CN210512282U

CN210512282U - A kind of refrigerator

Info

Publication number: CN210512282U
Application number: CN201920929213.0U
Authority: CN
Inventors: 申乃雨; 李利云; 王仁华; 陈红欣; 郭子豪
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-05-12
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a refrigerator relates to refrigeration plant technical field, prevents in the motion process of drawer door subassembly and produces the collision with the barrier on the route to avoid personnel be injured, article are impaired or refrigerator drawer door subassembly damages because of the collision. The refrigerator comprises a driving device, a sliding rail and a sliding rail, wherein the driving device is used for driving the storage part to slide along the sliding rail so as to open or close the drawer door component; the barrier sensor is used for detecting whether a barrier exists within a preset distance in the movement direction of the drawer door assembly; the controller is electrically connected with the driving device, and the barrier sensor is electrically connected with the controller; when the obstacle sensor detects that an obstacle exists within a preset distance in the moving direction of the drawer door assembly, the controller controls the driving device to stop; the controller controls the driving device to be activated when the obstacle sensor detects that there is no obstacle within a preset distance in the moving direction of the drawer door assembly. The utility model is used for store article.

Description

A kind of refrigerator

Technical Field

The utility model relates to a refrigeration plant technical field especially relates to a refrigerator.

Background

A refrigerator is a refrigerating apparatus for maintaining a constant low temperature, and is also a civil product for maintaining food or other articles at a constant low temperature. Generally, a refrigerator has doors for opening or closing the inside of a body, which are divided into a swing door and a drawer door, and particularly, the drawer door is integrally provided with a storage box, and a user accesses an article by opening the drawer door with the storage box. However, when the stored articles are heavy and heavy, manual opening of the drawer door often requires a large force due to the self-suction force of the drawer door.

Therefore, in order to realize automatic door opening and closing in the whole process, the prior art provides a refrigerator with an automatic door opening and closing function and a control method. As shown in fig. 1, a refrigerator in the prior art includes an input module 01, a driving module 02, a drawer distance sensor, a controller and a current sensor, wherein the input module 01, the driving module 02, the drawer distance sensor and the current sensor are electrically connected to the controller, and the current sensor is further electrically connected to the driving module 02. At this time, the user inputs an operation instruction through the input module 01, the controller controls the driving module 02 to start according to the operation instruction, so that the refrigerator drawer 03 is opened or closed, and when the controller receives the operation instruction sent by the drawer distance sensor that the refrigerator drawer 03 reaches the fully-opened position or the fully-closed position, the controller controls the driving module 02 to stop, so that the refrigerator drawer 03 stops moving. In addition, when the refrigerator drawer 03 collides with an obstacle in the movement process, the obstacle blocks the output current of the driving module 02 to change, the current sensor receives the information that the output current of the driving module 02 changes and feeds the information that the current changes back to the controller, and the controller controls the driving module 02 to stop so that the refrigerator drawer 03 stops moving.

However, when people or articles are in a preset distance in the moving direction of the automatic switch of the refrigerator drawer, the refrigerator drawer can stop moving after colliding with the people or the articles, and people or articles can be injured, or the door assembly of the refrigerator drawer is damaged due to collision; meanwhile, when the quality of the articles in the preset distance in the moving direction of the automatic switch of the refrigerator drawer is small, after the refrigerator drawer collides with the articles, the output current of the driving module is not obviously changed, and the refrigerator drawer can still continue to move, so that the articles are damaged.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a refrigerator prevents to produce the collision with the barrier on the route in the motion process of drawer door subassembly to avoid personnel to be injured, article are impaired or refrigerator drawer door subassembly damages because of the collision.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

a refrigerator comprises a storage box body and a drawer door assembly which is connected to the storage box body in a sliding mode, wherein the drawer door assembly comprises a drawer door plate and a storage part fixedly connected with the drawer door plate; the storage part is connected with the storage box body through a sliding rail; the refrigerator further includes: the driving device is in driving connection with the storage part and is used for driving the storage part to slide along the sliding rail so as to open or close the drawer door assembly; an obstacle sensor for detecting whether an obstacle exists within a preset distance in a movement direction of the drawer door assembly; the controller is electrically connected with the driving device, and the obstacle sensor is electrically connected with the controller; when the obstacle sensor detects that an obstacle exists within a preset distance in the movement direction of the drawer door assembly, the controller controls the driving device to stop; when the obstacle sensor detects that no obstacle exists within a preset distance in the moving direction of the drawer door assembly, the controller controls the driving device to start.

