Camera device with brake assembly

Abstract

The present invention provides a camera device, comprising: a top cover assembly, which defines a first axis extending along a longitudinal direction; a ring-moving assembly, comprising a ring-moving top box and a ring-moving inner shell, the ring-moving top box is fixedly connected to the top cover assembly, and the ring-moving inner shell is rotatably mounted in the ring-moving top box through a bearing extending along the first axis; a first camera assembly and a second camera assembly are mounted on the ring-moving inner shell; a brake assembly, comprising: a brake assembly and a brake disc assembly, the brake assembly is mounted on the ring-moving inner shell to rotate relative to the ring-moving top box together with the ring-moving inner shell, and the brake disc assembly is fixed to the top end of the bearing; the ring-moving inner shell rotates horizontally to a specified azimuth angle relative to the ring-moving top box under the drive of the first drive assembly; the brake assembly is configured as follows: the brake assembly moves along the radial direction of the bearing under the drive of the brake motor so as to be able to directly clamp the brake disc assembly, so that the ring-moving inner shell and the second camera assembly are maintained at the specified azimuth angle.

Description

Technical Field

[0001] The present invention relates to the technical field of camera devices, and in particular to a camera device with a braking assembly. Background Art

[0002] In electronic devices with rotating parts, gear transmission backlash can cause small angular deviations of the rotating parts around the stop position. However, when the electronic device is used in precision application scenarios, such as a camera device with a ring-shaped component, this small angular deviation may cause significant deviations in the angle or position of the image. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a camera device with a brake assembly, in which a clamp brake device is added to the ring-moving assembly, which can not only keep the ring-moving assembly in a specified position when the ring-moving assembly stops rotating, but also prevent the camera assembly mounted on the ring-moving assembly from accidentally falling off.

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

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

[0006] a ring-moving assembly comprising a ring-moving top box and a ring-moving inner shell, the ring-moving top box being fixedly connected to the top cover assembly, the ring-moving inner shell being rotatably mounted in the ring-moving top box via a bearing extending along the first axis, the bearing being fixedly connected to the ring-moving top box;

[0007] a first camera assembly and a second camera assembly, wherein the first camera assembly and the second camera assembly are mounted on the annular inner housing;

[0008] A brake assembly, comprising: a holding brake assembly and a brake disc assembly, wherein the holding brake assembly is mounted on the annular inner housing to rotate relative to the annular top box along with the annular inner housing, and the brake disc assembly is fixed to the top end of the bearing;

[0009] The ring-shaped inner shell can be driven by the driving assembly to rotate horizontally around the first axis relative to the ring-shaped top box to a specified azimuth angle, so as to drive the second camera assembly to rotate horizontally relative to the first camera assembly to a specified azimuth angle;

[0010] The brake assembly is configured as follows: the brake assembly moves along the radial direction of the bearing under the drive of the brake motor so as to directly clamp the brake disc assembly, the force generated by the clamping in the circumferential direction of the brake disc assembly enables the annular inner shell and the second camera assembly to remain at the specified azimuth angle, and the force generated by the clamping in the direction of the first axis enables the annular inner shell to be retained in the annular top box.

[0011] In one embodiment, the bearing is fixed to the center of the ring-shaped top box and protrudes from the top surface of the ring-shaped top box. The center of the ring-shaped inner shell is fixedly connected to the rotating portion of the bearing to be rotatably supported on the ring-shaped top box.

[0012] The top end of the bearing is provided with a bearing end cover, and the annular inner shell is axially limited between the bearing end cover and the top surface of the annular top box;

[0013] The brake disc assembly is fixed to the bearing end cover.

[0014] In one embodiment, the drive assembly comprises:

[0015] A drive motor is fixed to the annular inner shell and deviates from the first axis.

[0016] a synchronous wheel coaxially fixed to the bearing end cover;

[0017] A synchronous belt is connected between the output shaft of the driving motor and the synchronous wheel, so as to drive the ring-moving inner shell to rotate horizontally to the specified azimuth angle relative to the ring-moving top box through the driving motor.

[0018] In one embodiment, the synchronous wheel is located between the bearing end cover and the brake disc assembly in the axial direction.

[0019] The synchronous wheel and brake disc assembly are axially fixed to the bearing end cover by fasteners that penetrate the synchronous wheel and brake disc assembly at the same time.

[0020] In one embodiment, the brake disc assembly includes a brake disc and a brake pad, wherein the brake disc is axially fixed to the bearing end cover, and the brake pad covers the brake disc from the top to provide a friction surface extending along the peripheral wall;

[0021] The brake disc has a limiting portion protruding radially outward.

[0022] In one embodiment, the brake assembly includes:

[0023] Brake motor;

[0024] A pair of hoops, the hoops are cross-connected at the center and supported on the annular inner shell through a first central axis, and the first end of each hoops has an arc-shaped arm adapted to the periphery of the brake disc assembly;

[0025] a connecting rod assembly connected to the second end of each clamp to drive the second ends of the pair of clamps to move toward or away from each other under the drive of the brake motor, thereby driving the pair of arc-shaped arms to move away from or toward each other, so that the arc-shaped arms are away from or abut against the periphery of the brake disc assembly;

[0026] The brake motor is configured to drive the connecting rod assembly along a radial direction of the bearing.

