JPH0315349Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an assembly type whiteboard on which writing is performed using a writing instrument impregnated with water-soluble ink.

In general, with the advent of water-soluble ink writing instruments of various colors, blackboards that use chalk are also being replaced by so-called white boards that can be wiped off without producing powder.

Also, recently, whiteboard assembly sets have been adopted as educational materials for vocational and home economics classes in schools. However, conventional assembly teaching materials of this type have a large number of parts and are complex, requiring laborious work and not providing a good-looking finish.

In view of the above-mentioned circumstances, the present invention provides an assembly type white board that can be used as a teaching material and has a simple structure that is suitable for practical use.

That is, the present invention includes a white board main body, a lower aluminum frame body equipped with a powder receiving groove attached to the white board main body, three aluminum frames surrounding the white board main body, and this aluminum frame body. A right-angled metal joiner body that engages with the butt protruding corners of the board, a reinforcing plywood that is interposed in the gap between the tightening screw that fastens the aluminum frame and the white board main body, and the lower end and lower part of the reinforcing plywood. It consists of a stopper bullet piece, a gathering piece, and a support piece that fit on both ends of an aluminum frame body, which are branched into three sides, and a receiving piece with a U-shaped bag in cross section, making it easy to assemble.
Moreover, the present invention provides a practical white board that does not cause sagging after assembly.

Hereinafter, the present invention will be explained based on the drawings of embodiments.

Reference numeral 1 denotes a rectangular thin metal white board body with bent edges 2 folded at right angles on the top and left and right sides, and a white board eraser (not shown) can be placed on the bottom side of the white board body 1. A lower aluminum frame 4 forming a lower frame with a powder receiving groove 3 having a width is integrated with a rivet 5. 6, 6 are equilateral mountain-shaped side aluminum frames that serve as vertical frames for both side edges of the white board main body 1;
is an equilateral mountain-shaped upper aluminum frame that serves as an upper stile for the upper edge of the white board main body 1, and is formed from both ends of the upper aluminum frame 7 and both side aluminum frames 6, 6 ends that abut against this. A right-angled metal jointer body 9 having a chevron-shaped cross section and having engaging lips 9a at the front and rear is elastically fitted into the projecting corners 8, 8, respectively. In this case, the lower ends 6c, 6 of the aluminum frames 6, 6 on both sides
c is strongly fitted into the receiving groove stepped portion 10 protruding from the white plate side of the lower aluminum frame 4. 11 is the side aluminum frame 6
and a tightening screw that is screwed into the hole 12 of the upper aluminum frame 7 and the matching hole 12' of the bent ear part 2. Reference numeral 13 denotes a reinforcing plywood having approximately the same size as the white board, and the reinforcing plywood 13 is attached to the tightening screw 11 and the back part 1b of the white board main body.
opening 14 on the lower aluminum frame 4 side to the gap c between
It is something that can be inserted more easily. 15 is the lower aluminum frame 4
The receiving piece 15 has a U-shaped cross section and covers both end surfaces of the receiving piece 15.
At the tip thereof, there is a stopper bullet piece 16 that contacts the front side of the side aluminum frame 6, and a latch piece 17 that locks on the rear end of the same.
and a support piece 18 that receives the lower edge 13a of the reinforcing plywood 13.
It is formed by forming branches in three directions.

Next, when using this prefabricated white board, first stand up the white board body 1 with the 4 parts of the lower aluminum frame that are integrated in advance facing down (if necessary, it may be placed horizontally), and in this state. The main sides 6a, 6a, 7a of the side aluminum frames 6, 6 bent at right angles to the three sides of the white board main body 1 and the main sides 6a, 6a, 7a of the upper aluminum frame 7 are brought into contact with the front surface 1a, and the hooked sides 6b, 6b are brought into contact with the front side 1a. ,7
b is superimposed on each bent ear portion 2, 2, 2.
In this case, the lower end 6 of the main side of the side aluminum frames 6, 6
c and 6c are firmly fitted into the receiving groove stepped portion 10 of the lower aluminum frame 4 (the groove width a of the receiving groove stepped portion 10 is the sum of the thickness of the side aluminum frame 6 and the thickness of the white board main body 1). ), and the hole 12' of the bent ear part 2 and the hooked edge part 6
Match the holes 12 of b and 7b.

Here, two protruding corners 8, 8 formed by the side aluminum frames 6, 6 arranged on three sides of the white board main body 1 and the upper aluminum frame 7 with both ends abutted against the side aluminum frames 6, 6, A right-angled metal jointer body 9 is fitted into each member. This right-angled metal jointer body 9
has a 45° cut line 9b in the center of the front and a snapping curve 9c on the front, so the right-angled metal jointer body 9 fits into the projecting corner 8. At this time, the engaging lip 9a in the front position
is hung on the end faces of the main sides 6a, 7a, and the lip 9a at the back side is hung on the end faces of the hooked sides 6b, 7b and the bent tab 2. Next, the three side aluminum frames 6, 6, the upper aluminum frame 7, and the bent ears 2, 2, 2 are fixed with tightening screws 11.
In this case, the tip 11a of the tightening screw 11 may simply be made to protrude inward. Further, a hanging fitting 19 is interposed in advance at the position of the tightening screw 11 of the upper aluminum frame 7, so that the upper aluminum frame 7 is integrally attached.

