A fan for omnidirectional air supply

Abstract

The utility model discloses a fan of omni -directional air supply, including support, fan main part and gravity compensator, the rear portion of fan main part is equipped with the front -back turnover motor for driving fan main part swing relative to support, front -back turnover motor drive connection horizontal fixed gear, and gravity compensator includes fixed block, rotates the sleeve, rear stroke balance torsional spring and front stroke balance torsional spring, and fixed block installs on the support, and rotates the sleeve and installs on fan main part, and one end of rear stroke balance torsional spring is positioned and is connected with the sleeve, and the other end arc line of rear stroke balance torsional spring corresponds and is arranged in rear stroke hanging groove sliding, and one end of front stroke balance torsional spring is positioned and is connected with the sleeve, and the other end arc line of front stroke balance torsional spring corresponds and is arranged in front stroke hanging groove sliding. The utility model is favorable for reducing the manufacturing cost of fan, is favorable for energy -conserving, and can horizontal whole week rotation and change direction and send air, can also send air in front -back turnover change direction, realizes the omni -directional air supply effect.

Description

Technical Field

[0001] This utility model relates to the field of fans, specifically to an omnidirectional fan. Background Technology

[0002] Currently, some fan blades can swing up and down to adjust the air delivery angle, and some fans have an electric up-and-down swing function. Since the main body of the fan includes the fan housing, fan blades, and fan blade motor, the main body of the fan is relatively heavy. The drive motor for the up-and-down swing needs to have a large output torque to overcome the torque of the weight of the fan body on the swing axis to drive the fan body to swing up and down. This not only increases the cost, but also leads to a large power consumption in the later use, which is not conducive to the energy saving of the fan. Therefore, it is necessary to improve the existing fan technology. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an omnidirectional airflow fan, which helps to reduce the manufacturing cost of the fan and save energy.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] This utility model discloses an omnidirectional air-dissipating fan, including a bracket, a fan body, and a gravity balancer. The rear of the fan body is hinged to the bracket, and a horizontal fixed gear is provided on the bracket. The rear of the fan body is provided with a front-to-back rotating motor for driving the fan body to swing relative to the bracket. The front-to-back rotating motor is driven and connected to the horizontal fixed gear. The gravity balancer includes a fixed block, a rotating sleeve, a rear stroke balance torsion spring, and a front stroke balance torsion spring. The fixed block is mounted on the bracket, and the rotating sleeve is mounted on the fan body. One end of the fixed block forms a rear stroke mounting groove, and the corresponding other end of the fixed block forms a front stroke mounting groove. One end of the rear stroke balance torsion spring is positioned and connected to the rotating sleeve, and the corresponding other end of the rear stroke balance torsion spring is slidably disposed in the rear stroke mounting groove. One end of the front stroke balance torsion spring is positioned and connected to the rotating sleeve, and the corresponding other end of the front stroke balance torsion spring is slidably disposed in the front stroke mounting groove.

[0006] Preferably, the rear of the fan body is provided with a rear cover, a side protrusion is formed on the outer side of the rear cover, a flip-limiting groove is formed on the bracket, and the side protrusion is disposed in the flip-limiting groove.

[0007] Preferably, the upper part of the bracket is provided with a fork arm, the rear cover is hinged to the inner side of the fork arm, and the horizontal fixed gear is arranged on the opposite side of the fixed block.

[0008] Preferably, the rotating sleeve and the front and rear tilting motor are mounted on the inner wall of the rear cover, and the horizontal fixed gear is embedded inside the fork arm.

[0009] Preferably, the upper end of the fork arm is disc-shaped, the rear end of the rear cover is arc-shaped, and the rear end of the rear cover is coaxially and flush with the upper end of the fork arm.

[0010] Preferably, the fixed block is formed with a hinge shaft portion, and the rotating sleeve is adapted to rotatably disposed on the hinge shaft portion.

[0011] Preferably, the fixed block includes an end block, which is installed at the end of the hinge shaft, the front stroke groove is formed on the end block, and the rear stroke balance torsion spring and the front stroke balance torsion spring are respectively located on both sides of the rotating sleeve.

