Fan head assembly and fan

Abstract

The invention relates to a fan head assembly and a fan. The fan head assembly comprises a first shell and a second shell, and the first shell and the second shell jointly define a mounting cavity; the motor and the wind wheel are located in the mounting cavity, and the motor is connected to the first shell or the second shell; the positioning assembly comprises a first positioning piece and a second positioning piece, the first positioning piece and the second positioning piece are arranged on the first shell and the second shell respectively, and the first positioning piece and the second positioning piece are matched in a clamping mode or an adsorption mode. The fan head assembly and the fan are easy to disassemble and low in maintenance cost.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a fan head assembly and a fan. Background Art

[0002] Among the fans currently on the market, the fan head assembly usually includes a casing, a wind wheel, a motor and a cover, wherein the wind wheel and the motor are contained in the casing, and the cover covers the open end of the casing. The casing and the cover are then fixed together by a mechanical structure. Although this design is compact in structure, it has some shortcomings during use. Especially after long-term use, the wind wheel is prone to accumulate dust and dirt, which affects the performance and air quality of the fan. At this time, the user needs to maintain and clean the fan. However, when maintaining the fan of the related art, professional tools are required to disassemble the cover, which is relatively unchanged and also makes the maintenance cost higher. Summary of the invention

[0003] Based on this, it is necessary to provide a fan head assembly and a fan with simple disassembly and low maintenance cost to address the problems of inconvenient fan disassembly and high maintenance cost in the related art.

[0004] A fan head assembly, comprising:

[0005] A first shell and a second shell, the first shell and the second shell together enclose a mounting cavity;

[0006] A motor and a wind wheel, wherein the motor and the wind wheel are located in the mounting cavity, and the motor is connected to the first housing or the second housing; and

[0007] The positioning component comprises a first positioning member and a second positioning member, wherein the first positioning member and the second positioning member are respectively arranged on the first shell and the second shell, and the first positioning member and the second positioning member are engaged in a snap-fit ​​or adsorption-fit manner.

[0008] Since the motor and the wind wheel are located in the installation cavity, and the motor is connected to the first shell or the second shell, and the first positioning member and the second positioning member are snap-fitted or adsorbed, when the operator needs to disassemble and maintain the fan head assembly, he only needs to fix the first shell and apply force to the second shell, or fix the second shell and apply force to the first shell, so that the first positioning member and the second positioning member can be released from the snap-fit ​​or adsorbed fit, and the wind wheel and other components can be maintained or cleaned. In the present application, the quick-release structure of the first shell and the second shell is realized by snap-fitting or adsorbing the first positioning member and the second positioning member, so that the relative disassembly of the first shell and the second shell becomes easy to achieve, and since no professional disassembly tools are required, the maintenance cost is also reduced.

[0009] In some of the embodiments, the first positioning member and the second positioning member are magnetically engaged with each other.

[0010] In some embodiments, the first shell includes a first bottom wall and a first side wall connected to the first bottom wall; the second shell includes a second bottom wall and a second side wall connected to the second bottom wall;

[0011] The end surfaces of the first side wall and the second side wall facing each other are correspondingly spliced ​​to enclose the installation cavity; the first positioning member and the second positioning member are respectively installed on the end surfaces of the first side wall and the second side wall facing each other.

[0012] In some embodiments, the end surfaces of the first side wall and the second side wall facing each other are respectively provided with a groove portion and a protrusion portion that can be plugged into and matched with each other;

[0013] The first positioning piece is embedded in the bottom wall of the groove portion, and the second positioning piece is embedded in the protruding portion.

[0014] In some embodiments, a first positioning hole is formed on the bottom wall of the groove portion, and a second positioning hole is formed on the protruding portion;

[0015] The hole walls of the first positioning hole and the second positioning hole are both provided with positioning ribs extending in the axial direction;

[0016] The first positioning member is positioned in the first positioning hole through the corresponding positioning ribs, and the second positioning member is positioned in the second positioning hole through the corresponding positioning ribs.

[0017] In some embodiments, the end surfaces of the first side wall and the second side wall facing each other are respectively provided with a matching groove and a matching rib that can be plugged into and matched with each other;

[0018] The matching groove extends along the end surface of the first side wall and communicates with the interior of the groove portion, and the matching rib extends along the end surface of the second side wall and is connected to the protruding portion.

[0019] In some embodiments, the number of the first positioning members and the number of the second positioning members are both plural, and the setting positions of the first positioning members correspond one-to-one to the setting positions of the second positioning members;

[0020] A plurality of first positioning members are arranged at intervals along the circumference of the first side wall, and a plurality of second positioning members are arranged at intervals along the circumference of the second side wall.

