Quick disassembly type cooling fan

Abstract

The utility model discloses a quick disassembly type cooling fan, and relates to the technical field of cooling fans. The fan comprises a fan frame and a fan head, a mounting cavity is formed in the fan frame, a support part is arranged at the position, located at the bottom of the mounting cavity, of the fan frame, a positioning groove is formed in the center of the support part, and a second connector is arranged on the positioning groove; the fan head comprises a base, a motor assembly, a wheel fan and a PCB. The base is detachably mounted in the positioning groove; the motor assembly is mounted on the base; the wheel fan is arranged in the mounting cavity and mounted on the base, and the wheel fan is in driving connection with the motor assembly; the PCB is arranged between the motor assembly and the base, the PCB is electrically connected with the motor assembly, a first connector detachably connected with the second connector is exposed on the lower end face of the PCB, and the first connector is electrically connected with the second connector. By the adoption of the technical scheme, the fan head can be completely detached from the fan frame, and maintenance and cleaning are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling fans, and particularly relates to a quick-disassembly cooling fan. Background Art

[0002] Cooling fans are widely used in electronic products to dissipate heat from the electronic products.

[0003] Currently, the cooling fans on the market generally include a fan frame, a PCB board installed in the fan frame, and a fan head. The fan head includes a base, a motor assembly, and a wheel fan. The wheel fan is installed on the base through the motor assembly, and the motor assembly is electrically connected to the PCB board. When assembling and using, it is necessary to align the base with the fan frame and then fix them with screws, so as to fix the fan head in the fan frame. And the external power cord passes through the fan frame and is electrically connected to the PCB board through welding.

[0004] The above assembly method has the following problems. First, when installing the fan head on the fan frame, tools are needed to lock the screws. When maintaining and cleaning the dust, tools are needed to unscrew the screws, and then pull out the power cord to separate the fan head from the fan frame. The assembly and disassembly between the fan frame and the fan head are complex. Second, when the fan head is disassembled from the fan frame, the power cord will also restrict the fan head, which is not conducive to the maintenance and cleaning of the fan head. Summary of the Utility Model

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a quick-disassembly cooling fan, which has the advantage of being able to completely disassemble the fan head from the fan frame, facilitating maintenance and cleaning.

[0006] To achieve the above object, the technical solution adopted by the utility model is: a quick-disassembly cooling fan, including a fan frame and a fan head; an installation cavity is provided on the fan frame, a support part is provided at the bottom of the fan frame in the installation cavity, a positioning groove is provided in the center of the support part, and a second connector is provided on the positioning groove; the fan head includes a base, a motor assembly, a wheel fan and a PCB board; the base is detachably installed in the positioning groove; the motor assembly is installed on the base; the wheel fan is arranged in the installation cavity and installed on the base, and the wheel fan is drivingly connected to the motor assembly; the PCB board is arranged between the motor assembly and the base, the PCB board is electrically connected to the motor assembly, a first connector detachably connected to the second connector is exposed on the lower end surface of the PCB board, and the first connector is electrically connected to the second connector.

[0007] Optionally, the wheel fan includes a hub, a rotating shaft, and fan blades. The fan blades are disposed outside the hub, the rotating shaft is disposed inside the hub, several first magnets are embedded in the positioning groove, and the base includes a magnetic fixing plate and a cylinder; the magnetic fixing plate is disposed in the positioning groove and magnetically fixed to the first magnets; one end of the cylinder is integrally provided in the middle of the magnetic fixing plate, the PCB board and the motor assembly are both sleeved outside the cylinder, the hub is sleeved outside the motor assembly, and the rotating shaft is installed in the cylinder through a bearing.

[0008] Optionally, several first limiting posts are spacedly arranged on the inner side wall of the positioning groove, and several first limiting notches adapted to the first limiting posts are provided on the outer side wall of the base.

[0009] Optionally, a first wiring groove communicating with the positioning groove is provided on the support portion, a first cable is disposed in the first wiring groove, one end of the first cable is electrically connected to the second connector, and the other end extends outside the fan frame.

