Head shaking mechanism and electric heater

Abstract

The present application relates to a kind of head shaking mechanism and electric heater.The rotating disc assembly includes rotating disc and annular friction member fixed on the rotating disc;Support, relatively the rotating disc can rotate;And drive assembly, installed in the support, so that drive assembly has output end and the output end is fixedly connected with the rotating disc assembly;Wherein, the annular friction member is located between the rotating disc and the support, the side of the annular friction member away from the rotating disc is used to support the support;The drive assembly is used to provide the driving force for making the support rotate relative to the rotating disc.The head shaking mechanism and electric heater provided by the present application, by setting annular friction member, make the head of support stable and reliable, and get rid of ball structure and other components, so that the number of parts is greatly reduced, so assembly time is shortened, disassembly efficiency is improved, and the whole machine cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to an oscillating mechanism and an electric heater. Background Technology

[0002] Electric heaters in household appliances need to use an oscillating mechanism to swing the head back and forth within a certain range in order to distribute heat evenly throughout the room.

[0003] The common oscillation mechanism of existing electric heaters is a synchronous motor driving a crank-connecting rod mechanism to oscillate. In order to ensure smooth and stable oscillation, the crank-connecting rod mechanism usually uses multiple friction rings and ball bearings to support the body and the base and facilitate rotation between them. However, the assembly of multiple friction rings and ball bearings involves many parts, which leads to long assembly time and high cost. Summary of the Invention

[0004] Therefore, it is necessary to address the problem that the oscillation mechanism of existing electric heaters is time-consuming and costly to assemble, and to provide an oscillation mechanism and electric heater that is simple to assemble and low in cost.

[0005] According to one aspect of the present invention, a swaying mechanism is provided, comprising:

[0006] A turntable assembly, including a turntable and an annular friction element fixed on the turntable;

[0007] The support is rotatable relative to the turntable; and

[0008] The drive assembly is mounted on the bracket, so the drive assembly has an output end and the output end is fixedly connected to the turntable assembly;

[0009] The annular friction element is located between the turntable and the bracket, and the side of the annular friction element facing away from the turntable is used to support the bracket.

[0010] The drive assembly is used to provide a driving force that causes the support to rotate relative to the turntable.

[0011] In one embodiment, the annular friction element and the bracket are in line contact, surface contact, or point contact.

[0012] In one embodiment, when the bracket rotates relative to the turntable, the bracket remains in contact with the annular friction element;

[0013] The diameter ratio of the annular friction element to the turntable is R, and 0.3 < R < 0.6.

[0014] In one embodiment, the turntable assembly further includes a rotating shaft, one end of which is fixed to the turntable assembly, and the bracket rotates relative to the turntable about the rotating shaft;

[0015] The annular friction element is arranged around the rotating shaft.

[0016] In one embodiment, the turntable assembly further includes a bushing, the bushing being disc-shaped, the rotating shaft and the annular friction element being fixed to the bushing, and the bushing being fixed to the turntable.

[0017] In one embodiment, the turntable assembly further includes a first positioning member disposed on the side of the bushing facing the turntable, and the turntable includes a second positioning member adapted to the first positioning member to position the bushing on the turntable.

[0018] In one embodiment, the first positioning member includes a foolproof boss, and the second positioning member includes a foolproof groove adapted to the foolproof boss; or

[0019] The first positioning element includes a foolproof groove, and the second positioning element includes a foolproof boss that is adapted to the foolproof groove.

[0020] In one embodiment, the first positioning element includes a positioning post, and the second positioning element includes a positioning groove adapted to the positioning post; or

[0021] The first positioning element includes a positioning groove, and the second positioning element includes a positioning post adapted to the positioning groove.

[0022] In one embodiment, the turntable assembly further includes a first connector, through which the bushing is connected to the turntable.

[0023] In one embodiment, the first connector includes a screw, and the turntable assembly further includes a screw post. The screw post is disposed on the side of the bushing facing the turntable, and the turntable has a screw through hole corresponding to the screw post. The screw passes through the screw through hole and is connected to the screw post.

[0024] In one embodiment, the annular friction element, the rotating shaft, and the bushing are integrally formed.

[0025] In one embodiment, the bracket has a shaft hole, one end of the rotating shaft passes through the shaft hole, and a gap is formed between the rotating shaft and the shaft hole along the radial direction of the shaft.

