JPH0531931Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a snap hook that can be used as a part to hang a shoulder strap, belt, etc. to a shoulder bag or the like, or as a key chain.

[Background Art] A snap hook is used to hang a belt onto a shoulder bag or to be used as a key chain.

In this snap hook, a holder part is rotatably supported by a belt hanging part for hanging a string, belt, etc., and an anchor part of the hook body is engaged with this holder part. The hook body is provided with a D-shaped ring to be attached to the shoulder bag, a hook part for attaching a key, etc. Since the hook body is rotatable relative to the holder portion, and the holder portion is rotatable toward the belt hook portion, the hook body is attached to the belt hook portion with a large degree of freedom.

In such conventional snap hooks, when a large external force is applied to the hook body, the anchor portion inserted into the holder portion of the hook body may deform and fall off from the holder portion. In particular, when the hook body is made of synthetic resin to reduce weight, the diameter of the anchor part expands after being inserted into the holder body to prevent it from coming off. The part often shrinks in diameter and falls off from the holder part.

The present invention has been made in consideration of the above facts, and an object of the present invention is to provide an improved snap hook that allows the hook body to be securely attached to the holder portion and is difficult to come off.

[Summary and operation of the invention] In the snap hook according to the invention, the holder part is pivotally supported on the belt hanging part, and the anchor part of the main body is inserted and engaged with the claw part of the expandable and contractible cylinder provided on the holder part. The snap hook is a snap hook, wherein the claw portion successively reduces the diameter along the insertion direction of the anchor portion, and rotatably locks the head of the anchor portion at a circumferential end surface of the smallest diameter portion perpendicular to the insertion direction of the anchor portion. and the outer periphery thereof is covered by the holder part, the anchor part has a tapered part that can be inserted into the claw part, and the claw part is inserted into the head formed at the tip of the tapered part in the insertion direction. It is characterized in that a locking surface is formed that contacts the circumferential end surface and is perpendicular to the axis of the claw portion. Therefore, in the present invention, when the hook body is attached to the holder part, when the anchor part is inserted into the claw part provided on the holder part, the diameter of the claw part is expanded elastically, and the head of the anchor part is shaped like the minimum diameter of the claw part. pass through the section. When the head of the anchor portion passes through the minimum diameter portion of the claw portion, the diameter of the claw portion is reduced, and the locking surface of the anchor portion comes into contact with the circumferential end surface of the minimum diameter portion of the claw portion, thereby preventing the anchor portion from coming off. Further, since the claw portion is covered by the holder portion, objects are prevented from directly touching the claw portion, and the anchor portion is prevented from accidentally slipping out from the claw portion.

Therefore, when an external force is applied to the hook body, the receiving part reliably prevents the head from coming off.
The hook body is firmly attached to the holder part.

[Embodiment of the invention] As shown in FIGS. 1 to 5, the snap hook according to this embodiment is formed by assembling a belt hanging portion 10, a holder portion 12, and a hook body 14.

A long hole 20 is formed in the belt hanging portion 10, and parallel pieces 10A and 10B are formed on both sides of the long hole 20. The parallel piece 10A serves as a hook for a shoulder belt (not shown) or the like. In addition, a pair of legs 22 protrude in parallel from near both ends of the parallel piece 10B in this belt hanging part 10, and a circular hole 24 is coaxially bored in each of these legs, so that the holder part 12 can be attached. It has become a department.

The holder part 12 has a square column shape, and pins 28 protrude from the outer periphery in directions away from each other and coaxially, and in this embodiment are inserted with gaps between them and the inner periphery of the circular hole 24. ing. Thereby, the holder part 12 is rotatably supported by the belt hanging part 10. This rotation angle is determined from the state shown in FIG.
It is preferable to configure it so that it can be rotated by 90 degrees left and right in 8 rotations, that is, by an angle of 180 degrees as a whole.

A circular hole 30 is formed in the holder part 12 from one end in the axial direction.
is formed through the circular hole 30, and the circular hole 30 has a small diameter portion 32 near the other end in the axial direction.

Inside the circular hole 30, a cylindrical portion 34 protrudes coaxially with the holder portion 12 from the boundary with the small diameter portion 32 in a direction opposite to the small diameter portion 32 (upward in FIGS. 1 and 2).
This cylindrical portion 34 has a constant wall thickness, but has a tapered shape that gradually becomes smaller in diameter toward the tip, and the tip is cut on a plane perpendicular to the axis to form a circumferential end surface 38A. Further, from this tip, four slits 36 are formed in the axial direction at equal intervals around the axis, as shown in FIG. For this reason, the cylindrical portion 34 is divided into four claw portions 38.
Therefore, the claw portion 38 forms a tapered insertion hole,
By elastically deforming the claw portion 38, its inner diameter, particularly its minimum diameter portion, can be expanded or contracted.

The hook body 14 has a hook portion 40 whose tip is bent into a J-shape, and a thin flexible piece 42 is formed in the opening of the hook portion 40 and projects toward the tip of the hook portion 40. ing. This flexible piece 42 has a slight gap between it and the tip of the hook part 40. Therefore, when hooking a D-shaped ring (not shown) to the hook portion 40, the flexible piece 42 can be elastically deformed and the operation can be done with a single touch.

