U.S. patent application number 14/902387 was filed with the patent office on 2017-01-05 for prompt drop device for remote control model airplane and remote control model airplane.
The applicant listed for this patent is SHANGHAI NINE EAGLES ELECTRONIC TECHNOLOGY CO., LTD. Invention is credited to Cheng HUANG, Chaolin ZHAN.
Application Number | 20170001124 14/902387 |
Document ID | / |
Family ID | 49698064 |
Filed Date | 2017-01-05 |
United States Patent
Application |
20170001124 |
Kind Code |
A1 |
HUANG; Cheng ; et
al. |
January 5, 2017 |
PROMPT DROP DEVICE FOR REMOTE CONTROL MODEL AIRPLANE AND REMOTE
CONTROL MODEL AIRPLANE
Abstract
A prompt drop device for a remote control model airplane
comprises an airplane body (1) and a horizontal tail (3). A support
(2) disposed on the airplane body (1) is used for supporting the
front end of the horizontal tail (3). The front end (8) of the
horizontal tail (3) is rotated under the binding of the support
(2). A driving device is connected with the horizontal tail (3) and
is used for lifting the rear end of the horizontal tail (3). A
remote control model airplane comprising the prompt drop device is
provided with the movable horizontal tail (3) and controls the
angle of the horizontal tail (3) during landing, so that vertical
descending is realized, and damage during landing is avoided.
Inventors: |
HUANG; Cheng; (Shanghai,
CN) ; ZHAN; Chaolin; (Shanghai, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SHANGHAI NINE EAGLES ELECTRONIC TECHNOLOGY CO., LTD |
Shanghai |
|
CN |
|
|
Family ID: |
49698064 |
Appl. No.: |
14/902387 |
Filed: |
April 18, 2014 |
PCT Filed: |
April 18, 2014 |
PCT NO: |
PCT/CN2014/075678 |
371 Date: |
September 20, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63H 30/04 20130101;
A63H 30/00 20130101; A63H 27/02 20130101; A63H 29/18 20130101 |
International
Class: |
A63H 27/00 20060101
A63H027/00; A63H 30/00 20060101 A63H030/00; A63H 29/18 20060101
A63H029/18 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 2, 2013 |
CN |
201320390553.3 |
Claims
1. A prompt drop device for a remote control model airplane,
comprising an airplane body and a horizontal tail, wherein a
support and a driving device are disposed on the airplane body, the
support is used for supporting the front end of the horizontal
tail, the front end of the horizontal tail is rotated under the
binding of the support, and the driving device is connected with
the horizontal tail and is used for lifting the rear end of the
horizontal tail.
2. The prompt drop device for the remote control model airplane
according to claim 1, further comprising an operating mechanism and
a locking pin both of which are disposed on the airplane body,
wherein the locking pinstretches out or retracts back under the
control of the operating mechanism, and the locking pin is inserted
to a fixing portion of the horizontal tail under the condition that
the locking pin is at a stretching state to lock the horizontal
tail at a basically horizontal state, and the driving device is
used for lifting the rear end of the horizontal tail under the
condition that the fixing pin retracts back.
3. The prompt drop device for the remote control model airplane
according to claim 1, wherein the driving device comprises a
tensile elastic component which is used for connecting a fulcrum
disposed on the horizontal tail with the airplane body.
4. The prompt drop device for the remote control model airplane
according to claim 3, wherein the tensile elastic component is a
rubber band.
5. The prompt drop device for the remote control model airplane
according to claim 3, wherein the tensile elastic component is a
spring.
6. The prompt drop device for the remote control model airplane
according to claim 1, wherein the driving device is a servo
mechanism which is connected to the horizontal tail and drives the
horizontal tail to rotate.
7. The prompt drop device for the remote control model airplane
according to claim 1, further comprising an elevator and a steering
engine for manipulating the elevator, the elevator is connected
with the horizontal tail, and the steering engine is mounted on the
horizontal tail and rotates along with the horizontal tail.
8. (canceled)
Description
TECHNICAL FIELD
[0001] The present utility model relates to the field of remote
control airplane models, in particular to a prompt drop device for
a remote control model airplane and the remote control model
airplane.
BACKGROUND ART
[0002] Remote control models (including aircraft models, car models
and ship models) are being loved by more and more users at present,
however, there has a certain difficulty in terms of remote control
of the airplane models, and if the user has no enough experience to
control the model to move in accordance with a reasonable manner,
it will likely lead to damage of the models.
