Abstract: A pedaled vehicle includes a frame, a wheel rotatably coupled to the frame, a crank assembly operatively coupled to the wheel and having a bore, a pedal received in the bore, and a spring clip for securing the pedal to the crank assembly. The spring clip includes at least one flexible tab or leg capable of flexing between a first configuration, where the spring clip allows a shaft of the pedal to pass through the bore, and a second configuration, where the pedal shaft is prevented from being removed from the bore. A method for coupling a pedal to a vehicle in a tool-less manner is also disclosed.

Abstract: A connection system having at least one male engagement component configured to engage with a female engagement component. The male engagement component is configured to interact with the female engagement component so that when pressure is applied, the at least one male engagement component embeds into the material of the female engagement component and generates sufficient friction to lock the relative positioning of the two components in at least one direction.

Abstract: The invention relates to a power measuring system for an at least partially human powered vehicle or training device with a crank drive, in particular a bicycle, with at least one crank arm 1, 6 of the bicycle being manufactured of fiber-reinforced plastics and the crank arm 1, 6 having a sensor 9, in particular a strain gage, and with the largest part of the sensor being directly enclosed on all sides by the fiber-reinforced plastics. The force exerted on the respective pedal and from this the torque exerted on the bottom bracket shaft 8 is determined by an electronics unit 5, which is preferably arranged in a cavity 12 in the bottom bracket shaft 8, from the signal of sensor 9. From this, together with the rotational frequency of bottom bracket shaft 8, which is possibly measured by further sensors or is determined in a calculative way, the power currently generated by the user of the bicycle is determined.

Abstract: A pedal with a sensing device includes a spindle, a frame member, a receiving member and a sensing assembly, the frame member having a treading portion and a receiving channel, the receiving channel being adjacent to the treading portion and having an electricity supplier, the receiving member assembled to the frame member, the sensing assembly having a controlling unit electrically connected to the electricity supplier and a sensing unit electrically connected to the controlling unit. Under this arrangement, when the rider treads on the present invention, the pedal rotates relative to the spindle to generate a force and a rotation speed for the pedal; thereby, the force and the rotation speed of the present invention are detected by the sensing assembly.

Abstract: A bicycle pedal with automatic engagement and disengagement, including a body rotatably mounted on a pedal axle one side including a front hoop and a rear hoop, each hoop having two branches connected by a crossmember, at least one of the hoops being mounted to rotate about a geometrical axis parallel to that of the pedal and being spring-loaded toward the other hoop by spring means, the space between the hoops being adapted to receive and to clamp a cycling shoe cleat; the spring-loading means of the hoop are situated, in a direction orthogonal to the branches of the hoop, outside the space between the branches; the pedal body includes exterior arms spaced from the interior arms to form yokes having facing orifices in which two coaxial individual axles, respectively associated with each branch, are engaged and supported, and the individual axles composing the articulation axle of the rotary hoop.

Abstract: A bicycle pedal with a locking function has a base and a securing member. The base is positioned on a side of the bicycle and has a U-shaped main body and a through hole disposed on the main body. The securing member has a securing rod with an end attached to the bicycle and disposed through the through hole, and a stopping portion disposed at another end of the securing rod. wherein the main body is capable of sliding along the securing rod between a locking position and a non-locking position, and when the main body is at the locking position, the main body moves to one end of the securing rod and pushes against the stopping portion to prevent wheels from rotating, and when the main body is at the non-locking position, the main body moves to another end of the securing rod to release the wheels.

Abstract: A bicycle pedal can include a pedal body configured to rotate about a spindle. The pedal can also include one or more bearing systems to reduce friction between the pedal body and the spindle. The spindle can act as the inner bearing race for one or more of the bearing systems. A bearing body can act as the outer bearing race for one or more of the bearing systems.

Abstract: An anti-theft bicycle pedal is disclosed. The mounting end of the pedal is shaped with polygonal faces and/or splines to match an opening on the crank so that when the mounting end of the pedal axle is inserted into the matching opening and locked into place, the pedal cannot be removed without an unlocking agent. With an unlocking agent, the pedal is easily removed without tools. The pedal can be reversibly mounted on the crank so that the bicycle cannot be pedaled away, or so that the pedal can be stowed during transport or storage. The pedal cannot rotate in the crank as a result of polygonal faces and/or splines on the mounting end that resist rotation. A physical stop can be used to control the symmetry of insertion into the opening which facilitates reversible mounting.

