CN101653661B - Propeller connector of electric-powered model airplane - Google Patents
Propeller connector of electric-powered model airplane Download PDFInfo
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- CN101653661B CN101653661B CN2009101766229A CN200910176622A CN101653661B CN 101653661 B CN101653661 B CN 101653661B CN 2009101766229 A CN2009101766229 A CN 2009101766229A CN 200910176622 A CN200910176622 A CN 200910176622A CN 101653661 B CN101653661 B CN 101653661B
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Abstract
The invention discloses a propeller connector of an electric-power model airplane, which is used for connecting an electric-power output shaft and the propeller in an electric-power model airplane with a propeller. Each electric-power model airplane has two connectors, wherein one of the connectors is connected with the electric-power output shaft of the model airplane, and the other connector is connected with the propeller of the model airplane; one of the two connectors is an elastic component provided with an open slot; and the two connectors are coaxially connected and can rotate together, but can be conveniently separated when impacted by external force. By using the connectors, on the premise that the propeller and the electric-power output shaft keep rotating together, when the propeller is impacted, the propeller and the electric-power output shaft can be effectively separated so as to prevent the power system of the model airplane using a motor as the power and the model airplane from being destroyed.
Description
Technical field
The present invention relates to the model airplane technical field, especially relating to motor is the electric-powered model airplane aircraft technology field of preposition power.
Background technology
In the model of an airplane, the particularly small-sized preposition motor power model of an airplane in the flight of compact simplified place, does not often have smooth landing runway mostly, and barrier is many, and screw is easy to strikes obstacles in-flight.In the prior art, the general mode that adopts screw directly to fixedly connected with motor power output shaft (comprising that electric machine main shaft or motor are the power output shaft of driven gear of the train of reduction gears of power), therefore awing, take off at the model of an airplane especially, in the landing process, in a single day screw is subjected to the barrier bump, the lighter's oar is disconnected, and the bending of weight person's electric machine main shaft is scrapped, even gang mould type aircraft also damages.
The model fan is the protection screw; also there is the people on motor output shaft, to fix a cylinder with two screws; form the oar pad; screw is enclosed within on the oar pad; and utilize two screws; putting rubber band is pressed on screw on the oar pad; the motor band the screw rotation in operate as normal like this; and when screw is accidentally impacted; under the effect of bump moment, the rubber band elongation of tying screw collapses, and screw gets and breaks away from the oar pad; thereby play the effect of protection screw to a certain extent, Fig. 1 is the connection diagram of this structure.
The screw protective device of this form of rubber band be with rubber band screw to be pressed on the oar pad, and the rotation of motor utilizes frictional force to drive screw as can be seen.Obviously, the delivery request of driving torque is realized with very big frictional force between motor-screw, and this frictional force realizes by the very big pressure of rubber band again, but when the warp tension ratio of rubber band was bigger, screw just was difficult to from the oar pad break away from; In time that guarantees that screw is impacted,, ratio was easier to break away from the oar pad, and the tension force of then tiing up the elastic of screw can not be too big.Therefore; the transmission of motor rotating torque is impacted with the protection screw and avoids damaging two specification requirements in the method; in this simple and easy technical scheme, be contradiction on the specification requirement direction, so the effect of this technical measures protection of screw in concrete practice is not satisfactory.
Because the existence of the problems referred to above is very restricted preposition motor power model especially in the development of small-sized machine.
Summary of the invention
Technical problem to be solved by this invention provides a kind of propeller connector of electric-powered model airplane; can guarantee that the electric-powered output shaft of model airplane is connected with the firm of screw; normally motor power is delivered under the prerequisite of screw; timely and electric-powered output shaft separated when screw was accidentally impacted, thereby effectively protected screw.
