WO2008056460A1

WO2008056460A1 - Sudden closure suppressing device for opening/closing apparatus

Info

Publication number: WO2008056460A1
Application number: PCT/JP2007/061518
Authority: WO
Inventors: Kazuo Takeno
Original assignee: Bunka Shutter Co., Ltd.
Priority date: 2006-11-09
Filing date: 2007-06-07
Publication date: 2008-05-15
Also published as: JP5031328B2; JP2008121217A

Abstract

A sudden closure suppressing device for opening/closing apparatuses capable of suppressing the sudden closure of an opening/closing body adaptably to various malfunctions in the opening direction of the opening/closing body. The sudden closure suppressing device comprises a flexible linear member (30) installed between the closing direction portion of the opening/closing body (10) and an immovable portion of the opening direction of the opening/closing body, a winding device (40) for winding or feeding the linear member (30) depending on the opening/closure of the opening/closing body (10), and an engagement device (50) a movable member (52) of which is pulled by the linear member (30). When the opening/closing body (10) is suddenly closed, the rotation of the winding device (40) is stopped, the linear member (30) is separated by the rise of its tension due to the stoppage, and the opening/closing body (10) is engaged with the immovable portion by the swing of the movable member (52) from which the linear member (30) is separated.

Description

Specification

Sudden closing suppression device for switchgear

Technical field

[0001] The present invention is provided in an opening / closing device such as a screen shutter device, a shutter device including an overhead door, a roll screen device, a blind, an awning device, etc. The present invention relates to a quick closing suppression device for an opening / closing device that suppresses a sudden closing operation.

Background art

Conventionally, in this type of invention, for example, as described in Patent Document 1, when the opening / closing body (shutter curtain) is about to fall suddenly due to an abnormality on the winding shaft (3) side, The base plate side of the nail tool (16) is flipped off by the irregular surface on the outer periphery of the cam plate (10) that rotates rapidly, and the nail 16a on the tip of the nail tool (16) that has swung is swallowed into the claw wheel (11). Therefore, there is a shutter sudden fall prevention device that stops the opening and closing body from falling by stopping the rotation of the ratchet wheel (11) and the winding shaft (3).

[0003] As another conventional technique, for example, as described in Patent Document 2, an arm (30) that abuts the drive chain (5) in the cross direction is provided, and the drive chain (5) When loosened by cutting, etc., the arm (30) is swung and engaged with the driven sprocket (4) integral with the take-up shaft (3) to suppress the rotation of the driven sprocket (4). Therefore, there is a shutter fall prevention device that prevents the opening / closing body (slat car 15) from closing due to its own weight.

[0004] However, in any of the above-described conventional techniques, for example, the wheel force constituting the winding shaft for winding the opening / closing body is detached from the central shaft body, the shutter curtain is detached from the wheel, or If the take-up shaft falls for some reason, there is a possibility that the opening / closing body that suddenly closes cannot be stopped.

Patent Document 1: Japanese Utility Model Publication No. 02-123598

Patent Document 2: Japanese Utility Model Publication No. 02-105494

Disclosure of the invention Problems to be solved by the invention

[0005] The present invention has been made in view of the above-mentioned conventional circumstances, and a problem to be solved is to suppress a sudden closing operation of the opening / closing body in response to various abnormalities on the opening / closing body opening direction side. It is an object of the present invention to provide a quick closing suppression device for a switchgear that can be used.

Means for solving the problem

[0006] In order to solve the above problems, a first invention includes a flexible linear member provided so as to extend between a closing direction side portion of the opening and closing body and a stationary portion on the opening and closing body opening direction side, A winding device that winds or unwinds the linear member in accordance with the opening / closing operation of the opening / closing body, and a coupling device that suppresses the closing operation of the opening / closing body by engaging the opening / closing body and the non-moving portion by the movement of the movable member. And the winding device includes: a winding body biased to wind up the linear member; and the linear member piled on the biasing force. And a means for stopping rotation of the winding body in the feeding direction when the feeding speed reaches a predetermined value or more, and the engaging device is provided with the tensile force of the linear member. While the movable member is maintained in the anti-engagement direction, the attachment is smaller than the tensile force. The movable member is configured to be urged in the engagement direction by a force, and the linear member is formed on the line of the linear member by an increase in tensile force acting on the linear member when the linear member is stopped. It is characterized by having a separating means for separating the.

