JP6345626B2 - Sheet shutter sheet guide structure and connecting end member used for the guide structure - Google Patents

Description

  The present invention relates to a sheet shutter sheet guide structure.

  Conventionally, as a doorway for factories and warehouses, and as a partition between rooms in a building, etc., sheet shutters that place importance on environmental management such as room temperature, air purification, daylighting, and quick opening and closing operations, etc. are widely used. The both sides of the seat to be lifted up and down are accommodated in a seat guide attached to the inner side of the support column to guide the lifting.

  These seat guides have a rail-shaped guide that opens inward from the left and right to accommodate and guide the protruding end of the rod-shaped core of the seat, or attach one of a pair of fasteners (zippers) to the end of the seat. There are known ones that house and lock them and guide them up and down. However, all of them have a drawback that the contact noise with the winding and feeding drum and rail raising and lowering guide is large during the raising and lowering operation.

  In order to improve this, a continuous wire-like engagement protrusion is provided along both side edges of the sheet, and this is accommodated and locked in a rail-shaped sheet guide to guide the raising and lowering. 1, 2 and the like.

Japanese Patent No. 3787253 Japanese Patent No. 5,608,077

  However, in the above-mentioned Patent Document 1, the guide rail and the outer periphery of the bag part are easily slid off because the guide is moved up and down in a tube-like bag part formed on both sides of the sheet, and the sheet fabric is made of a soft resin. Therefore, there is a drawback that the frictional resistance during elevation is also strong.

  Further, at both ends of the sheet of Patent Document 2, beads having a wire-like cross section are integrally formed with a plastic sheet material, and this is fitted and accommodated in a slide way (rail) having a C-shaped cross section so as to guide ascending and descending. It is.

  However, in the above guide structure, the cross-sections of the beads (engagement protrusions) at both ends of the sheet are circular, so the contact surface with the inner surface of the sheet guide is limited to one point each in the front and rear, the area of each contact surface is small, and the contact pressure of each contact surface Therefore, wear on the engaging protrusion or the inner surface of the sheet guide due to the raising and lowering of the seat is also severe.

  In addition, when the seat is raised or lowered, vibrations in the left and right direction of the engaging projections in the sheet guide part due to fluctuations in the sheet itself and fluctuations in wind pressure and tensile force in the oblique direction are also applied. There is a problem that raising and lowering is not smooth, and vibration and noise are easily generated.

The guide structure of the present invention for solving the above problems is a wire rod that is accommodated and engaged in a pair of rail-like sheet guides 11 that are installed in parallel and guided along the sheet guides 11. In the shutter sheet provided with the engagement protrusions 10 made of synthetic resin that can be elastically deformed continuously in the both ends, the cross section of the surface of the engagement protrusion 10 on the side contacting the front and rear inner surfaces of the sheet guide 11 is at least It is characterized by comprising a groove-like concave portion 10a and a mountain-shaped convex portion 10b that is formed on both sides of the concave portion 10a and whose tip is slidably pressed against the front and rear inner surfaces .

  Secondly, the cross section of the engagement protrusion 10 includes a groove-like recess 10a formed on each of the front and rear sides, and two arcs and a protrusion 10b having the same height in the front and rear. Yes.

  Third, the front and rear sides and the outer end side of the cross section of the engaging protrusion 10 are formed in a four-leaf clover shape that is symmetrical in the front-rear direction.

  Fourth, an engagement protrusion 10 is provided on the outer end of the belt-like end member 2b joined to the end of the sheet body 2a of the sheet shutter, and the end of the sheet body 2a is joined to at least one side of the end member 2b. It is characterized in that a gauge portion 2c is formed which is formed of protrusions that contact each other and perform mutual positioning.

  Fifth, the end member 2b and the engaging protrusion 10 are integrally formed of a synthetic resin material that can be elastically deformed.

Sixth, it provided a pair of end members 2b having a symmetrical cross-sectional shape for the both side ends of the sheet body 2a, integrally connected to inner ends of the respective end member 2b via the disconnected separable cutting grooves 2d It is a connecting end member formed.

