JP3606509B2 - Sheet winding and unwinding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet take-up and feeding device that can be suitably used for a sheet shutter or the like that is installed at an entrance / exit of a building such as a factory or a warehouse.
[0002]
[Prior art]
Conventionally, sheet shutters installed at entrances and partitions of buildings such as factories and warehouses are provided with a flexible shutter sheet on a take-up drum so that the sheet can be taken out, and the sheet is placed along a gate-shaped frame. It is configured to move up and down.
In addition, the sheet has a plurality of core members that prevent bending in the width direction in the vertical direction, and a cylindrical take-up drum that is driven to rotate forward and backward by a drive motor. Is provided so as to be able to take up and rotate in a state in which it is attached and fixed by an attaching screw.
[0003]
[Problems to be solved by the invention]
However, in the sheet shutter having the conventional configuration as described above, a plurality of core members are horizontally disposed and a sheet having a heavy weight structure is wound around a winding drum having a cylindrical cross section, so that the sheet is wound at a high speed. Since the core material is easily deformed due to the impact that the core material comes into contact with the surface of the winding drum violently, the winding drum has a cylindrical body such as a large-diameter and thick PVC pipe. Accordingly, the take-up drum becomes large and large, and the take-up diameter of the sheet becomes large. Thus, there are disadvantages such that it is difficult to collect the sheet shutter in a compact manner and to further increase the speed of take-up and take-up of the sheet.
In addition, when a base sheet is attached to a cylindrical winding drum with a mounting screw, when the heavy sheet is wound at a high speed, the sheet weight and inertia force tend to concentrate on the mounting and fixing portion. The means for fixing or fixing the sheet with the fixing screw has problems such as complicated and inefficient maintenance work when the sheet is replaced.
[0004]
[Means for Solving the Problems]
In the sheet winding and unwinding structure according to the present invention for solving the above-mentioned conventional problems, first, one end of the sheet 2 is fastened and wound around the winding drum 3 rotated forward and backward by the drive motor 4. In the winding and unwinding structure, a plurality of locking holes 7 are formed in the circumferential width direction of the winding drum 3.Let it penetrate inside and outside the drum plate (30)A plurality of engaging portions 70 that are formed and inserted into the base portion on the winding side of the sheet 2 so as to correspond to the locking holes 7 and inserted from the outside of the winding drum 3 are provided. And, the seat 2 is detachably attached to the take-up drum 3 by engaging and disengaging the engaging portion 70 with the engaging hole 7.
[0005]
Second,The winding drum 3 is formed by bringing both ends of a curved drum plate 30 curved into contact with each other, and a locking hole 7 is formed in the overlapping contact portion of the drum plate 30.It is characterized by that.
[0006]
Third,The engaging portion 70 is formed integrally with the mounting bar 34 that supports the base portion on the winding side of the sheet 2.It is characterized by that.
[0007]
Fourth, a mounting bar 34 is provided along the width direction at the base of the seat 2, the mounting shaft 72 is inserted through the mounting bar 34, and the cylindrical engaging portion 70 is connected to the mounting shaft 72.Has a buttocks (70a)By inserting and fastening the mounting seat 73, the mounting bar 34 is provided with an engaging portion 70 that engages with the locking hole 7.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a sheet shutter 1, and a shutter frame 1 a of the sheet shutter 1 includes a hollow cylindrical sheet case 10 that accommodates a later-described sheet winding and unwinding structure, and a horizontal frame 12. The upper part is composed of left and right side frames (pillars) 11 and 11 that are connected and supported, and the seat case 10 is mounted and fixed on the horizontal frame 12 so that it becomes a gate type frame as a whole. .
The sheet case 10 accommodates a sheet take-up / feed-out structure in which the sheet (shutter) 2 is wound around a polygon-shaped (octagonal in the illustrated example) take-up drum 3 so that the sheet can be taken out and rotated. The both sides of the side frame 11, 11 are fitted with both sides of the seat 2 on the feeding side so as to be movable up and down, and the shutter frame 1 a is erected at the entrance of a building or the like so that the entrance is opened and closed with the seat 2. The sheet shutter 1 is installed and configured.
