JP2010167906A - Method for mounting magnetic component for fuel tank, and fuel tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and surely arrange a magnetic component for a fuel tank at a desired mounting position even if the position is invisible from the outside of a tank, and to improve a degree of freedom in mounting. <P>SOLUTION: This method for mounting the component for the fuel tank includes a process for inserting a joint part 42b into the fuel tank 10 from an opening 19 of the fuel tank 10 and arranging a magnet 54 to be opposed to the joint part 42b on an external surface 10a of the fuel tank 10, a process for integrally moving the joint part 42b attracted by the magnet 54 by moving the magnet 54 along the external surface 10a of the fuel tank 10, and a process for arranging the joint part 42b at a stipulated position in the fuel tank 10 by stopping the magnet 54 at a set position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for attaching a magnetic component for a fuel tank and a fuel tank for attaching a magnetic component to a specified position in a non-magnetic fuel tank.

  A fuel tank is used to supply fuel to the internal combustion engine. For example, in a 4WD (4-wheel drive) vehicle and an FR (front engine / rear drive) vehicle, a so-called vertical fuel tank in which the center of the tank bottom in the vehicle width direction is recessed upward to avoid a propeller shaft passing through the center. Is adopted.

  The vertical fuel tank is generally divided into a first reservoir portion in which fuel is stored and a second reservoir portion in which the fuel is stored, and the first and second reservoir portions are separated from each other. Each is equipped with a fuel pumping system. For this reason, as compared with a 2WD (two-wheel drive) vehicle, a system for pumping fuel for two vehicles is necessary, and there is a problem that the cost increases and the size increases.

  Therefore, for example, a fuel tank level balancing device disclosed in Patent Document 1 is known. As shown in FIG. 8, this apparatus includes a fuel tank 1 having two divided sections 1a and 1b, and is configured to keep the fuel levels in the divided sections 1a and 1b equal via a siphon 2. ing.

  A fuel pump module 3 is disposed in the divided section 1b, and a bypass pressure regulator 4 is provided at the outlet of the fuel pump module 3. A conduit 5 is connected to the outlet of the regulator 4, and liquid fuel is supplied to the nozzle 6 a of the injection pump 6 through the conduit 5. The injection pump 6 is operated by liquid fuel supplied to the nozzle 6a, and fuel is sucked from the fuel pickups 2a, 2b of the siphon 2 through the siphon 2.

  Thus, the fuel levels in the divided sections 1a and 1b can be kept equal via the siphon 2, and the total fuel level in the vehicle can be monitored by one fuel level sensor 7.

Japanese Patent Laid-Open No. 10-61515

  In the fuel tank 1, when components such as the fuel pump module 3, the siphon 2, and the injection pump 6 are arranged in the tank, the inside of the tank is introduced from the opening 1 c provided on the upper end side of the fuel tank 1. It is necessary to visually check.

  However, in particular, the vertical fuel tank 1 has a mountain-height portion due to the divided sections 1a and 1b, and the fuel pickup 2a of the siphon 2 may not be visible from the opening 1c. For this reason, the attachment position of the fuel pickup 2a is limited, and there is a problem that the degree of freedom of attachment of the fuel tank parts is lowered. This is because it is necessary to visually confirm the mounting state of the fuel pickup 2a, and it is necessary to set the mounting position within the reach of human hands and machines.

  The present invention solves this type of problem, and even when the position is not visible from the outside of the tank, the magnetic components for the fuel tank can be easily and reliably disposed at a desired mounting position, and the degree of freedom in mounting is improved. It is an object of the present invention to provide a method of attaching a magnetic component for a fuel tank and a fuel tank capable of improving the above.

  The present invention relates to a method for attaching a magnetic component for a fuel tank for attaching a magnetic component to a prescribed position in a non-magnetic fuel tank.

  In this attachment method, a magnetic part is inserted into the fuel tank from an opening of the fuel tank, and a magnetic body is disposed on the outer surface of the fuel tank so as to face the magnetic part. Moving the magnetic component adsorbed to the magnetic body integrally with the magnetic body by moving along the outer surface of the fuel tank; and stopping the magnetic body at a set position by moving the magnetic body to the set position. And a step of disposing the fuel tank at a specified position in the fuel tank.

