Pendulum device stable in transmission and fan using same

Abstract

The utility model relates to a blade swinging device stable in transmission and a fan using the blade swinging device. An existing swing page device is stuck. An air duct is arranged in the swing leaf frame, the blades are rotatably arranged in the swing leaf frame, the blades are rotatably mounted in the air duct through a transmission shaft, a driving motor is arranged on the side portion of the swing leaf frame, a driving shaft of the driving motor is connected with the transmission shaft of the blades through an eccentrically-arranged connecting rod, and the connecting rod is connected with the swing leaf frame. The driving motor drives the blades to rotate synchronously through the connecting rod. The eccentric connecting rod is arranged between the transmission shaft of the blade and the driving shaft of the driving motor, so that the situation that a transmission structure slips or is stuck due to deformation can be eliminated, the transmission stability is ensured, the structure is simplified, production, assembly and maintenance are convenient, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a leaf swinging device and a fan using the same. Background Art

[0002] The existing fans are all equipped with a swinging leaf device at the air outlet, which includes a drive motor and blades driven by the drive motor, and adjusts the airflow direction by swinging the blades. The drive shaft of the drive motor is linked to the transmission shaft of the blades through gears. Since the swinging leaf device is usually a plastic part with poor strength, when the blades or transmission shafts are deformed and rubbed, it will cause the gears to slip or the transmission to jam, which will not only cause the transmission structure to wear, but also produce abnormal noise, affecting the user experience. Utility Model Content

[0003] In order to address the deficiencies in the prior art, the utility model provides a leaf swing device with stable transmission and a fan using the same. An eccentric connecting rod is arranged between the transmission shaft of the blades and the driving shaft of the driving motor. This can not only eliminate the slippage or jamming of the transmission structure due to deformation and ensure transmission stability, but also simplify the structure, facilitate production and assembly and maintenance, and enhance the user experience.

[0004] The utility model is realized in the following manner: a swing leaf assembly structure with stable transmission, comprising a swing leaf frame with an internal air duct and blades rotatably arranged in the swing leaf frame, the blades being rotatably installed in the air duct via a transmission shaft, a driving motor being arranged on the side of the swing leaf frame, the driving shaft of the driving motor and the driving shaft of the blades being connected via an eccentrically arranged connecting rod, so that the driving motor drives the blades to rotate synchronously via the connecting rod. An eccentric connecting rod is arranged between the driving shaft of the blades and the driving shaft of the driving motor, which can eliminate the situation where the transmission structure slips or jams due to deformation, ensure the transmission stability, simplify the structure, facilitate production and assembly maintenance, and enhance the user experience.

[0005] Preferably, a swing rod of the same length is arranged between the drive shaft and the connecting rod, and between the connecting rod and the transmission shaft, so that the connecting rod is eccentrically arranged and the drive shaft and the transmission shaft are rotated synchronously through the swing rod. The swing rod has the same length, so that each section of the connecting rod can swing in a horizontal posture with the corresponding drive shaft or transmission shaft as the center, which not only effectively reduces the space required for the swing of the connecting rod, prevents the connecting rod from hitting and getting stuck during transmission, but also ensures that the drive shaft and the transmission shaft have the same angular velocity, ensures that the drive shaft and the transmission shaft rotate synchronously, and improves the control synchronization and accuracy.

[0006] Preferably, one end of the swing rod is rotatably connected to the connecting rod, and the other end is fixedly connected to the corresponding drive shaft or transmission shaft. The swing rods are arranged parallel to each other so that the connecting rod swings in a horizontal posture and realizes synchronous rotation between the drive shaft and the transmission shaft. Each section of the connecting rod is eccentrically connected to the corresponding drive shaft and transmission shaft through the corresponding swing rod. One end of the swing rod is rotatably connected to the connecting rod, so that the end of the swing rod offsets the rotation angle difference between the two by relative rotation with the connecting rod, ensuring that the connecting rod can drive the end of the swing rod to move horizontally in a horizontal posture and then use the swing rod to convert it into a circumferential force that drives the transmission shaft to rotate. The other end of the swing rod is fixedly connected to the transmission shaft or drive shaft, ensuring that the drive shaft can transmit the circumferential force to the swing rod, and also ensuring that the transmission shaft can receive the circumferential force through the swing rod. Since the swing rods are rigidly connected horizontally through the connecting rod, the friction force when the blades rotate is effectively resisted, ensuring smooth swinging of the blades.

