• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A bicycle fork, which is in particular a road bike fork, has two fork legs (14) connected to each other via a fork bridge (12). At the respective dropouts (16) of the fork legs (14) recesses (18) are provided for receiving a front wheel axle. In order to be able to arrange the front wheel axle (18) in different positions in the frame longitudinal direction (24) and thereby be able to change the caster, a positioning element (26) is arranged within the recesses (18). The positioning element (26) can be turned by 180 ° and thus inserted or replaced in different positions in the recess (18). This results in a change in the position of an opening (28), which serves to receive the front wheel axle.
    公开号:AT13011U1
    申请号:TGM442/2010U
    申请日:2010-07-12
    公开日:2013-04-15
    发明作者:
    申请人:Canyon Bicycles Gmbh；
    IPC主号:
    专利说明:

    Austrian Patent Office AT 13 011 Ul 2013-04-15
    description
    BICYCLE FORK
    The invention relates to a bicycle fork, in particular a road bike fork.
    Bicycle forks, which are often made of carbon or other fiber-reinforced plastics in modern racing bikes, especially in the high-quality area, are of considerable importance for the handling of a bicycle. In addition to the flexibility of the bicycle fork, the prebending of the fork is crucial for the ride of the bicycle. Due to the pre-bending of the fork, the caster of the front wheel, or the front wheel is adjusted. Caster is the distance between the actual contact point of the front wheel on the road when driving straight ahead to the theoretical point of contact defined by the extension of the steerer shaft. Since bicycle forks are usually formed curved forward, creating a corresponding caster, the axis of the front wheel relative to the longitudinal axis of the steerer tube forward, d. H. is shifted in the direction of travel. A corresponding displacement of the bicycle axle forward is of course also by tilting the fork tubes forward relative to the fork shaft axis.
    Is the axis of the front wheel in the direction of travel further forward, d. H. If the fork has a larger pre-bend, so there is a smaller caster. This makes the bike more agile. If the axle is further back in the direction of travel, d. H. closer to the longitudinal axis of the steerer tube, so the bicycle fork has a lower pre-bend. This would result in a larger caster, so the bike runs quieter. This is particularly advantageous for fast downhill skiing.
    The object of the invention is to provide a bicycle fork, by which an improvement in the handling of the bicycle can be achieved.
    The object is achieved according to the invention by a bicycle fork according to claim 1.
    By the bicycle fork according to the invention changing the pre-bend or changing the caster is possible. The bicycle fork according to the invention thus makes it possible to adjust the driving behavior of the bicycle.
    The bicycle fork invention has two connected via a bicycle bridge fork legs. The bicycle bridge is preferably connected to a steerer. In particular, it is an integrally formed bicycle fork made of fiber-reinforced plastic such as carbon. The two fork legs have at the respective dropouts a recess for receiving a front wheel axle. The recesses are usually downwards, d. H. in the direction of the roadway open slots, so that the front wheel axle can be inserted from below and fixed in particular in the dropouts of the bicycle fork via a quick release. According to the invention, the recesses are designed such that it is possible to adjust the front wheel axle, in particular in the longitudinal direction of the frame, d. H. to fix in the direction of travel in at least two different positions. This makes it possible, for example, to fix the front wheel axle in a first front and a second rear position in the recesses. By fixing in the front position of a bicycle fork with greater pre-bend and thus smaller wake is realized. This increases the maneuverability of the bicycle. When fixing the front wheel axle in a rear position, the pre-bend is reduced, or the caster larger. This increases the smoothness of the bike.
