JP2000257327A - Hinged door supporting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fitting part of a heady door swingably and openably or closably fitted around a vertical axis by a hinge structure from generating a strain owing to the weight and increasing the strain with time elapsed to bring an opening/closing trouble. SOLUTION: A support plate 51 made of an L-shaped sectional metallic plate is fixed so as to protrude one side forward to the lower side of the front opening of a refrigerator 1 to which a heavy door 3 is fitted by a hinge structure. A hinge pin having a collar is provided upward at one side of the upper face of one side of the support plate 51, and a support face 55 is provided at the opposite side. The tip is folded to slant downward and form a guide slope face. Meanwhile, in an appropriate position of one side of the lower edge of a heat insulation door 3. a bearing hole in which the hinge is fitted is provided. At the opposite side, a roller 60 serving as a support structure is attached to the opposite side so that the lower end is positioned in the middle between the surface of the support face 55 and the lower edge of the heat insulation door 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door support structure mounted on a hinge mechanism so as to swing open and close about a vertical axis.

[0002]

2. Description of the Related Art Conventionally, when a door is swingably mounted,
Bearing holes are provided at the top and bottom of one of the right and left side ends of the door, and the corresponding hinge pins are mounted on the main body side by projecting or the like.

As a heavy door attached by a hinge mechanism, for example, a hard type ice cream dispenser shown in FIG. 9 is known. This is because a pouring cylinder 112 in which a piston 113 is slidably fitted is provided vertically on the back side of the heat insulating door 3 attached to the freezer 101,
A discharge pipe 122 provided with a vertical discharge passage in which a valve body is fitted so as to be able to move up and down is attached, and a connecting pipe 121 communicating with the discharge passage and projecting inward is formed by a discharge cylinder. 112
Is connected to the outlet of the ice cream pack B stored on the upper surface side of the piston 113 in FIG. Then, the communication port between the connecting pipe 121 and the discharge passage is opened by raising the valve body, and the pump 127 is driven to supply the working fluid to the lower surface side of the piston 113. Compressed and connected pipe 1
21. Ice cream is poured out through a pouring passage.

[0004]

In such an ice cream dispenser, the pouring cylinder 112 is attached to the back surface of the door 3 in consideration of the convenience of replacing the ice cream pack B. However, this pouring cylinder 1
12 is made of stainless steel or the like in consideration of pressure resistance and the like because a relatively hard ice cream maintained at a low temperature is applied by applying high pressure to the ice cream. 3 has to be very heavy.

However, when a heavy door or a large door is attached by the conventional hinge mechanism, the door is supported only on one of the left and right sides. Opening and closing might be hindered. In a conventional structure in which a door is supported only by a hinge mechanism, downward stress caused by the weight of the door or the like concentrates on the hinge mechanism. Further, since the stress acting on the fulcrum is directly proportional to the distance from the force point, the stress generated by the door weight increases as the distance from the hinge mechanism supporting the door increases. Therefore, in order to prevent the occurrence and progress of distortion, it was necessary to make the mounting portion very strong.

[0006] In particular, in the case where the door is unavoidably heavy even though the mounting portion is not so designed as in the above-described ice cream dispenser,
The above problems were serious.

In view of the above situation, according to the present invention, in a case where a heavy door is mounted so as to be swingable about a vertical axis by a hinge mechanism, a door mounting portion is distorted due to the weight of the door. An object of the present invention is to provide a simple support structure in order to prevent a situation in which distortion increases with time and hinders opening and closing of a door.

[0008]

In order to solve the above-mentioned problems, the present invention has the following arrangement. That is, in the invention according to claim 1, a door supporting portion is provided on the main body to which the door is attached so as to be located below the door when the door is closed, and the door or the door supporting portion is provided. A support mechanism is provided on the opposite side of at least one of the hinge mechanisms so as to be located between a lower end of the door and the door support portion when the door is closed.

Further, in the invention according to claim 2,
2. The door support structure according to claim 1, wherein the support mechanism is provided on one of the door and the door support, and a guide slope is formed on the other to guide the support mechanism to guide the opening and closing of the door. It is characterized by.

Further, in the invention according to claim 3, in the door support structure according to claim 1 or 2, the door support portion is configured such that one side of the metal plate bent into an L shape is forwardly disposed from the front surface of the main body. The support mechanism is located between one side of the door and the door, and a portion of the one side from the hinge mechanism is provided at a front edge of the main body. A guide groove is formed along the guide groove, and a tip of a swing arm rotatably provided at a position eccentric to a hinge axis on a lower edge of the door is slidably fitted in the guide groove. It is characterized by the following.

