CN112197476B

CN112197476B - Refrigerator with a door

Info

Publication number: CN112197476B
Application number: CN201910610950.9A
Authority: CN
Inventors: 郭动; 王朋朋; 殷宝振
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2022-04-29
Anticipated expiration: 2039-07-08
Also published as: CN112197476A

Abstract

The invention discloses a refrigerator, comprising: a box body; the bracket assembly is arranged on the box body in a relatively sliding manner along a first direction from a standing position to a working position; the storage part is movably connected to the support assembly in the vertical direction, and the first direction is vertical to the vertical direction; the height adjusting assembly comprises a support rod mechanism and a driving mechanism, the support rod mechanism is respectively movably connected with the support assembly and the storage part and comprises a second support rod, and the second support rod is provided with a first end which is in relative sliding connection with the support assembly or the storage part and an actuating piece arranged at the first end; when the support assembly moves from the standing position to the working position, the driving mechanism supports the actuating piece and drives the supporting rod mechanism to move through the actuating piece, the supporting rod mechanism drives the storage part to change to a lifting state relative to the support assembly, and the driving mechanism supports the actuating piece to prevent the storage part from resetting under the action of gravity, so that the stability of the storage part in the process of taking and placing the articles by a user is kept.

Description

Refrigerator with a door

Technical Field

The invention relates to a refrigerator, and belongs to the technical field of household appliances.

Background

The prior art refrigerator generally comprises a storage part for storing food, such as a storage plate or a drawer, but the storage part at the lowest layer or the uppermost layer of the refrigerator generally has the problem of inconvenience in taking and placing food. For example, for a drawer arranged at the lowest layer of a refrigerator, a user needs to bend down or squat greatly to take and place food, and even when the taken and placed food is heavy, the burden on the muscle of the waist or legs of the user is increased; for another example, for a drawer or a storage plate arranged at the uppermost layer of the refrigerator, a user cannot easily observe food at a deep position, and easily gets dirty clothes when taking and placing the food, and even needs to stand on tiptoe or stand on a stool, which is very inconvenient.

In order to solve the above-mentioned technical problems, it is one of the popular research subjects in the art to provide a refrigerator having a liftable storage portion, and how to raise (or lower) the storage portion, how to maintain the lifted storage portion in the lifted state under the action of gravity, and how to reset the storage portion from the lifted state are technical details that must be solved in the research subjects of the refrigerator having a liftable storage portion.

Disclosure of Invention

In order to solve at least one of the above technical problems in the prior art, an object of the present invention is to provide a refrigerator, which maintains a lifted storage portion in a lifted state under the action of gravity by a driving mechanism.

To achieve the above object, an embodiment of the present invention provides a refrigerator including:

a box body;

the bracket assembly is arranged on the box body in a relatively sliding manner along a first direction from a standing position to a working position;

the storage part is movably connected to the bracket component in the vertical direction, and the first direction is vertical to the vertical direction;

the height adjusting assembly comprises a support rod mechanism and a driving mechanism, the support rod mechanism is respectively movably connected with the support assembly and the storage part and comprises a second support rod, the first support rod is provided with a first end which is in relative sliding connection with the support assembly or the storage part and an actuating part arranged at the first end, and the driving mechanism is provided with a driving part which is movably arranged along the first direction relative to the support assembly;

when the support assembly moves from the standing position to the working position, the driving mechanism supports against the actuating piece and drives the support rod mechanism to move through the actuating piece, the support rod mechanism drives the storage part to change to a lifting state relative to the support assembly, and the driving mechanism supports against the actuating piece to prevent the storage part from resetting under the action of gravity.

As a further improvement of an embodiment of the present invention, the actuating member is movably connected to the first end; the height adjusting assembly further comprises a restoring mechanism, and when the storage part is in the lifting state, the restoring mechanism can trigger the actuating part and the driving part to be disconnected with each other, so that the storage part is reset under the action of gravity.

As a further improvement of the embodiment of the present invention, the second supporting rod has a limiting member movably disposed at the first end;

when the storage part is in the lifting state, the limiting part abuts against the actuating part to limit the actuating part to move relative to the first end, and the restoring mechanism can push the limiting part, so that the actuating part can move relative to the first end and is separated from the driving mechanism.

As a further improvement of an embodiment of the present invention, the restoring mechanism is movably disposed on the rack assembly or the storage portion, and includes an operable member, a restoring member, and a transmission member connected between the operable member and the restoring member;

when the storage part is in the lifting state, the operable part drives the reduction element to move through the transmission part, so that the reduction element pushes the limiting part.

As a further improvement of the embodiment of the present invention, the actuating element is rotatably connected to the first end around an axis perpendicular to the first direction, and the limiting element is disposed at the first end in a protruding manner so as to slide in a direction parallel to the axis;

when the bracket assembly moves from the rest position to the working position, the driving part pushes the actuating component to rotate around the first end around the axis in a first clock hand direction until the driving part passes over the actuating component in a direction opposite to the first direction;

when the support assembly moves from the standing position to the working position, the limiting piece abuts against and limits the actuating piece to rotate along the direction opposite to the first time hand direction, and the driving part abuts against and drives the support rod mechanism to move through the actuating piece;

when the restoring mechanism can push the limiting member to retract into the first end, the actuating member can rotate along the direction opposite to the first clock hand direction.

As a further improvement of an embodiment of the present invention, the driving mechanism includes a first driving end and a second driving end adapted to the first driving end, and the driving portion is disposed on one of the first driving end and the second driving end;

when the bracket assembly moves from the rest position to the working position, the first driving end and the second driving end move relatively to accumulate a resetting force between the first driving end and the second driving end; when the bracket component moves to the working position, under the action of the reset force, the driving part drives the storage part to change to a lifting state relative to the bracket component through the supporting rod mechanism.

As a further improvement of an embodiment of the present invention, the driving mechanism includes an elastic member, a first end of the elastic member is provided as the first driving end, and a second end of the elastic member is provided as the second driving end;

when the bracket assembly moves from the standing position to the working position, the elastic piece deforms; when the bracket component moves to the working position, the elastic piece recovers at least part of deformation so as to drive the storage part to change the height relative to the bracket component through the supporting rod mechanism.

As a further improvement of an embodiment of the present invention, the second driving end is fixedly mounted to the bracket assembly or the storage portion, and the driving portion is fixed to the first driving end; the driving mechanism also comprises a stop piece arranged on the box body,

when the bracket assembly moves from the rest position to the working position, the second driving end moves along the first direction, and the stop piece stops the movement of the driving part along the first direction, so that the first driving end and the second driving end move relatively.

As a further improvement of an embodiment of the present invention, the stopper is movably disposed on the case, and when the carriage assembly moves from the operating position to the rest position, the driving portion pushes the stopper and passes over the stopper in a direction opposite to the first direction.

