Camera device with brake assembly

Abstract

The application provides a camera device, comprising: a first shell; a ring dynamic top box and a ring dynamic inner shell, the ring dynamic top box is fixedly connected to the first shell, and the ring dynamic inner shell is rotatably arranged in the ring dynamic top box through a bearing extending along a first axis; a first camera assembly and a second camera assembly, the first camera assembly and the second camera assembly are carried on the ring dynamic inner shell; a brake pad assembly and a brake disc assembly, the brake pad assembly is arranged on the ring dynamic inner shell, and the brake disc assembly is fixed to the top end of the bearing; the ring dynamic inner shell can be horizontally rotated to a specified azimuth angle relative to the ring dynamic top box around the first axis under the driving of a driving assembly, so as to drive the second camera assembly to be horizontally rotated to the specified azimuth angle relative to the first shell; and a brake assembly is configured: the brake pad assembly moves along the direction of the first axis under the driving of a brake motor, so that the ring dynamic inner shell and the second camera assembly can be kept at the specified azimuth angle under the action force generated in the extension direction of the brake disc assembly.

Description

Technical Field

[0001] This invention relates to the field of camera device technology, and in particular to a camera device with a braking component. Background Technology

[0002] In electronic devices with rotating components, gear backlash can cause a small angular offset of the rotating component around its stop position. However, when the electronic device is used in precision applications, such as in a camera device with a circumferential component, this small angular offset can cause a significant deviation in the angle or position of the image. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a camera device with a braking component. A braking device is added to the rotating component, which can keep the rotating component in a designated position when the rotating component stops rotating, and can also prevent the camera component mounted on the rotating component from falling off accidentally.

[0004] In one embodiment, a camera device is provided, comprising:

[0005] A first housing for mounting the camera device to a surface, the first housing defining a first axis extending in a longitudinal direction;

[0006] A circumferential assembly, the circumferential assembly having a circumferential top box and a circumferential inner shell, the circumferential top box being fixedly connected to a first housing, and the circumferential inner shell being rotatably mounted inside the circumferential top box via a bearing extending along the first axis, the bearing being fixedly connected to the circumferential top box;

[0007] A first camera assembly and a second camera assembly are mounted on the annular inner shell;

[0008] Braking assembly, the braking assembly comprising:

[0009] Brake pad assembly and brake disc assembly, wherein the brake pad assembly is mounted on the circumferential inner housing to rotate relative to the circumferential top box together with the circumferential inner housing, and the brake disc assembly is fixed to the top of the bearing;

[0010] The inner shell can rotate horizontally around the first axis relative to the outer shell to a specified azimuth angle under the drive of the drive assembly, thereby driving the second camera assembly to rotate horizontally relative to the first shell to a specified azimuth angle.

[0011] The braking assembly is configured such that the brake pad assembly moves along the first axis direction under the drive of the brake motor to abut against the brake disc assembly, the force generated by the abutment against the brake disc assembly in the extending direction causes the circumferential inner shell and the second camera assembly to be held at the specified azimuth angle, and the limiting action formed by the abutment against the first axis direction causes the circumferential inner shell to be held inside the circumferential top box.

[0012] In one embodiment, the bearing is fixed to the center of the circumferential top box and protrudes from the top surface of the circumferential top box, and the center of the circumferential inner shell is fixedly connected to the rotating part of the bearing to rotatably support the circumferential top box.

[0013] The bearing has a bearing end cap at its top, and the circumferential inner shell is axially confined between the bearing end cap and the top surface of the circumferential top box.

[0014] The brake disc assembly is fixed to the bearing end cap.

[0015] In one embodiment, the driving component includes:

[0016] A drive motor is fixed to the annular inner shell and offset from the first axis;

[0017] Synchronizing pulley, which is coaxially fixed to the bearing end cover;

[0018] A timing belt is connected between the output shaft of the drive motor and the timing pulley, so as to drive the circumferential inner shell to rotate horizontally relative to the circumferential top box to the specified azimuth angle via the drive motor.

[0019] In one embodiment, the synchronizing pulley is located axially between the bearing end cap and the brake disc assembly.

[0020] The timing pulley and brake disc assembly are axially fixed to the bearing end cover by fasteners that simultaneously pass through the timing pulley and brake disc assembly.

[0021] In one embodiment, the brake pad assembly includes:

[0022] A brake motor, which is fixed to the annular inner shell and offset from the first axis;

[0023] A lever assembly, the end of which is connected to a brake pad, to drive the brake pad to move along the first axis direction under the drive of the brake motor, so as to change the distance between the brake pad and the brake disc assembly, so that the brake pad moves away from or abuts against the upper surface of the brake disc assembly;

[0024] The brake motor is configured to drive the lever assembly along the first axis direction.

