CN109506414B

CN109506414B - Liftable drawer and refrigerator

Info

Publication number: CN109506414B
Application number: CN201811558657.4A
Authority: CN
Inventors: 陈远; 葛鹏; 牛树超
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-10-13
Anticipated expiration: 2038-12-19
Also published as: CN109506414A

Abstract

The invention relates to the field of driving, in particular to a liftable drawer and a refrigerator. In the lifting structure, the first end of the first swing rod and the first end of the second swing rod can be rotatably connected to the supporting seat, the second end of the first swing rod and the second end of the second swing rod can be rotatably connected to the movable seat, and the movable seat is provided with an installation position of an object to be lifted; the locking assembly is connected with the lifting assembly, when the locking assembly is opened, the movable seat is in a state of being capable of lifting up and down, and when the locking assembly is locked, the position of the movable seat is locked. The liftable structure is applied to the storage space and is driven through the liftable structure. When the storage space is applied to the refrigerator, the refrigerator door body and the drawer are lifted together, the actions are continuous, and the operation time is reduced by combining the horizontal pulling-out and lifting processes; the technology also provides a self-locking scheme for self-locking the drawer and the door body at a specified height, and a user only needs to hold the handle for operation, so that the operation is convenient.

Description

Liftable drawer and refrigerator

Technical Field

The invention relates to the field of driving, in particular to a liftable drawer and a refrigerator.

Background

A plurality of storage spaces in the market at present often have the position too high, too low, influence and place the operation, need use the elevating means or bend over the operation, can appear many unsafe factors to seriously influence healthy. Taking french type refrigerator as an example, the freezing chamber is generally placed at the bottom and has a large volume. When the user uses it to operate, need bow, it is poor to use experience when long-time arrangement especially.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide a liftable drawer and a refrigerator, and at least one problem is solved.

(II) technical scheme

In order to solve the technical problem, the invention provides a liftable drawer, wherein a slide rail is arranged on the side wall of a box body of the liftable drawer, liftable structures are arranged on the left side edge and the right side edge of the box body, each liftable structure comprises a lifting assembly, a supporting seat and a locking assembly, and each lifting assembly comprises: the first swing rod, the second swing rod and the movable seat; the first end of the first swing rod and the first end of the second swing rod can be rotatably connected to the supporting seat, and the second end of the first swing rod and the second end of the second swing rod can be rotatably connected to the movable seat; the locking assembly is connected with the lifting assembly, when the locking assembly is opened, the movable seat is in a state of being capable of lifting up and down, and when the locking assembly is locked, the position of the movable seat is locked; the impact sliding block on the inner side surface of the movable seat slides on the sliding rail, and the supporting seat of the lifting structure is arranged on the upper portion of the side edge of the lifting drawer.

In some embodiments, preferably, the locking assembly comprises: the first end of the self-locking rod is rotatably connected with the first oscillating bar; the second end of self-locking lever sets up from the lock post, the tip that removes the seat and connect first pendulum rod sets up from the locked groove, works as when removing the seat and being in lowest, the auto-lock post card is gone into in the locked groove, works as remove the seat and be in when lowest top, the auto-lock post roll-off from the locked groove.

In some embodiments, preferably, the movable seat is further provided with a slidable impact slider at the self-locking groove, the impact slider slides between the self-locking columns close to and far away from the self-locking groove, when the self-locking columns are impacted by the impact slider, the self-locking columns slide out of the self-locking groove, and the sliding-out direction is in the plane of the self-locking groove.

In some embodiments, preferably, the movable seat is provided with an arc-shaped edge at the self-locking groove, the arc-shaped edge extends to the notch of the self-locking groove, and when the movable seat moves upwards from the lowest position, the self-locking column rotates close to the arc-shaped edge.

In some embodiments, preferably, a limit buckle is disposed on the first swing rod, a gap is provided between an inner side surface of the limit buckle and the first swing rod to accommodate the self-locking lever, and when the movable seat is located at the lowest position, the self-locking lever is located in the gap.

In some embodiments, preferably, the liftable structure further includes: the first end of the transmission rod is fixedly connected to the first end of the first swing rod, the transmission rod and the first swing rod form a connecting rod capable of rotating synchronously, and the second end of the transmission rod is rotatably connected with the driving output end of the air supporting rod.

