JP2005147476A - Storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage with simplified wiring operation regarding to a heater by wiring a lead wire connected to a heater wire arranged in an heat insulated space formed by a sliding rubber along a guide groove formed on a door frame. <P>SOLUTION: When wiring the lead wire 28 for feeding the heater wire 64 installed in the heat insulated space 63 to introduce to an inside of the heat insulated space 63, the lead wire is wired through the guide groove 29 integrally formed with an insertion groove 27 for fixing a packing 13 on the door frame 20 forming a peripheral edge of a heat insulating opening and closing door 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a storage having a heater wire that prevents freezing of a heat insulating space that blocks cold air at the lower end portion of a heat insulating opening / closing door and condensation on a floor surface, and particularly relates to a storage that facilitates installation of the heater wire. .

Conventionally, a so-called roll-in in which the bottom edge of the entrance / exit is opened to the installation surface without forming a sill on the floor of the opening to carry in and out the stored goods from the outside to the inside with a cart or the like. In a type of storage, various storages have been proposed in which a sliding rubber is used in which the lower edge of the heat-insulating door is in sliding contact with the installation surface in order to ensure the airtightness when the door is closed. However, in storages using such sliding rubber, in order to prevent condensation and freezing on the lower surface of the opening, the sealed air is heated in a heat insulating space formed by the sliding rubber mounted on the lower surface of the door. It is necessary to embed a heater for this purpose. For example, Japanese Patent Laid-Open No. 2001-280806 discloses a heater in which a heater wire is mounted on a heater mounting plate made of a metal plate having excellent thermal conductivity, facing a heat insulating space formed between a sliding rubber and a floor surface. There is described a prefabricated freezer in which a section is installed and the entire air in the heat insulation space is uniformly and quickly heated so that condensation, freezing and the like in the vicinity of the sliding rubber can be efficiently and quickly prevented.
Japanese Patent Laid-Open No. 2001-280806 (pages 4 to 5, FIGS. 3 to 5)

However, in the prefabricated freezer according to Patent Document 1 described above, power is supplied from the power supply unit to the heater unit through a wiring induction pipe embedded in the heat-insulating opening / closing door. The wire had to be routed through the pipe. As a result, the installation work of the heater portion becomes complicated, and a separate pipe member is required, resulting in an increase in cost. Furthermore, when forming the heat-insulating door, it is done by filling the polyurethane foam material in the space surrounded by the wall, but at that time, the buried pipe becomes an obstacle and causes the filling failure There was a risk of becoming.
The present invention has been made to solve the problems in the prior art, and wiring is performed by arranging lead wires in guide grooves formed in the door frame. It is an object of the present invention to provide a storage that can easily carry out the wiring work of lead wires, reduce the number of work steps related to device manufacturing, and reduce costs.

  In order to achieve the above object, a storage according to claim 1 is provided on a heat insulating box surrounded by a heat insulating panel and one side surface of the heat insulating box, and a lower edge is opened to an installation surface. An opening, an insulated door that opens and closes the opening, a door frame that forms a peripheral edge of the insulated door, and a door frame that is sealed so that cold air in the cabinet does not leak when the door is closed. Packing, a sliding rubber provided at the lower edge of the heat-insulating door, and sealing and heat-insulating the lower edge of the opening when closed, and a heat-insulating space formed at the lower edge of the heat-insulating door by the sliding rubber And a heater having a heater wire provided in the heat insulating space and having both ends connected to a power source via lead wires, a fixing portion provided on the door frame, for fixing the packing, and the door frame. Fix the packing And a formed in the fixed part integral with the guide groove, the lead wire, the conjunction is wired to the guide groove, characterized in that it is connected to the heater wire provided in the insulation space.

  The storage according to claim 2 is the storage according to claim 1, wherein an opening portion of the guide groove to which the lead wire is wired is covered with the packing by fixing the packing to the fixing portion. It is characterized by that.

  The storage according to claim 3 is the storage according to claim 1 or 2, wherein the lead wire is inserted into the guide groove at the edge of the open portion of the guide groove where the lead wire is wired. Protrusions are provided in a direction that intersects the direction of the projection.

