JPS6229279Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a frame for a blackboard.

Conventionally, such chalkboard frame frames are made by fitting a roughly L-shaped member to the edge of the chalkboard and fastening the end face or the portion covering the peripheral edge of the board surface with fastening hardware such as screws or nails.

However, in such a blackboard edge frame, the heads of nails, etc. are exposed, and dirt tends to accumulate in that area, which is unfavorable in terms of appearance and maintenance.
In addition, connecting fittings are used at the corner portions to connect the respective shapes, which complicates the structure of the shapes, and furthermore, requires time and effort to assemble, resulting in high costs.

Therefore, in view of the above-mentioned drawbacks, the present invention was devised to solve this problem, and has a simple structure.
In addition, the present invention provides a blackboard edge frame that does not expose the nail heads and is easy to assemble. A blackboard edge frame comprising fixing fittings such as nails for fixing the frame to the blackboard, and supporting fittings having a substantially L-shaped cross section to connect the ends of each formwork to form a continuous frame. , the formwork has a side piece that covers the peripheral edge of the blackboard, a front piece that is connected to this side piece and covers the peripheral edge of the front side of the blackboard, and a back side of the front piece that faces the front side of the blackboard. A cross section abbreviated to T
The head of the fixing metal fitting is formed into a rectangular parallelepiped shape that slidably fits into the groove, and the size of both ends of the supporting metal fitting is set to match the ends of the groove. The frame of a blackboard is characterized by being formed to a size that fits closely into the frame of the blackboard.

According to this invention, when attached to a blackboard,
Cut the formwork to match the size of the blackboard, fit the rectangular parallelepiped head of the fixing bracket into the groove of the formwork, and then support each part in the groove at the end of one of the formworks to be joined at right angles. One end of the metal fitting is press-fitted, and then the other end of the support metal fitting is press-fitted into the groove at the end of the other formwork to form a rigid rectangular frame.

Then, while fitting the frame into the periphery of the blackboard, the front piece is tapped and the fixing metal fittings are driven into the periphery of the surface material of the blackboard and attached. The edge frame that is attached to the blackboard in this way has a rectangular parallelepiped head of the fixing bracket that fits into the groove of the frame, so the fixing bracket does not rotate due to vibrations, etc., and its fixing force is strong. Become something.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes the edge frame of the blackboard according to the present invention. 5, and a support fitting 6 that supports and connects each formwork 4 in a frame shape.

The formwork 4 is formed into an L-shaped cross section by a side piece 7 that covers the end face of the blackboard 2 and a front piece 8 that is connected to the side piece 7 and covers the peripheral edge of the surface material 3. On the back side of the front piece 8, a hook piece forming a groove 9 having a substantially T-shaped cross section in the longitudinal direction is provided to protrude, and a large number of fixing metal fittings 5 are slidably fitted into this groove 9.

This fixing metal fitting 5 has a substantially rectangular parallelepiped head 10 that is fitted into a groove 9, and a rod-shaped driving part 11 with a sharp tip that protrudes from the slit-shaped opening of the groove 9. The driving portion 11 is then driven into the surface material 3.

On the other hand, both ends of each formwork 4 are cut at 45 degrees to form a rectangular frame body.
A substantially L-shaped support fitting 6 is inserted into a groove 9 to connect and support the joint portion of each formwork 4, 4.

Note that the shape material is not limited to the above-mentioned embodiment, and for example, as shown in FIG.
The side end of the front piece 8 is slightly protruded toward the surface material 3 side to form a protrusion 1.
3 is formed, and in FIG. 5, an arc shape is formed at the connecting part between the side piece 7 and the front 8, and in FIG. There is,
In FIG. 7, a groove 9 is formed at the corner of the side piece 7 and the front piece 8, and a diagonal piece 15 is extended from the edge of the front piece 8. In FIG. 8, the front piece 8 is formed in an arcuate cross-section. In FIG. 9, the front piece 8 is formed to have a dogleg shape in cross section, and this may also be used.

The present invention is constructed as described above, and when used, the groove 9 of the formwork 4 is cut to match the size of the blackboard 2.
At the same time, the fixing metal fittings 5 are fitted into the grooves 9, and the supporting metal fittings 6 are inserted into the respective grooves 9 to assemble a rectangular frame. Then, while fitting the frame into the blackboard 2, tap the front surface of the front piece 8 and drive the fixing metal fittings 5 into the surface material 3, so that the frame is attached as shown in FIGS. 2 and 3.

The present invention is constructed as described above, in which a hook having a groove with a substantially T-shaped cross section is formed on the front backside covering the peripheral end surface of the blackboard, and the head of the fixing fitting is slidably fitted into the groove. While forming it into a rectangular parallelepiped shape,
The size of both ends of the support fittings was made so that they fit tightly into the grooves, so after firmly assembling the edge frame into the rectangular frame, the fixing fittings were driven into the frame on the front side of the blackboard. The installation work is easy, and the fixing metal fittings do not rotate and come off due to vibrations, so the installation is strong and reliable.

In this way, the present invention has excellent advantages,
The practical value of implementing the present invention is enormous.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view of a frame of a blackboard according to the present invention, FIG. 2 is a partial front view showing the state of use, and FIG. The line sectional views and FIGS. 4 to 9 are front views showing different embodiments of the mold material. 1... Edge frame, 2... Blackboard, 3... Surface material, 5...
...Fixing metal fittings, 6... Supporting metal fittings, 7... Side pieces, 8...
...Front piece, 9... Groove, 10... Head, 11... Driving part.

Claims (1)

[Scope of utility model registration request] The formwork applied to the periphery of the surface material of the blackboard, the fixing metal fittings such as nails for fixing this formwork to the blackboard, and the ends of each of the formworks are brought into contact with each other so that the formworks are connected in a frame-like manner. A frame for a blackboard including a support fitting having a substantially L-shaped cross section, the frame being connected to a side piece that covers a peripheral edge of the blackboard, and a side piece that is connected to the side piece to cover a peripheral edge on the front side of the blackboard. A front piece, and a hook piece having a groove having a substantially T-shaped cross section protruding from the back side of the front piece so as to face the surface side of the blackboard, and the head of the fixing metal fitting is placed in the groove. What is claimed is: 1. A blackboard edge frame, characterized in that it is formed into a rectangular parallelepiped shape that fits slidably, and the size of both ends of the support metal fittings is formed to fit tightly into the ends of the groove.