Door lock device, control method thereof and refrigerator

Abstract

The invention provides a door lock device and a control method thereof and a refrigerator, and the door lock device comprises a lock ring seat arranged on a refrigerator body and provided with a lock ring hole; the signal acquisition component is arranged on the box body and / or the door body and is used for acquiring and outputting a door opening signal and a door closing signal; the locking structure is arranged on the inner side of the door body, and the locking structure comprises a spring bolt corresponding to the lock ring hole and a driving piece used for driving the spring bolt to stretch out or retract; the controller is used for controlling the driving piece to drive the spring bolt to extend out according to the door closing signal, so that the spring bolt penetrates through the lock ring hole to realize locking; the controller is used for controlling the driving piece to drive the spring bolt to retract according to the door opening signal, so that the spring bolt is separated from the lock ring hole to realize unlocking; the refrigerator is convenient to use by a user, the experience feeling of the user is improved, and meanwhile it is guaranteed that the overall appearance of the refrigerator is attractive.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigerator equipment, and more specifically, relates to a door lock device and a control method thereof, and a refrigerator. Background Art

[0002] With the development of society and the improvement of people's living standards, people's requirements for refrigerators are becoming more and more demanding in terms of safety and intelligence in addition to traditional storage functions.

[0003] Currently, many refrigerator products with locks mostly use simple mechanical locks and require users to manually unlock them with a key before they can open the door. This is not convenient for users and reduces the user experience. In addition, most glass door refrigerator products do not have the conditions for locking because a key hole must be opened on the glass, and the production process is complicated and costly, and the key hole has a greater impact on the overall appearance of the refrigerator. Summary of the invention

[0004] The purpose of the present invention is to provide a door lock device and a control method thereof, and a refrigerator, so as to solve the problem that the mechanical door locks existing in the prior art are inconvenient to use.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention first proposes a door lock device, which is arranged on a box having a door body, and comprises:

[0007] A lock ring seat is arranged on the box body, and a lock ring hole is formed on the lock ring seat;

[0008] A signal acquisition component, disposed on the box and / or the door body, for acquiring and outputting a door opening signal and a door closing signal;

[0009] A locking structure is arranged inside the door body, and the locking structure comprises a locking tongue corresponding to the locking ring hole and a driving member for driving the locking tongue to extend or retract;

[0010] The controller is used to control the driving member to drive the lock tongue to extend according to the door closing signal, so that the lock tongue passes through the lock ring hole to achieve locking; and is used to control the driving member to drive the lock tongue to retract according to the door opening signal, so that the lock tongue disengages from the lock ring hole to achieve unlocking.

[0011] Furthermore, the door body includes an upper door body and a lower door body which are arranged on the box body from top to bottom, an embedded box for accommodating the locking structure is provided in the foam layer of the upper door body, a lock hole for the lock tongue to pass through is provided in the lower end cover of the upper door body, a lock groove for the lock tongue to extend into is provided in the upper end cover of the lower door body, and when the upper door body and the lower door body are both closed, the gap between the lower end cover and the upper end cover is for the lock ring seat to extend into.

[0012] Furthermore, a gear is provided at the driving end of the driving member, and the locking tongue is provided with a rack hole meshing with the gear.

[0013] Furthermore, the signal acquisition component includes:

[0014] An infrared sensor, disposed outside the box, for generating the door opening signal and outputting it to the controller when sensing an obstruction above;

[0015] The door sensor is arranged inside the box body, and is used to generate the door closing signal and output it to the controller when sensing that the door body is closed.

[0016] Furthermore, the signal acquisition component includes:

[0017] A biometric information collection and recognition module, disposed on the door body, for generating the door opening signal according to the user's biometric information and outputting the signal to the controller;

[0018] and / or,

[0019] An infrared receiver is arranged on the door body, and is used for receiving the door opening signal from the mobile terminal and outputting the signal to the controller.

[0020] Furthermore, the biometric information collection and identification module includes any one or a combination of any two of a fingerprint collection and identification unit, a voiceprint collection and identification unit, and a face collection and identification unit.

[0021] The present invention further provides a refrigerator, comprising a cabinet and a door, wherein the door is locked to the cabinet by the door locking device as described above.

[0022] The present invention further provides a method for controlling a door lock device, wherein the door lock device is the door lock device as described above, and the method for controlling the door lock device comprises:

[0023] Get the door opening signal;

[0024] Controlling the door lock device to unlock according to the door opening signal;

[0025] Get the door closing signal;

[0026] The door lock device is controlled to lock according to the door closing signal.

