Fan head assembly and circulating fan

Abstract

The application relates to a fan head assembly and a circulating fan, and relates to the fan technology field. The fan head assembly comprises a machine head, an adapter and a driving mechanism. The machine head comprises a machine head and a driving mechanism, and the driving mechanism comprises a motor, a driving gear, a first transmission gear, a second transmission gear and a flexible gear sleeve. One output shaft of the motor is connected with the driving gear, the flexible gear sleeve is sleeved on the circumferential side of the second transmission gear, the driving gear is in mesh with the flexible gear sleeve and the second transmission gear at the same time, the first transmission gear is in transmission cooperation with the machine head, and the second transmission gear can be controlled to be in mesh with the first transmission gear. The application can effectively buffer the contact vibration between the rigid teeth, and reduce the impact noise of gear operation.

Description

Technical Field

[0001] This application relates to the field of fan technology, and in particular to a fan head assembly and a circulating fan. Background Technology

[0002] A circulating fan is a specially designed electric fan primarily used to promote indoor air circulation. It works by drawing in and accelerating air through the fan blades, creating a concentrated and powerful spiral wind that effectively stirs the indoor air, lowers the temperature, and improves airflow.

[0003] In related technologies, the up-and-down and left-and-right oscillation functions of circulating fans can easily generate impact noise at the gear meshing points of traditional systems during the adjustment process. Utility Model Content

[0004] Therefore, it is necessary to provide a fan head assembly and a circulating fan to address the problem of impact noise easily generated at the gear meshing point.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a fan head assembly, the fan head assembly comprising:

[0007] Machine head;

[0008] The drive mechanism includes a motor, a drive gear, a first transmission gear, a second transmission gear, and a flexible gear sleeve;

[0009] One output shaft of the motor is connected to the drive gear. The flexible tooth sleeve is fitted around the periphery of the second transmission tooth. The drive gear meshes with both the flexible tooth sleeve and the second transmission tooth. The first transmission tooth engages with the machine head for transmission. The second transmission tooth can be controlled to mesh with the first transmission tooth.

[0010] In one embodiment of the first aspect, the flexible gear sleeve and the second transmission gear are integrally injection molded.

[0011] In one embodiment of the first aspect, the head includes a body and an arc-shaped rack, the arc-shaped rack being disposed on the side of the body facing away from the air outlet and meshing with the first transmission gear.

[0012] In one embodiment of the first aspect, the first transmission gear includes a first bevel gear and two first spur gears, the two first spur gears being coaxially arranged with the first bevel gear and located on opposite sides of the first bevel gear, and each of the first spur gears meshing with the arc-shaped rack.

[0013] In one embodiment of the first aspect, the second transmission gear further includes a second bevel gear and a second spur gear. The second bevel gear is controllably capable of meshing or disengaging with the first transmission gear. The second spur gear is coaxially arranged with the second bevel gear and fixed on the side of the second bevel gear away from the machine head. The flexible gear sleeve is sleeved on the outside of the second spur gear. The driving gear meshes with both the flexible gear sleeve and the second spur gear.

[0014] In one embodiment of the first aspect, the second spur gear is provided with a groove, and the flexible sleeve is disposed in the groove.

[0015] In one embodiment of the first aspect, the projection of the flexible sleeve along a direction perpendicular to the central axis of the drive gear at least partially overlaps with the projection of the drive gear along a direction perpendicular to the central axis of the drive gear.

[0016] In one embodiment of the first aspect, the groove is disposed in the middle of the second spur gear, the second spur gear is distributed on both the upper and lower sides of the flexible gear sleeve, the upper and lower sides of the drive gear mesh with the second spur gear, and the middle side meshes with the flexible gear sleeve.

[0017] In one embodiment of the first aspect, the fan head assembly further includes an adapter, the adapter including a housing and a rotating base, the fan head being mounted on the housing and rotatable relative to the housing under the drive of the first transmission gear, the rotating base being fixed inside the housing;

[0018] The motor is fixedly connected to the rotating base and has two output shafts arranged opposite to each other. One output shaft is connected to the drive gear, and the other output shaft passes through the rotating base.

[0019] In one embodiment of the first aspect, the fan head assembly further includes a button that slides through one end of the housing near the main body and is capable of controlling the engagement or disengagement of the second transmission tooth with the first transmission tooth.

