JP5027570B2 - Panel body structure in building switchgear - Google Patents

Description

  The present invention belongs to the technical field of a panel body structure in a building opening / closing device provided in an opening of a factory or a warehouse.

  In general, in a building opening / closing device, a door body in which a plurality of panel bodies having a predetermined plate thickness are connected in the opening / closing direction is configured to travel freely on a guide rail having a straight portion and a curved portion. In this case, the door body is connected to each other by a swing support shaft provided on one side in the plate thickness direction between panel bodies adjacent in the opening and closing direction, and is bent with respect to each other when traveling (moving) the guide rail curved portion ( It is configured to have a linear posture that is linear with each other when traveling on the straight portion of the guide rail. The door body configured as described above requires a configuration that does not cause a positional shift in the thickness direction when the adjacent panel bodies are in a linear posture, and the adjacent panel bodies are in a swinging posture. When changing from a straight position to a straight posture, the distance between the plate thickness surfaces on the other side in the plate thickness direction (opposite side of the swinging support shaft arrangement portion) is changed from a separated state to a close facing (contact) state. Therefore, there is a possibility that a finger may be caught in the part, and a configuration for preventing this is necessary.

As one of the configurations to solve such a requirement, a swing support shaft is provided on one side in the plate thickness direction of the adjacent panel body, and the plate thickness of the plate thickness surface of one panel body among the adjacent plate thickness surfaces. An engaging protrusion having a chevron surface projecting toward the other panel body is formed at the intermediate portion in the direction, while the engaging protrusion is engaged with the intermediate portion in the thickness direction of the plate thickness surface of the other panel body. The engagement concave portion is formed, and the other chevron surface in the plate thickness direction of the engagement concave portion is configured to swing along the projection surface of the engagement protrusion, thereby preventing displacement in the plate thickness direction. In addition, as a configuration that forms a gap between the end edge portion of the engaging recess on the other side in the plate thickness direction and the protruding base end edge portion of the engaging protrusion, the panel bodies are guide rail curved portions. In a bending posture that moves, the engaging protrusion is exposed to the outside and the finger enters the back side of the plate thickness surface. In a linear posture in which the panel bodies are in a straight line shape, the finger clamp is not caused by the gap between the end edge portion of the engaging recess and the protruding base end edge portion of the engaging protrusion. Has been advocated.
Patent Publication No. 2868253

  On the other hand, in such an opening / closing device, a heat insulating function may be imparted to the door body so as to insulate the inside and outside of the door body. In this case, airtightness between adjacent panel bodies is strongly required. By the way, in the case where the engaging recess and the engaging protrusion are engaged with each other with the swing support shaft as a fulcrum as in the conventional one, in order to make the swing operation smooth and reliable, A predetermined gap is required between the engagement protrusion and the engagement recess in the plate thickness direction, and the gap is a mountain shape on both sides in the plate thickness direction of the engagement protrusion and the engagement recess in a linear posture between the panel bodies. It is formed between the faces. Such a gap not only causes a backlash of the door body, but also reduces the heat insulation performance inside and outside the space closed by the door body. Although a sealing member is provided on the other chevron surface in the thickness direction, the sealing member only seals the gap on the other side in the plate thickness direction. It is difficult to exert a sufficient effect against the above, and even if a heat insulating material is interposed in the panel body having such a configuration, since the heat insulating property at the connecting portion is inferior, the structure as it is is insulated. It cannot be employed as a door device, and here is a problem to be solved by the present invention.

The present invention has been created in view of the above-mentioned circumstances and has been created for the purpose of solving these problems, and the invention of claim 1 connects a plurality of panel bodies having a predetermined plate thickness in the opening and closing direction. In the architectural opening / closing device in which the door body travels freely on a guide rail having a straight part and a curved part, adjacent panel bodies are provided with a swing support shaft provided on one side in the plate thickness direction at the adjacent part. Are connected to each other so that the panel body can be swung freely between a bending posture in which the panel bodies are bent and a linear posture in which the panel bodies are linear. In forming the engaging protrusion and the engaging recess each having an engaging chevron surface, the chevron surface on the other side in the plate thickness direction of the engaging protrusion has elasticity, and the engaging protrusion and the engaging recess are engaged with each other. Clearance on one side and clearance on the other side formed in the thickness direction between the mating recesses Provided thicker airtight sheet than the sum of the Aransu, a linear posture of the panel body, the engaging recess presses the airtight sheet, by pressing the engaging projection in the thickness direction one side, the both side It is the panel body structure in the switchgear for buildings comprised so that clearance might be sealed .
According to a second aspect of the present invention, the chevron surface on the other side in the plate thickness direction of the engaging protrusion is formed by an arc surface centering on the swing support shaft, and the top side portion of the arc surface is an arc. 2. The panel body structure in a building switchgear according to claim 1, wherein the panel is formed on a biased surface that is biased toward the swinging spindle side from the surface, and the airtight sheet is provided from the arc surface to the biased surface.
According to a third aspect of the present invention, the engagement between the engagement protrusion and the engagement concave portion is configured to reach the swinging spindle opposing portion at least in the plate thickness direction. It is a panel body structure in the switchgear.

