Screen device

Abstract

A tension member 8 forming a loop is disposed along the Z-axis direction, the inside of a slidable frame 2 is divided into a first housing part 22 that houses a first guide 6 on one side in the X-axis direction and a second housing part 23 that houses a second guide 7 on the other side in the X-axis direction, the tension member 8 can be inserted into both the first housing part 22 and the second housing part 23, the tension member 8 is hooked to the insides of both one end and the other end of the slidable frame 2 in the Z-axis direction, direction-reversing members 15 for reversing the direction of the tension member 8 along the Z-axis direction are provided, one direction-reversing member 15 is disposed, using a support member 16, at one end of the first housing part 22 in the Z-axis direction, the support member 16 is provided with a pair of releasing pieces 16a2, 16a2 that extend in the Z-axis direction and face one another in the Y-axis direction, and the releasing pieces 16a2 come into contact with needle-shaped parts 92 of screen-retaining members 9 and bend the needle-shaped parts 92 away from the support member 16 in the Y-axis direction when the first guide 6 is pulled out of or housed in the first housing part 22.

Description

[Technical field]

[0001] The present invention relates to a screen device that is applied to light blocking and light adjusting means such as curtains and blinds, as well as to screen doors and partitions. [Background technology]

[0002] Conventionally, this type of screen device generally comprises a screen that can be freely deployed and retracted, and a pair of frames consisting of a first frame and a second frame that are elongated and hollow in the Z-axis direction, at least one of which is slidable in the X-axis direction and arranged opposite to each other in the X-axis direction, with the screen being deployed and retracted in the X-axis direction among three orthogonal axes, the X-axis, the Y-axis, and the Z-axis. When the slidable frame is slid in one direction in the X-axis direction, it is pulled out from inside the slidable frame in the other direction in the X-axis direction, and when the slidable frame is slid in the other direction in the X-axis direction, The screen is provided with a first guide and a second guide housed inside and having a free end at one end, and a tension member housed inside a slidable frame and connecting the free ends of the first guide and the second guide, one end of the screen in the X-axis direction is fixed to the first frame and the other end of the screen in the X-axis direction is fixed to the second frame, the part of the first guide pulled out from inside the slidable frames extends in a straight line in the X-axis direction between one end of the Z-axis direction of the pair of frames, and the part of the second guide pulled out from inside the slidable frames extends in a straight line in the X-axis direction between the other end of the Z-axis direction of the pair of frames.

[0003] One such screen device is known in which a first guide is formed by connecting a plurality of first guide units, and each first guide unit has a pair of side walls arranged opposite each other in the Y-axis direction when the first guide is pulled out from inside a slidable frame, and a bottom wall connecting the both side walls, and in the first guide, one of two adjacent first guide units is pivotally supported to the other first guide unit, and this pivoting allows the first guide to bend in the other Z-axis direction while maintaining its linearity in the X-axis direction, and one end of the unfolding screen in the Z-axis direction is inserted between the both side walls of each first guide unit in the part of the first guide that is pulled out from inside the slidable frame (see, for example, Patent Document 1).

[0004] In the above-mentioned screen device, a pair of pins facing inward in the opposing direction of both side walls are provided at one end in the X-axis direction of both side walls of each first guide unit, which corresponds to one end in the Z-axis direction of the first guide pulled out from the slidable frame, and a pair of openings are opened at the other end in the X-axis direction.The two first guide units are connected by loosely fitting the pins of one first guide unit into the openings of the other first guide unit, with both pins forming a pivot, and each first guide unit is free to pivot.

[0005] A rigid protrusion is provided on the side of each of the first guide units on the side where the pins are provided, protruding inward in the opposing direction of the side walls. In the first guide, the rigid protrusion extends along a virtual line within a plane including the virtual line connecting the center of the pivot of each of the first guide units in the connecting direction of the first guide units. When the first guide is pulled out in the other X-axis direction as the slidable frame slides in one X-axis direction, the rigid protrusion pierces one Z-axis end of the screen inserted between the both walls of each of the first guide units in the pulled-out portion of the first guide, and holds the one Z-axis end of the screen so as not to come off from the pulled-out portion of the first guide even if the deployed screen is subjected to an external force such as wind pressure.

[0006] However, although the first guide units are rigid protrusions, they are generally integrally molded resin products, and as the screen is deployed and retracted, they repeatedly pierce and fall off one end of the screen in the Z-axis direction, causing problems such as bending and deformation, or breaking and breaking. In addition, the type of screen is generally changed depending on the purpose and installation location of the screen device. Therefore, if the molding material of each of the first guide units is stronger than the screen, there is a risk that the one end of the screen in the Z-axis direction will be damaged when the rigid protrusion pierces it. In order to prevent this damage to the screen, in the case of the above screen device, it is necessary to manufacture multiple types of first guide units using materials corresponding to the types of screens. As a result, there are multiple types of first guides.

[0007] Therefore, the applicant has proposed a screen device that can suppress damage to the Z-axis end of the screen that is inserted into the first guide even when the screen is repeatedly unfolded and stored, and that can form the first guide using only one type of first guide unit regardless of the type of screen (Patent Application No. 2020-038505 (unpublished)).

[0008] In the above-mentioned screen device, a pair of pins facing outward in the opposing direction of both side walls are provided at one end in the X-axis direction of both side walls of each first guide unit, and a pair of openings are opened at the other end in the X-axis direction. Two adjacent first guide units are connected by loosely fitting each pin of one first guide unit into each opening of the other first guide unit, both pins form a pivot, and each first guide unit is free to pivot.

[0009] In addition, rail portions are provided on the inner side of both side walls in the opposing direction of each first guide unit, and these rail portions extend along an imaginary line within a plane including the imaginary line connecting the centers of the pivot axes of each first guide unit in the connection direction of the first guide units, and support pieces protruding inward in the opposing direction of both side walls are provided at the end edges of both side walls farther away from the bottom wall in the other Z-axis direction than the rail portions.

[0010] Furthermore, a screen removal prevention member having a long base that is freely bendable in the pivot direction of each first guide unit and a number of needle-shaped portions attached at intervals is removably attached to the inner side in the opposing direction of both side walls of each first guide unit, and when each screen removal prevention member is in the attached state, the base is supported between each rail portion and each support piece of each first guide unit, and all of the needle-shaped portions protrude inward in the opposing direction of both side walls of each first guide unit.

[0011] When the first guide is pulled out in the other X-axis direction as the slidable frame slides in one direction, the needle-shaped portion of each screen removal member penetrates into one Z-axis end of the screen that is inserted between both side walls of each first guide unit in the pulled-out portion of the first guide, making the screen unable to be removed from the pulled-out portion of the first guide. On the other hand, when the first guide is stored inside the slidable frame as the slidable frame slides in the other X-axis direction, the needle-shaped portion of each screen removal member comes out of one Z-axis end of the screen. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] European Patent Publication No. 2333229 Summary of the Invention [Problem to be solved by the invention]

[0013] However, after further investigation, the previously proposed screen device was found to have some points that need to be improved. That is, in order to make the length of the first and second guides stored in the slidable frame equal to the length of the first and second guides pulled out from the frame, to reliably slide the slidable frame parallel to the other frame arranged opposite to it in the X-axis direction, and to realize this parallel sliding by opening and closing the slidable frame at any position in the Z-axis direction, it is preferable that the tension member forms a loop arranged in the Z-axis direction. Also, in order to make the overall length of the first and second guides correspond to the dimension in the X-axis direction of an opening such as a window frame or door frame in which the screen device is installed, it is preferable that the first and second guides can be stored in the slidable frame separately and that they pass each other inside the slidable frame. That is, it is necessary to divide the inside of the slidable frame into a first storage section that stores the first guide and a second storage section that stores the second guide.

