JPH01178439A - Method for mounting member to synthetic resin molded product - Google Patents

Abstract

PURPOSE:To make it possible to easily and strongly mount by a method wherein member mounting recesses are integrally molded with a molded product, which is made of hot-melt synthetic resin, and members are inserted in the member mounting recesses while the molded product is still under the heat-stored state so as to fix the members to the molded product through the utilization of the shrinkage of the molded product due to its lowering of temperature. CONSTITUTION:Each mounting plate 6 is molded of hot-melt synthetic resin with a mold into the predetermined shape. At this time, grooves 18, the bottom face of each of which is wider than its opening, are integrally molded on the under surface of the plate 6. The mounting plate 6, which is cured in the mold and is still under the heat-stored state, is demolded. After that, the implanting strip 19 of hooks 16 are inserted in each groove 18 of the plate 6. Each implanting strip 19 is made of rigid material having the width, which just fits to the wider portion at the bottom face of the groove 18, so as to project the hook 16 out of the opening portion of the groove to the under surface side of the plate 6. Since the width of the groove 18 becomes narrower due to the shrinkage, which is developed by the temperature fall through natural or forced cooling, the mounting plate 6 pinches the flocked batten 19 from both sides and at the same time pinchingly holds both side portions of the strip 19 in the direction of the thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a member attachment method for fixing another member to a resin molded product formed using a synthetic resin.

[Prior art and problems to be solved by the invention] When attaching other parts to a molded article made of synthetic resin, adhesive or welding means are used. This method requires a welding agent and a device for welding, which is time-consuming and labor-intensive, and the bonding strength is weak, making it unsuitable for attaching members that are subjected to force.

In addition, as a fixing method to improve the fixing strength, there is an insert method in which the component is embedded in a synthetic resin molded product, but because high heat acts on the component, there are restrictions on the material of the component that can be fixed, and the structure of the mold The problem is that it also becomes complicated.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for attaching members that can be easily and firmly attached to synthetic resin molded articles.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention integrally molds a component mounting recess into a molded product formed using heated and melted synthetic resin, and allows the component mounting recess to be inserted into the component mounting recess while the molded product is in a heat storage state. The structure is such that a member is inserted and the member is fixed to the molded product by utilizing shrinkage due to a decrease in temperature of the molded product.

[Effect]

When forming a synthetic resin molded article using a mold using molten synthetic resin, a recess for attaching a component is formed in the molded article, and the component is inserted into the recess while the molded article is in a heat storage state, and the molded article is The shrinkage caused by the temperature drop tightens the member and fixes it to the molded product.

(Example) Hereinafter, an example of the present invention will be described based on the attached drawings.

The drawings show an example in which the member attachment method of the present invention is applied to attachment of a hook to a plate in a mop fitting.

As shown in the figure, the board 3 attached to the tip of the gripping handle 1 using the joint mechanism 2 is formed in a horizontally elongated manner, and is oriented forward and backward with respect to the gripping handle 1 around axes 4 and 5 that are arranged at right angles to the joint mechanism 2. And it can swing freely left and right.

The motsu cloth mounting plate 6.6 attached to both sides of the board 3 is formed using a synthetic resin plate with a substantially rectangular plane and a flat bottom surface, and one end along the longitudinal direction is this end. It is supported on the lower surface of the substrate 3 by a pin 8 of a hinge mechanism 7 provided on the substrate 3 and the substrate 3. In this attachment, the plate 6 is a synthetic resin molded product, which is the subject of this invention.

For both of the above-mentioned attachments, the plate 6.6 is attached to the substrate 3 by being carried at positions on both sides sandwiching the widthwise center of the substrate 3 with a slight interval between them, as shown in FIG. It is rotatable in the center, and when opened to both sides, the upper surface of the carrying side overlaps the lower surface of the substrate 3, and is in a horizontal state.

Further, when it is rotated downward, it is in a hanging state below the substrate 3, as shown by the dotted chain line in FIG.

A pair of latching mechanisms 9 are attached to the overlapping portion of the board 3 and the plate 6 to maintain the horizontal state of the plate 6.
is provided.

As shown in FIG. 3, the latching mechanism 9 includes a headed pin 10 fixed to the substrate 3 so as to protrude downward, and a synthetic resin fixed to the plate 6 at a position corresponding to the headed pin 10. The hanging plywood 11 is provided with a hanging hole 12 through which the head 1Qa of the similar pin 10 is forcibly penetrated, and the plate 6 is installed so that the headed pin 10 fits loosely. It is screwed to the upper part of the through hole 13.

