CN212409163U - Refrigerator with a door - Google Patents

Abstract

The utility model discloses a refrigerator, refrigerator includes: the air duct device comprises a box body, wherein an open air duct cavity is formed in the rear wall of the box body, and a first inserting part is arranged in the air duct cavity; the air duct back plate is provided with a second inserting portion electrically connected with the fan on one side facing the air duct cavity, and when the air duct cavity is covered by the air duct back plate, the first inserting portion is inserted into the second inserting portion. According to the utility model discloses refrigerator, through having cancelled the wire connection between wind channel backplate and the box, the connected mode of second grafting portion grafting on first grafting portion on the box and the wind channel backplate instead, the length that connecting wire exposes in the wind channel intracavity has been reduced, avoided because of the wire receives the extrusion or damaged risk that takes place short circuit conflagration and electric shock, fall to zero the PL risk, the fault rate of refrigerator has been reduced, the step of assembly or dismantlement wind channel backplate has been simplified, the labor time has both been saved, the dismouting efficiency has been improved again.

Description

Refrigerator with a door

Technical Field

The utility model belongs to the technical field of domestic appliance technique and specifically relates to a refrigerator is related to.

Background

At present, the competition is great in the refrigerator industry, the refrigerator manufacturing mechanization degree is low, most of the refrigerators are completed through manual operation, especially for assembly line production, the calculation is carried out according to seconds, the number of seconds can be increased, the effect obtained through calculation in one year is considerable, the air duct back plate assembly is a very critical part in the refrigerator assembling process, all the completion of the air duct back plate assembly is completed through manual operation, the air duct back plate is firstly placed in a box body, the back plate is held by one hand, the connecting wires are connected with one hand for plugging, some air ducts are sealed even by using covers, and the manual operation is extremely inconvenient.

Receive the restriction of refrigerator inner space, the fan wire is big with sharp evaporation fin contact risk wind, receives the extrusion easily, leads to the wire to break the skin, has the short circuit risk, if the forceful electric power, has the electric shock, the risk of conflagration breaing out. Therefore, the traditional structure and the assembly mode have potential safety hazards of PL, and are time-consuming, labor-consuming and low in efficiency. Simultaneously, when dismantling the backplate, need pull the backplate outwards with very big power, in the twinkling of an eye when dismantling, often break connecting wire or terminal strain, lead to the complete machine to scrap, this also is the difficult problem that whole trade faces.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a refrigerator, the artifical easy dismounting of refrigerator, factor of safety is high, and the fault rate is low.

According to the utility model discloses refrigerator, include: the air duct device comprises a box body, wherein an open air duct cavity is formed in the rear wall of the box body, and a first inserting part is arranged in the air duct cavity; the air duct back plate is connected with the rear wall of the box body and used for sealing the open side of the air duct cavity, a second inserting portion electrically connected with a fan is arranged on one side of the air duct back plate facing the air duct cavity, and the first inserting portion is inserted into the second inserting portion when the air duct back plate is used for sealing the air duct cavity.

According to the utility model discloses refrigerator is connected through having cancelled the wire between wind channel backplate and the box, changes into the connected mode that the second grafting portion on first grafting portion on the box and the wind channel backplate was pegged graft, has reduced connecting wire and has exposed the length at the wind channel intracavity, so, connecting wire can not receive extrusion or damage, has avoided because of the wire receives the risk that extrusion or damage take place short circuit conflagration and electric shock, has reduced the fault rate of refrigerator. In the process of assembling or disassembling the air duct back plate, the step of manually plugging and unplugging the wire terminal is omitted, the step of assembling or disassembling the air duct back plate is simplified, therefore, the labor time is saved, and the disassembly and assembly efficiency is improved.

In some embodiments of the present invention, the second insertion portion includes a positive insertion column and a negative insertion column disposed at an interval, and the first insertion portion includes a positive insertion hole adapted to be inserted and electrically connected to the positive insertion column and a negative insertion hole adapted to be inserted and electrically connected to the negative insertion column.

In some embodiments of the present invention, the positive electrode plug-in post and the negative electrode plug-in post all include: and one end of the conductive column is connected with the air duct back plate, the other end of the conductive column extends towards the air duct cavity, and a conductive part which is suitable for being abutted against the free end of the conductive column is formed on the peripheral wall and/or the bottom wall of the positive electrode insertion hole and the negative electrode insertion hole.

