Rotating and buckling structure of wire guard of counter-rotating cooling fan

Abstract

The utility model relates to a kind of wire guard plate rotary buckling structure of counter-rotating type radiating fan, it is to solve the technical problem that the wire of existing counter-rotating type radiating fan is inconvenient to fix, is more scattered, and the one end angle of outer diameter is short of guard plate structure design;The fan frame body one and the fan frame body two of the structure correspond to the same shape square column respectively;Its gist is that the fan frame body one and the fan frame body two are integrated while the opposite side counter-rotating series connection, and the one side end angle groove of fan frame body one and fan frame body two is respectively as guard plate groove one and guard plate groove two, and respectively provided with the opening shaft column guide hole one and shaft column guide hole two, the shaft column of the two ends of one side edge of guard plate extends respectively and is fixed in the shaft column guide hole one of fan frame body one and the shaft column guide hole two of fan frame body two and is hinged to rotate, the other side edge of guard plate is buckled in the one side guard plate groove one and guard plate groove two of the counter-rotating series connection of fan frame body one and fan frame body two, and the wire through guard plate clamping is fixed.

Description

Technical Field

[0001] This utility model relates to a cooling fan for server equipment, specifically a rotating and snap-fit ​​structure for the wire guard plate of a counter-rotating cooling fan. Background Technology

[0002] Cooling fans generally refer to fans used for cooling motherboard devices such as CPUs and graphics cards. Their main purpose is to conduct heat away and blow it into the surrounding air to achieve a cooling effect. Some cooling fans are used in electrical cabinets or industrial equipment cabinets. Currently, cooling fans used in server equipment are crucial because the multiple working modules within a server generate a large amount of heat, causing the internal temperature of the server to rise, which is detrimental to the long-term operation of the server modules at high temperatures. Cooling fans are generally used to drive airflow to lower the internal temperature of the server. However, because these server devices have densely packed working modules and high resistance, traditional cooling fans struggle to overcome this resistance, resulting in poor cooling performance. Therefore, server cooling fans are mainly counter-rotating fans, meaning that most server equipment uses counter-rotating fans to solve the above problems. These counter-rotating fans consist of two individual finished fans connected in series in opposite directions using screws or special clips. For ease of installation and removal, counter-rotating fans are generally assembled onto fan modules and installed into the server's fan slots using clips. For example, Chinese patent application number 201821589150.0, authorized on July 9, 2019, entitled "Counter-rotating series cooling fan outer frame cover," illustrates this. Because the wires of the counter-rotating fan are exposed, some wires may interfere with or rub against the inner wall of the server during the module's retraction, causing damage to the wire insulation and resulting in a short circuit or fan failure. Currently, the industry standard for protection is to apply acetate tape, which is attached to the fan surface to fix the wires within the fan's recess. While this method can reduce the probability of wire tangling and friction to some extent, the acetate tape is prone to peeling. In some very compact servers, retracting the fan may scratch the acetate tape, causing the wires to fail to hold in place. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a rotating and snap-fit ​​structure for the wire guard plate of a counter-rotating cooling fan, thereby solving the technical problems of inconvenient and messy wire fixing and the lack of a guard plate structure design at one end corner of the outer diameter in existing counter-rotating cooling fans. This objective is achieved through the following technical solution.

[0004] A rotating and snap-fit ​​structure for the wire guide plate of a counter-rotating cooling fan is disclosed. The fan frame 1 and fan frame 2 are respectively square prisms of the same shape. The key design feature is that the fan frame 1 and fan frame 2 are connected in series on opposite sides, while the lower corners of the end plates on the other side of the fan frame 1 and fan frame 2 are respectively provided with end corner grooves. One end corner groove of the fan frame 1 and fan frame 2 serves as end plate groove 1 and end plate groove 2, respectively, and each has an open shaft guide hole 1 and shaft guide hole 2. The fan frame 1 with shaft guide hole 1... The end face at the corner and the end face at the shaft guide hole 2 of the fan frame 2 are respectively provided with wire hole 1 and wire hole 2. The shafts extending from both ends of one side of the guard plate are respectively snapped into the shaft guide hole 1 and the shaft guide hole 2 of the fan frame 1 and the fan frame 2 and hinged to rotate. The other side of the guard plate is snapped into the guard plate groove 1 and guard plate groove 2 of the fan frame 1 and the fan frame 2 which are rotated and connected together. The wires passing through the wire holes 1 and 2 at both ends of the fan frame 1 and the fan frame 2 are clamped and fixed in the guard plate groove 1 and guard plate groove 2 on one side of the fan frame 1 and the fan frame 2 by the guard plate.

