CN119211672A - Camera device with brake assembly - Google Patents

Abstract

The invention provides an image pickup device which comprises a top cover assembly, a ring moving assembly, a first image pickup assembly and a brake assembly, wherein the top cover assembly is used for limiting a first axis extending along a longitudinal direction, the ring moving assembly comprises a ring moving top box and a ring moving inner shell, the ring moving top box is fixedly connected to the top cover assembly, the ring moving inner shell is rotatably arranged in the ring moving top box through a bearing extending along the first axis, the first image pickup assembly and the second image pickup assembly are arranged on the ring moving inner shell, the brake assembly comprises a band-type brake assembly and a brake disc assembly, the band-type brake assembly is arranged on the ring moving inner shell and rotates along the ring moving inner shell together with the ring moving inner shell relative to the ring moving top box, the brake disc assembly is fixed to the top end of the bearing, the ring moving inner shell horizontally rotates to a specified azimuth angle relative to the ring moving top box under the driving of a first driving assembly, and the brake assembly is configured to enable the ring moving inner shell and the second image pickup assembly to be directly held at the specified azimuth angle under the driving of a brake motor.

Description

Image pickup apparatus having brake assembly

Technical Field

The invention relates to the technical field of image pickup devices, in particular to an image pickup device with a brake component.

Background

In electronic devices with rotating parts, the gear backlash can cause small angular deviations of the rotating parts around the stop position, but when the electronic device is applied in a delicate application scenario, such as in an image pickup device with a ring-motion assembly, the small angular deviations can cause significant deviations in the angle or position of the image.

Disclosure of Invention

In order to solve the technical problems, the invention provides the camera device with the brake assembly, wherein the hoop brake device is added in the annular moving assembly, so that the annular moving assembly can be kept at a designated position when the annular moving assembly stops rotating, and the camera assembly carried on the annular moving assembly can be prevented from falling accidentally.

In one embodiment, there is provided an image pickup apparatus including:

a cap assembly for mounting the image capture device to a surface, the cap assembly defining a first axis extending in a longitudinal direction;

The annular moving assembly is provided with an annular moving top box and an annular moving inner shell, the annular moving top box is fixedly connected with the top cover assembly, the annular moving inner shell is rotatably arranged in the annular moving top box through a bearing extending along the first axis, and the bearing is fixedly connected with the annular moving top box;

the first camera shooting assembly and the second camera shooting assembly are carried on the annular inner shell;

The brake assembly comprises a band-type brake assembly and a brake disc assembly, wherein the band-type brake assembly is arranged on the annular inner shell so as to rotate together with the annular inner shell relative to the annular top box, and the brake disc assembly is fixed at the top end of the bearing;

The annular moving inner shell can horizontally rotate to a specified azimuth angle relative to the annular moving top box around the first axis under the drive of the driving component so as to drive the second camera component to horizontally rotate to the specified azimuth angle relative to the first camera component;

the brake assembly is configured to move along the radial direction of the bearing under the drive of the brake motor so as to be capable of directly clasping the brake disc assembly, the clasping generates a force in the circumferential direction of the brake disc assembly so that the annular inner shell and the second camera assembly are kept at the designated azimuth angle, and the clasping generates a force in the first axis direction so that the annular inner shell is kept in the annular top box.

In one embodiment, the bearing is fixed at the center of the ring-shaped movable top box and protrudes out of the top surface of the ring-shaped movable top box, and the center of the ring-shaped movable inner shell is fixedly connected with the rotating part of the bearing so as to be rotatably supported on the ring-shaped movable top box;

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;

the brake disc assembly is fixed to the bearing end cap.

In one embodiment, the drive assembly includes:

the driving motor is fixed on the annular inner shell and deviates from the first axis

The synchronous wheel is coaxially fixed on the bearing end cover;

And the synchronous belt is connected between the output shaft of the driving motor and the synchronous wheel, so that the driving motor drives the annular inner shell to horizontally rotate to the designated azimuth angle relative to the annular moving top box.

In one embodiment, the synchronizing wheel is located axially between the bearing end cap and the brake disc assembly,

The synchronous wheel and brake disc assembly is axially fixed to the bearing end cover through a fastener penetrating through the synchronous wheel and brake disc assembly at the same time.

In one embodiment, the brake disc assembly includes a brake disc axially secured to the bearing end cap and a brake pad covering the brake disc from the top to provide a friction surface extending along the peripheral wall;

the brake disc is provided with a limiting part protruding outwards in the radial direction.

In one embodiment, the band-type brake assembly includes:

Braking the motor;

the centers of the hoops are in cross connection and supported on the annular inner shell through a first central shaft, and the first end of each hoop is provided with an arc-shaped arm matched with the periphery of the brake disc assembly;

the connecting rod assembly is connected with the second end of each anchor ear so as to drive the second ends of a pair of anchor ears to move oppositely or back to back under the drive of the brake motor, and drive a pair of arc-shaped arms to move oppositely or back to back so as to enable the arc-shaped arms to be far away from or abut against the periphery of the brake disc assembly;

wherein the brake motor is configured to drive the linkage assembly in a radial direction of the bearing.

