JP2021071006A - Opening and closing device - Google Patents

Abstract

To provide an opening and closing device capable of preventing left and right ends of a shutter curtain from falling off a guide rail when a force is applied to a back of the shutter curtain and the shutter curtain is bent forward.SOLUTION: An opening and closing device according to the present invention comprises; an opening and closing body (shutter curtain) which opens and closes an opening; guide means (guide rail 5), located at both end sides in a left-right width direction of the opening, which guides the opening and closing body so that it can move in an open-close direction while holding both ends in the width direction of the opening and closing body; and a lower frame 6 which is placed at a lower side of the opening. The opening and closing device also comprises a lower-frame-side engaging part 8X which is provided at the lower frame 6, and opening-and-closing-body-side engaging means 11X which is provided at at least a part of a whole area in the left-right width direction of a lower end 7 of the opening and closing body in such a manner that it can engage with the lower-frame-side engaging part 8X.SELECTED DRAWING: Figure 2

Description

The present invention relates to a switchgear, particularly an engaging structure between a lower end of a switchgear opening and closing body and a lower frame.

In a shutter device called a window shutter, for example, as an opening / closing device, a shutter curtain as an opening / closing body for opening / closing an opening formed on the outside of the window is movable in the opening / closing direction (vertical direction). The left and right end sides of the shutter curtain are movably held by guide rails as guiding means (see Patent Document 1).
That is, in the window shutter, the shutter case installed above the outside of the window, the left and right guide rails, and the opening surrounded by the lower frame are configured to be opened and closed by the shutter curtain.
For example, in the shutter device shown in FIG. 10A, the lower end portion 7 of the shutter curtain 4 comes into contact with the front position side of the inner bottom surface of the lower plate 61 of the lower frame 6 in a state where the shutter curtain 4 closes the opening. A shutter is provided.
The shielding portion includes a shielding plate 76 that extends in the vertical direction and is provided so as to be continuous between the left and right guide rails 5 and 5, and a groove 9 provided on the lower end edge side of the shielding plate 76. The groove 9 is a folded plate portion and a shielding plate composed of a groove bottom plate 9a extending forward (outdoor side) from the lower end edge of the shielding plate 76 and a groove front plate 9b extending upward from the front end edge of the groove bottom plate 9a. It is a groove surrounded by the lower end of 76, and is a groove having a hook-like cross section with a long upper opening extending between the left and right guide rails 5 and 5.
Further, the lower frame 6 continuous between the lower ends of the left and right guide rails 5 and 5 is provided with a front rising plate 63 extending upward from the front end edge of the lower plate 61, and the upper end of the front rising plate 63 is provided. A groove 8 is formed on the edge side. The groove 8 is a folded-back plate portion and a front side composed of a groove bottom plate 8a extending rearward (indoor side) from the upper end edge of the front rising plate 63 and a groove rear plate 8b extending downward from the front end edge of the groove bottom plate 8a. It is a groove surrounded by the upper end portion of the rising plate 63, and is a hook-shaped groove having a long lower opening extending between the lower ends of the left and right guide rails 5 and 5.
When the lower end portion 7 of the shutter curtain 4 closes the opening, the groove front plate 9b of the groove 9 is configured to be positioned behind the groove rear plate 8b of the groove 8 of the lower frame 6. To.
Further, for example, in the shutter device shown in FIG. 11A, the lower frame 6X continuous between the lower ends of the left and right guide rails 5 and 5 has a front rising plate that rises above the front end edge of the upper plate portion 61A. It includes 64X and a lower plate 6C located below the upper plate portion 61A and having a front end edge 6F located in front of the front rising plate 64X.
Further, at the lower end portion 7X of the shutter curtain 4, the upper shielding plate 77A that comes into contact with the upper end edge of the front rising plate 64X and the upper shielding plate 77A that comes into contact with the upper end edge of the front rising plate 64X when the shutter curtain 4 has the opening closed, and below the rear end edge of the upper shielding plate 77A. The rear side falling plate 78X whose plate surface is extended to face the plate surface of the front side rising plate 64X, the front side shielding plate 76A extending below the front end edge of the upper side shielding plate 77A, and the lower end of the front side shielding plate 76A. It is equipped with a drain 79A that extends diagonally forward from the edge.
When the lower end 7X of the shutter curtain 4 closes the opening, the rear rising plate 78X is configured to be positioned behind the front rising plate 64X of the lower frame 6X.
In the cross-sectional views of FIGS. 10 and 11, the hatching of the lower frames 6 and 6X and the lower end portions 7 and 7X of the shutter curtain 4 is omitted.

