JP5283035B2 - Screen winding mechanism - Google Patents

Description

  The present invention relates to a screen winding mechanism capable of winding a screen used as an announcement medium or a background and drawing it arbitrarily. More specifically, the present invention relates to a screen winding mechanism that allows a plurality of screens to be simultaneously wound around one winding roller and that any one of them can be displayed on the front surface.

  It has been proposed to use a screen taken up by a take-up roller as an advertising medium in a store or in a store or as a background for shooting in a shooting studio. For example, a screen-like advertisement medium may be hung next to the entrance of a store or outside a window, or may be stretched using a string or the like on a fixture installed on the site. Also, in shooting studios, install a take-up roller at a ceiling, wall surface, or height that fits outside the shooting range, select the screen with the color, design, and design required for shooting, and use it as a background. Sometimes.

  This type of screen is required to be able to change the advertisement content according to the time zone, period, season, etc., or to be replaceable according to the shooting target, shooting conditions, and the like. Therefore, in order to meet this demand, two winding rollers are arranged in parallel, and one end of the screen is connected to each winding roller so that the screen can be wound and unwound. There is a proposal that unwinds the screen connected to the other and winds the screen connected to the other winding pipe (Patent Document 1). Also, in a shooting studio, etc., many take-up rollers with different colors and designs are installed on the ceiling in advance so that the take-up roller can be selected or the screen for each take-up roller can be replaced as necessary. I have to.

Japanese Patent Laid-Open No. 4-80492

  However, if a plurality of take-up rollers are arranged side by side in front and rear, the projecting dimension from the wall surface of the store becomes large, and the cost becomes higher than that of an advertising device having one take-up roller. is there. Moreover, in the invention described in Patent Document 1, only up to two screens can be used interchangeably, and when it is desired to replace the screen, it is necessary to replace each roller.

  In addition, since the screen is directly attached to the take-up roller in the conventional screen take-up mechanism, the screen can be replaced with the take-up roller removed or only the screen is removed from the take-up roller and a new screen is again installed. It is necessary to attach to the winding roller. On the other hand, the take-up roller is usually installed at a high place that is not normally accessible. For this reason, it is common to replace the screen for each take-up roller using a stepladder or a scaffold, or to replace only the screen while leaving the take-up roller as it is. For this reason, the replacement operation of the screen is not complicated and simple, and has a problem that it takes time and effort.

  Moreover, since the work of replacing the take-up roller or the screen at a high place is an unstable work even if a stepladder or a scaffold is used, no one can easily replace the screen.

Also, when used outdoors, the bottom edge of the screen is fixed to a fixture installed on the site using a string, etc., or a heavy stone is suspended from the bottom edge of the screen, or a string is attached to a heavy stone on the ground. The screen is fixed by tying them together, etc., but when blown by a gust of wind or receiving a strong wind, the screen will be greatly beaten and lifted with heavy stones, or noise will be generated by flapping, There are problems such as tearing.
In addition, in applications where the amount and length of the screen fed out from the take-up roller are not constant, it is desirable to set a different drop amount for each screen. In this case, the feed amount is automatically determined as the set value. Can not do it.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a screen winding mechanism that can be easily replaced. It is another object of the present invention to provide a screen winding mechanism that can selectively expose a plurality of screens with a single winding roller. Furthermore, an object of the present invention is to provide a screen winding mechanism in which the screen is not greatly damaged or fluttered even when subjected to a gust of wind when used outdoors.

  In order to achieve such an object, the invention according to claim 1 supports a plurality of screens connected to each other so as to be able to wind up with a single take-up roller arranged so as to be able to rotate forward and backward by a rotating mechanism. In the screen winding mechanism, at least one discarded cloth is connected to the winding roller, and a joint material is provided at the lower end of the discarded cloth so that the screen can be detachably connected. While the screen is detachably connected through a material, the waste cloth is rotated by reversing the winding roller to hang the screen, and the joint material at the lower end of the waste cloth is exchanged from the storage box. The length of the screen including the length of the thrown-out cloth has a length that allows the screen to be lowered to a height that is easy to handle. When the lower end edge of the screen wound outside passes through the topmost part of the winding roller in the state of being wound up, the lower end edge of the next screen wound inside reaches the topmost part of the winding roller. The screens that have passed through the topmost part of the take-up roller previously have a relationship of being released from the take-up roller and depending on each other.

  Here, the plurality of screens may be attached to the take-up roller by at least one waste cloth and one joint material. Preferably, the waste cloth and the joint material are provided for each screen. is there.

  According to a third aspect of the present invention, the screen winding mechanism has a cylindrical edge at the lower end thereof, a coil spring is built in the cylindrical edge, and both ends of the coil spring are cylindrical. It is connected to a mooring ring arranged outside the edge, and is moored to a fixture installed on the outdoor site side through the mooring ring.

  Furthermore, the invention described in claim 4 is the screen winding mechanism according to claim 1 or 2, wherein the winding roller is a motor drive type, and it is detected that the lower end edge of the screen has passed the topmost part of the winding roller. Controls the rotation direction and rotation speed of the winding roller from the reference position, and controls the forward rotation of the motor in the direction of winding up the screen and the reverse rotation of the screen in the direction of lowering the screen. In addition, the output signal from each sensor is obtained and the motor is controlled in accordance with the stop position and rotation direction information stored in advance by teaching operation for each screen, and the lower edge of the screen selected by the switch or program is the winding roller. Pass the winding roller forward until it passes through the top and before the bottom edge of the next screen reaches the top of the winding roller. As a control device for controlling to drop to a position where the screen hanging down in front is set in advance by the reverse rotation of the over La, it is also possible to motorized screen mechanism.

