JP2003139110A - Attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable engagement parts 54 at a plurality of parts to easily engage with attaching holes and to maintain large interference for high engagement force in attaching a flange 42 of an inlet filler pipe 40 on a bottom wall of an oil feed box. SOLUTION: Positioning parts 53 and engagement parts 54 are projectingly provided as units on the flange 42 at concentric four parts. The positioning parts 53 are rotatably formed at designated allowable angles around a rotating shaft of the flange 42 to define a position in the allowable angle range. The engagement parts 54 are composed of elastic arms 54a, 54a as units with the positioning parts 53. A position in X direction is defined by fix engagement members 52X1, 52X2 and a position in Y direction is defined by fix engagement members 52Y1, 52Y2. Engagement recess parts 54b of the elastic arms 54a, 54a engage with attachment holes on the bottom wall with interference.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting to a mounting member by engaging means such as engaging claws and clips, and an inlet pipe provided with this structure.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure of this type, the technique disclosed in Japanese Utility Model Laid-Open No. 63-51827 is known. That is, it is a means for mounting an automobile inlet pipe on a refueling box, in which a plurality of mounting holes are formed in the refueling box, the engaging claws are engaged with the mounting holes, and the engaging claws are attached by the retaining device. It is a configuration that regulates the escape from the exit.

As another technique, there is also known a technique of mounting an inlet pipe on an oil supply box by engaging a plurality of resin engaging claws or clips with a mounting hole without using a stopper. (Japanese Patent Laid-Open No. 2001-97055)
Issue).

[0004]

However, due to the design of the refueling box, it is sometimes desired to engage the engaging claws at four corners, and in order to position the engaging claws in the mounting holes at four or more locations. , Requires skill. In particular, when working from below the vehicle body such as mounting an inlet pipe, the work is particularly troublesome. In this case, if the permissible dimension between the engaging claw and the mounting hole is increased to facilitate workability, the engaging claw causes a large displacement from the mounting hole, the tightening margin is reduced, and the engaging force is weakened. On the other hand, when the allowable dimension is reduced to increase the tightening margin, there is a problem that workability is reduced.

The present invention solves the above-mentioned problems of the prior art. It is easy to engage the engaging portions at a plurality of locations, the tightening margin can be increased, and a large engaging force can be obtained. An object of the present invention is to provide a mounting structure and an inlet pipe that can be used.

[0006]

Means for Solving the Problem and Its Action / Effect The present invention made to solve the above-mentioned problem is to mount the base material by engaging with a base material side engaging portion formed on the base material. In the mounting structure including the mounting member, the mounting member is a mounting member main body, and a plurality of mounting members are arranged on the mounting member main body so as to surround a rotating shaft of the mounting member main body.
Positioning means formed so as to be rotatable around the rotation axis at a predetermined allowable angle and positioned within the allowable angle range, and a plurality of positioning means on the attachment member main body, surrounding the rotation axis, and being flexible. And an engaging means having a plurality of engaging means, the engaging means corresponding to at least one of the positioning means and increasing or decreasing in a direction different from a direction in which the positioning means rotates at an allowable angle. And an engaging means that is engaged with the engaging portion.

In the mounting structure according to the present invention, the mounting member is mounted on the base material by the engaging means engaging with the base material side engaging portion of the base material while positioning by the plurality of positioning means of the mounting member. To be done. Since the plurality of positioning means are arranged so as to surround the rotation axis of the mounting member main body and are formed to be rotatable around the rotation axis at a predetermined allowable angle, the positioning can be performed while moving in the rotation direction. In this state, the engaging means can engage with the base material side engaging portion. At this time, the engaging means engages with the base material side engaging portion with a tightening margin that increases or decreases in a direction different from the direction in which the positioning means rotates within the allowable angle.

Therefore, even if the allowable angle for positioning by the positioning means is increased, the direction in which the engaging means moves at the time of positioning is different from the moving direction by the positioning means, so that the positioning is performed. Since the movement of does not significantly affect the increase or decrease of the tightening margin, it is possible to secure a larger tightening margin than a predetermined value and obtain a large engaging force.