[0012] Preferably, the fan of this utility model further includes a base, the lower end of the bracket is horizontally rotatably connected to the base, a vertical moving gear is installed at the lower end of the bracket, a horizontal rotating motor is installed on the base, a horizontal rotating gear is installed on the output shaft of the horizontal rotating motor, and the horizontal rotating gear is externally meshed with the vertical moving gear.

[0013] Preferably, the base is provided with a horizontal rotation limiting main groove, the bottom of the vertical moving gear is formed with a horizontal rotation limiting secondary groove, a limiting turntable is provided on the lower side of the vertical moving gear, an upper protrusion is formed on the upper side of the limiting turntable, a lower protrusion is formed on the lower side of the limiting turntable, the lower protrusion is slidably disposed in the horizontal rotation limiting main groove, and the upper protrusion is slidably disposed in the horizontal rotation limiting secondary groove.

[0014] Preferably, the base includes a chassis and a cover, the cover being placed on the chassis, a horizontal rotating support plate being mounted on the upper side of the chassis, a horizontal limiting main groove being formed on the horizontal rotating support plate, a vertical shaft portion being formed on the horizontal rotating support plate, a flange being formed at the lower end of the bracket, the vertical shaft portion being connected to the bracket via a rolling bearing, the flange being mounted on the upper side of the vertical moving gear, a limiting turntable being sleeved on the vertical shaft portion, the flange, the vertical moving gear, and the horizontal rotating support plate being disposed within the cavity formed by the chassis and the cover, and the bracket passing through the cover.

[0015] Compared with the prior art, the advantages of this utility model are as follows: By setting up a bracket, a fan body, and a gravity balancer, the rear of the fan body is hinged to the bracket, and the rear of the fan body is provided with a front-to-back rotating motor for driving the fan body to swing relative to the bracket. The gravity balancer includes a fixed block, a rotating sleeve, a rear stroke balance torsion spring, and a front stroke balance torsion spring. The fixed block is installed on the bracket, and the rotating sleeve is installed on the fan body. One end of the fixed block forms a rear stroke hanging groove, and the corresponding other end of the fixed block forms a front stroke hanging groove. One end of the rear stroke balance torsion spring is positioned and connected to the rotating sleeve, and the corresponding other end of the rear stroke balance torsion spring is slidably disposed in the rear stroke hanging groove. One end of the front stroke balance torsion spring is positioned and connected to the rotating sleeve, and the corresponding other end of the front stroke balance torsion spring is slidably disposed in the front stroke hanging groove. This allows the gravity balancer to balance the weight of the fan body, which helps to reduce the manufacturing cost of the fan and is beneficial to energy saving. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the back of the fan of this utility model.

[0017] Figure 2 This is a cross-sectional view of the fan of this utility model from the left view direction.

[0018] Figure 3 for Figure 2 A partial structural diagram at point A.

[0019] Figure 4 This is an exploded view of the fan of this utility model.

[0020] Figure 5 This is a cross-sectional view of the fan of this utility model from the rear view direction.

[0021] Figure 6 This is a rear top-view perspective structural diagram of the fan of this utility model with the back cover removed.

[0022] Figure 7 This is a left-side exploded view of the gravity balancer of this utility model.

[0023] Figure 8 This is a right-side exploded view of the gravity balancer of this utility model.

[0024] Figure 9 This is a three-dimensional structural diagram of the fork arm of this utility model.

[0025] Figure 10 This is a top exploded view of the base of this utility model with the cover removed.

[0026] Figure 11 This is a top-view three-dimensional structural diagram of the horizontal rotating support disk of this utility model.

[0027] Figure 12 This is a three-dimensional structural diagram of the limiting turntable of this utility model.

[0028] Figure 13 This is a bottom-view three-dimensional structural diagram of the vertical moving gear of this utility model.

[0029] Labeling: Base 1; Chassis 11; Cover 12; Horizontal Rotation Support Plate 13; Vertical Shaft 131; Horizontal Rotation Limiting Main Groove 1301; Protruding Stop 1302; Limiting Turntable 14; Lower Protrusion 141; Upper Protrusion 142; Vertical Moving Gear 15; Horizontal Rotation Limiting Secondary Groove 1501; Rolling Bearing 16; Upper End Cover 17; Horizontal Rotation Motor 18; Horizontal Rotation Gear 19; Bracket 2; Flange 201; Fork Arm 21; Horizontal Fixed Gear 211; Flip-over limiting groove 2101; Fan body 3; Rear cover 31; Side protrusion 311; Fan casing 32; Impeller 33; Front and rear flip motor 34; Flip-over drive gear 35; Impeller motor 36; Gravity balancer 4; Fixed block 41; Rear stroke hanging groove 4101; Hinge shaft 411; End block 412; Front stroke hanging groove 4121; Rotating sleeve 42; Hook hole 421; Rear stroke balance torsion spring 44; Front stroke balance torsion spring 45. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings.

