion, and the window portion has a restriction mechanism that restricts the engagement piece from entering toward the back of the housing recess, and the engagement portion A second elastic member is provided for applying a force in a direction in which the free end of the piece is separated from the restriction mechanism to the engagement piece along the center line.

  According to a fifth aspect of the present invention, in addition to the structure of any one of the second to fourth aspects, the engaging portion contacts a free end of the engaging piece, and the axis line extends from the engaging portion to the engaging piece. An inclined surface that generates a component force in the direction of the center line when a directional force is applied is provided at the free end of the engagement piece.

  According to a sixth aspect of the present invention, in addition to the structure of any one of the first to fifth aspects, the first and second plates are engaged in parallel with the engagement between the engagement piece and the engagement portion. The one plate and the other plate are provided with a concave portion and a convex portion that enable torque transmission with the other plate.

  According to a seventh aspect of the invention, in addition to the structure of any one of the first to sixth aspects, an introduction passage for introducing the free end of the engagement piece into the window portion, and a free end of the engagement piece is the introduction passage. When the engaging piece is held so that the center line of the engaging piece and the plane are substantially parallel to each other, the free end is removed from the introduction passage. The retaining member is provided with a retaining mechanism that prevents the retaining member from slipping out.

  According to an eighth aspect of the invention, in addition to the structure of any one of the first to seventh aspects, a plurality of the engagement pieces are provided, and the engagement portions are sandwiched by the plurality of engagement pieces in the planar direction. It is characterized by having a structure.

  According to the first aspect of the present invention, the engagement piece and the engagement portion are engaged, and torque can be transmitted between one plate and the other plate. In addition, since force is transmitted to the engagement piece in a direction parallel to the plane perpendicular to the axis, it is possible to reduce the load acting in a direction different from the direction of torque generation in the support portion of one plate. is there.

  According to the invention of claim 2, in addition to obtaining the same effect as that of the invention of claim 1, one plate and the other plate are brought closer along the axial direction, and the engaging portion is an engaging piece. When an axial force is applied to the engaging piece in contact with the free end of the plate, the engaging piece is allowed to rotate in a direction to enter the interior of the receiving recess, so that one plate and the other The operation of bringing the plate closer along the axial direction is performed smoothly. In addition, when the engaging portion comes into contact with the free end of the engaging piece and a force in the planar direction is applied from the engaging portion to the engaging piece, the engaging piece is restricted from entering the interior of the housing recess. Thus, the engagement between the engagement portion and the engagement piece is promoted.

  According to the invention of claim 3, in addition to obtaining the same effect as that of the invention of claim 1 or 2, the common member is moved in the axial direction so that the first element is the second element or the third element. Connected to either one of the elements or to a peripheral member. Therefore, the component of the engagement control mechanism and the first element of the planetary gear mechanism are shared by one member (common member), whereby the clutch can be reduced in size.

  According to the invention of claim 4, in addition to obtaining the same effect as that of any one of the inventions of claims 1 to 3, when the engagement piece rotates around the support portion, the second elastic material is used. Since force is applied to the joining piece, it is possible to avoid the free end of the engaging piece from coming into contact with the regulating edge portion, and the engaging piece can be smoothly rotated.

  According to the fifth aspect of the invention, in addition to obtaining the same effect as that of any of the second to fourth aspects of the invention, the engaging portion and the free end of the engaging piece come into contact with each other to engage the engaging portion. When a force in the center line direction is applied to the combined piece, the engaging piece moves in parallel with the plane, so that it is promoted that the engaging piece enters the interior of the housing recess. Therefore, the engagement between the engagement piece and the engagement portion is performed smoothly.

  According to the invention of claim 6, in addition to obtaining the same effect as the invention of any one of claims 1 to 5, in addition to the engagement between the engagement piece and the engagement portion, the recess and the projection are provided. Engagement enables torque transmission between one plate and the other plate. Therefore, the force applied to the engagement piece during torque transmission is reduced, and the engagement piece can be downsized. Further, since one plate and the other plate are directly engaged with each other, the rigidity of the engaging portion is high and the durability is improved.

