CN111664649A

CN111664649A - Automatic lifting device for refrigerator shelf

Info

Publication number: CN111664649A
Application number: CN202010559319.3A
Authority: CN
Inventors: 李乾坤; 鲍敏; 陆涛
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-09-15

Abstract

The invention discloses an automatic lifting device for a refrigerator shelf, and relates to the technical field of refrigerators. The invention comprises a box body, a shelf, a lifting device and a baffle plate; the lifting device comprises a fixed seat; a driving motor is fixedly arranged on the fixed seat; the output end of the driving motor is connected with a lead screw; the peripheral side surface of the screw rod is matched with a lifting seat; the lower end of the fixed seat is horizontally provided with a chute A; the surface of the baffle is provided with a pair of guide grooves; the inner wall of the guide groove is matched with the lifting device; one side of the lifting seat is hinged with a pair of connecting rods; the upper ends of the pair of connecting rods are hinged with a lifting frame; the lower ends of the connecting rods are hinged with a sliding block A. The invention realizes the lifting of the shelves by arranging a single driving motor, avoids the problem of unsynchronized operation of the shelves caused by the operation of a plurality of driving devices, and avoids the problems of unstable motion and short service life because the weight is concentrated on the transmission seat.

Description

Automatic lifting device for refrigerator shelf

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to an automatic lifting device for a refrigerator shelf.

Background

Most refrigerator shelves are single rectangle sheet glass shelf or dull and stereotyped plastic shelf now, and the glass shelf is put on the case courage rib or the card is fixed above the case courage rib through itself and case courage complex structure, and prior art refrigerator shelf is mostly put on the rib of both sides about the inner bag, and the rib sets up a plurality of not co-altitude, adjusts the shelf position according to the demand. But the height adjustment needs to take out all the articles on the shelf, put the shelf at a proper position and put the articles on the shelf, and for a high and deep large-volume refrigerator, the storage and the taking out of the foods on the shelf are inconvenient. And only a few fixed heights can be adjusted, and the effect of stepless adjustment of the shelf cannot be effectively realized. Meanwhile, the operation time is long, the amount of cold air is increased, the energy consumption loss is large, and the like.

At present, a small number of brands of refrigerators in the market release refrigerators with liftable shelves, and the storage requirements of customers on foods and other articles with different heights are met. For example, in patent No. 201510149798.0, patent name is shelf subassembly and refrigerator, through set up the draw-in groove on the lateral wall of refrigerator, set up a plurality of rotary knob in the interval in the draw-in groove in order to support the shelf, the existence of this kind of design can't adjust arbitrary height as required, the height of adjusting can only be the interval between two rotary knob. Such as: the patent application with patent publication number CN106595211A discloses a lifting synchronization system of a refrigerator rack and a control method thereof, when the assembly of a rack body and a lifting mechanism is completed, a connecting piece is slidingly sleeved on a guide rod, a sliding nut is sleeved on a transmission screw rod, and a motor drives the transmission screw rod to rotate to drive the lifting of the sliding nut so as to drive the rack body to move along the guide rod; the weight of the shelf and the articles on the shelf are concentrated on the nut, so that the nut has larger bearing force, unstable movement and limited service life; in addition, most of the existing refrigerator lifting shelves adopt a left lifting structure and a right lifting structure to realize the lifting of the shelves, but under the existing process conditions, the left lifting mechanism and the right lifting mechanism are difficult to realize the synchronization problem.

The invention realizes the lifting of the shelf by arranging a single driving motor, is convenient for continuously adjusting the height of the shelf, avoids the problem of asynchronous operation of the shelf caused by the operation of a plurality of driving devices, and avoids the problems of larger bearing force of the transmission seat, unstable motion and short service life caused by the concentration of weight on the transmission seat.

Disclosure of Invention

The invention aims to provide an automatic lifting device for refrigerator shelves, which realizes shelf lifting by arranging a single driving motor and solves the problems that the conventional refrigerator lifting shelves are difficult to continuously adjust the height, generally lift by arranging a left lifting mechanism and a right lifting mechanism and are difficult to realize synchronization.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an automatic lifting device for a refrigerator shelf, which comprises a box body, a shelf, a lifting device and a baffle plate, wherein the shelf is arranged on the box body;

the lifting device comprises a fixed seat; a driving motor is fixedly arranged on the fixed seat; the output end of the driving motor is connected with a lead screw; the peripheral side surface of the screw rod is matched with a lifting seat; the lower end of the fixed seat is horizontally provided with a chute A; the surface of the baffle is provided with a pair of guide grooves; the inner wall of the guide groove is matched with the lifting device.

