WO2020054763A1 - 逆入力遮断クラッチ付電動モータ - Google Patents
逆入力遮断クラッチ付電動モータ Download PDFInfo
- Publication number
- WO2020054763A1 WO2020054763A1 PCT/JP2019/035708 JP2019035708W WO2020054763A1 WO 2020054763 A1 WO2020054763 A1 WO 2020054763A1 JP 2019035708 W JP2019035708 W JP 2019035708W WO 2020054763 A1 WO2020054763 A1 WO 2020054763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- input
- output
- housing
- electric motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
- F16D51/48—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes
- F16D51/50—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes mechanically actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
- F16D67/02—Clutch-brake combinations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
- F16D41/10—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Definitions
- the present invention relates to an electric motor provided with a reverse input cutoff clutch.
- an electric motor is used as a drive source, and a displacement member such as a door or a window is displaced based on the rotational force of the electric motor.
- a displacement member such as a door or a window is displaced based on the rotational force of the electric motor.
- an electric actuator used for an electric door or an electric power window of an automobile for example, it is necessary to hold the position of the displacement member regardless of the force acting on the displacement member such as the weight of the window. Even when the displacement member is not performing a displacement operation, if the electric motor is energized and exerts a rotational force, the position of the displacement member can be maintained regardless of the force acting on the displacement member. It is disadvantageous from the aspect of chemical conversion.
- the position of the displacement member can be maintained, but in this case, the efficiency is reduced and a large electric motor is used. And the size of the entire apparatus may be increased.
- JP-A-2007-16878 describes the structure of an electric actuator having a reverse input cutoff clutch between an output shaft and a screw shaft of an electric motor arranged in parallel.
- the reverse input cutoff clutch has a function of transmitting torque from the output shaft of the electric motor to the screw shaft, while completely cutting off torque from the screw shaft and not transmitting the torque to the output shaft. Therefore, in the electric actuator described in Japanese Patent Application Laid-Open No. 2007-16878, the position of the nut arranged around the screw shaft can be maintained without energizing the electric motor.
- JP-A-2007-232095 and JP-A-2004-84918 describe the structure of a lock-type reverse input cutoff clutch.
- the lock-type reverse input cut-off clutch is configured such that, when a rotational torque is reversely input to the output member, the rolling element disposed in the wedge-shaped space between the inner member and the outer member has a diameter within the wedge-shaped space. It has a function of preventing rotation of the output member by moving to the side with a smaller width in the direction and stretching between the inner member and the outer member.
- the input member and the output member of the reverse input cutoff clutch are arranged in parallel with the output shaft of the electric motor. Therefore, in addition to a bearing for rotatably supporting the output shaft of the electric motor with respect to the housing, a bearing for rotatably supporting each of the input member and the output member of the reverse input cutoff clutch is required. Therefore, there is room for improvement in terms of reducing the size of the electric actuator.
- the work of engaging the male serration and the female serration is performed manually, but at this time, the center axis of the output shaft of the motor is shifted from the center axis of the input member of the clutch, and the male serration is displaced. And / or the tip of the female serration may come into contact with another member or the like, and the male serration and / or the female serration may be damaged such as being deformed. As a result, there is a problem that it is difficult to engage the male serration with the female serration, and it is difficult to couple the output shaft of the motor and the input member of the clutch.
- an object of the present invention is to realize a structure of an electric motor with a reverse input cutoff clutch that can be easily reduced in size.
- An electric motor with a reverse input cutoff clutch includes a housing, an output shaft, one radial bearing, a rotor, and a stator.
- a first shaft rotatably supported inside the housing, a second shaft coaxially arranged with the first shaft, and an output shaft arranged inside the housing; and
- a reverse input cut-off clutch for connecting the first shaft and the second shaft;
- the reverse input cut-off clutch transmits the rotational torque input to the first shaft to the second shaft when the rotational torque is input to the first shaft, and When the rotational torque is reversely input to the shaft, the rotational torque reversely input to the second shaft is completely cut off, or a part of the rotational torque reversely input to the second shaft is reduced.
- the one radial bearing rotatably supports the second shaft with respect to the housing.
- the rotor is disposed around the first shaft and rotates integrally with the first shaft.
- the stator is arranged around the rotor and supported and fixed to the housing.
- the one radial bearing is preferably constituted by a radial rolling bearing, and more preferably a single row deep groove ball bearing.
- One of the first shaft and the second shaft has a cylindrical shaft-side concave portion at the center of the axial end surface, and the first shaft and the second shaft
- the other of the shafts may have a shaft-side convex portion that can be relatively rotated in the shaft-side concave portion and that is fitted inside without any play in the radial direction.
- one of the first shaft and the second shaft has a cylindrical shaft-side recess at the center of an axial end surface, and the first shaft and the second shaft
- the other shaft has a shaft-side convex portion inserted into the shaft-side concave portion, and the output shaft has an inner peripheral surface of the shaft-side concave portion and an outer peripheral surface of the shaft-side convex portion.
- the housing includes a first housing element that houses the stator, a second housing element that houses the reverse input cutoff clutch, and a radial direction of the first housing element and the second housing element. It is preferable to provide housing positioning means for positioning.
- the housing positioning means includes a housing-side concave portion of one of the first housing element and the second housing element, and the first housing element and the second housing element.
- the second housing element is formed by a concave-convex fitting portion with a housing-side convex portion of the other housing element.
- the reverse input cutoff clutch Pressed surface, An input unit that rotates integrally with the first shaft; An output unit arranged coaxially with the input unit, and integrally rotating with the second shaft;
- a rotational torque is input to the input section
- the input section moves in a direction away from the pressed surface based on engagement with the input section, and is input to the input section by engaging with the output section.
- the rotational torque is transmitted to the output unit and the rotational torque is reversely input to the output unit
- the rotational unit moves toward the pressed surface based on the engagement with the output unit and moves toward the pressed surface.
- the engaging element Can be provided.
- the engaging element is disposed between the pressed surface and an output-side engaging section provided in the output section, and an input provided in a portion of the input section radially deviated from a rotation center.
- the part-side engaging part can be engaged with the engaging-element-side input engaging part provided in the engaging element so that the part-side engaging part can be moved toward and away from the pressed surface.
- the engaging element may be constituted by a plurality of engaging elements arranged so as to sandwich the output-portion-side engaging section from the outside in the radial direction. Further, the engagement element may be constituted by a pair of engagement elements arranged so as to sandwich the output-portion-side engagement section from the outside in the radial direction by the respective bottom surfaces.
- the input unit is formed integrally with the first shaft
- the output unit is formed integrally with the second shaft.
- the housing is configured to have the pressed surface on an inner peripheral surface.
- the output shaft is configured by connecting the first shaft and the second shaft arranged coaxially to each other by the reverse input cutoff clutch.
- the size can be easily reduced.
- the second shaft is rotatably supported on the housing by one radial bearing, so that downsizing can be further facilitated.
- the first shaft can be integrally formed with the input portion of the reverse input cutoff clutch.
- the second shaft may be formed integrally with the output of the reverse input cutoff clutch. From these aspects, it is easier to reduce the size as compared with the structure described in JP-A-2007-16878.
- FIG. 1 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a first example of an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of an electric motor with a reverse input cutoff clutch according to a first example of the embodiment of the present invention.
- FIG. 3 is a cross-sectional view illustrating a first example of the embodiment of the present invention, in which a reverse input cutoff clutch is taken out.
- FIG. 4 is a perspective view of the first example of the embodiment of the present invention, in which a reverse input cutoff clutch is taken out and shown.
- FIG. 5 is a perspective view of the first example of the embodiment of the present invention, in which the input portion of the reverse input cutoff clutch is taken out and shown.
- FIG. 1 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a first example of an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of an electric motor with a reverse input cutoff clutch according to a first
- FIG. 6 is a perspective view of the first example of the embodiment of the present invention, in which the output portion of the reverse input cutoff clutch is taken out and shown.
- FIG. 7 is a cross-sectional view illustrating a reverse input cutoff clutch in which a rotation torque is input to an input unit according to a first example of the embodiment of the present invention.
- FIG. 8 is a cross-sectional view illustrating a reverse input cut-off clutch in which a rotational torque is reversely input to an output unit according to a first example of the embodiment of the present invention.
- FIG. 9 is a partially enlarged view of FIG. 8 illustrating a relationship between forces acting on the engagement element from the output unit when a rotational torque is reversely input to the output unit, regarding the first example of the embodiment of the present invention. is there.
- FIG. 10 is a cross-sectional view of a reverse input cut-off clutch for explaining a condition in which the output unit is locked or semi-locked when the rotation torque is reversely input to the output unit, according to the first example of the embodiment of the present invention. It is.
- FIG. 11 shows a first example of the embodiment of the present invention, in which a rotational torque is reversely input to an output member, a pressing surface of an engaging element comes into contact with a pressed surface, and It is the elements on larger scale which show a mode that the convex part was located in the width direction center part of the engaging element.
