CN111561803A

CN111561803A - Refrigerator with a door

Info

Publication number: CN111561803A
Application number: CN201910113322.XA
Authority: CN
Inventors: 申乃雨; 陈红欣; 朱建高; 刘铁伟
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2020-08-21
Anticipated expiration: 2039-02-13
Also published as: CN111561803B

Abstract

The invention discloses a refrigerator, which comprises a box body, wherein a storage chamber is arranged in the box body, a first drawer capable of being drawn out of the storage chamber and pushed into the storage chamber is arranged in the storage chamber, the first drawer comprises a drawer outer layer and a drawer inner layer, and the drawer inner layer can be lifted relative to the drawer outer layer through a lifting mechanism under the condition that the drawer is drawn out of the storage chamber; the lifting mechanism comprises at least one gamma-shaped rotating rod unit, the gamma-shaped rotating rod unit comprises two rotating rods, the middle positions of the two rotating rods are hinged together to form a crossed gamma shape capable of rotating relatively within a certain range, and the relative rotation of the two rotating rods drives the inner layer of the drawer to lift relative to the outer layer of the drawer. The drawer of the refrigerator can be lifted and lowered so as to be convenient for taking and placing food materials.

Description

Refrigerator with a door

Technical Field

The present invention relates to a refrigerator.

Background

The refrigerator may include a plurality of storage chambers in which stored goods are received such that food is stored in a frozen state or a refrigerated state, and surfaces of the storage chambers are opened to receive and take out the food. The plurality of storage chambers may include a freezing chamber configured to store food in a frozen state and a refrigerating chamber configured to store food in a refrigerated state.

A refrigeration system may be operated in the refrigerator, in which a refrigerant is circulated. The apparatus constituting the refrigeration system may include: a compressor, a condenser, an expansion device, and an evaporator. The refrigerant may be evaporated while passing through the evaporator, and in the process, air passing near the evaporator may be cooled. Further, the cooled cool air may be supplied to the freezing chamber or the refrigerating chamber. The evaporator may be disposed at a rear side of the storage chamber and may extend vertically.

Generally, two storage rooms at the lowest part of the refrigerator are used as freezing rooms and are provided with drawers, and due to the fact that the two drawers are low in height, the food taking and placing are very inconvenient, particularly meat and fish which are heavy in self and heavy after being frozen are often placed in the freezing rooms, a user has to bend down or crouch down to take and place food, and the user needs to stand up to take food from a cooking bench or a storage rack with a height which is basically equal to the waist before or after the food taking and placing are very inconvenient.

Therefore, the problem that needs to be solved urgently is solved by providing the refrigerator with the drawer capable of conveniently taking and placing food materials.

Disclosure of Invention

The invention aims to provide a refrigerator, wherein a drawer of the refrigerator can be lifted and lowered so as to be convenient for taking and putting food materials.

The refrigerator comprises a box body, a storage chamber is arranged in the box body, a first drawer capable of being drawn out of the storage chamber and pushed into the storage chamber is arranged in the storage chamber, the first drawer comprises a drawer outer layer and a drawer inner layer, and the drawer inner layer can be lifted relative to the drawer outer layer through a lifting mechanism under the condition that the drawer is drawn out of the storage chamber; the lifting mechanism comprises at least one X-shaped rotating rod unit, the X-shaped rotating rod unit comprises two rotating rods, the middle positions of the two rotating rods are hinged together to form an X shape which is crossed and can relatively rotate within a certain range, and the relative rotation of the two rotating rods drives the inner layer of the drawer to lift relative to the outer layer of the drawer.

According to the refrigerator, when the first drawer is pulled out of the storage chamber of the refrigerator, the inner layer of the drawer can be lifted relative to the outer layer of the drawer by using the lifting mechanism, so that food materials can be conveniently taken out of and placed in the drawer; especially, for the drawer at the lowest layer of the refrigerating chamber arranged below, after the drawer is lifted up, a user can take and place food materials without excessively bending down or even squatting down, and the ergonomic design requirement is met. It is particularly important that the lifting mechanism of the refrigerator of the present invention comprises an "x" shaped rotating rod unit, wherein when two rotating rods rotate relatively, the lifting of the inner layer of the drawer relative to the outer layer of the drawer can be realized by a very simple relative rotation.

Drawings

FIG. 1 is a schematic view of the overall structure of a refrigerator according to the present invention;

FIG. 2 is a schematic perspective view of a drawer according to embodiment 1 of the present invention;

FIG. 3 is a schematic perspective view of another perspective view of a drawer according to embodiment 1 of the refrigerator of the present invention;

FIG. 4 is a schematic perspective view of a drawer in a folded state according to embodiment 1 of the refrigerator of the present invention;

FIG. 5 is a front view of a drawer according to embodiment 1 of the refrigerator of the present invention;

FIG. 6 is an enlarged view taken at A of FIG. 5;

FIG. 7 is a schematic view of the refrigerator of embodiment 1 shown in FIG. 4 with the inner layer 5 of the drawer removed;

FIG. 8 is an enlarged view at B of FIG. 7;

FIG. 9 is a schematic view of a first state of a first slider of a drawer of a refrigerator according to an embodiment of the present invention;

FIG. 10 is a schematic view of a second state of a first slider of a drawer of a refrigerator according to an embodiment of the present invention;

FIG. 11 is a schematic view of a third state of the first slider of the drawer of the refrigerator according to the embodiment of the present invention;

FIG. 12 is a front view of embodiment 2 of the refrigerator drawer of the present invention;

FIG. 13 is a front view of a refrigerator drawer embodiment 3 of the present invention;

FIG. 14 is a schematic perspective view of an electric rail for a drawer of a refrigerator according to the present invention;

FIG. 15 is a schematic view of the structure of the electric rail of the drawer of the refrigerator according to the present invention.

