CN109084513B

CN109084513B - Drawer assembly and refrigerator

Info

Publication number: CN109084513B
Application number: CN201810972970.6A
Authority: CN
Inventors: 赵振雷; 韩立利; 王仁华; 徐贵恒; 许付松; 刘宜敞; 刘恒友; 宿建光; 庞春铭
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2018-08-24
Filing date: 2018-08-24
Publication date: 2021-02-02
Anticipated expiration: 2038-08-24
Also published as: CN109084513A

Abstract

The invention discloses a drawer assembly and a refrigerator, which comprise a sliding guide rail, a drawer assembled with the sliding guide rail and a guide rail bracket used for supporting the sliding guide rail, wherein a rotating mechanism is arranged between a box body and the sliding guide rail, and the sliding guide rail is rotatably connected to the box body through the rotating mechanism; the drawer is provided with a first gravity center position when pushed into the innermost limit position and a second gravity center position when pulled out to the outermost limit position, the rotation center of the rotating mechanism is arranged between the first gravity center position and the second gravity center position, and when the drawer moves to the innermost limit position, one end of the sliding guide rail close to the inner side of the box body inclines downwards; when the drawer moves to the outermost limit position, one end of the sliding guide rail, which is close to the outer side of the box body, inclines downwards. By applying the drawer assembly, the drawer has a self-closing function and low noise; meanwhile, the problem of large local tension is solved; the sliding guide rail does not need to be clamped on the box body, sealing is not needed, the cost is low, the installation and operation efficiency is high, and the maintainability is good.

Description

Drawer assembly and refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a drawer assembly and a refrigerator.

Background

At present, the simple guide rail used on the refrigerator usually adopts a certain fall formed by making a local fall on the guide rail or taking the track surface of the guide rail as an inclined surface, so that the drawer has a certain self-closing function when being pushed back to reset. As shown in fig. 1, in the process of pulling out the drawer, when the drawer moves from a point a 'to a point B', the drawer moves in a climbing manner, a large pulling force is required, and when the drawer moves from the point B 'to the point C', the drawer belongs to a stable movement process, and is pulled out with uniform force; when the drawer is pushed back to reset, the drawer moves from the point C ' to the point B ', the stable movement process is adopted, the constant thrust is kept, when the drawer moves to the point B ', the height difference exists between the point B ' and the point A ', the drawer can reset only by inertia movement without the thrust, and the drawer has the self-closing function. When the drawer moves to the point a', the drawer stops, and according to the principle of conservation of momentum, the momentum of the drawer (E = mv) becomes 0 in a very short time, and a large impact force F (F = v/t × m) is generated, so that an impact sound is generated when the drawer is reset.

The drawer is hard to pull out in the structure mode, and the impact force between the drawer and the guide rail is large and the noise is large when the drawer is reset. And need make specific guide rail assembly structure on the box, increased the mould expense, it is also not very convenient when guide rail installation, take out, influence production efficiency and user experience.

Disclosure of Invention

Based on the technical problem, the invention aims to provide the drawer assembly and the refrigerator, wherein the drawer assembly is labor-saving, low in noise and low in cost when the drawer is pulled out and pulled out.

In order to solve the technical problems, the invention adopts the following technical scheme:

a drawer assembly comprises a sliding guide rail, a drawer assembled with the sliding guide rail and a guide rail bracket used for supporting the sliding guide rail, wherein a rotating mechanism is arranged between a box body and the sliding guide rail, and the sliding guide rail is rotatably connected to the box body through the rotating mechanism; the drawer is provided with a first gravity center position when pushed into the innermost limit position and a second gravity center position when pulled out to the outermost limit position, the rotation center of the rotating mechanism is arranged between the first gravity center position and the second gravity center position, and when the drawer moves to the innermost limit position, one end of the sliding guide rail close to the inner side of the box body inclines downwards; when the drawer moves to the outermost limit position, one end of the sliding guide rail, which is close to the outer side of the box body, inclines downwards.

In one embodiment, the rotation mechanism includes a mount; the mounting seat is fixedly connected with the box body, and the sliding guide rail is rotatably connected to the mounting seat.

In one embodiment, the rotating mechanism further comprises a bearing disposed between the sliding guide and the mounting seat.

