CN218720427U

CN218720427U - Cloud platform camera

Info

Publication number: CN218720427U
Application number: CN202222756346.7U
Authority: CN
Inventors: 林建成; 王跃拼
Original assignee: Xiamen Xingzhong Wulian Technology Co ltd
Current assignee: Xiamen Xingzhong Wulian Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-24
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to a pan-tilt camera, including camera module, pan-tilt module and first drive module, pan-tilt module rigid set, camera module rotatable coupling in pan-tilt module, first drive module is used for the drive camera module is relative pan-tilt module rotates, first drive module includes motor and drive mechanism, drive mechanism is including a pair of helical gear of engaged with, at least one helical gear in a pair of helical gear be axial mobilizable, still include the elastic component, the elastic component is used for axial mobilizable the axial elastic force is applyed to the helical gear, so that a pair of helical gear keeps inseparable meshing in order to eliminate the transmission clearance. The utility model discloses a transmission clearance among the gear drive system has been eliminated to the gap eliminating transmission structure that helical gear and elastic component combine to realize to the accuracy that cloud platform camera image snatched after the angle rotation has been improved.

Description

Cloud platform camera

Technical Field

The utility model relates to a camera technical field, concretely relates to camera rotation driving module's crack transmission structure that disappears in cloud platform camera.

Background

The pan-tilt camera mainly comprises a camera module and a pan-tilt module, wherein the pan-tilt module is fixedly arranged, the camera module is rotatably arranged on the pan-tilt module, a driving module drives the camera module to rotate relative to the pan-tilt module so as to adjust the shooting range of the camera module, the driving module generally adopts belt transmission in the prior art, however, a hybrid stepping motor is often needed to be matched for avoiding the transmission clearance in a transmission system through the belt transmission, the transmission life of the belt transmission is lower, a wider belt is needed for prolonging the service life, so that a larger design space is reserved, and the transmission system brings higher material cost and maintenance cost; in addition, a part of products in the market at present adopt a transmission scheme of matching gears with speed reduction synchronous motors in order to reduce cost and design size, and the scheme also has the defect that the reserved transmission gap is designed between the gears, and the problems of delay, poor accuracy and the like of the pan-tilt camera during image capture can be caused by the part of movable gap.

SUMMERY OF THE UTILITY MODEL

Therefore, to the above problem, the utility model provides a configuration optimization's cloud platform camera to eliminate the gear drive clearance among drive module's the drive mechanism.

The utility model discloses a following technical scheme realizes:

the utility model provides a pan-tilt camera, including camera module, pan-tilt module and a drive module, pan-tilt module rigid set, camera module rotatable coupling in pan-tilt module, a drive module is used for the drive camera module is relative pan-tilt module rotates, a drive module includes motor and drive mechanism, drive mechanism is including a pair of helical gear of engaged with, a pair of helical gear in at least one helical gear be axial mobilizable, still include the elastic component, the elastic component is used for axial mobilizable the axial elastic force is applyed to the helical gear, so that a pair of helical gear keeps inseparable meshing in order to eliminate the transmission clearance.

Wherein, preferably, the pair of bevel gears comprises a driving first bevel gear and a driven second bevel gear, and the first bevel gear and the second bevel gear are axially movable; the number of the elastic pieces is two, namely a first elastic piece and a second elastic piece; the first elastic member and the second elastic member are respectively arranged at two ends of the pair of bevel gears in the axial direction and respectively act on the first bevel gear and the second bevel gear so as to apply elastic forces with opposite directions to the first bevel gear and the second bevel gear in the axial direction and keep the first bevel gear and the second bevel gear in tight engagement.

Preferably, the camera module comprises a rotating base and a camera body, the motor and the transmission mechanism are arranged on the rotating base, the holder module is provided with a cavity, and the rotating base is rotatably inserted into the cavity.

Wherein, preferably, rotating base is including being used for the support motor and drive mechanism's support, the support includes fixed connection's first bearing and second bearing, and the definition the camera module is in the top of cloud platform module, first bearing and second bearing interval setting up one on the other, motor fixed connection be in first bearing upside, the output shaft of motor passes first bearing downwardly extending, first helical gear and second helical gear are installed in the interval space of first bearing and second bearing, first helical gear axial movably shaft hub connection is in on the output shaft.

