JPH073925Y2 - Sliding fastener opening / closing fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a separable bottom end stop for a slide fastener, and more particularly to a separable bottom end stop for a user to operate with one hand.

[Conventional technology]

The separable bottom end stop that is generally used in the past is one in which the inserted insert pin comes off unless it is operated with both hands.
However, in general, a small child tends to operate the insert pin with his right hand and then release the insert pin and pull up the slider with his right hand, so that the operation is often unsuccessful. Also, some people with disabilities may only be able to use one hand, and conventional ones have to rely almost entirely on others. In order to solve this, it is sufficient to hold the insert pin inserted in the box body in the inserted state. As one of the ideas, it is disclosed in Japanese Utility Model Publication No. 55-93308. In this publication, the insert 6 (insertion piece 5) is provided with a projection 6 and the projection 6 is fitted in the box body (fixed body 3).
(Specifically, a concave portion) is provided.

[Problems to be solved by the invention]

According to the above-mentioned conventional technique, since the insert is provided with a projection, when the insert is inserted into the box body from the slider, the insert of the insert is easily caught on the shoulder edge of the slider. It is difficult to do. Also, although the protrusion is elastically fitted to the locking part on the box body, the slider is not elastically opened and closed, so that the thickness of the rod including the protrusion can be smoothly inserted into the slider. It is necessary to make it thin, but there is a problem in durability because the thickness of the insert pin becomes thin.

An object of the present invention is to solve the above problems and provide a separable bottom end stop for a slide fastener that can be smoothly operated with one hand and has excellent durability.

[Means for solving problems]

This invention relates to a separable bottom fitting device composed of a box, a box pin and a pin, and a recess is provided at the tip of one or both of the front and back surfaces of the pin to engage the box pin with the recess. A protrusion protruding into the recess is provided on the inner surface of the hole, and the width of the engaging hole in the direction of protruding the protrusion is formed wider than the thickness between the front and back surfaces of the insert pin. From the bottom to the bottom,
The projection has a tapered surface that becomes thinner in the protruding direction, and an inclined cam surface that reduces the thickness of the insert pin is formed at the lower end of the surface of the insert pin that has the recess.

〔Example〕

This invention will be specifically described. As shown in FIG. 4, the separable bottom end stop is a box body 4 fixed to the end of one fastener stringer 1a constituting the slide fastener 1.
And a box rod 5 which is integrated with the box body 4 and is continuously fixed to the fastener element 2a, and a butterfly rod 6 which is continuously fixed to the fastener element 2b at the end of the other fastener stringer 1b, In addition, the insert pin 6 is attached to the box body 4
The insert pin 6 is inserted into the engaging hole 7 through the slider 3 and has an engaging hole 7 that can be inserted substantially in parallel therewith.

In the separable bottom end stop, as shown in FIGS. 1 to 3,
A recess 8 is provided at the tip of the surface of the insert pin 6 which is the back side of the box body 4.
On the inner surface of the engaging hole 7, there is provided a protrusion 9 which is locked in the recess 8. The recess 8 may be provided at the tip of the surface which becomes the surface of the insert pin 6 as shown in FIG.
It may be provided on both front and back sides as shown in FIG.

Further, as shown in FIG. 3, the engaging hole 7 provided in the box body 4 is formed such that the width in the direction in which the protrusion 9 is projected is made wider than the thickness between the front and back surfaces of the insert pin 6, and When the rod 6 is normally inserted into the engagement hole 7, a gap 12 is formed between the facing surfaces provided with the recess 8 and the protrusion 9. The engaging hole 7 penetrates from the upper surface to the lower surface of the box body 4, and has an opening 13 communicating with the engaging hole 7 on the bottom surface of the box body 4.

In addition, the projection 9 is formed on the tapered surface 14 which becomes thinner in the protruding direction.

In addition, an inclined cam surface 15 that reduces the thickness of the insert pin 6 is formed at the lower end of the surface of the insert pin 6 where the recess 8 is provided.

To insert the insert pin 6 into the engagement hole 7 of the box body 4, the slider is omitted in FIGS. 5 and 6, but the insert pin 6 is inserted into the engagement hole 7. As you can see, as shown by the two-dot chain line,
The convex cam 9 is pushed by the inclined cam surface 15 provided at the tip of the insert pin 6. At this time, since the engaging hole 7 penetrates the box body 4 and the bottom surface is open, the convex 9 is pressed. As a result, the wall 4b, which is the back surface of the box body 4, bends back like a chain double-dashed line, and when the projection 9 faces the recess 8, the back wall 4b reciprocally engages with each other. At this time, the wall 4a, which is a little on the surface, also bends.