In some embodiments of the present invention, the conductive post comprises: the fixed end is fixedly connected with the air duct back plate; the movable end is movably connected with the fixed end along the extending direction of the conductive column; the elastic piece is respectively connected with the fixed end and the movable end, and when the first inserting part is inserted into the second inserting part, the elastic piece has a force for pushing the movable end to abut against the conductive part.

Further, it forms into the open and other end confined tube-shape of one end to remove the end, the open end orientation of removing the end the stiff end sets up, the one end of elastic component with stiff end fixed connection and the other end are followed the open end that removes the end stretches into in the removal end and with it links to each other to remove the end.

Further, in the extending direction of the conductive column, the movable distance of the moving end is not less than 8 mm.

Further, the bottom wall of the positive electrode jack and the bottom wall of the negative electrode jack are both formed into the conductive part, the conductive part is suitable for being abutted against the end face of the closed end of the movable end, and the surface area of the conductive part is larger than that of the end face of the closed end of the movable end.

Furthermore, the air duct back plate is provided with a through mounting hole in the thickness direction, and the conductive column is arranged at the position of the mounting hole and penetrates through the mounting hole.

Further, the stiff end with the week of mounting hole is followed continuously and is located deviating from of mounting hole one side in wind channel chamber, the removal end passes mounting hole and at least part are located orientation of mounting hole one side in wind channel chamber, wherein, at the perpendicular to on the projection plane of the axis of mounting hole, the maximum width size of stiff end is greater than the aperture of mounting hole.

Furthermore, a sealing element is arranged on the air duct back plate, the sealing element is arranged around the positive pole inserting column and/or the negative pole inserting column, and when the air duct back plate covers the air duct cavity, the sealing element is abutted between the peripheral edge of the positive pole inserting hole and the air duct back plate and/or between the peripheral edge of the negative pole inserting hole and the air duct back plate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of an air duct back plate of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic view of a second mating portion of the duct back plate of the refrigerator shown in FIG. 1;

FIG. 3 is a schematic view of a first mating portion of the duct back plate of the refrigerator shown in FIG. 1;

fig. 4 is a schematic illustration of the first and second insertion parts of the air duct back plate of the refrigerator shown in fig. 1.

Reference numerals:

the refrigerator 100:

an air duct back plate 1, a mounting plate 11, a fan 12, a sealing piece 13,

a second plug-in part 2, a positive plug-in post 21, a conductive post 211, a fixed end 2111, a movable end 2112, an elastic part 2113, a negative plug-in post 22,

a first plug part 3, a positive electrode insertion hole 31, a negative electrode insertion hole 32, and a conductive part 311.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A refrigerator 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

As shown in fig. 1, a refrigerator 100 according to an embodiment of the present invention includes: a cabinet (not shown) and a duct back 1.

Specifically, an open air duct cavity is formed on the rear wall of the box body, and a first insertion part 3 is arranged in the air duct cavity. For example, the casing is formed in a substantially rectangular parallelepiped shape with an open front side, and an air duct chamber open toward the inside of the casing is formed in a rear wall of the casing, and the first insertion portion 3 is provided in the air duct chamber. Thus, the connecting wire terminal on the refrigerator body is replaced by the first inserting part 3, the connecting wire is positioned in the refrigerator body, the length of the connecting wire exposed in the air duct cavity is reduced, the connecting wire cannot be extruded or damaged, and the failure rate of the refrigerator 100 is reduced.

The air duct back plate 1 is connected with the rear wall of the box body and used for sealing the air duct cavity, a second inserting portion 2 electrically connected with the fan 12 is arranged on one side (for example, the front side of the air duct back plate 1 shown in fig. 1) of the air duct back plate 1 facing the air duct cavity, and when the air duct back plate 1 is used for sealing the air duct cavity, the first inserting portion 3 is inserted with the second inserting portion 2. Here, the first inserting part 3 is inserted into the second inserting part 2, and not only includes a power supply connection for supplying power to the fan, but also includes a communication connection for control connection and signal transmission, so as to control the fan 12. From this, replace second grafting portion 2 with the connecting wire terminal on the wind channel backplate 1, connecting wire is located inside the wind channel backplate 1, has reduced the length that connecting wire exposes in the wind channel intracavity, and connecting wire can not receive the extrusion or damaged, has reduced the fault rate of wind channel backplate 1.

