Door locking device and refrigerator comprising same

Abstract

The utility model provides a door locking device and a refrigerator comprising the same. The door locking device comprises a push rod connected to one of a door body and a refrigerator body of the refrigerator, the push rod can move to a first preset position used for being locked, a second preset position used for opening the door body and a third preset position used for closing the door body, and a locking hole is formed in the push rod; and the locking part is connected to the other one of the door body and the box body, and the locking part can move to or leave a preset locking position so as to lock or unlock the push rod. And when the locking part is located at the first preset position, the locking part is used for locking the push rod at the first preset position or unlocking the push rod from the first preset position, and the locking part comprises a locking rod. According to the door locking device, matching of the locking part and the push rod is achieved through matching of the locking rod and the locking hole, the structure of the door locking device is further simplified, the locking hole is formed in the push rod, the influence on the structure of the push rod is small, and the requirement for operating the structure of the push rod is lowered.

Description

Technical Field

[0001] The utility model relates to the field of refrigerators, and particularly to a door locking device and a refrigerator including the same. Background Art

[0002] Traditional refrigerators all adopt the opening method of manually pulling the door. During daily use, it is rather laborious to open the door, and it may be accidentally opened due to children or other reasons.

[0003] In view of the situation that it is laborious to open the refrigerator door, there are some refrigerators with automatic door opening devices on the market. The automatic door opening of the refrigerator is mainly to open holes near the door body of the refrigerator. The refrigerator push rod cooperates with the opening when in the extended state. When the user needs to open the door and gives an opening instruction, the push rod can be extended to push open the refrigerator door.

[0004] In view of the situation of accidental opening, there are correspondingly refrigerators with built-in door locks. However, most refrigerator door locks are independent devices and are usually set in a rather complicated refrigerator structure.

[0005] Based on this, this case intends to solve the above two problems of the refrigerator while improving the overall cooperation degree of the two devices, and designs a device with a more concise structure and lower manufacturing cost. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the defects that the cooperation degree between the automatic door opening device and the door lock of the existing refrigerator is not high, the refrigerator structure is rather complicated, and the manufacturing cost is relatively high, and to provide a door locking device and a refrigerator including the same.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] A door locking device for locking the door body of a refrigerator to limit door opening, the door locking device comprising:

[0009] A push rod, the push rod is connected to one of the door body and the refrigerator cabinet, and the push rod can move to a first preset position for being locked, a second preset position for opening the door body, and a third preset position for closing the door body, and a locking hole is provided on the push rod;

[0010] A locking part, the locking part is connected to the other of the door body and the cabinet, and the locking part can move to or away from a preset locking position to lock or unlock the push rod;

[0011] Wherein, when the push rod is located at the first preset position, it is used to lock the push rod at the first preset position or unlock the push rod from the first preset position, and the locking part includes a locking rod that cooperates with the locking hole;

[0012] When the push rod is located at the second preset position or the third preset position, the locking portion leaves the preset locking position, and the locking rod retracts from the locking hole to separate from the push rod.

[0013] In this solution, the push rod of the automatic door-opening refrigerator is used as a part of the door-locking device of the refrigerator. A locking portion is provided to lock the push rod, and the locking portion and the push rod are respectively arranged on the door body and the box body, so as to limit the opening of the refrigerator door. This door-locking device has a high degree of compatibility with the push-rod type automatic door-opening refrigerator, utilizes the original push rod structure, has a lower manufacturing cost, and can be arranged inside the refrigerator body together with the push rod, which is more concealed and beautiful; on the basis of the general movement of the push rod to the door-pushing position (corresponding to the second preset position) and the retraction position (corresponding to the third preset position), a first preset position for being locked is added, and the cooperation effect between it and the locking portion can be achieved by adjusting the movement position of the push rod, and the structure is simple. In addition, the cooperation between the locking rod and the locking hole is used to realize the cooperation between the locking portion and the push rod, which is beneficial to further simplify the structure of the door-locking device, and the locking hole is arranged on the push rod, which has little influence on the structure of the push rod and is beneficial to reducing the requirements for the structure of the operating push rod.

[0014] Preferably, the door-locking device further includes a first driving device, the first driving device is connected to the push rod, and the first driving device is used to drive the push rod to move;

[0015] And / or, the door-locking device further includes a second driving device, the second driving device is connected to the locking portion, and the second driving device is used to drive the locking rod to move linearly to or away from the preset locking position.

