Fan head convenient to disassemble

Abstract

The utility model discloses a fan head convenient to disassemble, and relates to the technical field of cooling fans. The fan comprises a base, a motor assembly, a wheel fan and a PCB. The base can be detachably connected with an external assembly body, and an avoiding notch is formed in the base; the motor assembly is mounted on the base; the wheel fan is mounted on the base and 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 an external connector is arranged on the lower end face of the PCB, and the first connector is exposed outside through the avoiding notch. By the adoption of the technical scheme, a user can conveniently and completely detach the fan head from an external assembly such as a fan frame for maintenance and cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling fans, in particular to a fan head which is convenient to disassemble. 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. 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. At this time, the power cord will still restrict the fan head, which is not conducive to the maintenance and cleaning of the fan head. Content of the Utility Model

[0005] The utility model aims to overcome at least one of the above-mentioned defects in the prior art, and provides a fan head which is convenient to disassemble, so that the fan head can be completely disassembled from the external assembly for maintenance and cleaning.

[0006] To achieve the above object, the technical solution adopted by the utility model is: a fan head which is convenient to disassemble, including a base, a motor assembly, a wheel fan and a PCB board; the base can be detachably connected with an external assembly, and an avoidance notch is arranged on the base; the motor assembly is installed on the base; the wheel fan is installed on the base and is drivingly connected with the motor assembly; the PCB board is arranged between the motor assembly and the base, the PCB board is electrically connected with the motor assembly, a first connector detachably connected with an external connector is arranged on the lower end surface of the PCB board, and the first connector is exposed outside through the avoidance notch.

[0007] Optionally, the base can be magnetically fixed to the external assembly. The base includes: a magnetic fixing plate and a cylinder; one end of the cylinder is integrally arranged in the middle of the magnetic fixing plate, and both the PCB board and the motor assembly are sleeved outside the cylinder; a part of the wheel fan is sleeved outside the motor assembly, and the other part is arranged inside the cylinder.

[0008] Optionally, the motor assembly includes silicon steel sheets, a winding sleeve, a magnet ring, and a magnetic seal ring; the winding sleeve consists of an upper winding sleeve and a lower winding sleeve, and both the upper winding sleeve and the lower winding sleeve are sleeved outside the cylinder; multiple silicon steel sheets are stacked, and the silicon steel sheets are arranged between the upper winding sleeve and the lower winding sleeve; the magnet ring is arranged on the inner side wall of the wheel fan and is sleeved outside the winding sleeve; the magnetic seal ring is arranged between the magnet ring and the inner side wall of the wheel fan.

[0009] Optionally, the wheel fan includes: a hub, a rotating shaft, and fan blades; the hub is sleeved outside the motor assembly; one end of the rotating shaft is integrally provided with the hub, and the other end is connected to the cylinder through a bearing; multiple fan blades are provided, and the fan blades are circumferentially distributed outside the hub.

[0010] Optionally, a first insulating sheet is arranged between the PCB board and the magnetic fixing plate, the first insulating sheet is sleeved outside the cylinder, and the avoidance notch penetrates through the first insulating sheet.

[0011] Optionally, a second insulating sheet is attached to the lower surface of the magnetic fixing plate.

[0012] Optionally, several positioning posts protrude downward from the lower surface of the lower winding sleeve, and positioning holes for the positioning posts to be inserted one by one are arranged on the PCB board, the first insulating sheet, and the magnetic fixing plate.

[0013] Optionally, the first connector is a contact connector, two first connectors are provided, and both two first connectors are arranged on the lower end surface of the PCB board.

[0014] Optionally, the magnetic fixing plate is a magnetic metal product, the cylinder is a metal product, and the winding sleeve is an insulating product.

[0015] Optionally, the base includes: a fixing plate, a cylinder, and several magnets; one end of the cylinder is integrally arranged in the middle of the fixing plate, the PCB board and the motor assembly are both sleeved outside the cylinder; a part of the wheel fan is sleeved outside the motor assembly, and another part is arranged inside the cylinder; the magnets are embedded in the fixing plate.

[0016] After adopting the above technical solution, the beneficial effect of the present utility model is: A fan head that is convenient to disassemble, including a base, a motor assembly, a wheel fan, and a PCB board. The base can be detachably connected to an external assembly, and an avoidance notch is arranged on the base. The motor assembly is installed on the base. The wheel fan is installed on the base and 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, and a first connector detachably connected to an external connector is arranged on the lower end surface of the PCB board, and the first connector is exposed outside through the avoidance notch.

