A middle guide rail support structure for a refrigerator and a refrigerator

Abstract

The application provides a refrigerator middle guide rail support structure and a refrigerator, and relates to the technical field of refrigerator manufacturing. The middle guide rail support structure is a T-shaped beam integrated middle guide rail support piece integral foaming structure, which comprises a T-shaped beam body and a middle guide rail support arm formed by extending backward from the T-shaped beam body. The two are integrally formed and internally provided with a foaming filling cavity. The cavity is filled with foaming material to form an integral rigid support. The middle guide rail support arm is used for directly installing the middle guide rail of the refrigerator drawer. The end of the middle guide rail support arm is a suspended free end, which is not mechanically connected with the refrigerator air duct cover plate and does not contact each other. The application cancels the independent guide rail support piece through integrated foaming and cantilever suspension design, avoids the stress deformation of the air duct cover plate, completely solves the problems of guide rail support falling off and drawer tilting, simultaneously simplifies assembly and reduces cost, has high structural strength and good stability, and is suitable for the drawer guide rail support of a multi-door refrigerator.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and in particular to a central guide rail support structure for a refrigerator and a refrigerator. Background Technology

[0002] like Figure 1-2 As shown, the drawer slides of existing multi-door refrigerators generally adopt a structure that is assembled from three parts: a T-beam, an independent guide rail support, and an air duct cover. The front end of the independent guide rail support is fixed to the T-beam, and the end end is fixed to the air duct cover to achieve mid-section support.

[0003] This traditional structure has the following drawbacks:

[0004] 1. The low strength of the duct cover plate can easily lead to unstable guide rail support connection and deformation under stress;

[0005] 2. The reliability of multi-piece splicing is poor. Under load and repeated pulling, the support is prone to falling off and the drawer is prone to tilting.

[0006] 3. Independent guide rail supports increase costs for mold making, logistics, warehousing, and manual assembly, resulting in low production efficiency;

[0007] 4. After-sales repair is cumbersome, resulting in a poor user experience and a high market defect rate.

[0008] Therefore, the present invention provides an integrated foamed support structure to solve the above problems at their root. Summary of the Invention

[0009] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a guide rail support structure for refrigerators and a refrigerator, which solves the technical problems of traditional guide rail supports being prone to falling off, air duct covers being prone to deformation, drawers tilting, complex assembly, and high cost.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A refrigerator center guide rail support structure, characterized in that it includes: a T-shaped beam body and a center guide rail support arm formed by extending rearward from the T-shaped beam body;

[0012] The T-beam body and the middle guide rail support arm are integrally formed structures, and the interior is provided with a foam filling cavity, which is filled with foam insulation material to form an overall rigid support.

[0013] The central guide rail support arm is configured to directly mount the central guide rail of the refrigerator drawer, and the end of the central guide rail support arm is a suspended free end. In the installed state, it has no mechanical connection with the refrigerator air duct cover and does not contact each other.

[0014] Furthermore, the T-beam body and the middle guide rail support arm are integrally injection molded.

[0015] Furthermore, a clearance gap is provided between the end of the middle guide rail support arm and the air duct cover plate.

[0016] Furthermore, two central guide rails are provided and symmetrically distributed at both ends of the central guide rail support arm.

[0017] Furthermore, the middle guide rail support arm has an integrally formed guide rail mounting surface for fixed connection with the middle guide rail.

[0018] Furthermore, the foam filling cavity is provided with a reinforcing rib structure, and the foam insulation material wraps the reinforcing rib structure and fills the foam filling cavity.

[0019] A refrigerator includes a cabinet, an inner liner, an air duct cover, and drawers, characterized in that it further includes the aforementioned refrigerator central guide rail support structure; the T-shaped beam body is fixedly installed on the cabinet.

[0020] Furthermore, the duct cover is a freezer compartment duct cover, and a space for installing the evaporator is formed between the duct cover and the housing.