Japanese Unexamined Patent Publication No. 2014-80760

However, according to the shutter device shown in FIG. 10A, as shown in FIG. 10B, the pressure of the wind entering the rear side (indoor side) of the shutter curtain 4 in a strong wind, the pressure in the event of a fire, etc. When the force F of the shutter curtain 4 is applied to the rear surface (indoor side surface) 4R, the shutter curtain 4 bends and is centered on the left and right width directions of the shutter curtain 4 (hereinafter, "width"). The "center side of the direction") is transformed to the front side (outdoor side).
That is, when both the left and right end portions 4a and 4a (see FIG. 12) of the shutter curtain 4 are held by the guide rails 5 and 5, the central side in the width direction of the shutter curtain 4 bends, so that when viewed from above. As shown in FIG. 12, the center side of the groove front plate 9b of the shutter curtain 4 in the width direction is curved forward, whereas the groove rear plate 8b of the lower frame 6 is linear between the left and right guide rails 5 and 5. Located in.
In FIG. 12, A indicates the engagement relationship between the lower end portion 7 of the shutter curtain 4 in the width direction and the lower frame 6, and B indicates the engagement relationship between the lower end portion 7 of the shutter curtain 4 in the width direction and the end portion. The engagement relationship between the left and right portions and the lower frame 6 is shown, and C shows the engagement relationship between the left and right ends 7 of the lower end portion 7 of the shutter curtain 4 and the lower frame 6.
That is, the upper end surface 9t of the groove front plate 9b of the shutter curtain 4 and the lower end surface 8t of the groove rear plate 8b of the lower frame 6 located above the upper end surface 9t of the groove front plate 9b of the shutter curtain 4 intersect. At the intersecting portion, the upper end surface 9t of the groove front plate 9b and the lower end surface 8t of the groove rear plate 8b come into contact with each other. Therefore, as shown in FIG. 12, the groove front plate 9b of the shutter curtain 4 is attached to the lower frame 6. It does not enter the groove 8 and the groove front plate 9b does not get caught in the groove rear plate 8b. Even if the groove front plate 9b of the shutter curtain 4 temporarily enters the groove 8 of the lower frame 6 and the groove front plate 9b is caught by the groove rear plate 8b, it will eventually come off.
Therefore, as shown in FIG. 10B, a force F is applied to the rear surface 4R of the shutter curtain 4, and the groove front plate 9b of the lower end portion 7 of the shutter curtain 4 and the groove rear plate 8b of the lower frame 6 engage with each other. If the amount of bending of the shutter curtain 4 becomes large in the state where the shutter curtain 4 is not used, the left and right ends of the shutter curtain 4 may come off (disengage) from the guide grooves 5a and 5a of the guide rails 5 and 5.
Similarly, as shown in FIG. 11B, the shutter device shown in FIG. 11A also receives a force F on the rear surface 4R of the shutter curtain 4 to stand on the rear side of the lower end portion 7X of the shutter curtain 4. When the amount of deflection of the shutter curtain 4 increases when the down plate 78X and the front rising plate 64X of the lower frame 6X are not engaged, the left and right ends 4a and 4a of the shutter curtain 4 guide the guide rails 5 and 5. There is a risk that the grooves 5a and 5a will come off.

In the present invention, in order to solve the above problems, when a force is applied to the rear surface (indoor side surface) of the shutter curtain (switchgear) and the shutter curtain bends forward (outdoor side), the left and right ends of the shutter curtain Provided is an opening / closing device capable of preventing a situation in which a vehicle comes off from a guide rail (guidance means).

The opening / closing device according to the present invention moves the opening / closing body in the opening / closing direction while holding the opening / closing body that opens / closes the opening and both ends of the opening / closing body in the width direction. In an opening / closing device provided with a guiding means for guiding as possible and a lower frame installed on the lower side of the opening, the lower frame side engaging portion provided on the lower frame and the lower frame side engaging portion are engaged with each other. The opening / closing body side engaging means provided in at least a part of the entire left and right width direction regions of the lower end portion of the opening / closing body is provided so as to be compatible.
Further, the opening / closing body side engaging means is provided only on the central side in the width direction of the lower end portion of the opening / closing body.
Further, the lower frame side engaging portion and the opening / closing body side engaging means are formed by engaging plates that can be engaged with each other, and the engaging plates constituting the lower frame side engaging portion are provided on the lower frame and extend vertically. The lower end of the plate is formed by the groove rear plate of the groove of the lower opening provided on the upper end side of the plate, and the engaging plate constituting the opening / closing body side engaging means is provided at the lower end of the opening / closing body and extends vertically. It was formed by the groove front plate of the groove of the upper opening provided on the side.
Further, the lower frame side engaging portion and the opening / closing body side engaging means are formed by an engaging hole and an engaging piece that can be engaged with each other, and the lower frame side engaging portion is provided on the lower frame and is provided up and down. It is formed by an engaging hole that penetrates the outdoor side plate surface and the indoor side plate surface of the extending plate, and the opening / closing body side engaging means is provided at the lower end of the opening / closing body so that the engaging hole can be engaged from the indoor side. The lower frame side engaging portion is formed by the engaging pieces configured in the above frame, or the lower frame side engaging portion is formed by the engaging pieces protruding indoor from the indoor side plate surface of the plate provided on the lower frame and extending vertically. In addition, the opening / closing body side engaging means is configured to penetrate the outdoor side plate surface and the indoor side plate surface of the plate which is located on the indoor side of the lower frame plate and extends vertically so that the engaging piece can be engaged. It was formed by the engaging holes.
According to the opening / closing device according to the present invention, when a force is applied to the rear surface (indoor side surface) of the opening / closing body (shutter curtain) and the opening / closing body bends forward (outdoor side), the opening / closing body side engaging means is the lower frame. Since it engages with the side engaging portion, it is possible to prevent a situation in which the left and right ends of the opening / closing body come off from the guide means (guide rail).

FIG. 3 is a perspective view showing a window shutter as an example of a shutter device (Embodiment 1). FIG. 5 is a cross-sectional view showing the relationship between the lower end portion of the shutter curtain and the lower frame (Embodiment 1). An exploded sectional view (Embodiment 1) showing the lower end portion, the lower frame, and the engaging member of the shutter curtain in an exploded manner. The plan view which shows the installation position of the engaging member (the first embodiment). FIG. 5 is a cross-sectional view (Embodiment 1) showing an engaged state between the lower end portion of the shutter curtain and the lower frame. FIG. 2 is a cross-sectional view showing the relationship between the lower end portion of the shutter curtain and the lower frame (Embodiment 2). FIG. 2 is an exploded cross-sectional view (Embodiment 2) showing the lower end portion, the lower frame, and the engaging member of the shutter curtain in an exploded manner. The rear view which shows the installation position of the engaging member and the position of the engaging hole (the second embodiment). FIG. 2 is a cross-sectional view (Embodiment 2) showing an engaged state between the lower end portion of the shutter curtain and the lower frame. A cross-sectional view showing the relationship between the lower end of a conventional shutter curtain and the lower frame. A cross-sectional view showing the relationship between the lower end of a conventional shutter curtain and the lower frame. Explanatory drawing which shows the relationship between the lower end part of a conventional shutter curtain and a lower frame.

