JP2006225936A - Sheet shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet shutter capable of making a closing operation quickly perform by energizing the letting out of a sheet and the descendent movement and, at the same time, preventing an abutting trouble by enabling it to freely deform in the whole direction when a ground contact section is abutted on an abutment. <P>SOLUTION: In the sheet shutter 1 arranging a plurality of straight core materials in the longitudinal direction by having a core material arrangement interval H in the vertical direction and performing opening and closing operation by storing the side end of a sheet 2 providing the ground contact section 8 ground-contacting a floor surface to the lower end of the sheet in a guide groove 14 of struts 3 and 3 forming a shutter mounting opening in a retractably movable manner in the groove, a weight core material 7b heavier than the core material 7 is provided in the vicinity of an upper part of the ground contact section 8 of the sheet 2 and, at the same time, a buffer core material 9 elastically deforming by having flexibility and elasticity is provided to the inside of the ground contact section 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sheet shutter installed at an entrance / exit of a building such as a factory or a warehouse.

  2. Description of the Related Art Conventionally, as disclosed in Patent Document 1, a sheet shutter that opens and closes a shutter sheet by moving a shutter sheet up and down on left and right columns installed at entrances and partitions of a building such as a factory or a warehouse. A sheet in which a plurality of core materials that maintain the straightness of the sheet are arranged in the sheet feeding direction (length direction) is provided so that the sheet can be wound and fed while being wound around a cylindrical winding drum that is rotated forward and backward by a drive motor. It is done.

In this sheet, a pipe-shaped core material is inserted into a bag-shaped core material mounting portion in which the core material is evenly provided with a predetermined core material arrangement interval (pitch) in the sheet feeding direction, and is grounded to the floor at the bottom of the sheet. A grounding portion is provided, and both sides of the core material and the seat are inserted into the guide groove of the support column and moved up and down to open and close.
JP 2001-115755 A

  Since the sheet shutter shown in Patent Document 1 is inserted into the guide groove of the support column in a state where the core material is inserted into the bag-shaped core material mounting portion having the core material arrangement interval, the strong wind is generated by the straightness of each core material. However, there is an advantage that the sheet is not greatly bent. However, since a hard core material is also inserted in the grounding part, when a descending sheet comes into contact with a vehicle or an article passing through the frontage, these contacted objects are damaged due to a large contact impact. Has the disadvantage of

  In addition, the seat shutter that inserts the core material insertion part into which the core material is inserted into the guide groove of the support and moves it up and down slides while the bag part of the core material attachment part is strongly pressed against the guide wall in the guide groove by the core material. There is a drawback that the core material mounting portion, the sheet, and the like are easily worn out. Further, a large gap is formed between the both sides of the sheet and the guide groove, and there is a problem that the airtightness between the support column and the sheet is impaired. Furthermore, when a moving body (contact object) such as a vehicle contacts the seat and the core material is deformed by the contact load, the guide groove of the column is easily damaged by the contact load via the core material, and replacement and repair are possible. There are problems such as complicated maintenance work.

  A sheet shutter for solving the above-mentioned problem is as follows. First, a plurality of core members 7 that pass straight in the left-right direction are arranged with a core material arrangement interval H in the vertical direction, and a grounding portion that contacts the floor surface at the lower end of the sheet In the seat shutter 1 that opens and closes and accommodates the side edge of the sheet 2 provided with the seat 2 in the guide grooves 14 of the columns 3 and 3 that form the shutter mounting opening, the grounding portion 8 of the sheet 2 A weight core material 7b that is heavier than the core material 7 is provided in the upper vicinity, and a buffer core material 9 that is elastically deformed with flexibility and elasticity is provided in the grounding portion 8.

  Second, the buffer core material 9 of the ground contact portion 8 is formed of a hollow cylindrical body.

  Thirdly, a weight core material 7b is disposed above the grounding portion 8 with a contact buffering interval L allowing deformation of the grounding portion 8, and the core material between the core materials 7 adjacent to each other. It is characterized by being narrower than the arrangement interval H.

  Fourth, the core material support 7a having the support portions 35 inserted into the guide grooves 14 of the column 3 is detachably attached to both sides of the core material 7 and the weight core material 7b provided in the left and right widths of the seat 2. At the same time, the side 2b formed on both sides of the seat 2 is inserted into the guide groove 14 at the outer end of the support portion 35 so that the seat 2 is guided along the columns 3 and 3.

  Fifth, the core material support 7a is constituted by core material support members 30, 30 that are divided along the axis thereof, and each core material support member 30, 30 is formed at the end of the core material 7 formed in a pipe shape. An attachment portion 33 inserted and supported, and a support portion 35 that sandwiches and fixes the side portion 2b of the sheet 2, and the core material 7 is placed in the bag-shaped core material attachment portion 2a of the sheet 2 formed in the left-right width direction. The core part 7 is inserted into the end part of the core material 7 to insert the attachment part 33 of the core material support members 30 and 30 to support the core material support tool 7a, and the side part 2b of the sheet 2 is sandwiched and fixed by the support part 35. It is a feature.

