JP6251521B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device such as an overhead door or a shutter device, and more particularly, to an opening / closing device capable of engaging an opening / closing body when it is suddenly closed with a guide rail.

Conventionally, this type of opening and closing device includes, for example, an opening / closing body (10) and a string-like traction member (33) that pulls the opening / closing body (10) from the opening direction side, as in the invention described in Patent Document 1. ), A guide rail (20) for guiding the opening / closing body (10) in the vertical direction at an end in the width direction thereof, and a closing prevention device (40) for preventing the closing of the opening / closing body (10). There is something.
According to this prior art, when the pulling member (33) is loosened or damaged, the movable engagement member (42) of the closing prevention device (40) provided in the opening / closing body (10) is connected to the guide rail ( 20) to suppress the sudden drop of the opening / closing body (10).

  By the way, in the prior art, in the case of configuring a large-mouth opening type opening / closing device in which the width of the opening that is opened and closed by the opening / closing body is relatively large, the opening / closing body is divided into left and right and the adjacent opening / closing In some cases, a middle pillar constituting the guide rail is provided between the bodies. The middle pillar is suspended by a beam-like middle pillar guide member that extends in the horizontal direction above the opening.

  However, in the case where the middle pillar described in Patent Document 1 is provided, due to an impact when the closing prevention device (40) is operated and the movable engagement member (42) is locked to the guide rail, There is a risk that the pillars, the guide rails, and the parts that support them will be damaged.

JP 2007-211411 A

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the invention is that the middle pillar, the guide rail, a portion supporting these, and the like are prevented from being damaged by an impact when the closure prevention device is operated. An object of the present invention is to provide a switchgear that can be used.

One means for solving the above problems is an opening / closing body that can be closed and slid in the surface direction, a guide rail that guides the opening / closing body in the closing direction on the end side in the width direction, and in opening and closing device and a closing prevention device which engages the movable member to said guide rail, said guide rail, the opening and closing direction and opening the rail portion continuous to the opening and closing member opening and closing direction, the closing member when the opening And a corner rail portion connecting the open / close rail portion and the storage rail portion, and the open / close rail portion is configured separately from the corner rail portion, Are arranged in a row in the width direction, and between the adjacent opening and closing bodies, a central pillar integrally provided with the opening and closing rail portion is provided, and the stationary part on the opening direction side of the opening and closing body is provided. , In the width direction of the opening and closing body The middle column guide member is fixed, and the middle column is located at a position where the opening / closing rail portion is continuous to the opening / closing body closing direction side of the corner rail portion, and the opening / closing body closing direction of the corner rail portion is the same. The middle column guide is moved between a position shifted in the opening / closing body width direction from the side and moved in the opening / closing body opening / closing direction by elastically deforming an elastic member interposed between the middle column guide member and the middle column guide member. It is characterized by being suspended by a member .

  Since the present invention is configured as described above, it is possible to prevent the middle pillar, the guide rail, the portion supporting them, and the like from being damaged by an impact when the closure prevention device is operated.

It is a perspective view which shows an example of the switchgear concerning this invention. It is a principal part perspective view which shows an example of a guide rail structure. It is the figure which looked at the closure prevention apparatus from the side, (a) shows the state before engagement, (b) shows the state after engagement. It is a perspective view which shows the engaging part of a middle pillar and a middle pillar guide member. It is a side view which shows the engaging part of a middle pillar and a middle pillar guide member. It is a front view of a middle pillar. It is a side view of a middle pillar. It is a top view of a middle pillar. It is a perspective view which shows the suspension unit which suspends a middle pillar. It is a side view of a suspension unit. FIG. 10 is a cross-sectional view taken along line (XI)-(XI) in FIG. 9.

