JP6468965B2 - Inspection door cover device - Google Patents

Description

  The present invention relates to an inspection door cover device that covers from above an inspection door that closes an inspection port formed in a ceiling.

  2. Description of the Related Art Conventionally, there is known an inspection door that is rotated between a closed door position that closes an inspection opening formed in the ceiling and an open position that extends downward from the ceiling and opens the inspection opening (for example, a patent) Reference 1).

JP 2009-41304 A

  However, when the position of the inspection door is a closed position for a long period of time, foreign matters such as dust accumulate on the upper surface of the inspection door. In this state, if the inspection door is displaced from the closed position to the open position, foreign matter that accumulates on the upper surface of the inspection door falls to the floor of the room through the inspection port, and the floor of the room becomes dirty. There was a problem.

  This invention provides the inspection door cover apparatus which can suppress that a foreign material accumulates on the upper surface of an inspection door.

The inspection door cover device according to the present invention is provided when the inspection door that is displaced between the closing position that closes the inspection opening formed in the ceiling and the opening position that extends downward from the ceiling and opens the inspection opening is in the closing position. An inspection door cover device that covers the inspection door from above, and by being deformed, a seat that is displaced between an extended position that covers the inspection door from above and a storage position where the upper surface of the inspection door is exposed , A displacement device that displaces the sheet in conjunction with the displacement .

  According to the inspection door cover device of the present invention, since the inspection door cover device is provided with a seat that is deformed to be displaced between the extended position that covers the inspection door from above and the storage position at which the upper surface of the inspection door is exposed. Even when the door is in the closed position for a long period of time, it is possible to prevent foreign matter from accumulating on the upper surface of the inspection door.

It is a side view which shows the inspection door cover apparatus which concerns on Embodiment 1 of this invention. It is a top view which shows the inspection door cover apparatus of FIG. It is a side view which shows the other state of the inspection door cover apparatus of FIG. It is a top view which shows the inspection door cover apparatus of FIG. It is a side view which shows the inspection door cover apparatus which concerns on Embodiment 2 of this invention. It is a side view which shows the other state of the inspection door cover apparatus of FIG. It is a side view which shows the inspection door cover apparatus which concerns on Embodiment 3 of this invention. It is a side view which shows the other state of the inspection door cover apparatus of FIG.

Embodiment 1 FIG.
1 is a side view showing an inspection door cover device according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing the inspection door cover device of FIG. 1, and FIG. 3 is another state of the inspection door cover device of FIG. FIG. 4 is a plan view showing the inspection door cover device of FIG. In the figure, an inspection port 11 is formed in the ceiling 1 of the room so that an operator can enter the back of the ceiling 1 from the room. An inspection door 2 is rotatably provided on the ceiling 1. The inspection door 2 is displaced between a door closing position where the inspection port 11 is closed and a door opening position where the inspection port 11 is opened by rotating about the rotation shaft 3 extending along the ceiling 1. The inspection door 2 is arranged on the same plane as the ceiling 1 when the position of the inspection door 2 is the closed position. On the other hand, the inspection door 2 is disposed so as to extend downward from the ceiling 1 when the position of the inspection door 2 is an open position.

  The inspection door cover device 4A is arranged on the upper surface of the ceiling 1 so as to cover the upper surface of the inspection door 2 when the position of the inspection door 2 is the closed position. The inspection door cover device 4A includes a sheet 401 that is displaced by being deformed between an extended position that covers the inspection door 2 from above and a storage position where the upper surface of the inspection door 2 is exposed, and a roller 402 on which the sheet 401 is wound. A pair of roller support members 403 that rotatably support the rollers 402, a sheet support member 404 that supports the leading end of the sheet 401 when the position of the sheet 401 is an overhang position, and the roller 402 And a foreign material storage box 405 provided on the ceiling 1. The leading end portion of the sheet 401 is a portion of the sheet 401 that is farthest from the roller 402.

