Holder

Abstract

The holder comprises a holder body, a support, a first motor, a second motor, a camera, a main control module and a positioning assembly, the first motor and the main control module are both arranged on the holder body, the first motor comprises a first rotor and a first stator, the support is connected with the first rotor, the second motor is arranged on the support, and the camera is arranged on the first rotor. The first motor comprises a first mover and a first stator, the camera is rotatably connected with the support, the second motor comprises a second mover and a second stator, the camera is connected with the second mover, the positioning assembly comprises a sensing part and an encoder, the sensing part is arranged on the first mover and / or the second mover, the encoder is arranged on the first stator and / or the second stator, and the encoder is electrically connected with the main control module. According to the cradle head, the motor is directly connected with the motor load end, and the motor is provided with the encoder, so that the transmission efficiency of the motor is high, the positioning control effect is better, and the positioning precision of the cradle head is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of pan / tilt equipment, in particular to a pan / tilt. Background Art

[0002] As we all know, electric pan-tilt heads are widely used in monitoring equipment. The pan-tilt head can drive the monitoring camera to rotate at a fixed point so that the monitoring camera can obtain a larger monitoring range. At least one motor is arranged on the pan-tilt head to realize the fixed-point rotation function by driving the monitoring camera through the motor.

[0003] However, the existing gimbal achieves mechanical rotation through a stepper motor, double bearings and an oil seal structure, which results in the positioning accuracy of the gimbal being limited by the accuracy of the stepper motor, and there is a certain friction between the driving end of the stepper motor and the motor load, which affects the accuracy of the positioning control of the stepper motor, resulting in the low accuracy of the positioning pause of the existing gimbal. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pan head to solve the problem of low positioning and stopping accuracy of the existing pan heads.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a gimbal, which includes a gimbal body, a bracket, a first motor, a second motor, a camera, a main control module and a positioning component, the first motor and the main control module are both arranged on the gimbal body, the first motor includes a first mover and a first stator, the bracket is connected to the first mover, the second motor is arranged on the bracket, the camera is rotatably connected to the bracket, the second motor includes a second mover and a second stator, the camera is connected to the second mover, the positioning component includes a sensor and an encoder, the sensor is arranged on the first mover and / or the second mover, the encoder is arranged on the first stator and / or the second stator, and the encoder is electrically connected to the main control module.

[0006] Furthermore, the bracket is provided with a first connecting shaft, and the first connecting shaft is connected to the first mover.

[0007] Furthermore, a first connecting hole is provided on the first mover, a first through hole is opened on the gimbal body, the first connecting shaft passes through the first through hole, and the first connecting shaft is arranged in the first connecting hole.

[0008] Furthermore, the bracket is provided with a receiving cavity, the second motor is arranged in the receiving cavity, and the first connecting shaft is provided with a threading hole which passes through the receiving cavity.

[0009] Furthermore, it also includes a first bearing, which is arranged in the through hole.

[0010] Furthermore, the bracket is provided with a first supporting portion and a second supporting portion which are arranged opposite to each other, the camera is arranged between the first supporting portion and the second supporting portion, and the second motor is arranged on the first supporting portion.

[0011] Furthermore, the camera is provided with a second connecting shaft, and the second connecting shaft is connected to the second mover.

[0012] Furthermore, the second mover is provided with a second connecting hole, the first supporting portion is provided with a second through hole, the connecting shaft passes through the second through hole, and the connecting shaft is arranged in the second connecting hole.

[0013] Furthermore, it also includes a second bearing, which is arranged in the second through hole.

[0014] Furthermore, the axial direction of the first mover and the axial direction of the second mover are arranged perpendicular to each other.

[0015] The beneficial effects of the present invention are as follows: an encoder is arranged on the first / second stator of the pan / tilt platform described in the present invention, and an induction component is arranged on the first / second mover, so that the first / second motor has its own encoder; in addition, the bracket of the pan / tilt platform is directly connected to the first mover of the first motor, and the camera is directly connected to the second mover of the second motor, so that contactless transmission and positioning are achieved between the bracket and the first motor, and contactless transmission and positioning are achieved between the camera and the second motor, the friction resistance between the motor and the load end of the motor is smaller, the transmission efficiency of the motor is higher, the service life of the motor is longer, and the positioning accuracy of the pan / tilt platform is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the pan / tilt platform of the utility model in one embodiment;

[0017] Figure 2 A cross-sectional view of the pan / tilt platform of the utility model in one embodiment;

[0018] Figure 3 This is a structural explosion diagram of the pan / tilt platform described in the utility model in one embodiment.

