JP4090185B2 - Foldable cooler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foldable cooler that expands a component part to increase the internal volume when the product is conveyed in a cold storage state, and folds the component part after use to reduce the bulk so that it can be returned and stored.
[0002]
[Prior art]
A general cool box is composed of a cool box main body and a door part. The main body part and the door part are formed by injecting and foaming a foamed urethane resin mixture into an inner cavity of an outer shell to form a heat insulating layer.
[0003]
A small one of the above-described cold storages is a cool box used by fishing enthusiasts and a large one is for storing the cold storage agent and the goods inside and transporting the goods in a cold state.
[0004]
[Problems to be solved by the invention]
The above large cooler does not affect the cost of transportation and storage when the product is packed inside, but when returned to or stored in an empty cooler, the interior is hollow, This is a cause of significant increase in storage costs.
[0005]
In view of the above problems, the present invention provides a cold storage having a heat insulating wall by expanding each component when storing and transporting goods inside, and after use, the component is folded to reduce the bulk and returned and stored. It is an object of the present invention to provide a foldable cold storage that can be made.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises a U-shaped front and back heat insulation walls having a shallow cross section, a heat insulation side wall that can be folded in a folding screen connecting the ends of both the front and back heat insulation walls, and the back surface. A heat-insulating bottom plate connected to the heat-insulating wall by a hinge and capable of being lifted up, a heat-insulating ceiling plate connected to the back-side heat-insulating wall by a hinge, and a bottom edge and an upper edge of the heat-insulating side wall that can be folded like a folding screen It is composed of a stretchable reinforcing member that is addressed and a packing that is pressed against the connecting portion of the heat insulating side wall that can be folded in a folding screen.
[0007]
According to the present invention configured as described above, the internal volume is expanded in the use state, and the same ability as a normal cold storage is exhibited, and after use, it can be folded to reduce the bulk so that the return and storage costs can be reduced. Reduction can be achieved.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a foldable cooler according to the present invention. A heat insulating door 11 is attached to a front heat insulating wall 12 (outer frame) by a hinge 13 so as to be opened and closed, and a lock handle 14 is provided on the front left side of the heat insulating door 11. On the left side of the front heat insulating wall 12, a display panel 16 for stored goods, an internal temperature indicator 17 and the like are provided, and a reinforcing member 18 having an L-shaped cross section is addressed to the bottom edge 15a and the upper edge 15b of the heat insulating side wall 15. A caster C is attached under the reinforcing member 18.
[0009]
A packing 27b is interposed at the junction between the front and back heat insulating walls 12, 19 and the heat insulating side wall 15.
[0010]
FIG. 2 is a side view, and the end 20 (see FIG. 3) bent in a U shape of the front and back heat insulating walls 12 and 19 can be folded in a folding screen by connecting two parts with hinges 21. The heat insulating side wall 15 is connected to the hinge 22 so as to be foldable, and an expandable L-shaped reinforcing member 18 is applied to the bottom edge 15a and the upper edge 15b of the heat insulating side wall 15 so as to pass through the through hole 31 and screw V. (Refer to FIG. 4) The front and back heat insulation walls 12 and 19 are fixed. Note that a packing 27c is interposed at the connecting portion by the hinges 21 and 22.
[0011]
The L-shaped reinforcing member 18 is provided with a cylindrical L-shaped member 18s at both ends, an L-shaped member 18i is slidably inserted into the cylindrical L-shaped member 18s, and the foldable heat insulating side wall 15 is provided. An eccentric cam 23 (see FIG. 4C) that fixes the folded state and the assembled state is provided.
[0012]
FIG. 3 is a top view, and the upper edge 15b (see FIG. 1) of the heat insulating side wall 15 is provided with a stretchable L-shaped reinforcing member 18, and a ceiling heat insulating plate 24 is attached to the rear heat insulating wall 19 by a hinge 25. The two heat insulating side walls 15 are connected by hinges 21, and both ends thereof are connected to the rear heat insulating wall 19 and the bent end 20 of the front heat insulating wall 12 by hinges 22. The ends of the connected heat insulating side walls 15 are chamfered by 45 degrees so as not to hinder folding.