  Sixth, a bag-shaped core material mounting portion 2a formed in substantially the entire width of the sheet 2 is formed, and the core material 7 and the weight core material 7b formed in the sheet width are inserted and supported in the core material mounting portion 2a. A slit 2c for inserting the mounting portion 33 of the core material support 7a is formed at the core material insertion end position of the core material mounting portion 2a. The mounting portion 33 is inserted from the slit 2c and the core material support 7a is inserted into the core material 7. In addition to being attached, the side portion 2b of the sheet 2 is sandwiched and fixed by the support portion 35.

  Seventh, the core material support 7a is inserted into and supported by a connecting member 40 that is a cylindrical body that is fitted and supported at the end of the weight core material 7b.

The present invention has the following effects by being configured as described above. The weight core material having a weight larger than that of the core material between the lower core material arranged on the seat and the grounding portion urges the sheet to move downward and close even if the weight of the grounding portion is reduced by the weight. And the weight of each core material above the weight core material can be reduced.
In addition, since the grounding portion made of a cushioning core material that retains straightness in the width direction and has flexibility does not contain a highly rigid core material or the like, it deforms in accordance with the shape of the floor surface and performs grounding with high airtightness. At the same time, the buffer core material can be freely deformed in all directions when coming into contact with the contact object, so that the contact impact can be reduced and contact trouble can be prevented.

The cushioning core made of a hollow cylinder with flexibility and elasticity retains the straightness of the lower part of the seat, and reduces the impact of contact with the contact object at the time of grounding by deforming the cross section And can be quickly restored when it is separated from the floor and the contact object.
Further, the cylindrical body of the buffer core material can easily form the hollow portion in the hermetic chamber, can provide the straightness by the hermetic chamber, and can detect the contact with the contact object by the air pressure of the hermetic chamber. It is also possible to constitute a grounding part having an inexpensive contact sensor function.

The seat has a structure in which a weight core material is disposed immediately above the grounding portion with a contact buffering interval. When the grounding portion in contact with the contacted object bends upward, the contact buffering interval is used as a bending allowance. It can be sufficiently deformed, and the impact can be reduced without applying a large contact or bending resistance to the contact object. Further, direct contact between the heavy weight core material and the contact object or the human body can be avoided, and contact problems between the weight core material and the contact object can be prevented.
In addition, since the contact buffering interval is shorter than the core arrangement interval of the upper core material, and the heavy weight core material is brought close to the grounding portion, the closing operation of the seat can be quickly performed without increasing the weight of each core material and the grounding portion. And the straightness of the grounding portion can be assisted.

The side part of the sheet is supported by the support part of the core material support tool attached to both ends of the core material provided in the front width of the support column, so that the sheet is supported with the support part and the side part inserted into the support column and stretched. Can be smoothly opened and closed.
Further, the side portion can be stretched and supported in a state of being deeply inserted into the column by a plurality of core material support tools, and the airtightness between the seat and the column can be enhanced.

The core material support tool is constituted by a core material support member that is divided, and an attachment portion that is inserted into and supported by the core material support member at the end of the core material, and a support portion that sandwiches and fixes the side portion of the sheet are formed. Thus, the side portion can be supported tightly in a state where the side portion is stably held by the support portion of the core material support member that supports the attachment portion on the core material.
Further, when the seat is opened and closed, the support portion that holds the side portion in the guide groove is slid, so that direct contact between the side portion and the side wall that forms the guide groove can be prevented. Moreover, since the core material support tool can easily release the nipping of the sheet by disassembling the core material support member, the maintenance work of the core material support tool or the sheet or the core material can be facilitated.

  A core material is inserted and supported in a bag-shaped core material attachment portion formed in the width direction of the sheet, and a slit for inserting the attachment portion of the heart material support tool is formed at the core material insertion end position of the core material attachment portion and attached from the slit By inserting the part and attaching the core material support to the core material, the mounting part can be easily attached to the core material in the core material mounting part from the outside of the side part through the slit by holding and fixing the side part by the support part. Further, the side portion can be clamped and fixed by the support portion.

  By inserting and supporting the core material support tool into a connecting member made of a cylindrical body that is inserted into and supported by the end of the weight core material, the weight core material is formed into a round bar-shaped member formed by simply cutting both ends. In addition, the core material support can be easily attached and supported via the connection member without requiring special processing of the weight core material.

  Hereinafter, an embodiment of the present invention shown in the drawings will be described. 1 and 2, reference numeral 1 denotes a seat shutter having a seat guide structure according to the present invention, which opens and closes the entrance / exit by moving the seat (shutter) 2 forward / backward on a shutter frame standing at the entrance / exit of a building or the like. be able to.

  The shutter frame of the seat shutter 1 includes left and right support columns (side frames) 3 and 3 which are vertically fixed along a support column or wall surface of a building that forms an entrance / exit to form an opening (seat opening / closing interval), and the support column 3 , 3 and a hollow box-like seat case 4 which is attached and supported by connecting the upper parts thereof, and is formed into a gate-like frame. The sheet case 4 is provided with a hollow cylindrical winding drum 5 that allows the sheet 2 to be wound and rotated. The support columns 3 and 3 are configured so that the seat 2 can be moved up and down by a seat guide structure which will be described later.

