JPH0717460A - Gear setting device of bicycle - Google Patents

Abstract

PURPOSE:To automatically, easily and surely execute the traveling on the uphill road, and visually confirm the condition of gears by detecting the slant angle of the traveling road, setting and displaying the gear of a bicycle corresponding to the detected slant angle, and changing to the set gear to drive the bicycle. CONSTITUTION:When the front wheel of a bicycle is rotated, a transmitter mounted on the front wheel transmits the resonance pulse. On the other hand, a transmitter 7 mounted on the bicycle receives the resonance pulse. Then, CPU 25 counts the received signal to calculate the traveling distance, and RAM 26 stores the calculated results. When the specified period of time set by a timer circuit 30 is elapsed, the CPU 25 reads the altitude corresponding to the atmospheric pressure measured by a pressure gage 28 from the table of ROM 27 for the calculation. The slant angle of the traveling road is calculated and displayed in a display part 8 based on the difference in altitude and the traveling distance before and after the specified period of time is elapsed. In addition, the gear corresponding to the slant angle is read from the table of ROM 27 and displayed, and a gear changing part 29 is driven.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle gear setting device for setting gears according to the slope of a road.

[0002]

2. Description of the Related Art Conventionally, what is called a cycle computer is known as a device mounted on a bicycle. This cycle computer is composed of keys for inputting the circumference and target distance of the wheel of the bicycle, and a rotation detection device for detecting the rotation of the wheel, etc. The target speed is set and displayed. Further, the rotation detection device wirelessly transmits a magnet attached to the spokes of the front wheels, a magnetic detection unit fixed to the vehicle body side and located outside the rotation track of the magnet, and a magnetic detection signal from the magnetic detection unit. It is composed of a transmitter and a receiver that receives a signal from the transmitter.

Then, as the bicycle rotates, the front wheels rotate, and when the magnets attached to the spokes pass through the inside of the magnetism detecting portion, the magnetism detecting portion detects the magnetism and the transmitter detects the magnetism. The pulse signal is wirelessly transmitted in synchronization with. Then, the receiver receives the pulse signal, detects the start of the bicycle, counts the passage of the magnet thereafter, and calculates the integrated distance by the "integrated count number × perimeter". Further, the speed (hour speed) is calculated by “(3600 / count cycle) × perimeter”, and the calculated integrated distance and speed are displayed on the display unit provided on the receiver side.

[0004]

However, the speed and integrated distance displayed on the conventional cycle computer in this way are only data relating to the result of running. Therefore, even if the data on the result of running is displayed, it is not useful for the operation when running the bicycle, and is not useful for efficiently running the bicycle according to the road conditions.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a bicycle gear setting device useful for efficiently traveling a bicycle according to road conditions. It is a thing.

[0006]

In order to solve the above-mentioned problems, the present invention relates to an inclination angle detecting means for detecting an inclination angle of a traveling road, and an inclination angle detected by the inclination angle detecting means. Gear setting means to set the gear of the bicycle to
Gear display means for displaying the gear set by the gear setting means. Further, in another configuration of the present invention, it has a gear drive means for driving a transmission provided in the bicycle to change to a gear set by the gear setting means, or It has both gear display means and gear drive means.

[0007]

In the structure having the gear display means, when the bicycle runs on a road surface having an inclination angle, the inclination angle is detected by the inclination angle detecting means. Then, the gear setting means sets a bicycle gear corresponding to the detected inclination angle, and the set gear is displayed by the gear display means. Therefore, visually confirm the gear displayed on the display means,
By performing a gear change operation corresponding to this, traveling on an uphill road becomes easy. Further, in the configuration having the gear drive means, the transmission provided in the bicycle is driven to change to the set gear, so that even if the bicycle is driven, a suitable gear is obtained without manual operation by a person. It becomes possible to drive.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a bicycle 1 to which an embodiment of the present invention is applied.
FIG. 4 is a side view of the bicycle 1 in which the magnets 4 are attached to the spokes 3 of the front wheel 2 of the bicycle 1. On the other hand, a transmitter 6 is fixed to the vehicle body 5 of the bicycle 1 outside the rotation track of the magnet 4, and a receiver 7 is attached to a handle 5a above the transmitter 6. Further, a transmission device 51 is attached to the vehicle body 5, and the transmission device 51 is composed of an electromagnetic actuator that operates according to a signal from a gear change section described later. Then, by operating the electromagnetic actuator, the chain 56 is selectively engaged between the plurality of rear gears 53 provided on the rear wheel 52 side and the plurality of front gears 55 provided on the pedal 54 side. Thus, the transmission gear state of 1st to 6th is formed. Further, as shown in FIG. 2, the receiver 7 is provided with a display section 8 composed of an LCD, as shown in FIG. There are provided an input key 9 for inputting a speed, a set time, etc., a start key 10, an END key 11, and other keys 12 used for inputting a tire size of a bicycle.

