• 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 invention relates to a bicycle pedal (10) comprising a tube (12), mounted free to rotate about an axis (14), and a pedal body (16) comprising at least a first face (30) on which a cyclist is likely to exercise a force, the pedal body being connected to the central tube by at least one connecting member comprising a first portion interposed between the tube and the first face and equipped with at least one strain gauge.
    公开号:FR3014407A1
    申请号:FR1362326
    申请日:2013-12-10
    公开日:2015-06-12
    发明作者:Jean-Philippe Gros；Sebastien Brulais；Ghislain Despesse
    申请人:Commissariat a lEnergie Atomique CEA；Decathlon SA；Commissariat a lEnergie Atomique et aux Energies Alternatives CEA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a dynamometer cycle pedal used to measure the forces applied by a cyclist on the pedal during pedaling.
    [0002] DISCUSSION OF THE PRIOR ART The dynamometer pedals make it possible to study the various variables of the pedaling such as the frequency, the useful power, the forces applied by the lower limbs of the cyclist, the efficiency or the mechanical efficiency.
    [0003] Useful power means the amount of energy supplied by the cyclist per unit of time actually contributing to the movement of the bicycle. In particular, the knowledge at all times of the useful power is likely to help cyclists to optimize their practice. It allows them to better manage their effort and pedaling, training or during a race. The publication FR 2 878 328 describes a dynamometric pedal in which the pedal comprises a pedal body composed of an upper part provided with means for fixing a cyclist's shoe and a lower part comprising a housing receiving a pedal axle. connected to a pedal crank. The upper and lower parts of the B12638 - DD14525SP 2 pedal body are separated from one another by a gap and connected to each other by vertical connecting members equipped with strain gauges adapted to measure the forces transverse applied to the pedal.
    [0004] A disadvantage of such a dynamometer is that it does not allow the use of conventional stress sensors, including stress sensors present in the scales, which have many advantages. Indeed, their operating characteristics are well mastered and have benefited from a long development. In addition, these sensors are manufactured on a very large scale and at a reduced cost. However, these conventional force sensors are too bulky to be used without modification to form the vertical connecting members of the dynamometer described in the publication FR 2 878 328. It is therefore necessary to design a force sensor specific to small size, each sensor being composed of one of the vertical connecting members on which is fixed the strain gauge. The cost of developing and manufacturing a specific force sensor limits the use of such a dynamometer to the field of professional cycling high level. In addition, the use of a small force sensor in a cycle pedal can be difficult. Indeed, edge effects may appear, in particular an inhomogeneity of the deformation of the connecting member under the strain gauge, which can make the measurements incorrect. In addition, the forces applied by the cyclist may be important compared to the dimensions of the force sensor. The relative deformations of the connecting member can then be important so that the force sensor may not operate in its linear operating range, which complicates the processing of the measured signal.
    [0005] B12638 - DD14525SP 3 Abstract Thus, an object of an embodiment is to provide a torque cycle pedal overcoming all or part of the disadvantages of existing solutions.
