Throttle device

Abstract

The present invention provides a throttle device. The throttle device (1-7) comprises a pedal rod (20), at least one drive source (40, 41, 201), a power transmission mechanism (50, 60, 70, 80, 90, 100, 120, 124, 126, 130, 140, 145, 150, 200), and a locking mechanism (501-511). The pedal rod moves according to a stepping operation. The drive source can apply a force in a return direction, i.e., a reaction force, to the pedal rod. The power transmission mechanism can transmit the driving force of the drive source to the pedal rod. The locking mechanism can limit the movement of the pedal rod.

Description

[0001] Cross-references between related applications

[0002] This application is based on Japanese Patent Application No. 2020-044241 and Japanese Patent Application No. 2020-044607 filed on March 13, 2020, and the contents thereof are incorporated herein by reference. Technical Field

[0003] The invention relates to a throttle device. Background Art

[0004] Conventionally, there are known accelerator pedal modules equipped with actuators. For example, in Patent Document 1, an actuator driven by a solenoid engages with a rotating member to apply force in the return direction.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: U.S. Patent Application Publication No. 102014118573 Summary of the Invention

[0008] However, Patent Document 1 includes a rotating component driven by an actuator, resulting in a relatively large device. Furthermore, if a mechanism is provided to secure the accelerator pedal when operation of the accelerator pedal is not required, such as in automated driving, the device would be even larger and potentially complex. The present invention aims to provide a throttle device that can apply a reaction force to a pedal rod and limit the movement of the pedal rod.

[0009] The throttle device of the present invention includes a pedal rod, at least one drive source, a power transmission mechanism, and a locking mechanism. The pedal rod moves in response to a stepping operation. The drive source generates a driving force capable of driving the pedal rod in a return direction. The power transmission mechanism transmits the driving force from the drive source to the pedal rod. The locking mechanism is capable of limiting the movement of the pedal rod. This allows a reaction force to be applied to the pedal rod, and the movement of the pedal rod can be appropriately limited as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above-mentioned objects and other objects, features and advantages of the present invention will become more apparent through the following detailed description with reference to the accompanying drawings.

[0011] Figure 1 It is a side view of the throttle device of the first embodiment;

[0012] Figure 2 1. A side view showing a state in which a pedal lever is depressed and a reaction force is applied to the accelerator device according to the first embodiment;

[0013] Figure 3is a side view showing a pedal locked state in the accelerator device according to the first embodiment;

[0014] Figure 4 It is a side view of the throttle device of the second embodiment;

[0015] Figure 5 is a side view showing a state in which a pedal lever is depressed and a reaction force is applied in the accelerator device according to the second embodiment;

[0016] Figure 6 is a side view showing a pedal locked state of the accelerator device according to the second embodiment;

[0017] Figure 7 It is a side view of the throttle device of the third embodiment;

[0018] Figure 8 1. A side view showing a state in which a pedal lever is depressed and a reaction force is applied to the accelerator device according to the third embodiment;

[0019] Figure 9 is a side view showing a pedal locked state in the accelerator device according to the third embodiment;

[0020] Figure 10 It is a side view of the throttle device of the fourth embodiment;

[0021] Figure 11 1. A side view showing a state in which a pedal lever is depressed and a reaction force is applied to the accelerator device according to the fourth embodiment;

[0022] Figure 12 is a side view showing a pedal locked state in the accelerator device according to the fourth embodiment;

[0023] Figure 13 It is a side view of the throttle device of the fifth embodiment;

[0024] Figure 14 1. It is a side view showing a state in which a pedal lever is depressed and a reaction force is applied in the accelerator device according to the fifth embodiment;

[0025] Figure 15 1. It is a side view showing a pedal locked state in the accelerator device according to the fifth embodiment;

[0026] Figure 16 It is a side view of the throttle device of the sixth embodiment;

[0027] Figure 17 1 is a side view showing a state in which a pedal rod is stepped on and a reaction force is applied in a sixth embodiment;

[0028] Figure 181 is a side view showing a pedal locked state in a sixth embodiment;

[0029] Figure 19 is a perspective view of a throttle device according to a seventh embodiment;

[0030] Figure 20 is a side view of a throttle device according to a seventh embodiment;

[0031] Figure 21 yes Figure 20 The XXI-XXI line cross-sectional view;

[0032] Figure 22 yes Figure 20 XXII direction view;

[0033] Figure 23 yes Figure 22 XXIII-XXIII line cross-sectional view;

[0034] Figure 24 yes Figure 22 XXIV-XXIV line cross-sectional view;

[0035] Figure 25 is a perspective view showing a second spur gear, a third spur gear, and a torsion spring according to a seventh embodiment;

[0036] Figure 26 is a perspective view showing a second spur gear, a third spur gear, and a torsion spring according to a seventh embodiment;

[0037] Figure 27 is an exploded perspective view showing a locking member according to a seventh embodiment;

[0038] Figure 28 1 is a side view showing a state before the pedal is locked according to the seventh embodiment;

[0039] Figure 29 yes Figure 28 XXIX-XXIX line cross-sectional view;

[0040] Figure 30 1 is a side view showing a state in which the locking is in progress in the seventh embodiment;

[0041] Figure 31 yes Figure 30 XXXI-XXXI line cross-sectional view;

[0042] Figure 32 1 is a side view showing a pedal locked state in a seventh embodiment;

[0043] Figure 33 yes Figure 32 XXXIII-XXXIII line cross-sectional view;

[0044] Figure 34 is a side view showing a cam retracted state in the seventh embodiment;

[0045] Figure 35 It is a side view of the throttle device of the eighth embodiment;

[0046] Figure 36 Schematic diagram showing a second spur gear, a third spur gear, and a compression coil spring in a ninth embodiment;

[0047] Figure 37A 1 is a diagram illustrating a locking mechanism according to a seventh embodiment, and is a schematic diagram showing a state before locking;

[0048] Figure 37B FIG. 1 is a diagram illustrating a locking mechanism according to a seventh embodiment and is a schematic diagram showing a locked state;

[0049] Figure 38A 10 is a diagram illustrating a locking mechanism according to the tenth embodiment, and is a schematic diagram showing a state before locking;

[0050] Figure 38B 10 is a diagram illustrating a locking mechanism according to the tenth embodiment, and is a schematic diagram showing a state in the middle of locking;

[0051] Figure 38C FIG. 1 is a diagram illustrating a locking mechanism according to a tenth embodiment, and is a schematic diagram showing a locked state;

[0052] Figure 39A 11 is a diagram illustrating a locking mechanism according to the eleventh embodiment, and is a schematic diagram showing a state before locking;

[0053] Figure 39B FIG. 1 is a diagram illustrating a locking mechanism according to an eleventh embodiment, and is a schematic diagram showing a locked state;

[0054] Figure 39C 11 is a diagram illustrating a locking mechanism according to the 11th embodiment, and is a schematic diagram illustrating unlocking;

[0055] Figure 40A 12 is a diagram showing a locking mechanism according to a twelfth embodiment, and is a schematic diagram showing a locked state;

[0056] Figure 40B 12 is a diagram showing a locking mechanism according to a twelfth embodiment, and is a schematic diagram for explaining unlocking;

[0057] Figure 41A 13 is a diagram showing a locking mechanism according to a 13th embodiment, and is a schematic diagram showing a locked state;

[0058] Figure 41B 13 is a diagram showing a locking mechanism according to a 13th embodiment, and is a schematic diagram for explaining unlocking;

[0059] Figure 42A 14 is a diagram showing a locking mechanism according to the fourth embodiment, and is a schematic diagram showing a locked state;

[0060] Figure 42B 14 is a diagram showing a locking mechanism according to the fourteenth embodiment, and is a schematic diagram for explaining unlocking;

[0061] Figure 43A 15 is a diagram showing a locking mechanism according to the fifteenth embodiment, and is a schematic diagram showing a locked state;

[0062] Figure 43B 15 is a diagram showing a locking mechanism according to the fifteenth embodiment, and is a schematic diagram for explaining unlocking;

[0063] Figure 44 is a schematic diagram showing a locking mechanism according to a sixteenth embodiment;

[0064] Figure 45 is a side view showing a power transmission mechanism according to a seventeenth embodiment;

[0065] Figure 46 is a side view showing a power transmission mechanism according to an eighteenth embodiment;

[0066] Figure 47 is a side view showing a power transmission mechanism according to a nineteenth embodiment;

[0067] Figure 48 is a side view showing a power transmission mechanism according to a 20th embodiment;

[0068] Figure 49 is a side view showing a power transmission mechanism according to a twenty-first embodiment;

[0069] Figure 50 22 is a side view showing a power transmission mechanism according to a twenty-second embodiment;

[0070] Figure 51 is a side view showing a power transmission mechanism according to a twenty-third embodiment;

[0071] Figure 52 23 is a side view showing a state in which a pedal rod is stepped on and a reaction force is applied;

[0072] Figure 53 23 is a side view showing a pedal locked state in the embodiment;

[0073] Figure 54 is a schematic diagram illustrating the driving of the pedal rod in the return direction;

[0074] Figure 55 is a schematic diagram illustrating the driving of the pedal rod in the return direction;

[0075] Figure 56A is a schematic diagram illustrating a locking mechanism of a pedal lever;

[0076] Figure 56B is an explanatory diagram illustrating the force applied when the pedal is locked;

[0077] Figure 57 is a schematic diagram illustrating a locking mechanism of a pedal lever;

[0078] Figure 58A 1 is a diagram illustrating a locked position of the pedal lever and is a schematic diagram showing a locked state at a fully closed position;

[0079] Figure 58B 1 is a diagram illustrating a locked position of the pedal lever, and is a schematic diagram showing a locked state at an intermediate position;

[0080] Figure 58C FIG1 is a diagram illustrating a locked position of the pedal lever, and is a diagram showing a locked state at a fully open position;

[0081] Figure 59A is a schematic diagram showing a state in which the pedal rod is connected to the power transmission mechanism in a fully closed state;

[0082] Figure 59B is a schematic diagram showing a state in which the pedal rod is connected to the power transmission mechanism in a fully open state;

[0083] Figure 60A is a schematic diagram showing a state in which the pedal rod abuts against the power transmission mechanism in the fully closed state;

[0084] Figure 60B is a schematic diagram showing a state in which the pedal rod abuts against the power transmission mechanism in a fully open state;

[0085] Figure 61A is a schematic diagram showing that the pedal rod and the power transmission mechanism can be separated in the fully closed state;

[0086] Figure 61B This is a schematic diagram showing that the pedal lever and the power transmission mechanism can be separated in the fully open state. DETAILED DESCRIPTION

[0087] Hereinafter, the throttle device of the present invention will be described with reference to the drawings. In the following, in a plurality of embodiments, substantially the same components are denoted by the same reference numerals and their description will be omitted.

