WO2015159594A1

WO2015159594A1 - Mounting/demounting structure for built-in part for fuel tank

Info

Publication number: WO2015159594A1
Application number: PCT/JP2015/055595
Authority: WO
Inventors: 武田　邦男; 拓未中島
Original assignee: 八千代工業株式会社
Priority date: 2014-04-18
Filing date: 2015-02-26
Publication date: 2015-10-22
Also published as: JP6298696B2; JP2015205552A

Abstract

Provided is a mounting/demounting structure for a built-in part for a fuel tank, the mounting/demounting structure enabling the built-in part to be highly accurately and easily affixed at a predetermined position within the fuel tank, the mounting/demounting structure also enabling the built-in part to be easily demounted after the affixation. A mounting/demounting structure for a built-in part for a fuel tank is provided with: a mounting-receiving member (20) provided to the inner wall of the fuel tank (1); and a section (30) to be mounted, the section (30) to be mounted being mounted to and demounted from the mounting-receiving member (20). The mounting-receiving member (20) is provided with: a base (21) welded to the inner wall of the fuel tank (1); a neck (22) continuous with the base (21); and a head (23) continuous with the neck (22). The section (30) to be mounted is provided with a base (35); an engagement groove (31) provided in the base (35) and allowing the neck (22) to engage therewith; an elastic engagement section (32) provided near the engagement groove (31) and allowing the head (23) to engage therewith; and an unlocking operation section (36) provided to the elastic engagement section (32) and releasing the head (23) from the elastic engagement section (32).

Description

Detachment structure of built-in parts in fuel tank

The present invention relates to an attachment / detachment structure for a built-in component in a fuel tank.

Conventionally, it is known that a built-in component is mounted in a resin fuel tank mounted on an automobile or the like. As a built-in component, for example, there is a wave extinguishing plate that suppresses the ripple of fuel. By fixing the wave-dissipating plate in the fuel tank, it is possible to reduce the undulation noise. As a structure for fixing such a wave-eliminating plate, there is a structure described in Patent Document 1, for example. In this technique, a wave-dissipating plate (an internal skeleton in Patent Document 1) is directly welded and fixed to the inner wall of the fuel tank at a plurality of locations.

Special table 2013-505161

However, for example, when welding a wave-dissipating plate to a fuel tank, there is a problem that advanced technology is required to accurately weld wave-dissipating plates, which are relatively large parts, at a plurality of locations. This problem is common to other built-in components built into the fuel tank in addition to the wave-cancelling plate. Further, there is a problem that the built-in component cannot be replaced as a single unit after the welding and fixing.

The present invention has been created to solve such a problem. The built-in component can be easily fixed at a predetermined position in the fuel tank with high accuracy, and the built-in component can be easily fixed after the fixing. It is an object of the present invention to provide a detachable structure of a built-in component in a detachable fuel tank.

In order to solve the above-described problems, a built-in component attaching / detaching structure for a fuel tank according to the present invention is provided on an inner wall of the fuel tank and a mounted member on the fuel tank, and is attached to and detached from the attached member. A mounting structure for attaching and detaching a built-in component in a fuel tank, wherein the attached member includes a base part provided on an inner wall of the fuel tank, a neck part continuous with the base part, and a continuous part with the neck part And the mounting portion is provided on the base, an engagement groove that is engaged with the neck, and is provided in the vicinity of the engagement groove. It is provided with the elastic latching | locking part to latch, and the cancellation | release operation part which is provided in the said elastic latching | locking part, and cancels | releases the locking of the said head by the said elastic latching | locking part

According to this configuration, when the built-in component is mounted in the fuel tank, the engagement groove provided in the mounting portion of the built-in component is engaged with the neck portion of the mounted member provided on the inner wall of the fuel tank. If it does so, since an elastic latching | locking part will be latched with respect to the head of a to-be-attached member, a to-be-attached member will be hold | maintained and retained in an engagement groove | channel. As a result, the built-in component is attached to the fuel tank so as not to drop off.
When removing the built-in parts from the fuel tank, the release operation unit is operated. If it does so, latching of the elastic latching | locking part with respect to the head of a to-be-attached member will be cancelled | released, and an attaching part can be removed from a to-be-attached member. As a result, the built-in component can be removed from the fuel tank.

