JP2018165891A - Operation suppressing unit, accelerator pedal apparatus, and control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation suppressing unit attempting an improvement of an operability by suppressing an operation to an accelerator pedal apparatus, etc., and a distance control, and the like.SOLUTION: An operation suppressing unit U1 adopted to an accelerator pedal apparatus, etc., includes: a drive source 4 that produces drive forces in one direction and in the other direction; and an operation suppressing mechanism RM1 which locks an operation of an operating member 2 that is equal to smaller than a predetermined operation force by the drive of the drive source 4 in the one direction to suppress the operation of the operating member 2, or locks the operation of the operating member 2 that is equal to or smaller than the predetermined operation force by the drive of the drive source 4 in the one direction to push back the operating member 2 against the operation force by the drive of the drive source 4 in the other direction, thereby suppressing the operation of the operating member 2. This enables suppression of the operation of the operating member like a pedal arm without a discomfort.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an operation suppression unit that suppresses an operation force, an accelerator pedal device including the operation suppression unit, and a control system.

As an accelerator pedal device applied to an electronically controlled throttle system (also referred to as a drive-by-wire system) in an engine mounted on an automobile or the like, an accelerator pedal device that can add a reaction force is known (see Patent Document 1).
The accelerator pedal device includes an accelerator pedal having an accelerator pedal as an operation member supported to be swingable with respect to a housing, a first return spring that exerts an urging force for returning the pedal arm to a rest position, and a pedal force of the accelerator pedal. It has a mechanism that adds a counter reaction force.

  Here, as a reaction force addition mechanism, a reaction force against the pedaling force is generated by being interposed between the movable member, the movable member, and the pedal arm which are arranged to be movable with respect to the housing while receiving the reaction force of the first return spring. A configuration including a reaction force spring to be obtained and a lock mechanism that can lock the movable member so as not to move at a desired timing is employed.

In this accelerator pedal device, after the lock mechanism is activated to suppress excessive depression, the applied reaction force continues to act as a load on the driver as long as the driver continues to step on the accelerator pedal. Therefore, there is room for improvement so that the driver does not get tired.
Also, as long as the driver continues to step on the accelerator pedal after the lock mechanism is activated, the reaction force generation position (lock position) cannot be changed with respect to the stroke of the accelerator pedal. Therefore, even if the driver continues to step on the accelerator pedal, there is room for improvement so that an appropriate reaction force can be applied by changing the lock position according to a change in the road surface condition or the like.

Further, since the magnitude of the reaction force (load) depends on the biasing force of the spring, the magnitude of the reaction force (load) cannot be freely changed.
Furthermore, when the driver keeps stepping on the accelerator pedal despite being close to the front car, a reaction force is generated to encourage the accelerator pedal to switch from the accelerator pedal to the brake pedal. Adoption of a push back function, that is, a function capable of performing distance control is desired.

JP 2010-269638 A

  An object of the present invention is to provide an operation suppression unit capable of suppressing the operation of an operation member such as a pedal arm and an accelerator pedal device to which the operation suppression unit is applied, and a control system.

  The operation suppression unit of the present invention suppresses the operation of the operation member by locking the operation of the operation member below a predetermined operation force by driving the drive source that generates the drive force in one direction and the other direction and the drive source in one direction. And an operation suppression mechanism that performs the operation.

  In the operation suppression unit configured as described above, the operation suppression mechanism generates a load according to the driving force of the drive source to suppress operation of the operation member, or further drive in one direction of the drive source or drive in the other direction Therefore, a configuration may be adopted in which the operation member is pushed back against the operation force to suppress the operation of the operation member.

  In the operation suppression unit configured as described above, the operation suppression mechanism according to the first aspect includes a fixed member fixed at a predetermined position, a contact portion that is movably in contact with the fixed member, and is interlocked with the operation of the operation member. A first moving member that moves in a predetermined direction, and a first pressing member that can adjust a relative position in the predetermined direction with respect to the first moving member and that locks the contact portion while pressing it toward the fixed member. 2 moving members and a drive mechanism that causes relative movement in the predetermined direction between the first moving member and the second moving member so that the pressing portion acts by driving in one direction of the drive source is adopted. May be.

  In the operation suppressing unit configured as described above, the second moving member of the drive mechanism included in the operation suppressing mechanism according to the first aspect further includes a push-back portion that pushes back the first moving member in a direction against the operating force, The mechanism has a relative movement in the predetermined direction between the first moving member and the second moving member so that the pressing portion acts by driving in one direction of the driving source and the pushing back portion acts by driving in the other direction of the driving source. A configuration that generates the above may be adopted.

  In the operation suppression unit configured as described above, the drive mechanism included in the operation suppression mechanism according to the first aspect is held by the drive member that is driven when the drive source is driven and is movable when not driven, and the second moving member. In addition, a configuration including an interlocking member that intervenes and interlocks between the driving member and the first moving member may be adopted.

  In the operation suppression unit having the above configuration, the operation suppression mechanism according to the first aspect adopts a configuration including a biasing spring that generates a biasing force that returns the first moving member to a position corresponding to the rest position of the operation member. Also good.

  In the operation suppression unit configured as described above, the operation suppression mechanism according to the second aspect includes a fixing member fixed at a predetermined position, a contact portion that is movably in contact with the fixing member, and an operation force of the operation member. A ring gear that rotates around a predetermined axis in conjunction with it, a sun gear that can rotate around the axis and that is driven by a drive source, and a contact portion that can rotate around the axis and that is driven in one direction of the drive source. You may employ | adopt the structure containing the carrier which has a press part locked while pressing toward a fixing member, and the planetary gear which is hold | maintained at a carrier and meshes with a sun gear and a ring gear.

  In the operation suppression unit configured as described above, the carrier included in the operation suppression mechanism according to the second aspect further includes a push-back unit that rotates the ring gear in a direction against the operating force by driving in the other direction of the drive source and pushes it back. A configuration may be adopted.

  In the operation suppression unit having the above configuration, the operation suppression mechanism according to the second aspect may include a configuration including a biasing spring that generates a biasing force that returns the ring gear to a position corresponding to the rest position of the operation member.

  In the operation suppressing unit configured as described above, the operation suppressing mechanism according to the third aspect includes a fixing member fixed at a predetermined position, a first moving member that moves in a predetermined direction in conjunction with an operation of the operating member, and a fixing member And a holder member that is movably supported with respect to the first moving member, and the relative position in the predetermined direction with respect to the first moving member can be adjusted and contacted. A second moving member having a pressing portion that locks the portion toward the fixing member, a biasing spring that generates a biasing force that returns the first moving member to a position corresponding to the rest position of the operation member, and a drive source You may employ | adopt the structure containing the drive mechanism which produces the relative movement of the said predetermined direction between a 1st moving member and a 2nd moving member so that a press part may act by the drive of one direction.

  In the operation suppression unit having the above-described configuration, the drive mechanism included in the operation suppression mechanism according to the third aspect is configured such that the pressing portion acts by driving the drive source in one direction and the drive source is further driven in one direction. You may employ | adopt the structure which produces the relative movement of the said predetermined direction between a 1st moving member and a 2nd moving member so that a moving member may be pushed back in the direction which resists operating force.

  In the operation suppressing unit configured as described above, the operation suppressing mechanism according to the third aspect is an engagement provided on the second moving member so as to press the contact portion pressed via the first moving member toward the fixed member. A configuration including a part may be adopted.

  In the operation suppressing unit configured as described above, the drive mechanism included in the operation suppressing mechanism according to the third aspect includes the rotating member that is rotationally driven by the drive source, and the predetermined member interposed between the rotating member and the first moving member. A rotation transmission structure that transmits only rotation while enabling relative movement of the two in the direction, and relative movement of the two in the predetermined direction according to the amount of rotation interposed between the first moving member and the second moving member It is also possible to adopt a configuration including an engagement structure that causes

  In the operation suppression unit having the above-described configuration, the rotation transmission structure of the drive mechanism included in the operation suppression mechanism according to the third aspect is the first movement so that the spline shaft portion formed on the rotation member and the spline shaft portion are fitted. A spline fitting hole formed in the member, and the engagement structure includes a male screw formed in the first moving member and a female screw formed in the second moving member to be screwed into the male screw. May be adopted.

  In the operation suppressing unit having the above-described configuration, the second moving member included in the operation suppressing mechanism according to the third aspect adopts a configuration in which the second moving member is held by the fixed member so as not to rotate around the axis of the first moving member. Also good.

  In the operation suppression unit having the above-described configuration, the holder member included in the operation suppression mechanism according to the third aspect sandwiches the second moving member from both sides with a predetermined gap in the predetermined direction, and the contact portion is predetermined from both sides. The structure formed so that it may be pinched | interposed with the clearance gap of may be employ | adopted.

  In the operation suppression unit configured as described above, the holder member included in the operation suppression mechanism according to the third aspect includes a contact portion that can contact the contact portion so as to press the contact portion toward the engagement portion in the predetermined direction. Including the configuration may be adopted.

  In the operation suppressing unit having the above configuration, the pressing portion may be formed as a first inclined surface that cooperates with the fixing member and sandwiches the contact portion in a wedge shape.

  In the operation suppressing unit configured as described above, the pressing portion is formed as a first inclined surface that sandwiches the contact portion in a wedge shape in cooperation with the fixing member, and the push-back portion cooperates with the fixing member during normal operation of the operating member. A configuration may be adopted in which the second inclined surface having a larger inclination angle than the first inclined surface is formed so as to work and sandwich the contact portion in a wedge shape.

  In the operation suppressing unit having the above-described configuration, the pressing portion is formed as a first inclined surface that sandwiches the contact portion in a wedge shape in cooperation with the fixing member, and the engaging portion is connected to the fixing member during normal operation of the operating member. A configuration in which the contact portion is formed as a second inclined surface having a larger inclination angle than the first inclined surface so as to sandwich the contact portion in a wedge shape may be employed.

In the operation suppressing unit having the above-described configuration, the tilt angle θ of the first inclined surface may be configured to satisfy θ ≧ tan ⁻¹ μ when the friction coefficient between the contact portion and the pressing portion is μ.

  In the operation suppressing unit having the above configuration, the contact portion may be a rolling element that rolls in contact with the fixed member.

  The accelerator pedal device according to the present invention includes a pedal arm as an operation member having an accelerator pedal, a body as a fixed member that rotatably supports the pedal arm within a predetermined movement range, and an operation suppression that suppresses the operation of the pedal arm. A unit is provided, and the operation suppression unit configured as any one of the above is adopted as the operation suppression unit.

  In the accelerator pedal device having the above-described configuration, the drive source of the operation suppression unit is fixed to the body, and the operation suppression mechanism of the operation suppression unit is below a predetermined pedaling force by driving in one direction of the drive source at a desired position within the movement range. The pedal arm stepping operation is locked to suppress the pedal arm operation, or the driving source is driven in one direction to lock the pedal arm stepping operation below a predetermined pedaling force, and the driving source is pushed in one direction. A configuration may be employed in which the pedal arm is pushed back against the pedaling force by driving in the other direction or driving in the other direction to suppress the operation of the pedal arm.

  In the accelerator pedal device having the above configuration, the operation suppression mechanism may employ a configuration in which a load corresponding to the driving force of the drive source is generated to suppress the depression operation of the pedal arm.

  In the accelerator pedal device having the above-described configuration, a configuration including a return spring that exerts an urging force to return the pedal arm to the rest position may be adopted.

  A control system of the present invention is a control system that controls an accelerator pedal device that has one of the above-described configurations mounted on a vehicle, and a position sensor that detects a rotational angle position of a pedal arm included in the accelerator pedal device; The configuration includes an operation state detection unit that detects an operation state, and a control unit that drives and controls the drive source of the operation suppression unit based on information from the position sensor and the operation state detection unit.

According to the operation suppressing unit configured as described above, the conventional technology can be improved, and the operation member can be locked without any sense of incongruity, or the operation member is pushed back against the operation force, or a desired load is generated. Thus, the operation of the operation member can be suppressed.
In addition, according to the accelerator pedal device including the operation suppressing unit having the above-described configuration, the above-described conventional technique can be improved, and the pedal arm depressing operation can be locked at any desired position within the range of movement of the pedal arm without a sense of incongruity. Alternatively, the pedal arm can be pushed back against the depression force, or a desired load can be generated to suppress the depression operation of the pedal arm.