Here, as a preferred mode of the positioning means and the engaging means, one or both of the plurality of positioning means or the engaging means are concentric about the rotation axis of the mounting member body, and It can be configured to be arranged at a corner of the mounting member main body. In addition, as a preferred aspect of the positioning means and the engaging means, the positioning means is a first arrangement in which the positioning means is arranged at two positions diagonally around the rotation axis.
The engaging means includes a first positioning portion for positioning in a directional direction and a second positioning portion for locating in a second direction orthogonal to the first direction and arranged at two locations diagonally with respect to the rotation axis. , A first engaging portion that is formed integrally with the first positioning portion and that has a tightening allowance that increases and decreases in the second direction, and a second engagement portion that is integrally formed with the second positioning portion and that has a tightening allowance that increases and decreases in the first direction And a section. As described above, even when the first and second positioning portions are arranged at four positions diagonally around the rotation axis, it is possible to easily perform the positioning after securing a predetermined tightening margin. .

Further, as a preferred mode of the positioning means and the engaging means, the first positioning portion and the first engaging portion are:
The second positioning part and the second engaging part may be arranged so as to have the same shape as that of the second positioning part and the second engaging part which are rotated by 90 ° in the same direction about the rotation axis.

The engaging means may be arranged in the same number as the positioning means, or may be arranged more than the positioning means so long as the rotation of the mounting member main body within the allowable angle is not hindered. Can be increased.

The mounting structure is not particularly limited as long as it is a means for engaging the base member and the mounting member while positioning them. For example, a vehicle body in which the base member is arranged around the fuel filler port of an automobile. It is a side member, and can be suitably applied to a configuration in which a mounting member is mounted in a narrow space, such as a case where the mounting member is mounted on a flange of an inlet pipe for guiding fuel to a fuel tank.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below in order to further clarify the constitution and operation of the present invention described above.

(1) Schematic Configuration of Fueling Device FIG. 1 is a perspective view showing the periphery of a fueling port of an automobile. The side member outer 20 of the automobile is provided with an oil supply port 22 which is opened and closed by an oil supply lid 21. The fuel filler port 22 is
It is formed in a recess by the oil supply box 23 (base material), and the neck portion 40 a of the inlet filler pipe 40 is fixed to the oil supply box 23. The inlet filler pipe 40 sends the fuel supplied from the fueling gun to the fuel tank, and the inlet 40b is opened and closed by the fuel cap FC.

FIG. 2 is a sectional view showing the periphery of the neck portion 40a of the inlet filler pipe 40. The inlet filler pipe 40 includes a pipe body 41 and a pipe body 4
1, a flange 42 formed on the outer periphery of the pipe 1, and a pipe body 41
And a breather pipe 45 branched from the side wall of the fuel cell, and is integrally molded of a fuel resistant resin. The pipe body 41 is
It has a fuel passage 40c for supplying fuel from the inlet 40b to the fuel tank.

Inlet 4 of inlet filler pipe 40
A base 50 is attached to 0b. The base 50 is a metal member for detachably mounting the fuel cap FC (FIG. 1). A screw part 51a for stopping the fuel cap is formed on the inner side of the base 50, and a gun support part 51b for positioning the refueling gun inserted at the time of refueling is formed on the bottom side thereof. There is.

(2) Positioning Structure of Flange 42 The flange 42 (mounting member) is integrally formed in a substantially square shape from the side wall of the pipe main body 41, and the cushion material 33 is sandwiched between the bottom wall 24 of the refueling box 23. Then, it is attached via the fixing member 52. 3 is a plan view showing the inlet filler pipe 40 attached to the bottom wall 24, and FIG. 4 is a flange 42 of the inlet filler pipe 40.
FIG. The fixing member 52 is a fixed engaging member 52X1, which is provided at four locations protruding from one surface of the flange 42.
52X2, 52Y1, 52Y2, and a mounting hole 24a formed in the bottom wall 24 of the refueling box 23.
By engaging the (base material side engaging portion), the flange 42
Is attached to the bottom wall 24. Fixed engagement member 52X
1, 52X2, 52Y1 and 52Y2 have the same shape, but are arranged in different directions as described later.

