Terminal equipment and safety switch circuit thereof

Abstract

The utility model provides a terminal device and a safety switch circuit thereof, the safety switch circuit comprises a knob part, at least a part of the knob part is exposed out of a shell of the terminal device, the knob part is connected with a rotating shaft, a press-fit block is arranged outside the rotating shaft, the press-fit block rotates along with the rotation of the rotating shaft, and the press-fit block rotates along the axial direction of the rotating shaft. The press-fit block at least comprises two press-fit sections, and the central angles of the press-fit sections relative to the axis of the rotating shaft are not equal; the safety switch circuit further comprises more than two groups of connecting terminals, one group of connecting terminals comprises at least one fixed terminal and at least one movable terminal, and the fixed terminal and the movable terminal in the same group of connecting terminals are respectively connected to a data transmission line of a controlled device; wherein one press-fit section corresponds to one group of connecting terminals, and the press-fit sections can abut against the corresponding movable terminals, so that the movable terminals and the corresponding fixed terminals are in an open-circuit state. The terminal equipment is provided with the safety switch circuit. According to the utility model, the size of the terminal equipment can be reduced, and the privacy of a user is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a terminal device and a safety switch circuit used by the terminal device. Background Art

[0002] Electronic devices are commonly used in people's daily work and life. With the development of technology, most existing terminal devices are equipped with microphones, cameras, communication antennas, etc. Since microphones and cameras can obtain people's voices and images, there is a security risk of privacy leakage, and communication antennas can send personal privacy data. In order to protect personal privacy, some existing terminal devices allow users to turn off microphones, cameras or communication antennas.

[0003] However, most existing terminal devices use software to turn off microphones, cameras or communication antennas. For example, a software program is used to stop the processor from receiving data output by the microphone or camera, or a software program is used to stop the operation of an analog-to-digital converter connected to the microphone or image sensor. However, this method relies on software programs. Once the software program runs abnormally, it often causes the microphone, camera or communication antenna to not be turned off, which still affects personal privacy.

[0004] For this purpose, an existing terminal device is provided with a mechanical switch on the shell, and the mechanical switch is connected to the power supply of devices such as microphones and cameras. The user disconnects the power supply of the microphone and camera by turning the mechanical switch. However, the controlled devices that the user needs to turn off are different in different scenarios. For example, in one scenario, the user only wants to turn off the microphone, and in another scenario, the user wants to turn off the microphone and the camera at the same time. If the above scheme is adopted, the mechanical switch needs to have multiple different gears. When the mechanical switch is in the first gear, each controlled device is in a power-on state, that is, each controlled device works normally. When the mechanical switch is in the second gear, only the microphone is in a power-off state, and when the mechanical switch is in the third gear, only the microphone and the image sensor are in a power-off state. This method requires a long track to be set on the shell of the terminal device to facilitate the sliding of the mechanical switch between different gears, resulting in a large volume of the shell, which is not conducive to the miniaturization of the terminal device. Summary of the invention

[0005] The first object of the utility model is to provide a safety switch circuit of a terminal device which can flexibly shut down different types of controlled devices and has a small volume.

[0006] The second object of the utility model is to provide a terminal device having the above safety switch circuit.

[0007] To achieve the first purpose of the utility model, the safety switch circuit of the terminal device provided by the utility model includes a knob part, at least a part of which is exposed from the shell of the terminal device: the knob part is connected to a rotating shaft, a pressing block is arranged outside the rotating shaft, the pressing block rotates with the rotation of the rotating shaft, and along the axial direction of the rotating shaft, the pressing block includes at least two pressing sections, and the central angles of each pressing section relative to the axis of the rotating shaft are not equal; the safety switch circuit also includes more than two groups of connecting terminals, one group of connecting terminals includes at least one fixed terminal and at least one movable terminal, and the fixed terminals and the movable terminals in the same group of connecting terminals are respectively connected to the data transmission line of a controlled device; wherein, one pressing section corresponds to a group of connecting terminals, and the pressing section can abut against the corresponding movable terminal so that the movable terminal and the corresponding fixed terminal are in an open circuit state or a connected state.

