JP2017036628A - Split door structure - Google Patents

Abstract

The present invention provides a split door structure that reduces fluctuations in driving load when raising and lowering a door and enables smooth raising and lowering operation with a small driving torque. A pair of upper and lower pulleys 7 attached to the left and right frame bodies 2, a first rope 8 wound around the pair of upper and lower pulleys 7, and fixed to the first rope 8, A first door 3 that can be raised and lowered along the first guide member 10 by rotation of the pulley 7 and a second door that is arranged so as to overlap the first door 3 and can be raised and lowered along the second guide member 11. A body 4, a second rope 9 having one end fixed to the frame body 2 and the other end fixed to the first door body 3, and being supported by the second rope 9 and fixed to the second door body 4. And a drive unit 16 that drives at least one of the pair of upper and lower pulleys 7. [Selection] Figure 4

Description

  The present invention relates to a door provided at a doorway or a passage of a building or the like, and more particularly to a split door structure in which an open / closed state is switched by interlocking up and down of a door divided into a plurality of parts in the vertical direction.

  Patent Document 1 is composed of a storage unit provided at the top of the home and a plurality of upper and lower doors that are slid and stacked on the storage unit. There is disclosed a guard fence in a platform in which a stopper that can be engaged with the lower end of the upper door when it is raised is attached to the tip, and each door is moved up and down by driving the lower door.

  Normally, the upper and lower multi-stage doors are lowered and the platform entry / exit side end of the platform is closed, and after the train entry stops, each of the upper and lower multi-stage doors is raised and stored in the storage box. As a result, the platform entry / exit side of the platform is opened.

  A stopper that can be engaged with the lower end of the upper door is attached to the tip of the lower door, and each door is moved up and down by driving the lower door. When the door is raised, the stopper attached to the tip of the door engages with the lower end of the upper door, and the upper door is pulled up at the same time, and both are stored in the storage box.

  Patent Document 2 discloses a gate device in which a restriction member that blocks a passage is vertically moved up and down between a lowered position that prevents passage of the passage and an elevated position that does not prevent passage of the passage. A guide member is provided for guiding the left and right end portions up and down, and a transmission gear is arranged above each guide member, and a long connection support made of a chain or a toothed belt is arranged. The control member is connected to one end side of the support body, a balance weight is provided to the other end side of each connection support body, and drive means for driving the left and right transmission gears in conjunction with each other is provided, and the drive means There is disclosed a gate device characterized in that a control means for controlling the operation is provided.

  Here, the restriction member is constituted by a plurality of divided members, and the lower divided member is engaged with the upper divided member and integrated with each other at a position where the lower divided member rises and overlaps with the upper divided member. One provided with a piece is considered preferable.

  As an effect, the regulating member is composed of a plurality of divided members, and the lower divided member is engaged with the upper divided member at the position where the lower divided member is raised and overlaps with the upper divided member, and integrated with each other. Since the locking piece is provided, in a closed state, an entry restriction effect of a certain height can be obtained by a plurality of divided members, and at the same time, it is integrated in an overlapped state in the raised open state. It is mentioned that the restricting member can be retracted and can be installed even in a passage where there is no space above.

Utility Model Registration No. 2593605 JP 2006-266014 A

  However, in the guard fence disclosed in Patent Document 1, when the lowermost door is raised, the stopper attached to the tip of the guard fence engages with the lower end of the upper door, and the upper door is simultaneously lifted. Since both are stored in the storage box, the load on the upper door is added as the drive load at the moment when the stopper is engaged with the lower end of the upper door, and the drive load fluctuates greatly. There was a problem.

  Also, the gate device disclosed in Patent Document 2 is configured such that the restriction member is composed of a plurality of divided members, and the lower divided member rises and overlaps the upper divided member at the upper divided member. Since the locking pieces that are engaged and integrated with each other are provided, the driving load applied to the driving means becomes discontinuously large when the lower divided member is raised and engaged with the upper divided member. was there.

  That is, in the above-described guard fence and gate device, the driving load varies discontinuously and greatly during the rising phase of the door or the regulating member, so that it is difficult to realize a smooth rising operation, and it occurs instantaneously. There is a problem in that it is necessary to prepare driving means having a driving torque larger than necessary in order to cope with fluctuations in driving load.

