JP2580719B2 - tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automobile or a construction having a frame structure such as a chassis frame including a pair of frame members having upper and lower projecting pieces respectively spaced apart from each other. The present invention relates to a tank suitable for use in industrial machines such as machines and agricultural machines.

[Prior Art] Tanks generally installed in automobiles and industrial machines and the like, particularly tanks a for storing liquid fuels such as gasoline and light oil, are:
Although the shape is slightly modified in consideration of the installation location and the tank volume, etc., as shown in Fig. 57 and Fig. 58, a roughly rectangular Is formed. The tank a is formed by press-forming a steel plate material subjected to rust prevention treatment or the like to form a press-formed product b serving as a tank component, and welding and joining the press-formed products b. ing. In order to further ensure the function of the tank a, as shown in FIG. 59, the tank a is provided with a fuel inlet k, a cap c, a fuel inflow pipe d, a fuel remaining amount detecting device e, an evaporator system. , Breather pipe g, fuel outflow pipe h,
A return fuel inflow pipe i, a strainer j, a rollover valve r for preventing fuel outflow when the vehicle falls down, a baffle plate f, and the like are provided. Some of these facilities are omitted depending on the type of fuel, vehicle, and machine type.For example, in a fuel tank a of a truck or a machine equipped with a diesel engine using light oil as a fuel,
No evaporator system, breather pipe, and rollover valve are installed, and a drain 1 for internal cleaning is provided.

On the other hand, as shown in FIGS. 60 and 61, the arrangement of the tank a is such that the fuel injection section k for securing the attachment property and refueling work can be installed on the outside of the vehicle body and the machine as much as possible. It is installed so as to protrude outside a frame material m such as a chassis frame. As the mounting structure, for example, as shown in the figure, an L-shaped bracket n extending outside the frame material m and holding the tank a and a steel band p surrounding the tank a and surrounding and holding the tank a are provided. To tank a
Is to be installed. Here, q is a cushion rubber provided between the tank a and the bracket n and the band p. Actually, the structure shown in FIG.
Are provided at two different locations in the longitudinal direction.

[Problems to be Solved by the Invention] Since the conventional tank a is made of a steel plate, there are the following problems.

Since the steel plate tank a was heavy, the mounting workability was not good. In addition, as for the frame member m to which the steel plate tank a is attached, it is necessary to increase the strength of the frame member m itself to support heavy weight, and to secure the rigidity of other attachments such as the bracket n. Due to the above safety aspects, the weight of the vehicle body and the whole machine was increased. Furthermore,
The effect of the increase in weight due to the adoption of the steel plate tank a has also led to a decrease in fuel efficiency and power performance.

The steel plate tank a is made of a surface-treated steel plate for the purpose of rust prevention, and its outer surface is painted. By the way, the inner surface is easily corroded by water entering the tank a, and depending on the type of fuel (alcohol or the like), the inner surface has to be subjected to a surface treatment for fuel.
On the other hand, with respect to the outer surface, in the case of a vehicle or the like, the coating film or surface treatment is damaged by a stepping stone from a wheel, or the surface treatment or the coating film of a welded portion between the press-formed products b is inferior to other portions. In addition, there has been a problem that sufficient rust prevention performance cannot be ensured due to, for example, insufficient adhesion of the coating film as a feature of the surface-treated steel sheet material. Here, in order to avoid such problems and ensure sufficient quality,
Manufacturing costs including material costs, investment in manufacturing equipment, and management / inspection costs will increase.

Therefore, it is conceivable to employ a plastic tank instead of a steel plate in order to provide a high quality and low cost product in response to the problems of weight reduction and corrosion.

However, even if a plastic tank is used, the following problems in the conventional mounting structure cannot be fundamentally solved, and the problem of the use of a plastic tank in particular is a concern.

Conventionally, when the tank a is installed inside the frame member m, the mounting property and the refueling workability deteriorate, so the tank a is installed outside the frame member m. For example, in a vehicle, a frame member m constituting a chassis frame is disposed at the center in the vehicle width direction. In such a case, the tank a
In this case, it is necessary to balance the weight in the left and right directions in the vehicle direction, and the mounting positions of other components and devices to be installed are limited.

Further, the outside of the frame material m is an effective place to provide various auxiliary devices from the viewpoint of the mounting property, but the installation of the tank a interferes with the tank a, so that these devices cannot be properly installed. Was.

