A large angle oscillating fan

Abstract

The utility model discloses a wide-angle oscillating fan, including fan main body and base, and the base includes fixed bottom disc and movable disc subassembly, and movable disc subassembly rotation is connected on fixed bottom disc, and fan main body is located movable disc subassembly, and the base is equipped with left and right swing drive mechanism, and left and right swing drive mechanism is equipped with second motor, second motor gear and second swing gear, and second swing gear is full gear, and second swing gear is opposite positioning setting with fixed bottom disc, and second motor gear is meshed connection second swing gear outward, and second motor is installed on movable disc subassembly, and second motor gear is installed on the output rotating shaft of second motor, and the upper end of second swing gear forms ring recess, and the downside of movable disc subassembly is equipped with lower lug, and lower lug moves and is equipped with in ring recess, and the horizontal swing limiting piece for blocking the whole rotation of lower lug is formed in ring recess. The utility model discloses a fan has left and right and up and down swing air supply angle range's advantage of being bigger.

Description

Technical Field

[0001] This utility model relates to the field of fans, specifically to a large-angle oscillating fan. Background Technology

[0002] Currently, most fans on the market have up-and-down and left-and-right oscillation functions to expand the airflow range. The specific drive structure can be found in the Chinese invention patent application publication number CN120626521A, "A Gear-Driven Oscillating Circulating Fan". This patent has a left-and-right oscillation drive mechanism, and the second oscillation gear of the left-and-right oscillation drive mechanism is a sector gear. "When the sector part of the second oscillation gear contacts the left-and-right oscillation limiting protrusion, the movable disk assembly will be limited." However, the above structure results in a small horizontal (left-and-right) oscillation angle range of the fan body. Specifically, when it is necessary to increase the horizontal oscillation range of the fan body, the central angle of the sector gear needs to be reduced, but at the same time, the angle range of the second oscillation gear (sector gear) that can mesh with the second motor gear is reduced. Therefore, the structure of the above patent is not conducive to large-angle left-and-right oscillation of the fan body and needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a large-angle oscillating fan, which is beneficial to increasing the range of left and right oscillation air delivery angle.

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

[0005] This utility model discloses a large-angle oscillating fan, including a fan body and a base. The base includes a fixed chassis and a movable disc assembly. The movable disc assembly is rotatably connected to the fixed chassis. The fan body is disposed on the movable disc assembly. The base is provided with a left-right oscillation drive mechanism. The left-right oscillation drive mechanism includes a second motor, a second motor gear, and a second oscillation gear. The second oscillation gear is a full gear. The second oscillation gear is positioned relative to the fixed chassis. The second motor gear is externally meshed with the second oscillation gear. The second motor is mounted on the movable disc assembly. The second motor gear is mounted on the output shaft of the second motor. An annular groove is formed at the upper end of the second oscillation gear. A lower protrusion is provided on the lower side of the movable disc assembly. The lower protrusion is movably disposed within the annular groove. A horizontal oscillation limiting piece is formed within the annular groove to prevent the lower protrusion from rotating around its entire circumference.

[0006] Preferably, the fixed chassis has a positioning protrusion, and the lower end of the second oscillating gear has a cover ring portion, which is adapted to be fitted onto the positioning protrusion.

[0007] Preferably, the second oscillating gear is adapted to be disposed between the movable disk assembly and the positioning convex shell in the vertical direction.

[0008] Preferably, a support ring is coaxially formed at the upper end of the second oscillating gear, and the support ring is in contact with the movable disk assembly.

[0009] Preferably, the support rings are arranged concentrically.

[0010] Preferably, the fan body is provided with a motor housing and a vertical swing drive mechanism. The vertical swing drive mechanism is provided with a force transmission arm. The inner end of the force transmission arm is provided with a vertical swing limiting block. The front end of the motor housing is formed with a blocking protrusion for relatively blocking the vertical swing limiting block.

[0011] Preferably, the force transmission arm includes a sheet metal arm body, an inner end connector, and an outer end connector, wherein the inner end connector and the outer end connector are respectively installed and connected to the two ends of the sheet metal arm body.

