A sealed refrigerator door switch

Abstract

The present invention discloses a sealed refrigerator door switch, comprising a base and a rubber cover, wherein the base is provided with an outer cavity and an inner cavity, a through hole is provided between the outer cavity and the inner cavity, a sealing assembly and sealing oil are provided at the through hole, the outer cavity and the inner cavity of the base are sealed by the sealing assembly and the sealing oil, the rubber cover is sealedly connected to the base and covers the inner cavity, the outer cavity is provided with a pressing assembly, the inner cavity is provided with a terminal assembly, and the two are connected to each other via a rotating shaft passing through the through hole, one end of the terminal assembly passes through the rubber cover and is provided outside the rubber cover, and a seal is formed between the terminal assembly and the rubber cover. The sealing assembly and sealing oil are provided at the through hole, and the base is sealedly connected to the rubber cover, and the terminal assembly and the rubber cover are also sealed, so that the refrigerator door switch is waterproof and explosion-proof. The sealing method can also adopt other sealing methods to protect the terminal assembly in the inner cavity, so as to achieve the IP67 sealing function of the switch, thereby increasing the service life of the travel switch and improving safety performance.

Description

Technical Field

[0001] The invention relates to a switch device for switching a circuit on and off, and in particular to a sealed refrigerator door switch. Background Art

[0002] A switch that switches circuits is professionally known as a travel switch or position switch (also called a limit switch). It is a commonly used low-current master control device. It utilizes the collision of mechanical moving parts to activate its contacts, connecting or disconnecting the control circuit to achieve a specific control objective. Typically, this type of switch is used to limit the position or travel of a moving machine, enabling it to automatically stop, reverse, change speed, or automatically reciprocate at a specific position or travel.

[0003] Existing refrigerators are all equipped with a travel switch. When the refrigerator door is opened, the light source inside the refrigerator is turned on for lighting. When the refrigerator door is closed, the light source inside the refrigerator is turned off. Because the cold air in the refrigerator will form water accumulation, and the existing refrigerator travel switches are not designed to be sealed, the cold air in the refrigerator can easily enter the interior of the travel switch, causing water accumulation inside and damaging the travel switch. In more serious cases, it will cause damage to the refrigerator and pose a safety hazard. Therefore, it is very necessary to design a sealed travel switch in the refrigerator. Summary of the Invention

[0004] The object of the present invention is to provide a sealed refrigerator door switch which can effectively seal and improve service life and safety performance.

[0005] To solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A sealed refrigerator door switch includes a base and a rubber cover. The base is provided with an outer cavity and an inner cavity. A through hole is provided between the outer cavity and the inner cavity. A sealing assembly and sealing oil are provided at the through hole. The outer cavity and the inner cavity of the base are sealed by the sealing assembly and the sealing oil. The rubber cover is sealed with the base and covers the inner cavity. The outer cavity is provided with a pressing assembly, and the inner cavity is provided with a terminal assembly. The two are connected to each other via a rotating shaft passing through the through hole. One end of the terminal assembly passes through the rubber cover and is provided outside the rubber cover. The terminal assembly and the rubber cover are sealed.

[0007] Furthermore, the pressing assembly includes a button and a torsion spring, the torsion spring arm on the torsion spring is against the lower end of the button, the terminal assembly includes a static terminal assembly and a movable plate assembly, one end of the rotating shaft is connected to the button, and the other end is connected to the movable plate assembly for a toggle.

[0008] Furthermore, the sealing assembly includes a sealing box and a first sealing ring. The sealing box is arranged in the outer cavity, the sealing oil is filled in the sealing box, one end of the rotating shaft passes through the sealing box and is connected to the pressing assembly, and the first sealing ring is sleeved on the rotating shaft and arranged in the sealing box.

[0009] Furthermore, the sealing assembly includes a first groove and a second sealing ring, the first groove is arranged in the inner cavity and on the outside of the through hole, the rotating shaft is arranged at one end of the inner cavity and is provided with a snap block that cooperates with the first groove, and a second groove is formed between the snap block and the rotating shaft, the sealing oil is filled in the first groove and / or the second groove, and the second sealing ring is arranged in the first groove and / or the second groove.

[0010] Furthermore, a first glue adding groove is provided at the connection between the base and the glue cover, and a first sealant is added into the first glue adding groove.

[0011] Furthermore, a sealing groove is provided on the base and is arranged outside the inner cavity. A sealing gasket is provided in the sealing groove, and the base and the rubber cover are sealed by the sealing gasket.

[0012] Furthermore, a welding groove is provided on the base, and a welding rib is provided on the rubber cover, and the welding groove and the welding rib are welded and sealed by ultrasound or laser.