    [0006] An object of an embodiment is to provide a dynamometer pedal less complex and less expensive than existing solutions. An object of one embodiment is that the dynamometer pedal allows an accurate measurement of the forces exerted by the cyclist on the pedal. Thus, an embodiment provides a bicycle pedal comprising a tube, mounted free to rotate about an axis, and a pedal body including at least a first face on which a cyclist is likely to exert a force, the pedal body being connected to the central tube by at least one connecting member comprising a first portion interposed between the tube and the first face and equipped with at least one strain gauge. According to one embodiment, the strain gauge 20 extends at rest parallel to the first face. According to one embodiment, the connecting member is in contact with the tube according to a first surface symmetrical with respect to a plane containing the axis of rotation of the tube. According to one embodiment, the connecting member is connected to the tube by at least one screw whose axis crosses the axis of rotation of the tube. According to one embodiment, the connecting member is in contact with the tube according to a second surface symmetrical with respect to a plane containing the axis of rotation of the tube, the first and second surfaces being aligned parallel to the axis of rotation. rotation. According to one embodiment, the pedal body comprises a first portion and a second portion, fixed to the first portion, the tube being disposed between the first and second portions, the first and second portions being separated from the tube by a gap. According to one embodiment, the first portion comprises a first planar region and the connecting member 5 comprises a second planar region, the first planar region being in plane contact with the second planar region. According to one embodiment, the pedal body comprises a second face parallel to the first face, the second portion comprises a third planar region and the connecting member 10 comprises a fourth planar region, the third planar region being adapted to come into plane contact against the fourth flat region. According to one embodiment, the first part comprises a central part and a frame, the frame surrounding at least partially the second part, the second part being fixed to the central part. According to one embodiment, the central piece and the frame are part of a monolithic piece. According to one embodiment, the connecting member 20 comprises a second annular portion surrounding the first portion and connected to a first end of the first portion. According to one embodiment, the pedal comprises at least two connecting members, each connecting member comprising a first portion equipped with at least one deformation gauge extending at rest parallel to the first face, the two connecting members. being aligned along an axis parallel to the axis of rotation. According to one embodiment, the connecting member 30 comprises third and fourth portions parallel to the first portion and connected to a second end (56) of the first portion opposite the first end (58), the first portion s' extending between the third and fourth portions, the third and fourth portions being attached to the tube.
    [0007] B12638 - DD14525SP According to one embodiment, the pedal comprises a data processing circuit adapted to receive signals provided by said strain gauge. According to one embodiment, the pedal comprises means for measuring at least one acceleration of the pedal. According to one embodiment, the pedal comprises means for measuring the angle of inclination of said face. BRIEF DESCRIPTION OF THE DRAWINGS These and other features and advantages will be set forth in detail in the following description of particular embodiments in a non-limiting manner with reference to the accompanying figures in which: FIG. perspective of an embodiment of a dynamometer pedal of a cycle; Figures 2 to 4 are perspective views of certain parts of the torque pedal of Figure 1; Figure 5 is a side view of some parts of the dynamometer; Figures 6 and 7 are perspective views of certain parts of the dynamometer pedal in a direction of sight substantially opposite to the aiming direction of Figure 1; Figure 8 is a top view of some parts of the dynamometer; and Figure 9 is a side view of some parts of the dynamometer. DETAILED DESCRIPTION The same elements have been designated with the same references in the various figures which have been drawn without respect of scale. For the sake of clarity, only the steps and elements useful for understanding the invention have been shown and are described. In particular, the production of the other parts of a crankset of a cycle has not been detailed, the invention being compatible with any customary embodiment of a pedal.
    [0008] B12638 - DD14525SP 6 According to one embodiment, the dynamometric pedal comprises a conventional force sensor comprising a test body on which are fixed one or more strain gauges whose dimensions are generally a few centimeters of side over a few millimeters d 'thickness. These are, for example, stress sensors of the type used in scales. FIG. 1 shows an embodiment of a dynamometer 10. The pedal 10 comprises a central tube 12 mounted free to rotate about an axis 14. The axis 14 is intended to be connected at one end to a crank, not shown, a pedal. The axis of rotation of the tube 12 is noted A. The central tube 12 is connected, via a connecting member, not visible in Figure 1, to a pedal body 16 having a first portion 18 and a second Part 20. Preferably, the connecting member is a separate part of the central tube 12 and the pedal body 16. The first part 18 of the pedal body 16 comprises a frame 22 fixed to a central part 24 by screws 26, two screws 26 being visible in Figure 1. The central tube 12 extends between the central part 24 and the second part 20 of the pedal body 16, the frame 22 being open on one side to allow the passage of the axis 14. The second part 20 of the pedal body 16 is fixed to the central piece 24 by means of screws 28, two screws 28 being visible in FIG. 1. The first and second parts 18, 20 of the pedal body 16 are, for example , made of aluminum, steel or a plastic material possibly reinforced by r charges. By way of example, the frame 22 is inscribed in a parallelepiped whose large side measures a few centimeters, for example from 5 cm to 15 cm, the small side of which measures a few centimeters, for example from 5 cm to 10 cm, and whose the thickness measures from 1 cm to 3 cm.
