JPH0681925U - Joint member - Google Patents

Abstract

(57) [Abstract] [Purpose] A joint member that can be attached to the side wall mating part such as a desk tray with one touch by pinching both male and female pieces connected in series through the connecting part. [Structure] At least one of them is made of an elastic material via a thin connecting portion (30) formed between the second short side (21b) of the male piece and the inner surface side of the tip of the second leg (12b) of the female piece. One female piece (10) and one male piece (20)
Are connected, and the female pieces are the short sides (11a), (11) of the rectangular main plate (11).
From b), the first leg (12a) and the second leg (12b) are connected to the main plate substantially vertically, and at least the protrusion (13) is provided on the inner surface side of the first leg opposite to the connecting portion, The male piece is the first short side of the rectangular main plate (21).
The leg (22) is connected to the main plate from the first short side of the (21a) and the second short side (21b) at least on the side opposite to the connecting portion, and the recess (23) is formed on the outer surface side of the leg. ), The male piece both legs or one leg and the second short side enter into the female piece both legs by the rotation around the connecting portion, and the projections and the recesses thereof are elastically engaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is designed to fasten together the overlapping portions of the side wall edges at the corners of desk trays and boxes, which are mainly made of cardboard or fiberboard, or fasten paper pieces in a book shape at one end. The present invention relates to a joint member that is used after being used.

[0002]

[Prior art]

 Conventionally, a typical joint member of this type has a structure including a male piece in which a male screw rod leg is extended from the head and a female piece in which a female screw cylinder leg is extended from the head. . Then, this joint was used by a method in which a circular hole was punched in the overlapping portion of the side wall of the desk tray, the female piece was inserted into the circular hole, and the male piece was screwed.

[0003]

[Problems to be solved by the device]

 Therefore, in this type of conventional joint member, for example, two round holes must be drilled in each of the four corners of the tray, etc., and a total of eight joint members must be screwed, which makes tray assembly inefficient. It was a thing. Moreover, it was not always easy to form a female screw on the inner peripheral surface of a plastic cylindrical leg, which is relatively small in size.

Therefore, an object of the present invention is to solve the problems that the conventional joint members have, that is, to facilitate the production and use of the joint and to improve the workability of assembling the desk tray and the like. In order to achieve this, insert one female piece across the opposite through hole and notch at the seam of each corner or side wall of the desk tray or cardboard box, and press one male piece against the female piece. It is possible to engage elastically and both male and female pieces are integrally connected by a thin connecting part, so that both male and female pieces must be paired when assembling a tray etc. The point is to provide a joint member configured to be supplied to the hands of workers.

[0005]

[Means for Solving the Problems]

 The outline of the present invention for achieving the object will be described with reference to FIGS. 1 to 4 corresponding to the embodiments. The joint member of the present invention is integrally connected through a thin connecting portion (30). It consists of a female piece (10) and a male piece (20), and the female piece (10) is formed from both short sides (11a), (11b) of a rectangular main plate (11) to a first leg (12a) and a second leg. (12b) is integrally and substantially vertically connected to the main plate (11), and at least the tip of the leg is on the inner surface side of the first leg (12a) on the side opposite to the connecting portion (30). The height gradually increases from the side toward the leg base, and a protrusion (13) having a locking step (13a) substantially perpendicular to the inner surface of the leg is formed at the end of the leg base side. ) Is a leg from the first short side (21a) of the first side (21a) and the second short side (21b) of the rectangular main plate (21) at least on the side opposite to the connecting part (30). (22) is integrally and substantially vertically connected to the main plate (21), and a leg base is provided on the outer surface side of the leg (22). From the end of the leg to the tip of the leg, a recess (23) having a locking step (23a) substantially perpendicular to the outer surface of the leg is formed at the end of the tip of the leg, and the connecting portion (30) is formed. , Formed between the second short side (21b) of the male piece (20) and the inner surface of the distal end of the second leg (12b) of the female piece (10). , (20) at least one piece is formed of an elastic material, by turning both pieces around the connecting portion (30) in the mutually approaching direction, both legs (12a) of the female piece (10), (12b) Both legs (22), (22) or one leg (22) of the male piece (20) and the second short side (21b) enter into the inner surface, and the protrusion (13) of the leg of the female piece and the male The recesses (23) of one leg are elastically engaged.

