JP7436799B2 - shielding structure - Google Patents

Description

The present invention relates to a shielding structure, and more particularly, to a technique for improving the airtightness of the lower end of a shielding structure in which an opening can be shielded by moving the shielding object up and down.

Hitherto, a shielding structure (sheet-like door) is known in which a sheet is wound around a horizontally extending roller, and an opening is opened and closed by winding or feeding out the sheet by rotation of the roller (for example, (See Patent Document 1). Patent Document 1 describes a shielding structure in which a bag-like member is provided at the lower end of a sheet, and the bag-like member comes into contact with a floor surface to ensure airtightness.

Japanese Patent Application Publication No. 2012-117345

In the shielding structure configured as in the above-mentioned patent document, if one part of the lower end of the sheet is damaged, the airtightness of the sheet-like door will be significantly impaired. Therefore, it is necessary to take measures such as increasing the contact area between the sheet and the floor surface so that the airtightness is not compromised even if a portion of the sheet is damaged. However, when configured in this way, there is a problem that the device configuration becomes large-scale and the entire seat becomes heavy.

The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to provide a shielding structure that can ensure high airtightness with a simple configuration.

In order to solve the above problems, the present invention provides a shielding structure configured as follows.

(1) A shielding structure comprising a shield that can be raised and lowered to cover an opening, and a contact member that is provided such that a lower end of the shield can come into contact with the lower end of the shield. The department has
A cylindrical part is formed by folding back the membrane member, a groove-like part is formed on the upper surface of the abutting member into which the lower side of the cylindrical part is inserted, and the cylindrical part is connected to the shielding object. When the lower end comes into contact with the abutment member, a plurality of tangent lines with the groove-shaped part are formed , and inside the cylindrical part, there is an elastic member that elastically deforms in response to a tensile force in the vertical direction. A shielding structure is provided .

(2) The shield is a rectangular sheet whose upper end is connected to the rotating shaft of a horizontally stretched roller, is wound around the roller, and whose lower end is suspended, and the lower end of the sheet is The shielding structure according to (1), wherein the cylindrical portion is formed by folding back the membrane member.

(3) The groove-shaped part is composed of a bottom surface and two side surfaces continuous with the bottom surface,
The cylindrical portion is deformed so as to be widened in the thickness direction of the shield when the lower end of the shield comes into contact with the abutment member, and the cylindrical portion deforms so as to widen in the thickness direction of the shield, and the bottom surface and the two side surfaces of the groove-shaped portion The shielding structure according to (1) or (2), in which tangents are formed with each of the above.

(4) The shielding structure according to any one of (1) to (3), wherein a weight member is provided at a lower bottom inside the cylindrical portion.

(5) The shielding structure according to (4), wherein the weight member is a rod-shaped member.

(6) The weight member is fixed to the lower bottom part of the cylindrical part, and the elastic member is provided between the upper base part and the weight member inside the cylindrical part, (4) or ( 5) The shielding structure described in 5).

The above-mentioned shielding structure according to the present invention has the following effects.

According to the configuration (1), since the cylindrical part and the groove part can be closed off at the lower end of the shield by a plurality of tangents, the airtightness of the shield structure in the closed state can be ensured with a simple configuration. becomes possible.

According to the configuration (2), it is possible to ensure the airtightness of the sheet-like door in the closed state with a simple configuration at the lower end of the sheet that is the shielding object.

According to the configuration (3), since the lower end of the shield can be closed by three tangents between the cylindrical part and the bottom and two side surfaces of the groove, the closed state can be achieved with a simple configuration. This makes it possible to ensure high airtightness in the shielding structure.

According to the configuration (4), since the cylindrical portion can be brought into contact with the grooved portion using the weight of the weight member, it is possible to ensure high airtightness.

According to the configuration (5), the weight of the rod-shaped member can be used to bring the cylindrical part into contact with the groove-shaped part uniformly along the longitudinal direction, so that higher airtightness can be ensured. It becomes possible.

According to the configuration (6), the shape of the cylindrical part is stabilized to enable stable contact between the cylindrical part and the groove part, and the elastic force of the elastic member is used to make the cylindrical part and the groove Since the tangent line to the shaped portion can be stably formed, it is possible to ensure even higher airtightness.

FIG. 1 is a perspective view showing a sheet-like door according to an embodiment of a shielding structure. A side sectional view of a sheet-like door. (a) and (b) are side sectional views of the cylindrical part when the sheet-like door is opened and when it is shielded. FIG. 7 is a side cross-sectional view of a cylindrical portion of a sheet-like door according to another example when shielding.

