Cross-flow fan and head-mounted equipment

Abstract

The invention discloses a cross-flow fan and head-mounted equipment, the cross-flow fan is applied to the head-mounted equipment, the cross-flow fan comprises a fan shell, a fan body and a micro motor, the fan shell comprises a first end wall and a second end wall which are oppositely arranged, and a first side wall and a second side wall which are oppositely arranged; the first end wall is connected with the first side wall and the second side wall, and the second end wall is connected with the first side wall and the second side wall; the fan main body is arranged in the fan shell; the fan body comprises an impeller and a middle shaft, the middle shaft is sleeved with the impeller, the first end of the middle shaft is rotationally connected with the first end wall, and the second end of the middle shaft is rotationally connected with the second end wall; the micro motor is arranged outside the fan shell and connected with the first end of the middle shaft so as to drive the middle shaft and the impeller to rotate.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and more specifically, to a cross-flow fan and a head-mounted device. Background Art

[0002] With the rapid development of technology, head-mounted devices such as virtual reality (VR) glasses, augmented reality (AR) glasses, and smart helmets have been widely used in a variety of fields, including entertainment, education, industry, and healthcare. While these devices provide an immersive experience, they can easily overheat due to heat generated by the device's internal electronic components and heat dissipated by the human head during extended use. Excessive temperatures not only affect device performance and stability, shorten the lifespan of electronic components, but can also cause discomfort and even affect user health.

[0003] To address the heat dissipation issues faced by headsets, passive cooling methods such as heat sinks and fins are currently the primary method. However, these methods have limited efficiency and are unable to meet the cooling requirements of headsets operating under high loads. Some headsets have also attempted to use fans for active cooling. However, traditional fans are often bulky, heavy, and noisy, making them unsuitable for headsets with high requirements for size, weight, and noise.

[0004] Crossflow fans, as a special type of fan, offer advantages such as high air volume, uniform air pressure, and low noise, and are widely used in air conditioners, air purifiers, and other fields. However, their application in head-mounted devices (HMDs) faces numerous challenges, such as miniaturizing them to fit within the compact dimensions of HMDs, ensuring stable and reliable operation within the HMDs, and easily installing them. Therefore, developing a crossflow fan specifically for HMDs is of great practical significance. Summary of the Invention

[0005] One purpose of this application is to provide a new technical solution for a cross-flow fan and a head-mounted device.

[0006] According to a first aspect of the present application, a cross-flow fan is provided, which is applied to a head-mounted device and includes: a fan housing, the fan housing comprising a first end wall and a second end wall disposed opposite to each other, and a first side wall and a second side wall disposed opposite to each other; the first end wall is connected to the first side wall and the second side wall, and the second end wall is connected to the first side wall and the second side wall; a fan body, the fan body being disposed inside the fan housing; the fan body comprising an impeller and a central shaft, the impeller being sleeved on the outside of the central shaft, the first end of the central shaft being rotatably connected to the first end wall, and the second end of the central shaft being rotatably connected to the second end wall; A micro motor is arranged outside the fan housing and is connected to the first end of the central shaft to drive the central shaft and the impeller to rotate.

[0007] Optionally, the cross-flow fan includes a first bearing and a second bearing, the first end wall is provided with a first bearing hole, the second end wall is provided with a second bearing hole, the first bearing is installed in the first bearing hole, the second bearing is installed in the second bearing hole, the first end of the central axis is inserted into the first bearing, and the second end of the central axis is inserted into the second bearing.

[0008] Optionally, the cross-flow fan includes a speed regulating transmission component, and the micro motor is connected to the first end of the central shaft through the speed regulating transmission component.

[0009] Optionally, the speed regulating transmission component includes a gear box and a gear set, and the gear set is arranged in the gear box; the output shaft of the micro motor extends into the gear box and is connected to the primary gear of the gear set, and the first end of the middle shaft extends into the gear box and is connected to the final gear of the gear set.

[0010] Optionally, the speed regulating transmission component includes a gear box housing, and the gear box is arranged in the gear box housing.