[0017] The base can be magnetically fixed to an external assembly. The base includes a magnetic fixing plate and a cylinder. The magnetic fixing plate is made of bonded magnet or magnetic metal. 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; a part of the fan blade is sleeved outside the motor assembly, and the other part is arranged inside the cylinder. The external assembly can be a magnetic metal frame, and the fan head is magnetically fixed on the metal frame for use, which is convenient for disassembly and cleaning. The external assembly can also be a magnetic fan frame, which is convenient for disassembly and cleaning. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of the detachable fan head of the present invention;

[0020] Figure 2 is a cross-sectional view of the detachable fan head;

[0021] Figure 3 is an exploded view of the detachable fan head;

[0022] Figure 4 is an exploded view of another solution of the detachable fan head;

[0023] Figure 5 is another exploded view of another solution of the detachable fan head;

[0024] Figure 6 is a schematic structural diagram of the separated state of the detachable fan head of the present invention and the external assembly, and the external assembly is a fan frame.

[0025] Explanation of the reference numerals: 100, base; 110, magnetic fixing plate; 111, positioning hole; 112, avoidance gap; 120, cylinder; 130, fixing plate; 140, second magnet; 200, motor assembly; 210, silicon steel sheet; 220, winding sleeve; 221, upper winding sleeve; 222, lower winding sleeve; 2221, positioning column; 230, magnet ring; 240, magnetic sealing ring; 300, wheel fan; 310, wheel hub; 320, rotating shaft; 330, fan blade; 340, bearing; 400, PCB board; 500, first connector; 600, first insulating sheet; 700, second insulating sheet; 800, fan frame; 810, bracket; 811, positioning groove; 812, air inlet; 813, first magnet; 900, second connector;. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0028] It should be noted that when an element is referred to as being "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 being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of some utility models, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0031] This embodiment relates to a fan head that is easy to disassemble, such as Figures 1-5As shown, it includes a base 100, a motor assembly 200, a wheel fan 300 and a PCB board 400. The base 100 can be detachably connected to an external assembly, and an avoidance notch 112 is provided on the base 100. The motor assembly 200 is installed on the base 100. The wheel fan 300 is installed on the base 100 and is drivingly connected to the motor assembly 200. The PCB board 400 is disposed between the motor assembly 200 and the base 100, the PCB board 400 is electrically connected to the motor assembly 200, and a first connector 500 detachably connected to an external connector is provided on the lower end surface of the PCB board 400, and the first connector 500 is exposed through the avoidance notch 112. Specifically, the base 100 can be detachably installed with the external assembly through structures such as a snap or magnetic attraction structure. The external assembly is a fan frame 800 in this embodiment, and the external connector can be a connector provided in the fan frame 800 and capable of being electrically connected to the first connector 500. In other embodiments, the external connector can be a cable with one end capable of being electrically connected to the first connector 500 to facilitate power-on maintenance of the fan head.

[0032] It should be noted that the detachable connection between the fan head and the fan frame 800, and the detachable connection between the first connector 500 of the fan head and the connector (external connector) in the fan frame 800 facilitate the maintenance and cleaning after the fan head is detached from the fan frame 800, and avoid the restriction of the cable in the fan frame 800 on the fan head.

[0033] Optionally, as Figures 2-4 shown, the base 100 can be magnetically fixed to the external assembly. The base 100 includes a magnetic fixing plate 110 and a cylinder 120. The magnetic fixing plate 110 is made of glue magnet or magnetic metal. One end of the cylinder 120 is integrally provided in the middle of the magnetic fixing plate 110. The PCB board 400 and the motor assembly 200 are both sleeved outside the cylinder 120, and a part of the wheel fan 300 is sleeved outside the motor assembly 200 and another part is disposed inside the cylinder 120. In this embodiment, openings penetrate through the upper and lower ends of the cylinder 120, and the opening at the lower end of the cylinder 120 penetrates through the magnetic fixing plate 110. In this embodiment, the external assembly is made of a material that can be magnetically fixed by a magnetic member. The base 100 with the magnetic fixing plate 110 can be magnetically fixed to the magnetic external assembly, and has the effect of simple disassembly and assembly. When maintenance and cleaning of the fan head are required, the fan head can be quickly detached from the external assembly. In other embodiments, the base 100 includes: a fixing plate 130, a cylinder 120 and a plurality of second magnets 140. One end of the cylinder 120 is integrally provided in the middle of the fixing plate 130, and the plurality of second magnets 140 are spaced and embedded in the lower surface of the fixing plate 130.