  In the storage which concerns on Claim 1, in the door frame which forms the periphery of a heat insulation opening / closing door, the lead which connects the heater wire and power supply which were provided in the heat insulation space in the guide groove formed integrally with the fixing | fixed part which fixes packing Since the wires are wired, a member for forming the wiring path of the lead wire is not required separately, and the wiring work can be easily performed. Therefore, it is possible to reduce the number of steps related to the assembly work and reduce the cost of the apparatus.

  Further, in the storage according to claim 2, since the open portion of the guide groove is covered with the packing fixed to the fixed portion, the lead wire wired in the guide groove is not separated from the guide groove by the packing. It is possible to hold it. Therefore, the lead wire can be held without providing a dedicated fixing member or the like in the guide groove.

  Further, in the storage according to claim 3, since the protrusion is provided at the edge of the opening portion of the guide groove in the direction intersecting with the direction in which the lead wire is inserted into the guide groove, a separate dedicated member is required. Without this, the lead wire can be held in the guide groove by the protrusion without coming off the guide groove.

Hereinafter, the embodiment which actualized the prefabricated freezer 1 about the storage concerning the present invention is described in detail based on a drawing. FIG. 1 is a perspective view of a prefabricated freezer according to the present embodiment.
As shown in FIG. 1, in the prefabricated freezer 1, a plurality of heat insulating panels 2 are connected to form a ceiling 3 and a side wall 4. The front surface 5 of the side wall 4 has an opening 7 for loading and unloading stored items opened up to the installation surface 6, and a heat insulating opening / closing door 8 is attached to the opening 7 so as to be freely opened and closed. . The heat insulating opening / closing door 8 is mounted so as to be swingable and openable via a hinge or the like, and is locked in a closed state by a lock member 9. Moreover, the refrigeration air conditioner 10 which cools the inside of the store | warehouse | chamber is isolate | separated and installed in the indoor unit 11 and the outdoor unit 12, respectively. Note that the refrigerated air conditioner 10 is already known and will not be described in detail.

  A packing 13 to be described later is attached to the peripheral edge of the heat-insulating door 8 and is in close contact with the heat-insulating door 8 when the door is closed, and is sealed so that the cool air in the cabinet does not leak out (see FIG. 3). In addition, the prefabricated freezer 1 according to the present embodiment does not form a sill on the floor of the opening and installs the lower edge of the entrance and exit in order to store and remove stored items from the outside to the inside with a cart or the like. This is a so-called roll-in type storage opened to the surface, and the opening 7 is open to the installation surface 6. Accordingly, in order to seal the opening lower edge portion 14, a sliding rubber 15 is slidably contacted with the installation surface 6 at the lower edge of the heat-insulating opening / closing door 8 and further installed in close contact with the warehouse side when the door is closed.

Next, the structure of the heat insulating door 8 will be described in detail with reference to FIGS. FIG. 2 is a perspective view showing a heat insulating opening / closing door of the prefabricated freezer according to the present embodiment. 3 is a cross-sectional view taken along the line AA in FIG. 2 taken along the line AA when the heat insulating door is closed. FIG. 4 is a cross-sectional view of the heat insulating door, particularly in the vicinity of the packing. 5 is a cross-sectional view taken along the line BB in FIG.
The heat insulating opening / closing door 8 includes a door frame 20 that forms a peripheral edge of the door, an inner door panel 21 that faces the interior when the door is closed, an outer door panel 22 that faces the exterior, and a heat insulating material 23 filled in a hollow portion thereof. It is basically configured by.
Further, on the back side of the heat insulating door 8, the central portion 16 excluding the peripheral edge is formed thick, and when the heat insulating door 8 is closed, the left and right side edges from the upper edge of the door back face are the openings 7. A packing 13 formed by extruding an elastic material in a cylindrical shape from the upper edge to the left and right side edges on the rear surface of the heat insulating door 8 from the upper edge of the mouth edge to the left and right side edges. Is installed.

Further, the door frame 20 has a fitting portion 25 for fitting the inner door panel 21, a fitting portion 26 for fitting the outer door panel 22, and an insertion groove 27 for fixing the packing 13. Further, a guide groove 29 for accommodating two lead wires 28 to be described later is formed integrally with the fitting portions 25 and 26 and the insertion groove 27. Here, the insertion groove 27 and the guide groove 29 are formed around the heat-insulating door 8 so as to surround the central portion 16.
When assembling, the inner door panel 21 is fitted to the fitting portion 25 of the door frame 20 constituting the door peripheral portion, the outer door panel 22 is fitted to the fitting portion 26, and the inside is a heat insulating material such as urethane foam. 23 is configured to constitute the heat insulating opening / closing door 8.

