JP2007239221A - Opening/closing device for construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overhead door which is formed of an opening/closing body obtained by vertically connecting a plurality of panel bodies together, wherein the opening/closing body is smoothly operable in spite of employment of pulling springs for opening/closing operation. <P>SOLUTION: According to the structure of the overhead door, the door body 1 obtained by vertically connecting the panel bodies 2 together, has both side portions thereof movably guided by L-shaped guide rails 5 extending from a skeleton opening section to a ceiling, and a pair of balance springs 12 maintaining a balance with the self weight of the opening/closing device, have one ends thereof connected to the respective side portions of the door body 1. Then fixed sprockets 17 interposed between side portions of the door body 1 and the one ends of the respective balance springs 12, are fixed to both edges of a rotating shaft 19 in one body with the same, and rotated together with the rotating shaft 19, to thereby synchronize the sprockets with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to the technical field of a building switchgear provided in an opening of a building such as a warehouse or a garage.

  In general, in this type of building opening and closing device, an opening and closing body formed by connecting a plurality of panel bodies that are long in the left and right direction in the up and down direction is movable from an opening portion of the housing to an L-shaped guide rail provided along the ceiling portion. There is a so-called overhead type opening and closing device configured to be guided. In such a thing, in order to make the opening and closing body opening operation light, the opening and closing body is connected to a balance ammunition balanced by the weight of the opening and closing body, and the biasing force is applied based on the opening and closing body closing operation. In some cases, the biasing force is stored and the opening / closing body is actuated to receive the biasing force. Conventionally, such a configuration is a torsional bullet as a balance spring on a fixed support shaft integrally fixed above the opening of the housing. The machine is externally fitted, and one end of the torsion ammunition is fixed to the fixed support shaft, while the other end of the torsion ammunition is connected to a take-up wheel rotatably provided on the fixed support shaft. A configuration has been proposed in which a free end of a rope wound around a take-up wheel is connected to a lowermost end portion of an opening / closing body. However, in this case, there is a problem that the height of the opening is lowered by the provision of the fixed support shaft above the opening, and the change in the biasing force of the torsional machine against the change in the weight of the opening / closing body is balanced. An operation region that is not performed may occur, and in this case, there is a problem that the smoothness of the opening / closing operation is impaired.

As an improvement measure, a balance ammunition for an overhead type opening / closing device has been proposed which uses a tension ammunition in which the change in urging force is linear.
Japanese Utility Model Publication No. 64-50594

  However, in the above-mentioned conventional one, one end of the pair of tension ammunition is individually connected to the left and right sides of the opening / closing body, and the other end of each tension ammunition is fixed to the housing. For this reason, in order to smoothly open and close the opening and closing body, the urging forces of the left and right pulling ammunition must be made uniform, and there is a problem that adjustment of the pulling ammunition is difficult. Furthermore, when opening / closing the opening / closing body, if the opening / closing operation force acts on the central portion in the left-right direction of the opening / closing body, the urging force of the tension ammunition acts on the left and right of the opening / closing body in the same way. Thus, there is no such thing as a so-called shoulder-down state in which one of the left and right sides of the opening / closing body opens and closes in advance, but when the operating force is applied to one side in the left-right direction of the opening / closing body, the shoulder-down state occurs. There are also problems that the present invention should solve.

