JP5798263B1 - Roll screen and guide tape - Google Patents

Abstract

To provide a roll screen and a guide tape having a winding prevention mechanism that does not interfere with opening and closing operations with a simple configuration. A roll screen according to the present invention is provided with a winding shaft that is rotatably provided, a screen that is attached to the winding shaft, and that is drawn out and wound by rotation of the winding shaft, and the screen. And a guide part. The guide portion is provided so as to be convex on one side of the screen, and is provided with a convex guide provided so as to extend along the advancing and retreating direction of the screen, and a concave portion at a position overlapping the convex guide on the other side of the screen. And a concave guide provided to extend along the advancing and retreating direction. [Selection] Figure 1

Description

  The present invention relates to a roll screen and a guide tape, and more particularly to a roll screen and a guide tape that can prevent the screen from slipping.

  The roll screen is used for blinding a window, sunshade, space partitioning, etc. by pulling out the screen wound around the winding shaft. Moreover, a window and space can be opened widely by winding a screen around a winding shaft.

  In such a roll screen, the take-up shaft is rotated by a chain to move the screen up and down, pulled by hand when pulling it out, and taken up by rotating the take-up shaft by the bias of a spring. A winding mechanism is used.

  Here, if the balance when winding the screen is poor, winding deviation occurs. Patent Document 1 discloses a configuration in which engagement holes are provided in both edge portions of a screen and meshed with a sprocket to prevent winding deviation. Patent Document 2 discloses a configuration in which a ring serving as a guide mechanism is provided at both ends of a roll pipe. Furthermore, Patent Document 3 discloses a configuration in which a slip prevention plate is provided on both ends of the take-up shaft and the screen is guided by the slip prevention plate to prevent slippage when winding.

JP-A-8-177351 JP 2011-012430 A JP 2006-299801 A

  However, there is a problem that the mechanism is complicated in the configuration in which the sprocket is engaged with the engagement hole or the configuration in which the ring serving as the guide mechanism is provided. Further, in the configuration in which the slip prevention plate is provided, since the edge of the screen contacts the slip prevention plate, there arises a problem that a smooth opening / closing operation is hindered due to breakage of the screen edge or contact resistance.

  An object of the present invention is to provide a roll screen and a guide tape having a winding slip prevention mechanism that does not hinder the opening and closing operation with a simple configuration.

  In order to solve the above problems, a roll screen of the present invention includes a winding shaft that is rotatably provided, a screen that is attached to the winding shaft, and that is drawn and wound by rotation of the winding shaft. And a provided guide part. The guide portion is provided so as to be convex on one side of the screen, and is convex at a position overlapping with the convex guide on the other side of the screen, and a convex guide provided so as to extend in the forward and backward direction of the screen. And a concave guide provided to extend in the forward / backward direction.

  According to such a configuration, when the screen is wound on the winding shaft, the convex guide and the concave guide of the guide portion overlap each other as the screen is wound. That is, the convex guide (or concave guide) wound up earlier in the winding of the screen and the concave guide (or convex guide) wound up in the future overlap each other to become a guide, and follow the winding shaft of the screen. The position in the direction is restricted. This prevents the screen from slipping.

  In the roll screen of the present invention, the guide portions may be provided at both ends of the screen. Since the guide portions are provided at both ends of the screen, stable guide can be performed.

  In the roll screen of the present invention, the guide portion may be provided over the entire length of the screen in the forward / backward direction. Thereby, it is possible to guide everything from the start of winding of the screen to winding.

  In the roll screen of the present invention, the guide portion may be provided at a part of the entire length of the screen in the forward / backward direction. Even if only a part of the screen winding is guided, the winding deviation is corrected at the guide part.

  In the roll screen of the present invention, the guide portion may be provided integrally with the screen. Thereby, it is not necessary to attach the guide part separately.

  The guide tape of the present invention is a guide tape that is attached to a screen of a roll screen, and is provided so as to be convex on one surface side, and is provided so as to extend in one direction, and is convex on the other surface side. A concave guide provided so as to be concave at a position overlapping the guide and extending in one direction. By attaching this guide tape along the screen's advancing / retreating direction, when the screen is wound, the convex guide and the concave guide of the guide tape overlap with the winding of the screen in the direction along the winding shaft of the screen. The position can be regulated.

