JPS5931923Y2 - Fixed structure of synthetic resin board - Google Patents

Description

[Detailed description of the invention] This invention is designed to fix synthetic resin boards to frame materials such as translucent soundproof walls and large signboards using synthetic resin boards, or to use synthetic resin boards as windshield boards for balconies. This relates to a fixing structure when fixing to a support or the like.

Conventionally, synthetic resin plates such as methacrylic resin, polycarbonate resin, or vinyl chloride resin have been used quite widely for the above-mentioned purposes by being fixed to members to be fixed, such as frame members and supports.

However, these synthetic resin materials have different physical properties compared to wood, metal, glass, etc., which have been widely used as building materials for a long time, and therefore cannot be handled in the same way as conventional building materials.

One of these is that synthetic resin materials have a larger coefficient of linear expansion than other materials and are more susceptible to expansion and contraction due to heat and temperature.

If this point is ignored during construction, there is a risk that the resin board may be deformed, the fixed parts may be damaged, or even fall off.Therefore, various measures have been taken when installing synthetic resin boards. This is the current situation.

Particularly when fixing a synthetic resin plate to a member to be fixed using bolts or nuts, there is often a tendency to tighten the resin plate too tightly, and therefore movement due to expansion and contraction of the resin plate is not allowed, resulting in the above-mentioned drawbacks. is likely to occur.

In view of this situation, the present invention was completed after studying a fixing structure that is reliable and easy to install. When fixing the synthetic resin plate 1 having the following properties to the member 2 to be fixed with bolts 6 and nuts 7, a hole with a diameter slightly larger than the diameter of the bolt is formed between the member 2 to be fixed and the retaining metal fitting 3 that comes into contact with the back surface of the member 2. The resin plate 1 is sandwiched through the elastic packing 4.4 having a diameter of 4a, and the fixing through hole 1a is provided with a spacer 5 for preventing over-tightening having a length approximately equal to the fixing width when tightened. The fixing structure of the synthetic resin plate is characterized in that a bolt 6 is inserted and a nut 7 is screwed and fixed from the opposite side.

The present invention will be explained below with reference to the drawings of an embodiment. This example shows an example in which a transparent plastic or resin plate is fixed to a window frame-shaped member by tightening bolts and used as a kind of soundproof wall. ing.

In FIG. 1, reference numeral 1 denotes a synthetic resin plate made of methacrylic resin, polycarbonate resin, vinyl chloride resin, etc., and transparent or colored plates are used depending on the purpose.

A suitable number of fixing holes 1a, which are slightly larger in diameter than the diameter A of the bolt 6, as shown in FIGS. 2 and 3, are bored in the fixing locations of the synthetic resin plate 1.

In the present invention, such a synthetic resin plate 1 is fixed to a member 2 to be fixed such as a frame material or a support using bolts and nuts.The member 2 to be fixed in this example has a substantially U-shaped cross section as shown in FIG. The situation is as follows.

A bolt insertion hole 2a is formed in the front face portion 2b of the member to be fixed, and the synthetic resin plate 1 is brought into contact with the back side of the bolt insertion hole 2a to be fixed.

That is, a synthetic resin plate 1 with elastic gaskets 4, 4 bonded to both sides is applied to the back surface of the front part 2b of the member 2 to be fixed, and a retaining metal fitting 3 approximately equal in thickness to the thickness of the member 2 to be fixed is placed on this back surface. come into contact with

Then, in this state, a bolt 6, a nut 7 made of nylon or the like, and a spacer 5 for preventing over-tightening are inserted as shown in FIG.

The state in which the bolt 6 and nut 7 are screwed together in this way is the third
It is shown in detail in the figure.

Elastic packings 4, 4 are interposed on both sides of the synthetic resin plate 1, and in this example, a band-shaped synthetic rubber foam is interposed over the entire length of the member 2 to be fixed.

Further, the holding member 3 which is brought into contact with the back side of the front face portion 2b of the member to be fixed is also made of a plate-like member, and is in contact with the entire length of the member to be fixed 2.

At the point where the bolt 6 is inserted, a spacer 5 for preventing over-tightening is inserted along with the bolt 6, and the length is approximately equal to the fixing width when the bolt 6 is tightened. It is designed not to be too much.

For the diameter A of the bolt 6, the fixing hole 1a of the synthetic resin plate 1
has a slightly larger diameter, but this difference in diameter is due to the synthetic resin plate 1
This is because it allows movement when it expands and contracts.

Therefore, this difference in diameter is mainly determined by the coefficient of linear expansion of the synthetic resin plate 1 used.

The diameter C of the hole 4a of the elastic packing 4 is also larger than the bolt diameter A, and this is to allow the elastic packing 4 to move or deform smoothly as the synthetic resin plate 1 moves. .

Note that 8 in the figure is a washer to be inserted when screwing the bolt 6 and nut 7, respectively, but these are omitted due to the relationship with the diameters of the bolt insertion hole 2a of the member to be fixed and the hole 3a of the holding fitting. It is also possible.

Since the present invention is fixed with such a structure, the bolt 6
Even if the nut 7 is tightly screwed, the presence of the over-tightening prevention spacer 5, which has a length approximately equal to the fixing width, prevents the nut from being over-tightened more than necessary. No more force than necessary is applied.

Therefore, even if the synthetic resin plate 1 expands or contracts due to temperature changes, etc., the fixed portions allow movement within a certain range, and the synthetic resin plate 1 will not be deformed or damaged.

Although the fixing structure of the present invention has been explained above using an example in which it is applied to a type of soundproof wall, the present invention is not limited to such an example. It can also be applied when fixing to a pillar of a balcony, etc.

Since the present invention has the above-mentioned structure, it is possible to firmly fix the synthetic resin plate to the member to be fixed, and also allows the synthetic resin plate to move due to expansion and contraction. It has the advantage that it can absorb the applied force and prevent deformation and damage of the synthetic resin plate, and that it has a simple structure and can be easily constructed.

[Brief explanation of drawings]

The drawing shows an example of applying the present invention to a soundproof wall.
The figure is a perspective view, Figure 2 is an enlarged sectional view taken along the line X-X in Figure 1, Figure 3 is an enlarged sectional view of the fixed part, and Figure 4 is a perspective view of the state before screwing the bolt and nut together. It is. DESCRIPTION OF SYMBOLS 1... Synthetic resin plate, 1a... Through hole for fixing, 2... Member to be fixed, 3... Holding metal fitting, 4...・Elastic packing, 5... Spacer to prevent over-tightening, 6... Bolt, 7...
...Natsuto.

Claims (1)

[Scope of utility model registration request] When fixing a synthetic resin plate 1 having a fixing hole 1a with a diameter slightly larger than the bolt diameter to a member 2 to be fixed using bolts 6 and nuts 7, the member 2 to be fixed and a holding fitting 3 that comes into contact with the back side of the plate 1 are In between, holes 4 each have a diameter slightly larger than the bolt diameter.
The synthetic resin plate 1 is sandwiched between the elastic packings 4, 4 having a diameter of 1.a, and a spacer 5 for preventing over-tightening having a length approximately equal to the fixing width when tightened is provided in the fixing hole 1a.
A fixing structure for a synthetic resin plate, characterized in that a bolt 6 is inserted thereinto, and a nut 7 is screwed together from the opposite side to fix the plate.