U.S. patent application number 17/130027 was filed with the patent office on 2022-06-23 for rotation structure.
The applicant listed for this patent is Yu-Lun Tsai. Invention is credited to Yu-Lun Tsai.
Application Number | 20220193478 17/130027 |
Document ID | / |
Family ID | 1000005304432 |
Filed Date | 2022-06-23 |
United States Patent
Application |
20220193478 |
Kind Code |
A1 |
Tsai; Yu-Lun |
June 23, 2022 |
Rotation Structure
Abstract
A rotation structure includes a main body, two bearings mounted
in the main body, a mandrel mounted between the two bearings, a
rotation member having a first end connected with the mandrel, and
a weight mounted on a second end of the rotation member. The
rotation member is situated at a center of the mandrel and is
perpendicular to the mandrel. The rotation member and the weight
have a total length smaller than a radius of the main body. Thus,
the weight is rotated in the main body without producing sound so
that the main body is operated in a noiseless manner and will not
produce noise during movement.
Inventors: |
Tsai; Yu-Lun; (Taichung
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Tsai; Yu-Lun |
Taichung City |
|
TW |
|
|
Family ID: |
1000005304432 |
Appl. No.: |
17/130027 |
Filed: |
December 22, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B 21/00178 20130101;
A63B 21/222 20151001; A63B 21/0608 20130101 |
International
Class: |
A63B 21/06 20060101
A63B021/06; A63B 21/22 20060101 A63B021/22 |
Claims
1. A rotation structure comprising: a main body; two bearings
mounted in the main body; a mandrel mounted between the two
bearings; a rotation member having a first end connected with the
mandrel; and a weight mounted on a second end of the rotation
member; wherein: the main body includes two shells combined
together; the main body has an exterior provided with two finger
holes and two operation portions; the two finger holes correspond
to the two operation portions respectively; the main body has an
interior provided with a receiving chamber and two mounting
recesses; the mandrel has two ends pivotally mounted on the two
bearings; the mandrel is received in the receiving chamber; the two
bearings are mounted in the two mounting recesses respectively; the
rotation member is situated at a center of the mandrel; the
rotation member is perpendicular to the mandrel; and the rotation
member and the weight have a total length smaller than a radius of
the main body.
2. The rotation structure as claimed in claim 1, wherein each of
the two operation portions is a handgrip.
3. The rotation structure as claimed in claim 1, wherein each of
the two operation portions has an arcuate shape.
4. The rotation structure as claimed in claim 1, wherein each of
the two operation portions is provided with a nonslip portion.
5. The rotation structure as claimed in claim 1, wherein the
rotation member is a rod.
6. The rotation structure as claimed in claim 1, further
comprising: four positioning members extending through the two
shells to secure the two shells; wherein the four positioning
members are situated at upper ends and lower ends of the two
operation portions.
7. The rotation structure as claimed in claim 1, wherein: each of
the two shells has a periphery provided with at least one insertion
projection and at least one insertion slot; and the at least one
insertion projection of one of the two shells is inserted into the
at least one insertion slot of the other one of the two shells when
the two shells are juxtaposed to each other.
8. The rotation structure as claimed in claim 1, wherein: each of
the two shells has an interior provided with a plurality of first
connecting portions and a plurality of second connecting portions;
and the first connecting portions of one of the two shells are
connected with the second connecting portions of the other one of
the two shells when the two shells are juxtaposed to each other.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to an exercising device and,
more particularly, to a rotation structure, such as a gyro grip
centrifugal force fitness trainer, a fitness centrifugal ring or
the like, that provides an exercising effect.
2. Description of the Related Art
[0002] A conventional rotation structure in accordance with the
prior art shown in FIGS. 5 and 6 comprises a main body 50 having an
interior provided with a ball space 64, and a weighting ball 70
rolling in the ball space 64. The ball space 64 is defined by two
walls 65 and an annular slideway 66. The weighting ball 70 is
rolling in the annular slideway 66 and is limited by the two walls
65. The main body 50 includes two shells 61 and 62 combined
together. Each of the two shells 61 and 62 has a mounting face 63,
and the mounting faces 63 of the two shells 61 and 62 are
juxtaposed to each other. The main body 50 has an exterior provided
with two finger holes 52 and two handles 54. In operation, the
user's two hands hold and move the two handles 54 so that the main
body 50 is rotated, and the weighting ball 70 is rolling in the
ball space 64 to produce a centrifugal force. At this time, the two
handles 54 function as a pivot fulcrum, and the weighting ball 70
is rolling in the annular slideway 66 and is limited by the two
walls 65. In such a manner, the user's two hands has to overcome
the centrifugal force produced by the weighting ball 70 so as to
achieve an exercising effect. Thus, the conventional rotation
structure exercises the user's two hands. However, the weighting
ball 70 frequently rubs the annular slideway 66 and the two walls
65 and produces sound loudly during rolling, thereby causing
disturbance to the user. In addition, the main body 50 cannot be
operated at the night to prevent from causing disturbance to the
neighbor.