[0020] In one embodiment of the first aspect, the adapter further includes a roller bracket and an outer roller, the roller bracket being detachably mounted to one end of the housing, and the outer roller being rotatably mounted on the roller bracket;

[0021] The head unit includes a main body and an arc-shaped rack. The arc-shaped rack is located on the side of the main body facing away from the air outlet and meshes with the first transmission gear. A groove is provided in the middle of the arc-shaped rack. The roller bracket is installed in the groove on the side away from the housing. The outer roller passes through the groove and abuts against the main body.

[0022] In one embodiment of the first aspect, the adapter further includes a roller bracket and an inner roller, the head includes a main body and an arc-shaped rack, the arc-shaped rack is disposed on the side of the main body facing away from the air outlet side, the arc-shaped rack meshes with the first transmission gear, the arc-shaped rack has a sliding groove, the inner roller is installed on the outside of the roller bracket and abuts against the inner wall of the sliding groove.

[0023] In one embodiment of the first aspect, the rotating seat has a first mounting hole, an elastic element is provided in the first mounting hole, the second transmission gear has a mounting shaft, the mounting shaft passes through the first mounting hole, and the two ends of the elastic element are respectively connected to the rotating seat and the mounting shaft.

[0024] Secondly, embodiments of this application also provide a circulating fan, including the fan head assembly and support assembly described in any of the above embodiments. The support assembly includes a support rod and a connecting seat. The connecting seat is fixed to one end of the support rod and rotatably engages with the rotating seat of the fan head assembly.

[0025] Compared to related technologies, the beneficial effects of this application are as follows: This application provides a fan head assembly and a circulating fan. The fan head assembly includes a fan head and a drive mechanism. The drive mechanism includes a motor, a drive gear, a first transmission gear, a second transmission gear, and a flexible gear sleeve. The flexible gear sleeve is fitted around the periphery of the second transmission gear so that it contacts the drive gear first when the drive gear meshes with the second transmission gear. In this way, when the working angle of the fan head is adjusted by the drive mechanism, the first transmission gear is controlled to mesh with the second transmission gear, and the drive gear drives the second transmission gear to rotate. The teeth in the drive gear will first contact the teeth in the flexible gear sleeve. Only after the teeth in the flexible gear sleeve are compressed to a certain extent will the drive gear mesh with the teeth in the second transmission gear. Thus, the flexible gear effectively buffers the contact vibration between the rigid teeth, reducing the impact noise of gear operation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the fan head assembly in some embodiments of this application;

[0028] Figure 2 The following are schematic diagrams of the motor structure in some embodiments of this application;

[0029] Figure 3 This is a schematic diagram of the structure of the first transmission tooth in some embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the structure of the second transmission tooth in some embodiments of this application;

[0031] Figure 5 The diagram shows the structure of the drive gear in some embodiments of this application;

[0032] Figure 6 for Figure 5 A magnified structural diagram of part A in the diagram;

[0033] Figure 7 This is a schematic diagram of the arc-shaped rack in some embodiments of this application;

[0034] Figure 8 This is a schematic cross-sectional view of the fan head assembly in some embodiments of this application. Figure 1 ;

[0035] Figure 9 This is a schematic diagram of the structure of the inner roller and the outer roller in some embodiments of this application;

[0036] Figure 10 This is a schematic diagram of the roller bracket structure in some embodiments of this application;

[0037] Figure 11 This is a schematic diagram of the button structure in some embodiments of this application;

[0038] Figure 12 This is a schematic cross-sectional view of the fan head assembly in some embodiments of this application. Figure 2 ;

[0039] Figure 13 This is a schematic diagram of the circulating fan structure in some embodiments of this application;

[0040] Figure 14 This is a schematic diagram of the structure of the rotary seat in some embodiments of this application;

[0041] Figure 15 This is a schematic diagram of the structure of the connector in some embodiments of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1000, circulating fan;

[0044] 100. Fan head assembly; 110. Fan head; 111. Main body; 112. Arc-shaped rack; 1121. Slide groove; 120. Adapter; 121. Housing; 122. Rotating seat; 1221. First connecting post; 123. Roller bracket; 1231. First roller groove; 1232. Second roller groove; 1233. First shaft hole; 1234. Second shaft hole; 124. Outer roller; 125. Inner roller; 130. Drive Mechanism; 131, Motor; 1311, Output Shaft; 132, First Transmission Gear; 1321, First Bevel Gear; 1322, First Spur Gear; 133, Second Transmission Gear; 1331, Second Bevel Gear; 1332, Second Spur Gear; 1333, Mounting Shaft; 134, Drive Gear; 135, Flexible Gear Sleeve; 136, Elastic Component; 140, Button; 141, Cap; 142, Column; 143, Press Plate;

[0045] 200, Support component; 210, Connecting seat; 211, Second connecting column; 212, Rotating groove; 213, Flat groove. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0048] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms 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. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" 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. Similarly, "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.

