JPH02293275A - Four-wheeled vehicle - Google Patents

Abstract

PURPOSE:To make a car body lighter in weight by welding multiple honeycomb panel members formed by means of brazing in three dimensions, constituting a cabin, and connecting each pipe frame to the front and rear of this cabin, while suspending an engine on either side. CONSTITUTION:Wall members 8, 9 and 10 consisting of honeycomb panel members are uprighted, by means of butt welding, to both sides of a floor member 7 consisting of honeycomb panel members likewise molded by means of brazing, using them as side plates. In front and in the rear, wall members 11, 12 consisting of honeycomb panel members likewise are uprighted by means of butt welding and thereby a cabin 4 is constituted. A bonnet member 13 of this cabin 4 is also made of panel material. Pipe frames 5, 6 are attached to these wall members 11, 12 in front and in the rear of the cabin 4 by brackets, and an engine 41 is mounted on the frame 6. Consequently, any frame member becomes disused for the cabin 4, so that its lightweightiness is thus promotable.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a four-wheeled vehicle in which a portion of the vehicle body is constructed from a honeycomb panel material formed by brazing.

(Prior Art) In recent years, four-wheeled vehicles have appeared in which a portion of the vehicle body is made of honeycomb panel material for the purpose of reducing weight and increasing strength (see, for example, Japanese Utility Model Application Publication No. 174978/1983). Note that a honeycomb panel material is a panel material having a large number of spaces with a hexagonal cross section, and is obtained by bonding and integrating honeycomb core materials obtained by press-forming aluminum plates or the like. (Problem to be Solved by the Invention) However, in conventional four-wheeled vehicles that use honeycomb panel material as a part of the vehicle body, the honeycomb panel material is joined to the site frame, for example, so the honeycomb panel material is particularly Frame materials such as side frames are essential for three-dimensional connection of panel materials, which increases the number of parts, increases cost and weight, and is not easy to manufacture. Additionally, when frame material is used to join honeycomb panel materials, there is a problem in that the space inside the cabin is reduced by an amount corresponding to the width of the frame material. The present invention was made in view of the above-mentioned problems, and its purpose is to reduce the number of component parts of a vehicle body, thereby reducing weight, reducing costs, facilitating manufacturing, and expanding the space inside the cabin. Our aim is to provide four-wheeled vehicles that can

(Means for Solving the Problems) In order to achieve the above object, the present invention constructs a cabin by three-dimensionally welding a plurality of honeycomb panel materials formed by brazing, and a pipe frame is installed at the front and rear of the cabin. The feature is that they are connected to each other and suspended on either side of the pipe frame to form a four-wheeled vehicle. (Function) According to the present invention, there is no need for a frame material to construct the cabin, and the cabin is constructed by three-dimensionally welding honeycomb panel materials, thereby reducing the number of component parts of the vehicle body, reducing the weight of the vehicle body, and reducing costs. It is possible to downsize, simplify manufacturing, and expand the space inside the cabin.

(Example) An example of the present invention will be described below based on the accompanying drawings.

Fig. 1 is a side view showing the body structure of a four-wheeled vehicle according to the present invention, Fig. 2 is a partial plan view of the same, and Figs. Cross-sectional view, TV-IV line cross-sectional view,
The V-V line sectional view, Figures 6 and 7 are respectively enlarged partial views of Figure 2, and the 1-1 line sectional views, Figures 8, 9, 10 and 11 are respectively ■-■ cross-sectional view of the figure, IX-
IX line sectional view, XX line sectional view, XI-XI line sectional view,
12 and 13 are a sectional view taken along line 1-2 and 1'-4 in FIG. 2, respectively.

A four-wheel vehicle 1 is a four-wheel drive (4WD) type, and the front and rear parts of the vehicle body are supported by left and right front wheels 2, 2 and rear wheels 3, 3, respectively, and the vehicle body is supported by brazing. A box-shaped cabin 4 is constructed by three-dimensionally welding a plurality of formed honeycomb panel materials, and a pipe frame 5 is installed at the front and rear of the box-shaped cabin 4.
It is constructed by connecting 6.

