JPS6313880A - Radiator mounting structure of saddling type car for travelling on uneven ground - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a radiator mounting structure for a straddle-type vehicle for traveling on rough terrain, and in particular, a radiator protection function that can prevent external force from acting on the radiator in the event of an overturn. Regarding the mounting structure with added.

[Conventional technology]

Generally, straddle-type vehicles for traveling on rough terrain are equipped with wide ultra-low-pressure tires (so-called balloon tires) on the front, rear, left, and right sides of the body frame, and the steering wheel is installed vertically between the left and right front wheels. The front wheels are steered by a shaft, and the rear wheels are driven by an engine mounted approximately in the middle of the body frame. If a water-cooled engine is used, an engine cooling water radiator is required, but this radiator is generally mounted upright near the front center of the vehicle body frame. Conventionally, as a mounting structure for mounting the radiator near the front center of the vehicle body frame, a gate-shaped steering shaft support member is placed behind the steering shaft and mounted on the left side of the vehicle body frame.

It was constructed so as to straddle the right side pipe, and the radiator was placed in an upright position in front of and parallel to the steering shaft, so that not only the steering shaft but also the radiator was supported by this steering shaft support member. There is a structure.

[Problem that the invention seeks to solve]

By the way, straddle-type vehicles for traveling on rough terrain are often used for sports driving on rough terrain, so it is desirable to have a structure that prevents parts of the vehicle from being easily damaged in the event of a fall.For example, if a crack occurs in the radiator, Since water leaks and the vehicle becomes undriveable, the radiator must have a structure that can prevent damage in the event of a fall. However, in the above conventional structure, no special consideration is given to the protection of the radiator, and therefore, the above-mentioned demand for protection of the radiator cannot be met.

In addition, since the steering shaft support member is located quite far from the radiator, when using this support member to support the radiator, the shape of the support bracket must be long in the front. However, there are some spoons that have a low degree of freedom in design and have a complicated bracket shape.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a radiator mounting structure that is provided with a radiator protection function.

[Means for solving problems]

The present invention relates to a straddle-type vehicle for running on rough terrain in which a radiator is arranged approximately parallel to the steering shaft at the center of the front part of a vehicle body frame that has left and right side pipes. This radiator mounting structure is characterized in that left and right side pipes are disposed to straddle the shaft and the radiator, and both the steering shaft and the radiator are supported by the support member.

Here, the radiator mounting structure of the present invention can be applied not only when the radiator is arranged in front of the steering shaft but also when it is arranged behind the steering shaft.

[Effect]

In the radiator mounting structure for a straddle-type vehicle for traveling on rough terrain according to the present invention, since the support member is disposed between the radiator and the steering shaft, the support member is located in the immediate vicinity of the radiator and This support member functions as a guard member, and as a result, prevents the radiator from colliding with rocks on the road surface in the event of a fall, and prevents large external forces from acting on the radiator. The radiator can be protected. Furthermore, since the support member is located close to both the radiator and the steering shaft, the bracket portion that fixes and supports them can be of a small shape, which improves the degree of freedom in design.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are diagrams showing a radiator mounting structure according to an embodiment of the present invention. In FIG. 10 Body frame 2 is on the left.

It is a double cradle type in which a right pair of cradle-shaped side pipes 2a are connected by a cross pipe 2b, and a seat rail 2C is connected to the rear of this. A front wheel 12 is attached to the front of the body frame 2 via a front wheel suspension 11, and a rear wheel 10 is attached to the rear via a rear arm 9a equipped with a rear wheel suspension 9. ．． Each front fender device 16 is located above the rear transport 10.
゜The rear fender device 15 is attached. Further, a water-cooled two-stroke two-cylinder engine 3 is mounted approximately in the center of the vehicle body frame 2, and a carburetor 4. The air cleaner main body 5 is connected to an exhaust pipe 6 on the exhaust side.

At the top of the vehicle body frame 2, there are radiators 2 in order from the front.
0. Steering axis 13. A fuel tank 7 and a saddle-shaped seat 8 are attached. The upper part of the radiator 20 is a radiator cover 2 mounted in an upright state on the rear end of the front fender device 16.
Covered by 1. In addition, the left side of the fuel tank 7,
The right side surface and the left and right sides of the steering shaft 13 are covered by left and right tank covers 22.