[0008] It can be seen from the above scheme that when the user pushes the knob to rotate, the shaft rotates accordingly and drives the pressing block to rotate. Since the pressing block has multiple pressing sections and different pressing sections correspond to different central angles, that is, when the pressing block rotates to different angles, the movable terminals abutted are different, so that the electrical connection relationship of different controlled devices changes, thereby achieving the purpose of changing the on and off states of different controlled devices. Since there is no need to set a long slide rail or a toggle mechanical switch on the shell of the terminal device, only an area for exposing the knob part is required, and the area occupied on the shell is small, which can reduce the volume of the terminal device.

[0009] A preferred solution is that the central angle of each pressing section relative to the axis of the rotating shaft is less than 360°.

[0010] It can be seen that at least a part of the area on the pressing block will not abut against the movable terminals, that is, when the knob part is rotated to a specific angle, the movable terminals are connected to the fixed terminals. At this time, the circuits of the controlled devices are in a connected state, meeting the daily use needs of users.

[0011] A further solution is that the number of the pressing sections is three, and the central angles of the three pressing sections relative to the axis of the rotating shaft are 270°, 180° and 90° respectively.

[0012] It can be seen that the central angles corresponding to the various pressing sections are all different, and the difference is 90°, which can facilitate the user to turn the knob to flexibly control the on and off states of various controlled components.

[0013] A further solution is that the safety switch circuit is provided with a terminal mounting seat, the fixed terminal is fixedly mounted on the terminal mounting seat, the movable terminal is arranged below the fixed terminal, and when the movable terminal is not abutted by the pressing block, the movable terminal is electrically connected to the fixed terminal.

[0014] It can be seen that the fixed terminals and movable terminals are installed through the terminal mounting seat, so that the positions of the connecting terminals are relatively fixed, especially the positions of the corresponding fixed terminals and movable terminals in the same group of terminals are relatively fixed and correspond one to one.

[0015] A further solution is that a reset member is provided below the movable terminal, and the reset member drives the movable terminal to move toward the fixed terminal.

[0016] It can be seen that when the pressing block does not abut against the movable terminal, the movable terminal can return to the initial state under the drive of the reset member. In this way, the movable terminal can be reset. However, when the user needs to restore the operation of the controlled device, he only needs to turn the knob to a specific position, and the movable terminal can be restored to the state of being connected to the fixed terminal under the drive of the reset member.

[0017] A further solution is that the safety switch circuit is also provided with an indication connection terminal, which includes an active indication connection terminal and a fixed indication connection terminal, and the active indication connection terminal and the active terminal are simultaneously abutted by a pressing block. When the active indication connection terminal is abutted by the pressing block, the active indication connection terminal is electrically connected to the fixed indication connection terminal, and the indication connection terminal is connected to the indicating device.

[0018] It can be seen that when the movable terminal is abutted by the pressing block, the movable indication connection terminal will be connected to the fixed indication connection terminal. In this way, the indication device connected to the indication connection terminal will send an indication signal, such as emitting light or making a sound, to prompt the user of the change in the working status of the current controlled device, so that the user can timely understand the current working status of each controlled device.

[0019] A further solution is that a pair of indicating connection terminals corresponds to a group of connection terminals.

[0020] In this way, the number of indicating connecting terminals corresponding to each group of connecting terminals is only one pair, that is, no matter how many fixed connecting terminals there are in a group of connecting terminals, only one pair of indicating connecting terminals is provided, thereby reducing the production cost of the safety switch circuit.

[0021] To achieve the second objective mentioned above, the terminal device provided by the utility model includes a housing, on which an indicator device and a display screen are provided, and the terminal device is provided with at least two controlled devices; the terminal device is also provided with the above-mentioned safety switch circuit.

[0022] A preferred solution is that the controlled device includes at least two of the following: a microphone, a speaker, a camera, and a communication antenna.

