A refrigerator

Abstract

The present invention relates to the technical field of refrigeration equipment, and discloses a refrigerator, which includes a liner, a drawer, a slide rail assembly and a pulley assembly; the pulley assembly includes a rotating shaft, an inner race, an outer race and a roller member; the outer race is sleeved on the inner race, and a middle raceway and side raceways located on both sides of the middle raceway are formed between the outer race and the inner race; the roller member includes a roller and an elastic ring sleeved on the middle part of the roller, the roller is composed of two spherical parts connected in parallel, and the spherical parts are embedded in the side raceways; the elastic ring corresponds to the middle raceway and has a gap with the middle raceway, and the elastic ring is used to contact the middle raceway when the outer race is subjected to a predetermined pressure so as to share the pressure received by the roller. The double-spherical roller with an elastic ring provided in the middle proposed by the present invention can share part of the pressure received by the roller when the drawer bears a large load, reduce the wear of the roller during use, and reduce the use noise, solving the problems that the pulley component is prone to wear and generate a large noise during pushing and pulling when the drawer bears a large load.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and particularly to a refrigerator. Background Art

[0002] The performance of the drawer inside the refrigerator directly affects the quality of the refrigerator product and the consumer evaluation. When the existing drawer is used under a relatively large load, the pulley assembly is prone to wear, and a relatively large noise will also be generated during pushing and pulling, causing consumer complaints.

[0003] Therefore, the existing technology urgently needs to be improved. Summary of the Invention

[0004] The object of the present invention is to provide a refrigerator to solve the technical problems that when the drawer of the existing technology refrigerator is used under a relatively large load, the pulley assembly is prone to wear and a relatively large noise will also be generated during pushing and pulling.

[0005] To achieve the above object, the present invention provides a refrigerator, including:

[0006] A liner;

[0007] Wherein, it further includes a drawer, a slide rail assembly and a pulley assembly;

[0008] One of the slide rail assembly and the pulley assembly is symmetrically arranged on the inner side wall of the liner, and the other is symmetrically arranged on the outer side wall of the drawer to achieve sliding fit;

[0009] The pulley assembly includes a rotating shaft, an inner race, an outer race and a roller member;

[0010] The rotating shaft is arranged on the drawer or the liner, the inner race is sleeved on the rotating shaft, the outer race is sleeved on the inner race, and a middle raceway and side raceways located on both sides of the middle raceway are formed between the outer race and the inner race;

[0011] The roller member includes a roller and an elastic ring sleeved on the middle part of the roller. The roller is composed of two spherical parts connected in parallel, and the spherical parts are embedded in the side raceways; the elastic ring corresponds to the middle raceway and has a gap with the middle raceway, and the elastic ring is used to contact the middle raceway when the outer race is subjected to a predetermined pressure so as to share the pressure received by the roller.

[0012] In some embodiments of the present application, the middle connection part of the roller is recessed, and the whole forms a symmetrical gourd shape, and the elastic ring is sleeved on the recess of the roller.

[0013] In some embodiments of the present application, when the maximum outer diameter of the elastic ring is smaller than the maximum outer diameter of the spherical portion, the width of the middle rolling groove is equal to or greater than the width of the side rolling groove.

[0014] In some embodiments of the present application, when the maximum outer diameter of the elastic ring is larger than the maximum outer diameter of the spherical portion, the width of the middle rolling groove is greater than the width of the side rolling groove.

[0015] In some embodiments of the present application, a middle oil groove is provided at the middle rolling groove, and a side oil groove is provided at the side rolling groove.

[0016] In some embodiments of the present application, the pulley assembly further includes a sealing gasket;

[0017] The sealing gasket is respectively sleeved on both sides of the inner race and is located between the inner race and the outer race, and is used to seal the gap between the inner race and the outer race. A side oil groove is formed between the spherical portion and the sealing gasket.

[0018] In some embodiments of the present application, the pulley assembly further includes a pulley housing and a rubber ring;

[0019] The pulley housing is sleeved on the outer race. At least one circle of accommodation grooves is provided at the middle part thereof. The rubber ring is sleeved in the accommodation grooves, and the maximum outer diameter of the rubber ring is larger than the maximum outer diameter of the pulley housing.

