JPS64364Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the roll bar structure of a vehicle such as a so-called buggy type four-wheeled vehicle that is not equipped with a body panel and is mainly suitable for driving on rough terrain.

In a so-called buggy type vehicle, in which at least two front and rear wheels are suspended on a bar-shaped main frame extending front and rear on both sides of the vehicle body, the engine is mounted behind a seat located between the front and rear wheels, and no body panels are attached. In the past, roll bars were welded to the front and rear of the main frame.

Since the roll bar is integrally provided on the frame, the package size of the vehicle is large and the roll bar cannot be replaced.

Therefore, it is desirable to make the roll bar removable from the frame, but since the front part of the main frame is particularly low and front fenders are installed on both sides, it is difficult to install the roll bar. It requires some consideration to make it easier.

This idea was created in view of the above circumstances.
The purpose of this is to make the roll bar removable from the frame, so that when packing the vehicle the roll bar can be removed to reduce the packaging size, and the front part of the roll bar can be easily attached to the frame. Furthermore, it is an object of the present invention to provide a roll bar structure for a vehicle in which the roll bar itself can be freely divided so that only necessary parts can be replaced without replacing the entire roll bar.

In order to achieve such an object, the present invention provides a vehicle in which the left and right front frames are welded and fixed to the vicinity of the front wheel support portion of the main frame, and the front frames are extended rearward and obliquely upward, so that a The left and right roll bars are separably connected by bolts and extend to the rear of the vehicle body, the rear ends of these roll bars are bolted to the vicinity of the rear wheel support part of the main frame, and the upper parts of the left and right roll bars are connected to each other by bolts. The gist is that they are connected to each other by cross pipes.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of the vehicle, and FIG. 2 is an exploded perspective view of its roll bar.

At the front of the body frame 2 of the vehicle 1 are two front wheels 3,
3, two rear wheels 4, 4 are suspended at the rear, respectively, and the main frames 20, 20 on both the left and right sides are composed of pipes 21, 22 and 21, 22 that extend in the front and back and form upper and lower bar shapes in two stages, and cross pipes. The front and rear wheels are connected at 23..., a seat 5 is arranged between the front and rear wheels, and an internal combustion engine 6 is mounted behind the seat 5. A steering handle 7 for steering the front wheels 3, 3 faces the passenger side from above the front part of the vehicle body frame 2, and fenders 8, 9, etc. are provided above each wheel 3, 4, respectively. 1 is a buggy-type four-wheeled vehicle that does not have a body panel attached.

From the vicinity of the front wheel support portions of the main frames 20, 20 of the vehicle 1 described above, the left and right front frames 2
4 and 24 are installed protrudingly. Front frame 24, 2
Reference numeral 4 indicates rearwardly tilting pipes 25, 25 which are fixed by welding or the like on the front ends of upper pipes 21, 21 of the main frames 20, 20, and forwardly tilting sub pipes which are fixed by welding or the like between the rear ends of the pipes 25, 25 and the upper pipes 21, 21. 26, 26, and both subpipes 26, 26 are connected by a cross pipe 27. At the rear ends of the rearwardly inclined pipes 25, 25 of the front frames 24, 24, mounting portions 28, 28, which have a semicircular cross section and have flat surfaces 29, 29 vertically arranged, are formed as shown in FIG. This mounting part 2
8 and 28 are located higher than the front fenders 8 and 8.

Mounting parts similar to these mounting parts 28, 28 are provided upright at the rear ends of the upper pipes 21, 21, and at the middle part of the side of the seat 5 in front of these.

On the other hand, the roll bar 30 is made up of a three-part structure, that is, the upper part of the roll bar is connected to a cross pipe 32, and the left and right front pipes 3 extend rearward at a slant.
1, 31, a center pipe 33 formed in a generally gate-shaped bend when viewed from the front, and left and right rear pipes 3
It consists of 4, 34.

At the front ends of the front pipes 31, 31 constituting the roll bar 30, the mounting portions 28, 28 are attached.
Attachment portions 35, 35 with semicircular cross sections are formed having flat surfaces 36, 36 that match.