For this reason, the invention provides a kind of propeller connector of electric-powered model airplane, be used for connecting electric-powered output shaft and screw at electric-powered model airplane with screw, comprise two connectors, the electric-powered output shaft of one of them connector link model, and another connector is used for the screw of link model, a connector in described two connectors is the elastic component with open slot, described two connectors connect on same axial line and can rotate together, but the two can separate easily when being subjected to external impacts;
Wherein, the cavity shape of a connector in described two connectors is a drum organization, the maximum gauge of cross section circumscribed circle is greater than bottom, the external diameter of a circle of oral area cross section in the cydariform inner chamber, and another one connector profile can closely be wrapped up by this connector inner chamber;
Wherein, a connector in described two connectors has the convex tendon of the open slot on corresponding another connector, and the quantity of described convex tendon is at least one mostly to be the quantity of another connector upper shed groove most; When two connectors connected, described convex tendon embedded and makes two connectors can be located by connecting and can not relatively rotate in the described open slot, finishes the moment of torsion transmission between electric-powered output shaft and the screw; Be axial mated condition slidably between described convex tendon and the open slot, meet with in the external force detach procedures that described convex tendon slides and comes off to the opening part of open slot in open slot at two connectors;
Wherein, the cavity shape of a connector in described two connectors can be the twin drum shape structure that links to each other, the inner chamber of each drum organization be middle cross section circumscribed circle diameter greater than bottom, the external diameter of a circle of oral area cross section, and another one connector profile is can be by the tight twin drum shape structure of parcel of this connector inner chamber;
Wherein, the width of the opening part of described open slot is more than or equal to the width of the other end of open slot, and the shape of convex tendon and open slot coincide;
Wherein, the cross section of described two connectors is centrosymmetric cross section;
Wherein, the cross section of described two connectors can be circle or ellipse or polygon;
Wherein, when described cross section was polygon, the open slot position of described connector was on the corner or on the sideline;
Wherein, the described connector that is connected with screw can be shaped with the screw integral molded plastic;
Wherein, described model is that motor is the model airplane aircraft of power.
Because model propeller connector provided by the invention, to be used to connect the connection between electric-powered output shaft (comprise the axle of motor and be the axle of the deceleration system final stage driven gear of power with the motor) and the screw, be decomposed into two separable connectors, one of them connector is connected with screw, and another connector is connected with electric-powered output shaft.And the strain of utilizing the connector material realizes two embedding lockings between the connector, the screw that passes to motor power, and when screw is subjected to clashing into, one of them connector is prized by moment, pry open with being about to another connector, the connector distortion is unclamped and is made its connector with another embedding discharge.Therefore can be under the prerequisite that keeps screw and electric-powered output shaft to rotate together, when screw is clashed into, make with the motor to be that the dynamical system and the model of an airplane of the model of an airplane of power avoided being damaged, effectively broken through the technical bottleneck of the electric model airplane of preposition power.
Description of drawings
Fig. 1 is the screw protection connector explanation schematic diagram of available technology adopting rubber band form;
Fig. 2 is that cross section is circular cydariform connector structure explanation schematic diagram in specific embodiment of the present invention;
Fig. 3 A is that cross section is circular cydariform connector connection status cross-sectional view in specific embodiment of the present invention;
Fig. 3 B is that cross section is circular cydariform connector the come off cross-sectional view of state of two connectors under external force in specific embodiment of the present invention;
Fig. 4 is that cross section is the longitudinal profile structural representation of circular cydariform connector in specific embodiment of the present invention;
Fig. 5 is that cross section is oval-shaped cydariform connector schematic diagram in specific embodiment of the present invention;
Fig. 6 is that cross section is square cydariform connector schematic diagram in specific embodiment of the present invention;
Fig. 7 is that cross section is circular cydariform connector schematic diagram with symmetrical secant in specific embodiment of the present invention;
Fig. 8 is that cross section is octagonal cydariform connector schematic diagram in specific embodiment of the present invention;
Fig. 9 is molded motor in specific embodiment of the present invention, circle drum connector, screw assembling decomposing schematic representation;
Figure 10 is that cross section is circular cydariform connector structural representation in another specific embodiment of the present invention;
Figure 11 is that cross section is trapezoidal cydariform connector structural representation for circle, open slot and convex tendon in another specific embodiment of the present invention;
Figure 12 is the cydariform connector structural representation that has one and half drum organizations in specific embodiment of the present invention;
Figure 13 is the cydariform connector structural representation that has twin drum shape structure in specific embodiment of the present invention;
Figure 14 is the longitudinal profile structural representation that has the cydariform connector of twin drum shape structure in specific embodiment of the present invention;
Screw reaches the connector integral molded plastic shaped structures schematic diagram that is connected with screw in specific embodiment of Figure 15 the present invention;
Figure 16 is that screw reaches another connector integral molded plastic shaped structures schematic diagram that is connected with screw in another specific embodiment of the present invention;
Figure 17 is the assembling decomposition texture schematic diagram that has screw defencive function connector model airplane aircraft in specific embodiment of the present invention.
