JP3167587B2 - Thermal insulation panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating panel constituting a prefabricated structure such as a prefabricated refrigerator-freezer.

[0002]

2. Description of the Related Art A heat insulating panel of this type is described in, for example, Japanese Utility Model Publication No. Hei 6-17528 (B32B3 / 02). In this heat insulating panel, a pair of face materials are opposed to each other, and a frame material is arranged at each end along each side of the face materials. Then, the heat insulating material is injected and foamed into an internal space between the pair of face materials. It has been manufactured. By the way, the frame material is provided along each side of the face material in this way, but at the connection part of two sides adjacent to each other, that is, at the corner, the adjacent frame materials are connected so that the heat insulating material does not leak out. Need to connect.
Therefore, in the heat insulating panel described in Japanese Utility Model Publication No. 6-17528, large corner pieces are arranged at the corners. A pair of engaging portions are formed in the corner piece, and the ends of the respective frame members are firmly fitted into the engaging portions so that the heat insulating material does not leak.

[0003]

By the way, this corner piece can prevent leakage of the heat insulating material. However, since the connection portion with the frame material has a U-shaped cross section, the corner piece can be injected. It is difficult to remove air during foaming. Therefore, an air vent hole is formed in the corner piece in a complicated manner. Therefore, the mold for manufacturing the corner piece becomes complicated, and the cost for manufacturing the mold increases.

In order to assemble the face material, the frame material, and the corner piece, first, a frame material having a U-shaped cross section is fitted into the engaging portion of the corner piece to form a large rectangular frame. It is necessary to engage the end of the face material with this frame. Therefore, it is necessary to handle a large frame in which a plurality of frame members are integrated, and the work is difficult. As a result, time and labor are required for the assembling work.

Further, the frame material is cut at a substantially right angle with respect to the longitudinal direction, and at a portion where the frame material is connected, an end face of the frame material is arranged at a substantially right angle with respect to an end face of an adjacent frame material. I have. The corner piece disposed at the corner has a rectangular parallelepiped shape in which two adjacent surfaces are open, and includes an engagement portion projecting outward from each of the two open surfaces. The ends of the frame material are fitted into the pair of engagement portions, respectively. Therefore, in the manufactured heat insulating panel, the corner pieces are exposed in a rectangular parallelepiped shape. As a result, the corner pieces are conspicuous and the appearance becomes unsightly.

Accordingly, the present applicant has filed Japanese Patent Application No. 7-5014.
No. 8 proposed a heat insulating panel using a substantially L-shaped corner piece having a corner portion and an overlap portion instead of a U-shaped corner piece. The use of the L-shaped corner piece facilitates air bleeding during the injection and foaming of the heat insulating material and the work of attaching the corner piece to the frame material. However, this corner piece hardly has a place to be attached at the time of attachment, and the attachment work is difficult. Further, after the attachment, the corner piece may come off from a predetermined position, and a heat insulating material such as urethane may leak.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a heat insulating panel using an L-shaped corner piece, which can prevent the corner piece from coming off. Further, it is a secondary object to provide a heat insulating panel that can easily perform a mounting work of a corner piece.

[0008]

In order to achieve the above object, a corner piece (C) provided on a heat insulating panel (1, 4) according to the present invention is provided with a pair of L frame members (L). A corner (21) covering the end of (13), and a pair of L
An overlap portion (23) covering the end of the joint portion (14) of the frame material, and a protrusion (25d) projecting from the overlap portion in the thickness direction of the heat insulating panel are provided. The protrusion extends to the vicinity of the face member (10) facing the inner surface of the overlap portion. Therefore, the tip of the protruding portion is in contact with or close to the inner surface of the face material.

An opening (25e) may be formed between the projection and the corner.

[0010]

[Operation] Attach the corner piece to the L frame material by grasping the protrusion of the corner piece. When the heat insulating panel is assembled, the projecting portion extends in the thickness direction of the heat insulating panel, the projecting portion acts as a support member for the overlapping portion, and the overlapping portion of the corner piece forms the inside of the heat insulating panel. Is prevented from being displaced.

[0011]

[Embodiment] Next, an embodiment of a heat insulating panel according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a prefabricated refrigerator-freezer assembled with heat insulating panels. FIG. 2 is an enlarged perspective view of a main part of the heat insulation panel, in which a part of a face material is cut away. FIG. 3 is a plan view of FIG. FIG. 4 is a sectional view of FIG. FIG. 5 is an exploded plan view of a face material, a frame material, and a corner piece. FIG. 6 is a sectional view taken along line VI-VI of FIG.

