JPS6121338A - Catch for packaging - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a packaging fastener for joining an upper packaging box and a lower packaging box made of, for example, cardboard.

Conventional Structure and Problems Generally, a packaging box for heavy goods is divided into an upper box 1 and a lower box 2 made of cardboard, as shown in FIG. 7, to facilitate manufacturing of the packaging box. The upper box 1 and the lower box 2 are bound and packed with a string-like body 3, but there is a problem that the string-like body 3 stretches and loosens. Further, if the string-like body 3 is cut when unpacking, the string-like body 3 cannot be reused. Therefore, the present applicant first applied for Utility Application No. 58-. He came up with an idea called No. 84331. below,
The invention that is the premise of the present invention will be briefly explained.

FIG. 8 to FIG. 11 show a packaging fastener which is the premise of the present invention.

In the same, the packaging stopper consists of a base body 5 and a key body 6. The base body 5 includes a cylindrical portion 7 and a cylindrical portion 7.
The hook member 1o is composed of a flange 8 provided on one end edge and a pair of hook members 10.degree. 10 has a locking portion 11 made of a hole.

The key body 6 is formed into a rod shape, and has push-open bodies 12 at both ends thereof having a width that fits the cylindrical part 7 of the base body 6. connected by. On both sides of the key body 6 are provided locking portions 14 which are protrusions that can be engaged with the locking portions 11 of the hook members 10 and 10, and have bent pieces 15 protruding from the ends. Each of these constituent members is made of flexible and bendable polypropylene.

As shown in FIG. 10, the packaging stopper with the above structure has the cylindrical portion 7 of the base body 5 inserted into the communicating holes 18 and 19 of the plate body 16 of the upper box and the plate body 17 of the lower box which are stacked on top of each other. Insert the key body 6, then bend the key body 6 at its connecting piece 13, and press open the key body 12.
is inserted into the cylindrical portion 7 of the base body 5. At this time, the push-opening body 12 of the key body 6 presses the hook member 10.10, and the hook members 10, 10 rotate about the hinge part 9 as a rotation fulcrum, and the tip end piece opens the opening of the inner hole 19. Engage with the edge.

And the collar part 8 of the base body 5 and the hook member 10.10
Tighten the two plates 16 and 17 with. However, the structure described above has the following problems.

As shown in FIG. 11, when a load is applied to the plate 16 and 1 for some reason in the direction of the arrow, the hook member 10
&j, it tries to rotate using the hinge part 9 as a fulcrum, but since the hook member 10 is fixed by the push-opening body 12,
Deforms elastically. This elastic deformation occurs around the end 19 of the contact surface between the hook member 10 and the push-open rest 12, and therefore, a load is applied to the end 19 in the direction of arrow B. Due to the component force of this load B (arrow C), the push-opening body 12 receives force in the direction of being pushed out from the cylindrical part, and in some cases, the locking part 1
1.14 was sometimes lost.

Furthermore, when removing the main packaging stopper from the plate bodies 16 and 17, the grip piece 15 is pinched and pulled up, but the grip piece 15 made of a flat plate has the problem of being difficult to grip and furthermore difficult to pull out.0 Invention Purpose of the present invention In view of the above-mentioned conventional problems, the present invention provides a method for combining an upper box and a lower box,
The purpose of the present invention is to provide a packaging fastener that facilitates unpacking, does not easily come off even if an unexpected load is applied to the upper and lower boxes in the combined state, and is reusable. do.

In order to achieve the object before construction of the invention, the present invention is fitted into a hole in a packaging box, and a hook member provided in a cylindrical part via a hinge is hooked onto the edge of the hole, so that the flange of the cylindrical part and the hook member are connected to each other. a base body that is clamped and fixed with, and inserted into a cylindrical part of the base body,
It consists of a cylindrical key body with a bottom and a push-opening body for pushing and expanding the hook member, the base body and the key body are connected, and the bent part of the hook member is attached to the side of the push-opening body from the outside. It is configured as a packaging stopper that is provided with a locking part that engages, and in addition to functioning as a stopper member,
This has the effect that it can be easily attached and detached, and that the attached state is stable.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 5.

