U.S. patent application number 15/541678 was filed with the patent office on 2017-12-21 for rowing machine.
This patent application is currently assigned to XIAMEN AOLRO TECHNOLOGY CO., LTD.. The applicant listed for this patent is XIAMEN AOLRO TECHNOLOGY CO., LTD.. Invention is credited to Yanwei HOU.
Application Number | 20170361152 15/541678 |
Document ID | / |
Family ID | 57983862 |
Filed Date | 2017-12-21 |
United States Patent
Application |
20170361152 |
Kind Code |
A1 |
HOU; Yanwei |
December 21, 2017 |
ROWING MACHINE
Abstract
A rowing machine has a base, a seat, a rotating plate, two oar
components, a damping mechanism and a transmission mechanism; the
base with a rack and a slope rail; the seat cushion slidably
coupled to the rail; the rotating plate with a fixing rotating
shaft rotatably assembled to the rack through the rotating shaft;
two oar components respectively connected to the two ends of the
rotating shaft by unilateral bearings in universal joining way to
unilaterally drive the rotating plate to rotate when swinging; the
rotation damping mechanism is assembled to the rack; the
transmission mechanism assembled between the rotating plate and the
damping mechanism to drive a damping wheel of the damping mechanism
when the rotating plate rotates.
Inventors: |
HOU; Yanwei; (Xiamen City,
Fujian, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
XIAMEN AOLRO TECHNOLOGY CO., LTD. |
Xiamen City, Fujian |
|
CN |
|
|
Assignee: |
XIAMEN AOLRO TECHNOLOGY CO.,
LTD.
Xiamen City, Fujian
CN
|
Family ID: |
57983862 |
Appl. No.: |
15/541678 |
Filed: |
April 27, 2016 |
PCT Filed: |
April 27, 2016 |
PCT NO: |
PCT/CN2016/080323 |
371 Date: |
July 5, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B 2210/50 20130101;
A63B 21/225 20130101; A63B 21/023 20130101; A61H 2205/081 20130101;
A63B 71/0622 20130101; A63B 21/005 20130101; A61H 2201/0149
20130101; A63B 21/0051 20130101; A63B 21/4039 20151001; A63B
22/0089 20130101; A63B 22/0087 20130101; A63B 21/0088 20130101;
A63B 21/00069 20130101; A63B 21/4045 20151001; A63B 23/0233
20130101; A63B 21/151 20130101; A63B 21/15 20130101; A63B 24/0087
20130101; A63B 22/0076 20130101; A63B 21/0455 20130101; A61H
2201/1284 20130101; A63B 23/03575 20130101; A63B 21/4035 20151001;
A61H 2201/1695 20130101; A63B 21/154 20130101; A61H 2015/0014
20130101; A63B 23/12 20130101; A63B 2022/0084 20130101; A63B
21/0084 20130101; A63B 22/001 20130101 |
International
Class: |
A63B 22/00 20060101
A63B022/00; A63B 24/00 20060101 A63B024/00; A63B 21/005 20060101
A63B021/005; A63B 23/035 20060101 A63B023/035; A63B 23/02 20060101
A63B023/02; A63B 21/008 20060101 A63B021/008; A63B 21/00 20060101
A63B021/00; A63B 23/12 20060101 A63B023/12 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 7, 2015 |
CN |
201510481405.6 |
Aug 7, 2015 |
CN |
201520591969.0 |
Claims
1. A rowing machine, wherein comprising: a base with a rack and a
slope rail; a seat cushion slidably coupled to the rail; a rotating
plate with a fixing rotating shaft rotatably assembled to the rack
through the rotating shaft; two oar components respectively
connected to the two ends of the rotating shaft by unilateral
bearings in universal joining way to unilaterally drive the
rotating plate to rotate when swinging; a rotation damping
mechanism with strength adjustable and assembled to the rack; and
an acceleration type transition transmission mechanism assembled
between the rotating plate and the damping mechanism to drive a
damping wheel of the damping mechanism when the rotating plate
rotates.