[0021] In some embodiments, a motor positioning cover is provided on one side of the second bottom wall facing the first housing, the motor is located in the motor positioning cover, and a motor shaft of the motor passes through the motor positioning cover and extends into the installation cavity toward the first housing;

[0022] The wind wheel is installed on the motor shaft.

[0023] In some of the embodiments, the fan head assembly further comprises a stop knob, which is mounted on the motor shaft and is used to position the fan wheel on the motor shaft.

[0024] In some embodiments, a mounting opening is further provided on a side of the motor positioning cover facing away from the first housing, and a cover plate is detachably mounted on the mounting opening.

[0025] In some embodiments, a notch is provided on the second bottom wall, a plurality of support arms are provided on the edge of the notch, a side of the support arm away from the notch is bent toward the first shell and connected to the outer side of the motor positioning cover.

[0026] A fan comprises the above-mentioned fan head assembly.

[0027] Since the fan adopts the above-mentioned fan head assembly, similar to the above, when the operator needs to disassemble and maintain the fan head assembly, he only needs to fix the first shell and apply force to the second shell, or fix the second shell and apply force to the first shell, so that the first positioning member and the second positioning member can be released from the snap-fit ​​or adsorption fit, and the impeller and other components can be maintained or cleaned. Since no professional disassembly tools are required, the maintenance cost of the fan is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic cross-sectional view of a fan head assembly in some embodiments of the present application;

[0029] FIG2 is a partial enlarged view of point A in FIG1;

[0030] FIG3 is a front view of a fan head assembly in some embodiments of the present application;

[0031] FIG4 is a schematic diagram of the exploded structure of a fan head assembly in some embodiments of the present application;

[0032] FIG5 is a schematic diagram of the structure of the first housing in some embodiments of the present application;

[0033] FIG6 is a schematic diagram of the structure of the second housing in some embodiments of the present application;

[0034] FIG7 is a partial enlarged view of point B in FIG5 ;

[0035] FIG. 8 is a partial enlarged view of point C in FIG. 6 .

[0036] Description of reference numerals:

[0037] 100, fan head assembly; 101, mounting cavity; 102, opening; 10, first shell; 11, first bottom wall; 12, first side wall; 121, groove portion; 1210, first positioning hole; 122, matching groove; 20, second shell; 21, second bottom wall; 210, notch portion; 22, second side wall; 221, protrusion; 2210, second positioning hole; 2211, positioning rib; 222, matching rib; 23, support arm; 30, motor positioning cover; 31, mounting port; 32, cover plate; 40, motor; 41, motor shaft; 50, wind wheel; 60, positioning assembly; 61, first positioning member; 62, second positioning member; 70, stop knob. DETAILED DESCRIPTION

[0038] 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.

[0039] In the description of the present application, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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 specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a 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. A first feature being “below”, “below”, and “below” a 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.

[0043] It should be noted that when 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. When 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. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0044] Figure 1 is a schematic diagram of the cross-sectional structure of the fan head assembly in some embodiments of the present application; Figure 2 is a partial enlarged view of point A in Figure 1; Figure 3 is a front view of the fan head assembly in some embodiments of the present application; Figure 4 is a schematic diagram of the decomposed structure of the fan head assembly in some embodiments of the present application; Figure 5 is a schematic diagram of the structure of the first shell in some embodiments of the present application; Figure 6 is a schematic diagram of the structure of the second shell in some embodiments of the present application; Figure 7 is a partial enlarged view of point B in Figure 5; Figure 8 is a partial enlarged view of point C in Figure 6.

[0045] 1 , 2 and 3 , a fan head assembly 100 provided in an embodiment of the present application includes: a first housing 10 , a second housing 20 , a motor 40 , a wind wheel 50 and a positioning assembly 60 .

[0046] The first housing 10 and the second housing 20 together enclose an installation cavity 101. The motor 40 and the wind wheel 50 are located in the installation cavity 101, and the motor 40 is connected to the first housing 10 or the second housing 20. The positioning assembly 60 includes a first positioning member 61 and a second positioning member 62, which are respectively arranged on the first housing 10 and the second housing 20, and the first positioning member 61 and the second positioning member 62 are snap-fitted or adsorbed.