[0011] Optionally, the fan housing includes a limiting enclosure, which is connected to the outer side of the first end wall, and the inner surface of the limiting enclosure has a shape that is compatible with the gear box housing. The gear box housing is installed on the inner side of the limiting enclosure, and the gear box housing is at least partially in contact with the inner surface of the limiting enclosure.

[0012] Optionally, the cross-flow fan includes a cover plate, the cover plate is provided with a first axial hole, the cover plate is connected to the outer side of the second end wall, the second bearing hole is connected to the first axial hole, and the second end of the central axis extends into the first axial hole.

[0013] Optionally, a positioning groove is formed on the outer side of the second end wall, and the cover plate is installed in the positioning groove by a fastener.

[0014] Optionally, the fan housing further includes a first connecting ear and a second connecting ear, the first connecting ear being connected to the first end wall, and the second connecting ear being connected to the second end wall; The first connecting ear is provided with a first mounting hole, and the second connecting ear is provided with a second mounting hole; the first mounting hole and the second mounting hole are used to insert fasteners to install the cross-flow fan on the head-mounted device.

[0015] According to a second aspect of the present application, a head-mounted device is provided, comprising the cross-flow fan as described in the first aspect.

[0016] The cross-flow fan provided in the embodiment of the present application has a compact structure and is easy to install and use in a head-mounted device. It can effectively provide airflow for the head-mounted device to play a role in heat dissipation or ventilation, thereby improving the user's wearing experience.

[0017] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0019] Figure 1 The figure shows the overall structure of the cross-flow fan in the embodiment of the present application. Figure 1 ; Figure 2 The figure shows the overall structure of the cross-flow fan in the embodiment of the present application. Figure 2 ; Figure 3 The figure shows the structure of the fan housing in the cross-flow fan of the embodiment of the present application. Figure 1 ; Figure 4 The figure shows the structure of the fan housing in the cross-flow fan of the embodiment of the present application. Figure 2 ; Figure 5 The figure shows the structure of the fan housing in the cross-flow fan of the embodiment of the present application. Figure 3 .

[0020] Description of reference numerals: 1. Crossflow fan; 11. Fan housing; 111. First end wall; 1110. First bearing hole; 112. Second end wall; 1120. Second bearing hole; 1121. Positioning slot; 113. First side wall; 114. Second side wall; 1101. Air inlet; 1102. Air outlet; 1103. Guide slot; 1130. First air guide portion; 1140. Second air guide portion; 115. First connecting lug; 1150. First mounting hole; 116. Second connecting lug; 1160. Second mounting hole; 117. Positioning plate; 12. Fan body; 121. Impeller; 122. Central shaft; 13. Micro motor; 141. First bearing; 142. Second bearing; 15. Speed ​​regulating transmission component; 151. Gear box; 152. Gear box housing; 16. Cover plate; 160. First shaft hole; 17. Screw; 18. Pressing piece. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0022] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0023] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0024] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0025] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] Reference Figure 1-Figure 5 As shown, according to one embodiment of the present application, a cross-flow fan 1 is provided, which is applied to a head-mounted device. The cross-flow fan 1 includes a fan housing 11, a fan body 12, and a micro motor 13. The fan housing 11 includes a first end wall 111 and a second end wall 112 that are opposite to each other, and a first side wall 113 and a second side wall 114 that are opposite to each other; the first end wall 111 is connected to the first side wall 113 and the second side wall 114, and the second end wall 112 is connected to the first side wall 113 and the second side wall 114; The fan body 12 is disposed inside the fan housing 11; the fan body 12 includes an impeller 121 and a central shaft 122, the impeller 121 is sleeved on the outside of the central shaft 122, and a first end of the central shaft 122 is rotatably connected to the first end wall 111, and a second end of the central shaft 122 is rotatably connected to the second end wall 112; The micro motor 13 is disposed outside the fan housing 11 and is connected to a first end of the central shaft 122 to drive the central shaft 122 and the impeller 121 to rotate.