[0016] In this solution, a first driving device for driving the push rod is provided to realize the automatic control of the push rod; the locking rod moves to or away from the preset locking position through linear motion, with a simple structure and convenient operation, which is beneficial to more conveniently and reliably realizing the engagement or separation between the locking rod and the locking hole.

[0017] Preferably, the second driving device includes a power source and a transmission component, the power source is connected to the input end of the transmission component and is used to drive it to rotate, and the output end of the transmission component is connected to the locking rod and is used to drive the locking rod to move linearly.

[0018] In this solution, the second driving device includes a transmission component, which transmits the acting force from the power source to the locking rod, enabling the locking rod to be arranged away from the power source, reducing the restrictions on the size or movement of the locking rod by the size or position of the power source; the transmission component can transform the acting form of the power source, such as converting circular motion into linear motion, etc., so as to adjust the motion form according to different locking requirements, with a more perfect structure and better structural adaptability.

[0019] Preferably, the transmission assembly includes a first connecting shaft, a runner, a second connecting shaft and a connecting rod;

[0020] Wherein, the first connecting shaft and the second connecting shaft are arranged at both ends of the runner, the first connecting shaft is arranged at the center of the runner and serves as the input end to be connected with the power source, and the second connecting shaft is offset from the center of the runner;

[0021] The connecting rod is connected between the second connecting shaft and the locking rod. The runner drives the connecting rod to rotate through the second connecting shaft, and the connecting rod serves as the output end to drive the locking rod to move linearly.

[0022] In this solution, by arranging a runner that rotates around the central first connecting shaft in the transmission assembly, the first conversion of power is realized, that is, the circular rotation is converted into the circular rotation of the rim position around the first connecting shaft, so as to indirectly realize the transformation of the motion form of the connecting rod assembly - the locking rod; by arranging the connecting rod, the freedom degree of the moving direction of the locking rod is improved.

[0023] Preferably, the transmission assembly further includes a limiting member, and the limiting member acts on the locking rod to limit the rotation of the locking rod relative to the connecting rod and make the locking rod move linearly along its extending direction.

[0024] In this solution, a preset track is set for the second connecting rod through the limiting member, so that the second connecting rod moves along the expected direction, indirectly limiting the moving direction of the locking rod, thereby avoiding the limitations of the limiting part on the size or movement of the locking rod, and enabling the structural form of the locking rod to be adjusted as required.

[0025] Preferably, the limiting member includes two relatively arranged limiting plates, and the two limiting plates are used to enclose a limiting channel. The locking rod passes through the limiting channel, and the two limiting plates are respectively located on the upper and lower sides of the locking rod in the thickness direction;

[0026] Or, the limiting member is a limiting plate, the limiting plate is fixedly arranged, and the limiting plate has a limiting hole for the locking rod to pass through.

[0027] In this solution, two limiting plates are used as the limiting member, surrounding the upper and lower sides of the locking rod to form a limiting channel. This limiting member suits the structural characteristics of the locking rod, and has a simple structure and low cost. Setting the limiting member as a fixedly arranged limiting plate enables the locking rod to pass through the limiting hole of the limiting plate, and the limiting structure is simpler and more reliable.

[0028] Preferably, when the push rod is located at the first preset position, the central axis of the locking rod is collinear with the central axis of the locking hole.

[0029] In this solution, with the above structure, the locking rod and the locking hole can be engaged or disengaged relatively quickly and reliably, which is beneficial to improving the efficiency and reliability of locking or unlocking the push rod.

[0030] A refrigerator includes a door locking device according to any one of the above solutions.

[0031] Preferably, the refrigerator further includes a baffle, which is connected to the door body or the box body connected to the locking portion and is arranged in the axial extension direction of the push rod. The baffle can move to or away from the blocking position;

[0032] When the baffle is in the blocking position, the baffle is used for the push rod in the second preset position to abut against to open the door body;

[0033] When the baffle leaves the blocking position, the push rod can move to the first preset position for being locked.

[0034] In this solution, a movable baffle is added to the door locking device. When the push rod needs to be locked, the baffle leaves the blocking position, so that the push rod can move to the preset locked position without contacting the door body, preventing the door body from being accidentally pushed open; when the push rod needs to push open the door body or the push rod retracts, the baffle moves to the blocking position to serve as the pushed part of the door body; the baffle can be used to shield the locking portion at the same time, that is, when the locking portion does not need to work, the baffle blocks the axial movement path of the push rod, which can be used for sealing to protect the locking portion, or shielding the locking portion to improve the aesthetic degree, etc.

