JPH0585823B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial Field of Use The present invention relates to a frame member that is disposed in the opening portions of an inner box and an outer box for providing doors, and connects both boxes in a heat-insulating manner.

Conventional technology A show case has an opening on the front or rear side for entering and exiting sales products, and most of the cases have a transparent door that can be opened and closed freely, and this door can be rotated using a hinge device. There are some types that are designed to be able to slide freely on rails, and others that are able to slide freely on rails. In particular, when installing the latter door (hereinafter referred to as a sliding door), a resin frame member is installed at the opening end of both the inner and outer boxes, and the upper and lower sliding doors are attached to this frame member either integrally or separately. A moving rail is provided. Mikiakiaki
No. 61-194364 discloses an example in which the upper and lower rails are constructed separately from the frame member. This frame member is provided with locking grooves for locking the flange portions of the inner box and the outer box, respectively. In addition, a rectangular frame member is constructed by combining the horizontal frames on the upper and lower sides and the vertical frames on the left and right sides, and the L-shaped member is fixed so that the abutting parts are held at right angles. was common.

Problems to be Solved by the Invention In the case of the above-mentioned frame member, it is possible to hold the adjacent sides at right angles to each other by the L-shaped member;
The L-shaped member exerts its forced fixing force only on the parts where adjacent sides meet, and exerts a holding force that presses the inner box flange part that is locked against the frame member inward. It wasn't something to give. Further, in fixing the L-shaped member to the frame member, fixing members such as screws are required, and when screws are used, there is a problem in that the screws are exposed when the door is opened and closed. Moreover, since four L-shaped members are required if they are installed at each corner, fixing them at two locations with screws means a total of eight locations, making fixing the frames together extremely troublesome. was.

SUMMARY OF THE INVENTION An object of the present invention is to provide a frame member that facilitates the work of connecting frames by matching their ends.

[Structure of the invention]

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a frame member that forms an opening of a box such as a heat-insulating box, and includes an inner locking groove that locks the edge of the inner box. and horizontal frames on two upper and lower sides, vertical frames on two left and right sides, each frame having an outer locking groove for locking the edge of the outer box, and a part where the ends of each frame meet, It is provided with a corner connecting member that connects each frame in an annular manner, and an annular fastening body having elasticity that tightly contacts the outer periphery of each annularly connected frame and tightens each frame.

In addition, if the fastening body is placed so as to face the outer locking groove before locking the outer and outer box edges of the insulation box body in the inner locking groove and the outer locking groove, respectively, the outer box The fastening body is elastically deformed by the pressure exerted by the edge, bringing the edge of the outer box into close contact with the outer locking groove, which is effective in improving the degree of adhesion between the two.

Function: Because the elastic annular fastening body is placed in close contact with the periphery of each frame, a tightening force acts in the center direction of each frame, making the adhesion particularly good at the mating parts of the ends of each frame. In addition to improving the dimensional accuracy of the member, it can be easily assembled into a box such as a heat insulating box. In addition, a tightening force is applied to the edge of the inner box that is locked in the inner locking groove by the previous tightening force, making it difficult for it to come off from the locking groove, and reducing the number of fixing points (number of screws) of the corner connection member. ,
It is now possible to assemble the inner box while keeping it in a lightly tightened state.
As a frame member, it has tolerance in the vertical and horizontal directions. Furthermore, if the fastening body is disposed in the outer locking groove, it can function as a sealing member that improves the adhesion between the edge of the outer box and the outside locking groove, and the fastening body can be made of rubber or the like. If an elastic body with airtightness is used, the frame member and the outer box will have good watertightness.

Embodiments Embodiments of the present invention will be described below with reference to FIGS. 1 to 10.

Reference numeral 1 denotes a refrigerated case that consists of an inner box 2 made of metal with an opening on one side, an outer box 3, and a foam insulation material 4 such as hard polyurethane filled between the two boxes. It has a cooling chamber 8 in which a cooler 6 and a blower device 7 are arranged in the upper part of the interior formed by the inner surface of a sliding door (to be described later), and a shelf member such as a net shelf that is removably arranged below the cooling chamber. A storage room 10 partitioned into a plurality of upper and lower stages at 9 is provided. Further, a transparent sliding door 11 and vertically opposed upper and lower rails 12 and 13 for guiding the door are arranged in the opening, and above the upper rail 12 there is provided a lighting room 14 and a storage room 1.
A machine room 17 in which a compressor 15, a condenser 16, etc. are arranged is arranged below the engine.