[0010] Optionally, at least two mounting cavities are provided on each fan frame, a fan head is installed in each mounting cavity, two adjacent fan heads are connected in series, a second connector is provided on the support portion of one of the mounting cavities, two second connectors are provided on the support portions of the remaining mounting cavities, a second wiring groove is provided on the fan frame and on the support portions of two adjacent mounting cavities, and a second cable is disposed in the second wiring groove, and both ends of the second cable are connected with second connectors.

[0011] Optionally, a mounting position and mounting holes are provided on the upper surface of the fan frame, and the mounting holes are for bolts to pass through.

[0012] Optionally, the fan frame is rectangular, there are four mounting positions, the four mounting positions are respectively disposed at the four corners of the upper surface of the fan frame, there are four mounting holes, and the four mounting holes penetrate through the four mounting positions.

[0013] Optionally, the first connector is a contact connector, and the second connector is a pin connector or a reed type connector.

[0014] Optionally, a plurality of air inlets are provided on the support portion outside the positioning groove.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: 1. A quick-release heat dissipation fan includes a fan frame and a fan head. An installation cavity is provided on the fan frame. A support portion is provided at the bottom of the installation cavity of the fan frame. A positioning groove is provided in the center of the support portion, and a second connector is provided on the positioning groove. The fan head includes a base, a motor assembly, a wheel fan, and a PCB board. The base is detachably installed in the positioning groove. The base can be detachably connected to the fan frame through a detachable structure such as a buckle or a magnetic attraction structure. The motor assembly is installed on the base. The wheel fan is arranged in the installation cavity and installed on the base, and the wheel fan is drivingly connected to the motor assembly. The PCB board is arranged between the motor assembly and the base. The PCB board is electrically connected to the motor assembly. The lower end face of the PCB board is exposed with a first connector that is detachably connected to the second connector. The first connector is electrically connected to the second connector. By detachably connecting the base of the fan head to the positioning groove of the fan frame, the fan head can be completely detached from the fan frame, facilitating maintenance and cleaning; the first connector of the fan head is detachably connected to the second connector of the fan frame, and the first connector can be in contact with the second connector for conduction, avoiding the restriction of the cables in the fan frame on the fan head.

[0016] 2. A plurality of first magnets are embedded in the positioning groove. The base includes a magnetic fixing plate and a cylinder. The magnetic fixing plate is made of rubber magnet or magnetic metal. The magnetic fixing plate is arranged in the positioning groove and magnetically fixed to the first magnets. During assembly, the first connector of the fan head can be aligned with the second connector on the fan frame. The setting of the magnetic fixing plate and the first magnets makes the fan head magnetically fixed, making the connection between the first connector and the second connector more stable and facilitating assembly; when it is necessary to detach the fan head from the fan frame, the fan head can be directly held and pulled out relative to the fan frame to detach the fan head relative to the fan frame, achieving the effect of quick release. At the same time, it is convenient for users to replace the fan head with different fan blades according to needs to meet different requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of the heat dissipation fan of the present utility model;

[0019] Figure 2 is a schematic structural diagram of a fan head detached from the fan frame;

[0020] Figure 3 is a schematic structural diagram of a fan head detached from the fan frame in another direction;

[0021] Figure 4 It is an exploded view after a fan head of the cooling fan is removed from the fan frame;

[0022] Figure 5 It is an exploded view in another direction after a fan head of the cooling fan is removed from the fan frame;

[0023] Figure 6 It is a cross-sectional view of the cooling fan;

[0024] Figure 7 is Figure 5 an enlarged view of A in

[0025] Figure 8 It is a structural diagram of two fan heads removed from the fan frame.

