JPH09264491A - Flat corner panel - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent the bolt head from being exposed from a flat panel in a corner panel in which two flat panels having a heat insulating core material filled between a pair of surface plates are connected to each other at right angles by bolts. is there. SOLUTION: One panel 1 connected to each other at right angles
In the thickness direction of 2, a stepped sleeve 40 having a locking claw 47 for retaining is embedded in a penetrating manner.
With the head 14a inserted into 0, the bolt 14 is inserted to connect both panels, and the decorative plate 50 is attached to the surface of the panel 12.
Are provided by snap engagement to cover the outer opening 48 of the stepped sleeve 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat corner panel, and more particularly, to the ends of two flat panels filled with a heat insulating core material between a pair of surface plates at right angles to each other with bolts. It concerns a spliced flat corner panel.

[0002]

2. Description of the Related Art As a heat insulating panel used in a general prefabricated refrigerator or the like, a sandwich panel in which a heat insulating core material such as foamed polyurethane is filled between a pair of aluminum alloy surface plates is widely used. Using this sandwich panel, the corner panel (corner panel)
As a general method for obtaining the above, a groove having a V-shaped cross section is formed from one surface side of the flat panel while leaving the surface plate of the other surface, and then the above V
There is a method of pressing the panel surfaces on both sides of the V-shaped groove and bending the surface plate of the other surface along the V-shaped groove.

However, since the corner panel of this structure is an integral type as shown in FIG. 9, it is necessary to produce a panel bent at 90 °, which requires precision of the panel molding jig. However, since it is bulky during transportation, transportation efficiency is poor. Also, the surface plate must be formed at 90 °, which is a very troublesome work when making a long product.

On the other hand, a structure of a corner panel in which two panels are joined by bolts is known. The corner panel 1 includes two flat panels 2 and 3 as shown in FIG.
The inner surface of one flat panel 2 and the end surface of the other flat panel 3 are brought into contact with each other so that they are orthogonal to each other, and a bolt 4 is inserted from the outer surface of the end of the flat panel 2. The structure is screwed into. actually,
Frame members 5 and 6 made of synthetic resin are added to the end surface of the flat panel 2 and the end portion of the flat panel 3, and one of the frame members 5 is a concave frame member (female) having a recess 5a for joining the both. The other frame member 6 is configured as a convex frame member (male) having the protrusion 6a.

According to this structure of the corner panel, the flat panels 2 and 3 can be manufactured separately, the corner panel is not bulky during transportation, and no bending jig is required. It has the advantage of being easy to manufacture.

[0006]

However, as shown in FIG.
As can be seen from the figure, the head 4a of the bolt 4 inserted from the outer surface of the end of the flat panel 2 projects outward from the surface 2a of the flat panel 2, so that a prefabricated refrigerator or the like configured by the corner panel can be correspondingly formed. Since the installation area becomes large and it becomes difficult to handle, and the head of the bolt is visible from the outside, it disturbs the harmony with the installation space, making it difficult to have a good design appearance.

Therefore, an object of the present invention is to solve the above-mentioned problems and to manufacture a flat panel separately, and also to prevent the head of the bolt from being exposed from the outer surface of the end of the flat panel after joining. It is intended to provide a panel and a flat corner panel capable of exhibiting an excellent appearance in terms of design.

[0008]

In order to achieve the above object, the invention according to claim 1 connects two flat panels having a heat insulating core material between a pair of surface plates at right angles with each other by bolts. In the corner panel, a stepped sleeve that is embedded in the thickness direction of one panel that is connected at right angles to each other and a bolt that is inserted up to the head in the stepped sleeve and connects both panels, A decorative plate for closing the outer opening of the stepped sleeve is provided.

Since the stepped sleeve is embedded in the thickness direction of one of the panels in a penetrating manner, even in the panel in which the heat insulating core material is filled between the pair of surface plates, the head of the bolt is located inside the panel. It can be inserted and tightened in the state of being. And since this bolt head is covered with a decorative plate that closes the outer opening of the stepped sleeve, the bolt head is neither projected nor exposed on the surface, easy to handle,
It is possible to obtain a flat corner panel excellent in design.

According to the second aspect of the invention, the stepped sleeve is provided with at least two axially tapering retaining claws around the stepped sleeve.
The stepped sleeve can be permanently fixed in the panel simply by inserting.

According to a third aspect of the present invention, in the decorative plate, the plate material is formed into a substantially U-shaped cross section or a substantially L shape, and snap-fitting utilizing the elastic deformation of the plate material causes the outer side of the stepped sleeve. The structure is such that it covers the region including the opening and is attached to the end of the one panel. Since the attachment is made by snap engagement utilizing elastic deformation, the decorative plate can be easily attached after the panels are connected at right angles.

