JP2013208998A - Accelerator opening detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an operation feeling of an accelerator grip and accuracy of detecting accelerator opening.SOLUTION: An accelerator opening detection device includes a first gear 39 provided in a rotating body that rotates following an accelerator grip and an engagement part 532 to be engaged to the accelerator grip in a rotating direction, to detect an operation amount of the accelerator grip by means of a sensor, on the basis of rotation amount of a second gear 40 meshed with the first gear 39. A return spring 52 is provided between a rotating body and a housing to bias the rotating body in a full-close direction of the accelerator grip. The engagement part (dowel) 532 is provided opposite an end support part C on the basis of a second straight line L2 orthogonal to a first straight line L1 that connects the center CR of the rotating body and the end support part C of the return spring 52 in axial view, and provided in a region where resistance R is applied in a closing direction of the accelerator grip when a rotating force is applied to the dowel 532.

Description

  The present invention relates to an accelerator opening detection device, and more particularly to an accelerator opening detection device that detects a rotation position of an accelerator grip as an electric signal.

  Patent Document 1 discloses a motorcycle that includes an accelerator opening detection device that detects the rotation position of an accelerator grip as an electrical signal, and that has a configuration in which a throttle valve is opened and closed by an actuator based on the detection result of the accelerator opening detection device. Has been. In this prior art, from the rotation part which has a 1st gear part rotated in response to rotation of an accelerator grip, the 2nd gear part rotated with rotation of a 1st gear part, and the rotation amount of a 2nd gear part A detecting means for detecting the opening degree of the accelerator grip, and a return spring is interposed between the casing of the accelerator opening degree detecting device and the accelerator grip in order to rotate the accelerator grip in the fully closing direction of the accelerator. ing.

JP 2002-264876 A

  In the conventional accelerator opening detection device disclosed in Patent Document 1, the return spring biases the accelerator grip in the fully closed direction, so that a force for rotating the accelerator grip acts in the fully closed direction. It has become. By the way, when adopting a dowel structure in which the first gear part and the accelerator grip are connected by the convex part and the concave part, the component in the left and right direction at the point (force point) at which the force is applied from the accelerator grip to the first gear part is the closing direction. If the grip is operated further in the closing direction than in the fully closed position, it can be detected correctly, but depending on the position of the power point, the left and right components act in the opening direction. In such a situation, it may be detected that the grip is operated in the opening direction even though the grip is operated on the closing side.

  An object of the present invention is to provide an accelerator opening detecting device that solves the above-described problems and can ensure detection accuracy even when the accelerator grip is operated further in the closing direction from the fully closed direction of the accelerator. It is in.

  The present invention for achieving the above object includes an accelerator grip (22) and a first gear (39) that rotates following the operation of the accelerator grip (22). Detecting means for detecting the amount of operation of the accelerator grip from the amount of rotation of the rotating body having the engaging portion (532) engaged in the rotating direction and the second gear (40) meshing with the first gear (39). 54), a housing (38) for housing the rotating body and the detection means (54), and the housing (38), the rotating body is in the fully closed direction of the accelerator grip (22). In the accelerator opening detecting device having an elastic member (52) biasing the rotating member, the engaging portion (532) includes the center (CR) of the rotating body and the housing (38) in the axial direction of the rotating body. Before A second straight line (L2) orthogonal to the first straight line (L1) connecting the end support part (C) of the elastic member is provided at a position opposite to the end support part (C); When rotational force is applied to the engaging portion (532), the component of the force is in a direction perpendicular to the tangent line between the first gear (39) and the second gear (40), and the elastic member (52 The first feature is that it is provided in a region that acts in the same direction as the direction of the urging force by.

  Further, according to the present invention, the end support portion (C) and the engagement portion (532) of the four regions divided by the first straight line (L1) and the second straight line (L2) Is in the opposite position and has a second feature in that it is set in a region on the side where the second gear (39) is provided with respect to the first straight line (L1).

  Moreover, this invention is a convex part (532L, 532R) with which the said engaging part (532) engages with the several recessed part (223) provided in the said accelerator grip (22) side, The said several convex part ( 532) is provided in the region, and when the accelerator grip (22) is operated in the closing direction of the accelerator, the convex portion (532L) provided in the region is more than the remaining convex portion (532R). A third feature is that the positions of the plurality of convex portions (532) are set so as to be engaged with the concave portion (223) first.