[0019] Description of labels:

[0020] 1. PTZ body; 11. First through hole;

[0021] 2. bracket; 21. first connecting shaft; 211. threading hole; 22. accommodating cavity; 23. first supporting part; 231. second through hole; 24. second supporting part;

[0022] 3. first motor; 31. first mover; 311. first connecting hole; 32. first stator;

[0023] 4. second motor; 41. second mover; 411. second connecting hole; 42. second stator;

[0024] 5. Camera; 51. Second connecting axis;

[0025] 6. Main control module;

[0026] 7. First bearing;

[0027] 8. Second bearing. DETAILED DESCRIPTION

[0028] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0029] Please refer to Figures 1 to 3 The utility model provides a gimbal, which includes a gimbal body 1, a bracket 2, a first motor 3, a second motor 4, a camera 5, a main control module 6 and a positioning component, wherein the first motor 3 and the main control module 6 are both arranged on the gimbal body 1, the first motor 3 includes a first mover 31 and a first stator 32, the bracket 2 is connected to the first mover 31, the second motor 4 is arranged on the bracket 2, the camera 5 is rotatably connected to the bracket 2, the second motor 4 includes a second mover 41 and a second stator 42, the camera 5 is connected to the second mover 41, the positioning component includes a sensor and an encoder, the sensor is arranged on the first mover 31 and / or the second mover 41, the encoder is arranged on the first stator 32 and / or the second stator 42, and the encoder is electrically connected to the main control module 6.

[0030] The working principle of the utility model is briefly described as follows: the first motor 3 of the pan-tilt platform described in the utility model can drive the bracket 2 to rotate, so that the bracket 2 drives the camera 5 to rotate, and the second motor 4 can drive the camera 5 to rotate relative to the bracket 2. Among them, when the first / second mover 41 rotates, the encoder on the first / second stator 42 can sense the sensor to detect the rotation angle of the first / second mover 41, wherein the bracket 2 is directly connected to the first mover 31 of the first motor 3, and when the first mover 31 rotates, the bracket 2 follows the first mover 31 to rotate, and the pan-tilt platform can accurately control the positioning rotation and positioning pause of the bracket 2 through the communication between the encoder and the sensing member; the camera 5 bracket 2 is connected to the mover of the second motor 4, and when the second mover 41 rotates, the camera 5 follows the second mover 41 to rotate, and the pan-tilt platform can accurately control the positioning rotation and positioning pause of the camera 5 through the communication between the encoder and the sensing member. Specifically, in some preferred embodiments, the positioning component can use a magnetic encoder component or a code disc encoder component.

[0031] From the above description, it can be seen that the beneficial effects of the utility model are: an encoder is arranged on the first / second stator 42 of the gimbal described in the utility model, and an induction component is arranged on the first / second mover 41, which makes the first / second motor 4 have its own encoder; in addition, the bracket 2 of the gimbal is directly connected to the first mover 31 of the first motor 3, and the camera 5 is directly connected to the second mover 41 of the second motor 4, which enables contactless transmission and positioning between the bracket 2 and the first motor 3, and contactless transmission and positioning between the camera 5 and the second motor 4, the friction resistance between the motor and the motor load end is smaller, the transmission efficiency of the motor is higher, the service life is longer, and the positioning accuracy of the gimbal is higher.

[0032] Furthermore, the bracket 2 is provided with a first connecting shaft 21 , and the first connecting shaft 21 is connected to the first mover 31 .

[0033] Furthermore, a first connecting hole 311 is provided on the first mover 31 , a first through hole 11 is opened on the gimbal body 1 , the first connecting shaft 21 passes through the first through hole 11 , and the first connecting shaft 21 is disposed in the first connecting hole 311 .

[0034] From the above description, it can be seen that the first connecting shaft 21 is directly arranged in the first connecting hole 311 of the first mover 31, which enables contactless transmission between the first motor 3 and the bracket 2, thereby improving the transmission efficiency of the first motor 3 to the bracket 2 and reducing the mechanical friction between the first motor 3 and the bracket 2.

