JPH0223132Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a slider for opening and closing a fastener provided at the opening of a synthetic resin bag.

<Prior Art> As a slider for opening and closing male and female interlocking fasteners provided at the opening of a synthetic resin bag, a slider having the shape and structure shown in, for example, Japanese Utility Model Application Publication No. 53-5102 is known.

This conventional slider, as shown in Figure 6,
A tightening part that keeps the fastener 2 engaged with the slider body 3 that slides over the fastener 2 provided at the opening of the bag body 1, and a guide part that guides the fastener 2 to this tightening part. The structure is such that a finger 4 for separating the engaged fastener 2 is provided with a gap 5 in front of this guide part.

The slider with this structure not only opens and closes the fastener 2 by sliding on the fastener 2, but also
As shown in the figure, when the fastener 2 is fully opened, the slider can be freely attached and detached by positioning the gap 5 outside the bag 1 from the open end of the bag 1 and inserting and removing the fingers 4. .

<Problems to be Solved by the Invention> When opening and closing the fastener 2 using the slider described above, it is natural to hold the slider with the fingertips as if photographing it.

By the way, according to the conventional slider described above, the fingers 4 have a curved structure that protrudes forward from the upper center of the slider body 3 like an elephant's trunk, so the parts held by the fingertips are on both sides of the slider body 3. The length l is in the range of ₁ . This slider body 3 is small enough to fit within your fingertips,
It is difficult to hold only both sides of the slider body 3, and a part of the fingertips can also grip the film on the outer surface of the opening end of the bag body 1 that passes through the gap 5 from both sides of the fingers 4.
There was a problem in that the slider stopped sliding, which obstructed the smooth opening and closing operation of the fastener.

Further, although this type of slider is described in Kojitsu Publication No. 54-40166, this type also has the same problems as above.

The technical problem of the present invention is to solve the problems of the slider equipped with fingers.

<Means for Solving the Problems> In order to solve the above technical problems, the present invention provides a slider that slides over a synthetic resin fastener consisting of male and female claws that interlock with each other. The main body includes a tightening part that holds the male claw and the female claw in mutual engagement, a guide part that guides the male claw and the female claw to the tightening part, and a part protruding from the slider main body in front of the guide part. In the slider, the extension part is provided with a finger for separating the male claw and the female claw that are engaged with each other with a gap between the extension part and the guide part. An elliptical guide protrusion having a width substantially equal to or larger than the width of the upper surface and having arcuate ends at both ends is formed at the lower end of the finger for sliding contact and guiding between the two-sided films guided by the guide part. The guide protrusion has a length such that the guide projection has a length such that the distance between the facing outer sides of the two-sided film is narrower than the width of the extension portion.

<Effect> The above technical means works as follows.

When opening and closing the fastener, when sliding the slider by simultaneously holding the slider body and the wide extension protruding from the slider body with your fingertips, the facing of the two-sided film guided by the slider body The outer space is guided by an oval guide protrusion at the lower end of the finger to a width smaller than the width of the extension part, and the fingertips holding the slider prevent the two sides of the film from being pinched, and the sliding operation of the slider is performed. Make things smoother.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3. Reference numeral 3 denotes a slider body, which has a tightening part 6 that holds the fastener 2 in engagement with a male claw and a female claw, and a guide part 7 that guides the fastener 2 to the tightening part 6. The length of the slider body 3 is _l1 .

In the present invention, an extending portion 8 is provided which is connected to the upper surface of the slider main body 3 by approximately the same width B and which is connected to both side surfaces and projects from the slider main body 3 by a length l ₂ . are provided with a gap 5. On both sides of the lower end of the finger 4, an elliptical guide protrusion 4b having a rounded semicircular arc surface 4a is formed. In the above case, the distance C between the two surfaces of the bag body 1 on both sides of the lower end of the finger 4 is narrower than the width of the extending portion 8 that extends with the same width B as the top surface of the slider body 3. In order to increase the difference D between the width B and the film facing distance C, the width of the extending portion 8 is made wider than the width of the upper surface of the slider body 3 (not shown). Measures can be taken to narrow the width.

In the above embodiment, the slider body 3 has a length of
In addition to _l1 , the length _l2 of the protruding extension part 8 increases the actual length l, and the slider 2 is held between the slider body 3 and the extension part 8 with the fingertips to open and close the fastener 2. It is something.

Another embodiment of the present invention will be described based on FIGS. 4 and 5.

In this other embodiment, guide side walls 9 are provided on both sides of the extension portion 8 in the previous embodiment.

This guide side wall 9 acts to actively guide the outer side of the upper end of the opening of the bag body 1 to the guide part 7 of the slider body 3, and only the guide side wall 9 has a height h of both sides of the extension part 8. This is increased compared to the previous embodiment, and the gripping area by the fingertips is expanded.

<Effects of the invention> As described above, according to the invention, the width of the extending portion is set to be approximately equal to or larger than the width of the upper surface of the slider body, and sliding contact is made between the two-sided film guided by the guide portion at the lower end of the finger. forming an elliptical guide protrusion with arcuate ends at both ends for guiding the guide protrusion, and guiding the guide protrusion in the longitudinal direction so that the distance between the facing outer sides of the two-sided film is narrower than the width of the extension part; Because of its long structure, the area for gripping the slider with the fingertips is expanded, and it also eliminates the need to grip the outside of the upper end of the opening of the bag body, which passes through the gap from both sides of the finger, with a part of the fingertips. There is an advantage that the fastener can be opened and closed by sliding the slider.

[Brief explanation of the drawing]

Figure 1 is a side view of the slider of the present invention, Figure 2 is a view taken in the direction of the arrow in Figure 1, Figure 3 is a view taken in the direction of the arrow in Figure 1, and Figure 4 is a side view of the slider showing another embodiment of the present invention. 5 is a view taken along the arrow in FIG. 4, and FIG. 6 is a perspective view showing the prior art. 1... Bag body, 2... Fastener, 3... Slider body, 4... Finger, 5... Gap, 6...
...Tightening part, 7...Guiding part, 8...Extending part, 9...
Guide side wall.

Claims (1)

[Scope of utility model registration request] A slider body that slides over a synthetic resin fastener consisting of male claws and female claws that engage with each other, and a tightening portion that maintains the mutual engagement of the male claws and female claws; A guide part for guiding the male claw and the female claw is provided in the part, and an extension part protruding from the upper surface of the slider body in front of the guide part, and a gap is provided between the extension part and the slider body. In a slider equipped with a finger for separating an engaged male claw and a female claw, the width of the extending portion is approximately the same width or more as the width of the upper surface of the slider body, and the lower end of the finger is guided to the guide portion. An elliptical guide protrusion with arc-shaped ends is formed for slidingly contacting and guiding the two-sided film, and the width in the longitudinal direction of the guide protrusion is equal to the distance between the opposing outer sides of the two-sided film. A fastener slider characterized by having a guiding length that is narrower than the width of the part.