As shown in FIG. 4, the packing 13 includes three air layers 31, 32, and 33 inside, and an insertion portion 34 is provided at the bottom. The insertion part 34 has an inclined part 35 that spreads with a predetermined inclination from the tip part toward the packing 13, and has a locking part 36 for preventing removal at the terminal part.
When attaching the packing 13, the insertion portion 34 is inserted into the insertion groove 27 of the door frame 20, and the locking portions 36 are respectively engaged with the engagement pieces 37 formed in the insertion groove 27. The packing 13 is prevented from coming off the door frame 20 (see FIG. 4).

Further, when the packing 13 is attached to the door frame 20, the open portion 38 formed in the guide groove 29 is covered with the packing 13 and covered. Therefore, it is possible to hold the lead wire 28 arranged in the guide groove 29 so as not to be detached from the guide groove 29 without attaching a member for fixing the lead wire 28 separately.
Further, a protrusion 39 is provided at the edge of the open portion 38 of the guide groove 29 in a direction intersecting the direction in which the lead wire 28 is inserted into the guide groove (left and right direction in FIG. 4). The protrusion 39 also holds the lead wire 28 so that the lead wire 28 is not detached from the guide groove 29, similarly to the packing 13. Therefore, it is possible to hold the lead wire 28 in the guide groove 29 without attaching a member for fixing the lead wire 28 separately.

  On the other hand, the heat insulating panel 2 forming the side wall 4 to which the heat insulating door 8 is attached is in the space formed by the front wall 42, the back wall 43, and the side wall 44, similarly to the structure of the heat insulating door 8. It is formed by filling a heat insulating material 45 such as urethane foam. A door frame 47 is attached to the opening 7 provided in the side wall 4 to cover the periphery. The door frame 47 is made of an electrically insulating hard foamed synthetic resin and has a substantially L-shaped cross section.

Further, the heater frame 47 is provided with two heater wire grooves 50 and 51 having a substantially U-shaped cross section on the outer side surface 48 in parallel with each other and in a longitudinal manner. And the plate-shaped heater plate 52 is attached on it so that the groove | channels 50 and 51 for heater wires may each be coat | covered. One side of the heater plate 52 is brought into contact with the door frame heater wire 53 wired in the heater wire grooves 50 and 51, and when the heat insulating opening / closing door 8 is closed, the opposite surface thereof becomes the packing 13. It is provided so that it may contact | abut (refer FIG. 3). The heater plate 52 is formed of a member having a high thermal conductivity such as an aluminum alloy shaped member or a stainless steel plate.
Accordingly, since the packing 13 can be heated by the door frame heater wire 53 and the heater plate 52, moisture condensed on the packing 13 interposed between the door and the cabinet is frozen due to a temperature difference between the inside and the outside of the cabinet. Can be prevented. Thereby, the door can be opened and closed reliably, and the packing 13 can be prevented from coming off.

  In the description of the above embodiment, only the left edge portion (right side portion in FIG. 2) as viewed from the front of the heat-insulating door 8 has been described with reference to FIGS. 3 and 4. The parts (the upper part and the left part in FIG. 2, respectively) also have the same configuration as the left edge part except that the lead wire 28 is not wired. Therefore, the description thereof is omitted here.

Next, the sliding rubber 15 at the lower edge of the heat-insulating door 8 will be described with reference to FIG. As described above, the sliding rubber 15 is attached to the lower edge of the heat insulating door 8. The sliding rubber 15 is formed of a rubber plate, and is mounted by being bent in a substantially U shape while projecting downward from the lower edge on the front surface side to the lower edge on the rear surface side of the heat insulating door 8.
Specifically, one end edge of the sliding rubber 15 is brought into contact with the lower end portion on the surface side of the heat insulating opening / closing door 8 and is fixed by screwing a screw 56 into the heat insulating material 23 via the mounting plate 55. On the other hand, a spacer 57 having substantially the same thickness as the packing 13 is disposed on the lower edge of the back surface of the heat insulating door 8. A heater mounting plate 58 is fixed below the heat insulating material 23 and the spacer 57 corresponding to the lower edge of the heat insulating door 8. The other end edge of the sliding rubber 15 passes through the lower side of the heater mounting plate 58 to form a substantially U shape and is turned to the back surface side of the heat insulating opening / closing door 8. It fixes by screwing in the screw 61 from the insertion groove 27 via.

