Abstract:
A wheel holder for a bicycle carrier for a vehicle includes at least one body having at least one wheel receiving surface, a first plane aligned with a rotation plane of the bicycle wheel after the bicycle wheel has been mounted to the wheel holder, and at least one fastening member configured to retain the bicycle wheel to the at least one wheel receiving surface of the body. The fastening member has a released position in which the bicycle wheel can be positioned in the wheel holder and a secured position in which the wheel holder retains the bicycle wheel. The at least one fastening member is configured to extend in a diagonal direction across the first plane when positioned in the secured position.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to a wheel holder for a bicycle carrier and a bicycle carrier having at least one wheel holder. The wheel holder is configured to provide a rigid and stable connection with the wheel. 
       BACKGROUND 
       [0002]    Bicycle carriers, sometimes referred to as bicycle racks, are used to transport bicycles on vehicles. When transporting bicycles on vehicles manufacturers have constantly struggled with the problem of readily attaching the bicycle to the bicycle carrier to prevent accidents. The US patent application no. US 2007/0164065 A1 disclose a bicycle holder for a bicycle rack. The bicycle holder comprises two engagement members adapted to engage in two tracks. The engagement members embrace the bicycle rack and are said to be configured to be slideably engaged with the tracks. A securing portion in the form of a strap is used to secure the wheel of the to the bicycle holder. 
         [0003]    The German patent application DE 10 2005 058 861 A1, Volkswagen AG, disclose a bicycle wheel holder comprising a plate and a lever. The wheel is pinched between the plate and the lever. It has now been found that wheel holders for bicycle carriers can be improved. 
         [0004]    The wheel holder describes above suffers from the drawbacks. None of the above mentioned publications provides for a wheel holder which imparts stability to the wheel while being retained to the wheel holder. The wheels may be destabilized by air turbulence for example as the vehicle moves, such air turbulence may cause wheel to wobble for example. If a wheel wobbles, there will be a disturbing sound and vibrations in the vehicle. In the long run it may also increase the risk for fatigue breakdown of the material in the wheel holder or in other parts of the bicycle carrier. An attempt to address this problem has been to have wheel holder having cradles which support the wheel sides. These attempts have not been very successful. 
       SUMMARY 
       [0005]    It is an object of the present disclosure to provide for an improved wheel holder for a bicycle carrier which removes or at least reduces the drawbacks described above. The objects are at least partly met by 
         [0006]    a wheel holder for a bicycle carrier for a vehicle. The wheel holder is configured to receive and retain a wheel having a tread and comprises at least one body providing a first and a second wheel receiving surface. The first and the second wheel receiving surfaces are separated a distance in a first plane, the first plane is aligned with a rotation plane of the wheel of the bicycle after the wheel has been mounted to the wheel holder. At least one fastening member is adapted to retain the wheel of the bicycle to the first and the second wheel receiving surfaces of the body. 
         [0007]    A void is formed between the first and second wheel receiving surfaces, the void is adapted to receive a portion of the wheel of the bicycle so that the first and second wheel receiving surfaces provide two distinct support points to the tread of the wheel separated by the void when the fastening member retains the wheel of the bicycle to the body of the wheel holder. 
         [0008]    The wheel holder provides for a compact wheel holder which also provides for stability to the wheel. A compact wheel holder has the benefits of providing low wind resistance especially when a bicycle is not mounted thereto. The wheel holder has two distinct support points for supporting the outer wheel circumference, i.e. the tread of the wheel. The first and the second wheel receiving surfaces provide the wheel with first and a second distinct support points which are separated at least with respect to the length of the wheel holder. 
         [0009]    The distinct support points can be separate support points. In such as case, the void can be a support point free zone. In some cases however, the tread of the wheel may rest gently on the underlying surface. In such cases, the main support to the wheel is imparted at the separated support points. In general terms, the first and second wheel receiving surfaces provide two separated main support points to the tread of the wheel when the fastening member retains the wheel of the bicycle to the body of the wheel holder. In both the above mentioned cases, the support points are distinct as they carry a high majority of the weight and force imparted to the wheel holder. The support points substantially carry the weight of the wheel and the bicycle. 
