JP2630873B2 - Door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device, and more particularly to a door device which can be used by reversing an opening direction by changing a pivot position with respect to a frame.

[0002]

2. Description of the Related Art Conventionally, this type of door apparatus has been widely used for freezing and refrigeration equipment such as refrigerators and refrigerated showcases in supermarkets and convenience stores. That is,
In such stores, it is necessary that the opening direction of the door can be arbitrarily selected depending on the location of the refrigerator or the like in relation to the wall surface or the passage, and in order to cope with this demand, the door is pivoted relative to the frame. It is configured so that the position can be changed and the opening direction can be reversed.

[0003] Further, in such a refrigerator, opening the door causes leakage of cool air, and there is a risk that the door may be damaged due to collision with a wall surface or the like. Therefore, it is necessary to regulate the opening angle within a certain range. On the other hand, it is necessary to keep the door open in order to deliver the product.

Therefore, conventionally, for example, Japanese Patent Application Laid-Open No. 63-55
No. 283 discloses an opening restricting member (referred to as a shock absorber 10 in this publication) to restrict the opening angle of the door within a range of approximately 90 degrees and to hold the door in an open state. It has such a configuration.

[0005]

However, the conventional structure disclosed in the above publication has the following disadvantages.
That is, since the shock absorber 10 is located near the hinge 2 and attached to the door frame 3, when the door is used upside down as described above, another one is provided on the door frame corresponding to the opposite side of the door. One shock absorber 10 must be provided, or another bracket 18 for mounting the shock absorber 10 must be installed.

Further, in the above-mentioned conventional structure, one end of the shock absorber 10 is simply fixed to the surface of the door. Therefore, when the door is opened with a vigor, for example, an excessive peeling force is applied to the constituent members of the door. And the door could be deformed.

The present invention solves the problems of the conventional structure,
It is an object of the present invention to provide a door device that can safely and reliably achieve the regulation of the opening angle of a door that is expected to be used reversely, and further reduce the number of parts.

[0008]

According to the present invention, the opening direction of the door 7 can be reversed by pivotally supporting one side of the door 7 on the frame 6 and changing the pivotal position with respect to the frame 6. In the door device 2, the fixture 56 is attached to the frame 6 at a position corresponding to the central portion between both sides of the door 7,
An L-shaped reinforcing member (corner reinforcing metal 15) is provided at least at the corner of the door 7, and one end of the opening restricting member 53 is rotatably supported by the fixing member 56 and the other end (shaft). 54) is rotatably and removably engaged with the hole 52 of the corner reinforcing metal 15 to regulate the opening angle of the door 7 within a predetermined range.

[0009]

The opening angle of the door 7 is regulated within a predetermined angle by the opening regulating member 53. Since the opening restricting member 53 is engaged with the L-shaped corner reinforcing metal, the door 7 is unlikely to be deformed even if an excessive peeling force is applied when the door 7 is opened.

On the other hand, when the door 7 is to be used in reverse, the shaft 54 of the opening restricting member 53 is removed from the hole 52 of the corner reinforcing metal fitting 15, and in this state, it is rotated around the fixing tool 56,
This time, by engaging the shaft 54 with the hole 52 of the corner reinforcing metal 15 at the corner of the door 7 pivotally supported on the opposite side, the opening restriction function can be exhibited.

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a refrigerator 1 to which the present invention is applied.
FIG. 2 is a partially cutaway perspective view of the door device 2 of the present invention, FIG. 3 is a transparent perspective view of the door device 2 in the upper hinge device 8, and FIG. 4 is a plan view of the door device 2 excluding the upper side of the frame 6. FIG. 5 shows the door device 2
The upper longitudinal sectional views are respectively shown.

The refrigerator 1 has a storage chamber 5 inside a heat-insulating box 4 that is opened forward, and cool air is supplied from a refrigerating device (not shown) into the storage chamber 5 to maintain a predetermined low temperature. Have been. The door device 2 basically includes a frame-shaped aluminum frame 6 attached to the opening edge of the heat-insulating box 4, and two doors pivotally supported by the frame 6 so that one side in the vertical direction is rotatable. 7 and 7. In FIG. 2, both doors 7, 7 are pivotally supported by an upper hinge device 8 and a lower hinge device 9 in a so-called double-opening manner, respectively. 7 on one side up and down
The opening direction can be changed by reversing the vertical direction.