In addition, a restriction wall that rises from the base is provided on the side of the release operation part, and the release operation part comes into contact with the restriction wall when the elastic locking part is deformed by an external force. Is preferred. According to such a configuration, when an external force is applied to the elastic locking portion, the release operation portion comes into contact with the restriction wall, so that excessive deformation of the elastic locking portion can be prevented.

Further, it is preferable that a pair of side wall portions rising from the base portion is provided so as to guide the attached member into the engaging groove. According to such a configuration, the attached member can be suitably guided into the engagement groove through the pair of side wall portions. Thereby, the operation | work which attaches a built-in component in a fuel tank, and the operation | work which removes a built-in component from the inside of a fuel tank are easy to do.

Moreover, it is preferable that a grip portion is provided on the base portion. According to such a configuration, the attaching portion can be moved by grasping the grasping portion during attachment / detachment. Thereby, the operation | work which attaches a built-in component in a fuel tank, and the operation | work which removes a built-in component from the inside of a fuel tank are easy to do.

Further, the built-in component has a mounting portion that can be mounted on a support portion standing on the inner wall of the fuel tank, and rotates around the support portion by mounting the mounting portion on the support portion. The mounted member is disposed on a rotation locus of the mounting portion when the built-in component is rotated around the support portion, and the built-in component rotates around the support portion. By doing so, it is preferable that the attachment portion is detachable from the attached member.

According to this configuration, when mounting the built-in component in the fuel tank, the mounting portion of the built-in component is mounted on the support portion that is erected on the inner wall of the fuel tank, and is supported in the direction in which the mounting portion approaches the mounted member. Rotate the built-in equipment around the part. If it does so, an attaching part will approach an attached member, an attaching part will engage with an attached member, and a built-in component will be fixed in a fuel tank. Further, when removing the built-in component from the fuel tank, after operating the release operation part to release the locking of the elastic locking part with respect to the head of the attached member, the attaching part is detached from the attached member. The built-in equipment is rotated around the support part. If it does so, engagement of the attachment part with respect to a to-be-attached member will be cancelled | released, and a built-in component can be removed from the inside of a fuel tank.

According to the structure for attaching and detaching a built-in component in the fuel tank of the present invention, the built-in component can be easily fixed at a predetermined position in the fuel tank with high accuracy, and the built-in component can be easily removed after fixing.

It is the perspective view which showed the attachment / detachment structure of the built-in components in the fuel tank which concerns on one Embodiment of this invention, and saw through the fuel tank from upper direction. It is a perspective view which shows the wave-extinguishing board fixed to the to-be-attached member. It is a figure which shows a to-be-attached member, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is a perspective view. (A) is a perspective view which shows the wave-cancelling board as a built-in component, (b) is an expansion perspective view of the principal part. It is an expansion perspective view which shows an attaching part. It is a figure which shows an attaching part, (a) is a front view, (b) is a top view, (c) is the sectional view on the AA line of (a). (A)-(d) is explanatory drawing which shows the mode at the time of an assembly | attachment. It is a perspective view which shows the engagement state of a to-be-attached member and an attaching part. It is a figure which shows the engagement state of a to-be-attached member and an attaching part, (a) is a front view, (b) is a top view, (c) is the BB sectional drawing of (a). It is a top view explaining the effect | action in an engagement state. It is a fragmentary perspective view which shows a mode when the force of the arrow X3 direction in FIG. 10 acts. It is a perspective view which shows operation at the time of releasing engagement.

Embodiments of the present invention will be described below with reference to the drawings.
A fuel tank 1 shown in FIG. 1 is made of resin, stores fuel such as gasoline therein, and is mounted on moving means such as an automobile, a motorcycle, and a ship. The fuel tank 1 is a type that is wide and thin in the vertical direction. The fuel tank 1 is formed of a thermoplastic resin including a barrier layer.

