Universal alcohol detector back clasp module

Abstract

The application provides a universal alcohol detector back clamping module, which comprises a back clamping and a mobile phone cover which is detachably installed on the back clamping, the back clamping is used for communication connection with a mobile phone, and the mobile phone cover is used for accommodating the mobile phone. The universal alcohol detector back clamping module has the advantages of good adaptability, low cost, reliable fixation and convenient disassembly of the mobile phone cover.

Description

Technical Field

[0001] This invention relates to the field of alcohol detection technology, and in particular to a universal alcohol detector back clip module. Background Technology

[0002] Police mobile terminals are law enforcement devices used by police officers to conduct on-site checks of suspects and issue tickets. They generally come in two forms: general-purpose and special-purpose. General-purpose police communication devices typically consist of a mobile phone and dedicated software, such as Huawei's Mate 30 and Mate 40, as well as some ZTE phones. Dedicated police communication devices are specially designed and generally use the Android system. Examples include Chinese patent application number 201730427834.5, entitled "4G Police Communication Device (X1)," and Chinese patent application number 202021577669.4, which describes a mobile police terminal. These devices are generally equipped with features not found in general-purpose police communication devices, such as thermal printers and QR code scanners. However, the hardware and software performance of the Android system in dedicated police communication devices is generally inferior to that of Huawei phones, including communication functions, Android operating interface, camera and image / video processing capabilities. Moreover, the mobile phone can be used for two purposes; by adding a security authentication module, the mobile phone-type police communication device can be used for official business as well as for ordinary calls. Dedicated police communication devices, on the other hand, generally lack call functionality, have a lower Android system version, and support fewer apps than Huawei phones. However, since these types of mobile phones are not specifically designed for police work, they also have problems such as small battery capacity and lack of printing equipment, so they must be equipped with a separate printer, which is inconvenient to use.

[0003] Breathalyzers (BACs) are commonly used by traffic police to detect drunk driving. Currently, test results are uploaded to the traffic management department's server via 4G to prevent favoritism in enforcement. However, current BACs have relatively low hardware and software specifications; for example, they typically have small screens, older Android operating system versions, weak camera image and video processing capabilities, and poor network connectivity. Therefore, many units upload BAC results to a police mobile terminal for processing and issuing tickets. The method used is for the BAC to connect to the police mobile terminal via 4G or Bluetooth to transmit the test results, but this operation is cumbersome. Furthermore, when investigating drunk driving, both the BAC and the police mobile terminal need to be carried, which is inconvenient to carry and operate.

[0004] To address this, some researchers have developed a device that integrates a breathalyzer with a mobile police communication device. For example, Chinese patent application number 202220677705.7, entitled "An Adjustable Multifunctional NFC Printing Back Clip," integrates a breathalyzer into a back clip. The phone is fixed to the clip and communicates with it via NFC or Bluetooth. The clip contains a thermal printer, a wireless charging module, and a high-capacity lithium battery. Therefore, the clip can power the phone wirelessly or via USB, detect alcohol, and transmit the results to the phone. An app on the phone can generate a ticket, which is then printed by the printer on the clip. The clip uses a sliding bracket to hold the phone in place, with the bracket designed to secure the phone to its two lower corners. However, due to the varying specifications of different phone models, the sliding bracket is not compatible with all models. Furthermore, mobile phones are frequently updated, and multiple manufacturers offer phones that can be used for police communication, resulting in poor compatibility for this back clip. At the same time, because the card holder is movable and is only tightened by an internal spring, its impact resistance is poor. The police mobile phone fixed to it is easy to fall out of the card holder after a collision, so the fixation is unreliable. Summary of the Invention

[0005] The purpose of this invention is to provide a universal alcohol detector back clip module. The back clip can be used interchangeably, and different phone cases can be designed for different mobile phones. It has good adaptability, low cost, reliable fixation, and convenient phone case removal.

[0006] To achieve the above objectives, the present invention provides a universal alcohol detector back clip module, comprising: a back clip and a mobile phone case detachably mounted on the back clip, wherein the back clip is used for communication connection with a mobile phone, and the mobile phone case is used for housing the mobile phone.

