CN219913667U

CN219913667U - Refrigerator with a refrigerator body

Info

Publication number: CN219913667U
Application number: CN202320890646.6U
Authority: CN
Inventors: 程莎莎; 朱彤
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-10-27
Anticipated expiration: 2033-04-19

Abstract

The utility model provides a refrigerator. The refrigerator comprises a refrigerator body, a drawer door and a door opening and closing device, wherein the refrigerator body is provided with a containing cavity with an opening; the door opening and closing device comprises a bracket assembly, a driving assembly and a pulley assembly, wherein the bracket assembly is connected with the side wall of the accommodating cavity, and is connected with the drawer door; the pulley assembly is connected with the bracket assembly, and the pulley assembly is connected with the driving assembly, and the driving assembly drives the bracket assembly to slide relative to the refrigerator body through the pulley assembly, so that the drawer door opens or closes the opening of the accommodating cavity. The refrigerator provided by the utility model has higher use convenience.

Description

Refrigerator with a refrigerator body

Technical Field

The utility model relates to the technical field of household appliances, in particular to a refrigerator.

Background

Along with the continuous improvement of the living standard of people, the intelligent home has become an unavoidable development trend, various products conforming to the intelligent home have also been produced, the refrigerator is an indispensable tool for modern home life, and the intelligent and high-performance refrigerator has become an important link of the intelligent home, and has become a market pet.

In the related art, a refrigerator includes a refrigerator body and a drawer type refrigerator body slidably connected with the refrigerator body. When food is placed in the drawer type box body, the drawer type box body needs to be pulled manually, so that the drawer type box body moves away from the refrigerator body. After the food is placed, the drawer type box body needs to be manually pushed, so that the drawer type box body moves towards the refrigerator body.

However, the above refrigerator is inferior in use convenience.

Disclosure of Invention

The utility model provides a refrigerator with high use convenience.

The utility model provides a refrigerator, which comprises a refrigerator body, a drawer door and a door opening and closing device, wherein the refrigerator body is provided with a containing cavity with an opening;

the door opening and closing device comprises a bracket assembly, a driving assembly and a pulley assembly, wherein the bracket assembly is connected with the side wall of the accommodating cavity, and is connected with the drawer door;

the pulley assembly is connected with the bracket assembly, and the pulley assembly is connected with the driving assembly, and the driving assembly drives the bracket assembly to slide relative to the refrigerator body through the pulley assembly, so that the drawer door opens or closes the opening of the accommodating cavity.

In one possible implementation manner, the refrigerator provided by the utility model comprises a pulley assembly and a second pulley assembly, wherein the first pulley assembly and the second pulley assembly are connected with a bracket assembly, and the first pulley assembly and the second pulley assembly are connected with a driving assembly;

when the driving component rotates along the first direction, the driving component drives the bracket component to slide relative to the refrigerator body through the first pulley component so as to enable the drawer door to open the opening of the accommodating cavity;

when the driving component rotates along the second direction, the driving component drives the bracket component to slide relative to the refrigerator body through the second pulley component so as to enable the drawer door to close the opening of the accommodating cavity;

one of the first direction and the second direction is clockwise, and the other is anticlockwise.

In a possible implementation manner, the refrigerator provided by the utility model comprises a bracket component and a fixed bracket, wherein the fixed bracket is positioned on two opposite sides of the movable bracket, the fixed bracket is fixedly connected with the side wall of the accommodating cavity, the movable bracket is in sliding connection with the fixed bracket, one end of the movable bracket, which is away from the refrigerator body, is connected with the drawer door, the fixed bracket and the movable bracket are both connected with the pulley component, and the driving component is connected with the fixed bracket.

In a possible implementation manner, the refrigerator provided by the utility model comprises a first pulley assembly, a first rope, a plurality of first pulley structures and a plurality of second pulley structures, wherein the first pulley structure is rotationally connected with a movable support, the second pulley structure is rotationally connected with a fixed support, the first pulley structure is connected with a driving assembly and is rotationally connected with the fixed support, one end of the first rope is wound on the first pulley structure, and the other end of the first rope is fixedly connected with the fixed support after passing through the second pulley structure and the first pulley structure;

the driving assembly drives the first wire wheel structure to rotate, and the first wire wheel structure drives the movable support to slide relative to the fixed support through the first rope and the first pulley structure, so that the drawer door opens the opening of the accommodating cavity.

In one possible implementation manner, the refrigerator provided by the utility model has one first pulley structure and three second pulley structures, wherein the first second pulley structure is positioned above the first pulley structure, the second pulley structure is positioned at one side of the first second pulley structure, which faces the drawer door, the third second pulley structure is positioned above the second pulley structure, and the first pulley structure is positioned between the second pulley structure and the third second pulley structure;

one end of the first rope is wound on the first reel structure, and the other end of the first rope is fixedly connected with the fixed support after passing through the first second pulley structure, the second pulley structure, the first pulley structure and the third second pulley structure in sequence.

