cooling fan

Abstract

The present invention discloses a cooling fan, comprising: a body; a head for supplying air, the head being rotatably connected to the body, the head being used to rotate upward and downward to supply air; and a limiting structure, the head being assembled to the body via the limiting structure, the limiting structure being used to limit and fix the head at different air supply angles. The cooling fan provided by the present invention effectively solves the problem of a limited air supply range in conventional cooling fans.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a cooling fan. Background Art

[0002] Cooling fans, also known as environmentally friendly air conditioners, water-cooled air conditioners, and air coolers, are being used by more and more families for their advantages such as simple operation, low power consumption, and the need to not close doors and windows during use.

[0003] In the prior art, the air supply mode of the cooling fan is simple, and the air supply angle can only be adjusted by rotating left or right, resulting in a small air supply range of the cooling fan. Summary of the Invention

[0004] An embodiment of the present invention provides a cooling fan to solve the problem of a small air supply range of the cooling fan in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a cooling fan, which includes: a fuselage; a head, which is used to supply air and is rotatably connected to the fuselage. The head rotates to realize the cooling fan shaking up and down to supply air; a limiting structure, the head is assembled with the fuselage through the limiting structure, and the limiting structure is used to limit and fix the head at different air supply angles.

[0006] Furthermore, the limiting structure includes: an elastic member, the first end of the elastic member is connected to the machine head; a limiting head, the limiting head is connected to the second end of the elastic member, and the limiting head moves with the rotation of the random head; an angle limiting plate, the angle limiting plate is fixedly connected to the machine body, the angle limiting plate and the limiting head are arranged correspondingly, and the angle limiting plate is provided with a plurality of limiting holes corresponding to the moving trajectory of the limiting head; the limiting head has a first state of extending and engaging with the limiting hole, and the limiting head has a second state of retracting and disengaging from the limiting hole, and the limiting head can move to different limiting holes with the rotation of the random head.

[0007] Furthermore, a mounting hole is provided on the machine head, the elastic member is located in the mounting hole, the limiting head is at least partially located in the mounting hole, and the limiting head is slidable in the mounting hole.

[0008] Furthermore, the elastic member is a spring.

[0009] Furthermore, the first end of the limiting head is connected to the elastic member, the second end of the limiting head is matched with the limiting hole, and the second end of the limiting head is formed with a guiding arc surface.

[0010] Furthermore, it also includes: a fixed plate, the fixed plate is fixedly installed on the fuselage, and the angle limiting piece is fixedly installed on the fixed plate.

[0011] Furthermore, it also includes: a rotating shaft, which is fixedly connected to the machine head, the axis of the rotating shaft is colinear with the rotation axis of the machine head, the rotating shaft passes through the fixed plate and the angle limit plate at the same time, and the rotating shaft rotates relative to the fixed plate.

[0012] Furthermore, the fixed disk has a limiting groove; the first end of the rotating shaft forms a shaft cap, the shaft cap is located in the limiting groove, and the bottom wall of the limiting groove is located between the shaft cap and the machine head; the second end of the rotating shaft passes through the bottom wall of the limiting groove and is connected to the machine head.

[0013] Furthermore, a limiting boss is formed in the limiting groove of the fixed disk, and the limiting boss is arranged on the rotation path of the shaft cap. The limiting boss is used to push against and limit the shaft cap rotating with the random head.

[0014] Furthermore, the shaft cap is in a fan-shaped structure, and the limiting groove is in a circular groove.

[0015] Furthermore, the cooling fan also includes: a limit sleeve, installed on the machine head, the axis of the limit sleeve is collinear with the rotation axis of the machine head; a fixed sleeve, installed on the fuselage, the limit sleeve is passed through the fixed sleeve; a torsion spring, the first end of the torsion spring is fixed on the limit sleeve, and the second end is fixed on the fixed sleeve, and the torsion spring provides pre-tightening force to the machine head.