2. The rowing machine according to claim 1, wherein the
acceleration type transition transmission mechanism is a belt
pulley component, which comprises a rotating belt pulley and a
belt; the rotating belt pulley comprises a large and a small belt
pulleys coaxially connected, the rotating belt pulley is assembled
to the rack, the small belt pulley is linked to the rotating plate
by a first belt, the large belt pulley is linked to the damping
wheel by a second belt.
3. The rowing machine according to claim 2, wherein the
acceleration type transition transmission mechanism further
comprises two tensioning pulleys assembled to the rack respectively
to couple to the first and the second belts.
4. The rowing machine according to claim 1, wherein the
acceleration type transition transmission mechanism is a gear
component with at least one stage.
5. The rowing machine according to claim 1, wherein the
acceleration type transition transmission mechanism is a chain
component comprising a rotating chain plate and a chain; the
rotating chain plate comprises a large and a small chain plates
coaxially connected, the rotating chain plate is assembled to the
rack, the small chain plate is linked to the rotating plate by a
first chain, the large chain plate is linked to the damping wheel
by a second chain.
6. The rowing machine according to claim 1, wherein the oar
component comprises a shaft sleeve, a bearing and an oar; the shaft
sleeve is connected to the end portion of the rotating shaft by the
bearing, so that the shaft sleeve is rotatable with respect to the
rotating shaft, the shaft sleeve is disposed with two lugs, one end
of the oar is inserted between the two lugs and pivoted to the two
lugs, so that the oar is capable of axially swinging with respect
to the shaft sleeve; the oar is universally jointed to the end
portion of the rotating shaft by the shaft sleeve.
7. The rowing machine according to claim 1, wherein the damping
mechanism further comprises a magnetic board component, the damping
wheel is a magnetic control wheel, the magnetic board component is
assembled to the rack and is coupled to the magnetic control wheel,
the magnetic board component is connected to a spinner or an
electronic control component by a pull wire.
8. The rowing machine according to claim 1, wherein the damping
mechanism further comprises an electromagnetic component, the
damping wheel is a magnetic control wheel, the electromagnetic
component is assembled to the rack and is coupled to the magnetic
control wheel, the electromagnetic component is connected to an
electronic control instrument by a wire.
9. The rowing machine according to claim 1, wherein the damping
mechanism is a windage damping mechanism, the damping wheel is a
fan blade.
10. The rowing machine according to claim 1, wherein the damping
mechanism is a water resistance damping mechanism, the damping
wheel is a water wheel.
11. The rowing machine according to claim 1, wherein the seat
cushion comprises a cushion plate, a sliding groove disposed at the
bottom portion of the cushion plate and a seat back, the seat back
is pivoted to the rear end of the cushion plate by a torsion
spring.
12. The rowing machine according to claim 11, wherein a connecting
element is disposed between the cushion plate and the sliding
groove, the seat back comprises a seat back bar and a plurality of
cross bars, the bottom end of the seat back bar is pivoted to the
rear end of the connecting element by the torsion spring, the cross
bars are respectively fixedly connected to the two sides of the
seat back bar; each cross bar is sleeved with a cylindrical roller.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to fitness equipment,
particularly to a rowing machine.
BACKGROUND OF THE INVENTION
[0002] Rowing machine is also called boating machine which is a
kind of fitness equipment simulating boating. The traditional
rowing machine mainly adopts with a left and right handles and an
oil cylinder mechanism. The left and right handles are respectively
connected to the oil cylinder mechanism, and the damping effect of
the left and right handles in the shaking process is realized by
using the oil cylinder mechanism. This kind of rowing machine with
oil cylinder mechanism has disadvantages of high producing cost,
easy leakage problem of the oil cylinder and pollution of
environment. The rowing machine in current technology (as disclosed
in the Chinese patent database with publishing number CN203425451U)
has the handle connected to a webbing, the webbing is connected to
a pulley, and the pulley drives the damping wheel. When the user
pulls the webbing through the handle, the webbing drives the pulley
to rotate, and also causes the damping wheel to rotate. The damping
wheel produces a damping effect when the user pulls the handle.