[0005] The first protective plate groove of the first fan frame and the second protective plate groove of the second fan frame, as well as the end corner groove, are respectively arc-shaped triangles. The first shaft guide hole and the first wire hole of the first fan frame, and the second shaft guide hole and the second wire hole of the second fan frame are respectively provided at the two end corners of the corresponding triangle ends.

[0006] Mounting holes are provided at the four corners of one end face of the shaft guide hole one and the shaft guide hole two of the fan frame one and the fan frame two, respectively. The mounting holes on one side of the shaft guide hole one and the shaft guide hole two are aligned and connected with the through holes at both ends of the guard plate.

[0007] The outer diameter of the four corner grooves on the circumferential surface of the counter-rotating series-connected side of the fan frame 1 and fan frame 2 is provided with interlocking hooks and snap grooves that are integrally formed with one side of the fan frame. The guard plate is set in one of the corner grooves on one side, and the middle notch on the shaft side of the guard plate corresponds to the interlocking position between the snap hook and the snap groove.

[0008] The guard plate is fastened to the inner side of the groove at the connection between the guard plate groove 1 of the fan frame 1 and the guard plate groove 2 of the fan frame 2. While the fan frame 1 and the fan frame 2 are connected to each other by rotating on opposite sides, the openings of the side ear groove 1 and the side ear groove 2 are connected and integrated. The ribs at the side ears of the guard plate are simultaneously inserted into and fixed to the side ear groove 1 and the side ear groove 2.

[0009] The two ends of the guard plate have open hook grooves on one side of the shaft column. The bottom of the shaft column guide hole one of the fan frame one and the shaft column guide hole two of the fan frame two corresponding to the hook grooves are provided with protruding positioning hooks. The hook grooves at both ends of the guard plate are respectively interference-fitted into the positioning hooks at the bottom of the corresponding shaft column guide holes.

[0010] The first protective plate groove of the fan frame and the second protective plate groove of the fan frame are connected as one unit and have a space to accommodate eight wires.

[0011] This utility model has a simple structure, reasonable design, and is convenient to produce, use, and operate; it is suitable for use as a rotating fastening structure for the wire guard plate of a counter-rotating cooling fan, as well as for structural improvements of similar products. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of an embodiment of the present invention, with the framed portion highlighted and enlarged.

[0013] Figure 2 yes Figure 1 Schematic diagram of the assembled three-dimensional structure Figure 1 .

[0014] Figure 3 yes Figure 2 Schematic diagram of the assembled three-dimensional structure Figure 2 .

[0015] Figure 4 yes Figure 2 The diagram shows a top view of the structure, with the framed area enlarged and sectioned (AA).

[0016] Figure 5 yes Figure 4 A schematic diagram of the AA cross-sectional structure.

[0017] Attached Figures and Their Names: 1. Fan Frame One, 101. Protective Plate Groove One, 1011. Side Ear Groove One, 102. Shaft Guide Hole One, 103. Wire Hole One, 2. Fan Frame Two, 201. Protective Plate Groove Two, 2011. Side Ear Groove Two, 202. Shaft Guide Hole Two, 203. Wire Hole Two, 3. Protective Plate, 301. Shaft, 3011. Hook Groove Side, 302. Through Hole, 4. Buckle Hook, 5. Buckle Groove. Implementation