It is a mimetic diagram showing a 1st embodiment of an accelerator pedal device provided with an operation control unit concerning the 1st viewpoint of the present invention. In the accelerator pedal device shown in FIG. 1, it is a schematic diagram showing an operating state of an operation suppressing mechanism when a pedal arm is normally operated. In the accelerator pedal device shown in FIG. 1, it is a schematic diagram showing the operating state of the operation suppression mechanism when the pedal arm is locked. In the accelerator pedal apparatus shown in FIG. 1, it is a schematic diagram which shows the operating state of the operation suppression mechanism when a pedal arm is pushed back. It is a graph which shows the relationship between the load (generated force) which the operation suppression mechanism of this invention generate | occur | produces, and the stroke (depression amount) of a pedal arm. It is a block diagram which shows the control system which controls an accelerator pedal apparatus. In the accelerator pedal apparatus shown in FIG. 1, it is a schematic diagram which shows 2nd Embodiment which provided the urging | biasing spring which urges | biases a 1st moving member. It is a schematic diagram which shows 3rd Embodiment of the accelerator pedal apparatus provided with the operation suppression unit which concerns on the 1st viewpoint of this invention. FIG. 9 is a schematic diagram illustrating an operation state of an operation suppression mechanism when a pedal arm is normally operated in the accelerator pedal device illustrated in FIG. 8. FIG. 9 is a schematic diagram showing an operation state of an operation suppressing mechanism when the pedal arm is locked in the accelerator pedal device shown in FIG. 8. FIG. 9 is a schematic diagram illustrating an operation state of an operation suppression mechanism when a pedal arm is pushed back in the accelerator pedal device illustrated in FIG. 8. It is a graph which shows the pedaling force characteristic in the accelerator pedal apparatus shown in FIG. FIG. 10 is a schematic diagram showing a fourth embodiment in which an urging spring for urging the first moving member is provided in the accelerator pedal device shown in FIG. 8. FIG. 10 is a side view showing an interior of an accelerator pedal device including an operation suppressing unit according to a second aspect of the present invention, with the cover body removed from the housing body. FIG. 15 is a side view showing a state where the cover body is attached to the housing body in the accelerator pedal device shown in FIG. 14. It is a side view which shows the operation suppression mechanism, drive source, etc. which are included in the accelerator pedal apparatus shown in FIG. It is a front view which shows the operation suppression mechanism contained in the accelerator pedal apparatus shown in FIG. It is the rear view which looked at the operation suppression mechanism shown in FIG. 17 from the housing body side. It is the elements on larger scale which show the inclination-angle of a 1st inclined surface in the relationship between the contact part contained in the operation suppression mechanism shown in FIG.17 and FIG.18, and the 1st inclined surface as a press part. The 6th Embodiment of the accelerator pedal apparatus provided with the operation suppression unit which concerns on the 2nd viewpoint of this invention is shown, It is a front view which shows the operation suppression mechanism contained in 6th Embodiment. It is the rear view which looked at the operation suppression mechanism shown in FIG. 20 from the housing body side. It is a side view showing the 7th embodiment of an accelerator pedal device provided with the operation control unit concerning the 3rd viewpoint of the present invention, and showing the inside which removed the cover body from the housing body. FIG. 23 is a side view showing a state where the cover body is attached to the housing body in the accelerator pedal device shown in FIG. 22. It is the elements on larger scale which show the operation suppression unit etc. which are contained in the accelerator pedal apparatus shown in FIG. It is a disassembled perspective view which shows one Embodiment of the drive mechanism contained in the operation suppression unit shown in FIG. It is a fragmentary sectional view of the operation suppression unit in E1-E1 in FIG. In the accelerator pedal apparatus shown in FIG. 22, it is a schematic diagram which shows the state of the operation suppression unit when a pedal arm exists in a rest position. In the accelerator pedal apparatus shown in FIG. 22, it is a schematic diagram which shows the operating state of the operation suppression mechanism when a pedal arm is normally operated. In the accelerator pedal device shown in FIG. 22, it is a schematic diagram showing the operating state of the operation suppression mechanism when the pedal arm is locked. In the accelerator pedal device shown in FIG. 22, it is a schematic diagram showing the operating state of the operation suppression mechanism when the pedal arm is pushed back.

Hereinafter, an accelerator pedal device according to a first embodiment including an operation suppression unit according to a first aspect of the present invention will be described with reference to FIGS. 1 to 6.
As shown in FIGS. 1 and 6, the accelerator pedal device according to the first embodiment includes a body 1 as a fixing member fixed at a predetermined position of the vehicle, a pedal arm 2 as an operation member, a return spring 3, and operation suppression. A unit U1, a control unit 300 embedded in the body 1, and a position sensor S for detecting the rotational angle position of the pedal arm 2 are provided.

The operation suppression unit U1 includes a drive source 4 and an operation suppression mechanism RM1.
The operation suppression mechanism RM1 includes the body 1, the first moving member 5, the second moving member 6, the interlocking member 7 and the driving member as a driving mechanism that causes relative movement between the first moving member 5 and the second moving member 6. 8.

The body 1 is fixed to a vehicle body such as an automobile, and includes a wall surface 1 a that extends in a predetermined direction H that is a moving direction of the first moving member 5.
The pedal arm 2 includes a contact portion 2a and an accelerator pedal 2b that are detachably contacted with the first moving member 5.
The pedal arm 2 is supported so as to be rotatable about the axis L with respect to the body 1 in a movement range between the rest position and the maximum depression position.

  The return spring 3 is a tension spring disposed between the pedal arm 2 and the body 1 so as to exert an urging force for returning the pedal arm 2 to the rest position.

The driving source 4 is fixed to the body 1 and is a torque motor that generates a driving force or driving torque in one direction and the other direction, or an actuator that generates a reciprocating driving force in one direction and the other direction.
The drive source 4 generates a drive force that moves the drive member 8 in the F direction by driving in one direction and moves the drive member 8 in the B direction by driving in the other direction.
Further, the drive source 4 can be controlled to generate a driving force or a driving torque according to the magnitude of the energization current, that is, to generate a driving force or a driving torque as a load having a size according to the request.

  The first moving member 5 is supported so as to linearly reciprocate in the predetermined direction H with respect to the body 1, and comes into contact with the contact portion 5 a at one end, the arm portion 5 b at one side, and the distal end side of the arm portion 5 b. The provided contact part 5c and the engaging part 5d are provided in the other side part.

The contact portion 5a is formed such that the contact portion 2a of the pedal arm 2 is detachably contacted.
The arm portion 5b is formed so as to protrude toward the body 1 on one side, holds the contact portion 5c on the tip side, and allows the push-back portion 6b of the second moving member 6 to be detached from the vertical wall. It comes to contact with.

The contact portion 5c is formed in a cylindrical shape at a portion bent from the tip of the arm portion 5b, and is disposed so as to be movable in contact with the wall surface 1a of the body 1, so that the pressing portion 6a of the second moving member 6 can be detached. To be engaged.
For example, when the interlocking member 7 is a roller, the engaging portion 5d is formed as a contact surface on which the interlocking member 7 is movably contacted, and when the interlocking member 7 is a gear, it is formed as a tooth row that meshes with the gear. Yes.

  The second moving member 6 is supported with respect to the body 1 so that the relative position in the predetermined direction H can be adjusted with respect to the first moving member 5, the pressing portion 6 a and the pushing back portion 6 b on one end side, and the other end side. The shaft portion 6c for rotatably supporting the interlocking member 7 is provided.

The pressing portion 6a is formed as a first inclined surface 6a1 that cooperates with the wall surface 1a of the body 1 and sandwiches the contact portion 5c in a wedge shape.
Here, the inclination angle θ of the first inclined surface 6a1 is formed so as to satisfy θ ≧ tan ⁻¹ μ when the friction coefficient between the contact portion 5c and the pressing portion 6a is μ.
Thereby, when the pressing part 6a cooperates with the wall surface 1a of the body 1 and the contact part 5c is pinched | interposed, the contact part 5c can be reliably locked in the case of below predetermined pedaling force FL.
Then, the pressing portion 6 a is driven in one direction by the driving source 4 to press the contact portion 5 c toward the wall surface 1 a of the body 1 to lock the contact portion 5 c, and a predetermined pedaling force via the first moving member 5. The operation of depressing the pedal arm 2 below FL is locked.

The push-back portion 6b extends in a direction perpendicular to the moving direction (predetermined direction H) of the first moving member 5 and the second moving member 6, and engages with the arm portion 5b of the first moving member 5 so as to be detachable. A mating surface 6b1 is provided.
The pushing-back portion 6b is driven in the other direction of the driving source 4 to abut against the arm portion 5b and pushes back the first moving member 5 in a direction against the pedaling force, that is, in a direction against the pedaling arm 2. Push it back.
Further, when the pedal arm 2 is normally operated, the push-back portion 6b engages with the arm portion 5b and acts to move the second moving member 6 integrally with the first moving member 5.

  The shaft portion 6 c connects the interlocking member 7 so as to be rotatable, and connects the interlocking member 7 so as to be movable in a predetermined direction H integrally with the second moving member 6.

The interlocking member 7 is a rotating body that is rotatably held by the shaft portion 6 c of the second moving member 6, and is movably engaged with the engaging portion 5 d of the first moving member 5 and the drive member 8. ing.
That is, the interlocking member 7 is formed as a roller when the engaging portion 5d of the first moving member 5 and the engaging portion 8a of the driving member 8 are contact surfaces, and the engaging portion 5d and the engaging portion 8a are teeth. Is formed as a gear.

When the driving member 8 moves in the F direction, the interlocking member 7 moves relative to the first moving member 5 in the F direction while rotating clockwise in conjunction with the driving member 8, and the pressing portion 6a. When the is engaged and pressed with the contact portion 5c, the relative movement accompanying the interlocking is stopped.
On the other hand, when the driving member 8 moves in the B direction, the interlocking member 7 moves relative to the first moving member 5 in the B direction while rotating counterclockwise in conjunction with the driving member 8, and push-back portion When 6b is engaged with the arm 5b, the relative movement associated with the interlocking is stopped.

Further, when the first moving member 5 moves in the F direction, the interlocking member 7 moves relative to the first moving member 5 in the B direction while rotating counterclockwise in conjunction with the first moving member 5. When the push-back portion 6b is engaged with the arm portion 5b, the relative movement associated with the interlocking is stopped.
On the other hand, when the first moving member 5 moves in the B direction, the interlocking member 7 moves in the F direction relative to the first moving member 5 while rotating clockwise in conjunction with the first moving member 5. When the pressing portion 6a is engaged with the contact portion 5c and pressed, the relative movement associated with the interlocking is stopped.

The drive member 8 is supported so as to linearly reciprocate in the predetermined direction H with respect to the body 1, and engages with the interlocking member 7 at one side, at the other side or at one end. An engaging portion 8b to which the driving force of the driving source 4 is exerted is provided.
The engaging portion 8a is formed as a contact surface when the interlocking member 7 is a roller, and is formed as a tooth row that meshes when the interlocking member 7 is a gear.
The engaging portion 8b is formed as a tooth row on the other side portion so that the pinion of the torque motor engages when the drive source 4 is a torque motor, and the engagement portion 8b is connected to the rod when the drive source 4 is an actuator that reciprocates. It is formed as a connecting part in the part.

The interlocking member 7 and the driving member 8 described above constitute a driving mechanism that causes a relative movement in the predetermined direction H between the first moving member 5 and the second moving member 6.
That is, the drive mechanism acts so that the pressing portion 6a presses the contact portion 5c toward the wall surface 1a by one drive of the drive source 4, and the push-back portion 6b becomes the arm portion 5b by driving in the other direction of the drive source 4. A relative movement in a predetermined direction H is caused between the first moving member 5 and the second moving member 6 so as to act so that the first moving member 5 is pushed back in a direction against the pedaling force.

  In order to detect the rotational angle position of the pedal arm 2, the position sensor S detects a change of the magnetic flux density with a contact sensor or a magnetic flux density sensor arranged in the pedal arm 2 and the body 1 in a region around the axis L. This is a non-contact sensor that outputs a voltage signal.

The accelerator pedal device having the above-described configuration is driven and controlled by the control system CS as shown in FIG. 6 when mounted on the vehicle.
The control system CS is a position sensor S that detects the rotational angle position of the pedal arm 2, a control unit 300 as a control means, an ECU 310 that controls the whole, a battery 320, a driving state that detects driving states of the vehicle, the driver, and the like. An operating state detection circuit 330 is provided as detection means.

  The control unit 300 includes a microcomputer (chip) 301 that performs control, a drive circuit 302 that drives the drive source 4 based on a control signal from the microcomputer 301, a current detection circuit 303 that detects a drive current that drives the drive source 4, and a microcomputer 301. The ECU 310 includes an I / F (interface) circuit 304 that transmits and receives signals through communication, and a power supply circuit 305 that guides power to the microcomputer 301.

The position sensor S is connected so as to transmit a detection signal to the ECU 310.
The microcomputer 301 appropriately calculates the driving direction and driving force of the driving source 4 to suppress the operation of the pedal arm 2 based on the signal of the position sensor S, the detection information of the driving state detection circuit 330, and the like. Yes.
The driving state detection circuit 330 detects driving information (for example, vehicle speed, engine speed, distance to the preceding vehicle, road surface information, driving mode, driver operating state, etc.) based on various detection sensors. is there.
And when various driving | operation information is detected by the driving | running state detection circuit 330, the drive source 4 of the operation suppression unit U1 is suitably drive-controlled through ECU310 and the control unit 300. FIG.