[0011]

According to the door support structure of the present invention, the lower end of the door is supported by the hinge mechanism on one side and supported by the support mechanism on the opposite side.
Therefore, even if the door is tilted due to the weight of the door and the other side of the hinge mechanism is lowered, the lower end of the door is supported by contacting the support mechanism, so that the progress of distortion is prevented, and the opening and closing of the door is hindered. A catastrophic situation can be avoided.
That is, it is possible to extend the useful life of the heavy door mounted with the hinge mechanism without requiring a large-scale reinforcement of the mounting portion and the like.

According to the second aspect of the present invention, even if the lower end of the door is distorted to a position below the door support when the door is released, the support mechanism of the door or the door support is provided. The door is smoothly guided to the closed position without requiring a large force due to the guide slope formed without the door.

According to the third aspect of the present invention, the pivot arm slidably fitted in the guide groove abuts one end of the guide groove formed along the front edge of the main body. The opening angle of the door can be regulated.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an ice cream dispenser will be described below with reference to the drawings.

First, the overall structure of the ice cream dispenser will be described with reference to FIG. The interior of the freezer 1 formed of an insulated box is a freezer 2, which is provided with an openable / closable insulated door 3 on the front surface thereof.
The machine room 5 is provided on the bottom side of the
Supported by. The machine room 5
Is provided with a cooler 8 connected to a refrigerator 7 provided in the refrigerator, and a fan 9 in the refrigerator, and the air in the refrigerator sucked through a duct 10 provided in the inner surface of the freezing compartment 2 is Cooler 8
The heat is exchanged during the passage of the cooling air to generate cool air, and the cool air is circulated and supplied into the freezing room 2 by the in-compartment fan 9. Thus, the inside of the freezing compartment 2 is maintained at a cooling temperature at which the ice cream A is cooled and stored while maintaining a state in which the ice cream A can be poured.

A brine X is provided on the inner bottom surface in the freezer compartment 2.
A tank 25 for storing the oil is stored, and a connection between the tank 25 and the bottom surface of the pressure chamber 17 of the pouring cylinder 12 is made through a brine flow passage 26, and a reversible pump 27 is interposed in the middle thereof. It is housed in the machine room 5. Therefore, when the pump 27 is driven in the forward direction, the brine X in the tank 25 is supplied into the pressure chamber 17 as shown by the solid arrow in FIG. 1, and when the pump 27 is driven in the reverse direction. As shown by a dashed arrow in the drawing, the brine X in the pressure chamber 17 is sucked and returned to the tank 25 side.

A pouring cylinder 12 is attached to the back side of the heat insulating door 3 by a fixture 11 so as to be vertically and tiltable. A piston 13 is tightly and slidably fitted in the dispensing cylinder 12.
The pack storage chamber 16
Are formed. Also, on the lower surface side of the piston 13,
A pressure chamber 17 for supplying and discharging the brine X is formed.
A vertical U-shaped groove 18 is cut from the upper edge of the wall surface of the dispensing cylinder 12 corresponding to the heat insulating door 3. Therefore, the pack B having the elasticity in which the ice cream A is sealed is placed in the pack accommodating chamber 16 through the outlet C thereof.
It can be stored while being fitted in the groove 18. A lid 19 is detachably attached to the top opening of the pack storage chamber 16.

On the outer surface on the upper side of the heat insulating door 3, a pouring section 22 is provided.
A connecting pipe 21 projecting horizontally from the back side of the pouring portion penetrates the heat-insulating door 3 and protrudes to the inner surface side thereof. It is connected. When the cock 23 is operated up and down, the spout 20 is opened and closed via the valve element 24. At a position below the pouring section 22 on the front surface of the heat insulating door 3, the pouring section 2 is provided.
A receiving tray 29 for receiving the ice cream A dripping from 2 is provided. An operation panel 30 is provided at the upper end of the front surface of the heat insulating door 3, and the operation panel 30 is equipped with an ejection switch, a piston down switch, and the like.

In the above-described ice cream dispenser, the heat insulating door 3 is attached to the opening 39 of the freezer 1 formed of a heat insulating box so as to be pivotable about the right side edge in FIG.