In some embodiments, preferably, a stop is disposed on the supporting seat, and the stop is located on a rotation path of the second swing link.

In some embodiments, preferably, a mounting point of the first end of the first oscillating bar on the support seat is vertically staggered with a mounting point of the first end of the second oscillating bar on the support seat.

In some embodiments, preferably, the liftable structure further includes: the locking piece is rotatably arranged on the supporting seat, two teeth are respectively arranged at two ends of the locking piece, and each two teeth form a locking notch; the first swing rod is provided with a plurality of correcting blocks, and the first swing rod is also provided with a locking block; the first swing rod is positioned on a rotating path of the correcting block rotating along with the first swing rod; when the movable seat is at the highest position, the first end of the locking block is sunk into the locking notch, and the locking notch with the locking block sunk is the highest point of the locking piece.

In some embodiments, preferably, the liftable structure further includes: the locking assembly comprises a locking piece, a locking block and more than one correcting block, the locking piece is rotatably arranged on the supporting seat, and the correcting block and the locking block are fixedly arranged on the movable seat;

the locking piece is positioned on a path through which the correcting block rotates along with the second swing rod, and rotates when contacting with the correcting block in the upward rotation of the movable seat, and a yielding and vacancy avoiding part is arranged at the position where the locking piece contacts with the correcting block in the downward rotation of the movable seat;

the locking block is positioned on a rotating path of the locking piece, and when the moving seat is positioned at a preset height, the locking block and the locking piece are subjected to displacement interference and self-locking; when the movable seat descends, the locking block and the locking piece do not interfere with each other.

In some embodiments, preferably, an end surface of the lock block close to one end of the lock member is a circular arc-shaped end surface; when the locking block sinks into the locking notch of the locking piece, the arc-shaped end face of the locking block is tangent to the inner side face of the locking notch above the locking block.

In some embodiments, preferably, the second swing links at the left and right sides of the drawer are connected into a common moving whole through a synchronous rod; and/or a stopping lug is arranged on the slide way of the slide rail.

In some embodiments, preferably, when the stopping protrusion is disposed on the sliding track of the sliding rail, the inner side surface of the impact slider is provided with an inclined sliding groove for accommodating the stopping protrusion, and the inclined sliding groove is provided with an upward or downward inflection point at the tail end.

The invention also provides a refrigerator, wherein the lifting drawer is arranged in the refrigerating chamber of the refrigerator.

(III) advantageous effects

According to the technical scheme provided by the invention, the first swing rod and the second swing rod can be rotatably connected with the supporting seat and the moving seat to form a four-bar structure, after the force is applied, the first swing rod and the second swing rod rotate relative to the supporting seat and the moving seat to drive the moving seat to be close to or far away from the height of the supporting seat, and the object to be lifted is driven to move by the near moving seat. Simultaneously, lifting unit and locking subassembly are connected, and when locking subassembly was opened, the seat that removes can freely oscilaltion, when locking subassembly locking, removed the position locking of seat to can avoid removing the unexpected lift of seat, conveniently remove the seat and keep the position stable under certain concrete height. Therefore, the drawer can be lifted and lowered along with the drawer. And after the horizontal drawing is carried out to a certain position, the horizontal movement and the lifting can be simultaneously carried out.

Drawings

FIG. 1 is a schematic view of a movable base at the lowest position in a liftable drawer according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the movable seat at the highest position in the liftable drawer in FIG. 2 according to the present invention;

FIG. 3 is a schematic structural view of a liftable box in one embodiment of the present invention;

FIG. 4 is a schematic view of a bump stop slider according to an embodiment of the present invention;

FIG. 5 is a schematic illustration of a position of the locking structure in accordance with an embodiment of the present invention;

FIG. 6 is a schematic two-position configuration of a locking mechanism in accordance with an embodiment of the present invention;

FIG. 7 is a three-position structural schematic of a locking structure in accordance with an embodiment of the present invention;

FIG. 8 is a four-position structural schematic of a locking structure in accordance with an embodiment of the present invention;

FIG. 9 is a five-position structural schematic of a locking structure in accordance with an embodiment of the present invention;

