JPH1016578A - Chassis structure of gaseous fuel vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate mounting and demounting work of a gas container by horizontally installing the gas container instead of a member between a pair of chassis frames in chassis structure of a gaseous fuel vehicle. SOLUTION: A pair of left side and right side chassis frames 4-1, 4-2 are provided on a car body 2. The left side chassis frame 4-1 is constituted of a left front frame 6-1, a left center frame 8-1 and a left rear frame 10-1. Additionally, the right side chassis frame 4-2 is constituted of a right side front frame 6-2, a right side center frame 8-2 and a right side rear frame 10-2. Additionally, first and second front cross frames 12, 14, a center member 16 and a rear cross frame 18 are provided by installing them horizontally at respective positions. Additionally, first and second gas containers 20-1, 20-2 are installed instead of conventional first and second rear members by horizontally installing them between the left side rear frame 10-1 and the right side frame 10-2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chassis structure for a gaseous fueled vehicle, and more particularly to a chassis structure for a gaseous fueled vehicle capable of facilitating attachment / detachment of a gas container and extending a cruising distance.

[0002]

2. Description of the Related Art As a vehicle, there is a natural gas vehicle (NGV) which is a gas fuel vehicle equipped with a natural gas engine using CNG (compressed natural gas) as a gaseous fuel.

In this natural gas vehicle, as shown in FIG. 9, a pair of left and right chassis frames is provided as a body 402 so as to mount a gas fuel engine and a body to which gas fuel is supplied from a gas container. 404-1, 40
4-2 is provided.

[0004] The left chassis frame 404-1 comprises a left front frame 406-1 and a left center frame 408.
-1 and a left rear frame 410-1. The right chassis frame 404-2 is connected to the right front frame 40.
6-2, a right center frame 408-2, and a right rear frame 410-2.

[0005] First and second front cross frames 412 and 414 are provided between the left front frame 406-1 and the right front frame 406-2.

[0006] A center member 416 is provided horizontally between the left center frame 408-1 and the right center frame 408-2.

[0007] First and second rear members 418 are provided between the left rear frame 410-1 and the right rear frame 410-2.
-1, 418-2 and the rear cross frame 420 are provided horizontally.

[0008] In the vehicle body 402, a gas container (not shown) for enclosing gaseous fuel is installed by a suspension frame or the like. Since this gas container is filled with gaseous fuel,
The strength is considerably higher than that of the chassis frame 404 or the like.

Such a chassis structure for a gaseous fuel vehicle is disclosed, for example, in Japanese Utility Model Laid-Open No. 59-53125. In the light commercial vehicle in which the engine is mounted on the upper part of the rear wheel on the rear side of the bed, the light commercial vehicle has an opening formed in the front part of the floor of the bed and an opening described in this publication. A propane cylinder in which at least the lower half in the longitudinal direction is inserted through a plurality of support portions, a flat flat cover body that closes an opening to cover the propane cylinder, and a gas discharge port of the propane cylinder. It is composed of a pipe member for connecting to a carburetor of the engine, and runs using propane gas from a propane cylinder as fuel.

[0010]

Conventionally, in a gaseous fuel vehicle, the gas container must be inspected at regular intervals and the gas container must be removed from the vehicle body. There was an inconvenience that the work was troublesome.

[0011] Further, the range of the gas container is shorter than that of a gasoline-powered vehicle using gasoline because of the low energy density of the gas container. To a gas container of capacity,
The gas container must be mounted in a large amount, and therefore, a room or luggage space must be used for the gas container. Therefore, there is a disadvantage that the room or the luggage space is reduced.

Further, the gas container is very heavy as compared with a gasoline tank or the like, and additional parts such as a suspension frame are required when the gas container is mounted. However, for this reason, there is an inconvenience that fuel efficiency and drivability deteriorate.

Further, with the mounting of the gas container, parts such as a suspension frame of the gas container are required, and the number of parts is large.
There has been a problem that the configuration is complicated and the cost is high.