  According to the screen winding mechanism according to claim 1, a plurality of screens are simultaneously wound on one winding roller, and the winding roller is rotated to lower the screen exposed to the forefront while switching. Therefore, it is not necessary to provide a take-up roller for each screen.

  Also, when replacing the screen, pull out the screen together with the joint material and the waste cloth, lower it from the storage box to a height where it can be easily replaced, and attach the joint material to the screen or the waste cloth against the joint material. Since the screen can be attached and detached without or including it, the screen can be replaced while standing without having to prepare a stepladder or scaffolding, and the screen can be replaced more easily and safely.

  According to the screen winding mechanism of the second aspect, when replacing the screen, the screen can be lowered while the replaced screen is switched to the front surface, so even if a plurality of screens are mounted. It is only necessary to remove the screen exposed on the front surface, the other screens do not get in the way, and the screen can be easily replaced.

  Further, according to the screen mechanism of the third aspect, even if a gust or strong wind acts on the screen, the movement of the lower edge of the screen is absorbed by the expansion and contraction of the coil spring, so that the screen flutters. There is nothing. In addition, if only one front surface is fixed, the remaining screens are sandwiched and pressed between the wall surface or the windows, so that the fluttering of all the screens can be suppressed. Therefore, it is suitable for the use of an outdoor screen mechanism such as a storefront advertisement.

  Further, according to the screen mechanism of the fourth aspect, it is possible to select an arbitrary screen by only operating the switch of the control device, automatically suspending it to a predetermined position, storing it, and switching the screen to be displayed on the front surface.

  Hereinafter, the configuration of the present invention will be described in detail based on embodiments shown in the drawings.

  1 to 7 show an example of an embodiment in which the screen winding mechanism of the present invention is applied as an advertising medium. The screen type outdoor advertising device of this embodiment is a chain winding type screen winding mechanism in which the winding roller is manually rotated. For example, while the winding roller is installed on a wall surface or a window frame outside the store, the screen The lower end is stretched by being anchored to an anchor member installed on the site, and the screen is used as an advertising medium. The screen winding mechanism of the present invention is not limited to use as the above-mentioned storefront advertisement. For example, by attaching a winding roller to any place such as a window, a ceiling, a wall, a beam, etc. It can be used as an advertising device for displaying information such as blindfold, partition, guidance display, etc., and can also be used as a shooting background for use in a shooting studio.

  The screen winding mechanism includes a winding roller 1, a waste cloth 2 having an upper edge 2a attached to the take-up roller 1, a joint material 3 attached to a lower edge 2b of the waste cloth 2, and the joint material. 3 includes a plurality of screens 4 having upper end edges 4a detachably mounted thereon, and a rotation mechanism 16 for rotating the take-up roller 1.

  The winding roller 1 has a substantially cylindrical shape, and both ends thereof are rotatably supported by a pair of left and right brackets 6 fixed to the storage box 5 with screws or the like. Each bracket 6 is installed in a position hidden behind the storage box 5 so that the take-up roller 1 is not exposed to the outside of the storage box 5 and enters the customer's field of view from the front side or gets wet with rain dew. Has been. One bracket 6 is provided with a chain winding type rotation mechanism 16 that is a drive source of the winding roller 1. This rotating mechanism is a pulley connected to the winding roller 1 via a clutch spring, and a pulley built in the box is rotated by using a chain 17 for operation wound around the pulley. The take-up roller 1 is provided so as to rotate forward or reverse. The clutch spring is interposed between the pulley and the take-up roller, so that the rotation of the pulley is transmitted to the take-up roller 1, but the take-up roller 1 is rotated by the weight of the first to fourth screens 4. Is not transmitted to the pulley, and when the rotation of the pulley by the operation chain 17 is stopped, both the forward rotation and the reverse rotation of the winding roller 1 can be prevented. Since the chain winding type rotation mechanism is a well-known technique, the detailed structure thereof is not shown.

  Two mounting grooves 1 a are formed on the outer peripheral surface of the winding roller 1 over the entire length of the winding roller 1. The attachment groove 1a is for attaching the waste cloth 2, and for example, the opening is formed narrower than the space behind the groove. In each mounting groove 1 a, for example, two pieces of discarded cloth 2 are respectively attached using a core material 7 that prevents falling off, and a total of four pieces of discarded cloth 2 are detachably fixed to the winding roller 1. ing. The length of each thrown cloth 2 is determined by the screen attachment means provided at the lower end (tip) of each thrown cloth 2 at an arbitrary position in the circumferential direction in a cross-sectional view when wound around the take-up roller 1, for example, the joint material 3. It is the length to be arranged. In this embodiment, the length relationship of the waste cloth 2 is set such that the joint members 3 are arranged at intervals of 90 °.

  The discard cloth 2 may be provided for each screen 4, or all the screens 4 may be attached to one discard cloth 2 and the joint material 3, or one sheet as in the present embodiment. Two screens 4 may be attached to the waste cloth 2 and the joint material 3. Except when the screen 4 is replaced, the screen 4 is not unwound up to the part of the cloth 2 when switching the normal screen. Therefore, even if each screen is attached to one joint member, In the state where the screen is completely wound up, the switching operation is the same as that of the present embodiment shown in FIGS. 1 to 4 as long as the lower end edges of the screens are sequentially shifted in the circumferential direction. Can do.