[0007] Preferably, the blades can be swung and switched between a closed position for blocking the air duct and an open position for exposing the air duct. The blades can be used to block the air duct, making the surface of the air outlet smooth and improving the aesthetics, and can also guide and redirect the airflow in the air duct to ensure that the airflow is transported toward a preset area.

[0008] Preferably, the blades are at least two and arranged adjacent to each other, so that the blades can switch between an open position with the same orientation and a closed position for splicing and blocking the air duct. The blades are multiple and arranged in parallel, and the transmission shafts of the blades are connected to the same connecting rod, which can increase the covered air outlet area by increasing the number of blades, effectively reduce the width of a single blade, and thus reduce the thickness of the swinging device, making installation easier. The blades can also be synchronously controlled by sharing a common drive motor, simplifying the structure and improving control accuracy.

[0009] Preferably, the blades include upper blades and lower blades arranged parallel to each other, a ventilation channel is formed between the upper blades and the lower blades, and when the blades are switched to the open position, the ventilation channel guides the airflow in the air channel to be transported to a preset area. When the blades are in the closed position, the air channel can be blocked by the horizontally spliced ​​lower blades and the aesthetics can be improved. When the blades are in the open position, the airflow direction can be adjusted by adjusting the angle.

[0010] Preferably, a plurality of equally spaced connecting plates are provided between the upper blade and the lower blade to fix the relative position between the upper blade and the lower blade. The connecting plates play a role in fixing and positioning the upper blade and the lower blade, which not only improves the deformation resistance of the blade, but also guides the airflow to prevent the airflow from diffusing along the length direction of the blade.

[0011] Preferably, a mounting bracket is provided on the side of the end face of the swing frame, and the drive motor is fixedly connected to the mounting bracket through a pressing plate, so that the drive shaft and the transmission shaft are arranged flush with each other. The mounting bracket provides a mounting position for the drive motor, ensuring that the drive shaft of the drive motor can be connected to the end of the connecting rod and guide the transmission shaft to rotate synchronously. The middle part of the pressing plate fixedly connected to the mounting bracket at both ends cooperates with the mounting bracket to clamp the drive motor, which is convenient for disassembly and assembly of the drive motor and ensures that the position of the drive shaft is fixed.

[0012] Preferably, the end surface of the swing frame is provided with an assembly groove, and the connecting rod and the swing rod can be movably arranged in the assembly groove, and the notch of the assembly groove is blocked by a detachable baffle. The swing rod and the connecting rod are both arranged in the assembly groove, and the assembly groove reserves a movable space for the swing rod and the connecting rod, so that the drive shaft and the transmission shaft inserted in the assembly groove can be linked through the swing rod and the connecting rod. A baffle is arranged at the notch of the assembly groove to prevent foreign matter from entering the assembly groove, so as to ensure the smooth movement of the connecting rod and the swing rod.

[0013] A fan comprises a housing with an air outlet, wherein the swing leaf frame is arranged at the air outlet so that the air duct receives the airflow at the air outlet and transports it toward a preset area under the guidance of the blades. A swing leaf device is arranged at the air outlet to adjust the airflow direction at the air outlet and block the air outlet, so that the surface of the housing is flat and the aesthetics is improved.

[0014] The beneficial effects of the utility model are as follows: an eccentric connecting rod is arranged between the transmission shaft of the blade and the driving shaft of the driving motor, which can not only eliminate the slippage or jamming of the transmission structure due to deformation and ensure the transmission stability, but also simplify the structure, facilitate production and assembly and maintenance, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the disassembled structure of the leaf swinging device described in Example 1;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the leaf swinging device described in Example 1;

[0017] Figure 3 This is a schematic diagram of the structure of the blade described in Example 1;

[0018] In the figure: 1, swing leaf frame, 2, blades, 3, drive motor, 4, connecting rod, 5, swing rod, 6, drive shaft, 7, transmission shaft, 8, upper blades, 9, lower blades, 10, connecting plate, 11, pressing piece, 12, mounting bracket, 13, assembly groove, 14, baffle. DETAILED DESCRIPTION

[0019] The essential features of the present utility model are further described below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Embodiment 1:

[0021] This embodiment provides a page swinging device.