The specific embodiment
Further describe the specific embodiment of the present invention below in conjunction with accompanying drawing.
Connector with model propeller defencive function provided by the present invention; be used to connect the connection between electric-powered output shaft (comprise the axle of motor and be the axle of the deceleration system final stage driven gear of power with the motor) and the screw; comprise two separable connectors; one of them connector is connected with screw, and another connector is connected with electric-powered output shaft.Its basic functional principle is, utilize the strain of connector material to realize two embedding lockings between the connector, and with the screw that passes to of motor power, and when screw is subjected to clashing into, one of them connector is prized by moment, pry open with being about to another connector, the connector distortion is unclamped and is made its connector with another embedding discharge.
Because the required moment of separation of screw two connectors when being impacted is transmitted with the motor driving torque can be directly not interrelated between the two key element, so just can be in design than the requirement that is easier to satisfied two design considerations.With regard to specific design, on the project organization of connector, have at least one to be Flexible Connector and have open slot in two connectors, can certainly be elastic component by two connectors; Two connectors are the cross section that cross section is centrosymmetric, for example circular, oval, or circle adds one or several secant, or triangle, square, hexagon, octagonal polygon or the like, but no matter which kind of shape cross section is, two connectors are circle drum in the vertical, and the maximum gauge of cross section circumscribed circle is greater than bottom, the external diameter of a circle of oral area cross section in its cydariform inner chamber; One of them connector should have open slot, and one of them connector can closely wrap up by another connector inner chamber, and described two connectors connect back integral body and are spindle.
In the present invention, the transmission of the moment of torsion between electric-powered output shaft and the screw has two kinds of typical modes: the one, the shape of cross section of two connectors is designed to circle, and on the connector that open slot is not set, convex tendon is set, be the corner angle of projection, described convex tendon embeds another connector corresponding opening groove, makes two connectors can not rotate locked; The 2nd, two connector shape of cross sections are designed to ellipse or band rounded triangle or the band square of fillet or polygon or circle add one or several secant etc., at this moment can not have that convex tendon is not set on the connector of open slot, open slot on seamed edge by connector and another connector is snap close mutually, make two connectors become the version that to rotate after the connection, can guarantee that the connection between under normal circumstances electric-powered output shaft and the screw can not come off because of rotation like this.Obviously, in above-mentioned second kind of situation, be not fine having on the connector of open slot convex tendon to be set yet, and under the polygon situation, to such an extent as to when polygonal limit number abundant when circular, tight connection when keep rotating between two connectors also must be provided with convex tendon.
For the purpose of clear more; below when setting forth specific embodiments of the invention; the connector that will link to each other with screw is referred to as attachment plug; and will with electric-powered output shaft; for example the connector of motor output shaft connection is referred to as to connect cover for seat; and generally be to comprise closely that by the inner chamber that connects cover for seat attachment plug realizes the connection between the two, but this is the convenience in order to set forth, and can not regard limiting the scope of the invention as.
When the cross section of two connectors is non-circular and don't is provided with under the condition of convex tendon, connecting the back at two connectors transmits in the Motor torque process, connect the cover for seat enlarged-diameter because the effect of moment of torsion can make, as long as the motor torsional moment causes the difference that connects diameter before and after the cover for seat distortion less than one of following condition: 1, oval-shaped major axis and minor axis is poor; 2, two times polygon drift angle, sideline poor to the distance in the center of circle respectively; 3, circumference, secant poor to the distance in the center of circle respectively; The attachment plug that meets above-mentioned three kinds of situations just can not skidded in adapter sleeve, and connector can transmit Motor torque.
