CN219955811U - Pull formula lifting mechanism and drawer, freezer - Google Patents

Abstract

The utility model provides a drawing type lifting mechanism, a drawer and a refrigerator, wherein the lifting mechanism comprises: the sliding rail assembly comprises a first sliding rail and a second sliding rail which is in sliding fit with the first sliding rail; and the lifting assembly bears the lifted object and comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to a first hinging part of the first sliding rail, one end of the second connecting rod is hinged to a second hinging part of the second sliding rail, the other end of the first connecting rod and the other end of the second connecting rod are hinged to each other to form a third hinging part, and the third hinging part is connected with the lifted object. Based on the technical scheme of the utility model, aiming at the design of the sliding rail structure and the connecting rod lifting structure, the corresponding lifted object of the connecting rod structure lifting is driven by pulling the sliding rail structure, so that the problem that a user needs to bend down to use due to the fact that a storage structure such as a drawer cannot be adjusted in the vertical direction can be solved.

Description

Pull formula lifting mechanism and drawer, freezer

Technical Field

The utility model relates to the technical field of drawing mechanisms, in particular to a drawing type lifting mechanism, a drawer and a refrigerator.

Background

At present, many furniture or household appliances are provided with a pull-out type storage structure, such as a drawer and other structures, and the drawer and other structures are often arranged at different positions of the furniture or household appliances, so that users can have different use experiences when using the pull-out type storage structures at different positions.

The prior art, such as CN103900319a, discloses a refrigerator, which aims to solve the problem that a user cannot easily access a storage at the bottom due to a deeper refrigerator, and a drawer type storage structure is arranged at the bottom. Obviously, when a user uses the drawer in the refrigerator disclosed by the prior art, the use experience is not good, because the user needs to bend down or squat down; the user needs to bend over or squat down for a long time when the drawer needs to be cleaned or certain objects need to be found, and the use experience is particularly poor.

The problem with the above prior art is essentially that its drawer structure can only change the position of the corresponding storage structure in the horizontal direction, while the adjustment of the position is made in the vertical direction. Therefore, the utility model provides a drawing type lifting mechanism, a drawer and a refrigerator, which can be lifted up while drawing, so that the problem that a user needs to bend down or squat down for a long time is avoided.

Disclosure of Invention

In order to solve the problem that the position of a pull type storage structure in the prior art cannot be adjusted in the vertical direction, and a user needs to bend down or squat down to use the storage structure, the utility model provides a pull type lifting mechanism, a drawer and a refrigerator.

In a first aspect, the present utility model provides a pull-type lifting mechanism, including:

the sliding rail assembly comprises a first sliding rail and a second sliding rail which is in sliding fit with the first sliding rail; and

the lifting assembly is used for bearing an object to be lifted and comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to a first hinging part of the first sliding rail, one end of the second connecting rod is hinged to a second hinging part of the second sliding rail, the other end of the first connecting rod and the other end of the second connecting rod are hinged to each other to form a third hinging part, and the third hinging part is connected with the object to be lifted; wherein, the liquid crystal display device comprises a liquid crystal display device,

in a state that the first sliding rail and the second sliding rail are folded relatively, the first hinge part and the second hinge part are positioned close to each other, and the first connecting rod and the second connecting rod are in a falling state under the action of gravity of the lifted object;

when the first sliding rail and the second sliding rail relatively slide along the direction away from each other, the first hinge part and the second hinge part are away from each other, and the first connecting rod and the second connecting rod are driven to rotate towards the vertical direction, so that the position of the third hinge part is raised.

In one embodiment, the third hinge portion is located at a position higher than the first hinge portion and/or the second hinge portion when the first link and the second link are in a laid-down state.

In one embodiment, the position of the third hinge part in the horizontal direction is located between the first hinge part and the second hinge part when the first slide rail and the second slide rail relatively slide in a direction away from each other to a stroke end point.

In one embodiment, the lifting assembly further comprises a third connecting rod, one end of the third connecting rod is hinged with the ends of the first connecting rod and the second connecting rod together to form the third hinge part, and the other end of the third connecting rod is hinged with a fourth hinge part of the lifted object.

