CN113932531B - Refrigerator with a refrigerator body - Google Patents

Abstract

The invention relates to a refrigerator, which comprises a refrigerator body, a layer frame, a supporting arm and a driving bracket, wherein a refrigerating compartment is arranged in the refrigerator body; the layer frame is arranged in the refrigerating compartment; the support arm is rotatably connected in the refrigerating compartment and supports the bottom of the layer rack; the driving bracket is movably arranged below the layer frame and can move along the front-back direction of the box body; the driving bracket is used for driving the supporting arm to rotate; the bottom of the layer frame is concavely provided with a limiting chute extending along the front-back direction of the box body, and the idler wheels are connected in the limiting chute in a sliding or rolling way so as to support and drive the layer frame to lift. The invention utilizes the cooperation of the driving bracket, the supporting arm and the layer rack, controls the rotation amplitude of the supporting arm by the forward and backward movement of the driving bracket, and utilizes the roller to support and adjust the height of the layer rack in the refrigerating compartment so as to realize the function of adjusting the lifting of the layer rack. Utilize spacing spout and gyro wheel cooperation, carry out spacingly to the gyro wheel, and then make the layer frame erect on the support arm steadily, ensure the stability of layer frame lift.

Description

Refrigerator with a refrigerator body

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator.

Background

With the improvement of the living standard of people, a refrigerator has become one of indispensable home appliances. In a large-capacity refrigerator, shelves are generally provided to facilitate layering of articles.

In the related art, for most refrigerators, the shelf position is fixed, and only a plurality of fixed positions can adjust the height of the shelf, and when the shelf position needs to be adjusted, the shelf position needs to be changed usually by cleaning up the articles on the shelf, which is very inconvenient. Some layer frame structures adopt a motor to drive the layer frame to move up and down, and the use aspect is that the cost of the whole layer frame structure is higher because the layer frame structure relates to the motor and other structures.

Disclosure of Invention

The invention aims to provide a refrigerator so as to optimize a layer frame structure in the refrigerator in the prior art, provide a structure for adjusting the layer frame to move up and down, and reduce the overall cost of the refrigerator.

In order to solve the technical problems, the invention adopts the following technical scheme:

according to one aspect of the present invention, there is provided a refrigerator including: the box body is internally provided with a refrigeration compartment; the layer rack is arranged in the refrigerating compartment; the support arm is arranged below the layer frame; one end of the supporting arm is hinged in the refrigerating compartment, and the other end of the supporting arm is provided with a roller; the roller is supported at the bottom of the layer frame; the driving bracket is movably arranged below the layer frame and can move along the front-back direction of the box body; the driving bracket is connected with the supporting arm and is used for driving the supporting arm to rotate around the hinge shaft of the supporting arm; the bottom of the layer frame is concavely provided with a limiting chute extending along the front-back direction of the box body, and the roller is slidably or rollingly connected in the limiting chute so as to support and drive the layer frame to lift.

According to some embodiments of the present application, the shelf comprises a shelf and a support frame detachably provided on the shelf; the shelf is of a plate-shaped structure and is transversely arranged in the refrigerating compartment; the supporting frame is arranged in the refrigerating compartment and extends along the front-back direction of the box body; the two support frames are arranged and are respectively arranged at two transverse end parts of the shelf; and the limiting chute is arranged on the supporting frame.

According to some embodiments of the present application, the support frame includes a support portion and a connection portion protruding below the support portion; a clamping groove is concavely formed in the side wall surface of the supporting part facing the shelf, and the end part of the shelf is inserted into the clamping groove; the limiting chute is concavely arranged on the side wall surface of the connecting part.

According to some embodiments of the present application, the limiting chute is concavely disposed on a side wall surface of the connecting portion facing away from the shelf; a space is arranged between the side wall surface of the connecting part, which is opposite to the shelf, and the inner side wall of the refrigeration compartment; the ends of the support arms extend into the space and are connected to the rollers.

According to some embodiments of the present application, a first clamping rib is convexly arranged on the inner top surface of the clamping groove, and a second clamping rib opposite to the first clamping rib is convexly arranged on the inner bottom surface of the clamping groove; the end part of the shelf is clamped between the first clamping rib and the second clamping rib.

According to some embodiments of the present application, the refrigerator further includes two mounting boxes, and the two mounting boxes are respectively and fixedly arranged on the left and right side walls of the refrigeration compartment; the two supporting frames are respectively erected on one mounting box; the support arm is arranged in the mounting box, and one end of the support arm is rotatably connected to the inner wall of the mounting box; the driving support is movably arranged in the mounting box.

