JP2000010514A - Method for fixing bulletin and bulletin fixture as well as bulletin board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for fixing a bulletin which is mounted with relatively small force without damaging a bulletin board and is stably exhibited without the pulling out and loosening of a fixture. SOLUTION: The leg part 14 of the fixture 1 consisting of a head part 12 and the leg part 14 is penetrated through the bulletin 18. The bulletin 18 is fixed by inserting the leg part 14 into a hole 20 formed at the bulletin board 16. Further, the front end 22 of the leg part 14 projecting to the rear of the bulletin board 16 through the hole 20 is deformed more largely than the diameter of the hole 20 by elastic repulsive force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulletin fixing method, a bullet fastener, and a bulletin board for posting a poster or the like.

[0002]

2. Description of the Related Art Conventionally, thumbtack has been used to fasten a notice such as a poster to a bulletin board. As an example of such a pushpin, a pushpin 100 is shown in FIG.
Shown in The thumbtack 100 has a head 102 pressed by hand.
And a leg 106 pierced into the bulletin board 104. According to the thumbtack 100, the poster 108 can be stuck to the bulletin board 104 by holding the poster 108 on the bulletin board 104 and piercing the thumbtack 100 from the poster 108 into the bulletin board 104.

However, according to such a pushpin 100,
Even if the leg 106 can pierce the bulletin board 104, the bulletin board 1
It was easy to get out of 04. For this reason, the poster 108 may come off from the bulletin board 104, failing to perform functions such as advertisement, advertisement, or message, and may be injured by stepping on the missing pushpin 100. Also, the poster 108 could be stripped. Also, pushpin 100
Piercing the bulletin board 104, the bulletin board 104 is damaged.

Further, according to the thumbtack 100, the head 102
Unless a great force was applied by hand, the bulletin board 104 could not be pierced. Therefore, not only does it take time to pierce the thumbtack 100 into the bulletin board 104, but also the hand may be painful, and the work of mounting the poster 108 is difficult.

[0005] In addition, wood such as plywood is often used on the bulletin board 104 so that the leg 106 of the thumbtack 100 is easily pierced, and cork or the like is often attached to the surface. For this reason, when it is used outdoors, there is a problem that it is easily rotted by rainwater and has poor durability. In particular, electoral bulletin boards, which were mostly rebuilt each time, used a lot of wood and were wasting valuable forest resources. In addition, there is an inconvenience that fasteners and the like using magnets cannot be used because of the wooden material.

The inventors of the present invention have conducted intensive studies on a method for fixing a bulletin board which can pierce a bulletin board with a relatively small force, does not easily come off, and does not damage the bulletin board. As a result, the present inventors have arrived at the present invention. .

[0007]

SUMMARY OF THE INVENTION The gist of the bulletin fixing method according to the present invention is that a leg of a fastener comprising a head and a leg is penetrated through the bulletin, and the leg is provided on a bulletin board. The object is to penetrate the hole and fix the notice.

[0008] Further, in such a method of fixing a notice,
The tip of the leg that penetrates the hole provided in the bulletin board and protrudes from the back of the bulletin board is deformed into a shape larger than the diameter of the hole provided in the bulletin board by elastic repulsion.

Further, in this bulletin fixing method, the shape of the portion of the tip of the leg protruding from the back of the bulletin board and in contact with the hole provided in the bulletin board expands in a tapered shape toward the tip of the leg. Is to be.

Further, in this bulletin fixing method, a tip of a leg portion which penetrates a hole provided in the bulletin board and protrudes from the back of the bulletin board has a larger outside diameter than a diameter of the hole provided in the bulletin board. It was to be.

Another feature of the bulletin fixing method according to the present invention is that the bulletin is sandwiched between a concave portion or a convex portion provided on the bulletin board and a convex portion or the concave portion provided on the holding member. , To fix the bulletin board to the bulletin board.

The gist of the notice fastener according to the present invention is a fastener comprising a head and a leg,
It is a fastener that is used to penetrate a leg and penetrate a hole provided in a bulletin board to fix the bulletin.

[0013] Furthermore, in such a notice fastener, the tip portion of the leg portion is thicker than the middle portion, and the tip portion is configured to be reversibly thin.

Still further, in such a notice fastener, the tip of the leg is broken along the longitudinal direction of the leg.

The gist of the bulletin board according to the present invention resides in that a group of holes arranged in a rectangular outline is provided in at least two places.