As a further improvement of one embodiment of the present invention, the bracket assembly or the storage portion is provided with a guide portion, the guide portion has a first guide section and a second guide section, and the second guide section is connected with the first guide section;

when the bracket component moves from the standing position to the working position, the stop piece stops the movement of the driving part along the first direction, the driving part is sequentially matched with the first guide section and the second guide section, and gradually deviates from and disengages from the stop piece at the second guide section.

As a further improvement of an embodiment of the present invention, the guide portion is a guide groove formed on the bracket assembly;

the first guide section extends to the second guide section along the direction opposite to the first direction, and the second guide section extends from the first guide section along an inclination or curve in a direction forming an acute angle with the direction opposite to the first direction.

As a further improvement of an embodiment of the present invention, the height adjusting assembly further includes a locking mechanism and a releasing mechanism, the locking mechanism is disposed at an extending end of the second guide section away from the first guide section;

when the bracket assembly moves from the rest position to the working position, the driving part can be matched with the locking mechanism and locked, so that the first driving end and the second driving end are relatively static;

when the bracket assembly moves from the standing position to the working position, the release mechanism triggers the driving part to disengage from the locking mechanism, and the first driving end drives the storage part to change to a lifting state relative to the bracket assembly through the supporting rod mechanism under the action of the reset force.

As a further improvement of an embodiment of the present invention, the release mechanism includes a release member and a microswitch;

when the bracket assembly moves from the standing position to the working position, the release piece triggers the micro switch, and the micro switch controls the driving part to be disengaged from the locking mechanism.

As a further improvement of an embodiment of the present invention, the micro switch includes a micro pin movably disposed on the bracket assembly or the storage portion, and a third reset member connected to the micro pin;

when the bracket assembly moves from the standing position to the working position, the release piece pushes the micro pin to move relative to the bracket assembly, the micro pin pushes the driving part to be disengaged from the locking mechanism, and the third reset piece enables the micro pin to keep a reset trend.

As a further improvement of an embodiment of the present invention, the box body encloses a housing compartment; the bracket assembly comprises a drawer door and a bracket fixed at the rear part of the drawer door; when the bracket component is positioned at the rest position, the storage part is accommodated in the accommodating chamber; when the bracket component slides forwards to the working position, the storage part moves out of the accommodating chamber.

Compared with the prior art, the invention has the following beneficial effects: through setting up make the piece with actuating mechanism for actuating mechanism not only is used for driving storing portion and carries out the lifting, and through actuating mechanism and branch mechanism's the cooperation of piece, avoids being in the storing portion of lifting state and resets under the action of gravity moreover, so that keep the user to get the stability of putting article in-process storing portion.

Drawings

FIG. 1 is a schematic perspective view of a refrigerator cabinet according to an embodiment of the present invention;

FIG. 2a is a schematic perspective view of the storage compartment, the rack assembly and the height adjustment assembly of the refrigerator according to one embodiment of the present invention, wherein the rack assembly is shown in a resting position;

FIG. 2b is a schematic perspective view of another embodiment of the storage compartment, the rack assembly and the height adjustment assembly of the refrigerator, wherein the rack assembly is in a resting position;

FIG. 2c is a perspective view of a portion of the components of the refrigerator according to one embodiment of the present invention;

fig. 3 is a front view of a refrigerator according to an embodiment of the present invention;

FIG. 4a is a cross-sectional view of the refrigerator with cross-sectional lines shown as line A-A in FIG. 3, wherein the rack assembly is shown in a resting position;

FIG. 4B is a cross-sectional view of the refrigerator with cross-sectional lines drawn as lines B-B in FIG. 3, wherein the rack assembly is shown in a resting position;

FIG. 5a is a cross-sectional view of the refrigerator with cross-sectional views taken along line A-A of FIG. 3, illustrating a first intermediate state of the carriage assembly as it moves from the rest position to the operative position;

FIG. 5B is a cross-sectional view of the refrigerator with cross-sectional lines indicated as B-B in FIG. 3, wherein the bracket assembly is shown in a first intermediate position as it moves from the rest position to the operative position;

FIG. 6a is a cross-sectional view of the refrigerator with cross-sectional lines shown as line A-A in FIG. 3, illustrating a second intermediate state of the carriage assembly as it moves from the rest position to the operative position in accordance with one embodiment of the present invention;

FIG. 6B is a cross-sectional view of the refrigerator with cross-sectional lines indicated as B-B in FIG. 3, wherein the bracket assembly is shown in a second intermediate position as it moves from the rest position to the operative position in accordance with one embodiment of the present invention;

FIG. 7 is a cross-sectional view of the refrigerator with cross-sectional views taken along line A-A of FIG. 3, illustrating a third intermediate state of the carriage assembly as it moves from the rest position to the operative position;

FIG. 8a is a schematic perspective view of a refrigerator according to an embodiment of the present invention, illustrating an intermediate fourth state of the rack assembly when moving from the rest position to the working position;

FIG. 8b is a perspective view of another embodiment of the refrigerator shown in an intermediate fourth position with the carriage assembly moving from the rest position to the working position;

FIG. 9a is a cross-sectional view of the refrigerator with cross-sectional views taken along line A-A of FIG. 3, illustrating a fourth intermediate state of the carriage assembly as it moves from the rest position to the operative position;

FIG. 9B is a cross-sectional view of the refrigerator with cross-sectional lines indicated as B-B in FIG. 3, wherein the bracket assembly is shown in an intermediate fourth position as it moves from the rest position to the operative position;

FIG. 10 is a cross-sectional view of the refrigerator with hatching shown as line B-B in FIG. 3, illustrating the instant the stand assembly moves from the rest position to the working position;

FIG. 11 is a perspective view of a refrigerator according to an embodiment of the present invention, wherein the bracket assembly is shown in an operating position;

FIG. 12a is a cross-sectional view of the refrigerator with cross-sectional views taken along line A-A of FIG. 3, wherein the bracket assembly is shown in an operative position;

FIG. 12B is a cross-sectional view of the refrigerator with cross-sectional lines drawn as lines B-B in FIG. 3, wherein the bracket assembly is shown in an operative position;

FIG. 13 is a perspective view of the refrigerator illustrating the instant state of the bracket assembly moving from the working position to the rest position according to an embodiment of the present invention;

fig. 14 is a sectional view of the refrigerator according to one embodiment of the present invention, wherein the sectional lines are shown as lines a-a in fig. 3, which is an intermediate state of the carriage assembly moving from the working position to the rest position.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to specific examples shown in the drawings. These examples 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.

Referring to fig. 1 to 14, an embodiment of the present invention provides a refrigerator including a cabinet 1, a bracket assembly, a storage part 3, and a height adjustment assembly.

