JP2008303612A - Opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing device, capable of easing concentration of a load resulting from contact with a stopper part to the lower end side of an opening/closing body. <P>SOLUTION: In the opening/closing device adapted so that the opening/closing body 20 which is delivered from a storage part 10 to perform closing operation downward is received and stopped by a stopper part fixed to a fixed portion, stopper parts 41, 42 and 43 are provided in a plurality of positions extending over the vertical direction, and a plurality of parts of the opening/closing body 20 is received by the plurality of stopper parts 41, 42 and 43. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an opening / closing device that receives and stops an opening / closing body that is drawn out from a storage portion and closes downward by a stopper portion fixed to a non-moving portion such as a guide rail.

Conventionally, in this kind of invention, for example, as described in Patent Document 1, a rigid body portion (steel shutter 3) located on the upper side and a flexible sheet portion (fireproof sheet 4) located on the lower side are disclosed. To form an opening / closing body (door body 1), and when the lower end of the flexible sheet portion comes into contact with a seating target site (for example, the ground surface, floor surface, frame member, etc.), There is an opening / closing device in which the lower end is received by a stopper portion (stopper 19) to stop the closing operation of the opening / closing body.
According to this conventional opening / closing apparatus, even when the opening / closing body during the closing operation comes into contact with the obstacle on the lower side, the flexible sheet portion bends, so that it is transmitted from the opening / closing body to the obstacle. The pressing force can be reduced.

However, in the prior art, since the lower end of the rigid body portion is brought into contact with the stopper portion when fully closed, the load concentrates on the lower end of the rigid body portion at the time of the contact. Therefore, if the weight of the rigid body portion is too heavy with respect to the strength of the lower end of the rigid body portion, the lower slat constituting the lower end side of the rigid body portion may be deformed, or the slat and the flexible sheet portion may be Since there exists a possibility that a connection location may be damaged, the necessity of restrict | limiting the weight of the said rigid body part arises.
JP-A-11-313901

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is to provide an opening / closing device that can alleviate the concentration of the load due to contact with the stopper portion on the lower end side of the opening / closing body. There is to do.

  In order to solve the above-mentioned problem, the technical means according to the present invention is an open / close device that receives and stops an open / close body that is drawn out of a storage portion and closes downward by a stopper portion fixed to a non-moving portion. The stopper portions are provided at a plurality of locations in the vertical direction, and a plurality of portions of the opening / closing body are received by the plurality of stopper portions.

  According to a further technical means, the opening / closing body is provided with a plurality of locking projections protruding in a direction crossing the closing direction, and each of the plurality of locking projections is connected to each of the plurality of stopper portions. It is characterized by being received by.

  According to a further technical means, at least a part of the opening / closing body is constituted by three or more opening / closing body constituting members connected to the upper and lower sides, and one of the opening / closing body constituting members is connected to the adjacent one. The other opening / closing member constituting member is provided with play so that the other opening / closing member constituting member can be moved in the vertical direction, and the one or more opening / closing member constituting members are disposed above and below as the plurality of locking projections. A first locking projection and a second locking projection, the first stopper projection for receiving the first locking projection and the second as the plurality of stoppers. A second stopper portion for receiving the locking projection, wherein the first locking projection is received by the first stopper portion, and the second locking projection With the second stopper portion receiving the The play is secured at the connection location between the opening / closing member constituting member to which the second locking projection is fixed and the opening / closing member adjacent to the lower side, and the play is clogged at other connection locations. As described above, the distance between the first stopper portion and the second stopper portion is set.

  According to a further technical means, the first locking projection is received by the first stopper portion and the second locking projection is received by the second stopper portion. The distance between the opening / closing member constituting member to which the one locking projection is fixed and the opening / closing member constituting member to which the second locking protrusion is fixed is set so that the disposing pitch of the opening / closing member is a. The play size of the connecting part of the upper and lower opening / closing member constituting members is b, and the opening / closing member constituting member from which the first locking projection is fixed to the opening / closing member forming member to which the second locking protrusion is fixed. When the number of opening / closing member constituting members is n, it is calculated by the formula a × (n−1) + b.