In one embodiment, the box body is provided with a mounting hole, and the mounting seat is fixedly clamped with the mounting hole.

In one embodiment, the mounting seat comprises a cover body part and a flange part arranged at the end part of the cover body part, the bearing is arranged in the inner cavity of the cover body part, a buckle is arranged on the outer side surface of the cover body part, and the cover body part extends out of the mounting hole and is clamped with the box body through the buckle and the flange part. In one embodiment, the rotating mechanism comprises a rotating shaft, the rotating shaft is rotatably arranged on the box body, the rotating shaft is provided with a hollow cavity, the guide rail is provided with an insertion part, and the insertion part of the guide rail is fixedly inserted into the hollow cavity of the rotating shaft.

In one embodiment, the drawer is provided with rolling wheels for sliding along the sliding guide.

In one embodiment, the sliding guide rail is further provided with a rotating wheel for supporting the sliding of the drawer.

In one embodiment, the guide rail bracket is a bladder rib arranged on the box body.

A refrigerator comprises the drawer assembly.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the drawer assembly, the sliding guide rail is improved, the local fall on the sliding guide rail is changed into the slope of the whole guide rail surface, the drawer rotates along with the sliding guide rail when being pushed back to reset, and self-closing is formed through the smaller fall, so that the drawer is ensured to have a self-closing function, the impact force is reduced, and the noise is reduced; meanwhile, the problem of large local tension is solved, a user can pull the drawer uniformly all the time, and the experience effect is good; in addition, the sliding guide rail is connected with the box body through the rotating mechanism, the sliding guide rail does not need to be clamped on the box body, a positioning structure and an installation structure do not need to be made on the box liner, sealing is not needed, the cost of a die is saved, the cost is low, the installation and operation efficiency is high, and the maintainability is good.

Drawings

FIG. 1 is a schematic view of a drawer assembly according to the prior art;

FIG. 2 is a schematic view of the drawer assembly of the present invention;

FIG. 3 is a schematic view of the sliding rail structure of the drawer assembly of the present invention;

FIG. 4 is a schematic view of the assembly of the sliding guide of the drawer assembly of the present invention to the cabinet;

FIG. 5 is a cross-sectional view of the assembly of the sliding guide of the drawer assembly of the present invention;

FIG. 6 is a schematic view of the assembly of the bearing and mounting base of the drawer assembly of the present invention to the cabinet;

FIG. 7 is a schematic view of the sliding guide rail of the drawer assembly of the present invention in a state where the drawer is not pulled out;

FIG. 8 is a schematic view of the sliding guide of the drawer assembly of the present invention with the drawer extended;

FIG. 9 is a schematic view of a drawer assembly according to the present invention;

FIG. 10 is a schematic view of the mounting seat and bearing of the drawer assembly of the present invention;

FIG. 11 is a schematic view of the construction of the mounting base in the drawer assembly of the present invention;

description of reference numerals:

a case 100; a bladder tendon 110;

a slide guide 200; a rotating wheel 210;

a drawer 300; a rolling wheel 310;

a rotation mechanism 400; a mounting seat 410; a lid portion 411; a flange portion 412; a buckle 413; a bearing 420; and a screw 430.

Detailed Description

Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings, but which can be embodied in many different forms and varied in the manner defined and covered by the claims.

Referring to fig. 2 to 6, a drawer assembly in one embodiment of the present invention includes a slide rail 200, a drawer 300 assembled with the slide rail 200, and a rail housing for supporting the slide rail 200. In this embodiment, as shown in fig. 4, the rail bracket is a bladder rib 110 provided on the box body 100. Wherein a certain gap is provided between the sliding guide 200 and the guide bracket in the vertical direction. Referring to fig. 4 and 5, a rotation mechanism 400 is provided between the casing 100 and the slide rail 200, and the slide rail 200 is rotatably coupled to the casing 100 in a vertical direction by the rotation mechanism 400. The slide rail 200 can be rotated up and down along the casing 100 by a small amount on the upper side of the rail housing by the rotating mechanism 400. Drawer 300 has a first center of gravity position and a second center of gravity position. As shown in fig. 7, the first barycentric position a is a barycentric position when the drawer 300 is pushed into the innermost extreme position; as shown in fig. 8, the second barycentric position C is the barycentric position when pulled out to the outermost limit position. The rotation center of the rotating mechanism 400 is disposed between the first center of gravity position a and the second center of gravity position C, i.e., position B. When the drawer 300 moves to the innermost limit position, one end of the sliding guide rail 200 close to the inner side of the box body inclines downwards; when the drawer 300 moves to the outermost limit position, one end of the slide rail 200 near the outer side of the cabinet is inclined downward. That is, when the drawer 300 is pushed to the innermost limit position, the rear side of the sliding guide 200 is inclined downward, and the bottom of the rear end of the drawer 300 abuts against the guide rail bracket; when the drawer 300 is pulled out to the outermost limit position, the outer side of the slide rail 200 is inclined downward, and the bottom of the front end of the drawer 300 abuts against the rail bracket.