The box body 1 encloses a receiving chamber 10, and the receiving chamber 10 may be one or more of a refrigerating chamber, a freezing chamber, a temperature changing chamber, and the like.

The carriage assembly is mounted to the housing 1 and is slidable relative to the housing 1 in a first direction from a rest position to an operative position. By way of example, the rest position can be understood as: the position of the rack assembly relative to the cabinet 1 when the refrigerator is used for refrigerating and storing food normally at most of the time; the working position can be understood as: in the case where the refrigerator is subjected to a non-destructive operation by a user at a small number of times, the carriage assembly is at (or near) a limit of travel in the first direction with respect to the cabinet 1. Of course, this is only an example of the rest position and the working position according to the present embodiment, and the present invention is not limited thereto, for example, the carriage assembly may also slightly move in the first direction from the working position in a non-destructive manner.

The storage part 3 is used for placing food and is directly and/or indirectly connected to the bracket assembly so as to be supported by the bracket assembly. Specifically, the support of the bracket assembly may be realized by pressing the bracket assembly above the bracket assembly, or may be realized by suspending the bracket assembly below the bracket assembly.

And, storing portion 3 passes through the height adjustment subassembly and is connected to the bracket component movably in vertical direction, the first direction is perpendicular with vertical direction mutually, promptly the first direction is the horizontal direction. Under the action of the height adjusting assembly, the height of the storage part 3 in the vertical direction can be changed relative to the bracket assembly, namely the storage part 3 can be lifted or lowered relative to the bracket assembly.

The height adjustment assembly comprises a support rod mechanism and a driving mechanism.

Wherein: the support rod mechanism is respectively movably connected with the support component and the storage part 3, namely movably connected with the support component and movably connected with the storage part 3; the driving mechanism comprises a first driving end 511 and a second driving end 512 adapted to correspond to the first driving end 511.

The first and second driving ends 511, 512 are relatively movable to accumulate a restoring force therebetween when the carriage assembly is moved from the rest position to the operative position. When the bracket assembly moves to the working position, under the action of the reset force, the first driving end 511 resets relative to the second driving end 512, the first driving end 511 drives the supporting rod mechanism to move, and the supporting rod mechanism drives the storage part 3 to change the height relative to the bracket assembly. For example: if the storage part 3 is disposed at the bottom of the refrigerator, the lifting height of the storage part 3 relative to the bracket assembly is changed from the original state to the lifting state under the driving of the first driving end 511, so as to prevent a user from bending down or squatting down to take and place food; if the storage part 3 is disposed on the top of the refrigerator, the storage part 3 is lowered relative to the rack assembly by the driving of the first driving end 511, that is, the storage part is changed from an original state to a lowered state, so as to prevent a user from stepping on a foot or standing on a chair to take and put food.

Thus, when the rack assembly moves from the rest position to the working position, the first driving end 511 and the second driving end 512 can move relatively and gradually accumulate a reset force, and when the rack assembly moves to the working position, the reset force is used as a driving force to drive the storage part 3 to change the height, so that a user can conveniently change the height of the storage part 3 properly by moving the rack assembly, and further the effect of facilitating food storage and taking is achieved.

As mentioned above, the first direction is perpendicular to the vertical direction, which is any horizontal direction. For example, the first direction may be set to be from back to front in the present embodiment, that is, when the rack assembly moves along the first direction, the rack assembly moves from the deep inside of the accommodating compartment 10 to the front opening of the accommodating compartment 10, as shown in the direction v in the figure; or, for example, in a variant embodiment, when the carriage assembly moves in the first direction, it translates left and right inside the housing compartment 10.

In the following, the present invention is described in detail by taking an example that the storage part 3 is disposed at the bottom of the refrigerator and the first direction is from back to front in the drawings, but it goes without saying that the present embodiment is adaptively adjusted to correspond to a changed embodiment that the storage part 3 is disposed at the top of the refrigerator and the first direction is not from back to front, for example, when the storage part 3 in the present embodiment is changed from an original state to a lifted state and corresponds to a changed embodiment that the storage part 3 is disposed at the top of the refrigerator, the change is correspondingly changed to a change that the storage part 3 is changed from an original state to a lowered state, and the change does not depart from the technical spirit of the present invention.

In the present embodiment in particular, with reference to fig. 1 to 2b, the receiving compartment 10 is a freezing compartment.

The bracket assembly is mounted on the box body 1 through a slide rail and can only relatively slide along the front-back direction, and specifically comprises a drawer door 2 and a bracket.

When the bracket assembly is located at the rest position, the rear surface of the drawer door 2 is tightly attached to the front frame of the box body 1, so that the drawer door 2 closes at least part of the front opening of the accommodating compartment 10; when the bracket assembly is in the operating position, the rear surface of the drawer door 2 faces forward away from the front rim of the cabinet 1, so that the drawer door 2 opens the front opening of the receiving compartment 10.

The bracket is fixed behind the drawer door 2 and synchronously reciprocates back and forth along with the drawer door 2, and comprises a base bracket 21 and an auxiliary bracket 22. The basic bracket 21 is of a long straight rod structure extending along the front-back direction, the front end of the basic bracket is fixed at the back of the drawer door 2, and the basic bracket extends into the bracket accommodating groove 12 of the bottom wall 11 of the box body 1 from the front to the back from the drawer door 2, so that the firmness of the basic bracket 21 can be enhanced by matching with the bottom wall 11 of the box body 1; the auxiliary bracket 22 is fixed above the base bracket 21 and is positioned between the storage part 3 and the base bracket 21 so as to facilitate the matching between the bracket and the height adjusting assembly.

The storage part 3 is provided with a drawer box with an opening at the upper part, is supported on the bracket and can synchronously reciprocate back and forth along with the bracket component when a user pulls or pushes the bracket component.

With reference to fig. 4a and 4b, when the support assembly is in the rest position, the storage part 3 is accommodated in the accommodating compartment 10, so that the food therein is stored at a low temperature; with reference to fig. 5a to 9b, when the rack assembly moves from the rest position to the working position, the storage part 3 gradually comes out of the accommodating compartment 10; referring to fig. 11 to 12b, when the bracket assembly is located at the working position, the storage portion 3 is completely removed from the accommodating compartment 10, the food stored in the storage portion is exposed from the upper opening of the storage portion 3 for the user to take and place the food, and at this time, the storage portion 3 is further changed from the original state to the lifted state relative to the bracket assembly, so that the user can take and place the food more conveniently and comfortably.

Further, the storage part 3 is supported by the support through the strut mechanism, and the storage part 3 changes from the lifted state to the original state depending on the state change of the strut mechanism.

