TW201520125A - Torque detection device of electrical chain-free transmission bicycle - Google Patents

Abstract

The present invention relates to a torque detection device of an electrical chain-free transmission bicycle, which is specifically used in the arrangement of a torque detection device of a chain-free transmission axle-driving bicycle, characterized in that a torque detection device for controlling motor output torque is directly mounted on a driving axle to directly intercept the torque transmitted through the driving axle that is the last stage of power transmission in order to read the variation of torque of the driving axle for achieving an effect of precise detection and precise control of the motor output torque and also for making the structure simplified and compact thereby effectively reducing the cost and the consumption of space.

Description

Torque detecting device for electric chainless transmission bicycle

The utility model relates to a torque detecting device for an electric chain-free driving bicycle, in particular to a configuration of a torque detecting device for a shaft-driven bicycle dedicated to chainless transmission.

The generally known bicycle power transmission mode is divided into a chain transmission mode and a chainless shaft transmission. When the human pedal force acts on the crank of the bicycle, the power is transmitted to the rear wheel through the chain transmission or the chainless shaft transmission through the crank and the crank shaft to achieve the purpose of driving the bicycle forward.

In the bicycle travel, due to the topographical relationship or the physical strength of the rider, the human foot is often felt to work hard. Therefore, the related bicycle manufacturing industry has developed a motor-assisted electric bicycle for a general chain-driven bicycle, which enables the riding of a general chain-driven bicycle to be a human and electric choice. Regarding the power transmission technology of the chain-driven electric bicycle, the known transmission No. 498876 "Motorcycle transmission device", the announcement No. I245003 "Electric-assist bicycle transmission system", and the publication No. 200808611 "torque detecting device" "Electric bicycles", Announcement No. 289328 "Electric bicycles", Announcement No. 390327 "Bicycle electric booster", Announcement No. 315351 "Power assisted bicycle power assisting device", Announcement No. M419100 "Electric bicycle pedaling force" "Sensing Agency", Announcement No. 389216 "Electric Bicycle Power Assist" and Announcement No. 302339 "Bicycle with Auxiliary Power".

And the technology of using the relevant torque detecting device for controlling the output torque of the motor Creation, for example, Announcement No. 370066, "Feeling Structure of Electric Bicycles", Public No. 201144143, "Treading Torque Sensing Device for Electric Bicycles", Public No. 20060811, "Torque Detecting Device and Electric Assisted Bicycle", Announcement No. 400837 No. I226433 "Electrical assisted bicycle pedaling force detecting device", etc., to achieve the effect of controlling the output torque of the motor.

However, looking at the above-mentioned prior art creation literature, it is known that the pedaling force sensing of the related motor output torque control is designed for the bicycle of the general chain transmission mode, and the detection of the relevant pedaling force and the torsion force is also set between the components of the crankshaft. That is to say, the above-mentioned detection technology for controlling the output torque of the motor is to provide the electric power auxiliary benefit of the chain type transmission bicycle and the control of the output torque of the motor. Under the same target, the same technical scope is developed, and different technical thoughts are considered. The difference in industrial utilization and economic benefits of different structures and different costs, but there is no research and development of related technologies for the application of chain-free transmission shaft-driven bicycles.

Therefore, how to innovate and develop a related torsion detection technology for the chain-free transmission shaft drive bicycle is the goal of the technology improvement of the chain-free transmission bicycle industry.

The creation of the case is a configuration of a torsion detecting device for a shaft-driven bicycle that is suitable for chainless transmission, and its creation purpose is:

1. The detection device for controlling the output torque of the motor of the chain-free bicycle is directly arranged on the transmission shaft, and directly intercepts the transmission torque of the last transmission shaft in the power transmission to read the torque variation of the transmission shaft to achieve accurate detection and precision. Motor output torque control benefits.

2. Providing a configuration of a torsion detecting device for a shaft-driven bicycle without a chain drive, which makes the related structure more compact and concentrated, and has fewer parts, thereby effectively reducing the use of cost and space.

The creation feature of the case is: the torsion detecting device for controlling the output torque of the motor is arranged on the transmission shaft, and directly intercepts the transmission torque of the last section of the power transmission to read the torque variation of the transmission shaft, and effectively reduces the electric power The uncontrollable factors in system control achieve accurate detection and accurate motor output torque control benefits.

1‧‧‧ frame

2‧‧‧Crank mechanism

20‧‧‧ crankshaft

21‧‧‧ crank

3‧‧‧ drive shaft

3A‧‧‧Power Output

3B‧‧‧After the drive shaft

4‧‧‧Rear drum passive gear

5‧‧‧Torque testing device

5A‧‧‧Angle displacement torque sensor

51‧‧‧Torque rod

52‧‧‧fixed pin

6‧‧‧C-shaped buckle

7‧‧‧Power output induction loop

8‧‧‧Torque spring

Figure 1: Schematic diagram of a chainless bicycle.

