JPH0988932A - Synthetic resin-made loop clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin-made loop clutch by integral molding in which an installing body and a hook body are rotatably connected to each other and which can restrain swinging in the connecting direction. SOLUTION: In an installing body 1, a support lever 6 is installed on one end of a U-shaped frame body, and a window hole 7 is arranged in the support lever 6, and a recessed groove 8 is arranged in a top part of the window hole 7, and an inserting hole 10 is arranged in a bottom part 9, and a recessed groove 11 crossing the recessed groove 8 is continuously arranged in the inserting hole 10 on an outside surface of the bottom part 9. In a hook body 2, A neck part 15 which is fitted in the inserting hole 10 and has a head part 16 on the tip is arranged on a base board 12, and a projecting strip part 17 fittable in the recessed groove is arranged on a top surface of the head part 16, or a projecting strip part 18 which crosses the projecting strip part 17 and can be fitted in the recessed groove 11 is arranged on both sides of the neck part 15 on the base board 12, and the installing body 1 and the hook body 2 are integrally molded in a connected condition, and the installing body 1 or the hook body 2 is rotated in the different direction, and the projecting strip parts 17 and 18 are brought into contact with opposed surfaces, and swinging of both bodies is restrained.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a shoulder bag,
The present invention relates to a belt connector used for a shoulder bag or the like, and relates to a synthetic resin ring formed by molding a belt mounting body and a hook body by synthetic resin integral injection molding means.

[0002]

2. Description of the Related Art In a conventional ring made of synthetic resin, a belt mounting body and a hook body are integrally molded using synthetic resin as shown in FIG. A circular through hole is provided in a pair of protruding plate-shaped legs, while the hook body has a neck projecting upward, and a spherical head that is larger than the gap between the legs is provided at the tip of the neck. The ring is made of synthetic resin and has a size substantially equal to that of the through hole, and a neck portion is formed between the leg portions and a head portion can be inserted into the through hole. This ring is disclosed in Japanese Patent Publication No. 6-37887. Has been done.

Further, as shown in FIG. 10, a belt mounting body and a hook body are integrally molded using synthetic resin, and
A neck is projected at the center of the shaft installed on the belt attachment,
A base plate-shaped head is provided at the tip of the neck part, and a storage part having a lateral through hole is provided on the connection side of the hook body, and the top face of the storage part communicates with the through hole at a right angle to connect with the neck part. Japanese Unexamined Patent Publication (Kokai) No. 7-208440 discloses a ring formed by forming a notch groove having substantially the same width and connecting and molding the head with the through hole.

[0004]

In each of the known synthetic resin rings described in the preceding paragraph, the synthetic resin is integrally molded in a state where the mounting body and the hook body are connected to each other. There is a gap corresponding to the thickness of the side core at the connecting portion with the body. Therefore, since the attachment body and the hook body can be easily rotated during use and can be tilted, rattling occurs between the two bodies and the connection is unstable. Further, at this time, all the loads due to the rotation and the tilting are concentrated on the neck or the legs, so that there is a problem that the neck, which is weakest in terms of strength, is overloaded and the neck is damaged.

The present invention has been made in consideration of the above problems, and the invention according to claim 1 is a ring made of a synthetic resin, in which a mounting body and a hook body are connected, The molten synthetic resin is injected into a mold and integrally molded to manufacture a ring, and the side core gap that is always generated at the connecting portion between the mounting body and the hook body is rotated, while the hook body is rotated. This eliminates the gap, prevents the mounting body and the hook body from rotating and tilting during use, and suppresses the swinging of both bodies. Undoubtedly, the main purpose is to provide a tough ring made of a synthetic resin which can withstand long-term use in a stable connected state.

According to the second and third aspects of the present invention, in addition to the object of the first aspect of the invention, the form of the attachment body and the hook body in the eggplant ring is specified, and the connecting mechanism between the attachment body and the hook body is formed. It is an object to provide a ring having an advantageous form and capable of performing a strong connecting function.

In addition to the object of the invention described in claim 1, 2 or 3, the inventions according to claims 4, 5 and 6 specify the forms of the attachment body and the hook body in the eggplant ring to identify the attachment body and the hook body. Of course, the restraint mechanism for restraining the swinging between the mounting body and the hook body is an advantageous form in molding,
Moreover, it is an object of the invention to provide a ring made of synthetic resin which can sufficiently perform the rocking prevention function.

