A cooling fan for a charger with an anti-drop structure

Abstract

The present invention discloses a heat dissipation fan for a charger with an anti-slip structure, which belongs to the technical field of chargers, and includes a first fan frame, an oil-containing bearing, a stator and a plurality of fan blades, wherein the first fan frame includes a first frame plate, a first connecting block, a first mounting frame, a clamping ring and an edge guard, and a second fan frame acting on the plurality of fan blades is arranged on the top of the plurality of fan blades, and the upper structure of the second fan frame matches the upper structure of the first fan frame, and the second fan frame includes a second frame plate, a second connecting block and a second mounting frame, and a threaded hole is provided at one end of the second connecting block away from the second frame plate, and an adjusting block is threadedly connected in the threaded hole of each of the second connecting blocks. When the heat dissipation fan for a charger with an anti-slip structure is in use, the influence of the aging of the first frame plate and the second frame plate on the rotation of the plurality of fan blades can be reduced to a certain extent, thereby reducing the influence of aging on the service life of the charger.

Description

Technical Field

[0001] The invention belongs to the technical field of chargers, and in particular relates to a heat dissipation fan for a charger with an anti-slip structure. Background Art

[0002] Electronic devices often generate a lot of heat during the charging process. Therefore, a cooling fan is often installed on the charger during manufacturing. For example, electric vehicle chargers and mobile phone wireless chargers of some manufacturers all add a cooling fan during manufacturing to discharge the heat generated during use by accelerating air flow. The fan frames of existing cooling fans are all made of plastic. Long-term operation in a hot environment and aging of the plastic itself will cause the fan frame of the cooling fan to deform. At this time, the fan frame has a poor fixing effect on the cooling fan, and the cooling fan is difficult to maintain working, thus affecting the service life of the charger.

[0003] Nowadays, there have been innovations in cooling fans, such as the technical proposal with application number 202011150195.X, which discloses a fan for cooling electronic equipment, which "is designed according to the data of the first and second upper and lower chord lengths and the curvature data, so that the airfoil composition of the fan blade curved surface has the characteristics of low noise compared with the fans in the prior art at the same air volume, better heat dissipation effect at the same noise level, less energy consumption, long service life and reliability". It increases the service life of the cooling fan and reduces the heat generated by itself by changing the curvature of the fan blades, but this technical proposal cannot make adjustments to the aging fan frame to a certain extent, and the cooling fan will still become unstable due to aging of the fan frame, which will affect the life of the charger. Summary of the invention

[0004] The object of the present invention is to provide a cooling fan for a charger with an anti-detachment structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a heat dissipation fan for a charger with an anti-slip structure, comprising a first fan frame, an oil-containing bearing, a stator and a plurality of fan blades, wherein the plurality of fan blades are distributed in an annular array, a connecting cover is provided at the center of the annular shape of the plurality of fan blades, the connecting cover is a hollow structure with an opening at the bottom, the plurality of fan blades are fixed on the outer side wall of the connecting cover cavity, a permanent magnet is provided in the connecting cover cavity, and the permanent magnet is fixedly clamped on the inner side wall of the connecting cover cavity;

[0006] The first fan frame comprises:

[0007] A first frame plate providing support for the entire cooling fan;

[0008] A first connecting block for inserting fixing pins and fixing the position of the fan blades;

[0009] A first mounting frame mounted at the center of the first frame plate;

[0010] A collar used to cooperate with the connecting cover to achieve a certain sealing effect;

[0011] Edge guards that protect several fan blades.

[0012] The oil-containing bearing is installed at the top center of the first mounting frame, and the stator is sleeved on the outer wall of the oil-containing bearing.

[0013] In one embodiment, a second fan frame acting on the plurality of fan blades is disposed on the top of the plurality of fan blades, and the upper structure of the second fan frame cooperates with the upper structure of the first fan frame, including:

[0014] a second frame plate for matching with the first frame plate;

[0015] Four second connection blocks for matching with the four first connection blocks;

[0016] A second mounting bracket is installed at the center of the second frame plate to match the position of the first mounting bracket.

[0017] In one embodiment, a threaded hole is formed at one end of the four second connection blocks away from the second frame plate, and an adjusting block is threadedly connected to the threaded hole of each of the second connection blocks.

[0018] In one of the embodiments, each second connection block on the second frame plate is provided with a limiting plug hole penetrating through the second frame plate and the second connection block.