In one embodiment, the sliding rail assembly further comprises a fixed rail, the fixed rail is arranged on the side wall of the storage cavity for accommodating the lifted object, and the first sliding rail is matched with the fixed rail and can slide relative to the fixed rail so as to enable the lifted object to move out of the storage cavity.

In one embodiment, the side surface of the fixed rail is further provided with a side plate, the side plate is provided with a sliding groove extending along the length direction of the fixed rail, and the side surface of the second sliding rail is extended with a positioning pin in sliding fit in the sliding groove;

the side plate is provided with a locking mechanism at a position corresponding to the end part of the sliding groove, the locking mechanism is used for locking the position of the locating pin in the sliding groove, and when the locating pin is positioned at the locking mechanism, the first sliding rail slides to a stroke end point along a direction away from each other relative to the fixed rail.

In one embodiment, the locking mechanism comprises:

the first locking piece is hinged to the side plate, the first locking piece is connected with a first elastic piece, the edge of the first locking piece is also provided with a locking groove and a clamping groove, and the notch of the locking groove is positioned on the sliding path of the positioning pin along the sliding groove when the first elastic piece is in a free state; and

the second locking piece is hinged to the side plate, and is connected with a second elastic piece; wherein, the liquid crystal display device comprises a liquid crystal display device,

the first locking piece can rotate under the pushing of the positioning pin sliding into the locking groove and deform the first elastic piece, so that the notch of the locking groove is staggered with the path of the sliding groove and the clamping groove is clamped with the second locking piece;

the second locking piece clamped with the clamping groove can prevent the first locking piece from rotating reversely, and the elastic force of the second elastic piece is used for keeping the clamping state of the clamping groove and the second locking piece.

In an embodiment, when the second sliding rail slides to the stroke end point along the direction of approaching to each other relative to the first sliding rail, the second sliding rail or the lifted object which descends to the initial position can press the second locking piece which is clamped with the clamping groove, so that the clamping state of the second locking piece is released.

In one embodiment, the lifting device comprises two sliding rail assemblies, wherein each sliding rail assembly is connected with at least two lifting assemblies, the two lifting assemblies of the two sliding rail assemblies respectively support two sides of an object to be lifted, and a plurality of lifting assemblies connected to the same sliding rail assembly are distributed along the track direction of the sliding rail assemblies.

In a second aspect, the present utility model provides a drawer, which includes the above-mentioned pull-type lifting mechanism and a drawer box supported by a lifting assembly of the pull-type lifting mechanism.

In a third aspect, the utility model provides a refrigerator, which comprises the drawer and a storage cavity for accommodating the drawer.

The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present utility model can be achieved.

Compared with the prior art, the pull-out lifting mechanism, the drawer and the refrigerator provided by the utility model have the following beneficial effects:

according to the drawing type lifting mechanism, the drawer and the refrigerator, based on the design of the sliding rail structure and the connecting rod lifting structure, the corresponding lifted object is driven to be lifted by the connecting rod structure through drawing of the sliding rail structure, and therefore the problem that a user needs to bend down to use due to the fact that a storage structure such as the drawer cannot be adjusted in the vertical direction can be solved.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 shows a schematic view of the lifting mechanism of the present utility model applied to a refrigerator;

FIG. 2 shows an exploded view of the construction of the lifting mechanism of the present utility model;

FIG. 3 shows a schematic view of the lifting mechanism of the present utility model during pulling (with the locking mechanism unlocked);

FIG. 4 shows a schematic view of the locking mechanism of FIG. 3 in an unlocked state;

FIG. 5 shows a schematic view of the lifting mechanism of the present utility model in a state of being pulled out (the locking mechanism is locked);

FIG. 6 is a schematic view showing the structure of the locking mechanism in the locked state of FIG. 5;

fig. 7 is a schematic view showing a state in which the lifting mechanism of the present utility model is unfolded to lift up the lifted object.

In the drawings, like parts are designated with like reference numerals. The figures are not to scale.

