Combined cooling fan capable of being quickly disassembled and assembled

Abstract

The utility model discloses a combined cooling fan capable of being quickly assembled and disassembled, which comprises a first fan outer frame, a second fan outer frame is arranged at the upper end of the first fan outer frame, connecting assemblies are arranged at four end corners of the upper end face of the first fan outer frame, and each connecting assembly comprises an inserting sleeve. A plurality of elastic clamping heads are arranged at the upper end of the inserting sleeve, a center supporting rod is installed on the inner side of the inserting sleeve, a supporting spring is arranged between the center supporting rod and the bottom end of the inserting sleeve, and conical positioning sleeves are arranged at three end corners of the lower end face of the second fan outer frame. The other end corner of the lower end face of the second fan outer frame is provided with a positioning protruding block. Fan assemblies are installed on the inner side of the first fan outer frame and the inner side of the second fan outer frame. According to the utility model, the two fans are axially combined, so that the two-stage pressurization of airflow can be realized, the heat dissipation effect is improved, the two fans can be conveniently positioned and clamped, and the quick disassembly and assembly are further facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation fans, in particular to a combined heat dissipation fan that can be quickly disassembled and assembled. Background Art

[0002] A cooling fan is a type of fan used to dissipate heat. Its rotating blades generate airflow, transferring heat from the heat source to the surrounding environment. This is a form of convection cooling. The operating principle of a cooling fan is based on the Bernoulli principle, which states that as the velocity of a fluid increases, its pressure decreases. As the fan blades rotate, air is drawn in and accelerated. The force of the blades then pushes the air toward the radiator, where the accelerated air carries away the heat from the radiator's surface, achieving the desired heat dissipation.

[0003] Existing cooling fans usually use a single fan method to blow air, which is not convenient for maintaining stable installation when stacked on each other, and the airflow enhancement effect is not good; therefore, it does not meet existing needs. We have proposed a combined cooling fan that can be quickly disassembled and assembled. Utility Model Content

[0004] The purpose of the present utility model is to provide a combined cooling fan that can be quickly disassembled and assembled, so as to solve the problem raised in the above background technology that existing cooling fans usually use a single fan heat-blowing method to blow air, which is not convenient to maintain stable installation when stacked on each other, and the airflow enhancement effect is poor.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a combined cooling fan that can be quickly disassembled and assembled, comprising a first fan outer frame, a second fan outer frame being mounted on the upper end of the first fan outer frame, connecting components being mounted on the four end corners of the upper end surface of the first fan outer frame, the connecting component comprising a plug sleeve, a plurality of elastic clips being provided on the upper end of the plug sleeve, a central support rod being mounted on the inner side of the plug sleeve, a supporting spring being provided between the central support rod and the bottom end of the plug sleeve, a conical positioning sleeve being provided on three end corners of the lower end surface of the second fan outer frame, and a positioning protrusion being provided on the other end corner of the lower end surface of the second fan outer frame;

[0006] A fan assembly is installed on the inner side of the first fan outer frame and the second fan outer frame. The fan assembly includes two connecting frames. A mounting cover and a motor mounting seat are installed between the two connecting frames. The mounting cover is located directly above the motor mounting seat. A fan motor is fixedly installed on the inner side of the motor mounting seat.

[0007] Preferably, the fan assembly further includes a second retaining seat rotatably connected to the mounting cover, a first retaining seat is installed below the second retaining seat, and a blade rack is installed between the first retaining seat and the second retaining seat.

[0008] Preferably, the four end corners of the upper end face of the first fan outer frame are provided with positioning holes, the three conical positioning sleeves are inserted into the inner side of the positioning holes, the second fan outer frame and the positioning protrusions and the three conical positioning sleeves are integrally injection molded, and the first fan outer frame and the second fan outer frame are installed by plugging in the positioning protrusions and the three conical positioning sleeves.

[0009] Preferably, the plug-in sleeve and multiple elastic clamps are integrally injection molded, the upper end of the central support rod is inserted between the multiple elastic clamps, the multiple elastic clamps are arranged in a circle relative to the axis of the central support rod, and the central support rod and the plug-in sleeve are slidably connected through a support spring.

[0010] Preferably, the upper end of the plug sleeve is mounted on the second fan outer frame by means of a plurality of elastic clips, and the four end corners of the first fan outer frame and the second fan outer frame are mounted on the first fan outer frame by means of connecting components.

