Self-cleaning device for camera lens

Abstract

The utility model discloses a camera lens self-cleaning device, which comprises a camera main body, a lens is arranged at one end of the camera main body, a lens ring is arranged at the front part of the lens, a lens is arranged between the lens and the lens ring, the positions of the lens ring and the camera main body are relatively fixed, and the lens ring is contacted with the outer surface of the lens; the camera main body is connected with a lens driving mechanism for driving the lens to move relative to the lens ring through a bracket. According to the camera lens self-cleaning device provided by the utility model, the lens moves relative to the lens ring, and the lens ring is used for scraping foreign matters attached to the outer surface of the lens. And the normal work of the camera is not influenced while foreign matters such as rainwater and silt on the lens are removed. The camera can be widely applied to cameras of automobiles, motion camera shooting, site monitoring and the like.

Description

Technical Field

[0001] The utility model relates to the field of cameras, in particular to a camera lens self-cleaning device. Background Art

[0002] At present, cars are generally equipped with cameras outside the car (such as the rear of the car) to meet the needs of users. Cars will inevitably encounter harsh environments during driving, such as rainy days or muddy roads. Rainwater and mud stick to the lens of the camera, which will block the camera from shooting, causing the camera to not work properly and easily cause accidents.

[0003] In order to remove raindrops attached to the camera lens, some products currently use heating to make the rain on the lens evaporate as quickly as possible, but they are unable to effectively remove mud and sand on the lens, especially on rainy days when the road surface is more likely to splash mud and sand, resulting in unsatisfactory lens cleaning effects.

[0004] In addition to car cameras, outdoor sports cameras and surveillance cameras are also prone to having foreign objects such as rain or mud stuck to their lenses, and have the same usage difficulties as car cameras. Utility Model Content

[0005] The utility model aims to provide a camera lens self-cleaning device, which can quickly remove foreign matter such as rainwater, mud and sand on the lens.

[0006] To achieve the above-mentioned purpose, the utility model provides a camera lens self-cleaning device, including a camera body, a lens is provided at one end of the camera body, a lens ring is provided at the front of the lens, a lens is provided between the lens and the lens ring, the positions of the lens ring and the camera body are relatively fixed, and the lens ring is in contact with the outer surface of the lens; the camera body is connected to a lens driving mechanism through a bracket to drive the lens to move relative to the lens ring.

[0007] As a further improvement of the present invention, the camera body includes two slide grooves arranged opposite to each other, the two side edges of the lens are slidably matched with the slide grooves, and the lens driving mechanism drives the lens to move back and forth in a straight line.

[0008] As a further improvement of the present invention, the lens driving mechanism includes an eccentric wheel, a swing arm and a first driving device arranged on the camera body, the power shaft of the first driving device is linked to the eccentric wheel, one end of the eccentric wheel is hinged to one end of the swing arm, and the other end of the swing arm is hinged to the lens.

[0009] As a further improvement of the present invention, the outer surface of the lens is a plane, and the lens is connected to the camera body for relative rotation.

[0010] As a further improvement of the present invention, an annular protrusion is provided on the outer side of the lens of the camera body; the lens driving mechanism includes a second driving device, a driving gear and a driven gear ring that are linked in sequence, the middle part of the driven gear ring is hollowed out and the lens is installed thereon; the hollow middle part of the driven gear ring is rotatably connected to the annular protrusion of the camera body.

[0011] As a further improvement of the present invention, the outer surface of the lens is a spherical surface, the lens driving mechanism includes a third driving device, the power output end of the third driving device is linked to the lens, and the outer surface of the lens rotates relative to the lens ring.

[0012] As a further improvement of the present invention, the outer surface of the lens is an arc surface, the lens driving mechanism includes a fourth driving device, the power output end of the fourth driving device is movably connected to the lens, and the outer surface of the lens moves in an arc shape relative to the lens.

[0013] As a further improvement of the present invention, the lens ring is made of a wear-resistant and elastic soft rubber material, and the lens ring is in close contact with the lens.

[0014] As a further improvement of the utility model, the camera body is provided with an end cover adapted thereto, the end cover is provided with a through hole, and the lens ring is arranged on the through hole of the end cover.