[0009]
Hereinafter, the detailed configuration will be described. The seat case 10 is formed in a hermetically sealed manner by fitting and fixing the end plates 13 and 13 to both ends of the hollow cover frame so as to be detachable. A cylindrical drive motor 4 that can be accommodated in the end of the take-up drum 3 is detachably fixed to the right end plate 13 via an attachment screw, and the drive motor 4 is driven by a sheet take-up and feeding structure. This makes it easy to perform attachment / detachment replacement and maintenance work for the seat 2 and the like.
The sheet 2 is formed on the upper end (base side) of a rectangular curtain made of a synthetic resin material having translucency and flexibility along the axial direction of the take-up drum 3. The sheet 2 is fixed to the side surface 3b, and the sheet drum 2 can be moved up and down and moved up and down by forward and reverse rotation (winding and feeding rotation) of the winding drum 3.
[0010]
The sheet 2 has a bag-like core material accommodating portion 20 formed in a plurality of stages at a predetermined interval in the longitudinal (width) direction in the same manner as a conventional one, and each core material accommodating portion 20 has a rod-like shape having a certain rigidity. The core material 21 is inserted to maintain straightness so as to prevent the sheet 2 from bending in the width direction, and a grounding portion 22 having a hanging structure 9 is provided at the lower end of the sheet 2.
As shown in FIG. 5, the hanging structure 9 inserts and holds a core material 90 that also serves as a rod-like weight at the lower end of the seat 2 in the core material storage portion 25, and the outer periphery of the core material storage portion 25 is made of sponge or the like. In the state covered with the cushion member 91, the elastic ground cover 92 is bent and covered so as to form a tube-like cross section, thereby maintaining the straightness of the lower end of the seat and providing the elastic property, thereby suitably grounding. And the feeding operation of the sheet 2 is favorably promoted by the weight of the core material 90.
[0011]
Further, the left and right side frames 11 are formed in a U-shaped cross section by combining two guide cases 15 made of sheet metal, and can be moved up and down by inserting and accommodating both ends of the seat 2 therein. I try to guide you.
An opening sensor (starting sensor) S made of an infrared sensor is installed on the left side of the shutter frame 1a so as to face the center of the front side, and the opening sensor S is located in front of the seat 2 such as a person or a transport vehicle. When the passing body is detected, the drive motor 4 is operated via the control box 5 by the detection signal of the opening sensor S so that the closed seat 2 can be automatically opened.
On the lower side of both side frames 11 and 11, contrary to the above, when the seat 2 is open and there is an obstacle below the seat 2, the lowering of the seat 2 by the drive motor 4 is restricted. Further, a lowering restriction sensor S1 made of an infrared ray or a photoelectric tube for detecting an obstacle is provided.
[0012]
In this embodiment, the drive motor 4 employs a motor with a brake that can rotate in the forward and reverse directions, and the other end of the drive shaft 40 of the drive motor 4 has a detection device (non-detector) composed of an encoder or other sensors. The rotation number (signal) of the drive motor 4 detected by the detection device is read and determined by the control box 5 so that the seat 2 can be operated and stopped as desired. The remote control switch 50 or the operation switch 51 provided in the control box 5 can freely set the opening / closing operation of the seat 2 and the mode setting such as the opening / closing pattern, and can appropriately perform the operation.
[0013]
Next, the above-described sheet winding and unwinding structure will be described. The take-up drum 3 is formed in a hollow polygonal shape (octagonal in the illustrated example) by the configuration described later, and the drive motor 4 attaches an octagonal support member 6 to the drive shaft 40, and the support member 6. Is inserted into the inner part of the right side of the winding drum 3.
Further, the left side of the take-up drum 3 is supported by inserting a support member 6a fixedly attached to a support shaft 17 rotatably supported by a metal portion 16 on the left end plate 13 therein. Yes.
With the above configuration, the take-up drum 3 is supported in the seat case 10 so as to be stably taken up and rotated. In the winding drum 3, the left support member 6a is fastened with the mounting screw 18. However, the winding drum 3 can be satisfactorily fixed to the right support member 6 without being fixed in the axial direction for the reason described later. I try to support it.
[0014]
In the illustrated example, the support members 6 and 6a are formed in substantially the same shape, and both are formed by bending four wide flat support pieces 61 at equal intervals on the outer periphery of the shaft support plate 60. Thus, the support piece 61 is bent into the polygonal shape of the take-up drum 3 and joined to the inner flat surface (bent inner side surface) 3a between the bent tops 3c, 3c. ing.
