Door structure of a double-door refrigerator

Abstract

This utility model discloses a door structure for a double-door refrigerator, including a door body, a sealing strip, and an air-leakage linkage assembly. The door body is symmetrically installed on the refrigerator as a sealed door. A sealing strip is provided on the side of the door body facing the refrigerator body. A recessed cavity leading to the outside is provided on the front surface of the door body. A cover plate and a connecting spring are provided in the recessed cavity. An inner probe rod is installed on the side of the cover plate facing the recessed cavity. The inner probe rod passes through the side wall of the recessed cavity and can move into a set cavity inside the door body. The interior of the door body is hollow and has a set cavity for the air-leakage linkage assembly. Multiple limiting grooves are arranged in the inner cavity of the sealing strip facing the inner side wall of the refrigerator body. The air-leakage linkage assembly cooperates with the limiting grooves. When the user pushes the cover plate with their finger when opening the door, the sealing strip will partially indent and create a gap with the refrigerator door frame. This allows the door body, which was originally pressed tightly against the door frame by external air pressure due to the drop in air pressure inside the refrigerator caused by cooling, to be easily opened.

Description

Technical Field

[0001] This utility model relates to the field of refrigerator door technology, and in particular to a door structure for a double-door refrigerator. Background Technology

[0002] Large-capacity refrigerators, whether for commercial or residential use, have a large open area at the front. If a single-side door design is used, the door area would be too large and inconvenient to open and close. Therefore, a double-door design is adopted. In order to ensure the airtightness of the refrigerator's interior and to keep the refrigerator warm after the door is closed, existing double-door refrigerators have a sealing strip on the side of the door facing the refrigerator compartment. After the door is closed, the sealing strip will be tightly attached to the door frame, thereby effectively preventing the exchange of gases between the inside and outside of the refrigerator and ensuring the airtightness of the interior.

[0003] However, when a user leaves the refrigerator open for a long time, causing the internal temperature to rise significantly, and then closes the door, the refrigerator's cooling process lowers the temperature of the gas inside, resulting in a significant decrease in internal air pressure. At this point, the external air pressure will press the door tightly against the door frame, making it difficult for the user to open the door. This phenomenon is very likely to occur in the hot summer months and in large-capacity double-door refrigerators. Utility Model Content

[0004] In order to solve the problems mentioned in the background art, the present invention provides a door structure for a double-door refrigerator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A double-door refrigerator door structure includes a door body, a sealing strip, and an air leakage linkage assembly. The door body is symmetrically installed on the refrigerator to serve as a sealed door. A sealing strip is provided on the side of the door body facing the refrigerator body. A recessed cavity leading to the outside is provided on the front surface of the door body. A cover plate and a connecting spring are provided in the recessed cavity. An inner probe rod is installed on the side of the cover plate facing the recessed cavity. The inner probe rod penetrates the side wall of the recessed cavity and can move into a cavity inside the door body.

[0007] The door is hollow inside and has a cavity with a gas leak linkage component. Multiple limit plug grooves are arranged in the inner cavity of the sealing strip facing the inner wall of the refrigerator body. The gas leak linkage component cooperates with the limit plug grooves.

[0008] Preferably, a fixed shaft is installed in the cavity, and the fixed shaft is connected to a rotating lever. The rotating lever can rotate about the connection point with the fixed shaft as the axis of rotation, and the rotating lever extends to the opening where the inner probe passes through the recessed cavity.

[0009] Preferably, each limiting groove is inserted into the end of the pull-out linkage, and the other end of the pull-out linkage passes through the door panel on the side of the door facing the refrigerator body and enters the setting cavity, and is connected to the linkage frame set in the setting cavity.

[0010] Preferably, a linkage block is installed at the center of the linkage frame. The linkage block is connected to the linkage frame through a connecting bracket. A displacement ball is installed on the front side of the linkage block. The displacement ball is installed in conjunction with the universal joint at the end of the rotating shaft lever. The displacement ball is installed in the transverse rail of the linkage block so as to move left and right relative to the linkage block.

[0011] Preferably, the connection between the fixed shaft and the rotating shaft lever is located between the displacement ball and the inner probe rod, and the connection between the fixed shaft and the rotating shaft lever is closer to the universal joint.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When the user opens the door, they push the cover plate with their finger. Through the linkage of various structures in the air leakage linkage component, the various pull-out linkages drive the sealing strip with the installed limit plug groove to be pulled towards the door body. This causes the part of the sealing strip with the limit plug groove to be recessed, creating a gap between it and the refrigerator door frame. External air can enter the refrigerator through this gap, thereby balancing the air pressure inside and outside the refrigerator. This allows the door body, which was originally pressed tightly against the door frame by external air pressure due to the decrease in air pressure inside the refrigerator caused by cooling, to be easily pulled open. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the door structure of a double-door refrigerator according to the present invention;

[0016] Figure 2 This is a top view of the cross section of the door body described in this utility model.

