Improved fan oscillating mechanism and oscillating fan

Abstract

The utility model discloses an improved fan oscillating mechanism and an oscillating fan. The improved fan oscillating mechanism comprises a motor, a motor support, a center shaft, a rotating disc and a transmission assembly. The central shaft penetrates through the rotating disc; the motor is fixedly installed on the motor support, and an output shaft of the motor drives the rotating disc through the transmission assembly so that the rotating disc can conduct reciprocating amplitude limiting rotation relative to the motor support. A plurality of mutually independent balls are arranged between the rotating disc and the motor bracket; a ball rail is arranged on the motor bracket; when the rotating disc rotates in a reciprocating amplitude limiting mode relative to the motor support, the balls roll in the ball rails. The rotating disc comprises a disc part and a fan disc part extending outwards from the local circumferential side of the disc part. A first ball retaining column is arranged on the disc part, and a second ball retaining column is arranged on the fan disc part; the motor support comprises a first platform and a second platform, a first ball track is arranged on the first platform, and a second ball track is arranged on the second platform; the fan has the advantages that the fan can shake the head more smoothly, the stability is higher, and the occurrence of jamming, abnormal sound and shaking is reduced.

Description

Technical Field

[0001] The utility model relates to a fan, in particular to an improved fan oscillating mechanism, which can drive the head of the oscillating fan to swing back and forth within a certain angle range relative to a body of the fan, thereby changing the air supply direction. Background Art

[0002] There are two types of electric fans on the market: circulation fans and oscillating fans. Among them, oscillating fans mainly include two oscillating modes: 360-degree rotation of the head and swaying back and forth within a certain angle range relative to the body. Among oscillating fans, the latter is more popular in the market.

[0003] The oscillating motion of the oscillating fan is driven by a motor. The latter oscillating motion requires that the continuous rotation of the motor's drive shaft be converted into a back-and-forth oscillating motion within a certain angle range through a transmission mechanism. Commonly used methods include gear transmission and connecting rod transmission.

[0004] Gear transmission, such as an electric fan shaking mechanism disclosed in the utility model patent with authorization announcement number CN211501044U, includes a center gear fixed on the fan body; a driving gear installed on the head assembly of the fan; and a driving motor installed on the head assembly for driving the driving gear; wherein the driving gear and the center gear are meshed, and the head assembly is driven by the driving gear to move in a circle around the center gear so that the head assembly rotates relative to the fan body, and then the head assembly rotates relative to the fan body under the drive of the driving motor.

[0005] The connecting rod transmission is an electric fan shaking mechanism disclosed in the utility model patent with authorization announcement number CN201943981U, which includes a motor, a bracket for mounting the motor, a crank connected to the output shaft of the motor, a connecting rod hinged to the crank, and a base hinged to the connecting rod, and the base is connected to the bracket.

[0006] Compared with the gear-driven oscillating mechanism, the connecting rod-driven oscillating mechanism is more popular because of its higher stability, less noise, convenient maintenance and low manufacturing cost. The connecting rod-driven oscillating mechanism usually uses a rotating disk, the motor drives the connecting rod, and the connecting rod drives the rotating disk to rotate back and forth within a certain angle range, thereby driving the head of the oscillating fan to swing back and forth.

[0007] However, the rotating disk in the traditional oscillating mechanism is only centered on one central axis. In addition, the head of the oscillating fan is heavy, so it is easy to shake when the head swings, which leads to problems such as unsmooth oscillation and abnormal noise. Utility Model Content

[0008] In view of the fact that the traditional shaking mechanism is prone to shaking when the head is shaken, which leads to problems such as unsmooth shaking movement and abnormal noise, the technical problem to be solved by the utility model is to provide an improved fan shaking mechanism. On the basis of positioning the rotating disk on the central axis, a rolling positioning structure is further provided between the rotating disk and the motor bracket to enhance the movement stability of the shaking mechanism and even the stability of the shaking of the head of the shaking fan.

[0009] The technical solution adopted by the utility model to solve the above technical problems is: an improved fan shaking mechanism, including a motor, a motor bracket, a central shaft, a rotating disk and a transmission assembly;

[0010] The central shaft passes through the rotating disk, and one end of the central shaft is connected to the motor bracket;

[0011] The motor is fixedly mounted on the motor bracket, and the output shaft of the motor drives the rotating disk through the transmission assembly, so that the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket;

[0012] A plurality of independent balls are arranged between the rotating disk and the motor bracket; a ball track is arranged on the surface of the motor bracket facing the rotating disk; when the rotating disk rotates back and forth with limited amplitude relative to the motor bracket, the balls roll in the ball track.

[0013] The preferred technical solution adopted by the utility model to solve the above technical problems is: the transmission assembly includes an eccentric rotating member and a connecting rod;

[0014] The eccentric rotating member includes a sleeve portion and an eccentric portion eccentrically arranged on the side of the sleeve portion;

[0015] The sleeve portion is connected to the output shaft of the motor, the eccentric portion is rotatably connected to the first end of the connecting rod; the second end of the connecting rod is rotatably connected to the rotating disk;

[0016] The output shaft of the motor drives the eccentric rotating member to rotate, and drives the rotating disk to reciprocate and rotate with limited amplitude relative to the motor bracket through the connecting rod.

