Vehicle-mounted cab mobile phone signal shielding device

Abstract

The invention provides a vehicle-mounted cab mobile phone signal shielding device, and relates to the field of automobile driving safety equipment.The vehicle-mounted cab mobile phone signal shielding device comprises an automobile seat arranged in an automobile main cab, a signal shielding mechanism is arranged above the automobile seat, a separation mechanism used for separating a co-driver from a main driver is arranged on one side of the automobile seat, and the signal shielding mechanism is arranged on the other side of the automobile seat. The separating mechanism comprises a separating plate, an alternating current window, a barrier plate and a first rotating shaft, the alternating current window is formed in the separating plate, and the barrier plate is arranged in the alternating current window. According to the vehicle-mounted cab mobile phone signal shielding device, through the arrangement of the signal shielding mechanism, signal shielding can be conducted on the main driving position, a driver can be effectively prevented from dialing and answering a mobile phone when driving a vehicle, and therefore safe driving of the vehicle is ensured; when the blocking plate is rotated to completely cover the communication window, the function of blocking the sight between the driver and the co-driver can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive driving safety equipment, and particularly to a mobile phone signal shielding device for a vehicle cab. Background Art

[0002] During the driving process of a vehicle, safe driving is always very important. If a driver is found to have behaviors that interfere with safe driving, such as making or answering a handheld phone call while driving a motor vehicle, they will be punished once caught.

[0003] However, even so, people still often make or answer handheld phone calls in places where they cannot be photographed during the driving process, and accidents caused by phone calls occur frequently, greatly affecting social order.

[0004] According to a smart phone signal shielding device for a vehicle cab provided by Chinese Patent No. CN200720188479.1, the device includes a displacement sensor, a switch intelligent control circuit, and a signal shielding device. The displacement sensor is installed at the output end of the vehicle reduction gearbox or other positions that can obtain the vehicle displacement signal to detect the driving state of the vehicle. When the vehicle starts to drive, the sensor detects the displacement signal and sends it to the switch intelligent control circuit; the intelligent control circuit converts the displacement signal and outputs a control signal, which is a voltage value. The control signal controls the activation of the signal shielding device, causing the signal shielding device to start working. When the vehicle stops driving, the displacement signal detected by the sensor is zero, and the control signal controls the automatic shutdown of the mobile phone signal shielding device. Therefore, the intelligent control of the mobile phone signal shielding device is achieved.

[0005] However, now some passengers in the co-driver's seat may make some actions that affect the driver's attention or even lean over to chat with the driver, which is very dangerous, easily distracts the driver, and greatly increases safety hazards, especially when driving on long-distance or high-speed roads. The smart phone signal shielding device for a vehicle cab proposed in this document, although it shields the signal in the main cab through the signal shielding device, it cannot prevent the people in the co-driver's seat from interfering with the driver in the main cab, and is not very convenient to use. Summary of the Invention

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a mobile phone signal shielding device for a vehicle cab that can effectively reduce the interference of co-driver passengers to the driver, and solves the problems raised in the above background art.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the present invention is realized through the following technical solutions: A mobile phone signal shielding device for a vehicle cab, including a vehicle seat disposed in the main driver's cab of the vehicle. A signal shielding mechanism is disposed above the vehicle seat. A partitioning mechanism for separating the co-pilot from the driver is disposed on one side of the vehicle seat. The partitioning mechanism includes a partition board, an exchange window, a blocking board, and a first rotating shaft. An exchange window is opened on the partition board. A blocking board is disposed in the exchange window. One side of the blocking board is fixedly connected to the first rotating shaft. The first rotating shaft is rotatably connected to the partition board. An activity slot for the blocking board to rotate around the first rotating shaft is opened in the partition board. The partition board is movably fitted in the activity slot.

[0010] Preferably, the shapes of both the exchange window and the blocking board are circular, and the diameter of the blocking board is greater than that of the exchange window.

[0011] Preferably, the signal shielding mechanism includes a first outer shell, a second outer shell, a second rotating shaft, and a signal shielding device. The first outer shell is arranged with its opening facing downwards. Both ends of the second outer shell are fixedly connected to the second rotating shaft. The second outer shell is rotatably connected to the inside of the first outer shell through the second rotating shaft. A signal shielding device is fixedly connected to the inside of the second outer shell. When the opening of the second outer shell faces upwards, a signal shielding space is formed between the first outer shell and the second outer shell, such that the signal shielding device cannot shield the vehicle seat from signals.