[0025] In one embodiment, the lever component includes:

[0026] A lever support, which is fixed to the annular inner shell and offset from the first axis;

[0027] A first lever, the middle of which is supported by the lever bracket, a first end of which is driven by the brake motor to move along the first axis, and a brake pad is mounted on the second end of the first lever;

[0028] A cam, which is driven to rotate by the brake motor, and the first end of the lever assembly is longitudinally supported on the outer edge of the cam;

[0029] The brake motor has a brake output shaft extending radially along the bearing, which drives the first lever to move along the first axis direction via the elliptical movement trajectory of the cam in the longitudinal direction.

[0030] In one embodiment, the first lever has:

[0031] The first position where the brake pad is spaced apart from the brake disc assembly and the extension direction of the first lever is parallel to the brake disc assembly; and

[0032] The brake pad abuts against the brake disc assembly, and the first lever forms an acute angle with the brake disc assembly at a second position;

[0033] Wherein, corresponding to the second position, the abutment holds the circumferential inner shell and the second camera assembly at the specified azimuth angle; corresponding to the first position, the circumferential inner shell and the second camera assembly can be horizontally rotated relative to the circumferential top box to the specified azimuth angle around the first axis under the drive of the drive assembly.

[0034] In one embodiment, the first position is corresponding to the short axis direction of the cam being tangent to the first lever;

[0035] The second position is corresponding to the major axis direction of the cam being tangent to the first lever.

[0036] In one embodiment, the lever support includes:

[0037] A first limit switch, the first limit switch corresponding to a first position of the first lever;

[0038] The second limit switch corresponds to the second position of the first lever;

[0039] The brake motor stops or starts in response to the sensing signal from the first limit switch or the second limit switch.

[0040] In one embodiment, the lever support includes:

[0041] The third limiting part is located on the side of the lever bracket opposite to the brake disc assembly. The third limiting part corresponds to the second position of the first lever to limit the first end of the first lever.

[0042] In one embodiment, the lever support includes:

[0043] A fourth limiting part is located on the side of the lever bracket facing the brake disc assembly. The fourth limiting part corresponds to the second position of the first lever to limit the second end of the first lever.

[0044] In one embodiment, the second end of the first lever forms a pair of lever branches, which extend outward from the second end of the first lever along the radial direction of the bearing, and each lever branch is fixedly connected to a brake pad at its end.

[0045] The pair of brake pads are symmetrically distributed about the brake disc assembly.

[0046] In one embodiment, the brake pad has a first brake surface and a second brake surface;

[0047] Wherein, corresponding to the first position, the first brake surface is parallel and spaced apart from the brake disc assembly, and the second brake surface forms an upward tilt angle with the first brake surface;

[0048] Corresponding to the second position, the second brake surface rubs against the brake disc assembly.

[0049] In one embodiment, the brake motor is mounted on the annular inner housing via a motor sheet metal, and the motor sheet metal is arranged side by side with the lever bracket.

[0050] According to the above technical solution, this embodiment provides a braking component 30 in the circular motion assembly. In response to the input braking signal or the stop signal of the drive component 24, the brake pad assembly 31, which is integrated with the circular inner shell 22, is driven by the brake motor 33 to abut against the brake disc assembly 32, which is integrated with the circular top box 21. This abutment generates forces in two directions. The forces generated by the abutment in the extension direction of the brake disc assembly 32 or the rotation direction of the brake pad assembly 32 keep the circular inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the first housing 10. The abutment in the first axis L direction creates a limit on the brake pad assembly 31 and the brake disc assembly 32, so that the circular inner shell 22, which is integrated with the brake pad assembly 31, is kept inside the circular top box 21, thereby preventing the second camera assembly 12 mounted on the circular inner shell 22 from accidentally falling off. Attached Figure Description

[0051] The following figures are for illustrative purposes only and do not limit the scope of the invention.

[0052] Figure 1 This is an exploded view of the camera device of the present invention.

[0053] Figure 2 This is a schematic diagram of the structure of the first embodiment of the circumferential component in the camera device of the present invention.

[0054] Figure 3 yes Figure 2 A breakdown diagram is shown in the image.

[0055] Figure 4 yes Figure 2 A schematic diagram of local decomposition in the image.

[0056] Figure 5 This is a schematic diagram of the braking component in the camera device of the present invention.

[0057] Figure 6 yes Figure 5 A schematic diagram of local decomposition in the image.

[0058] Figure 7 yes Figure 5 A partially exploded diagram of the brake motor.

[0059] Figure 8 yes Figure 5 An exploded view of the braking components.

