JP6426483B2 - Side - Google Patents

Description

  The present invention relates to a blindly connected to a curtain wall, for example.

  Conventionally, a curtain wall structure is often employed on the wall surface of a middle to high-rise building or the like. In the curtain wall structure, vertically extending vertical plates are disposed at predetermined intervals in the horizontal direction, and blindness is disposed at predetermined intervals in the horizontal direction and connected to the vertical. And various panels, such as a glass panel and a wall surface, are mounted on a rectangular frame divided by a pair of adjacent bridges and blindness.

  What was described in patent document 1 as an example of a building of such a curtain wall structure is proposed. In this curtain wall, a plurality of frame units each consisting of upper and lower horizontal members and left and right vertical members are arrayed in the vertical and horizontal directions, and panels such as glass are sandwiched between the frame units. The right and left members, which are the longitudinal members of the adjacent frame units, are fixed to each other by screws via the hollow portions, thereby forming a side stand.

JP 2005-2574 A

  However, in the curtain wall described above, when the blindness of the cross member expands and contracts in the left and right direction under the influence of air temperature and heat inside and outside the room, the right and left members that make up the square are firmly screwed. Therefore, there is a drawback that the blind expansion and contraction due to heat can not be absorbed, and the blindness is deformed in the depth direction (the direction of prospect). Furthermore, there is also a possibility that panels such as glass held by the frame unit may be damaged due to blind deformation.

  The present invention has been made in view of such problems, and it is possible to suppress the awning deformation and an adverse effect on other members even if the blindness is expanded and contracted by the influence of heat. The purpose is to provide standing.

According to the present invention, there is provided a structure in which a fixed member fixed to a housing and a movable member vertically connected and held movably in the longitudinal direction of the transparent are opposed to each other. The fixed member is provided with a fixed joint sleeve having a receiver, and the movable member is provided with a movable joint sleeve having an abutting portion capable of abutting on the receiver, and the fixed member is provided with the fixed member. When the member and the movable member are separated, the receiving portion and the contact portion can be in contact with each other.
Further, according to the present invention, the fixing member fixed to the housing and the movable member connected blindly and held movably in the longitudinal direction of the blind face each other. The fixed support member is provided with a fixed support portion having a first guide stopper, and the movable support member is provided with a movable support portion having a second guide stopper capable of abutting on the first guide stopper. The first guide stopper and the second guide stopper can be brought into contact with each other when the fixing method standing member and the movable way standing member approach each other.
According to the present invention, when the blind connected to the movable member extends or contracts under the influence of heat such as air temperature, the movable member can move in a direction toward or away from the fixed member. Therefore, even if the blindness is expanded and contracted by heat, it can be absorbed by the movement of the movable member without deformation.

According to the present invention, there is provided a structure in which a fixed member fixed to a housing and a movable member vertically connected and held movably in the longitudinal direction of the transparent are opposed to each other. The fixing member is connected to the housing by the fixing member, and the supporting member connected to the movable member is disposed between the fixing member and the fixing member, and the depth of the movable member is determined. It is characterized in that the movement of the direction is restricted.
By mounting the support member connected to the movable member between the fixture and the fixed member, the movable member is prevented from moving in the depth direction, that is, the indoor / outdoor direction.

In addition, the fixing tool has a fixing bracket for connecting the fixing member and the housing, and a fastening bolt, the support member has a notch inserted into the shaft of the fastening bolt, and the inside diameter of the notch is outside the shaft Preferably, the diameter is set larger.
The movable member is supported from the fastening bolt to the housing via the support member, and when the movable member is moved in a blind longitudinal direction, the support member has a large diameter cutout relative to the axis of the fastener. Because it is formed, it moves integrally with the movable member.

Further, the outdoor side end of the fixing member may be formed in a substantially T-shaped cross section, and the movable member may be disposed on the indoor side of the T-shaped distal end surface.
Since the outdoor side end of the fixing member is formed to have a substantially T-shaped cross section, even if the movable member moves, it can be hidden so as not to be exposed to the outside by the end face of the fixing member, and the appearance looks good Is good.

  According to the present invention, the movable member can move relative to the fixed member in response to the expansion and contraction of the fixed member even if the blind member expands and contracts due to the influence of heat. It is possible to prevent the blindness from being deformed by heat stress or damaging other members such as a panel.