Abstract: A pedal for a bicycle has two connecting boards and multiple fixing elements. The connecting boards are connected to each other and each connecting board has a shaft recess, a protruding segment, a recessed segment and multiple mounting recesses. The protruding segment and the recessed segment are respectively formed on an inner side of the connecting board beside the shaft recess. The protruding segment has an opening hole, an outer protruding tab, an inner protruding tab and multiple through holes. The recessed segment has an opening hole, an outer recess, an inner recess and multiple through holes. The fixing elements are connected to the connecting boards, and each fixing element has a fastener and a mounting head. The fastener is mounted in two through holes of the connecting boards and has two anti-slipping protrusions, a connecting head and an outer thread. The mounting head is screwed with the fastener.

Abstract: A quick release device for a pedal includes a spindle, a connecting unit connected to the spindle, and a quick release mechanism connected to the connecting unit. The spindle has a protrusion extending from one end thereof and an annular groove defined in an outer peripheral thereof. The connecting unit has a receiving hole defined therein, a guiding hole defined in a lateral thereof and communicated with the receiving hole, and a retaining hole defined therein and communicated with the receiving hole. The quick release mechanism includes a rod partially received in the guiding hole and a spring biased against the rod toward the receiving hole. In assembly the protrusion engages with the retaining hole and the rod engages with the annular groove.

Abstract: A bicycle pedal unit comprises a central body (2) associable with a tube of a bicycle frame; two pedal cranks (3, 4) connected to opposite ends (2a) of the central body (2); two pedals (5, 6), each connected to a respective pedal crank (3, 4); the angular position of at least a movable pedal crank (3) is adjustable relative to the other pedal crank (4), which is fixed.

Abstract: The invention is a device for adapting a clipless bicycle pedal into a standard bicycle pedal. The clipless bicycle pedal fits into a shaped recess in the body of the pedal adaptor. The shaped recess extends along the longitudinal axis of the body of the pedal adaptor and is shaped such that the clipless bicycle pedal is compressed within the shaped recess, causing a frictional force to retain the pedal adaptor on the clipless bicycle pedal during use. The body of the pedal adaptor is formed from a thermoplastic or a fiberglass reinforced thermoplastic.

Abstract: A crank arm for a pedal-driven vehicle is described herein. The crank arm includes a first member that pivots about a crank axis of the pedal-driven vehicle and a second member rotationally coupled to the first member and configured to receive a pedal. The crank arm further includes a spring assembly configured to bias the second member towards a neutral rotation configuration relative to the first member and to resist rotation of the second member away from the neutral rotation configuration, wherein a distance between the crank axis and the pedal interface is greater than a distance between the crank axis and the member pivot point when the second member is in the neutral rotation configuration.

Abstract: This automatic bicycle pedal comprises a pedal body (2) equipped at a first end (5) with first attachment means (7) and at a second end (6) with second attachment means (10), an elastically deformable lever (8) bearing the second attachment means and capable of being deformed between a first position of holding a cleat fixed to the underside of a shoe between the first and second attachment means, and a deformed second position allowing the cleat to be attached and detached in respect of attachment and detachment movements. The deformable lever comprises at least one first deformable zone (12) that can be deformed during attachment and detachment movements and at least one second deformable zone (13) that can be deformed during one of the said attachment and detachment movements, the said first and second zones having different stiffnesses.

Abstract: A quick release pedal is revealed. The quick release pedal includes a pedal shaft for being assembled with a pedal, a connection member, a positioning pin, and a moving part. The pedal shaft is disposed with a fastening part and a mounting slot. A mounting hole corresponding to the mounting slot is arranged at the connection member. The positioning pin includes a circular groove, a mounting part corresponding to the mounting hole, and a locking part. The moving part is sleeved over a wall surface of the connection member arranged with the mounting hole. At least one long slot corresponding to the locking part of the positioning pin is disposed on the moving part. At least one magnetic part is mounted between the moving part and the wall surface. Thus assembly and disassembly of the pedal is more convenient and faster by the magnetic part attached to the wall surface.

Abstract: The pedal includes a pedal body (1) rotationally mounted on a pedal shaft. The pedal body (1) includes a fixed front catch element (4) and a movable rear catch element (6) that work with a retaining plate (3) fixed underneath the footwear of the cyclist. The movable rear catch element (6) is mounted to be able to pivot between a retaining position of the plate (3) and a position of release of the plate (3) by the pivoting of the rear catch element (6) in opposition to the action of an elastic return element (10). The elastic return element (10) is composed of an elastic leaf that forms a spring located in a longitudinal housing (11) of the pedal body (10) open to the rear, the leaf (10) being able to be stressed along its longitudinal axis in buckling during pivoting of the rear catch element.

