Outer tooth oscillating fan

Abstract

The utility model relates to the technical field of oscillating fans, and provides an external tooth oscillating fan which comprises a bottom disc, a supporting rod is installed on the top of the bottom disc, a rotating rod is rotationally connected to the top of the supporting rod, a hinge shaft is further installed on the top of the rotating rod, and a fan body is rotationally connected to the outer side of the hinge shaft. The rotating structure is arranged between the rotating rod and the supporting rod; by changing internal meshing transmission into external meshing transmission, a power transmission path is shortened, the number of middle transmission parts is reduced, and power loss caused by meshing of multiple stages of gears is avoided. The output end of the motor directly drives the outer gear to be meshed with the inner teeth of the end cover, the transmission efficiency is improved by more than 30%, the motor load is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of oscillating fan technology, specifically an external toothed oscillating fan. Background Technology

[0002] In the prior art, the oscillating structure of the fan support rod generally adopts an internal meshing transmission method. For example, a support rod oscillating structure and a fan using the structure are described in application number CN202222074794.9. The support rod oscillating structure includes a rotating seat and a support rod body, which houses an oscillating assembly and is rotatably connected to the rotating seat above it. The oscillating assembly includes a bushing, a main shaft, an end cover, and a motor. The main shaft is rotatably connected inside the bushing. The end cover is detachably fixed to the lower end face of the main shaft. An internal tooth is provided on the inner ring of the end cover. An external gear is fixed to the output end of the motor, and the external gear meshes with the internal tooth to drive the end cover to rotate. The main shaft rotates synchronously with the end cover.

[0003] The aforementioned patented transmission structure is complex. The motor output end needs to mesh with the internal gear of the inner ring of the end cover through an internal gear. An additional adapter is required to achieve synchronous rotation of the rotating seat and the metal shaft, resulting in a long transmission chain.

[0004] The internal meshing design requires a large meshing space inside the end cover, which limits the miniaturization of the support rod and the long gear stroke affects the rotation efficiency.

[0005] To address the problems raised in the background art, those skilled in the art have proposed an external toothed oscillating fan. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an external gear oscillating fan. By replacing the internal gear with an external gear, the gear stroke is shortened while the rotation effect is maintained, simplifying the oscillation structure and reducing manufacturing costs and maintenance difficulty.

[0007] An external toothed oscillating fan includes a base plate, a support rod is mounted on the top of the base plate, a rotating rod is rotatably connected to the top of the support rod, a hinge shaft is mounted on the top of the rotating rod, and a fan body is rotatably connected to the outer side of the hinge shaft.

[0008] A rotating structure is provided between the rotating rod and the support rod.

[0009] Preferably, the rotating structure includes a drive motor, which is mounted on the inner side of the support rod. The output end of the drive motor is fixedly connected to a transmission gear, and a semi-ring gear is meshed with the outer wall of the transmission gear.

[0010] Preferably, the front end of the semi-ring gear is half a gear and the rear end is a baffle.

[0011] Preferably, the semi-ring gear is also fixedly connected to the bottom end of the rotating rod.

[0012] Preferably, the output shaft on the outside of the drive motor is connected to the transmission gear.

[0013] Preferably, a bearing is provided on the outer side of the rotating rod, and the bearing is also provided on the inner side of the support rod. A power connector is provided on the top of the rotating rod, and a power connector is installed on the top of the power connector. A reinforcing rib is provided at the rear end of the rotating rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By changing the internal meshing transmission to the external meshing transmission, the power transmission path is shortened, the number of intermediate transmission components is reduced, and power loss caused by multi-stage gear meshing is avoided. The motor output directly drives the external gear to mesh with the internal gear of the end cover, improving transmission efficiency by more than 30%, while reducing the motor load and extending the motor's service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the sectional structure viewed from below;

[0018] Figure 3 This utility model Figure 2 A schematic diagram of the structure of the drive motor;

[0019] Figure 4 This utility model Figure 2 A cross-sectional view of the central support rod and the rotating shaft.