In one possible implementation manner, the refrigerator provided by the utility model has the advantages that the first coil structure comprises a first coil structure body, the first fixing piece and the first winding piece, and the first winding piece and the first fixing piece are connected with the first coil structure body;

the first winding piece comprises a first base circle part, a first involute part, a first circular arc part and a first vertical part, wherein one end of the first involute part is connected with the first base circle part, the other end of the first involute part is connected with one end of the first circular arc part, the other end of the first circular arc part is connected with one end of the first vertical part, and a gap is reserved between the first vertical part and the first base circle part;

the first fixing piece is located in an area surrounded by the first winding piece.

In a possible implementation manner, the refrigerator provided by the utility model comprises a second pulley assembly, a second rope, a plurality of third pulley structures and a plurality of fourth pulley structures, wherein the third pulley structures are rotationally connected with a fixed support, the fourth pulley structures are rotationally connected with a movable support, the second pulley assembly is connected with a driving assembly and is rotationally connected with the fixed support, one end of the second rope is wound on the second pulley structure, and the other end of the second rope is fixedly connected with the movable support after passing through the third pulley structures and the fourth pulley structures;

the driving assembly drives the second wire wheel structure to rotate, and the second wire wheel structure drives the movable support to slide relative to the fixed support through the second rope and the fourth pulley structure, so that the drawer door closes the opening of the accommodating cavity.

In one possible implementation manner, the refrigerator provided by the utility model has one third pulley structure and one fourth pulley structure, wherein the third pulley structure is positioned above the second wire wheel structure, and the fourth pulley structure is positioned at one side of the third pulley structure facing the drawer door;

one end of the second rope is wound on the second wire wheel structure, and the other end of the second rope is fixedly connected with the movable support after passing through the third pulley structure and the fourth pulley structure in sequence.

In one possible implementation manner, the refrigerator provided by the utility model has the advantages that the second wire wheel structure comprises a second wire wheel structure body, a second fixing piece and a second winding piece, and the second winding piece and the second fixing piece are connected with the second wire wheel structure body;

the second winding piece comprises a second base circle part, a second involute part, a second circular arc part and a second vertical part, one end of the second involute part is connected with the second base circle part, the other end of the second involute part is connected with one end of the second circular arc part, the other end of the second circular arc part is connected with one end of the second vertical part, and a gap is reserved between the second vertical part and the second base circle part;

the second fixing piece is located in the area surrounded by the second winding piece.

In a possible implementation manner, the refrigerator provided by the utility model comprises a driving component, a first driving wheel, a second driving wheel and a driving shaft, wherein the driving component is fixedly connected with the fixed support, the first driving wheel is connected with the driving component, the second driving wheel is connected with the first driving wheel, the second driving wheel, the first line wheel structure and the second line wheel structure are sleeved on the driving shaft, and the driving component drives the first line wheel structure and the second line wheel structure to rotate through the first driving wheel, the second driving wheel and the driving shaft.

According to the refrigerator provided by the utility model, the refrigerator body, the drawer door and the door opening and closing device are arranged, and the refrigerator body is provided with the accommodating cavity with the opening. The door opening and closing device comprises a bracket assembly, a driving assembly and a pulley assembly, wherein the bracket assembly is connected with the side wall of the accommodating cavity, and the bracket assembly is connected with the drawer door. The pulley assembly is connected with the bracket assembly, and the pulley assembly is connected with the driving assembly, and the driving assembly drives the bracket assembly to slide relative to the refrigerator body through the pulley assembly, so that the drawer door opens or closes the opening of the accommodating cavity. Therefore, the automatic opening and closing of the drawer door can be realized by utilizing the door opening and closing device, so that the convenience for taking and placing food by a user is high.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a door opening and closing device in a refrigerator according to an embodiment of the present utility model;

fig. 3 is an exploded view of a door opening and closing device in a refrigerator according to an embodiment of the present utility model;

fig. 4 is a schematic view illustrating a position of a driving assembly in a refrigerator according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a first pulley assembly in a refrigerator according to an embodiment of the present utility model;

fig. 6 is a schematic view illustrating another angle of the first pulley assembly in the refrigerator according to the embodiment of the present utility model;

fig. 7 is a schematic structural view of a second pulley assembly in a refrigerator according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a first reel structure in a refrigerator according to an embodiment of the present utility model;

FIG. 9 is a top view of FIG. 8;

fig. 10 is a schematic view of a second reel structure and a second driving wheel in a refrigerator according to an embodiment of the present utility model;

FIG. 11 is a front view of the present FIG. 10;

fig. 12 is a schematic structural view of a first pulley structure in a refrigerator according to an embodiment of the present utility model;

fig. 13 is an exploded view of a first pulley structure in a refrigerator according to an embodiment of the present utility model.

