JPH0319458Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a fuel tank mounting device for a vehicle in which a cabin and a box are mounted on a vehicle body frame, and particularly relates to improving the installation workability and service workability thereof. It is something.

[Prior art]

Conventionally, when installing a fuel tank on a vehicle in which the cabin and box are mounted on the body frame, the flange of the fuel tank was tightened and fixed to the mounting bracket of the body frame with bolts (Mazda, July 1973). (See page 32 of "Bongo Wide Draw Structure and Maintenance" published by Toyo Kogyo Co., Ltd.).

By the way, when a vehicle is running, vibrations from the road surface,
Or vibrations occur due to engine rotation,
When the vibrations are transmitted to the fuel tank, there is a possibility that cracks may occur in the flange portion of the fuel tank or the tank body.

Conventionally, in order to prevent the vibrations from being transmitted to the fuel tank, the fuel tank has been mounted on a rubber mount, one example of which is shown in FIG. In the figure, reference numeral 1 denotes a cross member of the vehicle body frame. A mounting bracket 2 is fixed to the tank mounting portion of the cross member 1, and a fuel tank 3 is mounted below the mounting bracket 2.
The flange portion 3a of is arranged via the rubber 4,
A mounting bolt 5 is inserted into the mounting hole of the flange portion 3a, and a double nut 7 is screwed onto the mounting bolt 5 via a reinforcing member 6, whereby the fuel tank 3 is rubber-mounted to the mounting bracket 2. There is. Further, on the vehicle body frame, a box 8 is mounted above the fuel tank 3, and a cabin 9 is mounted above and in front of the fuel tank 3.

The above fuel tank 3, box 8 and cabin 9
When attaching the fuel tank 3 to the vehicle body frame, the fuel tank 3 is first attached to the mounting bracket 2 of the vehicle body frame using the mounting bolts 5, and then the box 8 and the cabin 9 are attached to the vehicle body frame. In the fuel tank mounting device,
In order to attach the fuel tank 3 to the mounting bracket 2, it is necessary to screw the nut 7 onto the bolt 5 through the gap between the lower end of the cross member 1 and the fuel tank 3, which makes temporary tightening and tightening of the nut 7 difficult. Therefore, in the conventional device shown in FIG. 4, there was a problem that the efficiency of the installation work of the fuel tank 3 was low.

Therefore, in order to facilitate the tightening work of the nut 7 and improve work efficiency, as shown in Fig. 5, the mounting bolt 5 is inserted upward from the bottom of the mounting bracket 2, contrary to the case shown in Fig. 4. However, it is conceivable to screw the nut 7 onto the upper side of the mounting bracket 2, and by doing so, the efficiency of the work of mounting the fuel tank 3 can be improved. However, if you do this, even if you try to remove the fuel tank 3 for maintenance or other servicing, the box 8 is mounted on the upper side of the fuel tank 3, so the nut 7 cannot be removed.
Therefore, a problem arises in that the fuel tank 3 cannot be removed.

[Purpose of invention]

The present invention has been made in this conventional situation, and provides a vehicle fuel tank mounting device that allows easy installation of the fuel tank to the vehicle body frame and allows the fuel tank to be removed from the vehicle body frame during service. The purpose is to

[Structure of the idea]

The inventor of the present invention believes that when installing a fuel tank, it is necessary to tighten the mounting nuts in a short time, but when servicing the fuel tank, it is not a problem even if it takes some time to loosen and tighten the mounting nuts. In other words, the present invention is a vehicle fuel tank mounting device in which a mounting bolt has a collar portion in the center, threaded portions on both sides thereof, and a threaded portion on the lower side of the mounting bolt. is inserted into the flange of the fuel tank via an elastic member, the lower threaded part is fixed to the flange with a double nut, and the upper threaded part of the mounting bolt is fixed to the tank mounting part of the vehicle body frame with a mounting nut. As a result, fuel tank installation work is done by attaching a nut to the top of the tank mounting part, and when servicing the fuel tank, the tank can be removed by loosening a double nut from the bottom of the tank mounting part. be.

〔Example〕 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of the present invention. In the figures, 11 is a pickup type automobile in which a box 14 and a cabin 13 are mounted on a body frame 12, and the body frame 12 is located on the left side of the vehicle body. , consists of a side member 12a that is disposed on the right side and extends in the longitudinal direction of the vehicle body, and a cross member 12b that extends in the left-right direction of the vehicle body and connects the left and right side members 12a. Note that 15 is a propeller shaft, 16 is a differential gear, 17 is a wheel, and 18 is a silencer.

A mounting bracket 12c is fixed to the tank mounting portion of the cross member 12b.
A fuel tank 19 is rubber-mounted to the mounting bracket 12c with mounting bolts 20. The mounting bolt 20 is rod-shaped and has an annular locking part 21c integrally formed approximately in the center thereof, and an upper threaded part 21a and a lower threaded part 21 on the upper and lower sides thereof.
b is formed, and a collar member 22 is fixed to the lower surface of the locking portion 2c. The collar member 22 is rectangular in plan view, and its mounting bracket 12c
A locking portion 22a is formed by bending downward at the side end.

The lower threaded portion 21b of the mounting bolt 20 is fitted from above into a mounting hole 19b formed in the flange portion 19a of the fuel tank 19, and the flange portion 19c of the mounting bolt 20 and the collar member 22 are connected to each other. A flat rubber 23 is attached to the portion between them, and a double nut 26 is screwed onto the lower threaded portion 21b of the mounting bolt 20 via a reinforcing member 24 and a washer 25.