The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is an open / close body formed by connecting a plurality of panel bodies in the vertical direction. Both side parts are movably guided from the chassis opening to an L-shaped guide rail along the ceiling, and one end of a pair of tension ammunition balanced on the weight of the opening / closing body on each side of the opening / closing body In a construction opening / closing device that is connected and receives an urging force of the tension ammunition to open / close the opening / closing body, a pair of formed between the both sides of the opening / closing body and one end of the pair of tension ammunition The power transmission path is a building opening / closing device provided with synchronization means for synchronizing the power transmission states of each other.
According to the second aspect of the present invention, a pair of power transmission paths are extended to one indoor side of a chain connected to a pair of tension ammunition machines, and these extended parts are arranged on both sides of the indoor side. The construction according to claim 1, wherein the pair of sprockets are wound around a pair of sprockets that are transported at a predetermined speed, are drawn out to the outside and reach both sides of the opening / closing body, and the pair of sprockets are synchronized by a synchronization means. Opening and closing device.
The invention according to claim 3 is the architectural opening / closing device according to claim 1 or 2, wherein the synchronizing means is constituted by a rotating shaft that rotates integrally with the pair of sprockets.
According to a fourth aspect of the present invention, each sprocket and the rotating shaft are connected to each other via an integrating means, and each integrated means has an integrated position in the circumferential direction of each sprocket and the rotating shaft. 4. The architectural opening / closing device according to claim 3, further comprising posture adjusting means for adjusting and individually adjusting the opening / closing postures of both sides of the opening / closing body.
According to a fifth aspect of the present invention, the chain connected to the tension ammunition is provided in a range where the sprocket is transferred in accordance with the opening / closing operation of the opening / closing body, and the one end of the chain and the opening / closing body are connected by a wire. It is a building switchgear according to any one of claims 2 to 4.
According to a sixth aspect of the present invention, the opening / closing body is interlocked and connected to the opening / closing device, and the driving force of the opening / closing device is linked and interlocked to one side of the opening / closing body in the left-right direction. 5. The architectural opening / closing device according to any one of 5 above.
According to a seventh aspect of the present invention, the opening / closing body is connected to the opening / closing device to open / close, and the driving force of the opening / closing device is interlocked to the opening / closing body via a rotating shaft. The switchgear for building according to one item.

According to the first aspect of the present invention, the opening / closing device can be smoothly opened and closed without causing the opening / closing body to fall down.
According to the invention of claim 2, the member can be shared and the structure can be simplified.
By setting it as invention of Claim 3, a rotating shaft does not obstruct an opening part, but can ensure large opening height.
According to the invention of claim 4, the posture adjustment of the opening / closing body can be easily performed.
By setting it as invention of Claim 5, it can comprise so that chain may not interfere with an opening-and-closing body, and can aim at protection of an opening-and-closing body.
According to the sixth aspect of the present invention, the members are not concentrated in the opening, the opening can be secured large, and the brake function by the opening / closing machine acts on any part of the opening / closing body in the left-right direction. The crime is improved.
According to the seventh aspect of the present invention, the opening / closing body can be smoothly opened and closed without causing the opening / closing body to fall down, and space can be saved.

Next, an example of an embodiment of the present invention will be described with reference to the drawings.
In the figure, 1 is a door body (opening / closing body) constituting an overhead door which is a building opening / closing device, and the door body 1 is configured by connecting a plurality of panel bodies 2 in the vertical direction, As will be described later, the door body 1 of the present embodiment is connected to a plurality of panel bodies 2 via first and second connecting members 3 and 4 at left and right end portions and left and right direction intermediate portions, respectively. Thereby, it is configured so that it can be bent between the panel bodies 2.

  On the other hand, 5 is a pair of guide rails fixed to both sides of the casing constituting the opening, and includes a vertical part 5a along the both sides of the opening, a horizontal part 5b along the ceiling, and the vertical part 5a and the horizontal part. It is integrally formed in a state of being substantially L-shaped, including a corner portion 5c positioned between 5b. The guide rails 5 are configured such that a plurality of guide rollers 6 supported on the left and right side edges of the door body 1 are respectively locked in a retaining manner. It is set to receive (guided) movement guidance, and these basic operation configurations are the same as before.

  Each panel body 2 of the door body 1 is formed with an upper folded piece portion 2a which is located at the upper edge portion and folded toward the indoor side direction lower side, and is located at the lower edge portion and located on the indoor side direction upper side. A lower folded piece 2b is formed by folding the folded piece further downward, and the upper gap US and the lower gap between each folded piece 2a, 2b and the indoor side surface of the panel body 2 are formed. A side gap DS is formed. Each of these panel bodies 2 is provided with a first connecting member 3 at the left and right ends of the indoor side surface and a second connecting member 4 at the middle in the left-right direction, so that the panel body 2 can be bent and connected freely. It is set to be made. The first and second connecting members 3 and 4 are each formed by integrally molding a resin material, and the first connecting member 3 is provided at the left and right end portions in the left and right direction. ing.

