JP2009092151A - Ring body provided with a lock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ring body which is constituted more rationally. <P>SOLUTION: A hook 200 is provided at the end of the ring body at one side, and the tip of the hook 200 is formed by being molded in a tapered form. A cylindrical part 300 is formed at the end of the ring body at the other side, and the hook is inserted therein. Furthermore, a lock mechanism 400 used for hooking the hook is provided in the cylindrical part 300 which is provided with a first cylindrical member 310 and a second cylindrical member 320. The first cylindrical member 310 is fixed to the end at the other side, and the second cylindrical member 320 is fixed to the first cylindrical member. The hook is inserted from an end opening 320a of the second cylindrical member 320. The lock mechanism is constituted by providing a ring member 410 between the first cylindrical member and the second cylindrical member so that it can move and by providing an elastic body 420 which energizes the ring member by directing it toward the inner wall surface of the cylindrical part. The hook is inserted to the ring member 410. When the hook is inserted to the cylindrical part, the elastic body is elastically deformed, and the ring member moves. When the hook passes through the ring member, the hook is hooked by the push-back of the ring member by the elastic body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ring body assembled in an annular shape.

Generally, a ring body having a lock mechanism used as a stopper is known. Patent Documents 1 and 2 disclose this type of ring body.
JP 2003-219956 A JP 2004-360432 A

  Now, the ring bodies disclosed in these documents have a function that, once assembled in an annular shape, usually cannot be opened unless they are broken. Therefore, the reliability of the lock mechanism is regarded as important, and with respect to the structure of the ring body, further contrivance is required in order to achieve ease of manufacture and ensure the reliability of the lock mechanism. This invention is made | formed in view of this situation, The objective is to provide the ring body comprised more rationally.

  The invention described in claim 1 of the present application is a ring body that is partially opened, and is provided with a hook formed by tapering the tip of one end of the ring body, and A cylindrical portion for inserting the hook is provided at the other end of the ring body, and further, a locking mechanism for locking the hook is provided inside the cylindrical portion. A first cylindrical member fixed to the end of the first cylindrical member, and a second cylindrical member fixed to the first cylindrical member and into which the hook is inserted from the end opening, and the locking mechanism includes the first cylindrical member And an elastic body that urges the ring member toward the inner wall surface of the cylindrical portion and is provided between the second cylindrical member and the second cylindrical member. When the hook is inserted into The elastic body is moved said ring member while elastically deformed, when the hook passes through the ring member, said hook by the elastic body pushes back the ring member is a ring member of the locked configurations.

  According to the present invention, a more rationally configured ring body can be obtained.

  Embodiments of the present invention will be described below with reference to the drawings. The ring body 1 of this example shown in FIGS. 1 to 4 is a part that is opened and is assembled in an annular shape. Once assembled in an annular shape, it usually cannot be opened until it is destroyed. The main body of the ring body 1 is configured by plastically deforming a metal wire into a predetermined shape.

  As shown in these drawings, a hook 200 having a tapered tip is provided at one end of the ring body 1, and the hook 200 is inserted into the other end of the ring body 1. A cylindrical portion 300 is provided, and a lock mechanism 400 that locks the hook 200 is provided inside the cylindrical portion 300.

  The cylindrical part 300 includes a first cylindrical member 310 fixed to the other end of the ring body 1 and a second cylindrical member fixed to the first cylindrical member 310 and into which the hook 200 is inserted from the end opening 320a. 320. The first cylindrical member 310 and the second cylindrical member 320 are provided with a male screw portion 311 on one outer periphery thereof, and provided with a female screw portion 321 on the other outer periphery thereof, and screwing the male screw portion 311 and the female screw portion. It is fixed by.

  The lock mechanism 400 movably provides a ring member 410 through which the hook 200 is inserted between the first cylindrical member 310 and the second cylindrical member 320 and urges the ring member 410 toward the inner wall surface of the cylindrical portion 300. The elastic body 420 is provided. The ring member 410 is a member whose inner diameter is slightly larger than the maximum diameter of the cross section of the hook 200. Alternatively, it may be an elastically deformable C-shaped ring. The moving direction of the ring member 410 is perpendicular to the insertion direction of the hook 200. The elastic body 420 is a rubber lump interposed between the ring member 410 and the inner wall surface of the cylindrical portion 300. In addition, as the elastic body 420, a spring or a leaf | plate spring is also employable. Moreover, the ring member 410 and the elastic body 420 can also be integrally formed in terms of reducing the number of parts.

