Oscillating adjusting mechanism of industrial electric fan

Abstract

The utility model discloses a head shaking adjusting mechanism of an industrial electric fan. The head shaking adjusting mechanism comprises a shell flange, an adjusting wheel, a cover plate and a handle screw. A circular through hole is formed in the shell flange, an annular groove is formed in one end face of the shell flange, and a plurality of grooves are formed in the side wall of the circular through hole; one end of the adjusting wheel is provided with an annular flange, and the adjusting wheel is in clearance fit with the circular through hole; a threaded hole is formed in the end face of the other end of the adjusting wheel. A handle screw is arranged in the threaded hole; a blind hole is formed in the side wall of the adjusting wheel; springs and steel balls are arranged in the blind holes; the outer ends of the springs are in contact with the steel balls; the cover plate is connected with the shell through a flange, a connecting cylinder is arranged on the cover plate, and a mounting hole in the connecting cylinder is not coaxial with the circular through hole. The device is simple and compact in structure and low in cost; when the electric fan oscillating head is used, the oscillating head sweeping angle of the electric fan can be adjusted only by rotating the adjusting wheel and adjusting the position relation of the threaded hole and the connecting cylinder, operation is simple, and the oscillating head sweeping angle of the electric fan is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to an industrial electric fan head adjusting mechanism. BACKGROUND

[0002] Industrial electric fans have the advantages of large wind power, low price and simple operation. They are widely used in factories, catering, stores, night markets and many other public places. In order to increase the blowing area, all industrial electric fans are provided with a head shaking device. The head shaking device is a gear reduction mechanism, and is composed of a rocker arm and a head shaking pull rod. Due to the large power of the industrial electric fan, the large mesh cover and the heavy head, the opening and stopping of the head shaking function can only be realized by disassembling the screw at the bottom of the head shaking pull rod connected to the rocker arm shaft, adjusting the screw hole and the eccentric hole, and only in a fixed angle range. The fan must be turned off before operation, which is very inconvenient.

[0003] A kind of industrial electric fan head adjusting mechanism is disclosed in Chinese patent ZL201922154806.7. When the head is working, the adjusting wheel is easy to fall out of the shaft sleeve, and the steel ball flies out, causing a dangerous accident. SUMMARY

[0004] To solve the above technical problems, the utility model provides an industrial electric fan head adjusting mechanism which is simple in structure, easy to operate, low in cost, safe and reliable, and adjustable in angle size.

[0005] The technical scheme adopted by the utility model is as follows: an industrial electric fan head adjusting mechanism includes a shell flange, an adjusting wheel, a cover plate and a handle screw.

[0006] The adjusting wheel is in cylindrical structure, one end of the adjusting wheel is provided with an annular flange, the adjusting wheel is gap matched with the circular through hole, and the flange is supported on the bottom surface of the annular groove; the other end of the adjusting wheel is provided with a threaded hole on the end face, and the threaded hole is different in axis from the adjusting wheel; the threaded hole is provided with a handle screw; the side wall of the adjusting wheel is provided with a blind hole, the axis of the blind hole is perpendicular to the axis of the adjusting wheel; the blind hole is provided with a spring and a steel ball, and the outer end of the spring is in contact with the steel ball.

[0007] The cover plate is installed at one end of the shell flange provided with the annular groove, the cover plate is provided with a connecting barrel, the connecting barrel is provided with a mounting hole, the axis of the mounting hole is parallel to the axis of the circular through hole, and the mounting hole is different in axis from the circular through hole.

[0008] In the above industrial electric fan head adjusting mechanism, the side wall of the connecting barrel is provided with a tight screw.

[0009] In the aforementioned industrial electric fan oscillation adjustment mechanism, the housing flange is cylindrical, and the circular through hole is coaxial with the housing flange.

[0010] In the aforementioned industrial electric fan oscillation adjustment mechanism, the end face of the housing flange with the annular groove is provided with multiple screw holes, which are evenly arranged along the circumference and the circle containing the screw holes is located outside the annular groove; a through hole is provided at the edge of the cover plate corresponding to each screw hole, and the housing flange and the cover plate are connected by multiple screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention features a simple, compact, and low-cost structure. One end of the adjusting wheel is supported by a flange on the bottom surface of the annular groove of the housing flange. A cover plate seals the housing flange. When the adjusting wheel rotates, the flange always slides within the annular groove of the housing flange, resulting in smooth rotation, more precise gear adjustment, and easier installation. This invention uses a spring and steel balls to provide friction between the housing flange and the adjusting wheel. Two-thirds of the steel ball's diameter is always positioned within the blind hole. Multiple arc-shaped grooves are provided on the inner wall of the housing flange, which not only position the adjusting wheel but also prevent the spring from jamming the adjusting wheel during rotation, ensuring stable performance and reliable safety. In use, simply rotating the adjusting wheel and adjusting the position of the threaded hole and connecting cylinder allows for adjustment of the fan's oscillation angle. The operation is simple, enabling adjustment of the fan's oscillation angle. Attached Figure Description

[0013] Fig. 1 This is the front view of this utility model.