[0013] Furthermore, the rubber cover is provided with a second rubber adding groove, which is provided around the location where the terminal assembly passes through the rubber cover, and a second sealant is added in the second rubber adding groove.

[0014] Furthermore, the terminal assembly and the rubber cover are sealed by integral plastic wrapping.

[0015] Furthermore, the terminal assembly and the rubber cover, and the connection between the rubber cover and the base are sealed by plastic wrapping.

[0016] The beneficial effects of the present invention are as follows: the sealed refrigerator door switch of the present invention respectively arranges an outer cavity and an inner cavity on the base, and at the same time arranges a sealing component and sealing oil between the outer cavity and the inner cavity for sealing, and the base and the rubber cover are also sealed, and the terminal component and the rubber cover are also sealed; the outer cavity and the inner cavity are sealed by the sealing component and the sealing oil, the base and the rubber cover are sealed, and the terminal component and the rubber cover are sealed, the switch is waterproof and explosion-proof, and the terminal component in the inner cavity is protected, thereby prolonging the service life of the travel switch and improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the sealed refrigerator door switch structure of the present invention;

[0018] Figure 2 This is an exploded schematic diagram of the sealed refrigerator door switch of the present invention;

[0019] Figure 3 This is a structural schematic diagram of the sealed refrigerator door switch base of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a sealing assembly of a sealed refrigerator door switch embodiment 1 of the present invention;

[0021] Figure 5 This is a cross-sectional view of a sealing assembly of a sealed refrigerator door switch embodiment 1 of the present invention;

[0022] Figure 6 This is a schematic structural diagram of a sealing assembly of a second embodiment of a sealed refrigerator door switch according to the present invention;

[0023] Figure 7 This is a cross-sectional view of the sealing assembly of the second embodiment of the sealed refrigerator door switch of the present invention;

[0024] Figure 8 This is a schematic diagram of the rotating shaft structure in the second embodiment of the sealed refrigerator door switch of the present invention;

[0025] Figure 9 Schematic diagram of the sealed connection between the base and the rubber cover in the third and fourth embodiments of the sealed refrigerator door switch of the present invention;

[0026] Figure 10 This is a schematic diagram of the sealed connection between the base and the rubber cover in the fourth embodiment of the sealed refrigerator door switch of the present invention;

[0027] Figure 11 This is a schematic diagram of the sealed connection between the base and the rubber cover in the fifth embodiment of the sealed refrigerator door switch of the present invention;

[0028] Figure 12 This is a schematic diagram of the sealed connection between the terminal assembly and the rubber cover in the seventh embodiment of the sealed refrigerator door switch of the present invention;

[0029] Figure 13 Schematic diagram of the sealed connection between the terminal assembly and the rubber cover, and between the rubber cover and the base in the eighth embodiment of the sealed refrigerator door switch of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the product of the present invention is further described in detail below with reference to the embodiments and drawings.

[0031] Example 1:

[0032] like Figures 1 to 5As shown, a sealed refrigerator door switch includes a base 1 and a rubber cover 2, the base 1 is provided with an outer cavity 3 and an inner cavity 4, a through hole 5 is provided between the outer cavity 3 and the inner cavity 4, a sealing component 6 and a sealing oil 7 are provided at the through hole 5, and the outer cavity 3 and the inner cavity 4 of the base 1 are sealed by the sealing component 6 and the sealing oil 7, the rubber cover 2 is sealed and connected to the base 1, and covers the inner cavity 4, the outer cavity 3 is provided with a pressing component 8, the inner cavity 4 is provided with a terminal component 9, and is connected to each other through a rotating shaft 10 passing through the through hole 5, one end of the terminal component 9 passes through the rubber cover 2 and is provided outside the rubber cover 2, and the terminal component 9 is connected to the rubber cover 2. Sealing, the pressing assembly 8 includes a button 81 and a torsion spring 82, the torsion spring arm 83 on the torsion spring 82 is against the lower end of the button 81, the terminal assembly 9 includes a static terminal assembly 91 and a movable plate assembly 92, one end of the rotating shaft 10 is connected to the button 81, and the other end is connected to the movable plate assembly 92 for toggling, the sealing assembly 6 includes a sealing box 61 and a first sealing ring 62, the sealing box 61 is arranged in the outer cavity 3, the sealing oil 7 is filled in the sealing box 61, one end of the rotating shaft 10 passes through the sealing box 61 and is connected to the pressing assembly 8, the first sealing ring 62 is sleeved on the rotating shaft 10 and arranged in the sealing box 61.

