CN117513903A - Refrigerator with door in door - Google Patents

Abstract

The application relates to the technical field of refrigerators and discloses a door-in-door refrigerator. The door-in-door refrigerator includes: the box body is provided with a box opening and a control part; the main door is arranged on the box body and used for closing or opening the box opening, and is provided with a main door electrical element; the main door hinge is used for enabling the main door to be rotatably connected with the box body; the auxiliary door is arranged on the main door and is provided with an auxiliary door electrical element; the auxiliary door hinge is used for enabling the auxiliary door to be rotatably connected with the main door; the wire harness comprises an auxiliary door wire harness and a main door wire harness, the auxiliary door wire harness is used for connecting the auxiliary door electrical element with the control part, and the main door wire harness is used for connecting the main door electrical element with the control part; the auxiliary door wire harness penetrates through the main door hinge and the auxiliary door hinge, and the main door wire harness penetrates through the main door hinge. The door-in-door refrigerator provides more space for accommodating the wire harness, and avoids the abrasion of the wire harness caused by the fact that part of the wire harness is exposed to the outside.

Description

door-in-door refrigerator

Technical field

The present application relates to the technical field of refrigerators, for example, to a door-in-door refrigerator.

Background technique

A refrigerator is a refrigeration device that can provide a constant low temperature for food or other items inside the refrigerator. The refrigerator usually includes a box body and a door body arranged on the box body through hinges. With the development of the economy, door bodies have more and more functions, which means that there are more and more electrical appliances in the door body. Among them, the electrical appliances in the door need to be connected to the controller located in the box through a wiring harness to achieve communication.

In the related art, a communication cavity is provided inside the hinge, and the wire harness passes through the communication cavity and is connected to the controller located in the box.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in related technologies:

Refrigerator doors are developing towards multi-functionality and thinness, and there are more and more electrical appliances in the door. However, the thinning of the door causes the connecting cavity to become smaller and smaller. When there are many electrical appliances in the door body, the connecting cavity inside the hinge cannot accommodate all the wire harnesses, and some of the wire harnesses are exposed to the outside, which can easily cause wire harness wear.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a simplified summary is provided below. This summary is not intended to be a general review, nor is it intended to identify key/important elements or delineate the scope of the embodiments, but is intended to serve as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a door-in-door refrigerator, which provides more space for accommodating wire harnesses and avoids wire harness wear caused by partial wire harnesses being exposed to the outside. .

In some embodiments, the door-in-door refrigerator includes: a box body provided with a box opening and a control part; a main door provided on the box body for closing or opening the box opening, and the main door is provided with There are main door electrical components; a main door hinge, which is used to rotatably connect the main door and the box; a auxiliary door, which is provided on the main door, and the auxiliary door is provided with auxiliary door electrical components; and auxiliary door hinges , used to rotatably connect the auxiliary door to the main door; the wire harness includes a auxiliary door wire harness and a main door wire harness, and the auxiliary door wire harness is used to connect the auxiliary door electrical components to the control part, so The main door wire harness is used to connect the main door electrical components with the control part; wherein, the auxiliary door wire harness passes through the main door hinge and the auxiliary door hinge, and the main door wire harness passes through the Main door hinges.

Optionally, the auxiliary door harness passes through the auxiliary door hinge from bottom to top, enters the main door from the top of the auxiliary door hinge, and then passes through the main door hinge from bottom to top. , and enters the box from the top of the main door hinge, and is connected to the control part; the main door wiring harness passes through the main door hinge from bottom to top, and enters the box from the top of the main door hinge. Enter the box and connect with the control unit.

Optionally, the main door hinge includes: a hinge plate provided on the box body, the hinge plate is provided with a first wire barrel that can accommodate the wire harness; a wire harness plate is provided with a second wire barrel that can accommodate the wire harness; and , a hinge track plate, provided on the door body, the hinge track plate is provided with a hinge groove and a track groove, the hinge groove is used to accommodate the first wire barrel, and the track groove is used to accommodate the second wire barrel, The second wire barrel can move in the track groove; wherein, the auxiliary door wire harness passes through the first wire barrel and/or the second wire bobbin from bottom to top; and the main door wire harness passes from bottom to top. Pass through the first wire bobbin and/or the second wire bobbin.

Optionally, the track groove is set in a first arc shape, and the second wire barrel takes the first wire barrel as a rotation center and deflects within the range of the first arc shape; the auxiliary door wire harness and the The main door wire harness is provided with a reserved length L, which is used to prevent the main door from rotating and pulling the auxiliary door wire harness and the main door wire harness.

Optionally, the value range of the reserved length L is L≥πR*A/360, where R is the distance between the axis center of the first spool and the axis center of the second spool, and A is the length of the second spool. Maximum deflection angle.

Optionally, the auxiliary door hinge includes: a hinge shaft with one or more first communication connection ports provided on the surface; the first communication connection port is connected to the auxiliary door electrical components; and a hinge base is provided with a groove, so The groove is suitable for accommodating the hinge shaft, and the inner wall of the groove is provided with one or more second communication connection ports; the second communication connection port is electrically connected to a terminal located outside the hinge base, and the third communication connection port is electrically connected to a terminal located outside the hinge base. The two communication connection ports correspond to the first communication connection port one by one; wherein, when the hinge shaft is inserted into the groove, and the hinge shaft and the hinge base are relatively stationary and relatively rotated, each first Each communication connection port is connected to a corresponding second communication connection port to implement communication.

Optionally, the auxiliary door wire harness includes: a first sub-wire harness used to connect the first communication connection port and the auxiliary door electrical component; and a second sub-wire harness used to connect the second communication connection Ports and terminals located on the outside of the hinge base.

Optionally, the door-in-door refrigerator further includes: an auxiliary door hinge box, which is disposed above the main door and is rotatably connected to the auxiliary door. The auxiliary door hinge box covers the auxiliary door hinge. ; The main door hinge box is arranged above the box and is rotatably connected to the box. The main door hinge box covers the main door hinge.

Optionally, the auxiliary door harness enters the auxiliary door hinge box from the upper part of the auxiliary door hinge, enters the main door from the lower part of the auxiliary door hinge box, and then enters the main door from the inside, Pass through the first wire bobbin and/or the second wire bobbin from bottom to top, enter the main door hinge box from the upper part of the main door hinge, and then enter from the lower part of the main door hinge box. The box.

Optionally, the main door wire harness passes through the first wire bobbin and/or the second wire bobbin from the inside of the main door from bottom to top, and enters the main door hinge from the upper part. The main door hinge box is inserted into the box from the lower part of the main door hinge box.

