A damped pitch adjustment device

Abstract

This utility model discloses a damped pitch adjustment device, including a fixed part, a rotating part, a transmission mechanism, and a torque transmission component. The transmission mechanism includes a rotating shaft, a drive assembly, a fixed transmission component, and a reduction assembly. The rotating shaft connects the fixed part and the rotating part. The drive assembly is fixed inside the housing by a mounting plate. The fixed transmission component is mounted on the rotating shaft and engages with the drive assembly via the reduction assembly. One end of the torque transmission component has a transition fit with the rotating shaft, and the other end has an interference fit with the reduction shaft of the reduction assembly. During transmission, it eliminates transmission backlash, provides damping, and offers buffer protection. Furthermore, this utility model provides dual adjustment methods: electric adjustment via the drive assembly and manual adjustment by directly turning the rotating shaft. The torque transmission component effectively suppresses vibration and position drift, providing stable pitch angle adjustment for external devices mounted on an adjustable panel.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment support and adjustment technology, and in particular to a damping pitch adjustment device. Background Technology

[0002] Most pitch adjustment devices on the market currently employ a closed worm gear reducer structure. This traditional pitch adjustment device is primarily used in applications requiring stable and precise pitch angle adjustment. However, in the event of a power outage or system malfunction, the self-locking function of the worm gear structure prevents manual operation, making it impossible for users to adjust the pitch angle manually. This causes significant inconvenience in emergency situations or maintenance operations. To address the manual operation issue, some pitch adjustment devices with worm gear self-locking functions on the market are equipped with a clutch function, allowing switching between electric and manual modes. However, these clutch-equipped devices are complex and bulky, unsuitable for applications with limited space and requiring concealed installation. Furthermore, existing pitch adjustment devices suffer from technical problems such as accumulated transmission backlash, vibration, position drift, and lack of overload protection during transmission, affecting the stability and adjustment accuracy of the device. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a damping pitch adjustment device that can eliminate transmission backlash and suppress vibration and shaking.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A damped pitch adjustment device includes: a fixed part, a rotating part, a transmission mechanism, and a torque transmission component; the fixed part includes a fixed base for connecting to an external structure; the rotating part includes an adjustable panel and a housing, the adjustable panel for supporting external equipment and being installed in conjunction with the housing; the transmission mechanism includes a rotating shaft, a drive assembly, a fixed transmission component, and a reduction assembly, the rotating shaft connecting the fixed part and the rotating part, the drive assembly being fixed inside the housing by a mounting plate, the fixed transmission component being disposed on the rotating shaft and engaging with the drive assembly via the reduction assembly; one end of the torque transmission component is transition-fitted with the rotating shaft, and the other end is interference-fitted with the reduction shaft of the reduction assembly; when the drive assembly rotates, the angle of the rotating part relative to the fixed part changes through the transmission engagement of the reduction assembly and the fixed transmission component, thereby achieving pitch adjustment of the adjustable panel.

[0006] Furthermore, the torque transmission component is a sheet-like structure, including at least one torque transmission sheet. Each torque transmission sheet includes a first connecting end and a second connecting end. The first connecting end is provided with a first opening groove, and the second connecting end is provided with a second opening groove. The inner diameter of the first opening groove forms a transition fit with the outer diameter of the rotating shaft, and the inner diameter of the second opening groove forms an interference fit with the outer diameter of the deceleration rotating shaft.

[0007] Furthermore, the torque transmission component includes 2-7 torque transmission plates, which are coaxially stacked, and the damping torque is adjusted by adjusting the number of torque transmission plates.

[0008] Furthermore, the deceleration assembly includes a deceleration shaft and a deceleration gear. The deceleration gear includes a large-diameter gear and a small-diameter gear. The large-diameter gear meshes with the output gear of the drive assembly, and the small-diameter gear meshes with the arc-shaped teeth of the fixed transmission member.

[0009] Furthermore, the drive assembly includes a motor and a multi-stage planetary reducer. The multi-stage planetary reducer includes multiple planetary gear sets. Each planetary gear set includes a sun gear, planetary gears, and a planet carrier. The planet carriers of adjacent planetary gear sets are connected to the sun gears. The planet carrier of the last planetary gear set is connected to an output gear.