The wave tank 10 as a built-in component is attached to the fuel tank 1. The detachable structure of the wave canceling plate 10 in the fuel tank 1 is such that a clip 20 (see FIGS. 1 and 2) as a member to be attached is welded and fixed to a predetermined position of the bottom surface 1a in the fuel tank 1, and the fixed clip 20 In addition, a wave-dissipating plate 10 is attached and fixed to both the columnar portion 4 as a support portion provided upright in the fuel tank 1. Moreover, it has the structure which can remove the wave-cancelling board 10 from both the clip 20 and the columnar part 4 as needed after fixation.

As shown in FIG. 1, the columnar portion 4 is a columnar portion connected to the bottom surface 1 a and the top surface 1 b of the fuel tank 1. The shape of the columnar part 4 is not particularly limited, but in this embodiment, the flat cross section is circular. The columnar portion 4 can improve the deformation resistance and strength of the fuel tank 1. The columnar portion 4 does not necessarily have to connect the bottom surface 1a and the top surface 1b, and may be a columnar portion standing from the inner surface (including side surfaces) of the fuel tank 1.

A pump mounting hole 2 is formed through the top surface 1 b of the fuel tank 1. A pump (not shown) for pumping fuel out of the tank is attached to the pump mounting hole 2.
As shown in FIG. 1, the clip 20 is welded and fixed to the bottom surface 1 a of the fuel tank 1 facing the pump mounting hole 2. Considering the fixing operation of the wave-cancelling plate 10, it is preferable to fix the clip 20 to the bottom surface 1 a facing the top surface 1 b around the pump mounting hole 2. In the present embodiment, as will be described later, when the wave canceling plate 10 is rotated around the columnar portion 4, the clip 20 is disposed on the rotation locus of the engagement groove 31 described later.

The clip 20 is made of a resin material. The resin material of the clip 20 may be any material as long as it can be welded to the fuel tank 1, but in this embodiment, the same material as that of the fuel tank 1 is used. As shown in FIGS. 3A and 3B, the clip 20 includes a base portion 21 welded to the inner wall of the fuel tank 1, a neck portion 22 that continues to the base portion 21, and a head portion 23 that continues to the neck portion 22. Yes.

The base portion 21 has a bottomed cylindrical shape. The bottom surface of the base body 21 is heated and welded to the bottom surface 1 a (see FIGS. 1 and 2) of the inner wall of the fuel tank 1.
The neck portion 22 has a smaller diameter than the base portion 21 and the head portion 23, and is a portion to which an engagement groove 31 of the mounting portion 30 described later is engaged. As shown in FIG. 3A, the outer surface of the neck portion 22 is formed in a curved concave shape toward the center portion.
The head 23 has a disk shape. The head 23 has a large diameter portion 23a and a small diameter portion 23b. The large diameter portion 23a is formed to have the same diameter as the base portion 21. The small diameter portion 23 b has a smaller diameter than the large diameter portion 23 a and a larger diameter than the neck portion 22. The small diameter portion 23b is a portion where the locking portion 32a of the elastic locking portion 32 of the mounting portion 30 described later is locked. Moreover, the upper surface 23c of the head 23 is formed flat.

Such a clip 20 is welded and fixed to a predetermined position on the bottom surface 1a of the fuel tank 1 as shown in FIG. 1 when the fuel tank 1 is molded, or after the fuel tank 1 is molded, for example, The clip 20 is inserted from the pump mounting hole 2 by a robot mechanism (not shown) and welded and fixed at a predetermined position.

1 and 2, the wave canceling plate 10 is a plate-like member that suppresses the undulation of the fuel in the fuel tank 1. As shown in FIG. 4A, the wave canceling plate 10 includes a first shape portion 11, a second shape portion 12, a first flexible portion 13, a second flexible portion 14, a mounting portion 19, It has the attachment part 30 and is comprised.