The first feature of the present embodiment is that the opening / closing body that can be closed by sliding in the surface direction, a guide rail that guides the opening / closing body in the closing direction at the end in the width direction, A closing prevention device for engaging the opening / closing body with the guide rail, wherein the guide rail is connected to a stationary part on the opening / closing body opening direction side, and the stationary part on the opening / closing body opening direction side and the guide rail Are connected via an elastic member, and the elastic member is provided so as to be elastically deformed by a force applied to the guide rail in the closing body closing direction.
Here, the “guide rail” includes a guide rail that guides the opening / closing body in the opening / closing direction at both ends in the lateral width direction of the opening / closing body, a guide rail that constitutes a middle pillar between two adjacent opening / closing bodies, and the like. Including.
Further, the “elastic member” includes a mode in which it is elastically deformed by a compressive force and a mode in which it is elastically deformed by a tensile force.
According to the above configuration, when the opening / closing body engages with the guide rail by the operation of the closing prevention device and a force in the opening / closing body closing direction is applied to the guide rail, this force is absorbed by the elastic deformation of the elastic member. can do.
Therefore, it is possible to prevent the guide rail and the like (including the middle pillar) and the supporting portion thereof from being damaged by an impact when the closure prevention device is operated.

As a second feature, a gap is provided between the guide rail and an immovable portion closer to the opening / closing body closing direction than the guide rail, and the gap is caused by elastic deformation of the elastic member. It is set so as to move in the opening / closing body closing direction and to come into contact with the stationary part on the opening / closing body closing direction side.
According to this configuration, when the guide rail elastically deforms the elastic member and moves in the opening / closing body closing direction, the end portion of the guide rail in the closing direction can be brought into contact with the stationary part on the opening / closing body closing direction side. As a result, it is possible to prevent the guide rail from coming off.

As a third feature, there is provided means for adjusting the position of the guide rail in the opening / closing body opening / closing direction with respect to the stationary part on the opening / closing body opening direction side, and the gap is adjusted by this position adjustment.
According to this configuration, when the guide rail elastically deforms the elastic member by the operation of the closing prevention device and moves in the opening / closing body closing direction, the end portion of the guide rail in the closing direction is set as the stationary part on the opening / closing body closing direction side. It can be made to contact. In addition, the amount of movement until the contact can be adjusted, and the adaptability is good when the weight of the opening / closing body differs depending on the site or the like.

As a fourth feature, a plurality of the opening / closing bodies are provided so as to be arranged in the width direction thereof, and the guide rail constitutes a middle pillar positioned between the adjacent opening / closing bodies.
According to this configuration, it is possible to prevent the middle pillar, the supporting portion of the middle pillar, and the like from being damaged by an impact when the closure prevention device is operated.

As a fifth feature, a middle column guide member continuous in the width direction of the opening / closing body is fixed to the immovable portion on the opening / closing body opening direction side, and the middle column extends in the width direction of the opening / closing body with respect to the middle column guide member. Engage to move.
According to this configuration, it is possible to prevent the middle column, the middle column guide member, and the like from being damaged by an impact when the closure prevention device is operated.

As a sixth feature, a first receiving portion that receives the elastic member from the opening / closing body opening direction side and a second receiving portion that receives the elastic member from the opening / closing body closing direction side so as to be sandwiched between the first receiving portion. And a first receiving part supported by the guide rail, and a second receiving part supported by the middle pillar guide member.
According to this configuration, when the anti-closure device is operated, the space between the first receiving portion and the second receiving portion is elastically contracted so that the guide rail and the like (including the middle pillar) and the support thereof are provided. It is possible to prevent the parts from being damaged.

As a seventh feature, the elastic member is a plurality of annular springs overlapped between the first receiving portion and the second receiving portion.
According to this configuration, when the anti-closure device is operated, the plurality of annular springs are elastically contracted between the first receiving portion and the second receiving portion, so as to guide rails (including the middle column) In addition, it is possible to prevent the supporting portion and the like from being damaged. Moreover, the free length of the entire elastic member can be easily changed by changing the number of annular springs.

As an eighth feature, the elastic member, the first receiving portion, the second receiving portion, the first receiving portion and the elastic member are inserted in the center side of the opening / closing body closing direction. An integral suspension unit is configured by including a shaft member that supports the second receiving portion on the end side, and a suspension wheel that suspends the opening / closing body opening direction end portion side of the shaft member. The guide rail is suspended through the holding unit so as to be movable in the opening / closing body width direction with respect to the middle column guide member.
According to this configuration, when the closing prevention device is operated, the guide rail and the like (including the middle pillar) and the supporting portion thereof can be prevented from being damaged by the integral suspension unit. The durability and productivity of the part can also be improved. It is also possible to move the guide rail and the like (including the middle pillar) in the opening / closing body width direction for storage and the like.