Reference numerals illustrate:

100-refrigerator body; 200-drawer door; 300-door opening and closing device; 310-a bracket assembly; 311-a movable bracket; 312-fixing the bracket; 313-roller; 314-cover plate; 320-a drive assembly; 321-a driver; 322-a first drive wheel; 323-a second drive wheel; 330-pulley assembly; 331-a first pulley assembly; 3311-first reel structure; 3311 a-first pulley structure body; 3311b—a first mount; 3311 c-first wire wrap; 3311d—a first base circle portion; 3311 e-first involute portion; 3311 f-first circular arc portion; 3311 g-first vertical section; 3312-first rope; 3313—a first pulley structure; 3313 a-pulley; 3313 b-stop; 3314-second pulley arrangement; 332-a second pulley assembly; 3321-second reel structure; 3321 a-second pulley structure body; 3321 b-second mount; 3321 c-second wire winding; 3321 d-second base circle portion; 3321 e-second involute portion; 3321 f-second circular arc portion; 3321 g-second vertical portion; 3322-second rope; 3323-third pulley arrangement; 3324-fourth pulley structure.

Detailed Description

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected via an intermediate medium, in communication with each other, or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms first, second, third and the like in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or maintenance tool.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the related art, a refrigerator includes a refrigerator body and a drawer type refrigerator body slidably connected with the refrigerator body. When food is placed in the drawer type box body, the drawer type box body needs to be pulled manually, so that the drawer type box body moves away from the refrigerator body. After the food is placed, the drawer type box body needs to be manually pushed, so that the drawer type box body moves towards the refrigerator body. However, when food is held in the user's hand, the drawer type case is inconvenient to open, and thus the convenience of use of the refrigerator is poor.

In order to solve the technical problems, the utility model provides a refrigerator, which realizes automatic opening and closing of a drawer door by arranging a door opening and closing device.

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present utility model, fig. 2 is a schematic structural view of a door opening and closing device in a refrigerator according to an embodiment of the present utility model, fig. 3 is an exploded view of a door opening and closing device in a refrigerator according to an embodiment of the present utility model, and fig. 4 is a schematic positional view of a driving assembly in a refrigerator according to an embodiment of the present utility model.

Referring to fig. 1 to 4, the refrigerator provided by the present utility model includes a refrigerator body 100, a drawer door 200, and a door opening and closing device 300.

Wherein the refrigerator body 100 is provided with a receiving cavity having an opening. The receiving cavity may be a refrigerated area or the receiving cavity may be a frozen area.

The door opening and closing device 300 includes a bracket assembly 310, a driving assembly 320, and a pulley assembly 330, the bracket assembly 310 is connected with a sidewall of the receiving cavity, and the bracket assembly 310 is connected with the drawer door 200.

Wherein the pulley assembly 330 is connected with the bracket assembly 310, and the pulley assembly 330 is connected with the driving assembly 320, and the driving assembly 320 drives the bracket assembly 310 to slide relative to the refrigerator body 100 through the pulley assembly 330, so that the drawer door 200 opens or closes the opening of the receiving cavity.

It will be appreciated that the pulley assembly 330 occupies a small space, and the pulley assembly 330 is used to drive the bracket assembly 310 to slide relative to the refrigerator body 100, so as to facilitate the layout of the door opening and closing device 300. Further, the pulley assembly 330 has high transmission reliability.

When food needs to be placed in the accommodating cavity, the driving assembly 320 drives the bracket assembly 310 to slide away from the refrigerator body 100 relative to the refrigerator body 100 through the pulley assembly 330, so that the drawer door 200 opens the opening of the accommodating cavity. After the foods are placed, the driving assembly 320 drives the bracket assembly 310 to slide toward the refrigerator body 100 with respect to the refrigerator body 100 through the pulley assembly 330, so that the drawer door 200 closes the opening of the receiving cavity. Therefore, under the condition that a user is inconvenient to hold food and open the door manually, the refrigerator can automatically open and close the door, and the convenience of use is high.

Fig. 5 is a schematic structural view of a first pulley assembly in a refrigerator according to an embodiment of the present utility model, fig. 6 is a schematic structural view of another angle of the first pulley assembly in the refrigerator according to an embodiment of the present utility model, and fig. 7 is a schematic structural view of a second pulley assembly in the refrigerator according to an embodiment of the present utility model.