[0022] like Figure 1 and 2 The swing leaf device with stable transmission shown in the figure is composed of a swing leaf frame 1 with an internal air duct and a blade 2 rotatably arranged in the swing leaf frame 1. The blade 2 is rotatably installed in the air duct through a transmission shaft 7. A driving motor 3 is provided on the side of the swing leaf frame 1. The driving shaft 6 of the driving motor 3 and the driving shaft 7 of the blade 2 are connected by an eccentrically arranged connecting rod 4, so that the driving motor 3 drives the blade 2 to rotate synchronously through the connecting rod 4. An eccentric connecting rod 4 is arranged between the transmission shaft 7 of the blade 2 and the driving shaft 6 of the driving motor 3, which can not only eliminate the situation where the transmission structure slips or jams due to deformation, ensure the transmission stability, but also simplify the structure, facilitate production and assembly maintenance, and improve the user experience.

[0023] In this embodiment, the end surface of the swing leaf frame 1 is provided with a mounting groove 13, and the connecting rod 4 and the swing rod 5 can be movably arranged in the mounting groove 13. The driving motor 3 is mounted on the mounting bracket 12, the driving shaft 6 is exposed in the mounting groove 13 and connected to the end of the connecting rod 4 through the corresponding swing rod 5, the blade 2 is rotatably mounted in the air duct of the swing leaf frame 1 through the transmission shaft 7 arranged along its length direction, the transmission shaft 7 is exposed in the mounting groove 13 and connected to the corresponding section of the connecting rod 4 through the corresponding swing rod 5, one end of the swing rod 5 is rotatably connected to the connecting rod 4, and the other end is fixedly connected to the corresponding driving shaft 6 or transmission shaft 7 to ensure synchronous swinging, the driving shaft 6 and the transmission shaft 7 are aligned at the same height and the axes are arranged in the same direction, so that the connecting rod 4 can be suspended in a horizontal posture below the driving shaft 6 and the transmission shaft 7 through the swing rod 5.

[0024] When in use, the blades 2 can be swung and switched between the closed position for blocking the air duct and the open position for exposing the air duct under the drive motor 3. The drive motor 3 drives the drive shaft 6 to rotate, and the drive shaft 6 drives the connecting rod 4 to swing in a horizontal posture with the drive shaft 6 as the center through the corresponding swing rod 5. Since the connecting rod 4 is always in a horizontal posture, all the swing rods 5 can swing at the same angle under the drive shaft 6, and then the transmission shaft 7 and the drive shaft 6 can rotate at the same angular velocity, so that the blades 2 swing synchronously.

[0025] In this embodiment, the blades 2 are at least two and are arranged adjacent to each other, so that the blades 2 can switch between an open position with the same orientation and a closed position for splicing and blocking the air duct. By increasing the number of blades 2, the width of a single blade 2 is reduced, thereby reducing the space required for the blades 2 to swing, and all blades 2 can share a drive motor 3, effectively simplifying the structure and improving the transmission efficiency.

[0026] In this embodiment, swing rods 5 having the same length are arranged between the drive shaft 6 and the connecting rod 4, and between the connecting rod 4 and the transmission shaft 7, so that the connecting rod 4 is eccentrically arranged and the drive shaft 6 and the transmission shaft 7 are synchronously rotated through the swing rod 5. The swing rods 5 are arranged parallel to each other, and the swing rods 5 rotate at the same angle and speed, so that the connecting rod 4 swings in a horizontal posture and the drive shaft 6 and the transmission shaft 7 are synchronously rotated.

[0027] In this embodiment, the blade 2 includes an upper blade 8 and a lower blade 9 (such as Figure 3 As shown in the figure, a ventilation channel is formed between the upper blade 8 and the lower blade 9. When the blade 2 is switched to the open position, the ventilation channel guides the airflow in the air duct to be transported to the preset area. A plurality of equally spaced connecting plates 10 are provided between the upper blade 8 and the lower blade 9 to fix the relative position between the upper blade 8 and the lower blade 9. The space between the upper blade 8 and the lower blade 9 is divided into a plurality of unit channels by the connecting plates 10, which effectively improves the steering effect of the airflow, thereby ensuring that the airflow is transported to the preset area.