(A)-(d) is a schematic diagram which illustrates the roll screen which concerns on 1st Embodiment. (A) And (b) is a schematic diagram which illustrates the opening-and-closing state of a roll screen. (A)-(e) is a schematic diagram which shows the other example of a guide part. It is a schematic diagram which illustrates the roll screen which concerns on 2nd Embodiment. (A) And (b) is a schematic diagram which shows the example of application to a cold storage vehicle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same members are denoted by the same reference numerals, and the description of the members once described is omitted as appropriate.

(First embodiment)
1A to 1D are schematic views illustrating a roll screen according to the first embodiment.
FIG. 1A shows the entire roll screen 1, and FIG. 1B shows an enlarged perspective view of a portion A of FIG. 1A. 1C illustrates a cross-sectional view taken along line X1-X1 in FIG. 1A, and FIG. 1D illustrates a cross-sectional view taken along line X2-X2 in FIG. In this embodiment, the forward / backward direction (opening / closing direction) of the screen 20 is referred to as the X direction, the thickness direction of the screen 20 is referred to as the Z direction, and the width direction of the screen 20 is referred to as the Y direction. A direction along the rotation axis AX of the winding shaft 10 is referred to as an axial direction.

  As illustrated in FIG. 1A, the roll screen 1 according to the present embodiment includes a winding shaft 10 that is rotatably provided around a rotation axis AX, and a screen 20 that is attached to the winding shaft 10. And a guide portion 30 provided on the screen 20.

  The winding shaft 10 is rotatably supported by the bracket 40. The bracket 40 includes a frame 41 that extends in the Y direction, and side plates 42 that are provided at both ends of the frame 41. A core member (not shown) is fixed to the side plate 42 of the bracket 40, and a tubular take-up shaft 10 is rotatably attached around the core member. The winding shaft 10 is not limited to a tube shape, and may be a solid rod shape.

  The screen 20 is a sheet made of vinyl or cloth, and a soft material is used so as to be wound around the winding shaft 10 in a roll shape. One end of the screen 20 is fixed to the winding shaft 10. Thereby, by rotating the winding shaft 10, the screen 20 is wound around the winding shaft 10 with one end as a starting point. On the other hand, a weight bar 25 extending in the Y direction is attached to the other end of the screen 20. A puller 27 such as a belt is provided on the other end of the screen 20 as necessary.

  Such a screen 20 is pulled out and taken up as the take-up shaft 10 rotates. For example, the take-up shaft 10 includes a spring mechanism (not shown) and biases it in the direction opposite to the rotation direction when the screen 20 is pulled out. The screen 20 is always biased in the direction of being wound around the winding shaft 10 by the biasing of the spring mechanism.

  The winding shaft 10 has a built-in stop mechanism (not shown). As a result, the screen 20 can be fixed in a state of being pulled out to an arbitrary position. In order to release the fixing of the winding shaft 10 by the stop mechanism, the screen 20 is slightly pulled and released. When the fixing of the winding shaft 10 is released, the winding shaft 10 is rotated by the urging force of the spring mechanism, and the screen 20 can be automatically wound up to the end point position.

  The guide part 30 is provided in the left and right edge parts of the screen 20, for example. In this embodiment, the guide part 30 is attached along the edge of the screen 20 as a guide tape GT. In the roll screen 1, the guide portion 30 is provided over the entire length of the screen 20 in the forward / backward direction.

  As shown in FIGS. 1B and 1C, the guide unit 30 includes a convex guide 31 and a concave guide 32. The guide portion 30 is provided with an attachment piece 33. The edge 20a of the screen 20 is overlaid on the attachment piece 33, and both are attached by sewing, bonding, welding or the like. Thereby, the guide part 30 is firmly fixed to the edge of the screen 20.

  The convex guide 31 of the guide portion 30 is convex on one side of the screen 20 and is provided so as to extend in the forward / backward direction (X direction) of the screen 20. On the other hand, the concave guide 32 is provided so as to be concave at a position overlapping the convex guide 31 on the other surface side of the screen 20. The concave guide 32 is provided so as to extend in the X direction in the same manner as the convex guide 31.

  The guide part 30 is formed of, for example, a rubber-based flexible material. The guide unit 30 is wound around the winding shaft 10 together with the screen 20. The sectional shape of the convex guide 31 (hereinafter also referred to as a convex shape) and the sectional shape of the concave guide 32 (hereinafter also referred to as a concave shape) are substantially triangular. The size of the substantially triangular shape in the convex shape is equivalent to the size of the substantially triangular shape in the concave shape. The center of the convex shape matches the center of the concave shape. That is, when viewed in the Z direction, the convex guide 31 and the concave guide 32 are arranged at positions that overlap each other.