A sheet-like door (hereinafter simply referred to as "door") 10, which is an embodiment of a shielding structure according to the present invention, will be described below with reference to FIGS. 1 to 3. The door 10 according to the present embodiment is constructed by raising and lowering a sheet 12, which is an embodiment of a shield in a shielding structure, as shown by the dashed-dotted line arrow in FIG. The opening between the pillars P and P is configured to be shieldable. Note that the shielding structure according to the present invention is not limited to the door 10 that raises and lowers the sheet 12 as a shield as in this embodiment. That is, as long as it moves up and down to cover the opening, other structures such as partitions, shutters, etc. can be used as the shield.

As shown in FIG. 1, the door 10 includes a roller 11, a sheet 12, a contact member 13, a guide rail 14, a guide roller 15, a rod 16, a tension spring 17, a motor M, and the like as constituent members. Each component will be explained below.

The roller 11 is provided horizontally across the upper ends of the pair of pillars P and P. As shown in FIGS. 1 and 2, the roller 11 is composed of a main roller 11m and a sub roller 11s that are arranged parallel to each other. The respective rollers 11m and 11s are housed inside a casing B shown by imaginary lines in FIG. 1, and are rotatably supported in the casing B. The rotation shaft 11a of the main roller 11m is connected to an electric motor M disposed adjacent to the housing B, and the main roller 11m is rotated by the drive of the motor M. Note that the driving force of the main roller 11m is not limited to electric power, and it is also possible to configure the main roller 11m to be rotated by other power or manually.

As shown in FIG. 2, the upper end of the sheet 12 is connected to the rotating shaft 11a of the main roller 11m. The sheet 12 is a rectangular membrane member made of cloth or resin, and is wound around the main roller 11m. The sheet 12 is wound up or fed out by driving the motor M and rotating the main roller 11m. The lower end of the sheet 12 is suspended downward via the upper side of the sub roller 11s. In the door 10, the opening is opened or closed by moving the sheet 12 up and down between the pillars P and P.

As shown in FIGS. 2 and 3, a cylindrical portion 12p is formed at the lower end of the sheet 12 by folding the sheet 12 back. Inside the cylindrical portion 12p, a rod 16, which is a weight member, is fixed to the lower bottom portion by adhesive. The rod 16 is a rod-shaped member arranged parallel to the rotation axis 11a of the main roller 11m.

As described above, in this embodiment, by employing the same material for the sheet 12 and the cylindrical part 12p, which are the shields, the shield and the cylindrical part are formed continuously and integrally, and the door 10 The configuration is simplified. Note that even if a configuration other than the door 10 according to this embodiment is adopted as a shielding structure (for example, a configuration using a partition or a shutter as a shielding object), the sheet 12 according to this embodiment is attached to the lower end of the shielding object that moves up and down. It is possible to form a cylindrical portion by providing a film-like member similar to the above and folding back this film-like member.

A plurality of (five in this embodiment) tensile members are provided between the upper bottom part and the rod 16 inside the cylindrical part 12p as elastic members that are elastically deformed in the extension direction in response to the tensile force in the vertical direction. A spring 17 is provided. As shown in FIG. 3, the upper end portion of the tension spring 17 is locked to the upper bottom portion of the cylindrical portion 12p by a hook portion 17a. Further, the lower end portion of the tension spring 17 is engaged with an engaging portion 16a formed on the upper surface of the rod 16. The weight of the rod 16 is configured to be greater than the load with which the tension spring 17 can be stretched. That is, due to the weight of the rod 16, the tension spring 17 is expanded as shown in FIG. 3(a). Note that it is also possible to employ a stretchable resin material or the like as the elastic material.

Note that the door 10 according to the present embodiment has a structure in which the rod 16, which is a weight member, and the tension spring 17, which is an elastic member, are arranged inside the cylindrical part 12p. It is also possible to make it hollow. Alternatively, the weight member may not be the rod 16, but may be a plurality of spherical weight members arranged along the longitudinal direction of the cylindrical portion 12p. Further, it is also possible to dispose only a weight member without providing an elastic member inside the cylindrical portion 12p.

On the floor surface F below the sub-roller 11s, an abutting member 13 is arranged along between the pillars P and P. Since the sheet 12 is suspended downward from the sub-roller 11s, when the sheet 12 is sent out from the roller 11, the lower end of the sheet 12 can come into contact with the contact member 13. Note that the floor surface F on which the abutment member 13 is arranged can also be the upper surface of an upright plate-like member. For example, it is also possible to provide the door 10 in an opening, such as a window, in the middle of a wall in the vertical direction, and to arrange the contact member 13 with the lower surface of the opening as the floor surface F.