BRIEF SUMMARY OF THE INVENTION
[0003] The primary objective of the present invention is to provide
a rotation structure that is noiseless during operation.
[0004] In accordance with the present invention, there is provided
a rotation structure comprising a main body, two bearings mounted
in the main body, a mandrel mounted between the two bearings, a
rotation member having a first end connected with the mandrel, and
a weight mounted on a second end of the rotation member. The main
body includes two shells combined together. The main body has an
exterior provided with two finger holes and two operation portions.
The two finger holes correspond to the two operation portions
respectively. The main body has an interior provided with a
receiving chamber and two mounting recesses. The mandrel has two
ends pivotally mounted on the two bearings. The mandrel is received
in the receiving chamber. The two bearings are mounted in the two
mounting recesses respectively. The rotation member is situated at
a center of the mandrel. The rotation member is perpendicular to
the mandrel. The rotation member and the weight have a total length
smaller than a radius of the main body.
[0005] According to the primary advantage of the present invention,
the main body is operated in a noiseless manner and will not
produce noise during movement to prevent from causing disturbance
to other people during the exercising process so that the rotation
structure is operated at any time.
[0006] According to another advantage of the present invention, the
rotation structure provides an exercising effect to train the
user's hands, wrists, and feet.
[0007] According to a further advantage of the present invention,
the rotation structure has a simplified construction to decrease
the cost of fabrication and production.
[0008] According to a further advantage of the present invention,
the rotation structure is assembled easily and conveniently.
[0009] Further benefits and advantages of the present invention
will become apparent after a careful reading of the detailed
description with appropriate reference to the accompanying
drawings.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)
[0010] FIG. 1 is a perspective view of a rotation structure in
accordance with the preferred embodiment of the present
invention.
[0011] FIG. 2 is an exploded perspective view of a rotation
structure in accordance with the preferred embodiment of the
present invention.
[0012] FIG. 3 is a cross-sectional operational view of the rotation
structure in accordance with the preferred embodiment of the
present invention.
[0013] FIG. 4 is another cross-sectional operational view of the
rotation structure in accordance with the preferred embodiment of
the present invention.
[0014] FIG. 5 is an exploded perspective view of a conventional
rotation structure in accordance with the prior art.
[0015] FIG. 6 is a cross-sectional operational view of the
conventional rotation structure in accordance with the prior
art.
DETAILED DESCRIPTION OF THE INVENTION
[0016] Referring to the drawings and initially to FIGS. 1 and 2, a
rotation structure in accordance with the preferred embodiment of
the present invention comprises a main body 10, two bearings 34
mounted in the main body 10, a mandrel 30 mounted between the two
bearings 34, a rotation member 32 having a first end connected with
the mandrel 30, and a weight 36 mounted on a second end of the
rotation member 32.
[0017] The main body 10 includes two shells 20 and 21 juxtaposed to
each other and combined together. The main body 10 has an exterior
provided with two finger holes 12 and two operation portions 14.
The two finger holes 12 correspond to the two operation portions 14
respectively. The main body 10 has an interior provided with a
receiving chamber 22 and two mounting recesses 24. The receiving
chamber 22 is defined in the two shells 20 and 21.
[0018] The mandrel 30 has two ends pivotally mounted on the two
bearings 34. The mandrel 30, the rotation member 32 and the weight
36 are received in the receiving chamber 22 when the two shells 20
and 21 cover each other. The two bearings 34 are mounted in the two
mounting recesses 24 respectively when the two shells 20 and 21
cover each other.
[0019] The rotation member 32 is situated at a center of the
mandrel 30 and is located between the mandrel 30 and the weight 36.
The rotation member 32 is perpendicular to the mandrel 30. The
rotation member 32 and the weight 36 have a total length smaller
than a radius of the main body 10. The weight 36 is rotatable in
the receiving chamber 22.
[0020] In the preferred embodiment of the present invention, each
of the two operation portions 14 is a handgrip.
[0021] In the preferred embodiment of the present invention, each
of the two operation portions 14 has an arcuate shape.
