JP2011226145A - Automatic door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic door device which can compulsively and more quietly position a door at a position even if it is the position to which the door should be compulsively moved or in the vicinity thereof.SOLUTION: In an automatic door device having a compulsive drive mechanism 30, which positions a door 10 at a compulsive position, the compulsive drive mechanism 30 comprises: a cylinder 31a in which a piston is reciprocatably housed and which has pores formed in each of the both ends and opened to the air; a driving member 32 which is provided linear-movably along the cylinder 31a between a standby position Pw and an operation position Po; an energizing mechanism 33 which urges the driving member 32 toward the operating position; a receiving member 34 which is secured on the door 10 engageably with the driving member 32; a holding mechanism 35 which releasably holds the driving member 32 at the standby position Pw against the energizing force of the energizing mechanism 33; and a connecting mechanism 36a which connects the driving member 32 to a piston 311a in the cylinder 31a.

Description

  The present invention relates to an automatic door device having a forcible drive mechanism for forcibly positioning a door that can move straight between an open position and a closed position at a forced position defined in either the open position or the closed position. .

  Conventionally, an automatic door device used as a fire door or an escape door has been proposed (see Patent Document 1 and Patent Document 2). This automatic door device has a structure in which a door that can move straight between an open position and a closed position is forcibly moved to a closed position or an open position in an emergency such as a fire. Specifically, in a state in which an expansion / contraction moving part that contracts by an internal spring extends, an end plate (magnetic plate) is releasably held by a holding mechanism (electromagnet), and an engagement plate loosely fitted to the expansion / contraction moving part is provided. It is fixed to the door. When the door is normally opened and closed, the engagement plate integrated with the door moves along with the door along the telescopic moving portion. On the other hand, in the event of an emergency such as a fire, the holding mechanism releases the tip of the telescopic moving part. Then, the expansion / contraction movement part contracts, and the tip part (magnetic plate) hits the engagement plate fixed to the door, and the contraction force of the extension / contraction movement part acts on the door through the engagement plate from the tip part, and as a result, The door is moved in the contraction direction of the expansion / contraction moving part and is forcibly moved to the open position or the closed position.

JP 2000-257328 A JP 2000-257329 A

  However, in the conventional automatic door device as described above, when the door is originally in a position where the door should be forcibly moved or in the vicinity thereof, for example, in a closed position, the holding mechanism is provided with a telescopic moving portion in an emergency such as a fire. When the distal end is released, the distal end of the expansion / contraction moving part contracted by the spring collides with an engagement plate fixed to the door. In particular, a fireproof door is heavy, and in order to force the heavy door to move with the expansion and contraction force of the expansion and contraction movement part, it is necessary to contract the expansion and contraction movement part with a spring having a relatively large pulling force. is there. For this reason, when the tip of the telescopic moving part with the holding mechanism extended is released, the tip of the telescopic moving part moves at a considerable speed, so that it collides with the engagement plate fixed to the door with a very large force. To do. Therefore, it is necessary to increase the strength of the distal end portion of the expansion / contraction moving portion and the engagement plate, and the structure for fixing the engagement plate to the door becomes large.

  Further, in such an automatic door device, it is necessary to periodically check the operation of each part in preparation for an emergency such as a fire. In the inspection of the operation for forcibly moving the door to the open position or the closed position, if the tip of the telescopic moving part collides with the engagement plate fixed to the door at a high speed, the collision sound is very loud. For this reason, the inspection work environment is deteriorated, and noise to the surroundings becomes large.

  The present invention has been made in view of such circumstances, and even when the door is originally in a position where it should be forcibly moved or in the vicinity thereof, an automatic door which can position the door more silently. A device is provided.

  An automatic door device according to the present invention includes a door that can move straight between an open position and a closed position, a normal drive mechanism that moves the door, and a position where the door is moved by the normal drive mechanism. Regardless, an automatic door device having a forced drive mechanism forcibly positioned at any one of the open position and the closed position, wherein the forced drive mechanism includes a linear motion path of the door. Cylinders installed parallel to each other, in which pistons are accommodated so as to be reciprocable and in which both ends are open to the atmosphere, and the doors are opened and closed along the cylinders. A drive member provided so as to be linearly movable between a standby position on the position side that is not defined as the forced position of the positions and an operating position on the forced position side, and the drive member at the operating position. An urging mechanism that urges the urging mechanism; a receiving member that is fixed to the door so as to be engageable with the driving member that is moved to the operating position by the urging force of the urging mechanism; A holding mechanism that releasably holds the standby position against the urging force by the mechanism, and the drive member and the piston so that the piston moves in the cylinder as the drive member linearly moves. It becomes the structure which has a connection mechanism to connect.

