U.S. patent application number 14/122302 was filed with the patent office on 2014-12-04 for portable fitness apparatus.
This patent application is currently assigned to INTELECT B.V.. The applicant listed for this patent is R.J.J. BOEKEMA HOLDING & MANAGEMENT B.V.. Invention is credited to Robbert Jacobus Johannes Boekema.
Application Number | 20140357457 14/122302 |
Document ID | / |
Family ID | 45852658 |
Filed Date | 2014-12-04 |
United States Patent
Application |
20140357457 |
Kind Code |
A1 |
Boekema; Robbert Jacobus
Johannes |
December 4, 2014 |
Portable Fitness Apparatus
Abstract
Portable mobile fitness apparatus for the performance of a
training exercise by a person. The fitness apparatus has a
disc-shaped resistance apparatus having a winding device inside a
housing. With the winding device, a line can be wound onto a
winding element. The winding device is coupled by means of a
one-way bearing to a resistance unit, wherein the resistance unit
serves to generate a training resistance. As a result of the
one-way bearing, the winding element has a freewheel in a first
rotational direction and the winding element meets a resistance in
an opposite, second rotational direction corresponding to the
unwinding of the winding element.
Inventors: |
Boekema; Robbert Jacobus
Johannes; (Apeldoorn, NL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
R.J.J. BOEKEMA HOLDING & MANAGEMENT B.V. |
Apeldoorn |
|
NL |
|
|
Assignee: |
INTELECT B.V.
Apeldoorn
NL
|
Family ID: |
45852658 |
Appl. No.: |
14/122302 |
Filed: |
February 20, 2012 |
PCT Filed: |
February 20, 2012 |
PCT NO: |
PCT/NL2012/050097 |
371 Date: |
July 18, 2014 |
Current U.S.
Class: |
482/124 |
Current CPC
Class: |
A63B 23/1209 20130101;
A63B 21/153 20130101; A63B 23/03575 20130101; A63B 23/12 20130101;
A63B 21/157 20130101; A63B 21/4025 20151001; A63B 21/00069
20130101; A63B 21/0051 20130101; A63B 21/154 20130101; A63B 21/015
20130101; A63B 21/4013 20151001; A63B 21/4009 20151001; A63B
23/03541 20130101; A63B 21/4043 20151001 |
Class at
Publication: |
482/124 |
International
Class: |
A63B 21/00 20060101
A63B021/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 31, 2011 |
NL |
2006872 |
Claims
1. Fitness apparatus (1) for the performance of a training exercise
by a person (27), the fitness apparatus comprising at least one
resistance apparatus (7) for providing a training resistance,
wherein the resistance apparatus (7) comprises a housing (9) for
the accommodation of a winding device for the winding up and
unwinding of a flexible element (17), wherein the winding device
comprises a winding element, which winding element is mounted
rotatably about a shaft (5) of the housing (9) and is connected by
means of a leaf spring (62) to the housing (9) for the
back-rotation of the winding element, wherein the winding element
comprises a winding surface for the winding up and unwinding of the
flexible element (17), wherein the flexible element (17) has a
first end, which is connected to the winding element and extends
through an opening (93) of the housing (9), and has a second end,
which is connected to a handle (19) for holding the second end,
characterized in that the winding element (61) is rotationally
supported on the shaft (5) by a one-way bearing (63), wherein a
resistance unit (70) for the generation of a training resistance is
connected to the one-way bearing (63), such that the winding
element (61) has a freewheel in a first rotational direction
corresponding to a back-rotation of the winding element (61) and
meets a resistance in an opposite, second rotational direction
corresponding to the unwinding of the winding element (61).
2. Fitness apparatus (1) according to claim 1, wherein the one-way
bearing (63) comprises an internal bearing part (631) and an
external bearing part (632), wherein the external bearing part
(632) is fixedly connected to the winding element (61) and wherein
the internal bearing part is connected rotatably about the centre
axis, wherein the resistance unit (70) is a friction resistance
unit, wherein the internal bearing part (631) is connected to a
resistance plate (71) of the resistance unit, wherein the
resistance unit (70) has a pressure plate (72) for the braking of
the resistance plate (71), which pressure plate (72) is
non-rotatably connected to the housing (9).
3. Fitness apparatus (1) according to claim 1, wherein the pressure
plate (72), with the aid of an adjusting knob (21), is movable in
an axial direction with respect to the shaft (5) for the adjustment
of the training resistance.
4. Fitness apparatus (1) according to claim 1, wherein the one-way
bearing (63) comprises an internal bearing part (631) and an
external bearing part (632), wherein the internal bearing part
(631) is fixedly connected to the winding element (61) and wherein
the internal bearing part (631) is connected rotatably about the
shaft (5), wherein the resistance unit (70) is an eddy current
resistance unit, wherein the resistance unit (70) comprises a
resistance rotor (71) and at least one permanent magnet (72),
wherein the external bearing component (632) is fixedly connected
to the resistance rotor (71), wherein the permanent magnet is
positioned next to the resistance rotor (71), such that a rotor
part of the rotor moves, in operation, through a magnetic
field.
5. Fitness apparatus (1) according to claim 4, wherein a training
resistance to be created is adjustable with the eddy current
resistance unit, with the use of an adjusting knob (21), by
adjusting the position of the magnet (72) with respect to the
resistance rotor (71), such that a size of the rotor part which
moves through the magnetic field varies.