In one embodiment, the connecting rod assembly includes:

one end of the first connecting rod and one end of the second connecting rod are hinged to the second central shaft, and the other end of the first connecting rod and one end of the second connecting rod are respectively hinged to the second ends of the pair of anchor ears;

The pull rod pulls the first connecting rod or the second connecting rod to move under the drive of the brake motor, so that the included angle between the first connecting rod and the second connecting rod is changed, and the second ends of the pair of anchor hoops move oppositely or back to back;

the brake motor is provided with a brake output shaft extending along the first axis direction, and the brake output shaft is connected with the pull rod through a cam so as to drive the pull rod to pull the first connecting rod or the second connecting rod to move along the radial direction of the bearing through an elliptical moving track of the cam in the horizontal direction.

In one embodiment, the pair of arcuate arms hugs the brake disc assembly when the first and second links are formed in a straight line,

The pull rod is driven by the brake motor to move along the direction perpendicular to the straight line, so that the pair of arc-shaped arms are locked at the position of holding the brake disc assembly tightly when the brake motor does not output driving force.

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

the second central shaft is movably limited in the annular inner shell along the radial direction of the bearing;

wherein the first central shaft and the second central shaft are located in the same radial direction of the bearing.

In one embodiment, the method comprises:

The first limiting and fixing metal plate is fixed on the annular inner shell and limits the connecting rod assembly between the first limiting and fixing metal plate and the annular inner shell;

The first limiting fixing metal plate is provided with a first limiting long hole, the long diameter direction of the first limiting long hole extends along the radial direction of the bearing, and the top end of the second central shaft is received in the first limiting long hole.

In one embodiment, the annular inner housing comprises:

And the limiting groove protrudes from the annular inner shell along the longitudinal direction so as to receive the bottom end of the second central shaft, wherein the limiting groove extends along the radial direction of the bearing.

In one embodiment, the method comprises:

The second limiting fixed metal plate is supported above the first limiting fixed metal plate, and the pair of anchor clamps are limited between the second limiting fixed metal plate and the annular inner shell;

Wherein the second limiting and fixing sheet metal is at least positioned right above the first central shaft

The braking motor is supported on the second limiting and fixing metal plate.

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

In one embodiment, the connecting rod assembly comprises a first connecting rod and a second connecting rod, one ends of the first connecting rod and the second connecting rod are hinged to a second central shaft, and the other ends of the first connecting rod and the second connecting rod are respectively hinged to the second ends of the pair of hoops;

The brake motor is provided with a brake output shaft extending along the radial direction of the bearing, and the brake output shaft is connected with the second central shaft so as to drive the second central shaft to move along the radial direction of the bearing.

In one embodiment, the brake output shaft is formed as a lead screw, and the second central shaft has a screw hole in threaded engagement with the brake output shaft;

The second center shaft is configured to move horizontally in a radial direction of the bearing without rotating together with the brake output shaft under rotational drive of the brake output shaft.

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

the second central shaft is movably limited in the annular inner shell along the radial direction of the bearing;

wherein the first central shaft and the second central shaft are located in the same radial direction of the bearing.

According to the above technical solution, the present embodiment provides, in the annular brake assembly, a brake assembly 30 which, in response to an input brake signal or a stop signal of the driving assembly 24, drives, by a brake motor 33, a band-type brake assembly 31 integrally connected with the annular inner shell 22 to hug a brake disc assembly 32 integrally connected with the annular top box 21, and generates forces in two directions by the hugging, wherein the forces generated by the hugging in the circumferential direction of the brake disc assembly 32 cause the annular inner shell 22 and the second camera assembly 12 to be held at a specified azimuth angle with respect to the top cover assembly 10, and the forces generated by the hugging in the direction of the first axis L cause the annular inner shell 22 to be held within the annular top box 21, thereby preventing accidental dropping of the second camera assembly 12 mounted on the annular inner shell 22.

Drawings

The following drawings are only illustrative of the invention and do not limit the scope of the invention.

Fig.1 is an exploded schematic view of an image pickup apparatus of the present invention.

Fig. 2 is a schematic structural view of a first embodiment of a brake assembly in the image pickup apparatus of the present invention.

Fig. 3 is a partially exploded view of fig. 2.

Fig. 4 is an exploded view of fig. 2.

Fig. 5a and 5b are schematic views showing a braking state of a brake assembly in the image pickup apparatus of the present invention.

Fig. 6 is a partial installation schematic of fig. 2.

Fig. 7 is a schematic structural view of a first embodiment of a brake assembly in the image pickup apparatus of the present invention.

Fig. 8 is a schematic structural view of a second embodiment of a brake assembly in the image pickup apparatus of the present invention.

Fig. 9 is an exploded schematic view of a second embodiment of a brake assembly in an image pickup apparatus of the present invention.

Fig. 10a and 10b are schematic views of a braking state of a brake assembly in the image pickup apparatus of the present invention.

Fig. 11 is an exploded schematic view of a second embodiment of an image pickup apparatus of the present invention.

Fig. 12 is a partial schematic view of a second embodiment of the image pickup apparatus of the present invention.

Detailed Description

For a clearer understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals refer to like parts throughout the various views.

In this document, "schematic" means "serving as an example, instance, or illustration," and any illustrations, embodiments described herein as "schematic" should not be construed as a more preferred or advantageous solution.

For simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the drawings, and do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.

Herein, "first", "second", etc. are used only for distinguishing one another, and do not denote any order or importance, but rather denote a prerequisite of presence.

Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc. Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.