  In view of the above-described conventional problems, an object of the present invention is to provide a split door structure that can reduce a variation in driving load when the door is raised and lowered, and can perform a smooth raising and lowering operation with a small driving torque.

  In order to achieve the above-described object, the first characteristic configuration of the divided door structure according to the present invention is a pair of upper and lower pulleys attached to the left and right frame bodies as described in claim 1 of the claims. A first rope wound around the pair of upper and lower pulleys, a first door body fixed to the first rope and freely movable up and down along the first guide member by the rotation of the pulley, A second door body arranged so as to be superimposed on one door body and freely movable up and down along the second guide member, and a second strip having one end fixed to the frame body and the other end fixed to the first door body. And a pulley supported by the second rope and fixed to the second door body, and a drive unit that drives at least one of the pair of upper and lower pulleys.

  The 1st door body fixed to the 1st rope wound by the pulley raises / lowers by rotation of the pulley which a drive part drives. Then, the other end of the second rope, which supports the pulley fixed to the second door body, has one end fixed to the frame body and the other end fixed to the first door body, moves up and down as the first door body moves up and down. Therefore, the second door body moves up and down following the first door body.

  Therefore, there is no discontinuous movement between the first door body and the second door body when the door is raised and lowered, and the fluctuation of the driving load when the door is raised and lowered is small. Therefore, the door can be smoothly lifted and lowered with a small driving torque.

  The second door arranged so as to be superimposed on the first door is driven and raised when the first door is raised, and is driven and lowered when the first door is lowered. The closed state can be realized either above or below by the one door body and the second door body.

  Since the pulley fixed to the second door body functions as a moving pulley, the movement distance of the second door body during ascending / descending is ½ of the movement distance of the first door body. Therefore, by adjusting the vertical width of the first door body and the second door body, the overlap between the first door body and the second door body can be reduced in the closed state.

  As described in claim 2, the second characteristic configuration is that, in addition to the first characteristic configuration described above, a balance weight is fixed to the first rope.

  Since the balance weight is provided so as to balance the first door body fixed to the first rope and the second door body driven by the first door body, the drive torque required for the drive unit can be reduced, The door can be easily lifted and lowered even with a heavy door.

  In the third characteristic configuration, as described in the third aspect, in addition to the second characteristic configuration described above, the balance weight is 1/2 of the weight of the first door body and the second door body. The weight is set by adding the weight.

  Since the pulley fixed to the second door body functions as a moving pulley, the second cable is supported by the pulley fixed to the second door body, one end is fixed to the frame body, and the other end is fixed to the first door body. The other end of the strip is half the weight of the second door body. And since the 1st door body to which the other end of the 2nd strand was fixed is being fixed to the 1st rope, the weight of the 1st door body and the weight of 1/2 of the 2nd door body are added. Takes a heavy weight. Therefore, by setting the balance weight to a weight obtained by adding the weight of the first door body and the half of the second door body, the balance weight is fixed to the first rope and the first door body and the second door body. The drive torque required for the drive unit can be reduced by balancing with the second door body that follows the one door body.

  In the fourth feature configuration, as described in claim 4, in addition to any of the first to third feature configurations described above, when the second door body is moved up and down, the pulley moves the second strip. The pulley is fixed to the side portion of the angle steel protruding below the side portion of the second door body so as to be positioned below the fixed position to the frame body and the fixed position to the first door body. There is in point.

  Easy adjustment of the position of the second door body for setting the upper end or the lower end of the second door body at a predetermined position in the open state and setting the overlap between the first door body and the second door body small in the closed state Become.

  In the fifth feature configuration, in addition to any of the first to fourth feature configurations described above, the first door body and the second door body have vertical widths as described in claim 5. It is in the point where it is constituted to the same size.

  In the closed state, the first door body and the second door body can efficiently form a wide closed surface, and the storage space for the first door body and the second door body can be reduced.

  In the sixth feature configuration, in addition to any one of the first to fifth feature configurations described above, the first door body and the second door body are in an open state. The upper end and / or the lower end are configured to be flush with each other.

  The storage space for the first door body and the second door body can be reduced.

  In the seventh feature configuration, in addition to any one of the first to sixth feature configurations described above, the second door body may be connected to the first door body in an open position. Overlapping and moving up and down following the first door body at a movement speed of ½ of the movement speed of the first door body so that the relative position with the first door body is displaced in the vertical direction at the closed position. The point is that it is configured to do.