By making it the invention of Claim 1, in the linear attitude | position of each panel body, the airtightness in a plate | board thickness direction is improved and it becomes a highly heat-insulating door body, and it can reduce rattling.
By setting it as invention of Claim 2, peeling of an airtight sheet | seat can be prevented and durability can be improved.
By making it the invention of Claim 3, the operation | movement which presses the engagement protrusion by an engagement recessed part to the plate | board thickness direction one side becomes reliable.

Next, embodiments of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes an overhead type architectural opening / closing device, and a door body (opening / closing body) 2 constituting the architectural opening / closing device 1 is a plurality of horizontally elongated panel bodies as will be described later. 3 is connected in a swingable (flexible) manner in the opening / closing direction of the door body 2, and guide rollers 3 a are provided on the left and right sides of each panel body 3. A pair of left and right guide rails 4 is provided in the housing opening, and each guide rail 4 is a straight vertical rail 4a erected on the side of the opening (corresponding to the straight portion of the present invention). ), A linear horizontal rail 4b (corresponding to the linear portion of the present invention) provided on the ceiling portion on the back side of the opening, and a curved R-shaped rail 4c (which connects the rails 4a and 4b) Corresponding to the curved portion of the present invention). Each rail 4a, 4b, 4c of the guide rail 4 is formed with a continuous guide groove 4d, and the guide roller 3a of each panel body 3 is movably fitted in the guide groove 4d. It is configured.

  Reference numeral 5 denotes a rotating shaft that is rotatably supported above the opening. A pair of wire drums 5 a are fitted and fixed to both left and right ends of the rotating shaft 5 so as to rotate integrally with the rotating shaft 5. The free ends of the wires 5b wound around these wire drums 5a are connected to the lowermost panel body 3b located at the lowermost end among the panel bodies 3 constituting the door body 2. When the wire drum 5a rotates as the rotating shaft 5 rotates forward and backward, the wire 5b is unwound and unwound from the wire drum 5a, whereby the door body 2 is guided to the guide rail 4. And is configured to move between a fully closed posture that closes the opening and is positioned on the vertical rail 4a, and a fully open posture that opens the opening and is positioned on the horizontal rail 4b. In the process of opening and closing movement, when the door body 2 moves on the R-shaped rail 4c of the guide rail 4, the adjacent panel bodies 3 swing with an appropriate swing angle and bend to each other. In the case of moving the vertical rail 4a and the horizontal rail 4b, the adjacent panel bodies 3 are configured to be in a linear posture in which they are connected in a straight line.

  On the other hand, the rotary shaft 5 is rotatably supported by a plurality of support brackets 6 fixed to a housing above the opening, and a pair of left and right balance bombs 7 are provided between the rotary shaft 5 and the support bracket 6. It is intervened. These balance ammunition machines 7 are set so that an accumulating force is applied when the rotating shaft 5 rotates in a direction to close the door body 2, and the accumulating force is used to open and close the door body 2. In the process, it is set to balance the load of the door body 2 acting on the wire 5b. The door body 2 is configured such that the rotating shaft 5 rotates forward and backward in accordance with a manual opening / closing operation. In the closing operation, the door body 2 is closed based on the weight of the door body 2 and is lightly closed. In the opening operation, a simple opening operation is performed by the stored power of the balance ammunition 7 stored in the closing operation of the door body 2.