6. Fitness apparatus (1) according to claim 1, wherein the fitness
apparatus can be worn by a person on the body during the
performance of a training exercise, wherein the fitness apparatus
has a weight of no more than 2500 grams, such that the fitness
apparatus is manageable by the person during the performance of a
training exercise.
7. Fitness apparatus (1) according to claim 1, comprising a body
fastening means (3) for fastening the resistance apparatus (7) to
the body of a person, and wherein an opening (93) of the housing of
the resistance apparatus (7) is rotatably connected to the body
fastening means (3).
8. Fitness apparatus (1) according to claim 7, wherein the
resistance apparatus (17) is slidably connected to the body
fastening means (3) for the displacement of the resistance
apparatus from a first position into a second position on the body
fastening means (3).
9. Fitness apparatus (1) according to claim 7, wherein the body
fastening means (3) is a hip belt, wherein the hip belt is provided
with at least one trunk strap for a longitudinal fastening of the
hip belt to a trunk of a person in order to oppose an upward or
downward movement of the hip belt during a training exercise.
10. Fitness apparatus (1) according to claim 1, wherein the fitness
apparatus (1) further comprises at least one ankle strap (23), as
well as a diverting element (25), connected to the ankle strap
(23), for the diversion of the flexible element (17).
11. Fitness apparatus (1) according to claim 10, wherein the
diverting element (25) is formed by a hook-shaped element.
12. Fitness apparatus (1) according to claim 10, wherein the ankle
strap (23) is provided with a foot strap.
13. Fitness apparatus (1) according to claim 1, wherein the handle
(19) is looped.
14. Method for the performance of a training exercise by a person,
comprising the following steps: providing fitness apparatus
comprising at least one resistance apparatus (7) for providing a
training resistance, wherein the resistance apparatus (7) comprises
a housing (9) for the accommodation of a winding device for the
winding up and unwinding of a flexible element (17), wherein the
winding device comprises a winding element, which winding element
is mounted rotatably about a shaft (5) of the housing (9) and is
connected by means of a leaf spring (62) to the housing (9) for the
back-rotation of the winding element, wherein the winding element
comprises a winding surface for the winding up and unwinding of the
flexible element (17), wherein the flexible element (17) has a
first end, which is connected to the winding element and extends
through an opening (93) of the housing (9), and has a second end,
which is connected to a handle (19) for holding the second end,
characterized in that the winding element (61) is rotationally
supported on the shaft (5) by a one-way bearing (63), wherein a
resistance unit (70) for the generation of a training resistance is
connected to the one-way bearing (63), such that the winding
element (61) has a freewheel in a first rotational direction
corresponding to a back-rotation of the winding element (61) and
meets a resistance in an opposite, second rotational direction
corresponding to the unwinding of the winding element (61); setting
a training resistance with the fitness apparatus; and performing
the training exercise by applying a tensile force to a flexible
element of the fitness apparatus.
15. Method according to claim 14, further comprising at least one
of the following steps: fastening the fitness apparatus to the body
of the person; fastening a resistance apparatus of the fitness
apparatus with a hip belt to the body of a person; and fastening an
ankle strap with a diverting element to an ankle of the person.
Description
Field of the Invention
[0001] The present invention relates to a fitness apparatus, in
particular to a fitness apparatus which can be worn by a person on
the body.
BACKGROUND OF THE INVENTION
[0002] A portable fitness apparatus of this type is known from
WO97/34662. The fitness apparatus has a hip belt, which is provided
with two resistance apparatuses. Each resistance apparatus is
provided with a cord having a handle. A training exercise can be
performed by pulling on the cord, whereupon the resistance
apparatus generates a training resistance. In the case of the known
fitness apparatus, it is intended to deliver a constant resistance
during the performance of a training exercise.
[0003] The training resistance which is created by the resistance
apparatus is delivered by a coiled leaf spring inside the housing
of the resistance apparatus. By pulling on the flexible element,
the leaf spring is made to uncoil and thereupon generate a training
resistance. If so desired, it is possible to incrementally increase
the training resistance by coupling to the outer side of the
housing of the resistance apparatus an additional resistance
apparatus. The additional resistance apparatus is comparable with
the first resistance apparatus in its configuration and is also
provided with a coiled leaf spring which delivers the additional
resistance.
[0004] A problem with the known portable fitness apparatus is that
the performance of training exercises is limited. The number of
training exercises which can be performed with the fitness
apparatus is also limited. Moreover, the ease of use of the
resistance apparatus leaves something to be desired. The coupling
of additional resistance apparatuses in order to increase the
training resistance is regarded as very awkward. Awkward because
the portable fitness apparatus should be specifically meant to
provide more freedom for a training location. The lugging of
additional resistance apparatuses over a training circuit is felt
to be a hindrance, for example. Moreover, the additional resistance
apparatuses hamper the freedom of movement during a training
exercise. During a training exercise, the arms or hands can collide
with the additional resistance apparatuses.
SUMMARY OF INVENTION EMBODIMENTS
[0005] The object of the present invention is to at least partially
overcome at least one of the abovementioned drawbacks, or to
provide a usable alternative. In particular, the object of the
invention is to provide a fitness apparatus having a resistance
apparatus which is compact and can deliver a constant training
resistance.
