Transmitting one-transmitting multi-receiving transmitter

Abstract

The utility model relates to the technical field of signal transmission equipment, and discloses a transmission one-transmitting multi-receiving transmitter which comprises an upper cover plate and a lower shell. Bolts with clamping grooves are fixedly connected to four corners of the lower surface of the upper cover plate, and a control panel is mounted on the upper surface; the four corners of the inner bottom of the lower shell are fixedly connected with sleeves and further fixedly connected with a supporting frame, a sliding rod is sleeved with a sliding hole of the lower shell, the sliding rod is provided with a spring and a clamping head, and the clamping head is connected with a clamping groove in a clamped mode and connected with a shifting sliding button penetrating through the lower shell through a connecting rod. The lower surface of the upper cover plate and the inner bottom of the lower shell are fixedly connected with buckles and positioning pins, a display and control mainboard is arranged below the upper cover plate, and a battery box, a battery, a fixed transverse plate, a signal transceiving and interface mainboard and an external antenna are arranged in the lower shell. The main boards are connected with the positioning pins and the side buckles through the pin holes, the main boards are electrically connected through the elastic terminals and the contact terminals, and the signal receiving and transmitting main board can be replaced by an independent receiving and transmitting main board. The utility model solves the problems that the conventional transmitter needs a tool to disassemble and assemble, the mainboard needs to be integrally replaced, the wire arrangement is disordered and the cost is high, and has the advantages of convenience in disassembly and assembly, low cost and strong applicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of signal transmission equipment, specifically, it relates to a transmitter that transmits one signal and receives multiple receivers. Background Technology

[0002] In the field of signal transmission, multi-transmitter transmitters are crucial devices for achieving efficient signal distribution and transmission, and are widely used in various scenarios such as communication, monitoring, and data acquisition. Currently, commercially available multi-transmitter transmitters suffer from numerous structural design deficiencies, causing significant inconvenience in practical use and maintenance.

[0003] Most existing transmitters use screws to secure the casing. When internal components malfunction and require repair or replacement, the casing must be disassembled with screwdrivers or other tools, a cumbersome and time-consuming process that can damage the casing or internal components due to improper handling. Furthermore, the internal motherboard modules of existing transmitters are typically a single, integrated design, connected by numerous ribbon cables. If a component in one module fails, the entire motherboard must be replaced, significantly increasing repair costs and resulting in a severe waste of resources. In addition, the tangled cabling creates a chaotic internal structure, hindering quick troubleshooting and greatly complicating motherboard disassembly and installation, severely impacting repair efficiency.

[0004] In view of the problems existing in the above-mentioned technologies, there is an urgent need to design a transmitter with quick disassembly function, individual replacement of each motherboard module, and simple internal structure to solve the problems of inconvenient maintenance, high cost, and waste of resources of existing equipment. Utility Model Content

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A transmitter capable of transmitting multiple signals includes an upper cover and a lower housing. Pins are vertically fixed at the four corners of the lower surface of the upper cover, and each pin has a slot at its end. A control panel is mounted on the upper surface of the upper cover. The upper opening of the lower housing corresponds to the shape of the upper cover, and sleeves are vertically fixed at the four corners of the lower housing's inner bottom. These sleeves correspond to and are inserted into the pins. A support frame is vertically fixed to the lower housing's inner bottom, and a sliding hole is provided at the upper end of the support frame. A sliding rod is movably fitted inside the sliding hole.

[0007] In a preferred embodiment of this utility model, a spring is sleeved on the slide rod, a limit block is fixedly connected to one end of the slide rod near the support frame, and a locking head is fixedly connected to the other end of the slide rod. The locking head passes through the side of the sleeve and is movably sleeved with it. The locking head corresponds to the locking groove and is locked with it.

[0008] In a preferred embodiment of this utility model, a connecting rod is fixedly connected to the side of the card head, and a sliding button is fixedly connected to one outer end of the connecting rod. The connecting rod passes through the side plate of the lower housing and is movably sleeved with it. A sliding button frame is fixedly installed on the side of the lower housing, and the sliding button frame corresponds to the sliding button and is slidably sleeved with it.

