JP2020063590A - screen - Google Patents

Abstract

To provide a screen suitably used for partitioning space in a lounge and office allowing another screen to be laterally connected to and disconnected from other screen easily, .SOLUTION: A screen S1 comprises: a magnet receiving cavity 72s in an edge part; and a magnet M for connection movably received in the magnet receiving cavity 72s, wherein the magnet receiving cavity 72s has a circular arc surface R in its inside and the magnet M is in a square column shape to allow two adjacent corners Ma to be respectively brought in line contact to the circular arc surface R at the same time.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a screen preferably used when partitioning a space in a lounge or an office.

  Conventionally, there is known one in which a plurality of screens are mechanically connected via a joint member (for example, see Non-Patent Document 1).

  Such screen systems are used in many places because they can be arranged in an orderly manner without disturbing each other, but in situations where the screens are attached and detached freely, the screens can be inserted and removed. It takes time and effort, and some measures are desired.

"Panel Screen", KOKUYO General Catalog 2018 Edition, KOKUYO CORPORATION, December 2017, p. 201

  The present invention has been made in view of such circumstances, and an object thereof is to provide a screen that can be easily laterally connected to or disconnected from another screen or the like.

  In the screen according to the invention of claim 1, a magnet accommodating chamber is provided at an edge portion, and a magnet for connection is movably accommodated in the magnet accommodating chamber, and the magnet accommodating chamber has an arc surface inside. And the magnet is a quadrangular prism capable of simultaneously making line contact with two adjacent corners of the arc surface.

  That is, in this screen, a square pole-shaped magnet is brought into line contact with the arc surface of the magnet housing chamber at two positions separated by a distance corresponding to the maximum width dimension of the magnet.

  A preferred structure of the magnet is magnetized such that a portion located between a pair of adjacent corners has an N pole and the other adjacent pair has a S pole located between the corners. Can be mentioned.

  When the present invention is applied to a screen having a frame structure having a plurality of frames connected in a frame shape, it is preferable to provide the magnet accommodating chamber in the frame. When a plurality of frames are connected by a frame connecting member that fits in the frame, it is preferable to form the magnet accommodating chamber by using the frame connecting member.

  When the frame is made of a pipe material made of a non-magnetic material having a circular cross section, a part or the whole of the inner peripheral surface of the frame is an arc where the two corners of the magnet make line contact. You can use it as a surface.

  In order to reduce the number of assembling steps, a magnet holder extending into one frame is provided at one end of the non-magnetic frame connecting member, and the inner surface of the magnet holder and the inner peripheral surface of the one frame are provided. It is preferable that the magnet accommodating chamber is formed in the. In this case, the number of parts can be reduced by integrally molding the frame connecting member and the magnet holder with resin.

  What forms a magnet accommodating chamber without using a frame connecting member is one in which a magnet holder formed by forming the magnet accommodating chamber inside a peripheral wall is attached to an edge portion, and at least an inner surface of the peripheral wall is attached. A part of the arc surface may be used.

  According to the present invention, it is possible to provide a screen that can be easily laterally connected to or disconnected from another screen or the like.

The perspective view which shows the screen system which concerns on the 1st Embodiment of this invention. The front view which shows the screen system which concerns on the same embodiment. FIG. 3 is an exploded perspective view showing one screen according to the same embodiment. FIG. 3 is an enlarged sectional view of a main part taken along the line AA in FIG. 2. The disassembled perspective view which shows the screen main body of one screen which concerns on the same embodiment. The C section enlarged view in FIG. The D section enlarged view in FIG. The X section enlarged view in FIG. The disassembled perspective view which shows the screen main body of the other screen which concerns on the same embodiment. The perspective view which shows the screen which concerns on the 2nd Embodiment of this invention. FIG. 3 is an explanatory view of a mounting manner of the magnet and the magnet holder according to the same embodiment. The perspective view which shows the screen which concerns on the 3rd Embodiment of this invention. FIG. 3 is an explanatory view of a mounting manner of the magnet and the magnet holder according to the same embodiment.