Next, the operation of the accelerator pedal device having the above configuration will be described.
First, when the driver is at a rest position where the accelerator pedal 2b is not depressed, the pedal arm 2 is stopped at the rest position shown in FIG. 1 by the urging force of the return spring 3, and the drive source 4 is in a non-energized state.

When the driver depresses the accelerator pedal 2 b from this state, the pedal arm 2 rotates counterclockwise against the biasing force of the return spring 3. And the contact part 2a pushes the 1st moving member 5, and the 1st moving member 5 moves to a F direction.
In conjunction with this stepping operation, based on the signal from the position sensor S, a driving force is generated in a direction in which the driving source 4 applies a load to the stepping force. This driving force exerts an urging force that pushes back the pedal arm 2 together with the return spring 3, that is, plays a role of suppressing the stepping operation.
Therefore, a desired urging force can be generated by appropriately controlling the magnitude of the current supplied to the drive source 4.

When the first moving member 5 moves in the F direction due to the rotation of the pedal arm 2 accompanying the stepping operation, the second moving member 6 is relative to the first moving member 5 while the interlocking member 7 rotates counterclockwise. Then, the push-back portion 6b engages with the arm portion 5b.
By this engagement, the first moving member 5 and the second moving member 6 are in a locked state in which relative movement is impossible. Thereby, the 1st moving member 5, the 2nd moving member 6, the interlocking member 7, and the drive member 8 move to a F direction integrally.

  In the rest position, as shown in FIG. 1, if the push-back portion 6b is already engaged with the arm portion 5b, the first moving member 5 and the second moving member 6 are in a locked state where relative movement is not possible. Accordingly, simultaneously with the stepping operation, the first moving member 5, the second moving member 6, the interlocking member 7, and the driving member 8 are integrally moved in the F direction.

Then, as shown in FIG. 2, the pedal arm 2 is stepped on as it is and reaches the maximum stepped position (fully opened position) and stops.
Thereby, the normal depression operation of the pedal arm 2 is performed. Further, in this stepping operation, the operation suppressing mechanism RM1 generates a load corresponding to the driving force of the driving source 4 to suppress the stepping operation of the pedal arm 2 and to position the first moving member 5 at the rest position. It functions as an urging spring that generates an urging force to return to.
Therefore, when it is desired to increase the load on the pedaling force in the stepping operation, the energization of the driving source 4 is appropriately controlled to generate a load (driving force) that suppresses the movement of the driving member 8 in the F direction. The stepping operation of the arm 2 can be suppressed.

On the other hand, when the driver relaxes the pedaling force, the pedal arm 2 is moved to the rest position by the biasing force of the return spring 3 and the load of the drive source 4, that is, the drive force by which the drive source 4 drives the drive member 8 in the B direction. Rotate clockwise toward and stop.
In this return operation, since the push-back portion 6b is engaged with the arm portion 5b, simultaneously with the return operation, the first moving member 5, the second moving member 6, the interlocking member 7, and the driving member 8 are integrally formed. Move in direction B.

By the way, when the driver depresses the accelerator pedal 2b, for example, when performing control to suppress the depression to save excessive acceleration energy due to excessive depression, as shown in FIG. At a desired position within the range, an operation of locking the stepping operation of the pedal arm 2 with a predetermined pedaling force FL or less by driving in one direction of the driving source 4 is performed.
That is, the drive source 4 is driven in one direction at a desired timing based on, for example, a sensor signal that detects that the driver is in a position to depress the accelerator pedal 2b.
Driving in one direction of the driving source 4 moves the driving member 8 in the F direction as shown in FIG. Then, the interlocking member 7 rotates clockwise, and the second moving member 6 moves relative to the first moving member 5 in the F direction.

And the press part 6a (1st inclined surface 6a1) engages with the contact part 5c, cooperates with the body 1, and presses toward the wall surface 1a so that the contact part 5c may be pinched | interposed in a wedge shape.
Thereby, the contact portion 5c is locked so as not to move, and the first moving member 5 is locked so as not to move relative to the body 1 unless a pedaling force exceeding a predetermined pedaling force FL that breaks this locked state is exerted. It becomes.

  When the first moving member 5 is locked, the pedal arm 2 is also unable to rotate. That is, the load (reaction force) on the treading force increases rapidly, and the driver feels that he or she steps on the wall (wall feeling), and the stepping operation is restricted. Therefore, rapid acceleration and the like are prevented, and fuel consumption and the like are improved.

  At this time, the position P at which the locked state is formed, that is, the position P where the load (generated force) is suddenly increased, is selected as shown in FIG. 5 only by selecting the activation timing of the drive source 4 based on a predetermined control signal. In addition, any desired position can be selected within the operating range of the pedal arm 2 (between the rest position and the maximum depression position).

  Further, in the case where the driver does not depress the accelerator pedal 2b and is in the automatic driving mode (automatic driving control mode), the driving source 4 is driven in one direction at the resting position to form the above-described locked state. The pedal 2b can be used as a footrest (footrest). Thereby, a driver | operator's fatigue can be relieved.

This locked state is established when the pressing portion 6a (first inclined surface 6a1) presses the contact portion 5c toward the wall surface 1a and is equal to or less than the predetermined pedaling force FL.
Therefore, when the accelerator pedal 2b is depressed with a depressing force exceeding a predetermined depressing force FL, the contact portion 5c moves relative to the wall surface 1a, and the load (reaction force) increases as shown in FIG. The pedal arm 2 can be depressed.
Therefore, when the driver wants to perform the depression operation against the load, the depression operation of the pedal arm 2 can be performed according to his / her intention by applying a depression force exceeding the predetermined depression force FL.
The lock state is released by moving the second moving member 6 relative to the first moving member 5 in the B direction by driving in the other direction of the driving source 4.

Further, for example, when the driver keeps stepping on the accelerator pedal 2b despite being close to the front vehicle, as shown in FIG. 4, the brake pedal is started from the state where the accelerator pedal 2b is depressed. Distance control is performed in order to encourage a change to
That is, in the operation suppression mechanism RM1, an operation of pushing back the pedal arm 2 against the pedaling force by driving in the other direction of the drive source 4 is performed at a desired position within the movement range.
In this control, the drive source 4 is driven in the other direction based on a control signal at a desired timing.
By driving in the other direction of the drive source 4, the drive member 8 moves in the B direction, the interlocking member 7 rotates counterclockwise, and the second moving member 6 is relative to the first moving member 5 in the B direction. The push-back portion 6b engages with the arm portion 5b.

By this engagement, the first moving member 5 and the interlocking member 7 are in a locked state in which relative movement is impossible. Thereby, as shown in FIG. 4, the 1st moving member 5, the 2nd moving member 6, the interlocking member 7, and the drive member 8 move to B direction integrally.
When the push-back portion 6b is already engaged with the arm portion 5b and is in the locked state, the first moving member 5, the second moving member 6, the interlocking member 7, and the driving member 8 are integrated as they are in the B direction. Move to.
As the first moving member 5 moves in the B direction, the pedal arm 2 is pushed back toward the rest position against the driver's stepping force. Thereby, desired distance control can be performed.
In this return drive, the return speed can be appropriately adjusted by controlling the drive force of the drive source 4.

  That is, by providing the operation suppression mechanism RM1 having the above-described configuration, the pedal arm 2 can be depressed in a desired position within the movement range of the pedal arm 2 by driving the drive source 4 in one direction at a predetermined pedaling force FL or less. In addition, the pedal arm 2 can be pushed back against the pedaling force by driving in the other direction of the driving source 4, and a load corresponding to the driving force of the driving source 4 can be generated to suppress the stepping operation of the pedal arm 2. .

  Here, one drive source 4 is configured to exert a driving force on the operation suppression mechanism RM1, so that the position of generating a load (reaction force) that promotes operation suppression as well as a function as a power source is operated. A function that can be set at any desired position within the range and a function that can appropriately adjust the load (reaction force) for the stepping operation can be used.

FIG. 7 shows a second embodiment of an accelerator pedal device according to the present invention.
In the second embodiment, an urging spring 9 is added to the first embodiment. Therefore, the description of the same configuration and the same operation as those in the first embodiment is omitted.
The biasing spring 9 is disposed between the first moving member 5 and the body 1 and generates a biasing force that returns the first moving member 5 to a position corresponding to the rest position of the pedal arm 2.

In the second embodiment, the urging spring 9 acts to push back the first moving member 5, so that the first moving member 5 moves in the B direction in conjunction with the operation of returning the pedal arm 2.
Therefore, the first moving member 5 can be moved in the B direction without causing the drive source 4 to be energized and generating a driving force.
In this case, the drive source 4 is not always started by being energized, but when the load is adjusted in a normal stepping operation, when the pedal arm 2 is locked by the operation suppression mechanism RM1, the operation suppression mechanism RM1 It is only necessary to energize when performing an operation of pushing back the pedal arm 2. Therefore, it can contribute to power saving of a power source such as a battery in a vehicle or the like.

8 to 11 show a third embodiment of an accelerator pedal device according to the present invention. In the third embodiment, the engagement surface 6b1 of the push-back portion 6b in the first embodiment is changed to the second inclined surface 6b2, and the arm portion 5b is changed to the arm portion 5b1.
Therefore, the description of the same configuration and the same operation as those in the first embodiment is omitted.

The arm portion 5b1 extends linearly from one side of the first moving member 5, and a contact portion 5c is provided at the tip thereof.
The push-back portion 6b includes a second inclined surface 6b2 that is inclined in the direction opposite to the first inclined surface 6a1 of the pressing portion 6a.

The second inclined surface 6b2 is formed at a larger inclination angle than the first inclined surface 6a1.
The push-back portion 6b (second inclined surface 6b2) acts so as to sandwich the contact portion 5b in a wedge shape in cooperation with the wall surface 1a of the body 1 at the time of normal stepping and returning operations of the pedal arm 2. Frictional force is generated.
This frictional force acts in the opposite direction to the depression direction when the pedal arm 2 is depressed, and acts in the opposite direction to the return direction when the pedal arm 2 is returned.
Therefore, in the pedaling force of the pedal arm 2, as shown by the solid line in FIG. 12, a hysteresis characteristic can be obtained in the pedaling force.

The accelerator pedal device according to the third embodiment functions in the same manner as in the first embodiment except that the pedaling force hysteresis characteristic is obtained in the operation suppression mechanism RM1.
That is, during a normal stepping operation, it operates as shown in FIG. 9 and corresponds to the state shown in FIG. 2 of the first embodiment.
Further, when the pedal arm 2 is locked by the operation suppression mechanism RM1, it operates as shown in FIG. 10 and corresponds to the state shown in FIG. 3 of the first embodiment.
Here, when the predetermined pedaling force FL is exceeded in a state of being locked by the operation suppressing mechanism RM1, as shown by a two-dot chain line in FIG.
Further, when the pedal arm 2 is pushed back by the operation suppression mechanism RM1, it operates as shown in FIG. 11 and corresponds to the state shown in FIG. 4 of the first embodiment.

  That is, also in the third embodiment, by providing the operation suppressing mechanism RM1 having the above-described configuration, a pedal at a predetermined pedaling force FL or less by driving in one direction of the driving source 4 at a desired position within the movement range of the pedal arm 2 is provided. The stepping operation of the arm 2 is locked, the pedal arm 2 is pushed back against the stepping force by driving the driving source 4 in the other direction, and a load corresponding to the driving force of the driving source 4 is generated to depress the pedal arm 2. Operation can be suppressed.

  In addition, when one drive source 4 is configured to exert a driving force on the operation suppression mechanism RM1, the position of generating a load (reaction force) that promotes operation suppression as well as a function as a power source is set in the operating range. A function that can be set at any desired position in the inside and a function that can appropriately adjust the load (reaction force) with respect to the stepping operation can be used.

FIG. 13 shows a fourth embodiment of an accelerator pedal device according to the present invention.
In the fourth embodiment, an urging spring 9 is added to the third embodiment as in the second embodiment. Therefore, the description of the same configuration and the same operation as those of the third embodiment is omitted.
The biasing spring 9 is disposed between the first moving member 5 and the body 1 and generates a biasing force that returns the first moving member 5 to a position corresponding to the rest position of the pedal arm 2.

In the fourth embodiment, as in the second embodiment, the urging spring 9 acts to push back the first moving member 5, so that the drive source 4 is not energized and no driving force is generated. 1 The moving member 5 can be moved in the B direction.
Therefore, the drive source 4 is not always started by being energized, but when adjusting the load in a normal stepping operation, when the pedal arm 2 is locked by the operation suppression mechanism RM1, the pedal is controlled by the operation suppression mechanism RM1. It is only necessary to energize when performing the operation of pushing back the arm 2. Therefore, it can contribute to power saving of a power source such as a battery in a vehicle or the like.