[0014]

SUMMARY OF THE INVENTION Accordingly, in order to eliminate the above-mentioned disadvantages, the present invention provides a pair of chassis frames and a pair of chassis frames for mounting a gaseous fuel engine and a body to which gaseous fuel is supplied from a gas container. In a chassis structure of a gaseous fuel vehicle provided with a vehicle body having a member suspended between chassis frames, the gas container is provided between the pair of chassis frames instead of the member. Features.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the present invention uses a gas container instead of a member, thereby facilitating the attachment / detachment work of the gas container and the removal / attachment of the gas container at the time of inspection or the like. In addition, the cruising distance can be increased by mounting a large number of gas containers, and even if a large number of gas containers are mounted, the room and luggage space can be widely used. Eliminates the need for parts such as suspension frames, reduces vehicle weight, improves fuel efficiency and drivability, and further reduces the number of parts, simplifies construction, reduces costs, and has high strength. The rigidity of the vehicle body can be improved by the gas container.

Second, since the gas container is used as a part of the chassis frame, the same effect as in the first case can be obtained, and the gas container can have a large capacity and the cruising distance can be extended. it can.

Third, since the gas container is used in place of the member and as a part of the chassis frame, the same effects as those of the first and second cases are obtained, and a large number of gas containers are mounted. The cruising distance can be further increased, and the rigidity of the vehicle body can be further improved.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 to 5 show a first embodiment of the present invention. In FIG. 1, reference numeral 2 denotes a vehicle body on which a gas fuel engine (not shown) to which gaseous fuel as a gaseous fuel is supplied and a body (not shown) are mounted.

The vehicle body 2 includes left and right chassis frames 4-1 and 4-2 as a pair of chassis frames.

The left chassis frame 4-1 is composed of a left front frame 6-1, a left center frame 8-1, and a left rear frame 10-1.

The right chassis frame 4-2 includes a right front frame 6-2, a right center frame 8-2, and a right rear frame 10-2.

First and second front cross frames 12, 14 are provided between the left front frame 6-1 and the right front frame 6-2.

A center member 16 is provided between the left center frame 8-1 and the right center frame 8-2.

A rear cross frame 18 is provided between the left rear frame 10-1 and the right rear frame 10-2.

In addition, between the left rear frame 10-1 and the right rear frame 10-2, instead of the conventional first and second rear members, first and second gas containers 20-1 and 20- are provided.
2 is provided horizontally. Since the gas container 20 is filled with a gaseous fuel, the gas container 20 has considerably higher strength than the chassis frame 4 or the like.

The gas container 20 is attached to the rear frame 10 by various methods as shown in FIGS.

That is, in the first mounting method shown in FIG.
The rear frame 10 is provided with a frame-side holding portion 22 that is curved so as to protrude toward the upper surface 10a, and a mounting stay in which a stay-side holding portion 24 that is curved to the opposite side corresponding to the frame-side holding portion 22 is formed. 26, one side of the mounting stay 26, the other stay ends 26a, 26b are in contact with the lower surface 10b of the rear arm 10, and the one side, the other stay ends 26a, 26b are connected to one side of a bolt, etc. The lower surface 10b of the rear frame 10 with the other side fittings 28-1 and 28-2.
Attach to Then, the gas container 20 is held in the container holding space 30 formed by the frame-side holding portion 22 and the stay-side holding portion 24, and the gas container 20 is attached to the rear frame 10 by bolting on both sides.

In the first mounting method, as shown in FIG. 3, the end face of the gas container 20 is locked to the rear frame 10 so as to position the gas container 20 in the vertical direction. It is possible to provide a positioning cover 32.

In the second mounting method shown in FIG. 4, a frame-side holding portion 102 is formed on the rear frame 10 so as to protrude toward the upper surface 10a. Curved stay-side holder 1
The mounting stay 106 is formed with a support pin 104 on one side end 106 a of the mounting stay 106 projecting from the lower surface 10 a of the rear frame 10.
And the other end 106b of the attachment stay 106 is attached to the lower surface 10b of the rear frame 10 with an attachment 112 such as a bolt. Then, the gas container 20 is held in the container holding space 114 formed by the frame-side holding portion 102 and the stay-side holding portion 104.
With one side bolted movable type. In the second mounting method, as in the first mounting method described above,
It is also possible to provide a positioning cover (not shown) on the rear claim 10.