Another feature of the bulletin board according to the present invention is a bulletin board provided with a notice fastener, wherein the notice fastener comprises a head and a leg, and the leg is posted. It is a fastener used to penetrate an object and penetrate a hole provided in a bulletin board to fix a posted matter.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a bulletin board fixing method, a bulletin board fastener and a bulletin board according to the present invention.

FIG. 1 illustrates an example of a method for fixing a bulletin according to the present invention. A hole 20 provided in a bulletin board 16 has a hole 10 provided in a bulletin board 16 and a leg 10 of a fastener 10 comprising a head 12 and a leg 14. The tip 22 of the part 14 is about to be inserted through the notice 18. The tip portion 22 of the leg portion 14 is split into two along the longitudinal direction, and the hole 2 is formed while narrowing the gap.
It is designed to penetrate zero.

The leg 14 is inserted into the hole 20 and
FIG. 2 shows a state in which 8 is fixed. The notice 18 is firmly fixed between the head 12 of the fastener 10 and the bulletin board 16. Further, since the two split ends of the leg 14 elastically return to the original shape and are thicker than the inner diameter of the hole 20, the fastener 10 does not fall out of the bulletin board 16. FIG. 3 is a front view showing a state in which a corner portion of the notice 18 is fixed to the bulletin board 16 by being fastened with the fastener 10.

FIG. 4 shows a bulletin board 16 used in the present invention.
The hole 20 is provided as shown in FIG. Also, leg 1
Fastener 1 whose tip 22 projects out from the back of the bulletin board 16
When 0 is used, an empty space must be provided behind the bulletin board 16. FIG. 5 and FIG. 6 show a case where the bulletin board 1
6 shows an example of a method for attaching the wall 6 to the wall 24 and the bulletin board 1.
6 and a spacer 26 is interposed therebetween, and is attached using screws 28.

The material of the bulletin board 16 is not particularly limited.
Preferred are wood, metals such as aluminum and stainless steel, plastics, and the like, or composite products thereof, for example, a laminate of an aluminum plate and a wooden plate or a foamed resin plate. Wooden is excellent in lightness and cost, and metal is excellent in durability, dimensional stability and appearance, and there is a possibility that a fastener using a magnet or the like can be used together. Further, plastics are excellent in durability and workability.

The bulletin board 16 may have a single plate shape, or may be folded using hinges or the like for convenience in carrying or storing, or may be divided into several pieces for assembly. Is also good.

An example of the fastener 10 shown in FIG. 7 is shown in FIG.
This is the one used in the embodiment described in FIG. The leg 14 is divided into two along the longitudinal direction, and the tip 2
2 is thicker than the intermediate portion 30. The thickness of the middle portion 30 is slightly smaller than the inner diameter of the hole 20 provided in the bulletin board 16, and the thickness of the tip portion 22 is slightly larger than the inner diameter of the hole 20 provided in the bulletin board 16. The leg portion 14 is elastically deformed when subjected to a lateral force, narrows the gap between the two split portions,
The thickness of the tip portion 22 can be reduced so that the tip portion 22 can penetrate the hole 20 of the bulletin board 16. When the distal end portion 22 slips out to the back side of the bulletin board 16 and the deformation stress acting to sandwich the split portion is released, the distal end portion 22 returns to its original thickness by the elastic repulsive force, so that the fastener 10 is surely secured. Will be fixed to.

The head 12 of the fastener 10 referred to in the present invention is
A portion provided at one end of the fastener 10 and operated by hand to insert and remove the fastener 10 is made thicker than the inner diameter of the leg 14 and the hole 20 provided in the bulletin board 18. The shape is not limited to a flat shape as shown in FIG. 7, and various shapes are possible. For example, as shown in FIG.
If the projection 32 is provided on the edge on the back side of the head 12, the fixing force is improved because the projection 32 bites into the posted matter, and the head 12 is compared with the head 12 as shown in FIG. If the shape has a target thickness, it is easy to pick it with fingers, and the work of inserting and removing becomes easy.

Also, the leg portion 14 of the fastener 10 referred to in the present invention.
"" Means a portion provided at the other end of the fastener 10 and extending in a rod shape or a linear shape. The cross-sectional shape is not limited to a circle, but may be a square, a triangle, an ellipse, or the like, as long as it can penetrate the hole 20 provided in the bulletin board 18. As illustrated in FIG. 9, the tip of the leg portion 14 can be further sharpened to improve the ease of penetration into the notice 18. Also, its thickness is almost equal to the inner diameter of the hole 20, or
It is preferable to make it slightly smaller so as to make it hard to fall out of the hole 20.