[0060] Figure 9a and Figure 9b This is a schematic diagram of the braking state of the braking component in the camera device of the present invention.

[0061] Figure 10a and Figure 10b This is a schematic diagram of the braking state of the braking component in the camera device of the present invention. Detailed Implementation

[0062] To provide a clearer understanding of the technical features, objectives, and effects of the invention, specific embodiments of the invention are now described with reference to the accompanying drawings, in which the same reference numerals denote the same parts.

[0063] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0064] To keep the drawings concise, only the parts relevant to the invention are shown in each figure, and do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of the components with the same structure or function is shown schematically, or only one is labeled.

[0065] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0066] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0067] In this document, terms such as "equal" and "same" are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use. Unless otherwise stated, numerical ranges in this document include not only the entire range within its two endpoints, but also several subranges contained therein.

[0068] The exemplary embodiments will now be described more fully with reference to the accompanying drawings.

[0069] To address the problems in the prior art, the present invention provides a camera device with a braking component, which adds a disc brake to the rotating component. This disc brake can keep the rotating component in a designated position when it stops rotating, and can also prevent the camera component mounted on the rotating component from accidentally falling off.

[0070] Figure 1 This is an exploded view of the camera device of the present invention. Figure 2 This is a schematic diagram of the structure of the first embodiment of the circumferential component in the camera device of the present invention. Figure 3 yes Figure 2 A diagram showing the breakdown of the data. (See attached diagram.) Figures 1 to 3 As shown, one embodiment of the present invention provides a camera device, including:

[0071] A first housing 10 is used to mount a camera device to a surface, and the first housing 10 defines a first axis L extending in a longitudinal direction;

[0072] The circumferential assembly 20 has a circumferential top box 21 and a circumferential inner shell 22. The circumferential top box 21 is fixedly connected to the first housing 10, and the circumferential inner shell 22 is rotatably mounted inside the circumferential top box 21 by means of a bearing 23 extending along the first axis L. The bearing 23 is fixedly connected to the circumferential top box 21.

[0073] A first camera assembly 11 and a second camera assembly 12 are mounted on the circular inner shell 22.

[0074] Braking assembly 30, the braking assembly 30 includes:

[0075] Brake pad assembly 31 and brake disc assembly 32, the brake pad assembly 31 is mounted on the inner ring housing 22 so as to rotate relative to the top ring housing 21 together with the inner ring housing 22, and the brake disc assembly 32 is fixed to the top of the bearing 23;

[0076] The inner ring shell 22 can rotate horizontally relative to the ring top box 21 around the first axis L to a specified azimuth angle under the drive of the drive component 24, so as to drive the second camera component 12 to rotate horizontally relative to the first shell 10 to a specified azimuth angle.

[0077] The braking assembly 30 is configured such that the brake pad assembly 31 moves along the first axis L direction under the drive of the brake motor 33 so as to abut against the brake disc assembly 32. The force generated by abutting against the brake disc assembly 32 in the extending direction keeps the circumferential inner shell 22 and the second camera assembly 12 at a specified azimuth angle. The limit formed by abutting against the first axis L direction keeps the circumferential inner shell 22 inside the circumferential top box 21.

[0078] In this embodiment, the camera device can be implemented as a PTZ camera with a rotating bolt. The first housing 10 serves as the main body for mounting the PTZ camera and the bolt, and is fixed to a carrier, typically defined as a fixing element. The rotating assembly 20 is mounted on the first housing 10, and has a fixed portion—a rotating top box 21—fixed to the first housing 10, and a rotating inner housing 22 that rotates horizontally relative to the rotating top box 21. The second camera assembly 12 is implemented as a bolt mounted on the rotating inner housing 22, which rotates horizontally relative to the rotating top box 21 and the first housing 10 to a specified azimuth angle along with the rotating inner housing 22, and can also rotate in pitch relative to the rotating inner housing 22. Further, the first camera assembly 11 can be implemented as a PTZ camera mounted on the rotating portion. The first camera assembly 11 can be hung on the rotating inner housing 22 via a bracket 11a. The bracket 11a has a horizontal adjustment mechanism. Before installing the first camera component 11, the position of the circumferential component 20 is first adjusted, and then the position of the first camera component 11 relative to the circumferential inner shell 22 is adjusted.

[0079] The inner ring housing 22 is rotatably mounted inside the top ring box 21 via a bearing 23. The bearing 23 has a fixed part and a rotating part that rotates axially relative to the fixed part. The inner ring housing 22 is fixedly connected to the rotating part, while the fixed part of the bearing 23 is fixedly connected to the first housing 10, thereby enabling the inner ring housing 22 to be rotatably mounted in the top ring box 21. A sunshade 13 can be installed on the outside of the ring assembly 20, and the sunshade 13 rotates synchronously with the inner ring housing 22 of the ring assembly 20.

