JP2008190174A - Glass sheet support structure and support method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass sheet support structure which eliminates limitation of a sheet thickness of a glass sheet due to a countersink, can support the weight of a laminated glass sheet and the load in an out-of-plane direction with good balance by an outside glass sheet and an inside glass sheet, and is low in hole boring cost, component member cost, and construction cost. <P>SOLUTION: The glass sheet support structure is composed of the laminated glass sheet, a grip member (2), a support member (3), and a pressing member (4). The laminated glass sheet consists of the outside glass sheet (1a) and the inside glass sheet (1b) which are formed with straight holes (A and B) such that their hole center axes almost match with each other, and that the first hole (A) of the outside glass sheet is larger in diameter than the second hole (B) of the inside glass sheet. The grip member (2) made of a resin material is inscribed with the first hole, and grips front and rear surfaces of the inside glass sheet on the periphery of the second hole in a manner being spaced away from a hole end face. The support member (3) is partly fitted into the inside (C) of the grip member and mounted on a skeleton. The pressing member (4) is fitted into the support member, for pressing the grip member in an outside glass sheet direction of the hole center axis. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to support of plate glass, and more particularly to a support structure and support method for plate glass using holes in laminated glass.

  In recent years, there are increasing examples of constructing a flat outer wall having a high transparency by supporting a large number of plate glasses with a casing without using a sash called a DPG (Dot Point Glazing) construction method. In particular, in order to ensure safety and crime prevention, laminated glass is often used as a glass sheet used in the DPG construction method.

  This DPG construction method, for example, as represented by Tenpoint (Asahi Glass Co., Ltd .: trade name) disclosed in Patent Document 1, is prepared on a plate glass that has been countersunk with a loture (special hinge), which is a plate glass support component. By setting the bolt part), the surface of the plate glass can be finished flat (flat surface), and it is widely accepted because of its design and the advantage that dust does not collect on the outdoor surface of the plate glass.

  On the other hand, from the viewpoint of countersink processing, it is necessary to ensure that the plate thickness is not less than a certain thickness so that the countersunk part is not missing, and also from the viewpoint of strength design, it is necessary to ensure that the plate thickness is not insufficient against the external force assumed. There is. Countersink processing is a countersink with a pan depth of 5 mm, but the thickness of the plate glass (thickness specified by JIS, also called “nominal thickness”, the unit is expressed as “mm”. For example, JIS R3202 (1996 version) is exemplified for float sheet glass, and JIS R3206 (2003 version) is exemplified for tempered sheet glass. In this specification, the same shall apply hereinafter. The experiment results that there is a problem from the viewpoint of. For this reason, as for the plate thickness of the plate glass, the minimum plate thickness is 10 mm due to the presence of the countersink, even if the strength is not required to be 10 mm when there is no countersink. In addition, there is a problem that the processing cost of the countersink increases because the shape accuracy and the strength around the hole are important and high quality processing is required. In addition, it is necessary to process the loture into a shape corresponding to the countersunk hole, and the buffer member inserted between the plate glass and the rotuule also needs to be processed with high accuracy corresponding to the countersunk shape, which increases the cost of the member. It becomes.

  Examples of using laminated glass for the DPG construction method include, for example, Patent Document 2 and Patent Document 3. In the case of a laminated sheet glass supported by a window frame instead of the DPG construction method, it has a yield strength close to the total sheet thickness of the two sheet glasses against the wind pressure. However, when laminated glass is used for the DPG construction method, the plate thickness on one side that has been countersunk cannot be reduced to 10 mm or less due to the limitation of the plate thickness due to countersink processing, as described above, and the design wind pressure is low. If it is small, an excessive plate thickness configuration is uneconomical and problematic.

  On the other hand, Patent Document 4 proposes a method that does not use countersink processing even when laminated glass is used for the DPG construction method. In Patent Document 4, both the outer plate glass and the inner plate glass constituting the laminated plate glass are opened with a straight hole instead of a countersink so as to match the centers of both straight holes, and only the inner plate glass is tightened with a tightening member and a nut. A method of supporting the entire laminated glass sheet by sandwiching is disclosed.

