JP6595159B2 - Opening device - Google Patents

Description

  The present invention relates to an opening device.

  Conventionally, a smoke exhaust window for exhausting smoke generated by a fire is sometimes installed in a store or the like. As such a flue gas window, an outside-down type or an inside-down type window is widely known. However, if, for example, an inversion system is adopted as the smoke exhaust window, it is necessary to secure in advance a space for the shoji to be pushed out when the smoke exhaust window is opened, so that the sales floor area is reduced.

  In view of this, an up-and-down smoke exhaust window in which the shoji is slid along the vertical frame has been proposed (see, for example, Patent Document 1). With such a raising and lowering smoke exhaust window, it is possible to prevent the shoji paper from protruding indoors and outdoors.

  By the way, when the latch of the raising / lowering method which is proposed in Patent Document 1 is released, the shoji descends along the vertical frame by its own weight. At this time, an auxiliary mechanism using the restoring force of the mainspring is provided for the purpose of reducing the impact when the shoji collides with the horizontal rail or the like. According to this auxiliary mechanism, as a result of the reaction force that attempts to unwind the spring-like metal belt-shaped member pulled out as the shoji descends, the shoji descending speed can be reduced, and the shoji can be used as a cross member. It is said that the impact at the time of colliding with can be reduced.

Japanese Patent No. 4838343

  However, it is necessary to provide a plurality of auxiliary mechanisms using the restoring force of the spring spring as in Patent Document 1, and it cannot be said that the auxiliary mechanism has a high braking force. In particular, when a continuous window in which a plurality of smoke exhaust windows are arranged in the horizontal direction is assumed, it is required to develop a braking device that has a higher braking force and that can collectively control the plurality of smoke exhaust windows.

  This invention is made | formed in view of the above, The objective is to provide an opening part apparatus provided with the braking device which has braking force higher than before.

  To achieve the above object, the present invention provides a frame (for example, a frame (for example, a vertical frame 23, vertical 3 described later) and a frame (for example, an upper frame 21, non-circular 4 described later) framed (for example, A frame 20) to be described later, a shoji (for example, shoji 8 described later) that is housed in the frame and is held movably up and down along the longitudinal member, and the shoji moves downward. An opening device (e.g., an opening device 1 described later) that applies a braking force to the shoji, and the braking device generates a hydraulic braking force (e.g., an oil pressure braking device (e.g., an opening device 1 described later)). It is a later-described hydraulic braking device 93).

  A plurality of the frame bodies are provided in the lateral direction, the shojis are accommodated in the plurality of the frame bodies provided in series, and the braking device collectively applies a braking force to the plurality of shojis. It is preferable.

  The opening device is preferably a smoke exhaust window device.

  ADVANTAGE OF THE INVENTION According to this invention, an opening part apparatus provided with the braking device which has braking force higher than before can be provided.

It is the figure which looked at the opening part apparatus which concerns on one Embodiment of this invention from the indoor side. It is a longitudinal cross-sectional view (AA sectional view taken on the line of FIG. 1) of the opening part apparatus which concerns on the said embodiment. It is a cross-sectional view (BB sectional view of FIG. 1) of the opening part apparatus which concerns on the said embodiment. It is a cross-sectional view (CC line sectional view of Drawing 1) of the opening part device concerning the above-mentioned embodiment. It is a figure which shows the structure of an operator. It is a figure which shows the structure of an operator. It is a figure which shows operation | movement when a shoji descends sequentially.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In this specification, the “finding direction” is the longitudinal direction of the upper frame, lower frame, and vertical frame of the opening device housed in the opening formed in the building (that is, in the plane of the glass or shoji). Direction), and the “look-in direction” means an indoor / outdoor direction (that is, a depth direction).
FIG. 1 is a view of the opening device 1 according to the present embodiment as viewed from the indoor side. The opening device 1 is an opening device having a smoke exhausting mechanism installed in a store or the like.