[0027] The cross-flow fan 1 provided in the embodiment of the present application includes a fan housing 11, a fan body 12, and a micromotor 13. The fan housing 11 provides a space for the fan body 12. The arrangement of the fan housing's first end wall 111, second end wall 112, first side wall 113, and second side wall 114 ensures the structural stability of the fan housing 11. The impeller 121 and central shaft 122 in the fan body 12 are the core components for generating airflow. The central shaft 122's ends are respectively mounted to the first end wall 111 and the second end wall 112. The first end of the central shaft 122 is rotatably connected to the first end wall 111, and the second end of the central shaft 122 is rotatably connected to the second end wall 112, thereby enabling smooth rotation of the impeller 121. The micromotor 13 is disposed outside the fan housing 11 and connected to the central shaft 122, providing power for the rotation of the impeller 121. The cross-flow fan 1 has a compact structure, making it easy to install and use in a head-mounted device. It can effectively provide airflow for the head-mounted device, providing heat dissipation or ventilation, thereby improving the user's wearing experience.

[0028] Reference Figure 1 As shown, in one embodiment, the cross-flow fan 1 includes a first bearing 141 and a second bearing 142, the first end wall 111 is provided with a first bearing hole 1110, and the second end wall 112 is provided with a second bearing hole 1120, the first bearing 141 is installed in the first bearing hole 1110, and the second bearing 142 is installed in the second bearing hole 1120, the first end of the central axis 122 is inserted into the first bearing 141, and the second end of the central axis 122 is inserted into the second bearing 142.

[0029] In this specific example, by opening a first bearing hole 1110 in the first end wall 111 and installing a first bearing 141, and opening a second bearing hole 1120 in the second end wall 112 and installing a second bearing 142, the two ends of the central shaft 122 are respectively inserted into the first bearing 141 and the second bearing 142, thereby realizing a rotational connection between the central shaft 122 and the first end wall 111 and the second end wall 112; the setting of the first bearing 141 and the second bearing 142 can greatly reduce the friction force during the rotation of the central shaft 122, reduce energy loss, improve the stability and efficiency of the rotation of the impeller 121, extend the service life of the cross-flow fan 1, and also help to reduce the operating noise of the cross-flow fan 1.

[0030] Reference Figure 1As shown, in one embodiment, the cross-flow fan 1 includes a speed regulating transmission member 15 , and the micro motor 13 is connected to the first end of the central shaft 122 via the speed regulating transmission member 15 .

[0031] In this specific example, the micromotor 13 is connected to the first end of the central axis 122 via the speed-adjusting transmission member 15. The speed-adjusting transmission member 15 allows for flexible adjustment of the speed of the impeller 121 based on the actual needs of the head-mounted device. For example, the airflow rate can be adjusted to meet diverse user needs under different ambient temperatures or usage scenarios, thereby improving the adaptability and functionality of the cross-flow fan 1.

[0032] Reference Figure 1 As shown, in one embodiment, the speed regulating transmission member 15 includes a gear box 151 and a gear set, and the gear set is arranged in the gear box 151; the output shaft of the micro motor 13 extends into the gear box 151 and is connected to the primary gear of the gear set, and the first end of the middle shaft 122 extends into the gear box 151 and is connected to the final gear of the gear set.

[0033] In this specific example, the speed regulating transmission component 15 includes a gear box 151 and a gear set arranged in the gear box 151. The output shaft of the micro motor 13 is connected to the primary gear of the gear set, and the first end of the middle shaft 122 is connected to the final gear. The gear transmission structure can accurately adjust the speed. Through the combination of gears of different sizes, the transmission ratio can be changed to achieve speed adjustment in different ranges, ensuring that the speed of the impeller 121 can accurately match the operating requirements of the head-mounted device, and the gear transmission has the advantages of smooth transmission and high efficiency.

[0034] Reference Figure 1 As shown, in one embodiment, the speed regulating transmission member 15 includes a gear box housing 152 , and the gear box 151 is disposed in the gear box housing 152 .