[0014] In this case, the tension member forming the loop must be insertable into both the first storage section and the second storage section, and a direction-changing member for changing the direction of the tension member in the Z-axis direction must be provided inside each of the Z-axis end and the other Z-axis end of the slidable frame. In addition, since the Z-axis end of the slidable frame corresponds to the entrance and exit section where the first guide is pulled out from the first storage section and stored in the first storage section, the direction-changing member provided at the Z-axis end of the slidable frame must be disposed in the gap between the protruding tips of the needle-shaped parts of the screen removal prevention members attached to the first guide units of the first guide. Therefore, in order to dispose the direction-changing member in this way, it is essential to provide a support member for supporting the direction-changing member at the Z-axis end of the slidable frame.

[0015] However, the gap between the protruding tips of the needle-shaped parts of each screen removal preventing member is very narrow to allow the needle-shaped parts to pierce one end of the screen in the Z-axis direction. In addition, the support member is required to have a strength sufficient to withstand the force applied to the direction-changing member as a reaction to the tension applied to the tension member. For this reason, it is impossible to reduce the dimension of the support member in the Y-axis direction to less than the gap between the protruding tips of the needle-shaped parts of each screen removal preventing member, and there is no way to avoid contact between the support member and the needle-shaped parts of each screen removal preventing member. As a result, depending on the selection of materials for forming the support member and the needle-shaped parts of each screen removal preventing member, there is a concern that the support member may be worn, or the needle-shaped parts of each screen removal preventing member may be deformed or damaged.

[0016] In consideration of the above points, the present invention has an object to provide a screen device that suppresses contact between the support member that supports the direction changing member that changes the direction of the tension member that forms a loop in the Z-axis direction and the needle-shaped portion of each screen removal prevention member, thereby eliminating problems such as wear on the support member as well as deformation and damage to the needle-shaped portion of the screen removal prevention member attached to the first guide. [Means for solving the problem]

[0017] In order to solve the above problems, the present invention provides a screen that can be freely deployed and stored, and a pair of frames consisting of a first frame and a second frame that are elongated and hollow in the Z-axis direction, at least one of which is slidable in the X-axis direction and arranged opposite to each other in the X-axis direction, with the screen being deployed and stored in the X-axis direction among three orthogonal axes, the X-axis, the Y-axis, and the Z-axis; and when the slidable frame is slid in one direction in the X-axis direction, a first frame is pulled out from inside the slidable frame in the other direction in the X-axis direction, and when the slidable frame is slid in the other direction in the X-axis direction, a tension member that is housed inside a slidable frame and connects the free ends of the first guide and the second guide, one end of the screen in the X-axis direction is fixed to the first frame and the other end of the screen in the X-axis direction is fixed to the second frame, and the portion of the first guide that is pulled out from inside the slidable frame extends linearly in the X-axis direction between one end of the pair of frames in the Z-axis direction, and the portion of the second guide that is pulled out from inside the slidable frame extends linearly in the X-axis direction between the other end of the pair of frames in the Z-axis direction. The device includes a first guide formed by connecting a plurality of first guide units, each of which has a pair of side walls arranged opposite to each other in the Y-axis direction and a bottom wall connecting both side walls, and in the first guide, one of two adjacent first guide units is pivotally supported to the other first guide unit, and this pivoting allows the first guide to bend in the other Z-axis direction while maintaining linearity in the X-axis direction, and to be deployed between both side walls of each first guide unit in the portion of the first guide pulled out from inside the slidable frame. One end of the screen in the Z axis direction is inserted, and one end of both side walls of each first guide unit in the X axis direction is provided with a pair of pins pointing outward in the opposing direction of both side walls, and a pair of openings is opened in the other end in the X axis direction, two adjacent first guide units are connected by loosely fitting each pin of one first guide unit into each opening of the other first guide unit, both pins form a pivot, and each first guide unit is freely pivotable, and rail portions are provided on the inner parts of both side walls of each first guide unit in the opposing direction, and these rail portionsSupport pieces extending along an imaginary line connecting the centers of the pivots of each first guide unit in the coupling direction of the first guide units and protruding inward in the opposing direction of both side walls are provided at the edge portions of both side walls farther in the other Z-axis direction from the bottom wall than the rail portions, and a screen removal preventing member having a long base portion bendable in the pivot direction of each first guide unit and a number of needle-shaped portions attached at intervals to the long base portion is removably attached to the inside of the opposing direction of both side walls of each first guide unit, and when each screen removal preventing member is attached, the base portion is supported between each rail portion and each support piece of each first guide unit. When the first guide is pulled out in the other X-axis direction as the slidable frame slides in one X-axis direction, the needle-like portions of each screen removal member pierce one end of the screen in the Z-axis direction that is inserted between the both walls of each first guide unit in the pulled-out portion of the first guide, making it impossible for the screen to be removed from the pulled-out portion of the first guide. On the other hand, when the first guide is stored inside the slidable frame as the slidable frame slides in the other X-axis direction, each In the screen retaining member, the needle-shaped portion can be removed from one end of the screen in the Z-axis direction, and the tension member forms a loop and is disposed in the Z-axis direction. The inside of the slidable frame is partitioned into a first storage section that stores a first guide on one side in the X-axis direction and a second storage section that stores a second guide on the other side in the X-axis direction, and both the first storage section and the second storage section can have the tension member inserted therethrough. The tension member is hung inside each of the one end and the other end of the slidable frame in the Z-axis direction, and a direction changing member is provided for changing the direction of the tension member in the Z-axis direction. A support member that supports the direction-changing member is provided inside the end portion, and the direction-changing member is disposed via this support member in a gap between the protruding tips of the needle-shaped portions of each screen removal preventing member attached to each first guide unit of the first guide, at one end portion in the Z-axis direction of the first storage section, and the support member is provided with a pair of escape pieces that extend in the Z-axis direction and face each other in the Y-axis direction, and each escape piece comes into contact with the needle-shaped portion of each screen removal preventing member when the first guide is pulled out of the first storage section and when it is stored in the first storage section, thereby bending the needle-shaped portions and moving them away from the support member in the Y-axis direction.

[0018] According to the present invention, the pair of escape pieces provided on the support member that supports the direction changing member that changes the direction of the tension member forming the loop in the Z-axis direction can bend the needle-shaped portions of each screen mounting member and move them away from the support member in the Y-axis direction when the first guide is pulled out of the first storage section and when it is stored in the first storage section. This suppresses contact between the support member and the needle-shaped portions of each screen removal preventing member, and eliminates problems such as wear on the support member and deformation and damage to the needle-shaped portions of the screen removal preventing members attached to the first guide.

[0019] In the present invention, it is preferable that the support member includes a fixing part fixed inside one end of the slidable frame in the Z axis direction and a support part arranged on one side of the fixing part in the X axis direction and incorporating the direction changing member, and each of the relief pieces includes a first relief part protruding from the support part in the other Z axis direction and a second relief part arranged on the outside of the first relief part in the opposing direction of the two relief pieces, and the first relief part has a first inclined surface on a side surface on one side in the X axis direction that is linearly inclined toward one of the X axis direction and the Z axis direction, and the second relief part has a second inclined surface on an end surface on one side in the Z axis direction that is linearly inclined toward the other side of the X axis direction and one of the Z axis directions. According to this, the needle-like parts of each screen mounting member can be appropriately bent and maintained in a bent state according to the movement of the first guide when the first guide is drawn out of the first storage part and when it is stored in the first storage part. As a result, the needle-shaped portions of each screen removal preventing member are moved away from the support portion in the Y-axis direction, effectively preventing contact between the support portion and the needle-shaped portions of each screen removal preventing member.