Reference numerals:

1-slide rail component, 11-first slide rail, 12-second slide rail, 122-locating pin, 13-fixed rail, 14-first hinge, 15-second hinge, 16-third hinge, 2-lifting component, 21-first connecting rod, 22-second connecting rod, 23-third connecting rod, 3-side plate, 31-slide groove, 4-locking mechanism, 41-first locking piece, 411-first elastic piece, 412-locking groove, 413-clamping groove, 42-second locking piece, 421-second elastic piece, 5-lifted object, 51-fourth hinge.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

The embodiment of the utility model provides a drawing type lifting mechanism, which comprises the following components:

the sliding rail assembly 1, the sliding rail assembly 1 comprises a first sliding rail 11 and a second sliding rail 12 which is in sliding fit with the first sliding rail 11; and

the lifting assembly 2 is used for bearing the lifted object 5, the lifting assembly 2 comprises a first connecting rod 21 and a second connecting rod 22, one end of the first connecting rod 21 is hinged to a first hinging part 14 of the first sliding rail 11, one end of the second connecting rod 22 is hinged to a second hinging part 15 of the second sliding rail 12, the other end of the first connecting rod 21 and the other end of the second connecting rod 22 are hinged to each other to form a third hinging part 16, and the third hinging part 16 is connected with the lifted object 5; wherein, the liquid crystal display device comprises a liquid crystal display device,

in a state that the first slide rail 11 and the second slide rail 12 are relatively folded, the first hinge part 14 and the second hinge part 15 are positioned close to each other, and the first connecting rod 21 and the second connecting rod 22 are in a falling state under the gravity action of the lifted object 5;

when the first slide rail 11 and the second slide rail 12 slide relatively in a direction away from each other, the first hinge portion 14 and the second hinge portion 15 move away from each other, and drive the first link 21 and the second link 22 to rotate in an upright direction, so that the position of the third hinge portion 16 is raised.

Specifically, as shown in fig. 2 of the accompanying drawings, the lifting mechanism of the utility model firstly comprises a sliding rail assembly 1 for realizing push-pull, wherein a first sliding rail 11 and a second sliding rail 12 in the sliding rail assembly 1 can slide relatively; the lifting assembly 2 is driven by the sliding assembly to realize lifting, one ends of a first connecting rod 21 and a second connecting rod 22 in the lifting assembly 2 are respectively hinged to a first hinging part 14 and a second hinging part 15 of the first sliding rail 11 and the second sliding rail 12, and the other ends of the first connecting rod 21 and the second connecting rod 22 are mutually hinged to form a third hinging part 16; the lifted object 5 is connected to the third hinge 16.

In the initial state, the first sliding rail 11 and the second sliding rail 12 are folded relatively, that is, the positions of the first sliding rail 11 and the second sliding rail in the horizontal direction are overlapped with each other, as shown in fig. 3 and 5 of the accompanying drawings; the first hinge part 14 and the second hinge part 15 are now located close to each other, and the whole can be regarded as a hinge support point. Then there is only one hinge support point for the linkage of the lifting assembly 2, and there is obviously no stable support structure for the lifted object 5; further, under the gravity action of the lifted object 5, the first connecting rod 21 and the second connecting rod 22 are folded (the folding means that the included angle corresponding to the third hinge portion 16 tends to be 0 °) and naturally laid down, the structure of the laid down state can refer to fig. 2, at this time, the third hinge portion 16 is in a low position, the lifted object 5 is in an initial state of not being lifted, and the lifted object 5 and the whole lifting mechanism can be accommodated in the storage cavity of the corresponding furniture or electrical equipment.

When the lifted object 5 needs to be lifted, the first sliding rail 11 or the second sliding rail 12 is pulled to make the first hinging portion 14 and the second hinging portion 15 relatively move, so that the first hinging portion 14 and the second hinging portion 15 are separated from each other, the distance between the first hinging portion 14 and the second hinging portion 15 is increased, the lengths of the first connecting rod 21 and the second connecting rod 22 are unchanged, in order to adapt to the moving trend of the first hinging portion 14 and the second hinging portion 15, the first connecting rod 21 and the second connecting rod 22 are unfolded relatively to each other (unfolding means that the first connecting rod 21 and the second connecting rod 22 rotate towards the vertical direction and the corresponding included angle of the third hinging portion 16 is gradually increased), and at the moment, the position of the third hinging portion 16 is gradually increased, so that the lifted object 5 is driven to be lifted, and accordingly the lifted object 5 is lifted based on the relative movement of the first sliding rail 11 and the second sliding rail 12 is achieved.

