CN213057505U - Main rotor hub overall design structure of unmanned helicopter - Google Patents
Main rotor hub overall design structure of unmanned helicopter Download PDFInfo
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- CN213057505U CN213057505U CN202020731141.1U CN202020731141U CN213057505U CN 213057505 U CN213057505 U CN 213057505U CN 202020731141 U CN202020731141 U CN 202020731141U CN 213057505 U CN213057505 U CN 213057505U
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Abstract
The utility model provides an integral design structure of a main hub of an unmanned helicopter, which comprises a cylindrical hub body and a hemispherical hub crown, wherein the hub body and the hub crown are integrally connected; the outer side of one end, far away from the hub crown, of the hub body is integrally connected with a circular hub ring, and hemispherical grooves are uniformly formed in the circular ring surfaces, opposite to the hub crown, of the hub ring along the circumferential direction; the propeller hub body is provided with a propeller shaft connecting hole in the middle at one end far away from the propeller hub crown, a first internal thread is arranged at the front section of the inside of the propeller shaft connecting hole, and an elastic ring is clamped at the rear section of the inside of the propeller shaft connecting hole. The utility model discloses increase the screw vertical and circumference direction spacing, prevent that the screw is not hard up, improved the stationarity of unmanned aerial vehicle screw, through the elastic ring of card dress improved design in the oar axle connecting hole, increase the locking force and the frictional force of oar hub body to the oar axle, improved the security of unmanned aerial vehicle flight.
Description
Technical Field
The utility model relates to unmanned air vehicle technical field especially involves an unmanned helicopter's main oar hub overall design structure.
Background
At present current unmanned aerial vehicle goes up the screw of screw generally chooseing for use the plastics material, the screw of plastics material generally will be through the secondary mould plastics to the screw propeller hub on, the outer wall structure of screw propeller hub distributes on the circumference has very tiny perpendicular line, and this kind of structure can only restrict the displacement on the screw circumference, can not restrict the displacement of its vertical direction, and circumferencial direction's spacing is also insecure moreover. The propeller is easy to loosen in the vertical direction after a long time under the conditions of high-speed rotation and vibration, the propeller does not rotate stably, and potential safety hazards are easy to cause; simultaneously some the screw propeller hub inside on the unmanned aerial vehicle is equipped with the internal thread at present, installs together through this internal thread and oar axle, and the oar axle drives the screw rotation. However, when the unmanned aerial vehicle rotates at a high speed and vibrates, the propeller is easy to fall off, and the unmanned aerial vehicle is known as a shooting propeller, so that a flight accident of the unmanned aerial vehicle can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a main oar hub global design structure of unmanned helicopter.
The utility model discloses a realize through following technical scheme:
the utility model provides a main oar hub global design structure of unmanned helicopter, this main oar hub global design structure of unmanned helicopter includes: the propeller comprises a cylindrical propeller hub body and a hemispherical propeller hub crown, wherein the propeller hub body is integrally connected with the propeller hub crown, and the propeller hub body is integrally connected with the propeller hub crown and then takes a mushroom shape; the outer side of one end, far away from the hub crown, of the hub body is integrally connected with a circular hub ring, the diameter of the hub ring is the same as the maximum diameter of the hub crown, the hub ring and the hub crown are provided with opposite circular ring surfaces, and hemispherical grooves are uniformly formed in the circumferential direction of the circular ring surfaces, opposite to the hub crown, of the hub ring and the hub crown; the propeller hub is characterized in that a propeller shaft connecting hole is formed in the middle of one end, away from a propeller hub crown, of the propeller hub body, a first internal thread is arranged at the front section of the inside of the propeller shaft connecting hole, an elastic ring is clamped at the rear section of the inside of the propeller shaft connecting hole, a radial protrusion is integrally connected to the middle section of the inside of the elastic ring along the circumferential direction, and a second internal thread is arranged on the radial protrusion.
Preferably, the outer surface of the hub body is uniformly provided with vertical grooves along the circumferential direction, and the vertical grooves extend along the length direction of the hub body.
Preferably, the vertical groove is a polygonal groove which is radially recessed on the hub body at the middle position.
Preferably, the elastic ring is an elastic rubber ring.
Preferably, the elastic ring is of an I-shaped structure.
Preferably, the radial protrusion is in a circular arc structure.