  In the present specification, the “opening / closing body closing direction” means a direction in which the opening / closing body slides so as to partition the space at the opening opened / closed by the opening / closing device, and is referred to as “opening / closing body opening direction”. Means a direction opposite to the closing direction of the opening / closing body. Further, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body slides in order to partition or open the space in the opening that is opened and closed by the opening / closing device. Further, in the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the fully closed state. Further, in this specification, the “opening / closing body width direction” or “opening / closing body width direction” means a direction that is substantially orthogonal to the opening / closing body opening / closing direction but not the thickness direction of the opening / closing body.

Next, a preferred embodiment having the above features will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 2, the opening / closing device A includes a plurality of opening / closing bodies 10 that are slidable in the vertical direction along the surface direction and can be closed, and each opening / closing body 10 on the end side in the width direction. The guide rails 21 and 31 guided in the closing direction, the pulling mechanism 40 that pulls the opening and closing body 10 from the upper side via the closing prevention device 50, and the opening and closing body 10 when suddenly closed are engaged with the guide rails 21 and 31. A closing prevention device 50 and an intermediate pillar guide member 60 (an immovable part on the opening / closing body opening direction side) that supports the intermediate pillar 30 so as to be movable in the lateral width direction above the opening, and for example, an opening part such as a garage It constitutes an overhead door that opens and closes.
In the opening / closing device A, an opening that is long in the lateral width direction is divided into three by the plurality of (six in the illustrated example) guide rails 21 and 31, and each of the divided openings S1, S2, or S3 is divided. Are opened and closed by the opening and closing body 10, respectively.

Each opening / closing body 10 is formed by connecting a plurality of substantially rectangular panel-like members 11 elongated in the width direction in the opening / closing direction so as to rotate between adjacent panel-like members 11, 11. The roller member 12 (see FIG. 2) at the end is fitted to the guide rail 21 (or 31) and rolled to open and close in the vertical direction.
When the opening / closing body 10 is closed downward, the opening / closing body 10 comes into contact with a seating target part G (for example, a stationary part such as a floor surface, the ground, a lower frame, etc.) and is fully closed. Further, when the opening / closing body 10 is opened upward, the opening / closing body 10 is stored in a direction intersecting with the opening / closing direction (obliquely upward according to FIG. 1).

  As shown in FIG. 1, the seated portion G is provided with an engaged / disengaged portion g1. The engaged / disengaged portion g1 is a portion for engaging and disengaging a lower slide pin 34c of the middle pillar 30 described later, and has a vertical hole (not shown) that fits into the lower slide pin 34c.

  Further, in FIG. 1, the leftmost and rightmost guide rails 21 are fixedly fixed by vertical columns 25 and horizontal columns 26. Further, the two sets of guide rails 31, 31 positioned between the adjacent opening / closing bodies 10 constitute a middle pillar 30 that is movable in the opening / closing body width direction. As shown in FIG. 1, the middle pillar 30 is provided in a single or plural (two in the illustrated example) on the center side of the entire opening.

The guide rail 21 includes an opening / closing rail part a1 continuous in the opening / closing body opening / closing direction, and a storage rail part b1 for storing the opening / closing body 10 when opened in a direction crossing the opening / closing direction (in the illustrated example, obliquely upward). The open / close rail part a1 and the storage rail part b1 are configured to be continuous and integrated with a corner rail part c1 that connects the storage rail part b1 in a smooth curve.
Each part of these rail parts a1, b1, and c1 is formed in a substantially concave shape in cross section that covers the roller member 12 at the end of the opening / closing body 10 so as to be rotatable.
The open / close rail part a <b> 1 is provided with an engaged / disengaged part 33 (see FIGS. 6 to 8) for engaging and disengaging the closing prevention device 50 on the outer surface on the indoor side. The engaged / disengaged portion 33 has the same configuration as that provided in the open / close rail portion a2 integrated with the middle pillar 30 described later.