The material of the leg portion 14 is not particularly limited, but any material that can be elastically deformed is preferable, and plastic, rubber, metal, and the like are preferable. There are many types of plastics and rubbers having appropriate rubber elasticity and excellent moldability, and are the most suitable materials for implementing the present invention. Further, if a metal material such as a leaf spring material is used, the fastener 10 having excellent elasticity and durability can be obtained.

According to another embodiment of the method for fixing a bulletin object of the present invention, the following method can be implemented. That is,
FIG. 10 shows an example in which the sign 18 is more stably fixed by sandwiching the packing 34 between the head 12 of the fastener 10 and the sign 18. As the packing 34, it is preferable to use soft rubber, foamed polyurethane, or the like. FIG. 11 shows that by deforming the head 12 with fingers,
An example is shown in which the tip portion 22 of the leg portion 14 is made thinner so that the fastener 10 can be pulled out from the hole 20 of the bulletin board 16. Head 1
By pressing both side surfaces of the leg 2 in the direction of the arrow, the gap in the split leg 14 becomes narrower, and the tip 22 becomes thinner. In this example, it is not necessary to make the base portion 36 of the tip end portion 22 tapered so that it is easy to slide.
It is almost right angle.

The fastener used in the method for fixing a bulletin according to the present invention may have two or more legs 14 with a common head 12. FIG. 12 shows the use of the fastener 11 having two legs 14 to change the corners of the notice 18 to the bulletin board 16.
In this case, two holes 20 of the bulletin board 16 can be used with one fastener 11, and the fixing force is greatly increased. FIG. 13 shows a use example of a fastener 38 having four legs 14 and a fastener 40 having two legs 14. According to the fastener 38 with four legs 14, the sign 18 can be displayed with only one fastener 38.
And the effect of improving the appearance can be obtained. In the example of the fastener 40 used across the notice 18, the fixing force can be increased by not blocking the display on the notice 18. FIG. 14 is an enlarged cross-sectional view of the fastener 40 shown in FIG. 13.
It is described that the pressing force on the fixing member 6 makes the fixing member stronger.

In general, the notice 18 is a thin sheet such as paper. Therefore, unless the back surface of the head 12 of the fastener 10 and the surface of the bulletin board 16 are in close contact with each other, a stable fixed state cannot be obtained. When the head 12 is pressed and the leg 14 of the fastener 10 penetrates into the hole 20 of the bulletin board 16, it is certainly brought into close contact, but when the pressure is released, the fastener 10 is slightly restored. Returning, the fixed state of the notice 18 may become unstable. It is preferable that the fastener 10 is always pulled toward the bulletin board 16 even when the pressure is released.

FIG. 15 is an enlarged view of the vicinity of the distal end 22 of the leg 14 inserted into the hole 20 of the bulletin board 16. The split distal end portion 22 is in contact with the end of the hole 20 while expanding in a tapered shape at an angle θ, and the gap W between the split portions is about to expand due to elastic repulsion. This elastic repulsive force changes direction by the taper surface of angle θ,
This is the force that pulls the fastener 10 in the direction of the arrow. That is, since the fastener 10 is always pulled to the bulletin board 16 side, the notice 1
8 does not loosen because it is strongly sandwiched between the back surface of the head 12 and the front surface of the bulletin board 16.

FIG. 16 shows another embodiment of the present invention, in which the tip 2 of the leg 14 protruding from the back of the bulletin board 16 is shown.
Reference numeral 2 denotes an example in which the screw has a larger outer diameter than the hole 20. The diameter of the root of the screw is smaller than the inner diameter of the hole 20, and the fastener 1 is pressed by rotating the fastener 10 while rotating.
0 can penetrate the hole 20. Since a screw having an outer diameter larger than that of the hole 20 is used, the fastener 10 is firmly fixed to the bulletin board 16 and does not come loose or come off. The bulletin board fixing method of the present embodiment is suitable for a relatively thin bulletin board such as a bulletin board made of a metal plate.

