JP2015165150A - Rotation transmission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotation transmission device including an electromagnetic clutch for controlling the engagement/disengagement of a two-way clutch while reducing noises to occur during the engagement of the two-way clutch.SOLUTION: A retainer 16 of a two-way clutch 10 of which the engagement/disengagement is controlled by an electromagnetic clutch 50 and which transmits/interrupts rotation between an input shaft 1 and an output shaft 2 is formed with a control retainer 16A to be moved in the axial direction by the electromagnetic clutch 50 and a rotation retainer 16B. The control retainer 16A and the rotation retainer 16B are paired with each other so that column parts 22, 26 formed on the outer peripheries of flanges 21, 25 are alternately arrayed between an outer ring 11 and an inner ring 13 in the peripheral direction. In each of pockets 27 formed between the adjacent column parts 22, 26, a pair of rollers 15 and an elastic member 20 are incorporated. On the faces of the column parts 22, 26 of the control retainer 16A and the rotation retainer 16B, opposed to the rollers 15, soft layers 35 are provided, respectively.

Description

  The present invention relates to a rotation transmission device used for switching rotation transmission and switching.

  As a rotation transmission device for transmitting and interrupting rotation from an input shaft to an output shaft, a two-way clutch for coupling and releasing the input shaft and the output shaft is provided, and the engagement and release of the two-way clutch are electromagnetic clutches. What is controlled by this is conventionally known.

  In the rotation transmission device described in Patent Document 1, control is maintained between an outer ring provided at the shaft end portion of the output shaft and an inner ring provided at the shaft end portion of the input shaft and incorporated inside the outer ring. The cage and the rotary cage are assembled so that the pillar portions formed in each cage are alternately arranged in the circumferential direction, and a pair of opposed rollers are incorporated in a pocket formed between adjacent pillar portions, and the pair The roller is urged in the direction of separation by an elastic member incorporated between the opposed portions, and is engaged with a cylindrical surface formed on the inner periphery of the outer ring and a cam surface formed on the outer periphery of the inner ring. The roller is put on standby, and one roller is engaged with the cylindrical surface and the cam surface by rotating the inner ring in one direction so that the rotation of the inner ring is transmitted to the outer ring.

  Also, an electromagnetic clutch is provided on the input shaft provided with the inner ring, and the control cage is moved in the axial direction by energizing the electromagnetic coil of the electromagnetic clutch, and the opposing surfaces of the flange of the control cage and the flange of the rotary cage The control cage and the rotary cage are rotated relative to each other so that the circumferential width of the pocket is reduced by the action of the torque cam provided between them, and the pair of rollers are moved to the disengagement position at the pillar portion of each cage. The rotation transmission from the inner ring to the outer ring is cut off.

  In the rotation transmission device, when energization of the electromagnetic coil of the electromagnetic clutch is released, the control retainer and the rotation retainer are increased in the circumferential width of the pocket by the pressing action of the elastic member incorporated between the pair of opposed rollers. The pair of rollers facing each other forms a small gap between the cylindrical surface and the cam surface, and is placed at a standby position where the input shaft is immediately engaged by the rotation of the input shaft. , It has a feature of excellent responsiveness.

JP 2009-293679 A

  By the way, in the rotation transmission device described in Patent Document 1, each of various parts such as an outer ring, an inner ring, a roller, and a cage for holding the roller is made of metal in order to ensure strength. When the rotation transmission device was subjected to a durability test, a problem was found that an abnormal noise was generated each time the two-way clutch was engaged.

  As a cause of the generation of the noise, the pair of rollers in the two-way clutch are relatively moved in a direction away from each other by the pressing action of the elastic member, and a standby is formed where a minute gap is formed between the cylindrical surface of the outer ring and the cam surface of the inner ring. When arranged at the position, the control cage collides with the opening end face of the outer ring, and the collision is a collision between metals, so that it is considered that abnormal noise is generated.

  In addition, when the control cage collides with the outer ring, the control cage vibrates, and the vibration is transmitted to the rotary cage via the torque cam, and each column portion of the control cage and the rotary cage vibrates to rotate the roller. It is considered to be a delicate hit.

  The inventors of the present invention conducted various tests in order to reduce noise (noise) generated when the two-way clutch is engaged. It is found that noise can be attenuated in a state in which the strength of the two-way clutch is ensured by providing a soft soft material on the surface facing the roller.