Referring to fig. 5 to 7, in one possible implementation, the pulley assembly 330 includes a first pulley assembly 331 and a second pulley assembly 332, the first pulley assembly 331 and the second pulley assembly 332 are each connected with the bracket assembly 310, and the first pulley assembly 331 and the second pulley assembly 332 are each connected with the driving assembly 320.

When the driving assembly 320 rotates in the first direction, the driving assembly 320 drives the bracket assembly 310 to slide relative to the refrigerator body 100 through the first pulley assembly 331, so that the drawer door 200 opens the opening of the receiving cavity.

When the driving assembly 320 rotates in the second direction, the driving assembly 320 drives the bracket assembly 310 to slide relative to the refrigerator body 100 through the second pulley assembly 332, so that the drawer door 200 closes the opening of the receiving cavity.

One of the first direction and the second direction is clockwise, and the other is anticlockwise. Illustratively, when the driving assembly 320 rotates clockwise, the driving assembly 320 drives the bracket assembly 310 to slide with respect to the refrigerator body 100 through the first pulley assembly 331, so that the drawer door 200 opens the opening of the receiving cavity. When the driving assembly 320 rotates counterclockwise, the driving assembly 320 drives the bracket assembly 310 to slide with respect to the refrigerator body 100 through the second pulley assembly 332, so that the drawer door 200 closes the opening of the receiving cavity. Alternatively, when the driving assembly 320 rotates counterclockwise, the driving assembly 320 drives the bracket assembly 310 to slide with respect to the refrigerator body 100 through the first pulley assembly 331, so that the drawer door 200 opens the opening of the receiving cavity. When the driving assembly 320 rotates clockwise, the driving assembly 320 drives the bracket assembly 310 to slide with respect to the refrigerator body 100 through the second pulley assembly 332, so that the drawer door 200 closes the opening of the receiving cavity.

It can be appreciated that when the driving assembly 320 rotates in the first direction, the driving assembly 320 drives the bracket assembly 310 to slide relative to the refrigerator body 100 through the first pulley assembly 331 so that the drawer door 200 opens the opening of the accommodating cavity, and when the driving assembly 320 rotates in the second direction, the driving assembly 320 drives the bracket assembly 310 to slide relative to the refrigerator body 100 through the second pulley assembly 332 so that the drawer door 200 closes the opening of the accommodating cavity. In this way, the number of the driving assemblies 320 can be set to one, which is advantageous in terms of simplification of the structure and reduction of the occupied space.

It should be noted that, in other embodiments, the number of driving assemblies 320 may be two, where one driving assembly 320 drives the bracket assembly 310 to slide relative to the refrigerator body 100 through the first pulley assembly 331, so that the drawer door 200 opens the opening of the accommodating cavity. The other driving assembly 320 drives the bracket assembly 310 to slide with respect to the refrigerator body 100 through the second pulley assembly 332, so that the drawer door 200 closes the opening of the receiving cavity.

Referring to fig. 2 to 4, the bracket assembly 310 includes a movable bracket 311 and a fixed bracket 312, the fixed bracket 312 is positioned at opposite sides of the movable bracket 311, the fixed bracket 312 is fixedly connected with a sidewall of the receiving chamber, the movable bracket 311 is slidably connected with the fixed bracket 312, one end of the movable bracket 311 facing away from the refrigerator body 100 is connected with the drawer door 200, the fixed bracket 312 and the movable bracket 311 are both connected with the pulley assembly 330, and the driving assembly 320 is connected with the fixed bracket 312.

The rollers 313 may be disposed between the movable bracket 311 and the fixed bracket 312, so as to reduce friction between the movable bracket 311 and the fixed bracket 312 and improve smoothness of door opening and closing actions.

It will be appreciated that the bracket assembly 310 may be pre-installed on the bracket assembly 310 by providing the movable bracket 311 and the fixed bracket 312, and then installing the bracket assembly 310 on the refrigerator body 100. In this way, the speed of assembly can be increased. Also, the bracket assembly 310, the drawer door 200, and the door opening and closing device 300 may form a modular structure to accommodate different models of refrigerator bodies 100. Alternatively, the refrigerator body 100 of different sizes may be accommodated by a modular structure provided in different sizes. Thus, repetitive design work can be reduced.

It should be noted that, in other embodiments, the bracket assembly 310 includes a movable bracket 311, the movable bracket 311 is slidably connected with a side wall of the accommodating cavity, one end of the movable bracket 311, which faces away from the refrigerator body 100, is connected with the drawer door 200, the pulley assembly 330 is connected with the movable bracket 311, the pulley assembly 330 is connected with the side wall of the accommodating cavity, and the driving assembly 320 is connected with the side wall of the accommodating cavity.