[0047] Since the motor 40 and the wind wheel 50 are located in the installation cavity 101, and the motor 40 is connected to the first shell 10 or the second shell 20, and the first positioning member 61 and the second positioning member 62 are snap-fitted or adsorbed, when the operator needs to disassemble and maintain the fan head assembly 100, he only needs to fix the first shell 10 and apply force to the second shell 20, or fix the second shell 20 and apply force to the first shell 10, so that the first positioning member 61 and the second positioning member 62 can be released from the snap-fitting or adsorbing fit, and the wind wheel 50 and other components can be maintained or cleaned. In the present application, the quick-release structure of the first shell 10 and the second shell 20 is realized by snap-fitting or adsorbing the first positioning member 61 and the second positioning member 62, so that the relative disassembly of the first shell 10 and the second shell 20 becomes easy to achieve, and since no professional disassembly tools are required, the maintenance cost is also reduced.

[0048] In addition, if the motor 40 is connected to the first housing 10 , the second housing 20 can be disassembled; if the motor 40 is connected to the second housing 20 , the first housing 10 can be disassembled, so as to further reduce the difficulty of disassembly.

[0049] In the embodiment of the present application, the motor 40 is connected to the second shell 20 for illustration. In actual implementation, the motor 40 may also be connected to the first shell 10. The situation where the motor 40 is connected to the first shell 10 is similar to this and will not be repeated here.

[0050] Here, the adsorption cooperation may be, for example, the magnetic attraction cooperation between the first positioning member 61 and the second positioning member 62 .

[0051] In this way, the quick release connection of the first positioning member 61 and the second positioning member 62 can be achieved. In some embodiments, the first positioning member 61 and the second positioning member 62 can be magnets with opposite polarities. In some other embodiments, the first positioning member 61 and the second positioning member 62 can also be snap-fitted, for example, the first positioning member 61 can be provided with a slot, and the second positioning member 62 can be provided as a post that snaps with the slot, so that the quick release of the first positioning member 61 and the second positioning member 62 can be simply achieved.

[0052] In the embodiment of the present application, in conjunction with Figures 4, 5 and 6, the first housing 10 includes a first bottom wall 11 and a first side wall 12 connected to the first bottom wall 11. The second housing 20 includes a second bottom wall 21 and a second side wall 22 connected to the second bottom wall 21. The first housing 10 and the second housing 20 can both be formed as a cover-shaped member.

[0053] The end surfaces of the first side wall 12 and the second side wall 22 facing each other are correspondingly assembled to enclose the installation cavity 101. The first positioning member 61 and the second positioning member 62 are respectively installed on the end surfaces of the first side wall 12 and the second side wall 22 facing each other.

[0054] In this way, during the process of joining the opposite end faces of the first side wall 12 and the second side wall 22 , the first positioning member 61 and the second positioning member 62 can achieve quick-release fit, making the fit structure relatively simple and easy to implement.

[0055] In the embodiment of the present application, further, in combination with FIG. 7 and FIG. 8 , the end surfaces of the first side wall 12 and the second side wall 22 facing each other are respectively provided with a groove portion 121 and a protrusion portion 221 that can be plugged into and matched with each other.

[0056] The first positioning member 61 is embedded in the bottom wall of the groove portion 121 , and the second positioning member 62 is embedded in the protruding portion 221 .

[0057] In this way, when the protrusion 221 is inserted into the groove 121, the first positioning member 61 and the second positioning member 62 can contact and achieve adsorption. Of course, the first positioning member 61 can be set flush with the bottom wall of the groove 121, and the second positioning member 62 can be set flush with the top surface of the protrusion 221, so that the adsorption and cooperation of the first positioning member 61 and the second positioning member 62 are smoother.

[0058] Further, a first positioning hole 1210 is formed on the bottom wall of the groove portion 121, and a second positioning hole 2210 is formed on the protruding portion 221. The hole walls of the first positioning hole 1210 and the second positioning hole 2210 are both provided with positioning ribs 2211 extending in the axial direction. The first positioning member 61 is clamped and positioned in the first positioning hole 1210 by the corresponding positioning ribs 2211, and the second positioning member 62 is clamped and positioned in the second positioning hole 2210 by the corresponding positioning ribs 2211. In this way, it is convenient for the first positioning member 61 to be installed in the first positioning hole 1210 or removed from the first positioning hole 1210. It is also convenient for the second positioning member 62 to be installed in the second positioning hole 2210 or removed from the second positioning hole 2210. In addition, the first positioning member 61 and the second positioning member 62 can both be configured as columnar members.