[0088] (First embodiment)

[0089] exist Figures 1 to 3 The first embodiment is shown in FIG. The throttle device 1 is configured to be mountable on a floor (not shown) constituting a part of a vehicle body. Figures 1 to 3 As shown, the throttle device 1 includes a housing 10, a pedal rod 20, a motor 40 as a driving source, and a power transmission mechanism 50. The housing 10 can be mounted on a vehicle body and houses internal movable mechanisms such as a pedal 35. Figure 1 The figures etc. show a state where a cover (not shown) provided on the front side of the paper surface of the housing 10 is removed, and portions forming a cross section on the cover surface are hatched.

[0090] The pedal lever 20 includes a pad 21, an arm 31, and a pedal 35, and is driven integrally by the driver's stepping operation or the like. The pad 21 is configured to be operable by the driver stepping on it. The pad 21 is rotatably supported on the housing 10 by a fulcrum member 23 provided on the housing 10. The pedal lever 20 of this embodiment is a so-called "floor type" in which the pad 21 is extended in a direction along one side of the housing 10. The wall portion of the housing 10 on the side opposite to the pad 21 is set as the top wall portion 11. The side guard 24 is a component that protects the gap between the pad 21 and the housing 10 to prevent the driver's feet from being caught between the pad 21 and the housing 10.

[0091] The arm 31 connects the pad 21 and the pedal 35. An opening for inserting the arm 31 is formed in the top wall portion 11 of the housing 10. The opening for inserting the arm 31 is formed so as not to interfere with the arm 31 throughout the entire range of pedal operation.

[0092] The pedal 35 is housed within the interior space of the housing 10 and includes a shaft 351 and a connecting portion 352. The shaft 351 is rotatably supported by the housing 10. The connecting portion 352 extends from the shaft 351 substantially along the top wall 11. The end of the connecting portion 352 opposite the shaft 351 engages with the arm 31. Thus, when the driver operates the pad 21, the pad 21, the arm 31, and the pedal 35 are driven as a whole.

[0093] The pedal biasing member 37 is a compression coil spring, one end of which is fixed to the pedal 35 and the other end to the housing 10. It biases the pedal 35 toward the top wall 11. When the driver is not stepping on the pad 21, the arm 31 abuts against the fully closed stopper 17 formed on the inner side of the top wall 11. Furthermore, when the driver steps on the pad 21, the pad 21 abuts against the fully open stopper (not shown) formed on the outer side of the top wall 11. Hereinafter, the state in which the arm 31 abuts against the fully closed stopper 17 is referred to as the "fully closed throttle state," and the state in which the pad 21 abuts against the fully open stopper is referred to as the "fully open throttle state."

[0094] The throttle opening sensor 39 generates an throttle opening signal corresponding to the rotation angle of the shaft 351. For example, the throttle opening sensor 39 includes a detection circuit including a Hall element that detects the orientation of a permanent magnet embedded in the shaft 351. Any throttle opening sensor 39 capable of detecting the throttle opening can also be used; elements other than Hall elements may be used. The throttle opening signal is output to the ECU 99, which serves as the control unit, via a connector (not shown).

[0095] The motor 40 is, for example, a DC motor, and is provided at a position closer to the front end side of the pad 21 than the arm 31. The ECU 99 controls the drive of the motor 40 based on the detection values ​​of the throttle opening sensor 39 and the position sensor 49. The driving force of the motor 40 is transmitted to the pedal rod 20 via the power transmission mechanism 50. Thus, the pedal rod 20 is driven by the driving force of the motor 40. The throttle device 1 of this embodiment is configured so that the pedal rod 20 can be actively driven in the throttle closing direction (hereinafter appropriately referred to as the "return direction") by the driving force of the motor 40 by providing the power transmission mechanism 50. In addition, the opening direction of the throttle pedal is appropriately referred to as the "stepping direction". With regard to the throttle opening sensor 39, the ECU 99 and the throttle opening and closing direction, except for Figure 1 Other illustrations are omitted.

[0096] Here, before explaining the details of the power transmission mechanism 50, the actuator applying a reaction force to the pedal rod 20 and the locking mechanism are conceptually explained. Here, a series of components that transmit power from the driving source to the pedal rod 20 via the power transmission mechanism are referred to as "actuator". Figure 54 As shown, if the power transmission mechanism 50 is constituted by a linear motion member such as a rack and a compression spring, the linear motion member moves when the motor 40 is driven, thereby driving the pedal lever 20 in the accelerator closing direction.

[0097] In addition, if Figure 55 As shown, the pedal rod 20 can also be driven directly by a linear motion member without a spring. This allows for adjustment of the reaction force. Furthermore, while the power transmission mechanism 50 is described here as an example of a mechanism that utilizes the motor 40 to generate linear motion, the power transmission mechanism can also be a rotational mechanism.

[0098] In addition, if Figure 56A 、 Figure 56B as well as Figure 57 As shown, by providing a locking member 501 that locks the pedal rod 20 in the fully closed state, for example, the pad 21 is fixed during automatic driving, thereby enabling the pedal to be realized. Figure 55 A and Figure 55As shown in B, it is preferable to configure the pedal to be locked by dividing the driver's pedal force through the inclined surface, thereby reducing the load applied to the motor 40 side. If the load LD applied to the motor 40 side can be maintained to be less than the braking torque Td when the power to the motor 40 is cut off, the locked state can be maintained even if the power to the motor 40 is cut off. The same applies to the fully open state and the locking at the intermediate position. In addition, as Figure 57 As shown, it is also possible to configure such that when the pedal is locked, no pedal force of the driver is applied to the motor 40 side.

[0099] The locked position of the pedal rod 20 can be as follows Figure 58A As shown, it is the fully closed position, which can be Figure 58B As shown, it is any position between fully closed and fully open, or it can be Figure 58C The fully open position is shown. Figures 58A to 58C The locking mechanism is omitted in the figure.

[0100] The connection relationship between the pedal rod 20 and the power transmission mechanism 50 will be described. Figure 59A as well as Figure 59B In the embodiment, the power transmission mechanism 50 is connected to the pedal rod 20, and the pedal rod 20 moves integrally with the power transmission mechanism 50 throughout the entire range from fully closed to fully open. In such a configuration, the motor 40 rotates together with the operation of the pedal rod 20, thereby generating cogging torque that affects the pedaling force.

[0101] exist Figure 60A as well as Figure 60B In the embodiment, the power transmission mechanism 50 contacts the pedal rod 20 by the force generated by the force member such as a spring, and the pedal rod 20 and the power transmission mechanism 50 move integrally in the entire range from fully closed to fully open. In such a configuration, the force of the force member affects the pedaling force. Figure 58A 、 Figure 58B 、 Figure 59A as well as Figure 59B As shown, when the pedal rod 20 and the power transmission mechanism 50 move integrally, a reaction force can be applied with good responsiveness.

[0102] exist Figure 61A as well as Figure 61B In the embodiment of the present invention, the power transmission mechanism 50 is configured to be separable from the pedal rod 20 throughout the entire range from fully closed to fully open. This prevents the power transmission mechanism 50 from affecting the pedal force when no reaction force is applied, allowing the reaction force to be applied to the pedal rod 20 only when necessary. The connection between the pedal rod 20 and the power transmission mechanism 50 can be appropriately selected based on whether responsiveness or the effect on the reaction force is prioritized.

[0103] in addition, Figures 54 to 61B These are diagrams that outline the power transmission mechanism and locking mechanism in this specification, and also include diagrams that explain the concepts of the embodiments described later. Although not all of them correspond to this embodiment, numbers corresponding to this embodiment are added for convenience.

[0104] The motor 40, acting as a reaction force driving source, actively drives the pedal lever 20 in the return direction. For example, when the driver steps on the pad 21 based on driving conditions, a reaction force is applied at a point where fuel efficiency is determined to be deteriorating. This creates a wall feel and prevents the driver from stepping on the pad 21. This improves fuel efficiency. Furthermore, by pulse-driving the pedal lever 20 in the return direction, it can be used to transmit information, such as notifications for switching from automated to manual driving. Furthermore, during automated driving, the pedal lever 20 can be locked, rendering the pad 21 a footrest, thereby ensuring comfort.

[0105] return Figure 1 The power transmission mechanism 50 includes a feed screw 51, a bracket 52, a rod 53, and a reaction force adjustment force application member 54. The feed screw 51, the bracket 52, and the reaction force adjustment force application member 54 are housed in a housing 55. The housing 55 is formed in a substantially cylindrical shape and is adjacent to or integrally provided on the side of the housing 10 opposite to the side where the fulcrum member 23 is provided. The motor 40 is provided on the side of the housing 55 opposite to the pad 21.

[0106] A motor shaft insertion hole 551 is provided on the motor-side surface of the housing 55, through which the motor shaft is inserted. Furthermore, a rod insertion hole 552 is formed on the pad-side surface of the housing 55, through which the shaft portion 532 of the rod 53 is inserted. A position sensor 49 for detecting the position of the bracket 52 is provided on the housing 55. The position sensor 49 can be located anywhere that can detect the position of a component whose position changes when a reaction force is applied. The position sensor is not shown in some of the embodiments described below.

