TWI582010B - Bicycle pedal with auxiliary power trigger function - Google Patents

Description

Bicycle pedal structure with auxiliary power trigger function

The bicycle pedal structure with the auxiliary power triggering function of the invention is used for setting on the bicycle tripod, especially the electric bicycle capable of providing auxiliary power, so that the user can provide auxiliary power to advance the bicycle when stepping on.

The bicycle generally includes a pedal structure, a gear set coupled to the wheel axle, and a chain connecting the pedal structure and the gear set of the wheel. The pedal structure generally has a crankshaft, a gear coupled with the crankshaft, and the crankshaft. The two-end foot pedal is used for the user to step on the pedal of the pedal to rotate the crank shaft, thereby driving the wheel to rotate by the chain.

In order to alleviate the foot force that the user steps on when riding a bicycle, there has been a bicycle having a drive motor and its controller that provides an auxiliary power for crankshaft rotation by a drive motor. Conventionally, in the technique for providing the auxiliary power of the bicycle pedal structure, most of the sensors are disposed on the crankshaft of the pedal structure, and the controller is used to detect the rotational speed or torque of the crankshaft. Whether to start or adjust the basis of the drive motor.

However, in the prior art, the sensor is disposed on the crankshaft, and the sensor rotates as the crankshaft rotates, and is connected by the contact of the slip ring to transmit the electrical signal. This method has the disadvantages of poor contact between the sensor and the collector ring and unstable transmission of the electrical signal, and the overall structure is complicated and vulnerable.

It is an object of the present invention to provide a bicycle pedal structure that is simplified in structure and that can reduce the number of components and has an auxiliary power triggering function.

To achieve the above and other objects, the present invention provides a bicycle pedal structure having an auxiliary power triggering function for being disposed on a bicycle frame and coupled to a drive control system, the bicycle pedal structure including a bearing a socket, a sleeve unit, a crankshaft, a two-foot crank and a pedaling sensing unit, the socket has a first opening and a second opening; the sleeve unit is disposed in the socket and has a first sleeve and a second sleeve, the first sleeve is assembled in the first opening, the second sleeve is assembled in the second opening; the crank shaft is configured by the first The sleeve and the second sleeve are sleeved and rotatably disposed in the socket; the two pedal cranks are respectively coupled to the two ends of the crank shaft, and the extension directions of the two pedal cranks are opposite and substantially Vertically the crankshaft, each of the pedal cranks has a pedal for receiving the pedaling force to rotate the crankshaft; the pedaling force sensing unit has a plurality of piezoelectric sheets, and the piezoelectric sheets are disposed at least in the first a sleeve and the second sleeve opposite to the crankshaft Position side.

In the above bicycle pedal structure, the pedal force sensing unit has four piezoelectric sheets, and the piezoelectric sheets are respectively disposed on the first sleeve and the second sleeve and above and below the crank shaft. s position.

In the bicycle pedal structure described above, each of the first sleeve and the second sleeve has a bearing, and each of the bearings is for supporting the crankshaft.

In the above bicycle pedal structure, a speed sensor is further included, and the speed sensor is disposed on the first sleeve and disposed apart from each of the piezoelectric sheets.

In the bicycle pedal structure described above, the first sleeve and the outer side of the second sleeve each have a flange for engaging and fixing in the socket.

Therefore, the above bicycle pedal structure is configured to dispose the pedaling force sensing unit on the non-rotating sleeve unit, that is, when the bicycle advances due to the user stepping on, the pedaling force sensing unit does not rotate with the crankshaft. The circuit configuration and component structure are simplified and are not easily damaged.

1‧‧‧Bicycle pedal structure

10‧‧‧ 承座

11‧‧‧ first opening

12‧‧‧ second opening

13‧‧‧ third opening

20‧‧‧Sleeve unit

21‧‧‧First sleeve

22‧‧‧Second sleeve

23,24‧‧‧ Bearings

25,26‧‧‧Flange

30‧‧‧ crankshaft

40‧‧‧ pedal crank

41‧‧‧ pedal

50‧‧‧ pedal force sensing unit

51a, 51b‧‧‧ Piezo Pieces

60‧‧‧Speed sensor

1 is a schematic structural view of a bicycle pedal structure according to an embodiment of the present invention.

