JP2015207045A - reaction force output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaction force output device which, when an operation pedal is abruptly returned, prevents rotational friction on the motor side from obstructing the rotation of an output lever in a return direction, thereby heightening the responsiveness of reaction force by a motor.SOLUTION: A first rotor 22 on the motor side is provided with a holder block 33 that rotates upon receiving a turning force from the first rotor 22 when rotated by a motor. A clutch claw 35 is rotatably held by the holder block 33. A second rotor 24 on the output lever side is provided with a clutch engagement part 37 capable of engaging with the clutch claw 35. A clutch spring 36 for urging the clutch claw 35 to a rotation position engageable with the clutch engagement part 37 is provided. The clutch claw 35 is held down in a clutch releasing direction by the clutch engagement part 37 when the second rotor 24 rotates in the direction of urging by the urging spring before the holder block 33 rotates.

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 is a housing that pivotally supports the base end of a pedal arm (operating pedal), a return spring for returning the pedal arm to an initial position, and a reaction force for creating a reaction force. A motor and an output lever for transmitting the rotation of the motor to the pedal arm are incorporated. The output lever is always biased toward the initial rotation position by a biasing spring different from the return spring of the pedal arm.
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 given to the pedal arm through the output lever.

JP 2010-111379 A

  However, the accelerator pedal device described in Patent Document 1 has a structure in which the shaft of the output lever for outputting the reaction force to the pedal arm and the rotating shaft of the motor that is the drive source are directly connected. When the motor is suddenly returned, the rotational friction on the motor side becomes the rotational resistance in the return direction of the output lever, and thereby the follow-up of the output lever to the accelerator pedal is delayed. If the output lever follows the accelerator pedal significantly, there will be a space between the pedal arm and the output lever. When the accelerator pedal is depressed again from this state, there is a concern that the reaction force output by the motor will be delayed. The

  Therefore, the present invention can improve the response of the reaction force output by the motor so that the rotation friction on the motor side does not hinder the rotation of the output lever in the return direction when the operation pedal is suddenly returned. A reaction force output device is to be provided.

  In the reaction force output device according to the present invention, in order to solve the above-described problem, in the reaction force output device that outputs the reaction force to the operation pedal, a motor that is a drive source for generating the reaction force and the reaction force on the operation pedal side A reaction force output shaft that outputs to the operation force, an output lever that is connected to the reaction force output shaft and transmits the reaction force to the operation pedal, and the output lever is biased in a direction that follows the return operation of the operation pedal. A biasing spring; and a clutch mechanism for connecting / disconnecting power between the rotating shaft of the motor and the reaction force output shaft, wherein the clutch mechanism transmits a driving force from the motor to the reaction force output shaft. A first rotating body connected to the rotating shaft side of the motor, and the first rotating body coaxially and relatively rotatable with the first rotating body, and connected to the reaction force output shaft side in the path A second rotating body and the first rotation A holder block that receives rotational force from the first rotating body during rotation by the motor and rotates in the same direction as the first rotating body, a clutch pawl that is rotatably held by the holder block, A clutch engaging portion that is provided on the second rotating body and engageable with the clutch pawl; and a clutch spring that biases the clutch pawl to a rotational position engageable with the clutch engaging portion. The clutch pawl engages with the clutch engaging portion to transmit the rotation of the holder block to the second rotating body, and the clutch is disengaged from the clutch engaging portion. And when the second rotating body rotates ahead of the holder block in the urging direction by the urging spring, the clutch engaging portion causes the clutch to rotate. And to be pressed in the removal direction.

Thus, in the initial state, the clutch pawl on the holder block is positioned at the clutch engagement position under the urging force of the clutch spring. When the operating pedal is depressed from this state and the motor is driven for reaction force control, the first rotating body rotates in the reaction force output direction together with the holder block. When the holder block rotates in the reaction force output direction in this way, the clutch pawl on the holder block engages with the clutch engaging portion, and the rotation of the first rotating body is transmitted to the second rotating body side. As a result, the motor torque is output to the operation pedal via the clutch mechanism, the reaction force output shaft, and the output lever in this order.
When the operation pedal is suddenly returned from the depressed state, the output lever receives the urging force of the urging spring and tries to rotate so as to follow the return operation of the operation pedal. As a result, the second rotating body rotates in the return direction via the reaction force output shaft. At this time, in the clutch mechanism, the second rotating body tries to rotate in the urging direction by the urging spring in advance of the holder block, so that the clutch pawl is pressed in the clutch releasing direction by the clutch engaging portion. Therefore, at this time, the clutch mechanism is released, and the output lever quickly follows the return operation of the operation pedal.