[0012] Preferably, the large-angle oscillating fan of this utility model further includes a fork arm, the lower end of which is fixedly connected to the movable disc assembly, the upper end of which forms a hinge shaft head, which is connected to the fan body, the motor housing forms a radial groove, one end of which communicates with the interior of the motor housing, and the other end of which is aligned with the corresponding hinge shaft head.

[0013] Preferably, the movable disc assembly includes a movable chassis and a disc cover. The lower end of the fork arm is mounted and connected to the movable chassis. The disc cover is mounted on the upper side of the movable chassis. The fork arm forms a vertical groove. The upper end of the vertical groove is connected to a corresponding hinge shaft head, and the lower end of the vertical groove is connected to the disc cover.

[0014] Preferably, the radial groove is provided with a groove cover, the groove cover is formed with a fastening frame, the groove cover is placed on the radial groove, and the fastening frame fastens to the edge of the radial groove.

[0015] Compared with the prior art, the advantages of this utility model are as follows: By setting the second swing gear to be a full gear, positioning the second swing gear relative to the fixed chassis, externally meshing the second motor gear with the second swing gear, mounting the second motor on the movable disk assembly, mounting the second motor gear on the output shaft of the second motor, forming an annular groove at the upper end of the second swing gear, and providing a lower protrusion on the lower side of the movable disk assembly, the lower protrusion is movably disposed within the annular groove, and a horizontal swing limiting plate is formed within the annular groove to prevent the lower protrusion from rotating around the entire circumference, which helps to increase the left and right swing air delivery angle range of the fan body. Attached Figure Description

[0016] Figure 1This is a three-dimensional cross-sectional view of the back of the large-angle oscillating fan of this utility model.

[0017] Figure 2 for Figure 1 A partial structural diagram at point A.

[0018] Figure 3 This is a three-dimensional structural diagram of the back of the large-angle oscillating fan of this utility model.

[0019] Figure 4 This is an exploded bottom view of the base of this utility model with the disc cover removed.

[0020] Figure 5 This is a top exploded view of the base of this utility model with the disc cover removed.

[0021] Figure 6 This is a top-view perspective sectional view of the base of this utility model with the disc cover removed.

[0022] Figure 7 This is a top-view three-dimensional structural diagram of the second oscillating gear of this utility model.

[0023] Figure 8 This is a top view of the combination of the second swing gear, the lower protrusion, and the second motor gear of this utility model.

[0024] Figure 9 This is a right-side perspective three-dimensional structural diagram of the large-angle oscillating fan of this utility model, with the air inlet cover and front cover removed.

[0025] Figure 10 This is a three-dimensional partial structural diagram of the front of the large-angle oscillating fan of this utility model, with the motor housing, air inlet cover and front shell removed.

[0026] Figure 11 This is a three-dimensional structural diagram of the force transmission arm of this utility model.

[0027] Figure 12 This is a left-side three-dimensional structural diagram of the large-angle oscillating fan of this utility model, with the air inlet cover and front cover removed.

[0028] Figure 13 For the corresponding Figure 12 A schematic diagram of its breakdown.

[0029] Labeling: Fan body 1; Motor housing 11; Restricted protrusion 112; Radial groove 113; Groove cover 114; Buckle frame 1141; Air inlet cover 12; Front cover 13; Fan impeller 14; Up-and-down swing drive mechanism 15; First motor 151; First motor gear 152; First-stage reduction output gear 153; Second-stage reduction input gear 154; First swing gear 155; Force transmission arm 156; Sheet metal arm body 1560; Inner end connector 1561; Outer end connector 1562; Up-and-down swing limit block 1563; Fan blade motor 17; Front cover 170; Base 2; Fixed chassis 21; Positioning protrusion 211; Movable disc assembly 22; movable base 221; rotating connecting shaft 2210; lower protrusion 2211; disc cover 222; clearance opening 2221; left and right swing drive mechanism 23; second motor 231; second motor gear 232; second swing gear 233; ring groove 2331; positioning slot 2332; cover ring 2333; horizontal swing limit piece 2334; support ring 2335; retaining ring 24; fork arm 3; hinge shaft head 31; vertical groove 301; outer cover of fork arm 32. Detailed Implementation

