CN107367122B

CN107367122B - Refrigerator with a door

Info

Publication number: CN107367122B
Application number: CN201710521591.0A
Authority: CN
Inventors: 杨发林; 徐志国; 郑晓磊; 程莎莎
Original assignee: Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2019-12-27
Anticipated expiration: 2037-06-30
Also published as: CN107367122A

Abstract

The invention provides a refrigerator, which comprises a refrigerator body and a storage box arranged in the refrigerator body, wherein a slideway and a sliding rod which are matched with each other are arranged between the refrigerator body and the storage box, a first roller shaft is arranged at the same side of the sliding rod, and a first roller is sleeved on the first roller shaft; at least the lower rail is provided with a lower rail abutting surface which is contacted with the first roller wheel and is an inclined surface which extends from the storage box in the vertical direction in the drawing process of the storage box; the first roller shaft is arranged in parallel to the inclined plane of the lower track abutting surface; in the process of drawing the storage box in the horizontal direction, the first roller is continuously tangent to the inclined plane formed on the lower rail abutting surface. The refrigerator can avoid the phenomenon of unsmooth sliding caused by the left-right shaking of the storage box during pushing and pulling.

Description

Refrigerator with a door

Technical Field

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

Background

A refrigerator, as a container capable of keeping food or other articles in a constant low-temperature cold state, has become one of essential household appliances in modern households. The refrigerator generally comprises a refrigerating chamber and a freezing chamber which are separated from each other, and the refrigerating chamber or the freezing chamber can be internally provided with a drawable storage box for respectively storing articles to be stored at different temperatures.

Under the normal condition, a slideway and a sliding rod which are matched with each other and a roller wheel which is matched with the slideway and/or the sliding rod are arranged between the storage box and the box body so as to facilitate the storage box to be drawn back and forth from a compartment of the refrigerator; the sliding track of the existing sliding rod is a horizontal track, and the storage box horizontally and smoothly runs in the pushing and pulling process. However, since the inner container forming the refrigerator body needs to be foamed in the manufacturing process, the dimension of the side wall of the refrigerator body after foaming is difficult to control accurately, and the deviation exists from the theoretical dimension, so that a larger gap is formed between the storage box and the side wall of the refrigerator; under this kind of condition, in case receive the ascending power of left and right sides in the storing box pull in-process, will not smooth operation, one of them lateral wall of refrigerator that the storing box will be close to it in left and right sides orientation to the circumstances that the jamming, push-and-pull are not smooth and easy appears in the storing box in the pull process takes place.

Disclosure of Invention

The invention aims to provide a refrigerator; the refrigerator includes: the box body and the storage box arranged in the box body are provided with a slideway and a sliding rod which are matched with each other, a first roller shaft arranged at the same side of the sliding rod and a first roller sleeved on the first roller shaft, wherein the sliding rod, the first roller and the slideway are matched with each other to drive the storage box to be drawn back and forth in the box body;

the slideway is provided with a lower rail matched with the first roller, and the lower rail is provided with a lower rail abutting surface arranged close to the first roller;

at least in the drawing process of the storage box, the lower rail abutting surface which is in contact with the first roller is arranged to be an inclined surface which extends from the storage box in the vertical direction;

the first roller shaft is arranged in parallel to the inclined plane of the lower track abutting surface;

in the process of drawing the storage box in the horizontal direction, the first roller is continuously tangent to an inclined plane formed on the lower rail abutting surface.

As a further improvement of an embodiment of the present invention, the slide rail is fixedly installed on an inner side wall of the box body, the slide bar is fixedly installed on an outer wall of the storage box,

the sliding rod is provided with a tail end arranged close to the rear wall of the storage box and a front end arranged opposite to the tail end;

the first roller shaft is embedded at the tail end of the sliding rod.

As a further improvement of an embodiment of the present invention, the refrigerator further includes: the first roller carrier is matched with the first roller for use;

the tail end of the sliding rod is provided with a first groove, one side wall of the first groove is provided with a first accommodating part,

the first roller frame includes: the support main body is embedded in the first groove, the embedding part is arranged on the outer side wall of the support main body and matched with the first accommodating part, the second groove is formed in the direction from the support main body to the lower rail abutting surface of the slide way, the clamping holes are symmetrically formed in the side wall of the second groove close to one side of the storage box and the corresponding side wall of the second groove, and the diameter of each clamping hole is equal to the diameter of the axial section of the first roller shaft;

the first roller shaft is erected in the two symmetrically arranged clamping holes, and the first roller part is movably arranged in the second groove.

As a further improvement of an embodiment of the present invention, the first accommodating portion is a through hole or a groove opened on a sidewall of the first groove,

the embedded part is a boss arranged on the outer side wall of the support main body;

an opening is formed in the side, close to the top wall of the second groove, of any clamping hole so as to communicate the clamping hole with the top wall of the second groove; the width of the opening close to the clamping hole is smaller than the diameter of the clamping hole, and the width of the opening close to the top wall of the second groove is larger than or equal to the diameter of the clamping hole.

As a further improvement of an embodiment of the present invention, the entire lower rail abutting surface is provided as an inclined surface extending in the vertical direction from the storage box.

As a further improvement of an embodiment of the present invention, the lower rail abutting surface includes: the first abutting surface is provided with a tail end arranged close to the rear wall of the box body and a front end arranged opposite to the tail end;

a second abutting surface extending from the end of the first abutting surface, a third abutting surface extending from the other end of the second abutting surface and a fourth abutting surface extending from the other end of the third abutting surface;

the first abutting surface and the third abutting surface extend smoothly from the front and back horizontal directions;

the second abutting surface extends obliquely from the end part shared by the second abutting surface and the first abutting surface in the front-back direction and extends towards the obliquely lower direction;

the fourth abutting surface extends vertically and upwards from the end part shared by the fourth abutting surface and the third abutting surface;

in an initial state, the storage box is accommodated in the box body, and the first roller is tangent to the third abutting surface and the fourth abutting surface at the same time.