It should be noted that, before the lifted object 5 is lifted, the lifted object 5 needs to be moved out of the corresponding storage cavity integrally by sliding, which may be achieved by sliding the sliding structure in the opposite storage cavity of the slide rail assembly 1.

In one embodiment, the third hinge part 16 is located at a higher level than the first hinge part 14 and/or the second hinge part 15 in the laid-down state of the first link 21 and the second link 22.

In particular, since the lifting assembly 2 is driven to move in the vertical direction by the horizontal force, the positional relationship of the corresponding structure needs to be considered, and in particular, the existence of dead points of the linkage mechanism is avoided. Referring to fig. 2 of the drawings, the lifting power of the lifting assembly 2 is from the horizontal sliding of the sliding rail assembly 1, either the first sliding rail 11 is used as the driving member or the second sliding rail 12 is used as the driving member, and further in the lifting assembly 2, either the first connecting rod 21 is used as the driving member for driving the unfolding, or the second connecting rod 22 is used as the driving member for driving the unfolding. Therefore, referring to the link structure of fig. 2 of the drawings, first, the first hinge part 14, the second hinge part 15 and the third hinge part 16 cannot be at the same horizontal level, because such horizontal force forms dead points along the length direction of all links themselves in the laid-down state, and cannot drive the link structure to rotate in the vertical direction.

It is necessary to have the third hinge part 16 in the laid-down state be at least higher than the first hinge part 14 or the second hinge part 15, i.e. at least one of the first link 21 and the second link 22 is not completely horizontal in the laid-down state, but has an inclined state with an angle, such as the second link 22 in fig. 2 of the drawings. Of course, it is to be noted that, in particular, which link is inclined and the direction of inclination thereof, the relative displacement direction of the first slide rail 11 and the second slide rail 12 is considered, and, in essence, when a tensile force generated in the horizontal direction by the relative sliding of the first slide rail 11 and the second slide rail 12 acts on the inclined link, the direction of the component force in the longitudinal direction perpendicular to the inclined link should be upward.

In one embodiment, when the first slide rail 11 and the second slide rail 12 relatively slide in a direction away from each other to the stroke end, the position of the third hinge portion 16 in the horizontal direction is located between the first hinge portion 14 and the second hinge portion 15.

Specifically, since the present utility model uses the expansion of the first link 21 and the second link 22 to realize the lifting of the lifted object 5, in consideration of stability and self-locking property of the lifted structure, the position of the third hinge 16 in the horizontal direction needs to be located between the first hinge 14 and the second hinge 15, so that the gravity of the lifted object 5 acts on the first link 21 and the second link 22 through the third hinge 16, and the first link 21 and the second link 22 have a movement tendency of further expansion (that is, the distance between the first hinge 14 and the second hinge 15 is further increased), but at this time, the first slide rail 11 and the second slide rail 12 relatively slide along the direction away from each other to reach the stroke end, so that the distance between the first hinge 14 and the second hinge 15 cannot be further increased, and the self-locking of the links is realized, thereby ensuring the lifted object 5 to be highly stable.

In one embodiment, the lifting assembly 2 further comprises a third link 23, one end of the third link 23 is hinged together with the ends of the first link 21 and the second link 22 to form a third hinge portion 16, and the other end of the third link 23 is hinged to a fourth hinge portion 51 of the lifted object 5.

Specifically, the third hinge 16 is connected to the lifted object 5 through a third link 23, and the third link 23 is provided for the purpose of enlarging the height at which the lifted object 5 is lifted. Specifically, as shown in fig. 2 of the drawings, in the laid-down state, the height of the end of the third link 23 for hinging with the lifted object 5 to form the fourth hinging portion 51 is substantially identical to the height of the third hinging portion 16, and is only slightly higher than the third hinging portion 16; as shown in fig. 7, when the link structure is unfolded, the first link 21 applies a pulling force to the third hinge 16, so that the second link 22 and the third link 23 are unfolded relatively, and the height of the fourth hinge 51 between the distal end of the third link 23 and the object 5 to be lifted is further raised to be higher than the third hinge 16. Therefore, the provision of the third link 23 can further increase the lifting height compared to the case where the third hinge 16 is directly connected to the lifted object 5, thereby amplifying the lifting effect on the lifted object 5.