Abstract: A bicycle pedal assembly having a pedal body rotatably coupled to a pedal shaft. A bore receiving the pedal shaft passes through the pedal body. A semi-cylindrical shoulder extends outwardly from an exterior surface of the shaft. A bushing is positioned within the bore to rotatably support the pedal shaft. An inner surface of the shoulder rotatably engages the external end of the bushing, so that the second end of the shaft is movably connected to the pedal body without assistance of any fasteners.

Abstract: A pedal-crank assembly for bicycles includes a pedal configured to be used as a safety lock for the bicycle and a member for fast and easy removal of the pedal from the crank. The pedal-crank further includes a frame rotatably mounted on a pin and a shaft rotatably mounted inside the pin. The pedal has spherical bodies housed inside housing of the shaft. The pin has holes which receive the corresponding spherical bodies. A key lock is mounted to the pedal and configured to be actuated to move the shaft.

Abstract: A bicycle pedal assembly includes a spindle inserted through a thin bearing-less pedal body or an axle formed integrally with a pedal body. The interior of the cage of the pedal body may include a variety of structures or no structures, such as open space. A medial portion of the spindle is inserted substantially through a hollow bolt with an internal passageway. One or more bearings are disposed outside the pedal body and in the hollow bolt to facilitate rotation of the spindle with respect to a crank arm. The bolt is screwed into a standard sized bore of the crank arm. Accordingly, the medial portion of the spindle extends transversely through the width of the crank arm.

Abstract: A pedal includes a pedal body configured for engagement with a person and defining a first major side and a second major side of the pedal. A first plate member engages the first major side and has a first outer surface. Similarly, a second plate member engages the second major side and has a second outer surface. At least one of the first or second outer surfaces includes a graphic design feature. The first and second plate members may be coupled to each other through openings in the pedal body. The graphic design feature may be carried on a graphic design element which is coupled to the first and/or second outer surface.

Abstract: A removable pedal positioner to engage a crank arm and a pedal of a bicycle to position the pedal in a generally horizontal position. One embodiment comprises a bridge, at least one prong, and a mounting post. The mounting post engages the crank arm while the at least one prong extends past the crank arm to position the pedal in a generally horizontal position. In other embodiments, the positioner utilizes a flexible clamp to secure the positioner to the crank arm thereby positioning the pedal in a generally horizontal position.

Abstract: A pedal for use in pedal exercise equipment includes a connection shaft connected to a crank rod; a pedal body rotatively connected to the connection shaft, inclination control plates, which have hinge pin connection holes at both side end portions and are respectively inserted to the inside of an inner upper front portion, an inner upper rear portion, an inner lower front portion and an inner lower rear portion of the pedal body; hinge pins, which are provided with control bolt coupling holes in the center of outer peripheries thereof in the vertical direction, and inserted to the inside of the hinge pin connection holes of the respective inclination control plates in the to and fro direction. Control bolts are provided to control left vertical protrusion amounts and right vertical protrusion amounts of the inclination control plates.

Abstract: A bicycle pedal can include a pedal body configured to rotate about a spindle. The pedal can also include one or more bearing systems to reduce friction between the pedal body and the spindle. The spindle can act as the inner bearing race for one or more of the bearing systems. A bearing body can act as the outer bearing race for one or more of the bearing systems.

Abstract: A bicycle pedal has a pedal spindle, a pedal body and a step-in cleat engagement structure. The pedal body includes a tubular mounting portion rotatably mounted on the pedal spindle. The tubular mounting portion includes a center tube section that has a widthwise dimension and a lengthwise dimension as measured from the center spindle axis to an outside surface of the center tube section along reference planes that are substantially perpendicular to each other. The widthwise dimension is substantially perpendicular to a cleat pedaling force direction applied to the pedal spindle, as viewed along in a direction of the center spindle axis. The outside surface of the center tube section has an overall transverse cross sectional shape that includes a generally convex arc that extends a majority of the outside surface of the center tube section on a side of the reference plane that faces the cleat engagement structure.

