JPH0225929Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wooden screw with a decorative cap, and more particularly, to a wooden screw with a decorative cap suitable for fastening articles and members such as sanitary ware.

[Prior art] In order to improve the appearance of sanitary ware, etc., the heads of wooden screws (hexagonal, countersunk, round, etc.) used for mounting and fixing are coated with the same color as the sanitary ware. A resin cosmetic cap is attached.

3 and 4 show an example of a conventional wooden screw with a decorative cap. FIG. 3 shows an example in which the head of the wooden screw is hexagonal, and FIG. 4 shows an example in which the head is dish-shaped.

In FIG. 3, a decorative cap 13 made of resin has a female screw 11 cut in the axial center of the head of the wooden screw 10, and a countersunk small screw 12 which is screwed into the female screw 11 is inserted. It is integrally attached by molding.

Further, in FIG. 4, a female screw 17 is cut at the axial center of the head of the countersunk screw 15. and,
This female screw 17 is attached to the cosmetic cap 18 made of resin.
A small countersunk screw 16 is attached by insert molding.

To use the wooden screws with decorative caps shown above, the wooden screws with the decorative caps 13 or 18 removed are used to attach sanitary ware, etc. Next, attach the countersunk screw 12 or 16 of the decorative cap 13 or 18 to the female screw 11 or 17 of the wooden screw 10 or 15.
Screw in. This hides the head of the wooden screw 10 or 15, improving the appearance.

Japanese Unexamined Utility Model Publication No. 53-55066 discloses a decorative cap made of synthetic resin and having legs that are inserted into the cross recesses of flat screws.

[Problems to be solved by the invention] Regarding the wooden screw with a decorative cap shown in Figures 3 and 4, it is necessary to cut a female thread into the wooden screw in order to attach the decorative cap, and Since it was necessary to insert mold the small screws and the cap, the manufacturing process was time-consuming and required a large number of parts. In addition, countersunk small screw 1
The reason why metal parts 2 and 16 are used is to prevent the screw threads from collapsing.

The decorative cap of Utility Model No. 53-55064 has a problem in that it easily comes off when touched. In other words, in the decorative cap of the same number, the decorative cap and the flat screw are engaged only by inserting the hollow cylindrical body of the cap into the cross hole of the flat screw, so it is difficult to touch the cap with just a slight touch. However, the decorative cap easily comes off the flat screw. In particular, this type of cap is often subjected to lateral force when cleaning sanitary ware, but when the decorative cap of the same name is subjected to such lateral force, it tends to shift laterally and easily come off.

[Means for Solving the Problems] The present invention relates to a wooden screw with a decorative cap in which the head of the wooden screw is covered with a decorative cap.

The wooden screw has a recessed hole in the center of its head.

The decorative cap has a substantially hemispherical shell shape, and includes a cap body in which the wooden screw head is accommodated in an inner cavity on the back side of the hemispherical shell, and a concave portion of the wooden screw head that protrudes from the back side of the cap body. an insertion part for connecting the wooden screw and the decorative cap that is fitted into the cap body; and a rib that is provided in the inner cavity of the cap body and that comes into contact with the side surface of the wooden screw head to prevent the decorative cap from slipping laterally. It has .

The cap body, insertion portion, and ribs are integrally molded from synthetic resin.

[Function] In the present invention, the entire decorative cap part is made integrally by resin molding, and the head of the wooden screw is provided with a recessed hole for inserting the insertion part that protrudes from the decorative cap. , the manufacturing process is simplified.

In the wooden screw with decorative cap of this invention,
The cap body of the cosmetic cap is in the shape of a hemispherical shell, and the inner hollow part on the back side of the cap body covers the head of the wooden screw so as to completely swallow the head of the wooden screw. Then, the insertion part protruding from the cap body fits into the recess of the wooden screw, and the rib provided in the inner cavity of the cap body comes into contact with the side surface of the head of the wooden screw, preventing the wooden screw from slipping laterally. prevent. In this way, in addition to the coupling between the insertion part and the recessed part, the fitting between the inner cavity part and the head of the wooden screw, and the engagement between the rib and the side surface of the head are superimposed, so that the decorative cap can be attached to the wooden screw. It becomes firmly attached to the head.

