KR101884116B1 - Waterproof Connector - Google Patents

Abstract

Provided is a powerful waterproof connector with a simple structure which is provided on one side of an electronic device, and electrically connects the electronic device and an external terminal. The waterproof connector comprises a shell unit in which an inner wall surface has a water repellent region, and an entrance surface of an insertion hole has a hydrophilic region while providing the insertion hole into which the external terminal is inserted.

Description

Waterproof Connector {Waterproof Connector}

The present invention relates to a waterproof connector, and more particularly, to a waterproof connector that provides a high waterproofing power by having a hydrophilic / water repellent region in combination.

Recently, portable electronic devices, for example, smart phones have become a necessity in modern life because they provide various functions such as a call and a character, a schedule management function, and an electronic notebook function.

Accordingly, there is a need to constantly use portable electronic devices. Especially, although it tries to use electronic equipment stably even in water such as a swimming pool or a swimming pool, since the connector of the electronic device, for example, the ear jack and the USB port portion are very sensitive to moisture, it is necessary to secure absolutely waterproof.

However, the waterproof connector that has been studied to date has a difficulty in utilizing the waterproof connector because its structure becomes very complicated even if it is weak in waterproofness or provides high waterproofness. Thus, the inventors of the present invention have invented a waterproof connector that provides a very simple structure and high water resistance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof connector having high water resistance.

Another object of the present invention is to provide a waterproof connector having a simple structure.

Another object of the present invention is to provide a waterproof connector having excellent mass productivity.

The technical problem to be solved by the present invention is not limited to the above.

In order to solve the above technical problems, the present invention provides a waterproof connector.

According to an embodiment of the present invention, there is provided a waterproof connector provided at one side of an electronic device and electrically connecting the electronic device to an external terminal, the waterproof connector including: an insertion port into which the external terminal is inserted, And a shell portion having a water repellent region and an inlet surface of the insertion port having a hydrophilic region.

According to another embodiment, there is provided a waterproof connector provided at one side of an electronic device and electrically connecting the electronic device to an external terminal, wherein the waterproof connector is provided with an insertion port into which the external terminal is inserted, A shell portion made of a water-repellent region, and an electrode provided on the inner side of the shell portion, the surface of which is a hydrophilic region relatively to the water-repellent region.

According to embodiments, when the hydraulic diameter defined by the insertion port is 2 mm or less, the contact angle of the water-repellent region may be 130 degrees or more.

According to embodiments, when the hydraulic diameter defined by the insertion port is 3 mm or less, the contact angle of the water-repellent region may be 150 degrees or more.

According to embodiments, the water-repellent area is formed of a spray-coated water-repellent layer, and the thickness of the water-repellent layer may become thicker as the distance from the inlet of the insertion port increases.

According to embodiments, the hydrophilic region comprises a hydrophilic layer, and the hydrophilic layer may comprise a conductive material.

According to another embodiment, the inlet opening face may be a hydrophilic area.

According to another embodiment, the hydrophilic area of the inlet opening may be discontinuous with the position of the electrode.

According to another embodiment of the present invention, it is possible to further include a socket portion extending in the same direction as the insertion port, and spaced apart from the inner wall surface of the shell portion by a predetermined distance to narrow the hydraulic diameter by the insertion port.

According to another embodiment, the water-repellent region is made of a water-repellent layer, and the thickness of the water-repellent layer may be lower than the thickness of the electrode.

According to another embodiment, the electrode extends to the inlet opening face, and one end of the electrode toward the inlet opening face side may have a water repellent area.

According to another embodiment of the present invention, the electrode is located at a predetermined distance from the inlet opening face, and a water repelling area may be provided between the inlet opening face and the electrode.

The waterproof connector according to an embodiment of the present invention may include a shell portion that provides an insertion port into which the external terminal is inserted, wherein the inner wall surface has a water repellent region and the inlet surface of the insertion port has a hydrophilic region.

