U.S. patent application number 13/596080 was filed with the patent office on 2014-03-06 for structure of exercise cord.
The applicant listed for this patent is CHIEH-JEN LIN. Invention is credited to CHIEH-JEN LIN.
Application Number | 20140066270 13/596080 |
Document ID | / |
Family ID | 50188333 |
Filed Date | 2014-03-06 |
United States Patent
Application |
20140066270 |
Kind Code |
A1 |
LIN; CHIEH-JEN |
March 6, 2014 |
STRUCTURE OF EXERCISE CORD
Abstract
The present invention relates to a structure of exercise cord,
which includes at least one elastic cord having two ends of which
at least one is provided with a grip. The grip has two ends at top
side extending between which is a handhold and a base seat is
provided at the side opposite to the handhold. The base seat forms
three retainer seats that extend through a bottom of the base seat.
Each of the retainer seats has an upper end forming a
circumferential recess and including therein a clamp extending to
middle of the retainer seat. Three anchoring plugs are each
provided with a retention rim at an upper end thereof and forming a
cord extension hole in a lower end and also including a coupling
section formed on a side thereof. The three anchoring plugs are
respectively receivable in the thee retainer seats.
Inventors: |
LIN; CHIEH-JEN; (New Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LIN; CHIEH-JEN |
New Taipei City |
|
TW |
|
|
Family ID: |
50188333 |
Appl. No.: |
13/596080 |
Filed: |
August 28, 2012 |
Current U.S.
Class: |
482/121 |
Current CPC
Class: |
A63B 21/0442 20130101;
A63B 21/00185 20130101; A63B 21/00043 20130101; A63B 21/0557
20130101; A63B 23/03508 20130101; A63B 21/0552 20130101; A63B
21/00065 20130101; A63B 21/4035 20151001 |
Class at
Publication: |
482/121 |
International
Class: |
A63B 21/02 20060101
A63B021/02 |
Claims
1. A structure of exercise cord, comprising at least one elastic
cord having two ends of which at least one is provided with a grip,
the grip having two ends at top side extending between which is a
handhold and a base seat being provided at the side opposite to the
handhold, the base seat forming three retainer seats that extend
through a bottom of the base seat, each of the retainer seats
having an upper end forming a circumferential recess and comprising
therein a clamp extending to middle of the retainer seat, three
anchoring plugs being each provided with a retention rim at an
upper end thereof and forming a cord extension hole in a lower end
and also comprising a coupling section formed on a side thereof,
the three anchoring plugs being respectively receivable in the thee
retainer seats; characterized in that the elastic cord is received
through the lower end cord extension hole of one of the anchoring
plugs whereby when the anchoring plug is set in the corresponding
retainer seat, the side coupling section of the anchoring plug is
in close engagement with the clamp of the retainer seat so as to
restrain the elastic cord in the space between the retainer seat
and the anchoring plug.
2. The structure of exercise cord according to claim 1, wherein the
elastic cord is received in the cord extension hole in such a way
that a leading end section of the elastic cord forms an upper
folded section, while a tailing end section forms a lower folded
section.
3. The structure of exercise cord according to claim 1, wherein the
elastic cord is received through the anchoring plug in such a way
that the anchoring plug is only removable by simultaneously holding
the upper folded section and the lower folded section to apply a
force in a direction toward the handhold in order to allow a user
to adjust magnitude of elastic force thereof.
4. The structure of exercise cord according to claim 2, wherein the
elastic cord is received through the anchoring plug in such a way
that the anchoring plug is only removable by simultaneously holding
the upper folded section and the lower folded section to apply a
force in a direction toward the handhold in order to allow a user
to adjust magnitude of elastic force thereof.
5. The structure of exercise cord according to claim 1, wherein
each of the retainer seats has an upper end forming a
circumferential recess and each of the anchoring plugs forms a
retention rim at an upper end thereof, the retention rim being
engageable with the circumferential recess when the anchoring plug
is received in the retainer seat to enhance tight engagement
therebetween.
Description
(a) TECHNICAL FIELD OF THE INVENTION
[0001] The present invention generally relates to a structure of
exercise cord, and more particularly to a structure of exercise
cord that is an exercise equipment allowing of stretching exercise
in which an elastic cord and a grip are fixedly connect to prevent
the elastic cord from separating and thus incapable of maintaining
the desired function thereof and also to allow of adjustment of the
length and the magnitude of elastic force of the elastic cord to
achieve the purposes of secure connection and easy adjustment.