The configuration of each part will be described below. First, the seat case 4 has a configuration similar to that of the conventional case, and end plates 4a and 4a are detachably fitted to both ends of the hollow cover frame, and the passage (hoistway) of the seat 2 is formed on the lower side of the cover frame. ) It is a box shape with 4b open.
A columnar drive motor 6 accommodated in the end portion of the winding drum 5 is detachably attached and fixed to the right end plate 4a by an attaching screw.

  The drive motor 6 is engaged and supported on the right side of the winding drum 5 by a driving plate 6a provided on the motor shaft while being inserted into the right end of the winding drum 5. The left side of the winding drum 5 is supported by a shaft support plate 6b that is supported by the left end plate 4a. The take-up drum 5 has a highly rigid and lightweight structure with the configuration shown in FIG.

The sheet 2 is made of a rectangular synthetic resin curtain having translucency and flexibility. The upper end (base side) of the sheet 2 is attached and fixed along the axial direction of the winding drum 5. By reverse rotation (winding and feeding rotation), the feeding is lowered and the winding is raised and opened and closed.
The sheet 2 is provided with a plurality of bag-shaped core material mounting portions 2a having a predetermined core material arrangement interval (pitch) H over substantially the entire length in the longitudinal direction (feeding direction) of the curtain body, and each core material mounting portion 2a. A pipe-shaped core material 7 having a certain rigidity, a weight core material 7b and the like are inserted therein. Thereby, the sheet | seat 2 maintains the straightness of the width direction, and the bending at the time of opening / closing operation | movement and the bending by a wind are prevented.

As shown in FIGS. 2 and 4 to 8, the sheet 2 in the illustrated example is formed by stacking sheet pieces 2 s and 2 s formed at intervals between the adjacent core material 7 and the core material 7 in the vertical direction. The ends are joined by means such as welding or adhesion to form the core material attaching portion 2a, and the core material is manufactured to a predetermined length.
The core material attaching portion 2a can be supported in a state where the one side of the bag portion is expanded and the core material 7 is inserted, and the entire length of the core material 7 is accommodated in the core material attaching portion 2a.

The length of the core material 7 is shorter than the front width and is formed to be approximately the same length as the front width, and the width from the left and right ends of the sheet 2 to the left and right ends of the core material 7 at equal distance positions is set to the side portion 2b. In addition, slits 2c are formed in the longitudinal direction so that attachment portions 33 of a core material support 7a (to be described later) can be inserted at front and rear surface positions on both sides of the core material attachment portion 2a corresponding to the left and right ends of the core material 7. Yes.
Note that the sheet 2 is not limited to the above-described manufacturing means, and is formed in a bag shape by an arbitrary sheet member, for example, at the position where the core material is disposed on the surface of the single sheet 2 as will be described later with reference to FIGS. It is also possible to adopt a configuration in which a plurality of the core material attaching portions 2a are provided.

Further, the lower end of the sheet 2 does not accommodate the highly rigid core material 7 or the like, maintains the straightness in the width direction and has sufficient flexibility to be grounded, and contacts when the sheet 2 descends. A grounding unit 8 having a contact sensor function for detecting contact with an object or a floor is configured.
As shown in FIGS. 2 and 3, the grounding portion 8 has a cushioning core material 9 having a certain straightness and elasticity inserted into a storage portion 9 a formed in a bag shape by folding the lower end of the seat 2, The accommodating portion 9a is covered so as to be detachable from below by bending the flexible ground cover 10 so as to have a tubular cross section.

Thus, when the grounding portion 8 comes into contact with the floor surface as the seat 2 descends, the flexible grounding cover 10 is pressed by the weight of the housing portion 9a and the buffer core material 9 in a state of being deformed following the floor surface. In addition, it is possible to perform grounding while ensuring airtightness.
A core material attaching portion 2a is provided above the grounding portion 8 with a contact buffering interval L, and a weight core material 7b for energizing the downward movement of the seat 2 by weight is accommodated in the core material attaching portion 2a. The

  The weight core material 7b is preferably a round bar-like member (iron bar or the like) that is heavier than the lightweight core material 7 having a pipe shape. That is, in this case, for example, an iron bar that is simply cut to a predetermined length can be used as the weight core material 7b. And the connection member 40 which consists of the cylindrical body which mentions the core material support 7a later to the both ends of the round bar of the weight core material 7b is inserted, and only the attachment part 33 of the core material support 7a is inserted into the connection member 40. There is an advantage that it can be mounted and supported by simple means.

  The contact buffering interval L is shorter than the interval between the adjacent core materials 7 and 7 and the lowermost core material 7 and the weight core material 7b. According to this, in the standby state where the weight core material 7b is positioned in the lower half of the winding drum 5 as shown by the dotted line in FIG. The grounding portion 8 arranged with a contact buffering interval L from the concentric core material 7b can stand by so as to close the passage 4b of the seat case 4 from below.