According to some embodiments of the present application, the mounting box includes an inner wall plate and an outer wall plate that are disposed at an inner-outer interval, an accommodating space is formed between the outer wall plate and the inner wall plate, and the supporting arm and the driving bracket are both disposed in the accommodating space; when the shelf descends relative to the mounting box, the supporting portion can abut against the top of the outer wall plate, and meanwhile the connecting portion can abut against the top of the inner wall plate.

According to some embodiments of the present application, the top of the outer wall plate is higher than the top of the inner wall plate, and the top of the outer wall plate can cover the outer side of the limit chute.

According to some embodiments of the present application, the driving bracket includes a driving plate extending in a front-rear direction of the case and a driving arm protruding upward on the driving plate; the driving plate is movably arranged in the mounting box and can slide in the mounting box along the front-back direction of the box body; the driving arm is connected with the supporting arm and can drive the supporting arm to rotate.

According to some embodiments of the application, the driving plate is provided with a rack extending along the front-rear direction of the case; a gear assembly is arranged in the mounting box, and a handle is rotatably connected to the outer wall of the mounting box; the rotating end of the handle is in transmission connection with the gear assembly and is in meshed transmission connection with the rack through the gear assembly; when the handle rotates forwards or reversely, the handle can drive the driving plate to slide in the front-back direction of the box body in the mounting box.

As can be seen from the technical scheme, the embodiment of the invention has at least the following advantages and positive effects:

in the refrigerator provided by the embodiment of the invention, the driving bracket, the supporting arm and the layer rack are matched, the forward and backward movement of the driving bracket is utilized, the rotation amplitude of the supporting arm is further controlled, and the height of the layer rack in the refrigerating compartment is supported and adjusted by the roller, so that the function of adjusting the lifting of the layer rack is realized. The linear motion of the driving support is converted into the rotary motion of the supporting arm through the cooperation of the driving support and the supporting arm, and finally the rotary motion of the supporting arm is converted into the lifting motion of the layer frame through the roller, so that the supporting arm and the driving support can gradually transfer the stress on the layer frame, the lifting of the layer frame can be easily and stably controlled, the convenience of use of a user can be improved, and the integral cost of the refrigerator can be reduced. And meanwhile, the limiting sliding chute at the bottom of the layer frame is matched with the rolling wheel in a sliding or rolling way, so that the rolling wheel is limited, the layer frame is stably erected on the supporting arm and can be lifted along with the rotation of the supporting arm, the structure of the layer frame is optimized, and the lifting stability of the layer frame is ensured.

Drawings

Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the liner and the shelf in fig. 1.

Fig. 3 is an enlarged schematic view of the area a in fig. 2.

Fig. 4 is a schematic structural view of the shelf and the mounting box in fig. 1.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a partial enlarged view of fig. 5.

Fig. 7 is a schematic view of the structure of the support mechanism and the driving mechanism in fig. 5.

Fig. 8 is a schematic view of the structure of the middle layer frame and the supporting arm in fig. 5.

Fig. 9 is an exploded view of the shelf of fig. 8.

Fig. 10 is a schematic view of the structure of the support arm and the support bracket of fig. 8.

Fig. 11 is a side view of fig. 10.

Fig. 12 is a B-B cross-sectional view of fig. 4.

Fig. 13 is a schematic view of the mounting box of fig. 12 with the inner wall panel removed.

Fig. 14 is a schematic view of the structure of fig. 13 in another state.

Fig. 15 is a schematic view of the driving mechanism in fig. 13.

Fig. 16 is a schematic view of the connection structure of the drive mechanism and the first support arm of fig. 13 in another view.

The reference numerals are explained as follows: 1. a case; 11. a refrigeration compartment; 12. a tank liner; 121. a biliary tendon; 2. a door body; 3. a layer rack; 31. a shelf; 32. a support frame; 321. a support part; 301. limiting sliding grooves; 322. a connection part; 302. a clamping groove; 303. the first clamping ribs; 304. a second clamping rib; 4. a mounting box; 41. an inner wall panel; 42. an outer wall panel; 411. a limit rib; 5. a support mechanism; 51. a first support arm; 511. a guide chute; 52. a second support arm; 53. a third support arm; 54. a linkage shaft; 55. a connecting rod; 56. a roller; 6. a driving mechanism; 61. a drive bracket; 611. a driving plate; 6111. a positioning groove; 612. a driving arm; 613. a rack; 614. a support shaft; 62. a handle; 63. a positioning block; 64. a driven gear; 65. an amplifying gear; 651. a first gear; 652. a second gear; 66. a transmission gear.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

With the improvement of the living standard of people, a refrigerator has become one of indispensable home appliances. In a large-capacity refrigerator, shelves are generally provided to facilitate layering of articles.