[0028] In this embodiment, a mounting bracket 12 is provided on the side of the end surface of the swing frame 1, and the drive motor 3 is fixedly connected to the mounting bracket 12 through a pressing plate 11, so that the drive shaft 6 and the transmission shaft 7 are arranged flush with each other. The middle part of the pressing plate 11 cooperates with the top surface of the mounting bracket 12 to clamp the drive motor 3, and the two ends are screwed and locked with the top surface of the mounting bracket 12 through fasteners to ensure that the drive motor 3 is firmly positioned on the mounting bracket 12.

[0029] In this embodiment, the notch of the assembly groove 13 is blocked by a detachable baffle 14, which effectively prevents foreign matter from entering the assembly groove 13 and jamming the connecting rod 4 and the rocker arm 5, thereby ensuring smooth operation of the transmission structure.

[0030] Embodiment 2:

[0031] Compared with the first embodiment, this embodiment provides a fan.

[0032] A fan is composed of a shell with an air outlet, wherein the swing leaf frame 1 is arranged at the air outlet so that the air duct receives the airflow at the air outlet and transports it toward a preset area under the guidance of the blades 2. The swing leaf frame 1 is inserted into the air outlet and fixedly connected so that the airflow flowing out of the air outlet must be transported outward through the air duct in the swing leaf frame 1, ensuring that the airflow can be transported to the preset area under the guidance of the blades 2.

Claims

1. A swing leaf device with stable transmission, comprising a swing leaf frame (1) with an air duct therein and blades (2) rotatably arranged in the swing leaf frame (1), wherein the blades (2) are rotatably installed in the air duct via a transmission shaft (7), characterized in that: A driving motor (3) is provided on the side of the swing leaf frame (1), and a driving shaft (6) of the driving motor (3) and a transmission shaft (7) of the blade (2) are connected via an eccentrically arranged connecting rod (4), so that the driving motor (3) drives the blade (2) to rotate synchronously via the connecting rod (4), and swing rods (5) of the same length are provided between the driving shaft (6) and the connecting rod (4), and between the connecting rod (4) and the transmission shaft (7), so that the connecting rod (4) is eccentrically arranged and the driving shaft (6) and the transmission shaft (7) are synchronously rotated via the swing rod (5), one end of the swing rod (5) is rotationally connected to the connecting rod (4), and the other end is fixedly connected to the corresponding driving shaft (6) or the transmission shaft (7), and the swing rods (5) are arranged parallel to each other, so that the connecting rod (4) swings in a horizontal posture and synchronously rotates the driving shaft (6) and the transmission shaft (7).

2. A leaf swinging device with stable transmission according to claim 1, characterized in that: The blade (2) can be swung and switched between a closed position for blocking the air duct and an open position for exposing the air duct.

3. A leaf swinging device with stable transmission according to claim 2, characterized in that: The blades (2) are at least two and are arranged adjacent to each other, so that the blades (2) can be switched between an open position with the same orientation and a closed position for splicing and blocking the air duct.

4. A leaf swinging device with stable transmission according to any one of claims 1 to 3, characterized in that: The blades (2) include an upper blade (8) and a lower blade (9) which are arranged parallel to each other, and a ventilation channel is formed between the upper blade (8) and the lower blade (9). When the blades (2) are switched to an open position, the ventilation channel guides the airflow in the air duct to be transported to a preset area.

5. A leaf swinging device with stable transmission according to claim 4, characterized in that: A plurality of equally spaced connecting plates (10) are provided between the upper leaf (8) and the lower leaf (9) so as to fix the relative position between the upper leaf (8) and the lower leaf (9).

6. A leaf swinging device with stable transmission according to any one of claims 1 to 3, characterized in that: A mounting bracket (12) is provided on the side of the end surface of the swing frame (1), and the drive motor (3) is fixedly connected to the mounting bracket (12) via a pressing sheet (11) so that the drive shaft (6) and the transmission shaft (7) are arranged flush with each other.

7. A leaf swinging device with stable transmission according to any one of claims 1 to 3, characterized in that: The end surface of the swing leaf frame (1) is provided with an assembly groove (13), the connecting rod (4) and the swing rod (5) are both movably arranged in the assembly groove (13), and the notch of the assembly groove (13) is blocked by a detachable baffle (14).

8. A fan using the flap device according to any one of claims 1 to 7, comprising a housing with an air outlet, characterized in that: The swing leaf frame (1) is arranged at the air outlet so that the air duct receives the airflow at the air outlet and transports it toward a preset area under the guidance of the blades (2).

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