WO2022116769A1

WO2022116769A1 - Camera module and unmanned vehicle

Info

Publication number: WO2022116769A1
Application number: PCT/CN2021/128462
Authority: WO
Inventors: 宁柯军
Original assignee: 北京三快在线科技有限公司
Priority date: 2020-12-01
Filing date: 2021-11-03
Publication date: 2022-06-09

Abstract

A camera module and an unmanned vehicle. The camera module comprises: a camera (10); a mounting base (20), the camera (10) being mounted on the mounting base (20); a light-transmitting protective cover (30) fitted over the camera (10) and movably provided on the mounting base (20); and a driving mechanism (40) located on an inner side of the light-transmitting protective cover (30) and used for driving the light-transmitting protective cover (30) to vibrate with respect to the camera (10) and the mounting base (20).

Description

Camera Modules and Unmanned Vehicles

This application claims the priority of the Chinese patent application with the application number 202011388203.4 filed on December 01, 2020 and the invention titled "Camera Module and Unmanned Vehicle", and the application number filed on December 01, 2020 "202022855105.9", the priority of the Chinese patent application titled "Camera Module and Unmanned Vehicle" for the utility model, the entire contents of which are incorporated in this application by reference.

technical field

The present disclosure relates to the technical field of camera cleaning, and in particular, to a camera module and an unmanned vehicle equipped with the camera module.

Background technique

With the rapid development of logistics and transportation, unmanned vehicles are also widely used as a kind of intelligent robot equipment. Usually, an unmanned vehicle requires a computing unit to perceive the environment based on the information collected by various sensors, so as to generate control decisions, and then control the motion behavior of the vehicle. Therefore, it is very important for unmanned vehicles to ensure that the sensors are in normal working condition.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide a camera module and an unmanned vehicle equipped with the camera module, so as to at least partially solve the problems existing in the related art.

In order to achieve the above purpose, the present disclosure provides a camera module, comprising:

Camera;

a mounting seat, on which the camera is mounted;

a light-transmitting protective cover, sleeved on the outer side of the camera, and movably arranged on the mounting seat;

A driving mechanism is located inside the light-transmitting protective cover and used to drive the light-transmitting protective cover to vibrate relative to the camera and the mounting seat.

Optionally, the drive mechanism is an electromagnetic drive mechanism, and the electromagnetic drive mechanism includes an electromagnetic excitation member that changes magnetism by inputting an excitation current, and a magnetic member that magnetically cooperates with the electromagnetic excitation member, the electromagnetic excitation member and the magnetic excitation member. One of the pieces is arranged on the mounting seat, and the other is arranged on the light-transmitting protective cover.

Optionally, the magnetic poles of the magnetic element are located at both ends of the magnetic element relative to the axial direction of the mounting seat, so that when the electromagnetic excitation element changes the magnetism, the light-transmitting protective cover is located along the axial direction of the mounting seat. Reciprocating vibration.

Optionally, the magnetic member includes a permanent magnet, the electromagnetic excitation member includes an excitation coil, one of the permanent magnet and the excitation coil is fixed on the inner wall of the light-transmitting protective cover, and the other is disposed on the inner wall of the light-transmitting protective cover. On the mounting seat, the permanent magnet and the excitation coil are arranged at intervals relative to each other, and the excitation coil is electrically connected with a lead wire, and the lead wire is used to pass through the light-transmitting protective cover to connect to an excitation power source.

Optionally, the permanent magnet is formed in an annular shape and is sleeved on the outer wall of the mounting seat in the axial direction, and has magnetic poles at both ends in the axial direction, and the driving mechanism further includes an I-shaped bobbin, so The I-shaped bobbin includes a winding tube portion and stop discs located at both ends of the winding tube portion, the stop discs are fixed on the inner wall of the light-transmitting protective cover, and the excitation coil is spirally wound in the circumferential direction. in the winding pipe.

Optionally, the light-transmitting protective cover is movably connected to the mounting seat through an elastic member, and a cavity is formed between the light-transmitting protective cover and the mounting seat, and the driving mechanism is accommodated in the cavity.

Optionally, the elastic member is an elastic diaphragm, the elastic diaphragm is configured as a ring-shaped sheet, the inner edge of the elastic diaphragm is fixedly connected with the outer wall of the mounting seat, and the outer edge of the elastic diaphragm is It is fixedly connected with the inner wall of the light-transmitting protective cover.

