KR100288256B1 - Easy opening of the refrigerator door - Google Patents

Abstract

The present invention relates to a device for easily opening a refrigerator door, and in the related art, a negative pressure is generated in a refrigerator by rapid contraction of external air introduced into the refrigerator after opening and closing the refrigerator door, which causes a lot of force to open the door and opens the door by force. There have been problems such as collapsed objects stored in the interior of the room.

According to the present invention, a large diameter opening is formed at the front end of the refrigerator, and an inclined portion narrowing toward the rear side is formed at the rear end of the refrigerator. In addition, the stepped portion through which the air passage is formed through the outer side of the hollow portion extends to the rear end portion, and the rear end portion is interviewed or spaced from the inclined portion due to the pressure difference between the inside and outside of the refrigerator. It is composed of a sealing member formed with an air cutout of a shape corresponding to the inclined portion to seal or open the air passage to quickly maintain the pressure balance inside and outside the refrigerator to facilitate the opening of the door as well as the size of the pressure balancing device Miniaturized and simplified the structure to improve the assembly and productivity.

Description

Easy opening of the refrigerator door

The present invention relates to an easy opening device of the refrigerator door, and more particularly, to maintain the equilibrium of the pressure of the inside and outside air of the refrigerator so that the door of the refrigerator can be pulled by a general force pulled by a person when opening the door of the refrigerator. The present invention relates to an easy opening device of a refrigerator door that can be easily opened.

In general, a refrigerator fills an insulating material such as urethane to form a storage space between a metal cabinet forming an outer mold and an inner box made of a plastic injection molding.

The storage space serves as a freezer compartment or a refrigerating compartment, for example, and maintains a low temperature by a compressor or a refrigerant cycle in the machine room.

In general, a refrigerator has a door that can be rotated and opened by a hinge or the like to open and close a storage space, and a part such as a gasket, which is a means for sealing to prevent the outflow of cold air such as a freezer or a refrigerating chamber, to a part where the door and the cabinet contact each other The member is attached.

However, according to the conventional door structure of the refrigerator, when the difference between the internal temperature and the external temperature of the storage space is about 40 ℃, the normal adult pull force, for example, the door does not open even by the force of about 20kg There was this.

When the refrigerator door or the freezer door is opened, cold air in the storage space and hot air from the outside cause natural convection. When the door is closed in this state, the volume of the hot air mixed in the storage space is cooled and the volume is reduced. This is because the internal air pressure becomes lower than the external air pressure so that negative pressure is generated, and the door is subjected to such negative pressure to make the closed state more firm.

Looking at the domestic utility model registration No. 109835, "pressure equalizer of the refrigerator," which has been previously filed and disclosed as a way to reduce the door opening force of the refrigerator, the cabinet 10 and the refrigerator door forming the main body of the refrigerator. (20), a pressure control door installed to be rotatable about one side by an operating rod (42) in the gasket (30) installed between the cabinet and the refrigerator door and the cabinet in contact with the gasket (30) 40) and a pressing piece protruding toward the inside of the refrigerator in the refrigerator door to rotate the pressure control door 40 into the cabinet when the refrigerator door is closed to form a gap between the pressure control door and the gasket. 50 and an elastic restoring means for elastically restoring the rotation of the pressure control door.

Thus, the pressing piece 50 rotates and opens the pressure control door 40 to the inside of the cabinet when the refrigerator door is closed, and is gradually restored by the elastic restoring means, so that the pressure control door 40 is closed in the refrigerator door. The outside air flows through the gap formed between the gasket and the gasket to achieve pressure balance inside and outside the refrigerator.

However, the above-mentioned refrigerator pressure equalizer has to install a pressure control door 40 inside the cabinet of the refrigerator, and also increase the number of working labor due to separately fixing the pressing piece 50 inside the refrigerator door. In order for the pressure control door 40 to be rotated by the 50, the operation rod 42 has to be protruded by a predetermined length to the inside of the refrigerator, thereby degrading the aesthetics.

