GB2585949A

GB2585949A - Exercise apparatus having counter rotating members

Info

Publication number: GB2585949A
Application number: GB1910740.8A
Authority: GB
Inventors: Mccann Matthew
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2021-01-27
Anticipated expiration: 2039-07-26
Also published as: GB2585949B; WO2021019219A1; GB201910740D0

Abstract

An exercise apparatus 10 comprising a first 11 and second 12 rotatable member with an outer side (111 fig 2a) that is engaged by an appendage, such as a hand, and an inner side (112 fig 2a) opposite where the inner sides are arranged adjacent to each other. The first and second members are coupled 13 to allow counter rotation. The members might be an elongate shape or circular discs. In an embodiment the outer sides might have one or more engagement or gripping features (113 fig 2a). In a further embodiment there is a rotational resistance means 14,15 which might be a torsion spring that is further biased to return the members to a default position. The resistance means might otherwise be provided via magnets. The apparatus might have means for straps to be attachable.

Description

EXERCISE APPARATUS HAVING COUNTER ROTATING MEMBERS

TECHNICAL FIELD

The present invention relates generally to exercise apparatus and, in particular, exercise apparatus including a pair of coupled, counter rotating members, e.g. discs.

BACKGROUND

Low-impact exercise is a form of exercise in which a lower amount of stress is placed upon joints of the body -such as knees, ankles and hips -than some other types of exercise. Low-impact exercise therefore allows people to still participate in exercise without putting excess weight on their joints. This can be particularly beneficial for the elderly, people recovering from joint injuries, or people suffering from longer-term joint problems or physical disabilities, for example. Low-impact exercise can therefore also be taken to include physiotherapy activities undertaken to develop certain muscles or when recovering from injuries.

Low-impact exercise can be used to improve endurance, strength, flexibility and/or balance. For example, low-impact endurance exercise can incorporate cardiovascular activities such as walking, swimming or cycling.

There are various activities to improve or maintain strength, flexibility and/or balance; however, there may be drawbacks associated with some of these. Stretching may be used to improve flexibility and range of movement; however, there is a risk of causing an injury, or exacerbating an existing injury, if stretching exercises are not performed correctly.

Many pieces of equipment are known for performing strengthening exercises. For instance, rowing machines or weight machines are popular for this purpose. However, some such equipment can suffer the drawback of being prohibitively expensive. Although many such pieces of equipment are often available at a gym, attending a gym may not be suitable some people, e.g. for cost or inaccessibility reasons. In addition, many such pieces of equipment are designed to work only one part of the body and therefore lack versatility.

It is also noted that many low-impact exercise activities are individual pursuits, which may not be preferable or suitable for certain people, particularly the elderly for instance.

It is against this background to which the present invention is set.

SUMMARY OF THE INVENTION

According to an aspect of the present invention there is provided exercise apparatus comprising first and second rotatable members or parts. Each rotatable member has an outer side for engaging a user's hand and an inner side opposite the outer side. The respective inner sides are arranged adjacent to each other. The first and second rotatable members are coupled to allow counter rotation of the first and second rotatable members about a rotation axis by the user hands. In particular, the coupling of the first and second rotatable members is understood to be mechanical coupling.

The user hands may be one person engaging each of their hands with a respective one of the rotatable members. Alternatively, the user hands may be two people each engaging one of their hands with a respective one of the rotatable members.

The rotation axis may be perpendicular to a plane of each of the first and second

rotatable members.

The rotation axis may be at a centre of each of the first and second rotatable members.

The first and second rotatable members may be elongate.

The first and second rotatable members may be circular discs.

The outer sides of the first and second rotatable members comprise one or more engagement features arranged to engage the user hands.

The apparatus may comprise a shaft arranged to couple the first and second rotatable members together.

Each of the first and second rotatable members may have a shaft hole. The shaft may have a threaded bore at each of its ends. The first and second rotatable members may be secured to the shaft by respective screws inserted through the shaft holes and into the threaded bores.

A length of the shaft may extend along the rotation axis.

The shaft may extend through the outer side of each of the first and second rotatable members. The shaft may be arranged to attach to a hand or foot grip or handle of the exercise apparatus.

The apparatus may comprise rotational resistance means arranged to resist counter rotation between the first and second rotatable members.

The rotational resistance means may be between the first and second rotatable members.

The rotational resistance means may comprise torsion spring means arranged to bias the first and second rotatable members to a default rotational position.

The torsion spring means may comprise a first torsion spring that engages with the first rotational member and the shaft. The torsion spring means may comprise a second torsion spring that engages with the second rotational member and the shaft.