[0026] Explanation of reference numerals: 100, fan frame; 101, installation cavity; 102, installation position; 103, installation hole; 110, bracket part; 111, positioning groove; 112, first limiting post; 113, air inlet; 114, second limiting notch; 120, second connector; 130, first magnet; 140, first cable; 150, second cable; 200, fan head; 210, base; 211, magnetic fixing plate; 2111, positioning hole; 2112, avoiding notch; 2113, first limiting notch; 2114, second limiting post; 212, cylinder; 220, motor assembly; 221, silicon steel sheet; 222, winding sleeve; 2221, upper winding sleeve; 2222, lower winding sleeve; 2223, positioning post; 223, magnet ring; 224, magnetic seal ring; 230, wheel fan; 231, hub; 232, rotating shaft; 233, fan blade; 234, bearing; 240, PCB board; 250, first insulating sheet; 260, second insulating sheet; 270, first connector. Detailed implementation manners

[0027] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0028] This specific embodiment is only an explanation of the present utility model, and it is not a limitation to the present utility model. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0029] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of some utility models, "a plurality of" means two or more, unless otherwise specifically defined.

[0032] This embodiment relates to a quick-release heat dissipation fan, such as Figure 1-8As shown in the figure, it includes a fan frame 100 and a fan head 200. An installation cavity 101 is provided on the fan frame 100. A support part 110 is provided at the bottom of the installation cavity 101 of the fan frame 100. A positioning groove 111 is provided in the center of the support part 110. A plurality of air inlets 113 are provided outside the positioning groove 111 of the support part 110. A second connector 120 is provided on the positioning groove 111. The fan head 200 includes a base 210, a motor assembly 220, a wheel fan 230 and a PCB board 240. The base 210 is detachably installed in the positioning groove 111. The base 210 can be detachably connected to the fan frame 100 through a detachable structure such as a buckle or a magnetic attraction structure. The motor assembly 220 is installed on the base 210. The wheel fan 230 is arranged in the installation cavity 101 and installed on the base 210. The wheel fan 230 is drivingly connected to the motor assembly 220. The PCB board 240 is arranged between the motor assembly 220 and the base 210. The PCB board 240 is electrically connected to the motor assembly 220. A first connector 270 detachably connected to the second connector 120 is exposed on the lower end surface of the PCB board 240. The first connector 270 is electrically connected to the second connector 120. In this embodiment, an avoidance notch 2112 is provided on the base 210 and below the first connector 270, so that the first connector 270 is exposed. The second connector 120 is connected to the first connector 270 through the avoidance notch 2112. The motor assembly 220 includes a silicon steel sheet 221, a winding sleeve 222, a magnet ring 223 and a magnetic seal ring 224. The winding sleeve 222 is composed of an upper winding sleeve 2221 and a lower winding sleeve 2222. Both the upper winding sleeve 2221 and the lower winding sleeve 2222 are sleeved outside the cylinder 212. The winding sleeve 222 is made of plastic material. A plurality of silicon steel sheets 221 are stacked. The silicon steel sheets 221 are arranged between the upper winding sleeve 2221 and the lower winding sleeve 2222. The magnet ring 223 is arranged on the inner side wall of the wheel fan 230 and sleeved outside the winding sleeve 222. The magnetic seal ring 224 is arranged between the magnet ring 223 and the inner side wall of the wheel fan 230. The magnetic seal ring 224 is made of a metal material such as iron or stainless steel. In some embodiments, in order to enhance the atmosphere, color light beads are provided on the upper surface of the PCB board 240 near the edge. In some embodiments, a light-emitting strip electrically connected to the first cable 140 is provided on the outer surface of the fan frame 100.

[0033] It should be noted that the base 210 of the fan head 200 is detachably connected to the positioning groove 111 of the fan frame 100, and the first connector 270 of the fan head 200 is detachably connected to the second connector 120 of the fan frame 100. The first connector 270 can be in contact with the second connector 120 for conduction, so that the fan head 200 can be completely detached from the fan frame 100 for easy maintenance and cleaning.