[0023] It can be seen from the above scheme that for devices used to acquire and transmit data, such as microphones, speakers, cameras, and communication antennas, by setting a safety switch circuit on their communication lines, users can flexibly adjust the working status of each controlled device.

[0024] A further solution is that the central angles of the pressing section corresponding to the camera, the pressing section corresponding to the speaker, and the pressing section corresponding to the communication antenna relative to the axis of the rotating shaft decrease successively.

[0025] Since users usually need to turn off the camera and microphone, the operation of turning off the speaker is not frequent, and the operation of turning off the communication antenna is the least, therefore, setting the central angles corresponding to the pressing sections of the above three types of controlled devices to decrease in sequence can facilitate users to turn off various types of controlled devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural block diagram of a microphone and speaker control circuit of a terminal device embodiment of the utility model.

[0027] Figure 2 It is a structural block diagram of a camera control circuit of a terminal device embodiment of the present utility model.

[0028] Figure 3 It is a structural block diagram of a communication antenna control circuit of a terminal device embodiment of the present utility model.

[0029] Figure 4 It is a structural diagram of an embodiment of a safety switch circuit of a terminal device of the utility model.

[0030] Figure 5 It is a structural exploded view of an embodiment of a safety switch circuit of a terminal device of the utility model.

[0031] Figure 6 yes Figure 5 A partial enlarged view of .

[0032] Figure 7 It is a structural diagram of a compression block of an embodiment of a safety switch circuit of a terminal device of the utility model.

[0033] Figure 8 This is a structural diagram of a safety switch circuit embodiment of a terminal device of the utility model, in which a pressing block is hidden.

[0034] Fig. 9 This is a structural exploded view of a safety switch circuit embodiment of a terminal device of the utility model, in which a pressing block is hidden.

[0035] Fig.10 This is a structural exploded view of the embodiment of the safety switch circuit of the terminal device of the utility model, in which the pressing block, the fixed terminal and the indicating connection terminal are hidden.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0037] The safety switch circuit of the terminal device of the utility model is used on the terminal device, and the terminal device includes electronic devices such as smart phones, laptops, and tablet computers. In addition, more than two controlled devices are arranged on the terminal device. The controlled devices of the utility model include devices that can obtain voice and images, and also include devices for wireless data transmission, such as microphones, cameras, speakers, communication antennas, etc.

[0038] Terminal device embodiment:

[0039] The terminal device of this embodiment has a housing, a display screen is provided on the front of the terminal device, and a microphone and a camera are also provided on the terminal device. Preferably, a camera is provided on the front of the terminal device, and another camera is also provided on the back of the terminal device. In addition, a microphone and a speaker are provided on the terminal device. The terminal device of this embodiment is a terminal device that can communicate wirelessly, so the terminal device is also provided with one or more communication antennas. The terminal device can be provided with a 4G communication module or a 5G communication module, and is also provided with a WIFI module, a Bluetooth module, etc. These communication modules all need to use a communication antenna to communicate wirelessly with external devices.

[0040] See also Figure 1 The terminal device is provided with a central processor 10. The voice signal collected by the microphone 20 is output to the voice encoding module 22 after passing through the analog-to-digital conversion module 21, and then output to the central processor 10. The digital signal output by the central processor 10 is output to the digital-to-analog conversion module 26 after passing through the voice decoding module 25, and then output to the speaker 27.

[0041] In order to control the operation of the microphone 20, a safety switch circuit 50 is provided on the terminal device. Figure 1 As shown, the safety switch circuit 50 is arranged between the microphone 20 and the analog-to-digital conversion module 21, that is, arranged on the data transmission line of the microphone 20. When the safety switch circuit 50 is in the disconnected state, the voice signal collected by the microphone 20 cannot be transmitted to the analog-to-digital conversion module 21, so that the central processor 10 will not be able to receive the signal from the microphone 20, thereby avoiding undesirable recording behavior.