[0080] The circumferential inner shell 22, driven by the drive assembly 24, can rotate horizontally relative to the circumferential top box 21 around the first axis L to a specified azimuth angle, thereby causing the second camera assembly 12 to rotate horizontally relative to the first camera assembly 11 to the specified azimuth angle. When the circumferential inner shell 22 rotates to the specified azimuth angle, the drive assembly 24 stops rotating to stop the circumferential inner shell 22 at the specified azimuth angle position. However, due to the presence of transmission backlash, the circumferential inner shell 22 will wobble at the specified azimuth angle position within a range of the backlash angle, thus affecting the imaging effect.

[0081] In this embodiment, a braking component 30 is provided in the circumferential assembly. In response to an input braking signal or a stop signal from the drive component 24, the brake pad assembly 31, which is integrally connected to the circumferential inner shell 22, is driven by the brake motor 33 to abut against the brake disc assembly 32, which is integrally connected to the circumferential top box 21. This abutment generates forces in two directions. The forces generated by the abutment in the extension direction of the brake disc assembly 32 or the rotation direction of the brake pad assembly 32 keep the circumferential inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the first housing 10. The abutment in the direction of the first axis L creates a limiting effect on the brake pad assembly 31 and the brake disc assembly 32, so that the circumferential inner shell 22, which is integrally connected to the brake pad assembly 31, is kept inside the circumferential top box 21, thereby preventing the second camera assembly 12 mounted on the circumferential inner shell 22 from accidentally falling off.

[0082] Among them, such as Figures 2 to 4 As shown, the bearing 23 is fixed to the center of the circumferential top box 21 and protrudes from the top surface of the circumferential top box 21. The center of the circumferential inner shell 22 is fixedly connected to the rotating part of the bearing 23 so as to rotatably support the circumferential top box 21.

[0083] The bearing 23 has a bearing end cap 231 at its top, and the circumferential inner shell 22 is axially confined between the bearing end cap 231 and the top surface of the circumferential top box 21.

[0084] The brake disc assembly 32 is fixed to the bearing end cap 231.

[0085] The driving component 24 includes:

[0086] Drive motor 241 is fixed to the annular inner shell 22 and is offset from the first axis L;

[0087] Synchronous pulley 242 is coaxially fixed to bearing end cover 231;

[0088] Synchronous belt 243 is connected between the output shaft of drive motor 241 and synchronous pulley 242, so as to drive the inner shell 22 to rotate horizontally relative to the top box 21 to a specified azimuth angle via drive motor 241.

[0089] In this embodiment, unlike the traditional synchronous belt drive structure, the synchronous pulley 242 is fixedly connected to the fixed component—bearing 23, meaning the synchronous pulley 242 is fixed and does not rotate. The drive motor 241 is mounted on a rotatable component—an annular inner shell 22—and is offset from the first axis L. Therefore, the working mode of the drive assembly 24 in this embodiment is as follows: when the drive motor 241 outputs rotational driving force, the synchronous belt 243 causes the drive motor 241 to rotate around the synchronous pulley 242, thereby driving the annular inner shell 22, which is fixedly connected to it, to rotate around the bearing 23. The synchronous belt 243 is fitted onto the synchronous pulley 242 in a manner similar to a hula hoop, but it does not drive the synchronous pulley 242 to rotate.

[0090] The synchronous pulley 242 is located axially between the bearing end cover 231 and the brake disc assembly 32.

[0091] The timing pulley 242 and the brake disc assembly 32 are axially fixed to the bearing end cover 231 by fasteners that pass through both the timing pulley 242 and the brake disc assembly 32.

[0092] Combination Figure 2 , Figure 5 and Figure 6 As shown, the brake pad assembly 31 includes:

[0093] Brake motor 33 is fixed to the annular inner shell 22 and is offset from the first axis L;

[0094] Lever assembly 35, the end of lever assembly 35 is connected to brake pad 34, so as to drive brake pad 34 to move along the first axis L direction under the drive of brake motor 33, so as to change the distance between brake pad 34 and brake disc assembly 32, so that brake pad 34 moves away from or abuts the upper surface of brake disc assembly 32.

[0095] The brake motor 33 is configured to drive the lever assembly 35 along the first axis L.