- FIG. 12 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a comparative example of the present invention.
- FIG. 13A and 13B are perspective views illustrating two examples of the fitting shaft portion of the second shaft.
- FIGS. 14A and 14B are perspective views showing two examples of the driven part.
- FIG. 15 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a second example of the embodiment of the present invention.
- FIG. 16 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a third embodiment of the present invention.
- FIG. 17 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a fourth example of the embodiment of the present invention.
- FIG. 18 is an exploded perspective view of an electric motor with a reverse input cutoff clutch according to a fourth embodiment of the present invention.
- FIG. 15 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a second example of the embodiment of the present invention.
- FIG. 16 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a third embodiment of
- FIG. 19 is an exploded perspective view showing the first shaft in a fourth example of the embodiment of the present invention.
- FIG. 20 is a sectional view showing an electric motor with a reverse input cutoff clutch according to a fifth embodiment of the present invention.
- FIG. 21 is a perspective view showing an electric motor with a reverse input cutoff clutch according to a fifth embodiment of the present invention.
- FIG. 22 is a cross-sectional view illustrating an electric motor with a reverse input cutoff clutch according to a sixth example of the embodiment of the present invention.
- FIG. 23 is an enlarged view of a part X in FIG.
- the electric motor with a reverse input cutoff clutch of the present example includes a housing 1, an output shaft 2, one radial bearing 3, a rotor 4, and a stator 5.
- the housing 1 includes a first housing element 6 and a second housing element 7.
- the first housing element 6 includes a main body 8 and a lid 9.
- the main body 8 includes a cylindrical portion 10, a circular ring portion 11 bent radially inward from one axial end (left side in FIG. 1) of the cylindrical portion 10, and a radially inner end of the circular ring portion 11.
- the holding cylindrical portion 12 bent to the other side in the axial direction (the right side in FIG. 1) from the portion, and the ridge 13 protruding from the radially intermediate portion of one side surface in the axial direction of the annular portion 11 toward the one side in the axial direction.
- the main body portion 8 includes a first flange portion 14 protruding radially outward from a plurality of circumferential locations (three locations in the illustrated example) on the outer peripheral surface of the circular ring portion 11, and a first flange portion 14. And a circular hole 15 penetrating each in the axial direction.
- the lid 9 includes a disc-shaped bottom plate 16 that closes the opening on the other axial side of the cylindrical portion 10 of the main body 8, and a holding cylindrical portion 17 protruding from one axial side of the bottom plate 16. Prepare.
- the lid 9 is fixed to the other axial end of the cylindrical portion 10 of the main body 8 by fixing means such as welding or screwing, and covers the opening on the other axial side of the cylindrical portion 10. .
- the second housing element 7 includes a small-diameter cylindrical portion 18 on one side in the axial direction, a large-diameter cylindrical portion 19 on the other side in the axial direction, and a side plate portion 20 connecting the small-diameter cylindrical portion 18 and the large-diameter cylindrical portion 19. Is provided.
- the second housing element 7 includes a second flange portion 21 protruding radially outward from a plurality of circumferential positions (three positions in the illustrated example) on the outer peripheral surface of the large-diameter cylindrical portion 19, and the second flange portion 21. And a screw hole 22 penetrating the flange portion 21 in the axial direction.
- the outer peripheral surface of the ridge 13 of the first housing element 6 is radially inwardly fitted to the inner peripheral surface of the other end in the axial direction of the large-diameter cylindrical portion 19 of the second housing element 7.
- the ridge 13 forms a housing-side protrusion
- the inner peripheral surface of the other end in the axial direction of the large-diameter cylindrical portion 19 forms a housing-side recess
- the outer peripheral surface of the ridge 13 The concave / convex fitting portion with the inner peripheral surface of the other end in the axial direction of the large-diameter cylindrical portion 19 forms housing positioning means.
- the first housing element 6 and the second housing element 7 are screwed with a bolt (not shown) inserted through the circular hole 15 of the first flange 14 into a screw hole 22 of the second flange 21.
- the housing 1 is constituted by being joined together by tightening.
- the output shaft 2 is disposed inside the housing 1, a first shaft 23 rotatably supported inside the housing 1, a second shaft 24 disposed coaxially with the first shaft 23, Further, a reverse input cutoff clutch 25 for connecting the first shaft 23 and the second shaft 24 is provided.
- the first shaft 23 is rotatably supported inside the first housing element 6 of the housing 1 by a pair of bearings 44a and 44b.
- one bearing 44a in the axial direction is provided with an inner peripheral surface of the holding cylindrical portion 12 of the main body 8 and a middle diameter portion 72 disposed at an axially intermediate portion of the first shaft 23.
- the bearing 44b on the other side in the axial direction is disposed between the inner circumferential surface of the holding cylindrical portion 17 of the lid 9 and the end on the other side in the axial direction of the first shaft 23. It is arranged between the small diameter portion 73 and the outer peripheral surface.
- single row deep groove ball bearings are used as the bearings 44a and 44b.
- the bearing 44a on one side in the axial direction includes an inner ring 74a, an outer ring 75a, and a plurality of rolling elements (balls) 76a arranged to be able to roll between the inner ring 74a and the outer ring 75a.
- the inner race 74 a is fitted around the outer peripheral surface of the middle diameter portion 72 of the first shaft 23, and projects one end surface in the axial direction to a step surface 77 existing at one end in the axial direction of the middle diameter portion 72. I guess.
- the outer ring 75 a is fitted inside the inner peripheral surface of the holding cylindrical portion 12 of the main body 8, and has an inward flange 78 at the other axial end of the holding cylindrical portion 12, and an inner circumferential surface of the holding cylindrical portion 12. It is sandwiched between both sides in the axial direction with a retaining ring 79 locked on the surface.
- the bearing 44b on the other side in the axial direction includes an inner ring 74b, an outer ring 75b, and a plurality of rolling elements (balls) 76b that are arranged to be rollable between the inner ring 74b and the outer ring 75b.
- the inner ring 74b is fitted around the outer peripheral surface of the small diameter portion 73 of the first shaft 23 by interference fit.
- the outer race 75b is externally fitted and fixed to the inner peripheral surface of the holding cylindrical portion 17 of the lid 9 by interference fit.
- the first shaft 23 has an input portion 26 of a reverse input cutoff clutch 25 described later at an end portion on one side in the axial direction (a portion existing on one side in the axial direction from a portion where the bearing 44a on one side in the axial direction is externally fitted).
- a cylindrical shaft-side concave portion 27 is provided at the center of one end face in the axial direction.
- the second shaft 24 has an output portion 28 of the reverse input cutoff clutch 25 at the other end in the axial direction, and the center of the other end surface of the output portion engaging portion 29 of the output portion 28 on the other side in the axial direction. And a cylindrical shaft-side protrusion 30 protruding in the axial direction from the portion.
- the second shaft 24 fits the shaft-side protrusion 30 into the shaft-side recess 27 of the first shaft 23 in the radial direction without rattling and enabling relative rotation (inlay fitting).
- the first shaft 23 and the first shaft 23 are arranged coaxially.
- the second shaft 24 further includes a support shaft 31 at an intermediate portion in the axial direction.
- the support shaft 31 of the second shaft 24 is rotatably supported by the radial bearing 3 with respect to the housing 1. That is, the radial bearing 3 is disposed between the inner peripheral surface of the small-diameter cylindrical portion 18 of the second housing element 7 and the outer peripheral surface of the support shaft 31 of the second shaft 24.
- a single row deep groove ball bearing capable of supporting not only a radial load but also a thrust load is used as the radial bearing 3.
- the outer ring 32 of the radial bearing 3 is fitted inside the small-diameter cylindrical portion 18 without looseness, and the outer-diameter flange protrudes radially inward from one axial end of the small-diameter cylindrical portion 18. It is sandwiched in the axial direction between the portion 33 and a retaining ring 34 a locked on the inner peripheral surface of the small-diameter cylindrical portion 18.
- the inner ring 35 of the radial bearing 3 is fitted to the outer peripheral surface of the support shaft portion 31 without looseness, and has an inner-diameter flange portion that protrudes radially outward from the other axial end of the support shaft portion 31. 36 and a retaining ring 34b locked to the outer peripheral surface of the support shaft portion 31 in the axial direction.
- the radial bearing 3 has a sealing function for preventing leakage of grease sealed in the housing 1 and preventing foreign matter from entering the housing 1 from outside.
- seal rings are respectively arranged between the inner peripheral surfaces of both ends of the outer ring 32 in the axial direction and the outer peripheral surfaces of the both ends of the inner ring 35 in the axial direction.
- the second shaft 24 is provided with a fitting shaft portion 37 at a portion existing on one side in the axial direction from the support shaft portion 31, and is provided at one position in the circumferential direction of the outer peripheral surface of the fitting shaft portion 37 in the axial direction. And an engagement ridge 38 extending to the front.