[0017] The preferred technical solution adopted by the utility model to solve the above technical problems is: the rotating disk includes a disc portion and a fan disc portion extending outward from a partial circumference of the disc portion; the disc portion is used to be fixed to the connecting head of the oscillating fan; at least one first ball retaining column is provided on the disc portion, and at least one second ball retaining column is provided on the fan disc portion;

[0018] The motor bracket comprises a first platform and a second platform, the first platform is provided with a first ball track corresponding to the first ball retaining column, and the second platform is provided with a second ball track corresponding to the second ball retaining column;

[0019] When the rotating disk rotates back and forth with limited amplitude relative to the motor bracket, each of the first ball retaining posts retains a ball in the first ball track for rolling, and each of the second ball retaining posts retains a ball in the second ball track for rolling.

[0020] The preferred technical solution adopted by the utility model to solve the above technical problems is: the height difference between the first platform and the rotating disk is greater than the height difference between the second platform and the rotating disk, and the height of the first ball retaining column is greater than that of the second ball retaining column;

[0021] The transmission assembly is connected to the disc portion; a receiving space is formed between the first platform and the rotating disc, and the transmission assembly moves in the receiving space;

[0022] There are three balls in total. Two first ball retaining columns are symmetrically arranged on the disc portion, and a second ball retaining column is arranged on the fan disc portion.

[0023] The preferred technical solution adopted by the utility model to solve the above technical problems is: a first central hole is provided on the motor bracket, and an axial hole is provided next to the first central hole; the output shaft of the motor passes through the axial hole and is connected to the transmission assembly;

[0024] The rotating disk is provided with a central sleeve, the central sleeve extends in a direction away from the motor bracket, and the rotating disk is provided with a second central hole penetrating the central sleeve;

[0025] The first end of the central shaft extends into the first central hole to be connected to the motor bracket, and the central shaft passes through the second central hole; the second end of the central shaft extends from the bottom end of the central shaft sleeve to be connected to the body of the oscillating fan;

[0026] A retaining spring groove is formed at the second end of the central shaft; the retaining spring is retained in the retaining spring groove.

[0027] Another technical solution adopted by the utility model to solve the above technical problems is: an improved fan shaking mechanism, including a motor, a motor bracket, a central shaft, a rotating disk and a transmission assembly;

[0028] The central shaft passes through the rotating disk, and one end of the central shaft is connected to the motor bracket;

[0029] The motor is fixedly mounted on the motor bracket, and the output shaft of the motor drives the rotating disk through the transmission assembly, so that the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket;

[0030] A plurality of independent balls are arranged between the rotating disk and the motor bracket; a ball track is arranged on the surface of the motor bracket facing the rotating disk; when the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket, the balls roll in the ball track;

[0031] The rotating disk includes a disk portion and a fan disk portion extending outward from a partial circumference of the disk portion; the disk portion is used to be fixed to a connecting head of an oscillating fan; the disk portion is provided with at least one first ball retaining column, and the fan disk portion is provided with at least one second ball retaining column;

[0032] The motor bracket comprises a first platform and a second platform, the first platform is provided with a first ball track corresponding to the first ball retaining column, and the second platform is provided with a second ball track corresponding to the second ball retaining column;

[0033] When the rotating disk rotates back and forth with limited amplitude relative to the motor bracket, each of the first ball retaining posts retains a ball in the first ball track for rolling, and each of the second ball retaining posts retains a ball in the second ball track for rolling.

[0034] Another preferred technical solution adopted by the utility model to solve the above technical problem is: the transmission assembly includes an eccentric rotating member and a connecting rod;

[0035] The eccentric rotating member includes a sleeve portion and an eccentric portion eccentrically arranged on the side of the sleeve portion;

[0036] The sleeve portion is connected to the output shaft of the motor, the eccentric portion is rotatably connected to the first end of the connecting rod; the second end of the connecting rod is rotatably connected to the rotating disk;

[0037] The output shaft of the motor drives the eccentric rotating member to rotate, and drives the rotating disk to reciprocate and rotate with limited amplitude relative to the motor bracket through the connecting rod.

[0038] Another technical solution adopted by the utility model to solve the above technical problem is preferably: the height difference between the first platform and the rotating disk is greater than the height difference between the second platform and the rotating disk, and the height of the first ball retaining column is greater than that of the second ball retaining column;

[0039] The transmission assembly is connected to the disc portion; a receiving space is formed between the first platform and the rotating disc, and the transmission assembly moves in the receiving space;

[0040] There are three balls in total. Two first ball retaining columns are symmetrically arranged on the disc portion, and a second ball retaining column is arranged on the fan disc portion.