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

[0031] This utility model features a large-angle oscillating fan, such as Figures 1 to 3 As shown, the device includes a fan body 1 and a base 2. The base 2 includes a fixed chassis 21 and a movable disc assembly 22. The movable disc assembly 22 is rotatably connected to the fixed chassis 21. The fan body 1 is mounted on the movable disc assembly 22. Specifically, the movable disc assembly 22 includes a movable chassis 221 and a disc cover 222. The disc cover 222 is mounted on the movable chassis 221, and the disc cover 222 and the movable chassis 221 are fixedly connected by corresponding screws. Figure 4 As shown, a rotating connecting shaft 2210 is formed at the bottom of the movable chassis 221, as... Figure 2 As shown, the lower end of the rotating connecting shaft 2210 passes through the center hole of the fixed base 21, meaning that the fixed base 21 can rotate relative to the movable disk assembly 22 around the rotating connecting shaft 2210. Figures 4 to 6 As shown, the base 2 is equipped with a left-right swing drive mechanism 23. The left-right swing drive mechanism 23 includes a second motor 231, a second motor gear 232, and a second swing gear 233. The second motor 231 is a stepper motor, and the second swing gear 233 is a full gear, meaning the teeth of the second swing gear 233 are evenly distributed around the circumference. The second swing gear 233 is positioned relative to the fixed base 21. Figure 6As shown, the second motor gear 232 is externally meshed with the second swing gear 233. The second motor 231 is mounted on the movable disk assembly 22 by corresponding screws. Specifically, the second motor 231 is mounted on the movable chassis 221, and the second motor 231 is located inside the disk cover 222. The rotation axis of the second swing gear 233 relative to the movable chassis 221 is in the vertical direction. The second motor gear 232 is mounted on the output shaft of the second motor 231, that is, the second motor gear 232 and the output shaft of the second motor 231 are coaxially arranged. Figure 7 As shown, an annular groove 2331 is formed at the upper end of the second oscillating gear 233. The annular groove 2331 is coaxially arranged with the second oscillating gear 233. Figure 4 As shown, the lower side of the movable plate assembly 22 is provided with a lower protrusion 2211, which is specifically integrated with the movable chassis 221. Figure 2 As shown, the lower protrusion 2211 is movably disposed within the annular groove 2331, as... Figure 7 As shown, a horizontal swing limiting piece 2334 is formed in the annular groove 2331 to prevent the lower protrusion 2211 from rotating around the entire circumference (around the rotating connecting shaft 2210). The two ends of the horizontal swing limiting piece 2334 are respectively connected to the side wall of the annular groove 2331. The annular groove 2331 and the rotating connecting shaft 2210 are arranged coaxially.

[0032] like Figure 6 and Figure 8 As shown, the second motor 231 drives the second motor gear 232 to rotate, and the second motor gear 232 drives the second oscillating gear 233 to rotate. Since the second oscillating gear 233 is positioned relative to the fixed base 21, and the second motor 231 is mounted on the movable disk assembly 22, in practical applications, the bottom of the fixed base 21 contacts the table or ground, thus fixing the fixed base 21 and allowing the movable disk assembly 22 to rotate horizontally. Because the fan body 1 is mounted on the movable disk assembly 22, the fan body 1 can oscillate horizontally back and forth (i.e., swing left and right). Since the second motor 231 is a stepper motor, the second oscillating gear 233 can rotate in both directions relative to the movable disk assembly 22 by program control of the second motor 231. The principle of the second motor 231 driving the fan body 1 to oscillate horizontally back and forth can be found in Chinese invention patent application publication number CN120626521A, entitled "A Gear-Driven Oscillating Circulating Fan". Figure 8As shown, during the rotation of the movable disc assembly 22, the lower protrusion 2211 moves along the arc of the annular groove 2331. When the lower protrusion 2211 moves to contact the horizontal swing limiting piece 2334, the movable disc assembly 22 is mechanically limited. This allows for a smaller width (i.e., dimension "W") of the horizontal swing limiting piece 2334, increasing the horizontal rotation angle range (i.e., angle dimension "X") of the movable disc assembly 22. Dimension "W" can be set to 2 mm to 3 mm, and angle dimension "X" is approximately 325°. Compared with existing technologies, this invention uses a combination of the lower protrusion 2211 and the horizontal swing limiting piece 2334 to mechanically limit the movable disc assembly 22, avoiding the need to set the second swing gear 233 as a sector gear. Therefore, the second swing gear 233 can be set as a full gear, allowing the fan body 1 to swing approximately a full circle horizontally (left and right). Thus, the large-angle oscillating fan of this invention is beneficial for increasing the left and right swing air delivery angle range. In practical applications, since the second motor 231 is controlled by a program to achieve forward and reverse rotation, under normal use, the lower protrusion 2211 does not need to contact the horizontal swing limit plate 2334. When the second motor 231 malfunctions, the horizontal swing limit plate 2334 may contact and block the lower protrusion 2211 to prevent the movable disk assembly 22 from rotating continuously in one direction. A circuit board is installed on the upper side of the movable chassis 221. The circuit board is located inside the disk cover 222. The electrical components of the fan body 1 (such as the fan blade motor 17 and the first motor 151) are connected to the circuit board through wires. The circuit board is connected to the power cord of the fan. One end of the power cord is clipped to the bottom of the fixed chassis 21. If the movable disk assembly 22 rotates continuously in one direction, the power cord will be broken.

