A sonic warning device for autonomous driving

Abstract

The invention discloses a sonic wave warning device for automatic driving, which belongs to the technical field of automatic driving, and comprises an installation inner plate installed in the front end or rear end of a vehicle, elastic telescopic parts are vertically arranged on both sides of the installation inner plate, an installation outer plate is connected between the top ends of the two elastic telescopic parts, a rangefinder body is arranged below the installation outer plate, a signal transmitting port is fixed at the middle part of the top end of the rangefinder body, and a window for placing the signal transmitting port is opened in the middle part of the installation outer plate; the invention adjusts the signal transmitting port away from the window through the extension and retraction of an electric push rod, can be used for rain shelter and sun shading, so as to protect the signal transmitting port and ensure the accuracy of sound wave detection; when the vehicle is hit, the electric push rod is firstly extended and adjusted for the first step of protection, and then the elastic telescopic parts and the installation outer plate are cooperated for the second step of protection, and finally the protective component is further protected to make the protection better.

Description

Technical Field

[0001] The present invention relates to the field of autonomous driving technology, and more specifically, to a sonic wave warning device for autonomous driving. Background Art

[0002] Autonomous driving is the process of enabling cars to automatically perceive the environment and make decisions without the need for human drivers, so as to drive safely and efficiently. Autonomous driving technology integrates automatic control, artificial intelligence, visual computing and other technologies, and is a major achievement in computer science and intelligent control technology.

[0003] The existing authorization publication number is: CN 213457367 U. A sonic warning device for automatic driving includes an outer protective cover, the left end of the outer protective cover is fixedly installed with side edge 1, the right end of the outer protective cover is fixedly installed with side edge 2, the side edge 2 is located on the right side of side edge 1, the front of the upper end of the outer protective cover is fixedly provided with heat dissipation vent 1, the rear end of the upper end of the outer protective cover is fixedly provided with heat dissipation vent 2, the heat dissipation vent 2 is located behind the heat dissipation vent 1. The principle of the sonic warning device for automatic driving is that an ultrasonic wave transmitting device emits an ultrasonic wave, and its basis is the time difference when the receiver receives the ultrasonic wave. The ultrasonic wave transmitter transmits the ultrasonic wave in a certain direction, and starts timing at the same time as the emission moment. The ultrasonic wave propagates in the air, and returns immediately when it encounters an obstacle on the way. The ultrasonic wave receiver stops timing immediately when it receives the reflected wave, so that the distance can be calculated.

[0004] When the above technical solution is actually used, the following technical problems still exist:

[0005] Since the signal transmitting port is installed outside, it may be damaged when the car is hit, or the accuracy of the acoustic wave detection may be reduced when it is exposed to rain or sunlight, which will affect subsequent acoustic wave detection. Summary of the invention

[0006] In view of the problems mentioned in the background art in the prior art, the purpose of the present invention is to provide a sound wave warning device for autonomous driving.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A sonic warning device for automatic driving, comprising an inner mounting plate mounted in the front end or rear end of a vehicle, elastic telescopic parts being vertically arranged on both sides of the inner mounting plate, an outer mounting plate being connected between the top ends of the two elastic telescopic parts, a rangefinder body being arranged below the outer mounting plate, a signal transmitting port being fixed at the middle of the top end of the rangefinder body, a window for placing the signal transmitting port being opened at the middle of the outer mounting plate, electric push rods for pushing the rangefinder body to move being vertically fixed on both sides of the bottom end of the outer mounting plate, and a protective component being arranged on the inner mounting plate;

[0009] The protection component drives the rangefinder body to move downward and rotate, so that the signal transmitting port on the rangefinder body is reversed.

[0010] Furthermore, the protective component includes a fixed plate fixed on both sides of the top of the mounting inner plate at positions between the elastic telescopic parts, a movable groove is opened in the middle of the fixed plate, sliding columns are connected between the movable groove and the positions at both ends of the middle of the rangefinder body, the sliding column is located below the electric push rod, a gear is fixed to the outer side of one end of the sliding column away from the rangefinder body, a sliding sleeve is rotatably connected between one end of the sliding column and the outer side of the upper part of the elastic telescopic part, a limiting slide rod is fixed on the outer side of the fixed plate along the edge direction of the movable groove, and the limiting slide rod extends from the middle to the bottom and is distributed with a rack meshing with the gear.