[0006] The invention provides a fitness apparatus for the
performance of a training exercise by a person. The fitness
apparatus comprises at least one resistance apparatus for the
creation of training resistance. The resistance apparatus comprises
a housing for the accommodation of a winding device. The winding
device is arranged to wind up and unwind a flexible element. In
particular, the flexible element is a line, also referred to as a
rope or a cord. Flexible here denotes that the flexible element is
pliable and bendable in the transverse direction. Preferably, the
flexible element is non-elastic and substantially inextensible,
such that the flexible element helps to procure a constant
resistance. The winding device comprises a winding element having a
winding surface for the winding up and unwinding of the flexible
element. The flexible element has a first end, which is connected
to the winding element. The flexible element extends from the
winding element inside the housing outwards through an opening of
the housing. The flexible element has a second end, which is
connected to a handle for the securement of the second end. The
winding element is mounted rotatably about a centre axis of the
housing. By means of a coiled leaf spring, the winding element is
pretensioned, such that the winding element back-rotates when the
flexible element is unwound and an applied tensile force decreases.
By the back-rotation of the winding element, the flexible element
is rewound.
[0007] The fitness apparatus according to the invention provides an
improvement by virtue of the fact that the winding element is
rotationally supported on the centre axis by a one-way bearing. A
one-way bearing is also referred to as a freewheel or freewheel
bearing. A resistance unit for the generation of a training
resistance is connected to the one-way bearing, such that the
winding element has a freewheel in a first rotational direction
corresponding to the back-rotation of the winding element, and thus
the winding up of the flexible element, but meets a resistance in
an opposite, second rotational direction corresponding to the
unwinding of the winding element and the extension of the flexible
element.
[0008] In the first place, the fitness apparatus according to the
invention offers the advantage that the training resistance is now
no longer determined by just the coiled leaf spring, but that a
resistance unit is provided for the creation of the training
resistance. The leaf spring can now be dimensioned so light that it
generates just enough tensile force to wind up the flexible
element, but the leaf spring no longer needs to be dimensioned so
heavy that the leaf spring delivers sufficient training resistance
for a training exercise.
[0009] Advantageously, the resistance unit is coupled by means of
the one-way bearing to the winding element, so that the winding up
of the flexible element is not hampered by a resistance delivered
by the resistance unit. Through the use of the one-way bearing, an
automatic decoupling of the resistance unit with the winding
element is provided when the winding element rotates in a direction
in which the flexible element is wound up.
[0010] Another important advantage is that the fitness apparatus
according to the invention can deliver a substantially constant
training resistance over a substantially total travel of the
flexible element. A non-elastic, inextensible flexible element
contributes to a constant training resistance, and the used
resistance unit can also, for instance on the basis of friction,
contribute to the constant training resistance over the
substantially total travel of the flexible element.
[0011] In one embodiment of the fitness apparatus according to the
invention, the flexible element comprises a polyethylene-based
synthetic fibre, in particular UHMWPE (ultra high molecular weight
polyethylene), more particularly a line made of Dyneema material or
an equivalent material having comparable strength properties. This
material can be used, because the material has a high tensile
strength and a low specific gravity. Dyneema is also resistant to
friction, sunlight and micro-organisms and the material does not
chafe or cut, which makes the use of Dyneema as the flexible
element in the fitness apparatus according to the invention very
suitable.
[0012] In one embodiment of the fitness apparatus according to the
invention, the one-way bearing has an internal bearing part and an
external bearing part. The external bearing part is fixedly
connected to the winding element. The internal bearing part is
connected rotatably about the centre axis of the housing.
[0013] In one embodiment of the fitness apparatus according to the
invention, the resistance unit is a friction resistance unit for
the friction-based creation of a resistance. The friction
resistance unit is connected by the one-way bearing to the winding
device. In one embodiment, the internal bearing part of the one-way
bearing is connected to a resistance plate of the friction
resistance unit, wherein the friction resistance unit also has a
pressure plate for the braking of the resistance plate. The
pressure plate is here connected in a rotationally rigid and
therefore non-rotatable manner to the housing. The pressure plate
is positioned opposite the resistance plate, such that the pressure
plate can be pressed against the resistance plate to create a
friction. Advantageously, the used friction resistance unit
provides a simple configuration which can be integrated within the
housing, whereby the housing can nevertheless remain relatively
compact. Advantageously, the friction resistance unit can be
steplessly adjusted. Advantageously, the friction resistance unit
can deliver a constant training resistance over the total travel of
the flexible element.
[0014] In one embodiment of the fitness apparatus according to the
invention, the pressure plate, with the aid of an adjusting knob,
is movable in the axial direction with respect to the centre axis
of the housing for the adjustment of the training resistance. The
movement of the pressure plate in the axial direction enables the
pressure plate to press more tightly or more loosely against the
resistance plate of the friction resistance unit, whereby the
training resistance to be created is adjustable. In particular, a
training resistance can be adjusted within a range of at least 0.25
kg to no more than 25 kg. Through the use of the friction
resistance unit, the training resistance can be kept substantially
constant. By a constant training resistance is here meant that a
user in practice perceives a set training resistance as constant if
the training resistance varies by no more than 0.5 kg over a travel
of about 50 cm of the flexible element, given a set training
resistance of at least 2 kg.