Reference numerals:

a box body 1; a drawer 2; a lifting mechanism 3; an outer layer 4 of the drawer; an inner layer 5 of the drawer; a linear motor 6;

a first rotating lever 11; a second rotating bar 12; a third rotating lever 21; a fourth rotating shaft 22;

a first chute 13; a first slider 14; a second runner 15, a second slider 16;

a third chute 23; a third slider 24; a fourth runner 25, a fourth slider 26;

a first hinge support 17, a second hinge support 18; a third hinge support 27; a fourth hinge support 28;

a first telescopic frame 10; a second expansion bracket 20; a hinge shaft link 1020; a push bar 1424;

a metal support plate 30; a stopper 40; a slope 141; a ramp 131.

Detailed Description

Like reference numerals refer to like elements throughout the specification. This specification does not describe all components in the embodiments and will not describe common information in the technical fields to which the disclosure pertains or overlapping information between the embodiments. As used herein, the terms "part," "module," "element," or "block" may be implemented as software or hardware, and depending on the embodiment, a plurality of "parts," "modules," "elements," or "blocks" may be implemented as a single component, or a single "part," "module," "element," or "block" may include a plurality of components.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly or indirectly connected to the other element. When a component is indirectly connected to another component, the component may be connected to the other component through a wireless communication network.

Also, it will be understood that the terms "comprises," "comprising," "includes," "including," and "including," when used in this specification, specify the presence of stated features, but do not preclude the presence or addition of one or more other features.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

The reference numerals used in the operations are provided for convenience of description, and in the case where the order of the operations is not described, the operations may be performed in an order different from the described order unless a specific order is explicitly indicated in the context.

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The present invention relates to a conventional refrigerator having a plurality of storage compartments inside a refrigerator main body constituting an outer contour thereof. The refrigerator main body is formed of a well-known heat insulating box body including a heat insulator, not shown, between an inner box made of, for example, a resin material and an outer box made of, for example, a metal material. The storage room is, for example, a refrigerating room maintained in a refrigerating temperature range, a vegetable room, a freezing room maintained in a freezing temperature range, an ice making room, or the like. The refrigerator includes a well-known refrigeration cycle not shown, and cool air generated by the refrigeration cycle is supplied into each storage chamber by an air blowing action of a fan not shown. In addition, the refrigerator includes a door that opens and closes the storage room. The door includes a rotatable door that opens and closes a front opening of the storage room, a drawer-type door that opens and closes a front opening of the storage room, and the like.

Example 1:

as shown in fig. 1, the refrigerator of the present embodiment includes a cabinet 1, the cabinet 1 is provided with a plurality of storage compartments, wherein the storage compartment at the lowermost layer is provided with a drawer 2; the drawer 2 can be drawn out and pushed in the storage chamber where the drawer is located, so that people can place food materials in the drawer 2 or take the food materials out of the drawer 2, and the exposed portion 3001 of the drawer 2 can realize the joint sealing of the drawer 2 and the storage chamber.

The drawer 2 of the present embodiment mainly includes a drawer outer layer 4, a drawer inner layer 5, and a lifting mechanism 3.

The outer drawer layer 4 can be directly contacted with the storage chamber, or indirectly connected with the storage chamber via a power slide rail 3000 as shown in fig. 1, so that the drawer 2 can be integrally drawn out of and pushed into the storage chamber of the refrigerator. The embodiment of the present invention preferably employs a sliding out and sliding in electric slide rail 3000, the specific structure of which is shown in fig. 14, but may be any available technology in the prior art.

The inner drawer layer 5 is arranged in the outer drawer layer 4 through the lifting mechanism 3, and the inner drawer layer 5 basically has the function that the inner space is used for placing food materials; the external dimension of the main body part of the inner drawer layer 5 is smaller than that of the outer drawer layer 4; the inner drawer layer 5 can be lifted relative to the outer drawer layer 4 by the lifting mechanism 3, and when the lifting mechanism is lowered to the lowest point, most or all of the inner drawer layer 5 is accommodated in the inner space of the outer drawer layer 4.

In practical use, when the drawer 2 is pulled out of the storage room of the refrigerator, the inner layer 5 of the drawer can be lifted up relative to the outer layer 4 of the drawer by using the lifting mechanism 3, so that the food materials can be conveniently taken out of and placed in the drawer 2; especially, for the drawer at the lowest layer of the refrigerating chamber arranged below, after the drawer is lifted up, a user can take and place food materials without excessively bending down or even squatting down, and the ergonomic design requirement is met.

It should be noted that: the outer drawer layer 4 is mainly used for fixing the lifting mechanism 3 and carrying the inner drawer layer 5, and is not directly used for containing food materials, so that the outer drawer layer is not necessarily in a complete common drawer shape, but in a frame shape such as shown in fig. 1, and even the bottom and/or the peripheral wall of the outer drawer layer is provided with a hollow-out structure.

