JP7840366B2 - Zipper opening and closing mechanism for resealable bags - Google Patents

Description

This invention relates to a zipper opening and closing device for a zippered bag.

Conventionally, zippered bags equipped with a zipper consisting of a groove and a convex rib that engages with the groove have the problem of being difficult to open for children and the elderly with weak finger strength. The lever piece shown in Patent Document 1, proposed to solve the above problem, is attached to the outer surface of the bag and makes it easier to grasp, but it is difficult to open if the groove and convex rib that make up the zipper are tightly fitted together or if there are multiple zippers, and it is discarded together with the zippered bag after one use, which poses an environmental problem.

Japanese Patent Publication No. 2022-140185

The present invention was made to solve the above problems and aims to provide a zipper opening and closing device for zipper bags that can easily open the zipper of a zipper bag and can be used repeatedly.

To solve the above problems, the zipper opening and closing device for a zippered bag of the present invention comprises a sliding contact means provided with a pair of sliding contact parts that slide against the outer surface of a zippered bag, which is provided with a zipper composed of a recessed groove and a convex rib that engages with the recessed groove, and a zipper opening and closing means provided between the sliding contact parts, wherein the zipper opening and closing means is set to a length that penetrates between the recessed groove and the convex rib and is inserted into the zippered bag, and the sliding contact means is a base bent into a triangular cross-sectional shape The sliding contact portions, which are folded back in an annular shape on both ends and to the left and right, are formed at the four corners of the base, and the edge of the gripping portion, which is pinched with the fingers to widen the gap between the sliding contact portions, is rotatably supported on the inner surface of the sliding contact portions, and by pinching the gripping portion with the fingers to widen the gap between the sliding contact portions, the sliding contact portions move along the zipper on the outer surface of the zippered bag, the sliding contact means is composed of the base and the gripping portion, and the zipper opening and closing means is provided between the sliding contact portions and at the center position of the sliding contact means.

The zipper opening and closing device for a zippered bag of the present invention comprises a sliding contact means provided with a pair of sliding contact parts that slide against the outer surface of a zippered bag, which is provided with a zipper composed of a recessed groove and a convex rib that engages with the recessed groove, and a zipper opening and closing means provided between the sliding contact parts, wherein the zipper opening and closing means is set to a length that penetrates between the recessed groove and the convex rib and is inserted into the zippered bag, wherein the sliding contact means has a base bent into a triangular cross-sectional shape, and the sliding contact parts are formed at the four corners of the base, with the ends of the gripping parts that are pinched with fingers to spread the sliding contact parts apart. The sliding contact mechanism is rotatably supported on the inner surface, and by pinching the tab with the fingers and widening the gap between the sliding contacts, the sliding contacts move along the zipper on the outer surface of the zippered bag. The sliding contact mechanism is composed of the base and the tab, and the zipper opening/closing mechanism is located between the sliding contacts and at the center of the sliding contact mechanism. As such, simply moving the sliding contact mechanism along the zipper of the zippered bag opens the zipper, which has the effect of making it easy to open the zipper even if it is tightly fitted or if the zipper is weak, or even if it is a child or an elderly person with weak finger strength, and it can be used repeatedly.
Furthermore, as described in claim 2, when the zipper opening and closing mechanism of a zipper opening and closing device for a zippered bag is formed of a rod-shaped body, the zipper opens in accordance with the movement of the sliding contact mechanism, which has the effect of being easy to use.

Front view of the zipper opening and closing mechanism of a resealable bag. Side view of the same as above. The same as above, in use. Front view of a reference example of a zipper opening/closing mechanism for a resealable bag. Side view of the same as above. The same as above, in use. A diagram illustrating the usage of a zipper opening/closing mechanism for a zippered bag, as a reference example.

Embodiments of the present invention will be described in detail below with reference to Figures 1 to 7 .

The zipper opening and closing device 1 of the zippered bag consists of a sliding contact means 7, which has a pair of sliding contact parts 6 that slide against the outer surface of the zippered bag 5, which is equipped with a zipper 4 composed of a recessed groove 2 and a convex rib 3 that engages with the recessed groove 2, and a zipper opening and closing means 8 provided between the sliding contact parts 6 at the center position of the sliding contact means 7, and the length of the zipper opening and closing means 8 is set to penetrate between the recessed groove 2 and the convex rib 3 and be inserted into the inside 9 of the zippered bag. The outside of the zipper 4 is the outside of the bag 10.