[0033] Furthermore, such as Figure 5 As shown, the fixed chassis 21 has a positioning protrusion 211, such as Figure 4 and Figure 7 As shown, the lower end of the second oscillating gear 233 has a cover ring portion 2333, as... Figure 2 and Figure 6 As shown, the cover ring 2333 is adapted to be mounted on the positioning protrusion 211, so that the positioning protrusion 211 can effectively radially position the second swing gear 233.

[0034] Furthermore, such as Figure 2 and Figure 6As shown, the second swing gear 233 is adapted to be disposed between the movable disk assembly 22 and the positioning protrusion 211 in the vertical direction. Specifically, the bottom of the movable base 221 abuts against the upper side of the second swing gear 233, and the positioning protrusion 211 abuts against the lower side of the second swing gear 233, thereby axially positioning the second swing gear 233. The rotating connecting shaft 2210 is adapted to coaxially pass through the second swing gear 233. A retaining ring 24 is installed on the lower end face of the rotating connecting shaft 2210. The edge of the center hole of the second swing gear 233 and the fixed base 21 is located between the bottom of the movable base 221 and the retaining ring 24 to prevent the movable base 221 from shifting upward relative to the fixed base 21. Figure 4 and Figure 5 As shown, the cover ring 2333 has a positioning slot 2332, and the upper side of the fixed chassis 21 has a ridge structure. The ridge structure is adapted to connect with the positioning slot 2332, thereby preventing the second swing gear 233 from rotating and shifting horizontally relative to the fixed chassis 21.

[0035] Furthermore, such as Figure 7 As shown, a support ring 2335 is coaxially formed at the upper end of the second oscillating gear 233. That is, the support ring 2335 is coaxially arranged with the rotating connecting shaft 2210, and the support ring 2335 contacts and connects to the movable disk assembly 22. Figure 2 Specifically, the support ring 2335 contacts the bottom of the support movable chassis 221, that is, the support ring 2335 supports the weight of the movable chassis assembly 22 and the fan body 1, which can greatly reduce the contact area between the movable chassis 221 and the fixed chassis 21 and the second swing gear 233, thereby reducing the frictional resistance encountered by the movable chassis 221 when it rotates, which is conducive to the flexible left and right oscillation of the fan body 1. When the movable chassis 221 rotates, it can be understood that the movable chassis 221 slides along the support ring 2335.

[0036] Furthermore, such as Figure 7 As shown, the support rings 2335 are concentrically distributed. Specifically, there are three support rings 2335. The inner and outer sides of the ring groove 2331 are respectively provided with support rings 2335. A support ring 2335 is provided at the edge of the center hole of the second swing gear 233. Through the above arrangement, although the contact area between the second swing gear 233 and the movable chassis 221 is slightly increased, rapid wear caused by the single support ring 2335 is avoided. Lubricating grease can be provided between the support ring 2335 at the edge of the center hole of the second swing gear 233 and the adjacent support ring 2335.