[0007] The back clip includes a first housing, a second housing that docks with the first housing, a circuit board installed in the first and second housings, a battery installed in the first and second housings and electrically connected to the circuit board, a printer assembly installed in the first and second housings and electrically connected to the circuit board, a breath alcohol detection assembly installed in the first and second housings and electrically connected to the circuit board, and a sliding buckle assembly installed in the first and second housings.

[0008] The phone case includes a main body and a positioning part and a locking part respectively disposed on the main body; the main body is installed on a first housing and is used to accommodate a phone; the positioning part cooperates with the first housing for positioning, and the locking part cooperates with a sliding buckle assembly to realize the detachable installation of the phone case on the back clip.

[0009] The positioning part extends outward from one end wall of the body, and the locking part extends downward from the bottom surface of the body.

[0010] The first housing has a receiving portion for accommodating a mobile phone case and an abutting wall located at one end of the receiving portion; the abutting wall is used for one end of the mobile phone case body to abut against, and the abutting wall has a positioning groove for the positioning part of the mobile phone case to be inserted; the receiving portion has a positioning hole near the end away from the abutting wall for the locking part of the mobile phone case to be inserted; through the cooperation of the positioning groove and the positioning part and the cooperation of the positioning hole and the locking part, the mobile phone case body is positioned on the receiving portion.

[0011] The sliding buckle assembly is installed inside the second housing at the position corresponding to the positioning hole of the first housing. The sliding buckle assembly locks the locking part of the phone case, thereby fixing the phone case onto the receiving part of the first housing.

[0012] The sliding buckle assembly includes a sliding buckle component and a sliding buckle cover. The sliding buckle cover presses onto the sliding buckle component and is fixed to the second housing. The sliding buckle component is installed on the second housing through the sliding buckle cover, and the sliding buckle component can move relative to the sliding buckle cover. By moving the sliding buckle component, the sliding buckle assembly can lock or disengage from the locking part of the phone case, thereby fixing the phone case on the back clip or removing the phone case from the back clip.

[0013] The latch part is provided with a lock hole.

[0014] The sliding fastener includes a base, hooks extending from both ends of the base toward one side, and a pushing part extending from the base toward the other side; the phone case is locked onto the receiving part by the hooks engaging with the locking holes of the locking part of the phone case.

[0015] The hook includes a rod and a hook protruding outward from the free end of the rod; the hook extends into the locking hole of the buckle to lock the phone case onto the receiving part.

[0016] The rod has a through hole at one end of its connecting base. The sliding cover passes through the through hole of the hook and remains in contact with the base. The sliding fastener can move relative to the sliding cover.

[0017] The base is provided with a long strip-shaped guide rail protruding towards the sliding cover, and the sliding cover is provided with a long strip-shaped guide groove. Through the cooperation of the guide rail and the guide groove, the sliding fastener can move smoothly relative to the sliding cover.

[0018] The second housing has a sliding groove for the pushing part of the corresponding sliding fastener. The pushing part is exposed in the sliding groove and can slide in the sliding groove. By pushing the pushing part from the outside of the back clip to make the sliding fastener slide relative to the sliding cover, the hook part of the buckle can be inserted into or moved out of the lock hole of the buckle part to lock or unlock the buckle part, thereby fixing the phone case to the back clip or removing the phone case from the back clip.

[0019] The sliding groove is elongated, and its length limits the sliding stroke of the pushing part, thereby restricting the movement of the sliding fastener.

[0020] The bottom surface of the phone case body is provided with a first through hole, which corresponds to the camera component of the phone to ensure the framing of the shot.

[0021] The first housing has a first opening in the receiving part corresponding to the first through hole of the phone case body, the second housing has a second opening corresponding to the first opening, and the circuit board has a third opening corresponding to the first and second openings, thereby ensuring that the camera component can achieve shooting and framing through the back clip.

[0022] The back clip also includes a wireless charging coil installed between the first housing and the circuit board and electrically connected to the circuit board.

[0023] The bottom surface of the phone case body is provided with a second through hole; the second through hole corresponds to the wireless charging component of the phone.

[0024] The first housing has a protruding coil mounting part on the receiving part. The coil mounting part extends into the second through hole of the phone case body. The wireless charging coil is housed inside the coil mounting part. The wireless charging coil can provide wireless charging for the phone housed in the phone case.

[0025] The height of the protruding receiving portion of the coil mounting part is equal to or less than the depth of the second perforation.

