Camera

Abstract

Provided in the present application is a camera, comprising: a body, a bracket, a camera assembly and a roller assembly. The bracket is assembled below the body and can rotate relative to the body in the circumferential direction of the body. The camera assembly is assembled on the bracket and comprises a lens. The roller assembly comprises an elastic piece and rollers assembled on the elastic piece. The elastic piece is assembled on one of the body and the bracket, and when the bracket rotates relative to the body, the rollers abut against and come into contact with the other one of the body and the bracket. The rollers serve a supporting function, maintain stability between the bracket and the body, improve the rigidity and vibration resistance of the camera, and can reduce shaking caused by environmental vibrations to the lens, thereby ensuring the image quality.

Description

Camera

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 2, 2024, with application number 202410159603.X and invention name “Camera”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of video surveillance technology, and in particular to cameras. Background Art

[0003] The existing camera is fixed to the bracket, and the bracket is fixed on the rod. The vibration of the environment is transmitted to the camera through the rod, causing the camera lens to shake, resulting in image shaking, blurring, out-of-focus and other problems on the screen, affecting the image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0005] FIG1 is a schematic diagram of a camera according to an embodiment of the present application;

[0006] FIG2 is an exploded view of the camera shown in FIG1 ;

[0007] FIG3 is a schematic diagram of the bracket of the camera shown in FIG2 ;

[0008] FIG4 is an enlarged view of the circled portion at point A of the bracket shown in FIG3 ;

[0009] FIG5 is a schematic cross-sectional view of the camera shown in FIG1 ;

[0010] FIG6 is an enlarged view of the circled portion at point B of the cross-sectional schematic diagram shown in FIG5 ;

[0011] FIG7 is another schematic cross-sectional view of the camera shown in FIG1 ;

[0012] FIG8 is an enlarged view of the circled portion at point C of the cross-sectional schematic diagram shown in FIG5 ;

[0013] FIG9 is an enlarged view of the circled portion at point D of the cross-sectional schematic diagram shown in FIG5 ;

[0014] FIG10 is a schematic diagram of the mounting bracket of the camera shown in FIG2 ;

[0015] FIG11 is a schematic diagram of the mounting bracket shown in FIG10 from another perspective;

[0016] FIG12 is a diagram of the assembled body, bracket and camera assembly shown in FIG2 ;

[0017] FIG13 is another cross-sectional schematic diagram of the camera shown in FIG1 ;

[0018] FIG14 is an enlarged view of the circled portion at E of the cross-sectional schematic diagram shown in FIG13;

[0019] FIG15 is an exploded view of the camera assembly shown in FIG2 ;

[0020] FIG16 is a schematic diagram of a lens assembly of the camera assembly shown in FIG15 ;

[0021] FIG17 is a cross-sectional schematic diagram of the camera assembly shown in FIG2 ;

[0022] FIG18 is a schematic diagram of the assembled bracket and camera assembly shown in FIG2 ;

[0023] FIG19 is a front view of the schematic diagram shown in FIG18;

[0024] FIG20 is a partial enlarged view of FIG7 . DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of this application more clearly understood, the present application is further described below with reference to the accompanying drawings and examples. It is apparent that the described examples are only a portion of the embodiments of this application, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the examples in this application are intended to fall within the scope of protection of this application.

[0026] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices consistent with certain aspects of the present application as detailed in the appended claims.

[0027] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "plurality" or "several" mean two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar words are for convenience only and are not intended to limit to a single position or spatial orientation. The terms "include," "comprising," and similar words mean that the elements or objects preceding the term "include" or "comprising" include the elements or objects listed after the term and their equivalents, and do not exclude other elements or objects. The terms "connected," "connected," and similar words are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0028] 1 and 2 , the camera according to the embodiment of the present application includes a body 1 , a bracket 2 , a camera assembly 3 and a roller assembly 4 .

[0029] The bracket 2 is assembled below the body 1 and can rotate relative to the body 1 along its circumferential direction to adjust the monitoring range of the camera. The camera assembly 3 is assembled on the bracket 2 and includes a lens 31.

