Retractable vehicle-mounted antenna reflector

Abstract

The present invention discloses a retractable vehicle-mounted antenna reflector, comprising a fixed panel and one or more retractable panels. The retractable panels are mounted on the fixed panel via a retractable drive assembly and can be driven to retract and unfold by the retractable drive assembly. A locking assembly is also mounted between each retractable panel and the fixed panel for locking the retractable panel after it is unfolded or folded into place. The locking assembly includes a first positioning member having a positioning hole, a second positioning member inserted into the positioning hole to form a positioning when the retractable panel is unfolded or folded into place, and a locking mechanism for locking the retractable panel in the unfolded or folded state. The first positioning member is mounted on the fixed panel, and the second positioning member is mounted on the retractable panel. The retractable vehicle-mounted antenna reflector has the advantages of secure locking, high positioning accuracy, guaranteed surface accuracy of the reflector, simple and compact structure, reliable operation, and convenient operation.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular to a retractable vehicle-mounted antenna reflector. Background Art

[0002] To meet the requirements of road and rail transportation, large-aperture parabolic antennas for vehicles are generally designed to be retractable. Current applications for large-aperture parabolic antennas for vehicles require increasingly high mobility, thus requiring the antenna to have automatic retraction and extension capabilities.

[0003] There are generally several ways to deploy and retract a retractable antenna:

[0004] Method 1: Using detachable fixed components. In actual use, this type of antenna requires a lot of manpower and a long time to deploy, and has poor mobility when moving to another location. It is generally not suitable for missions requiring high mobility.

[0005] Method 2: Multiple retractable surfaces can be manually deployed. Compared with method 1, this type of antenna requires less manpower and time to deploy in actual use, but its mobility is still poor.

[0006] Method three uses a method of deploying and retracting multiple retractable surfaces that can be electrically operated. Compared with the above two deployment methods, one person can complete the deployment and retraction of the antenna within a few minutes, greatly saving manpower and time for antenna deployment.

[0007] However, the locking of the retractable antenna surface currently operated electrically is generally achieved by electromagnetic attraction or electromagnetic latch locking, resulting in the retractable antenna surface being not locked firmly enough and the positioning accuracy being not precise enough, thus affecting the surface accuracy of the reflecting surface and thus affecting the technical indicators of the high-frequency band antenna. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a retractable vehicle-mounted antenna reflector with firm locking, high positioning accuracy, conducive to ensuring the surface accuracy of the reflector, simple and compact structure, reliable operation and convenient operation.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A retractable vehicle-mounted antenna reflecting surface comprises a fixed panel and one or more flip and folding panels, wherein the flip and folding panels are mounted on the fixed panel via a retractable and retractable drive assembly and can be driven to fold and unfold by the retractable and retractable drive assembly; a locking assembly is also installed between each flip and folding panel and the fixed panel for locking the flip and folding panel after it is unfolded or folded into place; the locking assembly comprises a first positioning member having a positioning hole, a second positioning member inserted into the positioning hole to form a positioning when the flip and folding panel is unfolded or folded into place, and a locking mechanism for locking the flip and folding panel in an unfolded or folded state; the first positioning member is mounted on one of the fixed panel and the flip and folding panel, and the second positioning member is mounted on the other of the fixed panel and the flip and folding panel.

[0011] For the above-mentioned retractable vehicle-mounted antenna reflective surface, preferably, when the second positioning member is inserted into the positioning hole, the contact surface with the first positioning member is a conical surface.

[0012] The above-mentioned retractable vehicle-mounted antenna reflecting surface, preferably, the locking mechanism includes a locking rod and a locking hook, the locking rod is installed on the flip and folding panel, the locking rod is provided with a protrusion, and the locking hook is installed on the fixed panel in a manner that can move between a locked state and an unlocked state, and the locking hook cooperates with the protrusion of the locking rod in the locked state to force the second positioning member and the first positioning member to be close to each other, and the locking hook allows the flip and folding panel to carry the second positioning member out of the positioning hole of the first positioning member in the unlocked state, and the locking mechanism also includes a driving unit for driving the locking hook to move between the locked state and the unlocked state.

