WO2022041922A1

WO2022041922A1 - Refrigerator

Info

Publication number: WO2022041922A1
Application number: PCT/CN2021/099151
Authority: WO
Inventors: 王仁华; 刘家行; 王明海
Original assignee: 海信（山东）冰箱有限公司
Priority date: 2020-08-26
Filing date: 2021-06-09
Publication date: 2022-03-03

Abstract

Provided is a refrigerator, comprising a refrigerator main body, a drawer, a state sensor and a driving assembly. The state sensor is used for obtaining the opening limit state of the drawer, and the state sensor comprises a magnetic core and a reed switch, wherein the magnetic core is telescopically mounted on the drawer, and the reed switch is mounted on the refrigerator main body; or the reed switch is telescopically mounted on the drawer, and the magnetic core is mounted on the refrigerator main body. The driving assembly comprises an electric motor and a controller, wherein the electric motor is used for driving the drawer to move towards the refrigerator main body or away from the refrigerator main body; and the controller is used for obtaining the limit state of the drawer in order to control the working of the electric motor.

Description

refrigerator

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed with the China Patent Office on August 26, 2020, the application number is 202010869868.0, and the invention name is refrigerator; submitted to the China Patent Office on August 26, 2020, the application number is 202010871058.9, the invention Priority of a Chinese patent application entitled a refrigerator; and priority of a Chinese patent application entitled a refrigerator filed on Aug. 26, 2020 with application number 202010872149.4, the entire contents of which are hereby incorporated by reference Incorporated in this application.

technical field

The present disclosure relates to the technical field of household appliances, in particular to a refrigerator.

Background technique

Refrigerator is a commonly used refrigeration equipment, and its sliding door body conforms to people's living habits, so it is pushed by the market. With the improvement of living standards, people's demand for automation of freezer drawer doors increases.

SUMMARY OF THE INVENTION

In one aspect, some embodiments of the present disclosure provide a refrigerator, comprising: a refrigerator main body; a drawer installed on the refrigerator main body so as to be able to be opened or closed; and a state sensor for acquiring the In the limit state of the drawer being opened, the state sensor includes a magnetic core and a reed switch, wherein: the magnetic core is telescopically installed on the drawer, and the reed switch is installed on the refrigerator main body; or the The reed switch is telescopically installed on the drawer, and the magnetic core is installed on the main body of the refrigerator; a driving assembly, the driving assembly includes a motor, and the motor is used to drive the drawer toward the refrigerator The main body is moved in a direction away from the main body of the refrigerator; and a controller is used to obtain the limit state of the drawer to control the motor to work.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a refrigerator according to some embodiments of the present disclosure;

FIG. 2 is a schematic view of the assembly of the drawer and the drive assembly according to some embodiments of the present disclosure;

3 is a partial structural schematic diagram of a drive assembly according to some embodiments of the present disclosure;

FIG. 4 is a schematic structural diagram of the clutch 46 according to some embodiments of the present disclosure;

FIG. 5 is an exploded view of clutch 46 according to some embodiments of the present disclosure;

6 is a schematic structural diagram of an actuator according to some embodiments of the present disclosure;

7 is a schematic diagram of the cooperation between the drawer and the refrigerator body when the drawer is in a closed state according to some embodiments of the present disclosure;

8 is a cross-sectional view of the drawer and the refrigerator body when the drawer is in a closed state according to some embodiments of the present disclosure;

9 is a schematic diagram of the cooperation between the drawer and the refrigerator main body when the drawer is in an open limit state according to some embodiments of the present disclosure;

10 is a cross-sectional view of the drawer and the refrigerator main body when the drawer is in an open limit state according to some embodiments of the present disclosure;

11 is a front view of the magnetic core retractable card mating with the guide rail when the drawer is in an open limit state according to some embodiments of the present disclosure;

12 is an axonometric view of the front view of the cooperation of the magnetic core expansion card and the guide rail when the drawer is in an open limit state according to some embodiments of the present disclosure;