  Further, in this attachment method, it is preferable that the magnetic component is fixed at the specified position by holding the magnetic component in a magnetic component holding portion provided at a specified position in the fuel tank.

  Further, in this attachment method, it is preferable that the magnetic body is stopped at a set position by holding the magnetic body in a magnetic body holding portion provided on the outer surface of the fuel tank.

  Furthermore, the fuel tank is provided with a fuel pump, a first reservoir for storing the fuel, a second reservoir for storing the fuel, the first reservoir and the second reservoir. It is preferable that it is a saddle-shaped shape which has the mountainous part which isolate | separates lower parts.

  The fuel tank has a siphon tube disposed over the first reservoir portion and the second reservoir portion and sucked through the fuel pump, and the open end portion of the siphon tube opened to the first reservoir portion is It is preferable to have a magnetic component.

  Furthermore, the present invention relates to a non-magnetic fuel tank in which at least magnetic parts are arranged.

  In the fuel tank, there is a magnetic component holding portion for holding the magnetic component corresponding to the position where the magnetic component is slid and arranged under the adsorption action of the magnetic material moving along the outer surface of the fuel tank. It is preferable to be provided.

  Furthermore, it is preferable that a magnetic body holding portion for holding the magnetic component on the magnetic component holding portion by holding the magnetic body is provided on the outer surface of the fuel tank.

  The fuel tank is provided with a fuel pump, a first reservoir for storing fuel, a second reservoir for storing the fuel, a lower portion of the first reservoir and the second reservoir. It is preferable that it is a saddle shape provided with the mountainous part which isolate | separates each other.

  Further, the fuel tank includes a siphon tube disposed over the first reservoir portion and the second reservoir portion, and sucked through the fuel pump, and the open end portion of the siphon tube opened to the first reservoir portion is: It is preferable to have a magnetic component.

  In the present invention, the magnetic component inserted in the fuel tank is adsorbed by the magnetic body arranged on the outer surface of the fuel tank. For this reason, when the magnetic body is moved along the outer surface of the fuel tank, the magnetic component slides integrally with the magnetic body in the fuel tank. Therefore, even if it is a part which cannot be visually recognized from the outside in the fuel tank, the magnetic component can be accurately moved only by moving the magnetic body along the outer surface of the fuel tank.

  As a result, even when the position is not visible from the outside of the fuel tank, the magnetic component can be easily and reliably arranged at a desired mounting position. For this reason, it is possible to improve the degree of freedom in attaching the magnetic components in the fuel tank with a simple process and configuration.

1 is a schematic configuration diagram of a fuel tank according to a first embodiment of the present invention. It is a schematic perspective explanatory drawing of the joint part and holding part which comprise the said fuel tank. It is explanatory drawing of the attachment method which concerns on this invention. It is explanatory drawing of the said attachment method. It is a schematic block diagram of the fuel tank which concerns on the 2nd Embodiment of this invention. It is a schematic perspective explanatory drawing of the joint part and holding part which comprise the said fuel tank. It is a schematic perspective explanatory drawing of the joint part and base holding part which comprise the fuel tank which concerns on the 3rd Embodiment of this invention. It is explanatory drawing of the fuel tank level balance apparatus currently disclosed by patent document 1. FIG.

  FIG. 1 is a schematic configuration diagram of a fuel tank 10 according to a first embodiment of the present invention.

  The fuel tank 10 constitutes a non-magnetic saddle type fuel tank and is mounted on a vehicle (not shown). At the bottom of the center of the fuel tank 10 in the vehicle width direction (in the direction of arrow A), there is provided a flange portion 14 that curves upward, and the main tank portion (first reservoir portion) 16 and the sub tank portion ( The lower portions of the second reservoir portion 18 are separated from each other. The fuel tank 10 is provided with an opening 19 that is located above the main tank portion 16 and for arranging each fuel tank component described later in the fuel tank 10.

  A fuel pump module 20 is disposed in the main tank portion 16. The fuel pump 22 constituting the fuel pump module 20 includes a pumping pump 24 for pumping having a fuel suction port 24a that opens at the bottom of the inner surface 16a of the main tank portion 16, and a pressure regulator 26 is connected to the outlet side. Is done.