[0037] Furthermore, such as Figure 10As shown, the fan body 1 is provided with a motor housing 11 and a vertical oscillation drive mechanism 15. The vertical oscillation drive mechanism 15 is prior art and can be found in the Chinese utility model patent application publication number CN120626521A entitled "A Gear-Driven Oscillating Circulating Fan". Figure 9 and Figure 10 As shown, the up-and-down swing drive mechanism 15 includes a first motor 151, a first motor gear 152, a first-stage reduction output gear 153, a second-stage reduction input gear 154, and a first swing gear 155. The first motor 151 is a stepper motor. The first motor 151 and the fan motor 17 are installed inside the motor housing 11. A front cover 170 is installed at the front end of the motor housing 11. The output shaft of the fan motor 17 extends outside the motor housing 11, that is, the output shaft of the fan motor 17 passes through the front cover 170. The fan impeller 14 is coaxially mounted on the output shaft of the fan motor 17. The first motor gear 152 is mounted on the output shaft of the first motor 151. The first-stage reduction output gear 153 and the second-stage reduction input gear 154 are rotatably connected. The motor housing 11, the first-stage reduction output gear 153 and the second-stage reduction input gear 154 are integrated. One end (inner end) of the force transmission arm 156 is positioned and connected to the first swing gear 155, and the corresponding other end (outer end) of the force transmission arm 156 is positioned and connected to the fork arm 3. Thus, the first motor 151 drives the first motor gear 152 to rotate, the first motor gear 152 drives the first-stage reduction output gear 153 and the second-stage reduction input gear 154 to rotate, and the second-stage reduction input gear 154 drives the first swing gear 155 to rotate. Since the corresponding other end of the force transmission arm 156 is positioned and connected to the fork arm 3, it actually causes the fan body 1 to rotate around the hinge shaft 31. As mentioned above, the up-and-down swing drive mechanism 15 is provided with a force transmission arm 156. Figure 11 As shown, the inner end of the force transmission arm 156 is provided with a vertical swing limiting block 1563 (the "inner end" here refers to the end of the force transmission arm 156 that is relatively close to the rotation axis of the fan impeller 14), as... Figure 9As shown, the front end of the motor housing 11 has a blocking protrusion 112 for blocking the vertical swing limiting block 1563. That is, the blocking protrusion 112 is integrally formed with the motor housing 11. The blocking protrusion 112 protrudes radially (about the rotation axis of the fan impeller 14). When the output shaft of the fan motor 17 is in a forward and downward protruding position from the motor housing 11, the blocking protrusion 112 contacts the front side of the vertical swing limiting block 1563. At this time, the fan impeller 14 blows air forward and downward, and the air delivery direction of the fan body 1 is in the direction of... At the front limit position, when the first motor 151 drives the fan body 1 to swing upward, the fan body 1 then turns to blow air upward, and then the fan body 1 flips to blow air backward. When the blocking protrusion 112 contacts the rear side of the vertical swing limit block 1563, the fan body 1 reaches the rear air blowing limit position. At this time, the output shaft of the fan blade motor 17 is in the form of protruding downward and backward from the motor housing 11. By setting the combination structure of the blocking protrusion 112 and the vertical swing limit block 1563, the fan body 1 is prevented from rotating continuously in one direction, which would cause the above-mentioned wires to break. By setting the blocking protrusion 112 on the motor housing 11, and the first motor 151 being installed inside the motor housing 11, the motor housing 11 is essentially an active swinging part. Using the up-and-down swing limiting block 1563 to block and limit the motor housing 11 is more direct and effective. Compared with the prior art, this utility model avoids forming the up-and-down swing limiting structure on the first swing gear 155, which is conducive to the formation of a larger circumferential range of the teeth of the first swing gear 155 (about the axis of the first swing gear 155), and is conducive to increasing the up-and-down (can be understood as "back-and-forth") swing angle range of the fan body 1.