FIG. 10 is a six-position structural schematic of a locking structure in accordance with an embodiment of the present invention;

FIG. 11 is a schematic diagram of the seven positions of the detent structure in one embodiment of the present invention;

FIG. 12 is a schematic view of an eight position latch configuration in accordance with an embodiment of the present invention;

FIG. 13 is a schematic structural view of a liftable cabinet of a refrigerator in the lowest position according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a liftable cabinet of a refrigerator in the highest position according to an embodiment of the invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The terms "first", "second", "third" and "fourth" do not denote any order or sequence relationship, but are merely used for convenience of description. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. "Current" is the time at which an action is performed, multiple occurrences of which are recorded in real time over time.

The invention provides a liftable drawer and a refrigerator, which aim to solve the problem that when an object is placed in a box body of an ice making chamber at the lower part of the refrigerator, the object can be stooped for a long time.

Products, methods, and the like will be described in detail below with reference to basic designs, extended designs, and alternative designs.

A kind of liftable drawer, as shown in fig. 1-14, its side wall of container body sets up the slide rail 34a, the left and right sides edge of the container body is furnished with the liftable structure, the liftable structure it includes lifting unit, supporting seat 23 and locking assembly, the lifting unit includes: the first swing link 24, the second swing link 22 and the movable seat 21; wherein, the first end of the first swing link 24 and the first end of the second swing link 22 can be rotatably connected to the supporting seat 23, the second end of the first swing link 24 and the second end of the second swing link 22 can be rotatably connected to the movable seat 21, and the movable seat 21 is provided with an installation position of an object to be lifted; the locking assembly is connected with the lifting assembly, when the locking assembly is opened, the movable seat 21 is in a state of being capable of lifting up and down, and when the locking assembly is locked, the position of the movable seat 21 is locked. The impact slide block 32a on the inner side of the moving seat 21 slides on the slide rail 34a, and the support seat 23 of the lifting structure is installed on the upper part of the side edge of the lifting drawer.

The sliding rail 34a is installed on the side wall of the drawer box, the impact slider 32a on the movable base 21 slides on the sliding rail 34a, when the drawer is pulled, the self-locking structure is opened, and a force is applied to the drawer, so that the drawer is promoted to ascend to a preset position along an arc.

In the technology, the supporting seat 23 is a fixed fulcrum, the lifting assembly is lifted up and down relative to the supporting seat 23, and in use, the supporting seat 23 can be used for being mounted on a fixed object and used for connecting a lifting structure with the fixed object. Wherein the first swing link 24 and the second swing link 22 of the lifting assembly are rotatably mounted on the supporting seat 23 and the movable seat 21, such as by inserting rivets into rivet holes for rotation. The first swing link 24, the second swing link 22, the support base 23 and the movable base 21 form a link structure.

In order to prevent the movable seat 21 from exceeding the height of the support seat 23, a stop is provided on the support seat 23, which stop is located on the path of rotation of the second swing link 22. When the second swing link 22 swings to the stop, the second swing link stops rising. In addition, in order to avoid position interference between the first swing link 24 and the second swing link 22, the mounting point of the first end of the first swing link 24 on the support seat 23 and the mounting point of the first end of the second swing link 22 on the support seat 23 are staggered up and down. And the mounting point of the first swing link 24 is higher than that of the second swing link 22.

Wherein, the locking component can adopt a self-locking rod 25, which is arranged between the supporting seat 23 and the moving seat 21, and the first end of the self-locking rod 25 can be rotatably connected with the first swing rod 24; the second end of the self-locking rod 25 is provided with a self-locking column 25a, the end part of the movable seat 21 connected with the first swing rod 24 is provided with a self-locking groove, when the movable seat 21 is at the lowest position, the self-locking column 25a is clamped into the self-locking groove, and when the movable seat 21 is above the lowest position, the self-locking column 25a slides out of the self-locking groove. When the self-locking column 25a is clamped into the self-locking groove, the relative position between the first swing rod 24 and the movable seat 21 is locked, and the movable seat 21 cannot lift; when the self-locking post 25a is disengaged from the self-locking groove, the relative position between the first swing link 24 and the movable base 21 can be freely adjusted, and the movable base 21 can freely lift and lower along with the first swing link 24 and the second swing link 22.