[0042] Since the working principle of the speaker 27 is opposite to that of the microphone 20, the speaker 27 can also be used as a recording device. For this purpose, a safety switch circuit 50 is also provided between the digital-to-analog conversion module 26 and the speaker 27. When the safety switch circuit 50 is in the disconnected state, the circuit between the digital-to-analog conversion module 26 and the speaker 27 is in an open circuit state, thereby preventing the speaker 27 from collecting voice signals.

[0043] See also Figure 2 The image sensor 30 in the camera collects image signals to the image processor 32. The image processor 32 can filter and reduce noise on the image signals, and store the processed images in the memory 33. In this embodiment, a safety switch circuit 50 is provided between the image sensor 30 and the image processor 32. When the safety switch circuit 50 is in the disconnected state, the signal collected by the image sensor 30 cannot be transmitted to the image processor 32, so that undesirable recording behavior can be avoided.

[0044] See also Figure 3 The signal of the communication antenna 30 can be transmitted to the central processing unit 10 through the signal receiving / transmitting module 41. A safety switch circuit 50 is provided between the signal of the communication antenna 30 and the signal receiving / transmitting module 41. When the safety switch circuit 50 is in an open circuit state, the communication antenna 40 and the central processing unit 10 cannot communicate directly. Therefore, the central processing unit 10 can avoid transmitting data that it does not want to share to an external terminal device through the communication antenna 40, thereby avoiding data leakage.

[0045] In this embodiment, the number of communication antennas 40 may be one or more. For example, the communication antenna 40 may include a GPS antenna, a Bluetooth antenna, a WIFI antenna, an NFC antenna, an FM radio antenna, and the like.

[0046] Safety switch circuit embodiment:

[0047] See also Figure 4 and Figure 5 The safety switch circuit has a terminal mounting seat 51, on which a plurality of terminals are mounted, including fixed terminals, movable terminals and indicating connection terminals, wherein the fixed terminals are fixed on the top wall 52 of the terminal mounting seat 51, and the fixed terminals cannot move relative to the terminal mounting seat 51, while the movable terminals are mounted in the terminal mounting seat 51, and the movable terminals can move relative to the terminal mounting seat 51. In the initial state, the fixed terminals are connected to the movable terminals.

[0048] In addition, a pressing assembly 60 is provided on one side of the terminal mounting seat 51. The pressing assembly 60 has a rotating shaft 62. A knob portion 61 is provided at one end of the rotating shaft 62. A portion of the knob portion 61 is exposed on the housing of the terminal device. A hand pattern is provided on the periphery of the knob portion 61. The user can push the knob portion 61 to rotate through the hand pattern. Since the knob portion 61 is fixedly connected to the rotating shaft 62, when the knob portion 61 rotates, the rotating shaft 62 will rotate accordingly.

[0049] The two ends of the rotating shaft 62 are supported on the two side plates 54 and 56 of the terminal mounting seat 51. For example, a shaft hole 55 is provided on the side plate 54, and a bearing is sleeved in the shaft hole 55. The first end of the rotating shaft 62 passes through the bearing and is supported on the side plate 54. A shaft hole 57 is also provided on the side plate 56, and the second end of the rotating shaft 62 passes through the shaft hole 57. In addition, as Figure 6 As shown, a fan-shaped limit piece 67 is provided at the end of the second end of the rotating shaft 62, and a fan-shaped limit portion 58 is also provided on the shaft hole 57. When the rotating shaft 62 passes through the shaft hole 57, the limit piece 67 cooperates with the limit portion 58 to limit the rotation angle of the rotating shaft 62 and avoid the rotating angle of the rotating shaft 62 being too large.

[0050] In addition, a pressing block 63 is provided outside the rotating shaft 62, and the pressing block 63 is located between the side plate 54 and the side plate 56. The pressing block 63 can abut against the movable terminal. When the movable terminal is abutted by the pressing block 63, the movable terminal will rotate downward, so that the fixed terminal is disconnected from the movable terminal.