The inner sides of the first and second rotatable members may each comprise an engagement feature arranged to engage with an outer end of the respective first and second torsion springs.

The shaft may comprise slots extending from each end of the shaft along its length. The slots may be arranged to engage with an inner end of the respective first and second torsion springs.

The shaft may comprise a separator flange extending perpendicular to the length of the shaft. The separator flange may be arranged to separate the first and second torsion springs.

The first and second rotatable members may each have a respective dyke extending from their inner sides. The respective dykes may be arranged to abut the first and second torsion springs to maintain their position.

The rotational resistance means may comprise magnetic means arranged to provide magnetic resistance in the rotational direction.

The magnetic means may comprise an arrangement of magnets disposed about the rotational axis on the inner side of the first and/or second rotatable member.

The first and second rotatable members may have respective rim formations at their inner sides. The respective rim formations may be adjacent to each other.

The first and second rotatable members may each include strap slots arranged to receive a strap therethrough to secure the user hands to the first and second rotatable members.

According to another aspect of the invention there is provided a kit of parts, comprising exercise apparatus as described above. The kit of parts comprises at least one hand strap for securing the user hands to the first and second rotatable members, and/or one or more handles for attaching to the first and second rotatable member.

According to another aspect of the invention there is provided a method of assembling exercise apparatus. The method comprises providing first and second rotatable members each having an outer side for engaging a user's hand and an inner side opposite the outer side. The method comprises arranging the respective inner sides of the first and second rotatable members adjacent to each other. The method comprises coupling the first and second rotatable members together to allow counter rotation of the first and second rotatable members about a rotation axis by the user hands.

According to an aspect of the present invention there is provided a method of using exercise apparatus. The exercise apparatus comprises first and second rotatable members each having an outer side and an inner side opposite the outer side, the respective inner sides being adjacent to each other, and the first and second rotatable members being coupled together. The method comprises engaging respective user hands with the outer sides of the first and second rotatable members. The method comprises applying opposing rotational forces to the first and second rotatable members via the user hands to cause counter rotation of the first and second rotatable members.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more examples of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows an exploded view of exercise apparatus according to an example of the invention; Figures 2(a)-2(e) show views of a rotatable disc of the exercise apparatus of Figure 1, in particular: Figure 2(a) shows a plan view of an outer side of the rotatable disc; Figure 2(b) shows a plan view of an inner side of the rotatable disc; Figure 2(c) shows a side view of the rotatable disc; Figure 2(d) shows the cross-section along the line A-A indicated in Figure 2(b); and, Figure 2(e) shows the region C indicated in Figure 2(b); Figures 3(a) to 3(f) show views of a shaft of the exercise apparatus of Figure 1, in particular: Figure 3(a) shows a perspective view of the shaft; Figure 3(b) shows a plan view of the shaft; Figure 3(c) shows a side view of the shaft; Figure 3(d) shows the cross-section along the line A-A indicated in Figure 3(c); Figure 3(e) shows a side view of the shaft; and, Figure 3(f) shows the region B indicated in Figure 3(f); Figures 4(a) and 4(b) show perspective and plan views, respectively, of a torsion spring of the exercise apparatus of Figure 1; Figure 5 shows a cross-sectional view of the exercise apparatus of Figure 1 in an assembled state; Figures 6(a) to 6(d) show views of a shaft of exercise apparatus according to another example of the invention, in particular: Figure 6(a) shows a side view of the shaft; Figure 6(b) shows a cross-sectional side view of the shaft; Figure 6(c) shows the region C indicated in Figure 6(a); and, Figure 6(d) shows a top view of the shaft; Figures 7(a) and 7(b) show side and top views, respectively, of a hand strap for securing to exercise apparatus according to examples of the invention; Figures 8(a) to 8(d) show views of a handle for attaching to exercise apparatus according to examples of the invention, in particular: Figure 8(a) shows a perspective view of a top side the handle; Figure 8(b) shows a perspective view of a bottom side of the handle; Figure 8(c) shows a side view of the handle; and, Figure 8(d) shows a cross-sectional side view of the handle; Figures 9(a) and 9(b) show views of a magnet arrangement disposed on exercise apparatus according to an example of the invention; Figure 10 outlines the steps of a method of assembling exercise apparatus according to examples of the invention; and, Figure 11 outlines the steps of a method of using exercise apparatus according to examples of the invention.