During the process of pulling and returning, cooperating with the
sliding of the bottom seat, the user can achieve a simulation of
rowing. This kind of rowing machine has disadvantages as follows:
1. the webbing is easily broken, which results in increasing of use
costs. 2. the user can only pull and return through the handle, but
can not achieve a simulation of rowing with both hands; 3. the
handle is connected to the damping wheel by the webbing, so both
hands need to work at the same time, one hand of rowing can not be
achieved; 4, The returning is achieved by the action of elastic
element, resulting in unnatural phenomenon of the user's hands when
returning.
SUMMARY OF THE INVENTION
[0003] The present invention is provided with a new rowing machine
to overcome the disadvantages of the existing known technology,
this new structure application can not only adjust the damping
strength to adapt to different intensity of training, but also
achieve simulation of single hand/double hands rowing. No
resistance exists during the user returns hand/hands back, making
the machine with well simulation effect, simple structure and low
producing cost.
[0004] The technical proposal of the present invention is that: a
rowing machine, comprising:
[0005] a base with a rack and a slope rail;
[0006] a seat cushion slidably coupled to the rail;
[0007] a rotating plate with a fixing rotating shaft rotatably
assembled to the rack through the rotating shaft;
[0008] two oar components respectively connected to the two ends of
the rotating shaft by unilateral bearings in universal joining way
to unilaterally drive the rotating plate to rotate when
swinging;
[0009] a rotation damping mechanism with strength adjustable and
assembled to the rack;
[0010] and
[0011] an acceleration type transition transmission mechanism
assembled between the rotating plate and the damping mechanism to
drive a damping wheel of the damping mechanism when the rotating
plate rotates.
[0012] In another preferred embodiment, the acceleration type
transition transmission mechanism is a belt pulley component, which
comprises a rotating belt pulley and a belt; the rotating belt
pulley comprises a large and a small belt pulleys coaxially
connected, the rotating belt pulley is assembled to the rack, the
small belt pulley is linked to the rotating plate by a first belt,
the large belt pulley is linked to the damping wheel by a second
belt.
[0013] In another preferred embodiment, the acceleration type
transition transmission mechanism further comprises two tensioning
pulleys assembled to the rack respectively to couple to the first
and the second belts.
[0014] In another preferred embodiment, the acceleration type
transition transmission mechanism is a gear component with at least
one stage.
[0015] In another preferred embodiment, the acceleration type
transition transmission mechanism is a chain component comprising a
rotating chain plate and a chain; the rotating chain plate
comprises a large and a small chain plates coaxially connected, the
rotating chain plate is assembled to the rack, the small chain
plate is linked to the rotating plate by a first chain, the large
chain plate is linked to the damping wheel by a second chain.
[0016] In another preferred embodiment, the oar component comprises
a shaft sleeve, a bearing and an oar; the shaft sleeve is connected
to the end portion of the rotating shaft by the bearing, so that
the shaft sleeve is rotatable with respect to the rotating shaft,
the shaft sleeve is disposed with two lugs, one end of the oar is
inserted between the two lugs and pivoted to the two lugs, so that
the oar is capable of axially swinging with respect to the shaft
sleeve; the oar is universally jointed to the end portion of the
rotating shaft by the shaft sleeve.
[0017] In another preferred embodiment, the damping mechanism
further comprises a magnetic board component, the damping wheel is
a magnetic control wheel, the magnetic board component is assembled
to the rack and is coupled to the magnetic control wheel, the
magnetic board component is connected to a spinner or an electronic
control component by a pull wire.
[0018] In another preferred embodiment, the damping mechanism
further comprises an electromagnetic component, the damping wheel
is a magnetic control wheel, the electromagnetic component is
assembled to the rack and is coupled to the magnetic control wheel,
the electromagnetic component is connected to an electronic control
instrument by a wire.
[0019] In another preferred embodiment, the damping mechanism is a
windage damping mechanism, the damping wheel is a fan blade.
[0020] In another preferred embodiment, the damping mechanism is a
water resistance damping mechanism, the damping wheel is a water
wheel.
