JP2017001547A - Bicycle pedal structure having auxiliary power trigger function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bicycle pedal structure having an auxiliary power trigger function that has a simplified structure and thus a reduced number of components.SOLUTION: A bicycle pedal structure 1 having an auxiliary power trigger function includes: a strike plate 10; a sleeve unit 20; a crank shaft 30; two pedal cranks 40; and tread force sensor units 50. The strike plate 10 has a first aperture 11 and a second aperture 12. The sleeve unit 20 is disposed inside the strike plate 10 and comprises a first sleeve 21 and a second sleeve 22. The crank shaft 30 is fit in the first sleeve 21 and the second sleeve 22, and is disposed inside the strike plate 10 so as to be freely rotatable. The pedal cranks 40 are coupled to both ends of the crank shaft 30 respectively, extend in mutually opposite directions, are mounted almost perpendicularly relative to the crank shaft 30, and have pedals 41. When receiving pumping force of the pedals 41, the crank shaft 30 rotates.SELECTED DRAWING: Figure 2

Description

The present invention relates to a bicycle pedal structure having an auxiliary power trigger function, and more particularly to an auxiliary power device that is installed on a bicycle frame and supplies auxiliary power when a rider rides a pedal of an electric bicycle to assist the traveling of the bicycle. The present invention relates to a bicycle pedal structure having a power trigger function.

  Bicycles typically include a pedal structure, a gear group coupled to the wheel axis, and a chain connecting the pedal structure and the wheel gear group. The pedal structure includes a crankshaft, a sprocket connected to the crankshaft, and a crank connected to both ends of the crankshaft. When the rider turns the left and right pedals provided on the crank and rotates the crankshaft, The wheel is rotated by the chain.

  Bicycles have been developed that include a motor and a controller for the motor so that the rider can lift the bicycle with a small force and supply auxiliary power for rotating the crankshaft by the motor. In the conventional auxiliary power technology for a bicycle pedal structure, the rotational speed and torque of the crankshaft are detected by a sensor installed on the crankshaft of the pedal structure, and the motor is started or adjusted by a controller.

  In the prior art, a sensor is installed on the crankshaft, and the sensor rotates with the rotation of the crankshaft and is connected in a manner of contacting the slip ring to transmit an electrical signal. However, in such a system, there is a drawback that contact failure occurs between the sensor and the slip ring and the transmission of the electric signal becomes unstable, and the entire structure becomes complicated and may be easily damaged. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a bicycle pedal structure having an auxiliary power trigger function by simplifying the structure and reducing the number of parts.

In order to solve the above-described problems, according to a first aspect of the present invention, a seat, a sleeve unit, a crankshaft, two pedal cranks and a pedaling force sensor unit are provided, and the drive control is provided on a bicycle frame. A bicycle pedal structure having an auxiliary power trigger function connected to a system, wherein the seat has a first opening and a second opening, and the sleeve unit is disposed in the seat. And including a first sleeve and a second sleeve, wherein the first sleeve is mounted in the first opening, the second sleeve is mounted in the second opening, A crankshaft is fitted into the first sleeve and the second sleeve, and is rotatably disposed in the seat. The pedal crank is coupled to both ends of the crankshaft. The pedals extend in opposite directions and are mounted substantially perpendicular to the crankshaft, and have a pedal. The crankshaft rotates when receiving a pedaling force, and the pedal force sensor unit is connected to the crankshaft. A bicycle pedal structure having an auxiliary power trigger function is provided, including a plurality of piezoelectric pieces respectively disposed on the first sleeve and the second sleeve so as to be positioned above the first sleeve. .

  The pedal force sensor unit includes four piezoelectric pieces, and the piezoelectric pieces are respectively disposed on the first sleeve and the second sleeve so as to form a pair above and below the crankshaft. Is preferred.

It is preferable that a bearing is disposed in each of the first sleeve and the second sleeve, and the crankshaft is received by the bearing.

  It is preferable that the apparatus further includes a rotational speed sensor that is separated from the piezoelectric piece and disposed on the first sleeve.

It is preferable that a convex edge engaged with the seat is provided on the outside of the first sleeve and the second sleeve.