[0009] In a preferred embodiment of this utility model, several buckles and positioning pins are fixedly connected to the lower surface of the upper cover plate and the inner bottom of the lower housing. A display main board and a control main board are provided below the control panel of the upper cover plate. A third elastic terminal and a second contact terminal are installed on the display main board. A second elastic terminal and a first contact terminal are installed on the board body of the control main board. The second elastic terminal corresponds to the second contact terminal and is electrically connected to it.

[0010] In a preferred embodiment of this utility model, pin holes are provided at the corners of both the display motherboard and the control motherboard. The pin holes correspond to the positioning pins and are inserted into them. The sides of both the display motherboard and the control motherboard correspond to the buckles and are snapped into place at the corresponding positions.

[0011] In a preferred embodiment of this utility model, a battery box is fixed to the inner bottom of the lower housing, a battery is installed inside the battery box, a fixed horizontal plate is provided above the battery, a plurality of interface holes are provided on one side of the lower housing, a signal transceiver main board and an interface main board are provided inside the lower housing, a first elastic terminal is installed on the panel of the signal transceiver main board, the first elastic terminal corresponds to the first contact terminal and is electrically connected to it.

[0012] In a preferred embodiment of this utility model, a third contact terminal is installed on the board body of the interface motherboard. The third contact terminal corresponds to and is electrically connected to the third elastic terminal. Several interfaces on the side of the interface motherboard correspond one-to-one with the interface holes opened on the side of the lower housing. An antenna is externally installed on the interface of the interface motherboard.

[0013] In a preferred embodiment of this utility model, pin holes are provided at the corners of the fixed horizontal plate, the signal transceiver main board, and the interface main board. Each pin hole corresponds to a positioning pin fixed inside the lower housing and is inserted into it. The side edges of the fixed horizontal plate, the signal transceiver main board, and the interface main board correspond to buckles fixed inside the lower housing and are snapped into them.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This multi-transmitter transmitter utilizes a quick-release self-locking mechanism comprised of a pin, sleeve, slide bar, latch, spring, connecting rod, and toggle switch. This mechanism enables rapid disassembly and installation of the upper cover and lower housing. Operators only need to pinch the toggle switches on both sides of the housing with their thumbs and ring fingers to unlock the mechanism and remove the upper cover. The entire process requires no tools, making it convenient, significantly reducing disassembly time, and improving maintenance efficiency.

[0016] 2. In this utility model, each motherboard module (display motherboard, control motherboard, signal transceiver motherboard, interface motherboard) is fixed by clips and positioning pins, and the motherboards are electrically connected to each other through flexible terminals and contact terminals, replacing the traditional ribbon cable connection. This design allows any motherboard module to be removed and replaced individually. When a component of a module is damaged, it is not necessary to replace the entire motherboard, effectively reducing maintenance costs and avoiding resource waste. At the same time, the connection method of flexible terminals and contact terminals reduces the internal mess of ribbon cables, making the internal structure simpler and facilitating the staff to troubleshoot and replace motherboard modules.

[0017] 3. The signal transceiver motherboard can be replaced with a separate receiving or transmitting motherboard according to actual needs, which improves the applicability of the transmitter, meets the usage needs in different scenarios, further reduces costs, and prevents unnecessary waste of resources.

[0018] 4. The design of the clips and positioning pins allows for the installation and removal of each motherboard module, as well as the upper cover and lower housing, without the need for screwdrivers or other tools. This enables quick assembly and disassembly, which not only facilitates daily maintenance and repair work but also reduces the risk of damage to the equipment due to improper use of tools.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 A three-dimensional front view diagram of a transmitter that transmits one signal to multiple receivers;

[0022] Figure 2A three-dimensional rear view diagram of a transmitter that transmits one signal to multiple receivers;

[0023] Figure 3 A bottom-view schematic diagram of the cover plate for a multi-receiver transmitter;

[0024] Figure 4 An exploded view of the internal structure of the cover plate of a multi-receiver transmitter.

[0025] Figure 5 Top view of the casing of a transmitter for transmitting multiple receivers;

[0026] Figure 6 An exploded view of the internal structure of a transmitter for transmitting multiple receivers;

[0027] Figure 7 An enlarged schematic diagram of the quick-release mechanism structure for transmitting a single transmitter to multiple receivers.

