JP2019098986A - Attachment structure of protective component to fuel tank for automobile - Google Patents

Abstract

To provide an attachment structure of a protective component to a fuel tank for an automobile which facilitates manufacturing of an attachment member of a protective member and has high holding power.SOLUTION: In an attachment structure of a protective component 50 to a fuel tank 10 for an automobile, a tank side fixing part 20 for holding the protective component 50 is integrally formed in a bottom part 14 or a side part of the fuel tank 10, and an attachment clip 40 for attaching the protective component 50 to the tank side fixing part 20 and a clip fixing member 30 for locking the attachment clip 40 are attached thereto. The tank side fixing part 20 forms helical groove parts 21, 22 or projection parts. The clip fixing member 30 forms projection parts 31, 32 or helical groove parts. The tank side fixing part 20 and the clip fixing member 30 are fixed by the helical groove parts 21, 22 and the projection parts 31, 32, and the protective component 50 is held by the attachment clip 40 and the clip fixing member 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mounting structure of a protective part to a fuel tank for a motor vehicle mounted under a floor panel of the motor vehicle.

Conventionally, fuel tanks for automobiles are often mounted under floor panels due to space concerns. In this case, heat is transmitted to the fuel tank by radiant heat from the ground. For this reason, in order to prevent the temperature rise of the fuel tank, the heat insulation of the fuel tank and the mounting of protective parts in order to prevent the jumping up of pebbles and the like from the ground are performed.

As shown in FIG. 14, in order to attach the protective part 150 to the fuel tank 110, the clip fixing part 130 is welded to the outer wall 111 of the fuel tank 110, and the mounting clip 140 is inserted into the clip fixing part 130 to fix the clip. The protective component 150 is held between the top surface of the component 130 and the head of the mounting clip 140 (see, for example, Patent Document 1).
In this case, a process of welding the clip fixing component 130 to the outer wall 111 of the fuel tank 110 is necessary, and it takes time and effort, such as confirmation of welding strength.

When the clip fixing part 130 is not welded to the fuel tank 210, as shown in FIG. 15, the recess 212 is formed in the outer wall 211 of the fuel tank 210, and the first clip 230 is slid into the recess 212 and inserted. The leg portion 241 of the second clip 240 is inserted into the hole 231 of the first clip 230, and the protective component 250 is held between the head 242 of the second clip 240 and the first clip 230 (see, for example, Patent Document 2) ).

In this case, since the second clip 240 is held in the recess 212 only by the force that the leg portion 232 of the second clip 240 spreads in the lateral direction, when the outer wall 211 of the fuel tank 210 is expanded, The recess 212 may be deformed to reduce the holding force of the second clip 240.

JP 2005-343324 A JP, 2010-36855, A

An object of the present invention is to provide a mounting structure of a protective part to a fuel tank for an automobile, which is easy to manufacture a mounting member of the protective member and has high holding power.

In order to solve the above-mentioned problems, the present invention according to claim 1 is an attachment structure of protective parts to a fuel tank for an automobile mounted under a floor panel of the automobile,
A tank side fixing portion for holding the protective component is integrally formed on the bottom or side of the fuel tank, and a mounting clip for attaching the protective component to the tank side fixing portion and a clip fixing member for locking the mounting clip are attached.
The tank side fixing portion forms a helical spiral groove portion to which the clip fixing member is attached, and the clip fixing member forms a projection to be fitted into the spiral groove portion of the tank side fixing portion.
Alternatively, the clip fixing member forms a spiral spiral groove to which the tank side fixing portion is attached, and the tank side fixing portion forms a protrusion to be fitted into the spiral groove of the clip fixing member.
The tank side fixing portion and the clip fixing member are fixed by the spiral groove portion and the projection portion, and the protective part is held between the mounting clip and the clip fixing member. is there.

In the first aspect of the present invention, in the mounting structure of a protective part to a fuel tank for a car mounted under a floor panel of a car, a tank side fixing portion for holding the protective part is provided on the bottom or side of the fuel tank. It is integrally formed. For this reason, the welding process etc. which attach the tank side fixing | fixed part holding a protection component are unnecessary, and an attachment is easy.