[0026] The circuit board is located inside the accommodating portion of the first housing. The circuit board has a first USB interface at the free end of the accommodating portion for communicating with a mobile phone and for charging the mobile phone. The first housing has a recessed portion corresponding to the position of the first USB interface for accommodating the USB cable connecting the first USB interface and the mobile phone.

[0027] The printer assembly is installed in one end of the first housing and the second housing where they abut against the wall. The printer assembly includes a printer, a paper output rack, and a cover plate. The printer is installed in the first housing and the second housing. The paper output rack is installed on the first housing and is adjacent to the abutment wall. The cover plate covers the first housing and is adjacent to the paper output rack. The paper output port of the paper output rack protrudes from the first housing.

[0028] The breath alcohol detection component is installed in one end of the first housing and the second housing where they abut against each other; the breath alcohol detection component includes an alcohol detection sensor and an air inlet pipe that provides detection gas to the alcohol detection sensor; the alcohol detection sensor is installed in the first housing and the second housing; the air inlet pipe has a mouthpiece insertion port, the air inlet pipe is installed in the first housing and the second housing, and the mouthpiece insertion port is exposed on one end face of the first housing for easy insertion of the alcohol detection mouthpiece.

[0029] The phone case has two positioning parts, each of which is sheet-shaped, and two positioning grooves that abut against the wall, the shape of which is adapted to the positioning parts.

[0030] The phone case has two locking parts, each in the shape of a sheet. The locking hole of the locking part is rectangular. The receiving part has two positioning holes, the shapes of which are adapted to the locking parts. The sliding fastener has two hooks, the shapes of which are adapted to the locking holes of the locking parts.

[0031] The beneficial effects of this invention are as follows: This invention provides a universal alcohol detector back clip. The phone case body is designed with a structure similar to existing mobile phone cases. Two positioning parts are formed at the front end of the phone case body, which can extend into the back clip. A locking part is formed at the bottom of the phone case body, which enters and secures to the bottom of the back clip. Thus, only the phone case body needs to be replaced according to different mobile phones, as the positioning parts at the front end and the locking part at the bottom of the phone case body use the same design. Therefore, the back clip can be used interchangeably; only different phone cases need to be designed for different mobile phones. Since the materials and molds for phone cases are relatively inexpensive, this design has the characteristics of good adaptability, low cost, reliable fixation, and convenient phone case removal. Attached Figure Description

[0032] To further understand the features and technical content of this invention, please refer to the following detailed description and accompanying drawings. However, the drawings are provided for reference and illustration only and are not intended to limit the invention.

[0033] In the attached diagram,

[0034] Figure 1 This is an exploded perspective view of the back clip module of the universal alcohol detector of the present invention.

[0035] Figure 2 This is an assembly diagram of the universal alcohol detector back clip module of the present invention;

[0036] Figure 3 This is a perspective view of the back clip of the universal alcohol detector back clip module of the present invention;

[0037] Figure 4 This is a three-dimensional exploded view of a portion of the back clip module of the universal alcohol detector of the present invention.

[0038] Figure 5 for Figure 4 A combination diagram;

[0039] Figure 6 Similar to Figure 5 However, it displays a different state;

[0040] Figure 7 for Figure 4 Another perspective of the combined image;

[0041] Figure 8 A perspective view of the universal alcohol detector back clip module of the present invention with a mobile phone mounted on it;

[0042] Figure 9 For similar Figure 8 But it shows another angle;

[0043] Figure 10 Similar to Figure 8 However, a portion of it was cut off;

[0044] Figure 11 This is a perspective view of the battery of the universal alcohol detector back clip module of the present invention installed in the second housing;

[0045] Figure 12 This is a top view of the back clip module of the universal alcohol detector of the present invention. Detailed Implementation

[0046] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the preferred embodiments of the present invention and their accompanying drawings.

[0047] Please see Figures 1 to 12 This invention provides a universal alcohol detector back clip module, which includes a back clip 2 and a mobile phone case 4 detachably mounted on the back clip 2. The back clip 2 is used for communication connection with a mobile phone 6. The mobile phone case 4 is used to house the mobile phone 6.

[0048] Please see Figure 1 The phone case 4 includes a body 41, two positioning portions 43 extending outward from one end wall of the body 41, and two locking portions 45 extending downward from the bottom surface of the body 41. Each locking portion 45 has a locking hole 451. In this embodiment, the two locking portions 45 are located at the opposite end of the positioning portions 43, adjacent to the other end of the body 41.