FIGS. 17 to 21 illustrate still another embodiment of the method for fixing a posted object according to the present invention. That is, the posted matter is sandwiched between the concave portion or convex portion provided on the bulletin board and the convex portion or concave portion provided on the holding member,
The example of the method of fixing a notice on a bulletin board is shown. FIG.
7, FIG. 18 shows an example in which the posted matter 18 is sandwiched between the convex part 46 of the pressing member 42 provided integrally with the head of the fastener 44 and the concave part 48 of the hole 20 provided in the bulletin board 16. I have. According to the bulletin fixing method of the present example, the recessed portion of the bulletin 18 that is pressed by the convex portion 46 serves as a resistance against the skid of the bulletin 18, so that the bulletin 18 is stably fixed. Will be. Further, the sign 18 pressed in a direction substantially perpendicular to the sheet surface by the convex portion 46 receives an elongation stress parallel to the sheet surface, and becomes tense, so that the entire slack is released. In the present invention, sandwiching the posted matter between the recessed portion or the convex portion provided on the bulletin board and the convex portion or the concave portion provided on the pressing member does not necessarily mean that both surfaces of the posted material are in contact with the convex portion and the concave portion. Does not mean that.

FIG. 19 shows an example in which the leg portion 14 of the fastener 44 is changed to a square pole shape and the fastener 44 is straddled over the end of the article 18 in the method of fixing the object described in FIG. ing. In this example, the concave portion 48 of the hole 20 having a rectangular cross section is used.
In contrast, the convex portion 46 having a circular cross section is combined,
The shapes of the concave portions 48 and the convex portions 46 are not particularly limited.
What is necessary is just to be the shape in which the convex part 46 can be inserted.

FIG. 20 and FIG. 21 show that the holding member 42 is pressed against the bulletin board 16
Here is an example in which is fixed. Since the pressing member 42 is fixed to the bulletin board 16, troubles such as losing the pressing member 42 can be avoided, and the pressing force can be increased by the spring, so that the fixing force can be further increased.

According to the posted article fixing method of the present invention, the posted articles 18 can be arranged and posted on the notice board 16 in an orderly and well-balanced manner based on the arrangement of the holes 20 or the concave portions 48 provided in the notice board 16 in advance. When it is necessary to display a poster frame, an election name, or the like, as in the case of displaying a poster of an election, a thin film or paper on which the poster frame, the election name, or the like is printed may be attached to the bulletin board 16. If it is peeled off after the election and returned to the plain bulletin board 16, it can be used again for the next election.

Further, if a transparent plastic plate or the like is overlaid on the notice 18 and fixed by the notice fixing method of the present invention, the notice 18 is covered and hardly damaged, and the wave of the notice 18 is reduced. It is possible to provide a bulletin board with excellent appearance and a glossy surface.

As described above, the tip 22 projecting from the back of the bulletin board 16 is elastically deformed and
According to the fastener 10 that can be thicker, the notice 18 can be fixed very stably. In the present invention, the method of elastically changing the thickness of the distal end portion 22 is not particularly limited. However, it is particularly preferable that the distal end portion 22 has a structure broken along the longitudinal direction of the leg portion 14.

The tip portion 22 of the fastener 10 shown in FIG. 2 is split into two. FIG. 22A shows an example of the fastener 10 broken into three, and FIG. 22B shows an example of the fastener 10 broken into four. The tip 22 may be broken into five or more. In any of the examples, if the tip of the tip portion 22 is made thinner than the hole 20 of the bulletin board 16 and gradually expanded in a tapered shape so as to be thicker than the hole 20, the tip portion 22 can be penetrated into the hole 20. Is pressed from the periphery by the inner wall of the hole 20, and the gap W of the crack is narrowed and narrowed. Hole 20
Through the back of the bulletin board 16,
Release from the pressing force by the inner wall of the hole 20, the gap W of the crack is expanded by the elastic repulsion, and the shape returns to the original shape larger than the hole 20. FIG. 3C shows an example in which each of the four broken portions of the leg portion 14 is thinned so that appropriate elastic deformation can be performed even when a relatively hard material is used. I have.

The above-described method of elastically changing the thickness of the distal end portion 22 utilizes the elastic characteristics of the material of the leg portion 14 itself. In such a case, the thickness of the distal end portion 22 can be elastically changed by adding an elastic member. For example, there is a method of inserting a rubber-like elastic body, a coil spring, or the like into the gap W of the crack in the leg portion 14.

As shown in FIG. 23, a bulletin board 50 in which holes arranged in a rectangular outline are provided in at least two places is particularly useful for displaying a poster for an election. If the poster of each candidate is assigned to each hole group having a rectangular contour, and the poster is fixed in accordance with the arrangement of the holes 20, it is possible to automatically display the posters arranged vertically and horizontally. An appropriate arrangement location of the holes 20 may be selected according to the size of the poster and fixed with the fastener 10. In FIG. 24, holes 20 are arranged in two rows to outline a rectangle. Although the range of the size NO of the posted article 18 that can be posted is limited to some extent, there is an advantage that the cost of opening the hole 20 is reduced.

