JP2804536B2 - Multi-layer transparent plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to an improvement in a spacer disposed at an end portion of a double glazing and a connecting member of adjacent spacers.

2. Description of the Related Art A multi-layered structure in which adjacent spacers are connected by inserting legs of a connecting member bent in a wavy shape into the ends of a rectangular tubular spacer which is interposed between a plurality of transparent plates and maintains a predetermined spacing. There are Japanese Utility Model Publication No. Sho 41-19798 and Japanese Patent Application Laid-open No. Sho 59-38486 as those providing a transparent plate.

According to the gazette, a connecting member having two legs bent in a substantially right angle and extending in a wave-like manner, a square tubular spacer in which the legs of the connecting member are inserted into ends and connected, Discloses a transparent lid made of a transparent plate opposed to each other via
The spacer and the transparent plate are bonded with an adhesive.

On the other hand, in the publication, two transparent plates opposed to each other with an interval, a frame member interposed between the peripheral edges of the opposing surfaces of the transparent plate, and the transparent plate and the frame member are mutually connected. And a heat insulating gas having a specific gravity greater than air sealed in a space defined by the transparent plate and the frame member. After the sealing, the insulation gas is prevented from leaking from the passage.

Problems to be Solved by the Invention In both of the above technologies, spacers positioned adjacent to each other are connected by a connecting member, and the spacers formed in a ring by this connection are bonded to a transparent plate by an adhesive. But,
In order to secure the airtightness between the ends of the connected spacers, particularly, it has been necessary to form them so that the ends are in contact with each other. Also. In the above, the outer dimensions of the spacer that is connected and formed in an annular shape are made smaller than the outer dimensions of the transparent plate, and a sealing material having an adhesive property is provided at a portion between the end of the transparent plate and the outer periphery of the spacer. It is to be arranged,
Since the spacer has a rectangular cross-sectional shape, the outer peripheral shape of the spacer is flat and not flat (see Japanese Utility Model Publication No. 58-8746). However, there is a problem that the required amount of the sealing material is large.

Furthermore, when the outer dimension of the spacer is formed smaller than the outer dimension of the transparent plate, positioning of the spacer is performed when the spacer is adhered to the transparent plate at a constant distance from its end. And a temporary fixing member such as a double-sided tape is required to temporarily fix the spacer to the transparent plate, which is a factor that impedes workability and reduces the production cost of the multilayer transparent plate. Had become. Also,
The cross-sectional shape of the leg material inserted into the end of the spacer is formed differently from the cross-sectional shape of the spacer while the leg material is formed in a corrugated shape. As a result, a gap is easily formed between the spacer and the connecting member, which tends to impair the airtightness between the spacer and the connecting member, and there is a problem that it is very difficult to perform a sealing work between the spacer and the connecting member. Was. When the work of sealing the spacer and the connecting member is insufficient, there is a fragility in which moisture enters from the insufficient portion.

In view of the above, the present invention provides a multi-layer transparent plate which solves the above-mentioned problems and improves the airtightness between the spacer and the connecting member and the airtightness between the spacer and the transparent plate.

[Configuration of the invention]

Means for Solving the Problems The multilayer transparent plate of the present invention comprises a plurality of transparent plates opposed to each other at intervals, and a connecting member having two legs orthogonal to each other at the end of a hollow straight tubular spacer. An interval holding frame that is inserted between the parts and is annularly connected and is interposed between the peripheral edges of the opposing surfaces of the transparent plate to maintain the interval, and an adhesive that interconnects the transparent plate and the interval holding frame. And a heat insulating space defined by the connection of the transparent plate and the spacing frame. Each of the spacers straddles a pair of parallel contact portions abutting on the peripheral edge of the transparent plate and the corresponding contact portion. A projection projecting outwardly to form a recess between the transparent plate and the transparent plate, wherein the leg of the connecting member has a bent portion bent in a wavy shape, and each of the spacers connected to the bent portion. A fitting portion that matches the cross-sectional shape of And a filling portion for filling the adhesive by forming a gap between the concave portion and the gap, and making the outer dimensions of the spacing frame equal to the outer dimensions of the transparent plate.