    In a first embodiment, the recesses, at least in the area in which the front wheel axle is fixed, a width, d. H. an extension in the frame longitudinal direction, on, which is greater than the diameter of the front wheel axle. This makes it possible to move the front wheel axle within the recess in the frame longitudinal direction. Depending on 1/10 Austrian Patent Office AT 13 011 Ul 2013-04-15
    Positioning the front wheel axle, the remaining recess can be closed by a securing element or the like. For example, a correspondingly shaped part made of plastic or a metal alloy can be inserted into the remaining recess in order to avoid unintentional displacement of the front wheel axle into the respective other position. In this embodiment, the recesses may be formed such that they are downwardly open, slot-shaped recesses, which have over their entire width a greater width than the diameter of the front wheel axle. In particular, it is also possible that the recesses have the usual width at their opening, which is only slightly larger than the diameter of the front wheel axle, wherein the recesses then expand upward or at least have a bulge extending in the frame longitudinal direction. In side view, the recess may for example be P-shaped or T-shaped. In a P-shaped recess, the front wheel axle can be moved in the example in or against the frame longitudinal direction facing bulge or straight from below, without lateral displacement are inserted into the excavation. A corresponding displacement of the front wheel axle forward or backward is possible with a T-shaped recess. In this case, it is again preferred that the remaining opening of the recess is closed by a securing element in order to avoid unintentional displacement of the front wheel axle.
    In a particularly preferred embodiment, a positioning element is arranged in each case in the recesses. Here, the recesses have at least partially a greater width than the diameter of the front wheel axle. The positioning element is designed such that it ensures a defined position of the front wheel axle. The positioning elements are removable from the recesses and interchangeable, for example, by other positioning elements. The different positioning elements are in this case designed such that in this way different positions of the front wheel axle are realized. For this purpose, the positioning elements preferably openings, which are in particular slit-shaped, on. Through the two openings, the front wheel axle can be inserted through or inserted from below. The openings of the positioning thus form the conventional recesses of dropouts in bicycle forks. In this case, the positioning elements are preferably designed such that they completely fill in particular the recesses enlarged according to the invention at the dropouts. By simply replacing the positioning elements thus different positions of the front wheel axle and thus a different caster of the front wheel axle can be realized in a simple manner. Depending on the preference of the user and / or the current purpose of the bicycle can thus be easily adapted to the driving behavior.
    In a particularly preferred embodiment, the positioning elements are designed such that one and the same positioning can be used in different positions in the recess of the dropouts. In particular, it is possible in this case to rotate the positioning element by 180 °, so that in one position of the positioning element an opening for receiving the front wheel axle is arranged further forward and in another position further back. A corresponding arrangement of the positioning elements in different, by 180 "rotated positions can be done in particular by a reversal of the left and right in the direction of travel positioning with simultaneous rotation by 180 0 about a substantially vertical axis.
    The positioning elements are preferably fixed in each case via a fastening element such as a screw in the respective dropout of the fork legs. An attachment can for example be made via fasteners such as locking elements and the like. In particular, for stiffening the dropouts of the fork legs is preferably in this case each a recess forming insert or holding element which is preferably made of metal, is provided. In particular, in the use or holding element can be done a secure attachment of the corresponding positioning. In particular, the insert or holding element may have a threaded bore into which a screw for fastening the positioning element can be screwed. For example, made of aluminum 2/10 Austrian Patent Office AT 13 011 Ul 2013-04-15
    Retaining element may further comprise a threaded insert such as a heli-coils to allow frequent assembly. The positioning element such as the screw is in this case preferably arranged such that it is screwed from below into the holding element, or is fixed in this. The screw head in this case holds the positioning element, wherein the screw head is preferably arranged in a counterbore, so that a concern of the front wheel axle is avoided on the screw head.
    In a particularly preferred embodiment, the positioning element in a side view is substantially L-shaped or hook-shaped. When a positioning element is inserted into the recess, one leg is aligned substantially vertically and the other upper leg is aligned substantially horizontally. Thus arises only when the positioning element is inserted into the particular slot-shaped recess, the slot for receiving the front wheel axle. The slot is thus bounded on the one side laterally by a side wall of the vertical leg of the positioning and on the other hand by a side wall of the recess. In the preferred embodiment, the upper abutment surface of the front wheel axle forms the vertical leg of the positioning element.