In the related art, for most refrigerators, the shelf position is fixed, and only a plurality of fixed positions can adjust the height of the shelf, and when the shelf position needs to be adjusted, the shelf position needs to be changed usually by cleaning up the articles on the shelf, which is very inconvenient. Some layer frame structures adopt a motor to drive the layer frame to move up and down, and the use aspect is that the cost of the whole layer frame structure is higher because the layer frame structure relates to the motor and other structures.

For convenience of description, unless specified otherwise, directions of up, down, left, right, front and rear are all referred to a state of the refrigerator when the refrigerator is in use, and a door body of the refrigerator is in front and a direction opposite to the door body is in rear.

Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention. Fig. 2 is a schematic structural view of the liner and the shelf 3 in fig. 1. Fig. 3 is an enlarged schematic view of the area a in fig. 2.

Referring to fig. 1 to 3, a refrigerator according to an embodiment of the present invention mainly includes a refrigerator body 1, a door 2, a shelf 3, a mounting box 4, a supporting mechanism 5 and a driving mechanism 6.

The box body 1 adopts a cuboid structure. A plurality of mutually separated refrigerating compartments 11 can be arranged in the box body 1, and each separated refrigerating compartment 11 can be used as an independent storage space, such as a freezing chamber, a refrigerating chamber, a temperature changing chamber and the like, so as to meet different refrigerating demands of freezing, refrigerating, changing temperature and the like according to different food types and store the food. The plurality of refrigeration compartments 11 may be arranged in a vertically spaced apart relationship, or in a laterally spaced apart relationship.

The box body 1 is internally provided with a box liner 12, and a refrigeration compartment 11 is formed in the box liner 12. It should be noted that a plurality of containers 12 may be provided. Only one refrigerating compartment 11 may be provided in the same container 12, or a plurality of refrigerating compartments 11 may be provided.

The door body 2 is provided at the front side of the cabinet 1 for opening and closing the refrigerating compartment 11. It is understood that the door body 2 may be provided in plurality and is provided in one-to-one correspondence with the refrigerating compartments 11. One door body 2 can also open and close a plurality of refrigeration compartments 11 at the same time.

Referring to fig. 2 and 3, the shelf 3 is movably disposed in the refrigeration compartment 11, i.e., the shelf 3 is movably disposed in the liner 12 and can move up and down along the liner 12. The shelf 3 is used for layering articles. It will be appreciated that a plurality of shelves 3 may be provided and arranged in a vertically spaced relationship.

Still referring to fig. 2 and 3, the mounting box 4 is fixedly mounted on the inner wall of the refrigeration compartment 11, i.e. the mounting box 4 is fixedly mounted on the inner wall of the liner 12. The two mounting boxes 4 are provided and are fixed on the left and right side walls of the liner 12 in a left and right opposite manner. The mounting boxes 4 are arranged below the layer frames 3 and can be used for respectively supporting two ends of the layer frames 3.

The mounting box 4 is provided with a receiving space (not shown) for mounting the supporting mechanism 5 and the driving mechanism 6.

Referring to fig. 3, in some embodiments, a liner rib 121 is protruding on an inner wall of the liner 12, and the mounting box 4 is fixed on the liner rib 121, so as to support the mounting box 4 and the layer frame 3 through the liner rib 121.

Fig. 4 is a schematic structural view of the layer stand 3 and the mounting box 4 in fig. 1. Fig. 5 is an exploded view of fig. 4. Fig. 6 is a partial enlarged view of fig. 5.

Referring to fig. 3 to 6, the mounting box 4 includes an inner wall panel 41 and an outer wall panel 42. The inner wall plate 41 and the outer wall plate 42 are arranged at a left-right interval, the outer wall plate 42 faces the inner wall of the refrigerating compartment 11, and the inner wall plate 41 faces the center of the refrigerating compartment 11. An accommodating space is formed between the inner wall plate 41 and the outer wall plate 42. The outer wall plate 42 and the inner wall plate 41 may be fixedly installed on the ribs 121 on the inner wall of the tank 12.

Referring to fig. 6, in conjunction with fig. 3, in some embodiments, a limiting rib 411 is protruding from the lower end of the inner wall plate 41. The limiting rib 411 can be clamped on the liner rib 121 of the liner 12, so that the inner wall plate 41 and the mounting box 4 are integrally clamped and fixed on the liner rib 121 of the liner 12, and the problem that the mounting box 4 and the layer frame 3 incline forwards and turn over can be effectively avoided.

Fig. 7 is a schematic structural view of the supporting mechanism 5 and the driving mechanism 6 in fig. 5.

