Pushing telescopic refrigerator drawer limiting component

Abstract

This invention relates to the field of limiting components, and provides a press-and-retractable refrigerator drawer limiting assembly, including a housing with a track cylinder fixedly sleeved inside; a pressing column with a coaxial centering cylinder fixedly sleeved inside; a limiting sleeve movably sleeved between the pressing column and the centering cylinder; and a positioning shaft movably sleeved between the centering cylinder and the limiting column. The pressing column has two states: extended and retracted relative to the housing, and can switch between these two states when pressed by external force. Therefore, this invention improves convenience by allowing the pressing column to be switched between extended and retracted states according to actual usage scenarios. This invention can be pre-assembled and then installed onto the inner liner, integrating the existing two assembly processes into one, thus optimizing the production process.

Description

Technical Field

[0001] This invention belongs to the technical field of limiting components, and particularly relates to a press-and-retractable refrigerator drawer limiting component. Background Technology

[0002] To prevent drawers from being fully pulled out during use, refrigerator interiors are equipped with limiting structures. As disclosed in Chinese Patent CN201810475377.0, existing limiting structures typically include a fixing base and a limiting post.

[0003] During production, the fixing base is installed during the pre-assembly stage of the cabinet, and is positioned after foaming. Then, the limiting post is installed on the inner liner. The two components of the existing limiting structure are completed in two separate processes, which is cumbersome. In addition, the limiting post is fixed with screws, which makes cleaning the cabinet inconvenient due to the small space inside the liner.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0005] To address the aforementioned shortcomings, this invention improves convenience by allowing the push-button to extend or retract depending on the actual usage scenario. Furthermore, this invention can be pre-assembled and then installed onto the inner liner, integrating the existing two assembly processes into one, thus optimizing the production process.

[0006] To address the aforementioned problems, this invention provides a press-and-retractable refrigerator drawer limiting component, comprising a housing with one open end and one closed end; a track cylinder is fixedly sleeved inside the housing; a positioning shaft is fixedly sleeved in the housing, and a return spring is sleeved on the positioning shaft.

[0007] It also includes a pressing column, which has a hollow structure and a centering cylinder that is fixedly sleeved inside it and coaxial with it; a limiting sleeve is movably sleeved between the pressing column and the centering cylinder; the centering cylinder is movably sleeved with a positioning shaft, and a return spring is sleeved on the outside of the positioning shaft; the inner wall of the limiting sleeve has a protruding spring pressure surface for abutting the return spring.

[0008] The pressing column has two states: extended and retracted relative to the outer shell. The pressing column can switch between the two states when pressed by external force.

[0009] Multiple track blocks are evenly arranged around the inner wall of the track cylinder, and a first sliding groove is formed between two adjacent track blocks; a second sliding groove is opened on the track block, and a stop surface is formed at the end of the track block facing the outer shell;

[0010] Multiple anti-rotation protrusions are evenly arranged around the outer wall of the pressing column, and each anti-rotation protrusion is slidably arranged in the first or second groove of the corresponding track cylinder; the end face of the pressing column facing the outer shell forms a driving surface, and the driving surface has a uniform concave-convex undulation structure;

[0011] Multiple limiting protrusions are evenly arranged around the outer wall of the limiting sleeve. Each limiting protrusion has a pushing inclined surface that contacts and engages with the driving surface of the pressing column. When the pressing column is extended relative to the outer shell, the limiting protrusion is located in the first sliding groove. When the pressing column is retracted relative to the outer shell, the limiting protrusion abuts against the stop surface.

[0012] According to the push-to-retract refrigerator drawer limiting assembly of the present invention, a plurality of snap-fit ​​blocks are evenly arranged around the outer wall of the centering cylinder, and a snap-fit ​​pressing surface for cooperating with the snap-fit ​​blocks is correspondingly formed on the inner wall of the limiting sleeve.

[0013] According to the push-to-retract refrigerator drawer limiting assembly of the present invention, an anti-detachment structure is formed on the end face of the centering cylinder facing the outer shell, and an anti-detachment stop surface corresponding to the anti-detachment structure is provided on the positioning shaft.

[0014] According to the push-to-retract refrigerator drawer limiting assembly of the present invention, one end of the positioning shaft is screwed with an anti-loosening screw; the portion of the anti-loosening screw head extending beyond the side wall of the positioning shaft forms the anti-loosening stop surface.

[0015] According to the press-and-retractable refrigerator drawer limiting assembly of the present invention, the centering cylinder is composed of a plurality of cylindrical plates evenly arranged around the axis; a snap-fit ​​block is fixed on the outer side of each cylindrical plate; one end of the cylindrical plate is fixedly connected to the pressing column, and the other end has an anti-detachment structure.

[0016] According to the press-and-retractable refrigerator drawer limiting assembly of the present invention, the stop surface of the track block is an inclined surface, and the end of the stop surface forms an anti-rotation protrusion.

