Running exerciser structure

Details Running exerciser structure Running exerciser structure

2000-12-05

2002-06-04

Crow, Stephen R. (Department: 3764)

Exercise devices

Involving user translation or physical simulation thereof

Treadmill for foot travel

Reexamination Certificate

active

06398696

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention is related to an improved running exerciser having simple structure and better supporting strength.
FIG. 9
shows a conventional running exerciser including a frame body
81
, a base seat
82
, a connecting member
83
, a telescopic rod
84
and an elevating member
9
. The base seat
82
is pivotally connected with one end of the connecting member
83
. The other end of the connecting member
83
is pivotally connected with the frame body
81
by a pivot member
811
. The elevating member
9
has a pivot section
91
connected with the base seat
82
. The pivot section
91
is pivotally connected with a driven section
93
. A driving section
92
is disposed on the driven section
93
and connected with the telescopic rod
84
. The telescopic rod
84
is a thread rod driven by a motor
85
to extend or retract. When the telescopic thread rod
84
is driven, the force driving section
92
pushes the driven section
93
to swing and lift the base seat
82
.
FIG. 10
shows that the elevating member
9
lifts the base seat
82
. The base seat
82
is pivotally connected with the connecting member
83
. Therefore, when the connecting member
83
is swung, the base seat
82
is moved along an arch path. That is, when a user runs on the base seat
82
, the pressure exerted onto the base seat
82
will form an action force making the base seat
82
move upward along an arch path. In other words, the pressure exerted onto the base seat
82
has a vertical and a horizontal components which both are borne by the elevating member
9
. The pivot section
91
of the elevating member
9
is connected with the base seat
82
and the driving section
92
is connected with the telescopic rod
84
. The driven section
93
swings to retain the base seat
82
. When the elevating member
9
suffers the vertical and horizontal components of action force, the action force of the pivot section
91
, driving section
92
and driven section
93
will be concentrated on the adjoining point A of the pivot section
91
, driving section
92
and driven section
93
as shown in FIG.
10
. This often leads to bending and deformation or even breakage of the driving section
92
and the driven section
93
. Therefore, the safety in use can be hardly ensured. Moreover, the elevating member
9
has complicated structure. This leads to higher manufacturing cost.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide an improved running exerciser structure in which the rollers of the frame body are mounted in the vertical slide rails of the base seat, whereby the frame body is restricted by the slide rails and can be only moved up and down. The rocking arms, telescopic rod and the frame body form a firm triangular supporting structure. Therefore, the slide rails and the rollers serve to bear the horizontal component of the force exerted onto the frame body, while the rocking arms and the telescopic rod only need to bear the vertical component of the force exerted onto the frame body. Therefore, a better supporting effect is provided.
It is a further object of the present invention to provide the above running exerciser in which the telescopic rod directly pushes the rocking arms to swing and lift or lower the frame body. Therefore, the structure is simplified and the manufacturing cost is reduced.
The present invention can be best understood through the following description and accompanying drawings wherein:


REFERENCES:
patent: 4844449 (1989-07-01), Truslaske
patent: 5833577 (1998-11-01), Hurt
patent: 5921893 (1999-07-01), Hurt

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