Impact protection structure for propeller of model airplane

Abstract

The utility model discloses an impact protection structure for a propeller of a model airplane. The impact protection structure comprises a rotating motor, a plastic gear is arranged at the front end of the rotating motor, a propeller base is movably installed on the surface of the plastic gear, propeller blades are arranged outside the propeller base, and a fairing is arranged outside the propeller blades. The propeller blades are fixed to the rotating motor in a buckle connection mode, the installation and replacement process of the propeller blades is simplified, damage and maintenance times caused by collision can be reduced due to the fact that the buckle structure has the advantages of being easy to disassemble and assemble and protective, and the propeller blades can be fixed to the rotating motor through the cooperation of the buffer base plate, the buffer spring and the elastic buffer ball. Therefore, the propeller blades can be automatically released when being impacted, and impact force is prevented from being transmitted to the rotating motor, so that the rotating motor and the rotating shaft are protected from being damaged, the safety of the small model airplane is remarkably improved when the small model airplane is accidentally impacted, and the rotating motor and the propeller blades are effectively prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation models, in particular to an aircraft model propeller impact protection structure. Background Art

[0002] Aviation models are a general term for various aircraft models, including model airplanes and other model aircraft. With the development of science and technology and the improvement of people's living standards, aviation models have gradually become popular among technology enthusiasts, and people often participate in aviation model activities.

[0003] The existing technology has the following problems:

[0004] In the existing technology, the propellers of small model aircraft are usually fixed directly to the motor with screws. However, this fixing method has obvious problems. When the propeller is hit during flight, it may hinder the rotation of the motor, causing the motor to short-circuit and burn or the rotating shaft to deform. At the same time, due to the continuous rotation of the motor, the propeller is also easily damaged when hit. These problems not only affect the service life of the model aircraft, but also increase maintenance costs. Utility Model Content

[0005] In response to the problems in the related art, the present invention proposes a propeller impact protection structure for a model aircraft to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted in this utility model are as follows:

[0007] A propeller impact protection structure for a model aircraft includes a rotating motor, a plastic gear is provided at the front end of the rotating motor, a propeller base is movably mounted on the surface of the plastic gear, propeller blades are provided on the outside of the propeller base, and a fairing is provided on the outside of the propeller blades. A male buckle body is fixedly connected to the edge of the outer wall of the propeller base, a female buckle body is provided on the surface of the plastic gear near the edge, a snap-fit ​​groove is provided in front of the female buckle body, and the size of the male buckle body matches the opening size of the snap-fit ​​groove.

[0008] Preferably, a buffer spring is provided inside the snap-fit ​​groove near the edge, and a buffer pad is fixedly connected to the top of the buffer spring. The buffer spring and buffer pad are provided to give the snap-fit ​​structure a certain elasticity so that it can be automatically released when the propeller blade is hit, avoiding the transmission of the impact force to the rotating motor, thereby protecting the rotating motor and the rotating shaft from damage.

[0009] Preferably, the bottom of the buffer spring is fixedly connected with a docking sleeve, and the bottom inside the clamping groove is fixedly connected with a connecting column. The docking sleeve is inserted into the connecting column, so that the buffer spring can be movably installed in the clamping groove, and disassembly and replacement are more convenient.

[0010] Preferably, magnetic patches are provided on the interior of the docking sleeve and the top surface of the connecting column, and the two groups of magnetic patches are of the same size. By providing the two groups of magnetic patches, the docking stability between the buffer spring and the connecting column is further improved.

[0011] Preferably, multiple groups of elastic buffer balls are provided inside the snap-in groove, and the elastic buffer balls are located in the middle of the two groups of connecting columns. The elastic buffer balls are made of silicone material. The elastic buffer balls are provided, and the buffer plate will come into contact with it after it drops due to the contraction deformation of the buffer spring, thereby having a further buffering effect, thereby having a better buffering protection effect on the rotating motor.

[0012] Preferably, the surfaces of the male buckle body and the female buckle body are coated with a wear-resistant coating, and the wear-resistant coating is made of epoxy resin material. The male buckle body and the female buckle body are both made of plastic material. By setting the wear-resistant coating, the hardness and wear resistance of the buckle structure are increased, thereby making the buckle structure have better structural strength.

[0013] Preferably, the surface of the wear-resistant coating is superimposed with an anti-corrosion coating, and the anti-corrosion coating is a water-based coating made of highly chlorinated polyethylene. By setting the anti-corrosion coating, the environmental resistance of the buckle is increased, thereby making it have a longer service life.