The lifting mechanism 3 of the drawer assembly of the present embodiment is structured as shown in fig. 2. The lifting mechanism 3 includes an "x" shaped rotating rod unit, and in this embodiment specifically includes two first telescopic frames 10 and two second telescopic frames 20 arranged in parallel, the first telescopic frame 10 includes a first "x" shaped rotating rod unit, and the second telescopic frame 20 includes a second "x" shaped rotating rod unit.

The first telescopic frame 10 comprises a first rotating rod 11 and a second rotating rod 12, wherein the middle positions of the first rotating rod 11 and the second rotating rod 12 are hinged together to form a first X-shaped rotating rod unit which is crossed and can rotate mutually in a certain range; the upper end of the first rotating rod 11 is hinged with the lower bottom surface of the inner layer 5 of the drawer, the lower end of the first rotating rod 11 is hinged with a first sliding block 14, and the first sliding block 14 can slide along a first sliding groove 13 on the inner bottom wall of the outer layer 4 of the drawer; the lower end of the second rotating rod 12 is hinged with the inner bottom wall of the outer drawer layer 4, the upper end of the second rotating rod 12 is hinged with a second sliding block 16, and the second sliding block 16 can slide along a second sliding groove 15 on the lower bottom surface of the inner drawer layer 5.

In this embodiment, the inner layer 5 of the drawer is a non-metal member, and the inner space thereof is used for containing food materials, so that the outer bottom wall thereof is supported on the upper surface of the support plate 50; the lower bottom surface of the support plate 50 is fixed with the second sliding chute 15, and the second hinge support 18 is fixedly arranged for realizing the hinge joint with the upper end of the first rotating rod 11. In addition, the inner bottom wall of the outer drawer layer 4 is provided with a first hinge support 17 for realizing the hinge connection of the lower end of the second rotating rod 12 with the outer drawer layer 4.

The second telescopic frame 20 has the same structure as the first telescopic frame 10, and comprises a third rotating rod 21 and a fourth rotating rod 22, wherein the middle parts of the two rotating rods are hinged together to form a second X-shaped rotating rod unit which is crossed and can rotate mutually in a certain range; the upper end of the third rotating rod 21 is hinged with the lower bottom surface of the inner layer 5 of the drawer, the lower end of the third rotating rod 21 is hinged with a third sliding block 24, and the third sliding block 24 can slide along a third sliding groove 23 on the inner bottom wall of the outer layer 4 of the drawer; the lower end of the fourth rotating rod 22 is hinged with the inner bottom wall of the outer drawer layer 4, the upper end of the fourth rotating rod 22 is hinged with a fourth sliding block 26 (not visible in the figure), and the fourth sliding block 26 can slide along a fourth sliding groove 25 at the lower bottom surface of the inner drawer layer 5.

The fourth sliding chute 25 is fixed on the lower bottom surface of the support plate 50, and a fourth hinge support 28 is fixedly arranged on the lower bottom surface of the support plate 50 and is used for realizing hinge connection with the upper end of the third rotating rod 21. In addition, a third hinge support 27 is provided on the inner bottom wall of the drawer outer 4 for enabling the lower end of the fourth rotating rod 22 to be hinged to the drawer outer 4.

Due to the structure, the first telescopic frame 10 and the second telescopic frame 20 jointly form two fixed supporting points and two sliding supporting points on the inner bottom surface of the outer drawer layer 4, and also form two fixed supporting points and two sliding supporting points on the outer bottom surface of the inner drawer layer 5, so that the first telescopic frame 10 and the second telescopic frame 20 can stably support the inner drawer layer.

The synchronous movement of the first and second

telescopic frames

10 and 20 can realize the lifting or falling of the inner drawer layer 5 relative to the outer drawer layer 4. The specific principle is as follows: under the action of external force, the first sliding block 14, the second sliding block 16, the third sliding block 24 and the fourth sliding block 26 respectively slide along the respective sliding grooves synchronously, and the first rotating rod 11, the second rotating rod 12, the third rotating rod 21 and the fourth rotating rod 22 rotate simultaneously, so that the heights and the widths of the first telescopic frame and the second telescopic frame are changed oppositely, and the drawer inner layer 5 is driven to ascend or descend upwards relative to the drawer outer layer 4.

In order to make the first telescopic frame and the second telescopic frame move and stretch synchronously, a hinged point of the first rotating rod 11 and the second rotating rod 12 and a hinged point of the third rotating rod 21 and the fourth rotating rod 22 are connected by a hinged shaft connecting rod 1020; in addition, for uniform driving, a push rod 1424 connecting the first slider 14 and the third slider 24 is disposed between the two sliders, and specifically, one end of the push rod 1424 is connected to the first slider 14, and the other end of the push rod 1424 is connected to the third slider 24.

The lifting mechanism 3 of this embodiment further includes a driving device 6, the driving device 6 is specifically a linear motor, and an output shaft of the linear motor is connected to the push rod 1424, and is used for pushing or pulling the push rod 1424 to move in the horizontal direction.