The refrigerator provided by the embodiment of the utility model comprises a driving device, a barrier sensor and a controller, wherein the driving device and the barrier sensor are electrically connected with the controller; the barrier sensor is used for detecting whether a barrier exists within a preset distance in the moving direction of the drawer door assembly and transmitting detection information to the controller or extracting the detection information from the barrier sensor by the controller; the controller is used for receiving user operation instruction information and collision information and controlling the operation mode of the driving device according to different information combinations, so that the drawer door assembly can perform opening or closing movement relative to the storage box body. Compared with the prior art, when there is the barrier in the predetermined distance in the direction of motion of drawer door subassembly, there is the barrier in the predetermined distance in the direction of motion that the barrier inductor detected drawer door subassembly to with the above-mentioned detection information transfer that has the barrier for the controller or draw from the barrier inductor in, at this moment, controller control drive arrangement stop motion, prevent that drawer door subassembly and barrier from colliding, thereby avoid personnel's injury, article are impaired or refrigerator drawer door subassembly damages because of the collision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a refrigerator having an automatic opening and closing drawer according to the related art;

fig. 2 is a schematic view of the overall structure of the refrigerator according to the embodiment of the present invention;

fig. 3 is a plan view of a drawer door assembly with a radar device of a refrigerator according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the inside of the storage box body of the refrigerator according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a drawer door assembly including a driving device of a refrigerator according to an embodiment of the present invention;

fig. 6 is a schematic partial structure diagram of a driving device of a refrigerator according to an embodiment of the present invention;

fig. 7 is a side view of a refrigerator according to an embodiment of the present invention, in which a sliding rail including a driving device is connected to a freezing panel;

fig. 8 is a schematic structural view of a refrigerator according to an embodiment of the present invention, in which a sliding rail including a driving device is connected to a freezing panel;

fig. 9 is a flowchart illustrating steps of a control process of the refrigerator according to the embodiment of the present invention;

fig. 10 is a second flowchart illustrating the steps of the control process of the refrigerator according to the embodiment of the present invention;

fig. 11 is a third step flowchart of a control process of the refrigerator according to the embodiment of the present invention in use;

fig. 12 is a fourth flowchart illustrating a procedure of a control process of the refrigerator according to the embodiment of the present invention.

Reference numerals:

01-an input module; 02-a drive module; 03-refrigerator drawer; 1-storing the box body; 11-a mounting location; 2-a drawer door assembly; 21-drawer door panel; 22-a storage section; 3-a slide rail; 31-a sheet metal guide rail; 311-restriction site; 32-maximum travel bar; 33-linear guide rail; 34-linear guide rail housing; 35-guide rail fixing seats; 4-a drive device; 41-a motor; 42-a rack and pinion mechanism; 421-gear; 4211-a drive gear; 4212-meshing gear; 422-rack; 43-drive member base; 44-a gearbox; 45-clutch; 5-obstacle sensors; 51-a radar device; 6-a controller; 7-an instruction input unit; 71-sliding keys; 72-a voice input module; 73-display screen; 8-a refrigeration door body; 9-push-pull position sensor; 91-an inductive flip-flop; 92-open state sensing point; 93-off state sensing point.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

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

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

A refrigerator, as shown in fig. 2 and 3, comprising a storage box body 1 and a drawer door assembly 2 slidably connected to the storage box body 1, wherein the drawer door assembly 2 comprises a drawer door panel 21 and a storage part 22 fixedly connected with the drawer door panel; the storage part 22 is connected with the storage box body 1 through a slide rail 3; the refrigerator further includes: the driving device 4 is in driving connection with the storage part 22 and is used for driving the storage part 22 to slide along the sliding rail 3 so as to open or close the drawer door assembly 2; the obstacle sensor 5 is used for detecting whether an obstacle exists within a preset distance in the movement direction of the drawer door assembly 2; the controller 6 is electrically connected with the driving device 4, and the obstacle sensor 5 is electrically connected with the controller 6; when the obstacle sensor 5 detects that an obstacle exists within a preset distance in the movement direction of the drawer door assembly 2, the controller 6 controls the driving device 4 to stop; when the obstacle sensor 5 detects that there is no obstacle within a preset distance in the moving direction of the drawer door assembly 2, the controller 6 controls the driving device 4 to be activated.

The refrigerator of the embodiment of the present invention, as shown in fig. 2 and fig. 3, includes a driving device 4, a barrier sensor 5 and a controller 6, the driving device 4 and the barrier sensor 5 are electrically connected to the controller 6, the driving device 4 can make the drawer door assembly 2 perform opening or closing movement relative to the storage box 1 through different operation modes; the obstacle sensor 5 is used for detecting whether an obstacle exists within a preset distance in the movement direction of the drawer door assembly 2, and transmitting the detection information to the controller 6 or extracting the detection information from the obstacle sensor 5 by the controller 6; the controller 6 is configured to receive user operation command information and collision information and control the operation of the driving device 4 according to different combinations of information, so as to allow the drawer door assembly 2 to perform an opening or closing motion with respect to the storage compartment 1. Compared with the prior art, when there is the barrier in the predetermined distance in the direction of motion of drawer door subassembly 2, barrier inductor 5 detects that there is the barrier in the predetermined distance in the direction of motion of drawer door subassembly 2 to with the above-mentioned detection information transfer that has the barrier for controller 6 or by controller 6 draws from barrier inductor 5 in, at this moment, controller 6 control drive arrangement 4 stop motion, prevent that drawer door subassembly 2 from colliding with the barrier, thereby avoid personnel's injury, article are impaired or refrigerator drawer door subassembly 2 damages because of the collision.

It should be noted that, in the process from the obstacle sensor 5 sensing that an obstacle exists within the preset distance in the moving direction to the controller 6 receiving the detection information that an obstacle exists and controlling the driving device 4 to stop, the drawer door assembly 2 still moves, so to avoid the drawer door assembly 2 colliding with an obstacle in the process, the preset distance should be greater than or equal to the distance that the drawer door assembly 2 moves in the process, and generally, the preset distance is 5cm to 30cm according to the moving speed of the drawer door assembly 2 and the time of the process.

