JP2008274925A - Accelerator position sensor arrangement structure for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accelerator position sensor arrangement structure for a motorcycle that prevents an increased vehicle-width without changing operational feeling of a throttle. <P>SOLUTION: An accelerator position sensor 100 is connected to a throttle grip via a pair of throttle cables 115, 125 and disposed externally of main frames 24 extending from a head pipe 12 toward the rearward of a vehicle body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an accelerator position sensor arrangement structure for a motorcycle in which an operation of a throttle grip is detected by an accelerator position sensor and a throttle valve for controlling an intake air amount of an engine is driven by a control motor.

In motorcycles, there is a vehicle in which a throttle grip and a throttle valve that controls the intake air amount of the engine are connected via a throttle wire, and the throttle valve is manually operated according to the throttle operation. There is a vehicle in which the throttle position sensor is detected and the throttle valve is driven by a control motor. In a motorcycle that drives a motor of this type of throttle valve, an accelerator position sensor is arranged at one shaft end of the throttle valve in the throttle body connected to the engine. (For example, refer patent document 1).
JP 2001-246960 A

In the conventional configuration in which the throttle valve is driven by a motor, the throttle wire is connected to almost the same position as the vehicle that manually operates the throttle valve, so that the wiring of the throttle wire can be made the same, and the feeling of operation of the throttle is almost the same. There is a merit that you can.
However, since the accelerator position sensor is arranged on the side of the throttle body, a space for arranging the sensor on the side of the throttle body is required. For this reason, when a throttle body is arrange | positioned between a pair of right and left main frames of a vehicle body frame, it becomes necessary to widen the clearance gap between main frames, and the problem that a vehicle width becomes wide arises.

  The present invention has been made in view of the circumstances described above, and it is an object of the present invention to provide an accelerator position sensor arrangement structure for a motorcycle that can suppress an increase in vehicle width without changing the operational feeling of the throttle.

In order to solve the above-described problems, the present invention detects an operation of a throttle grip by an accelerator position sensor, and an accelerator position of a motorcycle that drives a throttle valve for controlling an intake air amount of an engine supported by a vehicle body frame by a control motor. In the sensor arrangement structure, an accelerator position sensor is connected to the throttle grip via a throttle cable, and the accelerator position sensor is arranged outside the main frame extending from the head pipe in the vehicle body frame to the rear of the vehicle body. And
According to the present invention, the accelerator position sensor is connected to the throttle grip via the throttle cable, and the accelerator position sensor is disposed outside the main frame extending from the head pipe in the vehicle body frame to the rear of the vehicle body. As compared with the case where the accelerator position sensor is arranged between the frames, the arrangement of the accelerator position sensor is facilitated, and an increase in the vehicle width can be suppressed without changing the operational feeling of the throttle.

  In this case, it is preferable that the main frame branches left and right from the head pipe and extends rearward of the vehicle body, and the accelerator position sensor is disposed outside the main frame on the left side of the vehicle body. According to this configuration, the throttle cable can be routed so as to draw a gentle arc without abrupt bending.

  Further, in this case, the throttle grip is provided on the right side of the handle, and a throttle cable extending from the throttle grip is routed along the outer side surface of the main frame on the left side of the vehicle body from the vicinity of the head pipe and connected to the accelerator position sensor. It is preferable to do. According to this structure, the throttle cable is operated in the same manner as in the case of the configuration in which the throttle cable extending from the conventional throttle grip is directly connected to the throttle valve, and in the same length as the throttle valve, so that the operation feeling of the throttle is improved. Can be almost the same.

  In this case, a horizontal radiator disposed outside the main frame on the left side of the vehicle body and a side cover that covers the side of the vehicle body including the horizontal radiator are provided, and the side cover is disposed above the horizontal radiator. It is preferable to have an external cover that covers and is exposed to the external appearance, and the accelerator position sensor is disposed between the external cover and the horizontal radiator. According to this configuration, the accelerator position sensor can be disposed by effectively using the space between the horizontal radiator and the outer cover, and adhesion of dust and the like can be avoided.

