CN105402020B - Forced air cooling formula internal combustion engine - Google Patents

Abstract

The present invention relates to forced air cooling formula internal combustion engine.The problem of the present invention is, there is provided even if can not can also open heat sink to the heat sink passing power occasion of fan guard, suppress the elevated forced air cooling formula internal combustion engine of temperature.1st heat sink (101),2nd heat sink (102),3rd heat sink (103) is by being configured at the 1st rotary shaft (111),2nd rotary shaft (112),One side of the 3rd rotary shaft (113),Internal radiating part (the 101A as suction side heat sink of fan guard (61) can be entered,102A,103A) and it is configured at the 1st rotary shaft (111),2nd rotary shaft (112),Another side of 3rd rotary shaft (113),Can be to the outside prominent radiating part (101B as atmospheric pressure side heat sink of fan guard (61),103B) form,Area as the radiating part (101A) of suction side heat sink is formed larger than the area of the radiating part (101B) as atmospheric pressure side heat sink,Radiating part (102A) is provided only with the 2nd heat sink (102).

Description

Forced air cooling formula internal combustion engine

Technical field

The present invention relates to the forced air cooling formula internal combustion for possessing the cooling fan with bent axle gearing rotation, suction extraneous air Machine.

Background technology

It is above-mentioned cold as conventional forced air cooling formula internal combustion engine, including cooling fan, fan guard, and multiple heat sinks But fan sucks extraneous air, said fan cover covering by being rotated with being rotatably supported in the bent axle of crankcase and interlocking Cooling fan, crankcase is installed on, and forms the cooling wind suction inlet of suction extraneous air, above-mentioned multiple heat sinks are arranged at wind The cooling wind suction inlet of cover is fanned, is turned round centered on the gyroaxis parallel by the opening surface with cooling down wind suction inlet, opening and closing cooling wind Suction inlet, such forced air cooling formula internal combustion engine are known by people (for example, referring to patent document 1).

The power source of heat sink is temperature-sensitive driver, and heat sink is connected with temperature-sensitive driver by linkage component, is transmitted dynamic Power.In this conventional technology, during the starting of internal combustion engine or during cold conditions, heat sink is closed, suppresses the suction of cooling wind, is realized Promote warming-up, during hot after engine starting, open heat sink, suction cooling wind.

【Patent document 1】Japanese Unexamined Patent Publication 2013-60845 publications

But in the state of wind suction inlet will be cooled down with heat sink and is closed, if temperature-sensitive driver and link rod part occurs Part is in the occasion of the phenomenon of notconnect state, because power can not be transferred into heat sink from temperature-sensitive driver, even if Temperature-sensitive driver acts, and heat sink remains unchanged in the state closed.In this case, once cooling fan rotates, in fan guard As negative pressure, but in above-mentioned conventional technology, when being formed as heat sink in the state opened, be projected into respect to gyroaxis The area of the heat sink of side outside fan guard is more than the area of the heat sink of the side entered in fan guard, therefore, because of above-mentioned negative pressure Effect, for heat sink, compared with opening direction, energized towards closing direction strength, therefore, the state that heat sink remains turned-off, Cooling wind is difficult to suck, and the easily elevated possibility of engine temperature be present.

Then, the occasion of more than set temperature is increased in engine temperature, to protect internal combustion engine, is lighted a fire by cutting off Or the implementation output such as fuel shutoff injection suppresses control.During output control so that speed control set definite value (for example, 20km/h) below.In this way, in the state of implementing to export suppression control, vehicle is difficult to arbitrary traveling, therefore, from just From the viewpoint of profit, it is desirable to extend the running time for suppressing control without output as far as possible.

The content of the invention

The present invention is in view of above-mentioned condition and puts forward, its object is to, there is provided even if can not be to the radiating of fan guard Plate passing power occasion can also open heat sink, suppress the elevated forced air cooling formula internal combustion engine of temperature.

In order to solve above-mentioned problem, forced air cooling formula internal combustion engine of the invention includes：

Cooling fan (62), with rotatably supporting that the bent axle (71) in crankcase (41) interlocks and rotates, suction is outer Portion's air；

Fan guard (61), above-mentioned cooling fan (62) is covered, installed in above-mentioned crankcase (41), while it is outside to form suction The cooling wind suction inlet (63) of air；

Heat sink (101,102,103), to turn centered on the fulcrum of said fan cover (61) (111,112,113) It is dynamic so that above-mentioned cooling wind suction inlet (63) opening and closing is freely；

Driver (104), turn into so that the power source that above-mentioned heat sink (101,102,103) rotates；And

Linkage (105), transmitted from above-mentioned driver (104) to above-mentioned heat sink (101,102,103) for being opened and closed Power；

Above-mentioned forced air cooling formula internal combustion engine is characterised by：

Above-mentioned heat sink (101,102,103) includes:

Suction side heat sink (101A, 102A, 103A), a side of above-mentioned fulcrum (111,112,113) is configured at, can be entered It is internal to enter said fan cover (61)；And

Atmospheric pressure side heat sink (101B, 103B), another side of above-mentioned fulcrum (111,112,113) is configured at, can be to The outside of said fan cover (61) protrudes；

The area of above-mentioned suction side heat sink (101A, 102A) is formed larger than above-mentioned atmospheric pressure side heat sink (101B) Area.

In the above-described configuration, can cause when aforementioned link mechanism (105) turns into disconnected shape with above-mentioned driver (104) During state, above-mentioned heat sink (101,102,103) rotates because of negative pressure.

Also, in the above-described configuration, the area of above-mentioned suction side heat sink (101A, 102A, 103A) can be set as Internal combustion engine (E) is under the negative pressure of idling speed state so that above-mentioned heat sink (101,102,103) rotates.

Also, in the above-described configuration, multiple above-mentioned heat sinks (101,102,103), aforementioned link mechanism (105) can be set With the linkage part (125) for making to interlock between multiple above-mentioned heat sinks (101,102,103), multiple above-mentioned heat sinks (101, 102,103) gross area of the above-mentioned suction side heat sink (101A, 102A) in is formed larger than above-mentioned atmospheric pressure side heat sink The gross area of (101B).

Also, in the above-described configuration, above-mentioned cooling wind suction inlet (63) can be caused to be formed as circular open, said fan cover (61) there is the continuous cylinder portion (61C) in downstream with above-mentioned cooling wind suction inlet (63)；

Provided with multiple above-mentioned fulcrums (111,112,113)；

Multiple above-mentioned heat sinks (101,102,103) comprise at least:

1st heat sink (101), it is arranged at the 1st fulcrum at the circle center (C1) by above-mentioned cooling wind suction inlet (63) (111)；

2nd heat sink (102), be arranged at it is parallel with above-mentioned 1st fulcrum (111), from above-mentioned round center (C1) to a lateral deviation The 2nd fulcrum (112) moved；And

3rd heat sink (103), be arranged at it is parallel with above-mentioned 1st fulcrum (111), from above-mentioned round center (C1) to opposite side 3rd fulcrum (113) of skew；

The edge (102D) abutted with above-mentioned cooling wind suction inlet (63) of above-mentioned 2nd heat sink (102), with the above-mentioned 2nd On the basis of fulcrum (112), the opposite side with above-mentioned 1st heat sink (101) configuration side is made only in；

The edge (103D) abutted with above-mentioned cooling wind suction inlet (63) of above-mentioned 3rd heat sink (103), with the above-mentioned 3rd On the basis of fulcrum (113), the opposite side with above-mentioned 1st heat sink (101) configuration side is made only in.

Also, in the above-described configuration, can be because of the above-mentioned atmospheric pressure side heat sink in above-mentioned 1st heat sink (101) The position not abutted with above-mentioned cooling wind suction inlet (63) of (101B) forms notch (101C) so that above-mentioned 1st heat sink (101) area of the above-mentioned suction side heat sink (101A) in is formed as than the above-mentioned atmospheric pressure in above-mentioned 1st heat sink (101) The area of side heat sink (101B) is big, and the coincidence part (103A) overlapped with above-mentioned notch (101C) is formed in the above-mentioned 2nd radiating Plate (102) or any one party of above-mentioned 3rd heat sink (103).

Also, in the above-described configuration, it can install and dissipated from overall width direction outer side covers the above-mentioned 1st in said fan cover (61) Hot plate (101), above-mentioned 2nd heat sink (102), the ventilation window component (64) of above-mentioned 3rd heat sink (103), in the ventilation window portion Part (64), form the above-mentioned atmospheric pressure side radiating in above-mentioned 1st heat sink (101) when above-mentioned 1st heat sink (101) is opened completely The abutting part (64C4) that plate (101B) abuts, above-mentioned notch (101C) are avoided at above-mentioned abutting part (64C4) formation and shape Into.

Illustrate the effect of the present invention below:

The heat sink of the present invention include being configured at a side of fulcrum, can into the suction side heat sink inside fan guard with And be configured at fulcrum another side, can be to the outside prominent atmospheric pressure side heat sink of fan guard, the face of suction side heat sink Product is formed larger than the area of atmospheric pressure side heat sink, therefore, even if driver and linkage component are in notconnect state, comes from The power of driver can not be transferred to heat sink occasion, because of negative pressure caused by adjoint cooling fan rotation, with heat sink closing side To compared to, energized towards heat sink opening direction strength, therefore, can be with positive opening heat sink, the outside suction from fan guard is cold But wind.Therefore, the temperature rise of internal combustion engine can be suppressed, the wheeled time that vehicle can be made generally to travel can be extended.

Also, when linkage and driver are in notconnect state, heat sink rotates because of negative pressure, therefore, even if occurring Linkage component and driver are in the situation occasion of notconnect state, also heat sink can be opened because of negative pressure, from cooling wind suction inlet Suction cooling wind, cools down internal combustion engine.

Also, the area of suction side heat sink is set as being under the negative pressure of idling speed state in internal combustion engine so that dissipate Hot plate rotates, and therefore, heat sink rotates under the negative pressure in idling speed state, therefore, even if linkage component and biography occurs Dynamic device is in the situation occasion of notconnect state, if producing negative pressure under the idling speed of internal combustion engine, can make heat sink quickly Rotate, suppress the temperature rise of internal combustion engine.

Also, set multiple heat sinks, linkage has and makes the linkage part that multiple heat sinks interlock mutually, multiple radiatings The gross area of suction side heat sink in plate is formed larger than the gross area of atmospheric pressure side heat sink, therefore, sets multiple radiatings The occasion of plate, it can be energized towards the direction strength for opening more than half heat sinks, therefore, even if if not all is multiple Heat sink all turns into above-mentioned area and set, as long as heat sink can be made to interlock mutually with linkage part, then with more than half radiatings Plate rotates to opening direction, by linkage part all heat sinks can be driven to be interlocked towards opening direction.