  With such a configuration, the holding mechanism is driven from a state in which the driving member biased toward the operating position by the biasing mechanism is held at the standby position against the biasing force of the biasing mechanism by the holding mechanism. When the member is released, the driving member moves straight from the standby position toward the operating position by the urging force of the urging mechanism. At that time, the piston connected to the driving member by the connecting mechanism moves in the cylinder. The air in the cylinder on the side where the piston moves is compressed while being discharged from the pores at the end, and a drag acts on the moving piston as the air is compressed. The drag force acting on the piston reduces the speed at which the drive member connected to the piston moves linearly. When the driving member engages with the receiving member fixed to the door in a state where the speed is reduced and the driving member moves to the operating position by the urging force of the urging mechanism, the driving member moves the door through the receiving member. Is pushed and placed in the forced position.

  In the automatic door device according to the present invention, the driving member includes a sliding block that slides on an outer peripheral surface of the cylinder, and a protruding member provided on the sliding member so that the receiving member can be engaged. It can be set as the structure which has these.

  With such a configuration, the drive member moves linearly while being guided by the cylinder. Therefore, the drive member is reliably positioned between the standby position and the operation position along the cylinder without providing any other guide mechanism. You will be able to go straight ahead.

  Further, in the automatic door device according to the present invention, the coupling mechanism is fixed to an end portion of the driving member on the standby position side, is hung on a first pulley, enters the cylinder from one end portion thereof, and the piston A first wire fixed to one end of the piston, and a second pulley fixed to an end of the drive member on the operating position side and entering the cylinder from the other end, and the other end of the piston The piston connected to the first wire and the second wire in the cylinder moves straight in the opposite direction to the drive member in accordance with the straight movement of the drive member. Can be configured.

  With such a configuration, the drive member, the first wire, the piston in the cylinder, and the second wire are connected in an annular shape. Therefore, if the drive member moves straight along the cylinder, This ensures that the piston moves straight in the opposite direction to the drive member.

  Further, in the automatic door device according to the present invention, the second wire has the pore formed in the end portion of the cylinder on the side where the piston moves as the driving member moves to the standby position. It can be set as the structure which is a hole which passes.

  With such a configuration, the piston moves from the hole through which the second wire passes without forming a special hole at the end of the cylinder on the side where the piston moves as the drive member moves to the standby position. As a result, air is drawn into the cylinder and discharged.

  Furthermore, in the automatic door device according to the present invention, an adjustment mechanism that adjusts the size of the pore formed at the end of the cylinder on the side where the piston moves as the drive member moves to the operating position. It can be set as the structure which has these.

  With such a configuration, it becomes possible to adjust the size of the pore formed in the end of the cylinder on the side where the piston moves as the driving member moves to the operating position. When moving to the operating position, the magnitude of the drag force caused by the compressed air of the piston moving in the cylinder can be adjusted. Thereby, the moving speed of the driving member to the moving position can be adjusted.

  Further, in the automatic door device according to the present invention, the holding mechanism is connected to a hook member provided in the drive member and a plunger held in a suction position by a suction action of an energized solenoid, and the hook And a hook member that is urged in the direction of the operation position together with the drive member by the urging force of the urging mechanism when the attraction action by the solenoid of the plunger is released. The engagement with the lock member can be released.

  With such a configuration, in a state where the solenoid is energized, the lock member connected to the plunger attracted by the solenoid engages with the hook member provided in the drive member, thereby increasing the biasing force of the biasing mechanism. The drive member can be held at the standby position against this. When the energization of the solenoid is interrupted and the attracting action of the plunger is released, the engagement between the hook member and the lock member is released, and the driving member is moved from the standby position by the urging force of the urging mechanism. Go straight to the operating position.

  Further, in the automatic door device according to the present invention, the drive member is provided by a plurality of the cylinders, wherein the coupling mechanism is provided for each of the plurality of cylinders, and the pistons of the plurality of cylinders correspond to each other. It can be set as the structure connected to.