[0012] Preferably, one side of the first outer shell is fixedly connected to a connecting rod, and the other end of the connecting rod is fixedly connected to the partition board.

[0013] Preferably, a toothed ring is arranged on one side of the exchange window. One end of the first rotating shaft is fixedly connected to a first gear. The first gear meshes with the toothed ring. A plurality of first guide wheels are arranged on the outer side of the toothed ring. A second guide wheel is rotatably connected to the connecting rod. Both the first guide wheel and the second guide wheel are in contact with the toothed ring. One end of the second rotating shaft is coaxially connected to a second gear. A third gear is rotatably connected to the connecting rod. The second gear meshes with the third gear. A straight rod is fixedly connected between the second guide wheel and the third gear, such that the second guide wheel and the third gear rotate synchronously. When the exchange window is in the closed state, the blocking board completely blocks the exchange window, and the second outer shell is in the state with its opening facing downwards. At this time, the signal shielding device shields the vehicle seat from signals. When the exchange window is in the open state, the blocking board flips downwards. The blocking board drives the first rotating shaft to rotate. The first rotating shaft drives the first gear to rotate. The first gear drives the toothed ring to rotate. The toothed ring drives the first guide wheel and the second guide wheel to rotate. The second guide wheel drives the third gear to rotate synchronously through the straight rod. The third gear drives the second gear to rotate. The second gear drives the second outer shell to rotate to the state with its opening facing upwards.

[0014] Preferably, a guiding groove is formed on the outer side of the toothed ring, and the first guiding wheel and the second guiding wheel are fitted in the guiding groove.

[0015] Preferably, it further includes a fixing component for keeping the communication window in a closed state. The fixing component includes an outer cylinder, a spring, a sliding block, a first permanent magnet, a second permanent magnet, and an anti-slip layer. The outer cylinder is arranged at the top of the communication window and fixedly connected to the partition board. The open end of the outer cylinder extends into the movable groove. The first permanent magnet is fixedly connected to the blocking plate. A sliding block is slidably fitted in the outer cylinder. One end of the spring is fixedly connected to the bottom end of the outer cylinder, and the other end of the spring is fixedly connected to the sliding block. A second permanent magnet is fixedly connected to the outer end of the sliding block, and an anti-slip layer is fixedly connected to the outside of the second permanent magnet. The first permanent magnet and the second permanent magnet are mutually attracting magnets. When the blocking plate rotates to completely cover the communication window, the first permanent magnet corresponds to the second permanent magnet. At this time, under the action of like poles attracting each other, the second permanent magnet moves outward until the first permanent magnet and the second permanent magnet adsorb each other. At this time, under the action of the anti-slip layer, the anti-slip layer provides the maximum static friction greater than the gravity of the blocking plate, so that the blocking plate is kept at the highest position.

[0016] Preferably, anti-slip lines are formed on the anti-slip layer.

[0017] (III) Beneficial effects

[0018] The present invention provides a mobile phone signal shielding device for a vehicle cab, which has the following beneficial effects:

[0019] 1. For the mobile phone signal shielding device for the vehicle cab, through the setting of the signal shielding mechanism, the signal shielding of the driver's position can be carried out, which can effectively prevent the driver from making and answering calls when driving the vehicle, thus ensuring the safe driving of the vehicle. Through the setting of the partition board, the communication window and the blocking plate, when driving, the blocking plate is rotated to completely cover the communication window, and at this time, the function of blocking the line of sight between the driver and the co-driver can be achieved, thus effectively preventing the co-driver passengers from affecting the driver and effectively preventing the driver from being distracted.

[0020] 2. For the mobile phone signal shielding device for the vehicle cab, through the setting of the signal shielding mechanism, under normal conditions, the opening of the first housing faces downward, so that the signal shielding device shields the signal of the driver's position. When the opening of the second housing faces upward, a signal shielding space is formed between the first housing and the second housing, so that the signal shielding device cannot shield the signal of the vehicle seat.