The size of power was can calculate by different structure shape and different materials to obtain needed value when screw broke away from from connector.So breakaway force and moment of torsion transmit between the two and can not interact.So just can reach existing enough torsion, suitable breakaway force is arranged again, just both can obtain enough power, can when bump takes place, effectively protect screw and motor again.
In a specific embodiment of the present invention, the typical structure that connects cover for seat for have open slot, the inner chamber cross section is circular drum organization; The typical structure of attachment plug is for being connected the closely drum type structure of parcel of cover for seat inner chamber.Fig. 2 is the typical structure explanation schematic diagram of above-mentioned circle drum connector in specific embodiment of the present invention, comprising connecting cover for seat 5, attachment plug 6; Connect cover for seat 5 and have elasticity, inner chamber is round drum type, on eight open slots are arranged, the pipe spreader 51 that connects cover for seat is connected with electric-powered output shaft; The base shape of attachment plug 5 is all circle drum, convex tendon 61 is set above, convex tendon quantity at least one in the attachment plug, mostly be most the quantity that Connection Block puts open slot, convex tendon is corresponding with the open slot position that connects cover for seat 5, convex tendon 61 width are less than the open slot width, and the front end of attachment plug 6 is an oar pad 62, and the fixing means of screw has multiple mode such as interference is fastening, gummed, screw and oar axle 63 fixing; When connection cover for seat 5 is connected with attachment plug 6, be that attachment plug 6 embeds within the Connection Block 5, the convex tendon 61 of attachment plug simultaneously embeds in the open slot 52, be at least axially slidably mated condition between the two, attachment plug 6 is locked in connect and rotates in the cover for seat 5 and the rotating torque of motor is passed to screw, but be subjected to external impacts at screw, connect in cover for seat 5 and attachment plug 6 detach procedures, convex tendon can slide by the opening part to open slot in open slot, finally causes the separation of two connectors.
Cross-sectional view during this circle drum connector connection status of Fig. 3 A, this profile have illustrated the attachment plug 6 that has oar pad 62 and oar axle 63 to be connected the state that cover for seat 5 locks.This circle drum connector of Fig. 3 B connects the cross-sectional view that cover for seat and attachment plug come off under external force, work as screw as can be seen and be subjected to external force collision, it is that fulcrum prizes moment loading that attachment plug 6 oar pads 62, oar axle 63 are subjected to the A point, and attachment plug attachment plug when 14 ° of deflections is deviate from from connect cover for seat 5.
Fig. 4 is the longitudinal sectional drawing of this typical circle drum connector, illustrated the key character of round drum type connector of this typical structure among the figure, promptly on longitudinal profile as can be seen, the cross section that connects cover for seat inner chamber and attachment plug in the connector is round, and the diameter B-B1 of middle cross section that connects cover for seat is greater than two end face diameter: the A-A1 and the C-C1 of attachment plug; The cross section maximum gauge is greater than bottom, oral area cross-sectional diameter in the Connection Block cover cydariform inner chamber.
Operation principle according to aforementioned this connector, the one of ordinary skilled in the art is easy to know, the cross section that connects cover for seat inner chamber and attachment plug is except that the circle drum type, can also be with oval, and the polygon drum type structure of N limit shape such as triangle, quadrangle, hexagon, octagon, N herein is three to infinitely-great number; As long as this cross section be centrosymmetric cross section all can, for example with the circle of one or two secant.When the cross section that connects cover for seat inner chamber and attachment plug is polygonal drum organization such as triangle, quadrangle, hexagon, octagon, the position of the open slot that Connection Block puts, can open on the corner, also can drive on the sideline, on the corner also can make round-corner transition.The shape difference of connector cross section, the difference that is provided with that can cause convex tendon, specifically, when the cross section circle of connector or the abundant polygon of limit number are gradually to circle, because electric-powered connecting mechanism for rotating transmits in the moment of torsion process, can skid between two connectors, the open slot that just needs therein must to be provided with on the connector one or more convex tendon and another connector at least this moment is corresponding, in other cases, can on the connector that does not have open slot, omit the setting of convex tendon.
