JPS6229278Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to plate-shaped appliances (hereinafter referred to as blackboards) having display functions such as blackboards and whiteboards.

As shown in Fig. 1, blackboards generally have a rectangular plate-like member 1 with a reinforcing and decorative frame 2 fixed around it, and since it is usually used horizontally, a powder catcher 3 is fixed on its long side. be.

However, due to various circumstances, blackboards may be used vertically as shown in FIG. In such a case, it would be extremely convenient if the powder catcher 3 described above could be removed and a separately prepared powder catcher 4 for the short side could be attached to the short side of the frame member 2.

In addition, for example, in the case of blackboards where the front side of the plate member 1 is a blackboard and the back side is a white board, the powder tray 3 shown in solid line in Fig. 1 can be removed and installed in position A shown in the chain line in the same figure. If you can't fix it, you won't be able to use the front and back of the blackboard effectively. Also,
It is convenient for packaging and transportation if the pollen holder can be attached and detached freely.

Due to the circumstances explained above, various types of powder holders that can be attached and detached from blackboards have been devised, but as a general trend, powder holders that can be firmly attached are not easy to attach and detach; has the disadvantage that it cannot be installed firmly.

There is also a type in which the powder catcher 3 is attached and detached by sliding it in the direction of arrow B or C in Fig. 1.
It cannot be attached or detached unless there is a large space on the side of the blackboard.

This idea was created in view of the above circumstances.
The purpose is to provide blackboards equipped with removable dustpans that do not require a large space for attachment and detachment and can be firmly attached.

In order to achieve the above object, the present invention consists of a rectangular plate-shaped member, a frame member fixed around the plate-shaped member, and a powder catcher attached to the frame member, The above-mentioned frame material is provided with protrusions on both sides of the plate-like member along its outer periphery that are substantially perpendicular to the plate surface, and along its inner periphery on both sides of the plate-like member that are provided with protrusions that are approximately perpendicular to the plate surface. The powder catcher has a tall hook-shaped member that rises from its base end and engages with the back side protrusion on the inner periphery of the frame material, and a tall hook-like member that rises from its upper surface to form the frame. A short hook-shaped member that engages with the protrusions on the surface side of the outer periphery of the material is integrally molded, and the frame material is fixed to the plate-like member with a mounting screw, and the top of the mounting screw is attached to the inner and outer periphery. configured so as not to protrude from the surface in contact with the top of the protrusion,
and the powder catcher is attached to the frame material by engaging the short hook-like member with the protrusion on the outer circumferential surface of the frame material and the tall hook-like member with the protrusion on the inner circumferential back surface of the frame material. It is characterized by

FIG. 3 shows an example of a frame material conventionally fixed around blackboards. The cutting angle θ at both ends of the frame material 2, which has a U-shaped cross section and is provided with a groove that fits around the plate-like member 1 of a blackboard, is 45 degrees, and is slightly smaller than the horizontal dimension W of the plate-like member 1. V-shaped cuts 5, 5, 5 with an apex angle φ = 90° are alternately spaced apart by a large distance W′ and a distance H′ slightly larger than the vertical dimension H of the plate member 1.
is provided. The frame material 2 thus formed is bent at right angles at the V-shaped cuts 5, 5, 5, surrounds the plate member 1, and is fixed using an appropriate method such as screws, adhesive, nails, etc. It is used. Among these fixing methods, the method using screws is relatively quick and
They are excellent in that they can be easily fixed, but if sunk-head screws are not used, the heads may protrude and interfere with the attachment of the powder holder. For this reason, when using screws, consideration must be given to the mounting structure of the powder catcher.

Next, an embodiment of the present invention will be described with reference to FIGS. 4 to 6. FIG. 4 shows an example in which the present invention is applied to the frame material shown in FIG. 3, and shows a U-shaped cross section S taken in a plane perpendicular to the length direction. FIG. 5 is an enlarged view of the above-mentioned cross-sectional shape, and 1 is a part of the plate-like member to which this frame member is attached.

