• 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:
    Removable alternative pedaling kit for standard frame bicycles. This patent deals with the adaptation to a conventional bicycle of an existing oscillating pedaling mechanism, to facilitate mobility in people with knee injuries, in order to be mountable and removable. The kit presented consists of a set of bars articulated with each other and a conventional bottom bracket. The mechanism is formed by two analogous parts located on both sides of the frame. Each of these contains a rocker arm, a connecting rod and a crank. The interface between frame and mechanism are the axis of the rear wheel, which coincides with the articulation in the wheel, and the bottom bracket axis that is joined to the central bar by a flange that allows to place the bottom bracket axis to the height convenient to facilitate adaptation to most standard tables. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2651195A1
    申请号:ES201631000
    申请日:2016-07-21
    公开日:2018-01-24
    发明作者:Xavier MARÍN MAYOL；Joaquim M. VECIANA FONTANET；Lluïsa JORDI NEBOT
    申请人:Universitat Politecnica de Catalunya UPC；
    IPC主号:
    专利说明:

    DESCRIPTION

    REMOVABLE KIT FOR ALTERNATIVE PEDALEO FOR STANDARD BOX BICYCLES
     5

    Technical sector

    The invention falls within the technical sector of biomechanics, more specifically in the exploitation of existing mechanisms for its use under affordable conditions, in order to facilitate mobility for people with limitations in knee flexion as well as their rehabilitation.

    Background of the invention

    In 2010, Dr. Emili Curià published his doctoral thesis entitled A modification of pedaling. I studied mechanics and biomechanics. It affected the limitation of the flexion of the genoll [1], in which a pedaling mechanism different from the conventional one is proposed. This mechanism allows replacing the cycle 20 of conventional complete pedaling with an alternative movement that implies a variation of the knee angle, defined as the angle between the femur and the tibia, less than that necessary in the case of the conventional mechanism. This paper concludes that the modification of the proposed pedaling offers people with reduced knee flexion, for various reasons, the possibility of practicing 25 rehabilitation, sports and leisure activities.
    Subsequently, Blanca Segura Villar presented a Final Degree Project Mechanical analysis of an oscillating pedaling mechanism. 3D design of a bicycle with this integrated mechanism [2] in which it is proposed to adapt this mechanism in conventional bicycles 30 by modifying its frame.
    The mechanisms that have been consulted to justify the novelty of the invention can be classified into two large groups:
    Within the first group, there are the mechanisms that proposing a circular movement for the pedals, vary the geometry of these or the plates to modify the angular range of application of the force on them, avoiding their dead spots, as well as their value , to improve the comfort of pedaling. Among these are patents ES-5 2326990-T3, ES-2101126-T3 and ES-2343971-T3.
    The second group refers to pedaling systems in which the movement of the pedals is not circular or they fail to describe a complete circumference. The patents ES-0193433-A3, ES-0224422-A1, ES-2268911-B1, WO-2014108579-A1 and ES-2027560-A6 stand out. The mechanism 10 that is used as a reference in the present invention belongs to this second group.
    All the mentioned mechanisms refer to a bicycle modified conveniently for its implementation. In no case the possibility arises that these mechanisms can be assembled and disassembled in a conventional frame bike.
    For this, the present invention focuses on the description of the system that makes it possible for the mentioned mechanism to be installed, with a reasonable number of operations, on a common bicycle without modifying its base structure. twenty


    Explanation of the invention.

    The present invention is part of the study and exploitation of 25 mechanisms that facilitate the movement through sustainable transport to people with reduced mobility of the lower extremities. In this case, it is the adaptation to a conventional bicycle of an existing oscillating pedaling mechanism, to facilitate mobility in people with joint injuries corresponding to the knee. 30

    The objective of the invention is the modification of said mechanism, whose validity for this type of injuries has been proven by other authors, for its adaptation to any conventional bicycle with the possibility of being
    user mountable and detachable. This feature allows, with a minimum number of modifications to the bicycle itself, to perform specific knee restorations.