A plurality of clutch engaging portions of the second rotating body are provided at equal intervals along a circumferential direction centered on the rotation axis of the second rotating body, and the clutch pawl is configured to rotate the first rotating body. Rotation of the first rotating body and the second rotating body when a plurality of clutch pawls and a second clutch engaging portion on the second rotating body side are engaged with each other. The phase and the rotation phases of the first rotating body and the second rotating body when the other one clutch pawl and the second rotor-side clutch engaging portion are engaged are set to be shifted. You may do it.
Thus, when the motor is driven, one of the one clutch pawl on the holder block and the other clutch pawl comes into contact with the clutch engaging portion on the second rotating body side first. For this reason, a quick clutch connection is realizable.

  According to this invention, when the second rotating body rotates ahead of the holder block in the biasing direction by the biasing spring, the clutch pawl held by the holder block is moved in the clutch release direction by the clutch engaging portion. Therefore, when the operation pedal is suddenly returned, the clutch mechanism between the first rotating body and the second rotating body is released, and the rotation friction on the motor side is in the return direction of the output lever. The rotation is not hindered. Therefore, according to the present invention, when the operation pedal is suddenly returned, the output lever quickly follows the return operation of the operation pedal, and then the reaction force output by the motor is output when the operation pedal is depressed again. Can be obtained quickly.

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 disassembled perspective view of the member around the reaction force output shaft of the reaction force output device of one embodiment of this invention. It is the front view which removed some components, such as the housing of the reaction force output device of one Embodiment of this invention. It is a front view of the 1st rotary body which assembled | attached the holder block of one Embodiment of this invention. It is the front view which fractured | ruptured the bottom wall of the 2nd rotary body of one Embodiment of this invention. It is a partially broken front view which shows the assembly | attachment state of the 1st rotary body and 2nd rotary body of one Embodiment of this invention. It is the figure which described together the typical side view (A) which shows the depression state of the accelerator pedal of one Embodiment of this invention, and the partially broken front view (B) which shows the operation state of the clutch mechanism at that time. It is the figure which combined the typical side view (A) which shows the stepped-back state of the accelerator pedal of one Embodiment of this invention, and the partially broken front view (B) which shows the operation state of the clutch mechanism at that time .

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 is an exploded perspective view of members around the reaction force output shaft 13 of the reaction force output device 10, and FIG. 4 is a reaction force output in which some components such as the housing 11 are removed and the internal components are indicated by dotted lines. 2 is a front view of the device 10. FIG.
As shown in FIGS. 2 and 4, 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 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 FIGS. 2 and 4, the worm wheel 18 is formed on the outer peripheral surface of the cylindrical wall portion 22 b of the bottomed cylindrical first rotating body 22. The pinion gear 20 is attached to a cylindrical bottomed second rotating body 24 which is coaxially fitted to the cylindrical wall portion 22b of the first rotating body 22 and is fitted 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 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.

  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 a coil spring 27 (biasing spring) that urges rotation 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.

FIG. 5 is a view showing the internal structure of the first rotating body 22, FIG. 6 is a view showing the bottom wall portion of the second rotating body 24, and FIG. 7 is the first rotating body. It is a figure which shows the assembly | attachment state of 22 and the 2nd rotary body 24. FIG.
As shown in FIGS. 4 to 7, 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 the second rotating body 24 connected to the reaction force output shaft 13 (see FIG. 2) via the sector gear 21 and the side of the bottom wall portion 22a of the first rotating body 22 facing the second rotating body 24. The first rotary body 22 is rotatably arranged, receives a rotational force from the first rotary body 22 when the first rotary body 22 is rotated by the motor 12, and rotates in the same direction as the first rotary body 22. A rectangular holder block 33 and four clutch claws 35 rotatably held at the four corners of the holder block 33 are provided. Furthermore, the clutch mechanism 19 includes a substantially triangular clutch engaging portion 37 provided on the inner peripheral surface of the cylindrical wall portion of the second rotating body 24 at equal intervals along the circumferential direction, and a holder block 33. Each clutch pawl 35 is provided with a clutch spring 36 that urges each clutch pawl 35 to a rotational position engageable with the clutch engaging portion 37. In the case of this embodiment, the clutch spring 36 is constituted by a torsion coil spring.