         [0010]    The wheel holder provides stability and reduces wobbling particularly during transport. It can also reduce wear on the rim, the frame, the wheel holder itself, and thus also the bike carrier as a whole. It reduces risk that something breaks due to material fatigue, which could be disastrous should a bicycle or wheel accidentally fall off a bicycle carrier. 
         [0011]    The void can be at least partly formed by the at least one body of the wheel holder, preferably by an aperture formed in one body or by a void formed between two separate bodies. If there are two separate bodies providing the first and the second wheel receiving surfaces, each body has a wheel receiving surface. The enable two distinct support points, a combination of raised ridges and an aperture is advantageous as such a wheel holder has been found to be easy to manufacture and require less material. 
         [0012]    The wheel can be retained to the wheel holder in different manners. One advantageous configuration is if the at least one fastening member is adapted to extend substantially between the first and the second support points. In such case the fastening member can extend across the rim of the wheel diagonal with respect to the rotation plane of the wheel and the first plane. It is believed that this may assist in retaining the wheel in a preferred direction. It may also assist the positioning of the wheel holder with respect to a load carrier foot of a load carrying bar, or roof rack, when a bicycle carrier comprising at least one wheel holder is mounted to such load carrying bar. The fastening member can be tightened in different manners to the wheel holder using a fastening mechanism or simply by hooking it onto a portion of the wheel holder. The fastening member may be formed by a strap which can be elastic or substantially non elastic. 
         [0013]    At least one of the first and second wheel receiving surfaces can be displaceably arranged to the body so that the distance between the first and second wheel receiving surfaces can be changed. If the first and/or the second wheel receiving surfaces are formed by ridges for example, the first and/or the second ridges can be slideably arranged on the body of the wheel holder to enable the displacement. 
         [0014]    It has been found that a simple and sturdy construction is achieved is the body and the first and the second wheel receiving surfaces are integrally formed in one piece of material. One way of forming the body and the first and the second wheel receiving surfaces in one piece of material is by moulding the wheel holder using plastic material. 
         [0015]    The first and second wheel receiving surfaces can be formed by a first and a second ridge portion. The first and/or the second ridge portion can comprise at least one an arc shaped ridge extending along the first plane. The wheel holder may thus comprise at least two separated arc shaped ridges separated in the first plane. The at least two separated arc shaped ridges separated in the first plane are preferably aligned with each other. The wheel holder preferably comprises at least two pair of aligned arc shaped ridges. The arc shaped ridges can preferably be separated a distance perpendicular to the first plane so that the wheel is not pinched between the two arc shaped ridges, but rather rests upon the arc shaped ridges. 
         [0016]    The at least two pair of arc shaped ridges has two opposing sides facing towards each other and two opposing sides facing away from each other. The two opposing sides facing towards each other are substantially vertical and/or the two opposing sides facing away from each other are substantially angled with respect to a vertical axis. Having angled sides facing away from each other provides for rigid arc shaped ridges, or rigid ridges if the ridges have any other form. The rigidity of the ridges is advantageous if the wheel of the bicycle is being imparted with a force to turn e.g. via the wind resistance during transportation of the bicycle. It may also have the advantage that the raised portions have a tendency to cut into the wheel, rather than having the wheel flattened out onto the raised ridges. 
         [0017]    The ridge portions may be hollow to save material in the manufacturing process. 
         [0018]    The first and/or the second ridge portion can comprise at least two arc shaped ridges having different height, preferably different maximum height. Ridges of different heights enable wheel of different thickness, or different sizes to be safely secured to the wheel holder. The wheel holder can thus be configured to be compatible with wheels having a thickness of up to 30 cm, preferably from 1-10 cm. The height difference between two ridges, preferably arc shaped ridges, can be from 0.3-3.0 cm, preferably from 0.5-1.5 cm. 
         [0019]    The wheel holder is preferably configured so that it can slide along the length of the bicycle carrier when mounted thereto. If the wheel holder in not positioned underneath the wheel of the bicycle directly, the wheel holder can be configured to be slip along the length of the bicycle carrier underneath the wheel. Such manoeuvre is simplified by having the wheel receiving surfaces formed by arc shaped ridges. The arc shaped ridges thus operates as wedges when slid underneath the wheel. 
         [0020]    The distance between the arc shaped ridges in the first plane, is preferably selected to be such that when a wheel of the intended size rests on the arc shaped ridges, it is substantially only the facing sides of the opposing arc shaped ridges, with respect to the first plane, which provide to distinct support points to the wheel. 
