Circulating fan with fork arm supporting structure

Abstract

The utility model discloses a circulation fan with a fork arm supporting structure, which comprises a fan main body and a base, the fan main body is arranged in a fork arm, the fan main body is provided with a motor shell and a fan blade motor, the fan main body is provided with an up-and-down swing driving mechanism, and the up-and-down swing driving mechanism comprises a first motor, a first crank, a first connecting rod, a swing arm and a force transmission arm. One end of the first crank is installed on an output rotating shaft of the first motor, the other corresponding end of the first crank is hinged to one end of the first connecting rod, the other corresponding end of the first connecting rod is hinged to one end of the swing arm, the other corresponding end of the swing arm is in positioning connection with one end of the force transmission arm, and the other corresponding end of the force transmission arm is in positioning connection with the fork arm. The first motor is installed in the rear portion of the motor shell, and the first crank, the first connecting rod and the swing arm are arranged in the motor shell. According to the circulating fan, the reliability of the up-down swing driving mechanism is better, and the visual effect of the circulating fan is improved.

Description

Technical Field

[0001] This utility model relates to the field of circulation fans, specifically to a circulation fan with a fork arm support structure. Background Technology

[0002] Currently, circulating fans are equipped with turbine blades. When the turbine blades rotate, they can output a relatively concentrated airflow with a long range. Chinese utility model patent with publication number CN219045469U discloses "a circulating fan": a second eccentric shaft motor drives a second drive gear to rotate, the second drive gear drives a second driven gear to rotate, and the second driven block rotates accordingly, driving the fan cover to rotate, thereby realizing the up-and-down swing of the circulating fan. Since the second eccentric shaft motor, the second drive gear, and the second driven gear are all located inside the upper end of the supporting arc plate, although the up-and-down swing drive component is hidden, which is good for aesthetics, on the one hand, the size of the above-mentioned parts can only be barely reduced, resulting in insufficient driving force and easy damage to the parts. On the other hand, during daily use, the upper part of the supporting arc plate is easily impacted, so the up-and-down swing drive component is easily displaced or damaged due to impact, that is, the reliability is poor. Therefore, the above-mentioned circulating fan needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a circulating fan with a fork arm support structure. Its up-and-down swing drive mechanism has better reliability and also helps to improve the visual effect of the circulating fan.

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

[0005] The circulating fan disclosed in this utility model includes a fan body and a base. The base is provided with a fork arm, and the fan body is hinged to the fork arm. The fan body is disposed inside the fork arm. The fan body is provided with a motor housing and a fan blade motor. The fan blade motor is disposed in the front part of the motor housing. The fan body is provided with a vertical swing drive mechanism. The vertical swing drive mechanism includes a first motor, a first crank, a first connecting rod, a swing arm, and a force transmission arm. One end of the first crank is mounted on the output shaft of the first motor. The corresponding other end of the first crank is hinged to one end of the first connecting rod. The corresponding other end of the first connecting rod is hinged to one end of the swing arm. The corresponding other end of the swing arm is positioned and connected to one end of the force transmission arm. The corresponding other end of the force transmission arm is positioned and connected to the fork arm. The swing arm can swing relative to the first connecting rod around the hinge axis between the fan body and the fork arm. The first motor is installed in the rear part of the motor housing. The first crank, the first connecting rod, and the swing arm are disposed inside the motor housing.

[0006] Preferably, the fan body includes an air inlet housing and a front housing. The front end of the air inlet housing is installed and connected to the rear end of the front housing. The motor housing is provided with spokes and a support ring on the outside. One end of the spokes is integrally connected to the support ring, and the corresponding other end of the spokes is integrally connected to the outer wall of the motor housing. The support ring is adapted to be disposed inside the rear end of the front housing. The spokes are circumferentially distributed around the axis of the front housing, and the force transmission arm is disposed between two corresponding spokes.