[0051] Since the safety switch circuit needs to control the working states of various types of controlled devices, and the on and off states of different controlled devices may be different, corresponding connection terminals need to be set for different controlled devices. Therefore, the connection terminals of this embodiment are divided into three groups, and correspondingly, the pressing block 63 is also correspondingly set with three sections. Figure 7 , the pressing block 63 includes three pressing sections, namely pressing sections 64, 65 and 66, wherein pressing section 64 corresponds to the first group of connection terminals, pressing section 65 corresponds to the second group of connection terminals, and pressing section 66 corresponds to the third group of connection terminals. Of course, in other embodiments, the number of groups of connection terminals can be increased or decreased according to actual conditions, and accordingly, the number of pressing sections should also be increased or decreased accordingly. Therefore, the number of pressing sections is equal to the number of groups of connection terminals, and each pressing section corresponds to a group of connection terminals.

[0052] from Figure 7It can be seen that each pressing section 64, 65, 66 is not a full circle. With the axis of the rotating shaft 62 as the center, the central angle corresponding to each pressing section 64, 65, 66 does not exceed 360°. Preferably, the central angle corresponding to the pressing section 64 is 270°, the central angle corresponding to the pressing section 65 is 180°, and the central angle corresponding to the pressing section 66 is 90°, that is, the central angles corresponding to the three pressing sections decrease successively.

[0053] See also Figure 8 and Fig. 9 The connection terminals of this embodiment are divided into three groups, wherein the first group of connection terminals includes three fixed terminals 79 and three movable terminals 89, and also includes a pair of indication connection terminals, wherein the pair of indication connection terminals includes a fixed indication connection terminal 99 and a movable indication connection terminal 97, wherein the movable indication connection terminal 97 and the movable terminal 89 are both hinged on the hinge shaft 80, and in the same group of connection terminals, the movable indication connection terminal 97 is arranged adjacent to the movable terminal 89, when the movable terminal 89 is abutted by the pressing section 64, the movable indication connection terminal 97 is also abutted by the pressing section 64 and rotates downward. The fixed indication connection terminal 99 is located directly below the movable indication connection terminal 97, and when the movable indication connection terminal 97 is abutted by the pressing section 64, the movable indication connection terminal 97 moves downward and is electrically connected to the fixed indication connection terminal 99.

[0054] The first group of connection terminals is used to control the working state of the microphone 20 and the two cameras, namely the image sensor 30. Among them, a fixed terminal 79 and a movable terminal 89 are connected to the data transmission line of the controlled device. When the fixed terminal 79 and the movable terminal 89 are disconnected, the controlled device will not be able to achieve effective data transmission. At the same time, the active indication connection terminal 97 is electrically connected to the fixed indication connection terminal 99, and the indicator light is on. The first group of connection terminals corresponds to the pressing section 64, that is, the central angle of the pressing section 64 corresponding to the first group of connection terminals is the largest.

[0055] In the first group of connection terminals, the number of fixed terminals 79 and movable terminals 89 are both three, but the number of indicating connection terminals is only one pair, that is, only one fixed indicating connection terminal 99 and movable indicating connection terminal 97 are provided, and only one indicating device is provided.

[0056] The second group of connection terminals includes a fixed terminal 78 and a movable terminal 88, and also includes a pair of indication connection terminals, the pair of indication connection terminals includes a fixed indication connection terminal 98 and a movable indication connection terminal 96, wherein the movable indication connection terminal 98 and the movable terminal 88 are both hinged on the hinge shaft 80, and in the same group of connection terminals, the movable indication connection terminal 98 is arranged adjacent to the movable terminal 88, and when the movable terminal 88 is abutted by the pressing section 65, the movable indication connection terminal 98 is also abutted by the pressing section 65 and rotated downward. The fixed terminal 78 and the movable terminal 88 are connected to the data transmission line of the speaker 27. In addition, the second group of connection terminals corresponds to the pressing section 65, that is, the center angle of the pressing section 65 corresponding to the second group of connection terminals is smaller than the center angle of the pressing section 64 corresponding to the first group of connection terminals.