It should be noted that, the connection of the push rod and the output shaft of the linear motor, the present embodiment provides the following three alternatives: the push rod 1424 is hinged with the first slider 14 and the third slider 24, the push rod 1424 can freely rotate relative to the first slider 14 and the third slider 24, and the output shaft of the linear motor 6 is directly and fixedly connected with the push rod 1424; the push rod 1424 is fixedly connected with the first slider 14 and the third slider 24, and the output shaft of the linear motor 6 is hinged with the push rod 1424; the push rod 1424 is hinged with the first slider 14 and the third slider 24, and the output shaft of the linear motor 6 is also hinged with the push rod 1424. The telescopic frame structure can ensure that the linear motor 6 does not need to move along with other parts, and only needs the output shaft to be connected with the driving push rod, thereby being beneficial to the wiring connection of the linear motor and a power supply device through a power line and the wiring connection of the linear motor and a circuit board through a data line.

The following describes how the elevator mechanism of the present embodiment moves.

The movement of the first and second

telescopic frames

10 and 20 is as follows. When the linear motor 6 pushes the push rod 1424 to move to the left direction as shown in fig. 2, the first slide block 14 and the second slide block 16 can be directly driven to slide in the first slide slot and the second slide slot 13 and 15 respectively; because the first rotating rod 11 is hinged with the second rotating rod 12, the lower end of the second rotating rod 12 is hinged with the inner bottom wall of the outer drawer layer 4, and because the third rotating rod 21 is hinged with the fourth rotating rod 22, and the lower end of the fourth rotating rod 2 is hinged with the inner bottom wall of the outer drawer layer 4, the lower half parts of the first telescopic frame 10 formed by the first rotating rod 11 and the second rotating rod 12 and the second telescopic frame 20 formed by the third rotating rod 21 and the fourth rotating rod 22 are both subjected to a force of extruding towards the middle; meanwhile, the upper end of the second rotating rod 12 is hinged with the second slider 16, and the upper end of the fourth rotating rod 22 is hinged with the fourth slider 26, so that the upper end of the second rotating rod 12 slides to the left in the second sliding slot 15, and the upper end of the fourth rotating rod 22 slides to the left in the fourth sliding slot 25; because the upper ends of the second rotating rod 12 and the fourth rotating rod 22 are hinged with the outer bottom surface of the inner layer 5 of the drawer, the first rotating rod 11 and the second rotating rod 12 rotate relatively synchronously, and the third rotating rod 21 and the fourth rotating rod 22 rotate relatively synchronously; the movement of all the parts shows that the first expansion bracket 10 and the second expansion bracket 20 are synchronously closed to the vertical direction, the width is narrowed and the height is increased, so that the inner layer 5 of the drawer is pushed to ascend; when the linear motor 6 pushes the push rod 1424 to move to the right direction as shown in the figure, the movement of the above components is reversed, and the effect of the movement of the components is that the first expansion bracket 10 and the second expansion bracket 20 are synchronously closed to the horizontal direction, the width is widened, and the height is reduced, so as to push the inner layer 5 of the drawer to descend; due to the action of the push bar 1424, the first telescopic frame 10 and the second telescopic frame 20 move synchronously, so that the inner layer 5 of the drawer can be in a stable state all the time in the process of rising or falling.

The inner layer 5 of the drawer is lifted to have a limit position, and correspondingly, the first telescopic frame 10 and the second telescopic frame 20 also have a limit position when being folded in the vertical direction, the limit position is just the minimum distance between the hinge point of the lower end of the first rotating rod 11 and the inner bottom wall of the outer layer 4 of the drawer and the first sliding block 14, certainly, the minimum distance between the hinge point of the third rotating rod 21 and the inner bottom wall of the outer layer 4 of the drawer and the third sliding block 24, and we can say that the first telescopic frame 10 and the second telescopic frame 20 are in the unfolding state at this time.

The lower of the inner layer 5 of the drawer also has a limit position, and correspondingly, the first telescopic frame 10 and the second telescopic frame 20 also have a limit position when being folded towards the horizontal direction, and the limit position is that the first rotating rod 11 and the second rotating rod 12 are rotated to the horizontal position or the basic horizontal position, and certainly, the third rotating rod 21 and the fourth rotating rod 22 are also rotated to the horizontal position or the basic horizontal position, and we can refer to that the first telescopic frame 10 and the second telescopic frame 20 are in the folded state at this time.

In practice, the size of the telescopic frame can be designed according to the requirement, including the size of each rotating rod, the position point hinged with the inner layer and the outer layer of the drawer, and the like.

Compared with the prior art, the refrigerator of the embodiment has good beneficial effects. Because the telescopic frame with the X-shaped rotating rod unit is used as the lifting mechanism, the lifting mechanism has simple structure, smooth driving, smooth lifting and reliable operation; because the first rotating rod expansion bracket and the second rotating rod expansion bracket which are arranged in parallel are adopted, four connecting supporting points are respectively arranged on the inner layer of the drawer and the outer layer of the drawer, the inner layer of the drawer is stably supported, and only four rotating rods which synchronously rotate are taken as moving parts, so that the movement is smooth, and when the drawer is folded, each rotating rod is basically in a horizontal state, so that the occupied space is small, and when the drawer is unfolded, the drawer can be unfolded lightly and flexibly to support the inner layer of the drawer to be lifted to a sufficient height, and the stroke of a driving device does not need to be large; because the X-shaped rotating rod telescopic frame is adopted, the driving of the X-shaped rotating rod telescopic frame can be at the lower part of the X-shaped rotating rod telescopic frame, namely the whole driving device is attached to the inner bottom wall of the outer layer of the drawer, so that the inner space of the outer layer of the drawer can be saved; due to the arrangement of the push rod and the hinge shaft connecting rod, the movement of the first telescopic frame and the movement of the second telescopic frame can be accurately synchronized, and the lifting of the inner layer of the drawer is very stable.

