WO2021103030A1

WO2021103030A1 - Sealing type refrigerator door switch

Info

Publication number: WO2021103030A1
Application number: PCT/CN2019/122281
Authority: WO
Inventors: 刘二军
Original assignee: 惠州冠泰电子有限公司
Priority date: 2019-11-21
Filing date: 2019-11-30
Publication date: 2021-06-03
Also published as: CN112825291A

Abstract

Disclosed is a sealing type 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 arranged at the through hole; the outer cavity and the inner cavity of the base are sealed by means of the sealing assembly and the sealing oil; the rubber cover is in sealed connection 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 the pressing assembly and the terminal assembly are mutually connected to each other by means of a rotating shaft penetrating through the through hole; and one end of the terminal assembly passes through the rubber cover and is arranged outside the rubber cover, and the terminal assembly and the rubber cover are sealed. The sealing assembly and the sealing oil are arranged at the through hole, and the base and the rubber cover are connected in a sealed manner, and the terminal assembly and the rubber cover are also sealed as well, such that the refrigerator door switch is waterproof and prevents explosions; in addition, other methods for sealing the refrigerator door switch can be used for protecting the terminal assembly in the inner cavity so as to achieve the function of sealing the switch IP67 , thereby prolonging the service life of the travel switch and improving the safety performance thereof.

Description

A sealed refrigerator door switch

Technical field

The invention relates to a switch device for making and breaking a circuit, in particular to a sealed refrigerator door switch.

Background technique

The professional name of the switching device of the on-off circuit is a travel switch or a position switch (also known as a limit switch), which is a commonly used low-current master electrical appliance. The collision of the moving parts of the production machinery is used to make the contacts actuate to switch on or off the control circuit to achieve certain control purposes. Usually, this type of switch is used to limit the position or stroke of the mechanical movement, so that the moving machine automatically stops, moves in the opposite direction, moves at a variable speed or moves back and forth automatically according to a certain position or stroke.

Existing refrigerators are equipped with a travel switch. When the refrigerator door is opened, the light source inside the refrigerator is turned on for easy lighting. When the refrigerator door is closed, the light source inside the refrigerator is turned off; the cold air in the refrigerator will cause water accumulation. However, the existing refrigerator limit switches are not designed to be sealed, so the cold air in the refrigerator easily enters the limit switch, causing water to accumulate inside, damaging the limit switch, and even more serious damage to the refrigerator, causing safety hazards. Therefore, , It is necessary to seal the limit switch in the refrigerator.

Summary of the invention

The purpose of the present invention is to provide a sealed refrigerator door switch that can effectively seal and improve the service life and safety performance.

In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

A sealed refrigerator door switch, comprising 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, and a sealing component is provided at the through hole And sealing oil, the outer cavity of the base and the inner cavity are sealed through the sealing component and the sealing oil. The rubber cover is connected to the base in a sealed manner and covers the inner cavity. The outer cavity is provided with a pressing component, and the inner The cavity is provided with a terminal assembly, and is connected to each other through a through-hole through a rotating shaft, one end of the terminal assembly passes through the rubber cover and is arranged outside the rubber cover, and the terminal assembly and the rubber cover are sealed.

Further, the pressing assembly includes a button and a torsion spring, the torsion spring arm on the torsion spring abuts against the lower end of the button, the terminal assembly includes a static terminal assembly and a moving plate assembly, and one end of the rotating shaft is connected to the button , The other end is connected with the moving piece assembly.

Further, 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, and one end of the rotating shaft passes through the sealing box and is connected to the pressing assembly. A sealing ring is sleeved on the rotating shaft and arranged in the sealed box.

Further, the sealing assembly includes a first groove and a second sealing ring, the first groove is provided in the inner cavity and is provided outside the through hole, and the rotating shaft is provided on one end of the inner cavity with a second sealing ring. An engaging block with a groove, a second groove is formed between the engaging block and the rotating shaft, the first groove and/or the second groove are filled with the sealing oil, and the second sealing ring is provided In the first groove and/or the second groove.

Further, the connection between the base and the rubber cover is provided with a first glue adding groove, and a first sealant is added in the first glue adding groove.

Further, a sealing groove is provided on the base and arranged outside the inner cavity, and a sealing gasket is provided in the sealing groove, and the base and the rubber cover are sealed by the sealing gasket.

Further, 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 ultrasonic or laser.

Further, the glue cover is provided with a second glue adding groove, the second glue adding groove is provided at the periphery of the terminal assembly passing through the glue cover, and a second sealant is added in the second glue groove.

Further, the terminal assembly and the rubber cover are sealed by an integral overmolding.

Further, between the terminal assembly and the rubber cover, and the connection between the rubber cover and the base are sealed by overmolding.