  The first connecting member 3 has a shape in which the upper and lower end portions protrude outward in the left-right direction (the first connecting member 3 is attached to the left end of the panel body 2 and the first connecting member 3 is attached to the right end). In the upper and lower edge portions, upper and lower side fitting pieces 3a and 3b that are fitted into the upper and lower side gaps US and DS of the panel body 2 are formed. Further, a connecting piece 3c is formed at the upper end portion so as to protrude indoors, and a connecting receiving piece 3d that branches into a bifurcated shape is formed at the lower end portion so as to protrude indoors and downward. The first connecting member 3 is formed with a support hole 3e that is positioned at the upper end portion and supports the shaft portion 6a of the guide roller 6 that engages with the guide rail 5 in a retaining manner, and has upper and lower ends. Locking claws 3f and 3g are formed at the outer edge in the left-right direction of the portion. These locking claws 3f and 3g are formed in a state in which they can be elastically deformed in the indoor and outdoor directions, and are incorporated so as to engage with the upper and lower locking receiving holes 2c and 2d provided in the panel body 2, The first connecting body 3 is set so as to be integrally attached to the panel body 2. At this time, the first connecting member 3 is integrated by sliding the first connecting member 3 by placing the upper and lower fitting pieces 3a and 3b on the outer sides of the upper and lower gaps US and DS of the panel body 2 in the left-right direction. The locking claws 3f and 3g are elastically deformed and automatically engaged with the locking receiving holes 2c and 2d at the time of mounting. Thus, the first connecting member 3 is set to be mounted in a state in which the first connecting member 3 is prevented from being detached from the panel body 2.

The second connecting member 4 that connects the left and right intermediate portions of the panel body 2 is not necessarily a member that needs to be mounted depending on the left and right widths of the panel body 2, but the second connecting member 4 is the panel body 2. The upper and lower side fitting pieces 4a and 4b are formed in the lower half or upper half of the upper and lower side gaps US and DS, and the connecting piece 4c protrudes indoors at the upper end. The connection receiving piece 4d which is formed in a state and branches in a bifurcated shape is formed at the lower end portion so as to protrude to the indoor side and protrude downward. The second connecting member 4 has a positioning projection 4e formed on the outdoor side surface of the portion where the pair of left and right connection receiving pieces 4d branches, and the positioning projection 4e is connected to the lower folded piece of the panel body 2. By being inserted into the through-hole 2e formed in 2b, positioning with respect to the panel body 2 and prevention of detachment (prevention of detachment) are made.
The second connecting member 4 configured in this manner has the upper and lower side fitting pieces 4a and 4b opposed to the indoor and outdoor directions at the central portion in the left and right direction of the upper and lower side gaps US and DS of the panel body 2, The upper and lower side fitting pieces 4a and 4b are configured to be elastically deformed and attached by pushing the member 4 toward the outdoor side. At the time of attachment, the positioning protrusion 4e is inserted into the through hole of the panel body 2. By being fitted in 2e, the second connecting member 4 is set to be positioned on the panel body 2 and is prevented from coming off.

Then, the first connecting members 3 mounted on the panel body 2 are inserted into the fork between the connecting piece 3c on the lower panel body 2 and the connecting receiving piece 3d on the upper panel body 2 side. The first connecting members 3 are set to be swingably connected by connecting them using the connecting pins 3h.
Further, the second connecting members 4 mounted on the panel body 2 are inserted into the fork between the connecting piece 4c on the panel body 2 side located on the lower side and the connecting receiving piece 4d on the panel body 2 side located on the upper side. By connecting these using the connecting pin 4f, the second connecting members 4 are set to be swingably connected. Thus, the panel body 2 formed in a series via the first and second connecting members 3 and 4 is configured to be swingable (bendable) between the adjacent panel bodies 2. ing.

In addition, an opening / closing device 7 is disposed at the indoor side end of one of the pair of left and right guide rails 5 (in the present embodiment, the left side in the drawing of FIG. 1) guide rail horizontal portion 5b. However, the opening / closing machine 7 is integrally fixed to the housing via the left and right inner side surfaces and the ceiling surface of the left guide rail horizontal portion 5b.
The opening / closing machine 7 has a configuration in which a screw shaft 7a that rotates forward and backward in accordance with forward / reverse rotation driving of an electric motor (not shown) extends toward the outdoor side, and the screw shaft 7a is opened and closed. The outdoor side of the machine 7 faces the outdoor side, which is the opening side, and is rotatably supported by a traveling rail 8 extending in a state adjacent to the inside of the left guide rail horizontal part 5b. The moving body 9 is screwed to the screw shaft 7a in a non-rotating manner, and the screw shaft 7a rotates forward and backward by driving the electric motor. The mobile body 9 is set so as to forcibly move in the indoor / outdoor direction on 7a. And the connection body 9a is connected with the outdoor side end of the moving body 9 which receives the driving force of the opening / closing machine 7 so that rocking | fluctuation is possible, this connection body 9a is connected with the upper end part of the door body 1, and both ends The portion is connected to the left side of the square pipe member 1 a that is guided to move by the guide rail 5. As a result, the left side portion of the door body 1 is forcibly moved in accordance with the movement of the moving body 9 in the indoor / outdoor direction accompanying the forward / reverse driving of the opening / closing machine 7, and the door body 1 is positioned at the guide rail vertical portion 5a and opened. It is set to open and close between a fully closed posture for closing the portion and a fully opened posture for opening the opening located at the guide rail horizontal portion 5b.

