JP5758574B2 - Motorcycle - Google Patents

Description

  The present invention relates to a motorcycle including an engine, an air cleaner (including an air cleaner box) that purifies air supplied to the engine, and a control unit that controls the engine.

  An engine mounted on a motorcycle includes a cylinder head, a cylinder block, a crankcase, and the like, and an outlet port of a throttle device is connected to an intake port of a combustion chamber provided in the cylinder head. An air cleaner exhaust port is connected to the inlet. The throttle device is provided with an injector for injecting fuel, and a control unit is electrically connected to the injector.

  In such a motorcycle, the operation of the engine (for example, the fuel injection amount and the injection time of the injector) is finely controlled by the control unit from the viewpoint of improving the fuel efficiency and the like. Since electronic parts (CPU, ROM, RAM, etc.) are accommodated, it is not desirable that the control unit be heated.

  Therefore, various techniques for suppressing the temperature rise of the control unit have been developed conventionally. For example, in Patent Document 1, the air cleaner (83) constituting the intake passage (E) is controlled by the control unit (91). A technique for effectively cooling the control unit (91) by attaching the control unit is disclosed. The numbers in parentheses indicate the reference numbers described in Patent Document 1 (the same applies hereinafter).

JP 2006-123656 A (refer to paragraph [0054] in particular)

  In the conventional technique described in Patent Document 1, the control unit (91) is attached to the upper mounting seat surface (83c) of the air cleaner (83), and the fuel tank (13) is provided above the control seat (83). The position of the fuel tank (13) is increased by the height of the unit (91), making it difficult to freely take the riding posture during traveling.

  The present invention has been made to solve the above problems, and provides a motorcycle capable of effectively cooling a control unit without impairing the degree of freedom of the riding posture during traveling or the like. Objective.

In order to solve the above-described problems, a motorcycle according to the present invention includes an engine, an air cleaner box that is disposed above the engine, and a filter that purifies the air. is disposed an air cleaner, above the air cleaner box with bets, a fuel tank containing the fuel supplied to the engine, and a control unit for controlling the engine, the air cleaner, the car as it travels rearward It has a size in the width direction, and has an intake port formed in the front portion and an exhaust port through which air taken into the flow path from the intake port is guided, and the control unit is provided with the air cleaner box. It is provided on any side surface in the vehicle left-right direction on the front side.

  In this configuration, since the control unit is provided on the side surface of the air cleaner box, it is possible to reduce the gap between the air cleaner box and the fuel tank disposed above the air cleaner box and to keep the height of the fuel tank low. It is possible to improve the degree of freedom of the riding posture when traveling. Further, since air flows inside the air cleaner box, the heat around the control unit can be efficiently dissipated using the air as a medium.

  The air cleaner box may be integrally formed with a control unit housing portion that houses the control unit.

  In this configuration, since the control unit housing portion is integrally formed on the side surface of the air cleaner box, it is possible to efficiently transfer heat between the inner surface of the air cleaner box and the inner surface of the control unit housing portion, The heat around the control unit can be more efficiently dissipated using air flowing inside the air cleaner box as a medium.

  A wire harness is led from the control unit toward the lower side of the air cleaner box, and the wire harness may include an electric wire that connects the control unit and the engine.

  Since the wire harness is a bundle of a plurality of electric wires (electric wire bundle), it is difficult to bend it freely, and there is a limit to the curvature when performing curved wiring. Therefore, when the control unit is arranged on the upper surface of the air cleaner box (Patent Document 1), if the wire harness is led from the control unit to the lower side of the air cleaner box, design freedom is avoided to avoid excessive wiring. Significantly damaged. In this regard, in the above configuration, since the control unit is provided on the side surface of the air cleaner box, the wire harness can be smoothly guided downward of the air cleaner box.

  The control unit may have a unit main body including various electronic components, and the unit main body may be accommodated in a vibration isolation case.

  In this configuration, the vibration transmitted to the unit body can be absorbed by the vibration-proof case, so that the electronic components of the unit body can be protected from vibration.

  At least one of the outer surface of the vibration isolation case and the inner surface of the control unit housing portion may be formed with a protrusion that abuts against the other.

  In this configuration, since the protrusion is located in the gap between the outer surface of the vibration isolating case and the inner surface of the control unit housing portion, the vibration isolating case can be fixed inside the control unit housing portion. By suppressing the vibration of the case itself, the vibration transmitted to the unit body can be absorbed more effectively. Further, when the vibration isolating case is inserted into the control unit accommodating portion, the contact area between the control unit accommodating portion and the vibration isolating case can be reduced by the protrusion, so that the insertion resistance is reduced and the insertion work is reduced. Can be reduced.

  A connector is provided at an end of the wire harness, and the control unit has a connection part to which the connector is connected, and the connector connected to the connection part is covered with a connector cover. It may be.

  In this configuration, since the connector is covered with the connector cover, it is not easy to remove the connector from the connection portion, and it is difficult to remove the control unit, so that theft can be effectively prevented.

  The connector or the control unit may have an unlocking part that releases the mutual locking, and the locking release part may be covered with the connector cover.

  In this configuration, since the locking release portion is covered with the connector cover, it is more difficult to remove the control unit, and theft can be more effectively prevented.

  The anti-vibration case and the connector cover may be integrally formed as a control unit case.

  In this configuration, the vibration-proof case and the connector cover can be easily formed from the same material.

  A portion of the connector cover that covers the locking release portion may be further covered with the control unit housing portion.

  In this configuration, since the unlocking portion is covered not only by the connector cover but also by the control unit housing portion, theft can be more effectively prevented.

  A movement blocking part or a movement blocking member that locks the connector cover and prevents the connector cover from moving in a direction parallel to the inner surface may be provided on the inner surface of the control unit housing portion.

  In this configuration, since the movement of the connector cover can be blocked by the movement blocking section or the movement blocking member provided on the inner surface of the control unit housing section, it is possible to prevent the connector cover from being detached.

  An insertion port into which the control unit is inserted may be formed at the lower end of the control unit housing portion.