The first shape portion 11 has a plate shape, and the attachment portion 30 is integrally formed at the lower end on one side. A plurality of penetrating round holes 15 are formed in the first shape portion 11. The second shape portion 12 extends from the upper end side of the first shape portion 11 to the side. The height dimension of the second shape portion 12 is smaller than the height dimension of the first shape portion 11.

The first flexible portion 13 is formed in a wave shape at the boundary between the first shape portion 11 and the second shape portion 12. The second flexible portion 14 is formed in a wave shape near the center of the second shape portion 12.

The attachment portion 30 is a portion that is attached and fixed to the clip 20 fixed to the bottom surface 1a of the fuel tank 1 (see FIGS. 1 and 2). As shown in FIG. 4 (b), the attachment portion 30 includes a flat plate-like base portion 35 straddling two

support portions

16 a and 16 a erected vertically on one surface side of the first shape portion 11. The first shape portion 11 is fixed so as to stand on the bottom surface 1 a of the fuel tank 1 via the clip 20. Details of the mounting portion 30 will be described later.

The mounting part 19 is a part engaged with the columnar part 4 of the fuel tank 1 as shown in FIG. The mounting portion 19 includes a first arm portion 19a and a second arm portion 19b that have a substantially arc shape in plan view, and folded

portions

19c and 19d formed at the tips of the first arm portion 19a and the second arm portion 19b, respectively. It is configured.

The first arm portion 19 a protrudes from the other surface of the second shape portion 12 in an arc shape in plan view at the base end of the second shape portion 12. The curvature of the first arm portion 19 a is substantially equal to the curvature of the outer peripheral surface of the columnar portion 4. At the tip of the first arm portion 19a, a folded portion 19c that is bent inward and folded back is formed.

The second arm portion 19b protrudes from the other surface of the second shape portion 12 in an arc shape in plan view between the first arm portion 19a and the second flexible portion 14. The curvature of the second arm portion 19 b is substantially equal to the curvature of the outer peripheral surface of the columnar portion 4. The total length of the second arm portion 19b is shorter than the total length of the first arm portion 19a. At the tip of the second arm portion 19b, a folded portion 19d that is bent inward and folded back is formed. Note that the mounting portion 19 is not limited to the above-described configuration, and may be appropriately formed according to the shape, position, and the like of the columnar portion 4.

The distance between the folded

portions

19 c and 19 d is smaller than the outer diameter of the columnar portion 4. Therefore, when the columnar portion 4 is inserted from the turned-

back portions

19c and 19d, the first arm portion 19a and the second arm portion 19b are spread away from each other, but the restoring force of the first arm portion 19a and the second arm portion 19b. Thus, the columnar portion 4 is sandwiched and fixed. Moreover, since the outer peripheral surface of the columnar part 4 can be smoothly moved by providing the turn-

back parts

19c and 19d, it is easy to engage with the columnar part 4.

As shown in FIG. 4B, an engagement groove 31 is formed in the base portion 35 of the attachment portion 30. The neck 22 (see FIG. 3A) of the clip 20 can be engaged with the engagement groove 31. As shown in FIGS. 5 and 6,

elastic locking portions

32, 32 formed symmetrically in the left-right direction are arranged in the vicinity of the opening of the engagement groove 31. As shown in FIG. 6B, a hook-shaped groove 32 b is formed around the elastic locking portion 32. The elastic locking portion 32 is provided so as to be elastically deformable in the vertical direction (the thickness direction of the base portion 35) with respect to the base portion 35. As shown in FIGS. 6 (a) and 6 (c), a step portion 35a having a thickness thinner than other portions is formed at a portion corresponding to the elastic locking portion 32 on the bottom surface of the base portion 35. Thereby, the elastic locking part 32 is thin and easily deformed.

