Air circulation fan

Abstract

The utility model provides an air circulation fan which solves the problems that in the prior art, a swing mechanism, used for driving a machine head to swing, of an oscillating fan is intensively arranged in the machine head, so that the heat dissipation effect is poor, and a supporting piece used for supporting the machine head to swing is very thin and prone to damage. According to the air circulation fan, the head shaking function is achieved, the working range can be well enlarged, the swing mechanism used for achieving the head shaking function and the machine head are arranged in a separated mode, and the problem that the heat dissipation performance is poor due to concentrated arrangement is avoided; the machine head swings in the horizontal direction through the stand column, compared with the prior art, the structure is more stable and more durable, in addition, when the stand column swings, the blades on the side face can be driven to move, flowing of air in the fixing cover is accelerated, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an air circulation fan. Background Art

[0002] With the rise of modern technology, handheld fans have gradually been replaced by mechanical fans, electric fans, and air conditioners. An electric fan is a household appliance that uses an electric motor to drive the fan blades to rotate to accelerate the flow of air.

[0003] Existing electric fans generally have a function of shaking their heads, so that the head of the electric fan can swing left and right during operation. However, in this case, the mechanism for shaking the head is centrally arranged inside the head, making the space inside the head very crowded and the heat dissipation effect very poor. In addition, because the head itself is very heavy and has to swing back and forth, the support member for supporting the head is very thin and is easily damaged after long-term operation. Therefore, the purpose of this application is to propose an air circulation fan to solve the above problems. Summary of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an air circulation fan to solve the above problems.

[0005] To achieve the above object, an air circulation fan of the utility model includes a chassis, a fixed cover is detachably installed at the upper end of the chassis, a column is rotatably arranged inside the fixed cover, the upper end of the column is installed with a head, a swinging mechanism for driving the column to rotate is arranged inside the fixed cover, the swinging mechanism includes a fixed shaft, a connecting rod, a crank and a motor, the motor is fixed to the lower end of the column, the lower end of the fixed shaft is fixed to the fixed cover, one end of the connecting rod is rotatably connected to the upper end of the fixed shaft, the other end of the connecting rod is rotatably connected to one end of the crank, and the other end of the crank is rotatably connected to the output shaft of the motor.

[0006] Compared with the prior art, the utility model has the following advantages: The air circulation fan of the utility model has a "shaking head" function, which can well increase the working range. The swinging mechanism for realizing the "shaking head" function and the head are separately arranged, avoiding the problem of poor heat dissipation performance caused by centralized arrangement. In addition, the head realizes swinging in the horizontal direction through the column. Compared with the prior art, the structure is more stable and more durable. Moreover, when the column swings, it will also drive the blades on the side to move, accelerating the flow of air inside the fixed cover and improving the heat dissipation effect. Description of the Drawings

[0007] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification. They are used to explain the utility model together with the embodiments of the utility model and do not constitute a limitation to the utility model. In the drawings:

[0008] Figure 1 This is a three-dimensional structure diagram of the present utility model.

[0009] Figure 2 This is a structural diagram of the swing mechanism of the present utility model.

[0010] Figure 3 This is a partial structural diagram of the present utility model.

[0011] Figure 4 This is a structural diagram of the machine head of the present utility model.

[0012] Figure 5 This is a structural diagram of the column of the present utility model. Specific embodiments

[0013] The following will further elaborate on the specific embodiments of the present utility model in conjunction with the attached Figures 1-5 drawings.

[0014] As Figures 1-5 shown, an air circulation fan of the present utility model includes a chassis 10, a fixed cover 20 is detachably installed at the upper end of the chassis 10, a column 30 is rotatably arranged inside the fixed cover 20, a machine head 60 is installed at the upper end of the column 30, a swing mechanism 40 for driving the column 30 to rotate is arranged inside the fixed cover 20. During operation, the swing mechanism 40 inside the fixed cover 20 drives the column 30 to swing, and the swing of the column 30 drives the machine head 60 to swing in the horizontal direction. The swing mechanism 40 and the machine head 60 are separately arranged, avoiding the problem of poor heat dissipation caused by centralized arrangement. In addition, the machine head 60 realizes the swing in the horizontal direction through the column 30. Compared with the prior art, the structure is more stable and more durable.

[0015] The following is a specific embodiment of the swing mechanism 40, which includes a fixed shaft 41, a connecting rod 42, a crank 43 and a motor 44. The motor 44 is fixed to the lower end of the column 30, the lower end of the fixed shaft 41 is fixed to the fixed cover 20, one end of the connecting rod 42 is rotatably connected to the upper end of the fixed shaft 41, the other end of the connecting rod 42 is rotatably connected to one end of the crank 43, and the other end of the crank 43 is fixedly connected to the output shaft of the motor 44. The motor 44, the crank 43, the connecting rod 42 and the fixed cover 20 form a common crank - connecting rod swing mechanism. During operation, the external power supply of the motor 44 is connected, and the output shaft of the motor 44 drives the crank 43 to swing. Since the crank 43 is connected to the connecting rod 42, and the other end of the connecting rod 42 is connected to the fixed and immovable fixed shaft 41, the motor 44 swings back and forth under the reaction force, thus driving the machine head 60 to swing back and forth.