The guide rail 21 is supported by the vertical column 25 and the horizontal column 26 immovably.
The vertical column 25 is a long member that is erected and fixed to the seating target region G. The horizontal column 26 is a long member that is connected to the upper end of the vertical column 25 in an intersecting manner and continues in the horizontal direction. The vertical column 25 and the horizontal column 26 are fixed to a stationary part such as a structure to which the opening / closing device A is installed.

The middle column 30 is a substantially prismatic member that supports the two open / close rail portions a2, and is engaged with the middle column guide member 60 fixed on the upper side so as to be movable in the open / close body width direction. .
More specifically, the middle column 30 includes two open / close rail portions a2, a hollow columnar vertical column 32 that fixes and supports the open / close rail portions a2, and an engaged / disengaged portion that engages and disengages the closing prevention device 50. 33, a middle column engagement / disengagement device 34 that engages / disengages the middle column 30 with the upper and lower immovable parts, and a suspension unit 35 provided at the upper end of the vertical column 32 (see FIGS. 6 to 8). . In addition, the code | symbol 36 is a handle part used when moving the middle pillar 30 to a horizontal width direction.

The open / close rail part a2 of the middle pillar 30 is a member having substantially the same shape as the open / close rail part a1 (see FIGS. 1 and 2) of the guide rails 21 and 31 described above, and the end of the open / close body 10 continuously in the vertical direction. The roller member 12 (see FIG. 8) on the side of the section is formed in a substantially concave shape in cross section so as to be rotatable.
As shown in FIGS. 6 and 8, the open / close rail part a <b> 2 is fixed to the left and right sides of the middle pillar 30.
As shown in FIG. 1, each open / close rail part a <b> 2 is a storage rail fixed above the middle pillar 30 in a state where the middle pillar 30 is fitted to the engaged / disengaged part g <b> 1 near the center of the entire opening. It arrange | positions so that the part b2 and the corner rail part c2 may be followed. The storage rail portion b2 and the corner rail portion c2 are formed in a continuous and integral shape, and are fixed to an immovable portion by a horizontal column 26 or the like.

  The vertical column 32 is formed by bending a metal sheet metal material into a cylindrical shape having a long rectangular cross section that is continuous in the vertical direction, and fixes the open / close rail portions a2 on both sides in the open / close body width direction. And the to-be-engaged part 33 is fixed to the outer surface which faces the indoor side in each opening-and-closing rail part a2 (refer FIGS. 7-8).

  The engaged / disengaged portion 33 is formed by forming a large number of projections and depressions 33a in a front-view ladder shape on the surface of a long rectangular plate-like member continuous in the vertical direction. The unevenness 33a is formed, for example, by providing rectangular through holes or recesses at predetermined intervals on a substantially band-shaped metal member extending in the vertical direction. According to the illustrated example, the engaged / disengaged portion 33 includes a plurality of members divided in the vertical direction, but may be an integral member.

The middle column engaging / disengaging device 34 has a long shaft-like lever member 34a that is swingably supported by penetrating inside and outside the front portion of the vertical column 32, and a support point p of the lever member 34a (see FIG. 7). A transmission member 34b having a long downward shaft pivotally supported on one side of the boundary, and supported in the vertical column 32 so as to be pivotally supported on the lower end side of the transmission member 34b and to slide in the vertical direction. The lower slide pin 34c, the upward long shaft-shaped transmission member 34d pivotally supported on the other side of the support point p of the lever member 34a, and pivotally supported on the upper end side of the transmission member 34d And an upper slide pin 34e supported in the vertical column 32 so as to slide in the vertical direction.
The middle column engaging / disengaging device 34 moves the lower slide pin 34c and the upper slide pin 34e up and down by moving the lever member 34a up and down outside the vertical column 32, respectively.
In this embodiment, as shown in FIGS. 6 and 8, two lower slide pins 34c and upper slide pins 34e are provided symmetrically in the left-right direction, but a single number may be used.