    This has the advantage that in this area, d. H. in the region of the horizontal leg, the fastener for the screws can be provided. The design of the positioning elements which is substantially L-shaped in cross-section thus has the advantage, on the one hand, that the positioning element has a small width, since the side walls of the slot-shaped recess need not be formed by the positioning elements for the axis. In addition, the L-shaped configuration of the positioning elements has the advantage that a simple attachment over the substantially horizontal leg, in particular in the dropouts provided holding elements made of metal is possible.
    Preferably, the positioning elements, in particular the horizontal legs in a substantially L-shaped configuration on an arcuate, in particular circular axis-contact surface. This side view, in particular circular arc-shaped axle contact surface is used for flat contact of the front wheel axle. The arc of the axle contact surface is in this case for example in the range of 90 ° -180 °, in particular 120 ° -140 °. In a particularly preferred embodiment, the positioning element in the region of the contact surface on a through hole for performing the fastener with the screw. The through hole is thus preferably oriented substantially vertically and preferably has a recess for receiving the screw head. Preference is given here to the use of Allen screws. By such Achsumschlingung a secure positioning of the front wheel axle is guaranteed. In particular, a horizontal alignment of the front wheel axle is ensured.
    In order to ensure a secure fixing of the positioning, it is particularly preferred that the positioning elements two, in the direction of the fork bridge, d. H. have upwardly facing clamping surfaces. The width of the positioning thus decreases upward. The recesses provided in the dropouts or in the retaining elements preferably have corresponding clamping surfaces.
    Upon insertion of a positioning from below into the recess, the clamping surfaces thus come into contact. Fixing the positioning element with the aid of the fastening element, such as a screw, results in a positive clamping. This is the case in particular when the fastening element is an element by which the positioning element is pulled further upwards in the direction of the triple clamp. This is done in particular by a screw which is screwed into a vertical bore in the dropout or in the retaining element. To compensate for manufacturing tolerances and to ensure a secure clamping, a gap is provided between an upper side of the positioning and an inner side of the recess. The positioning is thus not with its top on the inside of the recess, but only on the clamping surfaces.
    By providing the positioning element according to the invention or the corresponding configuration of the recesses, it is possible to change the caster by more than 3 mm, in particular more than 4 mm, and particularly preferably more than 5 mm. In a preferred embodiment, this is done by simply rotating the positioning by 180 0 about a vertical axis, preferably at the same time an exchange of the left with the right positioning is made.
    The possibility of changing the tail according to the invention, the driving characteristics of the bicycle are easily changeable, since even a small change in the caster significantly changes the driving characteristics. In particular, it is thus possible to optimally match the bicycle components by changing the caster. For example, this can also be done to adapt to the rigidity of the wheels. Thus, it may be particularly advantageous to adjust the caster when using other wheels.
    The invention will be explained in more detail with reference to preferred embodiments with reference to the accompanying drawings.
    Figure 2 is a schematic plan view of a bicycle fork, a schematic perspective view of the dropouts of the fork legs of a bicycle fork, a schematic partially 1 is a sectional side view of a dropout of the wishbone in the direction of the arrow III in FIG. 1, a schematic exploded perspective view of the dropout and of the positioning element, FIGS. 5 and Figure 6 is a schematic side view of a dropout of a fork leg of a bicycle fork of an alternative embodiment of the invention; and Figure 7 is a schematic side view of a dropout of a fork leg of a bicycle fork of another alternative embodiment of the invention.
    A bicycle fork, which is in particular integrally formed, has a steerer 10. About a fork bridge 12 of the steerer tube 10 is connected to two fork legs 14. At dropouts 16 of the fork legs 14, a fastening of the front wheel axle of the front wheel takes place.
    In a first, particularly preferred embodiment of the invention (FIGS. 2-4), a recess 18 is provided in the dropouts 16.