[0010] Furthermore, bearings are provided at both ends of the rotating shaft, and the rotating shaft is rotatably connected to the housing through the bearings.

[0011] Furthermore, the housing has a split structure, and the mounting plate is fixedly installed inside the housing; the housing has a window, and the fixing part is connected to the rotating shaft through the window; a limit block is provided on the mounting plate; a limit rod is provided on the housing; the limit block can contact both sides of the limit rod respectively to limit the rotation stroke of the rotating part relative to the fixing part.

[0012] Furthermore, the drive assembly is provided with a Hall plate and a magnetic ring. The Hall plate is used to detect changes in the magnetic field of the magnetic ring to obtain the rotational position information of the drive assembly, thereby realizing the control of the pitch angle of the adjustable panel.

[0013] Furthermore, a retaining ring is provided at the end of the fixing part away from the fixing base, and the rotating shaft is transitionally fitted with the retaining ring.

[0014] Furthermore, the adjustable panel is provided with a data exchange position and a magnetic array. The data exchange position is used for data transmission with external devices, and the magnetic array is used for magnetically attracting external devices.

[0015] The beneficial effects of this utility model are:

[0016] This utility model discloses a damping pitch adjustment device, comprising a fixed part, a rotating part, a transmission mechanism, and a torque transmission component. The fixed part includes a fixed base for connection to an external structure. The rotating part includes an adjustable panel and a housing; the adjustable panel supports external equipment and is installed in conjunction with the housing. The transmission mechanism includes a rotating shaft, a drive assembly, a fixed transmission component, and a reduction assembly. The rotating shaft connects the fixed part and the rotating part. The drive assembly is fixed within the housing via a mounting plate. The fixed transmission component is mounted on the rotating shaft and engages with the drive assembly via the reduction assembly. One end of the torque transmission component has a transition fit with the rotating shaft, while the other end has an interference fit with the reduction shaft of the reduction assembly. During transmission, this component eliminates transmission backlash, provides damping, and offers buffer protection. Furthermore, this utility model allows for both electric angle adjustment via the drive assembly and manual adjustment by directly manipulating the rotating shaft, providing users with dual adjustment methods. This utility model features a reasonable structural design, good transmission stability, and the torque transmission component effectively suppresses vibration and position drift, providing stable pitch angle adjustment for external equipment mounted on the adjustable panel. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the adjustable panel of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model - 1;

[0022] Figure 5 This is a schematic diagram of the disassembled structure of this utility model - 2;

[0023] Figure 6 This is a schematic diagram of the disassembled structure of this utility model - 3;

[0024] Figure 7 This is a structural schematic diagram of the torque transmission component of this utility model.

[0025] in,

[0026] 100. Fixing part; 110. Fixing base; 120. Snap ring;

[0027] 200. Rotating part; 210. Housing; 211. Window; 212. Limiting rod; 220. Adjustable panel; 221. Data exchange position; 222. Magnetic array; 230. Mounting plate; 231. Limiting block;

[0028] 300. Transmission mechanism; 310. Rotating shaft; 311. Bearing; 320. Drive assembly; 321. Motor; 322. Multi-stage planetary reducer; 3221. Sun gear; 3222. Planetary gear; 3223. Planet carrier; 323. Hall plate; 324. Magnetic ring; 325. Output gear; 330. Fixed transmission component; 331. Arc-shaped tooth section; 340. Reduction assembly; 341. Reduction shaft; 342. Reduction gear;