<< First Embodiment >> (FIGS. 1 to 9)
A first embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a screen system SS formed by connecting two screens S1.

  As shown in FIGS. 1 and 2, this screen system SS is provided with two screens S1 and S2 each having a magnet M on a side edge thereof, and these screens S1 and S2 are connected to each other by a magnetic force of the magnet M. The respective screens S1 and S2 have a basic magnet M at a common height position H at least at the side edge portions.

<One screen S1>
One of the screens S1 is a straight type which has a linear shape in a plan view, and as shown in FIGS. 1 to 4, a frame-shaped screen body 1 and a pair arranged on both surfaces of the screen body 1. It is provided with outer cover materials 2A and 2B. As shown in FIG. 8, each of the covering materials 2A and 2B is provided with a light-transmissive portion 2x that hardly transmits light and a light-transmissive portion 2y that easily transmits light, which are randomly mixed. That is, as shown in FIG. 3 and FIG. 4, the screen main body 1 is provided with a hollow area CA inside the frames 3 to 6 arranged in a frame shape, and both the facing materials 2A and 2B have the hollow spaces. It is attached to the frames 3 to 6 so as to cover the area CA. Then, as shown in FIGS. 1 to 4, in each of the facing materials 2A and 2B, the portion 21 corresponding to the frames 3 to 6 is formed of the light-transmissive portion 2x, and the portion 22 corresponding to the cavity region CA is light-transmissive. The light portion 2x and the light transmitting portion 2y are randomly mixed and arranged. The details will be described below.

  As shown in FIGS. 1 to 3 and 5, the screen main body 1 includes right and left frames 3 and 4, an upper frame 5 that connects upper ends of the right and left frames 3 and 4, and a right frame. , A lower frame 6 for connecting the lower ends of the left frames 3 and 4 to each other, and the lower frame 6 is provided with a pair of right and left legs 62 as a grounding body. There is. Each of the frames 3 to 6 is made of a pipe material having a circular cross section, and is specifically made of an aluminum pipe material which is a non-magnetic material. The right and left frames 3 and 4 have an upright posture, and are provided with screw insertion holes 3x, 4x, 3y, and 4y on the cavity region CA side near the upper ends 3a, 4a and lower ends 3b, 4b, respectively. ing. The upper frame 5 has a horizontal posture, and has hanging parts 51 extending downward at both right and left ends, and the screws are respectively inserted in the vicinity of the lower ends 51a of the hanging parts 51 on the cavity area CA side. A hole 51x is provided. The lower frame 6 has a horizontal posture, and has rising portions 61 extending upward at both right and left ends, and screws are respectively inserted into the hollow area CA side in the vicinity of the upper ends 61a of both rising portions 61. A hole 61x is provided.

  Then, as shown in FIGS. 5 to 7, the upper ends 3a and 4a of the right and left frames 3 and 4 and the lower end 51a of the hanging portion 51 of the upper frame 5 are connected by the upper frame connecting member 7A, As shown in FIG. 5, the lower ends 3b and 4b of the right and left frames 3 and 4 and the upper end 61a of the standing portion 61 of the lower frame 6 are connected by the lower frame connecting member 7B. As shown in FIGS. 5 to 7, in the upper frame connecting member 7A, the lower half is fitted to the upper ends of the right and left frames 3 and 4, and the upper half is upward. It is a rod-shaped member that fits into the lower end of the hanging portion 51 of the frame 5, and is made of a synthetic resin that is a non-magnetic material. Female screw holes 71 corresponding to the screw insertion holes 3x and 4x of the right and left frames 3 and 4 are formed in the lower half of the upper frame connecting member 7A. A female screw hole 71 corresponding to the screw insertion hole 51x provided in the hanging portion 51 of the upper frame is formed in the portion. Then, the screws v for connection are screwed into the corresponding female screw holes 71 from the screw insertion holes 3x, 4x, 51x respectively and tightened, whereby the right and left frames 3 and 4 and the upper frame 5 are rigidly connected. It is supposed to be done. Reference numeral 73 is a positioning protrusion for positioning the upper frame connecting member 7A on the frames 3 and 4 during assembly.