However, if the repulsive force of the back wall 4b of the box is too strong, the force of pulling out the insert pin 6 becomes large and the handling becomes inconvenient. Therefore, as a means for keeping the repulsive force moderate, as shown in FIGS. On the back wall 4b of the box body, slits 11 and 11 are provided at positions corresponding to both sides of the convex element 9 on the inner surface, or the slit 11 is provided in a U-shape, and the convex element 9 is provided inside the slit 11.
May be provided.

Furthermore, when inserting the insert pin 6 into the box body 4 and sliding the slider 3, the fastener stringer 1b on the insert pin 6 side, which is inserted in the same manner as the conventional one, is pressed with one hand and the slider with the other hand. Although 3 may be pulled, all of these operations can be performed with one hand, and in that case, as shown in FIG. 10, insert the insert pin 6 into the box body 4 and then move the box body 4 with the middle finger c. Alternatively, press the fabric on which the slide fastener is sewn to the abdomen, and use the thumb a and forefinger b to pull the slider 3a of the slider 3.
Pick and slide the slider 3.

At this time, since the middle finger c that presses the box body 4 may slip easily and may not be surely pressed, it is preferable to project the raised portion 10 at the end of the front wall 4a of the box body 4. Since the front and back of the box body 4 are not determined by the assembly, the raised portions 10 and 10 may be provided on the front wall 4a and the back wall 4b of the box body 4, respectively, as shown in FIG.

[Effect of device]

The separable bottom end stop of the slide fastener according to the present invention is one in which the insert pin is provided with a recess, and the protrusions that engage with the recess are provided in the box body, and the insert pin has a thickness smaller than the width of the engaging hole. In addition, since the insert pin is flat without any protruding portion, the insertion operation into the engagement hole of the box body as well as the slider becomes smooth, and the insertion operation becomes much easier even with one hand.

In addition, since the convex element has a tapered surface and the insert pin has an inclined cam surface, when inserting the insert pin into the engagement hole, there is little resistance for the insert pin to hit the protrusion, and the insert inserts smoothly. You will be able to.

Further, when the insert pin is inserted into the engaging hole, the engaging hole penetrates the box and the bottom surface is open. Since it is warped, even if the protrusion is provided in the engaging hole, it is possible to engage with a snap without any great resistance.

[Brief description of drawings]

FIG. 1 is a front view showing a partial cutaway of a separable bottom end stop of a slide fastener according to the present invention, and FIG. 2 is a II-II of FIG.
A sectional view taken along the line of arrows, FIG. 3 is a longitudinal sectional view of the same, FIG. 4 is a front view showing a main part of a slide fastener equipped with a separable bottom end stop according to the present invention, and FIG. FIG. 6 is a longitudinal sectional view of the same when inserted, FIG. 7 is a perspective view showing an example of a box body, and FIGS. 8 and 9 are front views showing an example of a box body. Fig. 10 is a side view showing the action of the fingers when closing the slide fastener, Fig. 11 is a side view showing another example of the box body, and Figs. 12 and 13 are examples of the insert pin and the box body. FIG. 4 ... Box body, 5 ... Box rod, 6 ... Butterfly rod, 7 ... Engagement hole, 8 ... Recessed portion, 9 ... Convex portion, 10 ... Raised portion, 12 ... Gap, 13 ... Opening, 14 ...
Tapered surface, 15… Inclined cam surface

Claims (1)

[Scope of utility model registration request] 1. A separable bottom end stop of a slide fastener in which a butterfly pin 6 is removably fitted in the box body 4 substantially parallel to the box rod 5 protruding from the box body. A recess 8 is provided at the tip of either one or both sides of the back surface, and
A projection 9 that projects into the recess 8 on the inner surface of the engagement hole 7 in which
Is provided, and the width of the engaging hole 7 in the direction in which the protrusion 9 projects is
The engaging hole 7 is formed to be thicker than the thickness between the front and back surfaces of the insert pin 6, the engaging hole 7 penetrates from the upper surface to the lower surface of the box body 4, and the projection 9 is provided with a tapered surface 14 which becomes narrow in the protruding direction. 6. A separable bottom end stop of a slide fastener, characterized in that an inclined cam surface (15) for reducing the thickness of the insert pin is formed at the lower end of the surface having the recess (8).