The door-in-door refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

In the door-in-door refrigerator provided by the embodiment of the present disclosure, the main door and the box can be rotatably connected through the main door hinge. The main door hinge is provided with a first wire barrel and a second wire barrel that can accommodate the wire harness, providing more wiring space for the wire harness and avoiding wire harness wear caused by partial wire harness being exposed to the outside. In addition, the second spool is disposed in the track groove and can move in the track groove, and the main door can be opened to a larger angle while the second spool rotates at a smaller angle. Therefore, the opening and closing of the main door exerts less pull on the wire harness passing through the second wire barrel, thereby reducing wear on the wire harness passing through the second wire barrel.

The above general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are illustrated through corresponding drawings. These exemplary descriptions and drawings do not constitute limitations to the embodiments. Connection ports with the same reference numerals in the drawings are shown as similar connections. port, the drawings are not limited to scale and where:

Figure 1 is a schematic structural diagram of a hinge assembly provided by an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of a hinge track plate provided by an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of a hinge plate provided by an embodiment of the present disclosure;

Figure 4 is a schematic structural diagram of a hinge assembly when a door body is in an open state according to an embodiment of the present disclosure;

Figure 5 is a schematic structural diagram of the hinge assembly when another door body is in an open state according to an embodiment of the present disclosure;

Figure 6 is a schematic structural diagram of the hinge assembly when another door body is in an open state according to an embodiment of the present disclosure;

Figure 7 is a schematic structural diagram of another hinge plate provided by an embodiment of the present disclosure;

Figure 8 is a schematic structural diagram of a wiring harness board provided by an embodiment of the present disclosure;

Figure 9 is a schematic structural diagram of the combination of a hinge plate and a wiring harness board provided by an embodiment of the present disclosure;

Figure 10 is a schematic structural diagram of another hinge track plate provided by an embodiment of the present disclosure;

Figure 11 is a schematic structural diagram of another hinge track plate provided by an embodiment of the present disclosure;

Figure 12 is a schematic structural diagram of the combination of a hinge track board and a wiring harness board provided by an embodiment of the present disclosure;

Figure 13 is a schematic structural diagram of a box assembly provided by an embodiment of the present disclosure;

Figure 14 is a schematic diagram of a wiring harness provided by an embodiment of the present disclosure;

Figure 15 is a schematic cross-sectional view of an auxiliary door hinge provided by an embodiment of the present disclosure;

Figure 16 is a schematic structural diagram of a hinge shaft provided by an embodiment of the present disclosure;

Figure 17 is a schematic cross-sectional view of a hinge shaft provided by an embodiment of the present disclosure;

Figure 18 is a schematic structural diagram of a hinge base provided by an embodiment of the present disclosure;

Figure 19 is a schematic cross-sectional view of a hinge base provided by an embodiment of the present disclosure;

Figure 20 is a schematic structural diagram of another door-in-door refrigerator provided by an embodiment of the present disclosure.

Reference signs:

1: hinge assembly; 11: hinge plate; 111: first wire barrel; 1111: first side; 1112: second side; 1113: first opening; 112: first end; 113: second end; 114: third A stop part; 115: second stop part; 116: limiting gap; 12: wire harness plate; 121: second wire barrel; 122: first fixing piece; 123: second opening; 13: hinge track plate; 131 : hinge groove; 132: track groove; 1321: first groove wall; 1322: second groove wall; 133: fixed cylinder; 134: fixed plate;

2: Box; 3: Main door; 4: Main door hinge; 5: Sub door; 6: Sub door hinge; 7: Wiring harness; 71: Sub door wire harness; 72: Main door wire harness; 8: Sub door hinge box; 9: Main door hinge box;

51: hinge shaft; 511: first communication connection port; 512: first accommodation cavity; 52: hinge seat; 521: groove; 5211: first cylindrical inner wall; 5212: second cylindrical inner wall; 5213: first Inner wall of the ladder; 522: second communication connection port; 523: fixed part; 5231: second accommodation cavity; 5232: third accommodation cavity; 524: first connection part; 501: first cylinder; 502: second column surface; 503: first step surface; 504: first end surface; 505: positioning piece.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for convenience of explanation, multiple details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified to simplify the drawings.

The terms "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that data so used are interchangeable under appropriate circumstances for the purposes of the embodiments of the disclosure described herein. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

In the embodiment of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "back", etc. is based on the orientation or position shown in the drawings. Positional relationship. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, connection ports or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, some of the above terms may also be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "upper" may also be used to express a certain dependence relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

In addition, the terms "setting", "connection" and "fixing" should be understood broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be two devices or connection ports. or internal connections between components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

Unless otherwise stated, the term "plurality" means two or more.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an association relationship describing objects, indicating that three relationships can exist. For example, A and/or B means: A or B, or A and B.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

Embodiments of the present disclosure provide a hinge assembly and a door-in-door refrigerator, which provide more space for accommodating wire harnesses and avoid wire harness wear caused by partial wire harness being exposed to the outside.

In a first aspect, an embodiment of the present disclosure provides a hinge assembly 1 .

1 and 2 , the hinge assembly 1 provided by the embodiment of the present disclosure includes a hinge plate 11 , a wiring harness plate 12 and a hinge track plate 13 .

The hinge plate 11 is provided on the box body, and the hinge plate 11 is provided with a first wire barrel 111 that can accommodate the wire harness. The wire harness board 12 is provided with a second wire barrel 121 that can accommodate the wire harness. The hinge track plate 13 is provided on the door body, and the hinge track plate 13 is provided with a hinge groove 131 and a track groove 132 . The hinge groove 131 is used to accommodate the first wire barrel 111 , the track groove 132 is used to accommodate the second wire barrel 121 , and the second wire barrel 121 can move in the track groove 132 .

The hinge assembly 1 provided by the embodiment of the present disclosure realizes the rotatable connection between the door body and the box body through the cooperation of the hinge plate 11 and the hinge track plate 13 . The hinge plate 11 is provided with a first wire barrel 111 that can accommodate the wire harness, and the wire harness plate 12 is provided with a second wire barrel 121 that can accommodate the wire harness. This provides more space for accommodating the wire harness and avoids wire harness wear caused by partial wire harness being exposed to the outside. . In addition, the second wire barrel 121 is disposed in the track groove 132 and can move in the track groove 132. The door body can be opened to a larger angle, while the second wire barrel 121 rotates at a smaller angle. Therefore, opening and closing of the door exerts less pull on the wire harness passing through the second wire barrel 121, thereby reducing wear on the wire harness passing through the second wire barrel 121.

