JPH03136986A - Radiator unit of motorcycle - Google Patents

Abstract

PURPOSE:To obtain a radiator unit of a motorcycle which can be installed easily to the front part of a car body by forming longitudinally elongated installing windows on the front edges of the inner surfaces of front covers, inserting both sides of a radiator unit to the installing windows, and arranging the radiator between leg shields. CONSTITUTION:Each of front cover 5 and leg shield 11 is formed in a hollow with a thickness, and each longitudinally elongated installing window 31 is provided on the upper part of a front edge on its inner surface. By installing left side and right side front covers 5, the installing windows 31 are opposed laterally to each other and by inserting both side edges of a radiator unit 32 into the installing windows 31, and fixing them with screws or the like adequately, the radiator unit 32 can be held between the leg shields 11. By a simple structure only for forming the installing windows 31 on the opposite parts of left and right leg shields 11, the radiator unit 32 can be arranged in an adequate position in its adequate posture without adding any special device, and good productivity, good assembly efficiency, and a low cost can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a radiator device for a two-wheeled motor vehicle, which is disposed behind the front wheels and over the entire surface of the vehicle body.

(Conventional technology) Motorcycles equipped with water-cooled engines require the installation of a radiator device to cool the cooling water.The radiator unit is installed behind the front wheels, on the entire surface of the vehicle body, in consideration of cooling efficiency. It is generally placed in the section. In this case, the radiator unit is also generally attached to a down tube that is arranged rearward and downward from the head pipe.

However, depending on the frame configuration, it may not be placed on the downtube or there may not be enough space, making it difficult to attach.

(Problems to be Solved by the Invention) This invention was made in order to solve these problems, and uses a leg shield installed at the front of the vehicle body to protect the vehicle body regardless of the presence or absence of a down tube. It is an object of the present invention to provide a radiator device for a two-wheeled motor vehicle that can be easily attached to the front part.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve such an object, the radiator device for a motorcycle of the present invention is provided at the rear of the head pipe in a motorcycle equipped with a water-cooled engine in the center of the vehicle body. The fuel tank or article storage box is placed there, and the left and right front covers are integrally molded with leg shields on the front edges, extending from the lower edges of both sides to both sides of the engine unit. By forming a vertically elongated mounting window in the section and inserting both sides of the radiator unit into the mounting window, the radiator unit is arranged between the leg shields.

(Function) With this configuration, the radiator unit is placed at the front of the vehicle body behind the front wheels at the same time as the leg shield is installed, and in combination with being placed between the leg shields, It is possible to effectively conduct the running wind.

The cooling air that has passed through the radiator is discharged through an outlet such as a louver in the front cover.

The radiator unit can be placed in an efficient position without the need for a special pedestal in frames that do not have a down tube, or those that have limited mounting space.

(Example) DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings showing embodiments of the present invention will be explained below.

Figures 2 and 3 show automatic 2 using the frame of this invention.
FIG. 2 is a side view and a plan view of a wheeled vehicle.

A front wheel 1 that is steered by a steering wheel 3 and a rear wheel 2 that is driven by an engine unit 4 mounted in the center are arranged in the front and rear. Cover 5 and rear trunk cover 6
It has a covered appearance.

That is, behind the head pipe 7 that supports the front wheel 1,
8. Store items horizontally in sequential order. Sheet 9. The pillion seats 10 are lined up, and a front cover 5 with a leg shield 11 formed on the front edge covers from the lower edge of the front half of the article storage box 8 to both sides of the front part of the lower engine unit 4, and is continuous with the front cover 5. The rear half of the article storage box 8, the seat 9. A rear trunk cover 6 that bulges out on both sides covers from the lower edge of the pillion seat 10 to both sides of the rear part of the engine unit 4 and the upper half of the rear wheel 2.

The upper half of the front wheel 1 is also covered by a front fender 12, and only a portion of the lower half of the front and rear wheels 1.2 and a portion of the engine unit 4 are exposed when viewed from the side. The center portion of the handle 3 is covered with a headlamp housing 15 incorporating a headlamp 13 and meters 14.