A holding shaft 38 that rotatably supports the holder block 33 protrudes from the bottom wall portion 22 a of the first rotating body 22, and four pressing blocks 39 are concentrically centered on the holding shaft 38. The projections are spaced apart at substantially equal intervals. The holding shaft 38 and the pressing blocks 39 are protruded from the surface of the bottom wall portion 22a facing the second rotating body 24.
The center portion of the holder block 33 is rotatably supported by the holding shaft 38, and the holding shaft 38 projects from the axial center position of the first rotating body 22. A shaft hole 23 is provided in the central portion of the holding shaft 38 so as to penetrate the first rotating body 22 in the axial direction. The support pin 25 that supports the pinion gear 20 and the second rotating body 24 is fitted into the shaft hole 23. The first rotating body 22 is rotatably supported by the housing 11 via a support pin 25.

  The clutch pawl 35 is rotatably supported by support shafts 40 provided at the four corners of the outer edge of the holder block 33. The support shaft 40 of the holder block 33 is provided in parallel with the support pin 25 that rotatably supports the first rotating body 22. The clutch pawl 35 has a base portion 35a formed in a substantially circular shape when viewed from the front, and is rotatably supported by the support shaft 40. A substantially trapezoidal pawl piece 35b projects from the base portion 35a.

  Here, if the direction in which the first rotating body 22 rotates when the motor 12 is driven (the direction in which the arrow is pointing in FIG. 4) is referred to as the normal rotation direction, each clutch pawl 35 is rotated in the first rotation. The body 22 is biased by a clutch spring 36 from the front side in the forward rotation direction toward the radially outer side. Each clutch pawl 35 has a clutch engagement position in which the distal end side of the pawl piece 35b is directed radially outward of the first rotating body 22 around the support shaft 40, and the distal end side of the pawl piece 35b is centered on the support shaft 40. It is possible to rotate between the clutch release position directed to the front side in the forward rotation direction. When the clutch pawl 35 is in the clutch engagement position, the tip of the pawl piece 35b is positioned on the rotation track of the clutch engagement portion 37 of the second rotating body 24, and when the clutch pawl 35 is in the clutch release position, The tip of the piece 35 b is positioned inside the rotation track of the clutch engaging portion 37. Since the clutch pawl 35 is biased toward the clutch engagement position by the clutch spring 36 as described above, the clutch pawl 35 can be engaged with the clutch engagement portion 37 in the initial state.

  Further, a front end surface of the first claw 35 that faces forward in the normal rotation direction when the clutch claw 35 is in the clutch engagement position, and a normal rotation direction The taper surface 35c which connects between the rear-end surface which faces back of this by the back-falling slope is provided. The taper surface 35c is formed when the clutch pawl 35 is in the clutch engagement position and the clutch engagement portion 37 of the second rotating body 24 is rotated in the forward rotation direction before the holder block 33. It contacts the engaging portion 37. At this time, the clutch pawl 35 is rotated forward in the forward rotation direction against the force of the clutch spring 36 by the load input to the tapered surface 35c. Thus, the clutch mechanism 19 is brought into a clutch release state.

  Further, the four pressing blocks 39 projecting from the bottom wall portion 22 a of the first rotating body 22 are disposed on the rear side in the forward direction of the base portion 35 a of each clutch pawl 35 supported by the holder block 33. . On the front side in the forward direction of each pressing block 39, a flat pressing surface 39 a that comes into contact with the base portion 35 a of each clutch pawl 35 from the rear side in the forward direction is provided. The pressing surface 39a regulates the rotation of the clutch pawl 35 by contacting the base portion 35a of the clutch pawl 35 from the rear side in the forward rotation direction. Therefore, in this embodiment, the pressing surface 39a also serves as a rotation restricting portion that restricts the rotation of the clutch pawl 35 to the clutch engagement position. The rotation restricting portion can also be provided on the holder block 33.