[0034] Preferably, in one embodiment, as Figure 6As shown in the figure, the external assembly is a fan frame 800. The fan frame 800 is provided with a bracket part 810 at the bottom of the installation cavity. A positioning groove 811 is provided in the center of the bracket part 810. A plurality of air inlets 812 are provided on the outside of the bracket part 810 at the outside of the positioning groove 811. The external connector can be named the second connector 900. In this embodiment, the second connector 900 is arranged on the positioning groove 811. A plurality of first magnets 813 are embedded in the positioning groove 811. The base 100 with the magnetic fixing plate 110 can be magnetically fixed to the first magnets 813, so that the fan head is fixed on the bracket part 810 of the fan frame 800. During assembly, the first connector 500 of the fan head can be aligned with the second connector 900 on the fan frame 800. The setting of the magnetic fixing plate 110 and the first magnets 813 enables the fan head to be magnetically fixed, making the connection between the first connector 500 and the second connector 900 more stable. The entire assembly process is very simple. When it is necessary to disassemble the fan head from the fan frame 800, the fan head can be directly held and pulled out relative to the fan frame 800 to realize the disassembly of the fan head relative to the fan frame 800, achieving the effect of quick disassembly.

[0035] Optionally, as Figures 1-5 shown, the upper and lower ends of the cylinder 120 are penetrated with openings. The opening at the lower end of the cylinder 120 penetrates the fixing plate 130. The PCB board 400 and the motor assembly 200 are both sleeved outside the cylinder 120. A part of the impeller 300 is sleeved outside the motor assembly 200 and another part is arranged inside the cylinder 120. The second magnet 140 is embedded in the fixing plate 130. The magnetic fixing plate 110 is arranged in the positioning groove 811 and is magnetically fixed to the first magnets 813.

[0036] In this embodiment, as Figures 2-5 shown, the motor assembly 200 includes silicon steel sheets 210, a winding sleeve 220, a magnet ring 230 and a magnetic seal ring 240. The winding sleeve 220 is composed of an upper winding sleeve 221 and a lower winding sleeve 222. The upper winding sleeve 221 and the lower winding sleeve 222 are both sleeved outside the cylinder 120. The winding sleeve 220 is made of plastic material. A plurality of silicon steel sheets 210 are stacked. The silicon steel sheets 210 are arranged between the upper winding sleeve 221 and the lower winding sleeve 222. The magnet ring 230 is arranged on the inner side wall of the impeller 300 and is sleeved outside the winding sleeve 220. The magnetic seal ring 240 is arranged between the magnet ring 230 and the inner side wall of the impeller 300. The magnetic seal ring 240 is made of metal material, such as iron, stainless steel, etc.

[0037] Optionally, as Figure 2 、 3As shown in the figure, the wheel fan 300 includes: a hub 310, a rotating shaft 320, and fan blades 330. The hub 310 is sleeved outside the motor assembly 200. One end of the rotating shaft 320 is integrally provided with the hub 310, and the other end is arranged in the cylinder 120 through a bearing 340. A plurality of fan blades 330 are provided, and the fan blades 330 are circumferentially distributed outside the hub 310, and the fan blades 330 extend outward from the hub 310.

[0038] Optionally, as Figure 3 shown, to avoid interference of the magnetic fixing plate 110 with the PCB board 400 resulting in short circuit or damage of the PCB board 400, a first insulating sheet 600 is provided between the PCB board 400 and the magnetic fixing plate 110. The first insulating sheet 600 is sleeved outside the cylinder 120, and the avoiding notch 112 penetrates through the first insulating sheet 600 to facilitate electrical connection between the external connector and the first connector 500. The first insulating sheet 600 is pasted or injection-molded and fixed on the magnetic fixing plate 110. Both the PCB board 400 and the magnetic fixing plate 110 are circular, and the diameter of the PCB board 400 is less than or equal to the diameter of the magnetic fixing plate 110. The diameter of the first insulating sheet 600 is greater than or equal to the diameter of the PCB board 400. A second insulating sheet 700 is attached to the lower surface of the magnetic fixing plate 110. The first insulating sheet 600 and the second insulating sheet 700 are made of Mylar sheets or other insulating materials.

[0039] Optionally, as Figures 2-5 shown, in order to stably arrange the motor assembly 200 on the base 100, a plurality of positioning posts 2221 protrude downward from the lower surface of the lower winding sleeve 222, and positioning holes 111 for the positioning posts 2221 to be inserted one by one are provided on the PCB board 400, the first insulating sheet 600, and the magnetic fixing plate 110.