[Example] Hereinafter, a wooden screw with a decorative cap according to an example of the present invention will be described in detail.

1a, b and 2 show an embodiment of the present invention, in which a cylindrical insertion portion 2 corresponding to the countersunk screw in FIGS. 3 and 4 is integrated with a cap body 3 having a substantially hemispherical shell shape. The head 22 of the wooden screw 20 is molded with resin and has a recessed hole 21 into which the insertion portion 2 is inserted. A ring 4 is formed on the outer periphery of the insertion portion 2 so that the insertion portion 2 is firmly locked in the recessed hole 21, and an elastic force is provided to facilitate insertion and press the ring 4 against the wall surface of the recessed hole 21. A slit 5 is provided for the application. Furthermore, a rib 7 is provided in the inner cavity 8 of the cap body 3. The rib 7 is provided so that its leading edge comes into contact with the side surface of the head 22 of the wooden screw 20.

The decorative cap 1 with the above configuration is attached with a wooden screw 20.
2, insert the insertion part 2 of the cosmetic cap 1 into the recess 21 of the wooden screw 20 attached to the sanitary ware 23 etc. via the washer 24, and then insert the end of the cap body 3. Sanitary ware 2
Attachment is completed by pushing in with the eye that contacts the surface of 3.

In the fully installed state, the inner cavity 8 of the cap main body 3 swallows the head 22, and not only the top surface but also the side surface of the head 22 is avoided by the cap main body 3. Moreover, the ribs 7 come into contact with the side surfaces of the head 22 to prevent the cap body 3 from shifting laterally. In addition, the diameter of the insertion part 2 before insertion is the recessed hole 21.
It is larger than the inner diameter of. Therefore, the ring 4 is pressed against the inner wall surface of the recessed hole 21 by the elastic force generated by the slit 5. In this way, the insertion part 2 of the cosmetic cap 1 and the recessed hole 21 are engaged, the inner cavity part 8 and the head part 22 are fitted together, and the rib 7 and the head part 2 are engaged with each other.
Due to the overlapping contact with the side surfaces of the decorative caps 2 and 2, the decorative cap 1 becomes firmly attached to the wooden screw head 22, and will not come off under normal conditions.

Although four ribs are provided in the embodiment shown in FIGS. 1 and 2, the invention is not limited to this.

[Effects of the invention] As is clear from the above, the present invention eliminates the need for the conventional process of insert molding metal screws, and also eliminates the need to cut the heads of wooden screws, making production easier. It is possible to shorten the process, reduce the number of parts, and reduce costs. In addition,
In the present invention, the decorative cap is securely attached to the head of the wooden screw and will not come off.

[Brief explanation of the drawing]

Figures 1a and b are cross-sectional and bottom views of a cosmetic cap showing an embodiment of the present invention, Figure 2 is a front view of the embodiment of the present invention being worn, and Figures 3 and 4 are views of a conventional cosmetic cap. FIG. 3 is a sectional view showing first and second examples of wooden screws with decorative caps. 1... Cosmetic cap, 2... Insertion section, 3... Cap body, 4... Ring, 5... Slit, 7
...Rib, 8...Inner cavity, 20...Wood screw,
21... recessed hole, 22... head.

Claims (1)

[Scope of Claim for Utility Model Registration] A wooden screw with a decorative cap in which the head of the wooden screw is covered with a decorative cap, wherein the wooden screw has a recessed hole in the center of the head, and the decorative cap is approximately A cap body having a hemispherical shell shape and housing the wooden screw head in an inner cavity on the back side of the hemispherical shell, and a wooden screw head protruding from the back side of the cap body and fitting into the recess of the wooden screw head. It has: an insertion part for connecting the screw and the decorative cap; and a rib provided in the inner hollow part of the cap body and in contact with the side surface of the head of the wooden screw to prevent the decorative cap from slipping laterally; A wooden screw with a decorative cap, characterized in that the cap body, insertion portion, and rib are integrally molded from synthetic resin.