JPH0411838Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a combination of attachment parts used to support a bulletin board.

In the present invention, a bulletin board is a general term for a plate-like member, such as a blackboard or a whiteboard, on which writing and erasing can be done quickly and easily.

[Conventional technology]

Conventionally, attachment parts for supporting bulletin boards are generally fixed to bulletin boards, and are classified into wall-hanging bulletin boards and rotating bulletin boards depending on the type of attachment.

The above classifications were already established at the time of shipment from the manufacturing factory, and the consumer (user) could not freely change the usage.

[The problem that the idea attempts to solve]

FIG. 6 shows a wall-hanging blackboard as an example of a wall-hanging bulletin board, and FIG. 7 shows a rotating blackboard as an example of a rotating bulletin board.

The blackboard main body 1 is a common component in both cases, but a pair of hanging fittings 2 and a powder catcher 3 are fixed to the wall-hanging blackboard (FIG. 6).

A pair of rotating shafts 4 are fixed to the rotating blackboard (FIG. 7).

5 is a column, 6 is a connecting rod, 7 is a leg, and 8 is a caster.

The powder catcher 3' of this rotating blackboard (Fig. 7) cannot be attached to the blackboard main body 1 (because the blackboard main body rotates), so the powder catcher 3' is attached to the connecting rod 6. ing.

A hanging fitting 2 which is an attachment to the blackboard body 1,
If the rotating shaft 4 and powder tray 3 can be quickly and easily attached and detached, the blackboard main body 1 can be used for both a rotating blackboard and a wall-mounted blackboard, but in the conventional technology, the bulletin board attachment can be quickly and easily replaced without using hand tools. I couldn't do it.

This idea was created in view of the above circumstances.
A hanging fitting and a powder tray are attachments for wall hanging, and a rotating shaft is an attachment for rotation.
To provide a combination of attachment devices for a bulletin board that can be quickly and easily attached and detached.

[Means to solve the problem]

FIG. 1 is an explanatory diagram showing the principle of a mechanism for attaching and detaching attachments according to the present invention.

A grooved pestle-like member 9 is constructed and attached around the blackboard main body 1. 9a is a through hole for a mounting screw, and 9b is a mounting screw.

The cross section of the grooved pestle-like member 9 is formed by bending the U-shaped tips of _two parallel surfaces at right angles inward and facing each other with an interval W ₂ in between. do.

10 is a rectangular plate nut having a width W ₃ and a length L. The above-mentioned related dimensions are L>W ₁ >W ₃ >W ₂ .

When implementing the present invention, the shape of the plate nut is not necessarily limited to a rectangular plate, but may be, for example, elliptical or oval.

Reference numeral 12 denotes a bolt member which is screwed into the plate nut 10, and has a coin split 12a and a knurl 12b on its head. With this configuration, the screws can be tightened and loosened with bare hands even without a hand tool, and can be further tightened and loosened using a coin.

Reference numeral 11 denotes a washer, which has a U-shaped cross section that fits onto the grooved punch-like member 9, and is provided with an elongated hole 11a that fits into the threaded punch 12c of the bolt member 12.

[Effect]

FIGS. 5A and 5B are explanatory views of the operation of the basic configuration.

(See Figure 5A) The width dimension _W3 of the plate nut 10 is:
Although it is wider than the inlet width dimension W ₂ of the grooved pestle-like member 9,
The bolt member 12' can be inserted at an angle as shown. In this case, as can be easily understood from Figure A, the hole in the washer 11 must be a long hole 11a in order to tilt the bolt member 12.

When the plate nut 10 is inserted into the groove of the grooved pestle-like member 9 (see FIG. 5B) and the bolt member 12' is turned,
Length dimension of plate nut 10 (direction perpendicular to the page) L
is larger than the inner dimension _W1 , so the plate nut 10 does not rotate together and the tightening/loosening operation is performed reliably.

When the bolt member 12' is turned in this manner, the grooved pestle-like member 9 is tightened by the plate nut 10 and washer 11.
is tightened and fixed.

In this state (FIG. 5B), even if a force is applied to vertically separate the grooved pestle-like member 9 and the bolt member 12', there is no risk of them coming off because W ₃ >W ₂ .

In addition, in order to securely fix the bolt member 12' against the force in the shearing direction perpendicular to the plane of the paper, a tip portion 12d is provided at the tip of the bolt member 12', and the tip portion 12d is provided on the bottom surface of the grooved pestle-like member 9. It's good to let it dig in.