[0030] In some embodiments, the camera includes an upper lens 11 disposed on the body 1 to increase the monitoring range. In some embodiments, the upper lens 11 adopts a rigid fixed structure. In some embodiments, the upper lens 11 adopts a fixed focus lens with good vibration resistance and is non-rotatable.

[0031] As shown in Figures 3 to 6, the roller assembly 4 includes an elastic sheet 41 and a roller 42 assembled on the elastic sheet 41. The elastic sheet 41 is assembled on the bracket 2. When the bracket 2 rotates relative to the body 1, the roller 42 is in close contact with the body 1, so that the roller 42 supports the body 1. At this time, the roller 42 plays a supporting role, maintaining the stability between the bracket 2 and the body 1, and improving the rigidity and vibration resistance of the camera. In addition, when the body vibrates, the elastic sheet can absorb the vibration energy of the body vibration to be transmitted to the bracket through elastic deformation, so that the vibration energy is transmitted to the camera lens as little as possible, thereby reducing the shaking of the lens 31 caused by environmental vibration and ensuring the quality of the monitoring image.

[0032] When the bracket 2 rotates relative to the body 1 , the roller 42 is driven to rotate.

[0033] In some embodiments, the elastic sheet 41 can also be assembled on the fuselage 1. At this time, the roller 42 is in close contact with the bracket 2. When the bracket 2 rotates relative to the fuselage 1, the roller 42 is in close contact with the bracket 2. When the bracket 2 rotates relative to the fuselage 1, the roller 42 is driven to rotate.

[0034] In some embodiments, after the bracket 2 is assembled on the camera body 1, the elastic sheet 41 is elastically deformed by the counterforce of the roller 42, allowing the roller 42 to provide better rigid support and avoid permanent deformation after compression. The elastic deformation of the elastic sheet 41 caused by the counterforce of the roller 42 allows it to absorb the vibration energy generated by the vibration of the camera body 1 that is intended to be transmitted to the bracket 2 when the camera body vibrates, minimizing the amount of vibration energy transmitted to the camera lens. This reduces lens shake caused by environmental vibration and ensures image quality. The counterforce is the force perpendicular to the elastic sheet 41 applied by the roller 42 after it is pressed against the elastic sheet 41.

[0035] In some embodiments, the elastic sheet 41 is made of metal, such as stainless steel, to provide better elastic deformation performance. In other words, the metal making up the elastic sheet 41 should have a certain degree of rigidity and elasticity, so as to provide better elastic deformation performance and avoid permanent deformation of the elastic sheet 41.

[0036] In other embodiments, the roller 42 may also be made of a material with certain elasticity and rigidity. In this way, not only can the elastic sheet 41 absorb the vibration energy transmitted by the vibration of the body, but the roller 42 can also absorb part of the vibration energy transmitted by the vibration of the body 1, further reducing the shaking of the lens caused by environmental vibration and ensuring image quality.

[0037] In some embodiments, when the elastic sheet 41 is assembled on the bracket 2 , both ends of the elastic sheet 41 may be fixed on the body 1 or on the bracket 2 .

[0038] In some embodiments, when the elastic sheet 41 is assembled on the bracket 2, one end of the elastic sheet 41 can be fixed on the bracket 2, and the other end can be movably supported on the bracket 2. The roller 42 is located in the middle of the elastic sheet 41 and has better elastic support performance. Through the connection method in which one end of the elastic sheet 41 is fixedly supported, the other end is movably supported, and the middle part is suspended, when the roller 42 is located in the middle of the elastic sheet 41 and pressure is applied to the elastic sheet 41, the elastic sheet 41 will be deformed after being subjected to force. Since one end of the elastic sheet 41 that is movably supported can move, the elastic sheet 41 can have a greater elastic deformation, thereby better absorbing vibration energy. In addition, in the present application, since the elastic sheet 41 has good rigidity and elasticity, the roller assembly including the elastic sheet 41 and the roller 42 has better elastic support performance.