[0051] It should be noted that if 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. If 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. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0052] In related technologies, the vertical and horizontal oscillation functions of circulating fans require separate control by two motors. This results in a large number of motors, high costs, low assembly efficiency, and no cost competitiveness. Furthermore, the placement of the two motors increases the space required for the entire unit, leading to a bulky design. The large number of motors also results in high overall power consumption, reduced energy efficiency, and ineffective energy saving. Additionally, the numerous gears place a heavy load on the motors during operation, potentially causing impact noise at the gear meshing points when the product oscillates and reverses direction.

[0053] See Figure 1 As shown, to improve the above-mentioned problems, embodiments of this application provide a fan head assembly 100 to achieve up-down and left-right oscillation of the fan head 110 via a single motor 131. The fan head assembly 100 includes a fan head 110, an adapter 120, and a drive mechanism 130. The fan head 110 and the adapter 120 are slidably coupled to oscillate up-down under the action of the drive mechanism 130. The drive mechanism 130 provides a power source so that, after the fan head assembly 100 is connected to the support assembly 200, it can simultaneously drive the fan head assembly 100 to oscillate left-right relative to the support assembly 200 and to oscillate up-down relative to the adapter 120.

[0054] Specifically, the head unit 110 includes a main body 111 and an arc-shaped rack 112. The main body 111 houses the fan blades, which generate airflow through rotation. One side of the main body is the outlet side of the grille cover. The arc-shaped rack 112 is located on the side of the main body 111 facing away from the outlet side, thus preventing interference with the outlet side when the main body 111 is installed on the adapter 120. Furthermore, the arc-shaped rack 112 ensures that although the adapter 120 slides with the main body 111, its sliding path is arc-shaped, allowing the main body 111 to oscillate and sweep air in the vertical direction.

[0055] The adapter 120 includes a housing 121 and a rotating base 122. The housing 121 has a mounting cavity, the top surface of which is slidably connected to the main body 111 for mounting the fan head 110. The rotating base 122 is fixed inside the housing 121 and is rotatably connected to the support assembly 200 so that, under the action of the drive mechanism 130, it drives the entire fan head assembly 100 to rotate relative to the support assembly 200.

[0056] Continue reading Figure 2As shown, the drive mechanism 130 is installed inside the housing 121, and the drive mechanism 130 includes a motor 131, a first transmission gear 132, and a second transmission gear 133. The motor 131 is fixedly connected to the rotating base 122 and has two output shafts 1311 arranged opposite each other. One output shaft 1311 is connected to the second transmission gear 133, and the other output shaft 1311 passes through the rotating base 122 and is connected to the support assembly 200. The first transmission gear 132 is installed at the end of the housing 121 connected to the machine head 110 and meshes with the arc-shaped rack 112. The second transmission gear 133 can be controlled to mesh with the first transmission gear 132.

[0057] Thus, during the operation of motor 131, the motor body can rotate relative to the output shaft 1311. The lower output shaft 1311 is connected to the support assembly 200 fixed to the ground. After motor 131 is fixed to the rotating base 122, the motor body and the rotating shaft rotate relative to the support assembly 200. Simultaneously, the housing 121 fixed to the rotating shaft rotates synchronously, thereby driving the upper head 110 to oscillate left and right relative to the support assembly 200. In addition, the upper output shaft 1311 drives the second transmission gear 133 and the first transmission gear 132 to rotate, thereby driving the arc rack 112 to rotate through the first transmission gear 132, realizing the up-and-down oscillation of the head 110. In this way, this application can achieve simultaneous up-and-down and left-and-right oscillation with only one motor 131, which is low in cost, high in efficiency, and reduces the number of motors 131, resulting in lower overall power consumption, improved energy efficiency, and effective energy saving.

[0058] Continue reading Figure 3 and Figure 4 As shown, the first transmission gear 132 further includes a first bevel gear 1321 and two first straight gears 1322. The two first straight gears 1322 are coaxially arranged with the first bevel gear 1321 and are located on opposite sides of the first bevel gear 1321. Each first straight gear 1322 meshes with the arc-shaped rack 112. The second transmission gear 133 includes a second bevel gear 1331, which can be controlled to mesh with or disengage from the first bevel gear 1321.

