Motor fixing structure and pan-tilt camera

Abstract

The utility model discloses a motor fixing structure and a pan-tilt camera, the motor fixing structure comprises a fixed housing and a motor, and an end cover of the motor close to the fixed housing is connected with at least one locking screw. The locking screw penetrates through the end cover and then is locked on the fixed shell in the length direction of a rotating shaft in the motor so as to drive the fixed shell to rotate when the motor works. Compared with the prior art, the locking screw is located in the motor and installed in the length direction of the rotating shaft, the installation space needed by the periphery of the motor is omitted, the fixing mode of the motor is changed, the motor and the fixed shell can be connected and fixed, meanwhile, the overall outer diameter of the motor can be reduced, and the overall size of the motor is small.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment technology, and in particular to a motor fixing structure and a gimbal camera. Background Technology

[0002] A gimbal camera is a camera equipped with a gimbal. It contains a tilt axis motor that allows the lens to rotate along the tilt axis, adjusting the shooting direction. In existing technology, when the tilt axis motor is installed inside the camera, a fixing screw is typically added to the outer periphery of the motor for secure connection. However, this fixing method requires adding space for the screw holes to the overall size of the tilt axis motor, resulting in a larger overall size and negatively impacting the user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a motor fixing structure and a gimbal camera that can reduce the overall size of the motor.

[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, a motor fixing structure is provided, which includes a fixing housing and a motor. At least one locking screw is connected to the end cover of the motor near the fixing housing. The locking screw passes through the end cover and is locked to the fixing housing along the length direction of the motor's central axis, so as to drive the fixing housing to rotate when the motor is working.

[0005] The further technical solution is as follows: the motor includes a stator assembly and a rotor assembly that can rotate relative to the stator assembly. The rotor assembly includes a front end cover, a rotating shaft, and a rotor magnetic ring. The rotor magnetic ring is fixed inside the front end cover. One end of the rotating shaft is connected to the front end cover, and the other end passes through the stator assembly. The stator assembly is housed inside the rotor magnetic ring to drive the rotor magnetic ring and the rotating shaft to rotate. The locking screw passes through the front end cover and the fixed housing in sequence along the length extension direction of the rotating shaft and is locked onto the fixed housing.

[0006] The further technical solution is as follows: the motor also includes a rear end cover, the front end of the rear end cover extends outward to form a connecting part, the stator assembly is sleeved on the connecting part, and the rotating shaft passes through the connecting part.

[0007] A further technical solution is as follows: a limiting block is provided on the inner surface of the front cover, and a limiting plate that cooperates with the limiting block is provided on the edge of the connecting part to limit the rotation range of the rotor assembly when it rotates.

[0008] The further technical solution is as follows: the motor also includes an induction magnetic ring and a magnetoelectric sensor. The induction magnetic ring is housed in a magnetic ring seat, the magnetic ring seat is connected to the rotating shaft, and the magnetoelectric sensor is disposed on a PCB board corresponding to the induction magnetic ring.

[0009] The further technical solution is as follows: the inner side of the rotating shaft is provided with an internal thread, the magnetic ring seat is provided with the internal thread on the side near the rotating shaft, and the outer wall of the magnetic ring seat is provided with an external thread, so as to be threadedly connected to the rotating shaft.

[0010] A further technical solution is as follows: a groove is formed on the outer peripheral wall of the front end cover, and the fixed housing is provided with a protrusion that cooperates with the groove.

[0011] A further technical solution is as follows: a mounting groove is formed by protruding outward from the middle of one side of the fixed housing, a mounting plate is provided in the mounting groove, and the locking screw is locked onto the mounting plate after passing through the end cover of the motor.

[0012] To solve the above-mentioned technical problems, this utility model also provides a motor fixing structure, which includes a fixed housing and a motor. The end cap of the motor near the fixed housing is glued / interference-fitted onto the fixed housing so as to drive the fixed housing to rotate when the motor is working.