DETAILED DESCRIPTION

The present invention provides low-impact exercise apparatus, or a low-impact exercise device, having a pair of coupled or connected rotatable members -such as discs -that are rotatable relative to each other. In particular, counter rotation of the discs is permitted upon respective rotational forces being applied to the discs in opposing directions. That is, both of the discs rotate, in particular in opposite directions. The exercise apparatus is particularly configured to allow a user's hands to be placed on, or engaged with, outer sides of respective ones of the discs, and for the counter rotation to be initiated by the user by applying rotational force to the discs with their hands. It is envisaged that the user will cause counter rotation of the discs while performing one or more exercises as part of a low-impact exercise routine.

Figure 1 illustrates exercise apparatus 10, or an exercise device 10, according to an example of the invention, in particular an exploded view of the apparatus 10. The apparatus 10 includes a pair of rotatable members 11, 12 -first and second rotatable members 11, 12 -in the form of elongate circular discs. In the described example, the first and second rotatable members 11, 12 are substantially identical; however, this need not be the case. The apparatus 10 includes a shaft 13 for coupling or connecting the rotatable discs 11, 12 together in a manner such that the discs 11, 12 are rotatable relative to each other. The apparatus 10 also includes a pair of torsion springs 14, 15 first and second torsion springs 14, 15 -that provide a degree of resistance to rotation of the discs 11, 12.

With additional reference to Figures 2(a) to 2(e) -which show one of the rotatable members 11 -each of the rotatable members 11, 12 has an outer side 111 (shown particularly in Figure 2(a)) and an inner side 112 (shown particularly in Figure 2(b)) opposite the outer side 111. With particular reference to Figure 2(a), the outer side 111 may include a number of engagement features 113 arranged to engage the hands of a user. In the described example, the engagement features 113 include a number of finger-type indentations 113a at one side of the rotatable member 11 and palm-type indentations 113b at an opposite side of the rotatable member 11. The engagement features 113 are generally shaped to receive and engage with a user's hand specifically, in this example, three fingers and the base of the palm, although any suitable arrangement is possible -to aid rotation of the rotatable members 11, 12 by the user and to help maintain engagement of the user's hands during rotation.

The rotatable members 11, 12 include a pair of suitably-sized strap slots or holes 114 for receiving a strap therethrough. This is discussed below. The strap slots 114 extend all the way between the outer and inner sides 111, 112 of the rotatable members 11, 12.

The strap slots 114 are located at opposite sides of the rotatable member 11, 12 from each other.

In the described example, the rotatable members 11, 12 have a shaft hole 115 at their centre for receiving the shaft 13 therethrough. The shaft holes 115 define an axis of rotation of the exercise device 10 and extend all the way between the outer and inner sides 111, 112 of the rotatable members 11, 12. Although the axis of rotation is around a centre axis of the rotatable members 11, 12 in the described example, this need not be the case. In the described example, the strap slots 114 are located at approximately 90 degrees orientation about the rotation axis from the engagement features 113. The rotation axis is perpendicular to a plane of each of the first and second rotatable members 11, 12.

With particular reference to Figure 2(b), the inner sides 112 of the rotatable members 11, 12 have a ridge formation 115 extending from a surface of the inner sides 112. The ridge formation 116 comprises a circular portion 116a having a smaller circumference than that of an edge 117 of the exercise device 10. The ridge formation 116 also includes a number of azimuthally-spaced spokes 116b extending outwards from the circular portion 116a towards the edge 117. It may be seen in Figure 1 that the azimuthally-spaced spokes 116b tapers in thickness from the circular portion 116a towards the edge 117 of the rotatable members 11, 12. Indeed, it may be seen that in the described example the edge portion 117 is thinner than a central portion -e.g. at the shaft hole 115 -of the rotatable member 11 (see Figure 2(c), for example). The ridge formation 116 further includes a number of azimuthally-spaced spokes 116c extending inwards from the circular portion 116a towards the shaft hole 115 at the centre of the rotatable member 11. The ridge formation 116 further includes a crescent portion 116d, concentric with the circular portion 116a at the end of the inwardly-extending spokes 116c opposite the circular portion 116a. One or both ends of the crescent portion 116d define an engagement feature 116e, as will be discussed below. The rotatable member 11 includes a dyke 118 at its inner side 112 in the form of a wedge-shaped piece that extends from the circular portion 116a and tapers towards the shaft hole 115 at the centre of the rotatable member 11.

Figure 2(d) shows a cross-sectional view of the rotatable member 11 through the section A-A indicated in Figure 2(b), and Figure 2(e) shows the region C indicated in Figure 2(d) in greater detail. Each of Figures 2(d) and 2(e) show the shaft hole 115 in greater detail.