A mounting clip for mounting the protective component to the tank side fixing portion and a clip fixing member for locking the mounting clip are mounted. Therefore, the protective parts can be reliably attached to the fuel tank for the automobile only by attaching the clip fixing member to the tank side fixing portion and attaching the mounting clip to the clip fixing member. In addition, the expansion and contraction of the fuel tank does not change the force for holding the protective component.

The tank side fixing portion forms a spiral spiral groove portion to which the clip fixing member is attached, and the clip fixing member forms a protrusion to be fitted into the spiral groove portion of the tank side fixing portion. Alternatively, the clip fixing member forms a spiral spiral groove to which the tank side fixing portion is attached, and the tank side fixing portion forms a protrusion to be fitted into the spiral groove of the clip fixing member. For this reason, the clip fixing member can be easily attached by screwing it into the tank side fixing portion.

The tank side fixing portion and the clip fixing member are fixed by the spiral groove portion and the projection portion, and the protective component is held between the mounting clip and the clip fixing member. For this reason, the protective component can be easily attached to the fuel tank simply by inserting the clip into the clip fixing member fixed by rotation to the tank side fixing portion.

According to a second aspect of the present invention, the helical groove portion and the projection portion are provided with a plurality of the tank-side fixing portion and the clip fixing member, and the protection structure is attached to a fuel tank for an automobile.

In the present invention according to claim 2, since the spiral groove and the projection are formed in a plurality, the clip fixing member can be securely and stably attached to the tank side fixing portion, and the protective component is reliably attached to the fuel tank be able to.

The present invention according to claim 3 provides the recess at which the leg of the mounting clip can enter at the center of the tank side fixing part, and the through hole to which the leg of the accessory clip can enter at the center of the clip fixing member. It is a mounting structure of protective parts to a fuel tank for automobiles.

In the present invention according to claim 3, a recess is provided at the center of the tank side fixing portion to which the leg of the mounting clip can enter, and a through hole to which the leg of the mounting clip can enter is provided at the center of the clip fixing member. There is. For this reason, when the leg portion of the mounting clip is inserted into the through hole of the clip fixing member, the leg portion of the mounting clip can be held in the recess of the tank side fixing portion, and the mounting clip and the clip fixing member securely protect Parts can be held.

According to the present invention of claim 4, the fuel tank for an automobile is provided with a rotation preventing portion of the clip fixing member in the tank side fixing portion, and a rotation locking portion which is engaged with the rotation preventing portion in the clip fixing member. It is a mounting structure of parts.

According to the fourth aspect of the present invention, the tank side fixing portion is provided with the rotation preventing portion for preventing the rotation of the clip fixing member, and the clip fixing member is provided with the rotation locking portion engaged with the rotation preventing portion. For this reason, it is possible to prevent the clip fixing member from rotating and coming off from the tank side fixing portion due to vibration or the like of the automobile.

According to the invention of claim 5, the mounting clip has a head and a leg, wherein the leg is engaged with the clip fixing member, and the head clamps the protective part. It is a mounting structure.

In the present invention of claim 5, the mounting clip has a head and a leg, the leg being engaged with the clip fixing member, and the head holding the protective component. Therefore, by attaching the leg portion of the mounting clip to the clip fixing member, the protective component can be reliably held between the head of the mounting clip and the clip fixing member.

According to a sixth aspect of the present invention, the tank side fixing portion is formed so as to protrude outward from the outer surface of the outer wall of the fuel tank, or formed by denting the outer wall of the fuel tank in the inner direction It is the attachment structure of the protection parts to the fuel tank for motor vehicles in which the fixing | fixed part was formed.

In the present invention according to claim 6, when the tank side fixing portion is formed to project outward from the outer surface of the outer wall of the fuel tank, the protective component can be attached slightly away from the fuel tank. It is possible to prevent direct transmission of shocks and the like to the fuel tank.
When the tank side fixing portion is formed by indenting the outer wall of the fuel tank in the inward direction and the tank side fixing portion is formed in the recessed portion, the mounting space of the protective component can be reduced.