[0013] To solve the above-mentioned technical problems, according to another aspect of the present invention, a gimbal camera is also provided, including a lens module and a gimbal for supporting the lens module. The gimbal includes a support arm and the aforementioned motor fixing structure. The motor fixing structure is disposed at the upper end of the support arm. The lens module is installed in the fixing housing so as to drive the lens module to rotate when the motor is working.

[0014] The beneficial technical effects of this utility model are as follows: Compared with the prior art, in the motor fixing structure of this utility model, a locking screw is connected to the end cover of the motor near the fixing housing. After the locking screw passes through the end cover, it is locked to the fixing housing along the length direction of the motor's central shaft, so that the fixing housing can be driven to rotate during operation. It can be seen that the locking screw of this utility model is located inside the motor and is installed along the length direction of the shaft, eliminating the installation space required on the outer periphery of the motor and changing the motor fixing method. It can not only realize the connection and fixing of the motor and the fixing housing, but also reduce the overall outer diameter of the motor, making the overall size of the motor smaller. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gimbal camera shown in the first embodiment of this utility model;

[0016] Figure 2 yes Figure 1 An exploded view of the motor fixing structure in the gimbal camera shown.

[0017] Figure 3 yes Figure 2 A cross-sectional view of the motor mounting structure after assembly.

[0018] Figure 4 yes Figure 1 The diagram shows the exploded structure of the motor in the gimbal camera.

[0019] Figure 5 This is a schematic diagram of the structure of the motor shown in the second embodiment of this utility model;

[0020] Figure 6 yes Figure 5 The diagram shows a cross-sectional view of the motor's rotating shaft and magnetic ring seat.

[0021] Reference numerals: 100-Gimbal camera; 10-Motor fixing structure; 11-Fixing housing; 111-Mounting slot; 112-Mounting plate; 113-Protrusion; 12-Motor; 21-Stator assembly; 211-Stator core; 212-Stator salient pole; 22-Rotor assembly; 221-Front end cover; 2211-Groove; 2212-Limiting block; 222-Shaft; 2221-Internal thread; 223-Rotor magnetic ring; 224-Bearing; 23-Locking screw; 24-Rear end cover; 241-Connecting part; 242-Limiting plate; 25-Induction magnetic ring; 26-Magnetic ring seat; 261-External thread; 30-Support arm; 40-Base; 50-Lens module. Detailed Implementation

[0022] To better understand the technical content of this utility model, the technical solution of this utility model will be further introduced and explained below with reference to the schematic diagram, but it is not limited thereto.

[0023] Reference Figures 1 to 4 , Figures 1 to 4A first embodiment of the gimbal camera 100 of this utility model is shown. In the embodiment shown in the figures, the gimbal camera 100 includes a lens module 50 and a gimbal for supporting the lens module 50. The gimbal includes a support arm 30 and a motor fixing structure 10. The motor fixing structure 10 includes a fixing housing 11 and a motor 12. The motor 12 is disposed at the upper end of the support arm 30. The lens module 50 is installed in the fixing housing 11. At least one locking screw 23 is connected to the end cap of the motor 12 near the fixing housing 11. The locking screw 23 passes through the end cap and is locked to the fixing housing 11 along the length direction of the central shaft 222 of the motor 12, so as to drive the fixing housing 11 to rotate when the motor 12 is working, thereby driving the lens module 50 to rotate. It can be understood that the fixing housing 11 in this embodiment of the gimbal camera is a lens barrel for mounting the lens module 50, and the motor 12 is a pitch axis motor. In some embodiments, the gimbal may further include a base 40, and a support arm 30 may be disposed on the base 40; and depending on installation requirements, this utility model may be provided with one or more locking screws 23, preferably, such as Figure 2 As shown, this embodiment is equipped with four locking screws 23 to better achieve a stable connection between the motor 12 and the fixed housing 11. Based on the above design, this utility model uses locking screws 23 located inside the motor 12 and extending out of the end cap of the motor 12 to fix the motor 12 and the fixed housing 11 for mounting the lens module 50 along the length direction of the rotating shaft 222. This changes the motor fixing method, eliminates the installation space required by the screws on the outer periphery of the motor in the traditional solution, and achieves the purpose of reducing the outer diameter of the motor 12, making the overall size of the pitch axis motor smaller.