[0049] The phone case 4 body 41 is used to house the phone 6 and can adopt the structure of existing phone cases. After being put on the phone 6, it can tightly surround the phone 6. The phone case 4 body 41 is made of a soft but slightly hard material (hardness (generally around Shore 90 degrees)) and has a certain elastic tensile strength. Once the phone 6 is fixed in place, it is difficult to fall off. The phone 6 can only be peeled off from the phone case 4 after the phone case 4 is removed from the back clip 2. Therefore, the phone 6 can be fixed to the back clip 2 very well.

[0050] The bottom surface of the phone case 4 body 41 is provided with a first through hole 412 and a second through hole 414. The first through hole 412 is set to the camera component 62 of the phone 6 so as not to affect its shooting framing. The second through hole 414 is set to the wireless charging component (not shown) of the phone 6 to facilitate wireless charging.

[0051] The back clip 2 includes a first housing 20, a second housing 21 mating with the first housing 20, a circuit board 22 installed in the first and second housings 20 and 21, a battery 23 installed in the first and second housings 20 and 21 and electrically connected to the circuit board 22, a printer assembly 25 installed in the first and second housings 20 and 21 and electrically connected to the circuit board 22, a breath alcohol detection assembly 26 installed in the first and second housings 20 and 21 and electrically connected to the circuit board 22, a sliding buckle assembly 27 installed in the first and second housings 20 and 21, and a wireless charging coil 28 installed between the first housing 20 and the circuit board 22 and electrically connected to the circuit board 22.

[0052] The first housing 20 has a receiving portion 201 for accommodating a mobile phone case 4 and an abutment wall 203 located at one end of the receiving portion 201. The abutment wall 203 is used for one end of the mobile phone case 4 to abut against. The abutment wall 203 has a pair of positioning grooves 2032 for the positioning part 43 of the mobile phone case 4 to be inserted. The receiving portion 201 has a pair of positioning holes 2012 near the end away from the abutment wall 203 for the locking part 45 of the mobile phone case 4 to be inserted. Through the cooperation of the positioning grooves 2032 and the positioning part 43 and the cooperation of the positioning holes 2012 and the locking part 45, the mobile phone case 4 is positioned on the receiving portion 201.

[0053] The sliding buckle assembly 27 is installed inside the second housing 21 at the position corresponding to the positioning hole 2012 of the first housing 20. The sliding buckle assembly 27 locks the locking part 45 of the phone case 4, thereby fixing the phone case 4 on the receiving part 201 of the first housing 20.

[0054] The sliding fastener assembly 27 includes a sliding fastener 271 and a sliding fastener cover 273. The sliding fastener cover 273 presses onto the sliding fastener 271 and is fixed to the second housing 21. The sliding fastener 271 is mounted on the second housing 21 through the sliding fastener cover 273, and the sliding fastener 271 can move relative to the sliding fastener cover 273. By moving the sliding fastener 271, the sliding fastener assembly 27 can lock or disengage from the locking part 45 of the phone case 4, thereby fixing the phone case 4 to the back clip 2 or removing the phone case 4 from the back clip 2.

[0055] The sliding fastener 271 includes a base 2712, two hooks 2714 extending from both ends of the base 2712 toward one side, and a pushing part 2716 extending from the base 2712 toward the other side. The two hooks 2714 engage with the locking holes 451 of the two locking parts 45 of the phone case 4 to lock the phone case 4 onto the receiving part 201.

[0056] The hooks 2714 include a rod 27141 and a hook 27143 protruding outward from the free end of the rod 27141. The hooks 27143 of the two hooks 2714 extend into the locking holes 451 of the two locking parts 45, respectively, to lock the phone case 4 onto the receiving part 201. When the hooks 27143 of the two hooks 2714 are removed from the locking holes 451 of the two locking parts 45, the phone case 4 can be removed from the receiving part 201.

[0057] The rod 27141 has a through hole 27145 at one end of its connecting base 2712. The sliding cover 273 passes through the two through holes 27145 of the two hooks 2714 respectively and keeps in contact with the base 2712. The sliding fastener 271 can move relative to the sliding cover 273.