[0007] Preferably, the base includes a fixed chassis and a movable disc assembly. A protruding tube is formed on the fixed chassis. The movable disc assembly includes a movable chassis, a disc cover, and a decorative cover plate. The disc cover is fitted inside the upper end of the movable chassis and is installed and connected to the movable chassis by screws. The decorative cover plate is abutted and covered on the disc cover. The movable chassis is located on the upper side of the fixed chassis. The fan body is located directly above the decorative cover plate. The fork arm is installed and connected to the movable chassis. A rotating connection hole is formed in the middle of the movable chassis. The protruding tube passes through the rotating connection hole. A cover is installed on the upper end of the protruding tube. The cover abuts against the upper side of the edge of the rotating connection hole. The disc cover is located above the cover.

[0008] Preferably, the base is provided with a left-right swing drive mechanism, which includes a second motor, a second crank, a second connecting rod, and a swing plate. The second motor drives the second crank to rotate, and the second crank is connected to the swing plate through the second connecting rod. The swing plate is mounted on the fixed base, and the upper part of the swing plate is adapted to be located between the outer wall of the convex tube and the inner wall of the rotating connection hole. The second motor is mounted on the upper side of the movable base, and the second crank and the second connecting rod are located in the cavity formed by the fixed base and the movable base.

[0009] Preferably, the decorative cover is disposed inside the fork arm.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting up an up-and-down swing drive mechanism including a first motor, a first crank, a first connecting rod, a swing arm, and a force transmission arm, one end of the first crank is mounted on the output shaft of the first motor, the other end of the first crank is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged to one end of the swing arm, the other end of the swing arm is positioned and connected to one end of the force transmission arm, and the other end of the force transmission arm is positioned and connected to the fork arm. The swing arm can swing relative to the first connecting rod around the hinge axis of the fan body and the fork arm. The first motor is installed in the rear part of the motor housing, and the first crank, the first connecting rod, and the swing arm are located in the motor housing. This is beneficial to improve the reliability of the up-and-down swing drive mechanism and also to improve the visual effect of the circulating fan. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the back of the circulating fan of this utility model.

[0012] Figure 2 This is a three-dimensional structural diagram of the back of the circulating fan of this utility model with the air inlet cover removed.

[0013] Figure 3 This is a three-dimensional structural diagram of the back of the circulating fan of this utility model, with the air inlet cover and motor housing removed.

[0014] Figure 4 This is a cross-sectional view of the circulating fan of this utility model.

[0015] Figure 5 This is a three-dimensional structural diagram of the combination of the fork arm, base and up-and-down swing drive mechanism of this utility model.

[0016] Figure 6 This is a top-view perspective three-dimensional structural diagram of the combination of the fork arm and the base (with the decorative cover plate removed) of this utility model.

[0017] Figure 7 This is a top-view perspective three-dimensional structural diagram of the combination of the fork arm and base (with the decorative cover plate and disc cover removed) of this utility model.

[0018] Figure 8 This is a three-dimensional structural diagram of the combination of the fixed chassis and the left-right swing drive mechanism of this utility model.

[0019] Figure 9 This is a three-dimensional structural diagram of the movable chassis of this utility model.