  According to the invention of claim 7, in addition to obtaining the same effect as the invention of any one of claims 1 to 6, when the engagement piece and the holding member are assembled on one plate, the engagement piece is free. The end can be inserted into the window portion via the introduction passage, and the assembling property is improved. In addition, it is possible to prevent the free end from coming out of the introduction passage after the assembly is completed.

  According to the invention of claim 8, in addition to obtaining the same effect as the invention of any one of claims 1 to 7, a circumferential gap is formed between the engaging portion and the plurality of locking pieces. Can be prevented. Therefore, even when the direction of the torque of the other plate is reversed, it is possible to prevent the generation of noise and to avoid the impact caused by the collision between the engaging portion and the locking portion due to the reversal of torque.

  The clutch of this invention can be arrange | positioned in the power transmission path | route from a driving force source of a vehicle to a wheel, for example. Embodiments of the clutch according to the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a partial cross-sectional view showing a first embodiment of the clutch 1 of the present invention. The first embodiment corresponds to the first, second, and fourth aspects of the invention. The clutch 1 has one plate 2 and the other plate 3, and the one plate 2 and the other plate 3 are configured to be relatively rotatable about an axis A1. One plate 2 and the other plate 3 and holding plate 4 are both made of a metal material. As shown in FIG. 2, one plate 2 and the other plate 3 are both formed in an annular shape, and a holding plate 4 is fixed to the inner periphery and the outer periphery of one plate 2. The end surface 5 of one plate 2 and the end surface 6 of the other plate 3 are formed to face each other, and the end surfaces 5 and 6 both form a plane orthogonal to the axis A1.

  One plate 2 is formed with a housing recess 7 that opens to the end surface 5. A plurality of the accommodating recesses 7 are formed at predetermined intervals along the circumferential direction of the one plate 2. The housing recess 7 has inclined surfaces 8 and 9, flat surfaces 10 and 11, wall surfaces 12 and 13, and a bottom surface 14. The inclined surface 8 is formed continuously with the end surface 5 and is inclined in a circumferential direction away from the end surface 6 of the other plate 3. Further, the flat surface 7 is continuous with the end of the inclined surface 8 in the circumferential direction. The plane 7 is configured in parallel with the end surface 5. A wall surface 12 is continuous with the plane 7. The wall surface 12 is extended in the axial direction. A bottom surface 14 is continuous with the back end of the housing recess 7 on the wall surface 12. The bottom surface 14 is configured in parallel with the end surface 5. The inclined surface 9 is continuous with the bottom surface 14. The inclined surface 9 is inclined in a direction approaching the end surface 5 as it moves away from the bottom surface 14 in the circumferential direction. A flat surface 11 is continuous at the end of the inclined surface 9 opposite to the bottom surface 14. The plane 11 is configured in parallel with the end face 5. A wall surface 13 is connected to an end of the flat surface 11 opposite to the inclined surface 9. The wall surface 13 is configured in parallel with the axis A1.

  Engagement pieces 15 are provided in the respective housing recesses 7 configured as described above. The engagement piece 15 is made of a metal material. The shape of the engagement piece 15 in the plane orthogonal to the axis A1 is formed in a substantially square shape as shown in FIG. Support shafts 16 are formed at two corners of the engagement piece 15, specifically, at two corners arranged in the radial direction of the one plate 2. In addition, projections 21 are formed at the other two corners of the engagement piece 15, respectively. That is, the protrusion 21 is formed on the free end side of the engagement piece 15. In the plane parallel to the axis A1, the protrusion 21 is formed in a square or a rectangle.

  Each support shaft 16 protrudes in the radial direction of one plate 2. On the other hand, a holding hole 17 is formed in each of the holding plates 4, and a support shaft 16 </ b> A located at substantially the same phase in the circumferential direction is disposed in the holding hole 17. In this way, the engagement piece 15 is configured to be rotatable about the support shaft 16 (as a fulcrum) in a plane parallel to the axis A1. Further, a distal end surface 15B is formed at the free end of the engagement piece 15. The front end surface 15B extends in the radial direction of the one plate 2 and is configured substantially parallel to the axis A1.

