Sliding cover back clip

Abstract

The utility model discloses a slip cover back splint which comprises an equipment host with an alcohol detection function, the equipment host can be matched with a mobile terminal (1) for use, and the mobile terminal (1) and the equipment host carry out signal transmission through NFC (Near Field Communication); the upward sliding mechanism is used for installing a mobile terminal (1), the upward sliding mechanism and the equipment host are assembled in a sliding mode, and after the upward sliding mechanism slides upwards relative to the equipment host, the camera shooting end of the mobile terminal (1) is exposed, and a shooting view field is obtained. The mobile terminal is provided with the upward sliding mechanism, the camera of the mobile terminal can be exposed through upward sliding when needed, the use of the camera is not affected, the annular antenna completely covers the NFC emission area of the mobile terminal, and an overlapped and crossed antenna radiation range is formed through the annular antenna, so that when the mobile terminal carries out data transmission or receiving, the mobile terminal is not influenced by the antenna radiation range. And accurate transmission and reception of data can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of wine testing instruments, in particular to a sliding cover back clip. Background Art

[0002] In modern society, alcohol detectors play a vital role in many occasions, especially in traffic safety and workplace safety. Currently, alcohol detection devices on the market are usually used independently, with single functions and poor compatibility with modern communication devices such as smartphones. With the development of smartphone camera technology, more and more functions can be realized through mobile phones, such as scanning and image processing. In order to make full use of these technologies to improve the functional limitations of traditional alcohol detectors, a solution that can be closely integrated with smartphones is needed.

[0003] However, there is a significant limitation in the design of existing back-clip alcohol detectors: when the alcohol detector is used as a mobile phone back clip, the fixed structure of the back clip often partially blocks the camera of the mobile phone. This occlusion not only limits the use of the camera, but also becomes a prominent problem when the camera is needed for facial recognition or image data capture to assist alcohol detection analysis. For example, some advanced alcohol detection systems may need to capture the user's facial image through the camera for identity verification or emotion analysis to increase the accuracy of detection and prevent fraud. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a sliding cover back clip, which can effectively solve the deficiencies in the prior art through an upward sliding mechanism.

[0005] The utility model is realized by the following technical scheme: a sliding cover back clip, comprising:

[0006] A device host with a wine detection function, which can be used in conjunction with a mobile terminal, and the mobile terminal and the device host perform signal transmission via NFC;

[0007] An upward sliding mechanism is used to install the mobile terminal, and the upward sliding mechanism is slidably assembled with the device host. By sliding the upward sliding mechanism relative to the device host, the camera end of the mobile terminal is exposed to obtain a shooting field of view;

[0008] The loop antenna is installed in the sliding mechanism, and the loop antenna covers the NFC transmission area of ​​the mobile terminal, and the loop antenna forms overlapping and intersecting antenna radiation ranges.

[0009] As a preferred technical solution, the sliding mechanism includes a sliding cover upper shell and a sliding cover lower shell, the sliding cover upper shell and the sliding cover lower shell are assembled with each other, and the loop antenna is arranged in the antenna installation position formed between the sliding cover upper shell and the sliding cover lower shell.

[0010] As a preferred technical solution, the middle of the ring antenna is hollowed out and a wireless charging coil is installed. The wireless charging coil is connected to the battery and the mainboard in the device host through a soft cable. The mobile terminal is wirelessly charged through the wireless charging coil, and the mainboard is connected to a charging cable.

[0011] As a preferred technical solution, an upper clamping piece is slidably installed on one side of the sliding cover upper shell, and a lower clamping piece is installed on the sliding cover upper shell away from the side of the upper clamping piece through an elastic reset mechanism, a terminal installation position is formed between the upper clamping piece and the lower clamping piece, and the mobile terminal is clamped in the terminal installation position, and a locking piece is installed at the bottom of the upper clamping piece, and the upper clamping piece is fixed by the locking piece.