[0027] Further, controlling the door lock device to lock according to the door closing signal includes:

[0028] Determining whether door closing signals equal to the number of door bodies are received;

[0029] If so, control the door lock device to lock.

[0030] Further, obtaining the door opening signal includes:

[0031] Obtaining the door opening signal generated by the infrared sensor sensing an obstruction above;

[0032] or;

[0033] The door opening signal generated based on a preset door opening mode is obtained, and the preset door opening mode adopts any one of a fingerprint unlocking mode, a voice unlocking mode, a face unlocking mode and an infrared remote control unlocking mode.

[0034] Compared with the prior art, the door lock device and control method thereof and refrigerator proposed in the present invention have the following beneficial effects: the lock ring seat and the locking structure are arranged inside the product, which ensures the overall appearance of the product is beautiful; at the same time, the door opening signal and the door closing information are transmitted to the controller through the signal acquisition component, and then the controller controls the extension and contraction of the lock tongue in the locking structure to realize the locking and unlocking of the door lock device, which is convenient for users to use and improves the user experience. It is well adapted to glass door refrigerator products and has a wider application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 It is a structural schematic diagram of the refrigerator in the present invention;

[0037] Figure 2 It is a schematic cross-sectional view of the door lock device of the present invention when locked;

[0038] Figure 3 for Figure 2 The enlarged structural diagram at B in the middle;

[0039] Figure 4 It is a schematic diagram of the front structure of the upper door body in the present invention;

[0040] Figure 5It is a schematic diagram of the back structure of the upper door body in the present invention;

[0041] Figure 6 It is a schematic diagram of the cross-sectional structure of the upper door body in the present invention;

[0042] Figure 7 It is a schematic diagram of the enlarged structure of point A in the present invention;

[0043] Figure 8 It is a schematic diagram of the main structure of the lock tongue in the present invention;

[0044] Fig. 9 It is a side view structural schematic diagram of the lock tongue in the present invention;

[0045] Fig.10 The process diagram of unlocking and locking in the present invention is shown in FIG. Figure 1 ;

[0046] Fig.11 The process diagram of unlocking and locking in the present invention is shown in FIG. Figure 2 ;

[0047] Among them, the main marks of the drawings in the figure are:

[0048] 1. Box body;

[0049] 2. Door body; 21. Upper door body; 22. Lower door body; 211. Lower end cover; 221. Upper end cover; 212. Lock hole; 222. Lock slot;

[0050] 3. Lock ring seat; 31. Lock ring hole;

[0051] 4. Locking structure; 41. Driving member; 42. Lock tongue; 421. Rack hole;

[0052] 51. Infrared sensor; 52. Door sensor;

[0053] 6. Controller. DETAILED DESCRIPTION

[0054] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0055] With the development of society and the improvement of people's living standards, people's requirements for refrigerators are getting higher and higher in terms of safety and intelligence in addition to traditional storage functions. At present, many refrigerators with locks are mostly simple mechanical locks and require users to manually unlock them with keys before they can open the door. This is not convenient for users and reduces the user experience. In addition, most glass door refrigerators do not have locks because the production process is complicated and the cost is high to open the lock hole on the glass, and the lock hole has a great impact on the overall appearance of the refrigerator.

[0056] Based on this, the present invention proposes a door lock device and a control method thereof, and a refrigerator. By intelligently controlling the unlocking and locking of the door lock device, the user can use the door more conveniently, thereby increasing the user experience. There is no need to open a lock hole on the front of the refrigerator door shell, thereby ensuring the overall beautiful appearance of the refrigerator.

[0057] Please also read Figure 1 , Figure 2 and Figure 3 The door lock device proposed by the present invention is applied to a refrigerator, the refrigerator comprises a box body 1 and a door body 2 which can be opened and closed and is arranged on the box body 1; the door lock device comprises:

[0058] A lock ring seat 3 is arranged on the box body 1, and a lock ring hole 31 is formed on the lock ring seat 3;

[0059] A signal acquisition component is arranged on the box body 1 and / or the door body 2, and is used to obtain and output a door opening signal and a door closing signal;

[0060] The locking structure 4 is arranged on the inner side of the door body 2, and the locking structure 4 includes a locking tongue 42 corresponding to the locking ring hole 31 and a driving member 41 for driving the locking tongue 42 to extend or retract;

[0061] The controller 6 is used to control the driving member 41 to extend the lock tongue 42 according to the door closing signal, so that the lock tongue 42 passes through the lock ring hole 31 to achieve locking; and is used to control the driving member 41 to retract the lock tongue 42 according to the door opening signal, so that the lock tongue 42 disengages from the lock ring hole 31 to achieve unlocking.