[0020] In the present invention, the support member includes a fixed portion fixed inside one end of the slidable frame in the Z-axis direction, and a support portion disposed on one side of the fixed portion in the X-axis direction and incorporating the direction-changing member, and each of the relief pieces includes a first relief portion protruding from the support portion in the other Z-axis direction and a third relief portion protruding from the support portion in one Z-axis direction, and the first relief portion has a first inclined surface on a side surface on one side in the X-axis direction that is linearly inclined toward one of the X-axis direction and the Z-axis direction, and the end surface on one side in the Z-axis direction of the third relief portion is preferably a curved surface that is convexly curved from the X-axis direction toward the Z-axis direction. This allows the needle-shaped portions of each screen mounting member to be appropriately bent and maintained in a bent state according to the movement of the first guide when the first guide is pulled out of the first storage portion and when it is stored in the first storage portion. Therefore, the needle-shaped portions of each screen removal prevention member move away from the support portion in the Y-axis direction, and contact between the support member and the needle-shaped portions of each screen removal prevention member can be effectively suppressed. [Brief description of the drawings]

[0021] [Figure 1] 1 is a partially cutaway cross-sectional view showing an embodiment of a screen unit of the present invention. [Diagram 2] 2 is a perspective view of a main portion showing one embodiment of a first guide of the screen unit shown in FIG. 1. [Diagram 3] 3A is a side view of the first guide shown in FIG. 2, and FIG. 3B is a front view of the first guide shown in FIG. [Figure 4] 3(a) is a side view of the first guide unit shown in FIG. 2 and FIG. 3(a) and (b), (b) is a plan view of the same, (c) is a bottom view of the same, and (d) is a front view of the same. [Diagram 5] 3(a) is a side view of the screen removal preventing member shown in FIG. 2 and FIG. 3(a) and (b), and FIG. [Figure 6] 4 is a cutaway side view of a main portion illustrating a bent state of a screen removal preventing member when a first guide illustrated in FIG. 2 and FIG. 3(a) and (b) is bent. [Figure 7] 2 is a perspective view of a lower block that constitutes the lower end portion of a first frame of the screen device shown in FIG. 1. [Figure 8]FIG. 8 is an exploded perspective view of the lower block shown in FIG. 7 . [Figure 9] FIG. 8 is a cross-sectional view of the lower block shown in FIG. [Figure 10] 8 is a plan view of an essential portion showing the bent state of the needle-shaped portions of each screen prevention member by the escape piece shown in FIG. 7 when the first guide shown in FIG. 2 and FIG. 3(a)(b) is stored in the first storage portion of the first frame. [Figure 11] 9 is a side view showing another embodiment of the relief piece of the support member shown in FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] 1, the screen unit SD of this embodiment includes a screen 1 that can be freely deployed and stored, and is installed in an opening of, for example, a window frame, a door frame, etc., and opens and closes the opening horizontally by the screen 1. That is, in the screen unit SD, the deployment and storage direction of the screen 1 is the X-axis direction of three orthogonal axes, the X-axis, the Y-axis, and the Z-axis direction corresponds to the horizontal direction (the left-right direction in FIG. 1), and the Z-axis direction corresponds to the vertical direction (the up-down direction in FIG. 1). Therefore, in the following description, one side in the X-axis direction is the left, the other side in the X-axis direction is the right, one side in the Z-axis direction is the bottom, and the other side in the Z-axis direction is the top.

[0023] The screen device SD comprises a first frame 2 which is vertically long and hollow and can slide freely in the left-right direction through the opening, and a second frame 3 which is vertically long and hollow and is disposed opposite the first frame 2 in the left-right direction and fixed to the right end of the opening, and the first frame 2 and the second frame 3 form a pair of frames. The left end of the screen 1 is fixed to the first frame 2, and the right end of the screen 1 is fixed to the second frame 3. Specifically, the left end of the screen 1 is fixed to the right end of the first frame 2, and the right end of the screen 1 is fixed to a vertical part of the outer periphery of a roller pipe 31 which is vertically long and hollow and is rotatably housed inside the second frame 3. When a user of the screen device SD performs a closing operation by sliding the first frame 2 to the left, the screen 1 is unwound from the outer periphery of the roller pipe 31 and deployed in the opening, and when the user stops the closing operation, the screen 1 is wound up around the outer periphery of the roller pipe 31 and stored inside the second frame 3. At this time, the first frame 2 automatically slides to the right, and when its right end comes into contact with the left end of the second frame 3, the sliding of the first frame 2 to the right automatically stops.

[0024] In order to realize such automatic storage of the screen 1 inside the second frame 3, a coil spring 31a is provided inside the roller pipe 31. When the first frame 2 is slid leftward and the roller pipe 31 rotates forward inside the second frame 3, and the screen 1 is unwound, the coil spring 31a is twisted around the rotation axis of the roller pipe 31, generating and accumulating a resilient force. When the user stops the closing operation, the accumulated resilient force is released, the roller pipe 31 rotates backward inside the second frame 3, and the screen 1 is wound up around the outer periphery of the roller pipe 31.

[0025] In order to smoothly slide the first frame 2 in the left-right direction, the screen device SD is provided with an upper rail 4 at the upper end of the opening and a lower rail 5 at the lower end of the opening. The upper rail 4 is a hollow member having a U-shaped cross section in the up-down direction, and the upper end of the first frame 2 is inserted inside the upper rail 4. The lower rail 5 is a linear member that is long in the left-right direction. A wheel (not shown) is provided at the lower end of the first frame 2, and this wheel rotates on the lower rail 5. In this way, the first frame 2 is guided by the upper rail 4 and the lower rail 5, and therefore smoothly slides in the left-right direction.

[0026] The screen device SD also includes a first guide 6 and a second guide 7 that are pulled out from inside the first frame 2 when the first frame 2 is slid leftward, and are stored inside the first frame 2 when the first frame 2 is slid rightward. The first guide 6 and the second guide 7 each have a free end 61, 71 at one end, and the portion 62, 72 pulled out from inside the first frame 2 extends linearly in the left-right direction between the lower end and the upper end of the first frame 2 and the second frame 3 as a pair of frames, respectively, while maintaining linearity in the left-right direction. The screen device SD also includes a tension member 8 that is stored inside the first frame 2 and connects the free ends 61, 71 of the first guide 6 and the second guide 7. The tension member 8 forms a loop that does not intersect and is arranged in the vertical direction. The loop formed by the tension member 8 may intersect.

[0027] 2, 3(a)(b), and 4(a), (b), (c), and (d), the first guide 6 is formed by connecting a plurality of first guide units 63. Each first guide unit 63 includes a pair of side walls 63a, 63a arranged opposite to each other in the Y-axis direction shown in FIG. 2, and a bottom wall 63b connecting both side walls 63a, 63a, and in the first guide 6, one of two adjacent first guide units 63, 63 is pivotally supported to the other first guide unit 63. Due to this pivotal support, the first guide 6 maintains linearity in the left-right direction while bending upward. In addition, a pair of pins 63c, 63c pointing outward in the opposing direction of both side walls 63a, 63a are provided at the upper left end of each first guide unit 63, which corresponds to the upper end of the first guide 6 pulled out from inside the first frame 2, and a pair of openings 63d, 63d are opened at the upper right end.