[0028] In the diagram: 1. Top cover; 2. Lower housing; 3. Control panel; 4. Antenna; 5. Slide knob; 6. Pin; 7. Positioning pin; 8. Third elastic terminal; 9. Snap fastener; 10. Display mainboard; 11. Second contact terminal; 12. Second elastic terminal; 13. First contact terminal; 14. Control mainboard; 15. Fixed cross plate; 16. Battery; 17. Signal transceiver mainboard; 18. First elastic terminal; 19. Sleeve; 20. Support frame; 21. Connecting rod; 22. Interface mainboard; 23. Third contact terminal; 24. Battery box; 25. Slot; 26. Spring; 27. Slide rod; 28. Clip head. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0030] like Figures 1 to 7 As shown, the transmitter for transmitting multiple receivers includes an upper cover plate 1 and a lower housing 2. Pins 6 are vertically fixed at the four corners of the lower surface of the upper cover plate 1. The pins 6 have slots 25 at their ends. A control panel 3 is installed on the upper surface of the upper cover plate 1. The shape of the upper opening of the lower housing 2 corresponds to that of the upper cover plate 1. Sleeves 19 are vertically fixed at the four corners of the inner bottom of the lower housing 2. The sleeves 19 correspond to the pins 6 and are inserted into them. A support frame 20 is vertically fixed at the inner bottom of the lower housing 2. A sliding hole is opened at the upper end of the support frame 20. A sliding rod 27 is movably sleeved inside the sliding hole.

[0031] In this setup, the corresponding insertion of pin 6 and sleeve 19 provides initial positioning for the assembly of upper cover plate 1 and lower housing 2, ensuring precise docking of the upper and lower housings and preventing assembly misalignment; the pin and sleeve structure distributed at the four corners can evenly distribute the force on the housing, improving the overall structural stability; the support frame 20 provides movable support for slide rod 27 through sliding holes, allowing slide rod 27 to move in a fixed direction, laying the foundation for the subsequent implementation of the self-locking mechanism; the control panel 3 allows operators to view the transmitter's operating parameters and adjust functions in real time, improving the ease of operation of the equipment.

[0032] like Figures 1 to 7 As shown, in a specific embodiment, a spring 26 is sleeved on the body of the slide rod 27, a limit block is fixedly connected to one end of the slide rod 27 near the support frame 20, and a locking head 28 is fixedly connected to the other end of the slide rod 27. The locking head 28 passes through the side of the sleeve 19 and is movably sleeved with it. The locking head 28 corresponds to the locking groove 25 and is locked with it.

[0033] In this configuration, spring 26 has an elastic reset function. When pin 6 is inserted into sleeve 19, spring 26 can push slide rod 27 to drive the locking head 28 to automatically engage with slot 25, thereby achieving self-locking fixation between upper cover plate 1 and lower housing 2 and preventing the housing from loosening during movement or vibration. The limiting block can restrict the movement range of slide rod 27 and prevent slide rod 27 from coming out of the sliding hole of support frame 20, ensuring the structural integrity of the self-locking mechanism. The precise engagement of locking head 28 and slot 25 can enhance the firmness of housing connection and provide a reliable unlocking trigger point for subsequent quick disassembly.

[0034] like Figures 1 to 7 As shown, in a specific embodiment, a connecting rod 21 is fixedly connected to the side of the card head 28, and a toggle button 5 is fixedly connected to one end of the outer side of the connecting rod 21. The connecting rod 21 passes through the side plate of the lower housing 2 and is movably sleeved with it. A toggle frame is fixedly installed on the side of the lower housing 2. The toggle frame corresponds to the toggle button 5 and is slidably sleeved with it.

[0035] In this configuration, the connecting rod 21 serves as a power transmission component, transmitting the operating force of the sliding button 5 to the locking head 28, thereby separating the locking head 28 from the locking slot 25 and providing a power transmission path for quick-release of the housing. The sliding button frame restricts the movement direction of the sliding button 5, ensuring that the sliding button 5 slides along a fixed trajectory and preventing operational deviation from causing unlocking failure. The two sliding buttons 5 on each side with opposite directions of movement, combined with the operation method of the thumbs and ring fingers, can simultaneously unlock multiple self-locking mechanisms, significantly shortening the housing disassembly time, eliminating the need for screwdrivers and other tools, and improving maintenance efficiency.

