JPH08233442A - Door structure of refrigerator - Google Patents

Abstract

PURPOSE: To provide a door structure which has a sufficient rigidity entirely by fixing a reinforcing member at an arbitrary position. CONSTITUTION: A door panel 8 is so arranged to have an outer shell body 11 formed by a blow molding filled with a foam urethane resin. A mounting groove 16 is arranged on a rear plate 13 of the outer shell body 11 along a longitudinal rim part thereof. A reinforcing member 15 is made of metal and formed in an angle. A plurality of insertion holes 19 for screws 20 are formed in one bent part 18 of the reinforcing member 15 at an interval. When the other bent part 17 of the reinforcing member 15 is put into the mounting groove 16, the one bent part 18 contacts the rear plate 13. The reinforcing member 15 is fixed on the rear of the door panel 8 by screwing the screws 20 in through the insertion holes 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator door structure, and more particularly to a door structure having an improved reinforcing portion of a door panel.

[0002]

2. Description of the Related Art Conventionally, a refrigerator shown in FIG. 8 is known as a refrigerator mounted on a vehicle such as a courier service.
In this refrigerator, by assembling a plurality of panels, a box-shaped cabinet main body 51 having an opening on the front side of the upper surface is formed, and the inside of the cabinet main body 51 is partitioned by a partition plate 52 at an intermediate position in the lateral width direction. As a result, the refrigerating chamber 53 and the freezing chamber 54 are defined on the left and right sides, and the front opening of the upper surface forms the entrances and exits 55 and 56 of the luggage of the refrigerating chamber 53 and the freezing chamber 54. The door panel 57 is provided at each of the doorways 55 and 56.
However, it is attached so that it can be swung open / closed via a hinge.

The door panel 57 has a sandwich structure in which urethane foam resin serving as a heat insulating material is sandwiched between front and back boards made of synthetic resin, like the panels constituting the cabinet main body 51, and is generally rigid. Since it is inferior, it is necessary to reinforce it.

Conventionally, as a reinforcing means, as shown in FIG. 9, a cover 58 for covering each exposed end surface of the door panel 57 is used to attach a metallic reinforcing member 59 to each corner. It was Specifically, FIG.
As shown in FIG. 5, the angle-shaped reinforcing member 59 is fixed to the inner surface of the cover 58 with the screw 60, and the four covers 58 are attached to the peripheral edges of the front and back boards 61, 61 which are arranged at intervals. After that, the urethane foam resin 62 was filled inside.

[0005]

However, in the conventional reinforcing structure, since the reinforcing member 59 is only provided at the corner portion, it cannot be said that the reinforcing member 59 is sufficiently reinforced. Further, since the position where the reinforcing member 59 is attached is limited to the cover 58, there is a drawback that the degree of freedom in selecting a reinforcing portion is small.

The present invention was completed in view of the above circumstances, and an object thereof is to provide a door structure in which a reinforcing member is fixed at an arbitrary position and sufficient rigidity can be obtained over the entire surface. To do.

[0007]

As a means for achieving the above object, the invention of claim 1 is a door that is openably and closably attached to a doorway of a refrigerator, and is attached to an outer surface of a door panel made of synthetic resin. The groove is recessed, and in the mounting groove,
It is characterized in that the metal reinforcing member is fitted and fixed.

According to a second aspect of the present invention, in the first aspect of the present invention, the door panel is constructed by filling a heat insulating material in an outer shell made of synthetic resin formed by blow molding. Is characterized in that the mounting groove is recessed, and the reinforcing member is fitted into the mounting groove and is fixed by a fixing member.

[0009]

According to the first aspect of the present invention, the reinforcing member is fitted and fixed in the mounting groove formed at an arbitrary position on the outer surface of the door panel. In the invention of claim 2, a mounting groove is provided at an arbitrary position of the outer shell of the door panel formed by blow molding, and a reinforcing member is fitted therein and fixed by a fixing member.