  Here, the screen S1 has side edges S1a, that is, outer halves of the right and left frames 3 and 4 made of a pipe material having a circular cross section, having a convex curved surface that is smoothly continuous on the front and back surfaces, A magnet holder 72 made of a non-magnetic material and a connecting magnet M held by the magnet holder are provided, and the magnet holder 72 holding the magnet M constitutes a side edge portion S1a of the screen S1. The right and left frames 3 and 4 are attached while maintaining the convex curved surface of the side edge S1a of the screen S1. Hereinafter, a mounting mode of the magnet holder 72 will be described.

  That is, in this embodiment, the magnet holders 72 extending into the corresponding right and left frames 3 and 4 are formed at the lower ends of the upper and lower frame connecting members 7A forming a pair of right and left, respectively. A magnet accommodating chamber 72s for accommodating the reference magnet M is formed between the inner surface (more specifically, the inner peripheral surface 721a of the holder body 721 described later) and the inner peripheral surfaces 3s and 4s of the frame. On the other hand, the lower frame connecting member 7B is obtained by vertically inverting the upper frame connecting member 7A described above, and the same or corresponding parts will be denoted by the same reference numerals and description thereof will be omitted. Thus, the lower magnet M is disposed between the inner surface of the magnet holder 72 of the lower frame connecting member 7B (more specifically, the inner peripheral surface 721a of the holder body 721 described later) and the inner peripheral surfaces 3s and 4s of the frame. 72 s for accommodating the magnet is formed.

  Here, a mounting structure of the magnet M will be described in relation to the magnet housing chamber 72s. As shown in FIGS. 4 to 7, this screen S1 is provided with a magnet accommodating chamber 72s at an edge portion to which another screen S2 is to be coupled, and the coupling magnet M is movably accommodated in the magnet accommodating chamber 72s. It will be done. At least a part of the inner wall surface of the magnet accommodating chamber 72s forms an arcuate surface R, and the magnet M accommodated in the magnet accommodating chamber 72s causes the two adjacent corner portions Ma and Ma to come into line contact with the arcuate surface R at the same time. It has a prismatic shape. The magnet M of this embodiment is a quadrangular prism having four corners Ma, and the portion located between a pair of adjacent corners Ma (n) and Ma (n) is the N pole, and the other is adjacent. The portion located between the pair of corner portions Ma (s) and Ma (s) is magnetized so as to have an S pole. The lower magnet M is the same as the basic magnet M, and the corners Ma (n) and Ma (n) of the two magnets M have an arcuate surface R in line contact with each other within the common frame 4. Since it is a part of the peripheral surface 4s, detailed illustration and description thereof will be omitted.