[0027] In one embodiment, the connecting rod assembly comprises:

[0028] a first connecting rod and a second connecting rod, wherein one end of the first connecting rod and the second connecting rod are hinged to the second central axis, and the other end of the first connecting rod and the second end of the pair of clamps are hinged respectively;

[0029] a pull rod, driven by the brake motor, pulling the first connecting rod or the second connecting rod to move, so that the angle between the first connecting rod and the second connecting rod changes, so that the second ends of the pair of clamps move toward or away from each other;

[0030] The brake motor has a brake output shaft extending along the first axis direction, and the brake output shaft is connected to the pull rod through a cam, so that the pull rod is driven by the elliptical moving trajectory of the cam in the horizontal direction to pull the first connecting rod or the second connecting rod to move along the radial direction of the bearing.

[0031] In one embodiment, when the first connecting rod and the second connecting rod form a straight line, the pair of arc-shaped arms hold the brake disc assembly tightly.

[0032] The pull rod moves along a direction perpendicular to the straight line under the drive of the brake motor, so as to lock the pair of arc-shaped arms at a position of holding the brake disc assembly when the brake motor does not output driving force.

[0033] In one embodiment, the first central shaft is fixedly connected to the annular inner shell;

[0034] The second central shaft is movably limited to the annular inner housing along the radial direction of the bearing;

[0035] Wherein, the first central axis and the second central axis are located in the same radial direction of the bearing.

[0036] In one embodiment, it includes:

[0037] a first position-limiting fixed sheet metal, wherein the first position-limiting fixed sheet metal is fixed to the annular movable inner shell and limits the connecting rod assembly between the first position-limiting fixed sheet metal and the annular movable inner shell;

[0038] The first position-limiting fixing sheet metal has a first position-limiting long hole, the long diameter direction of the first position-limiting long hole extends along the radial direction of the bearing, and the top end of the second center shaft is received in the first position-limiting long hole.

[0039] In one embodiment, the annular inner shell comprises:

[0040] A limiting groove protrudes from the annular inner shell along the longitudinal direction to receive the bottom end of the second central shaft, wherein the limiting groove extends along the radial direction of the bearing.

[0041] In one embodiment, the method includes:

[0042] a second position-limiting and fixing sheet metal, wherein the second position-limiting and fixing sheet metal is supported above the first position-limiting and fixing sheet metal and limits the pair of hoops between the second position-limiting and fixing sheet metal and the annular inner shell;

[0043] The second limiting fixed sheet metal is at least located directly above the first central axis.

[0044] The brake motor is supported on the second position-limiting fixing sheet metal.

[0045] In one embodiment, the cam is located between the first central axis and the second central axis.

[0046] In one embodiment, the connecting rod assembly includes a first connecting rod and a second connecting rod, wherein one end of the first connecting rod and the second connecting rod are hinged to the second central axis, and the other end is hinged to the second end of the pair of clamps respectively;

[0047] The brake motor has a brake output shaft extending along the radial direction of the bearing. The brake output shaft is connected to the second center shaft to drive the second center shaft to move along the radial direction of the bearing.

[0048] In one embodiment, the brake output shaft is formed as a screw, and the second central shaft has a screw hole threadedly matched with the brake output shaft;

[0049] The second center shaft is configured to move horizontally along the radial direction of the bearing under the rotational drive of the brake output shaft, without rotating together with the brake output shaft.

[0050] In one embodiment, the first central shaft is fixedly connected to the annular inner shell;

[0051] The second central shaft is movably limited to the annular inner housing along the radial direction of the bearing;

[0052] Wherein, the first central axis and the second central axis are located in the same radial direction of the bearing.

[0053] According to the above technical solution, this embodiment provides a brake assembly 30 in the ring-moving assembly, which responds to the input brake signal or the stop signal of the drive assembly 24, and drives the brake assembly 31 connected as an integral part of the ring-moving inner shell 22 through the brake motor 33 to clamp the brake disc assembly 32 connected as an integral part of the ring-moving top box 21, and the clamping generates forces in two directions, wherein the clamping force generated in the circumferential direction of the brake disc assembly 32 keeps the ring-moving inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the top cover assembly 10, and the clamping force generated in the direction of the first axis L keeps the ring-moving inner shell 22 in the ring-moving top box 21, thereby preventing the second camera assembly 12 mounted on the ring-moving inner shell 22 from accidentally falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The following drawings are only used to schematically illustrate and explain the present invention and are not intended to limit the scope of the present invention.

[0055] Figure 1 It is an exploded schematic diagram of the camera device of the present invention.

[0056] Figure 2 It is a structural schematic diagram of a first embodiment of a brake assembly in a camera device of the present invention.

[0057] Figure 3 yes Figure 2 Schematic diagram of local decomposition in .

[0058] Figure 4 yes Figure 2 Schematic diagram of the decomposition.

[0059] Figure 5a and Figure 5b 1 is a schematic diagram of the braking state of the braking assembly in the camera device of the present invention.

[0060] Figure 6 yes Figure 2 Schematic diagram of local installation.

[0061] Figure 7 It is a structural schematic diagram of a first embodiment of a brake assembly in a camera device of the present invention.

[0062] Figure 8 It is a structural schematic diagram of a second embodiment of a brake assembly in a camera device of the present invention.

[0063] Figure 9It is an exploded schematic diagram of a second embodiment of a brake assembly in a camera device of the present invention.

[0064] Figure 10a and Figure 10b It is a schematic diagram of the braking state of the braking assembly in the camera device of the present invention.

[0065] Figure 11 It is an exploded schematic diagram of a second embodiment of the camera device of the present invention.

