JP2010195254A - Electric component mounting structure of motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric component mounting structure of a motorcycle capable of preventing influences of an engine, improving durability, shortening a wiring cable and improving an anti-noise performance by arranging an electric component with low durability to vibrations or heat at a position separated from an engine which is a vibration or heat generating source, and in front of a vehicle body from the engine. <P>SOLUTION: In this electric component mounting structure, a vehicle body rear end is fixed to a head pipe 2. A cowling stay 18 supporting a front cowling (front base cowl 16) at a vehicle body front end has an electric component mounting part with an almost box-shaped cross section. Electric components 37, 38, 41, 42 are mounted to the electric component mounting part on inside, right and left outer walls, and a wiring connector to the electric component including an engine and a power source battery is arranged in front of the electric component mounting part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric component mounting structure for a motorcycle.

  Conventionally, the vehicle engine is mounted on the frame body part near the center of the vehicle body behind the head pipe and the electrical components are arranged below the driver seat behind the vehicle body near the center of the vehicle body where the engine is mounted. It is arranged in a space that is covered with a body cover and closed from the outside.

  In recent motorcycle engines, an intake passage for sending an air-fuel mixture to the combustion chamber is linearly formed, and an air-fuel mixture with an accurate mixture ratio is obtained by an electronic fuel injection device disposed above the cylinder head. ing.

  This electronic fuel injection device is controlled by an electronic control unit (ECU) disposed below the driver's seat (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 10-218057 JP 2001-071961 A

  However, in the arrangement structure of the electric parts configured as described above, the electric parts are arranged below the driver seat at the rear of the vehicle body and near the center of the vehicle body on which the engine is mounted. In the lower space, air heated by radiant heat from the engine, which is the source of vibration and heat, is difficult to escape to the outside, and it is in a high temperature environment, which may adversely affect the durability of heat-sensitive electrical components. It was.

  In addition, since the electronic fuel injection device is controlled by an engine electronic control unit (ECU) disposed below the driver seat, the electronic fuel injection device disposed above the cylinder head and the ECU disposed below the driver seat; It is necessary to secure a long wiring cable for connecting the two, and there is a risk of receiving a noise signal unrelated to the control signal and causing a malfunction.

  Therefore, in consideration of the above circumstances, the present invention arranges an electrical component having low durability against vibration and heat at a position away from the engine that is a generation source of vibration and heat and in front of the engine. To provide an electrical component mounting structure for a motorcycle that not only contributes to the improvement of reliability but also contributes to the shortening of wiring cables and the improvement of noise resistance performance. With the goal.

  The electric component mounting structure for a motorcycle according to the present invention includes a head pipe disposed at the front of the vehicle body and constituting a part of the vehicle body frame, and is fixed to the head pipe so as to protrude from the front of the vehicle body toward the front of the vehicle body. A motorcycle cowling stay and a front cowling that is supported by the cowling stay and covers the front of the vehicle body from both front to both sides. A box-shaped electrical component mounting portion having an end portion detachably attached to the head pipe and supporting the front cowling at the front end portion of the vehicle body is provided. An electrical component is mounted on the wall, and a wiring connector for the electrical component is disposed in front of the electrical component.

  According to the electric component mounting structure for a motorcycle of the present invention, by disposing an electric component having low durability against vibration and heat at a position away from the engine which is a generation source of vibration and heat and ahead of the engine. In addition to being less susceptible to the influence of the engine, not only can the durability be improved, but also the wiring cable can be shortened and the noise resistance can be improved.

  In the electrical component mounting structure according to claim 2, the electrical component mounted on the electrical component mounting portion is covered by the front cowling, and the front cowling is opposed to the wiring connection connector of the electrical component. The front upper part of the front head is divided so as to be detachable.

  According to the electrical component mounting structure of the second aspect, the electrical component can be easily maintained by removing the front front upper portion of the front cowling. Also, when assembling the vehicle body, the wiring connection connector of the electrical component is exposed to the outside by removing the front front upper part of the front cowling even after the cowling stay is attached to the head pipe and the front cowling is attached to the cowling stay. Therefore, the wiring cable can be easily routed. Furthermore, for example, when the motorcycle is a competition vehicle, an environment for quickly and quickly rewriting the control map data stored in the engine electronic control unit according to the driving conditions and the rider's preference. It can contribute to the improvement of versatility, such as being able to respond downward.