[0021] 3. The in-vehicle cab mobile phone signal shielding device, through the settings of the toothed ring, the second guide wheel, the first gear, the second gear, and the third gear, when the AC window is in the closed state, the baffle completely blocks the AC window, and the second housing is in the state with the opening facing downward. At this time, the signal shielding device shields the signal of the car seat. When the AC window is in the open state, the baffle rotates downward, driving the first rotating shaft to rotate. The first rotating shaft drives the first gear to rotate, the first gear drives the toothed ring to rotate, the toothed ring drives the first guide wheel and the second guide wheel to rotate. The second guide wheel drives the third gear to rotate synchronously through a straight rod, the third gear drives the second gear to rotate, and the second gear drives the second housing to rotate to the state with the opening facing upward. When the opening of the second housing faces upward, a signal shielding space is formed between the first housing and the second housing, making it impossible for the signal shielding device to shield the signal of the car seat. At this time, the mobile phone can be used normally. Therefore, when parking by the roadside, only by turning down the baffle can the mobile phone be used normally and communicate with the co-pilot, making it more convenient to use.

[0022] 4. The in-vehicle cab mobile phone signal shielding device, through the setting of the fixing component, when the baffle rotates to completely cover the AC window, the first permanent magnet corresponds to the second permanent magnet. At this time, under the action of like poles attracting each other, the second permanent magnet moves outward until the first permanent magnet and the second permanent magnet adsorb each other. At this time, under the action of the anti-slip layer, the anti-slip layer provides the maximum static friction greater than the gravity of the baffle, making the baffle stay at the highest position. When it is necessary to turn down the baffle, only by turning the baffle downward by hand so that the force for turning the baffle downward is greater than the maximum static friction can the baffle be put down. At the same time, due to the loss of the suction force, the spring contracts, driving the sliding block to move inward, making the second permanent magnet contract into the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Structural schematic of the present invention Figure 1 ;

[0024] Figure 2 Structural schematic of the present invention Figure 2 ;

[0025] Figure 3 Structural schematic of the internal structure of the partition of the present invention Figure 1 ;

[0026] Figure 4 Structural schematic of the internal structure of the partition of the present invention Figure 2 ;

[0027] Figure 5 Structural schematic diagram of the present invention when the AC window is closed;

[0028] Figure 6 Structural schematic diagram of the present invention when the AC window is open;

[0029] Figure 7 For the present invention Figure 5 Enlarged view of the structure at position A in the present invention;

[0030] Figure 8 For the present invention Figure 6 Enlarged view of the structure at position B in the present invention;

[0031] Figure 9 Schematic diagram of the signal shielding mechanism of the present invention;

[0032] Figure 10 Schematic diagram of the fixing component of the present invention.

[0033] In the figure: 1 automobile seat, 2 partition board, 3 blocking board, 4 first outer shell, 5 AC window, 6 first rotating shaft, 7 outer cylinder, 8 first permanent magnet, 9 first gear, 10 toothed ring, 11 first guide wheel, 12 second guide wheel, 13 second rotating shaft, 14 second outer shell, 15 signal shielding device, 16 second gear, 17 connecting rod, 18 straight rod, 19 third gear, 20 spring, 21 sliding block, 22 second permanent magnet, 23 anti-slip layer. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] The embodiments of the present invention provide a mobile phone signal shielding device for a vehicle cab, as Figure 1-10 shown, including an automobile seat 1 arranged in the main driver's cab of the vehicle. A signal shielding mechanism is arranged above the automobile seat 1. A partition mechanism for separating the co-driver from the main driver is arranged on one side of the automobile seat 1. The partition mechanism includes a partition board 2, an AC window 5, a blocking board 3, and a first rotating shaft 6. An AC window 5 is opened on the partition board 2. A blocking board 3 is arranged in the AC window 5. One side of the blocking board 3 is fixedly connected to a first rotating shaft 6. The first rotating shaft 6 is rotatably connected to the partition board 2. An activity groove for the blocking board 3 to rotate around the first rotating shaft 6 is opened in the partition board 2. The partition board 2 is movably matched in the activity groove.

[0036] The shapes of both the AC window 5 and the blocking board 3 are circular, and the diameter of the blocking board 3 is larger than the diameter of the AC window 5.