[0019] In one of the embodiments, each of the above-mentioned adjustment blocks is provided with a plurality of limit holes, and a latch is inserted into one of the limit holes on each adjustment block and the limit plugging hole at the corresponding position on the second frame plate.

[0020] In one of the embodiments, a shaft column is rotatably inserted on the first frame plate, a retaining ring groove is provided at the bottom of the shaft column, a notch is provided at the bottom of the first frame plate, the retaining ring groove of the shaft column is located in the notch of the first frame plate, and a positioning retaining ring is sleeved in the retaining ring groove of the shaft column, and one end of the shaft column away from the retaining ring groove is inserted and fixed in the hole on the connecting cover.

[0021] In one embodiment, the shaft column is fixed to the inner ring of the oil-containing bearing, and a slot is formed at the top of the shaft column.

[0022] In one of the embodiments, a central circular hole is opened at the center of the second frame plate, a limit bearing is fixed in the central circular hole of the second frame plate, and the aperture of the inner ring of the limit bearing matches the aperture of the slot at the top of the shaft column.

[0023] In one of the embodiments, an insert column is inserted into the slot at the top of the shaft column, the insert column is fixed to the inner ring of the limit bearing, and a top cap is provided on the top of the insert column.

[0024] In one embodiment, the shaft column, retaining ring groove, top slot, plug column, top cap and positioning retaining ring are integrally formed into a shaft core.

[0025] The technical effects and advantages of the charger cooling fan with anti-slip structure:

[0026] When using the heat dissipation fan for the charger with the anti-detachment structure, after using it for a long time, due to the aging of the plastic itself, the first frame plate of the first fan frame and the second frame plate of the second fan frame will bend. When the first frame plate and the second frame plate are bent, the fixing effect on the connecting cover will be reduced. At this time, the connecting cover will shake and cannot rotate at a uniform speed when continuing to work, which will affect the heat dissipation effect of the heat dissipation fan. At this time, according to the bending of the second frame plate, the pin on the second frame plate on this side is taken out so that the adjustment block at this position can be rotated on the second connecting block. The adjustment block will drive the second frame plate to fit the position of the shaft column more closely, and improve the limiting effect of the top cap and the plug column on the shaft column. This structure can cope with the bending of the first frame plate and the second frame plate due to aging to a certain extent, and improve the fixing effect of the heat dissipation fan during the period of aging but not damage, so as to reduce the influence of the aging of the first frame plate and the second frame plate on the rotation of several fan blades to a certain extent, and thus reduce the influence of aging on the service life of the charger;

[0027] When assembling the cooling fan, insert the shaft column into the hole in the center of the first frame plate, so that the retaining ring groove on the shaft column is in the notch at the bottom of the first frame plate, and insert the positioning retaining ring into the retaining ring groove of the shaft column to fix the shaft column on the first frame plate. At the same time, fix several fan blades on the top of the first frame plate, install the second fan frame on the top of the connecting cover, and the second fan frame and the first fan frame clamp and fix the connecting cover. At this time, insert the plug column into the inner ring of the limit bearing on the second fan frame, and fix the plug column and the shaft column together. Under the action of the top cap, the shaft core is fixed on the second fan frame, thereby fixing the position of the connecting cover and several fan blades. This structure can reduce the possibility of the connecting cover and several fan blades falling off during work to a certain extent, and improve the fixing effect of the connecting cover and the fan blades to a certain extent.

[0028] When installed, the overall structure composed of the shaft column and the connecting cover of the cooling fan can reduce the gap between the fan blades and the first frame plate after the fan blades are installed to a certain extent, reduce the air entering the cavity formed by the first frame plate and the fan blades, and improve the dustproof effect of the device to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 For the present invention Figure 1 The structural schematic diagram of the embodiment after being cut along AA;

[0031] Figure 3 For the present invention Figure 1 A disassembled diagram of the parts on one side of the embodiment;

[0032] Figure 4 For the present invention Figure 1 A disassembled diagram of the parts on the other side of the embodiment;

[0033] Figure 5 It is a schematic structural diagram of a first fan frame, an oil-containing bearing and a stator according to an embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of a first fan frame, a second fan frame, an adjustment block and a latch according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the connection cover, fan blades and shaft column according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the connection cover, fan blades and permanent magnets according to an embodiment of the present invention;

[0037] Fig. 9 This is a parts disassembled diagram of the axis of an embodiment of the present invention.