With this structure, the left side of the take-up drum 3 is first positioned and fixed in the seat case 10 by the support member 6 a, and then the support member 6 assembled together with the drive motor 4 in advance on the end plate 13 is placed on the right side of the take-up drum 3. When the winding drum 3 is inserted, the both sides of the winding drum 3 can be efficiently and accurately supported with a simple assembly structure.
[0015]
Further, the support member 6 is formed so that the width of the support piece 61 is a flat surface that is substantially the same width as the bent inner side surface 3 a, and is equidistant from the number of polygonal bent inner side surfaces 3 a of the winding drum 3. Each supporting piece 61 provided and protruded is regulated and held on the corresponding bent inner side surface 3a of the winding drum 3 by the bent inner side surfaces 3a, 3a on both sides of the bent top portion 3c. Can be satisfactorily joined without requiring a fixing means such as a mounting screw, and the take-up drum 3 can be accurately driven by the support member 6 with a simple structure without backlash or the like. At the same time, since it is possible to make the surface of the winding drum 3 flat so that the heads of the mounting screws do not protrude, it is possible to easily prevent problems such as damage and catching of the sheet 2 wound around the winding drum 3. There are advantages such as being able to.
[0016]
Further, the winding drum 3 formed into a polygonal shape by the configuration described later has a plurality of bent top portions 3c formed in a mountain shape together with the bent outer surface 3b on its peripheral surface as angle-shaped reinforcing ribs against bending and twisting. Since it has sufficient rigidity, the take-up drum 3 can be kept for a long period of time without deforming or damaging the take-up drum 3 due to a load applied when the heavy sheet 2 is taken up and rotated vigorously forward and backward. It can be driven smoothly, the drum diameter can be made as small as possible, and the maximum winding diameter of the seat 2 can be reduced, so that a compact seat case 10 can be formed. There are features such as.
[0017]
Next, the structure of the winding drum 3 and the mounting structure of the seat 2 will be described with reference to FIGS.
The winding drum 3 having an octagonal shape in a side view in the example shown in the figure is composed of drum plates 30 and 30 that are bilaterally symmetrical in a curved shape with a thin plate-like member, and the end portions of both are formed. By being fixed in contact with each other, a polygonal cylindrical body having eight bent top portions 3c and a bent outer surface 3b in a substantially regular octagonal shape in a side view is formed.
This makes it possible to easily process and manufacture the take-up drum 3 that is lightweight but has high rigidity, and to take up the sheet 2 satisfactorily.
[0018]
That is, the drum plate 30 is formed by bending a thin iron plate into a semi-polygon by a bending machine, and mounting screws 31 or rivets 32 along the both sides of the drum plate 30 with mounting holes with nuts 33 that can be inserted. A plurality of rivet holes are provided, and a pair of drum plates 30 and 30 are fastened with mounting screws 31 or rivets 32 in a state where both ends of the drum plates 30 and 30 are overlapped as shown in the drawing, thereby forming a single polygonal winding drum 3. Can be manufactured with simple processing means with high rigidity.
[0019]
Then, the seat 2 can be accurately attached and fixed to the winding drum 3 as shown in the embodiments of FIGS. 7 to 14 and can be easily attached and detached. In addition, maintenance work such as replacement can be easily performed.
First, the seat mounting structure according to the first embodiment shown in FIGS. 7 to 9 will be described. The pair of drum plates 30 and 30 divided into two symmetrical shapes are shown in FIG. A plurality of locking holes 7 having a shape shown in FIG. 5 are formed at predetermined intervals, and the locking holes 7 formed in each drum plate 30 are mutually connected when the drum plates 30 and 30 are fixed in contact with each other. They coincide with each other and penetrate the inside and outside of the winding drum 3.
[0020]
That is, the locking hole 7 in the figure is a circular round hole that can be fitted and inserted with a margin in a collar portion 70a of the mounting seat 73, which will be described later. A concave groove-shaped locking portion 7a that can be positioned and locked by fitting the engaging portion 70 of the mounting seat 73 is formed in the center portion on the lower side.
Accordingly, each mounting seat 73 can be easily fitted into the corresponding large-diameter locking hole 7 even if both have a processing error or the like, and the fitted engaging portion 70 has a concave groove shape. Thus, the seat 2 can be securely fitted and fixed by preventing the upper end portion (base portion) from moving in the left-right direction.
