JP3283199B2 - Hanging structure of glass plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass plate suspension structure for fitting a glass plate, particularly a large-sized glass plate, to a building by a suspension method.

[0002]

2. Description of the Related Art Japanese Utility Model Publication No. 52-3258 invented by the present applicant discloses a method in which a pair of holding plates are hung on a holding bolt, and a pair of holding plates are engaged between the holding plates. It has been proposed that both surfaces near the upper end of the glass plate be sandwiched via the metal plate holding bracket and the glass plate is suspended and supported.

[0003] In the proposed example, as described above, both sides near the upper end of the glass plate are sandwiched by a frictional force between rubber members for holding the glass plate with frictional force. In suspending the plate for a long period of time, there is a fear that the glass plate may slide down due to deterioration, deterioration, reduction in frictional force, etc. of the rubber plate at the holding portion.

On the other hand, for example, Japanese Utility Model Publication No. 45-21459 discloses that a plate-like body such as a glass plate having a holder corresponding to the above-mentioned bracket adhered to both sides is inserted into a holding member having a horseshoe cross section. It is disclosed that the plate-like body is supported by engaging with the side surface of the glass plate. Alternatively, JP-A-8-4430 discloses that an upper edge portion of a glass plate is held by a holding member via a metal fitting such as a tapered material. It is disclosed that the holding member is further connected to a hanging member, and the holding member and the hanging member are not provided with a hook portion.

[0005] In these disclosed examples, it is disclosed that a glass plate is adhered to a metal member such as a holding member or a taper material with an adhesive. It has not been.

SUMMARY OF THE INVENTION The present invention provides a structure for suspending a glass plate to a frame via a suspending means and a suspending device, wherein the glass plate clamping metal plate and the glass plate have increased adhesion durability and improved durability. Is provided.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a holding device is appropriately suspended from a hanging means, and the holding device is bonded to both surfaces near the upper end of a glass plate and has a pair of engaging portions with the holding device. In the structure for suspending the glass plate to the skeleton by pressing and holding the glass plate through the glass plate clamping metal, the glass plate clamping metal has an adhesive surface with the glass plate having an average roughness of 6.3 μm.
It has a rough surface as described above, and a radius of curvature of 1 mm or more is provided at the end face of the metal fitting in contact with the glass plate.
Adhesive for bonding the glass plate clamp to the glass plate
Is a room temperature curing type, at room temperature (20 ° C) Tensile shear strength
(τo, 20) is 10 N / mm ² or more, so as to exhibit the strength
Rise time of 210 minutes or less, and
+ 80 ℃ or less based on high and low temperature test method for vehicle parts
Repeated cooling and heating due to repeated temperature rise and fall between -40 ° C
Tensile shear strength after 10 cycles of treatment (τa)
Is 0.8 × τo to the tensile shear strength, with an adhesive of 20 or more.
This is a hanging structure of a certain glass plate. 1 and 2
As shown in FIG. 1, the holding tool 1 is provided at the upper position of a pair of opposed holding plates 2, 3, respectively, with the tip convex protrusions 4,
And the concave protrusions 5 at the tip end are formed so as to be spaced from each other, and the suspension shaft 6 inserted through the through hole in the upper central portion of the holding plates 2 and 3 is inserted and locked into the ring-shaped hook portion 8 at the lower end of the suspension means 7. Protrusions 9 and 10 are provided at the lower ends of the holding plates 2 and 3 to protrude inward, and a glass plate holding fixture 13 having fitting concave grooves 11 and 12 is provided.
In addition to engaging with 14, the glass plate is clamped by tightening tightening bolts and nuts 15, 16 inserted through the through holes at the lower portions of the sandwiching plates 2, 3 .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. 1A is a front view of the glass plate suspension structure of the present invention, FIG. 1B is a side sectional view corresponding to FIG. 1A, and FIG. 2 is an enlarged view of the relation between the glass plate clamping metal and the glass plate (shown on one side). It is the side sectional view shown as.

In FIGS. 1A and 1B, reference numeral 7 denotes a hook which is hooked on a beam L of a skeleton by a suspension means.
Having. 1 is a holding device, which is a pair of opposed holding plates 2 and 3
The two holding plates are spaced apart by abutting the convex protrusions 4 and the concave protrusions 5 at the upper opposing positions thereof. Reference numerals 4a and 4a in FIG. 1A denote screws for locking the protruding projections 4 (or the protruding projections 5) to the holding plate 2 (or the holding plate 3).