[0066] Figure 12 FIG. 1 is a partial schematic diagram of a second embodiment of an imaging device according to the present invention. DETAILED DESCRIPTION

[0067] In order to have a clearer understanding of the technical features, purposes and effects of the invention, specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0068] In this document, “illustrative” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “illustrative” should not be interpreted as a more preferred or more advantageous technical solution.

[0069] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure and do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled.

[0070] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0071] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.

[0072] In this document, "equal" and "same" are not strictly limited in the mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use. Unless otherwise specified, the numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges contained therein.

[0073] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0074] In order to solve the problems in the prior art, the present invention provides a camera device with a brake assembly, in which a clamp brake device is added to the ring-moving assembly, which can not only keep the ring-moving assembly in a specified position when the ring-moving assembly stops rotating, but also prevent the camera assembly mounted on the ring-moving assembly from accidentally falling off.

[0075] Figure 1 It is an exploded schematic diagram of the camera device of the present invention. Figure 2 FIG. 1 is a schematic structural diagram of a first embodiment of a brake assembly in a camera device of the present invention. Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a camera device, including:

[0076] A top cover assembly 10 is used to mount the camera device to a surface, and the top cover assembly 10 defines a first axis L extending in a longitudinal direction;

[0077] The ring-moving assembly 20 includes a ring-moving top box 21 and a ring-moving inner shell 22. The ring-moving top box 21 is fixedly connected to the top cover assembly 10. The ring-moving inner shell 22 is rotatably mounted in the ring-moving top box 21 via a bearing 23 extending along the first axis L. The bearing 23 is fixedly connected to the ring-moving top box 21.

[0078] The first camera assembly 11 and the second camera assembly 12 are mounted on the inner ring housing 22 , and a sunshade cover 13 is provided outside the outer ring housing 20 ;

[0079] The brake assembly 30 includes a brake assembly 31 and a brake disc assembly 32. The brake assembly 31 is mounted on the annular inner housing 22 so as to rotate relative to the annular top box 21 along with the annular inner housing 22. The brake disc assembly 32 is fixed to the top of the bearing 23.

[0080] The ring-moving inner housing 22 can be driven by the driving assembly 24 to rotate horizontally around the first axis L relative to the ring-moving top box 21 to a specified azimuth angle, thereby driving the second camera assembly 12 to rotate horizontally relative to the first camera assembly 11 to a specified azimuth angle;

[0081] The brake assembly 30 is configured as follows: the brake assembly 31 moves along the radial direction of the bearing 23 under the drive of the brake motor 33, so as to be able to directly clamp the brake disc assembly 32. The clamping force generated in the circumferential direction of the brake disc assembly 32 enables the annular inner shell 22 and the second camera assembly 12 to remain at a specified azimuth angle, and the clamping force generated in the direction of the first axis L enables the annular inner shell 22 to be retained in the annular top box 11.

[0082] In this embodiment, the camera device can be implemented as a ball camera with a ring-shaped gun camera, wherein the top cover assembly 10 is implemented as a main body part for carrying the ball camera and the gun camera, which is fixed to a carrier and is generally defined as a fixing part. The ring-shaped assembly 20 is mounted on the top cover assembly 10, and has a fixed part, a ring-shaped top box 21, which is fixedly connected to the top cover assembly 10, and a ring-shaped inner shell 22 that rotates horizontally relative to the ring-shaped top box 21. The second camera assembly 12 is implemented as a gun camera mounted on the ring-shaped inner shell 22, which rotates horizontally to a specified azimuth angle relative to the ring-shaped top box 21 and the top cover assembly 10 along with the ring-shaped inner shell 22, and can also pitch and rotate relative to the ring-shaped inner shell 22. Further, the first camera assembly 11 can be implemented as a ball camera mounted on a fixed part. The first camera assembly 11 can be hung on the ring-shaped inner shell 22 via a bracket 11a. The bracket 11 a has a horizontal adjustment mechanism. Before installing the first camera assembly 11 , the position of the ring-moving assembly 20 is first adjusted, and then the position of the first camera assembly 11 relative to the ring-moving inner housing 22 is adjusted.

[0083] The annular inner shell 22 is rotatably mounted in the annular top box 21 through a bearing 23, wherein the bearing 23 has a fixed portion and a rotating portion that rotates axially relative to the fixed portion. The annular inner shell 22 is fixedly connected to the rotating portion, and the fixed portion of the bearing 23 is fixedly connected to the top cover assembly 10, thereby realizing that the annular inner shell 22 is rotatably mounted in the annular top box 21.

[0084] Driven by the drive assembly 24, the ring-moving inner housing 22 can rotate horizontally about the first axis L relative to the ring-moving top box 21 to a specified azimuth angle, thereby driving the second camera assembly 12 to rotate horizontally to the specified azimuth angle relative to the first camera assembly 11. When the ring-moving inner housing 22 reaches the specified azimuth angle, the drive assembly 24 stops rotating, stopping the ring-moving inner housing 22 at the specified azimuth angle. However, due to the presence of transmission backlash, the ring-moving inner housing 22 will wobble within the angular range of the backlash at the specified azimuth angle, thereby affecting imaging quality.

[0085] This embodiment provides a brake assembly 30 in the ring-moving assembly, which responds to the input brake signal or the stop signal of the drive assembly 24, and drives the brake assembly 31 connected to the ring-moving inner shell 22 as an integral body through the brake motor 33 to clamp the brake disc assembly 32 connected to the ring-moving top box 21 as an integral body, and the clamping generates forces in two directions, wherein the clamping force generated in the circumferential direction of the brake disc assembly 32 keeps the ring-moving inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the top cover assembly 10, and the clamping force generated in the direction of the first axis L keeps the ring-moving inner shell 22 in the ring-moving top box 21, thereby preventing the second camera assembly 12 mounted on the ring-moving inner shell 22 from accidentally falling.

