Small fan

Abstract

The utility model discloses a small draught fan which comprises a machine shell, a fan body is arranged in the machine shell, the small draught fan further comprises a protection assembly and an installation assembly, the installation assembly is arranged at the end of the protection assembly and comprises an installation column, a pressing piece is arranged on the top of the installation column, and a clamping piece is arranged at the bottom of the installation column. By means of the design of the machine shell, the protection assembly and the installation assembly, when the protection assembly needs to be dismantled and the fan and the protection assembly need to be cleaned, the limiting blocks are pressed, the installation columns are pulled out of the installation holes and the installation rings, and therefore the protection assembly can be rapidly dismantled; when the protection assembly is installed, the installation column is inserted into the installation hole and the installation ring, the installation ring extrudes the extrusion plate, the extrusion spring deforms, thrust is generated on the extrusion plate, the installation ring is pressed, meanwhile, after the limiting block pops out of the installation column, the limiting block is clamped with the machine shell, movement of the installation column is limited, and rapid installation of the protection assembly is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of DC fans, in particular to a small fan. Background Art

[0002] During the use of the computer, a large amount of heat is generated inside the host, so a small DC fan is used for heat dissipation. A protective metal mesh is usually set on the outside of the small DC fan to protect the fan.

[0003] However, during the long-term use of the fan, a large amount of dust will adhere to the outside of the fan blades and the protective net, which will increase the weight of the fan blades and clog the protective net, affecting the air output of the fan and further affecting the operation of the computer host. Therefore, it is necessary to disassemble the protective net and clean the fan blades and the protective net. The four corners of the protective net are fixed to the casing with bolts. When disassembling the protective net, specific tools are required to rotate the bolts multiple times to separate the protective net from the casing. After cleaning, the bolts need to be rotated multiple times to install the protective net and the casing, which is not convenient enough. Utility Model Content

[0004] The purpose of the present invention is to provide a small fan to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a small fan, comprising a housing, a fan for blowing air is provided inside the housing, and further comprising:

[0006] A protective assembly is provided at the top of the housing and is used to protect the fan inside the housing;

[0007] An installation component is arranged at the end of the protective component. The installation component is used for quick installation between the casing and the protective component. The installation component includes a mounting column. The top of the mounting column is provided with a pressing part for pressing the protective component, and the bottom of the mounting column is provided with a clamping part for limiting the movement of the mounting column.

[0008] Preferably, the protection assembly includes a protection net, the outer wall of the protection net is provided with a connecting bracket for supporting the protection net, and the end of the connecting bracket is fixedly connected with a mounting ring for plugging in the mounting column.

[0009] Preferably, a mounting hole for inserting a mounting column is opened at the top of the housing, a taking plate for taking the mounting column is fixedly connected to the top of the mounting column, and the pressing member is arranged at the bottom of the taking plate.

[0010] Preferably, the pressing member includes an extrusion plate, a circular hole is opened at the top of the extrusion plate, the mounting column is connected to the circular hole through insertion, a pushing portion is provided at the top of the extrusion plate, and the extrusion plate is arranged at the top of the protective component.

[0011] Preferably, the pushing portion includes an extrusion spring, which is sleeved on the outer wall of the mounting column, the top end of the extrusion spring is fixedly connected to the bottom end of the mounting column, and the bottom end of the extrusion spring is fixedly connected to the top end of the extrusion plate.

[0012] Preferably, the diameter of the circular hole is 1.02 times the diameter of the mounting column.

[0013] Preferably, a cavity for installing a clamping member is provided inside the mounting post, and an insertion hole for inserting the clamping member is provided on the inner wall of the cavity.

[0014] Preferably, the clamping member includes a limiting block, one end of the limiting block is provided with a baffle for limiting the movement of the limiting block, and one side of the baffle is provided with an elastic block for pushing the baffle.

[0015] The technical effects and advantages of this utility model are:

[0016] The utility model utilizes the design of the casing, the protective assembly and the mounting assembly. When the protective assembly needs to be dismantled and the fan and the protective assembly need to be cleaned, the mounting post is pulled out from the mounting hole and the mounting ring by pressing the limiting block, and the protective assembly can be quickly disassembled. When the protective assembly is installed, the mounting post is inserted into the mounting hole and the mounting ring. The mounting ring squeezes the extrusion plate, causing the extrusion spring to deform, thereby generating a thrust on the extrusion plate and pressing the mounting ring. At the same time, after the limiting block pops out of the mounting post, it forms a snap connection with the casing, restricting the movement of the mounting post, and realizing quick installation of the protective assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall front view structure of the utility model.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective component of the utility model.

