JPH088989Y2 - Assembled box corner connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a corner connection of a prefabricated box in which opposite edges of side plates flexibly connected to respective edges of a bottom plate are detachably connected to each other. It is about ingredients.

(Prior Art) Conventionally, there has been a box in which side plates are attached to four edges of a rectangular bottom plate and these are raised to be connected to each other to form a box. As the connecting structure, a hook hole is provided on one side plate and a hook member is provided on the other side plate, and the two are joined to assemble the box body. When the box is disassembled, the hook member is pressed in the dissociation direction with the fingertip. (For example, JP-A-2-57552, JP-A-61-166914).

That is, as shown in FIG. 8, a side plate 2 formed in a rectangular or square shape is rotatably connected to each edge portion of a bottom plate 1 formed in a rectangular or square shape, and adjacent side plates 2a are formed. , 2b, the first connecting tool 10 and the second connecting tool 20 which can be engaged and disengaged from each other are attached to the upper portions of the opposite edges.

The first connector 10 is made of a plastic material such as polypropylene as follows. That is, a hook hole 12 that penetrates in the thickness direction and widens in a stepwise manner on the outer surface side in the upper and lower portions on the opposite edge side of the flat plate-like main body 11, and a rectangular recess linearly extending from the inner surface side to the outer surface side. Shaped mating recess 13
To form.

On the outer surface side of the main body (11) where the hook hole (12) is located, a thin-walled and tongue-shaped insertion piece (14) is formed to project laterally outward. The insertion piece 14 has its connecting base portion locally formed thin and can be bent inward toward the main body 11 about the connecting base portion.

At the center of the insertion piece (14), there is formed a semi-disc shaped locking piece (16) whose base side is opened by an arcuate slit (15) curved from the left side to the right side. The locking piece 16 has its open end 16a protruding outward from the reference surface of the insertion piece 14, and has a cam 16b on its inner surface side as shown in FIG.
Are formed to project inward.

In addition, 17 and 18 are connecting protrusions that are formed to project toward the facing edge side and the upper edge side of the main body 11, or one of the adjacent side plates.
It is to be fitted to the opposite edges of 2a and connected by rivets 19.

In addition, the above-mentioned second connector 20 is formed of the same material as the first connector 10 as follows.

That is, a rectangular guide groove 22 having an opening on the opposite edge side is formed inside the flat plate-shaped main body 21.

The guide groove 22 is formed in an area and a width in which the insertion piece 14 described above is loosely fitted.

A hook projection 24, which is divided by a pair of upper and lower slits 23, 23 extending from the right end toward the left in FIG. 8, is formed at an intermediate portion in the vertical direction of the inner wall of the main body 21 forming the guide groove 22.

As shown in FIG. 9, the hook projection 24 is projected rightward from the facing edge of the main body 21, and a claw 24a that bends outward is formed at the protruding end portion. The claw 24a is the above-mentioned first connecting tool.
It can be engaged with and disengaged from 10 hook holes 12.

In addition, a plate-like projection that fits in the fitting recess 13 of the first connector 10 described above on the lower portion of the main body 21 located below the claw 24a.
25 is formed so as to project rightward.

Further, a circular locking hole 26 is formed in the center of the outer wall of the main body 21 forming the guide groove 22 described above. This locking hole 26,
When the insertion piece 14 of the first connecting tool 10 is inserted into the guide groove 22 most deeply, the locking piece 16 is formed in such a position and size as to be fitted from the inner surface side.

Reference numerals 27 and 28 denote connecting protrusions formed on the opposing edge side and the upper edge side of the main body 21 so as to be fitted to the opposing edge portions of the adjacent one side plates 2b and to be coupled by the rivets 29.

Then, each side plate 2 is erected and the insertion piece of the first connector 10 is inserted.
When 14 is fitted in the guide groove 22 of the second coupling tool 20, the locking piece 16 is fitted and locked in the locking hole 26, and at the same time, the hook projection 24 is moved toward the outer surface, as shown in FIG. The claw 24a is elastically restored and the claw 24a is fitted and locked in the hook hole 12, thereby preventing the right side plate 2a in FIG. 10 from expanding to the right.

In addition, as shown in FIG. 9, the fitting recess of the first connector 10
The protrusion 25 of the second connector 20 is fitted to 13 to prevent the left side plate 2b in FIG. 10 from expanding upward. As a result, the engaging force in the two directions of the first and second connecting tools is increased, and the side plates 2a and 2b can be firmly connected.