Referring to fig. 5 to 7, the supporting mechanism 5 is disposed in the mounting box 4 and is used for supporting the shelf 3, and controlling the shelf 3 to lift above the mounting box 4, so as to realize the lifting function of the shelf 3 in the refrigeration compartment 11.

The support mechanism 5 includes a plurality of support arms. One end of the support arm is hinged to the inner wall of the mounting box 4 or directly to the inner wall of the refrigeration compartment 11. The other end of the support arm is supported at the bottom of the shelf 3 to support the shelf 3. Along with the rotation of the supporting arm, the layer frame 3 can move up and down relative to the mounting box 4, so that the layer frame 3 can be lifted in the refrigeration compartment 11.

Still referring to fig. 5-7, in some embodiments, the plurality of support arms includes a first support arm 51, a second support arm 52, and a third support arm 53. The top of each of the first, second and third support arms 51, 52 and 53 is provided with a roller 56. The respective rollers 56 are positioned on the same plane so that the shelf 3 is stably supported on the rollers 56.

The support mechanism 5 further includes a linkage shaft 54 connected between the first support arm 51 and the second support arm 52, and a link 55 connected between the second support arm 52 and the third support arm 53.

The first support arm 51 is disposed within one of the mounting boxes 4 and is adapted to be directly coupled to the drive mechanism 6. The first support arm 51 is rotatably coupled to the inner wall of the mounting box 4. The first supporting arms 51 may be provided in plurality, and the plurality of first supporting arms 51 are located in the same mounting box 4 and are arranged in parallel and spaced front and back. The plurality of first support arms 51 are each directly connected to the drive mechanism 6. The driving mechanism 6 and the plurality of first supporting arms 51 are located in the same mounting box 4, and are used for controlling the first supporting arms 51 to rotate, and further controlling the layer frame 3 to lift.

Referring still to fig. 5 to 7, the second support arm 52 is disposed in the other mounting box 4, and the second support arm 52 is rotatably connected to the inner wall of the mounting box 4 and is parallel to and opposite to the first support arm 51.

The linkage shaft 54 is disposed between the two mounting boxes 4, and one end of the linkage shaft 54 extends into one of the mounting boxes 4 to be connected with a first support arm 51. The other end of the linkage shaft 54 extends into the other mounting box 4 and is connected to the second support arm 52. The first support arm 51 can drive the second support arm 52 to rotate synchronously through the linkage shaft 54.

The third supporting arm 53 and the second supporting arm 52 are arranged in the same mounting box 4, and the third supporting arm 53 is rotatably connected to the inner wall of the mounting box 4 and is arranged in a front-back parallel interval with the second supporting arm 52.

The connecting rod 55 is provided in the mounting box 4 where the third support arm 53 and the second support arm 52 are located. One end of the link 55 is hinged with the second support arm 52, and the other end of the link 55 is hinged with the third support arm 53. The second support arm 52 can drive the third support arm 53 to rotate synchronously through the connecting rod 55.

The first support arm 51, the second support arm 52 and the third support arm 53 are matched through the linkage shaft 54 and the connecting rod 55, so that synchronous rotation can be realized. That is, the driving mechanism 6 is only required to be provided with a group and is directly connected with the first supporting arm 51, and the first supporting arm 51 is controlled to rotate, so that the first supporting arm 51, the second supporting arm 52 and the third supporting arm 53 can be simultaneously controlled to synchronously rotate, and the shelf 3 can stably rise and fall in the refrigeration compartment 11.

It will be appreciated that the driving mechanism 6 may be provided in two groups, respectively provided in the two mounting boxes 4, and that the second supporting arm 52 and the third supporting arm 53 are replaced by the first supporting arm 51.

Fig. 8 is a schematic structural view of the middle frame 3 and the support arm in fig. 5.

Referring to fig. 7 and 8, rollers 56 are provided on top of each of the first, second and third support arms 51, 52 and 53. The first, second and third support arms 51, 52 and 53 are supported at the bottom of the racking 3 by rollers 56 to support the racking 3. The first support arm 51, the second support arm 52 and the third support arm 53 are all disposed in parallel, so that the plurality of rollers 56 are located on the same horizontal plane, and thus the shelf 3 can be stably supported. Meanwhile, limit sliding grooves 301 extending along the front-back direction of the box body 1 are concavely arranged on two sides of the top of the layer frame 3, and the rollers 56 are connected in the limit sliding grooves 301 in a sliding or rolling mode, so that the layer frame 3 can be stably erected on the supporting arms, and the layer frame 3 is supported and driven to lift through the supporting arms.