[0062] The present invention arranges the lock ring seat 3 and the locking structure 4 inside the product, ensuring the overall appearance of the product is beautiful; at the same time, the door opening signal and the door closing information are transmitted to the controller 6 through the signal acquisition component, and then the controller 6 controls the extension and contraction of the lock tongue 42 in the locking structure 4 to realize the locking and unlocking of the door lock device, which is convenient for users to use and improves the user experience. It is well adapted to glass door refrigerator products and has a wider application range.

[0063] In practical applications, the door lock device proposed in the present invention can be extended to single-door, double-door, multi-door and other refrigerator products.

[0064] More preferably, if Figure 1 , Figure 3 As shown, the door body 2 includes an upper door body 21 and a lower door body 22 which are arranged on the box body 1 from top to bottom. An embedded box for accommodating the locking structure 4 is provided in the foam layer of the upper door body 21. The lower end cover 211 of the upper door body 21 is provided with a lock hole 212 for the lock tongue 42 to pass through, and the upper end cover 221 of the lower door body 22 is provided with a lock groove 222 for the lock tongue 42 to extend into, and when the upper door body 21 and the lower door body 22 are both closed, the gap between the lower end cover 211 and the upper end cover 221 is for the lock ring seat 3 to extend into.

[0065] The door lock device proposed in the present invention is suitable for upper and lower door refrigerator products. The locking structure 4 is pre-buried in the foam layer of the upper door body 21, and a lock hole 212 is opened in the lower end cover 211 of the upper door body 21 and a lock groove 222 is opened in the upper end cover 221 of the lower door body 22. This design prevents the locking structure 4, the lock hole 212 and the lock groove 222 from being directly exposed to the outside, thereby ensuring the overall appearance of the refrigerator is beautiful.

[0066] Figure 4 The front structural diagram of the upper door body 21 is shown. Figure 5 The back structural diagram of the upper door body 21 is shown. It can be seen that the front side of the upper door body 21 has no holes, so the lock hole 212 in the refrigerator cannot be seen from the outside.

[0067] It should be understood that the locking structure 4 in the present invention is an integrated structure, and is assembled to the back of the metal door shell of the refrigerator or the glass door of the refrigerator, and is positioned by tooling during installation.

[0068] More preferably, if Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, a gear is provided at the driving end of the driving member 41, and the locking tongue 42 is provided with a rack hole 421 meshing with the gear.

[0069] The driving member 41 may be, but is not limited to, a motor. The driving end of the driving member 41 can realize forward and reverse rotation. When the driving end rotates forward, the lock tongue 42 is driven to extend through the cooperation of the gear and the rack hole 421 until the lock tongue 42 moves to the maximum position and the driving end stops forward rotation; when the driving end rotates reversely, the lock tongue 42 is driven to retract through the cooperation of the gear and the rack hole 421 until the lock tongue 42 moves to the minimum position and the driving end stops reverse rotation.

[0070] The present invention has a rack hole 421 on the lock tongue 42 and a gear on the driving member 41. The gear cooperates with the rack hole 421 to realize that the rotation of the driving member 41 can drive the lock tongue 42 to perform a telescopic action. The structure is simple and easy to implement.

[0071] More preferably, if Figure 1As shown, the signal acquisition component includes:

[0072] The infrared sensor 51 is arranged outside the box 1 and is used to generate a door opening signal and output it to the controller 6 when sensing an obstruction above;

[0073] The door sensor 52 is disposed inside the housing 1 and is used to generate a door closing signal and output it to the controller 6 when sensing that the door 2 is closed.

[0074] In actual application, the infrared sensor 51 can be set at a suitable height outside the refrigerator to prevent children from opening the door at will and causing some safety problems. The door sensor 52 corresponds to the door 2 one by one, and the door sensor 52 can be but not limited to a door light switch.

[0075] The present invention generates a door opening signal through the infrared sensor 51 and outputs it to the controller 6, and generates a door closing signal through the door body sensor 52 and outputs it to the controller 6, so that the controller 6 can receive the door opening signal and the door closing signal. This intelligent control makes it more convenient for users to use and increases the user experience.