  The pressure regulator 26 supplies fuel F to an engine (not shown) via a fuel pipe 28, and a suction branch pipe 30 is provided. A suction jet pump 32 is provided at the tip (lower end) of the branch pipe 30.

  In the fuel tank 10, siphon tubes 34 are disposed over the bottoms of the inner surfaces 16 a and 18 a of the main tank portion 16 and the sub tank portion 18. A three-way joint 36 is provided on the upper side of the siphon tube 34, and the three-way joint 36 is provided with a suction connection portion 36 a provided with a backflow prevention valve 38. One end of the suction conduit 40 is connected to the connecting portion 36a, and the other end of the suction conduit 40 is connected to the suction side (negative pressure side) of the suction jet pump 32.

  A joint portion 42a is connected to the open end 34a of the siphon tube 34 on the main tank portion 16 side. The joint portion 42a is provided with a plate-like base 44a, and the base 44a is disposed, for example, on the bottom of the inner surface 16a of the main tank portion 16 so as to be located outside the suction jet pump 32. A switching valve 46a is attached to the joint portion 42a. The switching valve 46a closes the joint part 42a by detecting gas, and opens the joint part 42a by detecting liquid.

  Similarly, the joint part 42b is connected to the open end 34b of the siphon pipe 34 on the sub tank part 18 side. The joint portion 42b is provided with a plate-like base 44b, and in the first embodiment, at least a part of the base 44b is made of a magnetic material. The joint portion 42b is equipped with a switching valve 46b that is closed by gas detection and opened by liquid detection.

  The base 44 b is arranged and fixed to a base holding part (magnetic component holding part) 48 provided at the bottom of the inner surface 18 a of the sub tank part 18. As shown in FIG. 2, the base holder 48 includes a front protrusion 50a that holds the tip of the base 44b, and side protrusions 50b and 50c that hold both sides of the base 44b.

  The side protrusions 50b and 50c have a bent shape that covers both side portions of the base 44b, and are preferably set in a tapered shape that is inclined inwardly (towards each other) toward the front protrusion 50a. The This is because the base 44b is guided toward the base 44b by the taper shape of the side protrusions 50b and 50c as the base 44b moves toward the front protrusion 50a.

  As shown in FIG. 1, the fuel pump module 20 is provided with a float 52 for detecting the position of the liquid level Fs of the fuel F stored in the main tank portion 16.

  In the fuel tank 10 configured as described above, a method for attaching the magnetic component for the fuel tank according to the first embodiment will be described below.

  First, as shown in FIG. 3, a joint portion 42 b that is a magnetic component is inserted into the fuel tank 10 through the opening 19 of the fuel tank 10. When the joint part 42b cannot be moved manually or by a machine (not shown), the magnet 54, which is a magnetic body, is disposed on the outer surface 10a of the fuel tank 10 so as to face the joint part 42b.

  Next, as shown in FIG. 4, when the magnet 54 is moved along the outer surface 10 a of the fuel tank 10, the joint portion 42 b attracted to the magnet 54, specifically, the main tank portion 16 of the fuel tank 10. A base 44b disposed on the inner surface 16a of the inner surface 16a slides on the inner surface 16a integrally with the magnet 54 (see the arrow in FIG. 4).

  The magnet 54 is moved along the outer surface 10 a of the fuel tank 10 from the main tank portion 16 through the flange portion 14 to the sub tank portion 18. For this reason, the joint portion 42b that is oppositely attracted to the magnet 54 with the fuel tank 10 interposed therebetween slides from the inner surface 16a to the inner surface 18a through the inner surface of the flange portion 14.

  Then, when the magnet 54 is stopped at the position facing the outer surface of the base holding portion 48, that is, the set position, the joint portion 42 b is disposed on the base holding portion 48 that is the specified position. At that time, in the base holding portion 48, as shown in FIG. 2, both side portions of the base 44b of the joint portion 42b are held by the side protrusions 50b and 50c, and the tip of the base 44b is the front protrusion 50a. Abut. Accordingly, the base 44b is firmly held and fixed to the front protrusion 50a and the side protrusions 50b and 50c. Thereafter, the magnet 54 is detached from the fuel tank 10.