- the pulley 39 has a fitting hole 40 penetrating in the axial direction at the center, and an engagement concave groove 41 extending in the axial direction at one position in the circumferential direction on the inner peripheral surface of the fitting hole 40.
- the pulley 39 engages the fitting hole 40 with the fitting shaft 37 and engages the engaging groove 41 with the engaging ridge 38 to thereby form the fitting shaft 37 of the second shaft 24. It is externally fitted to transmit torque.
- a screw 43 is inserted through a through-hole 42 that passes through the pulley 39 in the radial direction, and is screwed into a screw hole (not shown) formed in the fitting shaft portion 37 of the second shaft 24. This prevents the pulley 39 from falling off the fitting shaft 37.
- the reverse input cutoff clutch 25 transmits the rotational torque input to the first shaft 23 to the second shaft 24, and
- the rotational torque reversely input to the second shaft 24 is completely cut off and is not transmitted to the first shaft 23, or the second shaft 24 Has a function of transmitting part of the rotational torque reversely input to the first shaft 23 to the first shaft 23 and blocking the remaining portion.
- the reverse input cutoff clutch 25 is arranged on the inner diameter side of the large-diameter cylindrical portion 19 of the second housing element 7.
- the rotor 4 is disposed (fitted) around an intermediate portion in the axial direction of the first shaft 23 so as to rotate integrally with the first shaft 23.
- the rotor 4 can adopt various conventionally known structures such as a cage type, a winding type, and a permanent magnet type.
- the stator 5 is arranged coaxially with the rotor 4 around the rotor 4 and is supported and fixed to the housing 1. Specifically, the inner peripheral surface of the stator 5 is opposed to the outer peripheral surface of the rotor 4 via a minute gap in the radial direction, and the outer peripheral surface of the stator 5 is the main body of the first housing element 6. The portion 8 is supported and fixed to the inner peripheral surface of the cylindrical portion 10.
- various conventionally known structures such as a winding type and a permanent magnet type can be adopted.
- the reverse input cutoff clutch 25 includes an input portion 26, an output portion 28, a pressed surface 45, and a pair of engagement members 46.
- the input portion 26 is provided at one end in the axial direction of the first shaft 23 (a portion existing on one side in the axial direction from a portion where the one-side bearing 44a is externally fitted).
- the input section 26 includes an input shaft section 47 and a pair of input section side engaging sections 48.
- the input shaft portion 47 has a stepped cylindrical shape, and is provided in a portion of the first shaft 23 adjacent to one side in the axial direction of a portion where the bearing 44a on one side in the axial direction is externally fitted.
- the input unit 26 further includes a shaft-side recess 27 that is recessed in the axial direction from the center of one end surface of the input shaft 47 on one side in the axial direction. That is, in this example, the bearing 44a on one side in the axial direction functions to rotatably support the end on one side in the axial direction of the first shaft 23 with respect to the housing 1 and the input portion 26 of the reverse input cutoff clutch 25. Has the function of rotatably supporting.
- the pair of input-portion-side engaging portions 48 each have an arcuate cross-sectional shape, and protrude in the axial direction from two radially opposite positions on one axial end surface of the input shaft portion 47.
- the pair of input portion-side engaging portions 48 are separated from each other in the radial direction of the input portion 26.
- the pair of input portion side engaging portions 48 are arranged on a portion of one end surface of the input shaft portion 47 on one side in the axial direction, which is radially deviated from the rotation center of the first shaft 23.
- Each of the pair of input-portion-side engaging portions 48 has a radially outer surface having the same contour as the cylindrical surface forming the outer peripheral surface at one end in the axial direction of the input shaft portion 47, and a flat outer surface. And a planar radial inner surface.
- the output unit 28 is provided at the other end of the second shaft 24 in the axial direction.
- the output unit 28 includes an output unit-side engaging unit 29, as shown in FIG.
- the output-portion-side engaging portion 29 protrudes in the axial direction from the other end surface of the support shaft portion 31 in the axial direction.
- the output section engaging section 29 has a cam function. That is, the distance from the rotation center of the second shaft 24 to the outer peripheral surface of the output portion side engaging portion 29 changes in the circumferential direction.
- the outer peripheral surface of the output portion side engaging portion 29 is composed of a pair of flat surfaces parallel to each other and a pair of partial cylindrical convex surfaces connecting circumferential ends of the flat surfaces.
- the output-portion-side engaging portion 29 is disposed between the pair of input-portion-side engaging portions 48.
- the output unit 28 further includes a columnar shaft-side protrusion 30 that protrudes in the axial direction from the center of the other end surface in the axial direction of the output unit-side engagement unit 29.
- the pressed surface 45 is formed directly on the inner peripheral surface of the housing 1 and is formed by a cylindrical concave surface centered on the rotation center of the output shaft 2.
- the pressed surface 45 is located on one side in the axial direction of the large-diameter cylindrical portion 19 of the second housing element 7 (on the one side in the axial direction from the portion fitted with the ridge 13 of the first housing element 6). Is formed directly on the inner peripheral surface of the portion where the light is emitted.
- the to-be-pressed surface 45 is formed by fitting a separate annular member inside one axial portion of the large-diameter cylindrical portion 19 of the second housing element 7 and fixing the inner peripheral surface of the annular member. It can also be configured.
- the pressed surface 45 is fixed to the inner peripheral surface of one side in the axial direction of the large-diameter cylindrical portion 19 of the second housing element 7 by sticking, bonding, or the like, and the inner peripheral surface of the friction material.
- a coating layer is formed, and the surface of the coating layer is used.
- the pair of engagement elements 46 are each formed in a substantially semicircular plate shape, and are disposed radially inward of one axial portion of the large-diameter cylindrical portion 19 of the second housing element 7.
- Each of the pair of engaging elements 46 has a pressing surface 49 having a partially cylindrical convex surface on a radially outer surface pressed against the pressed surface 45, and an engaging element to be described later among radial inner surfaces.
- a flat bottom surface 51 is provided in a portion other than the widthwise center portion where the side output engagement portion 50 is formed.
- Each of the pair of engagement elements 46 has a flat side surface 52 perpendicular to the bottom surface 51 on both side surfaces in the width direction.
- the radial direction for each of the engaging elements 46 refers to a direction perpendicular to the bottom surface 51 indicated by an arrow A in FIG. 3, and the width direction for each of the engaging elements 46 is indicated by an arrow B in FIG. Refers to a direction parallel to the bottom surface 51.
- the pressing surface 49 has a radius of curvature equal to or smaller than the radius of curvature of the pressed surface 45. Further, in this example, the pressing surface 49 has a surface property having a larger friction coefficient than other portions of the engagement element 46.
- the pressing surface 49 can be formed directly by the surface of the engaging element 46, or can be formed by a friction material fixed to the engaging element 46 by sticking or bonding.
- Each of the pair of engagement elements 46 further includes an engagement element-side input engagement section 53 and an engagement element-side output engagement section 50.
- the engagement element-side input engagement portion 53 is configured by an input engagement hole that is a through hole that penetrates the radially intermediate portion of the engagement element 46 in the axial direction and has a substantially semicircular opening shape. Have been.
- the engagement element-side input engagement section 53 has a size that allows the input section-side engagement section 48 to be loosely inserted. Specifically, in a state where the input section side engaging section 48 is inserted inside the engaging section side input engaging section 53, the gap between the input section side engaging section 48 and the inner surface of the engaging section side input engaging section 53. Has a gap in the width direction of the engaging element 46 and a gap in the radial direction of the engaging element 46.
- the input-portion-side engaging portion 48 can be displaced in the rotation direction of the input portion 26 (the first shaft 23) with respect to the engaging-portion-side input engaging portion 53 (the engaging member 46).
- the side input engagement portion 53 can be displaced in the radial direction of the engagement element 46 with respect to the input portion side engagement portion 48.
- the engagement element-side output engagement section 50 is configured by a substantially rectangular recess that is recessed radially outward from the center in the width direction of each of the bottom surfaces 51 of the pair of engagement elements 46. .
- the engagement element-side output engagement portion 50 has a size and a shape in which the first half of the output portion-side engagement portion 29 in the short axis direction can be arranged without rattling.
- the engagement element-side output engagement portion 50 has an opening width that is substantially the same (same or slightly larger) as the dimension in the long axis direction of the output portion-side engagement portion 29, and , Has a radial depth slightly smaller than 1 / of the dimension of the output portion side engaging portion 29 in the short axis direction.
- the engagement element-side output engagement portion 50 has a bottom portion that is a flat surface parallel to the bottom surface 51. However, the entire inner surface in the radial direction of the engaging element is a flat bottom surface, and the engaging element-side output engaging portion that engages with the output member-side engaging portion of the output member is formed by the width direction central portion of the bottom surface. You can also.
- the pair of input portion-side engaging portions 48 of the input portion 26 disposed on the other side in the axial direction are connected to the respective engaging-member-side input of the pair of engaging members 46.
