A brushless DC cooling fan assembly based on PWM control

Abstract

The present invention discloses a PWM-controlled brushless DC brushless cooling fan assembly, comprising a mounting seat, the top of the mounting seat is connected to a fan body, the top of the mounting seat and both sides of the fan body are fixedly connected with a mounting shell, both sides of the fan body are fixedly connected with a connecting block, the opposite sides of the two connecting blocks are fixedly connected with a moving box, and the bottom of the moving box extends to the inner cavity of the mounting shell. The present invention solves the problem that the existing PWM-controlled brushless DC brushless cooling fan assembly is inconvenient to install and disassemble by arranging a mounting seat, a fan body, a mounting shell, a connecting block, a moving box, a moving plate, a moving block, a pressing block, a pressing rod, a first spring, a pulling plate, a plug rod, a second spring and a slot. The PWM-controlled brushless DC brushless cooling fan assembly has the advantage of convenient installation and disassembly, and is worthy of promotion.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a brushless direct current brushless cooling fan assembly based on PWM control. Background Art

[0002] A fan refers to an appliance that generates wind to provide cooling on hot days. An electric fan is an electrically driven device that generates airflow. The fan configured inside is powered on and then rotates to generate natural wind to provide cooling. A cooling fan is an important component of a vehicle cooling system. The performance of the fan directly affects the heat dissipation effect of the engine, which in turn affects the performance of the engine. If the fan is improperly selected, insufficient or excessive cooling of the engine may result, causing the engine working environment to deteriorate, which in turn affects the performance and service life of the engine. Existing cooling fans are usually fixed and installed using bolts, etc. The installation and removal of the fan require the use of tools to operate multiple bolts, which is very troublesome and reduces the installation and removal efficiency of the cooling fan, as well as the practicality of the cooling fan, which is not conducive to use. Summary of the invention

[0003] The purpose of the present invention is to provide a PWM-controlled brushless DC brushless cooling fan assembly, which has the advantage of convenient installation and disassembly, and solves the problem that the existing PWM-controlled brushless DC brushless cooling fan assembly is inconvenient to install and disassemble.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PWM-controlled brushless DC brushless cooling fan assembly, comprising a mounting seat, the top of the mounting seat is connected to a fan body, the top of the mounting seat and both sides of the fan body are fixedly connected with a mounting shell, both sides of the fan body are fixedly connected with connecting blocks, the opposite sides of the two connecting blocks are fixedly connected with a moving box, the bottom of the moving box extends to the inner cavity of the mounting shell, the front and rear sides of the inner cavity of the moving box are provided with moving plates, the bottoms of the opposite sides of the two moving plates are fixedly connected with moving blocks, a pressing block is provided between the two moving blocks, the top of the pressing block is fixedly connected with a pressing rod, the surface of the pressing rod is sleeved with a first spring, the top of the pressing rod penetrates to the top of the moving box and is fixedly connected with a pull plate, the bottoms of the opposite sides of the two moving plates are fixedly connected with an insertion rod, the surface of the insertion rod is sleeved with a second spring, the front and rear sides of the inner cavity of the mounting shell are provided with a slot for use with the insertion rod, and the end of the insertion rod away from the moving plate penetrates the moving box and extends to the inner cavity of the slot.

[0005] Preferably, the surface of the moving box contacts the mounting shell, the surface of the pressing block contacts the moving block, a pull ring is fixedly connected to the top of the pull plate, and the fan body adopts a brushless DC motor.

[0006] Preferably, the top and bottom of the movable plate are fixedly connected with sliders, the top and bottom of the inner cavity of the movable box are provided with slide grooves used in conjunction with the sliders, and the slider extends from one side away from the movable plate to the inner cavity of the slide groove.

[0007] Preferably, the tops of the front and rear sides of the inner cavity of the movable box are fixedly connected to the limit box, the inner cavity of the limit box is provided with a third spring, the opposite sides of the two third springs are fixedly connected to the limit plates, the opposite sides of the two limit plates are fixedly connected to the limit rods, and the end of the limit rod away from the limit plate passes through the limit box and is fixedly connected to the movable plate.

[0008] Preferably, a first through hole for use with a pressure rod is formed on the top of the moving box, and second through holes for use with an insertion rod are formed on the front and rear sides of the moving box.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The present invention solves the problem that the existing PWM-controlled brushless DC brushless cooling fan assembly is inconvenient to install and disassemble by arranging a mounting seat, a fan body, a mounting shell, a connecting block, a moving box, a moving plate, a moving block, a pressing block, a pressing rod, a first spring, a pulling plate, a plug rod, a second spring and a slot. The PWM-controlled brushless DC brushless cooling fan assembly has the advantage of convenient installation and disassembly and is worthy of promotion.

