JP2008036244A - Clasp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relate to a structure of a knob portion of a fastener such as a pull ring and a crab.
A substantially annular fastener body having a notch cut at one end, an opening / closing member built in the fastener body and sliding in a direction to open / close the notch, and the opening / closing member In a clasp such as a pulling ring or a crab that has a knob part that protrudes outward from the clasp body, the knob part opens and closes at the neck part that passes through the slit of the clasp body and the tip of the neck part It is characterized by comprising a knob main body having a wide surface in which the width in the direction orthogonal to the opening / closing sliding direction of the member is set longer than the width of the fastener main body.
[Selection] Figure 1

Description

  The present invention relates to a structure of a knob portion of a fastener such as a pull ring or a crab.

A pull ring used for connecting a chain such as a necklace is small, and it is necessary to open the opening / closing member while putting a finger on the knob against the urging force of a spring urged in the closing direction.
However, since the knob is formed integrally with the opening and closing member, it is small or thin with the same thickness as the opening and closing member, so the contact area that hits the fingers and nails during operation is narrow, damaging the fingers and damaging the nails There was a fear.
In particular, the pulling wheel is operated by turning the hand behind the neck, which makes it difficult for elderly people, people with physical disabilities, as well as those who have extended nails or have nail claws. there were.
Also, a configuration is known in which a shakadama is screwed to the knob, but not only the structure is complicated, but the width and thickness of the knob are almost equal, and the above-mentioned problem cannot be solved.
Further, a pulling metal fitting of Utility Model Registration No. 311368 is also known.
This pull ring metal part is connected to a notch part in a part, a notch part on the outer periphery slightly away from one end of the notch part, and one end of a chain or string-like body on the outer periphery slightly away from the notch part. A tubular annular ring provided with a stop in a tube slightly separated from the other end of the notch, and a state protruding from the notch and movable into the tubular annular A central core portion having a knob portion formed by processing a plate material that is disposed and projects from an end portion of the tubular annular ring so as to close the cutout portion; and the central core that is accommodated in the tubular annular ring and The portion is composed of a coil spring that urges the cutout portion in a direction to close the cutout portion.
However, the knob that has been enlarged by processing the plate material is arranged so that its wide surface extends along the extending direction of the core portion and the wide surface of the knob faces the wide surface of the U-shaped ring. Because it was not done, it was exclusively for decorative purposes and not for improved operation.
Therefore, when operating the knob with the finger placed between the U-shaped ring and the knob, the knob that is hooked on the finger is only the surface area of the plate thickness and cannot be hooked on the wide surface. The above problems in operability are not solved.
This knob is not limited to the pulling ring, and there is a similar problem in a knob for operating a fastener such as a crab.
Utility model registration No. 311368

  The present invention has been made in view of the above circumstances, and its main problem is that the area of the knob portion in the direction orthogonal to the operation direction is set wider than the width of the fastener body, so that the elderly and body It is an object of the present invention to provide a clasp knob that is easy to use for those who are handicapped or those who have extended nails or are using artificial nails.

In order to solve the above problem, the invention of claim 1
A substantially annular fastener body having a notch cut at one end, an opening and closing member built in the fastener body and sliding in a direction to open and close the notch, and formed integrally with the opening and closing member In a fastener such as a pulling wheel or a crab having a knob protruding outward from the fastener body,
A wide surface in which the width of the neck portion passing through the slit of the clasp body and the direction perpendicular to the opening / closing sliding direction of the opening / closing member is set to be longer than the diameter of the cross section of the clasp body. It is characterized by comprising a knob body consisting of
In the invention of claim 2,
The knob is composed of a neck portion set to a length equal to or smaller than the width of the opening / closing member, and a gripping surface portion formed longer than the width of the clasp main body at the tip of the neck portion.
Furthermore, in the invention of claim 3,
The opening and closing member and the knob part punch the metal plate to form a primary product in which the opening and closing member and the neck part and the gripping surface part are the same surface,
The neck portion of the primary product is twisted by approximately 90 degrees, and the gripping surface is displaced by approximately 90 degrees with respect to the opening / closing member.