Abstract: A bicycle pedal with automatic engagement and disengagement, including a body rotatably mounted on a pedal axle one side including a front hoop and a rear hoop, each hoop having two branches connected by a crossmember, at least one of the hoops being mounted to rotate about a geometrical axis parallel to that of the pedal and being spring-loaded toward the other hoop by spring means, the space between the hoops being adapted to receive and to clamp a cycling shoe cleat; the spring-loading means of the hoop are situated, in a direction orthogonal to the branches of the hoop, outside the space between the branches; the pedal body includes exterior arms spaced from the interior arms to form yokes having facing orifices in which two coaxial individual axles, respectively associated with each branch, are engaged and supported, and the individual axles composing the articulation axle of the rotary hoop.

Abstract: A pedal assembly for a bicycle, including a pedal, a crank arm having an axis of rotation of the crank arm, and a variable attachment device that attaches the pedal to the crank arm at an angle of inclination with respect to the axis of rotation of the crank arm, wherein the variable attachment device enables changing the angle of inclination with respect to the axis of rotation of the crank arm without disassembly of the pedal from the crank arm.

Abstract: A pedal structure of a bicycle includes a retaining assembly having an arcuate engaging tab, a limiting piece mounted, and a pushing block, the limiting piece including a groove attached thereon, the pedal including an arcuate hook disposed on a front side thereof, an aperture mounted on a middle section thereof, a chamber fixed on a rear side thereof, the chamber including two slots attached on top ends of two sides thereof respectively, a defining plane formed on an upper side thereof, and two peripheral plates arranged on the two sides thereof individually, the adjusting member including a rotating disc and a stem having a recess, and an eccentric opening communicating with the recess, the recess includes a tee locking member having a vent, two sliding projections, and a protrusion, and a shank being inserted to the eccentric opening and the vents to be retained in the recess.

Abstract: A clipless pedal device (1) for securing a first securing arrangement provided on the pedal with a second securing arrangement fixed under the sole of the cycling shoe, includes an attachment arrangement (8). The attachment arrangement (8) includes at least one moving part that is prestressed into the attachment position by an elastic element (5a, 5b). The elastic element (5a, 5b) includes a straight oblong part constituting a torsionally (T) stressed element.

Abstract: A bicycle pedal assembly includes a channel-free pedal body having cross members which define holes for receiving an axle rod. The holes are axially aligned and formed with a shape which conforms to a profile of the axle rod to rotationally fix the pedal body to the rod. A first hollow bolt includes an externally threaded portion to mate with a left crank arm. A second hollow bolt includes a reversed externally threaded portion to mate with a right crank arm. Each of a pair of identical axles may be joined to either the first or second hollow bolt. Each pedal assembly in interchangeable between the left and right crank arms.

Abstract: The present industrial invention relates to a pedal-crank assembly for bicycles, which comprises means for fast and easy removal of the pedal (P) from the crank (Z), as well as means that allow for using the pedal as safety lock for the bicycle.

Abstract: A bicycle pedal includes a lateral spindle parallel to an X-axis and perpendicular to a Y-axis the X-axis, and includes an inclined surface formed in the inner and front side portion and tilted outwardly and tilted relative to the Y-axis for a tilting angle “A” ranged from five (5) to twenty five (25) degrees, and includes another inclined surface formed in the outer and rear side portion and tilted inwardly and tilted relative to the Y-axis and parallel to the feet of the user for suitably supporting the feet of the user and for allowing the pedal members to be suitably or effectively stepped or actuated by the user, and includes one or more air passages, air pathways or openings for air circulating purposes.

Abstract: A bicycle pedal has a connecting device and two arcuate bodies. Each body has an opening, a central section, a first end section and a second end section. The central sections are securely mounted on the connecting device. Each first end section is mounted through and protrudes out from the opening of the other body. Because the bodies are arcuate, the structural strength of the bicycle pedal is excellent and the bent bodies can provide a cushion effect to distribute evenly the pedaling force.

Abstract: A bicycle pedal assembly having a pedal body rotatably coupled to a pedal shaft. A bore receiving the pedal shaft passes through the pedal body. A semi-cylindrical shoulder extends outwardly from an exterior surface of the shaft. A bushing is positioned within the bore to rotatably support the pedal shaft. An inner surface of the shoulder rotatably engages the external end of the bushing, so that the second end of the shaft is movably connected to the pedal body without assistance of any fasteners.

Abstract: A bicycle pedal comprises a pedal body having a support surface and a pedal axle rotatably supporting the pedal body. The pedal is characterized in that the support surface has a recess extending substantially across the entire width of the pedal, the deepest portion of the recess being offset from the pedal axle.

