JP2532987B2 - Bicycle display - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle display device that calculates running contents such as speed and distance from the number of revolutions of a bicycle wheel and displays the contents.

2. Description of the Related Art Generally, in a conventional bicycle display device of this type, a meter case installed in a handle portion of a bicycle
Based on a signal from a detection sensor that detects the number of rotations of the wheels, a calculation device such as a microcomputer that calculates the travel content, a display such as an LCD that displays the calculated travel content, a battery, and the like are incorporated. , Further provided with a plurality of operation switches, by operating these operation switches, wheel dimensions such as the diameter of the wheel required to calculate the travel content, and the selection of the display unit for displaying the travel content, and the operation device Is configured to register.

In the selection and registration, for example, the wheel size and the display unit are selected by the first operation switch, and the selected wheel size and the display unit are registered by the second operation switch. The first operation switch has a plurality of wheel diameters, such as 24 inches and 26 inches, and has a display unit such as a kilometer display or a mile display. Therefore, the first operation switch may be provided in a combined number.

Therefore, in the above-described conventional configuration, since a plurality of operation switches are provided for selecting and registering the wheel size and the display unit, it is difficult to reduce the size and weight of the device, and the operation is difficult. The parts cost of the switch itself and the wiring cost thereof are high, and the operation is troublesome.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a bicycle display device that can be reduced in size, weight, and cost and is easy to operate.

Means for Solving the Problems According to the present invention, the number of rotations of a bicycle wheel is detected by a detection sensor, the running content is calculated by a calculation unit based on the result, and the calculation result is displayed on a display. In this bicycle display device, a storage unit in which a plurality of sets of display units for displaying wheel dimensions and travel contents used for calculation of travel contents are set, and one of the plurality of sets set in the storage unit An operation switch for selecting one of the sets, and a registration unit for registering one set selected by the operation switch when the number of revolutions detected by the detection sensor is not zero and giving it to the calculation unit. And

Operation In the present invention, one is selected from the set of a plurality of wheel sizes and display units set in the storage means by the operation switch. In this state, it is not yet registered in the calculation means. After that, when the bicycle is moved and the detection sensor outputs a signal whose rotation speed is not zero, the information selected based on the signal is registered in the calculation means.

Example An example of the present invention will be described below with reference to FIGS. 1 to 7.

FIG. 2 is a side view of a main portion of a bicycle equipped with a bicycle display device according to an embodiment of the present invention, in which a front hawk 2 of a bicycle frame 1 detects a rotation speed of a front wheel 3, that is, a rotation speed per unit time. The detection sensor 4 is installed. The detection sensor 4 is connected to a display device body 7 attached to a handle 6 by a lead wire 5.

The detection sensor 4 detects a magnet (not shown) attached to a spoke (not shown) of the front wheel 3 and outputs a signal corresponding to the rotation speed of the front wheel 3 to the display device body 7. The detection sensor 4 is not limited to the magnetically-detecting type described above, but may be one that detects by another method.

FIG. 3 is a side view of the display device main body 7, and FIG. 4 is a plan view of the same. In order to set the wheel size and the display unit on the lateral lower part of the vertically split type meter case 8 by a push button button switch or the like. The operation switch 9 is attached. On the upper surface of the meter case 8, a display 11 made of an LCD or the like for digitally displaying the traveling speed and the like is installed.

FIG. 1 is a circuit block diagram of a bicycle display device according to an embodiment of the present invention. A chip type microcomputer 12 installed inside a meter case 8 (FIGS. 3 and 4) is used for a bicycle. First storage means 13 for storing a plurality of wheel sizes and display units, and 1 read out from the first storage means 13 by operating the operation switch 9 when the speed detected by the detection sensor 4 is zero.
Reading means 14 for displaying the wheel size and the display unit of the set on the display unit 11, and for reading the wheel size and the display unit for another set each time the operation switch 9 is operated and displaying them on the display unit 11, and the rotation speed. Second storage means 15 for registering the contents read by the reading means 14 when the speed detected by the detection sensor 4 is not zero, and traveling based on signals from the detection sensor 4 and the second storage means 15. A traveling speed calculating means 16 for calculating a speed, a traveling distance calculating means 17 for calculating a traveling distance based on signals from the detection sensor 4 and the second storage means 15, and a traveling distance calculated by the traveling distance calculating means 17. Mileage storage means 18 for storing, read-out means 14, mileage calculation means 16 and mileage storage means
And a display drive means 19 for converting and selecting signals from 18 and driving the display 11.