Furthermore, one side of the lifting seat is hinged with a pair of connecting rods; the upper ends of the pair of connecting rods are hinged with a lifting frame; the lower ends of the connecting rods are hinged with a sliding block A.

Further, the lower end of the lifting frame is provided with a sliding chute B; the sliding groove B is parallel to the sliding groove A; and a pair of sliding blocks B are connected in the sliding groove B in a sliding manner.

Further, a pair of the connecting rods all include a connecting rod lower end and a connecting rod upper end.

Furthermore, one side of each of the pair of sliding blocks A is provided with a hinge point A; one side of each of the pair of sliding blocks B is provided with a hinge point B; the hinge point A is hinged with the lower end of the connecting rod; and the hinge point B is hinged with the upper end of the connecting rod.

Further, a pair of lifting sliding grooves is formed in the surface of the fixing seat.

Furthermore, the lifting frame is of a U-shaped frame structure; clamping blocks are arranged at the two ends of the lifting frame; the fixture block is connected with the inner wall of the lifting chute in a sliding manner.

Furthermore, the screw rod penetrates through the lifting frame, and a limiting block is matched with the end part of the screw rod; the limiting block is fixedly installed with the fixing seat.

The invention has the following beneficial effects:

1. according to the invention, the lifting of the shelf is realized by arranging the single driving motor, the height of the shelf is convenient to continuously adjust, and the problem of unsynchronized shelf operation caused by the operation of a plurality of driving devices is avoided.

2. According to the invention, the single driving motor is arranged, the output end of the driving motor is connected with the lead screw, and the lifting seat is matched with the peripheral side surface of the lead screw, so that the problems of large bearing force of the transmission seat, unstable movement and short service life caused by the fact that the weight is concentrated on the transmission seat are avoided.

3. The invention has simple structure, stable movement, long service life and low cost, and is convenient for users to reach the articles on the refrigerator shelf, the articles on the shelf can be conveniently taken and placed, and the space utilization rate of the refrigerator is optimized.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an automatic lifting device for refrigerator shelves according to the present invention;

FIG. 2 is a schematic view of the present invention with the baffle removed;

FIG. 3 is a schematic view of the crane in the lowest position;

FIG. 4 is a schematic structural view of the crane at the highest position;

in the drawings, the components represented by the respective reference numerals are listed below:

1-box body, 2-shelf, 3-lifting device, 4-baffle, 5-limiting block, 31-fixing seat, 32-driving motor, 33-lead screw, 34-slide block A, 35-connecting rod, 36-lifting seat, 37-lifting frame, 41-slide block A, 311-lifting slide groove, 312-slide block A, 341-hinge point A, 352-connecting rod lower end, 353-connecting rod upper end, 371-slide block B, 372-slide block B, 373-hinge point B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention relates to an automatic lifting device for refrigerator shelves, comprising a box body 1, a shelf 2, a lifting device 3 and a baffle 4;

the lifting device 3 comprises a fixed seat 31, and the lifting device 3 is arranged at the rear end or the side end of the box body 1; a driving motor 32 is fixedly arranged on the fixed seat 31; the output end of the driving motor 32 is connected with a screw 33; the peripheral side surface of the screw 33 is matched with a lifting seat 36, for example, the screw 33 is in threaded connection with the inner wall of the lifting seat 36, when the height of the shelf 2 is adjusted, the driving motor 32 is started to drive the screw 33 to rotate, so that the lifting seat 36 is driven to move linearly up and down, the lifting frame 37 and the shelf 2 are driven to move automatically up and down, and the problem that the shelf 2 is not stable in operation due to the fact that a plurality of driving devices are difficult to synchronously operate when lifting is avoided; the lower end of the fixed seat 31 is horizontally provided with a chute A312; the surface of the baffle 4 is provided with a pair of guide grooves 41; the inner wall of the guide groove 41 is engaged with the elevating device 3.

