JP6283271B2 - Tank structure - Google Patents

Description

  The present invention relates to a tank structure of a tank provided in a vehicle.

Patent Document 1 describes a fuel tank system including a fuel tank having a shape extending long backward.
A vehicle equipped with such a fuel tank can secure a large luggage space on the rear side of the passenger compartment. Furthermore, the center of gravity of the vehicle can be lowered.

In addition, a guide element and a plate (wave eliminating member) are attached (internally installed) to the liquid container (tank) shown in Patent Document 2.
When the liquid in the liquid container is swung while the vehicle is running, noise is generated. However, by installing a wave eliminating member having a guide element and a plate in the fuel container, the rocking of the liquid is suppressed and the noise is suppressed. The

Japanese Patent No. 4441498 Special table 2012-510404 gazette

The guide element and plate disclosed in Patent Document 2 must be accommodated in the liquid container when the liquid container is molded.
In other words, it is impossible to install the guide element and the plate later in the molded liquid container.
Further, the guide element and the plate need to be fixed to the liquid container. However, the structure of the guide element and the plate fixed in the liquid container is not clear.
For example, when the guide element and the plate are fixed to the inside of the liquid container by welding or the like, it is necessary to fix the guide element and the plate when molding the liquid container. It is not possible to set.

  Then, this invention makes it a subject to provide the tank structure which can install a wave-removal member in a tank easily.

  In order to solve the above-mentioned problems, the present invention provides a tank structure of a tank in which a wave eliminating member that suppresses rocking of stored liquid is provided, and the tank has a mounting hole in which a pump unit is mounted. The pump unit is inserted into the mounting hole from the outside of the tank and attached to the tank, and the wave eliminating member is configured to be able to enter the tank through the mounting hole, It is characterized in that the pump unit is pressed and fixed to a wall surface facing the mounting hole inside the tank.

According to the present invention, the wave eliminating member disposed inside the tank is inserted into the tank from the mounting hole for mounting the pump unit to the tank. With such a configuration, the wave eliminating member can enter the formed tank from the mounting hole, and therefore the wave eliminating member is easily disposed inside the tank. Further, the wave eliminating member is pressed and fixed to the wall surface facing the mounting hole by the pump unit inserted from the outside into the mounting hole.
Thus, according to the tank structure of the present invention, the wave eliminating member can be easily installed in the tank.

  Further, the pump unit has a housing part accommodated in the tank, and the housing part presses the wave eliminating member against the wall surface facing the mounting hole.

  According to the present invention, the wave-dissipating member can be pressed by the strong-body part, and the wave-dissipating member can be effectively fixed.

  In addition, the tank includes a main body portion and an extending portion that continuously extends from the main body portion, and the attachment hole is on the extension of the extending portion in the longitudinal direction in the main body portion or on the extending portion. The wave-dissipating member is formed in a length that can be disposed from the extending portion to the main body portion, and is disposed inside the tank with one end entering the extending portion. It is characterized by that.

According to the present invention, the wave eliminating member provided in the tank is disposed in a state where one end enters the extending portion of the tank. Therefore, when the width of the extending portion is substantially equal to the width of the wave eliminating member, the wave eliminating member is suitably fixed by entering the extending portion.
The attachment hole is formed on the extension of the extending portion in the longitudinal direction. For this reason, one end of the wave extinguishing member that has entered from the mounting hole easily enters the extending portion when it goes straight.
Thus, according to the tank structure of the present invention, the wave eliminating member can be easily installed in the tank.

  In addition, the wave eliminating member is arranged with a wall surface facing the mounting hole as an arrangement surface inside the tank, and one end entering the extending portion is on the wall surface side facing the arrangement surface from the arrangement surface side. It is characterized by being bent toward.

  According to the present invention, it is possible to provide a wave eliminating device in which one end entering the extending portion of the tank is bent from the arrangement surface side toward the opposing wall surface side. The wave eliminating member is effectively and easily fixed by sandwiching the bent end between the arrangement surface and the wall surface facing the arrangement surface.

  Moreover, the one end which penetrates into the said extending | stretching part is pinched | interposed between the said arrangement | positioning surface and the wall surface which opposes the said arrangement | positioning surface, The said wave eliminating member is fixed.

  According to the present invention, the wave eliminating member is effectively and easily fixed at the extending portion of the tank.

  The mounting hole is circular, and the wave eliminating member has a width with respect to a longitudinal direction smaller than an inner diameter of the mounting hole.

