Structure of low-noise axial flow fan

Abstract

The utility model discloses a low-noise axial flow fan structure which comprises a fan body, a bearing support arranged outside the fan body, the end of a fixing plate fixedly connected with the bearing support, a connecting frame fixedly installed on the side of the fan body, and the outer wall of a shaft rod connected with the fixing plate and the connecting frame in a sliding, penetrating and sleeving mode. The clamping seat is fixedly connected to the interior of the connecting frame, the cross-shaped piece is fixedly connected to the end of the shaft rod, the outer wall of the cross-shaped piece is slidably connected with the clamping seat in a clamped mode, and the locking assembly is connected between the shaft rod and the fixing plate in a clamped mode. The fan body, the bearing support, the fixing plate, the connecting frame, the shaft rod, the cross-shaped piece, the clamping base and the locking assembly are used in a matched mode, the locking assembly can lock the shaft rod so as to lock the angle of the fan body, after the locking assembly is unlocked, the locking sleeve is pulled again, the shaft rod can be driven to be separated from the connecting frame, and therefore the angle of the fan body can be adjusted. And therefore, the fan main body is disassembled.

Description

Technical Field

[0001] This utility model relates to the field of axial flow fans, and in particular to the structure of low-noise axial flow fans. Background Technology

[0002] For example, patent publication number CN218522820U discloses a low-noise axial flow fan with a vibration damping and noise reduction structure, relating to the field of axial flow fan technology. It addresses the problem that existing axial flow fans primarily use springs for rebound damping, but this method suffers from the issue that the internal motor vibrates during rotation, causing irregular movement of the entire movable housing, resulting in instability and noise from impacts with the ground. The proposed solution involves rotating bearings on both sides of the axial flow fan housing, with connecting brackets on each bearing and a fixed base on each bracket. The connecting bracket and fixed base are connected. A connecting rod is mounted on the inner wall of the axial flow fan housing, and a servo motor is mounted on the connecting rod. The solution also includes a viscous substance that fills the gap between the connecting bracket and the fixed base, completely filling the gap. A rubber shock absorber is installed on the fixed base.

[0003] However, since the fan casing is connected to the connecting bracket via a rotating bearing, the fan casing will experience a certain angular displacement during operation, which reduces the stability of the axial flow fan during operation and thus has certain defects. Utility Model Content

[0004] The purpose of this invention is to provide a structure for a low-noise axial flow fan to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-noise axial flow fan structure, comprising:

[0006] Fan body;

[0007] The support bracket is located outside the main body of the fan. The interior of the support bracket is filled with a viscous substance for shock absorption and noise reduction, and the bottom of the support bracket is fixedly connected with an anti-slip pad.

[0008] A fixing plate, the end of which is fixedly connected to a bearing bracket;

[0009] A connecting frame, which is fixedly installed on the side of the fan body;

[0010] A shaft, the outer wall of which is slidably inserted into and sleeved with a fixing plate and a connecting frame;

[0011] A snap-fit ​​connector, which is fixedly connected to the inside of the connecting frame;

[0012] A cross-shaped component is fixedly connected to the end of a shaft, and the outer wall of the cross-shaped component is slidably engaged with a locking seat.

[0013] A locking assembly that engages between the shaft and the fixing plate.

[0014] Preferably, the locking component includes:

[0015] A locking sleeve, which is slidably engaged with one side of a fixed plate;

[0016] A locking plate, which is fixedly connected to the inside of the locking sleeve;

[0017] A slot is formed at the end of the shaft, and the outer wall of the locking plate is slidably engaged with the inner cavity of the slot.

[0018] Preferably, the locking component further includes:

[0019] A positioning rod, one end of which is fixedly connected to a locking sleeve;

[0020] The positioning groove is formed on one side of the fixed plate, and the outer wall of the positioning rod is slidably sleeved with the inner cavity of the positioning groove.

[0021] Preferably, the locking component further includes:

[0022] The locking sleeve has an annular groove inside that matches the limiting ring.

[0023] A fixing rod, one end of which is fixedly connected to a fixing plate, and the outer wall of the fixing rod is slidably inserted into and sleeved with a limiting ring.

[0024] Preferably, the locking component further includes:

[0025] A fixing ring is fixedly connected to the end of a fixing rod and is sleeved inside a locking sleeve.

[0026] A first spring is slidably sleeved on the outside of a fixed rod, and the first spring is located between a fixed ring and a limiting ring.