When the self-locking column 25a is separated from the self-locking groove and swings with the first swing rod 24, in order to improve the stability of the swing, an arc-shaped edge is arranged on a path along which the self-locking column 25a swings, similarly, the self-locking column 25a moves and recedes, and when the moving seat 21 moves upwards from the lowest position, the self-locking column 25a can slide along the arc-shaped edge after being separated from the self-locking groove, and the arc-shaped edge extends to the notch of the self-locking groove.

The self-locking column 25a can be pushed to be separated from the self-locking groove by external force, such as: the striking slider 32a is arranged and moves to the self-locking column 25a to strike the self-locking column 25a out of the self-locking groove. The striking slider 32a can slide between the self-locking columns 25a close to and far away from the self-locking grooves, and when the self-locking columns 25a are struck by the striking slider 32a, the self-locking columns 25a slide out of the self-locking grooves, and the sliding-out direction is in the plane of the self-locking grooves. When the striking slider 32a contacts the self-locking stud 25a, the self-locking stud 25a moves from the bottom of the groove to the notch in the plane of the self-locking groove and finally disengages from the self-locking groove because the self-locking stud 25a has no resistance at the notch of the self-locking groove.

In addition, in order to make the self-locking column 25a separate from the self-locking groove in the plane direction of the self-locking groove and still be on the plane of the self-locking groove, in some embodiments, the first swing link 24 is provided with a limit buckle 24a, and a gap is provided between the inner side surface of the limit buckle 24a and the first swing link 24 to accommodate the self-locking rod 25, and when the movable seat 21 is at the lowest position, the self-locking rod 25 is in the gap to limit the self-locking rod 25 from shaking in the direction of the self-locking groove.

Based on the above design, when the impact slider 32a impacts the self-locking post 25a, the self-locking post 25a slides out of the self-locking groove in the plane of the self-locking groove under the action of the limit buckle 24a, the first swing link 24, the second swing link 22 and the movable seat 21 are subjected to external force, respectively rotate along the rotatable connecting member, the respective mutual angles change, and the movable seat 21 moves towards the height of the supporting seat 23.

In order to save the driving force for swinging the first swing link 24, the second swing link 22 and the movable seat 21, in some embodiments, an air supporting assembly is disposed between the first swing link 24 and the supporting seat 23 (or other fixed objects), the air supporting assembly includes an air supporting rod 27 and a driving rod 24c, a first end of the driving rod 24c is fixedly connected to a first end of the first swing link 24, the driving rod 24c and the first swing link 24 form a link rotating synchronously, a second end of the driving rod 24c is fixedly connected to a driving output end of the air supporting rod 27, and a connecting rod (such as a rivet) rotatably connected penetrates through the connection. The transmission rod 24c and the first swing link 24 form an interlocked link. The second end of the transmission rod 24c is rotatably connected to the drive output of the gas strut 27. When the second swing link 22 and the first swing link 24 swing, the transmission rod 24c is pulled, the transmission rod 24c pulls the air supporting rod 27, and the air cylinder of the air supporting rod 27 applies thrust outwards to reduce the driving force of lifting.

In order to facilitate the object to be lifted to stay at the preset height, the lifting structure is further provided with a locking assembly, the locking assembly comprises a locking piece 40, a locking block 22b and more than one correcting block 22a, the locking piece 40 is rotatably arranged on the supporting seat 23, and the correcting block 22a and the locking block 22b are fixedly arranged on the second swing rod 22;

the locking piece 40 is positioned on a path through which the correcting block 22a rotates along with the second swing rod 22, and in the upward rotation of the movable seat 21, when the locking piece 40 contacts the correcting block 22a, the locking piece rotates, and in the downward rotation of the movable seat 21, a position avoiding part is arranged at the position where the locking piece 40 contacts the correcting block 22 a;

when the lock block 22b is located on the path of the rotation of the lock member 40 and the lock block 22b contacts the lock member 40, the lock block 22b falls into the lock notch of the lock member 40.

The locking block 22b is positioned on the rotating path of the locking piece 40, and when the moving seat 21 is positioned at the pre-placing height, the locking block 22b and the locking piece 40 generate displacement interference and are self-locked; when the movable seat 21 descends, the locking block 22b and the locking member 40 do not interfere with each other.