As shown in FIG. 6B, the elastic locking portion 32 includes a flat plate-like support portion 32A continuous to the base portion 35, and an inclined portion 32B provided continuously to the support portion 32A. The inner edge portion 32c of the support portion 32A extends in a tapered shape toward the insertion port 39. As shown in FIG. 6C, the inclined portion 32B is formed to be inclined obliquely upward as it goes rearward. The inclined portion 32B has an inner edge portion 32d (see FIG. 6B) that partitions the groove narrower than the inner edge portion 32c of the support portion 32A. As shown in FIG. 6B, the inner edge portion 32d of the inclined portion 32B is continuous with the inner edge portion 31a of the engagement groove 31 with the groove portion 32b interposed therebetween in plan view.

At the rear end corner portion of the inclined portion 32B, an arc concave locking portion 32a is formed. When the clip 20 moves to the innermost position of the engagement groove 31, the locking portion 32 a comes into contact with the small diameter portion 23 b of the head portion 23 of the clip 20 or is disposed so as to be opposed with a minute gap (see FIG. (Refer FIG.7 (d) and FIG. 8). That is, the locking part 32 a is locked to the small diameter part 23 b of the head 23 from the insertion port 39 side of the engagement groove 31. In the present embodiment, a fine gap is formed between the locking portion 32a and the small diameter portion 23b, as shown in FIG. 9B. By having this gap, a release operation (push-down operation) described later is facilitated.

As shown in FIG. 5, a release operation portion 36 having a vertically long rectangular parallelepiped shape is integrally provided on the upper surface of the rear portion of the elastic locking portion 32. The release operation part 36 is a part for pushing down the elastic locking part 32. As described later, by pushing down the release operation portion 36 after fixing, the locking portion 32a facing the small diameter portion 23b of the head portion 23 is moved to a position (in the groove around the neck portion 22) that is disengaged from the small diameter portion 23b. Can be moved. That is, by pushing down the elastic locking portion 32, the locking of the locking portion 32a with respect to the small diameter portion 23b of the head 23 can be released.

As shown in FIGS. 6 (a) and 6 (b), a pair of restriction walls 37 that rise from the base portion 35 are formed on the side of the release operation portion 36. The restriction wall 37 is disposed symmetrically with respect to the insertion port 39. The restriction wall 37 has an L shape in plan view. A groove portion 32 b is formed between the release operation portion 36 and the restriction wall 37 along the shape of the restriction wall 37. When the elastic locking portion 32 is deformed by receiving an external force from the clip 20, the release operation portion 36 is brought into contact with the restriction wall 37. As a result, the restriction wall 37 restricts the collapse of the release operation part 36 more than necessary to the front side due to the deformation of the elastic locking part 32.

A grip portion 38 is integrally provided on the regulation wall 37. The grip part 38 includes a pair of left and right

side wall parts

38a, 38a and a construction part 38b constructed between the

side wall parts

38a, 38a. The side wall portion 38 a is a wall that rises from the base portion 35 and is continuously formed on the front side of the restriction wall 37. The side wall part 38 a extends in the front-rear direction in the vicinity of the left and right of the insertion port 39. The interval between the

side wall portions

38 a and 38 a is slightly larger than the outer diameter of the head portion 23 (23 a) of the clip 20. Such

side wall portions

38 a and 38 a function as left and right guide walls for guiding the clip 20 into the engagement groove 31. In addition, you may provide the control wall 37 and the side wall part 38a independently.
The installation portion 38 b is disposed above the insertion port 39. An insertion space S1 that allows the head portion 23 of the clip 20 to be inserted is formed between the insertion port 39 and the installation portion 38b. The installation portion 38 b functions as a vertical guide wall for guiding the clip 20 into the engagement groove 31.

As shown in FIG. 5, a plurality of ribs 34 extending in the front-rear direction are provided around the inner edge portion 31 a of the engagement groove 31. The ribs 34 are not necessarily provided.
A vertical wall 33 is provided behind the inner edge 31 a of the engagement groove 31. The vertical wall 33 has an arc shape in plan view. The vertical wall 33 faces the head portion 23 of the clip 20 engaged with the engagement groove 31 and holds the head portion 23 of the clip 20.