[0041] Another preferred technical solution adopted by the utility model to solve the above technical problem is: a first central hole is provided on the motor bracket, and an axial hole is provided next to the first central hole; the output shaft of the motor passes through the axial hole and is connected to the transmission assembly;

[0042] The rotating disk is provided with a central sleeve, the central sleeve extends in a direction away from the motor bracket, and the rotating disk is provided with a second central hole penetrating the central sleeve;

[0043] The first end of the central shaft extends into the first central hole to be connected to the motor bracket, and the central shaft passes through the second central hole; the second end of the central shaft extends from the bottom end of the central shaft sleeve to be connected to the body of the oscillating fan;

[0044] A retaining spring groove is formed at the second end of the central shaft; the retaining spring is retained in the retaining spring groove.

[0045] Another technical solution adopted by the utility model to solve the above technical problems is: an improved fan shaking mechanism, including a motor, a motor bracket, a central shaft, a rotating disk and a transmission assembly;

[0046] The central shaft passes through the rotating disk, and one end of the central shaft is connected to the motor bracket;

[0047] The motor is fixedly mounted on the motor bracket, and the output shaft of the motor drives the rotating disk through the transmission assembly, so that the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket;

[0048] A plurality of independent balls are arranged between the rotating disk and the motor bracket; a ball track is arranged on the surface of the motor bracket facing the rotating disk; when the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket, the balls roll in the ball track;

[0049] The rotating disk is provided with at least one first ball retaining column and at least one second ball retaining column;

[0050] The motor bracket comprises a first platform and a second platform, the first platform is provided with a first ball track corresponding to the first ball retaining column, and the second platform is provided with a second ball track corresponding to the second ball retaining column;

[0051] When the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket, each of the first ball retaining columns retains a ball in the first ball track for rolling, and each of the second ball retaining columns retains a ball in the second ball track for rolling;

[0052] A height difference between the first platform and the rotating disk is greater than a height difference between the second platform and the rotating disk, and a height of the first ball retaining column is greater than a height of the second ball retaining column; a receiving space is formed between the first platform and the rotating disk, and the transmission assembly moves in the receiving space.

[0053] Another preferred technical solution adopted by the utility model to solve the above technical problem is: the transmission assembly includes an eccentric rotating member and a connecting rod;

[0054] The eccentric rotating member includes a sleeve portion and an eccentric portion eccentrically arranged on the side of the sleeve portion;

[0055] The sleeve portion is connected to the output shaft of the motor, the eccentric portion is rotatably connected to the first end of the connecting rod; the second end of the connecting rod is rotatably connected to the rotating disk;

[0056] The output shaft of the motor drives the eccentric rotating member to rotate, and drives the rotating disk to reciprocate and rotate with limited amplitude relative to the motor bracket through the connecting rod.

[0057] Another technical solution adopted by the utility model to solve the above technical problem is preferably: the rotating disk includes a disc portion and a fan disc portion extending outward from a partial circumference of the disc portion; the transmission assembly is connected to the disc portion; the disc portion is used to be fixed to the connecting head of the oscillating fan;

[0058] There are three balls in total. Two first ball retaining columns are symmetrically arranged on the disc portion, and a second ball retaining column is arranged on the fan disc portion.

[0059] Another preferred technical solution adopted by the utility model to solve the above technical problem is: a first central hole is provided on the motor bracket, and an axial hole is provided next to the first central hole; the output shaft of the motor passes through the axial hole and is connected to the transmission assembly;

[0060] The rotating disk is provided with a central sleeve, the central sleeve extends in a direction away from the motor bracket, and the rotating disk is provided with a second central hole penetrating the central sleeve;

[0061] The first end of the central shaft extends into the first central hole to be connected to the motor bracket, and the central shaft passes through the second central hole; the second end of the central shaft extends from the bottom end of the central shaft sleeve to be connected to the body of the oscillating fan;

[0062] A retaining spring groove is formed at the second end of the central shaft; the retaining spring is retained in the retaining spring groove.

[0063] Another technical solution adopted by the utility model to solve the above technical problems is: an oscillating fan comprises a fan head and a body, the body comprises a main body part and a bracket part, the fan head is mounted on the main body part, the main body part can reciprocate and limit the rotation relative to the bracket part to drive the fan head to reciprocate and limit the swing;

[0064] Also included is an improved fan oscillating mechanism and connector;

[0065] The host part is provided with an installation cavity inside, the improved fan shaking mechanism is installed in the installation cavity, and the motor bracket is fixed to the inside of the installation cavity;

[0066] The first end of the connector is fixed to the rotating disk in the installation cavity, and the second end of the connector is fixed to the bracket portion;

[0067] Driven by the motor, the motor bracket can rotate back and forth with limited amplitude relative to the rotating disk, and then the host part can rotate back and forth with limited amplitude relative to the bracket part.

[0068] Another technical solution adopted by the utility model to solve the above-mentioned technical problem is preferably: the rotating disk includes a disc portion and a fan disc portion extending outward from a partial circumferential side of the disc portion; the disc portion is fixed to the connecting head of the oscillating fan; the direction of the fan disc portion is opposite to the direction of the fan head.