Optionally, there are multiple elastic diaphragms, which are respectively arranged at intervals along the axial direction of the light-transmitting protective cover.

Optionally, the light-transmitting protective cover is formed with a cavity for accommodating the driving mechanism, and both ends of the cavity are provided with a first wall and a second wall connected to the mounting seat, and the mounting seat is The outer peripheral wall is provided with a first chute and a second chute extending in the axial direction, the first wall is slidably sleeved in the first chute, and the second wall is slidably sleeved in the first chute. In the second chute, a plurality of springs are further arranged between the light-transmitting protective cover and the mounting seat, and a plurality of the springs are respectively arranged in the first chute and the second chute, and is used to provide elastic force for the first wall and the second wall.

Another aspect of the present disclosure also provides an unmanned vehicle, the unmanned vehicle includes the camera module as described above.

Through the above technical solutions, in the embodiment of the present disclosure, the light-transmitting protective cover is arranged on the outside of the camera to protect the camera from external collisions and from contamination by water droplets, dust and other contaminants, so that the camera always works in a dry and clean environment. Improve the service life of the camera, and at the same time improve the protection level of the camera module. Not only that, the light-transmitting cover can also vibrate relative to the camera or the mount to shake off the dirt accumulated on the light-transmitting cover, restore the cleaning of the light-transmitting cover, and ensure the clarity of the image captured by the camera. In addition, the light-transmitting protective cover can be powered by a driving mechanism to make it vibrate, so that the dirt can be separated from the light-transmitting protective cover under the action of inertial force, thereby improving the self-cleaning effect of the light-transmitting protective cover. In addition, the above-mentioned light-transmitting protective cover, driving mechanism and other components do not need to be highly customized. In particular, the material cost and manufacturing cost of the light-transmitting protective cover can be much lower than that of the camera. After the material is corroded or collided and deformed, the cost of replacing the light-transmitting protective cover is low, so as to reduce the use cost of the camera module.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. In the attached image:

1 is a schematic diagram of an external structure of a camera module in an embodiment of the present disclosure;

2 is a cross-sectional view of a camera module in an embodiment of the present disclosure, wherein the light-transmitting protective cover is in an initial position where no vibration occurs;

3 is a cross-sectional view of a camera module according to an embodiment of the present disclosure, wherein the light-transmitting protective cover is located in a forward vibration position;

4 is a cross-sectional view of a camera module in another embodiment of the present disclosure, wherein the light-transmitting protective cover is in a position that vibrates backwards;

5 is a cross-sectional view of a camera module in yet another embodiment of the present disclosure, wherein the light-transmitting protective cover is in an initial position where no vibration occurs;

FIG. 6 is a partial enlarged view of area A in FIG. 5 .

illustration

1. Camera module; 10. Camera; 110. Transmission line; 20. Mounting seat; 30. Light-transmitting protective cover; 310, Front end wall; 320, First wall; 330, Second wall; 311, Arc part; 40 410, magnetic element; 411, permanent magnet; 420, electromagnetic excitation element; 421, excitation coil; 422, lead wire; 430, I-shaped bobbin; 50, elastic piece; 510, elastic diaphragm; 520, spring; C, cavity; T1, first chute; T2, second chute; H, wiring hole;

H1, the first wiring hole; H2, the second wiring hole.

The above-mentioned drawings have shown clear embodiments of the present disclosure, and will be described in more detail hereinafter. The drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by referring to specific embodiments.

Detailed ways

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

In the present disclosure, unless otherwise stated, the use of azimuth words such as "front" means that the shooting orientation of the camera is front, "rear" means the opposite orientation to the front, "inside" and "outside" mean Inside and outside of the corresponding part profile. Furthermore, the terms "first", "second", etc., are used in the present disclosure to distinguish one element from another and have no order or importance. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. In addition, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

For visual or optical sensors such as cameras, when there is a lot of dust on the surface of the camera lens or water droplets are hung on the surface of the camera lens, it will cause photosensitive and image distortion problems, which will seriously affect the processing results of computer vision and lead to unmanned vehicle control errors. . The processing solutions of most car cameras only guarantee the IP protection level of the cameras, and the cleaning relies on manual maintenance operations, and there is a lack of automated lens cleaning measures. In recent years, some high-end cars with ADAS (Advanced Driving Assistance System) functions have begun to pay attention to the self-cleaning of cameras, such as water jet + jet, micro wipers, etc. to clean. However, the water jet + jet scheme involves the design of water pumps and pipelines, and the implementation and daily maintenance are relatively complex and require high requirements; the micro wiper has a good cleaning effect, but has many parts and a complex structure, and will block the camera and wiper during cleaning. When rubbing against the camera, it is easy to produce scratches and reduce the life of the camera.

