Electric connection structure of fan

Abstract

The invention provides a fan electric connection structure which comprises a fan frame body, at least one soft board and at least one outer circuit board, an inner circuit board is arranged in the fan frame body, an inner channel is arranged on the fan frame body, the soft board is arranged in the inner channel of the fan frame body, one end of the soft board is electrically connected with the inner circuit board, and the other end of the soft board is electrically connected with the outer circuit board. And the outer circuit board is arranged on the outer side of the fan frame body and is electrically connected with the other end of the soft board, so that the assembly time and the assembly cost consumed by arranging and arranging wires and welding the wires one by one in the prior art can be saved, and the condition that the soft board falls off due to the pulling of an external force can be avoided.

Description

Technical Field

[0001] The present invention relates to a fan, and more particularly to an electrical connection structure for the fan which can save assembly time and cost by eliminating the need for wiring and welding wires one by one. Background Art

[0002] The fan is a commonly used system cooling device and is often used in electronic equipment (such as servers or computers) to provide forced cooling. In particular, fans with more than two motors provide better forced cooling effects. However, the control circuit board signals in the fan generally need to be extended to a motherboard of an external host device for electrical connection, and the control circuit board and the motherboard are electrically connected using a gold finger printed circuit board. The conventional fan has a gold finger printed circuit board fixed to the fan frame, and the control circuit board in the fan and the gold finger printed circuit board are electrically connected by multiple wires. The wires of the control circuit board must be led out of the fan frame and soldered to the gold finger printed circuit board, and the wires need to be arranged and managed inside the fan frame. However, the space available for arrangement and management of the wires inside the fan frame is limited, which is not convenient for arranging and managing the wires. In addition, when the arrangement and management of the wires are difficult, the wires need to be soldered to the gold finger printed circuit board one by one, which undoubtedly leads to problems such as significantly increased assembly time and assembly cost.

[0003] Therefore, the inventors of this case and related manufacturers in this industry are eager to research and improve the wiring arrangement and management issues within the limited space of the fan and the increase in assembly time and cost caused by the difficulty of soldering. Summary of the Invention

[0004] Therefore, to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a fan electrical connection structure that uses a flexible printed circuit board for electrical connection, effectively utilizes the limited space within the fan, and eliminates the assembly time and cost consumed by wiring and soldering.

[0005] Another object of the present invention is to provide a fan electrical connection structure that can be completely attached to prevent the flexible printed circuit board from being pulled off by external forces.

[0006] Another object of the present invention is to provide a fan electrical connection structure that can reduce wiring and cable management space, thereby increasing the fan blade axis distance or reducing the fan frame installation volume.

[0007] To achieve the above-mentioned purpose, the present invention provides a fan electrical connection structure, comprising a fan frame, at least one flexible board and at least one external circuit board. An internal circuit board is arranged inside the fan frame, and the fan frame has an internal channel that can connect the inside and outside of the fan frame.

[0008] The flexible board is arranged in the inner channel of the fan frame and has a first connection portion formed at one end thereof for electrically connecting to the inner circuit board, and a second connection portion formed at the other end thereof for electrically connecting to the outer circuit board, so that the inner circuit board is electrically connected to the outer circuit board through the flexible board.

[0009] The frame has an outer surface with a groove formed thereon, and the soft board is accommodated in the groove.

[0010] The outer surface is provided with at least one fixing hole, and the outer circuit board is fixed to the fan frame through at least one fixing component passing through the fixing hole.

[0011] Wherein, a connection joint is provided on the second connection portion, and the flexible circuit board is electrically connected to the external circuit board via the connection joint.

[0012] The external circuit board has a first connecting portion and a second connecting portion, the first connecting portion is electrically connected to the second connecting portion, and the second connecting portion is exposed outside the fan frame.

[0013] Wherein, the second docking portion has a plurality of metal terminals.

[0014] Wherein, the metal terminal is a metal conductor formed by stamping.

