A mobile terminal based on telecommunication service external communication device

Abstract

This application discloses an external communication device for a mobile terminal based on telecommunications services, belonging to the field of communication external communication technology. The invention includes a device body, a protective back cover snapped onto the rear side of the device body, a cable take-up seat fixedly connected to the inner surface of the device body, a cable take-up groove formed on the rear side of the cable take-up seat, a cable take-up groove formed on the bottom rear side of the device body, a partition fixedly connected to the upper surface of the cable take-up groove, an inner groove formed on the lower surface of the cable take-up seat, a telescopic plate slidably connected to the inner surface of the inner groove, a lower clamping roller hinged to the inner surface of the telescopic plate, a limit frame fixedly connected to the lower surface of the cable take-up seat, and an upper clamping roller hinged to the side surface of the limit frame. When the mobile terminal's communication signal is poor, the application allows control of Bluetooth connection via the operation panel. If the signal is still poor, the protective back cover is opened and the signal transmission cable is directly connected to the terminal to enhance transmission strength and ensure communication quality.

Description

Technical Field

[0001] This invention belongs to the field of communication extension, specifically relating to an extension communication device for a mobile terminal based on telecommunications services. Background Technology

[0002] Mobile terminals have become deeply integrated into daily life, but in remote areas with weak signal coverage, underground spaces, or densely built-up areas, mobile terminals often experience call interruptions and data connection failures due to signal attenuation, which seriously affects normal communication. Existing solutions mainly rely on the addition of base stations or indoor distribution systems, which have long construction cycles, high costs, and are difficult to cover scattered blind spots.

[0003] Patent CN207184820U discloses an external communication device for a mobile terminal, including a housing, a communication circuit board, and a charging device. The housing has a mounting cavity, and the communication circuit board is disposed within the mounting cavity for communication connection with the mobile terminal. The communication circuit board is provided with a communication card slot, and the charging device is disposed within the mounting cavity for charging the mobile terminal. In use, a communication card is inserted into the communication card slot, enabling the mobile terminal to communicate with the communication card in the communication card slot, thus realizing external communication for the mobile terminal and effectively meeting the user's needs. Furthermore, the housing also provides a charging device for charging the mobile terminal. In particular, the above technical effects are more prominent when the user is in an outdoor location. In summary, this device realizes both external communication for the mobile terminal and charging functionality.

[0004] The above-mentioned devices also have the following problems: the signal transmission lines of existing external communication equipment are complicated to store, and are easy to drag when pulled, affecting operation; the outer casing is cumbersome to disassemble and assemble, making it difficult to quickly open and close to deal with emergencies; at the same time, there is a lack of separate management for multiple types of long cables, resulting in low applicability and emergency efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an external communication device for a mobile terminal based on telecommunications services, in order to solve the problems in the prior art, such as complex signal transmission line storage, easy dragging when pulled affecting operation, cumbersome shell disassembly and assembly, difficulty in quick opening and closing to deal with emergencies, lack of separate management of multiple types of long cables, and low applicability and emergency efficiency.

[0006] To achieve the above objectives, the present invention provides an extension communication device for a mobile terminal based on telecommunications services, comprising: The device body has a protective back cover snapped onto its rear side. A take-up seat is fixedly connected to the inner surface of the device body. A cable tray groove is formed on the rear side of the take-up seat. A take-up groove is formed on the bottom rear side of the device body. A partition plate is fixedly connected to the upper surface of the take-up groove. An inner groove is formed on the lower surface of the take-up seat. A telescopic plate is slidably connected to the inner surface of the inner groove. A lower clamping roller is hinged to the inner surface of the telescopic plate. A limit frame is fixedly connected to the lower surface of the take-up seat. An upper clamping roller is hinged to the side surface of the limit frame. A signal enhancement device is installed inside the device body and is used to enhance the device's communication signal. A tool storage device is provided at the bottom of the equipment body. The tool storage device is used to store protective and maintenance tools, so as to facilitate the protection and inspection of the equipment body in special circumstances.