[0011] Preferably, the first fan outer frame and the second fan outer frame are both fixedly connected to the connecting frame, the fan motor is fixedly connected to the connecting frame through a motor mounting seat, the output end of the fan motor passes through the first retaining seat and the blade frame and is fixedly connected to the second retaining seat, the second retaining seat is fixedly connected to the first retaining seat through the blade frame, the two blade frames have the same rotation direction, and the rotation speed of the inner blade frame located in the second fan outer frame is greater than the rotation speed of the inner blade frame located in the first fan outer frame.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can position and support the blade frame through two adjacent connecting frames. When the power is turned on, the fan motor drives the blade frame to rotate through the first retaining seat and the second retaining seat. The rotation speed of the blade frame located on the inner side of the second fan outer frame is greater than the rotation speed of the blade frame located on the inner side of the first fan outer frame. Then, the two blade frames can perform two axial pressurizations on the airflow from bottom to top under the guidance of the first fan outer frame and the second fan outer frame, effectively enhancing the heat dissipation airflow.

[0014] 2. The utility model coaxially plugs the first fan outer frame and the second fan outer frame, and positioning holes are provided at the four end corners of the upper end surface of the first fan outer frame. The second fan outer frame drives the positioning protrusions and the three conical positioning sleeves to be plugged into the inner sides of the positioning holes to achieve preliminary positioning of the first fan outer frame and the second fan outer frame, and multiple elastic clips are clipped and installed with the second fan outer frame, and then the first fan outer frame is clipped and installed with the second fan outer frame through the plug-in sleeve and the multiple elastic clips. The central support rod can maintain the stable clipping of the multiple elastic clips with the second fan outer frame under the elastic support action of the support spring, thereby facilitating the improvement of the connection strength between the first fan outer frame and the second fan outer frame, and by pressing the central support rod, the multiple elastic clips are separated from the second fan outer frame, and the plug-in sleeve can be pulled out from the inner side of the positioning hole, thereby facilitating the quick disassembly and assembly of the first fan outer frame and the second fan frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 A top view of the entire utility model;

[0017] Figure 3 It is a schematic cross-sectional structure diagram of the entire utility model;

[0018] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0019] Figure 5 This is a schematic cross-sectional view of the fan assembly of the present invention.

[0020] In the figure: 1. First fan frame; 2. Second fan frame; 3. Positioning protrusion; 4. Elastic clip; 5. Fan assembly; 6. Connecting frame; 7. Mounting cover; 8. Blade frame; 9. Conical positioning sleeve; 10. Connecting sleeve; 11. Center support rod; 12. Support spring; 13. Fan motor; 14. Motor mounting seat; 15. First retaining seat; 16. Second retaining seat. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 and Figure 3, the utility model provides an embodiment: a combined cooling fan that can be quickly disassembled and assembled, comprising a first fan outer frame 1, a second fan outer frame 2 is installed on the upper end of the first fan outer frame 1, three end corners of the lower end face of the second fan outer frame 2 are provided with a conical positioning sleeve 9, and the other end corner of the lower end face of the second fan outer frame 2 is provided with a positioning protrusion 3, the four end corners of the upper end face of the first fan outer frame 1 are provided with positioning holes, and the three conical positioning sleeves 9 are all plugged into the inner sides of the positioning holes, and the second fan outer frame 2, the positioning protrusion 3 and the three conical positioning sleeves 9 are integrally injection molded, and the first fan outer frame 1 and the second fan outer frame 2 are plugged and installed by the positioning protrusion 3 and the three conical positioning sleeves 9, and the preliminary positioning of the first fan outer frame 1 and the second fan outer frame 2 is achieved by the positioning protrusion 3 and the three conical positioning sleeves 9, and then the connecting assembly is installed.