On the other hand, below the horizontal portion 5b of the pair of left and right guide rails 5, a case body 10 that is long indoors and outdoors is integrally provided in a state of being fixed to the lower piece 5d. Of these case bodies 10, a support plate 11 is integrally disposed at an end portion on the outdoor side of the case body 10 located on the left side, and travels on the support plate 11 from the switch 7 to the outdoor side. Outdoor ends of the rail 8 and the screw shaft 7a are supported.
The left and right case bodies 10 have substantially the same shape as the guide rail horizontal portion 5b, but are formed so that the inner sides in the left and right directions are open, and are positioned in the outdoor portion of each case body 10 in a coil shape. The balance munitions 12 corresponding to the formed tension munitions are respectively accommodated in a state of facing indoor and outdoor. An outdoor side end portion (corresponding to the other end portion of the pulling ammunition of the present invention) 12 a of each balance ammunition 12 is fixed to an outdoor side end surface 10 a (a housing side) of the case body 10, while an indoor side end A movable sprocket unit 13 to be described later is connected to the portion 12b (corresponding to one end portion of the pulling ammunition of the present invention). Each of the movable sprocket units 13 is configured such that the movable sprocket 14 is rotatably supported. These movable sprocket units 13 are installed inside the case body 10 together with the movable sprocket 14 in accordance with the expansion and contraction operation of the balance ammunition 12. It is set to move in and out.

Here, the movable sprocket unit 13 is provided with a pair of support piece portions 13b extending in a forked shape from the connecting portion 13a connected to the balance bullet machine 12 to the indoor side, and a penetrating shape is provided between the support piece portions 13b. A movable sprocket 14 is rotatably supported on a fixed shaft 13c disposed in the shaft. Further, the fixed shaft 13c penetrates the pair of support piece portions 13b, and the penetrating tip portion protrudes to the outside. The penetrating tip portion has a circle set to have an outer diameter longer than the outer diameter size of the support piece 13b. A traveling body 13d having a shape is provided. On the other hand, a traveling guide portion 10c is formed integrally with the left and right ends of the lower piece 10b of the case body 10 so that the traveling body 13d travels while being restricted in the lateral movement. When the movable sprocket unit 13 moves in conjunction with the expansion and contraction of the balance bullet machine 12, the traveling body 13d slides in the indoor / outdoor direction along the traveling guide portion 10c. The posture is configured to be able to move in a state in which the posture is stably maintained in a predetermined standing posture, and thereby configured to prevent a problem that the balance bullet machine 12 rotates inadvertently. ing.
The movable sprockets 14 have the same number of tooth bodies 14a on the outer periphery, and the movable sprockets 14 are provided with the indoor side end 12b of the balance ammunition machine 12 and the left and right sides of the door body 1. The site | part comprised by the chain 15a of the rope 15 which connects a part and comprises a power transmission path | route is wound. While the base end part 15b of each said rope 15 is each fixed to the indoor side edge part (case side) of each case body 10, the other end part (one end part of the tension | pulling ammunition of this invention) of the rope 15 The other end portion of the portion constituted by the chain 15a is set so as to be wound (engaged) with the movable sprocket 14 so as to extend to the indoor side. Is configured to function as a moving pulley with respect to the balance bullet machine 12 when a tensile force is applied to the chain 15a.

