CN112040696B

CN112040696B - Net device with electrostatic protection function

Info

Publication number: CN112040696B
Application number: CN202010967037.7A
Authority: CN
Inventors: 黄暐智
Original assignee: Zhonglei Electronics Co ltd; Zhonglei Electronics Suzhou Co ltd
Current assignee: Zhonglei Electronics Co ltd; Zhonglei Electronics Suzhou Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-09-14
Anticipated expiration: 2040-09-15
Also published as: CN112040696A; JP2022048967A; JP7158528B2

Abstract

The invention provides a net communication device with an electrostatic protection function. The shell is provided with an air hole which is communicated with the inside and the outside of the shell. The circuit board is arranged in the shell and is provided with an exposed grounding wire. The temperature and humidity sensor is mounted on the circuit board. The exposed grounding wire is positioned between the temperature and humidity sensor and the edge of the circuit board. The air-permeable waterproof membrane is arranged on the surface of the shell and covers the air hole. The cover body is configured on the circuit board and covers the temperature and humidity sensor. Temperature and humidity sensor holds the holding chamber in the lid. The holding cavity of the cover body is communicated with the outside of the shell through the opening of the cover body, the breathable waterproof membrane and the air hole. The network communication device can accurately acquire the external temperature and humidity.

Description

Net device with electrostatic protection function

Technical Field

The present disclosure relates to portable electronic devices, and particularly to a portable electronic device with electrostatic protection.

Background

With the progress of network technology, various network communication devices are more widely applied to the life of people. Many netcom devices are installed outdoors, and therefore need to be able to operate normally in various harsh environments such as sunlight, rain, etc. For this reason, some netcom devices need to be provided with temperature and humidity sensors to sense environmental changes and perform corresponding treatment. However, the temperature and humidity sensor is easily damaged by electrostatic discharge.

Disclosure of Invention

The invention aims at a net communication device with an electrostatic protection function, and can solve the problem that a temperature and humidity sensor is easy to damage.

According to the embodiment of the invention, the net communication device with the electrostatic protection function comprises a shell, a circuit board, a temperature and humidity sensor, a breathable waterproof film and a cover body. The housing has an air hole communicating the inside and outside of the housing. The circuit board is arranged in the shell and is provided with a naked grounding wire. The temperature and humidity sensor is mounted on the circuit board. The exposed grounding wire is positioned between the temperature and humidity sensor and the edge of the circuit board. The breathable waterproof film is arranged on the surface of the shell and covers the air hole. The cover body is configured on the circuit board and covers the temperature and humidity sensor. The temperature and humidity sensor is accommodated in the accommodating cavity in the cover body. The containing cavity of the cover body is communicated with the outside of the shell through the opening of the cover body, the breathable waterproof membrane and the air hole.

According to an embodiment of the present invention, the number of the air holes is four, and the diameter of each of the air holes is 1.4mm ± 10%.

According to an embodiment of the present invention, the material of the cover is rubber.

According to an embodiment of the invention, the exposed ground wire surrounds the temperature and humidity sensor.

According to an embodiment of the invention, a portion of the cover is sandwiched between the housing and an edge of the circuit board.

According to the embodiment of the invention, the circuit board is provided with a circuit clearance area and a through hole, and the temperature and humidity sensor is mounted on the circuit clearance area.

According to an embodiment of the invention, the through hole and the exposed ground wire surround the temperature and humidity sensor.

According to the embodiment of the invention, the number of the through holes is three, the through holes are positioned on three sides of the circuit clearance area, and the exposed grounding wire is positioned on the other side of the circuit clearance area.

According to the embodiment of the invention, the through hole is not communicated with the accommodating cavity.

According to an embodiment of the present invention, at least a portion of the exposed ground wire is exposed in the accommodating cavity.

Based on the above, in the network communication device of the invention, the temperature and humidity sensor is not easily damaged by static electricity and can accurately measure the temperature and humidity of the environment.

Drawings

Fig. 1 is a schematic view of a network device with electrostatic protection function according to an embodiment of the present invention;

fig. 2 is a partial schematic view of the interior of the netcom device of fig. 1;

FIG. 3 is a partial cross-sectional view of the net-communication device of FIG. 1;

fig. 4 is another partial schematic view of the interior of the netcom device of fig. 1;

fig. 5 is another partial schematic view of the interior of the netcom device of fig. 1;

fig. 6 is another partial schematic view of the interior of the netcom device of fig. 1.

Detailed Description

Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

Fig. 1 is a schematic view of a network device with electrostatic protection function according to an embodiment of the present invention. The housing 110 of the net ventilation device 100 with electrostatic protection function of the present embodiment has an air hole 112 communicating the inside and the outside of the housing 110. The network communication device in this embodiment is, for example, a home gateway or a distributed (Mesh) wireless relay supporting a smart speaker, a wireless access point using a 6GHz unlicensed frequency band, a low power wide area network (LPWA) signal conversion controller, a low power wide area network locator/tracker (tracker), but the invention is not limited thereto.