  Since the tips of the two chevron-shaped projections formed on the front and rear surfaces of the engagement protrusion are in contact with the front and rear inner surfaces of the rail-shaped sheet guide, the sheet movement is guided, so left and right vibrations and uneven loads In addition, the engagement protrusions are in stable contact with the inner surface of the sheet guide, wear of the engagement protrusions is reduced, and durability is improved. In addition, since the movement of the sheet is smoothly guided, there is also noise during driving. There is an advantage that does not occur.

  Further, since the cross-section of the convex portion is an arc-shaped chevron, there is little frictional resistance when driving the shutter, and there is little noise.

  Furthermore, since the engagement protrusion is provided at the outer end of the belt-like end member that joins the end of the sheet main body, the force transmission for reciprocating the end member (that is, the sheet main body) is smooth, and a gauge portion is provided. Thus, the positioning at the time of bonding (bonding) with the sheet main body can be performed accurately and quickly, and the end portion of the sheet main body is protected by the gauge portion, so that the bonding strength is increased.

  By integrally connecting the inner ends of a pair of end members via a cutting groove, the left and right cross-sectional thicknesses after molding are the same, and the amount of winding in a roll for transportation and storage is large (long) Since it can be used, the yield is improved when it is cut into various lengths, which is economical.

  In addition, since a pair of end members can be produced in a single process, there is an advantage that work efficiency is improved.

It is a front view which shows a sheet shutter to which the present invention is applied and is partially broken. It is an enlarged side sectional view of a sheet shutter. It is a left front expanded front view which shows the structure of a seat case and a seat guide. It is sectional drawing which shows the structure of the sheet | seat guide containing a support | pillar. It is an enlarged plan sectional view showing the guide structure of the sheet. It is an expansion plane sectional view of a sheet. It is an expanded plane sectional view which shows the molding state of a pair of left and right end members.

An embodiment of the present invention will be described with reference to the drawings. The left and right sheet guides and sheets of the sheet shutter used in this embodiment are substantially the same as the example of Japanese Patent No. 5296729 related to the applicant's proposal. The only difference is the engagement protrusion on the seat side.
The seat shutter 1 is mainly installed at a doorway of a building, and includes a seat 2 for a shutter, a column 3 (side frame) as a guide constituent member that supports the left and right sides of the shutter 2 and guides up and down movement in the vertical direction, and an opening and closing mechanism for the seat 2. It is composed of a cylindrical seat case 4 or the like to be installed. The column 3 is fixed along the pillars and walls of the doorway, and the seat case 4 is installed sideways along the beam or wall of the building and is mounted in a state of being placed on the left and right columns 3.

In the illustrated example of the seat shutter 1, the seat case 4 is detachably attached via brackets 3 a fixed to the upper outer side of the support column 3 with both sides of the seat case 4 being placed on the left and right support columns 3.
The sheet 2 can be taken up and fed out by forward and reverse rotation of a seat drum (feeding device) 5 incorporated in the seat case 4, and the seat 2 is configured by left and right columns 3 on both sides. 11 is supported so as to slide up and down, and moves up and down to open and close the entrance.

First, the overall configuration of the sheet shutter 1 will be described with reference to FIGS. The seat case 4 forms a hollow case chamber by detachably attaching end plates 6a and 6b to both sides of a case body 6 having a rectangular cross section in a side view, and left and right end plates in the case chamber. A cylindrical sheet drum 5 rotatably supported by 6a and 6b is accommodated in the drum axial direction. Further, an opening 6 c that allows the seat 2 to move up and down is formed in the lower rear portion of the case body 6 so as to communicate with the left and right support columns 3.
The right end plate 6a has a cylindrical motor 7 mounted on the inner surface thereof in a horizontal posture so as to face the seat drum 5 and support it. The motor 7 is attached by fitting a driving body 8 formed of an uneven ring provided on the driving shaft 7 a to the inner surface of the seat drum 5 to rotate the seat drum 5 forward and backward.

