JPH0533546A - Hinge - Google Patents

Abstract

PURPOSE:To prevent wires to electric parts inside the door from breaking due to the fatigue thereof and facilitate the assembling and fitting works. CONSTITUTION:A door is supported at a frame to be freely rotatable. The upper hinge device 8 is constituted of a receiver 31 fixed on the frame and the upper hinge 30 rotatably fitted to the door. And a lead wire 38 is inserted to be freely transferable in the pipe 32 of the upper hinge 30. The upper hinge device 30 is composed of a pipe 32, a coated layer 35, having a small superficial friction force, formed on the periphery of the pipe 32 as a unit, and a reinforced plate 33 closely attached as a unit at the outer face of the coated layer 35 and detachably fixed to the receiver 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device, and more particularly to a hinge device through which electric wires for electric parts in a door pass.

[0002]

2. Description of the Related Art Conventionally, this type of hinge device has been widely used in doors of refrigerating machines such as refrigerators and refrigerating showcases. For example, in Japanese Patent Laid-Open No. 62-112875, there is adopted a structure in which a power supply line for supplying power to a dew condensation preventing heater as an electric part provided in a door is molded with synthetic resin and integrally molded with a hinge assembly. Has been.

According to this structure, the insulation of the conductor wire is achieved,
Moreover, by hiding the conductor wire from the outside, the appearance can be adjusted, and further, the bending operation of the conductor wire due to the opening and closing of the door can be eliminated to reduce abrasion.

[0004]

However, such a conventional structure has the following drawbacks. That is, since the lower end of the conductive wire is connected to the door heater or the like, the conductive wire is twisted as the door is opened and closed. On the other hand, since the upper part of the conductive wire is connected to the hinge assembly, the conductive wire is twisted around the position (socket 110 portion in the above publication) that comes out of this hinge assembly as a fulcrum, and a disconnection occurs due to metal fatigue at this portion. ..

The present invention solves the problems of the conventional structure,
An object of the present invention is to provide a hinge device that prevents disconnection of electric wires to electric components in a door due to fatigue, and that is easy to assemble and install.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a hinge device (upper part) which pivotally supports a door 7 on a frame 6 and through which an electric wire (lead wire) 38 to an electric component inside the door 7 passes is provided. A hinge (upper hinge) for rotatably engaging the hinge device 8) with the receiving member 31 fixed to the frame 6 and the door 7.
The upper hinge 30 includes a pipe 32 into which a lead wire 38 is movably inserted, a coating layer 35 formed integrally around the pipe 32 and having a small surface friction resistance, and an outer surface of the coating layer 35, which is integrally adhered. The reinforcing plate 33 is detachably fixed to the receiving member 31.

[0007]

Since the lead wire 38 passes through the inside of the upper hinge 30, it is not exposed to the outside. A twisting force is applied to the lead wire 38 as the door 7 is opened and closed. However, since the lead wire 38 can freely move inside the pipe 32 of the upper hinge 30, the twisting force is concentrated at one point and local fatigue occurs. It never happens. Further, the upper hinge 30 is formed by integrally molding the pipe 32, the coating layer 35, and the reinforcing plate 33. The door 7 can be formed by simply engaging the reinforcing plate 33 with the receiving member 31 on the frame 6 side.
Can be attached to the frame 6.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a perspective view of a refrigerator 1 to which the present invention is applied,
2 is a partially cutaway perspective view of the front door device 2 of the refrigerator 1, FIG.
Shows a perspective perspective view of the door device 2 of the upper hinge device 8 part as the hinge device of the present invention, and FIG. 4 shows an exploded perspective view of the same part.