[0015] Beneficial Effects

[0016] Compared with the prior art, the advantages of the camera lens self-cleaning device of the utility model are:

[0017] 1. When the lens is stained with rain or mud, the lens driving mechanism drives the lens to make a relative displacement movement relative to the lens ring, and the lens ring can be used to scrape off the rain or mud on the lens. Because the lens ring is always directly opposite to the lens of the camera body and fixed when the lens moves, the lens ring does not block the lens, allowing the camera to normally obtain images of the external environment, reducing the probability of accidents. Compared with the method of fixing the lens and using a wiper to scrape off rain and mud, this cleaning device not only has a good cleaning effect, but also ensures that the camera continues to obtain clear and complete images during the cleaning process. It can also improve safety when used in car cameras.

[0018] 2. There are sealing rings between the lens and the lens ring, and between the lens and the lens, which not only ensures that the rain and sand on the lens can be scraped off, but also prevents rain from entering the camera body and damaging the camera. In addition, the lens ring can also be made of wear-resistant and aging-resistant soft rubber material to play a waterproof and sealing role.

[0019] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a stereoscopic diagram of the camera lens self-cleaning device of Example 1;

[0022] Figure 2 The front view of the camera lens self-cleaning device of Example 1 without the end cover;

[0023] Figure 3 An exploded view of the camera lens self-cleaning device of Example 1;

[0024] Figure 4 It is a bottom sectional view of the camera lens self-cleaning device of Example 1;

[0025] Figure 5 It is a front view of the camera lens self-cleaning device of Example 2;

[0026] Figure 6 An exploded view of the camera lens self-cleaning device of Example 2;

[0027] Figure 7 It is a bottom sectional view of the camera lens self-cleaning device of Example 2;

[0028] Figure 8 An exploded view of the camera lens cleaning device of Example 3;

[0029] Fig. 9 is a bottom sectional view of the camera lens cleaning device of Example 3;

[0030] Fig.10 This is a top view cross-sectional view of the camera lens cleaning device of Example 4. DETAILED DESCRIPTION

[0031] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] Example 1

[0033] The specific implementation of the utility model is as follows Figures 1 to 4As shown, a camera lens cleaning device comprises a camera body 4, a lens 1 is provided at one end of the camera body 4, a lens ring 3 is provided at the front of the lens 1, a transparent lens 2 is provided between the lens 1 and the lens ring 3, the positions of the lens ring 3 and the camera body 4 are relatively fixed, and the lens ring 3 keeps contact with the outer surface of the lens 2. The camera body 4 is connected to a lens driving mechanism 5 for driving the lens 2 to move relative to the lens ring 3 through a bracket. The lens 1 and the lens ring 3 are always located on the same straight line. In this embodiment, the outer surface of the lens 2 is a plane.

[0034] The camera body 4 includes two slide grooves 41 arranged opposite to each other. The two side edges of the lens 2 are slidably matched with the slide grooves 41. The lens driving mechanism 5 drives the lens 2 to move back and forth in a straight line.

[0035] The lens driving mechanism 5 includes an eccentric wheel 52, a swing arm 53 and a first driving device 51 arranged on the camera body 4. The power shaft of the first driving device 51 is linked with the eccentric wheel 52. One end of the eccentric wheel 52 is hinged with one end of the swing arm 53, and the other end of the swing arm 53 is hinged with the lens 2. In this embodiment, the first driving device 51 is a motor and is installed in the camera body 4. The first driving device 51 drives the eccentric wheel 52 to rotate, and the lens 2 can be driven to move back and forth relative to the lens ring 3 through the swing arm 53. The lens ring 3 is used to scrape off the rainwater and mud and sand attached to the lens 2, and the lens ring 3 will not block the lens 1 during this process. Therefore, compared with the method of fixing the lens and scraping off the rainwater and mud and sand with a wiper, this method not only has a good cleaning effect, but also can ensure that the camera can continuously obtain a clear and complete picture during the cleaning process, and can also improve safety when used in a car camera.

[0036] The camera body 4 is provided with an end cover 8 which is buckled therewith. The end cover 8 is provided with a through hole. The lens ring 3 is arranged on the through hole of the end cover 8. Specifically, an annular groove is provided on the outer edge of the lens ring 3. The annular groove of the lens ring 3 is snap-fitted with the through hole of the end cover 8.

