U.S. patent application number 17/563461 was filed with the patent office on 2022-06-30 for exercise bar.
The applicant listed for this patent is DECATHLON. Invention is credited to Lucien Dony, Caroline Gillet, Mike Sobon.
Application Number | 20220203154 17/563461 |
Document ID | / |
Family ID | |
Filed Date | 2022-06-30 |
United States Patent
Application |
20220203154 |
Kind Code |
A1 |
Gillet; Caroline ; et
al. |
June 30, 2022 |
EXERCISE BAR
Abstract
The invention relates to an exercise bar intended for the
practice of a physical exercise, having a main tube with two ends
each equipped with a rod rotatably mounted through a setting system
comprising a device for blocking the rotation of the rod relative
to the main tube. The blocking device has a groove formed in the
rod and a bushing equipped with a lug disposed within the groove.
The blocking device has at least one notch formed longitudinally in
the end of the main tube. The notch is arranged to receive the lug
by translation of the bushing towards a position of blocking the
rotation of the bushing relative to the tube.
Inventors: |
Gillet; Caroline;
(Villeneuve d'Ascq, FR) ; Dony; Lucien;
(Villeneuve d'Ascq, FR) ; Sobon; Mike; (Villeneuve
d'Ascq, FR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
DECATHLON |
Villeneuve d'Ascq |
|
FR |
|
|
Appl. No.: |
17/563461 |
Filed: |
December 28, 2021 |
International
Class: |
A63B 21/072 20060101
A63B021/072 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 29, 2020 |
FR |
2014205 |
Claims
1. An exercise bar comprising a main tube for gripping by a user,
the main tube having two ends each equipped with a rod carrying an
endpiece for holding the bar between two lateral structures during
use of the exercise bar, at least one of the rods being rotatably
mounted through a system for adjusting the longitudinal dimension
of the exercise bar, the system comprising a device for blocking
the rotation of the rod relative to the main tube, the device
comprising a groove formed in the rod and a bushing equipped with a
lug which is disposed within the groove to guide the translation of
the bushing around the rod while preventing their relative
rotation, the exercise bar wherein the blocking device further
comprises at least one notch formed longitudinally in the end of
the main tube, the notch being arranged to selectively receive the
lug by translation of the bushing towards a rotational blocking
position of the bushing with respect to the tube.
2. The exercise bar according to claim 1, wherein the lug extends
radially inside the bushing.
3. The exercise bar according to claim 1, wherein the bushing
comprises a front portion and a rear portion over which the lug
extends longitudinally while presenting respectively front and rear
portions, the rear portion being arranged to ensure the
translational guidance of the bushing around the rod, the front
portion being arranged to ensure the rotational blocking of the
bushing with respect to the tube.
4. The exercise bar according to claim 3, wherein the front portion
of the lug is disposed within the groove.
5. The exercise bar according to claim 4, wherein the lug has a
free end which extends longitudinally along an internal diameter
(D) from the front portion towards the rear portion.
6. The exercise bar according to claim 3, wherein the bushing front
portion has an internal diameter (D1) which is larger than the
internal diameter (D2) of the bushing rear portion.
7. The exercise bar according to claim 6, wherein the internal
diameter of the bushing front portion--and/or respectively of the
bushing rear portion--forms a reduced clearance with the external
diameter of the end of the tube--and/or respectively of the
rod.
8. The exercise bar according to claim 1, having a slot extending
angularly and the lug being formed diametrically opposite to the
slot.
9. The exercise bar according to claim 8, wherein the slot extends
over the bushing along an angular dimension (.alpha.) comprised
between 60.degree. and 120.degree..
10. The exercise bar according to claim 1, wherein the end of the
main tube comprises two notches spaced apart angularly, the lug
being configured to selectively engaged into one notch in the
blocking position.
11. The exercise bar according to claim 10, wherein the notches are
spaced apart angularly on the end by an angle of 180.degree..
12. The exercise bar according to claim 1, wherein the two rods are
rotatably mounted on the corresponding end of the main tube through
a system for adjusting the longitudinal dimension of said bar, each
of said systems having a device for blocking the rotation of the
rod with respect to the main tube.
13. The exercise bar according to claim 1, wherein the main tube
comprises a coating which covers at least partially its periphery,
the coating comprising an external surface which is arranged to
form an area for gripping by the user.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the priority of French patent
application number 2014205, filed on Dec. 29, 2020, the entire
contents of which are incorporated herein by reference.
TECHNICAL FIELD
[0002] The invention relates to an exercise bar intended for the
practice of a physical exercise, in particular a pull-up type
muscular exercise.
[0003] Bars intended to be reversibly mounted in the frame of a
door are known, comprising a main tube for gripping by the user, as
well as two ends each equipped with a rod carrying an endpiece
intended to bear laterally respectively against one side jamb of
said frame.