[0035] Preferably, the refrigerator includes a third driving device, which is connected to the baffle, and the third driving device is used to drive the baffle to move to or away from the blocking position.

[0036] In this solution, the third driving device can be flexibly adjusted according to the use scenario. By setting different structural forms of the third driving device or adjusting the connection mode between the third driving device and the baffle, etc., different movement forms of the baffle can be realized to achieve automatic control.

[0037] The positive and progressive effects of the present utility model are as follows:

[0038] In this door locking device, the push rod of an automatic door opening refrigerator is used as part of the door locking device of the refrigerator. A locking portion is provided to lock the push rod, and the locking portion and the push rod are respectively arranged on the door body and the box body, thereby restricting the opening of the refrigerator door. This door locking device has a high degree of compatibility with the push rod type automatic door opening refrigerator, utilizes the original push rod structure, has a lower manufacturing cost, and can be arranged inside the refrigerator body together with the push rod, which is more concealed and beautiful. On the basis of the general movement of the push rod to the door pushing position (corresponding to the second preset position) and the retraction position (corresponding to the third preset position), a first preset position for being locked is added, and the cooperation effect between it and the locking portion can be achieved by adjusting the movement position of the push rod, and the structure is simple. In addition, the cooperation of the locking rod and the locking hole is used to realize the cooperation between the locking portion and the push rod, which is beneficial to further simplify the structure of the door locking device, and the locking hole is arranged on the push rod, which has little influence on the structure of the push rod and is beneficial to reducing the requirements for the structure of the operating push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 FIG. is a schematic structural diagram of a door locking device according to an embodiment of the present invention.

[0040] Figure 2 FIG. is a partial structural diagram of a door locking device according to an embodiment of the present invention.

[0041] Figure 3 FIG. is another partial structural diagram of a door locking device according to an embodiment of the present invention.

[0042] Figure 4 FIG. is a schematic structural diagram of the push rod of a door locking device according to an embodiment of the present invention.

[0043] Figure 5 FIG. is a schematic structural diagram of the limiting member of a door locking device according to an embodiment of the present invention.

[0044] Figure 6 FIG. is a schematic flow diagram of automatically locking the door of a refrigerator by using a door locking device according to an embodiment of the present invention.

[0045] Figure 7 FIG. is a schematic flow diagram of automatically unlocking the door of a refrigerator by using a door locking device according to an embodiment of the present invention.

[0046] DESCRIPTION OF THE REFERENCE NUMERALS:

[0047] Locking rod 11

[0048] Transmission assembly 12

[0049] Input end 121

[0050] Output end 122

[0051] First connecting shaft 123

[0052] Rotating wheel 124

[0053] Second connecting shaft 125

[0054] Connecting rod 126

[0055] Limiting part 13

[0056] Limiting hole 131

[0057] Push rod 2

[0058] Locking hole 21 Specific implementation manner

[0059] A preferred embodiment is given below and in conjunction with the accompanying drawings to more clearly and completely illustrate the present utility model.

[0060] As Figures 1 to 5 shown, this embodiment provides a door locking device, and the door locking device includes a push rod 2 and a locking part. Among them, the push rod 2 is connected to one of the door body and the refrigerator cabinet body. The push rod 2 can move to a first preset position for being locked, a second preset position for opening the door body, and a third preset position for closing the door body, and a locking hole 21 is provided on the push rod 2. The locking part is connected to the other of the door body and the cabinet body. Therefore, when the locking part locks the push rod 2, the door body and the cabinet body of the refrigerator are indirectly locked, that is, the door locking effect is achieved.

[0061] Correspondingly, the locking part can move to or away from a preset locking position to lock the push rod 2 at the first preset position or unlock the push rod 2 from the first preset position, and the locking part includes a locking rod 11 that cooperates with the locking hole 21.

[0062] Among them, when the push rod 2 is at the first preset position, the locking part moves to the preset locking position, and the locking rod 11 passes through the locking hole 21 to engage with the push rod 2. When the push rod 2 is at the second preset position or the third preset position, the locking part leaves the preset locking position, and the locking rod 11 retracts from the locking hole 21 to separate from the push rod 2.