[0086] Among them, such as Figure 2 and Figure 3 As shown, the bearing 23 is fixed to the center of the ring-moving top box 21 and protrudes from the top surface of the ring-moving top box 21. The center of the ring-moving inner shell 22 is fixedly connected to the rotating part of the bearing 23 to be rotatably supported on the ring-moving top box 21.

[0087] The top end of the bearing 23 is provided with a bearing end cover 231 , and the annular inner housing 22 is axially limited between the bearing end cover 231 and the top surface of the annular top box 21 ;

[0088] The brake disc assembly 32 is fixed to the bearing end cover 231 .

[0089] The drive assembly 24 includes:

[0090] The driving motor 241 is fixed to the annular inner housing 22 and deviates from the first axis L;

[0091] A synchronous wheel 242 , the synchronous wheel 242 is coaxially fixed to the bearing end cover 231 ;

[0092] The 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 shell 22 to rotate horizontally to a specified azimuth angle relative to the ring-shaped top box 21 through the driving motor 241.

[0093] In this embodiment, unlike conventional synchronous belt drive structures, the synchronous pulley 242 is fixedly connected to the fixed member, the bearing 23. That is, the synchronous pulley 242 is fixed and does not rotate. The drive motor 241 is mounted on the rotatable member, the annular inner housing 22, and is offset from the first axis L. Consequently, the operating mode of the drive assembly 24 in this embodiment is as follows: when the drive motor 241 outputs a rotational driving force, the synchronous belt 243 causes the drive motor 241 to rotate about the synchronous pulley 242, thereby driving the annular inner housing 22, to which it is fixed, to rotate about the bearing 23. The synchronous belt 243 is mounted on the synchronous pulley 242 in a manner similar to a hula hoop and does not drive the synchronous pulley 242 to rotate.

[0094] The synchronous wheel 242 is located between the bearing end cover 231 and the brake disc assembly 32 in the axial direction.

[0095] The synchronous wheel 242 and the brake disc assembly 32 are axially fixed to the bearing end cover 231 by fasteners that penetrate both the synchronous wheel 242 and the brake disc assembly 32 .

[0096] Because the ring-shaped top box is relatively stationary, the brake disc assembly and synchronous pulley are also relatively stationary. The brake assembly and drive assembly are fixed to the ring-shaped inner housing by screws; the drive assembly and synchronous pulley are driven by gears (or timing belts). Therefore, when the drive motor is activated, the brake assembly rotates along with the ring-shaped inner housing. When the brake assembly is activated, it interacts with the brake disc assembly to apply the brake.

[0097] Specifically, if Figure 4 As shown, the brake disc assembly 32 includes a brake disc 321 and a brake pad 322. The brake disc 321 is axially fixed to the bearing end cover 231. The brake pad 322 covers the brake disc 321 from the top to provide a friction surface extending along the peripheral wall. The brake disc 321 has a limit portion protruding radially outward.

[0098] Brake disc 321 is fixedly connected to bearing end cap 231 via an axial connection, while brake pad 322 provides a friction surface extending along the circumferential wall. Brake discs 321 and 322 are circumferentially limited by radially outwardly protruding stoppers to prevent relative rotation between them.

[0099] The brake assembly 31 includes:

[0100] Braking motor 33;

[0101] A pair of clamps 34 are cross-connected at the center and supported on the annular inner shell 22 through a first central axis 341. The first end of each clamp 34 has an arc-shaped arm 342 adapted to the periphery of the brake disc assembly 32;

[0102] A connecting rod assembly 35 is connected to the second end of each clamp 34 to drive the second ends of the pair of clamps 34 to move toward or away from each other under the drive of the brake motor 33, thereby driving the pair of arc-shaped arms 342 to move away from or toward each other, so that the arc-shaped arms 322 are away from or abut the periphery of the brake disc assembly 32;

[0103] The brake motor 33 is configured to drive the connecting rod assembly 35 along the radial direction of the bearing 23 .

[0104] A pair of clamps 34 are arranged crosswise, with their middle portions passing through the stepped shaft on the inner housing 22 via a first central axis 341, forming a scissor-arm structure. Their second ends are connected to the connecting rod assembly and secured with pins, allowing them to move toward or away from each other, driven by the connecting rod assembly. When the second ends of the clamps 34 are driven toward each other by the connecting rod assembly, the spacing between the second ends of the clamps 34 decreases. Simultaneously, the first ends of the clamps 34 move away from each other, increasing the spacing. This causes the first ends of the clamps 34 to disengage from the periphery of the brake disc assembly 32, thereby releasing the brake assembly 31 from its grip on the brake disc assembly 32. When the second ends of the pair of hoops 34 are driven by the connecting rod assembly to move away from each other, the distance between the second ends of the pair of hoops 34 increases, and at the same time, the first ends of the pair of hoops 34 move toward each other and the distance between them decreases. Then, the first ends of the hoops 34 are tightly clamped to the periphery of the brake disc assembly 32, thereby braking the annular assembly through the clamping of the brake assembly 31 on the brake disc assembly 32, so as to maintain the annular inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the top cover assembly 10.