[0003] As to a model airplane, it is greatly difficult to operate
the model to land. Because the flight height of the model is lower
and lower during landing, an operator needs to correct in time
according to the velocity, the height as well as wind speed and
direction, or else it will likely lead that the model crashes to
obstacles, flies out of a site or collides with the ground roughly.
It is very easy for the model to have an accident during landing
for newbies, and even for an operator having certain experiences,
there has great difficulty in landing of the model as well in case
of narrow regional space where the airplane model needs to land,
and more obstacles.
[0004] An effective solution has not been proposed yet at present
for the problems that the model is greatly difficult to be
controlled remotely and easily damaged in related technologies.
SUMMARY OF THE INVENTION
[0005] The present utility model proposes a prompt drop device for
a remote control model airplane and the remote control model
airplane regarding the problems that the model is greatly difficult
to be controlled remotely and easily damaged in related
technologies, and the remote control model airplane can be landed
to the ground in a nearly vertical descending trajectory in need of
landing, so that the landing difficulty is reduced, the success
rate of landing is improved, and damage of the airplane model owing
to landing is avoided.
[0006] The technical solution of the present utility model is
emboded by the follow technical solution:
[0007] According to the present utility model, a prompt drop device
for a remote control model airplane is provided, comprising an
airplane body and a horizontal tail. Wherein a support and a
driving device are disposed on the airplane body, wherein the
support is used for supporting the front end of the horizontal
tail, the front end of the horizontal tail is rotated under the
binding of the support, and in addition, the driving device is
connected to the horizontal tail and used for lifting the rear end
of the horizontal tail.
[0008] On the one hand, the device can further comprise an
operating mechanism and a locking pin both of which are disposed on
the airplane body, wherein the locking pin stretches out or
retracts back under the control of the operating mechanism, and the
locking pin is inserted to a fixing portion of the horizontal tail
under the condition that the locking pin is at a stretching state
to lock the horizontal tail at a basically horizontal state, and
the driving device is used for lifting the rear end of the
horizontal tail under the condition that the fixing pin retracts
back.
[0009] Additionally, the driving device comprises a tensile elastic
component which is used for connecting a fulcrum disposed on the
horizontal tail and the airplane body. Optionally, the tensile
elastic component is a rubber band, and in addition, the tensile
elastic component may be a spring.
[0010] On the one hand, the driving device may be a servo mechanism
which is connected to the horizontal tail 3 and drives the front
end of the horizontal tail 3 to rotate under the binding of the
support.
[0011] In addition, the device can further comprise an elevator and
a steering engine for manipulating the elevator, wherein the
elevator is connected with the horizontal tail, and the steering
engine is mounted on the horizontal tail and rotates together with
the horizontal tail.
[0012] According to the present utility model, a remote control
model airplane is also provided, and the remote control model
airplane comprises the prompt drop device for the remote control
model airplane.
[0013] According to the present utility model, the movable
horizontal tail is configured, so that the angle of the horizontal
tail can be controlled in need of landing and the model can be
landed in a nearly vertical descending trajectory, so that the
falling difficulty is reduced, the success rate of landing is
improved, and damage of the airplane model owing to landing is
avoided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Accompanying drawings that need to be used in description of
the embodiments will be briefly introduced below in order to
illustrate the embodiments of the present utility model and the
technical solution of the existing technology clearly, and it is
apparent for those common skilled in the art that the accompany
drawings described as below are just some embodiments of the
present utility model and other accompany drawings can be acquired
on the basis of those accompany drawings on the premise of not
paying creative work.
[0015] FIG. 1 and FIG. 2 are structural schematic diagrams of the
tail portion of the flight model airplane according to the first
embodiment of the present utility model;
[0016] FIG. 3 is a schematic diagram when the rear end of the
horizontal tail of the flight model airplane according to the first
embodiment of the present utility model is lifted;
[0017] FIG. 4 is a structural diagram when the tail portion of the
flight model airplane according to the first embodiment of the
present utility model is not equipped with the horizontal tail;
[0018] FIG. 5 is a structural schematic diagram of the horizontal
tail according to the first embodiment of the present utility
model;
[0019] FIG. 6 is a structural schematic diagram of the tail portion
of the flight model airplane according to the second embodiment of
the present utility model;
[0020] FIG. 7 is a schematic diagram when the horizontal tail of
the flight model airplane according to the second embodiment of the
present utility model is lifted;
[0021] FIG. 8 and FIG. 9 are structural schematic diagrams of the
tail portion of the flight model airplane according to the third
embodiment of the present utility model;
[0022] FIG. 10 is a structural schematic diagram when the
horizontal tail on the tail portion of the flight model airplane
according to the third embodiment of the present utility model is
separated from the support;
[0023] FIG. 11 is a structural schematic diagram of the horizontal
tail according to the third embodiment of the present utility
model;
[0024] FIG. 12 is a structural schematic diagram of the support
according to the third embodiment of the present utility model.