Fig. 5 is that cross section is oval-shaped connector schematic diagram in specific embodiment of the present invention; Fig. 6 is that cross section is square connector schematic diagram in another specific embodiment of the present invention, the part 135 that its Connection Block is enclosed within four edges has fillet 134 parts of snap action, open slot 132 and claspless effect, and the circular arc 137 of attachment plug is connected the tight snap close of 135 parts in the cover for seat with right-angle side 136.Fig. 7 is that cross section of the present invention is circle and the specific embodiment schematic diagram with symmetrical line of cut; Fig. 8 is that cross section of the present invention is octagonal round drum type connector structural representation, and all there is fillet at eight angles of these connection cover for seat 5 inner chamber corners, attachment plug 6, in octagonal attachment plug convex tendon can be set.The structure of these shapes equally also has the propagation function of rotating torque between electric-powered output shaft and the screw and the screw screw defencive function when being impacted.
Therefore; those of ordinary skill in the art can not pay any creative work just knows distressed structures more of the present invention easily; as long as the cross section of connector is centrosymmetric cross section; then can be not limited to the above-mentioned cross sectional shape of having enumerated; can realize function of the present invention, thereby be included within the invention which is intended to be protected.
Fig. 9 is motor in specific embodiment of the present invention, typical circle drum connector, screw assembling decomposing schematic representation, comprise motor 1, connect cover for seat 5, attachment plug 6, screw 2, clearly illustrated typical circle drum connector and model electric-powered be the general structure and the installation step of the output shaft and the screw of motor.
In being connected of two connectors and screw, electric-powered output shaft, in the elaboration of this specification, generally the connector that is connected with motor is the connection cover for seat, and the connector that is connected with screw is attachment plug.In the aforementioned embodiment, can learn that typical circle drum connector is distributed with uniform open slot for connecting cover for seat, and corresponding convex tendon is arranged in the attachment plug, those skilled in the art is easy to associate two structural other form of distortion of connector.
Figure 10 is another circle drum connector specific embodiment structural representation of the present invention; wherein attachment plug 8 and axle sleeve 81 and motor output shaft socket; and connection cover for seat 9 and oar pad 92 are connected with the blade root of screw; the structure of its connector is just in time opposite with connection cover for seat, attachment plug structure front and back among Fig. 2, and its defencive function to screw is identical.
Also be a kind of typical version among Figure 11, wherein 7 for inner chamber has the connection cover for seat of the round drum type of convex tendon, and this Connection Block cover oral area diameter is less than inner chamber middle part diameter, and this connection cover for seat becomes rigid structure.And attachment plug 77 has open slot 76, makes attachment plug have elasticity, and its characteristics are to connect cover for seat and attachment plug is freed in the process, and attachment plug 77 external diameters are contraction distortions.Clashed at screw, connector is subjected to prizing the effect of moment, and attachment plug is freed outside connecting cover for seat, and when attachment plug 77 design maximum external diameters were deformed to less than Connection Block cover oral area diameter, attachment plug 77 just freed from connect cover for seat 7; Have in the scheme of inside convex tendon at connection cover for seat inner chamber, convex tendon cooperates requirement must meet following condition with size between the open slot: when the design maximum diameter place of attachment plug slid onto Connection Block cover oral area, the width dimensions of convex tendon should dwindle width dimensions after the distortion less than open slot; Can analyze attachment plug upper shed groove in dwindling deformation process, open slot oral area deflection is greater than the open slot bottom, therefore it is more reasonable open slot and convex tendon to be designed to trapezium structure: open slot oral area width is greater than the open slot bottom, and at the convex tendon width of the cover for seat oral area that is rigidly connected less than being positioned at the size that connects the cover for seat bottom.
