JPS59141094A - Speedometer for bicycle - Google Patents

Abstract

PURPOSE:To upgrade the operability during the use of a speedometer by providing a digital display having a time display section and a min/sec display section to enable the indication of information such as running speed and distance while preventing the lowering of the visual perceptibility. CONSTITUTION:A liquid crystal type digital display unit 6 and a function display/setting selection switch group 11 are arranged on a display surface 2 of a speedometer 2 for bicycles. When a switch 12h is depressed, a time display section 7 of a display 6, a colon section 9 and a min/sec display section 8 are used to display the current time and the section time. When switches 12a, 12c and 12d are depressed, a running distance or revolutions of a crank is indicated on a time display section 7 while the first item of a function/unit display section 10 is displayed. A running speed is displayed at the min/sec display section 8 while the first item is displayed on the display section 10.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a bicycle speedometer that measures and digitally displays the running speed and time of a bicycle.

(b) Technology It is already known that this type of bicycle speedometer uses a light emitting diode type or liquid crystal type digital display as an indicator to digitally display traveling speed, distance traveled, time, etc.

However, in this type of conventional example, due to the size of the speedometer itself, manufacturing cost, etc., information such as traveling speed, traveling distance, time, etc. is selectively displayed one by one on one digital display. Ta.

(C) Purpose of the Invention The present invention uses the time display part and the minute/second side display part of the 1@ digital display used for time display separately to display two types of information such as traveling speed and traveling distance. By doing so, the space of the display device is used for the sound, which eliminates the decrease in visibility, and also improves the operability when using the speedometer.

B) Overview of the Invention The bicycle speedometer of the present invention measures and displays time and information other than time, such as the running speed and distance of the bicycle, and has a time display section and a minute/second side display section. The digital display is equipped with a digital display coffin, and the FRf" display part and the minute/second side display part of the digital display are used simultaneously to display the time, while the time display part and the minute/second side display part of the digital display are used simultaneously. (e) Embodiment (+) is a bicycle, and (2) is a wooden bicycle attached to the handlebar of the main bicycle. (3) is the speedometer for the bicycle (1).
) and the first magnet 1/I/rc (3b) attached to the stay pipe. A wheel rotation sensor (4) that provides a pulse is a second &/?? mounted on the crankshaft of the bicycle (1). :+ (4a) and the second hole C (4b) attached to the vehicle body pipe are the crank rotation sensor which gives a crank rotation pulse to the speedometer (21).

(6) is the display surface of the speedometer (2), (6) is a liquid crystal digital display, and the display (6) has a capital letter 3 in the center part.
The digit time display section (7) and the minute/second display section (8) with 2 digits of uppercase letters and 2 digits of lowercase letters are arranged side by side via a colon section (9), and <LAP><T* is placed in the upper and lower parts. TRI P><mi
Ie><km><MAX><AVE><m1le/h
><km/h><krpm> function/unit display section Q
Further, (II) is a function display/setting designation switch group, (12a) is the first key switch for calling the running speed, (12b) is the second key switch for calling the maximum value/average value, (12c) is the third key switch for calling the total mileage/unit mileage, (12d) is the fourth key switch for crank rotation speed output, (12e) is the fifth key switch for start/stop, ( 12f) %6 for U reset
Key switch, (12g) is the 7th key switch for constant call for lap time/target distance, (12h) is current time/
The eighth key switch (13a) is for unit selection/digit designation.
When the clock mode is set by pressing , the IJ indicator (6) blinks in the time display section (7) → the minute section of the minute/second display section (8) → the second section of the minute/second display section (8). , and so on at predetermined time intervals to specify the setting location, and the 1.3 and 4.7 key switches (12a) (12c)
(12d) When the mode other than the clock is set due to the suppression of any of (12g), the function of the display (6) is
The unit of display (101) is switched sequentially for each playback to specify the setting unit, and (13b) is a set switch for setting numbers;
b) works with the select switch (13a) to set the number of the time display section (7) and minute/second display section (8); By pressing the speedometer +21 at the beginning of use, the display on the display (6) changes from 20→22→24→26-+
The wheel diameter of the bicycle used can be set as desired, changing sequentially from 27 to 20 inches.

