Anti-cutting fan structure

Abstract

The utility model provides an anti-cutting fan structure. The anti-cutting fan structure comprises a fan blade and at least one anti-cutting sheet, the fan blade comprises a hub, a ring and a plurality of blades connected between the hub and the ring, and a gap is formed between every two blades. And the anti-cutting sheet is connected between the two blades. According to the anti-cutting fan structure, the anti-cutting piece is used for blocking fingers, and when the fingers accidentally stretch into the gap between the two blades or touch the blades of the fan blades, the fingers are really protected from being cut.

Description

Technical Field

[0001] The utility model relates to a fan, in particular to a fan structure which is resistant to cutting. Background Art

[0002] The small fan used in electronic devices, also known as the cooling fan, is an important component inside the electronic device. Its main function is to introduce external cold air and exhaust hot air, further improving the cooling efficiency to maintain a reasonable operating temperature inside the electronic device.

[0003] When an electronic device is abnormal or has a problem with heat dissipation, it is usually checked with the device turned on. During the inspection, the repairer will touch the electronic components with his fingers to sense the temperature generated by the electronic components themselves to determine whether the electronic components are operating normally (overheated or not), or use his fingers to open the cables connecting the circuit boards to find the problematic electronic components.

[0004] However, when checking, touching or pulling apart a defective electronic component with fingers, the repairman's fingers often accidentally reach into or touch the blades of the fan and are cut by the rotating blades, causing finger injuries.

[0005] Therefore, how to improve the fan structure so that when the blades rotate, fingers are not cut by the rotating blades when they are accidentally inserted into or touched by the blades is a problem to be solved by this application. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model aims to provide a fan structure that prevents cuts, wherein at least one anti-cut sheet is connected between two blades of the fan blade, so as to prevent the fingers of the repairer from accidentally extending into the gap between the two blades or touching the blades, thereby effectively protecting the fingers of the repairer from being cut. To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] (II) Technical solution

[0009] A cut-proof fan structure is characterized in that it includes a fan blade and at least one cut-proof sheet, wherein the fan blade includes a hub and a ring, and a plurality of blades connected between the hub and the ring, and each blade has a gap between them; the cut-proof sheet is connected between two blades.

[0010] Preferably, the anti-cut sheet has an adjacent edge, a pair of edges and a beveled edge, the connection between the opposite edge and the beveled edge is connected to the edge of the blade, and the adjacent edge of the anti-cut sheet is connected to the blade surface of another blade, so that the anti-cut sheet is connected to the two blades perpendicularly to each other.

[0011] Preferably, when the anti-cut piece is connected to the two blades, the height of the hypotenuse of the anti-cut piece is equal to the height of the loop.

[0012] Preferably, the anti-cut piece is an arc-shaped right triangle.

[0013] Preferably, the fan structure further includes a base, which is disc-shaped, and a plurality of fixing parts are convexly provided on its circumference, and each fixing part has a perforation.

[0014] Preferably, a wire routing frame is convexly provided on the circumference of the base.

[0015] Preferably, a central shaft is provided on the other surface of the base, a bearing is arranged inside the central shaft, and a circuit board and a coil are installed between the central shaft and the base.

[0016] Preferably, the wire routing frame is used for laying the wires of the circuit board arranged on the base to extend outside the fan blades or the fan frame.

[0017] Preferably, a shaft center is provided at the center inside the hub, and the shaft center is pivotally connected to the bearing arranged inside the central shaft.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present application has the following effects: at least one anti-cut piece is connected between the two blades, and the anti-cut piece fills the gap entrance between the two blades, so as to form a blocking effect on the gap entrance, so that when the user checks or repairs, the fingers are not easily inserted into the gap between the two blades, so as to effectively protect the fingers of the repairer from being cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following describes the present invention in further detail with reference to the accompanying drawings in conjunction with embodiments.

[0021] Figure 1 is a three-dimensional external view of Embodiment 1;

[0022] Figure 2 is a bottom view of Embodiment 1;

[0023] Figure 3 is a top view of Embodiment 1;

[0024] Figure 4 is a cross-sectional view of Embodiment 1;

[0025] Figure 5 is a three-dimensional external view of Embodiment 2;

[0026] Figure 6 is a top view of Embodiment 2;

[0027] Figure 7 It is a schematic cross-sectional view of the second embodiment.