[0016] Furthermore, the fixing sleeve is provided with an assembly groove and an avoidance groove, and the avoidance groove is connected to the assembly groove; the limiting sleeve is provided with an assembly rod, the assembly rod is passed through the assembly groove, and the assembly rod can rotate in the assembly groove; a boss structure is provided on the outer circumferential surface of the assembly rod, the boss structure protrudes from the outer circumferential surface of the assembly rod, and the shape and position of the avoidance groove match the boss structure; the avoidance groove is used to avoid the boss structure when the assembly rod is installed through the assembly groove; the boss structure rotates and staggers the avoidance groove after passing through the avoidance groove, and forms an anti-slip limit fit with the fixing sleeve.

[0017] The cooling fan can be manually adjusted to directly adjust the head for air supply to move up and down, thereby achieving a large-angle air supply in the vertical direction. The user can manually adjust the air outlet angle as needed. When the need is met, the limit structure directly limits and fixes the head, so that the head is facing the desired direction to supply air. This structure solves the disadvantage of previous cooling fans that they can only move left and right, and greatly increases the air supply range of the cooling fan. In addition, the cooling fan of the present invention can also be combined with the left and right air supply to design multiple movement paths, realize multiple air supply modes, and achieve large-angle and large-range air supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a schematic diagram of the exploded structure of a cooling fan according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the exploded structure of the cooling fan portion of an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the internal structure of a cooling fan according to an embodiment of the present invention;

[0021] Figure 4 1 is a schematic structural diagram of a limit head of a cooling fan according to an embodiment of the present invention;

[0022] Figure 5 2 is a schematic structural diagram of an angle limiting piece of a cooling fan according to an embodiment of the present invention;

[0023] Figure 6 1 is a schematic structural diagram of a fixing plate of a cooling fan according to an embodiment of the present invention;

[0024] Figure 7 1 is a schematic structural diagram of a rotating shaft of a cooling fan according to an embodiment of the present invention;

[0025] Figure 8 1 is a schematic structural diagram of a limiting sleeve of a cooling fan according to an embodiment of the present invention;

[0026] Figure 9 It is a structural schematic diagram of a fixing sleeve of a cooling fan according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0028] See also Figures 1 to 9 As shown, according to an embodiment of the present invention, a cooling fan is provided. The cooling fan includes a body 10, a head 20, and a limiting structure. The head 20 is used to supply air. The head 20 is rotatably connected to the body 10. By rotating the head 20, the cooling fan moves up and down to supply air. The head 20 is assembled with the body 10 via the limiting structure. The limiting structure is used to limit and fix the head 20 at different air supply angles.

[0029] The cooling fan can be manually adjusted to directly adjust the head for air supply to move up and down, thereby achieving a large-angle air supply in the vertical direction. The user can manually adjust the air outlet angle as needed. When the need is met, the limit structure directly limits and fixes the head, so that the head is facing the desired direction to supply air. This structure solves the disadvantage of previous cooling fans that they can only move left and right, and greatly increases the air supply range of the cooling fan. In addition, the cooling fan of the present invention can also be combined with the left and right air supply to design multiple movement paths, realize multiple air supply modes, and achieve large-angle and large-range air supply.

[0030] Combine Figures 1 to 3As shown, the limiting structure includes an elastic member 31, a limiting head 32 and an angle limiting piece 33. The first end of the elastic member 31 is connected to the machine head 20; the limiting head 32 is connected to the second end of the elastic member 31, and the limiting head 32 moves as the random head 20 rotates. The angle limiting piece 33 is fixedly connected to the fuselage 10, and the angle limiting piece 33 is arranged corresponding to the limiting head 32. The angle limiting piece 33 is provided with a plurality of limiting holes 33a corresponding to the moving trajectory of the limiting head 32. The limiting head 32 has a first state in which it is extended and limitedly engaged with the limiting hole 33a, and the limiting head 32 has a second state in which it is retracted and disengaged from the limiting hole 33a. The limiting head 32 can move to different limiting holes 33a as the random head 20 rotates. Since the limiting head 32 moves as the random head rotates, its movement trajectory is in an arc shape, and the arrangement of the plurality of limiting holes 33a is arranged based on the above-mentioned arc shape, which can be obtained from Figure 5 As can be seen from the figure, the centers of the plurality of limiting holes 33a form an arc-shaped fitting curve.