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

In order to solve the problems in the prior art, the invention provides the camera device with the brake assembly, wherein the hoop brake device is added in the annular moving assembly, so that the annular moving assembly can be kept at a designated position when the annular moving assembly stops rotating, and the camera assembly carried on the annular moving assembly can be prevented from falling accidentally.

Fig. 1 is an exploded schematic view of an image pickup apparatus of the present invention. Fig. 2 is a schematic structural view of a first embodiment of a brake assembly in the image pickup apparatus of the present invention. As shown in fig. 1 and 2, an embodiment of the present invention provides an image pickup apparatus including:

a top cover assembly 10, the top cover assembly 10 for mounting the image pickup device to a surface, the top cover assembly 10 defining a first axis L extending in a longitudinal direction;

The annular moving assembly 20, the annular moving assembly 20 is provided with an annular moving top box 21 and an annular moving inner shell 22, the annular moving top box 21 is fixedly connected with the top cover assembly 10, the annular moving inner shell 22 is rotatably arranged in the annular moving top box 21 through a bearing 23 extending along a first axis L, and the bearing 23 is fixedly connected with the annular 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 a circular inner shell 22, and a sunshade cover body 13 is arranged outside the circular assembly 20;

The brake assembly 30 comprises a band-type brake assembly 31 and a brake disc assembly 32, wherein the band-type brake assembly 31 is arranged on the annular inner shell 22 so as to rotate together with the annular inner shell 22 relative to the annular top box 21, and the brake disc assembly 32 is fixed at the top end of the bearing 23;

The annular inner shell 22 can rotate horizontally about the first axis L to a designated azimuth angle relative to the annular top box 21 under the driving of the driving component 24, so as to drive the second camera component 12 to rotate horizontally to a designated azimuth angle relative to the first camera component 11;

The brake assembly 30 is configured such that the band-type brake assembly 31 is moved in the radial direction of the bearing 23 by the drive of the brake motor 33 to be able to directly hug the brake disc assembly 32, the force generated in the circumferential direction of the hug of the brake disc assembly 32 keeps the inner annular housing 22 and the second camera assembly 12 at a specified azimuth, and the force generated in the direction of the first axis L of the hug keeps the inner annular housing 22 within the annular top box 11.

In this embodiment, the camera device may be implemented as a ball machine with a ring-type bolt, wherein the cap assembly 10 is implemented as a body portion for carrying the ball machine and the bolt, which is secured to a carrier, typically defined as a mount. The ring assembly 20 is mounted to the head assembly 10, and has a fixed portion, a ring top box 21, fixedly coupled to the head assembly 10, and a ring inner case 22 horizontally rotated with respect to the ring top box 21. The second camera assembly 12 is implemented as a bolt mounted on the annular inner housing 22 and rotates horizontally with the annular inner housing 22 to a designated azimuth angle relative to the annular top box 21 and the top cover assembly 10, and also rotates in pitch relative to the annular inner housing 22. Further, the first camera module 11 may be implemented as a ball machine mounted on a fixed portion. The first camera assembly 11 can be hung on the annular inner shell 22 through a bracket 11 a. The bracket 11a has a horizontal adjustment mechanism for first adjusting the position of the annular moving member 20 before the first camera member 11 is mounted, and then adjusting the position of the first camera member 11 with respect to the annular moving inner housing 22.

The annular inner shell 22 is rotatably mounted in the annular top box 21 through a bearing 23, wherein the bearing 23 is provided with a fixed part and a rotating part axially rotating relative to the fixed part, the annular inner shell 22 is fixedly connected with the rotating part, and the fixed part of the bearing 23 is fixedly connected with the top cover assembly 10, so that the annular inner shell 22 is rotatably mounted in the annular top box 21.

The annular inner shell 22 can rotate horizontally about the first axis L to a designated azimuth angle relative to the annular top box 21 under the driving of the driving assembly 24, so as to drive the second camera assembly 12 to rotate horizontally to a designated azimuth angle relative to the first camera assembly 11. When the inner annular housing 22 is rotated to a specified azimuth angle, the drive assembly 24 stops the rotational output to stop the inner annular housing 22 at the specified azimuth angle. However, due to the presence of the transmission backlash, the annular inner housing 22 will shake at the position of the specified azimuth angle within the angular range of one backlash, thereby affecting the imaging effect.

The present embodiment provides a brake assembly 30 in the annular brake assembly, which drives a band-type brake assembly 31 integrally connected with the annular inner shell 22 to hug a brake disc assembly 32 integrally connected with the annular top box 21 by a brake motor 33 in response to an input brake signal or a stop signal of the drive assembly 24, and generates forces in two directions by the hugging, wherein the force generated by the hugging in the circumferential direction of the brake disc assembly 32 keeps the annular inner shell 22 and the second camera assembly 12 at a specified azimuth angle relative to the top cover assembly 10, and the force generated by the hugging in the direction of the first axis L keeps the annular inner shell 22 within the annular top box 21, thereby preventing the second camera assembly 12 mounted on the annular inner shell 22 from being accidentally dropped.

As shown in fig. 2 and 3, the bearing 23 is fixed at the center of the ring-shaped movable top box 21 and protrudes out of the top surface of the ring-shaped movable top box 21, and the center of the ring-shaped movable inner shell 22 is fixedly connected with the rotating part of the bearing 23 so as to be rotatably supported on the ring-shaped movable top box 21;

the top end of the bearing 23 is provided with a bearing end cover 231, and the annular inner shell 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 secured to the bearing cap 231.

