• 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:
    The present invention relates to a chain casing for enclosing a chain encircled around a main sprocket and driven gear, such as comprising two free chain members, a chain pulling part and a chain return part, preferably a vehicle, such as a bicycle, the chain casing comprising: - a main sprocket enclosure element for the enclosing the chain at the location of the main gear, such as a pedal gear; - a chain pulling part enclosing element for enclosing at least a part of a pulling part of the chain between the main gear and the driven gear, - a chain return part enclosing element for enclosing at least one receding part of the chain between the main gear and the driven gear; - a chain tensioner casing element for enclosing a chain tension assembly with part of the chain arranged thereby. The present invention further relates to a chain tensioning assembly, preferably fitting into the chain guard.
    公开号:NL2020813A
    申请号:NL2020813
    申请日:2018-04-23
    公开日:2018-10-29
    发明作者:Jonan Midas Carlier Ties
    申请人:Vanmoof Bv；
    IPC主号:
    专利说明:

    Netherlands Patent Office © 2020813 (21) Application number: 2020813 © Application filed: April 23, 2018 © A PATENT APPLICATION @ Int. CL:
    B62J 13/04 (2018.01) B62M 9/16 (2018.01)
    (30) Priority: (71) Applicant (s): April 21, 2017 NL 2018764 VANMOOF B.V. in Amsterdam. (41) Application registered: (72) Inventor (s): October 29, 2018 Ties Jonan Midas Carlier in Amsterdam. (43) Application published:October 29, 2018 (74) Agent:ir. F.E. Hoeben in Hilversum. @ CHAIN CABIN AND CHAIN PANEL
    The present invention relates to a chain guard for enclosing a chain surrounded by a main sprocket and driven gear, such as comprising two free chain members, a chain pulling part and a chain return part, preferably a vehicle, such as a bicycle, the chain guard comprising:
    - a main gear enclosing element for encasing the chain at the main gear, such as a tread gear;
    - a chain pulling part enclosing element for enclosing at least a part of a pulling part of the chain between the main gear and the driven gear,
    - a chain return part casing element for enclosing at least one return part of the chain between the main gear and the driven gear;
    - a chain tensioner casing element for enclosing a chain tension assembly with part of the chain arranged thereby.
    The present invention further relates to a chain tensioning assembly, preferably fitting into the chain guard.
    NL A 2020813
    This publication corresponds to the documents originally submitted.
    CHAIN CABIN AND CHAIN PANEL
    The present invention relates to a chain casing for enclosing a chain that is wrapped around a main sprocket and driven gear, such as comprising two free chain parts, a chain pulling part and a chain return part, preferably a vehicle, such as a bicycle. Furthermore, the present invention relates to such a chain guard containing a chain tensioner. The present invention further relates to a chain tensioning assembly for providing a tensioning action to a chain part, such as the chain pulling part or the chain return part.
    It is known to provide a chain guard on a bicycle, the chain guard protecting the clothing of the riding person. Furthermore, it is known here that such a chain guard provides sufficient space for the chain to move therein, which requires a fairly large chain guard since the chain varies in length during use and continuous adjustment of the chain is undesirable. To this end, a solution has been provided according to the state of the art in the form of a very tight housing which, during use, rests on the chain and thereby causes wear and noise. The present inventor has also provided a tight chain guard according to the state of the art which is supported at the bottom bracket of the bicycle by a support so that it is always arranged above the chain and therefore does not make contact with it during use.
    In order to improve such a state of the art, the present invention provides a chain casing for enclosing a chain encircled by a main gear and driven sprocket, such as comprising two free chain members, a chain pulling part and a chained back part, preferably of a vehicle, such as a bicycle, the chain guard comprising:
    - a main gear enclosing element for encasing the chain at the main gear, such as a tread gear;
    - a chain pulling part enclosing element for enclosing at least a part of a pulling part of the chain between the main gear and the driven gear,
    - a chain return part casing element for enclosing at least one return part of the chain between the main gear and the driven gear;
    - a chain tensioner casing element for enclosing a chain tension assembly with part of the chain arranged thereby.