(Problems to be solved by the invention) However, since the hook member protrudes only slightly from the side plate, it is difficult for the finger to hang it and the disassembling operation is troublesome.
Also, if the hook member is large enough to be easily operated, the tip of the hook member may protrude significantly outward from the side plate when the box is assembled, which may be an obstacle when arranging or stacking the boxes. It was

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention rotatably connects side plates to each edge of the bottom plate, and can be engaged with and disengaged from each other at the upper portions of the adjacent opposite edges of each side plate. Female connector and male connector are provided,
The female connector is provided with a hook hole at the opposite edge of the plate-shaped main body that penetrates in the thickness direction and the outer surface side expands stepwise, and the male connector is opposed to the plate-shaped main body. A hook protrusion engageable with the hook hole is provided at an edge portion, and a protruding end portion of the hook protrusion is formed with a claw that bends to the outer surface side of the side plate on the male connector side, and the root of the claw is connected to the male connector. It is exposed on the outer surface side of the side plate.

(Operation) When each side plate is raised from the bottom plate, the male connector and the female connector are connected between the end portions of the adjacent side plates to form a box. To disassemble the assembled box, the claw roots of the male connector are exposed on the outer surface of the side plate on the male connector side. Even if the pressing operation is not performed, the claw provided on the back surface of the side plate is released, and the connection between the adjacent side plates is released.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. In addition, among the reference numerals attached to FIGS. 1 to 7, the portions having the same reference numerals as those in FIGS. 8, 9, and 10 described above have substantially the same structure, and therefore the description thereof will be omitted. Omit it.

In FIGS. 1 to 3, 30 is one side plate adjacent to each other.
A female connector attached to the upper end of 2a.

The female connector 30 is formed of a plastic material such as polypropylene as follows.

That is, the hook holes 32 and the pair of guide recesses 33, 34 are formed in the vertical direction on the opposite edge side of the flat plate-shaped main body 31.

As shown in FIG. 1 and FIG. 3, the hook hole 32 is formed by penetrating a rectangular long hole which is long in the vertical direction in the length direction, and expanding the outer surface side in a stepwise manner toward the end. Hook part 32a
Has been formed.

Further, the guide recesses 33, 34 are located close to the upper and lower portions of the hook hole 32, and are formed in a tapered shape in which the inner surface side is reduced toward the outer surface side as shown in FIG. The guide recess 33 is elongated in the vertical direction, and the lower guide recess 34 is formed in a square shape.

In addition, 35 and 36 are connecting protrusions formed to project toward the facing edge side and the upper edge side of the main body 31, and one side plate adjacent to each other.
It is for fitting with the opposite edges of 2a and connecting them with rivets 37 (FIGS. 6 and 7).

Further, in FIGS. 4 and 5, reference numeral 40 is a male connector attached to the upper end portion of the other adjacent side plate 2b.

The connector 40 is made of the same material as the female connector 30 described above and is formed as follows. That is, the hook protrusions 43 and the pair of guide protrusions 44 and 45 are formed on the opposite edges of the flat plate-shaped main body 41 so as to be arranged vertically. These hook projections 43 and guide projections 4
4, 45 are arranged so as to correspond to the hook holes 32 and the guide recesses 33, 34 described above.

In FIG. 4, the hook projection 43 is divided by a pair of upper and lower slits 42, 42 extending from the right end to the left end, and the right end is projected rightward from the facing edge of the main body 41. A claw 43a that is bent outward is formed on the. The claw 43a can be fitted into the hook hole 32 of the female connector 30 described above, and the hook portion 32 is located at the position shown by the solid line in FIG.
Engages with a, moves to the position indicated by the alternate long and short dash line, and is released. That is, the claw 43a, the root portion is exposed on the outer surface between the main body 41 and the hook portion 32a, by pressing the root portion,
From the position indicated by the solid line to the position indicated by the alternate long and short dash line, the engagement is released.

Further, the guide protrusions 44, 45 are formed at a vertically approaching position of the hook protrusion 43 so as to protrude outward from the facing edge of the main body 41 and to be tapered toward the outer side. The upper guide protrusion 44 is elongated in the vertical direction, and the lower guide protrusion 45 is formed in a square shape. The upper guide protrusion 44 can be inserted into and removed from the upper guide recess 33 of the female connector 30, and the lower guide protrusion 45 can be inserted into and removed from the lower guide recess 34 of the female connector 30.