On the other hand, installing the tank a, especially the fuel tank a, outside the frame material m increases the portion exposed to the outside from the vehicle body or the machine main body, makes it easy to be exposed to sunlight, rainwater, etc., and reduces its appearance and durability. It is difficult to secure them, so that high quality materials such as paints and accessory parts are required, and there is a problem that the cost is increased.

Further, arranging the tank a outside the frame member m is directly affected by a collision force at the time of a collision, and is apt to be mischievous.

A related technology is the “fuel tank protection structure for automobiles” in which a fuel tank is installed between frames (see “
No. 137623) has been proposed, but this merely provides a tank between the frames, and various improvements are required in terms of securing the required tank capacity and mounting in the case of installing between the frames. Conceivable.

Means for Solving the Problems According to the present invention, the diagonal line of the cross section has a dimension shorter than the overhanging piece interval so as to be inserted between a pair of frame members having upper and lower overhanging pieces at intervals, In order to be rotated between the frame members and spanned between the frame members, the longitudinal section width is formed to have a dimension longer than the interval between the overhanging pieces.

[Operation] Next, the operation of the present invention will be described. The tank is formed by a cross-section diagonal dimension shorter than the overhanging piece interval of each of the pair of spaced frame members and a vertical cross-sectional width dimension longer than the overhanging piece interval. The formation ensures the insertion of the tank between the frame members and the attachment of the tank in the form of bridging between the frame members.

Embodiments Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

In the description of the embodiment, as shown in FIGS. 10 to 13, a pair of frame members having a chassis frame 1 such as a medium-sized or large truck as a pair of frame members having upper and lower overhanging pieces at intervals. The channel-like side member 2 is exemplified.
As can be understood from the plan view and the side view shown in FIGS. 10 (I) and (II), respectively, the chassis frame 1 extends along the longitudinal direction of the vehicles juxtaposed at intervals in the vehicle width direction. And a plurality of cross members 3 arranged at intervals in the longitudinal direction of the vehicle to connect the side members 2 to each other.

In particular, as shown in FIGS. 11 to 13, the pair of side members 2 are made of a channel material having a U-shaped cross section having upper and lower webs 4, 5 which are vertically projecting pieces, and are partitioned by the upper and lower webs 4, 5. Channel portions 6 are arranged side by side so as to face each other. The cross member 3 has both ends at the channel portions 6.
It is sandwiched between upper and lower webs 4 and 5 and joined, and is bridged between the side members 2 to join the side members 2 to each other.

In FIG. 10, reference numerals 7 and 8 denote mounting positions of the front suspension and the rear suspension, respectively.

Between the pair of side members 2 configured as described above, a tank is provided at an appropriate position in the longitudinal direction of the vehicle as shown in FIGS. 3 to 5, and a fuel tank 9 is provided as an object of this embodiment. .

1 to 9 show the shape and mounting condition of the main tank 9, FIG. 1 is a plan view, FIG. 2 is a bottom view, FIG. 6 is a front view, and FIG. 7 is a side view. 8 and 9 are sectional views taken along lines MM and HH in FIG. 1, respectively, and FIGS. 3 to 5 show the mounting operation state. The tank 9 is inserted obliquely between the side members 2 and then horizontally rotated between the side members 2 for installation. The tank 9 has a shape and size satisfying each requirement. That is, the diagonal line of the cross section is formed to be shorter than the web interval so that the pair of side members 2 can be inserted obliquely from above from above, and is inserted between the side members 2 and then rotated. In this case, the longitudinal section width along the vehicle width direction is formed to be longer than the web interval.

More specifically, with regard to the point of inserting and mounting with inclination,
In the cross-sectional structure between the side members 2, one of the side members 2 can be arranged to be inclined between these side members 2, and is provided with a dimension longer than the web spacing A ₁ so as to bridge between the side members 2. diagonal dimension K ₁ connecting the edge portion 4a of the base end portion 5a and the upper web 4 other side member 2 below the web 5 as well, arranged to be inserted between these side members 2 state by tilting the tank 9 is dimensionally a ₁ on web 4a interval capable of, the tank 9 is slightly shorter dimension W ₁ than these dimensions K _1, a _1,
It is formed in a V _1. These dimensions W ₁ and V ₁ are the maximum expansion portion of the tank 9 in the inclined insertion state, the external dimensions of the bottom surface of the tank 9 in the illustrated example and the portion located between the upper webs 4 in the inclined state, and one side member 2 in the illustrated example. Dimensions between a lower portion 9a on one side of the tank passing through the edge 4a of the upper web 4 and an upper portion 9b on the other side of the tank located on the edge 4a of the upper web 4 of the other side member 2 ( Diagonal dimension)
It is given as V _1.