[0020] In some embodiments of the present application, the slide rail assembly includes a first slide rail and a second slide rail;

[0021] The first slide rail is provided on the side wall of the box liner, and the second slide rail is provided on the side wall of the drawer;

[0022] At the rear part of the second slide rail on the drawer, the pulley assembly is provided to cooperate with the first slide rail. At the front part of the first slide rail on the box liner, the pulley assembly is provided to cooperate with the second slide rail.

[0023] In some embodiments of the present application, a sliding groove is formed on the first slide rail, and the pulley assembly provided on the drawer is arranged to slide in the sliding groove;

[0024] The pulley assembly provided on the box liner contacts the lower surface of the second slide rail and has a supporting effect on the second slide rail during sliding.

[0025] In some embodiments of the present application, the pulley assembly is provided on the box liner through a mounting seat;

[0026] The mounting seat includes a base plate, a stud and a fastening cover;

[0027] The pulley assembly is provided on the front surface of the substrate. The back surface of the substrate is connected to one end of the stud, and the other end of the stud passes through the mounting hole on the cabinet liner. A first latch is provided at the end of the stud close to the substrate.

[0028] The fastening cover is provided with a threaded hole with internal threads, and its front end surface is provided with a second latch. When the fastening cover is rotated so that the threaded hole is engaged with the stud to a predetermined position, the second latch forms a self-locking connection with the first latch.

[0029] Compared with the prior art, the beneficial effect of the refrigerator according to the embodiment of the present invention is as follows:

[0030] The refrigerator according to the embodiment of the present invention provides a pulley assembly, which includes a double-spherical roller with an elastic ring in the middle, and a middle rolling groove with a certain gap from the elastic ring is provided between the inner race and the outer race. When the drawer bears a large load, that is, when the pressure on the outer race increases, the elastic ring contacts the middle rolling groove to share part of the pressure received by the roller, reducing the wear of the roller during use and reducing the use noise, solving the problems that the pulley components are prone to wear when the drawer bears a large load and generate a large noise during pushing and pulling, improving the use quality of the drawer assembly and increasing the service life, and greatly enhancing the competitiveness of the refrigerator product and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic structural diagram of the cabinet liner and the drawer of the refrigerator according to the embodiment of the present invention;

[0033] Figure 2 It is a schematic structural diagram of the drawer;

[0034] Figure 3 It is an exploded structural diagram of the pulley assembly;

[0035] Figure 4 It is an axonometric structural diagram of the pulley assembly;

[0036] Figure 5 It is a sectional structural diagram of the pulley assembly;

[0037] Figure 6 It is a sectional structural diagram of the pulley assembly;

[0038] Figure 7 It is a schematic structural diagram of the cabinet liner and the mounting seat;

[0039] Figure 8 is a front - view exploded structural schematic diagram of the mounting base;

[0040] Figure 9 is a rear - view exploded structural schematic diagram of the mounting base;

[0041] Figure 10 is a structural schematic diagram of the box liner Figure 1 ;

[0042] Figure 11 is Figure 10 an enlarged view of part A in

[0043] Figure 12 is a structural schematic diagram of the box liner Figure 2 ;

[0044] Figure 13 is Figure 12 an enlarged view of part B in

[0045] In the figure, 100 is the box liner; 101 is the mounting hole; 102 is the positioning hole; 200 is the drawer; 300 is the pulley assembly; 301 is the middle rolling groove; 302 is the edge rolling groove; 303 is the edge oil groove; 304 is the middle oil groove; 310 is the rotating shaft; 320 is the inner race; 330 is the outer race; 340 is the roller part; 341 is the roller; 342 is the elastic ring; 350 is the sealing gasket; 360 is the pulley housing; 370 is the rubber ring; 410 is the first slide rail; 420 is the second slide rail; 500 is the mounting base; 510 is the base plate; 511 is the positioning protrusion; 520 is the stud; 521 is the first lock; 530 is the fastening cover; 531 is the screw hole; 532 is the second lock. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0047] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0048] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0049] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] As Figure 1 shown in Fig. -13, a refrigerator according to a preferred embodiment of the present invention mainly includes an inner liner 100, a drawer 200, a slide rail assembly, and a pulley assembly 300.

[0051] Among them, one of the slide rail assembly and the pulley assembly 300 is symmetrically arranged on the inner side wall of the inner liner 100, and the other is symmetrically arranged on the outer side wall of the drawer 200. The slide rail assembly and the pulley assembly are in sliding fit, enabling the drawer 200 to be pulled relative to the inner liner 100.