At both ends of the outer peripheral surface 6 corresponding to the back surface of the U-shape,
Height in the same direction as the thickness direction arrow t of the plate member 1
A pair of protrusions 8, 8 of t' are integrally formed. and,
A pair of protrusions 7, 7 are provided parallel to the pair of protrusions 8, 8, respectively, on the inner peripheral side of the frame material, that is, at locations corresponding to both ends of the U-shape. Reference numeral 9 denotes a side surface of the protrusion 7 on the inner peripheral side, and is configured perpendicularly to the plate member 1. In the present invention, providing a vertical protrusion on the inner circumferential side of the frame material means that at least the inner circumferential side surface 9 of the inner circumferential protruding line 7 is made perpendicular to the plate member 1 as in the above example. means.

The frame member 2 configured as described above is fixed to the frame member 1 with mounting screws 12. This mounting screw 12 has a surface MN where its top touches the tops of both protrusions 7 and 8.
Configure it so that it does not protrude from the outside.

FIG. 6 shows the state in which the powder catcher 3 according to the present invention is attached to the frame member 2 constructed as described above, using solid lines. The powder receiver 3 of this embodiment is made of synthetic resin, and a tall hook-shaped member 10 having a hook-shaped cross section that engages with the side surface 9 is integrally formed at the end on the mounting side. In the assembled state shown by the solid line in FIG. 6, a hook-shaped member engages with the protrusion 8 of the pair of protrusions 8, which is remote from the tall hook-shaped member 10. A short hook-shaped member 11 having a cross section is attached to the powder receiver 3.
Formed integrally with As a result, the tall hook-shaped member 10 and the short hook-shaped member 11 are formed in opposing positions with their hook portions facing each other.

When implementing the present invention, metals such as aluminum can also be used as the material for creating the pollen.

The present embodiment is constructed as described above, and each part of the powder catcher 3 is made of the same material, but the rigidity of the tall hook-shaped member 10 and the rigidity of the short hook-shaped member 11 are significantly different. . That is, the hook-shaped member 10 is tall because it is made to engage with the side surface 9 of the protrusion 7 provided on the inner peripheral side of the frame member 2. When the tip of the hook receives a force J in the bending direction, the lever arm is long and easily bends.
In comparison, the hook-shaped member 11 has a shape that engages with the protrusion 8 provided on the outer circumferential side of the frame material 2 and is short in height.
When a bending force is applied to the tip of the hook, the lever arm is short, so it is difficult to bend.

As mentioned above, even if the tall hook-shaped member 10 and the short hook-shaped member 11 provided on the powder catcher 3 are integrally molded from the same material, the tall hook-shaped member 10 does not have elastic properties. The relatively short hook-shaped member 11 exhibits rigid characteristics, thereby producing the following effects.

As shown by the chain line in FIG. 6, the powder catcher 3 is moved counterclockwise by engaging the short hook-shaped member 11 provided on the powder catcher 3 with the protrusion 8 provided on the outer circumferential side of the frame material 2. When turned, the tip of the tall hook-shaped member 10 comes into contact with the protrusion 7 provided on the inner circumferential side of the frame material 2, and it easily bends due to the above-mentioned reason. The tip of the tall hook-shaped member 10 engages with the side surface 9 in such a manner that it is attached as shown by the solid line in FIG.

As mentioned above, the powder catcher 3 can be quickly and easily attached to the frame member 2 with little force, and this attachment operation can be carried out without requiring a large amount of free space.
That is, it can be attached without sliding in the longitudinal direction of the pollen holder. When the frame material 2 is held between the tall hook-shaped member 10 and the short hook-shaped member 11 as shown by the solid line in FIG. Therefore, unless a special force is applied to pull the edge member 10 away from the side surface 9, the powder catcher 3 will remain attached to the frame member 2, and there is a risk that it will fall off even if it is subjected to vibrations. There is no such thing.