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the installation component of the utility model.

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the installation component of the utility model.

[0022] In the figure: 1. Casing; 2. Fan; 3. Protective assembly; 31. Protective net; 32. Connecting bracket; 33. Mounting ring; 4. Mounting assembly; 41. Mounting column; 42. Pickup plate; 43. Extrusion plate; 44. Extrusion spring; 45. Limiting block; 46. Baffle; 47. Elastic block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides Figure 1-5 The small fan shown includes a housing 1, a fan 2 for blowing air is provided inside the housing 1, and further includes:

[0025] A protective component 3 is provided at the top of the housing 1 and is used to protect the fan 2 inside the housing 1;

[0026] The mounting component 4 is arranged at the end of the protective component 3. The mounting component 4 is used for quick installation between the casing 1 and the protective component 3. The mounting component 4 includes a mounting column 41. The top of the mounting column 41 is provided with a pressing part for pressing the protective component 3, and the bottom of the mounting column 41 is provided with a clamping part for limiting the movement of the mounting column 41.

[0027] Specifically, the protection assembly 3 includes a protection net 31 , an outer wall of the protection net 31 is provided with a connecting bracket 32 ​​for supporting the protection net 31 , and an end of the connecting bracket 32 ​​is fixedly connected to a mounting ring 33 for inserting the mounting column 41 .

[0028] Furthermore, the casing 1 and the fan 2 constitute a DC fan of the existing model GLDC12038. A DC motor is provided inside the casing 1, and a ball bearing is provided at the output end of the DC motor. The fan 2 is provided outside the ball bearing. The rotation of the output end of the DC motor drives the rotation of the ball bearing, which further drives the rotation of the fan 2 to achieve the effect of blowing air and dissipating heat. Four connecting brackets 32 are provided, which are respectively arranged at the four corners of the protective net 31. The connecting part between the protective net 31 and the connecting bracket 32 ​​is fixed by welding. The end of the connecting bracket 32 ​​away from the protective net 31 is welded with a mounting ring 33, and the diameter of the circular hole in the middle of the mounting ring 33 corresponds to the diameter of the mounting hole.

[0029] Specifically, the top of the housing 1 is provided with a mounting hole for inserting the mounting column 41, the top of the mounting column 41 is fixedly connected with a pick-up plate 42 for picking up the mounting column 41, and a pressing member is provided at the bottom of the pick-up plate 42. The pressing member includes an extrusion plate 43, and a circular hole is provided at the top of the extrusion plate 43. The mounting column 41 is connected to the circular hole through the insertion, and a pushing portion is provided at the top of the extrusion plate 43. The extrusion plate 43 is provided at the top of the protective component 3, and the pushing portion includes an extrusion spring 44. The extrusion spring 44 is sleeved on the outer wall of the mounting column 41. The top of the extrusion spring 44 is fixedly connected to the bottom end of the mounting column 41, and the bottom end of the extrusion spring 44 is fixedly connected to the top of the extrusion plate 43. The diameter of the circular hole is 1.02 times the diameter of the mounting column 41. A cavity for installing a clip is provided inside the mounting column 41, and an insertion hole for inserting the clip is provided on the inner wall of the cavity. The clip includes a limiting block 45, and a baffle 46 for limiting the movement of the limiting block 45 is provided at one end of the limiting block 45, and an elastic block 47 for pushing the baffle 46 is provided on one side of the baffle 46.