  On the other hand, each clutch engaging portion 37 of the second rotating body 24 is formed so as to be substantially along the radial direction of the second rotating body 24 on the rear side in the forward rotation direction as shown in FIG. It has an engagement surface 37a that comes into contact with the front end surface of the clutch pawl 35, and a tapered surface 37b formed on the front side in the forward rotation direction so as to be inclined with respect to the radial direction of the second rotating body 24. The taper surface 37b is formed when the clutch pawl 35 is in the clutch engagement position and the clutch pawl 35 is rotated in the forward rotation direction before the holder block 33 when the clutch engagement portion 37 of the second rotating body 24 is rotated. 35 abuts on the tapered surface 35c.

  Further, the pair of clutch claws 35, 35 located at diagonal positions on the holder block 33, and the remaining pair of clutch claws 35, 35 located at a position shifted by 90 ° from these are the clutches of the second rotating body 24. The rotational phase when engaging with the engaging portion 37 is set to be shifted. Therefore, when the first rotating body 22 and the second rotating body 24 are clutch-connected, either one of the pair of clutch claws 35, 35 and the remaining pair of clutch claws 35, 35 is the clutch engaging portion first. 37 is engaged.

FIG. 8 is a diagram illustrating the operation of the reaction force output device 10 when the operation pedal (the pedal body 5 and the pedal arm 4) is depressed, and FIG. 9 illustrates the operation pedal (the pedal body 5 and the pedal arm 4). It is a figure which shows the action | operation of the reaction force output apparatus 10 when is returned rapidly. Hereinafter, the operation of the reaction force output device 10 will be described with reference to these drawings as appropriate.
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. 4 and 8B). At this time, each clutch pawl 35 of the holder block 33 is positioned at the clutch engagement position under the urging force of the clutch spring 36.

  Thus, when the first rotating body 22 rotates in the forward rotation direction, the pressing block 39 protruding from the first rotating body 22 causes the clutch pawl 35 on the holder block 33 to move as shown in FIG. It abuts on the base 35a. When rotation in the forward rotation direction of the first rotating body 22 proceeds in this state, the holder block 33 is pressed by the first rotating body 22 and tries to rotate in the forward rotation direction integrally with the first rotating body 22. . At this time, the clutch pawl 35 receives the urging force of the clutch spring 36 and is positioned at the clutch engagement position, so that either pair of the clutch pawls 35, 35 corresponds to any clutch of the second rotating body 24. It abuts on the engaging portion 37. When the clutch pawl 35 comes into contact with the clutch engaging portion 37 in this way, the rear end surface of the base end side of the pawl piece 35b of the clutch pawl 35 comes into contact with the pressing block 39, and the rotation position of the clutch pawl 35 becomes the clutch engagement position. Retained. When the first rotating body 22 rotates in the forward rotation direction in this state, the rotational force is transmitted to the second rotating body 24 through the contact portion between the clutch pawl 35 and the clutch engaging portion 37. At this time, the clutch mechanism 19 is in a connected state.

  When the clutch mechanism 19 is thus connected, as shown in FIG. 4, the pinion gear 20 of the second rotating body 24 rotates in the forward 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. 4 against the urging force of the coil spring 27 as shown by the arrows 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.

  In addition, when the driver's stepping force on the operation pedal (pedal body 5) is suddenly released from the state in which the operation pedal (pedal body 5) is depressed, the operation pedal is released. The output lever 15 of the reaction force output device 10 receives the biasing force of the coil spring 27 and tries to follow the return operation of the operating pedal. Thereby, the second rotating body 24 tries to rotate in the return direction via the reaction force output shaft 13.

  At this time, in the clutch mechanism 19 of the reaction force output device 10, the second rotating body 24 tries to rotate ahead of the holder block 33 in the biasing direction by the coil spring 27. The claw 35 is pushed down in the clutch release direction by the clutch engaging portion 37 of the second rotating body 24. As a result, the clutch mechanism 19 is released and the second rotating body 24 is allowed to freely rotate in the forward rotation direction. Therefore, the output lever 15 quickly follows the return operation of the operation pedal without being affected by the rotational friction of the motor 12.