  In addition, the present invention has a fourth feature in that the elastic member includes a coil spring disposed coaxially with the rotating body.

  Further, according to the present invention, the first gear (39) includes a gear convex portion (393) that fits into the concave portion (223), and the gear convex portion (393) corresponds to the gear convex portion (393). There is a fifth feature in that it is covered with a metal intermediate member (53) having a concave portion (531) formed along the shape and a convex portion (532) along the concave portion (531).

  The sixth feature of the present invention is that the output characteristic of the detecting means (54) has a dead zone so that the accelerator grip (22) generates an output at or above a preset accelerator opening. is there.

  According to the present invention having the first and second features, since the position of the engaging portion that engages with the accelerator grip in the rotational direction is set in the region, the accelerator grip is operated further from the fully closed position to the closed side. Even so, it is possible to prevent the force caused by the operation in the closing direction from displacing the second gear correctly in the closing direction of the accelerator and to displace it in the opening direction. Therefore, it is possible to prevent the operation of further rotating from the side toward the closing side from being detected as the opening operation of the accelerator.

  According to the present invention having the third feature, by providing a plurality of convex portions, it is possible to prevent the force applied to the rotating body from being biased to one place when the accelerator grip is operated. ) And the force applied to the rotating body can be distributed to each convex portion to reduce the force applied to one convex portion, so that the degree of wear of the convex portion and the portion engaged with the convex portion can be reduced. can do.

  According to the present invention having the fourth feature, the accelerator opening detecting device can be downsized by arranging the elastic member coaxially with the rotating body.

  According to the present invention having the fifth feature, by interposing a metal intermediate member, it is possible to reduce the degree of wear of the contact portion of the concavo-convex portion that transmits the force from the first gear to the rotating body.

  According to the present invention having the sixth feature, since the sensor output is generated after the operation torque is stabilized, the operational feeling at the beginning of opening the accelerator grip can be improved.

1 is a right side view of a motorcycle including an accelerator opening detection device according to an embodiment of the present invention. It is sectional drawing of the accelerator opening degree detection apparatus which cut | disconnected the upper and lower division type housing in the upper-and-lower fastening part and was seen from the vehicle body left side. FIG. 3 is a sectional view taken along arrow 3-3 in FIG. 2. It is a principal part perspective view of the accelerator opening detection device seen from the accelerator grip side. It is a front view of a spring guide. FIG. 6 is an arrow view at a position 6-6 in FIG. 5. FIG. 4 is an exploded view of the accelerator opening detection device. FIG. 8 is an arrow view at the 8-8 position in FIG. 3 showing a preferred arrangement of dowels for transmitting the rotation of the grip pipe to the first gear. It is a schematic diagram of the first gear and the second gear when the grip pipe is further rotated from the fully closed position in the closing direction and the concave portion of the grip pipe hits the left dowel before the right dowel. It is a schematic diagram of the first gear and the second gear when the grip pipe is rotated further in the closing direction from the fully closed position and the concave portion of the grip pipe hits the right dowel before the left dowel. It is a figure which shows the output characteristic of an opening degree sensor.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a right side view of a motorcycle which is a vehicle provided with an accelerator opening detection device according to an embodiment of the present invention. In FIG. 1, a motorcycle 1 is equipped with a water-cooled four-cycle engine 4. The body frame 3 of the motorcycle 1 includes a main frame 31 that is joined to a head pipe 30 at a tip end and extends obliquely downward and rearward, and a seat frame 32 and a subframe 33 that extend obliquely upward and rearward from the main frame 31. The engine 4 suspended from the main frame 31 has a cylinder part 41 and a crank chamber 42 located below the cylinder part 41. One end (lower end) of the intake pipe 5 is connected to the cylinder portion 41, and an air cleaner 6 is connected to the other end (upper end) of the intake pipe 5. Between the cylinder part 41 and the air cleaner 6, a throttle valve, a throttle drive motor that opens and closes the throttle valve, and a fuel injection device (both not shown) are provided. Further, one end (front end) of the exhaust pipe 7 is connected to the front part of the cylinder part 41, and the muffler 9 is connected to the other end (rear end) of the exhaust pipe 7. The muffler 9 extends upward from the lower portion of the vehicle body and terminates rearward of the vehicle body at the center in the vehicle width direction.

