JP2015074312A - Reaction force output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaction force output device which prevents rotation friction on a motor side from acting on a reaction force output shaft side when reaction force control is not performed by a motor, and accordingly, does not give discomfort to an operator.SOLUTION: A reaction force output device includes a motor 12 generating reaction force and a reaction force output shaft 13 for transmitting the reaction force to an operation pedal. Between the motor 12 and the reaction force output shaft 13, a clutch mechanism for making a state of a rotary shaft 12a of the motor 12 and the reaction force output shaft 13 a connection state when the motor 12 is driven, and making the state of the rotary shaft 12a of the motor 12 and the reaction force output shaft 13 a disconnected state when the motor 12 is not driven, is interposed.

Description

  The present invention relates to a reaction force output device that outputs a reaction force to an operation pedal such as an accelerator pedal of a vehicle.

In recent years, in order to prevent the accelerator pedal from being depressed more than necessary when the vehicle is starting or running, an accelerator pedal device has been developed that applies a reaction force to the accelerator pedal according to the depressed state (for example, patents). Reference 1).
The accelerator pedal device described in Patent Document 1 includes a housing that pivotally supports the base end of a pedal arm, a return spring for returning the pedal arm to an initial position, a motor for creating a reaction force, A transmission lever for transmitting the rotation of the motor to the pedal arm is incorporated. In this accelerator pedal device, the motor is controlled by the control device to an output corresponding to the depression state of the accelerator pedal, and the output is applied to the pedal arm through the transmission lever.

JP 2010-111379 A

  However, the accelerator pedal device described in Patent Document 1 has a structure in which a shaft of a transmission lever for outputting a reaction force to a pedal arm and a rotation shaft of a motor that is a drive source are directly connected to each other. Not only during reaction force control (when the motor is energized), but also when the reaction force control by the motor is not performed (when the motor is de-energized), the transmission lever shaft and the motor's rotation shaft work together, and the transmission lever As the motor rotates, the rotation shaft of the motor is rotated. When the rotating shaft is rotated while the motor is de-energized, rotational friction such as cogging torque generated between the magnet and the core in the motor acts on the shaft side of the transmission lever, and the driver who steps on the accelerator pedal May give a sense of incongruity.

  Therefore, the present invention provides a reaction force output device that does not give an uncomfortable feeling to the operator by preventing the rotation friction on the motor side from acting on the reaction force output shaft side when the reaction force control by the motor is not performed. It is something to be offered.

The reaction force output device according to the present invention employs the following configuration in order to solve the above problems.
In a reaction force output device that outputs reaction force to an operation pedal, a motor that is a drive source for generating reaction force, a reaction force output shaft that transmits reaction force to the operation pedal, a rotation shaft of the motor, and the reaction force output It is interposed between the shafts, and when the motor is driven, the rotating shaft of the motor and the reaction force output shaft are connected, and when the motor is not driven, the rotating shaft of the motor and the reaction force output shaft are disconnected. And a clutch mechanism.
In the case of the present invention, when the motor is driven for reaction force control, the clutch mechanism connects the rotation shaft of the motor and the reaction force output shaft. Thereby, the torque of the motor is output to the operation pedal via the clutch mechanism and the reaction force output shaft. Further, when the motor is not driven, the clutch mechanism shuts off the rotating shaft and the reaction force output shaft of the motor. Therefore, when the reaction force output shaft is rotated from this state, the reaction force output shaft rotates without being affected by rotational friction such as cogging torque on the motor side.

A reduction mechanism is provided between the rotation shaft of the motor and the reaction force output shaft to reduce the rotation and increase the torque in a path for transmitting a driving force from the motor to the reaction force output shaft. Also good.
In this case, since the torque of the motor can be increased by the speed reduction mechanism and a force can be applied to the operation pedal as a reaction force, a small general-purpose motor can be used. As a result, the entire reaction force output device can be reduced in size and weight.