The present invention relates to an accelerator position sensor arrangement structure for a motorcycle in which an operation of a throttle grip is detected by an accelerator position sensor and a throttle valve for controlling an intake air amount of an engine supported by the vehicle body frame is driven by a control motor. The frame includes a pair of left and right main frames extending from the head pipe to the rear of the vehicle body, a pair of left and right down tubes extending from the head pipe to the vehicle body and supporting the engine, the rear of the main frame, and the lower portion of the down tube. A connecting member that connects the main frame, the down tube, and the connecting member, and an opening that opens to the side of the vehicle body is provided, and the throttle grip is connected to the throttle grip via a throttle cable. That the accelerator position sensor to be connected And butterflies.
According to the present invention, an accelerator position sensor is provided that is surrounded by the main frame, the down tube, and the connecting member and that is open to the side of the vehicle body and is connected to the throttle grip via the throttle cable. Therefore, as compared with the case where the accelerator position sensor is arranged between the main frames, an increase in the vehicle width can be suppressed without changing the operational feeling of the throttle.

  In this case, it is preferable that the main frame, the down tube, and the connecting member are integrally formed by casting. According to this configuration, as compared with the case where the main frame, the down tube, and the connecting member are manufactured separately, the work of joining them becomes unnecessary, and variation in the opening shape in which the accelerator position sensor is arranged is reduced. The

  In this case, it is preferable that the horizontal radiator disposed outside the main frame is disposed at a position overlapping the accelerator position sensor in a side view. According to this configuration, the accelerator position sensor can be arranged so as not to be noticeable in appearance.

In the present invention, an accelerator position sensor is connected to the throttle grip via a throttle cable, and this accelerator position sensor is disposed outside the main frame extending from the head pipe in the vehicle body frame to the rear of the vehicle body. Can be easily arranged, and the increase in the vehicle width can be suppressed without changing the operational feeling of the throttle.
Also, the main frame branches left and right from the head pipe and extends to the rear of the vehicle body, and the accelerator position sensor is placed outside the main frame on the left side of the vehicle body, so the throttle cable can be routed in a gentle arc. it can.
The throttle grip is provided on the right side of the handle, and the throttle cable extending from the throttle grip is routed from the vicinity of the head pipe along the outer side surface of the main frame on the left side of the vehicle body and connected to the accelerator position sensor. The operational feeling can be made almost the same as before.
It also has a horizontal radiator that is placed outside the main frame on the left side of the vehicle body, and a side cover that covers the side of the vehicle body including this horizontal radiator. The side cover covers the upper side of the horizontal radiator and is exposed to the outside. Since the accelerator position sensor is disposed between the exterior cover and the horizontal radiator, the accelerator position sensor should be disposed by effectively utilizing the space between the horizontal radiator and the external cover. In addition, adhesion of dust and the like can be avoided.

In addition, the present invention provides an accelerator position sensor that is surrounded by a main frame, a down tube, and a connecting member, and that has an opening that opens to the side of the vehicle body, and that is connected to a throttle grip via a throttle cable. As a result, the increase in vehicle width can be suppressed without changing the operating feeling of the throttle.
In addition, since the main frame, the down tube, and the connecting member are integrally formed by casting, the work of joining them becomes unnecessary and variation in the opening shape in which the accelerator position sensor is arranged is reduced.
In addition, since the horizontal radiator arranged outside the main frame is arranged at a position overlapping the accelerator position sensor in side view, it is possible to prevent the accelerator position from being exposed to the outside and improve the degree of freedom of arrangement of the horizontal radiator. .

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the description, descriptions of directions such as front and rear, left and right, and top and bottom are for the vehicle body.
<First Embodiment>
FIG. 1 shows a side view of a motorcycle according to an embodiment of the present invention, and FIG. 2 shows a top view of the motorcycle. FIG. 3 shows a front view of the motorcycle, and FIG. 4 shows a rear view of the motorcycle.
As shown in FIGS. 1 and 2, the motorcycle 10 includes a vehicle body frame 11, a pair of left and right front forks 13 rotatably supported by a head pipe 12 attached to a front end portion of the vehicle body frame 11, and A steering handle 15 attached to the top bridge 14 that supports the upper end of the front fork 13, a front wheel 16 that is rotatably supported by the front fork 13, an engine 17 that is supported by the vehicle body frame 11, and an engine 17 An exhaust muffler 18 connected to the vehicle through an exhaust pipe (not shown), a rear fork 20 supported by a pivot 19 at the rear lower part of the vehicle body frame 11 so as to swing up and down, and a rear end portion of the rear fork 20 And a rear cushion 21 (not shown) disposed between the rear fork 20 and the vehicle body frame 11. It is.