The beneficial effects of the present invention are: the sealed refrigerator door switch of the present invention has an outer cavity and an inner cavity respectively arranged on the base, and at the same time, a sealing component and a sealing oil are arranged between the outer cavity and the inner cavity for sealing, and the base and the rubber cover The sealing connection between the terminal assembly and the rubber cover is also carried out; the outer cavity and the inner cavity are sealed through the sealing assembly and the sealing oil, the base and the rubber cover are sealed, and the terminal assembly and the rubber cover are sealed to each other. The switch is subjected to waterproof and explosion-proof treatment to protect the terminal assembly in the inner cavity, thereby increasing the service life of the travel switch and improving the safety performance.

Description of the drawings

Figure 1 is a schematic diagram of the structure of a sealed refrigerator door switch according to the present invention;

Fig. 2 is an exploded schematic diagram of a sealed refrigerator door switch of the present invention;

Figure 3 is a schematic diagram of the structure of the switch base of the sealed refrigerator door of the present invention;

4 is a schematic diagram of the structure of the sealing assembly of the first embodiment of the sealed refrigerator door switch of the present invention;

5 is a cross-sectional view of the sealing component of the first embodiment of the sealed refrigerator door switch of the present invention;

6 is a schematic diagram of the structure of the sealing component of the second embodiment of the sealed refrigerator door switch of the present invention;

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

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

9 is a schematic diagram of the sealed connection between the base and the rubber cover in Embodiment 3 and Embodiment 4 of the sealed refrigerator door switch of the present invention;

10 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;

11 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;

12 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;

13 is a 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 ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the product of the present invention will be further described in detail below in conjunction with embodiments and drawings.

Example one:

As shown in Figures 1 to 5, 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, the outer cavity 3 and the inner cavity 4 A through hole 5 is provided between the through hole 5, a sealing component 6 and a sealing oil 7 are arranged 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 hermetically connected to the base 1 and covers the inner cavity 4, the outer cavity 3 is provided with a pressing assembly 8, the inner cavity 4 is provided with a terminal assembly 9 and is connected to each other through the through-hole 5 of the rotating shaft 10, One end of the terminal assembly 9 passes through the rubber cover 2 and is disposed outside the rubber cover 2. The terminal assembly 9 and the rubber cover 2 are sealed, and the pressing assembly 8 includes a button 81 and a torsion spring 82. The torsion spring The torsion spring arm 83 on the 82 abuts against the lower end of the button 81. The terminal assembly 9 includes a static terminal assembly 91 and a moving plate assembly 92. One end of the rotating shaft 10 is connected to the button 81, and the other end is connected to the moving plate assembly 92. Toggle connection, 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, and one end of the rotating shaft 10 passes through the sealing The box 61 is connected with the pressing assembly 8, and the first sealing ring 62 is sleeved on the rotating shaft 10 and arranged in the sealed box 61.

In this embodiment, the outer cavity 3 and the inner cavity 4 are sealed, a sealed box 61 and a first sealing ring 62 are used for sealing, the sealed box 61 is arranged in the outer cavity 3, and the sealed box 61 is filled with sealing oil 7. The first sealing ring 62 is sleeved on the rotating shaft 10, and the gap between the rotating shaft 10 and the through hole 5 is sealed through the first sealing ring 62 and the sealing oil 7, which is convenient to protect the terminal assembly 9 of the inner cavity 4, and When the sealing is performed, the rotation of the rotating shaft 10 is not affected, and the refrigerator door switch can operate normally, so that the inner cavity 4 is sealed with waterproof, dust-proof, and explosion-proof, and the service life and safety performance of the refrigerator door switch are improved.

Embodiment two:

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

In this embodiment, to seal between the outer cavity 3 and the inner cavity 4, a first groove 63 may be provided in the inner cavity 4, and the first groove 63 is arranged outside the through hole 5, and at the same time, the first groove 63 is arranged on the shaft 10 There is an engaging block 11 matching the first groove 63, and the engaging block 11 is in an "L" shape, so that a second groove 12 is formed between the engaging 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 arranged in the first groove 63 and/or the second groove 12, through the sealing oil 7 and the second sealing ring 64 to the outer cavity 3 and the inner cavity 4 are sealed, and at the same time, the rotation of the shaft 10 is not affected by the sealing oil 7, 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.

Embodiment three:

As shown in FIG. 9, the connection between the base 1 and the rubber cover 2 is provided with a first gluing groove 13, and a first sealant 14 is added to the first gluing groove 13.

Using any one of the above embodiments, the base 1 and the rubber cover 2 can be sealed by setting a first gluing groove 13 at the junction of the base 1 and the rubber cover 2, and in the first gluing groove 13 The first sealant 14 is added, and the connection between the base 1 and the rubber cover 2 is sealed by the first sealant 14, and finally the sealing performance of the inner cavity 4 is improved.

Embodiment four:

As shown in Figure 10, the base 1 is provided with a sealing groove 15 and is arranged outside the inner cavity 4, and a sealing gasket 16 is provided in the sealing groove 15 to connect the base 1 and the rubber cover 2 through the sealing gasket 16. Seal it.

Using any one of the above embodiments, when the base 1 and the rubber cover 2 are sealed, a sealing groove 15 can be provided on the base 1, and a sealing gasket 16 can be provided in the sealing groove 15 through the sealing gasket 16 When the base 1 and the rubber cover 2 are connected, they are sealed, and finally the sealing performance of the inner cavity 4 is improved.