[0026] In one embodiment, the annular friction element is made of a wear-resistant material, while the turntable and the bracket are both made of non-wear-resistant materials.

[0027] In one embodiment, the bracket has a first groove on one side surface facing the turntable, and the annular friction member on the side away from the turntable contacts the bottom wall of the first groove, with a gap formed between the outer side wall of the annular friction member along its circumference and the side wall of the first groove.

[0028] In one embodiment, the drive assembly includes a motor, a crank, and a connecting rod. The motor is fixedly connected to the bracket, and the motor has a motor shaft. The motor shaft is connected to one end of the connecting rod via the crank, and the other end of the connecting rod is fixedly connected to the turntable assembly.

[0029] In one embodiment, the bracket has a guide post on the side facing the turntable, and the turntable has a first through hole;

[0030] The guide post can be slidably positioned in the first through hole along the direction of rotation of the bracket relative to the turntable.

[0031] In one embodiment, the swaying mechanism further includes a friction plate, which is mounted on the side of the turntable away from the bracket via the guide post, and a gap is formed between the friction plate and the turntable along the axial direction of the turntable;

[0032] The radial dimension of the first through hole along the turntable is smaller than the radial dimension of the friction pad along the turntable.

[0033] In another aspect, the present invention provides an electric heater including the above-described oscillating mechanism.

[0034] The aforementioned oscillating mechanism and electric heater, by setting an annular friction component, make the oscillation of the bracket stable and reliable, and eliminate components such as ball bearing structures, which greatly reduces the number of parts, thus shortening the assembly time, improving the disassembly and assembly efficiency, and reducing the overall cost of the machine. Attached Figure Description

[0035] Figure 1 This is an exploded structural diagram of the head-shaking mechanism in one embodiment of the present invention;

[0036] Figure 2 for Figure 1 A top view of the oscillating mechanism shown.

[0037] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure of the oscillating mechanism shown;

[0038] Figure 4 for Figure 2 A schematic diagram of the BB cross-sectional structure of the oscillating mechanism shown;

[0039] Figure 5 for Figure 1 A schematic diagram of the tilting mechanism from below;

[0040] Figure 6 for Figure 1 A schematic diagram of the bearing structure of the oscillating mechanism shown;

[0041] Figure 7 for Figure 6 A schematic diagram of the bearing of the oscillating mechanism from another perspective;

[0042] Figure 8 for Figure 1 A schematic diagram of the support structure for the oscillating mechanism is shown.

[0043] Figure 9 for Figure 8 A schematic diagram of the support frame for the oscillating mechanism shown from another perspective;

[0044] Figure 10 for Figure 1 A schematic diagram of the rotating disk of the oscillating mechanism shown;

[0045] Figure 11 for Figure 10 A schematic diagram of the rotating disk of the oscillating mechanism from another perspective. Detailed Implementation

[0046] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0053] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0054] Figure 1 An exploded view of the head-shaking mechanism in one embodiment of the present invention is shown. Figure 2 for Figure 1 A top view of the oscillating mechanism shown. Figure 3 for Figure 2 The diagram shows a cross-sectional view of the oscillating mechanism. For ease of description, the accompanying drawings only show the structure relevant to the embodiments of the present invention.

[0055] See Figure 1 and Figure 3 One embodiment of the present invention provides a swaying mechanism 100, including a turntable assembly 10, a bracket 20 and a drive assembly 30.

[0056] The turntable assembly 10 includes a turntable 11 and an annular friction element 12 fixed on the turntable 11. The bracket 20 is rotatable relative to the turntable 11. The drive assembly 30 is mounted on the bracket 20 and has an output end, which is fixedly connected to the turntable assembly 10. Specifically, the turntable 11 is located at the bottom of the oscillation mechanism 100, and the turntable 11 can support the entire oscillation mechanism 100 and support multiple components on the electric heater.

[0057] The annular friction element 12 is located between the turntable 11 and the bracket 20. The side of the annular friction element 12 facing away from the turntable 11 is used to support the bracket 20. The drive assembly 30 is used to provide the driving force to make the bracket 20 rotate relative to the turntable 11.

[0058] It should be understood that when the output end of the drive component 30 outputs driving force, since the output end is fixedly connected to the turntable component 10 and the turntable 11 is stationary, the driving force acting on the turntable 11 will react on the bracket 20 on which the drive component 30 is mounted. The bracket 20 is rotatable relative to the turntable 11. Therefore, the drive component 30 will drive the bracket 20 to rotate relative to the turntable 11, so as to realize the head-shaking action of the bracket 20.