  Further, each holding plate 4 is provided with a window portion 18, and the projection 21 is disposed on the window portion 18. When the locking piece 15 rotates about the support shaft 16, the protrusion 21 can move in the window portion 18. The window 18 includes an edge 19 parallel to the axis A1, a regulation edge 20 formed in a direction intersecting the axis A1, and an edge 25 continuous to the edge 19. The regulation edge 20 is inclined in a direction away from the edge 19 as it approaches the end surface 6. Furthermore, the edge 25 is formed at a position closest to the edge 26 located in the region of the holding plate 4 that protrudes from the end face 5.

  An elastic body 22 is disposed in the housing recess 7. The elastic body 22 is constituted by a compression spring or the like. One end of the elastic body 22 is connected to the wall surface 13, and the other end of the elastic body 22 is connected to the locking piece 15. More specifically, the elastic body 22 is the locking piece 15 and is connected to a side connecting the support shafts 16. A force is applied in a direction parallel to the end surface 5 from the elastic body 22 toward the locking piece 15. That is, a force that pushes the locking piece 15 rightward in FIG. 1 is generated by the elastic force of the elastic body 22, and the protrusion 21 is in contact with the edge 19. Further, an elastic body 23 is provided in the housing recess 7, and a force is applied from the elastic body 23 to rotate the locking piece 15 counterclockwise in FIG. 25 is in contact.

  As described above, force is applied to the locking piece 15 from the elastic bodies 22 and 23 and pressed against the inner surface of the window portion 18, and the locking piece 15 is positioned and held with respect to the holding plate 4. Thus, in the state in which the protrusion 21 of the locking piece 15 is positioned in contact with the edge portions 19 and 25, the rotation center of the support shaft 16 and the center of the free end of the locking piece 15 in the locking piece 15. A center line B1 connecting (center in the thickness direction) is substantially parallel to the end face 5. In this embodiment, the side surface 15 </ b> A of the locking piece 15 is located substantially on the same plane as the end surface 5.

  The other plate 3 is formed with an engaging portion 24 that protrudes from the end surface 6 toward the end surface 5. A plurality of the engaging portions 24 are formed at predetermined intervals in the circumferential direction around the axis A1. A contact surface 24B that is continuous with the end surface 6 is formed in the engaging portion 24, and an edge 24A that is continuous with the contact surface 24B is formed. The radial dimension of the other plate 3 is shorter than the radial distance between the holding plates 4 as shown in FIG.

  Note that when the one plate 2 and the other plate 3 are relatively moved in the direction along the axis A1, either a configuration using the power of an actuator (not shown) or a configuration using an artificial operation force may be adopted. Good. In this case, it is not necessary to move one plate 2 and the other plate 3 together, and only one plate may be moved. The clutch 1 configured as described above can be disposed, for example, in a power transmission path between a vehicle driving force source and wheels.

  Next, the engagement / release operation of the clutch 1 will be described. As shown in FIG. 1, when the projection 24 of the other plate 3 is located outside the housing recess 7 and the projection 24 and the distal end surface 15B of the locking piece 15 are not in contact with each other, the clutch 1 Is in a released state. Therefore, torque cannot be transmitted between one plate 2 and the other plate 3.

  On the other hand, when the other plate 3 moves downward in FIG. 1, if the engaging portion 24 and the accommodating recess 7 are positioned at different phases on the circumference around the axis A <b> 1, The part 24 contacts the end surface 5. Also in this case, the engaging portion 24 and the locking piece 15 are not in contact with each other, and the clutch 1 is released. Next, when the one plate 2 and the other plate 3 rotate relative to each other, for example, even when the other plate 3 moves rightward with respect to the one plate 2 in FIG. Is not engaged, and the clutch 1 is maintained in the released state.

  Next, the engaging operation of the clutch 1 will be described. As shown in FIG. 1, the engaging portion 24, the inclined surface 8 and the flat surface 10 of the accommodating recess 7 are positioned in the same phase on the circumference centered on the axis A1, and the force F1 is applied to the other plate 3. When approaching toward one plate 2, the engaging portion 24 enters the housing recess 7, and the engaging portion 24 contacts the inclined surface 8 and the flat surface 10. In FIG. 1, when the other plate 3 rotates so as to move leftward with respect to the one plate 2, the contact surface 24 </ b> B of the engaging portion 24 contacts the tip surface 15 </ b> B of the locking portion 15. Then, the clutch 1 is engaged. That is, torque transmission can be performed between the other plate 3 and one plate 2.