[0107] The feed screw 51 is an external thread and is driven to rotate by the motor 40. The bracket 52 is formed in a roughly bottomed cylindrical shape that is open to the rod 53 side. An internal thread portion 521 that engages with the feed screw 51 is formed at the bottom of the bracket 52. The feed screw 51 is rotated by the motor 40, whereby the bracket 52 can move along the axial direction of the feed screw 51. A stop portion 522 that can abut against the rod 53 is formed on the rod 53 side of the bracket 52. In addition, the feed screw 51 side can also be set as an internal thread, and the bracket 52 side can be set as an external thread. The external thread and the internal thread of the embodiment described later can also be replaced.

[0108] The rod 53 has a top portion 531 and a shaft portion 532, and is formed into a generally T-shape when viewed from the side. The top portion 531 is housed in the housing 55, while the shaft portion 532 protrudes from the rod insertion hole 552 toward the gasket 21. The distal end of the shaft portion 532 is formed into an arc shape when viewed from the side and abuts the gasket 21. The reaction force adjustment biasing member 54 is a compression coil spring, one end of which is housed within the bracket 52 and the other end of which abuts the top portion 531 of the rod 53.

[0109] like Figure 1 As shown, in the initial state of the fully closed throttle state, the top 531 of the rod 53 is pressed against the pad-side end surface of the housing 55 by the reaction force adjustment urging member 54. In the initial state, the bracket 52 is relatively located on the motor 40 side.

[0110] like Figure 2 As shown, when the pad 21 is stepped on, the pedal force causes the rod 53 to move toward the bracket 52. Furthermore, when the motor 40 is driven to drive the bracket 52 toward the rod 53, the force applied by the reaction force adjustment biasing member 54 can apply a reaction force in the return direction of the pedal rod 20. The ECU 99 controls the driving of the motor 40 and the bracket position based on the detection value of the position sensor 49, thereby adjusting the reaction force applied to the pedal rod 20.

[0111] like Figure 3 As shown, when the motor 40 is driven in the fully closed throttle state and the bracket 52 is driven to a position where the stopper 522 contacts the top 531 of the rod 53, the pedal rod 20 is locked. In the figure, the movement of the bracket 52 and the like is indicated by a dashed arrow. This also applies to the embodiments described below.

[0112] In this embodiment, the feed screw 51 and bracket 52 form a bolt-nut relationship, so the bracket 52 is held in the position where the motor 40 is deenergized. That is, even if the motor 40 is deenergized while the bracket 52 is in contact with the rod 53 and the driver steps on the pad 21 in this state, the bracket 52 will not be pushed back and will remain locked. Furthermore, the locked state can be released by driving the motor 40 in the opposite direction, separating the bracket 52 from the rod 53.

[0113] As described above, the throttle device 1 includes a pedal lever 20, at least one motor 40 serving as a drive source, a power transmission mechanism 50, and a locking mechanism 501. The pedal lever 20 operates in response to a stepping operation. Specifically, the pedal lever 20 includes a pad 21 capable of being stepped on, a pedal 35 rotatably supported by the housing 10, and an arm 31 connecting the pad 21 and the pedal 35. The motor 40 is capable of applying a return force, or reaction force, to the pedal lever 20.

[0114] The locking mechanism 501 is capable of limiting the movement of the pedal rod 20. In this embodiment, the feed screw 51, the bracket 52, and the rod 53 constitute the locking mechanism 501. Here, "being capable of limiting the movement of the pedal rod" means that the movement of the pedal rod 20 or the power transmission mechanism 50 is reduced to zero or reduced compared to the unlocked state.

[0115] The throttle device 1 can be implemented with a relatively simple and compact structure, utilizing a single motor 40 as a drive source, to provide both a pedal force adjustment function and a locking function. For example, if the driver is unwilling to step on the pedal lever 20 due to a hazard warning, improved fuel consumption, or other reasons, the reaction force can be increased to prevent the driver from stepping on the pedal lever 20. Furthermore, the reaction force can be adjusted based on the driver's request or the type of vehicle. Furthermore, when accelerator operation is not required, such as during automated driving, the pedal lever 20 can be fixed, thereby creating a footrest, or preventing the pedal lever 20 from being stepped on accidentally.

[0116] The power transmission mechanism 50 includes a reaction force adjustment urging member 54, which transmits the driving force of the motor 40 to the pedal rod 20 via the reaction force adjustment urging member.

[0117] The motor 40 generates a rotational force. The power transmission mechanism 50 includes a linear motion conversion mechanism that converts the rotational force of the motor 40 into a linear motion direction, and a reaction force adjustment force member 54 disposed between the pedal rod 20 and the linear motion conversion mechanism. In this embodiment, the feed screw 51 and the bracket 52 constitute the linear motion conversion mechanism, and the reaction force adjustment force member 54 is disposed between the pedal rod 20 and the bracket 52. By converting the rotational force of the motor 40 into a linear motion force, and by adjusting the position of the bracket 52 to extend or retract the reaction force adjustment force member 54, the reaction force applied to the pedal rod 20 can be increased or decreased.

[0118] The throttle device 1 includes a position sensor 49 for detecting the position of the bracket 52, and an ECU 99 for controlling the motor 40 based on the detection value of the position sensor 49. The motor 40 is controlled based on the detection value of the position sensor 49. This allows for appropriate control of the reaction force applied to the pedal lever 20 and the locking state.

[0119] The locking mechanism 501 includes a bracket 52 and a rod 53. The bracket 52 moves to a locked position by axially moving along the reaction-force adjustment urging member 54. It then indirectly abuts the pedal rod 20 via the rod 53, thereby restricting the movement of the pedal rod 20. In other words, the locking mechanism of this embodiment is a push-lock mechanism. In this embodiment, the position where the bracket 52 abuts the rod 53 corresponds to the "locked position." "Axial" is not strictly limited to the axial direction of the reaction-force adjustment urging member 54; when the reaction-force adjustment urging member 54 is compressed, some deviation is permitted to lock the pedal rod 20 via the stopper 522. This also applies to "axial" and "orthogonal" directions in the embodiments described below; deviation is permitted to the extent necessary to achieve the desired function. From the fully closed throttle position, the bracket 52 presses the pedal rod 20 from the direction of its movement, thereby properly locking the pedal rod 20. The second, third, and fifth embodiments also employ push-lock mechanisms.

[0120] The movable part of this embodiment is a bracket 52, and the power transmission mechanism 50 includes a feed screw 51 and a bracket 52. The feed screw 51 is driven by the motor 40 and is formed with an external thread. The bracket 52 is formed with an internal thread that engages with the feed screw 51. One end of the force-applying member 54 for adjusting the reaction force abuts against the bracket 52, and the other end abuts against the rod 53 abutting against the pedal rod 20. A stopper 522 capable of abutting against the rod 53 is formed on the bracket 52, and the pedal rod 20 is locked by the abutment between the rod 53 and the stopper 522.

[0121] Because the bracket 52 is moved by the meshing of the male and female threads, the bracket 52 can be positioned without being pushed back by the force applied by the reaction force adjustment biasing member 54. Furthermore, because the bracket 52 is positioned by the meshing of the male and female threads, the load on the motor 40 can be reduced. Furthermore, the bracket 52 serves as both a linear motion conversion mechanism and a locking mechanism, simplifying its structure.

[0122] The power transmission mechanism 50 includes a linear motion conversion mechanism that converts the rotational force of the motor 40 into a linear motion. The rod 53 of the power transmission mechanism 50 is always in contact with the pedal rod 20. This allows a reaction force to be generated with good responsiveness.

[0123] The locking mechanism 501 restricts the movement of the pedal rod 20 when the pedal rod 20 is in the fully closed position. The locking mechanism 501 is driven by the motor 40, which applies a reaction force to the pedal rod 20. The locking mechanism 501 is capable of maintaining the restricted movement of the pedal rod 20 when the motor 40, which is the driving source of the locking mechanism 501, is deenergized. This allows the movement of the pedal rod 20 to be appropriately restricted.

[0124] (Second embodiment)

[0125] In the second to fifth embodiments, the power transmission mechanism is different from the above-mentioned embodiment, so the following description will focus on this point. Figures 4 to 6 The second embodiment is shown in FIG. 1. The power transmission mechanism 60 of the throttle device 2 includes a feed screw 61, a bracket 62, a cylinder 63, and a reaction force adjustment urging member 64.

[0126] The feed screw 61 is externally threaded and is driven to rotate by the motor 40 via the gear mechanism 410. The gear mechanism 410 includes a first gear 411 and a second gear 412. The first gear 411 rotates integrally with the motor 40, and the second gear 412, which meshes with the first gear 411, rotates integrally with the feed screw 61. Thus, the feed screw 61 is driven by the motor 40.

[0127] The bracket 62 is formed into a roughly cylindrical shape and is arranged on the radial inner side of the cylinder body 63. A guide protrusion 625 is formed on the peripheral wall of the bracket 62 to guide the axial movement of the cylinder body 63. An internal thread portion 621 that meshes with the feed screw 61 is formed on the radial inner side of the bracket 62 and on the side of the gear mechanism 410. The feed screw 61 is rotated by the motor 40, so that the bracket 62 can move in the axial direction. A stopper portion 622 that can abut against the liner 21 is formed at the end portion of the bracket 62 on the side of the pad 21. The stopper portion 622 is erected along the outer diameter and is arranged on the end face of the bracket 62 on the side of the pad 21. The pad 21 side of the bracket 62 is exposed from the cylinder body 63 to the side of the pad 21.

[0128] The feed screw 61 and the bracket 62 are housed in the cylinder body 63. The cylinder body 63 is formed in a roughly cylindrical shape and is arranged inside the motor housing 400 in parallel with the motor shaft. Here, the "parallel" in this specification is not limited to strict parallelism, and deviations to the extent of assembly error are allowed. A hole portion through which the feed screw 61 can be inserted is formed on the end face of the cylinder body 63 on the gear mechanism 410 side, and the end face of the cylinder body 63 on the gasket 21 side is formed so that the bracket 62 can be inserted. A position sensor 49 for detecting the position of the bracket 62 is provided in the cylinder body 63.

[0129] The reaction force adjustment urging member 64 is a compression coil spring, one end of which is disposed radially inward of the stopper 622 of the bracket 62 and the other end of which is fixedly abutted against the liner 21. Specifically, in this embodiment, the rod of the above-described embodiment is omitted, and the reaction force adjustment urging member 64 directly presses the liner 21.