Referring to FIGS. 1 and 2 , an embodiment of the present disclosure provides a camera module 1 , the camera module 1 includes a camera 10 , a mounting seat 20 , a light-transmitting protective cover 30 and a driving mechanism 40 . Specifically, the camera 10 is mounted on the mounting seat 20; the light-transmitting protective cover 30 is sleeved on the outer side of the camera 10, and is movably arranged on the mounting seat 20; the driving mechanism 40 is located inside the light-transmitting protective cover 30 and is used to drive the transparent protective cover 30. The light shield 30 vibrates relative to the camera 10 and mount 20 .

According to the above structural features, in the daily use of the camera 10 , dirt such as dust and water droplets will gradually accumulate on the light-transmitting protective cover 30 and affect the clarity of the images captured by the camera 10 . In this case, the driving mechanism 40 can drive the light-transmitting protective cover 30 to vibrate relative to the camera 10 and the mount 20 , for example, it can vibrate relative to the axial direction of the camera 10 and the mount 20 , or relative to the camera 10 and the mount 20 . Radial vibration, or may vibrate in other directions relative to the camera 10 and the mount 20 , which is not limited by the present disclosure. Among them, the vibration mode of the driving mechanism 40 for driving the light-transmitting protective cover 30 can be flexibly designed, for example, it can continuously vibrate in a certain direction (such as the axial direction of the camera 10 ); it can also vibrate periodically in multiple directions, that is Vibrates reciprocatingly along the first direction in the first time interval, and vibrates reciprocatingly along the second direction in the second time interval, so as to vibrate periodically in this mode; the vibration frequency can be a constant value or a variable value, which the present disclosure addresses to this No restrictions apply.

Through the above technical solutions, in the embodiment of the present disclosure, the light-transmitting protective cover 30 is arranged on the outside of the camera 10 to protect the camera 10 from external collisions and from contamination by water droplets, dust and other contaminants, so that the camera 10 is always dry and clean. Working in the environment, the service life of the camera 10 can be improved, and the protection level of the camera module 1 can be improved at the same time. Not only that, the light-transmitting protective cover 30 can also vibrate relative to the camera 10 or the mounting base 20 to shake off the dirt accumulated on the light-transmitting protective cover 30 , restore the cleaning of the light-transmitting protective cover 30 , and ensure that the image captured by the camera 10 is safe. clarity. In addition, the light-transmitting protective cover 30 can be powered by the driving mechanism 40 to make it vibrate, so that the dirt can be separated from the light-transmitting protective cover 30 under the action of inertial force, thereby improving the self-cleaning effect of the light-transmitting protective cover 30 . In addition, the above-mentioned parts such as the light-transmitting protective cover 30 and the driving mechanism 40 do not need to be highly customized. In particular, the material cost and manufacturing cost of the light-transmitting protective cover 30 can be much lower than that of the camera 10. The light-transmitting protective cover 30 is arranged on the camera Outside 10 , after being eroded by dirt or deformed by collision, the cost of replacing the light-transmitting protective cover 30 is low, so as to reduce the use cost of the camera module 1 .

It should be noted that the mounting base 20 is used as the mounting carrier of each component in the camera module 1 to provide mounting points for each component in the camera module 1 through a direct or indirect connection relationship, such as the camera 10, light transmission protection Both the cover 30 and the drive mechanism 40 may be mounted on the mount 20 . Wherein, in order to pull the wiring harness of the camera 10 and the driving mechanism 40 in the light-transmitting protective cover 30 out of the light-transmitting protective cover 30 , a plurality of wiring holes H may be provided on the mounting seat 20 . For example, the mounting seat 20 may be provided with at least one first wiring hole H1 , one end of the first wiring hole H1 is arranged toward the camera 10 , and the other end extends through the mounting seat 20 to the rear end surface of the mounting seat 20 . In this way, the camera 10 The transmission line 110 connected to the above may extend to the outside of the light-transmitting protective cover 30 through the first wiring hole H1, so as to be connected with external components such as a controller or a power supply. The transmission line 110 on the camera 10 includes various wiring harnesses such as signal lines, power lines, etc. There may also be multiple first wiring holes H1 , and the transmission line 110 may pass through different first wiring holes H1 according to the line type.