  As shown in FIGS. 9 to 11, the suspension unit 35 includes an elastic member 35a, a first receiving portion 35b that receives the upper end of the elastic member 35a, and a second receiving portion that receives the lower end of the elastic member 35a. 35c, a shaft member 35d that is inserted in the center side of the first receiving portion 35b and the elastic member 35a and supports the second receiving portion 35c on the lower end side thereof, and the first receiving portion 35b is connected to the upper end of the middle column 30. And a plurality of suspension wheels 35g supported by suspension brackets 35f on the upper end side of the shaft member 35d.

  The elastic member 35a is an annular spring called a disc spring, and the inner edge side of the elastic member 35a protrudes in one axial direction with respect to the outer edge side. As shown in FIG. 11, the plurality of elastic members 35 a are alternately arranged in the vertical direction with portions where the protruding portions on the inner edge side are abutted back to back and portions where the protruding portions on the outer edge side are abutted back to back. In this way, they are superimposed.

  According to the illustrated example, the first receiving portion 35b is a rectangular plate-like metal member, and penetrates the shaft member 35d at the center thereof.

According to the illustrated example, the second receiving portion 35c is a square nut-like metal member, and a lower end of the shaft member 35d with a plurality of elastic members 35a sandwiched between the second receiving portion 35c and the first receiving portion 35b. Screwed to the side.
The second receiving portion 35c functions as a means for adjusting the position of the middle pillar 30 in the opening / closing body opening / closing direction by adjusting the gap between the middle pillar 30 and the seating target portion G.
More specifically, the second receiving portion 35c is formed in a square nut shape having an internal thread portion 35c1 on the inner peripheral surface, and its outer surface is brought close to or in contact with the connection bracket 35e, so that the lower end side of the shaft member 35d. (See FIG. 11). Therefore, if the second receiving portion 35c is rotated together with the connection bracket 35e and moved in the vertical direction with respect to the shaft member 35d, the vertical position of the middle column 30 can be adjusted.

  In FIG. 11, reference numerals 35 d 2 and 35 d 3 below the second receiving portion 35 c are washers and C-type retaining rings that prevent the second receiving portion 35 c from unexpectedly coming out downward. It can be omitted.

  The shaft member 35d is a metal shaft, and is inserted through the first receiving portion 35b and the plurality of elastic members 35a so as to be movable in the vertical direction. A male screw portion 35d1 for screwing the second receiving portion 35c is provided on the lower end side of the shaft member 35d (see FIG. 11).

  The connection bracket 35e is formed so as to surround the elastic member 35a, and its upper end is connected to the first receiving portion 35b. The connection bracket 35e is fastened to the upper end side of the middle pillar 30 by fastening tools such as bolts and screws. In the figure, reference numeral 35h is a through hole for inserting the fastening tool.

The suspension bracket 35f is configured in a substantially L shape including a horizontal piece portion 35f1 that is inserted through the shaft member 35d and is supported so as not to fall, and a vertical piece portion 35f2 connected to the horizontal piece portion 35f1. A plurality (two in the illustrated example) of suspension wheels 35g are rotatably supported on the vertical piece 35f2.
The suspension bracket 35f is fixed to the shaft member 35d so as not to rotate and to move up and down.

  The suspension wheel 35g is rotatably supported by the suspension bracket 35f so as to roll on the substantially horizontal middle pillar guide member 60.

According to the suspension unit 35 having the above-described configuration, the number of the plurality of elastic members 35a can be changed, and the free length of the entire elastic members 35a can be appropriately adjusted.
Further, if the second receiving portion 35c is rotated with respect to the shaft member 35d by the operation of rotating the middle pillar 30, the second receiving portion 35c that is screwed with respect to the shaft member 35d moves up and down. The height position of the middle pillar 30 to be held can be adjusted.