First, a prefabricated refrigerator-freezer assembled using heat insulating panels will be described. In FIG. 1, a prefabricated refrigerator having a prefabricated structure is constituted by connecting a plurality of heat insulating panels 1 which are assembled panels. There are a ceiling panel 3 constituting a ceiling panel of the refrigerator and a floor panel 4 constituting a floor panel. Further, a heat insulating door 5 is attached to the front of the prefabricated refrigerator to be freely opened and closed.

In FIG. 2, a heat insulating panel 1 includes a pair of upper and lower substantially rectangular face members 10 and a frame member 11 disposed at an end.
And Then, the heat insulating material 12 is injected and foamed and filled in the internal space between the pair of face materials 10. The frame material 11 made of PVC or the like is disposed to be elongated along one side of the face material 10, and the frame material 11 has a convex frame material, a concave frame material, and an L frame having different cross-sectional shapes. There are three types of frame materials L. The heat insulating panel 1 shown in FIG. 2 is a floor panel 4, and the right and left frame members 11 are L-shaped.
A frame material L is used. In addition, other frame material 1 not shown
1, a frame material of an appropriate type is adopted.

As shown in FIGS. 2 and 4, the L frame member L has a substantially L-shaped cross section, and has an end surface portion 13 covering the end surface of the floor panel 4 and a substantially right angle to the end surface portion 13. And a connecting portion 14 that covers an end of one surface of the floor panel 4. A corrugation is formed on the outer surface of the end surface portion 13, and an engagement portion 13 a having an L-shaped cross section protrudes from the inner surface of the lower end portion. This engaging part 1
Reference numeral 3a extends in the longitudinal direction of the L frame member L, and the lower end, that is, the end of the face member 10 on the outer side of the warehouse engages as shown in FIG. On the other hand, a pair of concave grooves 14a for connecting adjacent heat insulating panels 1 are formed in the connecting portion 14 of the L frame member L so as to extend in the longitudinal direction. An engaging portion 14b with which the end of the face material 10 on the upper side, that is, the inner side of the refrigerator, engages with the end of the connecting portion 14 in the width direction, and extends in the longitudinal direction of the L frame material L. When the L frame members L are joined at an angle of approximately 90 °, the end face in the longitudinal direction of the L frame member L is inclined with respect to the longitudinal direction as shown in FIG. a
For example, it is cut at approximately 45 °.

4 and 5, the face material 10
Has a slightly inclined L-shape so as to engage with the engaging portions 13a and 14b of the L frame material L. That is, the inclined portion 10b is formed by bending from the end of the large substantially rectangular flat portion 10a of the face material 10. And
A bent portion 10c is formed, which is further bent from the tip of the inclined portion 10b and is substantially parallel to the flat portion 10a. However, at the four corners of the face material 10,
The bent portion 10c at the tip is not cut and formed. Also, at the corner of the lower face material 10, the inclined portion 1
0b is formed slightly shorter.

In FIG. 2 and FIG.
The frame member L is disposed so as to have an angle of about 90 ° with respect to the left L frame member L. Then, at the corners of the floor panel 4, the longitudinal end surface of the right L frame member L is disposed substantially parallel to the longitudinal end surface of the left L frame member L, and has a slight interval. They are arranged close to each other. A corner piece C is provided at a position where the end face of the right L frame material L and the end face of the left L frame material L face each other. In addition,
In FIG. 3, the exposed portion of the corner piece C is hatched so that it can be easily distinguished from the L frame material L.

In FIGS. 2 to 5, the corner piece C is integrally formed of synthetic resin, and has a corner portion 21 for covering the outer surface of the longitudinal end of the end surface portion 13 of the L frame material L on both sides, and a corner portion 21 for both sides. Overlap portion 23 that covers the inner surface of the longitudinal end of the connection portion 14 of the L frame material L, and the connection portion 2 that connects the corner portion 21 and the overlap portion 23.
It consists of five. The corner portion 21 has an L-shaped cross section, and for example, a first plate portion 21a that covers the end surface portion 13 of the right L frame material L and a second plate portion 21b that covers the end surface portion 13 of the other L frame material L, for example. It consists of And the second plate portion 2
1b has substantially the same shape as the first plate portion 21a which is a rectangular flat plate, and is disposed substantially perpendicular to the first plate portion 21a.

