JP2018204276A - Airtight structure of opening frame - Google Patents

Abstract

To provide an airtight structure of an opening frame which can improve airtightness of a surface orthogonal to a joint surface between joint portions of vertical and horizontal frames.SOLUTION: In a rectangular opening frame 3 formed by corner members 10 connecting upper and lower horizontal frames 3b and left and right vertical frames 3a, the horizontal frames and the vertical frames are each provided with a hollow portion 3h of the same shape in a longitudinal direction and a bonding surface 3i of about 45 degree inclination is provided at an end portion in the longitudinal direction. The corner member 10 is formed in a substantially L shape having a first insertion portion 11 to be inserted into the hollow portion provided in the horizontal frame and a second insertion portion 12 to be inserted into the hollow portion provided in the vertical frame, on both surfaces of corner portions 13 of the first and second insertion portions, recessed portions 14a and 14b are provided along boundaries of the first and second insertion portions, with the caulking material 30 filled in a concave portion, the first and second insertion portions are inserted into the hollow portions of the horizontal frame and the vertical frame for causing the caulking material to be in close contact with a surface orthogonal to a joining surface between the horizontal frame and the vertical frame.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an airtight structure of an opening frame that forms an entrance of a cabinet such as a prefabricated refrigerator, freezer, storage, or clean room.

  Conventionally, entrances and exits have been provided in cabinets such as prefabricated refrigerators, freezers, storages, and clean rooms that are surrounded by panels. And the opening frame itself must be kept airtight.

  As a conventional airtight structure of an opening frame, a corner block that connects a vertical gutter (vertical frame) and a horizontal gutter (horizontal frame), a corner watertight material that is fixed to the corner block and forms a corner of the outer periphery of the open frame, The structure which has the corner | angular member formed by is known (for example, refer patent document 1).

  In this case, the corner block has an insertion portion provided on the surface corresponding to the radius of the block main body forming a quadrant circle, and the insertion portion is provided in the vertical gutter (vertical frame) and horizontal gutter (horizontal frame). The vertical gutter (vertical frame) and horizontal gutter (horizontal frame) are connected to each other.

  Further, as another airtight structure, a substantially L-shaped corner block having first and second insertion portions inserted into the hollow portions of the upper and lower and left and right ridges (vertical frame, horizontal frame) to be connected, A structure is known that has a shape that substantially conforms to the cross-sectional shape of (vertical frame, horizontal frame) and that has a sealing material interposed between the joining surfaces of the flanges (vertical frame / horizontal frame) (for example, Patent Document 2). reference).

JP-A-6-73958 (FIGS. 2 and 5) Japanese Patent Laying-Open No. 2014-20153 (FIGS. 6, 8, and 12)

  However, in the structure described in Patent Document 1, a corner block is interposed between a vertical gutter (vertical frame) and a horizontal gutter (horizontal frame). It is necessary to seal two places of the joint surface of the surface and the horizontal gutter (horizontal frame), and there is a concern that the airtightness of the surface orthogonal to the joint surface is impaired.

  Moreover, in the structure of patent document 1, since a corner | angular part member is formed with two members, a corner block and a corner watertight material, there exists a possibility that a structural member may increase and construction may become troublesome.

In the structure described in Patent Document 2, the vertical frame and the horizontal frame are connected by a substantially L-shaped corner block. Therefore, compared with the structure described in Patent Document 1, one joint portion between the vertical frame and the horizontal frame is provided. While being able to seal, reduction of a structural member can be aimed at.
However, even in the structure described in Patent Document 2, since the sealing material is interposed between the joining surfaces of the flanges (vertical frame / horizontal frame), there is a concern that the airtightness of the surface orthogonal to the joining surface may be impaired.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an airtight structure of an opening frame capable of improving the airtightness of the surface orthogonal to the joint surface of the joint portion of the vertical frame and the horizontal frame. And

  In order to solve the above-described problems, the present invention is an airtight structure of a rectangular opening frame formed by a corner member that connects an upper and lower horizontal frame and a left and right vertical frame, and the horizontal frame and the vertical frame are In addition, a hollow portion having the same shape is provided in the longitudinal direction, and a joining surface of approximately 45 degrees is provided at an end portion in the longitudinal direction, and the corner material is inserted into the hollow portion provided in the horizontal frame. It is formed in a substantially L shape having a first insertion portion and a second insertion portion inserted into the hollow portion provided in the vertical frame, and both corner portions of the first and second insertion portions are formed. A concave portion is provided on the surface along the boundary between the first and second insertion portions, and the first and second insertion portions are arranged in a state where a caulking material is filled in the concave portion or a packing is fitted. Insert into the hollow part of the horizontal frame and vertical frame, and orthogonal to the joint surface of the horizontal frame and vertical frame The caulking material or packing is in close contact with the surface (claims 1 and 2).

