Machine head assembly and air supply device

Abstract

The invention relates to a machine head assembly and an air supply device, and relates to the technical field of air supply. The machine head assembly comprises a supporting part and a working part, the supporting part comprises a supporting frame, the supporting frame comprises a datum plane, and the datum plane is provided with a circle center A and an axis L1 penetrating through the circle center A; the working part comprises a shell, the shell is movably connected with the supporting frame and provided with an axis L2, the axis L2 and the axis L1 intersect at a point o, the point o and the circle center A do not coincide, and the working part can be controlled to do conical rotation along the axis L1 with the point o as the vertex and the axis L2 as the generatrix. The stability of the gravity center of the machine head assembly can be guaranteed, generation of alternating stress is effectively reduced, and the service life of the whole machine is prolonged.

Description

Technical Field

[0001] The present application relates to the field of air supply technology, and in particular to a head assembly and an air supply device. Background Art

[0002] As a common household appliance, circulation fans are widely used in homes, offices and public places to improve indoor air circulation and comfort. However, in the process of existing circulation fans shaking their heads, the change in the center of gravity of the head will cause alternating stress. The long-term effect of alternating stress will cause fatigue of the material of the shaking head parts, thereby reducing the reliability and service life of the parts. Summary of the invention

[0003] Based on this, it is necessary to provide a head assembly and an air supply device to address the problem of changes in the center of gravity position of the circulating fan head.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a head assembly, comprising:

[0006] A support portion, comprising a support frame, wherein the support frame comprises a reference surface, wherein the reference surface is provided with a center A and an axis L1 passing through the center A;

[0007] The working part includes a shell, which is movably connected to the support frame and is provided with an axis L2, the axis L2 intersects with the axis L1 at point o, the point o does not coincide with the center A of the circle, and the working part can be controlled to make a conical rotation along the axis L1 with the point o as the vertex and the axis L2 as the generatrix.

[0008] Through the above design, the center of gravity of the working unit always falls on the point o during the shaking process, which improves the problem of center of gravity change in related technologies, thereby reducing the alternating stress during the operation process, improving the reliability and service life of the working unit, thereby reducing maintenance costs and improving user experience.

[0009] In one embodiment of the first aspect, an included angle between the axis L2 and the axis L1 is θ, and satisfies: 10°≤θ≤30°.

[0010] Through the above design, the rotation range of the working unit is limited to ensure the stability of the center of gravity of the working unit, avoid the problem of unstable center of gravity due to excessive angle, and reduce the operating loss of the working unit.

[0011] In one embodiment of the first aspect, the working part also includes a connecting ring, which is sleeved on the outer side of the outer shell and includes a first connecting end and a second connecting end that are oppositely arranged, the first connecting end and the second connecting end are respectively rotatably connected to two opposite sides of the outer shell, and the first connecting end and the second connecting end are connected on the same straight line L3, and the straight line L3 intersects the axis L2 at the point o.

[0012] Through the above design, the working unit can shake its head left and right along the straight line L3 to sweep the wind, and further ensure the stability of the center of gravity of the working unit.

[0013] In one embodiment of the first aspect, the connecting ring further comprises a third connecting end and a fourth connecting end arranged opposite to each other, the supporting frame comprises a fifth connecting end and a sixth connecting end arranged opposite to each other, the fifth connecting end is rotatably connected to the third connecting end, and the sixth connecting end is rotatably connected to the fourth connecting end;

[0014] The third connection end and the fourth connection end are connected to the same straight line L4, and the straight line L4 is perpendicular to the straight line L3 and intersects at the point o.

[0015] Through the above design, the working unit can shake its head up and down along the straight line L4 to sweep the wind, and ensure the stability of the center of gravity of the working unit.

[0016] In one embodiment of the first aspect, the distance between the first connection end and the second connection end is D1, the distance between the third connection end and the fourth connection end is D2, and the following conditions are satisfied: 100mm≤D1≤200mm, 100mm≤D2≤200mm.

[0017] Through the above design, it is ensured that the range of movement of the shell in each direction is similar during the shaking of the head, and the stability of the center of gravity of the operating part is further ensured.

[0018] In one embodiment of the first aspect, the shell includes a first end face and a second end face arranged opposite to each other, the distance between the point o and the first end face is D3, the distance between the point o and the second end face is D4, and the following conditions are satisfied: 50mm≤D3≤80mm, 50mm≤D4≤80mm.