FIGS. 14 to 19 show a fifth embodiment of an accelerator pedal device including an operation suppressing unit according to the second aspect of the present invention.
As shown in FIGS. 14 and 15, the accelerator pedal device according to the fifth embodiment includes a body 10 as a fixing member fixed to a predetermined position of a vehicle body such as an automobile, a pedal arm 20 as an operation member, and a return spring 30. , An operation suppressing unit U2, a control unit 300 embedded in the body 10, and a position sensor S for detecting the rotational angle position of the pedal arm 20.

The operation suppression unit U2 includes a drive source 50, interlocking mechanisms 60 and 70, and an operation suppression mechanism RM2.
The operation suppression mechanism RM2 includes a body 10, a biasing spring 40, a ring gear 100 as a first moving member, a carrier 110 as a second moving member, three planetary gears 120 as interlocking members, a sun gear 130 as a driving member, a contact It is comprised by the three rolling elements 140 as a part.

The body 10 is composed of a housing body 10a and a cover body 10b that are formed of a resin material and are coupled to each other by screws.
The housing body 10a includes a peripheral wall 12, a support shaft 13, a cylindrical wall 14, a fitting recess 15, a shaft portion 16, a shaft portion 17, and a shaft portion 18 that define a side wall 11, a pause stopper 12a, and a fully open stopper 12b.

The side wall 11 and the peripheral wall 12 define a concave internal space except for a notch formed so as not to contact the pedal arm 20 in the movement range of the pedal arm 20.
The stop stopper 12a contacts the contact portion 24 of the pedal arm 20 to stop the pedal arm 20 at the stop position.
The fully open stopper 12b contacts the contact portion 25 of the pedal arm 20 to stop the pedal arm 20 at the maximum depressed position (fully opened position).
That is, the movement range of the pedal arm 20 that moves between the rest position and the maximum depression position is defined by the stop stopper 12a and the fully open stopper 12b.

The support shaft 13 protrudes from the side wall 11 in a cylindrical shape that defines the axis L, and supports the pedal arm 20 so as to be rotatable around the axis L.
The cylindrical wall 14 is formed so as to protrude in a cylindrical shape from the side wall 11 with an axis L2 parallel to the axis L as a center, and an inner peripheral surface 14a on which a rolling element 140 as a contact portion held by the ring gear 100 is movably contacted. I have.
The fitting recess 15 is formed so that the motor case 51 of the driving source 50 can be firmly fitted in order to fix the driving source 50 to the housing body 10a.

The shaft portion 16 protrudes in a columnar shape from the side wall 11 in parallel with the axis L, and supports the arm member 61 of the interlocking mechanism 60 in a freely rotatable manner.
The shaft portion 17 protrudes from the side wall 11 in a columnar shape in parallel with the axis L, and supports the two-stage gear 65 of the interlocking mechanism 60 so as to be rotatable.
The shaft portion 18 protrudes from the side wall 11 in a columnar shape in parallel with the axis L, and supports the gear 71 of the interlocking mechanism 70 in a rotatable manner.

The cover body 10b includes a housing portion 19a that houses the position sensor S and the control unit 300, and a connector 19b that electrically connects the wiring on the vehicle side.
The connector 19b may be provided on the housing body 10a side.
The cover body 10b covers the entire body except for the lower region of the pedal arm 20 in a state where the pedal arm 20, the return spring 30, the biasing spring 40, the operation suppression unit U2 and the like are mounted on the housing body 10a. Is formed.

The pedal arm 20 is formed of a resin material and includes a cylindrical portion 21, an accelerator pedal 22, an upper end portion 23, a contact portion 24, and a contact portion 25.
The cylindrical portion 21 is fitted to the support shaft 13 of the housing body 10a so that the pedal arm 20 is supported to be rotatable about the axis L.
The accelerator pedal 22 is integrally formed by extending downward from the cylindrical portion 21 so that the driver can step on the foot.

The upper end portion 23 is integrally formed by extending upward from the cylindrical portion 21 so as to be detachably engaged with the engaging portion 63a of the first arm 63 included in the interlocking mechanism 60.
The contact portion 24 is formed near the lower portion of the upper end portion 23 so as to be detachably contactable with the stop stopper 12a of the housing body 10a.
The abutting portion 25 is formed in the vicinity of the lower portion of the cylindrical portion 21 so as to detachably abut on the fully open stopper 12b of the housing body 10a.

The return spring 30 is a torsion coil spring formed of spring steel or the like, and includes a coil portion 31, a first locking piece 32, and a second locking piece 33.
Here, the coil portion 31 is fitted around the cylindrical portion 21 of the pedal arm 20, the first locking piece 32 is hooked on the peripheral wall 12 of the housing body 10 a, and the second locking piece 33 is a part of the pedal arm 20. It is hung on the part.
The return spring 30 directly exerts an urging force that returns the pedal arm 20 to the rest position around the axis L.

  Thus, since the return spring 30 is directly engaged with the pedal arm 20 and exerts an urging force, even if the operation suppressing mechanism RM2, the interlocking mechanisms 60 and 70, etc. are temporarily locked to cause a malfunction, The arm 20 can be reliably returned to the rest position, and safety is guaranteed.

The urging spring 40 is a torsion coil spring formed of spring steel or the like, and includes a coil portion 41, a first locking piece 42, and a second locking piece 43.
Here, the coil portion 41 is fitted around the cylindrical portion 62 of the arm member 61 included in the interlocking mechanism 60, the first locking piece 42 is hooked on the peripheral wall 12 of the housing body 10 a, and the second locking piece 43. Is hooked on a part of the second arm 64 of the arm member 61.

The biasing spring 40 exerts a biasing force that rotates the arm member 61 counterclockwise in FIG. 14 around the shaft portion 16.
That is, the biasing spring 40 generates a biasing force that returns the ring gear 100 included in the operation suppression mechanism RM2 to a position corresponding to the rest position of the pedal arm 20 via the interlocking mechanism 60.
Further, the biasing spring 40 generates a biasing force that rotates the pedal arm 20 clockwise in FIG. 14 and returns it to the rest position via the engagement between the engaging portion 63a of the first arm 63 and the upper end portion 23. .

The drive source 50 is a torque motor that generates a drive torque, and includes a motor case 51 and a pinion 52 fixed to a drive shaft 51 a protruding from the motor case 51.
The drive source 50 is fixed to the body 10 by being fitted into the fitting recess 15 of the housing body 10a.

The drive source 50 generates a driving force (driving torque) in one direction when energized in one direction, and generates a driving force (driving torque) in the other direction when energized in the other direction.
The driving source 50 generates a driving force (driving torque) corresponding to the magnitude of the energized current, that is, generates a driving force (driving torque) as a load having a size according to the request. Yes.

The interlocking mechanism 60 is interposed between the pedal arm 20 and the ring gear 100 and includes an L-shaped arm member 61 and a two-stage gear 65.
The arm member 61 includes a cylindrical portion 62, a first arm 63, and a second arm 64.
The cylindrical portion 62 is formed so as to be rotatably fitted to the shaft portion 16.
The first arm 63 includes a columnar engagement portion 63a that engages with the upper end portion 23 of the pedal arm 20 on the distal end side.
The second arm 64 includes an arcuate tooth row portion 64 a that meshes with the small gear 65 a of the two-stage gear 65 on the tip side.

The two-stage gear 65 is rotatably fitted to the shaft portion 17 of the housing body 10a, and a small gear 65a that meshes with the tooth row portion 64a of the second arm 64 and a large gear that meshes with the external teeth 102 of the ring gear 100. A gear 65b is provided.
Here, the two-stage gear 65 is interposed between the arm member 61 and the ring gear 100 and constitutes a speed reduction mechanism included in the interlocking mechanism 60.

The interlocking mechanism 70 is interposed between the drive source 50 and the sun gear 130, and includes a gear 71 that is rotatably supported by the shaft portion 18 and a gear 72 that rotates coaxially with the sun gear 130. ing.
The gear 71 has a larger diameter than the pinion 52 and meshes with the pinion 52 and the gear 72.
The gear 72 has the same diameter as the gear 71 or a larger diameter, and is engaged with the gear 71 so as to rotate integrally with the sun gear 130 around the axis L2 or is integrally formed with the sun gear 130.
Instead of the gear 71, a two-stage gear that is coaxially integrated with a large-diameter gear that meshes with the pinion 52 and a small-diameter gear that meshes with the gear 72 may be adopted so as to further reduce the speed. .

  When the drive source 50 is activated and the drive shaft 51a rotates in one direction, the interlocking mechanism 70 rotates the sun gear 130 in one direction via the pinion 52 → the gear 71 → the gear 72, while the drive shaft 51a. Is rotated in the other direction, the sun gear 130 is rotated in the other direction via the pinion 52 → the gear 71 → the gear 72, and the driving force of the driving source 50 is transmitted.

The ring gear 100 functions as a first moving member, is formed with a smaller diameter than the cylindrical wall 14 of the housing body 10a, and is supported so as to be rotatable around the axis L2.
Further, the ring gear 100 is capable of rotating a rolling element 140 that rolls while being in contact with the inner teeth 101 formed on the inner peripheral surface, the outer teeth 102 formed on the outer peripheral surface, and the inner peripheral surface 14a of the cylindrical wall 14. There are provided three pairs of holding pieces 103 that are revolved around the axis L2.

The inner teeth 101 are formed at three locations on the inner peripheral surface (at intervals of approximately 120 degrees in the circumferential direction) partially or over the entire inner peripheral surface, and mesh with the three planetary gears 120.
The external teeth 102 are formed on the outer peripheral surface partially or over the entire outer peripheral surface, and mesh with the large gear 65 b of the two-stage gear 65 included in the interlocking mechanism 60.

  The three pairs of holding pieces 103 are arranged at equal intervals (approximately every 120 degrees) in the circumferential direction. Each pair of holding pieces 103 is configured to revolve around the axis L2 together with the rotation of the ring gear 100 so as to hold one rolling element 140 so as to rotate about an axis parallel to the axis L2. , Projecting outward in the radial direction and extending to the inside of the cylindrical portion 12 in the direction of the axis L2.

The carrier 110 functions as a second moving member, is formed in a substantially annular shape, and is supported so as to be rotatable around the axis L2 with respect to the housing body 10a.
Further, the carrier 110 has three shaft portions 111 arranged at equal intervals (every 120 degrees) in the circumferential direction on a predetermined radius centered on the axis L2, and three pairs of protrusions projecting radially outward from the outer peripheral surface. Protrusions are provided.

The three shaft portions 111 each support the planetary gear 120 so as to freely rotate (spin).
The three pairs of protrusions are arranged at equal intervals (every 120 degrees) in the circumferential direction on the outer peripheral surface. Each pair of projecting portions includes a pressing portion 112 and a pushing-back portion 113.

As shown in FIG. 19, the pressing portion 112 is formed so as to define a first inclined surface 112a so as to sandwich the rolling element 140 in a wedge shape in cooperation with the inner peripheral surface 14a of the cylindrical wall 14 of the housing body 10a. Has been.
17 and 18, the first inclined surface 112 a is detached from the rolling element 140 when the carrier 110 rotates in the R2 direction.
On the other hand, as shown in FIGS. 17 and 18, the first inclined surface 112a is engaged with the rolling element 140 and presses the rolling element 140 toward the inner peripheral surface 14a when the carrier 110 rotates in the R1 direction. It has become.

Here, as shown in FIG. 19, the first inclined surface 112 a has an inclination angle with respect to a tangent at a position where the rolling element 140 contacts on the outer peripheral surface of the carrier 110, and a friction coefficient between the rolling element 140 and the pressing portion 112. When μ is set, θ ≧ tan ⁻¹ μ is satisfied.
As a result, when the pressing portion 112 cooperates with the inner peripheral surface 14a of the body 10 to sandwich the rolling element 140, the rolling element 140 can be reliably locked in the case where the pressing force is equal to or less than the predetermined pedaling force FL.
Then, the pressing unit 112 locks the rolling element 140 by pressing the rolling element 140 toward the inner peripheral surface 14 a of the body 10 by driving in one direction of the driving source 50, and via the ring gear 100 and the interlocking mechanism 60. Thus, the depression operation of the pedal arm 20 at a predetermined depression force FL or less is locked.

The push-back portion 113 is formed to project linearly from the outer peripheral surface of the carrier 110 in the radial direction.
17 and 18, when the carrier 110 rotates in the R2 direction, the push-back unit 113 engages with the rolling element 140 and rotates the rolling element 140 and the ring gear 100 in the same direction.
On the other hand, as shown in FIGS. 17 and 18, the push-back portion 113 is configured to be detached from the rolling element 140 when the carrier 110 rotates in the R1 direction.

The planetary gear 120 functions as an interlocking member, has teeth 121 formed on the outer peripheral surface partially or over the entire circumference, is held by the shaft portion 111 of the carrier 110, and is parallel to the axis L2. It is supported so as to be rotatable around an axis.
The planetary gear 120 meshes with the inner gear 101 of the ring gear 110 and the sun gear 130.