    [0009] The central part 24 comprises an outer face 30. The second part 20 of the pedal body 16 comprises an outer face 32, substantially parallel to the outer face 30. A coating, not shown, may be provided around the first 5 and second parts 18, 20 of the pedal body 16. By way of example, it can be provided, on one of the outer faces 30, 32, a device for automatically attaching the shoe of a cyclist against the pedal to using a shim fixed permanently under the shoe and cooperating with a fixed front claw and a preassembled rear claw mounted tilting. Figure 2 is a view similar to Figure 1, the first portion 18 of the pedal body 16 not being shown. The force sensor 40 comprises a test body 42 which corresponds to the connecting member connecting the bottom bracket body 16 to the central tube 10. According to one embodiment, the connecting member 42 is fixed to the central tube 12, for example by two screws 44. At least one strain gauge, not visible in Figure 2, is fixed to the connecting member 42. The connecting member 42 may be made of steel or other metal or metal alloy. In the present embodiment, the connecting member 42 has a symmetrical structure with respect to a plane perpendicular to the axis of rotation A. The connecting member 42 comprises two parallel lateral lugs 46, 48 each connected to the tube central at one end 50, 52 by one of the screws 44. Preferably, the axis of each screw 44 intersects the axis D. The distance between the axes of the screws 44 is between 10 mm and 20 mm. The connecting member 42 comprises a central tab 54, connected at one end 56 to the lateral tabs 46, 48, and extending between the lateral tabs 46, 48 parallel thereto. The tabs 46, 48, 54 extend substantially perpendicular to the axis of rotation A. In the absence of efforts exerted by the cyclist on the pedal, the tab 54 extends substantially in a plane parallel to the axis of rotation A and B12638 - DD14525SP 8 parallel to the faces 30, 32. The central lug 54 is connected, at the opposite end 58, to a peripheral annular portion 60 surrounding the lateral lugs 46, 48. The annular portion 60 comprises a flat face 61 oriented on the side of the central tube 12 and a flat face 63 oriented on the side of the central part 24. The thickness of the connecting member 42 is between 1 mm and 4 mm. The annular portion 60 is inscribed in a square whose side is between 2.5 cm and 5 cm. The width of the central lug 54, measured parallel to the axis of rotation A, is between 0.5 cm and 1.5 cm. The central piece 24 comprises two openings 65 allowing access to the screws 44. Figure 3 is a view similar to Figure 2, the force sensor 40 not being shown. The central tube 12 comprises two studs 62, 64. Each stud 62, 64 comprises a flat bearing zone 66, 68, substantially parallel to the axis of rotation A. The ends 50, 52 of the lateral tabs 46, 48 rest on the bearing areas 66, 68. Preferably, each bearing zone 66, 68 is symmetrical with respect to a plane containing the axis of rotation A. The connecting member 42 is in contact with the central tube 12 only at the bearing areas 66, 68. Each bearing zone 66, 68 is delimited by flanges 70 along the sides perpendicular to the axis of rotation A. The spacing between the flanges 70 of the zone support 66 and between the flanges 70 of the bearing zone 68 is strictly greater than the width of the tabs 46, 48 of the connecting member 42. These flanges 70 form stops which prevent the displacement of the sensor 40 in a parallel direction to the axis of rotation A. The connecting member 42 may have a shape different from that described above However, it is advantageous that each contact region between the connecting member and the central tube 12 is symmetrical with respect to a plane containing the axis of rotation A. In addition, it is advantageous to that the contact regions between the link member and the central tube 12 are aligned parallel to the axis of rotation A. FIG. 4 is a view similar to FIG. 3, only the lower part 20 of the body 10 is shown, and FIG. 5 is a side view of the lower part 20 of the pedal body 10, the central tube 12 and the force sensor 40. The lower part 20 of the pedal body 16 comprises a base 80 and two flanges 82, 84 projecting from the base 80. The two flanges 82, 84 and the base 80 delimit a housing 86 in which is disposed the central tube 12. The outer planar face 32 is formed on the base 80 on the side opposite to the central tube 12. Each flange 82, 84 comprises a bearing region 88, 90 plane substantially parallel to the axis of rotation A. The bearing regions 88, 90 are coplanar and are capable of bearing against two portions of the annular portion 60 of the link 42 located on either side of the pads 62, 64 according to the forces exerted by the cyclist on the pedal body 16.