[0028] Explanation of the reference numerals in the drawings:

[0029] 1. Fan blade; 11. Hub; 12. Ring;

[0030] 13. Blade; 131. Edge part; 132. Blade surface;

[0031] 14. Gap; 15. Axis; 2. First anti-cutting piece;

[0032] 21. First adjacent side; 22. First opposite side; 23. First hypotenuse;

[0033] 2a. Second anti-cutting piece; 21a. Second adjacent side; 22a. Second opposite side;

[0034] 23a. Second hypotenuse; 3. Base; 31. Fixing part;

[0035] 32. Perforation; 33. Cable rack; 34. Central axis. Specific implementation manner

[0036] The detailed description and technical content of the present application are described below in conjunction with the accompanying drawings. However, the accompanying drawings are only for reference and illustration, and are not intended to limit the present application.

[0037] Please refer to Figures 1-4 , which are the external three-dimensional schematic diagram, bottom view schematic diagram, top view schematic diagram and cross-sectional schematic diagram of the first embodiment of the application. As shown in the figure: The anti-cutting fan structure of the present application includes: a fan blade 1, at least one anti-cutting piece 2 and a base 3. Among them, the base 3 is used to carry and pivotally connect the fan blade 1, and this fan blade can rotate on the base 3. At the same time, at least one anti-cutting piece 2 is connected to the blades 13. During the rotation of the fan blade 1, the fingers of the user will not be cut by the rotating force of the blades 13 during maintenance inspection or installation. Specifically:

[0038] The fan blade 1 includes a hub 11 and a ring 12, and a plurality of blades 13 connected between the hub 11 and the ring 12. There is a gap 14 through which air flow passes between each blade 13. A central axis 15 is provided at the center inside the hub 11, and this central axis 15 is pivotally connected to the central axis (not shown in the figure) of the base 3.

[0039] At least one first anti-cutting piece 2 is connected between two blades 13. The first anti-cutting piece 2 is an arc-shaped right triangle. The first anti-cutting piece 2 has an adjacent side 21, an opposite side 22 and a hypotenuse 23. The connection of the opposite side 22 and the hypotenuse 23 is connected to the edge part 131 of the blade 13, while the adjacent side 21 of the first anti-cutting piece 2 is connected to the blade surface 132 of another blade 13, so that the first anti-cutting piece 2 is perpendicularly connected to these two blades 13 to fill the gap between the two blades 13, which can prevent the fingers of the user or maintainer from reaching too far into or touching the fan blades 1 and being cut by the blades 13. When the first anti-cutting piece 2 is connected to the two blades 13, the height of the hypotenuse 23 is equal to the height of the ring 12.

[0040] The base 3 is disc-shaped, and a plurality of fixing parts 31 are convexly provided on its circumference. Each of these fixing parts 31 has a through hole 32 for fixing to a fan frame (not shown in the figure) or an external device. In addition, a wire routing frame 33 is provided on the circumference of the base 3 for the wires of a circuit board (not shown in the figure) arranged on the base 3 to be erected and extended outside the fan blade 1 or the fan frame (not shown in the figure). Also, a central shaft 34 is provided on the other surface of the base 3, and a bearing (not shown in the figure) can be arranged inside the central shaft 34 to pivotally connect the axis 15 of the fan blade 1. A circuit board (not shown in the figure) and a coil (not shown in the figure) can be installed between the central shaft 34 and the base 3 to drive the fan blade 1 to rotate.

[0041] Please refer to Figure 3 、 4 which are the top view schematic diagram and the cross-sectional schematic diagram of the first embodiment, and also refer to Figure 1 、 2 . As shown in the figure: After the circuit board (not shown in the figure) on the base 3 of this embodiment is powered on, the power is transmitted to the coil (not shown in the figure) to drive the fan blade 1 to rotate. Since it is a known technology for the circuit board to control the rotation of the fan blade 1, it will not be elaborated here.