As other incidental dimension (angle), a tank side 9c that passes an edge portion 4a of the upper web 4 of one of the side members 2, to have an angle theta ₁ which does not interfere with the upper web 4, the inclined state and the like have an angle theta ₂ to the tank side 9d on the lower web 5 does not interfere with the channel inner surface 6a in.

In installing this manner the constructed tank 9 between the side members 2, insert the tank side 9d having an angle theta ₂ which does not interfere with the channel inner surface 6a between the upper and lower webs 4,5, tanks followed opposite The side 9c is inserted so as to fall between the side members 2.

In this way, the tank 9 has its maximum expanded portion (in the figure, the bottom surface of the tank 9) hung between the lower webs 5,
It will be bridged between the side members 2.

For the next installation rotated, the longitudinal sectional width that is matched to the vehicle width direction by the rotation has a longer dimension Y ₁ than the distance A ₁ of the lower web 5 in order to support spanned between the side members 2 , And both end portions 10 to be hung on the lower web 5
There is formed at a lower outer dimensions than the height D ₁ of the between the upper and lower webs 4,5.

Other restrictions on external dimensions include longitudinal cross-sectional width
Y ₁ is required to be within the dimensions B ₁ between the cross member 3. More specifically, the tank 9 has a side surface portion 9e defined by a transverse cross section and a side surface portion 9f defined by a vertical cross section, and has a relative corner among four corners connecting these portions 9e and 9f. A pair of corners at opposite (point symmetry) positions have substantially long external dimensions so that the tank 9 can be rotated between the side members 2.
It is formed as arc-shaped portion 9g of an arc drawn by a radius 1 / 2Y ₁ 1/2 in Y _1. The other pair of corner portions 9h in order to restrict the rotation of the tank 9 between side members 2, the channel portion interior surface distance C ₁ (long Dimensions Y ₁₎ longer dimension than Q ₁
Is formed. When the tank 9 thus configured is rotated and installed between the side members 2, the arc-shaped portion 9g
The tank 9 is rotated so that. Thus by rotating Finally, corners 9h having a long dimension Q ₁ than the channel portion interior surface distance C ₁ is the rotation at the point to be rotationally displaced in the channel portion 6 is regulated. In this case, the cross-sectional direction of the tank 9 is aligned with the longitudinal direction of the side member 2, and the longitudinal cross-sectional direction is aligned with the interval direction (vehicle width direction) of the side member 2, and both ends 10 of the tank 9 have the lower web. Hung over 5,
It will be bridged between the side members 2. here,
Both ends 10 to be hung on the lower web 5 are upper and lower webs 4,5
It is formed with a dimension lower than the inter-distance height D ₁ and is accommodated in the channel portion 6. And specific values examples of the tank 9, if the size of such side member 2 is given as follows, A ₁ = size of _{650mm C 1 = 788mm D 1 =} 225mm tank 9 as an example, as follows Can give.

W ₁ = 730 mm Y ₁ = 780 mm By the way, as a material of the fuel tank 9 installed between the side members 2 as described above, polyethylene, polyethylene or the like is used in view of securing its shape (formability), quality, and cost. Use a plastic material that is stable against fuel such as nylon or saturated polyester resin alone or use a blend of these materials and mold it into a single layer or multiple layers by a general plastic molding method such as blow molding. Is preferred. Although it is desirable that the tank 9 is integrally formed, it may be formed by welding, bonding, or the like as a component configuration.

Next, a structure for fixing the tank 9 between the side members 2 will be described with reference to FIGS. 14 to 18. FIG.

When mounting and fixing the tank 9, the side member 2
In addition to suppressing vertical play, horizontal play, and front-to-back play in the channel portion 6, the rotation of the tank 9 that is rotated and installed is regulated.

As shown in FIGS. 14 to 16, the vertical play is regulated by disposing a bracket 13 having a step δ diagonally between the side members 2 below the tank 9 along the diagonal direction. Done. The bracket 13 has a central portion 13b abutting against the bottom surface of the tank 9 with respect to both end mounting portions 13a mounted from below on the lower web 5 of the side member 2.
Is raised with a step δ, as shown in FIG. 17, the tank 9 is pushed upward at the central portion 13b having the step δ, and both ends 10 of the tank are lifted above the lower web 5 and pressed against the upper web 4. The upper web 4 is sandwiched between the upper web 4 and the upper web 4 to fix the upper web 4.