[0031] When the user needs to rotate the handpiece up or down, they simply manually rotate the handpiece. As they rotate the handpiece, the stopper 32 retracts and disengages the stopper hole 33a. When the handpiece is rotated to the desired position, the stopper 32 extends and engages the stopper hole 33a, forming a stopper. The cooperation between the stopper 32 and the angle stopper 33 secures the handpiece in place, directing airflow in the desired direction. To adjust the airflow angle, the user rotates the handpiece again, achieving the up and down movement function.

[0032] Preferably, the machine head 20 is provided with a mounting hole 21, an elastic member 31 is positioned within the mounting hole 21, and a stopper 32 is at least partially positioned within the mounting hole 21, with the stopper 32 being slidable within the mounting hole 21. The elastic member 31 is a spring. One end of the spring is fixed to the bottom of the mounting hole 21, and the second end of the spring is fixedly connected to the stopper 32. The stopper 32 slides within the mounting hole 21, allowing it to extend or retract within the mounting hole 21. The mounting hole 21 serves as both a mounting and assembly tool and a guide for the stopper 32.

[0033] See also Figure 4 The first end of the stopper 32 is connected to the elastic member 31, and the second end of the stopper 32 engages with the stopper hole 33a. A guide arc 32a is formed on the second end of the stopper 32. In this embodiment, the stopper 32 is shaped like a bullet head, with a spring sleeved over the first end of the stopper 32. The guide arc 32a forms a dome-shaped structure. The guide arc 32a is used to guide the stopper 32 when it is released from the stopper hole 33a, facilitating rotation of the handpiece 20 and reducing rotational resistance.

[0034] Combine Figure 6 and Figure 7The cooling fan further includes a fixed plate 41 , which is fixedly mounted on the fuselage 10 , and the angle limiting piece 33 is fixedly mounted on the fixed plate 41 .

[0035] The cooling fan further includes a rotating shaft 42, which is fixedly connected to the head 20. The axis of the rotating shaft 42 is collinear with the rotation axis of the head 20. The rotating shaft 42 passes through both the fixed plate 41 and the angle limit plate 33, and the rotating shaft 42 rotates relative to the fixed plate 41. The fixed plate 41 is used to mount the rotating shaft 42 and also limits the rotating shaft 42 to achieve structural coordination.

[0036] The fixed plate 41 has a limiting groove 411. The first end of the rotating shaft 42 forms a shaft cap 42a. The shaft cap 42a is located in the limiting groove 411, and the bottom wall of the limiting groove 411 is located between the shaft cap 42a and the machine head 20. The second end of the rotating shaft 42 passes through the bottom wall of the limiting groove 411 and is connected to the machine head 20. When the machine head drives the rotating shaft 42 to rotate, the shaft cap 42a moves in the limiting groove 411. The limiting groove 411 limits the shaft cap 42a, planning the movement trajectory of the shaft cap 42a, making the rotation of the rotating shaft 42 more stable. Increasing its rotational stability at the driven end of the machine head can make the machine head more stable when shaking up and down, and will not cause abnormal phenomena such as shaking, thereby improving the structural stability of the cooling fan.

[0037] A limiting boss 412 is formed in the limiting groove 411 of the fixed disk 41. The limiting boss 412 is arranged on the rotation path of the shaft cap 42a. The limiting boss 412 is used to limit the rotation of the shaft cap 42a of the random head 20. When the head rotates to the preset maximum rotation angle, the shaft cap 42a of the random head will hit the limiting boss 412, thereby forming a limit. At this time, the head can no longer rotate in one direction and has reached the maximum rotation angle. When the head reverses and rotates in the other direction, when the shaft cap 42a contacts the other side of the limiting boss 412 again, the maximum rotation angle in that direction is reached again. This rotation is repeated to achieve the automatic and repeated up and down shaking movement of the cooling fan head. The structural coordination of the limiting boss 412 and the shaft cap 42a achieves the functional effect of limiting the rotation angle of the head at the structural level. It also plays a structural protection role, preventing structural damage caused by excessive rotation of the head.