Wherein the drive assembly 24 comprises:

a driving motor 241, the driving motor 241 being fixed to the annular inner casing 22 and being offset from the first axis L;

A synchronizing wheel 242, the synchronizing wheel 242 being coaxially fixed to the bearing cap 231;

the synchronous belt 243 is connected between the output shaft of the driving motor 241 and the synchronous wheel 242, so as to drive the annular inner casing 22 to horizontally rotate to a designated azimuth angle relative to the annular top box 21 through the driving motor 241.

In this embodiment, unlike the conventional synchronous belt driving structure, in this embodiment, the synchronous wheel 242 is fixedly connected with the fixing member, namely the bearing 23, that is, the synchronous wheel 242 is fixed, and the driving motor 241 is mounted on the rotatable member, namely the annular inner housing 22, and the driving motor 241 is deviated from the first axis L, the driving assembly 24 in this embodiment operates in such a manner that the driving motor 241 rotates around the synchronous wheel 242 through the synchronous belt 243 when the driving motor 241 outputs a rotational driving force, and thereby drives the annular inner housing 22 fixedly connected thereto to rotate around the bearing 23. The synchronous belt 243 is sleeved on the synchronous wheel 242 in a mode similar to a hula hoop, and can not drive the synchronous wheel 242 to rotate.

Wherein the synchronizing wheel 242 is located between the bearing end cap 231 and the brake disc assembly 32 in the axial direction,

The synchronizing wheel 242 and brake disc assembly 32 are axially secured to the bearing cap 231 by fasteners that simultaneously pass through the synchronizing wheel 242 and brake disc assembly 32.

Because the ring-type movable top box is relatively static, the brake disc assembly and the synchronous wheel are all static. The brake assembly and the driving assembly are fixed on the annular inner shell through screws, and the driving assembly and the synchronous wheel are driven through gears (or synchronous belts). The brake assembly rotates with the inner annular housing when the drive motor is activated. When the brake assembly is started, the brake assembly and the brake disc assembly play a role in braking after acting.

Specifically, as shown in fig. 4, the brake disc assembly 32 includes a brake disc 321 and a brake pad 322, the brake disc 321 being axially fixed to the bearing cap 231, the brake pad 322 covering the brake disc 321 from the top to provide a friction surface extending along the circumferential wall, the brake disc 321 having a stopper portion protruding radially outward.

The brake disc 321 is fixedly connected to the bearing cap 231 and is fixed by means of an axial connection, while the brake pads 322 are adapted to provide a friction surface extending along the circumferential wall. The brake disc 321 and the brake disc 322 provide circumferential direction limitation by radially outwardly protruding limitation portions to avoid relative rotation of the brake disc 321 and the brake disc 322.

Wherein band-type brake subassembly 31 includes:

a brake motor 33;

The centers of the pair of hoops 34 are in cross connection, and are supported on the annular inner shell 22 through a first central shaft 341, and the first end of each hoop 34 is provided with an arc-shaped arm 342 matched with the periphery of the brake disc assembly 32;

The connecting rod assembly 35, the connecting rod assembly 35 is connected with the second end of each hoop 34, so that the second ends of the pair of hoops 34 are driven by the brake motor 33 to move oppositely or reversely, and the pair of arc-shaped arms 342 are driven to move oppositely or reversely, so that the arc-shaped arms 322 are far away from or abutted against the periphery of the brake disc assembly 32;

Wherein the brake motor 33 is configured to drive the link assembly 35 in a radial direction of the bearing 23.

The pair of hoops 34 are placed in a crossed manner, the middle part of each hoop passes through a step shaft on the annular inner shell 22 through a first central shaft 341 to form a scissor arm structure, the second ends of each hoop are respectively connected with the connecting rod assemblies, and the hoops are fixed through pins so as to be driven by the connecting rod assemblies to move in opposite directions or in opposite directions. When the second ends of the pair of hoops 34 are driven by the connecting rod assembly to move in opposite directions, the distance between the second ends of the pair of hoops 34 is reduced, and meanwhile, the first ends of the pair of hoops 34 move in opposite directions, and the distance is increased, so that the first ends of the hoops 34 are separated from the periphery of the brake disc assembly 32, and the holding of the brake disc assembly 32 by the brake assembly 31 is released. When the second ends of the pair of hoops 34 are driven by the connecting rod assembly to move back to back, the distance between the second ends of the pair of hoops 34 is increased, and the first ends of the pair of hoops 34 move toward each other, so that the first ends of the hoops 34 are tightly held by the periphery of the brake disc assembly 32, and the brake of the annular brake assembly is realized by tightly holding the brake disc assembly 32 by the brake assembly 31, so that the annular inner shell 22 and the second camera assembly 12 are kept at a specified azimuth angle relative to the top cover assembly 10.

Wherein the link assembly 35 includes:

one end of the first connecting rod 351 and one end of the second connecting rod 352 are hinged to the second central shaft 354, and the other end of the first connecting rod 351 and the other end of the second connecting rod 352 are respectively hinged to the second ends of the pair of anchor ears 34;

the pull rod 353, the pull rod 353 pulls the first link 351 or the second link 352 to move under the drive of the brake motor 33, so that the included angle between the first link 351 and the second link 352 is changed, and the second ends of the pair of hoops 34 move towards each other or away from each other;

The brake motor 33 has a brake output shaft 331 extending in the direction of the first axis L, and the brake output shaft 331 is connected to the link 353 through a cam 355 to move the link 353 pulling the first link 351 or the second link 352 in the radial direction of the bearing 23 by an elliptical moving track of the cam 355 in the horizontal direction.