    The kit presented for this purpose is physically constituted by a set of articulated bars and a conventional bottom bracket. The mechanism is formed by two analogous parts that are located on both sides of the frame. Each of these contains a rocker (articulated to the rear wheel axle), a connecting rod and a crank (bottom bracket).
     10
    Therefore, the connecting element between frame and mechanism is the axle of the rear wheel and the axle of the bottom bracket that joins the bar that supports the saddle by means of a flange.

    The articulation on the rear wheel coincides geometrically with the axle 15 of the wheel and the flange allows the bottom bracket to be placed at a convenient height, making it easier to adapt to most standard bicycle frames.

    As shown in the views of Figure 1, the kit presented is constituted by an alternative pedaling mechanism (1) attached through a flange (2) to the central tube of the frame (3) and an axis (4) conveniently modified.

    The alternative pedaling mechanism (figure 2), in turn, is made up of two 180 ° offset cranks (5) located one on each side of the frame. In turn, these cranks are in solidarity with a standard plate (6) articulated by means of a shaft, also standard, to the clamping flange (2).

    The cranks are articulated to two connecting rods (7) which in turn are articulated to the rocker arms (8) at the end of which are the drive pedals (9).

    Finally, the rocker arms (8) are articulated to the modified rear wheel axle (4) as shown in Figures 2 and 6.

    In order to make the kit as adaptable as possible to any standard bicycle, a double split-type flange has been designed (Figures 5 3 and 4). Both the upper flange (10) and the lower one (11) are tightened to the tube through two screws (12). To guarantee the collinearity of the flange with the axis of the tube, longitudinal projections (13) and (18) have been added, according to the axis of the tube to both parts of the split hub. In this way, the tube flange joint is capable of transmitting six reactions, three force components and three moment components, to avoid unwanted movements. Also, as shown in Figures 4 and 5, and with the following appropriate dimensions: i) the thickness of the projections defined by the difference between D and d; ii) the semidistance between flanges b; and iii) the angle β that each one of the projections forms with the axis perpendicular to the longitudinal plane of the bicycle 15 and which in turn passes through the center of the tube, it is achieved that these projections allow the mounting of the flange in tubes of different diameters as well as non-circular section tubes.

    On the other hand, the second part that achieves adaptation to any bicycle is the redesign of the rear wheel axle (figure 6). To achieve this adaptation, the conventional axle of the rear wheel is replaced by a modified axle (4) that basically incorporates, on both sides, an extension (14) between the axle and the thread defined by a machined diameter smaller than the original one where they will be articulated the rocker arms (8) through 25 bearings (15).

    Brief description of the figures

    To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part of said description, where it is shown as an illustrative and non-limiting nature. the next:

    Figure 1: Views of the kit assembled in a standard bicycle frame.
    Figure 2: Perspective views of the kit.
    Figure 3: Perspective view of the flange that holds the crank to the frame.
    Figure 4: Plan view of the flange for securing the tube.
    Figure 5: Detail of flange dimensions. 5
    Figure 6: Sectional view of the modified rear wheel axle.
    Figure 7: Basic dimensions of a bicycle frame.
    Figure 8: Detachable alternative pedaling kit for standard frame bicycles.
     10

    Preferred Embodiment of the Invention

    The present invention is further illustrated by the following application example, which is not intended to limit its scope. fifteen

    A bicycle frame according to figure 7 is taken as reference, with a height H of 520 mm and a dimension h of 65 mm. The rear triangle has a 450 mm AT lower side and an 72 ° aperture.
     twenty
    For this configuration and following figures 1 and 2, the cranks (5) have a length of 130 mm. The connecting rods (7) have a length of 290 mm between axles and the rocker arms (8), 420 mm between axles. The distance of the pedals to the axles that articulate the connecting rods (7) to the rocker arms (8) is 70 mm. The axis connected to the cranks (5) and the plate (6) is 235 mm from the original axis 25 of the bottom bracket.

    Following Figure 6, the modified axle of the rear wheel (4) in its central section of diameter 10 mm, has a length of 191 mm partially threaded at its ends. The lateral extensions (14) of this axis measure 30 34.5 mm on each side, have a diameter of 8 mm and the threaded end M8.