FIG. 13 is an axonometric view of the back view of the magnetic core retractable card mating with the guide rail when the drawer is in an open limit state according to some embodiments of the present disclosure;

14 is a cross-sectional view of a magnetic core retractable card when the drawer is in an open limit state according to some embodiments of the present disclosure;

15 is a front view of the magnetic core retractable card mating with the guide rail when the drawer is in a closed state according to some embodiments of the present disclosure;

16 is an axonometric view of the magnetic core retractable card mating with the guide rail when the drawer is in a closed state according to some embodiments of the present disclosure;

17 is a cross-sectional view of a magnetic core retractable card when the drawer is in a closed state according to some embodiments of the present disclosure;

18 is a front view of the structure of the mounting seat and the first clip according to some embodiments of the present disclosure;

19 is an axonometric view of a front view of the structure of the mounting base and the first clip according to some embodiments of the present disclosure;

20 is an axonometric view of the rear view of the structure of the mounting seat and the first clip according to some embodiments of the present disclosure;

21 is a schematic structural diagram of a mounting seat of a refrigerator according to some embodiments of the present disclosure;

FIG. 22 is a schematic structural diagram from another perspective of a mounting seat of a refrigerator according to some embodiments of the present disclosure.

The reference numerals are explained as follows:

Refrigerator 100, refrigerator main body 1, drawer 2, drawer body 21, drawer door 211, drawer box 212, guide rail 22, status sensor 3, magnetic core 31, reed switch 32, magnetic core expansion card 33, first card bar 331, The first end 3311, the second end 3312, the guide structure 3313, the first stop plate 3314, the shock pad 3315, the first spring fixing hole 3316, the second clip 332, the first end 3321, the second end 3322, the first Two stop plates 3323, magnetic core accommodating cavity 3324, fixing structure 3325, second spring fixing hole 3326, spring 333, first end 3331, second end 3332, mounting seat 334, mounting buckle 3341, drive assembly 4, execution 40, motor 41, controller 42, second gear 43, first gear 44, rack 45,

clutches

46, 421, first friction plate; 422, second friction plate; 423, first armature; 424, first friction plate Two armatures; 425, fixing block; 425, stator; 426, rotor; 427, fixing part, 427a, clamping plate; 427b, through hole; 428, output shaft; 430, protective shell; 431, limit post; 440, Protective cover; 441, second fixing hook; 442, buckle.

detailed description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying References to devices or elements must have, be constructed, and operate in a particular orientation and are therefore not to be construed as limitations of the present disclosure.

The terms "first", "second" and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, a feature defined as "first", "second", "third" may expressly or implicitly include one or more of that feature. In the description of the present disclosure, unless stated otherwise, "plurality" means two or more.

In the description of the present disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "connected", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood in specific situations.

Further description will be given below in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural diagram of a refrigerator according to some embodiments of the present disclosure. As shown in FIG. 1 , the refrigerator 100 includes a refrigerator main body 1 , a drawer 2 , a state sensor 3 and a driving assembly 4 . The drawer 2 is installed on the refrigerator main body 1 so that it can be opened or closed; the state sensor 3 is used to obtain the limit state of the drawer 2 being opened.

FIG. 2 is a schematic view of the assembly of the drawer and the drive assembly according to some embodiments of the present disclosure. As shown in Figures 1 and 2, the drawer 2 includes a drawer body 21 and a guide rail 22, the drawer body 21 is slidably connected to the refrigerator body 1 through the guide rail 22, and the motor 41 is used to drive the drawer body 21 to slide into the refrigerator body 1 or Move in the direction of sliding out of the refrigerator body 1 . The drawer body 21 includes a drawer door 211 and a drawer box 212 . The drawer box 212 is used for storing food, so as to improve the freshness of the food. The drawer door 211 includes a door body and two guide rail brackets located on the rear side of the door body. A guide rail 22 is mounted on the guide rail bracket, and a support frame is connected between the two guide rail brackets.

