A heat dissipation fan

Abstract

This utility model relates to the field of fixture technology, specifically a cooling fan, comprising: a fan housing; and: four fixing strips, each integrally formed at one of the four corners of the rear center of the fan housing; a mounting block, fixedly connected to one end of each of the four fixing strips close to each other; an air outlet mechanism, installed inside the fan housing and located in front of the mounting block; a fan cover, installed at the front center of the fan housing; a cover, located on the upper right side of the fan housing and corresponding to the fixing strip on the same side; and a buffer mechanism, located inside the upper right corner fixing strip. This utility model, by integrally forming a perforated cover on the upper right side of the fan housing, covers the exposed portion near the wiring points, greatly reducing exposed wires, lowering the wire damage rate, and increasing service life.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a cooling fan. Background Technology

[0002] With the rapid development of electronic technology, the operating speed of heat-generating electronic components such as central processing units is getting faster and faster, and the heat generated during their operation is also increasing accordingly. In order to dissipate this heat and ensure the normal operation of electronic components, the industry uses cooling fans to cool electronic components.

[0003] The impeller of an existing cooling fan is somewhat similar to a propeller. When it is working, most of the airflow is parallel to the axis, that is, along the axial direction. The power consumption of a cooling fan is lowest when the inlet airflow is free air with zero static pressure. When it is running, the power consumption increases as the back pressure of the airflow increases. Cooling fans are usually mounted on the cabinet of electrical equipment, and sometimes they are integrated into the motor. Due to their compact structure, cooling fans can save a lot of space and are easy to install, so they are widely used.

[0004] In existing technologies, too many wiring connections of cooling fans are exposed, which can easily damage the wires and reduce their lifespan. At the same time, there is no buffer mechanism after the connecting wires are connected to the circuit board of the cooling fan, making it easy for the connecting wires to break and detach from the circuit board, causing the cooling fan to malfunction. To address this, we have provided a cooling fan. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A cooling fan includes: a fan housing;

[0007] Four fixing strips are integrally formed at the four corners of the rear middle part of the fan housing;

[0008] The mounting block is fixedly connected to one end of each of the four fixing bars that are close to each other.

[0009] An air outlet mechanism is installed inside the fan housing and located on the front side of the mounting block;

[0010] A fan cover is installed at the front center of the fan housing;

[0011] A cover is provided on the upper right side of the fan housing and corresponds to the fixing strip on the same side; and

[0012] The buffer mechanism is located inside the fixing strip in the upper right corner.

[0013] Furthermore, each of the four corners of the fan housing is provided with a mounting groove, and the center of the mounting groove is provided with a mounting hole.

[0014] Furthermore, the air outlet mechanism includes a hub and a plurality of blades fixedly connected to the middle of the outer circumference of the hub.

[0015] Furthermore, the rear side of the hub is fixedly installed with the mounting block, and the plurality of blades are distributed in a ring array about the center of the hub.

[0016] Furthermore, the mounting block has an internal mounting cavity, and a circuit board electrically connected to the wheel hub is fixedly mounted inside the mounting cavity.

[0017] Furthermore, the left end of the fixing strip is provided with an arc.

[0018] Furthermore, the cover is provided with a wire hole that communicates with the inside of the fan housing.

[0019] Furthermore, the upper right corner of the fixing strip has a groove inside that communicates with the inside of the mounting block and the wire hole. The buffer mechanism is installed in the middle of the groove. A cover is fastened to the rear side of the groove. A limiting plate is fixedly connected to the middle of the side of the cover near the groove. The limiting plate is slidably fitted inside the groove. A locking post is integrally formed in the middle of the limiting plate.

[0020] Furthermore, the buffer mechanism includes a base fixedly connected to the middle of the inner wall of the wire groove, and:

[0021] A fixed column is fixedly connected to the middle of the base at the end away from the wire groove;

[0022] The top seat is fixedly connected to the end of the fixed column away from the base;

[0023] Two arc-shaped plates are respectively disposed on both sides of the fixed column and arranged along the length direction of the groove;

[0024] Multiple springs are fixedly connected between the arc-shaped plate and the fixed column;

[0025] A slot is provided at the middle of the end of the top seat away from the fixing post, and the slot engages with the fixing post.