It is a principal part front view which shows the state which attached the curtain wall by embodiment of this invention to the outer wall of a building. It is an AA line longitudinal cross-sectional view containing the building of the curtain wall shown in FIG. FIG. 3 is a cross-sectional view taken along the line B-B of the vertical portion shown in FIG. FIG. 4 is an enlarged explanatory view showing a fixed member and a movable member which constitute the vertical in FIG. 3; It is a CC line longitudinal cross-sectional view which shows the engagement structure of the fixing method standing member and the movable way standing member shown in FIG. A supporting angle is shown, (a) is a top view, (b) is a front view, (c) is a side view. (A), (b) is a figure which shows the assembly process of the frame unit of a curtain wall. It is a figure which shows the assembly process of the frame unit with respect to the fixed method standing member of a curtain wall. It is a figure which shows the assembly process which installed the movable member of the frame unit in the fixed member.

Hereinafter, a method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9.
The curtain wall 1 forming the outer wall according to the embodiment shown in FIG. 1 is disposed in the longitudinal direction and is arranged in the lateral direction orthogonal to the laterality 2 with a plurality of lateralities 2 arranged at predetermined intervals in the lateral direction. A plurality of blinds 3 are disposed and arranged at predetermined intervals in the vertical direction. The curtain wall 1 is, for example, one in which frame units 1A and the like having a shape as shown in FIG. 7 are sequentially assembled.
In the example of the curtain wall 1 shown in FIG. 1, an indoor floor surface is installed, for example, as 2 FL (2 floor floor surface) and 3 FL (3 floor floor surface) between two blind eyes 3 adjacent in the vertical direction. There is.

  In FIG. 2, the structure which connects the square 2 in the part which shows the appropriate floor of FIG. 1, for example, 3FL, and the upper and lower eyes 3, 3, is shown as an AA line longitudinal cross-sectional view. For example, a frame 5 as a beam material showing a floor surface of 3 FL from the ceiling on the second floor is disposed horizontally along the outer wall of the curtain wall 1 and a cross section fixed to the frame 5 on the indoor side of the bridge 2 A substantially L-shaped fixing bracket 6 is fixed.

  That is, the horizontal portion 6a of the fixing bracket 6 is fixed to the housing 5 by the fastening bolt 7A, and the rising portion 6b is fixed to the back surface 2a on the indoor side of the bridge 2 by the fastening bolt 7B. Although the internal configuration of the side 2 is omitted in FIG. 2, the upper side 3 of the side 2 is connected to the upper side of the fixing bracket 6, and the lower side 3 is connected also to the lower side. Then, for example, a glass panel 9 is fitted as a panel of glass, wall surface, or the like in the rectangular frame-like frame body 8 partitioned by each pair of the horizontal plates 2 and the blind 3. An L-shaped metal fitting embedded in the housing 5 is disposed on the lower surface of the horizontal portion 6a of the fixing bracket 6, and is fixed to the horizontal portion 6a with a bolt.

Next, FIG. 3 is a cross-sectional view taken along the line B-B showing the structure 2 shown in FIG. 2 and the fixing structure to the housing 5 and the specific structure of the structure 2 according to the present embodiment is shown from FIG. A concrete explanation will be given by 6.
In FIG. 3, the gutter 2 is composed of a fixed member 11 and a movable member 12 disposed facing each other with a gap k. The movable member 12 is movable in a predetermined range in a direction perpendicular to the longitudinal direction of the fixed member 11.

  In FIGS. 3 and 4, the fixing member 11 is a T-shaped portion 13 disposed on the outdoor side of the curtain wall 1 and a U-shaped cross section disposed on the indoor side and widened outward. The fixed stand frame portion 14 formed in the above is integrally formed. The T-shaped portion 13 is formed in a substantially T shape by a tip end surface 13 a covering the indoor side of the gutter 2 and a base portion 13 b orthogonal to the tip end surface 13 a. The fixing method erecting frame portion 14 is formed in a substantially U-shaped cross section, and the indoor side end surface 14a is formed on the indoor side so as to face the tip end surface 13a.