Continuing to refer to FIG. 2 , the drive assembly 4 includes a motor 41 , a controller 42 , a second gear 43 , a first gear 44 , a rack 45 and a clutch 46 .

The motor 41 and the clutch 46 constitute the actuator 40, and the actuator is used to provide torque to the first gear 44, that is, to provide sliding force for the drawer 2 or the freezer door, and to control the switch of the drawer 2 or the freezer door to the automatic or manual switch state. .

The motor 41 is used to drive the drawer 2 to move toward or away from the refrigerator main body 1 . The controller 42 is used to obtain the open limit state of the drawer 2 to control the operation of the motor 41 . For example, the controller 42 controls the motor 41 to stop working when the drawer 2 to the drawer 2 is in the limit state of being opened, so as to prevent the motor 41 from driving the drawer 2 away from the refrigerator main body 1 when the drawer is in the limit state of opening. Therefore, the wear of the drawer 2 and the driving assembly 4 can be avoided and electric energy can be saved, which is beneficial to improve the service life of the refrigerator 100 . The controller 42 can also control the motor 41 to start working or stop working when acquiring the external voice control signal, so as to realize the automatic opening and closing of the drawer 2 .

2, the second gear 43 is connected to the output shaft of the motor 41 through the clutch 46, the motor 41 drives the first gear 44 through the second gear 43, the first gear 44 is used to drive the rack 45, and the rack 45 is connected with the guide rail 22 The guide rail 22 and the drawer body 21 are driven to slide toward the refrigerator main body 1 or in a direction away from the refrigerator main body 1 . The clutch 46 may specifically be an electromagnetic clutch 46 . Since the second gear 43 is connected with the output shaft of the motor 41 through the electromagnetic clutch 46 , that is to say, the electromagnetic clutch 46 can transmit or cut off the power output by the motor 41 . Therefore, when the door needs to be opened and closed manually, the electromagnetic clutch can be directly powered off to cut off the rigid connection between the motor output shaft and the second gear, thereby realizing any switching between the automatic door opening state and the conventional manual door opening and closing state. When the electromagnetic clutch 46 transmits the power output by the motor 41, the power of the motor 41 can be transmitted to the second gear 43, thereby driving the first gear 44, the rack 45, the guide rail 22, and the drawer body 21 to move, so as to drive the drawer. 2 is slid toward the refrigerator main body 1 or away from the refrigerator main body 1 to realize the opening and closing of the drawer 2 .

FIG. 3 is a partial structural schematic diagram of a drive assembly according to some embodiments of the present disclosure. In a possible embodiment, as shown in FIG. 3 , the drive assembly may further include a third gear 47 , the third gear 47 is coaxially fixed with the first gear 44 of any transmission assembly, and the third gear 47 is meshed and connected on the second gear 43 .

Through the meshing connection of the third gear 47 and the rack 321, the torque output by the driving motor 41 in the driving assembly can be converted into the sliding force of the drawer 2 or the freezer door.

FIG. 4 is a schematic structural diagram of the clutch 46 according to some embodiments of the present disclosure; FIG. 5 is an exploded view of the clutch 46 according to some embodiments of the present disclosure. In some embodiments of the present disclosure, referring to FIGS. 4 and 5 , the clutch 46 is composed of a first friction plate 421 , a second friction plate 422 , a first armature 423 , a second armature 424 , an output shaft 428 , a stator 425 and a rotor 426 composition.

The stator 425 is provided with a bearing, the shaft of the motor 41 is passed through the bearing, and then the clutch 46 is connected to the driving end of the motor 41 , and an electromagnetic coil is wound on the stator 425 .

The rotor 426 is connected to the motor shaft of the motor 41 and rotates with the motor shaft, and the rotor 426 wraps the stator 425.

In some embodiments of the present disclosure, referring to FIGS. 3 and 5 , the output shaft 428 has a circular cylindrical structure, the output end of the output shaft 428 is provided with a keyway, and the output shaft 428 is sleeved and connected to the second gear 340 .