In the above embodiment, the utility model discloses increase vertical and circumference direction spacing to the propeller, prevent that the screw is not hard up, cause rotatory not steady, improved the stationarity and the flight performance of unmanned aerial vehicle screw, through the elastic ring of the card dress improvement design in the oar axle connecting hole, increase the locking force and the frictional force of propeller hub body to the propeller shaft, prevent that unmanned aerial vehicle from taking place to penetrate the oar trouble, improved the security of unmanned aerial vehicle flight.
Drawings
Fig. 1 is a first structural schematic diagram of an overall design structure of a main hub of an unmanned helicopter according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of the overall design structure of the main hub of the unmanned helicopter according to the embodiment of the present invention;
fig. 3 is a schematic cross-sectional structural diagram of an overall design structure of a main hub of an unmanned helicopter provided by an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a vertical groove on a hub body according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
For the convenience of understanding the utility model provides a main propeller hub overall design structure of unmanned helicopter, the application scene of the main propeller hub overall design structure of unmanned helicopter that this application embodiment provided is explained at first, the main propeller hub overall design structure of unmanned helicopter that this application embodiment provided is mainly used for the secondary of unmanned helicopter upper propeller to mould plastics, the outer wall structure of propeller hub distributes on the circumference has very tiny vertical lines, this kind of structure can only restrict the displacement on the propeller circumference, can not restrict the displacement of its vertical direction, and circumferencial direction's spacing is also not firm. The propeller is easy to loosen in the vertical direction after a long time under the conditions of high-speed rotation and vibration, the propeller does not rotate stably, and potential safety hazards are easy to cause; simultaneously some the screw propeller hub inside on the unmanned aerial vehicle at present is equipped with the internal thread, installs through this internal thread and oar axle together, and the oar axle drives the screw rotation, but unmanned aerial vehicle is under the condition of high-speed rotation and vibration, and the screw drops easily, and the industry calls into penetrates the oar, can cause unmanned aerial vehicle's flight accident like this. Therefore, the application provides an integral design structure of a main hub of the unmanned helicopter.
Please refer to fig. 1 and fig. 2 together, in which fig. 1 is a first structural schematic diagram of a main hub overall design structure of an unmanned helicopter according to an embodiment of the present invention, and fig. 2 is a second structural schematic diagram of a main hub overall design structure of an unmanned helicopter according to an embodiment of the present invention.
As shown in fig. 1 and 2, the main hub of the unmanned helicopter is integrally designed to include a cylindrical hub body 1 and a hemispherical hub crown 2, the hub body 1 and the hub crown 2 are fixedly connected integrally, and the hub body 1 and the hub crown 2 are integrally connected to form a mushroom shape. The hub crown 2 is provided as a hemisphere, with a fluid spherical design to help reduce drag.
In addition, an annular hub ring 3 is integrally and fixedly connected to the outer side of one end of the hub body 1, which is far away from the hub crown 2, in this embodiment, the diameter of the hub ring 3 is the same as the maximum diameter of the hub crown 2, and since the diameter of the hub ring 3 and the maximum diameter of the hub crown 2 are both larger than the diameter of the hub body 1 and are respectively connected to two end positions of the hub body 1, the hub ring 3 and the hub crown 2 have opposite annular surfaces 4. Hemispherical grooves 5 are uniformly arranged on the annular surface 4 of the hub ring 3 opposite to the hub crown 2 along the circumferential direction. The recesses 5 on the annular surface 4 of the hub ring 3 opposite the hub crown 2 may in particular be arranged opposite each other two by two.
In addition, the outer surface of the hub body 1 is uniformly provided with vertical stripe grooves 11 along the circumferential direction, and the vertical stripe grooves 11 extend along the length direction of the hub body 1. Referring to fig. 4, fig. 4 is a schematic cross-sectional view of a vertical groove on a hub body according to an embodiment of the present invention, and as shown in fig. 4, the vertical groove 11 is a polygonal groove that is radially recessed on the hub body 1 at an intermediate position.
Please refer to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of an overall design structure of a main hub of an unmanned helicopter according to an embodiment of the present invention. As shown in fig. 3, after the propeller 12 is injection-molded onto the hub body 1 for the second time, the propeller 12 can be vertically limited by the hub ring 3 and the hub crown 2, and the structural design of the vertical groove 11 is combined, so that the vertical limit is more ideal than the prior art, and the propeller 12 can be circumferentially limited by the hub ring 3 and the groove 5 on the circular ring surface 4 of the hub crown 2, so that the propeller 12 is not easily loosened after being used for a long time.