2 is a schematic cross-sectional view showing a bicycle pedal structure according to an embodiment of the present invention.

3 is a perspective view showing a bicycle pedal structure according to an embodiment of the present invention.

Fig. 4 is another perspective view showing a bicycle pedal structure according to an embodiment of the present invention.

Fig. 5 is a schematic view showing the force applied to the crankshaft when the user steps on in the embodiment of the present invention.

In order to fully understand the objects, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings.

The bicycle pedal structure of the embodiment of the present invention has an auxiliary power triggering function for being disposed on a bicycle frame (not shown) and coupled to a drive control system (not shown). The drive control system includes a controller. And a drive motor that controls the output torque provided by the drive motor as an auxiliary power. When it is detected that the user steps on, the controller is triggered and starts the drive motor Or changing the output torque of the driving motor to provide digital modular auxiliary power transmission to the bicycle pedal structure as part or all of the bicycle forward power.

1 to 2, the bicycle pedal structure of the embodiment of the present invention includes a socket 10, a sleeve single edge 20, a crank shaft 30, a two-foot crank 40, and a pedaling force sensing unit 50. The socket 10 has a first opening 11 and a second opening 12; the sleeve unit 20 is disposed in the socket 10 and has a first sleeve 21 and a second sleeve 22, the first The sleeve 21 is assembled in the first opening 11 , and the second sleeve 22 is assembled in the second opening 12 . The crank shaft 30 is composed of the first sleeve 21 and the second sleeve 22 . The two pedals 40 are respectively rotatably disposed in the socket 10; the two pedals 40 are respectively coupled to the two ends of the crankshaft 30, and the two pedals 40 extend in opposite directions and are substantially perpendicular to the crankshaft 30. Each of the pedal cranks 40 has a pedal 41 for receiving the pedaling force of the left and right feet of the user to rotate the crankshaft 30. The pedaling force sensing unit 50 has a plurality of piezoelectric sheets 51a, and the piezoelectrics The sheet 51a is disposed at least on the first sleeve 21 and the second sleeve 22 at a position above the crankshaft 30.

As shown in FIG. 1 , the socket 10 is a housing having an accommodating space. The first opening 11 and the second opening 12 are opposite to each other and correspond to the left and right sides of the bicycle, and the socket 10 further has a housing 10 . A third opening 13 for assembly onto a bicycle frame.

As shown in FIG. 2, the sleeve unit 20 is disposed in the socket 10, and the first sleeve 21 is assembled in the first opening 11, and the second sleeve 22 is assembled in the second In the opening 12, the first sleeve 21 and the second sleeve 22 are sleeved on the crank shaft 30 at a position adjacent to the two ends. The first sleeve 21 has a bearing 23 therein and the second bearing 22 has A bearing 24, each of the bearings 23, 24 is used to support the crankshaft 30, and the crankshaft 30 is rotatably disposed in the socket 10.

In this embodiment, the pedaling force sensing unit 50 has at least two piezoelectric sheets 51a, and the piezoelectric sheets 51a are disposed on the first sleeve 21 and the second sleeve 22 and opposite to the crank shaft. 30 on The location of the party. In addition, as shown in FIG. 3 and FIG. 4, the pedaling force sensing unit 50 can have four piezoelectric sheets 51a and 51b, and the piezoelectric sheets 51a and 51b are respectively disposed on the first sleeve 21 and the first The second sleeve 22 is located above and below the crankshaft 30, that is, when the bicycle having the bicycle pedal structure 1 travels on the ground, each of the piezoelectric sheets 51a is attached to the first sleeve 21 and the The second sleeve 22 is located farthest from the ground, and each of the piezoelectric sheets 51b is located closest to the ground on the first sleeve 21 and the second sleeve 22. As shown, the first sleeve 21 and the outer side of the second sleeve 22 each have a flange 25, 26, and each of the flanges 25, 26 is circumferentially engaged with the inner wall of the socket. The first sleeve 21 and the second sleeve 22 are engaged and fixed in the socket 10 .