[0058] The base 2712 is provided with a long strip-shaped guide rail 27122 protruding towards the sliding cover 273, and the sliding cover 273 is provided with a long strip-shaped guide groove 2732. Through the cooperation of the guide rail 27122 and the guide groove 2732, the sliding fastener 271 can move smoothly relative to the sliding cover 273.

[0059] The second housing 21 has a sliding groove 212 corresponding to the pushing part 2716 of the sliding fastener 271. The pushing part 2716 protrudes from the sliding groove 212 and can slide within the sliding groove 212. By pushing the pushing part 2716 from the outside of the back clip 2 to slide the sliding fastener 271 relative to the sliding cover 273, the hook part 27143 of the hook 2714 can be inserted into or removed from the locking hole 451 of the locking part 45, thereby locking or unlocking the locking part 45, thus fixing the phone case 4 to the back clip 2 or removing the phone case 4 from the back clip 2.

[0060] The sliding groove 212 is elongated, and its length can limit the sliding stroke of the pushing part 2716, thereby restricting the movement of the sliding fastener 271.

[0061] To increase the damping feel of pushing the push part 2716, the sliding buckle assembly 27 also includes two positioning beads 275. The positioning beads 275 are installed between the second housing 21 and the sliding buckle cover 273, and the positioning beads 275 abut against the base 2712 of the sliding buckle 271, thereby increasing the damping when the sliding buckle 271 moves, thereby improving the feel of pushing the push part 2716.

[0062] The first housing 20 has a protruding coil mounting portion 205 on the receiving portion 201. The coil mounting portion 205 extends into the second through hole 414 of the phone case 4 body 41. The height of the coil mounting portion 205 protruding from the receiving portion 201 is equal to or less than the depth of the second through hole 414, i.e., the thickness of the phone case 4 body 41. The wireless charging coil 28 is housed inside the coil mounting portion 205. The wireless charging coil 28 can provide wireless charging for the phone 6 housed inside the phone case 4.

[0063] The circuit board 22 is disposed inside the receiving portion 201 of the first housing 20. The circuit board 22 has a first USB interface 221 at its free end in the receiving portion 201 for communication with the mobile phone 6 and for charging the mobile phone 6. The first housing 20 has a recess 207 corresponding to the position of the first USB interface 221 to accommodate the USB cable 29 connecting the first USB interface 221 and the mobile phone 6. The USB cable 29 can be a flexible PCB, capable of data transmission and charging. By accommodating the USB cable 29 within the recess 207, it is easy to pull out when needed, protecting the USB cable 29 from accidental pulling, and also simplifying the wiring of the universal alcohol detector back clip module of this invention.

[0064] The circuit board 22 has a second USB interface 223 on one side of the accommodating portion 201, which is used to connect to an external power source (not shown) and can also be used to connect to an external computer (not shown) to achieve communication with the computer or to draw power from the computer. Both the first and second USB interfaces 221 and 223 adopt Type-C interfaces.

[0065] The battery 23 is installed on the inner side of the second housing 21. Specifically, the battery 23 is fixedly installed on the second housing 21 by a battery clamp 211. The battery 23 is electrically connected to the second USB interface 223, so that it can supply power to the second USB interface 223 and can also be charged through the second USB interface 223.

[0066] The first housing 20 has a first opening 208 in the receiving part 201 corresponding to the first through hole 412 of the main body 41 of the phone case 4, the second housing 21 has a second opening 213 corresponding to the first opening 208, and the circuit board 22 has a third opening 225 corresponding to the first and second openings 208 and 213, so that the camera component 62 can be unobstructed by the back clip 2 and maintain its camera function.

[0067] The printer assembly 25 can be implemented using existing technology and is installed at the end where the first housing 20 and the second housing 21 are located, opposite to the abutment wall 203. The printer assembly 25 includes a printer 252, a paper output rack 254, and a cover plate 256. The printer 252 is installed within the first housing 20 and the second housing 21. The paper output rack 254 is installed on the first housing 20 and is adjacent to the abutment wall 203. The cover plate 256 covers the first housing 20 and is adjacent to the paper output rack 254. The paper output port 2541 of the paper output rack 254 protrudes from the first housing 20.