  The sheet 401 is displaced from the extended position to the storage position by being wound around the roller 402, and is displaced from the storage position to the extended position by being sent out from the roller 402. The sheet 401 has an area larger than the area of the inspection port 11 when the position of the sheet 401 is the overhang position. In addition, the sheet 401 is disposed so as to cover the entire region of the inspection port 11 when the position of the sheet 401 is the overhang position. Therefore, the sheet 401 covers the entire area of the upper surface of the inspection door 2 when the position of the sheet 401 is the overhang position. Thereby, when the position of the sheet | seat 401 is an overhanging position, it is suppressed that the foreign material 5 accumulates on the upper surface of the inspection door 2. FIG.

  The roller 402 is arranged so that the axis of the roller 402 faces the same direction as the axis of the rotation shaft 3. The roller 402 may be arranged such that the axis of the roller 402 faces in a direction different from the axis of the rotation shaft 3.

  The pair of roller support members 403 are erected on the upper surface of the ceiling 1. The pair of roller support members have bearings (not shown), and both ends of the roller 402 are rotatably supported using the bearings. The pair of roller support members 403 includes springs (not shown) that urge the rollers 402 so that the position of the sheet 401 is displaced from the extended position to the storage position. Therefore, by pulling the sheet 401 from the storage position toward the extended position against the biasing force of the spring of the roller support member 403, the sheet 401 is displaced from the storage position to the extended position, and the tensile force on the sheet 401 is released. As a result, the sheet 401 is displaced from the extended position to the storage position.

  The sheet support member 404 is erected on the upper surface of the ceiling 1. The sheet support member 404 is adapted to engage with the leading end portion of the sheet 401 in the overhang position. When the engagement between the sheet support member 404 and the sheet 401 is released, the sheet 401 can be displaced from the extended position to the storage position.

  The foreign material box 405 is disposed adjacent to a portion of the sheet 401 wound around the roller 402. When the portion of the sheet 401 on which the foreign material 5 is placed reaches the roller 402, the portion of the sheet 401 on which the foreign material 5 is placed is wound on the roller 402, so that the foreign material 5 falls from the sheet 401 and the foreign material 5 enters the foreign material box. 405 is placed inside.

  Next, a procedure for opening the inspection port 11 and performing work behind the ceiling 1 will be described. First, the operator displaces the inspection door 2 from the closed position to the opened position (door opening process). Thereafter, the operator displaces the sheet 401 from the extended position to the storage position (storage process). In the storing step, the roller 402 is urged in a direction in which the sheet 401 is displaced from the protruding position to the storing position, so that the sheet 401 is wound around the roller 402 by separating the leading end portion of the sheet 401 from the sheet support member 404. Taken. When the roller support member 403 does not have a spring and the roller 402 is not biased, the worker rotates the roller 402 and winds the sheet 401 around the roller 402 in the storing step.

  In synchronization with the displacement of the sheet 401 from the protruding position to the storage position, the foreign substance 5 placed on the upper surface of the sheet 401 is put into the foreign substance containing box 405.

  When the work on the back of the ceiling 1 is completed, the operator displaces the sheet 401 from the storage position to the overhanging position (an overhanging step). Thereafter, the operator displaces the inspection door 2 from the door opening position to the door closing position (door closing process). Thus, the procedure for opening the inspection port 11 and performing work behind the ceiling 1 is completed.

  As described above, according to the inspection door cover device 4A according to the first embodiment of the present invention, the extended position that covers the inspection door 2 from above and the storage position where the upper surface of the inspection door 2 is exposed by deformation. Since the sheet 401 that is displaced between the inspection door 2 and the inspection door 2 is in a closed position for a long period of time, it is possible to prevent foreign matter 5 from accumulating on the upper surface of the inspection door 2. Can do.

  The inspection door cover device 4 </ b> A includes a roller 402 around which the sheet 401 is wound. The sheet 401 is displaced from the extended position to the storage position by being wound around the roller 402, and is stored in the storage position by being sent out from the roller 402. Therefore, by rotating the roller 402, the sheet 401 is taken up by the roller 402 and the sheet 401 is displaced from the extended position to the storage position, or the sheet 401 is fed out from the roller 402. The sheet 401 can be displaced from the storage position to the overhang position. Thereby, the sheet 401 can be easily displaced between the extended position and the storage position.