[0012] As a preferred technical solution, the elastic reset mechanism includes a reset spring, a guide column and a spring clamping nut, one end of the guide column is connected and assembled with the upper shell of the sliding cover and the lower shell of the sliding cover, and the other end is threadedly connected with the spring clamping nut, the reset spring is sleeved on the guide column, one side of the reset spring is in contact with the end face of the spring clamping nut, and the other side of the reset spring is in contact with the inner wall of the spring installation groove, the guide column has a spring clamping nut on one side extending into the lower clamping piece, and when the lower clamping piece is pushed or pulled, the reset spring is compressed;

[0013] A pull-out slide is respectively arranged on both sides of the upper shell of the sliding cover, and a lock buckle is respectively arranged on both sides of the locking member. The lock buckle extends into the pull-out slide, and both sides of the upper clamping member are slidably installed in the pull-out slide. A plurality of buckle grooves are respectively arranged on both sides of the upper clamping member. The lock buckle is buckled into the buckle grooves in different length directions to complete the position adjustment of the upper clamping member on the upper shell of the sliding cover.

[0014] As a preferred technical solution, an opening window is provided on the upper and lower shells of the sliding cover at a position corresponding to the camera end of the mobile terminal. When the upper sliding mechanism slides up, the opening window is exposed. A touch screen is provided on the device host facing the opening window. When the mobile terminal is not installed, the touch screen is exposed through the opening window, and the touch screen is electrically connected to the main board.

[0015] As a preferred technical solution, a label is provided on the upper sliding cover at a position corresponding to the wireless charging coil, a slide rail is fixedly installed on the device host corresponding to the lower sliding cover, and the lower sliding cover is slidably installed on the slide rail.

[0016] As a preferred technical solution, a mounting frame is installed at the top position of the main body of the device, a camera and a scanning head are installed on the mounting frame, and a front lens is installed at the outer end of the mounting frame;

[0017] A blowing port is also provided on the device host located on the side of the camera and the scanning head, and a nozzle cover is installed at the blowing port position. The output end of the nozzle cover is connected to the nozzle passage, and a blowing motor is installed at the output end of the nozzle passage. The signal output end of the blowing motor is connected to the main board. The blowing motor is fixedly installed in the device host through a motor seat, and a motor clamping part is installed on the top.

[0018] As a preferred technical solution, the device host includes a shell consisting of a front shell and a bottom shell, and a printing mechanism is also installed in the device host. The printing mechanism includes a printer, a printing roll, and a paper bin cover antenna. The printer is electrically connected to the main board, and the paper bin cover antenna is electrically connected to the main board. The output end of the printing roll is installed with a paper bin bottom cover, and the printing roll extends from the paper bin bottom cover to the outside.

[0019] As a preferred technical solution, a slide cover locking switch is also provided on one side of the device host to lock the upward sliding mechanism;

[0020] A plurality of left buttons are arranged on one side of the device host, a USB cover is arranged at the position of the USB port of the mainboard, and a right button and a touch button switch are arranged on the other side of the device host;

[0021] The device host is also provided with a sound outlet, and a speaker is installed in the device host facing the sound outlet.

[0022] As a preferred technical solution, it also includes a Beidou antenna and an intercom antenna arranged in the device host, and the Beidou antenna and the intercom antenna are both connected to the main board.

[0023] The beneficial effects of the utility model are as follows: the alcohol detector of the utility model adopts a back clip mode for use with a mobile terminal. When the camera of the mobile terminal needs to be used, the camera of the mobile terminal can be completely exposed by sliding up the mechanism, so that unobstructed shooting can be achieved, and the alcohol detector can be effectively used;

[0024] A loop antenna is used and installed in the sliding mechanism near the upper part. The loop antenna completely covers the NFC transmitting area of ​​the mobile terminal. The loop antenna forms overlapping and intersecting antenna radiation ranges, so that the mobile terminal can ensure accurate transmission and reception of data when transmitting or receiving data, which not only improves the functionality of the overall device, but also ensures efficiency and reliability in key applications such as law enforcement or security detection scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is the exploded structure diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 3 It is a structural schematic diagram of another viewing angle of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the utility model after removing the mobile terminal;

[0030] Figure 5 The internal structure of the sliding mechanism of the utility model is shown in FIG. Figure 1 ;