  Further, as shown in FIGS. 1 and 2, the traction mechanism 40 includes a shaft portion 41 disposed across the opening / closing body width direction on the opening direction side of the opening / closing body 10, and a plurality of shaft portions 41 supported by the shaft portion 41. Each of the reel portions 42, a traction member 43 that is wound or unwound by each reel portion 42, and a traction source 44 that biases the shaft portion 41 so as to wind the traction member 43 by the reel portion 42. Yes.

  The shaft portion 41 is disposed across the opening / closing body width direction so as to be positioned on the upper extension line of the fully-closed opening / closing body 10, and each of the both end sides thereof is a stationary part (for example, the opening / closing device A of the opening / closing device A). It is rotatably supported via a bearing bracket or the like with respect to a housing or the like to be installed.

  Each reel portion 42 is a substantially cylindrical member capable of winding and unwinding the pulling member 43, and a central portion thereof is fixed to one end side of the shaft portion 41.

  The pulling member 43 is a metal wire, and its end on the opening / closing body opening direction side is fastened to the outer peripheral surface of the reel section 42, and its end on the opening / closing body closing direction side is a closing prevention device to be described later. It is fixed to 50 movable engaging members 52.

  According to the illustrated example, the traction source 44 is a coil spring that fastens one end side to the shaft portion 41 and fastens the other end side to the immovable portion, thereby urging the shaft portion 41 in the winding direction. is there. As another example of the traction source 44, a mechanism in which the shaft portion 41 is rotated in the winding rotation direction by the weight of the weight member, and the shaft portion 41 is rotated in the winding rotation direction by the power of an electric motor or the like. It is also possible to use a mechanism or the like.

What is necessary is just to use what is disclosed by Unexamined-Japanese-Patent No. 2007-231698, for example, and the closing prevention apparatus 50 is each provided in the both ends side of the horizontal width direction of each opening / closing body 10. FIG.
As shown in FIG. 3, each closing prevention device 50 is engaged with a fixing member 51 fixed to the lateral width direction end portion side of each opening and closing body 10 and the engaged / disengaged portion 33 of the guide rail 21 or 31 ( Hereinafter, it is supported by the fixing member 51 so as to freely rotate in both directions of the direction away from the engaged / disengaged portion 33 (hereinafter referred to as the anti-engagement direction). A movable engagement member 52, an urging means (for example, a coil spring) that urges the movable engagement member 52 to rotate in the engagement direction, and pivotally supported on the lower end side of the movable engagement member 52. And a correction arm 54 that corrects the pulling direction of the pulling member 43 in an appropriate direction.
The closure preventing device 50 is pulled by the traction member 43 so that the movable engagement member 52 resists the urging force of the urging means 53, so that the engagement blade 52c of the movable engagement member 52 is The anti-engagement direction is maintained.

As shown in FIG. 1, the middle column guide member 60 is fixed to a stationary part on the upper side of each opening S <b> 1 or S <b> 3 between the adjacent guide rails 21, 31, and opens and closes in the opening / closing body width direction ( It is continuous over (substantially horizontal direction).
The middle pillar 30 is suspended from the middle pillar guide member 60 so as to move in the opening / closing body width direction.

  As shown in FIGS. 4 and 5, the middle column guide member 60 is formed in an L-shaped rail base 61 and a substantially linear shape that is fixed to the rail base and fits unevenly on the suspension wheel 35 g. A rail 62 and a drop-off prevention piece 63 for preventing the suspension wheel 35g from dropping off are provided.

  As shown in FIG. 4, the drop-off prevention piece 63 is a long piece-like member that continues in the lateral width direction of the opening / closing body with the lower end edge facing downward on the upper side of the suspension wheel 35 g, and above the rail base 61. It is fixed to the immobile site. As shown in FIG. 5, the lower end edge of the drop-off prevention piece 63 is located in an annular recess on the outer periphery of the suspension wheel 35g to prevent the suspension wheel 35g from dropping off.