  In addition, the inspection door cover device 4A further includes a foreign matter storage box 405 provided adjacent to the sheet 401, and the foreign matter storage box 405 is interlocked with the displacement of the sheet 401 from the extended position to the storage position. Since the foreign substance 5 placed on the upper surface of the sheet 401 is put inside, the upper surface of the sheet 401 can be cleaned by displacing the sheet 401 from the extended position to the storage position.

  In the first embodiment, the configuration of the sheet 401 that is displaced from the extended position to the storage position by being wound around the roller 402 and that is displaced from the storage position to the extended position by being sent out from the roller 402 has been described. However, the sheet 401 may be configured to be displaced from the protruding position to the storage position by being folded, for example, like a curtain. In this case, since the roller 402 around which the sheet 401 is wound is not necessary, the configuration of the inspection door cover device 4A can be further simplified. Moreover, the structure which the sheet | seat 401 displaces between an overhang | projection position and a storage position by expanding / contracting may be sufficient.

  In the first embodiment, the configuration of the sheet 401 that is displaced from the extended position to the storage position by being wound around the roller 402 has been described. However, a portion protruding from the roller 402 toward the sheet support member 404 is cut off. Accordingly, the configuration of the sheet 401 that is displaced from the protruding position to the storage position may be employed. In this case, a portion of the sheet 401 wound around the roller 402 is newly fed out from the roller 402, and the sheet 401 is displaced from the storage position to the extended position. Thereby, every time the sheet 401 is displaced from the storage position to the extended position, the portion of the sheet 401 that covers the upper surface of the inspection door 2 can be renewed.

Embodiment 2. FIG.
5 is a side view showing an inspection door cover device according to Embodiment 2 of the present invention, and FIG. 6 is a side view showing another state of the inspection door cover device of FIG. The inspection door cover device 4 </ b> B further includes a displacement device 406 that displaces the seat 401 in conjunction with the displacement of the inspection door 2.

  The displacement device 406 is provided on the ceiling 1, a coaxial roller 407 formed integrally with the roller 402, a string portion 408 having a proximal end wound around the coaxial roller 407 and a distal end connected to the inspection door 2, and the ceiling 1. And a deflecting roller 409 around which a string portion 408 is wound. 5 and 6, the roller support member 403 on the near side of the pair of roller support members 403 is omitted.

  The coaxial roller 407 is arranged such that the axis of the coaxial roller 407 is arranged on the same straight line as the axis of the roller 402. The coaxial roller 407 rotates in the same direction as the rotation direction of the roller 402 when the roller 402 rotates.

  The string portion 408 is wound around the coaxial roller 407 or sent out from the coaxial roller 407 as the coaxial roller 407 rotates. Specifically, the string portion 408 is fed from the coaxial roller 407 when the roller 402 rotates in the direction in which the sheet 401 is wound around the roller 402, and the roller 402 rotates in the direction in which the sheet 401 is fed from the roller 402. In some cases, it is wound around a coaxial roller 407.

  The distal end portion of the string portion 408 is connected to the distal end portion of the inspection door 2. The front end portion of the inspection door 2 is a portion of the inspection door 2 that is farthest from the rotation shaft 3, and is a portion that becomes the lower end when the position of the inspection door 2 is the door opening position.

  The magnitude of the urging force of the spring of the roller support member 403 is such that the inspection door 2 can be easily displaced from the closed position to the open position, and the inspection door 2 is displaced from the open position to the closed position. The size is such that the coaxial roller 407 can wind the string portion 408. In other words, the spring biasing force of the roller support member 403 is such that the inspection door 2 can be easily displaced between the closing position and the opening position, and the closing position of the inspection door 2 is In association with the displacement between the door opening position and the door opening position, the seat 401 is large enough to be displaced between the extended position and the storage position.

