JP2020133156A - Heat insulation structure of overhead door lower end - Google Patents

Abstract

To improve heat insulation performance of an overhead door lower end.SOLUTION: At a lower end of a door body of an overhead door, a hollow bottom element 6 made of an elastic member is fixed. The bottom element 6 is integrally formed from: a first fixed part 60 fixed to one side in the inward/outward direction of the lower end of the door body; a second fixed part 61 fixed to the other side in the inward/outward direction; a first portion 62 extending downward from the first fixed part 60; a second portion 63 extending downward from the second fixed part 61; and a substantially horizontal third portion 64 for connecting the lower end side of the first portion 62 and the lower end side of the second portion 63. At the lower end of the door body, a partition element 8 is fixed located in a hollow part of the bottom element 6, and made of an elastic member. When the third portion 64 of the bottom element 6 reaches the floor, a plurality of spaces S1, S2, S3 are formed adjacent to the inward/outward direction in the hollow part by the partition element 8.SELECTED DRAWING: Figure 3

Description

The present invention relates to a heat insulating structure at the lower end of an overhead door.

Overhead doors are known as fittings installed in openings that connect the outdoors and indoors of buildings such as warehouses and garages. The door body of the overhead door is composed of a plurality of horizontally rectangular sections, that is, panels, which are rotatably connected to each other in the vertical direction via hinges, and guide rollers at both left and right ends in the width direction of each panel. Opens and closes the opening by ascending and descending while being guided by guide rails provided on the left and right in the width direction of the opening.

A hollow rubber or resin cushioning material is usually provided at the lower end of the door body of the overhead door (see Patent Document 1), and the cushioning material adheres to the floor surface when the opening is fully closed. Seal the gap between the door and the floor. This hollow cushioning material functions as an airtight material when the opening is fully closed, in addition to the cushioning function when the lower end of the door body is landed.

In an overhead door that requires airtightness, when the opening is fully closed, the cushioning material at the lower end of the door body of the overhead door is in close contact with the floor surface, and both ends of the outdoor surface of the door body in the width direction are skeletons (typical). By contacting the airtight material provided on the skeleton, the three sides (left and right ends and lower end) of the opening are closed. However, especially when the overhead door is used for heat insulation, the conventional airtight structure does not always have sufficient heat insulation performance and airtightness (particularly, the lower end parts on the left and right sides in the width direction of the door body). Ensuring the heat insulation performance and airtightness of the lower end of the door body has been an issue.

The conventional cushioning material 6'exemplified in FIG. 7 is made of hollow elastic rubber, and the cushioning material 6'is fixed to the mounting portion P1'of the indoor side portion of the retainer 7'at the lower end of the lowermost panel 1. The first fixing portion 60', the second fixing portion 61' fixed to the mounting portion P2'of the outdoor side portion of the retainer 7'at the lower end of the lowermost panel 1, and the second fixing portion 61'extending downward from the first fixing portion 60'. A substantially horizontal third portion that connects the first portion 62', the second portion 63' that extends downward from the second fixed portion 61', and the lower end side of the first portion 62' and the lower end side of the second portion 63'. It is integrally formed with 64'.

As shown in FIG. 7, the cushioning material 6'at the lower end of the door body of the overhead door is formed of a hollow rubber member, and seals between the lower end of the door body and the floor surface FL when the opening is fully closed. However, when the opening is fully closed, the influence of heat transfer through the air in the hollow portion of the cushioning material 6'is not considered at all.

When the opening is fully closed, both ends in the width direction of the outdoor surface portion 11 of the panel 1 come into contact with the first airtight material 9A and the second airtight material 9B provided on the finding surface 200 of the skeleton 20 (see FIG. 8). ), The second portion 63'of the cushioning material 6'at the lower end of the panel 1 is separated from the first airtight material 9A and the second airtight material 9B, and is located indoors and outdoors at the lower end portions of the left and right ends of the panel 1 in the width direction. A gap is created for communication, and the gap forms an air entry path (see FIG. 9). Although the conventional cushioning material 6'ensures the airtightness between the lower end of the door body and the floor surface, the airtightness of the lower end portions of the left and right ends of the door body in the width direction is not sufficiently considered.
JP 2017-214745

An object of the present invention is to improve the heat insulating performance of the lower end of the overhead door.

The technical means adopted by the present invention is
In an overhead door that closes the opening with a door body that connects multiple panels in the height direction to partition the inside and outside.
A hollow bottom element made of an elastic member is fixed to the lower end of the door body, and the bottom element has a first fixing portion fixed to one side of the lower end of the door body in the inner / outer direction and an inner / outer direction. A second fixed portion fixed to the other side, a first portion extending downward from the first fixed portion, a second portion extending downward from the second fixed portion, a lower end side of the first portion, and a lower end of the second portion. It is integrally formed with a substantially horizontal third part that connects the sides.
A partition element made of an elastic member is fixed to the lower end of the door body at a hollow portion of the bottom element, and when the third portion of the bottom element lands on the floor, the partition element causes the partition element. Multiple spaces are formed in the hollow portion adjacent to each other in the inward and outward directions.
Insulation structure at the bottom of the overhead door.
In one embodiment, the bottom element and the partition element are made of rubber or resin.
In one embodiment, when the opening is fully closed, the door body has a first surface portion located on the indoor side and a second surface portion located on the outdoor side, and the first portion of the bottom element is located on the indoor side and the second surface portion. The portion is located on the outdoor side, and the skeleton is in contact with both ends in the width direction of the second surface portion of the door body and at least a part of the second portion of the bottom element when the opening is fully closed. An airtight material extending in the height direction is provided, and when the opening is fully closed, both ends of the bottom element in the length direction are located in a space separated from the outdoor space by the airtight material.