Preferably, the second supporting seat is provided with a lower groove for accommodating the first helical gear and the second helical gear.

Preferably, the first elastic member is a pressure spring, one end of the pressure spring acts on the motor or the first supporting seat, and the other end of the pressure spring acts on the first helical gear, and the lower end of the output shaft is fixedly connected with a first screw to limit the first helical gear downwards.

The driven gear shaft and the bearing are preferably further included, a through hole is formed in the second supporting seat, the outer ring of the bearing is fixedly connected in the through hole, the driven gear shaft is fixedly connected with the inner ring of the bearing, and the second helical gear is axially movably connected with the driven gear shaft in a shaft hub mode.

Preferably, the second elastic element is a compression spring with one end acting on the bearing and the other end acting on the second helical gear, and the first support seat forms an upward limit to the second helical gear.

Preferably, the driven gear shaft penetrates out of the bearing downwards, a third gear is connected to a shaft section of the driven gear shaft, which penetrates out of the bearing downwards, in a shaft hub manner, and an internal gear meshed with the third gear is fixedly arranged on the holder module.

Preferably, the third gear is axially movably shaft-hub connected to the driven gear shaft, and a second screw is fixedly connected to the lower end of the driven gear shaft to limit the third gear downwards.

The utility model discloses following beneficial effect has: the gap eliminating transmission structure realized by combining the bevel gear and the elastic piece eliminates the transmission gap in the gear transmission system, thereby improving the image capturing accuracy of the pan-tilt camera after the angle rotation.

Drawings

FIG. 1 is a perspective view of a pan-tilt camera according to an embodiment;

FIG. 2 is a cross-sectional view of the pan-tilt camera in the embodiment;

FIG. 3 is a schematic view showing an assembled structure of a first driving module and a support of the pan and tilt camera according to the embodiment;

FIG. 4 is a schematic view of a first drive module and a support of the pan and tilt camera according to an embodiment of the present invention, shown in a preliminary exploded view;

fig. 5 is a schematic diagram of a first driving module and a support of the pan-tilt camera according to the embodiment in a further exploded structure.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1-5, as the preferred embodiment of the present invention, a pan/tilt head camera is provided, including camera module 1 and pan/tilt head module 2, pan/tilt head module 2 is fixed and immovable, camera module 1 specifically includes camera body 11 and rotating base 12, camera body 11 is rotatable connected on rotating base 12, rotating base 12 is again rotatable connected in pan/tilt head module 2, be equipped with first drive module 3 and second drive module (not shown in the figure) in the pan/tilt head camera, rotation of first drive module 3 drive rotating base 12 relative to pan/tilt head module 2 is in order to realize a rotational degree of freedom of camera body 11, rotation of second drive module drive camera body 11 relative to rotating base 12 is in order to realize another rotational degree of freedom of camera body 11. For convenience of description in this embodiment, it is defined that the camera module 1 is relatively located above the pan/tilt head module 2, and the pan/tilt head module 2 is relatively located below the camera module 1.

The first driving module 3 specifically includes a motor 33 and a transmission mechanism, both the motor 33 and the transmission mechanism are installed on the rotating base 12, the pan-tilt module 2 is provided with a cavity 20, and the rotating base 12 is rotatably inserted into the cavity 20. Installation space can be practiced thrift through so setting up, makes the space occupation of first drive module 3 obtain reducing, has reduced the appearance height of cloud platform camera.

In this embodiment, the transmission mechanism is a gear transmission mechanism, an internal gear (not labeled in the figure) is fixed on the pan/tilt module 2, and a transmission end gear of the gear transmission mechanism is engaged with the internal gear, so as to realize that the motor 33 drives the camera module 1 to rotate. Specifically, the gear transmission mechanism includes a first helical gear 31, a second helical gear 32, a driven gear shaft 37 and a third gear 39, the motor 33 includes an output shaft 330 extending downward, the first helical gear 31 is shaft-hub-connected to the output shaft 330, the second helical gear 32 is meshed with the first helical gear 31, and the third gear 39 and the second helical gear 32 are coaxially connected through the driven gear shaft 37. The third gear 39 is engaged with the internal gear as the above-described transmission end gear.