[0027] Preferably, the locking component further includes:

[0028] A connecting rod, one end of which is fixedly connected to the inner wall of the slot, and the outer wall of which is slidably inserted into and sleeved with a locking plate;

[0029] A limiting block is fixedly connected to the end of the connecting rod, and a sliding hole matching the limiting block is provided on the top of the locking plate;

[0030] The second spring is slidably sleeved on the outside of the connecting rod, and the end of the second spring is pressed against the locking plate and the shaft.

[0031] The technical effects and advantages of this utility model are as follows:

[0032] This utility model utilizes the combined use of a fan body, a support bracket, a fixing plate, a connecting frame, a shaft, a cross component, a snap-fit ​​seat, and a locking assembly. The locking assembly can lock the angle of the fan body by locking the shaft. After the locking assembly is unlocked, pulling the locking sleeve again can also cause the shaft to separate from the connecting frame, thereby disassembling the fan body. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0034] Figure 2 This is a schematic diagram of the overall structure of the locking sleeve of this utility model.

[0035] Figure 3 This is a schematic diagram of the overall structure of the shaft of this utility model.

[0036] In the diagram: 1. Fan body; 2. Support bracket; 3. Fixing plate; 4. Connecting frame; 5. Shaft; 6. Cross component; 7. Snap-fit ​​seat; 8. Locking assembly; 81. Locking sleeve; 82. Locking plate; 83. Slot; 84. Positioning rod; 85. Limiting ring; 86. Fixing rod; 87. Fixing ring; 88. First spring; 89. Connecting rod; 810. Limiting block; 811. Second spring. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] This utility model provides, for example Figure 1-3 The structure of the low-noise axial flow fan is shown.

[0039] Example 1

[0040] The fan assembly includes a main body 1, a support bracket 2, a fixing plate 3, a connecting frame 4, a shaft 5, a snap-fit ​​seat 7, a cross-shaped component 6, and a locking assembly 8. The support bracket 2 is located on the outside of the main body 1. The interior of the support bracket 2 is filled with a viscous substance for shock absorption and noise reduction. The support bracket 2 is formed by bending and welding a tube, allowing it to be filled with the viscous substance. Anti-slip pads are fixedly connected to the bottom of the support bracket 2, which improves the stability of the support bracket 2 in supporting the main body 1. The end of the fixing plate 3 is fixedly connected to the support bracket 2, and the connecting frame 4 is fixedly installed on the main body of the fan. On the side of 1, the outer wall of the shaft 5 is slidably inserted and sleeved with the fixed plate 3 and the connecting frame 4. The snap-fit ​​seat 7 is fixedly connected to the inside of the connecting frame 4. The cross piece 6 is fixedly connected to the end of the shaft 5. The outer wall of the cross piece 6 is slidably snapped with the snap-fit ​​seat 7. Under the action of the cross piece 6 and the snap-fit ​​seat 7, the shaft 5 can maintain a synchronous rotation state with the connecting frame 4. The shaft 5 rotates relative to the fixed plate 3, which can sleeve the working angle of the fan body 1. The locking component 8 is snapped between the shaft 5 and the fixed plate 3. The locking component 8 snaps and locks the shaft 5, which can lock the working angle of the fan body 1.

[0041] Furthermore, the locking assembly 8 includes a locking sleeve 81, a locking plate 82, a slot 83, a positioning rod 84, and a positioning groove. The locking sleeve 81 is slidably engaged with one side of the fixed plate 3. The locking plate 82 is fixedly connected to the inside of the locking sleeve 81. The slot 83 is opened at the end of the shaft 5. The outer wall of the locking plate 82 is slidably engaged with the inner cavity of the slot 83. Under the action of the locking plate 82, the locking sleeve 81 can slide relative to the shaft 5 but cannot rotate relative to the shaft 5. One end of the positioning rod 84 is fixedly connected to the locking sleeve 81. The positioning groove is opened on one side of the fixed plate 3. The outer wall of the positioning rod 84 is slidably engaged with the inner cavity of the positioning groove. Under the action of the positioning rod 84, the locking sleeve 81 can maintain a stable engagement with the fixed plate 3.

[0042] Furthermore, the locking assembly 8 also includes a limiting ring 85, a fixing rod 86, a fixing ring 87, and a first spring 88. The locking sleeve 81 has an annular groove inside that matches the limiting ring 85, so that the locking sleeve 81 can rotate relative to the limiting ring 85, and the limiting ring 85 also moves along the center line of the shaft 5 with the locking sleeve 81. One end of the fixing rod 86 is fixedly connected to the fixing plate 3, and the outer wall of the fixing rod 86 is slidably inserted into the limiting ring 85. The fixing ring 87 is fixedly connected to the end of the fixing rod 86 and is sleeved inside the locking sleeve 81. The first spring 88 is slidably sleeved outside the fixing rod 86 and is located between the fixing ring 87 and the limiting ring 85. The first spring 88 can provide a spring force to the locking sleeve 81 towards the fixing plate 3 through the limiting ring 85, so that the locking sleeve 81 drives the positioning rod 84 to maintain a stable locking state with the fixing plate 3.