On the other hand, 16 is a fixed sprocket unit integrally provided at each of the left and right guide rail horizontal portions 5b and the indoor side end of the case body 10, and each of these fixed sprocket units 16 has the same number of teeth. Fixed sprockets 17 (corresponding to the sprockets of the present invention) having 17a are provided, respectively, so as to function as a fixed pulley. And the extension part to the indoor side of the chain 15a wound by each said movable sprocket 14 is each wound (meshing) by the fixed sprocket 17, respectively, The extension part of each chain 15a is made into a guide rail. It is set so as to be drawn to the outdoor side via an upper part in the horizontal portion 5b. Thus, the drawing end portion 15c of the cable 15 drawn out to the outdoor side is wound around the guide pulley 15d arranged above the opening, and is located at the lowermost end via the outdoor side portion of the door body 1. By being connected to the left and right ends of the lowermost panel body 2D, a power transmission path between the door body 1 and the balance ammunition 12 is formed, and the load of the door body 1 functions as a fixed pulley. Further, the balance bullet machine 12 is configured to receive the fixed sprocket 17 and the movable sprocket 14 having a function as a moving pulley. As a result, as described above, the door body 1 is subjected to the opening / closing operation force based on the driving force of the opening / closing machine 7, and the urging force of the balance ammunition 12 is applied, so that the door body 1 can be easily opened and closed. It is configured to be made.
Note that the movable sprocket 14 provided between the door body 1 and the balance ammunition 12 functions as a moving pulley, so that the expansion / contraction stroke of the balance ammunition 12 can be halved with respect to the opening / closing stroke of the door body 1. The member device is configured to be compact.

Here, the range in which the fixed sprockets 14 and 17 are wound in the course of the opening and closing operation of the door body 1 is constituted by the chain 15a, and the chain 15a is movable and fixed by the fixed sprockets 14 and 17. It is comprised so that it may mesh with the tooth bodies 14a and 17a. And the base end part 15b of the rope 15 and the part fixed to the housing indoor side site | part are comprised by the chain part (henceforth the chain part 15b). Further, the leading end portion of the rope 15 and the leading end portion 15c connected to the lowermost panel member 2D is composed of a wire portion (hereinafter, referred to as a wire portion 15c). The chain 15a is configured not to interfere with the chain 15a, so that the chain 15a rubs and damages the door body 1 and prevents the door body 1 from being damaged.
The chain 15a and the chain portion 15b are connected via a first connecting member 15e, and the first connecting member 15e is slidably movable in a guide recess 10d formed in the case body lower piece 10b. By being guided, it is set so that the posture of the chain 15a can be maintained in a predetermined standing posture. Further, the chain 15a and the wire 15c are connected via a second connecting member 15f, and the second connecting member 15f is integrally provided with a rectangular slide body 15g below, The slide body 15g is set to maintain the posture of the chain 15a in the predetermined standing posture by slidingly moving the lower piece 5d of the guide rail horizontal portion 5c.
Reference numeral 15h denotes a chain guide provided at the upper part of the indoor side end portion of the case body 10 and is set so as to prevent the chain 15a from drooping when slack occurs in the chain 15a. Reference numeral 10e denotes a cover body that closes an opening formed on the inner side in the left-right direction of the case body 10. The cover body 10e is provided so as to be detachable, and by removing the cover body 10e, It is comprised so that the maintenance of the rope 15 can be performed.

  On the other hand, the left and right fixed sprocket units 16 are each provided with a mounting box 16a having indoor and outdoor sides and left and right four side surfaces. Each is fixed integrally to the indoor side end. A rotation support shaft 16b is rotatably supported between the left and right side surfaces of each mounting box 16a, and the movement of each fixed sprocket 17 in the axial direction is restricted to each rotation support shaft 16b. In addition, it is externally fitted so as to rotate integrally with the rotation support shaft 16b. Further, each of the rotation support shafts 16b protrudes inward (in a direction close to each other) from the side surface on the inner side in the left-right direction of the mounting box 16a, and the projecting ends constitute the integration means of the present invention. The first circular plates 18 are integrally provided in a state in which relative rotation with the rotation support shaft 16b is restricted. Thus, the first disk 18 and the fixed sprocket 17 arranged in each fixed sprocket unit 16 are set so as to rotate integrally. Each of the first discs 18 is provided with two elongated holes 18a that are long in the circumferential direction on the disc surface at predetermined angular intervals.