It can be understood that the above-mentioned action of automatic opening or closing of the drawer door assembly 2 is determined by the user's requirement, and therefore, as shown in fig. 2 and 3, the refrigerator of the embodiment of the present invention further includes an instruction input unit 7, the instruction input unit 7 is electrically coupled to the controller 6 for receiving the user's input of an operation instruction to the controller 6, the operation instruction at least includes an instruction for controlling the drawer door assembly 2 to open automatically and an instruction for controlling the drawer door assembly 2 to close automatically. The instruction input unit 7 may be one or more of a touch sensing input, a voice input, a vibration input, and a character code graphic input according to input information different from the user. Generally, the refrigerator at least comprises a refrigerating chamber and a freezing chamber, the instruction input unit can be arranged on the refrigerating door body 8 or on the drawer door panel 21, when the instruction input unit 7 is arranged on the drawer door panel 21, a user needs to bend down or crouch down to send an operation instruction, and the use is inconvenient, so that the instruction input unit 7 is arranged on the refrigerating door body 8, as shown in fig. 2, and the instruction input unit 7 is usually positioned right ahead when the user stands, so that the user can conveniently operate. In addition, in order to ensure the convenience and reliability of the function use, the refrigerator of the embodiment of the utility model adopts two input combinations of sound input and touch induction input, the touch induction input is specifically a sliding key 71, the sliding key 71 is arranged at the lower part of the freezing door body 8, and the manual touch operation of a user is convenient; the voice input is a voice input module 72, and the voice input module 72 is arranged at the upper part of the freezing door body 8, is usually at the same height with the head of an adult user, and is convenient for receiving the voice input of the user. At this time, taking the sliding button 71 control as an example, the user operates the sliding button 71 to send information for opening the drawer door assembly 2 to the controller 6, and the controller 6 determines whether the drawer door assembly 2 performs an automatic opening operation according to the detection information of the obstacle sensor 5; the user operates the slide button 71 to send information for closing the drawer door assembly 2 to the controller 6, and the controller 6 determines whether the drawer door assembly 2 is automatically opened or not according to the detection information of the obstacle sensor 5.

When the obstacle sensor 5 detects that an obstacle exists in the preset distance in the moving direction of the drawer door assembly 2, the controller 6 controls the driving device 4 to stop moving to prevent the refrigerator drawer door assembly 2 from colliding with the obstacle, and at this time, in order to remind a user that the obstacle exists in the preset distance in the moving direction of the drawer door assembly 2 and the drawer door assembly 2 of the refrigerator stops moving, referring to fig. 2 and 3, the refrigerator of the embodiment of the present invention further comprises an alarm unit electrically connected with the obstacle sensor 5 or electrically connected with the controller 6, in this case, when the obstacle sensor 5 detects that the obstacle exists in the preset distance in the moving direction of the drawer door assembly 2, the controller 6 controls the driving device 4 to stop, the alarm unit gives an alarm, and at this time, the user learns that the obstacle exists in the preset distance in the moving direction of the drawer door assembly 2 according to the alarm information, the drawer door assembly 2 is opened after the obstacle needs to be cleared. The mode of warning the user can be displayed by sound or by graphics, for example, the warning unit displays one or two of warning and sound warning for a character code graphic. Only the alarm is displayed through the character code graph, although the alarm is intuitive and convenient for a user to understand, when the user inputs an opening operation instruction to leave the refrigerator, the alarm prompt cannot timely remind the user that an obstacle exists on a drawer path, so that the drawer door assembly is still not opened after the user returns, the time waste is caused, and the user experience is not high; only through audible alarm, although can in time remind the user that there is the barrier on the drawer route, nevertheless it is directly perceived obvious inadequately, therefore, generally speaking, alarm unit adopts the mode of both combinations. In particular, an alarm unit may be integrated in the command input unit 7, for example: the instruction input unit 7 is provided with a display screen 73, information that an obstacle exists in a preset distance in the moving direction of the drawer door assembly 2 can be fed back to the display screen 73, the display screen 73 prompts a user that the obstacle exists in the preset distance in the moving direction of the drawer door assembly 2 in a voice, animation or text mode, and the door is opened automatically after the obstacle needs to be removed.

