JPH04294747A - Synthetic resin-made fastener - Google Patents

Abstract

PURPOSE:To considerably enhance the air- and water-tightness of a fastener by a method wherein the ends of the auxiliary engaging elements of one main engaging element remain widened toward the auxiliary engaging elements of the other main engaging element before starting the interengagement of the main engaging elements and, upon their engagement, the auxiliary engaging elements thereof are urged against one another accompanied by the flexible deformation at the predetermined places thereof. CONSTITUTION:A synthetic resin-made fastener consists of a main socket engaging element 3 and a main projecting engaging element 4, each made of a flexible thermoplastic synthetic resin and engageable with the other, and a pair of auxiliary engaging elements 5L and 5R and a pair of auxiliary engaging elements 61 and 6R, respectively, each pair consisting of projecting pieces and adjoining to their respective main engaging elements within such a range as not to create hindrance to their interengagement. At least on pair of auxiliary engaging elements 6L and 6R remain widened toward the other pair of auxiliary engaging elements 5L and 5R, so that the ends of the latter elements 5L and 5R are oriented inwardly of the sloping inner surfaces of the former elements 6L and 6R immediately before starting the interengagement of the main engaging elements. By interlocking of the main projecting engaging element and the main socket engaging element, the auxiliary engaging element pairs 5L, 5R and 6L, 6R are urged against one another accompanied by the flexible deformation at the predetermined places thereof.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a re-closable synthetic resin fastener provided on the opening of a bag, a sheet covering material, etc.

0002

[Prior Art] A resumable synthetic resin fastener consisting of male and female claws that interlock with each other is provided at the opening of the bag body, and guiding pieces are protruded from the left and right sides of the male claws.
It is known from No. 0522.

0003

The above-mentioned conventional synthetic resin fastener has the function of guiding and guiding the male and female nails so that they are correctly engaged with the guide piece when the male and female nails are engaged.

[0004] In this type of synthetic resin fastener, improving the sealing performance when the male and female claws are in occlusion is an important issue for preserving and retaining the contents. No particular consideration was given to improving sealing performance.

[0005]

[Means for Solving the Problems] The present invention has been made in order to solve the above-mentioned problems of the conventional art, and its characteristic structure is that mutually bonded parts are made of flexible thermoplastic synthetic resin. a main occlusal element consisting of male and female nails that engage;
Each of the main occlusal elements includes an auxiliary occlusal element consisting of a pair of left and right protrusions adjacent to each other within a range that does not interfere with occlusion, and the auxiliary occlusal element is at least one of the main occlusal elements consisting of the male and female nails. Immediately before the main occlusal element starts occlusion, the occlusal auxiliary element on the side is expanded so that the tip of the occlusal auxiliary element on the other main occlusal element side is located on the inner inclined surface, and the main occlusal element By engaging the two occlusal auxiliary elements, the two occlusal auxiliary elements are brought into a crimped state with flexible deformation of the required portions.

[0006]

[Operation] With the above configuration, when the main occlusal element occlusions, the tip of the other occlusal auxiliary element comes into contact with the inner inclined surface of one of the occlusal auxiliary elements, which is expanded, and thereby,
The main occlusal elements perform centripetal action to control the correct occlusal posture, and after the main occlusal elements have occlusated, the occlusal auxiliary elements perform a sealing action on both sides of the main occlusal elements by crimping the occlusal auxiliary elements, and the occlusal auxiliary elements Reaction forces in opposite directions due to the crimping of the elements act on the occlusal main occlusal elements, improving the occlusal adhesion of the main occlusal elements, and also improving the sealing performance of the main occlusal elements themselves.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. In FIG. 1, reference numerals 1 and 2 are base pieces, and the base piece 1 is provided with a female claw 3, and the base piece 2 is provided with a protruding male claw 4 that can engage with the female claw 3. These female claws 3 and male claws 4 constitute the main occlusal elements. Although the female claws 3 and male claws 4 are shown projecting from the base pieces 1 and 2 in the drawing, they may be formed by directly projecting from the film of the bag body.

[0008] Each of the male and female nails 3, 4, which are the main occlusal elements, is provided with auxiliary occlusal elements 5L, 5R, 6L, 6R consisting of a pair of left and right protrusions adjacent to each other within a range that does not interfere with occlusion. These occlusal auxiliary elements 5L, 5R and 6L, 6
At least the occlusal auxiliary elements 6L and 6R on the side of the male claw 4 of the female and male claws 3 and 4 are inclined outwardly in a widening shape and have an inclined inner surface.