  An object of the present invention is to reduce noise generated when a two-way clutch is engaged in a rotation transmission device that controls engagement and release of the two-way clutch with an electromagnetic clutch.

  In order to solve the above-described problems, in the present invention, a two-way clutch that transmits and blocks rotation between an input shaft and an output shaft that is arranged coaxially with the input shaft, and the two-way clutch are provided. An electromagnetic clutch for controlling engagement and disengagement, wherein the two-way clutch is between the inner periphery of the outer ring provided at the shaft end of the output shaft and the outer periphery of the inner ring provided at the shaft end of the input shaft. In addition, a plurality of pillars provided on the flange of the control cage and a plurality of pillars provided on the flange of the rotary cage are assembled so as to be alternately arranged in the circumferential direction, and formed between adjacent pillars. In the pocket, a pair of engagement elements that can be engaged with the inner periphery of the outer ring and the outer periphery of the inner ring, and an elastic member that urges the pair of engagement elements in a direction away from each other are incorporated. An electromagnetic clutch is connected to the control cage. A connected armature, a rotor that is axially opposed to the armature, and an electromagnet that is axially opposed to the rotor and attracts the armature to the rotor by energization, and a control retainer together with the armature by energizing the electromagnet A pair of engagement elements are moved in the axial direction toward the rotor, and the movement in the axial direction is converted into relative rotational movement in the direction in which the circumferential width of the pocket is reduced by the movement conversion mechanism. In the rotation transmission device that disengages the inner ring of the outer ring and the outer ring of the inner ring, a vibration absorbing function is provided on the column part of the control holder and the surface of the column part of the rotary holder facing the engaging element. The structure which provided the soft layer which has this was employ | adopted.

  Here, the soft layer may be any of a metal material film and a non-metal film such as an inorganic / organic material.

  From the viewpoint of durability and adhesion to the base material, a metal sprayed layer with a copper- or aluminum-based metal material sprayed, or a lead-based plating, tin-based plating, or lead-tin coating on the metal sprayed layer. Those provided with a metal plating film of system plating can be employed.

  On the other hand, polytetrafluoroethylene resin coating, molybdenum disulfide coating, molybdenum disulfide / graphite mixed coating, solid lubricant such as molybdenum disulfide and polytetrafluoroethylene resin (PTFE resin) and earth graphite as non-metallic coating It is possible to employ a lubricating coating composed of a transfer amount adjusting agent such as polyamideimide resin (PAI resin).

  Here, since the control cage rotates relative to the rotary cage by moving in the axial direction to engage and disengage the engagement element, the column of the control cage slides relative to the engagement element. . For this reason, when forming the soft layer which consists of the above nonmetallic coatings, it is good to improve adhesiveness by forming on the aluminum-type metal sprayed layer.

  Moreover, what consists of a resin film which uses polyamidoimide resin (PAI resin) as a matrix resin as a nonmetallic coating film is employable.

  If the soft layer is too thin, it will not be able to absorb noise effectively, and if it is too thick, it will be easy to peel off, and the engagement and release of the engaging element can be hindered when peeled off. Therefore, the film thickness is preferably in the range of 5 to 100 μm.

  In this invention, when the soft layer as described above is provided on the surfaces of the control retainer column and the rotating retainer column opposite to the engaging elements, the generation of sound when the two-way clutch is engaged was tested. The noise was lower than that of the rotation transmission device in which the soft layer was not formed, and it was confirmed by a test that the noise when the two-way clutch was engaged was attenuated.

A longitudinal sectional view showing an embodiment of a rotation transmission device according to the present invention Sectional view along the line II-II in FIG. Sectional drawing which shows the engagement state of the roller shown in FIG. Sectional view along line IV-IV in FIG. Sectional view along line VV in FIG. Sectional view along line VI-VI in FIG. (A) is sectional drawing along the VII-VII line of FIG. 6, (b) is sectional drawing which shows the state before the action | operation of a torque cam. Perspective view showing control cage Graph showing noise measurement results

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of a rotation transmission device according to the present invention. As shown in the figure, the rotation transmission device includes an input shaft 1, an output shaft 2 arranged coaxially with the input shaft 1, a housing 3 that covers the shaft ends of both shafts, and the housing 3. The two-way clutch 10 that transmits and shuts off the rotation from the input shaft 1 to the output shaft 2 and the electromagnetic clutch 50 that controls the engagement and release of the two-way clutch 10.