The center portion 13b of the bracket 13 and the upper web 4
A cushioning material 14 having a considerable contact area is interposed between the lower surface of the tank 9 and the outer wall of the tank 9.

As shown in FIGS. 14 and 17, the lateral play is controlled by a band-shaped buffer having a considerable length interposed between the inner surface of the channel portion 6 of each side member 2 and the outer wall of the tank 9 as shown in FIGS. It is performed by the material 14.

Further, as shown in FIG. 14 and FIG. 18, the backlash in the front-back direction and the rotation are regulated by a bracket 15 which is continuously stretched between the side members 2 along the outer wall of the tank 9 and the bracket 15. And a bracket 16 which is engaged with a corner 9h of the tank 9 on the opposite side of the tank 9 between them. One bracket 15 is formed in a flat plate shape so as to be in close contact with the outer wall of the tank 9, and is fixed to each side member 2 at both ends folded portions 15 a. The other bracket 16 is formed in an L-shape, and a piece 16a along the outer wall of the tank 9 abuts on a corner 9h of the tank 9 and is fixed to the side member 2 by a folded piece 16b. These brackets 15 and 16 sandwich the tank 9 from the front-back direction of the side member 2 and regulate play in the front-back direction. In addition, the return of the rotation of the tank 9 when the corner 9h of the tank 9 is separated from the channel section 6 is as follows.
The corner 9h is regulated by being engaged with these brackets 15 and 16 and held in the channel portion 6.
Therefore, one bracket 16 is formed so as to correspond only to the corner 9h, and the arc-shaped portion 9g side is omitted. Note that a buffer member 14 having a considerable length is interposed between the brackets 15, 16 and the outer wall of the tank.

Next, the structure for refueling the tank 9 will be described with reference to FIGS. 19 to 23.

FIG. 19 shows the basic configuration. Tank 9
Is installed inside the chassis frame 1 between the side members 2 and the rear body 18 is installed on the side members 2 via the joists 17, so that it is located in a space shielded from the outside. . On the other hand, the oil supply system 19 needs to be able to supply oil to the tank 9 from the outside. In this embodiment, the oil supply system 19 extends outward through an opening 20 formed in the side member 2. You. At this time, regarding the refueling system 19,
It should be located below it so as to cover it with the rear body 18 so as not to be exposed to the outside, and the oil supply port 21 should be located higher than the tank 9 in order to secure a sufficient amount of oil to fill the tank 9. In order to install the joists 17 and the rear body 18 after the installation of the tank 9 and the installation of the oil supply system 19 in the process, it is considered to install the joists 17 and the rear body 18 at positions not interfering with these rear bodies 18.

The refueling system 19 mainly includes an inflow pipe portion 22 integrally formed with the tank 9, a pipe 23 extending to the outside of the side member 2 through the opening portion 20, and connects these pipes 23 and the inflow pipe portion 22. And a cap 25 for opening and closing the oil supply port 21 at the end of the pipe 23. The inflow pipe section 22 is
As shown in FIGS. 19 to 21, the opening 20 of the side member 2 is formed.
In particular, as shown in FIG. 22, the shape of the tank 9 near the inflow pipe portion 22 is such that the connection operation with the hose 24 can be performed without interfering with the side member 2.
The other part (indicated by a broken line in the figure) is partially formed with a recess 26. The hose 24 has a two-layer structure of a general outer layer chloroprene rubber and an inner layer NBR, or a single layer structure made of a blend material of polyvinyl chloride and NBR. The hose 24 of the present embodiment is disposed between the strong side members 2 and has no fear of breakage or the like, so that reinforcement by a wire blade used in a passenger car or the like is unnecessary. And this hose 24
As shown in FIG. 23, both ends are tightened to the inflow pipe portion 22 and the pipe 23 by a general hose band 27,
The two are connected.

As shown in FIGS. 19, 23 and 24, the pipe 23 extends outward from the space between the side members 2 through the opening 20 and has a refueling port 21 at a distal end. A bracket 28 having an L-shaped cross section is fixed at an appropriate position on the outer peripheral side of the pipe 23, and the bracket 28 is fixed to the side member 2 by being attached to the side member 2. In particular, when this pipe 23 is refueled by inserting a refueling gun,
Tank 9 with a liquid amount that has a suitable space secured between the tip of the gun
Is formed in an appropriate length and shape so that the tank becomes full. In addition, as a general structure, the filler port 21 of the pipe 9
A groove 30 for guiding the hook portion 29 of the cap 25 to enter, an annular flange portion 31 for engaging the hook portion 29 and guiding its rotation, and a hook protruding from the flange portion 31 and rotating along the flange portion 31. A stopper portion 32 for stopping the portion 29 is formed. On the other hand, as shown in FIGS. 23 and 25, the cap 25 has a cap cover 33 forming an outer shell and an inner cap 35 to which a holder 34 having a hook portion 29 is fixed, and a holder 34. An annular seal rubber 36 which seals the periphery of the oil supply port 21 of the pipe 23 is sandwiched between the inner cap 35 and the inner cap 35. Incidentally, the cap 25 may be provided with an air breather for preventing the inside of the tank 9 from becoming negative pressure during fuel supply.