[0024] The lens module 50 is a key component of the gimbal camera 100. The lens module 50 may include a lens and a lens control board connected to the lens. The lens control board controls the lens's shooting capabilities. In this embodiment, the lens module 50 is installed inside the fixed housing 11. The motor 12 can be locked to one side of the fixed housing 11 by the locking screw 23. Specifically, a mounting groove 111 protrudes outward from the center of one side of the fixed housing 11. A mounting plate 112 is disposed within the mounting groove 111. The locking screw 23 passes through the end cap of the motor 12 and is locked to the mounting plate 112.

[0025] In some embodiments, the motor 12 includes a stator assembly 21 and a rotor assembly 22 rotatable relative to the stator assembly 21. The rotor assembly 22 includes a front end cover 221, a rotating shaft 222, and a rotor magnetic ring 223. The rotor magnetic ring 223 is fixed inside the front end cover 221. One end of the rotating shaft 222 is connected to the front end cover 221, and the other end passes through the stator assembly 21. The stator assembly 21 is housed within the rotor magnetic ring 223 to drive the rotor magnetic ring 223 and the rotating shaft 222 to rotate. The locking screw 23 passes through the front end cover 221 and the mounting plate 112 in sequence along the length extension direction of the rotating shaft 222 and is locked onto the fixed housing 11.

[0026] Specifically, such as Figures 2 to 4 As shown, a protrusion 113 is provided in the mounting groove 111 of the fixed housing 11, and a groove 2211 corresponding to the protrusion 113 is provided on the outer peripheral wall of the front end cover 221 to further stabilize the connection between the motor 12 and the fixed housing 11. The stator assembly 21 includes a stator core 211, and multiple stator salient poles 212 are formed on the outer peripheral surface of the stator core 211. A coil is wound on each stator salient pole 212. For clarity, the winding is not shown. When the coil is energized, it induces the rotor magnetic ring 223. The rotor magnetic ring 223 rotates, which drives the front end cover 221 and the rotating shaft 222 to rotate, thereby driving the fixed housing 11 to rotate, so as to drive the lens module 50 to rotate and change the shooting angle of the lens module 50.

[0027] Furthermore, the motor 12 also includes a rear end cover 24, with a connecting portion 241 extending outward from the center of the front end of the rear end cover 24. The stator assembly 21 is sleeved on the connecting portion 241, and the rotating shaft 222 passes through the connecting portion 241. The rear end cover 24 is fixed to the upper end of the support arm 30. To make the rotating shaft 222 rotate more smoothly, two bearings 224 are also sleeved on the rotating shaft 222. The two bearings 224 are sequentially sleeved on the rotating shaft 222 so that the rotating shaft 222 is rotatably supported within the connecting portion 241.

[0028] Continue to refer to Figures 2 to 4 In the embodiment shown in the attached drawings, a limiting block 2212 is provided on the inner surface of the front end cover 221, and a limiting plate 242 corresponding to the edge of the connecting portion 241 is provided to cooperate with the limiting block 2212, so as to limit the rotation range of the rotor assembly 22 when it rotates. Based on this design, the rotation angle of the motor 12 can be limited by the cooperation of the limiting block 2212 and the limiting plate 242, thereby limiting the pitch angle range of the lens module 50.

