Left-right shaking driving mechanism of fan

Abstract

The utility model relates to the technical field of fans, in particular to a fan left-right shaking driving mechanism which comprises a mounting seat, a rotatable eccentric block is arranged on the surface of the mounting seat, an eccentric rod is fixedly connected to one end of the eccentric block, a rotating shaft is fixedly mounted at the bottom end of the mounting seat, and a supporting rod is movably arranged on the surface of the rotating shaft in a sleeved mode. The surface of the supporting rod is fixedly connected with a rail, the top face of the rail is provided with a sliding rail for the eccentric rod to do linear reciprocating motion in a matched mode, the top end of the mounting base is fixedly connected with a synchronous motor, the output end of the synchronous motor is fixedly connected with an output shaft, and the output shaft is fixedly connected to the top face of an eccentric block. The utility model aims to solve the problems that the existing fan left-right oscillating driving mechanism mostly adopts metal connecting rod transmission to realize left-right oscillating of a fan head, a metal rod body and a gasket are frequently rubbed and are easy to abrade, and the service life is shorter.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a left-right shaking drive mechanism for a fan. Background Art

[0002] The fan's left and right swing drive mechanism is a device that enables the fan to swing left and right to supply air. It mainly achieves this function through a combination of mechanical components. It uses the motor to drive the rotation, and through the transmission, it pushes the fan head to swing left and right to expand the air supply range. When the fan shakes left and right, it can evenly send the airflow to a wider area, allowing people in different positions to feel the cool wind, and avoiding the situation where only some areas are blown by wind while other areas are stuffy.

[0003] Existing fan left and right swing drive mechanisms mostly use metal connecting rod transmission to achieve left and right swing of the fan head. During the connecting rod transmission process, the gasket and the metal rod body are in direct contact and rub against each other during movement. The fan swings frequently, and this continuous friction will cause the material of the contact surface to gradually wear out. If the working environment is relatively harsh, the wear rate will be faster, which will lead to a shorter service life. Utility Model Content

[0004] The purpose of the utility model is to provide a fan left and right swing drive mechanism to solve the problem that the existing fan left and right swing drive mechanism mostly uses metal connecting rod transmission to realize the left and right swing of the fan head, the metal rod body and the gasket rub frequently and are easily worn, resulting in a short service life.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The fan's left and right shaking drive mechanism includes a mounting seat, a rotatable eccentric block is provided on the surface of the mounting seat, one end of the eccentric block is fixedly connected to an eccentric rod, a rotating shaft is fixedly installed on the bottom end of the mounting seat, a support rod is movably sleeved on the surface of the rotating shaft, a track is fixedly connected to the surface of the support rod, and the top surface of the track is provided with a slide rail for the eccentric rod to perform linear reciprocating motion.

[0007] Preferably, a synchronous motor is fixedly connected to the top end of the mounting seat, an output shaft is fixedly connected to the output end of the synchronous motor, and the output shaft is fixedly connected to the top surface of the eccentric block.

[0008] Preferably, a gasket is installed at the bottom end of the mounting seat, the gasket is fixedly connected to the rotating shaft, and a distance is left between the gasket and the support rod.

[0009] Preferably, a through hole is provided on the surface of the support rod for the rotation shaft to pass through movably, and the bottom end of the support rod is fixedly connected to a base.

[0010] Preferably, the support rod and the rail are both made of POM material.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. By setting the eccentric block and the track, the circular motion of the eccentric rod is converted into a linear reciprocating motion on the track, so that the friction is mainly concentrated on the surface of the eccentric rod and the wall of the slide rail. The eccentric rod does not contact the slide rail at a fixed point, which is equivalent to rolling friction. Compared with the continuous sliding friction of the connecting rod plus the gasket, the friction force of the rolling friction is relatively smaller, and the loss is relatively smaller, which is conducive to reducing friction loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is an exploded schematic diagram of the utility model as a whole;

[0015] Figure 3 This is a schematic structural diagram of the output shaft of the utility model;

[0016] Figure 4 This is a schematic structural diagram of the eccentric rod of the utility model;

[0017] Figure 5 This is a structural diagram of the support rod of the utility model.

[0018] In the figure: 1. Mounting base; 2. Synchronous motor; 3. Output shaft; 4. Eccentric block; 5. Eccentric rod; 6. Slide rail; 7. Track; 8. Support rod; 9. Base; 10. Rotating shaft; 11. Gasket; 12. Through hole. DETAILED DESCRIPTION

[0019] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 5 , the utility model provides a technical solution:

[0021] The fan's left and right shaking drive mechanism includes a mounting base 1, a rotatable eccentric block 4 is provided on the surface of the mounting base 1, one end of the eccentric block 4 is fixedly connected to an eccentric rod 5, a rotating shaft 10 is fixedly mounted on the bottom end of the mounting base 1, a support rod 8 is movably sleeved on the surface of the rotating shaft 10, a track 7 is fixedly connected to the surface of the support rod 8, and a slide rail 6 is provided on the top surface of the track 7 for the eccentric rod 5 to perform linear reciprocating motion;