The speed reduction mechanism includes a plurality of speed reduction gear portions that reduce the rotation in stages in the path, and the clutch mechanism is a speed reduction gear section in the final stage closest to the reaction force output shaft in the path. It is desirable to be interposed on the motor side.
In this case, since the clutch mechanism is interposed on the upstream side (motor side) of the path from the reduction gear portion at the final stage, the clutch mechanism is connected / disconnected at a relatively high rotational speed before the final deceleration. Will be done. Therefore, even with a simple clutch mechanism that requires a relatively large relative displacement for connection / disconnection, power can be connected / disconnected in a short time.

The clutch mechanism is disposed in the path so as to be connected to the rotating shaft side of the motor and the first rotating body so as to be coaxial with the first rotating body and relatively rotatable, and the reaction force in the path. The second rotating body connected to the output shaft side, and between the first rotating body and the second rotating body, are coaxial and relative to the first rotating body and the second rotating body. A holder block that is rotatably arranged and holds the clutch pin so that the clutch pin can be moved forward and backward, and the second rotating body is in contact with the tip of the clutch pin protruding from the holder block so as to be able to transmit power The clutch pin is urged in a backward direction by a return spring, and the first rotating body is disposed at a base end of the clutch pin when the first rotating body is rotated by the motor. Is pressed and pressed in the protruding direction. It may be configured to be.
In this case, when the motor is in a non-driven state, the clutch pin on the holder block is retracted by the urging force of the return spring, and the tip of the clutch pin is separated from the clutch engaging portion of the second rotating body. ing. At this time, the first rotator and the second rotator are maintained in a disconnected state. Further, when the motor is driven from this state and the first rotating body rotates, the first rotating body comes into contact with the base end portion of the clutch pin on the holder block, and the clutch pin resists the urging force of the return spring. Project from the holder block. As a result, the tip of the clutch pin comes into contact with the clutch engaging portion of the second rotating body, and the rotation of the first rotating body is transmitted to the second rotating body through the clutch pin.

A plurality of clutch engaging portions of the second rotating body are provided at equal intervals along a circumferential direction centering on the rotation axis of the second rotating body, and the clutch pin of the holder block includes the holder A plurality of holding blocks, and a rotation phase of the first rotating body and the second rotating body when one clutch pin on the holder block comes into contact with a clutch engaging portion on the second rotating body side, The rotational phases of the first rotating body and the second rotating body when the other clutch pins on the holder block and the clutch engaging portion on the second rotating body contact each other are set to be shifted. May be.
In this case, when the motor is driven, one of the one clutch pin and the other clutch pin on the holder block comes into contact with the clutch engaging portion on the second rotating body first. For this reason, quick clutch connection can be realized without increasing the number of clutch engaging portions installed on the second rotating body side.

The rotation phase of the first rotating body and the second rotating body when one clutch pin on the holder block comes into contact with the clutch engaging portion on the second rotating body side, and the other on the holder block The rotation phase of the first rotating body and the second rotating body when the clutch pin of the second rotating body comes into contact with the clutch engaging portion on the second rotating body side is such that the adjacent clutch engagement on the second rotating body side It is desirable that the pitch angle is set to be shifted by half the pitch angle of the part.
As a result, when one clutch pin and the other clutch pin on the holder block are pushed by the first rotating body and project as the motor is driven, at least the first rotating body and the second rotating body are engaged with the clutch. One of the clutch pin and the other clutch pin comes into contact with the clutch engaging portion while being relatively rotated by a half pitch angle of the joint portion. As a result, quicker clutch connection is possible.

  According to the present invention, the motor rotation shaft and the reaction force output shaft are connected between the motor rotation shaft and the reaction force output shaft when the motor is driven, and the motor rotation shaft and the reaction force are not driven when the motor is not driven. Since a clutch mechanism that shuts off the output shaft is installed, the motor side rotational friction is restricted from acting on the reaction force output shaft side when the reaction force control by the motor is not performed. Can do. Therefore, the operational feeling when the reaction force control by the motor is not performed can be improved.