The present invention of claim 7 is an attachment structure of a protective component to a fuel tank for a motor vehicle having a gap provided between the fuel tank and the protective component.

According to the seventh aspect of the present invention, since the gap is provided between the fuel tank and the protective component, the shock to the protective component is not directly transmitted to the fuel tank, and the external heat conduction is prevented. Yes, the heat insulation effect is excellent.

Since the mounting clip for attaching the protective component to the tank side fixing part and the clip fixing member for locking the mounting clip are attached, the clip fixing member is attached to the tank side fixing part and the mounting clip is attached to the clip fixing member only The protective parts can be securely attached to fuel tanks for automobiles.
Since the tank side fixing portion and the clip fixing member form a spiral spiral groove portion or a projection to be fitted into the spiral groove portion, the clip fixing member is easily screwed into the tank side fixing portion. It can be installed.

It is sectional drawing of the state which attached the clip fixing member to the tank side fixing | fixed part which is embodiment of this invention, and clamped the protection component by a mounting clip and a clip fixing member. It is the perspective view seen from diagonally upward of the state which attached the clip fixing member to the tank side fixing part which is an embodiment of the present invention. It is a top view in the state where a clip fixed member was attached to a tank side fixed part which is an embodiment of the present invention. It is sectional drawing along the AA fiber of FIG. 3 of the state which attached the clip fixing member to the tank side fixing part which is embodiment of this invention. FIG. 5 is a cross-sectional view taken along the B-B fiber of FIG. 3 in a state where the clip fixing member is attached to the tank side fixing portion according to the embodiment of the present invention. It is the perspective view seen from diagonally upward of the tank side fixing | fixed part which is embodiment of this invention. It is a top view of the tank side fixing part which is an embodiment of the invention. FIG. 2 is a cross-sectional view of a tank side fixing portion according to an embodiment of the present invention, which protrudes from a fuel tank. FIG. 3 is a cross-sectional view in which a tank side fixing portion according to an embodiment of the present invention is formed to be recessed inside a fuel tank. It is the perspective view seen from diagonally upward of the clip fixing member which is an embodiment of the present invention. It is a bottom view of a clip fixed member which is an embodiment of the present invention. It is the perspective view seen from diagonally upward of the fuel tank used for this invention. It is a bottom view of the fuel tank which provided the tank side fixing part in the bottom of the fuel tank used for the present invention. It is sectional drawing of the state which attached the protective member to the conventional fuel tank. It is a perspective view in the state where a protection member was attached to other conventional fuel tanks.

The mounting structure of the insulator 50 which is a protective member to the fuel tank 10 for an automobile according to the embodiment of the present invention will be described based on FIGS.
In the fuel tank 10 used in the embodiment of the present invention, as shown in FIG. 12, a pump unit mounting hole 16 is formed on the upper surface for taking a fuel pump (not shown) or the like into and out of the fuel tank 10 A pump unit mounting lid 17 is mounted for closing the pump unit mounting hole 16 and mounting the fuel pump in the fuel tank 10.

Further, an inlet pipe connecting portion 18 is attached to the fuel tank 10, which is connected to an inlet pipe (not shown) for injecting fuel into the fuel tank 10 from a filler port (not shown) provided on the vehicle body. Also attached is a fuel pipe 19 for delivering fuel from the fuel pump to the engine. Further, an electric cord for driving the fuel pump and various pipes for adjusting the evaporated fuel in the fuel tank 10 are attached.

A plurality of tank mounting flanges 11 are provided on the side of the fuel tank 10. The tank mounting flange 11 is dispersedly formed at the boundary between the upper portion and the lower portion of the fuel tank 10, and a tank mounting hole 12 is formed at the center of the tank mounting flange 11. The tank mounting flange 11 is fixed to a tank mounting portion (not shown) of the floor panel of the vehicle body.