In one embodiment, the partition element is a first fixed portion and a second fixed portion fixed to the lower end of the door body separated in the inward and outward directions, a first portion extending downward from the first fixed portion, and a first portion. 2 It is integrally formed from a second portion extending downward from the fixed portion and a substantially horizontal third portion connecting the lower end side of the first portion and the lower end side of the second portion.
When the bottom element lands on the floor, the third portion of the partition element comes into close contact with the third portion of the bottom element, and a space of three chambers is formed in the hollow portion adjacent in the inner and outer directions.

In one embodiment, the partition element is one or more fins fixed to the lower end of the door body.
When the bottom element has landed, the lower end portions of the one or more fins are in close contact with the third portion of the bottom element, and a plurality of spaces are formed in the hollow portion adjacent to each other in the inward and outward directions.
In one embodiment, the partition element comprises a first fin and a second fin fixed to the lower end of the door body separated in the inward and outward directions, and the first fin is a first fixing portion at the upper end. The second fin is fixed to the lower end of the door body, and the second fin is fixed to the lower end of the door body at the second fixing portion at the upper end.
When the bottom element has landed, the lower end portion of the first fin and the lower end portion of the second fin are in close contact with the third portion of the bottom element, respectively, and are adjacent to each other in the hollow portion in the inward and outward directions. A space of 3 rooms is formed.
In one embodiment, the lower end portion of the first fin and the lower end portion of the second fin extend so as to be separated from each other.

In one aspect, a retainer is provided at the lower end of the door body, and the bottom element and the partition element are attached to the retainer.
In one embodiment, a retainer is provided at the lower end of the door body to which the first fixing portion and the second fixing portion of the bottom element are fixed.
On the lower surface of the retainer, fixed portions to which the first fixing portion and the second fixing portion of the partition element are fixed are formed so as to be separated from each other in the inward and outward directions.

In one embodiment, when the opening is fully closed, the door body has a first surface portion located on the indoor side and a second surface portion located on the outdoor side, and the first portion of the bottom element is located on the indoor side and the second surface portion. The portion is located on the outdoor side, and the second portion is a perpendicular surface substantially flush with the second surface portion on the outside of the door body.
When the third portion of the bottom element has landed, the second surface portion of the door body is in close contact with the skeleton, and the second portion of the bottom element is attached to the skeleton at least in half or more in the height direction. In close contact.
In one embodiment, the close contact portion of the second portion comprises the upper half portion of the second portion.
In one embodiment, when the third portion of the bottom element lands, the second portion of the bottom element, which is elastically deformed in a bulging shape while generally maintaining a vertical posture by implantation, is at least in the height direction. It adheres to the skeleton in more than half of the above.
In one embodiment, the skeleton is provided with an airtight material extending in the height direction so that both ends in the width direction of the second surface portion of the door body come into contact with each other when the opening is fully closed.
The lower end of the airtight material reaches the floor surface, and when the third portion of the bottom element lands on the floor, the second portion of the bottom element comes into close contact with the airtight material provided on the skeleton.
In one embodiment, a shoulder portion having a horizontal plane is formed at the upper end of the second portion of the bottom element, and the horizontal plane of the shoulder portion is an outdoor portion of the lower end of the door body (in the embodiment described later). , The outdoor lower piece 74) of the retainer 7 is in contact with the surface.
In one embodiment, the shoulder is thicker than other parts of the bottom element.
In one embodiment, the inside-outward dimension of the bottom element is greater than the height dimension.

In the present invention, when the third portion of the bottom element lands on the floor, a plurality of spaces (so-called heat insulating spaces) are formed in the hollow portion of the bottom element adjacent to each other in the inner and outer directions by the partition element, so that the outdoor space and the room The inner spaces are adjacent to each other via a plurality of heat insulating spaces, and heat transfer between indoors and outdoors via the hollow portion of the bottom element can be suppressed, and the heat insulating performance of the lower end of the overhead door can be improved.
When the opening is fully closed, the gap that can be formed at the lower ends of both ends in the width direction of the door body is made as small as possible to suppress the flow of air between the indoor space and the outdoor space that pass through the gap. As a result, the airtightness is improved, and the heat insulation performance is improved.
Further, by making the gaps at the lower ends of both ends of the door body in the width direction when the opening is fully closed as small as possible, a dustproof effect and an insect repellent effect can be obtained.

It is a front view which looked at the overhead door in a fully closed posture from the indoor side. It is a side view of the overhead door in a fully closed posture. It is a vertical cross-sectional view of the lower end part of the door body of the overhead door in a fully closed posture, and shows the heat insulation structure which concerns on 1st Embodiment. FIG. 3 is a cross-sectional view taken along the line CC of FIG. It is a vertical sectional view of the lower end part of the door body of the overhead door in a fully closed posture, and shows the heat insulation structure which concerns on 2nd Embodiment. (A) is a cross-sectional view of the partition element according to the first embodiment, (B) is a cross-sectional view of the bottom element, and (C) is a cross-sectional view of the partition element according to the second embodiment. It is a vertical cross-sectional view which shows the conventional structure of the lower end part of the door body of an overhead door in a fully closed posture. FIG. 7 is a cross-sectional view taken along the line AA of FIG. FIG. 7 is a cross-sectional view taken along the line BB of FIG.

