JPH11325019A - Synthetic resin screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the strength of a synthetic resin screw itself by providing adhesive injection holes constituted of a stem hole bored from the center of a head section toward a screw section and branch holes communicated with the stem hole and opened at the outside ends of the screw section. SOLUTION: Injection holes 5 of an adhesive S are provided on a synthetic resin screw 1, and the injection holes 5 are constituted of a stem hole 6 bored linearly from the center of the cross grooves 4 provided on a head section 2 to the tip of a screw section 3 and multiple branch holes 7 bored at prescribed intervals in the longitudinal direction of the screw section 3 and communicated with the stem hole 6. Four branch holes 7 are bored radially in different directions apart by 90 deg. against the stem hole 6. The adhesive S is filled in the stem hole 6 and the branch holes 7, the adhesive S is hardened with the elapse of time, the synthetic resin screw 1 itself is strengthened, and screwing can be made firm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin screw.

[0002]

2. Description of the Related Art Conventionally, there has been a synthetic resin screw, but the place where the screw is used is limited in terms of strength.

Further, in recent pachinko machines, a front frame is formed of synthetic resin in terms of design, and a synthetic resin member such as a glass door frame, upper and lower ball trays, and lamp decoration is provided on the front surface. Many metal screws have been used for assembling and attaching these synthetic resin members.

[0004]

However, in recent years, due to the problem of industrial waste disposal, when disposing of pachinko machines,
It is necessary to sort synthetic resin members and metal members,
Therefore, since many metal screws must be removed from the synthetic resin member, the operation is very troublesome and troublesome.

The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to increase the strength of a synthetic resin screw itself and to assemble a synthetic resin member. It is intended to make the mounting firm and secure, and eliminate troublesome work such as dismantling sorting at the time of disposal.

[0006]

In order to achieve the above object, the present invention provides a synthetic resin screw in which a head and a screw portion are integrally formed, and is drilled from the center of the head to the screw portion. An injection hole for adhesive is provided, which is composed of a trunk hole and a branch hole communicating with the trunk hole and opening at the outer end of the screw portion, and an adhesive is injected into the injection hole with the synthetic resin screw being screwed. The trunk hole and the branch hole were filled with an adhesive, and the adhesive hardened with time to strengthen the synthetic resin screw itself and tighten the screw.

It is preferable that a plurality of the branch holes are provided radially in different directions with respect to the trunk hole.

The synthetic resin screw is preferably colored, and by using a screw colored in a color suitable for the place where it is used, it is possible to eliminate a sense of incongruity during use.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A synthetic resin screw according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a synthetic resin screw, and FIG. 2 is a longitudinal sectional view thereof. Reference numeral 1 denotes a screw in which a head 2 and a screw portion 3 are integrally formed of a synthetic resin material, and has a cross groove 4 in the center of the upper surface of the head 2 for inserting a blade of a driver.

The synthetic resin screw 1 has an adhesive S
Injection hole 5 is provided. The injection hole 5 has a trunk hole 6 that linearly penetrates from the center of the cross groove 4 provided in the head 2 to the tip of the screw portion 3, and communicates with the trunk hole 6 to extend the length of the screw portion 3. And a plurality of branch holes 7 formed at predetermined intervals in the direction. The branch holes 7 are radially opened in different directions with respect to the trunk hole 6, and in the present embodiment, four branch holes 7 are provided at 90 degrees with respect to the trunk hole 6.

A pachinko machine using the synthetic resin screw 1 having the above configuration will be described. As shown in FIG. 3, the pachinko machine 8 has a front frame 10 made of synthetic resin on the front of the outer frame 9.
The game board 11 is detachably mounted on the rear side of the front frame 10. Then, a synthetic resin glass door frame 13 is provided so as to cover the game section 11a surrounded by the guide rail 12 attached to the front surface of the game board 11, and a synthetic resin front plate 14 is further opened and closed under the glass door frame 13, respectively. I'm wearing

A lamp decoration 15 made of synthetic resin is mounted on the upper part of the glass door frame 13, an upper ball receiving tray 16 made of synthetic resin for supplying a ball to the front of the front plate 14 is mounted, and a lower part of the front frame 10 is mounted. The lower ball tray 17 made of synthetic resin for storing the surplus balls of the upper ball tray 16 is attached to the lower ball tray 17. These lamp decorations 15 and upper ball saucer 16
The lower ball receiving tray 17 is attached and fixed at a plurality of positions by screwing the screws 1.

Specifically, two lamp decorations 15 are attached to the glass door frame 13 from the front side of the pachinko machine 8.
Attachment of the upper supply tray 16 to the front plate 14 and the lower ball tray 17 to the front frame 10 are carried out by screwing four synthetic resin screws 1 respectively. Then, after screwing, the adhesive S is injected into the injection hole 5, and the injected adhesive S
Is filled from the trunk hole 6 to each branch hole 7 as well. The adhesive S
It is preferable to use a solvent such as dichloromethane.

As shown in FIG. 4, the adhesive S filled in the main hole 6 and the branch holes 7 is hardened with time and the synthetic resin screw 1
The screw 1 made of synthetic resin is reinforced by the adhesive S which has been strengthened and penetrated from the outer end of each branch hole 7 to the outer periphery of the screw portion 3.
For example, the glass door frame 13, the lamp decoration 15, the front panel 1
4 and the upper supply tray 16 and the front frame 10 and the lower ball receiving tray 17 are adhered and fixed to each other and are securely mounted. Further, by forming the screw 1 with a colored synthetic resin, even if the lamp decoration 15, the upper supply tray 16 and the lower ball receiving tray 17 are directly attached with the screw 1 from the front side of the pachinko machine 8, it can be used without discomfort. . The synthetic resin screw 1 of the present invention can be used in a wide variety of fields without being limited to the above-described pachinko machine assembly.

[0015]

As described above, according to the present invention, since the injection hole for the adhesive is provided in the synthetic resin screw, the adhesive is injected from the injection hole while the synthetic resin screw is tightened. By filling the trunk hole and each branch hole with the adhesive, the adhesive hardens over time to strengthen the screw itself, and when used when attaching the synthetic resin member to the synthetic resin member, The attachment between the synthetic resin member and the synthetic resin member can be made firm. Further, when disposing, it is not necessary to disassemble and sort, and it is possible to save the trouble of removing metal screws one by one as in the related art.

[Brief description of the drawings]

FIG. 1 is a perspective view of a synthetic resin screw according to the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a front view of a pachinko machine using a synthetic resin screw according to the present invention.

FIG. 4 is a longitudinal sectional view showing a use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screw 2 Head 3 Screw part 5 Injection hole 6 Trunk hole 7 Branch hole

Claims (1)

[Claims] 1. A synthetic resin screw in which a head portion and a screw portion are integrally formed, wherein a stem hole drilled from the center of the head portion to the screw portion, and an outer end of the screw portion communicating with the stem hole. A synthetic resin screw provided with an adhesive injection hole including a branch hole that opens.