The fuel tank 10 is made of metal or synthetic resin, but in the present invention, the synthetic resin fuel tank 10 is used, and the synthetic resin fuel tank 10 is molded by blow molding or injection molding. be able to. As shown in FIG. 13, at the same time as forming the fuel tank 10, a tank side fixing portion 20 described later is integrally formed with the fuel tank 10.

In the case of a fuel tank 10 made of synthetic resin, one formed of a layer of high density polyethylene (HDPE) or high density polyethylene (HDPE), or one formed of a multilayer structure of a skin layer, a barrier layer and a body layer Can be used. In the case of a multi-layered structure, the skin layer and the body layer may be made of thermoplastic synthetic resin having high impact resistance and maintaining rigidity against fuel oil, and may be made of high density polyethylene (HDPE) preferable. As the thermoplastic synthetic resin constituting the barrier layer, for example, ethylene vinyl alcohol copolymer (EVOH), polybutylene terephthalate, polyphenylene sulfide (PPS) or the like is preferably used.

An insulator 50 which is a protective component is attached to the fuel tank 10. The insulator 50 is attached to the bottom of the fuel tank 10 as a heat insulating member of the fuel tank 10 or for protection against an impact such as a stepping stone from the road surface. The insulator 50 is formed in a plate shape, and is formed of metal or synthetic resin.

A plurality of tank side fixing portions 20 are integrally formed on the bottom wall 14 of the fuel tank 10 for attachment of the insulator 50. A mounting clip 40 for mounting the insulator 50 to the tank side fixing portion 20 and a clip fixing member 30 for locking the mounting clip 40 are mounted.
The shapes of the tank side fixing portion 20, the clip fixing member 30, and the mounting clip 40 will be described, and a structure for attaching the insulator 50 using them will be described later.

First, the tank side fixing unit 20 will be described based on FIGS. 4 to 9.
As shown in FIG. 6, the tank side fixing portion 20 is formed in a cylindrical shape, and a spiral spiral groove portion to which a clip fixing member 30 described later is attached is formed on the outer periphery. In the present embodiment, as shown in FIGS. 6 and 7, the first spiral groove 21 and the second spiral groove 22 are formed on the left and right side surfaces 24. The number of spiral groove portions may be two or more, or one.

The upper surface 23 of the tank side fixing portion 20 is formed on a plane. An upper surface 33 of the clip fixing member 30, which will be described later, abuts on the upper surface 23 of the tank side fixing portion 20, and the clip fixing member 30 can be held.
A first spiral groove 21 and a second spiral groove 22 are formed spirally from the upper surface 23 of the tank side fixing portion 20 to the vicinity of the lower portion of the side surface 24.

At a central portion of the tank side fixing portion 20, a clip recess 26 into which a leg portion 42 of a mounting clip 40 described later can enter is formed.
A rotation preventing portion 25 is formed from the lower end of the side surface 24 of the tank side fixing portion 20 in order to prevent the clip fixing member 30 from rotating. At the root of the rotation preventing portion 25, a rotation preventing portion concave portion 25 a for storing the tip of the side surface 34 of the clip fixing member 30 is formed.

The tank side fixing portion 20 can be formed to protrude outward from the outer surface of the outer wall 15 of the fuel tank 10, as shown in FIG. Further, as shown in FIG. 9, the outer wall 15 of the fuel tank 10 can be formed to be recessed in the inward direction of the fuel tank 10, and can be formed outward in the recessed portion.

When the tank side fixing portion 20 is formed to protrude outward from the outer surface of the outer wall 15 of the fuel tank 10, the insulator 50 which is a protective component can be attached slightly away from the fuel tank 10. It is possible to prevent the shock, heat and the like from being directly transmitted to the fuel tank 10.

When the tank side fixing portion 20 is formed by indenting the outer wall 15 of the fuel tank 10 in the inward direction of the fuel tank 10 and is formed outward in the recessed portion, the tank side fixing portion 20 is formed of the fuel tank 10 The mounting space of the insulator 50 can be reduced without protruding from the outer surface of the outer wall 15. Further, direct impact or the like on the tank side fixing portion 20 can be prevented.