[0068] The breath alcohol detection component 26 can be implemented using existing technology and is installed in the end of the first housing 20 and the second housing 21 where they abut against the wall 203. The breath alcohol detection component 26 includes an alcohol detection sensor 261 and an air inlet pipe 263 that provides detection gas to the alcohol detection sensor 261. The alcohol detection sensor 261 is installed inside the first housing 20 and the second housing 21. The air inlet pipe 263 has a mouthpiece insertion port 2632. The air inlet pipe 263 is installed inside the first housing 20 and the second housing 21, and the mouthpiece insertion port 2632 is exposed on the end face of the first housing 20 away from the recess 207 to facilitate the insertion of an alcohol detection mouthpiece (not shown).

[0069] The number and shape of the positioning parts 43 of the mobile phone case 4 can be set as needed. In this embodiment, there are two, but in other embodiments, there can be one, three, or more. In this embodiment, the positioning part 43 is plate-shaped, but in other embodiments, it can be cone-shaped, column-shaped, etc. Correspondingly, the number of positioning grooves 2032 that abut against the wall 203 is the same as the number of positioning parts 43, and their shapes are adapted to the positioning parts 43.

[0070] The number and shape of the latching parts 45 of the phone case 4 can be set as needed. In this embodiment, there are two latching parts, but in other embodiments, there can be one, three, or more. In this embodiment, the latching part 45 is plate-shaped, but in other embodiments, it can be conical, cylindrical, etc. The shape of the locking hole 451 of the latching part 45 is rectangular in this embodiment, but in other embodiments, it can be circular or triangular. Correspondingly, the number of positioning holes 2012 of the receiving part 201 is the same as that of the latching part 45, and their shapes are adapted to the latching part 45; the number of hooks 2714 of the sliding fastener 271 is the same as that of the latching part 45, and the shape of the hook 27143 is adapted to the locking hole 451 of the latching part 45.

[0071] Understandably, according to the concept of the present invention, there can be different implementations. For example, the positions of the positioning part 43, the locking part 45, the positioning groove 2032, the positioning hole 2012, and the sliding fastener 271 can be changed. It is even possible to directly use one end of the phone case body as the positioning part. Correspondingly, the first shell can be set to abut against the wall to cooperate with the positioning of one end of the body. For example, the edge of the abutment against the wall forms an arc-shaped positioning surface, which can cover one end of the body, which is equivalent to restricting the movement of one end of the body in five directions.

[0072] In summary, the universal alcohol detector back clip module of this invention adopts a design similar to existing mobile phone cases, with a phone case body 41. Two positioning parts 43 are formed at the front end of the phone case body 41, which can extend into the back clip 2. A locking part 45 is formed at the bottom of the phone case body 41, which enters and secures the back clip 2. Thus, only the phone case body 41 needs to be replaced according to different mobile phones, as the positioning parts 43 at the front end and the locking part 45 at the bottom end of the phone case body 41 use the same design. Therefore, the back clip 2 can be shared, and only different phone cases 4 need to be designed for different mobile phones. Since the materials and molds for the phone case 4 are relatively inexpensive, this design has the characteristics of good adaptability, low cost, reliable fixation, and convenient phone case removal.

[0073] As described above, those skilled in the art can make various other corresponding changes and modifications based on the technical solutions and concepts of this invention, and all such changes and modifications should fall within the protection scope of the claims of this invention.

Claims

1. A universal alcohol detector back clip module, characterized in that, include: A back clip (2) and a phone case (4) detachably mounted on the back clip (2), wherein the back clip (2) is used for communication connection with a mobile phone (6) and the phone case (4) is used for housing the mobile phone (6); The back clip (2) includes a first housing (20), a second housing (21) that docks with the first housing (20), and a sliding buckle assembly (27) installed in the first and second housings (20, 21); The phone case (4) includes a body (41) and a positioning part (43) and a locking part (45) respectively disposed on the body (41); the body (41) is mounted on the first housing (20) for accommodating the phone (6); the positioning part (43) extends outward from one end wall of the body (41), and the locking part (45) extends downward from the bottom surface of the body (41), and the locking part (45) is provided with a locking hole (451). The positioning part (43) is positioned in conjunction with the first housing (20), and the sliding buckle assembly (27) extends into the locking hole (451) of the locking part (45), so that the locking part (45) and the sliding buckle assembly (27) cooperate to realize the detachable installation of the mobile phone case (4) on the back clip (2); The phone case (4) includes multiple cases. The positioning part (43) and the locking part (45) of each phone case (4) adopt the same design and can cooperate with the first housing (20) and the sliding buckle assembly (27) respectively, so that each phone case (4) can be installed on the back clip (2) respectively, so that different phones (6) can share one back clip (2) through each phone case (4).