  Furthermore, in the electrical component mounting structure according to claim 3, the cowling stay includes a meter mounting portion for mounting meter instruments by standing upward from the electrical component mounting portion, and an upper portion of the instrument mounting portion. A GPS antenna is attached.

  According to the electrical component mounting structure of the third aspect, the GPS antenna can be disposed at a relatively low obstacle portion at the top of the vehicle body, and GPS radio waves from GPS satellites can be received efficiently.

  The electric component mounting structure for a motorcycle according to the present invention is configured such that an electric component having low durability against vibration and heat is disposed at a position away from the engine which is a generation source of vibration and heat and in front of the vehicle body than the engine. In addition to being able to contribute to improving durability, it is also possible to contribute to shortening the wiring cable and improving noise resistance.

1 is a side view of a motorcycle adopting an electric component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a front perspective view of a cowling stay showing an electric component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a rear perspective view of a cowling stay showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a perspective view of an ECU lower cover showing an electric component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a perspective view of an ECU upper cover showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a perspective view of a sensor upper cover showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a perspective view of an ECU front cover showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a perspective view of a cowl brace showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a front right perspective view of a main part showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a front left perspective view of a main part showing an electric component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a front view of a main part showing an electrical component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a rear left perspective view of a main part showing an electric component mounting structure for a motorcycle according to an embodiment of the present invention. 1 is a rear left perspective view of a main part in a front base cowl mounting state showing an electric component mounting structure for a motorcycle according to an embodiment of the present invention.

  Next, an electrical component mounting structure for a motorcycle according to an embodiment of the present invention will be described with reference to the drawings. The embodiments shown below are preferred specific examples of the electric component mounting structure for a motorcycle according to the present invention, and may have various technically preferable limitations. Unless specifically described to limit the present invention, it is not limited to these embodiments.

  FIG. 1 is a side view of a motorcycle adopting an electric component mounting structure for a motorcycle according to an embodiment of the present invention.

  As shown in FIG. 1, a motorcycle 1 according to an embodiment of the present invention includes a pair of left and right main frames 3 extending from a head pipe 2 disposed at the front of the vehicle body to the left and right of the vehicle body, and a main frame 3. A seat 4 fixed to a seat frame (not shown) extending upward from the middle of the vehicle from the middle, an engine 5 mounted on the main frame 3 adjacent to the front of the vehicle body of the seat 4, and the head pipe 2 A front fork 7 that pivotally supports the front wheel 6, a rear swing arm 10 that is pivotally connected to the main frame 3 via a pivot 8 and supports the rear wheel 9, and is disposed in front of the seat 4. The fuel tank 11, the exhaust muffler 12 of the engine 5, the front cowling 13 disposed at the front upper part of the vehicle body, and the side cover that covers the engine 5 connected to the front cowling 13. Is provided with a ring 14, a.

  The front cowling 13 covers the front of the vehicle body from the front to both sides, and includes a front base cowl 16 that supports one end (tip) of the intake duct 15 for taking in the cooling air of the engine 5 and mainly the front of the vehicle body. A front screen 17 made of a transparent resin that covers the vicinity of the upper portion and is detachably supported by the front base cowl 16. The other end (rear end) of the intake duct 15 is supported by the main frame 3.

  As shown in FIG. 2, a cowling stay 18 is fixed to the head pipe 2 so as to protrude from the front of the vehicle body toward the front of the vehicle body.

  As shown in FIGS. 2 to 8, the cowling stay 18 includes an ECU lower cover 20 fixed to a main bracket 19 for fixing to the head pipe 2 (see FIG. 4), and an ECU upper fixed to the ECU lower cover 20. A cover 21 (see FIG. 5), a sensor lower cover 22 fixed on the upper surface of the ECU upper cover 21, and a sensor upper cover 23 fixed on the upper surface of the ECU upper cover 21 so as to face the sensor lower cover 22 (see FIG. 5). 6), an ECU front cover 24 fixed on the front side of the vehicle body of the ECU upper cover 21 (see FIG. 7), and a cowl brace 25 made of a frame structure fixed to the lower edge portion of the ECU front cover 24 (see FIG. 7). 8).

  The main bracket 19 is made of a metal such as iron or aluminum, and as shown in FIG. 3, a bracket base 19a having a substantially L-shaped cross section and a bolt projecting from the bracket base 19a toward the rear of the vehicle body to the head pipe 2 And a pair of stay mounting flanges 19b that are fixed via a fixing member (not shown).