[0015] In particular, a brake lining is provided between the
resistance plate and the pressure plate of the resistance unit. The
brake lining is, for example, cork. The brake lining can be
removably fitted, such that a user, after excessive wearing of the
brake lining, can replace the brake lining
[0016] In one embodiment of the fitness apparatus according to the
invention, the resistance unit is an eddy current resistance unit,
also referred to as a magnetic resistance unit. The eddy current
resistance unit comprises a resistance rotor and at least one
permanent magnet. The resistance rotor is rotatably mounted inside
the housing of the resistance apparatus. A rotor part of the
resistance rotor moves through a magnetic field of the at least one
permanent magnet. The at least one permanent magnet is positioned
next to the resistance rotor, such that the rotor part of the
resistance rotor moves, in operation, through the magnetic
field.
[0017] The fitness apparatus with eddy current resistance unit has
the advantage that the creation of the training resistance occurs
contactlessly. The eddy current resistance unit has no wearing
components, which increases the working life of the fitness
apparatus. Advantageously, the eddy current resistance unit can be
steplessly adjusted. Moreover, the eddy current resistance unit can
provide a constant training resistance over the total travel of the
flexible element.
[0018] In one embodiment of the fitness apparatus according to the
invention, a training resistance to be created is adjustable by the
eddy current resistance unit. The training resistance can be
adjusted with an adjusting knob by changing the position of the at
least one permanent magnet with respect to the resistance rotor. By
adjusting the position of the magnet, a greater or lesser rotor
part of the resistance rotor will move through the magnetic field,
so that the training resistance is thus adjustable.
[0019] In one embodiment of the fitness apparatus according to the
invention, the fitness apparatus can be worn by a person. The
fitness apparatus can, in particular, be worn on the body during
the performance of a training exercise, for example during a
running exercise. The fitness apparatus is manageable and has a
weight of no more than 2500 grams, in particular no more than 1800
grams, more particularly no more than 1000 grams. In particular,
the resistance apparatus has a weight of at least 500 grams and no
more than 2500 grams. The resistance apparatus can be of
lightweight configuration if the maximally desired resistance
setting of, for example, no more than 5 kg remains relatively low,
or can have a heavier embodiment if the maximally desired
resistance setting needs to be relatively high, for example at
least 10 kg.
[0020] Preferably, the housing of the resistance apparatus is
disc-shaped. In one embodiment of the fitness apparatus according
to the invention, the resistance apparatus has a housing having a
relatively limited width. The housing of the resistance apparatus
has a maximum width of no more than 5 cm, preferably no more than 3
cm. The housing of the resistance apparatus is hence scarcely a
hindrance to the freedom of movement of a person.
[0021] The fitness apparatus can preferably be fastened to the body
of a person. The fitness apparatus preferably has a body fastening
means for providing a fastening of the fitness apparatus onto the
body of a person. In one embodiment of the fitness apparatus
according to the invention, the fitness apparatus comprises a hip
belt for fastening at least one resistance apparatus to a hip of a
person. Preferably, the fitness apparatus comprises two resistance
apparatuses, which are connected to the body fastening means. In
particular, with the two resistance apparatuses, the left and right
limbs can respectively be trained.
[0022] In one embodiment of the fitness apparatus according to the
invention, the opening of the housing for the outward feed-through
of the flexible element, the so-called line passage, is mounted
rotatably with respect to the body fastening means. Advantageously,
the opening can hereby be directed during a training exercise in
the direction in which the flexible element is extended by the
person. Preferably, the opening of the housing can rotate over a
rotation travel, but, further preferably, over at least a complete
revolution, with respect to the body fastening means. Hence the
opening must form no obstruction during the performance of the
training exercise. In particular, the housing of the resistance
apparatus is rotatably connected to the body fastening means, such
that the opening of the housing can rotate during a training
exercise jointly with the movements of the flexible element. In
particular, the resistance apparatus is mounted rotatable about a
rotational axis, the centre line of which coincides with that of
the centre axis over which the winding element is rotatable.
[0023] In one embodiment of the fitness apparatus according to the
invention, the resistance apparatus is slidably connected to the
body fastening means. The resistance apparatus is slidable over a
certain travel in translation motion. The resistance apparatus can
be displaceable, for example, over a travel of at least 5 cm, in
particular at least 10 cm, but preferably at least 15 cm. The
resistance apparatus is displaceable with respect to the body
fastening means from a first position into a second position. The
body fastening means is, for example, a hip belt. The resistance
apparatus is displaceable in a longitudinal direction of the hip
belt. The resistance apparatus is displaceable from a hip position
as the first position into a buttock position as the second
position. The fact that the resistance apparatus is displaceable
with respect to the body fastening means can prevent the resistance
apparatus from forming an obstacle to a movement during a training
exercise. In addition, more forms of training exercises can also be
performed. In a training exercise, a training resistance can be
generated, for example, over a longer portion of a travel of an arm
movement.
[0024] In one embodiment of the fitness apparatus according to the
invention, the body fastening means is a hip belt. The hip belt is
further provided with at least one trunk strap for fastening of the
hip belt to a trunk of a person. The trunk strap can be fastened
over the top of the shoulders or underneath through between the
legs of the person. An upward or downward movement of the hip belt
during a training exercise can hence be opposed.
[0025] In one particular embodiment of the fitness apparatus
according to the invention, the body fastening means is a hip belt,
wherein the hip belt is realized as a trapeze. Such a trapeze is
known, for example, in wind surfing. The trapeze comprises two
trunk straps for fastening underneath the hip belt to the trunk of
a person. The two trunk straps can be passed between the legs and
fixed to the hip belt.