[0019] Through the above design, the installation capacity of the shell is limited, and D3 and D4 can be the same or remain close, thereby ensuring that the length and weight of the two ends of the shell remain close, and further ensuring the stability of the center of gravity of the working part during the shaking process.

[0020] In one embodiment of the first aspect, the distance between the point o and the center A is D5, and satisfies: 100 mm ≤ D5 ≤ 200 mm.

[0021] Through the above design, the connection distance between the shell and the support part is guaranteed, thereby ensuring the swing range of the working part relative to the support frame, and avoiding the phenomenon that the working part is prone to shaking and the shaking operation is unstable when the distance is too long.

[0022] In one embodiment of the first aspect, the support portion further comprises a rotating plate, the rotating plate being rotatably connected to the center A of the reference plane so as to be controllably rotatable along the axis L1;

[0023] The working part also includes a driving member and a first transmission shaft. The driving member is fixedly arranged in the outer shell. The first transmission shaft is coaxially arranged with the driving member and one end is connected to the output shaft of the driving member, and the other end passes through the outer shell and is non-rotatably connected to point B of the rotating plate. Point B is not on the axis L1.

[0024] Through the above design, when the driving member is fixed in the housing, the entire housing will follow the rotation of the first transmission shaft and the rotating plate, and perform a conical rotation operation along the axis L1, thereby realizing multi-directional shaking and sweeping of the working part.

[0025] In one embodiment of the first aspect, the operating part further includes a fan blade and a second transmission shaft, one end of the second transmission shaft is connected to an end of the driving member facing away from the first transmission shaft, and the other end of the second transmission shaft is connected to the fan blade.

[0026] Through the above design, the air supply of the fan blades and the shaking and sweeping of the working part in multiple directions can be achieved only through the single driving component. The overall structure is streamlined and efficient, and the production cost of the whole machine is effectively reduced.

[0027] In a second aspect, an embodiment of the present application further provides an air supply device, comprising the head assembly described in any of the above embodiments.

[0028] Through the above design, the air supply device can shake its head and sweep the air in multiple directions, and the center of gravity problem can be maintained, thereby increasing the service life of the entire machine.

[0029] Compared with the related art, the beneficial effect of the present application is as follows: the present application provides a head assembly and an air supply device, which can keep the center of gravity of the head assembly relatively stable. The head assembly includes a support portion and an operating portion. The operating portion is mounted on the support portion and performs conical rotation along the axis L1 of the support portion with its own axis L2 as the generatrix. In this way, when the head assembly is shaking its head to sweep the air, the center of gravity of the head assembly always falls on the axis L2, which ensures the stability of the center of gravity of the head assembly, effectively reduces the generation of alternating stress, and improves the service life of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the isometric structure of the head assembly in some embodiments of the present application;

[0032] Figure 2 The cross-sectional structure diagram of the head assembly in some embodiments of the present application Figure 1 ;

[0033] Figure 3 This is a schematic diagram of the structure of the support frame in some embodiments of the present application;

[0034] Figure 4 This is a schematic diagram of the structure of the connecting ring in some embodiments of the present application;

[0035] Figure 5 The cross-sectional structure diagram of the head assembly in some embodiments of the present application Figure 2 ;

[0036] Figure 6 The cross-sectional structure diagram of the head assembly in some embodiments of the present application Figure 3 ;

[0037] Figure 7 The cross-sectional structure diagram of the head assembly in some embodiments of the present application Figure 4 ;

[0038] Figure 8 This is a schematic diagram of the structure of a rotating plate in some embodiments of the present application.

[0039] Description of reference numerals:

[0040] 100. Head assembly; 110. Support part; 111. Support frame; 1111. Fifth connection end; 1112. Sixth connection end; 1113. Reference plane; 112. Rotating plate; 120. Working part; 121. Housing; 1211. First end face; 1212. Second end face; 122. Connecting ring; 1221. First connection end; 1222. Second connection end; 1223. Third connection end; 1224. Fourth connection end; 123. First transmission shaft; 124. Driving member; 125. Second transmission shaft; 126. Fan blade; 127. Gearbox. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In addition, if the term "and / or" appears, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. If the terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0047] In the related art, when the circulating fan shakes its head, the change in the position of the center of gravity of the head will cause alternating stress. It is understandable that alternating stress refers to the stress to which the material is subjected during repeated loading and unloading. This stress will gradually accumulate, leading to material fatigue and damage. Therefore, the long-term effect of alternating stress will cause material fatigue of the shaking head component, thereby reducing the reliability and service life of the component. This will not only affect the overall performance of the circulating fan, but also increase the failure rate and reduce user satisfaction. At the same time, as the reliability of the shaking head component decreases, the circulating fan may experience various failures after a period of use, requiring frequent repairs and replacement of parts, increasing the user's maintenance costs and affecting the market competitiveness of the product.