  The vehicle body frame 11 includes a pair of left and right main frames 24 that branch from the head pipe 12 to the left and right and extend obliquely downward rearward, a pair of left and right pivot plates 25 connected to the rear of the main frame 24, and a front portion of the pivot plate 25. And a pair of left and right seat rails 26 extending obliquely rearward and upward from the rear portion. The engine 17 is supported below the main frame 24, and the fuel tank 22 is supported above the main frame 24. An occupant seat 23 is attached to the upper portion of the seat rail 26, and a grab rail 30 and a trunk box 27 are attached to the rear portion of the seat rail 26.

  The occupant seat 23 extends rearward of the fuel tank 22 and has a front seat 23A on which the driver is seated, a rear seat 23B that is formed one step higher on the rear of the front seat 23A and on which the passenger sits, and a passenger seat The backrest part 23C is provided. Also, the pivot plate 25 of the vehicle body frame 11 has a pair of left and right steps (driver stepping steps) 28 for the driver sitting on the front seat 23A and a pair of left and right passengers sitting on the rear seat 23B. A step (passenger footrest step) 29 is attached, and a grab rail 30, a main stand 31, a sub stand 32, a vehicle body cowling 40 described below, and the like are attached to the vehicle body frame 11. Yes.

  The vehicle body cowling 40 includes a front fairing 41 covering the front of the vehicle body, a pair of left and right side covers 42 covering the side of the vehicle body, an under cover 43 covering the lower part of the vehicle body, and a rear seat cowl 44 covering the rear of the vehicle body. A pair of left and right saddlebacks 45 are integrally formed on the rear seat cowl 44. A front fender 46 that covers the front wheel 16 is attached to the front fork 13, and a rear fender 47 that covers the rear wheel 21 is attached to the rear seat cowl 44. The front fairing 41 and the pair of left and right side covers 42 may be integrally formed.

As shown in FIG. 3, a headlight 50 is provided on the front face of the front fairing 41. A wind screen (windshield) 51 is attached to the top of the head fairing 41. Each of the mirrors 53 is disposed, and a vehicle meter 55 is disposed inside the front fairing 41 as shown in FIG.
As shown in FIG. 3, the side cover 42 is provided with a pair of left and right air openings 42 </ b> A for supplying outside air from the front of the vehicle to the surroundings of the engine 17. The engine guard 56 is provided with a pair of left and right fog lamps 57.

Further, as shown in FIG. 2, a pair of left and right side upper covers (appearance cover) 42B that covers the space between the side cover 42 and the main frame 24 and is exposed to the exterior are attached to the side cover 42. The heat heated by the engine 17 by the upper cover 42B is blocked from flowing to the occupant side through the gap between the side cover 42 and the vehicle body frame 11 or the like. The side upper cover 42B also functions as a decorative cover that covers an upper portion of a radiator 67 (FIG. 5) described later.
As shown in FIG. 4, a pair of left and right tail lamp units 60 are disposed on the back of the trunk box 27, and rear turn signals 61 are disposed on the back of the saddle back 45. A rod antenna 58 used when an audio unit (not shown) built in the motorcycle 10 receives a radio broadcast is attached to the unit.

  FIG. 5 is a view showing the engine 17 together with the peripheral configuration, and FIG. 6 is a top view thereof. The engine 17 is a horizontally opposed six-cylinder engine having three cylinders arranged in the longitudinal direction of the vehicle body on both the left and right sides, and is supported by a main frame 24 and a pivot plate 25 as shown in FIG. An intake manifold 17A is connected above the engine 17, and an air cleaner (not shown) is connected via the throttle body 63 above the intake manifold 17A.