[0037] In this embodiment, the lens ring 3 is made of a wear-resistant and elastic soft rubber material, and the lens ring 3 is in close contact with the lens 2 and simultaneously plays the role of scraping away foreign matter on the outer surface of the lens 2 and sealing. In addition to this embodiment, the lens ring 3 can also be made of a hard material, and a sealing ring in contact with the lens 2 is provided on the lens ring 3.

[0038] The self-cleaning method of the camera lens is as follows: by allowing the lens 2 to move back and forth in a straight line relative to the rear end surface of the lens ring 3, the edge of the lens ring 3 is used to scrape off rainwater or mud and sand attached to the outer surface of the lens 2.

[0039] In addition to the above embodiments, the lens driving mechanism 5 using an electromagnet or a linear motor can also drive the lens 2 to move back and forth in a straight line relative to the lens ring 3.

[0040] Example 2

[0041] like Figures 5 to 7 As shown, the difference from Example 1 is that the lens 2 is connected to the camera body 4 for relative rotation, and the lens ring 3 is arranged eccentrically relative to the rotation axis of the lens 2. Specifically, the rotation axis of the lens 2 and the center line of the lens ring 3 are parallel and staggered. The outer surface of the lens 2 is a plane.

[0042] In this embodiment, an annular protrusion 43 is provided on the outer side of the lens 1 of the camera body 4. The lens driving mechanism 5 includes a second driving device 54, a driving gear 55 and a driven gear ring 56 which are linked in sequence. The driven gear ring 56 is hollowed out in the middle and is installed with the lens 2. The hollowed-out middle part of the driven gear ring 56 is rotatably sleeved with the annular protrusion 43 of the camera body 4. The driving gear 55 is meshed with the driven gear ring 56, wherein the diameter of the driven gear ring 56 is larger than that of the driving gear 55, which plays a role of increasing torque and reducing speed. The inner side of the hollowed-out middle part of the driven gear ring 56 is rotatably sleeved with the annular protrusion 43 of the camera body 4.

[0043] The second driving device 54 is a motor installed in the camera body 4, and its power output shaft is connected to the driving gear 55. When the second driving device 54 drives the driving gear 55 to rotate, the driving gear 55 can drive the lens 2 to rotate relative to the lens ring 3 through the driven gear ring 56, and the lens ring 3 is used to scrape off the rain and mud attached to the lens 2, and the lens ring 3 will not block the lens 1 during this process.

[0044] The lens ring 3 is made of hard material and is provided with a sealing ring in contact with the lens 2. In addition, a sealing ring may also be provided between the outer wall of the annular protrusion 43 and the inner wall of the hollow portion in the middle of the driven gear ring 56, which not only ensures that rainwater and mud on the lens 2 can be scraped off, but also prevents rainwater from entering the camera body and damaging the camera.

[0045] Example 3

[0046] like Figure 8 and Fig. 9 As shown, the difference from embodiment 1 and embodiment 2 is that the outer surface of the lens 2 is a spherical surface, which can be applied to a fisheye lens. The lens 2 rotates relative to the lens ring 3, wherein the rotation axis of the lens 2 and the center line of the lens ring 3 intersect, preferably perpendicular to each other.

[0047] The camera body 4 is provided with a spherical slide groove 42 adapted to the lens 2. The lens driving mechanism 5 includes a third driving device 57, which is a motor. The third driving device 57 is installed on the camera body 4, and its power output shaft is connected to one side of the lens 2. The spherical outer surface of the lens 2 contacts the rear end of the lens ring 3. When the power output shaft of the third driving device 57 drives the lens 2 to rotate, the lens 2 can be moved relative to the lens ring 3, so that the lens ring 3 can be used to scrape off foreign matter attached to the outer surface of the lens 2.

[0048] Example 4

[0049] like Fig.10 As shown, the difference from the embodiment 1 and the embodiment 2 is that the outer surface of the lens 2 is a curved surface, and the lens 2 moves in an arc shape relative to the lens ring 3. The lens ring 3 is provided with an arc groove 31, and the two side edges of the lens 2 slide with the arc groove 31. The lens driving mechanism 5 includes a fourth driving device 58, and the fourth driving device 58 is connected to the camera body 4 through a bracket.