  By comprising in this way, a caulking material or packing can be stuck on both surfaces orthogonal to the joint surface of the horizontal frame and vertical frame which comprise an opening frame.

  When the caulking material is filled in the concave portion, considering that the caulking material is a viscous paste, a groove portion shallower than the depth of the concave portion is provided in the outer region of the opening edge of the concave portion, and the groove portion It is preferable to hold surplus coking material (claim 3).

  By comprising in this way, the excess part of the caulking material with which it fills in a recessed part is hold | maintained by a groove part, and the protrusion of the caulking material to the exterior can be prevented. In addition, the adhesion area of the caulking material can be increased.

  According to this invention, since it is configured as described above, the following remarkable effects can be obtained.

  (1) Since the caulking material or the packing can be adhered to both surfaces orthogonal to the joining surfaces of the horizontal frame and the vertical frame, the airtightness of the surface orthogonal to the joining surface of the joining portion of the vertical frame and the horizontal frame can be improved. .

  (2) When a caulking material is used, the excess portion of the caulking material filled in the recess is held by the groove, so that the caulking material is prevented from protruding to the outside and the appearance of the opening frame is improved. Can do. Moreover, since the contact | adherence area of a caulking material can be increased, the improvement of the airtightness of the junction part of a vertical frame and a horizontal frame can be aimed at further.

It is a front view which shows an example of the opening / closing door which has the airtight structure of the opening frame which concerns on this invention. It is a principal part enlarged front view which shows the I section of FIG. It is sectional drawing (a) in alignment with the II-II line of FIG. 2, the expanded sectional view of the III section of (a), (b), and the IV section expanded sectional view of (a). It is the front perspective view (a) and back perspective view (b) of the corner material in this invention. It is a front view of the said corner material. It is a rear view of the said corner material. It is a top view of the said corner material. It is a bottom view of the corner material. It is a left view of the said corner material. It is a right view of the said corner material. It is an end elevation which follows the VV line of Drawing 5A. It is sectional drawing which follows the VI-VI line of FIG. 5C. It is sectional drawing which follows the VII-VII line of FIG. 5C. It is sectional drawing which follows the VIII-VIII line of FIG. It is an expanded sectional view which follows the front view (a) of the corner material of 2nd Embodiment of this invention, and the IX-IX line of (a). It is an expanded sectional view in alignment with the XX line of the front view (a) and (a) of the corner material of 3rd Embodiment of this invention.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail based on an accompanying drawing. Here, the case where the airtight structure which concerns on this invention is applied to the opening part of a prefabricated refrigerator is demonstrated.

  The refrigerator is formed by a cabinet (not shown) surrounded by a heat-insulating wall panel 1 and an opening / closing frame 3 (hereinafter referred to as a door frame 3) provided on one side of the cabinet. And an opening / closing opening 4 and a pair of openable / closable door bodies 2 for opening / closing the opening 4.

  The door body 2 is formed of a pair of aluminum alloy surface plates 2a, a synthetic resin frame material 2b interposed between the side portions of the surface plates 2a, both surface plates 2a and the frame material 2b. It is mainly composed of a foaming heat insulating material 2c such as foamed polyurethane filled in the space (see FIG. 9).

  A summing member 5 is provided in the vertical direction of the frame member 2b on the summoning side of the door body 2. Further, the base end of the door body 2 opposite to the calling side is pivotally attached to the vertical frame 3a of the door frame 3 via the upper hinge 6a and the lower hinge 6b, and the door body 2 can be opened and closed by turning. It has become. Opening / closing handles 7 are attached to both sides of the door 2 on the calling side.

  The wall panel 1 is formed of a pair of aluminum alloy surface plates 1a, a synthetic resin frame member 1b interposed between the side portions of the surface plates 1a, both surface plates 1a, and a frame member 1b. It is mainly composed of a foaming heat insulating material 1c such as foamed polyurethane filled in the space (see FIG. 9).

The door frame 3 is formed in a rectangular frame shape by a corner member 10 that connects the upper and lower horizontal frames 3b and the left and right vertical frames 3a.
In this case, the horizontal frame 3b and the vertical frame 3a are formed in the same shape, the hollow portion 3h is provided in the longitudinal direction, and the joining surface 3i of approximately 45 degrees is provided at the end portion in the longitudinal direction. .