In the bicycle pedal structure having the auxiliary power trigger function of the present invention, the pedal force sensor unit is installed on the sleeve unit where the pedal force sensor unit does not rotate. Therefore, when the rider crawls and the bicycle advances, the pedal force sensor unit rotates the crankshaft. Accordingly, the circuit configuration and the component configuration are simplified, and damage can be prevented.

FIG. 1 is a perspective view showing a pedal structure of a bicycle having an auxiliary power trigger function according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a pedal structure of a bicycle having an auxiliary power trigger function according to an embodiment of the present invention. FIG. 3 is a perspective view showing a pedal structure of a bicycle having an auxiliary power trigger function according to an embodiment of the present invention. FIG. 4 is a perspective view showing a bicycle pedal structure having an auxiliary power trigger function according to an embodiment of the present invention as seen from another angle. FIG. 5 is an explanatory view showing a state in which a rider scoops a pedal of a bicycle pedal structure having an auxiliary power trigger function according to an embodiment of the present invention and a force is applied to the crankshaft.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

  A pedal structure for a bicycle having an auxiliary power trigger function according to an embodiment of the present invention is disposed on a bicycle frame (not shown) and connected to a drive control system (not shown). The drive control system includes a controller and a drive motor. The controller controls the drive motor and supplies output torque used as auxiliary power. When it is detected that the rider is stroking the pedal, the controller drives the drive motor or changes the output of the drive motor to transmit the digital modularized auxiliary power to the bicycle pedal structure, and to drive the bicycle forward. Use as part or all.

  Please refer to FIG. 1 and FIG. As shown in FIGS. 1 and 2, a bicycle pedal structure having an auxiliary power trigger function according to an embodiment of the present invention includes at least a seat 10, a sleeve unit 20, a crankshaft 30, two pedal cranks 40, and a pedaling force. The sensor unit 50 is configured. The seat 10 has a first opening 11 and a second opening 12. The sleeve unit 20 is disposed in the seat 10 and includes a first sleeve 21 and a second sleeve 22. The first sleeve 21 is mounted in the first opening 11. The second sleeve 22 is mounted in the second opening 12. The crankshaft 30 is fitted into the first sleeve 21 and the second sleeve 22 and is disposed in the seat 10 so as to be rotatable. The two pedal cranks 40 are respectively coupled to both ends of the crankshaft 30 and extend in opposite directions to be attached substantially perpendicular to the crankshaft 30. The two pedal cranks 40 have a pedal, and when the pedal receives a pedaling force, the crankshaft 30 rotates. The pedaling force sensor unit 50 includes a plurality of piezoelectric pieces 51 a respectively disposed on the first sleeve 21 and the second sleeve 22 so as to be positioned above the crankshaft 30.

  Please refer to FIG. As shown in FIG. 1, the receiving seat 10 is a housing having an accommodation space. The first opening 11 and the second opening 12 form a pair on both sides of the bicycle. The seat 10 has a third opening 13 for attaching a bicycle frame.

  Please refer to FIG. As shown in FIG. 2, the sleeve unit 20 is disposed in the seat 10. The first sleeve 21 is mounted in the first opening 11. The second sleeve 22 is mounted in the second opening 12. The first sleeve 21 and the second sleeve 22 are fitted at locations adjacent to both ends of the crankshaft 30. A bearing 23 is disposed in the first sleeve 21. A bearing 24 is disposed in the second sleeve 22. The crankshaft 30 is received by the bearings 23 and 24, and the crankshaft 30 is rotatably provided in the seat 10.

  The pedal force sensor unit 50 of the present embodiment includes at least two piezoelectric pieces 51a. The piezoelectric piece 51 a is disposed on the first sleeve 21 and the second sleeve 22 and is located above the crankshaft 30. As shown in FIGS. 3 and 4, the pedaling force sensor unit 50 may include four piezoelectric pieces 51 a and 51 b. The piezoelectric pieces 51a and 51b are disposed on the first sleeve 21 and the second sleeve 22 so as to form a pair above and below the crankshaft 30, respectively. That is, when a bicycle having the bicycle pedal structure 1 travels on the road surface, each piezoelectric piece 51a disposed on the first sleeve 21 and the second sleeve 22 is located farthest from the road surface, and The piezoelectric piece 51b disposed on the sleeve 21 and the second sleeve 22 is located closest to the road surface. As shown in FIG. 2, convex edges 25 and 26 are provided on the outer sides of the first sleeve 21 and the second sleeve 22, respectively. Each convex edge 25, 26 is engaged with the inner wall of the seat through the periphery, and the first sleeve 21 and the second sleeve 22 are engaged in the seat 10.