FIG. 3 is a circuit diagram of the transmitter 6. The reed switch 13 shown in the figure is always off and is turned on when the magnet 4 passes inside the transmitter 6 as the front wheel 2 rotates, and the reed switch signal a is detected by the detection circuit 14.
Output to. The detection circuit 14 includes an oscillation circuit 15 inside, and the reed switch signal a from the reed switch 13 is supplied.
Is converted into a continuous clock signal b, the resistance 1
It is sent to the base terminal of the NPN type transistor 19 via 8. A capacitor 20 is connected between the collector terminal and the emitter terminal of the transistor 19, the collector terminal is connected to one end of the electromagnetic induction coil 21, and the emitter terminal is connected to the detection circuit 14. The voltage Vcc is applied to the other end of the electromagnetic induction coil 21 and one end of the capacitor 22 via the resistor 23,
The other end of is connected to the emitter terminal of the transistor 19. Therefore, the clock signal b is
Electromagnetic induction vibration is output from the electromagnetic induction coil 21.

FIG. 4 is a block circuit diagram showing the configuration of the receiver 7. In the figure, an electromagnetic induction signal from the electromagnetic induction coil 21 of the transmitter 6 is received by a reception circuit 24 having an electromagnetic induction coil (not shown), and the CPU 2
Sent to 5. The CPU 25 has a timer circuit 30, and a program stored in the ROM 27 and the RAM 26.
The receiver 7 as a whole is controlled by operating in accordance with the data stored in. Further, the CPU 25 controls the display unit 8 via the display drive circuit 31 and also controls the gear change unit 29 that drives the above-described transmission 51. From the key input section 34, the keys 9 to 1
The key operation signal is input from 1, and the atmospheric pressure is input from the pressure gauge 28.

The RAM 26 is provided with the registers 26a to 26d schematically shown in FIG. That is, the register 26a stores the tire size of the front wheels 2 input by operating the other keys 12 with the circumferential length. The register b stores “(3600 / count cycle) based on the passing count value of the next ON state from the ON (count) state when the magnet 4 has passed the vicinity of the transmitter 6.
The current traveling speed calculated by "x circumference" is stored. The register 26c stores the traveling distance calculated by "the total number of counts x circumference", and the register d
Stores the inclination angle of the traveling path calculated using the altitude and the distance.

The ROM 27 also stores the gear change conversion table 32 shown in FIG. 6 and the altitude-atmospheric pressure conversion table 33 shown in FIG. The gear change conversion table 32 (FIG. 6) has a configuration in which appropriate 6th to 1st gears are stored in each of the 6 types of tilt angle ranges,
Therefore, an appropriate gear can be specified from the tilt angle. Further, the altitude-atmospheric pressure conversion table 33 is configured to store the atmospheric pressure corresponding to each altitude, and therefore the altitude can be specified from the atmospheric pressure.

In the present embodiment having the above configuration, C
The PU 25 operates according to the flowchart shown in FIG. 8 and executes the cycle signal reception process (SA1). That is, when the front wheel 2 rotates and the magnet 4 passes inside the transmitter 6, the reed switch 13 provided in the transmitter 6 is turned on, and the reed switch signal a is generated as shown in FIG. To be done. Then, the detection circuit 14 outputs the clock signal b of a predetermined cycle, and the transistor 19 repeats on / off for a minute time. Thereby, the electromagnetic induction coil 21 of the transmitter 6 outputs a resonance pulse (electromagnetic induction signal) with a short time immediately after the magnet 4 passes.

The electromagnetic induction coil 21 on the transmitter 6 side
When a resonance pulse is output from, the electromagnetic induction coil provided in the reception circuit 24 generates a reception signal by the electromagnetic induction action. Therefore, the received signal is 1 for the front wheel 2.
It is input to the CPU 25 at the timing when the magnet 4 rotates inside the transmitter 6, that is, each time the front wheel 2 rotates once.
The CPU 25 counts this received signal. Then, in the next SA2, the traveling distance is calculated by the "integrated count number x circumference", and the calculated traveling distance is stored.

