WO2016143813A1

WO2016143813A1 - Vehicle

Info

Publication number: WO2016143813A1
Application number: PCT/JP2016/057347
Authority: WO
Inventors: 崇雄藤原
Original assignee: 本田技研工業株式会社
Priority date: 2015-03-09
Filing date: 2016-03-09
Publication date: 2016-09-15
Also published as: JPWO2016143813A1; JP6308711B2

Abstract

This vehicle is provided with: a power generator (30); a cover member (34) covering the power generator (30); and a power generation control unit (35) that controls the power generator (30). The vehicle is also provided with a bus bar (40) that wire connects the power generator (30) and the power generation control unit (35) to each other, said bus bar (40) being insert-molded in the cover member (34).

Description

vehicle

The present invention relates to a vehicle.
This application claims priority based on Japanese Patent Application No. 2015-046231 filed in Japan on March 9, 2015, the contents of which are incorporated herein by reference.

A generator that is attached to the crankshaft of the engine and rotates together with the crankshaft; a stator that is attached to the crankcase of the engine; and a power generation control unit that rectifies and controls the power generated by the stator of the generator; , A vehicle including the above is disclosed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2010-226926

However, the generator generates heat due to the current flowing through the stator when generating power.
Further, in the power generation control unit, an electric element such as a FET (field effect transistor) built in when rectifying and controlling the generated power of the stator generates heat. Therefore, it is necessary to cool the heat generated in the generator and the power generation control unit, but there is a problem that the number of parts is increased if a cooling structure is provided individually.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle capable of cooling heat generated in a generator and a power generation control unit while suppressing an increase in the number of parts.

As a means for solving the above problems, an aspect of the present invention has the following configuration.
(1) A vehicle according to an aspect of the present invention includes a power generator, a cover member that covers the power generator, and a power generation control unit that controls the power generator, and connects the power generator and the power generation control unit. The bus bar is insert-molded on the cover member.

(2) In the vehicle according to (1), the cover member includes a connector portion that connects the power generation control portion and the bus bar, and a contact terminal of the connector portion is configured by a part of the bus bar. May be.

(3) In the vehicle according to (1) or (2), the power generation control unit includes a fixing unit for fixing the power generation control unit to the cover member, and the cover member includes the fixing unit. You may provide the support part to support.

(4) In the vehicle according to any one of (1) to (3), the generator includes a rotor and a stator, and the rotor serves as a drive shaft of an engine to which the cover member is attached. The stator may be fixed, the stator may be fixed to the cover member, and the bus bar may be connected to the stator.

(5) The vehicle according to any one of (1) to (4) includes a vehicle body cover, and the vehicle body cover enters through the ventilation hole in front of the power generation control unit and the ventilation hole. A ventilation path that guides wind to the power generation control unit may be formed.

(6) In the vehicle according to any one of (1) to (5), the bus bar may include a portion extending along a wall of the cover member.

According to the vehicle described in (1) of the present invention, heat is easily transferred between the generator and the power generation control unit through the bus bar that is insert-molded in the cover member that covers the generator, and the cover member is also heated. Therefore, it is possible to improve the cooling performance of the generator and the power generation control unit while suppressing the number of parts.

According to the vehicle of the present invention described in (2) above, in the cover member that covers the generator, the contact terminal of the connector portion that connects the power generation control unit and the bus bar is constituted by a part of the bus bar. This makes it easier to transmit the heat generated to the power generation control unit, and the number of parts can be reduced as compared with the case where a member different from the bus bar is used.

According to the vehicle described in (3) of the present invention, the fixing of the power generation control unit and the cover member is stabilized by providing the fixing unit that fixes the power generation control unit to the cover member separately from the connector unit. In addition, the connection between the bus bar and the power generation control unit in the connector unit can be firmly fixed.

According to the vehicle of the present invention described in (4) above, by fixing the stator to the cover member, the bus bar can be easily connected to the stator, and the assembly of the stator and the cover member is attached to the engine side. Thus, since the generator can be assembled together with the attachment of the cover member, the assembly workability of the generator can be improved.