  With such a configuration, each of the plurality of pistons accommodated in the plurality of cylinders is coupled to the drive member by the coupling mechanism, so that the drag force acting on the piston moving in each cylinder as the drive member moves is reduced. Superimpose and act on the drive member. As a result, the moving speed of the driving member can be further reduced.

  According to the automatic door device of the present invention, the piston in the cylinder connected to the driving member by the connecting mechanism can reduce the moving speed when the driving member moves straight from the standby position to the operating position. Even when the door is originally in a position where it should be forcibly moved or in the vicinity thereof, the impact force when the drive member collides with the receiving member fixed to the door can be reduced, and the door can be moved more quietly. It can be positioned at that position. As a result, there is no need to make the drive member, the receiving member, and the receiving member attached to the door in a particularly strong structure, and noise can be detected even when checking the operation for forcibly moving the door to the open position or the closed position. Occurrence can be minimized.

It is a figure showing the whole automatic door device composition concerning one embodiment of the present invention. It is a figure which shows the front external appearance of the forced drive mechanism used for the automatic door apparatus shown in FIG. It is a figure which shows the side external appearance of the forced drive mechanism used for the automatic door apparatus shown in FIG. It is a figure which shows the downward external appearance of the forced drive mechanism used for the automatic door apparatus shown in FIG. It is sectional drawing which shows the cross-section of the cylinder used for a forced drive mechanism. It is sectional drawing (the 1) which shows the detailed structure of the one end part of the cylinder used for a forced drive mechanism. It is sectional drawing (the 2) which shows the detailed structure of the one end part of the cylinder used for a forced drive mechanism. It is a figure which shows the holding mechanism of the state holding the slide unit (drive member). It is a figure which shows the holding mechanism of the state which released | released holding | maintenance of the slide unit (drive member). It is a figure which shows the state which the linear motion from the open position Pdo of the door driven by the normal drive mechanism in the automatic door apparatus to the closed position Pdc was completed. It is a figure which shows the state which the door driven by the forced drive mechanism in an automatic door apparatus is forcedly moved from the open position Pdo to the closed position Pdc determined as a forced position. It is a figure which shows the state in which the door was located in the forced position (closed position Pdc) by the forced drive mechanism in the automatic door apparatus. It is a figure which shows the relationship between the slide unit (driving member) in the standby position Pw, and the receiving metal fitting (receiving member) fixed to the door in a closed position. It is a figure which shows the state which pushed the receiving metal fitting (receiving member) fixed to the door by the slide unit in the operation position Po, and positioned the said door in the closed position (forced position). It is a figure which shows the forced drive mechanism of the state in the middle of the slide unit moving from the stand-by position Pw to the operation position Po in the middle toward the receiving metal fitting (receiving member) fixed to the door in the closed position (forced position). In an automatic door apparatus, it is a figure which shows the state in the middle of the slide unit of a forced drive mechanism toward the receiving metal fitting (receiving member) fixed to the door in a closed position (forced position). It is a characteristic view which shows the relationship between the moving distance and moving speed of a slide unit at the time of using one cylinder. It is a characteristic view which shows the relationship between the moving distance and moving speed of a slide unit at the time of using two cylinders.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  An automatic door device according to an embodiment of the present invention is configured as shown in FIG. In this automatic door device, the door that moves straight between the open position and the closed position is also used as a fire door, and is forced to be positioned in the closed position (forced position) when a fire occurs. It has become.

  In FIG. 1, the door 10 moves straight between the open position Pdo and the closed position Pdc while the pair of door units 12 a and 12 b fixed to the upper edge of the door 10 move on the rail 24. ing. This automatic door device includes a normal drive mechanism 20 that moves the door 10 along the rail 24 between the open position Pdo and the closed position Pdc, and regardless of the position in which the door 10 is moved by the normal drive mechanism 20. For example, a forced drive mechanism 30 that is determined to be forcibly positioned, for example, moved to the closed position Pdc and positioned.