When the drawer door assembly 2 is stopped at a position between the full open and the full close, after the user removes an obstacle within a preset distance in the movement direction of the drawer door assembly 2, in order to allow the drawer door assembly 2 to continue to finish without completing the movement, a memory unit is provided for recording and storing information of the movement direction. Specifically, the utility model discloses controller 6 of refrigerator includes the memory cell, the memory cell is used for taking notes drawer door subassembly 2's direction of motion, after controller 6 stops at the in-process control drive arrangement 4 of drawer door subassembly 2 motion, and when restarting drive arrangement 4, controller 6 can be according to the direction of motion of memory cell record drawer door subassembly 2, control drive arrangement 4 and open and make drawer door subassembly 2 continue along the direction of motion before stopping, open or the action of closing with the required drawer door subassembly 2 of the operating command of correct completion user input. Wherein the memory unit in the controller 6 determines whether the opening or closing action is being performed before the stop by software recording the manner in which the front drive 4 is operating before the drawer door assembly 2 is stopped partway through. In this case, when the drawer door assembly 2 is stopped at a position between the fully opened position and the fully closed position, the user removes an obstacle within a preset distance in the moving direction of the drawer door assembly 2, the obstacle sensor 5 detects that no obstacle is present within the preset distance in the moving direction of the drawer door assembly 2, and transmits the detection information that no obstacle is present within the preset distance in the moving direction of the drawer door assembly 2 to the controller 6 or is extracted from the obstacle sensor 5 by the controller 6, and at this time, the controller 6 controls the driving device 4 to be activated according to the last moving direction or trajectory of the drawer door assembly 2 recorded in the memory unit, so that the drawer door assembly 2 continues to complete the movement before the stop, thereby completing the opening or closing motion of the drawer door assembly 2 required by the operation instruction input by the user.

Since the obstacle sensor 5 is used to detect whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly 2, the obstacle sensor 5 is disposed on the drawer door panel 2, so that an effective detection area of the obstacle sensor 5 is a range of movement of the drawer door assembly 2. The obstacle sensor 5 may be disposed on the upper portion of the drawer door 21, or may be disposed on the lower portion of the drawer door 21, and generally, the obstacle sensor 5 is disposed on the lower portion of the drawer door 21, so that the overall beauty of the drawer door 21 is not affected. In some embodiments, the obstacle sensor 5 is an infrared sensor, a microwave sensor, or a radar device 51. In view of the better obstacle detection effect of the radar device 51 and the lower cost, the refrigerator of the embodiment of the present invention employs the radar device 51 as the obstacle sensor 5, specifically, as shown in fig. 3, three radar devices 51 are uniformly distributed on the lower portion of the drawer door panel 21, the three radar devices 51 are all electrically connected to the controller 6 to transmit the detection information to the controller 6 or extract the detection information from the radar devices 51 by the controller 6, each radar device 51 corresponds to an obstacle detection area, the detection area of the detection area is within the above-mentioned preset distance, when an obstacle exists in the obstacle detection area, the radar device 51 transmits the information of the obstacle existing in the preset distance in the moving direction of the drawer door assembly 2 to the controller 6 or extracts the information from the radar device 51 by the controller 6, the controller 6 controls the driving device 4 to stop, and meanwhile, the alarm unit sends alarm information.

When the obstacle sensor 5 detects that no obstacle exists within a preset distance in the moving direction of the drawer door assembly 2, the controller 6 controls the driving device 4 to start, when the drawer door assembly 2 moves to a fully opened position or a fully closed position, the controller 6 needs to control the driving device 4 to stop, in order to acquire the position information of the drawer door assembly 2, therefore, referring to fig. 4 and 5, the refrigerator of the embodiment of the present invention further includes a push-pull position sensor 9, the push-pull position sensor 9 is electrically connected with the controller 6 for detecting the position information of the drawer door assembly 2, wherein the position information at least includes the opening position information when the drawer door assembly 2 is fully opened and the closing position information when the drawer door assembly is fully closed; when the position information detected by the push-pull position sensor 9 is the open position information or the closed position information, the controller controls the driving device 4 to stop. When a user inputs an operation instruction, the operation instruction information is transmitted to the controller 6 through the instruction input unit 7 or the controller 6 extracts the operation instruction information from the instruction input unit 7, the position information of the drawer door assembly 2 is transmitted to the controller 6 through the push-pull position sensor 9 or the controller 6 extracts the position information from the push-pull position sensor 9, the obstacle sensor 5 detects that no obstacle exists within a preset distance in the moving direction of the drawer door assembly 2, if the position information is opening position information when the drawer door assembly is completely opened, the controller 6 controls the driving device 4 to start, so that the drawer door assembly 2 moves towards the inside of the storage box body 1 until the controller 6 receives the complete closing information, and controls the driving device 4 to stop; if the position information is the closing position information when the drawer is completely closed, the controller 6 controls the driving device 4 to be started, so that the drawer door assembly 2 moves towards the outside of the storage box body 1, and the driving device 4 is controlled to stop until the controller 6 receives the complete opening information. When the obstacle sensor 5 detects that there is no obstacle within a preset distance in the moving direction of the drawer door assembly 2, and the controller 6 does not receive the opening position information when the drawer door assembly 2 is fully opened or the closing position information when the drawer door assembly 2 is fully closed, the controller 6 determines the moving direction of the drawer door assembly 2 with respect to the storage box 1 according to the above-mentioned memory unit, and then controls the driving device 4 to start, so that the drawer door assembly 2 continues to complete the movement before stopping until the controller 6 receives the position information.