  The opening part apparatus 1 is stored in the opening formed in the building. The opening part apparatus 1 is provided with the window frame 2 attached to the opening of a building. The window frame 2 is partitioned into an upper frame 21, a lower frame 22, a left vertical frame 23 as viewed from the indoor side, a right vertical frame (not shown), and a plurality of openings arranged in the direction of finding. It is formed by the vertical 3 and the invisible 4 that divides the opening formed by the vertical 3 up and down, and an automatic door or glass is fitted into these window frames 2.

  When the opening device 1 is viewed from the indoor side, the smoke exhaust window 51 is accommodated in the upper stage and the FIX window 52 is accommodated in the lower stage from the left side to the third stand from the left side. Three window units 5 are continuously arranged. Further, when the opening device 1 is viewed from the indoor side, a FIX window in which FIX windows 61 and 62 are housed in the upper and lower stages on the right side of the third side wall 3 from the left side with the invisible eye 4 as a boundary. Units 6 are connected in series.

  As shown in FIG. 1, the opening device 1 includes a vertical frame 23 and a vertical 3 as vertical members, and an upper frame 21 as horizontal members and an upper frame 21 in the upper stage of the left smoke exhaust window unit 5 as viewed from the indoor side. A plurality of frames 20 each framed by the intangible 4 are connected in the horizontal direction (right direction in FIG. 1). A shoji 8 that is slidable up and down along the vertical frame 23 is held in each frame body 20 that is continuously provided. The shoji 8 is assembled by an upper rod 81, a lower rod 82, a left rod 83, and a right rod 84, which will be described later. These will be described in detail later.

  The opening device 1 includes an operator 9. The operator 9 is provided at the upper end on the indoor side of the vertical frame 23. Alternatively, it may be provided in the vertical 3. The operator 9 opens and closes the smoke exhaust window by winding up or pulling out one end of the wire 7 extending in the direction of finding. The operator 9 includes an operation pull 91 and a rising rope 92. The configuration of the operator 9 will be described in detail later.

  The opening device 1 includes a plurality of pulley units 10. The pulley unit 10 includes a first pulley 10a attached to the lower surface of the upper frame 21 described later, and a second pulley 10b attached to the indoor side surface of the upper arm 81 of the shoji 8 described later. Two pulleys 10 are provided on both end sides of the two frame bodies 20 on the upper left side of the smoke emission window unit 5 so as to be separated from each other on the left and right sides. However, the pulley unit 10 of the frame body 20 adjacent to the FIX window 61 is provided with only the second pulley 10 b, and the wire 7 is fixed to the upper frame 21. The configuration of the pulley unit 10 will be described in detail later.

Next, the left smoke exhaust window unit 5 as viewed from the indoor side of the opening device 1 will be described in detail with reference to FIGS. 2 to 4 are cross-sectional views of the opening device 1 in a state where the shoji 8 is closed.
FIG. 2 is a vertical cross-sectional view of the opening device 1, and is a cross-sectional view taken along line AA of FIG. As shown in FIG. 2, the opening part apparatus 1 is equipped with the glass 51a accommodated in the shoji 8 located in the upper stage, and the glass 52a accommodated in the lower opening part. The glass 51a and the glass 52a are single plate glass.

As shown in FIG. 2, the upper frame 21 includes an upper frame main body 211 having a U-shaped cross section that is open on the indoor side, and extends from the upper frame main body 211 to the outdoor side and has a groove. The upper frame extending portion 212 that forms 212a and the upper frame bent portion 213 that extends outward from the upper frame extending portion 212 and bends downward.
The groove 212 a is closed by the groove closing member 215. The lower surface of the upper frame main body 211 and the lower surface of the groove closing member 215 are formed flush with each other. On the lower surface of the upper frame bent portion 213, a draining material 213a for preventing rainwater or the like from entering between the shoji 8 and the upper frame 21 is disposed.
The upper frame 21 can be formed, for example, by extruding aluminum.

