A gimbal motor

Abstract

The utility model discloses a kind of gimbal motor, including motor shell, wiring hole is equipped on the motor shell, the electric wire is arranged in the wiring hole, the electric wire is used to transmit electric signal into the gimbal motor, sealing filling area for filling the gap between the electric wire and the wiring hole is equipped in the wiring hole;By setting sealing filling area in wiring hole, the gap between filling electric wire and wiring hole is formed reliable sealing structure, blocks the path of moisture, significantly improves the protection ability of gimbal motor in humid, rain and the like environment, prevent internal circuit from damp short circuit, metal component rust, to guarantee motor operating stability and service life, effectively solve the technical problem that the waterproof performance of existing gimbal motor is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a gimbal motor. Background Technology

[0002] In existing technologies, the gimbal motor of a drone, as a core component driving the camera equipment to achieve precise attitude adjustment, directly affects the aerial imaging quality and system control accuracy. However, gimbal motors are typically exposed to complex outdoor environments for extended periods. When operating in conditions such as rain, snow, high humidity, fog, or splashing water, moisture can easily penetrate the motor through gaps in the casing or cable interfaces. Once moisture enters critical components such as the motor stator, rotor, or Hall sensors, it can not only cause winding short circuits and deterioration of insulation performance, but also lead to bearing corrosion, magnet corrosion, and unstable torque output, potentially causing motor failure or gimbal malfunction in severe cases. Furthermore, existing gimbal motors mostly employ conventional sealed structures with insufficient waterproofing, making them ill-equipped to withstand long-term or sudden exposure to moisture. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a gimbal motor with a waterproof structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A gimbal motor includes a motor housing with a wiring hole through which a wire passes. The wire is used to transmit electrical signals to the gimbal motor. The wiring hole has a sealing filling area to fill the gap between the wire and the wiring hole.

[0005] As described above, the gimbal motor has a Hall plate inside its housing, the Hall plate having a first side and a second side facing each other, and the wires are connected to the first side.

[0006] As described above, the gimbal motor has a sealing and waterproof module on the second side for sealing the second side of the Hall plate.

[0007] As described above, in the gimbal motor, the wire is bent at one end of the wiring hole and contacts the Hall plate surface.

[0008] As described above, the wiring holes of the gimbal motor are square in shape.

[0009] In the gimbal motor described above, the depth of the wiring hole is greater than the thickness of the wire.

[0010] As described above, the gimbal motor has a rib on its housing, located around the wiring hole, to increase the depth of the wiring hole.

[0011] The gimbal motor described above also includes: bearings; The motor housing includes a first motor housing and a second motor housing; The wiring hole and the sealing filling area are provided on the first motor housing; The first motor housing is connected to the inner ring of the bearing, and the second motor housing is connected to the outer ring of the bearing.

[0012] The gimbal motor described above further includes: a rotating shaft, which is indirectly connected to the second motor housing via the first motor housing; the second motor housing has a connecting rib extending towards the rotating shaft, and the connecting rib is threadedly connected to the end of the bearing away from the first motor housing. In the gimbal motor described above, a stator winding is installed inside the second motor housing.

[0013] The beneficial effects of this utility model are: By setting a sealed filling area at the wiring hole of the gimbal motor, the problem of motor waterproofing is effectively solved. The wires need to pass through the wiring hole to transmit electrical signals, but gaps exist between the wires and the hole wall, allowing moisture to easily seep into the motor along the wires. This solution fills the gap between the wires and the wiring hole with a sealed filling area, forming a reliable seal that blocks the path of moisture entry. This significantly improves the gimbal motor's protection capabilities in humid and rainy environments, preventing internal circuits from short-circuiting due to moisture and metal component corrosion. This ensures the motor's operational stability and service life, effectively solving the technical problem of insufficient waterproofing performance in existing gimbal motors. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following is a description of the accompanying drawings for this embodiment: Figure 1 This is one of the three-dimensional structural diagrams of the gimbal motor; Figure 2 yes Figure 1 Enlarged view of the structure of section A in the middle; Figure 3 This is a cross-sectional view of the gimbal motor; Figure 4 yes Figure 1 Enlarged view of the structure of section A in the middle; Figure 5 This is the second schematic diagram of the three-dimensional structure of the gimbal motor; The attached figures are labeled as follows: Motor housing 1, first motor housing 1, wiring hole 111, rib 112, second motor housing 12, connecting rib 121, wire 2, sealing and filling area 3, Hall plate 4, first surface 41, second surface 42, bearing 5, rotating shaft 6, stator winding 7. Detailed Implementation