It is a side view of the accelerator pedal apparatus using the reaction force output device of one Embodiment of this invention. It is the front view which removed the housing cover of the reaction force output device of one embodiment of this invention. It is a partial exploded perspective view of the reaction force output device of one embodiment of this invention. It is a partial exploded perspective view of the reaction force output device of one embodiment of this invention. It is the front view which fractured | ruptured some components of the reaction force output device of one Embodiment of this invention. It is the front view which fractured | ruptured some components of the reaction force output device of one Embodiment of this invention. It is sectional drawing of the resistance provision mechanism part of the reaction force output device of one Embodiment of this invention. It is the front view which fractured | ruptured some components of the reaction force output device of one Embodiment of this invention. It is the front view which fractured | ruptured some components of the reaction force output device of one Embodiment of this invention. It is a partial front view of the reaction force output device of one embodiment of this invention. It is the front view which fractured | ruptured some components of the reaction force output device of one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an accelerator pedal device 1 for a vehicle that employs a reaction force output device 10 according to this embodiment.
The accelerator pedal device 1 includes a pedal body unit 2 installed in front of the driver's seat and a reaction force output device 10 installed in an upper position of the pedal body unit 2 in front of the driver's foot.

The pedal body unit 2 includes a holding base 3 attached to the vehicle body, a pedal arm 4 whose base end is rotatably supported by a support shaft 3 a provided on the holding base 3, and a front surface on the distal end side of the pedal arm 4. The holding base 3 is provided with a return spring (not shown) that constantly biases the pedal arm 4 to the initial position. A cable (not shown) for operating the opening of a throttle valve (not shown) of the internal combustion engine is connected to the pedal arm 4 in accordance with the operation amount (rotation angle) of the pedal arm 4. However, when the internal combustion engine employs an electronically controlled throttle, a rotation sensor for detecting the rotation angle of the pedal arm 4 is provided in the pedal body unit 2, and the throttle valve is detected based on the detection signal of the rotation sensor. The opening degree may be controlled. Further, a reaction force transmission lever 6 extending in a direction substantially opposite to the extending direction of the pedal arm 4 is integrally connected to the vicinity of the base end of the pedal arm 4.
In this embodiment, the pedal arm 4 and the pedal body 5 constitute an operation pedal.

FIG. 2 is a diagram illustrating an internal structure of the reaction force output device 10. FIG. 2 shows a state where the housing cover of the resin housing 11 is removed.
The reaction force output device 10 decelerates the rotation of the motor 12 that is a drive source for generating the reaction force, the reaction force output shaft 13 that is pivotally supported by the housing 11, and increases the torque. And a speed reduction mechanism 14 that transmits the reaction force to the reaction force output shaft 13. One end portion of the reaction force output shaft 13 in the axial direction protrudes outward from the side surface of the housing 11, and the output lever 15 is integrally connected to the protruding end portion. As shown in FIG. 1, the distal end portion of the output lever 15 can come into contact with the reaction force transmission lever 6 of the pedal body unit 2 in the rotation direction. The output lever 15 and the reaction force transmission lever 6 come into contact with each other when the pedal body 5 is depressed by the driver. 2 is a circuit board on which a control circuit for driving the motor 12 is mounted.

3 and 4 are exploded perspective views of the main part including the parts constituting the speed reduction mechanism 14.
As shown in FIG. 2, the speed reduction mechanism 14 includes a worm shaft 17 that is coaxially coupled to the rotating shaft 12a of the motor 12, a worm wheel 18 that meshes with the worm shaft 17, and a clutch mechanism 19 (see FIG. 4). And a sector gear 21 meshing with the pinion gear 20, and the sector gear 21 is integrally coupled to the reaction force output shaft 13. The clutch mechanism 19 connects the worm wheel 18 and the pinion gear 20 only when the motor 12 is operated, as will be described in detail later.
In the reduction mechanism 14 of this embodiment, a first-stage reduction gear portion is configured between the worm shaft 17 and the worm wheel 18, and a second-stage reduction gear portion (final-stage reduction gear portion) is provided between the pinion gear 20 and the sector gear 21. Gear section).