  According to a further technical means, the upper part of the opening / closing body is constituted by a rigid body part, and the lower part of the opening / closing body is constituted by a flexible sheet part, and the flexible sheet part is a seating target part. The rigid body portion is received by the plurality of stopper portions when the contact portion is fully closed to stop the closing operation of the opening / closing body.

The switchgear according to the present invention includes a mode in which the switchgear is used only to perform a closing operation (for example, a shutter device that is closed for the purpose of smoke shield or flame shield only in an emergency), or a switchgear. Includes a mode in which both the opening operation and the closing operation are performed.
Further, the opening / closing device includes an aspect in which the opening / closing body is wound and stored on the winding shaft, an aspect in which the opening / closing body is stored in the opening direction side without being wound on the winding shaft, and the like. Including.

In the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the closed state.
In the present specification, the “opening / closing body width direction” means a direction that is substantially orthogonal to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body.
Further, in this specification, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body slides to partition or open the space.

Since the present invention is configured as described above, the following effects can be obtained.
It is possible to reduce the concentration of the load due to the contact with the stopper part on the lower end side of the opening / closing body, and the lower end side of the opening / closing body is deformed or damaged by the contact with the stopper part. Therefore, the restriction on the weight of the rigid body portion can be relaxed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The present embodiment is arranged in or inside an opening part or inside of a housing such as a house, building, warehouse, factory, underground shopping center, tunnel, or vehicle loading platform, and opens and closes the opening, or partitions or opens the space inside the housing. As a particularly preferable aspect, an example applied to a fire prevention shutter device that is automatically closed in an emergency such as a fire to prevent the spread of flames and smoke will be described.

  The opening / closing apparatus 1 includes an opening / closing body 20 that is drawn out from the storage unit 10 and performs a closing operation, and a guide rail 30 that guides the widthwise end of the opening / closing body 20 in the closing direction. When closed, the rigid body portion 21 constituting the opening direction side portion of the opening / closing body 20 is received by the receiving member 40 having a plurality of stopper portions 41, 42, 43.

The storage unit 10 includes a winding shaft 12 that winds and unwinds the opening / closing body 20 in a storage case 11 having an opening for allowing the opening / closing body 20 to appear and retract on the lower side, a chain and a winding shaft 12. An opening / closing device 13 that is electrically wound via a power transmission means (not shown) such as a sprocket, and an automatic closing device (not shown) that allows the output shaft of the opening / closing device 13 to freely rotate in response to a disaster prevention signal; It has.
According to the storage unit 10, when a control unit (not shown) receives a disaster prevention signal and a command for closing the opening / closing body 20 is issued from the control unit, the output shaft and the winding shaft 12 of the switch 13 are freely rotated. The opening / closing body 20 wound on the winding shaft 12 is drawn downward by its own weight and is closed. In this closing operation, the rotational speed of the winding shaft 12 is limited by a speed governor (not shown).

  In addition, as another example of the storage unit 10, a mode in which the winding shaft 12 is exposed without including the storage case 11, a mode in which the opening / closing body 20 is stored in the opening direction side without winding up, etc. Is also possible.

  The opening / closing body 20 includes a rigid body portion 21 that forms a portion on the opening direction side, a flexible sheet portion 22 that forms a portion on the closing direction side relative to the rigid body portion 21, and the flexible sheet portion 22. And a seat plate member 23 connected to the end portion on the most closed direction side (the lowermost end portion in the illustrated example), and the end portion on the opening direction side of the rigid body portion 21 (the upper end portion in the illustrated example). Is fixed to the outer peripheral surface of the winding shaft 12.

  The rigid body portion 21 includes a plurality of opening / closing body constituent members 21a connected vertically and a plurality of locking projections 21b1, 21b2, and 21b3 protruding in a direction intersecting the closing direction of the opening / closing body 20.

The opening / closing member constituting member 21a is a so-called slat formed by bending a curled portion on each of an upper end side and a lower end side of a horizontally long and substantially rectangular metal plate.
The opening / closing member constituting member 21a is configured to rotate one of the upper and lower adjacent opening / closing member constituting members 21a and 21a with respect to the other, and between the adjacent upper and lower opening / closing member constituting members 21a and 21a. A plurality are connected in the vertical direction so as to have play b (see FIG. 2).