Japanese Patent Laid-Open No. 5-179739 JP-A-5-214781 JP-A-6-322867 JP 2000-129846 A

  However, since Patent Document 4 positions the support member with respect to the laminated plate glass with reference to the straight hole of the inner plate glass, both are provided between the straight hole of the outer plate glass and the support member (the flange portion of the fastening member). The positional deviation caused by the machining accuracy of the holes occurs, and it is necessary to fill the gap with the sealing material. Moreover, unintentional eccentricity between the straight hole of the outer plate glass and the support member (the flange portion of the tightening member) can be easily seen from the outside, which is not preferable in appearance.

  Moreover, since patent document 4 is a structure which supports both the weight of a laminated sheet glass, and the load of the out-of-plane direction of sheet glass only by inner plate glass, the plate | board thickness of inner plate glass must be more than predetermined, outer plate glass and inner plate glass There is a problem that the plate thickness becomes unbalanced.

  Furthermore, Patent Document 4 requires a hinge bolt (special hinge bolt) having a tilting mechanism in order to reduce the generated stress around the circular hole when wind pressure is applied.

  The present invention has been made in view of the above, and in a laminated glass supporting structure having holes, it eliminates the restriction of the plate glass thickness due to the countersunk holes without impairing the design of the flat surface and the appearance around the circular holes. A flat glass support structure that can support the weight of the laminated glass and the load in the out-of-plane direction in a balanced manner between the outer glass sheet and the inner glass sheet, eliminates the need for a hinge bolt with a tilt mechanism, and further reduces countersink machining costs and member costs And its supporting method.

  In order to achieve the above-mentioned object, the present invention mainly supports a laminated glass sheet, characterized in that the glass sheet is supported on the housing by using a gripping member made of a resin material fitted in a straight hole of the laminated glass sheet, and The following invention relates to a support method suitable for this structure.

  (1) In the plate glass support structure for supporting the laminated plate glass on the casing, the plate has a straight hole in which the hole center axes of both the outer plate glass and the inner plate glass substantially match, and the hole diameter of the first hole of the outer plate glass is the inner diameter. The laminated plate glass having a diameter larger than the hole diameter of the second hole of the plate glass, and the inner plate glass front and back surfaces in contact with the first hole and around the second hole are spaced from the hole end surface. A gripping member made of a resin material to be gripped, a support member that is partially fitted inside the gripping member and attached to the housing, and a gripping member that fits into the support member and that is And a pressing member that presses in the direction of the outer glass sheet.

  (2) In the plate glass support method for the plate glass support structure according to (1), a step of fitting a gripping member made of a resin material into a hole in a laminated plate glass, a step of fitting a support member to the gripping member, A method of supporting a glass sheet, comprising: pressing the gripping material in the direction of the outer glass sheet of the central axis of the hole by the pressing member; and fixing the support member and the housing.

  According to the laminated glass support structure of the present invention, the weight of the laminated glass and the load in the out-of-plane direction can be supported in a balanced manner by the outer glass and the inner glass. A plate glass can be suitably used.

  In addition, since the clearance for absorbing manufacturing errors is not required in the straight hole of the outer glass sheet, an elastic sealing material required in the prior art is unnecessary, and the outer plate glass and the supporting member are excellent in appearance without eccentricity. A flat flat glass wall surface can be realized.

  Further, since the counter hole is not required and the number of members is reduced, the construction cost can be suppressed due to the necessity of the member cost including the hole machining cost and the above-described elastic sealing material.

  Furthermore, since the resin glass gripping member can allow minute translation and rotation of the laminated glass plate, the stress generated around the circular hole can be reduced, and it can be supported without using a tiltable hinge bolt.

  Hereinafter, embodiments of a support structure according to the present invention will be described with reference to the drawings (FIGS. 1 to 6).