In order to improve the stability of the self-locking suspension and facilitate processing and operation, the end surface of the locking block 22b close to one end of the locking piece 40 is an arc end surface; when the locking piece 22b sinks into the locking notch of the locking member 40, the circular arc-shaped end surface of the locking piece 22b is tangent to the inner side surface of the upper locking notch. As shown in fig. 7, after the locking block 22b sinks into the locking notch, the left side of the locking block 22b is an arc edge, which is tangent to the inner side surface of the locking notch, when the locking block 22b slides upwards, the locking block 22b can be separated from the locking notch, and when the locking block 22b moves downwards along with the moving seat 21, the locking block 22b interferes with the locking member 40, so as to achieve locking. Of course, during the descending process of the movable seat 21, through the adjustment of the size, the locking block 22b and the locking member 40 only have the arc edge on the left side of the locking block 22b tangent to the side edge of the locking member 40 or not contact with the side edge of the locking member 40 at a certain position or at certain positions (these positions are the positions where the locking block 22b and the locking member 40 are closest to each other), so that the interference generated when the movable seat 21 descends is avoided.

It should be noted that the lifting structure can be applied to move from a low position to a high position, and can also be applied to move from a high position to a low position, for example, to a storage space with a higher position, and the storage space needs to be moved downwards to the sight of an operator. The working principle is similar, and the person skilled in the art can design the device adaptively according to the working principle and still fall into the protection scope of the invention.

The second swing links 22 at the left and right sides of the drawer are connected into a common moving whole through the synchronous rod 26. The lifting structures are stressed together and act on the object to be lifted together.

In a specific embodiment, an external force may be applied to the object to be lifted, and the object to be lifted drives the first swing link 24, the second swing link 22, and the movable base 21 to move. The method specifically comprises the following steps: after the four-bar linkage structure of the first swing link 24, the second swing link 22, the supporting seat 23 and the moving seat 21 is stressed, the first swing link 24 and the second swing link 22 rotate relative to the supporting seat 23 and the moving seat 21 to drive the moving seat 21 to be close to the height of the supporting seat 23 or to be far away from the height of the supporting seat 23, and then the moving seat 21 drives the object to be lifted to move. Meanwhile, the lifting assembly is connected with the locking assembly, when the locking assembly is opened, the movable seat 21 can freely lift up and down, when the locking assembly is locked, the position of the movable seat 21 is locked, so that the movable seat 21 can be prevented from accidentally lifting, the movable seat 21 is convenient to keep stable in position at a certain specific height, and the movable seat 21 drives an object to be lifted to a preset position.

In order to make the striking slider 32a function as a striking self-locking stud 25a, a stopping protrusion 32b is provided on a slide of the slide rail 34 a. The stopping convex block 32b pushes the impact slide block 32a to slide, and the impact slide block 32a props against the self-locking column 25a to slide out of the self-locking groove, so that the aim of opening the self-locking assembly is fulfilled.

Of course, in other embodiments, the striking block 32a is provided with a sliding slot, which is an inclined sliding slot, and when the stopping protrusion 32b slides to the striking block 32a, the stopping protrusion 32b slides into the inclined sliding slot

As shown in fig. 4, the inner side of the striking block 32a is provided with an inclined sliding groove for accommodating the stopping protrusion 32b, and the inclined sliding groove is provided with an upward or downward inflection point at the tail end. The stopping convex block 32b slides into the inclined sliding groove, and strikes the sliding block 32a to slide into the upward inflection point or the downward inflection point of the tail end under the action of strong force, so as to stagger the position of the self-locking column 25 a. The self-locking column 25a is still in the self-locking groove, and the drawer is used as a common drawer.

The drawer can be applied to any equipment needing height adjustment, such as: the goods taking rack can be a box body, a bed body with a drawer and the like.

The invention also provides a refrigerator, wherein the refrigerating chamber of the refrigerator is internally provided with the liftable drawer.

Specific examples of the liftable refrigerator are given below:

the technical scheme is an improvement based on the existing refrigerator (such as a French refrigerator) with a refrigerating chamber arranged at the bottom. The lowermost freezing chamber and the lowermost refrigerating chamber are lifted and stored conveniently.