In more detail, the play b is a clearance secured at a connection portion between the upper and lower adjacent opening / closing member constituent members 21a and 21a due to the shape of the curl portion on the upper and lower ends of each opening / closing member constituent member 21a. Thus, the opening / closing member constituting members 21a, 21a adjacent to each other in the vertical direction can be moved a predetermined amount in the vertical direction with respect to one of the members.
According to a preferred example shown in FIG. 2B, the play b includes an opening / closing member constituting member 21a (the uppermost opening / closing member constituting member 21a shown in the drawing) having the second locking projection 21b2 and its lower side. The opening / closing body constituting member 21a adjacent to the opening 21a is played when it is separated to the maximum extent. However, as another example, the adjacent opening / closing body forming members 21a, 21a come closer to each other than shown, and the illustrated play b It is also possible to ensure a smaller play. That is, it is sufficient that there is no play between the adjacent opening / closing member constituting members 21a and 21a.

The plurality of locking projections are arranged at predetermined intervals across the vertical direction of the rigid body portion 21. According to the illustrated example, the first locking projections 21b1 and the second locking projections are sequentially arranged from the lower side. There are three types of protrusions 21b2 and a third locking protrusion 21b3.
Each of the locking projections 21b1, 21b2, and 21b3 is a substantially cuboid rigid body (for example, made of a metal material) according to the illustrated example, and the one arranged on the upper side has a longer dimension in the opening / closing body width direction. Yes.

If it demonstrates more concretely, the 1st latching convex part 21b1 will be fixed to each of the both sides with respect to the opening-and-closing body structural member 21a of the lowest end side which comprises the rigid body part 21. FIG.
In addition, the second locking projection 21b2 is fixed to each of both sides of the opening / closing member constituting member 21a that is a predetermined number higher than the opening / closing member constituting member 21a on the lowermost end side.
The third locking projection 21b3 is fixed to each of both sides of the opening / closing member constituting member 21a that is a predetermined number above the second locking projection 21b2.
The means for fixing each of the locking projections 21b1, 21b2, 21b3 to the opening / closing member constituting member 21a may be welding, screwing, fitting, or the like.

  And as for these latching convex parts 21b1, 21b2, and 21b3, the protrusion amount to the opening / closing body width direction from the opening / closing body structural member 21a becomes so large that it is located above.

  The arrangement intervals of these locking projections 21b1, 21b2, 21b3 can be different, but the load received from the stopper portions 41, 42, 43 in the vertical direction of the rigid body portion 21 is evenly distributed. Furthermore, it is more preferable to set it at substantially equal intervals.

Further, the flexible sheet portion 22 is made of silica cloth having fire resistance and relatively light weight. As other examples of the material of the flexible sheet portion 22, a glass cloth, a vinyl chloride resin sheet material subjected to fluorine processing, a synthetic resin sheet material including glass fibers, or the like can be used.
In addition, when the opening / closing device 1 is not used for the purpose of flameproofing, the flexible sheet portion 22 may be made of a flexible sheet material having no fire resistance.
The flexible sheet portion 22 may be configured by connecting a plurality of sheet materials in a vertical direction, a horizontal direction, an oblique direction, or the like, or may be configured by a single sheet material.

And the flexible sheet | seat part 22 is fixed to the slat 21a of the lowest end side via the fastening bracket etc. in the upper end part side.
In addition, a seat plate member 23 for contacting a seating target portion p (for example, a floor surface, the ground, a frame member, etc.) when fully closed is provided at the lower end side of the flexible sheet portion 22 in the opening / closing body width direction. Connected across.
Further, as another example other than the illustrated example, the seat plate member 23 may be omitted.

Further, the guide rail 30 has an elongated shape extending between the seating target portion p and the storage portion 10 and has a substantially concave guide groove (not shown) surrounding the end of the opening / closing body 20 in the lateral width direction. . The guide groove may have a substantially constant width dimension in the thickness direction of the opening / closing body over substantially the entire length in the vertical direction, and a spacer or the like is provided at a location corresponding to the flexible sheet portion 22 in order to improve airtightness. The gap between the flexible sheet portion 22 and the flexible sheet portion 22 may be reduced.
A receiving member 40 is fixed to the groove bottom surface of the guide rail 30.