[0034] Furthermore, as Figure 3-5As shown, an avoidance notch 2112 is provided on the base 210, and the first connector 270 is exposed through the avoidance notch 2112 to facilitate the connection between the second connector 120 and the first connector 270.

[0035] Optionally, as Figure 3-6 shown, the wheel fan 230 includes a hub 231, a rotating shaft 232 and fan blades 233. The fan blades 233 are arranged outside the hub 231 and extend outward from the hub 231. The rotating shaft 232 is arranged at the center inside the hub 231. A plurality of first magnets 130 are embedded in the positioning groove 111. The base 210 includes a magnetic fixing plate 211 and a cylinder 212. The magnetic fixing plate 211 is made of glue magnet or magnetic metal. The magnetic fixing plate 211 is arranged in the positioning groove 111 and magnetically attracted and fixed to the first magnet 130. One end of the cylinder 212 is integrally arranged in the middle of the magnetic fixing plate 211. The PCB board 240 and the motor assembly 220 are both sleeved outside the cylinder 212. The hub 231 is sleeved outside the motor assembly 220. The rotating shaft 232 is installed in the cylinder 212 through a bearing 234. In some embodiments, openings are provided through the upper and lower ends of the cylinder 212, and the opening at the lower end of the cylinder 212 penetrates through the magnetic fixing plate 211. In other embodiments, the base 210 includes: a fixing plate, a cylinder 212 and a plurality of second magnets. One end of the cylinder 212 is integrally arranged in the middle of the fixing plate. A plurality of second magnets are spaced and embedded in the lower surface of the fixing plate. The second magnets correspond to the first magnets 130 one by one, so that when the fan head 200 is installed in the fan frame 100, under the action of the first magnet 130 and the second magnet, automatic alignment and magnetic attraction fixation can be achieved.

[0036] It should be noted that the base 210 with the magnetic fixing plate 211 can be magnetically attracted and fixed to the first magnet 130, so that the fan head 200 is fixed on the support portion 110 of the fan frame 100. During assembly, the first connector 270 of the fan head 200 can be aligned with the second connector 120 on the fan frame 100. The arrangement of the magnetic fixing plate 211 and the first magnet 130 makes the fan head 200 magnetically attracted and fixed, making the connection between the first connector 270 and the second connector 120 more stable and convenient for assembly. When it is necessary to disassemble the fan head 200 from the fan frame 100, the fan head 200 can be directly held and pulled out relative to the fan frame 100 to achieve the disassembly of the fan head 200 relative to the fan frame 100. The disassembly and assembly are very simple, achieving the effect of quick disassembly.

[0037] Optionally, as Figure 4-6As shown in the figure, to avoid interference of the magnetic fixing plate 211 with the PCB board 240, which may cause short circuit or damage to the PCB board 240, a first insulating sheet 250 is provided between the PCB board 240 and the magnetic fixing plate 211. The first insulating sheet 250 is sleeved outside the cylinder 212, and the avoidance notch 2112 penetrates through the first insulating sheet 250 to facilitate the electrical connection between the second connector 120 and the first connector 270. The first insulating sheet 250 is pasted or injection-molded and fixed on the magnetic fixing plate 211. Both the PCB board 240 and the magnetic fixing plate 211 are circular, and the diameter of the PCB board 240 is less than or equal to the diameter of the magnetic fixing plate 211. The diameter of the first insulating sheet 250 is greater than or equal to the diameter of the PCB board 240. The second insulating sheet 260 is attached to the lower surface of the magnetic fixing plate 211. The first insulating sheet 250 and the second insulating sheet 260 are made of Mylar sheet or other insulating materials. As Figure 7 As shown in the figure, to stably arrange the motor assembly 220 on the base 210, a plurality of positioning posts 2223 protrude downward from the lower surface of the lower wire winding sleeve 2222, and positioning holes 2111 for the positioning posts 2223 to be inserted one by one are provided on the PCB board 240, the first insulating sheet 250, and the magnetic fixing plate 211. The magnetic fixing plate 211 is made of magnetic metal, and the cylinder 212 is fixed on the magnetic fixing plate 211 by welding or injection molding or other fixing methods. The wire winding sleeve 222 is made of insulating material.