Here, in an opening / closing device to which the sudden closing suppression device for an opening / closing device of the present invention is applied, an embodiment in which the opening / closing body performs only an opening operation, or an opening / closing body performs only a closing operation. Including the mode used, the mode in which the opening / closing body is used to perform both the opening operation and the closing operation, etc. The opening / closing body in this opening / closing device may be a member that partitions or opens the space by sliding. Specific examples include a mode in which a plurality of slat panels and pipes are connected in the opening and closing direction, a mode in which sheets and nets are formed, or a slat, panel, pipe, sheets and nets. Examples include an appropriate combination of the shape and the like.

[0008] The linear member may be a long and flexible member extending between the closing direction side portion of the opening / closing body and the stationary portion on the opening / closing body opening direction side. Is a string It includes a string-like member such as a wire and a rope, and a long belt-like member. Furthermore, the linear member includes an aspect formed by one of the string-shaped member and the band-shaped member, an aspect formed by connecting both the members, and the like.

[0009] In addition, the winding device includes a winding body biased in the winding direction so as to wind up or unwind the linear member in accordance with the opening / closing operation of the opening / closing body, The winding body rotates in the feeding direction against the urging force in the winding direction, and the linear member is fed out. When the feeding speed exceeds a predetermined value, the winding body rotates in the feeding direction. Any device provided with means for stopping the operation may be used.

As a specific example of the winding device, there is a known automobile seat belt retractor that winds or feeds a belt-like belt as the linear member.

[0010] Further, the engagement device includes a movable member that is movable so as to engage the opening / closing body and the non-moving part, and means for biasing the movable member in the engagement direction. Is done.

This engagement device includes a mode in which the movable member provided on the opening / closing body side is engaged with the stationary part, a mode in which the movable member provided on the stationary part side is engaged with the opening / closing body, and the like.

Further, the movable member includes an aspect that swings in the engagement direction and the anti-engagement direction, an aspect that slides to the engagement direction and the anti-engagement direction, and the like. Further, the means for urging the movable member in the engagement direction is preferably an embodiment using an elastic body such as a spring, a plate panel, or rubber, but urges the movable member in the engagement direction by its own weight. It is also possible to adopt an aspect.

[0011] The meaning of "separating the linear member" includes dividing the linear member, breaking the linear member, disconnecting the end of the linear member, and the like. .

Specific examples of the separating means include a mode in which a member connecting two linear members is divided or broken by a predetermined tensile force, or the linear member itself is broken by a predetermined tensile force. And a mode in which the connecting portion of the linear member is separated or broken by a predetermined bow I tension.

The arrangement of the separating means is such that, when the linear member is composed of two linear members, the connection between the two linear members, the connection portion on the end side of the linear member, the linear The member itself can be used.

[0012] In addition, the above-mentioned "non-moving part on the opening / closing body opening direction side" may be any part that does not move relative to the opening / closing body that opens and closes. Examples include a guide rail that guides in the opening and closing direction on the end side, a storage case or a lintel member that stores the opening and closing body on the opening direction side, and a casing that is an installation target of the opening and closing device.

Further, the immobilization part in the above-mentioned “engagement of the opening / closing body and the immobilization part” includes the specific example, but is not limited to the immobilization part on the opening / closing body opening direction side, for example, the immobility part on the opening / closing body closing direction side. It may be a part.

[0013] Further, in the second invention, the separating means is disposed on a line of the linear member or at a connection portion of an end of the linear member, and the linear member when the feeding is stopped It is characterized in that it is configured to disengage with an increase in tensile force acting on the.

More specifically, the separating means in the second invention means a configuration in which a plurality of parts are integrated in a state where they can be separated by the increase in the tensile force. As a preferable specific example of the separating means, a concave member and a convex member are interposed on the line of the linear member or at the connection portion of the end of the linear member, and the concave member and the convex member are stopped. For example, a configuration in which the linear members are separated so as to be detached due to an increase in the tensile force acting on the linear members when they are formed.

Further, as another example of the separating means, a plurality of magnets that are attracted by magnetic force are interposed on the line of the linear member or at the connection portion of the end of the linear member, and the plurality of magnets are stopped. The structure etc. which were made to detach | leave by the raise of the tensile force which acts on the said linear member at the time of being carried out are mentioned.

Furthermore, as another example of this separation means, a plurality of members integrated by bonding are interposed on the line of the linear member or at the connection portion of the end of the linear member, and the bonding location of the plurality of members And the like, and the like are peeled off due to an increase in tensile force acting on the linear member when the feeding is stopped.

