Labor-saving foldable pedal

Abstract

The labor-saving foldable pedal includes a footboard and a labor-saving rod. The labor-saving rod has a first end configured to be transversely hingedly connected to a bicycle driving crank, and a second end longitudinally hingedly connected to the footboard, and bearing limiting structures corresponding to each other are respectively provided at the second end of the labor-saving rod and a longitudinal hinge end of the footboard.

Claims

1. A labor-saving foldable pedal, comprising a footboard and a labor-saving rod, the labor-saving rod has a first end configured to be transversely hinged to a bicycle driving crank, and a second end of the labor-saving rod is longitudinally hinged to the footboard, wherein bearing limiting structures corresponding to each other are respectively provided at the second end of the labor-saving rod and a longitudinal hinge end of the footboard, wherein the bearing limiting structures include two first bosses disposed on the second end of the labor-saving rod and separated circumferentially when viewed longitudinally, and two second bosses disposed on the longitudinal hinge end of the footboard and separated circumferentially when viewed longitudinally, when the footboard is in an unfolded state and subjected to a treading force, a circumferential end of one of the first bosses contacts a circumferential end of one of the second bosses, a circumferential end of the other one of the first bosses contacts a circumferential end of the other one of the second bosses, the treading force forms a forcing couple on the two second bosses and a bearing couple on the two first bosses corresponding to the two second bosses.

2. The labor-saving foldable pedal according to claim 1, wherein a transverse hinge shaft is a screw, a hole is formed on the first end of the labor-saving rod, bearings are disposed inside the hole, and the screw passes through inner rings of the bearings and is screwed into a screw hole of the bicycle driving crank.

3. The labor-saving foldable pedal according to claim 2, wherein a treading surface of the footboard is disposed forwards relative to the transverse hinge shaft, and a center line of the footboard is located in front of a center of the hole.

4. The labor-saving foldable pedal according to claim 1, wherein the footboard is a frame-shaped footboard-that is, and the labor-saving rod is placed inside the frame-shaped footboard in a folded state.

5. The labor-saving foldable pedal according to claim 1, wherein a treading surface of the footboard in the unfolded state is tilted upwards, with a lower inner side and a higher outer side.

6. The labor-saving foldable pedal according to claim 1, wherein shaft ends of longitudinal hinge shafts at the second end of the labor-saving rod are provided with an adjustment nut.

7. The labor-saving foldable pedal according to claim 1, wherein the first bosses and the second bosses are fan-shaped bosses.

8. The labor-saving foldable pedal according to claim 1, wherein when the footboard is in the unfolded state, a transverse angle of a contact surface between the two second bosses on the footboard and the two first bosses on the labor-saving rod is a certain value ranging from negative 60 to positive 60.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective schematic diagram of a right pedal in an unfolded state according to the present disclosure.

(2) FIG. 2 is a perspective schematic diagram of a right pedal in a folded state according to the present disclosure.

(3) FIG. 3 is a left perspective schematic diagram of a left pedal in a folded state according to the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

(4) In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the present disclosure will be briefly described below in combination with the accompanying drawings and embodiments or the description of the prior art. Obviously, the accompanying drawings in the following description are only some of the embodiments of the present disclosure, and those ordinarily skilled in the art would also be able to derive other drawings from these drawings without making creative efforts. It should be noted that the description of these embodiments is intended to help understand the present disclosure, but does not constitute a limitation of the present disclosure.

Embodiment 1

(5) This embodiment provides a labor-saving foldable pedal, as shown in FIG. 1, a hole is formed on one end of a labor-saving rod 1, two bearings 31 are disposed inside the hole, a screw 3 passes through inner rings of the bearings 31 and is then screwed into a screw hole of a crank 7, gaskets 32 are disposed between the two bearings 31, and between one bearing 31 and the crank 7, the other end of the labor-saving rod 1 is longitudinally hinged to a frame-shaped footboard 2 through longitudinal hinge shafts 4, two first fan-shaped bosses 5 are disposed on longitudinal hinge ends of the labor-saving rod 1, and of course, it can also be other numbers of first fan-shaped bosses 5; and two second fan-shaped bosses 6 are disposed on longitudinal hinge ends of the frame-shaped footboard 2, the number of the second fan-shaped bosses 6 on the longitudinal hinge ends of the frame-shaped footboard 2 is consistent with the number of the first fan-shaped bosses 5 on the longitudinal hinge ends of the labor-saving rod 1, and they correspond to each other, in which case, the frame-shaped footboard 2 in an unfolded state, the first fan-shaped bosses 5 contact the second fan-shaped bosses 6, and a transverse angle generated through the contact therebetween is horizontal, and a treading surface of the frame-shaped footboard 2 is tilted upwards, with an inner side lower and an outer side higher. In an embodiment, a transverse angle of a contact surface between the two bearing limiting blocks on the footboard 2 and the two bearing limiting blocks on the labor-saving rod 1 is a certain value ranging from negative 60 to positive 60.

(6) As shown in FIG. 2, the hole 8 is formed on one end of the labor-saving rod 1, the other end thereof is longitudinally hinged to the frame-shaped footboard 2 through the longitudinal hinge shafts 4, the two first fan-shaped bosses 5 are disposed on the longitudinal hinge ends of the labor-saving rod 1, and the two second fan-shaped bosses 6 are disposed on the longitudinal hinge ends of the frame-shaped footboard 2, in which case, the frame-shaped footboard 2 rotates counterclockwise from the unfolded state shown in FIG. 1 to a folded state in FIG. 2, the two second fan-shaped bosses 6 rotate counterclockwise together with the frame-shaped footboard 2 from the position shown in FIG. 1 to a position in FIG. 2, and the labor-saving rod 1 is placed inside a frame of the frame-shaped footboard 2.

(7) As shown in FIG. 3, the treading surface of the frame-shaped footboard 2 is disposed forwards relative to the hole 8 on one end of the labor-saving rod 1, that is, the hole 8 is formed on the labor-saving rod, a center line L of the frame-shaped footboard 2 is located in front of the center of the hole 8, the other end thereof is longitudinally hinged to the frame-shaped footboard 2 through the longitudinal hinge shafts 4, the two first fan-shaped bosses 5 are respectively disposed on outer sides of the two longitudinal hinge ends of the labor-saving rod 1, the two second fan-shaped bosses 6 are respectively disposed on inner sides of the two longitudinal hinge ends of the frame-shaped footboard 2, shaft ends of the longitudinal hinge shafts 4 are each provided with an adjustment nut 41, the two longitudinal hinge ends of the frame-shaped footboard 2 can be subjected to moderate clamping force by properly turning the adjustment nuts 41, the clamping force can cause a slight change in a distance between two ends of the frame-shaped footboard 2, and the slight change can exert proper clamping force on a contact surface between the labor-saving rod 1 and the frame-shaped footboard 2, the clamping force then forms hinged damping force, and the damping force can make the unfolded and folded states of the frame-shaped footboard 2 relatively stable, in which case, the frame-shaped footboard 2 is in the folded state, and the labor-saving rod 1 is placed inside the frame of the frame-shaped footboard 2.

(8) In the above embodiment, the labor-saving rod 1 and the frame-shaped footboard 2 are die-casted with ADC 12 aluminum alloy, and can withstand 145 kg of treading force at 70 mm from the longitudinal hinge shafts after testing, and a size thereof after being folded is 23.5 mm.

(9) Finally, it should be noted that the above is only a preferred embodiment of the present disclosure, and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, and the like, within the spirit and principles of the present disclosure are intended to be included within the scope of protection of the present disclosure.