  As shown in FIG. 4, the worm wheel 18 is formed on the cylindrical wall portion 22b of the bottomed cylindrical first rotating body 22 having the shaft hole 23 in the bottom wall portion 22a. The pinion gear 20 is attached to a bottomed cylindrical second rotating body 24 that is fitted into the cylindrical wall portion 22b of the first rotating body 22 so as to be relatively rotatable. In this embodiment, the base side of the pinion gear 20 is coaxially embedded and fixed to the outer surface of the bottom wall portion 24 a of the second rotating body 24. The pinion gear 20 and the second rotating body 24 are supported by the housing 11 via support pins 25 penetrating them. A holding shaft 26 that is coaxially fitted to the support pin 25 is rotatably fitted in the shaft hole 23 of the bottom wall portion 22 a of the first rotating body 22.

  Here, as shown in FIG. 3, the sector gear 21 is integrally attached to the other end side in the axial direction of the reaction force output shaft 13, and the sector gear 21 and the reaction force output shaft 13 are initially attached to the sector gear 21. One end of the coil spring 27 that is urged to rotate in the position direction is locked. The other end of the coil spring 27 is locked to a substantially cylindrical spring holder 28 that is locked to the housing 11. 3, reference numerals 29A and 29B are bearings for rotatably supporting the reaction force output shaft 13 on the housing 11, and reference numeral 30 is for fastening and fixing the output lever 15 to the reaction force output shaft 13. The nuts 31 and 32 are a collar and a washer interposed between the output lever 15 and the nut 30.

5 and 6 are views showing the internal structure of the reaction force output device 10 by breaking the bottom wall portion 24a of the second rotating body 24. FIG.
As shown in FIGS. 4 to 6, the clutch mechanism 19 includes a first rotating body 22 connected to the rotating shaft 12 a of the motor 12 via a worm shaft 17 (see FIG. 2) and a worm wheel 18, and a pinion gear 20. And a second rotating body 24 connected to the reaction force output shaft 13 (see FIG. 2) via the sector gear 21 and the first rotating body 22 and the second rotating body 24 so as to be rotatable. Holder block 33. The holder block 33 includes a shaft portion 33a that is fitted and fixed to the two-surface width portion 26a at one end of the holding shaft 26, and a pair of arm portions 33b and 33c that protrude radially outward from the shaft portion 33a. . Each arm portion 33b, 33c is formed with a holding hole 34 extending in a direction intersecting with the radial direction of the holder block 33, and a clutch pin 35 is held in the holding hole 34 so as to be freely advanced and retracted. The holder block 33 is disposed inside the cylindrical wall portion of the second rotating body 24 that is fitted to the first rotating body 22 so as to be relatively rotatable.

  Here, if the direction in which the first rotating body 22 rotates when the motor 12 is driven (the direction indicated by the arrow in FIGS. 5 and 6) is referred to as the normal rotation direction, the clutch pin 35 is moved in the normal rotation direction. It can project forward from the holding hole 34 and is always urged in the backward direction by the return spring 36. In the state where the clutch pin 35 is urged by the return spring 36 and retracted to the maximum, the rear end portion protrudes from the arm portions 33b and 33c by a set length in the direction opposite to the normal rotation direction.

On the other hand, six substantially clutch-shaped clutch engagement portions 37 with which the tip end portions of the clutch pins 35 can come into contact with the inner peripheral surface of the cylindrical wall portion of the second rotating body 24 surrounding the outer peripheral side of the holder block 33. Is protruding. The six clutch engaging portions 37 are provided at equal intervals along the circumferential direction on the inner peripheral surface of the cylindrical wall portion. Each clutch engaging portion 37 has an inclined surface whose surface opposite to the normal rotation direction stands substantially perpendicular to the central direction of the cylindrical wall portion, and inclines toward the front side in the normal rotation direction from the top of the rising surface. The surface is continuous. The leading end portion of the clutch pin 35 can be brought into contact with the standing surface of the clutch engaging portion 37. The protrusion height of each clutch engaging portion 37 is set to a height at which the arm portions 33b and 33c of the holder block 33 do not contact when the holder block 33 relatively rotates inside the second rotating body 24. Yes.
By the way, in the case of this embodiment, each arm part 33b and 33c which hold | maintain the clutch pin 35, and the holding hole 34 formed in them are not formed in the rotationally symmetrical shape centering on the holding shaft 26. As shown in FIG. Each arm part 33b, 33c and the holding hole 34 are formed so as to satisfy the following condition (a).
(A) The rotation phase of the first rotating body 22 and the second rotating body 24 when the tip end portion of one clutch pin 35 comes into contact with the standing surface of one clutch engaging portion 37, and the other clutch pin Rotation phase of the first rotating body 22 and the second rotating body 24 when the front end portion of 35 abuts on the other clutch engaging portion 37 diagonally positioned with the one clutch engaging portion 37 Is shifted by a pitch angle that is half the pitch angle θ of the adjacent clutch engaging portion 37 on the second rotating body 24.