[0037] The signal shielding mechanism includes a first housing 4, a second housing 14, a second rotating shaft 13, and a signal shield 15. The first housing 4 is arranged with its opening facing downwards. Both ends of the second housing 14 are fixedly connected with the second rotating shafts 13. The second housing 14 is rotatably connected to the inside of the first housing 4 through the second rotating shafts 13. A signal shield 15 is fixedly connected to the inside of the second housing 14. When the opening of the second housing 14 faces upwards, a signal shielding space is formed between the first housing 4 and the second housing 14, such that the signal shield 15 cannot shield the signal of the vehicle seat 1.

[0038] Through the arrangement of the signal shielding mechanism, the signal of the driver's position can be shielded, effectively preventing the driver from making or answering phone calls while driving the vehicle, thereby ensuring the safe driving of the vehicle. Through the arrangements of the partition 2, the communication window 5, and the blocking plate 3, when driving, the blocking plate 3 is rotated to completely cover the communication window 5, and at this time, the function of blocking the line of sight between the driver and the co-driver can be achieved, effectively preventing the co-driver from influencing the driver and effectively preventing the driver from being distracted.

[0039] Through the arrangement of the signal shielding mechanism, under normal conditions, the opening of the first housing 4 faces downwards, such that the signal shield 15 shields the signal of the driver's position. When the opening of the second housing 14 faces upwards, a signal shielding space is formed between the first housing 4 and the second housing 14, such that the signal shield 15 cannot shield the signal of the vehicle seat 1.

[0040] One side of the first housing 4 is fixedly connected with a connecting rod 17, and the other end of the connecting rod 17 is fixedly connected with the partition 2.

[0041] On one side of the communication window 5, a toothed ring 10 is provided. One end of the first rotating shaft 6 is fixedly connected with a first gear 9. The first gear 9 meshes with the toothed ring 10. A plurality of first guide wheels 11 are arranged on the outer side of the toothed ring 10. A second guide wheel 12 is rotatably connected to the connecting rod 17. Both the first guide wheel 11 and the second guide wheel 12 are in contact with the toothed ring 10. One end of the second rotating shaft 13 is coaxially connected with a second gear 16. A third gear 19 is rotatably connected to the connecting rod 17. The second gear 16 meshes with the third gear 19. A straight rod 18 is fixedly connected between the second guide wheel 12 and the third gear 19, so that the second guide wheel 12 and the third gear 19 rotate synchronously. When the communication window 5 is in the closed state, the blocking plate 3 completely blocks the communication window 5, and the second housing 14 is in the state with the opening facing downward. At this time, the signal blocker 15 shields the signal of the vehicle seat 1. When the communication window 5 is in the open state, the blocking plate 3 flips downward. The blocking plate 3 drives the first rotating shaft 6 to rotate. The first rotating shaft 6 drives the first gear 9 to rotate. The first gear 9 drives the toothed ring 10 to rotate. The toothed ring 10 drives the first guide wheel 11 and the second guide wheel 12 to rotate. The second guide wheel 12 drives the third gear 19 to rotate synchronously through the straight rod 18. The third gear 19 drives the second gear 16 to rotate. The second gear 16 drives the second housing 14 to rotate to the state with the opening facing upward.

[0042] Through the settings of the toothed ring 10, the second guide wheel 12, the first gear 9, the second gear 16, and the third gear 19, when the communication window 5 is in the closed state, the blocking plate 3 completely blocks the communication window 5, and the second housing 14 is in the state with the opening facing downward. At this time, the signal blocker 15 shields the signal of the vehicle seat 1. When the communication window 5 is in the open state, the blocking plate 3 flips downward. The blocking plate 3 drives the first rotating shaft 6 to rotate. The first rotating shaft 6 drives the first gear 9 to rotate. The first gear 9 drives the toothed ring 10 to rotate. The toothed ring 10 drives the first guide wheel 11 and the second guide wheel 12 to rotate. The second guide wheel 12 drives the third gear 19 to rotate synchronously through the straight rod 18. The third gear 19 drives the second gear 16 to rotate. The second gear 16 drives the second housing 14 to rotate to the state with the opening facing upward. When the opening of the second housing 14 faces upward, a signal shielding space is formed between the first housing 4 and the second housing 14, so that the signal blocker 15 cannot shield the signal of the vehicle seat 1. At this time, the mobile phone can be used normally. Thus, when parking by the roadside, only by turning down the blocking plate 3, the mobile phone can be used normally and communicate and interact with the co-pilot, which is more convenient to use.