In practical design, instead of providing the third sliding slot 23 and the fourth sliding slot 25 directly on the bottom surface of the inner drawer layer 5 and directly hinging with the first rotating rod 11 and the third rotating rod 21, a metal supporting plate 30 is provided, the inner drawer layer 5 is supported on the metal supporting plate 30, the third sliding slot 23 and the fourth sliding slot 25 are provided on the bottom surface of the metal supporting plate 30, the second hinge support 18 is provided for hinging with the upper end of the first rotating rod 11, and the fourth hinge support 28 is provided for hinging with the upper end of the third rotating rod 21. Meanwhile, a first hinged support 17 is also arranged on the inner bottom wall of the outer layer 4 of the drawer and is used for being hinged with the lower end of the second rotating rod 12, and a second hinged support 18 is arranged and is used for being hinged with the lower end of the third rotating rod 22.

For a drawer with a smaller size, only the first x-shaped telescopic frame may be provided, and the hinge connecting rod 1020 and the push rod 1424 are not provided as compared with the above-described embodiment, and the linear motor 6 directly drives the first slider 14 to move. Of course, the structure is relatively unstable, so that the invention is preferably provided with two groups of expansion brackets, namely the first expansion bracket and the second expansion bracket.

Example 2:

this embodiment provides a refrigerator, it has increased a set of self-lock device on above-mentioned embodiment, self-lock device includes: the first self-locking mechanism is formed by an inclined plane arranged on the first sliding block and an inclined plane arranged on the first sliding groove, and/or the second self-locking mechanism is formed by an inclined plane arranged on the third sliding block and an inclined plane arranged on the third sliding groove.

The first self-locking mechanism is illustrated as an example and the specific structure is as follows.

In the present embodiment, as shown in fig. 7, 8 and 9, the first sliding block 14 is sleeved in the first sliding chute 13 and can slide along the length direction thereof, and the first sliding chute 13 can limit the movement of the first sliding block 14 in the vertical direction; the first end of the first sliding block 14 is hinged with the lower end of the first rotating rod 11, and the second end of the first sliding block 14 is hinged or fixedly connected with the push rod 1424; the end of the inner bottom surface of the first sliding chute 13 close to the central position of the first X-shaped expansion bracket 10 is recessed downwards to form a slope 131 with an obtuse included angle with the bottom surface of the sliding chute; a corresponding inclined plane 141 is arranged at the bottom surface of the first slide 14 close to the hinge point with the first rotating rod 11.

When the first sliding block 14 slides at the position which does not reach the dent of the first sliding chute 13, the bottommost end of the inclined plane 141 at the bottom surface of the first sliding block 14 and the bottom surface of the first sliding block 14, which is close to the hinge point position corresponding to the push rod 1424, are pressed on the bottom surface of the first sliding chute 13 to slide; when the first sliding block 14 slides towards the concave direction and reaches the concave position, the position is called a first position, as shown in fig. 7, due to the existence of the slope 131 on the bottom surface of the first sliding chute 13 and the existence of the slope 141 on the bottom surface of the first sliding block 14, and the pressure of the first rotating rod 11 on the first sliding block 14 through the hinge joint, the lowest point of the slope 141 on the bottom surface of the first sliding block 14 starts to slide downwards along the slope 131 of the first sliding chute 13, and the position is called a second position, and the state is shown in fig. 8; until the inclined surface 141 of the bottom surface of the first sliding block 14 and the slope 131 of the bottom surface of the first sliding chute 13 form the maximum surface contact, so that the first sliding block 14 is temporarily clamped at the position, which is called as a third position, as shown in the state of fig. 9, so that the self-locking of the first telescopic frame is formed, at the moment, the first telescopic frame 10 is in the unfolding state, and the drawer inner layer 5 is lifted to the highest position; during the relative sliding between the inclined surface 141 and the ramp 131, the second slider 16 is actually turned by a small angle in the counterclockwise direction as shown in fig. 7, 8 and 9.

In practical design, it is preferable that the slope 131 and the slope 141 form the maximum surface contact, and the first rotating rod 11 is perpendicular to the slope 131 and the slope 141, so that the self-locking effect is optimized, i.e. the first rotating rod 11 can be better supported by the slope.

When the first sliding block 14 is pushed by the linear motor 6 through the push rod 1424 to reach the position where the first telescopic frame 10 is self-locked, the linear motor 6 can temporarily stop driving; the position of the self-locking, i.e. the extreme position reached by the rotation of the first rotary lever 11 in the vertical direction, i.e. the extreme position of the first telescopic frame 10 with reduced width, i.e. the extreme position of the drawer inner 5 with raised height.