  As shown in FIG. 4, the ECU lower cover 20 includes a substantially box-shaped lower base 26 that opens upward from the vehicle body, and left and right lower brackets 27 and 28 that are attached to the left and right outer wall surfaces of the vehicle body of the lower base 26. Further, a vehicle body downward cover mounting surface 26a for mounting the ECU front cover 24 is formed on the vehicle body front side of the lower base 26, and left and right mounting tongues 27a and 28a projecting upward of the vehicle body are formed on the left and right lower brackets 27 and 28, respectively. Is formed.

  As shown in FIG. 5, the ECU upper cover 21 includes a substantially box-shaped upper base 29 that opens downward, and a meter instrument mounting panel 30 that stands upright from the front edge of the upper base 29 toward the front of the vehicle body. And a visor 31 that covers the vicinity of the upper edge portion of the meter instrument mounting panel 30. Further, the upper base 29 protrudes toward the rear of the vehicle body, covers a mounting portion 29a for fixing the upper base 29 between the upper portions of the stay mounting flange 19b, and protrudes upward from the vehicle body to the sensor lower cover 22. And a pair of left and right pedestal portions 29b for fixing the sensor upper cover 23 that holds the sensor. Further, the meter instrument mounting panel 30 is formed with a flat portion 30 a for fixing the ECU front cover 24.

  The sensor lower cover 22 is formed with cover mounting flanges 22a to which the entire ECU upper cover 21 is fixed to left and right mounting tongues 27a and 28a that are formed to protrude from the left and right lower brackets 27 and 28 upward.

  As shown in FIG. 6, the sensor upper cover 23 has a box shape that opens downward in the vehicle body, and an opening 23 a is formed on the bottom surface (upper surface) thereof. The sensor upper cover 23 is formed with a pair of left and right pedestal fixing tongues 23b for fixing the sensor upper cover 23 to the pedestal portion 29b.

  As shown in FIG. 7, the ECU front cover 24 includes a pair of cable insertion openings 24a for opening a storage space formed by the ECU lower cover 20 and the ECU upper cover 21 in a state where the cowling stay 18 is assembled. A pair of cowl brace fixing flanges 24b that protrude and are fixed to the cover mounting surface 26a and a hook-shaped fixing portion 24c that is fixed to the flat surface portion 30a are integrally formed.

  As shown in FIG. 8, the cowl brace 25 includes a brace base 32 that is fixed to the cover mounting surface 26a and the cowl brace fixing flange 24b, a base shaft 33 that protrudes obliquely downward from the brace base 32 toward the front of the vehicle body, A cowling support shaft 34 projecting obliquely upward from the vehicle body forward from the shaft 33, a reinforcing shaft 35 straddling the base shaft 33 and the cowling support shaft 34, and a substantially U-shaped electrical component support bracket fixed to the base shaft 33 in a side view 36.

  In the cowling stay 18 in a state where these are assembled, as shown in FIGS. 9 to 13, electrical control of the engine 5 is comprehensively performed between the ECU lower cover 20 and the ECU upper cover 21. The engine electronic control unit 37 (ECU) is held in the left lower bracket 27, and the combustion air-fuel ratio in the engine 5 is detected from the rich region to the lean region from the oxygen concentration and unburned gas concentration in the vehicle exhaust gas. Then, an A / F sensor controller 38 that controls to an optimal combustion state in accordance with the driving condition by feeding back to the engine electronic control unit 37 is held, and measurement results from various sensors etc. are stored in the right lower bracket 28. A data logger 39 is held, and various instruments such as a speedometer and an engine speed are mounted on the meter instrument mounting panel 30. 40, the exhaust temperature sensor unit 41 and the vehicle speed sensor amplifier 42 are held adjacent to each other between the sensor lower cover 22 and the sensor upper cover 23, and the GPS antenna 43 is attached to the upper surface of the visor 31 to support the cowling. A GPS positioning device main body 44 is held in the vicinity of the connecting portion between the shaft 34 and the reinforcing shaft 35, and a fuel cut is detected to detect the vehicle overturning in order to stop the fuel supply to the engine 5 when the vehicle falls over the electrical component support bracket 36. The sensor 45 is held, and a relay box 46 is disposed on the side of the ECU upper cover 21.

  Further, a shroud 47 for a radiator (not shown) is held at the lower end 33 a of the base shaft 33, and the front base cowl 16 is held at the front end 34 a of the cowling support shaft 34. The lower end 33a of the base shaft 33 and the front end 34a of the cowling support shaft 34 are provided with a nut integrally provided with an elastic body such as rubber, an engaging convex portion that engages with the inner surface of the front cowling.

