JP2928962B2 - Synthetic resin chuck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resealable synthetic resin chuck provided at an opening of a bag or the like.

[0002]

2. Description of the Related Art As shown in FIG. 3, a synthetic resin chuck having a re-opening / closing function composed of male and female claws engaged with each other at an opening of a bag body has a male base having a hook formed at one end on one base piece 1a. A single claw chuck composed of a claw element 2 and a female element 3 having a hook formed on the other base piece 1b to engage with the hook of the male element 2; As shown in FIG. 4, a double claw chuck in which two male claw elements 2a and 2b are arranged in parallel to each other so as to correspond to a heavy bag is known.

[0003]

[SUMMARY OF THE INVENTION However, even in chucking with bag of any nail type, the article being encased in a bag body was Ttei or or heavy or fluids if bulk In this case, as shown in FIG.
Acts on the chuck, one hook portion on the inner side of the bag of the female claw element 3 extends in the opening direction, and one male claw element 2a that engages with this tilts in a direction away from the occlusion, and The hook of the other female claw element 3 and the hook of the male claw element 2b are disengaged from each other and are released, and are spontaneously disengaged.

[0004] Such natural Hirakida' is wrapped incoming article is swung by pressure or definitive during transportation swinging pressure and the like in the case of stacked superposed bag opening chuck occlusion from the inside by the dynamic pressure It may come off. Therefore, it has been a common sense to avoid heavy packaging in a conventional bag with a chuck.

[0005] For example, when rice is packed in a bag with a chuck, the bag is stacked or transported after closing the chuck and heat-sealing the knob opening at the top of the chuck. Further, during transportation, the rice moves due to the oscillating pressure, so that the dynamic pressure affects the chuck and breaks out.

[0006] Even if the chuck is opened, the rice is not immediately leaked out since the knob piece at the upper portion of the chuck is sealed, but when the seal is cut off with scissors or the like, the rice is opened. May be scattered.

Also, when the chuck after opening is closed,
When the bag was turned over, the flow of the rice caused the chuck to break open from the inside and the rice could be scattered out of the bag, making it unsuitable as a rice packaging bag.

In order to solve the above problems , a bag with a chuck having a large thickness of the chuck itself has been considered. However, since the wall thickness of the occlusal type of chuck by synthetic resin nails also become stronger harder will bite strength on the nature of the resin enough to become large, or fingertip becomes painful in the case of occlusion by the fingertip pressing, due to the tension of the fingertip In the case of opening, there are problems such as slipping of the fingertip.

Further, since many amount of resin in the production of chuck meat Atsudai, with lowering the speed out pushing from the die, the production efficiency becomes poor cost such as time required to cool .

[0010] Generally, the bag body equipped with the chuck because not give Ru small habit seat <br/> width chuck the tab of the smaller their size, the meat in a bag having such a small size In the case where a thick and rigid chuck is provided, it is more difficult to release the chuck with a fingertip.

Therefore, even if the above-described double-jaw chuck shown in FIG. 4 is employed, the above-mentioned problems still remain, and it is an object to solve these problems.

An object of the present invention is to provide a synthetic resin chuck which solves the above-mentioned problems.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, a feature of the present invention is to provide a chuck in which male and female bite claws made of synthetic resin are integrally provided on separate base pieces. At the ends of two shafts protruding in parallel with one base piece, the tips of the hooks are formed so as to face outward in opposite directions, respectively , and the back of the hooks above both axes is parallel to the base piece. A male claw element connected by a membrane bridge, and a female claw element formed on the other base piece with the tips of hooks engaging with the hooks of the male claw element facing inward, respectively. It is.

Further, in the above configuration, one hook of the female claw element extends from a base piece substantially at the center between the hooks, and is formed at the tip of a strip that is not bonded to the base piece. Things.

[0015]

According to the above construction, the male claw elements are connected by the bridge while being the double claw chuck, so that the interval between the two male claw elements is always kept constant and does not tilt individually. Therefore, spontaneous disengagement due to tensile force due to heavy pressure or the like is prevented, and occlusal strength is increased. Furthermore, in the case where one hook portion of the female claw element extends from the base piece approximately at the center between both hook portions and is formed at the tip of a strip that is not bonded to the base piece, the bulk of the bag body is increased. Is absorbed by the movement of the non-adhered strip with the base piece, thereby ensuring a normal occlusal state.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 10a and 10b are separate base pieces. Reference numeral 11 denotes a male claw element provided on one base piece 10a. The male claw element 11 includes two shafts 11 protruding in parallel with the one base piece 10a.
Hooks 11c and 11d are formed at the tips of a and 11b with the tips thereof facing outward in opposite directions, respectively , and the back surfaces of the hooks 11c and 11d above both shafts 11a and 11b are parallel to the base piece 10a. This is a structure in which a cavity 11f surrounded by both shafts 11a and 11b, a bridge 11e and a base piece 10a is formed along the longitudinal direction by being connected by a film bridge 11e.

If necessary, the male claw element 11
The slit 13 may be provided along the longitudinal direction within the cavity area of one base piece 10a that forms the cavity 11f.

Reference numeral 12 denotes a female claw element for the male claw element 11. The female claw element 12 is provided with hooks 12a and 12b which engage with the hooks 11c and 11d of the male claw element 11 on the other base piece 10b. This is a structure in which the tips are formed facing inward.