  Since the second door body is moved up and down following the first door body at a moving speed that is 1/2 of the moving speed of the first door body, the second door body is a discontinuous independent of the first door body. There is no movement. For this reason, the driving load is stabilized without increasing or decreasing discontinuously, so that the driving torque of the driving unit can be reduced.

  In the eighth feature configuration, in addition to any one of the first to seventh feature configurations described above, the drive unit may include a shaft rotatably supported by the frame body. And a driving machine that drives the shaft via a speed reduction mechanism, and a driving pulley is fitted and fixed to the shaft of the pair of upper and lower pulleys.

  Since the driving pulley is fitted and fixed to the shaft, the left and right driving pulleys attached to the left and right frames are linked via the shaft. Then, the left and right drive pulleys wind the left and right first ropes and move the first door body fixed to the left and right first ropes up and down. Therefore, the load applied to the left and right drive pulleys is uniform, and the drive torque of the drive machine that drives the shaft via the speed reduction mechanism can be reduced.

  The ninth feature configuration is based on an encoder for detecting the rotational speed of the shaft or the drive unit and an output signal of the encoder, in addition to the eighth feature configuration described above, as described in claim 9. And an elevating control unit configured to elevate and lower the first door body between the open position and the closed position, and the elevating control unit is configured to control the first door body or the second door body based on an output signal of the encoder. When the load fluctuation is detected, the driving machine is stopped.

  It is possible to accurately control the position of the first door body, and it is also possible to detect a load variation caused by a person or an object coming into contact with the first door body or the second door body. Therefore, when the load change is detected, the driving machine is stopped immediately, so that the lifting and lowering operations of the first door body and the second door body can be stopped, and safety is improved.

  In the tenth feature configuration, in addition to any one of the first to ninth feature configurations described above, the tenth feature configuration is spaced apart from the first door body in the vertical direction by a predetermined distance. A third door body fixed to the first rope and movable up and down along the first guide member by rotation of the pulley, and disposed so as to overlap the third door body is different from the first guide member. A fourth door body that is movable up and down along the guide member; a third rope having one end fixed to the frame body and the other end fixed to the third door body; and the third rope supported by the third rope. And a second pulley fixed to the four-door body.

  When the lower part of the storage part of the first door body to the fourth door body is closed by the first door body and the second door body, the third door body and the fourth door body are stored in an overlapping manner. The upper part of the storage part can be opened. On the other hand, when the first door body and the second door body are overlapped and stored in the storage portion, and the lower portion of the storage portion is in the open state, the third door body and the fourth door body are located above the storage portion. And can be closed. In other words, it is possible to switch the upper and lower open / closed states of the storage unit in conjunction with each other.

  The eleventh characteristic configuration is arranged so as to overlap the second door body in addition to the first or second characteristic configuration described above, as described in claim 11 and along the third guide member. A fifth door body that can be moved up and down, a fourth rope having one end fixed to the frame body and the other end fixed to the second door body, and supported by the fourth rope to the fifth door body. And a fixed third pulley.

  It is comprised by three door bodies, a 1st door body, a 2nd door body, and a 5th door body. Since the third pulley fixed to the fifth door body functions as a moving pulley, the fifth door body is moved up and down following the second door body at a moving speed that is ½ of the moving speed of the second door body. The moving distance of the fifth door body is ½ of the moving distance of the second door body. Therefore, by setting the vertical width of the second door body and the fifth door body to ½ of the vertical width of the first door body, the first door body, the second door body, and the fifth door body in the closed state. Thus, a wide closed surface can be formed efficiently.

  Further, the balance weight is set to a weight obtained by adding the weight of the first door body, the weight of 1/2 of the second door body, and the weight of 1/4 of the fifth door body, so that the balance weight becomes the first door. The body, the second door body, and the fifth door body are balanced, and the drive torque required for the drive unit can be reduced.

  As described above, according to the present invention, it is possible to provide a divided door structure that can reduce the fluctuation of the driving load when the door is raised and lowered, and can perform a smooth raising and lowering operation with a small driving torque.