[0029] 400 Torque transmission component; 410 Torque transmission plate; 411 First connecting end; 4111 First opening groove; 412 Second connecting end; 4121 Second opening groove. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1-6A damping pitch adjustment device includes a fixed part 100, a rotating part 200, a transmission mechanism 300, and a torque transmission component 400. The fixed part 100 includes a fixed base 110 for connection to an external structure. The rotating part 200 includes an adjustable panel 220 and a housing 210; the adjustable panel 220 supports external equipment and is installed in conjunction with the housing 210. The transmission mechanism 300 includes a rotating shaft 310, a drive assembly 320, a fixed transmission component 330, and a reduction assembly 340. The rotating shaft 310 connects the fixed part 100 and the rotating part 200. The 320 is fixed inside the housing 210 by a mounting plate. The fixed transmission component 330 is disposed on the rotating shaft 310 and is in transmission cooperation with the drive assembly 320 through the reduction assembly 340. One end of the torque transmission component 400 is transitionally fitted with the rotating shaft 310, and the other end is interference-fitted with the reduction shaft 341 of the reduction assembly 340. When the drive assembly 320 rotates, the rotation part 200 changes angle relative to the fixed part 100 through the transmission cooperation of the reduction assembly 340 and the fixed transmission component 330, thereby realizing the pitch adjustment of the adjustable panel 220.

[0032] Understandably, the damping pitch adjustment device in this case is rigidly connected to the external structure through the fixed base 110 of the fixed part 100, establishing a supporting foundation. At the same time, the adjustable panel 220 of the rotating part 200 serves as a bearing platform for placing external equipment. The housing 210 provides structural support for the entire rotating part 200 and accommodates the internal components. The rotating shaft 310 in the transmission mechanism 300 passes through the fixed part 100 and forms a rotational connection point with the rotating part 200. The drive component 320 is fixed in the housing 210 by a mounting plate. The fixed transmission component 330 is mounted on the rotating shaft 310 by a key connection or interference fit to keep its position unchanged. One end of the torque transmission component 400 is transitionally fitted with the rotating shaft 310, and the other end is interference-fitted with the reduction shaft 341 of the reduction component 340. During the transmission process, it plays a role in eliminating gaps, providing damping, and providing buffer protection. When the motor 321 inside the drive assembly 320 is powered on and started, the motor 321 shaft drives the output gear 325 to rotate. The output gear 325 meshes with the arc-shaped teeth 331 on the fixed transmission component 330 through the reduction assembly 340. During this process, the torque transmission component 400 effectively eliminates the backlash in the transmission chain, preventing vibration and position drift caused by the backlash. At the same time, the structure provides appropriate damping effect when transmitting torque, effectively suppressing the vibration caused by changes in external load or inertial force. Since the fixed transmission component 330 is fixed in position, the drive assembly 320 can only move in a circle around the rotating shaft 310, thereby causing the entire rotating part 200 to deflect at an angle relative to the fixed part 100, ultimately achieving smooth pitch angle adjustment of the adjustable panel 220.

[0033] Reference Figure 6 , 7 The torque transmission component 400 has a sheet-like structure, including at least one torque transmission plate 410. Each torque transmission plate 410 includes a first connecting end 411 and a second connecting end 412. The first connecting end 411 is provided with a first opening groove 4111, and the second connecting end 412 is provided with a second opening groove 4121. The torque transmission plate 410 is made of a metal material with a certain rigidity, such as steel or aluminum alloy, and has a certain thickness and elastic deformation capacity. When multiple torque transmission plates 410 are stacked, the overall damping characteristics and torque transmission capacity can be adjusted by adjusting the number of plates. The torque transmission component 400 achieves different connection methods at both ends through its open slot structure. The inner diameter of the first open slot 4111 forms a transition fit with the outer diameter of the rotating shaft 310. The transition fit eliminates the clearance in the transmission system by controlling the shaft hole clearance within a reasonable range, preventing the backlash generated during gear meshing from being transmitted to the rotating shaft 310. The inner diameter of the second open slot 4121 forms an interference fit with the outer diameter of the reduction shaft 341. The interference fit is achieved by designing the shaft diameter to be slightly larger than the hole diameter, and by heating the torque transmission piece 410 or freezing the reduction shaft 341 during assembly to achieve thermal expansion and contraction, forming a tight mechanical connection.