[0007] According to the above technical solution, the device body includes: The display panel is fixedly connected to the inner surface of the front side of the device body; The operation panel is fixedly connected to the inner surface of the front side of the equipment body; The card slot is located on the front side of the take-up connector.

[0008] According to the above technical solution, the device body further includes: A chute, wherein the chute is formed on the rear side of the equipment body; Insert plate, the insert plate being fixedly connected to the front side of the protective back shell; A circular groove is formed on the left side of the equipment body, and a pull seat is slidably connected to the inner surface of the circular groove; Insert shaft, which is fixedly connected to the right side of the pull base.

[0009] According to the above technical solution, the upper surface of the partition plate and the lower surface of the take-up seat are fixedly connected, the telescopic plate and the inner surface of the limiting frame are slidably connected, a spring is provided between the top of the telescopic plate and the upper surface of the inner wall of the inner groove, the insert plate is engaged with the inner surface of the slide groove, the insert shaft slides through the right side of the inner wall of the circular groove and passes through the left side of the inner wall of the slide groove, the insert shaft is engaged with the inner surface of the insert plate, and a spring is provided between the right side of the pull seat and the right side of the inner wall of the circular groove.

[0010] According to the above technical solution, the signal extension device includes: An antenna slot is provided on the rear side of the device body, and a transmission module is fixedly connected to the top inner surface of the antenna slot. An antenna mast is hinged to the inner surface of the transmission module, and an extension rod is slidably connected to the inner surface of the antenna mast.

[0011] According to the above technical solution, the signal extension device further includes: A protective side shell is hinged to the right side of the equipment body, and a sealing plate is fixedly connected to the top front side of the equipment body. A slot is provided on the left side of the protective side shell; L-shaped pressure plate, the L-shaped pressure plate being fixedly connected to the front side of the protective side shell; The card plate is fixedly connected to the upper and lower sides of the right side surface of the protective back cover; Top groove, which is formed on the upper surface of the equipment body.

[0012] According to the above technical solution, the front side of the protective side shell abuts against the circumferential surface of the extension rod, the sealing plate is engaged with the inner surface of the top groove, the locking plate is engaged with the inner surface of the slot, and the right side of the protective back shell abuts against the left side of the protective side shell.

[0013] According to the above technical solution, the tool storage device includes: Storage slot one, wherein the storage slot one is formed on the rear side of the bottom of the equipment body; The second storage slot is located on the rear side of the bottom of the equipment body, and an inner baffle is hinged to the bottom surface of the inner wall of the second storage slot.

[0014] According to the above technical solution, the tool storage device further includes: A rear convex plate is fixedly connected to the front side of the inner baffle, and a clamping frame is fixedly connected to the upper surface of the rear convex plate. A locking rod is slidably connected to the inner surface of the rear convex plate, and a lever is fixedly connected to the circumferential surface of the locking rod; The upper groove is formed on the inner surface of the device body.

[0015] According to the above technical solution, the inner baffle and the bottom surface of the inner wall of the storage groove are hinged, the rear side of the clamping frame and the front side of the inner baffle are fixedly connected, the lever plate and the inner surface of the clamping frame are slidably connected, a spring is provided between the lower surface of the lever plate and the upper surface of the rear convex plate, the locking rod is engaged with the inner surface of the equipment body, and the rear side of the inner baffle and the front side of the protective back shell abut against each other.

[0016] The beneficial effects of this invention are: 1. When the mobile terminal communication signal is poor, the Bluetooth connection can be controlled through the operation panel. If the signal is still poor, open the protective back cover and connect the signal transmission cable directly to the terminal to enhance the transmission strength and ensure communication quality. The communication status is displayed on the panel in real time. When not in use, the upper part of the transmission cable is inserted into the cable tray, the plug is inserted into the slot, and the back cover is closed to protect the cable. Longer transmission cables can be wound into the take-up tray. The partition facilitates the classification and storage of multiple or different types of cables, improving applicability. After storage, pull down the telescopic plate to increase the distance between the lower and upper clamping rollers, allowing the plug to extend. After releasing, the spring drives the lower clamping roller to clamp the cable body, achieving elastic limit. When pulling the cable, only the required length is pulled out without dragging. When retracting the cable, simply push it back. It is easy to use. Before opening the cover, pull the pull base to disengage the insertion shaft from the locking hole, and the back cover can be pushed down. When closing, insert the insertion plate. After releasing, the spring locks the insertion shaft, achieving quick locking. The overall operation is simple and reliable.