[0057] The third group of connecting terminals includes seven fixed terminals 70 and seven movable terminals 81, and also includes a pair of indicating connecting terminals, including a fixed indicating connecting terminal 90 and a movable indicating connecting terminal 92, wherein the movable indicating connecting terminal 92 and the movable terminal 81 are both hinged on the hinge shaft 80, and in the same group of connecting terminals, the movable indicating connecting terminal 92 is arranged adjacent to the movable terminal 81, and when the movable terminal 81 is abutted by the pressing section 66, the movable indicating connecting terminal 92 is also abutted by the pressing section 66 and rotates downward.

[0058] The fixed terminal 70 and the movable terminal 81 are connected to the data transmission line of the communication antenna 40. In addition, the third group of connection terminals corresponds to the pressing section 66, that is, the central angle of the pressing section 66 corresponding to the third group of connection terminals is the smallest. Since there are multiple communication antennas 40, the third group of connection terminals has the largest number. Preferably, the number of fixed terminals and movable terminals of the third group of connection terminals is equal to the number of communication antennas 40, or the number of fixed terminals and movable terminals is greater than the number of communication antennas 40.

[0059] The structure of each fixed terminal is the same, and the following description will be made taking the fixed terminal 70 as an example. Fig. 9 A mounting hole 53 is provided on the top wall 52 of the terminal mounting seat 51, and a through hole is correspondingly provided on the fixed terminal 70. The screw 72 passes through the through hole and the mounting hole 53 on the fixed terminal 70, thereby fixing the fixed terminal 70 on the top wall 52. In addition, the fixed terminal 70 is bent, and the free end of the fixed terminal 70 is bent downward and can contact the movable terminal 81. The end of the fixed terminal 70 is also connected to a cable 71, and the cable 71 can be connected to the communication antenna 40.

[0060] See also Fig.10, multiple movable terminals 81, 88, 89 are hinged on a hinge shaft 80, and the two ends of the hinge shaft 80 are respectively fixed on the mounting member 82 and the mounting member 85. The mounting member 82 can be fixed on the side plate 54 by screws. The middle part of the mounting member 82 is provided with a positioning rib 83, and the side plate 54 is provided with a positioning groove 84. When the mounting member 82 is installed on the side plate 54, the positioning rib 83 is installed in the positioning groove 84, thereby realizing the positioning of the mounting member 82 and the side plate 54. Correspondingly, the mounting member 85 can be fixed on the side plate 56 by screws. The middle part of the mounting member 85 is provided with a positioning rib 86, and the side plate 56 is provided with a positioning groove 87. When the mounting member 85 is installed on the side plate 56, the positioning rib 86 is installed in the positioning groove 87, thereby realizing the positioning of the mounting member 85 and the side plate 56.

[0061] A plurality of movable terminals 81, 88, 89 are respectively installed below the corresponding fixed terminals 70, 78, 79. Preferably, each fixed terminal 70, 78, 79 has a corresponding movable terminal 81, 88, 89. Of course, the number of movable terminals can be more than the number of fixed terminals. Fig.10 The figure shows the position of each movable terminal 81, 88, 89 in the initial state. When the movable terminal is abutted by the corresponding pressing section, the movable terminal 81, 88, 89 will rotate downward around the hinge shaft 80. At this time, the movable terminal will be separated from the corresponding fixed terminal, and the movable terminal and the fixed terminal are in a disconnected state.

[0062] Since each pressing section is not a full circle, when the pressing block 63 rotates to the missing part, the movable terminals 81, 88, 89 need to be restored to their initial positions. To this end, a reset member needs to be provided below each movable terminal 81, 88, 89. For example, the reset member can be a compression spring, which can provide an upward reset force for each movable terminal 81, 88, 89, so that the movable terminal moves toward the direction close to the fixed terminal. Alternatively, the reset member can be a torsion spring.

[0063] See you later Fig. 9 Each group of connection terminals is provided with a fixed indication connection terminal and a movable indication connection terminal. For example, the third group of connection terminals includes a fixed indication connection terminal 90, which is located below the corresponding movable indication connection terminal 92. When the movable indication connection terminal 92 is abutted by the pressing section 66 and moves downward, it is connected with the corresponding fixed indication connection terminal 90. A mounting hole 95 is provided on the bottom wall of the terminal mounting seat 51, and the fixed indication connection terminal 90 is fixed to the bottom wall of the terminal mounting seat 51 by two screws 91.