Embodiment 1
A shutter device as an example of the opening / closing device according to the first embodiment will be described with reference to FIGS. 1 to 5.
As shown in FIG. 1, the shutter device 1 as an example of the opening / closing device according to the first embodiment includes an opening / closing body accommodating case 2 (hereinafter referred to as “case 2”), an opening / closing mechanism 3 provided in the case 2. A shutter curtain 4 as an opening / closing body that is attached to a winding portion 30 such as a winding shaft of the opening / closing mechanism 3 so as to be windable and manipulable to open and close the opening, and a shutter curtain 4 in the opening / closing direction (up and down in FIG. 1). It is provided with left and right guide rails 5 and 5 and a lower frame 6 as guide means for movably guiding in the direction). The shutter device 1 is formed of, for example, a metal plate such as an aluminum plate.
For example, when the shutter device 1 is a window shutter as shown in FIG. 1 provided on the outside of a window of a building, it is provided above the outside of a frame 15 such as a sash frame surrounding an opening such as a window. The opening 17 surrounded by the left and right guide rails 5 and 5 provided on the left and right outside the case 2 and the frame 15 and the lower frame 6 provided below the outside of the frame 15 can be opened and closed by the shutter curtain 4. It is configured as follows.
The case 2, the left and right guide rails 5, 5, and the lower frame 6 are directly attached to the building skeleton 16 by using fixing means such as screws, or are attached to the building skeleton 16 via the attachment member 18.
Further, when the shutter device 1 is a shutter provided at an entrance / exit of a building such as a garage or a warehouse, the opening of the entrance / exit or the like is configured to be opened and closed by a shutter curtain.
In this specification, the upper, lower, left, right, front side (outdoor side), and rear (indoor side) of the shutter device 1 are defined as the directions shown in FIG. 1 and the like.
Further, in the cross-sectional views of FIGS. 2 and 5 and FIGS. 6 and 9 of the second embodiment, hatching of parts other than the engaging members 10 and 10A is omitted in order to clearly show the positions of the engaging members 10 and 10A. did.

The case 2 is configured to rotatably accommodate the take-up portion 30 for winding the shutter curtain 4, and to form an accommodating space for accommodating the shutter curtain 4 to be wound around the take-up portion 30.
The case 2 includes, for example, an upper front cover 21 that covers the upper side and the front of the winding portion 30, and left and right shaft supporting portions attached to the building frame 16 to support the left and right ends of the winding portion 30. The brackets 22 and 22 and the lower cover 23 that covers the lower part of the take-up portion 30 are provided. For example, the upper front cover 21 and the left and right end sides of the lower cover 23 are connected to the left and right brackets 22 and 22.
The lower cover 23 is formed with an outlet (not shown) of the shutter curtain 4.

The opening / closing mechanism 3 includes a winding portion 30 such as a winding shaft for winding the shutter curtain 4, and an opening / closing driving means (not shown) for rotating the winding portion 30.
In the case of an electric shutter device, the opening / closing drive means is a gear transmission that transmits the rotational force of the electric motor as an unexpected drive source for rotating the take-up portion 30 in the take-up direction and the take-out direction to the take-up portion 30. In the case of a manual shutter device, which is composed of a power transmission mechanism such as a mechanism, a spring (not shown) that rotates the winding unit 30 in the winding direction and the rotational force stored in the spring are transmitted to the winding unit 30. It is composed of power transmission means and the like.
Both ends of the take-up portion 30 are rotatably supported by bearings (not shown) provided on the left and right brackets 22 and 22 of the case 2, and the direction in which the shutter curtain 4 is taken up and the direction in which the shutter curtain 4 is unwound. Rotate in (winding direction).

The shutter curtain 4 attached to the take-up portion 30 so as to open and close the opening 17 so as to be retractable and manipulable includes a slat portion 41, a lower end portion 7 called a skirting board, a seat plate, etc. It is configured with an outside hanging source.
The slat portion 41 is formed by a plurality of slat members 45, 45 ... The slat member 45 is formed of a long member that is long in the direction along the rotation center line 3a of the winding portion 30.
In the slat portion 41, adjacent slat members 45, 45 are adjacent to each other so that the plurality of slat members 45, 45 ... Are continuous in a direction orthogonal to the longitudinal direction of the slat member 45 (direction along the long side of the slat member 45). The long sides are connected to each other by engaging portions 45a and 45a (see FIG. 2) so that the positions of both ends in the longitudinal direction of the above are aligned, and the long sides are formed into a rectangular plate shape that can be bent at the connecting portion.
In FIG. 1, since the appearance of the winding portion 30 is shown, the hanging source is not shown, but the hanging source is, for example, along the long side of the slat member 45 located at the upper end (one end) of the slat portion 41. It is a connecting plate intermittently provided on the long side, and is connected to the winding portion 30.
The lower end 7 of the shutter curtain 4 will be described later.

The left and right guide rails 5 and 5 are arranged on both left and right widthwise ends of the opening 17 and are provided so as to be located on the left and right outside of the frame 15, and the left and right widthwise both ends 4a and 4a of the shutter curtain 4 are provided. It is a member for guiding the shutter curtain 4 so as to be movable in the opening / closing direction while holding the shutter curtain 4.
That is, the left and right guide rails 5 and 5 are provided at the left end and the right end of the opening 17 so as to be separated from each other in the left and right directions (width direction) with respect to the center of the rectangle of the opening 17, respectively. A guide groove 5a extending in the vertical direction of 17 is provided.
That is, the left and right widthwise end portions 4a, 4a of the shutter curtain 4 can be moved in the opening / closing direction while being inserted and held in the opposite guide grooves 5a, 5a of the left and right guide rails 5, 5. As a result, the shutter curtain 4 is guided by the guide rails 5 and 5 in the opening / closing direction to open / close the opening 17.