Fig. 9 is an exploded structure view of the layer stand 3 of fig. 8. Fig. 10 is a schematic view of the structure of the support arm and the support bracket 32 of fig. 8. Fig. 11 is a side view of fig. 10.

Referring to fig. 9 and 10 in combination with fig. 1-3, in some embodiments, the shelf 3 includes a shelf 31 and a support 32. The shelf 31 has a plate-like structure and is disposed in the refrigerating compartment 11 in a lateral direction. The support 32 is provided in the refrigerating compartment 11 and extends in the front-rear direction of the cabinet 1. The two support frames 32 are provided and are provided at both lateral ends of the shelf 31. The support frame 32 serves to fix and reinforce the structure of the shelf 31 so as to fix the shelf 31 within the refrigerating compartment 11.

Referring to fig. 9 to 11, a side wall of the support frame 32 facing the shelf 31 is concavely provided with a clamping groove 302, and an end of the shelf 31 is inserted into the clamping groove 302. In some embodiments, the inner top surface of the clamping groove 302 is provided with a first clamping rib 303 in a protruding manner, the inner bottom surface of the clamping groove 302 is provided with a second clamping rib 304 opposite to the first clamping rib 303 in a protruding manner, and the first clamping rib 303 and the second clamping rib 304 extend along the front-back direction of the box body 1. The end of the shelf 31 is clamped between the first clamping rib 303 and the second clamping rib 304, so that the shelf 31 and the support frame 32 can be detachably connected, and meanwhile, the firmness of connection between the shelf 31 and the support frame 32 can be maintained. It will be appreciated that the support 32 may be integrally formed with the shelf 31 or may be detachably disposed at both ends of the shelf 31.

Referring still to fig. 9 to 11, the limiting chute 301 is concavely disposed on a side wall surface of the supporting frame 32, so as to slide or roll the roller 56 with the supporting frame 32. I.e., the roller 56 is slidably or rollably supported on the support frame 32 during rotation of the first, second and third support arms 51, 52, 53.

Referring to fig. 11 in combination with fig. 3, in some embodiments, the support 32 includes a support portion 321 and a connecting portion 322 protruding below the support portion 321. The clamping groove 302 is provided on a side wall surface of the supporting portion 321 facing the shelf 31, that is, the clamping groove 302 is concavely provided on an inner side surface of the supporting portion 321. The outer side surface of the support 321 is used to be closely attached to the side wall surface of the refrigeration compartment 11. The limiting chute 301 is concavely arranged on the side wall surface of the connecting portion 322.

In some embodiments, the limiting chute 301 is concavely disposed on a side wall surface of the connecting portion 322 facing away from the shelf 31, i.e., a side wall surface of the limiting chute 301 facing the inner side wall of the refrigeration compartment 11. Meanwhile, a sidewall surface of the connection portion 322 facing away from the shelf 31, that is, a sidewall surface of the connection portion 322 facing the refrigerating compartment 11 and an inner sidewall of the refrigerating compartment 11 have a space therebetween, and one end of the support arm can be extended into the space and connected to the roller 56 so that the support arm can be as close to the inner sidewall of the refrigerating compartment 11 as possible. The support arm is arranged in the mounting box 4, so that the width requirement of the mounting box 4 can be reduced, and the occupation of the mounting box 4 to the inner space of the refrigeration compartment 11 is further reduced.

Referring to fig. 3, in some embodiments, when the shelf 3 descends and abuts against the mounting box 4, the supporting portion 321 can abut against the top of the outer wall plate 42, and the connecting portion 322 can abut against the top of the inner wall plate 41, so that the shelf 3 can be stably supported on the mounting box 4, and the overall appearance of the shelf 3 is attractive.

On the mounting box 4, the top of the outer wall plate 42 is higher than the top of the inner wall plate 41, and the top of the outer wall plate 42 can cover the outer sides of the limit sliding groove 301 and the roller 56, so as to avoid exposing the support arm and the roller 56, and make the overall appearance of the shelf 3 attractive.

Fig. 12 is a B-B cross-sectional view of fig. 4. Fig. 13 is a schematic view of the mounting box 4 of fig. 12 with the inner wall plate 41 removed. Fig. 14 is a schematic view of the structure of fig. 13 in another state. Fig. 15 is a schematic diagram of the structure of the driving mechanism 6 in fig. 13.

Referring to fig. 12 to 15, the driving mechanism 6 mainly includes a driving bracket 61, a gear assembly, a handle 62 and a positioning block 63.