Among them, the hinge assembly 1 realizes the rotatable connection between the door body and the box body through the cooperation of the hinge plate 11 and the hinge track plate 13, as follows:

The hinge plate 11 is fixedly connected to the box body, and the hinge plate 11 is provided with a first wire barrel 111 . The hinge track plate 13 is fixedly connected to the door body, and is provided with a hinge groove 131 and a track groove 132 . The hinge groove 131 is used to accommodate the first wire barrel 111 , and the hinge groove 131 can rotate with the first wire barrel 111 as a rotation center. By inserting the first wire barrel 111 into the hinge groove 131, the rotatable connection between the hinge plate 11 and the hinge track plate 13 can be completed. Furthermore, the rotatable connection between the door body and the box body can be achieved.

The hinge plate 11 is used to connect the door body and the box body, and at the same time, it can limit the movement range of the second wire barrel 121.

Referring to FIG. 3 , the first end 112 of the hinge plate 11 is fixedly connected to the box body, and the second end 113 of the hinge plate 11 is provided with a first wire barrel 111 . The first wire barrel 111 is adapted to enter the hinge groove 131 . With this arrangement, the rotatable connection between the box body and the hinge track plate 13 can be achieved.

Optionally, referring to Figure 3, the top of the first wire barrel 111 is provided with an extended edge. By providing the extended edge, the first wire barrel 111 is firmly fixed to the hinge plate 11 and prevents the first wire barrel 111 from falling off from the hinge plate 11 due to force.

Optionally, referring to FIG. 3 , a first opening 1113 is provided on a side of the first wire barrel 111 away from the first end 112 .

By providing the first opening 1113 on the side of the first wire barrel 111 away from the first end 112 , it is convenient for the wire harness to enter the first wire barrel 111 .

Optionally, referring to FIG. 3 , the first wire barrel 111 includes a first side 1111 and a second side 1112 . The first side 1111 and the second side 1112 are opposite sides, and along the length direction of the box, the first side 1111 is closer to the outside of the box than the second side 1112.

Among them, the box has length, width and height. When the refrigerator is in normal use, the height of the cabinet extends in the vertical direction, the width of the cabinet is the distance between the front panel and the rear panel of the refrigerator, and the length of the refrigerator is the distance between the two sides of the refrigerator. The refrigerator has a box opening. The surface where the box opening is located is the front panel of the refrigerator, and the surface opposite to the front panel of the refrigerator is the rear panel of the refrigerator.

Optionally, referring to FIG. 3 , the hinge plate 11 is also provided with a first stopper 114 . The first stopper 114 is disposed on the second end 113 of the hinge plate 11 and is connected to the first side 1111 of the first wire barrel 111. The first stopper 114 extends in a direction away from the first end 112.

By providing the first stopper 114, the movement range of the second wire barrel 121 can be limited to an appropriate range. In this way, it can be avoided that the excessive movement range of the second wire barrel 121 causes pulling on the wire harness in the second wire barrel 121 , and collision between the second wire barrel 121 and the hinge box can also be avoided.

Optionally, referring to FIG. 4 , when the opening angle of the door body is greater than or equal to the first preset angle, the second wire barrel 121 moves within the range defined by the first stopper 114 and the track groove 132 .

With this arrangement, the movement range of the second wire barrel 121 can be controlled within an appropriate range, and the pulling and wearing of the wire harness caused by an excessive rotation angle of the second wire barrel 121 can be avoided. In addition, this setting will not affect the opening and closing of the door, nor will it reduce the opening angle of the door.

Optionally, the first stopper 114 is linear. This arrangement facilitates the arrangement of the hinge assembly.

Optionally, referring to FIG. 3 , the hinge plate 11 is also provided with a second stopper 115 . The second stopper 115 is provided at the second end 113 of the hinge plate 11 and is connected to the second side 1112 of the first wire barrel 111. The second stopper 115 extends along the length direction of the box.

By providing the second stopper 115, the movement range of the second bobbin 121 can be limited to an appropriate range. In this way, it is possible to prevent the second wire barrel 121 from having an excessive movement range and pulling the wire harness in the second wire barrel 121 , and also to avoid the second wire barrel 121 from colliding with the hinge box.

Optionally, referring to FIG. 5 , when the opening angle of the door is less than or equal to the second preset angle, the second wire barrel 121 moves within the range defined by the second stopper 115 and the track groove 132 .

With this arrangement, the movement range of the second wire barrel 121 can be controlled within an appropriate range, and the pulling and wearing of the wire harness caused by an excessive rotation angle of the second wire barrel 121 can be avoided. In addition, this setting will not affect the opening and closing of the door, nor will it reduce the opening angle of the door.

Optionally, the second stopper 115 is in an inwardly concave arc shape. This arrangement facilitates the arrangement of the hinge assembly.

Optionally, referring to FIG. 6 , when the opening angle of the door body is less than the first preset angle and greater than the second preset angle, the second wire barrel 121 moves within the range defined by the track groove 132 .

With this arrangement, the movement range of the second wire barrel 121 can be controlled within an appropriate range, and the pulling and wearing of the wire harness caused by an excessive rotation angle of the second wire barrel 121 can be avoided.

Optionally, referring to FIG. 7 , the extension line of the first stop portion 114 and the outer tangent line of the second stop portion 115 form a first included angle α ₁ , and the first included angle α ₁ ranges from 75° to 125°. °. For example, the value of the first included angle α ₁ may be 75°, 80°, 85°, 90°, 95°, 100°, 120° or 125°, etc.

Optionally, the maximum angle at which the second wire barrel 121 can rotate is less than or equal to the first included angle α ₁ . It can be understood that the outer diameter of the second spool 121 affects the maximum angle at which the second spool 121 can rotate. When the outer diameter of the second spool 121 is close to zero, the maximum angle at which the second spool 121 can rotate is close to the first angle. Angle α ₁ .

Optionally, with reference to FIGS. 7 and 5 , the first stopper 114 , the second stopper 115 and the hinge plate 11 together form a limiting gap 116 . The second wire barrel 121 is disposed in the limiting gap 116 and moves within the range of the limiting gap 116 with the first wire barrel 111 as the rotation center.

For the wire harness board 12, it is used to provide a second wire barrel 121 that can move within the track groove 132 to increase the space for accommodating the wire harness.

Optionally, referring to FIG. 8 , the second wire barrel 121 is provided with a second opening 123 . This arrangement facilitates the wire harness to pass through the second wire barrel 121 .

Optionally, with reference to FIGS. 8 and 9 , the second opening 123 is provided on the upper part of the second wire barrel 121 , and when the refrigerator door is in a closed state, the second opening 123 faces the hinge plate 11 . This arrangement facilitates the wire harness to pass through the second wire barrel 121 and enter the box.