The sliding contact means 7 has sliding contact portions 6 formed at the four corners of the base 11, which is bent into a triangular cross-sectional shape and has ring-shaped folding on both ends of the base 11. The edge of a pinch portion 12, which is used to spread the sliding contact portions 6 apart by pinching it with the fingers, is rotatably supported on the inner surface of the sliding contact portions 6. By pinching the pinch portion 12 with the fingers and spreading the sliding contact portions 6 apart, the sliding contact portions 6 can slide against the outer surface of the zippered bag 5. The sliding contact means 7 consists of the base 11 and the pinch portion 12. If the zipper opening/closing device 1 of the zippered bag is clip-shaped, it is locked to the outer surface of the zippered bag 5 when the zipper 4 is closed, so it does not come off and maintains airtightness. Furthermore, if the clip-shaped sliding contact portion 6 is designed to lock outside the zipper 4, the sliding contact portion 6 does not get in the way, and the zipper opening/closing means 8 can be wrapped with the zipper 4, which has the effect of improving airtightness.

The zipper opening/closing mechanism 8 is located in the center of the ceiling plate 13 of the base 11, which is bent into a triangular cross-sectional shape. The zipper opening/closing mechanism 8 is set to be a rod-shaped body made of a material and thickness that does not bend during zipper opening and closing operations, and it is desirable that it has a diameter of 0.6 mm or more. The zipper opening/closing device 1 of the zippered bag can be manufactured from synthetic resin, and it is also possible to form the zipper opening/closing mechanism 8 from synthetic resin, and bonding or welding can be done as needed.

As shown in Figures 4 to 6, a reference example of the zipper opening/closing device 21 for a zippered bag has a pair of legs 23 of a sliding contact means 22 facing each other with a gap S of 1.4 mm. A sliding contact portion 24 is provided on the inner surface of the sliding contact means 22, and the legs 23 are fixed to the base 25 by methods such as bonding or welding. A rod-shaped zipper opening/closing means 26 is provided in the center of the base 25. The zipper opening/closing means 26 is bent so as to protrude and inclinate toward the side that is moved when opening the zipper 4. By bending it so as to protrude and inclinate toward the side that is moved, an angle can be set with respect to the zipper 4, making it possible to open the zipper 4 with little force. A gap S of 1.9 mm was also acceptable, but when it was 2.4 mm, it was too wide and inconvenient to use. The zipper opening/closing device 21 for a zippered bag consists of the legs 23, the base 25, and the zipper opening/closing means 26, and may be integrally formed from synthetic resin. Furthermore, as shown in Figure 7, the chuck opening and closing mechanism 26 may be directly provided on the sliding contact mechanism 22 without a base. The tip of the leg portion 23 is curved outward, and a guide portion 27 is formed therein.

The zipper opening and closing means 8 and 26 of the zipper opening and closing device 1 of the zippered bag are formed of rod-shaped bodies, but they may also be formed of flexible string-like material. By making the diameter of the flexible string-like material approximately 0.17 mm, the zipper opening and closing means 27 can be inserted into the zipper 4 and the zipper 4 can be closed, thereby maintaining the airtightness inside the bag 9. If the zipper opening and closing means 27 is made of string-like material, it is desirable to provide a weight to prevent it from flying up.

1 21 Zipper opening and closing device for zippered bag 2 Recessed groove 3 Convex rib 4 Zipper 5 Zippered bag 6 24 Sliding contact part 7 22 Sliding contact means 8 26 Zipper opening and closing means 9 Inside the bag

Claims (2)

A zipper opening and closing device for a zippered bag, comprising: a sliding contact means provided with a pair of sliding contact parts that slide against the outer surface of a zippered bag equipped with a zipper composed of a recessed groove and a convex rib that engages with the recessed groove; and a zipper opening and closing means provided between the sliding contact parts, wherein the zipper opening and closing means is set to a length that penetrates between the recessed groove and the convex rib and is inserted into the zippered bag, wherein the sliding contact means is a base bent into a triangular cross-section, with both ends of the base folded back in annular shapes on the left and right sides. A zipper opening and closing device for a zippered bag, characterized in that the following contact parts are formed at the four corners of the base, the edge of a pinch that is pinched with the fingers to widen the gap between the contact parts is rotatably supported on the inner surface of the contact parts, the contact parts move along the zipper on the outer surface of the zippered bag by pinching the pinch with the fingers to widen the gap between the contact parts, the contact means is composed of the base and the pinch, and the zipper opening and closing means is provided between the contact parts and at the center of the contact means. The zipper opening and closing device for a zippered bag according to claim 1, wherein the zipper opening and closing means is formed of a rod-shaped body.