JPH0417048Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention relates to retractable rings, and eliminates the need for ring size adjustment, which was a major constraint in reducing the cost of conventional rings, and allows the body of the accessory to rotate. By making it possible to expand and contract the ring to the desired size with just a single touch, a ring with a design that the customer likes can be delivered immediately.

[Conventional technology]

A typical conventional telescopic ring of this type is one in which a cylindrical body is formed at both ends of the accessory body, and both ends of the ring-shaped member are inserted into the cylindrical body so that the insertion depth can be adjusted. It is true.

Also, Utility Model Publication No. 13188 and Utility Model Publication No. 54-
Publication No. 151683 describes a ring in which an accessory main body and a ring-shaped member are connected with a screw so that the size can be easily changed by mutually rotating them.

[Problem that the invention seeks to solve]

However, in the former type of retractable ring, the cylindrical body has a larger diameter than the ring-shaped member, and the difference in height gives discomfort to the fingers when worn, and the design is extremely unsightly.

Regarding the latter ring, the one disclosed in Utility Model Publication No. 26-13188 has a male thread formed at the open end of the ring-shaped member and is fitted into a female thread formed on the accessory body. If the diameter of the member is not approximately the same as the diameter of the male screw, the connecting portion with the accessory body will become unnatural, which has the drawback of placing restrictions on the thickness and design of the ring-shaped member. In any case, no consideration is given to the decorativeness of the connecting portions.

Furthermore, in the device disclosed in Japanese Utility Model Application Publication No. 54-151683, the ring-shaped member itself is flexible and is rotated, so it cannot be used as a normal ring, although it may be used as a toy. . Therefore, it is not considered to be a subject of comparison. As a reminder, the lack of consideration for decorativeness in the connecting part between the ring-shaped member and the accessory body is that
This method has the same drawbacks as the device described in Publication No. 13188.

The retractable ring of this invention was created in order to eliminate the above-mentioned drawbacks of the conventional example, and by forming the accessory body to be freely rotatable, it can be easily changed to the desired size. This was developed with the aim of providing a retractable ring with enhanced decorativeness at the connecting part.

[Means to solve the problem]

That is, the retractable ring of this invention has a pair of mutually opposing through holes protruding from the side wall of the accessory body,
A pair of screws with threads facing in opposite directions, which are fixed to both ends of a substantially ring-shaped member having an open end in the through hole, are respectively screwed together to form the accessory main body rotatably, and the ring A hollow portion is formed at each open end of the ring-shaped member, a coil spring is inserted into the hollow portion, and a long hole is provided protruding from the peripheral wall of the hollow portion along the length direction of the ring-shaped member, A lever protruding from the inner wall of the decorative member is fitted into this elongated hole, and the decorative member is normally biased toward the accessory body via the lever by the coil spring.

〔Example〕

Next, one embodiment of the retractable ring according to this invention will be explained based on the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes an accessory main body to which jewelry can be attached, which has a hollow portion inside and has a substantially cylindrical shape. 3,
Reference numeral 3' designates a pair of through-holes projecting from the side wall of the accessory main body 1 and facing each other. 2 is the open end 6, 6'
It is a ring-shaped member made of precious metal. A pair of screws 4, 4' with threads facing in opposite directions are fixed to the tips of the open ends 6, 6', and these reverse screws 4, 4' are connected to the through holes 3, 6'.
3' and are screwed into each other. With this structure, when the accessory body 1 is rotated in one direction, the reverse screws 4, 4' advance inward, and when the accessory body 1 is rotated in the opposite direction, they advance outward. Therefore, the ring-shaped member 2 becomes expandable and contractible by this operation, and can be immediately adjusted to a desired size.
It is desirable to adjust the pitch of the reverse screws 4, 4' so that the accessory body 1 expands and contracts, for example, by one size every time the accessory body 1 rotates once.

Further, the open ends 6, 6' have hollow parts 7, 7' at their tips, and the coil springs 5, 7' are inside the hollow parts 7, 7'.
5' are inserted into each other. Further, elongated holes 9, 9' are bored in the outer walls of the hollow portions 7, 7' along the length direction of the ring. In the figure,
Reference numerals 8 and 8' denote decorative members that are approximately rectangular and have curved surfaces along the outer periphery of the ring-shaped member 2. These decorative members 8 and 8' have levers 10 and 10' on their inner walls. , 10' are the long holes 9,
It is inserted into the hollow parts 7, 7' from 9', and its tips abut the tips of the coil springs 5, 5, so that the whole body is normally biased in one direction of the accessory body. In this way, the decorative members 8, 8' cover the connecting portion between the accessory main body 1 and the ring-shaped member 2 so that they cannot be seen. Therefore, even if the accessory main body 1 rotates, the gap between the accessory main body 1 and the ring-shaped member 2 is not visible from the outside.

[Effect of idea]

Since the retractable ring according to this invention is constructed as described above, it does not require any special processing to match the size of the ring, and has the effect of providing a ring that perfectly fits anyone, anytime, anywhere. .

Furthermore, even when the accessory body rotates, the gap between the accessory body and the ring-shaped member is not visible from the outside, and the ends of the ring-shaped member are designed to pinch the accessory body, allowing the accessory body to be held in the correct position. can be retained.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a retractable ring according to this invention, FIG. 2 is a plan view, and FIG. 3 is an exploded perspective view. 1...Accessories main body, 2...Ring-shaped member, 3,
3'...through hole, 4,4'...reverse thread, 5,5'...
...Coil spring, 6,6'...Open end, 7,7'...
...Hollow part, 8, 8'... Decorative member, 9, 9'...
Long hole, 10, 10'...Lever.

Claims (1)

[Scope of utility model registration request] A pair of mutually opposing through holes are protruded from the side wall of the accessory body, and a pair of screws with threads facing in opposite directions are fixed to both ends of a substantially ring-shaped member having an open end in the through holes. They are screwed together to form the accessory body rotatably, and a hollow part is formed at each open end of the ring-shaped member, a coil spring is fitted into the hollow part, and a peripheral wall of the hollow part is inserted. A long hole is bored along the length of the ring-shaped member, a lever protruding from the inner wall of the decorative member is fitted into the long hole, and the coil spring normally moves the decorative member toward the jewelry body via the lever. A telescopic ring characterized by being biased.