  In this configuration, since the wire harness can be pulled out from the insertion port formed in the lower end portion of the control unit housing portion, the wire harness can be smoothly guided downward of the air cleaner box.

  The anti-vibration case is inserted into the control unit housing portion together with the control unit from the insertion port, and a groove through which the movement preventing portion extends during insertion extends on the outer surface of the anti-vibration case. It may be formed.

  In this configuration, since the movement blocking portion can be passed through the groove formed on the outer surface of the vibration proof case, it is possible to reduce the frictional resistance between the vibration proof case and the movement blocking portion, and to the control unit housing portion. The vibration isolation case can be easily inserted.

  A frame for mounting the engine may further be provided, and the insertion port may be positioned below an upper end portion of a portion of the frame that is positioned near the insertion port.

  In this configuration, the thief can be prevented from accessing the control unit from the insertion slot by the frame.

  An insertion port into which the control unit is inserted may be formed at the upper end of the control unit housing portion, and the insertion port may be covered with the fuel tank.

  In this configuration, the fuel tank can prevent the thief from accessing the control unit from the insertion slot.

  The engine includes a plurality of combustion chambers for burning fuel supplied from the fuel tank, a valve mechanism provided corresponding to each of the plurality of combustion chambers, and a cam mechanism for opening and closing each of the valve mechanisms. A power mechanism that transmits power to the cam mechanism, and a power mechanism housing portion that is provided on one side in the column direction of the combustion chamber row composed of the plurality of combustion chambers and houses the power mechanism, The air cleaner box is disposed above the engine, and a non-flow passage region where the flow passage does not exist is formed above the power mechanism housing portion, and at least a part of the control unit includes the You may arrange | position in the non-flow-path area | region.

  When the air cleaner box is arranged above the engine, it is most reasonable to configure an air flow path above the plurality of combustion chambers, and a power mechanism provided on one side in the column direction in the combustion chamber row A wide non-flow channel region where no flow channel exists can be secured above the housing portion. In the above configuration, since at least a part of the control unit is arranged in the non-flow channel region, the non-flow channel region can be used effectively.

  As is apparent from the above description, according to the present invention, it is possible to effectively cool the control unit while preventing the position of the fuel tank from increasing. Therefore, it is possible to prevent the driver's posture from being largely restricted by the fuel tank, and to improve the degree of freedom of the riding posture when traveling.

FIG. 1 is a right side view showing the overall configuration of the motorcycle according to the first embodiment. FIG. 2 is an enlarged right side view showing the configuration of the engine E in the motorcycle according to the first embodiment. FIG. 3 is a plan view schematically showing the internal structure of the cylinder head in the motorcycle according to the first embodiment. FIG. 4 is a plan view schematically showing a positional relationship of main parts (including an engine and a control unit) in the motorcycle according to the first embodiment. FIG. 5 is a perspective view showing the configuration of the control unit and the connector in the motorcycle according to the first embodiment. FIG. 6 is a perspective view showing a configuration of a control unit case (anti-vibration case and connector cover) in the motorcycle according to the first embodiment. FIG. 7 is a perspective view showing a process of housing the control unit in the control unit case (anti-vibration case and connector cover). FIG. 8 is a cross-sectional view showing a locking structure of the locking protrusion and the locking hole. FIG. 9 is a perspective view showing a configuration of an air cleaner in the motorcycle according to the first embodiment. FIG. 10 is a cross-sectional view showing the mounting structure of the control unit with respect to the air cleaner box, (A) is a cross-sectional view when the mounting structure is cut along a cutting line extending in the width direction of the control unit, and (B) is the mounting structure. It is sectional drawing when a structure is cut | disconnected by the cutting line extended in the thickness direction of a control unit. FIG. 11 is a perspective view illustrating a process of housing an assembly including a control unit case, a control unit, and a connector in a control unit housing portion. FIG. 12 is a cross-sectional view showing a process of housing the assembly including the control unit in the control unit housing portion in the motorcycle according to the second embodiment. FIG. 13 is a cross-sectional view showing a control unit mounting structure with respect to an air cleaner box (control unit housing portion) in a motorcycle according to the third embodiment. FIG. 14 is a partially enlarged cross-sectional view showing a control unit mounting structure with respect to an air cleaner box (control unit housing portion) in a motorcycle according to the fourth embodiment. FIG. 15 is a perspective view showing a state in which the control unit is attached to the air cleaner box in the motorcycle according to the fifth embodiment. FIG. 16 is a perspective view showing a process of housing the assembly including the control unit in the control unit housing portion in the motorcycle according to the fifth embodiment. FIG. 17 is a cross-sectional view showing a control unit mounting structure with respect to an air cleaner box (control unit housing portion) in a motorcycle according to the sixth embodiment.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, the concept of the direction used in the following description is based on the direction seen from the driver who has boarded the motorcycle.

(First embodiment)
[Overall structure of motorcycle]
FIG. 1 is a right side view showing the overall configuration of the motorcycle 10 according to the first embodiment. As shown in FIG. 1, the motorcycle 10 includes a frame 12, a head pipe 14 provided at the front portion of the frame 12, and a pair of left and right pivot frames 16 provided at the rear portion of the frame 12. A steering shaft (not shown) is rotatably inserted into the head pipe 14, and a front fork 18 and a handle 20 are attached to the steering shaft. A pair of left and right swing arms 22 are attached to the pivot frame 16, a front wheel 24 is attached to the lower end portion of the front fork 18, and a rear wheel 26 is attached to the rear end portion of the swing arm 22. Is attached. An engine E is mounted in the center of the frame 12. Above the engine E, a fuel tank 28 that stores fuel supplied to the engine E and a seat 30 that the driver straddles are lined up and down. Has been placed. Further, an air cleaner 32 is disposed above the engine E and below the fuel tank 28, and a control unit (ECU; Electric Control Unit) 34 is provided on a side surface of the air cleaner 32. .

