TWI577604B - The speed of the bicycle can be cut off by speed - Google Patents

Description

Bicycle shifting system that can shift gears according to the speed of time

The present invention relates to the shifting technology of a bicycle, and more particularly to a bicycle shifting system that divides a shiftable gear position according to the speed of time.

US Patent No. 5,653,649 discloses a technique for performing a shifting operation using a computer system, which is characterized in that it has a rear derailleur and a front derailleur. In the acceleration operation, the rear derailleur is first controlled by its large gear to the smallest gear. In the gear, the front derailleur is controlled from the smallest gear to the maximum gear. In the deceleration operation, the rear derailleur is controlled to shift from the smallest gear to the largest gear, and then the front derailleur is changed from the largest gear to the smallest gear. files. Such a technique is a sequential shifting method that uses all gear positions, so that upshifting and downshifting are cycled through all gear positions according to a certain path. However, the actual riding state is often that the rider rides in a certain speed range according to his own physical conditions. The rider with good physical fitness often maintains the high speed in the middle and high speed, while the poor physical fitness often keeps the ride. At the medium and low speeds, the aforementioned shifting mode is not planned for shifting in the riding state that is always maintained in a certain speed section.

The Chinese patent CN 104071296A also discloses a technique similar to the aforementioned sequential shifting, however, it still does not have a plan for shifting in a riding state that is often maintained in a certain speed interval.

U.S. Patent No. 5,865,454 discloses the shifting control sequence of the front and rear derailleurs with gear shifting, with multiple sets of shift control sequences. However, it still does not have a plan for shifting in the riding state that is often maintained in a certain speed interval.

The main object of the present invention is to provide a bicycle shifting system that splits a shiftable gear position according to the speed of time, which can be used for a riding state that is always maintained in a certain speed interval, and according to the speed interval, a suitable interchangeable is adopted. The gear position is used, and the shift positions are used to perform the shifting action.

According to the present invention, a bicycle shifting system for splitting a shiftable gear position according to the present invention includes: a front derailleur disposed on a bicycle and corresponding to the front gear set of the bicycle, the front gear set having a plurality of gears from large to small, and one of the gears is coupled to the chain of the bicycle; a rear derailleur is disposed on the bicycle and corresponds to the rear gear set of the bicycle, the rear gear set having a plurality of large to small a gear, and one of the gears is coupled to the chain of the bicycle; and a microcomputer electrically connected to the front derailleur and the rear derailleur, and controlling the front derailleur and the rear derailleur to perform a shifting action; wherein the microcomputer has a a gear set gear table, wherein the gear set gear table has a plurality of gear ratios of each gear of the front gear set corresponding to each gear of the rear gear set; wherein the microcomputer further has a plurality of speed distinguishing shift logics, each The speed distinguishing shifting logic takes a plurality of gear ratios of a portion of the gear set gear table, and each of the speed distinguishing shifting logic systems respectively corresponds to one The speed interval, each of the speed intervals refers to setting a maximum speed, setting a minimum speed or referring to a range between a highest speed and a lowest speed; the microcomputer is adapted to meet a certain speed interval according to the current speed of the bicycle. The corresponding speed distinguishes the shifting logic, and uses the speed to distinguish the retrieved plurality of gear ratios corresponding to the shifting logic as the gear position to perform shifting according to a predetermined shifting sequence; wherein each of the speeds distinguishes the shifting gears The complex gear ratios taken by the logic are not exactly the same as those used by other speeds to distinguish the shift logic.

Thereby, the present invention can perform a shifting operation using the shiftable gears in accordance with the speed range in which the shiftable state is always maintained in a certain speed section, and the appropriate shiftable gears are used in accordance with the speed section.

