Handheld fan mounting shell

Abstract

The utility model relates to a handheld fan mounting shell, and relates to the technical field of fans, the handheld fan mounting shell comprises a front cover and a rear cover, the front cover and the rear cover define a containing cavity to contain a fan blade assembly, the containing cavity comprises a first cavity body and a second cavity body, the first cavity body is integrally formed by the front cover in a surrounding mode, and the second cavity body is integrally formed by the rear cover in a surrounding mode. The front cover is provided with an air outlet, the rear cover is provided with an air inlet, and both communicate with the containing cavity. The air outlet is provided with flow guide blades and an installation piece to install the fan blade assembly, a specific air outlet channel is formed, and the air outlet channel comprises a first air guide part with the radial width gradually reduced, a second air guide part with the radial width gradually reduced and a third air guide part with the radial width firstly reduced and then kept equal in width. The shell structure is simplified, the complexity of the assembly process is reduced, after all the assemblies are assembled, the air outlet channel can be integrally formed, air flow can be effectively guided, air flow distribution can be optimized, and the air outlet effect can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a mounting shell for a handheld fan. Background Art

[0002] Handheld fans are popular among consumers due to their portability and immediacy. However, traditional handheld fans have certain structural defects, especially in terms of the efficiency and effect of wind flow guidance. Conventional fan housing designs fail to fully design the air duct structure, often resulting in uneven wind speed at the air outlet and dispersed wind force, thus affecting the overall performance of the fan.

[0003] Currently, this type of fan products must ensure the shape of the air duct while taking into account the product appearance, so the air duct components are disassembled individually, which results in a large number of product shell parts and a more complicated product assembly production process.

[0004] Therefore, based on the above problems, the prior art needs to be improved. Utility Model Content

[0005] The purpose of this application is to simplify the shell structure and reduce the complexity of the assembly process. After the components are assembled, an air outlet duct can be formed in one piece, which can not only effectively guide the wind flow, but also optimize the wind flow distribution and improve the wind outlet effect.

[0006] The above technical objectives of the present application are achieved through the following technical solutions: a handheld fan installation shell, comprising a front cover and a rear cover, wherein the front cover and the rear cover are combined to form a receiving cavity for receiving a fan blade assembly, wherein the receiving cavity comprises a first cavity and a second cavity, wherein the first cavity is formed by the front cover being integrally formed, and the second cavity is formed by the rear cover being integrally formed; an air outlet is provided on the front cover, wherein the air outlet is connected to the receiving cavity; an air inlet is provided on the rear cover, wherein the air inlet is connected to the receiving cavity; and a first air outlet is provided at the air outlet. There are guide blades, and mounting parts are provided on the guide blades for mounting the fan blade assembly; an air outlet duct is formed between the hub surface of the fan blade assembly, the outer surface of the mounting part and the wall of the accommodating chamber, and the air outlet duct includes a first air guide part, a second air guide part and a third air guide part, and along the direction from the air inlet to the air outlet, the radial width of the air outlet duct corresponding to the first air guide part gradually decreases, the radial width of the air outlet duct corresponding to the second air guide part gradually decreases, and the radial width of the air outlet duct corresponding to the third air guide part first decreases and then maintains the same width.

[0007] By adopting the above technical solution, the unique segmented design of the air outlet duct, including the first air guide part and the second air guide part with gradually decreasing width, and the third air guide part that first decreases and then maintains the same width, can effectively guide and control the airflow, so that the wind blown out by the fan is more concentrated, strong and stable. The air duct structure helps to improve the air outlet efficiency of the fan and reduce energy loss. The reasonable setting of the air inlet and outlet, as well as the conduction with the accommodating cavity, ensure that the air can smoothly enter and exit the fan, and improve the ventilation performance of the fan. The front cover and the rear cover are respectively integrally formed to enclose different chambers, which enhances the structural strength and stability of the entire installation shell. The relatively independent and clearly divided front cover and rear cover structures, as well as the chambers formed separately, simplify the assembly process of the fan and reduce the production cost. The front cover and the rear cover can be integrally formed with an air outlet duct during assembly, which can not only effectively guide the wind flow, but also optimize the wind flow distribution and improve the wind outlet effect. The fan blades and mounting parts of the fan blade assembly have a certain gap, and the heat generated by the motor in the fitting groove can be dissipated more quickly through the gap, thereby extending the service life of the electronic components and reducing the risk of failure due to overheating.