In the circle drum connector of the attachment plug 77 with open slot 76, the open slot 76 oral area width of attachment plug are trapezoidal greater than its bottom width; And on the inner chamber 74 of connection cover for seat 7 convex tendon 72 is set, and the shape of this convex tendon also is trapezoidal, convex tendon 72 width of Connection Block cover oral area are less than the width of this convex tendon bottom; Attachment plug 77 is prized by moment and skids off connection cover for seat 7, the middle part of attachment plug 77 diameter maximum progressively slippage to the process of Connection Block cover oral area, it is the process that the external diameter of attachment plug 77 is contracted to maximum variable gradually, former trapezoid-shaped openings well width fades to minimum, at this moment, trapezoidal convex tendon contract to the open slot planted agent of minimum widith be axial mated condition slidably, like this, attachment plug 77 could be fixedly coupled in the cover for seat 7 from bore and free.
The scheme that also have drum type structure stacking pattern on short transverse identical with aforementioned principles.
The drum type connector structural representation that has half height of stack in specific embodiment of Figure 12 the present invention, the cydariform 106 of attachment plug among the figure is the drum organization of a height, and attachment plug cydariform 107 is drum organizations of half height, involutory with Connection Block cover cydariform 108 among the figure, half drum type structure height part of attachment plug 107 only has effect to connection cover for seat and the attachment plug stability when locking among the figure, but the lock function of this connection cover for seat is not had synergistic effect.
Figure 13 is the structural representation that has the identical drum type overlaying structure connector of two diameters in specific embodiment of the present invention.Figure 14 is the longitudinal profile schematic diagram of the identical drum type overlaying structure connector of these two diameters, as Figure 13, shown in Figure 14, with a cross section is that larger-diameter cydariform 127 is the stack of twin drum type structure on short transverse than minor diameter cydariform 126 with another cross section, and R1 is to be that the center of circle is the circular arc line of radius to major diameter cydariform cover for seat oral area with A point among Figure 14; R2 is be the center of circle to the maximum gauge place of minor diameter drum type 126 with A point among Figure 14 is the circular arc line of radius.This superimposed type organization plan, because R2 is less than R1, when screw is impacted power, plug is that fulcrum prizes under the moment loading with the point of arrow A indication, make attachment plug separate the Connection Block cover, because R2 is less than R1, thereby attachment plug can disposablely free from connecting in the block set, and its basic function is the same with scheme shown in the aforementioned schematic diagram.
The bench model wind stick great majority of motor power are plastic injection-moulded technology manufacturing, have the connector of screw defencive function, can make with the screw integral molded plastic, form a kind of new type propeller product.What illustrate among Figure 15 is screw 21 and the mechanism of attachment plug 26 integral molded plastic moulding, Figure 16 be signal screw 22 be connected cover for seat 25 integral molded plastic molding structures.
Figure 17 is the assembling decomposition texture schematic diagram that comprises the electric-powered model airplane aircraft power system of screw defencive function connector 5,6 and screw 2, radome fairing 7 in specific embodiment of the present invention.
Motor and the introduction of propeller connector test situation with screw defencive function: shape such as the combination of Fig. 2 connector; master data is as follows: connecting the cover for seat maximum inner diameter is 10mm; when screw is hit; the required moment that attachment plug is freed from the connection cover for seat is the 550--600 gram per centimeter, and the axial minimum pulling-out force of attachment plug is 1800 grams.Test weighs 65 grams, span 500mm, preposition airscrew diameter 107mm at a machine, and motor is to carry out on the N50 powered remote control model of an airplane.The model of an airplane is climbing, is taking a sudden turn, flatly flying, descends rapidly in the various flare maneuvers of degradation; connector with screw defencive function can both guarantee the screw operate as normal; and no matter on still being smooth cement road, rugged meadow lands; in case screw grazing cement flooring or meadow, branch; screw just separates with motor and has broken away from; effectively protected screw, also made the motor and the model of an airplane exempt from damage.And under same model and the flying field condition, screw and model of an airplane power motor output shaft are directly fixing, model of an airplane screw grazing cement pavement or tripped by the meadow or clashed into during landing by branch, not only screw can flexural deformation or is split off, and often causes motor output shaft crooked and scrapped.
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (10)
1. propeller connector of electric-powered model airplane, be used for connecting electric-powered output shaft and screw at electric-powered model airplane with screw, it is characterized in that comprising two connectors, the electric-powered output shaft of one of them connector link model, and another connector is used for the screw of link model, a connector in described two connectors is the elastic component with open slot, described two connectors connect on same axial line and can rotate together, but the two can separate easily when being subjected to external impacts.