The reading means 14, the traveling speed calculating means 16, the traveling distance calculating means 17, and the display driving means 19 are provided in the microcomputer 12
It is realized as software by the CPU.

The first storage means 13 stores 26,27,20,22,24 inches corresponding to diameters as wheel dimensions, and km / h and mile / h as display units. In other words, the combination of wheel size and display unit is 26, km /
h, 2nd group is 27, km / h, 3rd group is 20, km / h, 4th group is 22, km
/ h, 5th group is 24, km / h, 6th group is 26, mile / h, 7th group is 2
7, mile / h, 8th group is 20, mile / h, 9th group is 22, mile / h,
10 sets are 24, mile / h.

Next, the operation will be described. When the operation switch 9 is operated while the bicycle is stopped, the reading means 14 causes the wheel size and the display unit of the first set from the first storage means 13 to be 26 inches, k.
Read m / h. As a result, the display unit 11 has the speed display unit 11a.
0 is displayed in FIG. 5, km / h is displayed in the speed unit display section 11b, and 26 is displayed in the travel distance display section 11c.
Blink km / h and 26 on the mileage display 11c. Then, every time the operation switch 9 is operated, the reading means 14 makes
The wheel circumferences and speed units of the second and subsequent groups are sequentially read from the storage means 13 and are sequentially displayed on the display 11.
For example, when the operation switch 9 is operated twice, km / h is displayed on the speed unit display portion 11b, 27 is displayed on the traveling distance display portion 11c, and these are blinked as shown in FIG.

When the bicycle is run in this state, the rotation speed signal from the detection sensor 4 is input to the reading means 14, and the contents read by the reading means 14 are stored in the second storage means 15. The second storage means 15 may be provided in the traveling speed calculation means 16 and the traveling distance calculation means 17 so that necessary contents can be separately stored separately. Then, the display content of the mileage display section 11c is switched, and the sixth
The mileage is displayed as shown. The speed unit display section
The displays on 11b and the mileage display section 11c do not blink.
Furthermore, based on the signals from the detection sensor 4 and the second storage means 15, the traveling speed calculation means 16 calculates the traveling speed, and the traveling distance calculation means 17 calculates the traveling distance and stores the calculation result in the traveling distance. It is stored in the means 18. The signals from the traveling speed calculation means 16 and the traveling distance storage means 18 are input to the display driving means 19, which causes the display driving means 19 to drive the display device 11 to display the traveling speed and the traveling distance.

When the bicycle is stopped and the operation switch 9 is operated, the reading means 14 reads the wheel size and the display unit of the first set from the first storage means 13, and the wheel size and the display unit are reset by the same procedure as described above. It will be possible. When the operation switch 9 is not operated even when the bicycle is stopped, the wheel size and the display unit already registered in the second storage means 15 are stored in the backup power source such as a battery, Even if the bicycle is moved, the stored wheel dimensions and display units are used.