[0105] The connecting rod assembly 35 includes:

[0106] A first connecting rod 351 and a second connecting rod 352, one end of the first connecting rod 351 and the second connecting rod 352 are hinged to the second central axis 354, and the other end is hinged to the second end of the pair of hoops 34 respectively;

[0107] The pull rod 353, driven by the brake motor 33, pulls the first connecting rod 351 or the second connecting rod 352 to move, so that the angle between the first connecting rod 351 and the second connecting rod 352 changes, so that the second ends of the pair of clamps 34 move toward or away from each other;

[0108] The brake motor 33 has a brake output shaft 331 extending along the first axis L. The brake output shaft 331 is connected to the pull rod 353 through a cam 355, so that the pull rod 353 is driven by the elliptical moving trajectory of the cam 355 in the horizontal direction to pull the first connecting rod 351 or the second connecting rod 352 to move along the radial direction of the bearing 23.

[0109] The brake output shaft 331 can be implemented with a D-shaped cross-section to achieve rotational position limiting with the cam 355. The edge of the cam 355 can have a coupling for connecting to the pull rod 353. This coupling extends along the first axis L. The pull rod 353 can have a receiving groove extending along its extension direction for receiving the coupling. This cam structure can convert the rotation of the brake output shaft 331 into linear movement of the pull rod 353 along the radial direction of the bearing 23.

[0110] The pull rod 353 is connected to one of the first and second connecting rods 351, 352, to move the connected connecting rod along the radial direction of the bearing 23, thereby changing the angle between the first and second connecting rods 351, 352. The spacing between the second ends of the pair of clamps 34 is determined by the distance between the distal ends of the first and second connecting rods. When the angle between the first and second connecting rods 351, 352 is 180°, i.e., forming a straight line, the distance between the distal ends of the first and second connecting rods is maximum, the spacing between the second ends of the pair of clamps 34 is maximum, and the spacing between the first ends of the pair of clamps 34 is minimum, corresponding to the state in which the brake assembly 31 is tightly gripping the brake disc assembly 32. When the angle between the first and second connecting rods 351, 352 decreases, the distance between the distal ends of the first and second connecting rods 351, 352 decreases, the spacing between the second ends of the pair of clamps 34 is minimum, and the spacing between the first ends of the pair of clamps 34 is maximum, corresponding to the state in which the brake assembly 31 is releasing the brake disc assembly 32.

[0111] It can be seen that when the first connecting rod 351 and the second connecting rod 352 form a straight line, the pair of arc-shaped arms 342 hold the brake disc assembly 32, and the pull rod 353 moves in a direction perpendicular to the straight line under the drive of the brake motor 33, so as to lock the pair of arc-shaped arms 322 in the position of holding the brake disc assembly 32 when the brake motor 33 does not output driving force.

[0112] Depend on Figure 5a It can be clearly seen that when the first link 351 and the second link 352 form a straight line, the pair of arc-shaped arms 342 hold the brake disc assembly 32 tightly, and the direction of the pull rod 353 is perpendicular to the straight line formed by the first link 351 and the second link 352, thus forming a self-locking state. When the brake motor 33 stops unexpectedly, the link assembly will be locked. Figure 5a The pair of arc-shaped arms 342 are shown in a state where they hold the brake disc assembly 32 tightly and will not accidentally become loose.

[0113] The first central shaft 341 is fixedly connected to the stepped shaft of the rotating inner shell 22 for supporting the clamp 34 .

[0114] The second central shaft 354 is movably limited to the movable inner housing 12 along the radial direction of the bearing 23 to avoid movement on the first axis L;

[0115] The first central axis 341 and the second central axis 354 are located in the same radial direction of the bearing 23 .

[0116] The annular inner shell 22 includes:

[0117] The limiting groove 221 protrudes from the annular inner housing 22 along the longitudinal direction to receive the bottom end of the second central shaft 333 , wherein the limiting groove 221 extends along the radial direction of the bearing 23 .

[0118] The limiting groove 221 defines the moving direction and moving range of the second central axis 354 .

[0119] The brake motor 33 rotates clockwise, driving the cam 355 to rotate clockwise, and pushes the second center axis 354 to slide in the limiting groove 221 of the annular inner shell through the pull rod 353, driving the angle between the first connecting rod 351 and the second connecting rod 352 to decrease, thereby driving the second ends of a pair of clamps 34 to move toward each other, and the first ends of the clamps 34 to move away from each other around the first center axis 341. The first end of the clamp 34 disengages from the periphery of the brake disc assembly, and the annular inner shell 22 disengages from the annular top box 21 to achieve relative rotation.

[0120] The brake motor 33 rotates counterclockwise, driving the cam 355 to rotate counterclockwise, and pushes the second center axis 354 to slide in the limiting groove 221 of the annular inner shell 22 through the pull rod 353, driving the angle between the first connecting rod 351 and the second connecting rod 352 to increase, thereby driving the second ends of a pair of clamps 34 to move away from each other and the first ends of the clamps 34 to move toward each other around the first center axis 341. The first ends of the clamps 34 clamp the periphery of the brake disc assembly, so that the annular inner shell 11 and the annular top box 21 cannot rotate relative to each other.

[0121] When the brake assembly is tightened, the clamping hoop 34 and the brake disc assembly 32 are tightly locked together. Because the brake assembly is fixed to the annular inner housing 22, and the brake disc assembly 32 is fixed to the annular top box 21, this braking structure eliminates the backlash problem associated with braking. Furthermore, the arcuate active surface of the clamping hoop's first end interacts with the arcuate circumferential surface of the brake disc assembly, ensuring stable and smooth braking with high friction.