As a further improvement of an embodiment of the present invention, the slide rail has an upper rail disposed corresponding to the lower rail thereof, the upper rail of the slide rail has an upper rail abutting surface disposed adjacent to the slide bar,

the sliding rod is provided with an upper track abutting surface opposite to a lower track abutting surface of the sliding rod, and an abutting table is arranged above the upper track abutting surface and corresponds to the position of the first roller;

under the initial state, the butt joint platform with the last track of slide supports the holding surface separation setting, works as storing box is at the pull in-process, and its front end receives the dead weight effect downward sloping to begin, the butt joint platform lasts the last track of butt joint slide and supports the holding surface and continuously slides forward, first gyro wheel breaks away from the lower track of slide supports the holding surface.

As a further improvement of an embodiment of the present invention, a stopper is provided at a front end of the slide to stop the first roller from sliding out of the slide.

As a further improvement of an embodiment of the present invention, the stopper includes: the second roller shaft and a second roller sleeved on the second roller shaft;

the sliding rod is provided with a lower track abutting surface matched with the second roller, and the lower track abutting surface is an inclined surface extending from the storage box in the vertical direction;

the second roller shaft is arranged in parallel to the inclined plane of the lower rail abutting surface;

in the drawing process of the storage box, the second roller is continuously tangent to the inclined surface formed on the butt surface of the lower rail.

As a further improvement of an embodiment of the present invention, the lower rail abutment surface includes:

the first abutting surface is provided with a tail end arranged close to the rear wall of the box body and a front end arranged opposite to the tail end;

the second abutting surface extends from the front end of the first abutting surface, the third abutting surface extends from the other end of the second abutting surface, the fourth abutting surface extends from the other end of the third abutting surface, and the fifth abutting surface extends from the tail end of the first abutting surface;

the first abutting surface extends smoothly from the front-back horizontal direction;

the second abutting surface extends obliquely in the front-back direction from the end part shared by the second abutting surface and the first abutting surface, and extends towards the oblique upper direction;

the third abutting surface is an arc-shaped surface, the storage box is contained in the box body in an initial state, and the second roller is tangent to the second abutting surface and the third abutting surface at the same time;

the fourth abutting surface is a right-angle connecting surface and is used for preventing the second roller from sliding out of the preset path of the slide bar;

the fifth abutting surface extends obliquely in the front-back direction from the end part shared by the fifth abutting surface and the first abutting surface, and extends obliquely downwards;

when the second roller is tangent to the first abutting surface and the fifth abutting surface at the same time, the storage box is drawn out from the box body to the maximum state.

Compared with the prior art, the invention has the technical effects that: according to the refrigerator, the matching surfaces of the sliding rail and the sliding rod which are arranged between the storage box and the refrigerator body are arranged to be inclined surfaces which extend in the vertical direction, and the roller shafts corresponding to the rollers matched with the sliding rail and the sliding rod are arranged in parallel to the inclined surfaces, so that the gravity center of the storage box automatically aligns to the middle position of the sliding rail under the action of gravity in the drawing process of the storage box along the refrigerator body, the acting force generated by people during pushing and pulling can be counteracted by the reaction force generated by the rollers and the sliding rail and the sliding rod which are matched with the rollers, and the phenomenon of unsmooth sliding caused by left and right shaking of the storage box during pushing and pulling is avoided.

Drawings

FIG. 1 is a partial perspective view of a refrigerator according to the present invention;

fig. 2 is a perspective view of the storage box of fig. 1 in a pulled-out state.

Fig. 3 is a partially exploded schematic view of a refrigerator according to a first embodiment of the present invention;

FIG. 4A is a schematic view of the first pulley of FIG. 3;

FIG. 4B is a schematic view of the structure of the chute of FIG. 3;

FIG. 4C is a schematic view of the storage case of FIG. 3;

fig. 4D is a schematic sectional view of the refrigerator according to the first embodiment of the present invention, taken along the direction a-a in fig. 1.

Fig. 5 is a partially exploded schematic view of a refrigerator according to a second embodiment of the present invention;

FIG. 6A is a schematic view of the pulley block arrangement of FIG. 5;

FIG. 6B is a schematic view of the structure of the chute of FIG. 5;

FIG. 6C is a schematic view of the storage case of FIG. 5;

fig. 6D is a schematic sectional view of a refrigerator according to a second embodiment of the present invention, taken along a-a direction in fig. 1.

Fig. 7 is a partially exploded schematic view of a refrigerator according to a third embodiment of the present invention;

FIG. 8A is an exploded view of the roller and the roller seat of FIG. 7;

FIG. 8B is a schematic view of the structure of the chute of FIG. 7;

FIG. 8C is a schematic view of the storage compartment of FIG. 7;

fig. 8D is a schematic sectional view of a refrigerator according to a third embodiment of the present invention, taken along a-a direction in fig. 1.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

In the following embodiments, the terms "front", "rear", "upper", "lower", "left" and "right" do not denote absolute structural or functional relationships, but are merely used for clarity and convenience of description; also, in various embodiments, the same reference numbers or designations may be used and do not denote any structural or functional relationship;

in addition, in the following embodiments, a plurality of embodiments are presented, in which components having the same structure are represented by the same characters and the same reference numerals, and different components may be represented by the same characters, but they are distinguished by different reference numerals to make the solution of the present invention clear.