[A] Overall configuration of the overhead door FIG. 1 is a front view of the overhead door in a fully closed posture as viewed from the indoor side, and FIG. 2 is a side view of the overhead door. The door body of the overhead door is formed by connecting a plurality of horizontally rectangular panels 1 rotatably to each other in the vertical direction via a hinge 2. Roller brackets 4 that also serve as hinges at both ends in the width direction and rotatably support the guide roller 3 are provided at both left and right ends in the width direction of each panel 1, and the door body has left and right ends in the width direction of each panel 1. The guide roller 3 of the above opens and closes the opening by ascending and descending while being guided by the guide rails 5 provided on the left and right in the width direction of the opening. In FIGS. 2, 3, and 5, the right side of the panel 1 is the indoor side and the left side is the outdoor side, and in FIG. 8, the lower side of the panel 1 is the indoor side and the upper side is the outdoor side. In the present specification, the thickness direction of the panel 1 in the fully closed posture is referred to as the inside / outside direction.

At the lower end of the door body, that is, at the lower end of the lowermost panel 1, a bottom element 6 made of an elastic member is provided so as to close the gap between the floor surface FL and the lower end of the panel when the opening is fully closed. In the present embodiment, the bottom element 6 is a hollow member made of rubber or resin, and may be referred to as a weather strip. The bottom element 6 has a function as a cushioning material when the lower end of the door body is landed and as an airtight material when the opening is fully closed.

In the present embodiment, the bottom element 6 is attached via a retainer 7 provided at the lower end of the lowermost panel 1, and a partition element 8 made of an elastic member is fixed inside the hollow bottom element 6. Has been done. A detailed description of the bottom element 6, the partition element 8, and the retainer 7 will be described later. The overhead door according to the present embodiment is preferably installed in an opening (for example, an opening of a refrigerated warehouse) where heat insulation performance is required. In the overhead door according to the present embodiment, the conventional overhead door configuration can be used for the configuration excluding the heat insulating structure at the lower end of the door body and the airtight structure at the lower ends at both ends in the width direction of the door body. Therefore, FIG. 8 showing the conventional configuration (cross-sectional view of the intermediate portion in the height direction of the widthwise end portion of the lowermost panel 1) can be applied to the description of the present embodiment.

As shown in FIG. 2, the guide rail 5 includes a first portion 50 extending in the height direction of the opening, and a curved second portion 51 extending rearward from above the first portion 50 toward the indoor side. It is composed of a third portion 52 extending rearward along the ceiling CL from the rear of the second portion 51. The first portion 50 is gently inclined toward the room from the bottom to the top. The third portion 52 is gently inclined upward toward the indoor side.

In the fully closed state where the bottom element 6 at the lower end of the door body lands on the floor surface FL, each panel 1 is located at the first portion 50 of the guide rail 5, so that the plurality of panels 1 are in a substantially vertical posture. And close the opening. In the fully open state, each panel 1 moves from a substantially vertical posture to a substantially horizontal posture located at the third part 52 (the lowest panel 1 is located at the second part 51), and the door body is an indoor space. The opening is opened in a posture extending laterally along the ceiling CL of the.

The opening is formed between the prospective surfaces 201 of the left and right skeletons 20, and the guide rail 5 (first portion 50) is supported by the mitsuke surfaces 200 of the left and right skeletons 20. In the present embodiment, the guide rail 5 (first portion 50) has a finding surface 200 of the skeleton 20 on the left and right of the opening via a support frame 500 and a support plate 501 that extend vertically over substantially the entire height of the opening. It is supported in a carry-out shape (see FIG. 8).

As shown in FIG. 8, the support frame 500 is a long member having an L-shaped cross section from the first side 5000 and the second side 5001, and the first side 5000 is overlapped with the found surface 200 of the skeleton 20. In this way, it is connected to the finding surface 200 of the skeleton 20 by the screw 21 (see FIG. 9 for the configuration of the support frame 500). In a state where the first side 5000 is connected to the finding surface 200 of the skeleton 20, the second side 5001 extends perpendicularly to the finding surface 200 toward the indoor side. A support plate 501 is connected to the outer surface of the second side 5001 in surface contact, and the indoor side portion of the support plate 501 becomes an extension portion extending inward beyond the end portion of the second side 5001. The guide rail 5 is connected to the inner surface of the extension portion. In the present embodiment, the support frame 500 and the support plate 501 are made of separate members, but these may be integrally formed.

As shown in FIG. 8, the panel 1 includes an indoor side surface portion 10, an outdoor side surface portion 11, and left and right side surfaces 12 in the width direction. At both ends in the width direction of the panel 1, there are a first found side 120 that is in close contact with the indoor side surface portion 10 of the panel 1, a second found side 121 that is in close contact with the outdoor side surface portion 11 of the panel 1, and a prospective side 122. A vertical stile formed in a substantially U-shape in cross-sectional view is provided, and the prospective side 122 is the side surface 12 of the panel 1. The plurality of intermediate panels 1 located between the uppermost panel 1 and the lowermost panel 1 have a convex upper end portion 13 and a concave lower end portion 14, and when the opening is fully closed, the upper side is provided. The convex upper end portion 13 of the panel 1 located on the lower side is fitted to the concave lower end portion 14 of the panel 1 located in (see FIG. 2). An airtight material (not shown) made of an elastic member is provided on one or both of the upper end 13 and the lower end 14 of the panel 1, and when the opening is fully closed, the lower end 14 and the lower side of the panel 1 located on the upper side are provided. The upper end portion 13 of the panel 1 located at may be brought into close contact with the airtight material.