[0034] In some embodiments, the torque transmitter 400 may include 2-7 torque transmitter plates 410, which are coaxially stacked. The damping torque is adjusted by changing the number of torque transmitter plates. The plate-like structure and material properties of the torque transmitter 400 provide appropriate damping. When multiple plates are stacked, the torque transmission capacity is enhanced and the damping effect is adjusted, effectively suppressing vibration and shaking caused by changes in external load or inertial forces. At the same time, the tight fit of the transition mating end eliminates gaps in the transmission chain, preventing the adjustable panel 220 from accidentally falling or drifting under gravity.

[0035] In some embodiments, refer to Figure 2 The adjustable panel 220 has a data exchange point 221 installed through preset holes. The data exchange point 221 is embedded into the panel surface in the form of a USB interface, a Type-C interface, a metal connection protrusion, or a wireless communication module. At the same time, multiple permanent magnets are arranged in a regular array on the panel to form a magnetic array 222. The permanent magnets are attached to the panel by adhesive or mechanical fixation. When an external device needs to connect to the pitch adjustment device, the external device first uses its own magnetic components or iron shell to generate magnetic attraction force with the magnetic array 222 to achieve physical fixation. Then, the data interface of the external device is plugged into or wirelessly paired with the data exchange point 221 to establish a data transmission channel, thereby realizing a stable connection and data interaction between the external device and the pitch adjustment device.

[0036] The external devices can be various electronic devices such as tablets, mobile phones, laptops, monitors, projectors, scanners, and drawing tablets. Taking a specific tablet as an example, when the tablet is placed on the adjustable panel 220 of this case, the tablet achieves rapid positioning and stable adsorption through the magnetic array 222. Subsequently, the drive component 320 of the tilt adjustment device can drive the adjustable panel 220 to adjust the angle, thereby realizing the tilt angle change of the tablet screen. Users can adjust the tilt angle of the tablet according to their viewing needs or operating habits to obtain the best visual effect and operating experience. At the same time, the data exchange position 221 can also establish a data connection with the tablet to realize functions such as charging, data transmission, or signal output.

[0037] In some embodiments, the magnetic array 222 is composed of multiple rows of horizontally parallel magnets distributed on the adjustable panel 220. The magnets in each row are arranged in parallel, and adjacent magnets are arranged with opposite magnetic poles to form an alternating magnetic field distribution. The alternating magnetic poles can form a unique and correct adsorption direction with the corresponding magnetic structure on the external device, avoiding reverse or misaligned installation of the device. In some embodiments, at least one vertical magnet is also included to form a cross-shaped magnetic field grid with the horizontal magnets. The vertical magnet further defines the horizontal position of the external device, ensuring that the device can only be adsorbed according to the preset direction and position, thereby achieving a foolproof function and significantly improving connection efficiency. When the external device approaches the adjustable panel 220, the combined magnetic field of the alternating magnetic poles and the vertical magnet automatically guides the device to quickly find the correct position and adsorb stably. Subsequently, the data interface of the external device and the data exchange bit 221 are automatically aligned and a data transmission channel is established.

[0038] In some embodiments, refer to Figure 6 The drive assembly 320 has a magnetic ring 324 mounted on the shaft end of the motor 321. The magnetic ring 324 is multi-pole magnetized to form alternating N and S poles along the circumferential direction. At the same time, the Hall plate 323 is fixed to the fixed part 100 of the drive assembly 320 by bolts. The Hall plate 323 integrates multiple Hall sensors and maintains an appropriate air gap distance with the magnetic ring 324. When the motor 321 of the drive assembly 320 starts to rotate, the magnetic ring 324 rotates synchronously with the shaft of the motor 321. The Hall sensors on the Hall plate 323 continuously detect the changes in the magnetic field of the magnetic ring 324 and output corresponding electrical signals. By analyzing the frequency and phase changes of these electrical signals, the real-time rotation position and speed information of the drive assembly 320 are calculated. The obtained position information is then compared with the target pitch angle. The rotation direction and speed of the motor 321 are adjusted through a closed-loop control algorithm, thereby controlling the angle change of the rotating part 200 relative to the fixed part 100, and finally realizing the control of the pitch angle of the adjustable panel 220.