  As an example, the width of the guide tape GT is about 20 mm to 30 mm, and the width of the mounting piece 33 is about 50% to 60% of the width of the guide tape GT. The thickness of the attachment piece 33 is thinner than the partial thickness of the convex guide 31 and the concave guide 32. When the screen 20 is attached to the attachment piece 33, the surface of the screen 20 and the surface on which the convex guide 31 is provided. It is provided so that it may become substantially the same plane. The height of the convex guide 31 is about 0.9 mm to 1.2 mm, and the depth of the concave guide 32 is equal to or higher than the height of the convex guide 31 and is about 0.9 mm to 1.4 mm. Further, the apex angle of the convex and concave substantially triangular shapes is about 120 to 150 degrees.

  In the roll screen 1 according to the present embodiment, since the guide portions 30 as described above are provided at both edge portions of the screen 20, when the screen 20 is wound around the winding shaft 10, The convex guide 31 and the concave guide 32 of the guide part 30 overlap. That is, in the portion where the screen 20 is wound around the winding shaft 10 and overlaps, the convex guide 31 (or the concave guide 32) of the guide portion 30 wound up first and the concave guide 32 (or the convex type) wound up from now on. The guide 31) overlaps with each other to become a guide, and the screen 20 is prevented from being unwound.

  FIG. 1D shows the state of the overlapping guide portions 30. By being wound around the take-up shaft 10, the convex guide 31 of the guide part 30 to be taken up next is overlapped along the concave guide 32 of the guide part 30 taken up earlier. It will be. As a result, the position of the screen 20 in the direction along the rotation axis AX is restricted, and the screen 20 is prevented from being unwound.

  Since the guide part 30 exhibits a guide function by overlapping the convex shape of the convex guide 31 and the concave guide 32 with the concave shape, it is possible to prevent winding slip more effectively by combining the convex shape and the concave shape. can do.

2A and 2B are schematic views illustrating the open / closed state of the roll screen.
2A shows a state where the screen 20 is pulled out (closed state), and FIG. 2B shows a state where the screen 20 is wound up (open state).

  In the roll screen 1 according to the present embodiment, the screen 20 can be opened by urging by a spring. That is, in a state where the screen 20 shown in FIG. 2A is pulled out, the stop mechanism (not shown) is released by slightly pulling and releasing the screen 20 and is biased by a spring mechanism (not shown). The screen 20 is automatically wound up to the end point position (see FIG. 2B).

  At this time, even if winding is likely to occur on the screen 20, it is corrected by the overlapping of the convex guide 31 and the concave guide 32 of the guide portion 30, and the screen 20 can be taken up without causing winding deviation. Is called.

  The guide portion 30 of the roll screen 1 according to the present embodiment is particularly effective in the case where the screen 20 is automatically wound by a spring mechanism. In the structure in which the screen 20 is automatically wound by the spring mechanism, the winding is automatically continued to the final position when the winding of the screen 20 is started. If the guide part 30 is not provided, the winding deviation generated at the time of winding is accumulated to cause a large winding deviation. Since the guide portion 30 is provided as in the present embodiment, even if the screen 20 is automatically wound up to the final position, it is not necessary to cause winding deviation.

  Further, since the guide portion 30 is provided over the entire length of the screen 20 in the advancing / retreating direction, the screen 20 can be guided from the start of winding of the screen 20 until reaching the final position.

  In addition, since the convex guide 31 and the concave guide 32 extend along the advancing / retreating direction of the screen 20 and guide each other while being overlapped, a large load is not applied during winding. Therefore, the screen 20 can be smoothly opened and closed even with the guide mechanism.

  Furthermore, since a member such as a guide plate does not contact the screen 20 at the time of guiding, the screen 20 is not damaged due to the guide. Moreover, since it is only necessary to attach the guide tape GT which is the guide part 30 to the existing screen 20, it is possible to suppress winding deviation without providing a complicated guide mechanism.

(Other examples of guide part)
Next, another example of the guide unit will be described.
3A to 3E are schematic views illustrating other examples of the guide portion.
In the guide part 30 shown in FIG. 3A, the sectional view shape of the convex guide 31 and the sectional view shape of the concave guide 32 are each arcuate. Moreover, in the guide part 30 shown in FIG.3 (b), the cross-sectional view shape of the convex guide 31 and the cross-sectional view shape of the concave guide 32 are each rectangular. In any of the examples, when the screen 20 is wound, the convex guide 31 and the concave guide 32 of the guide portion 30 overlap each other and serve as a guide for preventing the screen 20 from being unwound.