Thereafter, a reinforcing plywood 13 having approximately the same size as the back surface 1b of the white board main body 1 is inserted through the opening 14 at the lower end of the lower aluminum frame 4. In this case, the thickness d of the reinforcing plywood 13 is approximately equal to the gap c between the back surface 1b of the white board main body 1 and the tightening screw 11 (Figures 3 and 4), and the tightening screw 11 is connected to the peripheral edge. is in a state where it can be strongly pressed, and one side of the white board body is pressed to form a reinforcing layer. Of course, by inserting the reinforcing plywood 13, loosening of the tightening screw 11 itself is also eliminated.

Finally, cap-shaped receiving pieces 15 are fitted to both ends of the lower aluminum frame 4, and the end faces 4 of the lower aluminum frame 4 are fitted.
A is covered to eliminate corners and also to prevent the reinforcing plywood 13 from shifting downward. That is, first, the supporting piece 18 protruding from the lower part of the tip of the receiving piece 15 is made to face the lower edge 13a of the reinforcing plywood 13, and the side latch piece 17 is hung on the rear end of the side aluminum frame 6. If the stopper bullet piece 16 bent horizontally toward the front side is fitted into the front side of the side aluminum frame 6 against this bullet,
A bag portion 15a having a U-shaped cross section formed at the base of the receiving piece 15
fits into the end surface 4a of the lower aluminum frame 4,
To obtain a white board 20 having a white board surface that does not cause deflection as a whole.

To disassemble the white board 20, follow the steps in reverse to the above, first remove the receiving piece 15, remove the tightening screw 11, and then remove the right-angled metal jointer body 9. It is divided into aluminum book frames 6, 6, 7 and a white board body 1 with a lower aluminum frame 4.

As mentioned above, the prefabricated white board of the present invention includes a white board body with bent ears on three sides, three corresponding aluminum frames, a lower aluminum frame integral with the lower end of the white board body, and two aluminum frames. By combining two orthogonally folded metal joiner bodies, multiple tightening screws (six in the illustration), two receiving pieces, and one piece of reinforcing plywood, each member can be easily installed in sequence. All that is required is an extremely simplified assembly process that only requires fixing the destination with screws in a predetermined position, fixing the corners, fitting the receiving piece with the cap, etc. Therefore, it is ideal as a teaching material for vocational and home economics classes in schools, and can be easily used even by female students. Of course,
Each member is a lightweight member with an aluminum frame, plywood, and a white board made of thin tin plate. Moreover, this white board body is framed by aluminum frames on all four sides, and four corner stops (right angle folding metal joiner bodies, receiving pieces), screws, and reinforcing plywood are attached. Once assembled, the white board becomes a white board with a solid structure without bending, which can be put to practical use immediately, and has practical effects such as being easy to disassemble.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a perspective view, Fig. 2 is a rear view, Fig. 3 is an enlarged sectional view of the main part, Fig. 4 is an exploded perspective view, and Fig. 5 is a right angle view. It is a perspective view of a folded metal jointer body. 1... White board body, 2... Bent edge, 3... Powder receiving groove, 4... Lower aluminum frame, 6... Side aluminum frame, 7... Upper aluminum frame, 8... Exit corner,
9... Right angle folded metal jointer body, 10... Receiving groove step, 11... Tightening screw, 12, 12'... Hole, 1
3...Reinforced plywood, 15...Ukekoma.

Claims (1)

[Scope of utility model registration request] A thin metal white board body with a lower aluminum frame attached to the lower end that forms a lower stile with a powder receiving groove, and an upper stile that overlaps the folded edges formed at right angles on the top and left and right sides of the white board body, vertically. Equipped with an equilateral mountain-shaped upper aluminum frame that serves as a frame and two side aluminum frames,
Insert and engage the lower ends of the aluminum frames on both sides into the receiving groove steps on the back side of the lower aluminum frame, and butt the upper ends of the aluminum frames on both sides that surround the white board body with the upper aluminum frame. A right-angle folded metal joiner body with engagement lips formed on the front and rear sides is fitted to the protruding corner, and the hook-folded sides and bent ears of the side aluminum frame and the hook-folded pieces of the upper aluminum frame are fitted. Insert a piece of reinforcing plywood with the same shape as the white board body through the opening of the lower aluminum frame between the tightening screws screwed into the respective bent ears and the back of the white board body, and then insert the reinforcing plywood with the same shape as the white board body through the opening of the lower aluminum frame. An assembly type white board characterized in that a stopper bullet piece, a gathering piece, and a support piece are branched into three directions at both ends of a lower aluminum frame body, and a receiving piece having a bag portion having a U-shaped cross section is elastically fitted.