Fig. 2 is a partial schematic view of the interior of the netcom device of fig. 1. Fig. 3 is a partial cross-sectional view of the netcom device of fig. 1. The network communication device 100 of the present embodiment includes a housing 110, a circuit board 120, a temperature and humidity sensor 130, a breathable waterproof film 140, and a cover 150. The circuit board 120 is disposed in the housing 110 and has a circuit clearance area 122, a through hole 124 and a bare ground line 126. The through holes 124 and the exposed ground line 126 may surround the temperature and humidity sensor 130, and the exposed ground line 126 and each through hole 124 may be in the shape of a bar. The temperature and humidity sensor 130 is an integrated circuit capable of sensing ambient temperature and/or humidity, and is mounted on the circuit clearance area 122 of the circuit board 120. The trace clearance area 122 is an area of the circuit board 120 that has no trace or ground layer other than the trace 132 for connecting the temperature/humidity sensor 130 and the exposed ground line 126. Therefore, the temperature and humidity sensor 130 can be prevented from being affected by heat generated by other circuits during operation, so as to ensure accurate measurement of the ambient temperature and/or humidity. In addition, since the through hole 124 and the exposed ground wire 126 surround the temperature/humidity sensor 130, heat energy in other areas of the circuit board 120 is less likely to be conducted to the temperature/humidity sensor 130 through the circuit board 120 to affect the measurement of the ambient temperature and/or humidity.

The bare ground 126 is located between the temperature and humidity sensor 130 and an edge 128 of the circuit board 120. Therefore, when electrostatic discharge (ESD) is generated from the outside, the static electricity passing through the air hole 112 basically hits the exposed ground line 126, and the static electricity is conducted away through the exposed ground line 126, thereby protecting the temperature and humidity sensor 130 from the damage of the ESD.

The air-permeable waterproof film 140 is disposed on an inner surface (or an outer surface) of the casing 110 and covers the air hole 112. The cover 150 is disposed on the circuit board 120 and covers the temperature/humidity sensor 130. The cover 150 contacts the air-permeable waterproof membrane 140. The temperature and humidity sensor 130 is accommodated in the accommodating cavity 152 in the cover 150. The receiving cavity 152 of the cover 150 communicates with the outside of the housing 110 through the opening 154 of the cover 150, the air-permeable waterproof film 140, and the air hole 112. In other words, the cover 150 isolates the accommodating cavity 152 where the temperature and humidity sensor 130 is located from other spaces inside the network communication device 100, and the accommodating cavity 152 where the temperature and humidity sensor 130 is located is communicated with the external environment. Air in the external environment can enter the accommodating cavity 152 through the air hole 112 and the air-permeable waterproof membrane 140, so that the temperature and humidity sensor 130 can measure the ambient temperature and/or humidity. In addition, the air-permeable waterproof membrane 140 can prevent water droplets from entering the inside of the network communication device 100, thereby not only protecting the temperature and humidity sensor 130, but also maintaining the waterproof state of the network communication device 100.

According to the above, the network communication device 100 of the embodiment can normally operate in a waterproof state, and the temperature and humidity sensor 130 can also accurately measure the temperature and/or humidity of the environment to avoid being affected by the heat energy generated in the network communication device 100, and can also avoid the temperature and humidity sensor 130 from being damaged by the electrostatic discharge.

According to an embodiment of the present invention, the number of the air holes 112 is four, and the diameter of each air hole 112 is 1.4mm ± 10%. In other embodiments, the number of air holes 112 may be more or less, and the shape and size of the air holes may be changed according to the requirement.

In the embodiment of the present invention, the cover 150 is made of rubber, but may be made of other materials suitable for isolating heat energy from air.

In the embodiment of the present invention, the exposed ground wire 126 may also surround the temperature/humidity sensor 130, but may also simply pass between the temperature/humidity sensor 130 and the edge 128 of the circuit board 120. At least a portion of the exposed ground wire 126 is exposed in the accommodating cavity 152.

In an embodiment of the present invention, a portion of the cover 150 is sandwiched between the housing 110 and the edge 128 of the circuit board 120. In this way, it is ensured that the communication with the external environment is limited to the accommodating cavity 152 in the cover 150, and the cover 150 can serve as a buffer between the circuit board 120 and the housing 110.