The invention according to claim 7 is based on claim 1,
In addition to the object of the invention described in 3, 4, 5 or 6, the combination form of the attachment body and the hook body, which allows the swinging suppression mechanism in the eggplant ring to effectively exhibit its function, is specified, and the composition capable of sufficiently performing the suppression function is synthesized. It is an object to provide a ring made of resin.

[0009]

In order to achieve the above object, the invention according to claim 1 of the present invention is a ring made of synthetic resin in which a mounting body 1 and a hook body 2 are rotatably connected. The connecting mechanism has a window hole 7 formed in one side thereof, which penetrates in the lateral direction, and an insertion hole 10 for inserting a neck portion having a small diameter is provided in one surface of the window hole 7, that is, a surface of the connection side. Is provided with an upright neck portion 15, a large-diameter head portion 16 is provided at the tip of the neck portion 15 to be fitted into the window hole 7, and the attachment body 1 and the hook body 2 are held in a coupled state. Resin is integrally molded. Further, the ring mainly made of synthetic resin is provided with a restraining mechanism for restraining the swinging in the connecting direction between the mounting body 1 and the hook body 2.

According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the mounting body 1 is formed in a U-shape, and the support rods 6 are provided between both ends thereof. A window hole 7 is provided in the center of the support rod 6, and a bottom portion 9 of the window rod 7, that is, a connection side with the hook body 2 is provided with an insertion hole 10 for inserting a neck portion continuously with the window hole 7, while the hook body 2 is A neck portion 15 for coupling with the mounting body 1 is provided on the upper surface of the substrate 12 so as to stand upright, and a head portion 16 is provided at the tip of the neck portion 15 to form a coupling mechanism. Further, the mounting body 1 and the hook body 2 are connected by integral molding of synthetic resin, and a ring made of synthetic resin provided with a restraining mechanism for suppressing rocking between the mounting body 1 and the hook.

According to a third aspect of the invention, in addition to the structure of the first aspect of the invention, the mounting body 1 is formed in a U-shape, and the support rods 6 are provided between both ends thereof. A neck portion 15 for connecting to the hook body 2 is provided upright in the center of the support rod 6, and a head portion 16 is provided at the tip of the neck portion 15, while the hook body 2 is provided with a window hole 7 on the upper surface of the substrate 12. Is provided in the lateral direction, and the insertion hole 10 for inserting the neck portion is continuously provided to the window hole 7 on the top surface of the storage portion 19, that is, the connection side, to form a connection mechanism, and the attachment body 1 and the hook. It is a ring made of synthetic resin, which is connected to the body by integral molding of synthetic resin, and is provided with a restraining mechanism for restraining rocking between the mounting body 1 and the hook body 2.

According to a fourth aspect of the present invention, in addition to the structure of the first, second or third aspect of the present invention, a restraint mechanism for restraining the swing of the attachment body 1 and the hook body 2 is provided with a window hole 7 and a neck portion 15. It is installed between the head 16 provided at the tip of the and the convex ridge portion 1 for rocking prevention is provided on the outer surface of either one of the attachment body 1 and the hook body 2.
7 is provided in a projecting manner, and a concave groove 8 corresponding to the projecting ridge portion 17 is provided in the other facing surface, and the whole is formed so as to be capable of swinging in the connecting direction while maintaining a constant gap. It is a ring made of synthetic resin in which the ridge portion 17 is formed so as to be able to come into contact with the facing surface.

According to a fifth aspect of the present invention, in addition to the configuration of the first, second or third aspect of the present invention, a restraint mechanism for restraining the swing of the attachment body 1 and the hook body 2 is provided at the bottom 9 of the window hole 7. And the bottom 9
Is installed between the plate surface protruding from the neck 15 facing the
A convex ridge portion 18 for rocking prevention is provided on the outer surface of one of the mounting body 1 and the hook body 2, and a concave groove 11 corresponding to the ridge portion 18 is provided on the other opposing surface. At the same time, it is a ring made of synthetic resin, the whole of which is formed so as to be able to swing in the connecting direction while maintaining a constant gap, and the ridge portion 18 can be brought into contact with the facing surface by the rotating operation.