A steering shaft support tower 17 is installed between the radiator 20° and the steering shaft 13 of the vehicle body frame 2. The support tower 17 is formed by bending a steel pipe into a gate shape, and its left and right legs 17a are welded and fixed to the upper sides of the left and right side vibes 2a. Further, a steering shaft support bracket 18 is fixed to the rear side of the upper side portion 17b of the support tower 17 at the substantially center thereof, and a steering shaft bearing 19 is fixed to the bracket 18 by bolting. The steering shaft 13 is rotatably inserted through the cough bearing 19,
A steering handle 14 is attached to the upper end of the cough steering shaft 13,
The lower end is connected to the front wheel 12 via a tie rod.

Further, a central support portion 18a is provided in the center of the steering shaft support bracket 18 and extends forward.
The upper end of the radiator cover 21 is fixed with bolts. Further, the left and right end portions of the support bracket 18 are extended outward in the vehicle width direction, and the left and right support portions 18b extend rearward to the extension portions, and the left and right end portions 18b are provided with the left and right support portions 18b.

The front part of the right tank cover 22 is fixed with bolts.

Further, the support tower 17 has a gate shape that surrounds the left, right side and top surface of the upper part of the radiator 20 when viewed from the front. A radiator support bracket 23 is fixed to the front side of the upper side 17b of the support tower 17, and the upper end of the radiator 20 is bolted to the bracket 23 via a support piece 20a. .

Next, the effects of this embodiment will be explained.

Generally, when a radiator is installed in an upright position at the front of a vehicle and faces forward, the left and right sides of the radiator are located at the left and right edges of the vehicle. In this case, the left and right sides of the radiator are likely to hit rocks, etc. on the road surface (and the impact force at this time may cause cracks in the radiator.In contrast, in this embodiment, the radiator 20 is supported directly Since the tower 17 is positioned, the left and right sides and top surface of the radiator 20 are surrounded by the support tower 17, so even if the vehicle rolls over, the side of the radiator 20 will not shine directly on rocks, etc. Damage to the radiator 20 can be prevented, and stability when driving on rough terrain is improved accordingly.

In this embodiment, the steering shaft support tower 17 also supports the radiator 20. Not only the steering shaft 13 but also the radiator cover 2
1 and the tank cover 22, only one support component is required for these components, and the number of components and assembly steps can be reduced, and costs can be reduced accordingly. Moreover, in this case, the support tower 17 is connected to each of the covers 21, 22 . radiator 20
．． Since it is located at an intermediate position between supported members such as the steering shaft 13, there is no need for the support bracket to have a long shape, especially for the radiator 20. The support bracket for the steering shaft 13 may be a simple flat plate, and the degree of freedom in design can be improved accordingly.

In the above embodiment, the steering shaft support tower 17 also supports the covers 21 and 22 of each line, but in the present invention, it is not necessary to support these covers.
Further, in the above embodiment, the radiator 20 is arranged in front of the steering shaft 13, but the present invention can of course be applied to a case where the radiator is arranged behind the steering shaft. If you place a steering shaft support tower between the shaft and the steering shaft, you can protect the radiator 4I! The effect of improving the performance and the effect of converting the structure to nitrogen can be obtained.

〔Effect of the invention〕

As described above, according to the radiator mounting structure for a straddle-type vehicle for traveling on rough terrain according to the present invention, since the steering shaft support member of the same type is disposed between the steering shaft and the radiator, the support member This has the effect of preventing external forces from acting on the left and right side surfaces and the top surface of the radiator, improving the protection function of the radiator, and simplifying the shape of the support bracket.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining a radiator mounting structure according to an embodiment of the present invention. FIG. 1 is a side view showing the mounting state of the radiator, and FIG. 2 is a side view showing the mounting state of the radiator. A side view of the straddle-type vehicle for traveling on rough terrain to which the present invention is applied, and FIG. 3 is a plan view thereof. In the figure, 1 is a straddle-type vehicle for traveling on rough terrain, 2 is a body frame, 2a is a side vibrator, 13 is a steering shaft, 17 is a steering shaft support tower (support member), and 20 is a radiator.

Claims (1)

[Claims] (1) A vehicle body frame consisting of a pair of left and right side pipes is provided, the steering axis is arranged vertically at the center of the vehicle width direction at the front of the vehicle body frame, and the radiator is approximately parallel to the steering axis. In a straddle-type vehicle for traveling on rough terrain, which is disposed facing forward, the structure is for mounting the above-mentioned radiator, and the gate-shaped support member for supporting the steering shaft is connected between the steering shaft and the radiator. A radiator mounting structure for a straddle-type vehicle for traveling on rough terrain, characterized in that the radiator is installed so as to straddle the left and right side pipes between the support member and the radiator is attached to the support member.