2. The universal alcohol detector back clip module as described in claim 1, characterized in that, The back clip (2) includes a circuit board (22) installed in the first and second housings (20, 21) and a breath alcohol detection component (26) installed in the first and second housings (20, 21) and electrically connected to the circuit board (22).

3. The universal alcohol detector back clip module as described in claim 2, characterized in that, The back clip (2) also includes a battery (23) electrically connected to the circuit board (22) and installed in the first and second housings (20, 21), and a printer assembly (25) electrically connected to the circuit board (22) and installed in the first and second housings (20, 21).

4. The universal alcohol detector back clip module as described in claim 2, characterized in that, The first housing (20) has a housing portion (201) for housing a mobile phone case (4) and an abutment wall (203) located at one end of the housing portion (201); the abutment wall (203) is used for one end of the body (41) of the mobile phone case (4) to abut against, and the abutment wall (203) has a positioning groove (2032) for the positioning part (43) of the mobile phone case (4) to be inserted; the housing portion (201) has a positioning hole (2012) near the end away from the abutment wall (203) for the locking part (45) of the mobile phone case (4) to be inserted; the body (41) of the mobile phone case (4) is positioned on the housing portion (201) by the cooperation of the positioning groove (2032) and the positioning part (43) and the cooperation of the positioning hole (2012) and the locking part (45).

5. The universal alcohol detector back clip module as described in claim 4, characterized in that, The sliding buckle assembly (27) is installed on the inside of the second housing (21) at the position corresponding to the positioning hole (2012) of the first housing (20). The sliding buckle assembly (27) locks the locking part (45) of the phone case (4), thereby fixing the phone case (4) on the receiving part (201) of the first housing (20).

6. The universal alcohol detector back clip module as described in claim 5, characterized in that, The sliding buckle assembly (27) includes a sliding buckle (271) and a sliding buckle cover (273). The sliding buckle cover (273) presses on the sliding buckle (271) and is fixed on the second housing (21). The sliding buckle (271) is installed on the second housing (21) through the sliding buckle cover (273), and the sliding buckle (271) can move relative to the sliding buckle cover (273). By moving the sliding buckle (271), the sliding buckle assembly (27) can lock or disengage from the locking part (45) of the phone case (4), thereby fixing the phone case (4) on the back clip (2) or removing the phone case (4) from the back clip (2).

7. The universal alcohol detector back clip module as described in claim 6, characterized in that, The latch (45) is provided with a lock hole (451); The sliding fastener (271) includes a base (2712), hooks (2714) extending from both ends of the base (2712) toward one side, and a pushing part (2716) extending from the base (2712) toward the other side; the hooks (2714) cooperate with the locking holes (451) of the locking part (45) of the phone case (4) to lock the phone case (4) onto the receiving part (201).

8. The universal alcohol detector back clip module as described in claim 7, characterized in that, The hook (2714) includes a rod (27141) and a hook (27143) protruding outward from the free end of the rod (27141); the hook (27143) of the hook (2714) extends into the locking hole (451) of the locking part (45) to lock the mobile phone case (4) onto the receiving part (201).

9. The universal alcohol detector back clip module as described in claim 8, characterized in that, The rod (27141) has a through hole (27145) at one end of its connecting base (2712). The sliding cover (273) passes through the through hole (27145) of the hook (2714) and remains in contact with the base (2712). The sliding fastener (271) can move relative to the sliding cover (273).

10. The universal alcohol detector back clip module as described in claim 9, characterized in that, The base (2712) is provided with a long strip-shaped guide rail (27122) protruding towards the sliding cover (273), and the sliding cover (273) is provided with a long strip-shaped guide groove (2732). Through the cooperation of the guide rail (27122) and the guide groove (2732), the sliding fastener (271) can move smoothly relative to the sliding cover (273).