Next, a procedure for attaching and fixing the wave-dissipating plate 10 to the inner wall of the fuel tank 1 will be described.
First, one clip 20 is welded to a predetermined position on the bottom surface 1 a in the vicinity of the pump mounting hole 2 in the fuel tank 1.

Next, the wave breaker plate 10 is inserted into the fuel tank 1 from the pump mounting hole 2. At this time, if the wave-dissipating plate 10 is difficult to enter from the pump mounting hole 2, the wave-dissipating plate 10 is bent into the pump mounting hole 2 while bending the second shape portion 12 with the first flexible portion 13 and the second flexible portion 14. Insert into a shape that is easy to put in.

Next, the mounting portion 19 of the wave eliminating plate 10 is engaged with the columnar portion 4 in the fuel tank 1. After this engagement, the gripping portion 38 of the mounting portion 30 of the wave-dissipating plate 10 is pinched with fingers, and the wave-dissipating plate 10 is rotated around the columnar portion 4 to bring the mounting portion 30 closer to the clip 20. Then, the engagement groove 31 of the attachment portion 30 is engaged with the neck portion 22 of the clip 20.
Since the inner edge portion 32c of the support portion 32A is tapered toward the insertion port 39, even if the neck portion 22 is slightly displaced in the left-right direction at the insertion port 39, the inner edge of the support portion 32A is located on the neck portion 22. The part 32c can be suitably engaged. Therefore, even if the neck portion 22 is slightly displaced in the left-right direction at the insertion port 39, the engagement operation can be continued without interrupting the engagement operation.

Here, when the 2nd space | interval of the attachment fixing | fixed part 16 and the mounting part 19 of the wave-dissipating plate 10 is shorter than the 1st space | interval of the columnar part 4 and the neck part 22 of the clip 20, the 1st of the wave-dissipating plate 10 is. If the flexible portion 13 is extended and the second interval is adjusted to the first interval, the engagement groove 31 of the attachment portion 30 can be properly engaged with the neck portion 22 of the clip 20.

On the contrary, if the second interval is longer than the first interval, the engagement groove 31 of the attachment portion 30 is clipped by the clip 20 by contracting the first flexible portion 13 and adjusting the second interval to the first interval. It is possible to properly engage with the neck portion 22.

When the engagement groove 31 of the attachment portion 30 is engaged with the neck portion 22 of the clip 20, as shown in FIG. 7A, first, the inner edge portion 32 c of the support portion 32 </ b> A of the elastic locking portion 32 with respect to the neck portion 22. Then, as shown in FIG. 7B, both the inner edge portion 32c of the support portion 32A and the inner edge portion 32d of the inclined portion 32B are engaged with the neck portion 22. By this engagement, the inclined portion 32B is elastically deformed so that the inner edge portion 32d of the inclined portion 32B fits in the groove of the neck portion 22 (in a state along the groove of the neck portion 22). And the inclined part 32B passes the side of the neck part 22 in the state elastically deformed in this way (refer FIG.7 (c)).

When the wave-dissipating plate 10 is further rotated, the innermost portion of the engagement groove 31 is engaged with the neck portion 22, and as shown in FIGS. 7 (d), 9 (a) and 9 (b), The inclined portion 32B that has passed through the side of the neck portion 22 is released from the neck portion 22 and elastically returns to the original inclined state.
By this elastic return, the rear end portion of the inclined portion 32B rises to the front side of the clip 20, and the locking portion 32a is arranged in a positional relationship facing the small diameter portion 23b of the head portion 23 from the insertion port 39 side (FIG. 9 ( c)).
As a result, the clip 20 is held in the engagement groove 31 (see FIGS. 8 and 9).

With the clip 20 held in the engagement groove 31 in this way, for example, as indicated by white arrows X1 to X3 in FIG. When is operated, the elastic locking portion 32 operates as follows.