Fig. 2 is an axially separated configuration example of the torsion detecting device of the present invention.

Figure 3: A radially separated configuration example of the present torsion detecting device.

Figure 4: An integrated axially separated configuration embodiment of the present torsion detecting device.

Fig. 5 is a perspective view of a torsion bar type axial separation type configuration of the present torque detecting device.

Figure 6: An integrated radial separation configuration embodiment of the present torsion detecting device.

Fig. 7 is a perspective view of a torsion spring type radial separation type of the torsion detecting device of the present invention.

Please refer to the configuration diagram of the torque detecting device in this case shown in Figures 1 to 7. The main feature is that the torsion detecting device for controlling the output torque of the motor is arranged on the transmission shaft, and directly intercepts the transmission torque of the last section of the power transmission to read the torque variation of the transmission shaft, and effectively reduces the control in the electric system. The uncontrollable factor of time achieves accurate detection and accurate motor output torque control benefits.

As shown in Figures 1 to 7, the configuration of the torsion detecting device of the present invention is schematically implemented. For example, the first figure is a schematic diagram of a chainless transmission bicycle, comprising a frame 1, a crank mechanism 2, a crank 21, and a power transmission transmission shaft 3 interposed between the crank mechanism 2 and the rear wheel drum driven gear 4. As shown in the embodiment of Fig. 2, the torque detecting device 5 for controlling the output torque of the motor unit is disposed on the transmission shaft 3, and the amount of torque change measured by the torque detecting device 5 of the device on the transmission shaft 3 is human. The torque of the transmission shaft 3 is transmitted, so the original transmission shaft 3 needs to be divided into two parts. The first part is the power output part 3A of the front part of the transmission shaft for outputting the torque provided by the crank 21, and the second part is the rear part of the transmission shaft. 3B is used to transmit torque to the rear wheel to drive the rear wheel to rotate. The torsion detecting device 5 is disposed between the front axle power output member 3A of the transmission shaft and the rear portion 3B of the transmission shaft.

The splitting mode according to the transmission shaft 3 can be an axial split type and a radial split type. As shown in Fig. 2, in the axially separated arrangement embodiment of the torsion detecting device 5, the torsion detecting device 5 is disposed between the separated transmission shaft front power output member 3A and the transmission shaft rear portion 3B. As shown in Fig. 3, the radial separation type arrangement of the torsion detecting device 5 is such that the separated transmission shaft front power output member 3A and the transmission shaft rear portion 3B are radially disposed inside and outside, and the torque detecting device 5 is disposed. Between the front and rear sections 3A of the transmission shaft and the rear section 3B of the transmission shaft which are separated by two layers in the radial direction.

As shown in Fig. 4, the integrated axial split configuration embodiment of the torque detecting device 5 adopts an axial split type, and the torque detecting device 5 is disposed in the axially separated drive shaft front power output member 3A and the transmission. Between the rear sections of the shaft 3B.

As shown in FIG. 5, the torsion bar type axial separation type configuration embodiment of the torque detecting device 5 adopts an axial separation type, and the torque detecting device 5 uses a torsion bar 51 and an angular displacement type torsion sensor 5A. Instead, the torsion bar 51 is coupled to the drive shaft front power output member 3A and the transmission shaft rear portion 3B by a fixing pin 52.

The integrated radial separation configuration of the torque detecting device 5 as shown in Fig. 6 For example, the transmission shaft 3 adopts a radial separation type, and the power transmission part 3A of the front part of the transmission shaft is fixedly arranged on the rear section 3B of the transmission shaft with a C-shaped buckle 6 , and the torque detecting device 5 is disposed in the front section of the transmission shaft of the radial separation. Between the piece 3A and the rear section 3B of the drive shaft.

As shown in Fig. 7, the torque spring type radial separation type embodiment of the torque detecting device 5 adopts a radial separation type, and the power shaft 3A of the front part of the transmission shaft is fixedly arranged in a C-shaped buckle 6 on the transmission shaft. In the rear section 3B, the torsion detecting device 5 is disposed between the radially separated drive shaft front power output member 3A and the transmission shaft rear portion 3B, and a power output member is disposed between the torque detecting device 5 and the front axle power output member 3A of the transmission shaft. A torsion spring 8 is disposed between the induction ring 7 and the radially separated drive shaft front power output member 3A and the transmission shaft rear portion 3B.