[0064] In addition, a pair of indication connection terminals are also connected to an indication device, which may be an LED light or a buzzer. When the fixed indication connection terminal 90 is in contact with and electrically connected to the active indication connection terminal 92, the indication device is powered on and operates, and indicates the current working status of each controlled device by emitting light or making sound, so that the user can know whether each controlled device is already in a non-working state.

[0065] In this embodiment, the microphone 20 and the two cameras correspond to the pressing section 64, which has the largest central angle, while the communication antenna 40 corresponds to the pressing section 66, which has the smallest central angle, and the speaker 27 corresponds to the pressing section 65, whose central angle is smaller than the pressing section 64 but larger than the pressing section 66. In the initial state, each active terminal is not abutted by the pressing block 63, and each controlled device can transmit data normally. The user can take pictures, record videos, and record audio through the terminal device, and can transmit data.

[0066] When the user does not want the terminal device to record or record audio, the user can push the knob 61 exposed on the housing and drive the shaft 62 to rotate, so that the pressing block 63 rotates. For example, after rotating 90 degrees, the pressing section 64 abuts against the movable terminal 89. At this time, the fixed terminal 79 is disconnected from the movable terminal 89, and the microphone and the two cameras will not be able to transmit data. However, at this time, the pressing sections 65 and 66 do not abut the corresponding movable terminals, and the speaker 27 and the communication antenna 40 can still work.

[0067] When the user continues to push the knob 61 to rotate, for example, after rotating it 90 degrees again, the pressing section 64 keeps contacting the movable terminal 89, and the pressing section 65 contacts the movable terminal 88. At this time, the fixed terminal 78 is disconnected from the movable terminal 88, and the speaker 27 cannot transmit data. However, at this time, the pressing section 66 does not contact the corresponding movable terminal, and the communication antenna 40 can still work.

[0068] When the user continues to push the knob 61 to rotate, for example, after rotating it 90° again, the pressing section 64 keeps contacting the movable terminal 89, the pressing section 65 also keeps contacting the movable terminal 88, and the pressing section 66 contacts the movable terminal 81. At this time, the fixed terminal 70 is also disconnected from the movable terminal 81, and the communication antenna 40 cannot transmit data. At this point, all controlled devices cannot transmit data.

[0069] When the user needs to use each controlled device normally, he can push the knob part 61 in the opposite direction. Preferably, when the limiter 67 abuts against the limiter 58, the safety switch circuit is in the initial state, that is, the pressing block 63 does not abut against any movable terminal, so that the user can determine whether each controlled device is in the initial state by pushing the knob part 61 to a position where it cannot rotate.

[0070] It can be seen that the terminal device shell does not need to be provided with a long slide rail, nor does it need to be provided with a toggle mechanical switch. It only needs to be provided with an area for realizing the exposure of the knob part. The area occupied on the shell is small, which can reduce the size of the terminal device. In addition, the user can flexibly control the working state of each controlled device according to the needs of the use scenario, which can well protect personal privacy.

[0071] In addition, in the present embodiment, there are three pressing sections. The first pressing section 64 starts pressing from greater than 0°, and changes the closed state of the first group of safety switches corresponding to the pressing section 64 to 270°; the second pressing section 65 starts pressing from greater than 90°, and changes the closed state of the second group of safety switches corresponding to the pressing section 65 to 270°; the third pressing section 66 starts pressing from greater than 180°, and changes the closed state of the third group of safety switches corresponding to the pressing section 66 to 270°. The starting angles of the three pressing sections differ by 90°, and can also be set to other angles such as 45°, 36°, etc. Each pressing section can also be set to be non-continuous in the circumferential direction. For example, a pressing block is set between 0° and 90°, there is no pressing block between 90° and 180°, there is a pressing block between 180° and 270°, and there is no pressing block between 270° and 360°. Through the above structure, the state of the safety switch is different at different angles. Similarly, other pressing sections can also adopt similar structures and have similar settings. At different angles, the closing states of the safety switches corresponding to the pressing sections have different combinations, which can easily realize diversified control of various controlled devices of the terminal equipment and better meet the needs of different situations.