  FIG. 2 is a perspective view showing an example in which the laminated glass supporting structure according to the embodiment is applied to a handrail made of flat glass. A plate glass handrail 10 shown in the figure is provided along a concourse passage 12 of a subway, and includes a bar-shaped handrail main body 14 and a plurality of handrail main bodies 14 disposed along the passage. It is comprised from the pillars 16, 16 ..., and the laminated glass 1 arrange | positioned along these pillars 16, 16 .... The laminated plate glass 1 is a laminated plate glass described below, and this laminated plate glass 1 is supported by the pillar 16 (casing) through the support structure of the embodiment.

  In FIG. 1, sectional drawing of embodiment of the plate glass support structure of the laminated glass which has a straight hole in the laminated glass 1 is shown. The laminated plate glass 1 is composed of an outer plate glass 1a and an inner plate glass 1b. In the case of construction as an outer wall of a building, the outer side glass 1a is the outdoor side glass, and the inner side glass shows the indoor side. A relatively large diameter straight hole A is formed at a desired position in the outer glass sheet 1a. The inner plate glass 1b is formed with a straight hole B which is coaxial with the straight hole A of the outer plate glass 1a and has a smaller diameter. The gripping member 2 made of a resin material that fits into the straight holes A and B is located between the laminated plate glass 1 and the support member, mainly supports its own weight through the hole end surface of the outer plate glass 1a, and holds the periphery of the hole of the inner plate glass 1b. By doing so, it is provided for the purpose of supporting the out-of-plane load and maintaining watertightness and airtightness.

The gripping member 2 is straight between the outer portion 2a having the same diameter as the straight hole A and substantially the same thickness as the outer glass sheet 1a, the inner portion 2c having a larger diameter than the straight hole B, and the outer portion 2a and the inner portion 2c. The center portion 2b is smaller in diameter than the hole B and has a thickness substantially equal to that of the inner glass sheet 1b. Since the outer portion 2a has the same diameter as the straight hole A, this portion is inscribed in the straight hole A, and in contact with the surface of the inner plate glass 1b around the straight hole B because it is larger in diameter than the straight hole B. Since the inner portion 2c has a larger diameter than the straight hole B, the inner portion 2c comes into contact with the back surface of the inner glass sheet 1b around the straight hole B. Therefore, the front and back surfaces of the inner glass sheet 1b can be gripped by the outer portion 2a and the inner portion 2c of the grip member 2. Further, since the central portion 2b has a smaller diameter than the straight hole B, the space D can be formed by separating the end surface of the inner glass sheet 1b in the straight hole B and the central portion 2b.
Thus, as described above, the weight is mainly supported through the hole end surface of the outer glass sheet 1a, and the out-of-plane load is supported by gripping the periphery of the hole of the inner glass sheet 1b. This is to reduce the burden of burden by sharing each of the support portions. In addition, the straight holes A and B of the laminated glass 1 are slightly misaligned in the center of the hole due to the respective errors during the drilling and when the laminated glass is combined. Can absorb the deviation.

  The gripping member 2 is preferably configured integrally with the outer part 2a, the inner part 2c, and the central part 2b, but is not limited thereto (see FIG. 5). Moreover, it is preferable that the material of these parts consists of the same resin material. For example, the central portion 2b of the gripping member 2 shown in FIG. 5 may be made of a resin material different from that of the outer portion 2a and the inner portion 2c.

  Further, in order to fix the gripping member 2 to the support member 3, a pressing member 4 is also provided that presses the gripping member 2 in the direction of the outer glass sheet of the hole center axis. The support member 3 is for fixing the gripping member 2 against the load in the direction of its own weight and in the out-of-plane direction, and further fixing the support member 3 itself to the housing.