[0020] Labeling: Fan body 1; Motor housing 11; Spokes 111; Support ring 112; Air inlet cover 12; Front cover 13; Turbine fan blades 14; Up-down swing drive mechanism 15; First motor 151; First crank 152; First connecting rod 153; Swing arm 154; Connecting seat 155; Force transmission arm 156; Connector 157; Positioning protrusion 1571; Fan blade motor 17; Base 2; Fixed chassis 21; Protruding tube 211; Movable disc assembly 22; Movable chassis 221; Rotating connecting hole 2211; Disc cover 222; Countersunk hole 2221; Decorative cover plate 223; Left-right swing drive mechanism 23; Second motor 231; Second crank 232; Second connecting rod 233; Swing disc 234; Baffle 24; Fork arm 3. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] The circulating fan of this utility model has a fork-arm support structure, such as Figures 1 to 3As shown, the device includes a fan body 1 and a base 2. A fork arm 3 is mounted on the base 2. The fan body 1 is hinged to the fork arm 3. The hinge axis between the fan body 1 and the fork arm 3 is located in a horizontal plane, allowing the fan body 1 to swing up and down. The fan body 1 is housed within the fork arm 3. Figure 1 As shown, the fork arm 3 includes two upright plates, and the fan body 1 is located between the two upright plates. Figures 2 to 4 As shown, the fan body 1 includes a motor housing 11 and a fan blade motor 17. The fan blade motor 17 is located inside the front part of the motor housing 11, and the output shaft of the fan blade motor 17 extends forward out of the motor housing 11. The turbine fan blades 14 are mounted on the output shaft of the fan blade motor 17. The fan body 1 is equipped with a vertical oscillation drive mechanism 15, such as... Figure 3 and Figure 5 As shown, the up-and-down swing drive mechanism 15 includes a first motor 151, a first crank 152, a first connecting rod 153, a swing arm 154, and a force transmission arm 156. One end of the first crank 152 is mounted on the output shaft of the first motor 151, and the first crank 152 and the output shaft of the first motor 151 can be fixed relative to each other by a set screw. The corresponding other end of the first crank 152 is hinged to one end of the first connecting rod 153, and the corresponding other end of the first connecting rod 153 is hinged to one end of the swing arm 154. The corresponding swing arm 154... The other end is positioned and connected to one end of the force transmission arm 156. Specifically, the up-and-down swing drive mechanism 15 also includes a connecting seat 155. The connecting seat 155 is connected to the swing arm 154 via a key structure, which makes the connecting seat 155 and the swing arm 154 circumferentially (about the swing axis of the swing arm 154) relatively positioned, that is, the swing arm 154 cannot swing relative to the connecting seat 155. One end of the aforementioned force transmission arm 156 is mounted on the connecting seat 155 by a corresponding screw, and the corresponding other end of the force transmission arm 156 is positioned and connected to the fork arm 3. Specifically, as shown in the figure... Figure 5 As shown, the up-and-down swing drive mechanism 15 also includes a connector 157. A positioning protrusion 1571 is formed on one side of the connector 157. An inner protruding shaft head is integrally formed on the inner side of the fork arm 3. The aforementioned inner protruding shaft head is adapted to be fitted through the connector 157 and the force transmission arm 156. The positioning protrusion 1571 is adapted to be inserted into the square through hole of the force transmission arm 156. A hinge hole is formed at the rear end of the front shell 13. The aforementioned hinge hole is adapted to be fitted outside the connector 157. In other words, the fan body 1 and the fork arm 3 are hinged to the aforementioned... The inner convex shaft head has a locking block on the opposite side of the connecting member 157. This locking block engages with the corresponding upright plate portion. Both the locking block and the positioning protrusion 1571 are located radially outside the inner convex shaft head, preventing the connecting member 157 from rotating around the inner convex shaft head and preventing the force transmission arm 156 from rotating around the inner convex shaft head. Through this arrangement, the fork arm 3, force transmission arm 156, connecting member 157, connecting seat 155, and swing arm 154 cannot rotate relative to each other. Figure 5As shown, the swing arm 154 can swing relative to the first connecting rod 153 about the hinge axis between the fan body 1 and the fork arm 3. That is to say, the swing arm 154 can swing relative to the first connecting rod 153 about the aforementioned inner convex shaft head. In other words, the hinge axis between the swing arm 154 and the first connecting rod 153 coincides with the axis of the aforementioned inner convex shaft head. Figures 1 to 3 As shown, the first motor 151 is installed inside the rear of the motor housing 11. Specifically, the outer casing of the first motor 151 is installed on the inner rear wall of the motor housing 11 by corresponding screws. The first crank 152, the first connecting rod 153, and the swing arm 154 are located inside the motor housing 11. The protruding sleeve structure at one end of the connecting seat 155 extends into the motor housing 11 and connects to the swing arm 154. (In the axial direction of the aforementioned inner protruding shaft head) the force transmission arm 156 is located between the corresponding upright plate and the motor housing 11. In other words, the fork arm 3 transmits the supporting force to the swing arm 154 through the force transmission arm 156.