Optionally, referring to FIG. 9 , the upper surface of the second wire barrel 121 is higher than the upper surfaces of the first stopper 114 and the second stopper 115 .

With this arrangement, when the second spool 121 rotates in the first direction to the first stop 114, the second spool 121 collides with the first stop 114, preventing the second spool 121 from continuing to rotate in the first direction, thereby achieving alignment. The second spool 121 is limited from rotating in the first direction. When the second spool 121 rotates in the second direction to the second stopper 115, the second spool 121 collides with the second stopper 115, preventing the second spool 121 from continuing to rotate in the second direction, thereby achieving the second spool 121. 121 is the limit for rotation in the second direction.

The first direction is the direction in which the door opens, and the second direction is the direction in which the door closes.

Optionally, the outer diameter of the second wire barrel 121 is 10 mm˜18 mm. For example, the outer diameter of the second wire barrel 121 is 14mm.

Optionally, with reference to FIGS. 8 and 9 , the wiring harness board 12 further includes a first fixing member 122 . Among them, the first fixing member 122 is sleeved on the first wire barrel 111, and the first fixing member 122 is fixedly connected to the second wire barrel 121.

By providing the first fixing member 122 , which is sleeved on the first wire barrel 111 and fixedly connected to the second wire barrel 121 , the second wire barrel 121 and the first wire barrel 111 can be rotated as the rotation center.

Optionally, the first fixing part 122 is provided at the lower part of the second wire barrel 121 .

The hinge track plate 13 is used to rotatably connect the door body to the hinge plate 11 . In addition, a track groove 132 is provided for the second wire barrel 121 to limit the deflection angle of the second wire barrel 121 .

Optionally, referring to Figure 10, the track groove 132 is arc-shaped. Such arrangement can ensure the movement space of the second wire barrel 121 in the track groove 132 without occupying too much door space.

Optionally, the central angle α ₂ corresponding to the arc ranges from 30° to 60°, and the maximum angle at which the door body can be opened is less than or equal to α ₁ + α ₂ . For example, the value of the central angle α ₂ corresponding to the arc can be 30°, 35°, 45°, 50° or 65°. For example, the outer diameter of the second wire barrel 121 is 14 mm, and the maximum angle that the second wire barrel 121 can rotate in the track groove 132 is 45°.

Optionally, referring to FIG. 12 , the track groove 132 includes a first groove wall 1321 and a second groove wall 1322 .

The first groove wall 1321 is provided at one end of the track groove 132, and the second groove wall 1322 is provided at the other end of the track groove. The second groove wall 1322 is used to contact the side wall of the second wire barrel 121 to drive the second wire barrel 121 to move in the first direction; the first groove wall 1321 is used to contact the side wall of the second wire barrel 121 to drive the second wire barrel 121 . Barrel 121 moves in the second direction.

Optionally, referring to Figure 11, the hinge groove 131 is connected with the track groove 132, and the hinge groove 131 and the track groove 132 form a gourd shape.

This arrangement facilitates the fitting connection between the hinge track plate 13 , the hinge plate 11 and the wiring harness plate 12 . Specifically, the first wire barrel 111 is disposed in the hinge groove 131 to achieve a rotatable connection between the hinge track plate 13 and the first wire barrel 111 . The first fixing part 122 of the hinge plate 11 is arranged between the hinge groove 131 and the first wire barrel 111, and the second wire barrel 121 of the hinge plate 11 is arranged in the track groove 132, so that the second wire barrel 121 and the first wire barrel 111 can be connected. It is rotatably connected, and at the same time, the movement range of the second wire barrel 121 is limited to the track groove 132 .

Optionally, referring to FIG. 11 , the hinge track plate 13 further includes a fixed barrel 133 . The fixed cylinder 133 is disposed at the lower part of the hinge groove 131 , and the outer diameter of the fixed cylinder 133 is larger than the inner diameter of the hinge groove 131 , and the inner diameter of the fixed cylinder 133 is smaller than the inner diameter of the hinge groove 131 .

The fixing cylinder 133 forms a step structure at the lower part of the hinge groove 131 to facilitate the installation of the first fixing member 122. In addition, by providing the fixing barrel 133, the wire harness can be restrained and the entanglement and wear of the wires caused by too many wires in the wire harness can be alleviated.

Optionally, referring to FIG. 11 , the hinge track plate 13 also includes a fixing plate 134 . The fixing plate 134 is disposed on the side of the hinge track plate 13 and at an end away from the hinge groove 131 .

The fixing plate 134 is provided to facilitate the fixed connection between the hinge track plate 13 and the door body.

It can be understood that the door body is provided with a fixing groove, and the fixing groove is suitable for receiving the fixing plate 134 . By inserting the fixing plate 134 into the fixing groove, the fixed connection between the hinge track plate 13 and the door body is achieved.

The connection schematic diagram of the wire harness board 12 and the hinge track board 13 is shown in Figure 12. The track groove 132 rotates with the central axis of the first fixing member as the center of rotation. The second wire barrel 121 rotates with the center of the first fixing member 122 in the track groove 132. The axis is the center of rotation.

Optionally, the first wire barrel 111, the first fixing member 122 and the hinge groove 131 are sleeved in sequence from the inside to the outside. During the opening and closing process of the door, the first fixed member 122 rotates around the first wire barrel 111, and the second wire The barrel 121 moves in the track groove 132 with the first wire barrel 111 as the rotation center.

With this arrangement, the door body can be opened to a larger angle, while the second wire barrel 121 only needs to be rotated to a smaller angle. Therefore, opening and closing of the door exerts less pull on the wire harness passing through the second wire barrel 121 , thereby reducing wear on the wire harness passing through the second wire barrel 121 .

Optionally, referring to FIG. 4 , when the opening angle of the door body is greater than or equal to the first preset angle, the second wire barrel 121 moves within the range jointly defined by the second groove wall 1322 and the first stopper 114 . Referring to FIG. 5 , when the opening angle of the door body is less than or equal to the second preset angle, the second wire barrel 121 moves within the range jointly defined by the first groove wall 1321 and the second stopper 115 . Referring to FIG. 6 , when the opening angle of the door is less than the first preset angle and greater than the second preset angle, the second wire barrel 121 moves within the range defined by the track groove 132 .

With this arrangement, the door body can be opened to a larger angle (approximately α ₁ + α ₂ ), while the second wire barrel 121 rotates at a smaller angle (approximately α ₁ ). Therefore, opening and closing of the door exerts less pull on the wire harness passing through the second wire barrel 121 , thereby reducing wear on the wire harness passing through the second wire barrel 121 . When the door body is thin, a second wire barrel 121 is added to provide more space for accommodating the wire harness and avoid wire harness wear caused by partial wire harness being exposed to the outside.