  The bicycle pedal structure 1 further includes a rotation speed sensor 60. The rotational speed sensor 60 is disposed on the first sleeve 21 and is disposed separately from the piezoelectric pieces 51a and 51b. For example, the angle formed by the straight line from the rotation speed sensor 60 to the center point of the crankshaft 30 and the straight line from the piezoelectric piece 51a or the piezoelectric piece 51b to the center point of the crankshaft 30 is 90 degrees. The rotational speed sensor 60 is a hall sensor that detects the rotational speed of the crankshaft 30.

  Please refer to FIG. As shown in FIG. 5, in the present embodiment, when the rider pedals each pedal 41, the crankshaft 30 is rotated by each pedal crank 40, and when each pedal 41 receives a downward pedaling force, the pedaling force causes the pedal crank 40 to rotate. Is transmitted to the crankshaft 30. When the crankshaft 30 receives a force, it bends and bends and the first sleeve 21 is deformed. When the piezoelectric pieces 51a and 51b provided in pairs above and below the crankshaft 30 on the first sleeve 21 are deformed, the voltage changes, and an electric signal is transmitted to the connected drive control system, and the drive control system To output digital modularized auxiliary power. Thus, by rotating the crankshaft 30 with auxiliary power, the pedaling force can be assisted and the burden on the rider's legs can be reduced.

  As can be seen from the above, the pedal structure 1 of the bicycle having the auxiliary power trigger function according to the present invention is installed on the sleeve unit 20 where the pedal force sensor unit 50 does not rotate. Even if the pedal is moved forward, the pedal force sensor unit 50 does not rotate with the rotation of the crankshaft 30, the circuit configuration and the component configuration can be simplified, and damage can be prevented.

While the preferred embodiments of the present invention have been disclosed above, as may be appreciated by those skilled in the art, they are not intended to limit the invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the claims of the present invention should be construed broadly including such changes and modifications.

DESCRIPTION OF SYMBOLS 1 Bicycle pedal structure 10 Seat 11 1st opening 12 2nd opening 13 3rd opening 20 Sleeve unit 21 1st sleeve 22 2nd sleeve 23 Bearing 24 Bearing 25 Convex edge 26 Convex edge 30 Crankshaft 40 Pedal crank 41 pedal 50 pedaling force sensor unit 51a piezoelectric piece 51b piezoelectric piece 60 rotational speed sensor

Claims (5)

A bicycle pedal structure having an auxiliary power trigger function provided with a seat, a sleeve unit, a crankshaft, two pedal cranks and a pedaling force sensor unit and disposed on the bicycle frame and connected to a drive control system,
The seat has a first opening and a second opening;
The sleeve unit is disposed in the seat and includes a first sleeve and a second sleeve, and the first sleeve is mounted in the first opening, and the second sleeve Is mounted in the second opening,
The crankshaft is fitted into the first sleeve and the second sleeve and is rotatably disposed in the seat.
The pedal cranks are respectively coupled to both ends of the crankshaft, extend in opposite directions to each other, are attached substantially perpendicular to the crankshaft, and have a pedal. Rotates,
The auxiliary power trigger function, wherein the pedal force sensor unit includes a plurality of piezoelectric pieces respectively disposed on the first sleeve and the second sleeve so as to be positioned above the crankshaft. Bicycle pedal structure having. The pedal force sensor unit includes four piezoelectric pieces,
2. The auxiliary power trigger according to claim 1, wherein the piezoelectric pieces are respectively disposed on the first sleeve and the second sleeve so as to form a pair above and below the crankshaft. Bicycle pedal structure with function. A bearing is disposed in each of the first sleeve and the second sleeve,
The bicycle pedal structure having an auxiliary power trigger function according to claim 1, wherein the crankshaft is received by the bearing.   The bicycle pedal structure having an auxiliary power trigger function according to claim 3, further comprising a rotation speed sensor that is separated from the piezoelectric piece and disposed on the first sleeve. 5. The bicycle having an auxiliary power trigger function according to claim 4, wherein the first sleeve and the second sleeve are provided with convex edges engaged with the seat, respectively, on the outer sides of the first sleeve and the second sleeve. Pedal structure.

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