Non-equal-pitch propeller type rubber string model airplane
By improving the propeller structure and connection method of the rubber band model airplane, the problems of flight stability and safety were solved, the remote control of the tail and the emergency landing function were realized, and the model airplane flight experience was improved.
Patent Information
- Application Number
- CN202520477301.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-18
AI Technical Summary
The propeller structure of existing rubber band model airplanes is unreasonable, resulting in poor flight stability, easy failure of the stop pin, easy detachment of the tail boom, and lack of tail fin angle drive device, which affects flight safety and experience.
It adopts an unequal pitch propeller structure, with a stop pin at a 180° angle, and connects the tail boom through snap-fit protrusions and snap-fit grooves. The horizontal tail is controlled by a fusible rubber band and a pull line. Combined with wing parameter optimization, it can achieve tail flipping and remote control.
It significantly improves flight stability and safety, enables remote control of the tail fin and emergency landing functions, and enhances the flight experience for model aircraft enthusiasts.
Smart Images
Figure CN223911360U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to laser accessories technical field, concretely relates to a non equal helical pitch propeller type rubber model airplane. BACKGROUND
[0002] The existing rubber model airplane has the following defects:
[0003] 1. The structure shape of the propeller is unreasonable, causing poor stability in the flight process;
[0004] 2. The stop pin is in the form of penetrating, which is easy to be flattened by the pin, causing the stop function to fail;
[0005] 3. The simple insertion mode is used between the airplane tail rod and the fuselage, which is easy to cause the tail rod to fall off in the flight process, thereby affecting the safety of the flight;
[0006] 4. The lack of tail wing angle driving device cannot realize the tail wing overturning deceleration function. UTILITY MODEL CONTENTS
[0007] Therefore, the utility model provides a non equal helical pitch propeller type rubber model airplane to solve the above problems in the prior art. In order to achieve the above purpose, the utility model provides the following technical scheme: according to the first aspect of the utility model, a non equal helical pitch propeller type rubber model airplane, including fuselage, the front end of the fuselage is rotatably provided with a rotating connecting piece, the circumference of the rotating connecting piece is a radial non equal helical pitch propeller, the upper surface of the middle part of the fuselage is movably connected with a detachable wing, the tail part of the fuselage is rotatably connected with a sleeve, the tail end of the sleeve extends backward and is connected with a tail rod, the tail end of the tail rod is provided with a vertical tail wing and a reversible horizontal tail wing.
[0008] Further, the front end face and the rear end face of the rotating connecting piece are respectively provided with a stop pin A and a stop pin B, and the stop pin A and the stop pin B are distributed at an angle of 180°.
[0009] Further, the right pull bolt of the screw connection is arranged at the position where the fuselage front end face abuts against the rotating connecting piece.
[0010] Further, the tail end cylindrical surface of the fuselage is provided with a vertically extending clamping protrusion, the pipe surface of the sleeve is opened to form a clamping groove, and the clamping protrusion can be rotatably clamped in the clamping groove.
[0011] Further, the front edge of the horizontal tail wing is hinged on the tail rod, the surface of the horizontal tail wing is provided with a hook, the hook and the hinge shaft of the horizontal tail wing are connected through the tail wing rubber element with elasticity, the rear end of the pull line is connected with the middle part of the rear edge of the horizontal tail wing by passing through the tail end of the tail rod, the limiting piece is arranged on the pull line to limit the horizontal tail wing at the angle A, and the front end of the pull line extends to the lower side of the wing and is connected with the fusible rubber ring.
[0012] Further, the lower part of the wing is provided with a fuse circuit board, and the rubber ring is hung on the fuse circuit board.
[0013] Further, the lower surface of the tail rod is provided with a plurality of guides, and the pull line passes through the plurality of guides in sequence.
[0014] Further, the wingspan of the wing is 650mm, the maximum relative thickness is 4.5%, the maximum relative camber is 6% airfoil, and the wing has a circular arc upper angle.
[0015] Further, the wing is installed on the fuselage through the rubber element.
[0016] Further, the angle A is 45°.
[0017] The utility model has the advantages that: through the non-equal pitch propeller type rubber model aircraft of the utility model, through novel propeller structure, flight stability is obviously improved, remote control of the tail wing is realized, forced landing is realized, and flight experience of model aircraft lovers is obviously improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A perspective view of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0019] Figure 2 A front view of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0020] Figure 3 A schematic view of horizontal tail rotation of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0021] Figure 4 A partial structure view of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0022] Figure 5 A top view of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0023] Figure 6 A perspective view of a propeller of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0024] Figure 7 A perspective view of a propeller of a non-equal pitch propeller type rubber model aircraft is provided for some embodiments of the utility model.