[Engine configuration]
FIG. 2 is an enlarged right side view showing the configuration of the engine E, and FIG. 3 is a plan view schematically showing the internal structure of the cylinder head 40. FIG. 4 is a plan view schematically showing the positional relationship of the main parts (including engine E) in the motorcycle 10.

  As shown in FIG. 2, the engine E includes a cylinder head 40, a cylinder block 42, a crankcase 44, and an oil pan 46. In the embodiment, four combustion chambers 48 are configured, and a piston 50 reciprocated by combustion of the fuel is accommodated in the cylinder block 42, and a piston 50 is accommodated in the crankcase 44. A crankshaft 52 that is rotationally driven by 50 is housed. A throttle device 54 is disposed in the vicinity of the cylinder head 40. The outlet of the throttle device 54 is connected to the intake port of the combustion chamber 48, and the inlet of the throttle device 54 is connected via a duct (not shown). The air cleaner 32 is connected to the exhaust port 144 (FIG. 4). Further, the throttle device 54 is provided with an injector 56 for injecting fuel. The injector 56, an ignition plug (not shown) of the ignition device, a drive motor (not shown) of the throttle valve, and the control unit 34 are provided. The wire harness 58 is electrically connected via an electric wire 58a (FIGS. 5 and 7).

  As shown in FIG. 3, in the cylinder head 40, a plurality of combustion chambers 48 are arranged in a straight line in the left-right direction to form a combustion chamber row L, and each of the plurality of combustion chambers 48 includes a valve mechanism. A cam mechanism 62 that opens and closes the valve mechanism 60 is disposed above the combustion chamber 48. The cam mechanism 62 has two cam shafts 62a, and a sprocket 62b is provided at one end of the cam shaft 62a. Further, a cam chain tunnel 64 as a “power mechanism accommodating portion” is provided to extend in the vertical direction on one side in the row direction in the combustion chamber row L (right side in the present embodiment). Inside, a cam chain 66 is accommodated as a “power mechanism” that transmits the rotational force of the crankshaft 52 (FIG. 2) to the camshaft 62 a, and this camchain 66 is a sprocket provided on the crankshaft 52. 52a (FIG. 2) and a sprocket 62b provided on the camshaft 62a. Therefore, when the engine E is viewed in plan, the center line Q2 extending in the front-rear direction of the combustion chamber row L is more camshaft tunnel than the center line Q1 extending in the front-rear direction of the entire engine E (including the cam chain tunnel 64). 64 is biased to the opposite side.

  As shown in FIG. 4, the frame 12 has a pair of left and right frame portions 12 a and 12 b, and the engine E has a center line Q <b> 1 (FIG. 3) coincident with a center line Q <b> 3 extending in the front-rear direction of the frame 12. Thus, it is arranged below the frame 12. An air cleaner 32 is disposed between the frame portions 12 a and 12 b above the engine E, and a fuel tank 28 is disposed above the air cleaner 32 so as to cover the air cleaner 32. Accordingly, when the engine E and the frame 12 are viewed in plan, the center line Q2 of the combustion chamber row L is biased to the opposite side of the cam chain tunnel 64 from the center line Q3 of the frame 12, and is disposed above the engine E. In the air cleaner 32, the internal flow path R can be configured to be biased toward the opposite side of the cam chain tunnel 64 from the center line Q3 of the frame 12. Therefore, it is possible to secure a wide non-flow path area S (area shown by hatching in FIG. 4) where the flow path R does not exist above the cam chain tunnel 64. In this embodiment, the cam chain The control unit 34 is arranged using the non-flow channel region S located above the tunnel 64.

  In this embodiment, the cam chain 66 is used as the “power mechanism”. However, the type of the “power mechanism” is not limited to the “chain system”, and the “bevel gear system” or the “gear train” is used. "Method" may be used. In this case, the configuration of the “power mechanism housing portion” may also be changed to be suitable for the type of “power mechanism”. Further, the type of the frame 12 is not particularly limited, and “twin tube type”, “monocoque type”, and the like may be appropriately used. Therefore, depending on the type of the frame 12, the frame portions 12a and 12b may not exist, but even in that case, it is possible to arrange the control unit 34 using the non-flow channel region S.

[Control unit configuration]
FIG. 5 is a perspective view showing the configuration of the control unit 34 and the connector 70 in the motorcycle 10, and FIG. 7 is a perspective view showing a process of housing the control unit 34 in the control unit case 72.

  As shown in FIGS. 5 and 7, the control unit 34 includes various sensors (not shown; crank angle sensor, throttle opening sensor, transmission gear position sensor, intake pressure sensor, temperature sensor, etc.) and other electrical components. Based on a given signal, the operation of the engine E and other devices is controlled, and a unit main body 74 including various electronic components (not shown; CPU, ROM, RAM, etc.) and a connector 70 are connected. Two connecting portions 76 are provided.

  The unit main body 74 has a substantially square plate-like first portion 78 and a substantially square plate-like second portion 80 located above the first portion 78, and a lower end surface of the first portion 78. The two connecting portions 76 are arranged side by side on the left and right. Further, the thickness of the first portion 78 is designed to be thicker than the thickness of the second portion 80, so that the first portion 78 is formed on the first surface 74 a on one side of the unit body 74 in the thickness direction. A step 82 is formed between the second portion 80 and the second portion 80. On the other hand, on the second surface 74b on the other side in the thickness direction of the unit main body 74, the first portion 78 and the second portion 80 are continuously flat without a step, and the second surface 74b faces the air cleaner 32 side. It has been. And the 1st latching | locking part 84 latched by the 2nd latching | locking part 90 mentioned later is formed in the both end surfaces of the width direction in the lower end part of the 1st part 78. As shown in FIG.

  The connecting portion 76 has a protruding fitting protrusion 86 into which the connector 70 is fitted, and the fitting protrusion 86 is electrically connected to various electronic components of the unit main body 74. A plurality of first terminals (not shown) are provided.