Additionally, the upper threaded portion 21a of the mounting bolt 20 is
is inserted from below into the mounting hole 12d of the mounting bracket 12c, and a mounting nut 28 is screwed through the washer 27.

Next, the effects will be explained.

To rubber mount the fuel tank 19 to the mounting bracket 12c using the device of this embodiment, first,
The mounting bolt 20 is attached to the fuel tank 19 outside the assembly line. The subassy is
Rubber 2 is placed on the flange portion 19a of the fuel tank 19.
3, and lower threaded part 21b of mounting bolt 20.
is inserted into the insertion hole 23a and the mounting hole 19b of the rubber 23, and in this state, the reinforcing member 25 is attached to the lower threaded portion 21b by aligning its mounting hole 24a, and finally, the double nut 26 is inserted so that the rubber 23 is in the specified position. This is done by screwing to the desired thickness. At this time, the locking portion 22a of the collar member 22 is attached to the flange portion 1.
Since it is locked to the tip of the bolt 9a, the mounting bolt 20 will not spin idly.

Then, the fuel tank 19 with the mounting bolts 20 attached is mounted on the mounting bracket 12 on the assembly line.
To attach the fuel tank 19 to the cross member 12b, place the fuel tank 19 between the cross members 12b so that the upper threaded part 21a of the mounting bolt 20 is inserted into the mounting hole 12d of the mounting bracket 12c, and in this state, insert a washer into the upper threaded part. Attach 27 and tighten the mounting nut 28
to screw on. Then, this causes the fuel tank 19
is supported by the mounting bracket 12c via the rubber 23, so that the tank 19 is rubber mounted. In addition, this fuel tank 19
After the installation, the box 14 is installed on the vehicle body frame 12.

Next, when removing the fuel tank 19 for service, loosen and remove the double nut 26, and in this state, tighten the flange portion 19 of the fuel tank 19.
When the fuel tank 19 is lowered so that the mounting hole 19c of the fuel tank 19b is removed from the lower threaded portion 21b of the mounting bolt 20, the fuel tank 19 is removed from the vehicle body frame 12.

As described above, in this embodiment, the mounting bolt 20 is sub-assembled to the fuel tank 19 by the double nut 26 using its collar material 22, its locking part 22a, and lower threaded part 21b, and then the fuel tank 19 to the upper threaded part 21 of the mounting bolt 20
Since the fuel tank 19 is attached to the mounting bracket 12c of the vehicle body frame 12 using the bracket 12a, the mounting bolt 20 does not slip during sub-assembly, making sub-assembly easy. It is only necessary to tighten the mounting nut 28 on the upper side of the mounting bracket 12c, and the mounting work can be easily performed.
Furthermore, during service, the fuel tank can be removed by loosening the double nut 26 from below.

In the above embodiment, the case where the collar member 22 is provided with the locking portion 22a and the reinforcing member 24 is provided below the flange portion 19a has been described. is not necessarily necessary.

Further, in the above embodiment, a case has been described in which the fuel tank 19 is installed below the box 14, but the present invention can of course be applied to a case where the fuel tank is installed below the cabin 13.

[Effect of idea]

As described above, according to the vehicle fuel tank mounting device according to the present invention, the mounting bolt has a collar portion in the center and threaded portions on both sides thereof, and the mounting bolt is connected to the lower threaded portion of the mounting bolt. Attach the flange part of the fuel tank to the flange part of the fuel tank via an elastic member using a double nut using the flange part, and attach the flange part to the tank mounting part of the vehicle body frame by using the mounting nut using the upper threaded part of the mounting bolt and the flange part. When installing the fuel tank, all you have to do is tighten the mounting nut on the upper side of the tank mounting part, which improves the workability of the installation.Furthermore, during service, the fuel tank can be removed by loosening the double nut from below. There is an effect that can be done.

[Brief explanation of drawings]

FIG. 1 shows a vehicle fuel tank mounting device according to an embodiment of the present invention, and FIG. 1a is a sectional view thereof;
Fig. 1b is an exploded perspective view thereof, Fig. 2 is a side view of a vehicle to which the above embodiment is applied, Fig. 3 is a perspective view of the fuel tank portion of Fig. 2, and Fig. 4 is a conventional vehicle fuel tank. FIG. 5 is an exploded view showing a tank mounting device, and FIG. 5 is an exploded view showing a modification thereof. 11...Vehicle, 12...Vehicle frame, 12c
...Tank mounting part (mounting bracket), 13...
Cabin, 14... Box, 19... Fuel tank, 19a... Flange part, 19b... Mounting hole in flange part, 20... Mounting bolt, 21a... Upper threaded part, 21b... Lower threaded part, 22 ...Brim portion, 23...Elastic member (rubber), 26...Double nut, 28...Mounting nut.

Claims (1)

[Scope of utility model registration request] A device for attaching a fuel tank to a tank mounting portion of a vehicle body frame of a vehicle in which a cabin or a box is mounted on the vehicle body frame, wherein a collar is formed in the center and threaded portions are formed on both sides of the collar. A mounting bolt is attached to the mounting hole of the flange portion of the fuel tank from above via an elastic member, and a double nut for holding the flange portion of the fuel tank is attached to the threaded portion on the lower side of the mounting bolt. A mounting device for a fuel tank for a vehicle, characterized in that a mounting nut for clamping a tank mounting portion of the vehicle body frame is attached to an upper threaded portion of the mounting bolt.