And the door body 2 of this Embodiment is comprised by what was provided with the heat insulation function, and the heat insulation structure by which this invention was implemented is implemented by each panel body 3. FIG.
Here, in describing the configuration of each panel body 3, the panel body 3 changes its posture according to the guide state of each part of the vertical rail 4 a, the horizontal rail 4 b, and the R-shaped rail 4 c of the guide rail 4. A description will be given based on the posture of the panel body 3 shown in FIG.
The panel body 3 includes a pair of face plates 8 and 9 (a pair of plate thickness directions) made of a metal plate material, and the upper and lower edges of the face plates 8 and 9 have low thermal conductivity. A pair of upper and lower upper and lower end surface members 10 and 11 made of a resin material are connected to each other. And the heat insulating material 12 comprised by the highly heat-insulating resin material is interposed (filled) in the site | part enclosed by each of these face plates 8, 9, and the upper and lower end surface members 10 and 11, Thus, the high thermal insulation of each panel body 3 is ensured.

The upper end edge of the surface plate 8 is formed with a retraction piece 8a that bends in an inclined manner toward the back plate 9 side and upward, and is folded toward the back plate 9 side at the tip of the retraction piece 8a. An upper bent piece 8b that is bent is formed, and the upper bent piece 8b is configured to be provided in a portion that is biased toward the back plate side of the panel body 3. Further, a lower bent piece 8 c that is bent toward the back plate 9 is formed at the lower edge of the front plate 8.
On the other hand, upper and lower end edges of the back plate 9 are formed with lower bent pieces 9a and 9b as well as bent toward the front plate 8 side.

And it is a mutually opposing surface of the adjacent panel body 3, and constitutes the plate thickness surface of the present invention, and among the lower end surface members 10, 11, the upper end surface member 10 is located at both ends in the front and back direction, Groove-shaped face plate fixing portions 10a and 10b that open toward the outside in the plate thickness direction (each face plate 8 and 9 side) are formed, and the surface plate upper bent pieces are formed on these face plate fixing portions 10a and 10b. 8b and back plate upper bent piece 9a are configured to be fitted and locked. Further, the upper end face member 10 is formed with an engaging protrusion 10c having a chevron surface located between the face plate fixing portions 10a and 10b and projecting upward to face the plate thickness direction of the panel body 3. Has been.
The lower end surface member 11 is located at both ends in the front and back direction, and is formed with groove-shaped face plate fixing portions 11a and 11b that open toward the outside in the plate thickness direction (each face plate 8 and 9 side). The front plate lower bent piece 8c and the rear plate lower bent piece 9b are fitted and locked to the face plate fixing portions 11a and 11b, respectively. Further, the lower end surface member 11 is located between the face plate fixing portions 11a and 11b, and has an engagement concave portion 11c having a mountain-shaped surface facing the plate thickness direction of the panel body 3 by being recessed upward. However, as will be described later, the engaging recess 11c is configured to fit the engaging protrusion 10c formed on the upper end surface member 10 in a loose fit.

  Each panel body 3 configured in this way makes a pair of panel bodies 3 adjacent in the vertical direction and is connected by hinges 13 at a plurality of locations in the left-right direction. These hinges 13 are connected to a pair of upper and lower mounting pieces 13a. And a pivot pin 13b serving as a pivot shaft. Then, by fixing the pair of attachment pieces 13 a of each hinge 13 to the back plate 9 of the upper and lower panel bodies 3, the adjacent panel bodies 3 are arranged on the panel body 3 on one side in the plate thickness direction. It is set so that it may be connected in the state where the pivot pin 13b is located in the adjacent part (between). As a result, the adjacent panel bodies 3 are swung around the pivot pin 13b as a rocking fulcrum, and in the bent posture, the upper end surfaces of the panel bodies 3 positioned on the lower side are spaced apart from each other between the surface plates 8. The engagement protrusion 10c of the member 10 is exposed to the outside, and in a straight posture, the engagement protrusion 10c is fitted into the engagement recess 11c and engaged in the thickness direction, thereby preventing displacement. It is comprised so that it may become.