Next, the clip fixing member 30 will be described based on FIGS. 4, 5, 10 and 11. The clip fixing member 30 is formed in a cylindrical shape as shown in FIG.
As shown in FIG. 10 and FIG. 11, inside the clip fixing member 30, a first engaging protrusion which is a protrusion to be fitted into the first spiral groove 21 and the second spiral groove 22 of the tank side fixing portion 20 described above Two of the portion 31 and the second engagement protrusion 32 are formed.

In the present embodiment, since two helical grooves are formed, two protrusions are also formed, but the same number of protrusions are formed corresponding to the number of helical grooves.
In the present embodiment, the spiral groove is formed in the tank side fixing portion 20 and the protrusion is formed in the clip fixing member 30. However, the spiral groove is formed in the clip fixing member 30, and the protrusion is on the tank side It can also be formed on the fixing portion 20.

The upper surface 33 of the clip fixing member 30 is formed flat, and a clip through hole 36 into which a leg portion 42 of the mounting clip 40 described later can enter is formed at the center of the upper surface 33. When the leg portion 42 of the mounting clip 40 is inserted into the clip through hole 36 of the clip fixing member 30, the leg portion 42 of the mounting clip 40 can be held by the clip recess 26 of the tank side fixing portion 20. It can be attached to the clip fixing member 30, and the insulator 50 can be reliably held.

A protrusion forming hole 37 is formed at a position corresponding to the first engaging protrusion 31 and the second engaging protrusion 32 on the upper surface 33 of the clip fixing member 30. In this case, when molding the first engagement projection 31 and the second engagement projection 32, the slide core of the mold for forming the first engagement projection 31 and the second engagement projection 32 is taken in and out. It is for.

Two rotation locking portions 35 are formed in the lower part of the side surface 34 of the clip fixing member 30. When the clip fixing member 30 is attached to the tank side fixing portion 20, the rotation locking portion 35 engages with the rotation preventing portion 25 of the tank side fixing portion 20 to prevent the clip fixing member 30 from rotating. The fixing member 30 can be prevented from coming off the tank side fixing portion 20.

Next, the mounting clip 40 will be described based on FIG.
The mounting clip 40 has a head 41 and legs 42. When the leg portion 42 of the mounting clip 40 is inserted into the clip through hole 36 of the clip fixing member 30, the leg portion abutting surface 42a of the leg portion 42 abuts on the back surface of the upper surface 33 of the clip fixing member 30, and the mounting clip 40 It can be installed. At this time, the leg portion 42 of the mounting clip 40 can pass through the mounting hole 51 of the insulator 50, and the head portion 41 of the mounting clip 40 can clamp the insulator 50 together with the upper surface 33 of the clip fixing member 30.

Next, a state where the clip fixing member 30 is attached to the tank side fixing portion 20 and the insulator 50 is attached by the attaching clip 40 will be described based on FIGS. 1 to 5.
As shown in FIG. 13, four tank side fixing portions 20 are integrally formed on the bottom wall 14 of the fuel tank 10. Although the number of tank side fixing parts 20 can be selected appropriately, the number which can attach insulator 50 certainly is required.

The clip fixing member 30 is rotated and fitted into the tank side fixing portion 20. The first engagement protrusion 31 and the second engagement protrusion 32 of the clip fixing member 30 are fitted into the first spiral groove 21 and the second spiral groove 22 of the tank side fixing portion 20. Then, as shown in FIGS. 2 to 5, the clip fixing member 30 is fixed to the tank side fixing portion 20.

At that time, the rotation locking portion 35 of the clip fixing member 30 is rotated beyond the rotation prevention portion 25 of the tank side fixing portion 20 and engaged with the rotation prevention portion 25. Therefore, the clip fixing member 30 does not come off the tank side fixing portion 20 even by the vibration of the automobile or the like.
The lower end of the side surface 34 of the clip fixing member 30 is held by the rotation prevention portion concave portion 25a of the tank side fixing portion 20 as shown in FIG. 4, and the rotation locking portion 35 of the clip fixing member 30 is fixed on the tank side. It is engaged with the rotation preventing portion 25 of the portion 20.