[0015] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0016] Reference Figures 1 to 4 A gimbal motor includes a motor housing 1, a wiring hole 111 on the motor housing 1, a wire 2 passing through the wiring hole 111, the wire 2 being used to transmit electrical signals to the gimbal motor, and a sealing filling area 3 in the wiring hole 111 for filling the gap between the wire 2 and the wiring hole 111.

[0017] As can be seen, by setting a sealing filling area 3 in the wiring hole 111, the gap between the wire 2 and the wiring hole 111 can be effectively sealed, preventing moisture and humidity from penetrating into the motor along the wire 2. This sealing structure forms a reliable waterproof barrier at the key wiring location of the motor housing 1, significantly improving the overall protection level of the gimbal motor, preventing short circuits, corrosion, or signal abnormalities in the internal circuitry due to moisture, and ensuring stable operation of the motor in complex environments such as rain, fog, and high humidity. The setting of the sealing filling area 3 optimizes the sealing path of the wiring area, extends the physical channel for moisture intrusion, and forms a "maze-like" anti-seepage structure.

[0018] Specifically, the sealing and filling area 3 is formed by curing epoxy resin. Using an epoxy resin dripping process, when the resin is dripped into the wiring hole 111, the resin can adaptively deform according to the change in the outer diameter of the wire 2, completely sealing and filling the gap between the wire 2 and the wiring hole 111. This effectively addresses the risk of seal failure under conditions such as vibration and temperature changes, improves the waterproof reliability of the motor in dynamic operating environments, and achieves seamless connection.

[0019] This structure requires no complex processing equipment, is compatible with existing motor production lines, and improves assembly efficiency and consistency, while reducing the manufacturing cost of the waterproof structure. In practical applications, the design of the sealing and filling area 3 is suitable for various wire diameters 2, demonstrating good versatility. This embodiment is simple and easy to maintain, maintaining stable waterproof performance even under frequent drone takeoffs and landings, high and low temperature cycles, and high humidity operating scenarios. It is particularly suitable for outdoor operating environments such as aerial photography and inspection, significantly improving the environmental adaptability and service life of the gimbal motor.

[0020] Reference Figure 3 and Figure 4 Specifically, the motor housing 1 is provided with a Hall plate 4, which has a first surface 41 and a second surface 42 facing each other, and the wire 2 is connected to the first surface 41.

[0021] Hall plate 4 is installed inside motor housing 1 to detect rotor position in real time, ensuring accurate commutation and smooth operation of the motor.

[0022] In one embodiment, a sealing and waterproof module (not shown) is provided at the second surface 42 to seal the second surface 42 of the Hall plate 4.

[0023] In this embodiment, the wire 2 is connected to the first surface 41 to facilitate wiring and soldering operations, while reserving space for the second surface 42 to install a waterproof module, thus achieving a reasonable layout of signal input and protection structure and improving control stability.

[0024] The double-sided layout design of the Hall plate 4 optimizes its functional zoning. The first side 41 centralizes electrical connections, while the second side 42 is dedicated to protection, preventing the waterproof structure from interfering with the wiring process. This design improves the rationality of the circuit layout, enhances the anti-interference capability of signal transmission, and maintains detection accuracy, especially in high-frequency vibration environments.

[0025] Specifically, the Hall plate 4 is manufactured using standard PCB processes. The first side 41 features a pad array, supporting automated surface mounting and soldering to improve production efficiency. Its compact overall structure facilitates integration into miniaturized gimbal motors, meeting the lightweight and high-integration requirements of drones. In practical use, this layout facilitates later inspection and maintenance, allowing technicians to quickly troubleshoot circuit faults via the first side 41. Simultaneously, this structure provides expansion space for future sensor upgrades (such as adding temperature sensing), enhancing the motor's maintainability and potential for intelligent upgrades.