  In this embodiment, when the protrusion 21 of the locking piece 15 is positioned in contact with the edges 19 and 25, the center of the locking piece 15 connecting the support shaft 16 and the free end of the locking piece 15. The line B1 is substantially parallel to the end face 5. When the engaging portion 24 comes into contact with the distal end surface 15B of the positioned locking piece 15 and a force is transmitted from the other plate 3 to the engaging piece 15, the direction of the force is along the center line B1. It will be. For this reason, it can suppress that the moment which the locking piece 15 rotates centering on the support shaft 16 generate | occur | produces. In other words, only a compressive load acts on the locking piece 15 in the center line direction, and almost no bending load is generated. Therefore, at the time of torque transmission, “a component force in the direction of moving the other plate 3 away from the one plate 2 by the reaction force of the locking piece 15 is generated in the axial direction” can be suppressed. That is, it is not necessary to increase the force F1 of the actuator that brings the other plate 3 closer to the one plate 2. In addition, since it is possible to suppress the occurrence of such an axial load, it is not necessary to increase the rigidity, strength, or durability of the support portion of the locking piece 15, and the locking piece 15 and supporting parts are prevented from being enlarged. it can.

  On the other hand, when the edge 24A of the engaging portion 24 and the distal end surface 15B of the locking piece 15 are located in substantially the same phase on the circumference centered on the axis A1, the other plate 3 When the force F1 is applied to the elastic member 23, the elastic body 23 is compressed by the force applied from the engaging portion 24, and the engaging piece 15 rotates about the support shaft 16 in the clockwise direction in FIG. For this reason, it is not hindered that the engaging portion 24 enters the housing recess 7. In this case, since the locking piece 15 is pressed toward the edge 19 by the elastic body 22, it is possible to prevent the protrusion 21 from contacting the inclined surface 20.

  Further, when the force in the axis A1 direction applied to the engagement piece 15 is small due to the contact between the engagement piece 15 and the engagement portion 24, the engagement piece 15 does not rotate in the clockwise direction, and the elastic body 22 is rotated. Is compressed, and the locking piece 15 moves to the left in FIG. 1 along the center line B1. In some cases, the free end of the locking piece 15 is pushed along the inclined surface 20 toward the outside of the housing recess 7. As a result, the engaging portion 24 enters the back of the housing recess 7, and the front end surface 15 </ b> B of the engaging piece 15 is pressed against the engaging portion 24 by the elastic force of the elastic body 22, and the clutch 1 is engaged. Complete.

  In Example 1, when the force F1 is applied from the state in which the engaging portion 24 is in contact with the end face 5, and the other plate 3 moves to the left in FIG. The portion 24 enters the housing recess 7 along the inclined surface 8, and then the contact surface 24 </ b> B of the engaging portion 24 contacts the tip surface 15 </ b> B of the locking piece 15 and the clutch 1 is engaged. As described above, the clutch 1 described in the first embodiment is engaged when the relative rotational direction of the one plate 2 and the other plate 3 is the predetermined direction, and is released when the relative direction is the opposite direction. It is a one way clutch of composition.

  Here, the correspondence between the configuration described in the first embodiment and the configuration of the present invention will be described. The elastic body 23 corresponds to the elastic body of the present invention, and the support shaft 16 corresponds to the support portion of the present invention. The holding plate 4 and the elastic body 22 correspond to the holding member of the present invention, the restricting edge portion 20 corresponds to the restricting mechanism of the present invention, and the window portion 18 and the elastic body 22 correspond to the permissible mechanism in the present invention. The elastic body 22 corresponds to the second elastic body of the present invention.

