CN209925901U

CN209925901U - Gear transmission device

Info

Publication number: CN209925901U
Application number: CN201920251271.2U
Authority: CN
Inventors: 郭文龙; 周平; 高嵩
Original assignee: Tianjin Josen Technology Co Ltd
Current assignee: Tianjin Josen Technology Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2020-01-10
Anticipated expiration: 2029-02-28

Abstract

The utility model discloses a gear transmission device, wherein a camera rotating pair, a first straight gear and a face gear are arranged in the gear transmission device; the camera revolute pair comprises a rotary component, a rotary shaft and a U-shaped bracket; the end face gear is arranged on the rotating component, and the rotating shaft vertically penetrates through the circle center of the circumference where the end face gear is located; the first straight gear is nested on a rotor of the vertical motor and is meshed with the end face gear; the stator of the vertical motor and the U-shaped bracket are kept relatively static. The utility model discloses be applied to among the surveillance camera machine for drive the camera core and rotate on level and two vertical directions. Compared with the prior art, the problems of low space utilization rate, complex structure and high assembly requirement in the prior art are effectively solved.

Description

Gear transmission device

Technical Field

The utility model relates to a surveillance camera machine field, concretely relates to gear drive.

Background

In recent years, the fields of security monitoring, video conferences, intelligent home and the like are rapidly developed, the camera is used everywhere, gear transmission is a common transmission mode in the devices, and the common gear modes comprise gear transmission mechanisms such as a straight gear, a bevel gear, a worm gear and the like. The concrete structure is as follows: a pinion (which can be a straight gear, a bevel gear or a worm) is fixed at the shaft end of the motor and is meshed with another gear (which correspondingly is a straight gear, a bevel gear or a worm gear) to form a set of gear transmission mechanism. When the direction of the rotating shaft does not need to be changed, a straight gear and a straight gear are adopted for meshing, and when the direction of the transmission shaft needs to be changed, a bevel gear and a bevel gear are used for meshing, or a worm and a worm wheel are used for meshing, and the like. In the above-mentioned gear transmission form, the transmission structure in which the spur gear is engaged with the spur gear often occupies a large space. The bevel gear and the bevel gear are meshed to change the direction of the transmission shaft to optimize the layout of the structural space, but the tooth form of the bevel gear is in a center divergent form, and the gear has higher requirements on the precision of the gear and the assembly precision. The worm and the worm wheel meshed transmission mechanism can also change the direction of the transmission shaft, but because the rigidity of the worm is poor compared with the long shaft, a pivot needs to be added at the shaft end, so that the structure is complex, the occupied space is large, and the transmission efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve foretell technical problem, and provide a gear transmission.

The utility model discloses a realize according to following technical scheme.

A gear transmission device is provided with a camera rotating pair, a first straight gear and an end face gear; the camera revolute pair comprises a rotary component, a rotary shaft and a U-shaped bracket; the end face gear is arranged on the rotating component, and the rotating shaft vertically penetrates through the circle center of the circumference where the end face gear is located; the first straight gear is nested on a rotor of the vertical motor and is meshed with the end face gear; the stator of the vertical motor and the U-shaped bracket are kept relatively static.

Further, the vertical motor is installed on a first motor support, and the first motor support and the U-shaped support are fastened together through screws.

Further, the transmission device is arranged in the monitoring camera; the monitoring camera comprises a shell, a bottom cover and a base, wherein the vertical motor and the U-shaped bracket are both arranged on the base; the base is movably connected with the second motor support through a bearing; an inner gear ring is arranged in the base.

Furthermore, a horizontal motor is arranged on a second motor support, a second straight gear meshed with the inner gear ring is nested on a rotor of the horizontal motor, and the second motor support, the bearing and the base form a revolute pair.

Furthermore, a camera movement is arranged in the rotating component; the horizontal motor drives the second straight gear to rotate, so as to drive the second motor bracket to do circular motion on the base and further drive the rotating component to rotate horizontally; the vertical motor drives the first straight gear to rotate, and then the rotating member is driven to rotate in the vertical direction through the end face gear.

Further, the shell, the bottom cover and the base of the monitoring camera are fixed together through screws; the rotating component is also provided with a spherical shell; the camera revolute pair is movably connected with the spherical shell through a rotary shaft, and the rotary shaft is matched with a shaft hole in the U-shaped support to form the revolute pair.

The utility model has the advantages and beneficial effects that:

the utility model discloses be applied to among the surveillance camera machine for drive the camera core and rotate on level and two vertical directions. Compared with the prior art, the problems of low space utilization rate, complex structure and high assembly requirement in the prior art are effectively solved. The space occupied by the mechanism is improved under the condition of the same output torque, and the assembly precision requirement of the gear is improved. Has good application prospect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of a camera mounted with the present invention;

fig. 3 is a schematic view of the installation position of the middle face gear in the monitoring camera according to the present invention.

Wherein, 1, a shell; 2. a bottom cover; 3. a base; 4. a second motor support; 5. a bearing; 6. an inner gear ring; 7. a first motor bracket; 8. a horizontal motor; 9. a vertical motor; 10. a second spur gear; 11. a decorative cover; 12. a first straight gear; 13. a first spherical shell; 14. a second spherical shell; 15. a camera movement; a U-shaped bracket; 17. a face gear.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1-3, a gear transmission device is provided with a camera rotating pair, a first straight gear 12 and an end face gear 17; the camera revolute pair comprises a rotating member, a rotating shaft and a U-shaped bracket 16; the face gear 17 is arranged on the rotating component, and the rotating shaft vertically penetrates through the circle center of the circumference where the face gear 17 is located; the first straight gear 12 is nested on the rotor of the vertical motor 9 and is meshed with the end face gear 17; the stator of the vertical motor 9 remains relatively stationary with the U-shaped bracket 16.