The lower frame 6 is provided so as to be continuous in a straight line on the left and right over the lower ends of the left and right guide rails 5 and 5.
As shown in FIGS. 2 and 3, the lower frame 6 extends between the lower ends of the left and right guide rails 5 and 5 on the left and right, and the front and rear are between the outer wall surface 19 of the building and the front surface 5f of the guide rail 5. A lower plate 61 provided so as to extend over the lower plate 61, a rear rising plate 62 rising above the rear end edge of the lower plate 61, a front rising plate 63 rising above the front end edge of the lower plate 61, and a front side. A central rising plate that rises upward from a position on the lower plate 61 that intersects the groove 8 provided on the upper end side of the rising plate 63 and the extension line 5c extending downward along the rear opening edge 5b of the guide groove 5a. 64 and the rear inclined plate formed so as to extend diagonally upward and rearward from the upper end edge side of the central rising plate 64 to reach the rear rising plate 62 and be integrated with the rear rising plate 62. It is equipped with 65.

That is, the lower frame 6 is a cross-sectional table that is surrounded by the lower plate 61, the rear rising plate 62, the central rising plate 64, and the rear inclined plate 65 and extends between the lower ends of the left and right guide rails 5 and 5. A hollow space 66 having a shape is provided.
Further, the inclined surface 65a formed by the upper surface of the rear inclined plate 65 and inclined downward from the rear side toward the upper end edge of the central side rising plate 64 from the rear rising plate 62 side is, for example, the rear rising plate 65a. The center side rise located on the front surface 62a of the plate 62 at a position corresponding to approximately 1/2 the height of the rear rising plate 62 and at a height of approximately 1/4 the height of the rear rising plate 62. It is formed on an inclined surface connecting the upper end edge of the plate 64.
The angle between the plate surface of the lower frame 6 and the plate surface of the rear rising plate 62 and the angle formed by the plate surface of the lower frame 6 and the plate surface of the rear rising plate 62 are set to, for example, 90 °. Will be done.

The groove 8 is a folded-back plate portion and a front rising plate 63 composed of a groove bottom plate 8a extending rearward from the upper end edge of the front rising plate 63 and a groove rear plate 8b extending downward from the rear end edge of the groove bottom plate 8a. It is a groove surrounded by the upper end portion of the rail, and is a hook-shaped groove having a long lower opening extending between the lower ends of the left and right guide rails 5 and 5.
The groove rear plate 8b of the groove 8 of the lower opening functions as an engaging plate constituting the lower frame side engaging portion 8X.

As shown in FIG. 3, the lower end portion 7 of the shutter curtain 4 has a substrate 71 whose left and right sides extend between the left and right guide rails 5 and 5 and extends in the vertical direction, and rearward from the upper end edge of the substrate 71. An upper reinforcing plate 72 provided so as to project, a connecting portion 73 formed in a hook shape with a cross section extending upward from the rear end edge of the upper reinforcing plate 72 and then extending forward and further downward, and a substrate. A lower reinforcing plate 74 provided so as to project rearward from the lower end edge of the 71, and a plurality of intermediate reinforcing plates 75, 75 ... Protruding rearward from a plurality of locations between the upper and lower sides of the substrate 71. , A shielding plate 76 extending below the rear end edge of the lower reinforcing plate 74, a lower end groove 9 provided on the lower end side of the shielding plate 76, and a rear lower plate 77 extending rearward from the upper end edge side of the shielding plate 76. A light-shielding plate 78 extending in the vertical direction from the rear end edge side of the rear lower plate 77, a front lower plate 71a provided so as to project from the lower end side of the substrate 71 to the front side, and a front end edge of the front lower plate 71a. A front plate 71b extending upward, a front upper plate 71c extending rearward from the upper end edge of the front plate 71b and reaching the upper end side of the substrate 71 so as to be integrated with the substrate 71, and a front side. A drain plate 79 extending downward from the front end side of the lower plate 71a and facing the front surface 63a of the front rising plate 63 of the lower frame 6 at a distance when the shutter curtain 4 closes the opening is provided. ..

Then, the lower end (the other end) of the slat portion 41 is connected to the connecting portion 73 to form the shutter curtain 4.
For example, the angle between the plate surface of the substrate 71 and the plate surface of the front lower plate 71a, the angle between the plate surface of the substrate 71 and the plate surface of the lower reinforcing plate 74, the plate surface of the substrate 71 and the rear lower plate 77. The angle between the front lower plate 71a and the drain plate 79 is the angle between the front lower plate 71a and the drain plate 79, and the angle between the rear lower plate 77 and the shielding plate 76 is, for example. It is set to 90 °.

The lower end side groove 9 is, for example, a folded plate portion composed of a groove bottom plate 9a extending forward from the lower end edge of the shielding plate 76 and a groove front plate 9b extending upward from the front end edge of the groove bottom plate 9a, and the lower end of the shielding plate 76. It is a groove surrounded by a portion, and is a groove having a hook-like cross section with a long upper opening extending between the lower ends of the left and right guide rails 5 and 5.

As shown in FIG. 4, the engaging member 10 having the opening / closing body side engaging means 11X corresponds to the width direction length 4WC of the central portion between the left and right widths 4W of the lower end side groove 9 in the lower end portion 7 of the shutter curtain 4. It is a long member having a length in the long direction.
The lower end portion 7 of the shutter curtain 4 is provided with the engaging member 10 by a mounting means such as a screw 12 so that the left and right lengths of the engaging member 10 are the same centered on the left and right center 4C of the left and right width 4W of the lower end side groove 9. It is attached to the front lower plate 71a of.
The width direction length 4WC of the engaging member 10 is set to, for example, about 1/3 to 1/4 of the left-right width 4W of the lower end side groove 9.

As shown in FIG. 3, the engaging member 10 extends rearward from the mounting plate 10a, the central falling plate 10b extending downward from the rear end edge of the mounting plate 10a, and the lower end edge of the central falling plate 10b. A step plate 10c, a rear falling plate 10d extending downward from the rear end edge of the step plate 10c, a groove 11 formed on the lower end side of the rear falling plate 10d, and a retaining plate 10e are provided. ..
The retaining plate 10e is formed by a falling plate extending downward from the front end edge side of the lower surface 11c of the groove bottom plate 11a.

