Fan and electronic equipment

Abstract

The utility model discloses a fan which comprises a fan body, a side frame is arranged on the periphery of the fan body, a plurality of mounting holes are formed in the side frame, and the mounting holes comprise magnet mounting holes and limiting holes. The fixed magnets are mounted in the magnet mounting holes and used for being attracted to ferromagnetic metal on the circuit board, the limiting holes are used for being limited to the circuit board, and then the fan body is connected to the circuit board. According to the utility model, the installation, disassembly, maintenance or cleaning process of the fan is structurally optimized and simplified, the fan can be installed only by placing the fan at a corresponding position, and the fan can be taken down only by pulling the fan outwards to get rid of the attraction force of the magnet during disassembly.

Description

Technical Field

[0001] The utility model relates to the technical field of computer accessories, in particular to a fan used for a notebook computer. Background Art

[0002] Laptop computers are electronic products commonly used in people's offices and daily lives. They are small in size, powerful in function, and have concentrated heat-generating components, which generate a lot of heat when working. In order to remove the heat from the laptop computer, the heat dissipation design mostly uses one or more fans and heat dissipation modules for forced convection heat dissipation.

[0003] The fans in the prior art are generally installed by screw locking, welding, and snap-on fixing. These installation and removal methods are cumbersome and complicated. There are many steps and there is a risk of damaging the main circuit board of the electronic product during removal, which is not conducive to the subsequent removal and maintenance of the fan or cleaning of the fan dust. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0006] The utility model discloses a fan, comprising: a fan body, a side frame is arranged on the outer periphery of the fan body, a plurality of mounting holes are arranged on the side frame, the mounting holes include segmented magnet mounting holes and limiting holes; fixed magnets are installed in the magnet mounting holes, the fixed magnets are used to be adsorbed with ferromagnetic metal on a circuit board, the limiting holes are used to limit the circuit board, and then the fan body is connected to the circuit board.

[0007] In one embodiment, the magnet mounting hole and the limiting hole are respectively two circular holes with different hole diameters in the mounting hole.

[0008] In one embodiment, the magnet mounting hole is arranged at the upper section of the mounting hole, and the limiting hole is arranged at the lower section of the mounting hole.

[0009] In one embodiment, the limiting hole is a relatively small section of the mounting hole, the limiting hole accommodates the ferromagnetic metal, and the limiting hole limits the ferromagnetic metal in a circumferential direction to limit the displacement of the fan along the plane of the circuit board.

[0010] In one embodiment, the magnet mounting hole is a section with a relatively larger hole diameter.

[0011] In one embodiment, the ferromagnetic metal is disposed at a position on the circuit board corresponding to the magnet mounting hole, and the ferromagnetic metal is adsorbed by the fixed magnet to limit the displacement of the fan along the axial direction of the mounting hole.

[0012] In one embodiment, the ferromagnetic metal is a circular screw head at the upper end of the screw, and the diameter of the screw head is smaller than the aperture of the limiting hole.

[0013] In one embodiment, the ferromagnetic metal is a columnar metal body welded on the circuit board, and the diameter of the columnar metal body is smaller than the aperture of the limiting hole.

[0014] In one embodiment, the ferromagnetic metal includes a main body and a protrusion, the diameter of the protrusion is smaller than the diameter of the main body, and the diameter of the protrusion is smaller than the aperture of the limiting hole.

[0015] In one embodiment, the ferromagnetic metal is fixed to other plastic structures by injection molding, or is fixed to other metal structures by welding or riveting.

[0016] In one embodiment, a plurality of elastic hooks are provided on the wall of the magnet mounting hole.

[0017] In one embodiment, the elastic hook is composed of a strip portion and a trapezoidal portion, the strip portion extends upward from the middle of the inner circumference of the magnet mounting hole, and the trapezoidal portion extends from the upper end of the strip portion toward the center of the magnet mounting hole.

[0018] In one embodiment, the trapezoidal portion protrudes from the magnet mounting hole, and the thickness of the trapezoidal portion gradually decreases along the extending direction of the trapezoidal portion.

[0019] In a second aspect, the utility model provides an electronic device including a fan and a housing, wherein a height d2 of the limiting hole is greater than a gap d1 between a top surface of the fan and a bottom surface of the housing, so that the fan body remains limited when it moves up and down.