The first pulley 10 a is attached to the lower surface of the upper frame 21. The first pulley 10a is disposed outside the frame body 20 with respect to a second pulley 10b described later. The first pulley 10a includes a shaft portion 11a extending in the prospective direction and a rotatable disk (ring ring) 12a.
The shaft portion 11a is fixed to the support 13a attached to the lower surface of the upper frame 21 with a screw in an L shape in cross section and extending in the lateral direction. The disk 12a is rotatably supported by the shaft portion 11a. A V-shaped groove is formed on the outer peripheral surface of the disk 12a so that the central portion in the thickness direction has a small diameter. The wire 7 is wound from the upper outer periphery of the disk 12a to the right outer periphery (see FIG. 1). When the wire 7 is inserted into the V-shaped groove and wound, the disk 12a rotates and receives a load generated in response to the opening / closing operation of the shoji 8 by the operator 9.

The seamless 4 has a seamless main body 41 that is disposed on the indoor side and has a hollow structure having a hollow portion. The invisible body portion 41 has a suspending portion 41a that hangs from an end on the outdoor side, thereby forming a groove 41b that holds the upper end portion of the glass 52a.
The intangible 4 can be formed, for example, by extruding aluminum.

  The lower frame 22 is disposed on the indoor side and has a hollow structure having a hollow structure, and a lower frame extending from the lower frame body section 221 to the outdoor side and having a hollow structure. And an installation portion 222. The lower frame main body portion 221 has a standing portion 221a that is erected from the upper end on the outdoor side and forms a part on the indoor side of a groove 223a described later.

The lower frame 22 is fastened and supported by a draining material 227 and a support member 228 respectively engaged with the anchors 225 and 226 by a fixing tool such as a screw from the indoor and outdoor directions. The lower frame 22 can be formed, for example, by extruding aluminum.
A glass holding member 223 that is locked to the lower frame extending portion 222 is disposed on the upper outdoor side of the lower frame 22. The lower frame 22 and the glass holding member 223 form a groove 223a that holds the lower end of the glass 52a. Note that a cap member is disposed below the right vertical frame (not shown).

  The glass 52a is supported by a support member 52f disposed inside the groove 223a. The upper end portion of the glass 52a is sandwiched between the backup materials 52j and 52j in the groove 41b. Further, seal materials 52i and 52i are applied below the backup materials 52j and 52j. The lower end of the glass 52a is sandwiched between backup materials 52g and 52g in the groove 223a. Further, sealing materials 52h and 52h are applied above the backup materials 52g and 52g.

As shown in FIG. 2, the shoji 8 is disposed above the outdoor side.
The upper collar 81 of the shoji 8 has an upper collar body 811 having a hollow structure having a hollow portion. The upper gutter main body 811 includes an upper gutter main body elevating part 811a erected from the indoor side lower part, an upper eaves main body erecting part 811b erected from the outdoor side upper part, And an upper heel body standing portion 811c in which the mohair member 811d is disposed. The upper heel main body standing portion 811b abuts on the draining material 213a.

A second pulley 10b is attached to the indoor side surface of the upper rod 81. This 2nd pulley 10b is arrange | positioned inside the frame 20 with respect to the above-mentioned 1st pulley 10a. The second pulley 10b includes a shaft portion 11b extending in the prospective direction and a rotatable disk (ring ring) 12b.
The shaft 11b has a base end fixed to the indoor side surface of the upper collar 81 with a screw. Further, a pulley cover 13b covering the disk 12b is attached to the tip on the indoor side of the shaft portion 11b. The disk 12b is rotatably supported by the shaft portion 11b. A V-shaped groove is formed on the outer peripheral surface of the disk 12b so that the central portion in the thickness direction has a small diameter. The wire 7 is wound from the lower outer periphery of the disk 12b to the right outer periphery (see FIG. 1). As the wire 7 is inserted into the V-shaped groove and wound, the disk 12b rotates and receives a load generated in response to the opening / closing operation of the shoji 8 by the operator 9.

  A glass holding member 812 that is locked to the upper rod main body portion 811 is disposed on the lower side of the upper rod 81 outdoors. A groove 812a for holding the upper end portion of the glass 51a is formed by the upper collar 81 and the glass holding member 812.