As shown in FIG. 6, the throttle body 63 has a pair of left and right intake passages 63 </ b> A. The intake passage 63 </ b> A is a butterfly type that controls the amount of intake air to the engine 17 by controlling the opening degree thereof. The throttle valve 63B is supported by extending the common valve shaft 63C in the vehicle body width direction.
An actuator 65 that houses a control motor 64 that rotationally drives the valve shaft 63C is disposed at one end of the valve shaft 63C (the end on the right side of the vehicle body). The actuator 65 and the throttle body 63 are a pair of left and right mains. It is disposed between the frames 24. The actuator 65 supports the control motor 64 with its rotation axis parallel to the valve shaft 63C, and constitutes an electric throttle mechanism that transmits the rotation of the control motor 64 to the valve shaft 63C via a reduction gear mechanism. Yes.

  The engine 17 is a water-cooled engine, and includes a radiator 67 that cools the cooling water of the engine 17. As shown in FIG. 5, the radiator 67 is a horizontally mounted radiator that is fixed horizontally on the outside of the front end portion of the left main frame 24, and a blower fan 67 </ b> A that forcibly passes air through the radiator 67 is integrated. Attached. In this configuration, an accelerator position sensor (hereinafter referred to as an AP sensor) that detects an operation of a throttle grip 15A (see FIG. 2) provided on the right side of the handle 15 at a position above the radiator 67 in the left main frame 24. ) 100 is provided.

Hereinafter, the AP sensor 100 will be described with reference to FIGS. 7 to 9. The AP sensor 100 is disposed outside the main frame 24 and above the radiator 67 via a bracket 101 having one end fixed to the main frame 24 on the left side of the vehicle body with screws 101A and 101B. Therefore, in a state where the vehicle body cowling 40 is mounted, the AP sensor 100 is accommodated in a space between the side upper cover 42B (FIG. 2) and the radiator 67 that covers between the side cover 42 and the main frame 24. .
7 and 8, the AP sensor 100 has a plate-like sensor support plate 102 fixed to the bracket 101 with screws 101A and 101B. The sensor support plate (sensor body) 102 includes The throttle drum 110 is rotatably attached. Two throttle cables 115 and 125 drawn from the throttle grip 15A are connected to the throttle drum 110, and one throttle cable 115 is pulled as the throttle grip 15A is rotated to the open side. The other throttle cable 125 functions as an opening-side throttle cable, and functions as a closing-side throttle cable that is pulled when the throttle grip 15A is turned to the closing side.

More specifically, as shown in FIG. 9, the throttle cables 115 and 125 are push-pull cables in which the inner cables 115B and 125B are movably inserted into the outer cables 115A and 125A.
The throttle cables 115 and 125 are routed from the throttle grip 15A toward the vicinity of the head pipe 12, and then routed along the outer side surface of the main frame 24 on the left side of the vehicle body as shown in FIG. The end portions of 115A and 125A are supported and fixed to the cable support plate portion 103 formed at the front end portion of the sensor support plate 102.

As shown in FIG. 9, the inner cable 115 </ b> B drawn from the outer cable 115 </ b> A of the opening-side throttle cable 115 is engaged with an engagement piece 115 </ b> C provided at one end of the inner cable 115 </ b> C while the throttle drum 110 is engaged. Wrapped around. The winding direction of the opening side throttle cable 115 is set to a direction in which the throttle drum is rotationally driven in the opening direction M indicated by an arrow in FIG.
The inner cable 125B drawn from the outer cable 125A of the closing throttle cable 125 is wound around the outer periphery of the throttle drum 110 while engaging the engagement piece 125C provided at one end thereof with the throttle drum 110, The winding direction is set to a direction in which the throttle drum 110 is rotationally driven in the closing direction N indicated by an arrow in FIG.

The throttle drum 110 has a rotating disk 111 around which throttle cables 115 and 125 are wound. The rotating disk 111 is pivotally supported around its shaft 111A and twisted. It is urged to rotate in the closing direction N by a return spring 112 which is a spring.
Therefore, when the throttle grip 15A is opened, the rotating disk 111 is rotated in the opening direction M against the urging force of the return spring 112, and when the throttle grip 15A is returned, it is rotated by the urging force of the return spring 112. The moving disk 111 rotates in the closing direction N.