  A reduction gear (not shown) is connected to the rear of the crank chamber 42, and an output shaft of the connection device, that is, an output shaft 43 of the engine 2 extends in the vehicle width direction. The drive side sprocket 10 is fixed to the output shaft 43, and the drive chain 12 is hung between the drive side sprocket 10 and the driven side sprocket 11 provided on the rear wheel WR. The rear wheel WR is rotatably supported with respect to the rear wheel shaft 15 by a swing arm 14 supported by a pivot 13 on the main frame 31. Note that the lower end of the rear cushion 15 supported at the upper end by the main frame 31 is connected to the swing arm 14 via a link mechanism. A radiator 16 is disposed in front of the engine 4.

  A front fork 19 is provided on the left and right sides of the head pipe 30. The front fork 19 includes a pair of left and right pipe members extending vertically and supports the front wheel WF with the front wheel shaft 18 at the lower end. A steering handle 21 is attached to the upper portion of the front fork 19 via a top bridge 20. A right grip 22 that is an accelerator grip and an accelerator opening detecting device 23 that detects an operation opening of the right grip 22, that is, an accelerator opening, are provided on the right portion of the steering handle 21. A throttle drive motor (not shown) drives the throttle valve based on the accelerator operation opening (grip operation opening) detected by the accelerator opening detector 23. That is, the throttle valve is controlled to open and close by a so-called throttle-by-wire system.

  A bracket device 24 that protrudes forward from the head pipe 30 is provided with a meter device 26 that includes a vehicle speedometer, an engine tachometer, and the like. A front cowl 18 having a headlight 25 is provided in front of the meter device 26. The front cowl 18 is supported by a bracket 24 and sub brackets or ribs (not shown) branched from the bracket 24. Side cowls 34 are connected to the left and right sides of the front cowl 18 so as to extend rearward therefrom and cover the side portions of the vehicle body.

  The main frame 31 includes a pair of left and right members, and a fuel tank 35 having an outer shape formed so as to cover the air cleaner 6 is mounted. A driver seat 36 and a passenger seat 37 attached on the seat frame 32 are provided at a rear position of the fuel tank 35.

  2 is a cross-sectional view of the accelerator opening detecting device 23 as seen from the left side of the vehicle body by cutting a vertically divided housing at its upper and lower fastening portions, FIG. 3 is a cross-sectional view taken along the line 3-3 in FIG. 2, and FIG. It is a principal part perspective view of the accelerator opening degree detection apparatus 23 seen from the grip side. 2 to 4, the housing 38 of the accelerator opening detecting device 23 is a vertically divided type composed of an upper portion (upper housing) 381 and a lower portion (lower housing) 382. The upper housing 381 and the lower housing 382 are The two mounting bolts 383 and 384 are connected to each other. Provided in the housing 38 are a first gear 39 that rotates in response to an operation of a right grip (hereinafter referred to as “accelerator grip”) 22, and a second gear 40 and a third gear 45 that mesh with the first gear 39. It is done. Since the first gear 39 has a larger diameter than the second gear 40 and the third gear 45 and meshes with both the second gear 40 and the third gear 45, the rotation of the first gear 39 causes the second gear 40 to rotate. And the third gear 45 is transmitted at the same time and at an increased speed. It should be noted that the tooth portion T formed on the outer periphery of the first gear 39 is not the entire outer periphery, but a part of the outer periphery so that the second gear 40 and the third gear 45 with which the tooth portion T meshes can rotate once. What is necessary is just to be formed.

  The first gear 39, the second gear 40, and the third gear 45 are accommodated in a case 48 including an inner case 46 and an inner case cover 47 that covers the inner case 46. The inner case cover 47 is attached to the inner case 46 using set screws 49 at four locations, and the case 48 is attached to the housing 38 via the inner case cover 47.

  The accelerator grip 22 includes a grip pipe 221 and a rubber grip cover (not shown) fitted on the outer periphery of the grip pipe 221. The grip pipe 221 through which the handle pipe 222 penetrates is rotatably supported by the housing 38 with the left end sandwiched between the upper housing 381 and the lower housing 382. The first gear 39 provided coaxially with the grip pipe 221 includes a hub 391 whose outer peripheral surface is slidably in contact with an inner peripheral surface of a through hole 472 formed in the inner case cover 47. The inner case cover 47 is rotatably supported via the. The first gear 39 has a ring shape in which a through hole 392 is formed so that the right end portion of the steering handle 21 extending from the left side of the vehicle body to the inner peripheral surface of the grip pipe 221 can pass therethrough.