According to an embodiment of the present invention, since the inlet surface has hydrophilicity and the inner wall surface has water repellency, it absorbs external moisture by hydrophilicity and pushes moisture by its internal water repellency, thereby providing high water repellency.

According to another aspect of the present invention, there is provided a waterproof connector according to another embodiment of the present invention, which includes a shell portion having an inner wall surface formed of a water-repellent region, and an electrode provided on the inner side of the shell portion, .

According to another embodiment of the present invention, even if moisture is introduced into the insertion port of the waterproof connector, the hydrophilicity of the electrode pulls moisture, and the water repellency of the inner wall surface pushes moisture, .

 The effects of the present invention are not limited to those described above.

1 is a view for explaining a waterproof connector according to a first embodiment of the present invention.
Fig. 2 is a view for explaining the section A of Fig. 1;
3 is a view for explaining a waterproof connector according to a second embodiment of the present invention.
Fig. 4 shows the result of the droplet behavior test according to the hydrophilic and water repellent treatment.
Fig. 5 shows the water resistance test result according to the contact angle.
Fig. 6 shows the water resistance test result according to the hydraulic diameter.
FIG. 7 shows the experimental results on the water penetration ratio according to the hydraulic diameter.
Fig. 8 shows a water penetration experiment result of a glass tube having a water-repellent property and a glass tube having only water-repellent properties.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also, in the drawings, the shape and thickness are exaggerated for an effective description of the technical content.

Also, while the terms first, second, third, etc. in the various embodiments of the present disclosure are used to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. Thus, what is referred to as a first component in any one embodiment may be referred to as a second component in another embodiment. Each embodiment described and exemplified herein also includes its complementary embodiment. Also, in this specification, 'and / or' are used to include at least one of the front and rear components.

The singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms such as " comprises "or" having "are intended to specify the presence of stated features, integers, Should not be understood to exclude the presence or addition of one or more other elements, elements, or combinations thereof. Also, in this specification, the term "connection " is used to include both indirectly connecting and directly connecting a plurality of components.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1A is a view for explaining a waterproof connector according to a first embodiment of the present invention, and FIG. 2 is a view for explaining a section A-B of FIG. 1A. The waterproof connector 100 to be described below is provided on one side of the electronic device and can function as an interface for electrically connecting the electronic device and the external terminal.

Referring to FIG. 1, the waterproof connector according to the first embodiment of the present invention may include a shell 110 into which an external terminal is inserted. Hereinafter, each configuration will be described in detail.

The shell 110 may provide an insertion port 120 into which an external terminal is inserted. In another aspect, a region surrounded by the inner wall surface 114 of the shell 110 may be defined as the insertion port 120. [ The insertion port 120 may have a structure extending in the Z-axis direction to receive the external terminal.

The inner wall surface 114 of the shell 110 may have a water-repellent area pho. The water-repellent region means a region having water repellency. The surface of the inner wall surface 114 itself may have water-repellent property, and another water-repellent layer may be formed on the inner wall surface 114. Hereinafter, it is assumed that a water repellent layer (pho) is formed on the inner wall surface 114 of the shell part 110 for convenience of explanation. 1, a part of the inner wall surface 114 is covered by the socket part 150, but it is needless to say that the area covered by the socket part 150 may also be a water-repellent area.

The water repellent layer (pho) is formed on the inner wall surface 114 to prevent moisture from penetrating into the insertion port 120. To this end, the water-repellent layer may be made of at least one material selected from among a borosilicate resin, a fluorinated coating material and a carbon-based coating material. If the carbon-based coating material is, for example, DLC (Diamond Like Carbon).

The water-repellent layer (pho) may be formed of a material having a corresponding contact angle according to a hydraulic diameter. For example, when the hydraulic diameter is in the range of 1.5 mm to 2.5 mm, the contact angle of the water-repellent layer may be 130 to 160 degrees. When the hydraulic diameter is in the range of 2.5 mm to 3.5 mm, the contact angle of the water-repellent layer may be 150 to 170 degrees.