Preferably, as shown in fig. 1-3, one side of the lifting seat 36 is hinged with a pair of connecting rods 35, and the pair of connecting rods 35 are respectively distributed on two sides of the lifting seat 36; the upper ends of the pair of connecting rods 35 are hinged with a lifting frame 37; the lower ends of the connecting rods 35 are hinged with a sliding block A34, the sliding blocks A34 are distributed on two sides of the lifting seat 36 respectively, and the sliding blocks A34 move linearly along the sliding grooves A312.

Preferably, as shown in fig. 3-4, the lower end of the lifting frame 37 is provided with a sliding chute B371; the sliding groove B371 and the sliding groove A312 are arranged in parallel; a pair of sliders B372 are slidably connected to the sliding groove B371, and the sliders B372 move linearly along the sliding groove B371.

Preferably, as shown in fig. 3-4, each of the pair of tie bars 35 includes a tie bar lower end 352 and a tie bar upper end 353.

Preferably, as shown in fig. 3-4, a hinge point a341 is provided on each side of a pair of sliders a 34; one side of each of the pair of sliding blocks B372 is provided with a hinge point B373; hinge point a341 is hinged to the lower end 352 of the connecting rod; hinge point B373 is hinged to the connecting rod upper end 353.

Preferably, as shown in fig. 3-4, the surface of the fixed base 31 is provided with a pair of lifting chutes 311, and the lifting chutes 311 are arranged in the same direction as the moving direction of the lifting frame 37.

Preferably, as shown in fig. 3-4, the crane 37 is a U-shaped frame structure; clamping blocks are arranged at two ends of the lifting frame 37; the fixture block is connected with the inner wall of the lifting chute 311 in a sliding way, so that the lifting frame 37 can be guided and limited conveniently.

Preferably, as shown in fig. 3-4, the screw 33 passes through the lifting frame 37, and the end of the screw 33 is matched with a limit block 5; the limiting block 5 and the fixing seat 31 are fixedly installed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic lifting device for refrigerator shelves comprises a box body (1) and shelves (2); the method is characterized in that: the device also comprises a lifting device (3) and a baffle (4);

the lifting device (3) comprises a fixed seat (31); a driving motor (32) is fixedly arranged on the fixed seat (31); the output end of the driving motor (32) is connected with a screw rod (33); the peripheral side surface of the screw rod (33) is matched with a lifting seat (36);

the lower end of the fixed seat (31) is horizontally provided with a sliding chute A (312);

the surface of the baffle (4) is provided with a pair of guide grooves (41); the inner wall of the guide groove (41) is matched with the lifting device (3).

2. An automatic lifting device for refrigerator shelves according to claim 1, characterized in that a pair of connecting rods (35) is hinged on one side of said lifting seat (36);

the upper ends of the connecting rods (35) are hinged with a lifting frame (37); the lower ends of the connecting rods (35) are hinged with a sliding block A (34).

3. The automatic refrigerator shelf lifting device as claimed in claim 2, wherein the lifting frame (37) is provided at its lower end with a sliding groove B (371); the sliding groove B (371) and the sliding groove A (312) are arranged in parallel; and a pair of sliding blocks B (372) is connected in the sliding groove B (371) in a sliding manner.

4. An automatic refrigerator shelf lifting device according to claim 2 or 3, characterized in that a pair of said connecting rods (35) each comprise a connecting rod lower end (352) and a connecting rod upper end (353).

5. The automatic refrigerator shelf lifting device as claimed in claim 4, wherein a hinge point A (341) is provided on each side of a pair of said sliding blocks A (34); one side of each of the pair of sliding blocks B (372) is provided with a hinge point B (373);

the hinge point A (341) is hinged with the lower end (352) of the connecting rod; and the hinge point B (373) is hinged with the upper end (353) of the connecting rod.

6. An automatic lifting device for refrigerator shelves according to claim 1 or 5, characterized in that a pair of lifting chutes (311) are provided on the surface of the fixed base (31).

7. An automatic refrigerator shelf lifting device as claimed in claim 6, characterized in that said lifting frame (37) is a U-shaped frame structure; clamping blocks are arranged at the two ends of the lifting frame (37); the fixture block is connected with the inner wall of the lifting chute (311) in a sliding way.

8. The automatic refrigerator shelf lifting device as claimed in claim 2 or 7, wherein the lead screw (33) passes through the lifting frame (37), and a limit block (5) is fitted at the end of the lead screw (33); the limiting block (5) is fixedly installed with the fixing seat (31).