In addition, reference numerals 46 and 47 denote connecting projections formed so as to project toward the facing edge side and the upper edge side of the main body 41, and the other adjacent side plate.
It is for fitting with the rivet 48 (Figs. 6 and 7) by fitting it to the opposite edges of 2b.

According to the above-mentioned embodiment, when each side plate 2 (2a, 2b) is erected and the female connector 30 is pushed toward the male connector 40, as shown in FIG. 6 and FIG. The hook protrusion 43 and the guide protrusions 44 and 45 are fitted into the hook hole 32 of the female connector 30 and the guide recesses 3334. In this case, each guide protrusion 44,
Since 45 is tapered and contracted toward the tip, the guide recesses 33 and 34 are fitted smoothly, and the hook hole 32 is smoothly guided toward the hook protrusion 43.

When the guide recesses 33, 34 are fitted to the bases of the guide protrusions 44, 45, as shown in FIG. 7, both are tapered and there is no rattling. It prevents the side plate 2b of the
At the same time, the hook projection 43 elastically returns to the outer surface in the hook hole 32, and its claw 43a engages with the hook portion 32a of the hook hole 32 as shown in FIG. The side plate 2a of) is prevented from expanding to the right.

As a result, the female connector 30 and the female connector 40 have an increased bidirectional engaging force, and the side plates 2a and 2b can be firmly connected to each other.

Further, as shown by the phantom line in FIG. 6, when the hook projection 43 is pressed from the outer surface to the inner surface by a finger to elastically deform in the inner surface, the claw 43a is separated from the hook portion 32a of the hook hole 32, When one side plate 2a is rotated to the right in the figure, the hook hole 32, the guide recesses 33 and 34 are engaged with the hook protrusion 43, and the guide protrusions 44 and 45.
Then, the female connector 30 and the male connector 40 are disengaged from each other at a stretch, and thus the side plates 2a and 2b can be disconnected.

(Effects of the Invention) As described above, according to the present invention, in the state where the claw, which is the male connector that bends in the outer surface direction, is fitted into the hook hole, which is the female connector whose outer surface side is expanded stepwise, Since the root is exposed on the outer surface of the side plate on the male connector side, in order to release the connection by the male connector, it suffices to press the exposed root part of the nail, and it is not necessary to touch the nail directly, so engage it. Easy to solve.
Moreover, since the male connector does not have to be projected to the outside greatly, there is an effect that the structure is simplified.

[Brief description of drawings]

FIG. 1 is a side view of a female connector showing an embodiment of the present invention, and FIG.
Fig. 3 and Fig. 3 are II-II and III-III sectional views thereof, Fig. 4 is a side view of the male connector, Fig. 5 is a VV enlarged sectional view thereof, and Figs. Sectional views corresponding to Figures and 10, Figure 8 is a plan view of the unfolded box, Figures 9 and
FIG. 10 is a sectional view taken along the line IX-IX and XX. 1: bottom plate, 2: side plate, 2a: one adjacent side plate, 2b: another adjacent side plate, 30: female connector, 31: main body, 32: hook hole, 32a: hook portion, 33, 34: guide recess , 35, 36: connection protrusion, 37: rivet, 40: male connector, 41: main body, 42: slit, 43: hook protrusion,
43a: claw, 44, 45: guide protrusion, 46, 47: connecting protrusion, 48: slit.

Claims (1)

[Scope of utility model registration request] 1. A side plate is rotatably connected to each edge of the bottom plate,
A female connector and a male connector, which can be engaged with and disengaged from each other, are provided on the upper portions of the opposed edges of the side plates adjacent to each other, and the female connector penetrates in the thickness direction at the opposed edges of the plate-shaped main body. In addition, a hook hole whose outer surface expands in a stepwise manner is provided, and the male connector is provided with a hook projection engageable with the hook hole on the opposite edge of the plate-shaped main body, and the protruding end of the hook projection. A corner connector for a prefabricated box in which a claw that bends to the outer surface side of the side plate on the male connector side is formed in the portion, and the root of the claw is exposed to the outer surface side of the side plate on the male connector side.