[0018] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-5As shown, the fan frame 1 and fan frame 2 of this structure are respectively square prisms of the same shape. Fan frame 1 and fan frame 2 are connected in series on opposite sides, while the lower circumferential corners of the end plates on the other side of fan frame 1 and fan frame 2 are respectively provided with end corner grooves. One end corner groove of fan frame 1 and fan frame 2 serves as end plate groove 101 and end plate groove 201, respectively, and is respectively provided with open shaft guide holes 102 and 202. The end face of the fan frame 1 at the end corner of shaft guide hole 1 and the end face of shaft guide hole 2 are respectively provided with open shaft guide holes 102 and 202. The fan frame has a wire hole 103 and a wire hole 203 at each of its two corners. The shafts 301 extending from both ends of one side of the guard plate 3 are respectively engaged and rotated in the shaft guide holes 1 and 2 of the fan frame 1 and fan frame 2. The other side of the guard plate is engaged in the guard plate groove 1 and guard plate groove 2 of the fan frame 1 and fan frame 2, which are rotated and connected together. The wires passing through the wire holes 1 and 2 at both ends of the fan frame 1 and fan frame 2 are clamped and fixed in the guard plate groove 1 and guard plate groove 2 on one side of the fan frame 1 and fan frame 2 by the guard plate.

[0019] The specific structure is as follows: The first guard plate groove of the first fan frame and the second guard plate groove of the second fan frame, as well as the corner groove, are respectively arc-shaped triangles. The first shaft guide hole and the first wire hole of the first fan frame, and the second shaft guide hole and the second wire hole of the second fan frame are respectively set at the two corners of the corresponding triangle ends. The four corners of one side of the shaft guide hole and the shaft guide hole of the second fan frame are respectively provided with mounting holes. The mounting holes on one side of the shaft guide hole and the shaft guide hole are respectively aligned and connected with the through holes 302 at both ends of the guard plate. The outer diameter of the four corner grooves on the circumference of the counter-rotating series side of the first fan frame and the second fan frame are respectively provided with interlocking hooks 4 and snap-fit ​​grooves 5 that are integrally formed with one side of the fan frame. The guard plate is set in one of the corner grooves. The middle notch on the shaft side of the guard plate corresponds to the interlocking position between the snap hook and the snap-fit ​​groove.

[0020] Simultaneously, the aforementioned protective plate is fastened to the inner side of the groove at the connection point between the protective plate groove 1 of fan frame 1 and the protective plate groove 2 of fan frame 2, specifically to the side ear groove 1011 and side ear groove 2011. While fan frame 1 and fan frame 2 are connected in series on opposite sides, the openings of side ear groove 1 and side ear groove 2 are connected and integrated. The ribs at the side ears of the protective plate are simultaneously interference-fitted and fixed to side ear groove 1 and side ear groove 2. The circumferential surface of the shaft posts at both ends of the protective plate is respectively provided with open hook groove edges 3011. The bottom of the shaft post guide hole 1 of fan frame 1 and the shaft post guide hole 2 of fan frame 2 corresponding to the hook groove edges are provided with protruding positioning hooks. The hook groove edges at both ends of the shaft post of the protective plate are respectively interference-fitted to the corresponding positioning hooks at the bottom of the shaft post guide holes. The protective plate groove 1 of fan frame 1 and the protective plate groove 2 of fan frame 2 are integrated to provide space for accommodating eight wires.

[0021] The rotating snap-fit ​​structure of the conductor guard plate adds two arc-shaped grooves on both sides of the fan frame as guide holes for the shaft posts. Two shaft posts extend from both ends of the guard plate and are inserted into the arc-shaped grooves of the fan frame. The guard plate is fixed by rotating the shaft posts, and the other side of the guard plate is snapped into the groove of the fan frame. At the same time, because the guard plate has shaft posts, the guard plate is detachable without damaging the fan frame or the guard plate structure.

[0022] This rotating snap-fit ​​wire guard effectively protects against wire wear. Simply pre-mold a circular groove in the fan frame mold, place the wires normally into the outer diameter of the fan frame on one side of the guard, and insert the shafts on both sides of the guard into the circular groove of the fan frame. By rotating, the other side of the guard can be snapped into the groove of the fan frame, covering the wires. Thus, all eight wires are sealed by the guard and completely confined within the guard groove (wire groove), eliminating the risk of wires exceeding the frame surface and effectively preventing wire wear. The assembled guard does not affect the original assembly function of the fan. Existing similar products find it difficult to accommodate eight wires in the corner groove on one side of the fan frame, and there is a probability that they will exceed the fan frame surface during assembly, leading to wire wear.