The refrigerator comprises a box body and a storage box arranged in the box body, wherein a slide rail and a slide rod which are matched with each other are arranged between the inner side wall of the box body and the outer side wall of the storage box, a rotating shaft is arranged on the same side of the slide rod, and a sliding wheel, a pulley block or a roller wheel is sleeved on the rotating shaft, and the slide rod, the sliding wheel or the pulley block and the slide rail are matched with each other to drive the storage box to be drawn back and forth in the box body; preferably, the front end of the slideway (near the open side) is further provided with a stop to stop the sliding wheel or pulley block from sliding out of the slideway, and correspondingly, the stop may also be constituted by a sliding wheel or pulley block or roller, as will be described in detail below.

Correspondingly, the slide way is arranged on one of the outer side wall of the storage box and the inner side wall of the box body, and the slide rod is arranged on the other of the outer side wall of the storage box and the inner side wall of the box body.

Referring to fig. 1 to 2, the refrigerator of the present invention includes a cabinet 10 and a storage box 20 installed in the cabinet 10. The cabinet 10 includes an opening side to which a refrigerator door (not shown) is disposed, left and right sidewalls 11 and 12 respectively disposed at both sides of the opening side, and a rear wall 13 connecting the left and right sidewalls 11 and 12 and disposed opposite to the opening side.

The box body 10 is characterized in that slide rails 30 are respectively and fixedly installed on the left side wall 11 and the right side wall 12 of the box body 10, and slide bars 40 which are matched with the slide rails 30 to drive the storage box 20 to be drawn back and forth in the box body 10 are correspondingly arranged on the two outer side walls of the storage box 20.

As shown in fig. 3 to fig. 4A, 4B, 4C, and 4D, the refrigerator according to the first embodiment of the present invention further includes: the first rotating shaft 51 is arranged on the same side as the sliding rod 40, and the first sliding wheel 52 is sleeved on the first rotating shaft 51 and rotates by taking the first rotating shaft 51 as a fulcrum in the process of drawing the storage box along the box body, wherein the outer contour of the first sliding wheel 52 is in a truncated cone shape.

In an embodiment of the present invention, the storage box 20 is a container with an upper opening and four side frames 21 standing on the upper side for placing articles. The sliding rod 40 and the first rotating shaft 51 are disposed on outer side walls of two oppositely disposed frames 21 of the storage box 20.

In this embodiment, the first rotating shaft 51 (not specifically shown) is in a screw shape, and includes a screw cap, a smooth screw rod vertically extending from the center of the screw cap, and a spiral end portion formed at an end of the screw rod away from the screw cap, and a screw hole matching with the spiral end portion of the first rotating shaft 51 is provided at a corresponding position of the side wall of the storage box 20 or the sliding rod 40; the diameter of the central hole of the first sliding wheel is equal to the outer diameter of the screw, during the installation process, the first sliding wheel 52 is firstly sleeved on the smooth screw of the first rotating shaft 51, then the spiral end part of the first sliding wheel is installed in the screw hole in a matching manner, and the first rotating shaft 51 is movably fixed on the side wall of the storage box 20 through the matching of the screw cap of the first sliding wheel.

Preferably, the sliding rod 40 has a tail end disposed adjacent to the rear wall of the storage box and a front end disposed opposite to the tail end; the first rotating shaft 51 is disposed at an end of the slide bar 40.

Preferably, the end of the first sliding wheel 52 with a larger axial cross section is arranged close to the storage box 20, so as to facilitate the installation and the setting of the specific structure of the slideway 30 and the sliding rod 40, which will be described in detail below.

In a preferred embodiment of the present invention, in order to ensure that the storage box 20 better matches with the first sliding wheel 52 to move during the drawing process, the sliding rail 30 has an upper rail and a lower rail matching with the first sliding wheel 52, and the upper rail and the lower rail respectively have an upper rail abutting surface 31 and a lower rail abutting surface 32 which are arranged adjacent to the first sliding wheel 52.

Preferably, at least the upper rail and the lower rail contact the upper rail contact surface 31 and the lower rail contact surface 32 of the first sliding wheel 52 in the drawing process of the storage box, and the upper rail contact surface and the lower rail contact surface are inclined surfaces extending from the storage box in the up-down direction; in the process of drawing the storage box, the edges of each axial section of the first sliding wheel 52 are all tangent to the upper rail abutting surface 31 and the lower rail abutting surface 32 in a segmented and continuous manner.

Preferably, for the convenience of manufacturing process, the upper rail abutting surface 31 and the lower rail abutting surface 32 are all provided as inclined surfaces extending from the storage box in the up-down direction.

In a specific embodiment of the present invention, the inclination angle of the inclined surface ranges from 10 degrees to 30 degrees, for example: 20 degrees.

In the refrigerator of the first embodiment, the first rotating shaft 51 is horizontally disposed, and an angle formed between the side wall of the first sliding wheel and the first rotating shaft 51 is set to be the same as an inclination angle of the inclined surface.

In a preferred embodiment of the present invention, the lower rail abutting surface 32 includes: a first abutting surface 321, wherein the first abutting surface 321 has a tail end arranged near the rear wall of the box body and a front end arranged opposite to the tail end; a second abutting surface 322 extending from the end of the first abutting surface 321, a third abutting surface 323 extending from the other end of the second abutting surface 322, and a fourth abutting surface 324 extending from the other end of the third abutting surface 323; the first abutting surface 321 and the third abutting surface 323 smoothly extend from the front-back horizontal direction; the second abutting surface 322 extends obliquely from the end portion shared by the first abutting surface 321 in the front-back direction and extends obliquely downward; the fourth abutting surface 324 extends vertically and upwards from the end shared by the third abutting surface 323; in the initial state, the storage box 20 is accommodated in the box body 10, and the first sliding wheel 52 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time.