         [0021]    The height of at least one arc shaped ridge can be adjusted. This may enable more support points to the wheel. The wheel receiving surface can be formed by ridges for example, such ridge can be hinged in vertical tracks and be height adjusted by moving a wedge horizontally which pushes the ridge up and down in the track. 
         [0022]    At least one of the first and the second ridge portions comprises two ridges. The two ridges are interspaced in a direction perpendicular to the first plane. Preferably a distance from the first plane of the wheel holder, the distance is preferably from 0.5-4.0 cm. Each of the first and the second ridge portions may comprise comprises two or more ridges, such as four ridges as described below. When having four ridges, the outer pair of ridges is preferably twice the distance from the first plane as the inner pair of ridges. 
         [0023]    The wheel has a rim with a hub and a tyre. The hub and a first portion of the tyre, preferably the tread of the tyre, are positioned on either side of a line drawn between the first and second wheel receiving surfaces. The first and second wheel receiving surfaces can be made more or less prominent as support points by adjusting the height of the first and second wheel receiving surfaces. If the tread of the tyre is positioned on 1-40 cm from the line drawn between the first and second wheel receiving surfaces, the first and second wheel receiving surfaces are providing for good support points to the wheel. 
         [0024]    The first portion of the tyre comprises a point on the tyre which intersects with a vertical axis, the vertical axis extends through the hub of the wheel. The point on the tire is preferably the lowest point on the tyre. 
         [0025]    The first and the second wheel receiving surfaces can be arranged to the body so that they have substantially the same height. For example, if the first and the second wheel receiving surfaces each has an apex, they can be arranged so that if a line is drawn between the apex of the first wheel receiving surface and the apex of the second wheel receiving surface, the line is substantially horizontal. 
         [0026]    The distance between the first and the second wheel receiving surfaces can be selected to be from 5-30 cm, preferably 10-20 cm. This applies of course also if the wheel receiving surface is a ridge portion or an arc shaped ridge, or if the first and the second wheel receiving surfaces has any other form. 
         [0027]    If the first and the second wheel receiving surfaces are formed by arc shaped ridges, such arc shaped ridges preferably has a radius arc having a radii from 10-50 mm, preferably from 15-40 mm. The angle between the two radii defining the arc length of the radius arc shaped ridges can be from 40-120 degrees for example. 
         [0028]    According to a second aspect, the wheel holder is for a bicycle carrier for a vehicle is configured to receive and retain a wheel having a rim. The wheel holder comprises at least one body. A first plane aligned with a rotation plane of the wheel of the bicycle after the wheel has been mounted to the wheel holder. At least one fastening member is adapted to retain the wheel of the bicycle to the first and the second wheel receiving surfaces of the body. The fastening member has a released position in which the wheel can be positioned in the wheel holder and a secured position in which the wheel holder is retaining the wheel. 
         [0029]    The at least one fastening member is adapted to extend in a diagonal direction across the first plane and the rim of the wheel when being positioned in the secured position. 
         [0030]    By having the fastening member extending in a diagonal direction across the rim of the wheel holder and the first plane of the wheel holder, the wheel can efficiently be secured to the wheel holder. The diagonal fastening member, e.g. a diagonal strap, further imparts the wheel with a force acting to turn the wheel. It is believed without being bound by theory that the force acting to turn the wheel improves the retaining properties of the wheel holder as the wheel will be “pinched” by the wheel holder. 
         [0031]    The wheel holder has a first and a second side, each side having a first and a second end. The fastening member may extend substantially from the first end of the first side to substantially the second end of the second side. The first and second sides are preferably longitudinal sides. In this manner, the full length of the wheel holder can be used. This will also provide the fastening member with a low angle with respect to the first plane of the wheel holder. 
         [0032]    The wheel holder may be formed by a single body. The first and the second sides can thus be arranged on the one single body. In cases were the body of the wheel holder is formed by two individual and separate bodies, the first side of one body is the opposing to the second side of the second body, with respect to the first plane of the wheel. 
         [0033]    The body of the wheel holder may have at least one, preferably a first and a second protruding support portion. The at least one or the first and the second protruding support portions are adapted to counteract a force acting to impart a turning motion of the wheel due to the fastening member when the wheel is retained to the wheel holder. The wheel holder improves its “pinching” properties. 