  The connector 70 has an end cover 88 that covers the end of the wire harness 58 that is a bundle of a plurality of electric wires 58 a, and the end of the end cover 88 has a fitting protrusion 86 of the connecting portion 76. A fitting portion (not shown) to be fitted is formed. A plurality of second terminals (not shown) that are electrically connected to the plurality of electric wires 58 a are provided inside the end cover 88. Further, on one end face in the width direction of the end cover 88, the second locking portion 90 locked to the first locking portion 84 and the engagement between the first locking portion 84 and the second locking portion 90 are provided. An unlocking portion 92 that releases the stopped state is provided.

  As shown in FIG. 7, when connecting the connector 70 to the control unit 34 (connection portion 76), the end cover 88 (fitting portion) of the connector 70 is fitted to the fitting protrusion 86 of the connection portion 76. . Then, the first terminal inside the fitting protrusion 86 and the second terminal inside the end cover 88 are connected, and the first locking portion 84 and the second locking portion 90 are locked, Separation between the control unit 34 (connection portion 76) and the connector 70 is prevented. When removing the connector 70 from the control unit 34 (connecting portion 76), the locking release portion 92 is pressed with fingers or a tool, and the locking of the first locking portion 84 and the second locking portion 90 is released. To do. And the connector 70 is pulled away from the connection part 76, hold | maintaining the cancellation | release state.

  The release method of the locking release portion 92 is not particularly limited, and in addition to the “press release method” of the present embodiment, a “rotation release method” that releases the locking portion by rotating the locking portion, and the like. May be used. Moreover, the latch release | release part 92 does not necessarily need to be provided in the connector 70, and may be provided in the control unit 34 (unit main body 74 or the connection part 76).

[Control unit case configuration]
FIG. 6 is a perspective view showing the configuration of the control unit case 72, and FIG. 7 is a perspective view showing a process of housing the control unit 34 in the control unit case 72.

  As shown in FIGS. 6 and 7, the control unit case 72 houses the control unit 34 and the connector 70, and houses the vibration isolating case 100 that houses the unit main body 74 of the control unit 34 and the connector 70. In this embodiment, the vibration-proof case 100 and the connector cover 102 are integrally formed of a rubber elastic material such as rubber and elastomer.

  The anti-vibration case 100 is a part that accommodates the unit body 74 without any gap in order to protect various electronic components (not shown) housed in the unit body 74 from vibration. In the present embodiment, since the unit main body 74 (FIG. 5) has the substantially square plate-like first portion 78 and the second portion 80, the vibration isolating case 100 that accommodates the first portion 78 without any gaps. It has a substantially rectangular box-shaped first portion 104 for accommodating, and a substantially rectangular box-shaped second portion 106 for accommodating the second portion 80. A step 108 is formed between the first portion 104 and the second portion 106 on the first surface 100 a on one side in the thickness direction of the vibration-proof case 100. On the other hand, on the second surface 100b on the other side in the thickness direction of the vibration isolating case 100, the first portion 104 and the second portion 106 are continuously flat without a step, and the second surface 100b is on the air cleaner 32 side. Is directed. Then, at least one locking projection 114 locked to the locking hole 112 (FIG. 10) of the control unit housing portion 110 is located on the upper end surface of the control unit case 72 (that is, the upper surface of the vibration isolation case 100). Protrusively formed.

  FIG. 8 is a cross-sectional view showing a locking structure between the locking protrusion 114 and the locking hole 112. As shown in FIG. 8, the locking projection 114 is inserted into the locking hole 112 of the control unit housing portion 110 and protrudes upward from the upper surface 110 a of the control unit housing portion 110. Formed at the base end portion, formed at the outer peripheral portion of the abutting portion 114b that abuts the inner surface 110b of the upper end portion of the control unit housing portion 110, and the central portion in the longitudinal direction of the protruding portion 114a, and is locked to the upper surface 110a. And a locking portion 114c. The outer diameter of the protruding portion 114a is designed to be approximately the same size or smaller than the inner diameter of the locking hole 112 so that the protruding portion 114a can be easily inserted into the locking hole 112. The outer diameter of the abutting portion 114b is designed to be larger than the inner diameter of the locking hole 112 so that the abutting portion 114b can abut against the inner surface 110b of the upper end portion. The outer diameter of the lower end portion of the locking portion 114c is designed to be larger than the inner diameter of the locking hole 112 so that the locking portion 114c can be locked to the upper surface 110a. The outer peripheral surface of 114c is formed in a taper shape that decreases in diameter toward the distal end side of the protruding portion 114a so that the locking portion 114c can be easily inserted into the locking hole 112.

  As shown in FIGS. 6 and 7, the connector cover 102 covers the two connectors 70 connected to the connection portion 76 of the control unit 34, and a substantially rectangular cylindrical body is divided into planes parallel to the axis thereof. The 1st cover part 120 and the 2nd cover part 122 which have the shape divided | segmented by are provided. The first cover part 120 is connected to the anti-vibration case 100 at the edge 100c on the first surface 100a side at the lower end part of the anti-vibration case 100, and the second cover part 122 is connected to the lower end part of the anti-vibration case 100. The end edge 100d on the second surface 100b side is connected to the vibration isolating case 100, whereby the first cover part 120 and the second cover part 122 can be opened and closed at the end edge 100c and the end edge 100d. . Therefore, when attaching / detaching the control unit 34 to / from the anti-vibration case 100 or attaching / detaching the connector 70 to / from the control unit 34 (connection portion 76) accommodated in the anti-vibration case 100, FIG. As shown, by opening the first cover part 120 and the second cover part 122, the connector cover 102 can be moved to a position that does not interfere with the attaching / detaching work, and the work efficiency can be improved.

  In the present embodiment, the vibration-proof case 100 and the connector cover 102 are integrally formed. However, they may be separately formed as parts independent of each other, and in this case, the connector cover 102 is formed. May be formed of a material different from the rubber elastic material.

[Configuration of air cleaner]
FIG. 9 is a perspective view showing the configuration of the air cleaner 32. 10 is a cross-sectional view showing the mounting structure of the control unit 34 to the air cleaner 32, and FIG. 10A is a cross-sectional view of the mounting structure taken along a cutting line extending in the width direction of the control unit 34. FIG. 10B is a cross-sectional view of the mounting structure taken along a cutting line extending in the thickness direction of the control unit 34. Note that FIG. 4 is helpful when grasping the positional relationship between the air cleaner 32 and other components.