[0059] The swaying mechanism 100 of the present invention, by setting an annular friction element 12, makes the swaying of the bracket 20 stable and reliable, and eliminates components such as ball bearing structure, which greatly reduces the number of parts, thus shortening the assembly time, improving the disassembly and assembly efficiency, and reducing the overall cost of the machine.

[0060] In some embodiments, the annular friction element 12 and the support 20 are in line contact, surface contact, or point contact. The ratio of the outer diameter of the annular friction element 12 to that of the turntable 11 is R, and 0.3 < R < 0.6. Specifically, the side of the annular friction element 12 facing the support 20 is arc-shaped to achieve line contact between the annular friction element 12 and the support 20; the side of the annular friction element 12 facing the support 20 is an annular surface to achieve surface contact between the annular friction element 12 and the support 20; and the side of the annular friction element 12 facing the support 20 has conical tips spaced apart circumferentially to achieve point contact between the annular friction element 12 and the support 20. By setting the ratio of the outer diameter of the annular friction element 12 to that of the turntable 11 to R, and 0.3 < R < 0.6, the rotation between the support 20 and the turntable assembly 10 can be made more stable, and the arrangement of the annular friction element 12 will not cause positional interference with the subsequent guide post 24 and friction plate 40.

[0061] In some embodiments, the turntable assembly 100 further includes a rotating shaft 13, one end of which is fixed to the turntable assembly 10. A support 20 rotates relative to the turntable 11 about the rotating shaft 13, and an annular friction element 12 is arranged around the rotating shaft 13. By arranging the annular friction element 12 around the rotating shaft 13, the force on the support 20 relative to the annular friction element 12 can be made more uniform, and the overall rotation of the support 20 is smoother. Preferably, the center of the rotating shaft 13 coincides with the center of the annular friction element 12.

[0062] like Figure 6 As shown, the annular friction element 12 is further fixedly connected to the rotating shaft 13. This simplifies the structure of the annular friction element 12 and the rotating shaft 13 fixed to the turntable 11, making the structure of the annular friction element 12 and the rotating shaft 13 more compact.

[0063] Furthermore, the turntable assembly 100 also includes a bushing 14, which is disc-shaped. The rotating shaft 13 and the annular friction element 12 are both fixed to the bushing 14, which is fixed to the turntable 11. The disc-shaped bushing 14, and its fixation to the turntable 11, makes the fixation of the rotating shaft 13 and the annular friction element 12 relative to the turntable 11 more stable and reliable. Specifically, the center of the rotating shaft 13 coincides with the center of the bushing 14, and the annular friction element 12 is fixed circumferentially to the edge of the bushing 14. This makes the overall structure of the annular friction element 12, the rotating shaft 13, and the bushing 14 more compact. It should be understood that, since the bushing 14 is disc-shaped, when the annular friction element 12 is fixed to the bushing 14, in order to maintain contact between its side facing away from the turntable 11 and the bracket 20, the annular friction element 12 should protrude from the side of the bushing 14 facing away from the turntable 11.

[0064] Preferably, the annular friction element 12, the rotating shaft 13, and the bushing 14 are integrally formed. This results in better structural strength and stability for the annular friction element 12, the rotating shaft 13, and the bushing 14.

[0065] like Figure 4 As shown, in some embodiments, the output end of the drive assembly 30 is fixed to the annular friction member 12 via a bushing 14. Further, the output end of the drive assembly 30 is fixed between the annular friction member 12 and the rotating shaft 13.

[0066] like Figure 6 As shown, specifically, the bushing 14 has a fixing boss 141 on the side facing the bracket 20, and the output end of the drive assembly 30 is fixed to the bushing 14 through the fixing boss 141.

[0067] Please refer again to convex 2. In some embodiments, the bracket 20 also has a second through hole 21, through which the output end of the drive assembly 30 is fixed to the bushing 14. Specifically, the fixing boss 141 passes through the second through hole 21 to be fixedly connected to the output end of the drive assembly 30. It should be noted that when the drive assembly 30 drives the bracket 20 to rotate relative to the turntable 11, in order not to affect the fixed connection between the output end of the drive assembly 30 and the annular friction member 12, i.e., the bushing 14, the fixing boss 141 should slide in the second through hole 21 in the direction of rotation of the bracket 20 relative to the turntable 11. Specifically, the second through hole 21 is an arc-shaped hole.