[0026] A sealed waterproof module is installed on the second side 42 of the Hall plate 4, which can effectively isolate moisture, condensation, and splashing liquids from corroding the solder joints and traces on the back of the circuit, preventing leakage, short circuits, or signal drift caused by moisture, and ensuring the long-term accuracy of position detection. The sealed waterproof module and the sealed filling area 3 together form a double-sided protection system for the Hall plate 4, which spatially isolates it from the electrical connection area of ​​the first side 41, avoiding the impact of a single protection point failure on the overall performance, and significantly improving the reliability of the sensor in high humidity and drastic temperature change environments.

[0027] Specifically, the sealed and waterproof module can be formed by dripping adhesive. The Hall plate 4 is installed inside the motor housing 1, and then the adhesive is dripped in. After the adhesive cures, a sealed and waterproof module is formed, which can avoid contaminating non-protected areas and ensure process controllability.

[0028] Specifically, the sealing and waterproofing module can also be achieved by coating with conformal coating or installing a sealing cover, offering flexible processes to suit different production scales. In practical applications, this module effectively addresses the risk of moisture intrusion when drones fly in rainy weather or pass through cloud and fog areas. It is particularly suitable for high-altitude operations such as power line inspection and agricultural spraying, significantly extending the lifespan of the Hall sensor and reducing gimbal jitter or loss of control caused by signal anomalies.

[0029] Reference Figure 2 In one embodiment, the wire 2 is bent at one end of the wiring hole 111 and contacts the surface of the Hall plate 4.

[0030] After exiting the sealed filling area 3, wire 2 is bent and contacts the surface of the Hall plate 4. This structure effectively releases external tension, preventing solder joint breakage or Hall plate displacement due to cable pulling, thus improving the mechanical reliability of the electrical connection. The bent structure forms a stress buffer, absorbing dynamic loads caused by vibration and acceleration changes during UAV flight, reducing the risk of fatigue damage to the connection points. Simultaneously, the close-fitting wiring of wire 2 shortens the wiring path, reduces electromagnetic interference, and improves signal transmission quality. In practical use, this design effectively copes with cable stress caused by frequent UAV takeoffs and landings and violent movements, making it particularly suitable for high-speed flight or complex flight path scenarios, reducing signal interruptions caused by loose connections, and improving the overall stability of the system.

[0031] Reference Figure 2 In one embodiment, the wiring hole 111 is square in shape.

[0032] The wiring hole 111 adopts a square design, which, compared to a round hole, better restricts the circumferential rotation and displacement of the wire 2 and the sealing filling area 3 within the hole, improving the stability of the sealing structure and preventing seal failure due to rotation. The square hole and the square sealing filling area 3 work together to form a surface contact seal, increasing the contact area, improving the uniformity of the sealing pressure, effectively preventing moisture from penetrating along the circumferential gap, and ensuring that the seal integrity is maintained even under vibration, which is superior to the point contact seal of traditional round holes.

[0033] The square hole can be formed in one step using a mold, achieving high processing precision and facilitating the directional installation of the sealing and filling area 3, preventing misalignment. This embodiment is compatible with various shell manufacturing processes such as injection molding and die casting, which is beneficial for mass production. In practical applications, this design is suitable for multi-core flat cables or round wire harnesses, exhibiting good adaptability.

[0034] Specifically, the square wiring hole 111 also facilitates the setting of positioning marks or error-proof structures around the hole, improving assembly efficiency and reliability, and is suitable for automated production lines.

[0035] Reference Figure 2 and Figure 3 In one embodiment, the depth of the wiring hole 111 is greater than the thickness of the wire 2.

[0036] In one embodiment, the motor housing 1 is provided with a rib 112 on the periphery of the wiring hole 111 to increase the depth of the wiring hole 111.

[0037] The addition of ribs 112 around the wiring hole 111 effectively increases the actual depth of the channel, further extending the moisture penetration path, enhancing the waterproof barrier effect, and improving the overall sealing level. Increasing the depth of the wiring hole 111 provides sufficient filling space for the sealing filling area 3, ensuring the adhesive is completely embedded inside the channel, forming a continuous sealing layer and preventing damage to the Hall plate 4. Increasing the depth of the wiring hole 111 also extends the path for moisture to seep into the motor from the outside, forming a "long-channel" waterproof mechanism, significantly slowing down the moisture penetration rate and improving protection under short-term immersion or splashing conditions. It also prevents the sealing material from overflowing and contaminating internal components due to an excessively shallow wiring hole 111. In practical use, this structure effectively addresses the conditions of drones flying briefly in the rain or being stored in humid environments for extended periods, improving the motor's environmental tolerance and reducing the repair rate due to insufficient sealing.