If the above description is explained according to the claims, the screen S1 is provided with a magnet accommodating chamber 72s at the edge portion thereof, and the magnet M for connection described above is allowed to float in the magnet accommodating chamber 72s. The magnet housing chamber 72s has a circular arc surface R inside, and the magnet M is a quadrangular prism that allows two adjacent corner portions Ma to come into line contact with the circular arc surface R at the same time. belongs to. More specifically, the screen S1 has a plurality of frames 3, 4, 5, and 6 connected in a frame shape, and the magnet housing chamber 72s is provided in each of the frames 3 and 4. Then, the upper frame connecting member 7A internally fitted to both butted frames 3 and 5, 4 and 5 and the lower frame connecting member 7B internally fitted to both butted frames 3, 6, 4 and 6 are provided. The magnet accommodating chamber 72s is formed by utilizing these frame connecting members 7A and 7B. The frames 3, 4, 5 and 6 are made of a pipe material made of a non-magnetic material having a circular cross section, and at least a part of the inner peripheral surfaces 3s and 4s of the frames 3 and 4 are circular arcs described above. It is used as the surface R. The frame connecting members 7A and 7B are made of a non-magnetic material, and have a magnet holder 72 extending into one of the frames 3 and 4 at one end thereof. The inner surface 721a of the magnet holder 72 and the one The magnet accommodating chambers 72s are formed between the inner peripheral surfaces 3s and 4s of the frames 3 and 4, respectively, and at least a part of the inner peripheral surfaces 3s and 4s of the frames 3 and 4 is used as an arc surface R. There is. Specifically, the inner peripheral surfaces 3s, 4s of the outer halves of the respective frames 3, 4 are arcuate surfaces R where two adjacent corners Ma of the magnet M are in line contact with each other. The upper frame connecting member 7A for connecting the frames 3 and 5 and the upper frame connecting member 7A for connecting the frames 4 and 5 respectively extend the magnet holder 72 from the lower end surface toward the inside of the frames 3 and 4. The frame connecting member 7A and the corresponding magnet holder 72 are integrally formed of synthetic resin. Further, the lower frame connecting member 7B connecting the frames 3 and 6 and the lower frame connecting member 7B connecting the frames 4 and 6 respectively extend the magnet holder 72 from the upper end surface thereof into the frames 3 and 4. The frame connecting member 7B and the corresponding magnet holder 72 are integrally formed of synthetic resin. Thus, in the case of this embodiment, the frame connecting member 7A and the frame connecting member 7B are obtained by vertically inverting an integrally molded component made by a common mold.
To explain the structure described above from a different point of view, the screen S1 includes a magnet holder 72 made of a non-magnetic material and a coupling magnet M held by the magnet holder 72, and holds the magnet M. The magnet holder 72 is attached to the edge of the screen body 1. More specifically, the screen body 1 has a frame structure mainly composed of the frames 3 to 6, and the magnet holders 72 are provided on the right and left frames 3 and 4 forming the edge of the screen body 1. It is charged with the magnet M. Specifically, the magnet holder 72 is a partial cylinder that projects from the end faces of the frame connecting members 7A and 7B and is in contact with a part of the inner peripheral surfaces 3s and 4s of the frames 3 and 4 (one half on the inner side). A holder main body 721 having a body shape, and an end plate portion 722 provided at a projecting end of the holder main body 721 to regulate the vertical movement of the magnet M in cooperation with the frame connecting members 7A and 7B, are composed. It is integrally molded with resin together with the frame connecting members 7A and 7B. Thus, the magnet accommodating chamber 72s includes a part of the inner peripheral surfaces 3s and 4s of the frames 3 and 4 (partial half on the outer side) of the frames 3 and 4 having a partial arc shape, and a holder facing the inner peripheral surfaces 3s and 4s. It is formed between the inner peripheral surface 721a of the main body 721 and the upper and lower ends of the magnet housing chamber 72s are closed by the frame connecting members 7A and 7B and the end plate 722 of the magnet holder 72.

  The covering materials 2A and 2B mounted on the screen body 1 described above will be described below. The front cover material 2A stretched on one surface side of the screen body 1 and the back cover material 2B stretched on the other surface side are continuously formed outside the frames 3 to 6 so as to form a bag shape as a whole. There is. That is, for example, the front cover material 2A on the front side and the back cover material 2B on the back side are knitted as a bag-like knitted fabric in which an upper edge and left and right side edges are connected to each other, and the screen body 1 is covered from above to connect the lower edges. As a result, it is attached to the outside of the frames 3 to 6. The covering materials 2A and 2B of this embodiment are knits made using the thread material 2s, and the light-transmissive portion 2x has a stitch-like structure in which the thread material 2s is relatively densely knitted. At the same time, the translucent portion 2y has a hole-like shape in which the thread material 2s does not exist. FIG. 8 is an enlarged view of only the table covering material 2A existing in the region X in FIG. That is, the front cover material 2A has a large number of hole-shaped light-transmitting portions 2y randomly scattered between the continuous light-transmitting portions 2x forming a stitch structure. The back cover material 2B also has a structure similar to that of the front cover material 2A, and both give the same impression when viewed from a distance, but the transparent portion 2y is randomly arranged with respect to the difficult transparent portion 2x. Since they are arranged, the front and back cover materials 2A and 2B have completely different pattern shapes when finely and accurately compared. It should be noted that the front surface mounting material 2A has the above-described configuration, and the back surface mounting material 2B has a configuration in which the front surface mounting material having the same random pattern as the front surface mounting material 2A is reversed. Good.