[0038] Optionally, to more stably install the fan head 200 into the fan frame 100, as Figure 2 、 4 shown in the figure, a plurality of first limiting posts 112 are arranged at intervals on the inner side wall of the positioning groove 111, and a plurality of first limiting notches 2113 adapted to the first limiting posts 112 are provided on the outer side wall of the magnetic fixing plate 211, so that the first connector 270 of the fan head 200 and the second connector 120 are accurately aligned. In some embodiments, a second limiting post 2114 protrudes outward from the outer side wall of the magnetic fixing plate 211, and a second limiting notch 114 adapted to the second limiting post 2114 is provided on the inner side wall of the positioning groove 111.

[0039] Optionally, as Figure 2-6 shown in Figures 7 and 8, a first wiring groove communicating with the positioning groove 111 is provided on the bracket portion 110, and a first cable 140 is arranged in the first wiring groove. One end of the first cable 140 is electrically connected to the second connector 120, and the other end extends outside the fan frame 100. In some embodiments, a third connector is provided at one end of the first cable 140 away from the second connector 120, and the third connector can be a pluggable connector, a USB interface connector, a quick-release connector, etc.

[0040] Optionally, as Figure 1-8As shown in the figure, at least two mounting cavities 101 are provided on each fan frame 100, and a fan head 200 is installed in each mounting cavity 101. Two adjacent fan heads 200 are connected in series. A second connector 120 is provided on the support portion 110 of one of the mounting cavities 101, and two second connectors 120 are provided on the support portions 110 of the remaining mounting cavities 101. The second connectors 120 in two adjacent mounting cavities 101 are connected in series through a second cable 150. A second wiring groove is provided on the fan frame 100 and on the support portion 110, and the second cable 150 is arranged in the second wiring groove. The first cable 140 passes through one of the mounting cavities 101 with two second connectors 120. In this embodiment, the second wiring groove is located on two adjacent support portions 110, and both ends of the second wiring groove are communicated with the positioning grooves 111 on the two support portions 110 respectively. For the series connection of two adjacent fan heads 200, in order to realize the series connection of two adjacent fan heads 200, the first connector 270 of the fan head 200 is in contact connection with the second connector 120 in the mounting cavity, and the second connectors 120 in the two mounting cavities 101 are connected in series through the second cable 150.

[0041] In one embodiment, as Figure 8 shown, two mounting cavities 101 are provided on each fan frame 100, which are respectively a first mounting cavity and a second mounting cavity. Two second connectors 120 are provided on the positioning groove 111 in the first mounting cavity, and one second connector 120 is provided on the positioning groove 111 in the second mounting cavity. The first cable 140 passes through the first mounting cavity and is electrically connected to one second connector 120. The other second connector 120 in the first mounting cavity is connected in series with the second connector 120 in the second mounting cavity through a second cable 150. The two first connectors 270 of one fan head 200 respectively correspond to the two second connectors 120 in the first mounting cavity one by one, and one first connector 270 of the other fan head 200 corresponds to the second connector 120 in the second mounting cavity.

[0042] Optionally, as Figure 1 shown, a mounting position 102 and mounting holes 103 are provided on the upper surface of the fan frame 100. The mounting position 102 is used for pasting and fixing damping foam, and the mounting holes 103 are used for bolts to pass through. In some embodiments, the fan frame 100 is rectangular but not limited to rectangular. Four mounting positions 102 are provided, and the four mounting positions 102 are respectively arranged at the four corners of the upper surface of the fan frame 100. Four mounting holes 103 are provided, and the four mounting holes 103 penetrate through the four mounting positions 102.

[0043] Optionally, the first connector 270 is a contact connector, and the second connector 120 and the third connector are pin connectors or reed connectors.