Next, an outlet for discharging fuel from the tank 9 to an engine or the like and a return structure for returning excess fuel to the tank 9 will be described with reference to FIGS. 26 to 29. In this embodiment, since these have the same structure, the structure of the outlet will be described as an example.

As shown in FIG. 26, a connector 37 is provided at the upper wall of the tank 9 so as to penetrate the tank 9 and form a fuel outlet path inside and outside the tank 9. As shown in FIG. 27, in this connector 37, a vent pipe 38 and a mounting flange 39 are integrally formed of the same material as the tank 9, and the mounting flange 39 is joined to the tank 9 by hot plate welding or the like. Fixed. As shown in FIG. 28, the connector 37 has an inner end 37
A pipe 40 inserted deep into the tank 9 is engaged and connected to a, and a hose 41 is connected to the tank outer end 37b. For attachment, a pipe 40 is connected to the connector 37 in advance, the pipe 40 is inserted into the tank 9, and then the connector 37 is joined to the tank 9. Thereafter, the tank 9 is fixed between the side members 2, and finally, the hose 41 and the connector 37 are fixed by a general band clip 42 as shown in FIG.
And will be connected. Although not shown, the pipe 40
In general, a strainer (for preventing foreign matters and moisture in fuel in cold regions from being absorbed by sherbet) is attached to the lowermost portion.

Next, a mounting structure of a liquid meter or the like will be described with reference to FIGS.

As shown in the drawing, an opening 43 is formed in the tank 9 by piercing a mounting portion, and a bolt 45 is mounted around a peripheral portion 44 of the opening 43 at appropriate intervals along the circumferential direction. The ring-shaped reinforcing plate 46 is fitted by insert molding or the like at the time of forming the tank 9. A seal ring 47 is fitted around the periphery of the opening 43 inside the reinforcing plate 46. When mounting a liquid meter or the like, a unit such as a sealed liquid meter is inserted into the tank 9 through the opening 43 and the reinforcing plate 46 is inserted.
What is necessary is just to fix to. Note that this structure can be applied to the drain portion. In addition, by integrating the outlet and return structures with a liquid meter or the like, the work of mounting various parts can be simplified.

As described above, the side member 2 disposed at the center in the vehicle width direction after the configuration such as the oil supply structure is supported.
Since the tank 9 is arranged in between, it is possible to easily and accurately secure the right and left weight balance in the vehicle width direction,
Therefore, it is possible to rationally and efficiently mount other components and devices to be installed.

In addition, the outside of the effective side member 2 can be sufficiently secured as a mounting space from the viewpoint of convenience in mounting various devices.

In addition, the space between the side members 2 is a space shielded from sunlight, rainwater, and the like, and the environment is relatively gentle. Therefore, the appearance and durability can be sufficiently secured, so that material costs and the like can be reduced. In the case of a tank, the temperature fluctuation due to solar radiation is small, so that the fuel temperature can be kept constant.

Further, the tank 9 is protected between the side members 2 having high rigidity, so that the tank 9 is hardly damaged even at the time of collision or the like, so that safety can be improved.

By disposing the tank 9 between the side members 2, the introduction of the plastic tank 9 can be achieved. As a result, it is possible to reduce the weight of the tank 9 and the peripheral parts due to the weight reduction,
Power performance can be fully exhibited.

In addition, since the plastic tank 9 is free from corrosion, it is possible to eliminate the surface treatment and the rust preventive treatment such as painting required for the improvement of durability and long-term use, and to reduce the production cost and the material cost. Can also.

In this embodiment, in order to increase the tank capacity with respect to the shape of the tank 9, the tank portion 9 m which is always positioned between the side members 2 at the time of insertion and in a state where the tank 9 is rotated and spanned between the side members 2. Is formed by bulging downward. By doing so, a sufficient tank capacity can be secured. At this time, the bulging part 9m
Is formed in a form in which an interference portion is cut out so that interference with the side member 2 and interference with the propeller shaft do not occur.