  As shown in FIGS. 9 and 4, the air cleaner 32 includes an air cleaner box 130 that forms a flow path R of air supplied to the engine E, and a filter 132 that purifies the air. The air cleaner box 130 has a lower case 134 and an upper case 136 (FIG. 9) made of synthetic resin or the like, and these are joined in a split manner using fixing screws (not shown).

As shown in FIG. 9, the lower case 134 has a bottom plate portion 138 and a side wall portion 140 formed to extend upward from the peripheral edge portion of the bottom plate portion 138. At least one (one in this embodiment) intake port 142 is formed, and a plurality (four in this embodiment) of exhaust ports 144 are formed in the rear portion of the bottom plate portion 138. In addition, a lower part (hereinafter referred to as “lower accommodation part”) 146 of the control unit accommodation part 110 that accommodates the control unit 34 is integrally formed in a part of the side wall part 140. A filter 132 is attached to the intake port 142. on the other hand,
The upper case 136 has a top plate portion 148 and a side wall portion 150 formed to extend downward from the peripheral edge portion of the top plate portion 148, and the control unit 34 is accommodated in a part of the side wall portion 150. An upper portion (hereinafter, referred to as “upper accommodation portion”) 152 of the control unit accommodation portion 110 is integrally formed. In the top plate portion 148, the height of the central portion is designed to be higher than the height of the front portion and the rear portion, so that the air taken into the flow path R from the intake port 142 is smoothly supplied to the exhaust port 144. Can lead to.

  As shown in FIG. 10, the control unit housing part 110 is configured by joining a lower housing part 146 and an upper housing part 152 to each other. The lower accommodating portion 146 is a portion that accommodates the connector 70 and the lower portion (connector cover 102) of the control unit case 72 that accommodates the connector 70. The inner peripheral surface of the lower accommodating portion 146 is the lower portion of the control unit case 72. Is formed in the same shape as the outer peripheral surface of the lower part (in this embodiment, a quadrangle). Further, an insertion port 154 into which an assembly (hereinafter simply referred to as “aggregate”) W of the control unit case 72, the control unit 34, and the connector 70 is inserted is provided at the lower end of the lower housing portion 146. A connection port 156 is formed at the upper end portion of the lower housing portion 146 to which the upper housing portion 152 is connected. In addition, at least one (four in this embodiment) movement blocking portion 158 is integrally formed on the lower end inner surface 146a of the lower accommodating portion 146.

  The movement blocking portion 158 locks the connector cover 102 and blocks the movement of the connector cover 102 in the direction parallel to the lower end inner surface 146a (downward in the present embodiment). It is formed in the shape of a protrusion protruding from the inner surface 146a. A side surface 158 a of the movement preventing portion 158 is formed to be inclined so as to protrude inward as it goes upward, and an upper end surface 158 b of the movement preventing portion 158 is formed in parallel to the lower end surface of the connector cover 102. Yes. Therefore, as shown in FIG. 11, when the assembly W is accommodated in the control unit accommodating portion 110, the control unit case 72 accommodating the control unit 34 and the connector 70 is moved from the insertion port 154 to the side surface of the movement preventing portion 158. It can be inserted into the control unit accommodating portion 110 while sliding along the line 158a. After the insertion, the upper end surface 158b (FIG. 10A) of the movement preventing portion 158 locks the lower end surface of the connector cover 102. By doing so, it is possible to prevent the control unit case 72 from being detached.

  On the other hand, the upper accommodating portion 152 is a portion that accommodates the control unit 34 and a portion excluding the lower portion of the control unit case 72, and the inner peripheral surface of the upper accommodating portion 152 is a portion excluding the lower portion of the control unit case 72. Is formed in the same shape as the outer peripheral surface of the part (in this embodiment, a shape having a step 160). A connection port 162 to which the lower housing part 146 is connected is formed at the lower end of the upper housing part 152. A top plate portion 164 is formed at the upper end portion of the upper housing portion 152, and a locking hole 112 through which the locking protrusion 114 is inserted is formed in the top plate portion 164. Further, a window 166 is formed in a portion of the upper accommodating portion 152 located above the step 160, and a part of the control unit case 72 accommodated in the control unit accommodating portion 110 is exposed to the outside from the window 166. It has come to be.

[Control unit accommodation method]
FIG. 11 is a perspective view illustrating a process of housing the control unit case 72, the control unit 34, and the connector 70 (that is, the assembly W) in the control unit housing portion 110.

  When the control unit 34 is provided on the side surface of the air cleaner box 130, first, as shown in FIG. 9, the air cleaner box 130 is configured by joining the lower case 134 and the upper case 136. The control unit accommodating portion 110 is formed on the side surface. Further, as shown in FIG. 7, the control unit 34 is accommodated in the control unit case 72, and the connector 70 is connected to the connection portion 76 of the control unit 34, so that the control unit case 72, the control unit 34, the connector 70, An assembly W comprising Subsequently, as shown in FIG. 11, the assembly W is inserted from the insertion port 154 formed in the lower end portion of the control unit housing portion 110, and the locking protrusion 114 positioned at the upper end portion of the assembly W is inserted into the locking hole. 112 is inserted.

  When the assembly W is inserted, the movement preventing portion 158 serves as an insertion resistance, but the side surface 158a of the movement preventing portion 158 is inclined so as to protrude inward as it goes upward, and the control unit case 72 is made of rubber. Since it is formed of an elastic material, the control unit case 72 can be easily inserted while being elastically deformed by the movement preventing portion 158. Further, as shown in FIG. 8, the outer diameter of the protrusion 114a in the locking projection 114 is designed to be approximately the same size or smaller than the inner diameter of the locking hole 112, so the assembly W is inserted. The protrusion 114a can be inserted into the locking hole 112 with pressure. Then, after the protruding portion 114a protrudes upward from the upper surface 110a of the control unit accommodating portion 110, the protruding portion 114a can be gripped and pulled with a finger or a tool, so that the outer diameter of the lower end portion of the locking portion 114c is Despite being larger than the inner diameter of the locking hole 112, the locking portion 114c can be easily passed through the locking hole 112.