[0028] Specifically, in each side wall 63a of each first guide unit 63, a first recessed portion 63a1 is formed around each pin 63c, recessed inward in the opposing direction of both side walls 63a, 63a. The length of each pin 63c is the same as the recess width of the first recessed portion 63a1, and the outer diameter of each pin 63c and the inner diameter of each opening 63d are large enough that each pin 63c can be loosely fitted into each opening 63d. In addition, in each side wall 63a, a first cutout portion 63a2 is formed by cutting out the periphery of each opening 63d except for the upper end edge of each side wall 63a, and the upper end edge is formed as a protruding piece 63e extending to the right. Furthermore, a mountain portion 63f that protrudes upward is provided at the lower right end of the first recessed portion 63a1. Furthermore, a second recessed portion 63a3 is formed at the lower end of each side wall 63a below the first recessed portion 63a1, the second recessed portion 63a3 being recessed by the same amount as the first recessed portion 63a1. In each first guide unit 63, the bottom wall 63b is disposed at a position corresponding to the upper end of the second recessed portion 63a3 of both side walls 63a, 63a, and has a length from the left end of the second recessed portion 63a3 to below the left end of the first cutout portion 63a2.

[0029] In the first guide 6, two adjacent first guide units 63, 63 are connected by inserting the left end portions of both side walls 63a, 63a of one first guide unit 63 into the inner side of the opposing direction of both side walls 63a, 63a of the right end portion of the other first guide unit 63, and loosely fitting each pin 63c of the other first guide unit 63 into each opening 63d of the one first guide unit 63. At this time, both pins 63c, 63c form a pivot. The first guide 6 is formed by repeating such connections. The pivot range of two adjacent first guide units 63, 63 is from the position where the right end of the lower end of both side walls 63a, 63a of one first guide unit 63 contacts the left end of the lower end of both side walls 63a, 63a of the other first guide unit 63 to the position where each protrusion 63e of both side walls 63a, 63a of one first guide unit 63 contacts the mountain portion 63f of each first recessed portion 63a1 formed on both side walls 63a, 63a of the other first guide unit 63. The pivot range of each first guide unit 63 is the same, and by the pivoting of each first guide unit 63 within the above pivot range, the first guide 6 bends toward the upper end of the first frame 2 when stored inside the first frame 2, as shown in FIG. 1, and moves to the right when pulled out from inside the first frame 2, returning to the original state.

[0030] When the first guide 6 is pulled out from inside the first frame 2, the second recesses 63a3 formed on both side walls 63a of one of the first guide units 63 that pivots among the two adjacent first guide units 63 are inserted into the inner side of the opposing direction of both side walls 63a of the other first guide unit 63. Therefore, in the portion 62 of the first guide 6 pulled out from inside the first frame 2, the outer surfaces in the opposing direction at the lower end of both side walls 63a of each first unit 63 are arranged flush with each other. Also, as described above, the length of each pin 63c is the same as the recess width of the first recesses 63a1, so that the outer surfaces in the opposing direction of both side walls 63a of each pin 63c are arranged flush with the outer surfaces in the opposing direction at the upper end of both side walls 63a.

[0031] Further, in each first guide unit 63, a rail portion 63g is provided on the inner side of both side walls 63a, 63a in the opposing direction, and each rail portion 63g extends along the imaginary line VL in a plane including the imaginary line VL connecting the center of the pivot of each first guide unit 63 in the coupling direction of the first guide unit 63. Furthermore, a support piece 63h is provided on the upper end edge portion of both side walls 63a, 63a that is farther upward from the bottom wall 63b than the rail portion 63g and protrudes inward in the opposing direction of both side walls 63a, 63a. Each support piece 63h is disposed to face each rail portion 63g of each side wall 63a on the side where each support piece 63h is provided in the up-down direction, and forms a hollow storage portion 63i between each rail portion 63g and each side wall 63a (FIG. 4(d)). Specifically, each rail portion 63g has a length from the left end of each first guide unit 63 to the lower left end of the first cutout portion 63a2. Meanwhile, each support piece 63h extends in the left-right direction except for the left end of each first guide unit 63. Also, the front shape of each support piece 63h is L-shaped and includes a locking portion 63h1 that hangs down parallel to each side wall 63a, and an inclined portion 63h2 that extends downward toward the rail portion 63g side, inward in the opposing direction of both side walls 63a, 63a.

[0032] Each rail portion 63g functions as a guide when the screen removal preventing member 9 is attached to and detached from the first guide 6. Referring also to Figs. 5(a) and (b), the screen removal preventing member 9 is composed of a long base portion 91 that is bendable in the pivot direction of each first guide unit 63 of the first guide 6, and a number of needle-shaped portions 92 attached to the base portion 91 at intervals. The screen removal preventing member 9 is attached to the inner side of the opposing side walls 63a, 63a of each first guide unit 63 by inserting the base portion 91 into each storage portion 63i of each first guide unit 63 from either the left or right end of the first guide 6. Each rail portion 63g guides the insertion of the base portion 91 into the storage portion 63i when the screen removal preventing member 9 is attached. When each screen removal prevention member 9 is attached, the base 91 is supported between each rail portion 63g and each support piece 63h, and all of the needle-shaped portions 92 protrude inward in the opposing direction of both side walls 63a, 63a of each first guide unit 63. Furthermore, the screen removal prevention member 9 can be removed from the first guide 6 by being guided by each rail portion 63g, by pulling out the base 91 from inside each storage portion 63i of each first guide unit 63 from either the left or right end of the first guide.

[0033] Specifically, the base 91 is locked by the locking portion 63h1 of the support piece 63h of each first guide unit 63, and all of the needle-shaped portions 92 are inclined toward the bottom wall 63b along the downward slope of the inclined portion 63h2 by the inclined portion 63h2 (FIG. 3(b)). Due to this inclination of all of the needle-shaped portions 92, in the first guide 6, a gap in the Y-axis direction shown in FIG. 2 is formed between the protruding tips of the needle-shaped portions 92 of the two screen removal members 9 attached to the both side walls 63a, 63a of each first guide unit 63.

[0034] Since the base 91 of the screen removal preventing member 9 is bendable in the pivot direction of each first guide unit 63 of the first guide 6 as described above, when the first frame 2 shown in Fig. 1 is bent toward the upper end, the screen removal preventing member 9 is also bent in the same direction as shown in Fig. 6. Also, since each rail portion 63g extends along the imaginary line VL in a plane including the imaginary line VL connecting the centers of the pivots of each first guide unit 63 in the coupling direction as described above, the base 91 of each screen removal preventing member 9 attached to the inner side of the opposing direction of both side walls 63a, 63a of each first guide unit 63 is arranged parallel to the imaginary line VL in a plane including the imaginary line VL as shown in Fig. 3(a). By arranging the base 91 parallel to the imaginary line VL in this manner, the pivoting of each first guide unit 63, i.e., the bending of the first guide 6, is realized smoothly. In addition, since the pivot is located at the upper end of the first guide unit 63, the pivot is disposed above and away from the lower end of the opening where the screen device SD is installed. Therefore, the pivot is not easily affected by dust, sand, mud, etc. that tend to accumulate at the lower end of the opening, and this, together with the smooth bending of the first guide 6, allows the user to perform the closing operation of the first frame 2 smoothly and stably. Similarly, the base 91 of the screen removal prevention member 9 easily returns from the bent state to its original state, so that the first guide 6 also smoothly returns to its original state when it is pulled out from inside the first frame 2. Therefore, the opening operation of the first frame 2 is also performed smoothly and stably.

[0035] The side walls 63a, 63a of each first guide unit 63 are provided with a recess 63j extending in the same direction as the portion 62 of the first guide 6 that is pulled out from inside the first frame 2 and extends in the left-right direction and recessed inward in the facing direction. The left end of each of the side walls 63a, 63a on which the recess 63j is provided is provided with a third recess 63a4 recessed inward in the facing direction of the side walls 63a, 63a, similar to the first recess 63a1 and the second recess 63a3. The third recess 63a4 is located between the first recess 63a1 and the second recess 63a3 on each side wall 63a. The inner surface in the facing direction of the right end of each of the side walls 63a, 63a on which the recess 63j is provided is cut out to form a second cutout 63a5 (FIGS. 4(b)(c)).