[0013] The above-mentioned retractable vehicle-mounted antenna reflecting surface, preferably, the driving unit includes a slider, the slider is mounted on the first positioning member in a manner of linear reciprocating sliding in the direction of approaching and moving away from the locking rod, the lock hook is hingedly mounted on the slider and moves between the locked state and the unlocked state around the hinge axis in a swinging motion, the first positioning member is equipped with an annular lock core that forces the lock hook to swing toward the locked state when the slider slides away from the locking rod, and a pusher that forces the lock hook to move toward the unlocked state when the slider slides close to the locking rod, and the first positioning member is also equipped with a driving component for driving the slider to slide back and forth.

[0014] The above-mentioned retractable vehicle-mounted antenna reflecting surface preferably comprises a driving component including a nut, a screw and a first rotating driving component, the nut is fixedly mounted on the first positioning component, the screw is cooperatively connected to the nut, the slider is rotationally connected to the screw, and the driving end of the first rotating driving component is connected to the screw.

[0015] In the above-mentioned retractable vehicle-mounted antenna reflector, preferably, the locking hook, the slider, the push-opening member and the nut are all installed in a sleeve, and the sleeve is fixedly connected to the first positioning member.

[0016] The above-mentioned retractable vehicle-mounted antenna reflecting surface, preferably, the retractable drive assembly includes a second rotating drive member and a hand-cranked planetary reducer, the flip folding panel is connected to the fixed panel through a hinge shaft, and the driving end of the second rotating drive member is connected to the hinge shaft through a hand-cranked planetary reducer.

[0017] The above-mentioned retractable vehicle-mounted antenna reflecting surface, preferably, also includes a retractable and retractable control box and a sensor group that can at least detect whether each flip and folding panel is unfolded into place, whether each flip and folding panel is folded into place, whether each locking mechanism is in a locked state, and whether each locking mechanism is in an unlocked state, and the sensor group is connected to the retractable and retractable control box.

[0018] For the above-mentioned retractable vehicle-mounted antenna reflector, preferably, the retractable control box is installed on the back side of the fixed panel.

[0019] The above-mentioned retractable vehicle-mounted antenna reflecting surface preferably further includes a retractable monitoring box, the retractable control box is connected to the retractable monitoring box, and the retractable monitoring box includes a human-computer interaction module and an interface for communicating with a host computer.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] The retractable vehicle-mounted antenna reflector of the present invention has a locking assembly that locks the retractable panel after it is unfolded or folded into place, preventing rotation relative to the fixed panel. This securely locks the panel and provides excellent reliability. The locking assembly utilizes a first and second positioning member for plug-in positioning, resulting in high positioning accuracy. The locked reflector, after unfolding or folding, maintains high rigidity and stability, meeting high-precision requirements for the reflector's profile. After repeated unfolding and retraction, the profile achieves an RMS ≤ 0.3mm, ensuring the reflector's profile accuracy during maneuvers and thus guaranteeing antenna performance. The locking assembly is simple and compact, reliable, and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front structure of the retractable vehicle-mounted antenna reflector.

[0023] Figure 2 This is a schematic diagram of the back structure of the retractable vehicle-mounted antenna reflector.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the locking component.

[0025] Figure 4 This is the circuit diagram of the retractable vehicle-mounted antenna reflector.

[0026] Figure 5 It is a structural diagram of the expansion control box.

[0027] Figure 6 It is a structural diagram of the expansion monitoring box.

[0028] Figure 7 Schematic diagram of the structure of the power system of the expansion monitoring box.

[0029] Figure 8 This is a flow chart for the development of a retractable vehicle-mounted antenna reflector.

[0030] Legend:

[0031] 1. Fixed panel; 2. Folding panel; 3. Folding drive assembly; 31. Second rotary drive member; 32. Hand-cranked planetary reducer; 4. Locking assembly; 41. Lock rod; 42. Lock hook; 43. Slider; 44. Annular lock core; 45. Push-open member; 46. Nut; 47. Screw; 48. First rotary drive member; 5. Folding control box; 6. Sensor group; 7. Folding monitoring box. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 3As shown, the retractable vehicle-mounted antenna reflector of this embodiment includes a fixed panel 1 and two flip-and-fold panels 2. The flip-and-fold panels 2 are mounted on the fixed panel 1 via a retractable drive assembly 3 and can be driven to retract and deploy. A locking assembly 4 is also mounted between each flip-and-fold panel 2 and the fixed panel 1 for locking the flip-and-fold panels 2 when deployed or retracted. The locking assembly 4 includes a first locating member having a positioning hole, a second locating member inserted into the positioning hole to position the flip-and-fold panels 2 when deployed or retracted, and a locking mechanism for locking the flip-and-fold panels 2 in the deployed or retracted state. The first locating member is mounted on the fixed panel 1, and the second locating member is mounted on the flip-and-fold panels 2. The two flip-and-fold panels 2 are positioned on either side of the fixed panel 1. When deployed, they form a complete reflector surface with the fixed panel 1. When deployed or retracted, the flip-and-fold panels 2 are locked by the locking assembly 4, preventing rotation relative to the fixed panel 1. This securely locks the flip-and-fold panels 2 and provides excellent reliability. Because the locking assembly 4 is pluggably positioned using the first and second positioning members, it offers high positioning accuracy. The reflective surface, when deployed or retracted, is locked with excellent rigidity and stability, meeting the high-precision requirements for the reflective surface profile. After repeated deployment and retraction, the profile accuracy reaches RMS ≤ 0.3mm, ensuring the reflective surface's profile accuracy during maneuvers and, consequently, the antenna's performance. This locking assembly is simple, compact, reliable, and easy to operate.