For example, when the clip 20 comes into strong contact with the elastic locking portion 32 in the direction of the white arrow X3 in the figure, the inclined portion 32B of the elastic locking portion 32 is interposed via the locking portion 32a as shown in FIG. The inclined portion 32B is elastically deformed by being pressed by the small diameter portion 23b of the head portion 23. If it does so, the cancellation | release operation part 36 will incline and the cancellation | release operation part 36 will contact | abut inside the control wall 37. FIG. By this contact, further inclination of the release operation part 36 is prevented, and deformation of the elastic locking part 32 is also prevented.

As a result, the state in which the clip 20 is retained in the engagement groove 31 is maintained. Moreover, since the deformation | transformation more than the predetermined of the elastic latching | locking part 32 is blocked | prevented, damage to the elastic latching | locking part 32 can be prevented.
Even when the clip 20 strongly contacts in the directions of the white arrows X2 and X3 in FIG. 10, the deformation of the elastic locking portion 32 is preferably prevented in the same manner, and the clip 20 is pulled out into the engagement groove 31. The state of being stopped and held is maintained.

Next, a procedure for removing the wave breaker plate 10 fixed to the inner wall of the fuel tank 1 will be described.
First, a hand or a tool (not shown) is inserted from the pump mounting hole 2, and the

release operation parts

36 and 36 of the mounting part 30 are pushed down in the direction of the white arrow Y1 in FIG.
Then, the inclined portion 32B of the elastic locking portion 32 is pushed down, and the locking portion 32a that is disposed opposite to the small diameter portion 23b of the head portion 23 of the clip 20 moves downward. In this case, the push-down operation is performed until the locking portion 32a is positioned in the groove of the neck portion 22. Thereby, the latching state by the elastic latching | locking part 32 is cancelled | released.

Next, in a state where this push-down operation is performed, the gripping portion 38 is pinched with a finger, and the attachment portion 30 is rotated backward with respect to the clip 20. Then, as shown in FIG. 7 (c), the inclined portion 32B passes through the side of the neck portion 22 in a state of being elastically deformed, and then, as shown in FIG. The inclined portion 32B moves. As a result, the engagement groove 31 is detached from the clip 20 (neck portion 22), and the attachment portion 30 can be removed from the clip 20.

Thereafter, the mounting portion 19 of the wave-dissipating plate 10 is removed from the columnar portion 4 in the fuel tank 1 and the wave-dissipating plate 10 is taken out from the pump mounting hole 2 to the outside. Thereby, the wave-cancelling plate 10 fixed to the inner wall of the fuel tank 1 can be removed.

In addition, when attaching, the engaging part 31 may be attached to the columnar part 4 after the engaging groove 31 is first engaged with the clip 20. Further, when removing, the mounting portion 19 may be removed from the columnar portion 4 and then the engagement with the clip 20 may be released.

According to the structure for detaching a built-in component in the fuel tank according to the present embodiment described above, the engagement of the engagement groove 31 of the wave breaking plate 10 with the clip 20 makes it possible to remove the head 23 of the clip 20 from the insertion port 39 side. Since the elastic locking part 32 (locking part 32a) is locked with respect to the small diameter part 23b, it is possible to perform the mounting while suitably preventing the mounting part 30 from being detached from the clip 20. Thereby, the wave-cancelling plate 10 can be easily fixed at a predetermined position in the fuel tank 1 with high accuracy.

After fixing, the release operation part 36 is pushed downward to release the engagement of the elastic locking part 32 (locking part 32a) with the small diameter part 23b of the head part 23 of the clip 20, whereby the clip 20 The attachment part 30 can be easily removed from Accordingly, the wave canceling plate 10 fixed in the fuel tank 1 can be easily removed from the fuel tank 1.

Also, since the attachment portion 30 is provided with the grip portion 38, the attachment portion 30 can be moved by gripping the grip portion 38. Therefore, the work for attaching the wave-cancelling plate 10 in the fuel tank 1 and the work for removing the wave-cancelling plate 10 from the fuel tank 1 are easy to perform, and the workability is excellent. Moreover, since the grip part 38 is provided over the insertion port 39, the periphery of the insertion port 39 can be suitably reinforced by the grip part 38.