[0021]
On the other hand, as shown in FIG. 8, the attachment fixing means on the base side of the sheet 2 includes an attachment bag portion 23 formed into a bag shape by folding the upper end of the sheet 2 and bonding it to the sheet body, A mounting bar 34 in which a long plate member is bent in a letter-like shape when viewed from the side and a mounting hole 71 corresponding to each of the locking holes 7 is formed, and a mounting bag portion of the seat 2 in the mounting hole 71 23, a rivet 72 that can be inserted while breaking through 23, a cylindrical engaging portion 70 that can be inserted into the rivet 72, and a mounting seat 73 having a flange portion 70a. As shown in FIG. When the rivet 72 is inserted into both of the mounting seats 73 and the ends thereof are crimped, the seat 2 is fixed to the mounting bar 34 and a plurality of engaging portions 70 are integrally formed on the mounting bar 34. It can be configured.
[0022]
At this time, as shown in FIG. 9, the mounting seat 73 has the engaging portion 70 formed slightly longer than the thickness of the drum plate 30 in heavy contact between the mounting bar 34 and the flange portion 70a. Since the insertion side of the portion 70 a is formed to be a conical guide surface 75, when the mounting seat 73 is inserted into the locking hole 7, the tapered guide surface 75 is quickly positioned in the locking hole 7. After that, the mounting seat 73 can be easily inserted into the take-up drum 3 simply by pressing from the outside, and the engaging portion 70 has sufficient rigidity in the locking portion 7a. Thus, the engagement with the locking hole 7 can be accurately performed with durability.
[0023]
Further, since the locking portion 7a of the winding drum 3 has a thickness in which the two drum plates 30 are in contact with each other, the strength of the drum plates 30 and 30 in contact with each other without using a special reinforcing structure is obtained. Due to the wide receiving surface, the engaging portion 70 can be positioned and locked stably with durability, and the strength and durability of the locking hole 7 can be increased without increasing the thickness of the drum plate 30 by this amount. Since it can improve, it has the advantage that the weight reduction of the winding drum 3 can be achieved.
[0024]
Further, the mounting bar 34 inserted into the mounting bag portion 23 is pulled by the sheet 2 through the bent portion of the mounting bar 34 by matching the bent portion of the mounting bar 34 with the bent top portion 3c of the winding drum 3. There is an advantage that the load in the direction can be received well.
When the sheet 2 is removed from the take-up drum 3, if the attachment bag portion 23 side is pressed and moved in the take-up direction side, the engaging portion 70 can be easily removed from the locking portion 7a. When the attachment bag portion 23 side is lifted, the attachment seat 73 can be quickly pulled out from the locking hole 7, so that the seat 2 can be easily removed.
Accordingly, it is possible to easily and quickly attach and detach the seat 2, and the assembly and maintenance work of the seat 2 can be performed efficiently and easily.
[0025]
The sheet 2 attached to the winding drum 3 as described above has a buffer auxiliary curtain body 2a made of a sponge plate or the like having flexibility and appropriate elasticity in the vicinity of the lower side in the winding direction. Can be wound around the take-up drum 3, and the auxiliary curtain body 2a prevents the direct contact between the peripheral surface of the take-up drum 3 and the sheet 2 at the time of take-up and rotation, and a heavy core material. When the portion 21 comes into contact with the take-up drum 3 vigorously, it can be buffered to protect both of them, and noise can be prevented from being generated by the contact, so that the take-up rotation can be performed quietly. I am doing so.
[0026]
That is, as shown in FIGS. 4 to 6, the auxiliary curtain body 2 a is formed with a thin sponge plate having the same width as the sheet 2 and capable of being wound around the winding drum 3 by one or more rounds. Adhere the starting end side to the flat bent outer surface 3b formed on the surface side of the bent inner surface 3a with an adhesive 2b such as a double-sided adhesive tape, or directly apply to the inner surface of the sheet 2. The terminal end side is provided so as to be free without being fixed to the winding drum 3.
With this configuration, when the winding drum 3 winds up the sheet 2 vigorously by the winding rotation in the direction of the arrow in FIG. 5, the core material 21 that is sequentially wound up is stored in the core material storage portion 20, and the auxiliary curtain body 2 a. The sheet 2 is brought into contact with the winding drum 3 side, so that the sheet 2 can be smoothly taken up and rotated without causing large repulsion or noise due to the contact.