As another example for reducing the door opening force of the refrigerator, Korean Patent Application No. 96-55676 "Fridge having a rapid freezing device", which has been filed and disclosed, will be described with reference to FIG. A pressurizing rod 24 connected to the rear of the exposed button 21, a spool 27 mounted through a spring 28 in the freezer door 11, and a front portion of the spool 27; In order to open the door, it is composed of a packing 26 for contact and maintaining airtightness, and a connecting link 25 for supporting one end of each of the pressure rods 24 and the spool 27 to move in opposite directions. Pressing the button 21 and at the same time as the outside air flows into the inside of the negative pressure is released to facilitate the opening of the door.

However, such a refrigerator pressure balancer requires a lot of space for installing the pressure balancer inside the door, and also requires a large number of components, which complicates the assembly process, and must press the button 21 when opening the door of the refrigerator. There is a troublesome problem that the negative pressure in the bay can be released to facilitate the opening of the door.

The present invention has been made in order to solve the above problems of the prior art, it is possible to quickly maintain the pressure balance inside and outside the refrigerator to facilitate the opening of the door as well as to reduce the size of the pressure balancer to solve the negative pressure of the refrigerator. It is an object of the present invention to provide an easy opening device for a refrigerator door that can be miniaturized to be easily installed inside the door handle of the refrigerator or to one side of the main body of the refrigerator, and to simplify its structure to improve assembly and productivity.

1 is a cross-sectional view of a refrigerator cabinet and a door showing a state where a pressure equalizer of a conventional refrigerator is installed;

2 is a cross-sectional view showing a state where another example of the pressure balancer of the conventional refrigerator is installed;

Figure 3 is an exploded perspective view showing a capsule and the sealing member according to the present invention,

Figure 4 is a cross-sectional view showing the operating state of the present invention when the negative pressure in the refrigerator refrigerator is released,

5 is a cross-sectional view showing an operating state of the present invention when a negative pressure occurs in a refrigerator refrigerator.

Explanation of symbols on the main parts of the drawings

100: capsule, 101: opening,

104: fixing groove, 105: fixing protrusion,

110: sealing member, 112: air blocking,

115: connecting portion, 118: locking portion,

120: hollow portion, 121: inclined portion,

122: air passage, 130: stepped portion.

In the present invention, a large diameter opening is formed at a leading end of the refrigerator, and an inclined portion narrowing toward the rear side is formed at the rear end of the opening. In addition to forming a hollow portion, the stepped portion through which the air passage is formed through the outside of the hollow portion extends to the rear end portion, and the rear end portion is installed on the inclined portion by the pressure difference between the inside and outside of the refrigerator. The outer circumferential surface is characterized in that consisting of a sealing member formed with an air blocking portion corresponding to the inclined portion so as to seal or open the air passage while being interviewed or spaced apart.

In addition, the rear inner circumferential surface of the hollow portion has a locking projection protruding inward, and the rear end of the sealing member is characterized in that the spherical locking portion having a larger diameter than the locking projection is formed.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described in more detail.

Figure 3 is an exploded perspective view and enlarged view showing the capsule and the sealing member according to the present invention, as shown in Figure 3, the capsule 100 formed in a rectangular cylindrical shape and to be able to flow in the front and rear direction therein It shows a sealing member 110 is installed.

The capsule 100 has a fixing protrusion 105 and a fixing groove 104 formed on the upper and lower half of the inner side of the semi-cylindrical cut along the longitudinal direction, respectively, and the upper side and the upper side of the semi-cylindrical inside of the position corresponding thereto. Fixing grooves 104 and fixing protrusions 105 are formed in the lower portion is detachably sealed.

A protrusion 106 is formed at the end of the fixing protrusion 105 so that the coupling force between the fixing groove 104 and the fixing protrusion 105 is increased.

The capsule 100 is an injection molding material of synthetic resin and does not have to include a separate sealing member on the inner coupling surface which is connected by the fixing groove 104 and the fixing protrusion 105 to the refrigerator, in which a negative pressure is generated very largely. In the case of installation, the sealing force may be further improved through a separate sealing member.