         [0034]    The first protruding support portion may be arranged opposite of the first end of the first side, and the second protruding support portion may be arranged opposite of the second end of the second side. 
         [0035]    The fastening member may be provided with a protective cover. The protective cover may be adapted to extend across the rim of the wheel when the wheel is retained to the wheel holder. The protective cover is arranged to provide a more lenient surface towards the rim of the wheel. 
         [0036]    The fastening member may be at least partly formed by thermoplastic material such as polypropylene, acrylonitrile butadiene styrene (ABS), polyurethane, or combinations thereof. Preferably the fastening member and/or the body is at least partly formed by thermoplastic polyurethane such as poly(adipate)ester based thermoplastic polyurethane, such as ISOTHANE 1055D. The fastening member can be injection molded, blow molded or extruded. 
         [0037]    The present invention also relates to a bicycle carrier comprising at least at least one wheel holder, or two or more wheel holders, disclosed herein. The at least one wheel holder can be slideably arranged to the bicycle carrier. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0038]    Non-limiting embodiments of the present invention will be described in greater detail with reference to the accompanying drawings in which; 
           [0039]      FIG. 1  shows a bicycle carrier comprising two wheel holders and a bicycle mounted thereto; 
           [0040]      FIG. 2  shows a wheel holder and a portion of the bar of the bicycle carrier in greater detail; 
           [0041]      FIG. 3  shows the wheel holder of  FIG. 2  in greater detail with a view in perspective; 
           [0042]      FIG. 4  shows the wheel holder of  FIG. 3  as seen from above; 
           [0043]      FIG. 5  shows the wheel holder of  FIG. 3  as seen from the side, corresponding with a view along the bar of the bicycle carrier; 
           [0044]      FIG. 6  shows an illustration of the function of the wheel holder; 
           [0045]      FIGS. 7 a -7 b    show alternative forms of the wheel receiving surfaces. 
       
    
    
     DETAILED DESCRIPTION 
       [0046]      FIG. 1  shows a bicycle carrier  1  for transporting a bicycle  2  on a vehicle (not shown) such as a car. The bicycle  2 , which is only schematically illustrated, has a first and a second wheel  3 ,  4 , which in  FIG. 1  rest on the bicycle carrier  1 , so that the bicycle  2  is positioned in a transport position after being retained to the bicycle carrier  1 . In the transport position, the bicycle  2  can be transported on the bicycle carrier  1  using the vehicle. Each wheel comprises a rim  8  with a hub  7  and a tyre  9 . The bicycle carrier has a wheel holder  10 , adapted to hold and retain the wheel. It should be noted that the bicycle carrier  1  can have one or more of the wheel holder  10  described herein. The bicycle carrier could also be provided with a support arm adapted to hold the bicycle to the bicycle carrier  1 . Such support arms can be provided with a clamping jaw adapted be attached to the frame of the bicycle for example. 
         [0047]    A wheel holder will be described in greater detail below. Although only one wheel holder is described in greater detail, it should be noted that the bicycle carrier can be provided with one or more wheel holders described herein. 
         [0048]    The wheel  3  of the bicycle is retained to the wheel holder  10  using a fastening member  15 , in this case formed by a strap  16  and a strap lock  17 . The bicycle carrier comprises a bar  18  to which the wheel holder  10  is slideably attached to enable adjustment to bicycle of different sizes. In  FIG. 1 , the wheel holder  10  can be referred to as a front wheel holder, and a second wheel holder  11  can be referred to as a rear wheel holder. This enables bicycles of different sizes to be transported. As mentioned one or more additional support arms (not shown) can be used to further attach the bicycle  2  to the bicycle carrier  10 . 
         [0049]    For the purpose of orientation, the length of the bicycle carrier extends along the X axis, the height along the Y axis and a width along the Z axis, as shown in  FIG. 1 . Likewise, the length of the wheel holder extends along the X axis, the height along the Y axis and the width along the Z axis, as shown in  FIG. 1 . Each wheel has a rotation plane RP, parallel with the Y-X plane, in which the wheel would rotate about its rotation axis. 