[0069] Compared with the prior art, the advantages of the utility model are: first, a number of balls are restricted to move in the ball track, thereby playing a radial positioning role in the relative rotation between the rotating disk and the motor bracket; second, the balls play a supporting role in the axial direction for the rotating disk and the motor bracket; third, the balls roll between the rotating disk and the motor bracket, and the rolling friction is small. The above three effects are combined to make the relative reciprocating limited rotation between the rotating disk and the motor bracket smoother and more stable, and further make the process of the main unit driving the fan head to swing back and forth with limited amplitude smoother and more stable, reducing the occurrence of jamming, abnormal noise, and shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0071] Figure 1 This is a structural schematic diagram of an oscillating fan in a preferred embodiment of the utility model;

[0072] Figure 2 A cross-sectional view of an oscillating fan according to a preferred embodiment of the utility model;

[0073] Figure 3 for Figure 1 A local enlarged view at point A;

[0074] Figure 4 for Figure 2 A local enlarged view at point B;

[0075] Figure 5 This is an exploded view of an improved fan shaking mechanism according to a preferred embodiment of the utility model;

[0076] Figure 6 The structure diagram of the improved fan shaking mechanism of a preferred embodiment of the utility model is shown in FIG. Figure 1 ;

[0077] Figure 7 The structure diagram of the improved fan shaking mechanism of a preferred embodiment of the utility model is shown in FIG. Figure 2 ;

[0078] Figure 8 The structure diagram of the improved fan shaking mechanism of a preferred embodiment of the utility model is shown in FIG. Figure 3 ;

[0079] Fig. 9 The structure diagram of the improved fan shaking mechanism of a preferred embodiment of the utility model is shown in FIG. Figure 4 ;

[0080] Fig.10 The structure diagram of the improved fan shaking mechanism of a preferred embodiment of the utility model is shown in FIG. Figure 5 ;

[0081] Fig.11 The structure diagram of the improved fan shaking mechanism of a preferred embodiment of the utility model is shown in FIG. Figure 6 ;

[0082] Description of reference numerals:

[0083] Oscillating fan 200, fan head 210, fan blades 211, fan cover 212, fuselage 220, main unit part 221, bracket part 222, mounting cavity 223, top plate 224, connector 230, improved fan oscillating mechanism 100, motor 10, output shaft 11, motor bracket 20, ball tracks 21, 22, first ball track 21, second ball track 22, first platform 23, second platform 24, first center hole 25, shaft hole 26, accommodating space k, center axis 30, retaining spring groove 31, retaining spring 32, rotating disk 40, disk part 41, fan disk part 42, first ball retaining column 43, second ball retaining column 44, center sleeve 45, second center hole 46, transmission assembly 50, eccentric rotating member 51, sleeve part 52, eccentric part 53, connecting rod 54, ball z. DETAILED DESCRIPTION

[0084] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0085] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. "First" and "second" are only for the purpose of making the description easier to understand, without any other directional meaning, and cannot be used as a limitation on the present utility model.

[0086] like Figure 1 and Figure 2 The oscillating fan 200 provided in this embodiment is shown, comprising a fan head 210 and a body 220. The fan head 210 comprises a fan blade 211 and a fan cover 212 arranged outside the fan blade 211. The body 220 comprises a main body part 221 and a bracket part 222, the fan head 210 is mounted on the main body part 221, and the bracket part 222 can support the main body part 221 and the fan head 210.

[0087] The main body part 221 can rotate back and forth with limited amplitude relative to the bracket part 222 to drive the fan head 210 to swing back and forth with limited amplitude, so that the fan head 210 of the oscillating fan 200 swings back and forth within a certain angle range to supply air.

[0088] The oscillating fan 200 includes an improved fan oscillating mechanism 100 and a connector 230. The interior of the host part 221 is provided with a mounting cavity 223, the improved fan oscillating mechanism 100 is mounted in the mounting cavity 223, and the connector 230 is used to connect and fix the improved fan oscillating mechanism 100 and the bracket part 222.

[0089] like Figures 5 to 11 The improved fan oscillating mechanism 100 provided in this embodiment is shown, which includes a motor 10, a motor bracket 20, a central shaft 30, a rotating disk 40 and a transmission assembly 50. The central shaft 30 passes through the rotating disk 40, and one end of the central shaft 30 is connected to the motor bracket 20.

[0090] The motor 10 provided in this embodiment is a synchronous motor, which is fixedly mounted on the motor bracket 20. The output shaft 11 of the motor 10 drives the rotating disk 40 through the transmission assembly 50, so that the rotating disk 40 reciprocates and rotates with limited amplitude relative to the motor bracket 20. The relative rotation between the rotating disk 40 and the motor bracket 20 is based on the central axis 30 as the rotation axis, and the central axis 30 plays a role in centering the relative rotation between the two.