A central hole 14b for inserting the shaft 7b of the fastening bolt 7B is formed in the indoor side end surface 14a of the fixing method standing frame portion 14, and the fastening bolt 7B extends from the head 7a on the outdoor side to the shaft 7b as the indoor side end surface 14a. It is made to project through the central hole 14 b and the hole of the rising portion 6 b of the fixing fitting 6, and is fastened and fixed by a nut 15. Thus, the fixing member 11 of the side 2 is fixed to the housing 5 via the fixing fitting 6.
Moreover, a blind 3 is connected to the base 13 b on the tip surface 13 a side of the T-shaped portion 13 of the fixing member 11 on the opposite side to the movable member 12.

The movable member 12 is disposed at a position facing the fixed member 11 so as to be movable in the direction perpendicular to the longitudinal direction (hereinafter referred to as the P direction), that is, in the longitudinal direction of blindness 3 It is done. The movable member 12 is a movable base 17 disposed substantially in parallel with the base 13b at the inner side of the tip surface 13a of the T-shaped part 13 of the fixed member 11 and fixed on the indoor side thereof The movable frame 18 having a substantially L-shaped cross section, which is opposed to the upright frame 14 to open the gap k and is expanded outward, is integrally formed.
Further, an intermediate contact piece 14c is formed on the outdoor side end of the fixing frame 14 so as to be in contact with the movable frame 18 via a packing.

  Moreover, a hollow packing 19 is fixed in the recess to the tip end surface 13a of the T-shaped portion 13, and a tip contact piece 17a obtained by bending the tip of the movable base 17 into an L shape is in contact with the packing 19. . When the movable member 12 moves in the P direction toward or away from the fixed member 11, the packing 19 is displaced following the movable member 12.

Further, the indoor side contact piece 18a of the movable side frame portion 18 of the movable side member 12 is bent in an L shape through the packing and is in contact with the indoor side end face 14a. Therefore, the movable member 12 is not connected to the fixture 6 or the housing 5 and can move horizontally within a predetermined range. Therefore, the airtightness and liquid tightness in the gap k are achieved by the packing provided on the indoor side contact piece 18a, the packing provided on the middle contact piece 14c, and the packing 19 in contact with the leading end contact piece 17a. Sex is maintained.
Moreover, the blind 3 is connected to the end side of the movable base 17 of the movable member 12 on the opposite side (right side in FIG. 3) of the fixed member 11.

  Further, in FIG. 3, at the tip end side of the T-shaped portion 13 of the fixing method member 11, a lead-in portion 22 is formed between the tip surface 13 a and the frame portion 13 c, and the glass panel 9 is held. Further, on the outdoor side of the movable member 12, a lead-in portion 22 is formed between the tip end surface 13a of the T-shaped portion 13 and the frame portion 17b provided on the movable base 17. The panel 9 is held.

  Each of the glass panels 9 is held by the fixing member 11 and the movable member 12 of the left and right side panels 2 and the respective indents 22 of the upper and lower blind members 3. In addition, although the glass panel 9 shown in FIG. 3 is made of one sheet glass, a plurality of glass panels such as a pair of glass may be disposed, or a wall panel or the like forming an outer wall may be installed instead of the glass panel. It is also good.

Further, in the space between the fixing frame 14 of the fixing member 11 and the movable frame 18 of the movable member 12 in the bridge 2 shown in FIGS. 3 to 5, the fixing frame A fixed support plate 25 is connected to the inner surface of the portion 14 by a fastening bolt 7C, and a movable support plate 26 is connected to the inner surface of the movable stand frame portion 18 by a fastening bolt 7C. In FIG. 5, the fixed support plate 25 is formed with a fixed joint sleeve 27 having a substantially L-shaped cross section, and the movable support plate 26 is formed with a movable joint sleeve 28 having a substantially L-shaped cross section.
Moreover, the fixed joint sleeve 27 and the movable joint sleeve 28 are disposed in an engaged state in which the receiving portion 27a bent upward at the tip end side of the substantially L-shaped portion and the abutting portion 28a bent downward are engaged with each other. The fixed joint sleeve 27 supports the load of the movable member 12 to allow movement of the blind 3 in the longitudinal direction, that is, the P direction, while maintaining the engagement with the movable joint sleeve 28.