[0023] By setting the structure above, such as Figure 1 and Figure 2 As shown, the first crank 152, the first connecting rod 153, and the swing arm 154 are hidden inside the motor housing 11. The user can only easily see the transmission arm 156 through the air inlet cover 12, avoiding the user from seeing the messy transmission structure inside the fan body 1. It also prevents the first crank 152, the first connecting rod 153, and the swing arm 154 from being outside the motor housing 11, which would easily lead to the accumulation of dust or small debris, thus improving the visual effect of the circulating fan. It also prevents the lubricating grease of the up-and-down swing drive mechanism 15 from being exposed, thus preventing the up-and-down swing drive mechanism 15 from being easily contaminated with dust and debris, which would affect its operation. Furthermore, when the user removes the air inlet cover 12 to clean the inside of the fan body 1, the aforementioned lubricating grease cannot be accidentally removed, thus avoiding malfunction of the up-and-down swing drive mechanism 15.

[0024] like Figure 2 As shown, since the first motor 151, the first crank 152, the first connecting rod 153, and the swing arm 154 are built into the motor housing 11, the above-mentioned parts are not easily subjected to impact. Moreover, the internal space of the motor housing 11 can be set relatively large (relative to the upright plate of the fork arm 3). Therefore, it is not necessary to force the size of the parts of the up-and-down swing drive mechanism 15 to be reduced. This is beneficial to make the parts of the up-and-down swing drive mechanism 15 have better strength, and also allows the first motor 151 to be a model with higher power. Thus, the up-and-down swing drive mechanism of this utility model has better reliability.

[0025] like Figure 3As shown, the first motor 151 drives the first crank 152 to rotate, the first crank 152 drives the first connecting rod 153 to swing back and forth, and the first connecting rod 153 drives the swing arm 154 to swing back and forth. Thus, the swing arm 154 and the fork arm 3 swing back and forth synchronously. However, in actual application, the base 2 is placed on the table, and the up and down swing of the fork arm 3 is hindered by the table. In fact, the swing of the fan body 1 is set on the fork arm 3, so it is actually the first motor 151 that drives the fan body 1 to swing up and down, thereby realizing the up and down swing air delivery.

[0026] Furthermore, such as Figure 1 As shown, the fan body 1 includes an air inlet housing 12 and a front housing 13. The front housing 13 is roughly cylindrical in shape. The front end of the air inlet housing 12 is connected to the rear end of the front housing 13, specifically, the front end of the air inlet housing 12 and the rear end of the front housing 13 are connected by a rotating fastening structure. Figure 2 As shown, the motor housing 11 has spokes 111 and a support ring 112 on its exterior. One end of the spokes 111 is integrated with the support ring 112, and the other end of the spokes 111 is integrated with the outer wall of the motor housing 11. The support ring 112 is adapted to be located in the rear end of the front housing 13, and the rear end of the front housing 13 has an inner protruding mounting block. The support ring 112 is connected to the inner protruding mounting block by corresponding screws. In other words, the motor housing 11 and the turbine fan blade 14 are located in the space enclosed by the front housing 13 and the air inlet housing 12. The spokes 111 are circumferentially distributed around the axis of the front housing 13. It can also be said that the spokes 111 are distributed around the motor housing 11. The number of spokes 111 can be set to six, thereby connecting the motor housing 11 and the front housing 13 firmly. (In the circumferential direction of the front housing 13) the force transmission arm 156 is located between the two corresponding spokes 111.