  According to the present invention, the wave eliminating member is formed so that the width of the wave eliminating member is smaller than the inner diameter of the circular attachment hole and can pass through the attachment hole.

  According to the present invention, it is possible to provide a tank structure in which a wave eliminating member can be easily installed in the tank.

It is a figure which shows the fuel tank with which a vehicle is equipped. It is a perspective view of a fuel tank which has a tank structure of a 1st embodiment. It is sectional drawing of a pump unit. It is sectional drawing of the fuel tank in which the absorber was installed. It is a perspective view of an absorber and a fuel tank. (A) is sectional drawing which shows the state which an absorber enters into the fuel tank of a shape which does not have an extending part, (b) is sectional drawing which shows the state where the absorber was installed in the fuel tank of a shape which does not have an extending part It is.

<< First Embodiment >>
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a view showing a fuel tank provided in a vehicle. FIG. 2 is a perspective view of a fuel tank having the tank structure of the first embodiment.
As shown in FIG. 1, the tank structure of the first embodiment is a tank structure of a fuel tank 1 provided in a vehicle 100. The fuel tank 1 is a tank that stores the fuel of the vehicle 100. For example, the fuel tank 1 is disposed below the front seat 101 a of the vehicle 100. The vehicle 100 is a so-called center tank vehicle in which the rear side (luggage floor 102) of the passenger compartment is enlarged to lower the center of gravity.

The fuel tank 1 has a shape in which at least a part of the fuel tank 1 extends from the front seat 101a side to the rear seat 101b side.
For example, as shown in FIG. 2, the fuel tank 1 according to the first embodiment has a shape having a long extending portion 10 b and a body portion 10 a that is wider than the extending portion 10 b. The extending portion 10b extends so as to continuously extend from the main body portion 10a. That is, the main body portion 10a and the extending portion 10b communicate with each other to form one fuel tank 1.

  And as shown in FIG. 1, the extending | stretching part 10b is arrange | positioned along the front-back direction of the vehicle 100, and the main-body part 10a is arrange | positioned ahead of the extending | stretching part 10b. Further, the fuel filler opening 3a of the vehicle 100 is disposed on the rear side of the rear seat 101b.

  As shown in FIG. 2, the fuel tank 1 includes a pump unit 2. The pump unit 2 is attached to the fuel tank 1 by being inserted into a circular attachment hole 10 c that opens in a wall surface (tank upper surface 1 a) that is an upper surface of the fuel tank 1. The shape of the mounting hole 10c is not limited to a circle.

FIG. 3 is a sectional view of the pump unit.
As shown in FIG. 3, the pump unit 2 includes a fuel pump 30. The fuel pump 30 is a pump that sucks up fuel stored in the fuel tank 1 and is accommodated in the housing portion 2a.
The housing portion 2 a is attached in a state where it is suspended from the tank upper surface 1 a toward the inside of the fuel tank 1, and is accommodated in the fuel tank 1.
The casing 2a has a cup shape with an upper side (side facing the bottom surface 2a1) opened. The opening part of the housing part 2a is obstruct | occluded with the cover member 2b. The housing 2a is attached so that the opening portion faces the tank upper surface 1a.
For example, the lid member 2b is formed of an elastic body such as rubber and is press-fitted into the opening portion of the housing portion 2a to close the opening portion in a liquid-tight manner. Alternatively, the lid member 2b having a male screw formed on the outer periphery may be screwed into an opening portion in which the female screw is formed in the housing portion 2a. The structure in which the lid member 2b is attached to the housing part 2a is not limited.

A connecting rod 11a that extends downward from the base 11 (in a direction away from the tank upper surface 1a) is connected to the lid member 2b that closes the casing 2a. The base 11 and the lid member 2 b are connected by a connecting rod 11 a and the housing 2 a is attached to the base 11.
The base 11 is held in the fuel tank 1 by fitting into the mounting hole 10c.

  The lid member 2b may be slidably attached to the connecting rod 11a. And the structure which urges | biases the cover member 2b and the housing | casing part 2a below may be sufficient as the compression spring 11b arrange | positioned around the connection rod 11a.

  The base portion 11 of the pump unit 2 is fitted into the mounting hole 10 c from the outside of the fuel tank 1, and the housing portion 2 a is accommodated inside the fuel tank 1. That is, the pump unit 2 is attached to the fuel tank 1 from the outside.