The light-transmitting protective cover 30 refers to a structure that is sleeved on the outside of the camera 10, and the front end wall 310 and the side wall of the light-transmitting protective cover 30 should be separated from the camera 10 and the mounting seat 20 by a certain distance to avoid light transmission protection. When the cover 30 vibrates, it may cause unnecessary collision to the camera head 10 or cause scratches and other damages to the camera head 10 due to being too close to the camera head 10 . In addition, it should also be understood that, in order to prevent water, dust and other contaminants from accumulating on the camera 10, the light-transmitting protective cover 30 is sleeved on the outside of the camera 10, but the light-transmitting protective cover 30 cannot block the image captured by the camera 10. The front end wall 310 of the light shield 30 is made of a transparent material, such as glass, transparent plastic, transparent resin material, etc.; wherein, the light shield 30 can be integrally formed from a transparent material into an overall transparent light shield 30. Alternatively, the light-transmitting protective cover 30 may be composed of a non-light-transmitting side wall and a light-transmitting front-end wall 310, and the front-end wall 310 may be an independent light-transmitting sheet to allow outside light to enter the light-transmitting protective cover to be captured by the camera 10. collected. In addition, the configuration of the light-transmitting protective cover 30 can be designed according to the specific structural features of the camera 10 and the mounting seat 20 , for example, it can be formed into a cylindrical structure or a rectangular box-shaped structure covering the outside of the camera 10 and the mounting seat 20 , or a hemispherical structure, but the present disclosure is not limited thereto.

The above-mentioned driving mechanism 40 may be any driving mechanism 40 capable of driving the light-transmitting protective cover 30 to vibrate relative to the mounting base 20 . In an example of the present disclosure, as shown in FIG. 2 to FIG. 5 , the driving mechanism 40 is an electromagnetic driving mechanism, and the electromagnetic driving mechanism includes an electromagnetic excitation member 420 that changes the magnetism by inputting an excitation current, and an electromagnetic excitation member 420 connected with the electromagnetic excitation member 420 . Magnetic fittings 410 for magnetic engagement. The electromagnetic excitation member 420 generates a magnetic field after the current is input, and can generate mutual attraction or mutual repulsion magnetic force with the magnetic member 410 within the range of the magnetic field, so as to generate relative displacement between the electromagnetic excitation member 420 and the mounting seat 20 . Further, after the excitation current is input into the electromagnetic excitation member 420, the magnetic poles of the magnetic field generated by the electromagnetic excitation member 420 will be continuously commutated, so as to convert the magnetic force with the magnetic member 410 between the attractive force and the repulsive force. The excitation member 420 can vibrate back and forth relative to the magnetic member 410 .

Wherein, the vibration modes of the electromagnetic excitation member 420 and the magnetic member 410 may be various. In terms of the vibration direction, as mentioned above, the electromagnetic excitation member 420 or the magnetic member 410 can drive the protective cover to vibrate continuously in a certain direction (such as the axial direction of the camera 10 ) or vibrate periodically in multiple directions; In terms of excitation mode, the excitation current input to the electromagnetic excitation element 420 may be alternating current, unidirectional pulsating current, or bidirectional pulsating current, etc., but is not limited to this. In terms of vibration frequency, the vibration frequency can be designed so that the protective cover has as large an amplitude as possible within the allowable range of motion, so that dirt can more easily escape from the light-transmitting protective cover 30 and improve the cleaning effect. In an example, if the electromagnetic excitation member 420 is excited by a unidirectional pulsating current or a bidirectional pulsating current, the frequency thereof may be between 2 and 10 Hz, for example, between 4 and 8 Hz, such as 5 Hz or 6 Hz, The present disclosure does not limit this; in another example, if the electromagnetic excitation member 420 is excited by an alternating current, the frequency of the alternating current can be set to be close to the first-order natural frequency of the light-transmitting protective cover 30, so that the light-transmitting cover 30 can transmit light. The shield 30 can have a large amplitude. The above-mentioned vibration directions, excitation modes and vibration frequencies can be reasonably combined to obtain multiple vibration modes without conflict.