In the present embodiment, a portion 9n serving as a fulcrum of dropping at the time of oblique insertion is formed in a spherical shape, and the smoothness of the work is enhanced.

In addition, since the main tank 9 is inserted at an angle, the tank 9 is inserted between the side member 2 for insertion as compared with a case where the main tank 9 is inserted and rotated in a horizontal state as shown in FIG. In this case, the clearance Z required for the above can be omitted, the cross-sectional width can be formed wider, and more tank capacity can be secured. When inserting and rotating, the tank 9 is hung until both ends 10 hang on the lower web 5 in order to secure the clearance Z between the side member 2 at the time of insertion and rotation in FIG. Although it is necessary to support the tank 9 by hand or hold it by hand, the tank 9 can be supported by the lower web 5 in accordance with the insertion work, and the workability is good.

Further, since the main tank 9 is arranged to be further rotated after being inserted, the horizontal cross-sectional width is relatively small when the tank 9 is simply inserted while being inclined as shown in FIG.
Unlike the type exerted shallow between the lower web 5 W ₁ is kept short, it is possible to apply deep down web 5 in longitudinal section width Y ₁ are formed longer, so as to ensure the reliable of the fixed support Has become.

By the way, the tank 9 according to the present invention has a diagonal line of a cross section shorter than the interval between the overhanging pieces so as to be inserted between a pair of frame members each having an upper and lower overhanging piece at an interval. Various outer shapes other than the above-described embodiment and modified examples are included as long as the vertical cross-sectional width is longer than the interval between the overhanging pieces so as to be rotated and spanned between the frame members. In addition, from the viewpoints of strength, molding die, mounting fixability, and the like, those having irregularities formed on the surface are also included.

FIGS. 33 to 40 show modifications of the oil supply structure. In the lubrication structure shown in the above embodiment (see FIGS. 19 and 23), the pipe 23 extending from the space between the side members 2 to the outside of the side members 2 is made of a steel plate or the like and is formed rigidly. Therefore, if the pipe 23 is attached to the inflow pipe portion 22 of the tank 9 in advance, the pipe 23 interferes with the side member 2 when the tank 9 is rotated and cannot be rotated to an appropriate position. Then, after the tank 9 is rotated and installed, the pipe 23 is installed. However, this is a problem because the pipe 23 is installed in a narrow space between the side members 2 and between the upper and lower webs 4 and 5.

Here, the present modification utilizes a recess 26 around the inflow pipe portion 22 of the tank 9 and can be accommodated in the recess 26 and extendable to the outside of the side member 2 so as to be able to extend and contract or to extend and contract. (See Fig. 35).

With this configuration, it is possible to attach the pipe 58 with the cap 25 attached thereto in a wide place in advance to the inflow pipe portion 22 before the operation of inserting the tank 9 between the side members 2, and together with the tank 9. Installation work can be performed, and workability can be improved. Also, in the recess 26 of the tank 9,
As shown in FIGS. 33, 34, 39 and 40, in order to maintain the contracted or bent state of the pipe 58, a cap is provided.
Engagement projections 59 for engaging and holding 25 and the like and maintaining the pipe 58 in the recess 26 are integrally formed.

If the pipe 58 approaches the opening 20 of the side member 2 by rotating the tank 9, then the pipe 58 is drawn out of the side member 2. Then Figures 36 to 38
As shown in the figure, a fixing bracket 60 provided on the pipe 58 is joined to the side member 2 or fastened and fixed with a bolt and nut.

FIGS. 41 to 43 show modifications of the mounting and fixing structure. In this modification, the fixing structure is rationalized by using a cross member 3 having a U-shaped cross section provided between the side members 2. The tank 9 spanned between the side members 2 is slid in the front-rear direction along the channel portion 6 to the position of the cross member 3 as it is, and the inner surface 3a and the lower flange 3b of the cross member 3 and the inner surface 6a of the channel portion of the pair of side members 2 are formed. And the lower web 5 performs positioning and support of the tank 9. In this case, the play in the vertical direction is controlled by the cross member 3 side and the corner 9h on the opposite side. On the cross member 3 side, as shown in FIGS. 41 and 43, the cross member 3 is appropriately disposed along the longitudinal direction of the upper flange 3c of the cross member 3 on the upper surface of the tank 9 to press the tank 9 toward the cross member 3. The tank 9 is divided into the upper and lower flanges 3b, 3c of the cross member 3 by the claw body 63 fitted into the upper flange 3c with the cushion member 14 interposed between the lower surface of the tank 9 and the lower flange 3b of the cross member 3. The play is regulated by being sandwiched between them. On the other hand, a cross-section L having a bent portion 64a facing the lower web 5 is provided at a corner 9h opposite to the cross member 3.
A letter-shaped bracket 64 is attached, and the tank 9 is sandwiched between the bent portion 64a and the lower web 5 so as to be fixed vertically.