[0035] In this specific example, the speed regulating transmission component 15 further includes a gearbox housing 152, and the gearbox 151 is disposed within the gearbox housing 152. The gearbox housing 152 provides protection for the gearbox 151 and the gear set therein, preventing external dust, impurities, etc. from entering the gearbox 151 and affecting the normal transmission of the gear set. The gearbox housing 152 also provides a certain degree of fixation and support for the gearbox 151, thereby improving the overall stability and reliability of the speed regulating transmission component 15 and extending its service life.

[0036] Reference Figure 3As shown, in one embodiment, the fan housing 11 includes a limiting panel 117, which is connected to the outer side of the first end wall 111, and the inner surface of the limiting panel 117 has a shape that is compatible with the gear box housing 152. The gear box housing 152 is installed on the inner side of the limiting panel 117, and the gear box housing 152 is at least partially in contact with the inner surface of the limiting panel 117.

[0037] In this specific example, the fan housing 11 includes a limiting panel 117, which is connected to the outside of the first end wall 111. Its inner surface is adapted to fit the gearbox housing 152. The gearbox housing 152 is mounted inside the limiting panel 117 and at least partially engages the inner surface of the limiting panel 117. This allows for precise positioning and securing of the gearbox housing 152, preventing the gearbox 151 from shaking or shifting during operation, ensuring the stability and accuracy of the gear train transmission, and also making the entire cross-flow fan structure more compact, facilitating installation and placement within the head-mounted device.

[0038] It can be understood that the first bearing hole 1110 not only passes through the first end wall 111 , but also passes through the limiting enclosure 117 .

[0039] Reference Figure 1 As shown, in one embodiment, the cross-flow fan 1 includes a cover plate 16, the cover plate 16 is provided with a first axial hole 160, the cover plate 16 is connected to the outer side of the second end wall 112, the second bearing hole 1120 is connected to the first axial hole 160, and the second end of the central axis 122 extends into the first axial hole 160.

[0040] In this specific example, the cross-flow fan 1 includes a cover plate 16, which is connected to the outer side of the second end wall 112, and the second end of the central axis 122 extends into the first axial hole 160 opened in the cover plate 16; thereby providing an additional support point for the second end of the central axis 122, which works together with the second bearing 142 to form a more stable support structure.

[0041] Furthermore, the cover plate 16 is detachably connected to the second end wall 112 via screws 17 . When the central shaft 122 and the second bearing 142 need to be maintained or serviced, the relevant components can be easily accessed by simply removing the cover plate 16 .

[0042] A pressing piece 18 is provided against the end surface of the second bearing 142 to prevent the second bearing 142 from loosening; the pressing piece 18 defines a second axial hole, and the second end of the central shaft 122 extends into the second axial hole and the first axial hole 160 .

[0043] Reference Figure 4As shown, in one embodiment, a positioning groove 1121 is formed on the outer side of the second end wall 112 , and the cover plate 16 is installed in the positioning groove 1121 by fasteners.

[0044] In this specific example, the second end wall 112 has a positioning slot 1121 defined on its exterior, into which the cover plate 16 is mounted using fasteners (screws 17). Positioning slots 1121 provide precise positioning for the cover plate 16, enabling accurate installation on the second end wall 112. This ensures precise connectivity between the second bearing hole 1120 and the first axial hole 160, improving installation efficiency and accuracy. The fastener connection also facilitates installation and removal of the cover plate 16, facilitating subsequent maintenance and repair.

[0045] Reference Figure 3 As shown, in one embodiment, the fan housing 11 further includes a first connecting ear 115 and a second connecting ear 116, wherein the first connecting ear 115 is connected to the first end wall 111, and the second connecting ear 116 is connected to the second end wall 112; The first connecting ear 115 defines a first mounting hole 1150 , and the second connecting ear 116 defines a second mounting hole 1160 . The first mounting hole 1150 and the second mounting hole 1160 are used to insert fasteners to mount the cross-flow fan 1 on the head-mounted device.

[0046] In this specific example, the fan housing 11 further includes a first connecting ear 115 and a second connecting ear 116, which are connected to the first end wall 111 and the second end wall 112, respectively. The connecting ears are provided with mounting holes for inserting fasteners to attach the cross-flow fan 1 to the head-mounted device. This structure provides a convenient installation method, allowing the cross-flow fan 1 to be securely fixed to the head-mounted device, ensuring that it will not loosen or shift during operation, ensuring the normal operation of the cross-flow fan 1, and also facilitating the overall assembly and disassembly of the head-mounted device.