Thereafter, as shown in FIG. 1, the insulator 50 is placed on the upper surface 33 of the clip fixing member 30, and the leg portion 42 of the mounting clip 40 passes through the mounting hole 51 formed in the insulator 50 and the clip through hole 36 of the clip fixing member 30. Insert The leg portion 42 of the mounting clip 40 is locked to the back surface side of the upper surface 33 of the clip fixing member 30, and the head 41 of the mounting clip 40 and the upper surface 33 of the clip fixing member 30 can hold the insulator 50.

At this time, the clip concave portion 26 to which the leg portion 42 of the mounting clip 40 can be inserted is formed at the center of the tank side fixing portion 20, so the leg portion 42 of the mounting clip 40 is the clip concave portion 26 of the tank side fixing portion 20. The insulator 50 can be reliably held between the mounting clip 40 and the clip fixing member 30.

Therefore, it is not necessary to weld the tank side fixing portion 20 and the clip fixing member 30 by welding, and the clip fixing member 30 is rotated and fitted to the tank side fixing portion 20 and fixed to the tank side fixing portion 20. The insulator 50 can be easily attached to the fuel tank 10 simply by inserting the attachment clip 40 into the clip fixing member 30.
In addition, the tank side fixing portion 20, the clip fixing member 30, and the insulator 50 do not come off even when the fuel tank 1 expands or swells.

DESCRIPTION OF SYMBOLS 10 fuel tank 20 tank side fixing | fixed part 21 1st spiral groove 22 2nd spiral groove 30 clip fixing member 31 1st engagement protrusion part 32 2nd engagement protrusion part 40 attachment clip 50 insulator

Claims (7)

In the mounting structure of protective parts to a fuel tank for a car mounted under a floor panel of a car,
A tank side fixing portion for holding the protective component is integrally formed on the bottom or side of the fuel tank, and a mounting clip for attaching the protective component to the tank side fixing portion, and a clip for locking the mounting clip Attach the fixing member,
The tank side fixing portion forms a spiral spiral groove portion to which the clip fixing member is attached, and the clip fixing member forms a projection to be fitted into the spiral groove portion of the tank side fixing portion.
Alternatively, the clip fixing member forms a spiral spiral groove portion to which the tank side fixing portion is attached, and the tank side fixing portion forms a projection to be fitted into the spiral groove portion of the clip fixing member.
A fuel tank for an automobile characterized in that the tank side fixing portion and the clip fixing member are fixed by the spiral groove portion and the projection portion, and the protective component is held by the mounting clip and the clip fixing member. Mounting structure of protective parts. The structure for attaching a protective component to a fuel tank for a vehicle according to claim 1, wherein a plurality of the spiral groove portion and the projection portion are formed on the tank side fixing portion and the clip fixing member. The recess part which the leg of the attachment clip can enter is provided at the center of the tank side fixing part, and the through hole where the leg of the attachment clip can enter is provided at the center of the clip fixing member. The attachment structure of the protection part to the fuel tank for motor vehicles of Claim 2. The tank side fixing portion is provided with a rotation preventing portion for preventing rotation of the clip fixing member, and the clip fixing member is provided with a rotation locking portion to be locked to the rotation preventing portion. The attachment structure of the protection part to the fuel tank for motor vehicles as described in any one of Claims. The mounting clip according to any one of claims 1 to 4, wherein the mounting clip has a head and a leg, the leg being engaged with the clip fixing member, and the head holding the protective component. Mounting structure of protective parts to the fuel tank for vehicles described. The tank side fixing portion is formed so as to protrude outward from the outer surface of the outer wall of the fuel tank, or the outer wall of the fuel tank is recessed in the inner direction, and the tank side fixing portion is formed in the recessed portion A mounting structure of a protective part to a fuel tank for a motor vehicle according to any one of claims 1 to 5. The mounting structure of a protective component to a fuel tank for a motor vehicle according to any one of claims 1 to 6, wherein a gap is provided between the fuel tank and the protective component.

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