[0122] Among them, such as Figure 3 and Figure 4 Shown, including:

[0123] A first position-limiting fixed sheet metal 51 is fixed to the circular movable inner housing 22 and limits the connecting rod assembly 53 between the first position-limiting fixed sheet metal 51 and the circular movable inner housing 22;

[0124] The first position-limiting fixing sheet metal 51 has a first position-limiting long hole 511 , the long diameter direction of the first position-limiting long hole 511 extends along the radial direction of the bearing 23 , and the top end of the second center shaft 354 is received in the first position-limiting long hole 511 .

[0125] Also includes:

[0126] The second position-limiting fixed sheet metal 52 is supported on the first position-limiting fixed sheet metal 51 and limits the pair of clamps 34 between the second position-limiting fixed sheet metal 52 and the annular inner shell 22;

[0127] The second position-limiting fixing sheet metal 52 is at least located directly above the first central axis 341 ;

[0128] The brake motor 33 is supported on the second position-limiting fixing sheet metal 52 .

[0129] The cam 355 is located between the first central axis 341 and the second central axis 354 .

[0130] This embodiment introduces a brake structure to solve the problem of tooth gap. The brake is activated after the vehicle moves to the specified position. After the power is cut off, the structure self-locks and provides a self-locking force to keep the vehicle stopped. Figure 4 and Figure 5a 、 Figure 5b It can be seen that the brake assembly in this embodiment utilizes the free space in the ring-shaped assembly. The brake assembly is located on one side of the bearing 23, and the drive structure of the brake assembly is integrated within the extension range of the clamp 34, making full use of the narrow space in the ring-shaped assembly without affecting the normal operation of the drive assembly. Figure 2 As shown, the driving assembly 24 and the braking assembly 30 are respectively located at two ends of the bearing 23 in the radial direction, and their operations do not interfere with each other.

[0131] Figure 8 It is a structural schematic diagram of a second embodiment of a brake assembly in a camera device of the present invention. Figure 9 1 is an exploded schematic diagram of a second embodiment of a brake assembly in a camera device of the present invention.

[0132] In another embodiment of the present invention, another connecting rod assembly is provided.

[0133] The connecting rod assembly 35 includes a first connecting rod 351 and a second connecting rod 352. One end of the first connecting rod 351 and the second connecting rod 352 are hinged to the second central axis 354, and the other end is hinged to the second end of the pair of clamps 34 respectively.

[0134] Combine Figure 11 and Figure 12 As shown, the brake motor 33 has a brake output shaft 331 extending along the radial direction of the bearing 23 , and the brake output shaft 331 is connected to the second center shaft 354 to drive the second center shaft 354 to move along the radial direction of the bearing 23 .

[0135] and Figure 4What is different from the first embodiment shown is that the brake output shaft 331 of the brake motor in this embodiment extends along the radial direction of the bearing 23 and can be directly connected to the second center shaft 354 to drive the second center shaft 354 to move along the radial direction of the bearing 23, thereby reducing the complexity of the drive structure compared with the first embodiment.

[0136] The brake output shaft 331 is formed as a screw, and the second central shaft 354 has a screw hole 354a threadedly matched with the brake output shaft 331;

[0137] The second central shaft 354 is configured to move horizontally along the radial direction of the bearing 23 under the rotational drive of the brake output shaft 331 , without rotating together with the brake output shaft 331 .

[0138] The top and bottom ends of the second center shaft 354 are both limited and thus will not rotate with the brake output shaft 331 . Thus, the rotation of the brake output shaft 331 is converted into horizontal movement of the second center shaft 354 along the radial direction of the bearing 23 through threaded engagement.

[0139] Specifically, the first central shaft 341 is fixedly connected to the annular inner housing 22, and the second central shaft 354 is movably limited to the annular inner housing 22 along the radial direction of the bearing 23. The first central shaft 341 and the second central shaft 354 are located in the same radial direction of the bearing 23.

[0140] like Figure 10a and Figure 10b As shown, similar to the first embodiment, the brake output shaft 331 is directly connected to the second central shaft 354 to drive the second central shaft 354 in the radial direction of the bearing 23, thereby changing the angle between the first and second connecting rods 351 and 352. The spacing between the second ends of the pair of clamps 34 is determined by the distance between the distal ends of the first and second connecting rods. When the angle between the first and second connecting rods 351 and 352 is 180°, i.e., forming a straight line, the distance between the distal ends of the first and second connecting rods is maximum, the spacing between the second ends of the pair of clamps 34 is maximum, and the spacing between the first ends of the pair of clamps 34 is minimum, corresponding to the state in which the brake assembly 31 is tightly gripping the brake disc assembly 32. When the angle between the first and second connecting rods 351 and 352 decreases, the distance between the distal ends of the first and second connecting rods 351 and 352 decreases, the spacing between the second ends of the pair of clamps 34 is minimum, and the spacing between the first ends of the pair of clamps 34 is maximum, corresponding to the state in which the brake assembly 31 is releasing the brake disc assembly 32.

[0141] It can be seen that when the first connecting rod 351 and the second connecting rod 352 form a straight line, the pair of arc-shaped arms 342 hold the brake disc assembly 32, and the pull rod 353 moves in a direction perpendicular to the straight line under the drive of the brake motor 33, so as to lock the pair of arc-shaped arms 322 in the position of holding the brake disc assembly 32 when the brake motor 33 does not output driving force.