Moreover, since the columnar part 4 is provided in the fuel tank 1 and the wave-dissipating plate 10 is provided with a mounting part 19 to be attached to the columnar part 4, the wave-dissipating plate 10 or the wave-dissipating plate is attached. When removing 10, the wave-dissipating plate 10 can be rotated around the columnar portion 4 to attach / detach the attachment portion 30 to / from the clip 20. Therefore, the attachment / detachment structure of this embodiment is excellent in assemblability.

Further, since the restriction wall 37 is provided on the side of the release operation part 36, the elastic deformation when an external force is applied to the elastic locking part 32 can be suitably suppressed. Thereby, engagement of the engagement groove 31 of the attachment part 30 with respect to the neck part 22 of the clip 20 can be suitably maintained over a long period of time.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be variously modified as follows, for example.
For example, in the above-described embodiment, the elastic locking portion 32 is provided on the insertion port 39 side in the vicinity of the engagement groove 31, but is not limited thereto, and the head portion 23 of the clip 20 is locked. If present, the engaging groove 31 may be provided at the left and right side positions.
Further, for example, the clip 20 has a substantially cylindrical shape in the above-described embodiment, but is not limited thereto, and various types of clips 20 can be used as long as they can be engaged with the engagement groove 31 and held off. The shape can be adopted. Further, the clip 20 may be fixed to the inner wall of the fuel tank 1 by a method other than welding.
Further, the gripping portion 38 is configured by laying the erection portion 38b between the

side wall portions

38a and 38a. A portion that can be gripped may be provided at another place on the grip 35 to constitute the grip portion.
Moreover, in the said embodiment, although the clip 20 was provided in the bottom face 1a of the fuel tank 1, it is not restricted to this, It is provided in the other surface (including top | upper surface 1b) of the fuel tank 1, and comprises a detachable structure. May be.
Moreover, as a built-in component, the various components with which the pump and the fuel tank 1 are equipped other than the wave-cancelling board 10 are mentioned.

1 Fuel tank 10 Wave breaker (built-in parts)
20 clips (attached members)
21 Base part 22 Neck part 23 Head part 30 Attachment part 31 Engagement groove 35 Base part 32 Elastic locking part 32a Locking part 36 Release operation part 38 Gripping part

Claims

A mounting / removal structure for a built-in component in a fuel tank, comprising: a mounted member provided on an inner wall of the fuel tank; and a mounting portion provided on a built-in component of the fuel tank and attached to and detached from the mounted member,
The attached member includes a base portion provided on an inner wall of the fuel tank, a neck portion continuing to the base portion, and a head portion continuing to the neck portion,
The mounting portion includes a base, an engagement groove provided on the base and engaged with the neck, an elastic engagement portion provided in the vicinity of the engagement groove, and engaging the head. A structure for attaching and detaching a built-in component in a fuel tank, comprising: a release operation portion that is provided in an elastic locking portion and releases the locking of the head by the elastic locking portion.
On the side of the release operation part, a restriction wall rising from the base part is provided,
2. The structure for attaching and detaching a built-in component in a fuel tank according to claim 1, wherein when the elastic locking portion is deformed by receiving an external force, the release operation portion comes into contact with the restriction wall.
2. The structure for attaching and detaching a built-in component in a fuel tank according to claim 1, wherein a pair of side wall portions rising from the base portion are provided so as to guide the attached member into the engagement groove.
The fuel tank built-in component attachment / detachment structure according to claim 1, wherein the base portion is provided with a grip portion.
The built-in component has a mounting portion that can be mounted on a support portion standing on the inner wall of the fuel tank, and can be rotated around the support portion by mounting the mounting portion on the support portion. Yes,
The attached member is disposed on a turning locus of the attaching portion when the built-in component is turned around the supporting portion;
The built-in component in the fuel tank according to claim 1, wherein the mounting part is detachable from the mounted member by rotating the built-in part around the support part. Detachable structure.