    [0010] A fixing stud 92, 94 is provided at the top of each flange 82, 84. Each fixing stud 92, 94 is traversed by openings 96 for the passage of the screws 26, visible in Figure 1. The spacing between the pads 92 , 94 is strictly greater than the dimensions of the annular portion 60 of the connecting member 42. The fixing studs 92, 94 form stops preventing the relative displacement between the force sensor 40 and the pedal body 16 in one direction parallel to the bearing regions 88, 90 and perpendicular to the axis of rotation A. However, under normal operating conditions, the pads 92, 94 may not be in contact with the connecting member 42. FIGS. and 7 are perspective views respectively of the central piece 24 and the force sensor 40 and the central piece 24 alone. The central part 24 comprises a portion 100 forming a protective cover of the force sensor 40 and which delimits the face 30. The lid portion 100 is extended by four feet 102 intended to be fixed to the frame 22. The feet 102 comprise openings 103 for the passage of the screws 26. The lid portion 100 delimits a housing 104 receiving the force sensor 40. The lid portion 100 comprises a plane bearing region 106 substantially parallel to the axis rotation A. The bearing region 106 is substantially parallel to the bearing regions 88, 90. The bearing region 106 is able to bear against the annular portion 60 of the connecting member 42 according to the forces exerted by the cyclist on the pedal body 16. The housing 104 is defined in particular by a side wall 108 which forms a stop preventing the relative displacement between the force sensor 40 and the central piece 24 parallel to the r 106. However, under normal operating conditions, the side wall 108 may not be in contact with the connecting member 42. The cover portion 100 comprises two openings 110, 112 receiving the pads 92, 94 for fixing the central piece 24 to the lower part 20 of the pedal body 16. The receiving holes 113 of the screws 28 are provided at the openings 110, 112. When the central piece 24 is fixed to the lower part 20 of the pedal body 16, the distance, measured in a direction perpendicular to the bearing regions 88, 90 and the bearing region 106, is strictly greater than the thickness of the connecting member 42. The connecting member 42 of the force sensor 40 is equipped with at least one strain gauge. FIGS. 5 and 6 show an adhesive zone 114, in particular a cyanoacrylate adhesive, covering the central lug 54 of the connecting member 42 on the side of the central tube 12 and allowing the fixing of at least one deformation, not visible, to the central lug 54. According to one embodiment, the strain gauge 35 is adapted to reflect the deformation of the central leg 54 of the B12638 - DD14525SP 11 connecting member 42 in electrical resistance variation. Preferably, the strain gauge is arranged so as to detect a deformation of the central lug 54 in a longitudinal direction, that is to say substantially from the end 56 to the end 58. As a variant, several Deformation gauges are arranged on the central leg 54 in different orientations. The relative variation of the resistance of the strain gauge is proportional, to the gauge factor, to the variation in relative length of the gauge, and therefore also to the variation in relative length of the part of the connecting member 42 which supports the strain gauge. Advantageously, a gauge is selected which has a high gage factor, to obtain a signal of greater amplitude and thus improve the sensitivity of the sensor 40. FIG. 8 represents a view from above of the central tube 12, of the axis 14 and the force sensor 40. As shown in this figure, the bearing regions 66, 68 are substantially aligned parallel to the axis of rotation A.