[0059] For example, the first transmission gear 132 is horizontally rotatably mounted on the housing 121, with a portion of the tooth surface of the first spur gear 1322 exposed above the housing 121 to mesh with the arc-shaped rack 112. The second transmission gear 133 is vertically rotatably mounted inside the housing 121, such that the axis of the first bevel gear 1321 intersects the axis of the second bevel gear 1331 at a 90° angle. Thus, when the second bevel gear 1331 rotates under the drive of the motor 131, it meshes with the first bevel gear 1321, causing the second bevel gear 1331 to rotate, thereby changing the direction of rotation. Simultaneously, the two first spur gears 1322 located on both sides of the first bevel gear 1321 rotate accordingly, thereby driving the arc-shaped rack to rotate, realizing the up-and-down oscillation of the fan head 110. By integrating both the first transmission gear 132 and the second transmission gear 133 onto the housing 121, all transmission mechanisms are contained within a single space, making the overall appearance of the circulating fan 1000 less bulky and its structure more streamlined.

[0060] Continue reading Figure 4 and Figure 5 As shown, in some embodiments, the drive mechanism 130 further includes a drive gear 134, which is connected to an output shaft 1311 of the motor 131 away from the rotating base 122. The second transmission gear 133 also includes a second spur gear 1332, which is coaxially arranged with the second bevel gear 1331 and fixed to the side of the second bevel gear 1331 away from the main body 111. The second spur gear 1332 is meshed with the drive gear 134.

[0061] Specifically, the center of the drive gear 134 is directly connected to the output shaft 1311 of the motor 131 located above it, thus rotating when the motor 131 is in operation. The second transmission gear 133 is located on one side of the drive gear 134 and meshes with the drive gear 134 through the second spur gear 1332 to follow the rotation of the drive gear 134. In this way, through the transmission arrangement of the drive gear 134 and the second transmission gear 133, the speed of the gears can be adjusted, ensuring the oscillation rate of the machine head 110.

[0062] Continue reading Figure 6 As shown, the drive mechanism 130 further includes a flexible gear sleeve 135, which is sleeved on the outside of the second spur gear 1332 and meshes with the drive gear 134.

[0063] Specifically, during the reversal of the machine head 110, the motor 131 has a large reversing torque, and the gears have side clearance, resulting in a large side clearance on one side and a small side clearance on the other, which causes gear impact noise during the return operation. Therefore, in this specific embodiment, the flexible gear sleeve 135 and the second spur gear 1332 are integrally injection molded, with the flexible gear sleeve 135 made of a soft material such as rubber. Thus, the teeth in the drive gear 134 first contact the teeth in the flexible gear sleeve 135. After the material thickness of the flexible gear sleeve 135 is compressed to a certain extent, it then meshes with the teeth in the second spur gear 1332, thereby driving the second transmission gear 133. During the reversal of the machine head 110, the drive gear 134 first contacts the flexible gear sleeve 135 for impact buffering before engaging with the second spur gear 1332 for transmission, thereby eliminating the large load on the motor 131 during operation and reducing gear meshing impact noise during the product's swaying and reversing.

[0064] In some embodiments, the second spur gear 1332 is provided with a groove, and the flexible gear sleeve 135 is disposed in the groove.

[0065] Specifically, the flexible gear sleeve 135 is fitted into the groove of the second transmission gear 133. The height of the drive gear 134 is greater than the height of the flexible gear sleeve 135, allowing the drive gear 134 to mesh with both the flexible gear sleeve 135 and the second transmission gear 133 simultaneously. In this way, the flexible gear sleeve 135 buffers the impact from the drive gear 134, reducing gear meshing impact noise during product swaying and reversing.

[0066] For example, the groove can be located at any position on the second spur gear 1332, such as at either end or in the middle. If the groove is located at the upper or lower end of the second spur gear 1332, the flexible gear sleeve 135 will only have the second spur gear 1332 on its lower side. If the groove is located in the middle of the second spur gear 1332, the flexible gear sleeve 135 will have the second spur gear 1332 on both its upper and lower sides. It should be noted that "middle" here refers to any position between the upper and lower ends of the flexible gear sleeve 135.