[0096] In this embodiment, the brake motor 33 in the brake pad assembly 31 is offset from the central axis of the bearing 23, and the brake pad and lever assembly 35 are disposed above the bearing 23. Thus, the braking assembly is integrally disposed within the circumferential assembly 20 and utilizes the spare space of the circumferential assembly 20. This does not affect the driving structure of the circumferential assembly 20, allowing the circumferential inner shell 22 to rotate horizontally relative to the circumferential top box 21 to a specified azimuth angle under the drive of the drive assembly 24, thereby driving the second camera assembly 12 to rotate horizontally relative to the first camera assembly 11 to a specified azimuth angle. Furthermore, after the drive assembly 24 drives the circumferential inner shell 22 to the specified azimuth angle, the braking assembly can hold the circumferential inner shell 22 and the second camera assembly 12 mounted thereon at that specified azimuth angle to avoid positional deviation due to transmission backlash.

[0097] Because the rotating top box is relatively stationary, the brake disc assembly and the timing pulley are also relatively stationary. The braking assembly and the drive assembly are fixed to the rotating inner shell with screws; the drive assembly and the timing pulley are driven by gears (or timing belts). Therefore, when the drive motor starts, the braking assembly rotates together with the rotating inner shell. When the braking assembly is activated, the brake pad assembly and the brake disc assembly work together to achieve the braking effect.

[0098] Among them, such as Figure 5 and Figure 6 As shown, the lever assembly 35 includes:

[0099] Lever bracket 353 is fixed to the annular inner shell 22 and is offset from the first axis L;

[0100] The first lever 351 is supported in the middle by the lever bracket 353. The first end of the first lever 351 is driven by the brake motor 33 to move along the first axis L. The brake pad 34 is installed at the second end of the first lever 351.

[0101] Cam 355 is driven to rotate by brake motor 33, and the first end of the first lever 351 is longitudinally supported on the outer edge of cam 355.

[0102] The brake motor 33 has a brake output shaft 331 extending radially along the bearing 23, which drives the first lever 351 to move along the first axis L via the elliptical movement trajectory of the cam 355 in the longitudinal direction.

[0103] like Figure 5 and Figure 6As shown, the brake output shaft 331 of the brake motor 33 extends horizontally, parallel to the radial direction of the bearing 23 and the extending direction of the brake disc assembly 32. The cam 355 is directly driven to rotate by the brake output shaft 331, forming an elliptical movement trajectory along its outer edge in the longitudinal direction. The cam 355 is located below the first end of the first lever 351, thereby driving the first end of the first lever 351 along the first axis L through its elliptical movement trajectory.

[0104] Since the middle part of the first lever 351 is supported by the lever bracket 353, the second end of the first lever 351 can be moved in the opposite direction by driving its first end along the first axis L. That is, when the first end of the first lever 351 is driven upward, the second end of the first lever 351 is driven downward.

[0105] Optionally, the middle portion of the first lever 351 can also be connected to the lever bracket 353 via a return spring to facilitate the reset and position holding of the first lever 351, thereby reducing the driving force requirement on the brake motor 33. The spring force generated by the return spring can be controlled within the required range by selecting the spring constant and extension distance. For example, the spring constant k of the return spring can be selected as 2.73 N / mm, and the elastic deformation range as 2.8 mm, to generate a spring force of 7.6 N.

[0106] Among them, combined Figures 9a to 10b As shown, the first lever 351 has:

[0107] The first position where the brake pad 34 is spaced apart from the brake disc assembly 32 and the extension direction of the first lever 351 is parallel to the brake disc assembly 32 (e.g., Figure 9a and Figure 10a (as shown); and

[0108] The brake pad 34 abuts against the brake disc assembly 32, and the first lever 351 forms an acute angle with the brake disc assembly 32 at the second position (e.g.) Figure 9b and Figure 10b (as shown);

[0109] In the second position, the contact between the brake pad 34 and the brake disc assembly 32 keeps the circumferential inner shell 22 and the second camera assembly 12 at a specified azimuth angle; in the first position, the braking assembly 30 releases the brake, allowing the circumferential inner shell 22 and the second camera assembly 12 to rotate horizontally relative to the circumferential top box 21 around the first axis L to a specified azimuth angle under the drive of the driving assembly 24.

[0110] like Figure 9a and Figure 10aAs shown, at the first position of the first lever 351, the extension direction of the first lever 351 is parallel to the brake disc assembly 32 and located in the horizontal direction. At this time, the brake pad 34 is spaced apart from the brake disc assembly 32, and the braking assembly 30 does not produce a braking effect. The circumferential inner shell 22 and the second camera assembly 12 can be driven by the drive assembly 24 to rotate horizontally around the first axis L relative to the circumferential top box 21 to a specified azimuth angle.

[0111] Specifically, such as Figure 9a As shown, the first position corresponds to the short axis direction of cam 355 being tangent to the first lever 351. Specifically, for brake pad 34, the first position of the first lever 351 corresponds to the highest point of brake pad 34 in the longitudinal direction, that is, the lowest point of the first end of the first lever 351. For cam 355, the lowest point of its top is formed when its short axis direction extends in the longitudinal direction.