Referring to fig. 2 and 4, the driving assembly 320 includes a driving member 321, a first driving wheel 322, a second driving wheel 323, and a driving shaft (not shown), the driving member 321 is fixedly connected to the fixing frame 312, the first driving wheel 322 is connected to the driving member 321, the second driving wheel 323 is connected to the first driving wheel 322, and the second driving wheel 323, the first pulley assembly 331, and the second pulley assembly 332 are all sleeved on the driving shaft, and the driving member 321 drives the first pulley assembly 331 and the second pulley assembly 332 to rotate through the first driving wheel 322, the second driving wheel 323, and the driving shaft. In this way, the first pulley assembly 331 and the second pulley assembly 332 can be simultaneously driven to rotate by one driving member 321, so that the cost can be reduced and the space can be saved.

It can be appreciated that the driving member 321 is fixed on the fixed support 312, and the driving member 321 does not need to slide along with the movable support 311 relative to the fixed support 312, so as to facilitate the fixing of the wire harness of the driving member 321.

Wherein the driving member 321 may be a motor. Specifically, the driving member 321 may be a flattened stepper motor, which can reduce the occupation of the space in the accommodating cavity and increase the usage volume of the refrigerator. Moreover, the driving member 321 is conveniently protected from water.

In some embodiments, to improve protection of the driving assembly 320, a cover plate 314 is further provided, where the cover plate 314 is disposed on the driving assembly 320 and is connected to the fixing bracket 312.

In this embodiment, the first driving wheel 322 and the second driving wheel 323 may be gears matched with each other. In this way, the first driving wheel 322 and the second driving wheel 323 have compact structural layout, small occupied space and high running stability. Wherein the number of teeth of the first driving wheel 322 is smaller than that of the second driving wheel 323, thereby increasing the output torque of the driving member 321.

In another embodiment, the first driving wheel 322 and the second driving wheel 323 may be pulleys, and the first driving wheel 322 and the second driving wheel 323 are connected by a belt. Alternatively, the first driving wheel 322 and the second driving wheel 323 may be sprockets, and the first driving wheel 322 and the second driving wheel 323 are connected by a chain.

Referring to fig. 5 and 6, the first pulley assembly 331 includes a first pulley structure 3311, a first rope 3312, a plurality of first pulley structures 3313 and a plurality of second pulley structures 3314, the first pulley structure 3313 is rotatably connected with the movable bracket 311, the second pulley structure 3314 is rotatably connected with the fixed bracket 312, the first pulley structure 3311 is connected with the driving assembly 320 and is rotatably connected with the fixed bracket 312, one end of the first rope 3312 is wound on the first pulley structure 3311, and the other end is fixedly connected with the fixed bracket 312 after passing through the second pulley structure 3314 and the first pulley structure 3313.

The driving assembly 320 drives the first pulley structure 3311 to rotate, and the first pulley structure 3311 drives the movable bracket 311 to slide relative to the fixed bracket 312 through the first rope 3312 and the first pulley structure 3313, so that the drawer door 200 opens the opening of the receiving chamber.

Wherein the first rope 3312 may be a wire rope. It is understood that the reliability is higher than the injection gear structure by the driving of the steel wire.

The first pulley structure 3313 corresponds to a movable pulley, which can save labor. The second pulley structure 3314 corresponds to a fixed pulley and can change the direction of the force. Thus, the arrangement of the first ropes 3312 may be facilitated by a number of first pulley structures 3313 and a number of second pulley structures 3314.

Specifically, referring to fig. 5 and 6, the number of the first pulley structures 3313 is one, the number of the second pulley structures 3314 is three, the first second pulley structure 3314 is located above the first pulley structure 3311, the second pulley structure 3314 is located at a side of the first second pulley structure 3314 facing the drawer door 200, the third second pulley structure 3314 is located above the second pulley structure 3314, and the first pulley structure 3313 is located between the second pulley structure 3314 and the third second pulley structure 3314.

One end of the first rope 3312 is wound around the first pulley structure 3311, and the other end is fixedly connected with the fixed bracket 312 after passing through the first second pulley structure 3314, the second pulley structure 3314, the first pulley structure 3313 and the third second pulley structure 3314 in sequence.

Referring to fig. 5, the first pulley structure 3311 rotates clockwise, the first rope 3312 is wound around the first pulley structure 3311, and the first rope 3312 drives the movable bracket 311 to move toward a side facing away from the refrigerator body 100 through the first pulley structure 3313, thereby causing the drawer door 200 to open the opening of the receiving chamber.

Fig. 8 is a schematic structural view of a first reel structure in a refrigerator according to an embodiment of the present utility model. Fig. 9 is a top view of fig. 8.

