CN211352250U

CN211352250U - Terminal equipment's casing and terminal equipment

Info

Publication number: CN211352250U
Application number: CN202020444413.XU
Authority: CN
Inventors: 赵钰; 张冲
Original assignee: Xian Yep Telecommunication Technology Co Ltd
Current assignee: Xian Yep Telecommunication Technology Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-08-25
Anticipated expiration: 2030-03-31

Abstract

The application provides a shell of a terminal device and the terminal device, wherein the shell comprises a shell, a substrate, a driving circuit and a supporting part, wherein the substrate is arranged on the inner surface of the shell; the supporting part comprises a first metal sheet, a second metal sheet and a relay; the first metal sheet is connected with a battery of the terminal equipment, and the second metal sheet is connected with a main board of the terminal equipment; the relay is in contact and communication with the first metal sheet, and the normally closed contact of the relay is in contact with the second metal sheet; a substrate for generating a resistance signal when an inner surface of the housing contacts the liquid; the main board is used for generating a pulse signal when the resistance signal is determined to accord with a preset signal; and the driving circuit is used for controlling the normally open contact to be connected when the pulse signal is detected so as to disconnect the first metal sheet and the second metal sheet. Whether liquid enters the terminal equipment can be accurately detected, and when the liquid is detected to be contacted, the terminal equipment is quickly shut down.

Description

Terminal equipment's casing and terminal equipment

Technical Field

The application relates to the technical field of terminal equipment, in particular to a shell of the terminal equipment and the terminal equipment.

Background

With the continuous development of terminal equipment technology, terminal equipment is widely developed and applied. Such as a smart phone, tablet computer, etc. When a user uses the terminal device, the terminal device is often dropped into a liquid due to carelessness and the like, for example, the terminal device is often dropped into water. In general, the main board inside the terminal device is burned out due to the immersion of water, so that the terminal device cannot be used normally. Therefore, how to make waterproof detection on the terminal equipment becomes a problem of much attention at present.

In the prior art, whether water enters the terminal equipment is mainly determined by detecting the air tightness of a single point between a rear cover of the terminal equipment and the terminal equipment, and when the water enters the terminal equipment, the terminal equipment is shut down in a soft shutdown mode.

However, in the prior art, when a user uses a terminal device, the terminal device inevitably fades and collides, which may affect the air tightness between the rear cover of the terminal device and the terminal device, and therefore, if a single-point air tightness detection mode is adopted, whether the terminal device is filled with water cannot be accurately detected; in addition, when the terminal equipment is shut down by adopting a soft shutdown mode, a certain time exists before the power supply is completely cut off, so that for the terminal equipment with poor air tightness, water can enter the terminal equipment in the time before the power supply is completely cut off, a mainboard of the terminal equipment is burnt out, and the terminal equipment cannot be normally used.

Disclosure of Invention

The application provides a terminal equipment's casing and terminal equipment, whether can accurately detect to get into liquid among the terminal equipment to when detecting to get into liquid among the terminal equipment, realize the quick shutdown processing to terminal equipment.

In a first aspect, the present application provides a housing for a terminal device, the housing comprising:

a housing, a substrate, a driving circuit, and a supporting part, wherein the substrate is disposed on an inner surface of the housing; the support part comprises a first metal sheet, a second metal sheet and a relay;

the first metal sheet is connected with a battery of the terminal equipment, and the second metal sheet is connected with a main board of the terminal equipment;

the relay is in contact with and communicated with the first metal sheet, and the normally closed contact of the relay is in contact with the second metal sheet;

the substrate is used for generating a resistance signal when the inner surface of the shell is contacted with liquid;

the main board is used for generating a pulse signal when the resistance signal is determined to accord with a preset signal;

and the driving circuit is used for controlling the normally open contact of the relay to be switched on when the pulse signal is detected, so that the first metal sheet and the second metal sheet are switched from on connection to off connection.