  Here, in the linear posture between the adjacent panel bodies 3, the face plate fixing portion 11 b of the lower end face member 11 on the back plate 9 side and the face plate fixing portion 10 b of the upper end face member 10 are in a positional relationship in parallel in the vertical direction. The half of the pivot pin 13b of the hinge 13 is set so as to loosely fit into the gap formed between them. Further, the face plate fixing portion 11a of the lower end face member 11 on the surface plate 8 side and the face plate fixing portion 10a of the upper end face member 10 are plate thicknesses with the lower end face member face plate fixing portion 11a positioned on the face plate 8 side. The inclined piece 8a of the surface plate 8 faces the lower end face member face plate fixing portion 11a, and the gap portion is set to a predetermined length in the vertical direction between them. H is set to prevent finger pinching. Further, these face plate fixing portions 11a and 10a are formed so as to be located below the position where the pivot pin 13b is disposed, whereby the surface plate of the engagement protrusion 10c and the engagement recess 11c. The engagement on the 8th side is set so as to be positioned below the position where the pivot pin 13b is disposed with respect to the thickness direction.

  Further, in the engaging protrusion 10c of the upper end surface member 10, the protrusion rear surface side chevron 10d on the pivot pin 13b side (side facing the rear surface plate 9) which is one side in the plate thickness direction has a predetermined inclination angle. It is formed in a straight line. The angled surface on the surface side of the protrusion on the surface plate 8 side that is the other in the plate thickness direction of the engaging protrusion 10c has a predetermined outer diameter R1 centered on the pivot pin 13b at the protruding proximal end portion. The small-diameter arc surface 10e is formed on the top-side portion (projecting tip-side portion) of the small-diameter arc surface 10e, and the pivot pin 13b side (inner-diameter side) is deviated from the locus along the small-diameter arc surface 10e. It is formed on the offset surface 10f. Furthermore, a protrusion 10g that protrudes to the outer diameter side to reach the locus of the small-diameter circular arc surface 10e is formed on the top portion that is the tip side of the offset surface 10f, and the protruding end of the protrusion 10g is It has a shape that is integrated with the protrusion rear surface side chevron 10d on the pivot pin 13b side. Further, a dovetail mounting recess 10h that opens outward (on the surface plate 8 side) is formed at the base end side portion of the circular arc surface 10e, and the mounting recess 10h includes a tongue piece 14a. It is comprised so that the base end part of the sealing body 14 may be fitted in the shape of retaining.

  Further, in the engaging recess 11c of the lower end face member 11, the back plate 9 side, which is one side in the plate thickness direction, is a linear recess back side chevron having an inclination angle similar to that of the protruding back side chevron surface 10d. It is formed on the surface 11d. On the other hand, an inner diameter R2 (R2> R1) having a larger diameter than the outer diameter R1 of the small-diameter circular arc surface 10e with the pivot pin 13b as the center is formed on the surface plate 8 side which is the other in the plate thickness direction of the engaging recess 11c. The large-diameter circular arc surface 11e is formed. Further, a step-shaped recess 11f into which the tongue piece 14a of the sealing body 14 is fitted is formed in the base end side portion of the large-diameter arc surface 11e. Here, in the face plate fixing portion 11a constituting the lower side piece of the stepped recess 11f, the distance from the pivot pin 13b of the inner side surface 11g on the back plate 9 side is larger than the diameter R2 on the large-diameter circular arc surface 11e. Is set to have a slightly larger diameter.

  The panel bodies 3 swing between the large-diameter arc surface 11e along the small-diameter arc surface 10e. As described above, the outer diameter R1 of the small-diameter arc surface 10e is the large-diameter arc surface. The clearance (gap) is set to be smaller than the inner diameter R2 of 11e, and the clearance is also set to be formed between the protrusion rear surface side chevron surface 10d and the recess rear surface side chevron surface 11d. As a result, the swinging operation is configured smoothly and reliably. Here, in the linear posture between the panel bodies 3, the clearance in the plate thickness direction between the engagement protrusion 10c and the engagement recess 11c is the first clearance between the small-diameter arc surface 10e and the large-diameter arc surface 11e. One clearance C1 and a second clearance C2 between the protrusion back surface side chevron surface 10d and the recess back surface side chevron surface 11d are set. The second clearance C2 is set smaller than the first clearance C1 (C1> C2). Incidentally, the clearance between the offset surface 10f and the large-diameter arc surface 11e is larger than the first clearance C1.