[0072] In the above embodiment, in the initial state, each active terminal is not abutted by the pressing block 63, and each controlled device can perform data transmission normally, that is, the microphone and the camera can be used normally. In other embodiments, the fixed terminal can also be set below the active terminal, so that in the initial state, the fixed terminal and the active terminal are not connected, that is, the microphone and the camera are in a non-operating state. The user needs to rotate the knob to drive the pressing block to rotate so that the active part contacts the fixed part, and the microphone and the camera will enter the working state.

[0073] In addition, the number of the pressing sections of the pressing block can also be set to more sections according to actual conditions, for example, to four sections, five sections, or six sections.

[0074] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safety switch circuit of a terminal device, comprising a knob portion, at least a portion of which is exposed outside a housing of the terminal device: Features: The knob is connected to a rotating shaft, and a pressing block is arranged outside the rotating shaft. The pressing block rotates with the rotation of the rotating shaft, and along the axial direction of the rotating shaft, the pressing block includes at least two pressing sections, and the central angles of the pressing sections relative to the axis of the rotating shaft are not equal; The safety switch circuit also includes more than two groups of connection terminals, one group of the connection terminals includes at least one fixed terminal and at least one movable terminal, and the fixed terminal and the movable terminal in the same group of the connection terminals are respectively connected to a data transmission line of a controlled device; Among them, one pressing section corresponds to a group of connecting terminals, and the pressing section can abut against the corresponding movable terminal so that the movable terminal and the corresponding fixed terminal are in an open circuit state or a connected state.

2. The safety switch circuit of the terminal device according to claim 1, characterized in that: The central angle of each pressing section relative to the axis of the rotating shaft is less than 360°.

3. The safety switch circuit of the terminal device according to claim 2, characterized in that: The number of the pressing sections is three, and the central angles of the three pressing sections relative to the axis of the rotating shaft are 270°, 180° and 90° respectively.

4. The safety switch circuit of the terminal device according to any one of claims 1 to 3, characterized in that: The safety switch circuit is provided with a terminal mounting seat, the fixed terminal is fixedly mounted on the terminal mounting seat, the movable terminal is arranged below the fixed terminal, and when the movable terminal is not abutted by the pressing block, the movable terminal is electrically connected to the fixed terminal.

5. The safety switch circuit of the terminal device according to claim 4, characterized in that: A reset member is arranged below the movable terminal, and the reset member drives the movable terminal to move toward the fixed terminal.

6. The safety switch circuit of the terminal device according to any one of claims 1 to 3, characterized in that: The safety switch circuit is also provided with an indication connection terminal, which includes a movable indication connection terminal and a fixed indication connection terminal. The movable indication connection terminal and the movable terminal are simultaneously abutted by the pressing block. When the movable indication connection terminal is abutted by the pressing block, the movable indication connection terminal is electrically connected to the fixed indication connection terminal, and the indication connection terminal is connected to the indication device.

7. The safety switch circuit of the terminal device according to claim 6, characterized in that: A pair of the indication connection terminals corresponds to a group of the connection terminals.

8. A terminal device, comprising a housing, on which an indicator device and a display screen are arranged, and the terminal device is provided with at least two controlled devices; It is characterized in that The terminal device is provided with the safety switch circuit according to any one of claims 1 to 7.

9. The terminal device according to claim 8, characterized in that: The controlled components include at least two of the following: a microphone, a speaker, a camera, and a communication antenna.

10. The terminal device according to claim 9, characterized in that: The central angles of the pressing section corresponding to the camera, the pressing section corresponding to the speaker, and the pressing section corresponding to the communication antenna relative to the axis of the rotating shaft decrease in sequence.

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