Above the mounting portion of the heat insulating door 3, a downward hinge pin 42 is provided on a hinge plate 41 projecting from a right corner of the freezer 1 on the door side, and a right corner of the upper edge of the heat insulating door 6 is provided. A bearing hole 43 into which the hinge pin 42 fits is opened.

On the other hand, below the opening 39 in the freezer 1, a support plate 51 formed by bending a metal plate so as to have an L-shaped cross section is formed such that one side thereof projects forward from the opening 39. It is fixed to the front surface of the freezer 1 by screws 52 penetrating the other side. As shown in FIG.
A hinge pin 4 having a collar 50 is provided at the upper right corner of one side of the support plate 51 projecting forward from the opening 39.
5 is provided upward, and at a position on the left side from the projecting position, a part of the support plate 51 extends forward along the long side edge to form an extension 53. A guide groove 54 extending left and right is open in 53. An opposite end of the support plate 51 to which the hinge pin 45 is attached;
That is, on the left side in the mounted state, a support surface 55 that is partially extended along the long side edge is provided.
5 is bent so as to incline downward to form a guide slope 56. On the right side of the lower edge of the heat-insulating door 3, a bearing hole 46 into which the hinge pin 45 fits is provided, and one end of a turning arm 57 is fixed at a position eccentric to the bearing hole. The other end of the swing arm 57 is slidably fitted in the guide groove 54 of the extension portion 53 via a pin.

As shown in FIGS. 4 to 6, a roller 60 corresponding to a support mechanism is attached to the heat insulating door 3 on the side opposite to the hinge mechanism, that is, on the lower left edge in the drawing. More specifically, as shown in FIG. 6, the screw hole 61 is located above the support surface 55 on the left side of the lower edge of the heat insulating door 3.
A mounting plate 64 to which rollers 60 are mounted on the left and right sides via nuts 63 is screwed by mounting screws 65 in the concave portion 62. The roller 60 is attached such that the lower end of the roller 60 is located between the surface of the support surface 55 and the lower edge of the heat insulating door 3, as shown in FIG. At this time, it is preferable to attach the roller 60 so that a very small clearance is formed between the lower end of the roller 60 and the surface of the support surface 55.

Next, the operation of the ice cream dispenser as described above will be described. To pour out ice cream A, hold a container (not shown)
When the cock 23 is opened and the cock 23 is opened, the communication hole is opened, and the discharge switch is turned on to turn the pump 27 on.
Is driven in the forward direction, and the brine X in the tank 25 is supplied into the pressure chamber 17 of the injection cylinder 12 and pressurized.
As a result, the piston 13 rises, the pack B is compressed, and the ice cream A flows out of the outlet C of the pack B, passes through the connecting pipe, the communication hole, and the lower end of the spout passage, and from the spout 20 into the container. Is poured out. Once the proper amount is dispensed,
When the cock 23 is closed, the pouring switch 31 is turned off, the pump 27 is stopped, and the pouring port 20 is closed to stop pouring. By repeating the above, ice cream A is sequentially poured out.

When the ice cream A in the pack B is used up as the pouring progresses, the pack B is replaced with a new one.
In this case, the heat insulating door 3 is opened, and the pouring cylinder 12 is taken out of the refrigerator. The heat insulating door 3 includes a support plate 51.
One end of the revolving arm 57 slidably fitted in the guide groove 54 provided in the guide groove 5 is provided via a pin.
By contacting the right end of No. 4, the open attitude at a certain angle is maintained. Subsequently, when the piston down switch provided on the operation panel 30 is turned on, the pump 27 is driven to rotate in the reverse direction, the brine X in the pressure chamber 17 of the discharging cylinder 12 is sucked and returned to the tank 25 side, and the pressure chamber is returned. The piston 13 is worked by tilting the inside of the chamber 17 to a negative pressure, and the pack storage chamber 16 is gradually expanded. When the piston 13 reaches the lower end position, the reverse rotation of the pump 27 is stopped. After that, the used pack B is taken out by removing the lid 19 and replaced with a new pack B.

In the above-described ice cream dispenser, by providing the hinge door support mechanism of the present invention, the following advantages can be obtained.

First, at the time of assembling the apparatus, as shown in FIG. 4, one end of the lower part of the door 3 is placed on the collar 50 of the hinge, and the other end is placed on the support surface 55 via a support mechanism such as a roller 60.
Since it can be held substantially horizontally on the top, it is not necessary to support the door 3 until the hinge is attached, and the workability is good. Further, for the same reason, the inclination of the door can be easily adjusted.