  Then, an airtight sheet 15, which is a sheet-like airtight material that can be elastically deformed, is attached to the engaging protrusion 10 c from the small-diameter circular arc surface 10 e to the offset surface 10 f by an integrated means such as sticking in the left-right direction. However, the upper edge portion of the airtight sheet 15 is disposed so as to abut against the base end portion of the protrusion 10g serving as the top (upper end) of the engagement protrusion 10c. The sheet thickness S of the airtight sheet 15 is thicker than the sum of the first and second clearances C1 and C2, which are clearances in the plate thickness direction between the engagement protrusion 10c and the engagement recess 11c (S>). (C1 + C2)). As a result, when the panel bodies 3 are transformed into a linear posture, the airtight sheet 15 is pressed in a resilient manner by the large-diameter arc surface 11e, and the surface plate 8 between the engagement protrusion 10c and the engagement recess 11c. The first clearance C1 on the side is sealed, and the small-diameter arc surface 10e (engagement protrusion 10c) that receives the elastic force of the large-diameter arc surface 11e is based on the play of the hinge 13, and the pivot pin 13b Is pushed (displaced) to the back plate 9 side (one side in the plate thickness direction) as a fulcrum, and the second clearance C2 between the protruding back side chevron surface 10d on the back plate 9 side and the concave back side chevron surface 11d. Is set to be sealed.

In addition, one leg piece 16a of an L-shaped attachment piece 16 is fixed to the left and right edges of the casing that constitute both the left and right sides of the opening, and the other leg piece 16b of the attachment piece 16 is fixed to the other leg piece 16b. While the guide rail 4 is fixed, each panel body 3 has a guide roller 3a supported on the back plate 9 side. By fitting the guide roller 3a into the guide groove 4d of the guide rail 4, In each panel body 3, the left and right end portions on the surface plate 8 side are close to and opposed to the left and right edge portions of the housing, respectively, and the surface plate 8 side is close to and opposed to the upper edge portion (lintel portion) constituting the upper portion of the opening. It is configured as follows.
On the other hand, a tongue-shaped first sealing member 17 made of a rubber-like elastic material that seals between the left and right ends of each panel body 3 and a cylindrical second member are provided on the left and right edges of the casing. The sealing member 18 is provided over the entire length in the vertical direction in a state where the sealing member 18 is juxtaposed in the left and right directions. The thing similar to 18 is provided over the left-right direction full length in the state parallel to the up-down direction.

On the other hand, at both left and right ends of each panel body 3, a metal eaves member 3 d is provided in a state of connecting the front and back plates 8, 9 so as to cover the heat insulating material 12 and attach the guide roller 3 a. Resin-made end members 19 are provided long in the vertical direction in a state of being interposed between the flange members 3d at the left and right ends, and are configured to insulate the front and back plates 8 and 9 from each other. . As shown in FIG. 6, the end member 19 is provided in a state facing the second sealing member 18 at the left and right side edges of the housing, and the left and right ends of the gap H formed in the surface plate 8. It is configured so as to obtain an effect of closing the part and improving the sealing performance. Further, as shown in FIG. 7, a resin upper end member 20 is provided over the entire length in the left-right direction on the upper edge portion of the uppermost end panel body 3c positioned at the highest position in the fully closed posture of the door body 2 ( 7), the heat insulating effect of the door body 2 can be further enhanced, and the surface plate 8 side can be surely sealed.
Further, a resin-made cushioning material 21 is provided in each of the gaps H of each panel body 3 closed by the end member 19 to improve heat insulation performance and to seal on the surface plate 8 side. It is configured to be more reliable. With these configurations, the sealing performance between the door body 2 and the housing opening is enhanced, and the heat insulating function of the door body 2 can be effectively exhibited.

Next, the sealing performance in the swinging operation between the panel bodies 3 will be described.
In the linear posture between the panel bodies 3, as shown in FIG. 4, the tip end portion of the tongue piece 14a of the sealing body 14 interferes with the stepped recess 11f of the engaging recess 11c, and the large-diameter arc surface 11e becomes the airtight sheet. In this state, the large-diameter arc surface 11e of the engaging recess 11c is elastically pressed against the airtight sheet 15, and the large-diameter arc surface 11e and the small-diameter arc surface are in contact with each other. 10e is sealed, and the large-diameter arc surface 11e pushes the small-diameter arc surface 10e of the engaging projection 10c toward the back plate 9, so that the projection back-side chevron surface 10d becomes the recess back-side chevron surface. 11d side is brought into close contact with each other, sealing inside and outside of the space partitioned by the door body 2 is ensured, and high insulation performance can be exhibited, and the engagement protrusion 10c and the engagement recess 11c are in close contact with each other. It becomes a state and does not rattle Is constructed sea urchin.