  Next, a procedure for opening the inspection port 11 and performing work behind the ceiling 1 will be described. First, the operator displaces the inspection door 2 from the closed position to the opened position (door opening process). When the inspection door 2 is displaced from the closed position to the open position, the leading end of the string portion 408 is pulled downward. Thereby, the string part 408 is sent out from the coaxial roller 407, and the coaxial roller 407 rotates. At this time, the rotation direction of the coaxial roller 407 is a direction in which the string portion 408 is sent out from the coaxial roller 407, so the roller 402 rotates in a direction in which the sheet 401 is wound around the roller 402. As a result, the sheet 401 is displaced from the protruding position to the storage position (storage process).

  In synchronization with the displacement of the sheet 401 from the protruding position to the storage position, the foreign substance 5 placed on the upper surface of the sheet 401 is put into the foreign substance containing box 405.

  When the work on the back of the ceiling 1 is completed, the operator displaces the inspection door 2 from the open position to the closed position (door closing process). When the inspection door 2 is displaced from the opening position to the closing position, the downward pulling force of the string portion 408 is eliminated. Thereby, the string portion 408 is wound around the coaxial roller 407, and the coaxial roller 407 rotates. At this time, the rotation direction of the coaxial roller 407 is a direction in which the string portion 408 is wound around the coaxial roller 407, so that the roller 402 rotates in a direction in which the sheet 401 is sent out from the roller 402. As a result, the sheet 401 is displaced from the storage position to the overhanging position (an overhanging process). Thus, the procedure for opening the inspection port 11 and performing work behind the ceiling 1 is completed.

  As described above, according to the inspection door cover device 4B according to the second embodiment of the present invention, the inspection door cover device 4B further includes the displacement device 406 that displaces the seat 401 in conjunction with the displacement of the inspection door 2. However, the seat 401 can be displaced between the extended position and the storage position by displacing the inspection door 2 between the closed position and the open position. Thereby, the working efficiency in the back of the ceiling 1 can be improved.

Embodiment 3 FIG.
7 is a side view showing an inspection door cover device according to Embodiment 3 of the present invention, and FIG. 8 is a side view showing another state of the inspection door cover device of FIG. The inspection door cover device 4C includes a foldable sheet 410, a sheet support member 411 that supports one end of the sheet 410, a string part 412 to which the other end of the sheet 410 is connected, and one end of the string part 412. The wound string roller 413, a pair of roller support members 414 that rotatably support the string roller 413, the string roller 415 around which the other end of the string part 412 is wound, and the string roller 415 are rotated. A pair of roller support members 416 that can be supported and a displacement device 417 that displaces the sheet 410 in conjunction with the displacement of the inspection door 2 are provided.

  The string portion 412 is wound around the string roller 413 or sent out from the string roller 413 as the string roller 413 rotates. The string portion 412 is wound around the string roller 415 or sent out from the string roller 415 when the string roller 415 rotates. Specifically, the string portion 412 is wound around the string roller 415 when fed from the string roller 413, and is wound around the string roller 413 when fed from the string roller 415.

  Since the sheet 410 has the other end of the sheet 410 connected to the string part 412, the string part 412 is wound around the string roller 415, or the string part 412 is wound around the string roller 413. As a result, both ends of the sheet 410 approach each other and both ends of the sheet 410 move away. The sheet 410 is folded when both ends of the sheet 410 approach each other. In this case, the position of the sheet 410 is the storage position. On the other hand, the sheet 410 is stretched when both ends of the sheet 410 are separated. In this case, the position of the sheet 410 is an overhang position. Therefore, the sheet 410 is displaced between the protruding position and the storage position by the string portion 412 being wound around the string roller 415 or the string portion 412 being wound around the string roller 413. Specifically, the sheet 410 is displaced from the storage position to the extended position when the string portion 412 is wound around the string roller 415, and the extended position when the string portion 412 is wound around the string roller 413. To the storage position.