[0130] Figure 4 Indicates the initial state when the throttle is fully closed. In the initial state, the internal thread portion 621 of the bracket 62 is engaged with the feed screw 61 at a position as close as possible to the gear mechanism 410. Figure 5As shown in FIG. 1 , when the liner 21 is stepped on, the reaction force adjustment urging member 64 is compressed by the pedal force. Furthermore, when the motor 40 is driven to drive the bracket 62 toward the liner 21, the reaction force adjustment urging member 64 is further compressed. Thus, the urging force of the reaction force adjustment urging member 64 can apply a reaction force in the return direction of the pedal rod 20.

[0131] like Figure 6 As shown, when the motor 40 is driven with the throttle fully closed, driving the bracket 62 to a position where the bracket 62 abuts the pad 21, the pedal rod 20 is locked. In this embodiment, as in the previous embodiment, the feed screw 61 and bracket 62 form a bolt-nut relationship. Therefore, by disconnecting the power to the motor 40 while the pad 21 abuts the bracket 62, the locked state can be maintained without power. Furthermore, the locked state can be released by driving the motor 40 in the opposite direction, separating the bracket 62 from the pad 21.

[0132] In this embodiment, the movable member is a bracket 62, and the linear motion conversion mechanism includes a feed screw 61 and bracket 62. The feed screw 61 is driven by the motor 40 and has an external thread. The feed screw 61 is driven by the motor 40 via the gear mechanism 410. The bracket 62 has an internal thread that meshes with the feed screw 61.

[0133] One end of the reaction force adjustment urging member 64 abuts the bracket 62, and the other end abuts the pedal rod 20. A stopper 622 is formed on the bracket 62, and the pedal rod 20 is locked by abutting the stopper 622. In this embodiment, the position where the pad 21 abuts the stopper 622 corresponds to the "locked position," and the feed screw 61 and bracket 62 constitute the locking mechanism 502.

[0134] In this embodiment, the locking mechanism 502 includes a bracket 62, and the bracket 62 directly contacts the pedal rod 20 to restrict the movement of the pedal rod 20. Even with this configuration, the same effects as those of the above embodiment are achieved.

[0135] (Third embodiment)

[0136] exist Figures 7 to 9 , a third embodiment is shown in FIG. The power transmission mechanism 70 of the throttle device 3 includes a feed screw 71, a jack head 72, a bracket 73, and a force-applying member 74 for adjusting the reaction force. In this embodiment, the motor shaft and the feed screw 71 are arranged approximately parallel to the top wall portion 11 of the housing 10. The feed screw 71 and the jack head 72 are housed in the motor housing 401. An opening is formed in the wall portion of the motor housing 401 on the side of the gasket 21 so that the jack head 72 can be driven.

[0137] The feed screw 71 is an external thread and is driven to rotate by the motor 40 via the gear mechanism 410. From the center in the axial direction, the thread of the feed screw 71 is cut in the opposite direction. The jack top 72 has internal thread blocks 721, 722, an upper connecting part 723, a lower connecting part 724 and connecting rods 725 to 728. The internal thread blocks 721 and 722 are formed with internal threads on the inner side and engage with the feed screw 71. In this embodiment, the internal thread block 721 is located at a position farther away from the gear mechanism 410 than the center of the feed screw 71, and the internal thread block 722 is located at a position closer to the gear mechanism 410 than the center of the feed screw 71.

[0138] The internal thread blocks 721 and 722 are connected on the liner 21 side of the feed screw 71 by a connecting rod 725, an upper connecting portion 723, and a connecting rod 726. In addition, the internal thread blocks 721 and 722 are connected on the side of the feed screw 71 opposite to the liner 21 by a connecting rod 727, a lower connecting portion 724, and a connecting rod 728.

[0139] When the motor 40 rotates the feed screw 71 to one side, causing the internal thread blocks 721 and 722 to move toward the center of the feed screw 71, the connecting portions 723 and 724 move away from the feed screw 71. Furthermore, when the motor 40 rotates the feed screw 71 to the other side, causing the internal thread blocks 721 and 722 to move away from the center of the feed screw 71, the connecting portions 723 and 724 move toward the feed screw 71.

[0140] The bracket 73 is formed into a generally cylindrical shape that opens toward the gasket 21 and is fixed to the upper connecting portion 723. A stopper 732 is formed on the gasket 21 side of the bracket 73, which is capable of abutting the gasket 21. One end of the reaction force adjustment urging member 74 is disposed radially inward of the stopper 732 of the bracket 73, and the other end abuts and is fixed to the gasket 21. That is, in this embodiment, similar to the second embodiment, the reaction force adjustment urging member 74 directly presses the gasket 21.

[0141] Figure 7 The figure shows the initial state when the throttle is fully closed. In the initial state, the internal thread blocks 721 and 722 are located as far apart as possible. Figure 8 As shown, when the liner 21 is stepped on, the reaction force adjustment force member 74 is compressed by the pedal force. In addition, when the motor 40 is driven to drive the internal thread blocks 721 and 722 in the direction of approaching, the upper connecting portion 723 moves toward the liner 21 side, and the reaction force adjustment force member 74 is further compressed. As a result, the force applied by the reaction force adjustment force member 74 can apply a reaction force in the return direction of the pedal rod 20.

[0142] like Figure 9As shown, when the motor 40 is driven with the throttle fully closed, moving the internally threaded blocks 721 and 722 and raising the upper connecting portion 723 until the bracket 73 abuts the spacer 21, the pedal rod 20 is locked. As in the previous embodiment, the feed screw 71 and the internally threaded blocks 721 and 722 form a bolt-nut relationship. Therefore, by disconnecting the power to the motor 40 while the spacer 21 abuts the bracket 73, the locked state can be maintained in a de-energized state. Furthermore, the locked state can be released by driving the motor 40 in the opposite direction, separating the bracket 73 from the spacer 21.

[0143] In this embodiment, the moving component is bracket 73. The linear motion conversion mechanism includes a feed screw 71, a jack head 72, and bracket 73. The feed screw 71 is driven by the motor 40 and has either an external thread or an internal thread with reversed thread directions formed in its middle portion. The feed screw 71 is driven by the motor 40 via the gear mechanism 410.

[0144] The jack head 72 includes internally threaded blocks 721 and 722, which serve as threaded blocks, and connecting portions 723 and 724. The internally threaded blocks 721 and 722 are located on either side of the middle portion of the feed screw 71 and have internal threads that mesh with the feed screw 71. The connecting portions 723 and 724 connect connecting rods 725 to 728 connected to the internally threaded blocks 721 and 722. The bracket 73 is fixed to the connecting portion 723, which is located on the pedal rod 20 side of the feed screw 71.

[0145] One end of the reaction force adjustment force member 74 abuts the bracket 73, and the other end abuts the pedal rod 20. The bracket 73 is formed with a stopper 732 that can abut the pedal rod 20. The pedal rod 20 abuts the stopper 732 to lock the pedal rod 20. In this embodiment, the position where the stopper 732 abuts the pad 21 corresponds to the "locked position." In this embodiment, the feed screw 71, the jack head 72, and the bracket 73 constitute the locking mechanism 503. Even with this structure, the same effect as the above-mentioned embodiment is achieved.

[0146] (Fourth embodiment)

[0147] exist Figures 10 to 12 , a fourth embodiment is shown in FIG. The power transmission unit 80 of the throttle device 4 includes a slider member 81, a bracket 82, a bracket guide member 83, and a reaction force adjustment force member 84. The slider member 81 includes a rack portion 811, a slider portion 812, and a stopper portion 814. The rack portion 811 is provided so that the slider member 81 can be moved in a lateral direction intersecting the rotational direction of the pedal rod 20 by the rotation of the motor 40. In this embodiment, the fulcrum member 23 side is set as one side, and the front end side of the pad 21 is set as the other side.

[0148] The slider portion 812 is formed into a substantially L-shape from one end of the rack portion 811. An inclined surface 813 is formed on the pad 21 side of the slider portion 812, with the distance from the pad 21 increasing toward one side. A stopper portion 814 is provided on one side of the rack portion 811, protruding toward the pad 21 and capable of contacting the arm 31.

[0149] The bracket 82 is configured to slide on the inclined surface 813 and to be movable along the axial direction of the reaction force adjustment urging member 84 by movement of the slider member 81. The bracket guide member 83 guides the movement of the bracket 82. One end of the reaction force adjustment urging member 84 is fixed to the bracket 82, and the other end is fixed in contact with the arm 31.

[0150] Figure 10 FIG. 8 shows the initial state when the throttle is fully closed. In the initial state, the bracket 82 is located on one side of the slider portion 812. Figure 11 As shown, when the pad 21 is stepped on, the reaction-force adjustment urging member 84 is compressed by the pedaling force. Furthermore, when the motor 40 is driven to move the slider member 81 to one side, the bracket 82 is pushed upward toward the arm 31, further compressing the reaction-force adjustment urging member 84. This allows the urging force of the reaction-force adjustment urging member 84 to apply a reaction force in the return direction of the pedal rod 20. In other words, the inclined surface 813, which represents the movable range of the bracket 82, forms a reaction-force increasing range.

[0151] like Figure 12 As shown, when the motor 40 is driven in the fully closed throttle position, causing the slider member 81 to move to a position where the arm 31 abuts the stopper 814, the pedal lever 20 is locked. Because the arm 31 is abutted and fixed by the slider member 81, the locked state can be maintained even when the motor 40 is turned off. Furthermore, when the motor 40 is driven in the opposite direction, causing the slider member 81 to move to the other side, the arm 31 separates from the stopper 814, releasing the locked state.

[0152] In this embodiment, a slider member 81, serving as a moving member, is included in the linear motion conversion mechanism and is moved to the locked position by moving in a direction perpendicular to the axial direction of the reaction force adjustment biasing member 84. By using the slider member 81 as the moving member and pressing the pedal rod 20 in a direction perpendicular to its movement, the pedal rod 20 can be locked without applying a load to the motor 40. In other words, the locking mechanism of this embodiment is a slide locking mechanism.