As shown in FIG. 8, when the door body is in the fully closed posture, both ends in the width direction of the outdoor surface portion 11 of the panel 1 (in the present embodiment, the ends provided at both ends in the width direction of the outdoor surface portion 11). The plate 123) is separated and opposed to the finding surface 200 of the skeleton 20 with a gap. The skeleton 20 is provided with fin-shaped first airtight material 9A and hollow second airtight material 9B arranged in the opening width direction and extending in the height direction of the opening, and the door body is provided at the opening. When the panel 1 is in the fully closed state, the outdoor surface portion 11 of the panel 1 comes into contact with the first airtight material 9A and the second airtight material 9B in the height direction, so that the widthwise end portion of the panel 1 and the skeleton 20 are contacted. It is designed so that a gap that communicates indoors and outdoors is not formed between the two.

The base end of the first airtight material 9A is fixed to the corners of the finding surface 200 and the prospecting surface 201 of the skeleton 20, and the tip is attached to the outdoor surface portion 11 of the panel 1 in a fully closed posture (vertical posture). It extends in a plan view toward the center of the panel 1 so as to come into contact with each other. The second airtight material 9B is located on the side away from the center of the opening with respect to the first airtight material 9A, is fixed to the finding surface 200 of the skeleton 20, and is a panel in a fully closed posture (vertical posture). It has a cross-sectional dimension so as to come into contact with the outdoor surface portion 11 (end plate 123) of 1.

The shape of the airtight material, particularly the shape of the second airtight material 9B, is not limited to the illustrated embodiment. In the present embodiment, both the first airtight material 9A and the second airtight material 9B extend over substantially the total height of the opening, but one of the airtight materials (for example, the first airtight material 9A) is set to the total height of the opening. The other airtight material (for example, the second airtight material 9B) may be provided only in the portion below the opening. In the present embodiment, two airtight materials are provided, but when the opening is fully closed, one airtight material may be used to close the gap between the widthwise end portion of the panel 1 and the skeleton.

The overhead door is equipped with a locking device that regulates the upward movement of the door body in a fully closed position. Left and right latches that can be moved between the locked posture and the retracted posture and are urged to take the locked posture at both the left and right ends in the width direction of the second panel 1 from the bottom of the door body of the overhead door. L is provided. When the bottom element 6 at the lower end of the descending door body lands on the floor surface FL and is fully closed, the left and right latches L are provided at predetermined height positions of the first portion 50 of the guide rail 5. It locks on the left and right latch hooks (not shown) and locks, and the upper movement of the door is restricted. As shown in FIG. 1, an unlocking operation portion 15 connected to the left and right latches L by wires W1 and W2 is provided at a central portion in the width direction of the indoor side surface portion 10 of the panel 1 to open an opening. At that time, the locked state is released by the rotation operation of the unlocking operation unit 15, and the door body is raised.

The overhead door according to this embodiment is a manual type. A rotating shaft 17 provided with a balance spring 16 is arranged above the opening, and the other end of a wire (not shown) having one end fixed to a drum 18 pivotally supported at both ends of the rotating shaft 17. Is connected to the wire fixing portions 19 (see FIG. 8) at both the left and right ends of the lowermost panel 1, and the door is in a fully closed position by winding the wire with the urging force in the winding direction of the balance spring 16. Move your body up to open the opening. A fall prevention device 22 for preventing the panel 1 from falling in an emergency such as a wire being cut is provided at both ends of the indoor side surface portion 10 of the lowermost panel 1 in the width direction, and the fall prevention device 22 is a cover 22. Covered by ´.

[B] Insulation structure at the lower end of the overhead door The bottom element 6 according to the present embodiment is a long member made of hollow elastic rubber and extending in the width direction of the panel 1. The bottom element 6 includes a first fixing portion 60 fixed to the indoor side portion of the lower end of the lowermost panel 1, a second fixing portion 61 fixed to the outdoor side portion of the lower end of the lowermost panel 1, and first fixing. A substantially horizontal first portion that connects the first portion 62 extending downward from the portion 60, the second portion 63 extending downward from the second fixing portion 61, and the lower end side of the first portion 62 and the lower end side of the second portion 63. It is integrally formed from the three portions 64. In the present embodiment, when the opening is fully closed, the first portion 62 of the bottom element 6 is located on the indoor side, and the second portion 63 is located on the outdoor side. The bottom element 6 according to the present embodiment has a dimension in the inward and outward directions larger than the height dimension in the state before deformation in which no external force acts.