[0067] Furthermore, the projection of the flexible gear sleeve 135 along the direction perpendicular to the central axis of the drive gear 134 at least partially overlaps with the projection of the drive gear 134 along the direction perpendicular to the central axis of the drive gear 134, so as to satisfy that when the drive gear 134 meshes with the second spur gear 1332, at least some teeth of the drive gear 134 mesh with the flexible gear sleeve 135.

[0068] In one specific embodiment, the groove is disposed in the middle of the second spur gear 1332, and the second spur gear 1332 is distributed on both the upper and lower sides of the flexible gear sleeve 135. The upper and lower sides of the drive gear 134 mesh with the second spur gear 1332, and the middle part meshes with the flexible gear sleeve 135.

[0069] In this way, both the upper and lower sides of the driving gear 134 can mesh with the second spur gear 1332, maintaining the meshing strength between the driving gear 134 and the second spur gear 1332 and preventing the driving gear 134 from slipping during long-term operation, thus avoiding the phenomenon of the driving gear 134 spinning idly. At the same time, by increasing the contact area between the driving gear 134 and the second spur gear 1332, the contact wear of the teeth is reduced to a certain extent.

[0070] In other embodiments, the flexible tooth sleeve 135 is directly sleeved on the outside of the second spur gear 1332, and the height of the driving gear 134 is less than or equal to the height of the flexible tooth sleeve 135. Each tooth of the second spur gear 1332 is sleeved by the flexible tooth sleeve 135, which can also satisfy the requirement that the driving gear 134 meshes with the flexible tooth sleeve 135 and the second spur gear 1332 at the same time.

[0071] In some other embodiments, the flexible gear sleeve 135 and the second transmission gear 133 are integrally injection molded.

[0072] Understandably, by injection molding a softer flexible gear sleeve 135 on the outside of the rigid second spur gear 1332, the assembly strength of the flexible gear sleeve 135 and the second transmission gear 133 can be improved, and the production process of the workpiece can be simplified to a certain extent, reducing product costs.

[0073] Continue reading Figure 7 and Figure 8 As shown, in some embodiments, the adapter 120 further includes a roller bracket 123 and an outer roller 124. The roller bracket 123 is detachably mounted on one end of the housing 121, and the outer roller 124 is rotatably mounted on the roller bracket 123. A groove 1121 is provided in the middle of the arc-shaped rack 112. The side of the roller bracket 123 away from the housing 121 is installed in the groove 1121, and the outer roller 124 passes through the groove 1121 and abuts against the main body 111.

[0074] Specifically, after the arc-shaped rack 112 has a groove 1121 in the middle, teeth are symmetrically provided on both sides of the groove 1121 to mesh with the two first spur gears 1322 respectively. A groove is provided on the top of the housing 121, and the roller bracket 123 is installed in the groove of the housing 121 and fastened with bolts.

[0075] Continue reading Figure 9 and Figure 10As shown, the roller bracket 123 has a first roller groove 1231 on the side opposite to the housing 121, and first shaft holes 1233 are respectively provided on opposite sides of the first roller groove 1231. The outer roller 124 is placed in the first roller groove 1231 and then connected to the first shaft hole 1233 by a pin, so that the outer roller 124 can rotate in place of the roller bracket 123. At the same time, the top surface of the outer roller 124 is exposed in the first roller groove 1231, so that after the roller bracket 123 passes through the groove 1121 of the arc-shaped rack 112, it abuts against the main body 111. In this way, during the up and down rotation of the machine head 110, the outer roller 124 rotates with it, reducing the sliding friction of the machine head 110 and reducing the wear of the machine head 110 during operation.

[0076] Furthermore, the adapter 120 also includes an inner roller 125, which is mounted on the outside of the roller bracket 123 and abuts against the inner wall of the slide groove 1121.

[0077] Specifically, a second roller groove 1232 is provided on the side of the roller bracket 123 away from the housing 121. The second roller groove 1232 is adjacent to the first roller groove 1231, and the width of the second roller groove 1232 is smaller than the width of the first roller groove 1231. Second shaft holes 1234 are respectively provided through the opposite sides of the second roller groove 1232. Two inner rollers 125 are provided, which are arranged opposite each other on the outside of the second roller groove 1232 and then connected to the second shaft holes 1234 by pins, so that the inner rollers 125 can rotate in place of the roller bracket 123. After the roller bracket 123 is inserted into the groove 1121 of the arc-shaped rack 112, the inner rollers 125 provided on the side of the roller bracket 123 are embedded in the groove 1121 of the arc-shaped rack 112 and abut against the groove wall of the groove 1121, further reducing the wear of the machine head 110.