In particular, the shaft hole 115 is shaped to receive a screw (not shown in Figures 2(d) and 2(e)) -although other connecting or joining means are possible -that is for securing or connecting the rotatable member to the shaft 13. As such, the shaft hole 115 is larger at the upper side 111 of the rotatable member 11 than at the lower side 12 so as to accommodate a head of the screw. The shaft hole 115 is also shaped to receive a washer (not shown in Figures 2(d) and 2(e)) to separate the screw head from the rotatable member 11.

Figures 3(a) to 3(e) show various views of the shaft 13 of the exercise apparatus 10. The shaft 13 is arranged to mechanically couple the first and second rotatable members 11, 12 together. The shaft 13 is of generally cylindrical shape along its length. At each end 131a, 131b of the shaft 13 there is a threaded bore extending inwards into the shaft 13 and into which respective screws may be received. The shaft 13 is divided into identical first and second halves 132a, 132b -also referred to as upper and lower halves 132a, 132b -by a separator flange 133 extending perpendicular to the length of the shaft 13.

The separator flange 133 is generally circular or ring shaped and has a larger radius than the rest of the shaft 13.

Each shaft half 132a, 132b has three generally cylindrical sections 134a, 134b, 134c each having a different radius. The innermost cylindrical section 134a adjacent to the separator flange 133 has the largest radius, while the outermost cylindrical section 134c adjacent the end 131a, 131b has the smallest radius. The centre cylindrical section 134b between the innermost and outermost sections 134a, 134c has a wedge portion 135 extending radially outwards therefrom, the wedge portion 135 having the substantially the same radius as the innermost section 134a. The shaft 13 also has a slot 136 extending from each end 131a, 131b of the shaft 13 along its length to the separator flange 133. These will be discussed below.

Figures 4(a) and 4(b) show perspective and top views, respectively, of one of the torsion springs 14. The torsion springs 14, 15 are arranged to resist counter rotation between the rotatable members 11, 12. The spring 14 is generally coiled in shape. An inner side or end of the spring -i.e. at the inside of the coil -has an inner end engagement feature 141 in the form of a hook. The hook 141 at the inner side forms an approximate 90 degree angle. Similarly, an outer side or end of the spring -i.e. at the outside of the coil -has an outer end engagement feature 142 also in the form of a hook. The hook 142 at the outer side of the coil forms an approximate U-shape.

A method of assembling the exercise apparatus 10 will now be described with additional reference to Figure 5. The springs 14, 15 are secured onto the shaft 13. In particular, the first spring 14 is slid onto the first end 131a of the shaft. Specifically, the inner end engagement feature 141 of the spring 14 engages with the slot 136 of the shaft 13. The spring 14 is slid all the way along the shaft 13 so that it is adjacent with, and abuts, the separator flange 133. The radius of the separator flange 133 may be substantially similar to, or larger than, the radius of the spring 14 in its default or rest position. A height of the spring 14 may be substantially equal to the innermost cylindrical portion 134a of the shaft 13. The dyke 118 is arranged to abut the torsion spring 14 to maintain its position. The second spring 15 is then slid onto, and engaged with, the second end 131b of the shaft 13 in a corresponding manner. The separator flange 133 therefore keeps the springs 14, 15 apart and, in particular, prevents the springs 14, 15 contacting each other.

The rotatable members 11, 12 are brought together such that their respective inner sides 112 are adjacent. The shaft 13 is inserted into the shaft holes 115 of each of the rotatable members 11, 12. In particular, the upper half 132a of the shaft is inserted into the first rotatable member 11 and the lower half 132b of the shaft 13 is inserted into the second rotatable member 12. The outer side engagement feature or hook 142 of the respective torsion springs 14, 15 is engaged with, or hooked onto, the engagement feature 116e -i.e. the end of the crescent portion 116d -of the respective rotatable members 11, 12. The rotatable members 11, 12 are adjacent such that the respective circular portions 116a of the ridge formations 116 are brought into contact. In some examples, there may be a slither of plastic where the rotatable members make contact so as to reduce friction therebetween.

The shaft 13 is secured to the rotatable members 11, 12 using respective screws 151a, 151b. A washer 152a, 152b is first inserted into the shaft holes 115. The screws 151a, 151b are then inserted into the shaft holes 115 and screwed into the threaded bores at each end 131a, 131b of the shaft 13 to secure the shaft 13 to the rotatable members 11, 12. Counter rotation of the rotatable members 11, 12 is then possible. Note that rotation in both directions from a default position is possible for each of the rotatable members 11, 12.