    It is an advantage of such a chain guard according to the present invention that it can be used in combination with a chain tensioner assembly and a hub gear while the chain is arranged in the chain guard where the known use of a chain tensioner in combination with a derailleur gear is such that chain guard is not applicable due to the movement of the chain in the vertical direction. This provides as a first advantageous effect that the very tight chain guard is also functional during the chain lengthening during use without undesired chain contact. As a result, for example, fenders for making contact between the chain and the previous chain guard of the present inventor are not necessary. This also reduces or substantially prevents noise from contact between the chain and the chain guard. An object of the present inventor achieved by the present invention is to provide a bicycle with a chain for which no maintenance is required from the delivery within a wide range of wear of the chain.
    According to a first preferred embodiment according to the present invention, the chain guard comprises the chain tensioning assembly for providing a tensioning action to a chain part, such as the chain pulling part or the chain return part, the chain tensioning assembly comprising:
    - a frame tube attachment element for attaching the chain tension assembly to a frame tube, preferably a lower rear fork,
    - a tensioning arm for providing a tensioning action with respect to the chain, wherein the tensioning arm is movably arranged with respect to the frame tube mounting element,
    - biasing means for providing a bias to the tensioning arm,
    - a first guide wheel and preferably a second guide wheel for guiding the chain, wherein
    - at least one guide wheel is arranged on the tensioning arm to provide the tensioning action with respect to the chain, and wherein
    - the first guide wheel and the preferred second guide wheel are functional for guiding one of the chain parts during tensioning during use as a tensioned part, preferably the chain return part, such that the tensioned part is longer than the other part.
    Such a preferred embodiment provides the advantage that a chain tensioning assembly can be used in combination with a chain guard according to the present invention. The chain is preferably substantially surrounded by the chain tensioner element at the location of the chain tensioning assembly. The sides of the gear wheels are furthermore preferably substantially encased by the chain tensioner enclosure element.
    By means of, for example, a passage opening for a guide wheel, it is realized that the advantageous arrangement of the chain in the chain guard can be combined with a movability of at least one guide wheel.
    According to a further preferred embodiment, the chain guard, preferably the clamping assembly thereof, comprises the first and the second guide wheel, wherein preferably a first of the first guide wheel and the second guide wheel are arranged on a first side of the chain during use and the second of the chain first and the second guide wheel during use is arranged on a second side of the chain. Hereby it is advantageously realized that the path along which the chain runs between the tensioning assembly and the front sprocket is carried out substantially fixedly, while the path between a chain tensioning assembly and the rear sprocket is somewhat variable for running the chain under bias in both a state in which it is mounted as a slightly stretched state after energy consumption thereof. It is equally envisaged that the trajectory between the chain tension assembly and the front sprocket is variable and the trajectory between the chain tension assembly and the rear sprocket is fixed or that both trajectories are variable, but a fixed trajectory between the front sprocket and the tension assembly is currently provided as the most advantageous preferred embodiment.
    According to a further preferred embodiment, the chain guard comprises a front support for supporting the chain guard at the front thereof at the driving gear of the bicycle, preferably for supporting the chain guard on a bottom bracket tube of the bicycle. A distance between the chain and / or the driving gear of the bicycle relative to the chain housing is hereby realized in an advantageous and effective manner.
    The chain casing furthermore preferably comprises a rear sprocket element. This provides protection for the chain on site. Preferably, the rear sprocket enclosure element provides a wider passage space between the rear sprocket and the chain tension assembly than the passage space in the chain pull part enclosure element or the chain return part encapsulation element for allowing the chain to run in a plurality of tensioning positions of the chain tension assembly. A higher space is provided here at the location of the chain tensioning assembly than at the location of the rear sprocket. Such a walk-through space extending in height therefore provides an advantageous clearance for the chain between the chain tensioning assembly and the rear sprocket, or possibly the front sprocket.