Abstract: A quick release device includes a crank having a first hole defined in one end thereof, the crank having a sixth hole opened on one lateral thereof, a fixing sleeve positioned in the first hole of the crank, a third hole opened at one end of the fixing sleeve, a fourth hole opened on the outside periphery of the fixing sleeve therethrough and corresponding to the sixth hole, the fourth hole communicating with the third hole, a quick release assembly partially received in the sixth hole, the quick release assembly having a second engaging rod, a fixing member and a rotating button, the second engaging rod received in the sixth hole, the fixing member connected to the crank and sleeved on the second engaging rod. When the user wants to release the pedal from the crank, the user just rotates the rotating button counterclockwise.

Abstract: A bicycle pedal, particularly for touring bicycles, comprises a pedal body (10) made of plastic material. In the pedal body (10), an axis opening (20) is provided for accommodating a pedal axis (24). The pedal axis (24) is surrounded by a sleeve (22). At least one bearing element (26,28), being formed as a slide bearing, is arranged between the pedal axis (24) and the sleeve (22).

Abstract: The utility model discloses a reciprocating variable speed pedal structure for a scooter. The reciprocating variable speed pedal structure comprises a power pressure bar (2) movably connected to a scooter bracket (1), and is characterized by further comprising a power pressure bar return mechanism (A) capable of flexing one end of the power pressure bar upward, an upper end of the power pressure bar (2) is movably connected with a movable pedal (5) through a shaft (4) and divides the movable pedal into a movable pedal limit end and a movable pedal labor-saving end, and a movable connecting member (8) capable of limiting the motion range of the movable pedal is arranged between the front part of the movable pedal limit end and the scooter bracket. The reciprocating variable speed pedal structure is applied to two-wheel to four-wheel scooters, the pedaling mode coincide with human standing pedaling posture and is easy for a person to smoothly exert a force.

Abstract: In accordance with one aspect of the present invention, a pedal apparatus is provided. The pedal apparatus comprises a pedal member including a seat and an axle configured to cooperate with the seat to support the pedal member. The pedal apparatus is configured such that a rotation of the pedal member with respect to the axle causes translation of the pedal member with respect to the axle.

Abstract: A locking bicycle pedal includes coiled cables on spools with locking mechanisms attached to free ends. The cables may be extended from the spools. The locking mechanism may comprise a key or combination lock. The locking mechanisms attach to the pedal when not in use for locking the bicycle. A bicycle may be equipped with one or more locking pedals. Where two locking pedals are provided, the locking mechanisms of one pedal may interlock with each other and/or the locking mechanisms of the other pedal. The coil and locking mechanisms do not interfere with normal use of the bicycle.

Abstract: A triangle pedal contains a body including a circular tube with first threads to screw with an adjustable knob, the body including a first and a second triangle plates disposed on a front and a rear ends thereof respectively, the first triangle plate including three first apertures, the second triangle plate including three second apertures connecting with an elongated member which includes an adjusting post received therein, the adjusting post including a projection with first positioning screws, and the projection including a closed orifice to receive a returning spring, the forcing bar including outer screws, a ring, and a biasing pillar, the biasing pillar including a first conical face, the adjustable knob including an opening with second screws to screw with the first threads and second positioning screws, a locking piece including a mouth to connect with a bicycle shoe and a first and a second engaging grooves.

Abstract: An ergonomic bicycle pedal with removable platform comprises a pedal axle configured to receive a pedal body A socket extends integrally from the underside of the removable platform. A front hook and a rear hook extend integrally from the underside of the platform with the front hook configured and sized to engage a front channel and a rear hook configured and sized to engage a rear channel. Both the front and the rear channels are configured to allow rotational movement along two axes by having the socket moving on top of the ball and having the front hook moving within the front channel and the rear hook moving within the rear channel.

Abstract: An anti-theft bicycle pedal is disclosed. The mounting end of the pedal is shaped with polygonal faces and/or splines to match an opening on the crank so that when the mounting end of the pedal axel is inserted into the matching opening and locked into place, the pedal cannot be removed without an unlocking agent. With an unlocking agent, the pedal is easily removed without tools. The pedal can be reversibly mounted on the crank so that the bicycle cannot be pedaled away, or so that the pedal can be stowed during transport or storage. The pedal cannot rotate in the crank as a result of polygonal faces and/or splines on the mounting end that resist rotation. A physical stop can be used control the symmetry of insertion into the opening which facilitates reversible mounting.