Further, guide stoppers 25a and 26a which can be brought into contact with each other are disposed on the fixed support plate 25 and the movable support plate 26 so as to face both sides of the fixed and movable joint sleeves 27 and 28, respectively. The contact between the guide stoppers 25a and 26a in the gap k can prevent the movable member 12 from approaching the fixed member 11 too much. Further, the contact portion 28 a of the movable joint sleeve 28 abuts on the receiving portion 27 a of the fixed joint sleeve 27, so that the movable member 12 can be prevented from being separated too much from the fixed member 11.
In addition, even if the fixed and movable joint sleeves 27 and 28 engaged with each other are displaced in the indoor and outdoor directions, the guide stopper 26a abuts on the intermediate abutment piece 14c, or the movable joint sleeve 28 guides the fixed support plate 25. It is blocked by coming into contact with the stopper 25a.
Thus, the movement range and the shift of the movable member 12 with respect to the fixed member 11 can be restricted.

Further, in FIG. 3, on the indoor side of the indoor side end surface 14 a and the indoor side contact piece 18 a in the square 2, a support angle 30 which is a plate material having a substantially L shape in plan view is disposed as a support member. As shown in FIGS. 6A to 6C, the support angle 30 is formed by bending a support plate 31a and a fixing plate 31b into a substantially L-shaped cross section.
As shown in FIG. 6B, the support plate 31a is formed with a substantially reverse U-shaped notch 31c from the lower side to the upper side, and this notch 31c can be inserted from above into the shaft 7b of the fastening bolt 7B. It is assumed.
Moreover, as shown in FIG. 6 (b), the inside diameter of the notch 31c which is notched in the substantially semicircular shape at the top is set larger than the outside diameter of the shaft 7b of the fastening bolt 7B. A slight gap is formed to be slidable. Further, a spacer 32 is connected by a screw or the like to the fixing bracket 6 side of the support plate 31a.

The fixed plate 31b of the support angle 30 is connected to the movable member 12 by a fastening bolt (see FIG. 3). The movable member 12 and the support angle 30 may be integrally formed in advance.
Then, when the support angle 30 attaches the movable support member 12 to the support support 2, the support plate 31a is inserted between the indoor side end surface 14a of the fixed support member 11 and the rising portion 6b of the fixing bracket 6 to cut out the notch 31c. Are inserted into the shaft 7b of the fastening bolt 7B. In addition, the movable plate member 12 is restricted from moving in the indoor / outdoor direction (depth direction) by sandwiching the support plate 31a between the indoor side end surface 14a and the rising portion 6b.

The square 2 according to the present embodiment has the above-described configuration, and next, a method of assembling the curtain wall 1 including the square 2 will be described with reference to FIGS. 7 to 9.
When assembling the curtain wall 1, frame units of various shapes formed by assembling in advance two curtains 2 and a blind 3 in advance with reference to the floor surface of each floor with respect to the curtain wall 1 assembled earlier in FIG. 1A, 1B,... Are sequentially assembled to fix the side 2 to the housing 5.

Next, a method of assembling the curtain wall 1 will be described with reference to FIGS. 8 and 9.
First, as shown in FIG. 8, in the fixing bracket 6 fixed to the housing 5 at a predetermined interval, the fixing member 11 is passed through the indoor side end surface 14a to the standing portion 6b of the left fixing bracket 6 by the fastening bolt 7B. It is fixed. Moreover, the blind 3 is connected to the T-shaped portion 13 of the left fixing member 11.
On the other hand, as the frame unit 1A, one having a configuration in which the movable member 12 and the fixed member 11 are connected by the blind 3 at the upper and lower positions is conveyed and attached.

In FIG. 8, when mounting the frame unit 1A, the frame unit 1A is lowered from above with respect to the shaft 7b of the fastening bolt 7B of the fixing member 11 shown on the left side. Then, the notch 31 c of the support angle 30 connected to the movable member 12 is fitted from above onto the shaft 7 b between the indoor end surface 14 a and the rising portion 6 b of the fixing bracket 6. As a result, as shown in FIG. 9, the movable member 12 is installed at an opposing position close to the fixed member 11 with a gap k.
At that time, as shown in FIG. 5, the movable member 12 is lowered by positioning the movable member 12 so that the movable joint sleeve 28 engages with the fixed joint sleeve 27 of the fixed member 11. Hold.

Then, the load 31 of the movable method standing member 12 and the blind 3 connected thereto is fitted with the notch 7c of the support angle 30 with the shaft 7b of the fastening bolt 7B, and the movable joint sleeve 28 having an L-shaped cross section The stationary joint sleeve 27 is supported by the stationary erecting member 11 by abutting from the upper side.
Then, the movable side erecting member 12 abuts on the indoor side end face 14a of the fixing side erecting member 11 through the packing provided on the indoor side abutting piece 18a, and the packing 19 provided on the distal end face 13a of the T-shaped portion 13 The distal end contact piece 17a of the movable member 12 abuts on the rear surface of the movable member 12. As a result, the fixed member 11 and the movable member 12 open the gap k to form a member 2 facing air tight and liquid tight.