2. propeller connector of electric-powered model airplane as claimed in claim 1, the cavity shape that it is characterized in that a connector in described two connectors is a drum organization, the maximum gauge of cross section circumscribed circle is greater than bottom, the external diameter of a circle of oral area cross section in the cydariform inner chamber, and another one connector profile can closely be wrapped up by this connector inner chamber.
3. propeller connector of electric-powered model airplane as claimed in claim 2, it is characterized in that a connector in described two connectors has the convex tendon of the open slot on corresponding another connector, the quantity of described convex tendon is at least one mostly to be the quantity of another connector upper shed groove most; When two connectors connected, described convex tendon embedded and makes two connectors can be located by connecting and can not relatively rotate in the described open slot, finishes the moment of torsion transmission between electric-powered output shaft and the screw; Be axial mated condition slidably between described convex tendon and the open slot, meet with in the external force detach procedures that described convex tendon slides and comes off to the opening part of open slot in open slot at two connectors.
4. propeller connector of electric-powered model airplane as claimed in claim 3, the twin drum shape structure of cavity shape that it is characterized in that a connector in described two connectors for linking to each other, the inner chamber of each drum organization be middle cross section circumscribed circle diameter greater than bottom, the external diameter of a circle of oral area cross section, and another one connector profile is can be by the tight twin drum shape structure of parcel of this connector inner chamber.
5. propeller connector of electric-powered model airplane as claimed in claim 4, the width of opening part that it is characterized in that described open slot is more than or equal to the width of the other end of open slot, and the shape of convex tendon and open slot coincide.
6. as claim 2,3, the described propeller connector of electric-powered model airplane of 4 or 5 arbitrary claims, the cross section that it is characterized in that described two connectors is centrosymmetric cross section.
7. propeller connector of electric-powered model airplane as claimed in claim 6, the cross section that it is characterized in that described two connectors are circle or ellipse or polygon.
8. propeller connector of electric-powered model airplane as claimed in claim 7, when it is characterized in that described cross section is polygon, the open slot position of described connector is on the corner or on the sideline.
9. as claim 1,2,3,4,5, the described propeller connector of electric-powered model airplane of 7 or 8 arbitrary claims, it is characterized in that described connector that is connected with screw and screw integral molded plastic are shaped.
10. propeller connector of electric-powered model airplane as claimed in claim 9 is characterized in that described model is that motor is the model airplane aircraft of power.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101766229A CN101653661B (en) | 2009-09-24 | 2009-09-24 | Propeller connector of electric-powered model airplane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101766229A CN101653661B (en) | 2009-09-24 | 2009-09-24 | Propeller connector of electric-powered model airplane |
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| CN101653661A CN101653661A (en) | 2010-02-24 |
| CN101653661B true CN101653661B (en) | 2011-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8430709B1 (en) | 2012-07-30 | 2013-04-30 | Silverlit Limited | Detachable propeller for flying toys |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201572529U (en) * | 2009-09-24 | 2010-09-08 | 上海九鹰电子科技有限公司 | Propeller connecting piece of electrical power model airplane |
| CN101972548B (en) * | 2010-09-09 | 2012-07-04 | 倪康汉 | Convenient assembling and disassembling axis structure of coaxial double-paddle reversal model helicopter |
| CN106178530A (en) * | 2015-04-29 | 2016-12-07 | 张斌 | Free flight model airplane |
| NO343097B1 (en) | 2017-03-14 | 2018-11-05 | FLIR Unmanned Aerial Systems AS | Quick Release Rotor Attachment |
| CN109395411B (en) * | 2018-11-14 | 2019-08-27 | 郑岚心 | A kind of implementation method for preventing blade from fractureing when model plane low-latitude flying |
-
2009
- 2009-09-24 CN CN2009101766229A patent/CN101653661B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8430709B1 (en) | 2012-07-30 | 2013-04-30 | Silverlit Limited | Detachable propeller for flying toys |
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| CN101653661A (en) | 2010-02-24 |
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