Reference numeral 19 denotes a rotating shaft constituting the synchronizing means of the present invention, and the rotating shaft 19 is disposed between the opposing left and right fixed sprocket units 16. The second disk 20, which constitutes the integration means of the present invention and has the same outer diameter as the first disk 18, is integrally formed in a state where relative rotation with the rotation shaft 19 is restricted. Each second disk 20 is set so as to rotate integrally with the rotating shaft 19. In addition, circular bolt holes 20a are formed on the respective disk surfaces of the second disks 20 so as to face the portions where the long holes 18a of the first disk 18 are formed.
Then, the rotary shaft 19 is extended between the left and right fixed sprocket units 16 so that the first disc 18 of each fixed sprocket unit 16 and the second discs 20 at both ends of the rotary shaft 19 are brought into contact with each other. In this state, the long holes 18a and the bolt holes 20a of the left and right first and second discs 18 and 20 are connected to each other and fastened by bolts and nuts 21 and 21a, so that the pair of fixed sprocket units 16 are connected. The first disk 18 arranged and the second disks 20 provided at both ends of the rotary shaft 19 are set so as to be integrated. As the opening / closing operation force acts on the door body 1 based on the driving force of the opening / closing machine 7, the rotating shaft 19 rotates, and the fixed sprockets 17 of the left and right fixed sprocket units 16 are integrated with the rotation of the rotating shaft 19. By rotating, the left and right fixed sprockets 17 are set to rotate in a synchronized state, whereby the left and right chains 15a meshing with these fixed sprockets 17 are set to be transferred at the same speed. Yes.
As a result, the moving body 9 that forcibly moves based on the driving force of the opening / closing machine 7 opens and closes the door body 1, so that the door body 1 opens and closes in a state of receiving the urging force of the balance ammunition 12. In this case, even if the opening / closing driving force of the opening / closing machine is biased to the left side of the door body 1 and the door body 1 is forcibly moved, the pair of ropes 15 connected to the left and right sides of the lower end portion of the door body 1 When the chain 15a is transferred by the fixed sprockets 17 synchronized with each other, the left and right sides of the door body 1 are opened and closed in the same manner, and the opening and closing operation of either the left or right side of the door body 1 is delayed. In other words, it is configured so as to be able to perform a light and smooth opening / closing operation without being in a so-called shoulder-down state.

  By the way, when the opening / closing device is installed in the opening, or when the chain 15a or the like is elongated due to long-term use, the lower end of the door body 1 is not parallel to the floor surface but is inclined. Even if the door body 1 is in the fully closed posture, a gap may be formed between the left or right side of the door body 1 and the floor surface. If it does in this way, even if it opens and closes via a synchronizing means, the said clearance gap will not be eliminated with the door body 1 remaining inclined. On the other hand, the synchronization means of the present embodiment is provided with a posture adjusting means, and when a gap is formed between the door body 1 and the floor surface, the door can be eliminated. Posture adjustment means for adjusting the open / close posture of the body 1 is provided.

The posture adjusting means is a connection state of the first disc 18 on the fixed sprocket 17 side and the second disc 20 on the rotary shaft 19 side corresponding to the integration means of the present invention, and the fixed sprocket 17 and the rotary shaft. 19 is performed based on the adjustment of the integrated position in the circumferential direction with respect to 19.
When the door body 1 is in the fully closed posture, when the right side portion of the door body 1 is in contact with the floor surface and the left side portion is separated from the floor surface, for example, the first and second positions located on the left side The tightening by the bolts and nuts 21 and 21a for integrating the discs 18 and 20 is released, and the left fixed sprocket 17 is made free from the rotating shaft 19, and in this state, the fixed sprocket 17 is rotated to form a tooth body. The chain 15a meshing with 17a is transferred to the outdoor side, and the position of the closed position of the door body 1 is adjusted. Then, the elongated hole 18a of the first disc 18 in the state of the position adjustment and the second disc bolt hole 20a are communicated, and the bolt-nuts 21 and 21a are penetrated and tightened to be tightened. By integrating the disks 18 and 20, the opening / closing position on the left side of the door body 1 can be adjusted. After the position adjustment is performed in this way, the door body 1 is set to open and close in a state where the shoulder sprockets are not lowered based on the synchronized rotation of the fixed sprockets 17.