In addition, the present invention provides various improvements, corrections, and modifications based on the knowledge of those skilled in the art with respect to the material and shape of the bulletin board and the fastener, the procedure of the bulletin fixing method, and the like without departing from the spirit of the present invention. It can be carried out in such a manner.

Embodiments of the present invention will be described in detail below.

Example 1 A fastener 10 similar to that shown in FIG. 7 and a bulletin board 16 similar to that shown in FIG. 5 were produced. The fastener 10 is made of polypropylene, the thickness of the disk-shaped head 12 is 2 mm,
The diameter was 10 mm, the length of the leg 14 was 15 mm, the thickness of the middle part was 3 mm, and the thickness of the tip part 22 was 4 mm. The leg 14 has a gap of 1 m along its longitudinal direction.
It is divided into two by the crack of m. The bulletin board 16 is made of plywood having a thickness of 10 mm and has three holes 20 having a diameter of 3.5 mm.
They are provided vertically and horizontally at a pitch of 0 mm.

Next, a paper poster was posted using the fastener 10 and the bulletin board 16 of this embodiment. As shown in FIG. 1, the head 12 of the fastener 10 is pressed with a finger, penetrates a notice (poster) 18, and the leg 14 penetrates into the hole 20 of the bulletin board 16. The poster (poster) 18 was firmly fixed as shown in FIG.

[0045]

According to the bulletin fixing method according to the present invention,
Since the legs of the fastener are inserted into holes provided in the bulletin board in advance, the fixing operation can be performed with relatively small force. Further, since only the holes provided in advance are used, the bulletin board is not newly damaged.

Further, if the front end of the fastener leg portion that passes through the hole of the bulletin board and protrudes to the back of the bulletin board can be elastically deformed so as to be thicker than the hole of the bulletin board, the front end is formed in the hole. The fasteners do not come off or loosen.

Furthermore, if the shape of the tip of the fastening leg protruding from the back of the bulletin board and in contact with the hole in the bulletin board is tapered toward the tip of the leg, the tip is restored to its original shape. Because it has received an elastic repulsive force trying to return to its thickness,
Fasteners are always pulled to the bulletin board side. As a result, the notice is always strongly sandwiched between the fastener head and the bulletin board, and the notice can be fixed more stably.

If the tip of the leg of the fastener projecting from the back of the bulletin board is a screw having an outer diameter larger than the hole diameter of the bulletin board, the fastener cannot be returned due to the screw thread. No more loosening.

Also, if the bulletin board 16 is fixed to the bulletin board 16 by sandwiching the posted matter between the recessed section or the convex section provided on the bulletin board 16 and the convex section or the concave section provided on the pressing member, slip on the bulletin board surface can be prevented. It can be fixed stably because it is restrained, and by the pressing of the convex portion, the notice is pulled sideways and becomes tensed, so that the notice is loosened and the notice can be made tight. .

Further, if the tip of the leg is formed to be broken along the longitudinal direction of the leg, the leg becomes thinner easily when passing through the hole of the bulletin board, and quickly returns to its original thickness after passing. Since it is possible to return, the article can be firmly fixed by pressing with a relatively small force.

Further, if the group of holes arranged in a rectangular outline is a bulletin board provided in at least two places, a rectangular sign is assigned to each group of holes and posted, so that they are arranged neatly. This makes it possible to provide a bulletin board that is particularly suitable for posting an election poster.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating an example of a method for fixing a posted object according to the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which a posted object is fixed by the fixing method described in FIG. 1 according to the present invention.

FIG. 3 is a front view according to the present invention, which further explains a fixed state of the article shown in FIG. 2;

FIG. 4 is an enlarged front view of the bulletin board shown in FIG. 3 according to the present invention.

FIG. 5 is a front view showing another example of the bulletin board according to the present invention.

6 is a longitudinal sectional view schematically illustrating an example of a method of mounting the bulletin board shown in FIG. 5 according to the present invention.

7A and 7B show an example of a fastener according to the present invention, wherein FIG. 7A is a front view and FIG. 7B is a bottom view.

FIG. 8 is a front view showing another example of the fastener according to the present invention, wherein FIG. 8 (a) is an example in which a projection is provided on the edge of the head, and FIG. 8 (b) is a thicker head. It is an example.