The groove 11 is a folded-back plate portion and a rear side falling portion composed of a groove bottom plate 11a extending forward from the lower end edge of the rear side falling plate 10d and a groove front plate 11b extending upward from the front end edge of the groove bottom plate 11a. A groove surrounded by the lower end of the plate 10d, the length of which is the upper opening and along the width direction of the shutter curtain 4 is the center between the left and right widths 4W of the lower end side groove 9 in the lower end 7 of the shutter curtain 4. It is a groove having a long cross-sectional hook shape formed in a portion having a length of 4WC in the width direction.

As shown in FIG. 2, the retaining member 10e is inserted into the lower end groove 9 so as to face the front surface 10f of the retaining member 10e and the inner surface 9d of the groove front plate 9b of the lower end groove 9. At the same time, in a state where the upper surface of the mounting plate 10a of the engaging member 10 is in contact with the lower surface 71e of the front lower plate 71a at the lower end portion 7, a screw 12 such as a screw screw is inserted into the mounting hole 12a formed in the mounting plate 10a. It is passed through and fastened to the fastening hole 12b formed in the front lower plate 71a.
As a result, the mounting plate 10a of the engaging member 10 contacts the lower surface 71e of the front lower plate 71a, and the rear surface of the central falling plate 10b of the engaging member 10 contacts the front surface 71f of the lower end portion of the substrate 71 to engage. The rear surface of the rear falling plate 10d of the member 10 is in contact with the front surface 76a of the shielding plate 76, and the front surface 10f of the retaining plate 10e is in close contact with the inner surface 9d of the groove front plate 9b of the lower end side groove 9. The engaging member 10 is attached to the lower end portion 7 of the shutter curtain 4 so as to be in the state.
Then, in a state where the engaging member 10 is attached to the lower end portion 7 of the shutter curtain 4, the groove front plate 11b of the groove 11 of the upper opening of the engaging member 10 serves as an engaging plate constituting the opening / closing body side engaging means 11X. Function.

As shown in FIG. 2, when the lower end portion 7 of the shutter curtain 4 closes the opening, the groove front plate 11b of the groove 11 constituting the opening / closing body side engaging means 11X engages with the lower frame side engaging portion 8X. The groove 8 is configured to be located behind the groove rear plate 8b.
Then, as shown in FIG. 5, when a force F is applied to the rear surface 4R of the shutter curtain 4 and the central side in the width direction of the shutter curtain 4 bends forward, the groove front plate 11b constituting the opening / closing body side engaging means 11X is formed. Is configured to move diagonally upward and forward into the groove 8 and be hooked on the groove rear plate 8b constituting the lower frame side engaging portion 8X.
In this case, on the lower end side of the shielding plate 76, the portion of the lower end side groove 9 located below the lower end surface 8u of the groove rear plate 8b is the left and right guide rails 5 and 5 from the left and right end sides of the engaging member 10. The opening / closing body side engaging means 11X provided only on the center side in the width direction of the lower end portion 7 of the shutter curtain 4 is maintained in a state of being engaged with the lower frame side engaging portion 8X.

That is, the engaging member 10 is detachably attached to the center side in the width direction of the lower end portion 7 of the shutter curtain 4, and the center in the width direction of the shutter curtain 4 in a state where both ends are supported by the left and right guide rails 5 and 5. When the side is bent forward, the entire left and right width directions of the groove front plate 11b constituting the opening / closing body side engaging means 11X enter into the groove 8 of the lower frame 6 and the groove concerned. It is configured to be hooked and engaged with the groove rear plate 8b of No. 8.

In other words, the engaging member 10 is attached to the lower end portion 7 separately from the lower end portion 7 of the shutter curtain 4, and the left and right end sides are not constrained by the left and right guide rails 5 and 5. Therefore, it is hard to deform (hard to bend).
Therefore, as shown in FIG. 5, when the central side of the shutter curtain 4 in the width direction bends forward, the groove front plate 11b constituting the opening / closing body side engaging means 11X enters the groove 8 of the lower frame 6 and is said to be the same. It becomes easy to engage with the groove rear plate 8b of the groove 8 of the above.
Therefore, when a force F is applied to the rear surface 4R of the shutter curtain 4 and the center side of the shutter curtain 4 in the width direction bends forward, the left and right end portions 4a and 4a of the shutter curtain 4 are the guide grooves of the guide rails 5 and 5. It is possible to prevent a situation in which the 5a and 5a are pulled out.

According to the shutter device 1 of the first embodiment, the lower frame side engaging portion 8X provided on the lower frame 6 and the left and right lower end portions 7 of the shutter curtain 4 so as to be engaged with the lower frame side engaging portion 8X. The opening / closing body side engaging means 11X provided only on the central side of the width direction region of the lower frame side, and the lower frame side engaging portion 8X and the opening / closing body side engaging means 11X are composed of engaging plates that can be engaged with each other. The engaging plate constituting the frame-side engaging portion 8X is formed by the groove rear plate 8b of the groove 8 of the lower opening provided on the upper end side of the front rising plate 63 which is a plate provided in the lower frame 6 and extends vertically. At the same time, the engaging plate constituting the opening / closing body side engaging means 11X is provided at the lower end portion 7 of the shutter curtain 4 and is an upper opening provided at the lower end side of the rear side falling plate 10d which is a plate extending vertically. The structure was formed by the groove front plate 11b of the groove 11.
According to the configuration of the shutter device 1 of the first embodiment, when a force is applied to the rear surface 4R of the shutter curtain 4 and the central side of the shutter curtain 4 in the width direction bends and moves to the front side, the opening / closing body side engaging means of the shutter curtain 4 Because the groove front plate 11b constituting 11X enters the groove 8 of the lower opening provided in the lower frame 6 and is caught and engaged with the groove rear plate 8b of the groove 8 forming the lower frame side engaging portion 8X. , It becomes possible to prevent a situation in which the left and right end portions 4a, 4a of the shutter curtain 4 come off from the guide grooves 5a, 5a of the guide rails 5, 5.