[0038] The shaft cap 42a is fan-shaped, while the retaining groove 411 is circular. Because the retaining boss 412 is positioned within the retaining groove 411, the space left for the shaft cap 42a to move is irregularly shaped, while the retaining groove 411 remains generally circular. The rotating shaft 42 is secured to the handpiece 20 with screws, facilitating disassembly and maintenance. In this embodiment, the handpiece is spherical in shape, with the axis of rotation passing through the center of the sphere. The axis of the rotating shaft 42 passes through this center.

[0039] Combine Figure 2 and Figure 3 The cooling fan further includes a limiting sleeve 50, a fixing sleeve 60, and a torsion spring 70. The limiting sleeve 50 is mounted on the handpiece 20, with its axis collinear with the rotation axis of the handpiece 20. The fixing sleeve 60 is mounted on the body 10, with the limiting sleeve 50 inserted into the fixing sleeve 60. The torsion spring 70 has a first end fixed to the limiting sleeve 50 and a second end fixed to the fixing sleeve 60, providing a preload force to the handpiece 20. The limiting sleeve 50 and fixing sleeve 60 are used to secure the handpiece to the body, and the torsion spring 70 provides a preload force to the handpiece 20 to prevent it from vibrating.

[0040] Combine Figure 3 、 Figure 8 、 Figure 9 Preferably, the fixing sleeve 60 is provided with an assembly groove 61 and an avoidance groove 62, and the avoidance groove 62 is connected to the assembly groove 61. The limiting sleeve 50 is provided with an assembly rod 51, which is inserted into the assembly groove 61 and can rotate in the assembly groove 61. A boss structure 52 is provided on the outer circumference of the assembly rod 51, and the boss structure 52 protrudes from the outer circumference of the assembly rod 51. The shape and position of the avoidance groove 62 match the boss structure 52. The avoidance groove 62 is used to avoid the boss structure 52 when the assembly rod 51 is installed through the assembly groove 61; after passing through the avoidance groove 62, the boss structure 52 rotates and staggers the avoidance groove 62, and forms an anti-slip limit fit with the fixing sleeve 60. When installing the limiting sleeve 50 and passing it through the fixing sleeve 60, align the boss structure 52 with the avoidance groove 62, and pass the assembly rod 51 through the assembly groove 61; after the boss structure 52 completely passes through the avoidance groove 62, the boss structure 52 is now located on the side of the fixing sleeve 60 away from the limiting sleeve 50. After the assembly rod 51 is installed in place, rotate the assembly rod 51, and the boss structure 52 is staggered with the avoidance groove 62, so that the boss structure 52 can prevent the limiting sleeve 50 from being separated from the fixing sleeve 60.