When the drawer inner 5 is required to descend, the linear motor 6 drives the first sliding block 14 to slide reversely through the push rod 1424, and because the included angle between the slope 131 at the bottom of the first sliding chute 13 and the horizontal plane of the first sliding chute 13 is an obtuse angle, the lowest point of the inclined plane 141 at the bottom of the first sliding block 14 can be driven to slide upwards along the slope 131 of the first sliding chute 13 until the slope completely climbs up, and then the first sliding block 14 can continue to slide in a direction away from the slope 131 (i.e. in a rightward direction shown in fig. 7) under the driving of the linear motor 6 until another limit position is reached, which is the limit position reached by the rotation of the first rotating rod 11 in the horizontal direction, and in which the first telescopic frame 10 is in a folded state, the drawer inner 5 is also lowered to the lowest limit position; during the relative sliding of the inclined surface 141 and the slope 131, the first slider 14 is actually turned by a small angle in the clockwise direction as shown in fig. 8.

Due to the nature of the x-shaped boom extension, the movement of the second slider 16 in the second runner 15, respectively, is substantially synchronized with the movement of the first slider 14 in the first runner 13 during the above process.

The self-locking device of this embodiment may only include the first self-locking mechanism, or may only include one second self-locking mechanism disposed on the second expansion bracket, that is, an inclined surface is disposed on the third sliding block and a slope is disposed on the third sliding groove. Of course, the present embodiment may also have both the first self-locking mechanism and the second self-locking mechanism, in this case, the third sliding chute 23 and the first sliding chute 13 have substantially the same structure, and the third sliding block 24 and the first sliding block 14 have substantially the same structure and move substantially synchronously; in a word, the telescoping, self-locking and the like of the two telescopic frames are basically synchronous. When the second self-locking mechanism is included, the inclined surface and the slope of the second self-locking mechanism are basically vertical to the third rotating rod when in maximum surface contact.

According to the refrigerator provided by the embodiment, the sliding block directly driving the rotating rod to slide and the corresponding sliding groove on the telescopic frame of the lifting mechanism are provided with the self-locking mechanism, and the self-locking mechanism is formed by mutually matching inclined surfaces respectively arranged on the sliding groove and the sliding block, so that a better self-locking effect can be realized; because the inclined plane is arranged to be completely vertical or vertical to the greatest extent with the rotating rod connected with the corresponding sliding block in the self-locking state, the whole telescopic frame is supported at a reasonable angle through the rotating rod, and the stability of the telescopic frame in the unfolding state is guaranteed.

Example 3:

compared with embodiment 1, the first telescopic frame 10 and the second telescopic frame 20 of the present embodiment are respectively formed by stacking two substantially identical x-shaped rotating rod units one on top of the other, as shown in the figure, two lower end points of the upper x-shaped rotating rod unit are respectively hinged with two upper end points of the lower x-shaped rotating rod unit, the connection of the two upper end points of the upper x-shaped rotating rod unit with the inner layer of the drawer is the same as that of embodiment 1, and the connection of the two lower end points of the lower x-shaped rotating rod unit with the inner bottom wall of the outer layer of the drawer is the same as that of embodiment 1.

During practical use, when the lower X-shaped rotating rod unit is stressed and closed, the X-shaped rotating rod unit superposed on the lower X-shaped rotating rod unit can be driven to be synchronously closed, all guide rods on the first telescopic frame and the second telescopic frame synchronously rotate, and the inner layer of the drawer can ascend or descend relative to the outer layer of the drawer.

Compared with embodiment 1, the telescopic frame structure of the embodiment has the advantages that the two X-shaped rotating rod units are overlapped up and down, so that the lifting range of the inner layer of the drawer can be larger under the condition that the length of the rotating rod is the same. Or, compared with embodiment 1, the telescopic frame structure of this embodiment is that two x-shaped rotating rod units are stacked up and down, so that when the inner layer of the drawer rises to the same height, the length of each rotating rod can be shorter, the running stroke of the linear motor is smaller, and the arrangement of the driving device is facilitated. Of course, the self-locking mechanism of embodiment 2 can also be adopted in the present embodiment.

Example 4:

on the basis of embodiment 3, the first telescopic frame and the second telescopic frame are respectively stacked between two "x" rotating rod units stacked up and down, and one or more "x" rotating rod units are stacked, so that the advantages are the same as those of embodiment 3, and further description is omitted. Of course, the self-locking mechanism of embodiment 2 can also be adopted in the present embodiment.

Example 5:

the refrigerator of the embodiment adopts a self-locking mechanism different from that of the embodiment 2 in the

embodiments

1, 3 or 4. Taking the first self-locking mechanism as an example, the principle is that a clamping hole is arranged on the first sliding chute 13, a corresponding spring clamping bead is arranged on the first sliding block 14, and when the first sliding block 14 is driven by the linear motor 6 to the left end limit position as shown in fig. 2, the clamping bead is clamped in the clamping hole under the action of the spring, so that self-locking is realized.

In actual design, in order to ensure the stability of self-locking, two spring clamping beads are symmetrically arranged on two side surfaces of the first sliding block 14, and two clamping holes of the first sliding groove 13 are correspondingly arranged.

The mounting of the spring beads on the first slider 14 is prior art and will not be described in detail.

When the self-locking needs to be unlocked, the first sliding block 14 starts to move rightwards under the driving of the linear motor 6, and the clamping ball is spherical, so that the first sliding block can easily slide out of the clamping hole and continues to move rightwards along with the first sliding block 14.