[0026] In one embodiment of the fitness apparatus according to the
invention, the fitness apparatus comprises at least one ankle
strap. The ankle strap can be fastened to an ankle of a person. The
ankle strap is provided with a diverting element for the diversion
of the flexible element. In particular, the diverting element is
hook-shaped. The hook-shaped diverting element offers the advantage
that the flexible element can be quickly fastened to the ankle
strap. The diverting element has a hook eye for the feed-through of
the flexible element. Preferably, the hook eye is positioned at a
distance of at least 5 mm, in particular at least 10 mm, but
preferably at a distance of at least 20 mm from an outer side of
the ankle strap. Advantageously, the flexible element is fed
through at such a distance from the ankle strap that the flexible
element during a training exercise remains substantially free from
contact with the body of a person. In one embodiment the hook eye
can be open, but preferably the hook eye is closable with a
hook-closing clip such that a fed-through flexible element is
detained in the hook eye. The flexible element can hereby be
prevented from coming loose from the diverting element during the
performance of a training exercise.
[0027] In an alternative embodiment of the fitness apparatus
according to the invention, the ankle strap can comprise a
diverting pulley for the guidance of the flexible element. The
diverting pulley is rotatably connected to the ankle strap.
[0028] In one embodiment of the fitness apparatus according to the
invention, the handle at the end of the flexible element is looped.
Preferably, the handle is flexible. The looped handle can be
produced, for example, from a fabric strip. Advantageously, the
number of possible training exercises is increased by the use of
the looped handle. During a training exercise, the looped handle
can be slipped, for example, around the housing of the resistance
apparatus.
[0029] The flexible element can hence extend, for example, from the
housing to the ankle strap and back again to the housing of the
resistance apparatus. The looped handle also makes a simple foot
connection possible, since a foot can be placed easily and quickly
into the loop.
[0030] In one embodiment of the fitness apparatus according to the
invention, the flexible element has a length of at least 2 m,
preferably at least 4 m. As a result of the relatively long length
of the flexible element, the fitness apparatus is suitable for tall
people. A further advantage is that the relatively long length of
the flexible element increases the number of training exercises,
for example since training exercises in which the flexible element
is double-wound are also possible.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] The invention will be explained in greater detail below with
reference to the appended drawings. The drawings form a practical
embodiment of the invention, which should not be regarded in a
limiting sense. Specific detailed characteristics can also be
viewed separately from the illustrative embodiment, in a general
sense, as characteristic of the invention, wherein:
[0032] FIG. 1 shows a perspective view of a person with fitness
apparatus according to the invention;
[0033] FIG. 2A shows a perspective view of the fitness apparatus
with hip belt and resistance apparatus;
[0034] FIG. 2B shows a perspective view of a person with fitness
apparatus, wherein the hip belt is realized as a trapeze;
[0035] FIG. 3A shows a perspective view of an ankle strap, with
diverting pulley, of the fitness apparatus according to the
invention;
[0036] FIG. 3B shows a perspective view of an ankle strap,
inclusive of hook and foot strap, of the fitness apparatus
according to the invention;
[0037] FIGS. 4A-D show partially cut-away perspective views of a
resistance apparatus with friction resistance unit; and
[0038] FIGS. 5A-D show partially cut-away perspective views of a
resistance apparatus having a magnetic resistance unit.
DETAILED DESCRIPTION
[0039] In the figures, consistent reference numerals are used for
similar, identical or functionally identical components of a
fitness apparatus 1 according to the invention.
[0040] FIG. 1 shows a person 27 with the fitness apparatus 1 during
a training exercise. The fitness apparatus 1 is portable and
fastened to the body of the person 27. The fitness apparatus 1 has
a body fastening means 3, which is here in the form of a hip belt.
The hip belt 3 is fastened at the height of the hip of the person
27. The fitness apparatus 1 comprises a resistance apparatus 7,
which is connected to the body fastening means 3. The resistance
apparatus 7 has a housing with a winding device therein. The
winding device serves to wind up and unwind a flexible element 17.
The person 27 holds a distal end of the flexible element 17 tightly
in the hand. The flexible element 17 has a proximal end connected
to the winding device of the resistance apparatus 7. The fitness
apparatus 1 further comprises an ankle strap 23 having a diverting
element 25. As a result of the ankle strap with diverting pulley, a
large variety of training exercises can be performed with this
fitness apparatus. The diverting element 25 is here a diverting
pulley. The flexible element 17 extends during use from the
resistance apparatus 7, wherein the flexible element 17 is guided
along the diverting element 25 and from there to a handle 19 held
tight by the user.
[0041] FIG. 2A shows the body fastening means 3 with resistance
apparatus 7 in further detail in a perspective view. The body
fastening means 3 comprises a belt, in particular a hip belt. The
belt can be closed with a click joint. The belt is provided with a
pad, a support surface 31. The support surface 31 provides a local
widening on the belt, against which the resistance apparatus 7 can
rest.
[0042] The resistance apparatus 7 is mounted rotatably with respect
to the body fastening means 3. The resistance apparatus 7 is
connected to the hip belt 3 rotatably about a centre line 5. The
resistance apparatus 7 has a housing 9. The housing 9 accommodates
the winding device for winding up and unwinding the flexible
element 17. The housing 9 is disc-shaped. The housing 9 has two
parallel side walls 91, which are connected to each other by a
peripheral wall 92. The peripheral wall 92 is circular. In the
peripheral wall 92 is an opening 93, a line passage, provided for
the feed-through of the flexible element 17 outwards from the
winding device. The flexible element 17 is here a cord.
