Household appliance refrigerator positioning connection pin shaft

Abstract

The utility model relates to the technical field of installation parts, and discloses a household appliance refrigerator positioning connection pin shaft which comprises a pin shaft rod part, one side of the pin shaft rod part is fixedly connected with a pin shaft upper end seat, the other side of the pin shaft rod part is fixedly connected with an extension shaft, a positioning assembly is arranged in the extension shaft, and the pin shaft upper end seat is fixedly connected with the extension shaft. Protection assemblies are arranged on the pin shaft rod part, the pin shaft upper end seat and the side wall of the extension shaft; the positioning assembly comprises a clamping block, a transverse groove is formed in the extension shaft, the side wall of the clamping block is slidably connected into the transverse groove, and the side wall of the clamping block is fixedly connected with a limiting block. When refrigerator parts are connected, the extension shaft is inserted into the hole position, the hole wall extrudes the clamping block to compress the spring, the clamping block is aligned with the clamping groove when the spring reaches the preset position, the spring rebounds to push the fixing rod to enable the clamping block to pop out and be clamped into the clamping groove, positioning connection is achieved, the problems of inaccurate and unstable connection are solved, and connection accuracy and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of installation parts technology, and in particular to a positioning connecting pin for a household appliance refrigerator. Background Technology

[0002] In the field of modern home appliances, refrigerators are frequently used devices, and the stability and precision of the connections between their components are crucial. During daily use, refrigerator doors, drawers, and other components are frequently opened and closed, requiring reliable connecting parts to ensure long-term stable operation. Positioning connecting pins play a key role in improving the overall performance of the refrigerator, extending its lifespan, and ensuring safe use.

[0003] Currently, most refrigerator components are connected using simple bolt connections or ordinary pin connections. Bolt connections primarily use the engagement of nuts and bolts to fix two or more components together; ordinary pin connections rely on pins inserted into pin holes in components, utilizing the interference fit or clearance fit between the pin and the pin hole to achieve the connection. Their technical principle is based on traditional mechanical fastening methods, maintaining the relative position of components through mutual constraint.

[0004] In practical use, due to the vibration of the refrigerator during operation and the frequent opening and closing operations in daily use, the refrigerator components using traditional connection methods are prone to positioning misalignment, making it difficult to ensure accurate positioning. Furthermore, the stability of the connection will gradually decrease, leading to loosening of components and affecting the normal use and lifespan of the refrigerator. To address these issues, a positioning connection pin for household appliances refrigerators is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a positioning and connecting pin for a household appliance refrigerator, aiming to improve the problems of inaccurate positioning and unstable connection when connecting refrigerator components in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A positioning connection pin for a household appliance refrigerator includes a pin shaft portion, an upper pin end seat fixedly connected to one side of the pin shaft portion, an extension shaft fixedly connected to the other side of the pin shaft portion, a positioning component disposed inside the extension shaft, and protective components disposed on the sidewalls of the pin shaft portion, the upper pin end seat, and the extension shaft.

[0008] The positioning component includes a locking block, a transverse groove is provided inside the extension shaft, the side wall of the locking block is slidably connected inside the transverse groove, a limit block is fixedly connected to the side wall of the locking block, a fixing rod is fixedly connected to the side wall of the limit block, a sleeve is provided inside the extension shaft, and a spring is provided inside the sleeve.

[0009] As a further description of the above technical solution:

[0010] The protective component includes a ceramic coating, the ceramic coating sidewalls being disposed on the pin shaft portion, the upper end seat of the pin shaft, and the sidewall of the extension shaft.

[0011] As a further description of the above technical solution:

[0012] The ceramic coating sidewall is provided with a polytetrafluoroethylene coating, and the pin shaft sidewall is slidably connected with a rubber washer.

[0013] As a further description of the above technical solution:

[0014] The ceramic coating is made of ceramic material and is used to improve the wear resistance and corrosion resistance of pin-related components.

[0015] As a further description of the above technical solution:

[0016] The polytetrafluoroethylene coating is used to reduce the coefficient of friction on the surface of the component, and the rubber gasket is used to provide sealing and cushioning.

[0017] As a further description of the above technical solution:

[0018] The sidewall of the limiting block is slidably connected inside the transverse groove, and the sidewall of the sleeve is fixedly connected inside the transverse groove.

[0019] As a further description of the above technical solution:

[0020] The side wall of the fixed rod is slidably connected inside the sleeve.