[0033] In this embodiment, a sealing box 61 and a first sealing ring 62 are used to seal the outer cavity 3 and the inner cavity 4. The sealing box 61 is arranged in the outer cavity 3, and the sealing oil 7 is filled in the sealing box 61. The first sealing ring 62 is sleeved on the rotating shaft 10. The gap between the rotating shaft 10 and the through hole 5 is sealed by the first sealing ring 62 and the sealing oil 7, so as to protect the terminal assembly 9 of the inner cavity 4. When sealing, the rotation of the rotating shaft 10 is not affected, so that the refrigerator door switch can operate normally, thereby performing waterproof, dustproof and explosion-proof sealing treatments on the inner cavity 4, thereby improving the service life and safety performance of the refrigerator door switch.

[0034] Example 2:

[0035] like Figures 6 to 8 As shown, the sealing assembly 6 includes a first groove 63 and a second sealing ring 64. The first groove 63 is arranged in the inner cavity 4 and on the outside of the through hole 5. The rotating shaft 10 is arranged at one end of the inner cavity 4 and is provided with a snap block 11 that cooperates with the first groove 63. A second groove 12 is formed between the snap block 11 and the rotating shaft 10. The sealing oil 7 is filled in the first groove 63 and the second groove 12. The second sealing ring 64 is arranged in the first groove 63 and / or the second groove 12.

[0036] In this embodiment, in order to seal between the outer cavity 3 and the inner cavity 4, a first groove 63 can be provided in the inner cavity 4, and the first groove 63 is provided on the outside of the through hole 5. At the same time, a snap block 11 cooperating with the first groove 63 is provided on the rotating shaft 10, and the snap block 11 is in an "L" shape, so that a second groove 12 is formed between the snap block 11 and the rotating shaft 10, and the sealing oil 7 is filled in the first groove 63 and / or the second groove 12, and the second sealing ring 64 is provided in the first groove 63 and / or the second groove 12. The outer cavity 3 and the inner cavity 4 are sealed by the sealing oil 7 and the second sealing ring 64. At the same time, the sealing oil 7 does not affect the rotation of the rotating shaft 10, and the terminal assembly 9 of the inner cavity 4 is protected, thereby improving the service life and safety performance of the refrigerator door switch.

[0037] Example 3:

[0038] like Figure 9 As shown, a first glue adding groove 13 is provided at the connection between the base 1 and the glue cover 2 , and a first sealant 14 is added into the first glue adding groove 13 .

[0039] By adopting any one of the above embodiments, the base 1 and the rubber cover 2 are sealed. A first glue adding groove 13 can be set at the connection between the base 1 and the rubber cover 2, and a first sealant 14 is added to the first glue adding groove 13. The connection between the base 1 and the rubber cover 2 is sealed by the first sealant 14, thereby finally improving the sealing performance of the inner cavity 4.

[0040] Example 4:

[0041] like Figure 10 As shown, a sealing groove 15 is provided on the base 1 and is arranged outside the inner cavity 4. A sealing gasket 16 is provided in the sealing groove 15, and the base 1 and the rubber cover 2 are sealed by the sealing gasket 16.

[0042] By adopting any of the above embodiments, when sealing the base 1 and the rubber cover 2, a sealing groove 15 can be further provided on the base 1, and a sealing gasket 16 can be provided in the sealing groove 15. When the base 1 and the rubber cover 2 are connected, they are sealed by the sealing gasket 16, thereby ultimately improving the sealing performance of the inner cavity 4.

[0043] Embodiment 5:

[0044] like Figure 11 As shown, the base 1 is provided with a welding groove 17, and the rubber cover 2 is provided with a welding rib 18. The welding groove 17 and the welding rib 18 are welded and sealed by ultrasound or laser.

[0045] By adopting any of the above embodiments, a welding groove 17 is provided on the base 1 and a welding rib 18 is provided on the rubber cover 2. The welding groove 17 and the welding rib 18 are welded by ultrasonic or laser so that the rubber cover 2 and the base 1 are sealed, thereby improving the sealing of the inner cavity 4.

[0046] Example 6:

[0047] like Figure 9 As shown, the rubber cover 2 is provided with a second rubber adding groove 19 , which is provided around the place where the terminal assembly 9 passes through the rubber cover 2 , and a second sealant 20 is added in the second rubber adding groove 19 .

[0048] By adopting any of the above embodiments, when sealing between the terminal assembly 9 and the rubber cover 2, a second glue adding groove 19 can be provided on the rubber cover 2, and a second sealant 20 can be added to the second glue adding groove 19 at the same time. The terminal assembly 9 and the rubber cover 2 are sealed by the second sealant 20, thereby ultimately improving the sealing performance of the inner cavity 4.