In a second aspect, embodiments of the present disclosure provide a door-in-door refrigerator.

13 and 14, the door-in-door refrigerator provided by the embodiment of the present disclosure includes a box body 2, a main door 3, a main door hinge 4, an auxiliary door 5, an auxiliary door hinge 6 and a wiring harness 7.

The box 2 is provided with a box opening and a control part. The main door 3 is arranged on the box body and is used to close or open the box mouth. The main door is equipped with main door electrical components. The main door hinge 4 is used to rotatably connect the main door and the box, wherein the main door hinge 4 is the hinge assembly described in the first aspect. The auxiliary door 5 is provided on the main door 3, and the auxiliary door 5 is provided with auxiliary door electrical components. The auxiliary door hinge 6 is used to rotatably connect the auxiliary door to the main door. The wire harness 7 includes a sub-door wire harness 71 and a main door wire harness 72. The sub-door wire harness 71 is used to connect the sub-door electrical components to the control unit, and the main door wire harness 72 is used to connect the main door electrical components to the control unit. Among them, the auxiliary door wiring harness 71 passes through the main door hinge 4 and the auxiliary door hinge 6, and the main door wiring harness 72 passes through the main door hinge 4.

In the door-in-door refrigerator provided by the embodiment of the present disclosure, the main door 3 and the box 2 can be rotatably connected through the main door hinge 4 . The main door hinge 4 is provided with a first wire barrel 111 and a second wire barrel 121 that can accommodate the wire harness, providing more wiring space for the wire harness 7 and avoiding wire harness wear caused by partial wire harness being exposed to the outside. In addition, the second wire barrel 121 is disposed in the track groove 132 and can move in the track groove 132. The main door 3 can be opened to a larger angle while the second wire barrel 121 rotates at a smaller angle. Therefore, the opening and closing of the main door exerts less pull on the wire harness passing through the second wire barrel 121 , thereby reducing wear on the wire harness passing through the second wire barrel 121 .

Optionally, referring to Figure 14, the auxiliary door harness 71 passes through the auxiliary door hinge 6 from bottom to top, enters the main door 3 from the top of the auxiliary door hinge 6, and then passes through the main door hinge 4 from bottom to top. And enter the box 2 from the top of the main door hinge 4 and connect with the control part. The main door wiring harness 72 passes through the main door hinge 4 from bottom to top, enters the box 2 from the top of the main door hinge 4, and is connected to the control part.

Such an arrangement facilitates the connection between the auxiliary door electrical components and the control unit through the auxiliary door wire harness 71 and the connection between the main door electrical components and the control unit through the main door wire harness 72 .

Optionally, with reference to FIGS. 1 and 2 , the main door hinge 4 includes a hinge plate 11 , a wiring harness plate 12 and a hinge track plate 13 .

The hinge plate 11 is provided on the box body, and the hinge plate 11 is provided with a first wire barrel 111 that can accommodate the wire harness. The wire harness board 12 is provided with a second wire barrel 121 that can accommodate the wire harness. The hinge track plate 13 is provided on the main door 3. The hinge track plate 13 is provided with a hinge groove 131 and a track groove 132. The hinge groove 131 is used to accommodate the first wire bobbin 111, and the track groove 132 is used to accommodate the second wire bobbin 121. 121 can move in the track groove 132.

The auxiliary door harness 71 passes through the first wire barrel 111 and/or the second wire barrel 121 from bottom to top; the main door wire harness 72 passes through the first wire barrel 111 and/or the second wire barrel 121 from bottom to top.

This arrangement facilitates the arrangement of the auxiliary door wire harness 71 and the main door wire harness 72 . In addition, the second wire barrel 121 is disposed in the track groove 132 and can move in the track groove 132. The main door 3 can be opened to a larger angle, while the second wire barrel 121 rotates at a smaller angle. Therefore, the required reserved length and deflection angle of the auxiliary door wire harness 71 and/or the main door wire harness 72 passing through the second wire barrel 121 are smaller. Therefore, opening and closing of the main door exerts less pull on the wire harness passing through the second wire barrel 121 , thereby reducing wear on the wire harness passing through the second wire barrel 121 .

Optionally, the track groove 132 is configured in an arc shape, and the second wire barrel 121 is deflected in the track groove 132 with the first wire barrel 111 as the rotation center. The auxiliary door wire harness 71 and the main door wire harness 72 are provided with a reserved length L, and the reserved length L is used to prevent the main door 3 from rotating and pulling the auxiliary door wire harness 71 and the main door wire harness 72 .

By setting the reserved length L, the rotation of the main door 3 can effectively prevent the auxiliary door wire harness 71 and the main door wire harness 72 from being pulled, thereby reducing the wear on the auxiliary door wire harness 71 and the main door wire harness 72 .

Optionally, the value range of the reserved length L is L≥πR*A/360, where R is the distance between the axis center of the first spool and the axis center of the second spool, and A is the maximum deflection of the second spool. angle.

Such an arrangement can effectively prevent the main door 3 from rotating and pulling the auxiliary door wire harness 71 and the main door wire harness 72 , thereby reducing wear on the auxiliary door wire harness 71 and the main door wire harness 72 .

Optionally, referring to FIG. 15 , the auxiliary door hinge 6 includes a hinge shaft 51 and a hinge seat 52 . At least one surface of the hinge shaft 51 is provided with one or more first communication connection ports 511. Each first communication connection port 511 is used to connect with the auxiliary door electrical components in the auxiliary door. The hinge seat 52 is provided with a groove 521, the groove 521 is suitable for receiving the hinge shaft 51, and at least one inner wall of the groove 521 is provided with one or more second communication connection ports 522. The second communication connection port 522 is used for electrical connection with the terminal located outside the hinge base 52, and the second communication connection port 522 corresponds to the first communication connection port 511 one-to-one. When the hinge shaft 51 is inserted into the groove 521 and the hinge shaft 51 and the hinge base 52 are relatively stationary and rotate relative to each other, each first communication connection port 511 is connected to the corresponding second communication connection port 522 to achieve communication.

The optional sub-door harness 71 includes a first sub-wire harness and a second sub-wire harness.

The first sub-wire harness is used to connect the first communication connection port 511 and the auxiliary door electrical components. The second sub-wire harness is used to connect the second communication connection port 522 and the terminal located outside the hinge base 52 .