[0043] On the distal end of the flexible element is provided a
handle 19, wherein the handle is bar-shaped. The flexible element
17 is fastened centrally to the handle 19 in a middle region of the
handle 19.
[0044] The flexible element 17 can be pulled counter to a spring
force out of the housing 9, whereupon it meets resistance. When the
handle is released, the flexible element is retracted into the
housing and wound up by a spring, in particular a coiled leaf
spring. As a result of the spring, the flexible element 17
back-rotates.
[0045] The resistance apparatus 7 is fastened to the hip belt 3 in
a freely rotatable manner with respect to the hip belt 3. If the
flexible element 17 is pulled while the flexible element is coming
out of the opening 93 at other than right angles to the peripheral
wall 92, the tensile force in the flexible element will ensure that
the resistance apparatus 7 is rotated until the flexible element
leaves the resistance apparatus at right angles to the peripheral
wall, as in FIG. 2A.
[0046] As will be further explained below with reference to FIGS. 4
and 5, the resistance apparatus 7 has a winding device positioned
inside the housing 9. This winding device has a disc-shaped winding
element, onto which the flexible element 17 is wound. The winding
element is rotatable counter to a spring force and is rotatable
about a centre axis. The resistance apparatus is rotatable about a
rotational axis, the centre line 5 of which coincides with that of
the centre axis.
[0047] Pulling on the flexible element 17 causes the winding
element to revolve and the flexible element to unwind from the
winding device. By means of an adjusting knob 21, here a rotary
knob, the size of the resistance which the winding element meets as
it revolves in the housing 9 can be adjusted.
[0048] As shown in FIG. 2A, the resistance apparatus 7 is mounted
displaceably with respect to the body fastening means 3. The
resistance apparatus 7 is displaceable in a longitudinal direction
of the body fastening means 3. The resistance apparatus 7 is
displaceable from a first position into a second position on the
body fastening means 3. In the first position, the resistance
apparatus is positioned, for example, above the hip of a person 27.
In the second position, the resistance apparatus 7 is displaced
rearwards and is positioned above a buttock of a person 27.
[0049] FIG. 2B shows an alternative embodiment of the fitness
apparatus 1, wherein the body fastening means 3 is realized as a
trapeze. The trapeze is provided with a girdle, a hip belt, with
two trunk straps. The trunk straps should be fastened around the
thighs. During use, the ends of the trunk strap are fastened to the
girdle and extend underneath the trunk of a person. The trunk
straps prevent the body fastening means 3 from being able to move
upwards during a training exercise wherein a tensile force is
applied in the upward direction.
[0050] FIG. 2B further shows that the fitness apparatus 1 comprises
two resistance apparatuses 7. During use, a first resistance
apparatus is positioned on a left side of a person and a second
resistance apparatus on a right side of a person.
[0051] In FIG. 3A, an ankle strap, with a diverting pulley 25
thereon, of the fitness apparatus is represented. The diverting
pulley 25 is rotatably fastened to the ankle strap 23. In FIG. 3B
is shown an ankle strap of the fitness apparatus 1, wherein the
ankle strap is further provided with a foot strap 24. During use,
the ankle strap should be slipped around the ankle and the foot
strap 24 should extend through beneath the foot. The foot strap
serves to absorb upwardly directed forces during a training
exercise. The ankle strap is further provided with a diverting
element 25, which is here of hook-shaped configuration. The
hook-shaped diverting element 25 has an open hook eye for receiving
the flexible element 17. The hook eye is positioned at a distance
from an outer surface of the ankle strap 23 in order to prevent the
flexible element from coming into contact with a leg of a person
during a training exercise. In particular, the distance from the
centre of the hook eye to the outer surface of the ankle strap is
at least 20 mm.
[0052] FIGS. 4A-4D show a cut-away perspective view of the
resistance apparatus 7 in cross section. The resistance apparatus 7
has a disc-shaped housing 9. The housing 9 has a limited size with
a maximum outer diameter of no more than 20 cm, preferably no more
than 15 cm, whereby the resistance apparatus 7 is manageable and
portable and can be easily transported on the body by a person. The
housing is formed from two mutually opposing housing parts, so that
the housing can be produced by injection moulding. The housing 9
has a rear side and a front side. On the front side of the housing
9 is provided an adjusting knob 21. The assembled housing 9 has 2
parallel side walls 91, which determine a width of the housing. The
width of the housing 9 is relatively limited and has a maximum
width of no more than 5 cm, preferably no more than 3 cm. The
housing of the resistance apparatus 7 is hence scarcely a hindrance
to the freedom of movement of a person.
[0053] Inside the housing 9 is situated a shaft 5 for the
positioning of a winding device 6. The shaft 5 is centrally
positioned and runs parallel with the centre line of the housing 9.
The shaft 5 is fixedly connected at a proximal end to a rear side
of the housing 9 and extends to a front side van the housing 9. The
shaft 5 has a distal end. The adjusting knob 21 is fastened to the
distal end of the shaft 5.
[0054] The resistance apparatus 7 comprises a winding device 6
having a winding element 61. The winding element 61 is cylindrical.