The door 7 is made of an aluminum sash 11.
And inner glass 12A, middle glass 12B and outer glass 12
It comprises a triple glass made of C, a glass packing 14 made of a soft resin, a zinc die-cast, an L-shaped corner reinforcing metal fitting 15 as a reinforcing member inserted into the four corners of the door 7, and a handle 16.

The door 7 is vertically symmetrical so as to be used upside down as described above. Also, the upper hinge device 8
A power supply line to the heater 40 disposed in the door 7 is introduced from the sash 11 and is connected inside the cover 10 at the center of the sash 11.

The upper hinge device 8 includes an upper hinge 30 and a receiving member 3.
And 1. This receiving member 31 is used for the door 7 as described above.
4 is also mounted near the center of the upper side of the frame 6 on the opposite side of the door 7 as shown in FIG. on the other hand,
A plurality of lead wires 38 constituting a power supply line to a heater 40 inside the door 7 are movably inserted into the upper hinge 30. In this state, the upper hinge 30 has a straight pipe portion inserted into the inside of the sash 11 from a not-shown notch formed in the upper corner portion of the sash 11 earlier than the lead wire 38, and is formed on the vertical side of the corner reinforcing bracket 15. It is rotatably and removably inserted into the groove 28. The lead wire 38 drawn out from the lower end opening of the upper hinge 30 is inserted up to the center of the door 7, and is connected to the heater 40 inside the door 7 by the coupler 41 at the center of the sash 11. The coupler 41 is fixed to the inner surface of the cover 10 made of synthetic resin as shown in FIG. 3, and in this state, the cover 10 is detachably engaged with and attached to a window hole on the side surface of the sash 11 (not shown).

In this manner, 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 at the upper end of the upper hinge 30 is inserted into the receiver 31 from the front. . The receiving member 31 has a substantially portal shape having an inner size substantially equal to the outer size of the reinforcing plate 33, and holes 44 are formed in both side surfaces. The holes 44 and 44 and the through hole 36 formed in the upper hinge 30 are aligned with each other to
The upper hinge 30 is fixed to the frame 6 by inserting the retainer 46 into the tip of the pin stopper 45 after the insertion of the door 5 and the penetration, and the upper end of the door 7 is pivotally supported by the frame 6.

The end of the lead wire 38 drawn out from the upper end opening of the upper hinge 30 is pulled out rearward from the receiving member 31 and then in the guard plate 47 juxtaposed to the receiving member 31 on the side of the heat insulating box 4. Lead 48 and coupler 4
Connect at 9,50.

A fixture 56 having a pivot shaft 55 is attached to the upper side of the frame 6 corresponding to the upper center of the door 7. The rotation center shaft 55 of the fixture 56 and the hole 5 formed in the inner end of the horizontal side of the corner reinforcing metal 15 of the door 7
The opening restricting member 53 is attached over two spaces.

As shown in FIGS. 6 and 7, the opening restricting member 53 includes a first slide plate 60 having a longitudinal groove 58 and a leaf spring 59 at the distal end, and a shaft 54 extending below the distal end. And a second slide plate 62 having a roller 61 provided on both sides of the support plate 70 on the upper surface side of the base with a space therebetween, and a longitudinal groove 63 therebetween. The leaf spring 59 extends from the distal end of the first slide plate 60 to a position short of the groove 58, and a mountain-shaped convex portion 65 is bent at the end. A flat screw 66 is provided on the upper surface of the base end of the second slide plate 63.
Is attached, and this is the groove 58 of the first slide plate 60.
And a flat screw 67 is attached to the lower surface of the distal end portion of the first slide plate 60 so as to slidably engage with the groove 63 of the second slide plate 62 from above. The two slide plates 60 and 62 are assembled to be able to expand and contract by being combined. At this time, the roller 61 exists on the upper surface side of the first slide plate 60 and the first slide plate 60
It is slidable on the top.