At the same time, the fixing member 11 provided on the right with respect to the movable member 12 of the frame unit 1A shown in FIG. The indoor side end surface 14a is opposed to the rising portion 6b, and the shaft 7b of the fastening bolt 7B is fastened by the nut 15 through the central hole 14b of the indoor side end surface 14a and the hole of the rising portion 6b.
By sequentially repeating such an operation, the frame unit 1A and the like are sequentially connected to assemble the curtain wall 1 as an outer wall.
Thereafter, the glass panel 9 is attached to the frame body 8 partitioned by the pair of bridges 2 and the blind 3 via the infeed portion 22. The load of the glass panel 9 is also held by the fixing member 11 via the movable and fixed joint sleeves 28 and 27 together with the load of the movable member 12 and the blind 3.

Next, the operation of the curtain 2 of the curtain wall 1 according to the present embodiment will be described.
In the method 2 according to the present embodiment, when the curtain wall 1 is exposed to high temperature and the eyes 3 thermally expand, one of the eyes 3 is a fixing member fixed to the housing 5 via the fixing bracket 6 The other is connected to the movable member 12 and extends by thermal expansion.
Then, the movable member 12 of each of the members 2 moves a small amount toward the fixed member 11 and the movable joint sleeve 28 moves on the fixed joint sleeve 27 in the direction of overlapping each other. At that time, the movable joint sleeve 28 is guided by the guide stopper 26a coming into contact with the intermediate abutment piece 14c and the indoor end face 14a or with the guide stopper 25a of the fixed joint sleeve 27 and overlapping each other without shifting. Move relatively in the direction to enlarge.

  Further, since the support angle 30 provided on the movable member 12 has the notch 31c having an inner diameter larger than the outer diameter of the shaft 7b of the fastening bolt 7B, the dimensional difference between the outer diameter of the shaft 7b and the inner diameter of the notch 31c The movable member 12 is integrally movable in the P direction orthogonal to the axis 7b of the fastening bolt 7B according to the movement of the movable member 12 in the range of.

  Accordingly, the indoor contact piece 18a located on the indoor side of the movable member 12 slides along the indoor end surface 14a of the fixed member 11 through the packing, and simultaneously with the tip contact. The piece 17 a also moves toward the base 13 b of the T-shaped portion 13 while deforming the packing 19 inside the tip end surface 13 a of the T-shaped portion 13. As described above, since the movable member 12 moves in parallel in the direction P adjacent to the fixed member 11 due to the thermal expansion of the blind member 3, the deformation of the blind 3 can be suppressed.

In addition, when the movable member 12 moves relative to the fixed member 11, the support angle 30 is also moved integrally, but the support plate 31a covers almost the entire indoor front of the lever 2 Even if the support angle 30 moves by a small amount, the movement of the movable member 12 with respect to the fixed member 11 is not exposed to the indoor side.
The movement of the movable member 12 is blocked by the guide stopper 26a of the movable joint sleeve 28 coming into contact with the guide stopper 25a of the fixed joint sleeve 27.

  Further, even when the curtain wall 1 is exposed to cold air and the blindness 3 is thermally shrunk, the movable direction member 12 moves parallel to the fixing direction member 11 in the P direction in which it is separated. Also in this case, the movable joint sleeve 28 is guided by the guide stopper 25 a with respect to the fixed joint sleeve 27 and moves in the direction away from each other. Then, when the fixed joint sleeve 27 and the receiving portion 27a of the movable joint sleeve 28 abut on the abutting portion 28a, the further movement of the movable member 12 is blocked.

As described above, in the curtain wall 1 according to the present embodiment, the movable member 12 of the curtain 2 moves in the longitudinal direction of the blind 3 when the blind 3 is expanded or contracted by thermal stress. By so doing, the thermal stress of blindness 3 can be absorbed, and deformation of blindness 3 due to heat and damage to the glass panel 9 etc. can be prevented.
Further, since the movable angle member 12 inserts the support angle 30 between the indoor end surface 14a of the fixed angle member 11 and the rising portion 6b of the fixing bracket 6, the notch 31c is inserted into the shaft 7b of the fastening bolt 7B. The movable member 12 can be prevented from moving indoors and out.