[0017] 2. When the communication signal is weak, rotate to open the protective side shell. The antenna rod will pop up under the action of the torsion spring and drive the extension rod to rotate. After it faces upward, pull the extension rod to extend it, forming a signal receiving antenna. The signal is transmitted to the mobile terminal through the transmission module via the device body, ensuring communication quality. When not in use, first retract the extension rod into the antenna rod, and then rotate it downward to insert it into the antenna slot to close it up, reducing the size and making it easier to carry. Closing the protective side shell can protect the antenna rod and prevent it from breaking or being damaged. After the protective side shell is closed, the protective back shell moves up through the insert plate, which drives the locking plate to insert into the slot and lock the side shell. At the same time, the L-shaped pressure plate presses down on the extension rod, and the sealing plate is inserted into the top slot to seal the top of the antenna slot, preventing foreign objects from falling in and sticking to the antenna, thus avoiding signal degradation. The overall operation is convenient, safe and reliable.

[0018] 3. In rainy weather or when the equipment body needs cleaning and disassembly, open the protective back cover and inner baffle to remove the waterproof sleeve and cleaning / opening tools from storage slots one and two. This facilitates equipment maintenance at any time, extends service life, ensures no malfunctions in emergency situations, and protects user safety. The inner baffle prevents tools from falling out during normal carrying. To open the inner baffle, press down on the lever to slide it down within the clamping frame, causing the locking rod to slide down within the rear protrusion and be pulled out of the lock hole. Then, rotate to open. To close, place the tools inside, close the inner baffle, release the lever, and the spring will return it to its original position, causing the locking rod to insert into the lock hole and lock, preventing tools from falling out. Installation is simple, and overall ease of use is improved. Attached Figure Description

[0019] Figure 1 This is a perspective view of the front side of the device of the present invention; Figure 2 This is a rear perspective half-sectional view of the protective back cover of the present invention; Figure 3 This is the invention Figure 2 Enlarged view of A in the middle; Figure 4This is a rear perspective half-sectional view of the device body of the present invention; Figure 5 This is the invention Figure 4 Enlarged view of B in the middle; Figure 6 This is a rear perspective half-sectional view of the signal extension device of the present invention; Figure 7 This is the invention Figure 6 Enlarged view of C; Figure 8 This is the invention Figure 6 Enlarged view of D; Figure 9 This is a rear perspective view of the protective side shell of the present invention; Figure 10 This is a rear perspective half-sectional view of the tool storage device of the present invention; Figure 11 This is the invention Figure 10 A magnified view of E in the middle.

[0020] The markings in the diagram are as follows: 1. Equipment body; 2. Display panel; 3. Operation panel; 4. Protective back shell; 5. Cable take-up base; 6. Cable harness groove; 7. Card slot; 8. Signal extension device; 9. Tool storage device; 10. Cable take-up groove; 11. Partition plate; 12. Inner groove; 13. Limiting frame; 14. Upper clamping roller; 15. Telescopic plate; 16. Lower clamping roller; 17. Slide groove; 18. Insert plate; 19. Circular groove; 20. Pull base; 21. Insert shaft; 81. Antenna slot; 82. Transmission module; 83. Antenna mast; 84. Extension rod; 85. Protective side shell; 86. Slot; 87. L-shaped pressure plate; 88. Card plate; 89. Sealing plate; 810. Top groove; 91. Storage slot one; 92. Storage slot two; 93. Inner baffle; 94. Rear protruding plate; 95. Clamping frame; 96. Locking rod; 97. Toggle plate; 98. Upper groove. Detailed Implementation