    According to a further preferred embodiment, the chain casing comprises coupling means for coupling casing elements to the chain tension assembly, preferably the chain return part casing element, the rear sprocket casing element and / or the chain tensioner casing element. This makes mounting on the bicycle advantageously feasible. Furthermore, such coupling means preferably provide a certain degree of adjustability of the length of the chain guard.
    Preferably, the tensioning arm is rotatably arranged with respect to the frame and / or frame tube mounting element about a center of rotation of the first or the second guide wheel. Preferably, the tensioning arm is rotatably arranged with respect to the frame and / or frame tube mounting element about a rotation arm and between the first and the second guide wheel. The tensioning arm herein functions advantageously as a lever or a tilting lever with which tension is applied to the chain. It is also realized that the tensioned part of the chain, preferably the return part of the chain, is longer than the other part of the chain, preferably the tension part of the chain.
    According to a further preferred embodiment, the chain guard comprises a prestressing member, such as a spring, such as a torsion spring. With such a pre-tensioning member, the pre-tensioning is advantageously provided for the purpose of tensioning the chain.
    The chain tensioner element is furthermore preferably arranged at the location of the chain return part. During the driving of the bicycle by means of the chain, the chain return part experiences a relatively small tension because the pedaling force attracts the rear sprocket from the front sprocket with the chain pull part. Tensioning of the chain by means of the chain tensioning assembly therefore takes place advantageously at the return part of the chain.
    According to a further preferred embodiment, the chain guard comprises a mounting bracket. Advantageous of such a mounting bracket is that with this chain guard and / or the chain tensioning assembly thereof can advantageously be supported in the following ways.
    The mounting bracket furthermore serves for adjustable or adjustable arrangement of the guide wheels relative to the frame tube mounting element.
    As a result, it is advantageously realized that the guide wheels can be aligned with the chain. The mounting bracket furthermore preferably serves to support the chain guard or an enclosure element thereof, such as the chain tensioner enclosure element.
    The mounting bracket furthermore preferably comprises support means for supporting the chain guard or an enclosure element thereof, such as the rear sprocket enclosure element. This mounting bracket thus advantageously comprises a support for supporting the rear of the chain guard where the front support supports the front of the chain guard.
    The chain tension assembly furthermore preferably comprises support means for supporting the chain guard or a casing element thereof, such as the chain return part casing element.
    According to a further preferred embodiment, the tensioning arm can be mounted on a mounting member, such as a mounting eye, arranged on the frame, preferably a lower fork thereof. As a result, direct mounting of the tensioning arm to the frame is advantageously realized.
    The chain casing or treatment element thereof is furthermore preferably attachable to a fixing member arranged on the frame, preferably a lower rear fork thereof. This results in a separate attachment of the chain guard with respect to the attachment of the tensioning arm or the chain tensioning assembly.
    The fixing member is here further preferably attached to the frame, such as the lower rear fork thereof, by means of a screw connection, preferably by means of a hidden screw connection by means of a recess in the lower rear fork, preferably arranged in the inner side of the lower rear fork. An advantage hereof is that an easily attachable assembly is realized from the chain guard, the tensioning arm and or the chain tensioning assembly. In the case of the said attachment in a recess of the lower fork, this attachment is both easily applicable and invisible from the chain guard, albeit of the bicycle. This attachment is also hidden behind the wheel from the other side of the bicycle.
    According to a further preferred embodiment, the fixing member, such as the fixing eye, is fixed to the frame, such as the lower fork thereof, by means of a weld connection. As a result, it is advantageously realized that the strength of the connection has already been realized and determined during the manufacture of the lower fork or an end part thereof. This makes later assembly easier and the reliability under controllable conditions in relation to the manufacture of the lower fork or part thereof reliably achieved.