The drive bracket 61 is provided in the mounting box 4 and is slidable in the front-rear direction of the casing 1. The driving bracket 61 is connected with the first supporting arm 51, and when the driving bracket 61 slides along the front-back direction of the box body 1, the driving bracket 61 can drive the first supporting arm 51 to rotate, so that the height of the end part of the supporting layer frame 3 of the first supporting arm 51 is changed, and the layer frame 3 is controlled to lift in the refrigeration compartment 11.

Referring to fig. 13 to 15, the driving bracket 61 includes a driving plate 611, a driving arm 612 protruding from the driving plate 611, and a rack 613 disposed on the driving plate 611.

The driving plate 611 extends in the front-rear direction of the casing 1. The drive plate 611 is movably provided in the mounting case 4, and is slidable in the front-rear direction of the case 1 in the mounting case 4. It should be noted that a sliding groove (not shown) may be provided in the mounting box 4, and the driving plate 611 is limited to slide in the sliding groove, so that the movement of the driving plate 611 is more stable.

The driving plate 611 is provided with a positioning groove 6111, and the positioning groove 6111 is used for being matched with the positioning block 63, so that the driving plate 611 is limited in the mounting box 4, and the driving plate 611 is prevented from moving forwards and backwards. It is understood that a plurality of positioning grooves 6111 may be provided on the driving plate 611 and arranged at intervals in the front-rear direction. The plurality of positioning grooves 6111 can limit the driving plate 611 at different positions in the mounting box 4.

Still referring to fig. 13 to 15, a driving arm 612 is integrally formed on the driving plate 611, and the driving arm 612 is used to connect with the first supporting arm 51. When the driving plate 611 slides along the front-back direction of the case 1, the driving arm 612 can drive the first supporting arm 51 to rotate, and further drive the shelf 3 to lift. It should be noted that, in some embodiments, the driving arm 612 may be omitted, and the driving plate 611 is directly connected to the first supporting arm 51 and directly drives the first supporting arm 51 to rotate, so as to drive the shelf 3 to lift.

The driving arms 612 may be provided in plurality and arranged in a front-rear interval. Each driving arm 612 can be connected with a first supporting arm 51, that is, the driving arms 612 can drive the first supporting arms 51 to rotate synchronously, and the first supporting arms 51 support and control the lifting of the shelf 3, so that the shelf 3 is supported and lifted more stably.

Fig. 16 is a schematic view of the connection structure of the driving mechanism 6 and the first support arm 51 in fig. 13 in another view.

Referring to fig. 13 to 16, in some embodiments, a supporting shaft 614 is protruding from a side wall of the driving arm 612, and a guiding chute 511 extending along an axial direction of the first supporting arm 51 is provided on the first supporting arm 51, where the guiding chute 511 is in a strip shape. The support shaft 614 is slidably connected to the guide chute 511.

When the driving plate 611 slides in the front-rear direction of the case 1, the supporting shaft 614 on the driving arm 612 can slide in the guide chute 511 while driving the first supporting arm 51 to rotate in the forward or reverse direction.

Referring to fig. 13 and 14, when the driving plate 611 moves backward along the case 1 in the mounting box 4, the driving arm 612 can rotate the first supporting arm 51 and raise the shelf 3. When the driving plate 611 moves forward along the case 1 in the mounting box 4, the driving arm 612 can drive the first supporting arm 51 to rotate reversely and lower the shelf 3.

Referring to fig. 13 to 16, a rack 613 is integrally formed on the driving plate 611, and the rack 613 extends in a straight line in the front-rear direction of the case 1. The rack 613 is used for meshing transmission with the gear assembly, and thus can move back and forth in the front-rear direction of the case 1 in the mounting case 4 by controlling the driving plate 611 by the gear assembly.

Still referring to fig. 13 to 16, a gear assembly is disposed in the mounting box 4, one end of the gear assembly is engaged with a rack 613 on the driving plate 611, and the other end is in driving connection with the handle 62. The handle 62 rotates to drive the gear assembly to rotate, and then drives the driving plate 611 to slide back and forth along the front-back direction of the case 1 through the rack 613.

The handle 62 is rotatably connected in the refrigerating compartment 11 and rotatably connected to the outer wall of the mounting box 4. The rotating end of the handle 62 is in driving connection with the gear assembly and is in meshed transmission with the rack 613 through the gear assembly. The drive bracket 61 can move back and forth in the extending direction of the rack 613 when the handle 62 rotates, and thus can drive the first support arm 51 to rotate synchronously.

Referring to fig. 15 and 16, in some embodiments, the gear assembly includes a driven gear 64, an amplifying gear 65, and a transmission gear 66.

The driven gear 64 is rotatably coupled to the inner wall of the mounting case 4 and is drivingly coupled to the handle 62. When the handle 62 rotates, the driven gear 64 can be driven to rotate.