According to the utility model discloses refrigerator 100, when assembling wind channel backplate 1, 1 closing cap wind channel chamber of wind channel backplate, first grafting portion 3 on the box is pegged graft with 2 second grafting portions on the wind channel backplate 1, is used for the transmission of controller connection and signal when the electricity is connected. Therefore, an assembly process is reduced, at least 3s of time is saved, the operation time is calculated according to the normal production line of the air-cooled refrigerator 100 and 10 hours of operation, 1200 refrigerators 100 are produced in one day and 30s are produced. 1333 machines can be manufactured in one day, and 133 machines can be manufactured in one day. 189392 more products can be produced in a year according to the calculation of 4 production lines of each company. Moreover, since one wire is broken and has a defect rate of about 5000 wires, the defect rate is reduced by two ten-thousandth.

When dismantling wind channel backplate 1, only need take off wind channel backplate 1 from the box, first grafting portion 3 on the box separates with second grafting portion 2 on the wind channel backplate 1, need not violently drag just can take off wind channel backplate 1, has avoided connecting wire to snap or the terminal distortion to the disability rate of complete machine has been reduced.

Through having cancelled the wire connection between wind channel backplate 1 and the box, the connected mode of pegging graft of first grafting portion 3 on the box and second grafting portion 2 on the wind channel backplate 1 has been changed into, has reduced connecting wire and has exposed the length at the wind channel intracavity, so, connecting wire can not receive extrusion or damage, has avoided because of the wire receives the extrusion or the damage risk that short circuit conflagration and electric shock take place, has reduced refrigerator 100's fault rate. In the process of assembling or disassembling the air duct back plate 1, the step of manually plugging and unplugging the wire terminals is omitted, and the step of assembling or disassembling the air duct back plate 1 is simplified, so that the labor time is saved, and the disassembly and assembly efficiency is improved.

In short, according to the utility model discloses refrigerator 100 has avoided having reduced the fault rate of refrigerator because of the risk that the wire receives extrusion or damaged short circuit conflagration and electric shock of taking place, has simplified the step of assembly or dismantlement wind channel backplate, has both saved the artificial time, has improved dismouting efficiency again.

In some embodiments, the second mating part 2 includes a positive mating post 21 and a negative mating post 22 disposed at a distance, and the first mating part 3 includes a positive receptacle 31 adapted to mate with and electrically connect to the positive mating post 21 and a negative receptacle 32 adapted to mate with and electrically connect to the negative mating post 22. Specifically, the second inserting portion 2 includes a positive inserting column 21 and a negative inserting column 22, the positive inserting column 21 is located on the left side of the air duct back plate 1 (for example, the left side of the air duct back plate 1 shown in fig. 1), the negative inserting column 22 is located on the right side of the air duct back plate 1 (for example, the right side of the air duct back plate 1 shown in fig. 1), and a certain distance is formed between the positive inserting column 21 and the negative inserting column 22.

Wherein, a certain voltage difference exists between the positive plug-in post 21 and the negative plug-in post 22. For example, the positive plug post 21 may be 12V and the negative plug post 22 may be 0V.

As shown in fig. 3, the first plugging portion 3 includes a positive electrode insertion hole 31 and a negative electrode insertion hole 32, the positive electrode insertion hole 31 is adapted to be plugged and electrically connected with the positive electrode plugging column 21, and the negative electrode insertion hole 32 is adapted to be plugged and electrically connected with the negative electrode plugging column 22. Therefore, the connecting wire is prevented from being exposed in the air duct cavity, the short circuit and electric shock risks caused by extrusion or damage of the connecting wire are avoided, the step of plugging and unplugging the connecting terminal is omitted in the operation process, and the assembly efficiency is improved.

In addition, the positive electrode insertion hole 31 and the negative electrode insertion hole 32 are formed on the inner wall of the box body, and can protrude towards the direction of the air duct cavity and also can be sunken towards the direction departing from the air duct cavity.