[0052] See Figure 3 Fig. -6, the pulley assembly 300 includes a rotating shaft 310, an inner race 320, an outer race 330, a roller member 340, a sealing gasket 350, a pulley housing 360, and a rubber ring 370.

[0053] The rotating shaft 310 is arranged on the drawer 200 or the inner liner 100. The inner race 320 is sleeved on the rotating shaft 310, and the outer race 330 is sleeved on the inner race 320. A middle raceway 301 and side raceways 302 located on both sides of the middle raceway 301 are formed between the outer race 330 and the inner race 320. Specifically, a semi-groove is provided on the outer surface of the inner race 320, and a semi-groove is provided on the inner surface of the outer race 330. When the outer race 330 is sleeved on the inner race 320, the two semi-grooves at corresponding positions respectively form the middle raceway 301 and the side raceway 302.

[0054] The roller member 340 includes a roller 341 and an elastic ring 342. The roller 341 is composed of two spherical parts connected in parallel, with a depression at the middle connection part, forming a symmetric gourd shape as a whole. The spherical parts are embedded in the side raceways 302.

[0055] The elastic ring 342 is sleeved on the recess of the roller 341, corresponding to the middle rolling groove 301, and there is a gap between the elastic ring 342 and the middle rolling groove 301.

[0056] When the drawer 200 bears a large load, it is equivalent to an increase in the pressure on the outer race 330, resulting in the compression of the width of the groove. When the width of the side rolling groove 302 is compressed, the friction between the roller 341 and the side rolling groove 302 increases, making the roller 341 prone to wear and generating a large amount of noise during operation. In this embodiment, an elastic ring 342 is provided in the middle of the roller 341. When the outer race 330 is subjected to a predetermined pressure, the middle rolling groove 301 is compressed to contact the elastic ring 342. At this time, the elastic ring 342 plays a role in sharing part of the pressure, thereby reducing the pressure on the roller 341 and reducing the friction between the roller 341 and the side rolling groove 302, achieving the effects of effectively reducing the wear of the roller 341 and reducing the noise generated during operation.

[0057] Preferably, the roller 341 is provided as a symmetric calabash shape with a middle recess, which is quite different from the shape of the traditional roller. The middle recess has a certain limiting effect on the elastic ring 342, making the elastic ring 342 not easy to shift, so as to evenly share the pressure on both sides.

[0058] Based on the shape of the roller 341, when the maximum outer diameter of the elastic ring 342 is smaller than the maximum outer diameter of the spherical part of the roller 341, the width of the middle rolling groove 301 (the distance between the bottom of the half groove on the outer race 330 and the inner race 320) is equal to or greater than the width of the side rolling groove 302, which can make there be a gap between the elastic ring 342 and the middle rolling groove 301.

[0059] In another embodiment, when the maximum outer diameter of the elastic ring 342 is larger than the maximum outer diameter of the spherical part of the roller 341, the width of the middle rolling groove 301 must be greater than the width of the side rolling groove 302 in order to make there be a gap between the elastic ring 342 and the middle rolling groove 301.

[0060] By adjusting the size of the gap between the elastic ring 342 and the middle rolling groove 301, and combining with the deformation degree of the material of the race when stressed, it can be determined at what pressure on the outer race 330 the elastic ring 342 contacts the middle rolling groove 301.

[0061] The sealing gaskets 350 are respectively sleeved on both sides of the inner race 320 and located between the inner race 320 and the outer race 330, for sealing the gap between the inner race 320 and the outer race 330. An edge oil groove 303 is formed between the spherical part of the roller 341 and the sealing gasket 350, and middle oil grooves 304 are formed on both sides of the middle rolling groove 301. The setting of the oil grooves can accommodate more lubricating oil to enhance the lubrication between the roller 341 or the elastic ring 342 and the rolling grooves, reduce friction, and thus reduce wear and noise.

[0062] The pulley housing 360 is sleeved on the outer race 330, and at least one circle of accommodation grooves (two circles are provided in the illustrated embodiment) are provided at the middle part thereof. The rubber ring 370 is sleeved in the accommodation grooves. The maximum outer diameter of the rubber ring 370 is greater than the maximum outer diameter of the pulley housing 360, and is used to contact the slide rail assembly when the pulley assembly 300 slides, so as to increase the load-bearing capacity of the pulley assembly 300 and reduce the wear of the pulley housing 360 during use.