According to a sixth aspect of the present invention, in addition to the structure of the first, second or third aspect of the present invention, a restraint mechanism for restraining the swing of the attachment body 1 and the hook body 2 is provided with a window hole 7 and a head portion. 16, and the ridge 17 provided on one of the attachment body 1 and the hook body 2 installed between both the bottom 9 of the window 7 and the substrate 12, and the ridge 18 provided on the other side. The ridges 17 and 18 are provided so as to project in an orthogonal state, and the ridges 17 and 18 are provided on the facing surfaces of the ridges 17 and 18, respectively.
The concave grooves 8 and 11 corresponding to the above are provided, and the whole is formed so as to be able to swing in the connecting direction while maintaining a constant gap, and the respective ridges 17 and 18 are brought into contact with the facing surface by the rotating operation. It is a synthetic resin ring made possible.

The invention according to claim 7 is the invention as defined in claims 1, 2 and
In addition to the constitution of the invention described in 3, 4, 5 or 6, the mounting body 1
A mode in which the restraint mechanism installed on the mount body 1 and the hook body 2 for restraining the swinging of the hook body 2 and the hook body 2 exerts a restraining action when the mount body 1 and the hook body 2 are pivotally arranged in an orthogonal manner. It is a ring made of synthetic resin formed in.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a ring made of a synthetic resin according to the present invention will be specifically described below with reference to the drawings.

As shown in FIG. 8, the ring made of the synthetic resin of the present invention is for attaching to a mounting body 1 for mounting a belt such as a shoulder belt and a stopper for a bag such as a shoulder bag. The hook body 2 and the attachment body 1 and the hook body 2 are molded by integral injection molding means using synthetic resins such as polyamide, polyacetal, polypropylene, and poly (ethylene terephthalate).

As shown in FIGS. 1 to 3, the mounting ring 1 is formed of a U-shaped frame as a whole.
A shaft hole 4 is provided in each of the leg portions 3 at both ends of the frame body, and a support rod 6 having a shaft portion 5 at an end portion is rotatably installed between the shaft holes 4. The support rod 6 is formed in a V-shape that is slightly outwardly bent at the center, and the bending point is formed in a thick portion protruding outward, and a window hole 7 penetrating in the transverse direction is provided in this portion. ing. The window hole 7 is provided with a concave groove 8 at the top and is formed in a convex shape as a whole, a small-diameter insertion hole 10 is vertically provided at the bottom portion 9 of the window hole 7, and the outer surface of the bottom portion 9 is provided with the window hole 7. Groove 8
A concave groove 11 for inserting a ridge portion is provided orthogonally to the concave groove 1.
1 is provided in the axial direction of the support rod 6 so as to communicate with the insertion hole 10. In addition, both ends of the support rod 6 may be fixedly mounted on the leg portion 3.

On the other hand, the hook body 2 is formed in such a manner that the hook 13 and the tongue piece 14 are juxtaposed in parallel on one surface of the substrate 12 and the tongue piece 14 elastically contacts the inner surface of the tip of the hook 13. Substrate 12
An upright neck portion 15 is projectingly provided at the center of the other surface, and a base plate-shaped head portion 16 is provided at the tip of the neck portion 15, and the top surface of the head portion 16 is fitted into the groove 8 of the window hole 7. The ridges 17 that can be formed project, and on both sides of the neck 15 that is erected on the upper surface of the substrate 12, ridges 18 that are orthogonal to the ridges 17 provided on the head 16 and that can be fitted into the groove 11 are provided. To project. The ridge portion 18 is provided so as to project in a direction corresponding to the installation direction of the hook 13.

The connecting mechanism for assembling the attachment body 1 and the hook body 2 has a window hole 7 provided in a support rod 6 mounted on the attachment body 1,
The head 1 of the neck 15 which is erected on the upper surface of the substrate 12 of the hook body 2.
6 is inserted, and the neck portion 15 is inserted into the insertion hole 10 to attach the mounting body 1.
And the hook body 2 are rotatably connected.