[0021] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Example 1, as Figures 1-11As shown, an extended communication device for a mobile terminal based on telecommunications services includes a device body 1. A protective back cover 4 is snapped onto the rear side of the device body 1. A cable take-up base 5 is fixedly connected to the inner surface of the device body 1. A cable take-up groove 6 is formed on the rear side of the cable take-up base 5. A cable take-up groove 10 is formed on the bottom rear side of the device body 1. A partition plate 11 is fixedly connected to the upper surface of the cable take-up groove 10. An inner groove 12 is formed on the lower surface of the cable take-up base 5. A telescopic plate 15 is slidably connected to the inner surface of the inner groove 12. A lower clamping roller 16 is hinged to the inner surface of the telescopic plate 15. A limit frame 13 is fixedly connected to the lower surface of the cable take-up base 5. An upper clamping roller 14 is hinged to the side surface of the limit frame 13. When the mobile terminal communication signal is poor, it can be operated... The control panel 3 controls the Bluetooth connection. If the signal is still weak, the protective back cover 4 is opened and the signal transmission cable is directly connected to the terminal to enhance the transmission strength and ensure communication quality. The signal extension device 8 is located inside the device body 1 to enhance the device's communication signal. The tool storage device 9 is located at the bottom of the device body 1 to store protective and maintenance tools, facilitating protection and inspection of the device body 1 in special circumstances. The device body 1 includes a display panel 2, which is fixedly connected to the inner front surface of the device body 1. The operation panel 3 is fixedly connected to the inner front surface of the device body 1. The slot 7 is located on the front side of the cable take-up base 5. The communication status is displayed on the panel in real time. When not in use, the transmission... The cable section is inserted into the cable tray 6, and the plug is inserted into the slot 7. Closing the back cover protects the cable. Longer transmission lines can be wound into the take-up tray 10. The partition 11 facilitates the classification and storage of multiple or different types of cables, improving applicability. The device body 1 also includes a slide 17, which is located on the rear side of the device body 1. The insertion plate 18 is fixedly connected to the front side of the protective back cover 4. A circular groove 19 is located on the left side of the device body 1. A pull seat 20 is slidably connected to the inner surface of the circular groove 19. The insertion shaft 21 is fixedly connected to the right side of the pull seat 20. After storage, pulling down the telescopic plate 15 increases the distance between the lower clamping roller 16 and the upper clamping roller 14, allowing the plug to extend. After releasing, the spring drives the lower clamping roller 16 to clamp the cable body, achieving elastic limiting. When pulling the cable, only the required length is pulled out. It is easy to use as it does not drag and can be pushed back when retracting the cable. The upper surface of the partition 11 and the lower surface of the cable retractor 5 are fixedly connected. The telescopic plate 15 and the inner surface of the limiting frame 13 are slidably connected. A spring is provided between the top of the telescopic plate 15 and the upper surface of the inner wall of the inner groove 12. The insert plate 18 and the inner surface of the slide groove 17 are engaged. The insert shaft 21 slides through the right side of the inner wall of the circular groove 19 and passes through the left side of the inner wall of the slide groove 17. The insert shaft 21 and the inner surface of the insert plate 18 are engaged. A spring is provided between the right side of the pull seat 20 and the right side of the inner wall of the circular groove 19. Before opening the shell, pull the pull seat 20 to disengage the insert shaft 21 from the lock hole and push down the back shell. When closing, insert the insert plate 18. After releasing, the spring locks the insert shaft 21, achieving quick locking. The overall operation is simple and reliable.