According to the above-mentioned push-pull position sensor 9, as shown in fig. 4 and 5, the push-pull position sensor 9 includes a sensing trigger 91 disposed on the drawer door assembly, and an open state sensing point 92 and a closed state sensing point 93 respectively disposed on the storage box body, the sensing trigger 91 is disposed at the rear of the drawer door assembly toward the open position, the open state sensing point 92 is disposed at the front of the storage box body 1 toward the open position, the closed state sensing point 93 is disposed at the rear of the storage box body 1 toward the open position, and the position information includes the open position information when the drawer door assembly 2 is fully opened and the closed position information when the drawer door assembly 2 is fully closed. In this case, when the user inputs an operation command and the obstacle sensor 5 detects that no obstacle exists within a preset distance in the moving direction of the drawer door assembly 2, if the controller 6 receives the sensing information of the open state sensing point 92, the controller 6 controls the driving device 4 to start, so that the drawer door assembly 2 moves toward the inside of the storage box 1, until the sensing information of the closed state sensing point 93 is received, the controller 6 controls the driving device 4 to close; if the controller 6 receives the sensing information of the closed state sensing point 93, the controller 6 controls the driving device 4 to be started, so that the drawer door assembly 2 moves towards the outside of the storage box body 1, until the sensing information of the open state sensing point 92 is received, the controller 6 controls the driving device 4 to be closed.

It should be noted that the inductive trigger can be disposed on the storage box body and located on the storage box body in front of the opening position, the opening state inductive point is disposed on the drawer door assembly and located behind the opening position, the closing state inductive point is disposed on the drawer door assembly and located in front of the opening position, and the specific inductive implementation manner is similar to that described above. In addition, in some embodiments, a microwave sensor may be used to sense the relative distance between the drawer and the storage compartment, and determine whether the drawer door assembly is in a fully open or fully closed position based on the distance between the two extreme positions.

Drive arrangement drive drawer door subassembly has multiple mode for the storage box motion, because rack and pinion mechanism's bearing capacity is big, and transmission precision is higher, and better transmission effect still can be guaranteed to storing portion when heavier, has better stability, consequently the utility model discloses a drive arrangement adopts rack and pinion mechanism. Referring to fig. 5 and 6, the driving device 4 includes a motor 41 and a rack and pinion mechanism 42, the rack and pinion mechanism 42 at least includes a gear 421 and a rack 422 engaged with the gear, the gear 421 is fixedly connected to an output shaft of the motor 41; the motor 41 is fixed to the storage compartment 1 and the rack 422 is fixed to the drawer door assembly 2, or the motor 41 is fixed to the drawer door assembly 2 and the rack 422 is fixed to the storage compartment 1. When the motor 41 rotates forward, the drawer door assembly 2 moves out of the storage box 1 through the cooperation of the gear 421 and the rack 422; when the motor 41 is reversely rotated, the drawer door assembly 2 is moved toward the inside of the storage compartment 1 by the engagement of the gear 421 with the rack 422. In addition, in order to prevent the unbalanced opening or closing motion of the drawer door assembly 2 during the opening and closing processes, the gear 421 includes a driving gear 4211 and a meshing gear 4212, wherein two meshing gears 4212 are respectively disposed at both sides of the drawer door assembly 2 and are connected by a link 423. Likewise, two racks 422 are correspondingly provided, and are respectively engaged with the two engagement gears 4212. When the pinion gear 4211 rotates, the meshing gear 4212 meshed with the pinion gear 4211 makes the meshing gear 4212 at the other side of the drawer door assembly 2 rotate on the corresponding rack 422 through the connecting rod 423, so that the left and right sides of the drawer door assembly 2 move towards the outside of the storage box body 1 or towards the inside of the storage box body 1 at the same time, and unbalanced opening or closing motion of the drawer door assembly 2 in the opening and closing processes is prevented.

In some embodiments, the motor 41 is fixed on the drawer door assembly 2, and the rack 422 is fixed with the storage box 1, so that the structure of the refrigerator drawer without the driving device 4 in the prior art is changed little, the design is simple, and the stability is good. Specifically, as shown in fig. 7 and 8, the slide rail 3 includes a sheet metal guide 31, a maximum stroke rod 32, a linear guide 33, a linear guide shell 34 and a guide fixing seat 35, the two sheet metal guide 31 are respectively and fixedly connected to two sides of the drawer door 21, a side of the sheet metal guide 31 facing the inside of the storage box 1 is fixedly connected to the storage part 22, a side of the sheet metal guide 31 facing the outside of the storage box 1 is fixedly connected to the maximum stroke rod 32 through two limit points 311, the maximum stroke rod 31 can be inserted into the linear guide 33 in a matching manner and can slide along the linear guide 33, at this time, when the maximum stroke rod 32 slides out to the maximum stroke along the linear guide 33, the length of the maximum stroke rod 32 inserted into the linear guide 33 is too short, the linear guide 33 has a poor sliding guiding effect on the maximum stroke rod 32, and therefore, the linear guide 33 is slidably connected to the linear guide shell 34, the linear guide housing 34 is fixedly connected with the guide fixing seat 35, and the guide fixing seat 35 is fixedly connected to the storage box 1 through the mounting position 11, in which case the linear guide 33 can slide along the linear guide housing 34 to extend out of the storage box 1 by a certain length so as to slidably guide the maximum stroke rod 32 extending out of the storage box 1. The aforesaid is slide rail 3 structure that does not include drive arrangement among the prior art, based on this, the utility model discloses the refrigerator is at above-mentioned maximum stroke pole 32 towards the inside side fixedly connected with drive unit base 43 of storage box 1, motor 41 is fixed on drive unit base 43, and the rotatory fixedly connected with driving gear 4211 of output of motor 41, driving gear 4211 and meshing gear 4212 mesh, the one end of meshing gear 4212 and maximum stroke pole 32 towards the rotatory fixed connection in the inside side of storage box 1, the other end of meshing gear 4212 is connected with connecting rod 423, be equipped with on the guide rail fixing base 35 with meshing gear 4212 complex rack 422, meshing gear 4212 and the rack toothing of guide rail fixing base 35. In this case, the driving device 4 is fixedly connected to and moves together with the drawer door assembly 2, and when the controller 6 controls the motor 1 to be activated, the pinion gear 4211 transmits a rotational torque to the engaging gear 4212, and the engaging gear 4212 moves toward the outside of the storage compartment 1 or toward the inside of the storage compartment 1 with respect to the rack 422, thereby driving the storage part 22 to slide along the slide rail 3 to open or close the drawer door assembly 2. It can be understood that the above-mentioned driving device 4 has less structural change to the existing refrigerator drawer and has lower cost.

