JPH0211242B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use Tie pins with high-quality jewelry attached, etc., which prevent the pins from falling out when inserted into the socket when using studs, earrings, etc. This invention relates to

Technical background: With the structure of conventional tie pins, they easily fall off.
However, the expensive jeweled part was lost along with the pin, and only the insertion bracket remained along with the chain.

The reason for this is that the mechanical and physical structure functions at first, but as the wearer is repeatedly attached and detached, twisting and rotation (rotation of the pin axis) occur, and as a result of wear, the function gradually deteriorates. It becomes dull, and furthermore, dust and the like get inside the pin receiving part and gradually become easy to come out.

For this reason, some items such as earrings and badges have a hole and a ring at the tip of the pin to prevent the pin from being screwed back and falling out after cutting a screw and engaging a nut, but these are not attachable or detachable. It's not easy.

In cases like this, it is undeniable that the majority of people who have experience in owning tie pins have lost them due to falling out, and as a result, those with experience have very little desire to purchase expensive tie pins. However, the more expensive the products, the more they are avoided, which in turn has a negative impact on the sellers.

Conventional technology The invention of a tie-tack-type tie clip in which the inserted pin is clamped and fixed by a ball inserted into a tapered recess in an insert-receiving metal fitting that securely holds the pin was published as a utility model application in 1982-107010.
In addition, a device in which the outer periphery of the pin to be inserted is provided with unevenness is disclosed in Publication of Utility Model Application No. 1982-6909.

Problems to be Solved by the Invention Although the former technique disclosed above has a structure in which the inserted pin is clamped and fixed, it has a structure in which the outer periphery of the pin is simply forcefully connected with a ball, and there is no need to pull it out other than by bonding pressure. It has the disadvantage that it can be pulled out without difficulty if pressure is applied, and although the latter disclosed technology is perfect as a structure to prevent natural removal, it has the disadvantage of a complicated structure and troublesome handling. It was hot. In contrast, the present invention was developed with the aim of preventing the pin from being pulled out unless the pin itself rotates continuously without any operation during installation.

Means for Solving the Problems The present invention provides two balls that roll in contact with a tapered surface of an inner wall, and are sequentially inserted as the balls move to a small diameter portion of the tapered surface. For tie pins that are designed to firmly fix the outer circumference of the pin, when the pin is completely inserted into the pin hole, the outer circumference in the distal direction excluding the tip of the needle from the position where the installed ball is to be brought into contact is A spiral groove is recessed, and a plurality of balls to be engaged with the spiral groove are engaged and inserted into a hole of a piston pipe drilled in accordance with the shape of the spiral groove, and the balls are inserted into the hole of the piston pipe to form a male thread of the spiral groove. This invention is capable of producing a female thread action corresponding to the above.

Action Hold the fixed seat of the pin with the jewel and insert the pin into the tie, while holding the flange of the piston pipe of the insertion fitting, pull out the piston pipe as far as it will go from the taper pipe and position the ball in the large diameter part of the taper hole. Then, when the pin is deeply inserted into the center hole of the tapered pipe, the ball is located in the large diameter part of the taper hole, so as the pin is inserted, the ball moves outward inside the hole, making it easier to remove the pin. accept. After that, when the piston pipe is released, the piston pipe is pulled back into the taper pipe by the spring, and then when the piston pipe is rotated several times in the direction of screwing while holding the fixed seat, the ball moves in the direction of the small diameter part of the taper hole due to the spiral groove. Since it engages in the spiral groove closest to the fixed seat, there is no need for it to fall out after that.

To remove it, hold the fixed seat and rotate in the opposite direction to the above, and when the ball enters the spiral groove at the tip end of the pin, hold the fixed seat and push the pin into the tapered pipe and pull out the piston pipe at the same time. The pin comes out for the first time.

Even if the pin naturally rotates and loosens during use, even if the ball is located in the spiral groove at the tip end, the ball will be locked under narrow pressure in the small diameter part at the front of the tapered hole, and the jewel part will not be pulled even if pushed. It will never come out unless you push the pin into the taper pipe and pull out the piston pipe at the same time.