Moreover, one of the electromagnetic excitation member 420 and the magnetic member 410 is arranged on the mounting base 20, and the other is arranged on the light-transmitting protective cover 30, so that when the electromagnetic excitation member 420 reciprocates relative to the magnetic member 410, The light-transmitting protective cover 30 also vibrates back and forth relative to the mounting base 20 . The embodiment of the present disclosure adopts an electromagnetic drive mechanism to drive the light-transmitting protective cover 30 with better controllability, that is, the amplitude and frequency of vibration can be changed by controlling the magnitude and frequency of the excitation current; and the electromagnetic drive mechanism is simple and compact in structure, occupying a mounting seat The space of 20 is small, and the size of the camera module 1 can be reduced as much as possible.

It should be understood that the vibration direction of the light-transmitting protective cover 30 is related to the orientation of the magnetic poles of the electromagnetic excitation member 420 and the magnetic member 410. The vibration direction of the shield 30 is also flexible.

In the embodiment of the present disclosure, as shown in FIG. 2 to FIG. 5 , the magnetic poles of the magnetic member 410 are located at both ends of the magnetic member 410 relative to the axial direction of the mounting seat 20 , so that when the electromagnetic excitation member 420 changes the magnetism, the transparent The light shield 30 vibrates back and forth along the axial direction of the mount 20 . In this way, after the electromagnetic excitation element 420 inputs the excitation current, it can drive the light-transmitting shield 30 to vibrate in the axial direction relative to the mounting seat 20 , and the dirt on the front end wall 310 of the light-transmitting shield 30 has a tendency to vibrate in the axial direction when vibrating. Since the inertial force is perpendicular to the front end wall 310 , the dirt is more easily detached from the front end wall 310 , and the self-cleaning effect of the light-transmitting protective cover 30 is improved.

In the example of the present disclosure, the electromagnetic excitation member 420 may be an inductor, a capacitor, an electromagnet, an excitation coil, etc., and the magnetic member 410 may be an electromagnet, a permanent magnet 411, etc., which is not limited in this disclosure.

For example, the magnetic member 410 may include a permanent magnet 411, and the electromagnetic excitation member 420 may include an excitation coil 421. One of the permanent magnet 411 and the excitation coil 421 is fixed on the inner wall of the light-transmitting shield 30, and the other is disposed on the mounting seat 20 , the permanent magnets 411 and the excitation coil 421 are relatively spaced apart, and the excitation coil 421 is electrically connected with lead wires 422 , which are used to penetrate the light-transmitting protective cover 30 to connect to the excitation power source. According to the above installation method, the excitation coil 421 and the permanent magnet 411 are arranged at intervals. When there is relative movement between the two, no frictional resistance is generated, and the vibration efficiency is high. In addition, the excitation coil 421 and the permanent magnet 411 have simple structures and low processing difficulty.

Here, in order to input the excitation current to the excitation coil 421 , the excitation coil 421 is formed with a lead wire 422 for transmitting current. In order to extend the lead wire 422 to the outside of the transparent protective cover 30 , a second The wiring hole H2, one end of the second wiring hole H2 is located on the side wall of the mounting seat 20, and the other end extends through the mounting seat 20 to the rear end surface of the mounting seat 20, and the lead 422 passes through the second wiring hole H2 through the light-transmitting protective cover 30 and passes through the wiring hole H2. Connect to an external excitation power supply. In addition, the lead 422 of the excitation coil 421 may be formed of wires extending from the start section and the end section of the excitation coil 421 itself, or may be other wires connected to the excitation coil 421, which are not limited in the present disclosure.

One of the permanent magnet 411 and the excitation coil 421 mentioned above is fixed on the inner wall of the light-transmitting protective cover 30 , and the other is disposed on the mounting seat 20 . Specifically, in the first example of the present disclosure, the excitation coil 421 may be fixed on the inner wall of the light-transmitting protective cover 30 , and the permanent magnet 411 is disposed on the mounting seat 20 . As shown in FIG. 3 , the permanent magnet 411 is formed in an annular shape and is sleeved on the outer wall of the mounting seat 20 in the axial direction, and has magnetic poles at both ends in the axial direction. Wherein, the ring here is not limited to a circular ring, but also includes a square ring or a ring of other shapes. That is to say, the permanent magnet 411 is formed into an annular shape that fits according to the shape of the outer wall of the mounting seat 20 . Furthermore, in an optional embodiment of the present disclosure, the permanent magnet 411 may be interference fit on the mounting seat 20 , or a mounting slot for mounting the permanent magnet 411 may be formed on the mounting seat 20 , or the permanent magnet 411 may be mounted on the mounting seat 20 through a structure such as a snap. on the seat 20 to avoid relative displacement between the permanent magnet 411 and the mounting seat 20 .