As described above, the reaction force output device 10 according to this embodiment is held by the holder block 33 when the second rotating body 24 rotates ahead of the holder block 33 in the biasing direction by the coil spring 27. Since the clutch pawl 35 is pushed down in the clutch release direction by the clutch engaging portion 37, the clutch mechanism 19 between the first rotating body 22 and the second rotating body 24 when the operating pedal is suddenly returned. Can be quickly released to prevent the rotation friction on the motor 12 side from hindering the rotation of the output lever 15 in the return direction.
Therefore, in the case of the reaction force output device 10 according to this embodiment, when the operation pedal is suddenly returned, the output lever 15 can be made to quickly follow the return operation of the operation pedal. Even when it is depressed again, the reaction force output from the motor 12 can be quickly applied to the operation pedal.

  Further, in the reaction force output device 10 according to this embodiment, the clutch engaging portion 37 of the second rotating body 24 is equally spaced along the circumferential direction around the rotation axis of the second rotating body 24. A plurality of clutch claws 35 are provided on the rotation circumference of the first rotating body 22, and a pair of clutch claws 35, 35 on the holder block 33 engage with the clutch engaging portion 37. And the rotational phase when the other pair of clutch claws 35 and 35 are engaged with the clutch engaging portion 37 are set to be shifted. Therefore, in the reaction force output device 10, when the first rotating body 22 and the second rotating body 24 are clutch-connected, the pair of clutch claws 35 and 35 and the remaining pair of clutch claws 35 and 35 are connected. Any one of the sides close to the clutch engaging portion 37 can be engaged with the clutch engaging portion 37 first. Therefore, a quick clutch connection can be realized.

  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 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 holder block 33 is formed separately from the first rotating body 22, but the holder block 33 can also be formed integrally with the first rotating body.
In the above embodiment, the reaction force output device is used for an accelerator pedal of a vehicle. However, 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.

4. Pedal arm (operating pedal)
5. Pedal body (operating pedal)
DESCRIPTION OF SYMBOLS 10 ... Reaction force output device 12 ... Motor 13 ... Reaction force output shaft 15 ... Output lever 19 ... Clutch mechanism 22 ... 1st rotary body 24 ... 2nd rotary body 27 ... Coil spring (biasing spring)
33 ... Holder block 35 ... Clutch claw 36 ... Clutch spring 37 ... Clutch engagement part

Claims (2)

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 outputting a reaction force to the operation pedal,
An output lever coupled to the reaction force output shaft and transmitting the reaction force to the operation pedal;
A biasing spring that biases the output lever in a direction to follow the return operation of the operation pedal;
A clutch mechanism for connecting / disconnecting power between the rotating shaft of the motor and the reaction force output shaft,
The clutch mechanism is
A first rotating body connected to the rotating shaft side of the motor in a path for transmitting a driving force from the motor to the reaction force output shaft;
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;
A holder block that receives a rotational force from the first rotating body during rotation by the motor of the first rotating body and rotates in the same direction as the first rotating body;
A clutch pawl rotatably held by the holder block;
A clutch engaging portion provided on the second rotating body and engageable with the clutch pawl;
A clutch spring that urges the clutch pawl to a rotational position engageable with the clutch engaging portion,
The clutch pawl engages with the clutch engaging portion to transmit the rotation of the holder block to the second rotating body, and a clutch disengagement position disengages from the clutch engaging portion. And can be rotated between
When the second rotating body rotates in the biasing direction of the biasing spring in advance of the holder block, the reaction force output device is pressed in the clutch release direction by the clutch engaging portion. . 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 the clutch pawls are provided on the rotation circumference of the first rotating body,
A rotation phase of the first rotating body and the second rotating body when one clutch pawl and a clutch engaging portion on the second rotating body side are engaged, and the other clutch pawl; The rotation phase of the first rotating body and the second rotating body when the clutch engaging portion on the second rotating body side is engaged is set to be shifted. Reaction force output device.

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