In the third mounting method shown in FIG. 5, the rear frame 10 is formed with a frame-side holding portion 202 which is curved so as to protrude toward the upper surface 10a, and is provided on the opposite side corresponding to the frame-side holding portion 202. Curved stay-side holder 2
The mounting stay 206 is formed with the mounting stay 204, and one side of the mounting stay 206 and the other end portions 206a and 206b are
One side of the C-shaped cross section, the other side fall prevention hook 208-1,
One side of the rear frame 10 and the other side mounting parts 210-1 and 210-
2, the gas container 20 is held in the container holding space 212 formed by the frame-side holding portion 202 and the stay-side holding portion 204. Further, in the third mounting method, a positioning cover (not shown) can be provided as in the first mounting method described above.

Next, the operation of the first embodiment will be described.

As shown in FIG. 1, the gas container 20 includes a left rear frame 1 instead of the conventional first and second rear members.
0-1 and the right rear frame 10-2.

At this time, each end of the gas container 20 is mounted on the right rear frame 10-1 and the right rear frame 10-2 by any of the mounting methods shown in FIGS.

As a result, the gas container 20 is used in place of the rear member, and the gas container 20 is detachably mounted from below by the above-described mounting methods. Thus, the gas container can be easily removed and attached from below the vehicle body 2 at the time of inspection or the like.

Further, the cruising distance is increased by mounting a large number of gas containers 20 of two or more, and even if such a large number of gas containers 20 are mounted, the room and luggage space can be widely used.

Further, the components such as the suspension frame of the gas container 20 are not required, and the rear member is not required, so that the weight of the vehicle can be reduced, and the fuel efficiency and drivability can be improved.

Furthermore, parts such as a suspension frame and a rear member are not required, the number of parts is reduced, the structure is simplified, and the cost can be reduced.

Further, the rigidity of the vehicle body can be improved by the high-strength gas container 20.

In the first mounting method shown in FIG. 2, the gas container 20 can be attached and detached simply by removing and attaching the one-side and other-side attachments 28-1 and 28-2, so that the work is easy. It can be made.

In the second mounting method shown in FIG. 4, the mounting operation can be performed more easily because the mounting stay 106 only needs to be swung to attach and detach the gas container 20.

According to the third mounting method shown in FIG. 5, the mounting stay 206 can be fixed by the hooks 208-1 and 208-2 for preventing the falling off on one side and the other side.
6 can be reliably prevented from falling off, and the gas container 20 can be reliably prevented from falling off.

Also, by providing the positioning cover 32 on the rear frame 10 as shown in FIG. 3, the vertical position of the gas container 20 can be easily determined, and a large impact is applied to the vehicle body 2. Even in the case where it is added, it is possible to prevent flying out and improve safety.

FIGS. 6 and 7 show a second embodiment of the present invention.

In the following embodiment, portions having the same functions as those in the above-described first embodiment will be described with the same reference numerals.

The features of the second embodiment are as follows. That is, the third and fourth gas containers 20-3 and 20-4 as gas containers are provided instead of the left and right center frames that are a part of the chassis frame 4. The third and fourth gas containers 20-3 and 20-4 are connected to and mounted on the front frame 6 and the rear frame 10 in the same manner as in the first to third mounting methods of the first embodiment described above.

Further, the third and fourth gas containers 20-3, 20
A reinforcing member 302 that supports the third and fourth gas containers 20-3 and 20-4 functioning as members is provided between -4. The reinforcing member 302 includes a one-side reinforcing portion 302a, a center-side reinforcing portion 302b, and another-side reinforcing portion 302c.
The gas container 20 has the same strength as that of the vehicle body and does not damage the gas container 20.

Further, the third and fourth gas containers 20-3, 20
Along the left side, the right side frame 304-1,
304-2 is attached. The left and right side frames 304 are used to secure rigidity when removing the gas container 20 or to prevent damage to the gas container 20 at the time of a side collision.
0 does not break and easily absorbs impact. The left and right side frames 304-1,
304-2 includes one-side reinforcing portion 3 of the above-described reinforcing member 302.
02a, the other-side reinforcing portion 302c can be connected to each other. Thereby, the vehicle body 2 can be made firm.

