JP2013071492A - Cooling device of internal combustion engine for saddle riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of the resonance of a radiator with a radiator cover by improving the mounting workability of the radiator cover in a cooling device of an internal combustion engine for a saddle riding type vehicle in which a radiator is arranged on the extension of the axis of a crankshaft, a cooling fan interlocked and linked coaxially with the crankshaft is arranged at the inner side of the radiator, a cylindrical shroud fixed on the radiator while covering the cooling fan is provided between the radiator and the crankcase, and the radiator cover that covers the radiator from the outside is fastened to the shroud.SOLUTION: An engagement part 66 is provided on the radiator cover 40 so as to support the radiator cover 40 on the radiator 37 by being engaged with the radiator 37 before being fastened to the shroud 39.

Description

  The present invention provides a cooling fan that is rotatably supported by a crankcase of a water-cooled internal combustion engine and that is disposed on an extension of a crankshaft extending in the vehicle width direction, and that is coupled and connected coaxially to the crankshaft. A cylindrical shroud disposed between the radiator and the crankcase and covering the cooling fan and fixed to the radiator is interposed between the radiator and the crankcase, and a radiator cover that covers the radiator from the outside is provided. The present invention relates to a cooling apparatus for a saddle-ride type internal combustion engine fastened to a shroud.

  A radiator is disposed on one side in the vehicle width direction of the crankcase of the internal combustion engine, and a cylindrical shroud that is provided coaxially with the crankshaft and covers a cooling fan disposed between the radiator and the crankcase is disposed between the radiator and the crankcase. Patent Document 1 discloses that a radiator cover that is disposed and covers a radiator is fastened to a shroud.

JP 2008-175087 A

  By the way, in what was indicated by the above-mentioned patent documents 1, a radiator and a shroud were assembled beforehand, and after fixing a radiator to a crankcase in a small assembled state, a radiator cover is fastened to a shroud, When attaching to the radiator cover, it is necessary to install the radiator cover while the radiator and shroud are fixed to the crankcase. This makes the installation of the radiator cover complicated due to the positioning of the fastening holes of the radiator cover and the shroud. There is a possibility that. Moreover, since the radiator cover is fixed only to the shroud, there is a possibility that the vibration of the radiator and the vibration of the radiator cover may resonate. In this case, the vibration load becomes large.

  SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances. The cooling device for an internal combustion engine for a saddle-ride type vehicle that can improve the attachment workability of the radiator cover and prevent the resonance of the radiator and the radiator cover. The purpose is to provide.

  In order to achieve the above object, the present invention provides a radiator disposed on an axial extension of a crankshaft that is rotatably supported by a crankcase of a water-cooled internal combustion engine and extends in the vehicle width direction, and is coaxial with the crankshaft. An interlocking and coupled cooling fan is disposed inside the radiator, and a cylindrical shroud that covers the cooling fan and is fixed to the radiator is interposed between the radiator and the crankcase. In the cooling device for a saddle-ride type vehicle internal combustion engine in which a radiator cover that covers from the outside is fastened to the shroud, the radiator cover is engaged with the radiator before the radiator cover is fastened to the shroud. A first feature is that an engaging portion that can be supported by the radiator is provided.

  In addition to the configuration of the first feature, the present invention has a second feature that a small unit composed of the shroud and the radiator fixed to the shroud is fixed to the crankcase.

  In addition to the configuration of the first or second feature, the third feature of the present invention is that the radiator is directly fastened to the crankcase.

  In the fourth aspect of the invention, in addition to the configuration of the third feature, the radiator cover is formed so as to cover at least a crankcase mounting portion provided in the radiator for fastening the radiator to the crankcase. It is characterized by.

  According to the fifth aspect of the present invention, in addition to any of the configurations of the first to fourth features, a fifth feature is that a locking portion capable of detachably engaging the engaging portion is provided on the filler neck of the radiator. It is characterized by.

  In addition to the configuration of the fifth feature, the sixth feature of the present invention is that an engagement operation direction of the engagement portion with respect to the radiator is set in a vehicle width direction.

  According to the present invention, in addition to the configuration of the fifth or sixth feature, the engagement portion has a leg portion that is flexible and extends inward in the vehicle width direction from the radiator cover, and the vehicle. A seventh feature is that it comprises a claw portion that extends in the front-rear direction and can be engaged with the engaging portion that protrudes from the side surface of the filler neck and is formed at the tip of the leg portion.