According to the vehicle described in (5) of the present invention, the traveling wind that has entered the ventilation path from the ventilation hole during traveling of the vehicle can be guided to the power generation control unit, and the power generation control unit is effectively cooled. Can do.

According to the vehicle described in (6) of the present invention, the portion of the bus bar that extends along the wall of the cover member is inserted into the cover member, so the bus bar is inserted so as to simply penetrate the wall of the cover member. Compared to the case, the fixing strength of the bus bar can be increased.

1 is a perspective view of a motorcycle according to an embodiment of the present invention as viewed from the right front side. It is sectional drawing which follows the axial direction of the power unit of a motorcycle. It is the side view which looked at the generator of the crank right side of a power unit through the cover member from the axial direction. It is a perspective view of the cover member which covers a generator. It is a side view similar to FIG. 3 of a cover member. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is sectional drawing equivalent to FIG. 6 which shows the modification of attachment of an electric power generation control part. It is a disassembled perspective view, such as a generator. It is the perspective view which assembled | attached the generator and the cover member from the state of FIG. 8, and was set as the 1st assembly. It is the perspective view which assembled | attached the electric power generation control part to the 1st assembly from the state of FIG. 9, and was set as the 2nd assembly. It is sectional drawing in alignment with the axial direction which shows the 1st stage at the time of attaching a 1st assembly to an engine side. It is sectional drawing which shows the 2nd step following a 1st step. It is sectional drawing which shows the 3rd step following a 2nd step. It is the perspective view which looked at the site | part to which the generator etc. of a motorcycle attaches from the lower right front. FIG. 4 is a cross-sectional view taken along the line XV-XV in FIG. 1.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle described below unless otherwise specified. Further, in the drawings used for the following explanation, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown. The line CL in the figure indicates the vehicle left-right center.

1 includes a front wheel 3 steered by a bar handle 2 and a rear wheel 4 driven by a swing type power unit 10. The steering system parts including the bar handle 2 and the front wheel 3 are pivotally supported by the head pipe 5a at the front end of the vehicle body frame 5 so as to be steerable. A front portion of the power unit 10 is pivotally supported on the lower rear side of the body frame 5 so as to be swingable up and down.

Between the front wheel 3 and the rear wheel 4, a step floor 7 on which the driver puts his feet is provided. A leg shield 12b is provided in front of the step floor 7, and a seat 9 on which a driver sits is provided at a position facing the leg shield 12b behind the step floor 7. The space above the step floor 7 between the bar handle 2 and the seat 9 is a straddling space 9s when the driver straddles the vehicle body.

The vehicle body of the motorcycle 1 is covered with a vehicle body cover 12. The vehicle body cover 12 includes a front cover 12a that covers the front portion of the vehicle body frame 5, a leg shield 12b that covers the front of the driver's legs, a step floor 7, and a lower side cover 12c that covers the lower side edge of the step floor 7. And a rear center cover 12d extending upward from the left and right inner sides of the rear portion of the step floor 7, and left and right rear side covers 12e continuous to the left and right rear of the rear center cover 12d.

As shown in FIG. 2, the power unit 10 is integrally provided with a front engine 8 and a rear left power transmission mechanism. The engine 8 is an air-cooled single cylinder engine in which the crank rotation center axis C1 is aligned in the left-right direction (vehicle width direction), and the cylinder 20 protrudes forward substantially horizontally from, for example, a front end portion of the crankcase 16. The cylinder 20 includes a cylinder body 21 attached to the front end portion of the crankcase 16, a cylinder head 22 attached to the front end portion of the cylinder body 21, and a head cover 22 a attached to the front end portion of the cylinder head 22.

A crankshaft 17 is rotatably supported in the crankcase 16. A transmission case 23 extending rearward is integrally provided on the left side of the crankcase 16.
A belt type continuously variable transmission mechanism 24 is accommodated in the transmission case 23. The belt-type continuously variable transmission mechanism 24 is configured by winding a V-belt 24b around a drive pulley 24a coaxially disposed at the left end portion of the crankshaft 17 and a driven pulley (not shown) disposed behind the drive pulley 24a.