When the miJ 8th key key (12h) is pressed, the mf+ display (6)'s time II display (7) is pressed.
), colon part (9), and minute/second side display part (8) to hear the current time or section time.
) Please display the usage time after pressing Figure 3 (a)
Reference>, on the other hand, the first and third and fourth key switches (12a
) (12, c) When (12d) is pressed, the time display f! on the display (6) is pressed. The mileage or crank rotation speed is displayed on l1s (71), and the function/unit display section (10
In addition to displaying either <m i l e><km><rpm> of j, the running speed is displayed on the minute/second side display section (8), and <m1 le/ of the function/unit display section (lO;) is displayed. h＞
Figure 3 (
(b) (See (c))

Furthermore, FIG. 4 shows an electric circuit housed in the speedometer (2) for performing the above-mentioned operations.
In the same figure, (IJ is the system clock that controls the entire system, 05+ is the count clock that determines the time standard, (161 is operated by these, and the function display / setting designation switch group (wheel rotation sensor ( The wheel rotation pulse from 3) and the crank rotation pulse from the crank rotation sensor (4) are input to calculate the running speed, mileage, crank rotation speed, time, etc., and the output is displayed on the digital display (6). It is a microcomputer that outputs a setting notification output 07) that records the pressing of the switch group 01.

Furthermore, Fig. 5 is a flowchart showing the main part of the display-related 815 minutes extracted from the processing procedure calculated by the microcomputer 06). It is determined whether the specified switch group (I) is suppressed (on), and if it is pressed, the key switch is a patent-related key switch, 7th key switch (12g) or 8th key switch (12g).
h)>, the time display section (6) of the liJ display (6)
7), the colon display section (9) and the minute/second display section (8) are used to display the foot time, current time, or section time, while the speed-related key switch (12a) or the distance-related key switch (12a) key switch <3rd
Key switch (12c) or 7th key switch (12g)
)>, then F! on the display (6). ? J Pig: Display part f
The running distance is displayed on the 7+, the running speed is displayed on the minute/second side display section (8), and the corresponding information is displayed on the function/unit display section (10).
12d), the time display part (7) of the display (6)
) displays the crank rotation speed, the minutes/seconds display section (8) displays the running speed, and the corresponding function/unit display section (lO).

(f) Effects of the Invention As described above, the bicycle speedometer of the present invention displays the time by simultaneously using the time display part and the minute/second side display part of one digital display, and these The display section and the minute/second side display section can be used individually to display the driving speed, and the Z base of the display can be effectively used to prevent deterioration of visibility. This reduces pressing operations and improves operability when using the speedometer, thereby contributing to traffic safety and significantly reducing manufacturing costs.

[Brief explanation of drawings]

The drawings respectively relate to an embodiment of the bicycle speedometer of the present invention, and FIG. 1 is an overall view, FIG. 2 is an explanatory view of the display surface including a digital display, and FIGS. 3 (A), (B), and ( C) is dog digital/
The display state diagram of the V display, FIG. 4 is an electric circuit diagram, and FIG. 5 is a flowchart of the main parts. (6)...Liquid crystal digital) v display, (7)...Time display section, (9)...Colon display section, (8)...Minute/second side display section. Figure 1 Figure 2 Figure 3 Figure 7 10 B Figure 4 Figure 5

Claims (1)

[Claims] (1) A device that measures and displays time m1 and information other than time, such as the bicycle's running speed and mileage, which is equipped with a digital display that has a station side display section and a minutes and seconds side display section, and The time display part and the minute/second side display part of the digital display are used simultaneously to display the time, while the time display part and the minute/second side display part of the digital display are used independently to display the information. Bicycle speedometer.