JPS5855109Y2 - Bicycle shift position display device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a bicycle shift position display device that is attached to a bicycle having a shift mechanism, and particularly relates to a device that uses a plurality of light-emitting bodies as a display section to notify the number of gears of the shift mechanism. .

In this type of bicycle, the transmission mechanism attached to the axle of the rear wheel is operated remotely by operating a transmission lever attached to the body pipe, etc., and the chain is connected to multiple transmission gears to change gears. The number of gears can be changed, but in the past, the number of gears was displayed by making the number of gears previously drawn on the gear lever housing face the movement position of the gear lever itself. However, in such a conventional example, visibility is poor and it is difficult to instantly identify the number of gears, and the number of gears cannot be identified particularly at night.

This proposal is aimed at improving these shortcomings.
To easily know the number of gears even at night by lighting up a number of light emitters corresponding to the number of gears, and to light up the light emitters corresponding to the number of gears brighter than other light emitters. The purpose is to make the number of gears instantly recognizable.

Hereinafter, the bicycle shift position display device of the present invention will be explained based on the embodiment shown in the drawings. 1 is the bicycle body, 2 is a transmission mechanism attached to the axle of the rear wheel 3 of this bicycle body 1, and this transmission mechanism 2 is 5 speed gears 4A, 4B, 4C, 4D
, 4E, and a guide gear 6 for hooking the chain 5 to any one of these transmission gears 4A, . . . , 4E.

Reference numeral 7 denotes a shift operation member attached to the body pipe 1 of the bicycle main body 1, and 8 is a wire cable connecting the shift operation member 7 and the shift mechanism 2. The shift operation of the shift lever 9 of the shift operation member 7 is performed by this The signal is transmitted to the guide gear 6 of the transmission mechanism 2 via the wire cable 8, and the chain 5 is engaged.

Reference numeral 10 denotes a shift position display device for a bicycle according to the present invention attached to the operating member 7, 11 a switch section, 12 a display section, 1
3 is a delay actuation section.

In the switch section 11, 14 is the gear shift lever 9.
15 is a contact plate, 1
6A, 16B, 16C, 16D, and 16E are the first and second contacts of the contact plate 15 that slide into contact with the movable contact 14 in response to the shift operation of the shift lever 9 from 1st to 5th gear.
Third. 4th. The fifth fixed contact 17 is a first contact that can be inserted into the gaps between the fifth fixed contacts 16A to 16E of the contact plate 15. Second. Third. Fourth comb tooth contact piece 18A.

A delay contact having 18 B, 18 C, and 18 D operates the speed change mechanism 2 via the wire cable 8 by the speed change operation of the speed change lever 9, and the movable contact 14
The corresponding fixed contact is switched by passing through the comb-teeth contact piece of the delay contact.

(For example, when the shift lever 9 is operated to shift from the third gear to the fourth gear, the movable contact 14 contacts the third comb-tooth contact piece 18C of the delay contact 17 from the third fixed contact 16C, and then
It comes into contact with the fourth contact 16D.

) The display section 12 has first to fifth light emitting diodes 19A, 19B, 19C whose anodes are connected to the first to fifth fixed contacts 16A to 16E of the switch section 11, respectively, and whose cathodes are connected to each other. , 19D, and 19E, and the first. Second. Third. It consists of fourth forward voltage drop diodes 2OA, 20B, 20C, and 20D.

(For example, the anode side of the first light emitting diode 19A is connected to the cathode side of the first forward voltage drop diode 20A, and the anode side is connected to the anode side of the second light emitting diode 19B, and the second light emitting diode 19
The cathode side of the second forward voltage drop diode 20B is connected to the anode side of the LED B, and the anode side of the second forward voltage drop diode 20B is connected to the anode side of the third light emitting diode 19C.

) The delay activation section 13 is a circuit consisting of a charging/discharging capacitor 21 connected to the delay contact 17, a discharging resistor 22, and a control transistor 23. By contacting said capacitor 2
1, and when the movable contact 14 is separated from the delay contact 17, the capacitor 21 is discharged via the resistor 22. The control transistor 23 is turned on during this charging and discharging time, and the battery 24 is discharged. Power is supplied to the display section 12, and the display section 12 is operated only for a certain period of time.

When the speed change lever 9 is operated to change the speed, the battery 24 power is charged to the capacitor 21 of the delay actuating section 13 from the movable contact 14 via the delay contact 17, and then the movable contact 14 charges the capacitor 21 of the delay action section 13 to correspond to the number of gears. Power is supplied to the light-emitting diodes corresponding to the number of gears through the fixed contact, and power is also supplied to the light-emitting diodes on the lower side than this number of gears via the voltage drop diode, so that the light-emitting diodes corresponding to the number of gears are lit the brightest. At the same time, the light emitting diodes on the side lower than this gear stage number also turn on in a darker manner.

(For example, if the gear shift lever 9 is in the third gear, the third light emitting diode 19C lights up the brightest, and then the second light emitting diode 19B and the first light emitting diode 19A light up in the order of dimming.

) and the control transistor 2 of the delay actuating section 13
3, the power supply to the light emitting diodes is stopped and the light emitting diodes are turned off.

Fig. 5 shows another embodiment of the present invention in which the lighting brightness of the light emitting diodes other than those corresponding to the number of gears is constant. In the same figure, 25... is for forward voltage drop. It is a diode.

The bicycle gear shift position display device of the present invention is as described above, and includes a plurality of light-emitting bodies that display the number of gears of the transmission mechanism in conjunction with the shift operation of the gear-shift lever, and each of these light-emitting bodies Since a forward voltage drop diode is installed in between, a number of light emitters corresponding to the number of gears are lit, and therefore, by looking at the number of light emitters, it is possible to accurately and easily set the number of gears, especially at night. You can know.

Furthermore, in this project, among these lit luminous bodies,
Since the light emitting body corresponding to the number of gears is lit up brighter than the other light emitters, the number of gears can be instantly known.

Furthermore, since a forward voltage drop diode is used to drop the voltage between these light emitting diodes, it is possible to obtain a bicycle shift position display device that consumes less power than a device that uses a resistor or the like.

[Brief explanation of the drawing]

Each of the drawings shows an embodiment of the bicycle shift position display device of the present invention, and FIG. 1 is an overall view of the device incorporated into a bicycle body, and FIG.
The figure is a top view of the gear shift operation member, Figure 3 is a basic relationship diagram, and Figure 4 is a diagram of the basic relationship.
The figure is a circuit diagram, and FIG. 5 is a circuit diagram of another embodiment. 9... Speed change lever, 2... Speed change mechanism,
19A, 19B. 19 C, 19 D, 19 E... 1st. Second.
Third. 4th. Fifth light emitting diode, 20 A, 20
B, 20 C, 20D... 1st degree, 2nd degree. Third
．． Fourth forward voltage drop diode.

Claims (1)

[Scope of utility model registration request] A bicycle transmission mechanism is actuated by a speed change operation of a speed change lever, and includes a plurality of light emitting bodies that display the number of gears of the speed change mechanism in conjunction with the speed change operation of the speed change lever. A bicycle gear shift position display device characterized in that forward voltage drop diodes are installed between each body.