In the door 10, a pair of guide rails 14 are provided along the vertical direction on mutually opposing surfaces of the pillars P and P. That is, the pair of guide rails 14 are erected on the floor F with the contact member 13 in between. Further, guide rollers 15, 15 are provided near the lower end of the sheet 12 and extend to both sides, and are inserted into the guide rails 14, 14. As a result, the guide rollers 15,15 roll inside the guide rails 14,14, so that the lower end portion of the sheet 12 can be displaced along the guide rails 14,14.

As shown in FIGS. 2 and 3, a groove portion 13g is formed on the upper surface of the abutment member 13, into which the lower side of the cylindrical portion 12p is inserted. The groove-shaped portion 13g in this embodiment is composed of a bottom surface 13b and two side surfaces 13s, 13s continuous to the bottom surface 13b. Moreover, the width dimension of the grooved portion 13g (width dimension of the bottom surface 13b) is larger than the thickness dimension of the cylindrical portion 12p in the natural state (state where no external force is applied), as shown in FIG. 3(a). It is also slightly larger.

In addition, in this embodiment, the groove-like part 13g is formed in a shape in which the bottom surface 13b and the side surfaces 13s and 13s are perpendicular to each other, but it is also possible to form the side surfaces 13s and 13s to be inclined with respect to the bottom surface 13b. be. At this time, the interval between the side surfaces 13s and 13s may be formed so that the upper side of the side surfaces 13s and 13s is wider, or conversely, it may be formed so that it is narrower.

When the seat 12 is lowered by the drive of the motor M, the lower end of the cylindrical part 12p, which is the lower end of the seat 12, is inserted into the groove part 13g as shown in FIG. 3(a). In this embodiment, as described above, the cylindrical portion 12p is configured to slide between the guide rails 14. This allows the cylindrical portion 12p formed at the lower end of the sheet 12 to be guided to the abutment member 13, and the lower side of the cylindrical portion 12p to be reliably inserted into the groove portion 13g.

When the lower end of the sheet 12 comes into contact with the inner surface of the groove 13g of the abutting member 13, a plurality of tangents are formed between the cylindrical portion 12p and the groove 13g. Specifically, as shown in FIG. 3(b), when the lower end of the sheet 12 comes into contact with the bottom surface 13b of the grooved portion 13g, the cylindrical portion 12p is moved in the thickness direction of the sheet 12 ( It is deformed so as to be widened in the horizontal direction (in the left-right direction in FIG. 3(b)). Then, a tangent L1 with the bottom surface 13b of the groove-shaped portion 13g and tangents L2 and L3 with the two side surfaces 13s and 13s are formed.

As described above, in the door 10 according to the present embodiment, airtightness is ensured by a plurality of (three in this embodiment) tangent lines L1 to L3, so that the cylindrical portion 12p is secured at the lower end of the sheet 12. Alternatively, even if one part of the contact member 13 is damaged, the airtightness of the door 10 will not be impaired. In particular, in this embodiment, the three tangent lines L1 to L3 make it possible to ensure high airtightness.

Moreover, when the door 10 is compared with a conventional sheet-shaped door, the contact area between the sheet 12 and the floor surface (the contact member 13 in this embodiment) is almost the same. In other words, the door 10 according to the present embodiment does not have problems such as an increase in the size of the device configuration or an increase in the weight of the sheet 12 as a whole, and can ensure high airtightness with a simple configuration. Become.

Note that, as in another embodiment of the shielding structure shown in FIG. 4, the shape of the groove-shaped portion 113g formed on the upper surface of the abutment member 113 can be made different from the shape of the groove-shaped portion 13g according to the present embodiment. be. Specifically, as shown in FIG. 4, the groove portion 113g is configured in a V-shape with two continuous side surfaces 113a.

When the lower end of the sheet 12 contacts the inner surface of the groove 113g of the abutment member 113, two tangents are formed between the cylindrical portion 12p and the groove 113g. Specifically, as shown in FIG. 4, when the lower end of the sheet 12 abuts the side surfaces 113a, 113a of the grooved portion 113g, the cylindrical portion 12p forms tangents L4 and L5 with the side surfaces 113a, 113a. be done.