[0039] In some embodiments, when the elastic sheet 41 is assembled on the fuselage 1 , one end of the elastic sheet 41 may be fixed on the fuselage 1 , and the other end may be movably supported on the fuselage 1 .

[0040] Movable support means that the other end of the elastic piece 41 can move relative to the bracket 2 or the body 1 .

[0041] In some embodiments, the elastic sheet 41 includes a base 411 and a first retaining wall 412 and a second retaining wall 413 extending from opposite ends of the base 411. One end of the base 411 is fixed to the bracket 2, and the other end is movably supported on the bracket 2. The roller 42 is connected to the first retaining wall 412 and the second retaining wall 413 via an axis. It will be understood that the end of the base 411 fixed to the bracket 2 and the other end movably supported on the bracket 2 are different from the ends extending from the first retaining wall 412 and the second retaining wall 413. The first retaining wall 412 and the second retaining wall 413 are respectively perpendicular to the base 411, and the first retaining wall 412 and the second retaining wall 413 are parallel.

[0042] The elastic sheet 41 includes a base 411 , a first retaining wall 412 , and a second retaining wall 413 . The first retaining wall 412 and the second retaining wall 413 are directly connected to the base 411 , and are located at opposite sides of the base 411 .

[0043] In some embodiments, the roller 42 is a bearing structure, and the outer ring of the roller 42 is rollingly connected to the shaft through the bearing to ensure smooth rolling of the roller 42.

[0044] In some embodiments, one end of the base 411 may be fixed to the fuselage 1 , and the other end may be movably supported on the fuselage 1 .

[0045] In some embodiments, the base 411 is provided with a first hole 414 and a second hole 415 at both ends, respectively. The bracket 2 is provided with a fixing post 21 and a limiting post 22. The end of the limiting post 22 is assembled into the first hole 414. The end of the base 411 provided with the first hole 414 can move up and down relative to the limiting post 22. The camera is fixed to the fixing post 21 by a screw 23 passing through the second hole 415, thereby securing the elastic sheet 41.

[0046] The diameter of the limiting post 22 is smaller than the diameter of the first hole 414, so that the end of the limiting post 22 can be assembled into the first hole 414. In addition, the fixing post 21 is provided with a hole adapted for the screw 23, or the fixing post 21 can be drilled by the screw 23. In this way, the screw 23 passes through the second hole 415 of the elastic sheet 41 and is threadedly connected to the fixing post 21, thereby fixing the elastic sheet 41 to the fixing post 21. In this way, the elastic sheet 41 can be fixed and a certain amount of space can be provided for the elastic sheet 41 when it is deformed under force.

[0047] In some embodiments, one side of the bracket 2 where the fixing column 21 and the limiting column 22 are set, and the area surrounded by the fixing column 21, the limiting column 22 and the elastic sheet 41 is a hollow area. In this way, the elastic sheet 41 can have a larger elastic deformation space, and further enable the roller assembly 4 to absorb more vibration energy transmitted by the vibration of the body, further reduce the shaking of the lens caused by environmental vibration, and ensure image quality.

[0048] 3 , 5 , and 7 to 9 , the camera includes a horizontal motor 5 to drive the bracket 2 to rotate relative to the body 1 .

[0049] In some embodiments, the horizontal motor 5 is fixed to the bracket 2. The motor shaft of the horizontal motor 5 is parallel to the rotation axis of the bracket 2.

[0050] In some embodiments, as shown in FIG20 , the horizontal motor 5 is provided with a first gear 51, and the body 1 is provided with a second gear 12. The first gear 51 engages with the second gear 12, so that the horizontal motor 5 drives the bracket 2 to rotate relative to the body 1. Alternatively, the horizontal motor 5 may be fixed to the body 1, and correspondingly, the second gear 12 is provided on the bracket 2.

[0051] It can be understood that the first gear 51 can be fixedly mounted on the motor shaft of the horizontal motor 5, and the first gear 51 can also be a part of the motor shaft of the horizontal motor 5, that is, the first gear 51 and the motor shaft can also be integrally formed.