[0027]
Further, as described above, the lower side of the auxiliary curtain body 2a is a free end, so that it follows the sheet 2 by the winding rotation of the winding drum 3 and winds along the peripheral surface of the winding drum 3 appropriately. In addition, as shown in FIG. 6, the free end side of the auxiliary curtain body 2a is fed out following the sheet 2 on the final side of the take-up rotation of the take-up drum 3, so that the take-up operation of the sheet 2 is smoothly performed. The auxiliary curtain body 2a can be mounted on the take-up drum 3 with a simple and inexpensive structure. Even if the auxiliary curtain body 2a is elongated for a long time, the free end side Therefore, the auxiliary curtain body 2a has an advantage that it can be suitably used for a long period of time without causing poor bonding due to bending at the bent outer surface 3b during winding.
[0028]
Next, with reference to FIGS. 4-6, the structure of the sheet | seat 2 and the aspect of the winding | feeding out are demonstrated.
When the take-up drum 3 winds up the sheet 2, the core materials 21 that are laterally arranged on the sheet 2 with a rough interval are positioned substantially evenly on the flat bent outer surface 3 b formed in a polygonal shape, and the same bend By winding the sheet 2 so that the plurality of cores 21 positioned on the outer side surface 3b are in contact with each other, the winding diameter of the sheet 2 is made as small as possible, and the core member accommodating portions 20 that are adjacent to each other vertically are provided. By avoiding intense contact of the core material 21 portion, the core material accommodating portion 20 can be prevented from being damaged such as cracks and the occurrence of noise.
[0029]
That is, since the take-up drum 3 has a diameter of about 165 mm in the illustrated sheet 2, the interval between the cores 21 laid horizontally on the sheet 2 is, for example, about 547 mm, 567 mm, 582 from above. By providing each core material accommodating portion 20 while maintaining different intervals such as millimeters, 592 mm, 582 mm, etc., each core material 21 is bent outwardly adjacent to the winding drum 3 as shown in FIG. The core material 21 is positioned on the bent outer surface 3b without being positioned on the bent top portion 3c formed between 3b, and a plurality of core material 21 portions wound inwardly (up and down) on the bent outer surface 3b are positioned. I try to prevent overlapping contact.
[0030]
Further, the sheet 2 wound around the polygonal winding drum 3 is strongly joined to the sheet 2 portion overlapping the inside and outside at the bent top portion 3c portion, but is loosely overlapped by the flat surface at the bent outer surface 3b portion. While the entire sheet 2 is not strongly tightened on the winding drum 3, a reliable winding operation can be performed by the bent top 3c, and the sheet 2 can be wound to a small diameter without impairing the durability of the sheet 2. Is.
Further, at the time of feeding rotation, the sheet 2 is in a separated state with the sheet 2 portion that overlaps the inside and outside in a wide area of each bent outer surface 3b being loosely overlapped and separated. There is an advantage that can be performed.
[0031]
Therefore, the sheet shutter 1 having the sheet winding and unwinding device as described above can perform the winding and unwinding operation of the sheet 2 satisfactorily by the winding drum 3 formed in a polygonal shape. The opening and closing of the frontage (entrance / exit) by the operation can be made excellent, and the speed of winding and unwinding of the sheet 2 can be increased.
In addition, the apparatus is compact and can be easily installed in a building or the like, and can be manufactured at low cost.
If the short engaging portion 70 is punched out from both the mounting bar 34 and the mounting seat 73 as described above, it is possible to easily form a long cylindrical engaging portion 70 having both rigidity. There is.
[0032]
And in the winding and unwinding structure in which the sheet 2 is wound around the winding drum 3 rotated forward and backward by the drive motor 4, a plurality of locking holes 7 are formed in the circumferential surface width direction of the winding drum 3, and By providing a plurality of engaging portions 70 that can be respectively locked to the locking holes 7 at the base portion on the winding side of the sheet 2, the mounting of the sheet 2 to the winding drum 3 is performed. By simply inserting and engaging the engaging portions 70 provided at the base portion of the sheet 2 into the plurality of locking holes 7 formed in the base 2, the positioning can be accurately supported. Can be attached and detached easily and efficiently.
[0033]
In mounting the seat 2 as described above, the flange portion 70a of the mounting seat 73 is locked inside the locking hole 7 to accurately prevent the mounting bar 34 from being lifted or detached, but this is limited to this prevention means. Without,When the sheet 2 is fully unwound, the sheet 2 is preliminarily wound around the winding drum 3 so that the preliminarily wound sheet 2 covers and presses the mounting bar 34. Is also good.
Further, the winding drum 3 is not limited to the iron plate bending means as described above, and may be integrally formed with an octagonal shape, a polygonal shape before and after that, or a cylindrical cylindrical body or the like by a plastic material. .
[0034]
Next, a second embodiment of the present invention shown in FIGS. 10 to 12 will be described. (In addition, description is abbreviate | omitted about the structure similar to the said 1st Embodiment.)
The locking hole 7 in the figure is a wide elongated hole that is long in the circumferential direction of the take-up drum 3, and an engaging portion, which will be described later, is provided at the center of the upper and lower sides in the rotational direction in the long hole. 70 is inserted to form a concave groove-shaped locking portion 7 a that can be positioned and locked.
Accordingly, each engaging portion 70 can be easily fitted into the corresponding wide locking hole 7 even if both have a processing error or the like, and the fitted engaging portion 70 has a concave groove shape. The seat 2 can be fitted and locked to the locking portion 7a to prevent the upper end portion (base portion) from moving in the left-right direction and can be attached and fixed accurately.
The shape of the locking hole 7 is not limited to the illustrated example, but may be a rhombus or the like as shown by the dotted line in FIG. There is an advantage that the engaging portion 70 inserted into the guide portion can be guided by a slope converging with a rhombus and can be easily positioned and locked in the locking portion 7a.
[0035]
Further, as shown in the figure, the mounting and fixing means on the base side of the seat 2 has the mounting bar 34 and the mounting seat 73 facing each other. A plurality of engaging portions 70 can be integrally formed on the mounting bar 34 while being fixed to the mounting bar 34. At this time, the mounting hole 71 of the mounting bar 34 has substantially the same shape as the engaging portion 70. In order to form a cylindrical engagement portion 70, an engagement portion 70 that is slightly longer than the thickness of the drum plate 30 that is in heavy contact between the mounting bar 34 and the flange portion 70 a is formed between them. In addition to simplifying the series, the engagement portion 70 has sufficient rigidity so that the engagement with the locking hole 7 can be performed easily and quickly while performing the engagement with the locking hole 7 with durability and accuracy. Enable assembly, maintenance work, etc. of the seat 2 So that it is possible to perform the rate may readily.
[0036]
Next, a third embodiment of the present invention will be described with reference to FIG. Similar to the second embodiment, the seat 2 has a mounting bar 34, a rivet (mounting shaft) 72, and a cylindrical shape that can be inserted into the rivet 72. The engagement portion 70 and the attachment seat 73 having the flange portion 70a are formed. The engagement portion 70 is not formed from the attachment bar 34 side in the illustrated example, and the length of the engagement portion 70 of the attachment seat 73 is wound up. The configuration is such that the thickness of the heavy contact portion of the drum 3 is substantially the same.
[0037]
Further, in the fourth embodiment shown in FIG. 13 (B), a cylindrical engaging portion 70 formed independently is interposed between the flange portion 70a that becomes a flat mounting seat 73 and the mounting bar 34 alone. The mounting structure is configured by inserting mounting screws (mounting shafts) 72 through these three members and fastening them with nuts.
Further, in the fifth embodiment shown in FIG. 14A, a mounting hole 71 in which a thread portion is formed is provided in the engaging portion 70 launched from the mounting seat 73 as in the second embodiment, and the thread portion is long. An attachment screw (attachment shaft) 72 is screwed in, and the seat 2 is fixed by the attachment screw 72 and the engagement portion 70 is engaged with the engagement hole 7.
[0038]
In addition, the sixth embodiment shown in FIG. 14B shows an example in which the hook-like engagement portion 70 is formed at a position different from the attachment shaft 72 portion of the seat 2, and the example shown in the drawing is an attachment. The seat 2 is fastened by an attachment screw (attachment shaft) 72 between the bar 34 and a plurality of flat plate portions 70 b having hook-like engagement portions 70.
The engaging portion 70 is configured to be detachably locked in a locking hole 7 formed in the winding drum 3.
[0039]
In the above embodiment, the locking hole 7 is provided on the drum side, and the spool-shaped or washer-shaped engaging portion 70 is provided on the sheet winding end side. However, the engaging portion 70 may be a simple hook shape. The locking side does not necessarily have to be a hole. For example, a recess provided on the drum peripheral surface along the axial direction.In shapeIt may be a locking part.
[0040]
【The invention's effect】
The present invention has the following effects by being configured as described above.
By engaging and disengaging the engaging and disengaging portions provided on the circumferential surface side and the sheet end side of the winding drum that is rotated forward and backward by the drive motor, the sheet is detachably attached and fixed to the winding drum. The sheet can be attached to and detached from the take-up drum easily and quickly, and the assembly and maintenance work of the sheet can be efficiently performed.
[0041]
The winding drum is formed by overlapping the ends of a plurality of curved drum plates, and the engaging portion is durable with a thick receiving surface by forming a locking hole in the overlapping portion of the drum plate. It can be stably locked with a simple structure while having the property.
Further, by integrally forming the engaging portion on the mounting bar that supports the end portion on the winding side of the sheet, the seat can be attached and detached efficiently and can be attached and fixed accurately.
[0042]
Further, by providing a cylindrical engaging portion that engages with the locking hole between the mounting bar and the mounting seat, the engaging portion can be easily engaged with the locking hole, It is possible to prevent the sheet from coming off.
[Brief description of the drawings]
FIG. 1 is a front view of a sheet shutter having a sheet winding and unwinding structure according to the present invention, partially broken away.
FIG. 2 is a side view showing the sheet shutter of FIG.
FIG. 3 is a front sectional view showing a take-up and feeding structure in a seat case.
4 is an exploded perspective view of FIG. 3. FIG.
FIG. 5 is a cross-sectional view showing a configuration of a winding drum.
6 is a cross-sectional view showing the feeding operation of FIG. 5;
FIG. 7 is an exploded perspective view of essential parts showing a first embodiment of a seat mounting structure.
8A is a side cross-sectional view of the main part of FIG. (B) is a top view which shows the shape of a locking hole.
9 is a perspective view of the mounting seat of FIG. 8. FIG.
FIG. 10 is an exploded perspective view of essential parts showing a second embodiment of a seat mounting structure.
11A is a side cross-sectional view of the main part of FIG. (B) is a top view which shows the shape of a locking hole.
12 is a perspective view of the mounting seat of FIG. 11. FIG.
FIG. 13A is a side sectional view of a mounting structure according to a third embodiment. (B) is a sectional side view of the mounting structure according to the fourth embodiment.
14A is a side sectional view of a mounting structure according to a fifth embodiment. FIG. (B) is a sectional side view of the mounting structure according to the sixth embodiment.
[Explanation of symbols]
1 Sheet shutter
1a Shutter frame (frame)
2 Sheet (Shutter)
3 Winding drum
4 Drive motor
7 Locking hole
7a Locking part
30 drum plate
34 Mounting bar
70 engaging part
70a buttock
72 Mounting shaft (rivet, mounting screw)
73 Mounting seat

Claims (4)

In a winding and feeding structure in which one end of a sheet (2) is fastened and wound around a winding drum (3) rotated forward and backward by a drive motor (4), the circumferential surface width direction of the winding drum (3) A plurality of locking holes (7) are formed in the drum plate (30) so as to penetrate inside and outside of the drum plate (30), and the winding side of the sheet (2) is made to correspond to the locking holes (7), respectively. A plurality of engaging portions (70) that can be locked by being inserted from the outside of the drum (3) are provided as engaging / disengaging portions, and the engaging portions (70) are engaged / disengaged from the engaging holes (7). Thus, the sheet take-up structure for removably attaching the sheet (2) to the take-up drum (3). The winding drum (3) is formed by bringing both ends of a curved drum plate (30) into curved contact with each other, and a locking hole (7) is formed in the overlapping contact portion of the drum plate (30). The sheet take-up and feeding device according to claim 1 . The sheet take-up and feeding device according to claim 1 or 2 , wherein the engaging portion (70) is formed integrally with a mounting bar (34) that supports a base portion on the take-up side of the sheet (2). A mounting bar (34) is provided along the width direction at the base of the seat (2), the mounting shaft (72) is inserted through the mounting bar (34), and a cylindrical engagement portion ( 70) and an engaging portion (70) that engages with the locking hole (7) by inserting and fastening the mounting seat (73) having the flange portion (70a). Item 1. A sheet take-up device according to claim 1, 2 or 3.

Images