[0153] The moving component is a slider 81, and the linear motion conversion mechanism includes the slider 81 and a bracket 82. The slider 81 includes a rack portion 811, a slider 812, and a stopper 814. The rack 811 constitutes a rack and pinion mechanism driven by the motor 40. The slider 812 is formed with an inclined surface 813. The stopper 814 is provided so as to be able to abut against the pedal rod 20.

[0154] The bracket 82 is slidably mounted on the inclined surface 813 and is movable axially along the reaction force adjustment force member 84 by movement of the slider member 81. One end of the reaction force adjustment force member 84 abuts the bracket 82, and the other end abuts the pedal rod 20. The pedal rod 20 is locked by abutting the stopper 814. The position where the stopper 814 abuts the arm 31 corresponds to the "locked position." In this embodiment, the slider member 81 constitutes the locking mechanism 504. Even with this configuration, the same effects as those of the above-described embodiment are achieved.

[0155] (Fifth embodiment)

[0156] exist Figures 13 to 15 The fifth embodiment is shown in FIG. The power transmission mechanism 90 of the throttle device 5 includes a feed screw 91, a bracket 92, and a force-applying member 94 for reaction force adjustment. The feed screw 91 is arranged inside the motor housing 400 in parallel with the motor shaft. The feed screw 91 is an external thread and is driven to rotate by the motor 40 via the gear mechanism 410. The bracket 92 has an internal thread portion 921, a locking portion 922, and a stop portion 923. The internal thread portion 921 is engaged with the feed screw 91, and the feed screw 91 is rotated by the motor 40, thereby enabling the bracket 92 to move in the axial direction. The locking portion 922 is formed to extend to the side of the internal thread portion 921 opposite to the motor 40. The stop portion 923 is provided to protrude toward the side of the gasket 21 between the internal thread portion 921 and the locking portion 922. The stop portion 923 is formed so as to be able to abut against the arm 31 when the throttle is fully closed. The reaction force adjustment urging member 94 is a compression coil spring, one end of which is fixed to the locking portion 922 of the bracket 92 , and the other end of which is fixed in contact with the arm 31 .

[0157] Figure 13 The figure shows the initial state when the throttle is fully closed. In the initial state, the bracket 92 is located as close as possible to the gear mechanism 410. Figure 14 As shown in FIG. 1 , when the pad 21 is stepped on, the reaction force adjustment force member 94 is compressed by the pedal force. Furthermore, when the motor 40 is driven to drive the bracket 92 toward the pad 21, the reaction force adjustment force member 94 is further compressed. As a result, the force applied by the reaction force adjustment force member 94 can apply a reaction force in the return direction to the pedal rod 20.

[0158] like Figure 15As shown, when the motor 40 is driven in the fully closed throttle state and the bracket 92 is driven to the position where the stop portion 923 abuts the arm 31, the pedal rod 20 is locked by the abutment and fixation of the arm 31 and the bracket 92. Similar to the first embodiment, the feed screw 91 and the internal threaded portion 921 of the bracket 92 form a bolt and nut relationship, so that the locked state can be maintained in the non-powered state. In addition, the locked state is released by driving the motor 40 in the opposite direction to separate the bracket 92 from the arm 31. In this embodiment, the feed screw 91 and the bracket 92 constitute a locking mechanism 505. Even if it is constructed in this way, it has the same effect as the above-mentioned embodiment.

[0159] (Sixth embodiment)

[0160] exist Figures 16 to 18 , a sixth embodiment is shown. The power transmission mechanism 100 of the throttle device 6 includes a feed screw 101, a bracket 105, a slider member 110, and a reaction force adjustment force member 115. The feed screw 101, similar to the feed screw 91 of the fifth embodiment, is arranged inside the motor housing 400 parallel to the motor shaft and is rotationally driven by the motor 40 via the gear mechanism 410.

[0161] An internal thread that meshes with the feed screw 101, which is an external thread, is formed on the bracket 105 to hold the reaction force adjustment force component 115. The slider component 110 has a spring receiving portion 111 and an arm abutment portion 112. The bracket 105 and the slider component 110 can move in the axial direction by the rotation of the feed screw 101. The reaction force adjustment force component 115 is accommodated on the radial inner side of the spring receiving portion 111. The arm abutment portion 112 is formed to protrude radially outward from the spring receiving portion 111 and is formed with an inclined surface 113 that can abut against the arm 31. The reaction force adjustment force component 115 is a compression coil spring, one end of which is fixed to the bracket 105 and the other end is fixed to the slider component 110.

[0162] exist Figure 16 shows the bracket 105 and slider member 110 in the retracted position. As indicated by the dotted line, when the bracket 105 and slider member 110 are in the retracted position, the arm 31 and slider member 110 remain separated even when the pedal lever 20 is depressed to the fully open position. Thus, by disengaging the arm 31 and slider member 110 with the bracket 105 and slider member 110 in the retracted position, the cogging torque from the power transmission mechanism 100 and the like can be prevented from affecting the pedaling force throughout the entire range from fully closed to fully open accelerator pedals, provided that no reaction force is applied.

[0163] like Figure 17As shown, when a reaction force is applied, the feed screw 101 is rotated by driving the motor 40, thereby raising the bracket 105 and the slider member 110, causing the inclined surface 113 of the slider member 110 to abut against the arm 31. When the bracket 105 is further raised while the inclined surface 113 is in contact with the arm 31, the reaction force adjustment force member 115 is compressed, thereby applying a reaction force in the return direction to the pedal rod 20.

[0164] like Figure 18 As shown, when the power transmission mechanism 100 is locked, the bracket 105 is raised to the upper end, and the slider member 110 is clamped between the bracket 105 and the motor housing 400. This lock is achieved by the static friction force of the feed screw 101. Furthermore, the locked state is released by driving the motor 40 to lower the bracket 105. In this embodiment, the feed screw 101, bracket 105, slider member 110, and motor housing 400 constitute the locking mechanism 506.

[0165] The power transmission mechanism 100 of this embodiment includes a feed screw 101, a bracket 105, and a slider component 110. The feed screw 101 is driven by the motor 40 and is formed with one of an external thread and an internal thread. The bracket 105 is formed with the other of an external thread and an internal thread that meshes with the feed screw 101. The slider component 110 has an inclined surface 113 that abuts against the pedal rod 20. One end of the force-applying component 115 for adjusting the reaction force abuts against the bracket 105, and the other end abuts against the slider component 110.

[0166] The slider member 110 of the power transmission mechanism 100 is configured to contact the pedal rod 20 when a reaction force is applied to the pedal rod 20, and to separate from the pedal rod 20 when no reaction force is applied to the pedal rod 20. Thus, when no reaction force is applied to the pedal rod 20, forces such as the cogging torque of the motor 40 can be prevented from affecting the pedal rod 20 from the power transmission mechanism 100. Furthermore, the same effects as those of the above-described embodiment are achieved.

[0167] (Seventh embodiment)

[0168] exist Figures 19 to 33 The power transmission mechanism 200 of the throttle device 7 includes a motor gear 204 , a bevel gear 205 , a first spur gear 210 , a second spur gear 220 , a third spur gear 230 , a torsion spring 245 , a cam 250 , and a lock portion 260 , and is driven by a motor 201 .

[0169] like Figure 21 As shown, the motor 201 is, for example, a DC motor, generates rotational force, and is housed in a motor housing 202. The motor 201 is provided so that a rotation axis (not shown) is substantially parallel to the top wall portion 11 of the housing 10.

[0170] The bevel gear 205 meshes with the motor gear 204 that rotates integrally with the shaft of the motor 201, and is connected to the first spur gear 210 via the shaft 211. The shaft 211 is rotatably supported by the connector housing 203 and the gear cover 206.

[0171] Gear cover 206 is provided on the side surfaces of motor 201 and connector housing 203, and houses spur gears 210, 220, 230, cam 250, and the like. Gear cover 206 is secured to connector housing 203 and motor housing 202 using fixing members 207, such as self-tapping screws. Gear cover 206 is provided with a rotation angle sensor (not shown) that detects the rotation of second spur gear 220.

[0172] like Figure 21 、 Figure 25 as well as Figure 26 As shown in the figures, the second spur gear 220 has an inner cylinder portion 221 that opens to the side opposite to the motor housing 202, and an outer cylinder portion 224 that opens to the motor housing 202 side, and is integrally formed of resin or the like. Here, an example in which the second spur gear 220 or the like is formed of resin is shown, but it can also be made of metal. The various components including other gears are also the same, and the material can be arbitrarily selected according to requirements such as weight and strength. The shaft 240 is pressed into the bottom 222 of the inner cylinder portion 221. A sensor holding portion 208 that holds the rotation angle sensor is inserted into the inner circumference of the inner cylinder portion 221. A magnet 209 is provided in the inner cylinder portion 221 at a position that can be detected by the rotation angle sensor.

[0173] A gear portion 225 meshing with the first spur gear 210 is formed on the opening side of the outer cylinder 224. A housing chamber 226 housing the torsion spring 245 is formed between the inner cylinder 221 and the outer cylinder 224. A pin 227 for locking one end of the torsion spring 245 is protruding from the housing chamber 226.

[0174] A locking wall 228 is formed on the inner wall of the outer cylinder 224. The locking wall 228 is formed in a substantially L-shaped shape in a plan view. In this embodiment, the locking wall 228 is formed at two locations across the axis. In addition, a locking locking portion 229 is formed protrudingly on the radially outer side of the outer cylinder 224.

[0175] The third spur gear 230 includes a base 231, a gear portion 232, an insert portion 233, a locking protrusion 236, a pin 237, and the like, and is integrally formed from resin or the like. The gear portion 232 is formed to protrude from the base 231 on the side opposite the second spur gear 220. The insert portion 233 is formed to protrude from the base 231 on the side facing the second spur gear 220 and is inserted radially inward of the outer cylindrical portion 224. An insertion hole 234 is formed in the gear portion 232 and the insert portion 233, through which the shaft 240 is inserted.

[0176] The locking protrusions 236 are formed at two locations on the outer circumference of the base 231 to protrude toward the second spur gear 220 and are inserted into the space between the locking wall 228 and the outer cylinder 224 . The pins 237 are formed to protrude toward the second spur gear 220 of the base 231 .

