U.S. patent application number 10/622537 was filed with the patent office on 2005-01-27 for magnetic resistance adjusting device for exerciser.
Invention is credited to Chang, Huang-Tung.
Application Number | 20050020410 10/622537 |
Document ID | / |
Family ID | 34079761 |
Filed Date | 2005-01-27 |
United States Patent
Application |
20050020410 |
Kind Code |
A1 |
Chang, Huang-Tung |
January 27, 2005 |
Magnetic resistance adjusting device for exerciser
Abstract
A magnetic resistance adjusting device of a stationary bicycle
includes a plate pivotably connected to a frame of the bicycle and
a plurality of magnetic pieces are attached on a side of the plate.
The magnetic pieces are located to face a side of a periphery of an
aluminum wheel of the bicycle. The plate is connected to a pulling
member which pivots the plate so as to adjust a number of the
magnetic pieces that face the aluminum wheel. A guide member is
located on the base and the plate is guided by the guide member
when the plate is pivoted such that a gap between the aluminum
wheel and the plate is unchanged.
Inventors: |
Chang, Huang-Tung;
(Chang-Hua City, TW) |
Correspondence
Address: |
HUANG-TUNG CHANG
PO BOX 487
Chang-Hua City
500
TW
|
Family ID: |
34079761 |
Appl. No.: |
10/622537 |
Filed: |
July 21, 2003 |
Current U.S.
Class: |
482/63 ;
482/57 |
Current CPC
Class: |
A63B 21/0051 20130101;
A63B 22/0605 20130101 |
Class at
Publication: |
482/063 ;
482/057 |
International
Class: |
A63B 022/06 |
Claims
What is claimed is:
1. A magnetic resistance type exerciser comprising: a base and a
post connected to a top of the base, a driving wheel rotatably
connected to a first frame extending from the post and a crank
connected to the driving wheel, an aluminum wheel rotatably
connected to a second frame on the base and a belt connected
between a center of the aluminum wheel and the driving wheel; a
plate pivotably connected to the second frame and a plurality of
magnetic pieces attached on a side of the plate, the magnetic
pieces being located to face a side of a periphery of the aluminum
wheel, a pulling member connected to the plate so that the plate is
pivoted relative to the aluminum wheel, and a guide member located
on the base and the plate being guided by the guide member when the
plate is pivoted.
2. The exerciser as claimed in claim 1 wherein the guide member has
two rollers which contact the side of the plate.
3. The exerciser as claimed in claim 1, wherein the guide member
has a groove defined therethrough and the plate has a protrusion
which is movably engaged with the groove.
4. The exerciser as claimed in claim 1, wherein the guide member
has a curve edge and the plate has a hook which is movably hooked
to the curve edge of the guide member.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a magnetic resistance
adjusting device that includes a plate having magnets which is
pivotable relative to the wheel and a guide member for maintaining
a fixed gap between the plate and the wheel.
BACKGROUND OF THE INVENTION
[0002] A conventional stationary bicycle generally includes a wheel
and a crank is connected to the wheel so that the user may operate
the crank to rotate the wheel. In order to have better exercising
feature, a resistance device is connected to the wheel so that the
user has to operate the crank with more effort so as to be
exercised. A conventional magnetic resistance device employs a
wheel and a carrying member which has a lot of magnetic pieces
connected thereto and is able to be moved into a central recess of
the wheel. The distance between the magnetic pieces and the wheel
decides the force of the magnetic resistance to the user.
Nevertheless, because the magnetic force is so huge that when the
carrying member is moved into the central recess of the wheel, the
carrying member could be tilted or even deformed. The users have to
use a lot of force to operate the movement of the carrying
member.
[0003] The present invention intends to provide a magnetic
resistance adjusting device for a stationary bicycle wherein the
gap between the wheel and the magnetic pieces is maintained
unchanged, only the number of the magnetic pieces facing the wheel
is changed.
SUMMARY OF THE INVENTION
[0004] In accordance with one aspect of the present invention,
there is provided a magnetic resistance type exerciser that
comprises a base with a post connected to a top of the base and a
driving wheel with a crank is rotatably connected to a first frame
extending from the post. An aluminum wheel is rotatably connected
to a second frame on the base and a belt is connected between a
center of the aluminum wheel and the driving wheel.
[0005] A plate is pivotably connected to the second frame and a
plurality of magnetic pieces are attached on a side of the plate.
The magnetic pieces are located to face a side of a periphery of
the aluminum wheel. A pulling member is connected to the plate so
as to pivot the plate relative to the aluminum wheel. A guide
member is located on the base and the plate is guided by the guide
member when the plate is pivoted.