[0048] See also Figure 1 As shown, in order to improve the above problems, the embodiment of the present application provides a head assembly 100, which is used to keep the center of gravity of the head assembly 100 stable during the shaking process and reduce the generation of alternating stress. It should be noted that, for ease of understanding, in the embodiment of the present application, the head assembly 100 is applied to an air supply device product for illustration, but the head assembly 100 is not limited to the application of air supply device products, and other equipment that requires shaking the head can adopt the head assembly 100 provided in the embodiment of the present application.

[0049] Continue reading Figure 2 and Figure 3As shown, specifically, the head assembly 100 includes a supporting portion 110 and an operating portion 120, wherein the supporting portion 110 is used to provide support to the operating portion 120, the operating portion 120 is installed on the supporting portion 110, and can shake its head in multiple directions relative to the supporting portion 110 to meet the user's multi-directional air supply needs.

[0050] Further, the support portion 110 includes a support frame 111, and the support frame 111 includes a reference surface 1113, and the reference surface 1113 is provided with a center A and an axis L1 passing through the center A. The working portion 120 includes a housing 121, and the housing 121 is movably connected to the support frame 111 and is provided with an axis L2, and the axis L2 intersects the axis L1 at a point o, and the point o does not coincide with the center A. The working portion 120 can be controlled to rotate conically along the axis L1 with the point o as the vertex and the axis L2 as the generatrix.

[0051] Specifically, the working unit 120 is movably mounted on the support frame 111 so as to be able to shake its head and sweep the wind relative to the support frame 111. The reference surface 1113 is a circular surface, and the axis L1 perpendicular to the reference surface 1113 is made with the center A, which limits the working unit 120 to rotate only with the axis L1, and keeps the center of gravity of the working unit 120 on the axis L1. The outer shell 121 of the working unit 120 is a cylindrical structure, and its axis L2 is not parallel to the axis L1, so it intersects with the axis L1 at point o. In this way, when the working unit 120 is in a driving state, it is controlled to make a conical rotational movement along the axis L1 with point o as the vertex and axis L2 as the generatrix, so as to realize the multi-directional sweeping of the working unit 120 up, down, left and right. At the same time, during the shaking of the working unit 120, the center of gravity always falls on point o, which improves the problem of center of gravity change in the relevant technology, thereby reducing the alternating stress during the operation process, improving the reliability and service life of the working unit 120, thereby reducing the maintenance cost and improving the user experience.

[0052] Furthermore, the included angle between the axis L2 and the axis L1 is θ, and satisfies: 10°≤θ≤30°.

[0053] Exemplarily, the angle θ between the axis L2 and the axis L1 can be 10°, 12°, 13°, 15°, 16°, 19°, 20°, 22°, 23°, 25°, 27°, 29°, 30°, etc., which can be reasonably selected according to actual needs and the design size of the whole machine, and is not specifically limited here. By setting the above angle, the rotation range of the working unit 120 is limited to ensure the stability of the center of gravity of the working unit 120, avoid the problem of unstable center of gravity due to excessive angle, and reduce the operating loss of the working unit 120. At the same time, it can ensure that the shaking and sweeping range of the working unit 120 is a suitable experience area for users, thereby improving user experience.

[0054] Continue reading Figure 4As shown, in some embodiments, the working part 120 further includes a connecting ring 122, which is sleeved on the outer side of the housing 121 and includes a first connecting end 1221 and a second connecting end 1222 that are oppositely arranged. The first connecting end 1221 and the second connecting end 1222 are respectively rotatably connected to two opposite sides of the housing 121, and the first connecting end 1221 and the second connecting end 1222 are connected on the same straight line L3, and the straight line L3 intersects the axis L2 at point o.