A large diameter opening 101 is formed at the front end of the capsule 100 so as to communicate with the outside of the refrigerator, and the rear end of the opening 101 is inclined at a predetermined angle so that the diameter thereof becomes narrower toward the rear side. A portion 121 is formed and a stepped portion 130 through which the hollow portion 120 of the small diameter penetrates to the rear side of the inclined portion 121 is extended to the rear end portion of the capsule 100.

That is, the stepped portion 130 is formed from the inclined portion 121 to the rear end portion in the longitudinal direction inside the capsule 100, and the hollow portion 120 having the small diameter inside the center of the stepped portion 130. Is formed.

A locking jaw 129 having a predetermined thickness protrudes from the rear inner circumferential surface of the hollow part 120 formed through the center of the stepped part 130 to form a smaller diameter than the hollow part 120.

The inner hollow portion 120 of the capsule 100 is provided with a rubber or silicone sealing member 110 having excellent elasticity to be able to flow in the front and rear direction, the end portion of the sealing member 110 toward the rear A funnel-shaped air cutout 112 having a smaller diameter is formed, and a cylindrical flange portion 113 is formed at the rear end of the air cutout 112.

At the rear side of the flange portion 113, the connection portion 115 having a smaller diameter than the flange portion 113 is formed to extend, and a spherical locking portion 118 is formed at the end of the sealing member 110.

At this time, "L" (the length from the tip of the inclined portion 121 of the capsule 100 to the rear end of the locking jaw 129) shown in Figure 3 and "L '" (air blocking portion of the sealing member 110) (112) the length from the leading end to the rear end of the connecting portion 115) is formed to be the same.

As such, the capsule 100 having the sealing member 110 installed therein may be installed to communicate with the outside of the refrigerator and the inside of the refrigerator at a location such as a door of the refrigerator or a main body side of the refrigerator, and the opening 101 of the capsule 100. ) Is exposed to the outside of the refrigerator and the rear end of the capsule 100 is installed to communicate with the inside of the refrigerator.

In addition, the inclination angle of the air blocking unit 112 and the inclination angle of the inclined portion 121 formed on the stepped portion 130 inside the capsule 100 are formed at the same angle to each other due to the pressure difference caused by the negative pressure in the refrigerator compartment. As the blocking part 112 is intimately interviewed or spaced apart from the inclined part 121 inside the capsule 100, the air passage 122 on the inclined part 121 is sealed or opened.

The diameter of the cutout 118 is larger than the diameter of the locking step 129 formed on the inner circumferential surface of the hollow part 120 so that the sealing member 110 is separated from the capsule 100 to the outside. To prevent them.

In addition, the diameter of the flange portion 113 is also formed to be larger than the diameter of the locking step 129 to prevent the sealing member 110 is completely inserted into the interior of the capsule 100.

An easy opening device of the present invention refrigerator door having such a configuration will be described in more detail with reference to the drawings.

4 is a cross-sectional view showing an operating state of the present invention when the negative pressure in the refrigerator refrigerator is eliminated, and FIG. 5 is a cross-sectional view showing an operating state of the present invention when negative pressure is generated in the refrigerator refrigerator.

If you open the refrigerator door or freezer door first, the cold air and the outside hot air inside the storage space will mix with natural convection. If you close the door in this state, the hot air mixed in the storage space will be cooled and the volume will decrease. The air pressure becomes lower than the external air pressure, so that negative pressure is generated, and the door is subjected to this negative pressure to make the closed state more firm.

At this time, as shown in Figure 5, at the same time the pressure in the refrigerator refrigerator is lowered and the sealing member 110 is sucked by a predetermined length to the inner side is moved and at the same time the air blocking portion 112 of the sealing member 110 is also high The air passage 122 of the inclined portion 121, which was pushed inward and the air cutout 112 closed, was opened, and at the same time, the outside air was rapidly introduced through the gap and the outside air flowed into the refrigerator. Will be.

Thus, the internal pressure and the external pressure of the refrigerator are equally maintained, and the opening of the refrigerator door is easy.

