JPH04123717U - Fuel tank mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a fuel tank support structure that is lightweight and simple in structure while increasing the tank capacity as much as possible. [Structure] A pipe member 17 having an inner diameter larger than the outer diameter is fitted onto a pair of left and right support rods 13 extending cantilevered from the fuselage frame, and the tank flange portion 15 is tightened and fixed with a nut 16. Arc-shaped recesses 20 formed on both sides of the tank 11 are received and supported by the outer peripheral surface of the pipe member 17.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is useful for fuel tanks placed between the front and rear wheels of riding-type work machines, for example. Regarding the mounting structure.

0002

[Conventional technology]

In the above-mentioned fuel tank mounting structure, conventional A boss part is formed by penetrating the fuel tank with a pair of support rods extending through the fuel tank. There was one that was designed to be inserted through the tank to support the tank.

0003

[Problem that the idea aims to solve]

Although the above conventional structure has the advantage of being able to firmly support the fuel tank, The structure is such that the boss part is formed through the inside of the fuel tank, so it is difficult to process it. This has the disadvantage of increasing production costs and reducing tank capacity. There was also the negative effect of decreasing the amount. The present invention aims to solve the above-mentioned problems.

0004

[Means to solve the problem]

The characteristic structure of this invention is that a pair of left and right support rods extend from the fuselage frame in a cantilevered manner. The threaded part formed at the tip of this support rod is connected to a fuel tank made of synthetic resin. between the body frame and the flanges. , a pipe member having an inner diameter larger than the outer diameter of the support rod is attached to each support rod. Interpose it so that it fits externally and tighten and fix it with a nut, and then attach it to the outer circumferential surface of this pipe member. and configured to receive and support arcuate recesses formed on both sides of the fuel tank. There is a certain point.

[0005]

[Effect]

The flange formed on the mating surface as a result of constructing the fuel tank with synthetic resin material The large-diameter part is screwed onto each support rod, and the large diameter The large contact area on the outer circumferential surface of the pipe member allows it to receive the arcuate recesses on both sides of the tank. It stops and supports it. Moreover, both ends of the pipe member are connected to the fuselage frame. It is tightened and fixed with a nut while it is in contact with the hinge part, so it is not attached to the aircraft frame. It can also be used as a positioning member for positioning the fuel tank in the vertical direction. Each of the above support rods has a large contact area for supporting abutting parts, while maintaining the tank weight The fuel tank should have the minimum outer diameter that can support it, and the fuel tank should be slightly recessed on both sides. You can handle it by yourself.

[0006]

[Effect of the idea]

Therefore, rational structural improvements should be made while increasing the capacity of the fuel tank as much as possible. As a result, the overall structure is lightweight and simple, without using a large-diameter support frame. The fuel tank support structure was constructed using this structure.

[0007]

【Example】

Examples will be described below based on the drawings. Figure 3 shows a riding lawn mower. This lawnmower is mounted on the front of the riding type vehicle. The mower 2 is connected via a link mechanism 1, and the traveling body has a control panel at the front. 3, a driving unit 4 is arranged at the rear, and a pair of left and right front wheels 5 of a non-steering type are provided. , 5 and a pair of left and right steering type rear wheels 6, 6.

[0008] A drive unit for driving the mower 2 is located at the left and right center position of the driving unit step 7 in the operating unit 3. In order to carry out maintenance work on the transmission system, there is an opening that can swing freely around the rear horizontal axis X. A closing part 8 is provided, and a tool storage member made of an elastic material is provided on the back side of this opening/closing part 8. 9 is installed.

[0009] Then, a combustion flame is placed below the left front wheel fender 10 between the front and rear wheels 5 and 6. A fuel tank 11 is provided. Below is the installation structure of this fuel tank 11. explain. As shown in Figures 1 and 2, it extends along the longitudinal direction of the aircraft and has a U-shaped cross section. From the left side of the pair of left and right fuselage frames 12 formed into the shape, one pair each for the top and bottom Support rods 13 are provided in a cantilevered manner toward the outer side of the fuselage, and these support rods 1 3 to support the fuel tank 11. The fuel tank 11 is It is manufactured by blow molding a synthetic resin material. The base end of each support rod 13 is , a fuselage frame 12 and an L-shaped connecting member 14 fixedly connected to the fuselage frame 12. It is constructed to provide strong support over a long span. and each support rod. A threaded portion 13a is formed at the tip of the door 13, so that it can be used when molding the fuel tank 11. The flange portions 15 on both sides of the mating surface portion are connected to the threaded end portions of each of the support rods 13. 13a and is tightened and fixed with a nut 16. That is, the connecting member 1 4 and the flange portion 15 has an inner diameter larger than the outer diameter of the support rod 13. A collar 17 as a pipe member is interposed on the support rod 13 in a state of being fitted externally, and the collar The flange portion 15 is fastened and fixed to the body frame 12 via a roller 17.

0010 The lower outer surface side of the fuel tank 11 is covered with a metal protective cover 18, so that it can be used when driving on rough terrain. This is designed to reduce the risk of damage caused by contact with ridges or the like. This protective cover -18 is formed into a U-shape when viewed from the side, and has brackets 19 provided on the outer surfaces of both the front and rear sides. It is fastened together with the flange portion 15 via the flange portion 15.

[0011] The upper left and right support rods 13 support the fuel tank 11 on both front and rear sides. An arcuate recess 20 having a shape along the outer diameter of the collar 17 is formed in each collar. -17 is configured to receive and support the arc-shaped recess 20. Two Therefore, each support rod 13 is provided so as to slightly enter the arc-shaped recess 20, and the arc-shaped recess The large contact surface between the portion 20 and the collar 17 allows the fuel tank 11 to be placed and supported. It is configured. In this way, without sacrificing the capacity of the fuel tank 11, and with a small diameter Supporting the fuel tank 11 stably with a large contact area by the support rod 13 has become possible.

0012 In addition, symbols are written in the claims section of the utility model registration to facilitate comparison with the drawings. However, the present invention is not limited to the configuration shown in the attached drawings.

[Brief explanation of drawings]

[Figure 1] Cutaway front view of fuel tank mounting part

[Figure 2] Cutaway side view of fuel tank mounting part

[Figure 3] Overall side view of lawn mower

[Explanation of symbols]

12 Airframe frame 13,13 Support rod 13a, 13a threaded part 15,15 Flange part 16,16 nut 17,17 Pipe member 20, 20 Arc-shaped recess

Claims (1)

[Scope of utility model registration request] Claim 1: A pair of left and right support rods (13), (13) are extended in a cantilevered manner from the fuselage frame (12), and threaded portions are formed at the tips of the support rods (13), (13). (13a), (13a) are inserted into the flanges (15), (15) on both sides of the fuel tank (11) made of synthetic resin material, and the fuselage frame (12) and the flanges (15), (15) ) between the support rod (1
3) Pipe members (17), (17) having an inner diameter larger than the outer diameter of (13) are attached to each support rod (13), (1
3) with the nuts (16) and (1) interposed so as to fit externally.
6), tighten and fix this pipe member (17), (1
7) A fuel tank mounting structure configured to receive and support arc-shaped recesses (20), (20) formed on both sides of the fuel tank (11) by the outer circumferential surface of the fuel tank (11).