The refrigerator door body and the drawer are lifted together, horizontal movement is still achieved in the lifting stage, synchronous lifting movement and horizontal movement are achieved, lifting time is shortened, a user holds the handle to continuously move in place once, and compared with the situation that the drawer is pulled out horizontally, the operation steps are reduced because the refrigerator door body and the drawer are lifted in place vertically.

Fig. 13 and 14 are external views, in which 1 is a refrigerator main body, 2 is a lifting assembly, 3 is a drawer, 4 is a door body, 5 is an upper drawer, and 6 is a temperature changing chamber.

The mechanism drawer, the door body, the sliding rails and the like which use the technical scheme move together along the track shown in figure 14 to reach the designed height, namely the drawer is firstly horizontally opened for a certain distance after the handle is held, and then circular motion is carried out along the shaft points of the four connecting rods, and horizontal and vertical motion is synchronously carried out in the process to directly reach a certain height outside, so that the use is convenient.

The specific technical scheme has the working modes as follows: as shown in fig. 1-3, the whole mechanism is a four-bar mechanism, the link components (the first swing link 24, the second swing link 22, the movable base 21) are connected by a rivet 28, and both the first swing link 24 and the second swing link 22 are riveted on the supporting base 23. The slide rails are fixed on the movable base 21, and the second swing rods 22 of the two lifting assemblies are connected by a synchronous rod 26, so that the movement synchronism is ensured. The supporting seats 23 of the two lifting assemblies respectively adopt a first stop 23a and a second stop 23b to limit the movement range of the respective second swing link 22, so as to limit the position of the drawer. The rotation points of the second swing link 22 and the first swing link 24 on the support seat 23 are staggered up and down to prevent the link mechanism (i.e. the mechanism formed by the first swing link, the second swing link, the movable seat and the support seat) from reaching the four-bar superposition position of the mechanism when reaching the first stop 23a, and the stability is reduced.

An automatic locking rod 25 is riveted on the first swing rod 24 and rotates around a rivet 29, and the limiting buckle 24a can limit the automatic locking rod 25 to rotate in a vertical plane without swinging away from the vertical plane. In the state that the drawer is not drawn out, the second end of the self-locking rod 25 is provided with a self-locking column 25a, the self-locking column 25a is in a self-locking groove, self-locking is achieved, free shaking is prevented, the movement of the self-locking column 25a is limited by a lantern ring 24b, and the self-locking column is prevented from moving under impact.

When the handle of the door body 4 is pulled, the drawer is pulled out, when the sliding rail 34a on the storage box drawer 34 and the impact slider 32a on the movable seat 21 impact the self-locking column 25a, the self-locking column 25a is separated from the self-locking groove, the self-locking rod 25 bounces, and rotates around the rivet 29 along the arc-shaped edge on the impact slider 32a, and meanwhile, the displacement is not too large due to impact in the limitation of the lantern ring 24 b. When the self-locking lever 25 rotates to cause the self-locking column 25a to leave the self-locking groove of the movable base 21, the self-locking is released, and the link mechanism can act to perform the lifting process of the drawer. When the self-locking rod 25 is unlocked automatically, the self-locking rod 25 can touch the slide rail stop block 30, and the slide rail stop block 30 rotates 90 degrees, so that the next stage of slide rail can be stopped from being drawn out continuously. The self-locking cylinder 25a slides on the arc surface 21a of the movable seat 21 after unlocking.

When the drawer is retracted and the door is closed, the self-locking rod 25 returns to the initial position, and at the moment, the self-locking column 25a returns to the self-locking groove of the movable base 21, so that the link mechanism is self-locked. At the same time, the return stroke of the self-locking lever 25 will touch the slide rail stop 30 again, causing the slide rail stop 30 to rotate in the reverse direction by 90 ° and return to the initial position.

The air stay bar 27 plays a role in the whole process of ascending and descending, and can play the roles of labor saving and damping.