Embodiment 2
The shutter device 1 according to the second embodiment will be described with reference to FIGS. 6 to 9.
The shutter device 1 of the second embodiment includes a lower frame 6A, a lower end portion 7A of the shutter curtain 4, and an engaging member 10A, similarly to the shutter device 1 of the first embodiment.

The lower frame 6A provided so as to be continuous over the lower ends of the left and right guide rails 5 and 5 includes a substrate 6B and a lower plate 6C as shown in FIGS. 6 and 7.
The substrate 6B has an upper plate portion 61A in which the front end edge 61B is located slightly behind the rear surface 5r of the guide rail 5 and the rear end edge 61C is located in front of the outer wall surface 19, and the rear end of the upper plate portion 61A. An inclined plate portion 62A that inclines downward from the edge 61C toward the outer wall surface 19, a lower plate portion 63A that extends toward the outer wall surface 19 behind the lower end edge of the inclined plate portion 62A, and a front end edge of the upper plate portion 61A. The front rising plate 64A that rises above 61B, the rear rising plate 65A that rises above the upper surface located behind the front end edge 61B of the upper plate portion 61A, and the rear rising plate 65A extending rearward from the upper end edge of the rear rising plate 65A. It is configured to include a mounting plate 66A mounted on the front end receiving plate 15b of the lower frame 15a of the frame 15.
The lower plate 6C projects forward from the upper end side of the front surface 62B of the inclined plate portion 62A, the front end edge 6F extends to a position substantially the same as the position of the front surface 5f of the guide rail 5, and the plate surface 6D is the plate of the upper plate portion 61A. It is provided so as to face parallel to the surface 61D.
For example, the angle between the plate surface of the upper plate portion 61A and the plate surface of the front rising plate 64A and the angle formed by the plate surface of the upper plate portion 61A and the plate surface of the rear rising plate 65A are set to, for example, 90 °. Will be done.

As shown in FIG. 8, in the central portion in the left and right width directions of the front rising plate 64A, as shown in FIG. 7, an engaging hole 64B penetrating the front surface (outdoor side plate surface) 64F and the rear surface (indoor side plate surface) 64R Is formed, and the engaging hole 64B functions as the lower frame side engaging portion 8X.
The engagement hole 64B is formed by elongated holes in the left-right direction, for example, the length in the left-right direction is formed to be slightly larger than the dimension in the left-right width direction of the groove front plate 11b described later, and the engagement hole 64B is formed in the up-down direction. Is formed to have a length slightly larger than the thickness of the groove front plate 11b, which will be described later.

As shown in FIG. 7, the lower end portion 7A of the shutter curtain 4 has a substrate 71A whose left and right sides extend between the left and right guide rails 5 and 5 and extends in the vertical direction, and from the upper end edge of the substrate 71A to the rear side. An upper reinforcing plate 72A provided so as to project, and a hook-shaped connecting portion 73A having a cross section formed so as to extend upward from the rear end of the upper reinforcing plate 72A and then extend forward and further downward. A lower reinforcing plate 74A provided so as to project from the lower end edge side of the substrate 71A to the rear side, and two intermediate reinforcing plates 75A and 75A provided so as to project rearward from a plurality of locations between the upper and lower sides of the substrate 71A. , The front shielding plate 76A extending below the rear edge of the lower reinforcing plate 74A, the upper shielding plate 77A extending rearward from the rear edge of the lower reinforcing plate 74A, and below the rear edge of the upper shielding plate 77A. A rear shielding plate 78A to be extended and a drainage 79A provided so as to extend forward from the lower end edge of the front shielding plate 76A are provided.
The drainage 79A is composed of an inclined plate 79B extending diagonally forward and downward from the lower end edge of the front shielding plate 76A, and a falling plate 79C extending downward from the lower end of the inclined plate 79B.
Then, as shown in FIG. 7, the lower end (the other end) of the slat portion 41 is connected to the connecting portion 73A to form the shutter curtain 4.
For example, the angle between the plate surface of the substrate 71A and the plate surface of the lower reinforcing plate 74A, the angle between the plate surface of the substrate 71A and the plate surface of the upper shielding plate 77A, the plate surface of the upper shielding plate 77A and the front shielding plate. The angle formed by the plate surface of the 76A and the angle formed by the plate surface of the upper shielding plate 77A and the plate surface of the rear shielding plate 78A are set to, for example, 90 °.

As shown in FIGS. 6 and 7, the engaging member 10A rises from the mounting plate 10B mounted on the upper surface of the upper shielding plate 77A at the lower end 7 of the shutter curtain 4 and the front end edge of the mounting plate 10B. The rising plate 10C provided as described above and the groove portion 11A provided on the rear end side of the mounting plate 10B are provided.
The dimensions of the engaging member 10A in the left-right width direction are formed to be, for example, about several cm.

The groove portion 11A is a folded plate portion and a mounting plate 10B composed of a groove bottom plate 11B extending downward from the rear end edge of the mounting plate 10B and a groove lower plate 11C extending forward from the lower end edge of the groove bottom plate 11B. It is a groove surrounded by the rear end portion, and is a groove having a hook-shaped cross section of the front opening.

As shown in FIG. 7, of the two intermediate reinforcing plates 75A and 75A, a stop plate 75B extending downward is provided at the rear end edge of the upper intermediate reinforcing plate 75A, and the lower intermediate reinforcing plate 75A is provided. A stop plate 75C extending upward is provided on the trailing edge.
Further, a stop plate 74B extending upward is provided at the rear end edge of the lower reinforcing plate 74A.
Then, a mounting plate 13b is installed between the upper intermediate reinforcing plate 75A and the lower intermediate reinforcing plate 75A at the central portion in the width direction on the rear surface of the substrate 71A. A fastening hole 13c is formed in the mounting plate 13b.
Further, a mounting hole 13a is formed on the upper end edge side of the rising plate 10C of the engaging member 10A.
Further, the rear shielding plate 78A of the lower end portion 7A is formed with a positioning fitting hole 78C for positioning by penetrating the groove lower plate 11C of the groove portion 11A.