The sensor support plate 102 is connected to a throttle operation amount sensor 130 on a surface (a surface outside the vehicle body) facing the throttle drum 110, and the throttle operation amount sensor 130 rotates the throttle drum 110. By detecting the rotation amount of the disc 111, the operation amount of the throttle grip 15A, that is, the throttle operation amount of the occupant is detected.
An electronic control unit (ECU) 200 for controlling each part of the motorcycle 10 is connected to the connector 130A of the throttle operation amount sensor 130 via a cable (not shown), and the throttle detected by the throttle operation amount sensor 130 is detected. The operation amount is notified to the electronic control device 200.

FIG. 10 is a block diagram showing a throttle control system. The electronic control device 200 is a device that centrally controls each part of the vehicle body. In the throttle control, the throttle valve is driven by driving the control motor 64 based on the throttle operation amount detected by the throttle operation amount sensor 130. 63B is driven to control the throttle opening.
The electronic control device 200 includes a throttle opening sensor 210 that detects the opening of the throttle valve 63B, a vehicle speed sensor 220 that detects the vehicle speed, an intake pressure sensor 230 that detects the intake pressure to the engine 17, and an intake air temperature. Output signals from the intake air temperature sensor 240 to be detected are input, and based on the detection results of these sensors, the throttle opening is appropriately corrected and controlled, and acceleration or deceleration according to the occupant's expectation is achieved by throttle operation. Is controlled to an appropriate throttle opening degree.

  As described above, in the motorcycle 10 of the present embodiment, the AP sensor 100 is disposed close to the outside of the main frame 24 on the left side of the vehicle body, so that the AP sensor 100 does not need to be disposed between the main frames 24. For this reason, as compared with the conventional configuration in which the AP sensor is arranged between the main frames 24, the assembly and removal of the AP sensor 100 is facilitated, and the interval between the main frames 24 can be narrowed. Can be suppressed. As described above, since the gap between the main frames 24 can be narrowed, it is possible to avoid a decrease in the occupant footing of the motorcycle 10 and to sufficiently secure the capacity of the radiator 67 arranged outside the main frame 24. Play.

In this configuration, since the throttle cables 115 and 125 extending from the throttle grip 15A on the right side of the handle 15 are routed along the outside of the main frame 24 on the left side of the vehicle body, the throttle cables 115 and 125 are gently bent without being suddenly bent. It can be drawn to draw a simple arc. In addition, this routing has substantially the same trajectory as that in the case of the configuration of the throttle manual operation in which the throttle cable extending from the conventional throttle grip is directly connected to the throttle valve, and can have the same routing length.
That is, in the case of the configuration of the throttle manual operation, the throttle cable extending from the throttle grip is routed to the throttle body 63 under the main frame 24 after being routed to the vicinity of the head pipe 12, In this configuration, the routing that passes under the main frame 24 from the vicinity of the conventional head pipe 12 is changed to a routing substantially in the horizontal direction. Therefore, the operating feeling of the throttle can be made almost the same as the conventional one, and even if the AP sensor 100 is arranged, it is possible to suppress an increase in the vehicle width without changing the operating feeling of the throttle.

  Further, in this configuration, the AP sensor 100 is disposed in an existing empty space existing between the side upper cover 42B (FIG. 2) that covers between the side cover 42 and the main frame 24 and the horizontal radiator 67. Therefore, it is not necessary to newly provide an arrangement space for the AP sensor 100, and adhesion of dust or the like can be avoided. Further, in the case of this configuration, a maintenance worker (owner, etc.) can be obtained by removing the side upper cover 42B, or providing an opening / closing lid above the AP sensor 100 in the side upper cover 42B and removing the opening / closing lid. Can easily access the AP sensor 100, and operations such as grease injection and parts replacement can be easily performed.

Second Embodiment
FIG. 11 is a view of the AP sensor 100 according to the second embodiment as viewed from the side of the body frame 11. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 11, the vehicle body frame 11 includes a pair of left and right main frames 24 that branch left and right from the head pipe 12 and extend obliquely downward to the rear, and a pair of left and right bodies that extend downward from the head pipe 12 and support the engine 17. Down tube 71, and a pair of left and right connecting members (tension pipes) 72 that connect the rear of the main frame 24 and the lower portion of the down tube 71, the main frame 24, the down tube 71, and the connecting member 72 are It is integrally formed by casting. In FIG. 11, reference numeral 85 denotes an air cleaner disposed between the main frames 24.