[0014] Fig. 2 This is a top view of the present invention.

[0015] Fig. 3 This is a structural diagram of the shell flange of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figs. 1-3 As shown, this utility model includes a housing flange 1, an adjusting wheel 2, a cover plate 3, and a handle screw 4. The housing flange 1 is cylindrical and has a circular through hole 11, which is coaxial with the housing flange 1. One end face of the housing flange 1 has an annular groove 12 and multiple screw holes 14, which are evenly arranged along the circumference and the circle containing the screw holes 14 is located outside the annular groove 12. The sidewall of the circular through hole of the housing flange 1 has multiple grooves 13, the cross-section of which is arc-shaped, and one end of which is located on the bottom surface of the annular groove 12.

[0018] The adjusting wheel 2 is a cylindrical structure, one end of the adjusting wheel 2 is provided with an annular flange 21, the adjusting wheel 2 is in clearance fit with the circular through hole, and the flange 21 is supported on the bottom surface of the annular groove 12. The other end of the adjusting wheel 2 is provided with a threaded hole 23 on the end face, the axis of the threaded hole 23 is parallel to the axis of the adjusting wheel 2, and the threaded hole 23 is coaxial with the adjusting wheel 2; the threaded hole 23 is provided with a handle screw 4. The side wall of the adjusting wheel 2 is provided with a blind hole 22, the axis of the blind hole 22 is perpendicular to the axis of the adjusting wheel 2. The blind hole 22 is provided with a spring 24 and a steel ball 25, the outer end of the spring 24 is in contact with the steel ball 25. The diameter of the steel ball 25 is 2 / 3 in the blind hole.

[0019] The cover plate 3 is provided with a connecting barrel 31, the connecting barrel 31 is provided with a mounting hole, the axis of the mounting hole is parallel to the axis of the shell flange 1, and the mounting hole is coaxial with the circular through hole 11; the side wall of the connecting barrel 31 is provided with a clamping screw 32.

[0020] When the utility model is used, the handle screw 4 is only needed to rotate the adjusting wheel 2, the position relationship of the threaded hole 23 and the connecting barrel 31 is adjusted, the angle size of the electric fan swing is adjusted, the operation is simple, and the angle size of the electric fan swing is adjusted.

Claims

1. An industrial electric fan head adjusting mechanism comprising a housing flange, an adjusting wheel, a cover plate and a handle screw; characterized in that: The shell flange is provided with a circular through hole, and an annular groove is arranged on one end surface of the shell flange, and a plurality of grooves are arranged on the side wall of the circular through hole, and the cross section of the groove is arc-shaped; The adjusting wheel is in cylindrical structure, and an annular flange is arranged on one end of the adjusting wheel, the adjusting wheel is in clearance fit with the circular through hole, and the flange is supported on the bottom surface of the annular groove; a threaded hole is arranged on the end surface of the other end of the adjusting wheel, the threaded hole is eccentric with the adjusting wheel; a handle screw is arranged in the threaded hole; a blind hole is arranged on the side wall of the adjusting wheel, the axis of the blind hole is perpendicular to the axis of the adjusting wheel; a spring and a steel ball are arranged in the blind hole, and the outer end of the spring is in contact with the steel ball; The cover plate is arranged on one end of the shell flange provided with the annular groove, the cover plate is provided with a connecting cylinder, the connecting cylinder is provided with a mounting hole, the axis of the mounting hole is parallel to the axis of the circular through hole, and the mounting hole is eccentric with the circular through hole.

2. The oscillating mechanism of an industrial electric fan according to claim 1, characterized in that: A set screw is arranged on the side wall of the connecting cylinder.

3. The oscillating mechanism of claim 1 wherein: The shell flange is in cylindrical structure, and the circular through hole is coaxial with the shell flange.

4. The oscillating mechanism of claim 1 wherein: A plurality of screw holes are arranged on the end surface of the shell flange provided with the annular groove, the plurality of screw holes are uniformly arranged along the circumferential direction, and the circle where the screw holes are located is located outside the annular groove; a through hole is arranged at the edge of the cover plate corresponding to each screw hole, and the shell flange and the cover plate are connected through the plurality of screws.

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