[0021] Compared with the prior art, the invention has the following
beneficial effects:
[0022] The present invention adopts the rotating plate, the oar
components, the accelerating transition transmission mechanism and
the rotation damping mechanism to form the main components of the
new rowing machine, and the rotating plate with a fixing rotating
shaft is rotatably assembled to the rack through the rotating
shaft; two oar components are respectively connected to the two
ends of the rotating shaft by unilateral bearings in universal
joining way to unilaterally drive the rotating plate to rotate when
swinging; the rotation damping mechanism assembled to the rack; the
acceleration type transition transmission mechanism is assembled
between the rotating plate and the damping mechanism to drive a
damping wheel of the damping mechanism when the rotating plate
rotates. This kind of new rowing machine of the present invention
can not only adjust the damping strength to adapt to different
intensity of training, but also achieve simulation of single
hand/double hands rowing. the machine has well simulation effect,
simple structure and low producing cost; it is a rowing machine
with new structure.
[0023] The oar components of the present invention are linked to
the damping mechanism through the rotating plate and the
transmission mechanism; in this way, there is no drawback that the
webbing of the existing known technology is easily broken. The oar
components of the present invention are connected to the rotating
shaft through the bearings and unilateral bearings. In this way,
when the oar is rotated in one direction (it is actually the
equivalent of swinging due to the small angle of rotation), the oar
drives the rotating plate to rotate through the bearings and
unilateral bearings.
[0024] When the oar is rotated in anther direction, the oar rotates
by itself through the unilateral bearings, that is to say, the oar
rotates bland with respect to the rotating shaft. In this way, no
resistance exists when the oar returns; the present invention adopt
two oar components, which are respectively connected to the
unilateral bearing and the end portion of the rotating shaft in
universal joining way. In this way, two oar components can be used
simultaneously, but also one can be used only. The present
invention can not only well simulate the rowing action, but also
realize various simulation effects.
[0025] A seat back is added at the rear part of the cushion plate,
and the seat back is pivoted to the rear end of the cushion plate
by a torsion spring, such to provide support to the back of the
rowing athlete in the process of simulating rowing, greatly
improving the effect of simulating rowing. Further more, the cross
bars are sleeved with cylindrical rollers, the cylindrical roller
can roll when used, providing massage on the back of the rowing
athlete, and increasing health care of the product.
[0026] The present invention will be further described with the
drawings and the embodiments; but it should be noted that, the new
rowing machine of the present invention is not limited to the
embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] FIG. 1 illustrates a schematic diagram of a first embodiment
of the present invention.
[0028] FIG. 2 illustrates a schematic diagram of the first
embodiment of the present invention in another view angle.
[0029] FIG. 3 illustrates an exploded and schematic diagram of the
first embodiment of the present invention.
[0030] FIG. 4 illustrates a schematic diagram of the rack of the
first embodiment of the present invention.
[0031] FIG. 5 illustrates a schematic diagram of the rotating
plate, the damping wheel and the transmission mechanism in coupling
way of the first embodiment of the present invention.
[0032] FIG. 6 illustrates an exploded diagram of the rotating
sleeve and the rotating plate of the oar component in coupling way
of the first embodiment of the present invention.
[0033] FIG. 7 illustrates a sectional diagram of the rotating
sleeve and the rotating plate of the oar component in coupling way
of the first embodiment of the present invention.
[0034] FIG. 8 illustrates a first schematic diagram of the first
embodiment of the present invention in usage state.
[0035] FIG. 9 illustrates a second schematic diagram of the first
embodiment of the present invention in usage state.
[0036] FIG. 10 illustrates a third schematic diagram of the first
embodiment of the present invention in usage state.
[0037] FIG. 11 illustrates a schematic diagram of the rotating
plate, the damping wheel and the transmission mechanism in coupling
way of the second embodiment of the present invention.
[0038] FIG. 12 illustrates a schematic diagram of the rotating
plate, the damping wheel and the transmission mechanism in coupling
way of the third embodiment of the present invention.
[0039] FIG. 13 illustrates a schematic diagram of the rotating
plate, the damping wheel and the transmission mechanism in coupling
way of the fourth embodiment of the present invention.
[0040] FIG. 14 illustrates an exploded diagram of the shaft sleeve
and the rotating plate of the oar component in coupling way of the
fifth embodiment of the present invention.
[0041] FIG. 15 illustrates a sectional diagram of the rotating
sleeve and the rotating plate of the oar component in coupling way
of the fifth embodiment of the present invention.
[0042] FIG. 16 illustrates a schematic diagram of the seat cushion
of the sixth embodiment of the present invention.