  The housing 3 has a cylindrical shape, and a small-diameter bearing cylinder 4 is provided at one end thereof, and the output shaft 2 is rotatably supported by a bearing 5 incorporated in the bearing cylinder 4.

  As shown in FIGS. 1 and 2, the two-way clutch 10 is provided with a cylindrical surface 12 on the inner periphery of the outer ring 11 provided at the shaft end of the output shaft 2, and is provided at the shaft end of the input shaft 1. A plurality of cam surfaces 14 are formed at equal intervals in the circumferential direction on the outer periphery of the inner ring 13, and a pair of rollers 15 and an elastic member 20 as an engagement member are incorporated between each of the plurality of cam surfaces 14 and the cylindrical surface 12, The roller 15 is held by a cage 16, and the rotation of the inner ring 13 is transmitted to the outer ring 11 by engaging one of the pair of rollers 15 with the cylindrical surface 12 and the cam surface 14 by rotating the inner ring 13 in one direction. Further, when the inner ring 13 rotates in the other direction, the other roller 15 is engaged with the cylindrical surface 12 and the cam surface 14 to transmit the rotation of the inner ring 13 to the outer ring 11.

  Here, a small-diameter concave portion 17 is formed on the inner surface side of the closed end portion of the outer ring 11, and the shaft end portion of the input shaft 1 is rotatably supported by a bearing 18 incorporated in the concave portion 17.

  The inner ring 13 is formed integrally with the input shaft 1. The cam surface 14 formed on the outer periphery of the inner ring 13 is formed of a pair of inclined surfaces 14 a and 14 b that are inclined in opposite directions, and has a wedge shape with narrow ends in the circumferential direction between the outer ring 11 and the cylindrical surface 12. A space is formed, and a flat spring support surface 19 facing the tangential direction of the inner ring 13 is provided between the pair of inclined surfaces 14 a and 14 b, and the elastic member 20 is supported by the spring support surface 19.

  The elastic member 20 consists of a coil spring. The elastic member 20 is incorporated between the pair of rollers 15, and the elastic member 20 biases the pair of rollers 15 in the separating direction to engage the cylindrical surface 12 and the cam surface 14. Is arranged.

  The holder 16 includes a control holder 16A and a rotary holder 16B. As shown in FIG. 6 and FIG. 7, the control retainer 16 </ b> A is provided with the same number of column portions 22 as the cam surface 14 on the outer peripheral portion of the annular flange 21 at equal intervals in the circumferential direction, and between the adjacent column portions 22. An arc-shaped long hole 23 is formed on the outer periphery, and a cylindrical portion 24 is provided on the outer periphery in a direction opposite to the column portion 22.

  On the other hand, as shown in FIG. 1, the rotary cage 16 </ b> B has a configuration in which the same number of column portions 26 as the cam surface 14 are provided at equal intervals in the circumferential direction on the outer periphery of the annular flange 25.

  The control retainer 16A and the rotation retainer 16B are a combination in which the column portions 26 of the rotation retainer 16B are inserted into the elongated holes 23 of the control retainer 16A, and the column portions 22 and 26 are alternately arranged in the circumferential direction. ing. In the combined state, the end portions of the column portions 22 and 26 are disposed between the outer ring 11 and the inner ring 13, and the flange 21 of the control holder 16 </ b> A and the flange 25 of the rotary holder 16 </ b> B are fitted to the outer periphery of the input shaft 1. The support ring 28 and the outer ring 11 are integrated.

  By incorporating the cages 16A and 16B as described above, as shown in FIG. 2, a pocket 27 is formed between the column portion 22 of the control cage 16A and the column portion 26 of the rotary cage 16B. A pair of opposed rollers 15 and an elastic member 20 are incorporated in each pocket 27 so as to face the 13 cam surfaces 14 in the radial direction.

  As shown in FIG. 1, the flange 21 of the control holder 16A is slidably supported along a slide guide surface 29 formed on the outer periphery of the input shaft 1, and is mounted on the flange 25 and the input shaft 1 of the rotary holder 16B. A thrust bearing 30 is incorporated between the above-described support rings 28 fitted.