In the same way, the self-locking device of this embodiment may also include only the first self-locking mechanism, or may include only one second self-locking mechanism disposed on the second expansion bracket, that is, the third slider is provided with a spring clip bead and the third sliding groove is correspondingly provided with a clip hole. Of course, the present embodiment may also have both the first self-locking mechanism and the second self-locking mechanism, in this case, the third sliding chute 23 and the first sliding chute 13 have substantially the same structure, and the third sliding block 24 and the first sliding block 14 have substantially the same structure and move substantially synchronously; in a word, the telescoping, self-locking and the like of the two telescopic frames are basically synchronous.

It should be noted that the self-locking mechanism of embodiment 4 can better support the telescopic frame in the self-locking state due to the function of the inclined surface 141, and the effect is better than that of embodiment 5. However, the spring clamping bead of the embodiment is a standard component, can be directly selected, does not need special processing like the inclined plane structure of the embodiment 5, and is good when the inner layer of the drawer and the design of the inner layer of the drawer are lighter in weight by adopting the self-locking mechanism of the embodiment.

The linear motor 6 is only a specific driving device adopted by the embodiment of the invention, and has the advantages of simple structure; in practice, any driving device in the prior art can be adopted to drive the sliding block to slide in the forward direction and the reverse direction according to requirements; for example, a slow-opening electromagnetic valve and a stepping motor can be adopted to drive a crank slider mechanism or a gear rack mechanism, and the like, as long as the push rod and the slider connected with the push rod can be pushed and pulled to slide in the sliding groove, and the description is omitted.

In order to make the movement of the refrigerator drawer more automatic, the drawer can be completely controlled electrically to draw out and push in the storage chamber. For example, as shown in fig. 14, an electric slide rail device 3000 includes a driving slide rail assembly 100A and a driven slide rail assembly 100B, two sets of

slide rail assemblies

100A and 100B are symmetrically installed at two sides of a drawer of a refrigerator, the two sets of

slide rail assemblies

100A and 100B are respectively connected with a side wall of an inner container of the refrigerator, a slide rail driving assembly is installed on the driving slide rail assembly 100A, and the driving slide rail assembly 100A drives the driven slide rail assembly 100B to move synchronously through a synchronizing assembly 300.

The driving slide rail assembly 100A and the driven slide rail assembly 100B have the same structure, and the structure of the slide rail assembly is specifically described by taking the driving slide rail assembly as an example, see fig. 15, and include a fixed guide rail 110, a connecting guide rail 120, and a sliding guide rail 130, where the fixed guide rail 110 is installed on the inner side wall of the inner container of the refrigerator through a U-shaped fixed guide rail bracket 150, the sliding guide rail 130 is connected with the drawer of the refrigerator through a sliding guide rail bracket 160, and the sliding guide rail 130 is slidably connected with the fixed guide rail 110 through the connecting guide rail 120. Referring to fig. 15, the slide rail driving assembly includes a driving gear 220, a driving rack 230, a touch pad with a built-in touch chip, a deceleration motor 240 and a controller, the deceleration motor 240 is installed at the outer side of the front end of the fixed guide rail 110 of the driving slide rail assembly 100A, the driving gear 220 is installed on the output rotating shaft of the deceleration motor 240, the driving rack 230 is installed on the sliding guide rail bracket 160 of the driving slide rail assembly 100A, the driving gear 220 is engaged and installed on the driving rack 230, the touch pad with the built-in touch chip can be installed on the front door panel of the refrigerator, the deceleration motor 240 is electrically connected with the controller, the touch pad with the built-in touch chip is electrically connected with the controller, the controller controls the deceleration motor 240 to drive the driving gear 220 to drive the sliding guide rail bracket 160 and the sliding guide rail 130 to move horizontally along, thereby realizing the electric control opening or closing of the refrigerator drawer.

Adopt above-mentioned electric slide rail, just can set up the touch pad on the door body front panel of refrigerator upper portion through the operation, make the automatic roll-off of drawer 2 earlier, make drawer inlayer 5 rise on the touch pad of operating again, get to put and eat the material after, operate the touch pad once more and make drawer inlayer 5 descend, make drawer 2 automatic roll-in refrigerator cavity through operating the touch pad at last, whole process need not excessively stoop or squat down, use convenience more.

Claims

1. A refrigerator is characterized in that the refrigerator comprises a box body, a storage chamber is arranged in the box body, a first drawer capable of being drawn out of the storage chamber and pushed into the storage chamber is arranged in the storage chamber, the first drawer comprises a drawer outer layer and a drawer inner layer, and the drawer inner layer can be lifted relative to the drawer outer layer through a lifting mechanism under the condition that the drawer is drawn out of the storage chamber; the lifting mechanism comprises at least one X-shaped rotating rod unit, the X-shaped rotating rod unit comprises two rotating rods, the middle positions of the two rotating rods are hinged together to form an X shape which is crossed and can relatively rotate within a certain range, and the relative rotation of the two rotating rods drives the inner layer of the drawer to lift relative to the outer layer of the drawer.