<The other screen S2>
The other screen S2 is of an L-shaped type having an L shape in a plan view, and includes a frame-shaped screen body 1 and a pair of facing materials 2A and 2B arranged on both surfaces of the screen body 1. I will do it.

  The screen body 1 has a configuration in which the upper frame 5 and the lower frame 6 are bent at a right angle in the center, and an adjuster 63 which is a grounding body is provided below the lower frame 6 in place of the leg body 62. Is different from the one screen S1 in that the weight plate 64 is provided on the lower surface side of the bent portion of the lower frame 6, and is basically configured in the same way as the one screen S1. ing. Similarly to the case of the one screen S1, the front and back surface covering materials 2A and 2B are knitted in a bag shape and covered on the frame main body, and the lower edges of the front and back surface covering materials 2A and 2B are attached to the lower frame. It is attached to the frame body by connecting on the bottom side. Therefore, the same or corresponding portions as those of the one screen S1 are designated by the same reference numerals and the description thereof will be omitted.

  The grounding bodies of both screens S1 and S2 are of different types, but their supporting heights are the same. That is, at least the height positions H of the basic magnets M of the both screens S1 and S2 are set to be the same (the separation distance between the floor surface F and each magnet M is the same). In the present embodiment, the lower separation distance Z, which is the distance between the basic magnet M and the lower magnet M on both screens S1 and S2, is also set to be the same.

  Also, this screen S2 also has side edges S2a, that is, outer half portions of the right and left frames 3 and 4 made of a pipe material having a circular cross section, having a convex curved surface that is smoothly continuous on both front and back surfaces, A magnet holder 72 made of a magnetic material and a connecting magnet M held by the magnet holder are provided, and the magnet holder 71 holding the magnet M forms the right side edge S2a of the screen S2. , Is mounted in the left frames 3 and 4 while maintaining the convex curved surface of the side edge portion S2a of the screen S2. Since the attachment mode of the magnet holder 72 is the same as that of the screen S1 described above, the same or corresponding portions are designated by the same reference numerals and the description thereof will be omitted.

<Operation and effect of the first embodiment>
With such a configuration, since the magnets M are set in the side edge portions S1a and S2a of the screens S1 and S2, both screens S1 and S2 are used by laterally connecting them by the magnetic force of the magnet M. If the horizontal connection is no longer necessary, it is sufficient to separate the screens S1 and S2 from each other against the magnetic force of the magnet M. Therefore, the screens S1 and S2 can be attached to and detached from each other without attaching or detaching special connecting parts.

  The magnet M is movably accommodated in a magnet accommodating chamber 72s formed at the side edge portions of the screens S1 and S2, and an arc surface R with which the magnet M is in contact is formed inside the magnet accommodating chamber 72s. Therefore, the magnet M can freely change its direction, and the screens S1 and S2 can be connected to each other at a relatively free angle.

  Moreover, since the magnet M is a quadrangular prism that allows two adjacent corner portions Ma, Ma to simultaneously come into line contact with the arc surface R of the magnet housing chamber 72s, the screens S1, S2 are laterally connected in a stable state. can do.

  That is, in the field of toys and the like, there has been developed one in which a magnet is embedded movably in the edge of a building block and a plurality of pieces are connected by the magnetic force of the magnet to play. Stable connection is difficult only by applying the configuration to the screen. Specifically, in such a toy, a magnet accommodating chamber having a circular cross section is formed in the edge portion of the piece, and the magnet accommodating chamber has a columnar shape having an outer diameter smaller than the inner diameter of the magnet accommodating chamber. Although the magnet is movably accommodated, such a magnet comes into line contact with the inner peripheral surface of the arc-shaped magnet accommodating chamber at one location when connected. Therefore, the magnet easily vibrates like a head swinging around one line contact portion as an axis. Therefore, if such a structure is used for the screen, it is difficult to stably connect the screens to each other. For example, when the screen shakes, the magnet vibrates and the magnetic force becomes unstable. There is a risk of causing problems such as repeated collisions with the inner peripheral surface of the vehicle and abnormal noise.