  In the guide portion 30 shown in FIG. 3C, a plurality of convex guides 31 and a plurality of concave guides 32 are provided. In this example, a plurality of convex guides 31 and a plurality of concave guides 32 form a wave shape. In such a guide portion 30, each of the plurality of convex guides 31 and each of the plurality of concave guides 32 overlap each other when winding the screen 20, and serve as a guide for preventing the screen 20 from being unwound. In the guide portion 30 including the plurality of convex guides 31 and the plurality of concave guides 32, even if the height of one convex guide 31 is low and the depth of one concave guide 32 is shallow, the guide function is sufficiently exhibited. can do.

  In the guide portion 30 shown in FIG. 3D, the guide portion 30 is provided integrally with the screen 20. That is, the guide portion 30 is formed by performing press working using, for example, a mold on the edge portion 20 a of the screen 20. Thereby, it is not necessary to attach the guide part 30 to the screen 20 separately. Further, the guide portion 30 is not detached from the screen 20.

  The guide portion 30 shown in FIG. 3E has a configuration in which an attachment piece 33 is attached to a thin portion provided on the edge portion 20a of the screen 20. Thereby, the thickness of the screen 20 where the guide portion 30 is not attached and the entire thickness of the portion where the guide portion 30 is attached can be made equal, and the difference in the diameter of the wound screen 20 Can be suppressed.

(Second Embodiment)
Next, a roll screen according to the second embodiment will be described.
FIG. 4 is a schematic view illustrating a roll screen according to the second embodiment.
As shown in FIG. 4, in the roll screen 1 </ b> B according to the present embodiment, the guide portion 30 provided on the edge portion 20 a of the screen 20 is provided on a part of the entire length of the screen 20 in the forward / backward direction.

  In the example shown in FIG. 4, the guide portion 30 is provided about half of the upper side of the screen 20 (on the take-up shaft 10 side when the screen 20 is pulled out). When the guide portions 30 are provided on both the left and right edge portions of the screen 20, it is desirable to provide them at the same position and the same length in the vertical direction.

  Even if the guide portion 30 is provided on a part of the entire length of the screen 20, the convex guide 31 and the concave guide 32 overlap each other when the guide portion 30 is taken up along with the winding of the screen 20, so that the screen 20 is taken up. Can be a guide. Further, in winding the screen 20, even when a portion where the guide portion 30 is not provided is wound, since the guide portion 30 guides the winding, the occurrence of winding deviation is sufficiently suppressed. Is done.

  In addition, when providing the guide part 30 in a part of full length of the screen 20, providing in the upper side of the screen 20 is desirable. Thereby, it is possible to guide at the start of winding when the screen 20 is wound. If the winding deviation is suppressed at the beginning of winding of the screen 20, the winding is continued in that state, and it is possible to cleanly wind up to the final position.

  On the other hand, when the guide portion 30 is provided at a part of the lower side of the screen 20, the convex guide 31 and the concave guide 32 can be overlapped even if the winding deviation occurs halfway during winding. Can be corrected by guiding from the middle.

(Application example)
Next, an application example of the roll screen according to the present embodiment will be described.
FIGS. 5A and 5B are schematic views showing an example of application to a cold car.
FIG. 5 (a) shows an overall image of the cold car, and FIG. 5 (b) shows a state in which the rear door is open.
As shown in FIG. 5A, the cooler vehicle 500 includes a cooler box 502 in the cargo bed portion behind the driver's seat 501. The inside of the cool box 502 is maintained at a temperature for freezing and refrigeration by the cooling device 503.

  As shown in FIG. 5B, a rear door 510 is provided at the rear of the cool box 502, and the rear door 510 is opened to load / unload the luggage in the cool box 502. The cool box 502 may be provided with a side door 515 (see FIG. 5A).

  The roll screens 1 and 1B according to the present embodiment are provided at the opening portions of the rear door 510 and the side door 515 of the cool box 502. In the example shown in FIG. 5B, roll screens 1 and 1 </ b> B are provided in the opening portion of the rear door 510.