The first communication connection port 511 in the auxiliary door hinge 6 is connected to the auxiliary door electrical components through the first sub-wire harness. The second communication connection port 522 in the hinge base 52 is electrically connected to the terminal located outside the hinge base 52 through the second sub-wire harness. By inserting the hinge shaft 51 into the groove 521 in the hinge seat 52, the connection and communication between the first communication connection port 511 and the second communication connection port 522 can be realized, thereby realizing the electrical components of the sub-door during the opening and closing process of the sub-door 5. Electrical connection to terminals. The terminals do not need to pass through the auxiliary door hinge 6, so the auxiliary door hinge provided by the embodiment of the present disclosure can relatively easily connect the terminals to the auxiliary door electrical components.

As for the hinge shaft 51, one end is fixedly connected to the refrigerator door body, and the other end is rotatably connected to the hinge seat 52. The refrigerator door body can be rotatably fixed to the hinge base 52 through the hinge shaft 51 .

Optionally, the shape of the hinge axis 51 includes one or more of a cylinder, a cone, a truncated cone, a stepped cylinder, a stepped cone and a stepped truncated cone.

By setting the shape of the hinge shaft 51 to one or more of a cylinder, a cone, a truncated cone, a stepped cylinder, a stepped cone, and a stepped truncated cone, the rotatable connection between the hinge shaft 51 and the hinge seat 52 is facilitated. Therefore, it is easy to realize the rotatable connection between the refrigerator door body and the hinge base 52, and it is easy to open or close the refrigerator door body.

The shape of the hinge shaft 51 includes one of a cylinder, a cone, a truncated cone, a stepped cylinder, a stepped cone, and a stepped truncated cone. That is to say, the shape of the hinge shaft 51 can be a cylinder, a cone, a truncated cone, or a stepped cylinder. , stepped cone or stepped truncated cone.

The shape of the hinge shaft 51 includes several types of cylinder, cone, truncated cone, stepped cylinder, stepped cone and stepped truncated cone. That is to say, the shape of the hinge shaft 51 can be a cylinder, a cone, a truncated cone, a stepped cylinder, a stepped truncated cone and a stepped truncated cone. A combination of any two, three or more types of cones or stepped truncated cones. For example, the shape of the hinge shaft 51 is a combination of a cylinder and a truncated cone. The truncated cone is arranged on the upper end surface of the cylinder, both the cylinder and the truncated cone extend in the vertical direction, and the center lines of the cylinder and the truncated cone coincide.

Wherein, at least one surface of the hinge shaft 51 is provided with one or more first communication connection ports 511. That is to say, one or more surfaces of the hinge shaft 51 are provided with first communication connection ports 511 , and each surface may be provided with one or more first communication connection ports 511 .

Optionally, with reference to Figures 16 and 17, the shape of the hinge shaft 51 is a first stepped cylinder. The first stepped cylinder at least includes a first cylinder surface 501, a second cylinder surface 502 and a first step surface 503. The second cylindrical surface 502 is provided at the lower part of the first cylindrical surface 501, and the cross-section of the second cylindrical surface 502 is larger than the cross-section of the first cylindrical surface 501. The first step surface 503 connects the first cylindrical surface 501 and the second cylindrical surface 502 . Among them, the first cylindrical surface 501, the second cylindrical surface 502 and the first step surface 503 are each provided with at least one first communication connection port 511.

Setting the shape of the hinge shaft 51 as a first stepped cylinder will not affect the opening or closing of the auxiliary door 5 , and at the same time, the installation area of the first communication connection port 511 can be increased. The hinge shaft 51 can be provided with one or more steps, which can provide a sufficient number of first communication connection ports 511 when the auxiliary door has a large number of electrical components.

It can be understood that the height of the first cylindrical surface 501, the width of the second cylindrical surface 502 and the first step surface 503 can all be adjusted. Here, the width of the first terrace 503 refers to the difference between the radius of the cylinder corresponding to the first cylinder 501 and the radius of the cylinder corresponding to the second cylinder 502 .

Optionally, referring to FIG. 16 , the first stepped cylinder further includes a first end surface 504 . The first cylindrical surface 501, the second cylindrical surface 502, the first step surface 503 and the first end surface 504 together form a first stepped cylinder.

Further, referring to FIG. 16 , the first cylindrical surface 501 , the second cylindrical surface 502 , the first step surface 503 and the first end surface 504 are each provided with a first communication connection port 511 .

Optionally, each first communication connection port 511 is arc-shaped or annular, embedded in the surface of the hinge shaft 51 , and the surface of each first communication connection port 511 is flush with the surface of the hinge shaft 51 where it is located. together. Correspondingly, each second communication connection port 522 located on the hinge base 52 is arc-shaped or annular and embedded in the inner wall of the groove 521. The surface of each second communication connection port 522 is in contact with the groove 521 in which it is located. The inner walls are flush.

By arranging the first communication connection port 511 and the second communication connection port 522 corresponding to the first communication connection port 511 in an arc shape or an annular shape, when the hinge shaft 51 rotates relative to the hinge base 52, the first communication can still be ensured. The connection port 511 is connected to the corresponding second communication connection port 522. This arrangement avoids signal interruption due to the opening or closing of the refrigerator auxiliary door 5 . By arranging the surface of the first communication connection port 511 to be flush with the surface of the hinge shaft 51 where it is located, and the surface of the second communication connection port 522 being arranged to be flush with the inner wall of the groove 521 where it is located, it is convenient to The hinge shaft 51 is inserted into the hinge seat 52 . It is convenient for the first communication connection port 511 to connect with the corresponding second communication connection port 522 to realize communication.

It can be understood that the length of the arc can be adjusted according to the angle of rotation of the auxiliary door 5 when it is opened or closed.

Optionally, referring to FIG. 17 , a first accommodation cavity 512 is provided inside the hinge shaft 51 , and the first accommodation cavity 512 is in an inverted ladder shape.

By arranging the first receiving cavity 512 in an inverted stepped shape inside the hinge shaft 51 , the electrical connection between the auxiliary door electrical components and the first communication connection port 511 is facilitated. Specifically, one end of the first sub-wire harness is connected to the auxiliary door electrical component, and the other end of the first sub-wire harness enters the first receiving cavity 512 and then passes through the inner wall of the hinge shaft 51 to be connected to the first communication connection port 511 of the hinge shaft 51 .

Each first communication connection port 511 is electrically connected to one or more electrical connection ports.

Optionally, referring to Figures 2 and 3, the hinge shaft 51 is also provided with a positioning member 505. The positioning member 505 is arranged in an arc shape or annular shape on the surface of the hinge shaft 51 .