(b) DESCRIPTION OF THE PRIOR ART
[0002] An exercise cord is usually used to help stretching the body
of a user, effecting resistance training and body building. The
exercise cord is small and light weighted, making it easy to be
carried and stored by a use. The most important part of the
exercise cord that requires constant maintenance is an elastic
cord. The elastic cord often undergoes elastic fatigue, damaging,
and breaking after a long term use. In this condition, the damaged
or aging elastic cord must be replaced by a new one. Further, users
also desire to adjust the magnitude of the elastic force to accord
to each individual's physical condition.
[0003] U.S. Pat. Nos. 5,398,698, 6,648,804, 6,837,835, 7,147,592,
and 7,316,636 all disclose or show an exercise cord of which the
elastic cord is fixed in a retainer seat of a grip by having an
anchoring sphere fit into the retainer seat so that the elastic
cord can be securely retained by the sphere fit in the retainer
seat to thereby achieve the purposes of fixing. However, when no
stretching exercise is taken or the equipment is not in use, if an
external force is applied in a direction toward the grip, the
elastic cord will cause the sphere to get out of the retainer seat.
In the next time of use, if the user does not take a check
carefully, the force that the user applies may cause the elastic
cord and the sphere to move in opposite directions with high
speeds. This may easily hurt the face or body of the user.
Apparently, the conventional structure is poor is securely fixing
and has poor safety. The users are not paying more attention to the
adjustability and safety of the exercise cord and more improvement
can be made in these respects.
SUMMARY OF THE INVENTION
[0004] In view of the above discussed issues and problems, the
present invention aims to provide a structure of exercise cord that
meets the needs of the modern users.
[0005] An object of the present invention is to have an elastic
cord received through a cord extension hole formed in a lower end
of an anchoring plug whereby when the anchoring plug is set in a
retainer seat, a coupling section formed on a side surface of the
anchoring plug is in close engagement with a clamp formed inside
the retainer seat so as to restrain the elastic cord in the space
between the retainer seat and the anchoring plug.
[0006] Another object of the present invention is to have an
elastic cord received in a cord extension hole in such a way that a
leading end section of the elastic cord forms an upper folded
section, while a tailing end section forms a lower folded
section.
[0007] A further object of the present invention is to have an
elastic cord received through an anchoring plug in such a way that
the anchoring plug is only removable by simultaneously holding an
upper folded section a the lower folded section to apply a force in
a direction toward a handhold in order to allow a user to adjust
magnitude of elastic force thereof.
[0008] Yet a further object of the present invention is to provide
a retainer seat having an upper end forming a circumferential
recess and an anchoring plug forming a retention rim at an upper
end thereof, whereby the retention rim is engageable with the
circumferential recess when the anchoring plug is received in the
retainer seat to enhance tight engagement therebetween.
[0009] The present invention provides a structure of exercise cord,
which comprises at least one elastic cord having two ends of which
at least one is provided with a grip. The grip has two ends at top
side extending between which is a handhold and a base seat is
provided at the side opposite to the handhold. The base seat forms
three retainer seats that extend through a bottom of the base seat.
Each of the retainer seats has an upper end forming a
circumferential recess and comprising therein a clamp extending to
middle of the retainer seat. Three anchoring plugs are each
provided with a retention rim at an upper end thereof and forming a
cord extension hole in a lower end and also comprising a coupling
section formed on a side thereof. The three anchoring plugs are
respectively receivable in the thee retainer seats. With the
elastic cord received through one of the anchoring plugs, the
anchoring plug is fit into and retained in a corresponding retainer
seat so that the elastic cord is restrained in the space between
the two, making it not possible to effect an adjustment by only
pulling one side of the elastic cord. Adjustment can only be
effected through simultaneously pulling both sides of the elastic
cord. Thus, the purposes of secure connection and easy adjustment
can be achieved.
[0010] The foregoing objectives and summary provide only a brief
introduction to the present invention. To fully appreciate these
and other objects of the present invention as well as the invention
itself, all of which will become apparent to those skilled in the
art, the following detailed description of the invention and the
claims should be read in conjunction with the accompanying
drawings. Throughout the specification and drawings identical
reference numerals refer to identical or similar parts.
[0011] Many other advantages and features of the present invention
will become manifest to those versed in the art upon making
reference to the detailed description and the accompanying sheets
of drawings in which a preferred structural embodiment
incorporating the principles of the present invention is shown by
way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a perspective view showing a structure according
to the present invention.
[0013] FIG. 2 is an exploded view of the structure according to the
present invention.
[0014] FIG. 3 is a perspective view illustrating the assembling of
the structure of the present invention.
[0015] FIG. 3A is a cross-sectional view taken along line A-A of
FIG. 3.
[0016] FIG. 4 is a perspective view illustrating the structure of
the present invention in an assembled form.
[0017] FIG. 4A is a cross-sectional view taken along line B-B of
FIG. 4.
[0018] FIG. 4B is an enlarged view of a circled portion of FIG.
4A.