In this case, the tip end bent portion of one arm portion of the decorative plate is inserted into the surface of the one panel and the other arm portion is inserted into a gap between the panels, or one end portion is folded. The bent portion may be inserted into the surface of the one panel and the bent portion of the other end may be inserted into the surface of the other panel.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 10 is a prefabricated refrigerator constructed by using heat insulating panels, and 11 is a flat corner panel having a flat surface.

As the flat corner panel 11, for example, two flat panels 12 and 13 made of a sandwich panel in which a heat insulating core material 9 made of foamed polyurethane is injected and foamed between a pair of surface plates 7 and 8 made of aluminum alloy are bolted. It has a structure in which 14 is joined at a right angle. In order to prevent the bolt 14 from being seen from the outside, the bolt 14 is embedded in the panel 12 up to its head, and the bolt 1
A decorative plate 50 having a substantially U-shaped cross section is attached to the end surface of the panel 12 so as to cover the head of No. 4 and hide the bolt holes. The surface plates 7 and 8 can be made of, for example, a color steel plate, stainless steel, or a plastic plate material other than the aluminum alloy.

FIG. 2 is a cross section of the spliced portion of the flat corner panel 11, and FIG. 3 is a cross section with the bolts removed.

Frame members 20 and 30 made of synthetic resin are attached to the end portions of the flat panel 12 and the end surface of the flat panel 13, and one of the frame members 20 is a concave frame having an engaging concave portion 23 for joining the two. The frame member 30 is configured as a member (female), and the other frame member 30 is configured as a convex frame member (male) having an engaging protrusion 33.

More specifically, the end portion of the flat panel 12 has a structure in which a hollow frame member 20 made of synthetic resin is added to the portion of the panel body where the surface plates 7 and 8 are present. The frame member 20 is made of a hollow body having a rectangular cross section that is substantially the same as the wall thickness of the flat panel 12, and has U-shaped fitting portions 21 that are recessed inwardly on both sides on the side of the joint surface with respect to the panel body. The frame member 20 has the U-shaped fitting portion 21 in which the edges 7a and 8a of the front surface plates 7 and 8 which are bent inward before the frame member 20 are inserted, that is,
The U-shaped fitting portion 2 is provided between the edge portions 7a and 8a of the surface plates 7 and 8.
It is attached to the panel body by fitting the front end sides of the 1, 21.

The frame member 20 of the flat panel 12 is
When the flat panel 12 and the flat panel 13 are joined to each other, the flat panel 13 has an engaging concave portion 23 that fits with the engaging convex portion 33 of the frame member 30 of the flat panel 13. The engagement recess 23 is formed in the frame member 20 as a recess having an inclined surface that is tapered from the inner surface of the end of the flat panel 12, and the inside of the flat panel 12 has a frusto-conical or trapezoidal cross section. Is protruding.

On the other hand, a frame member 30 made of synthetic resin is also mounted on the end surface of the flat panel 13. The frame member 30 has a U-shaped fitting portion 31 having a bifurcated cross section on both sides thereof, and an engaging convex portion fitted in the engaging concave portion 23 of the frame member 20 of the flat panel 12 at the center. 33. The engagement protrusion 33 has a tapered trapezoidal cross section, and the frame member 2
It is fitted in the engagement recess 23 of 0 and is set in the correct position.

Further, a stepped sleeve 40 is embedded in the frame member 20 of one of the panels connected at right angles to each other, that is, the flat panel 12, in a penetrating manner in the thickness direction thereof. The stepped sleeve 40 includes a rear surface of the bottom portion 24 of the engaging recess 23, that is, an upper surface portion protruding into the flat panel 12, and the frame member 2.
Outer frame portion 22 located on the outer surface side of the flat panel 12 of 0
It is sandwiched between and.

As shown in FIGS. 5-7, the stepped sleeve 4
0 is divided into a large-diameter portion 41 through which the head 14a of the bolt 14 can pass and a small-diameter portion 42 through which only the screw portion 14b of the bolt 14 can pass. A stepped portion 43 on which the head 14a of the seat is seated is formed.

Further, a fitting portion 44 having a smaller diameter is formed at a tip portion of the small diameter portion 42 so as to fit into a hole 25 provided on the back surface of the bottom portion 24 of the engaging recess 23, and the tip portion of the small diameter portion 42 is formed. A flange portion 45 is formed on the bottom surface of the bottom portion 24 so as to be in contact with the back surface of the bottom portion 24 and to prevent the tip portion from entering the hole 25.