  The upper end 2a and the lower end 2b of the waste cloth 2 are provided with cylindrical edge portions (hereinafter referred to as cylindrical edge portions 2a and 2b) in which, for example, the edge of the waste cloth is folded and sewn (bag sewn). By providing a core material 7 larger than the opening of the mounting groove 1a and smaller than the space, the cylindrical edge 2a cannot be detached from the mounting groove 1a of the winding roller 1 in the vertical direction (screen moving direction). It has been. This upper cylindrical edge 2a is inserted into the mounting groove 1a of the take-up roller 1 and then the core material 7 is inserted into the cylindrical edge 2a, thereby preventing the fitting groove 1a from coming off. Configure. Further, the cylindrical edge 2b at the lower end of the cloth 2 is inserted into a first mounting groove 3a formed in the joint material 3, and the core material 8 is inserted into the cylindrical edge 2b so that the first A joint that prevents the fitting groove 3a from coming off and allows the joint material 3 to slide in the width direction with respect to the waste cloth 2 is configured. When the waste cloth 2 is wound around the take-up roller 1, it has such a length relationship that the slide members 3 at the lower ends thereof are arranged on the take-up roller every 90 °. That is, in the case of this embodiment, since two discard cloths 2 are attached to one attachment groove 1a, the length in which these are disposed every 90 °, that is, the circumferential length of 90 ° It is provided so that the length is different by that amount. The length of the cloth 2 is determined in consideration of, for example, the ease with which the screen 4 can be replaced, but at least the height at which the joint material 3 is easy to replace the screen, for example, the height of an adult's line of sight. It is preferable to have a length that descends to a certain extent (about 150 to 170 cm from the ground). The discarded cloth 2 and the joint material 3 at the lower end thereof are in a state of being wound around the take-up roller 1 during normal use other than when the screen 4 is replaced, and may be exposed outside the storage box 5. Absent. Therefore, normally, only the screen 4 is pulled out from the storage box 5, and the aesthetic appearance is not impaired.

  The joint material 3 has substantially the same width as the screen 4. In the case of this embodiment, the joint material 3 has at least two first and second mounting grooves 3a and 3b formed over the entire length of the joint material 3. A cylindrical edge 2b at the lower end is provided so that the cylindrical edge 4a at the upper end of the screen 4 is detachably attached to the other attachment groove 3b. As shown in FIG. 4, each of the first and second mounting grooves 3a and 3b is formed such that the opening portion of the groove entrance is narrower than the space portion at the back of the groove. Therefore, by inserting the core members 8 and 9 through the cylindrical cloths 2b and 4a at the edges of the waste cloth 2 or the screen 4 or by inserting them from the side openings of the grooves 3a and 3b, A joint that can be easily attached and detached can be configured by inserting the core members 8 and 9 into the thrown-in cloth 2 and the cylindrical edges 2b and 4a of the screen 4 inserted in advance into 3b. The first mounting groove 3 a is formed on the upper end surface of the joint material 3, and the second mounting groove 3 b is formed on the lower end surface of the joint material 3. Here, the cross-sectional shape of the joint material 3 is not particularly limited. For example, in the case of this embodiment, the joint material 3 is formed of an aluminum extruded material formed with a curved surface on the front side and a flat surface on the back side. ing.

  The screen 4 has a required size according to its application, and cylindrical edges 4a and 4b are formed by bag sewing at the upper and lower ends. In this embodiment, four screens, that is, four types of advertisements are provided so as to be wound around one winding roller 1. Here, the four screens 4 are overlapped with each other in the suspended state so that only the screen exposed at the forefront can be seen. Even if each screen is set to the same length, the screen behind is shorter than the screen on the front side because the screen descends by the amount of passing through the take-up roller 1 so that it is positioned on the front side. The cylindrical edge 4b at the lower end of the screen 4 that rises up, and is invisible from the front. In the case of this embodiment for outdoor advertising devices, the screen displays, for example, limited-time products and seasonal special menus, especially advertisements for products with particular emphasis, and switches them for each time zone. It is used as displayed.

  The cylindrical edge 4a at the upper end of the screen 4 is inserted into the second mounting groove 3b of the joint material 3, and the protrusion whose tip is bulged by inserting the core material 9 into the cylindrical edge 4a is formed. The joint is formed to prevent the screen 4 from being pulled out from the second mounting groove 3b in the drawing direction and to allow the screen 4 to slide in the width direction with respect to the joint material 3. A pipe 10 that keeps the shape of the lower edge of the screen 4 and also serves as a weight is inserted into the cylindrical edge 4 b at the lower end of the screen 4. In addition, as each core material 8 and 9, in order to make insertion into each cylindrical edge 2b and 4a easy, use of a piano wire etc. is preferable, for example. Further, the joint material 3 may be fixed to the discarded cloth 2 by caulking or the like, may be fixed to the screen 4 side, or may be structured to be detachable from both sides. A connection structure that can be attached to and detached from at least one of the screen 4 and the disposal cloth 2, for example, a connection structure that can slide in the width direction is sufficient. The means for detachably attaching the joint material 3 and the screen 4 is not limited to the combination of the attachment groove 3b, the cylindrical edge 4a and the core material 9 as in the present embodiment. A clip mechanism that firmly clamps the cylindrical edge 4a at the upper end of the screen 4 by a spring is formed at the lower part of the joint material 3, and is attached detachably by a method of sandwiching the cylindrical edge 4a at the upper end of the screen 4. Also good.