When the plate 6 is in a horizontal state, the latching mechanism 9 is attached.
When the mounting plate 6.6 is fixed to the substrate 3 and kept in a horizontal state, the gripping handle 1 is swung up and down to apply an impact force to the mounting plate 6.6. Due to the weight and inertia force, the locking mechanism 9 is disengaged, and the mounted plate 6.6 is no longer held horizontally and is placed in a hanging state.

Therefore, the horizontal installation does not require the use of special tools or equipment to bend the plate 6.6 into a hanging shape, and the bent installation requires that both installations be done in order to hold the plate 6.6 in the horizontal position. The plate 6.6 may be pressed gently against a flat surface such as a floor, and the latching mechanism 9 will engage in the horizontal state □.

The mop cloth 14, which is attached to the lower surface of the plate 6.6 in both attachments, is formed in a horizontally elongated manner so as to cover the lower surface of the plate 6.6;
A pair of hooks 15 are provided on the upper surface of the motsu cloth 14 which overlaps with the mop cloth 14, and are detachably attached to the plate 6.6.
A mop cloth 14 can be fixed to the lower surface of the mop cloth 14.

As shown in FIG. 3, the above-mentioned hanging device 15 is composed of a fastener that combines a hook 16 and a loop 17. Installed with fixed insertion, loop 1
7, the band plate 20 is sewn to the mop cloth 14.

In the illustrated case, the hooks 15 are installed at two locations on the front and back of the plate 6.6, but their positions and number can be freely selected.

In addition, when attaching both sides, the outer end, which is the other end of the plate 6.6, is inclined with respect to the front-rear direction, so that when cleaning the corner of the floor surface, the end of the mop cloth 14 can be positioned all the way to the corner. I'm trying to be able to do that.

The attachment method of the present invention is employed for attaching the hook 16 to the plate 6.6.

The mounting method is as follows: First, the plate 6 is molded into a predetermined shape using a mold using a heat-melting synthetic resin. - At this time, a concave groove 1 with a wide bottom surface is formed on the bottom surface of the plate 6.
8 is formed in one piece.

The attachment hardened in the mold is removed from the mold while the plate 6 is in a heat storage state, and the implant strip 19 of the hook 16 is inserted into the groove 18 of the removed plate 6.

For mounting in a heat storage state, the planting strip 19 is formed of a hard material with a width that just fits into the wide bottom part of the groove 18 of the plate 6, and the hook 16 is inserted into the groove 18 of the groove 18. The attachment will protrude from the opening to the lower surface side of the plate 6.

During installation, the plate 6 contracts due to a temperature drop due to natural or forced cooling, and the width of the concave groove 18 is pinched by the shrinkage, thereby pinching the planting strip 19 from both sides and simultaneously pressing the planting strip 19 from both sides. Clamp the parts in the thickness direction.

As a result, the hook 16 can be attached to the bottom side of the plate 6.
The implanted strip 19 is fixed in such a way that it cannot be removed, and the implanted strip 19 can be firmly fixed to the plate 6 without using adhesive or welding means.

It should be noted that attachment of the synthetic resin molded product is not limited to the plate 6 as shown in the drawings, and the member attached thereto may also be other than the hook 16 of the hook 15.

〔effect〕

As described above, according to the present invention, the member is attached to the synthetic resin molded product by inserting the member into the recess while the synthetic resin is in a heat storage state after demolding, and utilizing shrinkage caused by the temperature drop of the molded product. Since the component is fixed to the molded product using the adhesive, it is possible to attach the component to the synthetic resin molded product without using adhesive or welding means, and the component can be attached easily and firmly. It is possible to attach members that add

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a mop using the mounting method of the present invention, Fig. 2 is a front view of the same as above, and Fig. 3 is an arrow m--
FIG. 6... Mounting plate, 16... Hook, 18... Concave book, 1S...
... Planted strip.

Claims (1)

[Claims] A component mounting recess is integrally molded into a molded product formed using heated and melted synthetic resin, and the component is inserted into the component mounting recess while the molded product is in a heat storage state, taking advantage of shrinkage caused by the temperature drop of the molded product. A method for attaching components to synthetic resin molded products by fixing the components to the molded product.