  In the present embodiment configured as described, the door body 1 opens and closes the opening by receiving guidance from guide rails 5 provided on both sides of the opening as the opening and closing machine 7 is driven forward and backward. The indoor side ends 12b of a pair of balance ammunition (pull ammunition) 12 are respectively connected to the left and right sides of the body 1, and the door body 1 opens and closes in a state of receiving the urging force of the balance ammunition 12. When the operation is performed, changes in the biasing force of the balance ammunition 12 with respect to the weight of the door body 1 coincide with each other, and a smooth opening / closing operation is realized. And in this thing, since the synchronous means is provided in the right-and-left power transmission path formed between the right-and-left both sides of the door body 1 and a pair of balance ammunition 12, the opening / closing operation which acts on the door body 1 is provided. Even if the force is biased in the left-right direction, there is no problem that one side portion of the door body 1 is lowered and the lower end portion of the door body 1 is opened and closed, and the guide rail 5 is smoothly moved. And it can be set as the overhead type door body 1 which opens and closes lightly.

  In addition, in the case where the present invention is implemented, the chain 15a portion of the rope 15 drawn out from each balance ammunition 12 to the indoor side is routed to the outdoor side so as to be connected to the left and right side portions of the door body 1. For this reason, the pair of fixed sprockets 17 provided on both side portions on the indoor side required for this purpose are engaged with each other and the fixed sprockets 17 are synchronized with each other, so that the members can be shared and the structure can be simplified.

  In addition, in this case, a rotating shaft 19 that is long in the left-right direction is used as a member for synchronizing the fixed sprockets 17. However, since the rotating shaft 19 is provided on the indoor side, it obstructs the opening. Therefore, it is possible to ensure a large opening height.

  Further, in this structure, the pair of left and right fixed sprockets 17 and the left and right ends of the rotary shaft 19 are integrated (integrated) via the first and second disks 18 and 20, Since the posture adjusting means is provided between the left and right sides of the door body 1, the integration of any one of the fixed sprocket 17 and the rotating shaft 19 is released. Thus, the fixed sprocket 17 can be easily adjusted by rotating it in a free state.

  Further, in this structure, the chain 15a necessary for constituting the synchronizing means among the ropes 15 constituting the power transmission path is transferred to the fixed and movable sprockets 14 and 17 in the process of opening and closing the door body 1. Since the portion that is arranged only in the portion that interferes with the door body 1 is configured by the wire 15c, the door body 1 is not damaged, and the door body 1 can be protected.

  In addition, in this device, the opening and closing device 7 is used as a means for applying an opening / closing operation force to the door body 1 so that automatic opening and closing can be performed, so that the operability can be improved. Since the machine 7 is provided in the left side portion on the indoor side and is interlocked and connected to forcibly displace the left side portion of the door body 1, it is connected to the opening and closing machine 7, the traveling rail 8 provided in the opening and closing machine 7, and the door body 1. The members such as the moving body 9 to be moved are provided offset to the left side, so that the opening can be largely secured without obstructing the opening. In addition, when the drive of the opening / closing machine 7 is stopped, the output shaft is locked, so that the opening of the door body 1 is restricted. However, when the opening / closing machine 7 is provided so as to be offset to one side of the door body 1, the door body 1 There is a risk that the other side of the will be opened. However, in this case, since the left and right power transmission paths are synchronized, even if any part of the door body 1 in the left-right direction is lifted, the opening restriction is made and the door body 1 is illegally intruded when the door body 1 is closed. Can be prevented and crime prevention is improved.

Of course, the present invention is not limited to the above embodiment, and may be configured as in the second embodiment shown in FIGS.
The door body 1 of the overhead door of the second embodiment is exactly the same as the door body 1 of the above-described embodiment, and the power transmission path formed between the door body 1 and the balance ammunition is the same. Since these components are configured, the same symbols are attached to these components, and description thereof is omitted. And the connection structure of the rotating shaft 22 provided in order to synchronize a power transmission path | route and the fixed sprocket unit 16 is also the structure similar to the said embodiment. In this device, the opening / closing machine 23 is offset from the left side portion of the ceiling portion on the indoor side, and a driving sprocket 23b is integrally provided on the output shaft (driving shaft) 23a of the opening / closing machine 23. ing. On the other hand, a driven sprocket 22a is integrally fitted on the rotating shaft 22 on the left side so as to face the drive sprocket 23b, and a chain 23c is wound around the drive sprocket 23b and the driven sprocket 22a. Thus, the driving force of the opening / closing device 23 is linked to the rotary shaft 22. Then, as the opening / closing machine 23 is driven, the rotating shaft 22 rotates, whereby the door body 1 is opened and closed. Even in this case, the left and right power transmission paths are synchronized by the rotating shaft 22 so that the door body 1 can be opened and closed smoothly and lightly, and the opening / closing machine 23 and the rotating shaft 22 do not interfere with the opening. What can be done is the same as in the previous embodiment.
Further, in the case of such a configuration, the opening / closing device 23 directly drives the rotary shaft 22 to rotate, so that the moving body and members such as a traveling rail for the moving body to travel as in the first embodiment are provided. This eliminates the need for space saving and simplification of the member configuration.