  The lower collar 82 of the shoji 8 has a lower collar body 821 having a hollow structure having a hollow portion. The lower armor main body part 821 includes a lower armor main body standing part 821a erected from the indoor upper part, a lower armor main part erected part 821b suspended from the lower part on the outdoor side, And a lower heel main body hanging portion 821c in which a mohair member 821d is disposed. The shock-absorbing member 821e is sandwiched between the tip of the lower heel main body hanging portion 821b and the tip of the lower heel main body hanging portion 821c. The buffer member 821e abuts on a shoji fall prevention member (not shown) disposed on the vertical frame 23 and the vertical 3 when the shoji 8 is opened.

  A glass holding member 822 that is locked to the lower heel main body portion 821 is disposed on the outdoor upper side of the lower heel 82. A groove 822a for holding the lower end of the glass 51a is formed by the lower collar 82 and the glass holding member 822.

  The glass 51a is supported by a support member 51f disposed inside the groove 822a. The upper end of the glass 51a is sandwiched between backup materials 51j and 51j in the groove 812a. Further, a sealing material 51i is applied below the outdoor side backup material 51j. The lower end of the glass 51a is sandwiched between backup materials 51g and 51g in the groove 822a. Further, a sealing material 51h is applied above the outdoor side backup material 51g.

3 is a cross-sectional view of the opening device 1 and is a cross-sectional view taken along the line BB of FIG. That is, FIG. 3 shows a cross-sectional view of the FIX window 52 in the smoke exhaust window unit 5.
The vertical frame 23 includes a vertical frame main body portion 231 disposed on the indoor side, and a vertical frame side holding portion 232 provided on the outdoor side of the vertical frame main body portion 231.

  The vertical frame main body 231 is formed in, for example, an S-shaped cross section. The vertical frame main body 231 is formed with a groove 231a that is open on the right side when viewed from the indoor side.

The vertical frame side holding part 232 is extended from the outdoor side of the vertical frame main body part 231.
The vertical frame side holding part 232 extends from the vertical frame main body part 231 to the outdoor side of the vertical frame expectation part 233, and extends from the tip of the vertical frame expectation part 233 to the inside in the direction of finding (right side as seen from the indoor side). And a vertical frame finding portion 234. The vertical frame finding portion 234 has a groove 234a that is open on the right side when viewed from the indoor side.

As shown in FIG. 3, the vertical 3 has a vertical main body 31 disposed on the indoor side, and a vertical side holding portion 32 provided on the outdoor side of the vertical main body 31.
The vertical body 31 is formed in a cylindrical shape. The vertical main body 31 includes a first vertical main body 311 arranged on the right side and a second vertical main body 312 arranged on the left side when viewed from the indoor side. The first vertical body 311 is formed, for example, in an S-shaped cross section.

The first vertical body 311 is formed with a groove 311a that is open on the right side when viewed from the indoor side. On the other hand, a groove 312a opened in the opposite direction to the groove 311a is formed in the second vertical main body 312.
In the present embodiment, a pair of adjacent glasses 52a and 52a are held by inserting side end portions facing the grooves 311a and 312a, respectively. Of the groove 311a and the groove 312a, the groove 311a is formed deeper. The first vertical main body 311 and the second vertical main body 312 are fastened using screws 313 as fastening members at the portions where the grooves 311a and 312a are formed.

The vertical holding part 32 is extended from the outdoor side on the first vertical main body 311 side.
The vertical side holding portion 32 includes a vertical projection portion 321 extending from the vertical main body portion 31 (first vertical main body portion 311) to the outdoor side, and an inner side in the direction of finding from the tip of the vertical projection portion 321. By having the standing locating portions 322 and 323 extending respectively, it is formed in a T-shaped cross section. The vertical locating portions 322 and 323 extend to the right side and the left side as viewed from the indoor side. The standing side holding part 32 has a groove 322a opened to the right side and a groove 323a opened to the left side when viewed from the indoor side.

  The left end of the glass 52a as viewed from the indoor side is sandwiched between backup materials 52b and 52b in the groove 231a. Further, sealing materials 52c and 52c are applied on the right side of the backup materials 52b and 52b. The right end of the glass 52a as viewed from the indoor side is sandwiched between the backup materials 52d and 52d in the groove 312a. Further, seal materials 52e and 52e are applied to the left of the backup materials 52d and 52d.