[0025] FIG. 13 is a structural schematic diagram after the
horizontal tail on the tail portion of the flight model airplane
according to the third embodiment of the present utility model is
lifted.
DETAILED DESCRIPTIONS OF THE PREFERRED EMBODIMENTS
[0026] The technical solution in the embodiments of the present
utility model will be described clearly and completely below in
conjunction with the attached drawings in the embodiments of the
present utility model. Obviously, the described embodiments are
just a part of embodiments of the present utility model, rather
than all of the embodiments. On the basis of the embodiments in the
present utility model, all the other embodiments, made by common
technical skilled in the art, fall into the protection scope of the
present utility model.
[0027] According to the present utility model, a prompt drop device
for a remote control model airplane is provided. In the following
description, components less associated with the present utility
model are omitted, and just are related components, such as the
horizontal tail of the prompt drop device of the remote control
model airplane emphatically described.
[0028] As shown in FIG. 1, the prompt drop device for the remote
control model airplane according to the present utility model
comprises an airplane body 1 and a horizontal tail 3, wherein the
front end 8 of the horizontal tail 3 is fixed on the airplane body
1, for example, is fixed through a support 2 which plays a role of
supporting the horizontal tail 3, and in addition, the front end 8
(the shape of the front end 8 of the horizontal tail in the first
embodiment is as shown in FIG. 5) of the horizontal tail 3 is
rotated under the binding of the support 2.
[0029] By reference to FIG. 1 to FIG. 5, the prompt drop for the
remote control model airplane according to the first embodiment of
the present utility model further comprises an operating mechanism
7, a locking pin 5 (the locking pin 5 is as shown in FIG. 2 and may
be a locking needle), a fixing portion 6 and a driving device,
wherein the operating mechanism 7 and the locking pin 5 are
disposed on the airplane body 1, the locking pin 5 stretches out or
retracts back under the control of the operating mechanism 7, and
the locking pin 5 is inserted into the fixing portion 6 of the
horizontal tail 3 (the condition when the locking pin 5 is inserted
into the fixing portion 6 is as shown in FIG. 2) under the
condition that the locking pin 5 is at a stretching state to fix
the horizontal tail 3 to be at an approximately horizontal
state.
[0030] The driving device is used for lifting the rear end of the
horizontal tail 3 under the condition that the fixing pin 5
retracts back, wherein by reference to FIG. 1, the driving device
is disposed on the airplane body 1 and may be a tensile elastic
component 4 which is used for connecting a fulcrum 9 (the fulcrum 9
which can be of other shapes such as a ring, except for a hook is
as shown in FIG. 1 and FIG. 5) disposed on the horizontal tail 3
with the airplane body 1, one end of the tensile elastic component
4 is fixed on one side of the airplane body 1, and the other end of
the tensile elastic component 4 penetrates through the fulcrum 9
and is fixed on the other side of the airplane body 1. Optionally,
the tensile elastic component 4 is a rubber band, and can also be a
tensile spring.
[0031] As shown in FIG. 3, the tensile elastic component 4 can
apply a tensile force towards the airplane body 1 to the fulcrum 9,
and therefore the rear end of the horizontal tail 3 will upwarp
under the action of the tensile force. When the remote control
model airplane with the prompt drop device flies, the upwarping
horizontal tail can effectively reduce the advancing velocity of
the remote control model airplane and ensure that the model can be
landed in a nearly vertical trajectory, thus being conductive to
realizing safe landing and preventing the model from being
crashed.
[0032] As shown in FIG. 5, an arc-shaped surface 8 is provided on a
position where the front end of the horizontal tail 3 is in contact
with the support 2, and in addition, in order to limit a horizontal
position of the horizontal tail 3, the horizontal tail 3 can be
provided with a groove for fixing with the support 2. In addition,
as shown in FIG. 5, the fixing portion 6 is a lock catch (shaped as
a lantern ring) which droops towards the lower side of the
horizontal tail 3 and is used for accumulating the locking pin
5.