When the sun gear 130 rotates in the R1 direction, the planetary gear 120 rotates the carrier 110 relative to the ring gear 100 in the R1 direction while rotating counterclockwise in FIG. When 112 is engaged with the rolling element 140 and pressed, the relative movement associated with the interlocking is stopped.
On the other hand, when the sun gear 130 rotates in the R2 direction, the planetary gear 120 rotates in the clockwise direction in FIG. 17 in conjunction with the sun gear 130, moves the carrier 110 relative to the ring gear 100 in the R2 direction, and pushes back. When the part 113 is engaged with the rolling element 140, the relative movement associated with the interlocking is stopped.

Further, when the ring gear 100 rotates in the R1 direction, the planetary gear 120 rotates in the clockwise direction in FIG. 17 in conjunction with the ring gear 100 while rotating the carrier 110 relative to the ring gear 100 in the R2 direction to push back. When the part 113 is engaged with the rolling element 140, the relative movement associated with the interlocking is stopped.
On the other hand, when the ring gear 100 rotates in the R2 direction, the planetary gear 120 rotates the carrier 110 relative to the ring gear 100 in the R1 direction while rotating counterclockwise in FIG. When the pressing portion 112 is engaged with the rolling element 140 and pressed, the relative movement associated with the interlocking is stopped.

  The sun gear 130 functions as a drive member, is supported rotatably around the axis L2, meshes with the three planetary gears 120, and rotates integrally with the gear 72 coaxially. ing.

The rolling element 140 functions as a contact portion, and is a cylindrical roller having an axis parallel to the axis L2.
The rolling element 140 is rotatably inserted between the pair of holding pieces 103 of the ring gear 100 and held, and the ring gear 100 rotates about the axis L2 together with the ring gear 100 to rotate about the axis L2. It has come to revolve.

The position sensor S is disposed in the cylindrical portion 21 of the pedal arm 20 and the accommodating portion 19a of the cover body 10b in a region around the axis L of the pedal arm 20.
The position sensor S is, for example, a non-contact magnetic sensor, and is a pair of arcuate armatures made of a magnetic material provided in the region of the cylindrical portion 21 of the pedal arm 20 and an arcuate shape coupled to the inner peripheral surface of the armature. Permanent magnets, two stators made of a magnetic material embedded in the cover body 10b, and two Hall elements arranged between the two stators.

As other related components, terminals, circuit boards on which various electronic components are mounted, and the like are provided.
The position sensor S detects a change in the magnetic flux density with a Hall element and outputs it as a voltage signal when the pedal arm 20 rotates, and detects the rotational angle position of the pedal arm 20.
Note that the accelerator pedal device configured as described above is driven and controlled by the control system CS to which the drive source 50 is applied as shown in FIG. 6 when mounted on the vehicle.

Next, the operation of this accelerator pedal device will be described.
First, when the driver is at a rest position where the accelerator pedal 22 is not depressed, the abutting portion 24 of the pedal arm 20 abuts against the rest stopper 12a by the urging force of the return spring 30 and the urging spring 40, and the pedal arm 20 Stops at a rest position indicated by a solid line in FIG. 15, and the drive source 50 is in a non-energized state.

When the driver depresses the accelerator pedal 22 from this state, the pedal arm 20 rotates counterclockwise against the biasing force of the return spring 30 and the biasing spring 40. Then, the upper end 23 pushes the engaging portion 63a, the arm member 61 rotates clockwise, the two-stage gear 65 rotates counterclockwise, and the ring gear 100 rotates in the R1 direction.
Further, in conjunction with this stepping operation, based on the signal from the position sensor S and the like, a driving force is generated in a direction in which the driving source 50 applies a load to the stepping force. This driving force acts as an urging force that pushes back the pedal arm 20 and serves to suppress the stepping operation.
Therefore, by appropriately controlling the magnitude of the current supplied to the drive source 50, a desired urging force can be generated. On the other hand, if no load is required, the drive source 50 can be de-energized. .

When the ring gear 100 rotates in the R1 direction via the interlocking mechanism 60 due to the rotation of the pedal arm 20 accompanying the stepping operation, the planetary gear 120 rotates clockwise in FIG. The push-back portion 113 is engaged with the rolling element 140 by rotating relative to the direction.
By this engagement, the ring gear 100 and the carrier 110 are in a locked state in which relative movement is impossible. As a result, the ring gear 100, the carrier 110, the planetary gear 120, and the sun gear 130 rotate together in the R1 direction.
Then, the pedal arm 20 is depressed and reaches the maximum depressed position (fully opened position), and the contact portion 25 contacts the fully opened stopper 12b and stops.

  If the push-back portion 113 is already engaged with the rolling elements 140 at the rest position, the ring gear 100 and the carrier 110 are in a locked state where relative movement is not possible. Therefore, simultaneously with the stepping operation, the ring gear 100, the carrier 110, the planetary gear 120, and the sun gear 130 rotate in the R1 direction as they are.

Then, the pedal arm 20 is stepped on so that the contact portion 25 contacts the fully open stopper 12b, and stops at the maximum depressed position (full open position) indicated by a two-dot chain line in FIG.
Thereby, the normal depression operation of the pedal arm 20 is performed. Further, in this stepping operation, the operation suppressing mechanism RM2 generates a load corresponding to the driving force of the driving source 50, suppresses the stepping operation of the pedal arm 20, and returns the ring gear 100 to the position corresponding to the rest position. It also functions as a biasing spring that generates power.
Accordingly, when it is desired to increase the load on the pedaling force in the stepping operation, the drive source 50 is energized as appropriate to generate a load (drive torque) that suppresses the rotation of the sun gear 130 in the R1 direction. The stepping operation can be suppressed.

On the other hand, when the driver loosens the pedaling force, the pedal arm 20 causes the urging force of the return spring 30 and the urging spring 40 and the load of the drive source 50, that is, the drive that the drive source 50 rotationally drives the sun gear 130 in the R2 direction. The force rotates clockwise toward the rest position, and the contact portion 24 contacts the stop stopper 12a and stops.
In this returning operation, since the push-back portion 113 is engaged with the rolling element 140, the ring gear 100, the carrier 110, and the carrier 110 are linked with the counterclockwise rotation of the arm member 61 and the clockwise rotation of the two-stage gear 65. The planetary gear 120 and the sun gear 130 rotate in the R2 direction as they are.

By the way, when the driver depresses the accelerator pedal 22, for example, when the depression is suppressed in order to save excessive acceleration energy due to excessive depression, the drive source 50 is set at a desired position within the movement range in the operation suppression mechanism RM2. The operation of locking the depression operation of the pedal arm 20 at a predetermined depression force FL or less is performed by driving in one direction.
In other words, the drive source 50 is driven in one direction at a desired timing based on, for example, a sensor signal that detects that the driver is in a position to depress the accelerator pedal 22.
By driving the drive source 50 in one direction, the sun gear 130 rotates in the R1 direction. Then, the planetary gear 120 rotates counterclockwise in FIG. 17 and the carrier 110 rotates relative to the ring gear 100 in the R1 direction.

And the press part 112 (1st inclined surface 112a) engages with the rolling element 140, and presses it toward the internal peripheral surface 14a so that the rolling element 140 may be pinched | interposed in a wedge shape in cooperation with the housing body 10a.
As a result, the rolling element 140 is locked so as not to move, and the ring gear 100 is locked in a non-rotatable manner relative to the housing body 10a unless a pedaling force exceeding a predetermined pedaling force FL that breaks the locked state is exerted. .

  When the ring gear 100 is locked, the interlock mechanism 60 does not operate, so that the pedal arm 20 also cannot be rotated. That is, the load (reaction force) on the treading force increases rapidly, and the driver feels that he or she steps on the wall (wall feeling), and the stepping operation is restricted. Therefore, rapid acceleration and the like are prevented, and fuel consumption and the like are improved.

  At this time, the position where the locked state is formed, that is, the position where the load (generated force) is suddenly increased, is selected only by selecting the start timing of the drive source 50 based on a predetermined control signal. As shown in the figure, any desired position can be selected within the operating range of the pedal arm 20 (between the rest position and the maximum depression position).

  Further, when the driver performs the automatic driving traveling (automatic driving control mode) without depressing the accelerator pedal 22, the driving source 50 is driven in one direction at the rest position to form the locked state described above. The pedal 22 can be used as a footrest plate (footrest). Thereby, a driver | operator's fatigue can be relieved.

This locked state is established when the pressing portion 112 (first inclined surface 112a) presses the rolling element 140 toward the inner peripheral surface 14a and is equal to or less than the predetermined pedaling force FL.
Therefore, when the accelerator pedal 22 is depressed with a depressing force exceeding a predetermined depressing force FL, the rolling element 140 moves relative to the inner peripheral surface 14a, and the load (reaction force) is increasing as shown in FIG. In addition, the pedal arm 20 can be depressed.
Therefore, when the driver wants to perform the depression operation against the load, the depression operation of the pedal arm 20 can be performed according to his / her intention by applying a depression force exceeding the predetermined depression force FL.
The lock state is released by rotating the carrier 110 relative to the ring gear 100 in the R2 direction by driving the drive source 50 in the other direction.

Further, for example, when the driver keeps stepping on the accelerator pedal 22 even though the vehicle is approaching the front vehicle, in order to urge the driver to switch from the depressed state to the brake pedal. In addition, distance control is performed.
That is, in the operation suppression mechanism RM2, an operation of pushing back the pedal arm 20 against the pedaling force by driving in the other direction of the drive source 50 is performed at a desired position within the movement range.
In this control, the drive source 50 is driven in the other direction based on a control signal at a desired timing.
By driving the drive source 50 in the other direction, the sun gear 130 rotates in the R2 direction, and the planetary gear 120 rotates clockwise in FIG. 17, while the carrier 110 rotates relative to the ring gear 100 in the R2 direction. The push-back part 113 engages with the rolling element 140.

By this engagement, the ring gear 100 and the planetary gear 120 are locked, and the relative movement becomes impossible. As a result, the ring gear 100, the carrier 110, the planetary gear 120, and the sun gear 130 rotate together in the R2 direction.
When the push-back portion 113 is already engaged with the rolling element 140 and is in a locked state, the ring gear 100, the carrier 110, the planetary gear 120, and the sun gear 130 rotate together in the R2 direction as they are.
When the ring gear 100 rotates in the R2 direction, the pedal arm 20 is pushed back toward the rest position against the driver's stepping force via the interlocking mechanism 60. Thereby, desired distance control can be performed.
In this return drive, the return speed can be appropriately adjusted by controlling the drive force (drive torque) of the drive source 50.

  That is, by providing the operation suppression mechanism RM2 having the above-described configuration, the pedal arm 20 can be depressed in a desired position within the movement range of the pedal arm 20 by driving the drive source 50 in one direction at a predetermined pedaling force FL or less. In addition, the pedal arm 20 can be pushed back against the pedaling force by driving in the other direction of the driving source 50, and a load corresponding to the driving force of the driving source 50 can be generated to suppress the stepping operation of the pedal arm 20. .

  Here, one drive source 50 is configured to exert a driving force on the operation suppression mechanism RM2, so that the position of generating a load (reaction force) that promotes operation suppression as well as a function as a power source is operated. A function that can be set at any desired position within the range and a function that can appropriately adjust the load (reaction force) for the stepping operation can be used.

20 and 21 show a sixth embodiment of an accelerator pedal device according to the present invention. In the sixth embodiment, the pushback unit 113 in the fifth embodiment is changed to a pushback unit 114.
The accelerator pedal device according to the sixth embodiment functions in the same manner as the fifth embodiment, except that the hysteresis characteristic of the pedal effort is obtained in the operation suppression mechanism RM2.
Therefore, the description of the same configuration and the same operation as those of the fifth embodiment is omitted.

The push-back unit 114 includes a second inclined surface 114a that is inclined in a direction opposite to the first inclined surface 112a of the pressing unit 112.
The second inclined surface 114a is formed at a larger inclination angle than the first inclined surface 112a.
The push-back portion 114 (second inclined surface 114a) sandwiches the rolling element 140 in a wedge shape in cooperation with the inner peripheral surface 14a of the housing body 10a during normal depression and return operations of the pedal arm 20. It acts like this and produces frictional force.

This frictional force acts in the opposite direction to the depression direction when the pedal arm 20 is depressed, and acts in the opposite direction to the return direction when the pedal arm 20 is returned.
Therefore, in the pedaling force of the pedal arm 20, as shown by the solid line in FIG. 12, a hysteresis characteristic can be obtained in the pedaling force.

  That is, also in the sixth embodiment, by providing the operation suppression mechanism RM2 having the above-described configuration, a pedal at a predetermined pedaling force FL or less by driving in one direction of the drive source 50 at a desired position within the movement range of the pedal arm 20 is provided. The stepping operation of the arm 20 is locked, the pedal arm 20 is pushed back against the stepping force by driving in the other direction of the driving source 50, and a load corresponding to the driving force of the driving source 50 is generated to step on the pedal arm 20. Operation can be suppressed.