Also, cooling wind suction inlet is formed as circular open, fan guard has continuous with the downstream of cooling wind suction inlet Cylinder portion, provided with multiple fulcrums, multiple heat sinks are including at least the 1st fulcrum for being arranged at the circle center by cooling down wind suction inlet 1st heat sink, is arranged at the 2nd heat sink of the 2nd fulcrum that is parallel with the 1st fulcrum, being offseted to one side from circle center, and sets In the 3rd heat sink of the 3rd fulcrum that is parallel with the 1st fulcrum, offset from circle center to opposite side, the 2nd heat sink with cooling wind The edge that suction inlet abuts is made only in the opposite side with the 1st heat sink configuration side on the basis of the 2nd fulcrum, the 3rd heat sink The edge abutted with cooling wind suction inlet is made only in the opposite side with the 1st heat sink configuration side on the basis of the 3rd fulcrum, because This, among the 1st heat sink, the 2nd heat sink, the 3rd heat sink so that being sucked with cooling wind in the 2nd heat sink and the 3rd heat sink Mouthful edge abutted is made only in the 2nd heat sink, the one side of the 3rd heat sink, in the cooling wind suction inlet provided with circular open and The fan guard of the cylindrical portion of side downstream, multiple heat sinks are installed, i.e., connecting above-mentioned multiple heat sinks using linkage part makes it Occasion is rotated, each heat sink and the internal face of cylindrical portion will not be caused to interfere, and can swimmingly be rotated, can both cause each radiating The smooth rotation of plate, the rectification effect of cylindrical portion can be improved again.

Also, the position not abutted with cooling wind suction inlet of the atmospheric pressure side heat sink in the 1st heat sink forms otch Portion so that the area of the suction side heat sink in the 1st heat sink is formed as the face than the atmospheric pressure side heat sink in the 1st heat sink Product is big, and the coincidence part formation overlapped with notch is in any one of the 2nd heat sink or the 3rd heat sink, therefore, to form otch The simple structure in portion can set area, and notch is formed at the position not abutted with cooling wind suction inlet, therefore, even if will be cold But wind suction inlet is set to circular open, side downstream be provided with cylindrical portion fan guard occasion, it is also possible that notch or Coincidence part and cylindrical portion internal face are non-interference, and each heat sink can smooth rotation.

Also, in fan guard, the ventilation from overall width direction outer side covers the 1st heat sink, the 2nd heat sink, the 3rd heat sink is installed Window component, in the ventilation window component, form the atmospheric pressure side heat sink when the 1st heat sink is opened completely in the 1st heat sink and support The abutting part connect, notch are avoided being formed at the formation of abutting part, therefore, because multiple heat sinks are connected by linkage part Connect, by the abutting of the abutting part to the 1st heat sink, the complete opening of all heat sinks can be limited, meanwhile, opening completely When, the stable angle for keeping heat sink, therefore, heat sink loosening can be suppressed.Further, notch is avoided at the formation of contact site And formed, therefore, it can both allow the abutting of the abutting part to atmospheric pressure side heat sink, and can forms notch.

Brief description of the drawings

Fig. 1 is the right hand view for the motorcycle that embodiment of the present invention is related to.

Fig. 2 is the right hand view for representing power unit and peripheral structure together.

Fig. 3 is the right hand view for representing power unit major part.

Fig. 4 is the right hand view for representing to unload window component of divulging information from Fig. 3 state.

Fig. 5 is the sectional view for representing in Fig. 3 V-V lines section and peripheral structure together.

Fig. 6 is the section and periphery for blocking vertical direction of Fig. 5 the 1st~the 3rd heat sink along the 1st~the 3rd rotary shaft The sectional view that structure represents together.

Fig. 7 is the sectional view for the 1st~the 3rd heat sink open mode for representing Fig. 5.

Fig. 8 is the sectional view for seeing the 1st heat sink open mode and peripheral structure from below.

Fig. 9 is the sectional view for seeing the 3rd heat sink open mode and peripheral structure from below.

Figure 10 is the stereogram for representing Poewr transmission mechanism and driver together.

Figure 11 is the cylinder portion for representing fan guard and its neighbouring side view.

Figure 12 is bottom and its stereogram of surrounding for the frame section for representing fan guard.

Symbolic significance is as follows in figure:

41- crankcases

61- fan guards

61C- cylinders portion

62- cooling fans

63- cools down wind suction inlet

64- vent windows (louver) part

64C4- between centers vent window (abutting part)

71- bent axles

The heat sinks of 101- the 1st (heat sink (louver board))

101A, 102A- radiating part (suction side heat sink)

101B, 103B- radiating part (atmospheric pressure side heat sink)

101C- notch

The heat sinks (heat sink) of 102- the 2nd

102D, 103D- edge

The heat sinks (heat sink) of 103- the 3rd

103A- radiating parts (suction side heat sink, coincidence part)

104- drivers (actuator)

105- Poewr transmission mechanisms (linkage)

The rotary shafts of 111- the 1st (the 1st fulcrum)

The rotary shafts of 112- the 2nd (the 2nd fulcrum)

The rotary shafts of 113- the 3rd (the 3rd fulcrum)

125- connection members (linkage part)

C1- justifies center

E- internal combustion engines

Embodiment

Below, it is described with reference to the motorcycle that embodiment of the present invention is related to.In explanation, all around and up and down The record in such direction, unless otherwise specified, it is set to identical with the direction of relative car body.Also, symbol FR shown in each figure Represent in front of car body, symbol UP is represented above car body, and symbol LE represents car body left.

Fig. 1 is the right hand view of motorcycle 1.

The power unit 20 of the mounted unit movement type internal combustion engine of motorcycle 1, it is that occupant is straddled in 3 (occupant's seats of attending a banquet Seat) the pedal-type dilly of saddle ride type taken one's seat.

The vehicle body frame F of the motorcycle 1 includes inclined tubular front tube 11 rearwardly and upwardly, prolongs from the front tube 11 to the back lower place The down tube 12 stretched, in the supervisor 14 for the pair of right and left that the rear portion of down tube 12 is connected by crossbeam 13.Front tube 11 is steerably supported The front fork 16 of axle branch front-wheel 15 and the steering handle 17 being connected with the front fork 16.Down tube 12 is bent after extending downwards, backward Side it is horizontal-extending, attend a banquet 3 front, left and right formed opening foot-operated space 4.

In down tube 12 and the binding site of supervisor 14, the support 18 for supporting power unit is set, in the support 18, connection Linkage component 19, power unit 20 is supported by the linkage component 19.

Hind axle 21 is set at the rear portion of power unit 20, in the axle branch trailing wheel 22 (driving wheel) of hind axle 21, also, dynamic Rear buffer 23 is installed between the rear portion of power unit 20 and supervisor 14, by the suspension power unit 20 of rear buffer 23 and Trailing wheel 22.In the top of the power unit 20, and between the supervisor 14 of pair of right and left, it is front and rear it is spaced apart support be used for store head The incorporating section 25 of helmet and other items and fuel tank 26 etc..

Vehicle body frame F is covered with being cooperatively configured the plastic body cover 31 of car body with vehicle body frame F.The car body Cover 31 includes the front shroud 32 from front covering front tube 11, covering occupant (driver) leg front, the leg protection being connected with front shroud 32 Part 33, the foot pedal 34 rearward extended from the bottom of leg protection part 33, and be connected with foot pedal 34, covering body or so The side cover 35 of pair of right and left.

In side cover 35, provided with front and rear extension, it is available for what 2 people rode to attend a banquet 3, is attended a banquet by this and 3 cover from above incorporating section 25 and fuel tank 26.

Fig. 2 is the right hand view for representing power unit 20 and peripheral structure together.

Power unit 20 includes internal combustion engine E, and the V belts set between internal combustion engine E and trailing wheel 22 (reference picture 1) become Fast device (buncher) (not illustrating).Internal combustion engine E is formed as horizontal engine, is set to cause cylinder block from crankcase 41 42nd, cylinder head 43 and cylinder head cover 44 lean forward until close to horizontality.From the crankcase 41 to the part structure of cylinder head cover 44 Into internal combustion engine E internal combustion engine main body 45.

In the bottom of crankcase 41, support 46 prominent forwards is set, the support 46 passes through linkage component 19 and car body Framework F (reference picture 1) connections.Support power unit 20 freely is swung up and down by the linkage component 19.

Above cylinder head 43, throttle-valve body 50 is connected by air intake duct 49, connected in the upstream side of the throttle-valve body 50 Connect air cleaner 51 (reference picture 1).

Below cylinder head 43, blast pipe 55 is connected, the blast pipe 55 extends towards the rear below power unit 20, with Support that the muffler 57 (being also silencing means) at internal combustion engine E rear portion connects by support rack 56.

The occasion, blast pipe 55 extend downward from cylinder head 43, while are bent to car body side (right side), prolong towards the rear Stretch, be connected with the muffler 57 being configured on the right side of car body, therefore, configuration causes by being connected with the right side side of crankcase 41 Aftermentioned fan guard 61 lower section.Muffler 57 is configured at internal combustion engine E rear, the side (right side side) of trailing wheel 22, and The lower section of side cover 35 (reference picture 1), integratedly swings up and down with power unit 20.

Power unit 20 possesses fan guard 61 in the right flank of crankcase 41.Fan guard 61 is to be formed to be configured at crankcase 41 The cover of the cooling wind suction inlet 63 of interior cooling fan 62 (reference picture 5), the cooling wind suction inlet 63 are covered by ventilation window component 64 Lid.

Fig. 3 is the right hand view for representing the major part of power unit 20.Fig. 4 is to represent to unload from Fig. 3 by ventilation window component 64 Under state right hand view.Fig. 5 is the sectional view for representing in Fig. 3 V-V lines section and peripheral structure together.

3~Fig. 5 of reference picture, cooling fan 62 and peripheral structure are illustrated together.

In crankcase 41, the song along the extension of overall width direction is rotatably supported by multiple bearings 72 (reference picture 5) Axle 71 (reference picture 5), by internal combustion engine E four-cycle operation, driving bent axle 71 rotates.The bent axle 71 left and right in crankcase 41 Extension, in left side, axle portion is provided with the driving pulley (not shown) of V variable v-belt drives, by V variable v-belt drives with institute Gear ratio driving hind axle 21 (reference picture 1) rotation of setting.

The right side axle portion of bent axle 71 runs through the cylindrical portion 41A of crankcase 41, prominent to overall width direction right side.In bent axle 71 Right side axle portion, from overall width direction inner side successively fixed generator 74 and Centrifugal Cooling Fan 62.