[0009] The occlusal auxiliary elements 5L, 5R and 6L, 6
The range in which R is provided in each of the male and female claws 3 and 4 that does not interfere with occlusion is the stage immediately before the male and female claws 3 and 4 engage in occlusion.
At least one of the nails (in the case of male and female nails with the structure shown, the female nail) is partially enlarged from its original shape, but at this time, the occlusal auxiliary elements 5L, 5R and 6L
, 6R in a position that prevents its expansion, occlusion becomes difficult or impossible, so male and female nails 3,
The position at a distance from the enlarged deformed state during occlusion in No. 4 is equivalent.

[0010] The occlusal auxiliary elements 5L, 5R and 6L, 6
The relational structure of R will be explained in detail with reference to FIG. Occlusal auxiliary element 5L
, 5R, the left and right widths AL1, A are measured from the surface M-M of the base piece 1 with the center axis 0-0 of the male and female claws 3, 4 as the center.
R1 (AL1=AR1), one occlusal auxiliary element 6L,
Contact points PL1, PR1 at heights FL1, FR1 (FL1=FR1) that first contact one of the occlusal auxiliary elements 6L, 6R when entering 6R, and widths AL2, AR2 (AL
2 = AR2), and the heights FL3 and FR3 (FL3 = FR
It has the tips of the thick attachment points PL2 and PR2 of 3).

[0011] In the occlusal auxiliary elements 6L and 6R,
The central axis 0 of the male and female claws 3 and 4 from above the plane N-N of the base piece 2
-0 as the center, the left and right widths of the base end are CL, CR, the left and right widths of the front end are BL, BR, and CL, CR<BL, BR,
Occlusal auxiliary element 6L due to the relationship AL1+AR1≦BL+BR
, 6R has an expanded tip, and has an inclined surface on the inner side, and the above-mentioned contact point is located at the height FL2, FR2 (FL2=FR2) of the inner inclined surface from the plane N-N of the base piece 2. Contact point P where contact points PL1 and PR1 first contact
L3 and PR3 are the height FL from the plane N-N of the base piece 2.
4, FR4 (FL4=FR4), crimping point PL4 where the contact points PL2 and PR2 are crimped at a point with width D
, PR4, and crimping points PL6, PR6 to which the contact points PL1, PR1 are crimped. In addition, in the above embodiment, the occlusal auxiliary elements 5L, 5R and 6L,
Although the shape of 6R is configured to be symmetrical with respect to the central axis O-O of the male and female claws 3 and 4, the function is not limited to this and it is also possible to improve the function by appropriately changing the design.

Next, the operation of the above structure will be explained with reference to FIG. In FIG. 2(A), the male and female claws 3 and 4 of the main occlusal elements are in a state before occlusion, and both base pieces 1 and 2 are close to each other with a facing gap E1. At this time, the other occlusal auxiliary elements 5L, 5R enter into the one expanded occlusal auxiliary elements 6L, 6R, and the other occlusal auxiliary elements 5L, 5R
The abutting points PL1 and PR1 at the tips of the occlusal assisting elements 6L and 6R abut against the inner inclined surfaces of the occlusal auxiliary elements 6L and 6R. As a result, the male and female claws 3 and 4 are guided centripetally on the correct occlusal axis and are positioned facing each other.

From the state shown in FIG. 2(A), by pressing the back surfaces of the male and female claws 3 and 4, the male and female claws 4 are brought into contact with each other as shown in FIG. 2(B). The tip of the other occlusal auxiliary elements 5L, 5R enters the female nail 3 by sliding on the inner inclined surface of one of the enlarged occlusal auxiliary elements 6L, 6R. It becomes a shape that pushes and expands. At this time, the male and female claws 3 and 4 enter the occlusal state while maintaining a centripetally guided posture on the correct occlusal axis.

Furthermore, as shown in FIG. 2(C), when the male and female claws 3 and 4 are completely engaged, both base pieces 1,
The opposing gap E0 of No. 2 is the closest. Then, the contact point PL1 at the tip of the other occlusal auxiliary element 5L, 5R
, PR1 are attached to the crimping points PL6, PR6 on the inner inclined surfaces of one of the occlusal auxiliary elements 6L, 6R, and contact points PL2, PR2 at the tips of the other occlusal auxiliary elements 5L, 5R are attached to the crimping points PL6, PR6 of the occlusal auxiliary elements 6L, 6R. It is crimped to the crimping points PL4 and PR4 on the inner inclined surface.