[0078] Continue reading Figure 11 As shown, in some embodiments, the fan head assembly 100 further includes a button 140, which is slidably disposed at one end of the housing 121 near the main body 111 and can controllably drive the second transmission gear 133 to connect with the first transmission gear 132.

[0079] Specifically, the button 140 includes a cap 141, a post 142, and a pressing plate 143. The cap 141 extends through the top of the housing 121 to facilitate user pressing. The post 142 is fixed to the bottom end of the cap 141 and forms a press-type elastic self-locking structure with the rotating base 122, so that the button 140 can be retracted and reset by pressing the cap 141. One end of the pressing plate 143 is vertically fixed to the connection between the cap 141 and the column 142, and the other end is connected to the second transmission gear 133. Thus, by pressing the button 140, the second bevel gear 1331 of the second transmission gear 133 is separated from the first bevel gear 1321 of the first transmission gear 132. In this way, only the machine head 110 can be oscillating, while the first transmission gear 132 cannot follow the movement, and the up and down oscillation of the machine head 110 is paused, realizing various operation adjustments of the machine head 110. When the up and down oscillation is required, simply press the button 140 again to reset, so that the second bevel gear 1331 rises to mesh with the first bevel gear 1321.

[0080] Furthermore, a hole is provided in the middle of the second transmission gear 133, and a mounting pin is provided at the bottom of the pressing plate 143. The mounting pin is inserted into the hole of the second transmission gear 133 to strengthen the connection between the second transmission gear 133 and the button 140 and improve the stability of the synchronous movement of the second transmission gear 133 and the button 140.

[0081] Continue reading Figure 12 As shown, in some embodiments, the rotating seat 122 has a first mounting hole, and an elastic element 136 is provided in the first mounting hole. The second transmission gear 133 is provided with a mounting shaft 1333, which passes through the first mounting hole. The two ends of the elastic element 136 are connected to the rotating seat 122 and the mounting shaft 1333, respectively.

[0082] Specifically, the elastic element 136 is a helical spring. The restoring force of the elastic element 136 can provide support for the second transmission gear 133 and provide a corresponding restoring force when the button 140 is pressed to reset, so as to facilitate the rising and returning of the second transmission gear 133.

[0083] Continue reading Figure 13 As shown, embodiments of this application also provide a circulating fan 1000, including the fan head assembly 100 and support assembly 200 as described in any of the above embodiments. The support assembly 200 includes a support rod and a connecting seat 210, the connecting seat 210 being fixed to one end of the support rod and rotatably engaging with the rotating seat 122.

[0084] Specifically, the bottom end of the support assembly 200 contacts the ground to achieve overall support and fixation of the circulating fan 1000. The top end of the support assembly 200 is rotatably connected to the fan head assembly 100, and the output shaft 1311 of the motor 131 located below is connected to the support assembly 200, so that the fan head assembly 100 can rotate with the motor body relative to the output shaft 1311, that is, relative to the support assembly 200, and the fan head 110 can be swept up, down, left and right by a single motor 131.

[0085] This embodiment includes the fan head assembly 100 of any of the above embodiments, and therefore has all the beneficial effects of the fan head assembly 100 of any of the above embodiments, which will not be described in detail here.

[0086] Continue reading Figure 14 and Figure 15 As shown, in some embodiments, the rotating seat 122 is provided with a first connecting post 1221 on the side away from the main body 111. The first connecting post 1221 has a connecting hole. The connecting seat 210 is provided with a second connecting post 211 and a rotating groove 212 is provided along the periphery of the second connecting post 211. The first connecting post 1221 is rotatably inserted into the rotating groove 212, and the second connecting post 211 is inserted into the connecting hole.

[0087] Specifically, the insertion and engagement of the first connecting post 1221 with the rotating slot 212, and the insertion and engagement of the second connecting post 211 with the connecting hole, doubly strengthen the connection strength between the rotating seat 122 and the connecting seat 210, and maintain the relative rotation capability of the rotating seat 122 and the connecting seat 210. A flat slot 213 is also provided in the middle of the second connecting post 211, so that after the output shaft 1311 below the motor 131 passes through the connecting hole of the first connecting post 1221, it engages with the flat slot 213 of the second connecting post 211, allowing the motor body to rotate relative to the connecting seat 210.