An elastic synthetic resin such as polypropylene is a suitable example of the elastic material. After attaching to a corner of a tray, etc., each part of both male and female pieces (10) and (20) should be provided with appropriate thickness to give appropriate rigidity so that they will not be easily separated. Is desirable.

The main plates (11) and (21) of both male and female pieces or either one have a shape that extends slightly outward from the first short side to cover the outer edge of the through hole at the corner. Is desirable.

[0008]

[Action]

 Since the present invention has such a structure, the female piece (10) is applied to, for example, the inner surface of the side wall overlapping portion at the corner portion, and one through hole, for example, a rectangular square hole is bored at the portion. Insert the first leg (12a) of the female piece into the, and put the second leg (12b) into the notch formed in the side wall edge corresponding to the square hole, and attach the thin connecting part (30). By rotating the male piece (20) toward the female piece as a center, the male piece legs (22), (22) or one leg (22) and the second short side (21b) are moved to the female piece legs. It may be used by pushing it between (12a) and (12b).

Therefore, in the joint member of the present invention, the leg outer surface of the male piece (20) slides into the inner surface of both legs of the female piece (10) while elastically deforming, and the protrusion ( 13) will snap-fit into the recess (23) in the leg of the male piece. This fitting posture is kept stable by the contact between the locking step portions (13a), (23a) perpendicular to the leg pieces. As a result, even if an external force in the direction of separating the male and female pieces is applied, there is no risk of the male and female pieces separating. As described above, the joint member of the present invention is not only easy to manufacture due to its simple shape, but also the mounting operation can be performed with one hand while maintaining the overlapping state of the side walls with one hand. Therefore, it is possible to improve work efficiency in assembling a desk tray or the like.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a first embodiment of the present invention, in which FIG. 1 shows a desk tray (T) assembled using the joint member of the present invention, and FIG. FIG. 3 shows the operation of attaching the joint to the overlapping portion at the end of the side wall (S) of the tray (T).

As is apparent from FIGS. 2 and 3, the female piece (10) made of an elastic material has a long rectangular shape (for example, a strip shape whose long side is sufficiently long with respect to the short side) on both short sides ( From 11a) and (11b), first and second legs (12a) and (12b) are vertically and integrally connected to the main plate (11), respectively. Height gradually increases from the base to the base of the leg, and at the end on the side of the base of the leg, a sawtooth-shaped or “L” -shaped protrusion (13) having a locking step (13a) perpendicular to the inner surface of the leg is formed. .

Similarly, the male piece (20) also made of an elastic material is composed of a pair of legs (22) from the first and second short sides (21a), (21b) of the elongated rectangular main plate (21). (22) are vertically and integrally connected to the main plate (21), and the depth is gradually increased from the base of the leg toward the tip of the leg on the inner surface of the leg (22). A saw-toothed or "re" -shaped recess (23) having a locking step (23a) perpendicular to the inner surface of the leg is formed. This recess (23) is complementary to the projection (13) of the female piece (10). The distance between the outer surfaces of both legs of the male piece (20) shall be slightly smaller than the distance between the inner surfaces of both legs of the female piece (10), and the distance between the inner surfaces of both legs of the male piece (10) should be the through hole (K1) and notch (described below). It is slightly larger than the distance between the opposite edges of K2).

Another important feature of the present invention is that the second short side (21b) of the male piece (20) is thinly connected to the inner surface of the tip of the second leg (12b) of the female piece (10). The point is that they are integrally connected via the part (30).