  As shown in FIGS. 3 and 9, the horizontal frame 3b and the vertical frame 3a have a hollow portion 3h by bending L-shaped leg pieces 3d on both sides of the flat surface portion 3c forming the opening 4 of the door frame 3. Formed by an aluminum alloy extruded profile having a frame main body 3e having a substantially channel cross section and a packing fitting groove 3g having an inner side opened through a step 3f on one side of a flat surface portion 3c of the frame main body 3e. ing.

  The vertical frame 3 a is fixed to the wall panel 1 by screwing a fixing screw 8 penetrating the flat surface portion 3 c to an outer frame 1 d having a U-shaped cross section attached to the frame member 1 b of the wall panel 1. The exterior frame 1d is formed of an extruded shape made of an aluminum alloy in the same manner as the vertical frame.

  For example, a frame packing 20 made of EPDM sponge is fitted into the packing fitting groove 3g. In this case, the frame packing 20 has a hollow cylindrical portion 21 and a hollow rectangular portion 22 provided continuously, and two fin portions 23 project from both sides of the hollow rectangular portion 22 (see FIG. 9).

  The frame packing 20 is fitted into the packing fitting groove 3g with the hollow rectangular portion 22 inserted into the packing fitting groove 3g via the backup material 24 and the fin portion 23 pressed against the packing fitting groove 3g. The cylindrical portion 21 is provided along the vertical frame 3a in a state of protruding from the packing fitting groove 3g. The airtightness of the door frame 3 and the door body 2 is maintained in a state where the hollow cylindrical portion 21 protruding from the packing fitting groove 3g is in close contact with the frame member 2b of the door body 2.

  The corner member 10 is made of synthetic resin such as ABS resin, for example, and as shown in FIGS. 2 to 8, the first insertion portion 11 is inserted into the hollow portion 3h provided in the horizontal frame 3b. And a substantially L-shape having a second insertion portion 12 inserted into a hollow portion 3h provided in the vertical frame 3a. In addition, elongated hole-like recesses 14a and 14b along the boundary between the first and second insertion portions 11 and 12 are provided on both surfaces of the corner portion 13 of the first and second insertion portions 11 and 12, respectively. In addition, the caulking material 30 in the form of a viscous paste is formed in the recesses 14a and 14b so as to be filled.

The first and second insertion portions 11 and 12 include a straight piece 15, side pieces 16 a and 16 b erected orthogonally from both ends of the straight piece 15, and one side piece 16 a side of the straight piece 15. A ridge piece 17 is formed on the lower surface, and a recess 14a is formed on the surface of the ridge piece 17 connected to the side piece 16a of the corner 13 and the side piece 16a, and a recess 14b is formed on the surface of the side piece 16b. Is formed. In this case, since the concave portion 14a is provided on the surface of the side piece 16a and the protrusion piece 17 connected to the side piece 16a, the concave portion 14a is formed longer than the concave portion 14b provided in the side piece 16b.
Two mounting holes 18 are arranged in parallel at the front end side of the straight piece 15.

  The corner member 10 formed as described above is inserted in a state where the first and second insertion portions 11 and 12 are in sliding contact with the horizontal frame 3b and the hollow portion 3h of the vertical frame 3a. That is, the straight piece 15 is slidably contacted with the horizontal surface 3c of the horizontal frame 3b and the vertical frame 3a, and the side pieces 16a and 16b are slidably contacted with the inner surfaces of the L-shaped leg pieces 3d of the horizontal frame 3b and the vertical frame 3a. And the protrusion piece 17 is inserted in the state slidably contacted with the inner surface of the step part 3f of the horizontal frame 3b and the vertical frame 3a.

  By forming the first and second insertion portions 11 and 12 as described above, the horizontal frame 3b and the vertical frame 3a can be easily and reliably inserted into the hollow portion 3h.

  When framing the door frame 3, the corner member 10 is inserted into the hollow portion 3h of the horizontal frame 3b and the vertical frame 3a with the caulking material 30 filled in the recesses 14a and 14b. In this state, a fixing screw 40 penetrating through a through hole (not shown) provided in the flat surface portion 3c is inserted into the mounting hole 18, and a nut 41 is screwed into a protruding portion of the fixing screw 40 to thereby connect the horizontal frame 3b. The corner material 10 is fixed to the vertical frame 3a.