Reference numeral 20 denotes a front frame body as a frame member made of hard resin disposed corresponding to the front opening, and is composed of horizontal frames 20A on two sides, top and bottom, and vertical frames 20B on two sides, left and right. , 20B has an inner locking groove 22 that opens rearward and an outer locking groove 2 that opens outward.
5, and the ends of each frame are joined together to form a rectangular ring shape. During this assembly, both ends of the upper horizontal frame 20A and the upper ends of the left and right vertical frames 20B are formed into a three-dimensional L-shape with horizontal and vertical surfaces, and are made of metal corner connecting members each having a fixing hole on each surface. The lower horizontal frame 20 is held at right angles by the L-shaped member 50 of
Both ends of A and the lower ends of the left and right vertical frames 20B are fixed to reinforcing members 27B. Reference numeral 24 denotes an elastic annular-shaped fastening body (a rubber band made of natural rubber is used in this example), which fastens the front frame 20 and applies pressure inward to tighten the front frame. 20 is firmly fixed. Further, an outward flange 21 formed at the opening edge of the inner box 2 is locked to the inner locking groove 22, and an outer flange 21 formed at the edge of the outer box main body 3A, which will be described later, is locked to the outer locking groove 25. When the sliding door 11 that can slide on the vertical sliding rails 12 and 13 comes into contact with the side surface of the vertical frame 20B, the inward flange 23 is locked, and when the sliding door 11 that is slidable on the vertical sliding rails 12 and 13 comes into contact with the side surface of the vertical frame 20B, a Three ribs 26 are formed in parallel to prevent cold air from leaking. On the lower surface of the lower horizontal frame 20A, there is an angle 2 as a reinforcing member formed in an annular shape from a steel material with a U-shaped cross section to reinforce the front surface of the machine room 17.
7,27B are arranged.

3A is an outer box body which is bent into an isosceles trapezoid shape with no lower bottom so that it has a top surface and both side surfaces and has a wide front view; 29 is a unit top plate that constitutes the ceiling of the machine room 17; 33 is a This is a rear plate disposed on the back surface of the outer box body 3A.

The fastening body 24 may be disposed anywhere around the front frame body for fastening the front frame body 20, but if it is disposed in the outer locking groove 25, it can be disposed in the outer box body. The inward flange 23 and the outer locking groove 25 can be easily held in close contact with each other, and can function as a sealing material when filling the foam heat insulating material between the inner and outer boxes. Further, the left and right vertical frames 20B and the lower horizontal frame 20A are fixed to the angle 27B as shown in FIG.
In particular, the vertical frame 20B has a three-dimensional L-shape with both horizontal and vertical surfaces, and the vertical surface of the L-shaped member 53 having a fixing hole on the vertical surface is inserted into the insertion groove 54.
Fix the horizontal surface to the angle 27B with a fixing member such as a screw. On the other hand, as shown in FIGS. 4 and 9, the upper ends of the left and right vertical frames 20B and both ends of the upper horizontal frame 20A are connected by inserting the horizontal and vertical surfaces of the L-shaped member 50 into the insertion grooves 51, respectively, and screwing both sides. It is fixed by a fixing member 52 such as the like.

Here, to explain how to assemble both the inner and outer boxes 2, 3 and the front frame body 20 (see Fig. 1), the vertical frame 20B
The ends of the horizontal frame 20A are brought together to form a rectangular ring shape, and the outward flange 21 of the inner box is locked in the inner locking groove 22 of each frame 20A, 20B. Then, a rubber band 24 as a fastening body is attached to each frame 20A,
20B into the outer locking groove 25 and tighten the front frame body 20 toward the center of the annular shape, so that the inner box 2 locks into the inner locking groove 2.
Next, insert the flange on the top surface of the outer box body 3A into the outer locking groove 25 of the upper horizontal frame 20A, and insert the flange 23 on the side surface into the outer locking groove 25 of the left and right vertical frames 20B. Press the sides of the outer box body inward to increase the bending angle of the bent portion. At this time, since the angle 27 is located below the lower horizontal frame 20A, the lower surface of the annular angle 27 is attached to the outer box body together with a reinforcing and fixing member such as the L-shaped angle 28 provided at the lower end of the side surface. Fix it. In this state, insert the tip of the unit top plate 29 from behind at an angle into the annular angle 27 to an appropriate position (see Fig. 6), and insert the bent piece 30 that has been bent in advance before insertion. is returned to be flush with the other surface and the bent piece 30 is exposed to the U-shaped part of the angle 27 to prevent the unit top plate 29 from coming off the angle 27. Thereafter, the flange 31 bent at the tip of the unit top plate 29 is locked in a downwardly opening lower locking groove 32 formed at the lower end of the lower horizontal frame 20A. Then, while installing the rear plate 33 of the outer box on the back side of the outer box main body 3A, the rear end of the unit top plate 29 is attached to the rear plate 33.
Fixed at 3.

Thereafter, the space between the inner and outer boxes and the space between the inner box and the unit top plate are filled with foamed heat insulating material 4 such as hard polyurethane to form a heat insulating box. Furthermore, machine room 1
Since it is sufficient to install mechanical parts such as the compressor 15, condenser 16, and blower device on the bottom of the housing 7, the entire lower surface does not need to be a single plate and may be formed with several angles. Further, the rubber band 24 fixed in the outer locking groove 25 is pressed by the inward flange 23 of the outer box main body 3A and deforms against the elastic force.
Since it functions as a packing that increases the adhesion between the front frame body 20 and the inward flange 23, leakage of foaming of the heat insulating material 4 can be prevented.