[0055] Specifically, the first connection end 1221 and the second connection end 1222 are coaxially arranged, and the straight line L3 is used as the axis, and the first connection end 1221 and the second connection end 1222 are respectively located at the upper and lower sides of the housing 121. In this way, when the first connection end 1221 and the second connection end 1222 are rotated and matched with the two opposite sides of the housing 121, the working part 120 can shake its head left and right along the straight line L3 to sweep the wind. At the same time, by comparing the straight line L3 and the axis L2 with the point o, the center of gravity of the working part 120 is further guaranteed to be stable.

[0056] Exemplarily, the shell 121 is provided with installation holes corresponding to the first connection end 1221 and the second connection end 1222. The first connection end 1221 and the second connection end 1222 can be rotatably installed in the holes of the shell 121 through the cooperation of the pin and the retaining spring to achieve rotational cooperation between the shell 121 and the connecting ring 122.

[0057] In other embodiments, the first connection end 1221 and the second connection end 1222 may also be configured as a ball head structure, so that after being assembled with the housing 121 , the housing 121 can be rotated in multiple directions to meet the needs of the working unit 120 to shake its head and sweep the wind in multiple directions.

[0058] Further, the connecting ring 122 further includes a third connecting end 1223 and a fourth connecting end 1224 that are arranged opposite to each other, and the supporting frame 111 includes a fifth connecting end 1111 and a sixth connecting end 1112 that are arranged opposite to each other, the fifth connecting end 1111 is rotatably connected to the third connecting end 1223, and the sixth connecting end 1112 is rotatably connected to the fourth connecting end 1224. The third connecting end 1223 and the fourth connecting end 1224 are connected to the same straight line L4, and the straight line L4 is perpendicular to the straight line L3 and intersects at point o.

[0059] Specifically, the third connection end 1223, the fourth connection end 1224, the fifth connection end 1111 and the sixth connection end 1112 are all coaxially arranged, with the straight line L4 as the axis, and the third connection end 1223 and the fifth connection end 1111 are located on the left side of the housing 121, and the fourth connection end 1224 and the sixth connection end 1112 are located on the right side of the housing 121. In this way, through the rotational cooperation between the fifth connection end 1111 and the third connection end 1223, and the rotational cooperation between the sixth connection end 1112 and the fourth connection end 1224, the working part 120 can shake its head up and down along the straight line L4 to sweep the wind. At the same time, the straight line L4 is perpendicular to the straight line L3 and intersects at point o, which further ensures the stability of the center of gravity of the working part 120. Similarly, the connecting ring 122 and the support frame 111 can be assembled by bolts, pins and other workpieces to achieve the rotational cooperation between the two, which will not be described in detail here.

[0060] Of course, in some specific implementations, due to issues such as process, assembly, and product size, the intersection of the straight line L4 and the straight line L3 may not be located at point o. When the distance between the intersection of the straight line L4 and the straight line L3 and point o is small, the center of gravity of the operating unit 120 can still be limited to a local range to ensure the operation stability of the operating unit 120. Preferably, the intersection of the straight line L4 and the straight line L3 falls at point o, and the center of gravity of the operating unit 120 falls at point o, and the stability of the entire machine is optimal.

[0061] Continue reading Figure 5 and Figure 6 As shown, in some embodiments, the distance between the first connection end 1221 and the second connection end 1222 is D1, the distance between the third connection end 1223 and the fourth connection end 1224 is D2, and the following conditions are satisfied: 100mm≤D1≤200mm, 100mm≤D2≤200mm.

[0062] Exemplarily, the distance D1 between the first connection end 1221 and the second connection end 1222 can be 100mm, 110mm, 120mm, 130mm, 130mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, etc., and the distance D2 between the third connection end 1223 and the fourth connection end 1224 can also be 100mm, 110mm, 120mm, 130mm, 130mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, etc., which can be reasonably selected according to the design of the product and are not specifically limited here. D1 and D2 can be the same or kept close to each other, so as to ensure that the range of movement of the housing 121 in each direction is similar during the shaking process, and further ensure the stability of the center of gravity of the operating unit 120.

[0063] Furthermore, the housing 121 includes a first end face 1211 and a second end face 1212 arranged opposite to each other, a distance D3 between point o and the first end face 1211, a distance D4 between point o and the second end face 1212, and the following conditions are satisfied: 50 mm ≤ D3 ≤ 80 mm, 50 mm ≤ D4 ≤ 80 mm.