Then, as shown in FIG. 6, the groove lower plate 11C of the engaging member 10A is passed through the positioning through hole 78C from the rear side of the rear shielding plate 78A of the lower end portion 7A, and the front surface of the rising plate 10C of the engaging member 10A. Is in contact with the rear surface of the stop plate 75B of the upper intermediate reinforcing plate 75A, the rear surface of the stop plate 75C of the lower intermediate reinforcing plate 75A, and the rear surface of the stop plate 74B of the lower reinforcing plate 74A, and the engaging member 10A is mounted. The lower surface of the placing plate 10B is brought into contact with the upper surface of the upper shielding plate 77A, and the front surface (groove bottom inner surface) of the groove bottom plate 11B of the engaging member 10A is set to be in contact with the rear surface of the rear shielding plate 78A.
After that, the screw 13 is inserted into the mounting hole 13a from the rear side of the rising plate 10C and fastened to the fastening hole 13c of the mounting plate 13b, so that the screw 13 is intermediate between the stop plate 75B of the upper intermediate reinforcing plate 75A and the lower side. The stop plate 75C of the reinforcing plate 75A is sandwiched between the mounting plate 13b and the rising plate 10C, and the engaging member 10A is fixedly attached to the lower end portion 7A.

The groove lower plate 11C of the engaging member 10A attached to the lower end portion 7A, that is, the groove lower plate 11C that penetrates the positioning fitting hole 78C and projects forward from the front surface of the rear shielding plate 78A is engaged on the opening / closing body side. It functions as an engaging plate constituting the combined means 11X.
When the lower end portion 7A of the shutter curtain 4 closes the opening, the groove lower plate 11C that functions as the opening / closing body side engaging means 11X is located behind the engaging hole 64B that functions as the lower frame side engaging portion 8X. It is configured to be.

In the shutter device 1 of the second embodiment configured as described above, as shown in FIG. 9, when a force F is applied to the rear surface 4R of the shutter curtain 4 and the center side in the width direction of the shutter curtain 4 bends forward. The groove lower plate 11C constituting the opening / closing body side engaging means 11X penetrates the engaging hole 64B functioning as the lower frame side engaging portion 8X and is caught in the engaging hole 64B to facilitate engagement.
Therefore, when a force F is applied to the rear surface 4R of the shutter curtain 4 and the center side of the shutter curtain 4 in the width direction bends to the front side, the left and right end portions 4a and 4a of the shutter curtain 4 are the guide grooves of the guide rails 5 and 5. It is possible to prevent a situation in which the 5a and 5a are pulled out.

According to the shutter device 1 according to the second embodiment, the lower frame side engaging portion 8X and the opening / closing body side engaging means 11X have an engaging hole 64B that can be engaged with each other and a groove lower plate 11C that functions as an engaging piece. Is formed by.
That is, the lower frame side engaging portion 8X penetrates the front surface (outdoor side plate surface) 64F and the rear surface (indoor side plate surface) 64R of the front side rising plate 64A as a plate provided on the lower frame 6A and extending vertically. In addition to being formed by the joint hole 64B, the opening / closing body side engaging means 11X is provided at the lower end 7A of the shutter curtain 4 so that it can be engaged with the engaging hole 64B from the rear (indoor side) of the front rising plate 64A. The structure was formed by a groove lower plate 11C that functions as an engaging piece.
According to the configuration of the shutter device 1 of the second embodiment, when a force F is applied to the rear surface 4R of the shutter curtain 4 and the central side of the shutter curtain 4 in the width direction bends forward, the opening / closing body side engaging means 11X is configured. The groove lower plate 11C penetrates the engaging hole 64B functioning as the lower frame side engaging portion 8X and is hooked on the engaging hole 64B to engage with the shutter curtain 4, so that the left and right end portions 4a and 4a of the shutter curtain 4 are guided rails. It becomes possible to prevent a situation in which the guide grooves 5a and 5a of the 5th and 5th are pulled out.

In the shutter device 1 according to the second embodiment described above, the lower frame side engaging portion 8X and the opening / closing body side engaging means 11X are formed by an engaging hole and an engaging piece that can be engaged with each other. The frame-side engaging portion 8X is formed by the engaging holes 64B provided in the front-side rising plate 64A, which is a plate provided in the lower frame 6A and extends vertically, and the opening / closing body-side engaging means 11X is a shutter curtain. An example is shown in which the groove lower plate 11C is provided as an engaging piece provided at the lower end portion 7A of No. 4 and is configured to be engaged with the engaging hole 64B from the indoor side. Good.
That is, the lower frame side engaging portion is formed by an engaging piece that is provided on the lower frame and projects rearward (indoor side) from the rear surface (indoor side plate surface) of the plate that extends vertically, and also engages on the opening / closing body side. The above-mentioned engaging piece penetrates the front surface (outdoor side plate surface) and the rear surface (indoor side plate surface) of the plate that is located behind the above-mentioned plate of the lower frame and extends vertically. It may be configured to be formed by engaging holes configured to be engageable.

That is, in the present invention, pressure is applied to the rear surface 4R of the shutter curtain 4 which is configured so that both left and right end sides are held by the guide rails 5 and 5 and can move in the opening / closing direction, so that the left and right center sides of the shutter curtain 4 in the width direction are moved. When the shutter curtain 4 is in the state of both ends supporting beams that bend forward, only the opening / closing body side engaging means 11X provided on the center side in the width direction of the lower end portion of the shutter curtain 4 engages with the lower frame side engaging portion 8X. Since the shutter curtain 4 is configured to fit, it is possible to prevent a situation in which the left and right end portions 4a, 4a of the shutter curtain 4 come out of the guide grooves 5a, 5a of the guide rails 5, 5.