[0036] When the first guide 6 is pulled out from inside the first frame 2 and each first guide unit 63 pivots, the second notch 63a5 of the pivoting first guide unit 63 overlaps with the third recess 63a4 of the adjacent first guide unit 63 that has already pivoted. This overlap and the contact between the right end of the lower end of the side walls 63a, 63a of the pivoting first guide unit 63 and the left end of the side walls 63a, 63a of the first guide unit 63 that has already pivoted maintain the linearity of the portion 62 of the first guide 6 pulled out from inside the first frame 2. In addition, the inner faces of the side walls 63a, 63a in the opposing direction in which the recesses 63j are provided are arranged flush with each other.

[0037] In addition, as shown in Fig. 3(b) and Fig. 4(c)(d), in both side walls 63a, 63a of each first guide unit 63, the inner surface in the opposing direction of the lower end of each second recessed portion 63a3 is cut out to form a third cutout portion 63a6. The cutout width of each third cutout portion 63a6 is reduced from the left end to the right end of each second recessed portion 63a3. In addition, a guided piece 63k is provided that continues from the right end of each third cutout portion 63a6 and protrudes inward in the opposing direction of both side walls 63a, 63a. The right end of each guided piece 63k is located below the right end of the bottom wall 63b. When the first guide 6 is pulled out from inside the first frame 2, the guided pieces 63k, 63k engage with one end and the other end of the lower rail 5 in the Y-axis direction shown in FIG. 1, preventing each first guide unit 63 in the pulled-out portion 62 of the first guide 6 from coming off the lower rail 5. On the other hand, when the first guide 6 is stored inside the first frame 2, each third cutout 63a6 smoothly releases the engagement between each guided piece 63k and each of the one end and the other end of the lower rail 5 in the Y-axis direction, making it easier for each first guide unit 63 to come off the lower rail 5. As a result, the first frame 2 can slide more smoothly in the left-right direction.

[0038] Returning to FIG. 1, the right end of the first guide 6 is fixed to the lower end of the second frame 3 and serves as the fixed end. Also, the free end 61 of the first guide 6 is always housed inside the first frame 2. Specifically, the free end 61 is located at the upper end of the adjuster 10 which moves up and down inside the first frame 2. The adjuster 10 is connected to a first guide unit 63 which is located at the upper end when the first guide 6 is housed inside the first frame 2. A massive weight 101 which is elongated in the vertical direction is attached to the adjuster 10. Gravity acting on the weight 101 acts on the portion of the first guide 6 housed inside the first frame 2, and assists the first guide 6 to be smoothly pulled out to the right from inside the first frame 2 against the elastic force of the coil spring 31a built in the roller pipe 31 when the first frame 2 is slid to the left, giving the user a sense of lightness and stability in the closing operation. In addition, gravity acting on the weight 101 provides an appropriate resistance to the first guide 6 being housed inside the first frame 2 when the first frame 2 is slid to the right to house the screen 1 inside the second frame 3. This resistance prevents the screen 1 from being suddenly wound around the outer periphery of the roller pipe 31 due to the release of the elastic force accumulated in the coil spring 31a.

[0039] At the lower end of the first frame 2, a pair of inner surfaces (not shown) facing each other in the Y-axis direction shown in FIG. 1 are provided with curved protrusions 11 curved at a predetermined curvature. The curved protrusions 11 are inserted into the recesses 63j of each first guide unit 63 to guide the first guide 6 to be stored and drawn out from inside the first frame 2. That is, the curved protrusions 11 bend the first guide 6 smoothly upward inside the first frame 2, and are curved at a predetermined curvature so that the first guide 6 can be returned to the right inside the first frame 2. Therefore, the first guide 6 can be stored and drawn out more smoothly inside the first frame 2.

[0040] In the screen device SD, when the first guide 6 is pulled out to the right from inside the lower end of the first frame 2 as the first frame 2 slides to the left, the lower end of the screen 1 is inserted between the side walls 63a, 63a of each first guide unit 63 in the pulled-out portion 62 of the first guide 6. Specifically, the lower end of the screen 1 is inserted into the above-mentioned gap between the protruding tips of the needle-like portions 92 shown in Figures 2 and 3(a) and (b) of the two screen removal preventing members 9 attached to the side walls 63a, 63a of each first guide unit 63. At this time, the needle-like portions 92 of the screen removal preventing members 9 pierce the lower end of the screen 1, making it impossible for the screen 1 to come out of the pulled-out portion 62 of the first guide 6. Also, when the first guide 6 is stored inside the first frame 2 with the rightward sliding of the first frame 2, the needle-like portion 92 of each screen removal prevention member 9 comes off from the bottom end of the stuck screen 1. As described above, in the screen device SD, the screen removal prevention member 9 is removably attached to the inner side of the opposing side walls 63a, 63a of each first guide unit 63 of the first guide 6, so that a plurality of types of screen removal prevention members 9 having a large number of needle-like portions 92 attached to the base 91 corresponding to the types of screen 1 can be prepared in advance. Then, an appropriate one can be selected from them and attached to the both side walls 63a, 63a of each first guide unit 63 of the first guide 6, so that damage to the bottom end of the screen 1 can be suppressed even when the screen 1 is repeatedly deployed and stored. Also, it is not necessary to prepare a first guide unit 63 for each type of screen 1, and the first guide 6 can be formed with only one type of first guide unit 63.

[0041] Each of the first guide units 63 may be an integrally molded product made of hard resin. The screen 1 may be made of cloth or net made of woven resin fibers in consideration of weight reduction. The base 91 of the screen retaining member 9 may be made of soft resin or light metal such as aluminum. The needle-shaped portion 92 may be made of an appropriate material corresponding to the type of the screen 1. The size of each of the needle-shaped portions 92 and the interval between each of the needle-shaped portions 92 may be appropriately set in accordance with the type of the screen 1. For example, when the screen 1 is a knitted fabric or net, each of the needle-shaped portions 92 may be sized to enter the stitches or meshes, and the interval between each of the needle-shaped portions 92 may be equal to the interval between the stitches or meshes. Furthermore, the curved protrusion 11 may be made of a material that is unlikely to cause wear and tear on each of the first guide units 63 even when the first guide units 63 are repeatedly inserted into the recesses 63j.

[0042] Furthermore, the second guide 7 of the screen device SD may be a conventional one. The conventional one is also formed by connecting a plurality of second guide units 73, similar to the first guide 6. Each second guide unit 73 also has a pair of side walls arranged opposite to each other in the Y-axis direction when the second guide 7 is pulled out from inside the first frame 2, and a bottom wall connecting both side walls. In addition, the second guide 7 may also be such that one of two adjacent second guide units 73 is pivotally supported by the other second guide unit 73, and the upper end of the unfolded screen 1 is inserted between both side walls of each second guide unit 73 in the portion 72 pulled out from inside the first frame 2. Similarly to the first guide 6, the right end of the second guide 7 is fixed to the second frame 3, making it a fixed end.