[0043] A guide groove is provided on the outer side of the toothed ring 10. The first guide wheel 11 and the second guide wheel 12 are fitted in the guide groove.

[0044] It also includes a fixing component for keeping the communication window 5 in a closed state. The fixing component includes an outer cylinder 7, a spring 20, a sliding block 21, a first permanent magnet 8, a second permanent magnet 22, and an anti-slip layer 23. The outer cylinder 7 is arranged at the top of the communication window 5 and is fixedly connected to the partition plate 2. The open end of the outer cylinder 7 extends into the movable slot. The first permanent magnet 8 is fixedly connected to the blocking plate 3. A sliding block 21 is slidably fitted in the outer cylinder 7. One end of the spring 20 is fixedly connected to the bottom end of the outer cylinder 7, and the other end of the spring 20 is fixedly connected to the sliding block 21. The outer end of the sliding block 21 is fixedly connected to the second permanent magnet 22, and the outer side of the second permanent magnet 22 is fixedly connected to the anti-slip layer 23. The first permanent magnet 8 and the second permanent magnet 22 are mutually attracting magnets. When the blocking plate 3 rotates to completely cover the communication window 5, the first permanent magnet 8 and the second permanent magnet 22 correspond to each other. At this time, under the action of like-pole attraction, the second permanent magnet 22 moves outward until the first permanent magnet 8 and the second permanent magnet 22 are mutually adsorbed. At this time, under the action of the anti-slip layer 23, the anti-slip layer 23 provides the maximum static friction greater than the gravity of the blocking plate 3, so that the blocking plate 3 is kept at the highest position.

[0045] Through the setting of the fixing component, when the blocking plate 3 rotates to completely cover the communication window 5, the first permanent magnet 8 and the second permanent magnet 22 correspond to each other. At this time, under the action of like-pole attraction, the second permanent magnet 22 moves outward until the first permanent magnet 8 and the second permanent magnet 22 are mutually adsorbed. At this time, under the action of the anti-slip layer 23, the anti-slip layer 23 provides the maximum static friction greater than the gravity of the blocking plate 3, so that the blocking plate 3 is kept at the highest position. When it is necessary to turn down the blocking plate 3, only need to turn down the blocking plate 3 by hand, so that the force for turning down the blocking plate 3 is greater than the maximum static friction, and the blocking plate 3 can be put down. At the same time, due to the loss of the suction force, the spring 20 contracts, driving the sliding block 21 to move inward, so that the second permanent magnet 22 contracts into the outer cylinder 7.

[0046] Anti-slip patterns are provided on the anti-slip layer 23.

[0047] Working principle: Through the setting of the signal shielding mechanism, the signal of the driver's seat can be shielded, which can effectively prevent the driver from making and answering calls while driving, thus ensuring the safe driving of the vehicle. Through the setting of the partition plate 2, the communication window 5 and the blocking plate 3, during driving, the blocking plate 3 is rotated to completely cover the communication window 5, and at this time, the function of blocking the line of sight between the driver and the co-driver can be achieved, thus effectively preventing the co-driver passengers from having an impact on the driver and effectively preventing the driver from being distracted.

[0048] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted cab mobile phone signal shielding device, comprising a vehicle seat (1) arranged in the main cab of a vehicle, characterized in that: A signal shielding mechanism is arranged above the automobile seat (1); a partition mechanism for separating the co-driver from the main driver is arranged on one side of the automobile seat (1); the partition mechanism comprises a partition (2), an AC window (5), a blocking plate (3), and a first rotating shaft (6); an AC window (5) is provided on the partition (2); a blocking plate (3) is arranged inside the AC window (5); a first rotating shaft (6) is fixedly connected to one side of the blocking plate (3); the first rotating shaft (6) is rotatably connected to the partition (2); a movable groove is provided inside the partition (2) for the blocking plate (3) to rotate around the first rotating shaft (6); and the partition (2) is movably fitted in the movable groove.

2. The vehicle-mounted cab mobile phone signal shielding device according to claim 1 is characterized in that: The AC window (5) and the blocking plate (3) are both circular in shape, and the diameter of the blocking plate (3) is greater than the diameter of the AC window (5).