According to the present invention, as described above, the wide surface portion of the knob can be oriented in a direction perpendicular to the opening / closing direction of the opening / closing member, so that the contact area with the finger to be operated is widened, and the operation of the knob is easy. Can be accomplished.
Thus, the user is not only easy to use for elderly people and people with physical disabilities, but also for those who have extended nails or nailed nails, which is extremely beneficial.

In the present invention, the wide surface of the knob is arranged in a direction perpendicular to the opening / closing direction of the opening / closing member to increase the contact area with the finger to be operated, thereby realizing a fastener that is safe and excellent in operability.
Embodiments of the fastener of the present invention will be described below with reference to the drawings.

[Drawing wheel]
Example 1 shows the case where the fastener of this invention is applied to a pull ring.
The pulling wheel 1 shown in FIGS. 1 and 2 includes a notch 3 that is cut at one end of a hollow ring 2 to be an entrance and a stroke of a knob 8 along the hollow ring 2 from the vicinity of one end of the notch 3. A slot-like slit 2a extending corresponding to the length, a ring 4 such as a round ring connected to one end of a chain or string-like body on the outer periphery of the hollow ring 2 (may be a U-shaped ring), and the notch 3 and a stop portion 5 provided in the tube of the hollow ring 2 slightly separated from the other end side.

[Opening and closing member]
The opening / closing member 7 is made of an arc-shaped metal saddle that can slide in the hollow ring 2, and has a knob 8 protruding outward in the middle position.
The opening / closing member 7 is inserted on one end side of the notch 3 of the hollow ring 2 so as to be able to advance and retreat through the slit 2a, and opens and closes the notch 3.

At the rear end of the opening / closing member 7, one end is hooked on a stop portion 5 formed of a protrusion formed in the hollow ring 2 near the other end side of the cutout portion 3 of the hollow ring 2 and bent in an arc shape. The tip of the coil spring 6 is hooked.
Therefore, when the opening / closing member 7 is slid in the direction of opening the notch 3 while resisting the urging force of the coil spring 6, the notch 3 is urged in the closing direction by the repulsive force of the coil spring 6.

[Picking part]
The knob portion 8 includes a neck portion 9 protruding from the middle position of the opening / closing member 7 and a knob body 10 formed at the tip of the neck portion 9.
The neck portion 9 protrudes outward from the hollow ring 2 in which the opening / closing member 7 is stored, through the slit 2a, and is set to be shorter than the lateral width of the slit 2a so as to be able to advance and retract along the slit 2a. .
The neck portion 9 is preferably set to a length equal to or less than the width of the opening / closing member 7 for ease of manufacture, but may be longer than the width of the opening / closing member 7 as long as it is slightly shorter than the width of the slit 2a. This is because it is only necessary for the neck 9 to slide out from the slit 2a and slide in the forward / backward direction along the slit 2a.

The knob body 10 is set to have a length w1 wider than the diameter w2 of the cross section of the hollow ring 2 in the opening / closing sliding direction of the opening / closing member 7, in the illustrated example, in a direction substantially perpendicular to the extending direction of the opening / closing member 7. It is formed so that the wide surface 10a faces (see FIG. 3).
Here, the wide surface 10a is set to have a width and a height so as to have a contact area that does not damage a finger or nail to be operated.
The shape of the wide surface 10a is not limited to a circular shape as in the illustrated example, but may be an elliptical shape, a geometric shape, or any other shape.
Further, the wide surface 10a may not be solid, and may be a frame shape or a shape provided with a hole.

In the pulling wheel 1, the knob 8 is sandwiched between the wide surface 10 a of the knob body 10 of the knob 8 and the wide surface of the ring 4 facing the wide surface 10 a with the fingers. The opening / closing member 7 can be slid in the opening direction by pulling it toward the side, and the notch 3 can be opened.
At this time, since the wide surface 10a of the knob body 10 of the knob 8 hits the user's finger, the contact area is wide and the operation is easy and the finger and the nail are not damaged.

