Assembling structure for tail wing of a model airplane

Details Assembling structure for tail wing of a model airplane Assembling structure for tail wing of a model airplane

1999-09-13

2001-02-13

Muir, D. Neal (Department: 3712)

Amusement devices: toys

Aerodynamically supported or retarded

C446S088000

Reexamination Certificate

active

06186854

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to an assembling structure for tail wing of a model airplane, which permits the tail wing to be quickly firmly assembled or disassembled from the airplane body for easy carnage or storage.
FIG. 4
shows a conventional assembling structure for tail wing of a model airplane. The airplane body
80
has a horizontal connecting face
81
at tail section and the bottom of the vertical tail fin
82
is formed with a notch
821
. An engaging block
822
is adhered to the notch
821
for inserting a U-shaped fixing thread rod
83
at the bottom of the tail fin
82
. The horizontal tail wing
84
and the connecting face
81
of the airplane body
80
are formed with through holes
841
,
811
corresponding to the U-shaped thread rod
83
. Therefore, the U-shaped thread rod
83
can be passed through the tail wing
84
and the connecting face
81
of the airplane body
80
and locked by a nut
85
and a washer
86
from the bottom face of the airplane body
80
so as to fix and assemble the airplane body
80
, vertical tail fin
82
and horizontal tail wing
84
.
The model airplane is made of light wood material with low density and is relatively soft. The tail fin
82
and the tail wing
84
serve to control the left and right turning and ascending and descending of the entire airplane and stabilize the flight. The tail fin
82
and the tail wing
84
will bear considerably great external force in flying. Therefore, under the continuous pressure of external force, the hard U-shaped thread rod
83
will expand the soft hole walls of the holes
841
,
811
. Under such circumstance, the tail fin
82
and the tail wing
84
can be hardly firmly fixed. This will affect the stability in flight of the model airplane or even lose control of the model airplane.
When adhering the front and rear connecting faces of the engaging block
822
to the notch
821
of the bottom of the tail fin
82
, it is necessary at the same time insert the U-shaped thread rod
83
. Moreover, the left and right sides of the engaging block
822
are only covered by the skin
823
of the tail fin
82
so that the adhesion area of the engaging block
822
to the notch
821
is reduced. After continuously suffering considerably great external force, the tail fin
82
may be loosened from the engaging block
822
to affect the safety of the model airplane in flying or even lead to crash of the model airplane.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide an assembling structure for tail wing of a model airplane. The bottom face of the vertical tail fin is disposed with two projecting fixing rods. The horizontal tail wing and the connecting face of the tail of the airplane body are formed with through holes corresponding to the fixing rods of the tail fin. A sleeve is fitted on inner wall of each through hole. The fixing rods of the tail fin can be firmly passed through the tail wing and airplane body and locked by screws. Therefore, the tail wing of the model airplane can be quickly firmly assembled or disassembled from the airplane body for easy carriage or storage.
According to the above object, in the assembling structure for tail wing of a model airplane of the present invention, the airplane body has a horizontal connecting face at tail section for connecting with the horizontal tail wing and vertical tail fin.
A bottom face of the vertical tail fin is formed with two rectangular sockets for the rectangular sections of two fixing rods to insert therein. An upper section of the fixing rod is a rectangular section. A lower section of the fixing rod is a cylindrical section. A bottom end of the fixing rod is formed with an axial hole. A screw fitted with a washer is screwed and tightened from the bottom face of the airplane body in the hole.
A center of the horizontal tail wing is formed with two through holes corresponding to the fixing rods of the tail fin. A sleeve is fitted on inner wall of each through hole.
The connecting face of the tail of the airplane body is formed with two through holes corresponding to the fixing rods of the tail fin. A sleeve is fitted on inner wall of each through hole.
The present invention can be best understood through the following description and accompanying drawings wherein:


REFERENCES:
patent: 2281792 (1942-05-01), Ott
patent: 2303632 (1942-12-01), Grant
patent: 4270301 (1981-06-01), Meek
patent: 5035382 (1991-07-01), Lissaman et al.
patent: 5064145 (1991-11-01), Wagener

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