[0068] In some embodiments, when the bracket 20 rotates relative to the turntable 11, the bracket 20 remains in contact with the annular friction member 12. In this way, the annular friction member 12 can always provide reliable support for the bracket 20.

[0069] In some embodiments, the bushing 14 has multiple supporting ribs 142 on the side facing the turntable 11, and the supporting ribs 142 support the turntable 11. More specifically, the supporting ribs 142 are arranged in multiple rings on the side of the bushing 14 facing the turntable 11, or the supporting ribs 142 are arranged radially from the center of the bushing 14 on the side of the bushing 14 facing the turntable 11, or the supporting ribs 142 are arranged in multiple rings on the side of the bushing 14 facing the turntable 11, and the supporting ribs 142 are arranged radially from the center of the bushing 14 on the side of the bushing 14 facing the turntable 11. The above arrangement is not limited here. By setting the supporting ribs 142, the bushing 14 is stably supported on the turntable 11, so that the annular friction member 12 can reliably maintain contact with the bracket 20.

[0070] In some embodiments, the turntable assembly 10 further includes a first positioning member disposed on the side of the bushing 14 facing the turntable 11, and the turntable 11 includes a second positioning member adapted to the first positioning member so that the bushing 14 is positioned on the turntable 11.

[0071] Specifically, the first positioning element includes a positioning post 143, and the second positioning element includes a positioning groove adapted to the positioning post 143, or the first positioning element includes a positioning groove, and the second positioning element includes a positioning post adapted to the positioning groove.

[0072] Specifically, the first positioning element includes a foolproof boss 144, and the second positioning element includes a foolproof groove adapted to the foolproof boss 144, or the first positioning element includes a foolproof groove, and the second positioning element includes a foolproof boss adapted to the foolproof groove.

[0073] Thus, by setting the first positioning part, the bushing 14 can be positioned relative to the turntable 11, and the positioning is reliable.

[0074] In some embodiments, the turntable assembly 10 further includes a first connector, through which the bushing 14 is connected to the turntable 11.

[0075] Specifically, the first connector includes a screw, and the turntable assembly 10 also includes a screw post 145. The screw post 145 is disposed on the side of the bushing 14 facing the turntable 11. The turntable 11 has a screw through hole corresponding to the screw post 145, and the screw passes through the screw through hole and connects to the screw post 145.

[0076] Thus, after the bushing 14 is successfully positioned relative to the turntable 11, the first connector can be used to connect the bushing 14 to the turntable 11, ensuring that the connection process is fast and reliable.

[0077] In some embodiments, the annular friction element 12 is made of a wear-resistant material, while at least one of the turntable 11 and the bracket 20 is made of a non-wear-resistant material. Thus, since the annular friction element 12 is made of a wear-resistant material, its service life and the overall working stability of the oscillating mechanism 100 can be improved. Conversely, if the turntable 11 or the bracket 20 is made of a non-wear-resistant material, structural stability can be improved and costs reduced.

[0078] Specifically, at least one of the turntable 11 and the bracket 20 is made of ABS material, which has the advantages of good performance, small deformation and stable production dimensions.

[0079] Specifically, the annular friction element 12 is made of POM material. POM material is easily deformable and has good self-lubricating properties, which can prevent abnormal noise during the rotation of the bracket 20. In other embodiments, the bushing 14 or the shaft 13 may also be made of POM material.

[0080] like Figure 8 As shown, in some embodiments, the bracket 20 has a shaft hole 22, one end of the rotating shaft 13 passes through the shaft hole 22, and a gap is formed between the rotating shaft 13 and the shaft hole 22 along the radial direction of the rotating shaft 13. In this way, the bracket 20 can be prevented from eccentric movement. Preferably, the gap between the rotating shaft 13 and the shaft hole 22 along the radial direction of the rotating shaft 13 is in the range of 0.02 mm to 0.2 mm.

[0081] like Figure 9 As shown, in some embodiments, the support 20 has a first groove 23 on the side surface facing the turntable 11, and the annular friction member 12 is in contact with the bottom wall of the first groove 23 on the side facing away from the turntable 11. A gap is formed between the outer side wall of the annular friction member 12 along its circumference and the side wall of the first groove 23. By providing the first groove 23, a certain amount of space for movement, assembly, or deformation of the annular friction member 12 can be provided, while also limiting excessive movement of the annular friction member 12, which would cause it to misalign and fail to cooperate properly with the support 20.