  4 is a cross-sectional view of the opening device 1 and is a cross-sectional view taken along the line CC of FIG. That is, in FIG. 4, the cross-sectional view in the smoke exhaust window 51 among the smoke exhaust window units 5 is shown. The structure of the vertical frame 23 is basically the same as the structure on the right side of the vertical 3 as viewed from the indoor side. Since the structure of the vertical frame 23 and the vertical 3 in the smoke exhaust window 51 is the same as the structure of the vertical frame 23 and the vertical 3 in the FIX window 52, different configurations, particularly the shoji 8, will be described below.

As shown in FIG. 4, the groove 231a formed in the vertical frame main body portion 231 has a right side surface as viewed from the indoor side formed by the vertical frame main body portion 231 and the groove closing member 231b closed by the groove closing member 231b. It is the same.
Similarly to the groove 231a, the grooves 311a and 312a of the vertical main body 31 are also closed by groove closing members 311b and 312b, respectively.
Further, in the FIX window 52 portion, no shoji was arranged inside the vertical frame side holding portion 232 and the vertical side holding portion 32, but in the smoke exhausting window 51 portion, the port 83 and starboard of the shoji 8 were placed. 84 is inserted into the vertical frame side holding portion 232 and the vertical side holding portion 32, respectively, so that the shoji 8 is held slidably up and down.

  The port 83 of the shoji 8 includes a port body 831 and a left attachment member 832 attached to the port body 831. The port main body 831 has a port glass holding portion 831a that forms a groove 831b into which the glass 51a is fitted. The left attachment material 832 is disposed between the port body 831 and the vertical frame expectation part 233 or the vertical expectation part 321. The left attachment material 832 is attached to the port main body 831 by screws 831c as fastening members from the inside of the port glass holding portion 831a.

  The starboard 84 of the shoji 8 has a starboard body 841 and a right attachment member 842 attached to the starboard body 841. The starboard body 841 has a starboard glass holding portion 841a that forms a groove 841b into which the glass 51a is fitted. The right attachment material 842 is disposed between the starboard main body 841 and the standing expectation part 321. The right attachment material 842 is attached to the starboard body 841 from the inner side of the starboard glass holding portion 841a by a screw 841c as a fastening member.

  The left end of the glass 51a as viewed from the indoor side is sandwiched between the backup materials 51b and 51b in the groove 831b. Further, a sealing material 51c is applied to the right side of the outdoor side backup material 51b. The right end of the glass 51a as viewed from the indoor side is sandwiched between the backup materials 51d and 51d in the groove 841b. Further, a seal material 51e is applied to the left of the outdoor backup material 51d.

Next, the operator 9 will be described in detail.
5 and 6 are diagrams showing the configuration of the operator 9. Specifically, FIG. 5 is a diagram illustrating a state in which the cover member 90 (see FIG. 2) of the operator 9 is removed, and FIG. 6 illustrates a state in which the lid member 9b is removed from the casing 9a of the operator 9. FIG.
As shown in FIG. 5, the operator 9 includes an operation pull 91, a rising rope 92, a hydraulic braking device 93, a pulley 94, a release lever 910, a first transmission shaft 911, a second transmission shaft 912, A drive shaft 941 and a spring material 914 are provided.

  The operation pull 91 is composed of a wire with a handle attached to the lower end (see FIG. 1). The upper end of the operation pull 91 is connected to one end of the release lever 910. The release lever 910 is an elongated plate and is pivotally supported so as to be rotatable about a first transmission shaft 911 provided at the other end. A spring material 914 is provided in contact with the lower portion of the release lever 910. An elongated hole 910a is formed in the approximate center of the release lever 910, and the second transmission shaft 912 is inserted through the elongated hole 910a.

  The ascending rope 92 is composed of an endless rope. The ascending rope 92 is wound around the outer peripheral surface of the pulley 94. A V-shaped groove is formed on the outer peripheral surface of the pulley 94 so that the central portion in the thickness direction has a small diameter, and the rising rope 92 is inserted into the groove. The pulley 94 is rotatably supported around the drive shaft 941.