Next, the characteristic operation and effect of the opening / closing device A having the above configuration will be described in detail.
When the openings S1, S2, and S3 are closed, the two middle pillars 30 are moved from the guide rail 21 toward the center of the opening in the fully opened state of the openings S1, S2, and S3 ( (See FIG. 1).
Each of the middle pillars 30 that have moved as described above, the upper and lower upper slide pins 34e and 34c are respectively inserted into the upper immovable portion and the lower engaged / disengaged portion g1 by operating the lever member 34a. It is fixed so that it does not move in the direction. In this fixed state, the open / close rail portions a2 and a2 of the middle pillars 30 are positioned so as to be continuous with the upper corner rail portion c2 to constitute the guide rail 31.

  When each opening / closing body 10 is closed, the opening / closing body 10 is drawn out from the storage rail portions b1 and b2 and moves downward along the corner rail portions c1 and c2 and the opening and closing rail portions a1 and a2. During the downward movement along the opening / closing rail portions a1 and a2, the closing prevention device 50 also moves downward integrally with the opening / closing body 10 (see FIG. 2), and the closing prevention device 50 is held on the side opposite to the engagement direction. The pulling member 43 (wire) is fed out from the closing prevention device 50.

In the middle of the closing operation, if the traction member 43 is loosened or cut due to the traction mechanism 40 or other malfunctions, the opening / closing body 10 closes at a faster speed than the normal closing operation, that is, suddenly closes, In such a case, as shown in FIG. 3B, the movable engagement member 52 (specifically, the engagement blade 52 c) of the closing prevention device 50 is placed on the engaged / disengaged portion 33 of the guide rail 21 or 31. It is hooked.
At the time of this latching, the opening / closing rail part a2 of the guide rail 31 near the center of the opening is integral with the suspended middle pillar 30, and therefore, it is moved downward by receiving the impact of the closing prevention device 50.

  At this time, the downward load applied to the middle column 30 is absorbed by the compression of the elastic member 35 a in the suspension unit 35 on the upper end side of the middle column 30. More specifically, the vertical column 32, the engaged / disengaged portion 33, the opening / closing rail portion a 1, and the like constituting the middle column 30 are slightly moved downward by the impact of the closing prevention device 50 to form the first suspension unit 35. The space between the receiving portion 35b and the second receiving portion 35c is narrowed, and the plurality of elastic members 35a are compressed and deformed therebetween (see FIG. 11).

  In addition, when the impact from the closing prevention device 50 is relatively large, the lower end of the middle pillar 30 that has moved downward may be received in contact with the seating target site G.

Therefore, it is possible to prevent the middle pillar 30, the guide rail 31, the middle pillar guide member 60, a portion supporting these, and the like from being damaged by an impact when the closing prevention device 50 is operated.
In particular, above the middle column 30, the middle column 30 can be prevented from dropping from the middle column guide member 60 by the engagement between the suspension wheel 35 g and the drop-off preventing piece 63.
In addition, when the weight of the opening / closing body 10 changes depending on the site, etc., the total length of the plurality of elastic members 35a can be appropriately adjusted by changing the number of elastic members 35a in the suspension unit 35, It is easy to rotate the middle pillar 30 to shift the position upward or downward.

  In addition, according to the said Example, although only the opening center side guide rail 31 (specifically opening-and-closing rail part a2) was connected to the immovable site | part (middle column guide member 60) via the elastic member 35a, as another example, The guide rail 21 on the end side in the width direction of the opening can also be connected to a non-moving portion (for example, the vertical column 25 or the horizontal column 26) via an elastic member so as to be vertically movable. . Furthermore, as another example, in an opening / closing device that does not include the middle pillar 30, it is possible to adopt a mode in which the left and right guide rails are supported so as to be movable up and down via the elastic member.

  Moreover, according to the said Example, although the elastic member 35a was made into the some disc spring, as another example, you may use other annular spring members, such as a spring washer. Furthermore, as other examples of the elastic member 35a, an aspect using a tension spring, an aspect using an elastic body such as rubber, and the like can be used.

  Moreover, according to the said Example, although the opening / closing apparatus A was made into the overhead door, as another example, the opening / closing apparatus of the other aspect which has a guide rail and / or a center pillar (for example, the shutter apparatus which opens and closes vertically) It is also possible to apply the configuration of the elastic member 35a and the like to a horizontal shutter device that opens and closes in the horizontal direction.