[0043] FIG. 17 illustrates a schematic diagram of the seat cushion
in usage state of the sixth embodiment of the present
invention.
[0044] FIG. 18 illustrates a schematic diagram of the sixth
embodiment of the present invention.
[0045] FIG. 19 illustrates a schematic diagram of the sixth
embodiment of the present invention in another view angle.
[0046] FIG. 20 illustrates a schematic diagram of the sixth
embodiment of the present invention in usage state.
DETAILED DESCRIPTION OF THE EMBODIMENTS
First Embodiment
[0047] Referring to FIGS. 1-10, a rowing machine of the present
invention comprises:
[0048] a base 1 with a rack 11 and a slope rail 12;
[0049] a seat cushion 2 slidably coupled to the rail 12;
[0050] a rotating plate 3 with a fixing rotating shaft 31 rotatably
assembled to the rack 11 through the rotating shaf 31;
[0051] two oar components 4 respectively connected to the two ends
of the rotating shaft 31 by unilateral bearings 51 in universal
joining way to unilaterally drive the rotating plate 3 to rotate
when swinging;
[0052] a rotation damping mechanism 6 with strength adjustable and
assembled to the rack 11; and
[0053] an acceleration type transition transmission mechanism 7
assembled between the rotating plate 3 and the damping mechanism 6
to drive a damping wheel 61 of the damping mechanism when the
rotating plate 3 rotates.
[0054] The base 1 further comprises a front base pipe component 13
and a rear base pipe component 14, the front base pipe component 13
is connected to the front portion of the rack 11, the rail 12 is
connected between the rear portion of the rack and the rear base
pipe component 14; the rack 11 is disposed with a rotating plate
assembly portion 15, a transmission mechanism assembly portion 16
and a damping mechanism assembly portion 17.
[0055] The acceleration type transition transmission mechanism 7 is
a belt pulley component, which comprises a rotating belt pulley 71
and a belt 72; the rotating belt pulley 71 comprises a large and a
small belt pulleys coaxially connected, the rotating belt pulley 71
is assembled to the rack 11, the small belt pulley 711 is linked to
the rotating plate 3 by a first belt 72, the large belt pulley 712
is linked to the damping wheel 61 by a second belt 72. The rotating
plate is a belt pulley as well, the damping wheel 61 is disposed
with a small wheel, a belt connection portion is disposed at the
small wheel.
[0056] The acceleration type transition transmission mechanism
further comprises two tensioning pulleys 73 assembled to the rack
11 respectively to couple to the first and the second belts. The
effect of the tensioning pulleys 73 is to make the belts tension
between the rotating plate 3 and transition transmission mechanism
7, and between transition transmission mechanism 7 and the damping
wheel 61.
[0057] The transmission mechanism of this embodiment is belt
transmission; it can also be available when it is gear transmission
or chain transmission. When using gear transmission, the
acceleration type transition transmission mechanism is a gear
component with at least one stage. When using chain transmission,
the acceleration type transition transmission mechanism is a chain
component comprising a rotating chain plate and a chain; the
rotating chain plate comprises a large and a small chain plates
coaxially connected, the rotating chain plate is assembled to the
rack, the small chain plate is linked to the rotating plate by a
first chain, the large chain plate is linked to the damping wheel
by a second chain.
[0058] The oar component 4 comprises a shaft sleeve 41, a bearing
42 and an oar 43; the shaft sleeve 41 is connected to the end
portion of the rotating shaft 31 by the bearing 42, so that the
shaft sleeve 41 is rotatable with respect to the rotating shaft 31,
the shaft sleeve 41 is disposed with two lugs 411, one end of the
oar 43 is inserted between the two lugs 411 and is pivoted to the
two lugs 411, so that the oar 43 is capable of axially swinging
with respect to the shaft sleeve 41; the oar 43 is universally
jointed to the end portion of the rotating shaft 31 by the shaft
sleeve 41. In this way, the shaft sleeve 41 is connected to the
rotating shaft 31 by the bearing 42 and the unilateral bearing 51.