Embodiment A pin hole 3 is drilled in the center of the piston pipe 2, which has a small diameter part 1 formed by cutting the middle part of the outer periphery to a small diameter, and a circular flange is formed on the outer periphery of the front end of the large diameter part 4 at the rear. holes 8, 8' for balls 7, 7' are bored in the middle of the large diameter part 6 of the part in the diametrical direction relative to the pin hole 3;
The holes 8, 8' are drilled so as to leave a dish-shaped pawl 9 slightly on the inner periphery before penetrating into the pin hole 3.

A coil spring 10 is wound around the small diameter portion 1,
Balls 7, 7' are inserted into holes 8, 8'.

A tapered hole 12 is bored in the pipe 11 which has a larger diameter than the piston pipe 2 and whose front end is closed, with the front end having the large diameter part 6 at the front end of the piston pipe 2 as the front end diameter, and which becomes larger in diameter toward the rear. pin hole 14
to form a tapered pipe 15, and a circular collar 16 is provided near the front end of the tapered pipe 15.
A piston pipe 2 having balls 7, 7' and a coil spring 10 is inserted into the taper hole 12, and the rear end of the taper pipe 15 is appropriately closed (for example, the rear end of the taper pipe 15 is closed) so that the piston pipe 2 does not come off. The insertion fitting A is formed by making the end part thinner and closing it by squeezing it inward by squeezing it, or by screwing together a separately formed closing plate. Of course, this allows the piston pipe 2 to slide back and forth.

Separately from this, a piston 17 is formed with a diameter that allows it to go in and out in close contact with the pin holes 3 and 14, one end of the pin 17 is tapered to form a needle point 21, and a fixing seat 19 for a jewel 18 is provided at the other end. The jewel 18 is fixed to the fixed seat 19 with a claw 20.

In the middle of the pin 17, when the pin 17 is inserted into the taper pipe 15 and the piston pipe 2 at its deepest point, the piston pipe 2 is of course connected to the taper pipe 15.
1 to several pitches (for example, 3 pitches) closer to the needle tip 21 of the pin 17 than where the balls 7, 7' are located when they are pushed in the deepest position by the spring 10.
A spiral groove 22 is formed in advance.

Therefore, the holes 8, 8' and the balls 7, 7' are in the spiral groove 2.
2, the center positions are shifted.

Effects of the Invention Since the ball is fitted into the spiral groove, even if it loosens, the ball is tightly locked in the last groove at the top of the tapered hole, so it will not come off even if you push or pull the fixed seat, and the piston pipe will be pinned. It will never fall out unless you press and pull it out at the same time, so you can safely use it on tie pins, badges, earrings, etc. with high quality jewelry.

[Brief explanation of drawings]

FIG. 1 is an overall sectional view, FIG. 2 is an enlarged sectional view of a main part, FIG. 3 is a sectional view along the same line, and FIG. 4 is a sectional view in a relaxed state. 2... Piston pipe, 7,7'... Ball,
8, 8'...hole, 14...pin hole, 17...pin,
21... Needle tip portion, 22... Spiral groove.

Claims (1)

[Claims] 1. With two balls rolling in contact with the tapered surface of the inner wall, as the balls move to the small diameter part of the tapered surface, the tie pin is fixed with strong pressure on the outer periphery of the successively inserted pins, so that the pins are completely inserted into the pin holes. When the ball is inserted into the needle, a spiral groove is formed on the outer periphery of the tip excluding the tip of the needle from the position where the installed ball is to come into contact, and a plurality of balls to be engaged with the spiral groove are inserted into the needle. The ball is configured to be engaged and inserted into a hole of a piston pipe drilled in accordance with the form of a spiral groove, so that the ball can exhibit a female thread action corresponding to the male thread action of the spiral groove. A device to prevent tie pins, etc. containing high-quality jewelry from falling off.