Wherein the brake output shaft 331 may be implemented to have a D-shaped cross section to achieve a limit in the rotational direction with the cam 355, the edge of the cam 355 may have a coupling for connecting the pull rod 353, which coupling extends in the direction of the first axis L, wherein the pull rod 353 may have a receiving groove opened in the direction of its extension for receiving the coupling. With this cam structure, the rotation of the brake output shaft 331 can be converted into a linear movement of the link 353 in the radial direction of the bearing 23.

The pull rod 353 is connected to one of the first link 351 and the second link 352 to move the one connected thereto in a radial direction of the bearing 23, thereby changing an included angle between the first link 351 and the second link 352. The distance between the second ends of the pair of hoops 34 is determined by the distance between the distal ends of the first and second links, and when the angle between the first and second links 351, 352 is 180 °, i.e. a straight line is formed, the distance between the distal ends of the first and second links is the greatest, the distance between the second ends of the pair of hoops 34 is the greatest, and the distance between the first ends of the pair of hoops 34 is the smallest, which corresponds to the state in which the brake disc assembly 32 is held tightly by the brake assembly 31. When the angle between the first link 351 and the second link 352 is reduced, the distance between the distal ends of the first link 351 and the second link 352 is reduced, the distance between the second ends of the pair of anchor clamps 34 is minimized, and the distance between the first ends of the pair of anchor clamps 34 is maximized, which corresponds to a state in which the brake disc assembly 32 is released by the brake assembly 31.

It can be seen that when the first link 351 and the second link 352 are formed in a straight line, the pair of arc-shaped arms 342 hugs the disc assembly 32, and the pull rod 353 is moved in a direction perpendicular to the straight line by the brake motor 33 to lock the pair of arc-shaped arms 322 in a position of hugging the disc assembly 32 when the brake motor 33 does not output the driving force.

As is apparent from fig. 5a, when the first link 351 and the second link 352 are formed in a straight line, the pair of arc-shaped arms 342 hugs the brake disc assembly 32, 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, thereby forming a self-locking state. The link assembly is locked in the state shown in fig. 5a in which the pair of arc-shaped arms 342 hugs the brake disc assembly 32 when the brake motor 33 is unexpectedly stopped, and is not accidentally released.

The first central shaft 341 is fixedly connected to the step shaft of the annular inner housing 22, and is used for supporting the hoop 34.

The second central shaft 354 is movably limited to the annular inner shell 12 along the radial direction of the bearing 23 so as to avoid the movement on the square of the first axis L;

Wherein the first central shaft 341 and the second central shaft 354 are located in the same radial direction of the bearing 23.

Wherein the annular inner housing 22 includes:

The limiting groove 221 protrudes from the annular inner shell 22 along the longitudinal direction to receive the bottom end of the second central shaft 333, wherein the limiting groove 121 extends along the radial direction of the bearing 23.

The limiting groove 221 defines a moving direction and a moving range of the second central shaft 354.

The brake motor 33 rotates clockwise to drive the cam 355 to rotate clockwise, the second central shaft 354 is pushed to slide in the limit groove 221 of the annular inner shell by the pull rod 353, the included angle between the first connecting rod 351 and the second connecting rod 352 is driven to be reduced, so that the second ends of the pair of hoops 34 are driven to move oppositely, the first ends of the hoops 34 move around the first central shaft 341 oppositely, the first ends of the hoops 34 are separated from the periphery of the brake disc assembly, and the annular inner shell 22 is separated from the annular top box 21 to realize relative rotation.

The cam 355 is driven to rotate anticlockwise by the brake motor 33, the second central shaft 354 is pushed to slide in the limiting groove 221 of the annular inner shell 22 by the pull rod 353, the included angle between the first connecting rod 351 and the second connecting rod 352 is driven to be increased, so that the first ends of the hoops 34 are driven to move oppositely around the first central shaft 341, the first ends of the hoops 34 are driven to clamp the periphery of the brake disc assembly, and the annular inner shell 11 and the annular top box 21 cannot rotate relatively.

After the band-type brake assembly is held tightly, the hoop 34 and the brake disc assembly 32 are held tightly in an interference mode as a whole, and the brake disc assembly 32 is fixed on the annular moving top box 21 due to the fact that the band-type brake assembly is fixed on the annular moving inner shell 22, so that the braking structure solves the problem of backlash in braking. And the arc action surface of the first end of the anchor ear is in contact interaction with the arc circumferential surface of the brake disc assembly, so that the brake is stable and mild, and the brake friction is large.

As shown in fig. 3 and 4, the method includes:

The first limiting and fixing metal plate 51, wherein the first limiting and fixing metal plate 51 is fixed on the annular inner shell 22, and the connecting rod assembly 53 is limited between the first limiting and fixing metal plate 51 and the annular inner shell 22;

The first limiting fixing metal plate 51 has a first limiting long hole 511, the long diameter direction of the first limiting long hole 511 extends along the radial direction of the bearing 23, and the top end of the second central shaft 354 is received in the first limiting long hole 511.