In order to explain the technical features of the present invention in detail, the following preferred embodiments will be described with reference to the drawings, wherein:

As shown in FIG. 1 to FIG. 2, a bicycle shifting system 10 for splitting the shiftable gear position according to the first preferred embodiment of the present invention is mainly composed of a front derailleur 11 and a rear derailleur 21. And a microcomputer 31 consisting of:

The front derailleur 11 is disposed on a bicycle 90 and corresponds to the front gear set 91 of the bicycle 90. The front gear set 91 has a plurality of gears that are large to small, and one of the gears is coupled to the chain 99 of the bicycle 90.

The rear derailleur 21 is disposed on the bicycle 90 and corresponds to the bicycle 90 rear gear set 92. The rear gear set 92 has a plurality of gears that are large to small, and one of the gears is coupled to the chain 99 of the bicycle 90.

The microcomputer 31 is electrically connected to the front derailleur 11 and the rear derailleur 21, and controls the front derailleur 11 and the rear derailleur 21 to perform a shifting operation.

The microcomputer 31 has a gear set gear table 32 having a plurality of gear ratios of the gears of the front gear set 91 corresponding to the respective gears of the rear gear set 92 as gear positions. The gear set gear table 32 is as shown in the following list 1. The front gear set 91 is shown on the horizontal axis by taking three gears as an example, and the rear gear set 92 is shown on the vertical axis by taking 10 gears as an example. The ratio is the gear ratio, so there are 30 actual gear ratios.

Table 1

The microcomputer 31 has a plurality of speed-division-shifting logics 34. Each of the speed-division-shifting logics 34 takes a plurality of gear ratios of the portion of the gear set gear table 32, and each of the speed-division-shifting logics 34 corresponds to A speed interval, each of which refers to setting a maximum speed, setting a minimum speed or referring to a range between a highest speed and a lowest speed. The microcomputer 31 distinguishes the shifting logic 34 according to the current speed of the bicycle 90 according to the speed corresponding to a certain speed section, and uses the speed to divide the multiple gear ratios corresponding to the shifting logic 34. The gears are shifted in a predetermined shift sequence (eg, from a pinion ratio to a large gear ratio or from a large gear ratio to a pinion ratio). The plurality of gear ratios taken by the speed division shift logic 34 are not exactly the same as those of the other speed division shift logic 34. Moreover, when the speed of the vehicle changes so that the microcomputer 31 changes the speed division shifting logic 34 that is used, the shifting control may preferentially control the front derailleur 11 to perform shifting, or may also change according to the predetermined speed. The shifting is performed in the order of the gears; wherein, when the front shifter 11 is preferentially controlled to perform the shifting, the gears of the three gears of the front gear set 91 may have a large difference in the number of teeth, and more gear shifts may be generated. This can complete the shifting action relatively quickly; if the shifting is performed according to the predetermined shifting sequence, there will be a possibility that the gear position changes more, and the time taken for the shifting to complete will be longer, but It allows the rider to feel that the gear changes are meticulous and unobtrusive.

In the first embodiment, the speed division 34 is divided into three speeds, and the speed intervals corresponding to the speed division shift logic 34 are different from each other. Table 2 below shows the gear ratios taken by the shifting logic 34 for the speed corresponding to the speed range of 10 km/h or less.

Table 2

Table 3 below shows the gear ratio of the speed division shift logic 34 corresponding to the speed range between 10 and 20 km/h.

table 3

Table 4 below shows the gear ratios that the shifting logic 34 is used for the speed corresponding to the speed range of 20 km/h or more.

Table 4

As can be seen from the above Tables 2 to 4, the aforementioned speed intervals which are different from each other and which are adjacent to each other at least partially overlap in speed. For example, the speed interval corresponding to Table 2 is 10 km/h or less, and the speed interval corresponding to Table 3 is 10-20 km/h, so the overlap at 10 km/h is overlapped. Tables 3 and 4 are overlapped at a speed of 20 km/h.

The architecture of the first embodiment has been described above, and the mode of operation of the first embodiment will be described next.