  The normal drive mechanism 20 is wound around the drive motor 21, a pair of pulleys 23a and 23b arranged along the rails 24 at intervals determined based on the movement range of the door 10, and the pulleys 23a and 23b. And the motor 21 rotates one pulley 23a forward and backward through a power transmission mechanism (not shown) such as a gear, whereby the drive belt 22 circulates in the forward and reverse directions. It is like that. The bracket 11 is fixed to the upper edge of the door 10 so as to be sandwiched between the door cart units 12a and 12b. The bracket 11 is fixed to the drive belt 22, and the two pulleys 12a, A mounting bracket 13 that moves left and right between 12 b is fixed to the bracket 11. In such a normal drive mechanism 20, when the mounting bracket 13 moves left and right between the pair of pulleys 23 a and 23 b in accordance with the forward and reverse circulation movement of the driving belt 22 by the motor 21, the door integrated with the mounting bracket 13. 10 moves straight between the open position Pdo and the closed position Pdc while being guided along the rails 24 by the door pulley units 12a and 12b.

  The forced drive mechanism 30 is arranged in parallel to the normal drive mechanism 20 described above. The detailed configuration of the forced drive mechanism 30 is shown in FIGS. 2, 3, 4, and 5. 2 shows a front appearance of the forced drive mechanism 30, FIG. 3 shows a side view of the forced drive mechanism 30, FIG. 4 shows a lower appearance of the configuration drive mechanism, and FIG. The cross-sectional structure of the cylinder used for a forced drive mechanism is shown.

  Referring to FIGS. 2 to 5 together with FIG. 1, the forced drive mechanism 30 includes two cylinders, a first cylinder 31a and a second cylinder 31b, which are installed so as to be parallel to the drive belt 22 of the normal drive mechanism 20 described above. A cylinder is provided. The first cylinder 31a and the second cylinder 31b are arranged at a predetermined interval in the vertical direction (see FIGS. 2 and 3), and both end portions thereof are fixed to the base plates 41 and. A slide unit 32 (drive member) is slidably fitted to the first cylinder 31a and the second cylinder 31b. The slide unit 32 has a structure in which a metal fitting 322 is fixed to the front surface of a slide block 321 slidably fitted to the first cylinder 31a and the second cylinder 31b. The metal fitting 322 protrudes along the second cylinder 31b from the driving metal block 322a (projection member) that rises perpendicularly to the front surface of the sliding block 321, and faces the one base plate 41. The extending hook metal part 322b is formed (see FIGS. 2 and 4).

  The base plate 42 is provided with a spring spring 33 that can be expanded and contracted, and the tip of the spring spring 33 is fixed to the end of the slide unit 32 (sliding block 321). The slide unit 32 is always urged toward the operating position Po on the base plate 42 side by the return force of the mainspring spring 33. A holding mechanism 35 is provided on the base plate 41 opposite to the base plate 4 on which the spring spring 33 is provided. Although the detailed structure of the holding mechanism 35 will be described later, the holding mechanism 35 has a structure that releasably engages the hook metal part 322b protruding from the slide unit 32, and is a slide that is urged toward the operating position Po by the mainspring spring 33. The unit 32 is held at the standby position Pw against the biasing force.

  The piston 311a is accommodated in the first cylinder 31a so as to be able to reciprocate. Similarly, the piston 311b is accommodated in the second cylinder 31b so as to be capable of reciprocating. A space between the outer peripheral surfaces of the pistons 311a and 311b and the corresponding inner peripheral surfaces of the cylinders 31a and 31b is sealed by a seal member (not shown), and the portions of the pistons 311a and 311b are passed through the cylinders 31a and 31b. The air flow is blocked.

  The slide unit 32 that linearly moves along the first cylinder 31a and the second cylinder 31b and the piston 311a in the first cylinder 31a are connected by the first connecting mechanism 36a, and the slide unit 32 and the second cylinder 31b The piston 311b is connected by the second connecting mechanism 36b. The first coupling mechanism 36a includes a pulley 362a (first pulley) provided on the base plate 41 so as to face one end of the first cylinder 31a, and a base plate so as to face the other end of the first cylinder 31a. 42 includes a pulley 364a (second pulley) provided at 42 and two wires 361a and 363a. Then, a wire 361a (first wire) fixed to the end of the slide unit 32 (sliding block 321) on the standby position Pw side is hung on the pulley 362a, and the inside of the first cylinder 31a is inserted into the inside of the hole. The wire 363a (second wire) fixed to one end portion of the piston 311a and fixed to the end portion on the operation position Po side of the slide unit 32 (sliding block 321) is hung on the pulley 364a to be hooked to the first cylinder. The other end portion of 31a enters the inside thereof and is fixed to the other end portion of the piston 311a.