[0008] Optionally, a first groove is formed inwardly on the front cover, and a second groove is formed inwardly on the rear cover, and the first groove and the second groove are combined to form a cavity.

[0009] By adopting the above technical solution, through the setting of the cavity, the cavity setting can reduce the wall thickness of the product and make the wall thickness of the product shell uniform, reduce the internal stress concentration, reduce the possibility of problems such as lack of glue and shrinkage, and improve the molding quality of the shell. The existence of the cavity reduces the use of overall materials, thereby reducing the weight of the handheld fan, making it easier for users to carry and use. The cavity can be filled with noise absorbing materials or sound insulation materials to absorb and disperse the noise generated by the operation of the fan, thereby improving the user experience.

[0010] Optionally, the cavity ring is arranged around the accommodating cavity.

[0011] By adopting the above technical solution, through the setting of the cavity, the cavity setting can reduce the wall thickness of the product and make the wall thickness of the product shell uniform, reduce the internal stress concentration, reduce the possibility of problems such as lack of glue and shrinkage, and improve the molding quality of the shell. The existence of the cavity reduces the use of overall materials, thereby reducing the weight of the handheld fan, making it easier for users to carry and use. The cavity can be filled with noise absorbing materials or sound insulation materials to absorb and disperse the noise generated by the operation of the fan, thereby improving the user experience.

[0012] Optionally, a third groove is formed inwardly on one side of the back cover close to the air inlet.

[0013] By adopting the above technical solution, the third groove can reduce the wall thickness of the product and make the wall thickness of the product shell uniform, reduce internal stress concentration, reduce the possibility of problems such as lack of glue and shrinkage, and improve the molding quality of the shell. At the same time, the weight of the handheld fan is reduced, making it easier for users to carry and use.

[0014] Optionally, a plurality of positioning blocks are provided in the third groove, the positioning blocks are evenly spaced along the air inlet, and a protective net is provided on the positioning blocks.

[0015] By adopting the above technical solution, the protective net set on the positioning block can effectively prevent harm to users and products due to inhalation of foreign objects or accidental touch. The setting of the positioning block increases the structural strength of the third groove, making the whole more stable and able to withstand certain external force impact without being easily deformed. The evenly arranged positioning blocks provide accurate positioning for the installation of the protective net, ensuring that the protective net is installed firmly and flatly.

[0016] Optionally, a mounting cover is provided on the back cover, and the mounting cover is arranged at the notch of the third groove, and the positioning block and the mounting cover cooperate to clamp the protective net.

[0017] By adopting the above technical solution, the cooperation between the mounting cover and the positioning block can firmly clamp the protective net from both sides, so that it will not loosen or fall off during use, ensuring that it always plays a protective role. The replacement of the protective net becomes simple and quick. When the protective net is damaged or needs to be cleaned, the mounting cover can be easily removed and the protective net can be taken out for disposal. The protective net is clamped to avoid noise caused by the vibration of the protective net when the product is working.

[0018] Optionally, the back cover is provided with a first clamping piece, and the mounting cover is provided with a second clamping piece, and the first clamping piece and the second clamping piece are engaged with each other.

[0019] By adopting the above technical solution, the cooperation of the first clamping member and the second clamping member enables the installation cover to be quickly and conveniently installed on the rear cover without using complicated tools and cumbersome steps. At the same time, it is also convenient to quickly disassemble when necessary, such as cleaning or repairing internal components. The clamping structure can provide a reliable connection, ensuring that the installation cover will not accidentally fall off during use, thereby ensuring the normal operation and safe use of the fan.

[0020] Optionally, the mounting piece is provided with an engaging groove for engaging and mounting the display screen assembly.

[0021] By adopting the above technical solution, the display screen assembly is installed in the fitting groove of the front cover through the fitting groove, which realizes the integration of the structure and makes the whole handheld fan more compact and beautiful. The fitting groove can provide a stable installation position for the display screen assembly, reduce the shaking and loosening of the display screen assembly during use, and ensure the stability of the display effect. The fitting groove installed inside can provide a certain protection for the display screen assembly and reduce the risk of external impact and scratches. The concave fitting groove design does not increase the volume of the front cover, effectively utilizes the internal space of the front cover, and makes the overall size of the handheld fan more reasonable. The installation of the display screen assembly can provide users with more information, such as wind speed, power, etc., which is convenient for users to understand the working status of the fan and improve the user experience.