[0029] Preferably, in some embodiments, the motor 12 further includes an induction magnetic ring 25 and a magnetoelectric sensor. The induction magnetic ring 25 is housed within a magnetic ring seat 26, which is connected to the rotating shaft 222. The magnetoelectric sensor is disposed on a PCB board (not shown) corresponding to the induction magnetic ring 25, i.e., the PCB board can be located on the side of the magnetic ring seat 26 away from the rotating shaft 222. In this embodiment, as... Figure 3 As shown, the magnetic ring seat 26 is sleeved on the rotating shaft 222. It can be interference-fitted with the rotating shaft 222 or threadedly connected to the rotating shaft 222 by providing an external thread on the outer wall of the rotating shaft 222 and a corresponding internal thread on the magnetic ring seat 26. The installation method of the sensing magnetic ring 25 and the magnetic ring seat 26 can also be an interference fit, meaning the sensing magnetic ring 25 can be tightly clamped inside the magnetic ring seat 26, or it can be glued to the magnetic ring seat 26. Based on the above design, when the rotating shaft 222 rotates, it can drive the sensing magnetic ring 25 to rotate. The magnetoelectric sensor can detect the rotation angle position of the sensing magnetic ring 25 to determine the rotation angle of the rotor assembly 22.

[0030] In summary, the motor fixing structure 10 in the gimbal camera 100 of this utility model fixes the motor 12 and the fixing housing 11 for mounting the lens module 50 by means of locking screws 23. The locking screws 23 are located inside the motor 12 and are installed along the length of the rotating shaft 222. This changes the motor fixing method and eliminates the installation space required for the screws on the outer periphery of the motor in the traditional solution. It can not only realize the connection and fixing of the motor 12 and the lens module 50, but also reduce the overall outer diameter of the motor 12, making the overall size of the motor smaller.

[0031] Reference Figure 5 and Figure 6 , Figure 5 and Figure 6This paper presents a second embodiment of the gimbal camera 100 of this utility model. The difference between this embodiment and the first embodiment lies in the specific connection method of the magnetic ring seat 26 and the rotating shaft 222; the remaining structures are the same or similar. In this embodiment, the rotating shaft 222 has an internal thread 2221 on its inner side, and the magnetic ring seat 26 is located near the side of the rotating shaft 222 where the internal thread 2221 is located. The outer wall of the magnetic ring seat 26 also has an external thread 261, thus connecting it threadedly to the rotating shaft 222. Based on the above design, the motor 12 and the fixed housing 11 for mounting the lens module 50 are fixed along the length direction of the rotating shaft 222 by a locking screw 23 located inside the motor 12 and one end of the front end cover 221, thereby reducing the overall size of the motor 12. In addition, the magnetic ring seat 26 is connected to the internal thread 2221 inside the rotating shaft 222 by the external thread 261 on its outer wall, so as to indirectly connect the induction magnetic ring 25 housed in the magnetic ring seat 26 to the rotating shaft 222. The threaded connection between the magnetic ring seat 26 and the rotating shaft 222 not only facilitates flexible production and rework, that is, the parts are easy to disassemble and assemble, which is conducive to flexible production, but also convenient to assemble and easy to disassemble and maintain during rework. At the same time, the position of the bearing 224 when it is sleeved on the rotating shaft 222 coincides with the height of the threaded connection part 241 of the magnetic ring seat 26 and the rotating shaft 222. The magnetic ring is close to the bearing 224, which can shorten the overall size of the motor 12 in the direction of the rotating shaft 222, further reducing the overall size of the motor 12.

[0032] Understandably, this utility model can also provide a gimbal camera, which includes a lens module and a gimbal for supporting the lens module. The gimbal includes a support arm and a motor fixing structure. The motor fixing structure includes a fixing housing and a motor. The motor is disposed at the upper end of the support arm. The lens module is installed in the fixing housing. The end cap of the motor near the fixing housing is glued / interference-fitted onto the fixing housing for mounting the lens module, so as to drive the fixing housing to rotate when the motor is working, thereby driving the lens module to rotate. That is, the specific connection method between the motor and the fixing housing is different from the above embodiment, while the rest of the structure is the same or similar. In this embodiment, the motor and the fixing housing are fixed by adhesive, that is, the front end cap can be glued to the mounting plate of the fixing housing, or it can be fixed by interference fit, so that the front end cap is clamped in the mounting groove. Both methods can achieve the goal of fixing the motor and the lens module without the need for external screws and without increasing the installation space required for the motor's external screws, thereby reducing the outer diameter of the motor and making the overall size of the motor smaller.