[0052] In some embodiments, the horizontal motor 5 may also drive the bracket 2 to rotate relative to the body 1 via a synchronous belt. This application does not limit the transmission method of the horizontal motor 5.

[0053] The camera includes a deep groove ball bearing 6. The deep groove ball bearing 6 includes an inner ring 61, an outer ring 62, and balls 63. The outer ring 62 is located outside the inner ring 61, and the balls 63 are located between the inner ring 61 and the outer ring 62.

[0054] The body 1 includes a first fixing portion 13, and the bracket 2 includes a second fixing portion 24. The first fixing portion 13 is fixed to the outer ring 62, and the second fixing portion 24 is fixed to the inner ring 61. Since there is a ball 63 between the outer ring 62 and the inner ring 61, and the ball 63 can greatly reduce the friction between the components, the smoothness of the rotation of the bracket 2 relative to the body 1 can be increased.

[0055] In some embodiments, the first fixing portion 13 may be fixed to the inner ring 61 , and correspondingly, the second fixing portion 24 may be fixed to the outer ring 62 .

[0056] The roller assemblies 4 are provided in a plurality and are arranged around the deep groove ball bearing 6. When the bracket 2 rotates relative to the body 1, the deep groove ball bearing 6 rotates synchronously with the roller 42. The present application provides four roller assemblies 4, and the present application does not limit the number of the roller assemblies 4.

[0057] By setting up multiple roller assemblies 4, when the body 1 vibrates, the elastic sheets 41 on each roller assembly 4 can undergo elastic deformation, thereby absorbing more vibration energy transmitted by the vibration of the body 1. In addition, the elastic sheets 41 on each roller assembly 4 can undergo elastic deformation more evenly, thereby making the bracket 2 more stable and reducing the shaking of the bracket 2.

[0058] In some embodiments, the plurality of roller assemblies 4 may be evenly arranged around the deep groove ball bearing 6 .

[0059] The deep groove ball bearing 6 acts as a hinge during vibration and impact, and the roller assembly 4 plays a supporting role to maintain the stability between the bracket 2 and the fuselage 1. The rigidity of the roller 42 plays a decisive role in the rigidity of the bracket 2.

[0060] The deep groove ball bearing 6 is not limited to a bearing type and can be a cylindrical bearing, a double-row angular contact bearing, a double-row deep groove ball bearing, a sliding sleeve, etc. It is understood that the deep groove ball bearing 6 can be replaced by a cylindrical bearing, a double-row angular contact bearing, a sliding sleeve, etc. The specific type of bearing is not limited here.

[0061] In the camera's architecture, the center of gravity of the bracket 2 and the camera assembly 3 is typically positioned downward, while the deep groove ball bearing 6 is positioned upward, for example, above the camera assembly 3. When vibration occurs, the bracket 2 and the camera assembly 3, due to inertia, vibrate in various forms and directions relative to the deep groove ball bearing 6 within a small space. Due to the hinge function of the deep groove ball bearing 6, the vibration can be decomposed into vertical and horizontal directions, as well as a circumferential direction along the deep groove ball bearing 6. The deflection of the center of gravity of the bracket 2 and the camera assembly 3 relative to the deep groove ball bearing 6 has a significant impact on the lens 31 and the image. In this application, this deflection is suppressed by the vertical rigidity of the roller 42. The camera's vibration amplitude in the vertical and circumferential directions is small, and this small vibration can be reduced or eliminated by the inherent resistance of the deep groove ball bearing 6, the friction of the roller 42, or the self-locking force of the horizontal motor 5, thereby providing a camera with excellent vibration resistance.