  If the roll screens 1 and 1B are provided in the opening portion of the rear door 510, a partition between the cool box 502 and the outside can be secured. Thereby, even if the rear door 510 is opened, it is possible to prevent outside air from immediately entering the cool box 502.

  When the luggage in the cold storage 502 is taken in and out, the screen 20 is rolled up and opened. In the case of the roll screens 1 and 1B having a spring mechanism, the roll is automatically wound by pulling the screen 20 slightly while holding the pulling portion 27 and releasing it. At this time, since the guide portion 30 is provided, the screen 20 can be smoothly wound up without being wound.

  Further, since the guide portion 30 guides the screen 20 when the screen 20 is pulled out, the screen 20 is drawn straight even when a force is applied to the pull portion 27 slightly obliquely.

  When the roll screens 1 and 1B are used in the cold car 500, the thick screen 20 is used in order to ensure a cold function. Moreover, since the screen 20 is wound up by a strong urging force, the winding speed is also high. For this reason, it is easy to generate | occur | produce winding | winding deviation especially in the case of winding. By applying the roll screens 1 and 1B of the present embodiment to the cold car 500, the screen 20 can be quickly opened and closed without worrying about the winding displacement of the screen 20, and work efficiency can be improved. it can.

  As described above, according to the roll screens 1 and 1B and the guide tape GT according to the embodiment, it is possible to prevent the screen 20 from being unrolled with a simple configuration without hindering the opening / closing operation.

  Although the present embodiment and other examples have been described above, the present invention is not limited to these examples. For example, the guide portion 30 may be provided at three or more locations in addition to the case where the guide portion 30 is provided at both edge portions of the screen 20. For example, the structure which provided the one guide part 30 in the center of the screen 20 may be sufficient. The screen 20 can be wound up by urging by a spring mechanism, or can be applied to a structure in which the screen 20 is opened and closed by rotating the winding shaft 10 with a chain. Further, those in which those skilled in the art appropriately added, deleted, and changed the design of each of the above-described embodiments or other examples, or combinations of the features of each embodiment as appropriate are also included in the present invention. As long as the gist is provided, it is included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1,1B ... Roll screen 10 ... Winding shaft 20 ... Screen 20a ... Edge 25 ... Weight bar 27 ... Puller part 30 ... Guide part 31 ... Convex guide 32 ... Concave guide 33 ... Mounting piece 40 ... Bracket 41 ... Frame 42 ... Side plate 500 ... Cold truck 501 ... Driver's seat 502 ... Cold box 503 ... Cooling device 510 ... Rear door 515 ... Side door AX ... Rotating shaft GT ... Guide tape

Claims (6)

A winding shaft that is rotatably provided and biased in the winding direction by a spring mechanism ;
A screen attached to the take-up shaft, pulled out and taken up by rotation of the take-up shaft, and taken up by the spring mechanism by urging of the spring mechanism ;
Guide portions provided on both left and right edge portions of the screen;
With
The guide portion is
A convex guide provided so as to be convex on one side of the screen and extending in the advancing and retreating direction of the screen;
A concave guide provided to be concave at a position overlapping the convex guide on the other surface side of the screen, and provided to extend in the forward and backward direction;
And a mounting piece provided thinner than the thickness of the convex guide and the concave guide,
When the edge of the screen is overlapped and attached to the attachment piece, the surface of the screen and the surface between the convex guide and the screen of the guide portion are substantially flush,
When the screen is wound by the urging force of the spring mechanism, the convex guide of the guide part to be wound next is called in along the concave guide of the guide part wound earlier. Roll screens that overlap each other . 2. The roll screen according to claim 1, wherein a thickness of a portion of the screen where the guide portion is not attached is equal to a total thickness of the screen and the attachment piece of the portion where the guide portion is attached.   The roll screen according to claim 1, wherein the guide portion is provided over the entire length of the screen in the advance / retreat direction.   The roll screen according to claim 1, wherein the guide portion is provided at a part of a total length of the screen in the advance / retreat direction.   The roll screen according to claim 1, wherein the guide portion is provided integrally with the screen. A guide tape attached to the screen of a roll screen,
Provided so as to project on one side, and the convex guide provided so as to extend in one direction,
A concave guide provided to be concave at a position overlapping the convex guide on the other surface side, and provided to extend in the one direction;
And a mounting piece provided thinner than the thickness of the convex guide and the concave guide,
A guide tape in which the surface of the screen and a surface between the convex guide and the screen of the guide portion are substantially flush with each other when the edge of the screen is attached to the attachment piece .

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