When the winding drum 5 is reversed, the weight core material 7b located in the lower half of the winding drum 5 is brought close to the grounding portion 8 even if the grounding portion 8 is lighter than the core material 7. By energizing the sheet 2, the sheet 2 can be urged to move downward and can be quickly closed.
Further, since the contact buffering interval L is made shorter than the core material arrangement interval H between the adjacent core members 7 and 7 and the heavy weight core material 7b is brought close to the grounding portion 8, each of the upper layers of the weight core material 7b. The core material 7 can also be made of a lighter pipe member. Therefore, there is also an advantage that the opening operation of the seat 2 can be smoothly performed without increasing the ascending drive addition by reducing the weight of each core material 7 and the ground contact portion 8.

  Next, the column 3 will be described. As shown in FIG. 4, the supporting column 3 in this embodiment is not an uneven surface on the peripheral wall as shown in FIG. It is made into the integral support | pillar which consists of a substantially square-shaped cross section which has. The support column 3 can be manufactured by means such as roll forming a single iron plate, or forming an aluminum alloy material by extrusion or drawing.

That is, the support columns 3 and 3 are formed with openings 11 serving as guide grooves that support both sides of the seat 2 and move and guide in the vertical direction in the vertical direction of the inner wall facing inward. And the guide rail 12 which inserts the edge part of the sheet | seat 2, the core material 7, the weight core material 7b, the earthing | grounding part 8 grade | etc., Through the heart material support tool 7a in the opening part 11, and guides raising / lowering is detachably attached and fixed.
As shown in FIGS. 7 and 8, the column 3 is assembled to a gate member W such as a building. As shown in FIG. 4, the side portion 2b of the seat 2 and each core support 7a in the guide rail 12 are provided. Or the like can be inserted to support the both sides of the seat 2 and guide it up and down.

  The support column 3 is integrally formed with a vertical mounting groove 19 in the center of the front wall 13 and the rear wall 15 positioned on the front and rear sides of the guide rail 12. As a result, the mounting groove 19 can accommodate and install the mounting seat 16 for the gate member W, the harness 17 for electric wiring, the mounting tool 18 such as various bolts and nuts, and the mounting fixtures.

  The mounting groove 19 can be easily formed with various types of mounting holes 20 at a predetermined position or an arbitrary position on the bottom wall 19a, and the mounting tool 18 can be attached or tightened through the mounting holes 20. can do. The opening of the mounting groove 19 can be removably covered with a groove cover 21 as necessary. In this case, the groove cover 21 can be closed in a watertight manner to make the column surface flat.

As shown in FIGS. 7 and 4, the column 3 is fixedly attached to the building by first positioning each mounting hole 20 formed in the column 3 with respect to a plurality of mounting seats 16 mounted at predetermined positions of the gate member W, By inserting the fixture 18 into the mounting hole 20 and tightening it to the mounting seat 16, the column 3 can be erected and fixed to the gate member W stably and easily.
The front and rear side walls 12 a and 12 a and the inner wall 12 b are integrally formed in a U shape in a plan view, and the guide rail 12 is inserted and fixed in the opening 11. As a result, the guide rail 12 forms a guide groove 14 that guides the seat 2 up and down in the column 3.

Further, the guide rail 12 is integrally formed with a flange portion 12c outwardly from the end portions of the side walls 12a and 12a, and the flange portion 12c is fastened and fixed to the side wall of the column 3 by a mounting screw 22.
The guide rail 12 inserted and fixed to the support 3 in this way can increase the rigidity of the support 3, and the core material support 7 a and the side portion 2 b are inserted into the guide groove 14 of the guide rail 12, and the seat 2 Can be smoothly guided up and down.

Next, the advancing and retracting structure of the seat 2 will be described. In this embodiment, the drive motor 6 employs a motor with a brake that can rotate forward and reverse. The motor shaft of the drive motor 6 includes a detection device (not shown) such as an encoder or a sensor. The rotational speed (signal) is read and judged by the control box 25, and the operation and stop of the seat 2 can be performed as desired.
Further, the sheet shutter 1 can freely set the opening / closing operation of the sheet 2 and the mode of the opening / closing pattern and the like by an operation switch 26 such as a remote control switch or a setting switch provided in the control box 25 to appropriately move the seat 2 forward and backward. Can be done.

An opening sensor (starting sensor) 27 made of an infrared sensor or the like is installed at an appropriate position of the columns 3 and 3 so as to face the center of the front side, and the opening sensor 27 passes a passing body such as a person or a transport vehicle in front of the seat 2. When detected, the drive motor 6 is actuated by the detection signal of the opening sensor 27 via the control box 25, and the seat 2 being closed can be automatically opened.
The opening sensor 27 is easily installed on the side surface or front surface of the column 3 or the surface of the seat case 4 by an attachment structure as will be described later with reference to FIG.

  Further, when there is an obstacle (contacting object) below the seat 2 with the seat 2 being opened, the lower side of the column 3 is used for obstacle detection that regulates the lowering of the seat 2 by the drive motor 6. A lowering restriction sensor 28 made of infrared rays or phototubes is provided. Further, the drive motor 6 is stopped by the detection signal of the descent stop sensor 29 installed in the grounding portion 8 with a configuration described later, and damage to the sheet shutter 1 including the contact object and the sheet 2 and occurrence of contact troubles are caused. Can be prevented.