[0020] In the diagram: 1. Bottom plate; 3. Support rod; 4. Switch; 5. Rotating rod; 6. Hinge shaft; 7. Fan body; 8. Drive motor; 9. Transmission gear; 10. Half ring gear; 11. Bearing; 12. Power connector; 13. Power connector head; 14. Reinforcing rib. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] As attached Figure 1 To be continued Figure 4 As shown:

[0023] Example 1: According to Figures 1-4As shown, this utility model provides an external toothed oscillating fan, including a bottom plate 1, a support rod 3 installed on the top of the bottom plate 1, a rotating rod 5 rotatably connected to the top of the support rod 3, a hinge shaft 6 installed on the top of the rotating rod 5, and a fan body 7 rotatably connected to the outer side of the hinge shaft 6.

[0024] A rotating structure is provided between a rotating rod 5 and a support rod 3. The rotating structure includes a drive motor 8, which is mounted inside the support rod 3. A transmission gear 9 is fixedly connected to the output end of the drive motor 8. A semi-ring gear 10 is meshed with the outer wall of the transmission gear 9. The semi-ring gear 10 has a half-gear at its front end and a baffle at its rear end. The semi-ring gear 10 is also fixedly connected to the bottom end of the rotating rod 5. The output shaft of the drive motor 8 is connected to the transmission gear 9. A bearing 11 is provided on the outer side of the rotating rod 5, and the bearing 11 is also located inside the support rod 3. A power connector 12 is provided at the top of the rotating rod 5, and a power connector head 13 is mounted on the top of the power connector 12. A reinforcing rib 14 is provided at the rear end of the rotating rod 5. By changing the internal meshing transmission to external meshing transmission, the power transmission path is shortened, the number of intermediate transmission components is reduced, and power loss caused by multi-stage gear meshing is avoided. The motor output directly drives the external gear to mesh with the internal gear of the end cover, which improves the transmission efficiency by more than 30%, while reducing the motor load and extending the motor's service life.

[0025] After the drive motor 8 starts, it transmits power to the input shaft. The input shaft is fixedly connected to the transmission gear 9, which rotates together with the input shaft. The teeth of the transmission gear 9 are distributed on the outer diameter surface, which allows it to mesh more directly with the half-ring gear 10 during rotation.

[0026] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0027] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An external gear oscillating fan, characterized in that: Includes a bottom plate (1), a support rod (3) is installed on the top of the bottom plate (1), a rotating rod (5) is rotatably connected to the top of the support rod (3), a hinge shaft (6) is also installed on the top of the rotating rod (5), and a fan body (7) is rotatably connected to the outside of the hinge shaft (6). A rotating structure is provided between the rotating rod (5) and the support rod (3).

2. The external gear oscillating fan as described in claim 1, characterized in that: The rotating structure includes a drive motor (8), which is installed inside the support rod (3). The output end of the drive motor (8) is fixedly connected to a transmission gear (9), and the outer side wall of the transmission gear (9) is meshed with a semi-ring gear (10).

3. The external gear oscillating fan as described in claim 2, characterized in that: The front end of the semi-ring gear (10) is half a gear and the rear end is a baffle.

4. The external gear oscillating fan as described in claim 3, characterized in that: The semi-ring gear (10) is also fixedly connected to the bottom end of the rotating rod (5).

5. The external gear oscillating fan as described in claim 4, characterized in that: The output shaft on the outside of the drive motor (8) is connected to the transmission gear (9).

6. The external gear oscillating fan as described in claim 1, characterized in that: A bearing (11) is provided on the outer side of the rotating rod (5), and the bearing (11) is also provided on the inner side of the support rod (3). A power connector (12) is provided on the top of the rotating rod (5), and a power connector (13) is installed on the top of the power connector (12). A reinforcing rib (14) is provided at the rear end of the rotating rod (5).

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