[0047] In addition, the fan housing 11 also has the following structural features: Reference Figures 3 to 5 As shown, in one embodiment, the first end wall 111, the second end wall 112, the first side wall 113 and the second side wall 114 enclose an air inlet 1101 and an air outlet 1102 that are relatively arranged and interconnected; the first side wall 113 is protruding from the first end wall 111 and the second end wall 112 on the side corresponding to the air inlet 1101 to form a first air guide portion 1130; the second side wall 114 is protruding from the first end wall 111 and the second end wall 112 on the side corresponding to the air outlet 1102 to form a second air guide portion 1140.

[0048] In this specific example, the fan housing 11 is in the shape of a long cylinder with openings on both sides; it includes a first end wall 111, a second end wall 112, a first side wall 113 and a second side wall 114, wherein the first end wall 111 and the second end wall 112 are arranged opposite to each other, and the first side wall 113 and the second side wall 114 are arranged opposite to each other; the first end wall 111, the second end wall 112, the first side wall 113 and the second side wall 114 are enclosed to form a accommodating space, and one side of the accommodating space is an air inlet 1101 and the other side is an air outlet 1102; a connecting structure for air flow to pass through is formed from the air inlet 1101 to the air outlet 1102.

[0049] The first side wall 113 is provided on the side corresponding to the air inlet 1101 and protrudes from the first end wall 111 and the second end wall 112, and the protruding structure in the first side wall 113 forms a first guide portion 1130; the second side wall 114 is provided on the side corresponding to the air outlet 1102 and protrudes from the first end wall 111 and the second end wall 112, and the protruding structure in the second side wall 114 forms a second guide portion 1140; the setting of the first guide portion 1130 helps to guide the airflow into the accommodating space, and the setting of the second guide portion 1140 helps to guide the airflow out of the accommodating space, thereby optimizing the effect of airflow entry and exhaust, improving the flow efficiency of the airflow, and thereby improving the working efficiency of the cross-flow fan used in the fan housing 11.

[0050] Reference Figures 3 to 5 As shown, in one embodiment, the cross-sections of the first side wall 113 and the second side wall 114 are both arc-shaped.

[0051] In this specific example, the first side wall 113 and the second side wall 114 are both structures with an arc-shaped cross-section. After the airflow enters the accommodating space from the air inlet 1101, it flows along the inner side surface of the first side wall 113 and the inner side surface of the second side wall 114. Since the inner side surface of the first side wall 113 and the inner side surface of the second side wall 114 are both arc surfaces, the resistance encountered by the airflow during flow can be reduced, allowing the airflow to pass through the fan housing 11 more smoothly, thereby improving the overall performance of the cross-flow fan used in the fan housing 11.

[0052] Reference Figures 3 to 5 As shown, in one embodiment, the cross-section of the first side wall 113 and the cross-section of the second side wall 114 are arc-shaped and distributed on the same circumference.

[0053] In this specific example, the cross-section of the first side wall 113 and the cross-section of the second side wall 114 are both arc-shaped and distributed on the same circumference; this makes the internal space of the fan housing 11 more regular, helps to maintain the stability and uniformity of the airflow in the fan housing 11, reduces the generation of turbulence and noise, and improves the working efficiency of the cross-flow fan.

[0054] Reference Figures 3 to 5 As shown, in one embodiment, the cross-section of the first guide portion 1130 is arc-shaped, and the first side wall 113 extends along its own trajectory on the side corresponding to the air inlet 1101 to form the first guide portion 1130; the cross-section of the second guide portion 1140 is arc-shaped, and the second side wall 114 extends along its own trajectory on the side corresponding to the air outlet 1102 to form the second guide portion 1140.