[0177] The torsion spring 245 is housed in the housing chamber 226 of the second spur gear 220. One end of the torsion spring 245 is engaged with the pin 227 of the second spur gear 220, and the other end is engaged with the pin 237 of the third spur gear 230. When the second spur gear 220 is driven by the motor 201 to rotate, the second spur gear 220 and the third spur gear 230 rotate together until a set load of the torsion spring 245 is reached. When the set load is exceeded, the second spur gear 220 and the third spur gear 230 separate, and even if the second spur gear 220 rotates, the third spur gear 230 does not rotate.

[0178] like Figure 23 As shown in FIG. 1 , the cam 250 includes a main body 251, a gear portion 252, and a cam lever 253. The main body 251 is formed in a substantially circular shape in a plan view and is rotatably supported by the motor housing 202 and the gear cover 206. The gear portion 252 is formed to protrude radially outward from the main body 251 and meshes with the gear portion 232 of the third spur gear 230.

[0179] Cam lever 253 is located radially outside body 251 and extends approximately opposite gear portion 232 relative to the rotation axis of body 251. Cam lever 253 has a recess 254 formed at its distal end for contact with connecting pin 32 provided on arm 31.

[0180] like Figure 27 As shown, the locking portion 260 includes a locking pin 261, a locking pin biasing member 263, and a locking pin housing 265. The locking pin 261 is protruding from one surface of the flat plate portion 262. The locking pin biasing member 263 is a compression coil spring and is provided on the surface of the flat plate portion 262 opposite to the surface on which the locking pin 261 is provided. The locking pin housing 265 is formed in a generally cylindrical shape and has a hole 266 formed at the bottom thereof for inserting the locking pin 261. A fixing portion 267 is formed radially outward of the cylindrical portion of the locking pin housing 265. While the locking pin biasing member 263 can be compressed by the flat plate portion 262, the fixing portion 267 is fixed to the connector housing 203 by a snap fit or the like, thereby securing the locking portion 260 to the connector housing 203.

[0181] Here, the operation of the power transmission mechanism 200 will be described. Figure 28 The rotation direction of the motor 201 when the cam 250 rotates in the clockwise direction is set as positive, and the rotation direction of the motor 201 when the cam 250 rotates in the counterclockwise direction is set as negative. Figure 28 as well as Figure 29 As shown, when the cam rod 253 of the cam 250 is in contact with the connecting pin 32 of the arm 31, by rotating the motor 201 in the forward direction, a reaction force in the return direction can be applied to the pedal rod 20. At this time, the lock engaging portion 229 of the second spur gear 220 is separated from the lock pin 261, and the rotation of the gear is not restricted.

[0182] like Figure 30 as well as Figure 31 As shown, when arm 31 abuts fully closed stopper 17, clockwise rotation of cam 250 is restricted. In this state, when motor 201 is rotated in the forward direction, and the first spur gear 210 rotates beyond the set load of torsion spring 245, torsion spring 245 twists, causing second spur gear 220 to rotate counterclockwise. Consequently, the locking latch 229 uses its thrust to push locking pin 261 inward, compressing locking pin biasing member 263.

[0183] like Figure 32 as well as Figure 33 As shown, when the locking latch 229 passes over the locking pin 261, the pedal rod 20 is locked. Thus, the locked state can be maintained when the power to the motor 201 is disconnected. When the pedal rod 20 is locked, by stepping on the pedal rod 20 with a force greater than the prescribed lock release pedal force or driving the motor 201 in the negative direction, the locking pin force member 263 is compressed by the component force applied in the direction of pressing the locking pin 261, and when the locking latch 229 passes over the locking pin 261 again, the pedal rod 20 is unlocked. In this embodiment, the locking portion 260 and the second spur gear 220 constitute the locking mechanism 507. In addition, the locking mechanism 507 is a plunger type.

[0184] like Figure 34 As shown, when no reaction force is applied to the pedal rod 20, the cam 250 is rotated to a position where the cam rod 253 contacts the motor housing 202, and the cam 250 is retracted so that the cam rod 253 does not contact the connecting pin 32 in the entire range from fully closed to fully open of the pedal rod 20. Thus, when no reaction force is applied, it is possible to prevent the cogging torque and the like from the power transmission mechanism 200 from affecting the pedal force.

[0185] The power transmission mechanism 200 transmits the driving force of the motor 201 to the pedal rod 20 via a rigid component. In this embodiment, the rigid component is a cam 250 driven by the motor 201 and capable of contacting the pedal rod 20. Gears 210, 220, and 230 forming a speed reduction mechanism are disposed between the motor 201 and the cam 250. This allows the driving force of the motor 201 to be appropriately transmitted to the pedal rod 20.

[0186] The reduction mechanism includes a coaxially arranged second spur gear 220 and a third spur gear 230. A torsion spring 245 is provided between the second spur gear 220 and the third spur gear 230. When the second spur gear 220 is rotated in the direction in which the reaction force is applied, the third spur gear 230 rotates integrally with the second spur gear 220 until the set load of the torsion spring 245 is reached. When the set load of the torsion spring 245 is exceeded, the third spur gear 230 stops rotating.

[0187] The lock mechanism 507 includes a lock engaging portion 229 that rotates integrally with the second spur gear 220 , and a lock pin 261 that can engage the lock engaging portion 229 in a region where the third spur gear 230 does not rotate but the second spur gear 220 rotates.

[0188] The locking mechanism 507 includes a locking latch 229 provided on the power transmission path from the motor 201 to the pedal rod 20, and a locking pin 261 that is movable by elastic force. The locking latch 229 passes over the locking pin 261 and is locked to the locking pin 261, thereby restricting the movement of the pedal rod 20. This appropriately restricts the movement of the pedal rod 20, achieving the same effects as the above-described embodiment.

[0189] In this embodiment, the motor 201 corresponds to the "drive source," the second spur gear 220 corresponds to the "drive source-side gear," the third spur gear 230 corresponds to the "cam-side gear," the torsion spring 245 corresponds to the "inter-gear biasing member," the lock pin 261 corresponds to the "locking member," and the elastic force of the lock pin biasing member 263 corresponds to the "elastic force." Furthermore, the lock engaging portion 229 is integrally provided with the second spur gear 220 constituting the power transmission mechanism 200 and can be understood as being "provided within the power transmission path."

[0190] (Eighth embodiment)

[0191] exist Figure 35 , the eighth embodiment is shown. The eighth embodiment is a modification of the seventh embodiment. The power transmission mechanism 290 of this embodiment has a torsion spring 259 as a cam biasing member, one end of which is clamped to the cam 250, and the other end of which is clamped to the gear cover 206. In addition, for the sake of convenience, a pin provided on the gear cover 206 side and for clamping the other end of the torsion spring 259 is indicated by a dotted line. The torsion spring 259 generates an applying force on the cam shaft that exceeds the tooth torque of the motor 201, so that the cam 250 is always in contact with the arm 31. Even with such a configuration, the same effect as the above-mentioned embodiment is achieved.

[0192] (Ninth embodiment)

[0193] exist Figure 36, a ninth embodiment is shown. In the seventh embodiment, a torsion spring 245 is provided between the second spur gear 220 and the third spur gear 230. In the ninth embodiment, a compression coil spring 248 is provided between the second spur gear 220 and the third spur gear 230 as a gear-to-gear biasing member. On the inner wall of the outer cylindrical portion 224 of the second spur gear 220, locking walls 288 and 289 are formed instead of the locking wall 228 and the pin 227. Furthermore, on the third spur gear 230, a locking protrusion 239 is provided instead of the locking protrusion 236 and the pin 237.

[0194] The locking protrusion 239 is configured to be movable between the two locking walls 288, 289 of the second spur gear 220. A compression coil spring 248 is disposed between the locking walls 289 and the locking protrusion 239, biasing the third spur gear 230 in the throttle closing direction. The locking protrusion 239 is configured to abut against the locking wall 288 by the force of the compression coil spring 248. The locking walls 288, 289 and the locking protrusion 239 are configured according to the set length of the compression coil spring 248. In this embodiment, as in the seventh embodiment, the second spur gear 220 and the third spur gear 230 rotate integrally until the set load of the compression coil spring 248 is reached. When the set load is exceeded, the third spur gear 230 does not rotate, while the second spur gear 220 rotates. Even with this configuration, the same effects as the above-described embodiment are achieved.

[0195] (10th embodiment)

[0196] The locking mechanism of the tenth to sixteenth embodiments is different from that of the above-described embodiments, and therefore the description will be focused on this point. The locking mechanism described here can be combined with the power transmission mechanism of any embodiment. Figure 37A as well as Figure 37B The locking mechanism 507 of the seventh embodiment is schematically shown, wherein the second spur gear 220 (in Figure 37A The locking latch portion 229 pushes the locking pin 261 inward by the thrust force, thereby the locking latch portion 229 passes over the locking pin 261 and the pedal rod 20 is locked.

[0197] In order to generate a thrust on the locking pin 261 through the locking latch 229, at least one of the contact surfaces of the locking latch 229 and the locking pin 261 that come into contact when the locking latch 229 is moved in the locking direction is preferably an inclined surface. Similarly, at least one of the contact surfaces of the locking latch 229 and the locking pin 261 that come into contact when the locking latch 229 is moved in the unlocking direction is preferably an inclined surface. The angle of inclination and the like can be arbitrarily set according to the torque required for locking and unlocking. In addition, the inclined surface is not limited to a plane and can, for example, be a curved surface when the front end face of the locking pin 261 is formed into a dome shape. In addition, the locked position is not limited to the fully closed position and can also be the fully open position or an intermediate position. The same is true for the tenth embodiment.

[0198] exist Figure 38A 、 Figure 38B as well as Figure 38C In the locking mechanism 508 of the tenth embodiment shown in FIG. 1 , the locking pin 268 is formed of a flexible material such as rubber. Figure 38B As shown by the middle arrow, the locking stopper 229 moves to bend the locking pin 268, whereby the locking stopper 229 passes over the locking pin 268 and the pedal rod 20 is locked (see FIG. Figure 38C Even in this configuration, the same effects as those of the above-described embodiment are achieved. In this embodiment, the locking pin 268 corresponds to the "locking member," and the elastic force of the locking pin 268 itself corresponds to the "elastic force."