In this case, when changing from a straight posture to a bent posture, the outer peripheral surface of the airtight sheet 15 provided on the small-diameter arc surface 10e is changed in a state where the inner peripheral surface of the large-diameter arc surface 11e slides ( (See FIGS. 5C and 5B). At this time, the inner side surface 11g of the engaging recess 11c set to a slightly larger diameter than the large-diameter circular arc surface 11e is dimensioned so as not to interfere with the outer peripheral surface of the airtight sheet 15, and the inner side surface 11g is rocked. The lower end edge of the airtight sheet 15 is not rubbed in the process of dynamic change, and the lower end edge of the airtight sheet 15 is prevented from being peeled off. Then, the sliding contact between the inner peripheral surface of the large-diameter arc surface 11e and the outer peripheral surface of the airtight sheet 15 reaches a position opposite to the offset surface 10f set to an inclined surface having a smaller diameter than the small-diameter arc surface 10e. The large-diameter circular arc surface 11e is configured not to interfere with the upper edge portion of the airtight sheet 15.
In the present embodiment, the panel bodies 3 are configured to have a maximum bending angle in a bending posture in a state in which the inner side surface 11g reaches the portion facing the offset surface 10f (see FIG. 5A). Yes. Here, the maximum bending angle between the panel bodies 3 is determined by the curvature of the R-shaped rail 4c and the vertical length of each panel body 3, but in the present embodiment, as shown in FIG. In addition, the inner side surface 11g of the engaging recess 11c is set to have an angle that does not exceed the protrusion 10g of the engaging protrusion 10c, whereby the engagement protrusion 10c and the engaging recess 11c It is configured so that it is possible to reliably prevent a finger from entering.

  On the other hand, in the case of changing from the bending posture to the linear posture, the large-diameter arc surface 11e of the engaging recess 11c is separated from the airtight sheet 15 as the pivot pin 13b swings. From this state, the outer surface of the hermetic sheet 15 is brought into contact, and from this state, the inner peripheral surface of the large-diameter circular arc surface 11e swings while sliding on the outer peripheral surface of the hermetic sheet 15, thereby swinging and deforming. Therefore, it is set so that the finger can be prevented from entering the back side between the panel bodies 3. As the linear posture approaches, the proximal end portion of the large-diameter circular arc surface 11e approaches the front and back direction facing portion with respect to the pivot pin 13b, and the elastic force against the airtight sheet 15 becomes a force that directs the horizontal direction as it is. The operation of pushing the portion 10c toward the back plate 9 is ensured. And in this thing, while the upper end edge of the airtight sheet | seat 15 is affixed on the offset surface 10f, the range which the inner peripheral surface of the large diameter circular arc surface 11e slides on the airtight sheet 15 is from the offset surface 10f. Since the large-diameter arc surface 11e does not interfere with the upper end edge of the airtight sheet 15, the upper end edge of the airtight sheet 15 can be prevented from peeling off. It is configured.

  In the present embodiment configured as described, the door body 2 in which a plurality of panel bodies 3 are swingably connected is guided by the guide rail 4 having the R-shaped rail 4c so that the opening is opened and closed. In the overhead type architectural opening / closing device 1 configured to be connected, the connection between the panel bodies 3 is performed by the engagement protrusions 10c formed on the upper and lower end surface members 10 and 11 and the engagement recesses 11c. As a result, play in the thickness direction can be prevented and fingers can be prevented from being pinched between the panel bodies 3. In this case, the heat insulating material 12 is interposed in each panel body 3. At the same time, by providing the airtight sheet 15 and the sealing body 14 between the engagement protrusion 10c and the engagement recess 11c, the switchgear 1 having a heat insulating function is provided. In this case, the airtight sheet 15 on the surface plate 8 side between the engagement protrusion 10c and the engagement recess 11c is pressed in a pressure-like manner by the large-diameter arc surface 11e of the engagement recess 11c. Since the surface 11e presses the small-diameter arc surface 10e of the engaging protrusion 10c via the airtight sheet 15, the protrusion rear surface side chevron surface 10d is displaced toward the concave portion rear surface side chevron surface 11d, and therefore the airtight sheet 15 is interposed. By doing so, not only the first clearance C1 on the front plate 8 side but also the second clearance C2 on the back plate 9 side between the engaging protrusion 10c and the engaging recess 11c can be sealed. Thereby, in the linear posture of each panel body 3, the airtightness in the plate | board thickness direction of the door body 2 is improved, and it can be set as the highly heat-insulating door body 2, and also reduces the rattle of the door body 2. be able to.