[0055] In this specific example, the first air guide portion 1130 and the second air guide portion 1140 are structures with an arc-shaped cross-section, and the first air guide portion 1130 and the second air guide portion 1140 are formed by extending along the corresponding side wall's own trajectory; in this way, the manufacturing process of the first air guide portion 1130 and the second air guide portion 1140 is relatively simple, and can enable the airflow to smoothly transition when entering and exhausting the fan housing, reduce energy loss, and improve the efficiency of the cross-flow fan.

[0056] In one embodiment, the cross section of the first drainage portion 1130 is linear, and / or the cross section of the second drainage portion 1140 is linear.

[0057] In this specific example, the cross-section of the first drainage portion 1130 and / or the cross-section of the second drainage portion 1140 is linear. The linear drainage portion is more suitable in certain specific application scenarios, such as when a more compact structure or specific airflow guidance is required.

[0058] Optionally, both the first and second air guide portions 1130, 1140 may have an arcuate cross-section; or both the first and second air guide portions 1130, 1140 may have a linear cross-section; or one of the first and second air guide portions 1130, 1140 may have an arcuate cross-section and the other may have a linear cross-section. The above shape combinations can be selected based on the application scenario, usage requirements, and the device in which the cross-flow fan is used.

[0059] In one embodiment, the angle between the cross section of the first drainage portion 1130 and the vertical direction is -60° to 60°, and / or the angle between the cross section of the second drainage portion 1140 and the vertical direction is -60° to 60°.

[0060] In this specific example, when the cross section of the first drainage portion 1130 is linear, the angle between the cross section of the first drainage portion 1130 and the vertical direction is -60°~60°. For example, the cross section of the first drainage portion 1130 is inclined toward the outside at a positive angle relative to the vertical direction, and is inclined toward the inside at a negative angle.

[0061] Similarly, when the cross section of the second drainage portion 1140 is linear, the angle between the cross section of the second drainage portion 1140 and the vertical direction is -60°~60°. For example, the cross section of the second drainage portion 1140 is inclined toward the outside at a positive angle relative to the vertical direction, and is inclined toward the inside at a negative angle.

[0062] The angle between the cross-section of the first guide portion 1130 and the vertical direction and the angle between the cross-section of the second guide portion 1140 and the vertical direction are set to -60°~60°. This helps to optimize the direction and speed of the airflow, effectively guiding the airflow without causing poor airflow guidance effects or other adverse effects such as airflow turbulence and increased resistance due to excessively large or small angles. This improves the performance of the cross-flow fan in specific application scenarios.

[0063] The angle between the cross section of the first drainage portion 1130 and the vertical direction and the angle between the cross section of the second drainage portion 1140 and the vertical direction can be specifically set according to different airflow requirements.

[0064] In addition, refer to Figure 2 As shown, in one embodiment, the fan body 12 is spaced apart from the first side wall 113 and the second side wall 114 , and a guide groove 1103 is formed between the fan body 12 and the first side wall 113 and the second side wall 114 , and the guide groove 1103 is connected to the air inlet 1101 and the air outlet 1102 .

[0065] In this specific example, the fan body 12 is connected to the first end wall 111 and the second end wall 112, and a guide groove 1103 is formed between the fan body 12 and the first side wall 113 and the second side wall 114; the guide groove 1103 enables the airflow to flow more smoothly in the fan casing, further improving the working efficiency of the cross-flow fan.

[0066] Reference Figure 2 As shown, in one embodiment, the cross-section of the first side wall 113 and the cross-section of the second side wall 114 are arc-shaped and distributed on the same circumference; the cross-section of the guide groove 1103 is also arc-shaped.

[0067] In this specific example, the cross-section of the guide groove 1103 is arc-shaped, which is conducive to ensuring the stability and smoothness of the airflow in the fan housing, reducing the generation of turbulence and noise, and improving the working efficiency of the cross-flow fan.

[0068] According to another embodiment of the present application, a head-mounted device is provided, comprising the cross-flow fan 1 as described above.

[0069] The head-mounted device provided in the embodiment of the present application, due to its inclusion of the cross-flow fan 1, has excellent heat dissipation and ventilation functions. The cross-flow fan 1 can provide appropriate airflow based on the operating state of the head-mounted device and user needs, thereby improving the temperature environment inside the head-mounted device, enhancing user wearing comfort, extending the service life of the head-mounted device, and enhancing the overall performance and user experience of the head-mounted device.