  When the housing of the assembly W in the control unit housing portion 110 is completed, the air cleaner box 130 is disposed above the engine E and between the frame portions 12a and 12b, and this is attached to the frame 12 using bolts or the like. Fix it. Further, the wire harness 58 drawn out from the insertion port 154 of the control unit accommodating portion 110 is guided downward of the air cleaner box 130, and a part of the plurality of electric wires 58a constituting the wire harness 58 is connected to the engine E (injector 56). Etc.) to be connected. Then, an intake duct 172 (FIG. 2) is connected to the intake port 142, and a throttle device 54 is connected to the exhaust port 144 via a duct (not shown) so as to cover the air cleaner box 130. A fuel tank 28 is disposed above.

[Effect of the first embodiment]
As shown in FIG. 9, in this embodiment, since the control unit housing part 110 is integrally formed on the side surface of the air cleaner box 130, the control unit 34 is housed in the control unit housing part 110 in a state where the control unit 34 is housed in the control unit housing part 110. 34 is disposed on the side surface of the air cleaner box 130. Accordingly, it is possible to reduce the gap between the air cleaner box 130 and the fuel tank 28 located above the air cleaner box 130 to keep the height of the fuel tank 28 low, and the center of gravity of the entire motorcycle 10 becomes undesirably high. It is possible to improve the degree of freedom of the riding posture during traveling. Further, since air flows through the flow path R inside the air cleaner box 130, it is possible to efficiently dissipate heat around the control unit 34 using the air and the side wall 140 of the air cleaner box 130 as a medium. The malfunction of the control unit 34 due to heat can be prevented. Furthermore, since the intake sound generated in the flow path R can be blocked by the control unit 34 provided on the side surface of the air cleaner box 130, noise can be suppressed.

  And since the control unit 34 is provided in the side surface of the air cleaner box 130, the distance of the control unit 34 and the engine E located in the downward direction can be shortened. Therefore, the wire harness 58 connected to the control unit 34 can be smoothly guided to the engine E at a short distance, and design freedom can be improved. In addition, the weight of the motorcycle 10 can be reduced while shortening the length of the wire harness 58 that connects the control unit 34 and the engine E to improve communication efficiency (that is, to reduce electrical loss). it can. Furthermore, since the distance between the control unit 34 and the engine E is short, high communication efficiency can be obtained even when the connection between the control unit 34 and the engine E is changed to a wireless communication system.

  And the connector 70 is provided in the edge part of the wire harness 58, the connector 70 connected to the connection part 76 of the control unit 34 is covered with the connector cover 102 with the latch release part 92, and the connector cover 102 Since the portion covering the lock release portion 92 is further covered with the control unit housing portion 110, the thief can be prevented from accessing the lock release portion 92 from the insertion port 154. Further, the insertion port 154 of the control unit accommodating portion 110 is located below the upper end portion of the portion of the frame 12 that is located close to the insertion port 154, and the insertion port 154 is the frame 12 when viewed from the side. Since it is covered, the frame 12 can also prevent the thief from accessing the control unit 34 from the insertion port 154.

(Second Embodiment)
As shown in FIG. 12, the motorcycle according to the second embodiment uses a control unit case 180 instead of the above-described control unit case 72 (FIG. 6), and the other parts are the first embodiment. The configuration is the same as that of the motorcycle 10 according to the embodiment. Similar to the control unit case 72, the control unit case 180 has a vibration isolating case 100 and a connector cover 102. At least one outer surface of the vibration isolating case 100 and the connector cover 102 is connected to the control unit accommodating portion 110. At least one groove 182 through which the movement preventing portion 158 passes is inserted in the insertion direction.

  Therefore, in the second embodiment, it is possible to reduce the frictional resistance between the outer surface of the control unit case 180 and the movement preventing unit 158, and to easily perform the work of inserting the vibration isolating case into the control unit housing unit 110. Can do. In order to securely lock the movement preventing portion 158 to the connector cover 102, a portion (that is, a locking portion) 182a where the groove 182 does not exist is secured on the outer surface of the lower end portion of the connector cover 102. desirable.

(Third embodiment)
As shown in FIG. 13, the motorcycle according to the third embodiment uses a control unit case 184 instead of the above-described control unit case 72 (FIG. 6), and the other parts are the first embodiment. The configuration is the same as that of the motorcycle 10 according to the embodiment. Like the control unit case 72, the control unit case 184 includes a vibration isolating case 100 and a connector cover 102, and at least one outer surface of the vibration isolating case 100 is in contact with the inner surface of the control unit accommodating portion 110. Two linear protrusions (ribs) 186 are formed extending in the insertion direction of the control unit case 184.

  Therefore, in the third embodiment, it is possible to securely fix the vibration isolating case 100 inside the control unit housing portion 110, and to suppress the vibration of the vibration isolating case 100, thereby controlling the control unit 34 (unit main body 74). It is possible to more effectively absorb the vibration transmitted to. Further, when the vibration isolating case 100 is inserted into the control unit accommodating portion 110, the contact area between the control unit accommodating portion 110 and the vibration isolating case 100 can be reduced by the protrusion 186, so that the insertion resistance is reduced. Thus, the insertion work can be easily performed.

  In addition, the shape of the protrusion 186 is not particularly limited, and may be a dot shape in addition to a linear shape. Further, the protrusion 186 may be formed on the inner surface of the control unit housing part 110 so as to abut on the outer surface of the vibration isolating case 100, and on both the outer surface of the vibration isolating case 100 and the inner surface of the control unit housing part 110. It may be formed.