Further, the positive electrode plug-in post 21 and the negative electrode plug-in post 22 each include: the conductive post 211. As shown in fig. 1, one end of the conductive pillar 211 (for example, the rear end of the conductive pillar 211 shown in fig. 2) is connected to the air duct back plate 1, the other end of the conductive pillar 211 (for example, the front end of the conductive pillar 211 shown in fig. 2) extends into the air duct cavity, and a conductive portion 311 adapted to abut against the free end of the conductive pillar 211 is formed on the peripheral wall and/or the bottom wall of the positive electrode insertion hole 31 and the negative electrode insertion hole 32.

That is, the conductive portion 311 adapted to be brought into contact with the free end of the conductive post 211 is formed inside the positive electrode insertion hole 31 and the negative electrode insertion hole 32, the conductive portion 311 may be formed only on the peripheral wall of the positive electrode insertion hole 31 and the negative electrode insertion hole 32, the conductive portion 311 may be formed only on the bottom wall of the positive electrode insertion hole 31 and the negative electrode insertion hole 32, or the conductive portion 311 may be formed simultaneously on the peripheral wall and the bottom wall of the positive electrode insertion hole 31 and the negative electrode insertion hole 32. Therefore, the plugging contact area of the first plugging part 3 and the second plugging part 2 is increased, so that the resistance is reduced, and the applicable voltage range of the refrigerator 100 is wider.

Further, the conductive pillar 211 includes: a fixed end 2111, a moving end 2112, and a resilient member 2113. The fixed end 2111 is fixedly connected with the air duct back plate 1. The moving end 2112 is movably connected to the fixed end 2111 in the extending direction of the conductive post 211. The elastic member 2113 is connected to the fixed end 2111 and the movable end 2112, and when the first mating part 3 is mated with the second mating part 2, the elastic member 2113 has a force pushing the movable end 2112 to abut against the conductive part 311. Therefore, under the matching of the fixed end 2111, the movable end 2112 and the elastic part 2113, the first inserting part 3 and the second inserting part 2 can be in good inserting contact, and good electric connection and control connection between the fan 12 and the box body are guaranteed.

In some embodiments, as shown in fig. 2, the moving end 2112 is formed in a cylindrical shape having one end (e.g., a rear end of the moving end 2112 shown in fig. 2) opened and the other end (e.g., a front end of the moving end 2112 shown in fig. 2) closed, the opened end of the moving end 2112 is disposed toward the fixed end 2111, one end of the elastic member 2113 (e.g., a rear end of the elastic member 2113 shown in fig. 2) is fixedly connected to the fixed end 2111, and the other end of the elastic member 2113 (e.g., a front end of the elastic member 2113 shown in fig. 2) extends from the opened end of the moving end 2112 into the moving end 2112 and is connected to the moving. Therefore, the conductive column 211 has a simple structure, the processing difficulty of the conductive column 211 is reduced, and the production and processing cost of the conductive column 211 is also reduced.

Further, in the extending direction of the conductive post 211 (for example, in the front-rear direction of the conductive post 211 shown in fig. 2), the movable distance of the moving end 2112 is not less than 8 mm. In other words, the length of the elastic member 2113 is not less than 8 mm. Alternatively, the elastic member 2113 may be a spring. Therefore, before the air duct back plate 1 is assembled, the conductive column 211 is in a free state, and at this time, the length of the conductive column 211 is longest. When the air duct back plate 1 is assembled, the elastic part 2113 is in a compressed state, and under the action of elastic deformation of the elastic part 2113, the first inserting portion 3 and the second inserting portion 2 can be in better inserting contact, so that stable electric connection and control connection between the fan 12 and the box body are ensured. For example, the movable end 2112 may have a retractable length of 8mm, 9mm, 10mm, 11mm, 12mm, etc.

In some embodiments of the present invention, such as shown in fig. 3, the bottom wall of the positive jack 31 and the bottom wall of the negative jack 32 are both formed as the conductive portion 311, the conductive portion 311 is adapted to abut against the end surface of the closed end of the movable end 2112, and the surface area of the conductive portion 311 is larger than the end surface area of the closed end of the movable end 2112. That is, the bottom wall of positive electrode insertion hole 31 is formed as conductive portion 311, and the bottom wall of negative electrode insertion hole 32 is also formed as conductive portion 311. Therefore, the area of the end face of the closed end of the movable end 2112 is smaller than the surface area of the conductive part 311, so that the closed end of the movable end 2112 can be fully contacted with the conductive part 311, and the assembly error of the air duct back plate 1 in a vertical plane is reduced, thereby ensuring stable electric connection and control connection between the fan 12 and the box body, and avoiding a poor contact state.