[0063] In the present utility model, the push rod 2 can move to three positions, respectively corresponding to the three states of pushing the door, locking the door, and not working of the push rod 2. On the basis of the original door-pushing function of the push rod 2, the door-locking function is added by using the original push rod 2, so that the door-locking device of the present utility model has a high degree of compatibility with the push-rod type automatic door-opening refrigerator. Moreover, by adjusting the moving position of the push rod 2, the cooperation effect with the locking part can be achieved, and the structure is simple and the manufacturing cost is low.

[0064] In this embodiment, the push rod 2 of the automatic door-opening refrigerator is used as a part of the door-locking device of the refrigerator. A locking portion is provided to lock the push rod 2, and the locking portion and the push rod 2 are respectively arranged on the door body and the box body, so as to limit the opening of the refrigerator door. This kind of door-locking device has a high degree of cooperation with the push-rod type automatic door-opening refrigerator, utilizes the original push-rod structure, has a lower manufacturing cost, and can be arranged inside the refrigerator body together with the push rod 2, which is more concealed and beautiful; on the basis of the general movement of the push rod 2 to the door-pushing position (corresponding to the second preset position) and the retraction position (corresponding to the third preset position), a first preset position for being locked is added, and the cooperation effect between it and the locking portion can be achieved by adjusting the movement position of the push rod 2, and the structure is simple. In addition, the cooperation between the locking rod 11 and the locking hole 21 is adopted to realize the cooperation between the locking portion and the push rod 2, which is beneficial to further simplify the structure of the door-locking device, and the locking hole 21 is arranged on the push rod 2, which has little influence on the structure of the push rod 2 and is beneficial to reducing the requirements for the structure of operating the push rod 2.

[0065] Those skilled in the art should understand that the push rod used here is the push rod in the common refrigerator automatic door-opening device in the prior art. In this embodiment, the push rod 2 as shown in Figure 4 is selected, and in the actual implementation process, the push rods 2 of other types of refrigerators are also equally applicable to the present invention.

[0066] The door-locking device in this embodiment further includes a second driving device. The second driving device is connected to the locking portion and is used to drive the locking rod 11 to move linearly to or away from the preset locking position. The specific structure and driving form of the second driving device should also be adjusted according to the use scenario. The specific structure of the driving device detailed below is a preferred embodiment, which is only used as an example of the present invention.

[0067] As Figures 1 to 3 shown, the driving device includes a transmission component 12 and a power source not shown in the figure. Among them, the power source can be a common motor, or other power sources adapted to the corresponding transmission component 12 as required. The power source is connected to the input end 121 of the transmission component 12 and is used to drive it to rotate, and the output end 122 of the transmission component 12 is connected to the locking rod 11 and is used to drive the locking rod 11 to move linearly. In this way, the acting force from the power source is transmitted to the locking rod 11. The locking rod 11 can be arranged away from the power source, reducing the restrictions on the size or movement of the locking rod 11 due to the size or position of the power source; in addition, the transmission component 12 can change the acting form of the power source, such as converting circular motion into linear motion, etc., so as to adjust the motion form according to different locking requirements, and the structure is more perfect and the structural adaptability is better.

[0068] During the implementation process, those skilled in the art can also adjust the movement mode of the output end 122 by adjusting the transmission component 12 to adapt to the actual situation.

[0069] Refer to Figures 1 to 3 It should be understood that the transmission assembly 12 includes a first connecting shaft 123, a runner 124, a second connecting shaft 125 and a connecting rod 126. Among them, the first connecting shaft 123 and the second connecting shaft 125 are arranged at both ends of the runner 124. The first connecting shaft 123 is arranged at the center of the runner 124 and serves as the input end 121 to be connected to the power source. The second connecting shaft 125 is offset from the center of the runner 124. Through this connection method, when the power source drives the first connecting shaft 123 to rotate, it will drive the entire runner 124 to rotate around the center, thereby driving the eccentric second connecting shaft 125 to rotate, and indirectly realizing the transformation of the motion form of the locking rod 11.

[0070] The connecting rod 126 is connected between the second connecting shaft 125 and the locking rod 11. The runner 124 drives the connecting rod 126 to rotate through the second connecting shaft 125. The connecting rod 126 serves as the output end 122 to drive the locking rod 11 to perform a linear motion. Through this connection method, the freedom degree of the moving direction of the locking rod 11 is improved. The locking rod 11 can perform a linear reciprocating motion driven by the connecting rod 126. In actual implementation, those skilled in the art can change the moving distance and form of the locking rod 11 by adjusting the number and connection method of the connecting rods to meet the actual shielding requirements.

