JP2002036286A - Insert fitment and mounting structure of resin molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that an insert fitment 4 is difficult to be removed at a recycling time because the fitment 4 prevents a creep deformation of a resin 5 by a clamping axial force of a bolt 2 and a recess and a protrusion provided on a periphery of the fitment 4 are provided to be engaged with the resin 5. SOLUTION: A tapered surface for radially enlarging from one toward the other is formed on a resin connecting surface 4b of the insert fitment 4. When an impact force is given to a small diameter side 4c at the recycling time, the fitment 4 is easily released to a large diameter side 4d, then removed to provide excellent recyclability. At a clamping time, an object 3 to be clamped is contacted with both the fitment 4 and the resin 5, and the fitment 4 does not have a fault of being released from the object 3 side. A washer 6 is contacted with both the fitment 4 and the resin 5, and the fitment 4 does not have the fault of being released from the washer 6 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insert fitting for insert-molding a resin molded product and a mounting structure for the resin molded product, and more particularly to recycling of the resin molded product.

[0002]

2. Description of the Related Art An insert metal fitting used for a fastening portion of a resin molded product, when receiving a fastening axial force between a fastening means and an object to be fastened, prevents the resin from being creep-deformed by the fastening axial force. This is to prevent it. Around the conventional insert fitting, there are provided concave portions and convex portions which engage with the resin, and when the resin molded product is fastened by fastening means such as bolts, the insert fitting is detached from the resin molded product. I was preventing it.

[0003]

When the resin molded article becomes a waste material, it is required to remove the insert for recycling. However, with a conventional structure,
It is difficult to remove the insert from the resin molded product, and it is not suitable for recycling. An object of the present invention is to easily remove an insert fitting from a resin molded product.

[0004]

The following operations and effects can be obtained by adopting the first and second means. When removing the insert from the resin molded product, an impact force is applied from the small diameter side of the insert by an impact applying means such as a hammer. Then, the insert fitting is detached from the resin molded product due to the impact force and the deformation of the resin due to the impact. That is, the insert fitting can be easily removed from the resin molded product, and the resin or metal can be easily recycled.

According to the third aspect of the present invention, since the outer diameter of the washer is set to be larger than the outer diameter of the insert fitting which comes into contact with the washer, the washer also comes into contact with the resin.
For this reason, it is possible to prevent the insert fitting from dropping from the resin molded product when the resin molded product is fastened.

In the case where the object to be fastened is larger than the large-diameter side of the insert, the large-diameter side of the insert is directed toward the object to be fastened, so that the object to be fastened is the insert. Since the contact member is in contact with both the resin and the resin, it is possible to prevent the insert fitting from dropping off from the resin molded product when the resin molded product is fastened.

When the object to be fastened is smaller than the large-diameter side of the insert, the small-diameter side of the insert is directed toward the object to be fastened, so that the object to be fastened is the same as the insert. Since it is possible to abut both of the resin, it is possible to prevent a problem that the insert fitting comes off from the resin molded product when the resin molded product is fastened.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described using two examples and modifications. FIG. 1 shows a fan shroud 1 of an automobile.
3 shows a mounting structure of (resin molded product). The fan shroud 1 is fastened to a fastening object 3 by bolts 2 (fastening means).
(E.g., a vehicle body or a mounting stay), and the insert fitting 4 is insert-molded during resin molding.

The insert fitting 4 is a metal ring for preventing the resin 5 from being creep-deformed by a fastening axial force generated between the bolt 2 and the object 3 to be fastened, and through which the male screw 2a of the bolt 2 is inserted. Male screw through hole 4a is formed. The resin joining surface 4b around the insert fitting 4 is formed with a tapered surface that expands in diameter from one end face to the other end face. When an impact force is applied to the small diameter side 4c of the insert fitting 4 with a hammer or the like. As shown in FIG. 2, the insert fitting 4 is provided on the large diameter side 4d of the insert fitting 4 so as to be easily peeled off.

In the first embodiment, the fan shroud 1
Is larger than the large-diameter side 4 d of the insert fitting 4. In such a case, as shown in FIG. 1, the large-diameter side 4 d of the insert 4 is directed toward the fastening target 3. Thereby, the fastening axial force received from the fastening object 3 can be received on the large diameter side 4d,
Since the object 3 to be fastened contacts both the insert metal 4 and the resin 5, there is no problem that the insert metal 4 comes off the fan shroud 1 at the time of fastening.

As described above, in the first embodiment, the large-diameter side 4d of the insert fitting 4 is directed toward the fastening object 3, and the small-diameter side 4c of the insert fitting 4 is directed toward the hexagonal portion 2b of the bolt 2. Can be A washer 6 is interposed between the hexagonal portion 2b and the insert fitting 4, and an outer diameter dimension A of the washer 6 is a dimension B of a small diameter side 4c of the insert fitting 4.
(A> B). With this arrangement, when the fan shroud 1 is fastened to the vehicle with the bolts 2, the washer 6 also comes into contact with the resin 5, so that there is no problem that the insert fitting 4 comes off the fan shroud 1 at the time of fastening.