[0031] This utility model relates to an omnidirectional airflow fan, such as... Figures 1 to 6 As shown, the device includes a bracket 2, a fan body 3, and a gravity balancer 4. The rear of the fan body 3 is hinged to the bracket 2. The hinge axis between the fan body 3 and the bracket 2 is horizontal. A horizontal fixed gear 211 is provided on the bracket 2. That is to say, the "horizontal" in "horizontal fixed gear 211" refers to the horizontal axis of the horizontal fixed gear 211. The horizontal fixed gear 211 is fixed relative to the bracket 2. The horizontal fixed gear 211 is located on the hinge axis between the fan body 3 and the bracket 2. In other words, the rotation axis of the horizontal fixed gear 211 relative to the fan body 3 coincides with the hinge axis between the fan body 3 and the bracket 2. Figure 6As shown, the rear of the fan body 3 is provided with a front-to-back tilting motor 34 for driving the fan body 3 to swing relative to the support 2. That is to say, the front-to-back tilting motor 34 is used to drive the fan body 3 to swing relative to the support 2 around the aforementioned hinge axis, and the fan body 3 can tilt and swing back and forth. That is to say, the air delivery direction of the fan body 3 can swing from forward and downward to vertically upward, and then swing to backward and downward. The total angle stroke of the front-to-back tilting of the fan body 3 can be set to be greater than or equal to 180° to 190°, which can avoid interference between the lower end of the fan body 3 and the support 2. The front-to-back tilting motor 34 drives the horizontal fixed gear 211. Specifically, a tilting drive gear 35 is mounted on the output shaft of the front-to-back tilting motor 34. The tilting drive gear 35 is internally meshed with the horizontal fixed gear 211. The horizontal fixed gear 211 is an internal gear, so the number of teeth on the horizontal fixed gear 211 is significantly greater than the number of teeth on the tilting drive gear 35. The transmission between the tilting drive gear 35 and the horizontal fixed gear 211 has a torque-increasing effect, which relatively helps to reduce the output torque of the front-to-back tilting motor 34. Since the tilting drive gear 35 is internally meshed with the horizontal fixed gear 211, the space occupied by the combination of the tilting drive gear 35 and the horizontal fixed gear 211 can be reduced. The front-to-back tilting motor 34 can be a stepper motor, which can drive the fan body 3 to swing back and forth.

[0032] like Figures 5 to 8 As shown, the gravity balancer 4 includes a fixed block 41, a rotating sleeve 42, a rear stroke balance torsion spring 44, and a front stroke balance torsion spring 45. The fixed block 41 is mounted on the bracket 2 by corresponding screws, and the rotating sleeve 42 is mounted on the fan body 3 by corresponding screws. One end of the fixed block 41 forms a rear stroke mounting groove 4101, and the corresponding other end of the fixed block 41 forms a front stroke mounting groove 4121. One end of the rear stroke balance torsion spring 44 is positioned and connected to the rotating sleeve 42, and the corresponding other end of the rear stroke balance torsion spring 44 is slidably disposed in the rear stroke mounting groove 4101. Specifically, the ends of the rear stroke balance torsion spring 44 are respectively provided with hook rods that are approximately parallel to the hinge axis. The rotating sleeve 42 has a hook hole 421. The hook portion of one end of the rear stroke balance torsion spring 44 is inserted into the corresponding hook hole 421, and the hook portion of the other end of the rear stroke balance torsion spring 44 is inserted into the rear stroke hanging groove 4101. One end of the front stroke balance torsion spring 45 is positioned and connected to the rotating sleeve 42, and the other end of the front stroke balance torsion spring 45 is slidably disposed in the front stroke hanging groove 4121. Similarly, the hook portion of one end of the front stroke balance torsion spring 45 is inserted into the corresponding hook hole 421, and the hook portion of the other end of the front stroke balance torsion spring 45 is inserted into the front stroke hanging groove 4121. That is to say, both the front stroke hanging groove 4121 and the rear stroke hanging groove 4101 are arc-shaped grooves with their centers located on the aforementioned hinge axis.

