Axial rotation device for a circulation fan
Patent Information
- Application Number
- CN202521938273.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-09-09
AI Technical Summary
[0003]但是为了让循环扇能沿着轴向转动，才能让吹出的风能到达各个角落，但是现如今的设计，是让风扇头进行转动，由于风扇头内装有电机和扇叶，其本身重心位置是位于更重的电机处，在转动的过程中会产生垂直切向力，从而使得风扇本身不够平稳
[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting the rotating component on the bracket, located in the middle of the entire circulating fan, unlike the prior art which sets the rotating component on the top of the fan head, this structure can largely change the problem of the fan head's center of gravity shifting backward, which leads to unstable placement. Moreover, by setting the motor in the center, the change of the center of gravity can be avoided, and the drive rotation is achieved through the meshing of gears and racks.
Smart Images
Figure CN224729786U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an axial rotation device for a circulating fan. Background Technology
[0002] An air circulator fan is somewhat like a turbine engine on an airplane. Its main structure includes a drive motor, a turbine fan, a baffle grille, and a cylindrical casing. Unlike ordinary fans, air circulator fans can blow air out in a spiral shape in a specific direction. As the fan blades churn, they ultimately create a spiral column of air. The air circulator fan can blow air over a longer distance and has good directionality.
[0003] However, in order for the circulating fan to rotate along the axis so that the blown air can reach every corner, the current design allows the fan head to rotate. Since the fan head contains the motor and fan blades, its center of gravity is located at the heavier motor. During the rotation, a vertical tangential force is generated, which makes the fan itself less stable. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an axial rotation device for a circulating fan. By separating the rotating component and the fixed component, the structure is set on the bracket instead of the fan head, thus achieving a more stable effect during axial rotation.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An axial rotation device for a circulating fan includes a fan assembly, a rotating assembly, and a bracket. The fan assembly is rotatably connected to the bracket via the rotating assembly. The fan assembly consists of a fan head and a rear cover. The rear cover is detachably connected to the fan head and forms a clamping groove at its lower end. The rotating assembly includes a rotating component, a fixed component, and a motor. The rotating component is rotatably connected to the upper end of the fixed component. The motor is disposed within the fixed component, and its output end drives the rotating component to rotate. The rotating component is connected within the clamping groove. The lower end of the fixed component is connected to the bracket.
[0006] The fixing component includes a fixing seat, a support shaft, and a top cover. The lower end of the fixing seat is detachably connected to the bracket. The upper end face of the fixing seat is slidably connected to the lower end face of the rotating component. A downwardly recessed receiving cavity is provided at the center of the upper end face of the fixing seat. The motor is embedded in the receiving cavity, and the output end of the motor extends upward from the fixing seat and drives the rotating component to rotate on the fixing seat. A gear is provided on the output end of the motor, and a rack is provided on the fixing seat. The gear and the rack are meshed together. The support shaft is detachably connected to the upper end face of the fixing seat and is located at the center of the fixing seat. The center of the rotating component has a through hole that runs vertically through it. The rotating component is fitted into the outer side wall of the support shaft through the through hole, and the rack is provided on the inner side wall of the through hole. A limiting post is provided on the outer side wall of the support shaft, and a limiting groove is provided on the inner side wall of the through hole. The limiting post is fitted into the limiting groove. The top cover is detachably connected to the support shaft. The top cover and the fixing seat enclose the rotating component in the middle.
[0007] The axial rotation device of the circulating fan with this structure has a support bracket standing on the ground for stability. The fan and drive unit are both located inside the fan head. The fan head and the rear cover are connected to each other and clamp and fix the rotating part on the rotating assembly. The rotating part inside the rotating assembly is driven by the motor on the fixed component to rotate. In order to achieve rotation, the rotating part and the fan assembly must first be fixed. Therefore, a clamping groove is formed at the lower end of the fan head and the rear cover. The rotating part can be fixed in the clamping groove by embedding or screwing. Secondly, the fixed component and the support must be fixed. An external thread is provided on the lower end face of the fixed base and an internal threaded hole is provided on the upper end of the support. The external thread is screwed into the internal threaded hole to achieve a fixed connection between the fixed base and the support.