  Each screen 4 incorporates a coil spring 11 in a cylindrical edge 4b at the lower end thereof, and both ends of the coil spring 11 are connected to a mooring ring 12 disposed outside the cylindrical edge 4b, respectively. 12 and a fixing tool / anchor member 15 installed on an outdoor site. In this embodiment, as shown in detail in FIGS. 5 to 7, for example, a pipe 10 serving as a weight is inserted into the cylindrical edge 4 b at the lower end of the screen 4, and a coil spring 11 and both ends thereof are inserted into the pipe 10. The connecting wire 13 to be connected is built in, and then connected to the mooring ring 12 arranged outside the pipe 10. Furthermore, the mooring ring 12 is elastically provided with a certain tension via the coil spring 11 by being moored to an anchor member 15 previously installed on the site or the like via a connecting hook 14 having a turning back function. The lower end of the screen 4 is anchored to the anchor member 15. Therefore, even if an external force such as wind acts on the screen 4, the movement is absorbed by the expansion and contraction of the coil spring 11, so that the screen 4 does not flutter. In addition, when it is stretched diagonally at the storefront, such as a sunscreen at a storefront, the next screen 4 hanging in the vertical direction is also moored and fixed to the fixture, so that the screen 4 behind it is fixed. You can suppress fluttering.

  According to the screen winding mechanism configured as described above, it can be used as an advertising device as follows.

(Ad display)
First, when the operation chain 17 of the rotation mechanism 16 is operated and the screen 4 on which the advertisement content desired to be exposed by rotating the take-up roller 1 is hung down, the lower edge 4b of the next screen 4 is dropped. When the operation chain 17 is operated in the reverse direction before reaching the top of the take-up roller 1 and the take-up roller 1 is rotated in the reverse direction to unwind and lower the screen 4, All screens begin to descend with the screen in the foreground. As a result, the selected screen descends with the front surface exposed. At this time, the lower end edge 4b of the screen 4 is slightly below the predetermined stop position, that is, a mooring ring arranged so as to hang down from both ends of the lower end edge 4b of the screen 4 to the connecting hook 14 connected to the anchor member 15. 12 is lowered to a position where it can be easily hooked. Thereafter, the operation chain 17 is operated to rotate the winding roller 1 forward so that the screen 4 is slightly wound up, and the coil spring 11 is extended to apply tension. As a result, the screen 4 is stretched. This is a state in which the screen 4 is elastically supported, so even if a gust or strong wind blows, the screen 4 can carry away the wind. I will not let you. Further, the screens other than the foremost screen do not flutter between the foremost screen 4 moored to the anchor member 15 and the wall surface of the building, and therefore do not necessarily have to be moored to the anchor member 15. . Further, when the front screen is inclined by being anchored to an anchor member that is greatly separated from the wall surface of the building, the screen that is in the next suspended state is anchored to the anchor member 15 installed at a location close to the wall surface. Thus, it is preferable to eliminate fluttering of the second and subsequent screens.

(Advertisement switching)
If you want to switch the contents of advertisements by exposing other screens, do the following. First, the winding roller 1 is reversely rotated by operating the operation chain 17 to lower the screen 4 to give a slack to the foremost screen 4 anchored to the anchor member 15 and from the anchoring rings 12 at both ends of the lower end edge 4b. Remove the connecting hook 14. Thereafter, the operation chain 17 is operated again, the winding roller 1 is rotated forward, and the screen 4 is wound up. At this time, all the screens 4 are wound up. However, since each screen 4 is wound on the outer diameter side so as to sequentially overlap the other screens, the lower end of each screen is caused by the difference between the inner and outer diameters. The position of the edge 4b is different. For this reason, the lowermost edge 4b of the screen 4 at the rearmost side reaches the top of the winding roller earliest, and then the lower edge 4b of the screen 4 at the front side thereof reaches the lowermost edge 4 in order. It is wound up so as to reach the top of the take-up roller 1. When the winding roller 1 is further rotated forward in this state, the lower end edge 4b of the screen 4 that has passed through the topmost part of the winding roller 1 falls from the winding roller 1 and hangs down. The screen 4 immediately after the lower end edge 4b passes is disposed on the forefront.

  Therefore, the screen 4 to be exposed on the foremost side hangs down, and before the lower end edge 4b of the next screen reaches the topmost part of the winding roller 1, the operation chain 17 is operated in the reverse direction so that the screen 4 When the winding roller 1 is rotated in the reverse direction in the direction of unwinding and lowering, all the screens 4 begin to descend while the screen 4 immediately after the drooping is left in the foreground. Then, the anchoring ring 12 is anchored to the anchor member 15 via the connecting hook 14 in the same manner as in the installation of the advertising device described above. Thereby, the selected screen is exposed to the front, and the switching of the advertisement content is completed.