[0021] The present invention has the following beneficial effects:

[0022] This invention integrates the central guide rail support arm with the T-beam body, internally foaming to enhance rigidity, significantly improving cantilever rigidity and increasing load-bearing capacity; the support arm adopts a cantilever structure, not connected to or in contact with the air duct cover, and the force is entirely borne by the integrated structure, preventing air duct deformation, support detachment, and drawer tilting; the invention eliminates independent support components, reduces the number of parts, simplifies assembly processes, and lowers overall costs. Attached Figure Description

[0023] Figure 1 A 3D view of the existing refrigerator guide rail installation structure (without hidden inner liner);

[0024] Figure 2 A partial 3D view of the existing refrigerator guide rail installation structure (with concealed inner liner);

[0025] Figure 3 This is a perspective view of the integrated foam structure (without hidden inner liner) of the present invention.

[0026] Figure 4 This is a front view of the integrated foam structure of the present invention (without hidden inner liner);

[0027] Figure 5 for Figure 4 AA section view;

[0028] Figure 6 This is a partial perspective view of the integrated foam structure (hidden inner liner) of the present invention.

[0029] Figure 7 This is a perspective view of the overall structure of the refrigerator of the present invention (without the inner liner hidden);

[0030] Figure 8 This is a perspective view of the overall structure (hidden inner liner) of the refrigerator of the present invention;

[0031] In the diagram: 1. Box body; 2. Inner liner; 3. Air duct cover; 4. Drawer; 5. T-beam body; 101. Independent guide rail support; 201. Middle guide rail support arm; 202. Foam filling cavity; 203. Guide rail mounting surface; 204. Middle guide rail; 205. Clearance. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0033] Example 1

[0034] like Figure 3-6 As shown, this embodiment provides a middle guide rail support structure for a refrigerator, including a T-shaped beam body 5 and a middle guide rail support arm 201.

[0035] The T-beam body 5 serves as the structural support for the refrigerator to achieve compartment separation. The central guide rail support arm 201 is integrally formed by extending rearward from the rear surface of the T-beam body 5, with the extension direction facing the air duct cover 3 inside the refrigerator.

[0036] The T-beam body 5 and the middle guide rail support arm 201 are made by an integral molding process, preferably by integral injection molding. There are no splices, screws, or buckles between the two, and the whole is a single component.

[0037] The interior of the T-beam body 5 and the middle guide rail support arm 201 together form a foam-filled cavity 202, which can be a continuous or segmented closed cavity. The foam-filled cavity 202 is filled with foamed thermal insulation material. After the foamed material expands and solidifies in the cavity, it forms an integral rigid support with the injection-molded shell, which significantly improves the bending strength, sagging resistance and structural stability of the cantilever section.

[0038] To further enhance strength, multiple sets of reinforcing ribs can be set inside the foam filling cavity 202. The reinforcing ribs are integrally injection molded with the outer shell. After the foam material is injected, it wraps around all the reinforcing ribs and completely fills the foam filling cavity 202, so that the shell, reinforcing ribs and foam material form a composite load-bearing structure.

[0039] The central guide rail support arm 201 is used to directly install the central guide rail 204 of the refrigerator drawer. It has an integrally formed guide rail mounting surface 203. The guide rail mounting surface 203 can be set on the top, left or right side of the central guide rail support arm 201. The guide rail mounting surface 203 has reserved screw holes or buckle positions, so that the central guide rail 204 can be directly fixed by fasteners or snap-fit, without the need for other transition brackets.

[0040] The key structure of this embodiment is that the end of the middle guide rail support arm 201 is a suspended free end. In the assembled state, there is a clearance gap 205 between the end of the middle guide rail support arm 201 and the air duct cover plate 3. The two have no mechanical connection, do not contact each other, and do not transmit force, which completely avoids the air duct cover plate 3 from being deformed by force, and at the same time eliminates the problem of unstable support caused by the size deviation and assembly deviation of the air duct cover plate 3.

[0041] Example 2

[0042] like Figure 7-8 As shown, this embodiment provides a refrigerator, including a cabinet 1, an inner liner 2, an air duct cover 3, a drawer 4, a central guide rail 204, and the central guide rail support structure for the refrigerator described in the above embodiment.

[0043] The cabinet 1 is the external load-bearing shell of the refrigerator, the inner liner 2 is the internal storage compartment of the refrigerator, and the air duct cover 3 is the air duct cover of the freezer compartment, which is located on the rear side of the inner liner 2. The back of the air duct cover 3 and the cabinet 1 form a space for installing the evaporator to realize the refrigeration cycle.