[0017] In summary, this invention improves convenience by allowing the push-button to be extended or retracted depending on the actual usage scenario. Furthermore, this invention can be pre-assembled and then installed onto the inner liner, integrating the existing two assembly processes into one, thus optimizing the production process. Attached Figure Description

[0018] Figure 1 This is an exploded three-dimensional structural diagram of the present invention;

[0019] Figure 2 yes Figure 1 A planar sectional view;

[0020] Figure 3 This is a schematic diagram of the assembly and mating relationship of the present invention;

[0021] Figure 4This is a schematic diagram of the outer casing of the present invention;

[0022] Figure 5 This is a schematic diagram of the pressing column of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the limiting sleeve of the present invention;

[0024] Figure 7 This is a schematic diagram of the trajectory tube of the present invention;

[0025] Figure 8 This is a schematic diagram of the extended state of the present invention;

[0026] Figure 9 This is a schematic diagram of the retracted state of the present invention;

[0027] Figure 10 This is a schematic diagram illustrating the application state of the present invention;

[0028] In the diagram: 1-outer shell, 11-reset spring, 12-anti-loosening screw, 13-positioning shaft; 2-track cylinder, 21-track block, 22-first slide groove, 23-second slide groove, 24-anti-rotation protrusion, 25-stop surface; 3-pressing column, 31-centering cylinder, 32-clamping block, 33-anti-loosening structure, 34-driving surface, 35-anti-rotation protrusion; 4-limiting sleeve, 41-limiting protrusion, 411-pushing inclined surface; 42-spring pressure surface, 43-clamping pressure surface; 100-inner liner, 200-limiting component body. Detailed Implementation

[0029] See Figure 1 and Figure 2 This invention provides a press-and-retractable refrigerator drawer limiting component, including a housing 1, one end of which is open and the other end is closed; combined with Figure 3 The outer shell 1 is fixedly sleeved onto the track cylinder 2; see also Figure 4 A positioning shaft 13 is fixed in the outer casing 1, and a reset spring 11 is sleeved on the positioning shaft 13;

[0030] It also includes a pressing column 3, which has a hollow structure and a centering cylinder 31 coaxially connected inside it; a limiting sleeve 4 is movably sleeved between the pressing column 3 and the centering cylinder 31; the centering cylinder 31 is movably sleeved with a positioning shaft 13, and a return spring 11 is sleeved on the outside of the positioning shaft 13; the inner wall of the limiting sleeve 4 has a spring pressure surface 42 for abutting against the return spring 11.

[0031] See Figure 8 and Figure 9 The pressing column 3 has two states: extended and retracted relative to the outer shell 1. The pressing column 3 can switch between the two states when pressed by external force.

[0032] See Figure 7 Multiple track blocks 21 are evenly arranged around the inner wall of the track cylinder 2, and a first groove 22 is formed between two adjacent track blocks 21; a second groove 23 is opened on the track block 21, and a stop surface 25 is formed at the end of the track block 21 facing the outer shell 1.

[0033] See Figure 5 Multiple anti-rotation protrusions 35 are evenly arranged around the outer wall of the pressing column 3, and each anti-rotation protrusion 35 is slidably arranged in the first slide groove 22 or the second slide groove 23 of the corresponding track cylinder 2; the end face of the pressing column 3 facing the outer shell 1 forms a driving surface 34, and the driving surface 34 has a uniform concave-convex undulation structure.

[0034] See Figure 6 The outer wall of the limiting sleeve 4 is uniformly provided with a plurality of limiting protrusions 41, and the limiting protrusions 41 have a pushing inclined surface 411 that contacts and cooperates with the driving surface 34 of the pressing column 3; when the pressing column 3 is extended relative to the outer shell 1, the limiting protrusions 41 are located in the first sliding groove 22; when the pressing column 3 is retracted relative to the outer shell 1, the limiting protrusions 41 abut against the stop surface 25.

[0035] Furthermore, the stop surface 25 of the track block 21 is an inclined surface, and the end of the stop surface 25 forms an anti-rotation protrusion 24; when the pressing column 3 is in the retracted state, the limiting protrusion 41 is blocked by the anti-rotation protrusion 24 to prevent it from sliding into the first slide groove 22, causing the pressing column 3 to pop out on its own.

[0036] When the pressing column 3 is pressed by an external force, the driving surface 34 of the pressing column 3 squeezes and pushes the inclined surface 411 to make the limiting sleeve 4 rotate. The limiting protrusion 41 enters the stop surface 25 from the first sliding groove 22 or enters the first sliding groove 22 from the stop surface 25, realizing the switching between the extended and retracted states.

[0037] Even better, a plurality of snap-fit ​​blocks 32 are evenly arranged around the outer wall of the centering cylinder 31, and a snap-fit ​​pressing surface 43 for cooperating with the snap-fit ​​blocks 32 is correspondingly formed on the inner wall of the limiting sleeve 4; thus limiting the axial displacement of the pressing column 3 and the limiting sleeve 4.