As shown in the first and second embodiments, if the engaging members 10 and 10A separate from the lower end portion of the shutter curtain 4 are retrofitted to the lower end portions 7 and 7A, the engaging members 10 and 10A are rearly attached to the existing shutter curtain 4. This makes it possible to easily and inexpensively achieve the above-mentioned measures for removing the left and right end portions 4a and 4a of the shutter curtain 4.

Further, in the opening / closing device of the present invention, a shutter curtain having a lower end portion integrally formed with an engaging member may be used.
For example, without the engaging member 10 shown in the first embodiment, for example, a groove front plate of a groove that functions as an opening / closing body side engaging means is provided only on the lower end side of the left and right center side of the shielding plate 76 in the width direction. The lower end portion configured as described above may be used.
Further, without providing the engaging member 10A shown in the second embodiment, for example, an engaging piece formed by bending the lower end side of the rear shielding plate 78A forward may function as an opening / closing body side engaging means. It may be configured as a lower end portion.

In the first embodiment, the opening / closing body side engaging means 11X is provided only on the center side in the width direction of the lower end portion 7, but the opening / closing body side engaging means 11X is provided only on the left side of the center of the lower end portion 7 in the width direction. Or, it is partially provided only on the right side of the center of the lower end portion 7 in the width direction, or is provided on both the left and right sides thereof, or is provided on the end side of the lower end portion 7 in the width direction, or the lower end. It may be provided at a plurality of places intermittently along the width direction of the part 7.
Further, the opening / closing body side engaging means 11X may be provided in the entire width direction of the lower end portion 7.

In the second embodiment, the opening / closing body side engaging means 11X is provided only in the widthwise central portion of the lower end portion 7A, and the lower frame side engaging portion 8X is provided only in the widthwise central portion of the lower frame 6A. However, the opening / closing body side engaging means 11X is partially provided only on the left side of the center of the lower end portion 7A in the width direction, or only on the right side of the center of the lower end portion 7A in the width direction, or on both the left and right sides. It may be provided, or it may be provided on the end side of the lower end portion 7A in the width direction, or it may be provided intermittently at a plurality of locations along the width direction of the lower end portion 7A, and the lower frame side engaging portion 8X may be engaged on the opening / closing body side. It may be provided at a position corresponding to the position of the combined means 11X.
Further, the opening / closing body side engaging means 11X may be provided in the entire width direction of the lower end portion 7A, and the lower frame side engaging portion 8X may be provided in the entire width direction of the lower frame 6A.

That is, the opening / closing device of the present invention covers the entire left and right width direction regions of the lower end portion of the opening / closing body so as to be engaged with the lower frame side engaging portion provided on the lower frame and the lower frame side engaging portion. It suffices that the structure is provided with the opening / closing body side engaging means provided at least a part of the above.

Further, when the opening / closing body of the opening / closing device to which the present invention is applied is a shutter curtain, the configuration mode is not limited to a mode in which a plurality of so-called slats are connected in the vertical direction, but also a pipe, a panel, a sheet-like object, or a sheet-like material. A shutter curtain in which a single or a plurality of net-like objects are connected in succession, or a shutter curtain in which slats, panels, pipes, sheet-like objects, and net-like objects are appropriately combined may be used. It can also be applied to so-called overhead type shutter curtains.

1 Shutter device (switchgear), 4 Shutter curtain (switchgear),
5 Guide rail (guidance means), 6, 6A lower frame,
7,7A Shutter curtain lower end, 8 grooves, 8b groove rear plate (lower frame side engaging part),
8X lower frame side engaging part,
10d Rear falling plate (plate provided at the lower end of the opening / closing body and extending up and down), 11 grooves,
11b Groove front plate (opening / closing body side engaging means, engaging piece),
11C groove lower plate (opening / closing body side engaging means, engaging piece), 11X opening / closing body side engaging means,
63, 64A Front rising plate (plate provided on the lower frame and extending up and down),
64B engagement hole (lower frame side engagement part).

Claims (4)

An opening / closing body that opens / closes the opening, and a guide means that is located on both left and right sides of the opening in the width direction and guides the opening / closing body so as to be movable in the opening / closing direction while holding both ends in the width direction of the opening / closing body. In a switchgear equipped with a lower frame installed under the opening
It is provided in at least a part of the lower frame side engaging portion provided in the lower frame and the entire left and right width direction regions of the lower end portion of the opening / closing body so as to be engaged with the lower frame side engaging portion. An opening / closing device provided with an opening / closing body side engaging means. The opening / closing device according to claim 1, wherein the opening / closing body side engaging means is provided only on the central side in the width direction of the lower end portion of the opening / closing body. The lower frame side engaging portion and the opening / closing body side engaging means are formed of engaging plates that can be engaged with each other.
The engaging plate constituting the lower frame side engaging portion is formed by the groove rear plate of the groove of the lower opening provided on the upper end side of the plate provided on the lower frame and extending vertically, and the switchgear side engaging means. 1 or claim, wherein the engaging plate constituting the above is formed by a groove front plate of a groove of an upper opening provided on the lower end side of a plate provided at the lower end portion of the switchgear and extending vertically. Item 2. The opening / closing device according to item 2. The lower frame side engaging portion and the opening / closing body side engaging means are formed by engaging holes and engaging pieces that can be engaged with each other.
The lower frame side engaging portion is formed by an engaging hole penetrating the outdoor side plate surface and the indoor side plate surface of the plate provided on the lower frame and extending vertically, and the opening / closing body side engaging means is the opening / closing body. Is it formed by an engaging piece provided at the lower end and configured to be engaged with the engaging hole from the indoor side?
Or
The lower frame side engaging portion is formed by an engaging piece protruding indoor from the indoor side plate surface of the plate provided on the lower frame and extending vertically, and the opening / closing body side engaging means is formed from the lower frame plate. The claim is characterized in that the engaging piece is formed by an engaging hole configured to be engaged with the outdoor side plate surface and the indoor side plate surface of the plate which is located on the indoor side and extends vertically. 1 or the switchgear according to claim 2.

Images