[0033] The working principle of the fan of this utility model is briefly explained below: Figure 2 As shown, the fan body 3 includes a fan housing 32, inside which is an impeller 33. The impeller 33 is mounted on the output shaft of the impeller motor 36. The fan housing 32 and the rear cover 31 are connected to the impeller motor 36 by corresponding screws. The rear of the impeller motor 36 is located inside the rear cover 31. The impeller motor 36 drives the impeller 33 to rotate and deliver air. When it is necessary for the fan body 3 to swing up and down, the front and rear tilting motor 34 drives the tilting drive gear 35 to rotate. The tilting drive gear 35 drives the horizontal fixed gear 211 to rotate. Since the horizontal fixed gear 211 is mounted on the bracket 2, the fan body 3 swings up and down around the horizontal axis. When the fan body 3 delivers air forward, the corresponding other end of the aforementioned forward stroke balance torsion spring 45 is hooked onto the lower end of the forward stroke mounting slot 4121. The lower end of the forward stroke mounting slot 4121 prevents the forward stroke balance torsion spring 45 from rotating clockwise (in Figure 2 (From the visual direction), at this time, the front stroke balance torsion spring 45 is in a state of large-amplitude elastic torsional deformation. The elastic force of the front stroke balance torsion spring 45 supports the torque of the weight of the fan body 3 around the aforementioned hinge axis. When the front and rear tilting motor 34 drives the fan body 3 to swing upward, as the rotating sleeve 42 drives the front stroke balance torsion spring 45 to rotate counterclockwise, the corresponding other end of the front stroke balance torsion spring 45 gradually relaxes the lower end of the front stroke mounting slot 4121, and the counterclockwise torque of the front stroke balance torsion spring 45 on the fan body 3 gradually decreases. During this process, the corresponding other end of the rear stroke balance torsion spring 44 slides freely in the rear stroke mounting slot 4101. The rear stroke balance torsion spring 44 does not work during the above process. When the fan body 3 swings counterclockwise to the upward air delivery position, the aforementioned rear stroke... The other end of the balance torsion spring 44 reaches the upper end of the rear stroke mounting slot 4101, so the fan body 3 continues to rotate counterclockwise and flips backward. The other end of the rear stroke balance torsion spring 44 hooks onto the upper end of the rear stroke mounting slot 4101. The elastic torsional deformation amplitude of the rear stroke balance torsion spring 44 gradually increases. The rear stroke balance torsion spring 44 applies a clockwise torque to the fan body 3 to balance the torque of the weight of the fan body 3 on the hinge axis. As can be seen from the above, by setting the gravity balancer 4, the fan body 3 achieves gravity balance in both the forward to upward and upward to backward strokes, reducing the load on the front and rear flip motor 34. This allows the front and rear flip motor 34 to be selected with a smaller output power, which helps to reduce the manufacturing cost of the fan and is beneficial for energy saving.

[0034] Furthermore, such as Figure 1 and Figure 2 As shown, the rear of the fan body 3 is provided with a rear cover 31, such as... Figure 4 As shown, a side protrusion 311 is formed on the outer side of the rear cover 31, such as... Figure 9As shown, a flip-limiting groove 2101 is formed on the bracket 2, and a side protrusion 311 is provided in the flip-limiting groove 2101. Specifically, the flip-limiting groove 2101 is arc-shaped, and the center of the flip-limiting groove 2101 is located on the aforementioned hinge axis. As the fan body 3 flips and swings back and forth, for example, when the fan body 3 swings to the forward and downward air supply position, the side protrusion 311 is blocked and limited by the front end of the flip-limiting groove 2101, and when the fan body 3 swings to the backward and downward air supply position, the side protrusion 311 is blocked and limited by the rear end of the flip-limiting groove 2101, thereby avoiding collision and interference between the fan cover 32 and the bracket 2.