[0014] In the third invention, the separating means is characterized in that the linear member is configured to be broken by an increase in bow I tension when the feeding is stopped.

[0015] In the fourth invention, the winding device winds up one end side of the linear member. The engagement device is supported by one of the opening / closing body and the immovable portion so that the movable member is pulled by the other end side of the linear member. It is supported by the other of the immobile parts.

[0016] In the fifth aspect of the invention, the winding device is supported by an immovable portion on the opening / closing body opening direction side, and the engaging device moves the movable member along the opening / closing body opening / closing direction when moved. The linear member is supported by the opening / closing body so as to be engaged with the part, and one end side of the linear member is fixed to the winding body of the winding device, and the other end side is fixed to the movable member of the engaging device. It is characterized by wearing.

[0017] Further, in the sixth invention, the winding device is supported on the closing direction side of the opening / closing body, and the engagement device opens / closes so as to engage the opening / closing body with the movable member when moved. The linear member is supported by a stationary part on the body opening direction side, and one end side of the linear member is fixed to the winding body of the winding device, and the other end side is fixed to the movable member of the engaging device. It is characterized by being.

[0018] Further, in the seventh invention, the engagement device is supported by an immovable portion on the opening / closing body opening direction side so that the movable member when engaged is engaged with the opening / closing body, and the winding device is The movable member of the coupling device is supported in a suspended manner so as to be pulled in the anti-engagement direction, and the linear member has its one end fixed to the winding body of the winding device and the other end. It is characterized in that the side is fixed to the opening / closing body! /.

Here, in the configuration that “the winding device is supported in a suspended manner so as to pull the movable member of the engagement device in the anti-engagement direction”, the winding device has the movable member. And a mode in which the winding device is indirectly suspended through a member such as a linear member.

The invention's effect

[0020] Since the present invention is configured as described above, the following effects can be obtained.

According to the first invention, normally, the linear member extending between the opening / closing body and the stationary part on the opening / closing body opening direction side is wound or fed by the winding device in accordance with the opening / closing operation of the opening / closing body. Or be issued. During this opening / closing operation, the movable member of the engagement device is subjected to the tensile force of the linear member. Therefore, the anti-engagement direction side is maintained.

Winding device force When the feeding speed of the linear member to be fed exceeds a predetermined value, the winding body of the winding device stops rotating, so that the tensile force of the linear member increases and the linear The parts are separated.

Therefore, the movable member of the engagement device moves in the engagement direction by the urging force, engages the opening / closing body and the non-moving portion, and suppresses the closing operation of the opening / closing body.

Therefore, there are abnormalities in the winding shaft that winds and unwinds the open / close body, abnormalities in the drive source that opens and closes the open / close body, abnormalities in the power transmission mechanism that transmits the power of the drive source, etc. It is possible to prevent the opening / closing body from closing suddenly due to various abnormalities.

[0021] Further, according to the second invention, the tensile force when the linear member is detached is determined by, for example, the shape of the fitting portion of the concave member and the convex member that are detachably fitted to each other. The power is set appropriately.

The force s is used to improve the separation of the linear member when the winding body of the winding device stops rotating.

Furthermore, according to the third invention, the separating means can have a simpler structure. For example, the linear member can be appropriately broken by selecting a material having a tensile strength. it can.

Furthermore, according to the fourth to seventh inventions, the support structure for the winding device and the engagement device can be a specific structure with good productivity.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The rapid closing control device for switchgear according to the present embodiment is installed in a building, a building, a warehouse, a factory, an underground mall, a tunnel, a loading platform of a vehicle, etc. The present invention can be applied to an opening / closing device that opens and closes the opening portion, partitions or opens a space inside the construction structure, and an example applied to a so-called shutter device will be described as a particularly preferable mode.

As shown in FIG. 1, the opening / closing device 1 includes an opening / closing body 10 that opens and closes while sliding, Guide rails 20 and 20 for guiding both ends in the width direction of the opening / closing body 10 in the opening / closing direction (vertical direction in the illustrated example), the closing direction side portion of the opening / closing body 10 and the immovable portion on the opening direction side of the opening / closing body 10 The flexible linear member 30 provided between the movable member 51, the winding device 40 for winding and unwinding the linear member on the stationary part side, and the movable member 51 to move the opening / closing body 10 immobile. By providing the engaging device 50 that engages with a part and suppresses the closing operation of the opening / closing body 10, the sudden closing suppression device for the opening / closing device that suppresses the sudden closing operation of the opening / closing body 10 is configured.