An electrode 130 may be formed on the inner side of the shell 110, for example. The electrode 130 may extend in the Z-axis direction. At this time, the electrode 130 may extend to the end of the inlet surface of the shell 110. The electrode 130 may be, for example, at least one of a ground electrode for providing a ground to the external terminal, a driving electrode for providing a driving voltage, and / or a signal electrode for providing a signal voltage. Although three electrodes 130 are shown in the figure for convenience of explanation, it is only for convenience of explanation, and it is needless to say that fewer or more electrodes can be provided.

As described above, the inner wall surface 114 of the shell 110 has a water-repellent area pho. Alternatively, the surface of the electrode 130 may have a hydrophilic area. The surface of the electrode 130 may be hydrophilic so that the electrode 130 has relatively low water repellency than the water repellent region pho of the inner wall surface 114 of the shell 110 . That is, not only the case where the surface of the electrode 130 is subjected to a separate hydrophilic treatment but also the case where the surface of the electrode 130 is not subjected to a separate hydrophilic treatment, the inner wall surface 114 of the shell 110, In comparison, it can be understood that the surface of the electrode 130 has a hydrophilic region.

According to one embodiment, when the surface of the electrode 130 is subjected to a separate hydrophilic treatment, the surface of the electrode 130 itself may have hydrophilicity, and another hydrophilic layer may be formed on the surface of the electrode 130 phi) may be formed.

For example, when a separate hydrophilic layer is formed on the surface of the electrode 130, the hydrophilic layer phi may include at least one of an ester compound, a silicone compound, and a polyoxyethylene compound. At this time, the ester compound may include at least one of propylene glycol ester and polyethylene glycol ester, the silicone compound may include dimethyl silicone, and the polyoxyethylene compound may be polyoxyethylene alkylnonylphenol ether .

If a hydrophilic layer is formed on the surface of the electrode 130, the hydrophilic layer may include at least one of a conductive material, for example, a conductive polymer such as PEDOT and PANI (Polyaniline). Thus, the electrical connection performance between the external terminal and the electrode 130 can be assured. Hereinafter, for convenience of explanation, it is assumed that the surface of the electrode 130 is not subjected to any other process.

As a result, the inner wall surface 114 of the shell 110 is entirely a water-repellent region, and the region where the electrode 130 is formed may be a hydrophilic region.

Also, according to one embodiment, the thickness of the water-repellent region located on the inner wall surface 114 of the shell 110 may be lower than the thickness of the electrode 130. That is, the thickness of the water repellent area in the Y-axis direction located on the inner wall surface 114 of the shell part 110 may be lower than the thickness of the electrode 130 in the Y-axis direction. Thus, it is possible to prevent the water-repellent region from being worn by the friction generated in the process of the external terminal being drawn into and / or drawn out of the shell portion 110. That is, the surface of the electrode 130 provides a friction surface with the external terminal in the process of the external terminal being drawn into and / or drawn out of the shell 110, thereby preventing the water-repellent region from being worn. Furthermore, since the electrode 130 narrows the hydraulic diameter in the shell 110 according to the thickness of the electrode 130, the hydrodynamic force can be further improved.

The shell portion 110 may have an inlet surface 112 of the insertion port 120. The inlet surface 112 refers to the outer surface of the shell 110 from another point of view. The inlet surface 112 may have a hydrophilic area phi. The hydrophilic region means a region having hydrophilicity. The surface of the entrance surface 112 itself may have a hydrophilic property, and a separate hydrophilic layer may be formed on the entrance surface 112. Hereinafter, for convenience of explanation, it is assumed that a hydrophilic layer (phi) is formed on the entrance surface 112.

The hydrophilic layer phi may be formed on the entrance surface 112 to absorb moisture before the moisture enters the insertion port 120.