Two ends of the support rod mechanism are respectively movably connected to the storage part 3 and the support, and the support rod mechanism has a retracted state and an expanded state. When the strut mechanism is in the retracted state, two ends of the strut mechanism have a first height difference in the vertical direction; when the strut mechanism is in the unfolding state, a second height difference is formed between two ends of the strut mechanism in the vertical direction, and the second height difference is larger than the first height difference.

Correspondingly, when the bracket assembly is located at the standing position, the strut mechanism is in the retracted state, so that the storage part 3 is in an original state relatively close to the bracket; and when the bracket component is positioned at the working position, the supporting rod mechanism is in the unfolding state, so that the storage part 3 is in a lifting state relatively far away from the bracket. That is, when the bracket assembly moves from the standing position to the working position, under the action of the reset force, the first driving end 511 drives the strut mechanism to be switched from the retracted state to the deployed state, and then the strut mechanism jacks up the storage part 3, so that the storage part 3 is changed from the original state to the lifted state.

In this embodiment, the rod mechanism specifically includes a first rod 41 and a second rod 42, the first rod 41 and the second rod 42 are arranged in a cross shape, and the middle portions of the two are pivotally connected through a main pin 40.

The first end (lower end in this embodiment) of the first lever 41 is pivotally connected to the auxiliary bracket 22, and the second end (upper end in this embodiment) of the first lever 41 is connected to the storage part 3 through a first pin 413, and specifically, the first pin 413 is pivotally and slidably disposed in the first sliding groove 322 of the storage part 3 in the front-rear direction.

A first end (lower end in this embodiment) of the second rod 42 is supported by the auxiliary bracket 22 so as to slide relative thereto, and a second end (upper end in this embodiment) of the second rod 42 is connected to the storing part 3 by a second pin 423, and specifically, the second pin 423 is rotatably and slidably provided in a second sliding groove 321 of the storing part 3 in the front-rear direction.

In this way, by driving either one of the first and

second struts

41 and 42, the strut mechanism can be switched between the retracted state and the deployed state. When the strut mechanism is changed from the retracted state to the deployed state, the first end of the first strut 41 rotates relative to the auxiliary bracket 22, the first end of the second strut 42 slides relative to the auxiliary bracket 22, and simultaneously, the second end of the first strut 41 and the second end of the second strut 42 both slide and rotate relative to the storage portion 3 and approach each other; conversely, when the strut mechanism is changed from the retracted state to the deployed state, the first end of the first strut 41 rotates relative to the auxiliary bracket 22, the first end of the second strut 42 slides relative to the auxiliary bracket 22, and at the same time, the second end of the first strut 41 and the second end of the second strut 42 both slide and rotate relative to the storage portion 3 and move away from each other.

It should be noted that this embodiment only illustrates a preferred embodiment of the strut mechanism, and the specific structure of the strut mechanism may also be implemented in other modified embodiments, for example, the number and shape of the struts included in the strut mechanism, the connection manner between each strut and the bracket assembly or the storage portion 3, and the like may be implemented in a variable manner within a feasible range, in order to realize the basic principle of driving the storage portion 3 to ascend or descend.

Further, in this embodiment, when the bracket assembly moves to the working position, the first driving end 511 drives the first end of the second supporting rod 42, and then the supporting rod mechanism changes from the retracted state to the deployed state under the driving of the second supporting rod 42. In an alternative embodiment, the first driving end 511 can drive the second end of the second strut 42, so that the strut mechanism is driven by the second strut 42 to change from the retracted state to the deployed state.

Further, the restoring force may be an elastic deformation restoring force or a magnetic force.

Preferably, the driving mechanism includes an elastic member 51, and a first end of the elastic member 51 is provided as the first driving end 511 and a second end of the elastic member 51 is provided as the second driving end 512. When the bracket assembly moves from the rest position to the working position, the first driving end 511 and the second driving end 512 can move relatively, and the elastic element 51 gradually accumulates elastic deformation restoring force due to deformation, and the elastic deformation restoring force is used as the reset force; when the bracket component moves to the working position, under the action of the elastic deformation restoring force, the elastic piece 51 at least partially restores to deform so as to drive the supporting rod mechanism, and then the storage part 3 is changed from an original state to a lifting state.

In this embodiment, the elastic member 51 is provided as a tension spring, when the carriage assembly moves from the rest position to the working position, the first driving end 511 and the second driving end 512 can be separated from each other, and the elastic member 51 gradually accumulates a tensile elastic deformation restoring force due to tensile deformation. In a variant embodiment, the elastic element 51 is also changed into a compression spring, that is, when the carriage assembly moves from the rest position to the working position, the first driving end 511 and the second driving end 512 can approach each other relatively, and the elastic element 51 gradually accumulates a restoring force of a compression type elastic deformation due to the compression deformation; alternatively, the elastic member 51 may be changed to a torsion spring or other elastic structure.

In addition, in other alternative embodiments, the elastic member 51 may be eliminated, and the first driving end and the second driving end are respectively provided as magnetic members, and when the bracket assembly moves from the rest position to the working position, the first driving end and the second driving end may relatively move to change the magnitude of the magnetic force therebetween (for example, as an alternative to a tension spring, a magnetic attractive force that increases with a relatively distance, or as an alternative to a compression spring, a magnetic repulsive force that increases with a relatively distance), which is the reset force; when the support assembly moves to the working position, the first driving end drives the support rod mechanism under the magnetic force, and therefore the storage part 3 is changed from an original state to a lifting state.

Further, the first and second driving ends 511 and 512 are movable in a forward and rearward direction relative to each other when the carriage assembly is moved from the rest position to the working position.

The second driving end 512 is fixedly installed on the bracket component or the storage part 3, and the second driving end 512 is specifically fixed on the auxiliary bracket 22; the driving mechanism further includes a driving portion 52 fixedly provided to the first driving end 511 and a stopper 53 provided to the case 1.

When the carriage assembly moves from the rest position to the working position, the second driving end 512 moves forward along with the carriage assembly synchronously, the stop member 53 is located on the forward movement path of the driving portion 52, the driving portion 52 can abut against the rear side of the stop member 53, so that the forward movement of the driving portion 52 is stopped by the stop member 53, and the forward movement of the corresponding first driving portion 52 is also stopped, so that the first driving end 511 and the second driving end 512 are relatively far away, and the elastic member 51 deforms elastically.

Of course, the variant embodiments may be modified to: the second driving end is movably connected to the support assembly or the storage portion 3, the first driving end is connected to the support rod mechanism, the driving portion is arranged at the second driving end, further, when the support assembly moves from the standing position to the working position, the first driving end moves forwards along with the support assembly synchronously, the stopping member stops the driving portion through stopping, so that the second driving end moves forwards, and therefore the first driving end and the second driving end move relatively. That is, in summary, with the present embodiment and the modified embodiment, the driving portion may be disposed at one of the first driving end and the second driving end, so that when the bracket assembly moves from the rest position to the working position, the stop member stops the driving portion, and the other of the first driving end and the second driving end can move along the first direction.