More specifically, as shown in FIG. 6B, the first fixing portion 60 of the bottom element 6 extends horizontally in the inside / outside direction and the length direction of the bottom element 6, and the first fixing portion 60 of the bottom element 6 extends horizontally. The connection piece 600 extends downward from the lower surface toward the indoor side. The first portion 62 of the bottom element 6 extends substantially vertically, and a shoulder portion 620 having a horizontal upper surface is formed at the upper end, and the lower end of the connecting piece 600 is inside the upper surface of the shoulder portion 620. It is connected to the end (the side away from the first portion 62). The second fixing portion 61 of the bottom element 6 extends horizontally in the inward / outward direction and the length direction of the bottom element 6, and the connecting piece 610 extends downward from the lower surface of the second fixing portion 61 toward the outdoor side. ing. The second portion 63 of the bottom element 6 extends substantially vertically, and a shoulder portion 630 having a horizontal upper surface is formed at the upper end, and the lower end of the connecting piece 610 is inside the upper surface of the shoulder portion 630. It is connected to the end (the side away from the second portion 63).

In the present embodiment, the shoulder portions 620 and 630 of the bottom element 6 are thicker than other portions. In the shoulder portions 620 and 630 of this thickness, the bottom element 6 is relatively low in height (the dimension in the inward and outward directions is larger than the height dimension), and the bottom element 6 is implanted and high. When a force is applied in the longitudinal direction, excessive deformation of the first portion 62 and the second portion 63 is suppressed, and the outer vertical surfaces of the first portion 62 and the second portion 63 are maintained as much as possible. In the present embodiment, when discussing the airtightness of the lower end portions of the left and right ends in the width direction of the door body in the fully closed state of the opening, the second part 63 of the bottom element 6, the first airtight material 9A, and the second airtight material 9B The relationship between the lower end parts becomes a problem (Figs. 3 and 4). Therefore, in the airtightness performance, the shape of the second portion 63 of the bottom element 6 is important, and the shape of the first portion 62 does not necessarily have a substantial effect on the airtightness performance. The bottom element 6 according to the present embodiment has a symmetrical shape in the inward and outward directions in a cross-sectional view, but it is not essential that the first portion 62 and the second portion 63 have the same shape.

In the fully closed state of the opening, the first portion 62 of the bottom element 6 faces the indoor space, and the second portion 63 of the bottom element 6 faces the outdoor space. The third portion 64 of the bottom element 6 is in close contact with the floor surface FL. Both end portions of the second portion 63 of the bottom element 6 in the length direction (panel width direction) are in contact with the first airtight material 9A and the second airtight material 9B provided on the finding surface 200 of the skeleton 20, respectively. (See FIGS. 3 and 4).

A partition element 8 made of an elastic member is fixed to the lower end of the lowermost panel 1 at a hollow portion of the bottom element 6. The partition element 8 is a long member extending in the length direction (panel width direction) of the bottom element 6. When the third portion 64 of the bottom element 6 lands, the partition element 8 partitions the internal space of the bottom element 6 in the inward and outward directions, and a plurality of spaces S1 and S2 adjacent to each other in the hollow portion of the bottom element 6 in the inward and outward directions. , S3 is formed.

The partition elements 8 shown in FIGS. 3 and 4 are fixed to the lower end of the lowermost panel 1 at intervals in the inward and outward directions from the first fixing portion 80 and the second fixing portion 81, and downward from the first fixing portion 80. From the extending first portion 82, the second portion 83 extending downward from the second fixing portion 81, and the substantially horizontal third portion 84 connecting the lower end side of the first portion 82 and the lower end side of the second portion 83. It is integrally formed, and when the bottom element 6 lands on the floor, the third portion 84 of the partition element 8 is in close contact with the third portion 64 of the bottom element 6, and 3 is adjacent to the hollow portion of the bottom element 6 in the inward and outward directions. The chamber spaces S1, S2, and S3 are formed.

The third portion 84 of the partition element 8 and the third portion 64 of the bottom element 6 may be in close contact with each other at least when the opening is fully closed (when the bottom element 6 is landed), and the bottom element 6 is landed. At the previous time point, even if the third portion 84 of the partition element 8 is in close contact with the third portion 64 of the bottom element 6, or the third portion 84 of the partition element 8 is separated from the third portion 64 of the bottom element 6. You may be doing it.

In this embodiment, the bottom element 6 and the partition element 8 are attached to the retainer 7 provided at the lower end of the lowermost panel 1. The retainer 7 includes a base 70 located at the lower end of the panel 1 and extending horizontally in the panel width direction, and the base 70 has a first mounting portion formed on the lower surface of one end (indoor side portion) of the base 70 in the inner and outer directions. P1, the second mounting portion P2 formed on the lower surface of one end (outdoor side portion) in the inner / outer direction of the base 70, located on the lower surface of the inner / outer end (indoor side portion) of the base 70, inside the first mounting portion P1. A third mounting portion P3 formed in the above manner, and a fourth mounting portion P4 formed inside the second mounting portion P2 are provided on the lower surface of one end (outdoor / outer portion) of the base 70 in the inner / outer direction.

More specifically, as shown in FIG. 3, on the lower surface of the base 70, an indoor side finding piece 71 hanging from the indoor side end of the base 70 and an indoor side finding piece 71 hanging from the lower end of the indoor side finding piece 71 to the outdoor side. An indoor lower piece 72 extending horizontally, an outdoor finding piece 73 hanging from the outdoor end of the base 70, and an outdoor lower piece 74 extending horizontally from the lower end of the outdoor finding piece 73 to the indoor side. In the indoor side portion of the lower surface of the base 70, the first convex strip (extending in the width direction of the panel 1 and the length direction of the retainer 7) 75 protruding downward toward the indoor side finding piece 71, and the first convex The first horizontal projecting piece 76 extending horizontally from the lower end of the strip 75 toward the indoor side lower piece 72 and the outdoor side portion of the lower surface of the base 70 project downward toward the outdoor side finding piece 73. The second ridge (extending in the width direction of the panel 1 and the length direction of the retainer 7) 77 and the second horizontal protrusion extending horizontally from the lower end of the second ridge 77 toward the outdoor lower piece 74. Pieces 78 and are formed.