    According to a further preferred embodiment the tensioning arm extends from a mounting point and / or a point of rotation thereof relative to the frame substantially backwards towards a rear axle of the bicycle. Hereby it is advantageously realized that the chain pulls on the arm in the direction of movement thereof instead of pushing. A reverse installation in which the chain pushes against the direction of extension of the tensioning arm is however also provided as a variant.
    According to a further preferred embodiment, the chain guard comprises at least one passage opening for a guide wheel. An advantage of such a passage opening is that the chain guard allows a relatively large movement of movement for the tensioning arm and therefore for the chain around the guide wheels. This makes a compact construction of the chain tensioner element possible. Furthermore, a high degree of elongation of the chain through wear becomes permissible without further maintenance.
    A further aspect according to the present invention relates to a chain tensioning assembly for providing a tensioning action to a chain part, such as the chain pulling part or the chain return part, the chain tensioning assembly comprising:
    - a frame tube attachment element for attaching the chain tension assembly to a frame tube, preferably a lower rear fork,
    - a tensioning arm for providing a tensioning action with respect to the chain, wherein the tensioning arm is movably arranged with respect to the frame tube mounting element,
    - biasing means for providing a bias to the tensioning arm,
    - a first guide wheel and preferably a second guide wheel for guiding the chain, wherein
    - at least one guide wheel is arranged on the tensioning arm to provide the tensioning action with respect to the chain, wherein
    - the first guide wheel and the second guide wheel are functional for guiding one of the chain parts as tensioned part during use under pretension, preferably the chain return part, such that the tightened part is longer than the other part, and
    - the frame tube attachment element for attaching the chain tension assembly to the frame tube functions in conjunction with a frame tube attachment means, such as the lower fork.
    Such a chain tensioning assembly according to the present invention, in particular in combination with the chain guard according to the present invention, provides the advantages and achieved objectives according to the invention as described with reference to the above aspect.
    Preferably, this chain tension assembly comprises one or more features as described in this description according to the present inventions, preferred embodiments.
    Further advantages, features and details of the present invention will be described in greater detail below with reference to one or more preferred embodiments with reference to the attached figures. Similar but not necessarily identical components of different preferred embodiments are designated by the same reference numerals.
    FIG. 1 is a perspective view of a first preferred embodiment of the present invention. T
    FIG. 2 is a schematic side view of the preferred embodiment of FIG. 1.
    FIG. 3 is a top view of the preferred embodiment of FIG. 1 in assembled condition.
    FIG. 4 is a side view of the preferred embodiment of FIG. 1 in assembled condition.
    FIG. 5 relates to an exploded view of a detail of the preferred embodiment according to FIG. 1
    FIG. 6 is a cut-away bottom view of the detail according to FIG. 5.
    FIG. 7 is a cut-away bottom view of the detail according to FIG. 5 in assembled condition.
    FIG. 8 relates to a detail of the preferred embodiment according to FIG. 1. FIG. 9 relates to a detail of a further preferred embodiment.
    FIG. 10 relates to a preferred embodiment of FIG. 9 in a different perspective with a further preferred embodiment of a clamping assembly.
    FIG. 11 relates to a perspective view of a further preferred embodiment of a chain tension assembly according to the present invention.
    FIG. 12 is a perspective view of the preferred embodiment of FIG. 11.
    FIG. 13 relates to a further perspective view of the preferred embodiment according to FIG. 11 assembled to a lower rear fork of a bicycle.
    FIG. 14 relates to a representation of a further preferred form of form.
    FIG. 15 relates to two perspective views of a further preferred embodiment according to the present invention arranged on a lower fork of a bicycle.
    FIG. 16 relates to two cut-away views in perspective of the preferred embodiment according to FIG. 15.
    A first preferred embodiment (Fig. 1) according to the present invention relates to a chain case 1. This comprises a casing element 5 enclosing at least a part of a pulling part of the chain between the main gear and the driven gear. Furthermore, it comprises a casing element 4 for the main gear enclosing the chain at its location. A further wrapping element 3 wraps the chain or a part thereof receding from the main sprocket to the rear sprocket. Around the rear sprocket is the covering part 6 surrounding the chain at the location of the rear sprocket.