[0062] As shown in Figures 10 and 11, the camera includes a mounting bracket 7, and the camera body 1 is fixed to the mounting bracket 7. The mounting bracket 7 can be fixed upwardly to a base (not shown), or the mounting bracket 7 can be fixed to a wall via an adapter bracket (not shown) to achieve the installation and fixation of the camera. In some embodiments, the mounting bracket 7 and the base are fastened with bolts to facilitate assembly and disassembly. A rubber pad 71 is provided between the mounting bracket 7 and the base to ensure a stable connection between the mounting bracket 7 and the base, and prevent it from loosening under vibration, especially high-frequency excitation.

[0063] The rubber pad 71 can be made of soft materials such as silicone or rubber.

[0064] The mounting frame 7 includes a top plate 72 and a counterweight 73 located below the top plate 72. In some embodiments, the mounting frame 7 includes a pair of wings 74 extending outward from opposite sides of the top plate 72. The rubber pads 71 ​​are provided as a pair, each secured to the upper surface of the pair of wings 74.

[0065] In some embodiments, the pair of wings 74 are respectively fastened to the base by bolts.

[0066] The wing portion 74 defines a cavity 740. A grid of cross-shaped reinforcement ribs 741 is disposed within the cavity 740. The reinforcement ribs 741 are connected to the top plate 72. Bolt holes 743 for bolts to pass through are provided on the reinforcement ribs 741 and the rubber pad 71, respectively.

[0067] In some embodiments, the counterweight portion 73 includes a first side plate 731 and a second side plate 732 and a third side plate 733 extending from both ends of the first side plate 731. The first side plate 731 encloses a circular cavity 7310. The top plate portion 72 is provided with an opening 721 and a recessed groove 722. The recessed groove 722 is located above the cavity 7310, and the opening 721 is located above the space enclosed by the second side plate 732 and the third side plate 733. The two ends of the first side plate 731 are located below both sides of the opening 721 of the top plate portion 72. The second side plate 732 and the third side plate 733 extend in a direction away from the first side plate 731.

[0068] As shown in Figures 1 and 2, the body 1 includes a circular first stopper 14, a second stopper 15 extending upward from the first stopper 14, and a head 16 extending forward from the first stopper 14. The upper lens 11 is disposed within the head 16, which has a window 161 for exposing the upper lens 11. The first fixing portion 13 extends downward from the first stopper 14.

[0069] After the fuselage 1 is assembled with the mounting frame 7 , part of the head 16 is located between the second side panel 732 and the third side panel 733 , part of the head 16 is located in the opening 721 , the first limiting portion 14 is located in the cavity 7310 , and the second limiting portion 15 is located in the recessed groove 722 .

[0070] In some embodiments, the head portion 16 is in an inverted trapezoidal shape, and the window 161 is recessed from the inclined front side 162 thereof; the second limiting portion 15 and the recessed groove 722 are square.

[0071] 1 and 5 , at least a portion of the fuselage 1 is located in a space defined by the top plate 72 and the counterweight 73. The counterweight 73 increases the weight of the mounting bracket 7.

[0072] In some embodiments, the mounting bracket 7 has a large counterweight to distribute most of the vibration energy; and / or the weight of the bracket 2 is greater than or equal to 2 times the weight of the camera assembly 3 and less than or equal to 3 times the weight of the camera assembly 3; and / or the ratio of the weight of the camera assembly 3 to the weight of the camera is greater than or equal to 10% and less than or equal to 15%; and / or the ratio of the weight of the lens 31 to the weight of the camera is greater than or equal to 4% and less than or equal to 5%, which can effectively reduce the vibration of the lens 31 and improve the life of the lens 31.

[0073] In some embodiments, the mounting bracket 7 weighs 1670g, the body 1 weighs 860g, the bracket 2 weighs 1400g, the camera assembly 3 weighs 600g, and the lens 31 weighs 200g, for a total weight of 4530g. The camera assembly 3 accounts for 13.2% of the total weight of the camera, and the lens 31 accounts for 4.4% of the total weight. Ideally, 4.4% of the vibration energy is distributed to the lens 31, improving vibration resistance, effectively reducing vibration of the lens 31, and extending its lifespan.