Referring to FIG. 1 again, when the rider's riding speed is below 10 km/h, the microcomputer 31 performs the speed division shifting logic 34 corresponding to the speed interval, and takes the display shown in Table 2. Gear ratio is used as the basis for shifting, while in other speed ranges, the corresponding gear ratio in Table 3 (between 10 and 20 km/h) or Table 4 (20 km/h or more) is used. As a basis for shifting. Wherein, in the automatic shifting bicycle system, the microcomputer 31 determines whether to add or downshift and performs a corresponding shifting operation; in the manual shifting bicycle system, the rider manually inputs The shift command instructs the microcomputer 31 to perform an upshift or a downshift. It can be seen that when the rider's physical fitness is poor, he is often unable to ride very fast, and often keeps the speed below 10 km/h. Therefore, in the accessibility of the shiftable gear, only the corresponding The speed of this speed interval distinguishes the shift logic 34 and the gears in Table 2 are used. Since most of the riders are medium-sized, they will often stay between 10 and 20 km/h. Such a speed will perform the speed-shifting logic 34 corresponding to this speed range and use Table 3 accordingly. The stall. In the case of better physical fitness and permission of the road conditions, the vehicle speed is often maintained at 20 km/h or more. At this time, the speed division shifting logic 34 corresponding to this speed interval is executed and the gear position of Table 4 is used correspondingly.

In addition, if the riding state is stopped by the rider brake when the red light is encountered in the case of high speed (ie, more than 20 km/h), then the gear position may still be in a certain file corresponding to Table 4. Bit, if the lighter turns green and the rider wants to start, he will feel that the gear is too high and can't ride. At this time, the microcomputer 31 will take the gear of Table 2 according to the current speed, and then proceed. Shift action. If the shifting operation is preferentially controlled to shift the front derailleur 11 during this shifting operation, the shifting operation can be completed relatively quickly; if the shifting is performed according to the predetermined shifting sequence, there will be more gear shifts. The possibility of shifting will take longer, but it allows the rider to feel that the gear changes are not so detailed.

As can be seen from the above, the first embodiment can be used for the riding state that is always maintained in a certain speed interval, and the appropriate shiftable gear positions are taken according to the speed interval, and the shifting gears are used for shifting. action.

Referring to FIG. 3, a bicycle shifting system 10' for splitting the shiftable gear position according to the second embodiment of the present invention is mainly similar to the first embodiment. Lie in:

In the plurality of speed division shifting logics 34', the speed intervals corresponding to the partial speed division shift logic 34' are different from each other, and the speed intervals corresponding to the partial speed division shift logic 34' are identical to each other. However, corresponding to different riding modes, the riding modes refer to the entry mode and the professional mode.

In the second embodiment, the following table 2 to Table 4 in the first embodiment are respectively defined as different speed intervals of the entry mode (10 km/hour or less, 10-20 km/hour, 20 km/ The gears taken for more than an hour. In addition, three other tables (ie, Tables 5 to 7) are displayed, which are used in different speed ranges (10 km/hour, 10-20 km/hour, 20 km/hour or more) in the professional mode. Gear position. The contents of Tables 5 to 7 are listed below.

table 5

Table 6

Table 7

Therefore, in the second embodiment, Tables 2 to 4 and Tables 5 to 7 are the gear ratios of the speed division shift logic 34', and the speed intervals corresponding to Tables 2 to 4 are mutually Different, and the speed intervals corresponding to Tables 5 to 7 are different from each other. However, the speed ranges corresponding to Table 2 and Table 5 are all the same for 10 km/h or less, and the speed ranges corresponding to Table 3 and Table 6 are all between 10 and 20 km/h, and Table 4 and The speed ranges corresponding to Table 7 are all the same for 20 km/h or more, although they are the same in the speed range, but they correspond to different riding modes, and are respectively the entry mode and the professional mode.

It is worth mentioning that Table 2, Table 5, Table 3, Table 6 and Table 4, Table 7 correspond to the same speed interval. However, the corresponding positions of the two corresponding tables are not identical.