    The recess 18 is defined essentially by the two side walls 20 and an inner wall 22. The recesses 18 have in the longitudinal direction or direction of travel 24 a greater width b than conventional recesses on dropouts of a bicycle fork. This makes it possible in this embodiment according to the invention to arrange a positioning element 26 in the recess 18. The positioning element 26 is substantially L-shaped or hook-shaped. By the positioning member 26, the recess 28 is partially filled, so that in the illustrated embodiment, a slot-shaped downwardly open opening 28 is formed. In the opening 28 takes place from below as usual inserting the front wheel axle. This is fixed for example by a quick release, wherein the inside of the quick release, as outlined by the circle 30, covers part of the positioning element 26 as well as a part of a holding element 32. The holding element 32 is arranged in the dropout 16 and in particular made of aluminum. When using a quick release this additionally fixes the positioning elements 26th
    The positioning member 26 does not completely surround the slot-shaped opening 28 for receiving the pre-derradachse. Rather, the opening 28 is on the one hand formed by a side wall 34 of a substantially vertical leg of the positioning element 26. Furthermore, the opening 28 is formed by the inner wall 20 of the recess 18. An axle bearing surface 36, which is formed in the illustrated embodiment circular arc, forms the upper contact surface for the front wheel axle.
    To change the caster, the positioning member 26 can be pulled out of the recess 18 in Fig. 3 down, rotated 180 0 about a vertical axis and inserted again into the recess 18 from below. The provided in Fig. 3 on the right side vertical leg of the positioning member 26 is then arranged on the left side.
    In the preferred embodiment shown, the positioning elements have a projection 40 projecting over an outer side 38 of the positioning element 26. The projection 40, which also protrudes beyond an outer side 42 of the dropout or of the retaining element 32, serves to prevent the front wheel axle from slipping out of the slot 28 even when the quick release is loosened slightly. This is realized in that the sketched by the circle 30 part of the quick release bears against the lug 40 and only at very wide open quick release the front wheel can be pulled down from the recess 28.
    When changing the position of the positioning elements 26 thus preferably takes place not only a rotation by 180 °, but at the same time also a replacement of the left and the right positioning member 26 as shown in Fig. 2 by the arrow 44. This ensures that the projection 40 always faces outward and fulfills its corresponding security function.
    For fixing the positioning elements 26 in the holding elements 32 screws 46 are provided in the illustrated embodiment as fastening elements. The screws 46 are screwed from below into a threaded hole 48 which is arranged in the holding element 32. For this purpose, the positioning element 26 has a through bore 50 in a substantially horizontal leg. This also has an extension 52 for receiving a screw head 54. The screw head 54 thus does not protrude beyond the axis abutment surface 36.
    For clamping holding the positioning member 26 in the recess 18, the positioning element two upwards, d. H. in the direction of the fork bridge 12 facing each other clamping surfaces 56. The clamping surfaces 56 abut against corresponding clamping surfaces 58. In order to ensure a secure clamping of the positioning element 26 when screwing in the screw 46, a gap is also formed between the inside 22 of the recess 18 and the top side 60 of the positioning element 26. The gap preferably has a gap width of 0.1 to 0.3 mm.
    To fix the positioning element 26 in the recess 18, the positioning element 26 (FIG. 4) is inserted from below into the recess 18. Subsequently, the screw 46 is passed through the passage opening 50 of the positioning element and the screw 46 is screwed into the threaded bore 48. In the same way, the positioning element 26 can also be fixed in the recess 18 in a position rotated 180 ° around a vertical axis. In this case, it is preferable to swap the left and right positioning elements to ensure that the lugs 40 protrude outward.
    In an alternative embodiment (Figures 5, 6) may be provided in a dropout 16 of the fork legs 14 and a side view of a P-shaped recess 62. In the recess 62, a securing element 64 (FIG. 5) and a securing element 66 (FIG. 6) can be arranged. Depending on which securing element is provided, a recess 68 (FIG. 5) or a recess 70 (FIG. 6) for receiving the front wheel axle remains. This also makes it possible to include the front wheel axle in two different positions.