The hydraulic braking device 93 is provided in the approximate center of the operator 9. The hydraulic braking device 93 is formed in a disc shape, and a drum shaft 950 that is a rotating shaft of a drum 95 that winds a wire 7 described later is inserted through the center of the hydraulic braking device 93. That is, the hydraulic braking device 93 applies a braking force to the rotation of the drum 95 and the drum shaft 950.
Since the hydraulic braking device 93 is smaller than other braking devices, the operator 9 is also reduced in size, and the appearance design is improved.

  The hydraulic braking device 93 generates a braking force by hydraulic pressure. In the hydraulic braking device 93, oil is sealed inside a disk-shaped housing, and a plurality of grooves are formed in a maze shape. Specifically, the side walls of the plurality of grooves formed concentrically are partially cut away so that adjacent grooves communicate with each other. As a result, the viscous oil enclosed in the disk-shaped housing flows through the maze-shaped groove, thereby generating a braking force. Since the hydraulic braking device 93 uses hydraulic pressure, the hydraulic pressure increases as the load increases, and a large braking force is generated. Therefore, the rotation of the drum 95 and the drum shaft 950 can be always controlled to be constant.

As shown in FIG. 6, the operator 9 includes a drum 95, a drum shaft 950, a first transmission gear 951, a second transmission gear 952, a third transmission gear 953, a drive gear 954, and a link plate 961. And comprising.
The drum 95 is rotatably supported around a drum shaft 950. The drum 95 is a winding shaft of the wire 7, and the wire 7 is wound around the winding shaft. On the surface side of the drum 95, a drum gear 95a having a larger diameter than each transmission gear described later is provided. When a normal shoji is closed, the drum gear 95a meshes with a first transmission gear 951 and a second transmission gear 952, which will be described later, so that the rotation of the drum 95 and the drum shaft 950 is restricted.

  The first transmission gear 951 and the third transmission gear 953 are provided around the first transmission shaft 911, the first transmission gear 951 is provided above, and the third transmission gear 953 is provided below. The second transmission gear 952 is provided around the second transmission shaft 912. The drive gear 954 is provided around the drive shaft 941.

  The first transmission shaft 911 and the second transmission shaft 912 are inserted through an elongated plate-like link plate 961 provided below the first transmission gear 951 and the second transmission gear 952. The link plate 961 is pivotally supported by the first transmission shaft 911 so as to be rotatable. That is, the second transmission shaft 912 and the second transmission gear 952 can be rotated about the first transmission shaft 911 by the link plate 961.

The first transmission gear 951 always meshes with the drum gear 95a and the second transmission gear 952.
The second transmission gear 952 always meshes with the first transmission gear 951. The second transmission gear 952 meshes with the drum gear 95a in accordance with the rotation operation of the link plate 961, and the meshing is released.
The third transmission gear 953 meshes with the drive gear 954.

Next, the opening / closing operation | movement of the shoji 8 by the operator 9 is demonstrated with reference to FIGS.
Here, FIG. 7 is a diagram illustrating an operation when the shoji 8 is sequentially lowered.
First, when the normal shoji is closed, the second transmission gear 952 meshes with the drum gear 95a, so that the rotation of the drum 95 and the drum shaft 950 is restricted, and the lowering of the shoji 8 is restricted.

  In this state, when the operator pulls the operation handle 91 downward for the purpose of smoke removal, the release lever 910 is moved downward against the upward biasing force generated by the spring material 914 being compressed by the release lever 910. Rotate toward. At this time, the second transmission shaft 912 inserted through the elongated hole 910a of the release lever 910 rotates downward together with the second transmission gear 952. Thereby, the meshing between the second transmission gear 952 and the drum gear 95a is released.

  When the pull operation of the operation pull 91 is stopped, the release lever 910 returns to the original position by the upward biasing force of the spring material 914. However, since the long hole 910a through which the second transmission shaft 912 is inserted has a predetermined length, the second transmission shaft 912 and the second transmission gear 952 do not return to their original positions, and the second transmission The engagement between the gear 952 and the drum gear 95a remains released.