         [0050]    The bar  18  of the bicycle carrier  1  is, in the shown embodiment, manufactured from extruded aluminum having a substantially U-shaped cross section, or V-shaped cross section, adapted to receive parts the wheels  3 ,  4  of the bicycle  2 . The substantially U-shaped cross section is formed by a groove which also is adapted to cooperate with the wheel holder  10  to partly retain the wheel holder  10  to the bicycle carrier  1  and to permit the wheel holder  10  to slide along the length of the bicycle carrier  1 , i.e. along the X axis. The wheel holder  10  can be displaced, in this case slide, along the length of the bicycle carrier  1  and more precisely the bar  18  of the bicycle carrier  1 , and thus be positioned substantially at an infinite number of different positions. In comparison, bicycle carriers having predetermined positions for wheel holders only permits a limited number of positions for the wheel holders, and thus also a limited number of different sizes of bicycles which can be transported. 
         [0051]      FIG. 2  shows the wheel holder  10  and the bar  18  of the bicycle carrier  1  in greater detail. The wheel holder  10  comprises a body  20  formed by a thermoplastic material such as polypropylene, acrylonitrile butadiene styrene (ABS), polyurethane, or the like. The  30  wheel holder  10  is adapted to be positioned on the bar  18  of the bicycle carrier  10  and hence the shape and the form of the bar facing side of the wheel holder corresponds to the shape and form of the bar  18  of the bicycle carrier  10  so that the wheel holder  10  can mate with the bar  18 . 
         [0052]    The wheel holder  10  comprises a first and a second wheel receiving surface  21 ,  22 . Each of the wheel receiving surfaces  21 ,  22  is formed by a plurality of raised ridges  24  extending along the length of the wheel holder  10 , i.e. the X axis. A void  23  is formed between the first and the second wheel receiving surface  21 ,  22 , and is adapted to receive a portion of the wheel (not shown). The first and the second wheel receiving surfaces  21 ,  22  are formed in one unitary piece of material with the body  20  but could be formed by separate components. In  FIG. 2 , each wheel receiving surface  21 ,  22  comprises two pairs of parallel raised ridges  24 ′,  24 ″. Each pair is intended to cooperate with a wheel having a predetermined size and width, enabling the wheel holder  10  to be compatible with wheels of different sizes. The wheel holder  10  is intended to receive the wheel along a first plane P 1 , which is equivalent with the rotation plane of the wheel. 
         [0053]    The void  23  separates the first and the second wheel receiving surfaces  21 ,  22 , in this case the ridges  24  of the first and the second wheel receiving surfaces  21 ,  22 . The void  23  receives a portion of the wheel when the wheel is retained to the wheel holder  10 . As a portion of the wheel is received in the void  23 , the first and the second wheel receiving surfaces  21 ,  22  will form separated support points  25 ,  25 ′ for the wheel with respect to the first plane P 1  and the void  23 . The purpose and function of this will be described in greater detail below. The ridges  34  have an arc shaped form, or a convex form, which run are parallel with respect to each other and with respect to the first plane P 1  and thus the rotation plane of the wheel after the wheel has been mounted to the wheel holder  10 . 
         [0054]    As mentioned, the fastening member  15 , shown in  FIGS. 1 and 2 , is arranged to the body  20  and adapted to extend cross the rim of the wheel to retain the wheel to the wheel holder  10 . As is noticeable in  FIGS. 2, 3, and 6 , the at least one an arc shaped ridge  24  is substantially symmetrically arc shaped but could be partly arc shaped if desirable. 
         [0055]      FIG. 3  shows the wheel holder  10  in greater detail. The body  20  comprises a first and a second aperture  51 ,  52 . The apertures  51 ,  52  can be used to attach the fastening member  15  (not shown in  FIG. 3 ) to the body  20  of the wheel holder  10  in two different positions dependent if the present wheel holder  10  is a front or a rear wheel holder. It should be noted that the fastening member can be attached to the wheel holder in any other suitable manner. 