[0013]
In the 45-degree chamfered portion 26, since the heat insulating effect is lowered, the packing 27a having a triangular cross section is assigned to the chamfered portion 26. When the handle 28 is turned, the oval cam 29 (see FIG. 5) rotates, and the oval cam 29 The rod 30 whose end face is in contact with the protruding portion is protruded, so that the packing 27 a is pressed against the chamfered portion 26. In addition to the oval cam, a known mechanism such as an eccentric cam or a link mechanism can be employed as a mechanism for pressing the packing 27a.
[0014]
The packing 27d is interposed at the contact portion between the front heat insulating wall 12 and the heat insulating door, and the packing 27e is interposed at the connecting portion by the hinge 25.
[0015]
FIG. 4 shows the details of the reinforcing member 18 addressed to the bottom edge 15a and the upper edge 15b of the heat insulating side wall 15. There are cylindrical cross-sectional L-shaped members 18s at both ends. A cross-sectional L-shaped member 18i is slidably inserted.
[0016]
On the outer surface of the cylindrical L-shaped member 18s, through holes 31 are bored at three equal intervals, screw holes are bored in the back, and the front and back surfaces of the front and back surfaces are passed through the through holes 31 with screws V. It fixes to the heat insulation walls 12 and 19 (refer FIG. 2).
[0017]
Also, a window 34 is opened near the inner end of the cylindrical L-shaped member 18s, and an eccentric cam lever 35 is provided in the window 43. When the lever 35 is tilted, the eccentric cam 23 becomes a long hole 40a of the L-shaped member 18i. By pressing the washer W fitted to the reinforcing member 18, the expansion / contraction position of the reinforcing member 18 is fixed. The washer W also serves to prevent the L-shaped member from coming off.
[0018]
A long hole 40b is provided on the upper surface of the cylindrical L-shaped member 18s, and pins 33 fitted in the holes 32 (see FIG. 3C) at both ends of the L-shaped member 18i slide in the long hole 40b. The L-shaped member 18i is prevented from coming off by being fitted. Note that screws V can be seen in three places through the long hole 40b, and the cylindrical L-shaped member 18s is fixed to the heat insulating walls 12 and 19 on the front surface and the rear surface by the screws V.
[0019]
In addition, although the shape of the reinforcing member 18 is L-shaped, it is not always necessary to be L-shaped. In short, when the components are assembled and the product is accommodated in the folded state, Any material can be used as long as it can be supported and reinforced so that the cool box is not distorted. Square steel, flat steel, T-shaped steel, H-shaped steel, and the like can be appropriately employed.
[0020]
FIG. 5 shows details of the pressing mechanism of the packing 27a (see FIG. 3) described in FIG. 3. An oval cam 29 is attached to the shaft of the handle 28, and the end of the rod 30 is urged by a spring 37 so that the oval cam is urged. When the handle 28 is rotated as indicated by the alternate long and short dash line, the rod 37 is urged by the spring 37, and when the handle 30 is rotated as indicated by the solid line, the rod 30 resists the urging of the spring 37. In the direction of the arrow, as shown in FIG. 3, the packing 27a is pressed against the chamfered portion 26 of 45 degrees (see FIG. 3).
[0021]
FIG. 6 shows a state in which the cool box is folded, and as shown in FIG. 6A, the ceiling heat insulating plate 24 hangs down on the upper portion of the rear heat insulating wall 19 via a hinge not shown in the drawing, A bottom heat insulating plate 39 is repelled at a lower portion of the rear heat insulating wall 19 via a hinge not shown in the figure, and the heat insulating side wall 15 is folded by the hinges 21 and 22 and is directed to the upper edge and the bottom edge of the heat insulating side wall 15. The broken L-shaped member 18i (see FIG. 4) of the reinforcing member 18 is housed in the cylindrical L-shaped member 15s and is shortened.