Abstract: A bicycle pedal apparatus is provided formed from two identical halves comprising a plurality of holes. A bolt secures the two halves through the holes and projects out beyond the surface of the pedal, thereby performing a dual role of securing the two halves together and serving as a traction mechanism. The pedal bodies rotate about a pedal axle either directly on the axle or on bearings. In embodiments utilizing bearings, two different bearings are used, roller bearings to bear the rotational load and thrust bearings to bear any axial load. The pedal axle can be tapered with a flanged head and resides in a cavity in the pedal body that substantially conforms to the shape of the pedal axle so as to minimize movement of the pedal axle within the pedal body.

Abstract: A kickdown assembly for a pedal assembly including a pedal. In one embodiment, the kickdown assembly a leaf spring kickdown element including a base, a first arm which extends from a first end of the base and defines a recess, and a second arm which extends from a second end of the base and includes a distal end seated in the recess of the first arm and adapted to transfer a resistance force to the pedal when the second arm of the kickdown element contacts the pedal. The resistance force is overcome by the application of a kickdown or step force against the pedal which is greater than the resistance force and causes the distal end of the second arm of the kickdown element to spring out of the recess defined in the first arm of the kickdown element.

Abstract: A pedal arm is provided with an arm main body that is a tubular-shaped member formed by bending a plate member having a first end portion and a second end portion, a pedal pad portion provided on the arm main body, and a shaft portion provided on the arm main body. The arm main body includes a first wall portion and a second wall portion facing each other in a first direction, and a third wall portion and a fourth wall portion facing each other in a second direction that is different from the first direction. One of the first wall portion and the second wall portion includes an abutting portion at which the first end portion and the second end portion of the plate member are brought into contact with each other, and the third wall portion and the fourth wall portion correspondingly include a first curved portion and a second curved portion, which are curved in parallel to each other with a same curvature along an extending direction of the arm main body.

Abstract: A bicycle pedal assembly includes a spindle inserted through a thin bearing-less pedal body. A medial portion of the spindle is inserted substantially through a hollow bolt with an internal passageway. One or more bearings are disposed outside the pedal body and in the hollow bolt to facilitate rotation of the spindle with respect to a crank arm. The bolt is screwed into a bore of the crank arm. Accordingly, the medial portion of the spindle extends transversely through the width of the crank arm.

Abstract: A bicycle pedal assembly includes an axle formed integrally with a pedal body. The integral axle extends from a medial side of a pedal body through an axle connector coupled to a crank arm. The axle connector may be a separate hollow bolt screwed into a bore of the crank arm. The axle connector may house one or more bearings to facilitate rotation of the axle. The interior of the cage of the pedal body may include a variety of structures, such as bridges, or no structures, e.g., an open space, since the proximally extending integral axle need not extend across the width of the pedal body.

Abstract: A bicycle pedal assembly includes a channel-free pedal body having cross members which define holes for receiving an axle rod. The holes are axially aligned and formed with a shape which conforms to a profile of the axle rod to rotationally fix the pedal body to the rod. A first hollow bolt includes an externally threaded portion to mate with a left crank arm. A second hollow bolt includes a reversed externally threaded portion to mate with a right crank arm. Each of a pair of identical axles may be joined to either the first or second hollow bolt. Each pedal assembly in interchangeable between the left and right crank arms.

Abstract: A bicycle pedal contains a central shaft and a body; between a first inner side end of the central shaft and an axial hole of the body being defined a first rotating element; between a first outer side end of the central shaft and the axial hole of the body being defined a second and a third rotating elements, wherein the second and the third rotating elements are a bearing, an inner surface of a first inner loop of and an outer surface of a first outer loop of the second rotating element are limited by a limiting wall of the central shaft and a defining fence of the body respectively; an inner surface of a second outer loop of the third rotating element is limited by the defining fence, a locking nut screwed with the central shaft abuts against a second inner loop of the third rotating element.

Abstract: A pedal retaining apparatus includes a driving unit adapted to engage with a pedal. The driving unit has a first magnetic unit disposed thereon and a positioning unit corresponding to the driving unit, the positioning unit has a second magnetic unit disposed thereon. The second magnetic unit corresponded to the first magnetic unit. The pedal is magnetically retained in a predetermined position due to a magnetic force between the first magnetic unit and the second magnetic unit; when the pedal rotates relative to the spindle, the magnetic force between the first magnetic unit and the second magnetic unit drives the driving unit to rotatably regain the predetermined position for the pedal to synchronously rotate with the driving unit to regain the predetermined position.