Further, the rack assembly or the storage portion 3 is provided with a guiding portion 220 matching with the driving portion 52 for guiding the movement of the driving portion 52 relative to the rack assembly or the storage portion 3, and the guiding portion 220 is disposed on the auxiliary rack 22 in the embodiment adapted to the position of the driving portion 52, but is not limited thereto, for example, when the elastic member 51 and the driving portion 52 are disposed on the storage portion 3, the guiding portion 220 is adapted to the storage portion 3.

The guide part 220 has a first guide section 220a (see fig. 5a designation) and a second guide section 220b (see fig. 6a designation) connecting the first guide section 220 a. Wherein: the first guide section 220a extends from front to rear along one end thereof until it is connected to the second guide section 220 b; the second guide section 220b extends obliquely or curvilinearly from the first guide section 220a in a direction at an acute angle to the horizontal rearward, for example, in the present embodiment, in an arc-shaped curve, and the extending direction thereof has a component upward away from the stopper 53.

The driving portion 52 is provided in the guide portion 220 to slide relatively. When the carriage assembly moves from the rest position to the working position, referring to fig. 5a, the stop member 53 stops the forward movement of the driving portion 52, and the guiding portion 220 moves forward relative to the driving portion 52 (i.e. the driving portion 52 slides along the guiding portion 220), and the driving portion 52 is first engaged with the first guiding segment 220a and slides along the first guiding segment 220a toward the second guiding segment 220b, referring to fig. 6a, and then the driving portion 52 is engaged with the second guiding segment 220b and slides along the second guiding segment 220b, referring to fig. 7, and then the driving portion 52 gradually departs from and disengages from the stop member 53 at the second guiding segment 220b, and then the driving portion 52 can move forward with the carriage assembly and pass over the stop member 53.

Preferably, the guide portion 220 is a guide groove formed on the auxiliary bracket 22, and the driving portion 52 is a cylinder inserted into the guide portion 220, and one end of the cylinder horizontally protrudes out of the guide portion 220 to be matched with the position of the stopper 53. Of course, the form of the guide portion 220 and the form of the driving portion 52 are not limited to these.

Further, the height adjusting assembly further comprises a locking mechanism, the locking mechanism is disposed at the extending end of the second guiding section 220b far away from the first guiding section 220a, referring to fig. 9b, in the present embodiment, the locking mechanism comprises a locking surface 220c formed at the extending end of the second guiding section 220 b; when the carriage assembly moves from the rest position to the working position, specifically, when the driving portion 52 gradually departs from the second guide section 220b and disengages from the stopper 53, the driving portion 52 may be engaged with and locked to the locking surface 220c, so that the elastic deformation of the elastic member 51 is maintained, and the elastic deformation restoring force is maintained.

In this embodiment, the elastic element 51 is disposed in the first guiding segment 220a, and the second driving end 512 is fixed to an end (in this embodiment, a front end) of the first guiding segment 220a far from the second guiding segment 220 b.

The locking surface 220c is substantially perpendicular to the front-back direction and substantially perpendicular to the direction of the elastic deformation restoring force, and when the driving portion 52 is fitted to the locking surface 220c, the driving portion 52 tightly abuts against the locking surface 220c and is locked under the action of the elastic deformation restoring force.

Further, the height adjusting assembly further comprises a releasing mechanism, when the support assembly moves to the working position, the releasing mechanism can trigger the driving portion 52 to disengage from the locking mechanism, so that the first driving end 511 performs reset motion relative to the second driving end 512 under the action of the elastic deformation restoring force, the first driving end 511 drives the support rod mechanism to change from the retracted state to the deployed state, and the support rod mechanism drives the storage portion 3 to change from the original state to the lifted state.

Preferably, referring to fig. 2b and 2c, the release mechanism comprises a release 62 and a microswitch; when the bracket assembly moves from the rest position to the working position, the release element 62 activates the micro switch, and the micro switch control drive 52 disengages the locking mechanism.

In this embodiment, the microswitch includes a inching pin 61 and a third reset member 63.

Wherein the micro-motion pin 61 is a T-shaped pin movably disposed on the bracket assembly or the storage part 3, specifically, the micro-motion pin 61 is movably disposed on the auxiliary bracket 22 along the front-back direction, and has an excitation arm 611 protruding out of the auxiliary bracket 22 all the time in the left-right direction; when the bracket assembly moves from the rest position to the working position, referring to fig. 9b and 10, the release element 62 actuates the actuating arm 611 of the inching pin 61 from the forward direction to the backward direction to drive the unlocking end 610 of the inching pin 61 to extend backward through the locking surface 220c into the guide portion 220, in the process, the unlocking end 610 pushes the driving portion 52 to disengage from the locking surface 220c, so that the driving portion 52 is unlocked, and then under the elastic deformation restoring force, the driving portion 52 moves from the backward direction to the forward direction along the guide portion 220 and drives the strut mechanism to change from the retracted state to the deployed state.

When the unlocking end 610 of the inching pin 61 extends backwards through the locking surface 220c into the guide 220, the third resetting piece 63 always urges the inching pin 61 to maintain the resetting tendency, i.e., the inching pin 61 has a tendency to move forward until the unlocking end 610 exits the guide 220. The third returning member 63 is preferably a spring or leaf spring connected between the inching pin 61 and the auxiliary support 22, in this embodiment a compression spring sleeved at the unlocking end 610.

Further, the release member 62 is mounted to the case 1 to be relatively slidable in the front-rear direction, and is reciprocatingly movable between an initial position to a maximum stroke position.

Specifically, the bottom wall 11 of the case 1 is provided with a stroke limiting portion 13. The stroke limiting portion 13 is preferably provided as a groove extending in the front-rear direction; the release 62 includes a Z-shaped lever body whose lower end 621 is fitted into the stroke limiter 13 and can slide back and forth along the stroke limiter 13 with respect to the case 1. When the lower end 621 moves from back to front to abut against the front end surface of the stroke limiting portion 13, the release member 62 is located at the maximum stroke position, and the release member 62 cannot move forward any more non-destructively.

The release piece 62 is arranged side by side with the bracket from left to right; referring to FIG. 8b, the release member 62 further comprises a second offset portion 623, the second offset portion 623 protruding out of the Z-shaped lever body and extending toward the bracket; the storage portion 3 or the bracket assembly is provided with a first displacement portion 24 matching with the second displacement portion 623, in this embodiment, the first displacement portion 24 is protruded on the base bracket 21 and extends toward the releasing member 62, and the first displacement portion 24 is provided with a displacement inclined surface 241.