In the cabin 4, reference numeral 7 denotes a floor member made of honeycomb panel material, and on both sides of this are wall members 8 made of honeycomb panel material, as shown in FIGS. 1 to 4.
8, 9, 9, 10.10 are vertically butt-welded and stand up, and each wall member 8, 9 that constitutes a side plate of the vehicle body.
．． 10 are butt welded as shown in Fig. 4, and these have a bent shape in plan view. Also, in front and behind the floor member 7, there are wall members 11.1 made of honeycomb panel material.
The upper front surface of the cabin 4 is partially covered with a bonnet member 13 also made of honeycomb panel material.
As shown in FIG. 5, this bonnet member 13 is welded to the inner surfaces of the wall members 8, 9, 10.11 in a substantially perpendicular manner. Incidentally, a plate l4 or a channel-shaped member l5 is welded to the open end surface of each of the wall members 8 to 12, as shown in FIGS. 3 to 5. By the way, the honeycomb panel material is constructed by brazing face sheets 17 and 18 on both sides of a honeycomb core material l6 having a large number of spaces with a hexagonal cross section, as shown in FIG. If so, the thickness of the face sheet 18 on the road surface side (lower side) that receives flying stones etc. is increased, or a cushioning material is provided on the lower surface of the face sheet 18. In addition, the material of the honeycomb panel material includes metal materials such as aluminum and iron, and since the honeycomb panel material is formed by brazing, it is possible to weld it.

The interior of the cabin 4 configured as described above includes a steering handle 19, a shift lever 20, a seat 21. Whether the fuel tank 22 etc. is stored, the fuel tank 22 is located in seat 2.
It is compactly housed in a space that is long in the vehicle width direction and is formed between L and wall member L2. Further, a rollper 23 formed into a frame shape from a vibrator material is removably attached to the upper part of the cabin 4. That is, flanges 24, 24, 25, and 25 are welded to the front and rear left and right sides of the roll par 23, respectively, and these flanges 24 and 25 are connected to brackets 26 and 27 that are welded to the upper part of the cabin 4 with bolts 28 and 25, respectively. The roll par 23 is attached to the cabin 4 by tightening at .... Incidentally, as shown in FIG. 6, the portions to which the brackets 24 and 25 of the cabin 4 are welded, for example, the portion A of the bonnet member l3 shown in FIG. It is reinforced by reinforcing plates 29.

On the other hand, the pipe frame 5 is detachably attached to the wall member 11 constituting the #J wall of the cabin 4. That is, the wall member 11 has a bracket }-30.30,3
1.31.32.32 are welded, and each bracket 30, 31.32 is fastened to each bracket 33, 34.35 welded to the pipe frame 5 side or bolt 36... (See Figure 7). A front gear case 37 is attached to the pipe frame 5, and axles (not shown) extend from both sides of the front gear case 37 via constant velocity joints. The front wheel 2.2 is rotatably connected to these axles via a constant velocity joint (not shown), and the front wheel 2.2 is suspended on the pipe frame 5 via a link mechanism (not shown) and a front cushion. It has been done. Further, the pipe frame 6 is removably attached to the wall member 12 constituting the rear wall of the cabin 4, and the vibe frame 5 has a cross section as shown in FIG. A pipe 38 is installed. As shown in FIG. 8, each end of the cross vibe 38 is connected by bolts 40 inserted through the flaket 39.

An engine 4l is mounted on the pipe frame 6 in close proximity to the wall member 12, and the engine 4l is mounted at two points on each left and right at the front and rear (a, b, c shown in FIG. 2). ，
point d) is supported by the wall member 12 and the cross menher 42 of the pipe frame 6, respectively. The support structure at point a is shown in FIG.
A bracket 47, which is fastened to the front of the engine 41 with bolts 46, is supported by bolts 49 via a rubber sleeve 48. . The rubber sleeve 48 is constructed by baking a cylindrical rubber 48b onto the outer periphery of a metal sleeve 28a, and a bolt 49 passes through the sleeve 48a. Further, the support structure at point C is shown in FIG. A bracket 53 is supported via a rubber sleeve 54. Note that the support structures at point b and point d are the same as those at point a and point C, respectively, so a description thereof will be omitted. By the way, the engine 4l has a crankcase 4 as shown in FIG.
1a and a transmission case 4lb are connected in series in the vehicle width direction, and an output shaft 5 is connected from the center of the engine 41.
6.57 It extends in the front and back direction. One end of an intermediate shaft 59 is connected to the one output shaft 56 via a constant velocity joint l8, and the other end of the intermediate shaft 59 is connected to a blower shaft 6l via a unihearsal joint 60. . The propeller shaft 6l is connected to the input shaft 63 of the front gear case 37 via a unihearsal joint 62. still,
The intermediate shaft 59 and the propeller shaft 61 pass through the interior of the cabin 4 and extend vertically in the longitudinal direction of the vehicle body as shown in the figure, and the exposed portions inside the cabin 4 are shown in FIGS. 1 and 3. It is covered with a cover 64 attached to the floor member 7. Also, propeller shaft 61
The middle portion of the cover 64 is supported by a center bearing 65, and the center bearing 65 is supported by a bracket 66 arranged inside the cover 64, as shown in FIG. This bracket 66 is a bracket that supports the shift lever 20, and is attached to the cover 64 on the floor member 7 with bolts 67 as shown in FIG.
They are also fastened together. The other output shaft 57 is connected to the input shaft 7l of the rear gear case 70 via a viscous coupling 68 and a constant velocity joint 69. The rear gear case 70 is attached to the pipe frame 6, and axles (not shown) extend from both sides of the rear gear case 70 via constant velocity points. The rear wheels 3, 3 are rotatably connected to these axles via constant velocity joints, and the rear wheels 3, 3 are suspended on a pipe frame 6 via a link mechanism (not shown) and a rear cushion. ing.