On the other hand, in the present embodiment, when the screens S1 and S2 are laterally connected to each other, as shown in FIG. 4, two adjacent corner portions Ma (n), Ma (n) of the magnet M, or Two adjacent corner portions Ma (s) and Ma (s) are in line contact with the arcuate surface R of the magnet housing chamber 72s. Therefore, each of the magnets M attracts each other by using the two line contact portions as scaffolds. As a result, it is unlikely that the magnet M makes a swinging motion about the line contact portion as an axis, and in particular, the distance between the two line contact portions as in the present embodiment is comparable to the substantially full width dimension of the magnet M. The vibrations of the magnet M can be almost surely suppressed if they are separated from each other. Therefore, even if the screens S1 and S2 sway due to human contact or the like, the magnet M itself does not oscillate, and the magnetic force becomes unstable or the magnet M becomes an inner peripheral surface of the frames 3 and 4. There is no problem such as collision with 3s or 4s and generation of abnormal noise.
<< Second Embodiment >> (FIGS. 10 to 11)
A second embodiment of the present invention will be described with reference to FIGS. The parts corresponding to those in the first embodiment described above are designated by the same names and reference numerals, and detailed description thereof will be omitted.

  The screen S3 of this embodiment is provided with a magnet accommodating chamber 72s at the edge S3a, and the coupling magnet M is movably accommodated in the magnet accommodating chamber 72s. The magnet accommodating chamber 72s has an arcuate surface R inside, and the magnet M is a quadrangular prism that allows two adjacent corner portions Ma and Ma to be in line contact with the arcuate surface R at the same time. That is, in the screen S3 of this embodiment, the magnet holder B72 having the magnet housing chamber 72s formed inside the peripheral wall B720 is attached to the edge S3a, and at least a part of the inner surface of the peripheral wall B720 is described above. It is defined as a curved surface R. Specifically, the inner surface of the outer wall portion B721 of the peripheral wall B720 is an arc surface R with which the corner portions Ma and Ma of the magnet M make line contact.

  More specifically, as shown in FIG. 10, the screen S3 of this embodiment is provided with the screen body 1 having a frame structure similar to that of the first embodiment, and the side edge S3a of the screen S3 is provided. Magnet holders B72 are set in the right and left frames 3 and 4 of the screen body 1 to be formed together with the magnets M. In this embodiment, the right frame 3 is formed by connecting the upper half portion 31 and the lower half portion 32 via a frame connecting member or the like (not shown), and the upper half portion 31 is connected to the upper frame 5. The lower half portions 32 are integrally provided on the lower frame 6, respectively. The left frame 4 is also formed by connecting the upper half portion 41 and the lower half portion 42 via a frame connecting member or the like (not shown). The upper half portion 41 is connected to the upper frame 5 and the lower half portion 42. Are integrally provided on the lower frame 6, respectively.