The winding element 61 is shaped as a spool and has a winding
surface 611 for the winding of the flexible element 17. The winding
surface 611 is formed by an external shell surface. The winding
surface 611 is provided with side cheeks 612 for the detention of a
wound flexible element. The winding element 61 is positioned in the
housing 9 in a cylindrically shaped housing chamber 94 having a
peripheral wall 941. The side walls on either side of the winding
surface 611 connect to the peripheral wall 941 of the housing
chamber 94. In an assembly of the winding element 61 and the
housing 9, the peripheral wall of the housing chamber encloses a
wound flexible element 17. The risk of entanglement of the flexible
element is thereby substantially eliminated.
[0055] The winding element 61 is connected by means of a leaf
spring 62 to the housing 9. The leaf spring 62 is strip-shaped and
made of spring steel. The leaf spring 62 has an external end and an
internal end. The external end is connected to the winding element
61, whilst the internal end is connected to the housing 9 by a
spring bush 621. The leaf spring 62 is coiled up inside the housing
9.
[0056] The leaf spring 62 is positioned in a spring chamber 613 of
the winding element 61. The spring chamber 613 is cylindrical. The
leaf spring 62 is in a coiled state positioned in the spring
chamber 613 of the winding element 61. The spring chamber 613 is on
one side open for the reception of the leaf spring 62. The spring
chamber 613 is on an outer side enclosed by an external wall
section and on an inner side enclosed by an internal wall section.
The internal and external wall sections are cylindrical. The
winding surface 611 is provided on the external wall section.
[0057] The leaf spring 62 is fixedly connected by means of a spring
bush 621 to a rear side of the housing 9. The spring bush 621 has a
spring bush flange, which is connected to the housing 9. Here, the
spring bush 621 is connected by means of a bolt joint to the
housing 9. The spring bush 621 extends into the spring chamber
613.
[0058] The winding element 61 is supported on the shaft 5 by means
of a one-way bearing 63. The one-way bearing 63 is a freewheel
bearing. The one-way bearing 63 comprises an internal bearing part
631 and an external bearing part 632. The external bearing part 632
is connected by a bearing to the internal bearing part 631. The
external bearing part 632 is fixedly connected to the winding
element 61. The internal bearing part 631 is rotatably connected to
the shaft 5. The bearing is arranged such that the internal bearing
part is not engaged and hence freewheels in a first rotational
direction, but that the internal bearing part 631 is engaged and
hence co-rotates with the external bearing part 631 and the winding
element 61 in a second rotational direction.
[0059] The internal bearing part 631 is connected to a resistance
unit 70. The resistance unit 70 is a friction resistance unit, also
referred to as a friction brake. The resistance unit 70 comprises a
resistance plate 71. The resistance unit 70 further comprises a
pressure plate 72 cooperating with the resistance plate 71. In the
resistance unit 70, the resistance plate 71 is arranged such that
the resistance plate 71 is rotatable with respect to the pressure
plate 72. A resistance material 73, also referred to as a brake
lining, such as cork, is provided between the pressure plate 72 and
the resistance plate 71. The resistance material is a wearing
material. The resistance material provides a friction force when
the resistance plate 71 rotates with respect to the pressure plate
72. The generated friction force provides in the resistance
apparatus 7 the training resistance.
[0060] The internal bearing part 631 of the one-way bearing 63 has
on the front side of the housing 9 end face provided with the
resistance plate 71 of a resistance unit 70. The resistance plate
71 is integral with the internal bearing part 631. The resistance
plate 71 is formed by a flange on the end face of the internal
bearing part 631.
[0061] The pressure plate 72 is positioned opposite the resistance
plate 71. The pressure plate 72 is connected in a rotationally
rigid manner to the housing 9 by means of the shaft 5. The shaft 5
is provided with at least one flat edge in an outer surface. The
flat edge forms a locking mechanism for the pressure plate 72. The
fastening of the pressure plate 72 on the shaft 5 permits a
movement of the pressure plate 72 in the axial direction of the
shaft 5.
[0062] By means of the adjusting knob 21, the pressure plate 72 is
axially displaceable over the shaft 5 and, as such, can be pressed
more tightly or more loosely against the resistance plate 71. The
pressure plate 72 has an end pressure face, which can be pressed
against an end pressure face of the resistance plate 71. The
training resistance is hereby adjustable. Advantageously, the
adjustability requires hardly any space compared to a radial
engagement and the resistance apparatus can be compactly
configured. The adjusting knob 21 is centrally positioned on the
front side of the housing 9. Advantageously, the positioning of the
adjusting knob on the front side of the housing is ergonomically
accessible in the performance of a training exercise. The
resistance is created substantially by friction and only to a small
extent by the spring force. With the adjusting knob, the pressure
force, and thus the size of the resistance, can be continuously and
steplessly readjusted.
[0063] The adjusting knob 21 is connected by means of a screw joint
to the centre shaft 5. Turning of the adjusting knob 21 produces an
axial shift of the adjusting knob, such that the pressure plate 72
is also axially displaced and a resistance force is adjusted. The
one-way bearing 63 ensures that the set training resistance is only
transmitted to the flexible element 17 when the flexible element 17
unwinds from the winding element 61 and is pulled out of the
housing 9. The one-way bearing 63 is disconnected in an opposite
rotational direction, wherein the flexible element 17 is wound onto
the winding element 61. The resistance of the resistance unit 70 is
hence not present during winding up of the flexible element 17. In
the return movement, no frictional resistance is thus met and the
spring element, the leaf spring, can easily wind the flexible
element onto the spool. The leaf spring 62 can be designed light
enough for the leaf spring 62 to offer sufficient tensile force to
rapidly wind up the flexible element 17. Advantageously, the shown
configuration is compact, which is favourable for the mobility and
portability of the fitness apparatus.