[0074] 12 to 14 , the camera includes a first rubber sleeve 8 located between the body 1 and the mounting bracket 7 , which absorbs part of the vibration energy transmitted to the body 1 while ensuring a rigid connection, thereby increasing anti-vibration performance.

[0075] In some embodiments, the first rubber sleeve 8 is made of viscoelastic material.

[0076] A plurality of the first rubber sleeves 8 are provided and are located between the first limiting portion 14 and the top plate portion 72 ; the plurality of first rubber sleeves 8 are all located outside the second limiting portion 15 .

[0077] 2 and 13 to 14 , the body 1 includes a positioning post 17 , and the first rubber sleeve 8 is fixed on the positioning post 17 . In some embodiments, the first rubber sleeve 8 is sleeved and fixed on the positioning post 17 .

[0078] In some embodiments, the positioning post 17 is formed by extending upward from the first limiting portion 14 and is provided in plurality.

[0079] The positioning post 17 defines a first mounting hole 171, and the top plate 72 defines a second mounting hole 723. The camera further includes a positioning member (not shown). The positioning member passes through the second mounting hole 723, is assembled into the first mounting hole 171, and is secured to the positioning post 17, thereby securing the camera body 1 to the mounting bracket 7.

[0080] As shown in Figures 1 and 3, the bracket 2 includes an assembly portion 25 and a first support portion 26 and a second support portion 27 extending from the assembly portion 25. The camera assembly 3 is located within the space enclosed by the assembly portion 25, the first support portion 26, and the second support portion 27 and is rotatable relative to the first support portion 26 and the second support portion 27 to adjust the monitoring range of the camera assembly 3. The assembly portion 25 extends away from the roller assembly 4 to form the first support portion 26 and the second support portion 27.

[0081] The camera assembly 3 can move up and down and pitch relative to the bracket 2.

[0082] In some embodiments, the roller 42 is fixed on the upper surface of the assembly part 25; the horizontal motor 5 is located in the space enclosed by the assembly part 25, and the first gear 51 is exposed on the upper surface of the assembly part 25; the second fixing part 24 is arranged on the assembly part 25.

[0083] As shown in Figure 7 , a vertical motor 9 is installed within the bracket 2 to drive the rotation of the camera assembly 3. In some embodiments, the vertical motor 9 is installed within the assembly portion 25 and can drive the camera assembly 3 to rotate via a synchronous belt to meet vertical precision requirements. This application does not limit the transmission method of the vertical motor 9. The motor shaft of the vertical motor 9 is perpendicular to the rotation axis of the bracket 2.

[0084] 15 to 17 , the camera assembly 3 includes a housing 32 , a lens assembly 33 and a second rubber sleeve 34 located in a space enclosed by the housing 32 .

[0085] The housing 32 has opposing ends axially connected to the first support portion 26 and the second support portion 27, respectively. The housing 32 includes a main body 321 positioned between the first support portion 26 and the second support portion 27, and a first shaft portion 322 and a second shaft portion 323 extending from opposing ends of the main body 321. As shown in FIG3 , the first support portion 26 has a first shaft hole 261, and the second support portion 27 has a second shaft hole (not shown). The first shaft portion 322 is rotatably assembled within the first shaft hole 261, and the second shaft portion 323 is rotatably assembled within the second shaft hole. The first shaft portion 322 and the second shaft portion 323 each extend away from the main body 321.

[0086] Bearings may be provided in the first shaft hole 261 and the second shaft hole, and the first shaft portion 322 and the second shaft portion 323 are connected to the bearings to ensure smooth rotation.

[0087] As shown in Figures 13 and 15 to 17, the lens assembly 33 includes the lens 31 and a sheet metal member 35 fixed to the lens 31. The sheet metal member 35 is fixed to the housing 32 and, optionally, to the main body 321. The arrangement of the sheet metal member 35 ensures that the eccentric inertia of the camera assembly 3 relative to the T-axis is smaller than the impact inertia, thus reducing the rotational inertia of the camera assembly 3 relative to the T-axis and improving the response speed of the vertical motor 9.