[0044] The above is only used to illustrate the technical solution of the present utility model rather than to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. A quick-release cooling fan, characterized in that: It comprises a fan frame (100) and a fan head (200); The fan frame (100) is provided with a mounting cavity (101); the fan frame (100) is provided with a bracket portion (110) at the bottom of the mounting cavity (101); a positioning groove (111) is provided at the center of the bracket portion (110); and a second connector (120) is provided on the positioning groove (111); The fan head (200) comprises a base (210), a motor assembly (220), a wheel fan (230) and a PCB board (240); the base (210) is detachably installed in the positioning groove (111); The motor assembly (220) is mounted on the base (210); The wheel fan (230) is disposed in the installation cavity (101) and installed on the base (210), and the wheel fan (230) is drivingly connected to the motor assembly (220); The PCB board (240) is arranged between the motor assembly (220) and the base (210), and the PCB board (240) is electrically connected to the motor assembly (220). The lower end surface of the PCB board (240) is exposed with a first connector (270) that is detachably connected to the second connector (120), and the first connector (270) is electrically connected to the second connector (120).

2. The quick-release cooling fan according to claim 1, characterized in that: The wheel fan (230) comprises a wheel hub (231), a rotating shaft (232) and a fan blade (233); the fan blade (233) is arranged outside the wheel hub (231); the rotating shaft (232) is arranged inside the wheel hub (231); a plurality of first magnets (130) are embedded in the positioning groove (111); the base (210) comprises a magnetic fixing plate (211) and a cylinder (212); the magnetic fixing plate (211) is arranged in the positioning groove (111) and is fixed to the first magnet (130) by magnetic attraction; One end of the cylinder (212) is integrally arranged in the middle of the magnetic fixing plate (211), the PCB board (240) and the motor assembly (220) are both sleeved outside the cylinder (212), the hub (231) is sleeved outside the motor assembly (220), and the rotating shaft (232) is installed in the cylinder (212) via a bearing (234).

3. The quick-release cooling fan according to claim 2, characterized in that: A plurality of first limiting columns (112) are arranged at intervals on the inner side wall of the positioning groove (111), and a plurality of first limiting notches (2113) adapted to the first limiting columns (112) are arranged on the outer side wall of the base (210).

4. The quick-release cooling fan according to claim 2 or 3, characterized in that: The bracket portion (110) is provided with a first wiring groove connected to the positioning groove (111), and a first cable (140) is arranged in the first wiring groove. One end of the first cable (140) is electrically connected to the second connector (120), and the other end extends out of the fan frame (100).

5. The quick-release cooling fan according to claim 4, characterized in that: Each of the fan frames (100) is provided with at least two installation cavities (101), and a fan head (200) is installed in each of the installation cavities (101). Two adjacent fan heads (200) are connected in series, and one second connector (120) is provided on the bracket portion (110) of one of the installation cavities (101), and two second connectors (120) are provided on the bracket portion (110) of the remaining installation cavities (101). A second wiring groove is provided on the fan frame (100) and on the bracket portions (110) of two adjacent installation cavities (101), and a second cable (150) is provided in the second wiring groove, and the second cable (150) is connected to the second connectors (120) at both ends.

6. The quick-release cooling fan according to claim 1, characterized in that: The upper surface of the sash frame (100) is provided with a mounting position (102) and a mounting hole (103), and the mounting hole (103) is used for bolts to pass through.

7. The quick-release cooling fan according to claim 6, characterized in that: The fan frame (100) is rectangular, and is provided with four mounting positions (102), which are respectively arranged at four corners of the upper surface of the fan frame (100), and is provided with four mounting holes (103), which penetrate through the four mounting positions (102).

8. The quick-release cooling fan according to claim 1, characterized in that: The first connector (270) is a contact connector, and the second connector (120) is a spring-pin connector or a spring-type connector.

9. The quick-release cooling fan according to claim 1, characterized in that: The bracket portion (110) is located outside the positioning groove (111) and is provided with a plurality of air inlets (113).

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