On the other hand, the large-diameter portion 41, as shown by the depth D in FIG. 7, has a large-diameter portion such that the bolt head portion 14a sufficiently enters and the flexible opening edge portion 46 remains above the bolt head portion 14a. It is formed to a depth D. In order to make this opening edge portion 46 more easily flexible, here, as shown in FIG. 8, the thickness of the opening edge portion 46 from the opening side of the large diameter portion 41 to a predetermined depth d. The thickness is thin. Then, on the outer peripheral surface of the thin and flexible opening edge portion 46, a pair of locking claws 4 for preventing slippage are provided at positions facing each other in the diametrical direction.
7 are protruded. The retaining claw 47 for preventing slippage is a stepped portion 47a that abuts the inner surface wall of the outer frame portion 22 when the flange portion 45 of the stepped sleeve 40 is brought into contact with the rear surface of the bottom portion 24 of the engagement recess 23. So that the opening edge 46
A taper portion 47b is formed which protrudes radially from the outer peripheral surface of the stepped portion and has a taper whose diameter gradually decreases inward in the axial direction from the step portion 47a. It is possible to provide a plurality of pairs of the retaining claws 47 for retaining, but it is sufficient to provide at least one pair (two).

Since the stepped sleeve 40 is inserted into the flat panel 12, the outer frame portion 22 of the frame member 20 of the flat panel 12 has a size corresponding to the outer diameter of the large diameter portion 41 of the stepped sleeve 40. Through holes 26 are provided.

When the stepped sleeve 40 is inserted into the flat panel 12 through the through hole 26, the thin and flexible large-diameter portion 41 has the tapered portion 47b of the retaining claw 47 for preventing slippage. When it comes into contact with the inner edge, the inner edge is gradually narrowed inward, the retaining claws 47 for preventing slipping over the inner edge of the through hole 26, and the step portion 47a comes into contact with the outer frame portion 22. At this time, on the other end side of the stepped sleeve 40, the small-diameter fitting portion 44 is fitted into the hole 25 on the rear surface of the bottom portion 24 of the engaging recess 23, and the flange portion 45 is arranged on the rear surface of the bottom portion 24 of the engaging recess 23. Contact each other. As a result, the stepped sleeve 40 includes the rear surface of the bottom portion 24 of the engaging recess 23, that is, the upper surface portion protruding into the flat panel 12, and the outer frame portion 22 of the frame member 30 located on the outer surface side of the flat panel 12. It is strongly sandwiched between. In other words, the frame member 20 is firmly supported by the stepped sleeve 40 provided between the outer frame portion 22 and the engagement recess 23 so that its outer shape is not deformed.

In the actual manufacture of the flat corner panel 11, a stepped sleeve 40 for the coach screw bolt is previously set in the frame member 20 of the flat panel 12, and then polyurethane foam is injected and foamed. , Make one panel 12. By doing so, the stepped sleeve 40 is firmly fixed to the panel 20.

Then, the coach screw bolt 14 is inserted into the stepped sleeve 40 up to the head as shown in FIG. 2 and is joined to another flat panel 13 at 90 °. In this manner, for example, after assembling a refrigerator or the like, by attaching the decorative plate 50 as a decorative cover from above the flat corner panel, the outer opening 48 of the stepped sleeve 40 is closed so that the bolt 14 cannot be seen. To do.

The decorative plate 50 is made of, for example, the same metal as the surface plate 7 of the panel 12 (here, an aluminum alloy).
The plate member is formed in a substantially U-shaped cross section, and is snap-fitted by utilizing its elastic deformation so as to cover the region including the outer opening 48 of the stepped sleeve 40 and be attached to the end of the panel 12. Specifically, the decorative plate 50 has a base portion 51 having a length corresponding to the thickness of the panel 12, and arm portions 52 and 53 extending at right angles from both sides thereof, and the base portion 51 is the panel 1.
2, the arm portion 52 covers the area of the outer frame portion 22 of the panel 12 including the outer opening 48 of the stepped sleeve 40, and the arm portion 53 engages the inner frame portion of the panel 12. It covers up to the front of the recess 23. Furthermore, the decorative plate 50
In order to prevent the disengagement of the armature more completely, a bent portion 52a protruding inward is formed at the end of one arm portion 52 of the decorative plate 50, and the bent portion 52a is formed on the surface of the panel 12, that is, the frame member. By inserting it into the U-shaped fitting part 21 of 20,
The decorative plate 50 is firmly attached but detachably attached. In other words, in the decorative plate 50, the tip bent portion 52a of the one arm portion 52 is inserted into the surface of the panel 12, and the other arm portion 53 is inserted.
Is inserted in the gap between the panels 12 and 13.