  The second coupling mechanism 36b includes a pulley 362b (first pulley) provided on the base plate 41 so as to face one end of the second cylinder 31b, and a base plate so as to face the other end of the second cylinder 31b. 42 includes a pulley 364b (second pulley) provided at 42 and two wires 361b and 363b. Then, a wire 361b (first wire) fixed to the end of the slide unit 32 (sliding block 321) on the standby position Pw side is hung on the pulley 362b, and the inside of the second cylinder 31b passes through the pore of the end. And is fixed to one end of the piston 311b. In addition, a wire 363b (second wire) fixed to the end of the slide unit 32 (sliding block 321) on the operation position Po side is hung on the pulley 364b and is passed through the pore at the other end of the second cylinder 31b. It enters the inside and is fixed to the other end of the piston 311b.

  In this way, the slide unit 32 (sliding block 321), the piston 311a in the first cylinder 31a and the two wires 361a and 363a are connected in an annular shape, and in parallel therewith, in the slide unit 32 and the second cylinder 31b. The piston 311b and the two wires 361b and 363b are connected in an annular shape. Thus, when the slide unit 32 (sliding block 321) moves linearly by sliding on the first cylinder 31a and the second cylinder 31b, each piston 311a is linked in the first cylinder 31a and the second cylinder 31b. 311b moves straight in the direction opposite to the moving direction of the slide unit 32.

  As shown in FIG. 5 in which the cross-sectional structure of the second cylinder 31b is shown on behalf of the first and second cylinders 31a, 31b, the pore 312b formed at the end fixed to the base plate 42 of the cylinder 31b is The air between the piston 311b in the cylinder 31b compressed by the movement of the piston 311b and the end portion in which the pore 312b is formed, as well as the through hole of the wire 363b connecting the piston 311b and the slide unit 32 It has a function to discharge gradually. On the other hand, as shown in FIG. 6A, the cross-sectional structure of the end of the first cylinder 31a is shown on behalf of the first and second cylinders 31a and 31b, and the reverse side fixed to the base plate 41 of the cylinder 31a is shown. A pore as a through hole for the wire 361a is also formed at the end, and the seal member 315a is packed in this pore so that air in each cylinder 31a is not discharged from this pore. It has become. A leak hole 313a is separately formed at the end of each cylinder 31a in which the pores to be filled with the seal member 315a are formed. An adjustment screw 314a for adjusting the opening size is fitted into the leak hole 313a. Then, as shown in FIG. 6B, by operating the adjusting screw 314a to adjust the opening size of the leak hole 313a, the air compressed by the movement of the piston 311a can be easily discharged from the leak hole 313a. Can be adjusted.

  The holding mechanism 35 provided on the base plate 41 is configured as shown in FIGS. 7A and 7B.

  The holding mechanism 35 includes a direct acting solenoid unit 351, an L-shaped lock member 354, and a connecting member 352 that connects a plunger 351 b of the solenoid unit 351 and one end of the lock member 354. The solenoid main body 351a of the solenoid unit 351 is always energized and draws the plunger 351b (state shown in FIG. 7A). The end of the plunger 351b and one end of the connecting member 352 are rotatably connected by a coupling pin 353a, and the one end of the lock member 354 and the other end of the connecting member 352 are rotatably connected by a connecting pin 353b. Has been. A hook pin 355 is provided at the end of the lock member 354 opposite to the end connected to the connecting member 352, and the tip of the hook metal part 322 b extending from the slide unit 32 is connected to the hook pin 355 of the lock member 354. It is supposed to be caught.