By providing the positioning member 505, the positioning between the hinge shaft 51 and the auxiliary door 5 is facilitated. It can be understood that the auxiliary door 5 is provided with a positioning groove, and the outer diameter of the positioning member 505 is larger than the inner diameter of the positioning groove. One end of the hinge shaft 51 is adapted to enter the positioning groove. When a part of the hinge shaft 51 enters the positioning groove, the positioning member 505 comes into contact with the auxiliary door 5 . Since the outer diameter of the positioning member 505 is greater than the inner diameter of the positioning groove, the hinge shaft 51 is restricted from continuing to enter the positioning groove, thereby achieving positioning between the hinge shaft 51 and the auxiliary door 5 .

Optionally, the material of the first communication connection port 511 includes aluminum or copper.

Both aluminum and copper have excellent electrical conductivity. By setting the material of the first communication connection port 511 to aluminum or copper, it can be connected to the second communication connection port 522 to achieve signal transmission.

Optionally, the hinge shaft 51 is made of polyoxymethylene.

Polyoxymethylene has high strength, light weight, high hardness, high modulus, strong impact, self-lubricating effect during dynamic friction, no noise, high fatigue strength, good creep resistance, and small dielectric loss tangent. and high breakdown voltage. By setting the material of the hinge shaft 51 to polyoxymethylene, the hinge shaft 51 has the advantages of durability, wear resistance, and low door opening and closing noise.

As for the hinge seat 52, one end is rotatably connected to the hinge shaft 51, and the other end is fixedly connected to the main door of the refrigerator through the second sub-wire harness. The hinge shaft 51 can be rotatably fixed to the main door of the refrigerator through the hinge base 52 .

The hinge base 52 is provided with a groove 521 , and the groove 521 is suitable for receiving the hinge shaft 51 .

Optionally, the shape of the space defined by the groove 521 includes one or more of a cylinder, a cone, a truncated cone, a stepped cylinder, a stepped cone and a stepped truncated cone.

It can be understood that the shape of the space defined by the groove 521 is the same as the shape of the hinge shaft 51 . It is convenient for the hinge shaft 51 to enter the groove 521 to realize the rotatable connection between the hinge shaft 51 and the hinge base 52 .

Optionally, at least one inner wall of the groove 521 is provided with one or more second communication connection ports 522 . That is to say, one or more inner walls of the groove 521 are provided with second communication connection ports 522, and each inner wall can be provided with one or more second communication connection ports 522.

Optionally, referring to Figure 17, the shape of the space defined by the groove 521 is a second stepped cylinder. The second stepped cylinder at least includes a first cylindrical inner wall 5211, a second cylindrical inner wall 5212 and a first terrace inner wall 5213. The second cylindrical inner wall 5212 is provided at the lower part of the first cylindrical inner wall 5211, and the cross section of the second cylindrical inner wall 5212 is larger than the cross section of the first cylindrical inner wall 5211. The first terrace inner wall 5213 connects the first cylindrical inner wall 5211 and the second cylindrical inner wall 5212. Among them, the first cylindrical inner wall 5211, the second cylindrical inner wall 5212 and the first ladder inner wall 5213 are each provided with at least one second communication connection port 522.

This arrangement facilitates the insertion of the hinge shaft 51 into the groove 521 and when the hinge shaft 51 and the hinge seat 52 are relatively stationary and rotate relative to each other, each first communication connection port 511 is connected to the corresponding second communication connection port 522 to achieve communication.

Optionally, each second communication connection port 522 is annular and embedded in the inner wall of the groove 521 , and the surface of each second communication connection port 522 is flush with the inner wall of the groove 521 where it is located. Correspondingly, each first communication connection port 511 is annular and embedded in the surface of the hinge shaft 51 , and the surface of each first communication connection port 511 is flush with the surface of the hinge shaft 51 where it is located.

This arrangement facilitates the hinge shaft 51 to be inserted into the hinge seat 52, and the first communication connection port 511 is connected to the corresponding second communication connection port 522 to achieve communication. At the same time, when the hinge shaft 51 rotates relative to the hinge seat 52, it is still ensured that the first communication connection port 511 is connected to the corresponding second communication connection port 522.

Optionally, referring to FIG. 18 , the hinge base 52 includes a fixing part 523 and a first connecting part 524 .

The fixing part 523 extends in the horizontal direction. The first connecting portion 524 is provided at one end of the fixing portion 523 , and the extending direction of the first connecting portion 524 is perpendicular to the extending direction of the fixing portion 523 . Wherein, the groove 521 is provided in the first connecting part 524.

By providing the fixing part 523, it is convenient to be fixedly connected to the main door. By providing the first connecting portion 524, it is convenient to be rotatably connected to the hinge shaft 51. The hinge seat 52 can be used to realize the rotatable connection between the hinge shaft 51 and the main door, thereby realizing the rotatable connection between the auxiliary door and the main door.

Optionally, referring to Figure 19, a second accommodation cavity 5231 is provided inside the fixing part 523, and the second accommodation cavity 5231 is connected to the outside. The wires connected to the second communication connection port 522 pass through the second receiving cavity 5231 and are connected to the terminals located outside the hinge base 52 .

The second receiving cavity 5231 is provided to facilitate electrical connection between the second communication connection port 522 and the terminal located outside the hinge base 52 . Specifically, one end of the second sub-wire harness is connected to the second communication connection port 522 , and the other end of the second sub-wire harness passes through the second receiving cavity 5231 and is electrically connected to the terminal located outside the hinge base 52 .

Optionally, referring to FIG. 19 , one or more third accommodating cavities 5232 are also provided inside the fixing part 523 , and each third accommodating cavity 5232 is connected with the second accommodating cavity 5231 . By providing the third accommodation cavity 5232, it is convenient for the second sub-wire harness to enter the second accommodation cavity 5231.

Optionally, the material of the second communication connection port 522 includes aluminum or copper.

Both aluminum and copper have excellent electrical conductivity. By setting the material of the second communication connection port 522 to aluminum or copper, it can be connected to the first communication connection port 511 to achieve signal transmission.

Optionally, the hinge seat 52 is made of polyoxymethylene.

Polyoxymethylene has high strength, light weight, high hardness, high modulus, strong impact, self-lubricating effect during dynamic friction, no noise, high fatigue strength, good creep resistance, and small dielectric loss tangent. and high breakdown voltage. By setting the material of the hinge shaft 51 to polyoxymethylene, the hinge seat 52 has the advantages of being strong, durable, wear-resistant, and having low door opening and closing noise.

Optionally, referring to Figure 20, the door-in-door refrigerator also includes an auxiliary door hinge box 8 and a main door hinge box 9.