In one embodiment, the sliding rail assembly 1 further includes a fixed rail 13, the fixed rail 13 is disposed on a sidewall of the storage cavity for accommodating the lifted object 5, and the first sliding rail 11 is matched with the fixed rail 13 and can slide relative to the fixed rail 13, so that the lifted object 5 moves out of the storage cavity.

Specifically, as shown in fig. 2 of the drawings, the fixed rail 13 in the sliding rail assembly 1 is matched with the first sliding rail 11, and the fixed rail 13 is arranged on the side wall of the storage cavity on the corresponding device shown in fig. 1 of the drawings, so that before the lifted object 5 is lifted, the lifted object 5 is integrally moved out of the corresponding storage cavity in a sliding manner, and enough space is provided for lifting the lifted object 5.

In one embodiment, the side surface of the fixed rail 13 is further provided with a side plate 3, the side plate 3 is provided with a sliding groove 31 extending along the length direction of the fixed rail 13, and the side surface of the second sliding rail 12 is extended with a positioning pin 122 in sliding fit in the sliding groove 31;

wherein, the side plate 3 is provided with a locking mechanism 4 at a position corresponding to the end of the chute 31, the locking mechanism 4 is used for locking the position of the positioning pin 122 in the chute 31, and when the positioning pin 122 is positioned at the locking mechanism 4, the first sliding rail 11 slides to the stroke end point along the direction away from each other relative to the fixed rail 13.

Specifically, the cooperation of the positioning pin 122 with the chute 31 has two functions: in the first aspect, the end of travel is defined for the sliding of the second slide rail 12, because the first slide rail 11 and the second slide rail 12 need to slide relatively for the lifting of the lifted object 5, and further, the second slide rail 12 can slide further by limiting the sliding of the second slide rail 12 with the positioning pin 122 and the sliding slot 31 in this embodiment, so as to realize the sliding of the first slide rail 11 and the second slide rail 12 relatively. In the second aspect, the locking mechanism 4 at the chute 31 is further utilized to realize the opposite relative sliding of the first sliding rail 11 and the second sliding rail 12, so that the lifted object 5 can be lowered to the initial position, and is convenient to be stored in the storage cavity again, namely, when the first sliding rail 11 slides reversely, the second sliding rail 12 is kept stationary under the action of the locking mechanism 4, and thus the opposite relative sliding of the first sliding rail 11 and the second sliding rail 12 is realized.

In one embodiment, the locking mechanism 4 comprises:

the first locking piece 41 is hinged to the side plate 3, the first locking piece 41 is connected with a first elastic piece 411, the edge of the first locking piece 41 is also provided with a locking groove 412 and a clamping groove 413, and the notch of the locking groove 412 is positioned on the sliding path of the positioning pin 122 along the sliding groove 31 when the first elastic piece 411 is in a free state; and

a second locking member 42 hinged to the side plate 3, the second locking member 42 being connected to a second elastic member 421; wherein, the liquid crystal display device comprises a liquid crystal display device,

the first locking piece 41 can rotate and deform the first elastic piece 411 under the pushing of the positioning pin 122 sliding into the locking groove 412, so that the notch of the locking groove 412 is staggered with the path of the sliding groove 31 and the clamping groove 413 is clamped with the second locking piece 42;

the second locking member 42 engaged with the engaging groove 413 can prevent the first locking member 41 from rotating reversely, and the elastic force of the second elastic member 421 is used to maintain the engaged state of the engaging groove 413 and the second locking member 42.

Specifically, as shown in fig. 3 and 4 of the drawings, the locking mechanism 4 in the unlocked state is in a completely separated state from the second locking member 42 by the first elastic member 411 when the positioning pin 122 does not reach the locking mechanism 4 yet, the locking groove 412 of the first locking member 41 is in a state of being inclined relative to the extending direction of the chute 31, and the notch of the locking groove 412 is on the path along which the positioning pin 122 slides along the chute 31.