Next, it is judged whether or not a fixed time has passed (SA3), and if the fixed time has not passed, END
It is determined whether or not the key 11 has been operated (SA10), and if not operated, the process returns to SA1. Therefore, unless the END key 11 is operated, SA1 → SA2 → SA3 → SA10 → SA1 until a certain time elapses.
The loop is repeated, and the traveling distance is calculated accordingly. And after a certain period of time, SA
4 to SA9 processing is executed. In SA4 to SA9, the altitude is first calculated by the pressure gauge 28 in SA4.
That is, since the altitude-atmospheric pressure conversion table 33 shown in FIG. 7 stores the altitude and the atmospheric pressure in association with each other,
The current altitude can be calculated by reading the altitude corresponding to the atmospheric pressure detected by the pressure gauge 28.
In the next SA5, the tilt angle is calculated and displayed on the display unit 8.

The calculation of the tilt angle is performed as follows. That is, since the calculated new altitude is stored in SA8, which will be described later, when the altitude is stored in this SA8 and then the altitude is calculated again in SA4 after a certain period of time, it is stored in SA8 at this point. The altitude and the altitude at the time when a certain time has elapsed calculated at that time exist. Then, the difference between the two altitudes before and after this certain period of time is ΔH
And On the other hand, since the traveling distance is reset at SA9, which will be described later, when SA3 is YES and a certain time has elapsed, the traveling distance within this certain time is calculated. Then, the moving distance ΔL is set within a fixed time. Then, the inclination angle θ of the traveling road having the altitude difference ΔH and the traveling distance ΔL is θ = sin ⁻¹ (ΔH / ΔL)
Then, in SA5, the tilt angle θ is calculated by this formula and displayed.

After calculating and displaying the tilt angle θ, the gear corresponding to the tilt angle θ is read out from the gear change conversion table 32 shown in FIG. 6 and displayed (SA6).
Subsequently, gear change is executed (SA7). That is, in SA7, the CPU 25 outputs a gear signal of 6 to 1 stages corresponding to the inclination angle θ, and the gear change unit 29 generates a drive signal in accordance with the gear signal. Then, the transmission 51 operates in response to the signal output from the gear change unit 29, so that one of the 6th to 1st gear states is established. Subsequently, after performing the processes of SA8 and SA9 described above, it is determined whether or not the END key 11 is operated (SA10). And EN
The determination process of SA1 to SA10 is repeated until the D key 11 is operated, and the above control is ended when the END key 11 is operated.

FIG. 9 is a block circuit diagram showing the configuration of a receiver 7 according to another embodiment of the present invention. In this embodiment, an inclinometer 35 is used in place of the pressure gauge 28 of the embodiment shown in FIG.
The inclination angle of the vehicle body 5, that is, the inclination angle of the traveling path of the bicycle 1 is detected and input to the CPU 25. Also, the RAM 26
Are provided with registers 26a 'to 26e' shown in FIG. That is, the register 26a 'stores the tire size of the front wheels 2 input by the operation of the other keys 12 with the circumferential length. The register 26b 'stores "(3600 / count period) x circumference" based on the count period (seconds) from the ON (count) state to the next ON state when the magnet 4 passes near the transmitter 6. The calculated current traveling speed is stored. Further, the register 26c 'stores the traveling distance calculated by "integrated count number x circumference", the register 26d' stores the altitude calculated by using the inclination angle and the distance, and the register 2
The tilt angle detected by the inclinometer 36 is stored in 6e '.

In the present embodiment having the above configuration, C
The PU 25 operates according to the flowchart shown in FIG. 11 and executes the cycle signal reception process (SB1).
That is, when the front wheel 2 rotates and the magnet 4 passes inside the transmitter 6, the reed switch 13 provided in the transmitter 6 is turned on, and the reed switch signal a is generated as shown in FIG. To be done. Then, the oscillating circuit 15 outputs b, which is a clock signal of a predetermined cycle, and the transistor 1
9 repeats on and off for a minute time. Thereby, the electromagnetic induction coil 21 of the transmitter 6 outputs a resonance pulse (electromagnetic induction signal) with a short time immediately after the magnet 4 passes.