  In the main frame 24, a main frame front end portion 24A located on the front side of the joint portion with the connecting member 72 is formed to be narrower than the main frame intermediate portion 24B in a side view, and the upper surface thereof is smooth on the upper surface of the main frame intermediate portion 24B. And the head pipe 12 is connected to the main frame middle portion 24B with a downward and downward slope so that the connecting member 72 extends downward and upward from the down tube 71 below the main frame front end portion 24A. It is connected to the intermediate part 24B. As described above, the main frame front end portion 24A, the connecting member 72, and the down tube 71 are combined in a substantially triangular shape, whereby the frame rigidity of the front portion of the vehicle body frame 11 is improved and the front portion side of the vehicle body frame 11 is substantially formed laterally. A pair of left and right openings 81 having a triangular shape is formed.

  In this configuration, an AP sensor 100 that detects the operation of the throttle grip 15A (FIG. 2) provided on the right side of the handle 15 is disposed in the opening 81 that opens to the left side of the front portion of the vehicle body frame 11. More precisely, boss portions 82 and 83 projecting upward from the connecting member 72 are integrally formed in the opening portion 81 with a space in the front and rear directions, and the AP sensor 100 is formed inside the boss portions 82 and 83. The AP sensor 100 is fixed to the boss portions 82 and 83 by bolts 85 and 86 passed from outside the boss portions 82 and 83 (outside the vehicle body width direction).

  12 is a view of the AP sensor 100 as seen from the back side of the vehicle body frame 11, FIG. 13 is a view of the AP sensor 100 as seen from above the vehicle body frame 11, and FIG. 14 is a view of the AP sensor 100 as seen from the front side of the vehicle body. FIG. 15 is a view of the AP sensor 100 as viewed obliquely from above. As shown in FIGS. 12 and 13, the AP sensor 100 is almost entirely accommodated in the opening 81 except for the connector 130 </ b> A.

More specifically, as shown in FIGS. 11 and 12, the AP sensor 100 includes a sensor main body 150 connected to the boss portions 82 and 83, and two throttle cables 115 and 125 drawn from the throttle grip 15A. Cable support plate portion 160 supporting outer cables 115A and 125A, and the cable support plate portion 160 is provided on the front side of the sensor body 150, so that the AP sensor 100 is substantially contained within the width of the main frame 24 and is long in the longitudinal direction. Is formed in a shape that fits within the longitudinal length of the opening 81.
The cable support plate portion 160 includes cable connecting portions 160A and 160B (FIG. 11) that extend in the vertical direction with a space therebetween. As shown in FIG. 13, in the vicinity of the cable connecting portions 160A and 160B, the main frame 24 bends toward the head pipe 12 when viewed from above, so that the throttle drawn from the head pipe 12 along the left main frame 24. The cables 115 and 125 (outer cables 115 </ b> A and 125 </ b> A) can be routed without causing a sharp bend and with little contact with the main frame 24.

As shown in FIG. 11, a throttle drum 110 to which throttle cables 115 and 125 are connected is rotatably supported on the outside of the vehicle body of the sensor main body 150. More specifically, the throttle drum 110 is engaged with an engagement piece 115C provided at one end of the inner cable 115B of the throttle cable 115, which is an open side throttle cable, wound from above. The inner cable 125B of the throttle cable 125, which is a closing side throttle cable, is wound from below and the engaging piece 125C provided at one end thereof is engaged. The throttle drum 110 is urged to rotate toward the closing side of the throttle grip 15A (clockwise in FIG. 11) by a return spring 112 (not shown).
Therefore, when the throttle grip 15A is opened, the throttle drum 110 rotates against the urging force of the return spring 112 (in the counterclockwise direction in FIG. 11), and when the throttle grip 15A is returned, the return spring Due to the urging force 112, the throttle drum 110 rotates to the closing side.

As shown in FIG. 12, a throttle operation amount sensor 130 for detecting the rotation amount of the throttle drum 110 is provided inside the vehicle body of the sensor main body 150.
As shown in FIGS. 12 and 13, the connector 130 </ b> A of the throttle operation amount sensor 130 protrudes inward of the vehicle body from the opening 81 and is directed downward of the vehicle body, and is an electronic control device that controls each part of the motorcycle 10. A cable routed from (ECU) 200 (not shown) is connected from below. The throttle operation amount detected by the throttle operation amount sensor 130 is notified to the electronic control device 200, and the throttle opening is controlled by the motor drive by the electronic control device 200.