Figures 6(a) to 6(d) show views of a shaft 60 of exercise apparatus according to another example of the invention. In particular, in such an example the exercise apparatus includes first and second rotatable members substantially as described above. However, there is no additional resistance means in the form of springs in this example. As such, the shaft 60 is simply substantially cylindrical shape. In particular, there is no separator flange as in the previous example because there are no springs that need to be kept apart. Each end 601a, 601b is of slightly smaller radius that a central portion 602 of the shaft 60: this allows insertion of the shaft 60 into the shaft holes of the rotatable members. Like the shaft of the previous example, the shaft 60 has a threaded 603 at each of its ends to allow insertion of a screw. In this example, only friction -for example, between the respective ridge formations of the rotatable members -needs to be overcome to cause relative rotation between the rotatable members. The shaft 60 may also be used in examples where rotational resistance means other than torsion springs are used.

Figures 7(a) and 7(b) illustrate an example of a hand strap 70 that may be used to secure a user's hand to the rotatable members 11, 12. One hand strap 70 for each of the rotatable members 11, 12 is needed. Each hand strap 70 is sized to pass through each of the strap slots 14 of a particular one of the rotatable members 11, 12 to form a loop. The ends 701a, 701b of the hand strap may be fastened together by any suitable means. For instance, in the described example, the ends 701a, 701b have hook-and-loop fasteners 702.

Figures 8(a) to 8(d) illustrate an example of a handle 80 that may be attached to the rotatable members 11, 12 in some examples. In particular, two such handles would be needed, one for each of the rotatable members 11, 12. The handle 80 has a handle upper side 801a and a handle lower side 801b opposite the upper side 801a. The handle is generally the shape of a circular dome, although other suitable shapes are possible. The lower side 801a has a generally circular flat bottom 802 that is arranged to contact, and attach to, approximately a central portion of the outer side 111 of the rotatable member 11, 12. The attachment may be via any suitable attaching means, e.g. hook-and-loop attachment means such as Velcro®. That is, both the bottom 802 of the handle 80 and the outer side 111 of the rotatable member 11, 12 may be provided with suitable complementary attachment means. The upper side 801a of the handle 80 includes a gripping portion 803 for a user to grip or hold with their hand. In the described example, the gripping portion 803 is generally dome-shaped and has a slightly smaller radius at its base than the lower side 801b of the handle 80. The lower portion 801b therefore forms a flange portion which can help in preventing the user's hand contacting the outer side 111 of the rotatable member 11, 12 while gripping the handle 80. For some users, gripping a handle such as the described handle 80 may be easier and/or more comfortable than placing their hand flat on the outer side 111 of the rotatable member 11, 12 to use the apparatus 10. The handle 80 may be formed from any suitable material, e.g. plastic, rubber, etc. In different examples, a solid handle -formed from plastic, for example -may be formed separately from the rotatable discs and then assembled together. Equally, in further different examples the apparatus may be formed as a single piece with a handle integrally formed with each of the discs.

In the above-described example, rotational resistance is provided by resistance means in the form of one or more torsion springs. Figures 9(a) and 9(b) show an example in which rotational resistance is provided by alternative resistance means. In particular, Figures 9(a) and 9(b) illustrate parts of an alternative exercise apparatus 90 having rotational resistance means in the form of a magnet arrangement. Like the above-described example, the exercise apparatus 90 has first and second rotatable members 91, 92 that are to be coupled to allow counter rotation therebetween. The rotatable members 91, 92 may be coupled using the shaft 60, for example. Unlike the above-described example, however, the apparatus 90 includes a magnetic arrangement 93 disposed in correspondingly-shaped recesses 94 in the inner sides of the rotatable members 91, 92.

In particular, the magnetic arrangement 93 includes a core part 931 disposed at a central portion of the rotatable members 91, 92. The magnetic arrangement 93 also includes a number of magnets 932 disposed around the core part 931. Upon rotation of the rotatable members 91, 92, the magnets 932 interact to provide magnetic resistance to such rotation which must be overcome by the user.

Figure 10 summarises the steps of a method 1000 for assembling the exercise apparatus 10, 90. At step 1001, first and second rotatable members 11, 12, 91, 92 are provided, each having an outer side 111 for engaging a user's hand and an inner side 112 opposite the outer side 111. At step 1002, the respective inner sides 111, 112 of the first and second rotatable members 11, 12, 91, 92 are arranged adjacent to each other.

At step 1003, the first and second rotatable members 11, 12, 91, 92 are coupled together to allow counter rotation of the first and second rotatable members 11, 12, 91, 92 about a rotation axis by the user hands. In the described examples, the rotatable members 11, 12, 91, 92 are coupled together using a shaft 13, 60 inserted through the respective centres of the rotational members and defining a rotation axis about which the rotatable members rotate, and secured to the rotatable members with screws. The rotatable members and shaft may be formed from any suitable material, e.g. plastic.