When the oar 43 drive the shaft sleeve 41 rotated in one direction,
the rotation of the rotating shaft 31 is caused by the action of
the unilateral bearings 51, which is equivalent to drive the
rotating plate 3 to rotate. When the oar 43 drives the shaft sleeve
41 to rotate in anther direction, as with the universal bearing 51,
the shaft sleeve doesn't drive the rotating shaft 31 to rotate
blank with respect to the rotating shaft 31, therefore, the
rotating plate 3 doesn't rotate.
[0059] The damping mechanism 6 further comprises a magnetic board
component 62, the damping wheel 61 is a magnetic control wheel, the
magnetic board component 62 is assembled to the rack 11 and is
coupled to the magnetic control wheel, the magnetic board component
62 is connected to a spinner 63 by a pull wire.
[0060] In this embodiment, the damping mechanism 6 is magnetic
control type and manual operated, the distance of the magnetic
board component 62 and the magnetic control wheel is adjustable by
the spinner 63, such to adjust the damping.
[0061] In another case, an electronic control method is availbale
to adjust the distance between the magnetic board component 62 and
the magnetic control wheel by a motor (i.e., an electronic control
component).
[0062] The oar component of the present invention is linked to the
damping mechanism 6 through the rotating plate 3 and the
transmission mechanism 7; in this way, there is no drawback that
the webbing of the existing known technology is easy broken. The
oar component 4 of the present invention is connected to the
rotating shaft 31 by the bearing 42 and unilateral bearing 51. In
this way, when the oar 43 is rotated in one direction (it is
actually the equivalent to swinging due to the small angle of
rotation), the oar 43 drives the rotating plate 3 to rotate through
the bearings 42 and unilateral bearings 51. When the oar 43 rotates
in anther direction, the oar 43 rotates by itself through the
bearings 42 and unilateral bearings 51, that is to say, the oar 43
rotates blank with respect to the rotating shaft 31. In this way,
no resistance exists when the oar 43 returns back, user's hands can
return naturally; the present invention applies with two oar
components 4, which are connected to the end portions of the
rotating shaft 31 by unilateral bearings 51 in universal joining
way. In this way, two oar components 4 can be used simultaneously,
but also one can be used only. It can not only well simulate the
rowing action, but also realize various simulation effects (such as
single hand and double hands rowing, etc.). As can be seen from
FIG. 8 to FIG. 10, during the use, the user 100 can achieve
simulation of single hand/double hands rowing, and have a better
exercise on enhancing the muscles of the legs, the waist, the upper
limbs, the chest and the back.
Second Embodiment
[0063] Referring to FIG. 11, the difference of a rowing machine of
this embodiment from the first embodiment is the damping mechanism.
The damping mechanism further comprises an electromagnetic
component 64, the damping wheel 61 is a magnetic control wheel, the
electromagnetic component 64 is assembled to the rack 11 and is
coupled to the magnetic control wheel, the electromagnetic
component 64 is connected to an electronic control instrument by a
wire.
[0064] The damping strength of the damping wheel 61 can be adjusted
by adjusting the current of the electromagnetic component 64.
Third Embodiment:
[0065] Referring to FIG. 12, the difference of a rowing machine of
this embodiment from the first embodiment is the damping mechanism.
The damping mechanism is a windage damping mechanism; the damping
wheel is a fan blade 65.
Fourth Embodiment:
[0066] Referring to FIG. 13, the difference of a rowing machine of
this embodiment from the first embodiment is the damping mechanism.
The damping mechanism is a water resistance damping mechanism; the
damping wheel is a water wheel 66.
Fifth Embodiment:
[0067] Referring to FIGS. 14-15, the difference of a rowing machine
of this embodiment from the first embodiment is the oar component.
The oar component 4 of this embodiment comprises a shaft sleeve 41
and an oar 43, without the bearing; the shaft sleeve 41 is
connected to the end portion of the rotating shaft 31 by two
unilateral bearings 51, so that the shaft sleeve 41 is rotatable
unilaterally with respect to the rotating shaft 31; the shaft
sleeve 41 is disposed with two lugs 411, one end of the oar 43 is
inserted between the two lugs 411 and is pivoted to the two lugs
411, so that the oar 43 is capable of axially swinging with respect
to the shaft sleeve 41; the oar 43 is universally jointed to the
end portion of the rotating shaft 31 by the shaft sleeve 41.