[0038] Furthermore, an anti-detachment structure 33 is formed on the end face of the centering cylinder 31 facing the outer shell 1, and an anti-detachment stop surface that cooperates with the anti-detachment structure 33 is provided on the positioning shaft 13 to prevent the pressing column 3 from detaching from the outer shell 1.

[0039] Even better, one end of the positioning shaft 13 is screwed with an anti-loosening screw 12; the portion of the screw head of the anti-loosening screw 12 that extends beyond the side wall of the positioning shaft 13 forms an anti-loosening stop surface that cooperates with the anti-loosening structure 33.

[0040] As one embodiment, the centering cylinder 31 of the present invention is composed of a plurality of cylindrical plates evenly arranged around an axis; a snap-fit ​​block 32 is fixed on the outer side of each cylindrical plate; one end of the cylindrical plate is fixedly connected to a pressing post 3, and the other end is formed with an anti-detachment structure 33;

[0041] Each cylindrical piece has a certain degree of flexibility, which facilitates its assembly and disassembly with the limiting sleeve 4.

[0042] See Figure 10 The limiting component body 200 of this invention can be pre-assembled and installed on the inner liner 100, at which point the pressing column 3 is in a retracted state, followed by processes such as foaming. After each process is completed, the pressing column 3 is adjusted to an extended state, which can limit the drawer. The assembly process of the limiting component body 200 is optimized, reducing the existing two processes to one. When the user cleans the inner liner 100, the pressing column 3 can be pressed back, making it easy to remove the drawer.

[0043] In summary, this invention provides a press-and-retractable refrigerator drawer limiting component. By allowing the press pin to extend or retract according to the actual usage scenario, convenience is improved. This invention can be pre-assembled and then installed onto the inner liner, integrating the existing two assembly processes into one, thus optimizing the manufacturing process.

[0044] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A press-and-retractable refrigerator drawer limiting component, characterized in that, It includes an outer shell, one end of which is open and the other end is closed; a track cylinder is fixedly sleeved inside the outer shell; a positioning shaft is fixed in the outer shell, and a return spring is sleeved on the positioning shaft; It also includes a pressing column, which has a hollow structure and a centering cylinder that is fixedly sleeved inside it and coaxial with it; a limiting sleeve is movably sleeved between the pressing column and the centering cylinder; the centering cylinder is movably sleeved with a positioning shaft, and a return spring is sleeved on the outside of the positioning shaft; the inner wall of the limiting sleeve has a protruding spring pressure surface for abutting the return spring. The pressing column has two states: extended and retracted relative to the outer shell. The pressing column can switch between the two states when pressed by external force. Multiple track blocks are evenly arranged around the inner wall of the track cylinder, and a first sliding groove is formed between two adjacent track blocks; a second sliding groove is opened on the track block, and a stop surface is formed at the end of the track block facing the outer shell; Multiple anti-rotation protrusions are evenly arranged around the outer wall of the pressing column, and each anti-rotation protrusion is slidably arranged in the first or second groove of the corresponding track cylinder; the end face of the pressing column facing the outer shell forms a driving surface, and the driving surface has a uniform concave-convex undulation structure; Multiple limiting protrusions are evenly arranged around the outer wall of the limiting sleeve. Each limiting protrusion has a pushing inclined surface that contacts and engages with the driving surface of the pressing column. When the pressing column is extended relative to the outer shell, the limiting protrusion is located in the first sliding groove. When the pressing column is retracted relative to the outer shell, the limiting protrusion abuts against the stop surface.

2. The press-and-retractable refrigerator drawer limiting assembly as described in claim 1, characterized in that, Multiple snap-fit ​​blocks are evenly arranged around the outer wall of the centering cylinder, and a snap-fit ​​pressing surface for cooperating with the snap-fit ​​blocks is correspondingly formed on the inner wall of the limiting sleeve.

3. The press-and-retractable refrigerator drawer limiting assembly as described in claim 2, characterized in that, The centering cylinder has an anti-detachment structure on its end face facing the outer shell, and the positioning shaft has an anti-detachment stop surface that cooperates with the anti-detachment structure.

4. The press-and-retractable refrigerator drawer limiting assembly as described in claim 3, characterized in that, One end of the positioning shaft is screwed with an anti-loosening screw; the portion of the screw head extending beyond the side wall of the positioning shaft forms the anti-loosening stop surface.

5. The press-and-retractable refrigerator drawer limiting assembly as described in claim 3, characterized in that, The centering cylinder is composed of multiple cylindrical plates evenly arranged around the axis; a snap-fit ​​block is fixed on the outer surface of each cylindrical plate; one end of the cylindrical plate is fixed to a pressing column, and the other end has an anti-detachment structure.

6. The press-and-retractable refrigerator drawer limiting assembly as described in any one of claims 1 to 5, characterized in that, The stop surface of the track block is an inclined surface, and the end of the stop surface forms an anti-rotation protrusion.

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