Next, the sheet guide structure will be described with reference to FIGS. In this sheet guide structure, each core material 7, weight core material 7b, buffer core material 9 and the like have a length substantially equal to or slightly shorter than the opening width formed between the left and right columns 3, 3, and each core material 7, weight A core material support 7a having a guide length slidably inserted into the guide rail 12 is provided at both ends of the core material 7b and the like.
Further, the sheet 2 is formed as a side part 2b to be inserted into the guide rail 12 from both ends to the slit 2c of the core material attaching part 2a, and the core material support 7a is attached and supported on the side part 2b. It is configured as possible.

  The core material support tool 7a in the illustrated example is composed of core material support members 30 and 30 that are divided into two symmetrically, and each core material support member 30 and 30 is in a state in which the side surfaces 2b are sandwiched from both sides with the mating surfaces facing each other. The three members are integrally fastened by a plurality of bolts 31 and nuts 32 to be provided on the seat 2.

  That is, the core material supporting members 30 and 30 are attached to one side at a predetermined depth in the guide groove 14 of the guide rail 12 and the mounting portion 33 inserted and supported in the pipe of the core material 7 at a predetermined length. A support portion 35 that is inserted and supported so as to be slidable and a large-diameter connection portion 36 that connects the two are integrally formed. Further, an attachment hole 37 for inserting the bolt 31 and the nut 32 in an embedded state is formed in the attachment portion 33 and the connection portion 36 of each core material support member 30, 30.

  Thereby, the core material support members 30 and 30 can insert the attachment portions 33 and 33 into the core material 7 from both outer sides of the side portion 2b into the slit 2c formed in the core material attachment portion 2a (FIG. 5). Further, in a state where the mounting portions 33 and 33 are inserted and supported in the core material 7, the side portions 2b of the core material mounting portion 2a into which the core material 7 is not inserted are sandwiched and fixed by the support portions 35 and 35 on the distal end side. Can do. At this time, since the insertion amount of the core material support 7a can be freely adjusted with respect to the core material 7, the core material support 7a is accurately guided and supported with respect to the column 3 even if there is an error in the processing error of the core material 7 or the frontage width. can do. Further, as shown in FIG. 6, the side portion 2b formed by the core material attaching portion 2a is sandwiched between the support portions 35 and 35 and slightly slacks up and down, but has no functional influence.

The core material supporting members 30 and 30 are formed by a plastic material having wear resistance and a certain toughness and having a lower rigidity than the bending strength of the core material 7. Moreover, since the support part 35 which has the sliding property by a plastic material is slid to the guide rail 12, sticking of sliding members, such as a sliding tape, in the guide groove 14 of the guide rail 12 is omissible.
Furthermore, when the core material support 7a is worn or deformed or damaged due to contact with the contact object, maintenance work such as repair or replacement can be easily performed without requiring replacement of the long core material 7. it can.

  The support portion 35 has a predetermined slide support strength with respect to the thickness (outer diameter) of the mounting portion 33 inserted into the pipe-shaped core material 7 or the outer diameter of the core material 7 and has a small thickness or outer diameter. It is formed to become. Thereby, the guide groove 14 formed in the support | pillar 3 can also be formed as narrow as the support part 35 is inserted. Therefore, the core material 7 can support the sheet 2 while maintaining the same strength as the conventional one without changing its diameter. Further, since the support strength of the core material support 7a is maintained and the small-diameter support portion 35 is inserted into the guide rail 12, the weight can be reduced and the manufacturing cost can be reduced without making the support column 3 thicker.

  Further, when the contact object comes into contact with, for example, the seat 2 from the front-rear direction, the contact load received by the core material 7 is elastically received by the core material support 7a having rigidity lower than that of the core material 7, so that the contact load is buffered. 7 can be prevented and protected from deformation or breakage. Further, when the core material support member 30 is deformed or damaged, the core material support 7a can be disassembled and easily pulled out and removed from the core material 7 by releasing the clamping and fixing by the bolts 31 in the reverse order of assembly.

Accordingly, maintenance work such as replacement of the core material support 7a is easy, and the installation of a new core material support member 30 can be simplified, and the return operation of the seat 2 can be performed quickly.
The slits 2c and 2c provided on the front and rear surfaces of the core material attaching portion 2a can be formed by shifting in the left-right direction. Further, the slit 2c after the core material support 7a is attached is provided with a closing means such as sticking or applying a seal member, thereby preventing air from entering the core material attachment portion 2a and ensuring airtightness. can do.

As shown in FIGS. 2 and 3, the guide structure of the weight core material 7 b is provided with connection members 40 having pipe-like cross sections on both sides of the weight core material 7 b accommodated in the core material mounting portion 2 a, The attachment portions 33, 33 of the core material support members 30, 30 are inserted and supported through the slits 2c. Thereby, the core material support 7a can be shared by the core material 7 and the weight core material 7b.
Although the connecting member 40 in the illustrated example is formed by a pipe member in which both the attachment portion 33 and the weight core material 7b are fitted together, the connection member 40 having a pipe-like cross section is integrally formed at the end of the weight core material 7b. It can also be formed.