  Next, a second embodiment of the clutch 1 will be described with reference to FIG. The second embodiment is based on the configuration of the first embodiment, and corresponds to the fifth aspect. As shown in FIG. 3, the inclined surface 15C which connects the front end surface 15B and the side surface 15A of the locking piece 15 is formed. Other configurations of the second embodiment are the same as those of the first embodiment. In the second embodiment, when the edge 24A of the engaging portion 24 and the distal end surface 15B of the locking piece 15 are located in substantially the same phase on the circumference centered on the axis A1, the other side When the force F1 is applied to the plate 3 and the edge 24A of the engaging portion 24 contacts the inclined surface 15C, the locking piece 15 is moved along the center line B1 according to the axial force applied to the inclined surface 15C. In FIG. 3, a component force that pushes to the left side is generated, and the edge 24A slides along the inclined surface 15C. Therefore, the contact surface 24B of the engagement portion 24 is easy to contact the tip surface 15B of the locking piece 15. Thus, engagement of the clutch 1 is promoted. Here, the correspondence between the configuration of the second embodiment and the configuration of the second embodiment will be described. The inclined surface 15C corresponds to the inclined surface of the present invention.

  Next, a third embodiment of the clutch 1 will be described with reference to FIG. The third embodiment is based on the configuration of the first embodiment, and corresponds to claims 1, 2, and 8. In the third embodiment, a projection 27 corresponding to the engagement portion 24 is provided on one plate 2, and in the circumferential direction centering on the axis A <b> 1, the housing recess 7, The configuration of the piece 15, the elastic bodies 22 and 23, the window portion 18, etc. is provided symmetrically. Also in the third embodiment, when the projection 24 of the other plate 3 is located outside the housing recess 7 and the projection 24 and the tip end surface 15B of the locking piece 15 are not in contact with each other, the clutch 1 Is in a released state. Therefore, torque cannot be transmitted between one plate 2 and the other plate 3.

  On the other hand, when the phase of the protrusion 27 and the engaging portion 24 coincide with each other in the circumferential direction around the axis A1, and the other plate 3 is moved downward in FIG. The part 24 enters between the two locking pieces 15 and the clutch 1 is engaged. Further, in the circumferential direction centering on the axis A1, the phase of the protrusion 27 and the engaging portion 24 are inconsistent, and the other plate 3 moves forward and backward from the state in which the engaging portion 24 is in contact with the end face 5. The clutch 1 is also engaged when it is rotated in either direction and a force F1 is applied to one of the plates 2 and the engaging portion 24 enters between the two locking pieces 15.

  In the third embodiment, when the clutch 1 is engaged, the locking pieces 15 come into contact with both sides of the engaging portion 24 in the circumferential direction centered on the axis A1, and the elastic body 22 The locking piece 15 is pressed against the engaging portion 24. Therefore, the torque of the other plate 3 is transmitted to one plate 2 even when the other plate 3 rotates in either the forward or reverse direction. In the third embodiment, the engaging portion 24 is sandwiched between the two locking pieces 15, and a circumferential clearance (corresponding to a gear backlash) is formed between the engaging portion 24 and the locking piece 15. Is not formed. Therefore, even when the direction of the torque of the other plate 3 is reversed, it is possible to prevent the generation of noise and to avoid the impact caused by the collision between the engaging portion 24 and the locking portion 15 due to the reversal of the torque.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. The fourth embodiment is based on the configuration of the third embodiment, and the fourth embodiment is an embodiment corresponding to the inventions of claims 6 and 8. As shown in FIG. 5, a concave portion 28 is formed on the protrusion 27 of one plate 2, and a convex portion 29 is formed on the engaging portion 24 of the other plate 3. Then, in parallel with the operation in which the engaging portion 24 enters between the locking pieces 15, the convex portion 29 enters the concave portion 28. That is, one plate 2 itself and the other plate 3 itself are directly engaged.

  Then, between the other plate 3 and the one plate 2, torque can be transmitted from the engaging portion between the convex portion 29 and the concave portion 28. Although not particularly illustrated, a configuration in which a concave portion is formed in the engaging portion 24, a convex portion is formed in the protrusion 27, and the convex portion is engaged with the concave portion may be employed. In the fourth embodiment, the same effect as in the third embodiment can be obtained. In addition, the force applied to the engagement piece 15 during torque transmission is reduced, and the engagement piece 15 can be downsized. Further, since one plate 2 and the other plate 3 are directly engaged with each other, the rigidity of the engaging portion is high and the durability is improved.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. The fifth embodiment is based on the configuration of the first embodiment or the configuration of the third embodiment, and the fifth embodiment is an embodiment corresponding to the invention of claim 7. In FIG. 6, an example based on the first embodiment is shown for convenience. In the fifth embodiment, an introduction passage 30 leading from the edge portion 26 of the holding plate 4 to the window portion 18 is formed. The holding plate 4 is provided with a retaining mechanism (protruding portion) 31 facing the edge portion 19. Further, the holding plate 4 is formed with a passage 32 that leads from the edge portion 26 to the holding hole 17. In the axial direction, the gap h1 between the flat surface 10 and the tip of the retaining mechanism 31 is configured to be smaller than the thickness of the protrusion 21 in the axial direction.