The auxiliary door hinge box 8 is arranged above the main door 3 and is rotatably connected to the auxiliary door 5 . The auxiliary door hinge box 8 covers the auxiliary door hinge 6 . The main door hinge box 9 is disposed above the box body 2 and is rotatably connected to the box body 2 . The main door hinge box 9 covers the main door hinge 4 .

The auxiliary door hinge box 8 is used to cover the auxiliary door hinge 6, and the main door hinge box 9 is used to cover the main door hinge 4, thereby ensuring a unified appearance of the door-in-door refrigerator. Such arrangement can prevent the auxiliary door hinge 6 and the main door hinge 4 from being exposed and affecting the overall effect of the door-in-door refrigerator.

Optionally, the auxiliary door wiring harness 71 enters the auxiliary door hinge box 8 from the upper part of the auxiliary door hinge 6 , enters the main door 3 from the lower part of the auxiliary door hinge box 8 , and then passes from the inside of the main door 3 from bottom to top. Pass through the first wire barrel 111 and/or the second wire barrel 121 , enter the main door hinge box 9 from the upper part of the main door hinge 4 , and then enter the box 2 from the lower part of the main door hinge box 9 .

This arrangement increases the space for accommodating the wire harness and prevents the wire harness from being exposed to the outside. At the same time, it facilitates wiring, ensuring a unified appearance of the door-in-door refrigerator and improving the overall effect of the door-in-door refrigerator.

Optionally, the main door wire harness 72 passes through the first wire bobbin 111 and/or the second wire bobbin 121 from the inside of the main door 3 from bottom to top, and enters the main door hinge box 9 from the upper part of the main door hinge 4, Then enter the box 2 from the lower part of the main door hinge box 9 .

This arrangement increases the space for accommodating the wire harness and prevents the wire harness from being exposed to the outside. At the same time, it facilitates wiring, ensuring a unified appearance of the door-in-door refrigerator and improving the overall effect of the door-in-door refrigerator.

The foregoing description and drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples represent only possible variations. Unless explicitly required, individual components and features are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

Claims (10)

1. A door-in-door refrigerator, characterized in that it includes: The box body is provided with a box mouth and a control part; A main door is provided on the box body and is used to close or open the box mouth. The main door is provided with main door electrical components; Main door hinge, used to rotatably connect the main door and the box; A auxiliary door is provided on the main door, and the auxiliary door is provided with auxiliary door electrical components; A secondary door hinge, used to rotatably connect the secondary door to the main door; Wiring harness, including a sub-door wire harness and a main door wire harness. The sub-door wire harness is used to connect the sub-door electrical components to the control part. The main door wire harness is used to connect the main door electrical components to the control unit. external connection; Wherein, the auxiliary door wire harness passes through the main door hinge and the auxiliary door hinge, and the main door wire harness passes through the main door hinge. 2. The door-in-door refrigerator according to claim 1, characterized in that, The auxiliary door harness passes through the auxiliary door hinge from bottom to top, enters the main door from the top of the auxiliary door hinge, then passes through the main door hinge from bottom to top, and exits from the main door hinge. The top of the main door hinge enters the box and is connected to the control part; The main door wiring harness passes through the main door hinge from bottom to top, enters the box from the top of the main door hinge, and is connected to the control part. 3. The door-in-door refrigerator according to claim 2, wherein the main door hinge includes: A hinge plate is provided on the box body, and the hinge plate is provided with a first wire barrel that can accommodate the wire harness; a wiring harness board provided with a second wire barrel capable of accommodating the wiring harness; and, A hinge track plate is provided on the door body. The hinge track plate is provided with a hinge groove and a track groove. The hinge groove is used to accommodate the first wire barrel, and the track groove is used to accommodate the second wire barrel. The second spool can move in the track groove; Wherein, the auxiliary door wire harness passes through the first wire barrel and/or the second wire barrel from bottom to top; the main door wire harness passes through the first wire barrel and/or the second wire barrel from bottom to top. Second spool. 4. The door-in-door refrigerator according to claim 3, characterized in that, The track groove is set in a first arc shape, and the second wire barrel takes the first wire barrel as a rotation center and deflects within the range of the first arc shape; The auxiliary door wire harness and the main door wire harness are provided with a reserved length L, and the reserved length L is used to prevent the main door from rotating and pulling the auxiliary door wire harness and the main door wire harness. 5. The door-in-door refrigerator according to claim 4, characterized in that, The value range of the reserved length L is L≥πR*A/360, Among them, R is the distance between the axis center of the first spool and the axis center of the second spool, and A is the maximum deflection angle of the second spool. 6. The door-in-door refrigerator according to claim 1, wherein the auxiliary door hinge includes: The hinge shaft has one or more first communication connection ports provided on the surface; the first communication connection port is connected to the auxiliary door electrical components; and, The hinge seat is provided with a groove, the groove is suitable for accommodating the hinge shaft, and the inner wall of the groove is provided with one or more second communication connection ports; the second communication connection port is located outside the hinge seat. The terminals are electrically connected, and the second communication connection port corresponds to the first communication connection port one-to-one; Wherein, when the hinge shaft is inserted into the groove, and the hinge shaft and the hinge seat are relatively stationary and rotate relative to each other, each first communication connection port is connected to the corresponding second communication connection port to achieve communication. . 7. The door-in-door refrigerator according to claim 6, wherein the auxiliary door wiring harness includes: The first sub-wire harness is used to connect the first communication connection port and the auxiliary door electrical component; and, The second sub-wire harness is used to connect the second communication connection port and the terminal located outside the hinge base. 8. The door-in-door refrigerator according to claim 1, characterized in that the door-in-door refrigerator further includes: An auxiliary door hinge box is arranged above the main door and is rotatably connected to the auxiliary door. The auxiliary door hinge box covers the auxiliary door hinge; A main door hinge box is disposed above the box body and is rotatably connected to the box body. The main door hinge box covers the main door hinge. 9. The door-in-door refrigerator according to claim 8, characterized in that, The auxiliary door harness enters the auxiliary door hinge box from the upper part of the auxiliary door hinge, enters the main door from the lower part of the auxiliary door hinge box, and then enters the main door from the inside of the main door from bottom to top. Pass through the first spool and/or the second spool, enter the main door hinge box from the upper part of the main door hinge, and then enter the box from the lower part of the main door hinge box. . 10. The door-in-door refrigerator according to claim 8 or 9, characterized in that, The main door wire harness passes through the first wire bobbin and/or the second wire bobbin from the inside of the main door from bottom to top, and enters the main door hinge from the upper part of the main door hinge. box, and then enter the box from the lower part of the main door hinge box.