JP2551669Y2 - FRP products with adjuster bolt - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to an FRP (fiber reinforced plastic) with an adjuster bolt for a waterproof pan for a bathroom or the like.
More particularly, the present invention relates to an FRP product with an adjuster bolt having an improved nut into which an adjuster bolt is screwed.

[0002]

2. Description of the Related Art In an FRP product such as a waterproof pan for a bathroom, an adjuster bolt is provided for leveling an installation posture. This adjuster bolt is 4th,
As shown in FIG. 5, it is screwed into a nut fixed to the bottom surface of an FRP product such as a waterproof pan.

In FIGS. 4 and 5, a waterproof pan 1 has a boss 2 formed integrally with ribs 3, 4, 5, and 6 on the bottom surface thereof. A hexagonal hole 7 is formed in the boss 2, and a hexagonal nut 8 is fitted in the hexagonal hole 7.
An adjuster bolt 9 is screwed into the nut 8.
Reference numeral 10 denotes a lock nut screwed into the adjuster bolt 9.

[0004]

In order to fix the nut 8 to the hexagonal hole 7, an adhesive is conventionally interposed in a gap between the hexagonal hole 7 and the nut 8. It takes time to cure. The protruding adhesive may adhere to the screw surface. Improper bonding of the adhesive causes poor curing. It takes time to work. There is such a problem.

[0005]

An FRP product with an adjuster bolt according to the present invention has an adjuster bolt in which a nut is inserted into a non-circular hole on the bottom of the FRP product and an adjuster bolt is screwed into a screw hole of the nut. In the FRP product, the nut is made of synthetic resin, a screw hole and a center hole are provided coaxially, and the screw hole of the nut is
The screw hole is screwed from the inlet side in the screwing direction to a middle part in the hole axis direction, and the screw hole is a tapered hole having a large diameter on the inlet side in the screwing direction and gradually reducing the diameter toward the middle part. The center hole of the nut is provided on the back side in the screw insertion direction from the middle part, and the center hole is larger in diameter than the screw hole, and the nut is A plurality of slits are provided from the side to reach the screw hole.

[0006]

In the FRP product with the adjuster bolt according to the present invention, when the bolt is screwed into the screw hole of the nut, the back side (leading side) of the nut is pushed open. That is, the screw hole is a tapered tapered hole, and a slit is provided in the leading side of the nut in a slit shape. Therefore, when the bolt is screwed into the screw hole, the slit expands. In this way, the nut leading side widens. Thereby, the nut is fixed to a non-circular hole such as a hexagonal hole. As described above, the adhesive for fixing the nut is not required, and the above problem is solved.

Since the inner side of the nut has a large-diameter central hole, even if the bolt is screwed deeply, the nut is not excessively pressed against the inner surface of the non-circular hole.

[0008]

Embodiments will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a synthetic resin nut (hereinafter, referred to as a resin nut) used for an FRP product according to an embodiment of the present invention, showing a cross section taken along line II of FIG. I have. FIG. 2 is a perspective view of the resin nut, and FIG. 3 is a longitudinal sectional view showing a standing structure of a foot bolt using the resin nut.

The resin nut 11 has a screw hole 12 and a center hole 13 at its axial center. The screw hole 12 extends to an intermediate portion in the longitudinal direction of the resin nut 11, and the inlet side 12a has a larger diameter than the intermediate portion 12b. That is, the screw hole 12 is a tapered screw hole whose diameter gradually decreases from the inlet side 12a toward the middle part 12b.

The center hole 13 is a straight circular hole having a larger diameter than the screw hole 12.

A slit 14 extends from the leading end (the upper end in FIGS. 1 to 3) of the resin nut 11 so as to extend over the screw hole 12. In this embodiment, six slits 14 are provided along the convex portion of the resin nut 11. Each slit 14, 14
Between them is a flexible piece 15.

The resin nut 11 thus configured is
As shown in FIG. 3, a hexagonal hole 7 of the boss 2 is formed, and a foot bolt 9 is screwed into a screw hole 12 of the resin nut 11. When the foot bolt 9 is screwed in, the leading end of the resin nut 11 is pushed open because the screw hole 12 is narrowed at the rear side. That is, the resin nut 11 is deformed so that the flexible piece 15 swells to the side. Then, the outer surface of the flexible piece 15 is pressed against the inner surface of the hexagonal hole 7, and the resin nut 11 is fixed to the boss 2. That is, the resin nut 11 can be fixed to the boss 2 without using an adhesive. After screwing the foot bolt 9 to a predetermined depth, the lock nut 10 is tightened to lock the foot bolt 9.

In FIG. 3, the tip of the foot bolt 9 is stopped at an intermediate portion of the screw hole 12, but the tip of the foot bolt 9 is deeply inserted into the center hole 13. May be screwed in. That is, since the screw hole 12 is cut off at the middle portion 12b, the foot bolt 9
Even if the screw is deeply screwed so as to reach the inside of the center hole 13, the resin nut 11 is not further applied with a large expanding force, and an excessively large stress in the expanding direction is applied to the boss portion 2. Is prevented.

In the present invention, for example, the resin nut 1
A small protrusion may be provided on the outer surface of the first member 1 so that when the resin nut 11 is widened with a foot bolt, the small protrusion is crushed.

In FIG. 3, the hexagonal holes 7 have the same size in the vertical direction. However, the hexagonal holes 7 may have a dovetail shape in which the back side slightly widens.

[0016]

As described above, in the FRP product with the adjuster bolt of the present invention, the resin nut is easily and extremely firmly fixed to the non-circular hole such as the hexagonal hole without using an adhesive. Can be. Therefore, the adjuster bolt can be mounted on the FRP product, or the level adjustment work of the FRP product (for example, waterproof pan) can be performed extremely easily and quickly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a resin nut used in an embodiment.

FIG. 2 is a perspective view of a resin nut used in the embodiment.

FIG. 3 is a longitudinal sectional view showing an embodiment.

FIG. 4 is a perspective view of a main part of a waterproof pan with foot bolts.

FIG. 5 is a sectional view taken along the line VI-VI in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterproof pan 2 Boss part 7 Hexagon hole 9 Foot bolt 11 Resin nut 12 Screw hole 13 Center hole 14 Slit 15 Flexible piece

Claims (1)

(57) [Scope of request for utility model registration] 1. An FRP product with an adjuster bolt in which a nut is inserted into a non-circular hole on a bottom portion of the FRP product and an adjuster bolt is screwed into a screw hole of the nut, wherein the nut is made of synthetic resin; A screw hole and a center hole are provided coaxially. The screw hole of the nut is screwed from the inlet side in the screw insertion direction to a halfway portion in the hole axis direction, and the screw hole is screwed. The inlet side in the insertion direction has a large diameter, and is a tapered hole that gradually reduces in diameter along the middle part. The center hole of the nut is provided on the back side in the screw insertion direction with respect to the middle part, and The center hole has a diameter larger than that of the screw hole, and the nut includes a plurality of slits extending from the inner side to the screw hole portion. Product.