[0038] In the figure:

[0039] 1. Connecting cover;

[0040] 101. fan blade; 102. permanent magnet;

[0041] 2. The first fan frame;

[0042] 201, first frame plate; 202, first connecting block; 203, first mounting frame; 204, clamp ring; 205, edge guard; 206, notch; 207, sticker;

[0043] 3. Axis core;

[0044] 301, shaft column; 302, retaining ring groove; 303, slot; 311, plug column; 312, top cap; 321, positioning retaining ring;

[0045] 4. Oil-containing bearings;

[0046] 5. Stator;

[0047] 6. The second fan frame;

[0048] 601, second frame plate; 602, second connecting block; 603, second mounting frame; 604, center circular hole; 605, limit bearing; 606, limit plug hole; 611, adjustment block; 612, latch; 613, limit hole. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] Please refer to Figure 1-Figure 9 A cooling fan for a charger with an anti-detachment structure is shown, comprising a first fan frame 2, an oil-containing bearing 4, a stator 5 and a plurality of fan blades 101, wherein the plurality of fan blades 101 are distributed in a circular array, a connecting cover 1 is provided at the center of the ring of the plurality of fan blades 101, the connecting cover 1 is a hollow structure with an opening at the bottom, the plurality of fan blades 101 are fixed on the outer side wall of the cavity of the connecting cover 1, a permanent magnet 102 is provided in the cavity of the connecting cover 1, the permanent magnet 102 is fixedly clamped on the inner side wall of the cavity of the connecting cover 1, the first fan frame 2 comprises: a first frame plate 201 for providing support for the entire cooling fan, a first connecting block 202 for inserting fixing nails and fixing the position of the fan blades 101, a first mounting frame 203 installed at the center of the first frame plate 201, a clamping ring 204 for cooperating with the connecting cover 1 to achieve a certain sealing effect, an edge guard 205 for protecting the plurality of fan blades 101, the oil-containing bearing 4 is installed at the top center of the first mounting frame 203, and the stator 5 is sleeved on the outer wall of the oil-containing bearing 4.

[0051] In order to strengthen the fixing effect of the shaft core 3 and the plurality of fan blades 101 after the first frame plate 201 and the second frame plate 601 are aged, as shown in FIG. Figure 1-Figure 9As shown, a second fan frame 6 acting on the plurality of fan blades 101 is provided on the top of the plurality of fan blades 101, and the upper structure of the second fan frame 6 matches the upper structure of the first fan frame 2, including: a second frame plate 601 for matching the first frame plate 201, four second connecting blocks 602 for matching the four first connecting blocks 202, the cooling fan can be fixed by the four first connecting blocks 202 and the four second connecting blocks 602, a second mounting bracket 603 mounted at the center of the second frame plate 601 matching the position of the first mounting bracket 203, threaded holes are provided at one end of the four second connecting blocks 602 away from the second frame plate 601, and an adjusting block 611 is threadedly connected to the threaded hole of each second connecting block 602, and the adjusting block 611 can be The distance between the first connection block 202 and the second connection block 602 can be changed by rotating in the threaded hole of the second connection block 602. A limiting socket 606 penetrating the second frame plate 601 and the second connection block 602 is provided at each second connection block 602 on the second frame plate 601. A plurality of limiting holes 613 are provided on each adjustment block 611. A latch 612 is inserted into one of the limiting holes 613 on each adjustment block 611 and the limiting socket 606 at the same position on the second frame plate 601. The latch 612 is used to limit whether the adjustment block 611 rotates. In this way, the distance between the first connection block 202 and the second connection block 602 can be adjusted according to actual needs to determine whether the adjustment block 611 is fixed.