[0034] In this embodiment, there are two sets of locking components 4, one set of locking components 4 is used to lock the flip folding panel 2 after the flip folding panel 2 is unfolded into place, and the other set of locking components 4 is used to lock the flip folding panel 2 after the flip folding panel 2 is folded into place.

[0035] like Figure 3 As shown, in this embodiment, the contact surface between the second positioning member and the first positioning member when the second positioning member is inserted into the positioning hole is a conical surface, which facilitates the first positioning member to be inserted into and removed from the second positioning member, and the positioning is accurate, reliable and high-precision.

[0036] like Figure 3As shown, in this embodiment, the locking mechanism includes a locking rod 41 and two locking hooks 42. The two locking hooks 42 are arranged relative to each other. The locking rod 41 is mounted on the flip and folding panel 2. The locking rod 41 has a protrusion. The locking hooks 42 are mounted on the fixed panel 1 in a manner that can move between a locked state and an unlocked state. In the locked state, the locking hooks 42 cooperate with the protrusion of the locking rod 41 to force the second positioning member and the first positioning member to be in close contact with each other. In the unlocked state, the locking hooks 42 allow the flip and folding panel 2 to move out of the positioning hole of the first positioning member with the second positioning member. The locking mechanism also includes a driving unit for driving the locking hooks 42 to move between the locked state and the unlocked state. The locking hooks 42 lock and fix the locking rod 41, preventing the flip and folding panel 2 from rotating relative to the fixed panel 1, and firmly locking the flip and folding panel 2 with good reliability. Moreover, the locking assembly 4 has a simple and compact structure, reliable operation, and convenient operation. When locked, the lock hook 42 engages the projection of the lock rod 41, locking the rod 41 and forcing the second positioning member into close contact with the first positioning member. When unlocked, the lock hook 42 releases the projection of the lock rod 41, allowing the lock rod 41 to move away from the lock hook 42. The locking mechanism, through the cooperation of the lock rod 41 and the lock hook 42, securely locks the flip-folding panel 2, ensuring that the first positioning member and the second positioning member remain in close contact. This locking mechanism has a simple and compact structure, is low-cost, and provides excellent locking effectiveness.

[0037] like Figure 3 As shown, in this embodiment, the drive unit includes a slider 43, which is mounted on a first positioning member in a manner that allows linear reciprocating sliding in a direction toward and away from the locking rod 41. The lock hook 42 is hingedly mounted on the slider 43 and moves between a locked state and an unlocked state in a swinging motion about a hinge axis. The first positioning member is mounted with an annular lock core 44 that forces the lock hook 42 to swing toward the locked state when the slider 43 slides away from the locking rod 41, and a pusher 45 that forces the lock hook 42 to move toward the unlocked state when the slider 43 slides toward the locking rod 41. The first positioning member is also mounted with a drive component for driving the slider 43 to slide back and forth. One end of the lock hook 42 hinged to the slider 43 is a first end, and the other end of the lock hook 42 is a second end. When the slider 43 drives the two lock hooks 42 to slide away from the lock rod 41, the two lock hooks 42 swing, and the second ends of the two lock hooks 42 approach each other until they hook the protrusion of the lock rod 41, locking the lock rod 41 and pulling the lock rod 41 away from the flip and folding panel 2, thereby forcing the second positioning member to be in close contact with the first positioning member; when the slider 43 drives the two lock hooks 42 to slide toward the lock rod 41, the push member 45 pushes the two lock hooks 42 to swing, and the second ends of the two lock hooks 42 move away from each other, releasing the lock rod 41. In this structure, the slider 43 drives the lock hooks 42 to slide, realizing the movement of the lock hooks 42 between the locked state and the unlocked state, and the locking mechanism operates smoothly and reliably.