The outer rotor 74A of generator 74 is formed as towards the circular bowl-shape of overall width direction inside, and on the inside of it, configuration is solid Due to the cylindrical portion 41A of crankcase 41 inner stator 74B.Therefore, by the rotation of bent axle 71, in outer rotor 74A and inner stator Electromagnetic induction effect is produced between 74B, generation power can be obtained.Also, cooling fan 62 rotates integrally with bent axle 71, therefore, Extraneous air can be sucked from the cooling wind suction inlet 63 for being arranged at fan guard 61.

Extraneous air in suction fan cover 61, cylinder block 42, cylinder head 43 in the power unit 20 shown in cooling Fig. 2 Afterwards, the cooling wind outlet never illustrated is discharged to the outside.Thus, it is possible to forced air cooling power unit 20.Including Fig. 5 institutes Show that the air cooling structure of cooling fan 62 can be with generally applicable known features.

Below, fan guard 61 and ventilation window component 64 are illustrated.

As shown in Figures 4 and 5, fan guard 61 is formed as towards overall width direction inside, covering cooling fan 62 substantially Rounded bowl-shape cover, it is made using resin material by integrally formed.The material beyond resin material can also be used Make.

This fan guard 61 integrally comprises the periphery covering part 61A of the periphery of covering cooling fan 62, in periphery covering part The reducing diameter part 61B of undergauge on the outside of 61A overall width direction, and the cylinder portion 61C that outside extends from reducing diameter part 61B to overall width direction.

Cylinder portion 61C is the part that cooling wind suction inlet 63 is formed on the outside of the overall width direction of cooling fan 62, is formed with song The drum of positive circular section centered on axis L1.That is, the cooling wind suction inlet 63 of this structure forms the circular open of positive round.

As shown in figure 4, in the periphery covering part 61A of fan guard 61, up bolt is set to fasten at one and rear one Portion 61D, 61F, these bolt fastening part 61D, 61F are fixed on the right side of crankcase 41 by fastening bolt 81 (2~Fig. 4 of reference picture) Face.Also, symbol 61E, 61E' in Fig. 4 are that the forward shroud continuously set with the front of fan guard 61 is fixed on fastening bolt 81 61'(reference pictures 2) position.

The fan guard 61 is integrally provided with the frame section 61G (incorporating section) in the rectangular section in right hand view, and it is solid In the state of crankcase 41, it is connected with cylinder portion 61C rear, meanwhile, from periphery covering part 61A and reducing diameter part 61B to car Cross direction is protruding outside.

Frame section 61G forms the frame shape of the above-below direction lengthwise longer than fore-and-aft direction, stores multiple rotations described later The rearward end of rotating shaft (the 1st rotary shaft 111, the 2nd rotary shaft 112, the 3rd rotary shaft 113), meanwhile, storage drives these rotary shafts The Poewr transmission mechanism 105 of 111~113 rotations.If frame section 61G is substantially distinguished, cooling wind suction is integrally included in 1st incorporating section 61GA of the rear storage Poewr transmission mechanism 105 of mouth 63, and surrounded below the 1st incorporating section 61GA The 2nd incorporating section 61GB that driver 104 described later etc. is stored.

Also, the region in the 1st incorporating section 61GA, the bolt for being provided for fan guard 61 being installed to crankcase 41 is tight Gu portion 61F, the fastening bolt 81 for being fastened on bolt fastening part 61F is also configured in the 1st incorporating section 61GA.Thus, it is possible to Reduce the fastening bolt 81 for being exposed to outside.

Also, the inwall for integrally comprising above-mentioned bolt fastening part 61F is set on the inside of frame section 61G overall width direction 61GC, by inwall 61GC, the opening on the inside of inaccessible frame section 61G overall width direction.By the structure, rainwater can be prevented Deng the immersion out of overall width direction in lateral frame section 61G, meanwhile, fan guard 61 rigidity of itself can be improved.

As shown in figure 5, ventilation window component 64 is inhaled from the cooling wind of overall width direction lateral septal standard width of a room in an old-style house gap covering fan guard 61 The guard block of entrance 63, it is made using resin material by integrally formed.Also, it can also use beyond resin material Material makes.

What the ventilation window component 64 as shown in figure 3, integrally comprise was connected with the cylinder portion 61C of fan guard 61 has cylinder frame The vent window body 64A of frame shape, and covering be arranged at fan guard 61 frame section 61G overall width direction on the outside of opening Covering part 64B.Vent window body 64A is integrally included in mutually perpendicular fixation in vent window body 64A opening Vent window (horizontal vent window 64C and vertical vent window 64D), can both suck extraneous air, again cooling fan 62 inside protection etc..

Also, as shown in figure 3, in ventilation window component 64, in vent window body 64A circumference, it is spaced apart set it is multiple (being in this example 3) bolt fastening part 64E, these bolt fastening parts 64E are configured to be fixed on fan by fastening bolt 82 The right flank of cover 61.

As shown in Figures 4 and 5, the motorcycle 1 (reference picture 1) of this structure possesses the cooling wind suction inlet for causing fan guard 61 The movable vent window mechanism 100 of 63 opening and closings freely.The movable vent window mechanism 100 includes being used to be opened and closed cooling wind suction inlet 63 Multiple heat sinks (the 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103), turn into the drive of these heat sinks 101~103 The driver 104 in dynamic source, and carry out the Poewr transmission mechanism 105 of power transmission between driver 104 and heat sink 101~103. Also, Fig. 3~Fig. 5 represents to close the state of cooling wind suction inlet 63 by heat sink 101~103.Below, describe in detail movable logical Air regulator mechanism 100 and its peripheral structure.

As shown in figure 4, in fan guard 61, it is provided spaced apart crossing the 1st~the 3rd rotary shaft for cooling down wind suction inlet 63 111~113, each it is integrally formed the 1st~the 3rd heat sink 101~103 in these rotary shafts 111~113.Below, claim to be arranged at The heat sink of 1st rotary shaft 111 is the 1st heat sink 101, and the heat sink for being arranged at the 2nd rotary shaft 112 is referred to as the 2nd heat sink 102, the heat sink for being arranged at the 3rd rotary shaft 113 is referred to as the 3rd heat sink 103.

1st~the 3rd rotary shaft 111~113 is interval configuration parallel to each other apart from top to bottom.More particularly, the 1st rotation Axle 111 is configured so as to turn into by the rotary shaft for the circle center C1 for cooling down wind suction inlet 63.Also, the 2nd rotary shaft 112 is configured to So that as rotary shaft that is 111 parallel with the 1st rotary shaft, being offset from circle center C1 to side (lower side).Also, the 3rd rotary shaft 113 are configured so as to turn into rotary shaft that is 111 parallel with the 1st rotary shaft, offseting to opposite side (upper side) from circle center C1.The 2 and the 3rd rotary shaft 112,113 is configured at position symmetrical above and below on the basis of the 1st rotary shaft 111.

1st~the 3rd rotary shaft 111~113 across cooling wind suction inlet 63, by the groove 61P that is set before and after insertion, 61P, 61Q, 61Q, 61R, 61R are supported, pass through the respective open side in groove 61P, 61P, 61Q, 61Q, 61R, 61R (front side) installation ventilation window component 64, prevents from coming off from groove 61P, 61P, 61Q, 61Q, 61R, 61R.That is, the the 1st~the 3rd rotation Axle 111~113 is rotatably clamped between fan guard 61 and ventilation window component 64.

Point to fore-and-aft direction in these rotary shafts 111~113 interval apart from top to bottom.Fig. 4 state due to occupant not by bus, Therefore, the axis of rotary shaft 111~113 turns into towards front upper place, but when occupant rides, because of the influence of occupant weight, power Unit 20 swings occasion clockwise in right hand view, before being configured so that the axis of each rotary shaft 111~113 points to Rear is to and being horizontal direction.

Here, as shown in figure 3, the horizontal vent window 64C of ventilation window component 64 and the 1st~the 3rd rotary shaft 111~113 are pointed to Equidirectional, more specifically, provided with being divulged information on overlapping with the 1st~the 3rd rotary shaft 111~113 axle in vehicle body side figure Window 64C1~64C3, and a pair of the between centers vent window up and down being configured on these axles between vent window 64C1~64C3 64C4、64C5.Between centers vent window 64C4 is front and rear to be provided with a pair.

By vent window 64C1~64C3 on these axles, the 1st~the 3rd rotary shaft 111~113 of protection is not by outside flying Infringement, meanwhile, the 1st~the 3rd rotary shaft 111~113 can be suppressed to overall width direction lateral offset etc..

Between centers vent window 64C4,64C5 protection cooling wind suction inlet 63 is not encroached on by outside flying, meanwhile, it is located at when the The position that the 1st and the 3rd heat sink 101,103 abuts when 1 and the 3rd heat sink 101,103 is opened completely, is also played as to the 1st And the 3rd heat sink 101,103 the function of abutting part that is positioned of fully open position.

As shown in figure 4, the 1st heat sink 101 is above and below the 1st rotary shaft 111 (both sides vertical with the 1st rotary shaft 111) With a pair of radiating parts 101A, 101B.

The radiating part 101A of one side is formed as the cooling wind suction inlet between the 1st rotary shaft 111 and the 2nd rotary shaft 112 The suitable tabular of 63 opening shape.Also, the radiating part 101B of the opposing party, on the basis of the 1st rotary shaft 111 with radiating The axisymmetric shapes of portion 101A, form notch 101C.That is, radiating part 101B rotates relative to the 1st rotary shaft the 111 and the 3rd The suitable tabular of the opening shape of cooling wind suction inlet 63 between axle 113, is formed with the shape of notch 101C otch.

2nd heat sink 102 is made up of radiating part 102A, and it is formed only into and configured on the basis of the 2nd rotary shaft 112 The opposite side in the side of 1st heat sink 101 (lower section).Radiating part 102A more specifically, is formed as and in the 2nd rotary shaft 112 and cooling The suitable tabular of the convex opening shape in caused lower section between the outer rim of wind suction inlet 63.

Also, the 3rd heat sink 103 includes radiating part 103B and radiating part 103A, above-mentioned radiating part 103B is with the 3rd rotary shaft On the basis of 113, formed in side (top) opposite with the side of the 1st heat sink 101 of configuration, above-mentioned radiating part 103A is with the 3rd rotary shaft On the basis of 113, formed and configuring the side of the 1st heat sink 101, it is overlapping with the notch 101C of the 1st heat sink 101 edge.More Specifically, radiating part 103B is formed as and the caused top between the 3rd rotary shaft 113 and the outer rim of cooling wind suction inlet 63 The suitable tabular of convex opening shape, radiating part 103A are formed as blocking notch 101C shape.