[0112] To save internal space in the circulator assembly 20, the gap between the brake pad 34 and the brake disc assembly 32 can be set to be as small as possible, for example, 1.5mm, as long as it can ensure that the brake pad 34 and the brake disc assembly 32 are not in contact.

[0113] like Figure 9b and Figure 10b As shown, in the second position of the first lever 351, the first lever 351 forms an acute angle with the brake disc assembly 32, the brake pad 34 abuts against the brake disc assembly 32, and the first lever 351 also applies downward pressure to the brake pad 34, thereby converting the contact force generated in the longitudinal direction into the friction force between the brake pad 34 and the brake disc assembly 32, so as to limit the relative position of the brake pad 34 and the brake disc assembly 32 in the extending direction of the brake disc assembly 32.

[0114] Specifically, such as Figure 9b As shown, when the long axis of the cam 355 is tangent to the first lever 351, it corresponds to the second position. Specifically, for the brake pad 34, the second position of the first lever 351 corresponds to the lowest point of the brake pad 34 in the longitudinal direction, that is, the position where it abuts against the brake disc assembly 32, which corresponds to the highest point of the first end of the first lever 351. For the cam 355, its highest point is formed when its long axis extends in the longitudinal direction.

[0115] In this embodiment, the start signal of the brake motor 33 can be set as the stop signal of the drive component 24, or it can be set as an externally sent start signal. Furthermore, the start or stop of the brake motor 33 can be controlled by combining the position determination of the first lever 351.

[0116] Specifically, such as Figure 5 and Figure 8 As shown, the lever support 353 includes:

[0117] The first limit switch 3531 corresponds to the first position of the first lever 351;

[0118] The second limit switch 3532 corresponds to the second position of the first lever 351;

[0119] The brake motor 33 stops or starts in response to the sensing signal of the first limit switch 3531 or the second limit switch 3532.

[0120] The first limit switch 3531 and the second limit switch 3532 are used to detect the current position of the first lever 351, thereby determining whether the brake motor 33 and the drive assembly 24 can switch states. Therefore, their detection signals can be used as protection switch signals for the brake motor 33 or the drive assembly 24.

[0121] For example, when the drive assembly 24 is started, the first lever 351 must be in the first position. If the second limit switch 3532 detects that the first lever 351 is in the second position, the brake motor 33 needs to be started first to switch the first lever 351 from the second position to the first position. The drive assembly 24 can only be started after the first limit switch 3531 detects that the first lever 351 is in the first position.

[0122] Similarly, when the drive assembly 24 stops, the brake motor 33 needs to be activated to switch the first lever 351 from the first position to the second position. Once the second limit switch 3532 detects that the first lever 351 is in the second position, the brake motor 33 can be deactivated to hold the first lever 351 in the second position. Optionally, the brake motor 33 can also be continuously activated to continuously apply downward longitudinal pressure to the brake disc assembly 32 via the brake pads 34.

[0123] Optionally, the lever support 353 includes:

[0124] The third limiting part 3533 is located on the side of the lever bracket 353 away from the brake disc assembly 32. The third limiting part 3533 corresponds to the second position of the first lever 351 to limit the first end of the first lever 351.

[0125] Alternatively, lever support 353 includes:

[0126] The fourth limiting part 3534 is located on the side of the lever bracket 353 facing the brake disc assembly 32. The fourth limiting part 3534 corresponds to the second position of the first lever 351 to limit the second end of the first lever 351.

[0127] The third limiting part 3533 and the fourth limiting part 3534 can be implemented as mechanical protection switches to limit the first lever 351 between its first position and second position, so as to limit the range of movement of the first lever 351.

[0128] like Figure 10a and Figure 10b As shown, corresponding to the movement of the first lever 351 between its first and second positions, the brake pad 34 forms a certain angular offset. In order to form better contact with the brake disc assembly 32, the brake pad 34 has a first brake surface 341 and a second brake surface 342. In the first position, the first brake surface 341 is parallel and spaced apart from the brake disc assembly 32, and the second brake surface 342 forms an upward angle with the first brake surface 341. In the second position, the second brake surface 342 frictionally abuts against the brake disc assembly 32.

[0129] The brake pad 34 is made of an elastic material that can deform to a certain extent when in contact with the brake disc assembly 32. For example, corresponding to the second position, the interference between the brake pad 34 and the brake disc assembly 32 can be set to 10% of its thickness. In a specific example, the thickness of the brake pad 34 is 8 mm, then the interference is 0.8 mm.