(A) is the front view of the open state of the lower opening division door structure by this invention, (b) is the side view of the open state of the same lower opening division door structure (A) is the front view of the closed state of the lower opening divided door structure by this invention, (b) is the side view of the closed state of the lower opening divided door structure Plan view of split door structure according to the present invention (A) is the side view which showed typically the open state of the lower opening division | segmentation door structure by this invention, (b) is the side view which showed typically the intermediate state of the lower opening division | segmentation door structure, (c) is Side view schematically showing the closed state of the lower opening split door structure (A) is the front view of the open state of the upper opening division | segmentation door structure by this invention, (b) is the side view of the open state of the opening division | segmentation door structure same as the above. (A) is the front view of the obstruction | occlusion state of the upper opening division | segmentation door structure by this invention, (b) is the side view of the obstruction | occlusion state of the opening division | segmentation door structure same as the above. (A) is a side view schematically showing the open state of the upper opening divided door structure according to the present invention, (b) is a side view schematically showing an intermediate state of the upper opening divided door structure, and (c) is the same as above. Side view schematically showing the closed state of the divided door structure Is a side view schematically showing a split door structure with two openings according to the present invention. (A) is the side view which showed typically the open state of the lower opening division | segmentation door structure comprised by the divided door of 3 division | segmentation by this invention, (b) is the intermediate state of the lower opening division | segmentation door structure typically Side view shown, (c) is a side view schematically showing the closed state of the lower opening divided door structure

Below, an example of the divided door structure which comprises this invention is demonstrated based on drawing.
As shown in FIGS. 1 (a) and 1 (b), the lower opening divided door structure 1b has a frame body 2 on the left and right sides, and a first door body 3 and a second door on the upper side sandwiched between the frame bodies 2. There is a storage portion 5 in which the door body 4 is stored, and the lower side is opened in a rectangular shape. In the open state, the first door body 3 and the second door body 4 are stored in the storage portion 5 so as to overlap each other. The vertical width of the opening 6 on the lower side is slightly smaller than the vertical width of the first door 3 plus the vertical width of the second door 4, and the horizontal width of the opening 6 on the lower side. Is slightly smaller than the left and right widths of the first door body 3 and the second door body 4.

  A pair of upper and lower pulleys 7 are attached to the left and right frame bodies 2, respectively. A first rope 8 is wound around the pair of upper and lower pulleys 7. In addition, as the 1st rope 8, a belt or a toothed belt can be used. A drive unit 16 (not shown) for driving the pair of upper and lower pulleys 7 is provided, details of which will be described later.

  In addition, a first guide member 10 (not shown) is arranged in the vertical direction on the left and right frame bodies 2 so that the first door body 3 can freely move up and down along the first guide member 10. ing. Similarly, a second guide member 11 (not shown) is vertically arranged on the left and right frame bodies 2 so that the second door body 4 can freely move up and down along the second guide member 11. It has become.

  The 1st door body 3 is a metal rectangular flat plate shape, and is arrange | positioned so that a plane may follow an up-down direction. A fixing plate 12 for fixing the first rope 8 is provided above the left and right side surfaces of the first door body 3.

  When the first rope 8 fixed to the fixing plate 12 of the first door body 3 is wound by the rotation of the pulley 7, the first door body 3 can freely move up and down along the first guide member 10. It can be done. That is, the first door 3 is movable from the upper storage portion 5 to the lower end of the lower opening 6.

  The second door body 4 is made of metal and has substantially the same shape as the first door body 3 in the same vertical size. Similar to the first door body 3, the second door body 4 is disposed so that the plane is along the vertical direction, and is stored in the storage unit 5 so as to overlap the first door body 3 in the open state. . And the 1st door body 3 and the 2nd door body 4 are comprised so that a lower end may become flush | planar in an open state.

  Angle irons 13 are provided on the left and right sides of the second door body 4 so as to protrude downward on the side, and pulleys 14 are fixed to the sides of the angle iron 13. The second strip 9 is wound around the pulley 14 so as to support the pulley 14. One end of the second strip 9 is fixed to the frame body 2, and the other end is fixed to the fixing plate 12 of the first door body 3. When the second door body 4 is moved up and down, the pulley 14 is positioned below the fixed position of the second rope 9 to the frame body 2 and the fixed position to the first door body 3.

  When the other end of the second rope 9 fixed to the fixing plate 12 of the first door body 3 moves up and down as the first door body 3 moves up and down, the pulley 14 supported by the second rope 9 is attached. The second door body 4 moves up and down following the first door body 3. Since the pulley 14 supported by the second rope 9 functions as a moving pulley, the movement distance of the second door body 4 is ½ of the movement distance of the first door body 3.