The receiving member 40 is a long rigid body (for example, made of a metal material) extending in the vertical direction. As shown in FIG. 1, the upper side is formed in a substantially stepped shape, whereby a plurality of stopper portions 41, 42 are formed. , 43.
According to the illustrated example, the stopper portions are a first stopper portion 41, a second stopper portion 42, and a third stopper portion 43 in order from the lower side.

The first stopper portion 41 is formed in a substantially flat surface shape so as to receive the distal end side of the first locking convex portion 21b1 from below.
Similarly, the second stopper portion 42 receives the tip side of the second locking projection 21b2, and the third stopper portion 43 receives the tip side of the third locking projection 21b3. These are formed in a substantially flat surface shape.
Therefore, the stoppers 41, 42, 43 are arranged closer to the groove bottom of the guide rail 30 as the upper side is closer.

  The arrangement interval of the stopper portions arranged vertically will be described in detail by taking the configuration of the first stopper portion 41 and the second stopper portion 42 as an example. As shown in FIG. Opening / closing member configuration in which the second locking projection 21b2 is fixed in a state where the projection 21b1 is received by the first stopper 41 and the second locking projection 21b2 is received by the second stopper 42 The first stopper portion 41 and the second stopper 41 are arranged so that the play b is secured at the connection portion between the member 21a and the opening / closing member constituting member 21a adjacent to the lower side of the member 21a and the play b is clogged at other connection portions. A distance from the stopper portion 42 is set.

Further, if the above configuration is expressed by a mathematical expression, the distance c between the opening / closing member constituting member 21a to which the first locking projection 21b1 is fixed and the opening / closing member forming member 21a to which the second locking projection 21b2 is fixed. '(Distance between the center lines) is a first locking position, where a is the pitch of the opening / closing member constituting members 21a, and b is the play dimension at the connection between the adjacent upper and lower opening / closing member constituting members 21a, 21a. When the number of the open / close member constituting members 21a from the open / close member constituting member 21a to which the convex portion 21b1 is fixed to the open / close member constituting member 21a to which the second locking convex portion 21b2 is fixed is n, “c ′ = a × (n−1) + b ”.
Therefore, the relative position of the lower end surface of the first locking projection 21b1 with respect to the opening / closing member constituting member 21a to which the first locking projection 21b1 is fixed, and the opening / closing body configuration to which the second locking projection 21b2 is fixed. When the relative position of the lower end surface of the second locking projection 21b2 with respect to the member 21a is made equal, the distance between the upper end contact surface of the first stopper portion 41 and the upper end contact surface of the second stopper portion 42 c is equal to the above c ′ (in other words, “c = c”), and this interval c is calculated by the equation “c = a × (n−1) + b”.
Note that the relative position of the lower end surface of the first locking projection 21b1 with respect to the opening / closing member constituting member 21a to which the first locking projection 21b1 is fixed, and the opening / closing body configuration to which the second locking projection 21b2 is fixed. When the relative position of the lower end surface of the second locking projection 21b2 with respect to the member 21a is different, the interval c is increased or decreased by the difference k in the relative position, and “c = a × (n−1)”. + B + k ".

The play dimension b may be a dimension within a movable range in which the upper open / close member constituting member 21a of the open / close member constituting members 21a and 21a adjacent in the vertical direction is movable in the vertical direction.
In addition, the distance between the first stopper part 41 and the second stopper part 42 has been described above, but the distance between the second stopper part 42 and the third stopper part 43 is also the same as the above configuration. Is set.