However, the decorative plate 50 has a stepped sleeve 40.
As shown in FIG. 4, not only the end surface of the panel 12 including the outer opening 48 is covered, but also a part of the surface of the panel 13 is covered. The cross section is formed in an inverted L shape, and the bent portion 52a at one end thereof is formed on the surface of the panel 12, that is, the U-shaped fitting portion 21 of the frame member 20.
Alternatively, the other end portion 52b may be inserted into the surface of the panel 13, that is, the U-shaped fitting portion 31 of the frame member 30, beyond the joint between the panels 12 and 13.

With the above construction, the decorative plate 50 can be easily elastically hooked to the end of the panel 12 after the two flat panels 1 and 2 are connected at right angles by the bolts 14. It can be attached and removed if desired. The material of the decorative plate 50 does not necessarily have to be the same as that of the surface plate of the panel, and a different material such as stainless steel or plastic can be used.

[0032]

As described above, according to the present invention,
The following excellent effects can be obtained.

(1) According to the invention described in claim 1, since the stepped sleeve is embedded in a penetrating manner in the thickness direction of one panel, the panel in which the heat insulating core material is filled between the pair of surface plates. Also in the above, the bolt can be inserted and tightened with its head positioned inside the panel. Since this bolt head is covered with a decorative plate that closes the outer opening of the stepped sleeve, the bolt head is neither projected nor exposed on the surface, is easy to handle, and is a flat corner panel excellent in design. Can be obtained.

(2) According to the invention described in claim 2, since the stepped sleeve is provided with at least two axially tapering retaining pawls for preventing slippage. , The step sleeve can be easily fixed in the panel by simply inserting it.

(3) According to the third aspect of the invention, the decorative plate is formed by forming a plate material into a substantially U-shaped section or a substantially L-shaped section, and snapping one of the members by elastic deformation utilizing its elastic deformation. Since it is attached to the end of the panel, the decorative plate can be easily attached after the panels are connected at a right angle.

[Brief description of drawings]

FIG. 1 is a perspective view showing a prefabricated refrigerator using a flat corner panel of the present invention with a part cut away.

FIG. 2 is a sectional view showing a seamed portion of the flat corner panel of the present invention.

FIG. 3 is a cross-sectional view showing a joint portion of the flat corner panel of the present invention in a state where bolts are removed.

FIG. 4 is a cross-sectional view showing a seamed portion of a flat corner panel using another form of a decorative plate according to the present invention.

FIG. 5 is a plan view of a stepped sleeve used in the flat corner panel of the present invention.

FIG. 6 is a side view of a stepped sleeve used in the flat corner panel of the present invention.

7 is a sectional view taken along the line AA of the stepped sleeve of FIG.

FIG. 8 is an enlarged view of a portion B in FIG. 7;

FIG. 9 is a perspective view of a conventional corner panel.

FIG. 10 is a cross-sectional view of a joint portion of another conventional corner panel.

[Explanation of symbols]

 7, 8 Surface plate 9 Heat insulating core material 11 Flat corner panel 12, 13 Flat panel 14 Bolt 14a Head 14b Screw portion 20 Frame member 21 U-shaped fitting portion 23 Engagement recess 26 Through hole 30 Frame member 31 U-shaped fitting Part 33 Fitting convex part 40 Stepped sleeve 41 Large-diameter part 42 Small-diameter part 43 Step part 44 Small-diameter fitting part 45 Flange part 46 Opening edge part 47 Retaining claw 47a Step part 47b Tapered part 48 Outer opening part 50 Decorative plate 51 Base 52, 53 Arm 52a, 52b Bent

Claims (3)

[Claims] 1. In a corner panel in which two flat panels filled with a heat insulating core material between a pair of surface plates are connected to each other at right angles by bolts, one panel connected at right angles to each other penetrates in the thickness direction. A stepped sleeve that is embedded in a circular shape, a bolt that is inserted into the stepped sleeve up to the head and connects both panels, and a decorative plate that closes at least the outer opening of the stepped sleeve. Flat corner panel. 2. The flat corner panel according to claim 1, wherein the stepped sleeve is provided with at least two axially tapered retaining pawls for preventing slippage. 3. The decorative plate, wherein the plate material is formed into a substantially U-shaped or L-shaped cross-section, and the region including the outer opening of the stepped sleeve is formed by snap engagement utilizing its elastic deformation. The flat corner panel according to claim 1 or 2, wherein the flat corner panel is covered and attached to an end portion of the one panel.