Folding structure of an exerciser

Details Folding structure of an exerciser Folding structure of an exerciser

2000-06-22

2001-05-22

Crow, Stephen R. (Department: 3764)

Exercise devices

Involving user translation or physical simulation thereof

Treadmill for foot travel

Reexamination Certificate

active

06234937

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a folding structure of an exerciser including a frame body and a support stand. The support stand is disposed with a large arch plate and a small arch plate defining an arch rail for an arch projecting block of the frame body to slidably fit in the arch rail.
FIGS. 5 and 6
show a conventional running exerciser composed of a support stand
91
and a frame body
92
. A rail
911
is mounted at top end of the support stand
91
. Two inner sides of the bottom end of the support stand
91
are respectively disposed with two sleeves
912
. Two roller shafts
93
are respectively disposed at front and rear ends of the frame body
92
. A running belt
94
is wound on the roller shafts
93
. A plane board
95
is mounted on inner side of the running belt
94
. Two pivot shafts
921
are respectively disposed on two sides of front end of the frame body
92
for pivotally connecting with the sleeves
912
of the support stand
91
. Accordingly, the support stand
91
can be pivotally rotated and folded to reduce the room for storage of the running exerciser and facilitate transfer thereof.
However, the pivot shafts
921
are concentrically pivotally connected with the sleeves
912
. Therefore, when a user runs on the running exerciser, the frame body
92
suffers from the gravity and the pressure exerted by the pivot shafts
921
of the frame body
92
onto the sleeves
912
will concentrate on one line. Also, when the user runs on the running belt
94
, the frame body
92
is vibrated and the pivot shafts
921
and the sleeves
912
will exert a frictional force onto each other. Therefore, the bottom edges of the pivot shafts
921
suffer a downward pressure on one line and only this line is abraded under pressure. As a result, the components tend to deform and loosen after a period of use.
Moreover, when installed, the left and right pivot shafts
921
of the frame body
92
are respectively assembled with the left and right sleeves
912
of the support stand
91
and then the rail
911
is assembled. Such assembling procedure is troublesome and the production efficiency is lowered.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a folding structure of an exerciser including a frame body and a support stand. The support stand has two support legs on two sides of the frame body. The inner sides of the support legs are respectively disposed with a large arch plate and a small arch plate defining an arch rail therebetween for an arch projecting block of the frame body to slidably fit in. The pressure exerted onto the frame body during exercising is distributed and supported by two supporting points formed at the inner edge of the large arch plate and the outer edge of the small arch plate. Therefore, the supporting force is enhanced and the frictional force is distributed.
According to the above object, the exerciser of the present invention includes a frame body and a support stand. Two roller shafts are respectively disposed at front and rear ends of the frame body. A running belt is wound on the roller shafts. A plane board is mounted on inner side of the running belt. A rail is mounted at top end of the support stand. The support stand includes two support legs on two sides of the frame body. The inner sides of the support legs are respectively disposed with a large arch plate and a small arch plate positioned under the large arch plate. The large and small arch plates define an arch rail therebetween. An arch projecting block is disposed on each long side of the frame body for slidably fitting in the arch rail.
The present invention can be best understood through the following description and accompanying drawings wherein:


REFERENCES:
patent: 6042515 (2000-03-01), Wang
patent: 6179753 (2001-01-01), Barker et al.

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