The electromagnetic induction coil 21 on the transmitter 6 side
When a resonance pulse is output from, the electromagnetic induction coil provided in the reception circuit 24 generates a reception signal by the electromagnetic induction action. Therefore, the received signal is 1 for the front wheel 2.
It is input to the CPU 25 at the timing when the magnet 4 rotates inside the transmitter 6, that is, each time the front wheel 2 rotates once.
The CPU 25 counts this received signal. Then, in the next SB2, the traveling distance is calculated by "total number of counts x circumference", and the traveling speed (hour speed) is calculated by "(3600 / count cycle) x circumference", and these are calculated as R
Store in AM26. Then, the inclination angle of the traveling road is measured by the inclinometer 35 (SB3), and the presence or absence of the inclination is determined (SB4). As a result of this determination, if there is no inclination, the process proceeds to SB7 to determine whether the END key 11 has been operated without executing the processes of SB5 and SB6. If not, the process returns to SB1.

If there is a tilt angle when the determination of SB4 is made, the gear corresponding to the tilt angle measured at SB3 is read from the gear change conversion table 32 shown in FIG. 6 and displayed. It is displayed on the section 8 (SB5). Subsequently, a gear change is executed (SB6), which causes the transmission 51 to operate in response to the signal output from the gear change unit 29 in the same manner as described above, whereby any one of the sixth gear to the first gear is selected. The gear state of is formed. In addition, SB1 to SB1 until the END key 11 is operated.
The determination process of 0 is repeated, and the above control ends when the END key 11 is operated.

[0022]

As described above, according to the present invention, the gear of the bicycle corresponding to the inclination angle of the traveling path is set and displayed. Therefore, by visually recognizing the displayed gear and performing a gear change operation in accordance with this, it is possible to facilitate traveling on an uphill road. In addition, since the transmission provided on the bicycle is driven to change to the set gear, it is possible to run in an appropriate gear without the manual operation of the person who rides the bicycle. . Furthermore, by changing the gear and displaying the set gear,
It is possible to check the automatically changed current gear state.

[Brief description of drawings]

FIG. 1 is a side view of a bicycle to which an embodiment of the present invention is applied.

FIG. 2 is an external front view of the transmitter and the receiver according to the embodiment.

FIG. 3 is a circuit diagram showing a configuration of a transmitter.

FIG. 4 is a block diagram showing a configuration of a receiver.

FIG. 5 is a diagram showing a memory configuration of a RAM.

FIG. 6 is a diagram showing the contents of a gear change conversion table stored in a RAM.

FIG. 7 is a diagram showing the contents of an altitude-atmospheric pressure conversion table stored in a RAM.

FIG. 8 is a flowchart showing the operation of the embodiment.

FIG. 9 is a block diagram showing a configuration of a receiver according to another embodiment of the present invention.

FIG. 10 is a diagram showing a memory configuration of a RAM in the example.

FIG. 11 is a flowchart showing the operation of the embodiment.

[Explanation of symbols]

 1 Bicycle 4 Magnet 6 Transmitter 7 Receiver 8 Display 25 CPU 26 RAM 28 Pressure gauge 29 Gear change portion 35 Inclinometer 51 Gearbox

Claims (6)

[Claims] 1. A tilt angle detecting means for detecting a tilt angle of a traveling road, a gear setting means for setting a bicycle gear corresponding to the tilt angle detected by the tilt angle detecting means, and a gear setting means. A gear setting device for displaying the generated gear, and a gear setting device for a bicycle, comprising: 2. An inclination angle detecting means for detecting an inclination angle of a traveling road, a gear setting means for setting a bicycle gear corresponding to the inclination angle detected by the inclination angle detecting means, and the gear setting means provided on the bicycle. A gear setting device for a bicycle, comprising: a gear driving unit that drives a transmission that is set to change the gear set to the gear set by the gear setting unit. 3. An inclination angle detecting means for detecting an inclination angle of a traveling road, a gear setting means for setting a gear of a bicycle corresponding to the inclination angle detected by the inclination angle detecting means, and setting by the gear setting means. A gear display means for displaying the set gear, and a gear drive means for driving a transmission provided in the bicycle to change to the gear set by the gear setting means. Gear setting device. 4. The bicycle display device according to claim 1, further comprising tilt angle display means for displaying the tilt angle detected by the tilt angle detection means. 5. The inclination angle detecting means, a traveling distance detecting means for detecting a traveling distance of the bicycle, an altitude detecting means for detecting an altitude based on atmospheric pressure, and the distance and the altitude detected by the both detecting means. The display device for a bicycle according to claim 1, 2 or 3, further comprising: an inclination angle calculating means for calculating an inclination angle based on the above. 6. The bicycle display device according to claim 1, wherein the inclination angle detecting means is an inclinometer mounted on the body of the bicycle.