[0010]

According to the first aspect of the invention, the rigidity is increased by providing the mounting groove on the outer surface of the door panel, and the metal reinforcing member is fitted in the mounting groove, so that the rigidity is improved. Since the mounting position of the reinforcing member can be significantly increased, it is possible to secure sufficient rigidity over the entire surface. Also, since the reinforcing member is fitted in the mounting groove and has a structure that does not stick out on the outer surface, there is no risk of catching hands, etc.
In addition, there is an effect that it can be organized into a neat appearance.

According to the second aspect of the present invention, in addition to the above effects, the rigidity can be sufficiently increased for a door panel that can be easily and inexpensively manufactured by employing blow molding.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a vehicle-mounted refrigerator will be described below with reference to the accompanying drawings. <First Embodiment> FIGS. 1 to 3 show a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a cabinet main body, which has a stepped box shape in which an upper surface is opened and the inner side of the upper surface is raised, and a double wall structure formed by rotary molding. The resin outer shell is formed by filling urethane foam resin, which serves as a heat insulating material.

A partition plate 2 is inserted inside the cabinet body 1 at an intermediate position in the widthwise direction, so that the left side of the cabinet body 1 in FIG. 1 is a refrigerating room 3 and the right side is a freezing room 4.
Is defined in. Further, a step plate 5 provided with a receiving edge of a door panel 8 which will be described later is stretched on the stepped portion of the upper surface, and an upper surface plate 6 is stretched on the upper surface of the raised portion on the back side. .

As described above, the entrances 7 of the refrigerating room 3 and the freezing room 4 are provided on the front upper surface of the cabinet body 1.
The door panel 8 is attached to each of the entrances and exits 7 via hinges 25 so that the door panel 8 can be freely rocked and opened to the rear side. Each door panel 8 includes the partition plate 2 and the step plate 5 described above.
As with the upper plate 6, as shown in FIG. 3, the outer shell body 11 made of synthetic resin formed by blow molding is filled with the urethane foam resin 12.

A cooling unit (not shown) is installed in each of the raised parts in the deep inside of the refrigerating room 3 and the freezing room 4, and the inside of each room 3, 4 is opened through the doorway 7 by opening the door panel 8. Luggage is taken in and out of
The luggage stored in each of the chambers 3 and 4 is kept in a refrigerated or frozen state by the cold air circulated and supplied from each cooling unit.

Next, details of the door structure will be described again. On the back plate 13 of the outer shell 11 of the door panel 8, a plurality of reinforcing ridges 14 are provided so as to be spaced from each other along the front-rear direction (vertical direction in FIG. 2). Since the rigidity of the door panel 8 cannot be sufficiently obtained only by these reinforcing ridges 14, the reinforcing member 15 is attached as follows.

As shown in detail in FIGS. 2 and 3, the outer shell 11
On the back plate 13, two mounting grooves 16 for mounting the reinforcing member 15 are provided along substantially the entire width along the front and rear edges. The both sides of the opening of the mounting groove 16 are rounded so that the reinforcing member 15 can be easily inserted. The reinforcing member 15 is made of metal and is formed in an angle shape. The reinforcing member 15 has a narrower bent portion 17 that can be inserted into the mounting groove 16 to the bottom portion in a substantially tight manner. At this time, the wider bent portion 18 contacts the back plate 13. It is supposed to be contacted. A plurality of insertion holes 19 for screws 20 are formed in the wide bending portion 18 of the reinforcing member 15 at appropriate intervals along the length direction.

The back plate 13 of the outer shell 11 is provided with a fitting groove 22 around the entire circumference thereof, and a packing 23 is fitted in the fitting groove 22. There is. The packing 23 is for keeping airtightness of the doorway 7 by being pressed against the edge of the doorway 7 when the door panel 8 is closed. Further, a mounting metal fitting 24 for mounting the hinge 25 is embedded and attached to the rear edge of the outer shell 11 (right end in FIG. 3).