[0064] FIGS. 4C and 4D further show a fastening plate 8 for a
rotatable fastening of the resistance apparatus 7 to a body
fastening means 3. The fastening plate 8 is circular. The fastening
plate 8 is connected to the housing 9. The rotatable fastening of
the resistance apparatus 7 ensures that the line passage of the
resistance apparatus 7 is at the same time aligned with a direction
of pull of the flexible element 17.
[0065] FIGS. 5A to 5D show an alternative embodiment of the
resistance apparatus 7 of the fitness apparatus.
[0066] FIG. 5A shows a perspective view of an outer side of the
resistance apparatus 7. The resistance apparatus 7 has a housing 9,
which is disc-shaped. The housing has two parallel side walls 91
and a peripheral wall 92. The housing 9 is substantially closed.
The housing has an opening 93, a line passage, for the feed-through
of the flexible element 17. On a front side, the housing 9 is
provided with an adjusting knob 21 for the adjustment of a training
resistance.
[0067] In FIGS. 5B-5D, cut-away perspective views of the resistance
apparatus 7 of the fitness apparatus are shown, wherein different
training resistances are set. The resistance apparatus 7 has a
resistance unit 70.
[0068] The resistance unit 70 comprises a resistance rotor 71. The
resistance rotor 71 is rotatably positioned inside the housing 9.
The resistance rotor 71 coupled to a winding element 61 by a
one-way bearing 63, such that the resistance rotor 71 has a
freewheel with respect to the winding element 61 in a first
rotational direction, wherein the winding element 61 winds up a
flexible element 17. The resistance rotor 71 co-rotates with the
winding element 61 in a second rotational direction, whereupon the
flexible element 17 unwinds from the winding element 61. The
one-way bearing 63 has an external bearing part 632, which is
integral with the winding element 61. The external bearing part 632
is provided with bearing cams 633 for engagement in a single
rotational direction on an internal bearing part of the one-way
bearing 63. The bearing cams 633 are evenly distributed over a
circular outer surface of the external bearing part 632.
[0069] The resistance unit 70 further comprises at least one
permanent magnet 72. The at least one permanent magnet 72 provides
a magnetic field. The resistance rotor 71 is mounted such that it
is rotatable through the magnetic field. The resistance rotor 71 is
positioned next to the at least one permanent magnet 72. An end
face of the resistance rotor 71 moves through the magnetic field.
When the resistance rotor 71 rotates through the magnetic field, a
magnetic resistance, serving as the training resistance, is
generated. The rotation of the resistance rotor 71 gives rise to
eddy current turbulences. The resistance unit 70 is also referred
to as a magnetic resistance unit or eddy current resistance
unit.
[0070] The training resistance can be adjusted by varying a size of
a rotor part of the resistance rotor 71 which moves through the
magnetic field. For this purpose, the at least one permanent magnet
72 is mounted such that it is radially displaceable with respect to
the resistance rotor 71. In FIG. 5B, a maximum training resistance
is set, wherein a maximum rotor part of the resistance rotor 71
moves through the magnetic field. In FIG. 5D, a minimum training
resistance is set by a radial displacement of the magnetic field,
and in FIG. 5C an intermediate training resistance is set.
[0071] The at least one permanent magnet 72 is positioned on a
lever 721. The lever 721 is hinged via a lever shaft 722 for the
displacement of the magnetic field over a radial travel. The lever
shaft 722 is mounted parallel with the shaft 5 of the resistance
apparatus 7. Between the lever 721 and the adjusting knob 21, a
transmission 22 is provided for the positioning of the lever 721,
and thus the permanent magnet 72. With the transmission 22, the
training resistance can be steplessly adjusted. Advantageously, the
shown configuration is compact.
[0072] In addition to the embodiments shown in the figures, many
variants are possible. Although the invention has been disclosed
with reference to particular embodiments, a person skilled in the
art, after having read the description, will wish to make changes
or modifications which are possible from a technical viewpoint, but
expressly do not fall outside the scope of protection of the
invention as defined in the appended claims. In particular, changes
can be made in relation to the disclosed embodiments, which changes
fall within the teaching of the invention without hereby departing
from the essence of the invention. The person skilled in the art
should understand that various modifications can be made and
elements can be replaced by equivalents, without hereby departing
from the essence of the invention. Thus the invention is not
limited to the disclosed embodiments included in the description,
but rather the invention will comprise all embodiments which fall
within the scope of protection as defined by the claims.
[0073] Thus, according to the invention, a mobile fitness
apparatus, which can be worn on the body for the performance of a
training exercise, is provided. The fitness apparatus according to
the invention has an improved facility for the provision of a
training resistance, comprising a coupling to a resistance unit by
means of a one-way bearing, whereby the fitness apparatus can be
realized in compact and lightweight configuration. Moreover, the
fitness apparatus according to the invention provides various
improvements, whereby the options for the performance of training
exercises are increased and can be executed better.
* * * * *