[0017] In the diagram: 1. Door body; 101. Recessed cavity; 102. Setting cavity; 11. Cover plate; 12. Connecting spring; 13. Inner probe rod; 2. Sealing strip; 201. Limiting plug groove; 3. Air leakage linkage assembly; 301. Horizontal sliding rail; 31. Fixed shaft rod; 32. Rotating shaft lever; 33. Pull-out linkage rod; 34. Linkage frame; 35. Linkage block; 36. Connecting frame; 37. Shifting ball; 38. Universal joint. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1 and 2 A door structure for a double-door refrigerator includes a door body 1, a sealing strip 2, and an air leakage linkage component 3. The door body 1 is symmetrically installed on the refrigerator to serve as a sealed door. The interior of the door body 1 is hollow and has a cavity 102 for which the air leakage linkage component 3 is installed. The sealing strip 2 is provided on the side of the door body 1 facing the refrigerator body. After the door body 1 is rotated and closed, the sealing strip 2 can fit tightly against the refrigerator door frame to ensure the airtightness of the refrigerator interior.

[0020] The front surface of the door 1 is provided with a recessed cavity 101 that leads to the outside. The recessed cavity 101 is located near the edge where the two doors 1 close together, so that the user can easily open the two doors 1 by placing both hands in it and pulling the door edge. The cavity 102 is equipped with a fixed shaft 31, which is connected to a rotating lever 32. The rotating lever 32 can rotate about the connection point with the fixed shaft 31 as the rotation axis, thereby allowing the two ends to move closer to or away from the refrigerator body.

[0021] The recessed cavity 101 is provided with a cover plate 11 and a connecting spring 12. The two ends of the connecting spring 12 are respectively connected to the cover plate 11 and the side of the recessed cavity 101 facing the cover plate 11. The user's finger can overcome the elastic force of the connecting spring 12 and push the cover plate 11 into the recessed cavity 101, causing the cover plate 11 to move towards the refrigerator body. After the user's finger pushes the cover plate 11 into the recessed cavity 101, it can pry into the side wall of the recessed cavity 101 and pull open the door 1. An inner probe rod 13 is installed on the side of the cover plate 11 facing the recessed cavity 101. The inner probe rod 13 penetrates the side wall of the recessed cavity 101 and can be moved into the setting cavity 102 inside the door 1. The rotating shaft lever 32 extends to the through-hole of the inner probe rod 13 penetrating the recessed cavity 101, so that the inner probe rod 13 moved into the recessed cavity 101 can push the end of the rotating shaft lever 32 towards the refrigerator body.

[0022] The inner cavity of the sealing strip 2 is provided with multiple limiting grooves 201 arranged on the inner side wall of the refrigerator body. Each limiting groove 201 is inserted into the end of the pull-out connecting rod 33. The other end of the pull-out connecting rod 33 passes through the door panel of the door body 1 facing the refrigerator body and enters the setting cavity 102, and is connected to the linkage frame 34 set in the setting cavity 102. In this way, when the linkage frame 34 is driven to move, it will drive all the connected pull-out connecting rods 33 to move synchronously. Under normal conditions, the sealing strip 2 is flat on the side facing the refrigerator body and can fit well with the refrigerator door frame.

[0023] When the linkage frame 34 moves toward the side away from the refrigerator body, it will drive each pulling linkage 33 to pull the part of the sealing strip 2 with the installed limiting plug groove 201 toward the door body 1, thereby causing the part of the sealing strip 2 with the limiting plug groove 201 to be recessed and create a gap with the refrigerator door frame. External air can enter the refrigerator through this gap, thereby balancing the air pressure inside and outside the refrigerator. As a result, the door body 1, which was originally pressed tightly against the door frame by the external air pressure due to the drop in air pressure inside the refrigerator caused by the cooling, can be easily pulled open.

[0024] A linkage block 35 is installed at the center of the linkage frame 34. The linkage block 35 is connected to the linkage frame 34 through a connecting bracket 36, so that the linkage frame 34 can move synchronously with the linkage block 35. The other end of the rotating shaft lever 32 extends to the front of the linkage block 35. A displacement ball 37 is installed on the front of the linkage block 35. The displacement ball 37 is installed in conjunction with the universal joint 38 at the end of the rotating shaft lever 32. The displacement ball 37 is inseparably installed in the transverse sliding rail 301 of the linkage block 35 so as to move left and right relative to the linkage block 35.