(Fourth embodiment)
As shown in FIG. 14, in the motorcycle according to the fourth embodiment, the connector cover 102 is locked to the inner surface of the control unit housing 110 described above and parallel to the inner surface (downward in the fourth embodiment). A movement blocking member 188 for blocking the movement of the connector cover 102 is mounted, and the other parts are configured in the same manner as the motorcycle 10 according to the first embodiment. The movement blocking member 188 is formed integrally with the first locking portion 188a and the first locking portion 188a that lock the lower end surface 102a of the connector cover 102, and bites into the inner surface of the control unit housing portion 110. And at least one second locking portion 188b to be locked.

  Therefore, in the fourth embodiment, the removal of the connector cover 102 can be reliably prevented by the movement preventing member 188, and the theft of the control unit 34 can be more effectively prevented. The shape of the first locking portion 188a is not particularly limited as long as the connector cover 102 can be locked, and the shape of the second locking portion 188b is the inner surface of the control unit housing portion 110. It is not particularly limited as long as it can be attached to the. For example, the second locking portion 188b may be formed in a cylindrical shape having bite teeth on the outer peripheral surface, and the first locking portion 188a may be formed in a protruding shape protruding from the second locking portion 188b. Good.

(Fifth embodiment)
As shown in FIGS. 15 and 16, the motorcycle according to the fifth embodiment forms a control unit housing portion 190 instead of the control unit housing portion 110 described above, and includes a control unit case 72, a control unit 34, and The connector 70 (that is, the assembly W) is accommodated in the control unit accommodating portion 190 with the connector 70 facing upward, and the other portions are configured in the same manner as the motorcycle 10 according to the first embodiment. That is, in the fifth embodiment, the insertion port 192 into which the assembly W is inserted is formed at the upper end portion of the control unit housing portion 190, and the insertion port 192 is covered with the fuel tank 28. The wire harness 58 drawn out from the insertion port 192 is guided below the air cleaner box 130 through the insertion port 192 and the fuel tank 28, and a part of the plurality of electric wires 58 a is connected to the engine E. Yes.

  Therefore, in the fifth embodiment, it is possible to prevent the thief from accessing the control unit 34 from the insertion port 192 by the fuel tank 28, and the theft of the control unit 34 can be effectively prevented. Further, by locking the step 108 of the control unit case 72 with the step 194 of the unit accommodating portion 190, it is possible to prevent the assembly W from falling, so that the above-described movement blocking portion 158 (FIG. 10) or movement blocking is performed. Although a configuration similar to the member 188 (FIG. 14) need not be used for “fall prevention”, the similar configuration may be used for “vertical vibration prevention” or the like.

(Sixth embodiment)
As shown in FIG. 17, the motorcycle according to the sixth embodiment includes an air cleaner box that constitutes a part of the control unit housing portions 110 and 190 described above (the control unit housing portion 110 is illustrated in FIG. 17). The vent hole 200 is formed on the side wall 130, and the vent hole 202 communicating with the vent hole 200 is formed on the side wall of the control unit case 72. The other parts are the first embodiment and the fifth embodiment. It is comprised similarly to the motorcycle which concerns on a form. That is, in the sixth embodiment, a part of the outer surface of the control unit 34 is exposed to the internal space of the air cleaner box 130 through the vent holes 200 and 202.

  Therefore, in the sixth embodiment, the air flowing through the air cleaner box 130 is directly applied to a part of the outer surface of the control unit 34, and the control unit 34 can be efficiently cooled. Further, since the control unit case 72 is formed of a rubber elastic material such as rubber and elastomer, the control unit case 72 can perform an airtight seal on the inner peripheral portion of the vent holes 200 and 202. The cooling effect can be enhanced with a simple configuration that does not use a seal member.

  The vent hole 200 is preferably disposed on the dirty side of the flow path R (that is, on the upstream side of the filter 132) because air before being purified by the filter 132 can be used for cooling the control unit 34. In order to realize such an arrangement, the shape of the air cleaner box 130, the position of the filter 132, and the like may be changed as appropriate. Further, the shape, size, and number of the vent holes 200 and 202 are not particularly limited, and may be appropriately changed within a range in which the above-described hermetic sealing function of the control unit case 72 can be exhibited.

(Other embodiments)
In each of the above-described embodiments, the air cleaner box 130 is disposed directly above the engine E, but the positional relationship between the air cleaner box 130 and the engine E is not particularly limited. While the air cleaner box 130 is disposed, the fuel tank 28 may be disposed above the air cleaner box 130.

  In each of the embodiments described above, the control unit 34 is provided on the right side surface of the air cleaner box 130. However, the position of the control unit 34 may be on the side surface of the air cleaner box 130 (that is, the surface excluding the upper surface and the lower surface). The control unit 34 may be provided in the non-flow channel region on any of the left side surface, the front side surface, and the rear side surface.

  Furthermore, in each above-mentioned embodiment, although the control unit 34 and the engine E are connected by the wire harness 58, the control unit 34 and the engine E may be connected by radio | wireless communication.

  Also in these embodiments, as long as the control unit 34 is provided on the side surface of the air cleaner box 130, the height of the fuel tank 28 can be kept low, and the control unit can be operated without impairing the freedom of the riding posture during traveling or the like. 34 can be cooled effectively.

  As described above, the motorcycle according to the present invention can effectively cool the control unit and can improve the degree of freedom of the riding posture during traveling by suppressing the height of the fuel tank low. Therefore, the present invention can be widely applied to motorcycles that can demonstrate the significance of this effect.