By the way, in this embodiment, an air cleaner 73 disposed above the cylinder 72 of the engine 41 is connected to the air intake system of the cylinder 72 of the engine 41 via an intake manifold 74.
a, and an exhaust manifold 75 extends from the exhaust system of the cylinder 72.
A muffler 76, which is long in the vehicle width direction, is connected to the muffler 76. Also, a pipe frame 77 is detachably attached above the engine 41, and its mounting structure is the same as that of the 12th []
and shown in Figure 13. That is, one end of the pipe frame 77 is fastened to a bracket 80 welded to the roll par 23 by a bolt 79 inserted through a bracket 78 welded to the vibe frame 77, as shown in FIG. The other end of the frame 77 is fastened to a flaket 82 welded to the pipe frame 6 by bolts 82, 82 that pass through brackets 81 welded to the pipe frame 77, as shown in FIG. When installing or removing the engine 41, the pipe frame 77 is removed.

In the four-wheeled vehicle 1 constructed as described above, the cabin 4 has a floor member 7 made of honeycomb panel material formed by brazing, and wall members 8 to 12 made of honeycomb panel material directly and It is constructed by three-dimensionally welding the vehicle almost face-to-face, and eliminates the need for frame members as strength members that were previously required, reducing the number of component parts, reducing the weight of the vehicle body, reducing costs, and facilitating manufacturing. In addition, the width of the cabin 4 can be increased by the amount of unnecessary frame members, and the space of the cabin 4 can be expanded.

In addition, since the engine 41 is installed close to the joint between the floor member 7 and the wall member l2, which have high strength and rigidity (portion B in Fig. 1), vibration propagation of the engine 41 is prevented and road vibration is prevented. Accordingly, even if an inertial force acts on the engine 4l, this inertial force can be sufficiently received.

Furthermore, in this embodiment, since the fuel tank 22, engine 41, and muffler 76 which are long in the vehicle width direction are mounted,
It is possible to shorten the length of the vehicle body in the longitudinal direction. In this embodiment, the engine 41 is mounted on the rear pipe frame 6, but it may be mounted on the front pipe frame S. Furthermore, in this embodiment, the lower surface of the vehicle body is configured to be flat,
There are no parts protruding below this that cause air resistance, so
The vehicle body has excellent aerodynamic characteristics,
The running resistance of the four-wheeled vehicle 1 can be suppressed to a low level.

(Effects of the Invention) As is clear from the above description, according to the present invention, in a four-wheel vehicle, a cabin is constructed by three-dimensionally welding a plurality of honeycomb panel materials formed by brazing, and the front and rear of the cabin are Since the vibe frame is connected to each pipe frame and the engine is suspended on either side of the pipe frame, no frame members are required in the cabin configuration, which reduces the number of vehicle components, reduces the weight of the vehicle body, reduces costs, and facilitates manufacturing. This has the effect of increasing the size of the vehicle and expanding the space inside the cabin.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the body structure of a four-wheeled vehicle according to the present invention, Fig. 2 is a partial plan view of the same, and Figs. 3, 4, and 5 are cross sections taken along the line Figure, IV-IV line sectional view,
The V-V line sectional view, Figures 6 and 7 are respectively enlarged partial views of Figure 2, and the 1-1 line sectional views, Figures 8, 9, 10 and 11 are respectively ■-VW line sectional view in the figure, IX
-IX line sectional view, XX line sectional view, X[-XI line sectional view, FIG. 12, and FIG. 1... Four-wheeled vehicle, 4... Cabin, 5.6... Pipe frame 8, 9.1 (flannel material), Ru material), 4 7... Floor member (honeycomb panel material), 0, 11.12
...Wall member (Honeycomb 13...Bonnet member (
Honeycomb panel 1...Enshin. Patent applicant Yamaha Motor Co., Ltd.

Claims (1)

[Claims] A cabin is constructed by three-dimensionally welding a plurality of honeycomb panel materials formed by brazing, pipe frames are connected to the front and rear of the cabin, and an engine is suspended on either one of the pipe frames. wheeled vehicle.