The left end plate 6b is attached so as to close the left end portion of the case body 6, and rotatably supports a support shaft 8b of an attachment plate 8a attached to the left end portion of the seat drum 5. As a result, the seat drum 5 is pivotally supported horizontally in the seat case 4, and moves forward and downward (advance) and retracts (retracts) as the motor 7 rotates forward and backward.
Further, the opening / closing operation of the seat 2 is performed in the normal and reverse directions of the motor 7 based on the manual operation command of the operation switch 9a installed on the control panel 9 and the detection command of the detection unit 9b for detecting the passing body as in the conventional case. Controlled.

The sheet 2 is made of a rectangular curtain made of a synthetic resin material having flexibility, and the upper end is attached to the peripheral surface of the sheet drum 5 along the axial direction. The seat 2 is provided with a wire-like elastically deformable plastic material engaging projection 10 along both side edges of the curtain body, and a rail-like seat guide 11 configured on the inwardly facing surface side of each column 3. In addition, the engaging projection 10 is engaged with and accommodated so as to slide up and down. As a result, the seat 2 moves up and down while holding the seat tension in the lateral direction while preventing the sheet from coming off on both sides.
Further, at the lower end of the seat 2, a grounding portion 12 is formed in a horizontal bar shape that is airtight and elastically grounds to the ground or a floor surface (hereinafter referred to as a floor surface) in a closed state in which the seat 2 is lowered. Is provided. The grounding portion 12 also serves as a weight portion, and urges and extends the seat 2 downward by the weight.

As shown in FIG. 4, the seat guide 11 is formed by fitting the open end side of the outer rail 14 having a U-shaped cross section to the inward groove-like open portion 13 of the column 3 having a rectangular C-shaped cross section in the left-right direction. It is composed. The outer rail 14 is positioned by fitting and fixing the end portions of the front and rear side walls detachably along the support column 3.
The outer rail 14 is attached between the front and rear side walls by fitting an inner rail 16 and a seat return guide 17 connected to the upper portion of the inner rail 16 so as to be detachable and slidable left and right. The outer rail 14, the inner rail 16, and the seat return guide 17 are made of a synthetic resin material having wear resistance and predetermined flexibility. A seat guide 11 is constituted by the outer rail 14, the inner rail 16, and the like.

  As shown in FIG. 4, the inner rail 16 has a rectangular cylindrical cross-section inner locking portion 22 accommodated on the inner side of the outer rail 14 in the plan view (right outer side from the seat 2 in FIG. 4), and the inner rail 16. It is integrally formed with an engagement guide 21 that is opened inwardly on the inner side (left inner side) of the locking portion 22 and inserts and locks the engagement protrusion 10 therein.

  A guide pin 26 whose outer end penetrates the inner locking portion 22 and the outer wall of the outer rail 14 is accommodated in the inner locking portion 22, and an inner engagement is achieved by a coil spring 28 sheathed on the guide pin 26. The stop 22 is always pressed outwardly and elastically in the outer rail 14.

  The pulling action of the spring 28 causes the seat 2 to be elastically pulled in the direction of extending to the left and right sides with the engaging projection 10 at the end thereof being accommodated and locked in the engaging guide 21, Is opened and closed while being slidably guided by the engagement guide 21 (sheet guide 11).

  For example, when a strong wind pressure is applied to the seat 2 or a forklift or the like abuts and an inward load is applied, the inner rail 16 is directed inwardly through the engaging protrusion 10 and the engaging guide 21 and against the spring 28. When it is pulled and a stronger force is applied, the inner open end of the engagement guide 21 is elastically opened, the engagement protrusion 10 is pulled out from the engagement guide 21, and the engagement between the two is released. The 16 side is protected so as not to be overloaded.

  Like the sheet 2 shown by the phantom line (two-dot chain line) in FIG. 2, the sheet 2 that has come off the engagement guide 21 is located at the lower end of the return guide 17 provided at the upper end of the sheet guide 11 by rewinding the sheet. While being guided by the reverse V-shaped return groove 31 in the downward direction and housed in the engagement guide 21 on the upper end side, when the grounding portion 12 rises to the set upper limit position and then descends again, the engagement protrusions 10 at both ends of the sheet 2 are The lower end thereof is returned and inserted again into the lower engagement guide 21 by the guide of the V-shaped return groove 31 with the return guide 17 facing upward, and returned to the normal lifting operation posture.