Compared with the prior art, the guide surface of the sliding guide 200 in this embodiment is a plane, and there is no vertical drop, and the sliding guide 200 is installed on the box 100 through the bearing 420, and the drop is formed by rotation, so that the drawer 300 has a self-closing function when closed. As shown in fig. 7, when the drawer 300 is not pulled out, the center of gravity of the drawer 300 is at the first center of gravity position a, the rear end of the sliding guide rail 200 contacts the bladder rib 110, during the pulling out process, the drawer 300 is slightly pulled out by a distance d1, the center of gravity of the drawer 300 coincides with the axial point B of the bearing 420, the drawer 300 is continuously pulled out, the sliding guide rail 200 rotates counterclockwise around the bearing 420, the center of gravity of the drawer 300 is at the second center of gravity position C, the front end of the sliding guide rail 200 contacts the bladder rib 110, and at this time, the drawer 300 moves downhill and is pulled out with great labor. When the drawer 300 is closed, when the gravity center of the drawer 300 moves from the point C to the point B, the drawer 300 moves in a climbing manner, but the pushing force is small because the gradient is small. When the gravity center of the drawer 300 moves backwards continuously, the sliding guide rail 200 rotates clockwise, the rear end of the sliding guide rail 200 is in contact with the liner rib 110, at the moment, the drawer 300 moves downhill, but the process of the drawer 300 from the point C to the point B is consistent with the process of climbing, so that the momentum of the drawer 300 moving to the point A is small, the impact force is small, and the noise is small.

According to the drawer assembly, through improvement on the sliding guide rail 200, the local fall on the sliding guide rail 200 is changed into the slope of the whole guide rail surface, when the drawer 300 is pushed back to reset, the drawer 300 rotates along with the sliding guide rail 200, self-closing is formed through the smaller fall, the drawer 300 is ensured to have the self-closing function, the impact force is reduced, and the noise is reduced; meanwhile, the problem of large local tension is solved, a user can pull the drawer 300 with uniform force all the time, and the experience effect is good; in addition, the sliding guide rail 200 is connected with the box body 100 through the rotating mechanism 400, the sliding guide rail 200 does not need to be clamped on the box body 100, a positioning structure and an installation structure do not need to be made on a box liner, sealing is not needed, the cost of a mold is saved, the cost is low, the installation operation efficiency is high, and the maintainability is good.

In the present embodiment, as shown in fig. 10, the rotating mechanism 400 includes a mount 410 and a bearing 420 provided on the mount 410. The mounting seat 410 is fixedly connected to the case 100. As shown in fig. 4 and 5, the sliding guide 200 is fixed to the inner race of the bearing 420 by a screw 430. In another embodiment, the sliding guide 200 is directly matched with the rotating shaft to form a rotatable mechanism, and a position drop can be generated in the vertical direction when the drawer 300 is pushed or pulled, so that the same effect can be achieved. The sliding guide rail 200 and the rotating shaft are made of wear-resistant materials, the rotating mechanism 400 comprises a rotating shaft, the rotating shaft is rotatably arranged on the box body 100 and is provided with a hollow cavity, the guide rail is provided with an inserting part, and the inserting part of the guide rail is fixedly inserted into the hollow cavity of the rotating shaft. The rotating shaft is covered with a rotating shaft cover at the outer side of the case 100.