In a preferred embodiment of the present invention, the front end (near the open side) of the slide 30 is further provided with a stopper to stop the first sliding wheel 52 from sliding out of the slide 30, the stopper comprising: the structure of the second sliding wheel 54 is the same as that of the first sliding wheel 52, in the present embodiment, the outer contour of the second sliding wheel 54 is also truncated cone-shaped, and the end with a larger axial cross section is disposed near the inner side of the slide way 30.

Certainly, the first rotating shaft 51 and the second rotating shaft 53 may further be sleeved with a gasket (not shown) and other components for fixing the positions of the first sliding wheel 52 and the second sliding wheel 54, which will not be described in detail herein.

In this embodiment, the second rotating shaft 53 and the second sliding wheel 54 are fitted to the front end of the lower rail of the slide way 30, a receiving hole (not shown) is formed in the front end of the lower rail of the slide way 30, the second sliding wheel 54 is fitted to the second rotating shaft 53, and then the second rotating shaft 53 and the second sliding wheel 54 are integrally fitted into the receiving hole by interference fit with each other through the second rotating shaft 53, so as to fix the positions of the second rotating shaft 53 and the second sliding wheel 54.

Preferably, the sliding rod 40 has a lower rail contact surface 41 engaged with the second sliding wheel 54, and the lower rail contact surface 41 is an inclined surface extending from the storage box in the vertical direction; in the process of drawing the storage box, the edge of each axial section of the second sliding wheel 54 is always tangent to the lower rail abutting surface 41.

In this specific example, the lower rail abutment surface 41 includes: a first abutting surface 411, wherein the first abutting surface 411 is provided with a tail end arranged close to the rear wall of the box body 10 and a front end arranged opposite to the tail end; a second abutting surface 412 extending from the front end of the first abutting surface 411, a third abutting surface 413 extending from the other end of the second abutting surface 412, a fourth abutting surface 414 extending from the other end of the third abutting surface 413, and a fifth abutting surface 415 extending from the tail end of the first abutting surface 411; the first abutting surface 411 extends smoothly from the front-back horizontal direction; the second contact surface 412 extends obliquely in the front-rear direction from the end portion common to the first contact surface 411, and extends obliquely upward; the third abutting surface 413 is an arc surface, in an initial state, the storage box 20 is accommodated in the box body 10, and the second sliding wheel 54 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time; the fourth abutting surface 414 is a right-angle connecting surface for preventing the second sliding wheel 54 from sliding out of the predetermined path of the sliding bar 40; the fifth contact surface 415 extends obliquely in the front-rear direction from the end portion common to the first contact surface 411, and extends obliquely downward; when the second sliding wheel 54 is tangent to the first abutting surface 411 and the fifth abutting surface 415 at the same time, the storage box 20 is drawn out from the box body 10 to the maximum state.

In the refrigerator according to the first embodiment of the present invention, in the initial state, the storage box 20 is accommodated in the refrigerator body 10, the first sliding wheel 52 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time, and the second sliding wheel 54 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time.

In the process that the storage box 20 is drawn out from the box body 10, the first sliding wheel 52 slides forwards along the slideway 30, meanwhile, the second sliding wheel 54 slides backwards relatively along the sliding rod 40, the first sliding wheel 52 is sequentially tangent to the second abutting surface 322 and the first abutting surface 321, after sliding a distance past the first abutting surface 321, the front end of the storage box 20 inclines downwards under the action of self weight, and meanwhile, the second sliding wheel 54 is tangent to the upper rail abutting surface 31 and slides forwards continuously.

Correspondingly, in the process that the storage box 20 is drawn out from the box body 10, the second sliding wheel 54 is sequentially tangent to the second abutting surface 412 and the first abutting surface 411; when the second sliding wheel 54 reaches and is tangent to the fifth abutting surface 415, the fifth abutting surface 415 prevents the second sliding wheel 54 from sliding backwards, meanwhile, the second sliding wheel 54 abuts against the first sliding wheel 52 and blocks the first sliding wheel 52 from sliding forwards, and at this time, the storage box 20 is drawn out of the box body 10 to the maximum.

In the process of pushing the storage box 20 into the box body 10 from the outside of the box body 10, the operation principle is similar to the above process, and thus further description of the process is omitted.

In the refrigerator provided by the first embodiment of the invention, in the sliding process of the first sliding wheel and the second sliding wheel relative to the slideway and the sliding rod, because the first sliding wheel and the second sliding wheel are both in a cone frustum shape, and meanwhile, the sliding surface matched with the first sliding wheel and the second sliding wheel is arranged to be matched with the running slope of the first sliding wheel and the second sliding wheel, the gravity center of the storage box is automatically aligned to the middle position of the slideway under the action of gravity in the pulling process of the storage box along the box body, and the acting force generated by people in the pushing and pulling process can be offset by the reacting force generated by the sliding wheels and the slideway and the sliding rod matched with the sliding wheels, so that the unsmooth sliding phenomenon caused by the left and right shaking generated in the pushing and pulling process of the storage box is avoided.

Referring to fig. 5, 6A, 6B, 6C, and 6D, a refrigerator according to a second embodiment of the present invention further includes: the first pulley shaft 61 is disposed on the same side as the sliding rod 40, and the first pulley block 62 is sleeved on the first pulley shaft 61 and rotates around the first pulley shaft 61 as a pivot in the process of drawing the storage box 20 along the box body, and the first pulley block 62 includes: the first pulley shaft 61 is sleeved with at least two pulleys which are coaxially arranged, and the diameters of the adjacent pulleys are different.