[0049] Embodiment seven:

[0050] like Figure 11 As shown, the terminal assembly 9 and the rubber cover 2 are sealed by integral plastic wrapping.

[0051] By adopting any of the above embodiments, when sealing between the terminal assembly 9 and the rubber cover 2, a method of overall plastic wrapping (rubber wrapping) can be adopted between the terminal assembly 9 and the rubber cover 2, and rubber wrapping is performed where the terminal assembly 9 passes through the rubber cover 2, thereby ultimately improving the sealing of the inner cavity 4.

[0052] Embodiment 8:

[0053] like Figure 12 As shown, the terminal assembly 9 and the rubber cover 2, and the connection between the rubber cover 2 and the base 1 are sealed by plastic coating.

[0054] By adopting any of the above embodiments, soft glue 21 can be simultaneously overmolded at the connection between the rubber cover 2 and the base 1, and at the terminal assembly 9 and the rubber cover 2. The overmolding can seal the rubber cover 2 and the base 1, and the terminal assembly 9 and the rubber cover, thereby ultimately improving the sealing of the inner cavity 4.

[0055] When sealing the refrigerator door switch, the above embodiments can be used in any combination, and the sealing method for the refrigerator door switch is not limited to the above-mentioned sealing method, and other sealing methods can also be used.

[0056] The above illustrates and describes the basic principles, main features, and advantages of the present invention. Any equivalent variations, modifications, and developments of the above-disclosed technical contents made by persons skilled in the art without departing from the scope of the present invention are considered equivalent embodiments of the present invention. Furthermore, any equivalent variations, modifications, and developments of the above-disclosed technical contents based on the essential technology of the present invention remain within the scope of protection of the present invention.

Claims

1. A sealed refrigerator door switch, comprising a base and a rubber cover, characterized in that: The base is provided with an outer cavity and an inner cavity, a through hole is provided between the outer cavity and the inner cavity, a sealing assembly and sealing oil are provided at the through hole, and the outer cavity and the inner cavity of the base are sealed by the sealing assembly and the sealing oil, the rubber cover is sealed with the base and covers the inner cavity, the outer cavity is provided with a pressing assembly, the inner cavity is provided with a terminal assembly, and they are connected to each other by a rotating shaft passing through the through hole, one end of the terminal assembly passes through the rubber cover and is provided outside the rubber cover, and the terminal assembly and the rubber cover are sealed; The pressing assembly includes a button and a torsion spring, wherein the torsion spring arm of the torsion spring abuts against one side of the lower end of the button, the terminal assembly includes a static terminal assembly and a movable plate assembly, one end of the rotating shaft is connected to the button, and the other end is connected to the movable plate assembly for toggling; The sealing assembly includes a sealing box and a first sealing ring. The sealing box is arranged in the outer cavity. The sealing oil is filled in the sealing box. One end of the rotating shaft passes through the sealing box and is connected to the pressing assembly. The first sealing ring is sleeved on the rotating shaft and arranged in the sealing box. A first glue adding groove is provided at the connection between the base and the glue cover, and a first sealant is added into the first glue adding groove; The rubber cover is provided with a second rubber adding groove, which is arranged around the position where the terminal assembly passes through the rubber cover, and the second rubber adding groove is filled with a second sealant.

2. A sealed refrigerator door switch according to claim 1, characterized in that: The sealing assembly includes a first groove and a second sealing ring. The first groove is arranged in the inner cavity and on the outside of the through hole. The rotating shaft is arranged at one end of the inner cavity and is provided with a snap block that cooperates with the first groove. A second groove is formed between the snap block and the rotating shaft. The sealing oil is filled in the first groove and / or the second groove, and the second sealing ring is arranged in the first groove and / or the second groove.

3. The sealed refrigerator door switch according to claim 1, characterized in that: A sealing groove is provided on the base and is arranged outside the inner cavity. A sealing gasket is provided in the sealing groove, and the base and the rubber cover are sealed by the sealing gasket.

4. The sealed refrigerator door switch according to claim 1, characterized in that: The base is provided with a welding groove, and the rubber cover is provided with a welding rib. The welding groove and the welding rib are welded and sealed by ultrasonic wave or laser.

5. The sealed refrigerator door switch according to claim 1, characterized in that: The terminal assembly and the rubber cover are sealed by integral plastic wrapping.

6. The sealed refrigerator door switch according to claim 1, characterized in that: Plastic wrap is used to seal the connection between the terminal assembly and the rubber cover, and between the rubber cover and the base.

Images