  A metal spring holder 53 that holds a return spring (return spring) 52 of the grip pipe 221 is disposed between the first gear 39 and the grip pipe 221. The return spring 52 has a coil shape and is provided coaxially with the first gear 39. The first gear 39 includes a portion (gear convex portion) 393 protruding toward the grip pipe 221, and the spring holder 53 includes a portion (holder concave portion) 531 that receives the gear convex portion 393. The back side of the holder recess 531, that is, the grip pipe 221 side, has a convex shape so as to engage with a recess (pipe recess) 223 formed at the left end of the grip pipe 221, thereby forming a dowel 532. In this manner, the spring holder 53 engages with one end of the return spring 52 to hold the return spring 52 and holds the first gear 39 between the pipe recess 223 and the gear projection 393, while the pipe recess 223. It functions as an intermediate member that connects the gear projection 393.

  When the grip pipe 221 is rotated by this uneven connection structure, the dowel 532 of the spring holder 53 engaged with the pipe recess 223 contacts the gear protrusion 293 of the first gear 39 and the first gear 39 rotates. Is done. The rotation of the rotating body including the spring holder 53 and the first gear 39 is transmitted from the first gear 39 to the second gear 40 and the third gear 45.

  The spring holder 53 holds the return spring 52 so as to apply a biasing force to the first gear 39 by rotating the grip pipe 221 toward the closing side of the accelerator. The return spring 52 is disposed between the spring holder 53 and the inner surface of the right wall portion of the housing 38 (the wall portion on the grip pipe 221 side), one end portion 521 is locked to the spring holder 53, and the other end 522 is the lower housing. It is latched by the engagement hole 385 of 382 (refer FIG. 4).

  The second gear 40 includes a sensor magnet 55 that activates an opening sensor 54 that is a non-contact sensor for detecting the accelerator opening, and is rotatable to the inner case cover 47 by a second gear support shaft 56. Supported. The opening sensor 54 detects the magnet 55 of the second gear 40 and outputs an accelerator opening signal. A harness 70 for sending an accelerator opening signal to an ECU (not shown) passes through the case 48 and the lower housing 383 and is pulled out.

  On the outer side of the inner case cover 47 (on the side opposite to the side where the second gear 40 is disposed), a sensor magnet return that biases the second gear 40 in one direction in order to suppress backlash of the second gear 40. A sensor spring holder 58 that houses a spring (sensor return spring) is screwed (see FIG. 7 for sensor return spring and set screw).

  The third gear 45 is supported by a third gear support shaft 59, and a friction unit 60 which is a resistance force adding means capable of adding a resistance force to the third gear 45 in the rotational direction, and the third gear 45. In order to reduce the influence of backlash of the first gear 39, a sub gear 61 that acts as a ceramic gear in cooperation with the third gear 45 is attached. The third gear 45 constitutes a ceramic gear together with the sub gear 61 as a main gear.

  The ceramic gear composed of the third gear 45 and the sub gear 61 as the main gear is a sub gear with respect to the third gear 45 by a spring 62 (referred to as “ceramic spring”) provided between the third gear 45 and the sub gear 61. 61 is a gear that is biased in the circumferential direction and is configured to reduce backlash by sandwiching the teeth of the first gear 39 between the teeth of the third gear 45 and the ceramic gear 61. The Serasi gear is also called a “scissor gear” or pinching gear.

  The friction unit 60 is made of, for example, a rubber resistance adding member or silicon oil that is a cylindrical holder so as to generate a frictional resistance between the third gear support shaft 59 and the third gear support shaft 59. It is possible to adopt a structure in which the holder is fixed to the inner case 46. As the friction unit 60, for example, what is known as a rotary damper can be adopted. The friction unit 60 is disposed coaxially with the third gear support shaft 59 that supports the third gear 45. In FIG. 7 described later, the appearance of this holder is shown as the friction unit 60.