[0022] The support rod 8 is fixed and the eccentric rod 5 is inserted into the slide rail 6. When the eccentric block 4 rotates, the eccentric rod 5 at its end will perform a circular motion, thereby causing the eccentric rod 5 to produce a linear reciprocating motion in the slide rail 6. Since the support rod 8 is fixed, the track 7 remains stationary. According to the principle of action and reaction force, the force will react to the mounting seat 1, thereby causing the mounting seat 1 to perform a left and right reciprocating shaking motion around the rotating shaft 10. Through the eccentric block 4 and the track 7, the circular motion of the eccentric rod 5 is converted into a linear reciprocating motion on the track 7, so that the friction is mainly concentrated on the eccentric rod 5 and the wall of the slide rail 6, and the eccentric rod 5 is not in contact with the slide rail 6 at a fixed point, which is equivalent to rolling friction. Compared with the continuous sliding friction of the connecting rod plus gasket, the friction force of the rolling friction is relatively smaller, and the loss is also relatively smaller.

[0023] The top of the mounting base 1 is fixedly connected to the synchronous motor 2, the output end of the synchronous motor 2 is fixedly connected to the output shaft 3, the output shaft 3 is fixedly connected to the top surface of the eccentric block 4, and since the eccentric rod 5 is arranged on the end surface of the eccentric block 4, the eccentric rod 5 and the output shaft 3 are not on the same axis, forming an eccentric structure as a whole.

[0024] A gasket 11 is installed at the bottom end of the mounting base 1, and the gasket 11 is fixedly connected to the rotating shaft 10. A gap is left between the gasket 11 and the support rod 8, which is beneficial to prevent the gasket 11 from rubbing against the support rod 8 when following the shaking of the mounting base 1. By setting the gasket 11, the gasket 11 and the rotating shaft 10 are both metal. Compared with the rotating shaft 10 directly connected to the plastic mounting base 1, the gasket 11 has more contact area with the mounting base 1, and can have multiple fixed connections, which is beneficial to increase the connection strength.

[0025] The surface of the support rod 8 is provided with a through hole 12 for the rotating shaft 10 to pass through. The bottom end of the support rod 8 is fixedly connected to the base 9, and the base 9 is fixedly connected to the fan support. The fan support supports the fan so that the base 9 and the support rod 8 are both fixed. The mounting base 1 is fixedly connected to the fan head component so that the fan head shakes when the mounting base 1 shakes its head.

[0026] The specific solution is as follows: the base 9 is fixedly installed on the fan support, and then the support rod 8 is fixedly installed on the upper end, and then the rotating shaft 10 is inserted into the through hole 12. During the insertion process, it must be ensured that the eccentric rod 5 also falls into the slide rail 6. Then the upper end of the mounting seat 1 is connected to the relevant components of the fan head, and the output shaft 3 is driven to rotate by starting the synchronous motor 2. The rotation of the output shaft 3 drives the eccentric block 4 to rotate, and the rotation of the eccentric block 4 drives the eccentric rod 5 to perform circular motion. When the eccentric rod 5 performs circular motion, the moving trajectory in the slide rail 6 is a reciprocating linear motion. Since the support rod 8 is stationary, according to the principle of action and reaction force, the force will react to the mounting seat 1, and then the mounting seat 1 will perform reciprocating shaking motion left and right with the rotating shaft 10 as the axis, so that the fan head connected to it will perform reciprocating shaking motion left and right.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan left and right shaking drive mechanism, comprising a mounting base (1), characterized in that: The surface of the mounting seat (1) is provided with a rotatable eccentric block (4), one end of the eccentric block (4) is fixedly connected to an eccentric rod (5), the bottom end of the mounting seat (1) is fixedly installed with a rotating shaft (10), the surface of the rotating shaft (10) is movably sleeved with a support rod (8), the surface of the support rod (8) is fixedly connected to a track (7), and the top surface of the track (7) is provided with a slide rail (6) for the eccentric rod (5) to perform linear reciprocating motion.

2. The fan left-right shaking drive mechanism according to claim 1, characterized in that: The top end of the mounting seat (1) is fixedly connected to a synchronous motor (2), the output end of the synchronous motor (2) is fixedly connected to an output shaft (3), and the output shaft (3) is fixedly connected to the top surface of the eccentric block (4).

3. The fan left-right swing drive mechanism according to claim 1, characterized in that: A gasket (11) is installed at the bottom end of the mounting seat (1), the gasket (11) is fixedly connected to the rotating shaft (10), and a distance is left between the gasket (11) and the support rod (8).

4. The fan left-right swing drive mechanism according to claim 1, characterized in that: The surface of the support rod (8) is provided with a through hole (12) for the rotating shaft (10) to movably penetrate, and the bottom end of the support rod (8) is fixedly connected to the base (9).

5. The fan left-right oscillation drive mechanism according to claim 1, characterized in that: The support rod (8) and the track (7) are both made of POM material.

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