JPH0319799Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) The present application is a device that allows objects to be fixed, such as shelf brackets, to be easily and reliably attached to a so-called soft wall surface made of gypsum board, A, L, C, boards, etc., and is also removable. The purpose is to provide an easy article fixing device.

Since ancient times, there have been various fixing devices known as thumbtacks for fixing cardboard-sized objects to walls, but these days, soft materials such as plywood and plasterboard are used for indoor walls, and even cardboard-sized printing paper and paintings are also used with thumbtacks. Then it will loosen and fall. The present application has developed a fixing device with an elegant appearance that can be used not only for things like cardboard but also for brackets that support shelves as objects to be fixed.
This is a practical improvement of No. 156796 to further serve the purpose, and its structure will be summarized below.

(Structure of the invention) First, hard and soft synthetic resin materials were selected as the material in order to achieve mass productivity, cost reduction, and freedom of color selection. The fixture consists of a cylindrical fixture body and a cap, and when in use it looks just like a round nut, giving the impression of a knob to harmonize with the interior.

The main body of the fixing device is cylindrical in shape, and its head is an integral piece with the top of a regular cone cut horizontally, and guide holes for three or more thin nails are provided on the slope of the head,
In order to converge near the center of the bottom of the main body,
A through hole is provided diagonally from a position symmetrical in the same dimension with respect to the center line of the main body.

Furthermore, a protruding portion of a thick circular plate approximately 1/2 of the outer diameter of the main body is integrally provided at the center of the bottom surface of the fixture body, and the plurality of thin nails are attached to this thick circular plate. They converge while maintaining equal gaps within the protruding plane. Note that in this specification, the thick disk is not necessarily limited to an exactly perfect circle.

The cap that covers the fixing device body has a cylindrical shape that completely covers the fixing device body except for the protruding thick disk, and means for fixing the main body and the cap to each other by elastic fitting is adopted. However, in order to prevent the cap from coming off, a small protrusion like a string is provided on the outer periphery of the main body.
It is free to form a recess on the corresponding inner circumferential surface of the cap. The details of the embodiment will be explained below with reference to the drawings.

〔Example〕

The first part is an enlarged view mainly for explaining the structure of the present application.
To explain with a diagram, the fixture consists of a main body A, a cap B, and a thin nail C. Fixture main body A (hereinafter referred to as main body) is a one-piece hard synthetic resin product made of A, B, and S resins, and its body is cylindrical, and its head 1 is a regular cone with the top horizontally It has the shape of a truncated inverted needle, and the top part 1' of the embodiment is flat. However, the main reason for cutting off the top of the regular cone was to reduce the overall length of the article fixing device, and to remove functionally useless parts, such as a slightly curved surface or a rounded edge on the periphery. You are free to add .

The slope of the head 1 is formed at an angle of 60° with respect to the bottom surface 4 so that the guide holes 3 for the three thin nails C converge near the center of the bottom surface of the main body from equally spaced positions on the same circumference. It passes through.

Further, from the center of the bottom surface 4, a thick circular plate 5 having an outer diameter slightly smaller than 1/2 of the outer diameter of the main body projects integrally.
The three guide holes 3 are formed on the surface of the thick disk 5 having an outer diameter at equal intervals and at symmetrical positions with respect to the center as shown in FIG. The cap B has a cylindrical shape made of soft polyethylene resin, and the inner height of the cylindrical shape is sufficient to completely cover the main body A excluding the thick disk 5.

In this embodiment, the outer diameter of the main body A is 8 mm, the outer diameter of the thick disk 5 is 3.2 mm, the total height of the main body A is 6.5 mm, and the wall thickness of the inner thick disk is 1 mm. . That is, the main body A is smaller than that shown in FIG. 2, which is an enlarged view.

(Function and effect) In order to attach the fixed object 7 to the wall 6 made of plasterboard as shown in FIG. Since the thick disk 5 of the fixture body is inserted into the hole 5', the fixture body A is small and does not shift from the intended position even though it is made of A, B, and S resin and is slippery. . Therefore, if three stainless steel flat-headed nails C are driven evenly from the head slope 2, the nails C will converge on the protruding surface of the thick disk 5 of the bottom part 5 of the main body A as shown in FIG. , the three nails C spread inside the gypsum board 6 like the stays of an umbrella, and the main body A is securely fixed to the wall 6 and will not come off.

As described above, according to the present invention, it has become possible to fix shelf brackets 8 and the like to the wall surface 6 of the gypsum board as shown in FIG. 4, which was previously impossible. Also, it can be used not only on walls but also on ceilings. The external dimensions are small, and after installation, the cap B is elastically fitted into the main body A, so it can be installed with a single touch. Furthermore, since the material is synthetic resin, the cap can be easily supplied in various colors, contributing to the aesthetic appearance of the room.

The shear strength when the article fixing device of the example is attached to a gypsum board wall is 7 kg as shown in Figure 3a, and the pull-out strength when similarly attached to a ceiling is 2.7.
It was confirmed through experiment that it was Kg. The above strength is a significant improvement that cannot be imagined using conventional methods. The present application can be widely used in practice in terms of its performance, usability, and appearance. Note that the above-mentioned shear and pull-out strengths are both 1/3 of the strength at break.

[Brief explanation of the drawing]

FIG. 1 is an explanatory enlarged exploded side view of the present invention. FIG. 2 is an enlarged external view of the embodiment, in which a shows the appearance with a thin nail inserted into the fixture body, B shows an external view of the cap, and C shows the cap attached to the fixture body. FIG. 3 is an explanatory diagram showing strength, where a indicates shear strength and b indicates pull-out strength. FIG. 4 shows an example of the use of the present invention. A...Body, B...Cap, C...Thin nail, 1
...Head, 2...Slope, 3...Guide hole, 4...
Bottom surface, 5... Thick disk, 6... Wall surface, 7... Object to be fixed.

Claims (1)

[Scope of Claim for Utility Model Registration] The article fixing device consists of a fixing device body A made of hard synthetic resin such as A, B, and S resins, a cap B made of soft synthetic resin such as polyethylene resin, and a thin nail C. The fixture body A has a cylindrical shape, and its head 1 is an integral piece in the shape of an inverted mortar, with the top of a regular cone cut horizontally.
In the slope 2 of the head, three or more guide holes 3 for thin nails are arranged at equal intervals on the same circumference of the slope so that they converge near the center of the bottom of the main body. A thick disk 5 having a diameter of approximately 1/2 of the outside diameter of the main body is integrally protruded from the center of the bottom surface of the fixing device body, and the object to be fixed is passed through the fixing device body with a thin nail. A thumbtack-sized article fixing device for soft walls that is fixed to a wall surface and cap B is elastically fitted thereto.