In the initial stage of opening, the refrigerator requires the maximum door opening force due to negative pressure, and the pressure in the refrigerator is released after the door is opened, so that the opening and closing actions can be realized only by overcoming the rolling friction force of the slide way. The torque requirements on the driver 321 are small. Therefore, in this embodiment, the door opening rate is a nonlinear design, so that the door opening rate is more fit with the actual operation requirement, and the use convenience of the user is improved.

Referring to fig. 8 and 9, the first pulley structure 3311 includes a first pulley structure body 3311a, a first fixing member 3311b and a first wire winding member 3311c, and the first wire winding member 3311c and the first fixing member 3311b are connected to the first pulley structure body 3311 a.

The first winding part 3311c includes a first base circle part 3311d, a first involute part 3311e, a first arc part 3311f, and a first vertical part 3311g, one end of the first involute part 3311e is connected to the first base circle part 3311d, the other end of the first involute part 3311e is connected to one end of the first arc part 3311f, the other end of the first arc part 3311f is connected to one end of the first vertical part 3311g, and the first vertical part 3311g has a gap with the first base circle part 3311 d. The first fixing member 3311b is located in an area surrounded by the first winding member 3311 c.

Referring to fig. 5, one end of the first rope 3312 is fixed to the first fixing member 3311b, and the first pulley structure 3311 rotates clockwise, and the first rope 3312 is wound along the first base circle portion 3311d, the first involute portion 3311e, and the first arc portion 3311f in this order. Thus, the door opening rate may be of a non-linear design.

The output torque of the door opening time driving member 321 is calculated as follows:

illustratively, the opening force of the drawer door 200 is not more than 50N, and the total weight of the portion sliding with respect to the refrigerator body 100 is 50kg, thereby deriving the output torque of the driver 321.

1. In the initial stage of opening the door, the negative pressure in the refrigerator causes the maximum door opening force at the moment:

F _max ＝50N

2. the tension of the first rope 3312 is, by switching between the first pulley structure 3313 and the second pulley structure 3314:

fpull=f _max ÷2＝25N

3. At the initial stress point moment arm l1=8mm of the first pulley structure 3311, the first pulley structure 3311 receives the torque:

M ₁ =fLaxL1=25×0.008=0.2N.m

The torque transmitted to the driver 321 is:

the actuation torque of the driver 321 should be greater than

0.05×1.3＝0.065N

Wherein Z is ₁ Z is the number of teeth of the first driving wheel 322 ₂ Is the number of teeth of the second driving wheel 323. Wherein, 1.3 is the safety coefficient.

4. In the process of opening the door, the rolling friction resistance is mainly overcome. At this time, the force arm of the force point of the first pulley structure 3311 is l2=50mm:

coefficient of rolling friction: steel and plastic 0.1 (with a smoothing agent). The deep groove ball bearing is 0.001-0.0015, preferably a bearing roller. When plastic rollers are selected, the values of L1 and L2 are required to be reduced appropriately.

The torque requirement for opening the process drive 321 is calculated with the bearing roller as follows:

the rolling friction force is as follows:

f＝500×0.0015×4＝3N

wherein 4 is a coefficient including the friction generated by the first pulley structure 3311

The first pulley structure 3311 outputs torque:

M ₁ ＝f×L2＝3×0.05＝0.15N

the torque of the driver 321 is:

therefore, the drive piece 321 with the thickness of 0.08N.m is selected, and the requirement of opening and closing the door can be met.

It can be appreciated that through the above calculation, it can be proved that the refrigerator provided in this embodiment can reduce the requirement for the output torque of the driving member 321, thereby reducing the cost and saving energy.

Fig. 10 is a schematic view of a second reel structure and a second driving wheel in a refrigerator according to an embodiment of the present utility model, and fig. 11 is a front view of fig. 10.

Referring to fig. 7, 10 and 11, the second pulley assembly 332 includes a second pulley structure 3321, a second rope 3322, a plurality of third pulley structures 3323 and a plurality of fourth pulley structures 3324, the third pulley structures 3323 are rotatably connected with the fixed support 312, the fourth pulley structures 3324 are rotatably connected with the movable support 311, the second pulley structure 3321 is connected with the driving assembly 320 and is rotatably connected with the fixed support 312, one end of the second rope 3322 is wound on the second pulley structure 3321, and the other end of the second rope is fixedly connected with the movable support 311 after passing through the third pulley structures 3323 and the fourth pulley structures 3324.

The driving assembly 320 drives the second wire wheel structure 3321 to rotate, and the second wire wheel structure 3321 drives the movable bracket 311 to slide relative to the fixed bracket 312 through the second rope 3322 and the fourth pulley structure 3324, so that the drawer door 200 closes the opening of the accommodating cavity.