In this example, the fastening body 24 is brought into close contact with the frames 20A, 20B fixed by the L-shaped members 50, 53 as corner connecting members, but the L-shaped members 50, 53 may be temporarily fixed. If the frames 20A and 20B are made to be able to move up and down and left and right to some extent, that is, to have a degree of freedom, even if the box becomes large and the edges of the inner box etc. are bent, the frame members will have freedom. The frame member and the inner box can be assembled regardless of the degree of deflection, and this deflection can also be corrected by changing the L-shaped member from a temporary state to a fixed state.

Reference numeral 40 indicates a drain pipe formed to correspond to a drain port 42 formed at an appropriate position in a drain groove 41 of the lower horizontal frame 20A, and 43 indicates a bedding placed on the bottom surface of the inner box, at the front thereof. A leg portion 45 is provided which is bent downward and has a presser bar 44 which faces into the drainage groove 41 and presses and holds the upper surface of the lower rail, which will be described later. The lower rail 13 has inner and outer guide ribs 13B, 13C and a protrusion 1.
3D is formed on its upper surface, and an insertion rib 13E is formed on its lower surface to prevent the rail from rising when it is inserted into the drainage groove 41 and pressed and held by the presser bar 44, and is detachable from the lower horizontal frame 20A. It is posted on. 46 is connected to the outlet of the dew pan 8B disposed below the cooler 6 in the cooling chamber 8, hangs down along the back of the inner box, extends forward between the bottom of the inner box and the bedding, and connects the tip to the floor. This is a flexible drainage pipe that is hooked onto hooks 47 formed on the legs 45 of the bed 43. It should be noted that when the distal end of the drain pipe 46 is hooked onto the hook 47, the distal end opening is surely directed downward. In particular, in this example, the lower horizontal frame 2
Since the rear part of 0A and the hook part 47 are inclined upward, the tip of the drain pipe 46 can be easily inclined. Further, since the drain pipe 46 is not buried in the heat insulating material layer, it can be easily attached and detached, and cleaning and maintenance inspection of the storage chamber 10 and the cooling chamber 8 can be easily performed.

〔Effect of the invention〕

As described in detail above, according to the present invention, by disposing the elastic annular fastening body around the frame member, the fixing points (screws) of the L-shaped member fixed to the abutting portions of each frame. The number of fixing members provided can be reduced, and the edge of the inner box that is locked in the inner locking groove is less likely to come off due to the tightening force of the fastening body. Also,
If the edge of the outer box is locked in the outer locking groove with the fastening body disposed in the outer locking groove of the frame member, the clamping body will be deformed by the pressure of the edge of the outer box. Since the adhesiveness with the outer locking groove is increased and the sealing performance between the edge of the outer box and the outer locking groove is improved, it can function as a sealing member for the foam heat insulating material filled between the inner and outer boxes.

[Brief explanation of the drawing]

Each figure shows one embodiment of the present invention, and FIG. 1 is a perspective view for explaining the assembly of the outer box main body to the front frame body;
Figure 2 is an external perspective view of the refrigerated storage case, Figure 3 is a vertical sectional view of the storage case, Figures 4 and 5 are enlarged sectional views of parts A and B in Figure 3, respectively.
Figure 7 and Figure 7 are external perspective views explaining how to assemble the unit top plate to the annular angle, Figure 8 is an external perspective view of the show case with the sliding door removed, and Figure 9 is a top view of the front frame. An enlarged perspective view of the corner mating part,
FIG. 10 is an enlarged perspective view of the mating portion of the lower corner of the front frame. DESCRIPTION OF SYMBOLS 1...Sho case, 2...Inner box, 3A...Outer box body, 4...Foam insulation material, 20...Front frame body (frame member), 20A...Horizontal frame, 20B...Vertical frame, 21 ...Outward flange (inner box end), 22
...Inner locking groove, 23...Inward flange (outer box end), 24...Rubber band (fastening body), 25...Outer locking groove, 50, 53...L-shaped member.

Claims (1)

[Scope of Claims] 1. A frame member forming an opening of a box such as a heat insulating box, which includes an inner locking groove that locks the edge of the inner box and an outer locking groove that locks the edge of the outer box. horizontal frames on two upper and lower sides and vertical frames on two left and right sides respectively formed on each frame, and a corner connecting member disposed across the abutting portions of the ends of each of the frames and connecting each of the frames in an annular shape. 1. A frame member forming an opening, comprising: an annular fastening body having elasticity that tightly contacts the outer periphery of each frame connected in an annular manner and tightens each frame. 2. A frame member that locks both the inner and outer box edges of the insulating box body in the inner locking groove and the outer locking groove, respectively,
2. A frame member forming an opening according to claim 1, wherein the outer box end is locked with the fastening body facing the outer locking groove.