3. The vehicle-mounted cab mobile phone signal shielding device according to claim 2 is characterized in that: The signal shielding mechanism comprises a first shell (4), a second shell (14), a second rotating shaft (13), and a signal shielding device (15); the first shell (4) is opened downward; both ends of the second shell (14) are fixedly connected to the second rotating shaft (13); the second shell (14) is rotatably connected to the inside of the first shell (4) via the second rotating shaft (13); the inside of the second shell (14) is fixedly connected to the signal shielding device (15); when the opening of the second shell (14) is upward, a signal shielding space is formed between the first shell (4) and the second shell (14), so that the signal shielding device (15) cannot shield the signal of the car seat (1).

4. The vehicle-mounted cab mobile phone signal shielding device according to claim 3 is characterized in that: A connecting rod (17) is fixedly connected to one side of the first shell (4), and the other end of the connecting rod (17) is fixedly connected to the partition (2).

5. The vehicle-mounted cab mobile phone signal shielding device according to claim 4 is characterized in that: A gear ring (10) is provided on one side of the AC window (5); a first gear (9) is fixedly connected to one end of the first rotating shaft (6); the first gear (9) meshes with the gear ring (10); a plurality of first guide wheels (11) are provided on the outer side of the gear ring (10); a second guide wheel (12) is rotatably connected to the connecting rod (17); the first guide wheel (11) and the second guide wheel (12) are both in contact with the gear ring (10); a second gear (16) is coaxially connected to one end of the second rotating shaft (13); a third gear (19) is rotatably connected to the connecting rod (17); the second gear (16) and the third gear (19) mesh; a straight rod (18) is fixedly connected between the second guide wheel (12) and the third gear (19) so that the second guide wheel (12) and the third gear (19) are in contact with each other. When the AC window (5) is in a closed state, the blocking plate (3) completely blocks the AC window (5), and the second housing (14) is in an open state facing downward. At this time, the signal shielding device (15) shields the signal of the car seat (1). When the AC window (5) is in an open state, the blocking plate (3) flips downward, the blocking plate (3) drives the first rotating shaft (6) to rotate, the first rotating shaft (6) drives the first gear (9) to rotate, the first gear (9) drives the gear ring (10) to rotate, the gear ring (10) drives the first guide wheel (11) and the second guide wheel (12) to rotate, the second guide wheel (12) drives the third gear (19) to rotate synchronously through the straight rod (18), the third gear (19) drives the second gear (16) to rotate, and the second gear (16) drives the second housing (14) to rotate to an open state facing upward.

6. The vehicle-mounted cab mobile phone signal shielding device according to claim 5 is characterized in that: A guide groove is provided on the outer side of the gear ring (10), and the first guide wheel (11) and the second guide wheel (12) are fitted in the guide groove.

7. The vehicle-mounted cab mobile phone signal shielding device according to claim 6 is characterized by: The invention also comprises a fixing assembly for keeping the AC window (5) in a closed state, the fixing assembly comprising an outer cylinder (7), a spring (20), a sliding block (21), a first permanent magnet (8), a second permanent magnet (22), and an anti-slip layer (23), wherein the outer cylinder (7) is arranged at the top of the AC window (5), the outer cylinder (7) is fixedly connected to the partition (2), and the open end of the outer cylinder (7) extends into the movable groove, the first permanent magnet (8) is fixedly connected to the blocking plate (3), the sliding block (21) is slidably fitted in the outer cylinder (7), one end of the spring (20) is fixedly connected to the bottom end of the outer cylinder (7), and the other end of the spring (20) is fixedly connected to the sliding block (21), and the sliding block The outer end of (21) is fixedly connected to a second permanent magnet (22), and the outer side of the second permanent magnet (22) is fixedly connected to an anti-skid layer (23). The first permanent magnet (8) and the second permanent magnet (22) are mutually attractive magnets. When the blocking plate (3) rotates to completely cover the AC window (5), the first permanent magnet (8) and the second permanent magnet (22) correspond to each other. At this time, under the effect of the attraction between the same poles, the second permanent magnet (22) moves toward the outside until the first permanent magnet (8) and the second permanent magnet (22) are mutually attracted. At this time, under the effect of the anti-skid layer (23), the anti-skid layer (23) provides a maximum static friction greater than the gravity exerted on the blocking plate (3), so that the blocking plate (3) is kept at the highest point.

8. The vehicle-mounted cab mobile phone signal shielding device according to claim 7 is characterized in that: The anti-slip layer (23) is provided with anti-slip grooves.

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