The connecting portion 25 of the corner piece C is
A first connection portion 25 a is joined to the inner surface of the corner of the corner portion 21, and a second connection portion 25 b is connected to the inner surface of the overlap portion 23. The first connecting portion 25a is approximately 45 ° with the first plate portion 21a of the corner portion 21.
And similarly, the second
The plate portion 21b is also arranged at an angle of approximately 45 °. In FIG. 4, a cut 25c is formed at the lower end of the first connecting portion 25a, and the inclined portion 10b at the corner of the lower face material 10 is fitted. Also, the first connecting portion 2 of the connecting portion 25
For example, one end face of the L frame material L on the right side is opposed to one face of 5a, and the end face of the other L frame material L is opposed to the other face of the connecting portion 25. On the other hand, as shown in FIG.
Are arranged substantially at right angles to the inner surface of the overlap portion 23. A part of the second connecting portion 25b, for example, the first connecting portion 2
The end on the side away from 5a protrudes toward the lower surface material 10, and a protruding portion 25d is formed. This protruding portion 25d protrudes from the inner surface of the overlap portion 23,
The lower end reaches the inner surface of the lower face plate 10. Also,
A notch 25e as an opening is formed between the protruding portion 25d and the first connecting portion 25a. And the connecting part 25
Connects the corner portion 21 and the overlap portion 23, and connects the corner portion 21 and the overlap portion 23.
Has been reinforced.

Further, the overlap portion 23 of the corner piece C is arranged with a space from the inner surface of the corner portion 21, and the space is large enough for the engaging portion 13a of the L frame material L to pass through. That is, it is formed slightly larger than the engaging portion 13a. This overlap portion 23
As shown in FIG. 2, 3, 4, 5, or 6, one of the first contact portions 2 is in contact with the inner surface of the right L frame member L, for example.
3a and the second contact portion 2 that contacts the inner surface of the other L frame material L
3b and an elongated ridge 23c formed between the first contact portion 23a and the second contact portion 23b. The upper surfaces of the first contact portion 23a and the second contact portion 23b, that is, the surfaces that come into contact with the joint portion 14 of the L frame material L,
A pair of concave grooves 23d abutting on the concave grooves 14a of the coupling portion 14 is formed corresponding to the shape of. In addition, a concave portion 23e that contacts the inner surface of the engaging portion 14b of the L frame member L is formed. Further, the first contact portion 23a and the second contact portion 23b
Each of the upper surfaces has a narrow groove 23f for venting air, and this groove 23f extends from a ridge 23c, which is a central portion of the overlap portion 23, to a leading end in the width direction of the overlap portion 23. And the corner piece C is L frame material L
And the inner surface of the L frame member L, an air circulating portion for venting air is formed.

The ridge 23c of the overlap portion 23
Is formed with a protrusion amount substantially the same as the thickness of the connecting portion 14 of the L frame member L from the tip of the corner portion 21 side of the overlap portion 23 to just before the concave portion 23e. On the other hand, for example, the end face of the connecting portion 14 of the right L frame member L faces the other side surface of the ridge 23c, and the end face of the connecting portion 14 of the other L frame member L faces the other side surface.

When the floor panel 4 is manufactured,
The surface material 10 on the upper side, that is, the inside of the refrigerator, is placed on a work table or floor with the inner surface of the surface material 10 facing upward. And
The engaging portions 14b of the connecting portions 14 of the L frame members L are respectively engaged with ends of two adjacent sides of the face member 10. An appropriate type of frame member 11 is engaged with the end of the remaining side. Next, in a portion where the pair of L frame members L are close to each other, that is, at a corner, the corner piece C is inserted from above into the end portions of the pair of L frame members L with the overlap portion 23 facing down.
This insertion work is performed by the protrusion 25d of the corner piece C.
So that the end surface portion 13 of the L frame material L fits between the corner portion 21 and the overlap portion 23 of the corner piece C. Then, the connecting portion 25 of the corner piece C is inserted into a gap between the end surfaces 13 of the pair of L frame members L. Therefore, the thickness of the plate-shaped connecting portion 25 is formed slightly smaller than the gap between the end surfaces 13 of the pair of L frame members L. The corner piece C is made of L frame material L
, The end face of the joint portion 14 of the L frame material L faces the side face of the ridge 23c of the corner piece C, while
The end face of the end face part 13 of the frame material L faces the surface of the connecting part 25 and is positioned. Then, from above, the upper surface, that is, the outer surface of the surface material 10 is moved to the engagement portion 13a of the L frame material L.
It is placed so as to engage with. At this time, the protrusion 25
The inner surface of the face material 10 on the outside of the refrigerator contacts the tip of d.