- the output portion-side engaging portion 29 of the output portion 28 inserted in the engaging portion 53 in the axial direction and disposed on one side in the axial direction is axially inserted between the pair of engaging element-side output engaging portions 50. Inserted. That is, the pair of engagement elements 46 are arranged so as to sandwich the output section-side engagement section 29 from the outside in the radial direction by the respective engagement element-side output engagement sections 50.
- the axial dimension of the input section side engaging section 48, the axial dimension of the output section side engaging section 29, the axial dimension of the pressed surface 45, and the axial dimension of each of the engaging elements 46 are substantially the same. The same.
- the radially inner surface of the input portion side engaging portion 48 presses the inner surface of the engaging member side input engaging portion 53 radially inward, and separates the pair of engaging members 46 from the pressed surface 45. Move in each direction. That is, based on the engagement with the input portion 26, the pair of engagement members 46 are moved inward in the radial direction that is closer to each other (the engagement members 46 located on the upper side in FIG. Is moved upward). As a result, the bottom surfaces 51 of the pair of engagement elements 46 move toward each other, and the pair of engagement element-side output engagement sections 50 sandwich the output section engagement section 29 of the output section 28 from both sides in the radial direction. .
- the reverse input cutoff clutch 25 of the present example separates the pair of engagement members 46 from the pressed surface 45 regardless of the rotation direction of the first shaft 23. Move in each direction. Then, regardless of the rotation direction of the first shaft 23, the rotation torque input to the first shaft 23 is transmitted to the second shaft 24 via the pair of engagement members 46.
- the corners of the output-portion-side engaging portion 29 press the bottom of the engaging-member-side output engaging portion 50 radially outward, and push the pair of engaging members 46 in a direction approaching the pressed surface 45.
- Move each one That is, the pair of engaging members 46 are moved outward in the radial direction which is away from each other based on the engagement with the output portion 28 (the engaging members 46 located on the upper side in FIG. Is moved downward).
- each pressing surface 49 of the pair of engagement elements 46 is pressed against the pressed surface 45.
- the pressing surface 49 and the pressed surface 45 come into contact with each other in an entire range or a part (for example, a central portion) of the pressing surface 49 in the circumferential direction.
- the rotational torque reversely input to the second shaft 24 is transmitted to the housing 1 fixed to another member (not shown), so that the rotational torque is completely interrupted and is not transmitted to the first shaft 23, or Only a part of the rotational torque reversely input to the second shaft 24 is transmitted to the first shaft 23, and the remainder is cut off.
- the pressing surface 49 does not slide (relatively rotate) with respect to the pressed surface 45.
- the pair of engagement members 46 are stretched between the output-portion-side engagement portion 29 and the large-diameter cylindrical portion 19 of the second housing element 7, and the output portion 28 is locked.
- the pressing surface 49 is The pair of engagement members 46 are stretched between the output-portion-side engagement portion 29 and the large-diameter cylindrical portion 19 of the second housing element 7 so that the output portion 28 is half-locked. I do.
- the pair of engagement members 46 are connected to the output unit-side engagement unit 29 and the engagement unit-side output engagement unit 50.
- the output shaft 2 rotates about the rotation center of the output shaft 2 while sliding the pressing surface 49 with respect to the pressed surface 45 based on the engagement with
- the inner surface of the engaging member-side input engaging portion 53 presses the radial inner surface of the input portion-side engaging portion 48 in the circumferential direction (rotational direction), thereby causing the first shaft 23 to rotate.
- a part of the rotational torque is transmitted to the motor.
- the size of the gap between the input unit 26, the output unit 28, the pressed surface 45, and the pair of engagement elements 46 is adjusted so that the above operation can be performed. I have.
- a normal force Fc acts on the contact portion X between the corner portion of the engaging portion 29 and the bottom of the engaging-member-side output engaging portion 50 in a direction perpendicular to the bottom of the engaging-member-side output engaging portion 50. Also, assuming that the friction coefficient between the output portion side engaging portion 29 and the engaging portion side output engaging portion 50 is ⁇ , the contact portion X has a direction parallel to the bottom of the engaging portion side output engaging portion 50. The frictional force ⁇ Fc acts on.
- the output unit 28 (second shaft 24) is half-locked, and only a part of the rotational torque reversely input to the output unit 28 is transmitted to the input unit 26 (first shaft 23), and the remaining portion is In order to interrupt the transmission, it is necessary that the transmission torque T and the brake torque T ′ satisfy the following equation (8).
- the friction coefficient ⁇ between the output-portion-side engagement portion 29 and the engagement-member-side output engagement portion 50, and the friction between the pressing surface 49 and the pressed surface 45 are the friction coefficient ⁇ between the output-portion-side engagement portion 29 and the engagement-member-side output engagement portion 50, and the friction between the pressing surface 49 and the pressed surface 45.
- the output unit 28 can be half-locked by appropriately setting the wedge angles ⁇ between.
- the output shaft 2 is configured by connecting a first shaft 23 and a second shaft 24 that are coaxially arranged with each other by a reverse input cutoff clutch 25. . Therefore, even if the stator 5 is not energized, the position in the rotation direction of the pulley 39 externally supported on the second shaft 24 (and, consequently, the position of the displacement member connected to the pulley 39 via the belt) is maintained. Alternatively, the resistance to rotating the pulley 39 can be increased.
- the output shaft 2 is configured by connecting a first shaft 23 and a second shaft 24 that are coaxially arranged with each other by a reverse input cutoff clutch 25. . Therefore, in the electric motor with a reverse input cutoff clutch of this example, the input member and the output member of the reverse input cutoff clutch are arranged in parallel with the output shaft of the electric motor, as in the electric actuator described in JP-A-2007-16878. It is easier to reduce the size compared to the structure.
- the second shaft 24 is rotatably supported on the housing 1 by one radial bearing 3 which is a single row deep groove ball bearing capable of supporting a thrust load in addition to a radial load. Therefore, the size of the electric motor with the reverse input cutoff clutch can be further easily reduced.
- FIG. 12 showing the structure of the comparative example in addition to FIG. 1 showing the structure of the present example.
- the second shaft 24 supporting the pulley 39 may be subjected to not only a radial load but also a thrust load
- the second shaft 24 is formed of a housing 1 by a rolling bearing capable of supporting the radial load and the thrust load.
- a rolling bearing capable of supporting the radial load and the thrust load.
- the second shaft 24 is rotatably supported with respect to the housing 1 by a double-row angular contact ball bearing 54 having a back-to-back contact angle as in the comparative example shown in FIG.
- the support rigidity against the thrust load can be increased.
- the double row angular contact ball bearing 54 when used, the axial dimension of the portion that rotatably supports the second shaft 24 increases, which is disadvantageous from the viewpoint of reducing the size of the electric motor with the reverse input cutoff clutch. Become. Further, in the double-row angular contact ball bearing 54, adjustment of the preload in the axial direction is troublesome, and there is a possibility that the assembly cost increases. Further, in order to prevent the leakage of grease sealed in the housing 1 and the invasion of foreign matter into the housing 1 from outside, it is necessary to use a double row angular ball bearing 54 having a sealing function. . However, since the double-row angular ball bearing 54 having the sealing function is expensive, the manufacturing cost of the electric motor with the reverse input cutoff clutch may increase.
- the second shaft 24 is rotatably supported on the housing 1 by one radial bearing 3 which is a single row deep groove ball bearing. Therefore, in the electric motor with the reverse input cutoff clutch of the present example, the axial dimension of the portion that rotatably supports the second shaft 24 can be suppressed as compared with the structure of the comparative example shown in FIG. In addition, downsizing can be further facilitated.
- the radial bearing 3 which is a single row deep groove ball bearing does not need to adjust the preload in the axial direction unlike the double row angular ball bearing 54 of the comparative example, and further has a single row deep groove ball bearing having a sealing function. Is less expensive than the double row angular contact ball bearing 54 having a sealing function. Therefore, the electric motor with the reverse input cutoff clutch of the present example can reduce the assembly cost and the manufacturing cost as compared with the structure of the comparative example.
- the bearing 44 a on one side in the axial direction has a function of rotatably supporting one end of the first shaft 23 on one side in the axial direction with respect to the housing 1, and the input section 26 of the reverse input cutoff clutch 25.
- the shaft-side concave portion 27 formed on one axial end surface of the first shaft 23 and the shaft-side convex portion 30 formed on the other axial end portion of the second shaft 24 are mounted. Mated. For this reason, even if the second shaft 24 is rotatably supported by the radial bearing 3 which is a single row deep groove ball bearing with respect to the housing 1, the second shaft 24 rattles, that is, with the support shaft 31 as a center. This can prevent the swing of the second shaft 24 from becoming excessively large.
- the axial dimension can be reduced and the number of parts can be reduced.