The cooling fan 25 is integrally provided on the left side surface of the drive pulley 24a. The cooling fan 25 faces the pulley cover 23 a that covers the left side of the drive pulley 24 a in the transmission case 23. A duct 23 b is connected to the pulley cover 23 a, and this duct 23 b is connected to a cylinder cover 20 a that covers the periphery of the cylinder 20. Thereby, during operation of the engine 8, cooling air is supplied into the cylinder cover 20a by the cooling fan 25, and the cylinder 20 is cooled.

An AC generator (hereinafter simply referred to as a generator) 30 is coaxially supported at the right end of the crankshaft 17.
3 and 6 together, the generator 30 is an outer rotor type, has a plurality of coils 31, and is fixed to a cover member 34 that covers the right end portion of the crankcase 16 of the engine 8. And a cup-shaped rotor 33 having a plurality of magnets 44 that are radially opposed to the coil 31 of the stator 32 and fixed to the crankshaft 17 of the engine 8 so as to be integrally rotatable. The generator 30 functions as a starter motor when the engine 8 is started, and functions as a generator after the engine 8 is started. The generator 30 is disposed outside the oil chamber of the crankcase 16.

A power generation control unit 35 a is disposed outside the generator 30 in the vehicle width direction via a cover member 34. The power generation control unit 35a is attached to the outside of the cover member 34 in the vehicle width direction. The power generation control unit 35 a incorporates various electronic elements (not shown) in a rectangular parallelepiped case 36.
The power generation control unit 35 a controls energization of the coil 31 at a predetermined timing when the engine 8 is started, and rotates the crankshaft 17 together with the rotor 33. After the engine 8 is started, the power generation control unit 35a charges the generated power generated by the rotation of the rotor 33 to an in-vehicle power source (not shown) or directly uses it for devices such as lights.

The stator 32 includes a stator core 37 formed by laminating electromagnetic steel plates. The stator iron core 37 includes an annular portion 37a coaxial with the crankshaft 17, and a plurality of tee scores 38 that project radially from the outer periphery of the annular portion 37a and on which the coil 31 is wound independently. A plurality (for example, three) of screw insertion holes 37b through which screws 61 for fixing the stator core 37 to the cover member 34 are inserted are formed in the annular portion 37a. A support portion 34 a having a screw hole 34 b is formed at a portion facing the screw insertion hole 37 b inside the cover member 34. A position detection sensor 39 that detects the rotational position of the rotor 33 is disposed at a predetermined circumferential position on the outer periphery of the stator 32.

Each coil 31 winds a conductor having a predetermined wire diameter around the tea score 38 with a predetermined number of turns. Each coil 31 is grouped into three systems and then electrically connected to the connector portion 41 a through the three bus bars 40.

The rotor 33 includes a flywheel 42 formed in a substantially T shape in cross section, a rotor yoke 43 formed in a cross section view and attached to the flywheel 42, and an inner circumferential portion of the rotor yoke 43 that is staggered in the circumferential direction. And a magnet 44 attached with polarity. A center portion of the flywheel 42 is a cylindrical portion 42 a that is fitted on the right end portion of the crankshaft 17.

As shown in FIGS. 4 and 5, the cover member 34 is formed in a dome shape using a resin material such as polypropylene. The cover member 34 integrally forms a top plate portion (wall) 45, a peripheral plate portion 46, and a connector portion 41a. The top plate portion 45 is provided with a pair of support portions 47 formed in a boss shape and having screw holes 48, for example, with the center portion interposed therebetween. In addition, the support part 47 may be three or more, for example instead of a pair. The peripheral plate portion 46 is provided with fixing portions 49 that protrude from the outer peripheral side and have screw insertion holes 50 at a plurality of locations (for example, three locations) in the circumferential direction.