Fig. 6 is by the vertical direction of Fig. 5 the 1st~the 3rd heat sink the 101~103 along the 1st~the 3rd rotary shaft 111~113 The sectional view that the section and peripheral structure blocked represent together.Black circles shown in figure represent the 1st~the 3rd rotary shaft 111~ 113 each axis 111C, 112C, 113C.

As shown in fig. 6, in the 2nd and the 3rd rotary shaft 112,113, provided with when closing the state of cooling wind suction inlet 63 the 1st Concave part 112M, 113M that radiating part 101A, 101B of heat sink 101 front end overlap, abutted.

If describing in detail in figure 6, the concave part 112M of the 2nd rotary shaft 112 forms recessed towards on the outside of overall width direction and lower section Groove, the radiating part 101A of the 1st heat sink 101 lower end is towards direction, the i.e. overall width side for closing cooling wind suction inlet 63 Abutted when laterally rotating, the 1st heat sink 101 is positioned at closed mode.Concave part 112M as shown in figure 4, across and the 2nd rotation All scopes of cooling wind suction inlet 63 in rotating shaft 112 are formed, by being set to the radiating part 101A of the 1st heat sink 101 with being somebody's turn to do The state that concave part 112M is abutted, whole spaces that can be between inaccessible 2nd rotary shaft 112 and the 1st heat sink 101.

As shown in Fig. 4 and Fig. 6, the concave part 113M of the 3rd rotary shaft 113 is formed towards recessed recessed on the inside of overall width direction and top Groove, at the upper end two in addition to the notch 101C of the 1st heat sink 101, towards the direction, i.e. for closing cooling wind suction inlet 63 Abutted when overall width side turns to the inside, the 1st heat sink 101 is positioned at closed mode.

Concave part 113M in the 3rd rotary shaft 113 of radiating part 103A both sides as shown in figure 4, form at two, by dissipating Abutted at the two of hot portion 101B front end, whole gaps that can be between inaccessible 3rd rotary shaft 113 and the 1st heat sink 101.

Thus, the 1st heat sink 101 is positioned as by concave part 112M, 113M closing of the 2nd and the 3rd rotary shaft 112,113 State.

As shown in fig. 6, above-mentioned radiating part 101A lower end relative axis 111C, is formed towards overall width direction offset inboard.Cause This, can cause the concave part (the concave part 112M of the 2nd rotary shaft 112) that the lower end abuts towards the depth on the outside of overall width direction The amount for the skew that shoals is spent, is easy to ensure the rigidity of the 2nd rotary shaft 112.

, therefore, can be with also, above-mentioned radiating part 101B upper end relative axis 111C, is formed towards overall width direction lateral offset So that the concave part (the concave part 113M of the 3rd rotary shaft 113) that the upper end abuts towards the depth shallower on the inside of overall width direction The amount of skew, it is also easy to ensure the rigidity of the 3rd rotary shaft 113.

In the cylinder portion 61C of fan guard 61, provided with the 2nd and the 3rd heat sink when closing the state of cooling wind suction inlet 63 102nd, a pair convex portion 61M, 61N up and down that 103 front end overlaps, abutted.

The convex portion 61M of lower section be formed as the radiating part 102A of the 2nd heat sink 102 lower end to overall width side laterally rotate when The segment difference shape of abutting, across and cooling wind suction inlet 63 and radiating part 102A lower end between it is all formed, inaccessible radiating part Whole gaps between 102A and cooling wind suction inlet 63.On radiating part 102A lower end, also relative axis 112C, towards and pass The opposite side of rotation direction for closing occasion offsets to be formed.

The convex portion 61N of top be formed as the radiating part 103B of the 3rd heat sink 103 upper end to overall width side turn to the inside when The segment difference shape of abutting, across and cooling wind suction inlet 63 and radiating part 103B upper end between it is all formed, can occlusion dissipate Whole gaps between hot portion 103B and cooling wind suction inlet 63.On radiating part 103B upper end, also relative axis 113C, court Side opposite with the rotation direction of closing occasion offsets to be formed.

Also, in cylinder portion 61C, the convex portion (not illustrating) for setting the front and rear edge of the 1st heat sink 101 to overlap, abut, close Fill in the 1st heat sink 101 and cool down whole gaps between wind suction inlet 63.On the convex portion, it is described in detail in Figure 12.

According to above-mentioned occlusion structure, can be sucked by the 1st~the 3rd heat sink 101~103 seamlessly occlusion cooling wind Mouth 63.In this way, by occlusion cooling wind suction inlet 63, the occasion that cooling fan 62 rotates, can be in crankcase 41 Close to the state (vacuum state) forced down than air, it is possible to reduce air drag.Thus, it is possible to reduce the rotary friction of bent axle 71 Wipe, advantageously reduce fuel consumption.

Fig. 7 is the sectional view for the 1st~the 3rd heat sink 101~103 open mode for representing Fig. 5.Fig. 8 is to see the 1st from below The open mode of heat sink 101 and the sectional view of peripheral structure.Fig. 9 is open mode and the week for seeing the 3rd heat sink 103 from below The sectional view of side structure.

As shown in fig. 7, the 1st~the 3rd heat sink 101~103 by aftermentioned connection member 125 all in the same direction (in car In body back view, for clockwise) rotating opening.In the figure 7, the 1st and the 3rd heat sink 101,103 is clockwise Rotate, the radiating part 101B of the upside of the 1st heat sink 101 and the radiating part 103B of the 3rd heat sink 103 front end is to overall width direction Outside rotates, and opens to the position abutted with being located between centers vent window 64C4,64C5 (abutting part) of blinds fan part 64 in advance.

The abutted position makes cooling wind suction inlet 63 fully be open, meanwhile, each heat sink 101~103 is set in car Towards obliquely downward open position on the outside of cross direction.

That is, as shown in fig. 6, between centers vent window 64C4 is arranged at the lower section of the 1st rotary shaft 111, between centers vent window 64C5 is set It is placed in the lower section of the 3rd rotary shaft 113.Therefore, if the 1st and the 3rd heat sink 101,103 open to between centers vent window 64C4, The position that 64C5 is abutted, then the 1st and the 3rd heat sink 101,103 turn into the state of inclined downward laterally.

Thus, cooling wind can be fully sucked in fan guard 61, meanwhile, even if rainwater etc. fall on each heat sink 101~ 103, it can also be discharged to the outside its inclination along each heat sink 101~103, the immersion into fan guard 61 can be suppressed.

As can be seen from figures 8 and 9, between centers vent window 64C4,64C5 and other vent windows (vent window 64C1~64C3 on axle (reference picture 3) and vertical vent window 64D (reference picture 3)) compare, protruded inwardly to overall width side, therefore, when the 1st and the 3rd heat sink 101st, during 103 opening, only the most prominent front end in the overall width direction of the 1st and the 3rd heat sink 101,103 abuts.Thus, both limit The fully open position of 1st and the 3rd heat sink 101,103, between centers vent window 64C4,64C5 can be arranged to small-sized again, also, Between centers vent window 64C4,64C5 easily can be arranged at ventilation window component 64 by integrally formed.

As shown in fig. 7, the 2nd heat sink 102, by being rotated with the 1st and the 3rd heat sink 101,103 to equidirectional, the 2nd dissipates The radiating part 102A of hot plate 102 front end turns to the inside to overall width side.Thus, cooling wind suction inlet 63 can both opened, The 2nd heat sink 102 positioned at bottom can again be opened and closed towards stretching on the outside of overall width direction.

Thus, the ventilation window component 64 on the outside of the overall width direction on covering the 2nd heat sink 102, can be close to the 2nd rotation The side of axle 112 (on the inside of overall width direction) configuration.In this embodiment, rake 64X is formed so that the bottom of ventilation window component 64 Close to the 2nd heat sink 102, car body lateral tilting oblique angle can be set to more favourable shape.

In Fig. 4, Fig. 5 and Fig. 7, the radiating part 101A of the 1st heat sink 101, the radiating part 102A of the 2nd heat sink 102 and The radiating part 103A of 3rd heat sink 103 turns to the inside to overall width side.Under the 1st and the 3rd heat sink 101,103 closed modes, Driver 104 and Poewr transmission mechanism 105 turn into notconnect state occasion, if with bent axle 71 more than set rotating speed to revolve Turning, cooling fan 62 rotates, then because negative pressure caused by fan guard 61, radiating part 101A, 102A, 103A are rotated, therefore, general Radiating part 101A, 102A, 103A are set to suction side heat sink.

Also, the radiating part 101B of the 1st heat sink 101 and radiating part 103B of the 3rd heat sink 103 turns towards overall width direction outside It is dynamic.Here, radiating part 101B, 103B are set to atmospheric pressure side heat sink.

In the 1st heat sink 101, radiating part 101A area is bigger than radiating part 101B area, and big part is otch Portion 101C part.That is, in the 1st heat sink 101, the area of suction side heat sink is bigger than the area of atmospheric pressure side heat sink. Also, in the 3rd heat sink 103, radiating part 103A area is smaller than radiating part 103B area.That is, in the 3rd heat sink 103, The area of suction side heat sink is smaller than the area of atmospheric pressure side heat sink.2nd heat sink 102, which has, is used as suction side heat sink Radiating part 102A, do not possess atmospheric pressure side heat sink.Therefore, the area of atmospheric pressure side heat sink is zero, so, dissipated the 2nd In hot plate 102, it may be said that the area of suction side heat sink is bigger than the area of atmospheric pressure side heat sink.

Also, the radiating part 102A of the 2nd heat sink 102 and the radiating part 103B area equations of the 3rd heat sink 103.

In this way, among the 1st~the 3rd heat sink 101~103, the 1st heat sink 101, the 2nd heat sink 102 in plurality, The area of suction side heat sink is bigger than the area of atmospheric pressure side heat sink.

In other words, the gross area of suction side heat sink (radiating part 101A, 102A, 103A) (dissipates than atmospheric pressure side heat sink Hot portion 101B, 103B) the gross area it is big.

The the 1st~the 3rd heat sink 101~103 comprising the 1st~the 3rd rotary shaft 111~113 passes through one using resin material Body shaping is made, but can also make rotary shaft 111~113 and heat sink 101~103 respectively.Also, it can also use Material beyond resin material makes.

Below, the Poewr transmission mechanism 105 and driver for rotating the 1st~the 3rd heat sink 101~103 are illustrated 104。

Figure 10 is the stereogram for representing Poewr transmission mechanism 105 and driver 104 together.