[0041] The head 20 includes a fan blade and a frame for blowing air. The fan blade is arranged in the frame. The air supply function of the head 20 is mainly achieved by the fan blade blowing air to form an airflow.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0044] Of course, the above are preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the basic principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A cooling fan, characterized in that: include: fuselage (10); A head (20), the head (20) is used for supplying air, the head (20) is rotatably connected to the body (10), and the head (20) rotates to enable the cooling fan to shake its head up and down to supply air; a limiting structure, wherein the head (20) is assembled with the body (10) via the limiting structure, and the limiting structure is used to limit and fix the head (20) at different air supply angles; The limiting structure includes: an elastic member (31), wherein a first end of the elastic member (31) is connected to the machine head (20); a limiting head (32), the limiting head (32) being connected to the second end of the elastic member (31), and the limiting head (32) moving along with the rotation of the machine head (20); An angle limiting piece (33), the angle limiting piece (33) is fixedly connected to the fuselage (10), the angle limiting piece (33) is arranged corresponding to the limiting head (32), and the angle limiting piece (33) is provided with a plurality of limiting holes (33a) corresponding to the movement track of the limiting head (32); The limiting head (32) has a first state in which it is extended and limitedly engaged with the limiting hole (33a), and a second state in which it is retracted and disengaged from the limiting hole (33a). The limiting head (32) can be moved to different limiting holes (33a) as the machine head (20) rotates. The cooling fan further comprises a fixed disk (41) and a rotating shaft (42), wherein the fixed disk (41) is fixedly mounted on the fuselage (10), and the angle limiting piece (33) is fixedly mounted on the fixed disk (41); the rotating shaft (42) is fixedly connected to the machine head (20), and the axis of the rotating shaft (42) is colinear with the rotation axis of the machine head (20), and the rotating shaft (42) passes through the fixed disk (41) and the angle limiting piece (33) at the same time. (42) rotates relative to the fixed disk (41); the fixed disk (41) has a limiting groove (411); the first end of the rotating shaft (42) forms a shaft cap (42a), the shaft cap (42a) is located in the limiting groove (411), and the bottom wall of the limiting groove (411) is located between the shaft cap (42a) and the machine head (20); the second end of the rotating shaft (42) passes through the bottom wall of the limiting groove (411) and is connected to the machine head (20).

2. The cooling fan according to claim 1, characterized in that A mounting hole (21) is provided on the machine head (20), the elastic member (31) is located in the mounting hole (21), the limiting head (32) is at least partially located in the mounting hole (21), and the limiting head (32) is slidable in the mounting hole (21).

3. The cooling fan according to claim 1, characterized in that The elastic member (31) is a spring.

4. The cooling fan according to claim 1, wherein: The first end of the limiting head (32) is connected to the elastic member (31), the second end of the limiting head (32) cooperates with the limiting hole (33a), and the second end of the limiting head (32) is formed with a guide arc surface (32a).

5. The cooling fan according to claim 1, wherein: A limiting boss (412) is formed in the limiting groove (411) of the fixed disk (41), and the limiting boss (412) is arranged on the rotation path of the shaft cap (42a). The limiting boss (412) is used to press against and limit the shaft cap (42a) that rotates with the machine head (20).

6. The cooling fan according to claim 1, characterized in that The shaft cap (42a) is in a fan-shaped structure, and the limiting groove (411) is in a circular groove.

7. The cooling fan according to claim 1, characterized in that Also includes: A limiting sleeve (50) is mounted on the machine head (20), wherein the axis of the limiting sleeve (50) is collinear with the rotation axis of the machine head (20); A fixing sleeve (60) is mounted on the body (10), and the limiting sleeve (50) is inserted into the fixing sleeve (60); A torsion spring (70), wherein a first end of the torsion spring (70) is fixed on the limiting sleeve (50) and a second end is fixed on the fixing sleeve (60), and the torsion spring (70) provides a pre-tightening force to the machine head (20).

8. The cooling fan according to claim 7, characterized in that The fixing sleeve (60) is provided with an assembly through groove (61) and an avoidance through groove (62), and the avoidance through groove (62) is connected to the assembly through groove (61); The limiting sleeve (50) is provided with an assembly rod (51), the assembly rod (51) is inserted into the assembly slot (61), and the assembly rod (51) can rotate in the assembly slot (61); A boss structure (52) is provided on the outer circumference of the assembly rod (51), the boss structure (52) protrudes from the outer circumference of the assembly rod (51), and the shape and position of the avoidance groove (62) match the boss structure (52); The avoidance slot (62) is used to avoid the boss structure (52) when the assembly rod (51) is installed through the assembly slot (61); after passing through the avoidance slot (62), the boss structure (52) rotates and staggers the avoidance slot (62), and forms an anti-slip limit fit with the fixing sleeve (60).

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