[0015] With the fan electrical connection structure of the present invention, a flexible circuit board is used to electrically connect the internal circuit board and the external circuit board through internal channels. The external circuit board is electrically connected to the outside via metal terminals. This effectively eliminates the assembly time and cost of wiring and soldering wires one by one, and further prevents the flexible circuit board from being pulled off by external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional assembly schematic diagram of the fan electrical connection structure of the present invention.

[0017] Figure 2 FIG. 1 is a schematic exploded perspective view of the fan electrical connection structure of the present invention from another angle.

[0018] Figure 3 It is a schematic planar cross-sectional view of the fan electrical connection structure of the present invention.

[0019] Figure 4 FIG2 is a schematic three-dimensional assembly diagram of another embodiment of the fan electrical connection structure of the present invention.

[0020] Explanation of the accompanying reference numerals: fan electrical connection structure 1; fan frame 2; inner circuit board 21; outer surface 22; coupling boss 221; fixing hole 23; inner channel 24; soft board 3; adhesive layer 31; first connecting portion 32; second connecting portion 33; connecting joint 34; outer circuit board 4; first docking portion 41; second docking portion 42; metal terminal 421; docking hole 43; fixing assembly 44. DETAILED DESCRIPTION

[0021] The above-mentioned objectives and structural and functional characteristics of the present invention will be described with reference to the preferred embodiments shown in the accompanying drawings.

[0022] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, they are respectively a three-dimensional combination schematic diagram of the fan electrical connection structure of the present invention, a three-dimensional decomposition schematic diagram from another angle, and a plane cross-sectional schematic diagram. As shown in the figure, the present invention provides a fan electrical connection structure 1, comprising: a fan frame 2 and at least one flexible board 3 and at least one external circuit board 4.

[0023] The fan frame 2 is internally provided with at least one internal circuit board 21. In this embodiment, the fan electrical connection structure 1 is illustrated as a dual-motor configuration. The fan frame 2 is illustrated as an outer frame having dual motors therein, and the internal circuit board 21 electrically connects the dual motors, but the embodiment is not limited thereto. The fan frame 2 has an outer surface 22 formed thereon, and at least one fixing hole 23 is formed thereon. An inner channel 24 is formed thereon, radially connecting the interior and exterior of the frame. Specifically, the inner channel 24 extends outward to the outer surface 22 and inward to the inner circuit board 21.

[0024] The above-mentioned flexible board 3 is arranged in the inner channel 24, and one end thereof extends outside through the inner channel 24 and is arranged on the outer surface 22. An adhesive layer 31 is provided on one side of the flexible board 3. The flexible board 3 is attached to the outer surface 22 by the adhesive layer 31 and can be completely attached to the outer surface of the fan frame 2. A groove can also be formed on the outer surface 22 for the flexible board 3 to be arranged. At least one coupling protrusion 221 can be formed on the outer surface 22 for the flexible board 3 to be positioned and assembled. In addition, the flexible board 3 has a first connecting portion 32 and a second connecting portion 33. The flexible board 3 is electrically connected to the inner circuit board 21 by the first connecting portion 32.

[0025] The external circuit board 4 is disposed on the fan frame 2 and has a first docking portion 41 and a second docking portion 42. The second docking portion 42 has a plurality of metal terminals 421, which are metal conductors formed by stamping. At least one docking hole 43 is formed on the external circuit board 4. The docking hole 43 communicates with the fixing hole 23 and is fixed by at least one fixing component 44. The flexible board 3 is electrically connected to the external circuit board 4 via the second connecting portion 33, so that the external circuit board 4 is electrically connected to the internal circuit board 21 via the flexible board 3, and the second docking portion 42 is exposed outside the fan frame 2.