[0043] In the screen device SD, the first guide 6 and the second guide 7 housed inside the first frame 2 are housed in different regions inside the first frame 2. That is, a first guide piece 21 is provided on each of a pair of inner sides of the first frame 2 facing each other in the Y-axis direction, extending in the longitudinal direction of the first frame 2 except for both upper and lower ends of the first frame 2 and protruding inward in the facing direction of both inner sides. The first guide pieces 21 divide the inside of the first frame 2 into a first storage section 22 that houses the first guide 6 and a second storage section 23 that houses the second guide 7. The first storage section 22 is located on the left side, which is one side in the X-axis direction inside the first frame 2, and the second storage section 23 is located on the right side, which is the other side in the X-axis direction inside the first frame 2. In this way, by dividing the storage area of ​​the first guide 6 and the second guide 7 in the first frame 2 into the first storage section 22 and the second storage section 23, the first guide 6 and the second guide 7 stored inside the first frame 2 do not collide with each other and can pass each other inside the first frame 2. Therefore, the overall length of the first guide 6 and the second guide 7 can be made to correspond to the left-right dimension of the opening in which the screen device SD is installed. In addition, the needle-shaped part 92 of the screen removal prevention member 9 attached to the inner side of the opposing direction of both side walls 63a, 63a of each first guide unit 63 in the first guide 6 is not damaged by the second guide 7, and no structural constraints are imposed on the second guide unit 73 forming the second guide 7. Furthermore, in each first guide unit 63 of the first guide 6, the bottom wall 63b is positioned so as to be separated from the lower rail 5 at the part 62 drawn out from the first storage section 22 in order to make it less susceptible to the influence of dust, sand, mud, etc. that tend to accumulate at the lower end of the opening in which the screen device SD is installed. For this reason, the vertical dimension of each first guide unit 63 of the first guide 6 is relatively large. Therefore, by positioning the first storage section 22 on the left side inside the first frame 2, the curvature of the bending when the first guide 6 is stored in the first storage section 22 and drawn out can be made relatively large, and the first guide 6 can be stored in the first storage section 22 and drawn out from the first storage section 22 more smoothly.

[0044] The protruding ends of both first guide pieces 21, 21 are disposed apart in the Y-axis direction, and the tension member 8 can be inserted into both the first storage section 22 and the second storage section 23. Both first guide pieces 21, 21 guide the elevation of the adjuster 10 of the first guide 6, and are connected to a second guide unit 73 located at the lower end when the second guide 7 is stored in the second storage section 23, and guide the elevation of the guided member 12 that forms the free end 71 of the second guide 7. The free end 71 of the second guide 7 is located at the lower end of the guided member 12.

[0045] In this way, when the first guide 6 and the second guide 7 are respectively stored in the first storage section 22 and the second storage section 23, which are different regions inside the first frame 2, the first frame 2 has a relatively large visible dimension (dimension in the left-right direction). In consideration of this, it is desirable to adopt a second guide unit 73 in which the vertical dimensions of both side walls of the second guide unit 73 at the portion 72 pulled out from the second storage section 23 of the first frame 2 are shorter than the vertical dimensions of both side walls 63a, 63a of the first guide unit 63 at the portion 62 pulled out from the first storage section 22 of the first frame 2, as shown in FIG. In this case, if it is difficult to provide the second guide 7 with a screen removal prevention member 9 such as that attached to the first guide 6, a screen removal prevention member 13 long in the left-right direction can be attached to each of a pair of inner surfaces of the upper rail 4 facing each other in the Y-axis direction via support pieces or the like. The screen removal-preventing member 13 can have a similar configuration to the screen removal-preventing member 9, for example, and in this case, each needle-shaped portion of the screen removal-preventing member 13 pierces the upper end portion of the deployed screen 1, thereby preventing the deployed screen 1 from coming off the upper rail 4 even when subjected to an external force such as wind pressure. Furthermore, damage to the upper end portion of the screen 1 can be prevented even when the screen 1 is repeatedly deployed and stored.

[0046] In addition, in the screen device SD, a bent guide 14 having a curved surface 141 curved at a predetermined curvature is provided at the upper end of the second storage section 23 of the first frame 2. The curved surface 141 of the bent guide 14 can come into contact with the bottom wall of each second guide unit 73 forming the second guide 7. The bent guide 14 pivots each second guide unit 73 by contacting the curved surface 141 with the bottom wall of each second guide unit 73, bending the second guide 7 downward and returning it to the left and right, thereby smoothly realizing the storage and withdrawal of the second guide 7 into and from the second storage section 23 as the first frame 2 slides in the left and right direction. The predetermined curvature of the curved surface 141 can be appropriately set in consideration of such bending and returning of the second guide 7.

[0047] Furthermore, in the screen device SD, direction-changing members 15, 15 such as pulleys are provided at both upper and lower ends of the first storage section 22 of the first frame 2. A tension member 8 is hung on each direction-changing member 15, and each direction-changing member 15 changes the direction of the tension member 8 in the Z-axis direction and applies a predetermined tension to the tension member 8.

[0048] 7, 8 and 9, the lower end of the first frame 2 is formed of a lower block LB that can be separated and connected to other parts of the first frame 2. The lower block LB is a hollow member that is open upward, downward and to the right, and an upper opening LBa is disposed in a portion that corresponds to the lower end opening of the first storage section 22 shown in Fig. 1. The lower block LB is also provided with a support member 16 that supports the direction changing member 15 by disposing it near the upper end opening LBa. In other words, the direction changing member 15 is disposed at the lower end of the first storage section 22 via the support member 16.

[0049] Furthermore, the lower block LB is divided into two parts, a first part LB1 and a second part LB2, at the center in the Y-axis direction. The curved protrusions 11 are integrally formed on the opposing inner surfaces of the first part LB1 and the second part LB2 when the lower block LB is assembled. The curved protrusions 11 are located at portions corresponding to the movement of the recesses 63j of each first guide block 63 when the first guide 6 is stored in the first storage section 22 and pulled out as shown in FIG.

[0050] The support member 16 includes a support portion 16a in the left half portion, in which the direction-changing member 15 is built in together with its rotation shaft 15a. The support portion 16a has two insertion holes 16a1 penetrating in the vertical direction for hanging the tension member 8 on the direction-changing member 15 and changing the direction in the vertical direction. The support member 16 also includes a fixing portion 16b for fixing to the lower block LB in the right half portion. The fixing portion 16b is provided with a pair of wedge-shaped projections 16b1, 16b1 facing each other in the Y-axis direction in order to fix the support member 16 to the first portion LB1 and the second portion LB2. The support member 16 is inserted into the lower block LB from below and fixed to the lower block LB. For this purpose, a second guide piece 16b2 for guiding the insertion of the support member 16 is provided at the right end of the fixing portion 16b. The second guide piece 16b2 protrudes downward from the lower end of the fixing portion 16b. Furthermore, a pair of relief pieces 16a2, 16a2 extending in the vertical direction and facing each other in the Y-axis direction are provided on each side surface of the support member 16 in the Y-axis direction. Each relief piece 16a2 is a first relief portion 16a that protrudes upward from the upper end of the support portion 16a. 21 and the first relief portion 16a 21 The second relief portion 16a is disposed on the outer side of the opposing direction of the relief pieces 16a2, 16a2. 22 The second relief portion 16a 22 The lower end of the support 16a is accommodated in the lower end of the support 16a.