  Thus, in the first embodiment, the joint portion 42b, which is a magnetic component inserted into the fuel tank 10, is adsorbed by the magnet 54 disposed on the outer surface 10a of the non-magnetic fuel tank 10. . For this reason, when the magnet 54 is moved along the outer surface 10 a of the fuel tank 10, the joint portion 42 b slides and moves integrally with the magnet 54 in the fuel tank 10.

  Therefore, even if it is a part where the inside of the fuel tank 10 cannot be visually recognized from the opening part 19, the joint part 42b can be accurately moved to the part only by moving the magnet 54 along the outer surface 10a of the fuel tank 10. Can do. As a result, it is possible to set the specified position for installation of the joint portion 42b at a position in the fuel tank 10 that is not visible from the opening 19, and to easily and reliably place the joint portion 42b at the specified position.

  For this reason, the effect that the attachment freedom degree of the joint part 42b in the fuel tank 10 can be aimed at by a simple process and structure is acquired.

  Furthermore, in the first embodiment, the base holding part 48 is provided at the specified position of the joint part 42b. The base holder 48 includes a front protrusion 50a and side protrusions 50b and 50c.

  Therefore, only by moving the magnet 54 along the outer surface 10a of the fuel tank 10 to a position corresponding to the specified position, the base 44b constituting the joint portion 42b is formed by the front protrusion 50a and the side protrusions 50b and 50c. Is securely held and fixed at the specified position. This eliminates the need for fixing the joint portion 42b at the specified position, and eliminates the need for individual fixing portions such as bolts, which is advantageous in that it is economical.

  Next, the operation of the fuel tank 10 will be described.

  As shown in FIG. 1, when the fuel pump 22 constituting the fuel pump module 20 is driven, the fuel F stored in the main tank portion 16 flows from the fuel suction port 24 a under the action of the pumping jet pump 24. Sucked.

  The fuel F is supplied from the pressure regulator 26 to the engine via the fuel pipe 28, while being supplied to the suction jet pump 32 via the branch pipe 30, and negative pressure is generated in the suction pipe 40. The suction conduit 40 communicates with the siphon tube 34 via the three-way joint 36, and the inside of the siphon tube 34 is sucked.

  The siphon tube 34 is, for example, disposed in the fuel F in which one open end 34 a is stored in the main tank portion 16, and the other open end 34 b is disposed in the sub tank portion 18 without the fuel F. The switching valve 46b is closed. Therefore, when the inside of the siphon tube 34 is sucked under the action of the suction jet pump 32, the fuel F sucked up from one open end 34a of the siphon tube 34 is absorbed into the other open end 34b of the siphon tube 34. To the side.

  At the open end 34b, when the fuel F is supplied, the switching valve 46b is opened, the fuel F on the main tank portion 16 side is sent to the sub tank portion 18 side, and the siphon function by the siphon tube 34 is exhibited. For this reason, each fuel level Fs of the fuel F in the main tank part 16 and the fuel F transferred to the sub tank part 18 will be arrange | positioned in the same height position.

  FIG. 5 is a schematic configuration diagram of a fuel tank 60 according to the second embodiment of the present invention. Note that the same components as those of the fuel tank 10 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Similarly, in the third embodiment described below, detailed description thereof is omitted.

  A magnet holding portion (magnetic material holding portion) 62 for stopping the magnet 54 at the set position is provided on the bottom surface of the sub tank portion 18 constituting the fuel tank 60. The magnet holding part 62 is set corresponding to the base holding part 48 for holding the joint part 42 b in the sub tank part 18. As shown in FIG. 6, the magnet holding portion 62 protrudes outward from the outer surface 10 a of the fuel tank 60, and has a front protrusion 64 a that contacts the moving direction (arrow direction) of the magnet 54, and both side portions of the magnet 54. Side projections 64b and 64c.

  In the second embodiment configured as described above, the magnet holding portion 62 is provided corresponding to the set position for stopping the magnet 54. For this reason, when the magnet 54 is moved along the outer surface 10a of the fuel tank 60 and the joint portion 42a is disposed on the base holding portion 48 which is the specified position, the magnet 54 is simply moved along the magnet holding portion 62. Good.

  Therefore, the joint portion 42b is positioned and held with respect to the base holding portion 48 only by holding the magnet 54 on the front protrusion 64a and the side protrusions 64b and 64c constituting the magnet holding portion 62. The effect that it can be obtained.