[0033] Therefore, when the remote control model airplane, equipped
with the prompt drop device, provided by the present utility model
flies normally, the horizontal tail 3 is horizontal basically (the
angle difference between the horizontal tail and the horizontal
surface is relatively small (for example, the angle difference with
the horizontal surface is 2 degrees), and a proper mounting angle
difference (the angle difference is not too large generally, and
for example, may be about 2 degrees) exists between the horizontal
tail 3 and each wing), so that the lift force, the stability and
the maneuverability of the model airplane can be ensured. If the
mounting angle difference is allowed to be far beyond this range,
for example, the horizontal tail becomes -30 degrees on the
original position, so the mounting angle difference between the
wing and the horizontal tail is far beyond the normal range, and
thus the aerodynamic state of the whole model is completely
changed, the wings fail to generate a lift force, and the model
vertically descends from the original flying forwards. Therefore
the purpose of prompt drop is achieved.
[0034] Therefore, the horizontal tail (together with an elevator)
has two working states, namely a normal flying state under which
the mounting angle of the horizontal tail is 0 degree basically,
the mounting angle of the wing is about 2 degrees generally, and
the difference between the horizontal tail and the wing is about 2
degrees; and a prompt state under which the mounting angle of the
horizontal tail 3 suddenly becomes dozens of degrees minus (for
example, may be about -35 degrees, -40 degrees), the mounting angle
difference between the horizontal tail and the wing is very large,
and the whole airplane enters a prompt drop state. In order to
realize said requirements, a support 2 is provided on the airplane
1 and used for supporting the horizontal tail 3 and is allowed to
be rotated to change the mounting angle. After the horizontal tail
3 is mounted on the support, the airplane body 1 is tensioned by
means of an elastic wire 4, and the horizontal tail 3 undergoes an
upward force under the action of the elastic wire 4 and upwarps if
case of no binding to present a large minus mounting angle. A
locking needle 5 extends out from the airplane body 1 during normal
flight and is used for locking the fixing portion (a lock catch) 6
of the horizontal tail, so that the horizontal tail 3 is kept at a
horizontal state; and once the locking needle 5 retracts back to
the airplane body 1, the fixing portion (the lock catch) 6 of the
horizontal tail 3 loses binding, and the horizontal tail 3 upwarps
fast under the action of the elastic wire to enter a prompt drop
state.
[0035] Therefore, when the remote control model airplane equipped
with the prompt drop device flies normally, the locking pin (the
locking needle) 5 is at a stretching state and is inserted into the
fixing portion (the lock catch) 6 to fix the horizontal tail at a
horizontal state. When the prompt drop device for the remote
control model airplane receives a prompt drop instruction, the
operating mechanism 7 will retract the locking pin back in response
to this instruction, and because the front end of the horizontal
tail 3 is limited in the support 2 and can be rotated, the fixing
portion (the lock catch) 6 loses the binding of the locking pin 5
under the tensile force action of the tensile elastic component 4,
the rear end of the horizontal tail 3 will be lift, and the remote
control model airplane equipped with the prompt drop device enters
a prompt drop state.
[0036] It should be noticed that the contents described above are
just the specific embodiment of the present utility model, and the
prompt drop device of the remote control model airplane of the
present utility model is not limited to the structure as shown in
FIGS. For example, the arc-shaped surface 8 on the front end of the
horizontal tail 3 can be realized by a circular rod or a circular
pipe, and can also be a ridge having a very small circular arc
radius. The fixing portion (the lock catch) 6 can also be of other
shapes, except for a lantern ring as long as it can be locked and
released. In an embodiment (not shown), the driving device may be a
compression spring, wherein one end of the compression ring is
fixed to the airplane body 1 and the other end of the compression
spring is fixed to the rear end of the horizontal tail 3; and the
compression spring can apply an elastic force to jack the rear end
of the horizontal tail 3 up under the condition that the locking
pin 5 retracts back. Furthermore, the tensile elastic component 4
can be fixed with the airplane body 1 and the horizontal tail 3 in
other ways, and thus playing a role of pulling the horizontal tail
to lift the rear end.
[0037] It is should be noticed that the elevator and a steering
engine which are connected with the horizontal tail are not shown
in the first embodiment, and actually, in the first embodiment, the
horizontal tail should be connected with the elevator as well, and
the steering engine should be also mounted on the remote control
model airplane. The connection condition of the elevator, the
steering engine and the horizontal tail is as shown in the second
embodiment and the third embodiment to be described.