- the reverse input cutoff clutch 25 converts each rotation of the input section 26 and the output section 28 into a radial movement of the engagement element 46. Then, by converting the rotation of the input section 26 and the output section 28 into the radial movement of the engagement element 46, the engagement element 46 is engaged with the output section 28 located radially inside the engagement element 46. Alternatively, the engaging element 46 is pressed against the pressed surface 45 located radially outside the engaging element 46. As described above, the reverse input cutoff clutch 25 of the present example applies a rotational torque from the input unit 26 to the output unit 28 based on the radial movement of the engagement element 46 controlled by the rotation of the input unit 26 and the output unit 28.
- the reverse input cutoff clutch 25 Axial dimension can be shortened. From this aspect, the size of the electric motor with the reverse input cutoff clutch can be easily reduced.
- the engagement element 46 has both a function of transmitting the rotational torque input to the input section 26 to the output section 28 and a function of locking or semi-locking the output section 28. For this reason, the number of components of the reverse input cutoff clutch 25 can be reduced, and the operation is stabilized as compared to a case where separate members are provided with a function of transmitting the rotational torque and a function of locking or semi-locking. be able to. For example, when the function of transmitting the rotational torque and the function of locking or semi-locking are provided in different members, the timing of releasing the lock or semi-lock and the timing of starting the transmission of the rotational torque may be shifted.
- an engagement ridge 38 extending in the axial direction is formed on the fitting shaft portion 37 of the second shaft 24, and the engagement ridge 38 and the pulley
- the pulley 39 and the second shaft 24 are coupled so as to be able to transmit torque by engaging the engagement concave groove 41 of 39.
- other structures can be adopted as long as the pulley 39 and the second shaft 24 can be coupled so as to transmit torque.
- a male spline portion 55 is formed on the outer peripheral surface of the fitting shaft portion 37, and the male spline portion 55 and the female spline portion formed on the inner peripheral surface of the pulley 39 are combined. Can be engaged.
- the pulley 39 for extending the endless belt over the fitting shaft portion 37 of the second shaft 24 is externally fitted and supported.
- the invention is not limited thereto, and for example, a gear 56 as shown in FIG. 14A or a sprocket 57 as shown in FIG. 14B can be used.
- the housing positioning means for positioning the first housing element 6 and the second housing element 7 in the radial direction is provided by the outer peripheral surface of the ridge 13 of the first housing element 6 and the second housing element.
- the large-diameter cylindrical portion 19 of the housing element 7 is formed by an uneven fitting portion with the inner peripheral surface of the other end in the axial direction.
- the housing positioning means is not limited to this.
- a pin portion that one of the first housing element 6 and the second housing element 7 has at a plurality of positions in the circumferential direction may be replaced with the other housing element. Can be inserted into the concave holes at a plurality of positions in the circumferential direction without rattling in the radial direction.
- FIG. 15 shows a second example of the embodiment of the present invention.
- the second shaft 24a includes a cylindrical support recess 58 at the center of the other end surface in the axial direction.
- a pin 59 is press-fitted into the support recess 58.
- a portion of the pin 59 protruding from the other end surface in the axial direction of the second shaft 24 a is fitted in the shaft-side concave portion 27 of the first shaft 23 without looseness in the radial direction (inlay fitting). By doing so, coaxiality between the first shaft 23 and the second shaft 24a is ensured.
- FIG. 16 shows a third example of the embodiment of the present invention.
- the second shaft 24a has a cylindrical support recess 58 at the center of the end face on the other side in the axial direction, and a pin 59 press-fitted into the support recess 58.
- the part of the pin 59 protruding from the other end face in the axial direction of the second shaft 24a is inserted into the shaft-side recess 27a of the first shaft 23a, and into the portion between the pin 59 and the shaft-side recess 27a,
- a plurality of needles (rollers) 60 are arranged, and a radial needle bearing 61 is arranged at the corresponding portion.
- the resistance of the second shaft 24a relative to the first shaft 23a relative to the first shaft 23a is reduced as compared with the structure of the second example of the embodiment. Can be suppressed.
- the configuration and operation and effect of the other parts are the same as in the first and second examples of the embodiment.
- the first shaft 23b is formed by connecting the shaft main body 62 and the input member 63 in the axial direction.
- the shaft body 62 is rotatably supported on the other axial side inside the first housing element 6 of the housing 1 by a pair of bearings 44a, 44b.
- the shaft main body 62 includes a fitting shaft 64 at one end in the axial direction, and a radially inner side cutout 65 at one circumferential position of the fitting shaft 64.
- the input member 63 includes the input unit 26.
- the input member 63 includes a fitting hole 66 that penetrates the center of the input shaft portion 47 of the input portion 26 in the axial direction, and an outer-diameter-side cutout 67 formed at one circumferential position of the fitting hole 66. And further comprising:
- the fitting shaft portion 64 is fitted inside the fitting hole 66, and the phases of the inner side cutout portion 65 and the outer side cutout portion 67 in the circumferential direction are matched, so that the inner side cutout portion 65 is formed.
- the first shaft 23b is formed by press-fitting the wedge piece 68 into the outer diameter side cutout portion 67, thereby connecting the shaft main body 62 and the input member 63 in the axial direction.
- the first shaft 23b of the present example does not have the input portion 26 directly formed at one end in the axial direction, unlike the first shaft 23 of the first example of the embodiment. Therefore, a general-purpose product can be used as the first shaft 23b instead of a dedicated product.
- the configuration and operation and effect of the other parts are the same as those of the first example of the embodiment.
- [Fifth Example of Embodiment] 20 and 21 show a fifth example of the embodiment of the present invention.
- the second shaft 24 has a fitting shaft portion 37 at one end in the axial direction, and a pulley 39 is externally attached to the fitting shaft portion 37.
- the fitting is supported. Power is transmitted to the displacement member by passing an endless belt over the pulley 39.
- the second shaft 24b has a male screw groove 69 formed in a spiral shape on the outer peripheral surface of one axial side portion.
- a nut 70 which is a displacement member, is arranged around one axial portion of the second shaft 24b.
- the nut 70 has a female thread groove on the inner peripheral surface.
- the feed screw mechanism 71 is configured by arranging a plurality of balls between the male screw groove 69 and the female screw groove.
- the electric motor with a reverse input cutoff clutch of this example can also be easily reduced in size for the same reason as the structure of the first example of the embodiment.
- the configuration and operation and effect of the other parts are the same as those of the first example of the embodiment.
- FIG. 22 and FIG. 23 show a sixth example of the embodiment of the present invention.
- the inner raceway 80 of the bearing 44c that rotatably supports one end of the first shaft 23c in the axial direction with respect to the main body 8 of the housing 1 is provided at the axially intermediate portion of the first shaft 23c. It is formed directly on the outer peripheral surface of the existing middle diameter portion 72a.
- a step surface 77 is formed on the first shaft 23 for abutting the end surface on one side in the axial direction of the inner ring 74a of the bearing 44a on one side in the axial direction.
- the axial dimension of the first shaft 23c can be reduced as compared with the first shaft 23 of the first example of the embodiment because the step surface 77 does not need to be formed.
- the size of the motor can be easily reduced.
- the bearing 44c on one side in the axial direction of the present example does not have an inner ring, it is not necessary to adjust the axial position of the inner ring with respect to the first shaft 23c for adjusting the preload applied to the bearing 44c. It is possible to prevent the rotation accuracy from being lowered due to the direction position adjustment.