  In addition, when one drive source 50 is configured to exert a driving force on the operation suppression mechanism RM2, the position where the load (reaction force) that promotes the operation suppression is generated as well as the function of the power source. A function that can be set at any desired position in the inside and a function that can appropriately adjust the load (reaction force) with respect to the stepping operation can be used.

22 thru | or 30 shows 7th Embodiment of the accelerator pedal apparatus provided with the operation suppression unit which concerns on the 3rd viewpoint of this invention.
As shown in FIGS. 22 and 23, the accelerator pedal device according to the seventh embodiment includes a body 200 as a fixing member fixed to a predetermined position of a vehicle body such as an automobile, a pedal arm 210 as an operation member, and a return spring 220. , An operation suppression unit U3, a control unit 300 embedded in the body 200, and a position sensor S for detecting the rotational angle position of the pedal arm 210.

The operation suppression unit U3 includes a drive source 230 and an operation suppression mechanism RM3.
The operation suppression mechanism RM3 includes a first moving member 240 that moves in a predetermined direction H (in the direction of the axis H1) in conjunction with the operation of the body 200 and the pedal arm 210, a holder member 250, two rolling elements 260 as contact portions, 2 moving member 270, urging spring 280, and a driving mechanism that causes relative movement between first moving member 240 and second moving member 270.

Here, the driving mechanism includes a rotating member 290, a spline shaft portion 291 and a spline fitting hole 243 as a rotation transmission structure, a male screw 242 and a female screw 271 as an engaging structure, and a gear 293 fixed to the rotating member 290. It is configured.
The rotation transmission structure is interposed between the rotating member 290 and the first moving member 240 and rotates around the axis H1 while enabling relative movement of both (the rotating member 290 and the first moving member 240) in the predetermined direction H. The function to transmit only.
Further, the engagement structure is interposed between the first moving member 240 and the second moving member 270, and both in the predetermined direction H according to the rotation amount of the first moving member 240 (the first moving member 240 and the second moving member). It functions to cause relative movement of the member 270).

The body 200 is made of a resin material and includes a housing body 200a and a cover body 200b that are coupled to each other by screws.
The housing body 200a includes a side wall 201, a peripheral wall 202 that defines a stop stopper 202a and a fully open stopper 202b, a support shaft 203, a pair of inner walls 204, an inner wall 205, a fixed wall 206 that fixes a drive source 230, and a spring receiving portion 207. Yes.

The side wall 201 and the peripheral wall 202 define a concave internal space except for a notch formed so as not to contact the pedal arm 210 in the movement range of the pedal arm 210.
The stop stopper 202a makes the contact portion 214 of the pedal arm 210 contact and stops the pedal arm 210 at the stop position.
The fully open stopper 202b contacts the contact portion 215 of the pedal arm 210 to stop the pedal arm 210 at the maximum depressed position (fully opened position).
That is, the movement range of the pedal arm 210 that moves between the rest position and the maximum depression position is defined by the rest stopper 202a and the fully open stopper 202b.

The support shaft 203 protrudes from the side wall 201 in a columnar shape that defines the axis L, and supports the pedal arm 20 so as to be rotatable around the axis L.
The pair of inner walls 204 protrude from the side wall 201 in the direction of the axis L and are opposed to each other at a predetermined interval in parallel with the predetermined direction H.
The pair of inner walls 204 define two wall surfaces 204a with which the two rolling elements 260 held by the holder member 250 are movably contacted.
The inner wall 205 is formed as a vertical wall that protrudes from the side wall 201 in the direction of the axis L and continues to the pair of inner walls 204.
The inner wall 205 defines a bearing hole 205 a that rotatably supports the rotating member 290 and a spring receiving portion 205 b that receives an end of the biasing spring 280.
The fixing wall 206 is formed to fix the motor case 231 of the driving source 230 by fitting or screwing in order to fix the driving source 230 to the housing body 200a.
The spring receiving portion 207 is formed to receive the end portion of the return spring 220.

The cover body 200b includes a housing portion 208 that houses the position sensor S and the control unit 300, and a connector 209 that electrically connects the wiring on the vehicle side.
The connector 209 may be provided on the housing body 200a side.
The cover body 200b is formed so as to cover the entire area except for the lower region of the pedal arm 210 in a state where the pedal arm 210, the return spring 220, the operation suppression unit U3 and the like are mounted on the housing body 200a.

The pedal arm 210 is formed of a resin material, and includes a cylindrical portion 211, an accelerator pedal 212, an upper end portion 213, contact portions 214 and 215, and a spring receiving portion 216.
The cylindrical portion 211 is fitted to the support shaft 203 of the housing body 200a so that the pedal arm 210 is supported so as to be rotatable about the axis L.
The accelerator pedal 212 is integrally formed by extending downward from the cylindrical portion 211 so that the driver can step on the foot.

The upper end portion 213 is formed integrally with the cylindrical portion 211 so as to be detachably engaged with the flange portion 241 of the first moving member 240.
The abutting portion 214 is formed in the vicinity of the upper end portion 213 so as to detachably abut against the pause stopper 202a.
The abutting portion 215 is formed in the vicinity of the lower portion of the cylindrical portion 211 so as to detachably abut on the fully open stopper 202b.

The return spring 220 is a compression type coil spring formed of spring steel or the like, and has one end abutted against the spring receiving portion 216 of the pedal arm 210 and the other end abutted against the spring receiving portion 207 of the housing body 200a. Has been placed.
The return spring 220 directly exerts an urging force that returns the pedal arm 210 to the rest position.

  Thus, since the return spring 220 directly engages the pedal arm 210 and exerts an urging force, even if the operation suppression mechanism RM3 or the like is locked and a malfunction occurs, the pedal arm 210 is brought to the rest position. It can be reliably returned and safety is guaranteed.

The drive source 230 is a DC motor that generates a rotational driving force in one direction and the other direction, and includes a motor case 231 and a pinion 232 fixed to a drive shaft protruding from the motor case 231.
The drive source 230 is fixed to the body 200 by screwing or fitting to the fixed wall 206 of the housing body 10a.
The drive source 230 generates a rotational driving force in one direction when energized in one direction, and generates a rotational driving force in the other direction when energized in the other direction.

  The first moving member 240 is formed in a cylindrical shape extending in the direction of the axis H1, and has a disc-shaped flange 241 formed at one end, a male screw 242 formed on the outer peripheral surface, and an opening at the other end. A spline fitting hole 243 formed on the inner peripheral surface, and a through hole 244 penetrating from the spline fitting hole 243 to the flange portion 241 are provided.

The flange portion 241 is formed so that the contact portion 213 of the pedal arm 210 is detachably contacted and is detachably fitted to the recess 252 of the holder member 250.
The male screw 242 is screwed with the female screw 271 of the second moving member 270.
The spline fitting hole 243 can fit the spline shaft portion 291 of the rotating member 290 so as to be movable in a predetermined direction H (axis H1 direction) and transmit the rotation of the rotating member 290 to the first moving member 240 around the axis H1. It is formed to be.
The through hole 244 is formed so as to always open when the contact portion 213 is in contact with the flange portion 241, and allows air to pass therethrough so as not to generate a differential pressure between the inside and the outside of the spline fitting hole 243. It functions as an air hole.
The first moving member 240 is supported so as to be movable in a predetermined direction H (axis H1 direction) in conjunction with the operation of the pedal arm 210.

As shown in FIGS. 24 and 26, the holder member 250 includes a through hole 251, a recess 252, an opening 253, an abutting part 254, an abutting part 255, and a spring receiving part 256.
The through hole 251 is formed so as to allow the first moving member 240 to move freely in the direction of the axis H1.
The concave portion 252 is formed so as to receive and contact the flange portion 241 of the first moving member 240.
The opening 253 is formed in a substantially rectangular shape so as to receive the rolling element 260 so as to be able to roll with a predetermined gap, and holds the rolling element 260 within a predetermined movement range.

The contact portion 254 is detachable from the rolling element 260 so as to press the rolling element 260 toward the engaging part 273 of the second moving member 270 in the moving direction (predetermined direction H) of the first moving member 240. It is formed so that it can touch.
The abutting portion 255 releasably abuts against the rolling element 260 so as to press the rolling element 260 toward the pressing part 272 of the second moving member 270 in the moving direction (predetermined direction H) of the first moving member 240. Shaped to get.

That is, in the predetermined direction H, the holder member 250 is formed so as to sandwich the second moving member 270 from both sides with a predetermined gap and sandwich the rolling element 260 from both sides with a predetermined gap.
The holder member 250 holds the rolling element 260 that is movably in contact with the wall surface 204a of the body 200, and is supported to be movable in a predetermined direction H (axis H1 direction) with respect to the first moving member 240. Yes.

The rolling element 260 functions as a contact portion, and is a cylindrical roller having an axis perpendicular to the axis H1.
The rolling element 260 is inserted into the opening 253 of the holder member 250 and is held so as to move in the predetermined direction H together with the holder member 250 while the movement range is restricted.
In other words, the rolling element 260 comes into contact with the wall surface 204a of the body 200 and also comes into contact with the pressing portion 272 or the engaging portion 273 of the second moving member 270 so as to be detachable.

The second moving member 270 is formed in a shape such that the upper surfaces of two trapezoidal blocks each having a trapezoidal cross section are joined to each other, and has a female screw 271 having a center line located on the axis H1, a pressing portion 272, and an engagement. Part 273 is provided.
Further, the second moving member 270 is not rotatable about the axis H1 through the rolling element 260 so that the relative position in the predetermined direction H (axis H1 direction) can be adjusted with respect to the first moving member 240. Is supported by the body 200.
The second moving member 270 may be formed so as to be in contact with the side wall 201 of the housing body 200a and the side wall of the cover body 200b, and may be held so as not to rotate about the axis H1.

The female screw 271 is screwed with the male screw 242 of the first moving member 240.
The pressing portion 272 is formed as a first inclined surface 272a that sandwiches the rolling element 260 in a wedge shape in cooperation with the wall surface 204a of the body 200.
Here, the inclination angle θ of the first inclined surface 272a is formed to satisfy θ ≧ tan ⁻¹ μ, where μ is the friction coefficient between the rolling elements 260 and the pressing portion 272.

Thereby, when the pressing part 272 cooperates with the wall surface 204a of the body 200 and pinches the rolling element 260, the rolling element 260 can be reliably locked in the case of the predetermined pedaling force FL or less.
The pressing portion 272 presses the rolling element 260 toward the wall surface 204a of the body 200 by one-way driving of the driving source 230 to lock the rolling element 260, and the predetermined pedaling force via the first moving member 240. The depression operation of the pedal arm 210 below the FL is locked.

The engaging portion 273 is formed as a second inclined surface 273a that is inclined in the direction opposite to the first inclined surface 272a of the pressing portion 272.
The second inclined surface 273a is formed at a larger inclination angle than the first inclined surface 272a.
Then, the engaging portion 273 (second inclined surface 273a) cooperates with the wall surface 204a of the body 200 and sandwiches the rolling element 260 in a wedge shape during normal stepping and returning operations of the pedal arm 210. Acts and generates frictional force.
This frictional force acts in the opposite direction to the depression direction when the pedal arm 210 is depressed, and acts in the opposite direction to the return direction when the pedal arm 210 is returned.
Therefore, in the pedaling force of the pedal arm 210, as shown by the solid line in FIG. 12, a hysteresis characteristic can be obtained in the pedaling force.

The urging spring 280 is a compression type coil spring formed of spring steel or the like, and has one end abutted against the spring receiving portion 256 of the holder member 250 and the other end abutting against the spring receiving portion 205b of the housing body 200a. It is placed in contact.
The urging spring 280 generates an urging force that returns the first moving member 240 to a position corresponding to the rest position of the pedal arm 210 via the holder member 250.

The rotating member 290 is formed to extend in the direction of the axis H1, and is rotatably supported by a spline shaft portion 291 having a plurality of grooves extending in the direction of the axis H1 on the outer peripheral surface and a bearing hole 205a of the housing body 200a. The shaft portion 292 is provided.
A gear 293 is fixed to the shaft portion 292 of the rotating member 290.
The rotating member 290 has the spline shaft portion 291 fitted in the spline fitting hole 243 of the first moving member 240 so as to be relatively movable in a predetermined direction H (axis H1 direction) and around the axis H1. The first moving member 240 is assembled so as to rotate integrally therewith.

As described above, the relative movement of both in the predetermined direction H is interposed between the rotating member 290 and the first moving member 240 by the spline shaft portion 291 of the rotating member 290 and the spline fitting hole 243 of the first moving member 240. A rotation transmission structure that transmits only the rotation around the axis H1 is configured.
Further, the male screw 242 of the first moving member 240 and the female screw 271 of the second moving member 270 are interposed between the first moving member 240 and the second moving member 270 according to the rotation amount of the first moving member 240. Thus, an engagement structure that causes relative movement of the two in the predetermined direction H is configured.
Further, the rotation member 290, the rotation transmission structure (spline shaft portion 291 and the spline fitting hole 243), and the engagement structure (male screw 242 and female screw 271) allow the first moving member 240 and the second moving member 270 to move. A drive mechanism that causes relative movement in the predetermined direction H is configured therebetween.