[0088] The second rubber sleeve 34 is located between the sheet metal part 35 and the housing 32, and partially absorbs the vibration energy of the camera assembly 3, thereby reducing the energy ultimately transferred to the lens, achieving a vibration reduction effect, and increasing the life of the lens.

[0089] A plurality of the second rubber sleeves 34 may be provided along the circumferential direction of the lens 31 , and the present application does not limit the number of the second rubber sleeves 34 .

[0090] In some embodiments, the second rubber sleeve 34 is made of viscoelastic material.

[0091] In some embodiments, opposite ends of the second rubber sleeve 34 respectively abut against the sheet metal component 35 and the housing 32 .

[0092] In some embodiments, a plurality of second rubber sleeves 34 may be stacked together and placed between the sheet metal component 35 and the housing 32 .

[0093] In some embodiments, the sheet metal member 35 is secured to the housing 32 via a fastener, such as a bolt. The second rubber sleeve 34 is provided with a hole for the fastener or the column to pass through. The column can be disposed on the sheet metal member 35 or the housing 32 to be secured to the fastener.

[0094] In some embodiments, the sheet metal component 35 covers at least three circumferential sides of the lens 31 to improve rigidity and enhance vibration resistance.

[0095] In some embodiments, the housing 32 includes a shell 324 and a cover plate 325. The lens assembly 33 is located within the space enclosed by the shell 324 and the cover plate 325. The shell 324 is frame-shaped, and the main body 321, the first shaft 322, and the second shaft 323 are disposed within the shell 324. The cover plate 325 and the shell 324 can be secured by bolts. The frame is a hexahedral structure with an opening on one side and a hollow interior.

[0096] As shown in Figures 18 and 19, the distance between the central axis of the lens 31 and the top of the deep groove ball bearing 6 is defined as H1, and the overall height of the camera is defined as H2. H1 is greater than or equal to two-thirds and less than or equal to three-quarters of H2 to ensure that the roller assembly 4 is subjected to appropriate pressure to enhance vibration resistance. The overall height H2 of the camera is the distance between the top of the deep groove ball bearing 6 and the plane of the lowest end of the housing (the side of the housing away from the deep groove ball bearing).

[0097] The center of the lens 31 is close to the center of gravity of the camera assembly 3 .

[0098] The direction from the first support portion 26 to the second support portion 27 is defined as a first direction X. The width of the bracket 2 along the first direction is defined as D1. The width of the main body 321 along the first direction is defined as D2. D1 is greater than or equal to 1.8 times D2 and less than or equal to 2 times D2. The camera assembly 3 has a small moment of inertia and the bracket 2 has good rigidity, thereby enhancing vibration resistance. The first direction is the direction from the first support portion 26 to the second support portion 27.

[0099] In some embodiments, the upper lens 11 can also rotate, and the anti-vibration performance can be improved by using an anti-vibration structure similar to that of the lens 31, for example, a sheet metal part and a second rubber sleeve.

[0100] The physical principle of the camera's anti-vibration in this application is that "the natural frequency of the system is 5 to 10 times the excitation frequency", which falls into the category of passive vibration reduction.

[0101] When the base's excitation frequency is greater than or equal to 2 Hz and less than or equal to 20 Hz, the system does not resonate. The camera and the base vibrate at the same frequency. Because the camera is an elastic body, its amplitude increases slightly. In this case, the vibration energy transmitted to the camera is limited, and the amplitude is limited. The vibration energy is sequentially transmitted through the mounting bracket 7 to the camera body 1, from the camera body 1 to the bracket 2, and then from the bracket 2 to the camera assembly 3, and finally to the lens 31. The vibration energy is distributed according to the weight of each component of the camera, with a small amount of energy dissipated in the second rubber sleeve 34 to achieve good vibration resistance.