An anchor portion 44 projects from the hook body 14 in a direction opposite to the hook portion 40. This anchor part 44 has a cylindrical shape, and the middle part has a tapered part 44A that has a small diameter toward the tip, and this tapered part 44A.
It has a head 44B that is continuous to the tip of 4A. An equal diameter portion 44C whose outer diameter does not change is provided at the connection portion of this tapered portion 44A to the head portion 44B.
Furthermore, a locking surface 44D formed perpendicular to the direction in which the anchor portion 44 is pulled out is provided at the joint portion of the head portion 44B with the equal diameter portion 44C.

The outer diameter of the head portion 44B is larger than the minimum diameter portion of the insertion hole formed by the claw portion 38 (see FIG. 1), and the tapered portion 44A is such that the hook body 14 is connected to the holder portion 12 as shown in FIG. The size is such that the claw portion 38 comes into contact with it when it is attached to.

Next, the manufacturing procedure of the snap hook formed according to this embodiment will be explained.

FIG. 6 is a plan view in which the belt hanging portion 10 is rotated 90 degrees around the pin 28 with respect to the holder portion 12 from the state shown in FIG. 4. With this arrangement, the belt hanging part 10 and the holder part 12
and can be integrally molded from synthetic resin.
That is, the hollowed out portions on the outside of the claw portion 38 and the hollowed out portion inside the claw portion 38 within the circular hole 30 of the holder portion 12 are formed by respectively drawing out the mold in the axial direction of the holder portion 12 and in the opposite direction. Ru. Also pin 28
In this section, a thin cylindrical core is inserted into the gap between the inner periphery of the circular hole 24 and the outer periphery of the pin 28 in directions approaching the circular hole 24 from opposite directions, and then the core is molded. By pulling it out, the belt hanging part 10 and the holder part 12 are molded simultaneously and in a separated state.

On the other hand, the hook body 14 is manufactured separately using a mold, and the anchor portion 44 is pushed into the insertion hole of the holder portion 12 in the direction of arrow A as shown in FIG. As a result, the anchor part 4
The head 44B of No. 4 passes through the distal end of the claw 38 while expanding its diameter due to elastic deformation, and when the head 44B passes through the insertion hole, the claw 38 returns due to the elastic force, as shown in FIG. The claw part 38 is the tapered part 4.
4A, and the hook body 14 is locked to the holder portion 12 as shown in FIG.

Snapshots assembled in this way are
A shoulder belt or the like is locked using the elongated hole 20 of the belt hanging portion 10, and the hook portion 4 of the hook body 14
0 onto the D-shaped ring of the shoulder bag (not shown) to complete the assembly.

When in use, the anchor part 44 is normally in the state shown in FIG. 3, so the upper end of the head 44B of the anchor part 44 is covered by the parallel piece 10B of the belt hanging part 10, so that the anchor part 44 cannot be seen from the outside. There is nothing unnatural about it.

Further, when the holder part 12 receives an upward deforming force in the state shown in FIG.
When the hook body 14 is pushed up against the belt hanging part 10, the outward opening force of the legs 22, 22 is blocked by the parallel pieces 10B, so that the hook body 14 is pushed up against the holder part 12. It will not come off carelessly.

Further, when the hook body 14 is subjected to a downward external force in the state shown in FIG. Since the force is applied in the direction of causing the anchor portion 44 to move, the claw portion 38 supports the anchor portion 44 more firmly. Also, when this external force is applied, the claw portion 38
receives this external force as a compressive force, so it can withstand large loads.

Furthermore, when in use, the anchor part 44 can freely rotate around the axis relative to the holder part 12, and the holder part 12 can rotate relative to the belt hanging part 10 around the pin 28, so that the hook body 14 It has a large degree of freedom with respect to the belt hanging part 10 and is easy to use.

In addition to attaching the belt to the shoulder bag, this invention can also be used as a key chain,
It can be used to hang a wide variety of items, such as for hanging strings to hold luggage.

Further, in the above embodiment, a slit is provided in the receiving portion, but if the slit is not provided and a highly flexible synthetic resin is used, the anchor portion can be inserted and prevented from falling out.

[Effects of the invention] As explained above, in the present invention, the anchor part is provided with a tapered part, a head part, and a locking surface, and is held by a claw part provided in the holder part, and prevents the anchor part from slipping out. This is prevented by the contact between the circumferential end surface of the smallest diameter portion of the hook portion and the locking surface of the anchor portion, which has an excellent effect of reliably attaching the hook body to the holder portion.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view (corresponding to the section taken along line I-I in Fig. 4) showing an embodiment of the snap hook according to the present invention, and Fig. 2 is a sectional view showing the state before the hook body is attached to the holder part. , FIG. 3 is a front view of the snap hook of this embodiment, FIG. 4 is a left side view of FIG. 3, FIG. 5 is an exploded perspective view of the snap hook of this embodiment, and FIG. FIG. 10...Belt hanging part, 12...Holder part,
14...Hook body, 38...Claw part, 40...Hook part, 44...Anchor part.

Claims (1)

[Scope of utility model registration request] A snap hook in which a holder part is pivotally supported on a belt hanging part, and an anchor part of the main body is inserted into and engaged with a claw part of an expandable and retractable cylindrical body provided on the holder part, and the claw part is inserted into the claw part of the anchor part. The diameter is gradually reduced along the insertion direction, and the head of the anchor part is rotatably locked at the circumferential end surface of the smallest diameter part perpendicular to the insertion direction of the anchor part, and the outer peripheral part is covered by the holder part, The anchor part has a tapered part that can be inserted into the claw part, and the head part formed at the tip of the tapered part in the insertion direction comes into contact with a circumferential end surface of the claw part and is perpendicular to the axis of the claw part. A snap hook characterized by forming a locking surface.