In some embodiments, the duct back plate 1 is formed with a through-hole (not shown) in the thickness direction, and the conductive column 211 is disposed at the position of the through-hole and penetrates through the through-hole. From this, simple structure, it is convenient to make, has reduced the installation degree of difficulty that leads electrical pillar 211, has reduced the manufacturing cost of wind channel backplate 1.

Specifically, the duct back plate 1 includes: a back plate body (not shown) and a mounting plate 11. The mounting plate 11 is connected to the back plate main body, the mounting plate 11 is located on one side of the back plate main body facing the air duct cavity (for example, the front side of the air duct back plate 1 shown in fig. 1), at least a part of the mounting plate 11 is spaced from the back plate main body in the thickness direction of the air duct back plate 1, and the mounting hole may penetrate through the mounting plate 11 in the thickness direction. Alternatively, the mounting hole may also completely penetrate the duct back plate 1 in the thickness direction.

In some embodiments, the fixed end 2111 is connected to a periphery of the mounting hole, and the fixed end 2111 is located on a side of the mounting hole facing away from the air duct cavity (e.g., a rear side of the mounting plate 11 shown in fig. 1), the movable end 2112 passes through the mounting hole, and the movable end 2112 is at least partially located on a side of the mounting hole facing toward the air duct cavity (e.g., a front side of the mounting plate 11 shown in fig. 2), wherein a maximum width dimension of the fixed end 2111 is greater than an aperture diameter of the mounting hole on a projection plane perpendicular to an axis of the mounting hole. Therefore, the fixing end 2111 can be stably fixed in the mounting hole, the failure rate of the air duct back plate 1 is reduced, and the service life of the refrigerator 100 is prolonged.

Referring to fig. 4, a sealing member 13 is disposed on the air duct back plate 1, the sealing member 13 is disposed around the positive plug-in post 21 and/or the negative plug-in post 22, and when the air duct back plate 1 covers the air duct cavity, the sealing member 13 abuts between the peripheral edge of the positive plug hole 31 and the air duct back plate 1 and/or between the peripheral edge of the negative plug hole 32 and the air duct back plate 1. Specifically, the sealing member 13 may be disposed around the positive electrode insertion column 21, the sealing member 13 may be disposed around the negative electrode insertion column 22, and the sealing member 13 may be disposed around the positive electrode insertion column 21 and the negative electrode insertion column 22, respectively. Therefore, after assembly, the sealing element 13 is extruded and deformed to be in compression contact with the periphery of the positive electrode insertion hole 31, so that moisture outside cannot enter the positive electrode insertion hole 31, the service life of the air duct back plate 1 is prolonged, and the service life of the refrigerator 100 is prolonged.

Optionally, the seal 13 is an annular sponge. Thus, when the air duct back plate 1 is installed, a certain buffering effect is achieved, abrasion caused by vibration when the fixed end 2111 is in contact with the positive electrode insertion hole 31 is reduced, and the service life of the refrigerator 100 is prolonged.

The following describes in detail the method for assembling and disassembling the refrigerator 100 according to the embodiment of the present invention:

when the air duct back plate 1 is assembled, the air duct cavity is covered by the air duct back plate 1, the positive pole inserting column 21 and the negative pole inserting column 22 on the air duct back plate 1 are respectively inserted into the positive pole inserting hole 31 and the negative pole inserting hole 32 on the box body, the moving ends 2112 on the positive pole inserting column 21 and the negative pole inserting column 22 are respectively abutted to the conductive parts 311 in the positive pole inserting hole 31 and the negative pole inserting hole 32, wherein the elastic parts 2113 of the positive pole inserting column 21 and the negative pole inserting column 22 ensure the stable electric connection and control connection of the fan 12 and the box body, and the state of poor contact does not exist.

When the air duct back plate 1 is detached, the air duct back plate 1 only needs to be taken down from the box body, the positive pole inserting column 21 and the negative pole inserting column 22 on the air duct back plate 1 respectively withdraw from the positive pole inserting hole 31 and the negative pole inserting hole 32 on the box body, the air duct back plate 1 can be taken down without being pulled vigorously, the connecting wires are prevented from being pulled apart or the terminals are prevented from being pulled and deformed, and therefore the rejection rate of the whole machine is reduced.