Further, the synchronization means is not limited to synchronizing the fixed sprockets arranged on the pair of indoor sides, and connects the rope arranged between the tension grenade and the opening / closing body to the opening / closing body. In order to guide to the opening side as much as possible, a pair of guide pulleys provided on the left and right force side portions above the opening portion are used as guide sprockets, while a pair of cords connected to the opening / closing body is used as a chain to guide the chain. It is good also as a structure which winds around a sprocket and synchronizes these pair of guide sprockets.
Further, it is possible to use a toothed belt (timing belt) instead of the chain and a timing pulley instead of the sprocket.

It is a schematic perspective view of an overhead type door. It is the top view which notched a part of overhead type door. It is the side view which notched some overhead type doors. 4A, 4B, and 4C are a rear view, a side view, and a cross-sectional view taken along line XX in FIG. 4A, respectively. 5A and 5B are a side view of the guide rail portion and a side view of the cover body of the case body, respectively. 6A, 6B, and 6C are respectively a left side view of FIG. 5A, an XX sectional view of FIG. 5A, and a YY sectional view of FIG. . 7A and 7B are a partial plan view and a right side view, respectively, of FIG. FIGS. 8A, 8B, and 8C are a side view, a front view, and a side view of the fixed sprocket unit, respectively. 9A and 9B are a front view and a side view of the rotating shaft, respectively. FIGS. 10A and 10B are respectively an enlarged plan view of a main part and a cross-sectional view taken along line XX in FIG. It is the top view which notched a part in the overhead type door of 2nd embodiment. It is side surface sectional drawing which notched a part in the overhead type door of 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door body 2 Panel body 3 1st connection member 4 2nd connection member 5 Guide rail 5i slot 7 opening / closing machine 8 traveling rail 9 moving body 10 case body 12 balance ammunition machine 13 movable sprocket unit 14 movable sprocket 15 cable 15a chain 16 Fixed sprocket unit 17 Fixed sprocket 18 First disc 18a Long hole 19 Rotating shaft

Claims (7)

  Both sides of the opening / closing body formed by connecting a plurality of panel bodies in the vertical direction are movably guided from the housing opening to an L-shaped guide rail along the ceiling, and the opening / closing body is provided on both sides of the opening / closing body. One end of a pair of tension ammunition balanced to its own weight is connected to each other, and the opening / closing operation of the opening / closing body is performed under the urging force of these tension ammunition. A switchgear for a building in which a pair of power transmission paths formed between one end portion of the tension ammunition is provided with a synchronizing means for synchronizing the power transmission state of each other.   A pair of power transmission paths, one end of a chain connected to a pair of pulling ammunition is extended to the indoor side, and these extended parts are arranged on both sides of the indoor side to transfer the chain at a predetermined speed. The construction opening / closing device according to claim 1, wherein the construction is configured such that the sprocket is wound around and pulled out to the outside to reach both sides of the opening / closing body, and the pair of sprockets are synchronized by a synchronizing means.   The building opening and closing device according to claim 1 or 2, wherein the synchronization means is constituted by a rotating shaft that rotates integrally with a pair of sprockets.   Each sprocket and the rotation shaft are connected to each other through an integration means, and each integration means adjusts the integration position of each sprocket and the rotation shaft in the circumferential direction so that both sides of the opening / closing body are adjusted. 4. The architectural opening / closing device according to claim 3, further comprising posture adjusting means for individually adjusting the opening / closing posture of each part.   The chain connected to the tension ammunition is provided in a range in which the sprocket is transferred in accordance with the opening / closing operation of the opening / closing body, and a wire is connected between one end of the chain and the opening / closing body. The building switchgear according to claim 1.   The opening / closing body is linked to the opening / closing device to open / close, and the driving force of the opening / closing device is linked to the opening / closing body while being linked to the left / right direction. The switchgear for building as described.   The opening / closing body is linked to an opening / closing machine to open / close, and the driving force of the opening / closing machine is linked to the opening / closing body via a rotating shaft. Switchgear.

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