The stability of the output shaft 428 is increased by the keyway, so as to avoid the slippage of the second gear 340 and the output shaft 428 and the like.

In some embodiments of the present disclosure, referring to FIGS. 4 and 5 , the first armature 423 has a circular sheet-like structure.

The first armature 423 is used for fixing the first friction plate 421 , and the first friction plate 421 is fixed on the output shaft 428 for transmitting the torque on the motor shaft of the motor 41 to the output shaft 428 .

The first armature 423 is fixed to the output shaft 428 , and the first armature 423 and the first friction plate 421 are matched and connected to each other.

In some embodiments of the present disclosure, referring to FIGS. 4 and 5 , the second armature 424 has a circular sheet-like structure, a central hole is formed on the second armature 424 , and the second armature 424 is matched with the second friction plate 422 . A plurality of fixing blocks 425 are arranged on the second armature 424, and the fixing blocks 425 are in the shape of an arc-shaped plate.

The rotor 426 and the second armature 424 are rigidly connected by welding or other connection forms between the fixed block 425 and the rotor 426 , so that the second armature 424 rotates with the rotor 426 , and through the connection of the fixed block 425 , the second armature 424 is connected to the second armature 424 . A gap is formed between the rotors 426 ; the second friction plate 422 is fixed on the output shaft 428 to transmit the torque on the motor shaft of the motor 41 to the output shaft 428 .

The second armature 424 is sleeved on the output shaft 428 without contact with the second armature 424 , and the second friction plate 422 has a circular sheet-like structure.

When the electromagnetic coil is energized, under the action of the magnetic force, the second friction plate 422 is tightly attached to the rotor 426, and the first friction plate 421 is attached to the second armature 424, relying on the relationship between the second friction plate 422 and the rotor 426. The friction force between the rotor 426 and the output shaft 428 is realized; and the first friction plate 421 is attached to the second armature 424 to realize the transmission of the torque on the rotor 426 or the second armature 424 to the output. on shaft 428.

When the electromagnetic coil is powered off, the second friction plate 422 and the rotor 426 are disconnected from the abutment connection, and the first friction plate 421 and the second armature 424 are disconnected from the abutment connection, so the torque on the rotor 426 will not be transmitted to the output At this time, due to the gap between the rotor 426 and the second armature 424, the second friction plate 422 can rotate without friction in the gap, that is, it is ensured that when the electromagnetic coil is powered off, the clutch 46 can cut off the motor in time 41 and the connection of the output shaft 428.

Then when the clutch 46 is powered on, the motor 41 transmits torque to the second gear 340 to drive the drawer 122 to extend and retract the freezer compartment 120; when the clutch 46 is powered off, the clutch 46 disconnects the motor 41 and the second gear 340 torque transmission, manually extending and retracting the drawer 122. The drawer 122 or the body 110 of the freezer door 121 can be opened or closed automatically and manually.

In some embodiments of the present disclosure, through the setting of the clutch 46 of the actuator, when the clutch 46 is energized, the actuator can transmit the torque of the driving motor to the second gear, so that the drawer can automatically extend and retract the freezer compartment. , when the clutch 46 is de-energized, the actuator cannot transmit the torque of the driving motor to the second gear, so as to realize the action of manually extending and retracting the freezer compartment of the drawer, so the user can switch the extension of the drawer or the freezer door at any time and retracted into the freezer for working form.

In some embodiments of the present disclosure, referring to FIG. 3 , the clutch 46 further includes a fixing member 427 . The fixing member 427 has a circular plate-like structure. The piece 427 is an integrally formed structure.

The fixing member 427 is sleeved on the stator 425 , and by connecting the clip plate 427 a to the bottom of the protective casing 430 , the clutch 46 is fixed to the protective casing 430 .

In addition, a plurality of through holes 427b are also opened on the fixing member 427. The through holes 427b are provided with a first connecting member, and the first connecting member is connected to the motor casing of the motor 41, and a clutch 46 and a protective casing are added. 430 connection stability.