The torsion detecting device 5 for controlling the output torque of the motor by the present invention is disposed on the transmission shaft 3, and can directly intercept the transmission shaft 3 of the last section of the power transmission to transmit the torsion force, thereby reading the torque variation of the transmission shaft 3, and effectively reducing the amount of torque With the uncontrollable factors in the control of the electric system, it can achieve accurate detection and accurate motor group output torque control benefits.

Therefore, the creation of this case can achieve the following benefits:

(1) Torque detection of a shaft-driven bicycle that can provide a chain-free transmission.

(2) The torsion detecting device for controlling the output torque of the motor is arranged on the transmission shaft, and directly intercepts the transmission torque of the last section of the power transmission to read the torque variation of the transmission shaft, and effectively reduces the control when the electric system is controlled. Uncontrollable factors for precise detection and accurate motor output torque control benefits.

(3) It has indeed achieved high industrial utilization and high economic efficiency.

(4) The structure is more streamlined and concentrated, and the number of parts is smaller, which effectively reduces the use of cost and space.

The above embodiments are merely preferred embodiments for fully illustrating the creation of the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art based on the creation of the present technology are all within the scope of protection of the present invention.

3A‧‧‧Power Output

3B‧‧‧After the drive shaft

5‧‧‧Torque testing device

Claims (9)

A torque detecting device for an electric chain-free driving bicycle, the electric chain-free driving bicycle comprises a frame, a crank mechanism, a crank, a power transmission transmission shaft between the crank mechanism and the passive gear of the rear drum, and a motor group for providing auxiliary power and The torsion detecting device for controlling the output torque of the motor is characterized in that: the torsion detecting device for controlling the output torque of the motor is disposed on the power transmission transmission shaft between the crank mechanism and the passive gear of the rear drum, and directly intercepts the transmission shaft transmission of the last segment of the power transmission Torque to read the torque change of the drive shaft to detect and control the output torque of the motor. The torque detecting device for an electric chain drive bicycle according to claim 1, wherein the torque detecting device is disposed on a power transmission transmission shaft between the crank mechanism of the chainless bicycle and the passive gear of the rear drum, the transmission The shaft is divided into two parts. The first part is the power output part of the front part of the transmission shaft for outputting the torque of the crank. The second part is the rear part of the transmission shaft for transmitting the torque to the rear wheel to drive the rear wheel to rotate. The torque detecting device is arranged in the transmission. The front part of the shaft is between the power output and the rear section of the drive shaft. The torque detecting device of the electric chain drive bicycle according to the second aspect of the patent application, wherein the front power transmission member of the transmission shaft and the rear portion of the transmission shaft are axially separated. The torque detecting device for an electric chainless transmission bicycle according to the third aspect of the patent application, wherein the power output member of the front portion of the transmission shaft and the rear portion of the transmission shaft are axially separated, and the torque detecting device is disposed in the axially separated transmission shaft. The front power output member is between the rear part of the drive shaft. According to the torque detecting device of the electric chain-free transmission bicycle according to the third aspect of the patent application, wherein the power output part of the front part of the transmission shaft is axially separated from the rear part of the transmission shaft, and the torque detecting device is a torsion bar and an angular displacement type torque sensing. The two ends of the torsion bar are combined with a fixing pin and a front part of the power shaft of the transmission shaft and a rear section of the transmission shaft. The torque detecting device for an electric chain drive bicycle according to the second aspect of the patent application, wherein the front power transmission member of the transmission shaft and the rear portion of the transmission shaft are radially separated. The torque detecting device for the electric chain drive bicycle according to the sixth aspect of the patent application, wherein the power output member of the front section of the transmission shaft and the rear portion of the transmission shaft are disposed radially apart from the inner and outer layers, and the torque detecting device is disposed in the diameter. Between the front section of the drive shaft separated from the inner and outer layers and the rear section of the drive shaft. The torsion detecting device of the electric chain-free transmission bicycle according to the sixth aspect of the patent application scope, wherein the power output part of the front part of the transmission shaft and the rear part of the transmission shaft are radially separated, and the power transmission part of the front part of the transmission shaft is fixedly arranged on the transmission shaft. In the rear section, the torsion detecting device is disposed between the radially separated drive shaft front power output member and the rear portion of the transmission shaft. The torsion detecting device of the electric chain-free transmission bicycle according to the sixth aspect of the patent application scope, wherein the power output part of the front part of the transmission shaft and the rear part of the transmission shaft are radially separated, and the power transmission part of the front part of the transmission shaft is fixedly arranged on the transmission shaft. In the rear section, the torsion detecting device is disposed between the front-end power output member of the radially separated drive shaft and the rear portion of the transmission shaft, and a power output member induction ring is disposed between the torque detecting device and the front power output member of the transmission shaft, and the radial direction A torsion spring is disposed between the front power transmission member of the separated transmission shaft and the rear portion of the transmission shaft.