[0014] The beneficial effects of the utility model are:

[0015] The propeller impact protection structure of the model aircraft fixes the propeller blades to the rotating motor through a snap connection, replacing the traditional mechanical screw fixing method, simplifying the installation and replacement process of the propeller blades, and improving the user experience. Moreover, since the snap structure is easy to disassemble and protect, it can reduce the damage and repair times caused by impact. It is combined with a buffer pad, buffer spring and elastic buffer ball so that the propeller blades can be automatically released when impacted, avoiding the transmission of impact force to the rotating motor, thereby protecting the rotating motor and the rotating shaft from damage. Therefore, the safety of the small model aircraft in the event of an accidental impact is significantly improved, and damage to the rotating motor and propeller blades is effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the plastic gear of the present utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the clamping slot of the present utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the propeller base of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure of the buffer spring and the connecting column of the utility model.

[0022] In the figure: 1. Rotating motor; 2. Plastic gear; 3. Propeller base; 4. Fairing; 5. Male buckle body; 6. Female buckle body; 7. Snap-in groove; 8. Buffer plate; 9. Elastic buffer ball; 10. Docking sleeve; 11. Buffer spring; 12. Connecting column; 13. Magnetic patch; 14. Wear-resistant coating; 15. Anti-corrosion coating; 16. Propeller blade. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the present utility model, a propeller impact protection structure for a model aircraft is provided.

[0025] Embodiment 1;

[0026] like Figure 1-Figure 5 As shown, the aircraft model propeller impact protection structure according to the embodiment of the present invention includes a rotating motor 1, a plastic gear 2 is provided at the front end of the rotating motor 1, a propeller base 3 is movably mounted on the surface of the plastic gear 2, a propeller blade 16 is provided on the outside of the propeller base 3, a fairing 4 is provided on the outside of the propeller blade 16, a male buckle body 5 is fixedly connected to the edge of the outer wall of the propeller base 3, a female buckle body 6 is provided on the surface of the plastic gear 2 near the edge, a snap-fit ​​groove 7 is provided in front of the female buckle body 6, and the size of the male buckle body 5 matches the opening size of the snap-fit ​​groove 7.

[0027] In this embodiment, a buffer spring 11 is provided inside the snap-fit ​​groove 7 near the edge, and a buffer pad 8 is fixedly connected to the top of the buffer spring 11. The buffer spring 11 and the buffer pad 8 are provided, so that the snap-fit ​​structure has a certain elasticity, so that it can be automatically released when the propeller blade 16 is hit, avoiding the transmission of the impact force to the rotating motor 1, thereby protecting the rotating motor 1 and the rotating shaft from damage.

[0028] In this embodiment, the bottom of the buffer spring 11 is fixedly connected to a docking sleeve 10, and the bottom inside the clamping groove 7 is fixedly connected to a connecting column 12. The docking sleeve 10 is inserted into the connecting column 12, so that the buffer spring 11 can be movably installed in the clamping groove 7, which makes disassembly and replacement more convenient.

[0029] In this embodiment, magnetic patches 13 are provided on the interior of the docking sleeve 10 and the top surface of the connecting column 12. The two groups of magnetic patches 13 are the same size. By setting up the two groups of magnetic patches 13, the docking stability between the buffer spring 11 and the connecting column 12 is further improved.

[0030] In this embodiment, multiple groups of elastic buffer balls 9 are arranged inside the snap-in groove 7. The elastic buffer balls 9 are located in the middle of the two groups of connecting columns 12. The elastic buffer balls 9 are made of silicone material. The elastic buffer balls 9 are arranged so that the buffer plate 8 will come into contact with it after it drops due to the contraction deformation of the buffer spring 11, thereby having a further buffering effect, thereby having a better buffering protection effect on the rotating motor 1.

[0031] Embodiment 2;

[0032] On the basis of the first embodiment, the preferred embodiment of the propeller impact protection structure provided by the present invention is as follows: Figures 1 to 5 As shown:

[0033] In this embodiment, the surfaces of the male buckle body 5 and the female buckle body 6 are coated with a wear-resistant coating 14, and the wear-resistant coating 14 is made of epoxy resin material. The male buckle body 5 and the female buckle body 6 are both made of plastic material. By setting the wear-resistant coating 14, the hardness and wear resistance of the buckle structure are increased, so that the buckle structure has better structural strength.