The box 100 is provided with a mounting hole, and the mounting seat 410 is fixedly clamped with the mounting hole. Specifically, referring to fig. 10 and 11, the mount 410 includes a cover portion 411 and a flange portion 412 provided at an end of the cover portion 411. The bearing 420 is fixedly disposed in the inner cavity of the cover 411. Preferably, the bearing 420 is fixed to the mounting seat 410 in a snap-fit manner, and the bearing 420 and the mounting seat 410 are in an interference fit. The assembly structure of the mounting seat 410 and the box body 100 is as follows: the outer side surface of the cover part 411 is provided with a buckle 413, the cover part 411 is installed from the inner side of the box body 100, and the extending installation hole is clamped with the box body 100 through the buckle 413 and the flange part 412. The mounting seat 410 can be directly clamped and mounted on the box body 100 without sealing, and the mounting operation efficiency is high.

In order to make the drawing process of the drawer 300 smoother, as shown in fig. 9, rolling wheels 310 for sliding along the sliding rails 200 are provided on the drawer 300. The sliding guide 200 is further provided with a rotating wheel 210 for supporting the sliding of the drawer 300. In which the rolling wheel 310 is disposed at the rear side of the drawer 300 and the rolling wheel 210 is disposed at the front side within the sliding guide 200. The drawer 300 is provided at a side thereof with an elongated slider structure, which is engaged with the sliding guide 200 to perform a sliding operation.

In this embodiment, rail brackets is the courage muscle 110 that sets up on box 100, need not the special guide rail muscle of shaping on the box 100, use the installation courage muscle 110 of layer frame can, be favorable to the universalization of box 100, be favorable to the propulsion of follow-up product, reduce the mould expense, provide the rate of utilization of mould.

The invention further comprises a refrigerator which comprises the drawer assembly. It should be noted that the drawer assembly of the present invention can also be used in other appliance products having drawers, and is not limited to refrigerator products.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A drawer component comprises a sliding guide rail, a drawer assembled with the sliding guide rail and a guide rail bracket used for supporting the sliding guide rail, and is characterized in that a rotating mechanism is arranged between a box body and the sliding guide rail, and the sliding guide rail is rotationally connected to the box body through the rotating mechanism; the guide surface of the sliding guide rail is a plane; the drawer is provided with a first gravity center position when pushed into the innermost limit position and a second gravity center position when pulled out to the outermost limit position, the rotation center of the rotating mechanism is arranged between the first gravity center position and the second gravity center position, and when the drawer moves to the innermost limit position, one end of the sliding guide rail close to the inner side of the box body inclines downwards; when the drawer moves to the outermost limit position, one end of the sliding guide rail, which is close to the outer side of the box body, is inclined downwards; the distance from the first center of gravity position to the rotation center of the rotating mechanism is smaller than the distance from the second center of gravity position to the rotation center of the rotating mechanism.

2. The drawer assembly of claim 1, wherein the rotation mechanism includes a mount; the mounting seat is fixedly connected with the box body, and the sliding guide rail is rotatably connected to the mounting seat.

3. The drawer assembly of claim 2, wherein the rotation mechanism further comprises a bearing disposed between the sliding rail and the mount.

4. The drawer assembly of claim 3, wherein the housing defines a mounting hole, and the mounting seat is secured to the mounting hole.

5. The drawer assembly of claim 3, wherein the mounting base comprises a cover portion and a flange portion disposed at an end of the cover portion, the bearing is disposed in an inner cavity of the cover portion, a buckle is disposed on an outer side surface of the cover portion, and the cover portion extends out of the mounting hole and is clamped with the box body through the buckle and the flange portion.

6. The drawer assembly of claim 1, wherein the rotating mechanism includes a rotating shaft rotatably disposed on the box body, the rotating shaft has a hollow cavity, the guide rail has an insertion portion, and the insertion portion of the guide rail is fixedly inserted into the hollow cavity of the rotating shaft.

7. The drawer assembly of claim 1, wherein the drawer is provided with rolling wheels for sliding movement along the slide rails.

8. The drawer assembly of claim 7, wherein the sliding rail further comprises a rotatable wheel for supporting the drawer to slide.

9. The drawer assembly of claim 1, wherein the rail bracket is a bladder rib disposed on the cabinet.

10. A refrigerator comprising a drawer assembly according to any of claims 1 to 9.