Further comprises:

The second limiting fixed metal plate 52, the second limiting fixed metal plate 52 is supported above the first limiting fixed metal plate 51, and the pair of anchor clamps 34 are limited between the second limiting fixed metal plate 52 and the annular inner shell 22;

Wherein, the second limiting and fixing metal plate 52 is at least positioned right above the first central shaft 341;

The brake motor 33 is supported by the second spacing fixed metal plate 52.

Wherein the cam 355 is located between the first central axis 341 and the second central axis 354.

According to the embodiment, aiming at the backlash problem, a braking structure is introduced, braking is started after the braking structure moves to a designated position, and self-locking force is provided for keeping braking after power is off. As can be seen from fig. 4, 5a and 5b, the brake assembly in this embodiment utilizes the empty space in the annular moving assembly, the band-type brake assembly is located at one side of the bearing 23, and the driving structures of the band-type brake assembly are integrated in the extension range of the hoop 34, so that the narrow space in the annular moving assembly is fully utilized, and the normal operation of the driving assembly is not affected. Preferably, as shown in fig. 2, the driving assembly 24 and the braking assembly 30 are respectively located at both ends of the bearing 23 in the radial direction, and their operations do not interfere with each other.

Fig. 8 is a schematic structural view of a second embodiment of a brake assembly in the image pickup apparatus of the present invention. Fig. 9 is an exploded schematic view of a second embodiment of a brake assembly in an image pickup apparatus of the present invention.

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

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 one end of the second connecting rod 352 are hinged to a second central shaft 354, and the other end of the first connecting rod 351 and the other end of the second connecting rod 352 are respectively hinged to the second ends of the pair of anchor ears 34;

As shown in fig. 11 and 12, the brake motor 33 has a brake output shaft 331 extending in 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 in the radial direction of the bearing 23.

Unlike the first embodiment shown in fig. 4, 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 central shaft 354 to drive the second central shaft 354 to move along the radial direction of the bearing 23, reducing the complexity of the driving structure compared to the first embodiment.

Wherein the brake output shaft 331 is formed as a screw, and the second central shaft 354 has a screw hole 354a screw-engaged with the brake output shaft 331;

The second center shaft 354 is configured to move horizontally in the radial direction of the bearing 23 without rotating together with the brake output shaft 331 by the rotational drive of the brake output shaft 331.

The top and bottom ends of the second central shaft 354 are both restrained so as not to rotate together with the brake output shaft 331, whereby the rotation of the brake output shaft 331 is converted into the horizontal movement of the second central shaft 354 in the radial direction of the bearing 23 by screw-fitting.

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. Wherein the first central shaft 341 and the second central shaft 354 are located in the same radial direction of the bearing 23.

As shown in fig. 10a and 10b, similarly to the first embodiment, the brake output shaft 331 is directly connected to the second central shaft 354 to move the second central shaft 354 in the radial direction of the bearing 23, thereby changing the angle between the first link 351 and the second link 352. The distance between the second ends of the pair of hoops 34 is determined by the distance between the distal ends of the first and second links, and when the angle between the first and second links 351, 352 is 180 °, i.e. a straight line is formed, the distance between the distal ends of the first and second links is the greatest, the distance between the second ends of the pair of hoops 34 is the greatest, and the distance between the first ends of the pair of hoops 34 is the smallest, which corresponds to the state in which the brake disc assembly 32 is held tightly by the brake assembly 31. When the angle between the first link 351 and the second link 352 is reduced, the distance between the distal ends of the first link 351 and the second link 352 is reduced, the distance between the second ends of the pair of anchor clamps 34 is minimized, and the distance between the first ends of the pair of anchor clamps 34 is maximized, which corresponds to a state in which the brake disc assembly 32 is released by the brake assembly 31.

It can be seen that when the first link 351 and the second link 352 are formed in a straight line, the pair of arc-shaped arms 342 hugs the disc assembly 32, and the pull rod 353 is moved in a direction perpendicular to the straight line by the brake motor 33 to lock the pair of arc-shaped arms 322 in a position of hugging the disc assembly 32 when the brake motor 33 does not output the driving force.

As is apparent from fig. 10a, when the first link 351 and the second link 352 are formed in a straight line, the pair of arc-shaped arms 342 hugs the brake disc assembly 32, 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, thereby forming a self-locking state. The link assembly is locked in the state shown in fig. 10a in which the pair of arc-shaped arms 342 hugs the brake disc assembly 32 when the brake motor 33 is unexpectedly stopped, and is not accidentally released.

The annular inner housing 22 includes:

The limiting groove 221 protrudes from the annular inner shell 22 along the longitudinal direction to receive the bottom end of the second central shaft 333, wherein the limiting groove 121 extends along the radial direction of the bearing 23.

The limiting groove 221 defines a moving direction and a moving range of the second central shaft 354.

The brake motor 33 rotates clockwise to drive the second central shaft 354 to slide in the limit groove 221 of the annular inner shell towards the direction of the bearing 23, and drive the included angle between the first connecting rod 351 and the second connecting rod 352 to be reduced, so as to drive the second ends of the pair of hoops 34 to move in opposite directions, the first ends of the hoops 34 move in opposite directions around the first central shaft 341, the first ends of the hoops 34 are separated from the periphery of the brake disc assembly, and the annular inner shell 22 is separated from the annular top box 21 to realize relative rotation.