[0015] As a result, both sides of the male and female nails 3 and 4, which are the main occlusal elements in occlusion, ie, in the bag body, the inside and outside of the opening are connected to both occlusal auxiliary elements 5L, 5R and 6L, 6R.
Seal it watertight and airtight. In addition, by crimping both the occlusal assisting elements 5L, 5R and 6L, 6R, the base piece 1
, 2, an elastic reaction force acts on them to widen the opposing gap E0. This reaction force acts on the male and female claws 3 and 4 of the main occlusal elements that are in occlusion, increasing the degree of close contact between the occlusal contact surfaces of the male and female claws 3 and 4, and improving the sealing performance of the main occlusal elements themselves.

Various design modifications based on the principle of the present invention will be presented in FIGS. 3 to 13. In FIG. 3, the other occlusal auxiliary elements 5L, 5R are replaced with the one occlusal auxiliary elements 6L, 6.
It has a configuration in which it is expanded within the expansion range of R, and the pressure force of the occlusal auxiliary elements 5L, 5R and 6L, 6R is increased. In addition, FIG. 4 shows one of the occlusal auxiliary elements 6L and 6R.
The inner inclined surface of the occlusal assisting element 5L, 5R can easily enter the inner inclined surface of one of the occlusal assisting elements 6L, 6R, providing a smooth guiding action.

FIG. 5 shows that the male and female claws 3 and 4 of the main occlusal elements and the bases 7 of both occlusal auxiliary elements 5L, 5R, 6L, and 6R are thickened and strengthened, and FIG. 6 shows that one of the occlusal auxiliary elements 6L,
The starting point of the base of 6R is the base of the male claw 4, which is also reinforced by the thickness around the base.

FIG. 7 shows a bent part 9 formed near the base of one of the occlusal auxiliary elements 6L, 6R, and FIG. 8 shows a bent part 11 formed in the middle part of one of the occlusal auxiliary elements 6L, 6R. This is intended to increase the elastic restorability of one of the occlusal auxiliary elements 6L and 6R.

FIG. 9 shows that the tips of the other occlusal auxiliary elements 5L, 5R are shaped like right-angled edges, and the one occlusal auxiliary elements 6L, 6
Line contact is made with the inner inclined surface of R, and FIG. 10 shows a configuration in which the tip surfaces of both occlusal auxiliary elements 5L, 5R, 6L, and 6R are arcuate, reducing the sliding friction force and ensuring smooth sliding action. It is used for business purposes.

FIG. 11 shows the other auxiliary occlusal elements 5L, 5R at the time when the male and female nails 3, 4, which are the main occlusal elements, come into contact before occlusion.
A control stopper 14 consisting of a protrusion that locks the tip of the occlusal assisting element 6L, 6R is provided on the inner inclined surface of one of the occlusal assisting elements 6L, 6R, and FIG. 12 shows a configuration in which a control stopper 15 consisting of a concave groove is provided. This means that before the male and female claws 3, 4 engage, the other occlusal auxiliary elements 5L, 5R are replaced with one occlusal auxiliary element 6L,
Temporarily prevent entry into 6R, while the male and female claws 3 and 4
It corrects the inclination of the teeth, restores the posture, and performs a moderating action to lead to secure occlusion.

FIG. 13 shows that an inverted V-shaped groove 16 is provided at the tip of one of the occlusal auxiliary elements 6L, 6R, and the other occlusal auxiliary element 5L,
The tip of 5R is configured as a pointed end 17 that can enter into the inverted V-shaped groove 16. This also performs the same function as the control stoppers 14 and 15 shown in FIGS. 11 and 12.

Furthermore, although it cannot be expressed in the drawings, one of the enlarged occlusal auxiliary elements 6L and 6R is provided with a main occlusal element consisting of a female claw, and is made of a highly flexible resin material. The main occlusal elements consisting of male claws are disposed on the occlusal auxiliary elements 5L and 5R (therefore, the male and female are located in opposite positions compared to the previous embodiment), and are made of a highly rigid resin material to ensure smooth occlusion. It is possible to improve the alignment and crimping situation. Under conditions where the occlusal auxiliary elements 6L, 6R on one side and the occlusal auxiliary elements 5L, 5R on the other side can be visually recognized, it is also possible to make each one a different color to realize a visual guidance effect and an aesthetic sense.