When the bracket assembly moves from the rest position to the working position, the first offset portion 24 may abut against the second offset portion 623 to push the releasing element 62 to move forward from the initial position, after the releasing element 62 moves to the maximum stroke position, the second offset portion 623 slides along the offset inclined plane 241 to make the releasing element 62 and the bracket assembly generate relative displacement, the releasing element 62 triggers the activating arm 611 of the inching pin 61, and then the driving portion 52 is released to make the driving portion 52 drive the storage portion 3 to change into a lifted state through the supporting rod mechanism. Of course, in alternative embodiments, the offset slope 241 may be changed to be provided at the second offset portion 623 or at both the first offset portion 24 and the second offset portion 623.

Preferably, the release mechanism further comprises a second reset element connected between the release element 62 and the casing 1, said second reset element always having a tendency to return the release element 62 to said initial position when the release element 62 is moved forward out of said initial position, so that said second reset element drives the release element 62 to reset from said maximum stroke position to said initial position when said carriage assembly moves from said working position to said rest position.

Further, the second rod 42 has an actuating member 424, and the actuating member 424 is movably connected to the first end of the second rod 42. Wherein, when the carriage assembly moves from the rest position to the working position, referring to fig. 6a and 7, the driving portion 52 pushes the actuator 424 to move and pass over the actuator 424 from the front to the back; when the bracket assembly moves from the rest position to the working position, referring to fig. 8a, the driving portion 52 can abut against the actuating member 424 from back to front to drive the actuating member 424 to move from back to front, and the storage portion 3 is driven to change into the lifting state by the strut mechanism, and referring to fig. 11, the driving portion 52 can abut against the actuating member 424 from back to front to prevent the strut mechanism from returning from the unfolded state to the stowed state, so that the storage portion 3 is kept in the lifting state to prevent the storage portion 3 from returning under the action of gravity, and thus, the driving portion 52 is not only used for driving the storage portion 3 to change into the lifting state, but also prevents the storage portion 3 in the lifting state from returning under the action of gravity by the cooperation of the driving portion 52 and the actuating member 424, so as to maintain the stability of the storage portion 3 in the process of taking and putting articles by the user.

Preferably, the second strut 42 also has a stop 425 at a first end thereof; when the bracket assembly moves from the rest position to the working position, the driving portion 52 abuts against the actuating element 424 from the back to the front, and the limiting member 425 abuts against the actuating element 424 to prevent the actuating element 424 from moving relative to the first end of the second supporting rod 42.

Specifically, the actuating member 424 may be rotatably fitted into a shaft hole 4240 on a first end of the second strut 42 through a circular shaft, the rotational axis of which is perpendicular to the front-rear direction and substantially parallel to the left-right direction; when the carriage assembly moves from the rest position to the working position, the driving portion 52 pushes the actuation member 424 to rotate in a first direction (e.g., the lower end of the actuation member 424 pivots backward and upward) and to pass over the actuation member 424 from the front to the back; when the bracket assembly moves from the rest position to the working position, the limiting member 425 abuts against the actuating member 424 from front to back to prevent the actuating member 424 from rotating in the opposite direction of the first clock direction, and the driving portion 52 abuts against the actuating member 424 from back to front, so that the supporting rod mechanism drives the storage portion 3 to change into a lifting state and keep in the lifting state.

Further, the height adjustment assembly further comprises a restoring mechanism, when the storage part 3 is in the lifted state, the restoring mechanism can trigger the actuating member 424 and the driving part 52 to be disengaged from each other, so that the storage part 3 is reset under the action of gravity.

Specifically, in this embodiment, the limiting member 425 is movably disposed at the first end of the second supporting rod 42, when the storage portion 3 is in the lifted state, the limiting member 425 abuts against the actuating member 424 to limit the actuating member 424 from rotating in the opposite direction of the first clockwise direction relative to the first end of the second supporting rod 42, at this time, the restoring mechanism can push the limiting member 425 to release the limiting on the actuating member 424, so that the actuating member 424 can rotate in the opposite direction of the first clockwise direction relative to the first end of the second supporting rod 42 (for example, the lower end of the actuating member 424 rotates forward), and is disengaged from the driving portion 52, so that the driving portion 52 can further approach the second driving end 512 under the driving of the elastic member 51, and under the action of the self gravity of the storage portion 3, the supporting rod mechanism is restored from the unfolded state to the folded state, and the storage portion 3 is restored to the original state.

The first end of the second strut 42 comprises a coupling cavity, a passage 4261 communicated with the coupling cavity and an opening 4262 communicated with the coupling cavity; the position-limiting member 425 includes a position-limiting end 4251 and a coupling end 4252 fixedly disposed with the position-limiting end 4251, the coupling end 4252 is installed in the coupling cavity and at least partially protrudes out of the opening 4262, and the position-limiting end 4251 protrudes out of the first end of the second supporting rod 42 from the coupling cavity through the passage 4261 to limit the actuating member 424. When the storage portion 3 is in the lifted state, the restoring mechanism may abut against the coupling end 4252 through the opening 4262, so as to drive the limiting member 425 to move relative to the first end of the second supporting rod 42, and the limiting end 4251 retracts into the coupling cavity through the passage 4261, so as to release the limiting of the actuating member 424.

The movement direction of the limiting member 425 relative to the first end of the second rod 42 is perpendicular to the front-back direction and substantially parallel to the left-right direction.

Further, a fourth reset member 94 is disposed between the limiting member 425 and the first end of the second supporting rod 42, and the fourth reset member 94 makes the limiting member 425 always have a tendency that the limiting end 4251 thereof protrudes out of the first end of the second supporting rod 42 through the passage 4261.

Further preferably, the restoring mechanism is movably disposed on the bracket assembly or the storage portion 3, and includes an operable member 72, a restoring member 71, and a transmission member 73 connected between the operable member 72 and the restoring member 71.

Wherein, the operable element 72 is an operating rod which is arranged on the drawer door 2 in a vertically sliding manner, and the upper end thereof is exposed at the top inner edge of the drawer door 2 so as to receive the pressing operation of a user; the return element 71 is a link extending rearward from the drawer door 2, which is connected to the operable member 72 by a transmission member 73; when the upper end of the operable element 72 receives the pressing operation of the user, the operable element 72 drives the restoring element 71 to move backwards through the transmission element 73, so that the rear end of the restoring element 71 abuts against the coupling end 4252 through the opening 4262, and the driving limiting element 425 retracts into the coupling cavity through the passage 4261 to release the limiting of the actuating element 424.

Further, the transmission member 73 connects the operable member 72 and the restoring member 71, and diverts the vertical movement of the operable member 72 to be transmitted to the front-rear movement of the restoring member 71. Specifically, the transmission member 73 includes a transmission shaft 730, a first arm 731 extending out of the transmission shaft 730, and a second arm 732 extending out of the transmission shaft 730, the first arm 731 and the second arm 732 being disposed at an obtuse angle, and the first arm 731 is rotatably connected to a lower end of the operable portion, and the second arm 732 is slidably and rotatably connected to a rear end of the return member 71.