From what has been equal to the external dimensions of the external dimensions and the transparent plate work for spacing the holding frame, the height of the Kankakuko portions impairing through property at the peripheral edge of the transparent plate (h ₃₎ minute with only becomes, the transparent plate It acts to increase the see-through area.

In addition, by forming the fitting portion in the connecting material, the connecting material is firmly fitted and fixed to the spacer, and further, by forming the filling portion, the adhesive filled in the filling portion is filled in the protrusion of the spacer. It also wraps around the side surface, and the gap connected to the recess is filled with the adhesive, which acts to maintain the airtightness between the connecting member and the spacer.

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a multi-layer transparent plate used for refrigeration equipment such as a frozen or refrigerated showcase and a refrigerator, and a window or a transparent door of a general house.

The multi-layered transparent plate 1 is provided between two transparent plates 2, 3 made of rectangular glass, and interposed between the peripheral edges of the opposing surfaces of the two transparent plates 2, 3, so that the transparent plates 2, 3 are spaced from each other. t ₁ , an interval holding frame 4 for holding in parallel with the transparent board 2, a transparent sealing material 5 as an adhesive having an adhesive property such as thiochol for interconnecting the transparent plates 2 and 3 and the interval holding frame 4, , 3 and a heat insulating space 6 defined by the connection of the spacing frame 4.

The spacing frame 4 includes four hollow straight tubular spacers 10 and four connecting members 11 having two legs 12 and 12 orthogonal to each other.
The legs 12, 12 are inserted into the ends of the spacers 10, and the spacers 10 are connected in a ring.

Each of the spacers 10 forms a hollow portion 15 by extrusion or bending of a metal such as aluminum or SPG steel plate, and has a longitudinally extending ventilation hole communicating the heat insulating space 6 and the hollow portion 15. The inner wall 17 is formed with a top wall 18 facing the inner wall 17, and a pair of side walls 19, 19 facing each other. Each side wall 19 has a contact portion 21 that contacts the peripheral edge of the transparent plates 2 and 3,
An outer portion 22 is formed outside the contact portion 21 so as to be separated from the transparent plate 2. The outer portions 22, 22 and the top wall 18 straddle the contact portions 21, 21 and protrude outward to form a transparent plate.
A projection 25 is formed between each of the projections 25 and 23 to form a recess 23.

Numeral 26 denotes a granular desiccant filled in a large amount in each spacer 10, and is composed of, for example, a mixture of fast-drying silica gel having a fast moisture absorption and slow-drying molecular sieves having a slow moisture absorption.

The connecting member 11 has two legs 12 and 12 made of a synthetic resin, and each leg 12 has a bent portion 30 that bends in a wave shape, and a hollow portion 15 of each spacer 10 that is connected to the bent portion 30. A fitting portion 31 conforming to the cross-sectional shape of the spacer, and a recess formed between the inner surface of the projection 25 of the spacer 10 and the fitting portion 31 at the corner portion where the legs 12, 12 intersect and are inserted into the spacer 10. Forming a gap 32 connected to the place 23 to form a sealing material 5
And a filling unit 33 for filling the pressure.

Incidentally, the bent portion 30 the height h ₂ between the portion and the valley portion of the mountain is bent in a wave shape, the height of the top portion 18 and the inner wall 17 of Kankakuko 10 h ₁
It is set to be slightly larger than that, so that the spacer 10 is pressed and deformed in the hollow portion 15 when it is inserted into the end, and can be prevented from falling out of the hollow portion 15 by its elastic return force.

Also, by increasing the thickness t ₁ of the corner portions 2 times the thickness T of Kankakuko 10 than the thickness t ₂ of the fitting portion 31 by (2T).
In this case the thickness t ₂ is made equal to the width of the hollow portion 15.

 The multilayer transparent plate 1 is manufactured by the following manufacturing method.