Therefore, as shown in FIG. 1B, both holding plates are rotatable with the lines X and X as fulcrums, and the lower end is rotatable as shown by arrows Y and Y. Regardless of whether it is about 19mm from the following), it can be pinched freely.

A hanging shaft 6 is inserted through a through hole in the upper central portion of the holding plates 2 and 3, and the hanging shaft 6 is further inserted into a ring-shaped hook portion 8 at a lower end of the holding means 7 to hold both holding plates 7. The board is suspended from the suspension means.

Protrusions 9 and 10 protruding inward are provided at the lower ends of the holding plates 2 and 3, respectively, and are engaged with glass plate holding fittings 13 and 14 having fitting concave grooves 11 and 12, respectively. In addition to supporting the metal fittings, the glass plate G is clamped through the glass plate holding metal fittings by tightening the tightening bolts and nuts 15 and 16 inserted in the through holes at the lower portions of both holding plates.

In FIG. 2, the metal plate holding metal fitting (eg, 14) has a rough surface 17 to be adhered to the glass plate G, thereby exerting an anchoring action by the interposed adhesive 18 to maintain holding durability. Performance can be increased. The roughness of the adhesive surface must be 6.3 μm or more (indicated by symbol ▽▽) in the ten-point average roughness category specified in JIS B 0601-1980 “Definition and display of surface roughness”. To do
If it is smoother than that, the adhesive holding force will decrease. In addition,
Even if the average roughness exceeds approximately 20 μm, no increase in the adhesive holding force is observed.

Further, the glass plate G of the metal plate
The end surfaces 19, 19 to be bonded are subjected to a radius processing with a radius of curvature of 1 mm or more, whereby the glass plate is bent by wind pressure or earthquake, and concentrated stress is generated at a portion corresponding to the end surface portion 19. In such a case, it can be reduced and the glass plate can be prevented from being damaged. The radius of curvature 5
Even if a rounding process exceeding mm is performed, no significant effect of reducing the concentrated stress is recognized.

The suspending means and the holding member are made of a steel material which is hardly deteriorated and deteriorated for a long period of time and which can maintain a high strength. (Approximately 90 × 10 ⁻⁷ cm / ° C. for soda-lime glass), which is less than 110 × 10 ⁻⁷ cm / ° C., for example
Use alloy steel such as SUS430.

An epoxy resin or a silicone resin has conventionally been used as an adhesive between the glass plate clamping metal and the glass plate. However, glass / metal proposed in Japanese Patent Application No. 8-145616 according to the present invention by the present applicant has been proposed. Adopt an adhesive.

That is, it is a room temperature curing type,
(20 ° C.) Tensile shear strength (τo, 20) of 10 N / mm ² or more, rise time for developing the strength of 210 minutes or less, JIS
Based on the high-temperature and low-temperature test method for automotive parts specified in D 0204, the tensile shear strength (τa) after 10 cycles of repeated heat / cold tests based on repeated temperature rise and fall between + 80 ° C and -40 ° C 0.8 × against the tensile shear strength
τo, an adhesive of 20 or more, more preferably JIS K 6859 (1
980), the tensile shear strength at normal temperature
(τo, 20), a creep rupture strength (σio, 2
0) is 0.5 × τo, 20 or more, and the creep rupture strength (σioo, 20) obtained from the load when fractured for 100 hours is 0.4 × τ
The adhesive employs an adhesive of o, 20 or more, such as a two-component modified acrylic adhesive manufactured by Denki Kagaku Kogyo KK.

[0018]

Examples and Comparative Examples In Examples 1 and 2 and Comparative Examples 1 and 2, the same suspending means and clamping device (made of stainless steel) as shown in FIGS. 1A and 1B were used. The holding plate is 123 mm long and 1 width
The thickness is 20 mm and the thickness of the flat part is 12 mm. Glass plate length (height) 4
A thing with a thickness of 00 mm, a width of 500 mm and a thickness of 19 mm was adopted. The fittings for the glass plate and the adhesive are as follows.

Example 1: A metal plate holding metal fitting as shown in FIG. 2, made of SUS430, 45 mm long and 140 m wide
m, thickness 8 mm. The bonded surface was ground to have a ten-point average roughness of 7 μm, and the bonded end surface was ground to a radius of curvature of 1 mm. The adhesive used was a two-pack type modified acrylic adhesive specified in the aforementioned Japanese Patent Application No. 8-145616, and the thickness of the adhesive was about 0.2 mm.