[0142] Depend on Figure 10a It can be clearly seen that when the first link 351 and the second link 352 form a straight line, the pair of arc-shaped arms 342 hold the brake disc assembly 32 tightly, and the direction of the brake output shaft 331 is perpendicular to the straight line formed by the first link 351 and the second link 352, thus forming a self-locking state. When the brake motor 33 stops unexpectedly, the link assembly will be locked. Figure 10a The pair of arc-shaped arms 342 are shown in a state where they hold the brake disc assembly 32 tightly and will not accidentally become loose.

[0143] The ring-moving inner shell 22 includes:

[0144] The limiting groove 221 protrudes from the annular inner housing 22 along the longitudinal direction to receive the bottom end of the second central shaft 333 , wherein the limiting groove 221 extends along the radial direction of the bearing 23 .

[0145] The limiting groove 221 defines the moving direction and moving range of the second central axis 354 .

[0146] The brake motor 33 rotates clockwise to drive the second center axis 354 to slide in the limiting groove 221 of the annular inner shell toward the bearing 23, driving the angle between the first connecting rod 351 and the second connecting rod 352 to decrease, thereby driving the second ends of a pair of clamps 34 to move toward each other, and the first ends of the clamps 34 to move away from each other around the first center axis 341. The first end of the clamp 34 is separated from the periphery of the brake disc assembly, and the annular inner shell 22 is separated from the annular top box 21 to achieve relative rotation.

[0147] The brake motor 33 rotates counterclockwise to drive the second center axis 354 to slide in the limiting groove 221 of the annular inner shell 22 away from the bearing 23, driving the angle between the first connecting rod 351 and the second connecting rod 352 to increase, thereby driving the second ends of a pair of clamps 34 to move away from each other, and the first ends of the clamps 34 to move toward each other around the first center axis 341 until the first connecting rod 351 and the second connecting rod 352 form a straight line. The first end of the clamp 34 clamps the periphery of the brake disc assembly, so that the annular inner shell 11 and the annular top box 21 cannot rotate relative to each other.

[0148] When the brake assembly is tightened, the clamping hoop 34 and the brake disc assembly 32 are tightly locked together. Because the brake assembly is fixed to the annular inner housing 22, and the brake disc assembly 32 is fixed to the annular top box 21, this braking structure eliminates the backlash problem associated with braking. Furthermore, the arcuate active surface of the clamping hoop's first end interacts with the arcuate circumferential surface of the brake disc assembly, ensuring stable and smooth braking with high friction.

[0149] According to the above technical solution, this embodiment provides a brake assembly 30 in the ring-moving assembly, which responds to the input brake signal or the stop signal of the drive assembly 24, and drives the brake assembly 31 connected as an integral part of the ring-moving inner shell 22 through the brake motor 33 to clamp the brake disc assembly 32 connected as an integral part of the ring-moving top box 21, and the clamping generates forces in two directions, wherein the clamping force generated in the circumferential direction of the brake disc assembly 32 keeps the ring-moving inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the top cover assembly 10, and the clamping force generated in the direction of the first axis L keeps the ring-moving inner shell 22 in the ring-moving top box 21, thereby preventing the second camera assembly 12 mounted on the ring-moving inner shell 22 from accidentally falling.

[0150] The series of detailed descriptions listed above are merely specific descriptions of feasible implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not depart from the technical spirit of the present invention, such as the combination, division or repetition of features, should be included in the scope of protection of the present invention.

Claims

1. A camera device, characterized in that: include: a top cover assembly (10), the top cover assembly (10) being used to mount the camera device to a surface, the top cover assembly (10) defining a first axis (L) extending in a longitudinal direction; A ring-moving assembly (20), the ring-moving assembly (20) comprising a ring-moving top box (21) and a ring-moving inner shell (22), the ring-moving top box (21) being fixedly connected to the top cover assembly (10), the ring-moving inner shell (22) being rotatably mounted in the ring-moving top box (21) via a bearing (23) extending along the first axis (L), the bearing (23) being fixedly connected to the ring-moving top box (21); A first camera assembly (11) and a second camera assembly (12), wherein the first camera assembly (11) and the second camera assembly (12) are mounted on the annular inner housing (22); A brake assembly (30), the brake assembly (30) comprising: a brake assembly (31) and a brake disc assembly (32), the brake assembly (31) being mounted on the annular inner shell (22) so as to rotate relative to the annular top box (21) along with the annular inner shell (22), and the brake disc assembly (32) being fixed to the top end of the bearing (23); The ring-shaped inner shell (22) can be driven by the driving assembly (24) to rotate horizontally around the first axis (L) relative to the ring-shaped top box (21) to a specified azimuth angle, thereby driving the second camera assembly (12) to rotate horizontally relative to the first camera assembly (11) to a specified azimuth angle; The brake assembly (30) is configured as follows: the brake assembly (31) moves along the radial direction of the bearing (23) under the drive of the brake motor (33) so as to be able to directly clamp the brake disc assembly (32); the force generated by the clamping in the circumferential direction of the brake disc assembly (32) enables the ring-shaped inner shell (22) and the second camera assembly (12) to be maintained at the specified azimuth angle; the force generated by the clamping in the direction of the first axis (L) enables the ring-shaped inner shell (22) to be maintained in the ring-shaped top box (21).

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

3. The imaging device according to claim 2, wherein: The drive assembly (24) comprises: a driving motor (241), the driving motor (241) being fixed to the annular inner housing (22) and deviating from the first axis (L); a synchronous wheel (242), the synchronous wheel (242) being coaxially fixed to the bearing end cover (231); A synchronous belt (243) is connected between the output shaft of the drive motor (241) and the synchronous wheel (242) to drive the ring-moving inner shell (22) to rotate horizontally relative to the ring-moving top box (21) to the specified azimuth angle via the drive motor (241).