As shown in FIG. 4, the molding of the connecting mechanism between the mounting body 1 and the hook body 2 is performed by arranging the side cores C ₁ and C ₂ in the split main mold D in a stepwise orthogonal state. To form an injection mold. The side core C ₁ includes the window hole 7 and the concave groove 8 of the support rod 6, a part of the upper side of the insertion hole 10, a part of the upper side of the neck portion 15 standing on the upper surface of the substrate 12 at the same time, and the head portion 1.
6 and the ridge portion 17 are arranged such that they can be formed with a constant gap. Further, the side cores C ₂ are arranged so as to be orthogonal to the cores C ₁ and to be connected in a stepped manner, and are provided so as to project on a part of the lower side of the neck portion 15 standing on the upper surface of the substrate 12 and on both sides of the neck portion 15. The convex ridge portion 18 and the concave groove 11 on the outer surface of the bottom portion 9 of the support rod 6 are arranged so as to be moldable with a constant gap, and the molten synthetic resin is injected into this combined mold for integral molding. As a result, a ring formed by assembling the attachment body 1 and the hook body 2 rotatably connected to each other is molded at once.

The formed ring is swingable in the connecting direction between the attachment body 1 and the hook body 2 at a constant interval, and the hook body 2 is attached to the attachment body 1 as shown in FIG. When it is rotated 90 degrees, the protrusion 17 on the upper surface of the head 16 provided as a restraint mechanism for rocking abuts on the top of the window hole 7, and the protrusion 18 provided on the upper surface of the substrate 12 causes the window to move. Since it contacts the outer surface of the bottom 9 of the hole 7, the mounting body 1 and the hook body 2
And are prevented from swinging in the connecting direction.

As shown in FIG. 8, the usage of the eggplant ring is such that the attachment body 1 is inserted into one end of the shoulder belt B, and the hook body 2 is attached to the stopper F such as a triangular link attached to a bag or the like.
Hook the hook 13 of. At this time, the mounting body 1 and the hook body 2
The ridges 17 of the head portion 16 and the ridge portions 18 on the substrate 12 are brought into contact with the respective opposing surfaces for use.

Next, in the ring shown in FIG. 5, a groove 11 is provided on the outer surface of the bottom 9 of the window 7 of the support rod 6 of the mounting body 1 to support the rod 6.
The ridge 1 which is recessed in the axial direction of the hook body 2 and can be fitted into the groove 11 in the same direction as the hook 13 on the upper surface of the base 12 of the hook body 2.
Project 8 However, in this embodiment, the top surface of the window hole 7 is flat, and the top surface of the head 16 of the neck portion 15 standing on the upper surface of the base plate 12 of the hook body 2 is also formed flat, so that the mounting body 1 and the hook body 2 are The restraining mechanism for restraining the rocking is disposed on the central bottom portion 9 of the support rod 6 and the upper surface of the substrate 12, and the restraining action is that the bottom portion 9 of the window hole 7 is sandwiched between the head portion 16 and the protruding portion 18. To do.

In the ring shown in FIG. 6, a window hole 7 provided in a penetrating shape at the center of the support rod 6 in the mounting body 1 has a groove 8 on the top surface.
Is provided on the outer surface of the bottom portion 9 so as to be orthogonal to the concave groove 8.
1 is provided, and the hook body 2 is provided with a ridge portion 17 that can be fitted into the groove 8 on the upper surface of the head 16 of the neck portion 15 that is erected on the upper surface of the substrate 12. However, in this form the substrate 1
The periphery of the neck portion 15 erected on 2 is formed flat, and the restraining mechanism for restraining the swinging of the attachment body 1 and the hook body 2 is provided on the top surface of the window 7 of the support rod 6 and the top surface of the head portion 16. The disposition effect is provided by bringing the top surface of the window hole 7 and the ridge portion 17 into contact with each other so that the lower surface of the head portion 16 is pressed against the bottom portion 9.

The formed ring shown in FIG. 7 is a support rod 6 of the mounting body 1.
A neck 15 is erected on the outer surface of the center of the head, and a head 16 is provided at the tip of the neck 15 and ridges 18 are provided on both sides of the neck 15.
On the other hand, the window hole 7 is formed in the hook 1 on the upper surface of the substrate 12 of the hook body 2.
An accommodating portion 19 that is provided transversely to the three directions is integrally provided, and an insertion hole 1 for inserting the neck portion 15 on the upper surface of the accommodating portion 19.
0 is provided so as to communicate with the window hole 7, and a concave groove 11 for fitting the convex strip portion 18 in the same direction as the hook 13 is provided. The restraint mechanism for restraining the swinging of the attachment body 1 and the hook body 2 is arranged on the outer center surface of the support rod 6 and the upper surface of the storage portion 19, and the restraining action is achieved by rotating the hook body 2.
This is performed by holding the storage portion 19 of the hook body 2 between the ridge portion 18 provided on the support rod 6 and the head portion 16. The head 1 of the neck 15
Of course, it is also possible to provide a convex stripe portion on 6 and a concave groove on the bottom surface of the window hole 7 to form both of these bodies in a form that can be fitted and removed.