[0039] In some embodiments, refer to Figure 5 , 6The drive assembly 320 connects the output shaft of the motor 321 to the input end of the multi-stage planetary reducer 322. Inside the multi-stage planetary reducer 322, multiple planetary gear sets 3222 are arranged in series. In each planetary gear set 3222, the sun gear 3221 is located at the center, and the multiple planetary gears 3222 are evenly distributed around and mesh with the sun gear 3221. The planet carrier 3223 serves as a support structure for the planetary gears 3222, fixing each planetary gear 3222 in its relative position. When the motor 321 starts, the motor 321 shaft drives the sun gear 3221 of the first-stage planetary gear set 3222 to rotate. While the moving planetary gear 3222 revolves around the sun gear 3221, the planetary gear 3222 also rotates on its own axis. The planet carrier 3223 collects the revolution motion of the planetary gear 3222 and outputs the reduced rotation. The planet carrier 3223 of the first-stage planetary gear 3222 group is connected to the sun gear 3221 of the second-stage planetary gear 3222 group via a shaft connection or key connection. This process continues, with each stage of the planetary gear 3222 group forming a cascaded reduction transmission. The planet carrier 3223 of the last stage of the planetary gear 3222 group is fixedly connected to the output gear 325 via a key connection or bolt connection. The output gear 325 transmits the multi-stage reduced rotation to the fixed transmission component 330. After the high-speed rotation of the motor 321 is reduced in speed and torque through the multi-stage planetary reducer 322, the output gear 325 drives the pitch angle adjustment in a low-speed, high-torque manner.

[0040] In some embodiments, the drive assembly 320 employs a hybrid drive method combining a first-stage helical gear with helical satellite gears and subsequent spur gears. The first-stage helical gear transmission provides a smoother meshing process because the helix angle of the helical gears allows for gradual engagement and disengagement during gear meshing, reducing impact and vibration. Simultaneously, the higher overlap ratio of the helical gears allows them to withstand greater loads and reduce noise levels. The subsequent spur gear design simplifies the manufacturing process, reduces manufacturing costs, and since spur gears do not generate axial force during transmission, the additional load requirements on the bearing 311 are reduced.

[0041] In some embodiments, refer to Figure 2-6The rotating part 200 is integrated into the housing 210. The adjustable panel 220 is bolted or snapped to the top of the housing 210 for mounting. Inside the housing 210, a mounting plate 230 is welded or bolted to serve as the mounting base for the drive assembly 320. The drive assembly 320 is secured inside the housing 210 by bolts passing through pre-drilled holes in the mounting plate 230 and tightening with nuts. The output end of the drive assembly 320 is equipped with an output gear 325, which is machined with standard involute teeth. The fixed transmission component... 330 is fixedly connected to the rotating shaft 310 by a key connection or interference fit. The fixed transmission component 330 is machined with arc-shaped teeth 331. The tooth profile parameters of the arc-shaped teeth 331 match those of the output gear 325 and maintain an appropriate tooth backlash. When the drive component 320 is started, the output gear 325 meshes with the arc-shaped teeth 331 of the fixed transmission component 330. Since the position of the fixed transmission component 330 is fixed, the output gear 325 can only move in a circle along the arc-shaped teeth 331, thereby causing the entire housing 210 and the adjustable panel 220 to deflect at an angle around the rotating shaft 310.

[0042] In some embodiments, a reduction assembly 340 is further included between the drive assembly 320 and the fixed transmission member 330. The reduction assembly 340 includes a reduction shaft 341 fixedly connected to the mounting plate 230 and a reduction gear 342. The reduction gear 342 includes a large-diameter gear and a small-diameter gear. The large-diameter gear meshes with the output gear 325 of the drive assembly 320, and the small-diameter gear meshes with the arc-shaped tooth portion 331 of the fixed transmission member 330.