  The pair of roller support members 414 stands on the upper surface of the ceiling 1. The pair of roller support members 414 have bearings (not shown) and rotatably support both ends of the string roller 413 using the bearings. 7 and 8, the roller support member 414 on the near side of the pair of roller support members 414 is omitted.

  The pair of roller support members 416 is erected on the upper surface of the ceiling 1. The pair of roller support members 416 have bearings (not shown), and both ends of the string roller 415 are rotatably supported using the bearings. 7 and 8, the roller support member 416 on the near side in the pair of roller support members 416 is omitted. Further, the pair of roller support members 416 includes springs (not shown) that urge the string rollers 415 in the direction in which the string portions 412 are wound around the string rollers 415. Therefore, the sheet 410 is displaced from the extended position to the stored position by pulling the string portion 412 in the direction in which the sheet 410 is displaced from the extended position to the stored position against the biasing force of the spring of the roller support member 416. Further, when the tension force applied to the string portion 412 in the direction in which the sheet 410 is displaced from the tension position to the storage position is released, the sheet 410 is displaced from the storage position to the extended position by the biasing force of the spring of the roller support member 416. .

  The displacement device 417 is provided on the ceiling 1 with a coaxial roller 418 formed integrally with the string roller 413, a string part 419 with a proximal end wound around the coaxial roller 418 and a distal end connected to the inspection door 2. And a deflecting roller 420 around which a string portion 419 is wound.

  The coaxial roller 418 is disposed such that the axis of the coaxial roller 418 is disposed on the same straight line as the string roller 413. The coaxial roller 418 rotates in the same direction as the rotation direction of the string roller 413 when the string roller 413 rotates.

  The string portion 419 is wound around the coaxial roller 418 or sent out from the coaxial roller 418 when the coaxial roller 418 rotates. Specifically, the string portion 419 is fed from the coaxial roller 418 when the string roller 413 rotates in the direction in which the string portion 412 is wound around the string roller 413, and the string portion 412 is fed from the string roller 413. When the string roller 413 rotates in the direction to be wound, it is wound around the coaxial roller 418. The distal end portion of the string portion 419 is connected to the distal end portion of the inspection door 2.

  The magnitude of the urging force of the spring of the roller support member 416 is such that the inspection door 2 can be easily displaced from the closed position to the open position, and the inspection door 2 is displaced from the open position to the closed position. The size is such that the coaxial roller 418 can wind up the string portion 419. That is, the magnitude of the biasing force of the spring of the roller support member 416 is such that the inspection door 2 can be easily displaced between the closed position and the open position, and the closed position of the inspection door 2. The size of the seat 410 is such that the seat 410 can be displaced between the extended position and the storage position in conjunction with the displacement between the opening position and the door opening position.

  The sheet 410 is an adhesive sheet with an adhesive material applied to the upper surface. Thereby, the foreign material 5 placed on the upper surface of the sheet 410 is fixed to the sheet 410. Other configurations are the same as those of the second embodiment.

  Next, a procedure for opening the inspection port 11 and performing work behind the ceiling 1 will be described. First, the operator displaces the inspection door 2 from the closed position to the opened position (door opening process). When the inspection door 2 is displaced from the closed position to the open position, the leading end of the string portion 419 is pulled downward. Thereby, the string part 419 is sent out from the coaxial roller 418, and the coaxial roller 418 rotates. Since the rotation direction of the coaxial roller 418 at this time is a direction in which the string portion 419 is sent out from the coaxial roller 418, the string roller 413 rotates in a direction in which the string portion 412 is wound around the string roller 413. As a result, the sheet 410 is displaced from the protruding position to the storage position (storage process).

  When the work on the back of the ceiling 1 is completed, the operator displaces the inspection door 2 from the open position to the closed position (door closing process). When the inspection door 2 is displaced from the opening position to the closing position, the downward pulling force of the string portion 419 is eliminated. Thereby, the string portion 419 is wound around the coaxial roller 418, and the coaxial roller 418 rotates. Since the rotation direction of the coaxial roller 418 at this time is a direction in which the string portion 419 is wound around the coaxial roller 418, the string roller 413 rotates in a direction in which the string portion 412 is sent out from the string roller 413. As a result, the sheet 410 is displaced from the storage position to the overhanging position (an overhanging process). Thus, the procedure for opening the inspection port 11 and performing work behind the ceiling 1 is completed.