In the present embodiment, a first compression spring 34 (as a first elastic member) and a second compression spring 36 (as a second elastic member) are further provided, wherein the first helical gear 31 is axially movable on the output shaft 330, the second helical gear 32 is also axially movable on the driven gear shaft 37, the first compression spring 34 and the second compression spring 36 are respectively disposed at two axial ends of a pair of helical gears, namely the first helical gear 31 and the second helical gear 32, and act on the first helical gear 31 and the second helical gear 32, respectively, so as to apply elastic forces in opposite directions to each other in the axial direction to the first helical gear 31 and the second helical gear 32, so as to make tooth flanks of meshing teeth between the first helical gear 31 and the second helical gear 32 abut against each other, and eliminate a transmission gap between the first helical gear 31 and the second helical gear 3 through tight meshing between the first helical gear 31 and the second helical gear 32, thereby ensuring accuracy of image capturing after angular rotation of the pan/tilt head.

In other embodiments, only one of the first helical gear 31 and the second helical gear 32 may be axially movable, and an elastic member is also used to provide an axial thrust for the axially movable helical gear, but in this embodiment, both the first helical gear 31 and the second helical gear 32 are axially movable, and are engaged with each other, so that the backlash elimination effect is better, and the reliability is higher.

The axially movable hub connection of the first helical gear 31 and the second helical gear 32 on the respective gear shafts can be realized by the existing hub connection means in the field, such as a molded connection or a keyed connection.

The first pressure spring 34 may directly act on an end surface of the first helical gear 31, that is, one end of the first pressure spring 34 may abut against the end surface of the first helical gear 31. More preferably, a stepped hole is formed in the first bevel gear 31, and one end of the first compression spring 34 extends into and abuts against the stepped hole, thereby improving the reliability of the assembly and force transmission between the first compression spring 34 and the first bevel gear 31. The matching structure of the second compression spring 36 and the second bevel gear 32 is similar to the matching structure of the first compression spring 34 and the first bevel gear 31, and the description is omitted here.

The rotating base 12 comprises a support 120 for supporting the motor 33 and the transmission mechanism, the support 120 further comprises a first support 121 and a second support 122 fixedly connected to each other, the first support 121 and the second support 122 are arranged at an interval from each other, the motor 33 is fixedly connected to the upper side of the first support 121, the output shaft 330 of the motor 33 extends downwards through the first support 121, and the first bevel gear 31 and the second bevel gear 32 are mounted in the interval between the first support 121 and the second support 122. The second supporting seat 122 is provided with a lower groove 1220 for accommodating the first bevel gear 31 and the second bevel gear 32, so that the structure compactness can be effectively improved, and the overall height of the pan-tilt camera is reduced.

One end of the first pressure spring 34 acts on the motor 33 or the first supporting seat 121, and the other end acts on the first bevel gear 31, and the lower end of the output shaft 330 is fixedly connected with a first screw 35 to form a downward limit for the first bevel gear 31. The first screw 35 is used for limiting the downward position of the first bevel gear 31, so that the device is reliable and simple and is beneficial to installation and manufacture. The second supporting seat 122 is provided with a through hole 1221, an outer ring of a bearing 38 is fixedly connected in the through hole 1221, the driven gear shaft 37 is fixedly connected with an inner ring of the bearing 38, one end of a second pressure spring 36 acts on the bearing 38, the other end of the second pressure spring acts on the second helical gear 32, and the first supporting seat 121 forms an upward limit for the second helical gear 32. The bearing 38 is provided to support the driven gear shaft 37 and the second bevel gear 32, and to ensure the stability of the rotation of the second bevel gear 32. The upward limit of the second bevel gear 32 formed by the first supporting seat 121 is also reliable and simple, and is beneficial to installation and manufacture.