For example, when the tray is attached to the corner (corner), the downward opening of the joint member in which both male and female pieces have an inverted V shape as shown in FIG. Fitting on the side wall, the female piece (10) is positioned inside the side wall overlapping portion. Then, insert the first leg (12a) of the female piece (10) into a through hole (K1) drilled in the site, for example, a rectangular square hole, and make a recess in the side wall edge corresponding to the square hole. Put the inner surface of the second leg (12b) on the notch (K2) provided, and attach the male piece (20) around the thin joint (30) as shown by the arrow R in (a) of FIG. The male piece both legs (22), (22) are pushed into between the female piece both legs (12a), (12b) by rotating them toward the female piece. Specifically, the main plate (11) of the female piece is supported by the ball of the finger, etc., while the main plate (21) of the male piece is pressed by the other finger, the protrusion (13) on the inner surface of the leg of the female piece. The male pieces are inserted while the outer surfaces of the distal end portions (24) of both legs slide on the surface or the surface in the vicinity thereof. At this time, the legs of the female piece are elastically deformed outward and the legs of the male piece are elastically deformed inward a little, so that the tip portion (24) can get over the top of the projection (13).

As a result, as shown in (b) of FIG. 3, the projections (13) of both legs of the female piece are elastically fitted into the recesses (23) of the both legs of the male piece, but the locking step (13a). ) And the back surface of the main plate (11) is slightly larger than the thickness of the tip (24) in the leg length direction, the tip (24) moves to the gap (14). Since it is housed exactly, the fitting posture of both male and female pieces becomes extremely stable, and there is no risk of the joint member being displaced in any of the up, down, left and right directions.

As a result, the double side wall portion (N) between the through hole (K1) and the notch (K2) was firmly clamped by the main plates (11) and (21) of both male and female pieces from both front and back surfaces. It becomes a state. The female piece (10) has an outward extension (15) formed at the tip of the first leg (12a) opposite to the connecting portion (30), so that the through hole (K1) is As far as the outer surface of the tray is concerned, it has a completely shielded view, and the upper surface of the second leg (12b) of the female piece (10) on the side of the connecting portion (30) is a side wall (S) so that it is flush with the upper edge. Since this is done, it is desirable not only to eliminate the risk of other objects or the tips of the items stored in the tray being caught in the joint part, but also to be aesthetically pleasing.

The joint member according to the second embodiment shown in (a) and (b) of FIG. 4 corresponding to (a) and (b) of FIG. 3 has the same structure as that of the first embodiment. Compared to this, it is simpler and easier to manufacture by injection molding. That is, in the female piece (10) in this example, the second leg (12b) on the side of the connecting portion (30) has a flat inner surface without the protrusion (13), and accordingly, the male piece (20). ) Also omits the leg on the side of the connecting part (30). In other words, in this example, the second short side (21b) of the male piece (20) is connected to the inner surface on the distal end side of the second leg (12b) of the female piece (10) via the connecting portion (30). It is similar to the first embodiment, but no leg is extended from the second short side (21b) of the male piece. Further, the other second leg (12b) of the female piece (10) is not provided with the outer extension portion (15) at the tip thereof as in the first embodiment. The joint member of this example is also fitted from the upper end of the side wall as shown in (a) of FIG. 4, and the lower parts of both pieces are sandwiched in the direction of arrow R to be attached to the side wall at the corner of the tray as shown in (b) of the figure. You can

In the above embodiment, the second leg (12b) on the side of the connecting portion (30) is shown as projecting from the female piece (10), but this second leg (12b) is the female piece. It may be projected from the (20), in which case the connecting portion (30) is naturally formed at the connecting portion between the second leg and the female piece (10). However, the connecting portion (30) may be formed in the middle portion of the second leg (12b), or may be formed in a portion that is biased to either side of both the pieces (10) and (20). In short, the connecting part (30) may be formed on the connecting side of both pieces (10), (20) so that they can be opened and closed.