[0038] According to the second embodiment of the present utility
model, a driving device 14 as a servo mechanism can apply a moment
to the front end of the horizontal tail 3 (as shown in FIG. 6 and
FIG. 7), the moment is applied to a protruding portion 10 below the
front end 8 of the horizontal tail 3 (as shown in FIG. 7) and can
be integrally formed with the front end of the horizontal tail 3,
and therefore the rear end of the protruding portion can be lifted
by rotating the horizontal tail 3. Therefore, under the driving of
the driving device 14, the horizontal tail 3 can remain multiple
mounting angles, and thus two, even more manipulation modes and
prompt drop modes can be realized. In this embodiment, the locking
pin 5, the lock catch 6, the fulcrum 9 and the like can be omitted.
In this embodiment, the mounting angle of the horizontal tail under
a horizontal state can meet said requirements as well.
[0039] In the third embodiment according to the present utility
model, a horizontal tail 3, a locking pin 5, a fixing portion 6, an
operating mechanism 7 and the airplane body 1 are similar to the
corresponding structures in the first embodiment. As shown in FIG.
8 and FIG. 9, differing from the first embodiment and the second
embodiment, a tensile spring 4 is adopted to provide the tensile
force in this embodiment, wherein one end of the spring 4 is fixed
on the airplane body 1, and the other end of the spring 4 is fixed
to a fulcrum 9 of the horizontal tail. In addition, an elevator 12
and a steering engine 11 are further shown in this embodiment. By
reference to FIG. 8 and FIG. 9, the elevator 12 is connected to the
rear end of the horizontal tail 3 and can form multiple angles with
the horizontal tail 3 under the control of the steering engine 11,
and in addition, the steering engine 11 for manipulating the
elevator is mounted on the horizontal tail 3 and moves along with
the horizontal tail 3. Additionally, the fixing portion 6 is
positioned on the rear end of the horizontal tail 3 and is present
as a drooping porous plate.
[0040] By reference to FIG. 10 and FIG. 11, a portion where the
horizontal tail 3 and the support 2 in the prompt drop device for
the remote control model airplane according to the third embodiment
of the present utility model contact is a circular pipe, so as to
facilitate the horizontal tail 3 to rotate under the binding of the
support 2.
[0041] By reference to FIG. 12, a part of the airplane body 1 is
shown, wherein the airplane body 1 near the support 2 is
emphatically shown in FIG. 12. The cross section of the support 2
takes the shape of a circular arc an opening of which is used for
accommodating the front end (the circular pipe 8) of the horizontal
tail 3 (as shown in FIG. 12), and in addition, the airplane body 1
is equipped with an annular bulge 13 for fixing a spring 4.
[0042] FIG. 13 is the schematic diagram when the rear end of the
horizontal tail 3 of the prompt drop device of the remote control
model airplane according to the third embodiment of the present
utility model is lifted. As shown in FIG. 13, the locking pin 5
retracts back, the fixing (pin) portion (the lock catch) 6 is
unlocked, and the elevator 12 and the steering engine 11 are lifted
as well under the condition that the rear end of the horizontal
tail 3 is lifted under the tensile force action of the tensile
spring 4 on the rear end of the horizontal tail 3.
[0043] It should be noticed that the contents described above are
just specific embodiments of the present utility model, the prompt
drop device for the remote control model airplane according to the
present utility model also has the capability of locking the
horizontal tail to a horizontal state and then unlocking in other
ways, and in addition, the rear end of the horizontal tail can be
lifted in other ways. There is no need to enumerate here.
[0044] From the above, According to the prompt drop device for the
remote control model airplane of the present utility model, a very
large minus mounting angle of the horizontal tail is generated in
need of prompt drop by utilizing the angle change of the horizontal
tail, so that the aerodynamic performance of the whole model
changes obviously, namely both wings for generating the lift force
and the tail for keeping balanced originally generate resistance to
enable the model to descend in a nearly vertical manner at a steady
state, so that complex and accurate judgments, needing to be made
by an operator, when the remote control model airplane is landed,
are avoided and no broad landing site is needed, and therefore the
landing difficulty is reduced and the efficiency in the landing
process is also improved.
[0045] The embodiments as stated above are just preferred
embodiments of the present utility model but do not limit the
present utility model. All amendments, equivalent substitutions,
improvements and the like, without departing from the spirit and
the principle of the present utility model, should fall into the
protection scope of the present utility model.
* * * * *