In a preferred example shown in FIG. 2, play b is ensured only at the connection point between the opening / closing member constituting member 21a to which the second locking projection 21b2 is fixed and the opening / closing member constituting member 21a adjacent to the lower side thereof. However, as another example, the adjacent opening / closing member between the opening / closing member constituting member 21a to which the first locking protrusion 21b1 is fixed and the opening / closing member forming member 21a to which the second locking protrusion 21b2 is fixed. In the body constituent members 21a, play b is secured at a plurality of connection locations on the second locking projection 21b2 side, and play b at least one connection location on the first stopper portion 41 side is clogged. It is also possible.
In the case of this configuration, the above formula is “c = a × (n−1) + xb”, where x is the number of connection points where play b is secured.
Further, as another example, the play b is used only at the connection point between the opening / closing member constituting member 21a to which the second locking projection 21b2 is fixed and the opening / closing member constituting member 21a adjacent to the lower side thereof. It is also possible to secure a small play b1 (not shown). In the case of this configuration, the above mathematical formula is “c = a × (n−1) + b1 (where 0 <b1 <b)”.

Next, the characteristic operation and effect of the opening / closing device 1 having the above configuration will be described in detail.
First, when the opening / closing machine 13, the winding shaft 12 and the like are in a freely rotatable state by the operation of an automatic closing device (not shown), the opening / closing body 20 is drawn out of the winding shaft 12 by its own weight and performs a closing operation.
When the end of the opening / closing body 20 in the closing direction (specifically, the seat plate member 23) contacts the seating target portion p (for example, the floor surface, the ground, a frame member, etc.), the rigid body portion substantially simultaneously with the contact. 21. The first locking convex portion 21b1 at the lowermost end contacts the first stopper portion 41. Until this contact point, as shown in FIG. 2A, play b is secured at each connection location between the upper and lower adjacent opening / closing member constituting members 21a and 21a.

After the contact, when the unwinding of the opening / closing body 20 is continued, first, the lowermost opening / closing body constituting member 21a having the first locking convex portion 21b1 and the upper opening / closing body constituting member 21a The play b is clogged with respect to the connection portion between the two.
In this case, “the play b is clogged” means a state in which the opening / closing member constituting members 21a and 21a adjacent to each other in the vertical direction are closest to each other within the range of the play b.
Next, the play b is clogged at the connection portion between the second opening / closing member constituting member 21a from the bottom and the upper opening / closing member constituting member 21a.
Thereafter, in the same manner, b is clogged in order from the bottom for a plurality of connection locations.

  Then, the second locking projection 21b2 is connected to the second stopper portion 42 immediately before the play b is clogged at the connecting portion immediately below the opening / closing member constituting member 21a to which the second locking projection 21b2 is fixed. Abut against. Therefore, play b is ensured for the connecting portion adjacent to the lower side of the second locking projection 21b2.

  In the same manner as described above, between the second stopper portion 42 and the third stopper portion 43, play b is secured at the connecting portion adjacent to the lower side of the third stopper portion 43, and more than the connecting portion. The third locking projection 21b3 abuts against the third stopper portion 43 in a state where the play b at each of the lower connection portions is packed.

Therefore, the first stopper 41 has an opening / closing member constituting member 21a between the first engaging protrusion 21b1 and the second engaging protrusion 21b2 (in the illustrated example, the five opening / closing member constituting members 21a). ) Only weight is added.
Similarly, the second stopper portion 42 has an opening / closing member constituting member 21a between the second locking projection 21b2 and the third locking projection 21b3 (in the illustrated example, five opening / closing member constituting members). Only the weight of 21a) is added.
Further, with respect to the third stopper portion 43, in the opening / closing member constituting member 21a above the third locking convex portion 21b3, a portion other than the portion remaining on the winding shaft 12 (discarded winding portion). Will add weight.

Therefore, according to the opening / closing device 1 configured as described above, it is possible to prevent the load due to the contact with the stopper portion from being concentrated on the lowermost end side of the rigid body portion 21.
That is, the load received by the opening / closing body 20 from the receiving member 40 when fully closed can be distributed to the rigid body portion 21 where the plurality of locking projections 21b1, 21b2, 21b3 are provided.
In addition, the compression load in the opening and closing direction can be released by play b between the locking projections 21b1 and 21b2 (or between 21b2 and 21b3).
As a result, it is possible to prevent the load from being concentrated on the lowermost end side of the rigid body portion 21 when fully closed, and the opening / closing member constituting member 21a on the lowermost end side of the rigid body portion 21 from being deformed or damaged.