  A pair of rectangular parallelepiped-shaped pressing blocks 38 project from the front surface of the bottom wall portion 22 a of the first rotating body 22. Each of the pressing blocks 38 is disposed on a rotating track facing the protruding portion of the rear end portion of the clutch pin 35 of the holder block 33.

  Further, the holding shaft 26 integrally connected to the holder block 33 is subjected to rotational resistance by the resistance applying mechanism 40 shown in FIGS. The resistance applying mechanism 40 includes a first holder 41 having an arcuate surface 41a that slidably contacts with an approximately half area of the outer peripheral surface of the holding shaft 26, and an approximately half area of the remaining outer peripheral surface of the holding shaft 26. A second holder 42 having an arcuate surface 42a that abuts slidably, and an urging spring 43 that urges the arcuate surfaces 41a, 42a of the first holder 41 and the second holder 42 toward the outer peripheral surface of the holding shaft 26; It has. The first holder 41 is provided with an accommodation groove 44 into which a part of the second holder 42 is slidably fitted. A biasing spring 43 is interposed between the bottom of the accommodation groove 44 and the second holder 42. Yes. The first holder 41 is locked to the housing 11 so as not to move.

  The resistance applying mechanism unit 40 presses the arcuate surfaces 41 a and 42 a of the first holder 41 and the second holder 42 against the outer peripheral surface of the holding shaft 26 by the force of the biasing spring 43, thereby applying rotational resistance to the holding shaft 26. Give. For this reason, when a pressing force in the rotation direction is applied from the pressing block 38 of the first rotating body 22 to the rear end portion of each clutch pin 35 held by the holder block 33, the rotational resistance by the resistance applying mechanism 40. The holding shaft 26 and the holder block 33 that are receiving the same tend to stay at the current position, and each clutch pin 35 protrudes forward in the forward rotation direction against the urging force of the return spring 36. As a result, any one of the clutch pins 35 comes into contact with the clutch engaging portion 37 of the second rotating body 24 in the normal rotation direction.

8 to 11 are diagrams illustrating the operation of the reaction force output device 10. Hereinafter, the operation of the reaction force output device 10 will be described with reference to these drawings.
When the pedal body 5 shown in FIG. 1 is stepped on by the driver, the pedal arm 4 rotates about the support shaft 3a counterclockwise in the figure, and the opening of the throttle valve of the internal combustion engine depends on the rotation angle. Adjusted. On the other hand, when the pedal arm 4 is rotated counterclockwise from the initial position, the reaction force transmission lever 6 fixed to the pedal arm 4 is rotated counterclockwise together with the pedal arm 4 and is moved to the tip of the reaction force transmission lever 6. The output lever 15 of the reaction force output device 10 that is in contact with the reaction force output shaft 13 rotates in the clockwise direction in FIG.

At this time, when the motor 12 of the reaction force output device 10 is driven according to the depression speed of the pedal body 5 and the driving condition of the vehicle, the driving force of the motor 12 passes through the meshing portion of the worm shaft 17 and the worm wheel 18. The first rotating body 22 is rotated in the forward rotation direction (direction indicated by the arrow in FIGS. 5 and 6).
Thus, when the first rotating body 22 rotates in the forward rotation direction, the pressing block 38 of the first rotating body 22 is moved to the rear end portion of the clutch pin 35 on the holder block 33 as shown in FIGS. As the first rotating body 22 further rotates in the forward rotation direction, the clutch pins 35 protrude forward in the forward rotation direction against the urging force of the return spring 36 as shown in FIG. Let At this time, the tip of one of the clutch pins 35 on the holder block 33 abuts on an arbitrary clutch engaging portion 37 on the second rotating body 24 side, and the second rotating body 24 as shown in FIG. Rotate together with the first rotating body 22. At this time, the clutch mechanism 19 is in a connected state.