  Moreover, according to the said Example, although the opening / closing body 10 was comprised from the several panel-shaped member 11, as an other example of the opening / closing body 10, the aspect formed by connecting several slats, a single sheet, or several sheet | seat It is good also as an aspect formed by arrange | positioning a shape-like thing, a net-like thing in the opening-and-closing direction, or an aspect combining suitably a slat, a panel, a pipe, a sheet-like thing, a net-like thing, etc.

DESCRIPTION OF SYMBOLS 10: Opening-closing body 21, 31: Guide rail 30: Middle pillar 33: Engagement / disengagement part 35: Suspension unit 35a: Elastic member 35b: 1st receiving part 35c: 2nd receiving part 35d: Shaft member 35g: Suspension wheel 40: Traction mechanism 50: Closure prevention device 60: Middle pillar guide member (non-moving part) A: Opening / closing device G: Seating target part (non-moving part) S1, S2, S3: Opening

Claims (7)

An opening / closing body that can be closed by sliding in a plane direction, a guide rail that guides the opening / closing body in the closing direction at the end in the width direction, and the opening / closing body that is suddenly closed is engaged with the guide rail. in opening and closing device and a closing prevention device,
The guide rail connects the open / close rail portion and the storage rail portion, the open / close rail portion continuous in the open / close body opening / closing direction, the storage rail portion that stores the open / close body in the direction intersecting the open / close direction when opened. A corner rail portion, and the opening and closing rail portion is configured separately from the corner rail portion,
A plurality of the opening / closing bodies are provided so as to be lined up in the width direction thereof, and between the adjacent opening / closing bodies, a middle pillar provided integrally with the opening / closing rail portion is provided,
A middle column guide member that is continuous in the width direction of the opening / closing body is fixed to the stationary part on the opening direction side of the opening / closing body,
The middle pillar is shifted from the opening / closing body closing direction side of the corner rail portion to the opening / closing body width direction at a position where the opening / closing rail portion is continuous to the opening / closing body closing direction side of the corner rail portion. And is suspended by the middle column guide member so as to move in the opening / closing body opening / closing direction by elastically deforming an elastic member interposed between the middle column guide member and the middle column guide member. Opening and closing device characterized. Said in columns, a gap is provided between the stationary portion of the closing body closing direction side than the in pillars, the gap, the in column moves to the opening and closing member closing direction by the elastic deformation of the elastic member The opening / closing device according to claim 1, wherein the opening / closing device is set so as to abut on an immovable portion on the closing direction side of the opening / closing body. The means for adjusting the position of the central pillar in the opening / closing body opening / closing direction with respect to the stationary part on the opening / closing body opening direction side is provided, and the gap is adjusted by adjusting the position. Switchgear. The elastic member, a first receiving part that receives the elastic member from the opening / closing body opening direction side, and a second receiving part that receives the elastic member from the opening / closing body closing direction side so as to be sandwiched between the first receiving part A shaft member that is movably inserted in the opening / closing body opening / closing direction at the center side of the first receiving portion and the elastic member and supports the second receiving portion on the end side of the opening / closing body closing direction, The suspension member is provided with a suspension wheel that suspends the end of the shaft member in the opening / closing body opening direction to form an integral suspension unit, and the middle column is opened and closed with respect to the middle column guide member via the suspension unit. The switchgear according to any one of claims 1 to 3, wherein the switchgear is suspended so as to be movable in the body width direction . When the opening / closing rail portion of the guide rail receives an impact of the closing prevention device and the middle pillar attempts to move in the opening / closing body closing direction, the gap between the first receiving portion and the second receiving portion is narrowed. The opening / closing device according to claim 4, wherein the elastic member is compressed and deformed between them . The switchgear according to claim 4 or 5, wherein the elastic member is a plurality of annular springs overlapped between the first receiving part and the second receiving part . The opening and closing according to any one of claims 4 to 6, wherein a plurality of said suspension vehicles are arranged side by side in the width direction of the opening and closing body, and said middle pillar is located substantially at the center in the arrangement direction of these plurality of suspension vehicles. apparatus.

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