As shown in FIG. 4, in the state where the high internal pressure and the external pressure are in equilibrium, the pressure applied to the sealing member to be pushed toward the high inner side is released and at the same time sucked into the high inner side together with the sealing member 110. As the air blocking part 112 is restored to its original shape by the elasticity of the air blocking part 112, the sealing member 110 is moved to the original position by a predetermined distance, and the air blocking part of the sealing member 110 is carried out. As the 11 is restored to its original state, the air passage 122 on the inclined portion 121 is blocked to maintain the airtight so that external air no longer enters the inside of the refrigerator.

Such a door easy opening device of the present invention is applicable to both the refrigerating chamber door and the freezing chamber door to form a plurality of places in the refrigerator to enable rapid pressure-type operation.

And in the installation of such a door easy opening device in the refrigerator, conventionally, one side of the capsule 100 is to be communicated to the inside of the refrigerator and the other side to be exposed to the outside of the main body of the refrigerator to be installed so as to communicate with the outside of the refrigerator of the refrigerator Hurt the appearance,

However, since the size of the capsule 100 is small, the present invention is hardly restricted by the installation position such as the door or the main body of the refrigerator.

In particular, it is preferable not to damage the appearance of the refrigerator, and to install it in a location that is not easily seen by the user, that is, inside the finger insertion portion of the door handle installed in the refrigerator door.

Although not shown in the drawings, the capsule 100 may be integrally injected and the sealing member 110 installed therein may be forcibly fitted to make the sealing force stronger, thereby making it more sensitive to pressure in the refrigerator.

The shape of the inclination portion 121 of the capsule 100 and the shape of the air blocking portion 112 of the sealing member 110 is only one embodiment according to the present invention, and is not limited to the circular shape, but also changed to other shapes. It is possible.

As described above in detail, the present invention facilitates the opening of the door by quickly maintaining the pressure balance inside and outside the refrigerator by a capsule installed to communicate with the outside and inside of the refrigerator and a sealed cap flowing in the front and rear direction in the capsule. In addition, the size of the pressure balancer that reduces the negative pressure of the refrigerator can be easily installed on the inside of the door handle of the refrigerator or on one side of the main body of the refrigerator, and the structure thereof can be simplified to improve assembly and productivity. There is one effect.

Claims (4)

In the easy opening device of the refrigerator door to open the door of the refrigerator by relieving the negative pressure in the refrigerator by opening the outside air to the inside of the refrigerator to maintain the internal and external pressure in the equilibrium state, An opening 101 having a large diameter is formed at the front end of the refrigerator, and an inclined portion 121 is formed at the rear end of the opening 101 to narrow toward the rear side, and to the rear side of the inclined portion 121. Is formed in the center along the longitudinal direction of the hollow portion 120 of the small diameter as well as the stepped portion 130 is formed through the air passage 122 through the outer side of the hollow portion 120 is extended to the rear end is formed A capsule 100 whose rear end is installed at the inner side of the refrigerator, An air blocking part having a shape corresponding to the inclined portion 121 to seal or open the air passage 122 while the outer circumferential surface is interviewed or spaced apart from the inclined portion 121 by a high and low pressure difference of the refrigerator ( Easy opening device of the refrigerator door, characterized in that consisting of a sealing member (110) formed 112. The spherical locking portion of claim 1, wherein a locking jaw 129 protrudes inward from the rear inner circumferential surface of the hollow part 120, and a diameter larger than that of the locking jaw 129 is formed at the rear end of the sealing member 110. Easy opening of the refrigerator door, characterized in that the 118 is formed. The method according to claim 1, wherein the capsule 100 is bisected in the longitudinal direction to form the fixing projections 105 and the fixing grooves 104 to the upper and lower portions of the inner surface of the opposite coupling, respectively, the fixing projections 105 Easy opening of the refrigerator door, characterized in that the protrusion 106 is formed. The method of claim 1, wherein the capsule 100 is easy opening device of the refrigerator door, characterized in that installed inside the finger insertion portion of the door handle is installed in the refrigerator door so as not to harm the appearance.