    This is also possible in a further embodiment (FIG. 7). Here, in the dropout 16 of the bicycle fork 14, a recess T-shaped in side view 72 is provided
    权利要求:
    Claims (13)
    [1]
    Austrian Patent Office AT 13 011 Ul 2013-04-15 hen. The recess 72 has two lugs 74, 76, wherein the front wheel axle can be arranged in one of the two recesses. This also makes it possible to arrange the front wheel axle in different positions. The remaining area can in turn be filled by a securing element corresponding to the elements 64, 66, to ensure an unintentional displacement of the front wheel axle. Claims 1. Bicycle fork, in particular road bike fork, with two fork legs (14) connected to each other via a fork bridge (12) and to the respective dropouts (16) of the fork legs (14) recesses (18, 62, 72) for receiving a front wheel axle characterized in that the recesses (18, 62, 72) are formed such that the front wheel axle, in particular in the frame longitudinal direction (24) is fixable in at least two different positions.
    [2]
    2. bicycle fork according to claim 1, characterized in that the recesses (18) are formed such that a positioning element (26) can be arranged, which can preferably be arranged in different positions in the recess (18) and / or is interchangeable, to allow different positions of the front wheel axle.
    [3]
    3. bicycle fork according to claim 2, characterized in that the positioning elements (26) in each case via a fastening element (46) in particular a screw in the respective dropout (16) of the fork legs (14) are fixed.
    [4]
    4. bicycle fork according to one of claims 1 -3, characterized in that the dropouts (16) each have a preferably hard material such as metal exhibiting holding element, wherein the respective recess (18) in the holding element (32) is provided.
    [5]
    5. bicycle fork according to claim 3 or 4, characterized in that the fastening element (46) is fixed in the holding element (32).
    [6]
    6. bicycle fork according to one of claims 2-5, characterized in that the positioning element (26) is formed in side view substantially L-shaped.
    [7]
    7. Bicycle fork according to one of claims 2-6, characterized in that the positioning element (26) pointing in the direction of the fork bridge (12), arc-shaped in particular circular arc-shaped axle-contact surface (36).
    [8]
    8. Bicycle fork according to claim 7, characterized in that the axle abutment surface (36) forms an arc of 90 ° to 180 0, in particular 120 ° to 140 0th
    [9]
    9. bicycle fork according to claim 7 or 8, characterized in that the positioning element (26) in the region of the axial abutment surface (36) has a through hole (50) for passing through the fastening element (46).
    [10]
    10. bicycle fork according to one of claims 2-9, characterized in that the positioning element (2) in the direction of the fork bridge (12) converging clamping surfaces (56), the anlie-gene on corresponding clamping surfaces (58) of the recess (18) ,
    [11]
    11. Bicycle fork according to one of claims 2-10, characterized by a gap between an upper side (60) of the positioning element (26) and an inner side (22) of the recess (18). 6/10 Austrian Patent Office AT 13 011 Ul 2013-04-15
    [12]
    12. Bicycle fork according to one of claims 1-11, characterized in that by arranging the front wheel axle in different positions, in particular by turning the positioning elements (26) a tracking change by more than 3 mm, preferably more than 4 mm and more preferably more than 5 mm he follows.
    [13]
    13. Bicycle fork, according to one of claims 2-12, characterized in that in particular both positioning elements (26) each have an outwardly facing lug (40) to prevent Flerausrutschen the front wheel axis down. 3 sheets of drawings 7/10
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    同族专利:
    公开号 | 公开日
    EP2399812B1|2018-11-07|
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    ES2709753T3|2019-04-17|
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    DE202010009492U1|2011-10-24|
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    法律状态:
    2020-09-15| MK07| Expiry|Effective date: 20200731 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202010009492U|DE202010009492U1|2010-06-24|2010-06-24|bicycle fork|
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