In the specific embodiment of the present invention, when a plurality of pulleys are coaxially arranged, it is only necessary to ensure that the diameters of adjacent pulleys are different, that is, the plurality of pulleys may be arranged in sequence from small to large, or may be arranged in a first small, second large, and third small manner, which is not described in detail herein;

in a preferred embodiment of the present invention, the diameters of the plurality of pulleys become larger in order along the axial direction thereof, and the difference between the diameters of the adjacent pulleys is the same.

In a specific implementation of the present invention, the number of the pulleys in the first pulley block 62 is two, and the two pulleys are respectively a first pulley 621 and a second pulley 622, and the diameter of the first pulley 621 is greater than the diameter of the second pulley 622.

In this embodiment, the storage box 20 is a container with an opening at the upper part and a frame 21 vertically arranged at four sides for placing articles. The sliding rod 40 and the first pulley shaft 61 are disposed on outer side walls of two oppositely disposed frames 21 of the storage box 20. The sliding rod 40 is provided with a tail end arranged close to the rear wall of the storage box 20 and a front end arranged opposite to the tail end; the first pulley shaft 61 is disposed at an end of the slide bar 40.

In this embodiment, the structure and the installation position of the first pulley shaft 61 are the same as those of the first rotating shaft 51 in the first embodiment, and therefore detailed description thereof is omitted.

Preferably, the first pulley 621 is disposed near the storage box 20, so as to facilitate installation and setting of specific structures of the slide 30 and the slide bar 40, which will be described in detail below.

In a preferred embodiment of the present invention, in order to ensure that the storage box 20 better matches the first pulley block 62 to move during the drawing process, the sliding track 30 has an upper track and a lower track matching the first pulley block 62, and the upper track and the lower track respectively have an upper track abutting surface 31 and a lower track abutting surface 32 disposed adjacent to the first pulley block 62.

In the specific embodiment of the present invention, the slide way 30 has two structures, wherein in one embodiment, the structure of the slide way 30 is the same as that of the slide way 30 in the first embodiment, that is, at least the upper rail and the lower rail are arranged as inclined surfaces extending from the upper direction to the lower direction of the storage box 20, and the upper rail abutting surface 31 and the lower rail abutting surface 32 contacting with the first pulley block 62 are arranged in the process of drawing the storage box 20; in the drawing process of the storage box, the edges of all axial sections of the first pulley block 62 are segmented and continuously tangent to the upper rail abutting surface 31 and the lower rail abutting surface 32. Preferably, for the convenience of manufacturing process, the upper rail abutting surface 31 and the lower rail abutting surface 32 are all provided as inclined surfaces extending from the storage box in the up-down direction. The difference between this way and the slideway in the refrigerator of the first embodiment is the matching relationship between the first pulley block 62 and the slideway 30, in this embodiment, during the drawing process of the storage box 20, only one edge of the axial section of each pulley is tangent to the upper rail abutting surface 31 and the lower rail abutting surface 32 in a segmented and continuous manner, that is, the adjacent edges of the axial sections of the first pulley 621 and the second pulley 622 are tangent to the upper rail abutting surface 31 and the lower rail abutting surface 32 in a segmented and continuous manner.

In a specific embodiment of the present invention, the inclination angle of the inclined surface ranges from 10 degrees to 30 degrees, for example: 20 degrees. In the refrigerator according to the second embodiment, the first pulley shaft 61 is horizontally disposed, and an included angle between a line connecting edges of the axial cross-sections on the same side of the first pulley 621 and the second pulley 622 and the first pulley shaft 61 is the same as an inclination angle of the inclined surface.

In another embodiment, (this embodiment is not shown in the figures) the upper rail abutting surface and the lower rail abutting surface are both provided as stepped surfaces formed from the up-down direction of the storage box; in the drawing process of the storage box, each pulley is segmented and continuously tangent to the upper rail abutting surface and the lower rail abutting surface. In this embodiment, the height difference of the stepped surface is equal to the difference in radius between the adjacent pulleys corresponding thereto.

Accordingly, in the above embodiments, the lower rail abutting surface 32 includes: a first abutting surface 321, wherein the first abutting surface 321 has a tail end arranged near the rear wall of the box body and a front end arranged opposite to the tail end; a second abutting surface 322 extending from the end of the first abutting surface 321, a third abutting surface 323 extending from the other end of the second abutting surface 322, and a fourth abutting surface 324 extending from the other end of the third abutting surface 323; the first abutting surface 321 and the third abutting surface 323 smoothly extend from the front-back horizontal direction; the second abutting surface 322 extends obliquely from the end portion shared by the first abutting surface 321 in the front-back direction and extends obliquely downward; the fourth abutting surface 324 extends vertically and upwards from the end shared by the third abutting surface 323; in the initial state, the storage box 20 is accommodated in the box 10, and each pulley of the first pulley block 62 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time.

In a preferred embodiment of the present invention, the front end of the slideway 30 (near the open side) is further provided with a stop to stop the first pulley block 62 from sliding out of the slideway 30.

In practical applications, the structure of the stopper is various, for example: a protrusion of a regular shape, a circular protrusion, a triangular protrusion, a truncated pyramid protrusion, and a second sliding wheel structure in the refrigerator of the first embodiment; and will not be described in detail herein. In a specific embodiment of the present invention, the stopper includes: a second pulley shaft 63, and a second pulley block 64 sleeved on the second pulley shaft 63, wherein the structure of the second pulley block 64 is the same as that of the first pulley block 62, that is: the second pulley block 64 includes: the at least two pulleys are sleeved on the second pulley shaft 63 and are coaxially arranged, and the diameters of the adjacent pulleys are different; the structure and the fixing manner of the second pulley shaft 63 may be the same as those of the second rotating shaft 53 or the first pulley shaft 61, and are not described in detail herein.