The refrigerator 1 has a storage chamber 5 inside a heat insulating box 4 which is open to the front. Cooling air is supplied from a refrigerating device (not shown) into the storage chamber 5 to maintain a predetermined low temperature. Has been done. The door device 2 is basically a frame-shaped aluminum frame 6 attached to the opening edge of the heat insulating box body 4, and two doors pivotally supported by the frame 6 on one side in the vertical direction. 7 and 7. In FIG. 2, both doors 7 and 7 are pivotally supported by an upper hinge device 8 and a lower hinge device 9 in a so-called double-door type, but the mounting positions of the upper and lower hinge devices 8 and 9 with respect to the frame 6 are the other. It is possible to change the opening direction by changing one side up and down and reversing the door 7 upside down.

This door 7 is made of aluminum sash 11
And inner glass 12A, middle glass 12B and outer glass 12
It is composed of a triple glass made of C, a glass packing 14 made of a soft resin, an L-shaped corner reinforcing metal fitting 15 and a handle 16 which are made of zinc die-cast and are inserted into the four corners of the door 7. The door 7 is vertically symmetrical so that it can be used upside down as described above. Also, the upper hinge device 8
As will be described later, a power supply wire (lead wire) to the heater as an electric component arranged in the door 7 is introduced and connected inside the cover 10 at the center of the sash 11.

The upper hinge device 8 includes an upper hinge 30 and a receiver 3.
1 and 1. As described above, the receiving member 31 has the door 7
In order to reversely use the above, although not shown, it is also arranged near the center of the upper side of the frame 6. On the other hand, the upper hinge 30 is, as shown in FIG. 5, a pipe 32 made of stainless steel, a nylon covering layer 35 surrounding the outer surface of this pipe 32 and having a small surface friction resistance, and a reinforcement provided at the upper end of the covering layer 35. It is composed of a plate 33.

As shown in FIGS. 6 and 7, the pipe 32 is formed by bending a straight tubular pipe upper part at a right angle with a predetermined bending radius, and has a flat cross section to increase its strength. The reinforcing plate 33 is a steel plate having a substantially gate-shaped cross section as shown in FIGS. 8 to 10, and holes 34 are formed on both side surfaces. The pipe 32 and the reinforcing plate 33 are set in a mold having a predetermined shape, and the nylon resin stock solution is injected and solidified between the periphery of the pipe 32 excluding the upper and lower open ends and between the reinforcing plate 33 and the pipe 32 to cover the pipe 32. Layer 35 and reinforcing plate 3
3 is integrally molded. At this time, the holes 34, 3 of the reinforcing plate 33
A through hole 36 is formed between the four.

Further, since the lower end of the pipe 32 and the central portion of the straight pipe portion are held at the time of molding, the central portion of the straight pipe portion of the pipe 32 is exposed and the groove 37 is formed in the coating layer 35. It By utilizing this groove 37 and storing silicon grease for lubrication therein, the door 7 can be smoothly rotated.

The pipe 32 of the upper hinge 30 has a door 7
A plurality of lead wires 38 forming a power supply line to a heater (electrical part) inside are movably inserted. In this state, the upper hinge 30 has a straight pipe portion inserted into the sash 11 through a notch hole 27 formed by notching the lead wire 38 at the upper corner portion of the sash 11, and a groove formed on the vertical side of the corner reinforcing metal fitting 15. It is inserted into 28 so that it can be rotated and inserted and removed freely. The lead wire 38 drawn out from the lower end opening of the pipe 32 is inserted up to the central portion of the door 7, and is connected by the heater 40 inside the door 7 and the coupler 41 at the window hole 39 portion formed in the side surface of the central portion of the sash 11. To be done. The coupler 41 is fixedly held on the inner surface of the synthetic resin cover 10 as shown in FIG. 3, and in that state, the cover 10 is detachably engaged with the window hole 39 to close the window hole 39. Since the coupler 41 is held by the cover 10, the insulating property is improved.

In this way, the upper hinge 30 is attached to the door 7,
After the lower end of the door 7 is pivotally supported on the frame 6 by the lower hinge device 9, the upper end opening of the pipe 32 of the upper hinge 30 is directed rearward, and the reinforcing plate 33 is inserted into the receiver 31 from the front. The receiving member 31 has a substantially gate shape having an inner dimension that is substantially equal to the outer dimension of the reinforcing plate 33, and holes 44 are formed on both side surfaces. The holes 44, 44 and the through hole 36 of the upper hinge 30 are aligned, the pin stopper 45 is inserted, and the stopper 46 is inserted into the tip of the pin stopper 45 after the penetration to fix the upper hinge 30 to the frame 6 and the door 7 The upper end is pivotally supported on the frame 6.