[0050] The power output end of the fourth driving device 58 is movably connected to the lens 2. In this embodiment, a strip groove 581 is provided at the power output end of the fourth driving device 58, and the length direction of the strip groove 581 is perpendicular to the moving direction of the power output end. A sliding shaft 21 is provided at one end of the lens 2, and the sliding shaft 21 is slidably matched with the strip groove 581. When the power output end of the fourth driving device 58 moves back and forth in a straight line and drives the lens 2 to slide along the arc-shaped slide groove 31, the sliding shaft 21 slides on the strip groove 581 to prevent the problem of getting stuck.

[0051] In addition, when the power output end of the fourth driving device 58 is movably connected to the lens 2, the strip groove 581 may not be used. Instead, a connecting rod may be provided between the power output end of the fourth driving device 58 and the lens 2. The connecting rod and the lens 2, as well as the connecting rod and the power output end of the fourth driving device 58 are hinged. This can also achieve that when the power output end of the fourth driving device 58 makes a linear reciprocating movement, the lens 2 is driven to slide along the arc-shaped slide groove 31.

[0052] In addition to the above-mentioned embodiments using linear reciprocating movement and rotational movement, the lens 2 can also move in any other direction and any path relative to the lens ring 3 (for example, the path is elliptical, triangular, etc.). As long as the lens ring 3 can scrape off foreign matter on the surface of the lens 2, the corresponding self-cleaning function can be achieved.

[0053] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A camera lens self-cleaning device, comprising a camera body (4), one end of which is provided with a lens (1), characterized in that: A lens ring (3) is provided at the front of the lens (1), a lens (2) is provided between the lens (1) and the lens ring (3), the positions of the lens ring (3) and a camera body (4) are relatively fixed, and the lens ring (3) is in contact with the outer surface of the lens (2); the camera body (4) is connected to a lens driving mechanism (5) through a bracket for driving the lens (2) to move relative to the lens ring (3).

2. A camera lens self-cleaning device according to claim 1, characterized in that: The camera body (4) comprises a slide groove (41), the edge of the lens (2) is slidably matched with the slide groove (41), and the lens driving mechanism (5) drives the lens (2) to move back and forth in a straight line.

3. A camera lens self-cleaning device according to claim 2, characterized in that: The lens driving mechanism (5) comprises an eccentric wheel (52), a swing arm (53) and a first driving device (51) arranged on a camera body (4); a power shaft of the first driving device (51) is linked to the eccentric wheel (52); one end of the eccentric wheel (52) is hinged to one end of the swing arm (53); and the other end of the swing arm (53) is hinged to the lens (2).

4. A camera lens self-cleaning device according to claim 1, characterized in that: The outer surface of the lens (2) is a plane, and the lens (2) is connected to the camera body (4) in a relatively rotatable manner.

5. A camera lens self-cleaning device according to claim 4, characterized in that: The lens (1) of the camera body (4) is provided with an annular protrusion (43) on the outside; the lens driving mechanism (5) comprises a second driving device (54), a driving gear (55) and a driven gear ring (56) which are linked in sequence, and the middle of the driven gear ring (56) is hollowed out and the lens (2) is installed thereon; The hollowed-out portion in the middle of the driven gear ring (56) is rotatably sleeved with the annular raised portion (43) of the camera body (4).

6. A camera lens self-cleaning device according to claim 1, characterized in that: The outer surface of the lens (2) is a spherical surface. The lens driving mechanism (5) comprises a third driving device (57). The power output end of the third driving device (57) is linked to the lens (2). The outer surface of the lens (2) rotates relative to the lens ring (3).

7. A camera lens self-cleaning device according to claim 1, characterized in that: The outer surface of the lens (2) is an arc surface. The lens driving mechanism (5) comprises a fourth driving device (58). The power output end of the fourth driving device (58) is movably connected to the lens (2). The outer surface of the lens (2) moves in an arc relative to the lens ring (3).

8. A camera lens self-cleaning device according to claim 1 or 2 or 4 or 6 or 7, characterized in that: The lens ring (3) is made of a wear-resistant and elastic soft rubber material. The lens ring (3) is in close contact with the lens (2) and simultaneously serves to scrape away foreign matter on the outer surface of the lens (2) and to seal.

Images