[0063] In some embodiments of the present application, referring to Figure 1 -13, the slide rail assembly includes a first slide rail 410 and a second slide rail 420. The first slide rail 410 is provided on the side wall of the inner box 100, and the second slide rail 420 is provided on the side wall of the drawer 200. A pulley assembly 300 is provided at the rear part of the second slide rail 420 on the drawer 200 to cooperate with the first slide rail 410, and a pulley assembly 300 is provided at the front part of the first slide rail 410 on the inner box 100 to cooperate with the second slide rail. Preferably, a chute 411 is formed on the first slide rail 410, and the pulley assembly 300 provided on the drawer 200 is arranged to slide in the chute 411, and the chute 411 has a limiting and supporting effect on the pulley assembly 300. The pulley assembly 300 provided on the inner box 100 contacts the lower surface of the second slide rail 420 (as Figure 2 shown, Figure 2 the pulley assembly 300 at the bottom of the second slide rail 420 in

[0064] is the pulley assembly 300 provided on the inner box 100), and has a supporting effect on the second slide rail 420 when sliding.

[0065] Referring to Figure 7 -13, the pulley assembly 300 is provided on the inner box 100 through the mounting seat 500.

[0066] Specifically, the mounting seat 500 includes a base plate 510, a stud 520 and a fastening cover 530. The pulley assembly 300 is arranged on the front surface of the base plate 510. The back surface of the base plate 510 is connected to one end of the stud 520, and a plurality of positioning protrusions 511 are provided. The shape of the base plate 510 can be changed according to the shape of the first slide rail 410, such as Figure 7 and Figure 8The base plate 510 in different embodiments is provided with a mounting hole 101 and a positioning hole 102 on the box 100. The other end of the stud 520 is inserted into the mounting hole 101, and the positioning protrusion 511 is inserted into the positioning hole 102. A first lock catch 521 is provided on the end of the stud 520 close to the base plate 510. The fastening cover 530 is provided with a screw hole 531 with an internal thread, and a second lock catch 532 is provided on its front end. When the fastening cover 530 is rotated so that the screw hole 531 and the stud 520 are matched to the predetermined position, the second lock catch 532 forms a self-locking connection with the first lock catch 521. After installation, the base plate 510 is located on the inner side of the box 100, and the fastening cover 530 is located on the outer side of the box 100.

[0067] In summary, the refrigerator proposed in the present invention has at least the following advantages compared with the prior art:

[0068] First, the present application proposes a double spherical roller 341 with an elastic ring 342 in the middle, and a middle rolling groove 301 with a certain gap between the inner rolling ring 320 and the outer rolling ring 330. When the drawer 200 bears a large load, that is, when the pressure on the outer rolling ring 330 increases, the elastic ring 342 contacts the middle rolling groove 301 to share part of the pressure on the roller 341, thereby reducing the wear and tear of the roller 341 and reducing the noise during use. This solves the problem that the pulley component is easily worn when the drawer bears a large load and generates a large noise when pushed and pulled, thereby improving the use quality of the drawer assembly and increasing its service life, greatly enhancing the competitiveness and user experience of the refrigerator product.

[0069] Second, the present application sets the roller 341 to a symmetrical gourd shape with a middle depression, which is quite different from the traditional roller shape. The middle depression has a certain limiting effect on the elastic ring 342, making the elastic ring 342 not easy to shift, thereby evenly sharing the pressure on both sides, making the overall load-bearing capacity of the pulley assembly 300 better, and the wear on both sides of the roller 341 is evenly reduced when under pressure.

[0070] Third, each rolling groove is provided with an oil groove, which provides better lubrication for the roller member 340 and helps to further reduce the wear of the pulley assembly 300 during use.

[0071] Fourthly, the pulley housing 360 is provided with a rubber ring 370 protruding from its surface, which helps to further reduce the wear and tear on the surface of the pulley assembly 300.

[0072] Fifth, reasonably setting the matching positions of the slide rail assembly and the pulley assembly 300 on the box 100 and the drawer 200 helps to disperse the pressure on each pulley assembly 300 when the drawer 200 bears a large load, thereby reducing the wear and tear of the pulley assembly 300 and the pulling and pulling noise of the drawer 200.