[0076] Further preferably, the signal acquisition component includes:

[0077] A biometric information collection and recognition module is provided on the door body 2 and is used to generate a door opening signal according to the user's biometric information and output it to the controller 6;

[0078] and / or,

[0079] The infrared receiver is arranged on the door body 2 and is used for receiving the door opening signal from the mobile terminal and outputting it to the controller 6 .

[0080] Among them, the biometric information collection and identification module includes any one or any combination of fingerprint collection and identification units, voiceprint collection and identification units and face collection and identification units.

[0081] By setting a biometric information collection and recognition module and / or an infrared receiver, the present invention can provide more preset door opening modes for users to choose from, such as fingerprint unlocking mode, voice unlocking mode, face unlocking mode and infrared remote control unlocking mode, so as to better improve the user experience.

[0082] See also Figure 1 The refrigerator proposed in the present invention includes a box body 1 and a door body 2. The door body 2 is locked on the box body 1 through a door locking device. The structure of the door locking device has been described in detail above and will not be repeated here.

[0083] The present invention enables the refrigerator to have a locking function and simultaneously ensures that the overall appearance of the refrigerator is beautiful.

[0084] Based on the specific structure of the door lock device described above, the control method of the door lock device proposed by the present invention includes the following steps:

[0085] Get the door opening signal;

[0086] Control the door lock device to unlock according to the door opening signal;

[0087] Get the door closing signal;

[0088] The door lock device is controlled to lock according to the door closing signal.

[0089] The present invention can automatically obtain a door opening signal and a door closing signal, and intelligently control the unlocking and locking of a door lock device based on the door opening signal and the door closing signal, thereby saving time and labor and improving user experience.

[0090] In practical applications, the control method of the door lock device proposed in the present invention can be extended to single-door, double-door, multi-door and other refrigerator products.

[0091] Further preferably, controlling the door lock device to lock according to the door closing signal comprises:

[0092] Determine whether the door closing signals equal to the number of door bodies are received;

[0093] If so, the door lock device is controlled to lock.

[0094] Before controlling the door lock device to lock, the present invention further determines whether the number of door closing signals is equal to the number of door bodies, ensuring that the user cannot open any door body after the door lock device is locked.

[0095] Further preferably, obtaining the door opening signal includes:

[0096] Obtain a door opening signal generated by the infrared sensor sensing an obstruction above;

[0097] or;

[0098] A door opening signal generated based on a preset door opening mode is obtained, where the preset door opening mode adopts any one of a fingerprint unlocking mode, a voice unlocking mode, a face unlocking mode and an infrared remote control unlocking mode.

[0099] In actual application, when the user's hand passes over or stays above the infrared sensor, the infrared sensor generates a door opening signal. The door opening signal generated by the infrared sensor does not require the user to manually unlock the door with a key, making it more convenient for the user to use and improving the user experience. At the same time, the present invention also provides a variety of preset door opening modes for the user to choose from, so as to improve the user experience.

[0100] For better understanding, a complete description is given below using a refrigerator with upper and lower doors as an example.

[0101] like Figures 1 to 9 As shown, the refrigerator includes a cabinet 1, an upper door body 21, a lower door body 22 and a door lock device. The door lock device includes a lock ring seat 3, a signal acquisition component, a locking structure 4 and a controller 6. Preferably, the controller 6 not only executes the control method of the door lock device, but also executes the refrigerator refrigeration control method. The controller 6 is set on the refrigerator main control board, and the controller 6 is connected to the signal acquisition component and the locking structure 4.

[0102] Among them, the lock ring seat 3 is arranged on the box body 1, and the lock ring seat 3 is provided with a lock ring hole 31. The locking structure 4 is arranged on the back of the upper door body 21; specifically, an embedded box is provided in the foam layer of the upper door body 21, and the locking structure 4 is placed in the embedded box. The locking structure 4 includes a driving member 41 and a lock tongue 42, and the driving end of the driving member 41 is provided with a gear, and the lock tongue 42 is provided with a rack hole 421; when the driving member 41 rotates, the lock tongue 42 is driven to perform a telescopic action through the cooperation of the gear and the rack hole 421. The lower end cover 211 of the upper door body 21 is provided with a lock hole 212 for the lock tongue 42 to pass through, and the upper end cover 221 of the lower door body 22 is provided with a lock groove 222 for the lock tongue 42 to extend into.