- the configuration and operation and effect of the other parts are the same as those of the first example of the embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Braking Arrangements (AREA)
Abstract
Description
前記出力シャフトは、前記ハウジングの内側に回転自在に支持された第1のシャフトと、該第1のシャフトと同軸に配置された第2のシャフトと、前記ハウジングの内側に配置され、かつ、前記第1のシャフトと前記第2のシャフトとを接続する逆入力遮断クラッチとを有する。
前記逆入力遮断クラッチは、前記第1のシャフトに回転トルクが入力された場合には、該第1のシャフトに入力された回転トルクを前記第2のシャフトに伝達し、かつ、前記第2のシャフトに回転トルクが逆入力された場合には、該第2のシャフトに逆入力された回転トルクを完全に遮断するか、または、前記第2のシャフトに逆入力された回転トルクの一部を前記第1のシャフトに伝達し残部を遮断する機能を有する。
前記1個のラジアル軸受は、前記第2のシャフトを、前記ハウジングに対し回転自在に支持する。
前記回転子は、前記第1のシャフトの周囲に配置され、かつ、該第1のシャフトと一体的に回転する。
前記固定子は、前記回転子の周囲に配置され、かつ、前記ハウジングに対して支持固定される。
被押圧面と、
前記第1のシャフトと一体的に回転する入力部と、
前記入力部と同軸に配置され、かつ、前記第2のシャフトと一体的に回転する出力部と、
前記入力部に回転トルクが入力された場合には、前記入力部との係合に基づき前記被押圧面から離れる方向に移動し、前記出力部と係合することにより、前記入力部に入力された回転トルクを前記出力部に伝達し、かつ、前記出力部に回転トルクが逆入力された場合には、前記出力部との係合に基づき前記被押圧面に近づく方向に移動して前記被押圧面に接触することにより、前記出力部に逆入力された回転トルクを完全に遮断するか、または、前記出力部に逆入力された回転トルクの一部を前記入力部に伝達し残部を遮断する、係合子と、
を備えることができる。
図1~図11は、本発明の実施の形態の第1例を示している。本例の逆入力遮断クラッチ付電動モータは、ハウジング1と、出力シャフト2と、1個のラジアル軸受3と、回転子4と、固定子5とを備える。
逆入力遮断クラッチ25は、入力部26と、出力部28と、被押圧面45と、1対の係合子46とを備える。
次に、逆入力遮断クラッチ25の動作について説明する。
まず、入力部26(第1のシャフト23)に回転トルクが入力された場合について説明する。本例の電動モータでは、固定子5に通電し、固定子5の内側で回転子4に回転方向の力を付与することにより、出力シャフト2の第1のシャフト23に回転トルクを入力する。第1のシャフト23に回転トルクが入力されると、図7に示すように、係合子側入力係合部53の内側で、入力部26の入力部側係合部48が第1のシャフト23の回転方向(図7の例では時計方向)に回転する。すると、入力部側係合部48の径方向内側面が係合子側入力係合部53の内面を径方向内方に向けて押圧し、1対の係合子46を、被押圧面45から離れる方向にそれぞれ移動させる。つまり、1対の係合子46を、入力部26との係合に基づき、互いに近づく方向である径方向内方に(図7の上側に位置する係合子46を下方に、図7の下側に位置する係合子46を上方に)それぞれ移動させる。これにより、1対の係合子46の底面51が互いに近づく方向に移動し、1対の係合子側出力係合部50が出力部28の出力部側係合部29を径方向両側から挟持する。すなわち、出力部28を、出力部側係合部29の長軸方向が係合子46の底面51と平行になるように回転させつつ、出力部側係合部29と1対の係合子側出力係合部50とをがたつきなく係合させる。したがって、第1のシャフト23の入力部26に入力された回転トルクは、1対の係合子46を介して、第2のシャフト24の出力部28に伝達され、第2のシャフト24の嵌合軸部37に外嵌されたプーリ39から出力される。
次に、出力部28(第2のシャフト24)に回転トルクが逆入力された場合を説明する。プーリ39に、ベルトなどを介して、回転トルクを伝達可能に接続された変位部材に、外部からの力が作用すると、プーリ39を介して第2のシャフト24に回転トルクが逆入力される。第2のシャフト24に回転トルクが逆入力されると、図8に示すように、出力部28の出力部側係合部29が、1対の係合子側出力係合部50同士の内側で、第2のシャフト24の回転方向(図8の例では時計方向)に回転する。すると、出力部側係合部29の角部が係合子側出力係合部50の底部を径方向外方に向けて押圧し、1対の係合子46を、被押圧面45に近づく方向にそれぞれ移動させる。つまり、1対の係合子46を、出力部28との係合に基づき、互いに離れる方向である径方向外方に(図8の上側に位置する係合子46を上方に、図8の下側に位置する係合子46を下方に)それぞれ移動させる。これにより、1対の係合子46のそれぞれの押圧面49を、被押圧面45に対して押し付ける。この際、押圧面49と被押圧面45とは、押圧面49の周方向に関する全範囲または一部(例えば中央部)で接触する。この結果、第2のシャフト24に逆入力された回転トルクは、図示しない他の部材に固定されたハウジング1に伝わることで、完全に遮断されて第1のシャフト23に伝達されないか、または、第2のシャフト24に逆入力された回転トルクの一部のみが第1のシャフト23に伝達され残部が遮断される。
Ft=Fc・sinθ+μFc・cosθ ・・・(1)
このため、法線力Fcは、接線力Ftを用いて、次の(2)式により表される。
Fc=Ft/(sinθ+μ・cosθ) ・・・(2)
T=r・Ft ・・・(3)
T´=μ´RFc ・・・(4)
したがって、より大きなブレーキ力を得るには、摩擦係数μ´、距離R、法線力Fcを大きくすれば良いことが分かる。
T<T´ ・・・(5)
また、上記(5)式に上記(1)~(4)式を代入すると次の(6)式が得られる。
μ´R/(sinθ+μ・cosθ)>r ・・・(6)
上記(6)式からは、押圧面49と被押圧面45との間の摩擦係数μ´を大きくすれば、距離Rを小さくしても、出力部28をロックさせられることが分かる。
R>10r(sinθ+0.1cosθ) ・・・(7)
上記(7)式からは、出力部28の回転中心Oから当接部Xまでの距離rと、出力部28の回転中心Oから当接部Yまでの距離Rと、接線力Ftの作用線の方向と係合子側出力係合部50の底面との間のくさび角θとを適切に設定することで、出力部28をロックさせられることが分かる。
T>T´ ・・・(8)
また、上記(6)式からも明らかな通り、出力部側係合部29と係合子側出力係合部50との間の摩擦係数μ、押圧面49と被押圧面45との間の摩擦係数μ´、回転中心Oから当接部Xまでの距離r、回転中心Oから当接部Yまでの距離R、接線力Ftの作用線の方向と係合子側出力係合部50の底面との間のくさび角θをそれぞれ適切に設定することで、出力部28を半ロックさせることができる。
図15は、本発明の実施の形態の第2例を示している。本例では、第2のシャフト24aは、軸方向他側の端面の中央部に、円筒状の支持凹部58を備える。支持凹部58には、ピン59が圧入されている。本例では、ピン59のうち、第2のシャフト24aの軸方向他側の端面から突出した部分を、第1のシャフト23のシャフト側凹部27に径方向のがたつきなく内嵌(インロー嵌合)することにより、第1のシャフト23と第2のシャフト24aとを同軸性を確保している。
図16は、本発明の実施の形態の第3例を示している。本例では、第2のシャフト24aは、軸方向他側の端面の中央部に、円筒状の支持凹部58を備え、かつ、支持凹部58に圧入されたピン59を備える。ピン59のうち、第2のシャフト24aの軸方向他側の端面から突出した部分を、第1のシャフト23aのシャフト側凹部27aに挿入し、ピン59とシャフト側凹部27aとの間部分に、複数個のニードル(ころ)60を配置して、当該部分にラジアルニードル軸受61を配置している。
図17~図19は、本発明の実施の形態の第4例を示している。本例では、第1のシャフト23bは、シャフト本体62と入力部材63とを軸方向に結合してなる。シャフト本体62は、軸方向他側部分を、1対の軸受44a、44bにより、ハウジング1の第1のハウジング素子6の内側に回転自在に支持されている。また、シャフト本体62は、軸方向片側の端部に、嵌合軸部64を備え、かつ、該嵌合軸部64の円周方向1箇所に内径側切り欠き部65を備える。また、入力部材63は、入力部26を備える。入力部材63は、入力部26の入力軸部47の中央部を軸方向に貫通する嵌合孔66と、該嵌合孔66の円周方向1箇所に形成された外径側切り欠き部67とをさらに備える。
図20および図21は、本発明の実施の形態の第5例を示している。実施の形態の第1例の逆入力遮断クラッチでは、第2のシャフト24は、軸方向片側の端部に嵌合軸部37を有し、かつ、該嵌合軸部37にプーリ39を外嵌支持している。そして、プーリ39に無端ベルトをかけ渡すことにより、変位部材に動力を伝達している。
図22および図23は、本発明の実施の形態の第6例を示している。本例では、第1のシャフト23cの軸方向片側の端部を、ハウジング1の本体部8に対し回転自在に支持する軸受44cの内輪軌道80を、第1のシャフト23cの軸方向中間部に存在する中径部72aの外周面に直接形成している。
2 出力シャフト
3 ラジアル軸受
4 回転子
5 固定子
6 第1のハウジング素子
7 第2のハウジング素子
8 本体部
9 蓋部
10 円筒部
11 円輪部
12 保持円筒部
13 突条
14 第1のフランジ部
15 円孔
16 底板部
17 保持円筒部
18 小径円筒部
19 大径円筒部
20 側板部
21 第2のフランジ部
22 ねじ孔
23、23a、23b、23c 第1のシャフト
24、24a、24b 第2のシャフト
25 逆入力遮断クラッチ
26 入力部
27、27a シャフト側凹部
28 出力部
29 出力部側係合部
30 シャフト側凸部
31 支持軸部
32 外輪
33 外径側フランジ部
34a、34b 止め輪
35 内輪
36 内径側フランジ部
37 嵌合軸部
38 係合突条
39 プーリ
40 嵌合孔
41 係合凹溝
42 通孔
43 ねじ
44a、44b、44c 軸受
45 被押圧面
46 係合子
47 入力軸部
48 入力部側係合部
49 押圧面
50 係合子側出力係合部
51 底面
52 側面
53 係合子側入力係合部
54 複列アンギュラ玉軸受
55 雄スプライン部
56 歯車
57 スプロケット
58 支持凹部
59 ピン
60 ニードル
61 ラジアルニードル軸受
62 シャフト本体
63 入力部材
64 嵌合軸部
65 内径側切り欠き部
66 嵌合孔
67 外径側切り欠き部
68 くさび片
69 雄ねじ溝
70 ナット
71 送りねじ機構
72、72a 中径部
73 小径部
74a、74b 内輪
75a、75b 外輪
76a、76b 転動体
77 段差面
78 内向フランジ
79 止め輪