[0035] Furthermore, such as Figure 1 and Figure 9 As shown, the upper part of the bracket 2 is provided with a fork arm 21, and the rear cover 31 is hinged to the inner side of the fork arm 21. That is to say, specifically, the rear cover 31 is hinged to the fork arm 21. Figure 5 As shown, the horizontal fixed gear 211 and the fixed block 41 are arranged on opposite sides. A hinge shaft head is formed on the left side of the rear cover 31. The hinge shaft head is inserted into the horizontal fixed gear 211. The right end of the rear cover 31 and the right part of the fork arm 21 are hinged through the hinge shaft 411. In other words, by setting the rear cover 31 to be hinged to the inside of the fork arm 21, the fork arm 21 can protect the rear cover 31. Moreover, the arrangement of the horizontal fixed gear 211 and the fixed block 41 on opposite sides is more reasonable and avoids the structural complexity caused by arranging the horizontal fixed gear 211 and the fixed block 41 on the same side.

[0036] Furthermore, such as Figure 5 and Figure 6 As shown, the rotating sleeve 42 and the front and rear tilting motors 34 are respectively installed on the inner wall of the rear cover 31 by corresponding screws. The horizontal fixed gear 211 is embedded in the interior of the fork arm 21. The tilting drive gear 35 passes through the left side wall of the rear cover 31, so that the tilting drive gear 35 extends into the horizontal fixed gear 211, thus making full use of the internal space of the combination of the fork arm 21 and the rear cover 31.

[0037] Furthermore, such as Figure 1 and Figure 9 As shown, the upper end of the fork arm 21 is disc-shaped, and the rear end of the rear cover 31 is arc-shaped. The rear end of the rear cover 31 is coaxially and flush with the upper end of the fork arm 21, meaning that the arc-shaped part of the rear cover 31 is coaxial with the upper end of the fork arm 21 and has the same radius. Figure 1 As shown, this gives the upper part of the fan a neater and simpler visual feel, and reduces the difference in appearance between the forward airflow state and the backward airflow state of the fan body 3.

[0038] Furthermore, such as Figure 7 and Figure 8 As shown, the fixed block 41 has a hinge shaft portion 411, and the rotating sleeve 42 is adapted to rotatably mounted on the hinge shaft portion 411, as shown. Figure 5 As shown, since the rotating sleeve 42 is connected to the back cover 31 by the corresponding screw, the hinge shaft 411 actually supports the fan body 3. The gravity balancer 4 is used to simultaneously achieve the hinge connection between the fan body 3 and the bracket 2, which helps to simplify the structure of the fan.

[0039] Furthermore, such as Figure 7 and Figure 8 As shown, the fixed block 41 includes an end block 412, which is mounted on the end of the hinge shaft 411 by corresponding screws. The front stroke mounting groove 4121 is formed on the end block 412. The rear stroke balance torsion spring 44 and the front stroke balance torsion spring 45 are located on both sides of the rotating sleeve 42, that is, the rotating sleeve 42 is located between the end block 412 and the fixed block 41 body, so that the gravity balancer 4 can position the fan body 3 along the hinge axis direction.

[0040] Furthermore, such as Figure 1 and Figure 2 As shown, the fan of this utility model also includes a base 1, and the lower end of the bracket 2 is horizontally rotatably connected to the base 1, thus allowing the fan body 3 to rotate horizontally. Figure 3 As shown, a vertical moving gear 15 is installed at the lower end of the bracket 2, meaning that the axis of the vertical moving gear 15 is along the vertical direction, and the axis of the vertical moving gear 15 coincides with the rotation axis of the bracket 2 and the base 1, as shown. Figure 10 As shown, a horizontal rotating motor 18 is mounted on the base 1. A horizontal rotating gear 19 is mounted on the output shaft of the horizontal rotating motor 18. The horizontal rotating gear 19 is externally meshed with a vertical moving gear 15. The horizontal rotating motor 18 can be a stepper motor. The horizontal rotating motor 18 drives the horizontal rotating gear 19 to rotate, and the horizontal rotating gear 19 drives the vertical moving gear 15 to rotate. This allows the bracket 2 and the fan body 3 to rotate horizontally and change the airflow direction. The teeth of the vertical moving gear 15 are arranged in a full circumference, which allows the fan body 3 to deliver air horizontally in a full circumference, achieving an omnidirectional airflow effect. The horizontal rotating motor 18 can drive the fan body 3 to swing horizontally back and forth. The bracket 2 has a columnar structure. The number of teeth on the vertical moving gear 15 is significantly more than the number of teeth on the horizontal rotating gear 19, thus achieving a torque-increasing effect.