This first embodiment has the structure as described above, and when the outer shell 11 is filled with the urethane foam resin 12 to form the door panel 8, as shown in FIGS. The bent portion 17 on the narrow side of the reinforcing member 15 is inserted into each of the mounting grooves 16. At this time, since the opening side edge of the mounting groove 16 is rounded, the reinforcing member 15 can be inserted smoothly. When the bent portion 17 on the narrow side is inserted, the bent portion 18 on the wide side is applied to the back surface of the door panel 8, so that the screw 20 is inserted into each insertion hole 19 of the reinforcing member 15.
The reinforcing member 15 is fixed by screwing it toward the door panel 8 through. After that, the fitting groove 2 of the door panel 8
By assembling the packing 23 to 2 and attaching the hinge 25 via the mounting metal fitting 24 at the rear edge, the assembly of the door is completed.

As described above, according to the first embodiment, the rigidity is increased by providing the mounting groove 16 on the rear surface of the door panel 8, and the reinforcing groove 1 made of metal is further provided in the mounting groove 16.
Since 5 is fitted and fixed, the rigidity of the door panel 8 is significantly increased over the entire surface thereof. Moreover,
Since the reinforcing member 15 is mounted on the back surface of the door panel 8, the degree of freedom of the mounting position is extremely large, and it is possible to reinforce the portion having poor rigidity.

Further, in the reinforcing member 15, the bent portion 17 on the narrow side is inserted into the mounting groove 16, and the bent portion 1 on the wide side is formed.
Since 8 is fixed substantially flush with the back surface of the door panel 8 and does not stick out on the back surface of the door panel 8, there is no risk of catching hands when opening the door panel 8 and putting in and taking out luggage, which is safe. Also, it is organized in a neat appearance.

Further, in this embodiment, a screwing method is used to fix the reinforcing member 15, and the outer shell 11 of the door panel 8 is softer than the screw 20, so that the outer shell 11 is fixed. Even if the pilot hole is not formed in the
As long as the insertion hole 19 for the screw 20 is opened in the
The reinforcing member 15 can be fixed simply by screwing it through the insertion hole 19, that is, the fixing work of the reinforcing member 15 can be easily performed.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. In this example,
As shown in FIGS. 4 and 5, a mounting groove for mounting the reinforcing member 31 on the back plate 13 of the outer shell body 11 of the door panel 30 similar to that of the first embodiment along the front edge and the left and right side edges. 32 is recessed. This mounting groove 32 is
It is formed wider than the mounting groove 16 of the first embodiment, and both opening side edges thereof are rounded. Further, on both sides of each mounting groove 32, mounting seat surfaces 33 that are lowered by one step are formed.

The reinforcing member 31 mounted in the mounting groove 32 is made of metal, and as shown in FIG.
The mounting plate 36 has a cross-sectional shape formed on both side edges of one surface so as to be flush with the surface, and three pieces corresponding to the length of each mounting groove 32 are prepared. Each reinforcing member 31
The square tubular portion 35 is tightly fitted to the bottom of the corresponding mounting groove 32, and at that time, both mounting plates 36 are brought into contact with the mounting seat surface 33. A plurality of rivet holes 37 are formed in both mounting plates 36 of the reinforcing member 31 at appropriate intervals along the length direction.

A fitting groove 38 is also formed on the back plate 13 along the periphery thereof, and a packing 39 is fitted therein. The other structure is the same as that of the first embodiment, and the same members are designated by the same reference numerals as those of the first embodiment and the duplicated description is omitted.