    [0011] Figure 9 shows a side view of the dynamometer 10, the frame 22 of the upper part 18 of the pedal body not being shown. A gap 117 is provided between the central tube 12 and the upper and lower parts 18, 20 of the pedal body. Under normal operating conditions, the upper and lower parts 18, 20 are therefore not in direct contact with the central tube 12 and the transmission to the central tube 12 of all the forces applied by the cyclist on the upper part 18 or on the lower part 20 is made via the force sensor 40. The dimensions of the gap 117 are determined so as to maintain the operation of the force sensor 40 in a linear operating range. When the forces applied to the pedal body 16 are too high, the upper part 18 or the lower part 20 comes into direct contact with the central tube 12, which makes it possible to protect the force sensor 40. cyclist presses on the face 30 of the upper part 18 of the pedal body, the central part 24 bears against the connecting member 42 of the force sensor 40. More specifically, the bearing region 106 abuts against the face 63 of the annular portion 60 of the connecting member 42. The forces exerted by the cyclist are transmitted by the connecting member 42 to the central tube 12. The central leg 54 of the connecting member 42 is deformed by bending, this deformation being measured by the strain gauge. When the cyclist presses on the face 32 of the lower part 20 of the pedal body, it bears against the connecting member 42 of the force sensor 40. More specifically, the bearing regions 88, 90 against the face 61 of the annular portion 60. The forces exerted by the cyclist are transmitted by the connecting member 42 to the central tube 12. The central leg 54 of the connecting member 42 is deformed by bending, this deformation being measured by the strain gauge.
    [0012] Advantageously, since the bearing zones 66, 68 are substantially parallel to the axis of rotation A and substantially aligned along the axis of rotation A, the majority of the forces, preferably at least 90% of the forces, transmitted by the connecting member 42 to the central tube 12 are perpendicular to the axis of rotation A and intersect the axis of rotation A. According to one embodiment, the force sensor 40 comprises a single strain gauge. According to another embodiment, the force sensor 40 comprises a plurality of strain gauges. These strain gauges may be arranged on the connecting member to measure deformations of opposite signs, for example by placing a strain gauge on the face of the central leg 54 facing the side of the central tube 12 and arranging the other strain gauge on the face of the central leg 54 oriented towards the central part 24.
    [0013] B12638 - DD14525SP 13 This makes it possible to perform a differential measurement and to eliminate errors due, for example, to temperature. The signals provided by the strain gauge or the strain gauges are transmitted to a processing circuit 118, which is schematically represented by a housing in the various figures. The processing circuit 118 is disposed in a housing 120 provided between the flange 84 of the lower part 20, the two feet 102 of the upper part 18 and the frame 22. For example, a slot 122 is provided in the stud fastener 94 to allow the passage of son, not shown, between the strain gauges of the sensor 40 and the processing circuit 118. In addition, an opening 124 is provided between the central part 24 and the frame 22 to allow access to the processing circuit 118. The supply of the processing circuit 118 may be performed by a battery or by an electrical generator adapted to recover the rotational energy of the pedal about the axis of rotation A, for example via an electromagnetic conversion , piezoelectric or electrostatic.
    [0014] According to one embodiment, the processing circuit 118 may include an open-out housing for receiving a removable memory medium in the form of a memory card that can be inserted through the opening. The processing circuit 118 is adapted to digitize the signals supplied by the strain gauge or the strain gauges and to store the digitized data. The removable memory card may, after use of the cycle, be removed for connection to a data processing and viewing unit (not shown) adapted to show the test results. According to another embodiment, the processing circuit 118 may comprise means for transmitting signals remotely. The measured data may be transmitted to a display system, for example a mobile phone, to inform the cyclist of his cadence, the useful power developed, the energy supplied for a determined period of time, etc. The data can be transmitted to an electric assist system to adjust in real time the accompanying power provided by the electric assist system. According to one embodiment, the pedal further comprises a sensor for the angle of inclination of the pedal body 16 with respect to the axis 14. It may be an angular encoder integrated in the body pedal. According to another embodiment, the dynamometer 10 may further comprise at least one accelerometer. The forces determined from the signals supplied by the force sensor 40 correspond to the forces perpendicular to the faces 30, 32 of the pedal body 16. In order to determine the driving torque of rotation of the crank of the bicycle, the forces tangential to the circle 15 centered on the axis of the crank and passing through the axis of rotation of the pedal must be determined. This can be done from the determination of the angle of inclination of the pedal. This angle can be determined from the variation of pedal acceleration measured by the accelerometer. The average tangential component of the force exerted by the cyclist and thus the average torque during a revolution of the pedal crank can thus be determined. The measurement of the acceleration also makes it possible to determine the speed of rotation of the crank. The average power supplied by the cyclist on a crank turn can thus be determined. The determination of the motor torque for rotating the crank of the bicycle and the useful power supplied by the cyclist can be obtained as described in the patent application WO2012 / 038677. The connecting member 42 may be inscribed in a parallelepiped whose base corresponds to a square whose side is greater than a few centimeters. This advantageously makes it possible to use commercially available stress sensors used for example in scales. These are force sensors produced in very large series and which are very robust by experience feedback, in particular by an optimization of the shape of the sensor and an optimization of the gluing means of the gage gauge. deformation at the connecting member.