[0038] Furthermore, such as Figure 11As shown, the force transmission arm 156 includes a sheet metal arm body 1560, an inner end connector 1561, and an outer end connector 1562. The inner end connector 1561 and the outer end connector 1562 are respectively installed and connected to the two ends of the sheet metal arm body 1560. The inner end connector 1561 and the outer end connector 1562 are injection molded parts. Specifically, the inner end connector 1561 is installed and connected to the end of the sheet metal arm body 1560 that is relatively close to the output shaft of the fan blade motor 17 by corresponding screws. The outer end connector 1562 is installed and connected to the sheet metal arm body 1560 by corresponding screws. At the end of the arm body 1560 that is relatively far from the output shaft of the fan motor 17, the first swing gear 155 is adapted to be fitted on the inner end connector 1561, and the inner end connector 1561 engages with the first swing gear 155, thereby preventing the first swing gear 155 from rotating relative to the inner end connector 1561. The outer end connector 1562 is fixedly connected to the corresponding hinge shaft head 31 (specifically the hinge shaft head 31 located on the right side) by screws. The first swing gear 155 and the hinge shaft head 31 are arranged on the same axis. The assembly structure of the aforementioned force transmission arm 156 allows it to be manufactured in three separate parts, making it relatively easy to produce. This avoids the overly complex injection molds that would result from a one-piece structure. Furthermore, when the length of the force transmission arm 156 needs to be changed, only the length of the sheet metal arm body 1560 needs to be altered. Since the sheet metal arm body 1560 is manufactured using sheet metal processing, changing its length is relatively easy and cost-effective.

[0039] Furthermore, such as Figure 1 , Figure 3 and Figure 9 As shown, the fan of this utility model also includes a fork arm 3, the lower end of which is fixedly connected to the movable disk assembly 22. Specifically, as shown... Figure 12 and Figure 13 As shown, the lower end of the fork arm 3 passes through the clearance opening 2221 of the disc cover 222 and extends into the disc cover 222. The lower end of the fork arm 3 is connected to the movable chassis 221 by corresponding screws. Figure 9 and Figure 13 As shown, a hinge head 31 is formed at the upper end of the fork arm 3. The hinge head 31 is connected to the fan body 1. Specifically, the fan body 1 includes a front shell 13 and an air inlet cover 12. The front end of the air inlet cover 12 is connected to the rear end of the front shell 13. The fan impeller 14 and the motor housing 11 are located in the space enclosed by the air inlet cover 12 and the front shell 13. The motor housing 11 is connected to the front shell 13. The fork arm 3 is hinged to the front shell 13 through the hinge head 31. The front shell 13 is located on the upper inner side of the fork arm 3. Figure 12 and Figure 13As shown, the motor housing 11 has a radial groove 113, meaning that the extension direction of the radial groove 113 is approximately parallel to the radial direction of the fan impeller 14. One end of the radial groove 113 is connected to the interior of the motor housing 11, and the other end of the radial groove 113 is aligned with the corresponding hinge shaft head 31 (specifically, the hinge shaft head 31 located on the left). Thus, the wires of the first motor 151 and the fan blade motor 17 inside the motor housing 11 can reach the fork arm 3 through the radial groove 113. After that, the wires can be led down along the fork arm 3 to the circuit board inside the disc cover 222. That is to say, the above-mentioned wires are hidden in the radial groove 113, which helps to protect the above-mentioned wires.

[0040] Furthermore, such as Figure 1 As shown, the movable tray assembly 22 includes a movable base 221 and a tray cover 222, as... Figure 12 and Figure 13 As shown, the lower end of the fork arm 3 is connected to the movable chassis 221 by corresponding screws. The cover 222 is installed on the upper side of the movable chassis 221. The fork arm 3 forms a vertical groove 301, and the upper end of the vertical groove 301 is connected to the corresponding hinge shaft head 31. That is to say, the fork arm located on the left side (in...) Figure 12 (From the visual direction) The hinge head 31 is a hollow shaft structure. The lower end of the vertical wire groove 301 is connected to the disc cover 222. That is to say, the fork arm 3 is a hollow structure. Therefore, the above-mentioned wire can pass through the hinge head 31 located on the left side. Then the wire is introduced into the disc cover 222 along the vertical wire groove 301. The fork arm 3 includes an outer cover 32, which is placed on the vertical wire groove 301. The outer cover 32 and the body of the fork arm 3 can be connected by a snap-fit ​​structure. The above-mentioned arrangement facilitates the arrangement of the above-mentioned wire.

[0041] Furthermore, such as Figure 12 and Figure 13 As shown, the radial wire groove 113 is provided with a wire groove cover 114, and the wire groove cover 114 forms a fastening frame 1141. The wire groove cover 114 is placed on the radial wire groove 113, and the fastening frame 1141 fastens to the edge of the radial wire groove 113. A protruding fastening block is formed on the outer side of the groove opening of the radial wire groove 113, and the fastening frame 1141 fastens to the corresponding protruding fastening block, making the wire groove cover 114 easy to install and remove. By setting the wire groove cover 114, the above-mentioned wires can be further protected, and the wires are better hidden, preventing the wires from being easily seen by the user and affecting the visual effect of the fan.