It should be noted that, as shown in fig. 6, a gear box 44 is further provided between the motor 41 and the driving gear 4211, an output end of the gear box 44 is connected to the driving gear 4211, and the gear box 44 is mainly used for reducing the rotation speed of the motor 41 and increasing the torque so that the drawer door assembly 2 moves toward the inside of the storage compartment 1 or toward the outside of the storage compartment 1 at a certain speed. Wherein, motor 41 can choose for use brushless motor, have brush motor or step-by-step servo motor, has the characteristics that the performance is more stable, control circuit is simple and the cost is lower in view of having brush motor, the utility model discloses a refrigerator has adopted brush motor, simple structure, and with low costs.

When the power is unexpectedly cut off, the driving device 4 is unexpectedly cut off and cannot be started, the self-locking resistance of the motor 41 can cause the drawer door assembly 2 not to move relative to the storage box body 1, in order to not influence the opening and closing of the drawer door assembly 2 by a user, as shown in fig. 5 and 6, a clutch 45 is further arranged between the motor 41 and the gear rack mechanism 42, the clutch 45 is electrically connected with the controller 6, and the controller 6 can control the attraction and the separation of the clutch 45; or, the clutch 45 is positioned between two meshed gears in the gear box 44, the clutch 45 is electrically connected with the controller 6, and the controller 6 can control the engagement and disengagement of the clutch 45. The controller 6 controls the clutch 45 to be engaged and disengaged by controlling the power on or off of the clutch 45, and specifically, when the controller 6 controls the clutch 45 to be energized, the clutch 45 is in an engaged state; when the controller 6 controls the clutch 45 to be deenergized, the clutch 45 is in a disengaged state. In this case, the controller 6 controls the driving device 4 to start, specifically, the controller 6 controls the motor 41 to start and controls the clutch 45 to suck; the controller 6 controls the driving device 4 to stop, specifically, the controller 6 controls the motor 41 to stop and controls the clutch 45 to disengage. In this way, after the controller 6 controls the driving device 4 to stop, since the clutch 45 is in the disengaged state, the resistance of the self-locking of the motor 41 does not affect the rotation of the gear 451, and thus, the user can open or close the drawer door assembly 2 by manual operation at this time. In addition, when the power is cut off accidentally, the clutch 45 is cut off and is in a disengaged state, the rotation of the gear 41 cannot be influenced by the self-locking resistance of the motor 41, and a user can open or close the drawer door assembly 2 through manual operation, so that the condition that the user cannot access food when the power is cut off accidentally is avoided.

It should be noted that, the storage box body is further provided with an emergency switch, all the movements described above can be stopped by the emergency switch arranged on the storage box body, the operation of the motor and the driving device is stopped by one key emergency brake, the clutch is powered off, and at the moment, the opening or closing operation of the drawer door assembly can be manually performed, so that the safety of the refrigerator provided by the embodiment of the utility model is further improved.

The utility model discloses control process of refrigerator when using includes: judging whether an obstacle exists within a preset distance in the movement direction of the drawer door assembly or not in the movement process of the drawer door assembly; when the obstacle is detected to be in the preset distance in the moving direction of the drawer door assembly, the driving device is controlled to stop, and when the obstacle is detected to be not in the preset distance in the moving direction of the drawer door assembly, the driving device is controlled to start.

Specifically, referring to fig. 9, the method includes the following steps:

step S4: judging whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly; the controller judges whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly according to the detection information of the obstacle sensor.

Step S5: if yes, the driving device is controlled to stop, and step S2 is executed; at the moment, the detection information indicates that an obstacle exists in the preset distance in the movement direction of the drawer door assembly, and the controller controls the driving device to stop according to the detection information that the obstacle exists in the preset distance in the movement direction of the drawer door assembly, so that collision with the obstacle in the preset distance in the movement direction of the drawer door assembly is avoided; in addition, the controller controls the driving device to be activated when the detected information is converted into the absence of an obstacle within a preset distance in the moving direction of the drawer door assembly. If not, go to step S4; at this time, the detection information indicates that no obstacle exists within a preset distance in the moving direction of the drawer door assembly.