[0020] The utility model provides a fan installation method: a magnet is fixed on the outer frame structure of the fan, and accordingly, a ferromagnetic metal is provided on the structure at the corresponding position of the magnet inside the notebook computer, such as by means of the metal screws originally locking the main circuit board, or a columnar metal body is provided on the main circuit board or other structures. At the same time, a horizontal positioning structure is provided, and after the fan is placed at the set position, the fan is fixed in the horizontal direction through the positioning column / hole on the structure, and the magnet's suction force on the ferromagnetic metal fixes the fan in the vertical direction.

[0021] The advantage of the utility model is that it optimizes and simplifies the installation and disassembly, maintenance or cleaning process of the fan from a structural perspective. The fan can be installed by simply placing it in a corresponding position. When disassembling, the fan can be removed by simply pulling it outward to get rid of the suction of the magnet. The installation and disassembly are convenient and the process is simple. The risk of damaging the main circuit board of the electronic product during disassembly is avoided, and it is convenient to subsequently remove and repair the fan or clean the fan dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of fan installation in an embodiment of the utility model.

[0024] Figure 2 This is an exploded view of a fan installation according to an embodiment of the utility model.

[0025] Figure 3 This is a schematic diagram of the support position structure of an embodiment provided by the utility model

[0026] Figure 4 This is an exploded view of the bracket position of an embodiment provided by the utility model

[0027] Figure 5 This is a cross-sectional view of a fan installation portion of an embodiment provided by the utility model

[0028] Figure 6 This is a cross-sectional view of the installation of a ferromagnetic metal according to another embodiment of the present invention.

[0029] Figure 7 This is a cross-sectional view of the installation of a ferromagnetic metal according to another embodiment of the utility model.

[0030] Reference numerals:

[0031] 10. Circuit board, 20. Screw, 30. Stud, 40. Fan body, 41. Plastic bracket, 411. Elastic hook, 4111. Strip portion, 4112. Trapezoidal portion, 4113. Groove, 412. Magnet mounting hole, 413. Limiting hole, 414. Magnet step surface, 42. Side frame, 50. Fixed magnet, 60. Columnar metal body, 70. Two-stage columnar metal, 80. Shell. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the utility model in more detail, the implementation of the embodiments of the utility model is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the utility model. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] Please refer to Figure 1 , Figure 2 The notebook computer is provided with a circuit board 10 and one or more cooling fan bodies 40.

[0034] Please refer to Figure 2 , Figure 5 , the circuit board 10 is originally provided with a plurality of screws 20 which are locked on the studs 30 .

[0035] Please refer to Figure 1 , Figure 2 The side frame 42 of the cooling fan body 40 is generally made of plastic. A plurality of plastic brackets 41 are disposed on the periphery of the side frame 42 . The plastic brackets 41 and the side frame 42 can be integrally formed.

[0036] Please refer to Figure 4 The center of the plastic bracket 41 is provided with two circular holes of different diameters, wherein the upper hole with a larger diameter is a magnet mounting hole 412, and the lower hole with a relatively smaller diameter is a limiting hole 413. The intersection of the two holes of different inner diameters forms a magnet supporting step surface 414. Multiple elastic hooks 411 are provided outside the magnet mounting hole 412.

[0037] Please refer to Figure 4 The fixed magnet 50 is a cylindrical magnet, which is a neodymium iron boron magnet.

[0038] The diameter of the magnet mounting hole 412 is designed to be slightly larger than the outer diameter of the fixed magnet 50 , and the diameter of the limiting hole 413 is designed to be slightly larger than the outer diameter of the screw head of the screw 20 .

[0039] Please refer to Figure 3 , Figure 4 The elastic hook 411 includes a strip portion 4111 and a trapezoidal portion 4112. The strip portion 4111 extends upward from the middle of the inner circumference of the magnet mounting hole, and grooves are provided on both sides thereof to facilitate the elastic hook 411 to deform outward when subjected to pressure; the trapezoidal portion 4112 extends from the upper end of the strip portion 4111 to the center of the magnet mounting hole 412 and protrudes from the magnet mounting hole 412. Along the extension direction of the trapezoidal portion 4112, the thickness of the trapezoidal portion 4112 gradually decreases to form a guiding inclined surface. When the fixed magnet 50 is installed, the downward pressure is partially decomposed into an outward component force, causing the strip portion 4111 to deform. During installation, one end of the cylindrical fixed magnet 50 faces the upper magnet mounting hole 412, and the fixed magnet 50 is pressed into the hole, so that the plastic hook 411 is squeezed by the fixed magnet 50 and deforms and springs outward until the fixed magnet 50 is squeezed into the magnet mounting hole 412 as a whole, and the strip portion 4111 returns to a natural state. The lower end surface of the fixed magnet 50 is in contact with and supported by the magnet step surface 414, and the upper end surface is clamped in the hole by the trapezoidal portion 4112.