[0051] At the right end of each of the first portion LB1 and the second portion LB2 of the lower block LB, a dovetail groove LB3 for fixing the support member 16 is provided at a portion corresponding to the wedge-shaped protrusion 16b1 of the fixing portion 16b of the support member 16, and a guide groove LB4 is provided at the right end of the first portion LB1. When fixing the support member 16 to the lower block LB, the first portion LB1 and the second portion LB2 are overlapped so that the curved protrusions 11 face each other inside the lower block LB, and the support member 16 is inserted into the lower block LB from below. At this time, the second guide piece 16b2 of the fixing portion 16b of the support member 16 is aligned so that it can be inserted into the guide groove LB4 of the lower block LB, and the support member 16 is pushed up. As the support member 16 is pushed up, the wedge-shaped protrusion 16b1 of the fixing portion 16b is inserted into the dovetail groove LB3 from below and finally fits in, so that the support member 16 is fixed inside the lower block LB. When the support member 16 is in a fixed state, the direction-changing member 15 built into the support portion 16a is positioned inside the lower end portion of the lower block LB, in a portion corresponding to the gap at the protruding tip of the needle-shaped portion 92 of each screen removal member 9 mounted on the inner side of the opposing side walls 63a, 63a of each first guide unit 63 of the first guide 6.

[0052] On the other hand, the support portion 16a of the support member 16 is disposed between both side walls 63a, 63a of each first guide unit 63 of the first guide 6. Thus, the support portion 16a is provided with a pair of escape pieces 16a2, 16a2 as described above. Each escape piece 16a2 comes into contact with the needle-shaped portion 92 of each screen removal preventing member 9 when the first guide 6 is pulled out of the first storage portion 22 and when it is stored in the first storage portion 22. Therefore, as shown in FIG. 10, when the first guide 6 is pulled out of the first storage portion 22 and when it is stored in the first storage portion 22, each escape piece 16a2 bends the needle-shaped portion 92 of each screen removal preventing member 9 toward the inner side of the opposing both side walls 63a, 63a of each first guide unit 63, and moves the needle-shaped portion 92 of each screen removal preventing member 9 away from the support portion 16a in the Y-axis direction. Therefore, contact between the support member 16 and the needle-like portions 92 of each screen removal preventing member 9 is suppressed, and problems such as wear on the support member 16 and deformation or damage to the needle-like portions 92 are eliminated.

[0053] Specifically, in each of the relief pieces 16a2 shown in FIGS. 7, 8, and 9, the first relief portion 16a 21 The left side surface of the first inclined surface 16a is inclined linearly downward to the left. 21a The second relief portion 16a 22 The second inclined surface 16a has a lower end surface that is inclined downward to the right. 22a The second inclined surface 16a 22a The upper end of each screen retaining member 9 is chamfered to form a convex curved surface. When the first guide 6 is pulled out of the first storage section 22, the first guide 6 moves linearly downward through the first storage section 22. For this reason, in order to smoothly bend the needle-shaped portion 92 of each screen retaining member 9, a first inclined surface 16a is provided on the left side surface. 21a The first relief portion 16a has 21 The first inclined surface 16a 21a The first inclined surface 16a contacts the intermediate portion of the needle-shaped portion 92 of each screen retaining member 9 between the base portion 91 and the tip end in the protruding direction, and bends the needle-shaped portion 92 toward the inner side of the opposing side walls 63a, 63a of each first guide unit 63. 21a The first guide 6 continues to contact the bent needle-shaped portion 92 up to the tip end in the protruding direction, thereby maintaining the bent state. In addition, since the first guide 6 bends from the lower right to the upper left when stored in the first storage section 22, in order to smoothly bend the needle-shaped portion 92 of each screen pull-out preventing member 9, the lower end surface must be in contact with the second inclined surface 16a. 22a The second relief portion 16a 22 The second inclined surface 16a is effective. 22a The second inclined surfaces 16a come into contact with the portions of the needle-shaped portions 92 of the screen retaining members 9 close to the base portions 91, and bend the needle-shaped portions 92 toward the inner faces of the opposing side walls 63a, 63a of the first guide units 63. 22a7, 8, and 9, the needle-like portion 92 of each screen removal preventing member 9 can be appropriately bent toward the inner surface of the opposing side walls 63a, 63a of each first guide unit 63 in accordance with the movement of the first guide 6 when the first guide 6 is pulled out from the first storage section 22 and when the first guide 6 is stored in the first storage section 22, and the bent state can be maintained. Therefore, the needle-like portion 92 of each screen removal preventing member 9 moves away from the support section 16a in the Y-axis direction, and contact between the support member 16 and the needle-like portion 92 of each screen removal preventing member 9 can be effectively suppressed.

[0054] In addition, each of the relief pieces 16a2 is not limited to the form shown in FIG. 7, FIG. 8, and FIG. 9. As shown in FIG. 11, the first relief portion 16a 21 At the same time, a third relief portion 16a protruding downward from the support portion 16a 23 and a third relief portion 16a 23 The lower end surface of the curved surface 16a is curved convexly toward the lower right. 23a In each of the relief pieces 16a2 shown in FIG. 21 and the third relief portion 16a 23 are arranged on the same vertical plane. 23 Curved surface 16a 23a The first relief portion 16a of each relief piece 16a2 shown in FIGS. 21 The first inclined surface 16a 21a That is, when the first guide 6 is stored in the first storage portion 22, the curved surface 16a 23a The curved surface 16a contacts the intermediate portion of the needle-shaped portion 92 of each screen retaining member 9 from the base portion 91 side to the tip side in the protruding direction, and bends the needle-shaped portion 92 toward the inner side of the opposing side walls 63a, 63a of each first guide unit 63. 23a7, 8, and 9, the escape piece 16a2 shown in Fig. 10 can bend the needle-shaped portion 92 of each screen removal preventing member 9 toward the inner surface in the opposing direction of both side walls 63a, 63a of each first guide unit 63 and can maintain the bent state when the first guide 6 is pulled out of the first storage section 22 and stored in the first storage section 22. Therefore, the needle-shaped portion 92 of each screen removal preventing member 9 moves away from the support portion 16a in the Y-axis direction, and contact between the support member 16 and the needle-shaped portion 92 of each screen removal preventing member 9 can be effectively suppressed.

[0055] In addition, the third relief portion 16a of each relief piece 16a2 shown in FIG. 23 The second relief portion 16a of each relief piece 16a2 shown in FIGS. 22 Similarly, the first relief portion 16a 21 16a2, 16a2 may be disposed on the outer side in the opposing direction of the two relief pieces 16a2, 16a2.

[0056] The tension member 8 shown in FIG. 1 is, for example, a string, which is hung on both direction change members 15, 15 arranged at the lower end and upper end of the first storage section 22, and is inserted from the first storage section 22 to the second storage section 23 through between the first guide pieces 21, 21. A knot is formed at one end of the tension member 8. This knot is inserted into a slit (not shown) extending downward, which is formed at the lower end of the guided member 12 forming the free end 71 of the second guide 7, and is hooked on the lower end edge of the guided member 12 and fixed to the guided member 12. The other end of the tension member 8 is hung from above around the right end of the head of the screw and directed upward again, and a knot is formed at the upper end. This knot is inserted into a slit (not shown) extending downward, which is formed at the upper end of the guided member 12, and is hooked on the upper end of the guided member 12 and fixed to the guided member 12. The screw is passed through an elongated hole extending in the vertical direction formed in the guided member 12. Then, the vertical tightening position of the screw relative to the guided member 12 is adjusted, and a predetermined tension is applied to the tension member 8. Furthermore, the tension member 8 is pressed leftward by a screw and fixed to the upper end of the adjuster 10 forming the free end 61 of the first guide 6 at a portion located in the first storage section 22 between the two direction changing members 15, 15. In this way, the tension member 8 connects the free end 61 of the first guide 6 and the free end 71 of the second guide, forming a loop disposed in the vertical direction. The tension member 8 forming such a loop makes the storage length and the pull-out length of the first guide 6 in the first storage section 22 the same as the storage length and the pull-out length of the second guide 7 in the second storage section 23, and as a result, the first frame 2 can be reliably slid parallel to the second frame 3. The parallel sliding of the first frame 2 is also achieved when the user performs a closing operation at any position in the vertical direction of the first frame 2. Furthermore, the parallel sliding of the first frame 2 is also achieved during an opening operation by the elastic force of the coil spring 31a. The predetermined tension applied to the tension member 8 can be appropriately set in consideration of the above-mentioned sliding of the first frame 2.