    [0015] A measurement of the forces applied by the cyclist is, advantageously, carried out independently of the face of the pedal body 16 on which the cyclist presses. The mechanical connection between the upper part 18 of the pedal body and the connecting member 42 and between the lower part 20 of the pedal body and the connecting member 42 is a plane support connection and not a rigid mechanical connection. This advantageously makes it possible to ensure that only bearing forces are transmitted by the pedal body 16 to the force sensor 40 and that the bending forces are not transmitted by the pedal body 16 to the sensor. 40. As a result, the force sensor 40 measures only the force applied by the cyclist which is perpendicular to the axis of rotation A. The fact that each bearing region 66, 68 is symmetrical with respect to a plane containing the axis of rotation A makes the forces transmitted by the connecting member 42 to the central tube 12 are advantageously substantially perpendicular to the axis of rotation A. The inventors have shown that more than 90% of the forces transmitted by the connecting member 42 to the central tube 12 are perpendicular to the axis of rotation A. The annular portion 60 of the connecting member 42 is inscribed in a square of several centimeters from the side. This distance of the support zones between the pedal body 16 and the connecting member 42 advantageously allows a suitable transmission of the forces of the pedal body 16 to the connecting member 42 even when the cyclist pressing on the pedal body 16 on the outer side furthest from the crank or on the inner side closest to the crank. Advantageously, each pedal of the cycle may be equipped with a force sensor as described previously. This makes it possible to determine the efforts provided separately by each leg of the cyclist. The set of means for measuring the stresses are, advantageously, embedded in the pedal so as to enable the acquisition of data, without any wired connection to the outside of the pedal, which allows the complete measurement of the applied force. against the pedal in normal use condition and wireless disruptive movement. Particular embodiments have been described.
    [0016] Various variations and modifications will be apparent to those skilled in the art. Although an embodiment has been described in which the frame 22 is fixed to the central piece 24 by screws 26, the frame 22 can be fixed to the central piece 24 by any fixing means, for example by welding or by bonding. In addition, the frame 22 and the central piece 24 can form a monolithic piece. Furthermore, although an embodiment has been described in which the bottom portion 20 of the pedal body is attached to the upper portion 18 of the pedal body by screws 28, the lower portion 20 may be attached to the upper portion. 18 by any means of attachment, for example by welding or gluing. In addition, although an embodiment has been described in which the connecting member 42 is fixed to the central tube 12 by screws 44, the connecting member 42 can be fixed to the central tube 12 by any fastening means for example by welding or gluing. In addition, although an embodiment has been described in which a single connecting member 42 is used, several connecting members 42 can be placed between the central tube 12 and the pedal body 16.
    权利要求:
    Claims (16)
    [0001]
    REVENDICATIONS1. Bicycle pedal (10) comprising a tube (12), mounted free to rotate about an axis (14), and a pedal body (16) comprising at least a first face (30) on which a cyclist is capable of exerting a force, the pedal body being connected to the central tube by at least one connecting member (42) comprising a first portion (54) interposed between the tube and the first face and equipped with at least one strain gauge.