[0023]

As described above, the present invention provides auxiliary occlusal elements consisting of a pair of right and left protrusions adjacent to each of the main occlusal elements consisting of male and female nails within a range that does not impede occlusion. Immediately before the main occlusal element starts occlusion, the occlusal auxiliary element on the element side is expanded so that the tip of the occlusal auxiliary element on the other main occlusal element side is located on the inner inclined surface, and the main occlusal element Since the structure is such that when the elements interlock, both of the auxiliary occlusal elements are brought into a crimped state with flexible deformation of the required parts, the correct occlusal posture is controlled by the centripetal action of the main occlusal elements. After occlusion of the main occlusal elements, the occlusal auxiliary elements perform a sealing action on both sides of the main occlusal element due to the crimping of the occlusal auxiliary elements, and reaction forces in opposite directions due to the crimping of the occlusal auxiliary elements cause occlusion. It has the advantage of acting on the main occlusal elements that are attached to it, increasing the occlusal adhesion of the main occlusal elements, and improving the sealing properties of the main occlusal elements themselves, significantly increasing the airtightness and watertightness of this type of fastener. .

[Brief explanation of drawings]

[Fig. 1] Cross-sectional view of the present invention

[Fig. 2] Cross-sectional view explaining the action of Fig. 1

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a sectional view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing another embodiment of the present invention.

FIG. 7 is a sectional view showing another embodiment of the present invention.

FIG. 8 is a sectional view showing another embodiment of the present invention.

FIG. 9 is a sectional view showing another embodiment of the present invention.

FIG. 10 is a sectional view showing another embodiment of the present invention.

FIG. 11 is a sectional view showing another embodiment of the present invention.

FIG. 12 is a sectional view showing another embodiment of the present invention.

FIG. 13 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

1 Base piece 2 Base piece 3 Female nail 4 Male claw 5L Occlusal auxiliary element 5R Occlusal auxiliary element 6L Occlusal auxiliary element 6R　Occlusal auxiliary element 14 Control stopper 15 Control stopper 16 Inverted V-shaped groove 17 Point

Claims (4)

[Claims] Claim 1: A main occlusal element consisting of mutually interlocking female and male claws formed of flexible thermoplastic synthetic resin, and a pair of left and right protrusions adjacent to each of the main occlusal elements within a range that does not interfere with occlusion. The occlusal auxiliary element on at least one main occlusal element side is such that the tip of the occlusal auxiliary element on the other main occlusal element side slopes inward immediately before the main occlusal element starts occlusion. A synthetic resin fastener which has an expanded shape so as to be located on a surface, and when the main occlusal element engages with the two auxiliary occlusal elements, the two auxiliary occlusal elements are brought into a compressed state with flexible deformation of required parts. 2. A main occlusal element consisting of mutually interlocking male and female nails formed of flexible thermoplastic synthetic resin, and a pair of left and right protrusions adjacent to each of the main occlusal elements within a range that does not interfere with occlusion. The occlusal auxiliary element on at least one main occlusal element side is such that the tip of the occlusal auxiliary element on the other main occlusal element side slopes inward immediately before the main occlusal element starts occlusion. The control stopper, which is expanded so as to be located on the surface, and is formed of a protrusion or a concave groove that locks the tip of the other auxiliary occlusal element at the time when the main occlusal element contacts the other auxiliary occlusal element, is tilted inwardly. A fastener made of synthetic resin, which is provided on a surface of the main occlusal element, and when the main occlusal element is engaged, both of the auxiliary occlusal elements are brought into a compressed state with flexible deformation of required parts by the control stopper. 3. A main occlusal element consisting of mutually interlocking male and female claws formed of flexible thermoplastic synthetic resin, and a pair of left and right protrusions adjacent to each of the main occlusal elements within a range that does not interfere with occlusion. The occlusal auxiliary element on at least one main occlusal element side is such that the tip of the occlusal auxiliary element on the other main occlusal element side slopes inward immediately before the main occlusal element starts occlusion. It has an expanded shape so as to be located on the surface, and a main occlusal element consisting of a female nail is arranged on one side of the expanded shape, and a main occlusal element consisting of a female claw is arranged
It is made of a highly flexible resin material, and a main occlusal element consisting of a male claw is disposed on the other occlusal auxiliary element side, and is made of a highly rigid resin material, so that when the main occlusal element intersects, both of the occlusal aids are provided. A synthetic resin fastener in which the elements are pressed together with flexible deformation of the required parts. 4. Claim 1, wherein each of the one and the other occlusal auxiliary elements has a different color under conditions where they can be visually recognized.
- Synthetic resin fastener according to 3.