[0008] To facilitate motor-driven rotation of the rotating component, a recessed cavity is first provided on the upper surface of the fixed base. After the motor is embedded in the cavity, its output end extends upward out of the fixed base. To ensure that the rotating component can rotate around the center, a support shaft is provided on the upper surface of the fixed base. The support shaft is located at the center of the fixed base, and the through hole at the center of the rotating component fits onto the outer wall of the support shaft. Therefore, the rotating component can rotate around the support shaft as the center of rotation. To facilitate motor-driven rotation of the rotating component, a rack is provided on the inner wall of the through hole, and a gear is provided on the upward-extending motor output end. The rotation of the rotating component is achieved by the meshing of the gear and the rack. To prevent the rotating component from displacing upward and detaching from the motor's drive, a top cover is provided on the upper surface of the support shaft. The top cover and the fixed base enclose the rotating component, preventing it from detaching vertically. Since the fan head does not rotate 360°, it is necessary to limit the rotation angle of the fan head. A limiting post is set on the outer wall of the support shaft. The limiting post is matched with the limiting groove in the through hole. Therefore, the fan head is constrained by the limiting groove during rotation and can only maintain a certain range.
[0009] Furthermore, the rotating assembly also includes a sliding member. The upper end face of the fixed base is provided with an annular lower groove, and the lower end face of the rotating member is provided with an annular upper groove. The sliding member is embedded between the lower groove and the upper groove and is slidably connected. The sliding member includes a rolling ring and a plurality of balls. The rolling ring is provided with a plurality of circumferentially distributed rolling holes. The balls are movably connected in the rolling holes. The rolling ring is located between the lower groove and the upper groove. The upper and lower ends of the plurality of balls abut against the upper groove and the lower groove, respectively.
[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting the rotating component on the bracket, located in the middle of the entire circulating fan, unlike the prior art which sets the rotating component on the top of the fan head, this structure can largely change the problem of the fan head's center of gravity shifting backward, which leads to unstable placement. Moreover, by setting the motor in the center, the change of the center of gravity can be avoided, and the drive rotation is achieved through the meshing of gears and racks. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a perspective view of the present utility model; Figure 2This is a front-view exploded view of the present invention; Figure 3 This is an exploded view of the rearview concealed cover and bracket of this utility model. Figure 4 This is a top-view exploded view of the rotating component of this utility model; Figure 5 This is a bottom-view exploded view of the rotating component of this utility model.
[0013] The components include: 1. Fan assembly; 11. Fan head; 12. Rear cover; 13. Hoop groove; 2. Rotating assembly; 21. Rotating component; 211. Through hole; 2111. Limiting groove; 212. Upper groove; 22. Fixing component; 221. Fixing seat; 2211. Receiving cavity; 2212. Rack; 2213. Lower groove; 222. Support shaft; 2221. Limiting post; 223. Top cover; 23. Motor; 231. Gear; 24. Sliding component; 241. Rolling ring; 242. Ball bearing; 3. Bracket. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0015] The specific embodiments of this utility model will now be described with reference to the accompanying drawings: like Figure 1-5 As shown, an axial rotation device for a circulating fan includes a fan assembly 1, a rotating assembly 2, and a bracket 3. The fan assembly 1 is rotatably connected to the bracket 3 via the rotating assembly 2. The fan assembly 1 consists of a fan head 11 and a rear cover 12. The rear cover 12 is detachably connected to the fan head 11 and forms a clamping groove 13 at its lower end. The rotating assembly 2 includes a rotating component 21, a fixed component 22, and a motor 23. The rotating component 21 is rotatably connected to the upper end of the fixed component 22. The motor 23 is disposed within the fixed component 22 and its output end drives the rotating component 21 to rotate. The rotating component 21 is connected within the clamping groove 13. The lower end of the fixed component 22 is connected to the bracket 3.