As shown in fig. 5 and 6 of the drawings, the locking mechanism 4 in the locked state pushes the first locking member 41 to rotate around the hinge point into contact with the second locking member 42 while stretching the first elastic member 411, at the point where the positioning pin 122 moves to the locking mechanism 4, it enters through the notch. The first locking piece 41 is contacted with the outer side of the clamping part extending out of the main body of the second locking piece 42 at the first time, the outer side of the clamping part is provided with an inclined plane, the first locking piece 41 can be further rotated to the main body of the second locking piece 42 by the local deformation of the guiding part of the inclined plane, the clamping groove 413 of the first locking piece 41 is used for accommodating the main body of the second locking piece 42, after the main body of the second locking piece 42 enters the clamping groove 413, the clamping teeth at the inner side of the clamping part are buckled on the first locking piece 41, and the buckling state is kept by combining the action of the second elastic piece 421, so that the first locking piece 41 cannot reversely rotate, and the locking state is kept. At this time, the notch of the locking slot 412 is also staggered from the path of the chute 31, so as to lock the position of the positioning pin 122.

Based on the above structure of the above locking mechanism 4, when the first slide rail 11 moves reversely, the second slide rail 12 is locked by the positioning pin 122, and keeps relatively static with the side plate 3, so that the second slide rail 12 is not driven by the reverse movement of the first slide rail 11, and the first slide rail 11 and the second slide rail 12 can slide relatively; the process is represented by that the position of the lifted object 5 in the horizontal direction is unchanged (kept outside the storage cavity) and the height is continuously lowered to the initial position.

In one embodiment, when the second slide rail 12 slides to the end of the travel along the direction approaching to the first slide rail 11, the second slide rail 12 or the lifted object 5 lowered to the initial position can press the second locking member 42 engaged with the engaging groove 413 to release the engaged state of the second locking member 42.

Specifically, after the first slide rail 11 moves reversely to the lifted object 5 to be continuously lowered to the initial position, the slide rail assembly 1, the lifting assembly 2 and the lifted object 5 enter the storage cavity together when needed, and the second locking member 42 needs to be contacted to lock the first locking member 41, so that the first locking member 41 releases the positioning pin 122. Further, a corresponding pressing structure is disposed on the lifted object 5 or the first sliding rail 11, so that when the first sliding rail 11 further slides reversely, the pressing structure can press the second locking piece 42 (as shown in fig. 6 of the drawings, from above) to rotate a certain angle, so that the locking portion of the second locking piece 42 releases the first locking piece 41, the first locking piece 41 reversely rotates and resets under the action of the first elastic piece 411, and the positioning pin 122 can be removed from the locking groove 412.

In one embodiment, the lifting device comprises two sliding rail assemblies 1, at least two lifting assemblies 2 are connected to each sliding rail assembly 1, the lifting assemblies 2 of the two sliding rail assemblies 1 respectively support two sides of a lifted object 5, and a plurality of lifting assemblies 2 connected to the same sliding rail assembly 1 are distributed along the track direction of the sliding rail assemblies 1.

In particular, fig. 2 to 7 of the drawings illustrate only one rail assembly 1 and two lifting assemblies 2 thereon, namely, the structure of one side of the lifted object 5, and the same structure is also provided on the other side of the lifted object 5, so that the symmetrical structure of the rail assemblies 1 on both sides and the structure of the lifting mechanism composed of the plurality of lifting assemblies 2 are more stable.

The embodiment of the utility model also provides a drawer, which comprises the drawing type lifting mechanism and a drawer box supported by a lifting component of the drawing type lifting mechanism, and further has all the technical effects.