[0073] Sixth, the pulley assembly 300 is installed on the inner container 100 through the mounting base 500 with a simple self-locking structure, making the installation of the pulley assembly 300 simple and reliable, reducing the risk of loosening when the pulley assembly 300 is used under the condition that the drawer 200 bears a large load, contributing to improving the use quality of the drawer assembly, increasing the service life, and greatly enhancing the competitiveness of the refrigerator product and the user experience.

[0074] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A refrigerator, comprising: An inner liner; Characterized in that it further comprises a drawer, a slide rail assembly and a pulley assembly; One of the slide rail assembly and the pulley assembly is symmetrically arranged on the inner side wall of the inner liner, and the other is symmetrically arranged on the outer side wall of the drawer to achieve sliding fit; The pulley assembly includes a rotating shaft, an inner race, an outer race and a roller member; The rotating shaft is arranged on the drawer or the inner liner, the inner race is sleeved on the rotating shaft, the outer race is sleeved on the inner race, and a middle raceway and side raceways located on both sides of the middle raceway are formed between the outer race and the inner race; The roller member includes a roller and an elastic ring sleeved on the middle part of the roller. The roller is composed of two spherical parts connected in parallel, and the spherical parts are embedded in the side raceways; the elastic ring corresponds to the middle raceway and has a gap with the middle raceway, and the elastic ring is used to contact the middle raceway when the outer race is subjected to a predetermined pressure so as to share the pressure received by the roller.

2. The refrigerator according to claim 1, characterized in that, The middle connection part of the roller is recessed, and the whole forms a symmetrical gourd shape, and the elastic ring is sleeved on the recess of the roller.

3. The refrigerator according to claim 2, wherein When the maximum outer diameter of the elastic ring is smaller than the maximum outer diameter of the spherical part, the width of the middle raceway is equal to or greater than the width of the side raceway.

4. The refrigerator according to claim 2, wherein, When the maximum outer diameter of the elastic ring is greater than the maximum outer diameter of the spherical part, the width of the middle raceway is greater than the width of the side raceway.

5. The refrigerator according to claim 1, characterized in that, An intermediate oil groove is provided at the middle raceway, and a side oil groove is provided at the side raceway.

6. The refrigerator according to claim 5, wherein, The pulley assembly further includes a sealing gasket; The sealing gaskets are respectively sleeved on both sides of the inner race and located between the inner race and the outer race, and are used to seal the gap between the inner race and the outer race. The side oil groove is formed between the spherical part and the sealing gasket.

7. The refrigerator according to claim 1, characterized in that, The pulley assembly further includes a pulley housing and a rubber ring; The pulley housing is sleeved on the outer race, and at least one circle of accommodation groove is provided at the middle part thereof. The rubber ring is sleeved in the accommodation groove, and the maximum outer diameter of the rubber ring is greater than the maximum outer diameter of the pulley housing.

8. The refrigerator according to claim 1, characterized in that, The slide rail assembly includes a first slide rail and a second slide rail; The first slide rail is arranged on the side wall of the inner liner, and the second slide rail is arranged on the side wall of the drawer; The pulley assembly is arranged at the rear part of the second slide rail on the drawer to cooperate with the first slide rail, and the pulley assembly is arranged at the front part of the first slide rail on the inner liner to cooperate with the second slide rail.

9. The refrigerator according to claim 8, wherein, A chute is formed on the first slide rail, and the pulley assembly arranged on the drawer is arranged in the chute to slide; The pulley assembly arranged on the inner liner contacts the lower surface of the second slide rail and has a supporting effect on the second slide rail during sliding.

10. The refrigerator according to claim 9, characterized in that, The pulley assembly is arranged on the inner liner through a mounting seat; The mounting seat includes a base plate, a stud and a fastening cover; The pulley assembly is arranged on the front surface of the base plate. The back surface of the base plate is connected to one end of the stud, the other end of the stud passes through the mounting hole on the inner liner, and a first lock catch is provided at the end of the stud close to the base plate; The fastening cover is provided with a threaded hole with internal threads, and its front end face is provided with a second locking buckle. When the fastening cover is rotated so that the threaded hole is engaged with the stud to a predetermined position, the second locking buckle forms a self-locking connection with the first locking buckle.

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