[0044] The T-beam body 5 is fixedly installed on the box body 1 by screws, clips or embedding, and the installation position is stable and the load-bearing capacity is reliable.

[0045] The central guide rail support arm 201 extends backward from the T-beam body 5 (towards the air duct cover 3), with the extension length covering the support requirements of the drawer 4.

[0046] The central guide rail 204 is fixedly installed on the guide rail mounting surface 203 of the central guide rail support arm 201. The drawer 4 slides with the central guide rail 204, allowing it to be pulled out smoothly.

[0047] Because the central guide rail support arm 201 is suspended, the full load weight of drawer 4, the impact force of pulling out, and the vibration load of opening and closing the door are all borne by the integrated support structure. They will not be transmitted to the air duct cover, nor will they affect the evaporator assembly space. Long-term use will not cause problems such as support sagging, guide rail deviation, drawer tilting, or support falling off.

[0048] Example 3

[0049] The assembly process of the refrigerator in the above embodiment is as follows: The T-beam body 5 and the middle guide rail support arm 201 are integrally injection molded to form a semi-finished product with a foam filling cavity 202; foam insulation material is injected into the foam filling cavity 202 to fill the cavity and wrap the internal reinforcing ribs, and after curing, an integral rigid support structure is formed; the foamed support structure is fixed as a whole at a preset position on the refrigerator body 1 or inner liner 2; the middle guide rail 204 is directly fixed on the guide rail mounting surface 203 of the middle guide rail support arm 201; the drawer 4 is fitted with the middle guide rail 204 to complete the overall assembly.

[0050] In this invention, the guide rail support arm 201 adopts a cantilever structure. The load-bearing path of the drawer 4 is drawer 4, middle guide rail 204, middle guide rail support arm 201, T-beam body 5, and box 1, without passing through the air duct cover plate 3. The air duct cover plate 3 only undertakes the function of air supply and is not subject to external forces, deformation, or load-bearing. At the same time, the one-piece molding and internal foaming greatly improve the rigidity of the cantilever, ensuring that it will not sag, tilt, or fall off during long-term use.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A middle guide rail support structure for a refrigerator, characterized in that, include: T-beam body (5) and a central guide rail support arm (201) formed by extending the T-beam body (5) rearward. The T-beam body (5) and the middle guide rail support arm (201) are integrally formed structures, and the interior is provided with a foam filling cavity (202). The foam filling cavity (202) is filled with foam insulation material to form an overall rigid support. The middle guide rail support arm (201) is configured to directly install the middle guide rail (204) of the refrigerator drawer (4), and the end of the middle guide rail support arm (201) is a suspended free end. In the installation state, it has no mechanical connection with the refrigerator air duct cover (3) and does not contact each other.

2. The refrigerator center guide rail support structure according to claim 1, characterized in that, The T-beam body (5) and the middle guide rail support arm (201) are integrally injection molded.

3. The refrigerator center guide rail support structure according to claim 1 or 2, characterized in that, A clearance gap (205) is provided between the end of the middle guide rail support arm (201) and the air duct cover plate (3).

4. The refrigerator center guide rail support structure according to claim 1, characterized in that, The middle guide rail (204) is provided in two symmetrically distributed at both ends of the middle guide rail support arm (201).

5. The refrigerator center guide rail support structure according to claim 1 or 4, characterized in that, The middle guide rail support arm (201) has an integrally formed guide rail mounting surface (203) for fixed connection with the middle guide rail (204).

6. The refrigerator center guide rail support structure according to any one of claims 1-5, characterized in that, The foam filling cavity (202) is provided with a reinforcing rib structure, and the foam insulation material wraps the reinforcing rib structure and fills the foam filling cavity (202).

7. A refrigerator, comprising a cabinet (1), an inner liner (2), an air duct cover (3), and a drawer (4), characterized in that, It also includes the refrigerator center guide rail support structure as described in any one of claims 1-6; the T-beam body (5) is fixedly installed on the box body (1).

8. The refrigerator according to claim 7, characterized in that, The air duct cover (3) is the air duct cover of the freezer compartment, and a space for installing the evaporator is formed between the air duct cover (3) and the box body (1).

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