  A balance weight 15 is fixed to the first rope 8. The balance weight 15 fixed to the first rope 8 and the first door body 3 and the second door body 4 driven by the first door body 3 are also fixed to the first rope 8 and the upper pulley 7a. It comes to balance through. That is, the balance weight 15 is set to a weight obtained by adding the weight of the first door body 3 and the half of the weight of the second door body 4.

  As shown in FIGS. 2A and 2B, in the closed state of the lower opening divided door structure 1 b, the first door body 3 has the lower end of the first door body 3 slightly below the lower end of the opening 6. Is going down. Since the moving distance of the second door body 4 is ½ of the moving distance of the first door body 3, the lower end of the second door body 4 and the upper end of the first door body 3 are slightly at the center of the opening 6. The 2nd door body 4 is falling so that it may overlap. The entire surface of the opening 6 is closed by the first door body 3 and the second door body 4.

  As shown in FIGS. 5A and 5B, in the upper opening divided door structure 1a, the first door body 3 and the second door body 4 are stored on the lower side sandwiched between the frame bodies 2. It differs from the above-described lower opening divided door structure 1b in that there is a portion 5 and the upper side is opened in a rectangular shape. And the 1st door body 3 and the 2nd door body 4 are comprised so that an upper end may become flush | planar in an open state.

  When the storage part 5 is arranged on the lower side, the space below the second door body 4 is reduced in the open state, so that the angle steel provided to protrude below the left and right side parts of the second door body 4 The pulley 14 is fixed to the side part of the angle steel 13 after making the 13 protrusion part 13a small. Further, the fixing plate 12 of the first door body 3 that fixes the first rope 8 and the second rope 9 is provided at the center of the side surface rather than above the left and right side surfaces of the first door body 3. However, like the lower opening divided door structure 1b, the pulley 14 is positioned below the position where the second rope 9 is fixed to the frame body 2 and the position where the second rope 9 is fixed to the first door body 3 when the second door body 4 is raised and lowered. It is supposed to be located.

  As shown in FIGS. 6A and 6B, the first door body 3 is positioned above the second door body 4 in the closed state of the upper opening divided door structure 1a. Then, the first door body 3 and the second door body 4 are the entire surface of the opening 6 so that the lower end of the first door body 3 and the upper end of the second door body 4 slightly overlap at the center of the opening 6. Occlude.

As shown in FIG. 3, the upper shaft 17 a is rotatably supported by bearings 18 fixed to the left and right frame bodies 2. The upper pulley 7a is fitted and fixed to the upper shaft 17a in the vicinity of both left and right ends. A driven gear 19 is fitted and fixed to the upper shaft 17a. There is a drive unit 16 including a motor 22 as a drive machine 22, and a drive gear 20 is fitted and fixed to the motor 22 on a rotating shaft. The reduction gear 21 is configured by meshing the driven gear 19 having a large number of teeth with the driving gear 20 having a small number of teeth.
The upper shaft 17 a and the upper pulley 7 a fitted and fixed to the upper shaft 17 a are rotated by the rotation drive of the motor 22 through the speed reduction mechanism 21. That is, the upper pulley 7a functions as the driving pulley 7. The driving load applied to the motor 22 or the driving torque required for the motor 22 can be changed by changing the ratio (reduction ratio) between the number of teeth of the driven gear 19 and the number of teeth of the driving gear 20.

  Since the left and right upper pulleys 7a are fitted and fixed to the upper shaft 17a, they rotate together with the upper shaft 17a. Then, the left and right upper pulleys 7a wind the left and right first ropes 8 and move the first door body 3 fixed to the left and right first ropes 8 up and down. Therefore, the load applied to the left and right upper pulleys 7 a is equalized, and the driving torque of the driving machine 22 that drives the shaft 17 via the speed reduction mechanism 21 can be reduced.

  The lower pulley 7b (not shown) that is not the driving pulley 7 is not necessarily provided with the lower shaft 17b (not shown). You may make it attach to. Even when the lower shaft 17b is provided, the lower pulley 7b and the lower shaft 17b do not necessarily rotate integrally, and the lower pulley 7b does not have to be fitted and fixed to the lower shaft 17b. .