Further, as shown in FIG.
In order to protect the gas container 20 from stepping stones or the like during traveling or the like, a protective plate 3 is provided from below the vehicle.
06 is provided.

In the second embodiment, the first and second rear frames 10-1 and 10-2
The second rear members 308-1 and 308-2 are provided.

According to the structure of the second embodiment, the same effects as those of the first embodiment can be obtained, the gas container 20 can have a large capacity, and the cruising distance can be extended.

FIG. 8 shows a third embodiment of the present invention.

The features of the third embodiment are as follows. That is, the first and second embodiments described above are combined, and the first and second gas containers 20- instead of the members are provided between the left rear frame 10-1 and the right rear frame 10-2. 1, 20-2 are provided. Also on the left,
Instead of each center frame as a part of the right chassis frames 4-1 and 4-2, third and fourth gas containers 20-3,
20-4 are provided. In this case, each gas container 20 is attached to each frame in the same manner as the first to third attachment methods of the first embodiment described above.

According to the configuration of the third embodiment, the same effects as those of the first and second embodiments can be obtained, a large number of gas containers 20 can be mounted, the cruising distance can be further increased, and The rigidity can be further improved.

[0054]

As is apparent from the above detailed description, according to the present invention, first, a gas container is provided between a pair of chassis frames of a vehicle body instead of a member so as to provide a gas container. The container can be easily attached / detached to facilitate removal / attachment of the gas container at the time of inspection, etc., and a large number of gas containers can be mounted to extend the cruising distance. Even if the vehicle is equipped, the room and luggage space can be widely used, and the parts such as the suspension frame of the gas container are unnecessary, reducing the weight of the vehicle, improving fuel efficiency and drivability, etc. , Reducing the number of parts, simplifying the configuration,
Moreover, the rigidity of the vehicle body can be improved by the high-strength gas container.

Second, by providing the gas container as a part of the chassis frame, the same effect as in the first case can be obtained, the gas container can be made large in capacity, and the cruising distance can be extended. I can do it.

Third, a gas container is provided between the pair of chassis frames in place of the members, and a gas container is provided as a part of the chassis frame. The same effect as in the case can be obtained, and a larger number of gas containers can be mounted, the cruising distance can be further increased, and the rigidity of the vehicle body can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle body according to a first embodiment.

FIG. 2 is a perspective view of a first mounting method of the gas container.

FIG. 3 is a bottom view of a first mounting method in which a positioning cover is mounted.

FIG. 4 is a perspective view of a second mounting method of the gas container.

FIG. 5 is a perspective view of a third mounting method of the gas container.

FIG. 6 is a perspective view of a vehicle body according to a second embodiment.

FIG. 7 is a bottom view of the second embodiment with a protection plate attached.

FIG. 8 is a perspective view of a vehicle body in a third embodiment.

FIG. 9 is a perspective view of a conventional vehicle body.

[Explanation of symbols]

 2 Body 4 Chassis frame 6 Front frame 8 Center frame 10 Rear frame 20 Gas container 26 Mounting stay 30 Container holding space 32 Positioning cover

Claims (3)

[Claims] 1. A gaseous fuel provided with a vehicle body having a pair of chassis frames and a member suspended between the chassis frames so as to mount a gas fuel engine and a body to which gaseous fuel is supplied from a gas container. A chassis structure for a gaseous fuel vehicle, characterized in that in the chassis structure of the vehicle, the gas container is provided horizontally between the pair of chassis frames instead of the members. 2. A gaseous fuel provided with a vehicle body having a pair of chassis frames and a member laid between the chassis frames so as to mount a gaseous fuel engine and a body to which gaseous fuel is supplied from a gas container. A chassis structure for a gaseous fuel vehicle, wherein the gas container is provided as a part of the chassis frame. 3. A gaseous fuel provided with a vehicle body having a pair of chassis frames and a member suspended between the chassis frames so as to mount a gaseous engine and a body to which gaseous fuel is supplied from a gas container. A gaseous fuel vehicle, wherein in the chassis structure of the vehicle, the gas container is provided between the pair of chassis frames in place of the member, and the gas container is provided as a part of the chassis frame. Chassis structure.