The attachment of the present invention uses the above-mentioned engagement and detachment structure, and is configured such that the hanging tool, rotating shaft, and powder catcher can be attached and detached at will.

〔Example〕

FIG. 2 shows a rotating shaft according to an embodiment of the present invention. Comparing this with the basic structure shown in FIG. 1, a portion 12e that functions as a rotating shaft and a tip portion 12d are added and are integrally connected. As a result, this rotating shaft (FIG. 2) can be attached to and detached from the blackboard main body 1 via the grooved pestle-like member 9, and has sufficient support strength.

FIG. 3 shows a hanging fixture according to an embodiment of the present invention. Comparing this with the basic structure shown in FIG. 1, a portion 13 that functions as a hanging fitting is added and is integrally connected.

Thereby, this hanging fixture (FIG. 3) can be attached to and detached from the blackboard main body 1, and has sufficient hanging strength.

FIG. 4A shows a plan view of a pollen catcher according to an embodiment of the present invention, and FIG. 4B shows a cross-sectional view thereof.

The part of the washer 11' shown surrounded by a chain line in Fig. 4B is a component corresponding to the washer 11 shown in the principle diagram (Fig. 1), and the powder receiving part 14 is integrally connected. be. Thereby, this powder tray (FIG. 4) can be attached to and detached from the blackboard main body 1. The blackboard body 1
When using it for rotation, use this pollutant (fourth
(Fig.) should be removed and attached when used as a wall hanging.

The set of attachments in this example includes hanging fittings (Fig. 3) necessary for wall hanging, and a powder catcher (Fig. 4).
(Fig. 2) and a rotating shaft (Fig. 2) necessary for rotation, and each of these components can be detached and replaced.

Furthermore, since these components can be engaged with and fixed at any location on the grooved pestle-like member 9, the distance between the pair of hanging fittings can be arbitrarily adjusted when used as a wall hanging.

() When used for rotation (see Figure 7)
Although the mounting position of the rotating shaft is set at a point equally dividing the height dimension H of the blackboard body 1, it is also possible to adjust the support height of the blackboard body by intentionally biasing the mounting position upward or downward.

() Suitable for disassembling, packaging, and transporting.

[Effect of idea]

As explained above, the bulletin board equipped with the attachment of the present invention can be used both for hanging on a wall and for rotating, and can be quickly and easily changed without requiring any special hand tools.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the basic configuration of the present invention.
FIG. 2 is an exploded view of a rotating shaft according to an embodiment of the present invention, and FIG. 3 is an exploded view of a hanging fitting. Fourth
The figures show a pollinator according to an embodiment of the present invention, in which A is a partial plan view and B is a cross-sectional view. Figure 5 A, B
1 is an explanatory diagram of the functions and effects of the basic components shown in FIG. 1. FIG. Figure 6 is an explanatory diagram of a wall-mounted blackboard.
FIG. 7 is an explanatory diagram of the rotating blackboard. 1...Blackboard body, 2...Hanging fittings, 3, 3'...
Powder receiver, 4... Rotating shaft, 9... Grooved pestle-like member, 10
... plate nut, 11 ... washer, 11a ... long hole,
12, 12'... Bolt member, 12a... Coin split, 12b... Knurling, 12d... Sword tip, 12e... Rotating shaft part, 13... Hanging tool part, 1
4...Powder receiving part.

Claims (1)

[Claims for Utility Model Registration] (a) A grooved pestle-like member having a cross section of a U-shape with both ends bent further inward at right angles is fixed around the bulletin board body, (b) The U-shape Let W ₁ be the internal dimension of the two parallel sides of , and let W ₂ be the interval between the ends bent at right angles. (c) Width dimension W ₃ where W ₁ > W ₃ > W ₂ , and L > W ₁ (d) a plurality of bolt members are configured to be screwed into each of the plate nuts; (e) a plurality of bolt members are configured to be screwed into each of the plate nuts; (f) forming a plurality of washer members having a U-shaped cross section to be fitted and provided with a long hole to be fitted to the bolt member; (f) integrating one of the plurality of washer members; (g) a suspension fitting in which one of the plurality of washer members is integrally connected; (h) one of each of the plurality of bolt members is connected in series; An attachment for a bulletin board, characterized in that a pair of rotating shafts are provided, each of which is integrally arranged in series, and the tip of the bolt member is sharpened in the shape of a set screw.