[0102] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with this profession can make some changes or modifications to the equivalent embodiment of the above-disclosed technical content without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present application that does not depart from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A camera, characterized in that: include: fuselage (1); A bracket (2) is assembled below the fuselage (1) and is rotatable relative to the fuselage (1) along its circumferential direction; A camera assembly (3) assembled on the bracket (2) and comprising a lens (31); The roller assembly (4) comprises an elastic sheet (41) and a roller (42) assembled on the elastic sheet (41); the elastic sheet (41) is assembled on one of the body (1) and the bracket (2); when the bracket (2) rotates relative to the body (1), the roller (42) is in close contact with the other of the body (1) and the bracket (2).

2. The camera according to claim 1, wherein After the bracket (2) is assembled on the body (1), the elastic sheet (41) is elastically deformed by the push force of the roller (42).

3. The camera according to claim 2, wherein: The two ends of the elastic sheet (41) are fixed on one of the body (1) and the bracket (2), and the roller (42) is located in the middle of the elastic sheet (41).

4. The camera according to claim 3, characterized in that The elastic sheet (41) includes a base (411) and a first retaining wall (412) and a second retaining wall (413) extending from opposite ends of the base (411); one end of the base (411) is fixed to one of the body (1) and the bracket (2); and the roller (42) is connected to the first retaining wall (412) and the second retaining wall (413) via an axis.

5. The camera according to any one of claims 1 to 4, characterized in that: The camera includes a deep groove ball bearing (6), the deep groove ball bearing (6) includes an inner ring (61), an outer ring (62) and a ball (63), the outer ring (62) is located outside the inner ring (61), and the ball (63) is located between the inner ring (61) and the outer ring (62), the body (1) includes a first fixing portion (13), and the bracket (2) includes a second fixing portion (24), the first fixing portion (13) is fixed to one of the inner ring (61) and the outer ring (62), and the second fixing portion (24) is fixed to the other of the inner ring (61) and the outer ring (62).

6. The camera according to claim 5, characterized in that The camera comprises a plurality of roller assemblies (4) arranged around the deep groove ball bearing (6); when the bracket (2) rotates relative to the body (1), the deep groove ball bearing (6) and the roller (42) rotate synchronously.

7. The camera according to claim 5, characterized in that The distance between the central axis of the lens (31) and the top of the deep groove ball bearing (6) is H1, the total height of the camera is H2, and H1 is greater than or equal to 2 / 3 of H2 and less than or equal to 3 / 4 of H2.

8. The camera according to any one of claims 1 to 7, characterized in that: The camera comprises a mounting frame (7), the body (1) is fixed to the mounting frame (7), and the camera comprises a first rubber sleeve (8) located between the body (1) and the mounting frame (7).

9. The camera according to claim 8, characterized in that The mounting frame (7) includes a top plate portion (72) and a counterweight portion (73) located below the top plate portion (72); at least a portion of the body (1) is located in a space enclosed by the top plate portion (72) and the counterweight portion (73); the ratio of the weight of the camera assembly (3) to the weight of the camera is greater than or equal to 10% and less than or equal to 15%; and the ratio of the weight of the lens (31) to the weight of the camera is greater than or equal to 4% and less than or equal to 5%.

10. The camera according to any one of claims 1 to 9, characterized in that The camera assembly (3) comprises a housing (32), a lens assembly (33) and a second rubber sleeve (34) located in a space enclosed by the housing (32); the lens assembly (33) comprises the lens (31) and a sheet metal component (35) fixed to the lens (31); the sheet metal component (35) is fixed to the housing (32); and the second rubber sleeve (34) is located between the sheet metal component (35) and the housing (32).

11. The camera according to claim 10, wherein: The bracket (2) includes a first support portion (26) and a second support portion (27); opposite ends of the shell (32) are respectively connected to the first support portion (26) and the second support portion (27) through an axis; the shell (32) includes a main body (321) located between the first support portion (26) and the second support portion (27); the direction from the first support portion (26) to the second support portion (27) is defined as a first direction; the width of the bracket (2) along the first direction is defined as D1; the width of the main body (321) along the first direction is defined as D2; and D1 is greater than or equal to 1.8 times D2 and less than or equal to 2 times D2.

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