In addition, the bicycle pedal structure 1 can have a rotational speed sensor 60 disposed on the first sleeve 21 and spaced apart from each of the piezoelectric sheets 51a, 51b, for example, The rotation speed sensor 60 is located at a position 90 degrees from the center point of the piezoelectric piece 51a or the piezoelectric piece 51b with respect to the crank shaft 30, and the rotation speed sensor 60 is used for measuring the rotation speed of the crank shaft 30. The speed sensor 60 can be, for example, a Hall sensing element.

Referring to FIG. 5, in the embodiment, when the user steps on each of the pedals 41 and rotates the crankshaft 30 by each of the pedal cranks 40, each of the pedals 41 receives a downward pedaling force and transmits the pedals. The pedal 40 is transmitted to the crankshaft 30, and the crankshaft 30 is bent and deformed by the force, and at the same time, the first sleeve 21 is deformed. The first sleeve 21 is above and below the crankshaft 30. The piezoelectric sheets 51a, 51b at the position are subjected to voltage changes due to deformation, thereby sending an electrical signal to the connected drive control system to trigger the drive control system to output digital modular auxiliary power, and the auxiliary power system is used for driving. The crankshaft 30 is rotated to relieve the pedaling force that the user desires to apply.

Accordingly, the bicycle pedal structure 1 of the embodiment of the present invention provides the pedaling force sensing unit 50 on the non-rotating sleeve unit 20, that is, when the bicycle advances due to the user stepping on the pedaling force. The measuring unit 50 does not rotate with the crankshaft 30, but the circuit configuration and the component structure are simplified, and it is not easily damaged.

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

1‧‧‧Bicycle pedal structure

10‧‧‧ 承座

11‧‧‧ first opening

12‧‧‧ second opening

13‧‧‧ third opening

20‧‧‧Sleeve unit

21‧‧‧First sleeve

22‧‧‧Second sleeve

23,24‧‧‧ Bearings

25,26‧‧‧Flange

30‧‧‧ crankshaft

40‧‧‧ pedal crank

41‧‧‧ pedal

50‧‧‧ pedal force sensing unit

51a, 51b‧‧‧ Piezo Pieces

Claims (5)

A bicycle pedal structure having an auxiliary power triggering function, which is configured to be disposed on a bicycle frame and coupled to a driving control system, the bicycle pedal structure comprising: a socket having a first opening and a first a second opening; a sleeve unit is disposed in the socket and has a first sleeve and a second sleeve, the first sleeve is assembled in the first opening, and the second sleeve is The crankshaft is disposed in the second socket; the crankshaft is sleeved by the first sleeve and the second sleeve and rotatably disposed in the socket; the two pedal cranks are respectively coupled to the bracket a crankshaft having two ends, the two pedals extending in opposite directions and substantially perpendicular to the crankshaft, each of the pedal cranks having a pedal for receiving the pedaling force to rotate the crankshaft; and a pedaling force sensing unit a plurality of piezoelectric sheets, the piezoelectric sheets being disposed at least on the first sleeve and the second sleeve and opposite to the crank shaft, wherein the sleeve unit is non-rotating, when The pedal force sensing unit, the piezoelectric sheets when the crank shaft rotates The sleeve unit does not rotate with the crankshaft. The bicycle pedal structure according to claim 1, wherein the pedal force sensing unit has four piezoelectric sheets, and the piezoelectric sheets are respectively disposed on the first sleeve and the second sleeve and are opposite to the bicycle pedal structure The position above and below the crankshaft. The bicycle pedal structure according to claim 1 or 2, wherein each of the first sleeve and the second sleeve has a bearing, and each of the bearings is for supporting the crankshaft. The bicycle pedal structure of claim 3, further comprising a rotational speed sensor disposed on the first sleeve and spaced apart from each of the piezoelectric sheets. The bicycle pedal structure of claim 4, wherein the first sleeve and the second sleeve outer sleeve each have a flange for snap-fastening in the socket.