In the figure, the packaging stopper is a base body 21 and a key body 22.
It is becoming more and more. The base body 21id has a cylindrical portion 23, a flange portion 24 provided at one end edge of the cylindrical portion 23, and a pair of rectangular cross-sections connected to opposing inner walls of the cylindrical portion 23 via hinge portions 25, respectively. hook member 26.26. Further, the key body 22 is connected to the base body 21.
The width is compatible with the cylindrical portion 23 of the cylindrical portion 23 .
It has a slightly longer bottomed cylindrical push-opening body 28, and this push-opening body 28 has a protrusion on both sides of its tip.
It has a portion 27 integrally. The key body 22 is connected to the base body 21 by a connecting piece 29, and a pull-out hole 3o is bored in the bottom. Each of these constituent members is made of flexible and bendable resin such as polypropylene.

As shown in FIG. 4, the packaging fastener with the above structure first inserts the cylindrical portion 23 of the base body 21 into the communicating holes 33 and 34 of the plate body 31 of the upper box and the plate body 32 of the lower box which are stacked on top of each other. insert. Next, the key body 22 is bent at the connecting piece 29, and the push-open body 28 is inserted into the cylindrical part 23 of the base body 21.

At this time, the push-open body 28 of the key body 22 is pressed against the base body 2.
1 hook member 26.26, the hook member 2
6.26 rotates using the hinge portion 26 as a rotation fulcrum, and the tip piece engages with the rim of the inner hole 34. And base body 2
The two plates 31, 32 are tightened by the one collar 24 and the hook members 26, 26.

In this state, the locking portion 27 formed at the tip of the push-open body 28 of the key body 22 engages with the bent portion of the hook member 26 from the outside, and the key body 22 is fixed to the base body 21.

A sectional view of the main part in this state is shown in FIG.

In the figure, if a load is applied to the plates 31 and 32 in the direction of arrow A, the hook member 26 tries to rotate around the hinge part 25, but since the hook member 26 is fixed by the push-opening body 28, , deforms elastically. This elastic deformation occurs around the end 33 of the contact surface of the hook member 26 with the push-opening body 28, and therefore, the end 33 receives a force in the direction of arrow B, and this force (arrow C) causes the push-opening body to open. The body 28 tries to be pushed out from the cylindrical part 23, but since the hook member 26 is elastically deformed so as to slip under the locking part 27, the engagement of the locking part 27 is further strengthened, and it is easily pushed open. The body 28 is not pushed out from the cylindrical portion 23. This packaging stopper can be easily released by inserting a finger into a pull-out hole 30 formed at the bottom of the key body 22 and pulling it, and is reusable. In this embodiment, the locking portion 27 is shaped like a protrusion, but it may be hook-shaped as shown in FIG. 6, or may have other shapes.

Effects of the Invention As is clear from the description of the embodiments above, the packaging fastener of the present invention is capable of packaging by stacking the key body on the base body and inserting the push-open body into the cylindrical part of the base body. It can function as a connector for boxes, is easy to attach and detach, is reusable, and is stable in its attached state, and has great practical value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a packaging fastener according to an embodiment of the present invention;
Figures 2 and 3 are a plan view and a front sectional view of the packaging fastener, Figure 4 is a side sectional view showing the packaging fastener in an attached state, and Figure 5 is an enlarged view of the main parts. Fig. 6 is a side sectional view showing other shapes of the locking part, Fig. 7 is a perspective view of a conventional packaging body, and Figs. 8 and 9 are other conventional packaging stops. A perspective view and a front sectional view of the tool, FIG. 1o is a side sectional view showing the mounting state and state of a conventional packaging fastener, and FIG. 11 is an enlarged view of the main part thereof. 21--base body, 22--key body, 23--cylindrical part, 24-flange part, 25--hinge part, 26--hook member, 27--locking part, 28--push-open body , 29
- Connecting piece, 30 - Pull-out hole. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 7 Figure 8 Figure 9

Claims (2)

[Claims] (1) A base body comprising a cylindrical part, a flange provided at one end of the cylindrical part, and a pair of hook members connected to opposing inner walls of the cylindrical part via hinge parts, respectively; The bent portion of the hook member is formed into a bottom cylindrical shape and includes a key body whose body portion can be inserted into the cylindrical portion of the base body, and when the key body is inserted into the cylindrical portion of the base body. A packaging fastener comprising a locking portion near the front edge of the cylindrical portion of the key body, which is secured from the outside of the bent portion while overcoming the curved portion. (2) The packaging fastener as set forth in claim 1, wherein the key body is formed in the shape of a cylinder with a bottom, and a pull-out hole is formed at the bottom of the key body.