[0022]
FIG. 2B is a top view, and the heat insulating side wall 15 is folded by hinges 21 and 22, and the bottom heat insulating plate 39 and the ceiling heat insulating plate 24 are accommodated in the U-shaped pocket portion 38 of the rear heat insulating wall 19. The L-shaped member 18i (see FIG. 4) of the reinforcing member 18 addressed to the top and bottom edges of the reinforcing member 18 is housed in the cylindrical L-shaped member 18s and is shortened. The heat insulation door 11 is housed in the frame of the front heat insulation wall 12.
[0023]
【The invention's effect】
As described above, according to the present invention, when goods are stored and transported / stored in a cold state, the components constituting the cold box are assembled into a normal cold box state, and the transportation of the goods is finished. Since the cold storage can be returned by folding it down, the transportation and storage costs can be greatly reduced.
[0024]
Moreover, since the reinforcement member is assigned to the bottom edge part and the upper edge part of the heat insulation side wall folded, and the caster is attached under the reinforcement member, a load is applied to the connection part by the hinge of the heat insulation side wall, and the cool box is distorted. There is nothing.
[Brief description of the drawings]
FIG. 1 is a front view of a foldable cooler according to the present invention. FIG. 2 is a side view thereof. FIG. 3 is a top view of the same. FIG. 4 is a detailed view of a reinforcing member. State, (c) AA sectional view, (d) Top view [FIG. 5] Detailed view of packing pressing mechanism [FIG. 6] (a) Side view in a folded state, (b) Top view [Explanation of symbols]
11 Insulation door 12 Front insulation wall 13 Hinge (door)
14 Lock handle 15 Thermal insulation side wall 15a Thermal insulation side wall upper edge 15b Thermal insulation side wall bottom edge 15i Solid L-shaped member 15s Cylindrical L-shaped member 16 Display panel 17 Temperature indicator 18 Reinforcement member 19 Rear thermal insulation wall 20 End 21 of the rear thermal insulation wall Hinge (in the middle of the insulating side wall)
22 Hinge (at both ends of the heat insulation side wall)
23 Fixing means 24 Ceiling heat insulating plate 25a Hinge (of bottom heat insulating plate)
25b Hinge (for ceiling insulation board)
26 Chamfered portion 27a, 27b, 27c, 27d, 27e Packing 28 Handle 29 Oval cam 30 Rod 31 Through hole 32 Hole 33 Pin 34 Window 35 Eccentric cam lever 36 Handle 37 Spring 38 Bore portion 39 Bottom heat insulating plate 40a, 40b Long hole C Caster V screw

Claims (6)

The front and back heat insulation walls with a shallow U-shaped cross section, a folding side wall that can be folded in a folding screen connecting the ends of both the front and back heat insulation walls, and hinged to the back heat insulation wall can be lifted up. A heat-insulating bottom plate, a heat-insulating ceiling plate connected to the back heat-insulating wall by a hinge so as to be able to hang down, a stretchable reinforcing member addressed to a bottom edge and an upper edge of the heat-insulating side wall that can be folded like a folding screen, and A foldable cooler comprising a packing pressed against a connecting portion of a heat insulating side wall that can be folded like a folding screen. The foldable cool box according to claim 1, wherein the expandable and contractible reinforcing member includes a cylindrical member and a member that is slidably inserted into the cylindrical member and can be fixed at a predetermined position. The foldable cooler according to claim 1 or 2, wherein the U-shaped depth of the heat insulating walls on the front and back surfaces having a shallow U-shaped cross section is a depth that the heat insulating bottom plate and the heat insulating ceiling plate can accommodate. The foldable cooler according to any one of claims 1 to 3, wherein the packing pressing mechanism is configured to advance and retract the rod by an oval cam, an eccentric cam, and a link. The foldable cool box according to any one of claims 1 to 4, wherein a caster is attached to the bottom of the extendable reinforcing member. The foldable reinforcement member according to any one of claims 1 to 5, wherein the stretchable reinforcing member includes a cylindrical L-shaped member and an L-shaped member that is slidably inserted into the cylindrical L-shaped member. Cold storage.

Images