[0035] Furthermore, the bracket 2 is provided with a receiving cavity 22 , the second motor 4 is disposed in the receiving cavity 22 , and the first connecting shaft 21 is provided with a threading hole 211 that penetrates the receiving cavity 22 .

[0036] From the above description, it can be seen that the wire connecting the second motor 4 and the main controller can be arranged in the threading hole 211, which makes the structural integration of the gimbal higher, and the first motor 3 will not have an adverse effect on the wire when driving the bracket 2 to rotate.

[0037] Furthermore, it also includes a first bearing 7, and the first bearing 7 is arranged in the through hole.

[0038] Furthermore, the bracket 2 is provided with a first supporting portion 23 and a second supporting portion 24 which are arranged opposite to each other, the camera 5 is arranged between the first supporting portion 23 and the second supporting portion 24 , and the second motor 4 is arranged on the first supporting portion 23 .

[0039] It can be seen from the above description that the two opposite sides of the camera 5 are rotatably connected to the first support part 23 and the second support part 24 respectively, which makes the rotation of the camera 5 more reliable and stable.

[0040] Furthermore, the camera 5 is provided with a second connecting shaft 51 , and the second connecting shaft 51 is connected to the second mover 41 .

[0041] From the above description, it can be seen that the second connecting shaft 51 is directly arranged in the second connecting hole 411 of the second mover 41, which enables contactless transmission between the second motor 4 and the camera 5, thereby improving the transmission efficiency of the second motor 4 to the camera 5 and reducing the mechanical friction between the second motor 4 and the camera 5.

[0042] Furthermore, a second connecting hole 411 is provided on the second mover 41 , a second through hole 231 is provided on the first supporting portion 23 , the connecting shaft passes through the second through hole 231 , and the connecting shaft is disposed in the second connecting hole 411 .

[0043] Furthermore, it also includes a second bearing 8 , and the second bearing 8 is disposed in the second through hole 231 .

[0044] Furthermore, the axial direction of the first mover 31 and the axial direction of the second mover 41 are arranged perpendicular to each other.

[0045] It can be seen from the above description that the cooperation between the first motor 3 and the second motor 4 can make the rotatable angle of the camera 5 larger, thereby increasing the monitoring range of the camera 5.

[0046] Embodiment 1

[0047] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is: a gimbal, comprising a gimbal body 1, a bracket 2, a first motor 3, a second motor 4, a camera 5, a main control module 6 and a positioning component, wherein the first motor 3 and the main control module 6 are both arranged on the gimbal body 1, the first motor 3 comprises a first mover 31 and a first stator 32, the bracket 2 is connected to the first mover 31, the second motor 4 is arranged on the bracket 2, the camera 5 is rotatably connected to the bracket 2, the second motor 4 comprises a second mover 41 and a second stator 42, the camera 5 is connected to the second mover 41, the positioning component comprises a sensor and an encoder, the sensor is arranged on the first mover 31 and the second mover 41, the encoder is arranged on the first stator 32 and the second stator 42, and the encoder is electrically connected to the main control module 6; wherein the axial direction of the first mover 31 and the axial direction of the second mover 41 are arranged perpendicular to each other

[0048] Specifically, in the first embodiment, the encoder is a magnetic induction encoder, and the induction element is a magnetic material provided on the first mover 31 and the second mover 41. When the first / second mover 41 rotates, the magnetic induction encoder provided on the first / second stator 42 can accurately calculate and feedback the rotation position of the first / second mover 41.

[0049] For further information, please refer to Figure 2 and Figure 3 In the first embodiment, the bracket 2 is provided with a first connecting shaft 21, the first mover 31 is provided with a first connecting hole 311, the pan / tilt body 1 is provided with a first through hole 11, the first connecting shaft 21 passes through the first through hole 11, and the first connecting shaft 21 is arranged in the first connecting hole 311; the camera 5 is provided with a second connecting shaft 51, the second mover 41 is provided with a second connecting hole 411, the first support portion 23 is provided with a second through hole 231, the connecting shaft passes through the second through hole 231, and the connecting shaft is arranged in the second connecting hole 411. In the first embodiment, the first connecting shaft 21 of the bracket 2 is directly arranged in the first connecting hole 311 of the first mover 31, and the second connecting shaft 51 of the camera is directly arranged in the second connecting hole 411 of the second mover 41, which enables the movers of the first motor 3 and the second motor 4 to be directly connected to the motor load end, and there is no mechanical friction between the motor and the motor load end, thereby improving the transmission efficiency of the motor and extending the service life of the pan / tilt, and it can improve the driving control ability of the motor to the load end, so as to further improve the positioning accuracy of the pan / tilt.