[0036] like Figures 1 to 7As shown, in a specific embodiment, several buckles 9 and positioning pins 7 are fixedly connected to the lower surface of the upper cover plate 1 and the inner bottom of the lower housing 2. A display main board 10 and a control main board 14 are provided below the control panel 3 of the upper cover plate 1. A third elastic terminal 8 and a second contact terminal 11 are installed on the display main board 10. A second elastic terminal 12 and a first contact terminal 13 are installed on the board of the control main board 14. The second elastic terminal 12 corresponds to the second contact terminal and is electrically connected to it.

[0037] In this setup, the positioning pin 7 precisely positions the display motherboard 10 and the control motherboard 14, ensuring accurate terminal connection after motherboard installation and preventing electrical connection failure due to positional misalignment. The latch 9 secures the motherboard to the designated position through elastic locking, preventing it from shaking during device operation and ensuring stable terminal contact. The electrical connection between the second elastic terminal 12 and the second contact terminal replaces the traditional ribbon cable connection, reducing internal wiring clutter and the risk of ribbon cable aging and poor contact. It also makes signal transmission between motherboards more direct and improves data transmission stability. The display motherboard 10 can provide feedback on the device's operating status through the control panel 3, while the control motherboard 14 controls the transmitter's core functions. Together, they ensure the normal operation of the device.

[0038] like Figures 1 to 7 As shown, in a specific embodiment, pin holes are provided at the corners of both the display motherboard 10 and the control motherboard 14. The pin holes correspond to the positioning pins 7 and are inserted into them. The sides of both the display motherboard 10 and the control motherboard 14 correspond to the buckles 9 and are snapped into place at the corresponding positions.

[0039] In this setup, the pin holes at the corners of the motherboard and the insertion of the positioning pin 7 can restrict the motherboard displacement from multiple directions, further improving the accuracy of motherboard installation. This is especially convenient for quickly aligning the installation position when repairing or replacing the motherboard, reducing debugging time. The corresponding engagement between the side of the motherboard and the clip 9 ensures that the motherboard is subjected to more even force, preventing excessive local force from causing motherboard deformation. At the same time, the detachable feature of the clip 9 allows the motherboard to be quickly disassembled without the aid of tools, reducing the difficulty of repair. For example, when a single motherboard module fails, the faulty motherboard can be removed simply by prying the clip, without disassembling the entire internal structure of the device.

[0040] like Figures 1 to 7 As shown, in a specific embodiment, a battery box 24 is fixed to the inner bottom of the lower housing 2, a battery 16 is installed inside the battery box 24, a fixed horizontal plate 15 is provided above the battery 16, a number of interface holes are opened on one side of the lower housing 2, a signal transceiver main board 17 and an interface main board 22 are provided inside the lower housing 2, a first elastic terminal 18 is installed on the panel of the signal transceiver main board 17, the first elastic terminal 18 corresponds to the first contact terminal 13 and is electrically connected to it.

[0041] In this configuration, the battery box 24 provides a fixed installation space for the battery 16, preventing the battery 16 from shaking inside the device and ensuring power supply stability; the fixed horizontal plate 15 can limit the battery 16 from above, further enhancing the battery installation's firmness and preventing poor electrode contact due to battery vibration; the interface hole provides an exposed channel for the external interface of the interface motherboard 22, facilitating the connection of external components such as the antenna 4; the electrical connection between the first elastic terminal 18 and the first contact terminal 13 enables signal communication between the control motherboard 14 and the signal transceiver motherboard 17, allowing control commands to be accurately transmitted to the signal transceiver motherboard 17, ensuring that the transmitter's signal transceiver function operates according to preset parameters, such as controlling the signal transceiver frequency and power.

[0042] like Figures 1 to 7 As shown, in a specific embodiment, a third contact terminal 23 is installed on the board of the interface motherboard 22. The third contact terminal 23 corresponds to the third elastic terminal 8 and is electrically connected to it. Several interfaces on the side of the interface motherboard 22 correspond one-to-one with the interface holes opened on the side of the lower housing 2. An antenna 4 is externally installed on the interface of the interface motherboard 22.

