JPH0132096B2 - - Google Patents

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, packaging boxes for heavy goods are 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 boxes. 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. Moreover, if the string-like body 3 is cut when unpacking, the string-like body 3 cannot be reused. Therefore, the applicant of the present invention previously devised a device called Utility Application No. 84331/1983. Hereinafter, 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 has a cylindrical portion 7
A flange portion 8 provided on one end edge of the cylindrical portion 7 and a hinge portion 9 on the opposing inner wall of the cylindrical portion 7, respectively.
The hook members 10, 10 are composed of a pair of hook members 10, 10 with an L-shaped cross section connected via a
It has a locking part 11 consisting of a hole on the surface thereof. The key body 6 is formed into a frame shape, and the push-open body 1 has a width that fits the cylindrical part 7 of the base body 5 at both ends thereof.
2, and is connected to the base body 5 by a connecting piece 13. On both sides of the key body 6, locking portions 14 are provided, which are protrusions that can be freely engaged with the locking portions 11 of the hook members 10, 10.
A knob piece 15 is provided protruding from the end. Each of these constituent members is made of flexible and bendable polypropylene.

As shown in FIG. 10, the packaging stopper with the above structure is comprised of an upper box plate 16 and a lower box plate 1 stacked on top of each other.
Insert the cylindrical part 7 of the base body 5 into the communicating holes 18 and 19 of the base body 5, then bend the key body 6 at its connecting piece 13, and push the open body 12 into the cylindrical part 7 of the base body 5. insert. At this time, the push-opening body 12 of the key body 6 presses the hook members 10, 10, and the hook members 10, 10 rotate about the hinge part 9 as a rotation fulcrum, so that the tip end piece opens the opening of the inner hole 19. Engage with the edge. Then, the two plate bodies 16 and 17 are tightened by the collar part 8 of the base body 5 and the hook members 10 and 10. However, the structure described above has the following problems.

As shown in FIG. 11, when a load is applied to the plates 16 and 17 in the direction of arrow A for some reason,
The hook member 10 tries to rotate about the hinge part 9 as a fulcrum, but since the hook member 10 is fixed by the push-opening body 12, it deforms elastically. This elastic deformation occurs centered on the end 19 of the contact surface between the hook member 10 and the push-open body 12, and therefore, a load is applied to the end 19 in the direction of arrow B. This load B
Due to the component force (arrow C), the push-opening body 12 receives a force in the direction of being pushed out from the cylindrical portion, and in some cases, the locking portions 11 and 14 may become disengaged.

Furthermore, when removing the main packaging stopper from the plates 16 and 17, the grip piece 15 is pinched and pulled up, but the grip piece 15 made of a flat plate is difficult to grip and pull.

Purpose of the Invention The present invention takes into consideration the above-mentioned conventional problems, and makes it easy to connect and unpack the upper box and the lower box, and even when an unexpected load is applied to the upper box and the lower box in the combined state,
To provide a packaging fastener that does not easily come off and can be reused.

Structure of the Invention In order to achieve the above object, the present invention is provided by fitting a hook member into a hole of a packaging box, and hooking a hook member provided in a cylindrical part via a hinge to the edge of the hole, so that the flange of the cylindrical part and the hook member are connected to each other. It consists of a base body that is clamped and fixed, and a cylindrical key body that is inserted into the cylindrical part of the base body and has a push-opening body for pushing and expanding the hook member, connecting the base body and the key body, The packaging stopper has a structure in which a locking part is provided on the side of the push-opening body to engage the bent part of the hook member from the outside, and the packaging stopper does not function as a stopper member. Moreover, it has the advantage 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 described based on FIGS. 1 to 5.

In the figure, the packaging stopper consists of a base body 21 and a key body 22. The base body 21 includes a cylindrical portion 23, a flange portion 24 provided at one end edge of the cylindrical portion 23, and an L-shaped cross section connected to the opposing inner wall of the cylindrical portion 23 via hinge portions 25, respectively. A pair of hook members 26, 26 are provided. Further, the key body 22 has a width that fits the cylindrical part 23 of the base body 21, and has a width that fits the cylindrical part 23 of the base body 21.
It has a push-open body 28 in the shape of a cylinder with a slightly longer bottom, and this push-open body 28 integrally has locking portions 27 made of protrusions on both sides of its tip. Further, the key body 22 is connected to the base body 21 by a connecting piece 29, and a pull-out hole 30 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 part 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 presses the hook members 26, 26 of the base body 21.
6 and 26 rotate about the hinge portion 25 as a rotation fulcrum, and the tip pieces engage with the rim of the inner hole 34. The flange 24 of the base body 21 and the hook member 2
6 and 26 tighten the two plate bodies 31 and 32.

In this state, the push-open body 2 of the key body 22
8, a locking portion 27 formed at its tip engages with a 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 same 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 the hook member 26 is fixed by the push-open body 28. Therefore, it deforms elastically. This elastic deformation occurs centering around the end 33 of the contact surface of the hook member 26 with the push-opening body 28, so that 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 the hook member 26 is elastically deformed so as to slip under the locking part 27, so the engagement of the locking part 27 is further strengthened, and the body 28 is easily pushed open. The body 28 is the cylindrical part 2
There is no way that it will be pushed out beyond 3. This packaging stopper is a drawer hole 3 drilled at the bottom of the key body 22.
It can be easily released by inserting a finger into the hole and pulling it, making it reusable. In addition, in this embodiment, the shape of the locking portion 27 is a protrusion, but the sixth
As shown in the figure, it may be hook-shaped 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 has a key body stacked on a base body,
By inserting the push-open body into the cylindrical part of the base body, it can function as a connector for packaging boxes, and it is easy to attach and detach, and it can be reused, and it is stable when attached. , its practical value is great.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a packaging fastener according to an embodiment of the present invention, FIGS. 2 and 3 are a plan view and a front sectional view of the packaging fastener, and FIG. 4 is a perspective view of a packaging fastener according to an embodiment of the present invention. FIG. 5 is an enlarged view of the main part, FIG. 6 is a side sectional view showing another shape of the locking part, and FIG. 7 is a view of a conventional packaging body. Perspective view,
8 and 9 are a perspective view and a front sectional view of another conventional packaging fastener, FIG. 10 is a side sectional view showing the conventional packaging fastener in an attached state, and FIG.
The figure is an enlarged view of the main parts. 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 ... Connection piece, 30 ... Pull-out hole.

Claims (1)

[Scope of Claims] 1. A base comprising a cylindrical portion, a flange provided at one end of the cylindrical portion, and a pair of hook members connected to opposing inner walls of the cylindrical portion via hinge portions, respectively. and a key body formed in a cylindrical shape, the body of which can be inserted into the cylindrical part of the base body, and when the key body is inserted into the cylindrical part of the base body, the hook member A packaging stopper comprising a locking part that goes over the bent part and is locked from outside the bent part near the front edge of the cylindrical part of the key body. 2. The packaging stopper according to claim 1, wherein the cylindrical key body has a bottom portion. 3. The packaging stopper according to claim 2, wherein the key body is formed into a bottomed cylindrical shape and has a pull-out hole formed at the bottom thereof.