The driving mechanism 40 also includes an I-shaped bobbin 430 , and the I-shaped bobbin 430 includes a winding tube portion 431 and stop discs 432 located at both ends of the winding tube portion 431 . On the inner wall, the excitation coil 421 is spirally wound around the winding pipe portion 431 in the circumferential direction. In this way, the excitation coil 421 can be fixed on the light-transmitting shield 30, and when the permanent magnet 411 drives the excitation coil 421 to move in the axial direction, the excitation coil 421 can drive the light-transmitting shield 30 to move through the I-shaped bobbin 430 . It should be noted here that the inner wall of the winding tube 431 is spaced apart from the outer peripheral wall of the permanent magnet 411 to prevent the winding tube 431 from interfering with the permanent magnet 411 .

Optionally, the stop plate 432 of the I-shaped bobbin 430 can be fixed on the inner wall of the light-transmitting protective cover 30 by means of bonding, clipping, etc., so as to keep the I-shaped bobbin 430 and the light-transmitting protective cover. Relative stillness between 30.

In the second example of the present disclosure, as shown in FIG. 4 , the permanent magnet 411 may be fixed on the inner wall of the light-transmitting protective cover 30 , and the excitation coil 421 is provided on the mounting seat 20 . Specifically, the excitation coil 421 can be directly wound on the peripheral wall of the mounting seat 20 , and the permanent magnet 411 can be formed in a ring shape matching the inner wall of the light-transmitting shield 30 , such as a circular ring, a square ring, and the like. And the permanent magnet 411 has magnetic poles at both ends in the axial direction, so that the excitation coil 421 and the permanent magnet 411 can vibrate relative to each other in the axial direction, thereby improving the self-cleaning effect. Here, the permanent magnets 411 may be directly bonded to the inner wall of the light-transmitting shield 30 to keep the permanent magnet 411 and the light-transmitting shield 30 relatively stationary.

In other embodiments of the present disclosure, in addition to the electromagnetic drive mechanism, the above-mentioned driving mechanism 40 may also be a linear driving cylinder, and the piston rod of the linear driving cylinder can reciprocate relative to the cylinder body, thereby driving the light-transmitting protective cover 30 relative to the cylinder body. The mounting base 20 vibrates back and forth; alternatively, the driving mechanism 40 may also be a gear train with an eccentric cam, and the motor drives the eccentric cam to rotate to cause vibration of the light-transmitting protective cover 30; this disclosure does not limit this.

In the embodiment of the present disclosure, as shown in FIG. 2 to FIG. 6 , due to the relative displacement between the light-transmitting protective cover 30 and the mounting seat 20 , the light-transmitting protective cover 30 is movably connected to the mounting seat through the elastic member 50 . seat 20 to allow vibration of the light-transmitting shield 30 . In addition, a cavity C is also formed between the light-transmitting protective cover 30 and the mounting seat 20 , and the cavity C separates the inner wall of the light-transmitting protective cover 30 from the outer wall of the mounting seat 20 to provide movement for the vibration of the light-transmitting protective cover 30 space. Moreover, the driving mechanism 40 can be accommodated in the cavity C, so that the structure of the camera module 1 is more compact.

The above-mentioned elastic member 50 may have various forms. In an example of the present disclosure, the elastic member 50 may be an elastic diaphragm 510, the elastic diaphragm 510 is configured as a ring-shaped sheet, and the inner edge of the elastic diaphragm 510 is connected to the mounting seat 20. The outer wall of the elastic diaphragm 510 is fixedly connected with the inner wall of the light-transmitting protective cover 30 . When the light-transmitting protective cover 30 vibrates, the outer edge of the elastic diaphragm 510 will shake relative to the inner edge of the elastic diaphragm 510 in the axial direction to assist the light-transmitting protective cover 30 to vibrate.

The elastic film 510 can be a metal sheet that allows a certain amount of deformation, or can be a plastic sheet, etc. The outer edge of the elastic film 510 can be integrally formed with the light-transmitting protective cover 30 or connected by bonding. The elastic film 510 The inner edge of the mounting seat 20 can be connected by bonding or embedded, which is not limited in the present disclosure.