[0040] Please refer to Figure 3 The fixing magnet 50 is fixed in the bracket 41. The fixing magnet 50 can be buckled into the mounting hole 412 when the fan body is produced at the supplier end, and delivered to the notebook computer assembly factory as a whole with the fan body.

[0041] Please refer to Figure 2 In the plane direction of the circuit board 10 , the plastic bracket 41 of the fan body 40 is designed to correspond to the position of the original locking screw 20 on the circuit board 10 .

[0042] Please refer to Figure 5 After placing the fan body 40 at the set position, the screw head of the screw 20 is inserted into the insertion limit hole 413 of the bracket 41. The outer diameter of the screw head matches the insertion limit hole 413, so the fan body 40 can be positioned horizontally. The screw 20 is auxiliary as a ferromagnetic metal to attract the fixed magnet 50, so the fan body can be positioned vertically.

[0043] In addition to using the screws 20 originally used to fix the circuit board 10 as ferromagnetic metal, other forms of ferromagnetic metal may also be used.

[0044] For another embodiment of ferromagnetic metal, please refer to Figure 6 During SMT of the circuit board 10, a columnar metal body 60 is directly welded as a ferromagnetic metal. The outer dimension of the columnar metal body 60 is slightly smaller than and matches the inner dimension of the inserting limit hole 413 of the plastic bracket 41. After the inserting limit hole 413 is inserted on the columnar metal body 60, it can also fix the fan body 40 horizontally and vertically.

[0045] For another embodiment of the ferromagnetic metal, please refer to Figure 7 If there is no circuit board 10 near the plastic bracket 41 of the fan body 40 or there is no spare space on the circuit board 10, that is, when it is impossible to use the screws 20 locked on the circuit board 10 or the welded columnar metal body 60 as the ferromagnetic metal, a two-section columnar metal 70 can be set on the internal structure of the laptop computer shell as the ferromagnetic metal. The larger part of the lower part of the two-section columnar metal 70 is the body 71, and the smaller end of the two-section columnar metal 70 is the protrusion 72. The protrusion 72 is inserted into the insertion limit hole 413 of the plastic bracket 41, and can also fix the fan body 40 horizontally and vertically. The step surface where the two sections of the column are connected serves as an auxiliary stable support surface for the plastic bracket 41. The two-section columnar metal 70 can be fixed with other plastic structures in the laptop computer shell by injection molding, or it can be fixed with other metal structures by welding or riveting.

[0046] The fixed magnet 50 and the ferromagnetic metal may be in other shapes besides the cylindrical shape listed above, such as a square column, a prism, etc. The magnet mounting hole 412 and the limiting hole 413 of the matching plastic bracket 41 may be in the same shape.

[0047] Please refer to Figure 5, in order to prevent the laptop computer from getting rid of the longitudinal suction of the magnet when it is subjected to vibration shock in abnormal circumstances, causing the instantaneous displacement of the fan body, the longitudinal height of the hook 411 can be appropriately increased to support the inside of the laptop computer housing 80. Or the longitudinal height of the insertion limit hole 413 can be appropriately increased, so that the height d2 of the insertion limit hole 413 is greater than the gap d1 between the fan body 40 and the laptop computer housing 80, so that the fan body 40 does not have enough longitudinal space to break away from the ferromagnetic metal and shift laterally, but will be reset in the longitudinal direction due to the suction of the magnet.

[0048] Optimally, in order to prevent the laptop computer from being shaken by vibration under abnormal circumstances and escaping from the longitudinal suction of the magnet, causing instantaneous longitudinal displacement of the fan body, a supporting protection structure can be provided longitudinally at the position of the fan body inside the laptop computer, or the depth of the positioning column / hole can be increased accordingly, that is, the height in the longitudinal direction. Even if it is subjected to vibration shock, the suction of the magnet on the ferromagnetic metal is instantly escaped in the longitudinal direction. However, since the depth of the positioning column / hole is greater than the gap between the fan body and the laptop computer housing in the longitudinal direction, the fan body will not be laterally displaced after being separated from the positioning column in the longitudinal direction, but will be reset in the longitudinal direction due to the suction of the magnet.