  In addition, according to the said opening / closing apparatus 1, although the some stopper part 41,42,43 was comprised as an integral member (receiving member 40), as another example, the some stopper part 41,42,43 is each set. It may be a separate member. In this case, each stopper part 41 (or 42, 43) may be an upper end part of a long member extending in the vertical direction, or may be a member partially disposed in the vertical direction.

  In addition, according to the opening / closing device 1, the receiving member 40 having the stopper portions 41 (or 42, 43) is fixed to the guide rail 30, but the receiving member 40 is fixed to the immovable portion. What is necessary is just to be the aspect fixed to the housing etc. which become the installation object of the seating object site | part p, the storage case 11, and the said opening / closing apparatus 1, for example.

  Moreover, according to the said opening / closing apparatus 1, although it was set as the structure which fixes the separate latching convex part 21b1 (or 21b2, 21b3) with respect to the opening / closing body structural member 21a, as another example, some opening / closing bodies The dimension of the opening / closing body width direction of the component member 21a is made longer than that of the other opening / closing body component member 21a, and the width direction end of this part of the opening / closing body component member 21a is the width direction end of the other opening / closing body component member 21a. By projecting more than this, it is also possible to make this projecting portion the locking projection.

Moreover, in the said opening / closing apparatus 1, although each latching convex part 21b1 (or 21b2, 21b3) was comprised so that the protrusion dimension of the opening-and-closing body width direction might differ, these latching convex parts do not open and close the opening / closing body. Any configuration may be used as long as it is received at a plurality of locations extending in the direction. For example, as shown in FIGS. 3A to 3B, the plurality of locking projections may be configured to have different protruding directions.
In the aspect shown in FIG. 3, among the plurality (three in the illustrated example) of the locking projections provided at predetermined intervals in the vertical direction of the rigid body portion 21, the lowest locking projection 21 c 1 is the lowest. Has a shape in which the tip side is bent into an L-shaped cross section, and the tip side is directed to one side (in the illustrated example, the slat back side) in the opening / closing body thickness direction.
The uppermost third locking projection 21c3 has a shape in which the tip side is bent in an L-shaped cross section, and the tip side is the other in the opening / closing body thickness direction (according to the illustrated example, the slat surface side). )
Further, the second locking projection 21c2 positioned between the first locking projection 21c1 and the third locking projection 21c3 has an opening / closing body configuration with its tip side directed in the opening / closing body width direction. It protrudes from the end in the width direction of the member 21a.
In addition, a first stopper portion 41 ′, a second stopper portion 42 ′, and a third stopper portion 43 ′ are arranged so as to receive the respective leading ends of the locking convex portions 21c1, 21c2, and 21c3. Yes.
Thus, according to the embodiment shown in FIG. 3, a space in the opening / closing body width direction is not required by the plurality of locking projections 21 c 1, 21 c 2, 21 c 3. The depth dimension can be made relatively small.

  Further, as a configuration added to the above-described embodiment, the sensor detects that the end of the opening / closing body 20 in contact with the obstacle is in contact with the obstacle, and stops the closing operation of the opening / closing body 20 according to the detection signal. It may be.

  Moreover, in the said embodiment, although the said rigid body part 21 was set as the aspect connected so that the some opening-and-closing body structural member 21a (specifically slat) had the play b of an up-down direction, this rigid body part 21 As another example, it is also possible to adopt a mode in which a plurality of panels or pipes, combinations thereof, or the like are connected so as to have play b in the vertical direction.

  Moreover, according to the said embodiment, although the lower part side of the opening / closing body 20 is comprised by the flexible sheet | seat part 22, as an other example, the flexible sheet | seat part 22 is omitted and the lower part of the opening / closing body 20 is comprised. It is also possible to configure the side with a rigid part 21 similar to the upper side.

Moreover, although the said embodiment is one aspect | mode of what is called a slat shutter apparatus which comprised the some slat and comprised the opening / closing body 20, as another example, the panel which comprised the some panel and comprised the opening / closing body It is also possible to apply to a shutter device.
That is, in the conventional panel shutter device, at the time of the closing operation, the lowermost panel is first seated, and the next panel is seated on the panel, and this operation is repeated until the panel is fully closed. Therefore, the load is concentrated on the lowermost panel.
However, if the opening / closing body composed of a plurality of panels is received by a plurality of stopper portions extending in the vertical direction as in the above-described embodiment, the load can be dispersed, and consequently the panel on the lowermost end side. Can be prevented from being deformed or damaged.

