JPS6017489Y2 - door device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a door device with an improved hinge structure.

Conventionally, for example, in a refrigerator, a hinge body with a hinge shaft protruding from the bottom of one side of an opening of a heat-insulating casing is attached, and a support hole is installed on the lower surface of the pivot base end side of the door for opening and closing the opening. The hinge shaft is inserted into the support hole and supported, but the diameter of the support hole of the door is limited by the relationship with the thickness of the door, so it is not necessary to make it that large. Therefore, the thickness (outer diameter) of the hinge shaft inserted through this insertion hole cannot be made very large, and there are problems in terms of strength such as the hinge shaft frequently breaking. Ta.

The present invention has been made in view of the above circumstances, and its purpose is to provide a door device whose strength can be improved so that the hinge shaft will not break.

Hereinafter, an embodiment of the present invention applied to a refrigerator will be described with reference to the drawings.

First, the overall configuration of the refrigerator will be described according to FIG.

Reference numeral 1 denotes a rectangular box-shaped heat insulating case, and a hinge mechanism 5 is provided at the opening 2 on the front side of the case to open and close the door 3.
, 6 so as to be rotatable in the front and rear directions.

In the door 3, a handle 9 is attached to the upper part of the free end 8 side of the front surface 7, and a gasket 11, for example, a magnet gasket 11, is attached to the peripheral part of the back surface 10 side of the door 3.
When the opening 2 is closed, it comes into close contact with the periphery of the opening 2.

Now, regarding the lower hinge mechanism 5, see FIGS. 2 to 4.
Explain according to the diagram.

Reference numeral 12 denotes a metal hinge body having a substantially inverted letter shape, and a substantially short cylindrical support hole 13 is formed in the horizontal part thereof to protrude upward by burring process, and a stopper claw part is formed by cutting process. 14 is formed to protrude upward.

The vertical portion of the hinge body 12 is attached to the lower right side of the opening 2 of the heat insulating housing 1 with bolts 15 or the like.

16 is an auxiliary hinge body made of plastic, and a cylindrical support protrusion 17 is integrally molded upward on one side of the upper surface, and the support protrusion 1 is formed on the other side of the lower surface.
A hinge shaft 18 having a cylindrical shape with a diameter smaller than that of the hinge shaft 7 is integrally molded facing downward.

Further, an engagement piece 19 is integrally molded on one end of the auxiliary hinge body 16 so as to be substantially parallel to one side thereof, and the hinge body is formed on the lower surface of the distal end of the retaining piece 19. 12
A substantially wedge-shaped claw portion 20 that can engage with the stopper claw portion 14 is formed.

An oil sump recess 21 is formed on the top surface of the tip of the retaining piece 19, spanning the claw 20, and a slit-shaped oil supply hole penetrating downward is formed at the bottom of the oil sump recess 21. 22 is formed.

Further, a hinge shaft 18 is provided on the lower surface of the auxiliary hinge body 16.
An annular fitting groove 23 surrounding the protruding base of the
is formed, and this fitting groove 23 is formed in the hinge body 1.
It can fit into the outer periphery of the support hole 13 of No. 2.

Furthermore, a stopper piece 24 is integrally molded on the other side of the auxiliary hinge body 16 opposite to the engagement piece 19, and this stops at the locking edge of the hinge body 12 as will be described later. 25.

As described above, the auxiliary hinge body 16 integrally molded from plastic is attached to the pivot base end 4 side of the lower surface 26 of the door 3 with a bolt 27, and when this attachment is done, the support protrusion 17 is Front surface 7 and back surface 1 of the lower surface 26 of the door 3
It is inserted into an insertion hole portion 28 formed at an intermediate portion between the holder and the holder.

2, the hinge shaft 18 of the auxiliary hinge body 16 attached to the lower surface 26 of the door 3 is inserted into the support hole 13 of the hinge body 12.
The fitting groove portion 23 is fitted and supported on the outer periphery of the support hole portion 13 .

Although the upper hinge mechanism 6 is not shown in detail, it is also substantially the same as the lower hinge mechanism 5, and has a support hole similar to the support hole 13 of the hinge body 12. It includes a hinge body 29 attached to the top surface of the door 3, and an auxiliary hinge body having a support protrusion and a hinge shaft similar to the support protrusion 17 and hinge shaft 18 of the auxiliary hinge body 16, and the auxiliary hinge body is attached to the top surface of the door 3. At this time, the support protrusion of the auxiliary hinge body is inserted into the insertion hole formed in the upper surface 30 in the same manner as the insertion hole 28 of the lower surface 26, and the auxiliary hinge body The hinge shaft is inserted through and supported in the support hole of the hinge body 29.

