Assembling structure for landing gear of a model airplane

Details Assembling structure for landing gear of a model airplane Assembling structure for landing gear of a model airplane

1999-09-13

2001-02-06

Muir, D. Neal (Department: 3712)

Amusement devices: toys

Aerodynamically supported or retarded

C446S055000, C024S596100

Reexamination Certificate

active

06183331

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to an assembling structure for landing gear of a model airplane, which permits the model airplane body and the landing gear to be quickly assembled and disassembled.
FIG. 4
shows a conventional fixing structure for landing gear of a model airplane. Self-tightening screws
91
are passed through the fixing holes
921
of the landing gear
92
and screwed into the base board
90
of the airplane body so as to fix the landing gear
92
on the base board
90
.
The base board
90
is made of relatively light wooden material with low density. Therefore, it is unsuitable for a user to repeatedly tighten the base board
90
with the self-tightening screws
91
. Otherwise, the thread will be damaged and it will be impossible to further tighten the self-tightening screws
91
. Therefore, it is unsuitable to disassemble the landing gear
92
once it is fixed by the self-tightening screws
91
. This leads to inconvenience in storage and carriage of the model airplane.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide an assembling structure for landing gear of a model airplane, in which the landing gear is fixed on a landing gear fixing seat by fixing pins passing through the fixing seat. The cap section of the fixing pin can be rotated by 90 degrees to engage in a channel of a fixing section of the landing gear. Under such circumstance, the landing gear is disengaged from the cap section of the fixing pin and can be quickly disassembled from the fixing seat and separated from the airplane body. Accordingly, the model airplane body and the landing gear can be quickly assembled and disassembled to facilitate carriage and storage of the model airplane.
According to the above object, the assembling structure for landing gear of a model airplane of the present invention includes:
a hollow airplane body having a base board formed with a recess;
a landing gear fixing seat mounted in the recess of the airplanebody and having a left and a right circular through holes; and
a landing gear fixed on the fixing seat by fixing pins, the landing gear having a fixing section formed with two elongated fixing holes corresponding to the through holes of the fixing seat, a bottom face of the fixing section being formed with a channel perpendicular to each fixing hole.
One end of the fixing pin is formed with a cap section having a profile corresponding to that of the fixing hole. The cap section extends out of the fixing hole. A top face of the cap section is formed with a rib having a profile corresponding to that of the channel. One end of the fixing pin opposite to the cap section is formed with an engaging section. The end of the fixing pin with the engaging section is passed through the through hole of the fixing seat. A resilient member is fitted between the engaging section and a top face of the fixing seat. An upper and a lower edges of the resilient member respectively abut against the engaging section of the fixing pin and the top face of the fixing seat.
The present invention can be best understood through the following description and accompanying drawings wherein:


REFERENCES:
patent: 1428916 (1922-09-01), Snideman
patent: 2347689 (1944-05-01), Johnson
patent: 2401459 (1946-06-01), Cavanaugh
patent: 2643126 (1953-06-01), Kelly
patent: 2956029 (1934-04-01), Holmes
patent: 3422567 (1969-01-01), Farb et al.
patent: 4801232 (1989-01-01), Hempel
patent: 5078638 (1992-01-01), Molina
patent: 5361925 (1994-11-01), Wecke et al.

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