  Then, by releasing the engagement between the second transmission gear 952 and the drum gear 95a, the restriction on the rotation of the drum 95 and the drum shaft 950 is released. At this time, since the wire 7 is wound around the plurality of first pulleys 10a attached to the upper frame 21 and the plurality of second pulleys 10b attached to the upper collar 81 of each shoji 8, the operator 9 It begins to descend from the shoji 8 on the side closest to That is, the lowering of the shoji 8 is started from the shoji 8 closest to the operator 9, and the lowering of the adjacent shoji 8 is started at the same time when the lowering of the shoji 8 is completed. In this way, the smoke exhaust window 51 is opened by sequentially lowering the shoji 8.

  Further, the shoji 8 is lowered and the wire 7 wound around the drum 95 is pulled out, and at the same time, the drum 95 and the drum shaft 950 are rotated. At this time, a braking force is generated by the hydraulic braking device 93, and the rotational speeds of the drum 95 and the drum shaft 950 are reduced. More specifically, since the braking force generated by the hydraulic braking device 93 is a braking force generated by hydraulic pressure, the larger the load, the larger the braking force is generated. As a result, the rotational speeds of the drum 95 and the drum shaft 950 are controlled to be constant, so that the shoji 8 is slowly and sequentially lowered at a constant speed.

  After all the shojis 8 are lowered and the smoke exhaustion is completed, when the operator pulls one of the ascending ropes 92 downward, the pulley 94 rotates. The rotation of the pulley 94 is transmitted to the drum gear 95a via the drive gear 954, the third transmission gear 953, and the first transmission gear 951. At this time, the second transmission shaft 912 and the second transmission gear 952 have not returned to their original positions, and the engagement between the second transmission gear 952 and the drum gear 95a remains released. Therefore, the drum 95 and the drum shaft 950 rotate and the wire 7 is wound up, whereby the shoji 8 is sequentially raised and closed.

According to this embodiment, the following effects are produced.
In this embodiment, the shoji 8 that is slidable up and down along the vertical frame 23 in the frame 20 is provided. Further, the brake device that applies a braking force to the shoji 8 when the shoji 8 slides downward is configured by a hydraulic brake device 93.
Here, the braking force generated by the hydraulic braking device 93 is a braking force generated by hydraulic pressure, so that the larger the load, the larger the braking force is generated. As a result, the rotational speeds of the drum 95 and the drum shaft 950 can be constantly reduced. Therefore, according to this embodiment, the shoji 8 can be opened slowly at a constant speed, and the impact when the shoji 8 collides with the cross member can be reduced.
Further, according to the present embodiment, a constant opening speed can always be maintained even if the size and weight of the window change.

In the present embodiment, the hydraulic braking device 93 is applied to the continuous window, and the braking force is applied to the plurality of shojis 8 at once. Thereby, the descent | fall of a some shoji can be controlled collectively, and the continuous opening of the continuous window by one braking device is possible.
In the present embodiment, the hydraulic braking device 93 is applied to the smoke exhaust window device. Thereby, it is possible to open the smoke exhaust window all at once with one braking device.

  Note that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

DESCRIPTION OF SYMBOLS 1 ... Opening device 2 ... Frame 21 ... Upper frame (cross member)
22 ... Bottom frame (cross member)
23 ... Vertical frame (vertical material)
3 ... vertical (longitudinal)
8 ... shoji 9 ... operator 93 ... hydraulic braking device (braking device)

Claims (2)

A frame framed by vertical and cross members;
Wires are wrapped around pulleys that are housed in the frame body, one on each side of the upper frame of the cross member, and one on each side of the upper collar, and move up and down along the vertical member. A shoji that is held movably,
A braking device that applies a braking force to the shoji when the shoji moves downward, and an opening device comprising:
The braking device is a hydraulic braking device that is provided on the indoor side of the frame and generates the braking force by hydraulic pressure, and includes a drum around which a wire for opening and closing the shoji is wound. To reduce the rotational speed,
The first transmission gear is always meshed with the drum gear connected to the drum,
The opening device is characterized in that the shoji starts to descend when the second transmission gear that is always meshed with the first transmission gear is released from the drum gear . The first transmission gear and the second transmission gear are attached to the link plate,
2. The opening device according to claim 1 , wherein the second transmission gear is released from the drum gear by rotating the link plate about the axis of the first transmission gear .

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