JPH0327826Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connector for connecting a frame to be fitted around the periphery of a blackboard, whiteboard, bulletin board, etc. (hereinafter collectively referred to as a blackboard) at a corner portion. It is.

[Prior Art] Conventionally, corner connectors for edge frames of blackboards, etc., have a
It is known that insert pieces are formed at both ends of a corner member molded from a hard synthetic resin, and the insert pieces are inserted into insertion grooves at the ends of the frame for connection.

[Problems to be solved by the invention] In such a connecting tool, since the angle of the insertion piece is fixed with respect to the corner member, for example, a connecting tool formed at a right angle opening angle will not cross the edge frame at right angles. It can only be connected in a state where

However, current blackboards are not just rectangular; for example, as shown in Figure 5, they are sometimes formed into a parallelogram to match the slope of the stairs in order to be attached to the wall of a staircase. A special corner connector must be manufactured to match the angle, and if there is a discrepancy between the opening angle of the corner connector and the corner angle of the blackboard, a gap may occur at the joint between the edge frame and the corner member. This significantly reduced the product value.

[Means for Solving the Problems] Accordingly, the present invention has a structure in which the corner member 9 is formed by a bellows body that can be bent freely, and both ends of the corner member 9 are fitted into the insertion grooves 5 at the ends of the edge frame 2. Included piece 10,
10 is provided in a protruding manner to form the corner connector 8, thereby solving the problem.

[Function] Since the corner member 9 is bendable, the edge frame 2
The intersection angle can be changed freely. Therefore, a blackboard having a shape such as a parallelogram or a pentagon can be easily manufactured.

[Embodiment] In the figure, reference numeral 1 denotes a blackboard main body formed in the shape of a parallelogram, and a frame 2 is fitted on the four side edges of the blackboard main body 1. This edge frame 2 is formed by extrusion molding of aluminum material to form a U-shaped fitting groove 3 that holds the edge of the blackboard main body 1, and a substantially L-shaped fitting groove 3 is formed on the outer side of the fitting groove 3 from both left and right edges. An insertion groove 5 is formed by integrally arranging side walls 4, 4 having shapes opposite to each other.

When cutting the edge frame 2 to match the vertical and horizontal length dimensions of the blackboard main body 1, both end surfaces of the insertion groove 5 are cut into a plane 6 perpendicular to the longitudinal direction, and,
The blackboard body 1 is attached by fitting the fitting grooves 3 into the four side edges of the blackboard body 1, respectively.

Reference numeral 8 denotes a corner connector for connecting the adjacent ends of the edge frame 2, and the corner member 9 is formed of a bellows body having an opening 9a on the lower surface, and the insertion groove is formed at both ends of the corner member 9. Insert piece 1 that fits into 5
0 and 10 are integrally formed. In this case, the corner member 9 must be made of at least a soft synthetic resin, but the corner member 9 and the insert pieces 10, 10 may be integrally molded, or they may be molded as separate members and then joined together. may be equal. In the normal state, the bellows body is inserted into the insertion piece 1.
The insert pieces 10, 10 are formed in a fan shape in front so that the angles 0 and 10 are maintained at right angles, and the angle of the insert pieces 10, 10 is adjusted by expanding and contracting the outer wall 9b as shown by the chain line in FIG.

The corner connector 8 formed in this way is inserted into the insertion grooves 5, 5 of the adjacent edge frames 2, 2 with the insertion pieces 10, 1.
The edge frames 2, 2 can be connected by fitting the corner members 9 into each other and bringing both ends of the corner members 9 into close contact with the vertical surfaces 6 of each edge frame 2. Since the corner member 9 can be freely bent by expanding and contracting the outer wall 9b, it can be used by fully following the corner angle of the blackboard body 1 as long as it is in the range of about 45° to 130°. .

In this way, the corner connector 8 of the present invention can be used in a wide range of angles, so the blackboard main body 1
The frame frames 2 can be connected and fixed without any problem even if they are not only rectangular, but also parallelograms, and the slopes of the horizontal sides vary depending on the degree of slope of the stairs.

[Effects of the invention] As described above, in the corner connector of the edge frame of a blackboard, etc. of the present invention, since the corner member is formed of a bellows that can be bent freely, the angle at which adjacent edge frames intersect is It is possible to easily manufacture parallelogram blackboards and deformed blackboards such as pentagonal and hexagonal blackboards because the corner members and edges of the frame are always tightly joined. This has the effect of easily manufacturing a blackboard with high commercial value regardless of the skill level of the operator.

[Brief explanation of drawings]

The figures relate to one embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the edge frame and corner connector, Fig. 2 is a partial front view showing the state of use, and Fig. 3 is a cross-section of Fig. 2. The front view shown in Figure 4 is X-X in Figure 3.
The line sectional view and FIG. 5 are front views showing the blackboard in use. 1...Main body of blackboard etc., 2...Edge frame, 3...Fitting groove, 5
...Insert groove, 8... Corner connector, 9... Corner member, 10, 10... Insert piece.

Claims (1)

[Scope of utility model registration request] A connecting tool that connects each corner of a frame fitted to the periphery of a main body such as a blackboard, in which the corner member is formed of a freely bendable bellows body, and a difference between the edges of the frame is attached to both ends of the corner member. A corner connector for the edge frame of a blackboard, etc., which is integrally formed with a protruding insert piece that is inserted into a slot.