In detail, the second arm 732 is provided with a second shaft 733, the rear end of the reduction member 71 is provided with a shaft groove 710 extending vertically, and the second shaft 733 is fitted in the shaft groove 710. When the operable member 72 moves downward, the transmission member 73 rotates around the transmission shaft 730, and the second shaft 733 slides and rotates along the shaft groove 710 to drive the reduction member 71 to move backward; when the fifth returning member drives the operable member 72 to return upward, the transmission member 73 rotates about the transmission shaft 730, and the second shaft 733 slides and rotates along the shaft groove 710 to drive the returning member 71 to move forward.

In addition, the restoring mechanism further includes a fifth restoring member provided between the operable member 72 and the drawer door 2. When the operable element 72 moves downwards under the pressing of a user, the fifth resetting element enables the operable element 72 to have the tendency of moving upwards for resetting, so that when the pressing operation is removed by the user, the operable element 72 can move upwards for resetting, and then the returning element 71 is driven to move forwards for resetting, and the whole restoring mechanism is reset.

Further, the stop member 53 is movably disposed on the box 1, and when the carriage assembly moves from the working position to the rest position, that is, the carriage assembly performs the reset movement, the driving portion 52 pushes the stop member 53 from the front to the back, so that the driving portion 52 can pass over the stop member 53 from the back.

In this embodiment, the housing 1 has an avoiding groove 14, and the lower end of the stopper 53 is rotatably disposed in the avoiding groove 14 through the stopper rotating shaft 531. When the bracket assembly moves from the working position to the rest position, under the pushing of the driving portion 52, the upper end of the stopper 53 moves backward and downward to approach the inside of the slot 14, so that the driving portion 52 can get over the stopper 53 from front to back, until the driving portion 52 is disengaged from the stopper 53, and the first reset piece disposed between the box body 1 and the stopper 53 can drive the stopper 53 to reset (i.e. the upper end of the stopper 53 moves forward and upward to reset).

The first reset member is preferably a torsion spring sleeved on the stop rotating shaft 531.

Further, the bracket component also comprises a stabilizing frame 23 which is fixed at the rear part of the drawer door 2 and extends backwards, the storage part 3 is provided with a reinforcing rib 31, and when the bracket component is positioned at the standing position, the reinforcing rib 31 is pressed above the stabilizing frame 23, so that the bracket and the height adjusting component are shared to bear pressure.

In addition, preferably, for same storing portion 3, the height adjusting subassembly sets up to the symmetry two sets of that set up in the left and right sides direction, just the bracket component with height adjusting subassembly looks adaptation improves height adjusting subassembly is to storing portion 3's drive stability. In the alternative scheme, aiming at the same storage part 3, the height adjusting assembly comprises two sets of the supporting rod mechanisms and two sets of synchronizing mechanisms for connecting the supporting rod mechanisms, wherein the supporting rod mechanisms are symmetrically arranged in the left and right directions, and the supporting rod mechanisms are driven by the synchronizing mechanisms to be synchronously in the retracting state and the unfolding state to move, so that the aim of improving the driving stability of the height adjusting assembly on the storage part 3 is fulfilled.

With the specific structure of this embodiment, the whole process of returning the carriage assembly from the rest position to the working position to the rest position will be described as follows:

(1) when the bracket assembly is in the rest position

Referring to fig. 1-4 b, the strut mechanism is in the stowed state; the storing part 3 is accommodated in the accommodating chamber 10 and is in an original state, and the reinforcing rib 31 is pressed and held above the stabilizing frame 23.

The elastic member 51 is not elastically deformed, the stopper 53 is located on the forward moving path of the driving portion 52, and the actuator 424 is located behind the driving portion 52 and is not in contact with the driving portion 52 (i.e., the actuator 424 and the driving portion 52 are separated from each other).

The release member 62 is located at its initial position with its lower end 621 near the rear end face of the stroke limiter 13 and its upper end 622 on the forward movement path of the inching pin 61; and the first and

second dislocation portions

24 and 623 are separated from each other and not yet offset, the second dislocation portion 623 is located on the forward movement path of the first dislocation portion 24.

(2) When the bracket component moves from the rest position to the working position

Referring to fig. 5a, the elastic member 51 and the driving portion 52 move forward synchronously with the carriage assembly, and the driving portion 52 approaches the stop member 53 forward until it abuts against the stop member 53; referring to fig. 6a, the forward movement of the driving part 52 is stopped by the stopper 53, the corresponding forward movement of the first driving part 52 is also stopped, and the second driving end 512 moves forward synchronously with the carriage assembly, so that the first driving end 511 and the second driving end 512 gradually move away from each other, and the elastic member 51 gradually accumulates an elastic deformation restoring force; referring to fig. 6a and 7, when the stop member 53 stops the forward movement of the driving portion 52, the guiding portion 220 moves forward relative to the driving portion 52, and the driving portion 52 is sequentially engaged with the first guiding segment 220a and the second guiding segment 220b until the driving portion 52 gradually deviates from the second guiding segment 220b and is disengaged from the stop member 53; referring to fig. 8a to 9b, the driving portion 52 is locked at the locking surface 220c, and the elastic deformation restoring force of the elastic member 51 is maintained until moving forward to the working position with the carriage assembly.

And, referring to fig. 6a and 7, when the stopper 53 stops the forward movement of the driving portion 52 and the driving portion 52 slides along the guide portion 220, the driving portion 52 pushes the actuator 424 to rotate in the first direction and to pass over the actuator 424 from the front to the back.

Referring to fig. 5b and 6b, the release member 62 is maintained in its initial position, and as the carriage assembly moves forward, the inching pin 61 gradually approaches the upper section 622 of the release member 62 forward, while the first offset portion 24 gradually approaches the second offset portion 623 from back to front; when the first displacement portion 24 abuts against the second displacement portion 623, the excitation arm 611 of the inching pin 61 is just in contact or near contact with the upper section 622 of the release member 62; then, referring to fig. 8b and 9b, under the urging of the second offset portion 623 by the first offset portion 24, the releasing member 62 moves from the initial position to the front from the rear direction until the releasing member 62 moves until the lower end 622 of the releasing member abuts against the front end surface of the stroke limiting portion 13 (at this time, the releasing member 62 is located at the maximum stroke position); then, the releasing element 62 cannot move forward, and the bracket assembly continues to move forward until the working position is reached, in the process, the second offset portion 623 slides along the offset inclined surface 241 relative to the first offset portion 24, the releasing element 62 further triggers the actuating arm 611 of the micro-moving pin 61 backward, so that the unlocking end 610 of the micro-moving pin 61 passes through the locking surface 220c backward to push the driving part 52 to disengage from the locking surface 220c, referring to fig. 11, under the action of the elastic deformation restoring force, the driving part 52 moves forward from the backward direction along the guiding part 220, and pushes the actuating element 624 (limited by the limiting element 425 to move forward), the strut mechanism changes from the retracted state to the deployed state, and the storage part 3 changes from the original state to the lifted state.