  In such a holding mechanism 35, in a normal state where the solenoid main body 351a of the solenoid unit 351 is energized and the plunger 351b is drawn into the solenoid main body 351a, as shown in FIG. 7A, the biasing force of the mainspring spring 33 is resisted. The hook metal part 322b of the slide unit 32 positioned at the standby position Pw is hooked on the hook pin 355 of the lock member 355, and the slide unit 32 is held at the standby position Pw (locked state). On the other hand, when the solenoid body 351a is de-energized (non-energized), the plunger 351b of the solenoid unit 351 is pulled as shown in FIG. 7B as the slide unit 32 is pulled toward the operating position Po by the mainspring spring 33. Is pulled out from the solenoid body 351a. When the plunger 351b is pulled out from the solenoid body 351a, the connected state of the plunger 351b, the connecting member 352, and the lock member 354 is loosened, and the lock member 354 is slightly rotated around the connecting pin 353b of the connecting member 352, and the hook fitting The hook pin 355 of the lock member 354 is released from the portion 322b (released state). As described above, when the hook pin 355 of the lock member 354 is detached from the hook metal part 322b, the slide unit 32 is pulled by the urging force (returning force) of the mainspring spring 33 and moves toward the operating position Po.

  Returning to FIG. 1, a receiving bracket 34 (receiving member) that extends to the path of the linear movement of the slide unit 32 in the forced drive mechanism 30 is fixed to a predetermined portion of the bracket 11 fixed to the upper edge of the door 10. Yes. When the slide unit 32 is released from the holding mechanism 35 and linearly moves from the standby position Pw to the operating position Po by the return force of the mainspring spring 33, the drive fitting portion 322a of the slide unit 32 engages with the receiving fitting 34, By pushing the receiving bracket 34, the door 10 is positioned at the closed position Pdc determined as the forced position.

  The operation of the automatic door device having the above-described structure will be described.

  In a normal state, the hook fitting 322b of the slide unit 32 in the forcible drive mechanism 30 is hooked on the hook pin 355 of the lock member 354 in the holding mechanism 35 and attached to the operating position Po by the mainspring spring 33 as shown in FIG. 7A. The slide unit 32 to be energized is held at the standby position Pw (see FIGS. 1 and 11). At this time, the pistons 311a and 311b in the respective cylinders 31a and 31b are located on the operation position Po side opposite to the slide unit 32 held at the standby position Pw (see FIG. 11). In this state, the door 10 is not interfered with the slide unit 32 held at the standby position Pw by the holding mechanism 35 by the normal drive mechanism 20 (motor 21, pulleys 23a and 23b, drive belt 22). It moves straight between the open position Pdo shown and the closed position Pdc shown in FIG. 8 (normal opening / closing operation of the door 10).

  When a fire occurs and the energization of the solenoid body 351a of the holding mechanism 35 in the forcible drive mechanism 30 is interrupted positively or by a fire in the energization path, the slide unit 32 (hook metal part 322b) The holding state by the holding mechanism 35 (the hook pin 355 of the lock member 354) is released (see FIG. 7B), and the slide unit 32 pulled by the mainspring spring 33 moves over the first cylinder 31a and the second cylinder 31b from the standby position Pw. Slide to move to the operating position Po. At this time, if the door 10 is in the open position Pdo, the drive fitting portion 322a of the slide unit 32 hits the receiving fitting 34 located in the vicinity of the standby position Pw as shown in FIG. 11, and reaches the operating position Po of the slide unit 32. As a result, the door 10 is pushed in the direction of the closed position Pdc via the metal fitting 34, and as shown in FIG. 9, the door 10 moves together with the slide unit 32 toward the closed position Pdc. When the slide unit 32 reaches the operating position Po as shown in FIG. 12, the door 10 is positioned at the closed position Pdc determined as the forced position as shown in FIG.

  When the forced drive mechanism 30 operates as described above, the motor 21 of the normal drive mechanism 20 is not energized and is not braked, so the mounting bracket 13 is attached to the drive belt 22. The door 10 coupled thereto can move together with the slide unit 32 without receiving a large resistance force from the normal drive mechanism 20.

  When the slide unit 32 moves from the standby position Pw to the operating position Po, the pistons 311a and 311b in the cylinders 31a and 31b are opposite to the moving direction of the slide unit 32, as shown in FIGS. Then, it moves from the operation position Po side to the standby position Pw side. At the beginning of the movement of the pistons 311a and 311b, spaces on both sides of the pistons 311a and 311b of the cylinders 31a and 31b are formed in the pores (312b and 313a: see FIGS. 5, 6A and 6B). Since both of the spaces are at atmospheric pressure, the pistons 311 a and 311 b move at a relatively high speed as the slide unit 32 moves. In the process, air is discharged from a leak hole 313a (see FIGS. 6A and 6B) provided at the end on the base plate 41 side of each cylinder 31a, 31b, but with the movement of each piston 311a, 311b. Air in the space on the base plate 41 side (standby position Pw side) is compressed, and drag acts on the pistons 311a and 311b that move as the air is compressed. The slide unit 32 connected to the pistons 311a and 311b is moved while the speed is reduced by the drag acting on the pistons 311a and 311b to reach the operating position Po.