80 内輪軌道
Claims (13)
- ハウジングと、
前記ハウジングの内側に回転自在に支持された第1のシャフトと、該第1のシャフトと同軸に配置された第2のシャフトと、前記ハウジングの内側に配置され、かつ、前記第1のシャフトと前記第2のシャフトとを接続する逆入力遮断クラッチとを有する出力シャフトと、
前記第2のシャフトを、前記ハウジングに対し回転自在に支持する、1個のラジアル軸受と、
前記第1のシャフトの周囲に配置され、かつ、該第1のシャフトと一体的に回転する回転子と、および、
前記回転子と同軸に配置され、かつ、前記ハウジングに対して支持固定された固定子と、
を備え、
前記逆入力遮断クラッチは、前記第1のシャフトに回転トルクが入力された場合には、該第1のシャフトに入力された回転トルクを前記第2のシャフトに伝達し、かつ、前記第2のシャフトに回転トルクが逆入力された場合には、該第2のシャフトに逆入力された回転トルクを完全に遮断するか、または、前記第2のシャフトに逆入力された回転トルクの一部を前記第1のシャフトに伝達し残部を遮断する機能を有する、
逆入力遮断クラッチ付電動モータ。 - 前記1個のラジアル軸受が、ラジアル転がり軸受からなる、請求項1に記載の逆入力遮断クラッチ付電動モータ。
- 前記1個のラジアル軸受が、単列深溝玉軸受からなる、請求項2に記載の逆入力遮断クラッチ付電動モータ。
- 前記第1のシャフトと前記第2のシャフトとのうちの一方のシャフトが、軸方向端面の中央部に円筒状のシャフト側凹部を有し、前記第1のシャフトと前記第2のシャフトとのうちの他方のシャフトが、前記シャフト側凹部に相対回転を可能に、かつ、径方向に関するがたつきなく内嵌されるシャフト側凸部を有する、請求項1に記載の逆入力遮断クラッチ付電動モータ。
- 前記第1のシャフトと前記第2のシャフトとのうちの一方のシャフトが、軸方向端面の中央部に円筒状のシャフト側凹部を有し、前記第1のシャフトと前記第2のシャフトとのうちの他方のシャフトが、前記シャフト側凹部に挿入されるシャフト側凸部を有しており、かつ、前記出力シャフトが、前記シャフト側凹部の内周面と前記シャフト側凸部の外周面との間に配置された転がり軸受を有する、請求項1に記載の逆入力遮断クラッチ付電動モータ。
- 前記ハウジングが、前記固定子を収納する第1のハウジング素子と、前記逆入力遮断クラッチを収納する第2のハウジング素子と、前記第1のハウジング素子と前記第2のハウジング素子との径方向に関する位置決めを図るためのハウジング位置決め手段とを備える、請求項1に記載の逆入力遮断クラッチ付電動モータ。
- 前記ハウジング位置決め手段が、前記第1のハウジング素子と前記第2のハウジング素子とのうちの一方のハウジング素子が有するハウジング側凹部と、前記第1のハウジング素子と前記第2のハウジング素子とのうちの他方のハウジング素子が有するハウジング側凸部との凹凸嵌合部により構成される、請求項6に記載の逆入力遮断クラッチ付電動モータ。
- 前記逆入力遮断クラッチは、
被押圧面と、
前記第1のシャフトと一体的に回転する入力部と、
前記入力部と同軸に配置され、かつ、前記第2のシャフトと一体的に回転する出力部と、
前記入力部に回転トルクが入力された場合には、前記入力部との係合に基づき前記被押圧面から離れる方向に移動し、前記出力部と係合することにより、前記入力部に入力された回転トルクを前記出力部に伝達し、かつ、前記出力部に回転トルクが逆入力された場合には、前記出力部との係合に基づき前記被押圧面に近づく方向に移動して前記被押圧面に接触することにより、前記出力部に逆入力された回転トルクを完全に遮断するか、または、前記出力部に逆入力された回転トルクの一部を前記入力部に伝達し残部を遮断する、係合子と、
を備える、請求項1に記載の逆入力遮断クラッチ付電動モータ。 - 前記係合子が、前記被押圧面と前記出力部に備えられた出力部側係合部との間に配置されており、前記入力部のうち、回転中心から径方向に外れた部分に備えられた入力部側係合部を、前記係合子に備えられた係合子側入力係合部に、前記被押圧面に対する遠近移動を可能に係合させている、請求項8に記載の逆入力遮断クラッチ付電動モータ。
- 前記係合子は、前記出力部側係合部を径方向外側から挟むように配置された複数の係合子により構成される、請求項9に記載の逆入力遮断クラッチ付電動モータ。
- 前記係合子は、それぞれの底面により前記出力部側係合部を挟むように配置された1対の係合子により構成される、請求項9に記載の逆入力遮断クラッチ付電動モータ。
- 前記入力部が、前記第1のシャフトと一体的に形成されており、かつ、前記出力部が、前記第2のシャフトと一体的に形成されている、請求項8に記載の逆入力遮断クラッチ付電動モータ。
- 前記ハウジングが、内周面に前記被押圧面を有する、請求項8に記載の逆入力遮断クラッチ付電動モータ。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201980059988.XA CN112703331B (zh) | 2018-09-12 | 2019-09-11 | 带反向输入切断离合器的电动马达 |
| EP19859177.8A EP3851694A4 (en) | 2018-09-12 | 2019-09-11 | ELECTRIC MOTOR WITH CLUTCH TO SHUT DOWN ON OPPOSITE INPUT |
| JP2020546053A JP7290155B2 (ja) | 2018-09-12 | 2019-09-11 | 逆入力遮断クラッチ付電動モータ |
| US17/274,869 US11722035B2 (en) | 2018-09-12 | 2019-09-11 | Electric motor with reverse input cutoff clutch |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-170564 | 2018-09-12 | ||
| JP2018170564 | 2018-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020054763A1 true WO2020054763A1 (ja) | 2020-03-19 |
Family
ID=69778355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/035708 Ceased WO2020054763A1 (ja) | 2018-09-12 | 2019-09-11 | 逆入力遮断クラッチ付電動モータ |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11722035B2 (ja) |
| EP (1) | EP3851694A4 (ja) |
| JP (1) | JP7290155B2 (ja) |
| CN (1) | CN112703331B (ja) |
| WO (1) | WO2020054763A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022163617A1 (ja) * | 2021-01-28 | 2022-08-04 | 日本精工株式会社 | 逆入力遮断クラッチ付電動モータ |
| WO2022168764A1 (ja) | 2021-02-08 | 2022-08-11 | 日本精工株式会社 | 逆入力遮断クラッチ |
| JP2023022882A (ja) * | 2021-08-04 | 2023-02-16 | 日本精工株式会社 | 逆入力遮断クラッチ |
| WO2023195203A1 (ja) * | 2022-04-04 | 2023-10-12 | 日本精工株式会社 | 逆入力遮断クラッチ |
| JP7736228B1 (ja) * | 2024-05-17 | 2025-09-09 | 日本精工株式会社 | 逆入力遮断クラッチ |
| WO2025238930A1 (ja) * | 2024-05-17 | 2025-11-20 | 日本精工株式会社 | 逆入力遮断クラッチ |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116710670A (zh) * | 2021-11-15 | 2023-09-05 | 日本精工株式会社 | 反向输入断开离合器 |
| KR20230134666A (ko) * | 2022-03-15 | 2023-09-22 | 현대자동차주식회사 | 백 드라이브를 방지하는 클러치 |
| CN117128258A (zh) * | 2023-10-27 | 2023-11-28 | 万向钱潮股份公司 | 一种凸轮式离合器及监测方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004084918A (ja) | 2002-02-20 | 2004-03-18 | Nsk Ltd | リニアアクチュエータ |
| JP2006042465A (ja) * | 2004-07-26 | 2006-02-09 | Toyota Motor Corp | ブレーキ機構付きモータ |
| JP2007016878A (ja) | 2005-07-07 | 2007-01-25 | Ntn Corp | 逆入力遮断クラッチ |
| JP2007232095A (ja) | 2006-03-01 | 2007-09-13 | Ntn Corp | 逆入力防止クラッチ |
| JP2011027252A (ja) * | 2009-06-23 | 2011-02-10 | Asmo Co Ltd | クラッチ及びモータ |
| JP2013046522A (ja) * | 2011-08-25 | 2013-03-04 | Asmo Co Ltd | モータ |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3587796A (en) * | 1969-09-15 | 1971-06-28 | Duff Norton Co | Self-locking transmission mechanism |
| FR2566868B1 (fr) * | 1984-06-29 | 1990-01-05 | Paris & Du Rhone | Reducteur epicycloidal a blocage centrifuge |
| US6288464B1 (en) * | 1999-07-13 | 2001-09-11 | Asmo Co., Ltd. | Motor having worm gear mechanism |
| JP4806264B2 (ja) * | 2005-06-08 | 2011-11-02 | Ntn株式会社 | 逆入力防止クラッチ |
| JP2009008247A (ja) * | 2007-02-28 | 2009-01-15 | Ntn Corp | 回転方向切替クラッチユニット |
| JP2010276166A (ja) | 2009-05-29 | 2010-12-09 | Jtekt Corp | 逆入力遮断クラッチ、伝達比可変機構、および車両用操舵装置 |