  In the first cylindrical member 310 and the second cylindrical member 320, a ring member 410 and an elastic body 420 are disposed inside a member provided with a female screw portion 321 (second cylindrical member 320 in the illustrated example), and a male screw portion 311 is provided therein. A member (first cylindrical member 310 in the illustrated example) is assembled by screwing. The first cylindrical member 310 and the second cylindrical member 320 are configured such that a space for accommodating the ring member 410 and the elastic body 420 is formed between them.

  The first cylindrical member 310 is fixed to the other end of the ring body 1 after the first cylindrical member 310 and the second cylindrical member 320 are assembled. The other end of the ring body 1 and the first cylindrical member 310 are fixed by screwing, bonding, or welding. In the illustrated example, the other end of the ring body 1 to which an adhesive is applied is screwed into the first cylindrical member 310 and fixed.

  When the hook 200 is inserted into the cylindrical portion 300, the ring member 410 moves while the elastic body 420 is elastically deformed. When the hook 200 passes through the ring member 410, the elastic body 420 pushes back the ring member 410, and the hook 200 is locked. That is, the hook 200 is in a state of being prevented from coming off when the ring member 410 abuts.

  The ring body 1 is once assembled in an annular shape and cannot be opened unless it is destroyed. Therefore, the lock mechanism 400 for locking the hook 200 may be inspected in advance as shown in FIG. 5 before the first cylindrical member 310 is fixed to the other end of the ring body 1 in the manufacturing stage. . In other words, the rod-shaped inspection body A provided with the hook 200 at the tip is inserted from the end opening 320a (in the arrow direction in FIG. 5A), and the hook 200 is locked by the lock mechanism 400. Here, it is confirmed that the lock mechanism 400 functions normally by pulling the test body A in the anti-insertion direction (the arrow direction in FIG. 5B). When the hook 200 comes off from the cylindrical portion 300, the cylindrical portion 300 is defective. After the confirmation, the inspection object A is pulled from the side opposite to the end opening 320a (in the direction of the arrow in FIG. 5C). The main part of the inspection object A is formed in a tapered shape so that it can be pulled out smoothly. This inspection method is very effective in improving the yield rate of products.

  According to the configuration of this example, a more rationally configured ring body can be obtained. That is, the ring body of this example is provided with a highly reliable locking mechanism including a ring member and an elastic body, and constitutes a cylindrical portion that houses the locking mechanism by the first cylindrical member and the second cylindrical member. By doing so, the manufacture is facilitated. In addition, it is needless to say that the configuration of each part in the present example can be appropriately changed in design within the technical scope described in the claims, and is not limited to that illustrated in the drawings. For example, the first cylindrical member and the second cylindrical member are configured to be screwed and assembled in this example, but may be configured to be press-fitted and assembled.

  The ring body of the present invention can be suitably used as, for example, a component part of a key holder. It can also be used as a key ring for sealing a bag or locker.

It is a front view which concerns on the Example of this invention and shows a ring body. It is sectional drawing which concerns on the Example of this invention and shows a hook and a cylindrical part. (A) is an exploded sectional view showing a hook and a cylindrical part, and (b) is an XX arrow sectional view of (a) concerning an example of the present invention. It is an exploded sectional view showing a cylinder part concerning an example of the present invention. It is explanatory drawing of the inspection method of a cylindrical part concerning the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ring body 200 Hook 300 Cylindrical part 310 1st cylindrical member 311 Male thread part 320 2nd cylindrical member 320a End part opening 321 Female thread part 400 Lock mechanism 410 Ring member 420 Elastic body A Test body

Claims (1)

A ring body that is partially open, and a hook formed by tapering the tip of the ring body is provided at one end of the ring body, and the hook is formed at the other end of the ring body. In the ring body provided with a locking mechanism for locking the hook inside the cylindrical portion,
The cylindrical portion includes a first cylindrical member fixed to the other end, and a second cylindrical member fixed to the first cylindrical member and into which the hook is inserted from the end opening.
The lock mechanism movably provides a ring member that passes through the hook between the first cylindrical member and the second cylindrical member, and biases the ring member toward the inner wall surface of the cylindrical portion. An elastic body,
When the hook is inserted into the cylindrical part, the ring member moves while the elastic body is elastically deformed. When the hook passes through the ring member, the elastic body pushes the ring member back to engage the hook. Ring body characterized by being stopped.

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