[0091] like Figure 5 , Figure 7 and Fig.10 As shown, a plurality of independent balls z are arranged between the rotating disk 40 and the motor bracket 20, and the motor bracket 20 is provided with a ball track 21 on the surface facing the rotating disk 40. When the rotating disk 40 reciprocates and rotates with limited amplitude relative to the motor bracket 20, the balls z roll in the ball tracks 21 and 22, thereby achieving at least the following technical effects:

[0092] First, a number of balls z are restricted to move in the ball tracks 21, 22, thereby playing a radial positioning role in the relative rotation between the rotating disk 40 and the motor bracket 20; second, the balls z play a supporting role in the axial direction of the rotating disk 40 and the motor bracket 20; third, the balls z roll between the rotating disk 40 and the motor bracket 20, and the rolling friction is small. The above three effects are combined to make the relative reciprocating limited rotation between the rotating disk 40 and the motor bracket 20 smoother and more stable, and further make the process of the main unit 221 driving the fan head 210 to swing back and forth with limited amplitude smoother and more stable, reducing the occurrence of jamming, abnormal noise, and shaking.

[0093] like Figure 5 and Fig.10 As shown, the transmission assembly 50 includes an eccentric rotating member 51 and a connecting rod 54, and the eccentric rotating member 51 includes a sleeve portion 52 and an eccentric portion 53 eccentrically arranged on the side of the sleeve portion 52. The sleeve portion 52 is connected to the output shaft 11 of the motor 10, the eccentric portion 53 is rotatably connected to the first end of the connecting rod 54, and the second end of the connecting rod 54 is rotatably connected to the rotating disk 40.

[0094] After the motor 10 is started, the output shaft 11 of the motor 10 rotates, driving the eccentric rotating member 51 to rotate, wherein the sleeve portion 52 rotates along with the output shaft 11 of the motor 10, and the eccentric portion 53 revolves around the sleeve portion 52, pushing and pulling the connecting rod 54 back and forth, and the connecting rod 54 further pushes and pulls the rotating disk 40 back and forth, thereby driving the rotating disk 40 to rotate reciprocally and limitedly relative to the motor bracket 20 through the connecting rod 54.

[0095] The transmission mode applicable to the improved fan oscillating mechanism 100 provided by the utility model is not limited to the connecting rod transmission mode provided in this embodiment, and can also be referred to the gear transmission mode, for example, the transmission assembly 50 is replaced by the driving gear and the central gear in the utility model patent with the authorization announcement number CN211501044U mentioned in the background technology. However, the connecting rod transmission mode has high movement stability, less noise, convenient maintenance and low manufacturing cost.

[0096] Furthermore, if Figure 7 , Fig. 9 and Fig.11 As shown, the rotating disk 40 also adopts an eccentric structure design, including a disk portion 41 and a fan disk portion 42 extending outward from a partial circumference of the disk portion 41. The disk portion 41 is used to be fixed to the connector 230 of the oscillating fan 200. The rotation axis of the rotating disk 40 for reciprocating limited rotation relative to the motor bracket 20 is located at the center of the disk portion 41.

[0097] In this embodiment, the transmission assembly 50 is connected to the disk portion 41, that is, the second end of the connecting rod 54 can be rotatably connected to the disk portion 41 of the rotating disk 40. In other embodiments, the transmission assembly 50 can also be connected to the fan disk portion 42, that is, the second end of the connecting rod 54 can be rotatably connected to the fan disk portion 42 of the rotating disk 40. However, under the premise that the size and shape of the connecting rod 54 are the same, the former has a larger range of limited rotation angles, so that the air supply range of the oscillating fan 200 is larger.

[0098] like Figure 5 and Fig. 9 As shown, at least one first ball retaining column 43 is provided on the disc portion 41, and at least one second ball retaining column 44 is provided on the fan disc portion 42. Preferably, in this embodiment, there are three balls z, two first ball retaining columns 43 are symmetrically provided on the disc portion 41, and one second ball retaining column 44 is provided on the fan disc portion 42, and each ball retaining column 43, 44 corresponds to a ball z.

[0099] like Figure 8 , Figure 7 and Fig.10As shown, the motor bracket 20 includes a first platform 23 and a second platform 24. The first platform 23 is provided with a first ball track 21 corresponding to the first ball retaining column 43, and the second platform 24 is provided with a second ball track 22 corresponding to the second ball retaining column 44. When the rotating disk 40 reciprocates and rotates with limited amplitude relative to the motor bracket 20, the two first ball retaining columns 43 keep a ball z in the first ball track 21 for rolling, and the second ball retaining column 44 keeps a ball z in the second ball track 22 for rolling.

[0100] In other embodiments, the number of balls z is not limited to 3, and the number of the first ball retaining column 43 and the second ball retaining column 44 corresponds to the number of balls z. Each first ball retaining column 43 retains one ball z in the first ball track 21 for rolling, and each second ball retaining column 44 retains one ball z in the second ball track 22 for rolling. However, the balls z should be distributed evenly and symmetrically relative to the disk portion 41 and the fan disk portion 42 as much as possible to ensure that the axial support force of the rotating disk 40 and the motor bracket 20 is uniform when they rotate relative to each other, thereby improving stability.

[0101] However, the preferred solution adopted in this embodiment is that the three balls z form a stable isosceles triangle structure, which ensures the best technical effect while maximizing the reduction of consumables and process costs.