[0031] Figure 6 The internal structure of the sliding mechanism of the utility model is shown in FIG. Figure 2 ;

[0032] Figure 7 A top view of the loop antenna of the utility model;

[0033] Figure 8 It is a structural schematic diagram of the upper pressing member of the utility model;

[0034] Fig. 9 It is a structural schematic diagram of the upper shell of the sliding cover of the utility model;

[0035] Fig.10 It is a structural schematic diagram of the locking member of the utility model;

[0036] Description of reference numerals:

[0037] 1. Mobile terminal; 2. Label; 4. Slide cover upper shell; 5. Wireless charging coil; 6. Guide column; 61. Reset spring; 7. Spring clamp nut; 8. Slide cover lower shell; 9. Lower clamp; 11. Blowing motor; 12. Motor seat; 13. USB cover; 14. Left button; 15. Battery; 16. Charging cable; 17. Slide cover lock switch; 18. Print paper roll; 19. Paper compartment cover antenna; 20. Paper compartment bottom cover; 21. Right button; 2 2. Touch button switch; 23. Printer; 24. Speaker; 25. Mouthpiece cover; 26. Mouthpiece passage; 27. Front lens; 28. Camera; 29. ​​Mounting bracket; 30. Scanning head; 31. Motor clamping piece; 32. Main board; 33. Surface shell; 34. Touch screen; 35. Slide rail; 36. Upper clamping piece; 37. Locking piece; 38. Ring antenna; 39. Opening window; 40. Bottom shell; 41. Beidou antenna; 42. Intercom antenna. DETAILED DESCRIPTION

[0038] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0039] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0040] like Figure 1 As shown, a sliding back clip of the utility model includes a device host with a wine detection function, which can be used in conjunction with a mobile terminal 1. The mobile terminal 1 and the device host transmit signals through NFC. The mobile terminal 1 here can be a mobile phone or a tablet, etc., which has an NFC signal transmission function, and can then transmit data with the device host and be used in conjunction. The device host here is a back-clip wine detector, such as patent No. 202211438315.5. The specific internal structure will be introduced later. The mobile terminal 1 can be clamped in the back clip, and the two are used in conjunction. Due to the clamping connection, the whole looks like a complete device, and there is no problem of space occupation. Since the mobile phone is close to the back clip, it can bring favorable conditions for NFC signal transmission.

[0041] In order not to affect the camera function of the mobile terminal 1, the device host further includes a sliding mechanism for mounting the mobile terminal 1, and the sliding mechanism is slidably assembled with the device host. By sliding the sliding mechanism upward relative to the device host, the camera end of the mobile terminal 1 is exposed to obtain a shooting field of view. When the camera function of the mobile terminal 1 needs to be exposed, the sliding mechanism can be manually slid to extend the camera 28 of the mobile terminal 1 to the upper end of the device host. After sliding upward, shooting can be carried out.

[0042] In order to realize data transmission with the mobile terminal 1, in this embodiment, a loop antenna 38 is used, which is installed in the sliding mechanism, and the loop antenna 38 covers the NFC transmission area of ​​the mobile terminal 1, and the loop antenna 38 forms an overlapping and crossed antenna radiation range, such as Figure 7 As shown, the radiation distance of the loop antenna 38 in the length direction is a, and the radiation distance in the width direction is b. Due to its loop shape, it has a large coverage area and can form overlapping and intersecting antenna radiation ranges on the back of the mobile terminal 1. In this way, after the mobile terminal 1 is clamped, it can better transmit data and prevent data interruption during the transmission process, and can perform stable signal transmission in various occasions.

[0043] Please continue reading Figure 1 The sliding mechanism includes a sliding cover upper shell 4 and a sliding cover lower shell 8, the sliding cover upper shell 4 and the sliding cover lower shell 8 are assembled with each other, the loop antenna 38 is arranged in the antenna installation position formed between the sliding cover upper shell 4 and the sliding cover lower shell 8, and the loop antenna 38 can form an overlapping and intersecting antenna radiation range, which can be more stable when used with the mobile terminal 1;

[0044] Among them, Figure 2 and Figure 3 As shown, an upper clamping member 36 is slidably installed on one side of the sliding cover upper shell 4, and a lower clamping member 9 is installed on the sliding cover upper shell 4 away from the side of the upper clamping member 36 through an elastic reset mechanism. A terminal installation position is formed between the upper clamping member 36 and the lower clamping member, and the mobile terminal 1 is clamped in the terminal installation position. A locking member 37 is installed at the bottom of the upper clamping member 36, and the upper clamping member 36 is fixed by the locking member 37.