[0199] (11th embodiment)

[0200] exist Figure 39A 、 Figure 39B as well as Figure 39C , an eleventh embodiment is shown in FIG. In this embodiment, a locking mechanism 509 includes a magnetic body 301, a magnet 302, and an elastic member 303. The magnetic body 301 is provided on the gasket 21. The magnet 302 is provided at a portion of the housing 10 that is opposite to the magnetic body 301. The elastic member 303 is housed in a storage chamber 304 provided in the housing 10, with one end being latched to the inner wall of the storage chamber 304 and the other end being connected to the magnet 302. Alternatively, the magnet 302 may be provided on the gasket 21 side, and the magnetic body 301 may be provided on the housing 10 side.

[0201] like Figure 39B As shown, the magnetic body 301 and the magnet 302 attract each other, thereby being able to lock the liner 21 in the fully open state. Figure 39CAs shown, from the locked state, further stepping on the liner 21 compresses the elastic member 303, and the reaction force of the elastic member 303 pulls the magnetic body 301 and the magnet 302 apart, thereby releasing the locked state. Even with this structure, the same effects as the above embodiment are achieved. In this embodiment, the housing 10 corresponds to the "casing."

[0202] (12th to 15th embodiments)

[0203] exist Figure 40A as well as Figure 40B The 12th embodiment is shown in Figure 41A as well as Figure 41B The 13th embodiment is shown in Figure 42A as well as Figure 42B The 14th embodiment is shown in Figure 43A as well as Figure 43B The fifteenth embodiment is shown in FIG. Figures 40A to 43B As shown, an engaging portion 33 is formed on the arm 31, and the locking pins 311 and 312 are engaged to lock the pedal rod 20. By forming the engaging portion 33 so that the portion engaging with the locking pin 311 is multi-stage, the pedal rod 20 can be locked in stages at the intermediate position from fully closed to fully open. Figures 39A to 42B In the embodiment, the locking pins 311 and 312 constitute a locking mechanism 510 .

[0204] exist Figure 40A as well as Figure 40B In the twelfth embodiment shown, the locking pin 311 having a convex front end is driven by a motor 315 serving as a locking drive source. Figure 41A as well as Figure 41B In the thirteenth embodiment shown, the lock pin 312 having a concave tip is driven by a motor 315 .

[0205] exist Figure 42A as well as Figure 42B In the fourteenth embodiment shown, the lock pin 311 having a convex tip is driven by a solenoid 316 serving as a lock drive source. Figure 43A as well as Figure 43B In the fifteenth embodiment shown, the lock pin 312 whose front end is formed into a concave shape is driven by the solenoid 316 .

[0206] In this embodiment, a locking drive source is provided separately from the motor 40, which is the drive source for applying the reaction force. This increases the degree of freedom of the locking mechanism. The locking drive source can be a motor 315 as in the twelfth and thirteenth embodiments, or a solenoid 316 as in the fourteenth and fifteenth embodiments.

[0207] The locking mechanism 510 includes locking pins 311 and 312 that can restrict the movement of the pedal rod 20 by fitting with the fitting portion 33 formed on the pedal rod 20. This can appropriately restrict the movement of the pedal rod. The fitting portion 33 and the locking pins 311 and 312 may have any shape or other shape as long as they can lock the pedal rod 20 by fitting. Figures 40A to 43B Even with this configuration, the same effects as those of the above-described embodiment are achieved. In the twelfth to fifteenth embodiments, the lock pins 311 and 312 correspond to "locking members."

[0208] (16th embodiment)

[0209] exist Figure 44 , which shows a sixteenth embodiment. In this embodiment, the locking mechanism 511 includes a bevel gear 323, a feed screw 324, and a locking pad 325. The locking pad 325 is driven by the rotation of the motor 321, which serves as a locking drive source, via the motor gear 322, the bevel gear 323, and the feed screw 324. The locking pad 325 is clamped between the arm 31, thereby restricting the movement of the pedal lever 20 through friction.

[0210] In this embodiment, the locking mechanism 511 includes a locking pad 325 configured to clamp the pedal rod 20. The locking pad 325 clamps the arm 31, restricting the movement of the pedal rod 20. This allows the movement of the pedal rod 20 to be restricted at any position, from fully closed to fully open. As long as the pad, driven by the drive source, can clamp the pedal rod 20, the clamping position, gear configuration, and other factors may vary. Even with this configuration, the same effects as those of the aforementioned embodiment are achieved.

[0211] (Seventeenth embodiment)

[0212] The power transmission mechanism of the seventeenth to twenty-third embodiments differs from that of the above-described embodiments, and therefore the description will focus on this point. In the drawings relating to the seventeenth to twenty-third embodiments, the power transmission mechanism is schematically illustrated, and components other than the power transmission mechanism, such as the housing, are omitted as appropriate.

[0213] In the seventeenth to nineteenth embodiments, the linear force of the driving source is converted into the rotational force, and a reaction force is applied to the pedal rod 20. Figure 45 17th embodiment is shown in FIG. In this embodiment, a solenoid 41 is provided as a reaction force applying drive source. The solenoid 41 of this embodiment is configured such that the tip portion is extended when energized and the tip portion is retracted when de-energized.

[0214] The power transmission mechanism 120 includes a large link 121, a small link 122, and a torsion spring 123. The large link 121 is provided so as to always contact the arm 31. The small link 122 contacts the front end of the solenoid 41. The large link 121 and the small link 122 are connected by the torsion spring 123.

[0215] In this embodiment, the tip of the solenoid 41, which is pushed forward by energizing it, presses the small connecting rod 122 inward, applying a force to the large connecting rod 121 via the torsion spring 123, thereby generating a return reaction force on the arm 31. Furthermore, by further pressing the small connecting rod 122 with the tip of the solenoid 41, the large connecting rod 121 presses the pedal rod 20 to the fully closed position, locking the pedal rod 20 in place until the driver applies a certain pedal force. In other words, in this embodiment, the power is always on during locking, allowing the pedal rod 20 to be locked in the fully closed state. Even with this configuration, the same effects as the above-described embodiment are achieved.

[0216] (Eighteenth embodiment)

[0217] exist Figure 46 The 18th embodiment is shown in FIG. In the power transmission mechanism 124 of this embodiment, the small connecting rod 122 is connected to the front end of the solenoid 41 by a fixing component 125. In addition, the stroke of the solenoid 41 is set to be relatively large, and the small connecting rod 122 is pulled in when the power is not supplied, thereby causing the large connecting rod 121 to retreat to a position where the arm 31 and the large connecting rod 121 do not abut even when the pedal rod 20 is fully opened. Thus, when no reaction force is applied, the influence on the pedaling force can be avoided by separating the power transmission mechanism 124 from the pedal rod 20. In addition, the application of reaction force and the locking action are the same as those of the 17th embodiment. Even with such a configuration, the same effect as the above-mentioned embodiment is achieved.

[0218] (19th embodiment)

[0219] exist Figure 47 The nineteenth embodiment is shown in FIG. The connecting rod 127, the large connecting rod portion 128 and the small connecting rod portion 129 of the power transmission mechanism 126 of this embodiment are integrated. Figure 46 In the embodiment 18, the large connecting rod portion 128 is described as being able to retreat when no reaction force is applied, but it is also possible to have the large connecting rod portion 128 always in contact with the arm 31 as in the 17th embodiment. The application of reaction force and the locking operation are substantially the same as in the 17th embodiment. Even with this configuration, the same effects as those of the above embodiment are achieved.

[0220] (20th embodiment)

[0221] exist Figure 48, a 20th embodiment is shown in FIG. The power transmission mechanism 130 of this embodiment includes a bracket 131, a slider 132, and a reaction force adjustment force member 133. The bracket 131 is configured to be movable in a direction toward or away from the pad 21 of the pedal rod 20 by the extension and contraction of the solenoid 41. The slider 132 is configured to be able to abut against the pad 21 from the opening direction side of the pedal rod 20. The reaction force adjustment force member 133 is a compression coil spring, one end of which is housed in the bracket 131 and the other end of which is connected to the slider 132.

[0222] In this embodiment, energizing the solenoid 41 pushes up the bracket 131 and slider 132, causing the slider 132 to contact the pad 21. While the slider 132 is in contact with the pad 21, the bracket 131 is further pushed up, compressing the reaction-force adjustment biasing member 133, thereby adjusting the reaction force applied to the pad 21. In other words, in this embodiment, the linear force of the solenoid 41 is not converted into a rotational force, but rather a reaction force is applied to the pedal rod 20.

[0223] Furthermore, the solenoid 41 further pushes up the bracket 131 and the slider 132, causing the bracket 131 to abut against the slider 132. This solenoid force is directly transmitted to the arm 31, thereby locking the pedal rod 20 so that it remains stationary until the driver applies a certain pedal force. In other words, in this embodiment, the power is always supplied during locking, thereby locking the pedal rod 20 in the fully closed state. Even with this configuration, the same effects as the above-described embodiment are achieved.

[0224] (21st embodiment)

[0225] exist Figure 49 The power transmission mechanism 140 of this embodiment includes a rotating body 141, a guide rail 142, a moving block 143, and a link member 144. The rotating body 141 is connected to the output shaft of the motor 40 as a reaction force applying drive source and is rotated by the motor 40.

[0226] The guide rail 142 is formed into a linear shape extending from the rotating body 141 side toward the pad 21 side. The moving block 143 is provided so as to be movable along the guide rail 142 and capable of contacting the pad 21. A link member 144 is connected at one end to the rotating body 141 and at the other end to the moving block 143, converting the rotation of the rotating body 141 into linear motion of the moving block 143. By causing the moving block 143 to contact the pad 21, the torque of the motor 40 is transmitted to the pad 21 via the rotating body 141, the link member 144, and the moving block 143, thereby applying a reaction force to the pedal rod 20.