[0025] Figure 8The utility model provides a kind of non-equal pitch propeller formula rubber band model aircraft's propeller plane structure chart for some embodiments of the utility model.
[0026] Figure 9 A kind of non-equal pitch propeller formula rubber band model aircraft's propeller partial structure chart for some embodiments of the utility model is provided.
[0027] Figure 10 A kind of non-equal pitch propeller formula rubber band model aircraft's propeller partial structure chart for some embodiments of the utility model is provided.
[0028] In the drawing, 1, propeller, 2, fuselage, 3, wing, 4, clamping protrusion, 5, sleeve, 6, tail rod, 7, vertical tail, 8, tail rubber band component, 9, horizontal tail, 10, hook, 11, rubber band ring, 12, pull line, 13, guide, 14, limiting piece, 15, clamping groove, 16, rotating connecting piece, 17, stop pin A, 18, stop pin B. DETAILED DESCRIPTION
[0029] The embodiments of the utility model are described below by specific specific embodiments, and other advantages and effects of the utility model can be easily understood by those skilled in the art from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0030] Embodiment 1
[0031] As Figures 1 to 10 shown, the utility model first aspect embodiment of a kind of non-equal pitch propeller formula rubber band model aircraft, including fuselage 2, the front end of fuselage 2 rotation is provided with rotating connecting piece 16, the circumference of rotating connecting piece 16 is radial unequal pitch propeller 1, the upper surface of the middle part of fuselage 2 is movably connected with detachable wing 3, the tail of fuselage 2 is rotationally connected with sleeve 5, the tail end of sleeve 5 extends rearward and is connected with tail rod 6, the end of tail rod 6 is provided with vertical tail 7 and reversible horizontal tail 9.
[0032] The technical effect reached by the above embodiment is that: through the non-equal pitch propeller formula rubber band model aircraft of the embodiment, through the novel propeller structure, the stability of flight is significantly improved, the tail wing can be controlled remotely to be raised, forced landing is realized, and the flight experience of model aircraft enthusiasts is significantly improved.
[0033] Embodiment 2
[0034] As Figures 1 to 10As shown, a non-equidistant pitch propeller rubber band model airplane includes all the contents of Embodiment 1. In addition, the front end face and rear end face of the rotating connector 16 are respectively provided with a stop pin A17 and a stop pin B18, and the stop pin A17 and the stop pin B18 are distributed at an included angle of 180°.
[0035] Optionally, a right pull bolt with a threaded connection is provided at the position where the front end face of the machine body 2 abuts against the rotating connecting piece 16.
[0036] The technical effects achieved by the above embodiments are as follows: by setting stop pins A17 and B18 distributed at a 180° angle, the stop function is effectively guaranteed and the stop function failure caused by the pins being flat is avoided; by setting the right pull bolt, the tilt angle of propeller 1 is effectively adjusted.
[0037] Example 3
[0038] like Figures 1 to 10 As shown, a non-uniform pitch propeller rubber band model airplane includes all the contents of Embodiment 2. In addition, a vertically extending snap-fit protrusion 4 is provided on the cylindrical surface of the tail end of the fuselage 2, and an opening is formed on the tube surface of the sleeve 5 to form a snap-fit groove 15. The snap-fit protrusion 4 can be rotatably snapped into the snap-fit groove 15.
[0039] The technical effect achieved by the above embodiment is that by setting the snap-fit protrusion 4 to be rotatably snapped into the snap-fit groove 15, the tail boom 6 is effectively prevented from falling off during flight, thus ensuring flight safety.
[0040] Example 4
[0041] like Figures 1 to 10 As shown, a non-equidistant pitch propeller-type rubber band model airplane includes all the contents of Embodiment 3. In addition, the leading edge of the horizontal tail 9 is hinged to the tail boom 6. A hook 10 is provided in the middle of the surface of the horizontal tail 9. The hook 10 is connected to the hinge axis of the horizontal tail 9 through an elastic tail wing rubber band 8. The rear end of the pull line 12 passes around the end of the tail boom 6 and is connected to the middle of the rear edge of the horizontal tail 9. A limiter 14 is provided on the pull line 12 to limit the horizontal tail 9 at angle A. The front end of the pull line 12 extends to the underside of the wing 3 and is connected to a fusible rubber band 11.