[0026] The opening / closing body 10 is formed by connecting a plurality of slats 11 formed by bending a horizontally-long substantially rectangular metal plate, and opening and closing directions (in the illustrated example) by left and right guide rails 20, 20 at both ends in the width direction. Is guided in the vertical direction). A seat plate member 12 for contacting the floor surface, the ground, and the like is connected to an end of the opening / closing body 10 on the closing direction side.

The upper end side of the opening / closing body 10 is fixed to the outer peripheral surface of a winding shaft (not shown) that winds and unwinds the opening / closing body 10.

[0027] The guide rail 20 has a substantially U-shaped cross section surrounding the end of the opening / closing body 10 in the width direction, and is formed in a long shape extending in the vertical direction.

[0028] The linear member 30 is preferred in the present embodiment! / According to an example, the linear member 30 can be detached from the first linear member 31 via the separating means 33 with respect to the first linear member 31. Connected second linear member 3

It is composed of 2 and force.

[0029] The first linear member 31 is a substantially long strip-like flexible member provided in a winding device 40 described later, and is formed of, for example, a cloth material having a relatively high tensile strength. .

One end side (upper end side in the illustrated example) of the winding device 40 is fixed to the outer peripheral surface of the winding body 41 of the winding device 40, and the other end side (lower end side in the illustrated example) is separated. Connected to means 33

[0030] The second linear member 32 is a metal wire having flexibility, and one end side (the upper end side in the illustrated example) is connected to the separating means 33 and the other end side ( According to the illustrated example, the lower end side) is connected to an engagement device 50 described later.

[0031] The separating means 33 includes a concave member 33a and a convex member 33b fitted so as to be detached when the tensile force becomes a predetermined value or more. The separating means 33 removes the convex member 33b from the concave member 33a due to an increase in the tensile force acting on the linear member 30 that has been stopped, so that the first linear member 31 and the first linear member 31 in the linear member 30 are removed. The two wire members 32 are separated.

The predetermined value of the tensile force is set to be greater than the bow I tension acting on the linear member 30 when the opening / closing body 10 performs a normal opening / closing operation.

According to the illustrated example, the concave member 33a is a frame-shaped member having an opening toward the convex member 33b, and is formed of a metal material or a synthetic resin material that can be elastically deformed. The lower end side of the first linear member 31 is fixed to the upper end side of the concave member 33a.

Further, according to the illustrated example, the convex member 33b has a substantially spherical or substantially cylindrical shape having a diameter larger than the opening width of the concave member 33a, and has a protrusion facing the concave member 33a. It is a member in which the base side of the protrusion is formed smaller than the opening width.

The protrusion on the upper end side of the convex member 33b is fitted into the opening of the concave member 33a, and the upper end side of the second linear member 32 is fixed to the lower end side of the convex member 33b.

In addition, the winding device 40 includes a winding body 41 urged by a spring mechanism (not shown) so as to wind up the first linear member 31, and the first linear member against the urging force. This is a well-known mechanism including means for stopping the rotation of the winding body 41 in the unwinding direction when the member 31 is unrolled and the unwinding speed exceeds a predetermined value, for example, a retractor for a seat belt of an automobile. Can be used.

The biasing force of the mainspring mechanism or the like that biases the winding body 41 in the winding direction is set to a force smaller than the closing direction force that is applied when the opening / closing body 10 performs a normal closing operation. The predetermined value related to the feeding speed is set to a speed higher than the speed when the opening / closing body 10 performs a normal closing operation.

The take-up device 40 includes a storage case (not shown) for storing the opening / closing body 10 when the guide rail 20 is opened, or a lintel (not shown) on the upper side of the opening / closing body 10. ), Etc.

Further, in the engaging device 50, the movable member 51 is maintained in the anti-engagement direction side by the tensile force of the linear member 30, and the movable member 51 is engaged by the biasing force smaller than the tensile force. It is configured to be biased in the direction. More specifically, as shown in FIG. 2, the engaging device 50 is engaged with a fixing member 51 (see FIG. 2) fixed to the opening / closing body 10 side and the guide rail 20 in close proximity. The movable member is supported by the fixed member 51 so as to freely rotate in both directions of the direction (in other words, the engagement direction) and the direction away from the guide rail 20 (in other words, the anti-engagement direction). 52, an urging member 53 that urges the movable member 52 to rotate in the engagement direction, and an arm 54 that is rotatably supported with respect to the movable member 52. The lower end of the second linear member 32 threaded to the free end side is fixed to the movable member 52 via a fixing portion 52a protruding downward.