[0103] The signal acquisition component includes an infrared sensor 51, two door sensors 52, a biometric information collection and recognition module and an infrared receiver; the infrared sensor 51 is arranged on the top of the outer side of the box body 1, and is used to generate a door opening signal and output it to the controller 6 when sensing an obstruction above; one of the two door sensors 52 is arranged on the inner side of the box body 1 and corresponds to the upper door body 21, and is used to generate a door closing signal and output it to the controller 6 when sensing that the upper door body 21 is closed, and the other is arranged on the inner side of the box body 1 and corresponds to the lower door body 22, and is used to generate a door closing signal and output it to the controller 6 when sensing that the lower door body 22 is closed. The biometric information collection and recognition module and the infrared receiver are arranged on the door body 2, and the biometric information collection and recognition module includes a fingerprint collection and recognition unit, a voiceprint collection and recognition unit and a face collection and recognition unit.

[0104] In simple terms, the locking process of the door lock device is as follows: the signal acquisition component obtains the door closing signal and transmits it to the controller 6, and the controller 6 controls the driving end of the driving member 41 to rotate forward according to the door closing signal, and the lock tongue 42 moves downward through the cooperation of the gear of the driving member 41 and the rack hole 421 of the lock tongue 42. During the downward movement of the lock tongue 42, it successively passes through the lock hole 212 of the upper end cover 221 and the lock ring hole 31 of the lock ring seat 3 and then extends into the lock groove 222 of the lower end cover 211, thereby achieving locking, and the user cannot open the upper door body 21 and the lower door body 22. The unlocking process of the door lock device is as follows: the signal acquisition component obtains the door opening signal and transmits it to the controller 6, and the controller 6 controls the driving end of the driving member 41 to reverse according to the door opening signal, and the lock tongue 42 moves up through the cooperation of the gear of the driving member 41 and the rack hole 421 of the lock tongue 42. During the upward movement of the lock tongue 42, it successively disengages from the lock groove 222 of the lower end cover 211, the lock ring hole 31 of the lock ring seat 3 and the lock hole 212 penetrating the upper end cover 221, thereby realizing unlocking, and the user can open the upper door body 21 and the lower door body 22.

[0105] Since there are various ways for the signal acquisition component to obtain the door opening signal, two specific examples in practical applications are given below.

[0106] like Fig.10 As shown, Example 1:

[0107] The refrigerator is in normal use, the upper and lower doors are closed, and the door lock device remains locked;

[0108] If the infrared sensor senses an obstruction above, it generates a door opening signal and transmits it to the controller;

[0109] After receiving the door opening signal, the controller controls the door lock device to unlock;

[0110] After unlocking, the user can open and close the door, and then determine whether the user opens the door;

[0111] If the user does not open or close the door, the door sensor senses the door, generates a door closing signal and transmits it to the controller, then the controller controls the door lock device to unlock for t seconds (the specific time can be adjusted by the user) and then automatically locks; if the infrared sensor does not generate a door opening signal, the controller controls the door lock device to remain locked;

[0112] If the user opens the door, the door sensor cannot sense the door, that is, the door sensor does not generate a door closing signal, then the controller controls the door lock device to remain unlocked;

[0113] When either the upper door or the lower door of the refrigerator is in the open state, that is, the controller only receives a door closing signal, the door lock device remains in the unlocked state;

[0114] When both the upper door and the lower door of the refrigerator are open, the controller will not receive a door closing signal, and the door lock device will remain unlocked;

[0115] When the upper door and the lower door of the refrigerator are both closed, the controller receives two door closing signals, and then the controller controls the door lock device to automatically lock after a delay of t seconds.

[0116] In addition, during normal operation, the door lock device is usually provided with a low-voltage DC power supply by a power board; when the power is cut off, since a dry battery is arranged in the lower end cover of the upper door body, the door lock device is temporarily powered by the dry battery and the door lock device is switched to the unlocked state.

[0117] like Fig.11 As shown, Example 2:

[0118] When the refrigerator is in normal use, the upper and lower doors are closed and the door lock device remains locked;

[0119] When the user needs to open the door, choose to enable the door opening method. The door opening method is divided into three modes: voice unlocking mode, fingerprint unlocking mode and infrared remote control unlocking mode.

[0120] When the user selects the voice unlocking mode, the user's face recognition is performed to wake up the display screen, and if the user speaks a language consistent with the preset language, such as "unlock", "unlock", etc., the door lock device is controlled to unlock. In this mode, the user can use voice control to select which door or doors of the refrigerator to open.