  In the above-described first embodiment, the magnet holder is integrally provided on the frame connecting member, but the screen S2 of the second embodiment has the frames 3, 4 as shown in FIG. Holes 3n and 4n are formed at predetermined positions, and a box-shaped magnet holder B72 is fitted in the holes 3n and 4n while holding the magnet M. The holes 3n and 4n formed in the frames 3 and 4 have, for example, a rectangular shape and are opened outward. The magnet holder B72 is in the shape of a box with a bottom having a peripheral wall B720, and has a size and shape that allows it to be fitted into the holes 3n and 4n of the frames 3 and 4 from the outside. As shown in FIG. 11, the magnet holder B72 has a shape in which an outer wall portion B721 of a peripheral wall B720 is curved in a partial arc shape having the same diameter as the frames 3 and 4, and the magnet holder B72 is fitted to the frames 3 and 4. In the attached state, the outer surface of the magnet holder B72, that is, the outer surface B72a of the outer wall portion B721 is flush with the outer peripheral surfaces 3t, 4t of the frames 3, 4. B723 is a retaining ridge provided on the outer surface of both side wall portions B722 of the magnet holder B72. The ridge B723 is inserted into the frames 3 and 4 by utilizing the temporary elastic deformation of the member. Although FIG. 11 shows only the mounting structure of the magnet holder B72 holding the basic magnet M to the left frame 4, the mounting of the magnet holder B72 holding the basic magnet M to the right frame 3 is shown. The structure is bilaterally symmetrical to that shown in FIG. Further, the mounting structure of the magnet holder B72 holding the lower magnet M on the right and left frames 3 is completely the same as the mounting structure of the magnet holder B72 holding the basic magnet M.

  Also in the case of this embodiment, since the frames 3 to 6 assembled in a frame shape are wrapped by the front and back cover materials 2A and 2B as in the first embodiment, the side edge S3a of the screen S3 is The front and back surfaces have a smoothly continuous convex curved surface, and the convex curved surface shape of the side edge portion S3a is maintained even when the magnet holder B72 is mounted on the frames 3 and 4.

  With such a configuration, the screens S3 can be laterally connected to each other in a detachable manner by the magnetic force of the magnet M. The magnet M is movably accommodated in a magnet accommodating chamber 72s formed at the side edge of the screen S3, and an arc surface R with which the magnet M is in contact is formed inside the magnet accommodating chamber 72s. Therefore, the magnet M can freely change its direction, and the screens S3 can be connected to each other at a relatively free angle.

  Moreover, since the magnet M is a quadrangular prism that allows two adjacent corners Ma, Ma to be in line contact with the arc surface R of the magnet housing chamber 72s at the same time, the screen S3 is the same as that of the first embodiment. The two can be laterally connected in a stable state.

In the case of the second embodiment, it is essential that the magnet holder is made of a non-magnetic material such as resin, but it is not essential that the frame is made of a non-magnetic material such as aluminum. It can also be applied to a frame made of magnetic material such as iron.
<< Third Embodiment >> (FIGS. 12 to 13)
A third embodiment of the present invention will be described with reference to FIGS. The parts corresponding to those in the first embodiment described above are designated by the same names and reference numerals, and detailed description thereof will be omitted.

  The screen S4 of this embodiment is provided with a magnet accommodating chamber 72a at the edge S4a, and the magnet M for connection is movably accommodated in the magnet accommodating chamber 72a. The magnet accommodating chamber 72a has an arcuate surface R inside, and the magnet M is a quadrangular prism that allows two adjacent corner portions Ma and Ma to come into line contact with the arcuate surface R at the same time. That is, in the screen S4 of this embodiment, the magnet holder C72 having the magnet housing chamber 72s formed inside the peripheral wall C721 is attached to the edge portion S4a, and at least a part of the inner surface of the peripheral wall C721 is described above. It is defined as a curved surface R.

  More specifically, the screen S4 of this embodiment is provided with a screen body C1 having a panel structure, as shown in FIG. That is, the screen body C1 is mainly composed of the panel C2, and the non-magnetic magnet holder C72 is fitted together with the magnet M in the recess C2x formed in the edge C2a of the panel C2. . As shown in FIG. 13, in the panel C2, for example, the edge portion C2a has a convex curved surface with a semi-circular cross section, and the recessed portion C2x is formed by cutting off a part of the edge portion of the panel C2. . The magnet holder C72 has a bottomed box shape having a peripheral wall C721 and has a cross-sectional shape that matches the cross-sectional shape of the recess C2x. Therefore, the outer surface C72a of the peripheral wall C721 of the magnet holder C72 and the outer surface C2b of the edge C2a of the panel C2 are flush with each other, and a semi-arcuate arc surface R is formed on the inner surface side. . The screen S4 of this embodiment also has a side edge S4a having a convex curved surface continuous with the front and back surfaces S4b and S4b, and even when the magnet holder C72 is mounted on the panel C2. The convex curved surface shape of the portion S4a is maintained. Although only the mounting structure of the magnet holder C72 holding the basic magnet M is shown in FIG. 13, the mounting structure of the magnet holder C72 holding the lower M is exactly the same.