The straight hole A is preferably provided at least in the corner when it is intended to withstand high wind pressure as a load in the out-of-plane direction. The gripping member 2 preferably has an open space C formed coaxially with the straight hole A in order to fit the support member 3 inside. Further, as described above, the support member 3 preferably includes a head portion 3a, a bolt portion 3b, and an end portion 3c in order to fix the gripping member 2 against the load in the own weight direction and the out-of-plane direction. The head 3a is fitted to the gripping member 2 so that the gripping member 2 does not come out of the force applied to the laminated plate glass toward the outer side plate glass 1a, and to effectively grip the inner side plate glass 1b by the gripping member 2. The diameter of the portion 3a is preferably larger than that of the straight hole B. The bolt portion 3b is preferably tightened with a nut as the pressing member 4 so that the laminated glass plate does not come off against the force on the inner plate glass side applied to the laminated plate glass.
In fixing the support member 3 to the housing, the support member 3 may be attached to a cable fixed to the housing in the same manner as in the conventional DPG construction method, or may be directly fixed to a housing (structure) such as a column or a beam. Good. Examples of the fixing method include a method using bolts and nuts, a method using welding, and the like as known techniques.

Next, each configuration will be described in more detail. Each glass constituting the laminated plate glass is made of single plate glass such as netted plate glass, float plate glass, and tempered plate glass. Each of the outer plate glass 1a and the inner plate glass 1b may be a laminated plate glass or a multi-layer plate glass made of a combination of the above single plate glasses.
1 and 3-6 of FIG. 3 is resin. The resin 1c represents a film-like one or a liquid resin injected between two sheet glasses. The film-like resin is called an intermediate film, and polyvinyl butyral (PVB) is preferable from the viewpoint of film strength. As for what hardened | cured liquid resin, the urethane acrylate, epoxy acrylate, polyester acrylate etc. which have thermosetting or photocurability are preferable. When safety and crime prevention are intended, an intermediate film type with high film strength is more preferable.

The gripping member 2 is made of a resin material, and is preferably made of a flexible resin material such as rubber or elastomer. The hardness is preferably 60 to 95 degrees according to the A-type spring hardness test of JIS K6301 (1995 edition). If the hardness is less than 60 degrees, there is a high possibility that the elasticity to support the plate glass is insufficient, and if it exceeds 95 degrees, the watertightness and airtightness may be insufficient. Further, depending on the structure of the gripping member 2, it is necessary to pass the inner part 2c larger than the diameter of the straight hole B through the straight hole B. If the resin material of the inner part 2c is too hard, this may be difficult.
The resin material of the holding member 2 needs to be a material having high weather resistance and durability, and therefore high durability such as silicone rubber and ethylene propylene rubber (these may be called silicone elastomer and ethylene propylene elastomer). Of these, rubbers and elastomers are preferred. Moreover, the holding member 2 may be comprised from 2 or more types of different resin materials, for example, the center part 2b may be comprised from the resin material different from another part. The holding member 2 is preferably made of an integrally molded product made of silicone rubber or ethylene propylene rubber having a hardness within the above range.

  The support member 3 is preferably made of a metal material such as aluminum or stainless steel. The shape of the head 3a of the support member may be a columnar shape as shown in FIG. 1 or may have a reverse taper as shown in FIG. If it does not come out with respect to the force to the outer side glass 1a side, it does not need to be the illustrated cross-sectional shape.

  The pressing member 4 is preferably made of a metal material such as aluminum or stainless steel, like the support member. The pressing member 4 may be of a simple nut shape, and a taper upper 5 (pressing member) as a part of the pressing member 4 is provided between the gripping member 2 and the nut as the pressing member 4 as shown in FIG. May be. Thereby, since the outer periphery of the edge part by the side of the inner side plate glass 1b of the holding member 2 can be made small, it becomes easy to fit from the outer side plate glass 1a side. Since the taperper 5 only needs to be able to press the gripping member 2, it may be a metal material such as aluminum or stainless steel like the support member 3, or may be a resin material like the gripping member 2.

  The laminated glass supporting structure shown in FIG. 5 is obtained by dividing the gripping member into three parts (2a, 2b, 2c) partitioned by a plane perpendicular to the central axis of the hole as described above. Thereby, the shape of each part can be simplified and the member cost can be further reduced. The number of divisions need not be three, but may be two or three or more.