The process of attaching the reinforcing member 31 to the door panel 30 in the second embodiment is as follows. When the filling of the urethane foam resin 12 into the outer shell 11 is completed,
As shown in FIG. 5, a pilot hole 41 is formed in each of the mounting seat surfaces 33 on the back surface so as to correspond to the rivet holes 37 formed in the mounting plate 36 of the reinforcing member 31. Then, the rectangular tube portion 3 of the reinforcing member 31.
5 is fitted in the corresponding mounting groove 32. At that time, mounting groove 3
Since the edges of both openings 2 are rounded, the reinforcing member 31 can be fitted smoothly. Reinforcement member 3
When the fitting of 1 is completed, both mounting plates 36 are attached to the mounting seat surface 33.
And the rivet hole 37 and the pilot hole 41 are aligned.
Then, the rivet 43 is driven through both the holes 37 and 41.

As shown in FIG. 7 (A), the rivet 43 has an iron core wire 46 inserted into a tubular aluminum body 44 having a rivet head 45 at one end.
The head 47 provided at the tip thereof is assembled in a state of being locked to the other end of the main body 44 on the side where the rivet head 45 is not provided. Then, using a dedicated tool, as shown in FIG. 3B, the rivet 43 is bited into the relatively soft urethane foam resin 12, and both holes 37, 41 are formed.
And then pull the core wire 46. Then, as shown in FIG. 7C, the head 47 pushes the other end of the main body 44 to form a new rivet head 48 while the core wire 46 is cut in the middle, and a new rivet head 48 is formed. The mounting plate 36 and the back plate 13 are sandwiched between them. Thereby, the reinforcing member 31 is fixed to the outer shell 11.

Also in this second embodiment, the reinforcing member 31 is used.
The rigidity of the door panel 30 is significantly increased by mounting the mounting member, and the degree of freedom of the mounting position of the reinforcing member 31 is also large. Further, the reinforcing member 31 has the rectangular tubular portion 35 inserted into the mounting groove 32, the mounting plate 36 is fixed on the mounting seat surface 33, and does not stick out on the back surface of the door panel 30. As well as being secured, it looks neat and tidy. Particularly, the rivet 43 is attached to the fixing member of the reinforcing member 31.
By using, there is an advantage that the reinforcing member 31 can be more firmly fixed.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention.

(1) In each of the above embodiments, the reinforcing member is attached to the back side of the door panel, but it is also possible to attach the reinforcing member to the front side of the door panel. (2) Further, the present invention can be applied not only to a vehicle refrigerator but also to a door structure of a refrigerator in general.

[Brief description of drawings]

FIG. 1 is an external perspective view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a door.

FIG. 3 is a partially cutaway sectional view of a door.

FIG. 4 is an exploded perspective view of a door according to a second embodiment.

FIG. 5 is a partial cross-sectional view of a state before mounting the reinforcing member.

FIG. 6 is a partial cross-sectional view of the state after the attachment.

FIG. 7 is a partial cross-sectional view showing a fixing process using rivets.

FIG. 8 is a perspective view of a refrigerator according to a conventional example.

FIG. 9 is a perspective view of the door.

FIG. 10 is a partial cross-sectional view showing a mounting structure of a reinforcing member.

[Explanation of symbols]

 3 ... Refrigerating room 4 ... Freezing room 7 ... Doorway 8 ... Door panel 11 ... Outer shell 12 ... Urethane foam resin (heat insulating material) 13 ... Back plate (of outer shell 11) 15 ... Reinforcing member 16 ... Mounting groove 20 ... Screw (Fixing member) 30 ... Door panel 31 ... Reinforcing member 32 ... Mounting groove 43 ... Rivet (fixing member)

Claims (2)

[Claims] 1. In a door that is openably and closably mounted on a doorway of a refrigerator, a mounting groove is provided on an outer surface of a synthetic resin door panel, and a metal reinforcing member is fitted and fixed in the mounting groove. Refrigerator door structure characterized by being. 2. The door panel is configured by filling a heat insulating material in a synthetic resin outer shell formed by blow molding, and the mounting groove is provided in the outer shell, and the mounting groove is formed. 2. The door structure for a refrigerator according to claim 1, wherein the reinforcing member is fitted inside and is fixed by a fixing member.