  That is, the drive mechanism acts so that the pressing portion 272 presses the rolling element 260 toward the wall surface 204a by one drive of the drive source 230, and the second movement by further driving in one direction of the drive source 230. A predetermined direction H is provided between the first moving member 240 and the second moving member 270 so as to push back the first moving member 240 in a direction against the stepping force (operation force) in a state where the member 270 is locked. Causes relative movement.

  Thus, by adopting a rotation transmission structure, an engagement structure, or the like as the drive mechanism, the operation suppression mechanism RM3 can be reduced in size and size. Therefore, the body 200 can be downsized while the operation suppressing mechanism RM3 is mounted, and the accelerator pedal device can be made compact and downsized as a whole.

The position sensor S is disposed in the cylindrical portion 211 of the pedal arm 210 and the accommodating portion 208 of the cover body 200b in a region around the axis L of the pedal arm 210.
The position sensor S is, for example, a non-contact magnetic sensor, and is a pair of arcuate armatures made of a magnetic material provided in the region of the cylindrical portion 211 of the pedal arm 210 and an arcuate pair coupled to the inner peripheral surface of the armature. Permanent magnets, two stators made of a magnetic material embedded in the cover body 200b, and two Hall elements disposed between the two stators.

As other related components, terminals, circuit boards on which various electronic components are mounted, and the like are provided.
The position sensor S detects a rotation angle position of the pedal arm 210 by detecting a change in the magnetic flux density by a Hall element and outputting it as a voltage signal when the pedal arm 210 rotates.
In the state where the accelerator pedal device having the above-described configuration is mounted on a vehicle, as shown in FIG. 6, the drive source 230 is applied and the drive is controlled by the control system CS.

Next, the operation of this accelerator pedal device will be described.
First, when the driver is at a rest position where the accelerator pedal 212 is not depressed, the abutting portion 214 of the pedal arm 210 abuts against the rest stopper 202a by the urging force of the return spring 220 and the urging spring 280. Stops at a rest position indicated by a solid line in FIG. 23, and the drive source 230 is in a non-energized state.
In this rest position, as shown in FIG. 27, the upper end 213 of the pedal arm 210 abuts on the flange 241 of the first moving member 240, and the flange 241 engages the recess 252 of the holder member 250, The contact portion 254 of the holder member 250 presses the rolling element 260 toward the engagement portion 273 of the second moving member 270.

When the driver depresses the accelerator pedal 212 from this state, the pedal arm 210 rotates counterclockwise against the urging force of the return spring 220 and the urging spring 280 as shown in FIG.
The first moving member 240 moves in the F direction with respect to the rotating member 290 by the rotation of the pedal arm 210 accompanying the stepping operation.
At this time, since the second moving member 270 is screwed with the first moving member 240, the holder member 250 is pressed by the flange portion 241, and the rolling element 260 is pressed by the contact portion 254, the second movement The member 270, the holder member 250, and the rolling element 260 move in the F direction integrally with the first moving member 240.

Then, the pedal arm 210 is stepped on, and the contact portion 215 contacts the fully open stopper 202b, and stops at the maximum depressed position (full open position) indicated by a two-dot chain line in FIG.
Thereby, the normal depression operation of the pedal arm 210 is performed.

On the other hand, when the driver loosens the pedaling force, the pedal arm 210 rotates clockwise toward the rest position by the biasing force of the return spring 220 and the biasing spring 280, and the contact portion 214 contacts the stop stopper 202a. Stop.
In this returning operation, since the upper end 213 is in contact with the flange 241, the first moving member 240, the second moving member 270, the holder member 250, and the rolling element are maintained while the state shown in FIG. 28 is maintained. 260 moves integrally in the B direction.
As described above, when the pedal arm 210 is normally depressed and returned, a hysteresis characteristic as indicated by the solid line in FIG. 12 can be obtained in the pedaling force of the pedal arm 210.

By the way, when the driver depresses the accelerator pedal 212, for example, when performing control to suppress the depression in order to save excessive acceleration energy due to excessive depression, the operation suppression mechanism RM3 moves as shown in FIG. At a desired position within the range, an operation of locking the depression operation of the pedal arm 210 with a predetermined depression force FL or less is performed by driving in one direction of the drive source 230.
That is, the drive source 230 is driven in one direction at a desired timing based on, for example, a sensor signal that detects that the driver is in a posture to depress the accelerator pedal 212.
When the rotating member 290 and the first moving member 240 rotate in one direction through the pinion 232 and the gear 293 by driving the driving source 230 in one direction, as shown in FIG. 29, the second moving member 270 is moved to the first direction. It moves relative to the moving member 240 in the F direction.

Then, the pressing portion 272 (first inclined surface 272a) engages with the rolling element 260 and presses the rolling element 260 toward the wall surface 204a so as to sandwich the rolling element 260 in a wedge shape.
As a result, the rolling element 260 is locked so as not to move, and the first moving member 240 is locked so as not to move relative to the body 200 unless a pedaling force exceeding a predetermined pedaling force FL that breaks this locked state is exerted. It becomes.

  When the first moving member 240 is locked, the pedal arm 210 also cannot rotate. That is, the load (reaction force) on the treading force increases rapidly, and the driver feels that he or she steps on the wall (wall feeling), and the stepping operation is restricted. Therefore, rapid acceleration and the like are prevented, and fuel consumption and the like are improved.

  At this time, the position P at which the locked state is formed, that is, the position P at which the load (generated force) is suddenly increased is selected based on a predetermined control signal as shown in FIG. In addition, any desired position can be selected within the operating range of the pedal arm 210 (between the rest position and the maximum depression position).

  Further, in the case where the driver does not depress the accelerator pedal 212 and is in the automatic driving mode (automatic driving control mode), the driving source 230 is driven in one direction at the rest position to form the locked state described above. The pedal 212 can be used as a footrest (footrest). Thereby, a driver | operator's fatigue can be relieved.

This locked state is established when the pressing portion 272 (first inclined surface 272a) presses the rolling element 260 toward the wall surface 204a and is equal to or less than a predetermined pedaling force FL.
Therefore, when the accelerator pedal 212 is depressed with a depressing force exceeding a predetermined depressing force FL, the rolling element 260 moves relative to the wall surface 204a, and the load (reaction force) increases as shown in FIG. The pedal arm 210 can be depressed.
Therefore, when the driver wants to perform the depression operation against the load, the depression operation of the pedal arm 210 can be performed according to his / her intention by applying a depression force exceeding the predetermined depression force FL.
The lock state is released by moving the second moving member 270 relative to the first moving member 240 in the B direction by driving in the other direction of the drive source 230.

Further, for example, when the driver keeps stepping on the accelerator pedal 212 even though the vehicle is approaching the front vehicle, as shown in FIG. 30, the brake pedal is started from the state where the accelerator pedal 212 is depressed. Distance control is performed in order to encourage a change to
That is, the operation suppression mechanism RM3 performs an operation of pushing back the pedal arm 210 against the pedaling force by further driving in one direction of the drive source 230 after causing the above-described locked state at a desired position within the movement range. Is called.
In this control, the drive source 230 is further driven in one direction based on a control signal at a desired timing.

Since the second moving member 270 is already in the locked state via the rolling element 260, the rotation member 290 and the first moving member 240 are moved via the pinion 232 and the gear 293 by further driving in one direction of the driving source 230. Rotating in one direction, as shown in FIG. 30, only the first moving member 240 moves relatively in the B direction.
Then, when the first moving member 240 moves in the B direction, the pedal arm 210 is pushed back toward the rest position against the driver's stepping force. Thereby, desired distance control can be performed.
In this return drive, the return speed can be adjusted as appropriate by controlling the driving force of the drive source 230.

In this operation, as shown in FIG. 30, the flange 241 is detached from the recess 252 and the holder member 250 is released from the first moving member 240.
Therefore, the holder member 250 moves in the B direction by the biasing force of the biasing spring 280. Thus, when the holder member 250 moves in the B direction, the contact portion 255 of the holder member 250 contacts the rolling element 260 and presses the rolling element 260 against the pressing portion 272 (first inclined surface 272a). .
Thereby, the locked state of the second moving member 270 becomes stronger, and the depression operation of the accelerator pedal 212 is further suppressed.

  That is, by providing the operation suppression mechanism RM3 having the above-described configuration, the pedal arm 210 can be depressed in a desired position within the movement range of the pedal arm 210 by driving the drive source 230 in one direction at a predetermined pedaling force FL or less. In addition, the pedal arm 210 can be pushed back against the pedaling force by further driving in one direction of the driving source 230, and the pedaling operation of the pedal arm 210 can be suppressed.

  Here, one drive source 230 is configured to exert a driving force on the operation suppression mechanism RM3, so that the position that generates a load (lock state) that promotes operation suppression as well as the function as a power source is operated. A function that can be set at any desired position within the range and a function that can appropriately adjust the load (return speed) for the stepping operation can be used.

As described above, in the above embodiment, as the first moving member, the first moving members 5 and 240 that move linearly in the predetermined direction H, the ring gear 100 that rotates around the axis L2, and the second moving member. Although the second moving members 6 and 270 moving linearly in the predetermined direction H and the carrier 110 rotating around the axis L2 are shown, the present invention is not limited to this.
For example, as the first moving member, the second moving member, and the driving member, members that reciprocate in an arc shape may be employed, or other members that perform movement may be employed.

In the first to fourth embodiments, the cylindrical contact portion 5c fixed to the first moving member 5 is shown as the contact portion. However, the present invention is not limited to this, and the first moving member is not limited thereto. Alternatively, a rolling element supported so as to roll freely may be employed.
Further, a contact portion fixed to the ring gear 100 may be adopted instead of the rolling element 140, or a contact portion fixed to the holder member 250 may be adopted instead of the rolling element 260.

  In the first to seventh embodiments, the case where the return springs 3 and 30 are employed has been shown. However, the return operation of the pedal arms 2 and 20 is guaranteed by the return drive force of the drive sources 4 and 50 and the like. As long as the return springs 3 and 30 are eliminated, a configuration may be adopted.

  In the fifth embodiment and the sixth embodiment, the case where the urging spring 40 is employed has been described. However, the present invention is not limited to this, and the ring gear 100 is rested by the return driving force of the driving source 50 or the like. As long as it is guaranteed to return to the position corresponding to, a configuration in which the biasing spring 40 is eliminated may be employed.

  In the said 5th Embodiment and 6th Embodiment, although the case where the interlock mechanism 60,70 was employ | adopted was shown, it is not limited to this, You may employ | adopt another interlock mechanism and a deceleration mechanism, Or you may employ | adopt the structure which abolished the interlocking mechanism and the deceleration mechanism.

In the seventh embodiment, the second moving member 270 having a rectangular cross section as the second moving member, the holder member 250 having a rectangular cross section as the holder member, and the cylindrical rolling element 260 as the contact portion are shown. It is not limited.
If the rotation of the second moving member around the axis H1 is restricted, for example, a second moving member having a disk shape and an annular groove having a substantially V-shaped cross section on the outer periphery, and an annular holder member are employed. A plurality of spheres arranged in the circumferential direction about the axis H1 may be adopted as the contact portion.

In the drive mechanism of the seventh embodiment, the configuration in which the spline shaft portion 291 formed in the rotating member 290 and the spline fitting hole 243 formed in the first moving member 240 are employed as the rotation transmission structure, It is not limited to this.
As another rotation transmission structure, for example, a plurality of pins projecting in the radial direction in the rotating member and a fitting hole and a pin in the first moving member that can movably fit the rotating member in the axis H1 direction are arranged in the axis H1 direction. A structure including a plurality of slits (long grooves) for guiding only, or a cross section of the rotating member is formed in a non-circular irregular cross section (polygonal cross section such as pentagon, hexagon, etc.), and the rotating member is arranged on the axis H1 in the first moving member. You may employ | adopt the structure which formed the cross section of the fitting hole similarly movably fitted to a direction in the unusual cross section other than a circle.

Further, in the drive mechanism of the seventh embodiment, the configuration in which the male screw 242 formed on the first moving member 240 and the female screw 271 formed on the second moving member 270 are employed as the engaging structure is shown. However, the present invention is not limited to this.
As another engagement structure, for example, a configuration including a spiral cam groove formed on the outer peripheral surface of the first moving member and a cam follower such as a pin formed on the second moving member to be engaged with the cam groove is adopted. May be.

  The operation suppression mechanism included in the operation suppression units U1, U2, and U3 of the above-described embodiment locks the operation of the operation member with a predetermined operation force FL or less by driving in one direction of the drive sources 4, 50, and 230. An operation suppression mechanism RM1 that suppresses the operation of the operation member by pushing back the operation member (pedal arm 2, 20, 210) against the operation force by further driving in one direction of the sources 4, 50, 230 or driving in the other direction. , RM2 and RM3 are shown, but not limited thereto.