[0102] like Figure 7 , Figure 8 and Fig.10 As shown, the height difference between the first platform 23 and the rotating disk 40 is greater than the height difference between the second platform 24 and the rotating disk 40. To accommodate the height difference between the first platform 23 and the second platform 24, the heights of the two first ball retaining columns 43 are equal, and the height of the first ball retaining column 43 is greater than that of the second ball retaining column 44.

[0103] Thus, a receiving space k is formed between the first platform 23 and the rotating disk 40. With the eccentric structure design of the rotating disk 40, the transmission assembly 50 can move in the receiving space k without hindrance. This structural design also reflects the consideration of the overall balance of the oscillating fan 200. As shown in Figure *, since the fan head 210 has a large counterweight, in order to balance the center of gravity, the upper part of the main unit 221 adopts a back-bending design. Preferably, the direction of the fan disc part 42 is opposite to that of the fan head 210, the two higher first ball retaining columns 43 of the disc part 41 are in the same direction as the fan head 210, and the height difference between the second platform 24 opposite to the fan head 210 and the rotating disk 40 is smaller, thereby contributing to the balance of the center of gravity of the whole machine and reducing shaking when shaking the head.

[0104] like Figure 5 and Fig. 9As shown, the motor bracket 20 is provided with a first center hole 25, and a shaft hole 26 is provided beside the first center hole 25. The output shaft 11 of the motor 10 passes through the shaft hole 26 and is connected to the transmission assembly 50. The rotating disk 40 is provided with a center sleeve 45, which extends in a direction away from the motor bracket 20, and the rotating disk 40 is provided with a second center hole 46 that passes through the center sleeve 45.

[0105] The first end of the center shaft 30 extends into the first center hole 25 to connect with the motor bracket 20 , and the center shaft 30 passes through the second center hole 46 so that part of the center shaft 30 is inserted into the center sleeve 45 . The center sleeve 45 positions and retains the center shaft 30 in the circumferential and radial directions.

[0106] In addition, it can be seen that since the output shaft 11 of the motor 10 is connected to the transmission assembly 50 through the shaft hole 26 which is eccentric to the first center hole 25, the transmission assembly 50 is deviated as a whole and is set independently from the center axis 30 which serves as the rotation axis. On the one hand, the two will not hinder each other during the movement, and on the other hand, the angle range of the reciprocating limited rotation can be further increased.

[0107] like Figure 6 and Figure 7 As shown, the second end of the central shaft 30 extends out from the bottom end of the central sleeve 45, and is used to connect to the body 220 of the oscillating fan 200. Specifically, the bracket part 222 has a top plate 224, and a retaining spring groove 31 is provided at the second end of the central shaft 30. The second end of the central shaft 30 is connected to the top plate 224, and the retaining spring 32 is clamped in the retaining spring groove 31. Based on the different misalignment relationships between the bottom surface of the central sleeve 45, the upper and lower walls of the retaining spring groove 31, and the top surface of the top plate 224 after assembly, the elasticity of the retaining spring 32 compensates for this misalignment relationship and plays a certain buffering role.

[0108] like Figure 4 As shown, after the assembly is completed, the motor bracket 20 is fixed to the inside of the mounting cavity 223, and the first end of the connector 230 is fixed to the rotating disk 40 in the mounting cavity 223. In this embodiment, the connector 230 is a cylinder, and its size matches the disk portion 41, and is fixed to the disk portion 41. The second end of the connector 230 is fixed to the bracket portion 222, which is fixed to the top of the bracket portion 222 and connected to the top plate 224.

[0109] Driven by the motor 10, the motor bracket 20 rotates back and forth in a limited range relative to the rotating disk 40, and then the main unit part 221 can rotate back and forth in a limited range relative to the bracket part 222, so as to drive the fan head 210 to swing back and forth in a limited range, so that the fan head 210 of the oscillating fan 200 swings back and forth within a certain angle range to supply air.

[0110] It should be understood that, in the foregoing description of the structure and working principle of the improved fan oscillating mechanism 100, for ease of understanding, it is assumed that the motor bracket 20 is stationary and the rotating disk 40 reciprocates and limits relative to the motor bracket 20. However, from the overall perspective of the oscillating fan 200, assuming that the bracket portion 222 is stationary is more in line with the scenario when the oscillating fan 200 is in use. The connector 230 is fixedly connected to the bracket portion 222 and the rotating disk 40, so the connector and the rotating disk 40 are also stationary relative to the bracket portion 222 in the circumferential direction. Based on the relativity of motion, it can be understood that the motor bracket 20 reciprocates and limits relative to the rotating disk 40, and the motor bracket 20 is fixed to the main unit portion 221, so that the main unit portion 221 and the fan head 210 reciprocate and limit relative to the bracket portion 222.