  The laminated glass support structure shown in FIG. 6 is a case where a bolt portion 3b having a tilting mechanism is employed as the support member 3 according to the embodiment of the present invention. In the present invention, the hinge bolt having the tilting mechanism is not an essential element. However, when this is added, although the effect related to the member cost is not used and the member cost is reduced, the other effects are not impaired, and the generation around the hole of the laminated glass is particularly difficult. The stress can be further reduced as compared with the generated stress when the tilting mechanism is not used. This bolt part 3b comprises the head part 3a and the screw part 3c of the bolt part 3b as separate parts, and the spherical part of the screw part is inserted into the spherical recess formed inside the head part 3a via the buffer ring 6. It can comprise by fitting so that tilting is possible.

  Next, a method for forming the plate glass support structure of the embodiment will be described. First, the holding member 2 is fitted into the hole of the laminated plate glass 1 from the outer plate glass 1a side or the inner glass 1b side. Since the holding member 2 is made of a resin material, it can be fitted relatively easily according to the hardness of the resin. Next, the support member 3 is fitted to the holding member 2 from the outer side glass 1a side or the inner side glass 1b side. Next, the holding member 2 is pressed by the pressing member 4 in the direction of the outer plate glass of the central axis of the hole and fixed to the support member 3. In this fixing, it is preferable to fasten the gripping member 2 by screwing the nut 4 as the pressing member 4 to the bolt portion 3 b of the support member 3. Finally, the housing and the support member 3 are fixed. In fixing to the housing, a known method can be applied as described above.

  In the step of fitting the gripping member 2 into the hole of the laminated glass, a slit may be cut in one radial section of the gripping member 2 to facilitate insertion. Even in this case, since it is made of resin, the cut portions are also brought into close contact with each other after fitting, and watertightness and airtightness are maintained. Further, in the step of fitting the support member 3 to the gripping member 2, the head 3 a of the support member and the support member bolt part 3 b can be divided, and the head of the support member is fitted after the support bolt part 3 b is fitted to the gripping member 2. The part 3a can also be fixed.

  In addition, the order of the above-mentioned process is changeable, for example, you may attach the laminated glass plate 1 after fitting the holding member 2 to the supporting member 3 previously. The gripping member 2 may be formed of a pre-cured resin directly on the surface of the support member 3 by using a mold, in addition to fitting a previously molded one. In this case, the fitting of the gripping member 2 to the support member 3 ends when the resin before curing is cured.

  Below, the effect of the plate glass support structure which concerns on this invention is demonstrated. As described above, since the load applied to the laminated plate glass 1 is shared and supported by the outer plate glass 1a and the inner plate glass 1b, there is no unbalance in the plate thickness compared to the conventional structure in which everything is borne by the inner side plate glass. The stress generated in each plate glass can be reduced. Moreover, since the holding member 2 has flexibility, it has airtightness and watertightness, and it is not necessary to apply a sealing material or use an airtight material, which is necessary for the conventional DPG construction method. For this reason, not only is it superior in terms of member cost and workability, but it is also possible to prevent contamination of the plate glass wall caused by the silicone sealing material. In addition, depending on the material of the sealing material, a chemical reaction may occur with the interlayer film 1c of the laminated glass, and the phenomenon that the intermediate film 1c turns yellow may occur. Absent.

  Further, since the gripping member 2 can be translated and rotated minutely when receiving an external force while supporting the plate glass flexibly, the stress concentration in the straight holes A and B can be reduced while maintaining airtightness and watertightness. . This also makes it possible to cope with a larger plate glass size, and does not require a hinge bolt having a conventional tilt mechanism.

  In addition, when the intermediate film is left on the intermediate film side surface around the straight hole B of the inner plate glass 1b and the holding member 2 is attached when the laminated plate glass is manufactured, Since the gripping member 2 is sandwiched between the end portions of the intermediate film even when the plate glass is broken, the retaining performance can be improved by sandwiching the gripping member 2 through the cushioning material.