[0011] 2. The present invention can facilitate the installation of the mobile box by providing a mounting shell, can facilitate the movement of the mobile block by providing a pressure block, can facilitate the use of the insertion rod by providing a slot, can facilitate the use of the pull plate by providing a pull ring, can facilitate the user to pull the pull plate by providing a first spring, can squeeze the pressure block to limit the position of the pressure block by providing a slider and a slide groove, can facilitate the movement of the mobile plate, can limit the movement range of the mobile plate by providing a limit box and a limit rod, and can prevent the limit rod from detaching from the limit box by providing a limit plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a left side cross-sectional view of the installation shell and the moving box of the present invention;

[0014] Figure 3 A top view of the structure of the present invention;

[0015] Figure 4 For the present invention Figure 2 A partial enlarged view of middle A.

[0016] In the figure: 1. mounting base; 2. fan body; 3. mounting shell; 4. connecting block; 5. moving box; 6. moving plate; 7. moving block; 8. pressure block; 9. pressure rod; 10. first spring; 11. pull plate; 12. insertion rod; 13. second spring; 14. slot; 15. pull ring; 16. slider; 17. slide groove; 18. limit box; 19. third spring; 20. limit plate; 21. limit rod. DETAILED DESCRIPTION

[0017] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0018] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-4A PWM-controlled brushless DC brushless cooling fan assembly comprises a mounting base 1, the top of the mounting base 1 is connected to a fan body 2, the top of the mounting base 1 and both sides of the fan body 2 are fixedly connected with a mounting shell 3, both sides of the fan body 2 are fixedly connected with a connecting block 4, the opposite sides of the two connecting blocks 4 are fixedly connected with a moving box 5, the bottom of the moving box 5 extends to the inner cavity of the mounting shell 3, the front and rear sides of the inner cavity of the moving box 5 are provided with a moving plate 6, the bottoms of the opposite sides of the two moving plates 6 are fixedly connected with a moving block 7, a pressing block 8 is provided between the two moving blocks 7, the top of the pressing block 8 is fixedly connected with a pressing rod 9, the surface of the pressing rod 9 is sleeved with a first spring 10, the top of the pressing rod 9 passes through the top of the moving box 5 and is fixed A pull plate 11 is fixedly connected, and an insertion rod 12 is fixedly connected to the bottom of the opposite side of the two moving plates 6. A second spring 13 is sleeved on the surface of the insertion rod 12. A slot 14 for use with the insertion rod 12 is provided on the front and rear sides of the inner cavity of the mounting shell 3. The end of the insertion rod 12 away from the moving plate 6 passes through the moving box 5 and extends to the inner cavity of the slot 14. The surface of the moving box 5 contacts the mounting shell 3, and the surface of the pressure block 8 contacts the moving block 7. A pull ring 15 is fixedly connected to the top of the pull plate 11. The fan body 2 adopts a DC brushless motor. A slider 16 is fixedly connected to the top and bottom of the moving plate 6. A slide groove 17 for use with the slider 16 is provided on the top and bottom of the inner cavity of the moving box 5. The slider 16 extends to the inner cavity of the slide groove 17 away from the side of the moving plate 6. The top of the front and rear sides of the inner cavity of the moving box 5 are fixedly connected to the limit box 18, and the inner cavity of the limit box 18 is provided with a third spring 19. The opposite sides of the two third springs 19 are fixedly connected to the limit plates 20, and the opposite sides of the two limit plates 20 are fixedly connected to the limit rods 21. The end of the limit rod 21 away from the limit plate 20 passes through the limit box 18 and is fixedly connected to the moving plate 6. The top of the moving box 5 is provided with a first through hole for use with the pressure rod 9, and the front and rear sides of the moving box 5 are provided with a second through hole for use with the insertion rod 12. By setting the mounting shell 3, the installation of the moving box 5 can be facilitated, by setting the pressure block 8, the movement of the moving block 7 can be facilitated, by setting the slot 14, the use of the insertion rod 12 can be facilitated, and by setting the pull rod The ring 15 can facilitate the user to pull the pull plate 11. By setting the first spring 10, the pressure block 8 can be squeezed to limit the position of the pressure block 8. By setting the slider 16 and the slide groove 17, the movement of the movable plate 6 can be facilitated. By setting the limit box 18 and the limit rod 21, the movement range of the movable plate 6 can be limited. By setting the limit plate 20, the limit rod 21 can be prevented from being separated from the limit box 18. By setting the mounting seat 1, the fan body 2, the mounting shell 3, the connecting block 4, the moving box 5, the moving plate 6, the moving block 7, the pressure block 8, the pressure rod 9, the first spring 10, the pull plate 11, the plug rod 12, the second spring 13 and the slot 14, the problem of inconvenient installation and disassembly of the existing PWM-controlled brushless DC brushless cooling fan assembly is solved.The PWM-controlled brushless DC brushless cooling fan assembly has the advantages of easy installation and disassembly and is worthy of promotion.