The heat insulating material 12 is injected into the interior of the floor panel 4 assembled in this manner and foamed. The flow of the heat insulating material 12 is blocked by the protruding portion 25d.
e, the heat insulating material 12 has the notch 25
e, it can flow from one surface side of the protruding portion 25d to the other surface side, and is uniformly filled in the heat insulating panel 1. Then, the air inside the floor panel 4 is moved from the longitudinal end of the L frame L to the floor panel through the space between the end of the face material 10 and the engaging portions 13a and 14b of the L frame L. 4
The air is released outside and air is removed. In the state where the corner piece C is attached to the L frame material L,
The narrow groove 23f for air release of the overlap portion 23 of the corner piece C faces the inner surface of the connecting portion 14 of the L frame material L. The inner surface of the coupling portion 14 is formed flat at a portion where the groove 23f faces, and the groove 23f
As a result, a space, that is, an air circulation portion, is formed between the overlap portion 23 and the connection portion 14, and the inside and the outside of the heat insulating panel 1 as the floor panel 4 are communicated. Then, air is also vented from this air circulation unit. Further, at the time of injection foaming of the heat insulating material 12, the end face portion 1 of the L frame material L
3 is pressed outward. However, in the corner piece C, the concave portion 23d of the overlapping portion 23 has the L frame material L
And is positioned by engaging with the inner surface of the concave groove 14a, and the corner portion 21 of the corner piece C is not easily displaced. Therefore, the end face portion 13 of the L frame material L is positioned and supported by the corner portion 21 of the corner piece C, and the deformation to the outside is reduced. Further, a protruding portion 25d of the corner piece C extends in the thickness direction of the heat insulating panel 1, and the protruding portion 25d prevents the overlapping portion 23 from being displaced inside the heat insulating panel 1.

The L of the floor panel 4 thus constructed is
The side panel 2 which is the adjacent heat insulating panel 1 is connected to the connecting portion 14 of the frame material L. And the convex part of the convex frame material of the side plate panel 2 fits into the concave groove 14a of the coupling part 14 of the L frame material L.

As described above, in the embodiment, the corner portion 21 and the overlap portion 23 of the corner piece C are arranged with a space therebetween, and the connection portion 25 connects the corner portion 21 and the overlap portion 23. are doing. The connecting portion 25 has a size that can be inserted into a gap between the ends of the pair of L frame members L. The end surfaces 13 of the pair of L frame members L are fitted in a space between the corner portion 21 and the overlap portion 23. When the end faces 13 of the pair of L frame members L are fitted, the corner piece C
The size of the space between the corner portion 21 and the overlap portion 23 is determined so that the corner portion 21 and the overlap portion 23 can be moved and attached to and detached from the frame material L. That is, the corner portion 21 and the overlap portion 23
Is set to a size that allows the engaging portion 13a of the end face portion 13 to pass through. Therefore, the corner piece C can be fitted into the ends of the pair of L frame members L in a state where the pair of L frame members L are engaged with the end portions of the face member 10. Therefore, when assembling the heat insulating panel 1, the frame material 11, the face material 1
It is not necessary to move the parts such as 0 in a connected state, and the parts can be moved individually. As a result, the manufacture of the heat insulating panel 1 can be easily performed.

Further, since the ends of the pair of L frame members L are respectively positioned by the corner pieces C, the positions of the ends of both L frame members L are less likely to shift. Therefore,
Insulation material leakage can be reduced. Also, the appearance becomes good.

The ends of the pair of L frame members L are cut obliquely so as to be opposed to each other and to be close to each other. Moreover,
Since the overlapping portion 23 of the corner piece C is in contact with the inner surface of the L frame material L, the exposed area of the overlapping portion 23 of the corner piece C can be reduced. Therefore, the appearance is improved.

The projection 25d of the corner piece C
Project from the inner surface of the overlap portion 23 in the thickness direction of the heat insulating panel 1 and reach the face material 10 facing the overlap portion 23, that is, the inner surface of the face material on the outside of the refrigerator. Displacement in the direction away from the inner surface of the coupling portion 14 of L, that is, downward in FIGS. 2 and 4, is prevented by the protruding portion 25d. as a result,
It is possible to prevent the heat insulating material 12 from leaking from the gap between the overlapping portion 23 and the connecting portion 14.

Further, since the notch 25e is provided, the projection 25
d is easy to grasp. When the heat insulating material 12 is injected and foamed, the heat insulating material 12 is connected to the heat insulating panel 1 through the notch 25e.
The inside can be uniformly filled.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the present invention described in the appended claims. It is possible to make changes. Modified embodiments of the present invention will be exemplified below.