The cover member 34 is formed by inserting the core member 51. The cored bar member 51 is configured by combining a plurality of linear metal members, for example. The core member 51 is a top plate insert portion 52 including a plurality of wire rods arranged radially in the top plate portion 45 and a plurality of circumferential wire rods that appropriately connect them, and the top plate portion 46 has a top plate insert portion 52. The peripheral plate insert portion 53 includes a plurality of bent wires connected to the radial wire of the plate insert portion 52. The core metal member 51 is also formed by being inserted into the outer peripheral portion of the cover member 34 and the inside of the fixed portion 49. By combining the top plate insert portion 52 and the peripheral plate insert portion 53, the cover member 34 increases rigidity and suppresses bending, and increases the assembly accuracy of the stator 32 fixed to the cover member 34 on the engine 8 side. .

Referring also to FIG. 8, the power generation control unit 35 a includes a plurality of (for example, two) fixing portions 57 for the cover member 34 in the case 36. The plurality of fixing portions 57 each have a screw insertion hole 58 and are provided so as to face the plurality of support portions 47 of the cover member 34, respectively. In the present embodiment, a pair of support portions 47 and fixing portions 57 are provided on both sides of the connector portion 41a with the power generation control portion 35a attached, but the number of the fixing portions 57 is the number of the support portions 47 of the cover member 34. The number is not limited to a pair as long as the number corresponds to. A small connector portion 60a to be inserted into the connector portion 41a of the cover member 34 is formed on the cover member 34 side of the case 36 of the power generation control portion 35a.

As shown in FIG. 6, the connector portion 41 a of the cover member 34 includes a built-in contact terminal 54 at one end portion of the bus bar 40. The bus bar 40 is formed into a strip shape by a conductive member, and has one end portion as a contact terminal 54 in the connector portion 41 a and the other end portion as a stator connection portion 55. Between the one end portion and the other end portion of the bus bar 40, an extension portion (part) 56 extending along the top plate portion 45 of the cover member 34 is used. The extension part 56 is inserted in the thickness of the top plate part 45, for example. The bus bar 40 may be used also for the position detection sensor 39, or a conductor for the position detection sensor 39 may be inserted separately.

The power generation control unit 35a has a flat shape with the thickness direction directed in the left-right direction, and a small connector portion 60a provided on the inner side in the left-right direction at the top is provided on the upper part of the cover member 34 so as to face the outer side in the left-right direction. The connector portion 41a is inserted from the outside in the left-right direction.
FIG. 7 shows a connector portion 41b provided on the upper end portion of the cover member 34 so as to face upward, and a power generation control portion 35b having a flat shape with the thickness direction directed in the vertical direction. The small connector part 60b provided in the lower part inside the left-right direction of the power generation control part 35b is inserted into the connector part 41b from above.

Next, assembly of the cover member 34, the stator 32, and the power generation control unit 35a will be described with reference to FIGS.
First, the screw 61 is inserted into the screw insertion hole 37b of the annular portion 37a of the stator core 37 of the stator 32, and this screw 61 is screwed into the screw hole 34b of the support portion 34a inside the cover member 34, whereby the stator 32 is covered with the cover member 34. 34 is fixed. At this time, the stator connecting portion 55 of the bus bar 40 is inserted into the connecting portion 37c of the annular portion 37a of the stator core 37 of the stator 32 in the axial direction.

The stator connecting portion 55 of the bus bar 40 is electrically connected to the connecting portion 37c of the stator core 37 by a joining means such as ultrasonic welding. The first assembly 71 is configured by assembling the stator 32 and the cover member 34 integrally (see FIG. 9). The stator 32 may be provided with a receiving terminal portion that can be electrically connected by simply inserting the stator connection portion 55 of the bus bar 40 in the axial direction. In this case, it is possible to electrically connect the bus bar 40 to the stator 32 only by attaching the cover member 34 to the stator 32.

The power generation control unit 35 a is fixed to the cover member 34 by inserting a screw 59 into the screw insertion hole 58 of each fixing portion 57 and screwing the screw 59 into the screw hole 48 of each support portion 47 of the cover member 34. . When each fixing portion 57 of the power generation control unit 35a is fastened to each support portion 47 of the cover member 34, the small connector portion 60a of the power generation control portion 35a is inserted into the connector portion 41a of the cover member 34, and the bus bar 40 is connected to the power generation control portion. It is electrically connected to 35a.