  Note that the upper shaft 17a and the upper pulley 7a fitted and fixed to the upper shaft 17a have been described as rotating by the rotational drive of the motor 22 via the speed reduction mechanism 21, but the present invention is not limited to this. The lower pulley 7 b fitted and fixed to the lower shaft 17 b and the lower shaft 17 b may be configured to rotate by the rotational drive of the motor 22 via the speed reduction mechanism 21, or fitted and fixed to both the upper and lower shafts 17 and 17. The pulley 7 may be configured to rotate by the rotational drive of the motor 22 via the speed reduction mechanism 21.

  As shown in FIGS. 4A to 4C, in the lower opening divided door structure 1b, in the opened state, the second door body 4 overlaps with the first door body 3 in the opened position. In the intermediate state in which the first door body 3 and the second door body 4 are lowered, the second door body 4 is partially separated from the first door body 3 in the vertical direction, and descends with a delay from the first door body 3. Will come to do. When the closed state is reached, the second door body 4 is almost completely separated from the first door body 3 in the vertical direction at the closed position. That is, the 2nd door body 4 moves so that a relative position with the 1st door body 3 may be displaced to an up-down direction in the obstruction | occlusion position. The transition from the closed state to the open state is realized by a movement completely opposite to the above movement. When shifting from the open state to the closed state, or from the closed state to the open state, the second door body 4 is driven by the first door body 3 at a movement speed that is ½ of the movement speed of the first door body 3. Go up and down. Therefore, the 2nd door body 4 does not perform the discontinuous movement independent of the 1st door body 3, and the 1st door body 3 and the 2nd door body 4 perform smooth raising / lowering operation | movement. Furthermore, the drive load does not increase or decrease discontinuously, and therefore the drive torque of the drive unit 16 (not shown) need not be increased unnecessarily, and can be reduced.

  The first door 3 is moved up and down between an open position and a closed position based on an output signal of the encoder 23 and an encoder 23 (not shown) that detects the rotational speed of the shaft 17 or the drive machine 22 (not shown). A lifting control unit 24 (not shown) for controlling is provided. For example, in the intermediate state, when the first door body 3 and the second door body 4 are moving up and down, if a person or an object contacts the first door body 3 or the second door body 4, for safety It is necessary to stop the lifting operation immediately. Usually, in such a case, a discontinuous change occurs in the rotational speed of the shaft 17 or the driving machine 22. Since the encoder 23 constantly outputs information on the detected rotational speed to the lift control unit 24, the lift control unit 24 detects the first door 3 or the first door 3 from the discontinuous change in the rotational speed output by the encoder 23. It detects that the load fluctuation has occurred in the two-door body 4. And the raising / lowering control part 24 stops the drive machine 22 for safety | security, and stops the raising / lowering operation | movement of the 2nd door body 4 which follows the 1st door body 3 and the 1st door body 3. FIG.

  As shown in FIGS. 7A to 7C, in the upper opening divided door structure 1 a, the second door body 4 overlaps with the first door body 3 in the open position in the open state, and the first door body 3. In the intermediate state in which the second door body 4 starts to rise, the second door body 4 is partially separated from the first door body 3 in the vertical direction, and rises behind the first door body 3. When the closed state is reached, the second door body 4 is almost completely separated from the first door body 3 in the vertical direction at the closed position. That is, the 2nd door body 4 moves so that a relative position with the 1st door body 3 may be displaced to an up-down direction in the obstruction | occlusion position. The transition from the closed state to the open state is realized by a movement completely opposite to the above movement. Even in the upper opening divided door structure 1a, the second door body 4 moves at a movement speed that is ½ of the movement speed of the first door body 3 when shifting from the open state to the closed state or from the closed state to the open state. The first door body 3 is moved up and down. Therefore, the 2nd door body 4 does not carry out the discontinuous movement independent of the 1st door body 3, and a drive load does not increase / decrease discontinuously. Therefore, the drive torque of the drive unit 16 (not shown) does not need to be increased unnecessarily and can be reduced.

Hereinafter, another embodiment of the present invention will be described.
As shown in FIG. 8, as another embodiment, the third door body 25 and the third door body 25 having a common storage portion 5 in the lower opening divided door structure 1 b provided with the first door body 3 and the second door body 4 described above. There is a divided door structure in which an upper opening divided door structure 1 a provided with a four-door body 26 is further added. In the divided door structure, there is a common storage portion 5 that stores the first door body 3 to the fourth door body 26, and an upper opening 6 a and a lower opening 6 b are respectively provided above and below the storage portion 5. is there.