[0070] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A cross-flow fan, characterized in that: The cross-flow fan (1) is applied to a head-mounted device, and the cross-flow fan (1) comprises: A fan housing (11), the fan housing (11) comprising a first end wall (111) and a second end wall (112) arranged opposite to each other, and a first side wall (113) and a second side wall (114) arranged opposite to each other; the first end wall (111) is connected to the first side wall (113) and the second side wall (114); the second end wall (112) is connected to the first side wall (113) and the second side wall (114); A fan body (12), the fan body (12) being arranged inside the fan housing (11); the fan body (12) comprising an impeller (121) and a central shaft (122); the impeller (121) being sleeved on the outside of the central shaft (122); a first end of the central shaft (122) being rotatably connected to the first end wall (111); and a second end of the central shaft (122) being rotatably connected to the second end wall (112); A micro motor (13) is provided outside the fan housing (11), and the micro motor (13) is connected to the first end of the central shaft (122) to drive the central shaft (122) and the impeller (121) to rotate.

2. The cross-flow fan according to claim 1, wherein The cross-flow fan (1) comprises a first bearing (141) and a second bearing (142); the first end wall (111) is provided with a first bearing hole (1110); the second end wall (112) is provided with a second bearing hole (1120); the first bearing (141) is mounted in the first bearing hole (1110); the second bearing (142) is mounted in the second bearing hole (1120); the first end of the central shaft (122) is plugged into the first bearing (141); and the second end of the central shaft (122) is plugged into the second bearing (142).

3. The cross-flow fan according to claim 2, wherein: The cross-flow fan (1) comprises a speed regulating transmission component (15), and the micro motor (13) is connected to the first end of the central shaft (122) via the speed regulating transmission component (15).

4. The cross-flow fan according to claim 3, wherein The speed regulating transmission member (15) comprises a gear box (151) and a gear set, wherein the gear set is arranged in the gear box (151); the output shaft of the micro motor (13) extends into the gear box (151) and is connected to the primary gear of the gear set, and the first end of the central shaft (122) extends into the gear box (151) and is connected to the final gear of the gear set.

5. The cross-flow fan according to claim 4, wherein: The speed regulating transmission component (15) comprises a gear box housing (152), and the gear box (151) is arranged in the gear box housing (152).

6. The cross-flow fan according to claim 5, wherein: The fan housing (11) includes a limiting panel (117), the limiting panel (117) is connected to the outside of the first end wall (111), the inner surface of the limiting panel (117) has a shape that matches the gear box housing (152), the gear box housing (152) is installed on the inner side of the limiting panel (117), and the gear box housing (152) is at least partially in contact with the inner surface of the limiting panel (117).

7. The cross-flow fan according to claim 2, wherein: The cross-flow fan (1) comprises a cover plate (16), the cover plate (16) is provided with a first axial hole (160), the cover plate (16) is connected to the outer side of the second end wall (112), the second bearing hole (1120) is communicated with the first axial hole (160), and the second end of the central shaft (122) extends into the first axial hole (160).

8. The cross-flow fan according to claim 7, wherein: The second end wall (112) is provided with a positioning groove (1121) on its outer side, and the cover plate (16) is mounted in the positioning groove (1121) via a fastener.

9. The cross-flow fan according to any one of claims 1 to 8, characterized in that: The fan housing (11) further comprises a first connecting ear (115) and a second connecting ear (116), wherein the first connecting ear (115) is connected to the first end wall (111), and the second connecting ear (116) is connected to the second end wall (112); The first connecting ear (115) is provided with a first mounting hole (1150), and the second connecting ear (116) is provided with a second mounting hole (1160); the first mounting hole (1150) and the second mounting hole (1160) are used to insert fasteners to mount the cross-flow fan (1) on the head-mounted device.

10. A head-mounted device, characterized in that: The head-mounted device comprises a cross-flow fan (1) according to any one of claims 1 to 9.

Images