[0021] As a further description of the above technical solution:

[0022] One end of the spring is fixedly connected to the side wall of the fixed rod, and the other end of the spring is fixedly connected to the inside of the sleeve.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when connecting refrigerator components, the extension shaft is inserted into the hole, and the hole wall squeezes the locking block to move and compress the spring. When it reaches the predetermined position, the locking block aligns with the slot, and the spring rebounds to push the fixing rod, causing the locking block to pop out and lock into the slot, thus achieving a positioning connection. This solves the problems of inaccurate positioning and unstable connection when connecting refrigerator components. The above technical solution improves the accuracy and stability of refrigerator component connection.

[0025] 2. In this utility model, the ceramic coating, with its high hardness and chemical stability, resists friction, collision, and acid and alkali corrosion, thus improving wear resistance and corrosion resistance. The polytetrafluoroethylene coating, with its low coefficient of friction, reduces frictional resistance between components. The rubber gasket fills the gaps, blocking impurities and providing a sealing effect. It also relies on elasticity to buffer vibration and impact, solving the problems of wear, corrosion, and loosening of the refrigerator pin shaft caused by external friction, collision, acid and alkali corrosion, impurity entry, and vibration impact during operation. Through the above technical solutions, the wear resistance and corrosion resistance of the pin shaft, the smoothness of movement between components, and the sealing and stability of the connection parts are improved. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a positioning connecting pin for a household appliance refrigerator according to the present invention.

[0027] Figure 2 This is a schematic diagram of the internal structure of the extension shaft of a positioning and connecting pin for a household appliance refrigerator, as proposed in this utility model.

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the internal structure of a positioning and connecting pin for a household appliance refrigerator, as proposed in this utility model.

[0030] Legend:

[0031] 1. Pin shaft; 2. Pin shaft upper end seat; 3. Extension shaft; 4. Horizontal groove; 5. Clamping block; 6. Limiting block; 7. Fixing rod; 8. Sleeve; 9. Spring; 10. Polytetrafluoroethylene coating; 11. Ceramic coating; 12. Rubber washer. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3This utility model provides an embodiment of a positioning connecting pin for a household appliance refrigerator, comprising a pin rod portion 1, a pin upper end seat 2 fixedly connected to one side of the pin rod portion 1, and an extension shaft 3 fixedly connected to the other side of the pin rod portion 1. A positioning component is provided inside the extension shaft 3, and protective components are provided on the side walls of the pin rod portion 1, the pin upper end seat 2, and the extension shaft 3. The positioning component includes a locking block 5. A transverse groove 4 is formed inside the extension shaft 3, providing sliding space for the locking block 5, allowing it to extend and retract within the transverse groove 4 to connect or separate from the refrigerator component slot, thus achieving a positioning and guiding effect. The side wall of the locking block 5 is slidably connected inside the transverse groove 4. A limiting block 6 is fixedly connected to the extension shaft 3. A fixed rod 7 is fixedly connected to the side wall of the limiting block 6. A sleeve 8 is provided inside the extension shaft 3. A spring 9 is provided inside the sleeve 8. The side wall of the limiting block 6 is slidably connected to the inside of the transverse groove 4. The side wall of the sleeve 8 is fixedly connected to the inside of the transverse groove 4. The side wall of the fixed rod 7 is slidably connected to the inside of the sleeve 8. One end of the spring 9 is fixedly connected to the side wall of the fixed rod 7. The other end of the spring 9 is fixedly connected to the inside of the sleeve 8. The locking block 5 cooperates with the spring 9. When the extension shaft 3 is inserted into the corresponding hole of the refrigerator component, the inner wall of the component squeezes the locking block 5, causing it to slide into the transverse groove 4 and compress the spring 9. After reaching the predetermined position, the spring 9 releases its elastic force to push the locking block 5 out and lock it into the component slot, thus achieving the effect of positioning and connection.

[0034] Reference Figure 1 and Figure 4 The protective components include a ceramic coating 11, with sidewalls of the ceramic coating 11 disposed on the sidewalls of the pin shaft 1, the upper end seat 2 of the pin, and the extension shaft 3. A polytetrafluoroethylene (PTFE) coating 10 is disposed on the sidewalls of the ceramic coating 11. The ceramic coating 11 and the PTFE coating 10 work together. The ceramic coating 11, with its high hardness and chemical stability, enhances wear resistance and corrosion resistance, while the PTFE coating 10, with its low coefficient of friction, reduces surface resistance. The combination of these two components extends the service life of the pin and ensures smooth movement between parts. A rubber washer 12 is slidably connected to the sidewall of the pin shaft 1, engaging with the pin shaft 1. During component connection, the rubber washer 12 fills the gap, achieving a sealing protection. Simultaneously, its elasticity buffers collisions and vibrations between components, reducing wear and improving connection stability. The ceramic coating 11, made of ceramic material, improves the wear resistance and corrosion resistance of the pin-related components. The PTFE coating 10 reduces the coefficient of friction on the component surface, and the rubber washer 12 provides sealing and buffering.