[0045] like Figure 4-Figure 6As shown, the elastic reset mechanism includes a reset spring 61, a guide column 6 and a spring clamping nut 7. One end of the guide column 6 is connected and assembled with the upper shell 4 of the sliding cover and the lower shell 8 of the sliding cover, and the other end is threadedly connected with the spring clamping nut 7. The reset spring 61 is sleeved on the guide column 6, one side of the reset spring 61 contacts the end surface of the spring clamping nut 7, and the other side of the reset spring 61 contacts the inner wall surface of the spring installation groove. The guide column 6 has a spring clamping nut 7 on one side extending into the lower clamping member. When the lower clamping member is pushed or pulled, the reset spring is compressed.

[0046] like Fig. 9 and Fig.10 As shown, a pull-out slide 200 is provided on both sides of the sliding cover upper shell 4, and a lock buckle 371 is provided on both sides of the locking member 37. The lock buckle extends into the pull-out slide, and the two sides of the upper clamping member are slidably installed in the pull-out slide 200. A plurality of buckle grooves 100 are provided on both sides of the upper clamping member. The lock buckle 371 is buckled into the buckle grooves in different length directions to complete the position adjustment of the upper clamping member on the sliding cover upper shell. The upper clamping member serves as a limiter on the upper end of the mobile terminal, and the lower clamping member serves as an elastic clamping at the bottom of the mobile terminal. Different mobile phone models can be fixed between the upper clamping member and the lower clamping member. The mobile terminal can adjust the position of the camera on the sliding cover upper shell so that the camera falls into the opening window. At the same time, the position of the mobile terminal relative to the bottom ring antenna can also be adjusted so that the internal antenna of the mobile terminal can be in the center position of the ring antenna. The ring antenna forms overlapping and crossed antenna radiation ranges, so that the mobile terminal can ensure accurate transmission and reception of data when transmitting or receiving data.

[0047] like Figure 6 As shown, the middle of the ring antenna 38 is hollowed out and a wireless charging coil 5 is installed. The wireless charging coil 5 is connected to the battery 15 and the main board 32 in the device host through a flexible cable. The mobile terminal 1 is wirelessly charged through the wireless charging coil 5. The main board 32 is connected to a charging cable 16. The battery 15 is charged through the charging cable 16, and then power is supplied to the entire device host.

[0048] Among them, Figure 4 As shown, an opening window 39 is provided on the upper shell 4 and the lower shell 8 of the sliding cover at a position corresponding to the camera end of the mobile terminal 1. When the sliding mechanism slides up, the opening window 39 is exposed. A touch screen 34 is provided on the device host opposite to the opening window 39. When the mobile terminal 1 is not installed, the touch screen 34 is exposed through the opening window 39. The touch screen 34 is electrically connected to the main board 32. The opening window 39 is large enough to completely expose the mobile terminal 1 after being pushed up. Since the positions of the cameras 28 of different types of mobile terminals 1 are different, the size of the opening window 39 is as large as possible to reduce the problem of different types of cameras 28 being blocked.

[0049] Among them, a label 2 is set on the position of the sliding cover upper shell 4 corresponding to the wireless charging coil 5, and a sliding rail 35 is fixedly installed on the device host corresponding to the sliding cover lower shell 8. The sliding cover lower shell 8 is slidably installed on the sliding rail 35. Through the guide rail and the sliding cover, reciprocating guidance can be achieved, so that the sliding cover can reciprocate towards the preset track.