[0059] By setting the positioning ribs 2211, the first positioning member 61 can be firmly clamped in the first positioning hole 1210, and the second positioning member 62 can be firmly clamped in the second positioning hole 2210. The number of positioning ribs 2211 can be set as needed. In the examples of FIG7 and FIG8, the number of positioning ribs 2211 in the first positioning hole 1210 is four, and the four positioning ribs 2211 are evenly distributed around the hole wall of the first positioning hole 1210. Similarly, the number of positioning ribs 2211 in the second positioning hole 2210 is four, and the four positioning ribs 2211 are evenly distributed around the hole wall of the second positioning hole 2210. Of course, the number and arrangement position of the positioning ribs 2211 can also be set according to actual needs.

[0060] Further, in conjunction with FIG. 5 to FIG. 8 , the end surfaces of the first side wall 12 and the second side wall 22 facing each other are further provided with a matching groove 122 and a matching rib 222 that can be plugged into and matched with each other.

[0061] The matching groove 122 extends along the end surface of the first side wall 12 and communicates with the inside of the groove portion 121, and the matching rib 222 extends along the end surface of the second side wall 22 and is connected to the protrusion 221. In this way, the end surfaces of the first shell 10 and the second shell 20 that are combined with each other can have better sealing performance. When the first shell 10 and the second shell 20 are matched, the matching rib 222 of the second shell 20 enters the matching groove 122 of the first shell 10, and the protrusion 221 of the second shell enters the groove portion 121 of the first shell 10.

[0062] In the embodiment of the present application, referring to Fig. 5 and Fig. 6, the number of the first positioning members 61 and the number of the second positioning members 62 can be multiple, and the setting position of the first positioning member 61 corresponds to the setting position of the second positioning member 62 one by one. In the example of the present application, the number of the first positioning members 61 and the number of the second positioning members 62 are both three as an example for explanation. In specific implementation, an opening 102 is also provided on the structure enclosed by the first shell 10 and the second shell 20, which is the ventilation port of the fan head assembly 100. The three first positioning members 61 are respectively arranged at positions of the first side wall 12 avoiding the opening 102, and are arranged at intervals along the circumference of the first side wall 12, and the three second positioning members 62 are respectively arranged at positions of the second side wall 22 avoiding the opening 102, and are arranged at intervals along the circumference of the second side wall 22.

[0063] In the embodiment of the present application, in combination with FIG. 1 and FIG. 6 , a motor positioning cover 30 is provided on the side of the second bottom wall 21 facing the first housing 10, the motor 40 is located in the motor positioning cover 30, and the motor shaft 41 of the motor 40 is passed through the motor positioning cover 30 and extends into the installation cavity 101 toward the first housing 10. The wind wheel 50 is installed on the motor shaft 41. In this way, the wind wheel 50 can be connected to the motor shaft 41, and the motor shaft 41 can drive the wind wheel 50 to rotate when rotating.

[0064] In some embodiments, in combination with FIG. 1 and FIG. 4 , the fan head assembly 100 further includes a stop knob 70 , which is mounted on the motor shaft 41 and is used to position the impeller 50 on the motor shaft 41 .

[0065] Exemplarily, the stop knob 70 can be sleeved and connected to the motor shaft 41 in a manner of threaded cooperation with the motor shaft 41, and external teeth are provided on the outer peripheral surface of the stop knob 70, and internal teeth are provided at positions corresponding to the external teeth on the wind wheel 50. The wind wheel 50 is sleeved on the stop knob 70, and the internal teeth and the external teeth are meshed with each other, so that the wind wheel 50 and the stop knob 70 are relatively fixed.

[0066] In the embodiment of the present application, with continued reference to FIG. 1 , a mounting opening 31 is further provided on a side of the motor positioning cover 30 facing away from the first housing 10 , and a cover plate 32 is detachably mounted on the mounting opening 31 .

[0067] In this way, the cover plate 32 and the motor positioning cover 30 together define a receiving cavity for installing the motor 40 , and the motor 40 can also be installed in the motor positioning cover 30 or taken out from the motor positioning cover 30 through the installation opening 31 .

[0068] Further, referring to Fig. 6, a notch 210 is provided on the second bottom wall 21, and a plurality of support arms 23 are provided on the edge of the notch 210, and a side of the support arm 23 away from the notch 210 is bent toward the first housing 10 and connected to the outer side of the motor positioning cover 30. In this way, the motor positioning cover 30 can be suspended and fixed on the second housing 20 through the plurality of support arms 23.

[0069] The present application also provides a fan, comprising the above-mentioned fan head assembly 100. The fan may be, for example, a cooling fan.

[0070] In the embodiment of the present application, the fan head assembly 100 includes a first housing 10 and a second housing 20, and the first housing 10 without the motor 40 can be disassembled for cleaning. The first housing 10 and the second housing 20 can be fixed by magnetic attraction, so that the first housing 10 and the second housing 20 are easy to disassemble and clean. This not only solves the problem of inconvenient cleaning in the fan of the related art, but also improves the performance of the fan and the user experience.