         [0056]    The shape and form of the first and the second wheel receiving surface  21 ,  22  may vary. The important aspect is however that the first and the second wheel receiving surfaces  21 ,  22  provide the wheel with two distinct support points  25 ,  25 ′ when the wheel has been retained to the wheel holder. The distinct support points may be separated as shown in  FIG. 3 , or be main support points, i.e. receiving a high majority of the load imparted by the wheel. The two support points should be separated by a void which permits a portion of the wheel to be received therein. The force imparted by the fastening member acting on the portion of the wheel which has been received in the void of the wheel member, should be significantly less than the force imparted by the fastening member acting at the support points, i.e. at the first and the second wheel receiving surfaces. Preferably, the wheel, or more precisely the tyre of the wheel, is not imparted with any force component at all at the portion which has been received in the void of the wheel holder. 
         [0057]      FIG. 4  shows the wheel holder  10  of  FIG. 3  from above. The first plane P 1 , equivalent with the rotation plane of the wheel when mounted to the wheel holder  10 , is indicated in  FIG. 4  with dashed lines. The first and the second wheel receiving surfaces  21 ,  22  will provide the wheel with first and a second support point  25 ,  25 ′ onto which the wheel is pressed as the fastening member (not shown) is tightened. As the void  23  is arranged between the support points  25 ,  25 ′, and thus separates the support points  25 ,  25 ′, the wheel will be held towards the wheel holder  10  in a very tight and stable manner. The void  23  is partly formed, or defined, by the first and the second wheel receiving surfaces  21 ,  22 , which are formed by the plurality of raised ridges  24 . The plurality of raised ridges  24  extends along the length of the wheel holder  10 , i.e. along the first plane P 1 . Hence, the first and the second wheel receiving surfaces  21 ,  22  provide the wheel with first and a second support point  25 ,  25 ′ which are separated at least with respect to the length of the wheel holder  10 . The void  23  is also partly formed by an aperture  30  between the first and the second wheel receiving surfaces  21 ,  22 . The aperture  30  intersects with the first plane P 1  of the wheel holder  10  and provides additional space for the tyre  9  when the wheel  3  has been mounted to the wheel holder  10 . It should be noted that instead of having an aperture, a recess can provide additional space for the tyre  9  when the wheel  3  has been mounted to the wheel holder  10 . In general terms, the void  23  can be formed by raised portions of the body, such as raised ridges  24  and/or by an aperture or recess in the body  20 . Further shown in  FIG. 4  are the apertures  51 ,  52  which can be used to attach a fastening member to the body  20  of the wheel holder  10 . 
         [0058]    The aperture  30  of the body has a length LA and a width WA. The length LA can be from 4-25 cm, preferably 5-15 cm. The width WA can be from 2-12 cm, preferably 3-8 cm. 
         [0059]      FIG. 5  shows the wheel holder  10  from with a view along the first plane P 1 .  FIG. 5  shows the body  20 .  FIG. 5  shows the ridges  24  of the second wheel receiving surface  22 . As is noticed, the body  20  of the wheel holder  10  comprises a first and a second side  27 ,  28 , in this case a left and a right side when view as shown in  FIG. 5 . The second side  28 , i.e. the right side, has a protruding wall section  29  which protrudes past the level of the highest ridge  24  along the height of the wheel holder. The protruding wall section can be adapted to provide rigidity to the wheel if desirable but it is not necessary. It further provides the fastening member with a strong connection provided material for the apertures  51 ,  52  (shown in  FIGS. 3 and 4 ) which can be used to attach a fastening member to the body  20  of the wheel holder  10 . The two pairs of parallel raised ridges  24 ′,  24 ″ has different height and being positioned a distance from the center of the wheel holder  10 . Each pair is intended to cooperate with a wheel having a predetermined size and width, enabling the wheel holder  10  to be compatible with wheels of different sizes. 
         [0060]    The ridges  24  are separated a distance from the first plane P 1  as indicated in  FIG. 5 . The distance to the first plane P 1 , and thus between the ridges themselves, may vary dependent on which size of the wheel the wheel holder in intended to be used with. A suitable distance to the first plane P 1  is from 0.5-4.0 cm. When viewed as shown in  FIG. 5 , the first plane P 1  extends in the center of the lowest part of the U-formed wheel holder. The inner pair of ridges  24  may be positioned a distance of 0.5 cm from the first plane P 1  while the outer pair is positioned a distance of 1.0 cm from the first plane P 1 . The distance is measured as shown in  FIG. 5 , i.e. from the apex of the ridge and to the center of where the rotation plane RP will be positioned. Each of the first and the second ridge portions may comprise comprises two or more ridges, such as four ridges as shown in  FIGS. 2-5 . When having four ridges, the outer pair of ridges is preferably twice the distance from the first plane as the inner pair of ridges. 