Further, the housing further includes: a resistance detection circuit; the resistance detection circuit is connected with the substrate, and the resistance detection circuit is connected with the mainboard;

the resistance detection circuit is used for converting the resistance signal into a voltage signal;

the main board is specifically configured to determine a resistance value signal according to the voltage signal corresponding to the resistance signal, and generate a pulse signal when the resistance value signal corresponds to a preset signal.

Further, the housing further includes: a circuit terminal; the first terminal part of the circuit terminal is connected with the resistance detection circuit, and the second terminal part of the circuit terminal is connected with the driving circuit, wherein the first terminal part comprises an AD terminal port which is connected with a signal output end of the resistance detection circuit, the second terminal part comprises a GPIO terminal port which is connected with a signal input end of the driving circuit; and each terminal port of the circuit terminal is connected with the mainboard.

Further, the resistance detection circuit is connected to the substrate through a wire.

Further, an insulating sheet is arranged between the first metal sheet and the second metal sheet.

Further, the support part further comprises a base; the first metal sheet, the second metal sheet, the relay and the insulating sheet are fixed on the base.

Furthermore, an insulating layer is arranged on the preset part of the outer surface of the first metal sheet and the outer surface of the second metal sheet.

Further, a humidity sensing film is arranged on the substrate.

Further, the substrate is in contact with an edge of the inner surface of the housing.

In a second aspect, the present application provides a terminal device, where the terminal device is provided with a housing as in any implementation manner of the first aspect.

The application provides a shell of a terminal device and the terminal device, the shell comprises a shell, a substrate, a driving circuit and a supporting part, wherein the substrate is arranged on the inner surface of the shell, the supporting part comprises a first metal sheet, a second metal sheet and a relay, the first metal sheet is connected with a battery of the terminal device, the second metal sheet is connected with a mainboard of the terminal device, the relay is in contact and communication with the first metal sheet, a normally closed contact of the relay is in contact with the second metal sheet, based on the situation, when the substrate is in contact with liquid on the inner surface of the shell, a resistance signal is generated, when the mainboard determines that the resistance signal accords with a preset signal, a pulse signal is generated, therefore, when the driving circuit detects the pulse signal, the normally open contact of the relay is controlled to be switched on, the conduction connection between the first metal sheet and the second metal sheet is disconnected, namely, the first metal sheet is disconnected with the second metal sheet, correspondingly, the battery is disconnected with the mainboard, and the terminal equipment is shut down. This application is based on whether get into liquid among the substrate accurate detection terminal equipment in this casing, moreover, when getting into liquid among the detection terminal equipment, through first sheetmetal and second metal fragment open and be connected, can make terminal equipment shut down immediately to avoid terminal equipment to be damaged, ensured terminal equipment's security.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural diagram of a mobile phone provided in the present application;

fig. 2 is a schematic structural diagram of a housing of a terminal device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a housing of a terminal device according to a second embodiment of the present application;

fig. 4 is a schematic structural diagram of a supporting portion according to a second embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a circuit terminal according to a second embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal device according to a third embodiment of the present application.

Reference numerals:

1-a housing;

2-a substrate;

3-a drive circuit;

4-a support part;

41-a first metal sheet;

42-a second metal sheet;

43-a relay;

431-a normally closed contact;

432-normally open contact;

44-an insulating sheet;

45-base;

46-an insulating layer;

5-a resistance detection circuit;

6-circuit terminals;

7-a wire;

8-Damp-sensing model.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The problem of water inflow in the terminal equipment is inevitably caused by various situations such as that the terminal equipment is placed in a clothes pocket and is forgotten to be taken out when clothes are washed, a mobile phone is carelessly dropped into a brook when a user goes out of a journey, and the like. At present, whether water enters the terminal equipment is mainly determined by detecting the air tightness of a single point between a rear cover of the terminal equipment and the terminal equipment, and the terminal equipment is shut down by adopting a soft shutdown mode when the water enters the terminal equipment. However, when a user uses the terminal device, the terminal device is inevitably faded and collided, which may affect the air tightness between the rear cover of the terminal device and the terminal device, and thus, if a single-point air tightness detection mode is adopted, it is impossible to accurately detect whether the terminal device is flooded; in addition, when the terminal equipment is shut down by adopting a soft shutdown mode, a certain time exists before the power supply is completely cut off, so that for the terminal equipment with poor air tightness, water can enter the terminal equipment in the time before the power supply is completely cut off, a mainboard of the terminal equipment is burnt out, and the terminal equipment cannot be normally used.