The space surrounded by the indoor side portion of the lower surface of the base 70, the indoor side finding piece 71, the indoor side lower piece 72, the first ridge 75, and the first horizontal projecting piece 76 is the first mounting portion P1. It has become. The space surrounded by the outdoor side portion of the lower surface of the base 70, the outdoor side finding piece 73, the outdoor side lower piece 74, the second ridge 77, and the second horizontal projecting piece 78 is the second mounting portion P2. It has become. The groove portion having a substantially circular shape in cross section formed on the first ridge 75 in the length direction is the third mounting portion P3. The groove portion having a substantially circular shape in cross section formed on the second ridge 77 in the length direction is the fourth mounting portion P4.

Horizontal grooves G1 and G2 are formed at the indoor side end and the outdoor end of the upper surface of the base 70, respectively, and the surface material forming the indoor side surface portion 10 and the outdoor side surface portion 11 of the panel 1, respectively. The bent part at the lower end is accepted. The indoor side finding piece 71 and the outdoor side finding piece 73 of the retainer 7 are on substantially the same vertical plane as the indoor side surface portion 10 and the outdoor side surface portion 11 of the panel 1, respectively (see FIG. 3). The retainer 7 shown in the figure is one embodiment, and the shape of the retainer 7 is not limited to the mode shown in the figure.

As shown in FIG. 3, the first fixing portion 60 of the bottom element 6 is fixed or mounted on the first mounting portion P1, and the second fixing portion 61 of the bottom element 6 is fixed or mounted on the second mounting portion P2. .. The indoor lower piece 72 of the retainer 7 fits into the indoor side portion of the first fixing portion 60 of the bottom element 6, the indoor side portion of the connecting piece 600, and the groove portion formed from the upper surface of the shoulder portion 620 of the first portion 62. The indoor side portion of the first fixing portion 60 is locked (mounted) on the indoor side lower piece 72 of the retainer 7, and the outdoor side portion of the first fixing portion 60 is the third of the retainer 7. 1 Locked (mounted) on the horizontal projecting piece 76, and the vertical outer surface of the first portion 62 of the bottom element 6 is closer to the indoor side than the vertical outer surface of the indoor side finding piece 71 of the retainer 7. positioned. The upper surface of the shoulder portion 620 at the upper end of the first portion 62 of the bottom element 6 is in contact with the lower surface of the indoor lower piece 72 of the retainer 7.

The outdoor lower piece 74 of the retainer 7 fits into the outdoor portion of the second fixing portion 61 of the bottom element 6, the outdoor portion of the connecting piece 610, and the groove formed from the upper surface of the shoulder portion 630 of the second portion 63. The outdoor portion of the second fixing portion 61 is locked (placed) on the outdoor lower piece 74 of the retainer 7, and the indoor portion of the second fixing portion 61 is the third of the retainer 7. 2 Locked (mounted) on the horizontal projecting piece 78, the vertical outer surface of the second portion 63 of the bottom element 6 is on the outdoor side of the vertical outer surface of the outdoor side finding piece 73 of the retainer 7. positioned. The upper surface of the shoulder portion 630 at the upper end of the second portion 63 of the bottom element 6 is in contact with the lower surface of the outdoor lower piece 74 of the retainer 7.

When the bottom element 6 lands, the third portion 84 of the partition element 8 comes into close contact with the third portion 64 of the bottom element 6, and the spaces S1 and S2 of the three chambers are adjacent to each other in the hollow portion of the bottom element 6 in the inward and outward directions. , S3 is formed. Specifically, the first portion 62 of the bottom element 6, the first portion 82 of the partition element 8, the indoor side portion of the lower surface (retainer 7) of the panel 1, and the indoor side of the third portion 64 of the bottom element 6. The first space S1 on the indoor side is formed from the space surrounded by the parts, the second part 63 of the bottom element 6, the second part 83 of the partition element 8, and the outdoor part of the lower surface (retainer 7) of the panel 1. The outdoor second space S2 is formed from the space surrounded by the outdoor portion of the third portion 64 of the bottom element 6, and the first portion 82 of the partition element 8 and the second portion 83 of the partition element 8 are formed. , The space surrounded by the central portion of the lower surface (retainer 7) of the panel 1 in the inner / outer direction and the third portion 84 of the partition element 8 (which is in close contact with the third portion 64 of the bottom element 6) is intermediate in the inner / outer direction. The third space S3 is formed.

The first fixing portion 80 of the partition element 8 is fixed (mounted) to the third mounting portion P3, and the second fixing portion 81 of the partition element 8 is fixed (mounted) to the fourth mounting portion P4. The partition element 8 is a third mounting portion P3, a fourth mounting portion P3 formed on a retainer 7 provided on the lower surface of the panel 1 in the first fixing portion 80 and the second fixing portion 81 at the upper end in the hollow portion of the bottom element 6. Since it is fixed to the portion P4, even if the bottom element 6 and the partition element 8 are repeatedly elastically deformed during the repeated opening and closing operation of the door body of the overhead door, the partition element 8 may be detached or the inside of the hollow portion of the bottom element 6 may be separated. When the opening is fully closed, the hollow portion of the bottom element 6 can be more reliably separated into the first space S1, the second space S2, and the third space S3 into three layers in the inward and outward directions without moving. it can.