  For example, in the operation of the operation member, if the operation is suppressed or locked by causing a wall feeling (feeling of stepping on a wall), the operation suppression mechanism may be a predetermined operation force FL by driving the drive source in one direction. A configuration in which the operation of the operation member is locked to suppress the operation of the operation member in the following may be adopted, and a load corresponding to the driving force of the drive source is generated in order to adjust the level of the wall feeling. A configuration that suppresses the operation of the operation member may be employed.

Therefore, in the operation suppression mechanisms RM1 and RM2, the push-back portions 6b, 113, and 114 may be omitted when only a wall feeling is generated in the operation of the operation member. Further, in the drive mechanism, there is no configuration in which the push-back portions 6b, 113, 114 act to push back the first moving members 5, 100 in the direction against the operating force by driving in the other direction of the drive sources 4, 50. Also good.
Similarly, in the operation suppression mechanism RM3, when only a wall feeling is caused in the operation of the operation member, the drive mechanism resists the operation force by further driving the drive source 230 in one direction. There may be no configuration that acts to push back in the direction.

  As described above, in the accelerator pedal device to which the operation suppression unit of the present invention is applied, one drive source exerts a driving force on the operation suppression mechanism, thereby promoting the operation suppression as well as the function as a power source. It is possible to combine a function capable of setting a position for generating a load (reaction force) at a desired arbitrary position within the operating range and a function capable of appropriately adjusting a load (reaction force, return speed) with respect to the stepping operation. Therefore, it is possible to improve the operability of the driver while achieving simplification of the structure, reduction of the number of parts, cost reduction, etc., and distance control can be performed, so that it can be applied to automobiles and the like. This is also useful for motorcycles and other vehicles.

1 Body (fixing member)
2 Pedal arm (operation member)
2b Accelerator pedal 3 Return spring U1 Operation suppression unit RM1 Operation suppression mechanism 4 Drive source H Predetermined direction 5 First moving member 5c Contact portion 6 Second moving member 6a Pressing portion 6a1 First inclined surface 6b Pushing back portion 6b2 Second inclined surface 7 Interlocking member (drive mechanism)
8 Drive member (drive mechanism)
9 Biasing springs L, L2 Axis 10 Body (fixing member)
10a housing body 20 pedal arm (operation member)
22 Accelerator pedal 30 Return spring 40 Biasing spring U2 Operation suppression unit RM2 Operation suppression mechanism 50 Drive source 60, 70 Interlocking mechanism (deceleration mechanism)
DESCRIPTION OF SYMBOLS 100 Ring gear 110 Carrier 112 Press part 112a 1st inclined surface 113 Push-back part 114 Push-back part 114a 2nd inclined surface 120 Planetary gear 130 Sun gear 140 Rolling body (contact part)
U3 operation suppression unit RM3 operation suppression mechanism 200 body (fixing member)
200a Housing body 204a Wall surface 210 Pedal arm (operation member)
230 Drive source 240 First moving member H1 Axis 242 Male thread (engagement structure, drive mechanism)
243 Spline fitting hole (rotation transmission structure, drive mechanism)
250 Holder member 254 Contact part 260 Rolling body (contact part)
270 Second moving member 271 Female screw (engagement structure, drive mechanism)
272 Pressing portion 272a First inclined surface 273 Engaging portion 273a Second inclined surface 280 Biasing spring 290 Rotating member (drive mechanism)
291 Spline shaft (rotation transmission structure, drive mechanism)
CS control system S position sensor 300 control unit (control means)
330 operation state detection circuit (operation state detection means)

Claims (29)

A driving source that generates a driving force in one direction and the other direction;
An operation suppressing mechanism that locks the operation of the operation member with a predetermined operation force or less by driving in one direction of the drive source and suppresses the operation of the operation member;
Including an operation suppression unit. The operation suppression mechanism generates a load corresponding to the driving force of the drive source to suppress the operation of the operation member;
The operation suppressing unit according to claim 1. The operation suppression mechanism suppresses the operation of the operation member by pushing back the operation member against an operation force by further driving in one direction of the drive source or driving in the other direction.
The operation suppressing unit according to claim 1. The operation suppression mechanism generates a load corresponding to the driving force of the drive source to suppress the operation of the operation member;
The operation suppression unit according to claim 3. The operation suppression mechanism is
A fixing member fixed in place;
A first moving member that has a contact portion that is movably in contact with the fixed member and moves in a predetermined direction in conjunction with an operation of the operating member;
A second moving member having a pressing portion that is capable of adjusting a relative position in the predetermined direction with respect to the first moving member and that locks the contact portion while pressing the contact portion toward the fixing member;
A driving mechanism that causes relative movement in the predetermined direction between the first moving member and the second moving member so that the pressing portion acts by driving in one direction of the driving source.
The operation suppression unit according to claim 1 or 2, wherein The operation suppression mechanism is
A fixing member fixed in place;
A first moving member that has a contact portion that is movably in contact with the fixed member and moves in a predetermined direction in conjunction with an operation of the operating member;
The relative position in the predetermined direction can be adjusted with respect to the first moving member, and the pressing portion that locks the contact portion while pressing the contact portion toward the fixing member and the first moving member resists operating force. A second moving member having a push-back portion that pushes back in the direction;
The predetermined portion is interposed between the first moving member and the second moving member so that the pressing portion acts by driving the driving source in one direction and the pushing back portion acts by driving in the other direction of the driving source. A drive mechanism that causes relative movement in the direction,
The operation suppression unit according to claim 3 or 4, characterized by the above. The drive mechanism is
A drive member that is driven when the drive source is driven and movable when not driven;
An interlocking member that is held by the two moving members and interlocks with the driving member and the first moving member.
The operation suppression unit according to claim 5 or 6. The operation suppression mechanism is
Including a biasing spring that generates a biasing force to return the first moving member to a position corresponding to a rest position of the operation member;
The operation suppressing unit according to claim 5, wherein the operation suppressing unit is a unit. The operation suppression mechanism is
A fixing member fixed in place;
A ring gear that has a contact portion that is movably in contact with the fixed member and rotates about a predetermined axis in conjunction with the operation force of the operation member;
A sun gear capable of rotating about the axis and driven by the drive source;
A carrier having a pressing portion that can rotate around the axis and locks the contact portion while pressing the contact portion toward the fixing member by driving in one direction of the driving source;
A planetary gear held by the carrier and meshing with the sun gear and the ring gear,
The operation suppression unit according to claim 1 or 2, wherein The operation suppression mechanism is
A fixing member fixed in place;
A ring gear that has a contact portion that is movably in contact with the fixed member and rotates about a predetermined axis in conjunction with the operation force of the operation member;
A sun gear capable of rotating about the axis and driven by the drive source;
The ring gear can be operated by driving in the other direction of the driving source and the pressing portion that can be rotated around the axis and is locked while pressing the contact portion toward the fixing member by driving the driving source in one direction. A carrier having a push-back portion that rotates in a direction against the force and pushes it back;
A planetary gear held by the carrier and meshing with the sun gear and the ring gear,
The operation suppression unit according to claim 3 or 4, characterized by the above. The operation suppression mechanism is
Including a biasing spring that generates a biasing force for returning the ring gear to a position corresponding to a rest position of the operation member;
The operation suppressing unit according to claim 9 or 10, characterized in that The operation suppression mechanism is
A fixing member fixed in place;
A first moving member that moves in a predetermined direction in conjunction with an operation of the operating member;
A holder member that has a contact portion that is movably in contact with the fixed member and is movably supported with respect to the first moving member;
A second moving member having a pressing portion that is adjustable with respect to the first moving member and that locks the contact portion while pressing the contact portion toward the fixing member;
An urging spring for generating an urging force for returning the first moving member to a position corresponding to a rest position of the operation member;
A driving mechanism that causes relative movement in the predetermined direction between the first moving member and the second moving member so that the pressing portion acts by driving in one direction of the driving source.
The operation suppressing unit according to claim 1. The operation suppression mechanism is
A fixing member fixed in place;
A first moving member that moves in a predetermined direction in conjunction with an operation of the operating member;
A holder member that has a contact portion that is movably in contact with the fixed member and is movably supported with respect to the first moving member;
A second moving member having a pressing portion that is adjustable with respect to the first moving member and that locks the contact portion while pressing the contact portion toward the fixing member;
An urging spring for generating an urging force for returning the first moving member to a position corresponding to a rest position of the operation member;
The first moving member is configured so that the pressing portion acts by driving the driving source in one direction and pushes back the first moving member in a direction against an operating force by further driving in one direction of the driving source. A drive mechanism that causes relative movement in the predetermined direction between the second moving members,
The operation suppression unit according to claim 3. The operation suppression mechanism is
Including an engaging portion provided on the second moving member to press the contact portion pressed via the first moving member toward the fixing member;
The operation suppression unit according to claim 12 or 13, characterized by the above. The drive mechanism is a rotation member that is rotationally driven by the drive source, and a rotation that is interposed between the rotation member and the first moving member and transmits only rotation while allowing relative movement of both in the predetermined direction. A transmission structure, and an engagement structure that is interposed between the first moving member and the second moving member to cause relative movement of the two in the predetermined direction according to the amount of rotation.
The operation suppression unit according to claim 12, wherein the operation suppression unit is a unit. The rotation transmission structure includes a spline shaft portion formed in the rotation member and a spline fitting hole formed in the first moving member so that the spline shaft portion is fitted therein,
The engagement structure includes a male screw formed on the first moving member and a female screw formed on the second moving member to be screwed to the male screw.
The operation suppressing unit according to claim 15. The second moving member is held by the fixed member so as not to rotate around the axis of the first moving member.
The operation suppressing unit according to claim 15 or 16, characterized in that The holder member is formed so as to sandwich the second moving member from both sides with a predetermined gap and sandwich the contact portion from both sides with a predetermined gap in the predetermined direction.
The operation suppression unit according to any one of claims 12 to 17, wherein The holder member includes a contact portion that can contact the contact portion so as to press the contact portion toward the engagement portion in the predetermined direction.
The operation suppressing unit according to claim 14. The pressing portion is formed as a first inclined surface that cooperates with the fixing member and sandwiches the contact portion in a wedge shape.
The operation suppression unit according to any one of claims 5, 9, 12, and 13, The pressing portion is formed as a first inclined surface that sandwiches the contact portion in a wedge shape in cooperation with the fixing member,
The push-back portion is formed as a second inclined surface having a larger inclination angle than the first inclined surface in order to sandwich the contact portion in a wedge shape in cooperation with the fixing member during normal operation of the operation member. ing,
The operation suppression unit according to claim 6 or 10, wherein The pressing portion is formed as a first inclined surface that sandwiches the contact portion in a wedge shape in cooperation with the fixing member,
The engaging portion is formed as a second inclined surface having a larger inclination angle than the first inclined surface so as to sandwich the contact portion in a wedge shape in cooperation with the fixing member during normal operation of the operating member. Being
The operation suppressing unit according to claim 14. The inclination angle θ of the first inclined surface is, when the friction coefficient between the contact portion and the pressing portion is μ,
θ ≧ tan ⁻¹ μ
Meet,
The operation suppression unit according to claim 21 or 22, wherein The contact portion is a rolling element that rolls in contact with the fixing member.
The operation suppressing unit according to any one of claims 5, 6, 9, 10, 12, and 13. A pedal arm as an operating member having an accelerator pedal;
A body as a fixing member that rotatably supports the pedal arm within a predetermined movement range;
An operation suppression unit that suppresses the operation of the pedal arm;
The operation suppression unit is the operation suppression unit according to any one of claims 1 to 24.
An accelerator pedal device characterized by that. A drive source of the operation suppression unit is fixed to the body,
The operation suppression mechanism of the operation suppression unit is at a desired position within the movement range,
The operation of the pedal arm is suppressed by locking the stepping operation of the pedal arm at a predetermined pedaling force or less by driving in one direction of the driving source, or
The one-way driving of the driving source locks the pedal arm stepping operation below a predetermined pedaling force, and the driving source pushes back the pedal arm against the pedaling force by further driving in one direction or driving in the other direction. To suppress the operation of the pedal arm,
26. The accelerator pedal device according to claim 25. The operation suppressing mechanism generates a load corresponding to the driving force of the driving source to suppress the stepping operation of the pedal arm;
27. The accelerator pedal device according to claim 26. A return spring that exerts a biasing force to return the pedal arm to the rest position;
The accelerator pedal device according to any one of claims 25 to 27, wherein: A control system for controlling an accelerator pedal device according to any one of claims 25 to 28 mounted on a vehicle,
A position sensor that detects a rotation angle position of a pedal arm included in the accelerator pedal device, an operation state detection unit that detects an operation state, and the operation suppression unit based on information of the position sensor and the operation state detection unit. Control means for driving and controlling the drive source,
A control system characterized by that.

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