Note that 16 is a footrest attached to the engine unit 4, 17 is a trunk lid provided on the rear trunk cover, and 18 is a retractable pillion footrest.

The internal frame structure is shown in FIGS. 4 and 5.

The front part of the frame that supports the head pipe 7 is made up of upper tubes 19 that are stacked in two layers, upper and lower, with an interval between them and gently slope downward. It consists of an under tube 20.

The upper tube 19 is a pair of left and right tubes whose front end portions are curved into a U-shape and are continuous, and extend rearward for a long time, forming a narrow portion 21 where both tubes approach each other at the center. Similarly, the under tube 20 is a pair of continuous left and right tubes whose front ends are curved into a U-shape, and extends rearward to the vicinity of the narrow portion 21 . Both tubes 19,20 are connected at appropriate points by longitudinal bridge tubes 22. The tubes 19, 20 are also connected on both sides by transverse bridge tubes 23.

Upper tube 19. The front end of the under tube 20 is connected to the upper and lower parts of the head pipe 7 via a connecting pipe 24, and the bridge tube 23 connection part of the narrow part 21 of the upper tube 19 and the rear end of the under tube 20 form a center tube that hangs downward. 25.

Further, the rear end of the upper tube 19 and the lower end of the center tube 25 are connected by a rear tube 26 that slopes forward and downward, and the lower front end of the rear tube 26 is further extended and located at the rear lower part of the engine unit 4. .

The article storage box 8 is placed at the front of the upper tube 19 so as to cover it. When viewed from the top, the article storage box 8 has a narrow rear portion to accommodate a knee grip, and the narrow portion 21 corresponds to the shape. The U-shaped curvature at the front end creates sufficient space within which the box can be placed.

A 9° pillion seat 10 is mounted on the rear half of the upper tube 19.

An inverted triangular engine mount member 27 having a pipe structure that hangs downward is fixed to the under tube 20, and the front part of the engine unit 4 is suspended from the lower end of the engine mount member 27. The engine unit 4 is further fixed to the rear end of the under tube 20, the front lower ends of the center tube 25, the rear tube 26, and the like.

A triangular reinforcing plate 28 is welded to the front of the intersection of the center tube 25 and the rear tube 26, and pivotally supports the front end of the rear swing arm 29. The rear wheel 2 is pivotally supported by the rear end of this rear swing arm 29, and is supported by a cushion unit 3.
It is buffered and suspended by 0. The upper end of the cushion unit 30 is supported by a bridge tube 23 spanning the narrow portion 21 of the upper tube 19 via a bracket.

As shown in FIGS. 1 and 6, the front cover 5 has an upper edge shaped so as not to leave a gap with the outer lower edge of the article storage box 8, and is attached along the under tube 20. Can be worn. Leg shield 11 connected to the front edge
The upper end thereof is the head pipe 7, and the lower end thereof extends to the side with a height and width that is equal to or less than the footrest 16. front cover 5
The leg shield 11 is formed thick and hollow.

A vertically elongated mounting window 31 is provided at the upper part of the front edge of the inner surface. When the left and right front covers 5 are attached, the mounting windows 31 face each other on the left and right, and by inserting both side edges of the radiator unit 32 into the mounting windows 31 and securing them with appropriate screws, the radiator Unit 32 is leg shield 1
1. A wind guide window 33 is continuously provided behind the mounting window 31, and a looper 34 is arranged on the outer surface of the window 33.

The rear trunk cover 6 is divided into left and right halves, and covers the rear lower edge of the article storage box 8 and the seat 9. The upper edge shape is set so as not to create a gap between the outer lower edge of the pillion seat 10, the rear end of the upper tube 19, the under tube 20, the center tube 25. It is attached to and integrated with the rear tube 26 from the left and right sides. A concave rear trunk 35 is formed on the side of the rear wheel 2, and the trunk lid 17 is attached to the outer surface of the rear trunk 35.

As shown in FIG. 8, the trunk lid 17 has a lower edge pivotally supported on the back surface of the rear trunk cover 6 by a hinge 36.
It opens and closes so that it falls to the side.