[0050] like Figure 1 As shown, a mounting frame 29 is installed at the top position of the device main body, a camera 28 and a scanning head 30 are installed on the mounting frame 29, and a front lens 27 is installed at the outer end of the mounting frame 29;

[0051] A blowing port is also provided on the device main body located on the side of the camera 28 and the scanning head 30, and a nozzle cover 25 is installed at the blowing port position. The output end of the nozzle cover 25 is connected to the nozzle passage 26. A blowing motor 11 is installed at the output end of the nozzle passage 26. The signal output end of the blowing motor 11 is connected to the main board 32. The blowing motor 11 is fixedly installed in the device main body through the motor seat 12, and a motor clamping piece 31 is installed on the top.

[0052] The device host includes a shell consisting of a front shell 33 and a bottom shell 40. A printer 23 structure is also installed in the device host. The printer 23 structure includes a printer 23, a printing paper roll 18, and a paper bin cover antenna 19. The printer 23 is electrically connected to the main board 32, and the paper bin cover antenna 19 is electrically connected to the main board 32. The output end of the printing paper roll 18 is installed with a paper bin bottom cover 20, and the printing paper roll 18 extends from the paper bin bottom cover 20 to the outside.

[0053] In order to increase the stability of the sliding mechanism when not in use, in this embodiment, a slide cover locking switch 17 is further provided on one side of the device host for locking the sliding mechanism. The slide cover locking switch 17 may be a structure provided with a hook. When pushed, the hook is hooked with the sliding mechanism, so that the sliding mechanism cannot be pushed. The lock can be unlocked by toggling, and the entire sliding mechanism can now slide.

[0054] Among them, a plurality of left buttons 14 are arranged on one side of the device host, and a USB cover 13 is arranged at the position of the USB port corresponding to the main board 32; a right button 21 and a touch button switch 22 are arranged on the other side of the device host; a sound outlet is also arranged on the device host, and a speaker 24 is installed in the device host opposite to the sound outlet; when a wine test is performed, the test results can be played through the speaker 24, and the function can be selected through the buttons on the left and right sides; after the wine test is completed, the test results can be printed through the printer 23, such as printing a penalty ticket, etc. This is part of the content of the previous patent, and the detection process of the wine detector and the use process of the mobile terminal 1 are not specifically described in this embodiment.

[0055] It also includes a Beidou antenna 41 and an intercom antenna 42 arranged in the device host. The Beidou antenna 41 and the intercom antenna 42 are both connected to the main board. The entire device host can be used as an intercom. Therefore, the use of the intercom can be omitted, and the on-site intercom function can be completed by directly using this device.

[0056] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A sliding cover back clip, characterized in that: include: A device host with a wine detection function, the device host can be used in conjunction with a mobile terminal (1), the mobile terminal (1) and the device host perform signal transmission via NFC; An upward sliding mechanism, used for installing the mobile terminal (1), wherein the upward sliding mechanism is slidably assembled with the device host, and by sliding the upward sliding mechanism relative to the device host, the camera end of the mobile terminal (1) is exposed to obtain a shooting field of view; A loop antenna (38) is installed in the upward sliding mechanism, and the loop antenna (38) covers the NFC transmission area of ​​the mobile terminal (1), and an overlapping and intersecting antenna radiation range is formed by the loop antenna (38).

2. The sliding cover back clip according to claim 1, characterized in that: The upward sliding mechanism comprises a sliding cover upper shell (4) and a sliding cover lower shell (8), the sliding cover upper shell (4) and the sliding cover lower shell (8) are assembled with each other, and the loop antenna (38) is arranged in an antenna installation position formed between the sliding cover upper shell (4) and the sliding cover lower shell (8).

3. The sliding cover back clip according to claim 2, characterized in that: The middle of the ring antenna (38) is hollowed out and a wireless charging coil (5) is installed therein; the wireless charging coil (5) is connected to a battery (15) and a mainboard (32) in a device host via a flexible flat cable; the mobile terminal (1) is wirelessly charged via the wireless charging coil (5); and the mainboard (32) is connected to a charging cable (16).