[0040] Optionally, the first connector 500 is a contact connector, and two first connectors 500 are provided, and both connectors are arranged on the lower end surface of the PCB board 400.

[0041] Optionally, the magnetic fixing plate 110 is made of magnetic metal, and the cylinder 120 is fixed on the magnetic fixing plate 110 by welding or injection molding and other fixing methods. The winding sleeve 220 is made of insulating material.

[0042] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A fan head that is easy to disassemble, characterized in that: It comprises a base (100), a motor assembly (200), a wheel fan (300) and a PCB board (400); The base (100) can be detachably connected to an external assembly, and an avoidance notch (112) is provided on the base (100); The motor assembly (200) is mounted on the base (100); The impeller (300) is mounted on the base (100) and is drivingly connected to the motor assembly (200); The PCB board (400) is arranged between the motor assembly (200) and the base (100), the PCB board (400) is electrically connected to the motor assembly (200), and a first connector (500) detachably connected to an external connector is arranged on the lower end surface of the PCB board (400), and the first connector (500) is exposed to the outside through the avoidance gap (112).

2. The easily disassembled fan head according to claim 1, characterized in that: The base (100) can be fixed to an external assembly by magnetic attraction, and the base (100) comprises: a magnetic fixing plate (110) and a cylinder (120); One end of the cylinder (120) is integrally arranged in the middle of the magnetic fixing plate (110), and the PCB board (400) and the motor assembly (200) are both sleeved outside the cylinder (120); a part of the impeller (300) is sleeved outside the motor assembly (200), and the other part is arranged inside the cylinder (120).

3. The easily disassembled fan head according to claim 2, characterized in that: The motor assembly (200) comprises a silicon steel sheet (210), a winding sleeve (220), a magnet ring (230) and a magnetic sealing ring (240); The winding sleeve (220) is composed of an upper winding sleeve (221) and a lower winding sleeve (222), and the upper winding sleeve (221) and the lower winding sleeve (222) are both sleeved outside the cylinder (120); The silicon steel sheets (210) are stacked in a plurality of layers, and the silicon steel sheets (210) are arranged between the upper winding sleeve (221) and the lower winding sleeve (222); The magnet ring (230) is arranged on the inner wall of the impeller (300) and is sleeved outside the winding sleeve (220); the magnetic sealing ring (240) is arranged between the magnet ring (230) and the inner wall of the impeller (300).

4. The easily disassembled fan head according to claim 2 or 3, characterized in that: The wheel fan (300) comprises: a wheel hub (310), a rotating shaft (320) and fan blades (330); The wheel hub (310) is sleeved outside the motor assembly (200); One end of the rotating shaft (320) is integrally arranged with the hub (310), and the other end is connected to the cylinder (120) via a bearing (340); A plurality of fan blades (330) are provided, and the fan blades (330) are distributed in a circular shape outside the hub (310).

5. The easily disassembled fan head according to claim 3, characterized in that: A first insulating sheet (600) is provided between the PCB board (400) and the magnetic fixing plate (110), and the first insulating sheet (600) is sleeved outside the cylinder (120).

6. The easily disassembled fan head according to claim 5, characterized in that: A second insulating sheet (700) is attached to the lower surface of the magnetic fixing plate (110).

7. The easily disassembled fan head according to claim 5, characterized in that: A plurality of positioning posts (2221) protrude downward from the lower surface of the lower winding sleeve (222), and positioning holes (111) for the positioning posts (2221) to be plugged in one by one are provided on the PCB board (400), the first insulating sheet (600) and the magnetic fixing plate (110).

8. The easily disassembled fan head according to claim 1, characterized in that: The first connector (500) is a contact type connector, two first connectors (500) are provided, and the two first connectors (500) are both provided on the lower end surface of the PCB board (400).

9. The easily disassembled fan head according to claim 3, characterized in that: The magnetic fixing plate (110) is a magnetic metal product, the cylinder (120) is a metal product, and the winding sleeve (220) is an insulating product.

10. The easily disassembled fan head according to claim 1, characterized in that: The base (100) comprises: a fixing plate (130), a cylinder (120) and a plurality of second magnets (140); One end of the cylinder (120) is integrally arranged in the middle of the fixing plate (130); the PCB board (400) and the motor assembly (200) are both sleeved outside the cylinder (120); a portion of the impeller (300) is sleeved outside the motor assembly (200), and another portion is arranged inside the cylinder (120); The second magnet (140) is embedded in the fixing plate (130).

Images