Wherein the second cords 3322 may be steel cords. It is understood that the reliability is higher than the injection gear structure by the driving of the steel wire.

The fourth pulley structure 3324 corresponds to a movable pulley, and can save labor. The third pulley structure 3323 corresponds to a fixed pulley and can change the direction of force. Accordingly, the placement of the second cords 3322 may be facilitated by a number of third pulley structures 3323 and a number of fourth pulley structures 3324.

Specifically, referring to fig. 7, the number of the third pulley structure 3323 and the fourth pulley structure 3324 is one, the third pulley structure 3323 is located above the second pulley structure, and the fourth pulley structure 3324 is located at a side of the third pulley structure 3323 facing the drawer door 200.

One end of the second rope 3322 is wound on the second pulley structure 3321, and the other end of the second rope is fixedly connected with the movable bracket 311 after passing through the third pulley structure 3323 and the fourth pulley structure 3324 in sequence.

Referring to fig. 7, the second pulley structure 3321 rotates counterclockwise, the second rope 3322 is wound on the second pulley structure 3321, and the second rope 3322 drives the movable bracket 311 to move toward the side close to the refrigerator body 100 through the fourth pulley structure 3324, so that the drawer door 200 closes the opening of the accommodating chamber.

In order to achieve the non-linear door closing speed, the second wire wheel structure 3321 includes a second wire wheel structure body 3321a, a second fixing member 3321b and a second wire winding member 3321c, and the second wire winding member 3321c and the second fixing member 3321b are connected with the second wire wheel structure body 3321 a.

The second winding piece 3321c includes a second base circle portion 3321d, a second involute portion 3321e, a second arc portion 3321f, and a second vertical portion 3321g, one end of the second involute portion 3321e is connected to the second base circle portion 3321d, the other end of the second involute portion 3321e is connected to one end of the second arc portion 3321f, the other end of the second arc portion 3321f is connected to one end of the second vertical portion 3321g, and the second vertical portion 3321g has a gap with the second base circle portion 3321 d.

The second fixing member 3321b is located in the area surrounded by the second winding member 3321 c.

Referring to fig. 7, one end of the second rope 3322 is fixed to the second fixing piece 3321b, the second wire wheel structure 3321 rotates counterclockwise, and the second rope 3322 is wound along the second base circle portion 3321d, the second involute portion 3321e to the second arc portion 3321f in this order. Thus, the door closing rate may be of a non-linear design.

In some embodiments, referring to fig. 10 and 11, the second pulley structure 3321 and the second driving wheel 323 may be integrally provided. Wherein, the circumference side of the second wire wheel structure body 3321a is provided with engagement teeth. In this way, space is advantageously saved.

Specifically, the first pulley structure 3311 and the second pulley structure 3321 are both sleeved on the driving shaft. The first pulley structure 3311 is located at a side of the second pulley structure 3321 facing away from the cover 314, and the driving member 321 drives the first pulley structure 3311 and the second pulley structure 3321 to rotate through the first driving wheel 322, the meshing teeth of the second pulley structure 3321 on the circumferential side and the driving shaft.

In other embodiments, the second pulley structure 3321 and the second driving wheel 323 may be provided separately.

Specifically, the second driving wheel 323, the first pulley structure 3311 and the second pulley structure 3321 are all sleeved on the driving shaft. The first pulley structure 3311 is located at a side of the second pulley structure 3321 facing away from the second driving wheel 323, and the driving member 321 drives the first pulley structure 3311 and the second pulley structure 3321 to rotate through the first driving wheel 322, the second driving wheel 323 and the driving shaft.

The specific structures of the first pulley structure 3313, the second pulley structure 3314, the third pulley structure 3323 and the fourth pulley structure 3324 may be the same, and for convenience of description, the first pulley structure 3313 will be described as an example.

Fig. 12 is a schematic structural view of a first pulley structure in a refrigerator according to an embodiment of the present utility model, and fig. 13 is an exploded view of the first pulley structure in the refrigerator according to the embodiment of the present utility model.

Referring to fig. 12 and 13, the first pulley structure 3313 includes a pulley 3313a and a stopper 3313b, the stopper 3313b is sleeved on the pulley 3313a, and the first rope 3312 is passed between the stopper 3313b and the pulley 3313a, thereby playing a role of limiting the first rope 3312.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The refrigerator is characterized by comprising a refrigerator body, a drawer door and a door opening and closing device, wherein the refrigerator body is provided with a containing cavity with an opening;

the door opening and closing device comprises a bracket assembly, a driving assembly and a pulley assembly, wherein the bracket assembly is connected with the side wall of the accommodating cavity, and the bracket assembly is connected with the drawer door;

the pulley assembly is connected with the bracket assembly, the pulley assembly is connected with the driving assembly, and the driving assembly drives the bracket assembly to slide relative to the refrigerator body through the pulley assembly, so that the drawer door is opened or closed to the opening of the accommodating cavity.