Compared with the first embodiment, the second embodiment has more access gears (shown in Tables 5 to 7) corresponding to the professional mode, which can facilitate the rider to make more diverse operation choices.

The remaining architectures of the second embodiment and the achievable functions are the same as those of the first embodiment, and will not be described again.

10‧‧‧Bicycle shifting system for splitting gears based on speed
11‧‧‧ Front derailleur
21‧‧‧ Rear derailleur
31‧‧‧Microcomputer
32‧‧‧ Gear set gear table
34‧‧‧Speed Distinguishing Shift Logic
10'‧‧‧Bicycle shifting system for splitting gears based on speed
34'‧‧‧Speed Distinguishing Shift Logic
90‧‧‧Bicycle
91‧‧‧Front Gear Set
92‧‧‧ Rear gear set
99‧‧‧Chain

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram showing a first preferred embodiment of the present invention. Figure 2 is a schematic view showing the structure of a bicycle according to a first preferred embodiment of the present invention. Figure 3 is a block diagram showing a second preferred embodiment of the present invention.

10‧‧‧Bicycle shifting system for splitting gears based on speed

11‧‧‧ Front derailleur

21‧‧‧ Rear derailleur

31‧‧‧Microcomputer

32‧‧‧ Gear set gear table

34‧‧‧Speed Distinguishing Shift Logic

Claims (5)

A bicycle shifting system for splitting a shiftable gear position according to a time speed, comprising: a front derailleur disposed on a bicycle and corresponding to the front gear set of the bicycle, the front gear set having a plurality of gears from large to small, And one of the gears is connected to the chain of the bicycle; a rear derailleur is disposed on the bicycle and corresponds to the rear gear set of the bicycle, the rear gear set has a plurality of gears from large to small, and one of the gears is connected to a chain of the bicycle; and a microcomputer electrically connected to the front derailleur and the rear derailleur, and controlling the front derailleur and the rear derailleur to perform a shifting operation; wherein the microcomputer has a gear set gear table, the gear set The gear table has a plurality of gear ratios of each gear of the front gear set corresponding to each gear of the rear gear set; wherein: the microcomputer further has a plurality of speed division shift logics, and each speed distinguishes the shift logic system Taking a plurality of gear ratios of a portion of the gear set gear table, each of the speed division shift logic systems respectively corresponding to a speed interval, each of the The interval is a section that sets a maximum speed, sets a minimum speed, or refers to a speed-based calculation between a maximum speed and a minimum speed; the microcomputer is adapted to a speed range according to the current speed of the bicycle. The corresponding speed distinguishes the shifting logic, and uses the speed to distinguish the retrieved plurality of gear ratios corresponding to the shifting logic as the gear position to perform shifting according to a predetermined shifting sequence; wherein each of the speeds distinguishes the shifting gears The complex gear ratios taken by the logic are not exactly the same as those of other speeds that distinguish the shift logic. The bicycle shifting system for splitting the shiftable gear position according to the first speed of the patent application scope, wherein: the speed intervals corresponding to the speed division shift logic are different from each other. The bicycle shifting system that divides the shiftable gear according to the speed of the first application of the patent scope, wherein: the speed range corresponding to the shifting logic is different from each other, and the speed of the part is different from the shifting logic. The corresponding speed intervals are identical to each other, but correspond to different riding modes, which refer to the entry mode and the professional mode. The bicycle shifting system for splitting the shiftable gear position according to the speed of the second or third application of the patent application, wherein: the aforementioned speed intervals which are different from each other and adjacent to each other at least partially overlap in speed. The bicycle shifting system that divides the shiftable gear according to the speed of the first application of the patent scope, wherein: when the speed of the vehicle changes such that the microcomputer changes the speed of the shifting logic, the shifting is performed During the operation, the front derailleur is preferentially controlled for shifting.