Fan fixing device and fixing method

Abstract

The invention discloses a fan fixing device and a fixing method.The fan fixing device comprises a fan body, fixing bolts are installed at the four corners of the fan body, the fan body comprises a first fixing panel, a fan channel and a second fixing panel, and the fan channel is clamped and fixed between the first fixing panel and the second fixing panel; first hole channels are formed in the four corners of the first fixing panel and the four corners of the second fixing panel, fixing bolts are installed in the first hole channels, each fixing bolt comprises a cross-shaped female head, a twill neck chamfer, a bolt rod and a threaded rod which are coaxially, sequentially and integrally connected, and the length of the twill neck chamfer and the length of the bolt rod are the same as the thickness of the fan body. The threaded rod directly screws the fixing plate in a threaded mode, and the first fastening nut and the bolt rod are matched to clamp the fixing plate so that the fan body and the fixing plate can be fixed. Rapid installation without accurate positioning requirements is achieved, the inclined grain neck chamfer is locked into the hole channel in an interference fit mode, looseness caused by installation deviation or vibration is effectively prevented, and the fixing stability is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling fans, and specifically to a fan fixing device and a fixing method. Background Art

[0002] At present, as a core component for heat dissipation, fans are widely used in fields such as electronic devices, industrial machinery, and household appliances. The stability, installation efficiency, and circuit design of their fixing devices directly affect the overall performance and safety of the devices. Traditional fan fixing devices mostly adopt a structure combining bolts or self-tapping screws with a fixing plate, but there are still many deficiencies in the existing technology. For example, when fixed by bolts, its structure requires precise alignment during installation, and the operation is cumbersome; moreover, there is no anti-loosening design between the bolts and the holes, and it is prone to loosening due to vibration during long-term use, affecting the fixing reliability. In addition, the fan power lines of existing devices are mostly externally exposed connections, which not only affect the aesthetics of the device but also pose potential risks of wire abrasion or short circuit.

[0003] More prominently, when traditional self-tapping screws are installed in plastic holes, due to the high thread density and shallow slotting, they are prone to generate excessive extrusion pressure on the holes, resulting in cracking of plastic components and reducing the structural strength. At the same time, the existing technology rarely considers the integrated design of electrical connections, resulting in complex circuit layouts and difficult maintenance.

[0004] Therefore, we propose a fan fixing device and a fixing method to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a fan fixing device and a fixing method to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A fan fixing device, comprising: a fan main body, fixing bolts are installed at four corners of the fan main body. The fan main body includes a first fixing panel, a fan channel, and a second fixing panel. The fan channel is clamped between the first fixing panel and the second fixing panel. First holes are provided at the four corners of the first fixing panel and the second fixing panel, and the fixing bolts are installed in the first holes.

[0007] The fixing bolt includes a cross-shaped female head, an inclined-thread neck chamfer, a bolt rod, and a threaded rod that are coaxially and integrally connected in sequence. The lengths of the inclined-thread neck chamfer and the bolt rod are the same as the thickness of the fan main body. The bolt rod is inserted into the first hole, the inclined-thread neck chamfer abuts against the inside of the first hole, the threaded rod directly screws tightly the fixing plate, or the threaded rod is threadedly connected to a first fastening nut, and the cooperation between the first fastening nut and the bolt rod clamps the fixing plate to fix the fan main body and the fixing plate.

[0008] Preferably, the surface of the bolt rod of the fixing bolt is provided with threads.

[0009] Preferably, a second fastening nut and a third fastening nut are threadedly sleeved on the bolt rod between the first fixing panel and the second fixing panel, and the cooperation between the third fastening nut and the first fastening nut clamps the second fixing panel and the fixing plate.

[0010] Preferably, the bolt rod and the chamfer of the inclined thread neck of the fixing bolt are both made of conductive materials.

[0011] Preferably, a threaded head is provided at one end of the bolt rod away from the cross-shaped female head. The threaded head is in threaded cooperation with the first fastening nut and is electrically connected at the same time. An insulating threaded sleeve is sleeved on the bolt rod.

[0012] Preferably, one side of the first fastening nut is electrically connected to the conductive circuit provided on the fixing plate.

[0013] A fixing method for a fan fixing device, the steps of the fixing method are as follows:

[0014] S1. Pass the fixing bolt through the first fixing panel and the second fixing panel of the fan body, and make the chamfer of the inclined thread neck of the fixing bolt abut against the first hole;

[0015] S2. Then pass the threaded rod of the fixing bolt through the second hole of the fixing plate;

[0016] S3. Tighten the first fastening nut on the threaded rod, and use the interference fit between the chamfer of the inclined thread neck and the first hole to fix the fixing plate and the fan body together.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the integrated design of the fixing bolt, combined with the cooperation of the chamfer of the inclined thread neck and the multi-stage fastening nut, rapid installation without precise positioning requirements is achieved. The chamfer of the inclined thread neck is locked into the hole by interference fit, effectively preventing loosening caused by installation deviation or vibration, and significantly improving the fixing stability;