[0121] When the user selects the fingerprint unlocking mode, the user presses the finger with the input fingerprint on the fingerprint button. After the fingerprint button recognizes the fingerprint, it compares the fingerprint with the fingerprint stored in the database. After a successful match, the door lock device is controlled to unlock, and the user can open the door;

[0122] When the user selects the infrared remote control unlocking mode, the user uses the mobile phone APP to control the door to open, that is, the mobile phone outputs the door opening signal, the infrared receiver on the refrigerator receives the door opening signal, and the controller door lock device unlocks.

[0123] After the user opens the door, he or she can take or store items in the refrigerator, and then he or she can close the door manually; if the user does not close the door after a period of time T (such as 30 seconds), the controller controls the refrigerator to close the door automatically.

[0124] The refrigerator has n (n≥2) doors, and the control method for determining whether the door lock device is locked (i.e., on state) is as follows: when any door of the refrigerator is in an open state, that is, the controller can only receive one door-closing signal, the door lock device is controlled to remain in an unlocked state (i.e., off state); when all the doors of the refrigerator are opened, the controller does not receive a door-closing signal, and the door lock device is controlled to remain in an unlocked state (i.e., off state); when all the doors of the refrigerator are closed, the controller receives n door-closing signals, and the controller controls the door lock device to automatically lock after a delay of t seconds (i.e., on state).

[0125] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A door lock device, the door lock device being arranged on a box having a door body, characterized in that: The door lock device comprises: A lock ring seat is arranged on the box body, and a lock ring hole is formed on the lock ring seat; A signal acquisition component, disposed on the box and / or the door body, for acquiring and outputting a door opening signal and a door closing signal; A locking structure is arranged inside the door body, and the locking structure comprises a locking tongue corresponding to the locking ring hole and a driving member for driving the locking tongue to extend or retract; The controller is used to control the driving member to drive the lock tongue to extend according to the door closing signal, so that the lock tongue passes through the lock ring hole to achieve locking; and is used to control the driving member to drive the lock tongue to retract according to the door opening signal, so that the lock tongue disengages from the lock ring hole to achieve unlocking.

2. The door lock device according to claim 1, characterized in that: The door body includes an upper door body and a lower door body which are arranged on the box body from top to bottom. An embedded box for accommodating the locking structure is provided in the foam layer of the upper door body. A lock hole for the lock tongue to pass through is provided in the lower end cover of the upper door body. A lock groove for the lock tongue to extend into is provided in the upper end cover of the lower door body. When the upper door body and the lower door body are closed, the gap between the lower end cover and the upper end cover is for the lock ring seat to extend into.

3. The door lock device according to claim 1, characterized in that: A gear is provided at the driving end of the driving member, and a rack hole meshing with the gear is provided on the locking tongue.

4. The door lock device according to claim 1, characterized in that: The signal acquisition component comprises: An infrared sensor, disposed outside the box, for generating the door opening signal and outputting it to the controller when sensing an obstruction above; The door sensor is arranged inside the box body, and is used to generate the door closing signal and output it to the controller when sensing that the door body is closed.

5. The door lock device according to claim 1 or 4, characterized in that: The signal acquisition component comprises: A biometric information collection and recognition module, disposed on the door body, for generating the door opening signal according to the user's biometric information and outputting the signal to the controller; and / or, An infrared receiver is arranged on the door body, and is used for receiving the door opening signal from the mobile terminal and outputting the signal to the controller.

6. The door lock device according to claim 5, characterized in that: The biometric information collection and identification module includes any one or a combination of any two of a fingerprint collection and identification unit, a voiceprint collection and identification unit, and a face collection and identification unit.

7. A refrigerator, characterized in that It comprises a box body and a door body, wherein the door body is locked on the box body by a door locking device as described in any one of claims 1 to 6.

8. A method for controlling a door lock device, characterized in that: The door lock device is a door lock device according to any one of claims 1 to 6, and the control method of the door lock device comprises: Get the door opening signal; Controlling the door lock device to unlock according to the door opening signal; Get the door closing signal; The door lock device is controlled to lock according to the door closing signal.

9. The control method of the door lock device according to claim 8, characterized in that: The controlling the door lock device to lock according to the door closing signal comprises: Determining whether door closing signals equal to the number of door bodies are received; If so, control the door lock device to lock.

10. The control method of the door lock device according to claim 8, characterized in that: The obtaining of the door opening signal comprises: Obtaining the door opening signal generated by the infrared sensor sensing an obstruction above; or; The door opening signal generated based on a preset door opening mode is obtained, and the preset door opening mode adopts any one of a fingerprint unlocking mode, a voice unlocking mode, a face unlocking mode and an infrared remote control unlocking mode.

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