  The third door body 25 is located above the first door body 3 and is fixed to the first rope 8 in the same manner as the first door body 3. Therefore, the third door body 25 can freely move up and down along the first guide member 10 (not shown) by the rotation of the pulley 7 as in the first door body 3.

  A second pulley 28 is fixed to the fourth door body 26, and the second pulley 28 has a third rope 27 having one end fixed to the frame body 2 and the other end fixed to the third door body 25. It is supported. For this reason, the fourth door body 26 is disposed so as to overlap the third door body 25 in the state of being housed in the housing portion 5, but when the third door body 25 is moved up and down, the fourth door body 26 acts as a guide member. It is designed to move up and down along. The guide member may be shared with the second door body 4 using a second guide member 11 (not shown), or a new guide member may be provided.

  The third door body 25 is fixed to the first rope 8 above the first door body 3 with a predetermined distance from the first door body 3, and therefore the first door body 3 and the second door body. When 4 closes the lower opening 6b, the third door body 25 and the fourth door body 26 open the upper opening 6a, and the first door body 3 and the second door body 4 open the lower opening. When the part 6b is opened, the third door body 25 and the fourth door body 26 are configured to close the upper opening 6a.

  The third door body 25 is fixed to the first rope 8 on the opposite side of the first door body 3 with the pulley 7 interposed therebetween, and the first door body 3 and the second door body 4 are overlapped with each other to store the housing 5. At the same time, the third door body 25 and the fourth door body 26 may be overlapped and stored in the storage portion 5 at the same time. In this configuration, the upper opening 6a and the lower opening 6b can be simultaneously opened or closed, and the balance weight 15 is unnecessary.

  As shown in FIG. 9, as another embodiment, the lower door divided door structure 1 b provided with the first door body 3 and the second door body 4 described above further includes a fifth door body 29. A third pulley 31 is fixed to the fifth door body 29, and the third pulley 31 is supported by a fourth rope 30 having one end fixed to the frame body 2 and the other end fixed to the second door body 4. Has been. And the 5th door body 29 can raise / lower freely along a 3rd guide member (not shown).

  In the open state, the fifth door body 29 is housed in the housing portion 5 and is disposed so as to overlap the first door body 3 and the second door body 4. When the first door body 3 starts to descend, the second door body 4 starts to descend following the first door body 3, and further the fifth door body 29 descends following the second door body 4. It has become. When the first door body 3 reaches the closed position, the first door body 3, the second door body 4, and the fifth door body 29 enter a closed state in which the lower opening 6b is closed. In addition, the reverse operation enables the transition from the closed state to the open state.

  The moving speed of the second door body 4 is ½ of the moving speed of the first door body 3, and the moving speed of the fifth door body 29 is ½ of the moving speed of the second door body 4. The moving speed of the fifth door body 29 is ¼ of the moving speed of the first door body 3. Similarly, the movement distance of the second door body 4 is ½ of the movement distance of the first door body 3, and the movement distance of the fifth door body 29 is ½ of the movement distance of the second door body 4. Therefore, the moving distance of the fifth door 29 is ¼ of the moving distance of the first door 3. Therefore, the closed state can be efficiently realized by setting the vertical width of the second door body 4 and the fifth door body 29 to ½ of the vertical width of the first door body 3.

  Further, the balance weight 15 is set to a weight obtained by adding the weight of the first door body 3, the weight of 1/2 of the second door body 4, and the weight of 1/4 of the fifth door body 29. The weight 15, the first door body 3, the second door body 4 and the fifth door body 29 driven by the first door body 3 are balanced through the upper pulley 7a.

  In addition, since the up-and-down width of the 2nd door body 4 and the 5th door body 29 can be set to 1/2 of the up-and-down width of the 1st door body 3, only the above-mentioned 1st door body 3 and the 2nd door body 4 are provided. In addition, it is possible to use a balance weight 15 that is lighter than the balance weight 15 used in the lower opening divided door structure 1b. Therefore, it is possible to move up and down with a smaller driving torque.

  Although the lower opening divided door structure 1b has been described, the same applies to the upper opening divided door structure 1a.