  The door 10 integrated with the receiving bracket 34 pushed by the drive bracket portion 322a of the slide unit 32 moving in this way also moves at a relatively high speed from the open position Pdo, but is closed while gradually decreasing the speed from the middle. It moves toward the position Pdc and is finally positioned at the closed position Pdc.

  Unlike the above-described case, when the slide unit 32 pulled by the mainspring spring 33 slides on the first cylinder 31a and the second cylinder 31b from the standby position Pw to the operation position Po, the door 10 is originally forced. As shown in FIG. 13, the slide unit 32 connected to the pistons 311a and 311b is initially moved by the movement of the pistons 311a and 311b in the cylinders 31a and 31b. , Moved from the standby position Pw at a relatively high speed, moved at a lower speed from a certain position P, and moved to the door operating position Po as shown in FIG. When it reaches, the drive fitting part 322a of the slide unit 32 hits the receiving fitting 34. In this state, the movement of the receiving bracket 34 is restricted, and the door 10 integrated with the receiving bracket 34 is positioned at the closed position Pdc.

  According to the automatic door device as described above, the piston 311a, 311b in each of the cylinders 31a, 31b connected to the slide unit 32 by the first and second connection mechanisms 36a, 36b can move from the standby position Pw of the slide unit 32. Since the moving speed at the time of the straight movement to the operation position Po can be reduced, the drive fitting portion 322a of the slide unit 32 is attached to the door 10 even when the door 10 is originally in the closed position Pdc where it should be forcibly moved. The impact force at the time of collision with the fixed metal fitting 34 can be further reduced, and the door 10 can be positioned at the closed position Pdc more silently. As a result, there is no need to make the mounting of the metal fitting 322 (drive metal fitting portion 322a) of the slide unit 32, the metal fitting 34, and the metal fitting 34 to the door 10 in a particularly strong structure, and the door 10 is forcibly closed. Also in the inspection of the operation of moving to Pdc, the generation of noise can be minimized.

  Further, when the door 10 is in the open position Pdo which is not a position to be forcibly moved, the door 10 is positioned at the closed position Pdc at a lower speed and with less kinetic energy. Even if a person is caught in the door 10, damage to the person can be minimized.

  Further, after the inspection of the operation for forcibly moving the door 10 to the closed position Pdc is completed, high-pressure air is discharged from the leak holes 313a (see FIGS. 6A and 6B) formed at the ends of the cylinders 31a and 31b. By injecting into each cylinder 31a, 31b, each piston 311a, 311b is returned to the position before operation, that is, the slide unit 32 connected to each piston 311a, 311b is resisted against the return force of the mainspring spring 33. Returning to the standby position Pw can be performed relatively easily.

  In addition, in the forced drive mechanism 30 of the automatic door apparatus mentioned above, although two cylinders 31a and 31b were used, you may use one cylinder. The relationship between the moving distance and the moving speed of the slide unit 32 when one cylinder is used is as shown in FIG. 15A, for example, and the movement of the slide unit 32 when two cylinders 31a and 31b are used. The relationship between the distance and the moving speed is as shown in FIG. 15B, for example. In order to further reduce the speed at a shorter distance, it is advantageous to use two cylinders 31a and 31b. Therefore, a more preferable performance can be obtained by using two cylinders particularly in a door with a long stroke, but a practical performance can be obtained even with one cylinder. Further, even with a single cylinder, it is possible to approximate the characteristics when two cylinders 31a and 31b are used by adjusting the cross-sectional area of the cylinder.

  Further, the moving speed of the pistons 311a and 311b in the cylinders 31a and 31b is adjusted by adjusting the size of the opening of the leak hole 313a formed at the end of the cylinders 31a and 31b on the base plate 41 side with the adjusting screw 314a. That is, the moving speed of the slide unit 32 can be adjusted.

  Note that the number of cylinders may be three or more. However, when three or more cylinders are used, the structure is further complicated, and it is further difficult to adjust the three or more pistons to move in synchronization within each cylinder.