[0042] When checking whether there is an abnormality in an electronic device (not shown in the figure), the check is always carried out in the powered-on state to check whether the internal components of the electronic device (not shown in the figure) or the operation of the cooling fan is normal. And during the inspection process, when the user's or maintainer's hand accidentally reaches into the gap 14 between the two blades 13 of the fan blade 1 or touches the blade 13 of the fan blade 1, the fingers will be cut by these rotating blades 13. In this embodiment, at least one first anti-cutting piece 2 is connected between the two blades 13 to fill the entrance of the gap 14 between the two blades 13 with the first anti-cutting piece 2, so as to form a blocking effect on the entrance of the gap 14, making it difficult for the fingers to enter the gap 14 between the two blades 13 when the user is checking or maintaining, so as to effectively protect the fingers of the maintainer from being cut.

[0043] Please refer to Figures 5-7 , which are the three-dimensional schematic diagram, top view schematic diagram and cross-sectional schematic diagram of the second embodiment of the application. As shown in the figure; this embodiment is generally the same as the first embodiment, the difference is that in the second embodiment, the anti-cutting piece two 2a replaces the anti-cutting piece one 2 in the first embodiment, and the length of the anti-cutting piece two 2a in this embodiment is shorter than the length of the anti-cutting piece one 2 in the first embodiment. The anti-cutting piece two 2a also has an adjacent side two 21a, a pair of sides two 22a and a hypotenuse two 23a. The connection of the pair of sides two 22a and the hypotenuse two 23a is connected to the edge part 131 of the blade 13, and the adjacent side two 21a of the anti-cutting piece two 2a is connected to the blade surface 132 of another blade 13. Since the length of the anti-cutting piece two 2a in the second embodiment is shorter than the length of the anti-cutting piece one 2 in the first embodiment, it is easier to manufacture, and the relative manufacturing cost is also lower.

[0044] And the anti-cutting piece two 2a in the second embodiment also fills the entrance of the gap 14 between the two blades 13, so as to form a blocking effect on the entrance of the gap 14, so that when the user checks or repairs, the fingers are not easily inserted into the gap 14 between the two blades 13, so as to effectively protect the fingers of the repairer from being cut.

[0045] The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. Therefore, all equivalent structural changes made by using the content of the specification and drawings of the present application are included in the scope of the rights of the present application. This is hereby stated.

Claims

1. A fan structure that is resistant to cuts, characterized in that: include: A fan blade comprises a hub and a ring, and a plurality of blades connected between the hub and the ring, and a gap is formed between each blade; At least one cut-proof sheet is connected between the two blades.

2. The cut-resistant fan structure according to claim 1, characterized in that: The anti-cut sheet has an adjacent edge, a pair of edges and an oblique edge. The connection between the opposite edge and the oblique edge is connected to the edge of the blade, and the adjacent edge of the anti-cut sheet is connected to the blade surface of another blade, so that the anti-cut sheet and the two blades are connected perpendicularly to each other.

3. The cut-resistant fan structure according to claim 2, characterized in that: When the anti-cutting sheet is connected to the two blades, the height of the hypotenuse of the anti-cutting sheet is equal to the height of the ring.

4. The cut-resistant fan structure according to claim 1, characterized in that: The anti-cutting sheet is an arc-shaped right-angled triangle.

5. The cut-resistant fan structure according to claim 1, characterized in that: The fan structure further includes a base, which is in the shape of a disk and has a plurality of fixing parts protruding from its circumference, and each fixing part has a through hole.

6. The cut-resistant fan structure according to claim 5, characterized in that: A wiring rack is convexly arranged on the circumference of the base.

7. The cut-resistant fan structure according to claim 6, characterized in that: A central axis is disposed on the other side of the base, a bearing is disposed inside the central axis, and a circuit board and a coil are installed between the central axis and the base.

8. The cut-resistant fan structure according to claim 7, characterized in that: The wiring rack is used to arrange the wires of the circuit board arranged on the base so as to extend outside the fan blades or the fan frame.

9. The cut-resistant fan structure according to claim 8, characterized in that: An axis is arranged at the center of the wheel hub, and the axis is pivotally connected to a bearing arranged inside the middle shaft.

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