[0021] When in use, the user pulls the pull plate 11 upwards through the cooperation of the pull ring 15, and the pull plate 11 drives the pressure block 8 to move upwards through the cooperation of the pressure rod 9. When the pressure block 8 is away from the moving block 7, the second spring 13 and the third spring 19 reset to drive the two moving plates 6 to move toward the middle, and the moving plate 6 drives the insertion rod 12 to move out of the slot 14, At this time, the pull ring 15 can be continued to be pulled upwards to remove the moving box 5 from the installation shell 3 to complete the disassembly. When it is necessary to install, first pull the pull ring 15 to move the two insertion rods 12 toward the middle, and then move the moving box 5 into the installation shell 3, release the pull ring 15, the first spring 10 squeezes the pressure block 8 to drive the pressure block 8 to move downward, and the downward movement of the pressure block 8 squeezes the moving block 7 to drive the two moving blocks 7 to move to the opposite side, and the moving block 7 drives the insertion rod 12 into the slot 14 through the cooperation of the moving plate 6, completing the installation of the entire fan body 2. The installation and disassembly of the fan only needs to operate the pull ring 15, which is convenient and quick.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushless DC cooling fan assembly based on PWM control, comprising a mounting base (1), Features: The top of the mounting seat (1) is connected to the fan body (2); the top of the mounting seat (1) and both sides of the fan body (2) are fixedly connected to a mounting shell (3); both sides of the fan body (2) are fixedly connected to connecting blocks (4); opposite sides of the two connecting blocks (4) are fixedly connected to a moving box (5); the bottom of the moving box (5) extends to the inner cavity of the mounting shell (3); the front and rear sides of the inner cavity of the moving box (5) are provided with moving plates (6); the bottoms of the opposite sides of the two moving plates (6) are fixedly connected to moving blocks (7); a pressure block (8) is provided between the two moving blocks (7); the top of the pressure block (8) is fixedly connected to a pressure rod (9); the surface of the pressure rod (9) is sleeved with a first spring (10); the top of the pressure rod (9) passes through the top of the moving box (5) and is fixedly connected to a pull plate (11); the bottoms of the opposite sides of the two moving plates (6) are fixedly connected to an insertion rod (12); the surface of the insertion rod (12) is sleeved with a second spring (13) ), a slot (14) for use with the insertion rod (12) is provided on the front and rear sides of the inner cavity of the mounting shell (3); an end of the insertion rod (12) away from the movable plate (6) passes through the movable box (5) and extends to the inner cavity of the slot (14); a slider (16) is fixedly connected to the top and bottom of the movable plate (6); a slide groove (17) for use with the slider (16) is provided on the top and bottom of the inner cavity of the movable box (5); a side of the slider (16) away from the movable plate (6) extends to the inner cavity of the slot (14); The movable box (5) extends into the inner cavity of the slide groove (17), the tops of the front and rear sides of the inner cavity of the movable box (5) are fixedly connected to the limit box (18), the inner cavity of the limit box (18) is provided with a third spring (19), the opposite sides of the two third springs (19) are fixedly connected to the limit plate (20), the opposite sides of the two limit plates (20) are fixedly connected to the limit rod (21), and the end of the limit rod (21) away from the limit plate (20) passes through the limit box (18) and is fixedly connected to the movable plate (6).

2. According to claim 1, a PWM-controlled brushless DC brushless cooling fan assembly, Features: The surface of the moving box (5) contacts the mounting shell (3), the surface of the pressing block (8) contacts the moving block (7), a pull ring (15) is fixedly connected to the top of the pull plate (11), and the fan body (2) adopts a brushless DC motor.

3. According to claim 1, a PWM-controlled brushless DC brushless cooling fan assembly, Features: The top of the moving box (5) is provided with a first through hole for use with a pressure rod (9), and the front and rear sides of the moving box (5) are both provided with second through holes for use with an insertion rod (12).

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