[0035] Working principle: When using this pin to connect refrigerator parts, the extension shaft 3 is inserted into the corresponding hole. During the insertion process, the inner wall of the hole squeezes the locking block 5, causing it to slide into the horizontal groove 4, thereby compressing the spring 9. When the extension shaft 3 reaches the predetermined connection position, the locking block 5 is aligned with the slot at the hole. At this time, the spring 9 returns to its deformation, and the rebound force pushes the fixing rod 7, causing the limiting block 6 and the locking block 5 to slide out of the horizontal groove 4. The locking block 5 pops out and locks into the slot, realizing the positioning and connection of the pin and the refrigerator parts. When disassembling, an external force is applied to push the locking block 5, compressing the spring 9 to retract it into the horizontal groove 4, and the parts can be separated.

[0036] During refrigerator operation, the pin is continuously subjected to external factors. The ceramic coating 11, with its high hardness and chemical stability, resists friction, collision, and corrosion from acidic and alkaline substances inside the refrigerator, enhancing the wear resistance and corrosion resistance of the pin components. The polytetrafluoroethylene coating 10, with its extremely low coefficient of friction, reduces the frictional resistance between the pin and other components, making the movement between components smoother. At the same time, the rubber gasket 12 fills the tiny gaps between the pin shaft 1 and other components when they are connected, preventing dust, moisture, and other impurities from entering and achieving a sealing effect. It also uses its own elasticity to buffer the vibration of the refrigerator during operation and the impact force of collisions when components are opened and closed, reducing component wear and improving the stability of the connection.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning connecting pin shaft for a household appliance refrigerator, comprising a pin shaft stem (1), characterized in that: The upper end seat (2) of the pin shaft rod (1) is fixedly connected to one side, and the extension shaft (3) is fixedly connected to the other side of the pin shaft rod (1). The extension shaft (3) is provided with a positioning component inside, and the side walls of the pin shaft rod (1), the upper end seat (2) of the pin shaft and the extension shaft (3) are provided with protective components. The positioning component includes a locking block (5), a transverse groove (4) is provided inside the extension shaft (3), the side wall of the locking block (5) is slidably connected inside the transverse groove (4), a limiting block (6) is fixedly connected to the side wall of the locking block (5), a fixing rod (7) is fixedly connected to the side wall of the limiting block (6), a sleeve (8) is provided inside the extension shaft (3), and a spring (9) is provided inside the sleeve (8).

2. A refrigerator positioning connecting pin shaft of a household appliance according to claim 1, characterized in that: The protective component includes a ceramic coating (11), the sidewalls of which are disposed on the sidewalls of the pin shaft portion (1), the upper end seat of the pin shaft (2), and the extension shaft (3).

3. A refrigerator positioning connecting pin shaft of a household appliance according to claim 2, characterized in that: The ceramic coating (11) has a polytetrafluoroethylene coating (10) on its sidewall, and a rubber washer (12) is slidably connected to the sidewall of the pin shaft (1).

4. A refrigerator positioning connecting pin shaft of a household appliance according to claim 3, characterized in that: The ceramic coating (11) is made of ceramic material and is used to improve the wear resistance and corrosion resistance of pin-related components.

5. A refrigerator positioning connecting pin shaft of a household appliance according to claim 4, characterized in that: The polytetrafluoroethylene coating (10) is used to reduce the coefficient of friction on the surface of the component, and the rubber gasket (12) is used to seal and buffer.

6. A refrigerator positioning connecting pin shaft of a household appliance according to claim 1, characterized in that: The side wall of the limiting block (6) is slidably connected inside the transverse groove (4), and the side wall of the sleeve (8) is fixedly connected inside the transverse groove (4).

7. A refrigerator positioning connecting pin shaft of a household appliance according to claim 1, characterized in that: The side wall of the fixing rod (7) is slidably connected inside the sleeve (8).

8. A positioning connecting pin for a household appliance refrigerator according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the side wall of the fixed rod (7), and the other end of the spring (9) is fixedly connected to the inside of the sleeve (8).

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