  The automatic door device described above is used as a fire door, and when a fire occurs, the door is positioned at a closed position Pdc determined as a forced position, but is used as an evacuation door. For example, when a fire occurs, the door may be positioned at the open position Pdo determined as the forced position.

  As described above, the automatic door device according to the present invention has an effect that even if the door is originally in a position where it should be forcibly moved, the door can be positioned more silently. As an automatic door device having a forcible drive mechanism that forcibly positions a door that can move straight between an open position and a closed position at a forced position defined in either the open position or the closed position Useful.

DESCRIPTION OF SYMBOLS 10 Door 11 Bracket 12a, 12b Door pulley unit 13 Mounting bracket 20 Normal drive mechanism 21 Motor 22 Drive belt 23a, 23b Pulley 24 Rail 30 Forced drive mechanism 31a 1st cylinder 311a Piston 312b Hole 313a Leak hole 314a Adjustment screw 31b 2nd cylinder 32 slide unit 322 metal fitting 322a drive metal fitting portion 322b hook metal fitting portion 33 spring spring 34 receiving metal fitting 35 holding mechanism 351 solenoid unit 351a solenoid body 351b plunger 352 connecting member 353a, 353b connecting pin 354 locking member 355 hooking pin 36a first connecting mechanism 36a Wire (first wire)
362a Pulley (first pulley)
363a wire (second wire)
364a Pulley (second pulley)
36b Second coupling mechanism 361b Wire (first wire)
362b Pulley (first pulley)
363b wire (second wire)
364b Pulley (second pulley)
41, 42 Base plate

Claims (7)

A door that can move straight between an open position and a closed position, a normal drive mechanism that moves the door, and the door is forced to be in the open position regardless of the position moved by the normal drive mechanism. And an automatic door device having a forced drive mechanism positioned at a forced position defined in any of the closed positions,
The forced drive mechanism is
A cylinder installed parallel to the straight path of the door, in which a piston is accommodated so as to be reciprocally movable, and has pores formed at both ends thereof to the atmosphere;
Along the cylinder, the door is provided so that it can move straight between a standby position on the position side that is not defined as the forced position among the open position and the closed position of the door, and an operating position on the forced position side. A drive member;
A biasing mechanism that biases the drive member toward the operating position;
A receiving member fixed to the door so as to be engageable with the driving member moved to the operating position by the urging force of the urging mechanism;
A holding mechanism that releasably holds the drive member at the standby position against the urging force of the urging mechanism;
An automatic door device having a coupling mechanism that couples the drive member and the piston so that the piston moves in the cylinder as the drive member moves straight.   2. The automatic door according to claim 1, wherein the driving member includes a sliding block that slides on an outer peripheral surface of the cylinder, and a protruding member that is provided on the sliding member so that the receiving member can be engaged. apparatus. The coupling mechanism is
A first wire fixed to the end of the drive member on the standby position side, hung on a first pulley, entering the cylinder from one end thereof, and fixed to one end of the piston;
A second wire fixed to the end of the driving member on the operating position side, hung on a second pulley, entering the cylinder from the other end, and fixed to the other end of the piston;
3. The automatic door device according to claim 1, wherein the piston connected by the first wire and the second wire linearly moves in a direction opposite to the driving member in the cylinder as the driving member linearly moves.   4. The automatic door according to claim 3, wherein the fine hole formed at the end of the cylinder on the side where the piston moves as the drive member moves to the standby position is a hole through which the second wire passes. apparatus.   5. The adjusting mechanism according to claim 1, further comprising: an adjusting mechanism that adjusts a size of the pore formed at an end of the cylinder on the side where the piston moves as the driving member moves to the operating position. Automatic door device as described. The holding mechanism includes a hook member provided on the driving member;
A lock member connected to the plunger held in the suction position by the suction action of the energized solenoid and engaged with the hook member;
The engagement of the hook member biased in the direction of the operating position together with the driving member by the biasing force of the biasing mechanism when the suction action of the solenoid of the plunger is released is released. The automatic door device according to any one of claims 1 to 5.   7. The device according to claim 1, wherein a plurality of the cylinders are provided, the coupling mechanism is provided for each of the plurality of cylinders, and the pistons of the plurality of cylinders are coupled to the driving member by corresponding coupling mechanisms. An automatic door device according to the above.

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