[0088] 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.

[0089] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A fan head assembly, characterized in that, include: Machine head; The drive mechanism includes a motor, a drive gear, a first transmission gear, a second transmission gear, and a flexible gear sleeve; One output shaft of the motor is connected to the drive gear. The flexible tooth sleeve is fitted around the periphery of the second transmission tooth. The drive gear meshes with both the flexible tooth sleeve and the second transmission tooth. The first transmission tooth engages with the machine head for transmission. The second transmission tooth can be controlled to mesh with the first transmission tooth.

2. The fan head assembly according to claim 1, characterized in that, The flexible gear sleeve and the second transmission gear are integrally injection molded.

3. The fan head assembly according to claim 1, characterized in that, The head unit includes a main body and an arc-shaped rack. The arc-shaped rack is located on the side of the main body facing away from the air outlet and meshes with the first transmission gear.

4. The fan head assembly according to claim 3, characterized in that, The first transmission gear includes a first bevel gear and two first spur gears. The two first spur gears are coaxially arranged with the first bevel gear and are located on two opposite sides of the first bevel gear. Each first spur gear meshes with the arc-shaped rack.

5. The fan head assembly according to claim 1, characterized in that, The second transmission gear also includes a second bevel gear and a second spur gear. The second bevel gear can be controlled to mesh or disengage with the first transmission gear. The second spur gear is coaxially arranged with the second bevel gear and fixed on the side of the second bevel gear away from the machine head. The flexible gear sleeve is sleeved on the outside of the second spur gear. The driving gear meshes with both the flexible gear sleeve and the second spur gear.

6. The fan head assembly according to claim 5, characterized in that, The second spur gear has a groove, and the flexible gear sleeve is disposed in the groove.

7. The fan head assembly according to claim 6, characterized in that, The projection of the flexible gear sleeve along the direction perpendicular to the central axis of the driving gear at least partially overlaps with the projection of the driving gear along the direction perpendicular to the central axis of the driving gear.

8. The fan head assembly according to claim 7, characterized in that, The groove is located in the middle of the second spur gear. The second spur gear is distributed on both the upper and lower sides of the flexible gear sleeve. The upper and lower sides of the drive gear mesh with the second spur gear, and the middle side meshes with the flexible gear sleeve.

9. The fan head assembly according to claim 1, characterized in that, The fan head assembly also includes an adapter, which includes a housing and a rotating base. The fan head is mounted on the housing and can rotate relative to the housing under the drive of the first transmission gear. The rotating base is fixed inside the housing. The motor is fixedly connected to the rotating base and has two output shafts arranged opposite to each other. One output shaft is connected to the drive gear, and the other output shaft passes through the rotating base.

10. The fan head assembly according to claim 9, characterized in that, The fan head assembly also includes a button that slides through the housing at one end near the head and can controllably drive the second transmission gear to engage or disengage with the first transmission gear.

11. The fan head assembly according to claim 9, characterized in that, The adapter also includes a roller bracket and an outer roller. The roller bracket is detachably mounted on one end of the housing, and the outer roller is rotatably mounted on the roller bracket. The head unit includes a main body and an arc-shaped rack. The arc-shaped rack is located on the side of the main body facing away from the air outlet and meshes with the first transmission gear. The arc-shaped rack has a sliding groove, and the roller bracket is installed in the sliding groove on the side away from the housing. The outer roller passes through the sliding groove and abuts against the main body.

12. The fan head assembly according to claim 9, characterized in that, The adapter also includes a roller bracket and an inner roller. The head includes a main body and an arc-shaped rack. The arc-shaped rack is located on the side of the main body facing away from the air outlet. The arc-shaped rack meshes with the first transmission gear. The arc-shaped rack has a sliding groove. The inner roller is installed on the outside of the roller bracket and abuts against the inner wall of the sliding groove.

13. The fan head assembly according to claim 9, characterized in that, The rotating seat has a first mounting hole, and an elastic element is provided in the first mounting hole. The second transmission gear has a mounting shaft, which passes through the first mounting hole. The two ends of the elastic element are respectively connected to the rotating seat and the mounting shaft.

14. A circulating fan, characterized in that, The device includes a fan head assembly and a support assembly as described in any one of claims 1 to 13, wherein the support assembly includes a support rod and a connecting seat, the connecting seat being fixed to one end of the support rod and rotatably engaging with the rotating seat of the fan head assembly.

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