[0071] Furthermore, the transmission assembly 12 of this embodiment further includes a limiting member 13. The limiting member 13 acts on the locking rod 11 to limit the rotation of the locking rod 11 relative to the connecting rod 126 and enable the locking rod 11 to perform a linear motion along its extending direction. In this embodiment, a preset track is set for the locking rod 11 through the limiting member 13, so that the locking rod 11 moves along the expected direction, indirectly limiting the moving direction of the locking rod 11, thereby avoiding the restrictions on the size or movement of the locking rod 11 by the limiting portion.

[0072] Under the action of the power source, the runner 124 drives the locking rod 11 to move through the connecting rod 126, so that the locking rod 11 passes through the locking hole 21 of the push rod 2, thereby restricting the movement of the push rod 2 and achieving the purpose of automatically locking the door. The process of unlocking the door body is the opposite.

[0073] As Figures 1 to 2 、 Figure 5 shown, the limiting member 13 is a limiting plate 131. The limiting plate 131 is fixedly arranged and has a limiting hole 132 for the locking rod 11 to pass through. Setting the limiting member 13 as the fixedly arranged limiting plate 131 enables the locking rod 11 to pass through the limiting hole 132 of the limiting plate 131, and the limiting structure is simpler and more reliable.

[0074] Among them, the limiting plate 131 can be fixed on the door body or the box body of the refrigerator through any applicable connection structure.

[0075] In other alternative embodiments, the limiting member 13 may also include two oppositely arranged limiting plates 131. The two limiting plates 131 are used to enclose a limiting channel, and the locking rod 11 is arranged to pass through the limiting channel. Then, the two limiting plates 131 are respectively located on the upper and lower sides of the locking rod 11 in the thickness direction. It is equivalent to that the two limiting plates 131 surround the upper and lower sides of the locking rod to form a limiting channel. This limiting member suits the structural characteristics of the locking rod, and has a simple structure and low cost.

[0076] As a preferred setting method, when the push rod 2 is located at the first preset position, the central axis of the locking rod 11 coincides with the central axis of the locking hole 21. With such a setting, the locking rod 11 and the locking hole 21 can be engaged or separated more quickly and reliably, which is beneficial to improving the efficiency and reliability of locking or unlocking the push rod 2.

[0077] Similarly, a first driving device with a matching structure can be set for the push rod 2. The first driving device is connected to the push rod 2 and is used to drive the push rod 2 to move to realize the automatic control of the push rod 2.

[0078] This embodiment also provides a refrigerator, which includes the above-mentioned door locking device. The refrigerator of this embodiment further includes a baffle, which is connected to the door body or the box body connected to the locking part and is arranged in the axial extension direction of the push rod 2. The baffle can move to or away from the blocking position. The baffle opens when the push rod 2 is used to push the door, and moves to the blocking position when closing the door or when the push rod 2 is used to lock the door. The main purpose of setting this baffle is to enable the push rod 2 to move to a preset locked position without contacting the door body, preventing the door body from being accidentally pushed open; when the push rod 2 needs to push open the door body, or when the push rod 2 retracts, the baffle moves to the blocking position to serve as the pushed part of the door body; in addition, the baffle can be used to shield the locking part at the same time, that is, when the locking part does not need to work, the baffle blocks the axial movement path of the push rod 2, which can be used for sealing to protect the locking part, or can shield the locking part to improve the aesthetic degree.

[0079] Similar to the foregoing, the refrigerator further includes a third driving device, which is connected to the baffle and is used to drive the baffle to move to or away from the blocking position. Among them, the third driving device can be flexibly adjusted according to the use scenario. By setting different structural forms of the third driving device, or adjusting the connection mode between the third driving device and the baffle, etc., different movement forms of the baffle can be realized to achieve automatic control.

[0080] It should be noted that the first driving device and the third driving device in this embodiment are not specifically limited here, and any driving device applicable to this in the prior art can be adopted.

[0081] Next, in combination with Figure 6 and Figure 7Briefly describe the steps involved in automatically locking and unlocking the door of the refrigerator using this door locking device.

[0082] The door of the refrigerator is equipped with a touchable central control panel, and the central control panel has two touch buttons for self-locking and unlocking.