[0011] Furthermore, a rotation hole is formed at one end of the sliding column, and a rotation rod fixed to the sliding sleeve is formed inside the rotation hole.

[0012] Furthermore, a fixing ring is fixed to the bottom end of the electric push rod, the fixing ring is sleeved on the outside of the sliding column, and a bearing is provided between the inner side of the fixing ring and the outer side of the sliding column.

[0013] Furthermore, a limiting plate for limiting the position of the sliding sleeve is fixed to the outer side of the top of the elastic telescopic member.

[0014] Furthermore, an alarm is fixed to one side of the bottom of the rangefinder body, and the alarm is connected to the rangefinder body.

[0015] Furthermore, a cleaning component is vertically fixed in the middle of the top end of the mounting inner plate, and the cleaning component is used for cleaning when the signal transmitting port is reversed.

[0016] Furthermore, the cleaning assembly includes an outer shell fixed to the middle part of the top end of the mounting inner plate, a cleaning groove is opened in the middle part of the top end of the outer shell, a cleaning plate is provided at the bottom of the cleaning groove, a moving rod is vertically fixed to the middle part of the bottom end of the cleaning plate, a reset spring is connected between the outer side of the moving rod and the outer shell, retraction sleeves are fixed at both sides of the top of the cleaning groove in the outer shell, a card block for limiting a signal transmitting port is slidably connected in the retraction sleeve, and an elastic reset rod is connected between the end of the card block away from the cleaning groove and the inside of the retraction sleeve.

[0017] Furthermore, a connecting line is connected between the middle of the other end of the block and one side of the bottom end of the moving rod.

[0018] Furthermore, the cleaning plate includes a bottom plate arranged at the top end of the moving rod, absorbent cotton is arranged at the top end of the bottom plate, and a dust removal cloth is arranged at the top end of the absorbent cotton.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By extending and retracting the electric push rod, the signal transmitting port can be adjusted away from the window to avoid rain and sun, so as to protect the signal transmitting port and ensure the accuracy of sound wave detection;

[0021] 2. When the car is hit, the electric push rod is adjusted to provide protection in the first step, and then the elastic telescopic parts and the outer panels are used to provide protection in the second step. Finally, the protective components are used to provide further protection, so that the protection is better.

[0022] 3. By using the cleaning component, not only can the signal transmitting port be cleaned, but the signal transmitting port can also be reversed and stuck in the cleaning slot to further protect the signal transmitting port. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a sonic warning device for autonomous driving according to the present invention.

[0024] Figure 2 This is a front view of a sonic warning device for autonomous driving according to the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of a sonic warning device for autonomous driving according to the present invention, with the outer mounting plate removed.

[0026] Figure 4 This is a schematic structural diagram of a protective component of a sonic warning device for autonomous driving according to the present invention.

[0027] Figure 5 This is a schematic diagram of the partially decomposed structure of a sonic warning device for autonomous driving according to the present invention.

[0028] Figure 6This is another structural schematic diagram of a partial decomposition of a sonic warning device for autonomous driving according to the present invention.

[0029] Figure 7 This is a schematic structural diagram of a sonic warning device for autonomous driving with a cleaning component according to the present invention.

[0030] Figure 8 This is a schematic structural diagram of a cleaning component of a sonic warning device for autonomous driving according to the present invention.

[0031] Markings in the accompanying drawings:

[0032] 100. Install the inner panel;

[0033] 200, elastic expansion member; 201, limiting plate;

[0034] 300, install outer panels; 301, windows;

[0035] 400, rangefinder body; 401, signal transmitting port;

[0036] 500, electric push rod;

[0037] 600, protection assembly; 601, fixed plate; 602, moving groove; 603, sliding column; 604, gear; 605, rotating hole; 606, rotating rod; 607, sliding sleeve; 608, limiting sliding rod; 609, rack;

[0038] 700, siren;