The amplification gear 65 is provided between the driven gear 64 and the rack 613, and the amplification gear 65 is used for amplifying the rotation range of the driven gear 64, further enlarging the movement stroke of the driving bracket 61 by matching the rack 613, further enlarging the rotation range of the first support arm 51, and enlarging the lifting range of the shelf 3.

The amplifying gear 65 includes a first gear 651 and a second gear 652 that are integrally formed and coaxially disposed. The outer diameter of the first gear 651 is greater than the outer diameter of the second gear 652. The first gear 651 is for meshing transmission with the rack 613, and the second gear 652 is for meshing transmission with the driven gear 64.

The amplifying gear 65 is provided in plurality, and the plurality of amplifying gears 65 are engaged with each other to realize multi-stage amplification of the rotation range of the driven gear 64. The amplifying gears 65 are meshed with each other through a first gear 651 with a larger outer diameter and a second gear 652 with a smaller outer diameter, and finally meshed with the rack 613 through the first gear 651, and meshed with the driven gear 64 through the second gear 652, so that the rotation range of the driven gear 64 is amplified in multiple stages, and further the linear movement stroke amplification of the rack 613 is realized. The plurality of amplifying gears 65 are engaged with the driven gear 64, so that the handle 62 can be rotated by a small angle, that is, the driving bracket 61 can be controlled to linearly move in a wide range, and the lifting height range of the shelf 3 can be widened.

It will be appreciated that only one of the amplifying gears 65 may be provided, in which case the first gear 651 of the amplifying gear 65 is in meshed communication with the rack 613 and the second gear 652 is in meshed communication with the driven gear 64.

The transmission gear 66 is provided between the amplification gear 65 and the driven gear 64, or between the amplification gear 65 and the amplification gear 65. The transmission gear 66 may be provided in plurality.

The transmission gear 66 is disposed between the amplifying gear 65 and the driven gear 64, and the transmission gear 66 is respectively meshed with the driven gear 64 and the second gear 652 of the amplifying gear 65, so as to realize meshing transmission between the amplifying gear 65 and the driven gear 64. And a transmission gear 66 disposed between the amplification gear 65 and the amplification gear 65, the transmission gear 66 being meshed with a first gear 651 of the amplification gear 65 adjacent to the driven gear 64 and with a second gear 652 of the amplification gear 65 adjacent to the rack 613 to achieve a meshed transmission between the amplification gear 65 and the amplification gear 65.

Still referring to fig. 13 and 14, the positioning block 63 is disposed in the mounting box 4, and the positioning block 63 is configured to be clamped with the positioning slot 6111 to limit the driving bracket 61 and prevent the layer frame 3 from descending. The positioning block 63 is rotatably connected to the inner wall of the mounting box 4. The positioning grooves 6111 on the driving plate 611 are respectively used for being clamped with the positioning blocks 63, so that the driving bracket 61 is clamped at different positions in the mounting box 4, and the shelves 3 are further kept at different height positions.

Referring to fig. 13 and 14, when the positioning groove 6111 moves linearly under the positioning block 63 along with the driving plate 611 during the lifting process of the shelf 3, the positioning block 63 can be partially inserted into the positioning groove 6111 by controlling the rotation of the positioning block 63. At this time, when the shelf 3 descends, the driving plate 611 moves reversely, and the end wall of the positioning slot 6111 can be clamped on the positioning block 63, so that the driving plate 611 is prevented from moving, and the height position of the shelf 3 is further fixed.

In some embodiments, the positioning block 63 is provided with one or more bayonets (not labeled in the figures) for being clamped with the end wall of the positioning slot 6111, so that the positioning block 63 is stably clamped on the driving plate 611.

Based on the technical scheme, the embodiment of the invention has at least the following advantages and positive effects:

in the refrigerator of the embodiment of the invention, the driving bracket 61, the supporting arm and the layer frame 3 are matched, the forward and backward movement of the driving bracket 61 is utilized to further control the rotation amplitude of the supporting arm, and the roller 56 is utilized to support and adjust the height of the layer frame 3 in the refrigeration compartment 11, so that the function of adjusting the lifting of the layer frame 3 is realized. Wherein, through drive support 61 and support arm cooperation, the linear motion of drive support 61 converts the rotary motion of support arm into, at last through gyro wheel 56 with the rotary motion of support arm conversion layer frame 3's elevating movement, be favorable to support arm and drive support 61 to gradually transmit the atress to layer frame 3 to can easily, stably control layer frame 3 and go up and down, be favorable to improving user's convenience of use, be favorable to reducing refrigerator holistic cost. Simultaneously, the roller 56 is limited by utilizing the sliding or rolling fit of the limiting sliding groove 301 at the bottom of the layer frame 3 and the roller 56, so that the layer frame 3 is stably erected on the supporting arm and can be lifted along with the rotation of the supporting arm, the structure of the layer frame 3 is favorably optimized, and the lifting stability of the layer frame 3 is ensured.