Figure 11 summarises the steps of a method 1100 of using the exercise apparatus 10, 90. The exercise apparatus 10, 90 is provided at step 1101 and includes first and second rotatable members 11, 12, 91, 92 each having an outer side 111 and an inner side 112 opposite the outer side 111, the respective inner sides 111 being adjacent to each other, and the first and second rotatable members 11, 12, 91, 92 being coupled together.

At step 1102, a single user engages their hands with the outer sides of the respective first and second rotatable members 11, 12, 91, 92. Alternatively, two users may each engage one of their hands on respective ones of the rotatable members 11, 12, 91, 92. A user engaging their hand with an outer side of a rotatable member can be the user placing their palm flat on the outer side, e.g. in the engagement features 113. A user engaging their hand with an outer side of a rotatable member can also be, however, the user gripping a handle -e.g. the handle 80 -that is attached to the outer side of the

rotatable member.

At step 1103, the user applies opposing rotational forces to the first and second rotatable members 11, 12, 91, 92 using their hands to cause counter rotation of the first and second rotatable members 11, 12, 91, 92. In the example in which rotational resistance is provided by the torsion springs 14, 15, in the absence of external force, e.g. from the user's hands, the torsion springs 14, 15 bias the rotatable members 11, 12 towards a default position to unload the springs. This unloading is in the form of an axial force and the end of the spring rotates through an angle. The torsion springs 14, 15 permit a certain amount of counter rotation between the rotatable members 11, 12 before they are fully loaded such that no further rotation is permitted. The torsion springs 14, 15 may be chosen to provide any suitable amount of rotation, e.g. 180 to 270 degrees. Different torsion springs having different tensions and/or permitted rotation may be chosen depending on the particular user or the particular activities for which the apparatus is to be used.

The exercise apparatus of the described examples may be used to undertake many different exercises. Using the above-described exercise apparatus 10 as an example, the user may engage their hands with the outer sides 111 of the respective rotatable members 11, 12 of the assembled apparatus 10 and hold the apparatus 10 in front of them with their arms straight and the springs in their default, unloaded position. The user may then cause counter rotation of the rotatable members 11, 12 by applying opposing rotation forces on the rotatable members 11, 12. This causes one of the springs to become loaded. At the same time the user may bend their elbows and bring the exercise apparatus 10 towards or over one of their shoulders to a desired position or until the spring is fully loaded. The direction of rotation is then reversed to return the user's arms and hands to the starting position in front of their body. This may then be repeated to bring the exercise apparatus 10 towards or over the other shoulder by causing rotation in the opposite direction. Similar exercises may also be used to work elbows and stomach muscles, for example, and can incorporate twisting exercises. The apparatus 10 may also be used to perform manoeuvres in disciplines such as yoga, pilates and tai chi.

One example exercise using the apparatus 10 is as follows. When standing upright, the user tucks their left arm into their side with their elbow bent at approximately 90 degrees such that their lower arm and hand extends out in front of the body. The user then brings their right hand to be on top of their left hand with the apparatus between their palms.

The user then extends their left arm out to in front of their body. This will naturally cause counter rotation of the rotation discs, and the left arm will naturally move to the centre of the body where both arms are extended. The user then turns their arms upside down, still with the apparatus between their hands, and then brings their right elbow in towards the right-hand side of their body. Again this causes counter rotation of the discs of the apparatus. This process may then be repeated in reverse. As an add-on to the above, the user's elbows may be brought past the body to stick out backwards for a stronger workout of the biceps, pecks and shoulders. As a different add-on to the above, as the elbow is brought to the side of the body, the user twists the returning elbow out and slightly forward such that the apparatus finished substantially below the armpit. Again, this causes a stronger workout of the biceps, pecks and shoulders.

It will be appreciated that various changes and modifications may be made to the described examples without departing from the scope of the present invention as defined in the claims.

In the described example, the rotatable members are in the form of circular discs. In different examples, however, the rotatable members may be any suitable shape, for example (but not limited to), ellipses, rectangles, triangles, or any other suitable straight-sided or curved polygons. Also, in the described example, the rotatable members are elongate. However, this need not be the case. In different examples in which the rotatable members are not elongate, the user may grip the rotatable members during use rather than engage their hand flat on the rotatable members.

In the described examples, handles and/or straps may be separate components that are added or secured separately to the discs of the apparatus. In different examples, however, the apparatus may be formed to include handles or straps that are integral with the rotatable discs.