[0027]

The ring made of the synthetic resin of the present invention has the structure as described above, and the structure has the following effects.

In the invention according to claim 1 of the present invention, the connecting mechanism of the mounting body and the hook body has a window hole, one of which penetrates in the lateral direction, and the insertion hole for inserting the neck portion is formed on one surface of the window hole. Since the other is provided with a neck portion and the neck portion is provided with a head portion at the tip thereof to be fitted into the window hole, there is an advantage that the connection structure is extremely simple and the connection can be strong. Furthermore, since a rocking suppression mechanism is provided between the attachment body and the hook body, the attachment body and the hook body do not rattle during use, and the connecting portion does not burden the ring. There is an effect that can be finished.

According to a second aspect of the invention, in addition to the effect of the first aspect of the invention, the mounting body has a window hole at the center of the support rod.
Since the insertion hole is continuously provided at the bottom of the window hole, the hook body has the neck portion protruding from the substrate, and the head portion is provided at the tip of the neck portion for connection, the connection structure is simple and suitable for synthetic resin integral molding means. In addition, it has the effect that it can be finished into a strong coupling mechanism.

According to a third aspect of the present invention, in addition to the effect of the first aspect of the invention, the mounting body has a neck portion projecting from the center of the supporting rod, the head portion is provided at the tip of the neck portion, and the hook body is provided on the substrate. A storage part is provided through the window hole, and the insertion hole is connected to the top surface of the storage part to connect them, so the connection structure is simple and suitable for synthetic resin integrally molding means There is an effect that can be finished into a mechanism.

According to a fourth aspect of the present invention, in addition to the effect of the first, second or third aspect of the present invention, a swing suppressing mechanism for the attachment body and the hook body is installed between the window hole and the head. , The projection is formed on one side and the grooves are formed on the other with a certain gap so that both bodies are swingable, and the projection makes contact with the facing surface by the rotating operation. There is an effect that the operation of attaching the ring can be easily performed, and the rocking suppressing function can be achieved by a simple turning operation.

According to a fifth aspect of the present invention, in addition to the effect of the first, second or third aspect of the present invention, the mechanism for suppressing the swing between the attachment body and the hook body has a bottom portion of the window hole and a standing surface of the neck portion. It is installed between the ridge and the ridge, the ridge is projected on one side, and the groove is formed on the other side with a certain gap so that both bodies can be rocked. Since it is abutted against, the operation of attaching the egg ring can be easily performed, and the suppressing mechanism can be installed in a large size in a wide range. Therefore, there is an effect that a powerful swing suppressing function can be achieved by a simple rotating operation.

According to a sixth aspect of the present invention, in addition to the effect of the first, second or third aspect of the present invention, the swing suppressing mechanism for the attachment body and the hook body has a window hole, a head portion, and a bottom portion of the window hole. It is installed in two places, a ridge and a substrate, and one ridge and the other ridge protrude in an orthogonal shape, and a concave groove is formed in the opposing surface of each ridge with a constant gap. Since both bodies are formed so as to be swingable, and the convex strips come into contact with the facing surfaces by the pivoting motion, the operation of attaching the formed ring can be performed easily, and the restraining mechanism is installed at two places. Therefore, there is an effect that a strong and powerful rocking prevention function can be achieved by a simple turning operation.

[0034] The invention described in claim 7 is based on claims 1, 2,
In addition to the effect of the invention described in 3, 4, 5 or 6, since the rocking suppressing mechanism of the attachment body and the hook body is configured to act as a deterrent when both bodies intersect in an orthogonal state, The effect of the present invention is extremely remarkable, for example, it has an effect that the deterrent function works only in an ideal use state and that a ring made of a synthetic resin having a good appearance can be finished.

[Brief description of drawings]

FIG. 1 is a front view of a synthetic resin ring.

FIG. 2 is a side view in which a part of the ring of the eggplant is cut away.

FIG. 3 is a front view showing a connection main part of the ring formed in the above.