FIG. 9 is a front view showing another example of the fastener according to the present invention, in which the tip of a leg is sharpened.

FIG. 10 is a vertical cross-sectional view illustrating another example of the posted matter fixing method according to the present invention.

11 is a longitudinal sectional view for explaining another example of the method for fixing a posted matter according to the present invention, wherein FIG. 11 (a) shows a state at rest and FIG. 11 (b) shows lateral pressure applied to the head. It shows the state that it was turned on.

FIG. 12 is a front view illustrating another example of the posted matter fixing method according to the present invention.

FIG. 13 is a front view illustrating another example of the posted matter fixing method according to the present invention.

FIG. 14 is a longitudinal sectional view for explaining another example of the posted matter fixing method according to the present invention.

FIG. 15 is a front view showing another example of the fastener according to the present invention.

FIG. 16 is a longitudinal sectional view schematically showing another example of the fastener according to the present invention.

FIG. 17 is a longitudinal sectional view for explaining another example of the posted matter fixing method according to the present invention.

FIG. 18 is a rear view showing the fastener shown in FIG. 17 according to the present invention.

19 (a) and 19 (b) illustrate another example of the method for fixing a posted object according to the present invention. FIG. 19 (a) is a front view and FIG. 19 (b) is a cross-sectional view.

FIG. 20 is a longitudinal sectional view illustrating another example of the method for fixing a posted object according to the present invention.

FIG. 21 is a front view illustrating another example of the posted matter fixing method according to the present invention.

FIG. 22 is a cross-sectional view of the tip of the leg showing another example of the fastener according to the present invention, wherein FIG. 22 (a) shows an example in which three parts are broken, and FIG. FIG. 3 (c) shows an example in which four cracks have been made.

FIG. 23 is a front view showing another example of the bulletin board according to the present invention.

FIG. 24 is a front view showing yet another example of the bulletin board according to the present invention.

25A and 25B are schematic views illustrating an example of a method of fixing a posted matter according to a conventional example, wherein FIG. 25A is a perspective view illustrating a thumbtack, and FIG. 25B is a front view illustrating a fixed state of the posted matter. .

[Explanation of symbols]

 10, 11, 38, 40, 44: Fasteners 12, 102: Head 14, 106: Legs 16, 50, 104: Bulletin board 18: Notice 20: Hole 22: Tip 24: Wall 26: Spacer 28: Screw 30: Intermediate part 32: Projection 34: Packing 36: Base part 42: Pressing member 46: Convex part 48: Concave part 101: Thumbtack 108: Poster

Claims (10)

[Claims] 1. A post comprising a head and a leg, wherein the leg is penetrated into a bulletin board, and the leg is penetrated into a hole provided in a bulletin board to fix the bulletin board. Notice fixing method. 2. Penetrating a hole provided in the bulletin board,
2. The bulletin board according to claim 1, wherein a tip of the leg protruding from the back of the bulletin board is deformed into a shape larger than a diameter of a hole provided in the bulletin board by elastic repulsion. Fixing method. 3. A shape of a portion of a tip end of a leg projecting from the back of the bulletin board, which is in contact with a hole provided in the bulletin board,
3. The method for fixing a posted object according to claim 2, wherein the posted object is tapered toward the tip of the leg. 4. Penetrating a hole provided in the bulletin board,
2. The method according to claim 1, wherein a tip of the leg protruding from the back of the bulletin board is a screw having an outer diameter larger than a diameter of a hole provided in the bulletin board. 5. A posted matter is sandwiched between a concave portion or a convex portion provided on a bulletin board and a convex portion or a concave portion provided on a pressing member.
A bulletin fixing method, comprising fixing a bulletin on a bulletin board. 6. A fastener comprising a head and a leg,
A notice fastener which is a fastener used to fix the notice by penetrating the leg through the notice and penetrating a hole provided in the bulletin board. 7. The bulletin board according to claim 6, wherein a tip portion of the leg portion is thicker than a middle portion, and the tip portion is configured to be reversibly thin. Fasteners. 8. The notice fastener according to claim 7, wherein the tip of the leg is broken along the longitudinal direction of the leg. 9. A bulletin board, wherein a group of holes arranged in a rectangular outline is provided in at least two places. 10. A bulletin board provided with a bulletin board fastener, wherein the bulletin board fastener comprises a head and a leg, and the leg is penetrated through the bulletin board to form a hole in the bulletin board. A notice fastener, which is used to penetrate and fix the notice.