[0022] Optionally, a protective cover is provided at the notch of the fitting groove, and the protective cover is made of a light-transmitting material.

[0023] By adopting the above technical solution, the protective cover can effectively prevent dust, water vapor and other impurities from entering the fitting groove, play a good protective role on the display screen assembly, and extend the service life of the display screen assembly. Reduce the risk of scratches or wear on the surface of the display screen assembly, and maintain the clarity and display effect of the display screen assembly. It helps to improve the overall sealing of the fitting groove and further prevent the influence of external factors on the display screen assembly. The protective cover can make the appearance of the entire back cover more complete and beautiful, and enhance the overall texture of the product.

[0024] In summary, this application has at least the following beneficial effects:

[0025] 1. This application simplifies the product structure design by assembling the shell into an integrated form with an air outlet duct, ensures the injection molding effect of the product, and reduces the complexity of the product assembly production process. The air outlet duct effectively guides the wind flow, optimizes the wind flow distribution and improves the wind outlet effect, while reducing the product weight and optimizing the noise during product operation, improving the product user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a handheld fan mounting housing;

[0027] Figure 2 It is a structural schematic diagram of the air outlet duct;

[0028] Figure 3 is a schematic diagram of the structure of the cavity;

[0029] Figure 4 It is a schematic diagram of the structure of the back cover;

[0030] Figure 5 is a schematic diagram of the structure of the installation cover;

[0031] Figure 6 is a schematic diagram of the structure of the second groove;

[0032] Figure 7 It is a schematic diagram of the structure of the front cover;

[0033] Figure 8 It is a schematic diagram of the position of the fitting groove;

[0034] Fig. 9 It is a schematic diagram of the location of the first chamber.

[0035] Reference numerals

[0036] 1. Front cover; 2. Back cover; 3. Accommodating cavity; 31. First cavity; 32. Second cavity; 4. Air outlet; 5. Air inlet; 6. Guide blade; 7. Mounting piece; 71. Outer surface; 8. Fan blade assembly; 81. Hub surface; 9. Air outlet duct; 91. First air guide part; 92. Second air guide part; 93. Third air guide part; 10. Cavity; 101. First groove; 102. Second groove; 11. Third groove; 12. Positioning block; 13. Protective net; 14. Mounting cover; 15. First clip; 16. Second clip; 17. Fitting groove; 18. Display screen assembly; 19. Protective cover. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings.

[0038] In this embodiment, refer to Figure 1-9A handheld fan installation shell includes a front cover 1 and a rear cover 2. The front cover 1 and the rear cover 2 can be spliced ​​by snap fit or ultrasonic welding. The front cover 1 and the rear cover 2 are enclosed to form a accommodating chamber 3. The accommodating chamber 3 is designed to accommodate a fan blade assembly 8. The accommodating chamber 3 includes a first chamber 31 and a second chamber 32. The first chamber 31 is formed by the front cover 1 in one piece, and the second chamber 32 is formed by the rear cover 2 in one piece. An air outlet 4 is provided on the front cover 1, and the air outlet 4 and the accommodating chamber 3 are interconnected. Correspondingly, an air inlet 5 is provided on the rear cover 2, and the air inlet 5 is also connected to the accommodating chamber 3. At the position of the air outlet 4, guide blades 6 are arranged, and these guide blades 6 are also equipped with mounting parts 7 to install the fan blade assembly 8. An air outlet duct 9 is formed between the hub surface 81 of the fan blade assembly 8 and the outer surface 71 of the mounting part 7 and the cavity wall of the accommodating chamber 3. The air outlet duct 9 includes a first air guide portion 91, a second air guide portion 92 and a third air guide portion 93. Along the direction from the air inlet 5 to the air outlet 4, the radial width of the air outlet duct 9 corresponding to the first air guide portion 91 gradually decreases, the radial width of the air outlet duct 9 corresponding to the second air guide portion 92 gradually decreases, and the radial width of the air outlet duct 9 corresponding to the third air guide portion 93 first decreases and then remains the same width. Such a design can more effectively concentrate and guide the wind flow to improve the efficiency of the fan blade assembly 8.