[0043] In this setup, the electrical connection between the third contact terminal 23 and the third elastic terminal 8 establishes a signal transmission channel between the display motherboard 10 and the interface motherboard 22, allowing the working status of the interface motherboard 22 (such as interface connection status and antenna signal strength) to be fed back to the control panel 3 through the display motherboard 10. The one-to-one correspondence between the side interface of the interface motherboard 22 and the interface hole of the lower housing 2 ensures that external components (such as the antenna 4) can be installed smoothly, avoiding installation difficulties caused by interface misalignment. The external installation of the antenna 4 can enhance the signal transmission and reception range and strength of the transmitter, especially in complex environments (such as multi-obstruction and long-distance transmission scenarios), improving the stability and reliability of signal transmission and meeting the signal coverage requirements of one transmitter and multiple receivers.

[0044] like Figures 1 to 7 As shown, in a specific embodiment, pin holes are provided at the corners of the fixed horizontal plate 15, the signal transceiver main board 17, and the interface main board 22. The pin holes correspond one-to-one with the positioning pins 7 fixed inside the lower housing 2 and are inserted into them. The side edges of the fixed horizontal plate 15, the signal transceiver main board 17, and the interface main board 22 correspond one-to-one with the buckles 9 fixed inside the lower housing 2 and are snapped into them.

[0045] In this setup, the fixed horizontal plate 15, signal transceiver main board 17, and interface main board 22 are connected to the positioning pin 7 through pin holes, achieving a precise layout of multiple components within the lower housing 2. This ensures that reasonable installation gaps are reserved between each component, preventing interference between components. The corresponding snap-fit ​​of the sides of each component with the buckle 9 forms a multi-directional fixing structure, enabling the fixed horizontal plate 15 to stably limit the battery 16, and ensuring the accuracy of terminal connection between the signal transceiver main board 17 and the interface main board 22. This prevents functional failures caused by component displacement during equipment operation. At the same time, the unified "positioning pin + buckle" fixing method ensures that the installation and disassembly process of each component is consistent, making it easier for operators to quickly master maintenance skills and reducing maintenance costs.

[0046] The implementation principle of the one-to-many transmitter in this embodiment is as follows:

[0047] When installing the multi-transmitter transmitter, first install the battery 16 into the battery compartment 24 inside the lower housing 2. Then, install the fixing plate 15, the signal transceiver main board 17, and the interface main board 22 into the inner bottom of the lower housing 2 using the positioning pins 7 and the clips 9, ensuring that the pin holes of each main board are accurately inserted into the positioning pins 7 and that the sides are secured with the clips 9. Next, install the display main board 10 and the control main board 14 onto the lower surface of the upper cover plate 1 using the positioning pins 7 and the clips 9, ensuring that the second contact terminal 11 on the display main board 10 and the second elastic terminal 12 on the control main board 14 are in corresponding contact to achieve electrical connection.

[0048] Next, the pin 6 on the lower surface of the upper cover plate 1 is aligned with the sleeve 19 at the bottom of the lower housing 2 and inserted. During insertion, the end of the pin 6 pushes the locking head 28 to compress the spring 26. When the slot 25 on the pin 6 moves to the position corresponding to the locking head 28, the spring 26 returns to its original position, pushing the slide rod 27 to engage the locking head 28 into the slot 25, thus achieving self-locking fixation between the upper cover plate 1 and the lower housing 2, completing the overall assembly of the transmitter. Simultaneously, the first contact terminal 13 on the control main board 14 contacts the first elastic terminal 18 on the signal transceiver main board 17, and the third elastic terminal 8 on the display main board 10 contacts the third contact terminal 23 on the interface main board 22, achieving electrical connection between the main boards.

[0049] When the transmitter needs repair or the mainboard module needs replacement, the operator uses both thumbs and ring fingers to simultaneously pinch the sliding buttons 5 on both sides of the lower housing 2, pushing the sliding buttons 5 to move the connecting rod 21 and the sliding rod 27, causing the locking head 28 to disengage from the slot 25, thus allowing the upper cover 1 to be removed. Then, as needed, the damaged mainboard module is removed from the clip 9 and the positioning pin 7, and a new mainboard module is replaced. After replacement, the upper cover 1 is reinstalled onto the lower housing 2, so that the pin 6 is inserted into the sleeve 19, and the locking head 28 is engaged in the slot 25, completing the repair.