In an example described above, the exercise apparatus includes a pair of torsion springs, one associated with each of the pair of rotatable members. In different examples, the exercise apparatus may include only a single torsion spring, e.g. to provide resistance in only one rotation direction. In further different examples, the exercise apparatus may not include any torsion springs, or other resistance means, such there is no additional rotational resistance to rotating the pair of coupled discs. This may be particularly useful for exercises where additional resistance is not needed, or for people where additional resistance would not be appropriate.

In different examples, the shaft may extend through the outer side of each of the first and second rotatable members so that it protrudes from the outer sides of the rotatable members. In such examples, the shaft may be arranged to attach to a hand or foot grip or handle of the exercise apparatus. The hand/foot grips may not be in contact with the outer surface of the rotatable members.

Examples of the invention are advantageous in that they provide for a relatively inexpensive and versatile device. In particular, an exercise device according to examples of the invention is significantly less expensive than many other pieces of equipment that may be used to perform low-impact exercise. Also, an exercise device according to examples of the invention is relatively compact such that it can be easily moved between different locations and used in various different convenient places. This also allows the invention to be utilised in environments such as submarines or prison cells where space is severely limited. In further examples, air-filled balls may be incorporated into the device to add buoyancy such that the device may be used in aqua aerobics environments. Similarly, the invention is well-suited to use in low or micro gravity environments to combat the health and fitness challenges faced by humans spending prolonged periods of time in such environments.

Examples of the invention are advantageous in that they provide for a device which allows for many different exercises to be performed that work a range of joints or muscles. In particular, such a device allows for engagement of the entirety of the muscular and skeletal systems of the upper body including the shoulders, arms, chest, wrists, hands, spine and core. The possible exercises that may be performed may be regarded as isotropic as the device allows for exercises in which both sides of the body are worked in the same way. In particular, the exercise apparatus may be used for physiotherapy, joint mobility, or treating specific issues such as a frozen shoulder. In addition, a device according to examples of the invention allows for exercises to be performed in a correct manner such that there is a reduced risk of injury. For instance, it is envisioned that one way in which the exercise device may be used is for a user to engage each of their hands against the outer side or surface of the respective rotatable members such that their hands remain locked in place relative to the respective rotatable members while an exercise is performed, thus aiding correct movement of the body during the exercise.

Examples of the invention are advantageous in that they provide an exercise device that may be used by many different people with a wide range of physical capabilities. For instance, the device may be used by a person who is sitting down, or perhaps even lying down. In alternative examples, the device may be used one-handed against a wall or modified to accommodate individuals with chronic hand, finger or wrist pain or deformation as a result of arthritis, for example. Equally, the exercise device may be used beneficially by an otherwise physically capable person who is recovering from an injury to a particular joint or muscle, where the exercise device may be used to target the particular joint or muscle with relatively gentle strengthening exercises.

Examples of the invention are advantageous in that they provide exercise apparatus that may be designed, adapted or modified to suit a particular person's needs, abilities or capabilities. For instance, examples of the invention provide a device with resistance means to provide a certain degree of resistance to counter rotation of the rotatable members. The resistance means can be replaced, modified or chosen such that a desirable and appropriate level of rotational resistance is provided for a particular user or users. In examples comprising torsional springs, springs having a different stiffness may be chosen as appropriate. In some examples of the invention, no additional resistance means is provided such that friction between the rotatable members only needs to be overcome to cause counter rotation between the rotatable members: such a configuration may be beneficial when particularly gentle exercise is required. The device may be flexible enough to allow either dynamic or static exercise patterns that can engage muscle groups working antagonistically or synergistically, as is suitable for the needs of individuals.

Examples of the invention are advantageous in that they provide for an exercise device that may be used alone by one person or, alternatively, by a pair of people. For instance, when used in a pair, each person in the pair may apply one of their hands to the outer side of respective ones of the rotatable members so that exercises may be performed together. The device may therefore provide social, as well as physical, benefits.

Disc exercising, or discing', provides advantages by engaging shoulder, arm and hand systems together, enhancing full-system health for normal everyday activity at home. It targets key low-activity areas of the body and is therefore ideal for the elderly, infirm, or those on a rehabilitation or physiotherapy program. These low-exertion, low-mobility and low-stress activities can be easily achieved from a standing or seated position and are compatible with tai chi, yoga and pilates.

Examples of the invention are advantageous in that the device may be manufactured and assembled using standard additive manufacturing technology, such as a 3D printer using standard plastics and resins. The design for the device can therefore be transported easily and assembled at the desired target location, reducing shipping and other transport costs. This may be particularly beneficial for potential use of the invention in hard to access places, e.g. space, as sending a radio signal to the desired location for 3D printing to be subsequently 'printed' allows for effective weightless transportation of the device.