[0025] The connection between the fixed shaft 31 and the rotating lever 32 is located between the displacement ball 37 and the inner probe rod 13. Under normal conditions, the sealing strip 2, made of elastic material, will pull the pull-out connecting rod 33 installed in the limiting plug groove 201 towards the refrigerator body, thereby pulling the universal head 38 connected to the displacement ball 37 towards the refrigerator body. The other end of the corresponding rotating lever 32 will move away from the refrigerator body and close to the opening of the inner probe rod 13 through the recessed cavity 101. When the user needs to open the door, they push the cover plate 11 into the recessed cavity 10 with their fingers. 1. The inner probe rod 13 pushes the end of the rotating shaft lever 32 toward the refrigerator body, and the end with the universal head 38 moves away from the refrigerator body accordingly, thereby pulling the linkage rod 33 to pull out a gap that can balance the air pressure in the limit plug groove 201 installed on the sealing strip 2, so that the door can be opened easily. It can be understood that the universal head 38 cooperates with the ball groove of the displacement ball 37, and the displacement ball 37 cooperates with the slide rail of the linkage block 35, so that when the end of the rotating shaft lever 32 rotates, the linkage rod 33 can move horizontally in a straight direction.

[0026] Preferably, the connection between the fixed shaft 31 and the rotating shaft lever 32 is closer to the universal joint 38, so that the inner probe 13 pushes the section of the rotating shaft lever 32 as a lever-saving arm, thereby making it easier for the user to push the cover plate 11. A coil spring is provided at the connection between the fixed shaft 31 and the rotating shaft lever 32. Under normal conditions, the coil spring drives the rotating shaft lever 32 to rotate to an angle where the universal joint 38 is close to the refrigerator body, so that after the cover plate 11 is returned to its position, the pull-out linkage 33 can also be smoothly returned to its position with the rotation of the rotating shaft lever 32.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A door structure for a double-door refrigerator, comprising a door body (1), a sealing strip (2), and an air leakage linkage assembly (3), wherein the door body (1) is symmetrically installed on the refrigerator to serve as a sealed door, and the sealing strip (2) is provided on the side of the door body (1) facing the refrigerator body, characterized in that: The front surface of the door (1) is provided with a recessed cavity (101) that leads to the outside. A cover plate (11) and a connecting spring (12) are provided in the recessed cavity (101). An inner probe rod (13) is installed on the side of the cover plate (11) facing the recessed cavity (101). The inner probe rod (13) penetrates the side wall of the recessed cavity (101) and can be moved into the setting cavity (102) inside the door (1). The door (1) is hollow inside and has a cavity (102) with a gas leak linkage component (3). The inner cavity of the sealing strip (2) is provided with multiple limiting grooves (201) facing the inner side wall of the refrigerator body. The gas leak linkage component (3) cooperates with the limiting grooves (201).

2. The door structure of the dual-open-door refrigerator according to claim 1, characterized in that: The cavity (102) is equipped with a fixed shaft (31), which is connected to a rotating lever (32). The rotating lever (32) can rotate about the connection point with the fixed shaft (31) as the axis of rotation. The rotating lever (32) extends to the opening where the inner probe (13) passes through the recessed cavity (101).

3. The door structure of a double-door refrigerator according to claim 2, characterized in that: Each of the limiting grooves (201) is inserted into the end of the pull-out linkage (33), the other end of which passes through the door panel of the door body (1) facing the refrigerator body and enters the setting cavity (102), and is connected to the linkage frame (34) set in the setting cavity (102).

4. The door assembly of claim 3, wherein: A linkage block (35) is installed at the center of the linkage frame (34). The linkage block (35) is connected to the linkage frame (34) through a connecting frame (36). A displacement ball (37) is installed on the front side of the linkage block (35). The displacement ball (37) is installed in conjunction with the universal joint (38) at the end of the rotating shaft lever (32). The displacement ball (37) is inseparably installed in the transverse rail (301) of the linkage block (35) so as to move left and right relative to the linkage block (35).

5. The door structure of the dual-door refrigerator according to claim 4, characterized in that: The connection between the fixed shaft rod (31) and the rotating shaft lever (32) is located between the displacement ball (37) and the inner probe rod (13), and the connection between the fixed shaft rod (31) and the rotating shaft lever (32) is closer to the universal joint (38).

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