Claims

1. A transmitter that transmits one signal and receives multiple signals, comprising an upper cover (1) and a lower housing (2), characterized in that: The upper cover plate (1) has pins (6) vertically fixed at the four corners of its lower surface. The pins (6) have slots (25) at their ends. The upper surface of the upper cover plate (1) has a control panel (3). The upper opening of the lower housing (2) corresponds to the shape of the upper cover plate (1). The lower housing (2) has sleeves (19) vertically fixed at the four corners of its inner bottom. The sleeves (19) correspond to the pins (6) and are inserted into them. The lower housing (2) has a support frame (20) vertically fixed at its inner bottom. The upper end of the support frame (20) has a sliding hole. A sliding rod (27) is movably sleeved inside the sliding hole.

2. The transmitter for transmitting multiple receivers as claimed in claim 1, characterized in that, A spring (26) is sleeved on the body of the slide rod (27). A limit block is fixedly connected to one end of the slide rod (27) near the support frame (20). A clamp (28) is fixedly connected to the other end of the slide rod (27). The clamp (28) passes through the side of the sleeve (19) and is movably sleeved with it. The clamp (28) corresponds to the slot (25) and is clamped with it.

3. The transmitter for transmitting multiple receivers as described in claim 2, characterized in that, A connecting rod (21) is fixedly connected to the side of the card head (28). A sliding button (5) is fixedly connected to one end of the outer side of the connecting rod (21). The connecting rod (21) passes through the side plate of the lower housing (2) and is movably sleeved with it. A sliding button frame is fixedly installed on the side of the lower housing (2). The sliding button frame corresponds to the sliding button (5) and is slidably sleeved with it.

4. The transmitter for transmitting multiple receivers as claimed in claim 1, characterized in that, The lower surface of the upper cover plate (1) and the inner bottom of the lower housing (2) are fixedly connected with several buckles (9) and positioning pins (7). The control panel (3) of the upper cover plate (1) is provided with a display main board (10) and a control main board (14). The display main board (10) is equipped with a third elastic terminal (8) and a second contact terminal (11). The control main board (14) is equipped with a second elastic terminal (12) and a first contact terminal (13). The second elastic terminal (12) corresponds to the second contact terminal and is electrically connected to it.

5. The transmitter for transmitting multiple receivers as claimed in claim 4, characterized in that, The display motherboard (10) and the control motherboard (14) are provided with pin holes at their corners. The pin holes correspond to the positioning pins (7) and are inserted into them. The sides of the display motherboard (10) and the control motherboard (14) are corresponding to the buckles (9) and are snapped in the corresponding positions.

6. The transmitter for transmitting multiple receivers as claimed in claim 4, characterized in that, A battery box (24) is fixed to the bottom of the lower housing (2). A battery (16) is installed inside the battery box (24). A fixed horizontal plate (15) is provided above the battery (16). Several interface holes are opened on one side of the lower housing (2). A signal transceiver main board (17) and an interface main board (22) are provided inside the lower housing (2). A first elastic terminal (18) is installed on the panel of the signal transceiver main board (17). The first elastic terminal (18) corresponds to the first contact terminal (13) and is electrically connected to it.

7. The transmitter for transmitting multiple receivers as claimed in claim 6, characterized in that, The interface motherboard (22) has a third contact terminal (23) installed on its board body. The third contact terminal (23) corresponds to the third elastic terminal (8) and is electrically connected to it. Several interfaces on the side of the interface motherboard (22) correspond one-to-one with the interface holes opened on the side of the lower housing (2). An antenna (4) is externally installed on the interface of the interface motherboard (22).

8. The transmitter for transmitting multiple receivers as claimed in claim 6, characterized in that, Pin holes are provided at the corners of the fixed horizontal plate (15), the signal transceiver main board (17) and the interface main board (22). The pin holes correspond one-to-one with the positioning pins (7) fixed inside the lower housing (2) and are inserted into them. The side edges of the fixed horizontal plate (15), the signal transceiver main board (17) and the interface main board (22) correspond one-to-one with the buckles (9) fixed inside the lower housing (2) and are snapped into them.

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