    The enclosing element 2 serves to enclose the chain at the location of a chain tensioning assembly 11. The chain tensioning assembly has two guide wheels, the guide wheel 13 and the tensioning wheel 12. The guide wheel 13 serves to position the chain return part 11 relative to the chain tensioning assembly 11 with respect to the drive gear 9. This makes it possible to realize that the chain can run in a straight line between the drive gear 9 and the guide wheel 13. This makes it possible to make the chain return part enclosure element very tight or to make it very much slim without the chain return part contacting makes with the chain return part wrapping element.
    An important object of the invention is hereby achieved, namely a very slim chain guard without contact with the chain and all its drawbacks.
    Similarly, the rear sprocket 9 'serves to position the chain pull part relative to the drive sprocket 9. This position realizes that the chain pull part can be arranged in a very slender or very tight chain pull part casing element 5.
    For both the chain pull part and the chain return part it is important for the correct arrangement in the respective casing elements that the chain can be kept under tension.
    This is achieved by the operation of the chain tensioning assembly 11. The chain tensioning assembly functions by keeping the tensioning wheel 12 directed upwards under pre-tension, so that the return part of the chain that has the slightest tension remains tensioned because it continues to travel a longer distance with respect to the chain tensioning part and therefore greater length. It is alternatively foreseeable that the chain tension assembly is arranged in the chain pull part.
    Since a slender design of the chain guard is preferred, the chain tensioner enclosure element has openings 8, 8 ', 8' 'for passage of parts of the guide wheels.
    The chain guard is mounted relative to the bottom bracket tube by means of a support element 7, 7 '(Fig.
    4). This preferably ensures that the front of the chain guard is fixed relative to the bottom bracket or the bottom bracket tube of the frame. This ensures that the chain runs completely free with respect to the inside of the main gearwheel element 4.
    At the rear, the chain guard is fixed by means of a support arm 23 'with a positioning hole 24 of mounting bracket 23 with respect to the chain tensioning assembly which in turn is fixed with respect to the frame, in particular with regard to the lower fork.
    For this purpose, the chain tensioning assembly comprises a mounting block 21 which is mounted by means of two bolts 22 to a preferably lower rear fork 41 with a recess or cavity 42 (Fig. 13) of the bicycle. For an alignment between the guide wheels 12, 13 and the chain, the orientation of the mounting block 21 relative to the lower rear fork is adjustable by means of the elongated shape of the openings 35. The mounting bracket 23 is fastened to the mounting block 21 by means of two bolts 24. Spacers, such as spacer rings 25, are used for realizing the correct alignment between the chain and the guide wheels. The tensioning arm 14 is rotatably attached to the mounting bracket 23 by means of a bolt 26. Between the mounting bracket 23 and the tensioning arm 14 a torsion spring 27 is arranged for keeping the tensioning arm and thus the tensioning wheel under bias. For the purpose of the torsional action of the torsion spring, a fixation hole 34 is provided in the bracket 23 and a fixation slot 33 in the tensioning arm.
    The tensioning wheel 12 is mounted as a guide wheel on the free end of the tensioning arm 14 mounted by means of a bolt 29 and a nut 29 '. The guide wheel 13 is also mounted by means of the bolt 26 with a nut 26 'with respect to the non-free end of the tensioning arm and the mounting bracket.
    The guide wheels are preferably mounted by means of ball bearings 31, 32. The one-sided mounting of the guide wheels provides the further advantage that the assembly and placement of the chain is relatively simple. Alternatively, it is provided that the guide wheels are arranged between a double clamping arm to provide a respective stability.
    In the figures 9-14 alternative arrangements of these mentioned parts are shown.