If the user wishes to use the storage function of the drawer 5, as shown in fig. 4, the stopping protrusion 32b is pushed inward along the slide way of the slide rail 34a, the oblique slide way is formed on the striking slider 32a, so that the striking slider 32a moves upward, and then the striking slider 32a does not strike the self-locking post 25a when the drawer is pulled out, the self-locking cannot be released, and the linkage mechanism remains still. The self-locking lever 25 does not rotate, the slide rail stopper 30 does not rotate, and the slide rail 34a can be continuously withdrawn. The drawer can be horizontally and fully opened and used as a normal freezing storage chamber. At this time, the upper drawer 5 can be normally opened to perform a storage function.

In order to allow the target drawer to be parked at a desired height, a rotatable locking member 40 is provided on the support 23, as shown in fig. 5-12. When the link mechanism swings and rises, the second swing link 22 rotates, as shown in fig. 5 and 6, the upper correcting block 22a cannot touch the locking member 40, the lower locking block 22b can pass through smoothly, when the second swing link 22 is restrained by the first stopper 23a to reach a horizontal position, the correcting block 22a can touch the locking member 40 to rotate by a certain angle, and at the moment, the handle locking block 22b is put down and can be self-locked with the locking member 40. In some embodiments, the front end of the locking block 22b is shaped as an arc tangent to the locking member 40, and can rotate out smoothly upward and interfere with self-locking downward. When the drawer is suspended and stays at the designated height, the user can take or store and arrange the drawer. Of course, in other embodiments, the locking member 40 and the locking block 22b interfere with each other as long as the drawer is locked at the predetermined position, and the locking member 40 and the locking block 22b do not interfere with each other during the drawer descending process. This lack of interference is understood to mean that the edges of both at the closest position are only tangent; or both at the pitch, with no contact occurring.

When the use finishes as fig. 8, the user promotes handle correction block 22c once more and touches locking piece 40, and locking piece 40 is rotatory certain angle, and the lower extreme of putting down mechanism locking piece 22b can touch locking piece 40 rotatory to go down to the lower extreme smoothly, then slide rail horizontal slip, the freezer is closed the door.

When the second swing link 22 moves upwards as shown in fig. 9, the correcting block 22a can touch the locking member 40, and will rotate before the locking block 22b touches the locking member 40, and when the locking block 22b touches the locking member 40 as shown in fig. 10-11, the locking member 40 can continue to rotate, and the arc line of the locking block 22b can smoothly pass through, so as to prevent the drawer from continuing to rise due to self-locking of the two at the lower part, and the position of the locking member 40 is restored to the position shown in fig. 5.

Since the correcting block 22a needs to be located on the extension line of the circular arc line of the locking block 22b, or a little further away, when the correcting block 22a reaches the vicinity of the tip of the root of the locking member 40, interference occurs and the correcting block cannot rise further. The lock member 40 is subjected to the yielding process in the thickness direction. As shown in fig. 12, in an embodiment, the locking member 40 is provided with two locking grooves, each locking groove is surrounded by two teeth, considering that the locking member 40 rotates under the action of the correcting block 22a, the lower teeth and the diagonal teeth of the locking member 40 are subjected to the evacuation treatment, the correcting block 22a can be in contact with the locking member 40 in advance, so as to open the locking member 40 for the locking block 22b, and when the correcting block 22a reaches the vicinity of the root tip of the locking member 40, the correcting block 22a enters the evacuated part of the locking member 40, and the locking member 40 is further pushed to rotate along with the rotation, so that the locking block 22b can smoothly pass through and go upwards.

In the process, the two second swing rods 22 are driven by the synchronous rod 26 to swing and ascend synchronously, and synchronous self-locking of the two sides is guaranteed.

The invention provides an executable scheme for manually ascending a storage space, wherein the storage space is driven by a lifting structure. When the storage space is applied to the refrigerator, the refrigerator door body and the drawer are lifted together for the first time, the actions are continuous, and the operation time is reduced by combining the horizontal pulling-out and lifting processes; moreover, the invention also provides a self-locking scheme for suspending the drawer and the door body in a self-locking manner at a specified height, no additional secondary operation of an auxiliary switch mechanism is needed in the unlocking process, a user only needs to hold the handle all the time to operate, and complicated setting such as setting a self-locking switch on the handle through a foaming layer of the door body is avoided. And moreover, the design of the inclined sliding groove realizes the free conversion of the common drawer and the liftable drawer, when the drawer is not lifted, more articles can be placed in the storage space at the upper part of the freezing chamber, and the effective storage space is utilized to the maximum extent.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a liftable drawer, its box lateral wall sets up the slide rail, but the left and right sides limit of box is furnished with elevation structure, elevation structure includes lifting unit, supporting seat, locking subassembly and locking Assembly, lifting unit includes: the first swing rod, the second swing rod and the movable seat; wherein the content of the first and second substances,