[0039] 800, cleaning assembly; 801, housing; 802, cleaning tank; 803, cleaning plate; 804, moving rod; 805, reset spring; 806, retraction sleeve; 807, block; 808, elastic reset rod; 809, connecting line. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 and Figure 2A sonic wave warning device for automatic driving includes an inner mounting plate 100 installed in the front end or rear end of a vehicle, elastic telescopic members 200 are vertically arranged on both sides of the inner mounting plate 100, and the elastic telescopic members 200 are elastic telescopic rods, that is, the telescopic rods have springs built in, which belongs to the prior art, and an outer mounting plate 300 is connected between the tops of the two elastic telescopic members 200. In actual production, the outer mounting plate 300 is installed on the outer shell of the vehicle, and the shape of the outer mounting plate 300 is designed according to the shape of the outer shell of the vehicle, and a rangefinder body 400 is arranged below the outer mounting plate 300, and the rangefinder body 400 is used for sound The transmission, reception and processing of waves, the principle of the rangefinder body 400 is the same as that of the sonic radar, except that a processor is added. A signal transmitting port 401 is fixed in the middle of the top of the rangefinder body 400, which is specially used for transmitting sound waves. A window 301 for placing the signal transmitting port 401 is opened in the middle of the installation outer plate 300. Electric push rods 500 for pushing the rangefinder body 400 to move are vertically fixed on both sides of the bottom of the installation outer plate 300. The extension of the electric push rod 500 can drive the rangefinder body 400 to move up and down. A protective component 600 is provided on the installation inner plate 100;

[0042] The protection component 600 drives the rangefinder body 400 to move downward and rotate, so that the signal transmitting port 401 on the rangefinder body 400 is reversed. After the signal transmitting port 401 is reversed, the reverse of the signal transmitting port 401 can be protected.

[0043] By adopting the above technical solution, during normal use, the telescopic adjustment of the electric push rod 500 adjusts the signal transmitting port 401 on the rangefinder body 400 to be within the window 301. The signal transmitting port 401 can appropriately adjust the distance of the sound wave detection according to the telescopic adjustment of the electric push rod 500. In the case of rain or sun exposure, the telescopic adjustment of the electric push rod 500 can push the rangefinder body 400 downward, so that the signal transmitting port 401 is away from the window 301. By installing the outer plate 300 to protect the signal transmitting port 401, the use of the signal transmitting port 401 will not be affected, and the reliability of the sound wave detection is guaranteed.

[0044] Before the car is hit, the electric push rod 500 is extended and retracted because the distance is detected to be relatively close. The extension and retraction of the electric push rod 500 pushes the rangefinder body 400 to move downward. When the signal transmitting port 401 on the rangefinder body 400 is completely separated from the window 301 and is located below the mounting outer plate 300, the electric push rod 500 stops extending and retracting. When the car shell is compressed and deformed, the mounting outer plate 300 is squeezed, which will squeeze the elastic telescopic member 200 to retract. At the same time, the rangefinder body 400 is driven to move downward together by the electric push rod 500, thereby facilitating the protection of the rangefinder body 400 and the signal transmitting port 401. At the same time, the rangefinder body 400 is rotated by the protective component 600 when it moves downward, so that the signal transmitting port 401 on the rangefinder body 400 is reversed, thereby further protecting the signal transmitting port 401, and extending the protection of the depth of deformation when the car is hit.

[0045] See also Figures 2 to 6 The protective assembly 600 includes a fixed plate 601 fixed on both sides of the top of the installation inner plate 100 and located between the elastic telescopic members 200. A moving groove 602 is opened in the middle of the fixed plate 601. The edges of the moving groove 602 are rounded and polished. Sliding columns 603 are connected between the moving groove 602 and the two ends of the middle of the rangefinder body 400. The rangefinder body 400 slides up and down on the moving groove 602 through the sliding column 603. The sliding column 603 is located below the electric push rod 500 to facilitate the connection between the electric push rod 500 and the sliding column 603. A gear 604 is fixed on the outer side of the sliding column 603 away from the rangefinder body 400. One end of the sliding column 603 is connected to the elastic A sliding sleeve 607 is rotatably connected between the outer sides of the upper part of the elastic telescopic member 200. By using the sliding sleeve 607, the sliding column 603 can be restricted from moving on the elastic telescopic member 200 when sliding in the moving groove 602. A limiting slide bar 608 is fixed on the outer side of the fixed plate 601 along the edge direction of the moving groove 602 to facilitate the installation of the rack 609. The limiting slide bar 608 extends from the middle to the bottom and is distributed with a rack 609 meshing with the gear 604. There is no rack 609 on the upper part of the limiting slide bar 608, so that the sliding column 603 will not rotate when the upper part of the limiting slide bar 608 moves, so that the signal transmitting port 401 on the rangefinder body 400 is located directly below the window 301, and normal use is not affected.