FIG. 5 is an enlarged perspective view showing a fixed engagement member 52X1 which is one of the fixed members 52. As shown in FIG. The fixed engagement member 52X1 includes a positioning portion 53 and an engagement portion 54. The positioning portion 53 includes a thin plate-shaped positioning body 53a that is vertically provided upright from the flange 42. The positioning body 53a is provided with a guide inclined side 53b that is an upper portion thereof and is inclined toward the outside, and a positioning side 53c formed on the outside thereof. The positioning side 53c has a play with the peripheral edge of the mounting hole 24a,
Within the range of this play, the positional variation allowable amount of the fixed engagement member 52X1 with respect to the mounting hole 24a is regulated.

The engaging portion 54 includes elastic arms 54a, 54a symmetrically projected from both sides of the positioning body 53a, and an engaging recess 5 formed at the tip of the elastic arms 54a, 54a.
4b and. Elastic arms 54a, 54a
Are elastically deformable so as to be contracted when they are inserted into the mounting holes 24a to narrow their intervals, and to expand when they pass through the mounting holes 24a. Further, the engagement recess 54b has a tightening margin for engaging with the peripheral edge of the mounting hole 24a. Mounting hole 2 within this tightening margin
It is possible to absorb variation (dimensional error) with respect to the position of 4a.

FIG. 6 is an explanatory view for explaining the arrangement of the fixing member 52, showing the inlet filler pipe 40 as seen from above and also the inlet filler pipe 40.
The axis O of is the origin and is represented in the X and Y directions. Four
One fixed engagement member 52X1, 52X2, 52Y1, 52
Y2 is arranged concentrically and is arranged so as to be sequentially rotated clockwise by 90 °. The fixed engagement members 52X1 and 52X2 are diagonally arranged about the axis O and are arranged in opposite directions, and the positioning side 53c acts as positioning in the X direction. On the other hand, the fixed engagement members 52Y1 and 52Y2 are also arranged diagonally around the axis, and the positioning side 53c acts as positioning in the Y direction.

Further, the above-mentioned arrangement is applied to the fixed engagement member 52X.
1, 52X2 elastic arms 54a, 54a spread in the Y direction, and the elastic arms 5 of the fixed engagement members 52Y1, 52Y2.
4a and 54a spread in the X direction and engage with the mounting holes 24a.

(3) Installation work of the inlet filler pipe 40 Next, as shown in FIG.
The operation of attaching 0 to the bottom wall 24 of the refueling box 23 will be described. First, holding the neck portion 40a of the inlet filler pipe 40, the fixing member 52 of the flange 42 is fixed.
Are aligned with the mounting holes 24a. At this time, as shown in FIG. 6, the guide inclined side 53b of the fixing member 52 is aligned with the mounting hole 24a. In this state, as shown in FIG. 5, the fixing member 52 is pushed into the mounting hole 24a. The guide inclined side 53b is guided into the mounting hole 24a along the edge of the mounting hole 24a.

At this time, as shown in FIG. 6, since the fixed engaging members 52X1, 52X2, 52Y1, 52Y2 are arranged concentrically with the axis O of the inlet filler pipe 40, the guide inclined side 53b is attached to the mounting hole 24a. The inlet filler pipe 40 can be displaced in the circumferential direction in the state of being aligned with. Therefore, the guide inclined side 5
If 3b is caught in the mounting hole 24a, the guide inclined side 53
The fixed engagement members 52X1, 52X2, 5 are guided by b.
2Y1 and 52Y2 are introduced into the mounting hole 24a.

Further, when the fixing member 52 is pushed into the mounting hole 24a, the fixed engaging members 52X1 and 52X2 are positioned in the X direction, and the fixed engaging members 52Y1 and 52Y2 are positioned in the Y direction while the engaging portion 54 is moved. Guide to the mounting hole 24a.
In this process, the elastic arms 54a, 54a are attached to the mounting holes 24.
The engagement recess 54b engages with the mounting hole 24a by being pushed by the peripheral edge of a, narrowing the interval, and then expanding. As a result, as shown in FIG. 2, the inlet filler pipe 4
The flange 42 of 0 is attached to the bottom wall 24 of the refueling box 23.