  The sliding rubber 15 attached by the above method forms a closed heat insulating space 63 together with the heater mounting plate 58 at the lower edge of the heat insulating opening / closing door 8. The heat insulating space 63 has a substantially rectangular parallelepiped shape and has a heat insulating effect at the opening lower edge portion 14. Further, in order to heat the heat insulating space 63 in the sliding rubber 15 and prevent condensation or freezing of the sliding rubber 15 or the like, a heater section 67 including a heater wire 64, a lead wire 28, and a joint portion 66 thereof is provided with a heat insulating door. 8 (see FIG. 2). In addition, power is supplied to the heater portion 67 from a power supply unit 68 disposed on the side wall 4 through a wiring hole 70 provided in the vicinity of the upper portion of the heat insulating opening / closing door 8 via an external wiring 69.

A heater wire 64 is installed on the heater mounting plate 58 in the heat insulation space 63 so as to face the heat insulation space 63 over the entire surface, and heats the air in the heat insulation space 63. As shown in FIG. 5, the heater mounting plate 58 has a structure in which a metal plate excellent in heat conductivity is bent into a box shape so as to open toward the installation surface 6, and the heater wire 64 is made of aluminum foil. It fixes and arrange | positions with adhesive tapes (not shown), such as a tape.
Further, as described above, the lead wire 28 is wired through the guide groove 29 of the door frame 20 for power supply to the heater wire 64. The lead wire 28 is introduced into the heat insulating space 63 through the wiring hole 71 provided in the heater mounting plate 58, and is joined by the heater wire 64 and the joining portion 66.

  Here, the heater wire 64 directly heats the air in the heat insulation space 63, and the heater mounting plate 58 to which the heater wire 64 is fixed is made of a metal having good heat conductivity, and is provided on the upper surface of the heat insulation space 63. Since they are arranged in an oval shape over substantially the entire area and can have a large facing area, the air in the heat insulating space 63 can be heated uniformly and quickly. Therefore, the heating efficiency is extremely good, and condensation and freezing of the sliding rubber 15 can be efficiently prevented.

  Next, the wiring structure of the heater wire 64 and the lead wire wired in the heat insulating space 63 and the guide groove will be described in detail with reference to FIG. FIG. 6 is a schematic diagram showing the wiring structure of the lead wire and the heater wire (in FIG. 6, the packing 13 of the heat-insulating door 7 is in a removed state for explanation).

As shown in FIG. 6, power is supplied to the heater wire 64 in the sliding rubber 15 by a lead wire 28 provided in a guide groove 29 formed on the door frame 20 of the heat-insulating door 7.
First, the two lead wires 28 are connected from the power supply unit 68 installed on the side wall 4 of the prefabricated freezer 1 through the external wiring 69 to the heat insulating opening / closing door 8 through the wiring hole 70 provided in the right side surface portion of the heat insulating opening / closing door 8. Led in. Further, the lead wire 28 led from the wiring hole 70 is led from the upper edge to the lower edge of the heat insulating opening / closing door 8 through the guide groove 29, and from the wiring hole 71 formed in the heater mounting plate 58, the heat insulating space 63. Led in. The lead wire 28 led to the heat insulation space is connected to the heater wire 64 through the joint portion 66, and the heater wire 64 is arranged in an elliptical shape over substantially the entire upper surface of the heat insulation space 63.

  As described above, since the lead wire 28 that supplies power to the heater wire 64 is wired by passing through the guide groove 29 formed in the door frame 20, the guide groove 29 is fixed to the packing 13 when the door frame 20 is molded. It is possible to form by integral molding together with the insertion groove 27 for the purpose. Therefore, the wiring of the lead wire 28 is facilitated, the number of parts is reduced, and the cost can be reduced.