the first end of the first swing rod and the first end of the second swing rod can be rotatably connected to the supporting seat, and the second end of the first swing rod and the second end of the second swing rod can be rotatably connected to the moving seat;

the locking assembly is connected with the lifting assembly, when the locking assembly is opened, the movable seat is in a state of being capable of lifting up and down, and when the locking assembly is locked, the position of the movable seat is locked;

an impact sliding block on the inner side surface of the moving seat slides on the sliding rail, and the impact sliding block is used for opening the locking assembly; the supporting seat of the lifting structure is arranged on the upper part of the side edge of the lifting drawer;

the locking assembly comprises a locking piece, a locking block and more than one correcting block, the locking piece is rotatably arranged on the supporting seat, and the correcting block and the locking block are fixedly arranged on the second swing rod;

the locking piece is positioned on a path through which the correcting block rotates along with the second swing rod, and in the upward rotation of the movable seat, when the locking piece contacts with the correcting block, the locking piece rotates, and in the downward rotation of the movable seat, a position-avoiding and vacancy-avoiding part is arranged at the position where the locking piece contacts with the correcting block;

2. The liftable drawer of claim 1, wherein the locking assembly comprises: the first end of the self-locking rod is rotatably connected with the first oscillating bar; the second end of self-locking lever sets up from the lock post, the tip that removes the seat and connect first pendulum rod sets up from the locked groove, works as when removing the seat and being in lowest, the auto-lock post card is gone into in the locked groove, works as remove the seat and be in when lowest top, the auto-lock post roll-off from the locked groove.

3. The liftable drawer according to claim 2, wherein the movable seat is further provided with a slidable impact slider at the self-locking groove, the impact slider slides between the self-locking posts close to and far away from the self-locking groove, when the self-locking posts are impacted by the impact slider, the self-locking posts slide out of the self-locking groove, and the sliding direction is in the plane of the self-locking groove.

4. The liftable drawer according to claim 3, wherein the movable seat is provided with an arc-shaped edge at the self-locking groove, the arc-shaped edge extends to the notch of the self-locking groove, and when the movable seat moves upwards from the lowest position, the self-locking column rotates close to the arc-shaped edge.

5. The liftable drawer according to claim 4, wherein a limit buckle is arranged on the first swing rod, a gap is formed between the inner side surface of the limit buckle and the first swing rod to accommodate the self-locking rod, and when the movable seat is located at the lowest position, the self-locking rod is located in the gap.

6. The liftable drawer of claim 1, further comprising: the first end of the transmission rod is fixedly connected to the first end of the first swing rod, the transmission rod and the first swing rod form a connecting rod capable of rotating synchronously, and the second end of the transmission rod is rotatably connected with the driving output end of the air supporting rod.

7. The liftable drawer according to claim 1, wherein a stop is arranged on the support base, and the stop is positioned on a rotating path of the second swing link; and/or the presence of a gas in the gas,

and the mounting point of the first end of the first swing rod on the supporting seat and the mounting point of the first end of the second swing rod on the supporting seat are staggered up and down.

8. The liftable drawer according to claim 1, wherein the end surface of the locking block at the end close to the locking member is a circular arc end surface; when the locking block sinks into the locking notch of the locking piece, the arc-shaped end face of the locking block is tangent to the inner side face of the locking notch above the locking block.

9. The liftable drawer according to claim 1, wherein the second swing links at the left and right sides of the liftable drawer are connected into a common moving whole through a synchronizing rod; and/or a stopping lug is arranged on the slide way of the slide rail.

10. The liftable drawer according to claim 9, wherein when the slide rail has a stop protrusion, the inner side of the impact slider has an inclined sliding groove for receiving the stop protrusion, and the inclined sliding groove has an upward or downward inflection point at the end.

11. A refrigerator characterized in that a liftable drawer according to any one of claims 1 to 10 is arranged in a refrigerating chamber.