Further, in the present embodiment, as shown in FIG. 13, a horizontal radiator 67 is disposed outside the front end portion of the main frame 24. In this arrangement layout, as shown in FIG. 16, the horizontal radiator 67 is arranged at a position overlapping the AP sensor 100 arranged in the opening 81 in the front part of the vehicle body frame 11 in a side view. The AP sensor 100 cannot be seen from the outside, and the AP sensor 100 can be arranged so as not to be noticeable in appearance.
A radiator cover 67B is disposed inside the radiator 67 on the vehicle body, and a radiator grill 67G is disposed outside the radiator 67 on the vehicle body. The radiator cover 67B functions as a cooling air guide box, and is integrally provided with an opening 67C (FIGS. 14 and 15) which is recessed toward the inside of the vehicle body to the vicinity of the main frame 24 and provided with a lattice grill on the front side of the cover. It is formed by molding. As a result, traveling wind from the front of the vehicle body can be taken into the cover 67B from the opening 67C and passed through the radiator 67. Further, when the blower fan 67A (FIG. 5) of the radiator 67 rotates when the vehicle stops, the air that has passed through the radiator 67 is blown out forward of the vehicle body through the opening 67C.
Further, a concave portion 67D that is recessed along the throttle cables 115 and 125 is formed on the wall inside the vehicle body of the radiator cover 67B, and interference between the radiator cover 67B and the throttle cables 115 and 125 is avoided by the concave portion 67D. Is done.

As described above, in the motorcycle 10 of the present embodiment, the AP sensor 100 is disposed in the opening 81 that is surrounded by the main frame 24, the down tube 71, and the connecting member 72 and opens to the side of the vehicle body. Compared to the conventional one in which the AP sensor is arranged between the main frames 24, the interval between the main frames 24 can be narrowed, the increase in the vehicle width can be suppressed, and the AP sensor is arranged outside the main frame 24. The situation where the arrangement of the horizontal radiator 67 is restricted by the AP sensor 100 is also avoided.
In addition, since the throttle cables 115 and 125 extending from the throttle grip 15A on the right side of the handle 15 are routed along the outside of the main frame 24 on the left side of the vehicle body and connected to the AP sensor 100, the throttle cables 115 and 125 are bent sharply. It can be routed to draw a gentle arc, and it can be routed in the same way as in the case of the manual throttle operation configuration in which the throttle cable extending from the conventional throttle grip is directly connected to the throttle valve, and the operation feeling of the throttle is equivalent Can be. Therefore, even if the AP sensor 100 is arranged, it is possible to suppress an increase in the vehicle width without changing the operational feeling of the throttle.

Further, in this configuration, since the AP sensor 100 is disposed in the existing opening 81 formed as a result from the viewpoint of improving the rigidity of the vehicle body frame 11, it is not necessary to newly provide a space for arranging the AP sensor 100. For this reason, the existing empty space can be effectively used, and the space utilization efficiency is improved.
Further, since the horizontal radiator 67 disposed outside the main frame 24 is disposed at a position overlapping the AP sensor 100 in a side view, the AP sensor 100 can be disposed so as to be inconspicuous in appearance.
Further, since the main frame 24, the down tube 71, the connecting member 72 and the molding are integrally formed, the joining work is not required as compared with the case where these are manufactured separately, and the opening 81 Variations in shape are reduced, and a situation in which the opening 81 is modified when the AP sensor 100 is disposed in the opening 81 can be avoided.
Further, since the AP sensor 100 only needs to be attached with two bolts 85 and 86 from the outside of the vehicle body, the AP sensor 100 can be easily attached and detached.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this, A various design deformation | transformation can be performed. For example, in the above-described embodiment, the case where the present invention is applied to the accelerator position sensor arrangement structure of the motorcycle 10 as described above has been described. However, the present invention is not limited to this, and the accelerator position of an arbitrary motorcycle such as a scooter-type vehicle is described. It can be widely applied to the sensor arrangement structure.