    The preferred embodiment of FIG. 9 and 10 provides an alternative way of constructing the chain tensioner casing element and the rear sprocket casing element. Both of these are partially joined with a shell member 91 forming the underside of the chain tensioner casing element and a part of the rear sprocket casing element. A further shell portion 92 forms the top of the chain tensioner enclosure element. Both of these can be assembled together by means of snap connection elements 94 as arranged on the further shell part 92 for cooperation with respective receiving cams (not shown) of the shell part 91. Further, a school raise 95 is provided attachable to the screw 96 through the opening 97. The top of the rear sprocket housing element is formed by bend element 98.
    The preferred embodiment of FIG. 11-13 relates to the aforementioned variant with the double clamping arm. Here, the guide wheel 13 and the tensioning wheel 12 are arranged between the double-design tensioning arm. The tensioning arm is in this case made up of a side 14 'and a side 14. Such an arrangement provides, as mentioned, an advantageous structural strength to the sub-assembly comprising the tensioning arm with the guide wheels in assembly. The two arms are hereby connected to each other on the side of the tensioning wheel by means of a screw 29 'which is screwed into an internal threaded end part 29 of the tensioning arm side 14. An attachment on the side of the guide wheel 13 is realized by means of a screw 26' for screwing thereof in a sleeve 26 which is also provided with an internal thread. This bush 26 forms part of the mounting elements or mounting bracket 23 'which functions as a connection between the tensioning arm and the mounting block 21.
    The preferred embodiment of FIG. 15 and 16 relates to a variant in which the clamping arm is directly attached to a support 44 by means of the frame tube mounting element, which itself is directly attached to the lower rear fork 41½ in the variant shown by means of welding, alternatively provided by means of a screw connection. The frame tube attachment element here essentially concerns the screw connection made by means of the screw 46 and the nut 46 'with which the tensioning arm 14 can be attached to the support 44.
    A housing 47 is furthermore provided here for the torsion spring 27 for keeping the tensioning arm 14 under tension. This housing furthermore serves as a distance holder for providing a correct alignment between the guide wheels and the chain. The guide wheel 13 is also attached to the tensioning arm 14 by means of the screw connection comprising the screw 46 and the nut 46 '. The tensioning wheel 12 is connected to the tensioning arm via a screw connection to the screw 29. The guide wheels are provided with a bearing 32 for bearing with respect to the tensioning arm and the mounting therewith.
    Although the description of this document is directed to the chain tension assembly being arranged in the chain return section, it is also intended to be arranged in the chain tension section and such an arrangement is within the scope of the appended claims. A chain part here relates to either the chain pull part and the chain return part. The chain pull part extends from the driving gear to the driven gear and the chain return part runs from the driven gear to the driving gear. In practice, the chain tensioning part is the most stressed.
    Chain tensioning assembly for providing a tensioning action to a chain part, such as the chain pulling part or the chain return part, the chain tensioning assembly comprising:
    - a frame tube attachment element for attaching the chain tension assembly to a frame tube, preferably a lower rear fork,
    - a tensioning arm for providing a tensioning action with respect to the chain, wherein the tensioning arm is movably arranged with respect to the frame tube mounting element,
    - biasing means for providing a bias to the tensioning arm,
    - a first guide wheel and preferably a second guide wheel for guiding the chain, wherein
    - at least one guide wheel is arranged on the tensioning arm to provide the tensioning action with respect to the chain, and wherein
    - the first guide wheel and the second guide wheel are functional for guiding one of the chain parts as tensioned part during use under pretension, preferably the chain return part, such that the tightened part is longer than the other part.
    In the foregoing, the present invention has been described with reference to a few preferred embodiments. Different aspects of different embodiments are considered described in combination with each other, whereby all combinations that are considered to be read by a person skilled in the art on the basis of this document are included in the understanding of the invention. These preferred embodiments are not restrictive of the scope of this document. The rights requested are defined in the appended claims.