  As for the door frame 3 framed as mentioned above, the caulking material 30 is closely_contact | adhered to both surfaces orthogonal to the joint surface 3i of the horizontal frame 3b and the vertical frame 3a. Therefore, it is possible to improve the airtightness of the joint portion between the four horizontal frames 3b and the vertical frame 3a of the door frame 3.

  FIG. 10 shows a corner member 10A of the second embodiment. 10A of corner materials of 2nd Embodiment are the cases where the groove part 19 shallower than the depth of the recessed part 14a (14b) is provided in the outer area | region of the opening edge of the recessed part 14a (14b), and the excess caulking material can be hold | maintained at the groove part 19. is there.

  According to 2nd Embodiment, since the excess part of the caulking material 30 with which it fills in the recessed part 14a (14b) is hold | maintained by the groove part 19, the protrusion of the caulking material 30 to the exterior is prevented, and the appearance of the door frame 3 is shown. Can be good. Moreover, since the contact | adherence area of the caulking material 30 can be increased, the improvement of the airtightness of the junction part of the vertical frame 3a and the horizontal frame 3b can be aimed at further.

FIG. 11 shows a corner member 10B of the third embodiment. The corner member 10B of the third embodiment is a case where a packing 31 such as EPDA rubber is fitted in the recess 14a (14b) instead of the caulking member 30.
In this case, as shown in FIG. 11B, the recesses 14a (14b) are formed in a narrow opening shape, so that the packing 31 can be securely fitted.

  According to the third embodiment, the first and second insertion portions 11 and 12 are inserted into the hollow portions 3h of the horizontal frame 3b and the vertical frame 3a, and are orthogonal to the joint surface 3i of the horizontal frame 3b and the vertical frame 3a. Since the packing 31 can be brought into close contact with the surface to be sealed, the airtightness of the surface orthogonal to the joint surface 3i of the joint portion between the vertical frame 3a and the horizontal frame 3b can be improved.

  In addition, although the said embodiment demonstrated the case where the airtight structure which concerns on this invention was applied to a prefabricated refrigerator, the airtight structure which concerns on this invention is applicable also to freezers other than a refrigerator, a storehouse, and a clean room.

3 Door frame (opening frame)
3a Vertical frame 3b Horizontal frame 3h Hollow part 3i Joint surface 10, 10A, 10B Corner material 11 First insertion part 12 Second insertion part 13 Corner part 14a, 14b Recess 19 Groove part 30 Caulking material 31 Packing

Claims (3)

An airtight structure of a rectangular opening frame formed by a corner material connecting the upper and lower horizontal frames and the left and right vertical frames,
The horizontal frame and the vertical frame are each provided with a hollow portion having the same shape in the longitudinal direction, and a bonding surface of approximately 45 degrees is provided at an end portion in the longitudinal direction.
The corner member has a substantially L-shape having a first insertion portion inserted into the hollow portion provided in the horizontal frame and a second insertion portion inserted into the hollow portion provided in the vertical frame. Formed on the both surfaces of the corners of the first and second insertion portions, and provided with a recess along the boundary of the first and second insertion portions,
With the caulking material filled in the recess, the first and second insertion portions are inserted into the hollow portions of the horizontal frame and the vertical frame, and the surface is perpendicular to the joining surface of the horizontal frame and the vertical frame. The above caulking material is closely attached.
An airtight structure of the opening frame characterized by that. An airtight structure of a rectangular opening frame formed by a corner material connecting the upper and lower horizontal frames and the left and right vertical frames,
The horizontal frame and the vertical frame are each provided with a hollow portion having the same shape in the longitudinal direction, and a bonding surface of approximately 45 degrees is provided at an end portion in the longitudinal direction.
The corner member has a substantially L-shape having a first insertion portion inserted into the hollow portion provided in the horizontal frame and a second insertion portion inserted into the hollow portion provided in the vertical frame. Formed on the both surfaces of the corners of the first and second insertion portions, and provided with a recess along the boundary of the first and second insertion portions,
With the packing fitted in the recess, the first and second insertion portions are inserted into the hollow portions of the horizontal frame and the vertical frame, and the surface is perpendicular to the joining surface of the horizontal frame and the vertical frame. The above packing is in close contact,
An airtight structure of the opening frame characterized by that. In the airtight structure of the opening frame according to claim 1,
An airtight structure of an opening frame, wherein a groove portion shallower than the depth of the recessed portion is provided in an outer region of an opening edge of the recessed portion, and an excess coking material is held in the groove portion.

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