  With such a configuration, the screens S4 can be laterally connected to each other in a detachable manner by the magnetic force of the magnet M. The magnet M is movably accommodated in a magnet accommodating chamber 72s formed at the side edge of the screen S4, and an arc surface R with which the magnet M is in contact is formed inside the magnet accommodating chamber 72s. Therefore, the magnet M can freely change its direction, and the screens S3 can be connected to each other at a relatively free angle.

  Moreover, since the magnet M is a quadrangular prism that allows two adjacent corners Ma, Ma to be in line contact with the arc surface R of the magnet housing chamber 72s at the same time, the screen S3 is the same as that of the first embodiment. The two can be laterally connected in a stable state.

<< Other Embodiments >>
The present invention is not limited to the embodiments described above.

  In each of the above-described embodiments, the case where the magnet is held in the magnet holder and charged into the screen body has been described. However, a cavity is formed in the screen body, and the square pole-shaped magnet is directly movably accommodated in the cavity. You may. In this case, part or all of the inner peripheral surface of the cavity may be an arc surface with which two adjacent corners of the magnet make line contact.

  Further, the magnet may be of any type as long as the distance between the two corners that make line contact with the arc surface is close to the full width dimension of the magnet. In the embodiment described above, all the corners are rounded. However, various modifications are possible without departing from the spirit of the present invention, such as a rectangular column in a narrow sense with sharp corners. Is.

S1 to S4 ... Screen S1a to S4a ... Side edge of screen 1, C1 ... Screen body 3-6 ... Frame 3s ... Inner peripheral surface 4s ... Inner peripheral surface 7A, 7B ... Frame connecting member C2 ... Panel C2x ... Recessed portion 72 , B72, C72 ... Magnet holder 72s ... Magnet accommodating chamber D2 ... Surface material M ... Magnet Ma ... Corner Ma (n) ... A pair of corners on the N pole side Ma (s) ... A pair of corners on the S pole side R … Arc surface

Claims (8)

A magnet accommodating chamber is provided at an edge portion, and a magnet for connection is movably accommodated in the magnet accommodating chamber,
A screen, wherein the magnet housing chamber has an arcuate surface inside, and the magnet is a quadrangular prism capable of simultaneously making line contact with two adjacent corners of the arcuate surface. The magnet is magnetized such that a portion located between a pair of adjacent corners has an N pole and a portion of the other adjacent pair located between the corners has an S pole. Screen shown. The screen according to claim 1, comprising a plurality of frames connected in a frame shape, and the magnet accommodating chamber being provided in the frame. The screen according to claim 3, further comprising a frame connecting member that is fitted into both of the abutted frames, and the magnet accommodating chamber is formed by using the frame connecting member. 5. The frame according to claim 3 or 4, wherein the frame is made of a non-magnetic pipe material having a circular cross section, and at least a part of an inner peripheral surface of the frame is used as the arc surface. screen. The frame connecting member is made of a non-magnetic material, and has a magnet holder at one end thereof extending into one frame, and between the inner surface of the magnet holder and the inner peripheral surface of the one frame. The screen according to claim 5, wherein the magnet accommodating chamber is formed in the inner surface of the frame, and at least a part of an inner peripheral surface of the frame is used as the arc surface. The screen according to claim 6, wherein the frame connecting member and the magnet holder are integrally molded of resin. The screen according to claim 1 or 2, wherein a magnet holder having the magnet accommodating chamber formed inside the peripheral wall is attached to an edge portion, and at least a part of an inner surface of the peripheral wall is the arc surface.

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