  5 is a front view of the spring holder 53, and FIG. 6 is a view taken in the direction of arrow 6-6 in FIG. The spring holder 53 is made of metal, and includes a disc portion 535 in which dowels 532 are formed at two locations, and two standing plate portions 536 and 537 that rise from the outer periphery of the disc portion 535. These end portions protrude from the disc portion 535 to the outer periphery to form a spring end receiver 538. The return spring 52 is disposed between the dowel 532 and the standing plate portions 536 and 537, and one end portion 521 is locked to the spring end receiver 538. The other end 522 of the return spring 52 is locked to the lower housing 382.

  FIG. 7 is an exploded view of the accelerator opening detection device 23. The components of the accelerator opening detection device 23 will be described according to an example of the assembly order. First, the return spring 52 is held by the spring guide 53, and the spring guide 53 is assembled to the vehicle body center side end 224 of the grip pipe 221 together with the return spring 52 so that the pipe recess 223 is engaged with the dowel 532. At this time, the return spring 52 is placed on a spring end receiver 538 projecting radially from the ring-shaped spring guide 53.

  Next, the first gear 39 is assembled to the spring guide 53 through the opening 461 of the inner case 46. At this time, it is assembled so that the gear convex portion 393 of the first gear 39 engages with the holder concave portion 531 of the spring guide 53.

  Next or separately from the assembly of the first gear 39 and the like, the second gear 40 and the third gear 45 are assembled to the case 48. In the inner case 46, a second gear support shaft 56 and a third gear support shaft 59 are erected vertically in advance to the inner case 46. Then, the second gear 40 is supported on the second gear support shaft 56, and the friction unit 60, the ceramic gear 61, and the ceramic spring 62 are supported on the third gear shaft 59 in this order. The third gear support shaft 59 is erected on the bottom of a bulging portion 462 formed behind the inner case 46, and the friction unit 60 is accommodated in the bulging portion 462. Note that the bulging portion 462 may be provided as a friction unit holder using a component different from the inner case 46.

  Then, the inner case cover 47 is put on the inner case 46 in which the second gear 40 and the third gear 45 are respectively incorporated in the second gear support shaft 56 and the third gear support shaft 59, and the inner case 46 is covered with four set screws 49. 46 is fixed. At this time, the portion of the first gear 39 on the side where the dowel 532 is provided is loosely fitted in the through hole 461 of the inner case 46, and the hub 391 is loosely fitted in the through hole 471 of the inner case cover 47. The ends of the second gear support shaft 56 and the third gear support shaft 59 are passed through the bearing portion 473 and the bearing portion 474 formed in the inner case cover 47. The third gear support shaft 59 is supported by the bearing portion 474, but the second gear support shaft 56 protrudes outward through the hole 473, and the sensor spring holder 58 is put on the protruding portion to be fixed to the inner case cover 47. It is fixed with screws 65.

  The sensor spring holder 58 accommodates a sensor return spring 66 as second gear biasing means. One end of the sensor return spring 66 is engaged with the sensor spring holder 58 and the other end is connected to the through hole 473 of the inner case cover 47. The second gear 40 is engaged with the long hole 475 formed concentrically in a circular arc shape. By the sensor spring holder 58, the second gear 40 applies an urging force to the first gear 39 in the circumferential direction to reduce the influence of backlash of the first gear 39 and the second gear 40.

  The inner case 46 is provided with bosses 464, 465, 466. After the inner case cover 47 is attached to the inner case 46 with a set screw 49, the end 224 of the grip pipe 221, the return spring 52, the spring is attached to the lower housing 382. An assembly such as the guide 53, the case 48, and the sensor spring holder 58 is accommodated. The assembly is fixed to the lower housing 382 by screwing three set screws 75 passed from the outside of the lower housing 382 into the bosses 464, 465, 466.

  Finally, the upper housing 381 and the lower housing 382 cover the assembly such as the end 224 of the grip pipe 221, the return spring 52, the spring guide 53, the case 48, and the sensor spring holder 58, and use the bolts 383 and 384. The upper housing 381 and the lower housing 382 are fastened together to complete the assembly.