4. The sliding cover back clip according to claim 2, characterized in that: An upper clamping member (36) is slidably mounted on one side of the sliding cover upper shell (4), and a lower clamping member (9) is mounted on the sliding cover upper shell (4) away from the side of the upper clamping member (36) via an elastic reset mechanism. A terminal mounting position is formed between the upper clamping member (36) and the lower clamping member, and the mobile terminal (1) is clamped in the terminal mounting position. A locking member (37) is mounted on the bottom of the upper clamping member (36), and the upper clamping member (36) is fixed by the locking member (37).

5. The sliding cover back clip according to claim 4, characterized in that: The elastic reset mechanism comprises a reset spring (61), a guide column (6) and a spring clamping nut (7); one end of the guide column (6) is connected and assembled with the upper shell (4) and the lower shell (8) of the slide cover, and the other end is threadedly connected with the spring clamping nut (7); the reset spring (61) is sleeved on the guide column (6); one side of the reset spring (61) contacts the end surface of the spring clamping nut (7); the other side of the reset spring (61) contacts the inner wall surface of the spring mounting groove; the guide column (6) has a spring clamping nut (7) on one side extending into the lower clamping member; when the lower clamping member is pushed or pulled, the reset spring is compressed; A pull-out slide is provided on both sides of the upper shell (4) of the slide cover, and a lock buckle is provided on both sides of the locking member. The lock buckle extends into the pull-out slide, and the upper clamping member is slidably installed in the pull-out slide on both sides. A plurality of buckle grooves are provided on both sides of the upper clamping member, and the lock buckle is buckled into the buckle grooves in different length directions to complete the position adjustment of the upper clamping member on the upper shell of the slide cover.

6. The sliding cover back clip according to claim 3, characterized in that: An opening window (39) is provided on the upper sliding cover shell (4) and the lower sliding cover shell (8) at a position corresponding to the camera end of the mobile terminal (1); when the upper sliding mechanism slides upward, the opening window (39) is exposed; a touch screen (34) is provided on the device host facing the opening window (39); when the mobile terminal (1) is not installed, the touch screen (34) is exposed through the opening window (39); and the touch screen (34) is electrically connected to the main board (32).

7. The sliding cover back clip according to claim 2, characterized in that: A label (2) is provided on the upper sliding cover shell (4) at a position corresponding to the wireless charging coil (5), and a slide rail (35) is fixedly installed on the device host corresponding to the lower sliding cover shell (8), and the lower sliding cover shell (8) is slidably installed on the slide rail (35).

8. The sliding cover back clip according to claim 1, characterized in that: A mounting frame (29) is installed at the top of the main body of the device, a camera (28) and a scanning head (30) are installed on the mounting frame (29), and a front lens (27) is installed on the outer end of the mounting frame (29); A blowing port is also provided on the device main body located on one side of the camera (28) and the scanning head (30), a blowing nozzle cover (25) is installed at the blowing port position, the output end of the blowing nozzle cover (25) is connected to the blowing nozzle passage (26), a blowing motor (11) is installed at the output end of the blowing nozzle passage (26), the signal output end of the blowing motor (11) is connected to the main board (32), the blowing motor (11) is fixedly installed in the device main body through the motor seat (12), and a motor clamping piece (31) is installed on the top.

9. The sliding cover back clip according to claim 1, characterized in that: The device host comprises a shell body consisting of a front shell (33) and a bottom shell (40), and a printer (23) structure is also installed in the device host, and the printer (23) structure comprises a printer (23), a printing roll (18), and a paper bin cover antenna (19). The printer (23) is electrically connected to a main board (32), and the paper bin cover antenna (19) is electrically connected to the main board (32). The output end of the printing roll (18) is installed with a paper bin bottom cover (20), and the printing roll (18) extends from the paper bin bottom cover (20) to the outside.

10. The sliding cover back clip according to claim 1, characterized in that: A slide cover locking switch (17) is also provided on one side of the device main body for locking the upward sliding mechanism; A plurality of left-side buttons (14) are arranged on one side of the device host, a USB cover (13) is arranged at a position corresponding to the USB port of the mainboard (32), and a right-side button (21) and a touch button switch (22) are arranged on the other side of the device host; The device host is also provided with a sound outlet, and a speaker (24) is installed in the device host facing the sound outlet.

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