  In addition, in this case, the airtight sheet 15 provided on the engaging protrusion 10c is pressed elastically by the large-diameter arc surface 11e of the engaging recess 11c, so that the engaging protrusion 10c is pushed by the second clearance C2. Since the structure is displaced in the thickness direction, the large-diameter arc surface 11e is in strong sliding contact with the air-tight sheet 15, but the air-tight sheet 15 extends over the offset surface 10f that has a smaller diameter than the small-diameter arc surface 10e. Provided, the upper edge of the airtight sheet 15 is not slid into the engaging recess 11c, and the airtight sheet 15 is prevented from peeling off from the engaging protrusion 10c, and the durability of the airtight sheet 15 is improved. It can improve and can be set as the door body 2 with high reliability.

  Further, in this configuration, in the linear posture of each panel body 3, the lower end edge of the large-diameter arc surface 11e is located below the swing fulcrum position by the pivot pin 13b, and the air-tightness by the lower end portion of the large-diameter arc surface 11e. The elastic force with respect to the sheet 15 acts toward the back plate 9 side, and the operation of pressing the engaging protrusion 10c toward the back plate 9 side can be further ensured.

  In addition, in this, the airtight sheet 15 has elasticity, and the sheet thickness S is set to be thicker than the gap formed between the engaging protrusion 10c and the engaging recess 11c. Thus, it is ensured that the gap is closed in the straight posture, and the heat insulating effect and the rattling prevention effect of the door body 2 can be exhibited more remarkably.

It is the rear view which notched a part of building switchgear. It is the side view which notched a part of building switchgear. 3A and 3B are a rear view of the panel body and an XX cross-sectional view in FIG. It is a principal part enlarged front view explaining the linear attitude | position of panel bodies. FIGS. 5A, 5 </ b> B, and 5 </ b> C are enlarged side views of main parts for explaining the bending postures of the panel bodies. It is a partial top view of the switchgear for buildings. It is a partial side view in the upper part of the switchgear for buildings.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Architectural switchgear 2 Door body 3 Panel body 4 Guide rail 5 Rotating shaft 7 Balance ammunition 8 Surface plate 9 Back surface plate 10 Upper end surface member 10e Small-diameter circular surface 10f Offset surface 11 Lower end surface member 11e Large-diameter circular surface 12 Heat insulation material 13 Hinge 15 Airtight sheet 17 First sealing member

Claims (3)

In a building opening / closing apparatus in which a door body in which a plurality of panel bodies having a predetermined plate thickness are connected in the opening / closing direction travels freely on a guide rail provided with a straight portion and a curved portion, adjacent panel bodies, The adjacent panel body is connected to the adjacent part via a swing support shaft provided on one side in the plate thickness direction so that the panel body can freely swing and change between a bending posture in which the panel bodies are bent and a straight linear posture. When forming an engagement protrusion and an engagement recess each having a chevron surface that engages in the thickness direction in the straight line posture, the thickness of the engagement protrusion on the other side in the thickness direction An airtight sheet is provided on the chevron surface that has elasticity and is thicker than the sum of the clearance on one side and the clearance on the other side formed in the plate thickness direction between the engagement protrusion and the engagement recess. In the straight posture of the body, the engagement recess presses the airtight sheet, and the engagement protrusion is the plate By pressing the one side direction, the panel structure in the structure with architectural opening-closing device to seal the clearance of the both side.   The chevron surface on the other side in the plate thickness direction of the engaging protrusion is formed by an arc surface centered on the swing support shaft, and the top side of the arc surface is on the swing support shaft side from the arc surface. The panel body structure in the switchgear for a building according to claim 1, wherein the airtight sheet is formed from the arc surface to the offset surface.   The panel body structure in the switchgear for a building according to claim 1 or 2, wherein the engagement between the engagement protrusion and the engagement recess is configured to reach the swinging shaft opposing portion at least in the plate thickness direction.

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