[0111] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0112] The above is an introduction to the improved fan oscillating mechanism and oscillating fan provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. Improved fan shaking mechanism, characterized by: It includes a motor, a motor bracket, a central shaft, a rotating disk and a transmission assembly; The central shaft passes through the rotating disk, and one end of the central shaft is connected to the motor bracket; The motor is fixedly mounted on the motor bracket, and the output shaft of the motor drives the rotating disk through the transmission assembly, so that the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket; A plurality of independent balls are arranged between the rotating disk and the motor bracket; a ball track is arranged on the surface of the motor bracket facing the rotating disk; when the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket, the balls roll in the ball track; The rotating disk includes a disk portion and a fan disk portion extending outward from a partial circumference of the disk portion; the disk portion is used to be fixed to a connecting head of an oscillating fan; the disk portion is provided with at least one first ball retaining column, and the fan disk portion is provided with at least one second ball retaining column; The motor bracket comprises a first platform and a second platform, the first platform is provided with a first ball track corresponding to the first ball retaining column, and the second platform is provided with a second ball track corresponding to the second ball retaining column; When the rotating disk rotates back and forth with limited amplitude relative to the motor bracket, each of the first ball retaining posts retains a ball in the first ball track for rolling, and each of the second ball retaining posts retains a ball in the second ball track for rolling.

2. The improved fan oscillating mechanism according to claim 1 is characterized in that: The transmission assembly includes an eccentric rotating member and a connecting rod; The eccentric rotating member includes a sleeve portion and an eccentric portion eccentrically arranged on the side of the sleeve portion; The sleeve portion is connected to the output shaft of the motor, the eccentric portion is rotatably connected to the first end of the connecting rod; the second end of the connecting rod is rotatably connected to the rotating disk; The output shaft of the motor drives the eccentric rotating member to rotate, and drives the rotating disk to reciprocate and rotate with limited amplitude relative to the motor bracket through the connecting rod.

3. The improved fan oscillating mechanism according to claim 1 is characterized in that: The height difference between the first platform and the rotating disk is greater than the height difference between the second platform and the rotating disk, and the height of the first ball retaining column is greater than that of the second ball retaining column; The transmission assembly is connected to the disc portion; a receiving space is formed between the first platform and the rotating disc, and the transmission assembly moves in the receiving space; There are three balls in total. Two first ball retaining columns are symmetrically arranged on the disc portion, and a second ball retaining column is arranged on the fan disc portion.

4. The improved fan oscillating mechanism according to claim 1 is characterized in that: The motor bracket is provided with a first central hole, and a shaft hole is provided next to the first central hole; the output shaft of the motor passes through the shaft hole and is connected to the transmission assembly; The rotating disk is provided with a central sleeve, the central sleeve extends in a direction away from the motor bracket, and the rotating disk is provided with a second central hole penetrating the central sleeve; The first end of the central shaft extends into the first central hole to be connected to the motor bracket, and the central shaft passes through the second central hole; the second end of the central shaft extends from the bottom end of the central shaft sleeve to be connected to the body of the oscillating fan; A retaining spring groove is formed at the second end of the central shaft; the retaining spring is retained in the retaining spring groove.

5. Improved fan shaking mechanism, characterized by: It includes a motor, a motor bracket, a central shaft, a rotating disk and a transmission assembly; The central shaft passes through the rotating disk, and one end of the central shaft is connected to the motor bracket; The motor is fixedly mounted on the motor bracket, and the output shaft of the motor drives the rotating disk through the transmission assembly, so that the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket; A plurality of independent balls are arranged between the rotating disk and the motor bracket; a ball track is arranged on the surface of the motor bracket facing the rotating disk; when the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket, the balls roll in the ball track; The rotating disk is provided with at least one first ball retaining column and at least one second ball retaining column; The motor bracket comprises a first platform and a second platform, the first platform is provided with a first ball track corresponding to the first ball retaining column, and the second platform is provided with a second ball track corresponding to the second ball retaining column; When the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket, each of the first ball retaining columns retains a ball in the first ball track for rolling, and each of the second ball retaining columns retains a ball in the second ball track for rolling; A height difference between the first platform and the rotating disk is greater than a height difference between the second platform and the rotating disk, and a height of the first ball retaining column is greater than a height of the second ball retaining column; a receiving space is formed between the first platform and the rotating disk, and the transmission assembly moves in the receiving space.

6. The improved fan oscillating mechanism according to claim 5, characterized in that: The transmission assembly includes an eccentric rotating member and a connecting rod; The eccentric rotating member includes a sleeve portion and an eccentric portion eccentrically arranged on the side of the sleeve portion; The sleeve portion is connected to the output shaft of the motor, the eccentric portion is rotatably connected to the first end of the connecting rod; the second end of the connecting rod is rotatably connected to the rotating disk; The output shaft of the motor drives the eccentric rotating member to rotate, and drives the rotating disk to reciprocate and rotate with limited amplitude relative to the motor bracket through the connecting rod.

7. The improved fan oscillating mechanism according to claim 5, characterized in that: The rotating disk includes a disc portion and a fan disc portion extending outward from a partial circumference of the disc portion; the transmission assembly is connected to the disc portion; the disc portion is used to be fixed to the connecting head of the oscillating fan; There are three balls in total. Two first ball retaining columns are symmetrically arranged on the disc portion, and a second ball retaining column is arranged on the fan disc portion.