E ... Engine L ... Combustion chamber row Q1 ... Center line Q2 of engine E ... Center line Q3 of combustion chamber row L ... Frame center line R ... Flow path S ... Non-flow passage region W ... Assembly 10 ... Motorcycle 12 ... Frame 28 ... Fuel tank 32 ... Air cleaner 34 ... Control unit 40 ... Cylinder head 48 ... Combustion chamber 56 ... Injector 58 ... Wire harness 58a ... Electric wire 64 ... Cam chain tunnel (power mechanism housing part)
66 ... Cam chain (power mechanism)
DESCRIPTION OF SYMBOLS 70 ... Connector 72 ... Control unit case 74 ... Unit main body 76 ... Connection part 78 ... 1st part 80 ... 2nd part 84 ... 1st latching part 90 ... 2nd latching part 92 ... Unlocking part 100 ... Anti-vibration Case 102 ... Connector cover 110 ... Control unit housing part 112 ... Locking hole 114 ... Locking protrusion 130 ... Air cleaner box 132 ... Filter 134 ... Lower case 136 ... Upper case 142 ... Inlet port 144 ... Exhaust port 146 ... Lower side housing Part 152 ... Upper housing part 154 ... Insertion port 158 ... Movement prevention part 182 ... Groove 186 ... Projection part 188 ... Movement prevention member

Claims (11)

Engine,
An air cleaner having a flow path for air supplied to the engine and having an air cleaner box disposed above the engine and a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine,
The air cleaner has a size in the vehicle width direction as it progresses rearward, and has an intake port formed in a front portion and an exhaust port through which air taken into the flow path from the intake port is guided,
The control unit is a motorcycle that is provided on any side surface in the vehicle left-right direction of a portion that increases in the vehicle width direction dimension as it advances rearward on the front side of the air cleaner box. The air cleaner is designed such that the height of the central portion in the front-rear direction is higher than the height of the front portion and the rear portion, and the control unit is disposed in the central portion in the front-rear direction of the side surface of the air cleaner,
The motorcycle according to claim 1, wherein the exhaust port is formed at a rear portion of the air cleaner box. The control unit is disposed on the upstream side of the flow path on the side surface of the air cleaner,
The motorcycle according to claim 1 or 2, wherein one air inlet is formed at a front portion of the air cleaner box, and a plurality of the air outlets are formed at a rear portion of the air cleaner box. A frame extending in the front-rear direction;
Engine,
An air cleaner box comprising an air flow path for supplying air to the engine, and an air cleaner having a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine,
The air cleaner box is disposed above the engine;
The control unit is provided on a side surface of the air cleaner box in any of the left and right directions of the vehicle,
The engine combustion chamber has a center line that is offset from a center line of the frame, and the control unit is disposed on a side surface of the air cleaner box opposite to the side on which the combustion chamber is biased. Motorcycle. The motorcycle according to any one of claims 1 to 4, further comprising a frame that extends in the front-rear direction and increases in size in the vehicle width direction as it advances rearward . Engine,
An air cleaner box comprising an air flow path for supplying air to the engine, and an air cleaner having a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine and provided on a side surface of the air cleaner box;
Including a wire harness connecting the control unit and the engine, and having a wire harness provided with a connector at an end,
The control unit has a connection part to which the connector is connected,
The connector or the control unit has an unlocking portion for releasing mutual locking,
The connector connected to the connection part and the locking release part are covered with a connector cover,
The air cleaner box is integrally formed with a control unit accommodating portion for accommodating the control unit,
The motorcycle , wherein a portion of the connector cover that covers the locking release portion is further covered with the control unit housing portion . Engine,
An air cleaner box comprising an air flow path for supplying air to the engine, and an air cleaner having a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine and provided on a side surface of the air cleaner box;
Including a wire harness connecting the control unit and the engine, and having a wire harness provided with a connector at an end,
The control unit has a connection part to which the connector is connected,
The connector connected to the connecting portion is covered with a connector cover;
The air cleaner box is integrally formed with a control unit accommodating portion for accommodating the control unit,
A motorcycle , wherein a movement blocking portion or a movement blocking member is provided on an inner surface of the control unit housing portion to lock the connector cover and prevent the connector cover from moving in a direction parallel to the inner surface . Engine,
An air cleaner box comprising an air flow path for supplying air to the engine, and an air cleaner having a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine and provided on a side surface of the air cleaner box;
Including a wire harness connecting the control unit and the engine, and having a wire harness provided with a connector at an end,
The control unit has a connection part to which the connector is connected,
The connector connected to the connecting portion is covered with a connector cover;
The air cleaner box is integrally formed with a control unit accommodating portion for accommodating the control unit,
The inner surface of the control unit housing portion is provided with a movement blocking portion that locks the connector cover and prevents the connector cover from moving in a direction parallel to the inner surface .
An insertion port into which the control unit is inserted is formed at the lower end of the control unit housing portion,
A vibration-proof case inserted from the insertion port together with the control unit inside the control unit housing portion,
A motorcycle , wherein a groove through which the movement blocking portion passes when inserted into the insertion port extends in the insertion direction on the outer surface of the vibration isolation case . Engine,
An air cleaner box comprising an air flow path for supplying air to the engine, and an air cleaner having a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine and provided on a side surface of the air cleaner box;
A frame on which the engine is mounted ,
The control unit accommodating portion for accommodating the control unit is formed integrally with the prior SL air cleaner box,
An insertion port into which the control unit is inserted is formed at a lower end portion of the control unit housing portion, and the insertion port is positioned below an upper end portion of a portion located near the insertion port in the frame. A motorcycle. The control unit accommodating portion for accommodating the control unit is formed integrally with the prior SL air cleaner box,
The upper end portion of the control unit housing portion is formed with an insertion port into which the control unit is inserted, and the insertion port is covered with the fuel tank. Motorcycle. Engine,
An air cleaner box comprising an air flow path for supplying air to the engine, and an air cleaner having a filter for purifying the air;
A fuel tank disposed above the air cleaner box and containing fuel supplied to the engine;
A control unit for controlling the engine and provided on a side surface of the air cleaner box,
The engine includes a plurality of combustion chambers for burning fuel supplied from the fuel tank, a valve mechanism provided corresponding to each of the plurality of combustion chambers, and a cam mechanism for opening and closing each of the valve mechanisms. A power mechanism that transmits power to the cam mechanism, and a power mechanism housing portion that is provided on one side in the column direction of the combustion chamber row composed of the plurality of combustion chambers and houses the power mechanism,
Above the power mechanism housing portion, a non-flow channel region where the flow channel does not exist is configured,
At least a part of the control unit is a motorcycle arranged in the non-flow channel region .

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