In a specific embodiment of the present invention, the second pulley block also includes two pulleys, namely a third pulley 641 and a fourth pulley 642, and the third pulley 641 is disposed near the sidewall of the storage box 20.

Certainly, the first pulley axle 61 and the second pulley axle 63 may further be sleeved with a gasket (not labeled) and other components for fixing the positions of the first pulley block 62 and the second pulley block 64, which will not be described in detail herein.

Accordingly, the slide bar 40 has two structures, one of which is the same as that of the above-described first embodiment, that is, the slide bar 40 includes: a lower rail contact surface 41 which is engaged with the second sliding wheel 54, wherein the lower rail contact surface 41 is an inclined surface extending from the vertical direction of the storage box; in the drawing process of the storage box, the edge of only one axial section in each pulley is continuously tangent to the lower rail abutting surface; in another embodiment (this embodiment is not shown), the lower rail contact surface is a stepped surface formed in the vertical direction of the storage box; in the drawing process of the storage box, each pulley is segmented and continuously tangent to the lower rail butt joint surface.

In this specific example, in addition to the above-described structure, the lower rail abutment surface 41 includes: a first abutting surface 411, wherein the first abutting surface 411 is provided with a tail end arranged close to the rear wall of the box body 10 and a front end arranged opposite to the tail end; a second abutting surface 412 extending from the front end of the first abutting surface 411, a third abutting surface 413 extending from the other end of the second abutting surface 412, a fourth abutting surface 414 extending from the other end of the third abutting surface 413, and a fifth abutting surface 415 extending from the tail end of the first abutting surface 411; the first abutting surface 411 extends smoothly from the front-back horizontal direction; the second contact surface 412 extends obliquely in the front-rear direction from the end portion common to the first contact surface 411, and extends obliquely upward; the third abutting surface 413 is an arc surface, in an initial state, the storage box 20 is accommodated in the box body 10, and each pulley in the second wheel set 64 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time; the fourth abutting surface 414 is a right-angle connecting surface for preventing any one of the pulleys in the second pulley block 64 from sliding out of the predetermined path of the sliding rod 40; the fifth contact surface 415 extends obliquely in the front-rear direction from the end portion common to the first contact surface 411, and extends obliquely downward; when each pulley of the second wheel set 64 is tangent to the first abutting surface 411 and the fifth abutting surface 415 at the same time, the storage box 20 is drawn out from the box body 10 to the maximum state.

In the refrigerator according to the second embodiment of the present invention, in the initial state, the storage box 20 is accommodated in the refrigerator body 10, each of the pulleys in the first pulley block 62 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time, and each of the pulleys in the second pulley block 6 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time.

In the process that the storage box 20 is pulled out from the box body 10, each pulley in the first pulley block slides forwards along the slide way 30, the linear velocity of each pulley is the same, the rotating speed is different, meanwhile, each pulley in the second pulley block 64 slides backwards relatively along the slide rod 40, each pulley in the first pulley block 62 is tangent to the second abutting surface 322 and the first abutting surface 321 in sequence, after sliding a distance past the first abutting surface 321, the front end of the storage box 20 inclines downwards under the action of self weight, and meanwhile, each pulley in the second pulley block 64 is tangent to the rail abutting surface 31 and slides forwards continuously.

Correspondingly, in the process that the storage box 20 is drawn outwards from the box body 10, each pulley in the second pulley block 64 is respectively tangent to the second abutting surface 412 and the first abutting surface 411 in sequence; when the fifth abutting surface 415 reaches and is tangent to the fifth abutting surface 415, the fifth abutting surface 415 prevents each pulley in the second pulley set 64 from continuously sliding backward, and simultaneously, each pulley in the second pulley set 64 and each pulley in the first pulley set 62 respectively abut against each other and prevent each pulley in the first pulley set 62 from continuously sliding forward, and at this time, the storage box 20 is drawn out from the box body 10 to the maximum state.

In the refrigerator provided by the second embodiment of the present invention, in the process that the first pulley block and the second pulley block slide relative to the slide way and the slide bar, the first pulley block and the second pulley block are both composed of at least two pulleys coaxially arranged, and the diameters of the adjacent pulleys are different; the gravity center of the storage box is automatically aligned to the middle position of the slide way under the action of gravity in the process of drawing the storage box along the box body, the acting force generated by people in the process of pushing and pulling can be counteracted by the reaction force generated by the slide wheel, the slide way matched with the slide wheel and the slide rod, and the phenomenon of unsmooth sliding caused by the left-right shaking generated in the process of pushing and pulling the storage box is avoided.

Referring to fig. 7, 8A, 8B, 8C, and 8D, a refrigerator according to a third embodiment of the present invention further includes: the first roller shaft 71 is arranged on the same side as the sliding rod 40, and the first roller 72 is sleeved on the first roller shaft 71 and rotates by taking the first roller shaft 71 as a fulcrum in the process that the storage box is pulled along the box body. Wherein, the slideway 30 is provided with a lower track matched with the first roller 72, and the lower track is provided with a lower track abutting surface 32 arranged close to the first roller 72; at least in the drawing process of the storage box 20, the lower rail abutting surface 32 contacting with the first roller 72 is an inclined surface extending from the storage box 20 in the up-down direction; the first roller shaft 71 is arranged parallel to the inclined surface of the lower rail abutting surface 32; in the process of drawing the storage box 20 in the horizontal direction, the first roller 72 is continuously tangent to the inclined surface formed on the lower rail abutting surface 32.