Similar mounting portions 37, 37 are formed at both lower ends of the center pipe 33, and furthermore, the rear pipe 33
Attachment portions 38, 38 are also formed at the lower ends of 4, 34.

These mounting parts 38, 38 are attached to the main frame 2.
It is bolted to the vicinity of the rear wheel support part of 0 and 20.

Further, similar mounting portions 41, 41 and 42, 42 are provided on the left and right upper ends of the center pipe 33, protruding forward and backward, and mounting portions 43, 43 that match the mounting portions 41, 41 facing forward are provided on the front pipe 31,
Attachment portions 44, 44 are formed at the upper ends of the rear pipes 34, 34 to match the attachment portions 42, 42 formed at the rear ends of the rear pipes 31 and facing rearward.

To connect the above mounting parts, insert the bolt 51 from the outside as shown in FIG.
2 shall be concluded.

Thus, in this embodiment, the roll bar 30 having a three-part structure is installed on the rear parts of the front frames 24, 24 and on the rear parts of the main frames 20, 20, with a total of six roll bars on the right and left sides.
Secure by point bolt connection.

In this way, roll bar 30 for frame 2
Since it is configured to be detachable by bolt connection, the roll bar 30 can be removed when packing the vehicle to reduce the packaging size.Furthermore, the front frames 24, 24 are protruded from the front parts of the left and right main frames 20, 20. and the front frame 24,
24, the front part of the roll bar 30 can be easily attached to the frame 2 without the front fenders 8, 8 getting in the way.

Furthermore, the roll bar 30 itself is also bolted together,
For example, since the structure is divided into three parts, ie, the front, center, and rear, as in the embodiment, it is possible to replace only the parts that need to be replaced due to rust, etc., and there is no need to replace the entire roll bar 30.

Furthermore, since the bolt joints are formed into mounting parts 28 and 35 having semicircular cross sections as shown in FIG. 3, the rigidity of the joints is also high.

In the embodiment, the roll bar 30 has a three-part structure, but it may also have a two-part structure of front and rear parts, and of course, it may be further divided. Furthermore, the vehicle is not limited to a four-wheel vehicle, and may have six wheels.

As is clear from the above explanation, according to the roll bar structure of the present invention, the roll bar can be removed when packing a vehicle to reduce its packing size, and the front part of the roll bar can be easily attached to the frame. Also, only the necessary parts can be divided and replaced without replacing the entire roll bar.

Furthermore, when the roll bar is attached, the front frame, roll bar, and cross bar serve as reinforcing members for the main frame, increasing the bending and torsional rigidity of the main frame. Since the reinforcing material acts near the front and rear wheel support portions of the main frame, the rigidity of the vehicle body is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the vehicle, FIG. 2 is an exploded perspective view of a roll bar, and FIG. 3 is an enlarged exploded perspective view of a bolted joint. In the drawings, 1 is the vehicle, 3, 4... are wheels, 8 is a front fender, 20 is a main frame, 24 is a front frame, 28 is its mounting part, 30 is a roll bar, 31 is its front pipe, and 33 is its center pipe. , 34 are the same rear pipes, 35... are their mounting parts, and 51, 52 are bolt nuts.

Claims (1)

[Scope of Claim for Utility Model Registration] At least two bar-shaped left and right main frames 20, 20 extending front and rear on both sides of the vehicle body.
In a vehicle 1 in which two wheels 3, 4 are suspended, left and right front frames 24, 24 are welded and fixed near the front wheel support portions of the main frames 20, 20, and the front frames 24, 24 are extended diagonally upward to the rear. From these front frames 24, 24, there are left and right roll bars 3 which are detachably bolted together.
0 and 30 are extended to the rear of the vehicle body, and the rear ends of these roll bars 30 and 30 are bolted to the vicinity of the rear wheel support portions of the main frames 20 and 20, and the upper parts of the left and right roll bars 30 and 30 are connected to each other. A roll bar structure for a vehicle characterized by being connected by a cross pipe 32.