[0019] 2. The bolt rod and the chamfer of the inclined thread neck made of conductive materials, in cooperation with the conductive metal ring and the embedded circuit in the first hole, directly realize the conductive connection between the fan motor and the power supply line of the fixing plate, greatly reducing the exposed wires and improving the safety and aesthetics of the equipment;

[0020] 3. The thread density of the chamfer of the inclined thread neck is lower than that of the self-tapping screw, and the slot is deeper. During the locking process, the extrusion force is dispersed, avoiding cracking of the plastic hole due to stress concentration and extending the service life of the device;

[0021] 4. Through the threaded cooperation between the second fastening nut, the third fastening nut and the bolt rod, the clamping force can be flexibly adjusted to adapt to fixing plates of different thicknesses, expanding the general scenarios of the device;

[0022] 5. An insulating threaded sleeve is added to the bolt rod to isolate the conductive part from the non-conductive structure, prevent short circuits in the circuit, and further ensure the safe operation of the equipment. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the first embodiment of the present invention;

[0024] Figure 2 It is a side top view of the first embodiment of the present invention;

[0025] Figure 3 It is a side view of the first embodiment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the fixing bolt in the first embodiment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the second embodiment of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the third embodiment of the present invention;

[0029] Figure 7 It is a side cross-sectional view of the third embodiment of the present invention.

[0030] In the figure: 1. Fan main body; 11. First fixing panel; 12. Fan channel; 13. Second fixing panel; 14. First hole; 15. Conductive metal ring; 16. Embedded circuit; 2. Fixing bolt; 21. Bolt rod; 211. Thread head; 22. Cross recessed hex nut; 23. Chamfer of the inclined thread neck; 24. Threaded rod; 25. First fastening nut; 26. Second fastening nut; 27. Third fastening nut; 29. Insulating threaded sleeve; 3. Fixing plate; 31. Second hole. Detailed Embodiment

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] Please refer to Figures 1-4, the present invention provides a technical solution: a fan fixing device and a fixing method, including: a fan main body 1, fixing bolts 2 are installed at four corners of the fan main body 1. The fan main body 1 includes a first fixing panel 11, a fan passage 12 and a second fixing panel 13. The fan passage 12 is clamped between the first fixing panel 11 and the second fixing panel 13. First holes 14 are provided at the four corners of the first fixing panel 11 and the second fixing panel 13, and the fixing bolts 2 are installed in the first holes 14;

[0034] The fixing bolt 2 includes a cross-shaped female head 22, a chamfered inclined-thread neck 23, a bolt rod 21 and a threaded rod 24 that are coaxially and integrally connected in sequence. The lengths of the chamfered inclined-thread neck 23 and the bolt rod 21 are the same as the thickness of the fan main body 1. The bolt rod 21 is inserted into the first hole 14, the chamfered inclined-thread neck 23 abuts against the inside of the first hole 14, and the threaded rod 24 is directly screwed onto the fixing plate 3, or the threaded rod 24 is threadedly connected to the first fastening nut 25. The fixing plate 3 is clamped through the cooperation of the first fastening nut 25 and the bolt rod 21 to realize the fixed installation of the fan main body 1 and the fixing plate 3. The fixing plate 3 can be any component that needs to install a fan;

[0035] The diameter of the chamfered inclined-thread neck 23 is slightly larger than that of the first hole 14. The chamfered inclined-thread neck 23 can lock the inclined part into the first hole 14 in an interference fit manner by means of the torque of the locking screw, without considering the positioning problem or the shaking problem of the fan installation. The thread density of the chamfered inclined-thread neck 23 is smaller than that of a self-tapping screw, and the slot is larger than that of a self-tapping screw, so the plastic first hole 14 will not be squeezed and burst.

[0036] Embodiment 2

[0037] Please refer to Figure 5 , the present invention provides a technical solution: a fan fixing device and a fixing method, including: a fixing bolt 2. The difference between this embodiment and Embodiment 1 is that the surface of the bolt rod 21 of the fixing bolt 2 is provided with threads, and the second fastening nut 26 and the third fastening nut 27 are threadedly sleeved between the first fixing panel 11 and the second fixing panel 13. When the diameter of the bolt rod 21 of the fixing bolt 2 is much smaller than the first hole 14 and the second hole 31 of the fixing plate 3, the first fixing panel 11 is clamped through the cooperation of the second fastening nut 26 and the chamfered inclined-thread neck 23, and the second fixing panel 13 and the fixing plate 3 are clamped through the cooperation of the third fastening nut 27 and the first fastening nut 25, so as to realize the fixed installation of the fan main body 1 and the fixing plate 3;

[0038] During the assembly process, the bolt rod 21 is inserted into the first fixing panel 11, then the second fastening nut 26 and the third fastening nut 27 are installed, and then the bolt rod 21 is inserted into the second fixing panel 13 and the fixing plate 3, and then the second fastening nut 26, the third fastening nut 27 and the first fastening nut 25 are tightened.