The pulling wheel 1 of Example 2 shown in FIGS. 4 and 5 shows a case where the opening / closing member 7 and the knob 8 are formed by punching a metal plate.
Since the configuration of the pulling wheel 1 in this case is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, a metal plate is punched to form a primary product including an opening / closing member 7 having a circular arc cross section as shown in FIG. 7 and a knob forming portion 8 ′.
Here, as for the said knob | pick part formation part 8 ', wide surface 10a' and neck part 9 'of the knob | pick main body 10' are the same surfaces.

By bending the neck portion 9 'of the primary product at an angle of approximately 90 degrees, the knob body 10 is displaced by approximately 90 degrees with respect to the extending direction of the opening and closing member as shown in FIG. Can be completed.
Further, when the neck portion 9 'becomes thick due to bending, it may be thinned by pressing with a press or the like.
Thereby, as shown in FIG. 6, the width w <b> 1 of the wide surface 10 a of the knob body 10 is wider than the diameter w <b> 2 of the cross section of the hollow ring 2.

FIG. 9 shows another embodiment of the neck portion 9 in which the thickness of the neck portion 9 is made thinner than that of the opening / closing member 7 and the knob main body 10 to facilitate bending.
FIG. 9A shows a primary product including the opening / closing member 7 and the knob portion forming portion 8 ′, and FIG. 9B shows a finished product in which the neck portion 9 is twisted.

10 and 11 show different embodiments in which a wire is bent to form the opening / closing member 7 and the knob 8.
In FIG. 10, a wire is bent like a single stroke to form a primary product including an arc-shaped opening / closing member 7 and a knob forming portion 8 ″.

Then, the neck portion 9 ″ of the knob portion forming portion 8 ″ is bent at an angle of about 90 degrees and extended so that the neck portion 9 ″ has a width substantially the same as that of the opening / closing member 7.
When the neck portion 9 ″ becomes thick due to bending, it may be thinned with a press or the like.
Accordingly, as shown in FIG. 11, the knob body 10 is displaced by approximately 90 degrees with respect to the extending direction of the opening / closing member, whereby the knob portion 8 can be completed.

Moreover, since the knob | pick main body 10 has the wide surface 10a which contacts a finger | toe and a nail | claw, various processes can be given to this wide surface 10a.
As an example, as shown in FIGS. 12A and 12B, dot-like or linear convex portions 10b or grooves are formed on the wide surface 10a so that they do not slip when in contact with fingers or nails. Can be.

Further, as shown in FIG. 12C, a hole 10 c may be formed in the wide surface 10 a of the knob body 10.
Further, as shown in FIG. 12D, the wide surface of the knob body 10 may be provided with a cushioning property by passing the rubber 10d through the hole 10c and making the wide surface of the knob body 10 a rubber surface.

FIG. 13 shows a third embodiment in which the fastener of the present invention is applied to the crab 11.
Conventionally, as shown in FIG. 14, the crab can 21 has a base portion 22 a that is hollow and open at the front and back to form a slit 23, and has a substantially 3/4 circular frame, and the crab can body 22. And an opening / closing member 27 inserted into the base portion 22a and pivotally attached to the midway portion.

The opening / closing member 27 has a closed position that is hooked on the distal end portion of the crab body 22 with the pivot position P as a fulcrum, and an open position that is separated from the distal end portion of the crab body 22 (indicated by a one-dot chain line in the figure) And is biased in the closing direction by a spring (not shown).
The rear end side of the opening / closing member 27 is integrally formed with a knob 28 for opening / closing the opening / closing member 27 and protrudes from the slit 23 of the base portion 22a.
Conventionally, since the knob 28 extends in a series from an opening / closing member 27 fitted in a groove formed in the base 22a, the knob 28 is set to have the same width as the opening / closing member 27, and is in contact with a finger. The area is getting narrower.