  In the fifth embodiment, in the assembly process of the clutch 1, the support shaft 16 of the engagement piece 15 is inserted into the holding hole 17 via the passage 32, and the protrusion 21 of the engagement piece 15 is inserted into the introduction passage 30. It can be inserted into the window 18 through Therefore, the assembly workability of the engagement piece 15 is improved. Further, after the engagement piece 15 is assembled, the engagement piece 15 is pressed by the elastic body 22, and the projection 21 comes into contact with the retaining mechanism 31, so that the projection 21 can be prevented from coming out of the introduction passage 30. Although not particularly illustrated, a configuration in which the support shaft 16 and the protrusion 21 are sequentially passed through the introduction passage 30 without providing the passage 32 may be employed. Further, although not shown, it is possible to adopt a configuration in which the window 18 and the holding hole 17 are shared by one hole.

  Next, Embodiment 6 of the present invention will be described with reference to FIG. The sixth embodiment is based on the configuration of the first embodiment or the configuration of the third embodiment, and the sixth embodiment is an embodiment corresponding to the first and second aspects of the invention. In FIG. 7, for the sake of convenience, an example based on the first embodiment is shown. In the sixth embodiment, a stopper surface 33 that is continuous with the wall surface 12 is formed in the accommodating recess 7. The stopper surface 33 is configured in parallel with the plane 10. In addition, an elastic body holding portion 34 is formed between the flat surface 11 and the stopper surface 33. The elastic body holding part 34 is formed in a hollow shape, and a bulging part 35 is formed between the elastic body holding part 34 and the flat surface 11. The elastic body 23 is held by the elastic body holding portion 34. Further, the contraction thickness (height) of the elastic body 23 when the locking piece 15 comes into contact with the stopper surface 33 rather than the thickness (height) of the elastic body 23 when the elastic body 23 is in the maximum contracted state. Is configured to be larger.

  In the sixth embodiment, when the locking piece 15 rotates around the support shaft 16 in the clockwise direction in FIG. 7, the protrusion 21 stops on the stopper surface 33 and the locking piece 15 stops. Further, since the elastic body 23 is held by the hollow elastic body holding portion 34, it is possible to prevent the elastic body 23 from getting over the bulging portion 35, and to stably secure the load applied from the elastic body 23 to the locking piece 15. be able to. Therefore, fluctuations in the force F1 applied to the other plate 3 can be suppressed. Furthermore, the contraction thickness (height) of the elastic body 23 when the locking piece 15 comes into contact with the stopper surface 33 rather than the thickness (height) of the elastic body 23 when the elastic body 23 is in the maximum contracted state. Therefore, the elastic body 23 can be prevented from being in the maximum contracted state, and the durability of the elastic body 23 is improved.

  Next, a configuration example when the clutch 1 described in the first to sixth embodiments is arranged in a part of the power transmission device of the vehicle will be described with reference to FIG. The seventh embodiment corresponds to the third aspect. In FIG. 8, an input shaft 40 and an output shaft 41 are provided to be rotatable about an axis A1. The input shaft 40 is connected to a driving force source 42, and the output shaft 41 is connected to a continuously variable transmission 43. As the driving force source 42, an engine, a motor / generator, or the like can be used. As the continuously variable transmission 43, a belt type continuously variable transmission or a toroidal type continuously variable transmission can be used.