[0023] Working principle: When the mobile terminal's communication signal is weak, remove the device and control it to connect to the mobile terminal via Bluetooth through the operation panel 3. If the Bluetooth signal reception quality is poor, open the protective back cover 4 of the device body 1 and directly connect the signal transmission line inside the device body 1 to the mobile terminal to enhance signal transmission strength and ensure communication quality. Communication status and other data are displayed on the operation panel 3 after the device is connected to the mobile terminal, ensuring the user can monitor the communication status in real time. When the mobile terminal no longer needs to connect to an external communication device, unplug the signal transmission line from the mobile terminal, insert the upper part of the transmission line into the cable tray 6 on the front side of the cable take-up holder 5, and then insert the plug into the slot 7 to complete the transmission. The quick winding and securing of the cable, followed by closing the protective back cover 4, protects the signal transmission cable, ensuring its effective function in emergencies and enhancing the equipment's safety. For longer signal transmission cables, winding the cable into the take-up groove 10 facilitates the safe handling of cables of varying lengths, thus improving the equipment's versatility. The partition 11 divides the take-up groove 10, allowing it to accommodate multiple and various types of signal transmission cables, further enhancing its applicability. After the signal transmission cable is taken into the take-up groove 10, the telescopic plate 15 is pulled down, causing it to slide and descend within the inner groove 12 and the limiting frame 13, thus lowering the lower clamping roller 16. The increased gap between roller 16 and upper clamping roller 14 allows the signal transmission line plug to extend from back to front between the lower clamping roller 16 and upper clamping roller 14. Then, the telescopic plate 15 is released. At this point, the telescopic plate 15 rises due to the spring between its top surface and the top surface of the inner wall of the groove 12, causing the lower clamping roller 16 to rise as well. This allows the lower clamping roller 16 and upper clamping roller 14 to clamp the cable, achieving elastic limiting of the signal transmission line. Therefore, during cable pulling, it is not necessary to pull out the entire cable; only a short distance needs to be pulled out as needed. The cable is limited by the lower clamping roller 16 and upper clamping roller 14 during pulling out, preventing dragging and improving ease of use. When retracting the cable, simply push the pulled-out section back. The cable reel 10 makes cable reeling more convenient. Before opening the protective back cover 4, pull the pull base 20 to the left, allowing it to slide to the left within the circular groove 19. As the pull base 20 slides to the left, it drives the insertion shaft 21 to slide to the left on the inner surface of the equipment body 1 and pull it out of the locking hole on the insertion plate 18. At this time, push the protective back cover 4 downwards. The protective back cover 4 can drive the insertion plate 18 to slide downwards within the slide groove 17, thereby detaching the entire protective back cover 4 from the equipment body 1. Conversely, when it is necessary to close the protective back cover 4, simply insert it upwards into the slide groove 17 through the insertion plate 18. After the insertion plate 18 is fully inserted into the slide groove 17, release the pull base 20. At this time, the pull base 20 slides to the right and resets due to the influence of the spring set between its right side and the right side of the inner wall of the circular groove 19.This causes the insertion shaft 21 to be inserted into the locking hole on the insertion plate 18, locking the device body 1 to the protective back cover 4 via the sliding groove 17 and the insertion plate 18. This allows for quick and easy installation and fixation of the protective back cover 4, further improving the ease of use of the device.

[0024] Example 2, as Figures 1-11 As shown, based on Embodiment 1, the signal extension device 8 includes an antenna slot 81, which is located on the rear side of the device body 1. A transmission module 82 is fixedly connected to the top inner surface of the antenna slot 81. An antenna rod 83 is hinged to the inner surface of the transmission module 82. An extension rod 84 is slidably connected to the inner surface of the antenna rod 83. When the communication signal is weak, the protective side shell 85 is rotated open. The antenna rod 83 is ejected upward by the torsion spring and drives the extension rod 84 to rotate. After it faces upward, the extension rod 84 is pulled to extend, forming a signal receiving antenna. The signal is transmitted to the mobile terminal through the device body 1 via the transmission module 82, ensuring communication quality. The signal extension device 8 also includes a protective side shell 85, which is hinged to the right side of the device body 1. A sealing plate 89 is fixedly connected to the top front side of the device body 1. A slot 86 is located on the left side of the protective side shell 85. An L-shaped pressure plate 87 is fixedly connected to the protective side shell 85. On the front side, the locking plate 88 is fixedly connected to the upper and lower sides of the right side of the protective back shell 4. The top groove 810 is opened on the upper surface of the device body 1. When not in use, the extension rod 84 is first retracted into the antenna rod 83, and then rotated downwards to insert it into the antenna slot 81 to shrink the size and make it easier to carry. Closing the protective side shell 85 can protect the antenna rod 83 and prevent it from breaking or being damaged. The front side of the protective side shell 85 abuts against the circumferential surface of the extension rod 84. The sealing plate 89 is engaged with the inner surface of the top groove 810. The locking plate 88 is engaged with the inner surface of the slot 86. The right side of the protective back shell 4 abuts against the left side of the protective side shell 85. After the protective side shell 85 is closed, the protective back shell 4 moves upward through the insert plate 18 to drive the locking plate 88 into the slot 86 to lock the side shell. At the same time, the L-shaped pressure plate 87 presses down on the extension rod 84. The sealing plate 89 is inserted into the top groove 810 to seal the top of the antenna slot 81, preventing foreign objects from falling in and sticking to the antenna, avoiding signal degradation. The overall operation is convenient, safe and reliable.