[0082] like Figure 10 and Figure 11 As shown, in some embodiments, the surface of the turntable 11 facing the support 20 is provided with a second groove 112, and the side of the bushing 14 facing the turntable 11 contacts the bottom wall of the second groove 112, and a gap is formed between the bushing 14 and the second groove 112 along its circumferential outer wall. By providing the second groove 23, the bushing 14 can be provided with space for movement, assembly or deformation, while also limiting excessive movement of the bushing 14, which would cause it to misalign and fail to cooperate properly with the turntable 11 and the support 20.

[0083] Please refer to it again. Figure 1In some embodiments, the drive assembly 30 includes a motor 31, a crank 32, and a connecting rod 33. The motor 31 is fixedly connected to the bracket 20 and has a motor shaft. The motor shaft is connected to one end of the connecting rod 33 via the crank 32, and the other end of the connecting rod 33 is fixedly connected to the turntable assembly 10. Specifically, the other end of the connecting rod 33 is fixed to the bushing 14. The manner in which the motor 31 drives the crank 32 and the connecting rod 33 is well known to those skilled in the art and will not be described in detail here.

[0084] Please refer to it again. Figure 3 Specifically, the motor shaft is arranged parallel to the axial direction of the turntable 11, and the crank 32 and connecting rod 33 are arranged parallel to the radial direction of the turntable 11. The bracket 20 has a receiving cavity, and an opening communicating with the receiving cavity is opened on the side of the bracket 20 away from the turntable 11. The crank 32 and connecting rod 33 are located inside the receiving cavity, and the motor 31 is fixed to the outside of the receiving cavity. The motor shaft of the motor 31 extends into the receiving cavity and connects with the crank 32.

[0085] Please refer to it again. Figure 9 and Figure 10 In some embodiments, the support 20 has a guide post 24 on the side facing the turntable 11, and the turntable 11 has a first through hole 111. The guide post 24 can slide within the first through hole 111 in the direction of rotation of the support 20 relative to the turntable 11. By providing the guide post 24, the rotation of the support 20 relative to the turntable 11 can be made more stable and reliable. Specifically, there are two guide posts 24 arranged opposite each other, and there are two first through holes 111 arranged opposite each other. Each guide post 24 cooperates with a corresponding first through hole 111.

[0086] like Figure 4 and Figure 5 As shown, the oscillating mechanism 100 further includes a friction plate 40. The friction plate 40 is mounted on the side of the turntable 11 away from the support 20 via a guide post 24, and a gap is formed between the friction plate 40 and the turntable 11 along the axial direction of the turntable 11. The radial dimension of the first through hole 111 along the turntable 11 is smaller than the radial dimension of the friction plate 40 along the turntable 11. Thus, during the rotation of the support 20, the friction plate 40 can provide support for the support 20 when it rotates and wobbles, making the support 20 rotate smoothly. Specifically, the gap between the friction plate 40 and the turntable 11 is in the range of 0.05 mm to 0.5 mm. Specifically, the end of the guide post 24 away from the support 20 is provided with a stepped portion, and the friction plate 40 is sleeved on the end of the guide post 24 away from the support 20, and abuts against the stepped portion to form an axial limit.

[0087] Based on the same inventive concept, the present invention also provides an electric heater, including the aforementioned oscillating mechanism 100. Specifically, the electric heater can be an electric heater or a fan, etc., and is not limited thereto.

[0088] The oscillating mechanism 100 and the electric heater provided in this embodiment of the invention have the following beneficial effects:

[0089] By setting the annular friction element 12, the swaying of the bracket 20 is made stable and reliable, and components such as the ball bearing structure are eliminated, which greatly reduces the number of parts, thus shortening the assembly time, improving the disassembly and assembly efficiency, and reducing the overall cost of the machine.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A swaying mechanism (100), characterized in that, include: A turntable assembly (10) includes a turntable (11), an annular friction element (12), a rotating shaft (13), and a bushing (14); the annular friction element (12) is arranged around the rotating shaft (13); the bushing (14) is disc-shaped, and the rotating shaft (13) and the annular friction element (12) are both fixed to the bushing (14) to form a whole independent of the turntable (11), and the bushing (14) is fixed to the turntable (11); the ratio of the outer diameter of the annular friction element (12) to that of the turntable (11) is R, and 0.3 < R < 0.6; A bracket (20) is rotatable relative to the turntable (11) about the pivot (13), and a receiving space is formed on the side of the bracket (20) facing away from the turntable assembly (10); and The drive assembly (30) includes a motor (31), a crank (32), and a connecting rod (33). The motor (31) is fixedly connected to the bracket (20). The motor (31) has a motor shaft, which is connected to one end of the connecting rod (33) via the crank (32). The other end of the connecting rod (33) is fixedly connected to the turntable assembly (10). The crank (32) and the connecting rod (33) are both accommodated within the accommodating space. The annular friction element is located between the turntable (11) and the bracket (20), and the side of the annular friction element (12) facing away from the turntable (11) is used to support the bracket (20). The drive assembly (30) is used to provide a driving force that causes the support (20) to rotate relative to the turntable (11).

2. The oscillating mechanism (100) according to claim 1, characterized in that, The annular friction element (12) and the bracket (20) are in line contact, surface contact, or point contact.

3. The swaying mechanism (100) according to claim 1, characterized in that, When the bracket (20) rotates relative to the turntable (11), the bracket (20) remains in contact with the annular friction member (12).

4. The oscillating mechanism (100) according to claim 1, characterized in that, The turntable assembly (10) further includes a first positioning member disposed on the side of the bushing (14) facing the turntable (11). The turntable (11) includes a second positioning member adapted to the first positioning member so that the bushing (14) is positioned on the turntable (11).

5. The swaying mechanism (100) according to claim 4, characterized in that, The first positioning element includes a foolproof boss (144), and the second positioning element includes a foolproof groove adapted to the foolproof boss (144); or The first positioning element includes a foolproof groove, and the second positioning element includes a foolproof boss that is adapted to the foolproof groove.

6. The swaying mechanism (100) according to claim 4, characterized in that, The first positioning element includes a positioning post (143), and the second positioning element includes a positioning groove adapted to the positioning post (143); or The first positioning element includes a positioning groove, and the second positioning element includes a positioning post adapted to the positioning groove.

7. The swaying mechanism (100) according to claim 1, characterized in that, The turntable assembly (10) further includes a first connector, and the bushing (14) is connected to the turntable (11) through the first connector.

8. The swaying mechanism (100) according to claim 7, characterized in that, The first connector includes a screw, and the turntable assembly (10) further includes a screw post (145). The screw post (145) is disposed on the side of the bushing (14) facing the turntable (11). The turntable (11) has a screw through hole corresponding to the screw post (145). The screw passes through the screw through hole and is connected to the screw post (145).

9. The swaying mechanism (100) according to claim 1, characterized in that, The annular friction element (12), the rotating shaft (13), and the bushing (14) are integrally formed.

10. The swaying mechanism (100) according to claim 1, characterized in that, The bracket (20) has a shaft hole (22), one end of the rotating shaft (50) passes through the shaft hole (22), and a gap is formed between the rotating shaft (50) and the shaft hole (22) along the radial direction of the shaft (50).

11. The swaying mechanism (100) according to claim 1, characterized in that, The material of the annular friction element is a wear-resistant material, and the material of at least one of the turntable and the bracket is a non-wear-resistant material.

12. The swaying mechanism (100) according to claim 1, characterized in that, The bracket (20) has a first groove (23) on one side of its surface facing the turntable (11). The annular friction member (12) is in contact with the bottom wall of the first groove (23) on the side away from the turntable (11). A gap is formed between the outer side wall of the annular friction member (12) and the side wall of the first groove (23) along its circumferential direction.

13. The swaying mechanism (100) according to claim 1, characterized in that, The bracket (20) is provided with a guide post (24) on the side facing the turntable (11), and the turntable (11) is provided with a first through hole (111); The guide post (24) can be slidably disposed in the first through hole (111) in the direction of rotation of the bracket (20) relative to the turntable (11).

14. The swaying mechanism (100) according to claim 13, characterized in that, The swaying mechanism (100) further includes a friction plate (40), which is mounted on the side of the turntable (11) away from the bracket (20) via the guide post (24), and the friction plate (40) forms a gap with the turntable (11) along the axial direction of the turntable (11); The radial dimension of the first through hole (111) along the turntable (11) is smaller than the radial dimension of the friction plate (40) along the turntable (11).

15. An electric heater, characterized in that, Includes the head-shaking mechanism (100) as described in any one of claims 1 to 14.

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