[0041] Furthermore, such as Figure 10 and Figure 11 As shown, the base 1 is provided with a horizontal rotation limiting main groove 1301, such as Figure 13 As shown, a horizontal rotation-limiting groove 1501 is formed at the bottom of the vertical moving gear 15, as... Figure 3 As shown, a limiting turntable 14 is provided on the lower side of the vertical moving gear 15, such as... Figure 12 As shown, an upper protrusion 142 is formed on the upper side of the limiting turntable 14, and a lower protrusion 141 is formed on the lower side of the limiting turntable 14, as... Figure 3As shown, the lower protrusion 141 is slidably disposed within the horizontal rotation limiting main groove 1301, and the upper protrusion 142 is slidably disposed within the horizontal rotation limiting secondary groove 1501. That is, both the horizontal rotation limiting main groove 1301 and the horizontal rotation limiting secondary groove 1501 are arc-shaped grooves, and their centers are located on the axis of the vertical moving gear 15. When the bracket 2 rotates horizontally at a certain angle, one end of the horizontal rotation limiting secondary groove 1501 first contacts the upper protrusion 142, enabling the bracket 2 to drive the limiting turntable 14 to rotate. When the bracket 2 rotates more than 360°, the lower protrusion 141 contacts the end of the horizontal rotation limiting main groove 1301, thereby preventing the bracket 2 from rotating unidirectionally and causing the wires from the base 1 to the fan body 3 to break. By setting the horizontal rotation limiting main groove 1301 and the horizontal rotation limiting secondary groove 1501 to complement each other, the bracket 2 can rotate horizontally more than 360°. Specifically, as shown... Figure 11 As shown, in order to limit the rotation of the bracket 2, a protrusion 1302 is formed on the horizontal rotation limiting main groove 1301, and the angle range of the horizontal rotation limiting secondary groove 1501 is greater than the angle range of the protrusion 1302. For example, the total horizontal rotation angle stroke of the bracket 2 can be set to be greater than or equal to 360° to 365°.

[0042] Furthermore, such as Figure 1 , Figure 2 and Figure 10 As shown, the base 1 includes a chassis 11 and a cover 12. The cover 12 covers the chassis 11, and a horizontal rotating support plate 13 is installed on the upper side of the chassis 11. Figure 11 As shown, a horizontal rotation limiting main groove 1301 is formed on a horizontal rotation support disk 13, and the horizontal rotation support disk 13 has a vertical shaft portion 131, as shown. Figure 4 As shown, a flange 201 is formed at the lower end of the bracket 2, as... Figure 3 As shown, the vertical shaft portion 131 is connected to the bracket 2 via a rolling bearing 16, which facilitates the flexible rotation of the bracket 2. An upper end cover 17 is installed on the upper end of the vertical shaft portion 131, with the outer edge of the upper end cover 17 abutting against the upper side of the inner ring of the rolling bearing 16. The flange 201 is connected to the upper side of the vertical moving gear 15 via corresponding screws. A limiting turntable 14 is sleeved on the vertical shaft portion 131. Figure 2 and Figure 3 As shown, flange 201, vertical moving gear 15, and horizontal rotating support plate 13 are located within the cavity formed by chassis 11 and cover 12. Support 2 passes through cover 12, thus cover 12 can prevent dust and debris from easily falling onto vertical moving gear 15. Figure 1 As shown, since the cover 12 is fixed, the control panel can be located on the cover 12.

Claims

1. A fan that supplies air in all directions, characterized in that: The device includes a bracket (2), a fan body (3), and a gravity balancer (4). The rear of the fan body (3) is hinged to the bracket (2). A horizontal fixed gear (211) is provided on the bracket (2). A front-to-back rotating motor (34) is provided at the rear of the fan body (3) to drive the fan body (3) to swing relative to the bracket (2). The front-to-back rotating motor (34) drives the horizontal fixed gear (211). The gravity balancer (4) includes a fixed block (41), a rotating sleeve (42), a rear stroke balance torsion spring (44), and a front stroke balance torsion spring (45). The fixed block (41) is mounted on the bracket (2). The rotating sleeve (42) is installed on the fan body (3). One end of the fixed block (41) is formed with a rear stroke groove (4101), and the other end of the fixed block (41) is formed with a front stroke groove (4121). One end of the rear stroke balance torsion spring (44) is positioned and connected to the rotating sleeve (42), and the other end of the rear stroke balance torsion spring (44) is slidably disposed in the rear stroke groove (4101). One end of the front stroke balance torsion spring (45) is positioned and connected to the rotating sleeve (42), and the other end of the front stroke balance torsion spring (45) is slidably disposed in the front stroke groove (4121).