While the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (9)

1. A refrigerator, comprising:

the box body is internally provided with a refrigeration compartment;

the layer rack is arranged in the refrigerating compartment;

the support arm is arranged below the layer frame; one end of the supporting arm is hinged in the refrigerating compartment, and the other end of the supporting arm is provided with a roller; the roller is supported at the bottom of the layer frame;

the driving bracket is movably arranged below the layer frame and can move along the front-back direction of the box body; the driving bracket is connected with the supporting arm and is used for driving the supporting arm to rotate around the hinge shaft of the supporting arm;

the bottom of the layer rack is concavely provided with a limiting chute extending along the front-back direction of the box body, and the roller is slidably or rollingly connected in the limiting chute so as to support and drive the layer rack to lift;

the refrigerator further comprises an installation box arranged on the side wall of the refrigeration compartment, and the driving bracket is movably arranged in the installation box;

the driving bracket comprises a driving plate extending along the front-back direction of the box body and a driving arm protruding upwards on the driving plate; the driving plate is movably arranged in the mounting box and can slide in the mounting box along the front-back direction of the box body; the driving arm is connected with the supporting arm and can drive the supporting arm to rotate;

the driving plate is provided with a rack extending along the front-back direction of the box body; a gear assembly is arranged in the mounting box, and a handle is rotatably connected to the outer wall of the mounting box; the rotating end of the handle is in transmission connection with the gear assembly and is in meshed transmission connection with the rack through the gear assembly;

when the handle rotates forwards or reversely, the handle can drive the driving plate to slide in the front-back direction of the box body in the mounting box.

2. The refrigerator as claimed in claim 1, wherein the shelf includes a shelf and a support frame detachably provided on the shelf;

the shelf is of a plate-shaped structure and is transversely arranged in the refrigerating compartment;

the supporting frame is arranged in the refrigerating compartment and extends along the front-back direction of the box body; the two support frames are arranged and are respectively arranged at two transverse end parts of the shelf; and the limiting chute is arranged on the supporting frame.

3. The refrigerator as claimed in claim 2, wherein the supporting frame includes a supporting portion and a connecting portion protruding below the supporting portion;

a clamping groove is concavely formed in the side wall surface of the supporting part facing the shelf, and the end part of the shelf is inserted into the clamping groove;

the limiting chute is concavely arranged on the side wall surface of the connecting part.

4. The refrigerator of claim 3, wherein the limit chute is concavely arranged on a side wall surface of the connecting part, which is opposite to the shelf;

a space is arranged between the side wall surface of the connecting part, which is opposite to the shelf, and the inner side wall of the refrigeration compartment; the ends of the support arms extend into the space and are connected to the rollers.

5. The refrigerator as claimed in claim 3, wherein the inner top surface of the clamping groove is provided with a first clamping rib in a protruding manner, and the inner bottom surface of the clamping groove is provided with a second clamping rib opposite to the first clamping rib in a protruding manner; the end part of the shelf is clamped between the first clamping rib and the second clamping rib.

6. The refrigerator as claimed in claim 3, wherein the installation boxes are provided in two, and are respectively fixed on the left and right side walls of the refrigerating compartment;

the two supporting frames are respectively erected on one mounting box;

the support arm is arranged in the mounting box, and one end of the support arm is rotationally connected to the inner wall of the mounting box.

7. The refrigerator as claimed in claim 6, wherein the mounting case includes an inner wall plate and an outer wall plate provided at inner and outer intervals, a receiving space is formed between the outer wall plate and the inner wall plate, and the supporting arm and the driving bracket are both provided in the receiving space;

when the shelf descends relative to the mounting box, the supporting portion can abut against the top of the outer wall plate, and meanwhile the connecting portion can abut against the top of the inner wall plate.

8. The refrigerator of claim 7 wherein the top of the outer wall plate is higher than the top of the inner wall plate, and the top of the outer wall plate can cover the outside of the limit chute.

9. The refrigerator as claimed in claim 1, wherein the supporting arm is provided with a guide chute extending along an axial direction thereof, and the guide chute is in a long strip shape;

the side wall of the driving arm is convexly provided with a supporting shaft which is connected in the guide chute in a sliding way;

when the driving plate slides along the front-back direction of the box body, the supporting shaft can slide in the guide sliding groove and drive the supporting arm to rotate.