         [0061]    As is further noticeable, the pair of arc shaped ridges  24 ′,  24 ″ has two opposing sides Si facing towards each other and two opposing sides S 2  facing away from each other. The two opposing sides  51  facing towards each other are substantially vertical in  FIG. 5  substantially parallel with the first plane P 1 , while the two opposing sides S 2  facing away from each other are substantially angled with respect to a vertical axis in  FIG. 5  parallel with the first plane P 1 . The angle between the two sides S 1 , S 2  of the arc shaped ridges  24 ′,  24 ″ are when viewed as illustrated in  FIG. 5  from 15-80 degrees. 
         [0062]      FIG. 6  illustrates the function of the wheel holder  10 .  FIG. 6  shows the portions of the wheel holder  10  and the wheel  3 . The ridges  24  provide with two separated support points  25 ,  25 ′, separated by the void  23 . The support points  25 ,  25 ′ are the points at which the wheel holder is imparting the wheel with the main force to retain the wheel to the wheel holder along the Y axis. The support points  25 ,  25 ′ mainly contacts the tyre  9  on the tread of the tyre  9  but preferably slightly offset to the center of the tread of the tyre  9 . It is possible that a wheel holder may have side portions which are intended to stabilize the wheel in direction of the Z axis. One or more support arms (not shown) may be used for this purpose additionally or optionally. A dashed line L 1  is drawn in  FIG. 6  between the apexes of the ridges  24 . The dashed line L 1  is referred to as an imaginary line between the ridges  24 , or between the apexes of the ridges  24 , i.e. between the first and the second wheel receiving surfaces  21 ,  22 . As is noticeable, a portion of the tyre  9 , and especially the periphery of the tyre  9  is arranged between the ridges  24  and on opposite side of the dashed line L 1  with respect to the hub  7  of the wheel  3 . Further noticeable in  FIG. 6  is that the periphery of the tyre  9  is not contacting the bottom in the void  23 . The bottom of the void  23  can be formed by the bar  18  (not shown) of the bicycle carrier  1  or by a portion of the body  20  itself. The surface beneath the void  23  could be a portion of the body  20  and/or the bar  18  of the bicycle carrier  1 . When referring to the wheel holder  10  shown in  FIG. 6 , the surface beneath the void  23  is the bar  18 , as the wheel holder  10  has an aperture between the first and the second wheel receiving surfaces  21 ,  22 . 
         [0063]    The wheel holder  10  is positioned in  FIG. 6  so a first portion of the tyre  9  has a point Pt on the tyre  9  which intersect with a vertical axis, in  FIG. 6  denoted Va, the vertical axis Va extends through the hub  7  of said wheel  3 . The vertical axis Va is parallel with the Y axis. The point Pt is the lowest point on the tyre  9  when positioned as shown in  FIG. 6 . In a general aspect, the first and the second wheel receiving surfaces  21 ,  22  and the void  23 , is positioned so that the lowest point of the tyre  9  of the wheel is positioned in the void  23  of the wheel holder  10 . 
         [0064]    The first and the second wheel receiving surfaces can be arranged to the body so that they have substantially the same height as can be seen in  FIG. 6  for example. In  FIG. 6 , the first and the second wheel receiving surfaces  21 ,  22  each has an apex and are arranged so that the line drawn between the apex of the first wheel receiving surface  21  and the apex of the second wheel receiving surface  22  is substantially horizontal. This provides for an even force distribution between the first and the second wheel receiving surfaces  21 ,  22  which is advantageous. 
         [0065]      FIGS. 7 a -7 b    show alternative shapes and forms of the wheel receiving surfaces  21 ,  22  of the wheel holder  10 . Only portions of the wheel  3  have been illustrated. As is noticeable, the wheel receiving surfaces can have different shapes and forms, as long as they provide for a first and a second distinct support point  25 ,  25 ′. In  FIG. 7 a    the wheel receiving surfaces have a circular form and in  FIG. 7 b   , the wheel receiving surfaces have a triangular form. Combinations of the shapes and forms described above, including the arc shaped form, are of course possible.