(Screen replacement)
Next, a method for replacing the screen 4 will be described.
First, the winding roller 1 is reversed to unwind all the screens 4 and hang down, and the joint material 3 at the lower end of the waste cloth 2 attached to the winding roller 1 is completely exposed from the storage box 52. And lower it to a height where it can be easily replaced. Then, by sliding the screen 4 in the width direction with respect to the joint material 3, the screen 4 is removed in a state in which the joint material 3 is left on the discarded cloth 2. At this time, it is desirable that the core member 9 be removed from the cylindrical edge 4b at the lower end of the screen 4 in advance because the slide in the joint member 3 of the screen is easy. Of course, when the screen 4 to be replaced is anchored to the anchor member 15, the connecting hooks 14 are removed from the anchoring rings 12 at both ends, and then the screen 4 is detached from the joint material 3.

  Then, the cylindrical edge 4a at the upper end of the new screen 4 is slid into the second mounting groove 3b of the joint material 3, and the core material 9 is further inserted to prevent the cylindrical edge 4a from falling off. After the new screen 4 is attached to the joint material 3 in this way, the take-up roller 1 is rotated forward to wind up the screen 4 at least until the waste cloth 2 and the joint material 3 are hidden in the storage box 5. Replacement work is completed. At this time, the waste cloth 2 and the joint material 3 are lowered to a height at which the operator can easily work, for example, the eye height, so that the replacement work of the screen 4 is performed very efficiently. It should be noted that the screen 4 may be attached / detached / replaced for each joint material 3 in some cases, and only the waste cloth 2 may be left on the winding roller 1.

  When only a part of the screens 4 is to be replaced, it is preferable to lower the screen 4 to a height at which it is easy to replace the screen after the screen to be replaced is brought out on the front surface. Therefore, first, similarly to the advertisement content switching operation, the winding roller 1 is rotated forward by the operation of the operation chain 17, and the lower edge 4b of the screen 4 to be replaced passes through the top of the winding roller. While dropping and drooping forward, before the lower end edge 4 b of the next screen reaches the top of the winding roller 1, the winding roller 1 is reversely rotated to lower all the screens 4. When the take-up roller 1 is rotated in the reverse direction, all the screens start to descend with the screen immediately after hanging down being the foremost surface. Therefore, the screen replacement work can be performed in front of the screen to be replaced.

  Here, even when the length of the waste cloth 2 is lowered to a position where the joint material 3 can be easily replaced, it is ensured that the waste cloth 2 overlaps the winding roller 1 and remains. If any screen is placed on the front by screen switching operation in the screen winding state and then lowered to a position where the screen can be easily replaced, any screen to be replaced will be Therefore, it is easy to replace the screen.

  The manual screen winding mechanism of the present embodiment has been mainly described when applied as an outdoor advertising device, but is not particularly limited to this, and is also used as an indoor advertising device or a studio photography background. can do. In this case, unlike outdoor use, it is not necessary to consider the influence of a strong wind, and therefore it is not necessary to provide a coil spring and a mooring ring on the pipe at the lower edge of the screen.

  Next, FIGS. 8 to 10 show a second embodiment of the present invention. In this figure, the same members as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. This embodiment is different from the first embodiment only in that the winding roller rotating mechanism (winding device) is a gear type. In addition, since the gear type rotation mechanism using a crankshaft is a well-known technique, illustration of the detailed structure is abbreviate | omitted.

  The screen winding mechanism of this embodiment is operated by a crankshaft 19 as a rotating mechanism of the winding roller 1. Although the detailed structure of the rotating mechanism 15 is not particularly illustrated, a first bevel gear is attached to the end of the winding roller 2 and a second shaft connected to the crankshaft 19 via a hook portion 18. The bevel gear meshes with the first bevel gear, the second bevel gear is rotated from below by the crankshaft 19 to rotate the winding roller 2, and the screen 4 is pulled out from the winding roller 2, or the screen 4 is pulled into the winding roller. 2 is taken up. Here, the crankshaft 19 is preferably detachable from the winding roller 1 in order to prevent mischief and the like.

  Next, as still another embodiment of the present invention, FIGS. 11 to 17 show an example in which a motor-driven screen winding mechanism is used as a background for studio photography. In other embodiments described below, the same components as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Further, in the present embodiment, the screen drawing position is not fixed, and the winding roller 1 is rotated using the motor 22. Therefore, it is preferable that the lower end of the screen 4 is not restrained without being anchored to the fixture. . Therefore, a weight bar (not shown) serving as a pyramid is provided at the lower end of each screen to eliminate slack.

  In the screen winding mechanism of this embodiment, the winding roller 1 is a motor-driven type, and a sensor that detects that the lower end edge 4b of the screen 4 has passed through the top of the winding roller 1 (hereinafter referred to as an origin sensor). 20), a sensor 21 for detecting the rotation direction and the number of rotations of the winding roller 1 from the reference position, a forward rotation of the motor 22 in the direction of winding up the screen 4 by the switch operation, and a reverse direction in which the screen 4 is lowered. The motor 22 is controlled according to stop position and rotation direction information stored in advance by teaching operation for each screen 4 by obtaining output signals from the sensors 20 and 21 and selected by a switch or a program. The lower edge 4 b of the screen 4 passes through the top of the winding roller 1, that is, the position of the origin sensor 20, and the lower edge 4 of the next screen 4. Until the roller 4 reaches the top (the position of the origin sensor) of the take-up roller 1, the take-up roller 1 is rotated in the forward direction, and then the take-up roller 1 is rotated in the reverse direction so that the screen 4 hanging down on the front surface reaches the preset position. And a control device 26 that controls to descend.