In the above-mentioned mounting work, the guide inclined side 53b
Is formed to be inclined outward from the axis O,
When the fixing member 52 is inserted into the mounting hole 24a, the assembling work is easy because the mounting allowable dimension is such that the upper end of the guide inclined side 53b is caught in the mounting hole 24a.

(4) Action and effect of the fixing member 52 FIG. 7 is an explanatory view for explaining the tightening margin of the fixing member 52.
FIG. 7 (A) shows an ideal assembled state with no dimensional error.
In this state, the engagement recess 54b of the engagement portion 54 has the tightening margin L.
It engages at the peripheral edge of the mounting hole 24a. Now, Fig. 7
As shown by the two-dot chain line in (B), the fixed engagement member 52X1
It is assumed that a dimensional error of Lr occurs in the Y direction. In this case, since the dimensional error is absorbed by both the fixed engaging member 52X1 and the fixed engaging member 52X2 (see FIG. 6), each elastic arm 54a, 54a is bent by Lr / 2 to absorb the dimensional error. (Right view of FIG. 7B). At this time, the fixed engagement members 52Y1 and 52Y2 shown in FIG.
Since it can slide in the mounting hole 24a in the Y direction, it does not hinder the movement of the flange 42. Further, the fixed engagement member 52X1 is replaced with another fixed engagement member 52X2, 52Y.
Adjusting so as to shift in the circumferential direction as shown in FIG. 7C while balancing with 1,52Y2 further reduces the dimensional error of Lr / 2. That is, in FIG. 8, when the radius from the fixed engagement members 52X1 and 52X2 to the axis O of the flange 42 is r, when the flange 42 is rotated counterclockwise about the axis O by an angle θ, the fixed engagement occurs. Member 5
2X1 and 52X2 respectively move in the central direction by a distance Le (= r-rcos θ) to narrow the distance. Distance L
e is a movement in the direction of decreasing Lr / 2, that is, a movement in the direction of reducing the elastic deformation of the elastic arm 54a and increasing the interference of the engagement recess 54b. Therefore, even if the fixed engagement member 52X1 has a dimensional error Lr,
Only the reduction of the interference by subtracting the distance of Le from Le / 2 occurs. Then, as shown in FIG. 7C, the fixed engagement member 5
Since the 2X1 positioning side 53c hits the peripheral edge of the mounting hole 24a, the movement in the circumferential direction is stopped, that is, the movement is restricted within an allowable angle, so that the engaging recess 54b does not largely disengage from the mounting hole 24a. Engagement is performed with a tightening margin of a predetermined value or more. In addition, the fixed engagement members 52 at four locations
Even when a dimensional error occurs in each of X1, 52X2, 52Y1, and 52Y2, the dimensional error is absorbed by the four fixed engaging members. That is, the elastic arm 54a,
By the elastic deformation of 54a and the movement in the circumferential direction, the fixed engagement members 52X1 and 52X2 and the fixed engagement members 52Y1 and 52Y2 can absorb dimensional errors, respectively, and can secure a tightening margin of a predetermined amount or more. .

Therefore, even if the permissible dimension for positioning by the positioning portion 53 is increased, when positioning is performed,
The engaging portion 54 moves in a direction different from the alignment direction by the positioning portion 53, that is, in the circumferential direction, in addition to the movement in the direction of bending the elastic arm 54a.
Since it does not significantly affect the reduction of the tightening margin of the engagement recess 54b, it is possible to secure a tightening margin of a predetermined amount or more and obtain a large engaging force.

The present invention is not limited to the above-described embodiments, but can be carried out in various modes without departing from the scope of the invention, and the following modifications can be made.

(1) In the above embodiment, the positioning portion and the engaging portion are formed integrally with the flange, but the present invention is not limited to this, and they may be formed by separate clips of the flange. Further, the engagement portion and the positioning portion can be various arrangements not limited to the concentric circles as long as they are arrangements that do not hinder the rotation of the flange.

(2) In the above-described embodiment, the base material side engaging portion has been described as an example of the mounting hole 24a formed in the flange 42. However, the present invention is not limited to this, and it is an engaging portion such as an engaging claw. May be.

[Brief description of drawings]

FIG. 1 is a perspective view showing the vicinity of a fuel filler port of an automobile.