[0023] See also Figure 3 and Figure 4 , the four end corners of the upper end face of the first fan outer frame 1 are all installed with connecting components, and the connecting components include a plug sleeve 10, and a plurality of elastic clips 4 are provided at the upper end of the plug sleeve 10. A central support rod 11 is installed on the inner side of the plug sleeve 10, and a supporting spring 12 is provided between the central support rod 11 and the bottom end of the plug sleeve 10. The plug sleeve 10 and the plurality of elastic clips 4 are integrally injection molded, and the upper end of the central support rod 11 is plugged between the plurality of elastic clips 4. The plurality of elastic clips 4 are arranged circumferentially relative to the axis of the central support rod 11. The central support rod 11 and the plug sleeve 10 are slidably connected by the supporting spring 12. Under the elastic support action of the supporting spring 12, the central support rod 11 can maintain the stable clamping of the plurality of elastic clips 4 and the second fan outer frame 2, thereby facilitating the improvement of the connection strength between the first fan outer frame 1 and the second fan outer frame 2;

[0024] The upper end of the plug-in sleeve 10 is connected to the second fan outer frame 2 by a plurality of elastic clips 4, and the four end corners of the first fan outer frame 1 and the second fan outer frame 2 are connected by connecting components. By pressing the central support rod 11, the plurality of elastic clips 4 are separated from the second fan outer frame 2, and the plug-in sleeve 10 can be pulled out from the inside of the positioning hole, thereby facilitating the quick disassembly and assembly of the first fan outer frame 1 and the second fan outer frame 2.

[0025] See also Figure 1 、 Figure 2 and Figure 5, a fan assembly 5 is installed on the inner sides of the first fan outer frame 1 and the second fan outer frame 2, and the fan assembly 5 includes two connecting frames 6. The first fan outer frame 1 and the second fan outer frame 2 are fixedly connected to the connecting frame 6, and a mounting cover 7 and a motor mounting seat 14 are installed between the two connecting frames 6. The mounting cover 7 is located directly above the motor mounting seat 14, and a fan motor 13 is fixedly installed on the inner side of the motor mounting seat 14. The fan motor 13 is fixedly connected to the connecting frame 6 through the motor mounting seat 14, and the inner side of the mounting cover 7 is rotatably connected to the second retaining seat 16. A first retaining seat 15 is installed below the second retaining seat 16, and a blade frame 8 is installed between the first retaining seat 15 and the second retaining seat 16, so that the fan motor 13 drives the blade frame 8 to rotate through the first retaining seat 15 and the second retaining seat 16, and then the two blade frames 8 can form a heat dissipation airflow through the guide of the first fan outer frame 1 and the second fan outer frame 2;

[0026] The output end of the fan motor 13 passes through the first retaining seat 15 and the blade frame 8 and is fixedly connected to the second retaining seat 16. The second retaining seat 16 is fixedly connected to the first retaining seat 15 through the blade frame 8. The two blade frames 8 have the same rotation direction. The rotation speed of the inner blade frame 8 located in the second fan outer frame 2 is greater than the rotation speed of the inner blade frame 8 located in the first fan outer frame 1. The airflow can be axially pressurized twice through the two blade frames 8, effectively enhancing the heat dissipation airflow.

[0027] When in use, the two fan assemblies 5 are respectively installed on the inner sides of the first fan outer frame 1 and the second fan outer frame 2. Specifically, the upper and lower ends of the first fan outer frame 1 and the second fan outer frame 2 are fixedly connected to the connecting frame 6, and the fan motor 13 is fixedly connected to the connecting frame 6 through the motor mounting seat 14. The output end of the fan motor 13 is fixedly connected to the first retaining seat 15, the blade frame 8 and the second retaining seat 16, and then the blade frame 8 can be positioned and supported by the two adjacent connecting frames 6, and then the first fan outer frame 1 and the second fan outer frame 2 are coaxially plugged in. Positioning holes are provided at the four end corners of the upper end face of the first fan outer frame 1, and the second fan outer frame 2 drives the positioning protrusions 3 and the three conical positioning sleeves 9 to be plugged into the inner sides of the positioning holes, thereby realizing the preliminary positioning of the first fan outer frame 1 and the second fan outer frame 2;

[0028] Then the connecting assembly is installed, specifically, the upper end of the plug sleeve 10 and the multiple elastic clips 4 are integrally injection molded, and the plug sleeve 10 drives the multiple elastic clips 4 to be plugged into the inner side of the positioning hole, so that the multiple elastic clips 4 are clamped and installed with the second fan outer frame 2, and then the first fan outer frame 1 is clamped and installed with the second fan outer frame 2 through the plug sleeve 10 and the multiple elastic clips 4, and a central support rod 11 is inserted into the inner side of the multiple elastic clips 4, and the bottom end of the central support rod 11 is connected to the plug sleeve 10 by a support spring 12, so that the central support rod 11 can maintain the clamping stability of the multiple elastic clips 4 and the second fan outer frame 2 under the elastic support action of the support spring 12, thereby facilitating the improvement of the connection strength between the first fan outer frame 1 and the second fan outer frame 2;