FIG. 6 is a schematic structural diagram of an actuator according to some embodiments of the present disclosure. In some embodiments of the present disclosure, as shown in FIG. 6 , the actuator 40 further includes a protection component, and the protection component includes a protection shell and a protection cover 440 . The protection shell and the protection cover 440 are connected to each other in a snap fit, and the entire actuator 400 is connected to each other. The components are wrapped in the cavity formed by the protective shell and the protective cover 440.

The protective cover 440 has a semi-circular plate-like structure, and a plurality of limit posts 431 are provided on the side wall of the protective shell 430 . A connecting piece, a second fixing hook 441 and a buckle 442 are provided at the connection between the protective shell 430 and the protective cover 440 . , the connector penetrates through the protective cover 440 and is connected to the protective shell 430 .

The actuator 400 is protected by the protection component, the service life of the actuator 400 is improved, and the cost is reduced; the disassembly and assembly of the protective shell 430 is facilitated by the arrangement of the buckle 442, the second fixing hook 441 and the connecting piece. Wherein, the connector includes but is not limited to screws.

Referring to FIGS. 7 and 8 , when the drawer 2 is slid to the end toward the refrigerator main body 1 , that is, when the drawer 2 is in a closed state, the drawer 2 and the refrigerator main body 1 cooperate with each other. 9 and 10 , when the drawer 2 slides to the end in the direction away from the refrigerator main body 1 , that is, when the drawer 2 is in the limit state of opening, the drawer 2 and the refrigerator main body 1 cooperate with each other.

10 , the state sensor 3 includes a magnetic core 31 , a reed switch 32 and a magnetic core telescopic card 33 . Wherein, when the magnetic core 31 and the reed switch 32 are close to each other, the reed switch 32 can generate a signal and transmit the signal to the controller 42, so as to obtain the limit state of the drawer 2 being opened, which is beneficial for the controller 42 to realize the control of the drawer 42. 2 sliding automatic controls.

Fig. 11 is a front view of the magnetic core telescopic card mating with the guide rail when the drawer is in an open limit state. Please refer to FIG. 10 and FIG. 11 , the magnetic core retractable card 33 is a retractable structure, and the magnetic core retractable card 33 is used to retractably install the magnetic core 31 or the reed switch 32 on the guide rail 22 of the drawer 2, an embodiment of the present disclosure The magnetic core 31 is telescopically installed on the guide rail 22 of the drawer 2 as an example for description. In other embodiments of the present disclosure, the reed switch 32 can also be telescopically installed on the drawer 2, and the magnetic core 31 can be installed on the refrigerator main body 1, and only the positions of the reed switch 32 and the magnetic core 31 need to be adjusted. In exchange, other implementation principles are consistent with the embodiment in which the magnetic core 31 is telescopically installed on the guide rail 22 of the drawer 2 . The retractable structure may be a structure with springs 333, a structure with cross bars, or the like. The embodiment of the present specification will be described by taking as an example that the retractable structure has a spring 333 . The magnetic core retractable card 33 is a retractable structure, so that the magnetic core 31 installed on the magnetic core retractable card 33 can extend the magnetic core 31 when the drawer 2 is opened to the maximum, so as to effectively compensate for the limitation of the travel distance of the drawer 2 , when the drawer 2 is opened to the limit, the sensing element on the drawer 2 will be farther away from another sensing element inside the refrigerator 100, so that it can be accurately detected that the drawer 2 is opened to the limit state.

12 is an axonometric view of the front view when the drawer is in the limit state of opening according to some embodiments of the present disclosure; Axonometric view of the rear view of the core expansion card mating with the guide rail. Referring to FIG. 13 , the magnetic core telescopic card 33 includes a first clamping strip 331 , a second clamping strip 332 , a spring 333 and a mounting seat 334 . 11-13, the second clip 332 and the first clip 331 are sleeved to be movably connected. Specifically, the first clamping strip 331 may be sleeved outside the second clamping strip 332 , or the second clamping strip 332 may be sleeved outside the first clamping strip 331 . The first clip 331 includes a first end and a second end, the second clip 332 includes a first end and a second end, and the first end of the first clip 331 is opposite to the first end of the second clip 332 . The second end of a clip 331 is opposite to the second end of the second clip 332, the first clip 331 is sleeved outside the second clip 332, and the first and second ends of the second clip 332 are The first clip 331 is exposed.