[0016] The fixing component 22 includes a fixing seat 221, a support shaft 222, and a top cover 223. The lower end of the fixing seat 221 is detachably connected to the bracket 3. The upper end face of the fixing seat 221 is slidably connected to the lower end face of the rotating component 21. A downwardly recessed receiving cavity 2211 is provided at the center of the upper end face of the fixing seat 221. The motor 23 is embedded in the receiving cavity 2211. The output end of the motor 23 extends upward out of the fixing seat 221 and drives the rotating component 21 to rotate on the fixing seat 221. A gear 231 is provided on the output end of the motor 23, and a rack 2212 is provided on the fixing seat 221. The gear 231 and the rack 2212 are meshed together. The support shaft 222 is detachably connected to the upper end face of the fixed base 221 and located at the center of the fixed base 221. The center of the rotating member 21 is a through hole 211 that runs vertically through it. The rotating member 21 is fitted into the outer side wall of the support shaft 222 through the through hole 211. The rack 2212 is provided on the inner side wall of the through hole 211. The outer side wall of the support shaft 222 is provided with a limiting post 2221, and the inner side wall of the through hole 211 is provided with a limiting groove 2111. The limiting post 2221 is fitted into the limiting groove 2111. The top cover 223 is detachably connected to the support shaft 222. The top cover 223 and the fixed base 221 enclose the rotating member 21 in the middle.
[0017] Furthermore, the rotating assembly 2 also includes a sliding member 24. The upper end face of the fixed base 221 is provided with an annular lower groove 2213, and the lower end face of the rotating member 21 is provided with an annular upper groove 212. The sliding member 24 is embedded between the lower groove 2213 and the upper groove 212 and is slidably connected. The sliding member 24 includes a rolling ring 241 and a plurality of balls 242. The rolling ring 241 is provided with a plurality of circumferentially distributed rolling holes. The balls 242 are movably connected in the rolling holes. The rolling ring 241 is located between the lower groove 2213 and the upper groove 212. The upper and lower ends of the plurality of balls 242 respectively abut against the upper groove 212 and the lower groove 2213.
[0018] Description of the working principle of this utility model: The axial rotation device of the circulating fan with this structure has a support 3 standing on the ground to provide stable support. The fan and drive device are both located inside the fan head 11. The fan head 11 and the rear cover 12 are connected to each other and clamp and fix the rotating part 21 on the rotating assembly 2. The rotating part 21 in the rotating assembly 2 is driven by the motor 23 on the fixing member 22 to rotate. In order to achieve rotation, the rotating part 21 needs to be fixed to the fan assembly 1 first. Therefore, a clamping groove 13 is formed at the lower end of the fan head 11 and the rear cover 12. The rotating part 21 can be fixed in the clamping groove 13 by embedding or screwing. Secondly, the fixing member 22 needs to be fixed to the support 3. An external thread is provided on the lower end surface of the fixing seat 221 and an internal thread hole is provided on the upper end of the support 3. The external thread is screwed into the internal thread hole to achieve a fixed connection between the fixing seat 221 and the support 3.
[0019] To facilitate the driving of the rotating component 21 by the motor 23, a downwardly recessed receiving cavity 2211 is first provided on the upper end surface of the fixed base 221. After the motor 23 is embedded in the receiving cavity 2211, its output end extends upward out of the fixed base 221. To ensure that the rotating component 21 can rotate around the center, a support shaft 222 is provided on the upper end surface of the fixed base 221. The support shaft 222 is located at the center of the fixed base 221, and the through hole 211 at the center of the rotating component 21 fits onto the outer wall of the support shaft 222. Therefore, the rotation of the rotating component 21 can be centered on the support shaft 222. The rotation center rotates. To facilitate the rotation of the rotating component 21 driven by the motor 23, a rack 2212 is provided on the inner wall of the through hole 211, and a gear 231 is provided on the upward-extending output end of the motor 23. The rotation of the rotating component 21 is achieved by the meshing of the gear 231 and the rack 2212. To prevent the rotating component 21 from displacing upward and detaching from the drive of the motor 23, a top cover 223 is provided on the upper end face of the support shaft 222. The top cover 223 and the fixed seat 221 enclose the rotating component 21, preventing the rotating component 21 from detaching vertically. Since the fan head 11 does not rotate 360°, it is necessary to limit the rotation angle of the fan head 11. A limiting post 2221 is provided on the outer wall of the support shaft 222. The limiting post 2221 cooperates with the limiting groove 2111 in the through hole 211. Therefore, during the rotation of the fan head 11, it is constrained by the limiting groove 2111 and can only maintain a certain range.