[0029] Turn on the power and start the fan motor 13, so that the fan motor 13 drives the blade frame 8 to rotate through the first retaining seat 15 and the second retaining seat 16 under the support of the motor mounting seat 14, and the rotation speed of the inner blade frame 8 located in the second fan outer frame 2 is greater than the rotation speed of the inner blade frame 8 located in the first fan outer frame 1, so that the two blade frames 8 can axially pressurize the airflow twice from bottom to top under the guiding effect of the first fan outer frame 1 and the second fan outer frame 2, effectively enhancing the heat dissipation airflow, and by pressing the center support rod 11, the multiple elastic clips 4 are separated from the second fan outer frame 2, and the plug-in sleeve 10 can be pulled out from the inside of the positioning hole, thereby facilitating the quick disassembly and assembly of the first fan outer frame 1 and the second fan outer frame 2.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A quickly disassembled combined cooling fan, comprising a first fan frame (1), characterized in that: The upper end of the first fan outer frame (1) is provided with a second fan outer frame (2), and the four end corners of the upper end surface of the first fan outer frame (1) are provided with connection components, and the connection components include a plug sleeve (10), and the upper end of the plug sleeve (10) is provided with a plurality of elastic clamps (4), and the inner side of the plug sleeve (10) is provided with a central support rod (11), and a support spring (12) is provided between the central support rod (11) and the bottom end of the plug sleeve (10), and three end corners of the lower end surface of the second fan outer frame (2) are provided with a conical positioning sleeve (9), and the other end corner of the lower end surface of the second fan outer frame (2) is provided with a positioning protrusion (3); A fan assembly (5) is installed on the inner side of the first fan outer frame (1) and the second fan outer frame (2). The fan assembly (5) includes two connecting frames (6). A mounting cover (7) and a motor mounting seat (14) are installed between the two connecting frames (6). The mounting cover (7) is located directly above the motor mounting seat (14). A fan motor (13) is fixedly installed on the inner side of the motor mounting seat (14).

2. The quickly detachable combined cooling fan according to claim 1, characterized in that: The fan assembly (5) further comprises a second retaining seat (16) rotatably connected to the mounting cover (7), a first retaining seat (15) being mounted below the second retaining seat (16), and a blade holder (8) being mounted between the first retaining seat (15) and the second retaining seat (16).

3. The quickly detachable combined cooling fan according to claim 2, characterized in that: The four end corners of the upper end surface of the first fan outer frame (1) are all provided with positioning holes, and the three conical positioning sleeves (9) are all plugged into the inner sides of the positioning holes. The second fan outer frame (2) is integrally injection-molded with the positioning protrusion (3) and the three conical positioning sleeves (9). The first fan outer frame (1) and the second fan outer frame (2) are plugged and installed via the positioning protrusion (3) and the three conical positioning sleeves (9).

4. The quickly detachable combined cooling fan according to claim 3, characterized in that: The plug sleeve (10) and the plurality of elastic clamps (4) are integrally injection-molded, the upper end of the central support rod (11) is plugged between the plurality of elastic clamps (4), the plurality of elastic clamps (4) are arranged in a circle relative to the axis of the central support rod (11), and the central support rod (11) and the plug sleeve (10) are slidably connected via a support spring (12).

5. The quickly detachable combined cooling fan according to claim 4, characterized in that: The upper end of the plug sleeve (10) is mounted on the second fan outer frame (2) by means of a plurality of elastic clamps (4), and the four end corners of the first fan outer frame (1) and the second fan outer frame (2) are mounted on the first fan outer frame (1) and the second fan outer frame (2) by means of connection components.

6. The quickly detachable combined cooling fan according to claim 5, characterized in that: The first fan outer frame (1) and the second fan outer frame (2) are both fixedly connected to the connecting frame (6); the fan motor (13) is fixedly connected to the connecting frame (6) via a motor mounting seat (14); the output end of the fan motor (13) passes through the first retaining seat (15) and the blade frame (8) and is fixedly connected to the second retaining seat (16); the second retaining seat (16) is fixedly connected to the first retaining seat (15) via the blade frame (8); the two blade frames (8) have the same rotation direction; the rotation speed of the inner blade frame (8) located on the second fan outer frame (2) is greater than the rotation speed of the inner blade frame (8) located on the first fan outer frame (1).

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