  When the clutch mechanism 19 is thus connected, as shown in FIG. 10, the pinion gear 20 of the second rotating body 24 rotates in the forward rotation direction, and the sector gear 21 meshed with the pinion gear 20 is rotated clockwise in FIG. Rotate in the direction. As a result, the reaction force output shaft 13 and the output lever 15 integrally coupled to the sector gear 21 rotate in the clockwise direction in FIG. 10 against the urging force of the coil spring 27 as shown by the arrow in FIG. 1, the output lever 15 transmits the reaction force to the pedal arm 4 via the reaction force transmission lever 6 of the pedal body unit 2. At this time, since the torque corresponding to the depression speed of the pedal body 5 and the driving situation of the vehicle is output from the motor 12 to the pedal arm 4, the internal combustion engine is passed to the driver through the soles of the pedal body 5. Information such as the acceleration state of the vehicle and “too much depression” is transmitted.

  Further, when the motor 12 is brought into a non-driven state, for example, when the driver's stepping force on the pedal body 5 is released from this state, the clutch mechanism 19 of the reaction force output device 10 has a holder block as shown in FIG. Due to the urging force of the return spring 36 acting on each of the 33 clutch pins 35, the pressing block 38 of the first rotating body 22 is pushed back in the direction opposite to the normal rotation direction, as indicated by the arrows in FIG. As a result, each clutch pin 35 retracts into the holder block 33, and the engagement between the clutch pin 35 and the clutch engaging portion 37 of the second rotating body 24 is released. Thereby, the clutch mechanism 19 makes the 1st rotary body 22 and the 2nd rotary body 24 into the interruption | blocking state, and the rotating shaft 12a side of the motor 12 is disconnected from the reaction force output shaft 13 side.

Therefore, in this state, for example, when the pedal body 5 of the pedal body unit 2 is stepped on by the driver, the output lever 15 and the reaction force output shaft 13 of the reaction force output device 10 are rotated through the reaction force transmission lever 6. However, at this time, the rotating shaft 12a of the motor 12 is not rotated. For this reason, rotation friction such as cogging torque of the motor 12 does not affect the rotation operation of the pedal arm 4.
Further, when the pedal arm 4 is returned to the initial position with the clutch mechanism 19 disconnected, the reaction force output shaft 13 and the output lever 15 are rotated in the direction of the initial position by receiving the urging force of the coil spring 27. However, since the reaction force output shaft 13 is separated from the rotating shaft 12a side of the motor 12 at this time, the reaction force output shaft 13 and the output lever 15 are quickly initialized without being affected by the rotational friction of the motor 12. Return to position.

As described above, the reaction force output device 10 of this embodiment includes the rotation shaft 12a of the motor 12 and the reaction force output shaft 13 between the rotation shaft 12a of the motor 12 and the reaction force output shaft 13 when the motor 12 is driven. Is connected, and when the motor 12 is not driven, the clutch mechanism 19 is installed to shut off the rotating shaft 12a and the reaction force output shaft 13 of the motor 12, so that the reaction force control by the motor 12 is performed. When not, it is possible to restrict the rotational friction of the motor 12 from acting on the reaction force output shaft 13 side.
Therefore, by employing the reaction force output device 10 of this embodiment, it is possible to improve the feeling of pedal operation when the reaction force control by the motor 12 is not performed.

  In the case of the reaction force output device 10 of this embodiment, since the speed reduction mechanism 14 that increases the torque of the motor 12 is provided between the rotation shaft 12a of the motor 12 and the reaction force output shaft 13, the motor 12 Even with a small general-purpose motor with a small torque, a sufficient reaction force can be applied to the pedal arm 4 of the pedal body unit 2. Therefore, in the reaction force output device 10, a small general-purpose motor can be employed to reduce the size and weight of the reaction force output device 10.