In one end (rear end) of the 1st~the 3rd rotary shaft 111~113, the pivot link of ring-type is each rotatably installed Part 121,122,123, these pivot link parts 121~123, mutually interlocked by single connection member 125, rotationally Connection.

If describing in detail, these pivot link parts 121~123 have the arm 121A to extension on the inside of overall width direction~ 123A, these arms 121A~123A are rotatably connected to shaft-like connection member 125.

The connection member 125 is the single bar extended downward along the orientation of the 1st~the 3rd rotary shaft 111~113 Shape part so that pivot link part 121~123 is interlocked and rotated.

That is, if connection member 125 is moved upward, pivot link part 121~123 turns towards direction shown in arrow A The dynamic identical anglec of rotation.

On the other hand, if connection member 125 moves downwards, pivot link part 121~123 is towards shown in arrow A The opposite direction in direction rotates the identical anglec of rotation.

As described above, connection member 125 and the arm extended from pivot link part 121~123 towards overall width direction inner side 121A~123A connections, therefore, as shown in Figure 5 and 7, connection member 125 can be configured the 1st~the 3rd rotary shaft 111~ On the inside of 113 overall width direction.Thus, connection member 125 will not be reached on the outside of overall width direction, also, even if opening and closing the 1st~the 3rd Heat sink 101~103, also simply almost above-below direction moves connection member 125, and therefore, connection member 125 will not be towards overall width side Stretch out laterally.Therefore, connection member 125 can be suppressed towards the overhang on the outside of overall width direction, easily tilting of car body angle is had Profit.

As shown in Figure 10, the connection member 125 near pivot link part 121, it is integrally formed towards in overall width direction The connection protuberance 125A that side protrudes, in connection protuberance 125A, is pivotably connected linkage component 127, it passes through The power of driver 104 is transferred to connection member 125 by amplification connecting rod 126.

The linkage component 127 is as above-mentioned connection member 125, in the overall width direction of the 1st~the 3rd rotary shaft 111~113 Inner side, vertically extending rod-like members are formed, and the connection of one end (upper end) rotatably with connection member 125 is used Protuberance 125A connections, the other end (lower end) are connected with amplifying one end of connecting rod 126.

Amplification connecting rod 126 is rotatably arranged at the fulcrum 61J (reference picture 4) for being located at fan guard 61, as shown in Figure 10, In this configuration, including being spaced apart set angle (about 90 degree) from fulcrum 61J radially a pair of arms protruding outside 126A, 126B, and from arm 126B integratedly oblique pinch hand 126D protruding outside upward.By in amplification connecting rod 126 Pinch hand 126D is set, finger grip pinch hand 126D can be used during assembling, workability can be improved.In Fig. 10, symbol L2 Represent fulcrum 61J axis.

The arm 126A of one side is formed as the fork (hereinafter referred to as fork) of concave shape, play as driver 104 can The cylinder rod 104A (take-off lever) of the function in dynamic portion leading section 104B is sliding freely embedded in the fork so that leading section 104B It is readily inserted into/departs from.The arm 126B of the opposing party passes through the bearing pin integrally provided with the bearing pin 126C parallel with fulcrum 61J 126C can the easily lower end with being located at linkage component 127 hole portion 127A it is chimeric.

According to above-mentioned bar linkage structure, if the cylinder rod 104A of driver 104 leading section 104B movements, amplify connecting rod 126 only rotate the anglec of rotation corresponding with the amount of movement using on the basis of axis L2 as the 1st connecting rod, corresponding with the rotation, Linkage component 127 acts, by connection member 125 make pivot link part 121,122,123 respectively around the 1st rotary shaft 111, 2nd rotary shaft 112, the 3rd rotary shaft 113 rotate, and rotate the 1st heat sink 101, the 2nd heat sink 102 and the 3rd heat sink 103.

That is, the driving force of driver 104 is by amplifying connecting rod 126, linkage component 127, connection member 125 and rotating Linkage component 121,122,123 is transferred to the 1st rotary shaft 111, the 2nd rotary shaft 112 and the 3rd rotary shaft 113, the 1st radiating successively Plate 101, the 2nd heat sink 102 and the 3rd heat sink 103 are opened and closed.

Above-mentioned Poewr transmission mechanism 105 is by amplification connecting rod 126 (the 1st linkage component), (the 2nd link rod part of linkage component 127 Part), the company that forms of connection member 125 (the 3rd linkage component) and pivot link part 121,122,123 (the 4th linkage component) Linkage.

If the cylinder rod 104A of driver 104 to arrow B directions stretch out, the 1st heat sink 101, the 2nd heat sink 102 and 3rd heat sink 103 is rotated and opened to arrow C directions.If also, cylinder rod 104A from stretch out state to arrow B opposite directions Shrink, then the 1st heat sink 101, the 2nd heat sink 102 and the 3rd heat sink 103 are rotated and closed to the direction opposite with arrow C.

In this configuration, as shown in figure 5, being stretched out by cylinder rod 104A, its leading section 104B is from figure with shown in solid It is mobile to side position (equivalent to operating position) is stretched out shown in double dot dash line to shrink side position (equivalent to initial position), amplifies The rotational angle θ A counterclockwise of connecting rod 126, accompanies with this, 126C rotational angle θ C of bearing pin, and all rotations connect 121~123 rotational angle θ B of rod unit.

Here, as shown in Fig. 5, Figure 10, amplification connecting rod 126 is formed so that from rotating fulcrum (fulcrum 61J axis L2) To bearing pin 126C distance proportion such as from the center of rotation (pivot of the 3rd rotary shaft 113) in pivot link part 123 extremely The center 123A ' at the position that arm 123A is connected with connection member 125 distance.Even if on pivot link part 121, 122, it is again formed as same with pivot link part 123.Therefore, the rotational angle of pivot link part 121~123 can be caused θ B are bigger than the rotational angle θ A for amplifying connecting rod 126.

Thus, it is configured to minimize driver 104 while suppressing the cylinder rod 104A of driver 104 stroke, one While it can ensure that the rotational angle θ B of pivot link part 121~123 are big.

As shown in Figure 10, between the heat sink 101~103 of pivot link part 121~123 and the 1st~the 3rd, provided with super Stroke absorbing mechanism 130, as right in the state of fully closed position shown in fully open position shown in Fig. 7 and Fig. 5 is stopped at 1st~the 3rd heat sink 101~103 is energized like that, absorbs overshoot journey when causing pivot link 121~123 additional rotation of part Part.

If describing in detail, as shown in Figure 10, set radially protruding outside, forwards from pivot link part 121~123 Fastener 121K, 122K, 123K of bending, set radially protruding outside, rearward from the 1st~the 3rd rotary shaft 111~113 Fastener 111K, 112K, 113K of bending, with above-mentioned fastener 121K~123K radially superposed.

Torsion spring 131 (part of energizing) is chimeric with the 1st~the 3rd rotary shaft 111~113 respectively, by the both ends of these torsion springs 131 Portion, respectively from rotation direction sandwich fastener 111K and fastener 121K, fastener 112K and fastener 122K, fastener 113K and fastener 123K.

Above-mentioned fastener 111K, fastener 121K, torsion spring 131 combination, fastener 112K, fastener 122K, torsion spring 131 Combination, fastener 113K, fastener 123K, torsion spring 131 combination, respectively constitute overshoot journey absorbing mechanism 130.

Due to above-mentioned overshoot journey absorbing mechanism 130, if pivot link part 121~123 rotates, by torsion spring 131, the 1~the 3rd rotary shaft 111~113 rotates, and the 1st~the 3rd heat sink 101~103 rotates.If also, heat sink 101~103 and axle Between blinds fan 64C4,64C5 (abutting part) abut, do not continue to rotate, then pivot link part 121~123 on one side expansion torsion spring The distance at 131 both ends, while the elastic force idle running of resistance torsion spring 131, is prevented to pivot link part 121~123 and the 1st ~the 3 heat sink 101~103 applies excessive loads, meanwhile, invest the 1st~the 3rd heat sink 101~103 and fanned between centers blinds 64C4,64C5 relative appropriate pushing force.Also, when the 1st heat sink 101 of closing, the 2nd heat sink 102 and the 3rd heat sink 103 When, equally, prevent from investing appropriate closing forces while overload.

I.e., in this configuration, connecting rod 126 is amplified by setting, while suppressing the stroke amount of driver 104, while obtaining The amount of spin of 1st~the 3rd heat sink 101~103, and by setting overshoot journey absorbing mechanism 130 to prevent the 1st~the 3rd heat sink 101~103 inordinate rotation, prevents excessive loads from acting on, simultaneously as the elastic force of torsion spring 131, not loosely opening and closing really 1st~the 3rd heat sink 101~103.

Form each part (amplification connecting rod 126, linkage component 127, the connection of Poewr transmission mechanism 105 as shown in Figure 10 Part 125, pivot link part 121~123) as shown in figure 4, being accommodated in the frame section 61G for being integrally provided at fan guard 61. Do not encroached on accordingly, it is capable to be adequately protected by frame section 61G by flying around.Also, the opening in frame section 61G overall width direction Covered by ventilation window component 64, therefore, even if by ventilation window component 64 also can protection structure Poewr transmission mechanism 105 each zero Part.

In Figure 5, the driver 104 of this structure is applicable the temperature-sensitive driver of the temp sensing type acted according to temperature.More specifically Say that, in the driver 104, using temperature-sensing wax cylinder, it is stored because of the wax that temperature-sensitive portion 104C temperature rises and expands, piston in ground Moved because of expansion/contraction of wax, cylinder rod 104A (also referred to as take-off lever) integrally retreats with above-mentioned piston.

The driver 104 is integrally provided with stay member 85 (also referring to Fig. 3), by the stay member 85, by fastening spiral shell Bolt is arranged on the bottom of crankcase 41, according to the oily temperature for the draw-off tray 41P (oil-collecting pan portion) for being stored in the bottom of crankcase 41, Cylinder rod 104A is set to be retreated to overall width direction.Driver 104 is configured at the lower section of cooling fan 62, forms the cylinder of its output shaft Bar 104A axis L3 and the crank axle L1 configured in parallel of bent axle 71.Also, (upper and lower and front and rear) is by fan around driver 104 2nd incorporating section 61GB of cover 61 is surrounded.

Thus, it is possible to driver 104 is not configured close to overall width direction inner side with influenceing by cooling fan 62, with above-mentioned company Relay part 125 or linkage component 127 are compared, and can be configured on the inside of overall width direction.In this way, with connection member 125 or link rod part Part 127 is compared, and configuration is configured in driver 104 further below on the inside of overall width direction, thus, it is easy to ensure tilting of car body Angle.