In the using process of the refrigerator, when the drawer door assembly detects that an obstacle exists in the preset distance in the moving direction of the drawer door assembly in the opening or closing moving process, the driving device is controlled to stop, so that the drawer door assembly stops moving, and the drawer door assembly is prevented from colliding with the obstacle; at the moment, whether an obstacle exists in the preset distance in the moving direction of the drawer door assembly is continuously judged, and the driving device is controlled to be started until the obstacle does not exist in the preset distance in the moving direction of the drawer door assembly, so that the automatic opening or automatic closing action of the drawer door assembly is completed.

When the utility model discloses when the refrigerator still includes instruction input unit, the control process of this refrigerator when using still includes: after receiving an input instruction of the instruction input unit, judging whether an obstacle exists within a preset distance in the movement direction of the drawer door assembly; when the obstacle sensor detects that no obstacle exists within a preset distance in the moving direction of the drawer door assembly, the driving device is controlled to be started.

Specifically, referring to fig. 9, the method further includes the following steps:

step S1: receiving an input operation instruction; the input instruction is input by a user through the instruction input unit, the input instruction is received by the controller, and the input instruction can be an opening input instruction of the drawer door assembly and can also be a closing input instruction of the drawer door assembly and is determined by the requirement of the user.

Step S2: judging whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly; the controller judges whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly according to the detection information of the obstacle sensor.

Step S3: if not, controlling the driving device to start; at this time, the detection information indicates that no obstacle exists within a preset distance in the movement direction of the drawer door assembly, and the controller controls the driving device to start according to the detection information indicating that no obstacle exists within the preset distance in the movement direction of the drawer door assembly, so that the drawer door assembly is automatically opened or closed. If yes, go to step S2; at this time, the detection information indicates that an obstacle exists within a preset distance in the movement direction of the drawer door assembly.

In order to remind a user that a barrier exists in the preset distance in the moving direction of the drawer door assembly, and the drawer door assembly of the refrigerator stops moving, the refrigerator provided by the embodiment of the invention further comprises a barrier alarm unit, wherein at the moment, an input instruction of the instruction input unit is received, after the barrier exists in the preset distance in the moving direction of the drawer door assembly, the alarm unit is started to alarm, and when the barrier does not exist in the preset distance in the moving direction of the drawer door assembly, the alarm unit is closed, and the driving device is controlled to start; in the movement process of the drawer door assembly, when the situation that an obstacle exists in the preset distance in the movement direction of the drawer door assembly is detected, the driving device is controlled to stop, the alarm unit is started to give an alarm, and when the situation that no obstacle exists in the preset distance in the movement direction of the drawer door assembly is detected, the alarm unit is closed, and the driving device is controlled to start.

Specifically, referring to fig. 10, the control process of the refrigerator in use includes:

Step S32: if not, the driving device is controlled to be started, at the moment, the detection information indicates that no barrier exists in the preset distance in the movement direction of the drawer door assembly, and the controller controls the driving device to be started according to the detection information that no barrier exists in the preset distance in the movement direction of the drawer door assembly, so that the drawer door assembly is automatically opened or closed. In addition, since a new obstacle may occur again within a preset distance in the moving direction, in order to avoid collision with the new obstacle while moving, step S41 is performed.

Step S52: if yes, the alarm unit is started, at the moment, the detection information indicates that an obstacle exists in the preset distance in the movement direction of the drawer door assembly, and the controller starts the alarm unit to remind a user that the obstacle exists in the preset distance in the movement direction of the drawer door assembly according to the detection information that the obstacle exists in the preset distance in the movement direction of the drawer door assembly. In addition, when the user removes the obstacle, in order to automatically open or close the drawer door assembly, step S42 is performed.

Step S41: judging whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly; the controller judges whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly according to the detection information of the obstacle sensor.

Step S51: if so, the driving device is controlled to stop, and at this time, the detection information indicates that an obstacle exists within the preset distance in the moving direction of the drawer door assembly, and step S52 is executed to remind the user that an obstacle exists within the preset distance in the moving direction of the drawer door assembly. If not, at this time, the detection information indicates that no obstacle exists within the preset distance in the moving direction of the drawer door assembly, and since a new obstacle may still appear within the preset distance in the moving direction, step S41 is performed to avoid collision with the new obstacle during the moving.

Step S42: judging whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly; the controller judges whether an obstacle exists within a preset distance in the moving direction of the drawer door assembly according to the detection information of the obstacle sensor.

Step S31: if not, the alarm unit is closed; at the moment, the detection information indicates that no barrier exists in the preset distance in the movement direction of the drawer door assembly; since the alarm unit is in the activated state and the driving device is in the stopped state before the step S31, the controller controls the alarm unit to be turned off and performs the step S32; if yes, at this time, the detection information is that an obstacle exists within a preset distance in the moving direction of the drawer door assembly, and when the user removes the obstacle, in order to automatically open or close the drawer door assembly, step S42 is performed.

It should be understood that when the barrier inductor detects that there is not the barrier in the ascending predetermined distance of the direction of motion of drawer door subassembly, controller control drive arrangement starts, moves to open position or closed position completely when drawer door subassembly, and the controller needs control drive arrangement to stop, so the utility model discloses a refrigerator still includes push-and-pull position sensor, and at this moment, when the positional information that detects for opening positional information or closing positional information, control drive arrangement stops.