In addition, the play and rotation in the front-rear direction are regulated by sandwiching the tank 9 between the cross member 3 and a bracket 64 having a vertical portion 64b opposed thereto. In addition, 14
Is the outer wall of the tank 9, the inner surface 3a of the cross member, and the side member 2.
Is a cushioning material interposed between the upper and lower webs 4, 5 and the bracket 64 to prevent backlash.

FIGS. 44 to 54 show a structure in which the center of rotation is structurally secured when the tank 9 is rotated and mounted.

As shown in FIGS. 44 and 45, between the lower webs 5 of the side members 2 where the tank 9 is to be mounted, a rotation control bracket 66 is provided so as to extend over these. The bracket 66 has an upwardly projecting portion 67 corresponding to a substantially central position between the side members 2. On the other hand, as shown in FIGS. 46 and 47, a concave portion 68 which engages with the convex portion 67 of the bracket 66 is formed in the bottom of the tank 9 at the rotation center position thereof. And these recesses 68
By engaging the projections 67 with each other, the position of the tank 9 between the side members 2 when the tank 9 is inserted between the side members 2 is set, and the rotation center in the subsequent rotation work is set. Has become. And the second
As shown in FIGS. 48 to 50, the tank 9 is
By inserting the concave portion 68 and the convex portion 67 into each other and rotating the tank 9 around the concave portion 68 and the convex portion 67, the tank 9 can be smoothly and accurately spanned between the side members 2. The workability can be improved by preventing the center from being displaced and blurring during the rotation work. In addition, since accurate rotation work can be performed in this way, even when harnesses are provided in the periphery, it is possible to prevent the harnesses from being damaged.

As shown in FIG. 51, the L-shaped bracket 64 (see FIG. 42) secures the tank 9 in this manner, as shown in FIG.
Alternatively, this can be achieved by employing a structure in which the engagement projection 65 inserted into the hole 15c of the bracket 15 is provided on the tank 9.

Further, in this modification, the following configuration may be adopted in consideration of the case where the tank 9 is slid to the position of the cross member 3 for the purpose of weight reduction as described above.

First, as shown in FIG. 52, when the tank 9 is slid to the position of the cross member 3 in advance at the bottom of the tank 9, the tank 9 is moved to a position corresponding to the convex portion 67 of the rotation regulating bracket 66 described above.
A second recess 69 is formed (see FIGS. 46 to 48).
Then, after rotating the tank 9 to span between the side members 2, the concave portion 68 is separated from the convex portion 67, and the tank 9 is slid toward the cross member 3 so that one side of the tank 9 is connected to the lower flange of the cross member 3. 52, the second concave portion 68 can be simultaneously engaged with the convex portion 67 of the bracket 66, as shown in FIGS. 52 and 53, whereby the tank 9 can be properly fixed. . In this case, the above-described claw body 63 (see FIG. 43) and the L-shaped bracket 64 (see FIG. 42) can be used as a structure for controlling the displacement. In particular, as shown in FIGS. 53 and 54, an L-shaped bracket 70 is provided on the rotation regulating bracket 66 so as to sandwich the tank 9 between the rotation regulating bracket 66 and the cross member 3. The deviation may be regulated by these. In this case, the L-shaped bracket 64 can be omitted. In addition, 14 is a cushioning material.

[Effects of the Invention] In summary, according to the present invention, the following excellent effects are exhibited.

For example, since the tank is disposed between the frame members disposed at the center in the vehicle width direction, the weight baluns in the vehicle width direction left and right and the like can be easily and accurately secured, and therefore, other components to be installed. And equipment can be rationally and efficiently attached.

Further, the outside of the effective frame material can be sufficiently secured as a mounting space from the convenience of the mounting work of various devices. Alternatively, the wheelbase length can be reduced.

In addition, since the space between the frame members is often a space shielded from sunlight, rainwater, etc., and the environment is relatively gentle, the appearance and durability can be sufficiently ensured, and the material cost can be reduced. For example, in the case of a fuel tank, the temperature fluctuation due to solar radiation is small, so that the fuel temperature can be kept constant.