2. The refrigerator as claimed in claim 1, wherein the elevating mechanism includes a first telescopic frame including one of the x-shaped rotary bar units; the 'X' -shaped rotating rod unit is a first 'X' -shaped rotating rod unit, and two rotating rods of the first 'X' -shaped rotating rod unit are respectively a first rotating rod and a second rotating rod; the upper end of the first rotating rod is hinged to the lower bottom surface of the inner layer of the drawer, the lower end of the first rotating rod is hinged to the first sliding block, the first sliding block can slide along the first sliding groove in the inner bottom wall of the outer layer of the drawer, the lower end of the second rotating rod is hinged to the inner bottom wall of the outer layer of the drawer, the upper end of the second rotating rod is hinged to the second sliding block, and the second sliding block can slide along the second sliding groove in the lower bottom surface of the inner layer of the drawer.

3. The refrigerator of claim 2 wherein said inner drawer layer is a non-metallic member having an outer bottom wall supported on said support plate upper surface; the lower bottom surface of the supporting plate is fixed with the second sliding groove, the lower bottom surface of the supporting plate is fixed with a second hinged support which is used for being hinged with the upper end of the first rotating rod, and the inner bottom wall of the outer layer of the drawer is provided with a first hinged support which is used for realizing the hinging of the lower end of the second rotating rod with the outer layer of the drawer.

4. The refrigerator as claimed in claim 3, wherein the elevating mechanism further comprises a second expansion bracket juxtaposed to the first expansion bracket, the second expansion bracket having the same structure as the first expansion bracket and moving synchronously therewith.

5. The refrigerator as claimed in claim 4, wherein the elevating mechanism further comprises a hinge connecting rod for connecting a hinge point at which the middle portions of the two rotation bars are hinged to each other in the first telescopic mechanism with a hinge point at which the middle portions of the two rotation bars are hinged to each other in the second telescopic mechanism.

6. The refrigerator as claimed in claim 5, wherein the lifting mechanism further comprises a driving mechanism, the driving mechanism drives the lifting mechanism by a push rod, one end of the push rod is connected to the first slider, and the other end of the push rod is connected to a third slider corresponding to the first slider on the second telescopic mechanism.

7. The refrigerator as claimed in claim 6, wherein the driving mechanism is a linear motor, and an output shaft thereof is connected to the push rod for pushing or pulling the push rod to move in a horizontal direction to realize the movement of the elevating mechanism.

8. The refrigerator as claimed in claim 7, wherein the push rod is hinged to the first slider and the third slider, and an output shaft of the linear motor is fixedly connected to the push rod.

9. The refrigerator as claimed in claim 7, wherein the push rod is fixedly connected to the first slider and the third slider, and an output shaft of the linear motor is hinged to the push rod.

10. The refrigerator as claimed in claim 7, wherein the push rod is hinged to the first slider and the third slider, and an output shaft of the linear motor is hinged to the push rod.

11. The refrigerator according to any one of claims 5 to 10, wherein the refrigerator further comprises a self-locking device, the self-locking device comprising: the first self-locking mechanism is formed by an inclined plane arranged on the first sliding block and an inclined plane arranged on the first sliding groove, and/or the second self-locking mechanism is formed by an inclined plane arranged on the third sliding block and an inclined plane arranged on the third sliding groove.

12. The refrigerator according to claim 11, wherein when the self-locking device comprises a first self-locking mechanism, the first rotating rod is substantially perpendicular to the inclined surface and the slope when the inclined surface and the slope of the first self-locking mechanism are in maximum surface contact; when the self-locking device comprises a second self-locking mechanism, the inclined surface of the second self-locking mechanism is in surface contact with the inclined surface to the maximum extent, and the third rotating rod is basically perpendicular to the inclined surface and the inclined surface.

13. The refrigerator of any one of claims 510 further comprising a self-locking device, the self-locking device comprising: the first sliding block is provided with a first sliding groove, the second sliding groove is provided with a second sliding groove, the first sliding groove is provided with a first sliding block, the second sliding block is provided with a second sliding block, the first sliding block is provided with a second sliding block.

14. The refrigerator according to claim 1, wherein the elevating mechanism comprises a first telescopic frame, the first telescopic frame comprises at least two x-shaped rotary rod units which are overlapped up and down, each x-shaped rotary rod unit comprises two rotary rods which are hinged together at the middle position, and two lower end points of the upper x-shaped rotary rod unit are hinged with two upper end points of the lower x-shaped rotary rod unit respectively; the upper end of one rotating rod of the uppermost X-shaped rotating rod unit is hinged with the lower bottom surface of the inner layer of the drawer, the upper end of the other rotating rod is hinged with a first sliding block, and the first sliding block can slide along a third sliding groove on the lower bottom surface of the inner layer of the drawer; one rotating rod of the lowest X-shaped rotating rod unit is hinged with the inner bottom wall of the outer layer of the drawer, the lower end of the other rotating rod is hinged with a first sliding block, and the first sliding block can slide along a first sliding groove in the inner bottom wall of the outer layer of the drawer; the first slide groove and the third slide groove are both on the left side or the right side of the X-shaped rotating rod unit.

15. The refrigerator as claimed in claim 1, wherein the inner layer of the drawer has a basic function of placing food material in an inner space thereof; the external dimension of the main body part of the inner drawer layer is smaller than that of the outer drawer layer; most or all of the inner drawer layer is received within the interior space of the outer drawer layer when the inner drawer layer bottoms out.