FIG. 2 is a neck portion 40 of the inlet filler pipe 40.
It is a half cross-sectional view showing the periphery of a.

FIG. 3 is a plan view showing an inlet filler pipe 40 attached to a bottom wall 24.

4 is a perspective view showing a flange 42 of the inlet filler pipe 40. FIG.

FIG. 5 is a fixed engagement member 52X which is one of the fixed members 52.
It is a perspective view which expands and shows 1.

FIG. 6 is an explanatory diagram illustrating an arrangement of a fixing member 52.

FIG. 7 is an explanatory diagram illustrating the operation of positioning and fastening margin of the fixing member 52.

FIG. 8 is an explanatory diagram illustrating the operation of positioning and fastening margin of the fixing member 52.

[Explanation of symbols]

20 ... side member outer 21 ... Refueling lid 22 ... Filling port 23 ... Refueling box 24 ... Bottom wall 24a ... Mounting hole 33 ... Cushion material 40 ... Inlet filler pipe 40a ... neck 40b ... inlet 40c ... Fuel passage 41 ... Pipe body 42 ... Flange 45 ... Breather Pipe 50 ... clasp 51a ... screw part 51b ... Positioning unit 51b ... Gun support 52 ... Fixing member 52X1, 52X2 ... Fixed engagement member 52Y1, 52Y2 ... Fixed engagement member 53 ... Positioning unit 53 53a ... Positioning body 53b ... Guide slope 53c ... Positioning side 54a ... Elastic arm 54 ... engaging part 54b ... Engagement recess FC ... Fuel cap

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Zenichi Yasuda             Aichi Prefecture Kasuga-cho, Nishikasugai-gun Ochiai character Nagahata 1             Address within Toyoda Gosei Co., Ltd. (72) Inventor Tomokazu Hori             Aichi Prefecture Kasuga-cho, Nishikasugai-gun Ochiai character Nagahata 1             Address within Toyoda Gosei Co., Ltd. (72) Inventor Koji Miwa             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Takashi Ishikawa             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. F term (reference) 3D038 CA15 CC14 CD12                 3J001 FA02 HA02 HA10 JD24 KA12                       KB01

Claims (6)

[Claims] 1. A mounting structure comprising a mounting member mounted on the base material by engaging a base material side engaging portion formed on the base material, wherein the mounting member comprises a mounting member body, Positioning means arranged on the mounting member body and surrounding the rotation axis of the mounting member body so as to be rotatable around the rotation axis at a predetermined allowable angle and for positioning within the allowable angle range. And a plurality of flexible engaging means arranged on the mounting member main body so as to surround the rotary shaft, the engaging means corresponding to at least one of the positioning means, A mounting structure, comprising: engagement means that is engaged with the base material side engagement portion at a tightening margin that increases and decreases in a direction different from a direction in which the positioning means rotates at an allowable angle. 2. The mounting structure according to claim 1, wherein the plurality of engaging means are on a concentric circle of the rotating shaft,
Also, the mounting structure is arranged at each corner of the mounting member body. 3. The mounting structure according to claim 1 or 2, wherein the positioning means includes a first positioning portion which is diagonally arranged about a rotation shaft and which is positioned at two positions in a first direction, and A second positioning portion arranged diagonally around the rotation axis for positioning in a second direction perpendicular to the first direction, wherein the engaging means is integrally formed with the first positioning portion;
A mounting structure comprising: a first engaging portion having a tightening margin that increases and decreases in a direction; and a second engaging portion that is integrally formed with the second positioning portion and that has a tightening margin that increases and decreases in the first direction. 4. The mounting structure according to claim 3, wherein the first positioning portion and the first engaging portion are the same with respect to the second positioning portion and the second engaging portion by 90 ° about the rotation axis. Mounting structure that is arranged so that it has the same shape as the one that swivels in the direction. 5. The mounting structure according to any one of claims 1 to 4, wherein the engagement means is arranged more than the positioning means at a position that does not prevent rotation of the mounting member body within an allowable angle. . 6. The mounting structure according to any one of claims 1 to 5, wherein the base material is a vehicle body-side member arranged around a fuel filler port of an automobile, and the mounting member is a fuel tank. A mounting structure that is a flange of an inlet pipe for guiding fuel.