In an optional embodiment of the present disclosure, there are multiple elastic diaphragms 510, which are respectively arranged at intervals along the axial direction of the light-transmitting protective cover 30, and the plurality of elastic diaphragms 510 can provide a plurality of supporting points for the light-transmitting protective cover 30, The light-transmitting protective cover 30 is effectively prevented from being displaced relative to the camera 10 and the mounting seat 20 , and the vibration stability of the light-transmitting protective cover 30 is improved. For example, as shown in FIG. 2 , there are two elastic diaphragms 510 , which are respectively disposed on both sides of the driving mechanism 40 in the light-transmitting protective cover 30 to provide two supporting points for the light-transmitting protective cover 30 to ensure light-transmitting protection. Vibration stability of the cover 30 . In addition, the two elastic diaphragms 510 are disposed between the light-transmitting protective cover 30 and the mounting seat 20, and are enclosed with the inner wall of the light-transmitting protective cover 30 and the outer wall of the mounting seat 20 to form a cavity C, the cavity C is used for to accommodate the drive mechanism 40 .

In another example of the elastic member 50 of the present disclosure, as shown in FIG. 5 , the light-transmitting protective cover 30 is formed with a cavity C for accommodating the driving mechanism 40 . The first wall 320 and the second wall 330, the outer peripheral wall of the mounting seat 20 is provided with a first sliding groove T1 and a second sliding groove T2 extending in the axial direction, and the first wall 320 is slidably sleeved on the first sliding groove. In the groove T1, the second wall 330 is slidably sleeved in the second sliding groove T2, and a plurality of springs 520 are further arranged between the light-transmitting protective cover 30 and the mounting seat 20, and the plurality of springs 520 are respectively arranged on the first sliding groove T2. The groove T1 and the second sliding groove T2 are used to provide elastic force for the first wall 320 and the second wall 330 .

Further, the arrangement of the spring 520 is illustrated by taking the first wall 320 and the first chute T1 as an example. The first chute T1 is configured as an annular chute surrounding the side wall of the mounting seat 20. As shown in FIG. 6 , the first wall 320 is sleeved in the first chute T1, and springs 520 are respectively provided on both sides of the first wall 320. On the wall 320 , there are a plurality of springs 520 , which are respectively arranged at intervals along the circumferential direction of the mounting seat 20 . When the first wall 320 vibrates back and forth in the axial direction of the mounting seat 20 relative to the first sliding groove T1 , the spring 520 provides elastic force for the first wall 320 .

In addition, in order to reduce the frictional force between the first wall 320 and the first sliding groove T1, the portion of the first wall 320 in contact with the sliding groove may be rounded.

It should be understood that the arrangement of the spring 520 between the second wall 330 and the second chute T2 is the same as the arrangement of the spring 520 between the first wall 320 and the first chute T1.

An unmanned vehicle includes the camera module 1 as described above. The unmanned vehicle has all the beneficial effects of the above-mentioned camera module 1, which will not be repeated here. When the unmanned vehicle is applied to logistics and distribution, that is, the unmanned delivery vehicle, the driving mechanism 40 of the camera module 1 can be signal-connected with the control center of the unmanned delivery vehicle, so that the self-cleaning of the camera 10 of the unmanned delivery vehicle can be realized, especially It can be used on the road in rainy days to achieve better cleaning effect. Wherein, each unmanned vehicle can be equipped with multiple camera modules 1 , so as to meet the usage requirements of multiple self-cleaning camera modules 1 . The unmanned vehicle can also be an unmanned vehicle, the camera module 1 can be installed on, for example, the roof or the front bumper of the unmanned vehicle, and the driving mechanism 40 of the camera module 1 can be connected with the intelligence of the unmanned vehicle. The driver signal is connected, so that more accurate road information, obstacle information, etc. can also be obtained through self-cleaning, which provides further guarantee for the safety performance of the driverless car.

In addition, the camera module 1 provided in the present disclosure can also be applied to various visual or optical sensors, so that the self-cleaning function of the camera module 1 can keep the sensor in a normal working state and ensure the accuracy of information collected by the sensor.

The optional embodiments of the present disclosure have been described above in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above-mentioned embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure. , these simple modifications belong to the protection scope of the present disclosure.

In addition, it should be noted that each specific technical feature described in the above-mentioned specific implementation manner may be combined in any suitable manner under the circumstance that there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not described in the present disclosure.