[0034] In this embodiment, the surface of the wear-resistant coating 14 is coated with an anti-corrosion coating 15. The anti-corrosion coating 15 is a water-based paint made of highly chlorinated polyethylene. The anti-corrosion coating 15 increases the environmental resistance of the buckle, thereby extending its service life.

[0035] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0036] In actual application, the propeller base 3 is inserted into the snap-fit ​​groove 7 in front of the female buckle body 6 through the male buckle body 5 on its outer side to dock and assemble it with the plastic gear 2. Since it is a snap-fit ​​connection, the docking and disassembly operations of the two are simplified. When the model aircraft is hit, the male buckle body 5 is forced to move downward inside the snap-fit ​​groove 7, and the male buckle body 5 will contact the buffer plate 8. The buffer plate 8 descends due to the contraction deformation of the buffer spring 11, and then contacts the elastic buffer ball 9, which has an effective buffering effect, so that the propeller blade 16 can be automatically released when it is hit, avoiding the transmission of the impact force to the rotating motor 1, thereby protecting the rotating motor 1 and the rotating shaft from damage. Therefore, the safety of the small model aircraft in the event of an accidental collision is significantly improved, and damage to the rotating motor 1 and the propeller blade 16 is effectively prevented. The surface of the snap-fit ​​structure is coated with a wear-resistant coating 14 and an anti-corrosion coating 15, which increases the structural strength and environmental resistance of the snap-fit ​​structure, giving it a longer service life.

[0037] In summary, with the help of the above-mentioned technical solution of the present invention, the propeller blade 16 is fixed to the rotating motor 1 through a snap connection, replacing the traditional mechanical screw fixing method, simplifying the installation and replacement process of the propeller blade 16, and improving the user experience. Moreover, since the snap structure is easy to disassemble and protect, it can reduce the damage and repair times caused by impact. In conjunction with the buffer pad 8, buffer spring 11 and elastic buffer ball 9, the propeller blade 16 can be automatically released when it is hit, avoiding the transmission of impact force to the rotating motor 1, thereby protecting the rotating motor 1 and the rotating shaft from damage. Therefore, the safety of the small model aircraft in the event of an accidental collision is significantly improved, and damage to the rotating motor 1 and the propeller blade 16 is effectively prevented.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A propeller impact protection structure for a model aircraft, comprising a rotary motor (1), characterized in that: The front end of the rotary motor (1) is provided with a plastic gear (2), a propeller base (3) is movably mounted on the surface of the plastic gear (2), a propeller blade (16) is provided on the outside of the propeller base (3), a fairing (4) is provided on the outside of the propeller blade (16), a male buckle body (5) is fixedly connected to the edge of the outer wall of the propeller base (3), a female buckle body (6) is provided on the surface of the plastic gear (2) near the edge, a snap-fit ​​groove (7) is provided in front of the female buckle body (6), and the size of the male buckle body (5) matches the opening size of the snap-fit ​​groove (7).

2. The aircraft model propeller impact protection structure according to claim 1, characterized in that: A buffer spring (11) is provided inside the clamping groove (7) near the edge, and a buffer pad (8) is fixedly connected to the top of the buffer spring (11).

3. The aircraft model propeller impact protection structure according to claim 2, characterized in that: The bottom of the buffer spring (11) is fixedly connected to a docking sleeve (10), and the bottom inside the clamping groove (7) is fixedly connected to a connecting column (12).

4. The aircraft model propeller impact protection structure according to claim 3, characterized in that: Magnetic patches (13) are provided inside the docking sleeve (10) and on the top surface of the connecting column (12), and the two groups of magnetic patches (13) have the same size.

5. The aircraft model propeller impact protection structure according to claim 3, characterized in that: A plurality of groups of elastic buffer balls (9) are arranged inside the clamping groove (7), and the elastic buffer balls (9) are located in the middle of the two groups of connecting columns (12). The elastic buffer balls (9) are made of silicone material.

6. The aircraft model propeller impact protection structure according to claim 1, characterized in that: The surfaces of the male buckle body (5) and the female buckle body (6) are both coated with a wear-resistant coating (14), and the wear-resistant coating (14) is made of epoxy resin material. The male buckle body (5) and the female buckle body (6) are both made of plastic material.

7. The aircraft model propeller impact protection structure according to claim 6, characterized in that: The surface of the wear-resistant coating (14) is coated with an anti-corrosion coating (15), and the anti-corrosion coating (15) is a water-based coating made of highly chlorinated polyethylene.

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