Then, the engagement device 50 is pulled by the second linear member 32 so that the movable member 52 resists the urging force of the urging member 53, so that the movable member 52 is threaded in the anti-engagement direction side. Try to hold it!

The fixing member 51 is a member that rotatably supports the urging member 53 and is fixed to the slat 11 of the opening / closing body 10 via a bracket or the like.

Further, a blade 52 b that can be locked to the guide rail 20 is fixed to the movable member 52. The blade 52b has a substantially rectangular shape in a plan view in which a protruding end portion facing the guide rail 20 is formed in a substantially blade shape that can bite into the guide rail 20, and the blade 52b in the movable member 52 so as to face the guide rail 20. It is fixed on the free end side.

The movable member 52 is maintained at a predetermined position on the anti-engagement direction side by the tensile force of the linear member 30 (see FIG. 3 (a)), and is engaged when the tensile force of the linear member 30 disappears. Rotate in the direction and bite / insert the blade 52b into the guide rail 20 (see Fig. 3 (c)).

Further, the biasing member 53 has a substantially coil spring shape, one end side and the other end side of the biasing member 53 are locked to the movable member 52, and the central side of the coiled portion protrudes to the fixing member 51. By engaging, the movable member 52 is urged in the engagement direction relative to the fixed member 51. The urging force of the urging member 53 is smaller than the urging force for urging the winding body 41 in the winding direction in the winding device 40, and the concave member 33a and the convex member 33b of the separating means 33. It is set to a force smaller than the force that separates the two.

[0039] Further, the arm 54 allows the linear member 30 to pass through the free end side so that the arm 54 rotates in accordance with the change in the tensile direction of the linear member 30, and the base end side of the arm 54 to the movable member 52 It is rotatably supported.

This arm 54 is particularly effective when the upper end side of the guide rail 20 is an opening / closing device (for example, an overhead door) that curves forward or backward. Therefore, in the case of a shutter device such as the opening / closing device 1, the arm 54 may be omitted and the second linear member 32 may be guided by the lower side portion of the movable member 52.

[0040] According to the example shown in Fig. 1, the engaging devices 50, 50 arranged on the left and right are configured symmetrically.

Next, the characteristic operation and effects of the opening / closing device 1 having the above-described configuration will be described in detail. During the opening / closing operation of the normal opening / closing body 10, the movable member 52 is counteracted by the tensile force of the linear member 30. It is maintained at a predetermined position on the engagement direction side (see FIG. 3 (a)).

[0042] For example, when the chain of the drive mechanism for winding the opening / closing body 10 is cut or when the winding shaft for winding the opening / closing body 10 is broken, the opening / closing body 10 is detached from the winding shaft. If the open / close body 10 is drawn out by its own weight due to an abnormality in the opening direction side of the open / close body 10 due to an increase in the unwinding speed, etc. The rotation of the body 41 stops.

For this reason, the linear member 30 is subjected to a tensile force that is greater than or equal to the tensile force acting during a normal opening / closing operation, and the concave member 33a and the convex member 33b in the separating means 33 are separated by the tensile force (FIG. (See 3 (b)). Therefore, the second linear member 32 in the linear member 30 is detached from the first linear member 31 (see FIG. 3C).

Then, the movable member 52 in the engagement device 50 is rotated in the engagement direction by the urging force of the urging member 53, and the blade 52b of the movable member 52 bites into the guide rail 20, so that the opening / closing body 10 is closed. The operation will stop.

[0044] According to the above configuration, as a particularly preferable aspect, a force that causes the concave member 33a and the convex member 33b to be separated by a tensile force equal to or larger than a predetermined value. A mode in which the first linear member 31 or the second linear member 32 is broken by a tensile force of a predetermined value or more, and the connection portion between the second linear member 32 and the movable member 52 is detached by a tensile force of a predetermined value or more. It is also possible to adopt a mode in which the entire winding device 40 is detached from the immobile site with a tensile force of a predetermined value or more.

[0045] Next, another example of the sudden closing suppression device for an opening / closing device according to the present invention will be described. Note that, in the configuration shown below, the same reference numerals as those of the switching device 1 are used for the configuration substantially similar to the switching device 1, and a detailed description thereof is omitted.