[0038] like Figure 3 As shown, in this embodiment, the drive component includes a nut 46, a screw 47, and a first rotary drive member 48. The nut 46 is fixedly mounted on the first positioning member, the screw 47 is cooperatively connected to the nut 46, the slider 43 is rotatably connected to the screw 47, and the driving end of the first rotary drive member 48 is connected to the screw 47. The first rotary drive member 48 is a DC motor. The DC motor drives the screw 47 to rotate, and the screw 47 drives the slider 43 to slide back and forth. This drive component has a compact structure and reliable operation. The DC motor uses back electromotive force for speed feedback. During the locking operation, the DC motor is controlled by the current loop to complete the locking action with a certain torque. During the locking process, speed control can ensure that the locking time is appropriate and the overshoot is small. At the same time, torque control ensures that the screw 47 and nut 46 can engage the threads with the appropriate torque, and the locking is reliable and does not loosen, which can meet the high precision requirements of the reflective surface profile. Preferably, the first rotary drive member 48 is connected to the screw rod 47 via a manually crankable reducer, so that the retraction and extension operation can be performed manually under completely power-off conditions, which provides good security and high flexibility.

[0039] like Figure 3 As shown, in this embodiment, the lock hook 42, the slider 43, the push member 45 and the nut 46 are all installed in a sleeve, and the sleeve is fixedly connected to the first positioning member. In this way, the locking assembly 4 has a compact structure, reliable operation and high safety.

[0040] like Figure 2 As shown, in this embodiment, the retraction and extension drive assembly 3 includes a second rotary drive member 31 and a manually-cranked planetary reducer 32. The flip and folding panel 2 is connected to the fixed panel 1 via a hinge shaft, and the drive end of the second rotary drive member 31 is connected to the hinge shaft via the manually-cranked planetary reducer 32. This allows manual retraction and extension operations in a complete power-off state, providing enhanced reliability. The second rotary drive member 31 is a servo motor.

[0041] like Figure 2As shown, in this embodiment, the retractable vehicle-mounted antenna reflector further includes a retractable control box 5 and a sensor group 6 capable of at least detecting whether each flip and foldable panel 2 is fully deployed, whether each flip and foldable panel 2 is fully folded, whether each locking mechanism is in a locked state, and whether each locking mechanism is in an unlocked state. The sensor group 6 is connected to the retractable control box 5. The sensor group 6 includes an deployment sensor, a folding sensor, a locking sensor, and a release sensor. The deployment sensor is used to detect whether each flip and foldable panel 2 is fully deployed, the folding sensor is used to detect whether each flip and foldable panel 2 is fully folded, the locking sensor is used to detect whether each locking mechanism is in a locked state, and the release sensor is used to detect whether each locking mechanism is in an unlocked state. The sensor group 6 can detect whether the flip and foldable panel 2 is fully deployed, thereby ensuring the surface accuracy of the reflector. Preferably, the deployment sensor, folding sensor, locking sensor, and release sensor are proximity sensors.

[0042] like Figure 2 and Figure 4 As shown, in this embodiment, the retraction and extension control box 5 is installed on the back of the fixed panel 1. This facilitates the installation and connection of the retraction and extension control box 5 and all electrical components of the flip and folding panel 2 nearby, avoiding signal attenuation and electromagnetic interference caused by long-distance transmission of drive and control signals.

[0043] In this embodiment, Figure 5 As shown, the main control circuit of the antenna retraction and deployment control box 5 consists of an onboard power distribution circuit, a CORTEX-M4 ARM core processor control circuit, a CPLD digital logic circuit, a signal isolation circuit for I / O and high-speed communication signals, a DC motor servo drive module, a sensor signal receiving circuit, a CAN communication interface circuit, and a relay switching circuit. The CORTEX-M4 ARM core processor control circuit is the core of the antenna retraction and deployment control, responsible for workflow processing, CAN communication, PWM signal generation, and I / O signal processing. The CPLD digital logic circuit is responsible for input and output signal processing and signal level conversion. The signal isolation circuit for I / O and high-speed communication signals isolates internal digital signals from peripheral interface digital signals, improving system reliability. The DC motor servo drive module is responsible for servo driving the DC motor; the sensor signal receiving circuit is responsible for detecting the deployed / folded position and the locked / released position. The relay switching circuit is responsible for time-sharing the DC motor driver. Switching is performed by the CPU according to the workflow, enabling time-sharing servo control of the first rotating drive element 48.