With reference to fig. 3, a propeller shaft connecting hole 6 is formed in the center of one end of the propeller hub body 1, which is far away from the propeller hub crown 2, a first internal thread 7 is arranged at the front section of the inside of the propeller shaft connecting hole 6, and the first internal thread 7 is used for being fixedly and spirally connected with an external thread on the propeller shaft. The inner rear section of the paddle shaft connecting hole 6 is clamped with an elastic ring 8, the elastic ring 8 is an elastic rubber ring, the elastic ring 8 is of an I-shaped structure, the inner rear section of the paddle shaft connecting hole 6 is provided with a clamping position on the inner wall of the paddle shaft connecting hole 6, the elastic ring 8 is clamped on the position, and the elastic ring 8 is not easy to fall off after being clamped through the clamping position design shown in figure 3. In order to prevent the elastic ring 8 from shifting easily after being clamped, a hemispherical limiting bulge can be arranged on the outer wall of the clamped elastic ring 8, and a hemispherical limiting groove matched with the limiting bulge is processed and arranged on a clamping position of the paddle shaft connecting hole 6 on the basis of the clamping position design shown in fig. 3.
Furthermore, a radial protrusion 9 is fixedly connected to the inner middle section of the elastic ring 8 along the circumferential direction, the radial protrusion 9 is of an arc-shaped structure, and a second internal thread 10 is arranged on the radial protrusion 9. In this embodiment, when the propeller shaft is inserted into the propeller shaft connecting hole 6, the external thread at the end of the propeller shaft is firstly screwed with the second internal thread 10 on the radial protrusion 9 inside the elastic ring 8, and because the elastic ring 8 has elasticity, the external thread part on the propeller shaft can be fixedly screwed with the first internal thread 7 at the front section inside the propeller shaft connecting hole 6 after being extruded through the position of the radial protrusion 9, and the radial protrusion 9 at this time can be tightly held on the propeller shaft, so that the locking force and the friction force of the propeller hub body 1 on the propeller shaft can be increased, and the occurrence of the propeller shooting phenomenon can be prevented.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A main rotor hub overall design structure of an unmanned helicopter is characterized by comprising: the propeller comprises a cylindrical propeller hub body and a hemispherical propeller hub crown, wherein the propeller hub body is integrally connected with the propeller hub crown, and the propeller hub body is integrally connected with the propeller hub crown and then takes a mushroom shape; the outer side of one end, far away from the hub crown, of the hub body is integrally connected with a circular hub ring, the diameter of the hub ring is the same as the maximum diameter of the hub crown, the hub ring and the hub crown are provided with opposite circular ring surfaces, and hemispherical grooves are uniformly formed in the circumferential direction of the circular ring surfaces, opposite to the hub crown, of the hub ring and the hub crown; the propeller hub is characterized in that a propeller shaft connecting hole is formed in the middle of one end, away from a propeller hub crown, of the propeller hub body, a first internal thread is arranged at the front section of the inside of the propeller shaft connecting hole, an elastic ring is clamped at the rear section of the inside of the propeller shaft connecting hole, a radial protrusion is integrally connected to the middle section of the inside of the elastic ring along the circumferential direction, and a second internal thread is arranged on the radial protrusion.
2. The unmanned helicopter main hub overall design structure of claim 1, characterized in that the hub body outer surface is uniformly provided with vertical grooves along the circumferential direction, and the vertical grooves extend along the length direction of the hub body.
3. The unmanned helicopter main hub overall design structure of claim 2, characterized in that said vertical groove is a polygonal groove that is radially recessed on said hub body at an intermediate position.
4. The unmanned helicopter main hub design structure of claim 1, wherein the elastic ring is an elastic rubber ring.
5. The unmanned helicopter main hub design structure of claim 4, wherein the elastic ring is an I-shaped structure.
6. The unmanned helicopter main hub design structure of claim 1, wherein the radial protrusions are circular arc shaped structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731141.1U CN213057505U (en) | 2020-05-07 | 2020-05-07 | Main rotor hub overall design structure of unmanned helicopter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020731141.1U CN213057505U (en) | 2020-05-07 | 2020-05-07 | Main rotor hub overall design structure of unmanned helicopter |
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| CN213057505U true CN213057505U (en) | 2021-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361732A (en) * | 2020-05-07 | 2020-07-03 | 天峋创新（北京）科技有限公司 | Main rotor hub overall design of unmanned helicopter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361732A (en) * | 2020-05-07 | 2020-07-03 | 天峋创新（北京）科技有限公司 | Main rotor hub overall design of unmanned helicopter |
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