Based on this, the application provides a casing of a terminal device, the casing includes a shell, a substrate, a driving circuit and a supporting portion, wherein the supporting portion includes a first metal sheet, a second metal sheet and a relay, specifically, the first metal sheet is connected with a battery, the second metal sheet is connected with a main board of the terminal device, the first metal sheet is in contact with and communicated with the relay, the second metal sheet is in contact with a normally closed contact of the relay, then, when the terminal device is not in contact with liquid, the first metal sheet is in conductive connection with the second metal sheet through the relay, so that the battery is communicated with the main board, and at the moment, the terminal device works normally; when the inner surface of the shell is accurately detected to be in contact with liquid through the substrate, the normally open contact of the relay is controlled through the driving circuit to be switched on, so that the first metal sheet and the second metal sheet are disconnected, the battery is disconnected with the mainboard, and the terminal equipment is immediately powered off and shut down.

The application scenarios of the application are many, and one of the scenarios can be a smart phone. Fig. 1 is a schematic structural diagram of a mobile phone provided in an embodiment of the present application, where a rear cover of the mobile phone can adopt the housing provided in the present application, and whether the mobile phone enters into liquid is accurately detected through the housing, and when the liquid is accurately detected, the mobile phone is powered off and powered off immediately, so that a main board in the mobile phone is prevented from being burned out, and the security of the mobile phone is ensured.

The housing of the terminal device and the terminal device provided by the present application will be described in detail below.

Fig. 2 is a schematic structural diagram of a housing of a terminal device according to an embodiment of the present application, and as shown in fig. 2, the housing includes:

a housing 1, a substrate 2, a driving circuit 3, and a supporting portion 4, wherein the substrate 2 is disposed on an inner surface of the housing 1; the support portion 4 includes a first metal sheet 41, a second metal sheet 42, and a relay 43.

The first metal sheet 41 is connected to a battery of the terminal device, and the second metal sheet 42 is connected to a main board of the terminal device.

The relay 43 is in contact with and communicates with the first metal piece 41, and the normally closed contact of the relay 43 is in contact with the second metal piece 42.

A substrate 2 for generating a resistance signal when the inner surface of the housing 1 is contacted with a liquid.

And the mainboard is used for generating a pulse signal when the resistance signal is determined to accord with the preset signal.

And the driving circuit 3 is used for controlling the normally open contact of the relay to be switched on when the pulse signal is detected, so that the first metal sheet 41 and the second metal sheet 42 are switched from on connection to off connection.

In the present embodiment, the substrate 2 is disposed on the inner surface of the housing 1, and for example, the substrate 2 may be a narrow ring-like substrate (having a small notch), and specifically may be disposed on the inner surface having a certain distance with the sidewall of the housing 1, where the certain distance may be set according to the disposed position of the motherboard on the terminal device, so as to ensure the security of the motherboard. Taking a terminal device as an example of a mobile phone, a hole through which a camera is to be inserted is reserved on a shell of the mobile phone, so that, in order to detect whether liquid enters the camera, a substrate can be specifically arranged around the hole, namely, the substrate is arranged around the hole on the inner surface, which is close to the hole.

In addition, the drive circuit 3 and the support portion 4 may be provided on the housing 1. Specifically, the driving circuit 3 is connected to the relay 43 to control the normally open contact of the relay 43 to be turned on when the pulse signal is detected.