11. The universal alcohol detector back clip module as described in claim 7, characterized in that, The second housing (21) has a sliding groove (212) on the push part (2716) of the sliding fastener (271). The push part (2716) is exposed in the sliding groove (212) and can slide in the sliding groove (212). By pushing the push part (2716) from the outside of the back clip (2) to make the sliding fastener (271) slide relative to the sliding cover (273), the hook part (27143) of the buckle (2714) can be inserted into or removed from the lock hole (451) of the buckle part (45) to lock or unlock the buckle part (45), thereby fixing the phone case (4) on the back clip (2) or removing the phone case (4) from the back clip (2).

12. The universal alcohol detector back clip module as described in claim 11, characterized in that, The sliding groove (212) is elongated, and its length limits the sliding stroke of the pushing part (2716), thereby restricting the movement of the sliding fastener (271).

13. The universal alcohol detector back clip module as described in claim 2, characterized in that, The bottom surface of the main body (41) of the mobile phone case (4) is provided with a first through hole (412), which corresponds to the camera component (62) of the mobile phone (6) to ensure the shooting view; The first housing (20) has a first opening (208) in the receiving part (201) corresponding to the first through hole (412) of the main body (41) of the phone case (4), the second housing (21) has a second opening (213) corresponding to the first opening (208), and the circuit board (22) has a third opening (225) corresponding to the first and second openings (208, 213), thereby ensuring that the camera component (62) can take pictures and frame the shot through the back clip (2).

14. The universal alcohol detector back clip module as described in claim 2, characterized in that, The back clip (2) also includes a wireless charging coil (28) installed between the first housing (20) and the circuit board (22) and electrically connected to the circuit board (22); The bottom surface of the main body (41) of the mobile phone case (4) is provided with a second through hole (414); the second through hole (414) corresponds to the wireless charging component of the mobile phone (6); The first housing (20) has a protruding coil mounting part (205) on the receiving part (201). The coil mounting part (205) extends into the second through hole (414) of the main body (41) of the mobile phone case (4). The wireless charging coil (28) is housed inside the coil mounting part (205). The wireless charging coil (28) can provide wireless charging for the mobile phone (6) housed in the mobile phone case (4).

15. The universal alcohol detector back clip module as described in claim 14, characterized in that, The height of the coil mounting portion (205) protruding from the receiving portion (201) is equal to or less than the depth of the second through hole (414).

16. The universal alcohol detector back clip module as described in claim 2, characterized in that, The circuit board (22) is located inside the accommodating portion (201) of the first housing (20). The circuit board (22) has a first USB interface (221) at the free end of the accommodating portion (201) for communicating with the mobile phone (6) and for charging the mobile phone (6). The first housing (20) has a recess (207) corresponding to the position of the first USB interface (221) for accommodating the USB cable (29) connecting the first USB interface (221) and the mobile phone (6).

17. The universal alcohol detector back clip module as described in claim 3, characterized in that, The printer assembly (25) includes a printer (252), a paper output rack (254), and a cover plate (256). The printer (252) is installed inside a first housing (20) and a second housing (21). The paper output rack (254) is installed on the first housing (20). The cover plate (256) covers the first housing (20) and is adjacent to the paper output rack (254). The paper output port (2541) of the paper output rack (254) is exposed outside the first housing (20).

18. The universal alcohol detector back clip module as described in claim 3, characterized in that, The breath alcohol detection assembly (26) includes an alcohol detection sensor (261) and an air inlet pipe (263) that provides detection gas to the alcohol detection sensor (261); the alcohol detection sensor (261) is installed in the first housing (20) and the second housing (21); the air inlet pipe (263) is provided with a mouthpiece insertion port (2632), the air inlet pipe (263) is installed in the first housing (20) and the second housing (21), and the mouthpiece insertion port (2632) is exposed on one end face of the first housing (20) for easy insertion of an alcohol detection mouthpiece.

19. The universal alcohol detector back clip module as described in claim 8, characterized in that, The number of positioning parts (43) of the mobile phone case (4) is two, the shape of the positioning parts (43) is sheet-like, and the number of positioning grooves (2032) that abut against the wall (203) is two, the shape of which is adapted to the positioning parts (43); The phone case (4) has two locking parts (45), each of which is sheet-shaped. The locking hole (451) of the locking part (45) is rectangular. The accommodating part (201) has two positioning holes (2012), the shapes of which are adapted to the locking part (45). The sliding fastener (271) has two hooks (2714), the shapes of which are adapted to the locking hole (451) of the locking part (45).

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