Further, as shown in the figure, the guide structure of the buffer core material 9 provided in the grounding portion 8 is a pipe-shaped connecting member 40 similar to the above in a state of being inserted and supported inside or outside the buffer core material 9. On the other hand, it is set as the structure which inserts and supports the attaching part 33 through the slit 2c.
In addition, it is desirable that the buffer core material 9 in the illustrated example is formed in a thick pipe shape having flexibility by a plastic material or a rubber material.

  That is, in this case, the buffer core material 9 maintains the straightness of the lower part of the seat due to the pipe rigidity and deforms the grounding part 8 in all directions when coming into contact with the contact object, by deforming the hollow part. It can be done freely and the contact load can be reduced. Further, the buffer core material 9 can quickly restore the posture return of the ground contact portion 8 when the contact with the contact object is released.

  Further, the buffer core 9 formed of a slightly hard sponge member or the like as shown in the figure is closed in an airtight state by means such as closing both ends of the hollow portion in the pipe with a closing member 41 such as a stopper. A hollow chamber (airtight chamber) can be easily formed, and the airtight chamber can be effectively used as the sensor chamber 42 constituting the descending stop sensor 29 and the like.

In this case, it is desirable to provide an air-actuated grounding sensor 43 that constitutes the descending stop sensor 29 at an appropriate position on the upper surface of the buffer core 9, and a communication hole 45 for communicating the grounding sensor 43 and the sensor chamber 42 is provided. The buffer core material 9 is formed.
As a result, when the grounding portion 8 comes into contact with the contact object and bends in all directions such as upward or in the front-rear direction, the buffer core material 9 is also deformed, and based on the change in the volume of the sensor chamber 42 of the buffer core material 9, Air is discharged from the communication hole 45, and the grounding sensor 43 can be operated to generate a stop signal that stops further lowering of the seat 2.

  This stop signal is sent to the control box 25 via a transmission device or a wiring member (not shown) connected to the ground sensor 43. As a result, the drive motor 6 is stopped or reversed by a control program set in the control box 25, so that the lowering of the seat 2 can be immediately stopped or lifted and retracted at the time of contact.

  Further, the buffer core material 9 which forms the airtight hollow sensor chamber 42 with a flexible thick pipe material is a state in which a hard core material such as a metal pipe is omitted at the bottom of the sheet 2, for example, from a sponge material. It is possible to make the pipe easy to handle, and while providing the straightness of the weight core material 7b arranged with the contact buffering distance L from the buffer core material 9, it also has its own straightness and the grounding portion The overall straightness of 8 can be maintained. In addition, the buffer core material 9 provided with an airtight chamber as described above has an advantage that the straightness is higher than that in which both ends are opened.

Furthermore, since the seat 2 has a configuration in which the weight core material 7b is arranged with a contact buffering interval L immediately above the grounding portion 8, the contact is made when the grounding portion 8 that is in contact with the contacted object bends upward. By using the buffering interval L as a bending allowance, it is possible to sufficiently allow the grounding portion 8 to be bent and to reduce the contact impact without applying a large bending resistance, thereby preventing the contact object from being damaged. Further, since the heavy and heavy weight core material 7b is provided with the contact buffering interval L from the grounding portion 8, direct contact with the contact object or the human body through the grounding portion 8 is avoided. Contact troubles between the spindle core 7b and the contact object are also prevented.
Further, when the contact is released as the seat 2 moves up, the ground contact portion 8 quickly recovers the straight-through state by the restoring force of the buffer core 9 itself.

The sheet shutter 1 configured as described above can smoothly open and close by the winding and unwinding operation of the sheet 2 by forward and reverse rotation of the winding drum 5 and improve airtightness when the sheet 2 is closed. Can be made.
Further, since the core material support 7a is provided on the pipe-shaped core material 7 and the weight core material 7b and the buffer core material 9 as the core material for maintaining the straightness of the sheet 2, the sheet 2 and the core material attaching portion 2a and the like are slid. It is possible to increase the speed of winding and feeding, which prevents movement and prevents damage. Further, the installation cost of the seat shutter 1 in the building, the maintenance work cost, etc. can be reduced.

Next, another embodiment of the sheet guide structure will be described with reference to FIGS. In addition, description is abbreviate | omitted about the structure and effect | action similar to the thing of the said embodiment.
First, the sheet 2 related to the sheet guide structure shown in FIGS. 9 and 10 includes a plurality of sheet pieces 2s formed to have substantially the same width as the slits 2c and 2c formed in the sheet 2 of the embodiment, and the sheet. It consists of a wrap margin for wrapping with a piece 2s, and a strip-shaped left and right side sheet 2d having a width and a sheet length forming the side part 2b.