Referring to FIGS. 11 and 12 , as shown in FIGS. 18 and 19 , the first clip 331 includes a guide structure 3313 , and the guide structure 3313 is used to define the moving direction of the second clip 332 . The guide structure 3313 can be a groove, and the second clip 332 can move in the groove along the direction of the groove, so that the second clip 332 can only move in a fixed direction, which is beneficial to improve the second clip The stability of the relative movement of the first clip 332 and the first clip 331 is beneficial to improve the stability of the magnetic core 31 during the entire opening and closing of the drawer 2, and is beneficial to improve the stability of the detection of the limit state of the drawer 2 being opened.

Continuing to refer to FIGS. 11 and 12 , the first clip 331 further includes a first stop plate 3314 , and the second clip 332 includes a second stop plate 3323 . The first stop plate 3314 and the second stop plate 3323 cooperate to limit the movement stroke of the second clip 332, so as to limit the maximum length of the second clip 332 protruding from the first clip 331. When the strip 331 is not subject to external force, the second clamping strip 332 can be accurately extended from the first clamping strip 331 to the maximum length. Therefore, it is convenient to design the position of the magnetic core 31 and the position of the reed switch 32 so that when the drawer 2 is opened to the limit state, the position of the magnetic core 31 just coincides with or is close to the position of the reed switch 32, which can improve the reliability of the drawer 2. Stability of detection of open limit states. The first stop plate 3314 is provided with a shock-absorbing pad 3315, and the second stop plate 3323 is made of a shock-absorbing material, which can reduce the vibration generated when the first stop plate 3314 and the second stop plate 3323 send conflicting actions. Therefore, the stability of the magnetic core 31 during the entire opening and closing process of the drawer 2 can be further improved, which is beneficial to improve the stability of detection of the limit state of the drawer 2 being opened.

Continuing to refer to FIGS. 11 and 12 , the second clip 332 further includes a magnetic core accommodating cavity 3324 and a fixing structure 3325 . The shape of the magnetic core accommodating cavity 3324 is adapted to the magnetic core 31 , and the magnetic core accommodating cavity 3324 is used for accommodating the magnetic core 31 . The fixing structure 3325 can be a raised structure such as a fixing buckle or a limit block, which is used to fix the magnetic core 31 in the magnetic core accommodating cavity 3324, so that the magnetic core 31 can be stably fixed on the magnetic core telescopic card 33, so that there is a It is beneficial to improve the stability of detecting the limit state when the drawer 2 is opened.

14 is a cross-sectional view of a magnetic core retractable card when the drawer is in an open extreme state according to some embodiments of the present disclosure. 14 , the first clip 331 further includes a first spring fixing hole 3316 , and the second clip 332 further includes a second spring fixing hole 3326 .

14, the spring 333 includes a first end and a second end. The first end of the spring 333 is fixed to the first end of the first clip 331 through the first spring fixing hole 3316 , and the second end of the spring 333 is fixed to the second end of the second clip 332 through the second spring fixing hole 3326 . The magnetic core 31 is mounted on the first end of the second clip 332 .

Continuing to refer to FIG. 14 , when the drawer 2 is in the limit state of opening, the magnetic core retractable card 33 is in a natural state without external force, and the second end of the second clip 332 is in contact with the second end of the first clip 331 . The magnetic core 31 protrudes in a direction away from the first clip 331 to protrude from the drawer 2 .