[0039] The implementation principle of Example 1 is as follows: when the fan blade assembly 8 is working, air enters from the air inlet 5 of the rear cover 2, flows through the accommodating cavity 3, is sucked in by the fan blade assembly 8, and is accelerated by the guide blades 6 before being discharged from the air outlet 4. In this process, the specific design of the air outlet duct 9 makes the wind speed gradually increase when the wind flows through the first air guide portion 91 and the second air guide portion, and when the wind flows through the third air guide portion 93, the wind flow remains uniform and high speed, thereby forming a stable and concentrated wind output at the air outlet 4, improving the user experience of the product.

[0040] Example 2

[0041] Reference Figure 3 The difference of this embodiment is that the front cover 1 is provided with a first groove 101, and the rear cover 2 is also provided with a second groove 102. When the two grooves are combined together, they will form a cavity 10. When the front cover 1 or the rear cover 2 is injection molded, if the plastic shell wall thickness is large, poor injection molding is likely to occur. The first groove 101 and the second groove 102 are provided to improve the injection molding effect. At the same time, the weight of the shell can be effectively reduced while ensuring the structural strength, making it more in line with the requirements of lightness of handheld devices.

[0042] Example 3

[0043] Reference Figure 3On the basis of Example 2, the further improvement of this embodiment is that the cavity 10 is arranged around the accommodating cavity 3. Through the arrangement of the cavity, the cavity arrangement can reduce the wall thickness of the product and make the wall thickness of the product shell uniform, reduce the concentration of internal stress, reduce the possibility of problems such as lack of glue and shrinkage, and improve the molding quality of the shell. The existence of the cavity reduces the use of overall materials, thereby reducing the weight of the handheld fan, making it convenient for users to carry and use. The cavity can be filled with noise absorbing materials or sound insulation materials to absorb and disperse the noise generated by the operation of the fan, thereby improving the user experience.

[0044] Example 4

[0045] Compared with the above embodiment, Figure 2-4 In this embodiment, a third concave groove 11 is added on one side of the back cover 2 near the air inlet 5. The third groove 11 can reduce the wall thickness of the back cover 2, improve the injection molding effect, and effectively reduce the weight of the shell while ensuring the structural strength, making it more in line with the requirements of lightweight handheld devices.

[0046] Example 5

[0047] Based on Example 4, Figure 4 In this embodiment, several positioning blocks 12 are arranged in the third groove 11. These positioning blocks 12 are evenly spaced along the air inlet 5, and a plurality of positioning blocks 12 are provided with a protective net 13 to maintain the installation stability of the protective net 13. By providing the protective net 13 at the air inlet 5, it is possible to effectively prevent external objects from accidentally entering the interior of the fan blade assembly 8, causing damage or malfunction, and prevent the user from directly touching the fan blade assembly 8 in the accommodating chamber 3, causing the possibility of injury. The hole types of the protective net 13 include but are not limited to honeycomb type and radiation type. The honeycomb type holes can provide relatively uniform protection, effectively prevent foreign objects from entering the interior of the fan, and at the same time maintain good ventilation performance. Due to the dense arrangement of the holes, there is a better blocking effect for smaller objects, such as children's fingers, which increases the safety of use. The radiation type has a strong visual impact and a unique aesthetic. In terms of ventilation effect, targeted airflow guidance can be achieved according to the direction of radiation.

[0048] Example 6

[0049] The improvement of this embodiment is that, referring to 3-5, a mounting cover 14 is added to the rear cover 2, and the mounting cover 14 is exactly set at the notch position of the third groove 11. In this way, the positioning block 12 and the mounting cover 14 can fit closely, so as to firmly clamp the protective net 13 and ensure that it always remains stable during use. At the same time, the mounting cover 14 is used to block the notch of the third groove 11 to form a closed chamber, and functional modules can be added in the chamber to enhance the diversified functions of the fan blade assembly 8. The outer surface of the mounting cover 14 is a contraction-shaped air duct wall that forms the first air guide part 91. The curvature of the contraction-shaped air duct wall and the air duct wall of the first air guide part away from the mounting cover 14 are in a smooth transition, ensuring the smoothness of the airflow before and after the protective net 13 flows, and avoiding the generation of turbulence.

[0050] Example 7

[0051] In order to further enhance the fixing effect of the mounting cover 14, refer to Figure 4-6 In this embodiment, a first clamping member 15 is added to the rear cover 2, and a second clamping member 16 is correspondingly provided on the mounting cover 14. When the two are engaged with each other, the connection stability between the mounting cover 14 and the rear cover 2 can be significantly improved. The mounting cover 14 is detachably mounted on the rear cover 2, which facilitates the removal of the protection net 13 and the maintenance of the components inside the accommodating cavity 3.