In the present embodiment, the first metal sheet 41 is connected to the battery of the terminal device, specifically, to the positive electrode of the battery of the terminal device, and for example, after the housing is closed with the main board of the terminal device, the first metal sheet 41 may be sunk into the positive electrode of the battery of the terminal device. The second metal sheet 42 is connected to the main board of the terminal device, and for example, after the housing is closed to the main board of the terminal device, the second metal sheet 42 may be connected to the main board of the terminal device. The first metal sheet 41 is in contact with and in communication with a relay 43 (specifically, an electromagnetic relay), that is, the first metal sheet 41 and one end of the relay 43 are fixedly connected to communicate the first metal sheet 41 and the relay 43. The second metal piece 42 is connected to a normally closed contact of the relay 43.

In the present application, the first metal sheet 41 and the second metal sheet 42 may be copper sheets.

The working principle of the embodiment is as follows: when the inner surface of the housing 1 is not contacted with liquid, the first metal sheet 41 and the relay 43 are communicated, the second metal sheet 42 and the relay 43 are communicated through the normally closed contact, at the moment, the first metal sheet 41 and the second metal sheet 42 are communicated through the relay 43, namely, the first metal sheet 41 and the second metal sheet 42 are both in a conducting state, so that the battery and the mainboard are communicated, and the terminal equipment normally works.

When the inner surface of the shell 1 contacts liquid, the substrate 2 generates a resistance signal, based on this, the mainboard generates a pulse signal when determining that the resistance signal conforms to a preset signal, wherein the preset signal is used for indicating that the inner surface of the shell 1 contacts the liquid, then, the driving circuit 3 controls the normally open contact of the relay 43 to be switched on when detecting the pulse signal, at this moment, the second metal sheet 42 is disconnected with the relay 43, so that the first metal sheet 41 is disconnected with the second metal sheet 42, so that the battery is disconnected with the mainboard, and therefore, the terminal equipment is immediately powered off and powered off.

After the terminal equipment is powered off, the driving circuit 3 has no pulse signal, the relay 43 returns to the normally closed state, so that the two copper sheets of the supporting part 4 are connected, and a user waits for pressing a start key to start the terminal equipment. During shutdown, a user can perform drying processing on the terminal device and then perform normal use.

The application provides a shell of terminal equipment, which comprises a shell, a substrate, a driving circuit and a supporting part, wherein the substrate is arranged on the inner surface of the shell, the supporting part comprises a first metal sheet, a second metal sheet and a relay, the first metal sheet is connected with a battery of the terminal equipment, the second metal sheet is connected with a mainboard of the terminal equipment, the relay is in contact and communication with the first metal sheet, a normally closed contact of the relay is in contact with the second metal sheet, on the basis of the situation, when the substrate is in contact with liquid on the inner surface of the shell, a resistance signal is generated, when the mainboard determines that the resistance signal accords with a preset signal, a pulse signal is generated, therefore, when the driving circuit detects the pulse signal, the normally open contact of the relay is controlled to be switched on, so that the conduction connection between the first metal sheet and the second metal sheet is switched off, namely, the first metal sheet is in open connection with the second metal sheet, correspondingly, the battery is disconnected with the mainboard, and the terminal equipment is shut down. This application is based on whether get into liquid among the substrate accurate detection terminal equipment in this casing, moreover, when getting into liquid among the detection terminal equipment, through first sheetmetal and second metal fragment open and be connected, can make terminal equipment shut down immediately to avoid terminal equipment to be damaged, ensured terminal equipment's security.

Fig. 3 is a schematic structural diagram of a housing of a terminal device according to a second embodiment of the present application, fig. 4 is a schematic structural diagram of a supporting portion according to the second embodiment of the present application, and fig. 5 is a schematic structural diagram of a circuit terminal according to the second embodiment of the present application, and as shown in fig. 3, fig. 4, and fig. 5, the housing includes:

The first metal sheet 41 is connected with a battery of the terminal device, and the second metal sheet is connected with a main board of the terminal device;

the relay 43 is in contact with and communicates with the first metal piece 41, and the normally closed contact 431 of the relay 43 is in contact with the second metal piece 42.

And the driving circuit 3 is used for controlling the normally open contact 432 of the relay 43 to be switched on when the pulse signal is detected, so that the first metal sheet 41 and the second metal sheet 42 are switched from on connection to off connection.