4. The imaging device according to 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 that penetrate the synchronous wheel (242) and the brake disc assembly (32).

5. The imaging device according to claim 3, wherein The brake disc assembly (32) includes a brake disc (321) and a brake pad (322), wherein the brake disc (321) is axially fixed to the bearing end cover (231), and the brake pad (322) covers the brake disc (321) from the top to provide a friction surface extending along the peripheral wall; The brake disc (321) has a limiting portion protruding radially outward.

6. The imaging device according to claim 1, wherein The brake assembly (31) comprises: Brake motor (33); A pair of hoops (34), the hoops (34) are cross-connected at the center and supported on the annular inner shell (22) via a first central axis (341), and the first end of each hoops (34) has an arc-shaped arm (342) adapted to the periphery of the brake disc assembly (32); A connecting rod assembly (35), wherein the connecting rod assembly (35) is connected to the second end of each clamp (34) to drive the second ends of a pair of clamps (34) to move toward or away from each other under the drive of the brake motor (33), thereby driving the pair of arc-shaped arms (342) to move away from or toward each other, so that the arc-shaped arms (342) are away from or abut against the periphery of the brake disc assembly (32); The brake motor (33) is configured to drive the connecting rod assembly (35) along the radial direction of the bearing (23).

7. The imaging device according to claim 6, wherein The connecting rod assembly (35) comprises: A first connecting rod (351) and a second connecting rod (352), wherein one end of the first connecting rod (351) and the second connecting rod (352) are hinged to the second central axis (354), and the other ends are respectively hinged to the second ends of a pair of hoops (34); A pull rod (353), driven by the brake motor (33), pulling the first connecting rod (351) or the second connecting rod (352) to move, so that the angle between the first connecting rod (351) and the second connecting rod (352) changes, so that the second ends of the pair of clamps (34) move toward or away from each other; The brake motor (33) has a brake output shaft (331) extending along the direction of the first axis (L), and the brake output shaft (331) is connected to the pull rod (353) through a cam (355), so that the pull rod (353) is driven by the elliptical movement trajectory of the cam (355) in the horizontal direction to pull the first connecting rod (351) or the second connecting rod (352) to move along the radial direction of the bearing (23).

8. The imaging device according to claim 7, wherein: When the first connecting rod (351) and the second connecting rod (352) form a straight line, the pair of arc-shaped arms (342) hold the brake disc assembly (32) tightly. The pull rod (353) moves in a direction perpendicular to the straight line under the drive of the brake motor (33), so as to lock the pair of arc-shaped arms (342) in a position of holding the brake disc assembly (32) when the brake motor (33) does not output a driving force.

9. The imaging device according to claim 7, wherein: The first central shaft (341) is fixedly connected to the annular inner shell (22); The second central axis (354) is movably limited to the annular inner housing (22) along the radial direction of the bearing (23); The first center axis (341) and the second center axis (354) are located in the same radial direction of the bearing (23).

10. The imaging device according to claim 7, wherein include: a first position-limiting fixed sheet metal (51), wherein the first position-limiting fixed sheet metal (51) is fixed to the annular inner shell (22), and limits the connecting rod assembly (35) between the first position-limiting fixed sheet metal (51) and the annular inner shell (22); The first position-limiting fixing sheet metal (51) has a first position-limiting long hole (511), the long diameter direction of the first position-limiting long hole (511) extends along the radial direction of the bearing (23), and the top end of the second center axis (354) is received in the first position-limiting long hole (511).

11. The imaging device according to claim 7, wherein The annular inner shell (22) comprises: A limiting groove (221) protrudes from the annular inner housing (22) in a longitudinal direction to receive the bottom end of the second central shaft (354), wherein the limiting groove (221) extends along the radial direction of the bearing (23).

12. The imaging device according to claim 10, wherein: include: a second position-limiting fixed sheet metal (52), the second position-limiting fixed sheet metal (52) being supported above the first position-limiting fixed sheet metal (51) and limiting the pair of hoops (34) between the second position-limiting fixed sheet metal (52) and the annular inner shell (22); The second position-limiting fixed sheet metal (52) is at least located directly above the first central axis (341). The brake motor (33) is supported on the second position-limiting fixed sheet metal (52).

13. The imaging device according to claim 7, wherein The cam (355) is located between the first central axis (341) and the second central axis (354).

14. The imaging device according to claim 6, wherein The connecting rod assembly (35) comprises a first connecting rod (351) and a second connecting rod (352), one end of the first connecting rod (351) and the second connecting rod (352) being hinged to the second central axis (354), and the other end being hinged to the second end of a pair of hoops (34); The brake motor (33) has a brake output shaft (331) extending along the radial direction of the bearing (23), and the brake output shaft (331) is connected to the second center shaft (354) to drive the second center shaft (354) to move along the radial direction of the bearing (23).

15. The imaging device according to claim 14, wherein: The brake output shaft (331) is formed as a screw, and the second central shaft (354) has a screw hole (354a) threadedly matched with the brake output shaft (331); The second central shaft (354) is configured to move horizontally along the radial direction of the bearing (23) under the rotational drive of the brake output shaft (331), without rotating along with the brake output shaft (331).

16. The imaging device according to claim 14, wherein: The first central shaft (341) is fixedly connected to the annular inner shell (22); The second central axis (354) is movably limited to the annular inner housing (22) along the radial direction of the bearing (23); The first center axis (341) and the second center axis (354) are located in the same radial direction of the bearing (23).

Images