[0064] Exemplarily, the distance D3 between point o and the first end face 1211 can be 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, etc., and the distance D4 between point o and the second end face 1212 can also be 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, etc., which can be reasonably selected according to the design of the product and are not specifically limited here. The installation capacity of the housing 121 is limited by the above-mentioned spacing setting, and D3 and D4 can be the same or kept close, so as to ensure that the length and weight of the two ends of the housing 121 are kept close, and further ensure the stability of the center of gravity of the operating unit 120 during the shaking process.

[0065] Furthermore, the distance between point o and the center A is D5, and satisfies: 100mm≤D5≤200mm.

[0066] For example, the distance D5 between point o and the center of circle A can be 100mm, 110mm, 120mm, 130mm, 130mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, etc., which can be reasonably selected according to the design of the product and is not specifically limited here. By setting the above numerical values, the connection distance between the housing 121 and the support part 110 is guaranteed, thereby ensuring the swing range of the working part 120 relative to the support frame 111, and avoiding the phenomenon that the working part 120 is easy to shake when the distance is too long, and the shaking operation is unstable.

[0067] Continue reading Figure 7 and Figure 8 As shown, in a specific embodiment, the support part 110 further includes a rotating plate 112, which is rotatably connected to the center A of the reference surface 1113 so as to be controllably rotatable along the axis L1. The working part 120 further includes a driving member 124 and a first transmission shaft 123, the driving member 124 is fixedly disposed in the housing 121, the first transmission shaft 123 is coaxially disposed with the driving member 124 and one end is connected to the output shaft of the driving member 124, and the other end passes through the housing 121 and is non-rotatably connected to point B of the rotating plate 112, and point B is not on the axis L1.

[0068] Specifically, the rotating plate 112 can be rotated at the center A of the reference surface 1113 by means of bolts or pins, so that the center A can be rotated. The driving member 124 can be a rotating motor to drive the first transmission shaft 123 to rotate when powered on. The first transmission shaft 123 and the driving member 124 share the same axis L2, and the end of the first transmission shaft 123 away from the driving member 124 is locked with the point B of the rotating plate 112, so that when the driving member 124 drives the first transmission shaft 123 to rotate, the first transmission shaft 123 cannot rotate relative to the rotating plate 112, and can only drive the rotating plate 112 to rotate along the axis L1. In this way, when the driving member 124 is fixed in the housing 121, the housing 121 as a whole will follow the rotation of the first transmission shaft 123 and the rotating plate 112, and perform a conical rotation operation along the axis L1, so as to realize the multi-directional shaking and sweeping of the working part 120.

[0069] It is understandable that point B is only used for reference. In actual situations, it can also be expanded to mean a region, that is, the first transmission shaft 123 is connected to the region. Since point B does not coincide with the center A, the rotating plate 112 forms a cam-like structure, and the first rotating shaft performs a conical rotating motion.

[0070] Of course, in other embodiments, the conical rotation movement of the working part 120 can also be achieved by other structures, such as controlling the wind sweeping movement in different directions by multiple motors. The specific structures are not listed here one by one, and it is sufficient to meet the requirement of stable center of gravity of the working part 120 in this application.

[0071] Furthermore, the operating unit 120 further includes a fan blade 126 and a second transmission shaft 125 . One end of the second transmission shaft 125 is connected to one end of the driving member 124 facing away from the first transmission shaft 123 , and the other end is connected to the fan blade 126 .

[0072] Specifically, the second transmission shaft 125 and the driving member 124 also share the axis L2 and are located at the end of the driving member 124 facing away from the first transmission shaft 123. The second transmission shaft 125 is connected to the transmission shaft of the driving member 124, so that it rotates under the drive of the driving member 124, thereby driving the fan blades 126 to rotate and supply air to the user. In this way, the air supply of the fan blades 126 and the shaking of the operating part 120 in multiple directions can be achieved only through a single driving member 124, the overall structure is streamlined, the efficiency is high, and the production cost of the whole machine is effectively reduced.

[0073] In other embodiments, only the first transmission shaft 123 may be provided, and the first transmission shaft 123 passes through both ends of the driving member 124, so that both ends of the first transmission shaft 123 are respectively connected to the rotating plate 112 and the fan blade 126. In this way, the first transmission rod is driven to rotate by the driving member 124, so as to realize the rotation of the fan blade 126 and the shaking operation of the working part 120.