  As described above, according to the inspection door cover apparatus 4C according to the third embodiment of the present invention, the sheet 410 is displaced from the extended position to the stored position by being folded, so that the sheet 410 is placed on the upper surface of the sheet 410. The foreign matter 5 can be easily collected by the displacement of the sheet 410 from the protruding position to the storage position.

  In the third embodiment, the configuration in which the sheet 410 is displaced from the extended position to the storage position by being folded has been described. However, the sheet 410 is displaced between the extended position and the storage position by expanding and contracting. It may be a configuration.

  Moreover, in the said Embodiment 3, although the sheet | seat 410 demonstrated the structure which is an adhesive sheet, the sheet | seat 410 may not be an adhesive sheet.

  Moreover, although each said embodiment demonstrated the structure by which nothing is arrange | positioned on the upper surface of the inspection door 2, you may provide an adhesive sheet in the upper surface of the inspection door 2. FIG. Thereby, when the inspection door 2 is displaced from the closed position to the open position, it is possible to more reliably suppress the foreign matter 5 from dropping from the upper surface of the inspection door 2 to the indoor floor. Moreover, the adhesive sheet provided on the upper surface of the inspection door 2 may be a laminate of a plurality of sheets. Thereby, a new adhesive sheet can be exposed by turning off the uppermost adhesive sheet among a plurality of adhesive sheets, and more foreign substances 5 can be adhered.

  DESCRIPTION OF SYMBOLS 1 Ceiling, 2 Inspection door, 3 Rotating shaft, 4A, 4B, 4C Inspection door cover device, 5 Foreign material, 11 Inspection port, 401 Sheet, 402 Roller, 403 Roller support member, 404 Sheet support member, 405 Foreign material box, 406 Displacement device, 407 Coaxial roller, 408 String portion, 409 Deflection roller, 410 sheet, 411 sheet support member, 412 string portion, 413 string roller, 414 roller support member, 415 string roller, 416 roller support member, 417 displacement Device, 418 coaxial roller, 419 string, 420 deflecting roller.

Claims (6)

Covering the inspection door from above when the inspection door that is displaced between the closing position that closes the inspection opening formed on the ceiling and the opening position that extends downward from the ceiling and that opens the inspection opening is in the closing position. An inspection door cover device,
A sheet that is displaced between an overhanging position that covers the inspection door from above and a storage position at which the upper surface of the inspection door is exposed by being deformed ;
An inspection door cover device comprising: a displacement device that displaces the seat in conjunction with displacement of the inspection door. Covering the inspection door from above when the inspection door that is displaced between the closing position that closes the inspection opening formed on the ceiling and the opening position that extends downward from the ceiling and that opens the inspection opening is in the closing position. An inspection door cover device,
A sheet that is displaced between an overhanging position that covers the inspection door from above and a storage position at which the upper surface of the inspection door is exposed by being deformed ;
A roller around which the sheet is wound ,
The inspection door cover , wherein the sheet is displaced from the extended position to the storage position by being wound around the roller, and is displaced from the storage position to the extended position by being fed from the roller. apparatus. A roller on which the sheet is wound;
The sheet according to claim 1, characterized in that the winding by being taken roller displaced to the housed position from the protruding position, displaced to the protruding position from the storage position by being fed from the roller The inspection door cover device described in 1. Further comprising a foreign material box provided adjacent to the roller,
4. The foreign matter container according to claim 2 , wherein the foreign matter placed on the upper surface of the sheet is placed in the foreign matter box when the sheet is displaced from the extended position to the storage position. The inspection door cover device described. The inspection door cover device according to claim 1 , wherein the seat is displaced from the extended position to the storage position by being folded. The inspection door cover device according to claim 1 , wherein the seat is displaced between the extended position and the storage position by expanding and contracting.

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