  The eighth feature of the present invention is that, in addition to the seventh feature, the radiator cover is formed so as to cover the leg portion from the outside.

  Furthermore, in addition to any of the configurations of the fifth to eighth features of the present invention, the radiator includes an upper tank provided with a filler neck extending upward, a lower tank disposed below the upper tank, A core part provided between the upper tank and the lower tank; and a tank cover that covers the upper tank from the outside in the vehicle width direction, and the locking part is provided on the filler neck above the tank cover. This is the ninth feature.

  According to the first aspect of the present invention, the radiator cover can be supported by being engaged with the radiator before the radiator cover is fastened to the shroud. Therefore, the radiator cover can be mounted with the radiator and the shroud attached to the crankcase. Is fastened to the shroud, the radiator cover can be engaged with and supported by the radiator, and the workability of attaching the radiator cover can be improved. In addition, since the radiator cover is fastened to the shroud and engaged with the radiator, it is possible to prevent the radiator and the radiator cover from resonating and to firmly fix the radiator cover.

  Further, according to the second feature of the present invention, it is possible to improve the assemblability by fixing the small unit formed by fixing the shroud to the radiator to the crankcase.

  According to the third feature of the present invention, the radiator can be firmly fixed to the crankcase by directly fastening the radiator to the crankcase.

  According to the fourth feature of the present invention, the radiator cover is formed so as to cover at least the crankcase mounting portion provided in the radiator, so that the appearance can be improved. Further, even if the radiator cover is enlarged in order to enhance the appearance, the radiator cover can be engaged with the radiator by the engaging portion of the radiator cover, so that the degree of freedom of the shape of the radiator cover can be increased.

  According to the fifth feature of the present invention, the engaging portion of the radiator cover is engaged with the engaging portion provided in the filler neck of the radiator, so that the engaging portion is located at a position avoiding the radiator core and other fastening portions. The radiator cover is firmly fixed to the radiator and the shroud while reducing the number of fastening points by engaging the upper part of the radiator cover with the upper part of the radiator and fastening the lower part of the radiator cover to the shroud. can do.

  According to the sixth aspect of the present invention, the radiator cover can be easily engaged with the radiator from the outside by setting the engagement operation direction of the engagement portion to the radiator to the vehicle width direction.

  According to the seventh feature of the present invention, the engaging portion is composed of a leg portion having flexibility and a claw portion formed at the tip of the leg portion, and is a locking portion protruding from the side surface of the filler neck. Since the claw portion is engaged, the claw portion can be easily engaged with the locking portion while the leg portion is bent.

  According to the eighth feature of the present invention, since the radiator cover covers the leg portion from the outside, the leg portion can be protected and the appearance can be enhanced.

  Furthermore, according to the ninth feature of the present invention, the radiator covers the upper tank provided with the filler neck, the lower tank, the core portion provided between the upper tank and the lower tank, and the upper tank from the outside in the vehicle width direction. The tank cover is provided, and the engaging portion is provided on the filler neck above the tank cover, so that the interference of the engaging portion with the tank cover can be avoided.

1 is a side view of a scooter type motorcycle according to a first embodiment. It is a principal part enlarged side view of the power unit in the state where a radiator cover was omitted. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a sectional view taken along line 4-4 of FIG. FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. It is a longitudinal cross-sectional view which shows the fastening part vicinity to the crankcase of the radiator of 2nd Embodiment.

  Embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the front and rear, the top and bottom, and the left and right directions are directions as viewed from the occupant riding the motorcycle.

  A first embodiment of the present invention will be described with reference to FIGS. 1 to 6. First, in FIG. 1, a vehicle body frame F of this scooter type motorcycle includes a head pipe 11 at the front end thereof and the head pipe. 11, a main frame 12 to which a front end portion is coupled, a cross pipe 13 that extends in the vehicle width direction and is provided at a rear portion of the main frame 12, and a left and a right end that are connected to both ends of the cross pipe 13 respectively. And a pair of rear frames 14.

  A front fork 15 that supports the front wheel WF and a rod-shaped steering handle 16 are supported on the head pipe 11 so as to be steerable. The main frame 12 integrally includes a down frame portion 12a inclined downward from the head pipe 11 and a lower frame portion 12b extending substantially rearward from the rear end of the down frame portion 12a. One pipe is formed by bending. The rear frame 14 is inclined upward and backward from the cross pipe 13 and extends upward, and the rear frame 14 extends upward from the upper end of the rising frame portion 14a at a gentler inclination angle than the rising frame portion 14a. The seat rail portion 14b that is inclined and extends rearward is integrally formed, and a single pipe is formed by bending.