[0004] At least one of the rods is rotatably mounted through a
system for adjusting the longitudinal dimension of the bar, in
order to be able to adapt it to the transverse spacing separating
the two side jambs of the door. In particular, the system may
comprise a threaded bore formed in the end of the tube, as well as
a tapping which extends longitudinally over at least one portion of
the rod to enable screwing thereof into said end, according to the
desired length.
[0005] During the user of the bar, the repeated movements of the
hands of the user on the main tube may cause its relative rotation
with respect to the rod(s), which could lead to a loosening of said
bar and thus risk the fall of the user.
[0006] To limit this risk, the document CN-208 465 058 provides for
a bar with a length adjusting system which comprises a device for
blocking the rotation of the rod with respect to the main tube,
said device comprising a groove formed in the rod and a bushing
equipped with a lug which is disposed within said groove to guide
the translation of said bushing around said rod while preventing
their relative rotation.
[0007] In particular, this document provides for equipping the end
of the main tube with a collar whose internal wall is provided with
a plurality of angularly distributed rectangular recesses. Thus,
when the bushing is moved in translation towards the end of the
tube, the lug is engaged longitudinally into the recess that
coincides with the groove of the rod, in order to block the
relative rotation of said rod with respect to the tube.
[0008] This solution is not completely satisfactory, to the extent
that it turns out to be relatively complex to implement.
Furthermore, the arrangement of the blocking recesses inside the
main tube does not allow locating them easily, which makes the use
of the blocking device difficult, and does not allow guaranteeing
the safety of the user against the risk of loosening of the bar
during the practice of a physical training.
SUMMARY
[0009] The invention aims to perfect the prior art in particular by
providing a pull-up bar whose longitudinal dimension once adjusted
could be blocked simply and intuitively, in order to guarantee
optimum safety for the user against the risk of loosening of the
bar, and therefore of fall during the use of said bar.
[0010] To this end, the invention provides a bar intended for the
practice of a physical exercise, in particular a pull-up type
muscular exercise, said bar comprising a main tube for gripping by
the user, said tube having two ends each equipped with a rod
carrying an endpiece for holding said bar between two lateral
structures during the practice, at least one of said rods being
rotatably mounted through a system for adjusting the longitudinal
dimension of said bar, said system comprising a device for blocking
the rotation of the rod with respect to the main tube, said device
comprising a groove formed in the rod and a bushing equipped with a
lug which is disposed within said groove to the translation of said
bushing around said rod while preventing their relative rotation,
the blocking device further comprising at least one notch formed
longitudinally in the end of the main tube, said notch being
arranged so as to selectively receive the lug by translation of the
bushing towards a rotational blocking position of said bushing with
respect to said tube.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Other particularities and advantages of the invention will
appear in the following description, made with reference to the
appended figures, wherein:
[0012] FIG. 1a and FIG. 1b represent, in perspective, an end of a
bar according to an embodiment of the invention, the rotational
blocking bushing being respectively assembled (FIG. 1a) and
disassembled (FIG. 1b) from the adjustment rod;
[0013] FIG. 2a, FIG. 2b and FIG. 2c represent the bushing of FIGS.
1a and 1b, respectively in front view (FIG. 2a), in bottom view
(FIG. 2b) and in section according to the plane A-A of FIG. 2a
(FIG. 2c);
[0014] FIG. 3 represents the bushing of the previous figures
according to two sectional planes, respectively the planes B-B and
C-C of FIG. 2c.
DETAILED DESCRIPTION
[0015] With reference to these figures, a bar intended for the
practice of a physical exercise, in particular a pull-up type
muscular exercise, is described hereinbelow.
[0016] The bar comprises a main tube 1 for gripping by the user,
said tube having two ends 2 each equipped with a rod 3 carrying an
endpiece 4 for holding said bar between two lateral structures, for
example the side jambs of a door frame, when practicing such an
exercise.
[0017] The main tube 1 may comprise a coating 5 which covers at
least partially its periphery, said coating having an external
surface 5a arranged so as to form an area for gripping by the user.
In particular, the coating 5 may be made of foam or of an elastomer
material, in order to limit slipping of the hands of the user on
the main tube 1 when practicing an exercise.
[0018] Each end piece 4 has a surface 4a which extends in a plane
perpendicular to the longitudinal axis of the bar, and which is
intended to bear longitudinally against the lateral structure.
[0019] To allow setting the longitudinal dimension of the bar to
the spacing between the lateral structures, at least one rod 3 is
rotatably mounted through a system for adjusting said longitudinal
dimension. For example, such a system may comprise a threaded bore
formed in the end 2, as well as a tapping which extends
longitudinally over at least one front portion of the rod 3, in
order to enable screwing thereof into said end according to the
desired length.