  The origin sensor 20 employs a proximity switch, for example, a magnetic proximity switch in which a seed switch and a magnet are combined, and detects a magnetic detection body (for example, an iron plate) 23 sewn on the lower edge of the screen 4 without contact. By doing this, it is detected that the lower end edge 4b of the screen 4 has passed the topmost part of the winding roller 1. The magnetic proximity switch 20 is attached to a frame 25 that supports the take-up roller 1 via a bracket 24, and is located at the top of the take-up roller 1 or slightly in front of it (position passing through the top of the take-up roller 1). is set up. Therefore, a detection signal is output when the detection body 23 sewed on the lower edge 4 b of the screen 4 passes through the topmost part of the winding roller 1.

  For example, a rotary encoder is employed as the sensor 21 that detects the rotation of the winding roller 1. In the case of this embodiment, an incremental encoder is employed, and the control device (computer including the central processing unit 27) is set with the position at the time of detection of the detection body 23 at the lower edge of the screen by the magnetic proximity switch 20 as a reference position. ) The rotation direction and the number of rotations of the winding roller 1 are detected by counting the number of pulses with a high-speed counter 30 on the 26 side. The rotation direction and the number of rotations of the winding roller 1 counted by the high-speed counter 30 are stored in the counter memory 28 in association with the teaching content, and are counted according to the operation command content selected by operating the panel switch attached to the control device. The winding roller 1 is provided so as to be driven by a motor in the number of pulses read from the memory 28 and in the rotation direction. The rotary encoder 21 is mounted so as to rotate in conjunction with the winding roller 1 directly or indirectly.

  The control device 26 includes a central processing unit 27 having a ROM storing a control program, a counter memory 28, a teaching memory 29 for storing teaching contents, a high-speed counter 30, and a No. for screen selection. 1-No. Up to 4 panel switches 31a to 31d, an on-floor position switch 32 for giving an instruction to lower the selected screen to a preset position on the floor, and an instruction to lower the selected screen to a preset extension position A panel extension switch 34, a panel storage switch 34 for issuing a command to wind up and store the selected screen to the origin position, a panel up switch 35u for raising the selected screen by an arbitrary amount, and the selected screen A panel down switch 35d for lowering by an arbitrary amount and a stop switch 36 for executing an operation for associating the stop position of each screen 4 with the stop operation are provided. The panel up switch 35u winds up the screen while the switch is pressed. The panel down switch 35d continues to display the screen while the switch is pressed. Further, the control device 26 is usually provided with an emergency stop switch with a release function (not shown), a power switch (not shown) and the like as necessary. In this embodiment, the screen 4 may be referred to as a panel.

  When the stop switch 36 is pressed for a long time, for example, for about 3 seconds, the floor position panel switch 32 and the panel extension switch 34 blink, and the current stop position is selected by selecting one of the switches 32, 34. The switches are programmed to be stored in the teaching memory 29 and the counter memory 28. For example, in the case of setting the floor position, the floor switch is raised when the stop switch 36 is pressed and held while the screen 4 is lowered to a desired position on the floor, and the floor position panel switch 32 and the panel extension switch 34 flash. By pressing the setting switch, the floor position is stored in the counter memory 28 and the floor position selection operation is stored in correspondence with the teaching memory 29. On the other hand, in the case of setting the panel extension, the floor switch is extended when the stop switch 36 is pressed for a long time when the screen is pulled down to a desired position and the floor position panel switch 32 and the panel extension switch 34 flash. When the switch 34 is pressed, the panel extension position is stored in the counter memory 28 and the panel extension position selection operation is stored in correspondence with the teaching memory 29.

  The panel storage switch 24 is stored to the origin position regardless of the position of the screen 4. That is, the detection body 23 at the lower edge of the screen that operates the proximity switch 20 is wound up to the top of the winding roller 1, that is, the position facing the magnetic proximity switch 20. Moreover, the first screen is always in front when stored. In other words, except for the initial setting, the first screen is disposed closest to the screen in the housed state during normal operation.

According to the screen winding mechanism configured as described above, initial setting is first performed by teaching. The initial setting is performed individually for each screen.
First, a selection panel, that is, a screen (panel) to be displayed on the front surface is determined (S01). At this time, it is programmed to enter the initial setting mode by pressing and holding the selection panel switches 31a to 31d (for example, 2 seconds or more). For example, panel no. The initial setting of the first screen assigned to 1 will be described as an example. First, panel no. Press 1 to select the first screen. Next, the floor position is set as a teaching operation (S02). To set the position on the floor, the first screen 4 is lowered by pressing the panel down switch 35d. Since the screen 4 is lowered while the panel down switch 35d is being pressed, the panel down switch 35d is released / released when it is determined that the lower edge 4b of the screen has reached the desired position on the floor. To stop the screen 4 at an arbitrary position (S02 _-1 ). Then, when start blinking and the floor position switch panel 32 and a panel extension switch 34 by the stop button 36 long press _{(S02 -2),} press the floor position switch 32 _{(S02 -3)} fast counter 30 at that time Is stored in the teaching memory 29 and the counter memory 28 of the control device 26 as the position on the floor.