After assembling the spacing frame 4 by connecting the spacers 10 to each other with the respective connecting members 11, the spacing member 10 is composed of a rectangular substrate 40 and eight guides 41 erected on the outer peripheral surface of the substrate 40. The transparent plate 2, the space holding frame 4, and the transparent plate 3 are sequentially installed on the assembly jig 42 so that the edges of the transparent plates 2 and 3 and the space holding frame 4 are flush with each other. Inner peripheral end face and the protrusion 2 of the spacing frame 4
A resin-based sealing material 5 such as thiochol is filled in the two annular recesses 23 formed by the outer surfaces 5 and adhered to the respective surfaces to obtain a finished product in which the airtightness of the heat insulating space 6 is maintained.

According to the above-described configuration, the protrusion 25 is formed on the spacer 10 that forms the space holding frame 4, and the space holding frame 4 and the transparent plate 2,
By making the outer dimensions of each of the three equal, the annular recess 2 formed by the projection 25 and the inner peripheral edge of the transparent plates 2 and 3
It is sufficient to fill only 3 with the sealing material 5 as an adhesive,
The required filling amount of the sealing material 5 can be reduced as compared with the related art.

Further, by forming the fitting portion 31 and the filling portion 33 on the leg 12 of the connecting member 11, when the connecting member 11 is inserted into the spacer 10, it is firmly fitted and fixed. The recess 23 and the gap 32 are adhered in a continuous manner by the filled sealing material 5, so that the connecting member 11 and the spacer 10 are joined while maintaining the airtightness. The airtightness of the part can be improved.

〔The invention's effect〕

As described above in detail, according to the present invention, since the outer dimensions of the spacing frame and the transparent plate are made equal, the portion that impairs the transparency at the peripheral edge of the transparent plate is equivalent to the height of the spacer. Thus, the see-through area of the multilayer transparent plate can be increased.

In addition, by forming the fitting portion in the connecting material, the connecting material can be firmly fitted and fixed to the spacer, and by forming the filling portion, the adhesive is formed on the inner surface of the projecting portion connecting to the recess. The connection member and the spacer can be connected to each other while maintaining airtightness.

[Brief description of the drawings]

Each drawing shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a corner portion of a multilayer transparent plate, FIG. 2 is a perspective view of a spacing frame, and FIG. 3 is AA in FIG. FIG. 4 is a sectional view of the multilayer transparent plate corresponding to the line BB, FIG. 5 is a view corresponding to FIG. 4 using a spacer and a transparent plate, FIG. 6 is a schematic perspective view of a connecting member, FIG. 7 is an exploded perspective view showing a process of assembling the multilayer transparent plate. DESCRIPTION OF SYMBOLS 1 ... Multilayer transparent plate, 2,3 ... Transparent plate, 4 ... Space holding frame, 5 ... Adhesive, 6 ... Insulated space, 10 ... Spacer, 11
... connecting material, 12 ... leg, 21 ... contact part, 23 ... recess,
25 ... Projection, 30 ... Bend, 31 ... Fitting, 32 ... Gap, 33 ... Filling.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E06B 3/66 C03C 27/06 101

Claims (1)

(57) [Claims] A plurality of transparent plates opposed to each other at intervals;
A connecting member having two legs that are orthogonal to each other is inserted into the end of a hollow straight tubular spacer, and is connected in a ring shape to be interposed between the peripheral edges of the opposing surfaces of the transparent plate to maintain the spacing. In the multilayer transparent plate including a spacing holding frame, an adhesive for connecting the transparent plate and the spacing holding frame to each other, and a heat insulating space defined by the connection of the transparent plate and the spacing holding frame, Has a pair of parallel contact portions abutting on the peripheral edge of the transparent plate and a projection that straddles the corresponding contact portion and protrudes outward to form a recess between the transparent plate and The leg of the connecting member has a bent portion bent in a wavy shape, a fitting portion connected to the bent portion and conforming to the cross-sectional shape of each spacer, and a spacer inner surface formed at a corner portion and inserted into the spacer. And a filling part for forming the gap connected to the recess between the fitting part and the filling part to fill the adhesive. , Multilayered transparent plate formed by equal and external dimensions of said transparent plate and external dimensions of the spacing holding frame.