[0083] Taking the left refrigerated door of a double-door refrigerator as an example, as Figure 6 shown, when the user clicks the self-locking button on the central control panel, it is judged whether the left refrigerated door is self-locked. If it is already locked, the process ends; if it is not self-locked, after the push rod 2 moves to a certain position, the locking lever 11 moves to a certain position to complete the door locking process.

[0084] Correspondingly, still taking the left refrigerated door of a double-door refrigerator as an example, as Figure 7 shown, when the user clicks the unlocking button on the central control panel, it is judged whether the left refrigerated door is self-locked. If it is not self-locked, the process ends; if it is already self-locked, after the locking lever 11 moves to a certain position, the push rod 2 moves to a certain position to complete the unlocking process.

[0085] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A door locking device, used to lock the door of a refrigerator to restrict the door from being opened, characterized in that: The door locking device comprises: a push rod, the push rod being connected to one of the door body and the refrigerator body, and the push rod being movable to a first preset position for being locked, a second preset position for opening the door body, and a third preset position for closing the door body, and the push rod being provided with a locking hole; a locking portion, the locking portion being connected to the other of the door body and the box body, and the locking portion being able to move to or leave a preset locking position, so as to lock the push rod at the first preset position or unlock the push rod from the first preset position, and the locking portion comprising a locking rod matched with the locking hole; Wherein, when the push rod is located at the first preset position, the locking portion moves to the preset locking position, and the locking rod passes through the locking hole to engage with the push rod; When the push rod is located at the second preset position or the third preset position, the locking portion leaves the preset locking position, and the locking rod retracts from the locking hole to be separated from the push rod.

2. The door locking device according to claim 1, characterized in that: The door locking device further comprises a first driving device, the first driving device is connected to the push rod, and the first driving device is used to drive the push rod to move; And / or, the door locking device further includes a second driving device, the second driving device is connected to the locking portion, and the second driving device is used to drive the locking rod to move linearly to or away from the preset locking position.

3. The door locking device according to claim 2, characterized in that: The second driving device includes a power source and a transmission assembly, wherein the power source is connected to the input end of the transmission assembly and is used to drive the transmission assembly to rotate, and the output end of the transmission assembly is connected to the locking rod and is used to drive the locking rod to move linearly.

4. The door locking device according to claim 3, characterized in that: The transmission assembly includes a first connecting shaft, a rotating wheel, a second connecting shaft and a connecting rod; Wherein, the first connecting shaft and the second connecting shaft are arranged at two ends of the rotating wheel, the first connecting shaft is arranged at the center of the rotating wheel and connected to the power source as the input end, and the second connecting shaft is offset from the center of the rotating wheel; The connecting rod is connected between the second connecting shaft and the locking rod, the rotating wheel drives the connecting rod to rotate through the second connecting shaft, and the connecting rod serves as the output end to drive the locking rod to move linearly.

5. The door locking device according to claim 4, characterized in that: The transmission assembly further comprises a limiter, which acts on the locking rod to limit the rotation of the locking rod relative to the connecting rod and enables the locking rod to move linearly along its extending direction.

6. The door locking device according to claim 5, characterized in that: The limiting member comprises two limiting plates arranged opposite to each other, the two limiting plates are used to enclose a limiting channel, the locking rod is passed through the limiting channel, and the two limiting plates are respectively located at the upper and lower sides of the locking rod along the thickness direction; Alternatively, the limiting member is a limiting plate, the limiting plate is fixedly arranged, and the limiting plate has a limiting hole for the locking rod to pass through.

7. The door locking device according to any one of claims 1 to 6, characterized in that: When the push rod is located at the first preset position, the central axis of the locking rod is collinear with the central axis of the locking hole.

8. A refrigerator, characterized in that: The refrigerator comprises a door locking device as described in any one of claims 1-7.

9. The refrigerator according to claim 8, characterized in that: The refrigerator further comprises a baffle, which is connected to the door body or the box body to which the locking portion is connected and is arranged in the axial extension direction of the push rod, and the baffle can be moved to or away from a blocking position; When the baffle is at the blocking position, the baffle is used for the push rod at the second preset position to abut against the baffle to open the door body; When the baffle leaves the blocking position, the push rod can move to a first preset position for being locked.

10. The refrigerator according to claim 9, characterized in that: The refrigerator comprises a third driving device, which is connected to the baffle and is used for driving the baffle to move to or leave the blocking position.

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