If the roller 60 is attached to the lower edge of the door 3 so as to float slightly from the support surface 55, the resistance during operation is reduced by the presence of the support mechanism when no distortion occurs. There is no increase. When the hinge is distorted and the door is tilted, the roller 60 below the heat-insulating door 3 abuts against the support plate 55 and the door 3 is supported at two points from below, so that the distortion is prevented from increasing. , Door 3
Can be avoided. Even when the distortion occurs as described above and the swinging lower portion of the door 3 is supported on the support surface 55, the resistance at the time of opening and closing the door can be reduced by using a rolling mechanism such as the roller 60 as the support mechanism. The increase can be minimized.

Even if the lower end of the door 3 is located below the support surface 55 when the door 3 is opened due to a load or the like at the time of replacement of the ice cream pack B, the roller 60 is placed on the guide slope 56. By rolling over it, the door 3 can be closed in the proper position without requiring a large force.

<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, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, the case where the present invention is applied to a hinge door attached to an ice cream dispenser is illustrated, but the present invention can be applied to all heavy doors supported by a hinge mechanism. (2) In the above embodiment, a roller is used as the support mechanism. However, the present invention is not limited to this. For example, a similar effect can be obtained by screwing the ball bear 67 as shown in FIG. Further, the support mechanism is not limited to a rolling mechanism such as a roller or a ball bear, and a support mechanism using, for example, an appropriate projection may be provided. In this case, both or one of the contact surfaces of the projection and the door support portion is formed of a slippery resin, or both or one of the contact surfaces is coated with a slippery resin, and the door is opened and closed. It is desirable to keep the frictional resistance at the time small. (3) In the above embodiment, the support mechanism is provided on the lower edge of the door. However, as shown in FIG. 8, a support mechanism, that is, a rolling mechanism such as a roller or a ball bearing 67, It may be configured to have a support mechanism with an appropriate projection or the like. As described above, when the support mechanism is provided in the door support portion, a guide plate 69 provided with a guide slope 68 whose end in the door closing direction is inclined upward at the lower edge of the door may be provided. (4) In the above embodiment, a plate-shaped member is provided as the door support. However, the present invention is not limited to this. For example, a structure in which the lower part of the main body to which the door is attached extends in the door opening direction may be used. It is.

[Brief description of the drawings]

FIG. 1 is a side longitudinal sectional view of an ice cream dispenser to which the present invention is applied.

FIG. 2 is an exploded perspective view showing a mounting structure of the heat insulating door.

FIG. 3 is a perspective view showing a structure of a support plate.

FIG. 4 is a front view showing a lower part of a heat insulating door and a door support structure.

FIG. 5 is a side longitudinal sectional view showing a heat insulating door lower part and a door supporting structure.

FIG. 6 is an exploded perspective view showing a structure for attaching a roller to a lower edge portion of a heat insulating door.

FIG. 7 is a side sectional view showing one application example of the present invention.

FIG. 8 is a side sectional view showing another application example of the present invention.

FIG. 9 is a perspective view showing the structure of a conventional ice cream dispenser.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Freezer (main body) 3 ... Insulated door 42 ... Upper hinge pin 43 ... Upper hinge bearing hole 45 ... Lower hinge pin 46 ... Lower hinge bearing hole 51 ... Support plate (door support part) 56 ... Guide slope 54 ... Guide groove 5
7: Revolving arm 60: Roller (support mechanism)

Claims (3)

[Claims] 1. A hinge mechanism for supporting a door which is swingably openable and closable about a longitudinal axis with respect to a main body, wherein the main body is positioned below the door when the door is closed. A door support portion is provided, and at least one of the door and the door support portion on the opposite side of the hinge mechanism is provided with a lower end of the door and the door support portion in a state where the door is closed. To be located between
A hinge door support structure, further comprising a support mechanism. 2. The method according to claim 1, wherein the support mechanism is provided on one of the door and the door support, and a guide slope for guiding the support mechanism to guide the opening and closing of the door is formed on the other. The hinge door support structure according to claim 1, wherein: 3. The door support portion is formed by fixing one side of a metal plate bent into an L shape to the main body so as to protrude forward from the front surface of the main body. Between the hinge mechanism and a guide groove formed along the front edge of the main body, and the guide groove includes a lower edge of the door in the guide groove. 3. The hinge door support mechanism according to claim 1, wherein a tip of a swing arm rotatably provided at a position eccentric with respect to the hinge axis is slidably fitted.