[0052] In order to improve the fixing effect of the plurality of fan blades 101 and reduce the probability of the plurality of fan blades 101 falling off to a certain extent, Figure 2-Figure 4 , Figure 7-Figure 9As shown, a shaft column 301 is rotatably inserted on the first frame plate 201, a retaining ring groove 302 is provided at the bottom of the shaft column 301, a notch 206 is provided at the bottom of the first frame plate 201, the retaining ring groove 302 of the shaft column 301 is located in the notch 206 of the first frame plate 201, and a positioning retaining ring 321 is sleeved in the retaining ring groove 302 of the shaft column 301, and one end of the shaft column 301 away from the retaining ring groove 302 is inserted and fixed in the hole on the connecting cover 1, and the shaft core 3 is fixed to the first fan frame 2 by the positioning retaining ring 321, and a sticker 207 is affixed to the first fan frame 2 at the position of the positioning retaining ring 321, which can protect the grease on the oil-containing bearing 4 to a certain extent and reduce the loss of the grease, the shaft column 301 is fixed to the inner ring of the oil-containing bearing 4, and a slot 303 is provided on the top of the shaft column 301, and the second frame plate 601 A central circular hole 604 is opened at the center, and a limit bearing 605 is fixed in the central circular hole 604 of the second frame plate 601. The aperture of the inner ring of the limit bearing 605 matches the aperture of the top slot 303 of the shaft column 301. A plug post 311 is inserted in the slot 303 at the top of the shaft column 301. The plug post 311 is fixed to the inner ring of the limit bearing 605. A top cap 312 is provided on the top of the plug post 311. The shaft core 3 is fixed to the second fan frame 6 through the plug post 311. A sticker 207 is affixed to the position of the top cap 312 on the second fan frame 6 to reduce dust contact therewith. The shaft column 301, the retaining ring groove 302, the top slot 303, the plug post 311, the top cap 312 and the positioning retaining ring 321 form a shaft core 3, which is used to drive the fan blades 101 to rotate and limit the position of the fan blades 101.

[0053] The top and bottom described in the cooling fan for the charger are not fixed. The top and bottom that meet the usage scenario can be determined based on actual installation needs. The position of the wire trough is not drawn in this technical solution, and it can be opened according to actual needs during the production process.

[0054] When assembling the cooling fan for charger with anti-slip structure, the shaft column 301 is inserted into the hole at the center of the first frame plate 201, so that the retaining ring groove 302 on the shaft column 301 is located in the notch 206 at the bottom of the first frame plate 201, and the positioning retaining ring 321 is inserted into the retaining ring groove 302 of the shaft column 301 to fix the shaft column 301 on the first frame plate 201. Since the connecting cover 1 and the plurality of fan blades 101 are fixed on the shaft column 301, the process simultaneously fixes the plurality of fan blades 101 on the top of the first frame plate 201, and the second fan frame 6 is installed on the top of the connecting cover 1, so that the four second connecting blocks 602 on the second fan frame 6 are respectively aligned with one of the first frame plates 201, and the second The fan frame 6 and the first fan frame 2 clamp and fix the connecting cover 1. At this time, the plug column 311 is inserted into the inner ring of the limit bearing 605 on the second fan frame 6. The plug column 311 and the shaft column 301 are fixed together. Under the action of the top cap 312, the shaft core 3 is fixed on the second fan frame 6, thereby fixing the position of the connecting cover 1 and several fan blades 101. The structure can fix the shaft core 3 and the connecting cover 1 between the first fan frame 2 and the second fan frame 6 through the positioning retaining ring 321 and the top cap 312. When the overall structure composed of the shaft column 301 and the connecting cover 1 of the cooling fan is installed, the outer wall of the connecting cover 1 cooperates with the side of the retaining ring 204 close to the center of the first frame plate 201, which can be to a certain extent. After the fan blade 101 is installed, the gap between the fan blade 101 and the first frame plate 201 is lowered. After being used for a long time, due to the aging of the plastic itself, the first frame plate 201 of the first fan frame 2 and the second frame plate 601 of the second fan frame 6 will bend. When the first frame plate 201 and the second frame plate 601 are bent, the fixing effect on the connecting cover 1 will be reduced. At this time, when the connecting cover 1 continues to work, it will shake and cannot rotate at a uniform speed, which will affect the heat dissipation effect of the cooling fan. At this time, according to the bending of the second frame plate 601, the relative distance between the four second connecting blocks 602 and the four first connecting blocks 202 is adjusted. If one side of the second frame plate 601 is bent and warped At this time, take out the pin 612 on the second frame plate 601 on this side, so that the adjustment block 611 at this position can be rotated on the second connecting block 602. After rotating to the appropriate position, reinsert the pin 612 back into the limiting socket 606 of the second frame plate 601 and one of the limiting holes 613 after the adjustment block 611 is rotated, so as to fix the position of the adjustment block 611. When the adjustment block 611 is rotated, the adjustment block 611 will drive the second frame plate 601 to fit the position of the shaft column 301 more closely, thereby improving the limiting effect of the top cap 312 and the plug column 311 on the shaft column 301. This structure can, to a certain extent, cope with the bending of the first frame plate 201 and the second frame plate 601 caused by aging.