In an embodiment of the present invention, the storage box 20 is a container with an upper opening and four side frames 21 standing on the upper side for placing articles. The sliding rod 40 and the first roller shaft 71 are arranged on the outer side walls of the two oppositely arranged frames 21 of the storage box 20.

Preferably, the sliding rod 40 has a tail end disposed adjacent to the rear wall of the storage box and a front end disposed opposite to the tail end; the first roller shaft 71 is disposed at the end of the slide bar 40.

In a specific embodiment of the present invention, the refrigerator further includes: a first roller frame 73 for cooperating with the first roller 72; the end of the sliding rod 40 is opened with a first groove 43, one of the side walls of the first groove 43 is opened with a first accommodating portion 431, and the first roller frame 73 includes: a supporting body 731 which is embedded in the first groove 43, a mating portion 732 which is arranged on the outer side wall of the supporting body and matches with the first accommodating portion 431, a second groove 7311 which is arranged from the supporting body 731 in the direction of the lower rail abutting surface 32 of the slideway, and a clamping hole 7312 which is symmetrically arranged from the side wall of the second groove 7311 close to one side of the storage box and the corresponding side wall, wherein the diameter of the clamping hole 7312 is equal to the axial section diameter of the first roller shaft 71; the first roller shaft 71 is disposed in two symmetrically disposed clamping holes 7312, and the first roller 71 is partially movably disposed in the second groove 7311.

Specifically, the first receiving portion 431 is a through hole or a groove formed on a side wall of the first groove 43, and the engaging portion 732 is a boss disposed on an outer side wall of the supporting body 731; an opening 7313 is further opened at a side of any one of the clamping holes 7312 close to the top wall of the second groove 7311 to communicate the clamping hole 7312 with the top wall of the second groove 7311; the width of the opening 7313 near the holding hole 7312 is smaller than the diameter of the holding hole 7312, and the width of the opening 7313 near the top wall of the second groove 7311 is equal to or larger than the diameter of the holding hole 7312. In this way, during the installation process, the first roller 72 is firstly sleeved on the first roller shaft 71, and then the first roller shaft 71 is inserted into the clamping hole 7312 after passing through the opening 7313 in an interference manner, which is convenient for the installation and fixation of the first roller 72.

Preferably, for the convenience of manufacturing process, the lower rail abutting surface 32 is entirely provided as an inclined surface extending from the storage box in the up-down direction. In a specific embodiment of the present invention, the inclination angle of the inclined surface ranges from 10 degrees to 30 degrees, for example: 20 degrees.

In a preferred embodiment of the present invention, the lower rail contact surface 32 of the slide 30 includes: a first abutting surface 321, wherein the first abutting surface 321 has a tail end arranged near the rear wall of the box body and a front end arranged opposite to the tail end; a second abutting surface 322 extending from the end of the first abutting surface 321, a third abutting surface 323 extending from the other end of the second abutting surface 322, and a fourth abutting surface 324 extending from the other end of the third abutting surface 323; the first abutting surface 321 and the third abutting surface 323 smoothly extend from the front-back horizontal direction; the second abutting surface 322 extends obliquely from the end portion shared by the first abutting surface 321 in the front-back direction and extends obliquely downward; the fourth abutting surface 324 extends vertically and upwards from the end shared by the third abutting surface 323; in the initial state, the storage box 20 is accommodated in the box body 10, and the first roller 72 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time.

In a preferred embodiment of the present invention, the front end (near the open side) of the chute 30 is further provided with a stopper to stop the first roller 72 from sliding out of the chute 30, the stopper comprising: a second roller shaft 74, and a second roller 75 sleeved on the second roller shaft 74.

Preferably, the sliding rod 40 has a lower rail contact surface 41 engaged with the second roller 75, and the lower rail contact surface 41 is an inclined surface extending in the vertical direction from the storage box; the second roller shaft 74 is provided in parallel with the inclined surface of the lower rail abutment surface 41; in the process of drawing the storage box 20, the second roller 75 is continuously tangent to the inclined surface formed on the lower rail contact surface 41.

In addition, a third groove 33 is formed in a position of the slide way 40 corresponding to the stop member, a second accommodating portion 331 is formed in one side wall of the third groove 33, and accordingly, the stop member may further include: a second roller carrier 76 used in cooperation with the second roller 75, wherein the second roller carrier 76 is embedded in the third groove 33; in this embodiment, the structures and the installation and matching manners of the second roller shaft 74, the second roller 75, the second roller frame 76, and the third groove 33 are respectively the same as those of the first roller shaft 71, the first roller 72, the first roller frame 73, and the first groove 43, and thus will not be described in detail.

Of course, the first roller shaft 71 and the second roller shaft 74 may also be sleeved with a gasket (not labeled) and other components for fixing the positions of the first roller 72 and the second roller 75, which will not be described in detail herein.

In this embodiment, the second roller shaft 74, the second roller 75, and the second roller frame 76 are disposed at the front end of the lower rail of the chute 30.

In this specific example, the lower rail abutment surface 41 includes: a first abutting surface 411, wherein the first abutting surface 411 is provided with a tail end arranged close to the rear wall of the box body 10 and a front end arranged opposite to the tail end; a second abutting surface 412 extending from the front end of the first abutting surface 411, a third abutting surface 413 extending from the other end of the second abutting surface 412, a fourth abutting surface 414 extending from the other end of the third abutting surface 413, and a fifth abutting surface 415 extending from the tail end of the first abutting surface 411; the first abutting surface 411 extends smoothly from the front-back horizontal direction; the second contact surface 412 extends obliquely in the front-rear direction from the end portion common to the first contact surface 411, and extends obliquely upward; the third abutting surface 413 is an arc surface, in an initial state, the storage box 20 is accommodated in the box body 10, and the second roller 75 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time; the fourth abutting surface 414 is a right-angle connecting surface for preventing the second roller 75 from sliding out of the predetermined path of the sliding bar 40; the fifth contact surface 415 extends obliquely in the front-rear direction from the end portion common to the first contact surface 411, and extends obliquely downward; when the second roller 75 is tangent to the first abutting surface 411 and the fifth abutting surface 415 at the same time, the storage box 20 is drawn out from the box body 10 to the maximum state.