By attaching the power generation control unit 35a to the cover member 34 of the first assembly 71 as described above, the second assembly 72 in which the stator 32 and the electronic elements in the power generation control unit 35a are energized via the bus bar 40. (See FIG. 10).

Next, assembly of the cover member 34, the stator 32, and the power generation control unit 35a to the engine 8 side will be described with reference to FIGS.
First, the stator 32 is assembled to the cover member 34 in advance to form a first assembly 71. On the engine 8 side, the rotor 33 is assembled to the crankshaft 17 in advance.

In the present embodiment, as a device for centering the stator 32 of the first assembly 71 with respect to the rotor 33 on the engine 8 side, an opening 62 for centering is formed at the center of the top plate portion 45 of the cover member 34, The structure which attaches cap 63 to this opening 62 so that attachment or detachment is possible is illustrated. In this case, the cored bar member 51 is formed by connecting an annular part surrounding the opening 62 and a radial part.

¡A stepped columnar centering jig Z is coaxially arranged in the extending direction of the crankshaft 17 with respect to the engine 8. The centering jig Z can move forward and backward with respect to the crankshaft 17. A first assembly 71 is disposed between the centering jig Z and the engine 8. The cap 63 is removed from the cover member 34 of the first assembly 71 in advance.

In this state, by inserting the centering jig Z into the opening 62 of the cover member 34, the cover member 34 and the stator 32 of the first assembly 71 are coaxially centered with respect to the crankshaft 17 and the rotor 33. It will be in the state. Thereafter, by bringing the centering jig Z close to the crankshaft 17 together with the first assembly 71, the stator 32 can be easily and reliably entered into the rotor 33 with a small clearance.

Then, by bringing the cover member 34 into contact with the right end of the crankcase 16, the axial assembly position of the cover member 34 with respect to the crankcase 16 is defined, and the axial assembly position of the stator 32 with respect to the rotor 33 is defined. The In this state, the screw 65 is inserted into the screw insertion hole 50 of the fixing portion 49 of the cover member 34, and the screw 65 is screwed into the screw hole 66 provided around the right end portion of the crankcase 16. Fixed to the right end of the case 16.

After fixing the cover member 34 to the crankcase 16, the centering jig Z is retracted, and the cap 63 is attached to the opening 62, whereby the assembly of the first assembly 71 to the engine 8 side is completed. Thereafter, the power generation control unit 35a is attached to the cover member 34, and the stator 32 and the power generation control unit 35a are electrically connected via the bus bar 40 as described above, whereby the generator 30 and the engine 8 of the power generation control unit 35a are connected. Installation to is completed.

As shown in FIGS. 14 and 15, the motorcycle 1 includes an air passage 28 extending forward and backward along the lower side cover 12 c, for example, inside the right lower side cover 12 c.
The ventilation path 28 introduces traveling air from a cooling air inlet (ventilation hole 26) that opens toward the front of the vehicle at the front end of the lower side cover 12c. The traveling wind introduced into the ventilation path 28 is a cooling wind outlet opening toward the vehicle width direction inner side (power generation control unit 35a side) at the rear end portion extending to the vehicle width direction outer side of the power generation control unit 35a in the lower side cover 12c. It is supplied toward the power generation control unit 35a from the (exhaust hole 27).

Since the power generation control unit 35a is in an exposed state, the power generation control unit 35a is also cooled by the traveling wind that does not pass through the ventilation path 28. The part 35a is efficiently cooled, and the generator 30 is also cooled accordingly. By integrally forming such a wind guide structure on the vehicle body cover 12 (lower side cover 12c), it is possible to reduce the number of parts and the number of assembly steps. Note that the ventilation path 28 is not limited to a tubular shape, and may be one that guides the traveling wind by a groove, a wall, or the like. At this time, the ventilation hole 26 and the exhaust hole 27 do not need to have a hole shape.