In setting the extended position (S03), the panel down switch 35d is pushed and the screen 4 is lowered and pulled out to an arbitrary position and length while the panel down switch 35d is being pressed. Then, to stop at an arbitrary position by releasing and opening the panel down switch 34d _(S03 -1). Thereafter, when by pressing the stop button 36 long, and _{(S03 -2)} floor position panel switch 32 and panel extension switch 34 begins to flash, press the panel extension switch 34 _{(S03 -3)} similarly control the extended position and stores device _(S03 -4). Thereby, the setting of the position on the floor and the extended position for the first screen is completed. Therefore, the panel storage switch 34 is pushed to raise the nest or the clean 4 and wind up completely (S04). At this time, the screen cueing operation is performed so that the first screen always comes to the front and stops (S04 _-1 ). Of course, when there is only one position to be set, or when there are several positions depending on the case, this can be dealt with by changing the operation buttons and combinations accordingly.

  By sequentially performing this initial setting operation on each screen, automatic positioning of all screens can be performed. Here, the screen is selected by counting the number of detected pulses from the reference when the origin sensor 20 detects the detection body 23 at the lower end of the first screen and counting the number of detected pulses from the reference. Recognize the number. For example, when the origin sensor 20 detects the detection body 23 at the lower end of the first screen, all numerical memories are cleared and a flag for passing the first screen is set. The number of detected pulses is counted to recognize the corresponding screen number. For example, when the first screen is selected from the state where the third screen is selected, (3) → (2) → (1), from the state where the first screen is selected to the fourth. When selecting the 4th screen, (1)-> (4)-> (3)-> (2)-> (1)-> (4), the 4th screen is selected and the 3rd screen In the case of selecting (4) → (3) → (2) → (1) → (4) → (3), the second screen is selected from the state where the third screen is selected. In the case of selecting the first screen from the state in which the second screen is selected (3) → (2) → (1) → (4) → (3) → (2) (2) → (1) is selected by rotating. Further, the raising / lowering operation of the selected screen is performed by detecting the rotation direction and the rotation speed from the position (reference position) of the origin sensor 20 for each screen. When all screens have been initially set, the initial setting operation is completed.

  With respect to the screen for which the initial setting has been completed as described above, an arbitrary screen selected by the switch operation is automatically arranged on the front surface and can be automatically lowered to a predetermined position. . That is, when the selected panel is determined (S1), the screen of the corresponding screen number is hung down to the front by the above-described screen-out operation based on the detection signal of the origin sensor 20 (S2). Accordingly, either the position on the floor or the extended position is selected, and the screen is automatically lowered to a predetermined position (S3). Of course, when fine adjustment of the screen length is required, the necessary length adjustment is performed using the panel up switch 35u or the panel down switch 35d.

  For example, when a target screen, for example, the first screen is selected with a button, and then a selection operation, for example, the on-floor position switch 32 is selected, the position set in advance by teaching with the first screen placed on the front surface. And automatically stops at that position. When the panel extension switch 33 is further pressed from the floor position, the first screen is further lowered and lowered to the panel extension position set in advance by teaching, and then automatically stops at that position. Also, if there is any inconvenience at these setting positions, the height or length (extension position) etc. can be adjusted by operating the panel up switch 35u or the panel down switch 35d as necessary to raise or lower the screen. Can be adjusted. In this case, the information on the floor position and the panel extension position stored in the counter memory 28 is not cleared.

  When panel storage is selected by operating the panel storage switch 34, the winding roller 1 is reversed by driving the motor 22 to wind up the screen 4 to the origin position (screen cueing operation). At this time, when the panel is stored, the rotation is controlled so that the first screen is always in front. For example, even if the selected screen is No. 1, it continues normal rotation after the completion of winding, and stops when No. 1 appears again. Therefore, when a screen is selected in the stowed state, the control device 26 determines the number of the selected screen from the first position screen until the output of the origin position sensor 20 in the corresponding order is obtained. After being obtained, the motor 22 is reversed to lower the screen. Further, the panel selection switches 31a to 31d can be pressed directly without selecting (without pressing) the panel storage switch 34. In this case, the screen is rolled up and simultaneously rotated to the selected screen and stopped. At this time, as described in the initial setting, when the first screen passes, the counter memory 28 is once reset and counted from the beginning so that the screens in the corresponding order are arranged on the front surface. . For example, no. No. 3 with the panel 3 selected. When selecting the panel 4, it is known that the screen to be rolled up is the third, so (2) → (1) → (4) → (3) → (2) → (1) → ( Switches to 4). At this time, when the second magnetic body (detection body) is detected, the memory is once cleared, and then (1) is confirmed with the fourth detection signal, and (4) with the next detection signal. The control is performed such that the forward rotation of the winding roller 1 is stopped and then the screen 4 is reversely rotated and the screen 4 is lowered.

  The electric screen winding mechanism configured as described above is preferably used as a shooting background in a shooting studio, for example. In this case, the optimum background fabric can be selected according to the shooting scene, switched to the front, and then used after being lowered. Of course, the electric screen winding mechanism of this embodiment can also be used as an indoor advertising device or the like. In this case, for example, by using a timer or the like together, or using a proximity sensor or the like, the advertisement content can be changed by switching the screen at every set time or when a person approaches.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, four screens may be connected to one joint material at one place, or four grooves may be provided in one joint material, and the screen may be connected to each groove.

  Further, in the above-described embodiment, as the screen attaching means at the lower end of the discarded cloth, the upper end edge 4a of the screen 4 is combined with the core material 9 for preventing falling off and the groove in the screen width direction to be slidably connected in the screen width direction. Although the joint material 3 is employed, the present invention is not particularly limited thereto. For example, the upper end edge of the screen 4 is provided with a clip mechanism with a built-in spring that firmly holds the upper end edge 4a of the screen 4 at the lower portion of the joint material 3. You may make it attach so that removal is possible by the method of pinching 4a.