| US9035476B2 (en) * | 2011-09-12 | 2015-05-19 | Jtekt Corporation | Power generating device |
| WO2013153586A1 (ja) * | 2012-04-13 | 2013-10-17 | 日本精工株式会社 | 回転伝達機構及び電動パワーステアリング装置 |
| JP5959556B2 (ja) * | 2014-03-12 | 2016-08-02 | 三菱電機株式会社 | エンジン始動装置 |
| US9821833B2 (en) * | 2014-11-10 | 2017-11-21 | Nsk Ltd. | Impact absorbing steering apparatus |
| JP2017020612A (ja) | 2015-07-14 | 2017-01-26 | Ntn株式会社 | 逆入力遮断クラッチ |
-
2019
- 2019-09-11 EP EP19859177.8A patent/EP3851694A4/en active Pending
- 2019-09-11 WO PCT/JP2019/035708 patent/WO2020054763A1/ja not_active Ceased
- 2019-09-11 US US17/274,869 patent/US11722035B2/en active Active
- 2019-09-11 CN CN201980059988.XA patent/CN112703331B/zh active Active
- 2019-09-11 JP JP2020546053A patent/JP7290155B2/ja active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004084918A (ja) | 2002-02-20 | 2004-03-18 | Nsk Ltd | リニアアクチュエータ |
| JP2006042465A (ja) * | 2004-07-26 | 2006-02-09 | Toyota Motor Corp | ブレーキ機構付きモータ |
| JP2007016878A (ja) | 2005-07-07 | 2007-01-25 | Ntn Corp | 逆入力遮断クラッチ |
| JP2007232095A (ja) | 2006-03-01 | 2007-09-13 | Ntn Corp | 逆入力防止クラッチ |
| JP2011027252A (ja) * | 2009-06-23 | 2011-02-10 | Asmo Co Ltd | クラッチ及びモータ |
| JP2013046522A (ja) * | 2011-08-25 | 2013-03-04 | Asmo Co Ltd | モータ |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4123192A4 (en) * | 2021-01-28 | 2023-11-29 | NSK Ltd. | ELECTRIC MOTOR WITH LOCKING CLUTCH FOR REVERSE GEAR |
| JPWO2022163617A1 (ja) * | 2021-01-28 | 2022-08-04 | ||
| US12278545B2 (en) | 2021-01-28 | 2025-04-15 | Nsk Ltd. | Electric motor with reverse input cutoff clutch |
| CN115427702B (zh) * | 2021-01-28 | 2026-04-14 | 日本精工株式会社 | 带反向输入切断离合器的电动马达 |
| CN115427702A (zh) * | 2021-01-28 | 2022-12-02 | 日本精工株式会社 | 带反向输入切断离合器的电动马达 |
| WO2022163617A1 (ja) * | 2021-01-28 | 2022-08-04 | 日本精工株式会社 | 逆入力遮断クラッチ付電動モータ |
| JP7243926B2 (ja) | 2021-01-28 | 2023-03-22 | 日本精工株式会社 | 逆入力遮断クラッチ付電動モータ |
| CN116635642A (zh) * | 2021-02-08 | 2023-08-22 | 日本精工株式会社 | 反向输入切断离合器 |
| JP7243927B2 (ja) | 2021-02-08 | 2023-03-22 | 日本精工株式会社 | 逆入力遮断クラッチ |
| JPWO2022168764A1 (ja) * | 2021-02-08 | 2022-08-11 | ||
| KR20230104680A (ko) * | 2021-02-08 | 2023-07-10 | 닛본 세이고 가부시끼가이샤 | 역입력 차단 클러치 |
| CN116635642B (zh) * | 2021-02-08 | 2026-03-17 | 日本精工株式会社 | 反向输入切断离合器 |
| WO2022168764A1 (ja) | 2021-02-08 | 2022-08-11 | 日本精工株式会社 | 逆入力遮断クラッチ |
| KR102866204B1 (ko) | 2021-02-08 | 2025-09-29 | 닛본 세이고 가부시끼가이샤 | 역입력 차단 클러치 |
| EP4265934A4 (en) * | 2021-02-08 | 2024-07-17 | NSK Ltd. | LOCKING CLUTCH WITH REVERSE INPUT |
| EP4276327A4 (en) * | 2021-02-08 | 2024-07-17 | NSK Ltd. | REVERSE ENTRY LOCK-UP CLUTCH |
| US12117051B2 (en) | 2021-02-08 | 2024-10-15 | Nsk Ltd. | Reverse-input blocking clutch |
| JP2023022882A (ja) * | 2021-08-04 | 2023-02-16 | 日本精工株式会社 | 逆入力遮断クラッチ |
| JP7501796B2 (ja) | 2022-04-04 | 2024-06-18 | 日本精工株式会社 | 逆入力遮断クラッチ |
| JPWO2023195203A1 (ja) * | 2022-04-04 | 2023-10-12 | ||
| WO2023195203A1 (ja) * | 2022-04-04 | 2023-10-12 | 日本精工株式会社 | 逆入力遮断クラッチ |
| JP7736228B1 (ja) * | 2024-05-17 | 2025-09-09 | 日本精工株式会社 | 逆入力遮断クラッチ |
| WO2025238930A1 (ja) * | 2024-05-17 | 2025-11-20 | 日本精工株式会社 | 逆入力遮断クラッチ |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7290155B2 (ja) | 2023-06-13 |
| EP3851694A1 (en) | 2021-07-21 |
| EP3851694A4 (en) | 2022-06-01 |
| CN112703331A (zh) | 2021-04-23 |
| US11722035B2 (en) | 2023-08-08 |
| CN112703331B (zh) | 2022-11-04 |
| JPWO2020054763A1 (ja) | 2021-09-09 |
| US20220060084A1 (en) | 2022-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7290155B2 (ja) | 逆入力遮断クラッチ付電動モータ | |
| JP6539524B2 (ja) | 駆動力伝達機構 | |
| US8151959B2 (en) | One-way clutch unit | |
| US20130168192A1 (en) | Electric linear motion actuator and electric disk brake system | |
| JP6058597B2 (ja) | ピンを利用するフリータイプ双方向クラッチ | |
| WO2016080276A1 (ja) | 駆動力伝達機構 | |
| JP5941876B2 (ja) | フリータイプ双方向クラッチ | |
| JP7243926B2 (ja) | 逆入力遮断クラッチ付電動モータ | |
| US20210277983A1 (en) | Electric actuator | |
| JP2025042302A (ja) | 逆入力遮断クラッチ | |
| JP4513158B2 (ja) | 摩擦ローラ式変速機 | |
| WO2023276714A1 (ja) | クラッチアクチュエータ | |
| JP6520056B2 (ja) | 無段変速装置 | |
| WO2017164400A1 (ja) | ブレーキ付モータおよびアクチュエータ | |
| JP2019065943A (ja) | 小型構造の逆入力遮断クラッチ | |
| JP2025042297A (ja) | 逆入力遮断クラッチ | |
| JP4259705B2 (ja) | カム機構とこれを用いたクラッチ装置 | |
| JP2017175850A (ja) | アクチュエータ | |
| WO2020022043A1 (ja) | クラッチ、及びモータ | |
| JP5005623B2 (ja) | 逆入力遮断クラッチ | |
| JP2025020933A (ja) | 逆入力遮断クラッチ | |
| JP7152913B2 (ja) | 電動式直動アクチュエータ及び電動ブレーキ装置 | |
| JP2007333069A (ja) | 逆入力遮断クラッチ | |
| JP2018074833A (ja) | 電動アクチュエータ用回転駆動源および電動アクチュエータ | |
| JP2017184602A (ja) | ブレーキ付モータ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19859177 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020546053 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2019859177 Country of ref document: EP Effective date: 20210412 |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 2019859177 Country of ref document: EP |