2. The omnidirectional airflow fan according to claim 1, characterized in that: The rear of the fan body (3) is provided with a rear cover (31), and a side protrusion (311) is formed on the outer side of the rear cover (31). A flip-limiting groove (2101) is formed on the bracket (2), and the side protrusion (311) is located in the flip-limiting groove (2101).

3. The omnidirectional airflow fan according to claim 2, characterized in that: The upper part of the bracket (2) is provided with a fork arm (21), the rear cover (31) is hinged to the inner side of the fork arm (21), and the horizontal fixed gear (211) and the fixed block (41) are arranged on opposite sides.

4. The omnidirectional airflow fan according to claim 3, characterized in that: The rotating sleeve (42) and the front and rear tilting motor (34) are installed on the inner wall of the rear cover (31), and the horizontal fixed gear (211) is embedded in the inside of the fork arm (21).

5. The omnidirectional airflow fan according to claim 4, characterized in that: The upper end of the fork arm (21) is disc-shaped, and the rear end of the rear cover (31) is arc-shaped. The rear end of the rear cover (31) is coaxially and flush with the upper end of the fork arm (21).

6. The omnidirectional airflow fan according to claim 1, characterized in that: The fixed block (41) has a hinge shaft portion (411), and the rotating sleeve (42) is adapted to rotatably mounted on the hinge shaft portion (411).

7. The omnidirectional airflow fan according to claim 6, characterized in that: The fixed block (41) includes an end block (412), which is installed at the end of the hinge shaft (411). The front stroke groove (4121) is formed on the end block (412), and the rear stroke balance torsion spring (44) and the front stroke balance torsion spring (45) are located on both sides of the rotating sleeve (42).

8. The omnidirectional airflow fan according to any one of claims 1 to 7, characterized in that: It also includes a base (1), the lower end of the bracket (2) is horizontally rotatably connected to the base (1), the lower end of the bracket (2) is equipped with a vertical moving gear (15), the base (1) is equipped with a horizontal rotating motor (18), the output shaft of the horizontal rotating motor (18) is equipped with a horizontal rotating gear (19), and the horizontal rotating gear (19) is externally meshed with the vertical moving gear (15).

9. The omnidirectional airflow fan according to claim 8, characterized in that: The base (1) is provided with a horizontal rotation limiting main groove (1301), and a horizontal rotation limiting secondary groove (1501) is formed at the bottom of the vertical moving gear (15). A limiting turntable (14) is provided on the lower side of the vertical moving gear (15). An upper protrusion (142) is formed on the upper side of the limiting turntable (14), and a lower protrusion (141) is formed on the lower side of the limiting turntable (14). The lower protrusion (141) is slidably disposed in the horizontal rotation limiting main groove (1301), and the upper protrusion (142) is slidably disposed in the horizontal rotation limiting secondary groove (1501).

10. The omnidirectional airflow fan according to claim 9, characterized in that: The base (1) includes a chassis (11) and a cover (12). The cover (12) covers the chassis (11). A horizontal rotating support plate (13) is installed on the upper side of the chassis (11). A horizontal rotation limiting main groove (1301) is formed on the horizontal rotating support plate (13). The horizontal rotating support plate (13) has a vertical shaft portion (131). A flange (201) is formed at the lower end of the bracket (2). The vertical shaft portion (131) 31) The bracket (2) is connected by a rolling bearing (16). The flange (201) is installed on the upper side of the vertical moving gear (15). The limiting turntable (14) is sleeved on the vertical shaft part (131). The flange (201), the vertical moving gear (15) and the horizontal rotating support plate (13) are located in the cavity formed by the chassis (11) and the cover (12). The bracket (2) passes through the cover (12).

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