[0022] In the preferred embodiment of the present invention, each
of the two operation portions 14 is provided with a nonslip portion
16.
[0023] In the preferred embodiment of the present invention, the
rotation member 32 is a rod or pole.
[0024] In the preferred embodiment of the present invention, the
rotation structure further comprises four positioning members 40
extending through the two shells 20 and 21 to secure the two shells
20 and 21. The four positioning members 40 are situated at upper
ends and lower ends of the two operation portions 14.
[0025] In the preferred embodiment of the present invention, each
of the two shells 20 and 21 has a periphery provided with at least
one insertion projection 261 and at least one insertion slot 262.
The at least one insertion projection 261 of one of the two shells
20 and 21 is inserted into the at least one insertion slot 262 of
the other one of the two shells 20 and 21 when the two shells 20
and 21 are juxtaposed to each other. Thus, the thickness of the two
shells 20 and 21 is reduced, and the whole weight of the main body
10 is reduced.
[0026] In the preferred embodiment of the present invention, each
of the two shells 20 and 21 has an interior provided with a
plurality of first connecting portions 281 and a plurality of
second connecting portions 282. The first connecting portions 281
of one of the two shells 20 and 21 are connected with the second
connecting portions 282 of the other one of the two shells 20 and
21 when the two shells 20 and 21 are juxtaposed to each other, to
enhance the combination strength of the main body 10.
[0027] In the preferred embodiment of the present invention, the
mandrel 30 is disposed at a center of each of the two shells 20 and
21.
[0028] In operation, referring to FIG. 3 with reference to FIGS. 1
and 2, the user's two hands hold and move the two operation
portions 14 so that the main body 10 is rotated, and the rotation
member 32 and the weight 36 are pivoted about the mandrel 30 to
produce a centrifugal force. At this time, the two operation
portions 14 function as a pivot fulcrum. In such a manner, the
user's two hands has to overcome the centrifugal force produced by
the weight 36 so as to achieve an exercising effect. Thus, the
rotation structure exercises the user's two hands. At this time,
the weight 36 is combined with the rotation member 32 and will not
rub the inner wall of the two shells 20 and 21 to prevent from
producing noise during rotation of the weight 36 so that the main
body 10 is operated smoothly and will not produce noise during
movement.
[0029] Alternatively, referring to FIG. 4 with reference to FIGS. 1
and 2, the user's two palms pass through the two finger holes 12
and press the main body 10 to direct hold and move the main body 10
so that the main body 10 is rotated, and the rotation member 32 and
the weight 36 are pivoted about the mandrel 30 to produce a
centrifugal force. At this time, the two finger holes 12 function
as a pivot fulcrum. In such a manner, the user's two hands has to
overcome the centrifugal force produced by the weight 36 so as to
achieve an exercising effect. Thus, the rotation structure
exercises the user's two hands. At this time, the weight 36 is
combined with the rotation member 32 and will not rub the inner
wall of the two shells 20 and 21 to prevent from producing noise
during rotation of the weight 36 so that the main body 10 is
operated smoothly and will not produce noise during movement.
[0030] Alternatively, the user's two feet hold and move the two
operation portions 14 so that the main body 10 is rotated, and the
rotation member 32 and the weight 36 are pivoted about the mandrel
30 to produce a centrifugal force. At this time, the two operation
portions 14 function as a pivot fulcrum. In such a manner, the
user's two feet has to overcome the centrifugal force produced by
the weight 36 so as to achieve an exercising effect. Thus, the
rotation structure exercises the user's two feet. At this time, the
weight 36 is combined with the rotation member 32 and will not rub
the inner wall of the two shells 20 and 21 to prevent from
producing noise during rotation of the weight 36 so that the main
body 10 is operated smoothly and will not produce noise during
movement.
[0031] Accordingly, the main body 10 is operated in a noiseless
manner and will not produce noise during movement to prevent from
causing disturbance to other people during the exercising process
so that the rotation structure is operated at any time. In
addition, the rotation structure provides an exercising effect to
train the user's hands, wrists, and feet. Further, the rotation
structure has a simplified construction to decrease the cost of
fabrication and production. Further, the rotation structure is
assembled easily and conveniently.
[0032] Although the invention has been explained in relation to its
preferred embodiment(s) as mentioned above, it is to be understood
that many other possible modifications and variations can be made
without departing from the scope of the present invention. It is,
therefore, contemplated that the appended claim or claims will
cover such modifications and variations that fall within the scope
of the invention.
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