  Here, the seat return guide 17 will be described. The seat return guide 17 is inserted into and connected to the upper portion of the inner rail 16 in the outer rail 14 as shown in FIGS. As a result, the sheet return guide 17 performs the take-up guide and the feed-out guide for the sheet 2 and, as indicated by a dotted line in FIG. And let it go out in a proper posture.

  The sheet return guide 17 is formed of a synthetic resin material so as to have substantially the same flat cross-sectional shape as the inner rail 16. That is, the sheet return guide 17 includes an engagement guide 21 that accommodates the engagement protrusion 10, and an inner locking portion 22 that accommodates the spring 28 that urges the engagement protrusion 10 outward while being inserted into the mounting pin 26. Is forming.

  As described above, the sheet return guide 17 has an upside down V-shape and an upside-down V-shape with a vertical interval for introducing the disengaged sheet 2 in the middle of the engagement guide 21. A return groove 31 formed in a notch is provided.

  Further, a sheet stopper piece 32 formed by extending the guide wall 23 inward is integrally provided on the upper portion of the guide body of the sheet return guide 17. The sheet stopper piece 32 can contact the stoppers 33 installed in the vicinity of both sides of the grounding portion 12 even when there is a malfunction in the winding of the sheet 2, so that the sheet stopper 2 can be lifted beyond the contact position of the sheet 2. It can regulate and prevent entrainment of the grounding part 12.

  The technical matters described above are all known matters described in the above-mentioned Japanese Patent No. 5296729, and can be used as a guide mechanism for the shutter sheet of the present invention.

  Next, the details of the guide structure of the shutter sheet end portion of the present invention will be described. 4 to 7 show specific configurations of the present invention. As shown in FIGS. 4 to 6, in the present invention, belt-shaped members having a predetermined width are provided at both ends of the main body 2a which is the curtain body portion of the sheet 2. An end member 2b made of plastic (or belt-like) that can be elastically deformed is joined and attached by heat welding or adhesion.

  In this example, the front surface of the outer end portion of the sheet main body portion 2a and the back surface of the inner end portion of the end member 2b are overlapped and heat-pressed, and the end portion of the main body portion 2a is applied to the back surface side of the end member 2b at the time of pressure bonding. A gauge portion 2c is formed of a vertical ridge or protrusion that is positioned in contact with each other, so that the body portion 2a and the end member 2b can be accurately positioned during joining.

  Further, on the outer end portion of each end member 2b, an engagement protrusion 10 that is continuous in the form of a wire is formed integrally with the end member 2b. The engagement protrusion 10 is formed on the left and right sides of the engagement guide 21 having a C-shaped cross section. The end member 2b is inserted into the hollow portion between the front and rear walls parallel to the direction from the upper side or the lower side, and the end member 2b is inserted into the inside from the upper part or the lower part of the open end facing inward, and has a bowl shape in the direction facing the open end side It is latched by the hook portion 21a of the bent peripheral wall.

  As shown in FIG. 5, the engagement protrusion 10 has a cross-sectionally symmetric cross section, a V-shaped groove-shaped recess 10a is formed at an intermediate position in the left-right direction, and the front and left and right are the same single. The convex part 10b which makes an arc-shaped chevron cross section with the same height as an arc is formed by sorting back and forth, and is formed into a four-leaf clover-shaped cross section in plan view.

  The apex of the convex portion 10b is elastically pressed against the parallel front and rear wall surfaces in the engagement guide 21 at two points on the left and right, and the engagement protrusion 10 moves left and right and slides up and down inside the engagement guide 21. It is housed freely.

  As described above, the engagement protrusion 10 is in contact with the front and rear inner surfaces of the engagement guide 21 by the two protrusions 10b at the front and rear thereof, so that the guide operation is performed even when the seat is raised and lowered as compared with the one having a circular cross section. Is stable, wear is reduced, noise is suppressed, and the open end of the engagement guide 21 is also applied when an oblique overload is applied in the direction of arrow a in FIG. There is an advantage that the hook portion 21a on the side is pushed and opened without difficulty in the direction of the arrow b, and the engagement protrusion 10 is released.