[0039] Embodiment III

[0040] Please refer to Figures 6-7 , the present invention provides a technical solution: a fan fixing device and a fixing method, including: a fan main body 1 and a fixing bolt 2. The difference between this embodiment and Embodiment I and Embodiment II is that two embedded circuits 16 are provided on the first fixing panel 11 of the fan main body 1. One end of the embedded circuit 16 is electrically connected to the fan motor inside the fan main body 1. A conductive metal ring 15 is provided in the first hole 14, and the conductive metal ring 15 is electrically connected to the embedded circuit 16. The conductive metal ring 15 can prevent the chamfer of the inclined thread neck 23 from tearing the first hole 14, and at the same time is electrically connected to the chamfer of the inclined thread neck 23;

[0041] The difference between this embodiment and Embodiment I and Embodiment II is also that the bolt rod 21 and the chamfer of the inclined thread neck 23 of the fixing bolt 2 are both made of conductive materials, and a threaded head 211 is provided at one end of the bolt rod 21 away from the cross-shaped mother head 22. The threaded head 211 is threadedly engaged and electrically connected to the first fastening nut 25. An insulating thread sleeve 29 is sleeved on the bolt rod 21, and the insulating thread sleeve 29 is threadedly connected to the second fastening nut 26 and the third fastening nut 27 to achieve the function of Embodiment II;

[0042] One side of the first fastening nut 25 is electrically connected to the conductive circuit provided on the fixing plate 3, realizing the electrical connection between the fan motor of the fan main body 1 and the power supply, reducing the use of exposed power supply lines, and making the circuit of the fan main body 1 more concise.

[0043] In this embodiment, the fan main body 1 is electrically conducted through the fixing bolt 2, reducing the use of exposed power supply lines and making the circuit of the entire device more concise.

[0044] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan fixing device, comprising: Fan main body (1), fixing bolts (2) are installed at four corners of the fan main body (1). The fan main body (1) includes a first fixing panel (11), a fan channel (12) and a second fixing panel (13). The fan channel (12) is clamped between the first fixing panel (11) and the second fixing panel (13). First holes (14) are provided at four corners of the first fixing panel (11) and the second fixing panel (13), and the fixing bolts (2) are installed in the first holes (14). It is characterized in that: the fixing bolt (2) includes a cross-shaped female head (22), a chamfered inclined-thread neck (23), a bolt rod (21) and a threaded rod (24) which are coaxially and integrally connected in sequence. The lengths of the chamfered inclined-thread neck (23) and the bolt rod (21) are the same as the thickness of the fan main body (1). The bolt rod (21) is inserted into the first hole (14), the chamfered inclined-thread neck (23) abuts against the inside of the first hole (14), the threaded rod (24) is directly screwed onto the fixing plate (3), or the threaded rod (24) is threadedly connected to a first fastening nut (25), and the cooperation between the first fastening nut (25) and the bolt rod (21) clamps the fixing plate (3) to fix the fan main body (1) and the fixing plate (3).

2. The fan fixing device according to claim 1, characterized in that, Threads are provided on the surface of the bolt rod (21) of the fixing bolt (2).

3. A fan fixing device according to claim 2, characterized in that, A second fastening nut (26) and a third fastening nut (27) are threadedly sleeved on the bolt rod (21) of the fixing bolt (2) between the first fixing panel (11) and the second fixing panel (13), and the cooperation between the third fastening nut (27) and the first fastening nut (25) clamps the second fixing panel (13) and the fixing plate (3).

4. The fan fixing device according to claim 3, wherein, Both the bolt rod (21) and the chamfered inclined-thread neck (23) of the fixing bolt (2) are made of conductive materials.

5. The fan fixing device according to claim 4, characterized in that, A threaded head (211) is provided at one end of the bolt rod (21) away from the cross-shaped female head (22). The threaded head (211) is in threaded cooperation with the first fastening nut (25) and is electrically connected at the same time. An insulating threaded sleeve (29) is sleeved on the bolt rod (21).

6. The fan fixing device according to claim 5, characterized in that, One side of the first fastening nut (25) is electrically connected to a conductive circuit provided on the fixing plate (3).

7. A fixing method of the fan fixing device according to claim 1, characterized in that, The method steps are as follows: S1. Pass the fixing bolt (2) through the first fixing panel (11) and the second fixing panel (13) of the fan main body (1) so that the chamfered inclined-thread neck (23) of the fixing bolt (2) abuts against the first hole (14). S2. Then pass the threaded rod (24) of the fixing bolt (2) through the second hole (31) of the fixing plate (3). S3. Screw the first fastening nut (25) onto the threaded rod (24), and utilize the interference fit between the chamfered inclined-thread neck (23) and the first hole (14) to fix the fixing plate (3) and the fan main body (1) together.

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