[0020] To ensure smoother rotation between the rotating component 21 and the fixed base 221, an upper groove 212 is provided on the lower end face of the rotating component 21, and a lower groove 2213 is provided on the upper end face of the fixed base 221. A rolling ring 241 is placed between the annular upper groove 212 and the lower groove 2213. The circumferentially distributed balls 242 on the rolling ring 241 can effectively reduce the friction between the upper groove 212 and the lower groove 2213 during direct rotation, and also maintain their stability.
[0021] The beneficial effects of this utility model are as follows: By setting the rotating component 2 on the bracket 3, located in the middle of the entire circulating fan, unlike the prior art where the rotating component is set on the top fan head 11, this structure can largely change the problem of the fan head 11's center of gravity shifting backward, which leads to unstable placement. Moreover, by setting the motor 23 in the center, the change of the center of gravity can be avoided, and the drive rotation is achieved through the meshing of the gear 231 and the rack 2212.
[0022] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An axial rotation device for a circulating fan, characterized in that: The device includes a fan assembly, a rotating assembly, and a bracket. The fan assembly is rotatably connected to the bracket via the rotating assembly. The fan assembly consists of a fan head and a rear cover. The rear cover is detachably connected to the fan head and forms a clamping groove at its lower end. The rotating assembly includes a rotating component, a fixed component, and a motor. The rotating component is rotatably connected to the upper end of the fixed component. The motor is disposed within the fixed component and its output end drives the rotating component to rotate. The rotating component is connected within the clamping groove. The lower end of the fixed component is connected to the bracket.
2. The axial rotation device for the circulating fan according to claim 1, characterized in that: The fixing component includes a fixing seat, the lower end of which is detachably connected to the bracket. The upper end face of the fixing seat is slidably connected to the lower end face of the rotating component. A downwardly recessed receiving cavity is provided at the center of the upper end face of the fixing seat. The motor is embedded in the receiving cavity. The output end of the motor extends upward out of the fixing seat and drives the rotating component to rotate on the fixing seat.
3. The axial rotation device for the circulating fan according to claim 2, characterized in that: The motor has a gear at its output end and a rack on its fixed base. The gear and the rack are meshed together.
4. The axial rotation device for the circulating fan according to claim 3, characterized in that: The fixing component also includes a support shaft, which is detachably connected to the upper end face of the fixing seat and located at the center of the fixing seat. The center of the rotating component is a through hole running vertically through it. The rotating component is fitted into the outer side wall of the support shaft through the through hole. The rack is set on the inner side wall of the through hole.
5. The axial rotation device for the circulating fan according to claim 4, characterized in that: The outer side wall of the support shaft is provided with a limiting post, and the inner side wall of the through hole is provided with a limiting groove, and the limiting post is fitted into the limiting groove.
6. The axial rotation device for the circulating fan according to claim 5, characterized in that: The fixing component also includes a top cover, which is detachably connected to the support shaft, and the top cover and the fixing seat enclose the rotating part in the middle.
7. The axial rotation device for the circulating fan according to claim 6, characterized in that: The rotating assembly further includes a sliding member. The upper end face of the fixed base is provided with an annular lower groove, and the lower end face of the rotating member is provided with an annular upper groove. The sliding member is embedded between the lower groove and the upper groove and is slidably connected.
8. The axial rotation device for the circulating fan according to claim 7, characterized in that: The sliding component includes a rolling ring and a plurality of balls. The rolling ring has a plurality of circumferentially distributed rolling holes. The balls are movably connected in the rolling holes. The rolling ring is located between the lower groove and the upper groove. The upper and lower ends of the plurality of balls abut against the upper groove and the lower groove, respectively.