[0043] Understandably, the reduction assembly 340 is fixedly connected to the mounting plate 230 by means of bearing 311 housing or bearing 311 fitting. The reduction shaft 341 maintains stable rotational motion in the preset holes on the mounting plate 230. At the same time, the reduction gear 342 uses integrated machining or heat fitting to fix the large-diameter gear and the small-diameter gear on the reduction shaft 341 to form a gear combination of different diameters. The tooth profile parameters of the large-diameter gear match the output gear 325 of the drive assembly 320 and mesh with it through a standard center distance, while the small-diameter gear... The tooth profile of the wheel maintains an appropriate meshing clearance and correct pressure angle with the arc-shaped toothed portion 331 of the fixed transmission component 330. When the drive assembly 320 is started, the output gear 325 drives the large-diameter gear to rotate. The large-diameter gear transmits the rotation to the small-diameter gear through the reduction shaft 341. Since the diameter of the large-diameter gear is larger than that of the small-diameter gear, the entire reduction gear 342 assembly achieves a further reduction and torque increase effect. The small-diameter gear then meshes with the arc-shaped toothed portion 331 of the fixed transmission component 330, driving the entire rotating part 200 to change angle around the rotation shaft 310.

[0044] In some embodiments, refer to Figure 4 , 5 The rotating shaft 310 has bearing 311 mounting positions at both ends, and the housing 210 has bearing 311 seat holes at the corresponding positions. The bearing 311 seat holes and the bearing 311 outer ring are fitted together. The bearing 311 is a deep groove ball bearing 311 or an angular contact ball bearing 311. The inner ring of the bearing 311 is press-fitted to the bearing 311 mounting position of the rotating shaft 310 through heat fitting or heat fitting. The outer ring of the bearing 311 is transition-fitted or lightly interference-fitted to the bearing 311 seat hole of the housing 210. After installation, the rotating shaft 310 can rotate smoothly relative to the housing 210 with the support of the bearing 311. The bearing 311 greatly reduces the rotational resistance and provides reliable radial and axial load capacity. When the transmission mechanism 300 is working, the rotating shaft 310 bears the reaction force from the fixed transmission component 330 and the gravity load of the adjustable panel 220. The bearings 311 at both ends jointly bear these loads and ensure that the rotating shaft 310 maintains a stable rotation center within the housing 210.

[0045] In some embodiments, refer to Figure 3The housing 210 adopts a split design, dividing the overall structure into an upper housing 210 and a lower housing 210. The upper and lower housings 210 are connected by bolts or snap-fit ​​connections to achieve detachable assembly, facilitating the installation and maintenance of internal components. The mounting plate 230 is fixedly installed in a preset position inside the housing 210 by bolts or welding to provide a stable mounting base for the drive assembly 320. Meanwhile, a window 211 is opened on the side wall of the housing 210. The size of the window 211 is determined according to assembly requirements. The fixing base 110 of the fixing part 100 is mechanically connected to the rotating shaft 310 through the window 211. The design of the window 211 also facilitates the assembly and adjustment of the rotating shaft 310. A limiting block 231 is installed on the mounting plate 230 by welding or bolting. The limiting block 231 has a rectangular or circular protrusion structure that protrudes from the surface of the mounting plate 230. A limiting rod 212 is installed at a corresponding position on the inner wall of the housing 210. The limiting rod 212 has a columnar or plate-like structure and is fixed to the inner wall of the housing 210. When the angle between the rotating part 200 and the fixed part 100 changes, the mounting plate 230 rotates accordingly. During the rotation, the limiting block 231 will contact both sides of the limiting rod 212. The mechanical contact between the limiting block 231 and the two sides of the limiting rod 212 restricts the continued rotation, thereby limiting the maximum rotation range of the rotating part 200 relative to the fixed part 100.

[0046] In some embodiments, refer to Figure 5 The fixing part 100 has a retaining ring 120 pre-set at one end away from the fixing base 110. The retaining ring 120 is an open elastic ring made of spring steel. Under its own elasticity, the retaining ring 120 forms a transition fit with the rotating shaft 310. The transition fit controls the dimensional relationship between the outer diameter of the rotating shaft 310 and the inner diameter of the retaining ring 120, so that the rotating shaft 310 can rotate under the constraint of the retaining ring 120 but needs to overcome a certain frictional resistance. When the drive assembly 320 is working, the drive torque generated by the motor 321 is sufficient to overcome the frictional resistance of the retaining ring 120 to achieve normal pitch adjustment. When the drive assembly 320 stops working, the operator can manually apply an appropriate external force to overcome the resistance of the retaining ring 120 and directly turn the rotating shaft 310 to achieve manual angle adjustment. The elastic characteristics of the retaining ring 120 provide moderate damping for manual adjustment and maintain position stability after adjustment.