Embodiment 2: Same as Embodiment 1, same shape and same size
A glass plate clamp made of SUS430 was used, except that the average roughness of the bonding surface was 15 μm and the radius of curvature of the bonding end surface was 2 mm. The adhesive is exactly the same as in the first embodiment.

COMPARATIVE EXAMPLE 1: Same as in Example 1, same shape and same size
A glass plate clamp made of SUS430 is used. However, the bonding surface is a smooth surface with an average roughness of 0.8 μm or less and the end surface is not rounded. The adhesive is exactly the same as in Example 1.

COMPARATIVE EXAMPLE 2 A glass plate clamping metal having exactly the same shape, dimensions and roughness as Comparative Example 1 was employed. No adhesive was used, and chloroprene rubber having a thickness of 3 mm was interposed between the glass plates and the metal plate holding fixture, and pressed.

With respect to these Examples and Comparative Examples, a load was applied between 0 and 2000 kg in increments of 250 kg, and after holding for 5 minutes, proceeding to the next step, the displacement was measured each time, and the vertical axis was the load T (kg). A displacement curve with a horizontal axis representing a displacement δ (mm) was obtained. The results are shown in FIG.

In the figure, E1 is Example 1, E2 is Example 2, C
1 is Comparative Example 1 and C2 is Comparative Example 2. As is clear from FIG. 3, in Examples 1 and 2, the amount of displacement is extremely small and stable. In Comparative Example 1, the displacement was recognized as compared with the above-mentioned Example, and in Comparative Example 2, the displacement was extremely large, and all were clearly inferior to the Example.

[0025]

According to the present invention, a means for suspending a glass plate,
In the structure in which the glass plate is hung from the frame via the holding device, the durability of bonding between the glass plate holding device and the glass plate can be increased, and the holding force of the glass plate can be significantly improved.

[Brief description of the drawings]

FIG. 1A is a front view of a hanging structure of a glass plate, and FIG. 1B is a side sectional view corresponding to FIG. 1A.

FIG. 2 is a partial side cross-sectional view showing a relation between a glass plate holding fixture and a glass plate.

FIG. 3 is a graph showing the relationship between load and displacement in Examples and Comparative Examples.

[Explanation of symbols]

1 ---- Clamping device 2, 3 ---- Clamping plate 7 ---- Hanging means 13, 14 ---- Glass plate clamping metal G ---- Glass plate

────────────────────────────────────────────────── ─── Continuation of the front page (56) References Jikai Sho 49-112024 (JP, U) Kunio Nakata and three others, “Study on the adhesion durability between glass and stainless steel”, The 34th Adhesive Society of Japan Annual Conference Lecture (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 2/72-2/74 E06B 3/54

Claims (2)

(57) [Claims] 1. A holding device is appropriately suspended from a holding means, and the holding device is adhered to both surfaces near the upper end of the glass plate, and is interposed between a pair of glass plate holding metal fittings having an engagement portion with the holding device. In the structure for suspending the glass plate to the frame, the glass plate clamping fixture has a rough surface having an average roughness of 6.3 μm or more, and what the contact end face portion of the glass plate of metal having a more rounded curvature radius 1mm
And bonding the glass plate holding fixture and the glass plate together.
The adhesive that is cured at room temperature is tensile at room temperature (20 ° C).
Shear strength (τo, 20) of 10N / mm ² or more
Rise time of 210 minutes or less, specified in JIS D 0204
+80 based on high and low temperature test methods for automotive parts
Cooling by repeated heating and cooling between ℃ and -40 ℃
Tensile shear strength after 10 cycles of heat cycle test
Degree (τa) is 0.8 × τo, 20 or more with respect to the tensile shear strength.
A hanging structure of a glass plate, which is an adhesive . 2. A holding device comprising a pair of opposed holding plates.
The protruding projections 4 and the protruding projections 5 are respectively formed at opposing positions on the upper surfaces of the holding plates 2 and 3, and the suspension shafts 6 inserted through the through holes in the upper central portions of the holding plates 2 and 3 are connected to the suspension means 7. The lower end of each of the holding plates 2 and 3 is provided with convex portions 9 and 10 protruding inward, and the lower end of both holding plates 2 and 3 is provided with fitting grooves 11 and 12. It is characterized in that the glass plate is pressed by being engaged with the holding brackets 13 and 14 and by tightening the tightening bolts and nuts 15 and 16 inserted through the lower holes of the holding plates 2 and 3. The suspension structure of a glass plate according to claim 1, wherein