    9c 9c 9c 9t * 9c
    权利要求:
    Claims (23)
    [1]
    CONCLUSIONS
    A chain guard for enclosing a chain surrounded by a main sprocket and driven gear, such as comprising two free chain members, a chain pulling part and a chain return part, of preferably a vehicle, such as a bicycle comprising a frame, the chain guard comprising:
    - a main gear enclosing element for encasing the chain at the main gear, such as a tread gear;
    - a chain pulling part enclosing element for enclosing at least a part of a pulling part of the chain between the main gear and the driven gear,
    - a chain return part casing element for enclosing at least one return part of the chain between the main gear and the driven gear;
    - a chain tensioner casing element for enclosing a chain tension assembly with part of the chain arranged thereby.
    [2]
    A chain guard according to claim 1 comprising the chain tensioning assembly for providing a tensioning action to a chain part, such as the chain pulling part or the chain return part, the chain tensioning assembly comprising:
    - a frame tube attachment element for attaching the chain tension assembly to a frame tube, preferably a lower rear fork,
    - a tensioning arm for providing a tensioning action with respect to the chain, wherein the tensioning arm is movably arranged with respect to the frame tube mounting element,
    - biasing means for providing a bias to the tensioning arm,
    - a first guide wheel and preferably a second guide wheel for guiding the chain, wherein
    - at least one guide wheel is arranged on the tensioning arm to provide the tensioning action with respect to the chain, and wherein
    - the first guide wheel and the preferred second guide wheel are functional for guiding one of the chain parts during tensioning during use as a tensioned part, preferably the chain return part, such that the tensioned part is longer than the other part.
    [3]
    Chain guard according to claim 1 or claim 2 comprising the first and the second guide wheel, wherein preferably a first of the first guide wheel and the second guide wheel is arranged on a first side of the chain during use and the second of the first and the second guide wheel guide wheel during use is arranged on a second side of the chain.
    [4]
    Chain guard according to one or more of the preceding claims, comprising a front support for supporting the chain guard at the front thereof at the driving gear of the bicycle, preferably for supporting the chain guard on a bottom bracket tube of the bicycle.
    [5]
    Chain guard according to one or more of the preceding claims, comprising a rear sprocket housing element.
    [6]
    Chain guard according to one or more of the preceding claims, comprising coupling means for coupling casing elements to the chain tension assembly, preferably the chain return part casing element, the rear sprocket casing element and / or the chain tensioner casing element.
    [7]
    Chain guard according to one or more of the preceding claims, wherein the tensioning arm is rotatably arranged with respect to the frame and / or frame tube mounting element about a center of rotation of the first or the second guide wheel.
    [8]
    Chain guard according to one or more of the preceding claims, wherein the tensioning arm is rotatably arranged with respect to the frame and / or frame tube mounting element around a rotation arm and between the first and the second guide wheel.
    [9]
    Chain guard according to one or more of the preceding claims, comprising a biasing member, such as a spring, such as a torsion spring.
    [10]
    A chain guard according to one or more of the preceding claims, wherein the chain tensioner enclosure element is arranged at the location of the chain return part.
    [11]
    Chain guard according to one or more of the preceding claims, comprising a mounting bracket.
    [12]
    Chain guard according to claim 11, wherein the mounting bracket serves for adjustable or adjustable arrangement of the guided wheels relative to the frame tube mounting element.
    [13]
    Chain guard according to claim 11 or 12, wherein the mounting bracket serves to support the chain guard or an enclosure element thereof, such as the chain tensioner enclosure element.
    [14]
    A chain guard according to claim 11, 12 or 13, wherein the mounting bracket comprises support means for supporting the chain guard or an enclosure element thereof, such as the rear sprocket enclosure element.
    [15]
    A chain guard according to one or more of the preceding claims, wherein the chain tensioning assembly comprises support means for supporting the chain guard or a casing element thereof, such as the chain return part casing element.
    [16]
    Chain guard according to one or more of the preceding claims, wherein the tensioning arm can be mounted by means of the frame tube mounting element on a mounting member, such as a mounting eye, arranged on the frame, preferably a lower rear fork thereof.