The end portion of the lead wire 38 pulled out from the upper end opening of the pipe 32 of the upper hinge 30 is pulled out rearward from the receiving member 31, and then the guard plate 4 juxtaposed on the receiving member 31.
A lead wire 48 drawn out from the heat insulating box 4 side in 7 is connected by couplers 49 and 50.

Here, as the door 7 is opened and closed, the lead wire 38
A twisting force is applied to. However, lead 3
Since 8 is movably inserted in the pipe 32 and is not connected to the upper hinge 30 anywhere, when the portion of the lead wire 38 on the cover 10 side is twisted by the rotation of the door 7, the coupler 50 The leads 38 from 41 to 41 are free to move within the pipe 32. Therefore, the twisting force is not concentrated on the local portion of the lead wire 38, and therefore the risk of disconnection is extremely small. Further, since the pipe 32 is bent at a predetermined bending radius, the lead wire 3 in this portion is bent.
No breakage of 8 also occurs.

A shaft 54 of an opening restricting member 53 for restricting the opening angle of the door 7 is inserted into a hole 52 formed at the inner edge of the horizontal side of the corner reinforcing metal fitting 15 to open the door 7 at about 90 degrees. The structure is regulated by degree.

In addition, although the hinge device of the present invention is applied to the door having glass in the embodiment, it is not limited thereto, and may be an ordinary steel door or the like, and it is not limited to a refrigerator, but a freezer or a hot storage. The hinge device of the present invention is also effective in a warehouse or the like.

[0020]

According to the present invention, the electric wires to the electric parts inside the door pass through the inside of the hinge and are not exposed to the outside, so that the appearance is improved and the damage due to the impact from the outside is less likely to occur. .. In addition, the twisting force is applied to the wire as the door is opened and closed, but since the wire can move freely inside the pipe of the hinge, the twisting force is concentrated at one point, and local fatigue does not occur. This can reduce the risk of disconnection.

Further, since the hinge is formed by integrally forming the pipe, the covering layer and the reinforcing plate, the number of parts and the number of assembling steps can be reduced, and the reinforcing plate is received on the frame side. Since the door can be pivotally supported on the frame only by engaging with the tool, the attachment work can be smoothly performed when the door is inverted and attached.

[Brief description of drawings]

FIG. 1 is a perspective view of a refrigerator.

FIG. 2 is a partially cutaway perspective view of a door device.

FIG. 3 is a transparent perspective view of a door device of an upper hinge device portion.

FIG. 4 is an exploded perspective view of a door device of an upper hinge device portion.

FIG. 5 is a side view of the upper hinge.

FIG. 6 is a front view of a pipe.

FIG. 7 is a side view of the pipe.

FIG. 8 is a side view of the reinforcing plate.

FIG. 9 is a front view of a reinforcing plate.

FIG. 10 is a bottom view of the reinforcing plate.

[Explanation of symbols]

 2 Door device 6 Frame 7 Door 8 Upper hinge device 30 Upper hinge 31 Receiving device 32 Pipe 33 Reinforcing plate 35 Covering layer 38 Lead wire 40 Heater 45 Pin stopper

Claims (1)

Claim: What is claimed is: 1. A hinge device that pivotally supports a door on a frame and through which an electric wire to an electric component inside the door passes, the receiver being fixed to the frame. And a hinge that rotatably engages with the door, the hinge including a pipe through which the electric wire is movably inserted, a coating layer integrally molded around the pipe and having a small surface friction resistance, and the coating layer. A hinge device comprising: a reinforcing plate that is integrally attached to an outer surface and is detachably fixed to the receiving member.