Embodiment five:

As shown in FIG. 11, the base 1 is provided with a welding groove 17, and the rubber cover 2 is provided with a welding rib 18, and the welding groove 17 and the welding rib 18 are welded and sealed by ultrasonic or laser.

Using 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 is sealed with the base 1, and finally the sealing performance of the inner cavity 4 is improved.

Embodiment 6:

As shown in FIG. 9, the glue cover 2 is provided with a second glue adding groove 19, the second glue adding groove 19 is provided at the periphery of the terminal assembly 9 where the glue cover 2 passes through, and the second glue adding groove 19 A second sealant 20 is added inside.

Using any of the above embodiments, when sealing the terminal assembly 9 and the rubber cover 2, a second glue groove 19 can be provided on the rubber cover 2, and a second seal can be added to the second glue groove 19 at the same time. The glue 20 is used to seal the terminal assembly 9 and the glue cover 2 through the second sealing glue 20, and finally the sealing performance of the inner cavity 4 is improved.

Embodiment Seven:

As shown in FIG. 11, the terminal assembly 9 and the rubber cover 2 are sealed by an integral overmolding.

Using any one of the above embodiments, when the terminal assembly 9 and the rubber cover 2 are sealed, it is also possible to adopt an integral overmolding (encapsulation) method between the terminal assembly 9 and the rubber cover 2. The component 9 passes through the rubber cover 2 for encapsulation, and finally the sealing performance of the inner cavity 4 is improved.

Embodiment 8:

As shown in FIG. 12, the terminal assembly 9 and the rubber cover 2 and the connection between the rubber cover 2 and the base 1 are sealed by overmolding.

Using any of the above-mentioned embodiments, it is also possible to simultaneously overmold the rubber cover 2 and the base 1, the terminal assembly 9 and the rubber cover 2, so that the rubber cover 2 and the base 1 can be overmolded at the same time. By sealing, the terminal assembly 9 is sealed with the rubber cover, and finally the sealing performance of the inner cavity 4 is improved.

When the refrigerator door switch is sealed, any combination can be made through the above embodiments, and the sealing method for the refrigerator door switch is not limited to the above-mentioned sealing method, and other sealing methods are also possible.

The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. All those who are familiar with the profession make use of the technical content disclosed above to make minor changes, modifications, and equivalent changes within the scope of the technical solution of the present invention, all of which are equivalent embodiments of the present invention; at the same time, Any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

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 arranged between the outer cavity and the inner cavity, and the through hole is A sealing component and a sealing oil are provided. The outer cavity of the base and the inner cavity are sealed through the sealing component and the sealing oil. The rubber cover is connected to the base in a sealed manner and covered with the inner cavity. The outer cavity is provided with a pressing component The inner cavity is provided with a terminal assembly, which is connected to each other through the through-hole of the rotating shaft, one end of the terminal assembly passes through the rubber cover and is arranged outside the rubber cover, and the terminal assembly and the rubber cover are sealed.
The sealed refrigerator door switch according to claim 1, wherein the pressing component includes a button and a torsion spring, and the torsion spring arm on the torsion spring abuts against the lower end of the button, and the terminal assembly It includes a static terminal component and a moving piece component. One end of the rotating shaft is connected with a button, and the other end is connected to the moving piece component by dialing.
A sealed refrigerator door switch according to claim 2, wherein the sealing assembly comprises a sealing box and a first sealing ring, the sealing box is arranged in the outer cavity, and 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.
The sealed refrigerator door switch according to claim 2, wherein the sealing assembly includes a first groove and a second sealing ring, and the first groove is arranged in the inner cavity and arranged in the through hole. On the outside, one end of the rotating shaft provided in the inner cavity is provided with an engaging block that matches with the first groove, a second groove is formed between the engaging block and the rotating shaft, and the sealing oil is filled in the first groove. The groove and/or the second groove, and the second sealing ring is arranged in the first groove and/or the second groove.
The sealed refrigerator door switch according to claim 2, characterized in that: the connection between the base and the rubber cover is provided with a first glue groove, and a first seal is added in the first glue groove. glue.
A sealed refrigerator door switch according to claim 2, characterized in that: a sealing groove is provided on the base and arranged outside the inner cavity, and a sealing gasket is arranged in the sealing groove, and the sealing gasket The base is sealed with the rubber cover.
The sealed refrigerator door switch according to claim 2, 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 by ultrasonic or laser. Welding and sealing.
The sealed refrigerator door switch according to claim 2, wherein the glue cover is provided with a second glue groove, and the second glue groove is provided at the periphery of the terminal assembly passing through the glue cover. A second sealant is added in the second glue adding groove.
The sealed refrigerator door switch according to claim 2, characterized in that: the terminal assembly and the rubber cover are sealed by an integral overmolding.
The sealed refrigerator door switch according to claim 2, characterized in that: the connection between the terminal assembly and the rubber cover, and the connection between the rubber cover and the base is sealed by overmolding.