The female claw element 12 has one hook 1
2a may extend from the base piece 10b substantially at the center 15 between the hooks 12a and 12b, and may be formed at the tip of the strip 14 not adhered to the base piece 10b.

Since the present invention has the structure as described above, the male claw element 11 is provided with the hooks 11c,
Because it is attached by a bridge 11e of the resin film parallel to the base piece 10a and 11d rear, the hook portion 11c,
11d is always kept constant, and both shafts 11a, 11b
Facilitates occlusal action with the hooks 12a and 12b of the female claw element 12 while maintaining the same normal occlusal state without individually swinging.

On the other hand, in the occlusal state, the opening / closing action of the chuck which occurs from the inside of the bag body, that is, the bag film below the chuck is moved by the moving pressure of the packaged article as shown in FIG. Even if the expansion occurs due to the action, the male claw element 11 can be connected to the hooks 11c, 11 above the two shafts 11a, 11b.
d Bridge 1 of resin film whose back surface is parallel to base piece 10a
1e, female hook elements 12 of both hooks 11c, 11d
The tilting deformation in the direction of disengaging the female claw is restrained, a predetermined distance is maintained, the state of occlusal engagement with both hooks 12a, 12b of the female claw element 12 is ensured, the opening of the chuck is prevented, and the double claw chuck is removed. Maintain a specific occlusal strength.

The strength of the occlusal strength can be adjusted to a desired occlusal force by adjusting the thickness of the resin film of the bridge 11e, and the occlusal force is changed depending on the type, light weight, etc. of the articles to be packed in the bag. It is possible.

Also, one hook 12a of the female claw element 12
To the base piece 1 at the approximate center 15 between the hooks 12a and 12b.
0b and formed at the end of the strip 14 not adhered to the base piece 10b, the bag film below the chuck is spread by the action of the tensile force F due to the bulk of the packaged article or the like. 2, the strip 14 that is not adhered to the base piece 10b spreads apart from the base piece 10b, as shown in FIG. And the occlusal state is maintained in the correct posture,
Prevention of opening of the chuck from the inside is further improved.

The chuck according to the present invention is effective not only in the above-described effective operation but also in manufacturing the chuck. That is, the two shafts 11a, 1
Since the cavity 11f is formed between the cavities 1b, cooling after the chuck is extruded from the die can apply cold air to the inside and the outside of the cavity 11f at the same time, thereby increasing the extrusion speed and efficiently producing. Is possible. In addition, the reduction of the resin material and the weight reduction are achieved by the cavity 11f.

Further, the slit 13 is formed in the cavity of one base piece 10a forming the cavity 11f of the male claw element 11.
Is provided along the longitudinal direction, it is possible to inject cooling water into the cavity 11f by expanding the slit 13 and to obtain a cooling effect higher than air cooling, thereby enabling high-speed production.

[0026]

The present invention as described above, according to the present invention is adapted to form one in parallel to the base piece of the two projecting from the distal end of the shaft to the tip of the hook portion on the outside facing opposite directions, both shafts upward of
A male claw element in which the back surface of the hook is connected by a bridge of a resin film parallel to the base piece, and a tip of a hook engaging with the hook of the male claw element facing the other base piece inward. since the formed a structure in which a female element, yet male claw element double-jaw chuck, so are connected by a bridge, the distance between the two male claw element is kept constant, and individually Since it does not tilt, it prevents spontaneous disengagement due to tensile force due to heavy pressure or the like, and increases occlusal strength. Further, in the case where one hook portion of the female claw element extends from the base piece approximately at the center between the hook portions and is formed at the tip of a strip that is not bonded to the base piece, the bulk of the bag body is increased. The burrs are absorbed by the movement of the strip that is not adhered to the base piece, a normal occlusal state is ensured, and a bag with a chuck corresponding to heavy packaging can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a sectional view illustrating the operation of the present invention.

FIG. 3 is a cross-sectional view of a conventional single-jaw chuck.

FIG. 4 is a cross-sectional view of a conventional double-jaw chuck.

[Explanation of symbols]

 10a Base piece 10b Base piece 11 Male claw element 11a Shaft 11b Shaft 11c Hook 11d Hook 11e Bridge 11f Cavity 12 Female claw element 12a Hook 12b Hook groove 13 Slit 14 Strip

Claims (2)

(57) [Claims] In a chuck in which male and female bite claws made of synthetic resin are integrally provided on separate base pieces, hooks are attached to tips of two shafts protruding in parallel with one base piece. While forming the tip in the opposite outward direction,
A male claw element in which the backs of the hooks above both axes are connected by a bridge of a resin film parallel to the base piece, and the tips of the hooks that engage the hooks of the male claw element on the other base piece face inward. And a female claw element formed so as to face the synthetic resin chuck. 2. A chuck in which male and female occlusal claws made of synthetic resin are integrally provided on separate base pieces, and a hook is provided at the tip of two shafts projecting in parallel with one base piece. While forming the tip in the opposite outward direction,
A male claw element in which the backs of the hooks above both axes are connected by a bridge of a resin film parallel to the base piece, and the tips of the hooks that engage the hooks of the male claw element on the other base piece face inward, respectively. And a hook portion of the female nail element extends from a substantially central base piece between the hook portions, and is formed of a non-adhesive strip. A synthetic resin chuck formed at the tip.