In the embodiment of the present invention, the number of the through holes 124 is three, the through holes 124 are located on three sides of the circuit clearance area 122, and the exposed ground line 126 is located on the other side of the circuit clearance area 122. The through holes 124 may not completely surround three sides of the circuit clearance area 122, so as to prevent the circuit clearance area 122 from having insufficient connection strength with other portions of the circuit board 120, and also to keep the routing space of the circuit 132 related to the temperature/humidity sensor 130. If the trace clearance area 122 is at a corner of the circuit board 120, the through-hole 124 only needs to be located at the other two sides of the trace clearance area 122, which are far from the edge of the circuit board 120. The through hole 124 of the present embodiment is not communicated with the receiving cavity 152. As can be seen in fig. 3, the through hole 124 is located outside the receiving cavity 152. Therefore, the other space inside the net communication device 100 is not communicated with the accommodating cavity 152 through the through hole 124, so that heat energy of the other space inside the net communication device 100 is prevented from entering the accommodating cavity 152, and air of the external environment is also prevented from entering the other space inside the net communication device 100 through the accommodating cavity 152. In other words, the air hole 112 is the only air inlet/outlet of the receiving cavity 152.

Fig. 4 is another partial schematic view of the interior of the netcom device of fig. 1. The housing 110 of the present embodiment may be provided with a support structure 114 near the air hole 112, and the support structure 114 is omitted in fig. 2 and 3. The support structure 114 may be used to provide a proper positioning effect of the breathable waterproof membrane 140. Fig. 5 is another partial schematic view of the interior of the netcom device of fig. 1. The support structure 114 may also be used to provide a proper positioning effect of the cover 150, with the breathable waterproof membrane 140 positioned outside the opening 154 of the cover 150. The orientation of fig. 4 and 5 is upside down compared to fig. 2 and 3. Fig. 6 is another partial schematic view of the interior of the netcom device of fig. 1. As can be more clearly understood from fig. 6, the cover 150 is disposed on the circuit board 120 and covers the temperature/humidity sensor 130, and a portion of the cover 150 is located outside the edge 128 of the circuit board 120. Moreover, the two through holes 124 are located at two sides of the cover 150, so that the through holes 124 are not communicated with the accommodating cavity 152 but located outside the accommodating cavity 152, similar to the through holes 124 of fig. 3.

In summary, in the network communication device with the electrostatic protection function, the circuit clearance area and the through hole can prevent the temperature and humidity sensor from being affected by heat energy of other areas in the network communication device, the exposed ground wire can protect the temperature and humidity sensor from being damaged by electrostatic discharge, the breathable waterproof film can protect the temperature and humidity sensor and maintain the waterproof state of the network communication device, and the cover body enables the accommodating cavity where the temperature and humidity sensor is located to be isolated from other spaces in the network communication device. Some of these features may be omitted in some embodiments, for example, some embodiments may not include line clearance areas and vias.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A net leading device with electrostatic protection function is characterized by comprising:

a housing having an air hole communicating an inside and an outside of the housing;

the circuit board is arranged in the shell and is provided with a naked grounding wire;

the temperature and humidity sensor is arranged on the circuit board, wherein the exposed grounding wire is positioned between the temperature and humidity sensor and the edge of the circuit board close to the air hole, or the exposed grounding wire surrounds the temperature and humidity sensor;

a breathable waterproof film disposed on the surface of the casing and covering the air hole; and

the cover body is configured on the circuit board and covers the temperature and humidity sensor, the temperature and humidity sensor is accommodated in the accommodating cavity in the cover body, the opening of the cover body corresponds to the air hole, the accommodating cavity of the cover body is communicated with the outside of the shell through the opening, the breathable waterproof membrane and the air hole, and at least one part of the exposed grounding wire is exposed in the accommodating cavity.

2. The net pass device with electrostatic protection function as claimed in claim 1, wherein the number of the air holes is four, and the diameter of each air hole is 1.4mm ± 10%.

3. The device as claimed in claim 1, wherein the cover is made of rubber.

4. The device as claimed in claim 1, wherein the exposed ground wire surrounds the temperature and humidity sensor.

5. The device as claimed in claim 1, wherein a portion of the cover is sandwiched between the housing and the edge of the circuit board.

6. The device of claim 1, wherein the circuit board has a circuit clearance area and a through hole, and the temperature/humidity sensor is mounted in the circuit clearance area.

7. The device as claimed in claim 6, wherein the outer frame of the circuit clearance area is rectangular, the number of the through holes is three, the exposed ground wires are located on the side of the circuit clearance area close to the air holes, and the through holes are located on the other three sides of the circuit clearance area.

8. The device as claimed in claim 6, wherein the through hole is not connected to the receiving cavity.

9. The device of claim 6, wherein the circuit clearance area is a portion of the circuit board in the circuit clearance area, and has no other circuit or ground layer except for the circuit for connecting the temperature and humidity sensor and the exposed ground line.