  One end of a hanger portion 76 provided at the front lower portion of the unit swing type power unit P is attached to a bracket 75 provided at the front portion of the rear frames 14. The other end of the link 78 to be connected is connected via a shaft 79, and the power unit P is swingably supported on the vehicle body frame F while being able to swing up and down, and the rear wheel WR is supported by the power unit P. It is pivotally supported at the rear. A rear cushion unit 17 is provided between the rear part of the seat rail part 14b of the left rear frame 14 and the rear part of the power unit P among the pair of left and right rear frames 14.

  A storage box 18 is supported between the front portions of the rear frames 14 in the body frame F, and a tandem-type riding seat 19 that covers the storage box 18 from above can be opened and closed. Supported by Further, a fuel tank 20 supported by the rear frames 14 is disposed behind the storage box 18 so as to be covered with the riding seat 19.

  The vehicle body frame F, a part of the power unit P, the storage box 18 and the fuel tank 20 are covered with a vehicle body cover 21, and a leg shield that covers a leg portion of an occupant sitting on the riding seat 19 from the front. 22, a step floor 23 that is connected to the lower part of the leg shield 22 so that an occupant sitting on the riding seat 19 places his / her foot on the front side of the power unit P, and both sides of the step floor 23. A part of the vehicle body cover 21 is composed of an under cowl 25 that has a pair of left and right skirt portions 24... Hanging downward from the side and covers the lower frame portion 12 b of the main frame 12 from the side and from below.

  In FIG. 2, the power unit P includes a water-cooled internal combustion engine E and a power transmission device (not shown) that transmits the rotational power of the internal combustion engine E to the rear wheel WR. The engine body 26 of the internal combustion engine E is coupled to the crankcase 28 having a crankcase 28 that rotatably supports a crankshaft 27 having an axis along the vehicle width direction and a cylinder axis that is slightly inclined upward. A cylinder block 29, a cylinder head 30 coupled to the cylinder block 29, and a head cover 31 coupled to the cylinder head 30.

  3 and 4 together, the crankcase 28 is formed by fastening a left case half 28L and a right case half 28R, which are divided into left and right parts, with a plurality of bolts 32. An outer rotor 33 is fixed to the right end portion of the crankshaft 27 that passes through the right case half body 28 </ b> R rotatably, and the inner rotor surrounded by the outer rotor 33 so as to form a generator 35 together with the outer rotor 33. The stator 34 is fixed to a support plate 36 fastened to the right crankcase half 28R.

  A radiator 37 is disposed on an axial extension to the right side of the crankshaft 27, and a cooling fan 38 disposed on the inside of the radiator 37 is coaxially interlocked and connected to the crankshaft 27. In this embodiment, the cooling fan 38 is fixed to the outer rotor 33 of the generator 35 with a plurality of bolts 41 so as to be disposed between the radiator 37 and the generator 35.

  A cylindrical shroud 39 that covers the cooling fan 38 and is fixed to the radiator 37 is interposed between the radiator 37 and the right case half 28R of the crankcase 28, and covers the radiator 37 from the outside. A radiator cover 40 is fastened to the shroud 39.

  The radiator 37 includes an upper tank 43 provided with a filler neck 42 extending upward, a lower tank 44 disposed below the upper tank 43, and a core portion 45 provided between the upper tank 43 and the lower tank 44. And a tank cover 46 that covers the upper tank 43 from the outside in the vehicle width direction.

  Referring to FIG. 2, a water pump 47 that is interlocked with the rotation of the crankshaft 27 is disposed on the right side surface of the cylinder head 30 in the engine body 26, and cooling water discharged from the water pump 47. Is introduced into the water jacket (not shown) of the cylinder block 29 via the hose 48. Cooling water discharged from a water jacket (not shown) formed in the cylinder head 30 so as to communicate with the water jacket of the cylinder block 29 is guided to the upper tank 43 of the radiator 37 via a hose 49, Cooling water cooled by circulating the core portion 45 from the upper tank 43 is led out from the lower tank 44 by the hose 50. On the other hand, a thermostat 51 is fixedly disposed on the right side of the cylinder block 29, and the hose 50 that guides cooling water from the lower tank 44 is connected to the thermostat 51. The cooling water led out from the water jacket of the cylinder head 30 can be guided to the thermostat 51 via a bypass hose 52, and the thermostat 51 is connected to the suction pipe 47a of the water pump 47. .

  In FIG. 5, one radiator mounting portion 39 a that protrudes downward is integrally provided at the lower portion of the outer end portion of the shroud 39 along the vehicle width direction, and is integrally provided in the lower tank 44 of the radiator 37. Then, a mounting plate portion 44a that comes into contact with the radiator mounting portion 39a from the outside is fastened to the radiator mounting portion 39a by a screw member 55.

  Further, a pair of radiator mounting portions 39b and 39b separated from the front and rear of the filler neck 46 are integrally provided on the upper portion of the outer end portion along the vehicle width direction of the shroud 39 so as to protrude upward, Mounting plates 43a and 43a that are integrally provided in the upper tank 43 of the radiator 37 and come into contact with the radiator mounting portions 39b from the outside are fastened to the radiator mounting portions 39b by screw members 55. That is, the shroud 39 is fastened to the radiator 37, and when the radiator 37 is fixed to the right case half 28 </ b> R of the crankcase 28, the small unit 56 comprising the shroud 39 and the radiator 37 fixed to the shroud 39. Is fixed to the right case half 28R of the crankcase 28.

  The radiator 37 of the small assembly unit 56 is directly fastened to the right case half 28R of the crankcase 28, and a pair of the upper tank 43 in the radiator 37 is sandwiched between the filler neck 46 from the front and rear. The crankcase mounting portions 43b, 43b are integrally provided so as to protrude sideways, and the crankcase mounting portions 44b, 44b are provided at two positions spaced apart in the front and rear of the lower tank 44 in the radiator 37. So as to project integrally.

  On the other hand, as clearly shown in FIG. 3, the right case half 28R of the crankcase 28 is abutted against a screw shaft portion 57a screwed into the right case half 28R and a right side surface of the right case half 28R. A first flange portion 57b projecting radially outward from the outer end of the screw shaft portion 57a so as to come into contact; a shaft portion 57c extending outwardly coaxially with the outer end of the screw shaft portion 57a; Bolts 57... Having a second flange portion 57 d projecting radially outward from the outer end of the shaft portion 57 c and having a bottomed screw hole 58 in the shaft portion 57 c are provided in the radiator 37. .. Are fixed by screwing into positions corresponding to the crankcase mounting portions 43b... 44b. Moreover, the shaft 57c has an axial length such that the crankcase mounting portions 43b,..., 44b, etc. of the radiator 37 in the state where the shroud 39 is interposed between the second case 57d,. , And bolts 60 inserted through cylindrical collars 59 fitted to the crankcase mounting portions 43b, 44b, are screwed into the screw holes 58, respectively. By tightening, the radiator 37 is directly fastened to the right case half 28 </ b> R of the crankcase 28. In this state, the shroud 39 is arranged so that the end of the shroud 39 on the crankcase 28 side comes into contact with the right case half 28R of the crankcase 28.

  The radiator cover 40 has a cooling air introduction port 61 opened corresponding to the core portion 45 of the radiator 37, and has a plurality of vertically extending blade plates 62 a. The louver 62 to be disposed is provided on the radiator cover 40.

  Referring to FIG. 4, the radiator cover 40 is fastened to an outer end portion of the shroud 39 along the vehicle width direction, and an upper portion of the outer wall portion of the shroud 39 along the vehicle width direction. As shown in FIG. 2, cover mounting portions 39c... Projecting outwardly contact the radiator cover 40 at the lower portion of the shroud 39 and at the lower portion of the outer end portion along the vehicle width direction of the rear wall. Thus, the nuts 63 are attached to the cover mounting portions 39c. On the other hand, the radiator cover 40 is provided with bottomed recesses 64 corresponding to the cover mounting portions 39c, respectively, and the enlarged diameter heads 65a are inserted into the recesses 64, respectively. The radiator cover 40 is fastened to the shroud 39 by screwing and tightening bolts 65 inserted into the radiator cover 40 and the cover attaching portions 39c to the nuts 63.

  Moreover, the radiator cover 40 is formed so as to cover at least the crankcase mounting portions 43b,..., 44b provided on the radiator 37 so as to fasten the radiator 37 to the right case half 28R of the crankcase 28.

  The radiator cover 40 is provided with an engagement portion 66 that can be engaged with and supported by the radiator 37 before the radiator cover 40 is fastened to the shroud 39. Further, the filler neck 42 of the radiator 37 is provided with locking portions 67 that can detachably engage the engaging portion 66.

  The tank cover 46 is fastened to the upper tank 43 provided in the radiator 37 by screw members 53 and 54 at two positions sandwiching the filler neck 42 from the front and rear.

  In FIG. 6, the engaging portion 66 includes a pair of leg portions 66a, 66a that are flexible and extend inward in the vehicle width direction from the upper portion of the radiator cover 40, and the leg portions 66a. Claw portions 66b, 66b respectively formed at the front ends, and both leg portions 66a... Extend inward in the vehicle width direction from the upper portion of the radiator cover 40 so as to sandwich the filler neck 42 from the front and rear.

  On the other hand, the locking portions 67 are projected from the front and rear side surfaces of the filler neck 42 in the front-rear direction, and operate the radiator cover 40 in the engagement operation direction 68 set in the vehicle width direction. Then, the engaging portion 66 is engaged with the radiator 37 such that the leg portions 66a are bent and the claw portions 66b are engaged with the locking portions 67.

  Moreover, the locking portions 67 are provided on the filler neck 42 above the tank cover 46, and the radiator cover 40 is formed so as to cover the leg portions 66a of the engaging portion 66 from the outside. Yes.

  Next, the operation of the first embodiment will be described. The engaging portion 66 that allows the radiator cover 40 to be engaged with and supported by the radiator 37 before the radiator cover 40 is fastened to the shroud 39 is described above. Since it is provided on the radiator cover 40, when the radiator cover 40 is fastened to the shroud 39 with the radiator 37 and the shroud 39 attached to the crankcase 28, the radiator cover 40 can be engaged with and supported by the radiator 37. It is possible to improve the mounting workability of the radiator cover 40. In addition, since the radiator cover 40 is fastened to the shroud 39 and engaged with the radiator 37, the radiator 37 and the radiator cover 40 can be prevented from resonating and the radiator cover 40 can be firmly fixed. It can be.

  Further, since the small unit 56 comprising the shroud 39 and the radiator 37 fixed to the shroud 39 is fixed to the crankcase 28, the assemblability can be improved, and the radiator 37 is directly fastened to the crankcase 28. Therefore, the radiator 37 can be firmly fixed to the crankcase 28.

  Further, since the radiator cover 40 is formed so as to cover at least the crankcase mounting portions 43b... 44b provided in the radiator 37 so as to fasten the radiator 37 to the crankcase 28, the appearance can be improved. Even if the radiator cover 40 is enlarged in order to enhance the appearance, the engagement portion 66 of the radiator cover 40 can be engaged with the radiator 37, so that the degree of freedom of the shape of the radiator cover 40 can be increased.

  Further, since the locking portions 67, which can engage and disengage the engaging portions 66, are provided on the filler neck 42 of the radiator 37, the locking portions 67 are locked at positions where the core portion 45 and other fastening portions of the radiator 37 are avoided. .. Can be provided effectively, and the radiator cover 40 is engaged with the upper portion of the radiator 37 and the lower portion of the radiator cover 40 is fastened to the shroud 39 while reducing the number of fastening points. Can be firmly fixed to the radiator 37 and the shroud 39.

  Further, since the engaging operation direction 68 of the engaging portion 66 with respect to the radiator 37 is set in the vehicle width direction, the radiator cover 40 can be easily engaged with the radiator 37 from the outside.

  In addition, the engaging portion 66 has a pair of leg portions 66a that have flexibility from the radiator cover 40 and extend inward in the vehicle width direction, and extend from the side surface of the filler neck 42 in the vehicle front-rear direction. The claw portions 66b are formed at the tips of the leg portions 66a so that they can be engaged with the locking portions 67, so that the claw portions 66b are bent while the leg portions 66a are bent. The engaging portions 67 can be easily engaged with each other.

  Further, since the radiator cover 40 is formed so as to cover the leg portions 66a from the outside, the leg portions 66a can be protected and the appearance can be enhanced.

  Further, since the locking portions 67 are provided on the filler neck 42 above the tank cover 46, interference of the engaging portion 66 with the tank cover 46 can be avoided.

  The second embodiment of the present invention will be described with reference to FIG. 7, but the parts corresponding to those of the first embodiment are only given the same reference numerals and shown in detail. Omitted.

  A first mount rubber 71 is interposed between a crankcase mounting portion 43b provided in the upper tank 43 of the radiator 37 and a second flange portion 57d of the bolt 57, and is inserted into the crankcase mounting portion 43b to be bolted 57. A second mount rubber 73 is interposed between a washer 72 and a crankcase mounting portion 43b for abutting and engaging the enlarged diameter head 60a of the bolt 60 screwed into the screw hole 58, and By tightening the bolt 60, the upper portion of the radiator 37 is directly fastened to the right case half 28 </ b> R of the crankcase 28 via the first and second mount rubbers 71 and 73.

  In addition, the crankcase mounting portion 44b (see the first embodiment) provided in the lower tank 44 of the radiator 37 is also the right case half of the crankcase 28 via the mounting rubber in the same manner as the crankcase mounting portion 43b described above. Fastened directly to the body 28R.

  The same effect as that of the first embodiment can also be achieved by the second embodiment.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

27 ... crankshaft 28 ... crankcase 37 ... radiator 38 ... cooling fan 39 ... shroud 40 ... radiator cover 42 ... filler neck 43 ... upper tanks 43b, 44b ..Crankcase mounting part 44 ... Lower tank 45 ... Core part 46 ... Tank cover 56 ... Small unit 66 ... engaging part 66a ... leg part 66b ... claw part 67 ... Locking portion 68 ... Engagement operation direction E ... Internal combustion engine

Claims (9)

  A radiator (37) is disposed on an axial extension of a crankshaft (27) that is rotatably supported by a crankcase (28) of a water-cooled internal combustion engine (E) and extends in the vehicle width direction, and the crankshaft (27) A cooling fan (38) that is coaxially coupled and connected to the radiator (37) is disposed inside the radiator (37), and covers the cooling fan (38) between the radiator (37) and the crankcase (28). A saddle-ride type vehicle in which a cylindrical shroud (39) fixed to the radiator (37) is interposed, and a radiator cover (40) covering the radiator (37) from the outside is fastened to the shroud (39). In the cooling apparatus for an internal combustion engine for a vehicle, the radiator cover (40) is attached to the radiator cover (40) before the radiator cover (40) is fastened to the shroud (39). Eta (37) in engagement with the cooling device can and the engagement portion (66), characterized in that is provided a saddle-ride type vehicle internal combustion engine that is supported on the radiator (37).   The kite according to claim 1, characterized in that a small unit (56) comprising the shroud (39) and the radiator (37) fixed to the shroud (39) is fixed to the crankcase (28). Cooling device for internal combustion engine for riding type vehicle.   The cooling apparatus for an internal combustion engine for a saddle-ride type vehicle according to claim 1 or 2, wherein the radiator (37) is directly fastened to the crankcase (28).   The radiator cover (40) is formed so as to cover at least a crankcase mounting portion (43b, 44b) provided on the radiator (37) so as to fasten the radiator (37) to the crankcase (28). The internal combustion engine cooling system for a saddle-ride type vehicle according to claim 3.   The locking portion (67) capable of detachably engaging the engaging portion (66) is provided on the filler neck (42) of the radiator (37). A cooling apparatus for an internal combustion engine for a saddle-ride type vehicle according to claim 1.   6. The cooling apparatus for an internal combustion engine for a saddle-ride type vehicle according to claim 5, wherein an engaging operation direction (68) of the engaging portion (66) with respect to the radiator (37) is set in a vehicle width direction. .   The engagement portion (66) has a leg portion (66a) that is flexible and extends inward in the vehicle width direction from the radiator cover (40), and the filler neck that extends in the front-rear direction of the vehicle. It comprises a claw portion (66b) formed at the tip of the leg portion (66a) so as to be able to engage with the locking portion (67) protruding from the side surface of (42). Item 7. The cooling apparatus for an internal combustion engine for a saddle-ride type vehicle according to Item 5 or 6.   The cooling apparatus for an internal combustion engine for a saddle type vehicle according to claim 7, wherein the radiator cover (40) is formed so as to cover the leg portion (66a) from the outside.   The radiator (37) includes an upper tank (43) provided with a filler neck (42) extending upward, a lower tank (44) disposed below the upper tank (43), and the upper tank (43). And a core portion (45) provided between the lower tank (44) and a tank cover (46) that covers the upper tank (43) from the outside in the vehicle width direction, the locking portion (67) being The cooling device for an internal combustion engine for a saddle-ride type vehicle according to any one of claims 5 to 8, wherein the cooling device is provided on the filler neck (42) above the tank cover (46).

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