1 is a side view of a motorcycle according to an embodiment. 1 is a top view of a motorcycle. 1 is a front view of a motorcycle. 1 is a rear view of a motorcycle. It is a side view which shows an engine with a periphery structure. It is a top view which shows an engine with a periphery structure. It is a perspective view which shows AP sensor with a periphery structure. It is a perspective view which shows AP sensor with a periphery structure. It is a side view of an AP sensor. It is a block diagram which shows a throttle control system. It is the figure which looked at the AP sensor which concerns on 2nd Embodiment from the vehicle body frame side. It is the figure which looked at the AP sensor from the body frame back side. It is the figure which looked at AP sensor from the body frame upper part. It is the figure which looked at the AP sensor from the vehicle body front side. It is the figure which looked at AP sensor from diagonally upward. It is a side view which shows AP sensor with a periphery structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Motorcycle 11 Body frame 12 Head pipe 15A Throttle grip 17 Engine 24 Main frame 25 Pivot plate 26 Seat rail 40 Car body cowling 41 Front fairing 42 Side cover 42B Side upper cover (exterior cover)
43 Under cover 44 Rear seat cowl 63 Throttle body 63A Intake passage 63B Throttle valve 63C Valve shaft 64 Control motor 65 Actuator (electric throttle mechanism)
67 Radiator (Horizontal radiator)
67B Radiator cover 67G Radiator grill 67D Recessed portion 71 Down tube 72 Connecting member 81 Opening portion 82, 83 Boss portion 100 Acceleration position sensor (AP sensor)
DESCRIPTION OF SYMBOLS 101 Bracket 102 Sensor support plate 103,160 Cable support plate part 110 Throttle drum 112 Return spring 115,125 Throttle cable 130 Throttle operation amount sensor 150 Sensor main body 160 Cable 200 Electronic control unit (ECU)

Claims (7)

In an accelerator position sensor arrangement structure for a motorcycle that detects an operation of the throttle grip with an accelerator position sensor and drives a throttle valve that controls an intake air amount of an engine supported by a vehicle body frame with a control motor.
An accelerator position sensor is connected to the throttle grip via a throttle cable, and the accelerator position sensor is disposed outside the main frame extending from the head pipe in the body frame to the rear of the vehicle body. Accelerator position sensor arrangement structure. The main frame branches left and right from the head pipe and extends to the rear of the vehicle body.
The accelerator position sensor arrangement structure for a motorcycle according to claim 1, wherein the accelerator position sensor is arranged outside the main frame on the left side of the vehicle body.   The throttle grip is provided on the right side of the handle, and a throttle cable extending from the throttle grip is routed along the outer side surface of the main frame on the left side of the vehicle body from the vicinity of the head pipe and connected to the accelerator position sensor. The accelerator position sensor arrangement structure for a motorcycle according to claim 2.   A horizontal radiator disposed outside the main frame on the left side of the vehicle body, and a side cover that covers the side of the vehicle body including the horizontal radiator, the side cover covering the upper side of the horizontal radiator in appearance 4. The accelerator position sensor arrangement structure for a motorcycle according to claim 2, further comprising an exposed outer cover, wherein the accelerator position sensor is disposed between the outer cover and the horizontal radiator. 5. In an accelerator position sensor arrangement structure for a motorcycle that detects an operation of the throttle grip with an accelerator position sensor and drives a throttle valve that controls an intake air amount of an engine supported by a vehicle body frame with a control motor.
The vehicle body frame includes a pair of left and right main frames extending from the head pipe to the rear of the vehicle body, a pair of left and right down tubes extending downward from the head pipe to support the engine, the rear of the main frame, and the down tube A connecting member for connecting the lower part of
An opening that is surrounded by the main frame, the down tube, and the connecting member and that opens to the side of the vehicle body is provided, and an accelerator position sensor that is connected to the throttle grip via a throttle cable is disposed in the opening. Accelerator position sensor arrangement structure for motorcycles characterized by the above.   The accelerator position sensor arrangement structure for a motorcycle according to claim 5, wherein the main frame, the down tube, and the connecting member are integrally formed by casting.   The accelerator position sensor arrangement structure for a motorcycle according to claim 5 or 6, wherein a horizontal radiator arranged on the outside of the main frame is arranged at a position overlapping the accelerator position sensor in a side view.

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