In some embodiments, the spring 333 may be in a natural state when the drawer 2 is in the extreme state of opening. In other embodiments, when the drawer 2 is in the limit state of opening, the spring 333 can also have a smaller extension, such as 1/6, 1/8, 1/10, 1/1/6 of the original length of the extension spring 333 12 in an elongated state. Since the state of the spring 333 in a natural state of no external force is prone to change, which affects the stability of the structure of the magnetic core retractable card 33, the state of the spring 333 is set to a state with a small elongation when the drawer 2 is in the limit state of opening. The extended state can improve the structural stability of the magnetic core retractable card 33, thereby improving the detection accuracy of the state sensor 3 for the limit state of the drawer 2 being opened.

15 is a front view of the magnetic core retractable card mating with the guide rails when the drawer is in a closed state according to some embodiments of the present disclosure; FIG. 16 is a shaft of the magnetic core retractable card mating with the rails when the drawer is in a closed state according to some embodiments of the present disclosure Figure 17 is a cross-sectional view of the magnetic core retractable card when the drawer is in a closed state according to some embodiments of the present disclosure. 15 , 16 and 17 , when the drawer 2 is in the closed state, please refer to FIG. 8 , since the magnetic core retractable card 33 is in contact with the back wall of the inner tank of the refrigerator main body 1 , the first end of the magnetic core retractable card 33 In a stressed state, the spring 333 is elongated, and the first end of the second clip 332 moves toward the first end of the first clip 331 to drive the magnetic core 31 to contract toward the first clip 331 to move toward the drawer 2 is retracted, wherein the first end of the magnetic core retractable clip 33 is opposite to the first end of the second clip 332 .

Referring to FIG. 14 , FIG. 15 and FIG. 16 , the mounting seat 334 and the first clip 331 can be fixedly connected or integrally formed, which can improve the stability of mounting the magnetic core 31 . The mounting seat 334 and the drawer 2 are detachably connected through the cooperation between the mounting buckle 3341 and the slot on the guide rail 22 . The detachable connection facilitates replacement of parts when they are old and helps to reduce the cost of replacement of parts.

FIG. 21 is a schematic structural diagram of a mounting seat of a refrigerator according to some embodiments of the present disclosure; FIG. 22 is a schematic structural diagram of a mounting seat of a refrigerator from another perspective according to some embodiments of the present disclosure.

21 and 22, the mounting seat 334 is provided with a sliding rail, the mounting seat 334 includes a fixing plate 41, and the sliding rail 42 is arranged on the fixing plate 41; Buckles 43, wherein one set of guide buckles 43 is arranged at the front end of the fixing plate 41 (one end close to the door body), and the other group of guide buckles 43 is arranged at the rear end of the fixing plate 41 (the end away from the door body); two The group guide buckles 43 together define the slide rail 42 . The side of the fixing plate 41 close to the guide rail bracket is provided with an installation clip 46, and the guide rail bracket is provided with a connection clip hole matched with the installation clip 46. Fixed on the guide rail bracket 14 . In addition, the front end of the mounting seat 4 (the end close to the door body) is provided with a damping pad 44 , and the damping pad 44 is arranged on the side of the guide buckle 43 away from the centerline of the slide rail 42 and is adjacent to the guide buckle 43 . The side of the fixing plate 41 close to the guide rail bracket 14 is provided with a groove 45 for accommodating the spring 70, wherein the position of the groove 45 is consistent with the direction of the slide rail 42; the rear end of the groove 45 (away from the door body) One end) is provided with a first fixing hole 45a for fixing one end of the connecting spring 70 . The front end of the groove 45 (the end close to the door body) is provided with a through hole for the spring 70 to pass through.

To sum up, the refrigerator 100 of the embodiment of the present disclosure is provided with the state sensor 3, and one of the sensing elements of the state sensor 3 is telescopically installed on the drawer 2, so as to overcome the separation of the sensing element on the drawer 2 when the drawer 2 is opened to the limit state. Another sensing element inside the refrigerator 100 has the technical difficulty of a long distance, so as to detect the limit state of the drawer 2 being opened, so that the controller 42 can obtain the limit state of the drawer 2 to control the motor 41 to work. It is beneficial to realize the automatic opening and closing of the drawer 2 of the refrigerator 100 .