The operation of the microcomputer 12 for realizing the above setting operation will be described with reference to the flowchart of FIG. First, in step 1, the wheel size of the first set is 26
The inch and the speed unit km / h are read out, and the routine proceeds to step 2 to judge whether or not the speed detected by the detection sensor 4 is not zero. If the speed detected by the detection sensor 4 is zero in step 2, the process proceeds to step 3 to determine whether or not the operation switch 9 is operated, and if it is operated, the process proceeds to the next step. That is, the operations similar to those in steps 1 to 3 are sequentially repeated for the wheel size and the display unit of the second and subsequent sets. When the final set, the 10th set, is reached, the wheel size of 24 inches and the speed unit mile / h of the 10th set are read in step 4, and the process proceeds to step 5 to check whether the detection speed by the detection sensor 4 is zero. to decide. If the speed detected by the detection sensor 4 is zero in step 5, the process proceeds to step 6 to determine whether or not the operation switch 9 is operated, and if it is operated, the process returns to step 1. If the speed detected by the detection sensor 4 is not zero in step 2, the process proceeds to step 7 and the wheel size of the first set 26
Register inches and speed unit km / h as set values. If the operation switch 9 is not operated in step 3, the process returns to step 1. Detection sensor 4 in step 5
If the speed detected by is not zero, proceed to step 8
Register 10 sets of wheel dimensions of 24 inches and speed unit mile / h as set values. If the operation switch 9 is not operated in step 6, the process returns to step 4.

In this way, since the desired wheel size and display unit can be selected and set by operating one operation switch 9,
The size and weight of the device can be reduced, the parts cost of the operation switch 9 itself and the wiring cost thereof can be reduced, and the operation becomes easy. Further, as in the present embodiment, if the display contents of the traveling distance display unit 11c are switched to share the traveling distance display unit and the wheel circumference display unit, the configuration of the display unit 11 can be simplified. Further, as in the present embodiment, if the wheel size and the display of the display unit are made to blink at the time of setting, it is possible to emphasize to the operator that it is in the setting mode, and it is possible to reduce careless setting mistakes.

In the above embodiment, the display contents of the mileage display unit 11c are switched to share the mileage display unit and the wheel diameter display unit, but the present invention is not limited to such a configuration. Alternatively, the display unit for the traveling distance and the display unit for the wheel diameter may be separately provided. Further, the wheel diameter may be displayed on the speed display unit 11a.

Further, in the above-mentioned embodiment, the wheel diameter and the display of the speed unit are blinked at the time of setting, but the present invention is not limited to such a configuration, and it is not always necessary to blink.

Further, in the above-mentioned embodiment, when the setting is made again after the bicycle is run, the reading means 14 is configured to read the wheel size and the display unit of the first set by operating the operation switch 9 once. Is not limited to such a configuration, and the reading means 14 may be configured to read the currently set wheel size and display unit.

As described above, according to the present invention, one of a plurality of wheel sizes and display units set in the storage means is selected by the operation switch, and then the bicycle is moved to rotate from the detection sensor. When a signal whose number is not zero is issued, the information selected on the basis of the signal is registered and given to the calculating means, so that the desired wheel size and display unit are selected by operating one operation switch. Since it is possible to set the size and weight of the device, it is possible to reduce the size and weight of the device, reduce the component cost of the operation switch itself and the wiring cost thereof, and further, the operation is easy.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a bicycle display device according to an embodiment of the present invention, FIG. 2 is a side view of a main part of a bicycle equipped with the bicycle display device, and FIG. 3 is a side view of a display device body.
FIG. 4 is a plan view of the same, FIGS. 5 and 6 are explanatory diagrams of display contents on the display, and FIG. 7 is a flowchart of setting operation by the microcomputer. 3 ... front wheel (wheel), 4 ... detection sensor, 9 ... operation switch, 11 ... indicator, 13 ... first storage means, 14 ...
Reading means, 15 ... second storage means (registration means), 16
...... Movement speed calculation means (calculation means), 17 …… Movement distance calculation means (calculation means)

Claims (1)

(57) [Claims] 1. A bicycle display in which the number of revolutions of a bicycle wheel is detected by a detection sensor, the traveling content is calculated by a calculation means based on the detection result, and the calculation result is displayed on a display. In the apparatus, storage means in which a plurality of display units for displaying wheel dimensions and travel content used for calculation of travel content are set, and an operation switch for selecting one of the plurality of sets set in the storage means. And a registration means for registering one set selected by the operation switch when the number of rotations detected by the detection sensor is not zero and for giving the set to the calculation means. .