  Furthermore, as shown in FIG. 13, the wiring cable 48 for electrically connecting the various electrical components 37 to 46 described above can be obtained by simply removing the front main cowl, and connecting the wiring connection connector connection port (in the illustrated example, both are wired). Wiring connection work can be easily performed by arranging the wiring connection connector 49 having a waterproof function of the cable 48 to be exposed in a liquid-tight manner.

  By the way, the main bracket 19, the ECU lower cover 20, the ECU upper cover 21, the sensor lower cover 22, the sensor upper cover 23, the ECU front cover 24, and the cowl brace 25 that constitute the cowling stay 18 described above, It is fixed by a fixing member such as a push rivet. In addition, in each figure of FIG. 4 thru | or FIG. 8, although these fixed positions are shown with the symbol of + character, since members other than the main bracket 19 may be resin or metal, welding fixation is carried out. It doesn't mean.

  Thus, according to the electric component mounting structure for a motorcycle according to the present invention, space saving can be ensured by integrating the cowl brace 25 with the cowling stay 18.

  In addition, the layout is such that the intake duct 15 is routed from the side (left and right) of the head pipe 2, and the cowling stay 18 that fixes the electrical components 37 to 46 and the front cowling 13 is fixed to the head pipe 2. Simplification of the vehicle body fixing work of ~ 46 can be realized.

  Further, by unifying the direction of the wiring connection connectors of the electrical components 37 to 46 toward the front side of the vehicle body, the workability at the time of assembling the vehicle body or during maintenance can be improved.

  Moreover, by installing a set of main electrical components 37 to 46 on the front side of the vehicle body of the head pipe 2, the electrical components 37 to 46 having poor heat resistance can be easily protected from engine radiant heat, and the main components By intensively arranging a set of various electrical components 37 to 46, it is possible to contribute to shortening and weight reduction of the wiring cable 48.

DESCRIPTION OF SYMBOLS 1 ... Motorcycle 2 ... Head pipe 3 ... Main frame 4 ... Seat 5 ... Engine 6 ... Front wheel 7 ... Front fork 8 ... Pivot 9 ... Rear wheel 10 ... Rear swing arm 11 ... Fuel tank 12 ... Exhaust muffler 13 ... Front cowling 14 ... Side cowling 15 ... Intake duct 16 ... Front base cowl 17 ... Front screen 18 ... Cowling stay (electric parts mounting part)
DESCRIPTION OF SYMBOLS 19 ... Main bracket 20 ... ECU lower cover 21 ... ECU upper cover 22 ... Sensor lower cover 23 ... Sensor upper cover 24 ... ECU front cover 25 ... Cowl brace 37 ... Engine electronic control unit (electric component)
38 ... A / F sensor controller (electric parts)
39 ... Data logger (electrical parts)
40 ... Instruments (electric parts)
41. Exhaust temperature sensor unit (electric parts)
42 ... Vehicle speed sensor amplifier (electric parts)
43 ... GPS antenna (electric parts)
44 ... GPS positioning device body (electric parts)
45 ... Fuel cut sensor (electrical parts)
46 ... Relay box (electrical parts)
47 ... shroud 48 ... wiring cable 49 ... wiring connector

Claims (3)

A head pipe arranged at the front of the vehicle body and constituting a part of the vehicle body frame, a cowling stay fixed to the head pipe so as to protrude from the front of the vehicle body toward the front of the vehicle body, and supported by the cowling stay A front cowling that covers the front of the vehicle body from the front across both sides, and an electrical component mounting structure for a motorcycle,
The cowling stay includes a substantially box-shaped electrical component mounting portion that has a vehicle body rear end detachably attached to the head pipe and supports the front cowling at the vehicle body front end.
An electrical component mounting structure for a motorcycle, wherein electrical component parts are mounted on the interior and left and right outer walls of the electrical component mounting part, and a wiring connection connector for the electrical component is disposed in front of the electrical component mounting part.   The electrical component mounted on the electrical component mounting portion is covered with the front cowling, and the front cowling is divided in such a manner that the front upper front portion facing the wiring connection connector of the electrical component is detachable. The electric component mounting structure for a motorcycle according to claim 1.   The cowling stay is provided with an instrument mounting portion that stands upward from the electrical component mounting portion to mount meter instruments, and a GPS antenna is mounted on an upper portion of the instrument mounting portion. The electric component mounting structure for a motorcycle according to claim 1 or 2.

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