  The arrangement of the dowels 532 of the spring guide 53 is preferably set as follows. FIG. 8 is an arrow view at the 8-8 position in FIG. 3 showing a preferred arrangement of the dowels 532 for transmitting the rotation of the grip pipe 221 to the first gear 39, and shows only the main part. In FIG. 8, the return spring 52 has one end 521 engaged with the spring end receiver 538 of the spring guide 53 and the other end 522 engaged with the engagement hole 385 of the lower housing 382. The spring 52 biases the accelerator in the closing direction (clockwise in FIG. 8). That is, one end 521 of the return spring 52 presses the spring guide 53 downward at the portion C in contact with the spring guide 53. Then, a reaction force or a drag force R is generated by this pressing force, and the spring guide 53 is displaced upward with the contact portion C as a fulcrum. The direction of the drag R is an upward direction orthogonal to the straight line L1 connecting the contact portion C and the center CR of the spring guide 53. Therefore, when a force is applied in the direction in which the accelerator grip (grip pipe) is further closed from the fully closed position, the force point for applying the rotation is at a position where it acts in the same direction as the drag R (upward), that is, the straight line L1. The second gear 40 related to the opening sensor 54 is urged in the closing direction when it is on the left side in the figure with respect to the straight line L2 orthogonal to. However, when the force point for applying rotation is at a position acting in the opposite direction to the drag R, that is, when the force point is on the right side of the line L2 orthogonal to the straight line L1, a downward force is applied to the dowel 532. Therefore, the second gear 40 is urged in a direction corresponding to the opening direction of the accelerator operation.

  For example, among a plurality of dowels 532 (two in this example) of the spring guide 53 to which a rotational force is applied, a pipe recess of the grip pipe 221 is located on a dowel 532R located on the right side in the drawing with respect to the straight line L2 orthogonal to the straight line L1. When the 223 comes into contact with the front side of the dowel 532L located on the left side of the straight line L2 orthogonal to the straight line L1, the opening sensor 54 operates in the opening direction even though the accelerator is operated in the closing direction. May be detected.

  Further description will be given with reference to FIGS. FIG. 9 shows the spring guide 53 (first gear 39) and the second when the grip pipe 221 is rotated further in the closing direction from the fully closed position and the pipe recess 223 hits the left dowel 532L before the right dowel 532R. FIG. 10 is a schematic diagram of the gear 40. FIG. 10 shows a spring guide 53 (when the grip pipe 221 is further rotated from the fully closed position in the closing direction so that the pipe recess 223 hits the right dowel 532R before the left dowel 532L. FIG. 3 is a schematic diagram of a first gear 39) and a second gear 40.

  In the case of FIG. 9, when the grip pipe 221 is turned in the closing direction and the pipe recess 223 hits the left dowel 532L, the first gear 39 tends to be lifted with the contact portion C (see FIG. 8) as a fulcrum. An upward force component F1 that is substantially perpendicular to the tangent line CL between the first gear 39 and the second gear 40 is generated. Since the component of this force is the same upward as the drag force F2 of the return spring 52, a force that displaces the second gear 40 in the accelerator opening direction is not generated.

  On the other hand, in the case of FIG. 10, when the grip pipe 221 is turned in the closing direction and the pipe recess 223 hits the right dowel 532R, the first gear 39 is pushed down with the contact portion C (see FIG. 8) as a fulcrum. Try to. This pressing-down direction is not perpendicular to the tangent line CL between the first gear 39 and the second gear 40 but is biased to the first gear 39 side (right side) arranged to the right with respect to the second gear 40. . That is, a pressing force F3 is generated in a direction opposite to the drag force F2 of the return spring 52 and slightly deviated to the right. The force F3 generates a component force F30 perpendicular to the tangent line CL and a component force F31 parallel to the tangent line CL. Of these, the component force F31 parallel to the tangent line CL causes the second gear 40 to move. It becomes the force to rotate in the direction of opening the accelerator.

  Therefore, when the accelerator operation is performed in the closing direction, the positional relationship between the right dowel 532R and the left dowel 532L is set so that the pipe recess 223 contacts the left dowel 532L before the right dowel 532R. Set it. That is, when the accelerator is operated in the closing direction, the pipe recess 223 is set to contact the side surface S2 of the dowel 532L before the side surface S1 of the dowel 532R.

  It is only necessary that the position of the surface S2 is set so that the rotation of the grip pipe 221 is transmitted to the first gear 39 via the spring guide 53 on the right side of the straight line L2. The surface S2 that comes into contact first may be positioned within the angular range of the lower left portion of the region divided by the straight line L1 and the straight line L3 perpendicular to the tangent line CL and the straight line L2.