It is a figure which shows the cross section of the support structure of one Embodiment. It is a perspective view of the laminated glass support structure of this invention applied to the handrail. It is a figure which shows the cross section of another support structure of embodiment. It is a figure which shows the cross section of another support structure of embodiment. It is a figure which shows the cross section of another support structure of embodiment. It is a figure which shows the cross section of another support structure of embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Laminated plate glass, 1a ... Outer plate glass, 1b ... Inner plate glass, 1c ... Resin, 2 ... Holding member, 2a ... Outer part of holding member, 2b ... Middle part of holding member, 2c ... Inner part of holding member, 3 ... Support member, 3a ... Head of support member, 3b ... Bolt portion of support member, 3c ... End of support member, 4 ... Press member (nut), 5 ... Taper upper as part of press member, 6 ... Buffer Ring, 10 ... handrail made of plate glass, 12 ... passage of subway concourse, 14 ... rod-shaped handrail main body, 16 ... pillar for arranging handrail main body 14 along the passage, A ... straight hole in outer plate glass, B: Straight hole in inner plate glass, C: Inner space of gripping member, D: Space between straight hole in inner plate glass and gripping member.

Claims (11)

In the plate glass support structure that supports the laminated plate glass to the housing,
The outer plate glass and the inner plate glass have a straight hole in which the hole central axes substantially coincide with each other, and the hole diameter of the first plate hole of the outer plate glass is larger than the hole diameter of the second plate hole of the inner plate glass. Laminated glass,
A gripping member made of a resin material that is inscribed in the first hole and that grips the inner plate glass front and back surfaces around the second hole spaced from the hole end surface;
A support member that is partially fitted inside the gripping member and attached to the housing;
A pressing member that fits into the support member and presses the gripping member in the direction of the outer glass sheet of the hole center axis;
A flat glass supporting structure comprising:   The support member includes a head part of which is fitted inside the gripping member, and a bolt part extending from the head part toward the inner plate glass of the central axis of the first hole, and The plate glass support structure according to claim 1, wherein the pressing member includes a nut screwed to the bolt portion.   The gripping member is inscribed in the first hole and grips the front and back surfaces of the inner plate glass around the second hole so as to be spaced from the hole end surface, and is coaxial with the first hole. The support member is made of a resin material having an open space on the inner side, and the support member has a head that fits into the open space of the gripping member, and the inner plate glass direction from the head to the central axis of the first hole. The bolt portion having a diameter smaller than that of the head portion that partially extends into the gripping member, and the pressing member includes a nut that is screwed to the bolt portion. Flat glass support structure.   The plate glass support structure according to any one of claims 1 to 3, wherein the resin material is at least one selected from silicone rubber and ethylene propylene rubber.   The plate glass support structure according to any one of claims 1 to 4, wherein the laminated plate glass sandwiches an intermediate film between the outer plate glass and the inner plate glass. In the plate glass support method with respect to the plate glass support structure of Claim 1,
A step of fitting a gripping member made of a resin material into the hole of the laminated glass;
Fitting a support member to the gripping member;
Pressing the gripping material in the direction of the outer glass sheet of the central axis of the hole by the pressing member;
Fixing the support member and the housing;
A plate glass supporting method comprising:   The plate glass supporting method according to claim 6, wherein the resin material is at least one selected from silicone rubber and ethylene propylene rubber.   The said laminated plate glass is a plate glass support method of Claim 6 or 7 which clamps an intermediate film between the said outer side plate glass and the said inner side plate glass. In the plate glass support method with respect to the plate glass support structure of Claim 2 or 3,
Fitting a gripping member made of resin into a hole in the laminated glass;
Fitting a support member to the gripping member;
A process of tightening the gripping member by screwing a nut onto the bolt portion of the support member;
Fixing the support member and the housing;
A plate glass supporting method comprising:   The plate glass supporting method according to claim 9, wherein the resin material is at least one selected from silicone rubber and ethylene propylene rubber.   The said laminated plate glass is a plate glass support method of Claim 9 or 10 which clamps an intermediate film between the said outer side plate glass and the said inner side plate glass.

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