[0068] In this way, the shaft sleeve 41 is connected to the end
portion of the rotating shaft 31 by two unilateral bearings 51.
When the oar 43 drives the shaft sleeve 41 rotated in one
direction, the rotation of the rotating shaft 31 is caused by the
action of the unilateral bearings 51, which is equivalent to
driving the rotating plate 3 to rotate. When the oar 43 drives the
shaft sleeve 41 rotated in anther direction, as with the unilateral
bearing 51, the shaft sleeve 41 doesn't drive the rotating shaft 31
to rotate blank with respect to the rotating shaft 31, therefore,
the rotating plate 3 doesn't rotate.
Sixth Embodiment:
[0069] Referring to FIGS. 16-20, the difference of the rowing
machine of this embodiment from the first embodiment is the seat
cushion. The seat cushion 2 of this embodiment comprises a cushion
plate 21, a sliding groove 22 disposed at the bottom portion of the
cushion plate and a seat back 23, the seat back 23 is pivoted to
the rear end of the cushion plate 21 by a torsion spring. The
sliding groove 22 is coupled to the rail 12 of the base 1.
[0070] A connecting element 24 is disposed between the cushion
plate 21 and the sliding groove 22, the seat back 23 is pivoted to
the rear end of connecting element 24 by a torsion spring. The seat
back 23 comprises a seat back bar 231 and a plurality of cross bars
232, the bottom end of the seat back bar 231 is pivoted to the rear
end of the connecting element 24 by the torsion spring, the cross
bars 232 are respectively fixedly connected to the two sides of the
seat back bar 231; The number of the cross bars 232 is even, two
cross bars 232 for a group symmetrically fixed on both sides of the
seat back bar 231. The seat back bar 231 is a rectangular hollow
tube, two cross bars 232 for a group symmetrically fixed on both
sides of the rectangular hollow tube. Two cross bars 232 for a
group connect into an integrated structure, and pass through the
rectangular hollow tube in the transverse direction. That is, two
cross bars 232 fixed on both sides of the seat back bar 231 is
actually one. And each cross bar 232 is sleeved with a cylindrical
roller 233.
[0071] Referring to FIG. 17, as the seat back 23 is pivoted to the
rear end of the connecting element 24 by torsion spring, when the
rowing simulator applies force on the seat back 23, the seat back
23 can overturn backwardly, theoretically, the seat back 23 can
overturn from position A to position B; when the rowing simulator
doesn't apply force on the seat back 23, the seat back 23 is reset
under the action of the torsion spring and overturns from position
B to position A.
[0072] To summarize, the new rowing machine can have a variety of
acceleration type transition transmission mechanism, such as belt
transmission mechanism, gear transmission mechanism, and chain
transmission mechanism. The purpose is to connect the power of the
oar component to the damping mechanism to form a different damping
effect. The rotation damping mechanism can also have many types,
such as magnetic control, electromagnet control, windage control
and water resistance control. Among them, some rotation damping
mechanism can choose manual control, electric control is also
available. The seat cushion can be provided with a seat back or
without a seat back.
[0073] Although the present invention has been described with
reference to the preferred embodiments thereof for carrying out the
patent for invention, it is apparent to those skilled in the art
that a variety of modifications and changes may be made without
departing from the scope of the patent for invention which is
intended to be defined by the appended claims.
INDUSTRIAL APPLICABILITY
[0074] The present invention adopts the base, the seat, the
rotating plate, the oar components, the rotation damping mechanism
and the acceleration type transition transmission mechanism to
constitute a new rowing machine. The base with a rack and a slope
rail; the rotating plate with the rotating plate and a fixing
rotating shaft; the oar component with a shaft sleeve and an oar;
the rotation damping mechanism with a magnetic board component and
a magnetic control wheel,or an electromagnetic component and a
magnetic control wheel, or a fan blade, or a water wheel; the
acceleration type transition transmission mechanism with a belt
pulley component, or a gear component, or a chain component. The
invention is easy to realize in industry, and the base, the seat,
the rotating plate, the oar components, the rotation damping
mechanism and the acceleration type transition transmission
mechanism and other components is also easy to process in the
industry.
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