As described above, according to the motorcycle 1 in the above embodiment, heat is easily transmitted between the generator 30 and the power generation control unit 35a through the bus bar 40 that is insert-molded in the cover member 34 that covers the generator 30. In addition, since heat is easily transmitted to the cover member 34, the cooling performance of the generator 30 and the power generation control unit 35a can be improved while suppressing the number of parts.

Further, in the motorcycle 1, the contact member 54 of the connector portion 41 a that connects the power generation control unit 35 a and the bus bar 40 in the cover member 34 that covers the power generator 30 is configured by a part of the bus bar 40. 30 heat generation can be easily transmitted to the power generation control unit 35a, and the number of parts can be reduced as compared with the case where a member different from the bus bar 40 is used.

In addition, the motorcycle 1 includes the fixing unit 57 that fixes the power generation control unit 35a to the cover member 34 separately from the connector unit 41a, so that the power generation control unit 35a and the cover member 34 can be stably fixed. In addition, the connection between the bus bar 40 and the power generation control unit 35a in the connector portion 41a can be firmly fixed.

In the motorcycle 1, the stator 32 is fixed to the cover member 34, whereby the bus bar 40 can be easily connected to the stator 32, and the first assembly 71 of the stator 32 and the cover member 34 is connected to the engine 8. By attaching to the side, the generator 30 can be assembled together with the cover member 34, so that the assembly workability of the generator 30 can be improved.

Further, the motorcycle 1 can guide the traveling wind that has entered the ventilation path 28 from the ventilation hole 26 to the power generation control unit 35a during traveling, and can effectively cool the power generation control unit 35a.

In the motorcycle 1, a portion of the bus bar 40 that extends along the top plate portion 45 of the cover member 34 is inserted into the cover member 34, so that the bus bar 40 simply passes through the top plate portion 45 of the cover member 34. Compared with the case where is inserted, the fixing strength of the bus bar 40 can be increased.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the scooter type motorcycle has been described as an example. However, the present invention is not limited to this. In particular, the driver rides a vehicle straddling the vehicle body. All types of vehicles are included, including not only motorcycles (including motorbikes and scooter type vehicles), but also three-wheeled vehicles (including front and rear two wheels as well as front and rear two-wheeled vehicles) or four-wheeled vehicles Is also included.
The configuration in the above embodiment is an example of the present invention, and various modifications can be made without departing from the gist of the present invention, such as replacing the component of the embodiment with a known component.

1 Motorcycle (vehicle)
8 Engine 12 Body cover 17 Crankshaft (drive shaft)
26 Ventilation hole 27 Ventilation hole 28 Ventilation path 30 Generator 32 Stator 33 Rotor 34 Cover member 35a Power generation control unit 35b Power generation control unit 40 Bus bar

41a Connector unit

41b Connector unit 45 Top plate (wall)
47 Supporting part 54 Contact terminal 56 Extension part (part)
57 Fixed part

Claims

A generator,
A cover member covering the generator;
A power generation control unit for controlling the generator;
With
A bus bar for connecting the generator and the power generation control unit;
The bus bar is insert-molded in the cover member.
The cover member includes a connector unit that connects the power generation control unit and the bus bar,
The vehicle according to claim 1, wherein the contact terminal of the connector portion is configured by a part of the bus bar.
The power generation control unit includes a fixing unit for fixing the power generation control unit to the cover member,
The vehicle according to claim 1, wherein the cover member includes a support portion that supports the fixing portion.
The generator includes a rotor and a stator,
The rotor is fixed to a drive shaft of an engine to which the cover member is attached,
The stator is fixed to the cover member;
The vehicle according to any one of claims 1 to 3, wherein the bus bar is connected to the stator.
With a body cover,
5. The vehicle body cover is formed with a ventilation hole in front of the power generation control unit and a ventilation path for guiding the wind that has entered from the ventilation hole to the power generation control unit. The vehicle according to any one of the items.
The vehicle according to any one of claims 1 to 5, wherein the bus bar includes a portion extending along a wall of the cover member.