According to one embodiment, the inlet surface 112 may optionally have a hydrophilic area, depending on the location of the inlet surface 112. 1, when the electrode 130 extends to the end of the inlet surface of the shell 110, a hydrophilic area of the inlet surface 112 may be discontinuous with the electrode 130, . In other respects, the surface 113 of the inlet surface 112, which is continuous with the electrode 130, may have a water repellent property. This is to prevent moisture from continuously penetrating from the inlet surface to the electrode and penetrating the inside of the insertion port when the hydrophilic area is provided up to the inlet surface 113 located on the surface continuous with the electrode 130.

Meanwhile, the waterproof connector 100 according to an embodiment of the present invention may further include a socket unit 150. Electrical signals and / or voltages may be provided by electrically connecting external terminals to the electrodes 152 of the socket portion 150.

The socket part 150 may extend in the same direction Z as the insertion opening 120 and may be spaced apart from the inner wall surface 114 of the shell part 110 by a predetermined distance in the Y axis direction and the X axis direction. In this case, the socket unit 150 can perform a function of narrowing the hydraulic diameter of the insertion port 120. As the hydraulic diameter narrows, the water permeability can be further increased because the amount of water that can permeate becomes smaller. In other words, the socket unit 150 can perform a function of increasing the water resistance by narrowing the hydraulic diameter in addition to providing the electric signal and / or voltage to the external terminal. To this end, the surface of the socket portion 150 may be a water-repellent region except for the electrode 152.

Referring to FIG. 2, the water-repellent layer thickness profile along the depth from the inlet surface 112 of the insertion port 120 can be confirmed. That is, the thickness of the water-repellent layer pho formed on the inner wall surface 114 may become thicker as the distance from the inlet surface 112 of the insertion port 120 increases. That is, the inner thickness of the water-repellent layer (pho) may be greater than the outer thickness T2 of T1. As a result, as the water repellent layer (pho) becomes thicker, the inner hydraulic diameter can be made smaller than the outside hydraulic diameter D2 by D1. Therefore, it is possible to further enhance the water resistance of the inner region more sensitive to waterproofing.

The waterproof connector 100 according to the first embodiment of the present invention has been described from a structural point of view. Hereinafter, a method of manufacturing a waterproof connector according to a first embodiment of the present invention will be described.

The water repellent layer (pho) according to one embodiment of the present invention may be formed, for example, by spray coating. To this end, the non-repellent region can be masked. For example, the electrode 130 and / or the socket portion 150 of the shell 110 may be masked. Through this spray coating, a water repellent layer (pho) can be coated on the inner wall surface 114. Referring to FIG. 2, a water repellent layer is sprayed through the insertion port 120 to form a water repellent layer (pho) on the inner wall surface 114. After the water-repellent layer is formed, the masking can be removed.

When the spray coating is performed, the region exposed to the outside through the insertion port 120 can be more easily water-repellent coated. Accordingly, the inner wall surface of the insertion port 120 can be more easily water-repellent than the inner surface of the outer mouth. Therefore, by performing the spray water repellent coating process, naturally, as shown in FIG. 2, the thickness of the water repellent layer (pho) can be made thicker as the distance from the inlet of the insertion port is increased.

Although the spray coating of the water repellent layer (pho) has been described, it is needless to say that the inner wall surface can be treated to have the water repellent region by other processes.

A hydrophilic layer (phi) may be formed before or after forming the water-repellent layer (pho). The hydrophilic layer may be formed on the electrode 130 and / or the inlet surface 112. If necessary, non-hydrophilic areas can be spray coated with a hydrophilic material after masking treatment. Alternatively, a hydrophilic region can be realized through corona discharge treatment, ozone treatment or plasma treatment.

Hereinafter, the waterproof mechanism of the waterproof connector according to the first embodiment of the present invention will be described.

When moisture is brought into contact with the waterproof connector 100, the inlet surface 112, which is primarily hydrophilic, can function to spread water. In this way, moisture can be prevented from entering the inside of the insertion port 120.

Even if moisture enters the insertion port 120, the water-repellent inner wall surface 114 blocks the penetration of moisture. At this time, since the socket 150 can reduce the hydraulic diameter, the waterproof ability can be further improved. Further, as the thickness of the water-repellent layer (pho) becomes thicker toward the inner side from the inlet of the insertion port 120, the hydraulic diameter can be further reduced, and the waterproofing ability can be further improved.