It should be understood that various parts of the embodiments of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or a combination of the following techniques known in the art: Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present disclosure should be covered. within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A refrigerator, characterized in that, comprising:

refrigerator body;

a drawer, which can be opened or closed on the refrigerator body;

a state sensor, the state sensor is used to obtain the limit state of the drawer opening, the state sensor includes a magnetic core and a reed switch, wherein:

The magnetic core is telescopically mounted on the drawer, and the reed switch is mounted on the refrigerator main body; or

The reed switch is telescopically mounted on the drawer, and the magnetic core is mounted on the refrigerator main body;

A drive assembly, the drive assembly includes:

a motor for driving the drawer to move toward the refrigerator body or away from the refrigerator body; and

and a controller, which is used for acquiring the limit state of the drawer to control the motor to work.
The refrigerator according to claim 1, wherein the state sensor further comprises a magnetic core extension card, the magnetic core extension card is a retractable structure, and the magnetic core extension card is used for connecting the magnetic core or all The reed switch is telescopically installed on the drawer.
The refrigerator according to claim 2, wherein the magnetic core expansion card comprises:

the first card;

a second clip, the second clip and the first clip are sleeved to be movably connected; and

A spring, the first end of the spring is fixed on the first clip, and the second end of the spring is fixed on the second clip.
The refrigerator according to claim 3, wherein the first clamping strip includes a first end and a second end, the second clamping strip includes a first end and a second end, and the first clamping strip has a first end and a second end. The first end is opposite to the first end of the second clip, the second end of the first clip is opposite to the second end of the second clip, and the first clip is sleeved on the Outside the second clamping strip, the first and second ends of the second clamping strip are both exposed from the first clamping strip, and the first end of the spring is fixed on the first end of the first clamping strip , the second end of the spring is fixed on the second end of the second clip, and the magnetic core is installed on the first end of the second clip;

When the magnetic core retractable card is in a natural state without external force, the second end of the second clip is abutted against the second end of the first clip, and the magnetic core faces away from the first clip to project in the direction of the drawer;

When the first end of the magnetic core retractable card is in a stressed state, the spring is elongated, and the first end of the second clip moves toward the first end of the first clip to drive the The magnetic core is retracted toward the first clamping bar to retract toward the drawer, wherein the first end of the magnetic core retractable card is opposite to the first end of the second clamping bar.
The refrigerator according to claim 3, wherein the first clamping strip includes a guide structure, and the guiding structure is used to define the moving direction of the second clamping strip; the first clamping strip further comprises a first clamping strip. A stop plate, the second clamping strip includes a second stop plate, and the first stop plate and the second stop plate cooperate to define the movement stroke of the second clamping strip.
The refrigerator according to claim 5, wherein a shock-absorbing pad is provided on the first stop plate, and the second stop plate is made of a shock-absorbing material.
The refrigerator according to claim 3, wherein the magnetic core retractable card comprises a mounting seat, the mounting seat is fixedly connected with the first clip or integrally formed, and the mounting seat and the drawer are detachable ground connection.
The refrigerator according to claim 3, wherein the second clip further comprises a magnetic core accommodating cavity and a fixing structure, the magnetic core accommodating cavity is used to accommodate the magnetic core, and the fixing structure is used to The magnetic core is fixed in the magnetic core accommodating cavity.
The refrigerator according to any one of claims 1-8, wherein the drawer comprises a drawer body and a guide rail, the drawer body is slidably connected to the refrigerator main body through the guide rail, and the motor is used for The drawer body is driven to move in the direction of sliding into the refrigerator body or sliding out of the refrigerator body.
The refrigerator according to claim 9, wherein the drive assembly further comprises a second gear, a first gear, a rack and a clutch, the second gear is connected with the output shaft of the motor through the clutch, The motor drives the first gear through the second gear, the first gear is used to drive the rack, and the rack is connected with the guide rail to drive the guide rail and the drawer body to face The refrigerator body slides in a direction away from the refrigerator body.