    [17]
    A chain guard according to one or more of the preceding claims, wherein the chain guard or an enclosure element thereof is attachable to a mounting member arranged on the frame, preferably a lower rear fork thereof.
    [18]
    Chain guard according to claim 16 or 17, wherein the fixing member is attached to the frame, such as the lower rear fork thereof, by means of a screw connection, preferably by means of a hidden screw connection by means of a recess in the lower rear fork, preferably arranged in the inner side of the lower rear fork.
    [19]
    A chain guard according to claim 16 or 17, wherein the fastening member, such as the fastening eye, is attached to the frame, such as the lower fork thereof, by means of a weld connection.
    [20]
    Chain guard according to one or more of claims 2 to 18, wherein the tensioning arm extends substantially backwards towards a rear axle of the bicycle from a mounting point and / or a point of rotation thereof relative to the frame.
    [21]
    Chain guard according to one or more of the preceding claims, comprising at least one passage opening for a guide wheel.
    [22]
    A chain tensioning assembly for providing a tensioning action to a chain section, such as the chain pull section or the chain return section, the chain tension assembly comprising:
    - a frame tube attachment element for attaching the chain tension assembly to a frame tube, preferably a lower rear fork,
    - a tensioning arm for providing a tensioning action with respect to the chain, wherein the tensioning arm is movably arranged with respect to the frame tube mounting element,
    - biasing means for providing a bias to the tensioning arm,
    - a first guide wheel and preferably a second guide wheel for guiding the chain, wherein
    - at least one guide wheel is arranged on the tensioning arm to provide the tensioning action with respect to the chain, wherein
    - the first guide wheel and the second guide wheel are functional for guiding one of the chain parts as tensioned part during use under pretension, preferably the chain return part, such that the tightened part is longer than the other part, and
    - the frame tube attachment element for attaching the chain tension assembly to the frame tube functions in conjunction with a frame tube attachment means, such as the lower fork.
    [23]
    A chain tensioning assembly as claimed in claim 19 comprising one or more measures as claimed in one or more of the claims one to 18.
    -Ar
    2/15
    46 '
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    同族专利:
    公开号 | 公开日
    WO2018194459A2|2018-10-25|
    JP2020517525A|2020-06-18|
    WO2018194459A3|2018-12-20|
    CN111032504A|2020-04-17|
    US20200047837A1|2020-02-13|
    EP3612441A2|2020-02-26|
    NL2020813B1|2019-04-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR457646A|1913-04-28|1913-09-22|Rene Ravard|Bicycle housing frame|
    FR2322772B1|1975-09-08|1978-06-23|Peugeot Cycles|
    US5006094A|1989-09-06|1991-04-09|Hamlin Transmission Corporation|Self-positioning belt tensioner|
    CN2135518Y|1992-09-16|1993-06-09|顺杰实业股份有限公司|Bicycle chain cover|
    FR2750668B1|1996-07-03|1998-11-20|Savard Franck|DEVICE FOR TENSIONING AND GUIDING A CHAIN FOR CHANGING BICYCLE SPEEDS|
    US20030224891A1|2002-05-31|2003-12-04|Joe Chou|Chain casing for a bicycle|
    US7874955B2|2007-09-28|2011-01-25|Patterson Bicycle Transmission, Llc|Bicycle transmission system|
    NL1036247C2|2008-11-27|2010-05-28|Johan Hajo Hoekstra|SWITCHING SYSTEM FOR A LOW-WHEEL AND WHEEL-WHEEL EQUIPPED WITH SUCH A SWITCHING SYSTEM|
    CN202320708U|2011-11-14|2012-07-11|慈溪市羚翔车业有限公司|Simple bicycle chain tensioning device|
    CN202642017U|2012-06-26|2013-01-02|江南大学|Chain-off resistant device for bicycle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2018764|2017-04-21|
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