Also, in this configuration, as shown in Figure 5 and 7, blast pipe 55 is configured in the lower section of driver 104, therefore, it is intended that Hot cut-off is carried out to blast pipe 55 and driver 104.As shown in Figure 5 and 7, in this configuration, wind is used around driver 104 Fan cover 61 surrounds, and therefore, driver 104 can be protected not encroached on by outside flying, meanwhile, easily avoid blast pipe 55 right The heat affecting of driver 104.Therefore, driver 104 can be made suitably to act with matching with the oil temperature in crankcase 41.

Also, the opening on the outside of the overall width direction of fan guard 61 is covered by ventilation window component 64, therefore, even if by the vent window Part 64 can also protect driver 104 not encroached on by outside flying, meanwhile, avoid the heat affecting of outside.

According to above structure, when the low cold conditions of the oil temperature in crankcase 41, the cylinder rod 104A positions of driver 104 In contraction side position as shown in Figure 5, cooling wind suction inlet 63 is completely closed by the 1st~the 3rd heat sink 101~103.Thus, The suction of extraneous air can be suppressed when starting or when heating drives, can energetically be realized and be improved startability or promote warm Gas.

Also, according to the rising of oil temperature, the cylinder rod 104A of driver 104 is protruding outside to overall width direction, therefore, the 1st~ 3rd heat sink 101~103 is rotated, and cooling wind suction inlet 63 is slowly opened.Thus, sucked by the rotation of cooling fan 62 outer Portion's air, can be gas-cooled power unit 20 with air quantity corresponding with aperture area.Thus, can realize proportional to oil temperature cold But, suitably it is cooled into possibility.

Also, the cooling wind suction inlet 63 of fan guard 61 is formed as circular open, therefore, can suppress to cool down wind entanglement.And And fan guard 61 has the cylinder portion 61C (cylindrical portion) for the drum being connected with cooling down the downstream of wind suction inlet 63, therefore, It can also suppress to cool down wind entanglement accordingly, rectification effect can be improved.Therefore, rectification effect is improved, cooling wind is effectively drawn into, makes High efficiency is cooled into possibility.

Also, in this configuration, as shown in Figures 4 and 5, the cooling device of internal combustion engine includes interlocking rotation with bent axle 71, inhaled Enter the cooling fan 62 of extraneous air, cover the wind of cooling fan 62 and the cooling wind suction inlet 63 formed with suction extraneous air Fan cover 61, and installed in fan guard 61, such that cooling wind suction inlet opening and closing rotates freely and connected with connection member 125 Multiple 1st~the 3rd heat sinks 101~103 connect, in the cooling device of above-mentioned internal combustion engine, cooling wind suction inlet 63 is formed as Circular open, fan guard 61 have the cylinder portion 61C being connected with cooling down the downstream of wind suction inlet 63, multiple 1st~the 3rd heat sinks 101~103 comprise at least the 1st heat sink 101 of the 1st rotary shaft 111 for being located at the circle center C1 by cooling down wind suction inlet 63, The 2nd heat sink 102 111 parallel with the 1st rotary shaft, from circle center C1 the 2nd rotary shafts 112 offset to a side side is located at, with And the 3rd heat sink 103 111 parallel with the 1st rotary shaft, from circle center C1 the 3rd rotary shafts 113 offset to opposite side is located at, The part that 2nd heat sink 102 abuts with cooling wind suction inlet 63 is made only in and the 1st radiating on the basis of the 2nd rotary shaft 112 Plate 101 configures the opposite side of side, and the part that the 3rd heat sink 103 abuts with cooling wind suction inlet 63 is with the 3rd rotary shaft 113 for base Standard, it is made only in the opposite side with the 1st heat sink 101 configuration side.That is, the 3rd heat sink 103 on the basis of the 3rd rotary shaft 113, In the opposite side with the 1st heat sink 101 configuration side, radiating part 103B is formed, meanwhile, on the basis of the 3rd rotary shaft 113, the 1st Heat sink 101 configures side, forms the radiating part 103A overlapping with the notch 101C of the 1st heat sink 101 edge.

Therefore, the internal face of the cooling wind suction inlet 63 of circular open can not be contacted, make the 1st~the 3rd heat sink 101~ 103 rotate.Thus, during the 1st~the 3rd heat sink 101~103 when opening and closing cools down wind suction inlet 63 rotates, heat sink 101~ 103 will not interfere with cylinder portion 61C internal faces, can cause 101~103 smooth rotation of the 1st~the 3rd heat sink.

Thus, in this configuration, rectification effect during suction cooling wind can be both improved, realizes the 1st~the 3rd heat sink again 101~103 smooth rotation.

Further, as shown in Fig. 4 and Fig. 6, at least one party of the 2nd and the 3rd rotary shaft 112,113, the 1st heat sink is being configured 101 sides, the 1st heat sink 101 is set to be overlapped when completely closing, concave part 112M, 113M of contiguity, therefore, can when completely closing It is very close to each other between the 1st heat sink 101 and the 2nd and the 3rd rotary shaft 112,113 to cause, it can effectively suppress internally to suck Cool down wind.Also, load during contiguity can be caused to act on rigid phase to the 2nd and the 3rd high rotary shaft 112,113, can drop The low load for the 2nd and the 3rd heat sink 102,103 acts on.

Also, as shown in Figure 5 and 7, fan guard 61 is arranged on the bent axle that overall width direction is pointed in storage on the outside of overall width direction 71 crankcase 41, the internal combustion engine main body 45 (reference picture 2) comprising crankcase 41 are rotatably supported on vehicle body frame F (ginsengs According to Fig. 1), in the bottom of crankcase 41, in the lower section for the connection member 125 for connecting the 1st~the 3rd heat sink 101~103, configuration As the driver 104 of the driving source of these heat sinks 101~103, in the 1st rotary shaft 111 and the overall width of the 2nd rotary shaft 112 On the inside of direction, the linkage component 127 for entering action edge transmission between driver 104 and connection member 125 is configured, therefore, can be with Prevent from linkage component 127 from stretching out on the outside of overall width direction to configure.Thus, it is easy to ensure possess the motor of movement type internal combustion engine body 45 The tilting of car body angle of car 1 (reference picture 1).

Further, as shown in Figure 5 and 7, the 2nd rotary shaft 112 is configured in the lower section of the 1st rotary shaft 111, simultaneously so that rotation Shaft axis point to the configuration of car body fore-and-aft direction, and the 2nd rotary shaft 112 rotates so that the 2nd heat sink 102 is beaten towards overall width direction inner side Open, therefore, when opening and closing cools down wind suction inlet 63, configuration can be prevented in the 2nd heat sink 102 of the lower section of the 1st rotary shaft 111 It is protruding outside to overall width direction, it is easy to ensure tilting of car body angle.

Also, above-mentioned connection member 125 is configured on the inside of the overall width direction of the 1st rotary shaft 111 and the 2nd rotary shaft 112, because This, can prevent connection member 125 from being configured to stretching on the outside of overall width direction, thus be also easy to ensure tilting of car body angle.

Also, driver 104 is arranged on crankcase 41 so that its cylinder rod (output shaft) 104A axis L3 and bent axle 71 Crank axle L1 is parallel, in fan guard 61, forms frame section 61G (the 2nd storages that storage is installed on the driver 104 of crankcase 41 Portion 61GB), at least lower section of frame section 61G covering drivers 104, meanwhile, configure blast pipe in the lower section of driver 104 55。

, can be with when covering the lower section of driver 104 with the 2nd incorporating section 61GB for being arranged at fan guard 61 according to the structure When preventing the bulging downwards of fan guard 61, and fan guard 61 being installed on into crankcase 41 on the outside of overall width direction, the He of fan guard 61 Driver 104 is difficult to interfere, and can easily carry out the storage of the installation and driver 104 of fan guard 61 to the 2nd incorporating section 61GB. Moreover, covering at least lower section of driver 104 with fan guard 61, therefore, both driver 104 can be protected not invaded by slungshot etc. Evil, can protect driver 104 to make its not hot infringement by blast pipe 55, can also improve the operation precision of driver 104 again.

Also, as shown in FIG. 6 and 7, in fan guard 61, install from the heat sink 101 of overall width direction outer side covers the 1st~the 3rd ~103 ventilation window component 64, in the ventilation window component 64, the between centers ventilation that the 1st heat sink 101 abuts when opening completely is set Window 64C4 (abutting part), therefore, abutted by the 1st heat sink 101 between centers vent window 64C4, can limit and use connection member The complete opening of all heat sinks 101~103 of 125 connections, meanwhile, heat sink when keeping opening completely can be stablized 101~103 angle.Therefore, as movement type internal combustion engine body 45, even if carrying the big person of vibration of internal combustion engine main body 45, It is also easy to suppress the loosening of heat sink 101~103.

Further, in this configuration, in ventilation window component 64, the between centers that the 3rd heat sink 103 abuts when being also provided with opening completely Vent window 64C5 (abutting part), therefore, the complete opening of heat sink 101~103 can be more reliably limited, meanwhile, can The angle of heat sink 101~103 when being opened completely with stable holding.

Also, the between centers vent window 64C4 that the 1st heat sink 101 abuts is arranged on the lower section of the 1st rotary shaft 111, therefore, if warm Turn into after gas and open completely or retain towards outer side-lower close to full opening of state, all heat sinks 101~103, i.e., Rainwater etc. is fallen on each heat sink 101~103 can also be discharged to the outside, and can suppress the immersion into fan guard 61.

Figure 11 is the cylinder portion 61C for representing fan guard 61 and its neighbouring side view.

In the cylinder portion 61C of fan guard 61, be integrally formed the convex portion 61M to arc-shaped prominent on the inside of radial direction, 61N、61S、61T、61U、61V。

Convex portion 61M is that the arc-shaped edge 102D as lower end (radiating part 102A lower end) of the 2nd heat sink 102 is abutted Part, convex portion 61N be the 3rd heat sink 103 as upper end (radiating part 103B upper end) arc-shaped edge 103D abut Part.

Convex portion 61S, 61T, 61U, 61V are the conducts of the length direction (along the direction of the 1st rotary shaft 111) of the 1st heat sink 101 The part that arc-shaped edge 101E, 101F, 101G, 101H of edge are abutted.In detail, convex portion 61S, 61T is the 1st heat sink The part that 101 radiating part 101A edge 101E, 101F is abutted, convex portion 61U, 61V are the radiating parts of the 1st heat sink 101 The part that 101B edge 101G, 101H is abutted.