[0025] Working principle: When the user is in an area with weak communication signal, the protective side shell 85 can be rotated open. At this time, the antenna rod 83 is rotated upward and pops out due to the torsion spring set at its hinge with the transmission module 82. When the antenna rod 83 rotates, it drives the extension rod 84 to rotate. When the end of the antenna rod 83 protrudes upward, the extension rod 84 is pulled to extend, thus forming a signal receiving antenna. After the antenna receives the signal, it can transmit it to the device body 1 through the transmission module 82, and then transmit the signal to the mobile terminal through the device body 1 and the signal transmission line, further ensuring the quality of the communication signal. When it is not necessary to unfold the antenna rod 83 and the extension rod 84, first retract the extension rod 84 back into the antenna rod 83, and then rotate the antenna rod 83 downward to insert it into the antenna slot 81, thus completing the folding, thereby reducing the size of the device body 1, making it easier to carry, improving the ease of use of the device, and the antenna rod 83 retracts the antenna. After closing the slot 81, the protective side shell 85 is closed again, which can protect the antenna mast 83 from breakage and damage, ensuring the safety of the equipment and improving the emergency communication effect of the equipment. After the protective side shell 85 is rotated closed, the protective back shell 4 is slid upward into the slide groove 17 through the insert plate 18. When the protective back shell 4 moves upward, it drives the locking plate 88 to slide upward into the slot 86, thereby locking the protective side shell 85 and promoting the protective effect of the protective side shell 85 on the antenna mast 83. After the protective side shell 85 is closed, it drives the L-shaped pressure plate 87 to rotate and press on the extension rod 84, thereby pressing the extension rod 84 and the antenna mast 83 stably in the antenna slot 81. At the same time as the protective side shell 85 is closed, it also drives the sealing plate 89 to be inserted into the top slot 810, thereby sealing the top of the antenna slot 81 and preventing foreign objects from falling into the antenna slot 81 and sticking to the antenna mast 83 and the extension rod 84, which would cause signal degradation.

[0026] Example 3, as Figures 1-11As shown, based on Embodiment 1, the tool storage device 9 includes a storage slot 1 91, which is located on the rear side of the bottom of the equipment body 1. A storage slot 2 92 is also located on the rear side of the bottom of the equipment body 1. An inner baffle 93 is hinged to the bottom surface of the inner wall of the storage slot 2 92. In rainy weather or when the equipment body 1 needs cleaning and disassembly, the protective back cover 4 and the inner baffle 93 can be opened to remove waterproof sleeves and cleaning / opening tools from the storage slots 1 91 and 2 92. This facilitates equipment maintenance, extends service life, ensures no malfunctions in emergency situations, and protects user safety. The tool storage device 9 also includes a rear protrusion 94, which is fixedly connected to the front side of the inner baffle 93. A clamping frame 95 is fixedly connected to the upper surface of the rear protrusion 94. A locking rod 96 is slidably connected to the inner surface of the rear protrusion 94. A lever 97 is fixedly connected to the circumferential surface of the locking rod 96. An upper groove 9... 8 is located on the inner surface of the equipment body 1. The inner baffle 93 can block the tool and prevent it from falling out during normal carrying. When the inner baffle 93 is opened, press down the lever 97 to make it slide down in the clamping frame 95, which drives the locking rod 96 to slide down in the rear protrusion 94 and be pulled out from the lock hole. It can then be rotated to open. The inner baffle 93 and the bottom surface of the inner wall of the storage groove 91 are hinged. The rear side of the clamping frame 95 and the front side of the inner baffle 93 are fixedly connected. The lever 97 and the inner surface of the clamping frame 95 are slidably connected. A spring is provided between the lower surface of the lever 97 and the upper surface of the rear protrusion 94. The locking rod 96 is engaged with the inner surface of the equipment body 1. The rear side of the inner baffle 93 and the front side of the protective back shell 4 abut against each other. When closing, after putting in the tool, close the inner baffle 93, release the lever 97, and the spring will make it return to its original position, which will drive the locking rod 96 to insert into the lock hole and lock it, preventing the tool from falling out. The installation is simple and the overall usability is improved.