  A forward / reverse switching device 44 is provided in the power transmission path between the input shaft 40 and the output shaft 41. The forward / reverse switching device 44 includes a double pinion planetary gear mechanism 44A, a forward clutch 51, and a reverse brake 52. The planetary gear mechanism 44A includes a sun gear 45 that rotates integrally with the output shaft 41, a ring gear 46 that is arranged coaxially with the sun gear 45, a pinion gear 47 that meshes with the sun gear 45, and a pinion gear that meshes with the ring gear 46 and the pinion gear 47. 48 and a carrier 49 that holds the pinion gears 47 and 48 so as to be rotatable and integrally revolved. The carrier 49 and the input shaft 40 are connected to rotate integrally. The ring gear 46 is formed on the other plate 3 described above, and the other plate 3 is configured to be movable in the axial direction, and the end plate 6 on both sides in the axial direction of the other plate 3 is configured as described above. Engaging portions 24 are provided respectively.

  Further, the forward clutch 51 has the above-described one plate 2, and the one plate 2 is connected so as to rotate integrally with the input shaft 40 and the carrier 49. Further, the reverse brake 52 has one plate 2 fixed to the casing 53. As described above, one plate 2 constituting a part of the forward clutch 51 and one plate 2 constituting a part of the reverse brake 52 are arranged so that the end faces 5 face each other, The other plate 3 is disposed between the one plate 2.

  The operation of the forward / reverse switching device 44 is determined by the selected shift position. When the forward position is selected, the other plate 3 moves rightward in FIG. 8, the forward clutch 51 is engaged, and the reverse brake 52 is released. When the forward clutch 51 is engaged and the reverse brake 52 is released, when the torque of the driving force source 42 is transmitted to the input shaft 40, the entire planetary gear mechanism 44A rotates integrally. That is, the input shaft 40 and the output shaft 41 rotate in the same direction, and torque is transmitted to the continuously variable transmission 43.

  On the other hand, when the reverse position is selected, the other plate 3 moves leftward in FIG. 8, the reverse brake 52 is engaged, and the forward clutch 51 is released. When the forward clutch 51 is released, the reverse brake 52 is engaged, and the ring gear 46 is stopped, when the torque of the driving force source 42 is transmitted to the input shaft 40, the torque of the driving force source 42 is transferred to the carrier 49. While being input, the ring gear 46 becomes a reaction force element, and the output shaft 41 rotates in the opposite direction to the input shaft 40. When the parking position or the neutral position is selected, both the forward clutch 51 and the reverse brake 52 are released, and power transmission between the input shaft 40 and the output shaft 41 becomes impossible.

  In the seventh embodiment, the other plate 3 serves as a common member having both the function as the ring gear 46, the function as the component of the forward clutch 51, and the function as the component of the reverse brake 52. ing. Therefore, an increase in the number of parts can be suppressed, and the entire forward / reverse switching device 44 can be reduced in size.

  Here, the correspondence between the configuration described in the seventh embodiment and the configuration of the present invention will be described. The ring gear 46 corresponds to the first element of the present invention, and the carrier 49 corresponds to the second element of the present invention. The sun gear 45 corresponds to the third element of the present invention, the one plate 2 constituting the reverse brake 52 corresponds to the peripheral member of the present invention, and the forward clutch 51 and the reverse brake 52 It corresponds to a plurality of engagement control mechanisms of the invention and a clutch of the invention. The clutch according to the present invention is engaged when the power of the driving side rotating member is transmitted to the driven side rotating member to rotate the driven side rotating member, and when the rotating member is stopped. And brakes to be included. Furthermore, a planetary gear mechanism of a single pinion type can be used as the planetary gear mechanism. Furthermore, it is possible to employ a configuration in which the ring gear and the sun gear are connected by a forward clutch. In each embodiment, the plane perpendicular to the axis is not particularly shown, but the end face 5 or the end face 6 may be used as this plane. Further, in the present invention, “substantially parallel” includes “completely parallel”, “substantially parallel”, and the like. That is, “a center plane connecting the support portion and the free end of the engagement piece intersects with a plane orthogonal to the axis, and an acute angle side intersection angle is equal to or less than a predetermined angle.