[0038] The rib 112 structure improves local sealing performance and optimizes space utilization without increasing the overall thickness of the shell.

[0039] More specifically, rib 112 is integrally molded with the outer shell, requiring no additional parts, resulting in a simple and reliable structure.

[0040] In one embodiment, it further includes: a bearing 5; the motor housing 1 includes a first motor housing 11 and a second motor housing 12; the wiring hole 111 and the sealing filling area 3 are disposed on the first motor housing 11; the first motor housing 11 is connected to the inner ring of the bearing 5, and the second motor housing 12 is connected to the outer ring of the bearing 5.

[0041] The wiring hole 111 and the sealing filling area 3 are concentrated in the first motor housing 11, which simplifies the waterproof structure and ensures long-term effective sealing.

[0042] In one embodiment, it further includes: a rotating shaft 6, which is indirectly connected to the second motor housing 12 through the first motor housing 11. The second motor housing 12 is provided with a connecting rib 121 extending toward the rotating shaft 6, and the connecting rib 121 is threadedly connected to one end of the bearing 5 away from the first motor housing 11.

[0043] The connecting rib 121 is threaded to the end of the bearing 5, achieving axial compression of the bearing by the second motor housing 12. This ensures a stable bearing installation and prevents housing separation or seal failure due to loosening. This threaded connection structure provides adjustable preload to accommodate different assembly tolerances, ensuring uniform bearing stress, improving rotational accuracy and operational stability, and reducing the impact of vibration on the sealing structure. The connecting rib 121 features a uniformly distributed design and can be quickly tightened using standard screws. The assembly process is simple, requiring no special tools, and is suitable for automated or on-site maintenance scenarios. In practical applications, this structure maintains reliable housing connection during frequent takeoffs and landings and turbulent flight of the UAV, preventing motor disintegration due to impact and significantly improving the structural safety of the gimbal under complex operating conditions.

[0044] Reference Figure 4 and Figure 5 In one embodiment, a stator winding 7 is installed inside the second motor housing 12.

[0045] The stator winding 7 is located inside the second motor housing 12, away from the side of the first motor housing 11 where the wiring hole 111 is located, forming a spatial isolation and reducing the direct impact of moisture intrusion on the core electromagnetic components.

[0046] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A gimbal motor, characterized in that: The device includes a motor housing, on which a wiring hole is provided, through which a wire is threaded. The wire is used to transmit electrical signals to the gimbal motor. The wiring hole is provided with a sealing filling area to fill the gap between the wire and the wiring hole.

2. The gimbal motor as described in claim 1, characterized in that: The motor housing is equipped with a Hall plate, which has a first side and a second side facing each other, and the wire is connected to the first side.

3. The gimbal motor as described in claim 2, characterized in that: The second side is provided with a sealing and waterproof module for sealing the second side of the Hall plate.

4. The gimbal motor as described in claim 2, characterized in that: The wire is bent at one end of the wiring hole and contacts the Hall plate surface.

5. The gimbal motor as described in claim 1, characterized in that: The wiring holes are square in shape.

6. The gimbal motor as described in claim 1 or 5, characterized in that: The depth of the wiring hole is greater than the thickness of the wire.

7. The gimbal motor as described in claim 1, characterized in that: The motor housing has ribs on its periphery to increase the depth of the wiring hole.

8. The gimbal motor as described in claim 1, characterized in that, Also includes: Bearings; The motor housing includes a first motor housing and a second motor housing; The wiring hole and the sealing filling area are provided on the first motor housing; The first motor housing is connected to the inner ring of the bearing, and the second motor housing is connected to the outer ring of the bearing.

9. The gimbal motor as described in claim 8, characterized in that, Also includes: A rotating shaft is indirectly connected to the second motor housing through the first motor housing. The second motor housing is provided with a connecting rib extending in the direction of the rotating shaft, and the connecting rib is threaded to the end of the bearing away from the first motor housing.

10. The gimbal motor as described in claim 9, characterized in that: The second motor housing contains a stator winding.

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