In a state where no external force acts on the bottom element 6, the first portion 62 of the bottom element 6 is a perpendicular surface substantially flush with the indoor side surface portion 10 of the panel 1, and the second portion 63 of the bottom element 6 is It is a vertical surface substantially flush with the outdoor surface portion 11 of the panel 1. More specifically, the vertical outer surface of the first portion 62 of the bottom element 6 is located slightly more indoor than the interior side surface portion 10 of the panel 1, and the vertical outer surface of the second portion 63 of the bottom element 6 is vertical. The outer surface is located slightly outside the outdoor surface portion 11 of the panel 1 and coincides with the surface portions of the end plate 123 provided at both ends of the outdoor surface portion 11 of the panel 1 in the width direction.

When the third portion 64 of the bottom element 6 lands, both end portions of the outdoor surface portion 11 of the panel 1 in the width direction are separated from each other and face the finding surface 200 of the skeleton 20, and swells while maintaining a vertical posture by landing. The second portion 63 of the bottom element 6 elastically deformed in a protruding shape is in close contact with the lower end side portions of the first airtight material 9A and the second airtight material 9B at least in half or more in the height direction (see FIGS. 3 and 4). .. In the embodiment shown in FIG. 3, the portion of the bottom element 6 including the upper half of the second portion 63 is in close contact with the lower end side portions of the first airtight material 9A and the second airtight material 9B. A thick shoulder portion 630 is integrally formed at the upper end of the second portion 63 of the bottom element 6, and a right-angled state between the outer vertical surface of the second portion 63 and the horizontal upper surface of the shoulder portion 630 is possible. Is maintained. Although FIG. 3 shows a state in which the outer vertical surface of the second portion 63 of the bottom element 6 is maintained, it may bulge and deform slightly when a force is applied in the height direction.

In the embodiment shown in FIG. 5, the partition element comprises a first fin 8A and a second fin 8B fixed to the lower end of the lowermost panel 1 so as to be separated from each other in the inward and outward directions. The first fin 8A located on the indoor side (the side closer to the first portion 62 of the bottom element 6) has a first fixing portion 80'at the upper end and a main body 82' that extends downward in a gentle curved shape toward the indoor side. The second fin 8B located on the outdoor side (the side closer to the second portion 63 of the bottom element 6) has a second fixing portion 81'at the upper end and a main body extending downward in a gentle curved shape toward the outdoor side. The lower end portion of the first fin 8A and the lower end portion of the second fin 8B extend so as to be separated from each other. When the third portion 64 of the bottom element 6 lands, the lower end portion of the first fin 8A and the lower end portion of the second fin 8B are in close contact with the third portion 64 of the bottom element 6, respectively, and the bottom element 6 is hollow. Spaces S1, S2, and S3 of three chambers are formed in the portion adjacent to each other in the inner and outer directions.

As shown in FIGS. 6A and 6C, the shape of the first fixing portion 80'at the upper end of the first fin 8A and the shape of the second fixing portion 81'at the upper end of the second fin 8B are the partition elements 8. The shape of the first fixing portion 80 and the shape of the second fixing portion 81 are the same. The first fixing portion 80'of the first fin 8A is fixed (mounted) to the third mounting portion P3, and the second fixing portion 81'of the second fin 8B is fixed (mounted) to the fourth mounting portion P4. In the embodiment shown in FIG. 5, the configuration of the bottom element 6 and the retainer 7 is the same as that of the embodiment shown in FIG. 3, and in the description of the embodiment according to FIG. 5, the bottom element 6 and the retainer 7 will be described above. Can be used.

When the third portion 64 of the bottom element 6 lands, the lower end portion of the first fin 8A and the lower end portion of the second fin 8B are in close contact with the third portion 64 of the bottom element 6, respectively, and the bottom element 6 is hollow. Spaces S1, S2, and S3 of three chambers are formed in the portion adjacent to each other in the inner and outer directions. Specifically, it is surrounded by the first portion 62 of the bottom element 6, the first fin 8A, the indoor side portion of the lower surface (retainer 7) of the panel 1, and the indoor side portion of the third portion 64 of the bottom element 6. The first space S1 on the indoor side is formed from the space, the second part 63 of the bottom element 6, the second fin 8B, the outdoor part of the lower surface (retainer 7) of the panel 1, and the third of the bottom element 6. The outdoor second space S2 is formed from the space surrounded by the outdoor portion of the portion 64, and the first fin 8A, the second fin 8B, the lower surface (retainer 7) of the panel 1 in the inner / outer direction, and the central portion in the inner / outer direction are formed. A third space S3 in the inner and outer directions is formed from the space surrounded by the third portion 64 of the bottom element 6.

The lower end portions of the first fin 8A and the second fin 8B and the third portion 64 of the bottom element 6 may be in close contact with each other at least when the opening is fully closed (when the bottom element 6 is landed), and the bottom element 6 At the time before landing, even if the lower end portions of the first fin 8A and the second fin 8B are in close contact with the third portion 64 of the bottom element 6, or the lower ends of the first fin 8A and the second fin 8B The portion may be separated from the third portion 64 of the bottom element 6.