[0046] The quick closing restraint device for an opening / closing device shown in FIG. 4 supports the winding device 40 on the closing direction side portion of the opening / closing body 10, and the movable member 62 when the engaging device 60 is swung is the opening / closing body. 10 is supported by a stationary part on the opening / closing body opening direction side so that one end side of the linear member 30 is fixed to the winding body 41 of the winding device 40 and the other end side is engaged with the engaging device. It is fixed to 60 movable members 61.

More specifically, the winding device 40 is supported on the seat plate member 12 of the opening / closing body 10 so that the first linear member 31 is extended upward.

Further, the engaging device 60 includes a fixing member 61 fixed to a stationary part 60a such as a lintel member, and a bidirectional direction between an engagement direction approaching the opening / closing body 10 and an anti-engagement direction separating from the opening / closing body 10. A movable member 62 supported by the fixed member 61 so as to freely rotate, and a biasing member (not shown) for biasing the movable member 62 so as to rotate in the engagement direction, The upper end of the second linear member 32 is fixed to the free end side of the movable member 62.

[0048] The fixing member 61 rotatably supports two pulley-like rollers 61a and 61b, and guides one end side of the second linear member 32 downward so as to be hooked on one of the rollers 61a. At the same time, the other end of the second linear member 32 is guided by the other roller 61b.

[0049] The movable member 62 has a free end formed in a shape (for example, a tapered shape) that can be engaged with the recess of the slat 11 of the opening / closing body 10, and is rotatably supported by the fixed member 61. As a result, it rotates between an upward position where it does not engage with the opening / closing body 10 and a lateral position or an oblique lateral position where the opening / closing body 10 engages with the recess of the slat 11. In the illustrated example, the movable member 62 is supported so as to rotate by a shaft member that supports the roller 61a.

[0050] This movable member 62 is urged to rotate in the engagement direction (clockwise according to FIG. 4) by a not-shown urging member (for example, a coil spring) provided on the shaft support portion. Has been. The biasing force of the biasing member is a force smaller than the tensile force acting on the linear member 30 when the opening / closing body 10 performs a normal opening / closing operation, and is smaller than the winding force of the winding device 40. And a force larger than the weight of the entire second linear member 32 is set.

[0051] As another example, the urging member is omitted, and the movable member 62 in the normal state is configured to be maintained in a state of being inclined toward the opening / closing body 10, so that the movable member 62 has its own weight in an abnormal state. Therefore, it is also possible to adopt a configuration that rotates in the engaging direction. In the case of this configuration, the rotational force in the engaging direction due to the weight of the movable member 62 is configured to be larger than the weight of the entire second linear member 32.

In addition, a separating means is provided at a connection portion of the linear member 30 between the first linear member 31 and the second linear member 32.

This separating means separates the second linear member 32 from the first linear member 31 by a tensile force larger than the tensile force acting on the linear member 30 when the opening / closing body 10 performs a normal opening / closing operation. It is also possible to use the separation means 33 composed of the concave member 33a and the convex member 33b described above! /, And the second linear member 32 is separated by breaking the connection portion. Also good.

Therefore, according to the sudden closing restraint device for an opening / closing device shown in FIG. 4, during the normal opening / closing operation of the opening / closing body 10, the movable member 62 is disengaged by the tensile force of the linear member 30. It is maintained at a predetermined position on the direction side (see Fig. 4 (a) and (b)).

[0054] When the opening / closing body 10 is about to be unwound due to its own weight due to an abnormality on the opening direction side of the opening / closing body 10, the winding speed in the winding device 40 increases due to an increase in the unwinding speed. The rotation of the body 41 stops.

Therefore, the linear member 30 is subjected to a tensile force that is greater than or equal to the tensile force that is applied during normal opening and closing operations, and the tensile force causes the second linear member 32 in the linear member 30 to be the first linear member. It will be in a state of being detached from 31 (see Fig. 3 (c)).

Then, since the movable member 62 in the engagement device 60 rotates in the engagement direction and fits into the recess of the slat 11, the closing operation of the opening / closing body 10 is stopped.

Further, in the sudden closing restraint device for an opening / closing device shown in FIG. 5, the movable member 72 at the time of swinging is supported by the stationary part on the opening / closing body opening direction side so as to engage with the opening / closing body 10. Engagement device 7 0, the winding device 40 supported in a suspended manner by pulling the movable member 72 in the anti-engagement direction, and one end side is fixed to the winding body 41 of the winding device 40 and the other end side And a linear member 30 ′ fixed to the end of the opening / closing body 10 in the closing direction.