[0052] Example 8

[0053] Compared with the above-mentioned embodiment, Figure 7-8 In this embodiment, a recessed engaging groove 17 is provided on the mounting member 7, and the engaging groove 17 is designed to engage and install the display screen assembly 18. By integrating the display screen assembly 18, the fan blade assembly 8 can display information such as temperature, wind speed and power in real time, providing users with more convenience and interactivity. In addition to installing the display screen assembly 18, other electronic devices, such as lighting lamps, liquid atomizers, etc., can also be installed in the engaging groove 17.

[0054] Example 9

[0055] Based on Example 8, Figure 8 In this embodiment, a protective cover 19 is added at the notch position of the fitting groove 17. The protective cover 19 is made of a light-transmissive material, so it can effectively protect the display screen assembly 18 from external damage while not affecting the user's normal viewing of the displayed information.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes or replacements made based on the structure, shape or principle of the present application should be deemed to be included in the protection scope of the present application.

Claims

1. A handheld fan mounting housing, characterized in that: The invention comprises a front cover (1) and a rear cover (2), wherein the front cover (1) and the rear cover (2) are combined to form a receiving chamber (3) for receiving a fan blade assembly (8), wherein the receiving chamber (3) comprises a first chamber (31) and a second chamber (32), wherein the first chamber (31) is formed by the front cover (1) being integrally formed and formed, and the second chamber (32) is formed by the rear cover (2) being integrally formed and formed; an air outlet (4) is provided on the front cover (1), wherein the air outlet (4) and the receiving chamber (3) are in communication, and an air inlet (5) is provided on the rear cover (2), wherein the air inlet (5) and the receiving chamber (3) are in communication, and a guide vane (6) is provided at the air outlet (4), wherein the guide vane (6) is provided with a There is a mounting member (7) for mounting a fan blade assembly (8); an air outlet duct (9) is formed between a hub surface (81) of the fan blade assembly (8), an outer surface (71) of the mounting member (7) and a cavity wall of the accommodating cavity (3); the air outlet duct (9) comprises a first air guide portion (91), a second air guide portion (92) and a third air guide portion (93); along the direction from the air inlet (5) to the air outlet (4), the radial width of the air outlet duct (9) corresponding to the first air guide portion (91) gradually decreases, the radial width of the air outlet duct (9) corresponding to the second air guide portion (92) gradually decreases, and the radial width of the air outlet duct (9) corresponding to the third air guide portion (93) first decreases and then remains the same width.

2. A handheld fan mounting housing according to claim 1, characterized in that: The front cover (1) is provided with a first groove (101) inwardly, and the rear cover (2) is provided with a second groove (102) inwardly, and the first groove (101) and the second groove (102) are combined to form a cavity (10) by splicing the front cover (1) and the rear cover (2).

3. A handheld fan mounting housing according to claim 2, characterized in that: The cavity (10) is arranged around the accommodating cavity (3).

4. A handheld fan mounting housing according to claim 1, characterized in that: A third groove (11) is formed inwardly on one side of the rear cover (2) close to the air inlet (5).

5. A handheld fan mounting housing according to claim 4, characterized in that: A plurality of positioning blocks (12) are arranged in the third groove (11); the positioning blocks (12) are arranged at even intervals along the air inlet (5); and a protective net (13) is provided on the positioning blocks (12).

6. A handheld fan mounting housing according to claim 5, characterized in that: The rear cover (2) is provided with a mounting cover (14), the mounting cover (14) being arranged at the notch of the third groove (11), and the positioning block (12) and the mounting cover (14) cooperate to clamp the protective net (13).

7. A handheld fan mounting housing according to claim 6, characterized in that: The rear cover (2) is provided with a first clamping piece (15), the mounting cover (14) is provided with a second clamping piece (16), and the first clamping piece (15) and the second clamping piece (16) are matched and clamped.

8. The handheld fan mounting housing according to claim 1, characterized in that: The mounting member (7) is provided with an engaging groove (17) for engaging and mounting a display screen assembly (18).

9. A handheld fan mounting housing according to claim 8, characterized in that: A protective cover (19) is provided at the notch of the engaging groove (17), and the protective cover (19) is made of a light-transmissive material.

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