The crab 11 of Example 3 shown in FIG. 13 has the same configuration as the crab body 12, its base 12a, the slit 13 and the like except for the crab 21 and the knob shown in FIG.
The knob 18 provided on the opening / closing member 17 includes a neck 19 and a knob body 20.

Here, as in the second embodiment, the neck portion 19 is twisted approximately 90 degrees, and the wide surface 20a of the knob body 20 is arranged in a direction orthogonal to the opening / closing sliding (pivoting) direction of the opening / closing member 17. However, the knob body 20 may be formed in advance so that the wide surface is directed in a direction orthogonal to the pivoting direction of the opening / closing member 17 without being twisted.
Thereby, when operating the knob | pick part 18, since the wide surface 20a of the knob | pick main body 20 is pushed with a finger | toe or a nail | claw, a contact area becomes large and a finger | toe and a nail | claw are not damaged.

In the above embodiment, the pulling ring and the crab are illustrated as the fasteners, but other hooks can be applied.
Further, the present invention can be applied not only to jewelry such as a necklace but also to a fastener used for a strap for a mobile phone or a camera, and its use is not particularly limited.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

It is a perspective view of the fastener of Example 1. It is a side view which shows the usage example of the fastener. 3 is a cross-sectional view illustrating a wide surface of a knob main body according to Embodiment 1. FIG. It is a sectional side view of the fastener of Example 2. FIG. 5 is a plan view of FIG. 4. It is sectional drawing explaining the wide surface of the knob | pick part main body of Example 2. FIG. (A) is a side view of the primary product of the opening / closing member with a knob, and (b) is a front view thereof. (A) is a side view of the completed product which twisted the neck part of the opening-and-closing member with a knob part, (b) is the same front view. (A) is a side view of an opening / closing member with a knob when the neck is narrow, and (b) is a front view of the same. (A) is the side view which formed the knob | pick part formation part by bending a wire, (b) is the same front view. (A) is the side view which twisted the neck part of the knob formation part of FIG. 10, and was used as the knob part, (b) is the same front view. (A) Front view when a point-like convex part is provided in the knob part, (b) Front view when a linear convex part is provided in the knob part, (c) When a hole is provided in the knob part (D) It is a side view of the opening-and-closing member with a knob part at the time of providing a buffer part in a knob part. It is the side view which notched a part which shows the Example of crabican. It is a side view which shows the conventional crab.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pull ring 2 Hollow ring 2a Slit 3 Notch part 4 Ring 5 Stop part 6 Coil spring 7 Opening / closing member 8 Knob part 9 Neck part 10 Knob main body 10a Wide surface 11 Crab body 12 Crab body 16 Spring 17 Opening / closing member 18 Knob part 19 Neck part 20 Pick body 20a Wide surface

Claims (3)

A substantially annular fastener body having a notch cut at one end, an opening and closing member built in the fastener body and sliding in a direction to open and close the notch, and formed integrally with the opening and closing member In a fastener such as a pulling wheel or a crab having a knob protruding outward from the fastener body,
A wide surface in which the width of the neck portion passing through the slit of the clasp body and the direction perpendicular to the opening / closing sliding direction of the opening / closing member is set to be longer than the diameter of the cross section of the clasp body. A clasp characterized by comprising a knob body made of   The knob part is composed of a neck part set to a length equal to or smaller than the width of the opening and closing member, and a gripping surface part formed at the tip of the neck part longer than the width of the fastener body. The fastener according to 1. The opening and closing member and the knob part punch the metal plate to form a primary product in which the opening and closing member and the neck part and the gripping surface part are the same surface,
The fastener according to claim 1, wherein the neck portion of the primary product is twisted by approximately 90 degrees and the gripping surface portion is displaced by approximately 90 degrees with respect to the opening / closing member.

Images