[0026] Furthermore, the specific assembly relationship between the fan frame 2, the flexible board 3, and the external circuit board 4 is as follows: the external circuit board 4 can be first assembled on the fan frame 2, and the docking hole 43 is connected to the fixing hole 23. Then, the fixing assembly 44 is passed through the docking hole 43 to fix the external circuit board 4 to the fan frame 2. The flexible board 3 is then placed in the inner channel 24, with the first connecting portion 32 positioned opposite the position of the inner circuit board 21. The flexible board 3 is attached to the outer surface 22 via the adhesive layer 31. The first connecting portion 32 is then soldered to the inner circuit board 21, and the second connecting portion 33 is soldered to the first docking portion 41 of the external circuit board 4. This allows the inner circuit board 21 to be electrically connected to the external circuit board 4 via the flexible board 3, allowing the inner circuit board 21 to operate normally.

[0027] Thus, the fan electrical connection structure 1 of the present invention, through the design of the internal channel provided in the frame, allows the flexible board 3 to be electrically connected to the internal circuit board 21 and the external circuit board 4, thereby eliminating the assembly time and cost consumed by individually routing and soldering wires in conventional fans. In addition, the flexible board 3 is completely attached to the outer surface of the fan frame 2, which can effectively prevent the flexible board 3 from falling due to external forces.

[0028] Furthermore, the fan electrical connection structure 1 of the present invention has the advantage of eliminating the need to individually route wires within the fan frame 2, thereby reducing the space required for routing wires within the fan frame 2. Conversely, within a fan frame 2 of the same size, the existing wiring space can be used to increase the fan blade wheelbase. By reducing the space required for routing wires, the installation volume of the fan frame 2 can also be reduced.

[0029] like Figure 4 In another embodiment shown, a connection joint 34 can be provided on the second connection portion 33 of the flexible board 3. The connection joint 34 is combined with the fan frame 2, and the external circuit board 4 can be directly plugged into the connection joint 34, so that the internal circuit board 21 is electrically connected to the external circuit board 4 through the flexible board 3 through the connection joint 34.

[0030] According to the above, the present invention has the following advantages compared to the conventional technology:

[0031] 1. Eliminate the assembly time and cost of wiring and soldering the wires one by one in conventional fans.

[0032] 2. It can effectively prevent the flexible board from falling due to external force.

[0033] 3. The fan blade wheelbase can be increased or the fan frame volume can be reduced.

[0034] The above description has been a detailed description of the present invention. However, the above description is only a preferred embodiment of the present invention and should not be used to limit the scope of the present invention. In other words, all equivalent changes and modifications made based on the present invention should still fall within the scope of the patent of the present invention.

Claims

1. A fan electrical connection structure, characterized in that: include: A fan frame having an inner circuit board disposed therein, the fan frame having an inner channel connecting the outside and the inside of the fan frame; At least one flexible board is arranged in the inner channel of the fan frame, the flexible board has a first connection portion electrically connected to the inner circuit board, and the flexible board has a second connection portion passing through the outside to electrically connect to an outer circuit board, so that the inner circuit board is electrically connected to the outer circuit board through the flexible board.

2. The fan electrical connection structure according to claim 1, wherein: The frame body has an outer surface formed with a groove, and the soft board is arranged in the groove.

3. The fan electrical connection structure according to claim 2, wherein: The outer surface is provided with at least one fixing hole, and the outer circuit board is fixed on the fan frame through at least one fixing component passing through the fixing hole.

4. The fan electrical connection structure according to claim 1, wherein: The second connection portion is provided with a connection joint, and the flexible circuit board is electrically connected to the external circuit board via the connection joint.

5. The fan electrical connection structure according to claim 1, wherein: The external circuit board has a first connecting portion and a second connecting portion. The first connecting portion is electrically connected to the second connecting portion, and the second connecting portion is exposed outside the fan frame.

6. The fan electrical connection structure according to claim 5, wherein: The second docking portion has a plurality of metal terminals.

7. The fan electrical connection structure according to claim 6, wherein: The metal terminal is a metal conductor formed by stamping.

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