The utility model discloses refrigerator 100 is connected through having cancelled the wire between wind channel backplate 1 and the box, changes into the connected mode of pegging graft with second grafting portion 2 in first grafting portion 3, has reduced connecting wire and has exposed the length at the wind channel intracavity, so, connecting wire can not receive extrusion or damaged, has avoided because of the wire receives the risk that extrusion or damaged short circuit conflagration and electric shock take place, has reduced refrigerator 100's fault rate. In the process of assembling or disassembling the air duct back plate 1, the step of manually plugging and unplugging the wire terminals is omitted by using the elastic deformation of the spring, the step of assembling or disassembling the air duct back plate 1 is simplified, and stable electric connection and control connection can be ensured, so that the labor time is saved, and the disassembly and assembly efficiency is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A refrigerator, characterized by comprising:

the air duct device comprises a box body, wherein an open air duct cavity is formed in the rear wall of the box body, and a first inserting part is arranged in the air duct cavity;

the air duct back plate is connected with the rear wall of the box body and used for sealing the air duct cavity, a second inserting portion electrically connected with a fan is arranged on one side, facing the air duct cavity, of the air duct back plate, and when the air duct cavity is sealed by the air duct back plate, the first inserting portion is inserted into the second inserting portion.

2. The refrigerator as claimed in claim 1, wherein the second insertion part includes a positive insertion post and a negative insertion post disposed at an interval, and the first insertion part includes a positive insertion hole adapted to be inserted and electrically connected with the positive insertion post and a negative insertion hole adapted to be inserted and electrically connected with the negative insertion post.

3. The refrigerator of claim 2, wherein the positive and negative insertion posts each comprise: and one end of the conductive column is connected with the air duct back plate, the other end of the conductive column extends towards the air duct cavity, and a conductive part which is suitable for being abutted against the free end of the conductive column is formed on the peripheral wall and/or the bottom wall of the positive electrode insertion hole and the negative electrode insertion hole.

4. The refrigerator of claim 3, wherein the conductive pillar comprises:

the fixed end is fixedly connected with the air duct back plate;

the movable end is movably connected with the fixed end along the extending direction of the conductive column;

the elastic piece is respectively connected with the fixed end and the movable end, and when the first inserting part is inserted into the second inserting part, the elastic piece has a force for pushing the movable end to abut against the conductive part.

5. The refrigerator as claimed in claim 4, wherein the moving end is formed in a cylindrical shape having one end opened and the other end closed, the opened end of the moving end is disposed toward the fixed end, and one end of the elastic member is fixedly connected to the fixed end and the other end thereof protrudes into the moving end from the opened end of the moving end and is connected to the moving end.

6. The refrigerator according to claim 5, wherein a movable distance of the moving end in an extending direction of the conductive pillar is not less than 8 mm.

7. The refrigerator according to claim 5, wherein the bottom wall of the positive electrode insertion hole and the bottom wall of the negative electrode insertion hole are each formed as the conductive portion, the conductive portion is adapted to abut against an end face of the closed end of the moving end, and a surface area of the conductive portion is larger than an end face area of the closed end of the moving end.

8. The refrigerator as claimed in claim 4, wherein the duct back plate is formed with a mounting hole penetrating in a thickness direction, and the conductive post is provided at a position of the mounting hole and passes through the mounting hole.

9. The refrigerator of claim 8, wherein the fixed end is connected to the periphery of the mounting hole and located on a side of the mounting hole facing away from the air duct chamber, and the movable end passes through the mounting hole and is at least partially located on a side of the mounting hole facing the air duct chamber, wherein a maximum width dimension of the fixed end is greater than an aperture of the mounting hole on a projection plane perpendicular to an axis of the mounting hole.

10. The refrigerator as claimed in claim 2, wherein a sealing member is disposed on the air duct back plate, the sealing member is disposed around the positive plug-in post and/or the negative plug-in post, and when the air duct back plate covers the air duct cavity, the sealing member abuts between a peripheral edge of the positive plug hole and the air duct back plate and/or between a peripheral edge of the negative plug hole and the air duct back plate.

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