Specifically, referring to fig. 11, the control process of the refrigerator in use further includes:

step S6: determining whether the drawer door assembly reaches a fully open position or a fully closed position;

step S7: if yes, controlling the driving device to stop; if not, go to step S41.

In order to avoid the emergence of the unable condition of access food of user when the unexpected outage, the utility model discloses a drive arrangement of refrigerator includes motor, clutch and rack and pinion mechanism, and rack and pinion mechanism is connected with the drawer door subassembly, this moment, control drive arrangement starts and includes: controlling the clutch to be sucked with the gear rack mechanism and controlling the motor to start; the controlling the driving device to stop includes: and controlling the clutch to be separated from the gear rack mechanism and controlling the motor to stop. Like this, when unexpected outage, the clutch outage and be in the disengagement state, the resistance of motor auto-lock can not influence the rotation of gear, and the user can open or close drawer door subassembly through manual operation, and the user can't access food when avoiding unexpected outage.

Specifically, referring to fig. 12, the control process of the refrigerator in use further includes:

step S321: controlling the clutch to be sucked with the gear rack mechanism and controlling the motor to start;

step S511: the clutch is controlled to be separated from the gear rack mechanism, and the motor is controlled to stop;

step S71: and controlling the clutch to be separated from the gear rack mechanism and controlling the motor to stop.

It should be noted that, the detection of each different function is realized by various sensors, which specifically includes: the system comprises an obstacle sensor, a memory unit, a push-pull position sensor and an alarm unit, wherein the sensors are electrically connected with a controller, in the actual step, the sensors can send detected information to the controller, the controller can carry out corresponding control according to the information, or the sensors can store the detected information, and the controller can obtain the information and carry out corresponding control according to the information.

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

Claims

1. A refrigerator comprises a storage box body and a drawer door assembly which is connected to the storage box body in a sliding mode, and is characterized in that the drawer door assembly comprises a drawer door plate and a storage part fixedly connected with the drawer door plate; the storage part is connected with the storage box body through a sliding rail;

the refrigerator further includes:

the driving device is in driving connection with the storage part and is used for driving the storage part to slide along the sliding rail so as to open or close the drawer door assembly;

an obstacle sensor for detecting whether an obstacle exists within a preset distance in a movement direction of the drawer door assembly;

the controller is electrically connected with the driving device, and the obstacle sensor is electrically connected with the controller;

when the obstacle sensor detects that an obstacle exists within a preset distance in the movement direction of the drawer door assembly, the controller controls the driving device to stop; when the obstacle sensor detects that no obstacle exists within a preset distance in the moving direction of the drawer door assembly, the controller controls the driving device to start.

2. The refrigerator of claim 1, comprising an instruction input unit electrically coupled with the controller for a user to input an operation instruction to the controller.

3. The refrigerator of claim 1, further comprising an alarm unit electrically coupled to the obstacle sensor or the controller,

when the obstacle sensor detects that an obstacle exists in a preset distance in the movement direction of the drawer door assembly, the controller controls the driving device to stop, and the alarm unit gives an alarm.

4. The refrigerator of claim 1, wherein the obstacle sensor is an infrared sensor, a microwave sensor, or a radar device.

5. The refrigerator as claimed in claim 1, wherein the controller includes a memory unit for recording a moving direction of the drawer door assembly, and when the controller controls the driving device to stop during the movement of the drawer door assembly and to start the driving device again, the controller controls the driving device to open and to move the drawer door assembly continuously in the moving direction before the stop according to the recording of the moving direction of the drawer door assembly by the memory unit.

6. The refrigerator of claim 1, further comprising a push-pull position sensor electrically coupled to the controller for detecting position information of the drawer door assembly, wherein the position information includes at least open position information when the drawer door assembly is fully open and closed position information when the drawer door assembly is fully closed;

and when the position information detected by the push-pull position sensor is the opening position information or the closing position information, the controller controls the driving device to stop.

7. The refrigerator of claim 6, wherein the push-pull position sensor includes an induction trigger provided on the drawer door assembly and an open state induction point and a closed state induction point provided on the storage compartment body, respectively, the induction trigger being disposed rearward of the drawer door assembly toward the open position, the open state induction point being disposed forward of the storage compartment body toward the open position, and the closed state induction point being disposed rearward of the storage compartment body toward the open position.

8. The refrigerator according to claim 1, wherein the driving means includes a motor and a rack and pinion mechanism including a gear and a rack engaged with the gear, the gear being fixedly connected to an output shaft of the motor;

the motor is fixed on the storage box body, and the rack is fixed on the drawer door assembly, or;

the motor is fixed on the drawer door assembly, and the rack is fixed on the storage box body.

9. The refrigerator as claimed in claim 8, wherein a clutch is further disposed between the motor and the rack and pinion mechanism, the clutch is electrically connected to the controller, and the controller can control the clutch to be engaged and disengaged;

or;

the clutch is positioned between two meshed gears in the gear box and electrically connected with the controller, and the controller can control the attraction and the separation of the clutch.