[0042] Optionally, a fusible circuit board is provided on the lower part of the wing 3, and the rubber band 11 is attached to the fusible circuit board.
[0043] Optionally, the lower surface of the tail rod 6 is provided with multiple guides 13, and the pull line 12 passes through the multiple guides 13 in sequence.
[0044] Optional, angle A is 45°.
[0045] The technical effects achieved by the above embodiment are that: by arranging the fusible rubber ring 11, the remote control of the horizontal tail 9 to rotate a certain angle is effectively realized, and the aerial braking of the model airplane during flight is realized; and by arranging the guide 13, the stability of the operation of the pull wire 12 is effectively ensured.
[0046] Embodiment 5
[0047] As shown in Figures 1 to 10 A non-equal-pitch propeller type rubber model airplane, comprising all the contents of embodiment 4, in addition, the wingspan of the wing 3 is 650mm, the maximum relative thickness is 4.5%, the airfoil with a maximum relative camber is 6%, and has a circular arc upper dihedral angle.
[0048] Optionally, the wing 3 is installed on the fuselage 2 through a rubber element.
[0049] The technical effects achieved by the above embodiment are that: by the parameters of the wing 3, the stability during flight is significantly improved.
[0050] In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0051] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0052] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0053] In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific feature, structure, material or characteristic described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0054] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the person skilled in the art can change, modify, replace and transform the above embodiments within the scope of the utility model.
[0055] In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific feature, structure, material or characteristic described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0056] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A non-geared propeller rubber band model aircraft, characterized by, The utility model provides a kind of aircraft, including fuselage (2), the front end of fuselage (2) is rotatably provided with rotary connecting piece (16), the circumference of rotary connecting piece (16) is radial unequal pitch propeller (1), the upper surface of the middle part of fuselage (2) is movably connected with detachable wing (3), the tail of fuselage (2) is rotatably connected with sleeve (5), the tail end of sleeve (5) extends rearward and is connected with tail rod (6), the end of tail rod (6) is provided with vertical tail (7) and reversible horizontal tail (9).
2. The non-equal-pitch propeller rubber band model airplane according to claim 1, characterized in that, The front end surface and the rear end surface of rotary connecting piece (16) are respectively provided with stop pin A (17) and stop pin B (18), and the two stop pins are distributed at an angle of 180 °.
3. The non-equal-pitch propeller rubber band model airplane according to claim 2, characterized in that, Right pull bolt is threadedly connected at the position where the front end surface of fuselage (2) abuts against rotary connecting piece (16).
4. The non-equal-pitch propeller rubber band model airplane according to claim 1, characterized in that, The cylindrical surface of the tail end of fuselage (2) is provided with vertically extending clamping protrusion (4), and the surface of sleeve (5) is provided with clamping groove (15) formed by opening, and clamping protrusion (4) is rotatably clamped in clamping groove (15).
5. The non-equal-pitch propeller rubber band model airplane according to claim 1, wherein The front edge of horizontal tail (9) is hinged to tail rod (6), the surface of horizontal tail (9) is provided with hook (10) in the middle part, hook (10) is connected between the hinge shaft of horizontal tail (9) by tail rubber band member (8) with elasticity, the rear end of pull cable (12) is connected with the middle part of rear edge of horizontal tail (9) by passing the end of tail rod (6), limit piece (14) is arranged on pull cable (12) to limit horizontal tail (9) at angle A, the front end of pull cable (12) extends to the lower part of wing (3) and is connected with fusible rubber ring (11).
6. The non-equal-pitch rubber band-powered propeller-driven rubber band-powered model airplane of claim 5, wherein, Wing (3) is provided with fuse circuit board in the lower part, and rubber ring (11) is hung on the fuse circuit board.
7. The non-equal-pitch rubber band-powered propeller-driven rubber band-powered model airplane of claim 6, wherein, Tail rod (6) is provided with a plurality of guide members (13) on the lower surface, and pull cable (12) passes through the plurality of guide members (13) in sequence.
8. The non-equal-pitch propeller rubber band model airplane of claim 1, wherein, The wing span of wing (3) is 650 millimeters, the maximum relative thickness is 4.5%, the airfoil has maximum relative camber of 6%, and has circular arc upper reflex angle.
9. The non-equal-pitch propeller rubber band model airplane according to claim 1, wherein Wing (3) is installed on fuselage (2) by rubber band member.
10. The non-equal-pitch propeller rubber band model airplane according to claim 5, characterized in that, Angle A is 45 °.