2. The refrigerator of claim 1, wherein the pulley assembly comprises a first pulley assembly and a second pulley assembly, the first pulley assembly and the second pulley assembly are each connected to the bracket assembly, and the first pulley assembly and the second pulley assembly are each connected to the drive assembly;

when the driving assembly rotates along a first direction, the driving assembly drives the bracket assembly to slide relative to the refrigerator body through the first pulley assembly so that the drawer door opens the opening of the accommodating cavity;

when the driving assembly rotates along a second direction, the driving assembly drives the bracket assembly to slide relative to the refrigerator body through the second pulley assembly so that the drawer door closes the opening of the accommodating cavity;

wherein one of the first direction and the second direction is clockwise, and the other is anticlockwise.

3. The refrigerator of claim 2, wherein the bracket assembly comprises a movable bracket and a fixed bracket, the fixed bracket is positioned on two opposite sides of the movable bracket, the fixed bracket is fixedly connected with the side wall of the accommodating cavity, the movable bracket is in sliding connection with the fixed bracket, one end of the movable bracket, which is away from the refrigerator body, is connected with the drawer door, the fixed bracket and the movable bracket are both connected with the pulley assembly, and the driving assembly is connected with the fixed bracket.

4. The refrigerator according to claim 3, wherein the first pulley assembly comprises a first pulley structure, a first rope, a plurality of first pulley structures and a plurality of second pulley structures, the first pulley structure is rotatably connected with the movable bracket, the second pulley structure is rotatably connected with the fixed bracket, the first pulley structure is connected with the driving assembly and is rotatably connected with the fixed bracket, one end of the first rope is wound on the first pulley structure, and the other end of the first rope is fixedly connected with the fixed bracket after passing through the second pulley structure and the first pulley structure;

5. The refrigerator of claim 4, wherein the number of the first pulley structures is one, the number of the second pulley structures is three, a first one of the second pulley structures is located above the first pulley structure, a second one of the second pulley structures is located at a side of the first one of the second pulley structures toward the drawer door, a third one of the second pulley structures is located above the second one of the second pulley structures, and the first pulley structure is located between the second one of the second pulley structures and the third one of the second pulley structures;

one end of the first rope is wound on the first reel structure, and the other end of the first rope is fixedly connected with the fixed support after passing through the first pulley structure, the second pulley structure, the first pulley structure and the third pulley structure in sequence.

6. The refrigerator of claim 4 or 5, wherein the first spool structure comprises a first spool structure body, a first fixing member, and a first wire winding member, the first wire winding member and the first fixing member each being connected to the first spool structure body;

the first winding piece comprises a first base circle part, a first involute part, a first circular arc part and a first vertical part, one end of the first involute part is connected with the first base circle part, the other end of the first involute part is connected with one end of the first circular arc part, the other end of the first circular arc part is connected with one end of the first vertical part, and a gap is reserved between the first vertical part and the first base circle part;

7. The refrigerator of claim 4, wherein the second pulley assembly comprises a second wire wheel structure, a second rope, a plurality of third pulley structures and a plurality of fourth pulley structures, the third pulley structures are rotatably connected with the fixed bracket, the fourth pulley structures are rotatably connected with the movable bracket, the second wire wheel structure is connected with the driving assembly and is rotatably connected with the fixed bracket, one end of the second rope is wound on the second wire wheel structure, and the other end of the second rope is fixedly connected with the movable bracket after passing through the third pulley structures and the fourth pulley structures;

8. The refrigerator of claim 7, wherein the number of the third pulley structure and the fourth pulley structure is one, the third pulley structure is located above the second pulley structure, and the fourth pulley structure is located at a side of the third pulley structure facing the drawer door;

9. The refrigerator of claim 7 or 8, wherein the second reel structure comprises a second reel structure body, a second fixing member, and a second wire winding member, the second wire winding member and the second fixing member being connected to the second reel structure body;

the second fixing piece is located in an area surrounded by the second winding piece.

10. The refrigerator of claim 7 or 8, wherein the driving assembly comprises a driving member, a first driving wheel, a second driving wheel and a driving shaft, the driving member is fixedly connected with the fixing support, the first driving wheel is connected with the driving member, the second driving wheel is connected with the first driving wheel, the second driving wheel, the first line wheel structure and the second line wheel structure are all sleeved on the driving shaft, and the driving member drives the first line wheel structure and the second line wheel structure to rotate through the first driving wheel, the second driving wheel and the driving shaft.