Meanwhile, the waterproof connector 100 according to the first embodiment of the present invention can easily discharge moisture that has entered the insertion port 120. Since the wall surface of the insertion port 120 is water repellent and the electrode 130 is hydrophilic and the water hydraulic diameter increases toward the inlet of the insertion port 120, It can be easily discharged.

Modifications of the first embodiment of the present invention will now be described with reference to Figs. 1B and 1C. Modifications to be described below are different from each other in the configuration of the electrode 130, and the other configurations are the same as those described with reference to FIGS. 1A and 2, and thus a detailed description thereof will be omitted.

1B is a view for explaining a waterproof connector according to a first modification of the present invention.

1B, the electrode 130 according to the first modification extends to the inlet opening 112 of the insertion opening 112 of the electrode 130, as described with reference to FIG. 1A, One side may have a water repellent area (pho). In this case, the inlet surface 112 of the shell 110 may have a hydrophilic area phi as a whole.

According to the first modification, a water-repellent region may be formed from the inlet surface 112 to a predetermined region of the electrode 130, and a hydrophilic region may be formed thereafter (in the Z-axis direction). As a result, the electrode 130 can have both conductivity and water repellency. That is, since the electrode 130 is thicker than the water-repellent region of the inner wall surface 114, the water-repellent property is improved by reducing the hydraulic diameter, and the water- Can be improved. Furthermore, since the Z-axis inner region of the electrode 130 is made of a hydrophilic region, the conductivity with the external terminal can be improved.

1C is a view for explaining a waterproof connector according to a second modification of the present invention.

Referring to FIG. 1C, the electrode 130 according to the second modification may be spaced apart from the inlet opening 112 by a predetermined distance in the z-axis direction, and the distance between the electrodes may be a water-repellent area pho. In this case, the inlet surface 112 of the shell 110 may have a hydrophilic area phi as a whole.

According to the second modification of the present invention, the electrode 130 is located at a predetermined distance from the inlet of the shell 110, and the separated space has a water-repellent area pho, so that the hydrostatic force can be further enhanced. In addition, since the size of the electrode 130 can be reduced, the cost required for manufacturing the electrode 130 can be reduced.

3 is a view for explaining a waterproof connector according to a second embodiment of the present invention.

The second embodiment to be described with reference to Fig. 3 differs from the first embodiment in that it is a connector for accommodating a different type of external terminal. In other words, the waterproof connector of the second embodiment differs from the first embodiment in that an electric signal and / or a voltage terminal to be provided to the external terminal is provided on the inner wall surface, same.

Referring to FIG. 3, the waterproof connector 200 according to the second embodiment may include a shell portion 210 having an inner wall surface 214 and an inlet surface 212. The shell part 210 may provide an insertion port 220 into which an external terminal is inserted.

At least one of the electrodes 230 may be provided on the inner wall surface 214 to provide an electric signal, a voltage, or a ground to the external terminal. The electrode 230 may have an annular shape along the inner wall surface 214.

The portion of the inner wall surface 214 where the electrode 230 is not formed may be a water-repellent region pho. As described with reference to FIG. 2, the water-repellent area pho may be formed thicker as the distance from the inlet surface 212 is increased.

The inlet surface 212 may have a hydrophilic area phi.

The waterproof connector according to the second embodiment has been described with reference to FIG.

Fig. 4 shows the result of the droplet behavior test according to the hydrophilic and water repellent treatment.

For the experiment, a glass tube having an inner diameter of 3 mm and a thickness of 1 mm was prepared, and a sample subjected to hydrophilic treatment on the inlet surface of the glass tube and a sample subjected to water repellency treatment on the inner wall surface were prepared. Fig. 4 (a) shows the droplet behavior of the sample subjected to the hydrophilic treatment on the inlet surface of the glass tube, and Fig. 4 (b) shows the droplet behavior of the sample on which the inner wall surface of the glass tube was treated by water repellency.