The driven gear shaft 37 passes downward through the bearing 38, and a third gear 39 is hub-connected to a shaft section of the driven gear shaft 37 passing downward through the bearing 38. The third gear 39 is axially movably hub-connected to the driven gear shaft 37, and a second screw 310 is fixedly connected to the lower end of the driven gear shaft 37 to limit the downward position of the third gear 39. The third gear 39 engages with an internal gear fixedly arranged on the pan/tilt head module 2 to realize a complete transmission path.

The embodiment is described by taking a case that the rotation axis of the rotating base 12 is vertical and all the gear axes are vertical as an example, but the corresponding anti-backlash transmission structure realized by the helical gear and the elastic member can also be applied to the pan-tilt camera with the rotation axis of the rotating base horizontal, and there is no technical obstacle for those skilled in the art.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a pan-tilt camera, includes camera module, pan-tilt module and first drive module, the pan-tilt module is fixed motionless to be set up, camera module rotatable coupling in pan-tilt module, first drive module is used for the drive camera module is relative pan-tilt module rotates its characterized in that: the first driving module comprises a motor and a transmission mechanism, the transmission mechanism comprises a pair of meshed helical gears, at least one of the helical gears is axially movable, and the first driving module further comprises an elastic piece, wherein the elastic piece is used for exerting axial elastic force on the axially movable helical gears, so that the helical gears are kept in tight meshing to eliminate a transmission gap.

2. A pan-tilt camera according to claim 1, characterized in that: the pair of bevel gears comprises a driving first bevel gear and a driven second bevel gear, and the first bevel gear and the second bevel gear are axially movable; the number of the elastic pieces is two, namely a first elastic piece and a second elastic piece; the first elastic member and the second elastic member are respectively arranged at two ends of the pair of bevel gears in the axial direction and respectively act on the first bevel gear and the second bevel gear so as to apply elastic forces with opposite directions to the first bevel gear and the second bevel gear in the axial direction and keep the first bevel gear and the second bevel gear in tight engagement.

3. A pan-tilt camera according to claim 2, characterized in that: the camera module comprises a rotating base and a camera body, wherein the motor and the transmission mechanism are arranged on the rotating base, the holder module is provided with a cavity, and the rotating base is rotatably inserted into the cavity.

4. A pan-tilt camera according to claim 3, wherein: rotating base is including being used for the support motor and drive mechanism's support, the support includes fixed connection's first bearing and second bearing, definition the camera module is in the top of cloud platform module, first bearing and second bearing interval setting up one on the other, motor fixed connection be in first bearing upside, the output shaft of motor passes first bearing downwardly extending, first helical gear and second helical gear are installed in the interval space of first bearing and second bearing, first helical gear axial movably shaft hub connection is in on the output shaft.

5. A pan-tilt camera according to claim 4, characterized in that: and the second supporting seat is provided with a lower groove for accommodating the first helical gear and the second helical gear.

6. A pan-tilt camera according to claim 4, characterized in that: the first elastic part is a pressure spring with one end acting on the motor or the first supporting seat and the other end acting on the first helical gear, and the lower end of the output shaft is fixedly connected with a first screw to limit the first helical gear downwards.

7. A pan-tilt camera according to claim 4, characterized in that: the bearing comprises a first bearing seat and a second bearing seat, and is characterized by further comprising a driven gear shaft and a bearing, wherein a through hole is formed in the second bearing seat, an outer ring of the bearing is fixedly connected in the through hole, the driven gear shaft is fixedly connected with an inner ring of the bearing, and the second helical gear is axially movably connected with a shaft hub on the driven gear shaft.

8. The pan-tilt camera according to claim 7, wherein: the second elastic part is a pressure spring with one end acting on the bearing and the other end acting on the second helical gear, and the first supporting seat forms upward limit on the second helical gear.

9. The pan-tilt camera according to claim 7, wherein: the driven gear shaft penetrates out of the bearing downwards, a third gear is connected to a shaft hub on the shaft section of the driven gear shaft which penetrates out of the bearing downwards, and an internal gear meshed with the third gear is fixedly arranged on the holder module.

10. Pan-tilt camera according to claim 9, characterized in that: the third gear is axially movably connected with the driven gear shaft in a shaft hub mode, and the lower end of the driven gear shaft is fixedly connected with a second screw to limit the third gear downwards.