In addition, the various embodiments of the present disclosure can also be arbitrarily combined, as long as they do not violate the spirit of the present disclosure, they should also be regarded as the contents disclosed in the present disclosure.

Claims

A camera module, comprising:

camera(10);

a mounting seat (20), the camera head (10) is mounted on the mounting seat (20);

a light-transmitting protective cover (30), sleeved on the outer side of the camera head (10), and movably arranged on the mounting seat (20);

A driving mechanism (40) is located inside the light-transmitting protective cover (30) and used to drive the light-transmitting protective cover (30) to vibrate relative to the camera (10) and the mounting seat (20).
The camera module according to claim 1, wherein the driving mechanism (40) is an electromagnetic driving mechanism, and the electromagnetic driving mechanism comprises an electromagnetic excitation member (420) for changing the magnetic properties by inputting an excitation current, and a connection with the electromagnetic excitation member (420) a magnetic member (410) that is magnetically matched, one of the electromagnetic excitation member (420) and the magnetic member (410) is disposed on the mounting seat (20), and the other is disposed on the mounting seat (20) on the light-transmitting protective cover (30).
The camera module according to claim 2, wherein the magnetic poles of the magnetic member (410) are located at both ends of the magnetic member (410) relative to the axial direction of the mounting seat (20), so that the electromagnetic excitation member can (420) When the magnetism is changed, the light-transmitting protective cover (30) is caused to vibrate back and forth along the axial direction of the mounting seat (20).
The camera module according to claim 2 or 3, wherein the magnetic member (410) comprises a permanent magnet (411), the electromagnetic excitation member (420) comprises an excitation coil (421), and the permanent magnet (411) ) and the excitation coil (421), one of which is fixed on the inner wall of the light-transmitting shield (30), and the other is arranged on the mounting seat (20). The permanent magnet (411) and all The excitation coils (421) are relatively spaced apart, and lead wires (422) are electrically connected to the excitation coils (421), and the lead wires (422) are used to pass through the light-transmitting protective cover (30) to connect to an excitation power source.
The camera module according to claim 4, wherein the permanent magnet (411) is formed in a ring shape and is sleeved on the outer wall of the mounting seat (20) in the axial direction, and has magnetic poles at both ends in the axial direction , the drive mechanism (40) further comprises an I-shaped bobbin (430), and the I-shaped bobbin (430) includes a winding tube portion (431) and a winding tube portion (431) located at both ends of the winding tube portion (431). A stopper plate (432), the stopper plate (432) is fixed on the inner wall of the light-transmitting protective cover (30), and the excitation coil (421) is spirally wound around the winding pipe portion (431) in the circumferential direction ).
The camera module according to claim 1, wherein the light-transmitting protective cover (30) is movably connected to the mounting seat (20) through an elastic member (50), and is connected to the mounting seat (20). A cavity (C) is formed between ), and the driving mechanism (40) is accommodated in the cavity (C).
The camera module according to claim 6, wherein the elastic member (50) is an elastic diaphragm (510), the elastic diaphragm (510) is configured as a ring-shaped sheet, and the elastic diaphragm (510) The inner edge of the elastic film (510) is fixedly connected to the outer wall of the mounting seat (20), and the outer edge of the elastic membrane (510) is fixedly connected to the inner wall of the light-transmitting protective cover (30).
The camera module according to claim 7, wherein there are multiple elastic diaphragms (510), which are respectively arranged at intervals along the axial direction of the light-transmitting protective cover (30).
The camera module according to claim 1, wherein the light-transmitting protective cover (30) is formed with a cavity (C) for accommodating the driving mechanism (40), and both ends of the cavity (C) are provided with There are a first wall (320) and a second wall (330) connected with the mounting seat (20), and a first chute (T1) extending in the axial direction is opened on the outer peripheral wall of the mounting seat (20). and a second chute (T2), the first wall (320) is slidably sleeved in the first chute (T1), and the second wall (330) is slidably sleeved in the first chute (T1) In the second chute (T2), a plurality of springs (520) are further arranged between the light-transmitting protective cover (30) and the mounting seat (20), and a plurality of the springs (520) are respectively arranged on the The first chute (T1) and the second chute (T2) are used to provide elastic force for the first wall (320) and the second wall (330).
An unmanned vehicle, wherein the unmanned vehicle comprises the camera module (1) according to any one of claims 1-9.