[0044] like Figure 4As shown, in this embodiment, the retractable vehicle-mounted antenna reflector also includes a retractable monitoring box 7, and the retractable control box 5 is connected to the retractable monitoring box 7. The retractable monitoring box 7 includes a human-computer interaction module and an interface for communicating with a host computer. In this way, local operation can be performed through the human-computer interaction module, and it can also be connected to the host computer through the communication interface, and then remote communication control is performed by the host computer. Decoupling the retractable monitoring box 7 from other subsystems of the antenna facilitates the design and development of the system, as well as later maintenance. Preferably, the communication interface between the retractable monitoring box 7 and the host computer is an Ethernet interface, a CAN interface or an RS485 interface. In this embodiment, there is only one DC power supply and one CAN communication connection between the retractable monitoring box 7 and the retractable control box 5, which facilitates the electrical integration design of the system, and the electrical connection is simple and reliable.

[0045] like Figure 4 As shown, in this embodiment, the folding and stowing control box 5 has two CAN communication interface circuits: CAN1 and CAN2. CAN1 is used for servo control of the first rotating drive element 48 and the second rotating drive element 31, while CAN2 is used for communication with the folding and stowing monitoring box 7. The folding and stowing control box 5 receives commands from the folding and stowing monitoring box 7 and reports the operating status of each flip and folding panel 2. Heartbeat packets are used between the folding and stowing control box 5 and the folding and stowing monitoring box 7 to continuously monitor whether communication is normal.

[0046] like Figure 6 As shown, in this embodiment, the retraction and deployment monitoring box 7 further includes a device status mutual inspection module. The device status mutual inspection module performs status mutual inspection with other systems of the antenna to avoid safety hazards caused by human error and ensure the safe operation of the control system.

[0047] In this embodiment, the retractable monitoring box 7 is a standard 19-inch rack-mounted box, which is installed on the equipment compartment cabinet frame to facilitate the operator's control of the antenna.

[0048] like Figure 7 As shown, in this embodiment, the retractable monitoring box 7 includes a power module and a battery system. The power module is powered by 220VAC and is used for normal AC power supply conditions. The battery system is an emergency backup power supply for the monitoring chassis, which can ensure that the retractable vehicle-mounted antenna reflector can complete several retractable and retractable operations when there is no external AC power supply. The battery system includes an AC / DC power adapter, a lithium battery module, and a voltage regulator module. The power supply of the AC / DC power module and the battery system are respectively controlled by the chassis panel switch. When the battery system power switch is disconnected, the AC / DC power module supplies power to the system; when the battery system power switch is closed, the system power supply is switched to battery power and the AC / DC power module is cut off through the relay.

[0049] like Figure 8 As shown, the method for deploying the retractable vehicle-mounted antenna reflector of this embodiment includes the following steps:

[0050] S1: Check whether the antenna car has risen to the right position. If it has not risen to the right position, it will report that the antenna car lifting platform has not risen. Otherwise, it will execute the next step.

[0051] S2: Detecting whether the flip and folding panel 2 is in the unfolded state through the sensor group 6. If it is in the unfolded state, the program ends; otherwise, the next step is executed;

[0052] S3: operating the second rotary driving member 31 to unfold the flip-folding panel 2;

[0053] S4: The sensor group 6 detects whether the flip and folding panel 2 is fully unfolded. If it is fully unfolded, the second rotating driving member 31 stops running; otherwise, the second rotating driving member 31 continues running;

[0054] S5: Lock the flip-folding panel 2 through the locking component 4.

[0055] Among them, the two flip folding panels 2 correspond to Figure 8 Folding surface 1 to 2.

[0056] The deployment method of this embodiment detects whether the flip-folding panel 2 is fully deployed by the sensor group 6, thereby ensuring the surface accuracy of the reflecting surface during the maneuver and improving the performance of the antenna.

[0057] The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiment. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of the present invention should also be considered as the scope of protection of the present invention.