In particular, even if a large downward force is applied to the powder receiver 3 as shown by arrow G in FIG. Since the vicinity of the attachment end of the bottom plate part 3b of the catcher 3 is pressed against the outer circumferential surface 6 of the frame member 2 and resists external force, there is no fear that the powder receiver 3 will come off from the frame member 2. When a force is applied in a direction that pushes up the powder catcher 3 in the opposite direction to the above-mentioned arrow G, the tall hook-shaped member 10 mainly receives the tensile force, and the hook portion at the tip of the tall hook-shaped member 10 is vertically pulled up by the plate closest to the front 9. Although a force is exerted to press against the plate-shaped member 1, there is no force in the direction of pulling it away from the side surface 9 and the plate-shaped member 1, so there is no risk that the powder catcher 3 will fall off from the frame member 2.

To remove the powder catcher 3 from the frame member 2, force is applied to the tall hook-shaped member 10 in the direction of arrow J in FIG. 6 to bend it. As mentioned above, this tall hook-shaped member 10
has great elasticity, so this operation can be performed with a fingertip, but it is easier to bend it by inserting, for example, a coin between the tip of the tall hook-shaped member 10 and the plate-shaped member 1 and twisting it. I can do it. By bending the tall hook-shaped member 10 and separating it from the protrusion 7 in this manner, the powder catcher 3 can be easily removed from the frame member 2.

The frame material of the present invention, like the frame material 2 in the above embodiment, is constructed in a symmetrical shape with respect to the plate-like member 1, so the removed powder catcher 3 can be turned around and placed on the opposite side as shown in FIG. It is also easy to install.

Furthermore, as explained with reference to FIG. 5, since the head of the mounting screw 12 is designed not to protrude from the surface MN, when the powder catcher 3 is mounted on the frame material 2, the head of the screw is shaped like a tall hook. There is no risk of interfering with the member 10 and preventing installation.

Due to the effects described in detail above, according to the present invention, it can be applied to either the short side or the long side of the frame material provided around the blackboards, or to either the front or back side of the blackboards. The pollen catcher can be quickly and easily installed and removed, and since it does not require a large amount of free space for operation, it can be easily attached and removed even in tight spaces, and the attached pollen catcher is not subject to unexpected forces. It has an excellent practical effect in that there is no risk of it falling off.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a blackboard commonly used in the past, Figure 2 is an exploded perspective view to explain how to attach and remove the powder catcher of the blackboard, and Figure 3 is an expanded view of the frame attached to the blackboard. 4 to 7 show an embodiment of the present invention, FIG. 4 is a perspective view with a part of the frame material cut away, and FIG. 5 shows the frame material in the shape of a blackboard. FIG. 6 is a cross-sectional view of the powder tray attached to the frame member, and FIG. 7 is a cross-sectional view for explaining how to use it. 1... Plate member, 2... Frame material, 3, 4... Powder catcher, 3a... One edge, 3b... Bottom plate part, 5...
Cut, 6... Outer peripheral surface of the frame material, 7... Protrusion provided on the inner peripheral side of the frame material, 8... Protrusion provided on the outer peripheral side of the frame material, 9... Inner peripheral side of the frame material The side surface of the protrusion provided in 1
0...Tall hook-shaped member, 11...Short hook-shaped member, 12...Mounting screw.

Claims (1)

[Scope of utility model registration request] It consists of a rectangular plate-shaped member, a frame material fixed around the plate-shaped member, and a powder catcher attached to the frame material. Protrusions that are substantially perpendicular to the plate surface are provided on both sides of the plate-shaped member, and protrusions that are substantially perpendicular to the plate surface are provided on both sides of the plate-shaped member along the inner periphery of the plate member. is a tall hook-shaped member that rises from its base end and engages with the protrusion on the back side of the inner periphery of the frame material, and a tall hook-shaped member that rises from the top surface of the powder receiver and engages the protrusion on the front side of the outer periphery of the frame material. The frame member is integrally molded with a short hook-shaped member to be engaged, and the frame member is fixed to the plate member by a mounting screw, and the top of the mounting screw is a surface in contact with the top of the protrusion on the inner and outer periphery. The short hook-shaped member is engaged with the protrusion on the outer circumferential surface of the frame material, and the tall hook-shaped member is engaged with the protrusion on the inner circumferential back surface of the frame material, respectively. Blackboards with a removable powder catcher characterized by having the receiver attached to the frame material.