Convex portion 61M, 61S, 61T of the lower section of the 1st rotary shaft 111 are arranged on respect to the 2nd heat sink 102 and the 1st heat sink 101, positioned at (front side of figure) on the outside of overall width direction.Convex portion 61N, 61U, 61V of the top of the 1st rotary shaft 111 are arranged on respect to the 3rd The heat sink 101 of heat sink 103 and the 1st, positioned at (inboard of figure) on the inside of overall width direction.

Convex portion 61M, 61N, 61S, 61T, 61U, 61V it is respective between, pass through the 1st rotary shaft 111, the 2nd rotary shaft 112nd, the 3rd rotary shaft 113.

Figure 12 is frame section 61G bottom and its stereogram of surrounding for representing fan guard 61.

In frame section 61G bottom, the amplification connecting rod 126 being connected with driver 104 is configured.Represent that assembling amplification connects in figure State before bar 126.

Front-rear side walls 61W, 61W in frame section 61G bottom, the company of the connecting rod 126 of mounting amplification in advance when forming assembling Bar mounting portion 61X, 61X, on each connecting rod mounting portion 61X top, groove 61Y, 61Y are formed, it bears to be formed in amplification connecting rod 126 tubular axle portion 126E, 126E.

In side wall 61W, 61W and connecting rod mounting portion 61X, 61X, be provided with fore-and-aft direction insertion fulcrum insertion through hole 61Z, 61Z.Between axle portion 126E, 126E of fulcrum insertion through hole 126F insertion amplification connecting rods 126, fulcrum 61J is inserted by above-mentioned fulcrum Through hole 61Z, 61Z and fulcrum insertion through hole 126F.Symbol 133 is the embedded bullet formed in the endless groove of fulcrum 61J front end Spring back-up ring, by check ring 133, prevent fulcrum 61J from deviating from from branch shaft insertion hole 61Z, 61Z.

Check ring 133 not necessarily must, in the state of fulcrum 61J is installed into fan guard 61, be formed such that with ventilation The covering part 64B of window component 64 covers the outside at fulcrum 61J axial both ends, if preventing fulcrum 61J with covering part 64B Abjection, then can cancel check ring 133.

Below, the process for assembling above-mentioned movable vent window mechanism 100 is illustrated with Fig. 3, Fig. 4, Fig. 5, Figure 10 and Figure 12.

First, as shown in figure 5, driver 104 is installed into crankcase 41 (the 1st process) with multiple fastening bolts 86.So Afterwards, in advance in fan guard 61 (reference picture 4), by from the 1st~the 3rd heat sink 101~103 shown in Figure 10 to amplification connecting rod 126 Linkage component (pivot link part 121~123 (the 3rd linkage component), connection member 125, the link rod part of (the 1st linkage component) Part 127 (the 2nd linkage component), torsion spring 131 (part of energizing)) small combination (being also sub-unit) is carried out, with multiple fastening bolts The fan guard 61 of small modularization is arranged on crankcase 41 (the 2nd process) by 81 (reference pictures 4).

Then, the arm 126A (reference pictures of connecting rod 126 are amplified by the way that the leading section 104B of driver 104 is inserted into 10) after, amplification connecting rod 126 is connected with driver 104, connecting rod 126 will be amplified by fulcrum 61J and be arranged on fan guard 61 the (the 3rd Process).In the 3rd process, in fig. 12, by the way that axle portion 126E, 126E for amplifying connecting rod 126 is positioned in into fan guard in advance 61 groove 61Y, 61Y, it is logical make it that fulcrum 61J is easily inserted from frame section 61G rear by the fulcrum of fan guard 61 Hole 61Z, the fulcrum insertion through hole 126F for amplifying connecting rod 126, fulcrum insertion through hole 61Z, can easily be amplified connecting rod 126 Assembling operation.

The the 1st~the 3rd process more than, completes the assembling of movable vent window mechanism 100.

After assembling movable vent window mechanism 100, ventilation window component 64 is arranged on fan with fastening bolt 82 (reference picture 3) Cover 61 (the 4th processes).Thus, the assembling on the movable periphery of vent window mechanism 100 all terminates.

In this way, the 1st~the 3rd heat sink 101~103, connection member 125, linkage component 127 are installed to fan in advance In the state of cover 61, fan guard 61 is installed in the crankcase 41 for having installed the state of driver 104, therefore, can be by fan Cover 61 the 1st~the 3rd heat sinks 101~103 of small combination installation, connection member 125, the process of linkage component 127, and installation song Simple operation is assembled as the process of axle box 41 and fan guard 61, can make it that assembling or handling operation are easy.

As shown in figure 4 above, Fig. 5, Fig. 7 and Figure 10, the internal combustion engine E of forced air cooling formula includes cooling fan 62, fan guard 61, as the 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 of heat sink, turn into the driver 104 of power source, And the Poewr transmission mechanism 105 as linkage, above-mentioned cooling fan 62 is with rotatably supporting in crankcase 41 Bent axle 71 is interlocked and rotated, and sucks extraneous air, and said fan cover 61 covers cooling fan 62, installed in crankcase 41, and shape Into the cooling wind suction inlet 63 of suction extraneous air, the 1st rotary shaft 111, the 2nd rotary shaft as fulcrum are installed in fan guard 61 112nd, the 3rd rotary shaft 113, above-mentioned the 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 as heat sink is with the 1st Rotated centered on rotary shaft 111, the 2nd rotary shaft 112, the 3rd rotary shaft 113 so that cooling wind suction inlet 63 is opened and closed freely, above-mentioned As the driver 104 of power source the 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 are rotated, above-mentioned conduct The Poewr transmission mechanism 105 of linkage is from driver 104 to the 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 The power for opening and closing is transmitted, in the internal combustion engine E of above-mentioned forced air cooling formula, the 1st heat sink 101, the 2nd heat sink the 102, the 3rd Heat sink 103 by be configured at the 1st rotary shaft 111, the 2nd rotary shaft 112, the 3rd rotary shaft 113 a side, fan guard can be entered Inside 61 as suction side heat sink radiating part 101A, 102A, 103A and be configured at the 1st rotary shaft the 111, the 2nd rotation Axle 112, the 3rd rotary shaft 113 another side, can be to the prominent radiating part as atmospheric pressure side heat sink outside fan guard 61 101B, 103B are formed, and the area as the radiating part 101A of suction side heat sink is formed larger than as atmospheric pressure side heat sink Radiating part 101B area, also, the area as the radiating part 102A of suction side heat sink is formed larger than the 2nd heat sink The area of 102 atmospheric pressure side heat sink (part being not present in the present embodiment).

According to the structure, even if driver 104 and Poewr transmission mechanism 105 are in notconnect state, from driver 104 Power can not be transferred to the 1st heat sink 101, the 2nd heat sink 102, the occasion of the 3rd heat sink 103, because with cooling fan 62 Caused negative pressure in fan guard 61 is rotated in, compared with the 1st heat sink 101, the closing direction of the 2nd heat sink 102, towards the 1st radiating Plate 101, the opening direction of the 2nd heat sink 102 strength are energized, therefore, can be with the heat sink 101 of positive opening the 1st, the 2nd heat sink 102, from the outside suction cooling wind of fan guard 61.Therefore, internal combustion engine E temperature rise can be suppressed, can extend can make vehicle The wheeled time generally travelled.

Also, when driver 104 and Poewr transmission mechanism 105 are in notconnect state, the 1st heat sink 101, the 2nd heat sink 102 rotate because of negative pressure, therefore, can open the 1st heat sink 101, the 2nd heat sink 102, are sucked from cooling wind suction inlet 63 cold But wind, cool down internal combustion engine E.

Also, the area as radiating part 101A, 102A, 103A of suction side heat sink is set so that at internal combustion engine E Under the negative pressure of idling speed state, the 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 rotate, therefore, even if hair Raw driver 104 and Poewr transmission mechanism 105 are in notconnect state situation occasion, if with internal combustion engine E idling speed or its Rotating speed above produces negative pressure in fan guard 61, then can rotate quickly the 1st heat sink 101, the 2nd heat sink 102, can suppress Internal combustion engine E temperature rise.

Also, setting multiple 1st heat sinks 101, the 2nd heat sink 102, the 3rd heat sink 103, Poewr transmission mechanism 105 has Make the connection member as linkage part interlocked between multiple 1st heat sinks 101, the 2nd heat sink 102, the 3rd heat sink 103 125, among multiple 1st heat sinks 101, the 2nd heat sink 102, the 3rd heat sink 103 the 1st at least more than half heat sinks 101, 2nd heat sink 102, the area as the radiating part 101A of suction side heat sink are formed larger than as atmospheric pressure side heat sink Radiating part 101B area, the area as the radiating part 102A of suction side heat sink are formed larger than the big of the 2nd heat sink 102 The area of air pressure side heat sink (part being not present), therefore, multiple 1st heat sinks 101, the 2nd heat sink the 102, the 3rd are set to dissipate The occasion of hot plate 103, it can be energized towards the direction strength of the 1st more than half heat sink 101 of opening, the 2nd heat sink 102, therefore, Even if if not every multiple 1st heat sinks 101, the 2nd heat sink 102, the 3rd heat sink 103 all reach above-mentioned area and set It is fixed, as long as can make to interlock between heat sink by linkage part 125, then with more than half the 1st heat sink the 101, the 2nd radiatings Plate 102 rotates towards opening direction, can be by connection member 125 towards the 1st all heat sinks 101, the 2nd heat sink the 102, the 3rd The opening direction of heat sink 103 carries out gearing driving.

Even if if the heat sink 101 of linkage part 125 and the 1st, the 2nd heat sink 102, the 3rd heat sink 103, which occurs, is in non- Situation occasion as connection status, the 1st heat sink 101 of plurality, the 2nd heat sink 102 can be also caused to rotate with negative pressure, because This, can be from the cooling suction cooling wind of wind suction inlet 63, cooling internal combustion engine E.