(3) When the bracket assembly is located at the working position

Referring to fig. 11 to 12b, when the storage portion 3 is in the lifted state, the limiting member 425 abuts against the actuating member 424 to limit the actuating member 424 from rotating in the direction opposite to the first direction of the first pin relative to the first end of the second rod 42, and at this time, the driving portion 52 abuts against the actuating member 424 from back to front to prevent the rod mechanism from returning from the unfolded state to the retracted state, so that the storage portion 3 is kept in the lifted state to prevent the storage portion 3 from returning under the action of gravity.

(4) When the bracket component is reset from the working position to the standing position

First, referring to fig. 11 to 13, when the upper end of the operable element 72 receives the pressing operation of the user, the operable element 72 moves vertically downward, and under the driving of the transmission element 73, the restoring element 71 moves backward and the rear end thereof abuts against the coupling end 4252 through the opening 4262, so as to drive the limiting element 425 to horizontally retract into the first end of the second supporting rod 42 through the passage 4261, so as to release the limiting of the actuating element 424; the lower end of the actuating member 424 can rotate forward relative to the first end of the second rod 42, so as to disengage from the driving portion 52, the driving portion 52 can further approach the second driving end 512 under the driving of the elastic member 51, the rod mechanism returns to the retracted state from the expanded state under the self-gravity of the storage portion 3, and the storage portion 3 returns to the original state.

Then, referring to fig. 14, starting from the working position to the rest position, the driving portion 52 gradually approaches the stop 53 from front to back until contacting the stop 53, and then under the pushing of the driving portion 52, the upper end of the stop 53 approaches the avoidance groove 14 backwards and downwards to rotate, so that the driving portion 52 can cross the stop 53 from front to back; after passing over the stop 53, the drive portion 52 continues to move rearward until the carriage assembly is reset to the rest position.

In summary, the refrigerator provided in an embodiment of the present invention has the following beneficial effects: (1) when the bracket assembly moves from the rest position to the working position, the first driving end 511 and the second driving end 512 move relatively to accumulate a reset force between the first driving end 511 and the second driving end 512, and the reset force is used as a driving force to drive the storage part 3 to change the height, so that the power consumption of the traditional scheme is eliminated, the energy is saved, the consumption is reduced, and the replacement cost is low when the first driving end 511 and the second driving end 512 are damaged; (2) the driving part 52 is not only used for driving the storage part 3 to lift, but also used for cooperating with the actuating part 424 to prevent the storage part 3 in the lifted state from being reset under the action of gravity, so as to keep the stability of the storage part 3 in the process of taking and placing the object by the user.

The detailed description set forth above is merely a specific description of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include within the scope of the invention equivalent embodiments or modifications that do not depart from the technical spirit of the present invention.

Claims

1. A refrigerator, comprising:

a box body;

the height adjusting assembly comprises a support rod mechanism and a driving mechanism, the support rod mechanism is movably connected with the support assembly and the storage part respectively and comprises a second support rod, the height adjusting assembly is characterized in that the second support rod is provided with a first end which is in relative sliding connection with the support assembly or the storage part and an actuating part arranged at the first end, the driving mechanism is provided with a driving part which is movably arranged along the first direction relative to the support assembly, the driving mechanism comprises a stop part arranged on the box body, a first driving end and a second driving end matched with the first driving end, the second driving end is fixedly arranged on the support assembly or the storage part, and the driving part is fixed at the first driving end;

when the bracket assembly moves from the rest position to the working position, the second driving end moves along the first direction, the stop piece stops the movement of the driving part along the first direction, and the first driving end and the second driving end move relatively to accumulate a reset force between the first driving end and the second driving end;

when the bracket component by the position of stewing moves to during the operating position reset force effect down, the drive division supports and holds make the piece and pass through make the piece drive branch mechanism motion, branch mechanism drive storage portion is relative the bracket component changes to the lifting state, just the drive division supports and holds make the piece in order to prevent storage portion resets under the action of gravity.

2. The refrigerator of claim 1 wherein the actuator is movably connected to the first end; the height adjusting assembly further comprises a restoring mechanism, and when the storage part is in the lifting state, the restoring mechanism can trigger the actuating part and the driving part to be disconnected with each other, so that the storage part is reset under the action of gravity.

3. The refrigerator according to claim 2, wherein the second rod has a stopper movably disposed at the first end;

when the storage part is in the lifting state, the limiting part abuts against the actuating part to limit the actuating part to move relative to the first end, and the restoring mechanism can push the limiting part to enable the actuating part to move relative to the first end and to be separated from the driving part.

4. The refrigerator according to claim 3, wherein the restoring mechanism is movably disposed on the rack assembly or the storage portion, and includes an operating member, a restoring member, and a transmission member connected between the operating member and the restoring member;

5. The refrigerator according to claim 3, wherein the actuator is rotatably connected to the first end about an axis perpendicular to the first direction, and the stopper is protrudingly provided at the first end to slide in a direction parallel to the axis;

6. The refrigerator according to claim 1, wherein the driving mechanism includes an elastic member, a first end of which is provided as the first driving end, and a second end of which is provided as the second driving end;

7. The refrigerator as claimed in claim 1, wherein the stopper is movably disposed on the cabinet, and when the bracket assembly moves from the working position to the rest position, the driving portion pushes the stopper and passes over the stopper in a direction opposite to the first direction.

8. The refrigerator of claim 1, wherein the rack assembly or the storage part is provided with a guide part having a first guide section and a second guide section, the second guide section being connected to the first guide section;

9. The refrigerator of claim 8, wherein the guide part is a guide groove formed on the bracket assembly;

10. The refrigerator of claim 8, wherein the height adjustment assembly further comprises a locking mechanism and a release mechanism, the locking mechanism being provided at an extended end of the second guide section remote from the first guide section;

11. The refrigerator of claim 10, wherein the release mechanism comprises a release and a microswitch;

12. The refrigerator according to claim 11, wherein the micro switch comprises a micro pin movably disposed on the bracket assembly or the storage portion, and a third reset member connected to the micro pin;

13. The refrigerator of claim 1, wherein the cabinet encloses a receiving compartment; the bracket assembly comprises a drawer door and a bracket fixed at the rear part of the drawer door; when the bracket component is positioned at the rest position, the storage part is accommodated in the accommodating chamber; when the bracket component slides forwards to the working position, the storage part moves out of the accommodating chamber.