  The thrust bearing 30 rotatably supports the rotary cage 16B in a state that prevents the rotary cage 16B from moving to the electromagnetic clutch 50 side.

  As shown in FIGS. 1 and 6, between the flange 21 of the control holder 16A and the flange 25 of the rotary holder 16B, the linear movement of the control holder 16A in the axial direction is controlled between the control holder 16A and the rotary holder 16B. A torque cam 40 is provided as a motion converting mechanism that converts the relative rotational motion of the motor.

  As shown in FIGS. 7 (a) and 7 (b), the torque cam 40 gradually increases as it reaches both ends deeper in the center in the circumferential direction on the opposing surfaces of the flange 21 in the control holder 16A and the flange 25 in the rotary holder 16B. A pair of opposing cam grooves 41, 42 that are shallower are provided, and a ball 43 is incorporated between the pair of opposing cam grooves 41, 42.

  Here, the cam groove 41 is formed by a pair of inclined cam surfaces 41a and 41b inclined in opposite directions, and has a V-shaped cross section. On the other hand, like the cam groove 41, the cam groove 42 is formed by a pair of inclined cam surfaces 42a and 42b and has a V-shaped cross section.

  When the control holder 16A moves in the axial direction in the direction in which the flange 21 of the control holder 16A approaches the flange 25 of the rotary holder 16B, the torque cam 40 has a ball 43 as shown in FIG. Rolls toward the deepest groove depth of the cam grooves 41 and 42, and the control holder 16A and the rotary holder 16B are relatively rotated in the direction in which the circumferential width of the pocket 27 is reduced. .

  As shown in FIG. 5, a cylindrical holder fitting surface 44 having a diameter larger than that of the slide guide surface 29 is formed at the intersection of the one end surface in the axial direction of the inner ring 13 and the slide guide surface 29. A spring holder 45 is fitted to the surface 44.

  The spring holder 45 is prevented from rotating with respect to the holder fitting surface 44 and is supported in a non-movable manner in the axial direction. As shown in FIG. A plurality of detent pieces 46 are formed between the column portions 26 of the rotation cage 16B.

  When the control retainer 16A and the rotation retainer 16B rotate relative to each other in a direction that reduces the circumferential width of the pocket 27, the plurality of detent pieces 46 are connected to the column portion 22 of the control retainer 16A and the rotation retainer 16B. The column portion 26 is received at both side edges to hold the pair of opposed rollers 15 in a neutral position.

  As shown in FIG. 5, spring holding pieces 47 projecting to the outer diameter side of the plurality of elastic members 20 are provided on the outer peripheral portion of the spring holder 45, and the elastic members 20 are formed into a pair of rollers 15 by the spring holding pieces 47. Escape to the outer diameter side from the gap is prevented.

  As shown in FIG. 1, the electromagnetic clutch 50 includes an armature 51 that faces the end face of the cylindrical portion 24 formed in the control retainer 16A in the axial direction, a rotor 52 that faces the armature 51 in the axial direction, and the rotor 52 and an electromagnet 53 facing in the axial direction.

  The armature 51 is fitted to the outer periphery of the support ring 28 and is rotatably and slidably supported. The control holder 16A and the armature 51 are connected and integrated by press-fitting 24. With this connection, the armature 51 is slidably supported at two locations in the axial direction of the cylindrical outer diameter surface 54 of the support ring 28 and the slide guide surface 29 on the outer periphery of the input shaft 1.

  Here, the support ring 28 is positioned in the axial direction by a step portion 31 formed on the other side in the axial direction of the slide guide surface 29 of the input shaft 1.

  The rotor 52 is fitted to the input shaft 1, is positioned in the axial direction by a shim 56 built in between the support ring 28, and is prevented from rotating with respect to the input shaft 1.

  The electromagnet 53 includes an electromagnetic coil 53a and a core 53b that supports the electromagnetic coil 53a. The core 53b is fitted in the other end opening of the housing 3, and is attached in the other end opening of the housing 3. The retaining ring 6 is used to prevent the removal. The core 53 b is rotatable relative to the input shaft 1 via a bearing 57 fitted to the input shaft 1.

  In the rotation transmission device having the above-described structure, when the energization of the electromagnetic coil 53a of the electromagnetic clutch 50 shown in FIG. 1 is interrupted, the roller 15 of the two-way clutch 10 has a cylindrical surface 12 of the outer ring 11 as shown in FIG. And it is in the state engaged with the cam surface 14 of the inner ring 13.

  Therefore, when the input shaft 1 rotates in one direction, the rotation is transmitted from the inner ring 13 to the outer ring 11 through one of the pair of opposed rollers 15, and the output shaft 2 rotates in the same direction as the input shaft 1. When the input shaft 1 rotates in the opposite direction, the rotation is transmitted to the output shaft 2 via the other roller 15.

  When the electromagnetic coil 53a of the electromagnetic clutch 50 is energized while the two-way clutch 10 is engaged, an attractive force acts on the armature 51, and the armature 51 moves in the axial direction and is attracted to the rotor 52.

  At this time, since the armature 51 and the control holder 16A are connected and integrated by fitting the connecting cylinder 55 and the cylinder portion 24, the control holder 16A moves along with the movement of the armature 51 in the axial direction. The flange 21 moves in a direction approaching the flange 25 of the rotary cage 16B.

  Due to the relative movement of the control holder 16A and the rotary holder 16B, the ball 43 shown in FIG. 7B is directed to the deepest position of the cam grooves 41 and 42 as shown in FIG. 7A. The control holder 16A and the rotary holder 16B rotate relative to each other in the direction in which the circumferential width of the pocket 27 decreases.

  Due to the relative rotation of the control holder 16A and the rotary holder 16B, the pair of opposed rollers 15 shown in FIG. 3 are pushed by the column portion 22 of the control holder 16A and the column portion 26 of the rotary holder 16B so as to approach each other. Moving.

  For this reason, as shown in FIG. 2, the roller 15 is displaced to a neutral position where the engagement with the cylindrical surface 12 and the cam surface 14 is released, and the two-way clutch 10 is disengaged.

  When the rotational torque is input to the input shaft 1 and the input shaft 1 is rotated in one direction in the disengaged state of the two-way clutch 10, the detent piece 46 formed on the spring holder 45 is controlled by the control retainer 16A. The control holder 16A and the rotary holder 16B rotate together with the input shaft 1 in order to press one of the pillar part 22 and the pillar part 26 of the rotary holder 16B. At this time, since the pair of opposed rollers 15 is held in the neutral position where the engagement is released, the rotation of the input shaft 1 is not transmitted to the outer ring 11 and the input shaft 1 rotates freely.

  Here, when the control retainer 16A and the rotation retainer 16B are relatively rotated in the direction in which the circumferential width of the pocket 27 is reduced, the column portion 22 of the control retainer 16A and the column portion 26 of the rotation retainer 16B are The amount of relative rotation is regulated by contacting both side edges of the rotation stopper piece 46.

  For this reason, the elastic member 20 does not shrink more than necessary, and even if it is repeatedly expanded and contracted, it will not be damaged by fatigue.

  When the energization of the electromagnetic coil 53a is released in the free rotation state of the input shaft 1, the armature 51 is released from the suction and becomes rotatable. By releasing the suction, the pair of opposed rollers 15 are moved away from each other by the pressing of the elastic member 20, and the control holder 16A and the rotary holder 16B are relatively rotated in the direction in which the circumferential width of the pocket 27 is increased. The control cage 16A is moved to the outer ring 11 side by the action of the torque cam 40, and is brought into a stopped state by a collision with the opening end surface of the outer ring 11. Further, as shown in FIG. 3, each of the pair of opposed rollers 15 is disposed at a standby position where a minute gap is formed between the cylindrical surface 12 and the cam surface 14. Through this, the rotation of the input shaft 1 is transmitted to the output shaft 2.

  Here, when the input shaft 1 is stopped and the rotation direction of the input shaft 1 is switched, the rotation of the input shaft 1 is transmitted to the output shaft 2 via the other roller 15.

  As described above, when the energization of the electromagnetic coil 53a is interrupted, the control holder 16A and the rotary holder 16B rotate relative to each other in the direction in which the circumferential width of the pocket 27 increases, and each of the pair of opposed rollers 15 has the cylindrical surface 12. In addition, since a small gap is formed between the cam surface 14 and the cam surface 14 immediately enters the standby state, the play in the rotational direction is small, and the rotation of the inner ring 13 can be immediately transmitted to the outer ring 11.

  Further, since the rotational torque is transmitted from the input shaft 1 to the output shaft 2 through the same number of rollers 15 as the cam surface 14, a large rotational torque can be transmitted from the input shaft 1 to the output shaft 2.

  When the control retainer 16A and the rotation retainer 16B are relatively rotated in the direction in which the circumferential width of the pocket 27 is increased, the ball 43 rolls and moves toward the shallow groove portion of the pair of opposed cam grooves 41 and 42. The state shown in FIG.

  As described above, the two-way clutch 10 is engaged when the electromagnetic clutch 50 is turned off by releasing the energization of the electromagnet 53, and the two-way clutch 10 is released when the electromagnetic clutch 50 is turned on by supplying the electromagnet 53. It is extremely effective for applications that require a fail-safe mechanism.

  In the two-way clutch 10, the outer ring 11, the inner ring 13, the control retainer 16A, the rotation retainer 16B, the roller 15, and the elastic member 20 are made of metal to ensure strength.

  For this reason, when the energization of the electromagnetic coil 53a is released, the pair of opposed rollers 15 move relative to each other in a direction away from each other by the pressing of the elastic member 20, and a position where a minute gap is formed between the cylindrical surface 12 and the cam surface 14 is reached. When moved, the control holder 16A collides with the opening end face of the outer ring 11, and noise is generated by the collision. Further, the control retainer 16A vibrates due to the collision, and the vibration is transmitted to the rotation retainer 16B via the torque cam 40, and the column portions 22 and 26 of the retainers 16A and 16B vibrate to generate noise. Can be considered.

  In order to reduce the noise, here, as shown in FIGS. 3 and 8, a soft layer 35 is provided on the surface of the column portion 22 of the control retainer 16A and the column portion 26 of the rotation retainer 16B facing the roller 15. Provided.

  Here, since the control holder 16A rotates relative to the rotation holder 16B by moving in the axial direction to engage and disengage the roller 15, the column 22 of the control holder 16A has the roller 15 Slide against. For this reason, when the soft layer 35 has a high friction coefficient, there is a possibility that abrasion or peeling may occur due to sliding with respect to the roller 15.

  Therefore, here, a PTFE resin-mixed thermosetting resin containing a polytetrafluoroethylene resin (PTFE resin) excellent in low friction characteristics and wear characteristics in the thermosetting resin is employed as the soft layer 35.

  Further, when the thickness of the soft layer 35 is less than 5 μm, noise cannot be effectively absorbed, and when the thickness exceeds 100 μm, it is easy to peel off, and when the peeled off, the roller 15 is engaged and released. The thickness of the soft layer 35 is in the range of 5 to 100 μm.

  Incidentally, the columnar portions 22 and 26 of the control cage 16A and the rotary cage 16B include a soft layer 35 containing PTFE resin 50 vol% in the thermosetting resin, and the column portions 22 of the control cage 16A and the rotary cage 16B. 26, and the two-way clutch 10 of the rotation transmission device (comparative product) in which the soft layer 35 is not provided in the column portions 22 and 26 of the control retainer 16A and the rotation retainer 16B. When the generation of sound during the engagement was tested, the test results shown in FIG. 9 were obtained.

  During the test, the noise meter terminal is located 30 mm away from the input shaft 1 and the noise output from each of the present invention product with 33 samples and the comparison product with 120 samples. Was measured.

  When measuring, measure 5 times at a reference angle (0 °) of the input shaft 1, measure 5 times when rotated 90 ° from the reference position, and further measure 5 times at a position rotated 180 ° from the reference position. did. An average value of the measured values was obtained, and a standard deviation (3σ) was calculated from the average value to obtain a graph shown in FIG.

  From the test results of the graph shown in FIG. 9, it can be understood that noise can be reduced by providing the soft layer 35 on the column portions 22 and 26 of the control cage 16A and the rotary cage 16B. The noise reduction is presumed to be because the soft layer 35 is elastically deformed and absorbs the impact force at the time of contact when the column portions 22 and 26 vibrate and contact the roller 15.

  In the embodiment, a PTFE resin-mixed thermosetting resin containing a PTFE resin in the thermosetting resin is adopted as the soft layer 35 from the viewpoint of the convenience of processing and the cost-effectiveness of the performance for materials. Is not limited to this.

  For example, a metal sprayed layer in which a copper-based or aluminum-based metal material is sprayed, or a metal material type in which a metal plating film of lead-based plating, tin-based plating, or lead-tin-based plating is provided on the metal sprayed layer. There may be.

  Also, the amount of transfer of solid lubricants such as polytetrafluoroethylene resin coating, molybdenum disulfide coating, molybdenum disulfide / graphite mixed coating, molybdenum disulfide and polytetrafluoroethylene resin (PTFE resin) and earth graphite is adjusted. It may be a non-metallic material formed by a lubricant film made of a binder such as a polyamideimide resin (PAI resin). When forming such a soft layer made of a non-metallic coating, it is preferable to improve the adhesion by forming it on an aluminum-based metal sprayed layer.

  Further, a polyamideimide resin (PAI resin) may be used as a matrix resin, and the matrix resin may be formed of a resin film containing a polytetrafluoroethylene resin as a fluororesin and graphite.

  Since any of the above materials has elastic deformability, noise can be reduced.

DESCRIPTION OF SYMBOLS 1 Input shaft 2 Output shaft 10 Two-way clutch 11 Outer ring 12 Cylindrical surface 13 Inner ring 14 Cam surface 15 Roller (engagement element)
16A Control cage 16B Rotating cage 20 Elastic member 21 Flange 22 Column portion 25 Flange 26 Column portion 35 Soft layer 40 Torque cam (motion conversion mechanism)
50 Electromagnetic clutch 51 Armature 52 Rotor 53 Electromagnet

Claims (7)

A two-way clutch that transmits and blocks rotation between the input shaft and an output shaft that is arranged coaxially with the input shaft, and an electromagnetic clutch that controls engagement and release of the two-way clutch;
A plurality of two-way clutches are provided on the flange of the control cage between the inner periphery of the outer ring provided at the shaft end of the output shaft and the outer periphery of the inner ring provided at the shaft end of the input shaft. A plurality of pillar portions provided on the pillar portion and the flange of the rotary cage are assembled so that they are alternately arranged in the circumferential direction, and the inner ring of the outer ring and the outer periphery of the inner ring are placed in pockets formed between adjacent pillar portions. A pair of engagement elements that can be engaged with each other, and an elastic member that urges the pair of engagement elements in a direction away from each other;
The electromagnetic clutch comprises an armature connected to the control retainer, a rotor facing the armature in the axial direction, an electromagnet facing the rotor in the axial direction, and attracting the armature to the rotor by energization,
By energizing the electromagnet, the armature and the control cage are moved in the axial direction toward the rotor, and the movement in the axial direction is caused to move the control cage and the rotary cage in the direction in which the circumferential width of the pocket is reduced. In the rotation transmission device that converts the pair of engaging elements into a relative rotational motion so as to disengage the inner ring of the outer ring and the outer ring of the inner ring.
A rotation transmission device, wherein a soft layer having a vibration absorbing function is provided on a surface of the control cage and the column of the rotary cage facing the engagement element.   The rotation transmission device according to claim 1, wherein the soft layer has a thickness of 5 to 100 μm.   The rotation transmission device according to claim 1, wherein the soft layer is made of a copper-based or aluminum-based metal sprayed layer.   The soft layer is composed of a copper-based or aluminum-based metal sprayed layer and a metal plating film provided on the surface, and the plating film is a kind of lead-based plating, tin-based plating, or lead-tin-based plating. The rotation transmission device according to claim 1 or 2.   The soft layer is a polytetrafluoroethylene resin coating, a molybdenum disulfide coating, a molybdenum disulfide / graphite mixed coating, a solid lubricant such as molybdenum disulfide or polytetrafluoroethylene resin, and a transfer amount adjusting agent such as earth graphite. The rotation transmission device according to claim 1 or 2, comprising a lubricating coating made of a binder such as polyamideimide.   The rotation transmission device according to claim 5, wherein the soft layer is formed through an aluminum-based metal sprayed layer.   The rotation transmission device according to claim 1, wherein the soft layer is made of a resin film using a polyamide-imide resin as a matrix resin.

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