In addition, even if the movable member 12 moves in the P direction due to thermal stress in the bridge 2, the movable member moves on the inside of the tip surface 13a of the T-shaped portion 13 of the fixed member 11 on the outdoor side. The movement of the standing member 12 is not exposed to the outside. Therefore, the appearance is good and the design is improved.
In addition, since the wind pressure from the indoor side is received by the indoor side end surface 14 a of the fixing way standing member 11, the movable way standing member 12 is not affected by the wind pressure.

  The present invention 2 is not limited to the above-described embodiment, and appropriate changes, substitutions, and the like can be made without departing from the scope of the present invention. Hereinafter, although the modification of the present invention is explained, the same numerals are used to the same or similar members, parts, etc. as an embodiment mentioned above, and explanation is omitted.

  For example, in the above-described embodiment of the present invention, although the gutter 2 provided on the curtain wall 1 has been described, the present invention is not limited to the curtain wall 1, and a fixture in which gutter 2 and blindness 3 are connected In this case, the present invention can be applied to walls 2 such as outer walls other than curtain walls, such as fixed (FIX) windows, smoke exhaust windows, and other windows provided with blindness 3 installed in appropriate fittings.

  In the embodiment described above, the support angle 30 is connected to the movable member 12 in advance and assembled to the fixed member 11, but instead, the movable member 12 is fixed to the fixed member 11 The support angle 30 may be inserted into the shaft 7b of the fastening bolt 7B and then the support angle 30 may be connected to the movable member 12 or not.

Alternatively, the support angle 30 may not be provided on the movable member 12, and the flat support plate 31a may be fixed to the fixed member 11 to hide the movement of the movable member 12. Alternatively, the support plate 31a may be supported by fitting the independent support plate 31a into the shaft 7b of the fastening bolt 7B with the notch 31c. In these cases, the appearance from the indoor side is good.
In addition, the support angle 30 which made the movable direction member 12 invisible from the indoor side by the support plate 31a may not necessarily be installed. Even in this case, the movable side erecting member 12 can be held so as not to move in the indoor / outdoor direction by the indoor side contact piece 18 a and the movable base 17 abutting on the fixed side erecting member 11.

Reference Signs List 1 curtain wall 2 side stand 3 blind 5 frame 6 fixing bracket 7A, 7B, 7C fastening bolt 9 glass panel 11 fixing side member 12 movable side member 13 T-shaped portion 13a tip surface 14a indoor side end face 27 fixed joint sleeve 28 Movable joint sleeve 30 Support angle 31a Support plate 31c Notch

Claims (5)

A fixed member fixed to the housing,
A movable member which is blindly connected and movably held in the longitudinal direction;
Provided oppositely ,
The fixed member is provided with a fixed joint sleeve having a receiving portion,
The movable joint member is provided with a movable joint sleeve having an abutting portion capable of abutting on the receiving portion,
When the fixed method member and the movable method member are separated, the receiving portion and the contact portion can be in contact with each other . A fixed member fixed to the housing,
A movable member which is blindly connected and movably held in the longitudinal direction;
Provided oppositely,
The fixed support member is provided with a fixed support having a first guide stopper,
The movable support member is provided with a movable support portion having a second guide stopper that can be in contact with the first guide stopper.
The first guide stopper and the second guide stopper can be brought into contact with each other when the fixed member and the movable member approach each other . A fixed member fixed to the housing,
A movable member which is blindly connected and movably held in the longitudinal direction;
Provided oppositely,
The fixing member is connected to the housing by a fixing device,
Supporting member connected to the movable side elevational member, and wherein disposed between the fixed side elevational member and the fixture was configured to restrict the movement in the depth direction of the movable side elevational member How to do it. The fixture is a fixture and a fastening bolt for connecting the fixing member and the casing, and the support member has a notch which is inserted into the shaft of the fastening bolt, and the inside diameter of the notch is the same as that of the shaft The method according to claim 3 , wherein the diameter is set larger than the outer diameter. The outdoor-side end of the fixed side elevational member is formed into a substantially T-shaped cross section, one of claims 1 in which the movable side elevational member is disposed fourth indoor side of the T-shaped distal surface One of those listed in Section 1

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