FIG. 4 is a cross-sectional view of the fuel tank in which the absorber is installed. FIG. 5 is a perspective view of the absorber and the fuel tank.
As shown in FIG. 4, the base 11 of the pump unit 2 is attached to the tank upper surface 1 a of the fuel tank 1. A housing 2a is attached to the base 11. The casing 2a is disposed inside the fuel tank 1 in a state of being suspended from the tank upper surface 1a toward the bottom surface of the fuel tank 1 (tank bottom surface 1b). The tank bottom surface 1b is a surface that faces the tank top surface 1a and faces the mounting hole 10c.

  FIG. 4 is a cross-sectional view of the fuel tank 1 cut along a cross section passing through the extending portion 10b. As shown in FIG. 4, the attachment hole 10c is formed on the extension of the extending portion 10b in the main body portion 10a. That is, the attachment hole 10c is formed in a direction in which the extending portion 10b is extended in the longitudinal direction. Although not shown, the fuel tank 1 may have the attachment hole 10c formed in the extending portion 10b.

  In addition, an absorber 5 is provided in the fuel tank 1. The absorber 5 is disposed inside the fuel tank 1. The absorber 5 is a wave canceling member that suppresses the fuel from being swung due to the vibration of the vehicle 100 (see FIG. 1) on the surface of the fuel stored in the fuel tank 1. The absorber 5 is formed in a long length in the fuel tank 1 that can be disposed from the extending portion 10b toward the main body portion 10a.

  The absorber 5 according to the first embodiment is pressed by the housing portion 2 a of the pump unit 2 inside the fuel tank 1. Specifically, a fixed surface 5 a is formed on the absorber 5. And the fixed surface 5a is inserted | pinched between the tank bottom face 1b and the bottom face 2a1 of the housing part 2a, and the absorber 5 is fixed. In the first embodiment, the tank bottom surface 1b is an arrangement surface on which the absorber 5 is arranged.

  The housing part 2a has a sufficiently high strength to protect the fuel pump 30 (see FIG. 3) accommodated therein. Therefore, the absorber 5 pressed down by the housing | casing part 2a will be pressed down by a high intensity | strength member (housing | casing part 2a), and the absorber 5 is fixed effectively.

  In addition, as shown in FIG. 3, if the housing part 2a is urged | biased by the compression spring 11b to the downward side (tank bottom face 1b side), the absorber 5 will be effectively pressed down by the housing part 2a. Thus, the fuel tank 1 is effectively fixed.

As shown in FIG. 5, the absorber 5 (wave eliminating member) is a long plate-like member formed by appropriately bending a long flat plate member.
As for the absorber 5, the fixed surface 5a is formed in the position corresponding to the housing part 2a (refer FIG. 4) of the pump unit 2. As shown in FIG. When the absorber 5 is disposed in the fuel tank 1, the height from the fixed surface 5a to the tank upper surface 1a is equal to the height from the bottom surface 2a1 (see FIG. 4) of the housing portion 2a to the tank upper surface 1a. Formed.

The absorber 5 is formed such that the maximum value of the width Wa with respect to the length L in the longitudinal direction is smaller than the inner diameter φD of the mounting hole 10 c that opens to the fuel tank 1.
The absorber 5 can pass through the mounting hole 10c by forming the maximum value of the width Wa smaller than the inner diameter φD of the mounting hole 10c. The absorber 5 can enter the fuel tank 1 through the mounting hole 10c.

  Moreover, as shown in FIG. 4, it is preferable that one end of the long absorber 5 is configured to enter the extending portion 10b. For example, when the width Wa (see FIG. 5) of the absorber 5 is substantially equal to the width Wt (see FIG. 5) of the extending portion 10b, the swing of the absorber 5 (perpendicular to the extending portion 10b) is caused by one end entering the extending portion 10b. Direction fluctuation).

  As described above, the attachment hole 10c is formed in the direction in which the extending portion 10b is extended in the longitudinal direction (on the extension of the extending portion 10 in the longitudinal direction). For example, as shown in FIG. 5, the attachment hole 10c is formed on the main body portion 10a on an extension of the center line CL1 extending in the longitudinal direction of the extending portion 10b. Therefore, when the absorber 5 that has entered the fuel tank 1 from the mounting hole 10c toward the extending portion 10b goes straight, one end of the absorber 5 enters the extending portion 10b. That is, the fuel tank 1 has a structure in which one end of the absorber 5 can easily enter the extending portion 10b.

  Although not shown, when the mounting hole 10c is formed in the extending portion 10b, the absorber 5 that has entered the fuel tank 1 from the mounting hole 10c toward the main body portion 10a goes straight as it is, and one end extends. It is disposed inside the main body 10a in a state of entering the portion 10b.