[0046] By adopting the above technical solution, the telescopic movement of the electric push rod 500 pushes the sliding column 603 to move in the moving groove 602, so that the rangefinder body 400 moves downward between the fixed plates 601. Since there is no rack 609 on the upper part of the limiting slide bar 608, the gear 604 will not be driven to rotate when the sliding column 603 moves. When it moves downward, the sliding sleeve 607 slides on the elastic telescopic member 200 at the same time. When the signal transmitting port 401 moves downward, it always corresponds to the position of the window 301. The distance movement of the signal transmitting port 401 can be retracted to below the installation outer plate 300 when it rains or is exposed to the sun, so as to prevent rain and exposure, so as to protect the signal transmitting port 401 and protect the reliability of the sound wave detection. On the other hand, the position of the signal transmitting port 401 can be appropriately changed to adjust the position of the sound wave detection in a short distance and expand the distance range of the sound wave detection.

[0047] Before the car is hit, the electric push rod 500 is extended and retracted, and the extension and retraction of the electric push rod 500 pushes the rangefinder body 400 to move downward. The electric push rod 500 pushes the sliding column 603 to move downward, and the downward movement of the sliding column 603 will drive the rangefinder body 400 to move downward. When the upper part of the limit slide bar 608 moves, the rangefinder body 400 will not rotate. At this time, the signal transmitting port 401 is completely separated from the window 301 and is located below the installation outer plate 300. In actual production, it is noted that the length of the upper part of the limit slide bar 608 is the same as or longer than the distance that the signal transmitting port 401 is completely separated from the window 301. When the electric push rod 500 stops extending and retracting, when the car shell is compressed and deformed, the installation outer plate 300 is squeezed, which will squeeze the elastic telescopic member 200 to return. Due to the limitation of the electric push rod 500, the sliding column 603 will be driven to move downward in the moving groove 602. At this time, the gear 604 contacts the rack 609, and the gear 604 rotates. The rotation of the gear 604 drives the rangefinder body 400 to rotate together through the sliding column 603. One end of the sliding column 603 rotates around the sliding sleeve 607, and the signal transmitting port 401 rotates with it. When the rangefinder body 400 moves downward, the damage caused by the compression and deformation of the vehicle shell can be avoided, and the signal transmitting port 401 can be rotated to avoid the damage caused by the compression of the front vehicle shell. When the sliding column 603 moves to the bottom of the moving groove 602, the signal transmitting port 401 is completely reversed, and protection is performed by installing the outer plate 300 and the elastic telescopic member 200.

[0048] See also Figure 2 and Figure 4A rotating hole 605 is provided at one end of the sliding column 603. When the rotating hole 605 is provided, attention should be paid to the thickness to prevent the thickness from being too thin and affecting normal use. A reinforcing ring can be added to the outer side of the sliding column 603 corresponding to the outer side of the rotating hole 605. A rotating rod 606 fixed to the sliding sleeve 607 is provided on the inner side of the rotating hole 605. Through the rotation cooperation between the rotating rod 606 and the rotating hole 605, the sliding sleeve 607 will not rotate with the sliding column 603.

[0049] By adopting the above technical solution, when the sliding column 603 moves downward to engage the gear 604 with the rack 609, the sliding column 603 rotates, and at the same time, the sliding column 603 drives the rangefinder body 400 to rotate together, and one end of the sliding column 603 rotates around the rotating rod 606 due to the cooperation between the rotating hole 605 and the rotating rod 606, and the sliding sleeve 607 does not rotate, so as to ensure that the sliding sleeve 607 can only move up and down on the elastic telescopic member 200, and will not move in other directions.

[0050] See also Figure 2 and Figure 5 A fixing ring is fixed at the bottom end of the electric push rod 500 so that it can be sleeved on the outside of the sliding column 603. The fixing ring is sleeved on the outside of the sliding column 603, and a bearing is provided between the inside of the fixing ring and the outside of the sliding column 603 to reduce the friction between the inside of the fixing ring and the outside of the sliding column 603.

[0051] By adopting the above technical solution, when the sliding column 603 drives the rangefinder body 400 to rotate, the electric push rod 500 will not hinder it.