  And the sheet | seat 2 is made by lapping both sides of each sheet piece 2s to the wrap part of the right and left side part sheet | seat 2d by mutually lapping up and down so that the bag part of the core material attachment part 2a may be formed. It is formed in a shape. As a result, the wrap portion of the side sheet 2d is sandwiched between the upper and lower sheet pieces 2s, and the bag-like core material mounting portion 2a can be formed. The core material 7, the weight core material 7b, etc. are formed in the core material mounting portion 2a. Can be inserted and accommodated.

In addition, an insertion groove 7c into which the wrap portion of the side sheet 2d is inserted in the core material attachment portion 2a is vertically formed at the end of each core material 7, connection member 40, and the like.
With this configuration, when the core material supporting members 30 and 30 are inserted into the core material mounting portion 2a from both front and rear surfaces of the side edge sheet 2d, the mounting portion 33 is held in the state of the core material 7 or the side material sheet 2d sandwiched from both sides. The side portion 2b can be sandwiched and fixed by the support member 35 while being inserted and supported by the connecting member 40 or the like.

Moreover, the opening end of the core material attaching part 2a is blocked in the vertical direction by the side sheet 2d, and the air flow in the front-rear direction in this part can be prevented and the airtightness can be improved.
Further, the large-diameter connecting portion 36 of the core material support 7a can be provided close to the support column 3 as shown in the drawing, so that when the seat 2 rolls, the stepped portion of the connecting portion 36 has a guide groove 14. There is an advantage that a large movement in the left-right direction can be restricted by contacting the open end of

  Next, another embodiment of the sheet guide structure shown in FIGS. 11 and 12 will be described. The sheet 2 in the illustrated example is formed by a single sheet member, and is joined to the core material arrangement position on the one side surface by attachment means such as welding or bonding the upper end where the belt-shaped sheet member 50 is bent. The bag-shaped core material mounting portion 2a is configured. And the core material 7, the weight core material 7b, etc. are accommodated in each corresponding core material attaching part 2a.

Next, one core material support member 30 constituting the core material support 7a is inserted from one side of the side part 2b to each core material 7 and the weight core material 7b side, and the other core material support member 30 is the other side of the side part 2b. And inserted into a slit 2c drilled at a predetermined position of the sheet 2 to be inserted and supported by the core material 7 or the like.
Next, the bolt 31 is inserted and fastened in a state where the side portion 2b is sandwiched between the core material support members 30 and 30, whereby the attachment of the core material support 7a to the seat 2 is completed.

  Next, another embodiment of the sheet guide structure shown in FIG. 13 will be described. The seat 2 accommodates and supports the core material 7 or the weight core material 7b in each core material attachment portion 2a formed of the sheet member 50 similar to that of the above-described embodiment. Further, the core material support 7a has a configuration in which only the support portion 35 is formed in two parts, and the round bar-shaped attachment portion 33 is inserted and supported in each core material 7 and the weight core material 7b.

In this case, without forming the slit 2c in the sheet 2, the side part 2b is aligned with the support part 35 of the core material support 7a supported by the core material 7 or the like, and the side part 2b is connected to another support part. Fastening and fixing with the bolt 31 can be easily performed in a state of being sandwiched by 35.
It should be noted that the support portions 35 and 35 of the core material support 7a are not divided into two, and the tip of the support portion 35 on the side having the mounting portion 33 is bent and formed in a U shape as shown by the dotted line in FIG. Thus, the side portion 2b can be sandwiched and fixed in the formed groove.

Next, the configuration of the winding drum 5 will be described with reference to FIG. The take-up drum 5 has a shape in which nine concave grooves 51 along the axial direction are formed at equal intervals on the circumference of the drum, and a thin drum plate 52 in which the drum circumference is formed in three parts in the same shape as viewed from the side. By connecting to each other, the structure is light and rigid.
That is, each drum plate 52 has a concave groove 51 having two square grooves formed in the middle of a thin plate and a concave groove piece 53 having bowl-shaped step portions at both ends formed integrally on the curved surface. The cylindrical winding drum 5 having a predetermined number of concave grooves 51 is formed by combining the concave groove pieces 53 of 52 with each other to form the concave grooves 51 in combination by the concave groove pieces 53 of the drum plate 52 adjacent to each other. Is configured.

  Therefore, the winding drum 5 having the above-described structure does not require a high-drawing or extrusion process using a costly aluminum material unlike conventional ones, and the divided thin iron plate can be easily processed by a processing means such as press or brake processing. Moreover, it can be manufactured at low cost. In addition, each drum plate 52 can increase the rigidity of the winding drum 5 while forming the concave groove 51 by the joining structure by joining the concave groove pieces 53.

  Next, the attachment structure of the opening sensor 27 will be described with reference to FIG. This fixture 60 has a mounting portion 61 for detachably mounting the opening sensor 27 via a screw portion and the like, a support arm 63 having a spherical receiving portion 62 and having a through hole for wiring inside, and the receiving portion. 62 and a cylindrical mounting portion 67 provided with a mounting bracket 66 that can be attached to the support column 3 on the base side, and a screw portion formed on the outer periphery of the mounting portion 67 and screwed to the receiving portion. A holder 68 that holds the receiving portion 62 between the seat 65 and a lock nut 69 that prevents the holder 68 from rotating.