[0130] Another function of the return spring is to control the contact force between the brake pads and the brake disc assembly. When the first lever 351 is in the second position, the cam 355 and the brake disc assembly 32 exert an upward longitudinal support force on the first lever 351, while the return spring, located between the support point of the first lever 351 and the first end of the first lever 351, applies a downward return force to the first lever 351. Thus, the support force of the brake disc assembly 32 on the brake pads 34 can be controlled by selecting the performance of the return spring.

[0131] For example, the spring constant k of the return spring is chosen to be 2.73 N / mm, corresponding to the second position of the first lever, and its elastic deformation range is 5.3 mm to form a spring force of 14.46 N.

[0132] To increase the contact force between the brake disc assembly 32 and the brake pads 34, such as Figure 6 and Figure 8 As shown, the second end of the first lever 351 forms a pair of lever branches 352. The lever branches 352 extend outward from the second end of the first lever 351 along the radial direction of the bearing 23. Each lever branch 352 is fixedly connected to a brake pad 34 at its end. The pair of brake pads 34 are symmetrically distributed about the center of the brake disc assembly 32.

[0133] The brake pads 34 are symmetrically distributed about the center of the brake disc assembly 32, which can generate uniform braking force in both directions of rotation.

[0134] Furthermore, combined Figure 5 and Figure 6 As shown, the brake motor 33 is mounted on the annular inner shell 22 via the motor sheet metal 332, and the motor sheet metal 332 and the lever bracket 353 are arranged side by side.

[0135] According to the above technical solution, this embodiment provides a braking component 30 in the circular motion assembly. In response to the input braking signal or the stop signal of the drive component 24, the brake pad assembly 31, which is integrated with the circular inner shell 22, is driven by the brake motor 33 to abut against the brake disc assembly 32, which is integrated with the circular top box 21. This abutment generates forces in two directions. The forces generated by the abutment in the extension direction of the brake disc assembly 32 or the rotation direction of the brake pad assembly 32 keep the circular inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the first housing 10. The abutment in the first axis L direction creates a limit on the brake pad assembly 31 and the brake disc assembly 32, so that the circular inner shell 22, which is integrated with the brake pad assembly 31, is kept inside the circular top box 21, thereby preventing the second camera assembly 12 mounted on the circular inner shell 22 from accidentally falling off.

[0136] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent implementation schemes or modifications made without departing from the spirit of the present invention, such as combinations, divisions or repetitions of features, should be included within the scope of protection of the present invention.

Claims

1. An image pickup device, characterized by comprising: The application relates to a camera device, comprising: a first shell (10) for mounting the camera device to a surface, the first shell (10) defining a first axis (L) extending in a longitudinal direction; a ring dynamic assembly (20) having a ring dynamic top box (21) fixedly connected to the first shell (10) and a ring dynamic inner shell (22) rotatably arranged in the ring dynamic top box (21) through a bearing (23) extending along the first axis (L), the bearing (23) being fixedly connected to the ring dynamic top box (21); a first camera assembly (11) and a second camera assembly (12) carried on the ring dynamic inner shell (22); a brake assembly (30) comprising: a brake pad assembly (31) arranged on the ring dynamic inner shell (22) to rotate together with the ring dynamic inner shell (22) relative to the ring dynamic top box (21), and a brake disc assembly (32) fixed to a top end of the bearing (23); wherein the ring dynamic inner shell (22) can be driven by a driving assembly (24) to rotate horizontally relative to the ring dynamic top box (21) around the first axis (L) to a specified azimuth angle, so as to drive the second camera assembly (12) to rotate horizontally relative to the first shell (10) to the specified azimuth angle; the brake assembly (30) is configured to drive the brake pad assembly (31) to move along the first axis (L) direction to abut against the brake disc assembly (32), the abutment generates a force in the extension direction of the brake disc assembly (32) to keep the ring dynamic inner shell (22) and the second camera assembly (12) at the specified azimuth angle, and the abutment forms a limit in the first axis (L) direction to keep the ring dynamic inner shell (22) in the ring dynamic top box (21).

2. The camera of claim 1, wherein the bearing (23) is fixed to the center of the ring dynamic top box (21) and protrudes from the top surface of the ring dynamic top box (21), the center of the ring dynamic inner shell (22) is fixedly connected to the rotating part of the bearing (23) to be rotatably supported on the ring dynamic top box (21); the top end of the bearing (23) has a bearing end cover (231), and the ring dynamic inner shell (22) is axially limited between the bearing end cover (231) and the top surface of the ring dynamic top box (21); the brake disc assembly (32) is fixed to the bearing end cover (231).