[0056] The engagement device 70 has basically the same configuration as the engagement device 50 described above, and includes a fixed member 71 and a movable member 72.

The fixed member 71 is fixed to a stationary part in the opening direction of the opening and closing body 10 (for example, a lintel member, a bracket fixed to the lintel member, a guide rail, etc.), and supports the movable member 72 so as to be able to swing. .

The movable member 72 is supported by the fixed member 71 so that the blade 52b fixed on the free end side thereof is swung in an engagement direction approaching the opening / closing body 10 and an anti-engagement direction separating from the opening / closing body 10. Has been.

[0057] Then, the upper end portion of the auxiliary linear member 32 'is fixed to the movable member 72 via the arm 72a.

The base end side of the arm 72a is supported by the movable member 72 so that the movable member 72 is rotated in the anti-engagement direction by the downward pulling force of the auxiliary linear member 32 ′.

The arm 72a in the illustrated example is the arm 5 of the engagement device 50 in the opening / closing device 1 described above.

4 is supported so as to be swingable with respect to the movable member 72, but the arm 72a may be configured so as not to swing.

[0058] Further, the auxiliary linear member 32 'is a wire having higher tensile strength than the linear member 30', and its upper end side is fixed to the distal end of the arm 72a, and a winding device is provided on the lower end side thereof. The winding device 40 is suspended by being fixed to the 40 casing portions.

[0059] According to the illustrated example, the engaging device 70, the auxiliary linear member 32 ', and the winding device 40 configured as described above are disposed above the lintel member 80. In the lintel member 80, the dimension in the opening / closing body thickness direction of the opening 81 through which the opening / closing body 10 is drawn out and stored is set such that it cannot pass through the winding device 40.

[0060] Further, the linear member 30 'fed out from the winding device 40 is substantially the same member as the first linear member 31 described above, and its tensile strength is set lower than that of the auxiliary linear member 32'. ing. The linear member 30 ′ has one end fixed to the winding body 41 of the winding device 40 and the other end The side is fixed to the seat plate member 12 of the opening / closing body 10.

Thus, according to the sudden closing restraint device for an opening / closing device shown in FIG. 5, during the normal opening / closing operation of the opening / closing body 10, the tensile force of the linear member 30 ′ and the auxiliary linear member 32 ′ is used. The movable member 72 is maintained at a predetermined position on the anti-engagement direction side (see FIG. 5 (a)).

[0062] When the opening / closing body 10 is about to be unwound due to its own weight due to an abnormality on the opening direction side relative to the opening / closing body 10, the winding speed in the winding device 40 increases due to an increase in the unwinding speed. The rotation of the body 41 stops.

For this reason, the linear member 30 ′ and the auxiliary linear member 32 ′ are subjected to a tensile force that is greater than the tensile force that is applied during normal opening and closing operations, and the tensile force is greater than that of the auxiliary linear member 32 ′. The linear member 30 'having a low tensile strength is broken (see Fig. 5 (b)).

Then, since the movable member 72 in the engagement device 70 rotates in the engagement direction and fits into the recess of the slat in the opening / closing body 10, the closing operation of the opening / closing body 10 is stopped.

[0063] According to the configuration shown in FIG. 5, the linear member 30 'is ruptured by a tensile force in an abnormal state, but as another example, the auxiliary linear member 32 is more than the linear member 30'. By reducing the tensile strength of ′, the auxiliary linear member 32 ′ may be broken by the tensile force at the time of abnormality.

Further, as another example, the connecting portion between the auxiliary linear member 32 ′ and the arm 72 a, the connecting portion between the auxiliary linear member 32 ′ and the winding device 40, or the linear member 30 ′ and the seat by the tensile force at the time of abnormality The connection part of the plate member 12 may be removed.

Furthermore, as another example, the separating means 33 described above may be provided on the line of the linear member 30 ′ and the auxiliary linear member 32 ′! /.

[0064] Further, in each of the above-described embodiments, as a particularly preferable aspect, the force that is configured to stop the sudden closing operation of the opening / closing body 10 is suppressed. It is also possible to adopt a configuration that reduces the closing speed. In this configuration, for example, in the above configuration, the movable member when swinging in the engagement direction is configured to be in sliding contact with an opposing member (specifically, the opening / closing body 10 or the guide rail 20). That's fine.