(1) In the embodiment, a pair of concave grooves 14a are formed in the L frame material L, but the number of concave grooves may be one or three or more. Further, if the adjacent heat insulating panels 1 are connected, the shape of the connecting portion 14 of the L frame material L can be appropriately changed, and an elongated convex portion can be formed instead of the concave groove 14a. In this case, the concave groove of the frame material of the heat insulating panel adjacent to the convex portion is fitted.

(2) In the embodiment, the frame material is made of PVC, but it can be made of another material such as aluminum. (3) In the embodiment, the floor panel 4 is used. However, the ceiling panel 3 has the same configuration and is used upside down. Further, it can be used as the side panel 2.

(4) In the embodiment, the side where the connecting portion 14 of the L frame member L is provided is described above,
The direction can be changed appropriately. Note that, in the heat insulating panel 1, the surface on the side where the connecting portion 14 of the L frame material L is provided is the inner surface of the heat insulating panel 1. Therefore, the surface on the side where the lower surface material 10 is arranged in the embodiment is the outer surface of the refrigerator.

(5) In the embodiment, a cutout 25e as an opening is formed in the corner piece C between the projecting portion 25d and the first connecting portion 25a, that is, between the corner portion 21 and the projecting portion 25d. However, in FIG.
By connecting the lower end of the connecting portion 25a and the lower end of the protruding portion 25d, the opening can be formed by a hole.

(6) At the tip of the projection 25d, the projection 25
It is also possible to provide an abutment plate formed substantially at right angles to the projecting direction of d, that is, substantially parallel to the face material 10, and this abutment plate can abut on the inner surface of the face material 10 outside the warehouse. . In the embodiment, the protruding portion 25d has a flat plate shape, but may have a rod shape. (7) In the embodiment, the protruding portion 25 d is
5b, it may be formed so as to protrude from the overlap portion 23 at a location apart from the second connecting portion 25b. Thus, the protrusion 25
The location where d is formed can be changed as appropriate. Further, a plurality of protruding portions 25d can be formed.

[0035]

The corner piece according to the present invention has an overlap portion, a corner portion, and a projecting portion. The protruding portion protrudes from the overlap portion in the thickness direction of the heat insulating panel, and extends to the vicinity of the face member facing the inner surface of the overlap portion. Therefore, corner pieces,
After assembling the L frame member and the face member, the protrusion prevents the overlapping portion from being displaced inside the heat insulating panel. As a result, after assembly, a large gap does not occur between the corner piece and the L frame material,
When the heat insulating material is injected and foamed, the heat insulating material is less likely to leak from between the corner piece and the L frame material.

Further, since an opening is formed between the projecting portion and the corner portion, a finger or the like can be inserted into this opening and the projecting portion of the corner piece can be easily grasped. As a result, the work of attaching the corner piece to the L frame material can be performed by grasping the corner piece, and this attachment work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a prefabricated refrigerator-freezer assembled with heat insulating panels.

FIG. 2 is an enlarged perspective view of a main part in which a part of a face material of the heat insulating panel is cut away.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a sectional view of FIG. 3;

FIG. 5 is an exploded plan view of a face material, a frame material, and a corner piece.

FIG. 6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 C corner piece L L frame material 1 heat insulation panel 4 floor panel 10 face material 11 frame material 12 heat insulation material 13 end face part 14 connection part 21 corner part 23 overlap part 25d protrusion part 25e notch (opening)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F25D 23/06 303 F25D 23/08

Claims (2)

(57) [Claims] 1. A pair of face members arranged at intervals from each other, and a plurality of frame members arranged to be engaged with ends of the face members and to close a gap between the face members. And a heat insulating panel provided with a heat insulating material filled in a space between the face materials, wherein at least a pair of adjacent frame materials each have an end face part covering an end face of the heat insulating panel, and the end face part substantially. A L-shaped member having a substantially L-shaped cross section, the L-shaped frame member being formed at a right angle and a joining portion covering an end of one surface of the heat-insulating panel. The end faces of the pair of adjacent L frame members are opposed to each other in a state of being close to each other, and a corner piece is provided at a portion where the pair of L frame members is close to each other. This corner piece is provided at the end of the end face of the pair of L frame members. Corner portion, an overlap portion covering an end portion of the joining portion of the pair of L frame members, and a projection portion projecting from the overlap portion in the thickness direction of the heat insulating panel, wherein the projection portion is A heat insulation panel extending to near a face member facing an inner surface of the overlap portion. 2. The heat insulating panel according to claim 1, wherein an opening is formed between the projecting portion and the corner portion.