When the fan shroud 1 becomes waste material such as when the vehicle is scrapped or when the fan shroud 1 is replaced, the fan shroud 1 is recycled for recycling.
It is necessary to remove the insert metal fitting 4 from the above. In such a case, as shown in FIG. 2, an impact force is applied from the small diameter side 4c of the insert fitting 4 by a hammer or the like. Then, by the impact force and the deformation of the resin 5 due to the impact,
The insert fitting 4 comes off the fan shroud 1. As described above, the fan shroud 1 to which the present invention is applied is:
The insert fitting 4 can be easily removed at the time of recycling.

[Second Embodiment] FIG. 3 shows a mounting structure of a fan shroud 1 (resin molded product) of an automobile. In the second embodiment, the same reference numerals as those in the first embodiment denote the same functional components as those in the first embodiment.

In the second embodiment, the object 3 to be fastened to the fan shroud 1 is
less than d. In such a case, insert fitting 4
Is directed to the fastening object 3 side. As a result, the fastening object 3 comes into contact with the insert fitting 4 and the resin 5, so that there is no problem that the insert fitting 4 comes off the fan shroud 1 at the time of fastening.

In the second embodiment, the small-diameter side 4c of the insert fitting 4 is directed toward the fastening object 3, and the large-diameter side 4d of the insert fitting 4 is directed toward the hexagonal portion 2b of the bolt 2. The outer diameter dimension C of the washer 6 interposed between the hexagonal portion 2b and the insert fitting 4 is provided to be larger than the dimension D of the large diameter side 4d of the insert fitting 4 (C>).
D). With this arrangement, when the fan shroud 1 is fastened to the vehicle with the bolts 2, the washer 6 also comes into contact with the resin 5, so that there is no problem that the insert fitting 4 comes off the fan shroud 1 at the time of fastening. Of course, in the second embodiment, as in the first embodiment, the insert fitting 4 can be easily removed from the fan shroud 1 during recycling.

[Modification] In the above embodiment, an example is shown in which the tapered surface is formed over the entire length of the insert fitting 4 in the axial direction. However, as shown in FIGS. May be formed as a tapered surface, or the tapered surface may be formed as a curved surface as shown in FIG. In the above embodiment, the fan shroud 1 is used as an example of a resin molded product.
However, the present invention may be applied to air intakes, air conditioning ducts, dashboards, and other resin molded products other than those for automobiles.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a mounting structure of a fan shroud (first embodiment).

FIG. 2 is an explanatory view of removing an insert fitting (first embodiment).

FIG. 3 is a schematic view showing a mounting structure of a fan shroud (second embodiment).

FIG. 4 is a view showing a tapered surface of an insert fitting (modification).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan shroud (resin molded product) 2 Bolt (fastening means) 3 Object to be fastened 4 Insert metal fitting 4a Male screw through hole 4b Resin bonding surface (tapered surface) 4c Small diameter side of insert metal fitting 4d Large diameter side of insert metal fitting 5 Resin 6 Washer

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Fumihiro Yamaguchi 1-4-1 Chuo, Wako-shi, Saitama F-term in Honda R & D Co., Ltd. (Reference) 3J001 FA02 GA06 GB01 HA02 JA03 4F206 AD03 AH06 AH17 JA07 JB12 JF05 JL02

Claims (5)

[Claims] An annular insert which is insert-molded in a state penetrating a resin molded product and receives a fastening axial force from a fastening means such as a bolt or a screw. An insert fitting characterized in that a tapered surface whose diameter increases toward the other surface is formed. 2. A resin molded product which is insert-molded in a state of being inserted through an annular insert having a male screw through-hole, fastening means such as a bolt or a screw inserted into the male screw through-hole, and said male screw through-hole. A mounting structure for a resin molded product comprising an object to be fastened to the fastening means inserted into the hole, and a resin joining surface around the insert fitting, from one surface to the other surface. A mounting structure for a resin molded product, characterized in that a tapered surface having an enlarged diameter is formed. 3. The mounting structure for a resin molded product according to claim 2, wherein the insert fitting receives a fastening axial force from the fastening means via a washer, and an outer diameter of the washer corresponds to the washer. A mounting structure for a resin molded product, wherein the mounting structure is provided so as to be larger than an outer diameter dimension of the insert fitting in contact therewith. 4. The mounting structure for a resin molded product according to claim 2, wherein the object to be fastened in contact with the resin molded product is larger than a large diameter side of the insert metal fitting. A mounting structure for a resin molded product, wherein a large-diameter side is directed toward the object to be fastened. 5. The mounting structure for a resin molded product according to claim 2, wherein the object to be fastened in contact with the resin molded product is smaller than a large diameter side of the insert metal. A mounting structure for a resin molded product, wherein a small diameter side is directed toward the object to be fastened.