Brief Description of Drawings

[0065] FIG. 1 is a perspective view showing an example of an opening / closing device provided with a sudden closing suppression device according to the present invention. FIG. 2] A perspective view showing an example of an engagement device in the sudden closure suppressing device.

3] It is a side view of the main part showing the operation of the sudden closure restraining device in order from ω to (c).

4] FIG. 4 is a side view of the main part of the other example of the sudden closing control device according to the present invention, the operation of which is shown in ω to (c).

FIG. 5] is a side view of an essential part illustrating the operation of another example of the sudden closing control device according to the present invention in order from ω to (b).

Explanation of symbols

10: Opening and closing body 20: Guide rail

30: Linear member 31: First linear member

32: Second linear member 33: Separation means

33a: Concave member 33b: Convex member

40: Winding device 41: Winding body

50: engagement device 52: movable member

53: Energizing member

Claims

The scope of the claims

[1] A flexible linear member provided so as to extend between the closing direction side portion of the opening / closing body and the immovable portion on the opening / closing body opening side, and accompanying the opening / closing operation of the opening / closing body! / Sudden closing for an opening / closing device comprising a winding device for winding or unwinding a member, and an engagement device for engaging the opening / closing body and a non-moving part by moving the movable member to suppress the closing operation of the opening / closing body A restraining device,

The winding device includes a winding body that is urged to wind up the linear member, and the linear member that is urged against the urging force so that a feeding speed exceeds a predetermined value. And a means for stopping the rotation of the winding body in the feeding direction,

In the engagement device, the movable member is maintained in the non-engagement direction side by the tensile force of the linear member, and the movable member is urged in the engagement direction by an urging force smaller than the tensile force. Configured as

On the line of the linear member, there is provided a separating means for separating the linear member by an increase in tensile force acting on the linear member when the feeding is stopped. Closure restraint device.

[2] The separating means is disposed on the line of the linear member or at a connection portion of the end of the linear member, and is separated by an increase in tensile force acting on the linear member when the feeding is stopped. 2. The rapid closing suppression device for a switchgear according to claim 1, wherein the device is configured to be removed.

[3] The rapid closing suppression device for an opening / closing device according to claim 2, wherein the separating means is configured to break the linear member due to an increase in tensile force when the feeding is stopped. .

[4] The winding device is supported by one of the opening / closing body and the immovable portion so as to wind up or unwind one end side of the linear member,

4. The engagement device according to claim 3, wherein the movable member is supported by the other of the opening / closing body and the non-moving portion so that the movable member is pulled by the other end side of the linear member. Sudden closing suppression device for switchgear.

[5] The winding device is supported by a stationary part on the opening / closing body opening direction side, The engaging device is supported by the opening / closing body so as to engage the movable member when moved with the immovable part along the opening / closing body opening / closing direction,

5. The linear member according to claim 4, wherein one end side of the linear member is fixed to the winding body of the winding device, and the other end side thereof is fixed to the movable member of the engaging device. Sudden closing suppression device for switchgear.

[6] The winding device is supported on the closing direction side of the opening and closing body,

The engaging device is supported by an immovable part on the opening / closing body opening direction side so that the movable member when engaged is engaged with the opening / closing body,

2. The linear member according to claim 1, wherein one end side of the linear member is fixed to the winding body of the winding device, and the other end side thereof is fixed to the movable member of the engaging device. Sudden closing suppression device for switchgear.

[7] The engagement device is supported by an immovable part on the opening / closing body opening direction side so that the movable member when engaged is engaged with the opening / closing body,

The winding device is supported in a suspended manner so as to pull the movable member of the engagement device in the anti-engagement direction,

2. The quick closing device for an opening / closing device according to claim 1, wherein one end side of the linear member is fixed to the winding body of the winding device, and the other end side is fixed to the opening / closing body. Suppression device.

[8] The rapid closing suppression device for an opening / closing device according to claim 1, wherein the separating means is configured to break the linear member due to an increase in tensile force when the feeding is stopped. .

[9] The winding device is supported by one of the opening / closing body and the stationary part so that one end side of the linear member is wound or unwound.

2. The engagement device according to claim 1, wherein the movable member is supported by the other of the opening / closing body and the immovable portion so that the movable member is pulled by the other end of the linear member. Sudden closing suppression device for switchgear.

[10] The winding device is supported by a stationary part on the opening / closing body opening direction side,

The engaging device engages the movable member when moved with the immovable part along the opening / closing direction of the opening / closing body. Supported by the opening and closing body,