[0227] Furthermore, in this embodiment, when the pedal rod 20 is in the fully closed position and the movable block 143 is in contact with the gasket 21, the link member 144 becomes linear, thereby locking the pedal rod 20. In other words, in this embodiment, power is turned off during locking, thereby locking the pedal rod 20 in the fully closed state. Even with this configuration, the same effects as those of the above-described embodiment are achieved.

[0228] (Implementation 22)

[0229] exist Figure 50 The 22nd embodiment is shown in FIG. The power transmission mechanism 145 of this embodiment has a motor 40 (in Figure 50 In the present embodiment, the motor torque is transmitted to the pad 21 via the cam 146, thereby enabling a reaction force to be applied to the pedal rod 20.

[0230] Furthermore, by configuring the pedal rod 20 so that, when the pedal rod 20 is in the fully closed position, a straight line connecting the center of the cam 146 and the vertex farthest from the center is perpendicular to the pad 21, the pedal rod 20 is locked. In other words, in this embodiment, the pedal rod 20 can be locked in the fully closed position even when the power is not supplied during locking. Even with this configuration, the same effects as those of the above-described embodiment are achieved.

[0231] (23rd embodiment)

[0232] exist Figures 51 to 53 23rd embodiment is shown in FIG. The power transmission mechanism 150 of this embodiment includes a slider member 151. The slider member 151 is substantially the same as the slider member 81 of the fourth embodiment, and is driven by the solenoid 41 in this embodiment.

[0233] like Figure 51 As shown, the stroke of the solenoid 41 is set relatively large, and by pulling in the front end, the slider member 151 can be retracted to a position where it does not abut against the arm 31 in the entire range from fully closed to fully opened of the pedal rod 20. As a result, when no reaction force is applied, the pedal rod 20 and the slider member 151 are separated, thereby avoiding any influence on the pedaling force.

[0234] like Figure 52 As shown in FIG. 1 , when the arm 31 is in contact with the inclined surface 152, the slider member 151 is moved by the solenoid 41, thereby applying a reaction force to the pedal rod 20. Figure 53As shown, when the pedal rod 20 is in the fully closed state, the pedal rod 20 is locked when the slider member 151 is moved to a position where the arm 31 contacts the stopper 153. That is, in this embodiment, the pedal rod 20 can be locked in the fully closed state even when the power is not supplied during locking. Even with this configuration, the same effects as those of the above-described embodiment are achieved.

[0235] (Other embodiments)

[0236] In the above embodiment, the driving source is a DC motor. In other embodiments, the driving source may be a type of motor other than a DC motor, for example, a device other than a motor such as a solenoid may be used as a driving source. In addition, there may be multiple driving sources capable of applying a reaction force.

[0237] In the above embodiment, a floor-type throttle device (so-called "organ-type") is described. In other embodiments, the throttle device may be a suspended type (so-called "overhang-type"). Furthermore, the power transmission mechanism and locking mechanism may be configured differently from those in the above embodiment.

[0238] In the above embodiment, an integrated actuator and accelerator pedal are described. In other embodiments, a separate actuator and accelerator pedal may be connected to the floor instead of being connected. The present invention is not limited to the above embodiment and can be implemented in various ways without departing from the scope of the present invention.

[0239] The present invention has been described based on embodiments. However, it should be understood that the present invention is not limited to these embodiments and configurations. The present invention also encompasses various modifications and variations within the scope of equivalents. Furthermore, various combinations and methods, even those including only one element, or combinations and methods above or below these elements, fall within the scope and spirit of the present invention.

Claims

1. A throttle device comprising: a pedal lever that moves according to the stepping operation; at least one driving source capable of applying a force in a return direction, i.e., a reaction force, to the pedal rod; a power transmission mechanism capable of transmitting the driving force of the driving source to the pedal rod; and The locking mechanism can limit the movement of the pedal rod. The power transmission mechanism transmits the driving force of the driving source to the pedal rod through a rigid component. The rigid member is a cam driven by the driving source and capable of coming into contact with the pedal rod.

2. The throttle device according to claim 1, wherein: The locking mechanism can be unlocked by applying a force greater than a certain level to the pedal rod.

3. The throttle device according to claim 1, wherein: The power transmission mechanism includes a reaction force adjustment urging member, and transmits the driving force of the driving source to the pedal rod via the reaction force adjustment urging member.

4. The throttle device according to claim 3, wherein: The power transmission mechanism includes: a feed screw having one of an external thread and an internal thread, and driven by the drive source; and a bracket having the other of the external thread and the internal thread meshing with the feed screw. One end of the reaction force adjustment urging member contacts the bracket, and the other end contacts a rod contacting the pedal rod.

5. The throttle device according to claim 3, wherein: The power transmission mechanism includes: a feed screw having one of an external thread and an internal thread, and driven by the drive source; and a bracket having the other of the external thread and the internal thread meshing with the feed screw. One end of the reaction force adjustment urging member abuts against the bracket, and the other end abuts against the pedal rod.

6. The throttle device according to claim 1, wherein: A gear constituting a speed reduction mechanism is provided between the drive source and the cam.

7. The throttle device according to claim 6, wherein: The speed reduction mechanism includes a drive source side gear and a cam side gear coaxially arranged. An inter-gear force applying member is provided between the drive source side gear and the cam side gear. When the drive source side gear is rotated in the direction in which the reaction force is applied, The cam side gear rotates integrally with the drive source side gear until a set load of the inter-gear urging member is reached. When the set load of the inter-gear urging member is exceeded, the cam side gear stops rotating.

8. The throttle device according to claim 7, wherein: The lock mechanism includes a lock engaging portion that rotates integrally with the drive source side gear, and a lock member that can engage the lock engaging portion in a region where the cam side gear does not rotate but the drive source side gear rotates.

9. The throttle device according to any one of claims 1 to 8, wherein: The power transmission mechanism includes a linear motion conversion mechanism that converts the rotational force of the drive source into a linear motion direction.

10. The throttle device according to any one of claims 1 to 8, wherein: The power transmission mechanism is always in contact with the pedal rod.

11. The throttle device according to any one of claims 1 to 8, wherein: The above power transmission mechanism is: When a reaction force is applied to the pedal rod, the pedal rod contacts the pedal rod. When no reaction force is applied to the pedal rod, the pedal rod is separated from the pedal rod.

12. The throttle device according to any one of claims 1 to 8, wherein: The locking mechanism can restrict movement of the pedal lever at at least one of a fully closed position and a fully open position of the pedal lever.

13. The throttle device according to any one of claims 1 to 8, wherein: The locking mechanism can restrict the movement of the pedal lever at an intermediate position between the fully closed position and the fully open position of the pedal lever.

14. The throttle device according to any one of claims 1 to 8, wherein: The locking mechanism is driven by the driving source for applying a reaction force to the pedal rod.

15. The throttle device according to any one of claims 1 to 8, wherein: A locking drive source for driving the locking mechanism is provided separately from the drive source for applying the reaction force.

16. The throttle device according to any one of claims 1 to 8, wherein: The locking mechanism is capable of continuously maintaining the state in which the movement of the pedal rod is restricted when power to a driving source related to driving the locking mechanism is turned off.

17. The throttle device according to any one of claims 1 to 8, wherein: have: a position sensor for detecting a position of the drive source or a member constituting the power transmission mechanism; and The control unit controls the driving source based on the detection value of the position sensor.

18. A throttle device comprising: a pedal lever that moves according to the stepping operation; at least one driving source capable of applying a force in a return direction, i.e., a reaction force, to the pedal rod; a power transmission mechanism capable of transmitting the driving force of the driving source to the pedal rod; and The locking mechanism can limit the movement of the pedal rod. The power transmission mechanism includes a reaction force adjustment urging member, which transmits the driving force of the driving source to the pedal rod via the reaction force adjustment urging member. The power transmission mechanism includes: a feed screw having one of an external thread and an internal thread, and driven by the drive source; and a bracket having the other of the external thread and the internal thread meshing with the feed screw. One end of the reaction force adjustment urging member abuts against the bracket, and the other end abuts against a rod abutting against the pedal rod. The locking mechanism includes the bracket, The bracket directly or indirectly contacts the pedal rod, thereby restricting the movement of the pedal rod.

19. A throttle device comprising: a pedal lever that moves according to the stepping operation; at least one driving source capable of applying a force in a return direction, i.e., a reaction force, to the pedal rod; a power transmission mechanism capable of transmitting the driving force of the driving source to the pedal rod; and The locking mechanism can limit the movement of the pedal rod. The locking mechanism comprises: a locking stopper provided in a power transmission path from the driving source to the pedal rod; and a locking member capable of moving or deforming based on elastic force. The lock engaging portion passes over the lock member and is engaged with the lock member, thereby restricting movement of the pedal lever.

20. A throttle device comprising: a pedal lever that moves according to the stepping operation; at least one driving source capable of applying a force in a return direction, i.e., a reaction force, to the pedal rod; a power transmission mechanism capable of transmitting the driving force of the driving source to the pedal rod; and The locking mechanism can limit the movement of the pedal rod. The locking mechanism comprises: a magnet provided on one side of the pedal rod and the housing; and a magnetic body provided on the other side of the pedal rod and the housing. The magnet and the magnetic body attract each other, thereby restricting the movement of the pedal lever.

21. A throttle device comprising: a pedal lever that moves according to the stepping operation; at least one driving source capable of applying a force in a return direction, i.e., a reaction force, to the pedal rod; a power transmission mechanism capable of transmitting the driving force of the driving source to the pedal rod; and The locking mechanism can limit the movement of the pedal rod. The locking mechanism includes a locking member that is engaged with an engaging portion formed on the pedal rod to restrict movement of the pedal rod.

22. A throttle device comprising: a pedal lever that moves according to the stepping operation; at least one driving source capable of applying a force in a return direction, i.e., a reaction force, to the pedal rod; a power transmission mechanism capable of transmitting the driving force of the driving source to the pedal rod; and The locking mechanism can limit the movement of the pedal rod. The locking mechanism includes a locking washer provided so as to be able to sandwich the pedal rod, and the locking washer sandwiches the pedal rod to restrict movement of the pedal rod.

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