In particular, in the reaction force output device 10 of this embodiment, the final reduction gear portion (of the pinion gear 20 and the sector gear 21 of the reduction mechanism 14) in the path between the rotating shaft 12 a of the motor 12 and the reaction force output shaft 13. Since the clutch mechanism 19 is interposed closer to the motor 12 than the meshing portion), the clutch mechanism 19 can be connected and disconnected at a relatively high rotational speed before the output of the motor 12 is finally decelerated. it can.
Here, when the clutch mechanism is interposed closer to the reaction force output shaft 13 than the final reduction gear portion of the speed reduction mechanism 14, it is necessary to connect and disconnect the clutch mechanism at a relatively low rotational speed. Therefore, a highly accurate clutch mechanism that can complete the connection / disconnection within a slight relative displacement must be employed. However, in the reaction force output device 10 of this embodiment, since the clutch mechanism 19 can be connected / disconnected at a relatively high rotational speed as described above, a large relative displacement is required to complete the connection / disconnection. Even if a relatively simple clutch mechanism 19 is employed, quick power connection / disconnection can be performed.

  Further, in the clutch mechanism 19 employed in the reaction force output device 10 of this embodiment, the holder block 33 that holds the clutch pin 35 so as to advance and retract is coaxial between the first rotating body 22 and the second rotating body 24. And a clutch engaging portion 37 that is in contact with the tip end portion of the clutch pin 35 when the clutch pin 35 protrudes is provided on the inner peripheral portion of the second rotating body 24. While being urged in the reverse direction by the return spring 36, the pressing block 38 of the first rotating body 22 abuts on the base end portion of the clutch pin 35 when the first rotating body 22 is rotated by the motor 12 in the protruding direction. Since the configuration is such that the pressing operation is performed, the reaction force output shaft 13 side and the rotating shaft 12a side of the motor 12 are connected to each other only when the motor 12 is driven, although the configuration is very simple. Rukoto can.

  In particular, the clutch mechanism 19 employed in the reaction force output device 10 of this embodiment is provided with a plurality of clutch pins 35 and a plurality of clutch engaging portions 37, and one clutch engaging portion 37 has a tip portion of one clutch pin 35. The rotational phase of the first rotating body 22 and the second rotating body 24 when contacting the upright surface of the first rotating body 24 and the tip of the other clutch pin 35 are diagonal to the one clutch engaging section 37. Since the rotation phases of the first rotating body 22 and the second rotating body 24 when contacting the other clutch engaging portion 37 are set to be shifted, the holder block 33 is started when the motor 12 starts to be driven. One of the upper clutch pin 35 and the other clutch pin 35 comes into contact with the clutch engaging portion 37 on the second rotating body 24 first. Therefore, quick clutch connection can be realized without increasing the number of clutch engaging portions 37 installed on the second rotating body 24 side, and the structure of the second rotating body 24 can be simplified.

  Furthermore, the clutch mechanism 19 employed in this embodiment can realize quick clutch connection without increasing the number of clutch engaging portions 37 installed on the second rotating body 24 side as described above. The rigidity of each clutch engaging portion 37 can be kept high. That is, if the number of clutch engaging portions 37 is increased in order to realize quick clutch connection, the thickness per clutch engaging portion 37 (the circumferential direction of the second rotating body 24) The thickness of the individual clutch engaging portion 37 is reduced accordingly. However, in the clutch mechanism 19 employed in this embodiment, rapid clutch connection can be realized without increasing the number of clutch engaging portions 37, so that the rigidity of each clutch engaging portion 37 is maintained high. Can do.