Claims

1. A retractable vehicle-mounted antenna reflector, comprising a fixed panel (1) and one or more flip-folding panels (2), wherein the flip-folding panels (2) are mounted on the fixed panel (1) via a retractable drive assembly (3) and can be driven to be retracted and unfolded by the retractable drive assembly (3), characterized in that: A locking assembly (4) is further installed between each flip-folding panel (2) and the fixed panel (1) for locking the flip-folding panel (2) after the flip-folding panel (2) is unfolded or folded into place, the locking assembly (4) comprising a first positioning member having a positioning hole, a second positioning member inserted into the positioning hole to form a positioning when the flip-folding panel (2) is unfolded or folded into place, and a locking mechanism for locking the flip-folding panel (2) in the unfolded or folded state, the first positioning member being installed on one of the fixed panel (1) and the flip-folding panel (2), and the second positioning member being installed on the other of the fixed panel (1) and the flip-folding panel (2); The locking mechanism comprises a locking rod (41) and a locking hook (42), wherein the locking rod (41) is mounted on the flip-folding panel (2), the locking rod (41) is provided with a protrusion, and the locking hook (42) is mounted on the fixed panel (1) in a manner capable of moving between a locked state and an unlocked state, wherein the locking hook (42) cooperates with the protrusion of the locking rod (41) in the locked state to force the second positioning member and the first positioning member to be in close contact with each other, and wherein the locking hook (42) allows the flip-folding panel (2) to carry the second positioning member out of the positioning hole of the first positioning member in the unlocked state, and the locking mechanism further comprises a driving unit for driving the locking hook (42) to move between the locked state and the unlocked state; The driving unit comprises a slider (43), the slider (43) being mounted on the first positioning member in a manner of linear reciprocating sliding in a direction approaching and away from the locking rod (41), the locking hook (42) being hingedly mounted on the slider (43) and moving between the locked state and the unlocked state in a swinging motion around a hinge axis, the first positioning member being mounted with an annular lock core (44) for forcing the locking hook (42) to swing toward the locked state when the slider (43) slides away from the locking rod (41), and a pushing member (45) for forcing the locking hook (42) to move toward the unlocked state when the slider (43) slides toward the locking rod (41), and the first positioning member being further mounted with a driving component for driving the slider (43) to slide back and forth; The driving component includes a nut (46), a screw rod (47) and a first rotating driving member (48), wherein the nut (46) is fixedly mounted on the first positioning member, the screw rod (47) is cooperatively connected to the nut (46), the slider (43) is rotationally connected to the screw rod (47), and the driving end of the first rotating driving member (48) is connected to the screw rod (47); The first rotating drive member (48) is a DC motor that uses back electromotive force for speed feedback and current loop control. The DC motor completes the locking action in a certain time through speed control, and controls the torque through the current loop to ensure the threaded engagement of the screw rod (47) and the nut (46).

2. The retractable vehicle-mounted antenna reflector according to claim 1, characterized in that: When the second positioning member is inserted into the positioning hole, the contact surface between the second positioning member and the first positioning member is a conical surface.

3. The retractable vehicle-mounted antenna reflector according to claim 1, characterized in that: The locking hook (42), the slider (43), the push-opening member (45) and the nut (46) are all installed in a sleeve, and the sleeve is fixedly connected to the first positioning member.

4. The retractable vehicle-mounted antenna reflector according to claim 1, characterized in that: The retractable and unfoldable drive assembly (3) comprises a second rotary drive member (31) and a hand-cranked planetary reducer (32); the flip and foldable panel (2) is connected to the fixed panel (1) via a hinge shaft; and the driving end of the second rotary drive member (31) is connected to the hinge shaft via the hand-cranked planetary reducer (32).

5. The retractable vehicle-mounted antenna reflector according to any one of claims 1 to 4, characterized in that: The retractable vehicle-mounted antenna reflector further comprises a retractable control box (5) and a sensor group (6) capable of at least detecting whether each flip and folding panel (2) is fully unfolded, whether each flip and folding panel (2) is fully folded, whether each locking mechanism is in a locked state, and whether each locking mechanism is in an unlocked state. The sensor group (6) is connected to the retractable control box (5).

6. The retractable vehicle-mounted antenna reflector according to claim 5, characterized in that: The retraction and extension control box (5) is installed on the back side of the fixed panel (1).

7. The retractable vehicle-mounted antenna reflector according to claim 5, characterized in that: The retractable vehicle-mounted antenna reflector further comprises a retractable monitoring box (7), the retractable control box (5) is connected to the retractable monitoring box (7), and the retractable monitoring box (7) comprises a human-computer interaction module and an interface for communicating with a host computer.

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