Referring to FIG. 4 (a), it can be confirmed that the water spreads thinly by the hydrophilicity of the inlet surface. Also, referring to FIG. 4 (b), it can be confirmed that moisture is formed due to water repellency of the inner wall surface, and no further entry into the glass tube is possible.

Accordingly, even if moisture is applied to the waterproof connector according to the first embodiment and the second embodiment of the present invention, water is absorbed by the inlet surface having the first hydrophilic property, and by the inner wall surface having the second hydrophobic property It was confirmed that additional moisture penetration was blocked.

Fig. 5 shows the water resistance test result according to the contact angle.

For the water resistance test according to the contact angle, a glass tube having a hydraulic diameter of 3.4 mm was prepared, and the inner surface of the glass tube was coated with a water repellent layer having a contact angle of 110 degrees, 130 degrees and 150 degrees, respectively.

Referring to FIGS. 5 (a) to 5 (c), it can be confirmed that the water penetration distance (red color) is shorter when the contact angle of the water repellent layer is larger in the case of having the same hydraulic diameter.

Fig. 6 shows the water resistance test result according to the hydraulic diameter.

For the water resistance test according to the hydraulic diameter, a glass tube coated with a water repellent layer having a contact angle of 130 degrees was prepared, and the hydraulic diameters of the respective glass tubes were 3 mm, 3.4 mm and 4 mm, respectively.

6 (a) to 6 (c), when the water repellent layer had the same contact angle, it was confirmed that the smaller the hydraulic diameter, the shorter the water penetration distance.

Thus, the present inventors have found that by placing the socket portion of the first embodiment in the insertion port, the hydraulic power can be reduced and the waterproofing power can be increased. Further, it can be interpreted that the water repellency can be further increased because the water repellent layer of the first and second embodiments is made thicker as the distance from the inlet surface is increased.

FIG. 7 shows the experimental results on the water penetration ratio according to the hydraulic diameter.

A glass tube having a length of 2 cm was prepared, and the water penetration rate according to the hydraulic diameter was measured, and it was measured according to the contact angle. Experimental results showed that the water penetration rate was lower as the contact angle was larger and the hydraulic diameter was smaller. On the other hand, it was confirmed that the water penetration rate was higher as the contact angle was smaller and the hydraulic diameter was larger.

As shown in Fig. 7, when the hydrodynamic diameter was 2 mm, when the contact angle was 130 degrees, it was possible to completely prevent moisture penetration (moisture penetration ratio: 0%). Therefore, when the water hole diameter of the insertion port is 2 mm or less, the waterproof connector can be secured with high water resistance by forming the inner wall surface of the waterproof connector into a water repellent layer having a contact angle of 130 degrees or more.

Also, when the hydraulic diameter was 3 mm, the water penetration was completely prevented (water penetration ratio 0%) when the contact angle was 150 degrees. Therefore, when the water hole diameter of the insertion port is 3 mm or less, the waterproof connector can be secured with high water resistance by forming the inner wall surface of the waterproof connector into a water repellent layer having a contact angle of 150 degrees or more.

Fig. 8 shows a water penetration experiment result of a glass tube having a water-repellent property and a glass tube having only water-repellent properties. More specifically, FIG. 8 shows a glass tube (FIG. 8 (a)) having an inlet surface of the insertion port having hydrophilicity (a contact angle of 5 degrees) and an inner wall surface of the insertion port having water repellency (a contact angle of 110 degrees) 110 degrees) and a water pipe having a water diameter of 3 mm (Fig. 8 (b)). For precise experiments, the same volume of droplets was scanned with continuous photographs.

Referring to FIG. 8 (a), it can be confirmed that the droplet provided from the outside can not be directed to the inside of the glass tube due to the hydrophilic property of the inlet surface.

On the other hand, referring to FIG. 8 (b), it can be seen that the droplet provided from the outside is formed gradually gradually due to the water repellency of the inlet surface, and eventually flows into the interior of the glass tube.