[0052] See also Figure 1 A limiting plate 201 for limiting the position of the sliding sleeve 607 is fixed to the outer side of the top of the elastic telescopic member 200 .

[0053] By adopting the above technical solution, the position of the upper part of the sliding sleeve 607 can be limited.

[0054] See also Figure 1 and Figure 2 An alarm 700 is fixed to one side of the bottom of the rangefinder body 400 , and the alarm 700 is connected to the rangefinder body 400 .

[0055] By adopting the above technical solution, when the distance is close, the rangefinder body 400 can make the alarm 700 work and issue an alarm.

[0056] See also Figure 7 A cleaning assembly 800 is vertically fixed at the middle of the top of the inner plate 100 , and the cleaning assembly 800 is used for cleaning when the signal transmitting port 401 is reversed.

[0057] By adopting the above technical solution, when the signal transmitting port 401 is reversed and enters into the cleaning component 800 , the signal transmitting port 401 is cleaned by the cleaning component 800 to clean the external dust or water to ensure the normal use of the signal transmitting port 401 .

[0058] See also Figure 7 and Figure 8 The cleaning component 800 includes a shell 801 fixed to the middle of the top of the mounting inner plate 100. The shell 801 is made of plastic. A cleaning groove 802 is provided in the middle of the top of the shell 801 to facilitate the placement of the signal transmitting port 401. A cleaning plate 803 is provided at the bottom of the cleaning groove 802. The shape of the cleaning plate 803 is adapted to the outer side of the signal transmitting port 401, so as to better clean the outer side of the signal transmitting port 401. A moving rod 804 is vertically fixed to the middle of the bottom end of the cleaning plate 803. A return spring 805 is connected between the outer side of the moving rod 804 and the shell 801. When the moving rod 804 moves downward, the return spring 805 can drive the moving rod 804 to return to its original position through elastic recovery. Retraction sleeves 806 are fixed at both sides of the top of the cleaning groove 802 in the shell 801 to facilitate the placement of the block 807 and the elastic return rod 808. The retraction sleeve 806 is slidably connected with the block 807 for limiting the signal transmitting port 401. An elastic return rod 808 is connected between the end of the block 807 away from the cleaning groove 802 and the inside of the retraction sleeve 806. The elastic return rod 808 is a kind of elastic telescopic rod.

[0059] By adopting the above technical solution, when the signal transmitting port 401 is reversed, it will enter the cleaning groove 802 on the housing 801, and the elastic reset rod 808 drives the card block 807 to clamp the signal transmitting port 401. When the signal transmitting port 401 is reversed and enters the cleaning groove 802, it contacts the cleaning plate 803. The signal transmitting port 401 is cleaned by the cleaning plate 803, and the cleaning plate 803 can move downward following the reverse of the signal transmitting port 401 through the elastic expansion and contraction of the moving rod 804 and the reset spring 805, so that the cleaning plate 803 is always in contact with the cleaning plate 803, and the signal transmitting port 401 is reversed and clamped in the cleaning groove 802, so that the signal transmitting port 401 enters the housing 801, which is conducive to further protecting the signal transmitting port 401.

[0060] See also Figure 7 and Figure 8 A connecting line 809 is connected between the middle of the other end of the block 807 and one side of the bottom end of the moving rod 804.

[0061] By adopting the above technical solution, the electric push rod 500 is extended and retracted, driving the signal transmitting port 401 to continue to move downward. The downward movement of the signal transmitting port 401 squeezes the cleaning plate 803 and drives the moving rod 804 to move downward. The downward movement of the moving rod 804 pulls the block 807 back to contact the restriction on the signal transmitting port 401. At the same time, the signal transmitting port 401 continues to rotate. Under the condition of releasing the restriction while rotating, and under the elastic recovery deformation of the elastic telescopic member 200, the signal transmitting port 401 is disengaged from the cleaning slot 802 for normal use.

[0062] See also Figure 7 and Figure 8 The cleaning plate 803 includes a bottom plate arranged at the top of the moving rod 804, a water-absorbing cotton is arranged at the top of the bottom plate, and a dust-removing cloth is arranged at the top of the water-absorbing cotton.

[0063] By adopting the above technical solution, the dust on the signal transmitting port 401 is firstly removed by using a dust removal cloth, and then the moisture on the outside of the signal transmitting port 401 is absorbed by using absorbent cotton.