[0049] The utility model provides a method for installing a notebook computer fan body, wherein a magnet is fixed on an outer frame structure of the fan body, and correspondingly, a ferromagnetic metal is provided on a structure at a position corresponding to the magnet inside the notebook computer, such as by using a metal screw originally locking a circuit board, or by providing a columnar metal body on the circuit board or other structures.

[0050] At the same time, a transverse positioning structure is provided. After the fan body is placed at a set position, the fan body is fixed in the transverse direction through the positioning columns / holes on the structure, and at the same time, the suction force of the magnet on the ferromagnetic metal fixes the fan body in the longitudinal direction.

[0051] The utility model has the advantages of optimizing and simplifying the installation and disassembly of the fan body for maintenance or cleaning of dust on the fan body from a structural perspective. The installation is completed by simply placing the fan body in a corresponding position. When disassembling, the fan body can be removed by simply pulling it outward to get rid of the suction of the magnet.

[0052] The advantage of the fan body installation method adopted by the utility model is that the operators of the notebook computer assembly factory only need to align the fan body and put it into the set position to complete the installation by the suction force of the magnet and the ferromagnetic metal. The installation and disassembly maintenance or cleaning of the fan dust are extremely simple, saving a lot of time and reducing the burden of the installation and maintenance personnel.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. It should be noted that the terms used herein are only for describing specific implementations and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0055] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fan, characterized in that: include: A fan body, wherein a side frame is arranged on the periphery of the fan body, and a plurality of mounting holes are arranged on the side frame, wherein the mounting holes include segmented magnet mounting holes and limiting holes; A fixed magnet is installed in the magnet installation hole. The fixed magnet is used to adsorb the ferromagnetic metal on the circuit board. The limiting hole is used to limit the position of the circuit board, thereby connecting the fan body to the circuit board.

2. The fan according to claim 1, characterized in that The magnet mounting hole and the limiting hole are respectively two circular holes with different hole diameters in the mounting hole.

3. The fan according to claim 2, characterized in that: The magnet mounting hole is arranged at the upper section of the mounting hole, and the limiting hole is arranged at the lower section of the mounting hole.

4. The fan according to claim 2, characterized in that: The limiting hole is a relatively small section of the mounting hole, and the limiting hole accommodates the ferromagnetic metal. The limiting hole limits and clamps the ferromagnetic metal in the circumferential direction to limit the displacement of the fan along the plane where the circuit board is located.

5. The fan according to claim 2, characterized in that: The magnet mounting hole is a section of the mounting hole with a relatively larger hole diameter.

6. The fan according to claim 1, characterized in that: The ferromagnetic metal is arranged at a position on the circuit board corresponding to the magnet mounting hole, and the ferromagnetic metal is adsorbed by the fixed magnet to limit the displacement of the fan along the axial direction of the mounting hole.

7. The fan according to claim 6, characterized in that: The ferromagnetic metal is a circular screw head at the upper end of the screw, and the diameter of the screw head is smaller than the aperture of the limiting hole.

8. The fan according to claim 6, characterized in that: The ferromagnetic metal is a columnar metal body welded on the circuit board, and the diameter of the columnar metal body is smaller than the aperture of the limiting hole.

9. The fan according to claim 6, characterized in that: The ferromagnetic metal includes a main body and a protruding portion, the diameter of the protruding portion is smaller than the diameter of the main body, and the diameter of the protruding portion is smaller than the aperture of the limiting hole.

10. The fan according to claim 9, characterized in that The ferromagnetic metal is fixed to other plastic structures by injection molding, or is fixed to other metal structures by welding or riveting.

11. The fan according to claim 1, characterized in that A plurality of elastic hooks are arranged on the wall of the magnet installation hole.

12. The fan according to claim 11, characterized in that The elastic hook is composed of a strip portion and a trapezoidal portion, wherein the strip portion extends upward from the middle portion of the inner circumference of the magnet mounting hole, and the trapezoidal portion extends from the upper end of the strip portion toward the center of the magnet mounting hole.

13. The fan according to claim 12, characterized in that The trapezoidal portion protrudes from the magnet mounting hole, and the thickness of the trapezoidal portion gradually decreases along the extending direction of the trapezoidal portion.

14. The fan according to claim 12, characterized in that Grooves are provided on the walls of the magnet mounting holes along both sides of the strip-shaped portion.

15. An electronic device, characterized in that: comprising a fan and a housing as described in any one of claims 1 to 14, The height d2 of the limiting hole is greater than the gap d1 between the top surface of the fan and the bottom surface of the shell, so that the fan body can maintain the limit position when it moves up and down.

Images