As described above, when the door 3 pivotally installed in the opening 2 of the heat insulating case 1 is pulled forward via the handle 9, it rotates in the direction of arrow A around the axis of the hinge shaft 18. to open the opening 2, the stopper piece 24 of the auxiliary hinge body 16 is locked to the locking edge 25 of the hinge body 12, and the opening angle is regulated. Then, the hinge shaft 18 rotates in the opposite direction of the arrow A to close the opening 2, and the magnetic gasket 11 is attracted to the peripheral part 31 of the opening 2, and the auxiliary hinge body 16 is The claw portion 20 of the engagement piece portion 19 engages with the stopper claw portion 14 of the hinge body 12.

The claw portion 20 of this engagement piece portion 19 and the stopper claw portion 1
4, lubricating oil such as grease or petrolatum, which has been injected and stored in the oil reservoir recess 21 in advance, is supplied from the oil supply hole 22 to the stopper claw 14 portion.

As described above, according to this embodiment, the hinge shaft 18 is provided protruding from the lower surface of the auxiliary hinge body 16 attached to the door 3, and the fitting groove 23 is formed so as to surround the protruding base of the waist hinge shaft 18. is inserted into the support hole 13 of the hinge body 12 and the fitting groove 23 is fitted and supported on the outer periphery of the support hole 13, so that the supporting portion of the door 3 is substantially the outer periphery of the support hole 13. This is the fitting part between the fitting groove part 23 and the load of the door 3 is received here. Therefore, the mechanical strength of the supporting part is improved compared to the conventional case where the hinge shaft is inserted and supported through the insertion hole on the lower surface of the door. It can be greatly improved,
As a result, the hinge shaft 18 functions to prevent it from coming out from the support hole 13, and is not subjected to any load, so that problems such as breakage do not occur at all.

Moreover, according to this embodiment, even if the auxiliary hinge body 16 is attached to the lower surface 26 of the door 3 by the port 27,
Since the support protrusion 17 formed on the upper surface of the auxiliary hinge body 16 is inserted through the insertion hole 28 on the lower surface 26, the load is not concentrated only on the bolt 27 portion and is applied to the support protrusion 17 portion. Also, the mounting strength of the auxiliary hinge body 16 can be ensured sufficiently.

By the way, in the above embodiment, the diameters of the support hole 13 of the hinge body 12, the hinge shaft 18 of the auxiliary hinge body 16, and the fitting groove 23 are set independently of the thickness dimension of the door 3. Therefore, even if the auxiliary hinge body 16 is made of plastic, no problem will arise in terms of strength.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and may be modified as appropriate without departing from the scope of the invention, for example, it may be applied not only to refrigerators but also to door devices for cabinets in general. Of course, it can also be implemented.

As explained above, in the present invention, the hinge shaft of the auxiliary hinge body attached to the door is inserted into the support hole of the hinge body, and the fitting groove is fitted and supported on the outer periphery of the support hole. This prevents the hinge shaft from breaking and improves the strength of the support part.Furthermore, since the supporting protrusion of the auxiliary hinge body is inserted into the insertion hole of the door, the auxiliary hinge body is not easily attached to the door. This provides practical effects such as ensuring sufficient mounting strength.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view of a refrigerator, FIGS. 2 and 3 are longitudinal views and exploded perspective views of the hinge mechanism, and FIG. 4 is a stopper claw and an exploded perspective view. FIG. 3 is a longitudinal cross-sectional view of a retaining piece portion. In the drawings, 1 is a heat insulating housing, 2 is an opening, 3 is a door, 5 is a hinge mechanism, 12 is a hinge body, 13 is a support hole, 16 is an auxiliary hinge body, 17 is a support protrusion, and 18 is a hinge shaft , 23 is a fitting groove, and 28 is an insertion hole.

Claims (1)

[Scope of utility model registration request] A hinge body with a substantially short cylindrical support hole attached to the opening of the casing, a door with an insertion hole formed in the pivot base end, and a pivot base end of the door. The hinge shaft is attached to the hinge body and has a support protrusion inserted into the insertion hole of the door on one side, and a hinge shaft inserted into the support hole of the hinge body on the other side, and a protruding base on the hinge shaft. A door device comprising: an auxiliary hinge body formed with a fitting groove that surrounds and is fitted and supported on the outer periphery of the support hole.