[0033] The above preferred embodiments should be regarded as illustrative examples of the implementation of the present utility model. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present utility model should be considered within the scope of protection of this patent.

Claims

1. A motor fixing structure, characterized in that, The motor fixing structure includes a fixing housing for mounting a lens module and a motor. A mounting groove protrudes outward from the middle of one side of the fixing housing, and a mounting plate is disposed in the mounting groove. At least one locking screw is connected to the end cover of the motor near the fixing housing. The locking screw passes through the end cover and is locked to the mounting plate along the length direction of the motor's central axis to drive the fixing housing to rotate when the motor is working. A protrusion is provided in the mounting groove of the fixing housing, and a groove corresponding to the protrusion is provided on the outer peripheral wall of the motor end cover.

2. The motor fixing structure as described in claim 1, characterized in that, The motor includes a stator assembly and a rotor assembly that can rotate relative to the stator assembly. The rotor assembly includes a front end cover, a rotating shaft, and a rotor magnetic ring. The rotor magnetic ring is fixed inside the front end cover. One end of the rotating shaft is connected to the front end cover, and the other end passes through the stator assembly. The stator assembly is housed inside the rotor magnetic ring to drive the rotor magnetic ring and the rotating shaft to rotate. The locking screw passes through the front end cover and the fixed housing in sequence along the length of the rotating shaft and is locked onto the fixed housing.

3. The motor fixing structure as described in claim 2, characterized in that, The motor also includes a rear end cover, the front end of which extends outward to form a connecting portion, the stator assembly is sleeved on the connecting portion, and the rotating shaft passes through the connecting portion.

4. The motor fixing structure as described in claim 3, characterized in that, A limiting block is provided on the inner surface of the front cover, and a limiting plate that cooperates with the limiting block is provided on the edge of the connecting part to limit the rotation range of the rotor assembly when it rotates.

5. The motor fixing structure as described in claim 2, characterized in that, The motor also includes an induction magnetic ring and a magnetoelectric sensor. The induction magnetic ring is housed in a magnetic ring holder, which is connected to the rotating shaft. The magnetoelectric sensor is mounted on a PCB board corresponding to the induction magnetic ring.

6. The motor fixing structure as described in claim 5, characterized in that, The inner side of the rotating shaft is provided with an internal thread, the magnetic ring seat is located near the side of the rotating shaft that is provided with the internal thread, and the outer wall of the magnetic ring seat is provided with an external thread, so as to be threadedly connected to the rotating shaft.

7. The motor fixing structure as described in claim 2, characterized in that, A groove is formed on the outer peripheral wall of the front cover, and the groove engages with a corresponding protrusion on the fixed housing.

8. A motor fixing structure, characterized in that, The motor fixing structure includes a fixing housing for mounting the lens module and a motor. A mounting groove is formed by protruding outward from the middle of one side of the fixing housing. A mounting plate is disposed in the mounting groove. The end cap of the motor near the fixing housing is glued to the mounting plate / interference-fitted into the mounting groove so as to drive the fixing housing to rotate when the motor is working. A protrusion is provided in the mounting groove of the fixing housing, and a groove corresponding to the protrusion is opened on the outer peripheral wall of the motor end cap.

9. A gimbal camera, characterized in that, The gimbal camera includes a lens module and a gimbal for supporting the lens module. The gimbal includes a support arm and a motor fixing structure as described in any one of claims 1-8. The motor fixing structure is disposed at the upper end of the support arm. The lens module is installed in the fixing housing to drive the lens module to rotate when the motor is working.

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