The opening restricting member 53 is provided with the fixing member 56.
The base of the first slide plate 60 is pivotally supported on the rotation center shaft 55 from the lower surface so as to be freely rotatable, and is attached to the frame 6.
In this state, the shaft 54 of the second slide plate 62 is inserted into the hole 52 of the corner reinforcing metal 15 of the door 7 from above, and engages removably.

Next, the operation of the opening restriction member 53 will be described. When the door 7 is closed, the opening restricting member 53 is in the most contracted state as shown in FIG. 6 and is parallel to the door 7 between the frame 6 and the door 7 as shown by a broken line on the right side of FIG. When the door 7 is opened in this state, the roller 61 slides on the first slide plate 60 to approach the leaf spring 59, and the opening restricting member 53 is extended. Eventually, when the opening angle of the door 7 approaches approximately 90 degrees, the roller 61 comes into contact with the convex portion 65, and the leaf spring 59 is deformed downward by elasticity, and the roller 61 gets over the convex portion 65. At this point, the screw 66 reaches the end of the groove 58, and further extension is impossible.
As a result, the rotation of the door 7 is restricted within approximately 90 degrees.
Further, at this time, since the roller 61 is engaged with the convex portion 65, the door 7 is held in the open state. If the roller 7 is urged to rotate in the closing direction, the roller 61 gets over the convex portion 65, so that the holding state can be easily canceled.

As described above, since the expansion and contraction of the slide plates 60 and 62 are achieved by the sliding of the roller 61, deterioration due to wear is extremely reduced. Further, since the shaft 54 is engaged with the corner reinforcing metal member 15 having the strongest strength, even if the door 7 is vigorously opened, the risk of the door 7 being damaged is extremely small.

Next, when changing the opening direction by reversing the door 7 as shown by the broken line on the left side of FIG. 4, the shaft 54 is pulled upward from the hole 52 and the door 7 is pivotally supported on the opposite side. Then, the entire opening restricting member 53 is rotated about the rotation center shaft 55, and the shaft 54 at the tip thereof is brought to the left as shown by the broken line in FIG. The same opening angle regulation can be performed simply by inserting and engaging the hole 52 of the corner reinforcing metal fitting 15 at the corner (the one that was initially at the lower right corner).

In the embodiment, the release restricting member using the roller is employed. However, the present invention is not limited thereto, and a member having only a slidable engagement may be used. Further, in the embodiment, the door having glass is adopted, but the door is not limited thereto, and may be an ordinary steel door, or the like.
The door device of the present invention is also effective in a storage room or the like.

[0025]

According to the present invention, since the opening regulating member is engaged with the L-shaped reinforcing member provided at the corner of the door, an excessive peeling force is exerted when the door is opened. Even if added, the door is not easily deformed, and the door can be kept airtight.

Also, when the door is used in reverse,
By removing the other end of the opening restricting member from the reinforcing member, rotating the fixing member around the fixing member in that state, and engaging the other end with the reinforcing member of the door pivotally supported on the opposite side, a similar opening restricting function is performed. Can be demonstrated. Therefore, when the opening direction of the door is changed, it is not necessary to replace the opening restriction member one by one or to attach two opening restriction members in advance, so that the number of parts is reduced, the assembling workability is improved, and the operability is remarkable. Improvement can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a refrigerator.

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

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

FIG. 4 is a plan view of the door device excluding an upper side of a frame.

FIG. 5 is an upper longitudinal sectional view of the door device.

FIG. 6 is a side view of the opening restricting member and the fixing member with the door closed.

FIG. 7 is a side view of the opening restricting member and the fixing tool with the door opened.

[Explanation of symbols]

 2 Door device 6 Frame 7 Door 8 Upper hinge device 15 Corner reinforcing bracket 52 Hole 53 Opening restricting member 54 Shaft 56 Fixture 60 First slide plate 61 Roller 62 Second slide plate

Claims (1)

(57) [Claims] 1. A door device wherein one side of a door is pivotally supported on a frame so as to be rotatable, and the opening direction of the door can be reversed by changing a pivot position with respect to the frame. A fixing member attached to the frame at a position corresponding to the center of the door, an L-shaped reinforcing member provided at least at a corner of the door, and one end rotatably attached to the fixing member. An opening control member pivotally supported and having the other end pivotally and detachably engaged with the reinforcing member to restrict an opening angle of the door within a predetermined range.