[0043] Example 2

[0044] Based on Embodiment 1, the locking assembly 8 further includes a connecting rod 89, a limiting block 810, and a second spring 811. One end of the connecting rod 89 is fixedly connected to the inner wall of the slot 83, and the outer wall of the connecting rod 89 is slidably sleeved with the locking plate 82. The limiting block 810 is fixedly connected to the end of the connecting rod 89. The top of the locking plate 82 has a sliding hole that matches the limiting block 810. The second spring 811 is slidably sleeved on the outside of the connecting rod 89, and the end of the second spring 811 is pressed and fitted against the locking plate 82 and the shaft 5. The second spring 811 can provide support to the shaft. The rod 5 is subjected to an elastic compressive force, which keeps the cross part 6 at the end of the shaft rod 5 in a stable snap-fit ​​state with the snap-fit ​​seat 7. The elastic force of the second spring 811 is much smaller than that of the first spring 88, which prevents the positioning rod 84 from loosening under the action of the second spring 811. The locking sleeve 81 is pulled to make the locking plate 82 fit with the limiting block 810. The locking sleeve 81 can drive the shaft rod 5 to slide through the locking plate 82, the limiting block 810 and the connecting rod 89, so that the shaft rod 5 slides and separates from the connecting frame 4, thereby disassembling the fan body 1.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. The structure of a low-noise axial flow fan, characterized in that, include: Fan body (1); The support bracket (2) is located outside the fan body (1). The support bracket (2) is filled with a viscous substance for shock absorption and noise reduction. The bottom of the support bracket (2) is fixedly connected with an anti-slip pad. A fixing plate (3) is fixedly connected at its end to a bearing bracket (2); A connecting frame (4) is fixedly installed on the side of the fan body (1); The shaft (5) has its outer wall slidably interlocked with the fixing plate (3) and the connecting frame (4); The card holder (7) is fixedly connected to the inside of the connecting frame (4); A cross-shaped component (6) is fixedly connected to the end of the shaft (5), and the outer wall of the cross-shaped component (6) is slidably engaged with the locking seat (7). Locking component (8) is engaged between shaft (5) and fixing plate (3).

2. The structure of the low-noise axial flow fan according to claim 1, characterized in that, The locking component (8) includes: Locking sleeve (81), which is slidably engaged with one side of the fixing plate (3); Locking plate (82), which is fixedly connected to the inside of locking sleeve (81); A slot (83) is formed at the end of the shaft (5), and the outer wall of the locking plate (82) is slidably engaged with the inner cavity of the slot (83).

3. The structure of the low-noise axial flow fan according to claim 2, characterized in that, The locking component (8) further includes: A positioning rod (84), one end of which is fixedly connected to a locking sleeve (81); The positioning groove is located on one side of the fixed plate (3), and the outer wall of the positioning rod (84) is slidably sleeved with the inner cavity of the positioning groove.

4. The structure of the low-noise axial flow fan according to claim 3, characterized in that, The locking component (8) further includes: The limiting ring (85) has an annular groove inside the locking sleeve (81) that matches the limiting ring (85); A fixing rod (86) is fixedly connected at one end to a fixing plate (3), and the outer wall of the fixing rod (86) is slidably inserted into a limiting ring (85).

5. The structure of the low-noise axial flow fan according to claim 4, characterized in that, The locking component (8) further includes: A fixing ring (87) is fixedly connected to the end of a fixing rod (86) and is sleeved inside a locking sleeve (81); A first spring (88) is slidably sleeved on the outside of a fixed rod (86) and is located between a fixed ring (87) and a limiting ring (85).

6. The structure of the low-noise axial flow fan according to claim 2, characterized in that, The locking component (8) further includes: A connecting rod (89) is provided, one end of which is fixedly connected to the inner wall of the slot (83), and the outer wall of the connecting rod (89) is slidably inserted into the locking plate (82). A limiting block (810) is fixedly connected to the end of the connecting rod (89), and a sliding hole matching the limiting block (810) is opened on the top of the locking plate (82). The second spring (811) is slidably sleeved on the outside of the connecting rod (89), and the end of the second spring (811) is pressed against the locking plate (82) and the shaft (5).

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