The vertical motor 9 is arranged on the first motor bracket 7, and the first motor bracket 7 and the U-shaped bracket 16 are fastened together through screws.

The transmission device is arranged in the monitoring camera; the monitoring camera comprises a shell 1, a bottom cover 2 and a base 3, wherein a vertical motor 9 and a U-shaped support 16 are arranged on the base 3; the base 3 is movably connected with a second motor bracket 4 through a bearing 5; an inner gear ring 6 is arranged inside the base 3.

A horizontal motor 8 is arranged on the second motor support 4, a second straight gear 10 meshed with the inner gear ring 6 is nested on a rotor of the horizontal motor 8, and the second motor support 4, the bearing 5 and the base 3 form a revolute pair.

A camera movement 15 is mounted in the rotating member; the horizontal motor 8 drives the second straight gear 10 to rotate, so as to drive the second motor bracket 4 to do circular motion on the base 3, and further drive the rotating component to rotate horizontally; the vertical motor 9 drives the first spur gear 12 to rotate, which in turn drives the rotating member to rotate in the vertical direction via the face gear 17.

The shell 1, the bottom cover 2 and the base 3 of the monitoring camera are fixed together through screws; the rotating component is also provided with a spherical shell; the camera revolute pair is movably connected with the spherical shell through a rotary shaft, and the rotary shaft is matched with a shaft hole in the U-shaped support 16 to form a revolute pair.

The first embodiment is as follows:

the bearings 5 are deep groove ball bearings of 6705 specification, the number of the bearings is two, the bearings are stacked up and down, the inner ring is fixed with the second motor support 4, and the outer ring is fixed with the base 3.

The base 3 is made of plastic, a bearing mounting groove is formed in the base, and the two bearings 5 are fixed through buckles;

the second motor support 4 is made of plastic, is externally provided with a bearing mounting groove and is fixed with the 2 bearings 5 through buckles;

a second straight gear 10 is fixed on a shaft of the horizontal motor 8 in an interference fit mode, and the second straight gear 10 is meshed with the inner gear ring 6 in the base to form primary gear transmission. The horizontal motor 8 transmits torque through the transmission of the first-stage gear, so that the second motor support 4 drives the horizontal motor 8 and other structures (namely, a mechanism statically connected with the second motor support 4) to horizontally rotate relative to the shell 1.

The vertical motor 9 and the first motor bracket 7 are fixed together through screws, and a first straight gear 12 is fixed on a rotor of the vertical motor 9 in an interference fit manner.

The spherical shell comprises a first spherical shell 13 and a second spherical shell 14, and the bodies of the two parts are of hemispherical structures made of plastic materials; the first spherical shell 13 is provided with a button position, the second spherical shell 14 is provided with a clip, and the first spherical shell 13 and the second spherical shell 14 are fixed together and wrap the camera movement 15 through the clip and the button. The two sides of the spherical shell are also provided with decorative covers for blocking the rotating shaft and the U-shaped bracket 16, and the decorative covers do not rotate when the spherical shell rotates vertically.

When the device is used for driving the monitoring camera to change the view field, if the horizontal motor 8 is electrified to rotate, the torque is transmitted to the second straight gear 10; the second straight gear 10 enables the camera movement 15 and all mechanisms statically connected with the second motor bracket 4 in the camera to horizontally rotate through a primary gear transmission mechanism; if the vertical motor 9 is electrified to rotate, the torque is transmitted to the first straight gear 12; the first straight gear 12 vertically rotates the camera movement 15 through a primary gear transmission mechanism.

Claims

1. A gear transmission device is characterized in that a camera rotating pair, a first straight gear (12) and an end face gear (17) are arranged in the gear transmission device; the camera revolute pair comprises a rotary component, a rotary shaft and a U-shaped bracket (16); the face gear (17) is arranged on the rotating component, and the rotating shaft vertically penetrates through the circle center of the circumference where the face gear (17) is located; the first straight gear (12) is nested on a rotor of the vertical motor (9) and is meshed with the end face gear (17); the stator of the vertical motor (9) and the U-shaped bracket (16) are kept relatively static.

2. A gear transmission according to claim 1, characterized in that the vertical motor (9) is mounted on a first motor bracket (7), the first motor bracket (7) and the U-shaped bracket (16) being fastened together by means of screws.

3. A gear assembly as claimed in claim 1, wherein the assembly is mounted in a surveillance camera; the monitoring camera comprises a shell (1), a bottom cover (2) and a base (3), wherein a vertical motor (9) and a U-shaped support (16) are arranged on the base (3); the base (3) is movably connected with the second motor support (4) through a bearing (5); an inner gear ring (6) is arranged in the base (3).

4. A gear transmission unit according to claim 3, characterized in that the second motor support (4) is provided with a horizontal motor (8), a second spur gear (10) meshed with the inner gear ring (6) is nested on the rotor of the horizontal motor (8), and the second motor support (4), the bearing (5) and the base (3) form a revolute pair.

5. A gear transmission according to claim 4, characterised in that a camera movement (15) is mounted in the rotary member; the horizontal motor (8) drives the second straight gear (10) to rotate, so that the second motor bracket (4) is driven to do circular motion on the base (3), and the rotating component is driven to rotate horizontally; the vertical motor (9) drives the first straight gear (12) to rotate, and then the end face gear (17) drives the rotating component to rotate in the vertical direction.

6. A gear transmission according to claim 3, wherein the housing (1), the bottom cover (2) and the base (3) of the monitoring camera are fixed together by screws; the rotating component is also provided with a spherical shell; the camera revolute pair is movably connected with the spherical shell through a rotating shaft, and the rotating shaft is matched with a shaft hole in the U-shaped support (16) to form the revolute pair.