  Thus, when the accelerator grip, that is, the grip pipe 221 is rotated in the closing direction, of the dowel 532L and the dowel 531R, the side surface S2 of the dowel 532L and the pipe recess of the grip pipe 221 before the side surface S1 of the dowel 532R. By setting the positional relationship so that it comes into contact with H.223, when the accelerator operation is performed closer to the closing side than the fully closed position, it is prevented that the operation is erroneously determined to be the accelerator opening operation.

  The output characteristics of the opening sensor 54 are shown in FIG. In FIG. 11, the vertical axis represents the sensor output (voltage), and the horizontal axis represents the accelerator opening or the throttle opening TH. The sensor output does not produce sensor output until the accelerator grip 22 reaches the planned opening TH1, and has a dead zone so that if the accelerator opening is greater than or equal to the planned opening, an output corresponding to the accelerator opening is produced. ing. Since the sensor output is generated after the operation torque is stabilized, the operational feeling (operation feeling) at the beginning of opening the accelerator grip 22 can be improved.

  In the present embodiment, the dowels 532 are provided at a plurality of locations on the spring holder 53 so that the rotation of the accelerator grip is transmitted to the first gear 39, so that the force is biased to one location in the circumferential direction of the first gear 39. As a result, there is an effect that a smooth operation feeling is obtained and the degree of consumption of the dowel 532 is reduced. However, for simplification, the number of rotation transmission parts by the dowels 532 is not limited to a plurality and may be single.

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 22 ... Accelerator grip, 39 ... 1st gear, 40 ... 2nd gear, 45 ... 3rd gear, 52 ... Return spring, 54 ... Opening sensor (detection means), 56 ... 2nd gear support shaft 58 ... Sensor spring holder, 59 ... Third gear support shaft, 60 ... Friction unit (resistance force adding means), 61 ... Sub gear, 66 ... Sensor return spring, 221 ... Grip pipe, 532 ... Dowel (convex part), 538 ... Spring end receiver

Claims (6)

An engagement grip (22) having an accelerator grip (22) and a first gear (39) that rotates following the operation of the accelerator grip (22), and is engaged with the accelerator grip (22) in the rotational direction. 532), a detecting means (54) for detecting an operation amount of the accelerator grip from a rotation amount of the second gear (40) meshing with the first gear (39), the rotating body and the detecting means A housing (38) for housing (54), and an elastic member (52) provided between the housing (38) and biasing the rotating body in the fully closed direction of the accelerator grip (22). In the accelerator opening detection device having,
The engaging portion (532) connects a center (CR) of the rotating body and an end support portion (C) of the elastic member provided in the housing (38) as viewed in the axial direction of the rotating body. When the second straight line (L2) orthogonal to the straight line (L1) is provided as a reference at a position opposite to the end support part (C), and rotational force is applied to the engagement part (532) In the region where the component of the force acts in the direction perpendicular to the tangent line between the first gear (39) and the second gear (40) and in the same direction as the direction of the urging force by the elastic member (52). An accelerator opening detecting device characterized in that the accelerator opening detecting device is provided.   The engagement portion (532) is at a position opposite to the end support portion (C) in the four regions divided by the first straight line (L1) and the second straight line (L2), 2. The accelerator opening degree detecting device according to claim 1, wherein the accelerator opening degree detecting device is set in a region where the second gear (39) is provided with respect to the first straight line (L1).   The engaging portion (532) is a convex portion (532L, 532R) engaged with a plurality of concave portions (223) provided on the accelerator grip (22) side, and one of the plurality of convex portions (532). When the accelerator grip (22) is operated in the accelerator closing direction, the convex portion (532L) provided in the region is formed in the concave portion (532R) before the remaining convex portion (532R). The position of the plurality of convex portions (532) is set so as to be engaged with H.223, respectively, and the accelerator opening degree detecting device according to any one of claims 1 to 3.   The accelerator opening detection device according to any one of claims 1 to 3, wherein the elastic member is a coil spring disposed coaxially with the rotating body.   The first gear (39) includes a gear protrusion (393) that fits into the recess (223), and the gear protrusion (393) is formed along the shape of the gear protrusion (393). 5. A metal intermediate member (53) having a concave portion (531) and a convex portion (532) along the concave portion (531). Accelerator position detector.   6. The dead zone according to claim 1, wherein an output characteristic of the detecting means (54) has a dead zone so that the accelerator grip (22) generates an output at a predetermined accelerator opening or more. An accelerator opening detection device according to claim 1.