[0027] Working Principle: In rainy weather, or when the equipment body 1 has not been cleaned for a long time, or when it is necessary to disassemble the outer shell of the equipment body 1, open the protective back cover 4, and then open the inner baffle 93. At this time, the waterproof sleeve and cleaning tools can be taken out from the storage slot 1 91 and storage slot 2 92, which facilitates the protection and maintenance of the equipment body 1 at any time, extends the service life of the equipment body 1, ensures that the equipment body 1 will not malfunction in emergency environments, and protects the user's safety. The inner baffle 93 can block the tools, preventing them from falling out of the storage slot 1 91 and storage slot 2 92 under normal circumstances, making them easy for the user to carry and improving the ease of use of the device. When it is necessary to open the inner baffle 93, press down on the lever 97, so that the lever 97 is in The clamping frame 95 slides down, and when the lever 97 descends, it drives the locking rod 96 to slide down within the rear convex plate 94. At this time, the locking rod 96 is pulled out from the locking hole between the upper groove 98, the first storage groove 91, and the second storage groove 92, thereby unlocking the rear convex plate 94 and the equipment body 1, and then unlocking the inner baffle 93. At this time, the inner baffle 93 can be rotated open. Conversely, after the tool is placed into the first storage groove 91 and the second storage groove 92, the inner baffle 93 is closed. At this time, the lever 97 is released, and the lever 97 is elastically reset upward due to the influence of the spring set between its lower surface and the upper surface of the rear convex plate 94, and drives the locking rod 96 to insert upward into the locking hole to lock the inner baffle 93, preventing the tool from falling out. The installation process is simple, further improving the ease of use of the device.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An extension communication device for a mobile terminal based on telecommunications services, characterized in that, include: The equipment body (1) has a protective back shell (4) snapped onto its rear side. A take-up seat (5) is fixedly connected to the inner surface of the equipment body (1). A wire-gathering groove (6) is opened on the rear side of the take-up seat (5). A take-up groove (10) is opened on the bottom rear side of the equipment body (1). A partition plate (11) is fixedly connected to the upper surface of the take-up groove (10). An inner groove (12) is opened on the lower surface of the take-up seat (5). A telescopic plate (15) is slidably connected to the inner surface of the inner groove (12). A lower clamping roller (16) is hinged to the inner surface of the telescopic plate (15). A limit frame (13) is fixedly connected to the lower surface of the take-up seat (5). An upper clamping roller (14) is hinged to the side surface of the limit frame (13). A signal extension device (8) is installed inside the device body (1) and is used to enhance the device's communication signal. Tool storage device (9) is located at the bottom of the equipment body (1). The tool storage device (9) is used to store protective and maintenance tools, so as to protect and inspect the equipment body (1) in special circumstances.

2. The extended communication device for a mobile terminal based on telecommunications services according to claim 1, characterized in that, The device body (1) includes: Display panel (2), which is fixedly connected to the inner front surface of the device body (1); Operation panel (3), the operation panel (3) is fixedly connected to the inner surface of the front side of the equipment body (1); Card slot (7) is located on the front side of take-up seat (5).