[0019] FIG. 4C is a cross-sectional view taken along line C-C of
FIG. 4.
[0020] FIG. 4D is an enlarged view of a circled portion of FIG.
4C.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0021] The following descriptions are exemplary embodiments only,
and are not intended to limit the scope, applicability or
configuration of the invention in any way. Rather, the following
description provides a convenient illustration for implementing
exemplary embodiments of the invention. Various changes to the
described embodiments may be made in the function and arrangement
of the elements described without departing from the scope of the
invention as set forth in the appended claims.
[0022] A detailed description of the structure and function of the
present invention will be given with reference to a preferred
embodiment illustrated in the drawings in order to better explain
the inventive idea of the present invention. The present invention
relates to a structure of exercise cord, which, as shown in FIGS.
1-4D, has a structure generally comprising a grip 1, a handhold 11,
a base seat 12, retainer seats 2, anchoring plugs 3, and an elastic
cord 4.
[0023] Referring to FIGS. 1-4D, the present invention is generally
structured such that at least one of two ends of at least one
elastic cord 4 is provided with a grip 1. The grip 1 has two ends
at the top side extending between which is a handhold 11 and a base
seat 12 is provided at the side opposite to the handhold 11. The
base seat 12 forms three retainer seats 2 that extend through a
bottom of the base seat. Each of the retainer seats 2 has an upper
end forming a circumferential recess 21 and comprising therein a
clamp 22 extending to the middle of the retainer seat. Three
anchoring plugs 3 are each provided with a retention rim 31 at an
upper end thereof and forming a cord extension hole 33 in a lower
end and also comprising a coupling section 32 formed on a side
thereof. The three anchoring plugs 3 are receivable in the thee
retainer seats 2.
[0024] As shown in FIGS. 2-4, the exercise cord of the present
invention is structured so that an elastic cord 4 is first arranged
to have a leading end thereof received through one of the anchoring
plugs 3 and then the anchoring plug 3 is downward and forcibly fit
into the corresponding retainer seat 2. The leading end of the
elastic cord 4 that extends through the anchoring plug 3 is folded
to form an upper folded section 41, while a tailing end section of
the cord that located rearward of the leading end section becomes a
lower folded section 42. The clamp 22 formed inside the retainer
seat 2 extends to a middle of the retainer seat but not completely
extending through the base seat 12. Referring to FIGS. 4A-4D, the
coupling section 32 of each anchoring plug 3 is in close engagement
with the clamp 22 of the corresponding retainer seat 2, whereby the
anchoring plug 3 is not caused to rotate either clockwise or
counterclockwise when the elastic cord 4 is subjected to an
external force applied thereto so as to damage the elastic property
of the elastic cord 4. The retention rim 31 formed on an upper end
circumference of the anchoring plug 3 is fit in the circumferential
recess 21 of the retainer seat 2 so as to retain the anchoring plug
3 in the retainer seat 2 in such a way that the anchoring plug 3 is
in tightly engagement with the retainer seat 2, whereby with the
tight engagement between the anchoring plug 3 and the retainer seat
2, the upper folded section 41 and the lower folded section 42 of
the elastic cord 4 are securely held by being clamped in the
interior space of the retainer seat and the position of the elastic
cord 4 can maintain unchanged even it is put in idle after use. In
an attempt to adjust the magnitude of elastic force of the elastic
cord 4, if only one of the upper folded section 41 and the lower
folded section 42 is held and a force is applied in a direction
toward the handhold 11, the force applied to the sections will be
spread along the elastic cord 4, making it not possible to be
withdrawn from the anchoring plug 3 for effecting adjustment. This
structure is also effective in preventing the anchoring plug 3 from
separating or springing off to cause accidental damage due to one
of the upper folded section 41 and the lower folded section 42
being held. The anchoring plug 3 can only be entirely withdrawn
from the retainer seat 2 by simultaneously holding the upper folded
section 41 and the lower folded section 42 and applying a force in
the direction toward the handhold 11 and then adjustment of the
magnitude of elastic force can be effected. The base seat 12
comprises three retainer seats 2 and the three retainer seats 2
have the same structure, whereby the assembling described above can
be expanded to at most three elastic cords 4 in order to provide an
adjustable range of the magnitude of elastic force. In summary, the
present invention can achieve both secure connection and easy
adjustment.
[0025] It will be understood that each of the elements described
above, or two or more together may also find a useful application
in other types of methods differing from the type described
above.
[0026] While certain novel features of this invention have been
shown and described and are pointed out in the annexed claim, it is
not intended to be limited to the details above, since it will be
understood that various omissions, modifications, substitutions and
changes in the forms and details of the device illustrated and in
its operation can be made by those skilled in the art without
departing in any way from the spirit of the present invention.
* * * * *