[0027] Furthermore, such as Figures 4 to 9 As shown, the base 2 includes a fixed base 21 and a movable plate assembly 22. A protruding tube 211 is formed on the fixed base 21. The movable plate assembly 22 includes a movable base 221, a plate cover 222, and a decorative cover plate 223. The plate cover 222 is fitted into the upper end of the movable base 221 and is connected to the movable base 221 by screws. Specifically, as shown... Figure 6 As shown, the cover 222 has countersunk holes 2221, and screws are used to install it into the corresponding countersunk holes 2221 and screw it into the movable base 221, as shown. Figure 5 and Figure 6 As shown, the decorative cover 223 is abutted and mounted on the disc cover 222. The decorative cover 223 can be glued to the disc cover 222, such as... Figure 4 As shown, the movable chassis 221 is located on the upper side of the fixed chassis 21, as... Figure 1As shown, the fan body 1 is positioned directly above the decorative cover 223, meaning the fan body 1 is suspended. Therefore, when the fan body 1 blows air upwards at an angle, the movable disc assembly 22 will not significantly affect the air intake effect of the air intake cover 12. Figure 7 As shown, the fork arm 3 is installed and connected to the movable chassis 221, as follows. Figure 9 As shown, a rotating connection hole 2211 is formed in the middle of the movable chassis 221, such as... Figure 4 and Figure 7 As shown, the convex tube 211 passes through the rotating connection hole 2211, allowing the movable base 221 to rotate horizontally relative to the fixed base 21. A cover 24 is mounted on the upper end of the convex tube 211 via corresponding screws. The cover 24 rests against the upper side of the edge of the rotating connection hole 2211. A disc cover 222 is positioned above the cover 24. A wire hole is formed in the center of the cover 24, allowing the power cord to pass through the wire hole and the convex tube 211 to reach the bottom of the fixed base 21. With the above configuration, when the fixed base... When the fixed base 21 moves downward relative to the movable base 221, the cover 24 will be blocked by the edge of the rotating connection hole 2211, preventing the fixed base 21 from separating from the movable base 221. By hiding the cover 24 between the cover 222 and the movable base 221, it prevents users from easily disassembling the cover 24 to separate the fixed base 21 from the movable base 221. Since users generally do not have professional repair skills, this also prevents users from disassembling the base 2 themselves, which could lead to malfunction of the circulation fan or even safety accidents. Figure 4 As shown, when a professional repairman needs to disassemble base 2, such as Figure 6 As shown, the decorative cover 223 can be removed first to expose the countersunk hole 2221, allowing the screws installed in the countersunk hole 2221 to be removed. Then, the disc cover 222 can be removed, as shown. Figure 7 As shown, you can then continue to remove the screws used to install the cover 24.

[0028] Furthermore, such as Figure 2 , Figure 7 and Figure 8 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 crank 232, a second connecting rod 233, and a swing plate 234. The second motor 231 drives the second crank 232 to rotate. The second crank 232 is connected to the swing plate 234 through the second connecting rod 233. The swing plate 234 is mounted on the fixed base 21. The upper part of the swing plate 234 is adapted to be located between the outer wall of the convex tube 211 and the inner wall of the rotating connection hole 2211. In other words, the upper part of the swing plate 234 is a tubular structure, such as... Figure 7 As shown, the second motor 231 is mounted on the upper side of the movable chassis 221, as... Figure 8 Combination Figure 7As shown, the second crank 232 and the second connecting rod 233 are located in the cavity formed by the fixed chassis 21 and the movable chassis 221. The hinge point between the second connecting rod 233 and the swing plate 234 is located outside the rotation axis of the movable chassis 221 and the fixed chassis 21 (that is, the axis of the convex tube 211). Since the working principle of the left and right swing drive mechanism 23 is roughly the same as that of the up and down swing drive mechanism 15, and the left and right reciprocating swing air supply function of the circulating fan is existing technology, the working principle of the left and right swing drive mechanism 23 will not be described in detail. This invention places the second motor 231 on the upper side of the movable base 221, and the second crank 232 and the second connecting rod 233 on the lower side of the movable base 221. The output shaft of the second motor 231 passes through the movable base 221, which raises the position of the second motor 231 and prevents it from getting wet if the user accidentally knocks over a cup on the table. The power cord, which passes downward through the protruding tube 211 and extends outward from the fixed base 21, has a relatively good waterproof effect because it is wrapped with an insulating outer sheath. A circuit board is installed on the upper side of the movable base 221.

[0029] Furthermore, such as Figure 3 As shown, the decorative cover plate 223 is located inside the fork arm 3, that is, the decorative cover plate 223 is located between the two upright plates of the fork arm 3. Specifically, as shown... Figure 7 As shown, the movable plate assembly 22 is circular, and a curved plate is formed at the lower end of the aforementioned upright plate portion. This curved plate is bent towards the center of the movable base 221. Specifically, the curved plate is installed and connected to the movable base 221, allowing the main body of the aforementioned upright plate portion to be positioned outside the movable base 221. Thus, as... Figure 1 , Figure 5 and Figure 6 As shown, this avoids interference between the upright plate and the disc cover 222 and the decorative cover 223, and also prevents the fork arm 3 from hindering the cleaning of the decorative cover 223.