Accordingly, the inventors of the present invention have found that the waterproofing connector of the first and second embodiments has hydrophilicity and the inner wall surface has water repellency, thereby improving the waterproofing ability.

According to an embodiment of the present invention, the inner wall surface of the insertion port into which the external terminal is inserted may be a water-repellent region, and further, the entrance surface of the insertion port may be a hydrophilic region. Thus, even if moisture is applied, the inlet surface having the hydrophilic region primarily disperses the moisture, and the inner wall surface having the water-repellent region secondarily blocks moisture, thereby improving the waterproofing ability.

In addition, the hydraulic diameter can be narrowed in that the socket portion is provided in the insertion port, and the thickness of the water-repellent layer increases as the distance from the inlet surface increases. Accordingly, the waterproofing ability can be improved.

Further, by forming the water-repellent layer on the inner wall surface of the insertion port through the spray coating process, naturally, the thickness profile of the water-repellent layer can be provided suitably for providing high water-resistance.

Further, by forming a water-repellent region and / or a hydrophilic region through a simple process such as spray coating, processability and mass productivity can be improved.

In addition, the thickness of the water-repellent layer becomes thicker as the distance from the entrance surface increases, and the inflow water can be easily discharged because the inner wall electrode has hydrophilicity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

100, 200: Waterproof connector
110: Shell part
112: inlet face
113: inlet surface continuous with electrode
114: inner wall
120:
130: Socket electrode
150:
152: inner electrode
Pho: Water repellent area
Phi: hydrophilic area

Claims (12)

A waterproof connector, which is provided at one side of an electronic device and electrically connects the electronic device and an external terminal, the waterproof connector comprising:
And a shell portion provided with an insertion port into which the external terminal is inserted, wherein the inner wall surface has a water-repellent region and the entrance surface of the insertion port has a hydrophilic region,
Wherein the water-repellent region comprises a spray-coated water-repellent layer,
Wherein the thickness of the water-repellent layer is thicker as the distance from the inlet of the insertion port increases. A waterproof connector, which is provided at one side of an electronic device and electrically connects the electronic device and an external terminal, the waterproof connector comprising:
A shell portion provided with an insertion port into which the external terminal is inserted, the inner wall surface of which is a water-repellent region; And
And an electrode provided on the inner side of the shell portion and having a surface in a hydrophilic region relative to the water-repellent region,
Wherein the water-repellent region comprises a spray-coated water-repellent layer,
Wherein the thickness of the water-repellent layer is thicker as the distance from the inlet of the insertion port increases. 3. The method according to claim 1 or 2,
Wherein a contact angle of the water-repellent region is 130 degrees or more when the hydraulic diameter defined by the insertion port is 2 mm or less. 3. The method according to claim 1 or 2,
Wherein the contact angle of the water-repellent region is 150 degrees or more when the hydraulic diameter defined by the insertion port is 3 mm or less. delete 3. The method according to claim 1 or 2,
Wherein the hydrophilic region comprises a hydrophilic layer,
Wherein the hydrophilic layer comprises a conductive material. 3. The method of claim 2,
Wherein the inlet opening face has a hydrophilic area. 8. The method of claim 7,
And a hydrophilic region of the inlet opening face is provided discontinuously with the position of the electrode. The method of claim 2,
And a socket portion extending in the same direction as the insertion port and spaced apart from the inner wall surface of the shell portion by a predetermined distance to narrow the hydraulic diameter by the insertion port. 3. The method of claim 2,
The water-repellent region is made of a water-repellent layer,
Wherein the thickness of the water-repellent layer is lower than the thickness of the electrode. 3. The method of claim 2,
Wherein the electrode extends to the inlet opening face,
And one end of the electrode opposite to the inlet opening face side has a water repellent area. 3. The method of claim 2,
Wherein the electrode is located at a predetermined distance from the inlet opening face,
And a water-repellent area between the inlet port surface and the electrode.

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