Further, the tank is protected between the frame members, so that the tank is hardly damaged even at the time of collision or the like, so that the safety can be improved.

And, by arranging the tank between such frame materials, the introduction of the plastic tank can be realized.

[Brief description of the drawings]

FIG. 1 is a plan view showing a tank of the present invention, FIG. 2 is a bottom view thereof, FIGS. 3 to 5 are front views showing mounting conditions, FIG. 6 is a front view, FIG. 8 is a view taken along a line MM in FIG. 1, FIG. 9 is a view taken along a line HH in FIG. 1, and FIG. 10 is a view showing a chassis frame. ) Is a plan view thereof, FIG. 10 (II) is a side view thereof, FIG. 11 is an enlarged plan view of a portion A in FIG. 10 (I), FIG. 12 is a front view thereof, and FIG. 14 is a cross-sectional view taken along the line BB, FIG. 14 is a plan view showing a fixed state of the tank, FIG. 15 is a partially cutaway perspective view showing a bracket to be adopted, and FIG. 16 is EE in FIG. FIG. 17 is a cross-sectional view taken along the line DD in FIG. 14, FIG. 18 is a cross-sectional view taken along the line CC in FIG. 14, and FIG. 19 is a basic configuration of the lubrication structure. , FIG. 20 is a side view, FIG. 21 is a partially broken plan view, and FIG. Sectional view showing a type vicinity of the tank-shaped, cross-sectional view FIG. 23 shows a specific example of mounting of the oil supply structure, perspective view of the pipe FIG. 24 is employed, the
25 is a sectional side view of the adopted cap, FIG. 26 is a sectional view showing the tank mounting portion of the outlet structure, FIG. 27 is a perspective view of the adopted connector, and FIG. 28 is an exploded view showing the mounting connection of the outlet. FIG. 29 is a perspective view showing a band clip to be adopted, FIG. 30 is a side sectional view showing a mounting portion of a liquid meter or the like, FIG. 31 is an enlarged view of a portion G in FIG. 30, and FIG. FIG. 33 is a perspective view showing a modified example of the lubrication structure, FIG. 34 is an enlarged sectional view of an essential part thereof, FIG. 35 is a perspective view showing a pipe used, FIG. Figure is a cross-sectional view showing the mounting state, Figure 37 is a front view thereof, Figure 38 is a cross-sectional view showing another mounting structure, Figure 39 is a perspective view showing another modification of the lubrication structure,
FIG. 40 is an enlarged sectional view of a main part showing still another modified example of the oil supply structure, FIG. 41 is a plan view showing a modified example of mounting the tank, and FIG.
FIG. 41 is a cross-sectional view taken along the line II of FIG. 41, and FIG.
FIG. 44 is a cross-sectional view taken along line J in FIG. 44, FIG. 44 is a plan view showing a bracket used in still another modification of the mounting structure, FIG. 45 is a cross-sectional view taken along line N-N in FIG. Is the plan view of the tank, No. 47
FIG. 48 is a cross-sectional view taken along the line PP of FIG. 46, FIG. 48 is a plan view showing the tank inserted and rotated, and FIG. QQ line section view, 50th
FIG. 51 is a plan view showing the rotating state of the tank, FIG. 51 is a plan view showing the fixed state of the tank, FIG. 52 is a plan view showing the state where the tank has been moved to the cross member position, and FIG. 53 is FIG. 54 is a cross-sectional view taken along the line RR, FIG. 54 is an enlarged cross-sectional view of a portion S in FIG. 53, and FIGS. 55 and 56 are plan views showing a case where the tank is simply rotated or simply tilted and inserted. Front view, FIG. 57 is a perspective view showing a conventional tank, FIG. 58 is a perspective view showing another conventional tank, FIG. 59 is a cross-sectional view showing the internal structure of the conventional tank, and FIG. Exploded perspective view showing the mounting structure,
FIG. 61 is a front view showing a conventional mounting state. In the figure, 2 is a side member exemplified as a frame material, 4 and 5 are upper and lower webs exemplified as vertically extending pieces, and 9 is a tank.

Claims (1)

(57) [Claims] 1. A diagonal line of a cross section having a dimension shorter than the interval between the overhanging pieces so as to be inserted between a pair of frame members having upper and lower overhanging pieces at intervals, and being rotated between the frame materials. A tank formed so that the longitudinal cross-section width is longer than the interval between the overhanging pieces so as to span between the materials.