Further, as shown in FIGS. 4 and 5, the absorber 5 has one end (rear end portion 5b) that enters the extending portion 10b of the fuel tank 1 and an end portion (front end portion 5c) opposite to the rear end portion 5b. ) Is bent from the tank bottom surface 1b (arrangement surface) side toward the tank upper surface 1a (wall surface facing the arrangement surface).
The rear end 5b and the front end 5c are bent toward the tank upper surface 1a, so that the absorber 5 is fitted between the tank upper surface 1a and the tank bottom surface 1b. The absorber 5 is effectively fixed by being sandwiched between the tank bottom surface 1b and the tank top surface 1a.

In addition, the bending shape of the absorber 5 is not limited. Any shape (bending shape) that can effectively suppress the oscillation of the fuel stored in the fuel tank 1 may be used.
In addition, it is preferable that the absorber 5 is formed with the raw material which has elasticity, such as resin and sheet metal, for example.

As shown in FIG. 5, the maximum width Wa of the absorber 5 is smaller than the inner diameter φD of the mounting hole 10 c of the fuel tank 1. Furthermore, the absorber 5 has elasticity suitably. For this reason, the absorber 5 can enter the inside of the fuel tank 1 from the mounting hole 10c.
As shown in FIG. 4, the absorber 5 is disposed with one end (rear end portion 5 b) entering the extending portion 10 b of the fuel tank 1. The absorber 5 has one end (rear end portion 5b) that enters the extending portion 10b bent from the tank bottom surface 1b side toward the tank upper surface 1a side.

  If the rear end portion 5b is sandwiched between the tank bottom surface 1b and the tank top surface 1a in the extending portion 10b, the absorber 5 is easily fixed to the fuel tank 1.

  Further, as shown in FIG. 4, the absorber 5 arranged at a predetermined position inside the fuel tank 1 is pressed against the tank bottom surface 1b by the housing portion 2a of the pump unit 2 attached to the tank upper surface 1a. Specifically, the fixed surface 5a of the absorber 5 is pressed against the tank bottom surface 1b by the bottom surface 2a1 of the housing portion 2a. The absorber 5 is effectively fixed to the fuel tank 1 by pressing the fixing surface 5a against the tank bottom surface 1b with the housing portion 2a (bottom surface 2a1).

As described above, the absorber 5 (wave eliminating member) is provided inside the fuel tank 1 of the first embodiment as shown in FIG. The absorber 5 is fixed to the fuel tank 1 by being pressed against the tank bottom surface 1 b by a pump unit 2 attached to the fuel tank 1.
Moreover, the absorber 5 is arrange | positioned so that the rear side edge part 5b may enter into the extending | stretching part 10b in the fuel tank 1. FIG. The absorber 5 is fixed to the fuel tank 1 with the rear end 5b sandwiched between the tank bottom surface 1b and the tank top surface 1a at the extending portion 10b.
Therefore, an operation (such as welding or brazing) for fixing the absorber 5 to the fuel tank 1 is not required, and the tank structure is such that the absorber 5 can be easily installed inside the fuel tank 1.

  Further, the absorber 5 is configured to be able to enter the inside of the fuel tank 1 from the mounting hole 10 c for mounting the pump unit 2. Further, as described above, the work of fixing the absorber 5 inside the fuel tank 1 (work such as welding or brazing) is unnecessary. Therefore, the tank structure of the first embodiment is a structure in which the absorber 5 can be easily installed in the molded fuel tank 1 later.

  Moreover, even if it is the fuel tank 1 from which the shape of the main-body part 10a shown in FIG. 4 differs, if the shape of the extending | stretching part 10b is the same and the pump unit 2 is the structure inserted in the attachment hole 10c, the absorber 5 of the same shape will be shown. Can be installed.

<< Second Embodiment >>
6A is a cross-sectional view showing a state in which the absorber enters a fuel tank having no extending portion, and FIG. 6B is a state in which the absorber is installed in a fuel tank having no extending portion. It is sectional drawing shown.
2nd Embodiment of this invention is a tank structure by which the absorber 51 (wave-dissipating member) is installed in the fuel tank 50 of a shape which does not have an extending part.
The fuel tank 50 of the second embodiment has a shape that does not have an extending portion as shown in FIG. In addition, the same code | symbol is attached | subjected to the same component as the fuel tank 1 (refer FIG. 2) of 1st Embodiment, and detailed description is abbreviate | omitted.