[0030] Furthermore, four mounting holes are provided, which are respectively provided at the four corners of the top of the casing 1. The number of mounting components 4 provided corresponds to the number of mounting holes. The diameter of the mounting post 41 is adapted to the diameter of the mounting hole. The top of the mounting post 41 is welded and fixed to the bottom end of the picking plate 42. The diameter of the picking plate 42 is 1.5 times the diameter of the mounting post 41. The top of the extrusion spring 44 is bonded to the bottom end of the picking plate 42, and the bottom end of the extrusion spring 44 is bonded to the top of the extrusion plate 43. The pressing force of the extrusion plate 43 on the mounting ring 33 is provided by the extrusion spring 44 through deformation. The elastic force of the extrusion spring 44 can be adopted according to actual needs. When the pressing force on the mounting ring 33 needs to be increased, the extrusion spring 44 with a large elastic coefficient is used. When the pressing force on the mounting ring 33 needs to be reduced, the extrusion spring 44 with a small elastic coefficient is used. The diameter of the extrusion plate 43 corresponds to the outer diameter of the mounting ring 33. Through holes are symmetrically provided on both sides of the inner wall of the cavity. The size of the limiting block 45 is 0.98 times the size of the through hole, and the size of the baffle 46 is 1.2 times the size of the through hole. The elastic block 47 is an existing elastic rubber block. The elastic block 47 and the baffle 46 are both arranged in the cavity. The elastic block 47 is always under pressure in the cavity. In the retracted state, baffles 46 are respectively provided at both ends of the elastic block 47, and the contact portion between the elastic block 47 and the baffle 46 is bonded. A limiting block 45 is provided on the side of the baffle 46 away from the elastic block 47, and the contact portion between the baffle 46 and the limiting block 45 is welded. When installing the protective component 3, the limiting blocks 45 arranged symmetrically are first pressed toward each other, and then the mounting column 41 is inserted into the mounting ring 33 and the mounting hole by moving the pick-up plate 42. Then, when the limiting block 45 moves out of the mounting hole, the baffle 46 is pushed under the restoring force of the elastic block 47, so that the limiting block 45 extends out of the mounting column 41, thereby making the limiting block The top of 45 is pressed and fitted against the outer wall of the housing 1. At this time, the mounting ring 33 squeezes the squeezing plate 43 to move closer to the picking plate 42, so that the squeezing spring 44 between the picking plate 42 and the squeezing plate 43 is continuously squeezed. The restoring force generated by the squeezing spring 44 pushes the squeezing plate 43 to squeeze the mounting ring 33. The mounting post 41 cannot be moved out of the mounting hole due to the restriction of the limiting block 45, so that the squeezing spring 44 pressurizes and fixes the mounting ring 33. When the mounting post 41 needs to be removed, it is only necessary to press the limiting block 45 and pull the mounting post 41 away from the housing 1, which is quick and convenient.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A small fan, comprising a housing (1), wherein a fan (2) for blowing air is provided inside the housing (1), characterized in that: Also includes: A protective component (3), the protective component (3) being arranged at the top end of the housing (1), and the protective component (3) being used to protect the fan (2) inside the housing (1); A mounting assembly (4) is provided at the end of the protective assembly (3), and the mounting assembly (4) is used for quick installation between the housing (1) and the protective assembly (3). The mounting assembly (4) includes a mounting column (41), a pressing piece for pressing the protective assembly (3) is provided at the top of the mounting column (41), and a clamping piece for limiting the movement of the mounting column (41) is provided at the bottom of the mounting column (41).

2. A small fan according to claim 1, characterized in that: The protection assembly (3) comprises a protection net (31), the outer wall of the protection net (31) is provided with a connecting bracket (32) for supporting the protection net (31), and the end of the connecting bracket (32) is fixedly connected with a mounting ring (33) for plugging the mounting column (41).

3. A small fan according to claim 1, characterized in that: The top of the housing (1) is provided with a mounting hole for inserting the mounting column (41), the top of the mounting column (41) is fixedly connected with a taking plate (42) for taking the mounting column (41), and the pressing member is arranged at the bottom of the taking plate (42).

4. A small fan according to claim 3, characterized in that: The pressing member includes an extrusion plate (43), a circular hole is provided at the top end of the extrusion plate (43), the mounting column (41) is connected to the circular hole through insertion, a pushing portion is provided at the top end of the extrusion plate (43), and the extrusion plate (43) is arranged at the top end of the protective component (3).

5. A small fan according to claim 4, characterized in that: The pushing portion includes a squeezing spring (44), which is sleeved on the outer wall of the mounting column (41), the top end of the squeezing spring (44) is fixedly connected to the bottom end of the mounting column (41), and the bottom end of the squeezing spring (44) is fixedly connected to the top end of the squeezing plate (43).

6. A small fan according to claim 4, characterized in that: The diameter of the circular hole is 1.02 times the diameter of the mounting column (41).

7. A small fan according to claim 1, characterized in that: A cavity for installing a clamping member is provided inside the installation column (41), and an insertion hole for inserting the clamping member is provided on the inner wall of the cavity.

8. A small fan according to claim 7, characterized in that: The clamping member comprises a limiting block (45), one end of the limiting block (45) is provided with a baffle (46) for limiting the movement of the limiting block (45), and one side of the baffle (46) is provided with an elastic block (47) for pushing the baffle (46).

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