[0016] Please refer to Figures 2-3, a housing 50 is fixed to the lower end of the column 30, a motor 44 is fixed inside the housing 50, a rotating shaft 51 is fixed to the lower end of the housing 50, a pipe seat 21 is fixed to the fixed cover 20, the rotating shaft 51 is rotatably installed inside the pipe seat 21, the lower end of the fixed shaft 41 is fixedly connected to the pipe seat 21, the rotating shaft 51 is inserted into the pipe seat 21, and a screw rod 5 is threadedly connected to the lower end of the rotating shaft 51. When connecting the pipe seat 21 and the column 30, first put the pipe seat 21 on the rotating shaft 51. After installing the connecting rod 42 and the crank 43, insert the screw rod 5 into the rotating shaft 51 for positioning. In this way, fixing the pipe seat 21 to the fixed cover 20 through structures such as bolts completes the installation of the column 30, which is very convenient.

[0017] An installation pipe 22 is fixed to the lower end of the fixed cover 20, a fixed rod 11 is fixed to the chassis 10, and the installation pipe 22 is sleeved on the upper end of the fixed rod 11 and fixed by a bolt 12.

[0018] Please refer to Figures 4-5 , in some embodiments, a shaft hole 31 is provided through the upper end of the column 30, the machine head 60 is rotatably connected to the upper end of the column 30 through the shaft hole 31, a spring positioning pin 32 is slidably provided at the upper end of the column 30, the machine head 60 is provided with a positioning hole 61 corresponding to the spring positioning pin 32, a spring (not shown in the figure) is connected between the spring positioning pin 32 and the column 30, and the head of the spring positioning pin 32 is a semi-spherical structure. When the machine head 30 is rotated forcefully, the head of the spring positioning pin 32 will disengage from the positioning hole 61. When the machine head 60 is released, the spring positioning pin 32 moves to the corresponding positioning hole 61 and is snapped into the positioning hole 61 under the elastic force of the spring, realizing the angle fixation of the machine head 60.

[0019] A heat dissipation hole 23 is provided through the bottom side of the fixed cover 20, which is convenient for the heat dissipation of the motor 44 and the circuit board 45 inside the fixed cover 20.

[0020] A blade 52 is fixed to the side of the housing 50. When the column 30 swings, it drives the blade 52 to move, accelerating the air flow inside the fixed cover 20 and improving the heat dissipation effect.

[0021] Compared with the prior art, the present utility model has the following beneficial effects compared with the prior art: The air circulation fan of the present utility model has a "shaking head" function, which can well increase the working range. The swinging mechanism 40 and the machine head 60 for realizing the "shaking head" function are separately arranged, avoiding the problem of poor heat dissipation performance caused by centralized arrangement. In addition, the machine head 60 realizes the swing in the horizontal direction through the column 30. Compared with the prior art, the structure is more stable and more durable. Moreover, when the column 30 swings, it will also drive the blade 52 on the side to move, accelerating the air flow inside the fixed cover 20 and improving the heat dissipation effect.

[0022] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An air circulation fan, comprising a chassis, characterized in that: A fixed cover is detachably mounted on the upper end of the chassis, a column is rotatably mounted in the fixed cover, a machine head is mounted on the upper end of the column, a swing mechanism for driving the column to rotate is arranged in the fixed cover, the swing mechanism comprises a fixed shaft, a connecting rod, a crank and a motor, the motor is fixed to the lower end of the column, the lower end of the fixed shaft is fixed to the fixed cover, one end of the connecting rod is rotatably connected to the upper end of the fixed shaft, the other end of the connecting rod is rotatably connected to one end of the crank, and the other end of the crank is fixedly connected to the output shaft of the motor.

2. An air circulation fan according to claim 1, characterized in that: A shell is fixed at the lower end of the column, the motor is fixed in the shell, a rotating shaft is fixed at the lower end of the shell, a tube seat is fixed to the fixed cover, the rotating shaft is rotatably installed in the tube seat, and the lower end of the fixed shaft is fixedly connected to the tube seat.

3. An air circulation fan according to claim 1, characterized in that: A mounting pipe is fixed to the lower end of the fixing cover, a fixing rod is fixed to the chassis, and the mounting pipe is sleeved on the upper end of the fixing rod and fixed by bolts.

4. An air circulation fan according to claim 1, characterized in that: An axial hole is penetrated through the upper end of the column, and the machine head is rotatably connected to the upper end of the column through the axial hole.

5. An air circulation fan according to claim 4, characterized in that: The upper end of the column is provided with a spring positioning pin which is slidably provided, and the machine head is provided with a positioning hole corresponding to the spring positioning pin.

6. An air circulation fan according to any one of claims 1 to 5, characterized in that: The bottom side of the fixed cover is penetrated with a heat dissipation hole.

7. An air circulation fan according to claim 2, characterized in that: Blades are fixed to the side surfaces of the shell.

8. An air circulation fan according to claim 2, characterized in that: The rotating shaft is inserted into the pipe seat, and the lower end of the rotating shaft is threadedly connected with a screw rod.

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