[0055] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the invention according to the technical scheme and inventive concept of the invention, which should be covered by the protection scope of the invention.

Claims

1. A cooling fan for a charger with an anti-slip structure, comprising a first fan frame (2), an oil-containing bearing (4), a stator (5) and a plurality of fan blades (101), characterized in that: The plurality of fan blades (101) are distributed in a ring array, a connection cover (1) is provided at the center of the ring of the plurality of fan blades (101), the connection cover (1) is a hollow structure with an opening at the bottom, the plurality of fan blades (101) are fixed on the outer wall of the cavity of the connection cover (1), a permanent magnet (102) is provided in the cavity of the connection cover (1), and the permanent magnet (102) is fixedly clamped on the inner wall of the cavity of the connection cover (1); The first fan frame (2) comprises: A first frame plate (201) providing support for the entire cooling fan; A first connecting block (202) for inserting a fixing nail and fixing the position of the fan blade (101); A first mounting frame (203) mounted at the center of the first frame plate (201); A clamping ring (204) used to cooperate with the connecting cover (1) to achieve a certain sealing effect; A protective edge (205) for protecting a plurality of fan blades (101); The oil-containing bearing (4) is mounted at the top center of the first mounting frame (203), and the stator (5) is sleeved on the outer wall of the oil-containing bearing (4); A second fan frame (6) acting on the fan blades (101) is arranged on the top of the plurality of fan blades (101), and the upper structure of the second fan frame (6) cooperates with the upper structure of the first fan frame (2), and comprises: A second frame plate (601) used to cooperate with the first frame plate (201); Four second connection blocks (602) for matching with the four first connection blocks (202); A second mounting frame (603) is mounted at the center of the second frame plate (601) to match the position of the first mounting frame (203); four second connecting blocks (602) are provided with threaded holes at one end away from the second frame plate (601); an adjusting block (611) is threadedly connected in the threaded hole of each second connecting block (602); a limiting plug hole (606) penetrating the second frame plate (601) and the second connecting block (602) is provided at each second connecting block (602) on the second frame plate (601); a plurality of limiting holes (613) are provided on each adjusting block (611); a latch (612) is inserted into one of the limiting holes (613) on each adjusting block (611) and the limiting plug hole (606) at the corresponding position on the second frame plate (601).

2. A cooling fan for a charger with an anti-slip structure according to claim 1, characterized in that: A shaft column (301) is rotatably inserted on the first frame plate (201), a retaining ring groove (302) is provided at the bottom of the shaft column (301), a notch (206) is provided at the bottom of the first frame plate (201), the retaining ring groove (302) of the shaft column (301) is located in the notch (206) of the first frame plate (201), and a positioning retaining ring (321) is sleeved in the retaining ring groove (302) of the shaft column (301), and one end of the shaft column (301) away from the retaining ring groove (302) is inserted and fixed in a hole on the connection cover (1).

3. The cooling fan for a charger with an anti-slip structure according to claim 2, characterized in that: The shaft column (301) is fixed to the inner ring of the oil-containing bearing (4), and a slot (303) is provided on the top of the shaft column (301).

4. The cooling fan for a charger with an anti-slip structure according to claim 2, characterized in that: A central circular hole (604) is provided at the center of the second frame plate (601), and a limit bearing (605) is fixed in the central circular hole (604) of the second frame plate (601), and the aperture of the inner ring of the limit bearing (605) matches the aperture of the top slot (303) of the shaft column (301).

5. The cooling fan for a charger with an anti-slip structure according to claim 4, characterized in that: An insertion column (311) is inserted into the slot (303) at the top of the shaft column (301), the insertion column (311) is fixed to the inner ring of the limit bearing (605), and a top cap (312) is provided on the top of the insertion column (311).

6. The cooling fan for a charger with an anti-slip structure according to claim 5, characterized in that: The shaft column (301), the retaining ring groove (302), the top slot (303), the insert column (311), the top cap (312) and the positioning retaining ring (321) form a shaft core (3).

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