[0026] Furthermore, the base and the top seat are provided with annular grooves on the side close to each other and on the outside of the fixed column. Both ends of the arc plate extend into the corresponding annular grooves. Arc-shaped sliders are integrally formed on the outer sides of the extended ends of both ends of the arc plate. The end of the arc-shaped slider away from the arc plate slides into the inside of the annular groove.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows: by integrally forming a perforated cover on the upper right side of the fan housing, the cover seals the exposed part near the wiring point, greatly reducing the exposed wires, reducing the wire damage rate, and improving the service life; at the same time, a wire hole and a wire groove are provided that are connected to the through hole of the cover, and a buffer mechanism is set in the wire groove. When the cover is opened, the extension end of the connecting wire can be wrapped around the outside of the two arc plates and then passed through the wire groove, wire hole, and extension of the cover. After the outer end of the connecting wire is pulled, it can be tightened at the winding point and squeezed by the arc plates and springs for buffering, preventing the connecting wire from breaking, protecting the connecting wire, and improving its service life.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0031] Figure 2 This is a three-dimensional structural diagram of the present invention from the right side view.

[0032] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0033] Figure 4 This is a schematic diagram of the exploded structure of this utility model;

[0034] Figure 5 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0035] Figure 6 This is a cross-sectional view of one of the fixed column parts of this utility model and a structural schematic diagram of the connection with the buffer mechanism;

[0036] Figure 7 This is an exploded structural diagram of one of the fixed column parts and the buffer mechanism of this utility model.

[0037] The markings in the diagram are as follows: 1. Fan housing; 2. Fixing strip; 3. Mounting block; 4. Hub; 5. Blade; 6. Fan cover; 7. Mounting slot; 8. Cover; 9. Cable hole; 10. Cable groove; 11. Buffer mechanism; 12. Buckle cover; 13. Base; 14. Top seat; 15. Annular groove; 16. Fixing post; 17. Arc plate; 18. Arc slider; 19. Spring; 20. Limiting plate; 21. Locking post. Detailed Implementation

[0038] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Please see Figures 1-7 A cooling fan includes: a fan housing 1; four fixing strips 2, each integrally formed at one of the four corners of the rear center of the fan housing 1; a mounting block 3, fixedly connected to one end of each of the four fixing strips 2; an air outlet mechanism, installed inside the fan housing 1 and located in front of the mounting block 3; a fan cover 6, installed in the center of the front end of the fan housing 1; a cover 8, located on the upper right side of the fan housing 1 and corresponding to the fixing strip 2 on the same side; and a buffer mechanism 11, located inside the upper right corner fixing strip 2; wherein the air outlet mechanism is installed inside the fan housing 1, and the connecting wire is connected to the circuit board inside the mounting block 3 through the cover 8. The cover 8 is integrally formed with the fan housing 1, and the cover 8 seals the exposed part near the wiring point, leaving only one opening, which greatly reduces the exposure of the wires.

[0040] Furthermore, each of the four corners of the fan housing 1 is provided with a mounting groove 7, and the center of the mounting groove 7 is provided with a mounting hole; wherein the mounting groove 7 and the mounting hole facilitate the connection between the fan housing 1 and the components that need to be cooled.

[0041] Furthermore, the air outlet mechanism includes a hub 4 and multiple blades 5, which are fixedly connected to the middle of the outer circle of the hub 4; the hub 4 and the blades 5 are existing technologies and will not be described in detail here.

[0042] Furthermore, the rear side of the hub 4 is fixedly installed with the mounting block 3, and multiple blades 5 are distributed in a ring array about the center of the hub 4; the number of blades 5 installed is set as needed, and the blades 5 are installed at a certain angle.

[0043] Furthermore, the mounting block 3 has a mounting cavity inside, and a circuit board electrically connected to the wheel hub 4 is fixedly installed inside the mounting cavity; wherein the circuit board inside the mounting block 3 is electrically connected to the wheel hub 4 through a connecting wire.