1 is a partial cross-sectional view of a clutch according to a first embodiment of the present invention in a plane parallel to an axis. 1 is a partial cross-sectional view of a clutch according to a first embodiment of the present invention, taken along a plane perpendicular to the axis. Example 2 of the clutch of this invention is shown and it is a fragmentary sectional view. Example 3 of the clutch of this invention is shown and it is a fragmentary sectional view in the plane parallel to the axis. Example 4 of the clutch of this invention is shown and it is a fragmentary sectional view in the plane parallel to an axis. Example 5 of the clutch of this invention is shown, and is a partial sectional view in a plane parallel to the axis. Example 6 of the clutch of this invention is shown and it is a fragmentary sectional view in the plane parallel to the axis. 7 is a skeleton diagram illustrating a seventh embodiment of the clutch according to the present invention and illustrating a case where the clutch is used as part of a power transmission device. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Clutch, 2 ... One plate, 3 ... Other plate, 4 ... Holding plate, 7 ... Housing recessed part, 16 ... Supporting shaft, 15 ... Engagement piece, 15C ... Inclined surface, 18 ... Window part, 20 ... Restriction Edge part 22, 23 ... Elastic body, 24 ... Engagement part, 28 ... Concave part, 29 ... Convex part, 30 ... Introduction passage, 31 ... Retaining mechanism, 44A ... Planetary gear mechanism, 45 ... Sun gear, 46 ... Ring gear, 51 ... Clutch for forward movement, 52 ... Brake for backward movement, 49 ... Carrier, A1 ... Axis line, B1 ... Center line.

Claims (8)

One plate and the other plate arranged so as to be rotatable relative to each other about the axis, an engagement piece provided in the receiving recess of the one plate and configured to be rotatable around the support portion, An elastic body that generates a force in a direction to bring the engagement piece toward the other plate and the other plate, and the free end of the engagement piece is engaged with each other, thereby the one plate. And a clutch having an engaging portion that enables torque transmission between the second plate and the other plate,
A holding member for holding the engagement piece is provided so that a center line connecting the support portion and the free end of the engagement piece is substantially parallel to a plane orthogonal to the axis. And clutch.   The one plate and the other plate are brought close to each other along the axial direction, and the engaging portion comes into contact with a free end of the engaging piece so that a force in the axial direction is applied to the engaging piece. An engagement mechanism that allows the engagement piece to rotate in a direction to enter the interior of the housing recess, and the engagement portion comes into contact with a free end of the engagement piece, and the engagement portion The holding member further includes a restricting mechanism for restricting the engagement piece from entering the interior of the housing recess when a force in the axial direction is applied to the engagement piece. The clutch according to claim 1. A planetary gear mechanism including a first element, a second element, and a third element that are attached so as to be differentially rotatable about the axis, and a periphery that is disposed so as to be rotatable relative to the first element about the axis When the member and the first element are moved in the axial direction to connect / release the first element, either the second element or the third element, or any of the peripheral members A plurality of engagement control mechanisms capable of selectively changing the function, and having both a function as the first element and a function as a component of the plurality of engagement control mechanisms. A common member is provided,
The one plate constitutes either the second element or the third element, or the peripheral member, and the other plate constitutes the common member. The clutch according to claim 1 or 2.   When the engaging piece rotates about the support part, the holding member further includes a window part that determines a moving range of the free end of the engaging piece. It has a restricting mechanism that restricts the engaging piece from entering into the inner side of the receiving recess, and the force in the direction in which the free end of the engaging piece is separated from the restricting mechanism is applied along the center line. The clutch according to any one of claims 1 to 3, wherein a second elastic member to be added to the engagement piece is provided.   An inclined surface that generates a component force in the center line direction when the engagement part contacts the free end of the engagement piece and a force in the axial direction is applied from the engagement part to the engagement piece. The clutch according to any one of claims 2 to 4, wherein the clutch is provided at a free end of the engagement piece.   A concave portion and a convex portion that are engaged in parallel with the engagement between the engagement piece and the engagement portion, and that enable torque transmission between the one plate and the other plate, The clutch according to any one of claims 1 to 5, wherein the clutch is provided on the plate and the other plate.   An introduction passage for introducing the free end of the engagement piece into the window portion, and a free end of the engagement piece is disposed in the window portion via the introduction passage, and the center line and the plane of the engagement piece And a retaining mechanism for preventing the free end from slipping out of the introduction passage when the engaging piece is retained so that the retaining members are substantially parallel to each other. The clutch according to any one of claims 1 to 6, characterized in that:   A plurality of the engagement pieces are provided, and the engagement portion is sandwiched by the plurality of engagement pieces in the planar direction. The clutch described.

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