8. The improved fan oscillating mechanism according to claim 5, characterized in that: The motor bracket is provided with a first central hole, and a shaft hole is provided next to the first central hole; the output shaft of the motor passes through the shaft hole and is connected to the transmission assembly; The rotating disk is provided with a central sleeve, the central sleeve extends in a direction away from the motor bracket, and the rotating disk is provided with a second central hole penetrating the central sleeve; The first end of the central shaft extends into the first central hole to be connected to the motor bracket, and the central shaft passes through the second central hole; the second end of the central shaft extends from the bottom end of the central shaft sleeve to be connected to the body of the oscillating fan; A retaining spring groove is formed at the second end of the central shaft; the retaining spring is retained in the retaining spring groove.

9. Improved fan shaking mechanism, characterized by: It includes a motor, a motor bracket, a central shaft, a rotating disk and a transmission assembly; The central shaft passes through the rotating disk, and one end of the central shaft is connected to the motor bracket; The motor is fixedly mounted on the motor bracket, and the output shaft of the motor drives the rotating disk through the transmission assembly, so that the rotating disk reciprocates and rotates with limited amplitude relative to the motor bracket; A plurality of independent balls are arranged between the rotating disk and the motor bracket; a ball track is arranged on the surface of the motor bracket facing the rotating disk; when the rotating disk rotates back and forth with limited amplitude relative to the motor bracket, the balls roll in the ball track.

10. The improved fan oscillating mechanism according to claim 9, characterized in that: The transmission assembly includes an eccentric rotating member and a connecting rod; The eccentric rotating member includes a sleeve portion and an eccentric portion eccentrically arranged on the side of the sleeve portion; The sleeve portion is connected to the output shaft of the motor, the eccentric portion is rotatably connected to the first end of the connecting rod; the second end of the connecting rod is rotatably connected to the rotating disk; The output shaft of the motor drives the eccentric rotating member to rotate, and drives the rotating disk to reciprocate and rotate with limited amplitude relative to the motor bracket through the connecting rod.

11. The improved fan oscillating mechanism according to claim 9, characterized in that: The rotating disk includes a disk portion and a fan disk portion extending outward from a partial circumference of the disk portion; the disk portion is used to be fixed to a connecting head of an oscillating fan; the disk portion is provided with at least one first ball retaining column, and the fan disk portion is provided with at least one second ball retaining column; The motor bracket comprises a first platform and a second platform, the first platform is provided with a first ball track corresponding to the first ball retaining column, and the second platform is provided with a second ball track corresponding to the second ball retaining column; When the rotating disk rotates back and forth with limited amplitude relative to the motor bracket, each of the first ball retaining posts retains a ball in the first ball track for rolling, and each of the second ball retaining posts retains a ball in the second ball track for rolling.

12. The improved fan oscillating mechanism according to claim 11, characterized in that: The height difference between the first platform and the rotating disk is greater than the height difference between the second platform and the rotating disk, and the height of the first ball retaining column is greater than that of the second ball retaining column; The transmission assembly is connected to the disc portion; a receiving space is formed between the first platform and the rotating disc, and the transmission assembly moves in the receiving space; There are three balls in total. Two first ball retaining columns are symmetrically arranged on the disc portion, and a second ball retaining column is arranged on the fan disc portion.

13. The improved fan oscillating mechanism according to claim 9, characterized in that: The motor bracket is provided with a first central hole, and a shaft hole is provided next to the first central hole; the output shaft of the motor passes through the shaft hole and is connected to the transmission assembly; The rotating disk is provided with a central sleeve, the central sleeve extends in a direction away from the motor bracket, and the rotating disk is provided with a second central hole penetrating the central sleeve; The first end of the central shaft extends into the first central hole to be connected to the motor bracket, and the central shaft passes through the second central hole; the second end of the central shaft extends from the bottom end of the central shaft sleeve to be connected to the body of the oscillating fan; A retaining spring groove is formed at the second end of the central shaft; the retaining spring is retained in the retaining spring groove.

14. An oscillating fan, comprising a fan head and a body, wherein the body comprises a main body part and a bracket part, the fan head is mounted on the main body part, and the main body part can reciprocate and rotate with limited amplitude relative to the bracket part to drive the fan head to swing with limited amplitude reciprocation; Features: Also includes the improved fan shaking mechanism and connector as described in any one of claims 1-13; The host part is provided with an installation cavity inside, the improved fan shaking mechanism is installed in the installation cavity, and the motor bracket is fixed to the inside of the installation cavity; The first end of the connector is fixed to the rotating disk in the installation cavity, and the second end of the connector is fixed to the bracket portion; Driven by the motor, the motor bracket can rotate back and forth with limited amplitude relative to the rotating disk, and then the host part can rotate back and forth with limited amplitude relative to the bracket part.

15. The oscillating fan according to claim 14, characterized in that: The rotating disk includes a disk portion and a fan disk portion extending outward from a partial circumference of the disk portion; the disk portion is fixed to a connecting head of an oscillating fan; and the direction of the fan disk portion is opposite to that of the fan head portion.

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