Optionally, the housing further includes: a resistance detection circuit 5; the resistance detection circuit 5 is connected to the substrate 2, and the resistance detection circuit 5 is connected to the main board.

And the resistance detection circuit 5 is used for converting the resistance signal into a voltage signal.

The main board is specifically used for determining a resistance value signal according to the voltage signal corresponding to the resistance signal and generating a pulse signal when the resistance value signal conforms to a preset signal.

Optionally, the housing further includes: a circuit terminal 6; a first terminal part of the circuit terminal 6 is connected with the resistance detection circuit 5, and a second terminal part of the circuit terminal 6 is connected with the driving circuit 3, wherein the first terminal part comprises an AD terminal port which is connected with a signal output end of the resistance detection circuit 3, the second terminal part comprises a GPIO terminal port which is connected with a signal input end of the driving circuit 6; each terminal port of the circuit terminal 6 is connected with the main board

Optionally, the resistance detection circuit 5 is connected to the substrate 2 by a wire 7.

Optionally, an insulating sheet 44 is disposed between the first metal sheet 41 and the second metal sheet 42.

Optionally, the support further comprises a base 45; the first metal piece 41, the second metal piece 42, the relay 43, and the insulating piece 44 are fixed to the base 45.

Optionally, an insulating layer 46 is disposed on predetermined portions of the outer surfaces of the first metal sheet 41 and the second metal sheet 42.

Optionally, a humidity sensitive membrane 8 is disposed on the substrate.

Alternatively, the substrate 2 is in contact with the edge of the inner surface of the housing 1.

In the present embodiment, as shown in fig. 3, the substrate 2 may be embedded at the bottom of the inner side of the housing 1, that is, in contact with the edge of the inner surface of the housing 1, wherein the substrate 2 may be a narrow substrate, and the substrate 2 may be covered with a humidity sensing film 8 made of a humidity sensing material, and whether there is liquid entering can be detected more accurately through the humidity sensing film 8. The substrate 2 is connected to the resistance detection circuit 5 through a wire 7. A first terminal port of the circuit terminal 6 is connected to the resistance detection circuit 5, a second terminal port of the circuit terminal 6 is connected to the main board, and a third terminal port of the circuit terminal 6 is connected to the drive circuit 3. The drive circuit 3 is connected to the support portion 4.

As shown in fig. 4, the supporting portion may be specifically the pillar shown in fig. 4, and the supporting portion 4 includes: the first metal sheet 41, the second metal sheet 42, the relay 43, the insulating sheet 44, the base 45, and the insulating layer 46, wherein the relay 43 includes a normally closed contact 431 and a normally open contact 432, the base 45 and the housing 1 may be manufactured as an integral structure, the shape of the base 45 may be a hollow cuboid or the like in addition to the hollow cuboid shown in fig. 4, which is not limited herein, but the base 45 should be thinner to ensure that the housing can be integrated with the main board of the terminal device. The base 45 is provided with an insulating sheet 44, wherein the insulating sheet 44 is perpendicular to the inner surface of the housing 1, that is, in the present viewing direction of fig. 3 and 4, both faces of the insulating sheet 44 are directed to the left and right. The two ends of the insulation sheet 44 are respectively provided with a first metal sheet 41 and a second metal sheet 42, the height of the insulation sheet 44 is slightly higher than the height of the first metal sheet 41 and the second metal sheet 42, wherein the first metal sheet 41 is fixedly connected with one end of the relay 43, and the second metal sheet 42 is connected with the normally closed contact 431 of the relay 43. An insulating layer 46 is provided on the outer surfaces of the first metal piece 41 and the second metal piece at a position lower than the first metal piece 41 and the second metal piece 42, and plays a role of insulation.