In the present embodiment, the internal space of the hollow portion of the bottom element 6 has three chambers (first extending in the opening width direction) in the inward and outward directions by the partition element 8, the first fins 8A and the second fins B as the partition elements. It is divided into a space S1, a second space S2, and a third space S3). At the lower end of the overhead door when the opening is fully closed, the outdoor space and the indoor space are adjacent to each other via the three spaces of the first space S1, the second space S2, and the third space S3. Compared with the case where the bottom element 6'as shown in FIG. 7 is adopted, heat transfer between the indoor side space and the outdoor side space is suppressed as much as possible.

In the present embodiment, when the opening is fully closed, the second portion 63 of the bottom element 6 is at least half or more in the height direction including the upper half, and the lower end side portions of the first airtight material 9A and the second airtight material 9B. The gap that can be formed at the lower end portion of the outdoor surface portion 11 of the panel 1 is made as small as possible. By reducing such a gap, the air flow between the indoor space and the outdoor space passing through the gap is suppressed to improve the airtightness performance, thereby improving the heat insulating performance. Further, by making the gaps at the lower ends of both ends of the door body in the width direction when the opening is fully closed as small as possible, a dustproof effect and an insect repellent effect can be obtained.

1 panel 10 Indoor side surface (first surface)
11 Outdoor side surface (second surface)
6 Bottom element 62 1st part 63 2nd part 630 Shoulder part 64 3rd part 7 Retainer 8 Partition element 80 1st fixed part 81 2nd fixed part 8A 1st fin 80'1st fixed part 8B 2nd fin 81' 2 Fixed part FL Floor surface S1, S2, S3 Space P3 Third mounting part (fixed part)
P4 4th mounting part (fixed part)

Claims (7)

In an overhead door that closes the opening with a door body that connects multiple panels in the height direction to partition the inside and outside.
A hollow bottom element made of an elastic member is fixed to the lower end of the door body, and the bottom element has a first fixing portion fixed to one side of the lower end of the door body in the inner / outer direction and an inner / outer direction. A second fixed portion fixed to the other side, a first portion extending downward from the first fixed portion, a second portion extending downward from the second fixed portion, a lower end side of the first portion, and a lower end of the second portion. It is integrally formed with a substantially horizontal third part that connects the sides.
A partition element made of an elastic member is fixed to the lower end of the door body at a hollow portion of the bottom element, and when the third portion of the bottom element lands on the floor, the partition element causes the partition element. Multiple spaces are formed in the hollow portion adjacent to each other in the inward and outward directions.
Insulation structure at the bottom of the overhead door. The partition element includes a first fixing portion and a second fixing portion fixed to the lower end of the door body separated in the inward and outward directions, a first portion extending downward from the first fixing portion, and a lower portion from the second fixing portion. It is integrally formed from the second part extending to the door and the substantially horizontal third part connecting the lower end side of the first part and the lower end side of the second part.
When the bottom element lands on the floor, the third portion of the partition element comes into close contact with the third portion of the bottom element, and a space of three chambers is formed in the hollow portion adjacent in the inward and outward directions.
The heat insulating structure at the lower end of the overhead door according to claim 1. The partition element is one or more fins fixed to the lower end of the door body.
When the bottom element lands on the floor, the lower end portions of the one or more fins come into close contact with the third portion of the bottom element, and a plurality of spaces are formed in the hollow portion adjacent in the inward and outward directions.
The heat insulating structure at the lower end of the overhead door according to claim 1. The partition element is composed of a first fin and a second fin fixed to the lower end of the door body so as to be separated from each other in the inward and outward directions, and the first fin is formed of the door body at the first fixing portion at the upper end. It is fixed to the lower end, and the second fin is fixed to the lower end of the door body at the second fixing portion at the upper end.
When the bottom element has landed, the lower end portion of the first fin and the lower end portion of the second fin are in close contact with the third portion of the bottom element, respectively, and are adjacent to each other in the hollow portion in the inward and outward directions. A space of 3 rooms is formed,
The heat insulating structure at the lower end of the overhead door according to claim 3. At the lower end of the door body, a retainer for fixing the first fixing portion and the second fixing portion of the bottom element is provided.
On the lower surface of the retainer, fixed portions to which the first fixing portion and the second fixing portion of the partition element are fixed are formed so as to be separated in the inward and outward directions.
The heat insulating structure at the lower end of the overhead door according to any one of claims 2 and 4. When the opening is fully closed, the first surface portion of the door body is located on the indoor side and the second surface portion is located on the outdoor side, the first portion of the bottom element is on the indoor side, and the second portion is on the outdoor side. The second part is located so as to be a perpendicular surface substantially flush with the second surface portion on the outside of the door body.
When the third portion of the bottom element has landed, the second surface portion of the door body is in close contact with the skeleton, and the second portion of the bottom element is attached to the skeleton at least in half or more in the height direction. In close contact,
The heat insulating structure at the lower end of the overhead door according to any one of claims 1 to 5. The skeleton is provided with an airtight material extending in the height direction so that both ends in the width direction of the second surface of the door body come into contact with each other when the opening is fully closed.
The lower end of the airtight material reaches the floor surface, and when the third portion of the bottom element lands on the floor, the second portion of the bottom element comes into close contact with the airtight material provided on the skeleton.
The heat insulating structure at the lower end of the overhead door according to claim 6.

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