[0044] Furthermore, the left end of the fixing strip 2 is provided with an arc; wherein the arc of the fixing strip 2 faces the air intake direction to reduce the wind resistance of airflow.

[0045] Furthermore, the cover 8 is provided with a wire hole 9 that communicates with the inside of the fan housing 1; wherein the outer end of the cover 8 has a constricted opening with a rubber sleeve to prevent the connecting wire from rubbing against the cover 8 and causing damage, thereby improving the service life of the connecting wire.

[0046] Furthermore, the upper right corner fixing strip 2 has a wire groove 10 that communicates with the interior of the mounting block 3 and the wire hole 9. The buffer mechanism 11 is installed in the middle of the wire groove 10. A cover 12 is fastened to the rear side of the wire groove 10. A limiting plate 20 is fixedly connected to the middle of the side of the cover 12 near the wire groove 10. The limiting plate 20 is slidably fitted inside the wire groove 10. A locking post 21 is integrally formed in the middle of the limiting plate 20. The wire hole 9 and the wire groove 10 allow one end of the connecting wire to be connected to the circuit board, and the other end to pass through and extend outward, which is convenient for wiring. The cover 12 can be detached from the wire groove 10, which makes it easy to wrap the connecting wire around the buffer mechanism 11 and extend outward. The limiting plate 20 allows the cover 12 to fit tightly against the wire groove 10. The locking post 21 can cooperate with the buffer mechanism 11 to make the cover 12 and the limiting plate 20 engage with the fixing strip 2.

[0047] Furthermore, the buffer mechanism 11 includes a base 13 fixedly connected to the middle of the inner wall of the wire groove 10, and: a fixed post 16 fixedly connected to the middle of the end of the base 13 away from the wire groove 10; a top seat 14 fixedly connected to the end of the fixed post 16 away from the base 13; two arc-shaped plates 17 respectively disposed on both sides of the fixed post 16 and disposed along the length direction of the wire groove 10; multiple springs 19 fixedly connected between the arc-shaped plates 17 and the fixed post 16; and a slot disposed at the middle of the end of the top seat 14 away from the fixed post 16, and the slot engages with the slot 21; wherein when the other end of the connecting wire passes through the wire groove 10, it first wraps around the outside of the two arc-shaped plates 17 and then extends out through the wire hole 9 and the cover 8. When the extended end of the connecting wire is pulled by force, the part of the connecting wire wrapped around the arc-shaped plates 17 can apply pressure to the two arc-shaped plates 17, and the two arc-shaped plates 17 can move closer to the fixed post 16 and compress the springs 19, thereby buffering the connecting wire and preventing the end of the connecting wire connected to the circuit board from being torn off.

[0048] Furthermore, the base 13 and the top seat 14 are both provided with annular grooves 15 on the side close to each other and on the outside of the fixed column 16. Both ends of the arc plate 17 extend into the corresponding annular grooves 15. Arc-shaped sliders 18 are integrally formed on the outer side of the extended ends of both ends of the arc plate 17. The end of the arc-shaped slider 18 away from the arc plate 17 slides in the interior of the annular groove 15. When the arc plate 17 moves closer to the fixed column 16, it can drive the arc-shaped slider 18 to slide in the annular groove 15, ensuring the stability of the movement of the arc plate 17.

[0049] Working principle and usage process of this utility model:

[0050] In use, the cooling fan is pre-assembled: the blades 5 and hub 4 are installed into the fan housing 1, and the fan cover 6 is then snapped into the front end of the fan housing 1 for fixation; the cover 8 is now integrated with the fan housing 1. Next, the cover 12 is removed from the wire groove 10, disengaging the locking post 21 from the slot. Then, the other end of the connecting wire soldered to the circuit board inside the mounting block 3 is straightened, and the other end is extended into the wire groove 10 and wrapped around the two arc-shaped plates 17 once. It then extends through the wire hole 9 and the cover 8 to connect with the hub 4. Finally, the limiting plate 20 is aligned with the wire groove 10, and the locking post 21 is aligned with the slot and snapped in, thus securing the fan. The mounting plate 20 enters the wire groove 10, and the cover 12 makes tight contact with the outside of the wire groove 10 to cover the wire groove 10, ensuring that the connecting wire is not exposed. When the extension end of the connecting wire is pulled, the connecting wire can apply pressure to the two arc plates 17 at the point where the connecting wire is wrapped around the arc plate 17. The arc plate 17 moves closer to the fixing post 16 and drives the arc slider 18 to slide in the annular groove 15. The arc plate 17 can compress the spring 19, thereby buffering the connecting wire and preventing the end of the connecting wire connected to the circuit board from being torn off. Then, the installed cooling fan is fixed in the determined installation position through the mounting slot 7 and mounting hole. The power is connected, the power is turned on, and the fan runs.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A heat dissipating fan characterized by, include: Fan housing (1): Four fixing strips (2) are integrally formed at the four corners of the rear end of the fan housing (1); The mounting block (3) is fixedly connected to one end of the four fixing strips (2) that are close to each other; The air outlet mechanism is installed inside the fan housing (1) and located on the front side of the mounting block (3); The fan cover (6) is installed at the front center of the fan housing (1); A cover (8) is provided on the upper right side of the fan housing (1) and corresponds to the fixing strip (2) on the same side; and The buffer mechanism (11) is located inside the fixing strip (2) in the upper right corner.

2. The heat dissipating fan according to claim 1, wherein The fan housing (1) has mounting grooves (7) at the center of each of its four corners, and mounting holes are provided in the center of each mounting groove (7).

3. The heat dissipating fan of claim 2, wherein, The air outlet mechanism includes a hub (4), and: Multiple blades (5) are fixedly connected to the middle of the outer circle of the hub (4).

4. The heat dissipating fan of claim 3, wherein, The rear side of the hub (4) is fixedly installed with the mounting block (3), and the multiple blades (5) are arranged in a ring array about the center of the hub (4).

5. The heat dissipating fan of claim 4, wherein, The mounting block (3) has a mounting cavity inside, and a circuit board electrically connected to the hub (4) is fixedly installed inside the mounting cavity.

6. The heat dissipating fan of claim 5, wherein, The left end of the fixing strip (2) is provided with an arc.

7. The heat dissipating fan of claim 6, wherein, The cover (8) is provided with a wire hole (9) that communicates with the inside of the fan housing (1).

8. The heat dissipating fan of claim 7, wherein, The upper right corner fixing strip (2) has a wire groove (10) inside that communicates with the inside of the mounting block (3) and the wire hole (9). The buffer mechanism (11) is installed in the middle of the wire groove (10). A buckle cover (12) is fastened to the rear side of the wire groove (10). A limiting plate (20) is fixedly connected to the middle of the side of the buckle cover (12) near the wire groove (10). The limiting plate (20) is slidably fitted inside the wire groove (10). A locking post (21) is integrally formed in the middle of the limiting plate (20).

9. The heat dissipating fan of claim 8, wherein, The buffer mechanism (11) includes a base (13) fixedly connected to the middle of the inner wall of the wire groove (10), and: A fixed column (16) is fixedly connected to the middle of the end of the base (13) away from the wire groove (10); The top seat (14) is fixedly connected to the end of the fixed column (16) away from the base (13); Two arc-shaped plates (17) are respectively disposed on both sides of the fixed column (16) and along the length direction of the groove (10); Multiple springs (19) are fixedly connected between the arc-shaped plate (17) and the fixed column (16); A slot is provided at the middle of one end of the top seat (14) away from the fixing post (16), and the slot engages with the fixing post (21).

10. The heat dissipating fan of claim 9, wherein, The base (13) and the top seat (14) are provided with annular grooves (15) on the side close to each other and on the outside of the fixed column (16). Both ends of the arc plate (17) extend into the corresponding annular grooves (15). The outer sides of the extended ends of both ends of the arc plate (17) are integrally formed with arc-shaped sliders (18). The end of the arc-shaped slider (18) away from the arc plate (17) slides and engages with the inside of the annular groove (15).

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