Claims

1. A circulating fan with a fork arm support structure, comprising a fan body (1) and a base (2), wherein a fork arm (3) is provided on the base (2), the fan body (1) is hinged to the fork arm (3), and the fan body (1) is disposed within the fork arm (3), characterized in that: The fan body (1) is provided with a motor housing (11) and a fan blade motor (17). The fan blade motor (17) is located in the front part of the motor housing (11). The fan body (1) is provided with a vertical swing drive mechanism (15). The vertical swing drive mechanism (15) includes a first motor (151), a first crank (152), a first connecting rod (153), a swing arm (154), and a force transmission arm (156). One end of the first crank (152) is mounted on the output shaft of the first motor (151), and the other end of the first crank (152) is hinged to one end of the first connecting rod (153). The other end of the connecting rod (153) is hinged to one end of the swing arm (154), the other end of the swing arm (154) is positioned and connected to one end of the force transmission arm (156), the other end of the force transmission arm (156) is positioned and connected to the fork arm (3), the swing arm (154) can swing relative to the first connecting rod (153) around the hinge axis of the fan body (1) and the fork arm (3), the first motor (151) is installed in the rear part of the motor housing (11), and the first crank (152), the first connecting rod (153) and the swing arm (154) are located in the motor housing (11).

2. The circulating fan with a fork-arm support structure according to claim 1, characterized in that: The fan body (1) includes an air inlet cover (12) and a front cover (13). The front end of the air inlet cover (12) is installed and connected to the rear end of the front cover (13). The motor housing (11) is provided with spokes (111) and a support ring (112) on the outside. One end of the spokes (111) is connected to the support ring (112) as a whole. The other end of the spokes (111) is connected to the outer wall of the motor housing (11). The support ring (112) is adapted to be located in the rear end of the front cover (13). The spokes (111) are circumferentially distributed around the axis of the front cover (13). The force transmission arm (156) is located between the two corresponding spokes (111).

3. The circulating fan with a fork-arm support structure according to claim 1, characterized in that: The base (2) includes a fixed base (21) and a movable plate assembly (22). A protruding tube (211) is formed on the fixed base (21). The movable plate assembly (22) includes a movable base (221), a plate cover (222), and a decorative cover plate (223). The plate cover (222) is adapted to be disposed inside the upper end of the movable base (221). The plate cover (222) is installed and connected to the movable base (221) by screws. The decorative cover plate (223) is abutted and covered on the plate cover (222). The movable base (221) is disposed on the fixed base (21). On the upper side of the fixed chassis (21), the fan body (1) is located directly above the decorative cover plate (223). The fork arm (3) is installed and connected to the movable chassis (221). A rotating connection hole (2211) is formed in the middle of the movable chassis (221). The convex tube (211) passes through the rotating connection hole (2211). A cover (24) is installed at the upper end of the convex tube (211). The cover (24) is attached to the upper side of the edge of the rotating connection hole (2211). The disc cover (222) is located above the cover (24).

4. The circulating fan with a fork-arm support structure according to claim 3, characterized in that: The base (2) is provided with a left-right swing drive mechanism (23). The left-right swing drive mechanism (23) includes a second motor (231), a second crank (232), a second connecting rod (233), and a swing plate (234). The second motor (231) drives the second crank (232) to rotate. The second crank (232) is connected to the swing plate (234) through the second connecting rod (233). The swing plate (234) is installed on the fixed base (21). The upper part of the swing plate (234) is adapted to be located between the outer wall of the convex tube (211) and the inner wall of the rotating connection hole (2211). The second motor (231) is installed on the upper side of the movable base (221). The second crank (232) and the second connecting rod (233) are located in the cavity formed by the fixed base (21) and the movable base (221).

5. The circulating fan with a fork-arm support structure according to claim 4, characterized in that: The decorative cover plate (223) is located inside the fork arm (3).

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