FIG. 4 is a cross-sectional view showing a molding state of a main connecting portion in the ring formed above.

FIG. 5 is a front view of a ring forming a modified example of the coupling mechanism.

FIG. 6 is a front view of a ring forming a second modification of the connecting mechanism.

FIG. 7 is a front view of a ring forming a third modification of the connecting mechanism.

FIG. 8 is a front view showing a usage state of the eggplant ring.

FIG. 9 is a front view of a known eggplant.

FIG. 10 is a front view of another known ring.

[Explanation of symbols]

 1 Mounting Body 2 Hook Body 6 Support Rod 7 Window Holes 8 and 11 Recessed Groove 9 Bottom 10 Insertion Hole 12 Substrate 15 Neck 16 Head 17 and 18 Convex Strip 19 Storage

Claims (7)

[Claims] 1. A ring made of synthetic resin in which a mounting body (1) and a hook body (2) are rotatably coupled to each other. The coupling mechanism has a window hole (7), one of which is pierced in a lateral direction. An insertion hole 10 for inserting a small-diameter neck portion is provided, a neck portion 15 is provided on the other side, and a large-diameter head portion 16 is provided at the tip of the insertion portion 10 to be fitted into the window hole 7, and the attachment body 1 and the hook body 2 are formed. Is integrally formed in a connected state, and a suppressing mechanism for suppressing swinging in the connecting direction is provided between the mounting body 1 and the hook body 2. 2. The mounting body 1 is formed in a U shape, a supporting rod 6 is provided at the tip thereof, and a window hole 7 is provided in the center of the supporting rod 6.
An insertion hole 10 is continuously provided on the bottom portion 9 of the window hole 7, the hook body 2 has a neck portion 15 projectingly provided on the substrate 12, and the head portion 1 is provided at the tip of the neck portion 15.
6. The composition according to claim 1, wherein 6 is provided to form a coupling mechanism, the attachment body 1 and the hook body 2 are coupled by integral molding, and a restraining mechanism is provided between the attachment body 1 and the hook body 2. Resin ring. 3. The mounting body (1) is formed in a U-shape, a supporting rod (6) is installed at an end thereof, a neck portion (15) is provided at the center of the supporting rod (6), and a head portion (16) is provided at the tip of the neck portion (15). The hook body 2 is provided with an accommodating portion 19 equipped with the window hole 7 on the upper surface of the substrate 12, and the insertion hole 10 is continuously provided on the top surface of the accommodating portion 19 to form a connecting mechanism. The synthetic resin ring according to claim 1, further comprising a restraining mechanism provided between the mounting body 1 and the hook body 2 while connecting the two by integral molding. 4. The restraint mechanism is installed between the window hole 7 and a head portion 16 provided at the tip of the neck portion 15, a convex ridge portion 17 is provided on one outer surface of the restraint mechanism, and the other is opposed thereto. A concave groove 8 is formed in the surface with a constant gap so as to be swingable in the connecting direction, and the ridge portion 17 is formed so as to be able to abut against the opposing surface by a rotating operation. Or a ring made of the synthetic resin described in 3. 5. The suppressing mechanism includes a bottom portion 9 of the window hole 7 and a bottom portion 9 of the window hole 7.
Is installed between the plate surface protruding from the neck 15 facing the
One outer surface is provided with a protruding ridge portion 18, and the other opposing surface is provided with a recessed groove 11 with a constant gap so as to be swingable in the connecting direction and to be protruded by a rotating operation. The strip | belt part 18 is formed so that a contact surface can be contact | abutted, 1 or 2 or 3.
A ring made of the synthetic resin described. 6. The restraining mechanism is installed between both the window hole 7 and the head portion 16, and between the bottom portion 9 of the window hole 7 and the substrate 12, and the one protruding portion 17 and the other protruding portion 18 are provided. Project orthogonally,
Grooves 8 and 11 are provided in the opposing surfaces of the respective ridges 17 and 18 with a constant gap so as to be swingable in the connecting direction, and the ridges 17 and 18 are rotated by a rotating operation.
The synthetic resin ring according to claim 1, 2 or 3, wherein the ring is formed so as to be capable of contacting the facing surface. 7. The restraint mechanism is formed in a form capable of restraining action when the attachment body 1 and the hook body 2 are pivotally arranged in an orthogonal manner. A ring made of the synthetic resin according to 6.