  The fixture 60 configured as described above can fix the support arm 63 at a desired angle when the receiving portion 62 is brought into contact with the receiving seat 65 of the attaching portion 67 and the holder 68 is tightened, and the lock nut 69 is positioned. By fixing, the opening sensor 27 can be supported at a predetermined sensor angle. At this time, the electric wire wired through the support column 3 is connected to the opening sensor 27 through the through hole formed in the central portion of the support arm 63 from the inside of the attachment portion 67, so that the support arm 63 is rotated in all directions. However, there is a feature that rainwater and washing water can be prevented from entering without damaging the electric wire and having a watertight structure inside.

It is a front view which shows the whole structure of the sheet shutter which implemented this invention. FIG. 2 is an enlarged side view of the sheet shutter of FIG. It is a front view of the principal part which partially cuts and shows the sheet guide structure of FIG. FIG. 4 is a plan sectional view showing a sheet guide structure taken along line AA in FIG. 3. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a disassembled perspective view which decomposes | disassembles and shows the support structure of a support | pillar and a sheet | seat. It is a disassembled perspective view which shows the assembly state of FIG. It is a front view which shows another embodiment of a sheet | seat guide structure partially broken. FIG. 10 is a sectional view taken along line AA in FIG. 9. It is a front view which shows another embodiment of a sheet | seat guide structure partially broken. It is the sectional view on the AA line of FIG. It is a top view which shows another embodiment of a sheet | seat guide structure partially fractured | ruptured. It is a sectional side view which shows the structure of a winding drum. It is a plane sectional view showing composition of a fixture of an open motion sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet shutter 2 Sheet 2a Core material attaching part 2b Side edge part 2c Slit 3 Support | pillar 4 Sheet case 5 Winding drum 6 Drive motor 7 Core material 7a Heart material support 7b Weight core material 8 Grounding part 9 Buffer core material 10 Ground cover 12 Guide rail 14 Guide groove 19 Mounting groove 30 Core material support member 31 Bolt 33 Mounting portion 35 Support portion 40 Connection member H Core material arrangement interval L Contact buffer interval

Claims (7)

  A plurality of cores (7) that pass straight in the left-right direction are arranged with a core material arrangement interval (H) in the up-down direction, and a sheet (2) provided with a grounding part (8) that contacts the floor surface at the lower end of the sheet The seat (2) is grounded in the seat shutter (1) which is opened and closed by accommodating the side end in the guide groove (14) of the support columns (3) and (3) forming the shutter mounting opening. A weight core material (7b) that is heavier than the core material (7) is provided in the vicinity of the upper portion of the section (8), and a buffer core material that is elastically deformed with flexibility and elasticity in the ground contact portion (8). A sheet shutter provided with (9).   The sheet shutter according to claim 1, wherein the buffer core material (9) of the ground contact portion (8) is formed of a hollow cylindrical body.   A weight buffer (7b) is disposed above the grounding portion (8) with a contact buffering interval (L) that allows deformation of the grounding portion (8), and the contacting buffering interval (L) is adjacent to each other. The sheet shutter according to claim 1, wherein the sheet shutter is narrower than a center material arrangement interval (H) between the core materials (7).   A core material having support portions (35) inserted into the guide grooves (14) of the support column (3) on both sides of the core material (7) and the weight core material (7b) provided in the left and right widths of the sheet (2). By attaching the support (7a) in a detachable manner and inserting the side edges (2b) formed on both sides of the sheet (2) into the guide grooves (14) at the outer ends of the support (35), The sheet shutter according to claim 1, 2 or 3, wherein (2) is guided along the columns (3) and (3).   The core material support tool (7a) is constituted by the core material support members (30) and (30) which are divided and formed along the axis thereof, and the core material support members (30) and (30) are formed in a pipe shape. An attachment part (33) inserted and supported at the end of the core material (7) and a support part (35) for holding and fixing the side part (2b) of the seat (2) are formed in the lateral width direction. The core material (7) is accommodated in the bag-shaped core material attachment portion (2a) of the sheet (2), and the attachment portions (33) of the core material support members (30), (30) are provided at the ends of the core material (7). ) Is inserted to support the core material support (7a) and the side portion (2b) of the sheet (2) is sandwiched and fixed by the support portion (35).   A bag-shaped core material attachment portion (2a) formed in substantially the entire width of the sheet (2) is formed, and a core material (7) and a weight core material (7b) formed in the sheet width are formed in the core material attachment portion (2a). ) Is inserted and supported, and a slit (2c) for inserting the mounting portion (33) of the core material support (7a) is formed at the core material insertion end position of the core material mounting portion (2a), and mounting is performed from the slit (2c). The core (33) is inserted and the core material support (7a) is inserted and attached to the core (7), and the side (2b) of the sheet (2) is clamped and fixed by the support (35). 2 or 3 or 4 or 5 sheet shutters.   The core material support (7a) is inserted into and supported by a connecting member (40) comprising a cylindrical body fitted and supported at the end of the weight core material (7b). 6 sheet shutters.

Images