[0074] In some embodiments, the working part 120 further includes a gearbox 127 , which is installed on one side of the driving member 124 where the first transmission shaft 123 is provided, and is respectively connected to the driving member 124 and the first transmission shaft 123 .

[0075] Specifically, a gear set structure is provided in the gearbox 127, which is respectively connected to the driving member 124 and the first transmission shaft 123, so as to adjust the rotation speed of the first transmission shaft 123, thereby limiting the shaking speed of the working part 120, reducing the wear of the first transmission shaft 123, and improving the service life of the whole machine.

[0076] An embodiment of the present application further provides an air supply device, comprising the head assembly 100 and the body assembly in any of the above embodiments.

[0077] Exemplarily, the air supply device may be a circulating fan, and the head assembly 100 is installed on the fuselage assembly. The fuselage assembly may include a plurality of support rods that can be telescopically adjusted to adjust the working height of the head assembly 100.

[0078] This embodiment has the head assembly 100 of any of the above embodiments, and therefore has all the beneficial effects of the head assembly 100 of any of the above embodiments, which will not be described in detail here.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0080] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A head assembly, characterized in that: include: A support portion, comprising a support frame, wherein the support frame comprises a reference surface, wherein the reference surface is provided with a center A and an axis L1 passing through the center A; The working part includes a shell, which is movably connected to the support frame and is provided with an axis L2, the axis L2 intersects with the axis L1 at point o, the point o does not coincide with the center A of the circle, and the working part can be controlled to make a conical rotation along the axis L1 with the point o as the vertex and the axis L2 as the generatrix.

2. The head assembly according to claim 1, characterized in that: The included angle between the axis L2 and the axis L1 is θ, and satisfies: 10°≤θ≤30°.

3. The head assembly according to claim 1, characterized in that: The working part also includes a connecting ring, which is sleeved on the outside of the outer shell and includes a first connecting end and a second connecting end arranged opposite to each other, the first connecting end and the second connecting end are respectively rotatably connected to two opposite sides of the outer shell, and the first connecting end and the second connecting end are connected on the same straight line L3, and the straight line L3 intersects with the axis L2 at the point o.

4. The head assembly according to claim 3, characterized in that: The connecting ring further comprises a third connecting end and a fourth connecting end arranged opposite to each other, the supporting frame comprises a fifth connecting end and a sixth connecting end arranged opposite to each other, the fifth connecting end is rotatably connected to the third connecting end, and the sixth connecting end is rotatably connected to the fourth connecting end; The third connection end and the fourth connection end are connected to the same straight line L4, and the straight line L4 is perpendicular to the straight line L3 and intersects at the point o.

5. The head assembly according to claim 4, characterized in that: The distance between the first connection end and the second connection end is D1, the distance between the third connection end and the fourth connection end is D2, and the following conditions are satisfied: 100mm≤D1≤200mm, 100mm≤D2≤200mm.

6. The head assembly according to claim 1, characterized in that: The housing includes a first end face and a second end face arranged opposite to each other, the distance between the point o and the first end face is D3, the distance between the point o and the second end face is D4, and the following conditions are satisfied: 50mm≤D3≤80mm, 50mm≤D4≤80mm.

7. The head assembly according to claim 1, characterized in that: The distance between the point o and the center A is D5, and satisfies: 100mm≤D5≤200mm.

8. The head assembly according to claim 1, characterized in that: The support portion further comprises a rotating plate, the rotating plate being rotatably connected to the center A of the reference plane so as to be controllably rotatable along the axis L1; The working part also includes a driving member and a first transmission shaft. The driving member is fixedly arranged in the outer shell. The first transmission shaft is coaxially arranged with the driving member and one end is connected to the output shaft of the driving member, and the other end passes through the outer shell and is non-rotatably connected to point B of the rotating plate. Point B is not on the axis L1.

9. The head assembly according to claim 8, characterized in that: The operating part further includes a fan blade and a second transmission shaft, wherein one end of the second transmission shaft is connected to an end of the driving member facing away from the first transmission shaft, and the other end of the second transmission shaft is connected to the fan blade.

10. An air supply device, characterized in that: A head assembly comprising any one of claims 1 to 9.

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