  In addition, not only the 1st rope 8, but the 2nd rope 9-the 4th rope 30 can use a belt or a toothed belt. Moreover, it is also possible to use a sprocket instead of the pulley 7, and in that case, a chain is used instead of a belt or a toothed belt.

  The divided door structure described above is only one embodiment of the present invention, and the scope of the present invention is not limited by the description, and the specific structure and shape of each part within the scope of the effects of the present invention. Needless to say, the size, material, and the like can be changed and designed as appropriate.

1a: Upper opening divided door structure 1b: Lower opening divided door structure 2: Frame body 3: First door body 4: Second door body 5: Storage portion 6: Opening portion 6a: Upper opening portion 6b: Lower opening portion 7: Pulley 7a: Upper pulley 7b: Lower pulley 8: First rope 9: Second rope 10: First guide member 11: Second guide member 12: Fixing plate 13: Angle steel 13a: Protrusion 14: Pulley 15: Balance weight 16: Drive unit 17: Shaft 17a: Upper shaft 17b: Lower shaft 18: Bearing 19: Driven gear 20: Drive gear 21: Reduction mechanism 22: Drive machine (motor)
23: Encoder 24: Lift control unit 25: Third door body 26: Fourth door body 27: Third rope 28: Second pulley 29: Fifth door 30: Fourth rope 31: Third pulley

Claims (11)

A pair of upper and lower pulleys attached to the left and right frames respectively;
A first rope wound around the pair of upper and lower pulleys;
A first door body fixed to the first rope and capable of moving up and down along the first guide member by rotation of the pulley;
A second door that is disposed so as to overlap the first door and is movable up and down along the second guide member;
A second rope having one end fixed to the frame and the other end fixed to the first door;
A pulley supported by the second rope and fixed to the second door body;
A drive unit for driving at least one of the pair of upper and lower pulleys;
Divided door structure.   The split door structure according to claim 1, wherein a balance weight is fixed to the first rope.   The split door structure according to claim 2, wherein the balance weight is set to a weight obtained by adding a weight of the first door body and a half of the weight of the second door body.   The side of the second door body is such that the pulley is positioned below the fixed position of the second rope to the frame body and the fixed position to the first door body when the second door body is raised and lowered. The split door structure according to any one of claims 1 to 3, wherein the pulley is fixed to a side portion of the angle steel protruding downward.   The split door structure according to any one of claims 1 to 4, wherein the first door body and the second door body are configured to have the same vertical width.   The divided door structure according to any one of claims 1 to 5, wherein the first door body and the second door body are configured such that an upper end and / or a lower end thereof are flush with each other in an open state.   The second door body overlaps with the first door body at the open position, and the moving speed of the first door body is 1 so that the relative position with the first door body is displaced in the vertical direction at the closed position. The divided door structure according to any one of claims 1 to 6, wherein the divided door structure is configured to move up and down following the first door body at a moving speed of / 2.   The drive unit includes a shaft that is rotatably supported by the frame body, and a drive unit that drives the shaft via a speed reduction mechanism, and a drive pulley among the pair of upper and lower pulleys is the shaft. The divided door structure according to any one of claims 1 to 7, wherein the divided door structure is fitted and fixed to the door. An encoder that detects the number of rotations of the shaft or the drive unit, and a lift control unit that controls the lift of the first door body between an open position and a closed position based on an output signal of the encoder,
The divided door structure according to claim 8, wherein the elevating control unit is configured to stop the driving machine when detecting a load change of the first door body or the second door body based on an output signal of the encoder. . A third door body that is fixed to the first cable strip at a predetermined distance from the first door body in a vertical direction, and is movable up and down along the first guide member by rotation of the pulley;
A fourth door body that is arranged so as to be superimposed on the third door body and that can freely move up and down along a guide member different from the first guide member;
A third rope having one end fixed to the frame and the other end fixed to the third door;
A second pulley supported by the third rope and fixed to the fourth door body;
The divided door structure according to any one of claims 1 to 9, further comprising: A fifth door that is arranged so as to overlap the second door and is movable up and down along the third guide member;
A fourth rope having one end fixed to the frame and the other end fixed to the second door;
A third pulley supported by the fourth rope and fixed to the fifth door body;
The divided door structure according to claim 1 or 2, further comprising:

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