[0006] The present invention will become more obvious from the
following description when taken in connection with the
accompanying drawings which show, for purposes of illustration
only, a preferred embodiment in accordance with the present
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a side view of the stationary bicycle of the
present invention;
[0008] FIG. 2 shows the magnetic resistance adjusting device of the
present invention;
[0009] FIG. 3 shows the gap between the aluminum wheel and the
plate is unchanged by the guide member;
[0010] FIG. 4 shows that the plate is pivoted away from the
aluminum wheel;
[0011] FIG. 5 shows all the magnetic pieces are located to face the
aluminum wheel,
[0012] FIG. 6 shows the rollers of the guide member can be replaced
with balls;
[0013] FIG. 7 shows another embodiment of the guide member;
[0014] FIG. 8 shows two sides of the plate used in FIG. 7;
[0015] FIG. 9 shows all the magnetic pieces are located to face the
aluminum wheel of the embodiment as shown in FIG. 7;
[0016] FIG. 10 shows yet another embodiment of the guide member of
the present invention;
[0017] FIG. 11 shows the plate used in FIG. 10;
[0018] FIG. 12 shows a further embodiment of the magnetic
resistance adjusting device of the present invention;
[0019] FIG. 13 shows the magnetic resistance adjusting device of
the present invention is used on a stationary bicycle;
[0020] FIG. 14 shows the plate is hooked to a U-shaped bar on the
frame of the bicycle;
[0021] FIG. 15 shows the plate used in FIG. 13, and
[0022] FIG. 16 shows the magnetic pieced on the plate and facing
the aluminum wheel of the embodiment in FIG. 13.
DETAILED, DESCRIPTION OF THE PREFERRED EMBODIMENT
[0023] Referring to FIGS. 1 and 2, the magnetic resistance type
exerciser 10 of the present invention comprises a base 21 and a
post 11 is connected to a top of the base 21. A handlebar (not
shown) or the like is connected to a top of the post 11. A magnetic
resistance device 20 is connected to the exerciser 10 and includes
a driving wheel 13 rotatably connected to a first frame 12
extending from the post 11 and a crank 16 is connected to the
driving wheel 13. Pedals 15 are connected to each end of the crank
16 so that the user may operate the pedals 15 to rotate the driving
wheel 13. An aluminum wheel 25 is rotatably connected to a second
frame 22 on the base 21 and a belt 14 is connected between a center
of the aluminum wheel 25 and the driving wheel 13. The aluminum
wheel 25 is rotated when the driving wheel 13 is rotated.
[0024] A plate 26 is pivotably connected to the second frame 22 and
a plurality of magnetic pieces 27 are attached on a side of the
plate 26. The magnetic pieces 27 are located to face a side of a
periphery of the aluminum wheel 25 such that when the aluminum
wheel 25 is rotated, a magnetic resistance is generated. A pulling
member 28 has one end hooked on a support frame 261 on the plate 26
and a stop 281 on the pulling member 28 is engaged on another
support member 24 on the base 21. A spring 29 is mounted to the
pulling member 28 and biased between the end of the pulling member
28 and the stop 281. The plate 26 is pivoted relative to the
aluminum wheel 25 when a user pulls the pulling member 28.
[0025] A guide member 23 is located on the base 21 and two rollers
231 are connected to the guide member 23. The rollers 231 contact
the side of the plate 26 so that the plate 26 is pivoted to roll
the rollers 231 so that the gap between the aluminum wheel 25 and
the plate 26 and the magnetic pieces 27 is unchanged as shown in
FIG. 3.
[0026] As shown in FIG. 4, when the plate 26 is pivoted away from
the aluminum wheel 25, some of the magnetic pieces 27 are moved
away from the aluminum wheel 25 so that the magnetic resistance is
reduced. As shown in FIG. 5, when the plate 26 is adjusted to the
position as shown, all the magnetic pieces 27 are activated to
generate the resistance. The rollers 231 can also be replaced with
balls 231' as shown in FIG. 6.
[0027] Referring to FIGS. 7 to 9, the guide member 23 may have a
groove 232 defined therethrough and the plate 26 has a protrusion
262 which is movably engaged with the groove 232. The plate 26 is
then moved along the trace of the groove 232 and this also maintain
the gap to be not changed.
[0028] Referring to FIGS. 11 and 11, the guide member 23 can also
have a curve edge and the plate 26 has a hook 263 which is movably
hooked to the curve edge of the guide member 23. FIG. 12 shows that
the groove 221 can be made in the second frame 22 and the
protrusion 264 on the plate 26 is movably extended through the
groove 221.
[0029] Referring to FIGS. 13 to 16, the stationary bicycle 30 has a
fork 31 between which the aluminum wheel 41 is located. The plate
42 having magnetic pieces 44 has one end 421 pivotably connected to
a tube 311 on the fork 31 and the other end of the plate 42 has a
hook 422. A support member 423 is located on a mediate portion of
the plate 42 so as to perform as the support frame 261 disclosed in
FIG. 2. A U-shaped bar 32 is connected to two tubes 311' on the
fork 31 so that the hook 422 of the plate 42 is movably hooked on
the bar 32.
[0030] While we have shown and described the embodiment in
accordance with the present invention, it should be clear to those
skilled in the art that further embodiments may be made without
departing from the scope of the present invention.
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