  Further, in the clutch mechanism 19 employed in this embodiment, the first rotating body 22 and the second rotating body 24 when the tip end portion of one clutch pin 35 comes into contact with the standing surface of one clutch engaging portion 37 are used. And the first rotating body 22 when the tip of the other clutch pin 35 comes into contact with the other clutch engaging portion 37 diagonally positioned with the one clutch engaging portion 37. Since the rotation phase of the second rotating body 24 is set to be shifted by a pitch angle that is half the pitch angle θ of the adjacent clutch engaging portion 37 on the second rotating body 24 side, the driving of the motor 12 is started. Sometimes, the first rotating body 22 and the second rotating body 24 rotate relative to each other by at least a half of the pitch angle θ of the clutch engaging portion 37 while one clutch pin 35 and another clutch. Make sure that either pin 35 is in contact with the clutch engaging portion 37. Can be touched. Therefore, the clutch mechanism 19 can be connected quickly and efficiently at the start of driving of the motor 12.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, in the above embodiment, the reaction force output device is used for an accelerator pedal of a vehicle, but the reaction force output device is also applied to an operation pedal of a vehicle other than the accelerator pedal, an operation pedal of a simulation device, or the like. be able to.

DESCRIPTION OF SYMBOLS 10 ... Reaction force output device 12 ... Motor 13 ... Reaction force output shaft 14 ... Deceleration mechanism 19 ... Clutch mechanism 22 ... 1st rotary body 24 ... 2nd rotary body 33 ... Holder block 35 ... Clutch pin 36 ... Return spring 37 ... Clutch engagement part

Claims (6)

In the reaction force output device that outputs the reaction force to the operation pedal,
A motor that is a driving source for generating a reaction force;
A reaction force output shaft for transmitting a reaction force to the operation pedal;
The motor is interposed between the rotation shaft of the motor and the reaction force output shaft, the rotation shaft of the motor and the reaction force output shaft are connected when the motor is driven, and the motor rotates when the motor is not driven. A reaction force output device, comprising: a shaft and a clutch mechanism that brings the reaction force output shaft into a disconnected state.   Between the rotating shaft of the motor and the reaction force output shaft, there is provided a speed reducing mechanism for reducing the rotation and increasing the torque in the path for transmitting the driving force from the motor to the reaction force output shaft. The reaction force output device according to claim 1. The reduction mechanism includes a plurality of reduction gear portions that reduce rotation in stages in the path,
The reaction force output device according to claim 2, wherein the clutch mechanism is interposed on the motor side of a final reduction gear portion closest to the reaction force output shaft in the path. The clutch mechanism is
A first rotating body connected to the rotating shaft side of the motor in the path;
A second rotating body arranged coaxially and relatively rotatably with the first rotating body and connected to the reaction force output shaft side in the path;
Between the first rotating body and the second rotating body, it is arranged coaxially with the first rotating body and the second rotating body so as to be relatively rotatable, and holds the clutch pin so as to be able to advance and retract. A holder block for
The second rotating body has a clutch engaging portion that comes into contact with a tip portion of the clutch pin protruding from the holder block so as to be able to transmit power.
The clutch pin is urged in a backward direction by a return spring, and the first rotating body comes into contact with a proximal end portion of the clutch pin when the first rotating body is rotated by the motor. The reaction force output device according to claim 1, wherein the reaction force output device is pressed. A plurality of clutch engaging portions of the second rotating body are provided at equal intervals along a circumferential direction around the rotation axis of the second rotating body,
A plurality of clutch pins of the holder block are held by the holder block,
The rotation phase of the first rotating body and the second rotating body when one clutch pin on the holder block comes into contact with the clutch engaging portion on the second rotating body side, and the other on the holder block The rotation phase of the first rotating body and the second rotating body when the clutch pin of the second rotating body and the clutch engaging portion on the second rotating body side are in contact with each other is set to be shifted. 5. The reaction force output device according to 4.   The rotation phase of the first rotating body and the second rotating body when one clutch pin on the holder block comes into contact with the clutch engaging portion on the second rotating body side, and the other on the holder block The rotation phase of the first rotating body and the second rotating body when the clutch pin of the second rotating body comes into contact with the clutch engaging portion on the second rotating body side is such that the adjacent clutch engagement on the second rotating body side The reaction force output device according to claim 5, wherein the reaction force output device is set to be shifted by a pitch angle that is half the pitch angle of the portion.

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