The second central shaft 354 is driven to slide away from the bearing 23 in the limit groove 221 of the annular inner shell 22 by the anticlockwise rotation of the brake motor 33, the included angle between the first connecting rod 351 and the second connecting rod 352 is driven to be increased, and accordingly the second ends of the pair of hoops 34 are driven to move oppositely to move the first ends of the hoops 34 around the first central shaft 341 until the first connecting rod 351 and the second connecting rod 352 form a straight line, the first ends of the hoops 34 hold the periphery of the brake disc assembly tightly, and the annular inner shell 11 and the annular top box 21 can not rotate relatively.

After the band-type brake assembly is held tightly, the hoop 34 and the brake disc assembly 32 are held tightly in an interference mode as a whole, and the brake disc assembly 32 is fixed on the annular moving top box 21 due to the fact that the band-type brake assembly is fixed on the annular moving inner shell 22, so that the braking structure solves the problem of backlash in braking. And the arc action surface of the first end of the anchor ear is in contact interaction with the arc circumferential surface of the brake disc assembly, so that the brake is stable and mild, and the brake friction is large.

According to the above technical solution, the present embodiment provides, in the annular brake assembly, a brake assembly 30 which, in response to an input brake signal or a stop signal of the driving assembly 24, drives, by a brake motor 33, a band-type brake assembly 31 integrally connected with the annular inner shell 22 to hug a brake disc assembly 32 integrally connected with the annular top box 21, and generates forces in two directions by the hugging, wherein the forces generated by the hugging in the circumferential direction of the brake disc assembly 32 cause the annular inner shell 22 and the second camera assembly 12 to be held at a specified azimuth angle with respect to the top cover assembly 10, and the forces generated by the hugging in the direction of the first axis L cause the annular inner shell 22 to be held within the annular top box 21, thereby preventing accidental dropping of the second camera assembly 12 mounted on the annular inner shell 22.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and is not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of features, without departing from the technical spirit of the present invention are included in the scope of the present invention.

Claims (16)

1. An image pickup apparatus, comprising:

A cap assembly (10), the cap assembly (10) for mounting the image capture device to a surface, the cap assembly (10) defining a first axis (L) extending in a longitudinal direction;

The annular moving assembly (20), the annular moving assembly (20) is provided with an annular moving top box (21) and an annular moving inner shell (22), the annular moving top box (21) is fixedly connected to the top cover assembly (10), the annular moving inner shell (22) is rotatably arranged in the annular moving top box (21) through a bearing (23) extending along the first axis (L), and the bearing (23) is fixedly connected with the annular moving top box (21);

a first image pickup assembly (11) and a second image pickup assembly (12), wherein the first image pickup assembly (11) and the second image pickup assembly (12) are mounted on the annular inner shell (22);

The brake assembly (30) comprises a band-type brake assembly (31) and a brake disc assembly (32), wherein the band-type brake assembly (31) is arranged on the annular inner shell (22) so as to rotate together with the annular inner shell (22) relative to the annular top box (21), and the brake disc assembly (32) is fixed at the top end of the bearing (23);

The annular moving inner shell (22) can horizontally rotate to a specified azimuth angle relative to the annular moving top box (21) around the first axis (L) under the drive of the driving assembly (24), so as to drive the second camera assembly (12) to horizontally rotate to the specified azimuth angle relative to the first camera assembly (11);

The brake assembly (30) is configured such that the band-type brake assembly (31) is driven by a brake motor (33) to move along the radial direction of the bearing (23) so as to be capable of directly hugging the brake disc assembly (32), a force generated by the hugging in the circumferential direction of the brake disc assembly (32) keeps the annular inner shell (22) and the second camera assembly (12) at the specified azimuth angle, and a force generated by the hugging in the direction of the first axis (L) keeps the annular inner shell (22) in the annular top box (21).

2. The image pickup apparatus as set forth in claim 1, wherein the bearing (23) is fixed to a center of the ring-shaped moving top box (21) and protrudes from a top surface of the ring-shaped moving top box (21), and a center of the ring-shaped moving inner shell (22) is fixedly connected to a rotating portion of the bearing (23) so as to be rotatably supported by the ring-shaped moving top box (21);

The top end of the bearing (23) is provided with a bearing end cover (231), and the annular inner shell (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 secured to the bearing end cap (231).

3. The image pickup apparatus according to claim 2, wherein the driving assembly (24) includes:

a drive motor (241), the drive motor (241) being fixed to the inner annular housing (22) and offset from the first axis (L)

A synchronizing wheel (242), the synchronizing wheel (242) being coaxially fixed to the bearing end cap (231);

the synchronous belt (243) is connected between the output shaft of the driving motor (241) and the synchronous wheel (242), so that the driving motor (241) drives the annular inner moving shell (22) to horizontally rotate to the designated azimuth angle relative to the annular moving top box (21).

4. A camera device according to claim 3, wherein the synchronizing wheel (242) is located axially between the bearing cap (231) and the brake disc assembly (32),

The synchronizing wheel (242) and the brake disc assembly (32) are axially fixed to the bearing end cover (231) through fasteners penetrating through the synchronizing wheel (242) and the brake disc assembly (32) at the same time.