As another example, the flexible sheet portion 22 can be replaced with other non-rigid curtain-shaped members. As an example thereof, there is a curtain-like one in which a flexible band-like body or string-like body is suspended and connected.
As another example, the flexible sheet portion 22 may be replaced with a water curtain, a mist curtain, an air curtain, or the like formed by an apparatus provided on the rigid body portion 21, or may be configured to include the curtain. Is also possible.

It is a front view which shows an example of the switchgear concerning this invention, and has shown the principal part notched. It is a schematic diagram which shows the longitudinal cross-section of the same opening / closing apparatus, (a) shows the state immediately after the opening-and-closing body fully closed and the 1st latching convex part contact | abutted to the 1st stopper part, (b) Shows a state in which the first locking projection is in contact with the first stopper and the second locking projection is in contact with the second stopper. It is a perspective view which shows the other example of a latching convex part and a stopper part in each of (a)-(c).

Explanation of symbols

1: Opening / closing device 20: Opening / closing body 21: Rigid body portion 21a: Opening / closing body constituent member 21b1: First locking projection 21b2: Second locking projection 21b3: Third locking projection 22: Flexible Seat part 30: Guide rail 40: Receiving member 41: First stopper part 42: Second stopper part 43: Third stopper part b: Play p: Seating target part

Claims (5)

In the opening and closing device which is received from the stopper portion fixed to the immovable part and stopped by the opening and closing body which is drawn out from the storage portion and closes downward,
An opening / closing apparatus characterized in that the stopper portion is provided at a plurality of locations in the vertical direction, and a plurality of portions of the opening / closing body are received by the plurality of stopper portions.   The opening / closing body is provided with a plurality of locking projections protruding in a direction crossing the closing direction, and each of the plurality of locking projections is received by each of the plurality of stopper portions. The switchgear according to claim 1. At least a part of the opening / closing body is constituted by three or more opening / closing body constituting members connected vertically, and the other opening / closing body constituting member is connected to the other opening / closing body constituting member at the connection position of the other opening / closing body constituting member. A play is provided to allow the opening / closing member constituent member to move in the vertical direction,
As the plurality of locking projections, comprising a first locking projection and a second locking projection that are arranged one above the other with one or more of the opening / closing member constituting members interposed therebetween,
An opening / closing apparatus comprising a first stopper portion for receiving the first locking projection and a second stopper portion for receiving the second locking projection as the plurality of stopper portions. And
The first locking projection is received by the first stopper portion, and at least the second locking projection is fixed in a state where the second locking projection is received by the second stopper portion. The first stopper portion and the second stopper portion are secured so that the play is secured at a connection place between the opened opening / closing member constituting member and the opening / closing body constituting member adjacent to the lower side, and the play is blocked at other connection places. The opening / closing device according to claim 2, wherein a distance from the stopper portion is set. The first locking projection is fixed in a state where the first locking projection is received by the first stopper and the second locking projection is received by the second stopper. The distance between the opening / closing member constituting member and the opening / closing member constituting member to which the second locking projection is fixed is
An arrangement pitch of the opening / closing member constituting members is a,
Let b be the play dimension of the connecting portion of the adjacent upper and lower opening / closing member constituent members,
When the number of the opening / closing member constituting member from the opening / closing member constituting member to which the first locking projection is fixed to the opening / closing member forming member to which the second locking protrusion is fixed is n,
The switchgear according to claim 3, wherein the switchgear is calculated by an expression of a × (n−1) + b.   When the upper part of the opening / closing body is constituted by a rigid body part, the lower part of the opening / closing body is constituted by a flexible sheet part, and when the flexible sheet part comes into contact with the seating target part and is fully closed 5. The opening / closing device according to claim 1, wherein the rigid body portion is received by the plurality of stopper portions to stop the closing operation of the opening / closing body.

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