Preferably, the slide way 30 further has an upper rail corresponding to the lower rail thereof, the upper rail of the slide way has an upper rail abutting surface 31 disposed close to the slide bar 40, the slide bar 40 has an upper rail abutting surface 41 disposed opposite to the lower rail abutting surface 42 thereof, and an abutting table 77 is disposed above the upper rail abutting surface 41 corresponding to the position of the first roller 72; in an initial state, the abutting table 77 is separated from the upper rail abutting surface 31 of the slide 30, when the storage box 20 is pulled, the front end of the storage box is inclined downward by the action of self weight, the abutting table 77 continuously abuts against the upper rail abutting surface 31 of the slide, and the first roller 72 is far away from the lower rail abutting surface 32 of the slide 30.

In the refrigerator according to the third embodiment of the present invention, in the initial state, the storage box 20 is accommodated in the refrigerator body 10, the first roller 72 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time, and the second roller 75 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time.

In the process that the storage box 20 is pulled out from the box body 10, the first roller 72 slides forwards along the slide rail 30, meanwhile, the second roller 75 slides backwards relatively along the slide rod 40, the first roller 72 is sequentially tangent to the second abutting surface 322 and the first abutting surface 321, when sliding for a certain distance past the first abutting surface 321, the front end of the storage box 20 tilts downwards under the action of self-weight, meanwhile, the first roller 72 is separated from the lower rail abutting surface 32 of the slide rail, and the abutting table 77 continuously abuts against the upper rail abutting surface 31 of the slide rail and continuously slides forwards.

Correspondingly, in the process that the storage box 20 is drawn outwards from the box body 10, the second roller 75 is sequentially tangent to the second abutting surface 412 and the first abutting surface 411; when the second roller 75 is reached and tangent to the fifth abutting surface 415, the fifth abutting surface 415 prevents the second roller 75 from continuously sliding backwards, meanwhile, the second roller 75 abuts against the first roller 72 and prevents the first roller 72 from continuously sliding forwards, and at this time, the storage box 20 is drawn out from the box body 10 to the maximum state.

In the refrigerator according to the third embodiment of the present invention, during the sliding process of the first roller and the second roller relative to the slide rail and the slide bar, because the matching surfaces of the slide way and the slide rod are arranged into inclined surfaces extending in the vertical direction, and simultaneously, the roller shafts corresponding to the rollers matched with the slide way and the slide rod are arranged in parallel with the inclined surfaces, in this way, in the process of drawing the storage box along the box body, under the action of gravity, the gravity center of the storage box is automatically aligned to the middle position of the slideway, the acting force generated manually during pushing and pulling can be counteracted by the reacting force generated by the roller and the matched slideway and the slide bar, the unsmooth sliding phenomenon caused by the left and right shaking of the storage box during pushing and pulling is avoided, meanwhile, the invention reduces the requirement of controlling the gap between the storage box and the box body, can reduce the fraction defective of products, is simple and easy to implement and is beneficial to improving the production efficiency.

It should be noted that, in the refrigerators according to the above three embodiments, the stopper and the slide bar structure engaged therewith may be interchanged, and detailed description is omitted here.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A refrigerator, characterized in that: the storage box comprises a box body and a storage box arranged in the box body, wherein a slideway and a sliding rod which are matched with each other are arranged between the inner side wall of the box body and the outer side wall of the storage box, a first roller shaft is arranged at the same side of the sliding rod, and a first roller is sleeved on the first roller shaft;

in the process that the storage box is pulled in the horizontal direction, the first roller is continuously tangent to an inclined plane formed on the lower rail abutting surface;

the slide way is provided with an upper track corresponding to the lower track of the slide way, the upper track of the slide way is provided with an upper track abutting surface which is arranged close to the slide rod, the slide rod is provided with an upper track abutting surface which is arranged opposite to the lower track abutting surface of the slide rod, and an abutting platform is arranged above the upper track abutting surface and corresponds to the position of the first roller;

2. The refrigerator according to claim 1, wherein the slide is fixedly installed on an inner sidewall of the cabinet, the slide bar is fixedly installed on an outer wall of the storage box,

the first roller shaft is embedded at the tail end of the sliding rod.

3. The refrigerator according to claim 2, further comprising: the first roller carrier is matched with the first roller for use;

4. The refrigerator according to claim 3, wherein the first accommodating portion is a through hole or a groove opened in a side wall of the first groove,

5. The refrigerator of claim 1, wherein the entire lower rail seating surface is provided as an inclined surface extending in an up-down direction from the storage box.

6. The refrigerator of claim 1, wherein the lower rail seating surface comprises: the first abutting surface is provided with a tail end arranged close to the rear wall of the box body and a front end arranged opposite to the tail end;

7. The refrigerator according to claim 1, wherein a front end of the chute is provided with a stopper to stop the first roller from sliding out of the chute.

8. The refrigerator according to claim 7, wherein the stopper includes: the second roller shaft and a second roller sleeved on the second roller shaft;

9. The refrigerator of claim 8, wherein the lower rail abutment surface comprises: