JP2002129960A - Radiator device for vehicles - Google Patents

Abstract

(57) [Summary] A radiator mounted on a vehicle having a water supply cap provided at an upper portion thereof, which can be opened and closed by a rotation operation, and a radiator cover attached to the radiator so as to cover the radiator from the outside. In a vehicle radiator device provided with the water supply cap, it is possible to maintain the water supply cap in its closed position while avoiding an increase in the number of parts and improving assemblability. A position restricting portion (74a) that engages with a water supply cap (88) in a closed position to enable the radiator cover (74) to be attached to the radiator (72) and prevents rotation of the water supply cap (88) to an open position. The radiator cover 74 is provided integrally with the radiator cover 74 so as to cover the radiator cover 88.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator mounted on a vehicle with a water supply cap provided at the top thereof, which can be opened and closed by a rotating operation, and a radiator cover which is attached to the radiator so as to cover the radiator from the outside. And a vehicle radiator device comprising:

[0002]

2. Description of the Related Art Conventionally, such an apparatus is disclosed in, for example,
It is already known in JP-A-3-106320.

[0003]

By the way, the water supply cap can be opened and closed by rotating the water supply cap. In the above-mentioned conventional water supply cap, the water supply cap is covered by a grill fastened to a radiator. However, no attempt has been made to maintain the closed position of the water supply cap, although the device is not operated by mischief. When the grill is covered with the water supply cap, it is not possible to determine whether the water supply cap is in the closed position or the open position.Therefore, it is necessary to check the position of the water supply cap when assembling the grill. This complicates the assembly work.

The present invention has been made in view of the above circumstances, and has been made to avoid an increase in the number of parts, improve assemblability, and maintain a water supply cap at a closed position thereof. It is intended to provide a device.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention according to claim 1 is provided with a radiator mounted on a vehicle having a water supply cap provided at an upper portion thereof which can be opened and closed by a rotating operation, and the radiator. A radiator device for a vehicle, comprising: a radiator cover attached to the radiator so as to cover the radiator from the outside. The radiator cover is provided with a position regulating portion for preventing the rotation to the open position, and is provided integrally with the radiator cover so as to cover the water supply cap.

According to such a configuration, when the radiator cover is mounted on the radiator, when the water supply cap is in the closed position, the radiator cover can be mounted on the radiator such that the position regulating portion is engaged with the water supply cap. it can. Therefore, it is not necessary to perform an operation for specifically confirming that the water supply cap is at the closed position, and it is possible to confirm the position of the water supply cap only by attaching the radiator cover to the radiator, thereby improving the assemblability. In addition, since the position restricting portion of the radiator cover is engaged with the water supply cap, the water supply cap is prevented from rotating from the closed position to the open position, so that the water supply cap can be closed at the closed position while avoiding an increase in the number of parts. Can be maintained.

[0007] The invention according to claim 2 provides the above-described claim 1.
In addition to the configuration of the invention described in the above, the position regulating portion is provided with a notch that exposes a part of the water supply cap to the outside. According to such a configuration, the presence of the water supply cap is determined by the radiator cover. Can be easily checked from outside.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

1 to 8 show an embodiment of the present invention. FIG. 1 is an overall side view of a scooter type motorcycle, and FIG.
3 is an enlarged view of a main part of FIG. 1, FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, FIG. 4 is a side view taken along line 4-4 of FIG. 3, and FIG. 6, FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 4, FIG. 7 is a plan view of FIG.
FIG. 3 is a perspective view of a radiator and a radiator cover.

Referring first to FIGS. 1 and 2, a vehicle frame F of a scooter type motorcycle V having a front wheel Wf steered by a steering wheel 11 and a rear wheel Wr driven by a swing type power unit P is shown in FIG. , A front frame 12, a center frame 13, and a rear frame 14. The front frame 12 is made of an aluminum alloy casting integrally provided with a head pipe 12a, a down tube 12b, and a step floor support portion 12c. The center frame 13 on which the power unit P is supported so as to be able to swing up and down via a pivot shaft 15 is made of an aluminum alloy casting, and is connected to the rear end of the front frame 12. A rear frame 14 extending rearward and upward from the power unit P is formed of an annular pipe material, and a fuel tank 16 is supported on an upper surface thereof. A helmet case 17 is supported on the upper surface of the center frame 13, and the helmet case 17 and the fuel tank 16 are openably and closably covered by a cover 19 integrally having a seat 18.

The power unit P comprises a water-cooled, single-cylinder, four-stroke engine E and a belt-type continuously variable transmission T extending rearward from the left side of the engine E to the rear of the vehicle. It is connected to the rear end of the center frame 13 via the cushion 20. An air cleaner 21 is supported on an upper surface of the continuously variable transmission T, a muffler 22 is supported on a right side surface of the continuously variable transmission T, and a main stand 23 capable of standing and falling is supported on a lower surface of the engine E.

3 to 5, an engine body 25 of an engine E includes a first engine block 32 and a second engine block 33 divided by a split surface 30 extending vertically along a crankshaft 31. The first engine block 32 integrally includes a cylinder block 32 a provided with a cylinder bore 41 and a crankcase half portion 32 b constituting a crankcase together with the second engine block 33. The head 34 is connected, and a head cover 35 is connected to the front end of the cylinder head 34.

The engine body 25 has a body frame F such that the axis L of the cylinder bore 41 is slightly raised and substantially along the front-rear direction of the body frame F.
A bracket 27 provided on an upper part of the first engine block 32 is swingably supported via a mounting rubber 28 on a pivot shaft 15 fixed to the center frame 13 of the body frame F. You.

The belt-type continuously variable transmission T includes a right casing 37 and a left casing 38 that are connected to each other. The right front face of the right casing 37 has first and second engine blocks 32 and 33. To the left side. Further, a reduction gear casing 39 is connected to a rear right side surface of the right casing 37.

A piston 42 slidably fitted inside a cylinder bore 41 provided in the first engine block 32.
Is connected to the crankshaft 31 via a connecting rod 43. A camshaft 44 is rotatably supported by the cylinder head 34, and an intake valve and an exhaust valve (not shown) provided on the cylinder head 34 are opened and closed by the camshaft 44.
Chain passage 4 provided in first engine block 32
A timing chain 45 is housed in 0, and the timing chain 45 is wound around a driving sprocket 46 provided on the crankshaft 31 and a driven sprocket 47 provided on the camshaft 44. Thus, the camshaft 44 makes one rotation for every two rotations of the crankshaft 31.

A drive pulley 54 is provided at the left end of the crankshaft 31 projecting into the right casing 37 and the left casing 38. The drive pulley 54 includes a fixed pulley half 55 fixed to the crankshaft 31.
And a movable pulley half 56 that can approach and separate from the fixed pulley half 55. The movable pulley half 56 moves radially outward in accordance with an increase in the rotation speed of the crankshaft 31. The moving centrifugal weight 57 is urged in a direction approaching the fixed pulley half 55.

A driven pulley 59 provided on the output shaft 58 supported between the rear portion of the right casing 37 and the reduction gear casing 39 is fixed to a fixed pulley half 60 supported on the output shaft 58 so as to be relatively rotatable. A movable pulley half 61 that can approach and separate from the side pulley half 60 is provided. The movable pulley half 61 is urged toward the fixed pulley half 60 by a spring 62. A starting clutch 63 is provided between the fixed pulley half 60 and the output shaft 58. Then, the driving pulley 54 and the driven pulley 59
An endless V-belt 64 is wound therebetween.

An intermediate shaft 65 and an axle 66 parallel to the output shaft 58 are supported between the right casing 37 and the reduction gear casing 39. A reduction gear train 67 is provided between the output shaft 58, the intermediate shaft 65 and the axle 66. Provided. Then, the axle 6 protruding rightward through the reduction gear casing 39.
The rear wheel Wr is provided at the right end of the rear wheel 6.

The rotational power of the crankshaft 31 is transmitted to the driving pulley 54, and the driving pulley 54
The power is transmitted to the rear wheel Wr via the belt 64, the driven pulley 59, the starting clutch 63, and the reduction gear train 67.

When the engine E rotates at a low speed, the centrifugal force acting on the centrifugal weight 57 of the driving pulley 54 is small, and the groove width between the fixed pulley half 60 and the movable pulley half 61 is controlled by the spring 62 of the driven pulley 59. Is reduced, and the speed ratio is LOW. When the rotation speed of the crankshaft 31 increases from this state, the centrifugal force acting on the centrifugal weight 57 increases, and the groove width between the fixed pulley half 55 and the movable pulley half 56 of the drive pulley 54 decreases, Accordingly, the groove width between the fixed pulley half 60 and the movable pulley half 61 of the driven pulley 59 increases, so that the speed ratio changes steplessly from LOW to TOP.

Referring also to FIG. 6, a rotor 69 is fixed to the right side of the crankshaft 31.
And a stator 70 which constitutes an alternator 68 in cooperation with the
Are surrounded by the rotor 69 so that the first and second
It is fixed to the engine blocks 32 and 33. A cooling fan 71 is fixed to the right end of the crankshaft 31 outside of the AC generator 68, and the radiator 72 is sandwiched between the cooling fan 71 and the AC generator 68.
Is disposed, and the support case 7 provided in the radiator 72 is provided.
3 is fixed to the first and second engine blocks 32 and 33 so as to surround the cooling fan 71, and the radiator 72
Is covered from outside with a radiator cover 74 made of synthetic resin, which is fastened to the support case 73 of the radiator 72.

Referring to FIGS. 7 and 8, a louver 75 for introducing air from outside is provided on the outer surface of the radiator cover 74. Are provided with a plurality of outlets 76. When the cooling fan 71 operates, the louvers 7
The air introduced from 5 passes through the radiator 72 to cool the radiator 72 and is discharged to the outside through the outlets 76.

The radiator 72 includes an upper tank 77, a lower tank 78, a cooling core 79 connecting the upper and lower tanks 77, 78, and the support case 73. The lower tanks 77 and 78 are fixed. Thus, the cooling air introduced from the louver 75 to the radiator 72 side passes through the cooling core 79 to cool the cooling water in the radiator 72.

The radiator 72 is mounted on the engine body 25.
Constitutes a part of a cooling device 83 capable of circulating cooling water of a water jacket 82 provided in the cylinder block 32a of the first engine block 32 and the cylinder head 34 in the first embodiment. A water pump 84 for supplying cooling water to the water jacket 82; a radiator 72 interposed between the water jacket 82 and a suction port of the water pump 84; and a cooling water from the water jacket 82 bypassing the radiator 72. To the water pump 84 and the water jacket 82
And a thermostat 85 that switches a state in which the cooling water is returned to the water pump 84 via the radiator 72 according to the temperature of the cooling water.

A thermostat case 8 containing a thermostat 85 therein is provided on the right side of the cylinder head 34.
The water pump 84 provided at the right end of the camshaft 44 is housed in a space surrounded by the cylinder head 34 and the thermostat case 86.

A water supply pipe 87 extending upward is integrally provided at one end (rear end in this embodiment) of the upper tank 72 along the front-rear direction of the body frame F, and is provided at an upper end of the water supply pipe 87. Is provided with a water supply cap 88 which is opened and closed by a rotation operation. The other end (the front end in this embodiment) of the lower tank 78 along the front-rear direction of the body frame F.
Is integrally provided with a connecting pipe 89 protruding forward.

The radiator 72 is mounted on the first and first engine blocks 32 and 33 of the engine body 25 in a posture inclined by an angle α with respect to the axis L of the cylinder bore 41 provided in the engine body 25. When the engine body 25 is mounted on the vehicle body frame F, the radiator 72 is inclined forward by an angle β with respect to the horizontal plane, and the water supply cap 88 is disposed at the uppermost position in the cooling device 83 and the connection pipe 89 Is disposed at the lowest position in the cooling device 83.

As described above, the radiator 72 is inclined at an angle α with respect to the axis L of the cylinder bore 41, so that the radiator 72 is supported so as to avoid the pivot shaft 25 for supporting the engine body 25 on the body frame F.
Can be arranged, and the exhaust pipe 90 connected to the exhaust port of the cylinder head 32 is connected to the radiator 7.
2, it is possible to increase the degree of freedom in arranging the exhaust pipe 90 by securing a space arranged behind the rear part.

The connecting pipe 89 of the radiator 72 is connected to one end of a first conduit 91 such as a rubber hose for guiding the cooling water of the radiator 72 to the thermostat 85 side, and the other end of the first conduit 91 is connected to the thermostat case 86. Is done.

The radiator 72 is disposed at a position where at least a part (the front part in this embodiment) of the upper tank 77 overlaps the cylinder block 32a of the engine body 25 in a side view. In a range where the block 32a overlaps in the side view, a second conduit 92 connected to the upper end of the water jacket 25 and having one end connected to the cylinder block 32a extends substantially horizontally in the width direction of the motorcycle. The other end of the second conduit 92 is connected to the front of the upper tank 77.

One end of a third conduit 93 such as a rubber hose for guiding cooling water from the water pump 84 is connected to a thermostat case 86, and the other end of the third conduit 93 communicates with a lower portion of the water jacket 82. First
It is connected to a connection pipe 94 provided in the cylinder block 32a of the engine block 32.

The carburetor 95 connected to the intake port of the cylinder head 32 is connected to a pipe (not shown) for guiding cooling water from the water jacket 82 to heat the carburetor 95. And a fourth conduit 9 such as a rubber hose for guiding the cooling water after heating the vaporizer 95 to the thermostat 85.
6 is connected to the thermostat case 86.

A fifth conduit 97 such as a rubber hose for extracting air from the water pump 84 is connected to the upper part of the thermostat case 86.
And a conduit (not shown) connected to the upper part of the cylinder block 32a for bleeding air from the upper part in the water jacket 82 is commonly connected to a sixth conduit 98 such as a rubber hose. The conduit 98 is the radiator 7
2 is connected to the upper rear side of the upper tank 77.

Further, one end of a seventh conduit 100 such as a rubber hose is connected to the water supply pipe 87.
Is connected to a reservoir (not shown) which is open to the atmosphere and is arranged separately from the radiator 72. When the cooling water in the radiator 72 expands due to high temperature, excess cooling water overflows into the reservoir, and the radiator 7
When the temperature of the cooling water in 2 becomes low, the cooling water is returned from the reservoir to the radiator 72. By the flow of the cooling water between the radiator 72 and the reservoir, the air accumulated in the water supply pipe 87 is discharged to the reservoir. That is, even during the operation of the engine E, the air is efficiently removed from the cooling device 83.

In such a cooling device 83, when the warm-up operation of the engine E is completed, the camshaft 44
Cooling water discharged from the water pump 84 driven by the thermostat case 86 and the third conduit 93
Through the first engine block 32 and the water jacket 82 in the cylinder head 34, and after cooling the engine E while passing through the water jacket 82, the upper tank 77 of the radiator 72 through the second conduit 92.
Supplied to And cooling core 79 from upper tank 77
The cooling water whose temperature has been lowered while passing through the radiator 72 through the lower tank 78 through the first conduit 9
1 and is returned to the water pump 84 via the thermostat 85. On the other hand, when the engine E is warming up and the temperature of the cooling water is low, the thermostat 85 operates so that the cooling water circulates around the radiator 72, and the cooling water does not pass through the water jacket without passing through the radiator 72. The temperature circulates through the vaporizer 82, the vaporizer 95 and the water pump 84 to quickly rise.

Paying attention to FIGS. 7 and 8, the radiator 7
2 so as to cover the support case 72 of the radiator 72.
The radiator cover 74, which is fastened to the radiator cover 74, engages with the water supply cap 88 in the closed position to enable the radiator cover 74 to be attached to the radiator 72 and to prevent the water supply cap 88 from rotating to the open position. Part 7
4a is provided integrally so as to cover the water supply cap 88. Moreover, the water supply cap 8 is provided in the position regulating portion 74a.
A notch 99 is provided for exposing a part of 8 to the outside.

Next, the operation of this embodiment will be described. In the radiator 72 which constitutes a part of a cooling device 83 which can circulate the cooling water of a water jacket 82 provided in the engine body 25, the radiator 72 extends in the front-rear direction of the body frame F. A water supply pipe 87 extending upward is integrally provided at a rear end of the upper tank 77 along the upper tank 77, and a water supply cap 88 is detachably attached to an upper end of the water supply pipe 87. The radiator 72 is attached to the engine body 25 in a posture inclined at an angle β with respect to a horizontal plane so as to be at the uppermost position in the device 83. That is, the radiator 72 having a general shape including the upper and lower tanks 77 and 78 and the cooling core 79 connecting between the tanks 77 and 78 is tilted forward with respect to the horizontal plane, so that the rear of the upper tank 77 is formed. The cap 88 attached to the upper end of the water supply pipe 87 provided at the end is the cooling device 8.
3 is located at the uppermost position.

Therefore, the radiator 72 can be formed in a special shape or connected to the radiator 72 so that the radiator 72
By avoiding an increase in cost due to providing a water supply cap in a tank disposed separately from the water supply pipe 87, a head difference in the cooling device 83 during water injection from the water supply pipe 87 is made relatively large, and Air bleeding property and water injection can be improved.

At the front end of the lower tank 78 along the front-rear direction of the body frame F, there is provided a connecting pipe 89 for connecting a first conduit 91 for guiding the cooling water from the radiator 72 to the thermostat 85. Is the cooling device 8
The radiator 72 is tilted with respect to the horizontal plane so that the radiator 72 is positioned at the lowermost position in FIG.
It is possible to satisfactorily extract air from the lower portion in the cooling device 83 without increasing the length of the cooling core 79 in
Water injection is further improved.

A radiator 72 is arranged at a position where at least a part of the upper tank 77 overlaps the cylinder block 32a in a side view. The upper tank 77 and the cylinder block 32a are arranged in a range where the upper tank 77 and the cylinder block 32a overlap in a side view. The end of the second conduit 92 extending to the water jacket 82 is connected to the cylinder block 32.
a and the other end of the second conduit 92 is connected to the upper tank 77, so that the radiator 72
Also, the second conduit 92 connecting between the cylinder blocks 32a can be shortened, and the cooling water circulation circuit in the cooling device 83 can be made compact.

Further, a position restricting portion 74a which engages with the water supply cap 88 in the closed position to enable the radiator cover 74 to be attached to the radiator 72 and prevents the water supply cap 88 from rotating to the open position is provided with a water supply cap. The radiator cover 74 is provided integrally with the radiator cover 74 so as to cover the radiator cover 88.
When the water supply cap 88 is at the closed position, the radiator cover 74 is engaged with the water supply cap 88 so that the radiator cover 74 is
Can be mounted on Therefore, the water supply cap 88
It is not necessary to perform a special operation of confirming that the water supply cap is in the closed position, and the position of the water supply cap 88 can be confirmed only by the operation of attaching the radiator cover 74 to the radiator 72, so that the assemblability can be improved.

Further, since the position restricting portion 74a of the radiator cover 74 is engaged with the water supply cap 88, the water supply cap 88 is prevented from rotating from the closed position to the open position, thereby avoiding an increase in the number of parts. The water supply cap 88 can be maintained in its closed position.

The position restricting portion 74a is provided with a notch 99 for exposing a part of the water supply cap 88 to the outside, so that the presence of the water supply cap 88 can be easily confirmed from outside the radiator cover 74. .

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

For example, in the above embodiment, the case where the present invention is applied to the motorcycle V has been described. However, the present invention can be applied to other vehicles such as a motorcycle.

[0046]

As described above, according to the first aspect of the present invention, the position of the water supply cap can be checked only by attaching the radiator cover to the radiator, so that the assemblability can be improved. Moreover, by mounting the radiator cover on the radiator, the water supply cap is prevented from rotating from the closed position to the open position, and the water supply cap can be maintained in the closed position while avoiding an increase in the number of parts. .

According to the second aspect of the present invention, the presence of the water supply cap can be easily confirmed from outside the radiator cover.

[Brief description of the drawings]

FIG. 1 is an overall side view of a scooter type motorcycle.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a side view taken along line 4-4 of FIG. 3;

FIG. 5 is a side view corresponding to FIG. 4 with the radiator cover removed.

FIG. 6 is a sectional view taken along line 6-6 of FIG. 4;

FIG. 7 is a plan view as viewed in the direction of arrow 7 in FIG. 6;

FIG. 8 is a perspective view of a radiator and a radiator cover.

[Explanation of symbols]

 72 ... radiator 74 ... radiator cover 74a ... position regulating part 88 ... water supply cap 99 ... notch

Claims (2)

[Claims] 1. A radiator (72) mounted on a vehicle having a water supply cap (88) which can be opened and closed by a rotating operation, and a radiator (72) which covers the radiator (72) from the outside. And a radiator cover (74) mounted on the water supply cap (88) in the closed position to enable the radiator cover (74) to be mounted on the radiator (72). A position regulating portion (74a) for preventing the water supply cap (88) from rotating to the open position is provided integrally with the radiator cover (74) so as to cover the water supply cap (88). Radiator device for vehicles. 2. A notch (9) for exposing a part of the water supply cap (88) to the outside, in the position regulating part (74a).
The radiator device for a vehicle according to claim 1, wherein (9) is provided.