  In some cases, the take-up roller has a D-shaped cross-sectional shape, and the joint material is located on the flat surface portion where the circular outer peripheral surface is missing as the discarded cloth is wound up, forming a substantially circular shape. Therefore, the winding roller 1 can be rotated with good balance without breaking the winding shape, and the occurrence of vibration and noise can be suppressed.

  Further, the use of the screen winding mechanism mentioned as the above embodiment is not limited to the background for advertisement and photography, but is blindfolded in a store, indoors, etc. (for example, blindfolded and partitioned at a business corner, etc.), a show window It can be used as a background for a cash register, a guidance display (for example, reception of the XX academic society, entrance of the XX exhibition, etc.), interior, etc.

  In the above description, the screen 4 is hung straight down from the take-up roller 2. However, the screen 4 may be pulled out horizontally or obliquely as necessary, or the screen 4 may be extended. The curved surface may be widened by drawing it out along a curved guide or the like.

It is a front view which shows 1st Embodiment which applied the screen winding mechanism of this invention to the screen type | mold outdoor advertising apparatus. FIG. 5 is a cross-sectional view of the storage box of the advertising device, with the rotation mechanism and the screen viewed from the side. It is a top view of the advertising device. It is an expanded sectional view which shows the relationship between a winding roller, a waste cloth, a joint material, and a screen. It is a front view which shows the means for mooring a screen and the lower end of a screen to a fixing tool. It is an enlarged view which shows the relationship between the coil spring inserted in the cylindrical edge part of the lower end of a screen, a mooring ring, and a wire. It is a side view which shows the means for mooring a screen and the lower end of a screen to a fixing tool. It is a front view which shows 2nd Embodiment which applied the screen winding mechanism of this invention to the screen type | mold outdoor advertising apparatus. FIG. 5 is a cross-sectional view of the storage box of the advertising device, with the rotation mechanism and the screen viewed from the side. It is a front view of the handle for rotating the winding roller in the advertising device. It is a perspective view which shows embodiment which applied the screen winding mechanism of this invention to the background apparatus for electric studios. It is a front view of the background apparatus for studios. In the plan view of the studio background device, the mounting bracket is not shown. It is a cross-sectional view in the winding roller part of the background apparatus for studios. It is a block diagram which shows an example of the control apparatus of the background apparatus for studios. It is a flowchart figure of the control program of the background apparatus for studios.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding roller 2 Disposable cloth 3 Joint material 4 Screen 4a The upper edge of a screen (tubular edge)
4b Bottom edge of screen (tubular edge)
DESCRIPTION OF SYMBOLS 10 Pipe 11 Coil spring 12 Mooring ring 13 Connection wire 14 Connection hook 15 Fixing tool (anchor member)
16 Rotating mechanism 20 Sensor (origin sensor) that detects passing through the top of the take-up roller
21 Encoder 22 Sensor (encoder) for detecting the rotation direction and rotation speed from the reference position of the take-up roller
23 Magnetic body (detection body)
26 Control Device 27 Central Processing Unit 28 Counter Memory 29 Teaching Memory 30 High Speed Counter

Claims (4)

In a screen winding mechanism in which a plurality of screens are connected to each other and supported so as to be able to be wound in a stacked manner with respect to one winding roller that is arranged to be rotated forward and backward by a rotating mechanism, the winding roller includes At least one discarded cloth is connected, and a lower end of the discarded cloth is provided with a joint material that allows the screen to be detachably connected, and the screen is detachably connected through the joint material, The waste cloth has a length that causes the screen to hang down by reversing the winding roller, and has a length for lowering the joint material at the lower end of the waste cloth from a storage box to a height that allows easy replacement work. The length of the screen including the length of the discarded cloth is the state of the screen wound on the outside in a state where all the screens are wound up by the rotation of the winding roller. When the lower edge of the next screen wound inside the end roller passes the top of the winding roller before it reaches the top of the winding roller. A screen winding mechanism having a mutual relationship in which the screens of the screens are released from the winding roller and hang down. The screen winding mechanism according to claim 1, wherein the discard cloth and the joint material are provided for each screen. The screen has a cylindrical edge at the lower end thereof, and a coil spring is built in the cylindrical edge, and both ends of the coil spring are respectively connected to a mooring ring disposed outside the cylindrical edge. The screen winding mechanism according to claim 1, wherein the screen winding mechanism is moored to a fixture installed on the outdoor site side through the mooring ring. The take-up roller is motor-driven, and a sensor for detecting that the lower edge of the screen has passed the topmost part of the take-up roller, and a rotation direction and a rotation speed from the reference position of the take-up roller are detected. A sensor that controls the forward rotation of the motor in the direction of winding up the screen and the reverse rotation of the screen in the direction of lowering the screen, and obtains an output signal from each sensor in advance for each screen. The motor is controlled according to the stop position and rotation direction information stored by the teaching operation, and the lower edge of the screen selected by the switch or program passes through the top of the winding roller, and the lower edge of the next screen is The winding roller is rotated forward until it reaches the top of the winding roller, and then the winding roller is rotated in the reverse direction to hang down on the front surface. The screen according to claim 1 or 2 wherein the screen winding mechanism in which a control device for controlling to drop to a preset position.