The embodiment of the utility model also provides a refrigerator which comprises the drawer and a storage cavity for accommodating the drawer, and further has all technical effects.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present utility model. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (11)

1. A pull-out lifting mechanism, comprising:

the sliding rail assembly comprises a first sliding rail and a second sliding rail which is in sliding fit with the first sliding rail; and

the lifting assembly is used for bearing an object to be lifted and comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to a first hinging part of the first sliding rail, one end of the second connecting rod is hinged to a second hinging part of the second sliding rail, the other end of the first connecting rod and the other end of the second connecting rod are hinged to each other to form a third hinging part, and the third hinging part is connected with the object to be lifted; wherein, the liquid crystal display device comprises a liquid crystal display device,

in a state that the first sliding rail and the second sliding rail are folded relatively, the first hinge part and the second hinge part are positioned close to each other, and the first connecting rod and the second connecting rod are in a falling state under the action of gravity of the lifted object;

when the first sliding rail and the second sliding rail relatively slide along the direction away from each other, the first hinge part and the second hinge part are away from each other, and the first connecting rod and the second connecting rod are driven to rotate towards the vertical direction, so that the position of the third hinge part is raised.

2. The pull-out and lift mechanism of claim 1, wherein the third hinge is located at a higher level than the first hinge and/or the second hinge when the first link and the second link are in a reclined state.

3. The pull-out and lift mechanism of claim 1 or 2, wherein the third hinge is positioned horizontally between the first hinge and the second hinge when the first slide rail and the second slide rail are slid relative to each other in a direction away from each other to an end of travel.

4. The pull-out lifting mechanism according to claim 1, wherein the lifting assembly further comprises a third link, one end of the third link is hinged with the ends of the first link and the second link together to form the third hinge, and the other end of the third link is hinged with a fourth hinge of the lifted object.

5. The pull-out and lift mechanism of claim 1, wherein the slide assembly further comprises a fixed rail disposed on a sidewall of the storage cavity that receives the lifted object, the first slide rail being mated to the fixed rail and being slidable relative to the fixed rail to move the lifted object out of the storage cavity.

6. The pull-out and push-up mechanism of claim 5, wherein the side surface of the fixed rail is further provided with a side plate, the side plate is provided with a sliding groove extending along the length direction of the fixed rail, and the side surface of the second sliding rail is extended with a positioning pin in sliding fit in the sliding groove;

the side plate is provided with a locking mechanism at a position corresponding to the end part of the sliding groove, the locking mechanism is used for locking the position of the locating pin in the sliding groove, and when the locating pin is positioned at the locking mechanism, the first sliding rail slides to a stroke end point along a direction away from each other relative to the fixed rail.

7. The pull-up lifting mechanism of claim 6, wherein the locking mechanism comprises:

the first locking piece is hinged to the side plate, the first locking piece is connected with a first elastic piece, the edge of the first locking piece is also provided with a locking groove and a clamping groove, and the notch of the locking groove is positioned on the sliding path of the positioning pin along the sliding groove when the first elastic piece is in a free state; and

the second locking piece is hinged to the side plate, and is connected with a second elastic piece; wherein, the liquid crystal display device comprises a liquid crystal display device,

the first locking piece can rotate under the pushing of the positioning pin sliding into the locking groove and deform the first elastic piece, so that the notch of the locking groove is staggered with the path of the sliding groove and the clamping groove is clamped with the second locking piece;

the second locking piece clamped with the clamping groove can prevent the first locking piece from rotating reversely, and the elastic force of the second elastic piece is used for keeping the clamping state of the clamping groove and the second locking piece.

8. The pull-out lifting mechanism according to claim 7, wherein when the second slide rail slides to a stroke end in a direction approaching each other with respect to the first slide rail, the second slide rail or the lifted object lowered to the initial position can press the second locking piece engaged with the engaging groove to release the engaged state of the second locking piece.

9. The pull-out lifting mechanism according to claim 1, comprising two slide rail assemblies, wherein each slide rail assembly is connected with at least two lifting assemblies, the lifting assemblies of the two slide rail assemblies respectively support two sides of an object to be lifted, and a plurality of lifting assemblies connected to the same slide rail assembly are distributed along the track direction of the slide rail assemblies.

10. A drawer comprising a pull-up lifting mechanism as claimed in any one of claims 1 to 9 and a drawer box supported by a lifting assembly of the pull-up lifting mechanism.

11. A refrigerator comprising a drawer according to claim 10 and a storage compartment for receiving the drawer.