[0057] Although the present invention has been described above with respect to the above embodiment, the present invention is not limited to the above embodiment. For example, the screen device SD may be an automatic storage type that utilizes the elastic force of the coil spring 31a as in the above embodiment, an automatic opening and closing type that includes a motor and utilizes the torque when the motor rotates to unfold and store the screen 1, or a manual opening and closing type that manually unfolds and stores the screen 1. Also, the screen 1 may be one that has a plurality of foldable pleats formed thereon. Furthermore, in the case of the manually opening and closing type screen device SD, the second frame 3 is not fixed to the opening, but is made slidable in the left and right directions like the first frame 2, so that the screen device SD can be made into a double-opening type. The Z-axis direction is not limited to the vertical direction, and may be any direction perpendicular to the X-axis direction. For example, the screen device SD can be installed in an opening that is inclined with respect to the vertical plane. [Explanation of symbols]

[0058] SD...screen device, 1...screen, 2...first frame, 22...first storage section, 23...second storage section, 3...second frame, 6...first guide, 61...free end of first guide 6, 62...portion of first guide 6 pulled out from inside first frame 2, 63...first guide unit, 63a...side wall, 63b...bottom wall, 63c...pin, 63d...opening, 63g...rail portion, 63h...support piece, 63j...recess, 7...second guide, 71...free end of second guide 7, 8...tension member, 9...screen removal prevention member, 91...base, 92...needle-shaped portion, VL...virtual line, 15...direction change member, 16...support member, 16a...support portion, 16b...fixed portion, 16a2...relief piece, 16a 21 …First relief portion, 16a 21a …First slope, 16a 22 …Second relief portion, 16a 22a …Second slope, 16a 23 …Third relief, 16a 23a ...curved surfaces.

Claims

1. A screen that can be freely deployed and stored; a pair of frames consisting of a first frame and a second frame that are elongated and hollow in the Z-axis direction, at least one of which is slidable in the X-axis direction and arranged opposite to each other in the X-axis direction, with the screen being deployed and stored in the X-axis direction of three orthogonal axes, the X-axis, the Y-axis, and the Z-axis; and a frame that has a free end at one end and is pulled out from inside the slidable frame in the other X-axis direction when the slidable frame is slid in one X-axis direction, and is stored inside the slidable frame when the slidable frame is slid in the other X-axis direction. a tension member housed inside a slidable frame and connecting free ends of the first guide and the second guide, one end of the screen in the X-axis direction is fixed to the first frame and the other end of the screen in the X-axis direction is fixed to the second frame, the portion of the first guide pulled out from inside the slidable frames extends linearly in the X-axis direction between one ends of the pair of frames in the Z-axis direction, and the portion of the second guide pulled out from inside the slidable frames extends linearly in the X-axis direction between the other ends of the pair of frames in the Z-axis direction, The first guide is formed by connecting a plurality of first guide units, each of which has a pair of side walls arranged opposite each other in the Y-axis direction and a bottom wall connecting the both side walls, and of two adjacent first guide units in the first guide, one first guide unit is pivotally supported to the other first guide unit, and this pivoting allows the first guide to bend in the other Z-axis direction while maintaining its linearity in the X-axis direction, and one end of the unfolding screen in the Z-axis direction is inserted between the both side walls of each first guide unit in the portion of the first guide pulled out from inside the slidable frame, a pair of pins facing outward in the opposing direction of both side walls are provided at one end in the X-axis direction of both side walls of each first guide unit, and a pair of openings are formed at the other end in the X-axis direction; two adjacent first guide units are connected by loosely fitting the pins of one first guide unit into the openings of the other first guide unit, the two pins form a pivot, and each first guide unit is freely pivotable; a rail portion is provided on an inner portion of each of the side walls of each of the first guide units in the opposing direction, the rail portion extends along an imaginary line within a plane including an imaginary line connecting the centers of the pivots of each of the first guide units in a coupling direction of the first guide units, and a support piece is provided at an end edge portion of each of the side walls that is farther away from the bottom wall in the other Z-axis direction than the rail portion and protrudes inward in the opposing direction of the side walls; a screen removal prevention member having a number of needle-shaped portions attached at intervals to a long base portion which is bendable in the pivot direction of each first guide unit, is removably attached to the inside of both side walls of each first guide unit in the opposing direction, and when each screen removal prevention member is in an attached state, the base portion is supported between each rail portion and each support piece of each first guide unit, and all of the needle-shaped portions protrude inward in the opposing direction of both side walls of each first guide unit, When the first guide is pulled out in the other X-axis direction as the slidable frame slides in one X-axis direction, the needle-shaped portions of each screen removal member pierce one Z-axis direction end of the screen inserted between both side walls of each first guide unit in the pulled-out portion of the first guide, making it impossible for the screen to be removed from the pulled-out portion of the first guide, while when the first guide is stored inside the slidable frame as the slidable frame slides in the other X-axis direction, the needle-shaped portions of each screen removal member come out of one Z-axis direction end of the screen, The tension member forms a loop and is disposed in the Z-axis direction; The inside of the slidable frame is divided into a first storage section that stores the first guide on one side in the X-axis direction and a second storage section that stores the second guide on the other side in the X-axis direction, and both the first storage section and the second storage section can have a tension member inserted therethrough; A tension member is hung inside each of one end and the other end of the slidable frame in the Z axis direction, and a direction changing member is provided for changing the direction of the tension member in the Z axis direction, and a support member for supporting the direction changing member is provided inside one end of the slidable frame in the Z axis direction, and the direction changing member is disposed, via this support member, in the gap between the protruding tips of the needle-shaped portions of each screen removal member attached to each first guide unit of the first guide, at one end of the first storage section in the Z axis direction, The support member is provided with a pair of escape pieces extending in the Z-axis direction and facing each other in the Y-axis direction, and each escape piece contacts the needle-shaped portion of each screen removal member when the first guide is pulled out of the first storage section and when it is stored in the first storage section, thereby bending the needle-shaped portion and moving it away from the support member in the Y-axis direction.This screen device is characterized by the above.

2. The support member comprises a fixed portion fixed inside one end of a slidable frame in the Z-axis direction, and a support portion arranged on one side of the fixed portion in the X-axis direction and incorporating the direction-changing member, and each of the relief pieces comprises a first relief portion protruding from the support portion in the other Z-axis direction, and a second relief portion arranged outside the first relief portion in the opposing direction of the two relief pieces, and the first relief portion has a first inclined surface on a side surface on one side in the X-axis direction that inclines linearly toward one of the X-axis direction and the Z-axis direction, and the second relief portion has a second inclined surface on an end surface on one side in the Z-axis direction that inclines linearly toward the other side of the X-axis direction and one side of the Z-axis direction.

3. The screen device described in claim 1, characterized in that the support member comprises a fixed portion fixed inside one end of a slidable frame in the Z axis direction, and a support portion arranged on one side of the fixed portion in the X axis direction and incorporating the direction-changing member, and each of the escape pieces comprises a first escape portion protruding from the support portion in the other Z axis direction and a third escape portion protruding from the support portion in one Z axis direction, the first escape portion having a first inclined surface on its side on one side in the X axis direction that slopes linearly toward one of the X axis direction and the Z axis direction, and the end face on one side in the Z axis direction of the third escape portion is a curved surface that curves convexly from the X axis direction toward the Z axis direction.

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