[0047] 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 damped pitch adjustment device, characterized in that, include: Fixed parts, rotating parts, transmission mechanisms, and torque transmission components; The fixing part includes a fixing base for connecting to an external structure; The rotating part includes an adjustable panel and a housing, wherein the adjustable panel is used to support external equipment and is installed in conjunction with the housing; The transmission mechanism includes a rotating shaft, a drive assembly, a fixed transmission component, and a reduction assembly. The rotating shaft connects the fixed part and the rotating part. The drive assembly is fixed inside the housing by a mounting plate. The fixed transmission component is disposed on the rotating shaft and is in transmission cooperation with the drive assembly through the reduction assembly. One end of the torque transmission component is transitionally fitted to the rotating shaft, and the other end is interference-fitted to the deceleration shaft of the deceleration assembly. When the drive component rotates, the rotational part changes angle relative to the fixed part through the transmission cooperation of the deceleration component and the fixed transmission component, thereby realizing the pitch adjustment of the adjustable panel.

2. The damping pitch adjustment device according to claim 1, characterized in that, The torque transmission component is a sheet-like structure, including at least one torque transmission sheet. Each torque transmission sheet includes a first connecting end and a second connecting end. The first connecting end is provided with a first opening groove, and the second connecting end is provided with a second opening groove. The inner diameter of the first opening groove forms a transition fit with the outer diameter of the rotating shaft, and the inner diameter of the second opening groove forms an interference fit with the outer diameter of the deceleration rotating shaft.

3. The damping pitch adjustment device according to claim 2, characterized in that, The torque transmission component includes 2-7 torque transmission plates, which are coaxially stacked. The damping torque is adjusted by changing the number of torque transmission plates.

4. The damping pitch adjustment device according to claim 1, characterized in that, The deceleration assembly includes a deceleration shaft and a deceleration gear. The deceleration gear includes a large-diameter gear and a small-diameter gear. The large-diameter gear meshes with the output gear of the drive assembly, and the small-diameter gear meshes with the arc-shaped teeth of the fixed transmission member.

5. The damping pitch adjustment device according to claim 1, characterized in that, The drive assembly includes a motor and a multi-stage planetary reducer. The multi-stage planetary reducer includes multiple planetary gear sets. Each planetary gear set includes a sun gear, planetary gears, and a planet carrier. The planet carriers of adjacent planetary gear sets are connected to the sun gears. The planet carrier of the last planetary gear set is connected to an output gear.

6. The damping pitch adjustment device according to claim 1, characterized in that, Bearings are provided at both ends of the rotating shaft, and the rotating shaft is rotatably connected to the housing through the bearings.

7. The damping pitch adjustment device according to claim 1, characterized in that, The housing has a split structure, and the mounting plate is fixedly installed inside the housing; The housing has a window, and the fixing part is connected to the rotating shaft through the window; Limit blocks are provided on the mounting plate; A limit rod is provided on the housing; The limiting block can contact both sides of the limiting rod to limit the rotation stroke of the rotating part relative to the fixed part.

8. The damping pitch adjustment device according to claim 1, characterized in that, The drive assembly is equipped with a Hall plate and a magnetic ring. The Hall plate is used to detect changes in the magnetic field of the magnetic ring to obtain the rotational position information of the drive assembly, thereby realizing the control of the pitch angle of the adjustable panel.

9. The damping pitch adjustment device according to claim 1, characterized in that, A retaining ring is provided at the end of the fixing part away from the fixing base, and the rotating shaft is transitionally fitted with the retaining ring.

10. The damping pitch adjustment device according to claim 1, characterized in that, The adjustable panel is provided with a data exchange position and a magnetic array. The data exchange position is used for data transmission with external devices, and the magnetic array is used for magnetically attracting external devices.

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