[0071] During the specific installation, first align the wind wheel 50 with the motor shaft 41 to ensure that the wind wheel 50 is coaxial with the motor shaft 41. Fix the wind wheel 50 on the motor shaft 41 through the stop knob 70. Ensure that the wind wheel 50 and the motor shaft 41 are firmly and balancedly fixed to avoid vibration or noise during operation. Then align each first positioning member 61 and each second positioning member 62 with each other, insert the matching rib 222 of the second shell 20 into the matching groove 122 of the first shell 10, and the protrusion 221 of the second shell into the groove 121 of the first shell 10, so that the first positioning member 61 and the second positioning member 62 are mutually adsorbed, and the first shell 10 is installed on the second shell 20.

[0072] During disassembly, it is only necessary to fix the second shell 20 and pull the first shell 10 in a direction away from the second shell 20 to disassemble the first shell 10, so as to clean and maintain the wind wheel 50 and the like.

[0073] 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.

[0074] 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 fan head assembly, characterized in that: include: A first shell and a second shell, wherein the first shell and the second shell together enclose an installation cavity; A motor and a wind wheel, wherein the motor and the wind wheel are located in the installation cavity, and the motor is connected to the first shell or the second shell; as well as The positioning component comprises a first positioning member and a second positioning member, wherein the first positioning member and the second positioning member are respectively arranged on the first shell and the second shell, and the first positioning member and the second positioning member are snap-fitted or adsorbed.

2. The fan head assembly according to claim 1, characterized in that: The first positioning member and the second positioning member are magnetically coupled to each other.

3. The fan head assembly according to claim 2, characterized in that: The first shell includes a first bottom wall and a first side wall connected to the first bottom wall; the second shell includes a second bottom wall and a second side wall connected to the second bottom wall; The end surfaces of the first side wall and the second side wall facing each other are correspondingly spliced ​​to enclose the installation cavity; the first positioning member and the second positioning member are respectively installed on the end surfaces of the first side wall and the second side wall facing each other.

4. The fan head assembly according to claim 3, characterized in that: The end surfaces of the first side wall and the second side wall facing each other are respectively provided with a groove portion and a protrusion portion that can be plugged into and matched with each other; The first positioning member is embedded in the bottom wall of the groove portion, and the second positioning member is embedded in the protruding portion.

5. The fan head assembly according to claim 4, characterized in that: The bottom wall of the groove portion is provided with a first positioning hole, and the protruding portion is provided with a second positioning hole; The hole walls of the first positioning hole and the second positioning hole are both provided with positioning ribs extending in the axial direction; The first positioning member is positioned in the first positioning hole through the corresponding positioning rib, and the second positioning member is positioned in the second positioning hole through the corresponding positioning rib.

6. The fan head assembly according to claim 4, characterized in that: The end surfaces of the first side wall and the second side wall facing each other are also respectively provided with matching grooves and matching ribs that can be plugged into and matched with each other; The matching groove extends along the end surface of the first side wall and communicates with the interior of the groove portion, and the matching rib extends along the end surface of the second side wall and is connected to the protruding portion.

7. The fan head assembly according to claim 3, characterized in that: The number of the first positioning members and the number of the second positioning members are both plural, and the setting positions of the first positioning members correspond one-to-one to the setting positions of the second positioning members; A plurality of first positioning members are arranged at intervals along the circumference of the first side wall, and a plurality of second positioning members are arranged at intervals along the circumference of the second side wall.

8. The fan head assembly according to claim 3, characterized in that: A motor positioning cover is provided on one side of the second bottom wall facing the first shell, the motor is located in the motor positioning cover, and a motor shaft of the motor passes through the motor positioning cover and extends into the installation cavity toward the first shell; The wind wheel is mounted on the motor shaft.

9. The fan head assembly according to claim 8, characterized in that: The fan head assembly also includes a stop knob, which is mounted on the motor shaft and is used to position the wind wheel on the motor shaft.

10. The fan head assembly according to claim 8, characterized in that: A mounting opening is further provided on a side of the motor positioning cover facing away from the first shell, and a cover plate is detachably mounted on the mounting opening.

11. The fan head assembly according to claim 8, characterized in that: A notch is provided on the second bottom wall, and a plurality of support arms are provided at the edge of the notch. A side of the support arm away from the notch is bent toward the first shell and connected to the outer side of the motor positioning cover.

12. A fan, characterized in that: Comprising a fan head assembly as claimed in any one of claims 1-11.

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