As shown in fig. 5, the circuit terminal 6 may specifically include a power VCC terminal port (a terminal port may also be referred to as a contact), a ground GND terminal port, a general input/output GPIO terminal port, and an analog-to-digital conversion AD terminal port, wherein the first terminal portion includes the VCC terminal port, the GND terminal port, and the AD terminal port, and the second terminal portion includes the VCC terminal port, the GND terminal port, and the GPIO terminal port. Specifically, VCC terminal mouth, GND terminal mouth, GPIO terminal mouth and AD terminal mouth all are connected with the mainboard, and VCC terminal mouth and the VCC terminal mouth on the mainboard of circuit terminal 6 are connected promptly, and the GND terminal mouth on the mainboard of circuit terminal 6 are connected, and GPIO terminal mouth on the circuit terminal 6 is connected with corresponding GPIO terminal mouth on the mainboard, and AD terminal mouth on the circuit terminal is connected with the AD terminal mouth on the mainboard. The VCC terminal ports on the circuit terminals 6 are also connected with the resistance detection circuit 5 and the drive circuit 3, respectively, and the GND terminal ports on the circuit terminals 6 are also connected with the resistance detection circuit 5 and the drive circuit 3, respectively, so as to supply power to the resistance detection circuit 5 and the drive circuit 3 through the VCC and GND terminal ports. The AD terminal port on the circuit terminal 6 is further connected with the signal output end of the resistance detection circuit 5, the GPIO terminal port on the circuit terminal 6 is further connected with the signal input end of the driving circuit 3, and the signal output end of the driving circuit 3 is connected with the relay 43.

The working principle of the embodiment is as follows: when the inner surface of the housing 1 is not in contact with liquid, the first metal sheet 41 and the relay 43 are communicated, and the second metal sheet 42 and the relay 43 are communicated through the normally closed contact 431, that is, the relay 43 is in a normally closed state, so that the first metal sheet 41 and the second metal sheet 42 of the supporting portion 4 are in a communicated state, and thus the battery anode connected with the first metal sheet 41 and the main board connected with the second metal sheet 42 are communicated, so that the terminal equipment is normally powered.

When liquid adsorbs on the wet membrane, the resistance on substrate 2 will change, substrate 2 generates the resistance signal this moment, resistance detection circuit 5 who is connected with substrate 2 next through wire 7, convert the resistance signal into voltage signal, then because resistance detection circuit 5's signal output part is connected with the AD terminal mouth on circuit terminal 6, and this AD terminal mouth on circuit terminal 6 still is connected with the mainboard, therefore this voltage signal is gathered to the AD terminal mouth on mainboard accessible circuit terminal 6, thereby the mainboard can be according to this voltage signal, confirm the resistance value signal, and when confirming that the resistance value signal accords with preset signal, generate pulse signal, wherein, preset signal can be used for instructing the internal surface of shell 1 to contact liquid. Then, because the GPIO terminal mouth on the circuit terminal 6 is connected with the mainboard, and this GPIO port on the circuit terminal 6 still is connected with drive circuit 3's signal input part, thereby drive circuit 3 accessible GPIO terminal mouth on the circuit terminal 6 detects the pulse signal that the mainboard generated, thereby drive circuit 3 is when detecting pulse signal, through the normally open contact switch-on of the last signal output part control relay 43 of drive circuit, thereby make first sheetmetal 41 and the second sheetmetal 42 disconnection on the supporting part 4, and then make the battery positive pole of being connected with first sheetmetal 41, and the mainboard disconnection of being connected with second sheetmetal 42, make terminal equipment outage shutdown immediately.

This embodiment is through setting up the wet membrane of feeling on the substrate to whether there is liquid to get into based on the perception that the wet membrane of feeling can be more accurate, and then has further ensured terminal equipment's security. In addition, the substrate is in contact with the edge of the inner surface of the shell, so that the situation that the mainboard in the terminal equipment is damaged due to liquid entering can be detected as soon as the liquid enters.

Fig. 6 is a schematic structural diagram of a terminal device according to a third embodiment of the present application, and as shown in fig. 6, a housing 601 according to any of the embodiments is disposed on the terminal device.

In addition, based on the housing of the terminal device provided by the present application, the present application provides a control method, which is applied to a processor in the terminal device, and the method includes:

the first step is as follows: and acquiring the current resistance value of the substrate.