[0042] In summary, the fan of this invention has the advantage of a large range of left-right and up-down oscillation angles for air delivery.

Claims

1. A large-angle oscillating fan, comprising a fan body (1) and a base (2), wherein the base (2) comprises a fixed base (21) and a movable disc assembly (22), the movable disc assembly (22) being rotatably connected to the fixed base (21), and the fan body (1) being disposed on the movable disc assembly (22), characterized in that: The base (2) is provided with a left and right swing drive mechanism (23). The left and right swing drive mechanism (23) is provided with a second motor (231), a second motor gear (232) and a second swing gear (233). The second swing gear (233) is a full gear. The second swing gear (233) is positioned relative to the fixed chassis (21). The second motor gear (232) is externally meshed with the second swing gear (233). The second motor (231) is mounted on the movable disk assembly (22). The second motor gear (232) is mounted on the output shaft of the second motor (231). The upper end of the second swing gear (233) has an annular groove (2331). The lower side of the movable disk assembly (22) is provided with a lower protrusion (2211). The lower protrusion (2211) is movably disposed in the annular groove (2331). A horizontal swing limiting piece (2334) is formed in the annular groove (2331) to prevent the lower protrusion (2211) from rotating around the entire circle.

2. The large-angle oscillating fan according to claim 1, characterized in that: The fixed chassis (21) has a positioning protrusion (211), and the lower end of the second swing gear (233) has a cover ring (2333), which is adapted to be fitted on the positioning protrusion (211).

3. The large-angle oscillating fan according to claim 2, characterized in that: The second oscillating gear (233) is adapted to be disposed between the movable disk assembly (22) and the positioning convex shell (211) in the vertical direction.

4. The large-angle oscillating fan according to claim 3, characterized in that: The upper end of the second oscillating gear (233) is coaxially formed with a support ring (2335), which is in contact with the movable disk assembly (22).

5. The large-angle oscillating fan according to claim 4, characterized in that: The support rings (2335) are arranged concentrically.

6. The large-angle oscillating fan according to any one of claims 1 to 5, characterized in that: The fan body (1) is provided with a motor housing (11) and an up-and-down swing drive mechanism (15). The up-and-down swing drive mechanism (15) is provided with a force transmission arm (156). The inner end of the force transmission arm (156) is provided with an up-and-down swing limiting block (1563). The front end of the motor housing (11) is formed with a blocking protrusion (112) for relatively blocking the up-and-down swing limiting block (1563).

7. The large-angle oscillating fan according to claim 6, characterized in that: The force transmission arm (156) includes a sheet metal arm body (1560), an inner end connector (1561) and an outer end connector (1562), wherein the inner end connector (1561) and the outer end connector (1562) are respectively installed and connected to the two ends of the sheet metal arm body (1560).

8. The large-angle oscillating fan according to claim 6, characterized in that: It also includes a fork arm (3), the lower end of which is fixedly connected to the movable disk assembly (22), the upper end of which is formed with a hinge shaft head (31), the hinge shaft head (31) is connected to the fan body (1), the motor housing (11) is formed with a radial groove (113), one end of which is connected to the interior of the motor housing (11), and the other end of which is aligned with the corresponding hinge shaft head (31).

9. The large-angle oscillating fan according to claim 8, characterized in that: The movable disc assembly (22) includes a movable chassis (221) and a disc cover (222). The lower end of the fork arm (3) is connected to the movable chassis (221). The disc cover (222) is installed on the upper side of the movable chassis (221). The fork arm (3) forms a vertical groove (301). The upper end of the vertical groove (301) is connected to the corresponding hinge shaft head (31). The lower end of the vertical groove (301) is connected to the disc cover (222).

10. The large-angle oscillating fan according to claim 9, characterized in that: The radial groove (113) is provided with a groove cover (114), the groove cover (114) is formed with a buckle frame (1141), the groove cover (114) is placed on the radial groove (113), and the buckle frame (1141) is fastened to the edge of the radial groove (113).

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