Claims

1. A rotating fastening structure for the wire guide plate of a counter-rotating cooling fan, wherein the fan frame one (1) and fan frame two (2) of the structure are respectively square prisms of the same shape; characterized in that While the fan frame 1 (1) and fan frame 2 (2) are connected in series on opposite sides, the lower circumferential corners of the end corners of the guard plate grooves on the other side of the fan frame 1 and fan frame 2 are respectively provided with end corner grooves. One end corner groove of the fan frame 1 and fan frame 2 serves as guard plate groove 1 (101) and guard plate groove 2 (201) respectively, and is respectively provided with open shaft guide hole 1 (102) and shaft guide hole 2 (202). The end face of the fan frame 1 at the end corner of shaft guide hole 1 and the end face of the fan frame 2 at the end corner of shaft guide hole 2 are respectively provided with The first (103) and the second (203) wire holes are respectively inserted into the first and second guide holes of the fan frame and the second guide hole of the fan frame. The other side of the guard plate is engaged in the first and second guard plate grooves of the fan frame and the fan frame. The wires passing through the first and second wire holes of the fan frame and the fan frame are clamped and fixed in the first and second guard plate grooves of the fan frame and the fan frame.

2. The rotating snap-fit ​​structure of the wire guard plate of the counter-rotating cooling fan according to claim 1, characterized in that... The first guard plate groove (101) of the fan frame one (1) and the second guard plate groove (201) of the fan frame two (2), as well as the end corner groove, are respectively arc-shaped triangles. The first shaft guide hole (102) and the first wire hole (103) of the fan frame one, and the second shaft guide hole (202) and the second wire hole (203) of the fan frame two are respectively set at the two end corners of the corresponding triangle ends.

3. The rotating snap-fit ​​structure of the wire guard plate of the counter-rotating cooling fan according to claim 1, characterized in that... The fan frame 1 (1) and fan frame 2 (2) have mounting holes at the four corners of the shaft guide hole 1 (102) and shaft guide hole 2 (202) on one side. The mounting holes on one side of shaft guide hole 1 (102) and shaft guide hole 2 (202) are aligned and connected with the through holes (302) at both ends of the guard plate (3).

4. The rotating snap-fit ​​structure of the wire guard plate of the counter-rotating cooling fan according to claim 1, characterized in that... The outer diameter of the four corner grooves on the circumferential surface of the opposite-rotation series end corner of the fan frame one (1) and the fan frame two (2) is provided with a buckle hook (4) and a buckle groove (5) that are interlocked and integrally formed with the fan frame on one side. The guard plate (3) is set in one of the corner grooves on one side. The middle notch on one side of the shaft column (301) of the guard plate corresponds to the interlocking position between the buckle hook and the buckle groove.

5. The rotating snap-fit ​​structure of the wire guard plate of the counter-rotating cooling fan according to claim 1, characterized in that... The guard plate (3) is fastened to the inner side of the groove at the connection between the guard plate groove 1 (101) of the fan frame 1 (1) and the guard plate groove 2 (201) of the fan frame 2 (2). The fan frame 1 and the fan frame 2 are connected to each other by rotating on opposite sides. At the same time, the openings of the side grooves 1 and 2 are connected and integrated. The ribs at the side ears of the guard plate are simultaneously inserted and fixed to the side grooves 1 and 2.

6. The rotating snap-fit ​​structure of the wire guard plate of the counter-rotating cooling fan according to claim 1, characterized in that... The two ends of the guard plate (3) have open hook groove edges (3011) on one side of the shaft column (301). The bottom of the shaft column guide hole (102) of the fan frame one (1) and the shaft column guide hole (202) of the fan frame two (2) are provided with protruding positioning hooks. The two ends of the shaft column of the guard plate are respectively interference-fitted into the positioning hooks at the bottom of the corresponding shaft column guide holes.

7. The rotating snap-fit ​​structure of the wire guard plate of the counter-rotating cooling fan according to claim 1, characterized in that... The first guard plate groove (101) of the fan frame one (1) and the second guard plate groove (201) of the fan frame two (2) are connected as one body and have a space to accommodate eight wires.

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