As described above in detail, in the prefabricated freezer 1 according to the present embodiment, the lead wire 28 that supplies power to the heater wire 64 is wired by passing through the guide groove 29 formed in the door frame 20. At the time of molding, the guide groove 29 can be molded by integral molding together with the insertion groove 27 for fixing the packing 13 and the like. Therefore, the wiring of the lead wire 28 can be facilitated, the number of parts can be reduced, and the cost can be reduced without requiring a separate dedicated member for forming the wiring path of the lead wire.
In addition, since the open portion 38 formed in the guide groove 29 is covered with the packing 13, there is no need to attach a member for fixing the lead wire 28 separately, and the lead wire 28 arranged in the guide groove 29 extends from the guide groove 29. It can be held so as not to come off.
Further, since the protrusion 39 is provided at the edge of the open portion 38 of the guide groove 29 in a direction intersecting with the direction in which the lead wire 28 is inserted into the guide groove (left and right direction in FIG. 4), the lead The lead wire 28 can be held so that the wire 28 is not detached from the guide groove 29. Therefore, it is possible to hold the lead wire 28 in the guide groove 29 without attaching a member for fixing the lead wire 28 separately.

The present invention is not limited to the above-described embodiment, and it goes without saying that various improvements and modifications can be made without departing from the spirit of the present invention.
For example, in this embodiment, the guide groove 29 is provided adjacent to the insertion groove 27 for fixing the packing 13, and the opening portion 38 is covered with the packing 13 when the packing 13 is fixed. However, it is also possible to arrange it with a certain distance from the insertion groove 27 so that the opening portion 38 is not covered with the packing 13. In that case, the lead wire 28 can be held by the protrusion 39 so as not to be detached.
Moreover, it is also possible to form only one groove in the door frame 20 having both the functions of the insertion groove 27 and the guide groove 29 without forming the insertion groove 27 and the guide groove 29 separately. is there.

It is a perspective view of the prefabricated freezer concerning this embodiment. It is the perspective view which showed the heat insulation opening / closing door of the prefabricated freezer which concerns on this embodiment. It is arrow sectional drawing which cut | disconnected the heat insulation opening / closing door by the line AA of FIG. 2 at the time of closing of a heat insulation opening / closing door. It is sectional drawing shown especially about packing vicinity of the heat insulation opening-and-closing door which concerns on this embodiment. It is arrow sectional drawing which cut | disconnected the heat insulation opening / closing door by the line BB of FIG. It is the schematic diagram shown about the wiring structure of a lead wire and a heater wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ......... Prefabricated freezer 2 ......... Insulation panel 6 ......... Installation surface 7 ......... Opening part 8 ......... Insulation door 13 ......... Packing 14 ......... Lower edge 15 ...... Rubber rubber 20 ......... Door frame 27 ......... Insertion groove 28 ......... Lead wire 29 ......... Guide groove 38 ......... Opening part 39 ......... Protrusion part 63 ......... Heat insulation space 64 ......... Heater wire 68 ………Power supply unit

Claims (3)

A heat insulating box surrounded by a heat insulating panel;
An opening provided on one side surface of the heat insulation box, the lower edge of which is open to the installation surface;
A heat-insulating door that opens and closes the opening;
A door frame forming a peripheral edge of the heat-insulating door,
A packing that is provided on the door frame and seals so that the cool air in the cabinet does not leak when the door is closed;
A sliding rubber that is provided at the lower edge of the heat-insulating door, and seals and insulates the lower edge of the opening when closed;
A heat insulating space formed at a lower edge of the heat insulating opening / closing door by the sliding rubber;
In a storage room that is provided in the heat insulation space and has a heater wire that is connected to a power source via lead wires at both ends,
A fixing portion provided on the door frame and fixing the packing;
A fixing portion for fixing the packing to the door frame and a guide groove formed integrally with the door frame;
The said lead wire is connected to the heater wire provided in the said heat insulation space while being wired to the said guide groove, The storage characterized by the above-mentioned. 2. The storage according to claim 1, wherein an opening portion of the guide groove to which the lead wire is wired is covered with packing by fixing the packing to the fixing portion. The protrusion is provided in the direction which cross | intersects the direction in which a lead wire is inserted in a guide groove in the edge part in the open part of the said guide groove where the said lead wire was wired. Item 3. The storage according to item 2.

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