3. The camera of claim 2, wherein the driving assembly (24) comprises: a driving motor (241) fixed to the ring dynamic inner shell (22) and deviated from the first axis (L); a synchronous wheel (242) coaxially fixed to the bearing end cover (231). A synchronous belt (243) is connected between the output shaft of the driving motor (241) and the synchronous wheel (242) to drive the ring-shaped inner casing (22) to rotate horizontally relative to the ring-shaped top box (21) to the specified azimuth angle by the driving motor (241).

4. The camera of claim 3, wherein The synchronous wheel (242) is located between the bearing end cover (231) and the brake disc assembly (32) in the axial direction, The synchronous wheel (242) and the brake disc assembly (32) are axially fixed to the bearing end cover (231) by fasteners penetrating the synchronous wheel (242) and the brake disc assembly (32) at the same time.

5. The camera of claim 1, wherein The brake disc assembly (32) comprises: A brake motor (33) is fixed to the ring-shaped inner casing (22) and deviates from the first axis (L); A lever assembly (35) is connected at one end to the brake disc (34) to drive the brake disc (34) to move along the first axis (L) under the drive of the brake motor (33) to change the distance between the brake disc (34) and the brake disc assembly (32) so that the brake disc (34) is away from or abuts against the upper surface of the brake disc assembly (32); The brake motor (33) is configured to drive the lever assembly (35) along the first axis (L).

6. The camera of claim 5, wherein The lever assembly (35) comprises: A lever support (353) is fixed to the ring-shaped inner casing (22) and deviates from the first axis (L); A first lever (351) is supported at the middle part of the lever support (353), the first end of the first lever (351) is driven by the brake motor (33) to move along the first axis (L), and the brake disc (34) is arranged at the second end of the first lever (351); A cam (355) is driven to rotate by the brake motor (33), and the first end of the first lever (351) is longitudinally supported on the outer edge of the cam (355); The brake motor (33) has a brake output shaft (331) extending in the radial direction of the bearing (23) to drive the first lever (351) to move along the first axis (L) through the elliptical movement track of the cam (355) in the longitudinal direction.

7. The camera of claim 6, wherein The first lever (351) has: A first position where the brake disc (34) is spaced apart from the brake disc assembly (32) and the extension direction of the first lever (351) is parallel to the brake disc assembly (32); and A second position where the brake disc (34) abuts against the brake disc assembly (32) and the first lever (351) forms an acute angle with the brake disc assembly (32); Wherein, corresponding to the second position, the abutment holds the ring dynamic inner shell (22) and the second camera assembly (12) in the specified azimuth angle; corresponding to the first position, the ring dynamic inner shell (22) and the second camera assembly (12) can be horizontally rotated around the first axis (L) relative to the ring dynamic top box (21) to a specified azimuth angle under the driving of the driving assembly (24).

8. The camera of claim 7, wherein, The short axis direction of the cam (355) corresponds to the first position when tangent to the first lever (351); The long axis direction of the cam (355) corresponds to the second position when tangent to the first lever (351).

9. The camera of claim 7, wherein, The lever support (353) comprises: A first limit switch (3531) corresponding to the first position of the first lever (351); A second limit switch (3532) corresponding to the second position of the first lever (351); The brake motor (33) stops or starts in response to the sensing signal of the first limit switch (3531) or the second limit switch (3532).

10. The camera of claim 7, wherein, The lever support (353) comprises: A third limit portion (3533) located on the side of the lever support (353) away from the brake disc assembly (32), the third limit portion (3533) corresponding to the second position of the first lever (351) to limit the first end of the first lever (351).

11. The camera of claim 7, wherein, The lever support (353) comprises: A fourth limit portion (3534) located on the side of the lever support (353) facing the brake disc assembly (32), the fourth limit portion (3534) corresponding to the second position of the first lever (351) to limit the second end of the first lever (351).

12. The camera of claim 7, wherein, The second end of the first lever (351) forms a pair of lever branches (352) extending outward from the second end of the first lever (351) along the radial direction of the bearing (23), and the end of each lever branch (352) is fixedly connected with one of the brake pads (34). The pair of brake pads (34) are symmetrically distributed about the brake disc assembly (32).

13. The camera of claim 7, wherein, The brake pad (34) has a first brake surface (341) and a second brake surface (342); Wherein, corresponding to the first position, the first brake surface (341) is parallel and spaced apart from the brake disc assembly (32), and the second brake surface (342) forms an upward angle with the first brake surface (341); Corresponding to the second position, the second brake surface (342) frictionally abuts against the brake disc assembly (32).

14. The camera of claim 6, wherein, The brake motor (33) is installed in the ring dynamic inner shell (22) through a motor sheet metal (332), and the motor sheet metal (332) is arranged side by side with the lever support (353).

Images