  FIG. 7 is a schematic perspective explanatory view of a base holding portion 72 for holding the joint portion 70 constituting the fuel tank according to the third embodiment of the present invention at a specified position.

  The joint unit 70 includes a disk-shaped base 74, and at least a part of the base 74 is made of a magnetic material. The base holder 72 includes an arc-shaped protrusion 76 that holds the outer periphery of the base 74 around a predetermined angle.

  In 3rd Embodiment comprised in this way, the base 74 of the joint part 70 has disk shape. For this reason, even if the joint portion 70 is displaced within the range of the angle α ° with respect to the moving direction indicated by the arrow, the base 74 is easily and reliably connected to the base holding portion 72 via the arc-shaped protrusion 76. The effect that it becomes possible to hold | maintain is obtained.

DESCRIPTION OF SYMBOLS 10, 60 ... Fuel tank 16 ... Main tank part 18 ... Sub tank part 20 ... Fuel pump module 22 ... Fuel pump 24 ... Pumping pump 24a ... Fuel suction port 26 ... Pressure regulator 28 ... Fuel piping 30 ... Branch piping 32 ... Suction Jet pump 34 ... Siphon tubes 34a, 34b ... Open end 36 ... Three-way joint 36a ... Connection portion 38 ... Backflow prevention valve 40 ... Suction conduit 42a, 42b, 70 ... Joint portions 44a, 44b, 74 ... Base 46a , 46b ... Switching valve 48, 72 ... Base holder 50a, 64a ... Front projection 50b, 50c, 64b, 64c ... Side projection 52 ... Float 62 ... Magnet holder 76 ... Projection

Claims (9)

A method of attaching a magnetic component for a fuel tank for attaching a magnetic component to a specified position in a non-magnetic fuel tank,
Inserting the magnetic component into the fuel tank from the opening of the fuel tank and disposing a magnetic body on the outer surface of the fuel tank facing the magnetic component;
Moving the magnetic body along the outer surface of the fuel tank to move the magnetic component adsorbed on the magnetic body together with the magnetic body;
Disposing the magnetic component at the specified position in the fuel tank by stopping the magnetic body at a set position; and
A method for attaching a magnetic component for a fuel tank, comprising:   2. The mounting method according to claim 1, wherein the magnetic component is fixed to the specified position by holding the magnetic component in a magnetic component holding portion provided at the specified position in the fuel tank. How to install magnetic parts for fuel tanks.   3. The attachment method according to claim 1, wherein the magnetic body is held at the set position by holding the magnetic body on a magnetic body holding portion provided on an outer surface of the fuel tank. How to install magnetic parts for tanks. The attachment method according to any one of claims 1 to 3, wherein the fuel tank includes a first reservoir part in which a fuel pump is disposed and fuel is stored.
A second reservoir for storing the fuel;
A mountain-top portion that separates the lower portions of the first and second reservoir portions; and
A method for attaching a magnetic component for a fuel tank, characterized by having a saddle shape having   5. The attachment method according to claim 4, wherein the fuel tank includes a siphon pipe disposed over the first reservoir portion and the second reservoir portion and sucked through the fuel pump. The method for attaching a magnetic component for a fuel tank, wherein the open end portion of the siphon tube to be opened includes the magnetic component. A non-magnetic fuel tank in which at least magnetic parts are arranged,
In the fuel tank, there is a magnetic component holding for holding the magnetic component corresponding to the position where the magnetic component is slid and arranged under the action of adsorption of the magnetic material moving along the outer surface of the fuel tank. The fuel tank is provided with a portion.   7. The fuel tank according to claim 6, wherein a magnetic body holding part is provided on the outer surface of the fuel tank to hold the magnetic part in the magnetic part holding part by holding the magnetic body. Fuel tank. The fuel tank according to claim 6 or 7, wherein the fuel tank is provided with the fuel pump and a first reservoir part for storing fuel;
A second reservoir for storing the fuel;
A mountain-top portion that separates the lower portions of the first and second reservoir portions; and
A fuel tank characterized by having a saddle-like shape.   9. The fuel tank according to claim 8, further comprising a siphon tube disposed over the first reservoir portion and the second reservoir portion and sucked through the fuel pump, wherein the siphon tube is opened to the first reservoir portion. The open end portion of the fuel tank has the magnetic part.

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