Also, as shown in Fig. 4, Fig. 5, Fig. 6 and Figure 11, cooling wind suction inlet 63 is formed as circular open, and fan guard 61 possesses The continuous cylinder portion 61C in downstream with cooling down wind suction inlet 63, multiple the 1st rotary shafts the 111, the 2nd as fulcrum are set to rotate Axle 112, the 3rd rotary shaft 113, multiple heat sinks 101,102,103, which comprise at least, to be arranged at by cooling down in the circle of wind suction inlet 63 1st heat sink 101 of heart C1 the 1st rotary shaft 111 as the 1st fulcrum, be arranged at it is 111 parallel with the 1st rotary shaft, from circle 2nd heat sink 102 of the 2nd rotary shaft 112 as the 2nd fulcrum that heart C1 is offset to a side side, and be arranged at and the 1st rotation Axle 111 is parallel, the 3rd heat sink 103 from circle center C1 the 3rd rotary shafts 113 as the 3rd fulcrum offset to the opposing party side, 2nd heat sink 102 with the edge 102D that abuts of cooling wind suction inlet 63 on the basis of the 2nd rotary shaft 112, be made only in and the 1 heat sink 101 configures the opposite side of side, and the edge 103D abutted with cooling wind suction inlet 63 of the 3rd heat sink 103 is with the 3rd rotation On the basis of rotating shaft 113, the opposite side with the 1st heat sink 101 configuration side, therefore, the radiating of the 1st heat sink the 101, the 2nd are made only in Among plate 102, the 3rd heat sink 103, by will be supported in the 2nd heat sink 102 and the 3rd heat sink 103 with cooling wind suction inlet 63 Edge 102D, the 103D connect is made only in the 2nd heat sink 102, the one side of the 3rd heat sink 103, in the cooling provided with circular open The cylinder portion 61C of wind suction inlet 63 and downstream side fan guard 61, multiple 1st heat sinks 101, the 2nd heat sink the 102, the 3rd are installed Heat sink 103, i.e., connect above-mentioned multiple 1st heat sinks 101, the 2nd heat sink 102, the 3rd heat sink 103 using connection member 125 Its is set to rotate occasion so that each 1st heat sink 101, the 2nd heat sink 102, the 3rd the heat sink 103 not internal face with cylinder portion 61C Interference is produced, can swimmingly rotate, can both realize that each 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 are smooth Rotate, a portion 61C rectification effect can be improved again.

Also, sucked by the radiating part 101B for being used as atmospheric pressure side heat sink in the 1st heat sink 101 and cooling wind The positions that mouth 63 does not abut form notch 101C, the radiating as suction side heat sink being formed such that in the 1st heat sink 101 Portion 101A area is bigger than the area of the radiating part 101B as atmospheric pressure side heat sink in the 1st heat sink 101, as with cutting The radiating part 103A for the coincidence part that oral area 101C is overlapped forms the one party in the 2nd heat sink 102 or the 3rd heat sink 103, because This, can be to form notch 101C simple configuration settings area, also, notch 101C is formed with cooling down wind suction inlet 63 positions not abutted, therefore, even if regarding cooling wind suction inlet 63 as circular open, it is set to be provided with cylinder portion in side downstream The occasion of 61C fan guard 61, notch 101C or the radiating part 103A and cylinder portion 61C as coincidence part internal face also will not Interference, it is possible to achieve the smooth rotation of each 1st heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103.

Also, as shown in Fig. 6, Fig. 7 and Fig. 8, in fan guard 61, install from the heat sink 101 of overall width direction outer side covers the 1st, 2nd heat sink 102, the ventilation window component 64 of the 3rd heat sink 103, in ventilation window component 64, formed and led to as the between centers of abutting part Air regulator 64C4, when the 1st heat sink 101 is opened completely, the radiating part as atmospheric pressure side heat sink in the 1st heat sink 101 101B is abutted, and notch 101C avoids being formed between centers vent window 64C4 formation, therefore, multiple 1st heat sinks the 101, the 2nd Heat sink 102, the 3rd heat sink 103 are connected by connection member 125, pass through supporting for the 1st heat sink 101 and between centers vent window 64C4 Connect, all 1st heat sinks 101, the 2nd heat sink 102, the complete opening of the 3rd heat sink 103 can be limited, meanwhile, complete It is stable to keep the 1st heat sink 101, the 2nd heat sink 102, the angle of the 3rd heat sink 103 during opening, therefore, the 1st can be suppressed Heat sink 101, the 2nd heat sink 102, the 3rd heat sink 103 loosen.Further, notch 101C avoids between centers vent window 64C4 shape Formed into place, therefore, can allow to abut as the radiating part 101B and between centers vent window 64C4 of atmospheric pressure side heat sink, again Notch 101C can be formed.

Above-mentioned embodiment represents the form of the present invention, can arbitrarily be changed not departing from the scope of the inventive concept.

For example, in above-mentioned embodiment, illustrate to be applied to possess the movable of 3 blocks of heat sinks 101~103 by the present invention Vent window mechanism 100, but it is also possible to which the present invention is applied to the multiple heat sinks for including these heat sinks 101~103 The movable vent window mechanism of (preferably odd number block).

Also, in above-mentioned embodiment, illustrate to set the 1st heat sink 101 in the 2nd and the 3rd rotary shaft 112,113 both sides Concave part 112M, 113M for overlapping, touching when completely closing, but it is also possible to be located at the 2nd rotary shaft 112 or the 3rd of one party Rotary shaft 113, it is important that be provided with concave part 112M or 113M in the rotary shaft 112 or 113 of at least one party.

Also, illustrating to use temperature-sensing wax cylinder occasion in driver 104, still, can both use beyond temperature-sensing wax cylinder Temperature-sensitive driver, or other drivers such as electric cylinder or oil cylinder can also be used.

Also, in above-mentioned embodiment, illustrate for the present invention to be applied to the power unit 20 of unit oscillating internal combustion engine The cooling device occasion being applicable, but it is also possible to which the present invention to be applied to the cooling device of known other internal combustion engines.Also, The cooling device suitable for above-mentioned motorcycle 1 is not limited to, the present invention can be also applied to also include the saddle beyond motorcycle Ride the cooling device for the internal combustion engine that type vehicle etc. is carried.Saddle ride type vehicle is not only to include motorcycle (also to include band prime mover Bicycle), also comprising be categorized as ATV (irregular type mobile vehicle) or tricycle etc. three-wheeled vehicle and four-wheel car car .

Claims (6)

1. a kind of forced air cooling formula internal combustion engine, including：

Cooling fan (62), with rotatably supporting that the bent axle (71) in crankcase (41) interlocks and rotates, suck outside empty Gas；

Fan guard (61), above-mentioned cooling fan (62) is covered, installed in above-mentioned crankcase (41), while form suction extraneous air Cooling wind suction inlet (63)；

Heat sink (101,102,103), to be rotated centered on the fulcrum of said fan cover (61) (111,112,113), So that above-mentioned cooling wind suction inlet (63) opening and closing is freely；

Driver (104), turn into so that the power source that above-mentioned heat sink (101,102,103) rotates；And

Linkage (105), transmitted from above-mentioned driver (104) to above-mentioned heat sink (101,102,103) for the dynamic of opening and closing Power；

Above-mentioned forced air cooling formula internal combustion engine is characterised by：

Above-mentioned heat sink (101,102,103) includes:

Suction side heat sink (101A, 102A, 103A), a side of above-mentioned fulcrum (111,112,113) is configured at, can entered upper It is internal to state fan guard (61)；And

Atmospheric pressure side heat sink (101B, 103B), another side of above-mentioned fulcrum (111,112,113) is configured at, can be to above-mentioned The outside of fan guard (61) protrudes；

The area of above-mentioned suction side heat sink (101A, 102A) is formed larger than the face of above-mentioned atmospheric pressure side heat sink (101B) Product,

When aforementioned link mechanism (105) and above-mentioned driver (104) turn into notconnect state, above-mentioned heat sink (101,102, 103) rotated because of negative pressure.

2. the forced air cooling formula internal combustion engine according to described in claim 1, it is characterised in that:

The area of above-mentioned suction side heat sink (101A, 102A, 103A) is set as being in idling speed state in internal combustion engine (E) Negative pressure under so that above-mentioned heat sink (101,102,103) rotates.

3. the forced air cooling formula internal combustion engine recorded according to claim 1 or 2, it is characterised in that:

Multiple above-mentioned heat sinks (101,102,103) are set, and aforementioned link mechanism (105) has and makes multiple above-mentioned heat sinks The linkage part (125) that (101,102,103) interlock mutually, the above-mentioned negative pressure in multiple above-mentioned heat sinks (101,102,103) The gross area of side heat sink (101A, 102A) is formed larger than the gross area of above-mentioned atmospheric pressure side heat sink (101B).

4. the forced air cooling formula internal combustion engine according to described in claim 3, it is characterised in that:

Above-mentioned cooling wind suction inlet (63) is formed as circular open, and said fan cover (61) has and above-mentioned cooling wind suction inlet (63) the continuous cylinder portion (61C) in downstream；

Provided with multiple above-mentioned fulcrums (111,112,113)；

Multiple above-mentioned heat sinks (101,102,103) comprise at least:

1st heat sink (101), it is arranged at the 1st fulcrum (111) at the circle center (C1) by above-mentioned cooling wind suction inlet (63)；

2nd heat sink (102), be arranged at it is parallel with above-mentioned 1st fulcrum (111), offset to one side from above-mentioned round center (C1) 2nd fulcrum (112)；And

3rd heat sink (103), it is arranged at, from above-mentioned round center (C1) to opposite side skew parallel with above-mentioned 1st fulcrum (111) The 3rd fulcrum (113)；

The edge (102D) abutted with above-mentioned cooling wind suction inlet (63) of above-mentioned 2nd heat sink (102), with above-mentioned 2nd fulcrum (112) on the basis of, it is made only in the opposite side with above-mentioned 1st heat sink (101) configuration side；

The edge (103D) abutted with above-mentioned cooling wind suction inlet (63) of above-mentioned 3rd heat sink (103), with above-mentioned 3rd fulcrum (113) on the basis of, it is made only in the opposite side with above-mentioned 1st heat sink (101) configuration side.

5. the forced air cooling formula internal combustion engine according to described in claim 4, it is characterised in that:

Because of the above-mentioned atmospheric pressure side heat sink (101B) in above-mentioned 1st heat sink (101) and above-mentioned cooling wind suction inlet (63) position not abutted forms notch (101C) so that the above-mentioned suction side heat sink in above-mentioned 1st heat sink (101) The area of (101A) is formed as bigger than the area of the above-mentioned atmospheric pressure side heat sink (101B) in above-mentioned 1st heat sink (101), with The coincidence part (103A) that above-mentioned notch (101C) overlaps is formed in above-mentioned 2nd heat sink (102) or above-mentioned 3rd heat sink (103) any one party.

6. the forced air cooling formula internal combustion engine according to described in claim 5, it is characterised in that:

In said fan cover (61), install from above-mentioned 1st heat sink (101) of overall width direction outer side covers, above-mentioned 2nd heat sink (102), the ventilation window component (64) of above-mentioned 3rd heat sink (103), in the ventilation window component (64), above-mentioned 1st heat sink is formed (101) abutting part that the above-mentioned atmospheric pressure side heat sink (101B) when opening completely in above-mentioned 1st heat sink (101) abuts (64C4), above-mentioned notch (101C) are avoided being formed at above-mentioned abutting part (64C4) formation.