[0064] The above description is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, shall make equivalent replacements or changes according to the technical solution and its improved concept of the present invention, which shall be covered by the protection scope of the present invention.

Claims

1. An acoustic warning device for autonomous driving, characterized in that: The invention comprises an installation inner plate (100) installed in the front end or rear end of a vehicle, elastic telescopic parts (200) are vertically arranged on both sides of the installation inner plate (100), an installation outer plate (300) is connected between the top ends of the two elastic telescopic parts (200), a rangefinder body (400) is arranged below the installation outer plate (300), a signal transmitting port (401) is fixed in the middle of the top end of the rangefinder body (400), a window (301) for placing the signal transmitting port (401) is opened in the middle of the installation outer plate (300), electric push rods (500) for pushing the rangefinder body (400) to move are vertically fixed on both sides of the bottom end of the installation outer plate (300), and a protective component (600) is arranged on the installation inner plate (100); The protection component (600) drives the rangefinder body (400) to move downward and rotate, so that the signal transmission port (401) on the rangefinder body (400) is reversed; The protection component (600) comprises a fixed plate (601) fixed on both sides of the top of the installation inner plate (100) and located between the elastic telescopic parts (200); a moving groove (602) is provided in the middle of the fixed plate (601); sliding columns (603) are connected between the moving groove (602) and the two ends of the middle of the rangefinder body (400); the sliding column (603) is located below the electric push rod (500); a gear (604) is fixed to the outer side of one end of the sliding column (603) away from the rangefinder body (400); a sliding sleeve (607) is rotatably connected between one end of the sliding column (603) and the outer side of the upper part of the elastic telescopic part (200); a limiting sliding rod (608) is fixed to the outer side of the fixed plate (601) along the edge direction of the moving groove (602); the limiting sliding rod (608) extends from the middle to the bottom and is provided with a rack (609) meshing with the gear (604).

2. The acoustic wave warning device for automatic driving according to claim 1, characterized in that: A rotating hole (605) is formed at one end of the sliding column (603), and a rotating rod (606) fixed to the sliding sleeve (607) is formed inside the rotating hole (605).

3. The acoustic wave warning device for automatic driving according to claim 1, characterized in that: A fixing ring is fixed at the bottom end of the electric push rod (500), the fixing ring is sleeved on the outside of the sliding column (603), and a bearing is provided between the inside of the fixing ring and the outside of the sliding column (603).

4. The sonic warning device for autonomous driving according to claim 1, characterized in that: A limiting plate (201) for limiting the position of the sliding sleeve (607) is fixed on the outer side of the top of the elastic telescopic member (200).

5. The sonic warning device for autonomous driving according to claim 1, characterized in that: An alarm (700) is fixed to one side of the bottom of the rangefinder body (400), and the alarm (700) is connected to the rangefinder body (400).

6. The acoustic wave warning device for automatic driving according to claim 1, characterized in that: A cleaning assembly (800) is vertically fixed at the middle of the top end of the installation inner plate (100), and the cleaning assembly (800) is used for cleaning when the signal transmission port (401) is reversed.

7. The sonic warning device for automatic driving according to claim 6, characterized in that: The cleaning assembly (800) comprises a shell (801) fixed to the middle of the top of the mounting inner plate (100); a cleaning groove (802) is provided in the middle of the top of the shell (801); a cleaning plate (803) is provided at the bottom of the cleaning groove (802); a moving rod (804) is vertically fixed to the middle of the bottom of the cleaning plate (803); a reset spring (805) is connected between the outer side of the moving rod (804) and the shell (801); retraction sleeves (806) are fixed at both sides of the top of the cleaning groove (802) in the shell (801); a block (807) for limiting the signal transmitting port (401) is slidably connected in the retraction sleeve (806); and an elastic reset rod (808) is connected between the end of the block (807) away from the cleaning groove (802) and the inside of the retraction sleeve (806).

8. The sonic warning device for automatic driving according to claim 7, characterized in that: A connecting line (809) is connected between the middle of the other end of the block (807) and one side of the bottom end of the moving rod (804).

9. The sonic warning device for automatic driving according to claim 7, characterized in that: The cleaning plate (803) comprises a bottom plate arranged at the top end of the moving rod (804), the top end of the bottom plate is provided with absorbent cotton, and the top end of the absorbent cotton is provided with a dust removal cloth.

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