3. The extended communication device for a mobile terminal based on telecommunications services according to claim 2, characterized in that, The device body (1) also includes: The slide (17) is formed on the rear side of the equipment body (1); Insert plate (18), which is fixedly connected to the front side of the protective back shell (4); A circular groove (19) is formed on the left side of the equipment body (1), and a pull seat (20) is slidably connected to the inner surface of the circular groove (19). Insert shaft (21), which is fixedly connected to the right side of pull seat (20).

4. The extended communication device for a mobile terminal based on telecommunications services according to claim 3, characterized in that, The upper surface of the partition (11) and the lower surface of the take-up seat (5) are fixedly connected. The inner surface of the telescopic plate (15) and the limiting frame (13) are slidably connected. A spring is provided between the top of the telescopic plate (15) and the upper surface of the inner wall of the inner groove (12). The insert plate (18) and the inner surface of the slide groove (17) are engaged. The insert shaft (21) slides through the right side of the inner wall of the circular groove (19) and passes through the left side of the inner wall of the slide groove (17). The insert shaft (21) and the inner surface of the insert plate (18) are engaged. A spring is provided between the right side of the pull seat (20) and the right side of the inner wall of the circular groove (19).

5. The extended communication device for a mobile terminal based on telecommunications services according to claim 4, characterized in that, The signal extension device (8) includes: Antenna slot (81) is located on the rear side of the device body (1), and a transmission module (82) is fixedly connected to the top inner surface of the antenna slot (81). Antenna mast (83) is hinged to the inner surface of the transmission module (82), and an extension rod (84) is slidably connected to the inner surface of the antenna mast (83).

6. The extended communication device for a mobile terminal based on telecommunications services according to claim 5, characterized in that, The signal extension device (8) further includes: A protective side shell (85) is hinged to the right side of the equipment body (1), and a sealing plate (89) is fixedly connected to the front top side of the equipment body (1). Slot (86), said slot (86) is provided on the left side of the protective side shell (85); L-shaped pressure plate (87), the L-shaped pressure plate (87) is fixedly connected to the front side of the protective side shell (85); The card plate (88) is fixedly connected to the upper and lower sides of the right side surface of the protective back shell (4); Top groove (810) is formed on the upper surface of the device body (1).

7. The extended communication device for a mobile terminal based on telecommunications services according to claim 6, characterized in that, The front side of the protective side shell (85) abuts against the circumferential surface of the extension rod (84), the sealing plate (89) and the inner surface of the top groove (810) are engaged, the clamping plate (88) and the inner surface of the slot (86) are engaged, and the right side of the protective back shell (4) abuts against the left side of the protective side shell (85).

8. The extended communication device for a mobile terminal based on telecommunications services according to claim 7, characterized in that, The tool storage device (9) includes: Storage slot 1 (91) is located on the rear side of the bottom of the equipment body (1); Storage slot two (92) is located on the rear side of the bottom of the equipment body (1), and an inner baffle (93) is hinged to the bottom surface of the inner wall of storage slot two (92).

9. The extended communication device for a mobile terminal based on telecommunications services according to claim 8, characterized in that, The tool storage device (9) further includes: A rear convex plate (94) is fixedly connected to the front side of the inner baffle (93), and a clamping frame (95) is fixedly connected to the upper surface of the rear convex plate (94). Locking rod (96), which is slidably connected to the inner surface of the rear convex plate (94), and a lever plate (97) is fixedly connected to the circumferential surface of the locking rod (96). Upper groove (98) is formed on the inner surface of the device body (1).

10. The extended communication device for a mobile terminal based on telecommunications services according to claim 9, characterized in that, The inner baffle (93) and the bottom of the inner wall of the storage groove (91) are hinged together. The rear side of the clamping frame (95) and the front side of the inner baffle (93) are fixedly connected. The lever (97) and the inner surface of the clamping frame (95) are slidably connected. A spring is provided between the lower surface of the lever (97) and the upper surface of the rear protrusion plate (94). The locking rod (96) and the inner surface of the equipment body (1) are engaged. The rear side of the inner baffle (93) and the front side of the protective back shell (4) abut against each other.

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