In this way, in the door according to another embodiment of the shielding structure, airtightness is ensured by the two tangent lines L4 and L5, so that the cylindrical part 12p or the contact member 113 at the lower end of the sheet 12 Even if a portion is damaged, the airtightness of the door will not be compromised. That is, in the door according to the present invention, the shape of the groove portion may be such that a plurality of tangents to the cylindrical portion 12p are formed, and the specific shape thereof is limited to this embodiment or another example. It is not something that will be done.

Furthermore, in the door 10 according to the present embodiment, a rod 16, which is a weight member, is provided at the lower bottom inside the cylindrical portion 12p. Thereby, the lower bottom portion of the cylindrical portion 12p can be brought into contact with the bottom surface 13b of the groove portion 13g using the weight of the rod 16, so that higher airtightness can be ensured.

Further, in the door 10 according to the present embodiment, the rod body 16, which is a rod-shaped member, is arranged parallel to the rotation axis 11a of the main roller 11m. As a result, the lower bottom of the cylindrical portion 12p can be uniformly brought into contact with the bottom surface 13b of the grooved portion 13g along the longitudinal direction by using the weight of the rod 16, thereby ensuring even higher airtightness. It becomes possible to do so.

In addition, in the door 10 according to the present embodiment, the rod 16 is fixed to the lower bottom of the cylindrical portion 12p, and there is a space between the upper bottom of the cylindrical portion 12p and the rod 16 in the vertical direction. A tension spring 17, which is an elastic member that elastically deforms in response to a tensile force, is provided. As a result, as shown in FIG. 3(a), the rod 16 fixed to the lower bottom of the cylindrical portion can be pulled up by the tension spring 17, so that the cylindrical portion 12p is a film-like member with no shape stability. Even when formed from the sheet 12, the shape of the cylindrical portion 12p can be stabilized.

Further, as shown in FIG. 3(b), when the lower bottom portion of the cylindrical portion 12p contacts the bottom surface 13b of the groove portion 13g, the tension spring 17 touches the bottom portion of the cylindrical portion 12p via the rod 16. By pulling upward, the cylindrical portion 12p can be widened in the thickness direction of the sheet 12 (the left-right direction in FIG. 3(b)). Thereby, tangents between the cylindrical portion 12p and the side surfaces 13s and 13s of the grooved portion 13g can be stably formed.

10 Sheet door (shielding structure)
11 Roller part 11a Rotating shaft
11m main roller 11s sub roller
12 Sheet (shielding object)
12p cylindrical part
13 Contact member 13g Groove portion
13b Bottom 13s Side
14 Guide rail 15 Guide roller
16 Rod (heavy member)
16a Engaging portion 17 Tension spring (elastic member)
17a Hook portion 113 Contact member (another embodiment)
113g Groove 113a Slanted surface
M Motor W Wall
P Column F Floor
L Tangent line B Housing

Claims (6)

A shielding structure comprising: a shield that can be moved up and down to cover an opening; and a contact member that is provided so that a lower end of the shield can come into contact with it,
A cylindrical part in which a membrane member is folded back is formed at the lower end of the shield,
A groove-shaped portion into which the lower side of the cylindrical portion is inserted is formed on the upper surface of the abutment member,
The cylindrical portion has a plurality of tangent lines with the groove portion when the lower end portion of the shield abuts the contact member ,
The shielding structure includes an elastic member that is elastically deformed in response to a vertical tensile force inside the cylindrical portion . The shield is a rectangular sheet whose upper end is connected to a rotating shaft of a horizontally stretched roller, is wound around the roller, and whose lower end is suspended,
The shielding structure according to claim 1, wherein the cylindrical portion is formed by folding back a lower end portion of the sheet as the membrane member. The groove-shaped part is composed of a bottom surface and two side surfaces continuous with the bottom surface,
The cylindrical portion is deformed so as to be widened in the thickness direction of the shield when the lower end of the shield comes into contact with the abutment member, and the cylindrical portion deforms so as to widen in the thickness direction of the shield, and the bottom surface and the two side surfaces of the groove-shaped portion 3. The shielding structure according to claim 1 or 2, wherein a tangent line is formed with each of the shielding structures. The shielding structure according to any one of claims 1 to 3, wherein a weight member is provided at a lower bottom inside the cylindrical part. The shielding structure according to claim 4, wherein the weight member is a rod-shaped member. The weight member is fixed to the lower bottom part of the cylindrical part,
The shielding structure according to claim 4 or 5, wherein the elastic member is provided inside the cylindrical part between an upper bottom part and the weight member.

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