    [0002]
    Pedal according to claim 1, wherein the first portion (54) extends at rest parallel to the first face.
    [0003]
    3. Pedal according to claim 1 or 2, wherein the connecting member (42) is in contact with the tube (12) in a first surface (66) symmetrical with respect to a plane containing the axis of rotation ( A) of the tube.
    [0004]
    4. Pedal according to any one of claims 1 to 3, wherein the connecting member (42) is connected to the tube (12) by at least one screw (44) whose axis crosses the axis of rotation ( A) of the tube. 20
    [0005]
    5. Pedal according to claim 3, wherein the connecting member (42) is in contact with the tube (12) according to a second surface (68) symmetrical with respect to a plane containing the axis of rotation (A) of the tube, the first and second surfaces being aligned parallel to the axis of rotation.
    [0006]
    The pedal according to any one of claims 1 to 5, wherein the pedal body (16) comprises a first portion (18) and a second portion (20) attached to the first portion, the tube (12) being disposed between the first and second portions, the first and second portions being separated from the tube (12) by a gap (117).
    [0007]
    The pedal of claim 6, wherein the first portion (18) comprises a first planar region (106) and wherein the link member (42) comprises a second planar region (63), the first region plane being in plane contact with the second planar region.
    [0008]
    8. Pedal according to claim 7, wherein the pedal body (16) comprises a second face (32) parallel to the first face (30), wherein the second portion (20) comprises a third plane region (88, 90 ) and wherein the connecting member (42) comprises a fourth planar region (61), the third planar region being adapted to come into plane contact with the fourth planar region.
    [0009]
    9. Pedal according to any one of claims 6 to 8, wherein the first portion (18) comprises a central piece (24) and a frame (22), the frame surrounding at least partially the second portion (20), the second part being fixed to the central part.
    [0010]
    10. Pedal according to claim 9, wherein the part of a central piece part (24) and the frame (22) monolithic.
    [0011]
    11. Pedal according to one to 10, wherein the second annular portion member (60) (54) and connected to a first portion. any one of claim 1 (42) includes a surrounding the first end portion (58) of the first
    [0012]
    12. Pedal according to any one of claims 1 to 11, comprising at least two connecting members (42), each connecting member comprising a first portion (54) equipped with at least one strain gauge extending at rest. parallel to the first face, the two connecting members being aligned along an axis parallel to the axis of rotation (A).
    [0013]
    13. Pedal according to any one of claims 1 to 12, wherein the connecting member (42) comprises third and fourth portions (46, 48) parallel to the first portion (54) and connected to a second end ( 56) of the first portion opposite the first end (58), the first portion extending between the third and fourth portions, the third and fourth portions being attached to the tube (12).
    [0014]
    14. Pedal according to any one of claims 1 to 13, comprising a data processing circuit (118) 5 adapted to receive signals provided by said strain gauge.
    [0015]
    15. Pedal according to any one of claims 1 to 14, comprising means for measuring at least one acceleration of the pedal. 10
    [0016]
    16. Pedal according to any one of claims 1 to 15, comprising means for measuring the angle of inclination of said face (30, 32).
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    同族专利:
    公开号 | 公开日
    US9481428B2|2016-11-01|
    US20150158549A1|2015-06-11|
    EP2883784A1|2015-06-17|
    FR3014407B1|2017-03-10|
    EP2883784B1|2016-11-02|
    引用文献:
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    法律状态:
    2015-12-23| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-09-28| ST| Notification of lapse|Effective date: 20180831 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1362326A|FR3014407B1|2013-12-10|2013-12-10|DYNAMOMETRIC CYCLE PEDAL|FR1362326A| FR3014407B1|2013-12-10|2013-12-10|DYNAMOMETRIC CYCLE PEDAL|
    EP14195962.7A| EP2883784B1|2013-12-10|2014-12-02|Dynamometric cycle pedal|
    US14/564,939| US9481428B2|2013-12-10|2014-12-09|Dynamometric cycle pedal|
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