5. A camera device according to claim 3, wherein the brake disc assembly (32) comprises a brake disc (321) and a brake pad (322), the brake disc (321) being axially fixed to the bearing end cap (231), the brake pad (322) covering the brake disc (321) from the top to provide a friction surface extending along the peripheral wall;

the brake disc (321) has a radially outwardly projecting limit portion.

6. An imaging apparatus as claimed in claim 1, wherein the band-type brake assembly (31) comprises:

A brake motor (33);

The centers of the hoops (34) are connected in a cross mode, the hoops are supported on the annular inner shell (22) through a first central shaft (341), and the first end of each hoop (34) is provided with an arc-shaped arm (342) matched with the periphery of the brake disc assembly (32);

The connecting rod assemblies (35) are connected with the second ends of the hoops (34) so as to drive the second ends of the hoops (34) to move oppositely or reversely under the drive of the brake motor (33) to drive the arc-shaped arms (342) to move reversely or reversely, and the arc-shaped arms (322) are far away from or abutted against the periphery of the brake disc assembly (32);

wherein the brake motor (33) is configured to drive the connecting rod assembly (35) in a radial direction of the bearing (23).

7. The image pickup apparatus according to claim 6, wherein the link assembly (35) includes:

One end of the first connecting rod (351) and one end of the second connecting rod (352) are hinged to a second central shaft (354), and the other end of the first connecting rod (351) and one end of the second connecting rod (352) are respectively hinged to the second ends of the pair of anchor hoops (34);

The pull rod (353) pulls the first connecting rod (351) or the second connecting rod (352) to move under the drive of the brake motor (33), so that the included angle between the first connecting rod (351) and the second connecting rod (352) is changed, and the second ends of the pair of anchor hoops (34) are moved towards each other or away from each other;

The brake motor (33) is provided with a brake output shaft (331) extending along the direction of the first axis (L), the brake output shaft (331) is connected with the pull rod (353) through a cam (355), so that the pull rod (353) is driven to move along the radial direction of the bearing (23) through the elliptical moving track of the cam (355) in the horizontal direction, and the first link (351) or the second link (352) is pulled.

8. The imaging apparatus according to claim 7, wherein the pair of arcuate arms (342) hugs the brake disc assembly (32) when the first link (351) and the second link (352) are formed in a straight line,

The pull rod (353) moves along the 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) at the position of holding the brake disc assembly (32) when the brake motor (33) does not output driving force.

9. The image pickup apparatus according to claim 7, wherein the first center shaft (341) is fixedly connected to the annular inner housing (22);

the second central shaft (354) is movably limited on the annular inner shell (12) along the radial direction of the bearing (23);

Wherein the first central shaft (341) and the second central shaft (354) are located in the same radial direction of the bearing (23).

10. The image pickup apparatus according to claim 7, comprising:

The first limiting and fixing metal plate (51), the first limiting and fixing metal plate (51) is fixed on the annular inner shell (22), and the connecting rod assembly (53) is limited between the first limiting and fixing metal plate (51) and the annular inner shell (22);

The first limiting and fixing sheet metal (51) is provided with a first limiting long hole (511), the long diameter direction of the first limiting long hole (511) extends along the radial direction of the bearing (23), and the top end of the second central shaft (354) is received in the first limiting long hole (511).

11. The image pickup apparatus according to claim 7, wherein the annular inner housing (22) includes:

and a limiting groove (221), wherein the limiting groove (221) protrudes from the annular inner shell (22) along the longitudinal direction so as to receive the bottom end of the second central shaft (333), and the limiting groove (121) extends along the radial direction of the bearing (23).

12. The image pickup apparatus according to claim 10, comprising:

The second limiting and fixing metal plate (52), the second limiting and fixing metal plate (52) is supported above the first limiting and fixing metal plate (51), and the pair of anchor clamps (34) are limited between the second limiting and fixing metal plate (52) and the annular inner shell (22);

wherein the second limiting and fixing sheet metal (52) is at least positioned right above the first central shaft (341)

The braking motor (33) is supported on the second limiting and fixing metal plate (52).

13. The image pickup apparatus according to claim 7, wherein the cam (355) is located between the first center axis (341) and the second center axis (354).

14. The imaging apparatus according to claim 6, wherein the link assembly (35) includes a first link (351) and a second link (352), one end of the first link (351) and one end of the second link (352) are hinged to a second central shaft (354), and the other end of the first link and the second link are respectively hinged to second ends of a pair of anchor ears (34);

The brake motor (33) is provided with a brake output shaft (331) extending along the radial direction of the bearing (23), and the brake output shaft (331) is connected with the second central shaft (354) so as to drive the second central shaft (354) to move along the radial direction of the bearing (23).

15. The image pickup apparatus according to claim 14, wherein the brake output shaft (331) is formed as a screw, and the second center shaft (354) has a screw hole (354 a) screw-fitted with the brake output shaft (331);

The second center shaft (354) is configured to move horizontally in a radial direction of the bearing (23) without rotating together with the brake output shaft (331) under rotational drive of the brake output shaft (331).

16. The braking device for a cyclic assembly according to claim 14, characterized in that the first central shaft (341) is fixedly connected to the cyclic inner housing (22);

the second central shaft (354) is movably limited on the annular inner shell (22) along the radial direction of the bearing (23);

Wherein the first central shaft (341) and the second central shaft (354) are located in the same radial direction of the bearing (23).