Although it has such a simple structure, its mounting posture is extremely stable as in the case of the first embodiment. That is, in the through hole (K1), the first leg (12a) of the female piece (10) and the leg (22) of the male piece (20) are firmly attached by the engagement of the protrusion (13) and the recess (23). Since the second leg (12) of the female piece (10) is fitted into the notch (K2) at the upper edge of the side wall, it may be displaced in any of the up, down, left and right directions. Absent. Therefore, as long as the connecting portion (30) has a sufficient wall thickness of, for example, about 1 mm, that is, a sufficient strength, there is no possibility that the joint member once attached will come off from the tray or the like during use.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and has the above-mentioned constitutional requirements and has the above-mentioned object. It can be modified appropriately within the range where the following effects are achieved. For example, a concave portion should be formed on the inner surface of both female legs in place of the "Le" -shaped projection, and a corresponding protrusion should be formed on the outer surface of both male legs in place of the "Le" -shaped depression. In that case, there is no difference in action and effect from the first and second embodiments described above.

[0021]

[Effect of device]

 As is apparent from the above description, the present invention provides a join member having an extremely simple and rational structure in which protrusions and recesses that can be elastically fitted to each other are formed on the inner and outer surfaces of the legs of both male and female pieces. Therefore, not only is it easy to manufacture and the cost is low, but also when used, it can be mounted with one touch simply by pinching the male and female pieces facing each other, and the practical effect is remarkable. In particular, since both male and female pieces are integrated at the connecting part, one operator can overlap the side walls with one hand and easily attach the joint member with the other hand. That is, the inefficiency that one worker keeps the side wall in the required stacking posture and another worker positions one piece with one hand and pushes the other piece with the other hand is eliminated. it can. Another advantage of the joint member of the present invention is that it eliminates the trouble of finding a male piece that fits the female piece because both pieces are always in pairs and are at hand.

[Brief description of drawings]

FIG. 1 is a perspective view showing a use state of a joint member according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a method of using the same.

FIG. 3A is a sectional view showing a state during a mounting operation, and FIG. 3B is a sectional view showing a state after mounting.

4A and 4B are sectional views showing a second embodiment corresponding to FIG.

[Explanation of symbols]

 (10) Female piece (11) Main plate (11a) Short side (11b) Short side (12a) First leg (12b) Second leg (13) Protrusion (13a) Lock step (20) Male piece (21) Main plate (21a) First short side (21b) Second short side (22) Leg (23) Recess (23a) Locking step (30) Connecting part

Claims (1)

[Scope of utility model registration request] 1. A female piece (10) and a male piece (20) which are integrally connected via a thin connecting portion (30), the female piece (10) being a rectangular main plate (11). From the short sides (11a), (11b), the first leg (12a) and the second leg (12b) are integrally and substantially continuously connected to the main plate (11),
At least on the inner surface side of the first leg (12a) on the side opposite to the connecting portion (30), the height gradually increases from the leg tip side toward the leg base, and the inner surface of the leg at the terminal end on the leg base side. A protrusion (13) having a locking step (13a) substantially perpendicular to is formed,
The male piece (20) has at least a first short side (21a) and a second short side (21b) of the rectangular main plate (21) opposite to at least the connecting portion (30). The legs (22) are connected to the main plate (21) substantially vertically from 21a) and the depth is gradually increased from the leg base side to the leg tips on the outer surface side of the legs (22). A concave portion (23) having a locking step portion (23a) substantially vertical to the outer surface of the leg is formed at the end of the side, and the connecting portion (30) is the second portion of the male piece (20).
It is formed between the short side (21b) and the inner surface of the tip of the second leg (12b) of the female piece (10), and at least one of these pieces (10), (20) is made of an elastic material. Both legs of the male piece (20) are formed on the inner surfaces of the legs (12a), (12b) of the female piece (10) by rotating both pieces around the connecting portion (30) in a direction toward each other.
2), (22) or one leg (22) and the second short side (21b) are inserted, and the protrusion (13) of the leg of the female piece (10) and the recess (23) of the leg of the male piece (20) are inserted. ) And a joint member configured to elastically engage with.