Further, a concave portion 37 is formed at the lower edge of the rear trunk cover 6, and the pillion footrest 18 is accommodated so as to be flush with the rear trunk cover 6. As shown in FIG. 7, the pillion footrest 18 has its lower edge pivotally supported by a support bracket 38, and is configured to horizontally open outward when necessary. The support bracket 38 is fixed to the rear end of a bracket tube 39 connected to the rear tube 26 and extending rearward and laterally.

Further, the front fender 12 is divided into front and rear parts, a front part 12a and a rear part 12b, each having a semicircular cut so that a pair of left and right through holes 4o are formed in the center of the upper surface when the front fender 12 is assembled. A notch is provided at the dividing edge. First half 12a.

The rear part 12b is placed over the front wheel 1 from the front and back, and the front fork 41 is passed through the through hole 40 and combined, so that the upper half part of the front wheel 1 and the front brake caliper 42 are covered.

In this way, the upper tubes 19 are arranged in two stages, upper and lower.
The front half of the frame is constructed by connecting the under tube 20 and the down tube, and sufficient rigidity can be ensured to suspend the engine unit 4 by omitting the down tube, which is also useful for weight reduction.

Even without a down tube, the radiator unit 32 can be skillfully assembled to the front parts of the left and right front covers 5.

The running air is collected by the leg shield 11 and efficiently passes through the radiator unit 32, and the cooling air that has passed through the front cover 5 passes through the looper 34 and is discharged to the outside. Therefore, back pressure is small, and cooling performance is improved in this aspect as well.

Due to the simple structure of just forming the mounting windows 31 on the opposing parts of the left and right leg shields 11, the radiator unit 32 can be placed in the appropriate location and in the appropriate posture without adding any special equipment. The two-way assembly has advantages such as good performance and low cost.

〔Effect of the invention〕

As explained above, the radiator device for a motorcycle according to the present invention has mounting windows arranged facing each other on the inner surfaces of the left and right front covers integrally molded with leg shields, and the mounting windows straddling the mounting windows. This allows the radiator unit to be attached to the vehicle, making it possible to place a highly efficient radiator unit on the front of the vehicle without the need for a down tube or other special equipment, increasing the productivity of this type of radiator unit. It has the effect of improving and reducing costs.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a radiator device according to an embodiment of the present invention, Fig. 2 is a side view of a motorcycle equipped with the radiator device of Fig. 1, Fig. 3 is a plan view, and Fig. 4 is a side view of the frame of the motorcycle shown in Figure 2, and Figure 5 is a plan view of the same.
Figure 6 is a plan cross-sectional view of the front cover and rear trunk cover taken along arrow C-C in Figure 1, and Figure 7 is a cross-sectional view of the front cover and rear trunk cover in Figure 1 C-C.
FIG. 8 is an enlarged cross-sectional view of the main part of the trunk lid taken along line CC in FIG. 1; 1...front wheel, 2...rear wheel, 3...handle, 4...
...Engine unit, 5...Front cover, 6.
・・Rear trunk cover, 7・Head pipe, 8・
... Goods storage box, 9 ... Seat, 10 ... Pillion seat, 11 ... Leg shield, 12 ...
Front fender, 17...Trunk lid, 18.
... Pillion footrest, 19... Upper tube, 20... Under tube, 21... Narrow part,
22... Vertical bridge tube, 23... Horizontal bridge tube, 31... Mounting window, 32... Radiator unit, 34... Roots

Claims (1)

[Claims] In a motorcycle with a water-cooled engine mounted in the center of the vehicle body, the fuel tank or goods storage box is placed behind the head pipe, and a leg shield is placed on the front edge from the lower edge on both sides to both sides of the engine unit. In addition to covering the integrally molded left and right front covers, a vertically long mounting window is formed on the front edge of the inside surface of the front cover, and by inserting both sides of the radiator unit into the mounting windows, the radiator unit can be installed. A radiator device for a two-wheeled motor vehicle, characterized in that it is arranged between leg shields.