[0050] In the first embodiment, in order to reduce the mechanical friction between the first connecting shaft 21 and the first through hole 11 and the mechanical friction between the second connecting shaft 51 and the second through hole 231 , a first bearing 7 is provided in the first through hole 11 and a second bearing 8 is provided in the second through hole 231 .

[0051] In the first embodiment, the first mover 31 is provided with a first connection hole 311, the pan / tilt body 1 is provided with a first through hole 11, the first connection shaft 21 passes through the first through hole 11, and the first connection shaft 21 is arranged in the first connection hole 311, the bracket 2 is provided with a receiving cavity 22, the second motor 4 is arranged in the receiving cavity 22, and the first connection shaft 21 is provided with a threading hole 211 that passes through the receiving cavity 22. The wires connected between the second motor 4 and the main controller can be arranged in the threading hole 211, which makes the structure of the pan / tilt higher in integration, and the first motor 3 will not have adverse effects on the wires when driving the bracket 2 to rotate.

[0052] To sum up, the first / second stator 42 of the gimbal described in the utility model is provided with an encoder, and the first / second mover 41 is provided with an induction component, which makes the first / second motor 4 have its own encoder; in addition, the bracket 2 of the gimbal is directly connected to the first mover 31 of the first motor 3, and the camera 5 is directly connected to the second mover 41 of the second motor 4, which enables contactless transmission and positioning between the bracket 2 and the first motor 3, and contactless transmission and positioning between the camera 5 and the second motor 4, the friction resistance between the motor and the motor load end is smaller, the transmission efficiency of the motor is higher, the service life is longer, and the positioning accuracy of the gimbal is higher.

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A pan / tilt head, characterized in that: It includes a gimbal body, a bracket, a first motor, a second motor, a camera, a main control module and a positioning component, wherein the first motor and the main control module are both arranged on the gimbal body, the first motor includes a first mover and a first stator, the bracket is connected to the first mover, the second motor is arranged on the bracket, the camera is rotatably connected to the bracket, the second motor includes a second mover and a second stator, the camera is connected to the second mover, the positioning component includes a sensor and an encoder, the sensor is arranged on the first mover and / or the second mover, the encoder is arranged on the first stator and / or the second stator, and the encoder is electrically connected to the main control module.

2. The pan / tilt head according to claim 1, characterized in that: The bracket is provided with a first connecting shaft, and the first connecting shaft is connected to the first mover.

3. The pan / tilt head according to claim 2, characterized in that: The first mover is provided with a first connecting hole, the platform body is provided with a first through hole, the first connecting shaft passes through the first through hole, and the first connecting shaft is arranged in the first connecting hole.

4. The pan / tilt head according to claim 3, characterized in that: The bracket is provided with a receiving cavity, the second motor is arranged in the receiving cavity, and the first connecting shaft is provided with a threading hole which passes through the receiving cavity.

5. The pan / tilt head according to claim 3, characterized in that: The invention also includes a first bearing, wherein the first bearing is arranged in the through hole.

6. The pan / tilt head according to claim 1, characterized in that: The bracket is provided with a first supporting part and a second supporting part which are arranged opposite to each other, the camera is arranged between the first supporting part and the second supporting part, and the second motor is arranged on the first supporting part.

7. The pan / tilt head according to claim 6, characterized in that: The camera is provided with a second connecting shaft, and the second connecting shaft is connected to the second mover.

8. The pan / tilt head according to claim 7, characterized in that: The second mover is provided with a second connecting hole, the first supporting portion is provided with a second through hole, the connecting shaft passes through the second through hole, and the connecting shaft is arranged in the second connecting hole.

9. The pan / tilt head according to claim 8, characterized in that: The invention also includes a second bearing, wherein the second bearing is arranged in the second through hole.

10. The pan / tilt head according to claim 1, characterized in that: The axial direction of the first mover and the axial direction of the second mover are arranged perpendicular to each other.

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