  In addition, in order to improve the sliding of the engaging protrusion 10 in the engaging guide 21 during the up-and-down slide and the left-right vibration, when supplying a lubricant such as grease or oil into the engaging guide 21, The V-shaped groove-shaped concave portion 10a on the outer periphery of the cross section becomes an oil reservoir, and there is an advantage that the lubrication of the movement of the engagement protrusion 10 with respect to the engagement guide 21 can be maintained for a long period of time.

  FIG. 7 shows a cross-sectional shape when the end member 2b of the present invention is formed by extrusion molding or the like. In this example, the pair of left and right end members 2b have a symmetrical cross-sectional shape and the inner end portions are cut grooves. It is integrally formed through 2d. The cutting groove 2d is set to have a strength capable of being cut and separated manually (manual power) after molding.

  By molding in this way, there is an advantage that a pair of left and right end members 2b can be manufactured simultaneously by one molding. Also, when only one side is manufactured, the thickness becomes non-uniform as a whole, so when winding into a roll shape with a winding drum or the like after molding, the difference between the winding diameters of one end and the other end of the roll is increased while the cone shape is increased. Therefore, the length of one winding is greatly restricted, and the packaging itself is difficult.

  On the other hand, when the left and right integrated molding is performed as described above, the entire thickness becomes uniform, so when winding into a roll, it is wound in a straight or roll shape, so the limits for convenience of transportation, storage, packing, etc. There is an advantage that the amount of winding (roll diameter) can be increased up to near. This is not just a convenience for transportation and storage, but by making the cutting length per rod as long as possible, when taking materials of sheets of various lengths, the amount of edge material is small and material loss is reduced. With the advantage that it can be minimized. Even if the left and right end members 2b are rotationally symmetrical in the left-right direction, the entire thickness is uniform, so that substantially the same effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Sheet shutter 2 Sheet | seat 2a Sheet | seat main body 2b End member 2c Gauge part 2d Cutting groove 3 Support | pillar 10 Engagement protrusion 10a Groove-shaped recessed part 10b Groove-shaped convex part 11 Sheet guide 14 Outer rail (sheet guide)
16 Inner rail (seat guide)
17 Sheet return guide 21 Engagement guide 22 Inner locking part

Claims (6)

An elastically deformable synthetic resin engaging member that is accommodated in a pair of rail-like sheet guides (11) installed in parallel and is continuously moved and guided along the sheet guide (11). In the shutter sheet provided with the mating protrusions (10) at both ends, at least one groove-shaped recess in the cross section of the surface of the engagement protrusion (10) that contacts the front and rear inner surfaces of the sheet guide (11) A sheet shutter sheet guide structure comprising: (10a) and a chevron-shaped convex portion (10b) formed on both sides of the concave portion (10a) , the tip of which is slidably pressed against the front and rear inner surfaces .   The cross section of the engaging protrusion (10) is provided with one groove-like concave portion (10a) formed on both front and rear sides and two arc-shaped convex portions (10b) on the front and rear sides. The sheet shutter sheet guide structure according to claim 1.   The sheet shutter sheet guide structure according to claim 1 or 2, wherein the front and rear sides and the outer end side of the cross section of the engaging protrusion (10) are formed in a four-leaf clover shape that is symmetrical in the front and rear direction.   An engagement protrusion (10) is provided on the outer end of the belt-like end member (2b) to be joined to the end of the sheet body (2a) of the sheet shutter, and the sheet is joined to at least one side of the end member (2b). The sheet shutter sheet guide structure according to any one of claims 1 to 3, wherein a gauge portion (2c) is formed that includes protrusions that are positioned in contact with the end of the main body (2a).   The sheet shutter sheet guide structure according to claim 4, wherein the end member (2b) and the engaging projection (10) are integrally formed of an elastically deformable synthetic resin material. It provided a pair of end members (2b) having a symmetrical cross-sectional shape for the both side ends of the seat body (2a), via a disconnect separable cutting groove inner edge of the respective end member (2b) (2d) The connection end member used for the sheet shutter sheet guide structure according to claim 4 , wherein the connection end member is integrally formed .

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