The absorber 51 provided in the fuel tank 50 of the second embodiment is also configured to be accommodated in the fuel tank 50. That is, as shown in FIG. 6A, the absorber 51 is configured to be able to enter the inside of the fuel tank 50 through the mounting hole 50c opened in the tank upper surface 50a.
For example, when the mounting hole 50c is circular, the width of the absorber 51 is smaller than the inner diameter of the mounting hole 50c.
Further, in the fuel tank 50 shown in FIG. 6A, the tank bottom surface 50 b facing the mounting hole 50 c is the arrangement surface of the absorber 51. Then, as shown in FIG. 6 (b), the pump unit 2 (the casing 2a) inserted into the mounting hole 50c from the outside presses the absorber 51 against the tank bottom surface 50b.

Even with such a structure, the absorber 51 that is pressed against the tank bottom surface 50b by the pump unit 2 (the casing portion 2a) can be easily and effectively fixed.
As shown in FIG. 6 (a), even if the fuel tank 50 has a shape that does not have an extending portion, the absorber 51 enters the fuel tank 50 through the mounting hole 50c, and the pump unit 2 (the casing portion). By being pressed against the tank bottom surface 50b in 2a), the absorber 51 can be easily installed and effectively fixed.

  In addition, the bending shape of the absorber 51 of 2nd Embodiment is not limited to the shape shown to (a), (b) of FIG. It is only necessary that the fuel tank 50 be appropriately bent into a shape that can effectively suppress the oscillation of the fuel stored in the fuel tank 50.

Note that the design of the present invention can be changed as appropriate without departing from the spirit of the invention.
For example, one absorber 5 (see FIG. 4) is provided in the fuel tank 1 (see FIG. 1) of the first embodiment. It is not limited to this structure, The structure by which two or more absorbers 5 are installed may be sufficient. In this case, the two or more absorbers 5 may be disposed so as to overlap each other, and the portion where the absorbers 5 overlap or one of the absorbers 5 may be pressed by the pump unit 2 (see FIG. 4). .

  In addition, when another device (sensor or the like) different from the pump unit 2 is inserted into the mounting hole from the outside and attached to the fuel tank 1 (see FIG. 1), the absorber 5 (see FIG. 4) is pressed by this device. It is good.

  The present invention is also applicable to vehicle tanks (containers for storing liquids) other than the fuel tank 1 shown in FIG.

1 Fuel tank (tank)
1a Tank upper surface (wall surface facing the arrangement surface)
1b Tank bottom (wall facing the mounting hole, placement surface)
2 Pump unit 2a Housing 5 Absorber (wave extinguishing member)
5b Rear end (one end entering the extension)
10a body part 10b extending part 10c mounting hole 30 fuel pump (pump)
50 Fuel tank
50a Tank upper surface (wall surface facing the arrangement surface)
50b Tank bottom (wall facing the mounting hole, placement surface)
50c Mounting hole 51 Absorber (wave extinguishing member)

Claims (5)

A tank structure of a tank in which a wave eliminating member that suppresses rocking of stored liquid is provided,
The tank is formed with a mounting hole for mounting equipment ,
The device is inserted into the mounting hole from the outside of the tank and attached to the tank,
The wave eliminating member is configured to be able to enter the inside of the tank through the mounting hole, and is fixed by being pressed by the device on the wall surface facing the mounting hole in the tank,
The tank has a main body part, and an extending part extending continuously from the main body part,
The attachment hole is formed on the extension of the extension part in the longitudinal direction of the main body part or in the extension part,
The wave eliminating member is formed in a length that can be disposed from the extending portion to the main body portion, and is disposed inside the tank with one end entering the extending portion. And tank structure. The device is a pump unit, and the pump unit has a housing portion accommodated in the tank, and the housing portion presses the wave eliminating member against the wall surface facing the mounting hole. The tank structure according to claim 1, characterized in that: The wave eliminating member is disposed inside the tank with a wall surface facing the mounting hole as an arrangement surface, and one end entering the extending portion is directed from the arrangement surface side to the wall surface side facing the arrangement surface. The tank structure according to claim 1 , wherein the tank structure is bent. 4. The tank structure according to claim 3 , wherein one end of the extending portion is sandwiched between the arrangement surface and a wall surface facing the arrangement surface, and the wave eliminating member is fixed. The mounting hole is circular;
The tank structure according to any one of claims 1 to 4 , wherein the wave eliminating member has a width with respect to a longitudinal direction smaller than an inner diameter of the mounting hole.

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