[0020] Advantageously, the two rods 3 are rotatably mounted on the
corresponding end 2 of the main tube 1 through such an adjusting
system, said systems being arranged so as to enable a simultaneous
setting of the distances between each endpiece 4 and the end 2
opposite each other by a simple manual rotation of said tube around
its longitudinal axis.
[0021] Each of the adjusting systems has a device for blocking the
rotation of the rod 3 with respect to the main tube 1, said device
comprising a groove 6 formed in the rod and a bushing 7 equipped
with a lug 8 which is disposed within said groove so as to guide
the translation of said bushing around said rod while preventing
their relative rotation.
[0022] With reference to these figures, the bushing 7 has a slot 9
extending angularly, in particular so as to enable mounting thereof
around the rod 3, the lug 8 being formed diametrically opposite to
said slot.
[0023] In particular, as represented in FIGS. 2a and 3, the slot 9
extends on the bushing 7 according to an angular dimension a
comprised between 60.degree. and 120.degree., and in particular in
the range of 90.degree., which allows facilitating mounting thereof
and at the same time ensuring the radial holding thereof around the
rod 3.
[0024] The blocking device further comprises at least one notch 10
formed longitudinally in the end 2 of the main tube 1, said notch
being arranged so as to selectively receive the lug 8 by
translation of the bushing 7 towards a rotational blocking position
of said bushing with respect to said tube.
[0025] In particular, the notch 10 is formed through the end 2 of
the main tube 1, for example by cutting, the lug 8 in blocking
position being received in said notch. Thus, in particular when the
lug 8 extends radially inside the bushing 7, said bushing in
blocking position is arranged at least partially around the end
2.
[0026] Advantageously, the notch 10 is made so as to be visible
from the external periphery of the main tube 1, which enables the
user to locate it easily, and therefore blocking the relative
rotation of the tube 1 and of the rods 3 simply and reliably. Thus,
he can practice his exercises in complete safety, the risk of
loosening of the bar, and therefore the risk of fall, being
optimally reduced.
[0027] After having set the bar to the desired longitudinal
dimension, the user can lock it between the side jambs of the door
by arranging the grooves 6 of each rod 3 longitudinally opposite
the corresponding notch 10, then by making each bushing 7 slide so
as to engage the lugs 8 in said notches, which amounts to a simple
and intuitive gesture.
[0028] In particular, the blocking devices may comprise several
notches 10 spaced apart angularly on the corresponding tube end 2,
which allows providing a bar with several indexed options of
longitudinal dimensions, said options being adapted to different
standard dimensions of door frames.
[0029] In particular, each end 2 may comprise two notches spaced
apart angularly, in particular by an angle in the range of
180.degree., the corresponding lug 8 being intended to be
selectively engaged into one of said notches in the blocking
position, depending on the relative angular position of the rod 1
with respect to the tube 1.
[0030] In the represented embodiment, the lug 8 extends radially
inside the bushing 7, which allows making the engagement thereof
into the notch 10 reliable, but also improving aesthetics.
[0031] The bushing 7 comprises a front portion 7a and a rear
portion 7b over which the lug 8 extends longitudinally while having
respectively front 8a and rear 8b portions, said rear portion being
arranged so as to ensure the translational guidance of the bushing
7 around the rod 3, said front portion being arranged so as be
engaged into a notch 10 and ensure the rotational blocking of the
bushing 7 with respect to the tube 1.
[0032] Advantageously, in addition to the rear portion 8b, the
front portion 8a of the lug 8 is disposed in the groove 6, which
allows improving the translational guidance of the bushing 7 on the
rod 3, but also facilitating the arrangement of said front portion
in the notch 10.
[0033] For this purpose, as represented in particular in FIG. 2c,
the lug 8 has a free edge 11 which extends longitudinally along an
internal diameter D from the front portion 8a towards the rear
portion 8b, as well as a significant overall longitudinal dimension
comprised between 70% and 90% of the overall longitudinal dimension
of the bushing 7.
[0034] In the represented embodiment, the front portion 7a of the
bushing 7 further has an internal diameter D1 which is larger than
the internal diameter D2 of the rear portion 7b. In particular, the
internal diameter D1 is arranged so as to enable the front portion
7a to be disposed around the tube end 2 in the blocking
position.
[0035] The internal diameter D1 of the front portion 7a forms a
reduced clearance with the external diameter of the tube end 2,
which allows facilitating the engagement and the disengagement of
the lug 8 into the notch 10.
[0036] Similarly, the internal diameter D2 of the rear portion 7b
forms a reduced clearance with the external diameter of the rod 3,
which allows facilitating the translational guidance of said
bushing around said rod.
[0037] Moreover, the front 7a and rear 7b portions are linked in
the longitudinal direction by a connection fillet 7c, said fillet
having an internal surface 12 arranged so as to abut longitudinally
against the free edge 13 of the end 2 in the blocking position.
* * * * *