For example, the resistance detection circuit may convert the current resistance value of the substrate into a voltage value, and the processor converts the voltage value after acquiring the voltage value, so as to obtain the current resistance value of the substrate.

The second step is as follows: and calculating the current resistance change rate of the substrate according to the current resistance value and a preset standard resistance value, wherein the standard resistance value is the resistance value of the substrate when the terminal equipment does not enter the liquid.

Specifically, the ratio of the current resistance value to the standard resistance value is the current resistance change rate of the substrate.

The third step: and if the current resistance change rate exceeds the preset resistivity threshold value, controlling the normally open contact of the relay to be switched on through the driving circuit so as to enable the first metal sheet to be connected with the second metal sheet.

Specifically, considering that the environmental humidity also affects the change of the substrate resistance, the environmental humidity can be calibrated before the terminal device leaves the factory. The specific operation steps are as follows: measuring the resistance value of the substrate under the normal use environment condition, then detaching the shell of the terminal equipment but keeping the electrical connection, placing the shell under the environment conditions with different humidity, recording the change rate a of the maximum resistance value of the substrate measured by a processor in the terminal equipment, and taking the up 5% of the change rate a as the resistivity threshold b for judging whether the terminal equipment has liquid inlet fault or not by considering the error.

In the present application, the first metal sheet and the second metal sheet may specifically be copper sheets.

The application is based on a housing for a terminal device, which housing comprises a housing, a substrate, a drive circuit and a support, wherein the substrate is arranged on the inner surface of the shell, the supporting part comprises a first metal sheet, a second metal sheet and a relay, the first metal sheet is connected with a battery of the terminal equipment, the second metal sheet is connected with a mainboard of the terminal equipment, the relay is contacted and communicated with the first metal sheet, the normally closed contact of the relay is contacted with the second metal sheet, based on the contact, by obtaining the current resistance value of the substrate and calculating the current resistance change rate of the substrate according to the current resistance value and the preset standard resistance value, wherein the standard resistance value is the resistance value of the substrate when the terminal equipment does not enter the liquid, if the current resistance change rate exceeds the preset resistivity threshold value, and the normally open contact of the relay is controlled to be switched on through the driving circuit, so that the first metal sheet is connected with the second metal sheet in an open mode. The terminal equipment can be immediately shut down, so that the terminal equipment is prevented from being damaged, and the safety of the terminal equipment is guaranteed.

The processor can specifically output the level of the port connected with the driving circuit to realize the control of the relay.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A housing for a terminal device, the housing comprising:

2. The housing of claim 1, further comprising: a resistance detection circuit; the resistance detection circuit is connected with the substrate, and the resistance detection circuit is connected with the mainboard;

3. The housing of claim 2, further comprising: a circuit terminal; the first terminal part of the circuit terminal is connected with the resistance detection circuit, and the second terminal part of the circuit terminal is connected with the driving circuit, wherein the first terminal part comprises an AD terminal port which is connected with a signal output end of the resistance detection circuit, the second terminal part comprises a GPIO terminal port which is connected with a signal input end of the driving circuit; and each terminal port of the circuit terminal is connected with the mainboard.

4. The housing of claim 2, wherein the resistance sensing circuit is connected to the substrate by a wire.

5. The housing of claim 1, wherein an insulating sheet is disposed between the first metal sheet and the second metal sheet.

6. The housing of claim 5, wherein the support further comprises a base; the first metal sheet, the second metal sheet, the relay and the insulating sheet are fixed on the base.

7. The housing of claim 5, wherein the first metal sheet and the second metal sheet have an insulating layer disposed on predetermined portions of outer surfaces thereof.

8. The housing according to any one of claims 1 to 7, wherein a moisture-sensitive film is provided on the substrate.

9. The housing of any of claims 1-7, wherein the substrate contacts an edge of an inner surface of the outer shell.

10. A terminal device, characterized in that the terminal device is provided with a housing according to any one of claims 1-9.