    All mechanism joints have the same arrangement consisting of two deep groove ball bearings (15) (figure 6). Both of them
    Bearings are fixed by their inner tracks while the outer race of one of them has freedom of movement in the axial direction to avoid introducing axial loads due to the tolerances of the manufacturing of the elements. All bearings used are sealed on both sides and are maintenance free. 5

    The connecting rods (7) are formed by a steel tube welded to two machined stumps that contain the bearings.

    The cranks (5) and the plate (6) are commercial cycling elements 10 modified to be able to articulate the connecting rods (7) at the established distance.

    Following figure 3, the flange is constructed in four pieces. The first (16) consists of a block containing the axis of the cranks (5). The second (17) fastens the previous one with screws and forms one of the halves 15 of both the lower and the upper flange. The two remaining pieces (10) and (11) are the ones that complete the hub and close the flanges by means of screws (12).

    So that the longitudinal projections (13) and (18) (figure 3) allow the assembly of various sections of tubes or tubes of non-circular section (figure 20 4), dimensions d, D, b and angle β have been considered, in this case, 32 mm, 50 mm, 15 mm and 25 °, respectively (figure 5).
    权利要求:
    Claims (9)
    [1]

    1. Removable kit prepared to be assembled on conventional bicycles that allows the oscillating pedaling mode and which comprises: a flange (2) of height-adjustable split hub along the central tube of the bicycle frame (3); two 180º offset cranks (5) jointly joined to the same axis and this in turn attached to a plate (6); two connecting rods (7) and their joints; two rockers (8) and their joints, at whose ends are the actuation pedals 10 (9); and an extended rear wheel axle (4) in which the rocker arms are articulated.

    [2]
    2. Removable kit described in claim 1 characterized in that the split hub flange makes its contact with the central tube 15 of the frame (3) by means of two projections (13) on one side of the hub and two other projections (18) in the other side and that ensure the correct orientation of the assembly on the central tube of the bicycle frame.

    [3]
    3. Removable kit described in claim 1 characterized in that the split hub flange is tightened by screws.

    [4]
    4. Removable kit described in claim 1 characterized in that the split hub flange is tightened by means of cam locks.
     25
    [5]
    5. Detachable kit described in claim 2 characterized in that the projections (13) and (18) have a thickness and form an angle with the axis perpendicular to the longitudinal plane of the bicycle and which in turn passes through the center of the tube such that, together with the separation distance between the flanges, they allow their installation in tubes of different diameters and also of non-circular section.

    [6]
    6. Removable kit described in claim 1 characterized in that the axle (4) houses at its ends bearings that materialize the joints of the rocker arms (8) to the bicycle frame.

    [7]
    7. Removable kit described in claim 1, characterized in that the axle (4) houses friction bearings at its ends that materialize the rocker joints (8) to the bicycle frame.

    [8]
    8. Detachable kit described in claim 1 characterized in that the extended shaft is fixed to the side and side by nuts. 10

    [9]
    9. Detachable kit described in claim 1 characterized in that the extended shaft is fixed side and side by cam tightening.
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    同族专利:
    公开号 | 公开日
    ES2651195B2|2018-05-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4630839A|1985-07-29|1986-12-23|Alenax Corp.|Propulsion mechanism for lever propelled bicycles|
    US5785337A|1996-07-15|1998-07-28|Ming; Kuan Shang|Propulsion system for a bicycle|
    DE102008005728A1|2008-01-23|2009-07-30|Lashöfer, Jürgen|Mountable device for use as assembly for receiving secondary cranks, particularly in bicycle, has rotating force transmitting primary lever mimics, foot pedals and mounting components in outer or inner radius of tubular axle|
    WO2012131404A1|2011-03-28|2012-10-04|Dimitrios Grammatopoulos|Reciprocating motion feed bicycle with pulleys|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201631000A|ES2651195B2|2016-07-21|2016-07-21|REMOVABLE KIT FOR ALTERNATIVE PEDALEO FOR STANDARD BOX BICYCLES|ES201631000A| ES2651195B2|2016-07-21|2016-07-21|REMOVABLE KIT FOR ALTERNATIVE PEDALEO FOR STANDARD BOX BICYCLES|
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