Claims

CLAIMS1. Exercise apparatus, comprising: first and second rotatable members each having an outer side for engaging a user's hand and an inner side opposite the outer side, the respective inner sides being arranged adjacent to each other, wherein the first and second rotatable members are coupled to allow counter rotation of the first and second rotatable members about a rotation axis by the user hands.
2. Exercise apparatus according to Claim 1, wherein the rotation axis is perpendicular to a plane of each of the first and second rotatable members.
3. Exercise apparatus according to Claim 1 or Claim 2, wherein the rotation axis is at a centre of each of the first and second rotatable members.
4. Exercise apparatus according to any previous claim, wherein the first and second rotatable members are elongate.
5. Exercise apparatus according to any previous claim, wherein the first and second rotatable members are circular discs.
6. Exercise apparatus according to any previous claim, wherein the outer sides of the first and second rotatable members comprise one or more engagement features arranged to engage the user hands.
7. Exercise apparatus according to any previous claim, the apparatus comprising a shaft arranged to couple the first and second rotatable members together.
8. Exercise apparatus according to Claim 7, wherein each of the first and second rotatable members have a shaft hole, and wherein the shaft has a threaded bore at each of its ends, the first and second rotatable members being secured to the shaft by respective screws inserted through the shaft holes and into the threaded bores.
9. Exercise apparatus according to Claim 7 or Claim 8, wherein a length of the shaft extends along the rotation axis.
10. Exercise apparatus according to any of Claims 7 to 9, wherein the shaft extends through the outer side of each of the first and second rotatable members, the shaft being arranged to attach to a hand or foot grip of the exercise apparatus.
11. Exercise apparatus according to any of Claims 7 to 10, the apparatus comprising rotational resistance means arranged to resist counter rotation between the first and second rotatable members.
12. Exercise apparatus according to Claim 11, wherein the rotational resistance means is between the first and second rotatable members.
13. Exercise apparatus according to Claim 11 or Claim 12, wherein the rotational resistance means comprises torsion spring means arranged to bias the first and second rotatable members to a default rotational position.
14. Exercise apparatus according to Claim 13, wherein the torsion spring means comprises: a first torsion spring that engages with the first rotational member and the shaft; and, a second torsion spring that engages with the second rotational member and the shaft.
15. Exercise apparatus according to Claim 14, wherein the inner sides of the first and second rotatable members each comprise an engagement feature arranged to engage with an outer end of the respective first and second torsion springs.
16. Exercise apparatus according to Claim 14 or Claim 15, wherein the shaft comprises slots extending from each end of the shaft along its length, and wherein the slots are arranged to engage with an inner end of the respective first and second torsion springs.
17. Exercise apparatus according to any of Claims 14 to 16, wherein the shaft comprises a separator flange extending perpendicular to the length of the shaft, the separator flange being arranged to separate the first and second torsion springs.
18. Exercise apparatus according to any of Claims 14 to 17, wherein the first and second rotatable members each have a respective dyke extending from their inner sides, the respective dykes being arranged to abut the first and second torsion springs to maintain their position.
19. Exercise apparatus according to any of Claims 12 to 18, wherein the rotational resistance means comprises magnetic means arranged to provide magnetic resistance in the rotational direction.
20. Exercise apparatus according to Claim 19, wherein the magnetic means comprises an arrangement of magnets disposed about the rotational axis on the inner side of the first and/or second rotatable member.
21. Exercise apparatus according to any previous claim, wherein the first and second rotatable members have respective rim formations at their inner sides, the respective rim formations being adjacent to each other.
22. Exercise apparatus according to any previous claim, wherein the first and second rotatable members each include strap slots arranged to receive a strap therethrough to secure the user hands to the first and second rotatable members.
23. A kit of parts, comprising: exercise apparatus according to any previous claim; and, at least one hand strap for securing the user hands to the first and second rotatable members, and/or one or more handles for attaching to the first and second rotatable member.
24. A method of assembling exercise apparatus, the method comprising: providing first and second rotatable members each having an outer side for engaging a user's hand and an inner side opposite the outer side; arranging the respective inner sides of the first and second rotatable members adjacent to each other; and, coupling the first and second rotatable members together to allow counter rotation of the first and second rotatable members about a rotation axis by the user hands.
25. A method of using exercise apparatus, the exercise apparatus comprising first and second rotatable members each having an outer side and an inner side opposite the outer side, the respective inner sides being adjacent to each other, and the first and second rotatable members being coupled together, and the method comprising: engaging respective user hands with the outer sides of the first and second rotatable members; and, applying opposing rotational forces to the first and second rotatable members via the user hands to cause counter rotation of the first and second rotatable members.