CN2190582Y

CN2190582Y - Indicating system of motorcycle speed gear

Info

Publication number: CN2190582Y
Application number: CN 94227128
Authority: CN
Inventors: 杨宏强
Original assignee: CHENGFEIRENWU ELECTRONIC FACTORY QINGYANG DISTRICT CHENGDU CITY
Current assignee: CHENGFEIRENWU ELECTRONIC FACTORY QINGYANG DISTRICT CHENGDU CITY
Priority date: 1994-01-31
Filing date: 1994-01-31
Publication date: 1995-03-01
Anticipated expiration: 2004-01-31

Abstract

The utility model relates to an indicating system of motorcycle speed gear, which belongs to the indication of the vehicle gear. The system solves the technical problem that the indicating single wire of the motorcycle gear is output in series. The utility model is characterized in that indicating system adopts the single wire output in series, utilizes the lead wire of the neutral position of the engine as a control end to connect a gear sensor 2 and a gear controller 3 and is communicated with an indicator 4 through the output wire of a voltage comparator IC arranged in the gear controller 3. The rotary contact signal of a gear triggers 1 sends out drive signals to light an indicating light corresponding to the gear after passing the comparison and the identification of the gear controller 3.

Description

Indicating system of motorcycle speed gear

The utility model is about the automobile gear level read out instrument, especially for the gear display device of motor bike, this device comprises that one is contained in the gear shift binary pair 1 on the shifter bar axle head and is shaped on the annular sensor 2 of some electric contacts and gear controller 3 that is electrically connected and telltale 4.

At present, mostly not designing in the prior art has gearshift display device, and a lot of motor bike design-calculated gearshift display devices mostly are a blank false table, are mainly used in decoration.Design and be equipped with the motor bike of gearshift display device on a small quantity, the gearshift display device that is equipped with on for example at present commercially available wild wolf 125 types, the QS100 of the light cavalry type motor bike, its structure as shown in Figure 1, its telltale mainly is made up of shifter bar 1, sensor 2 and gear indicator lamp 3.Its weak point is that each gear indicator lamp must be corresponding one by one with the contact of sensor, multi-thread connection.The gearshift display device of this structure requires driving engine to have enough spaces to allow stranded conductor draw from engine interior, and most motor cycle engine is difficult to realize this requirement.The gearshift display device of this structure is the former motor cycle engine that does not have design that gearshift display device is arranged of incompatibility not only, nor adapts to the motor cycle engine that only design has a neutral gear pig-tail wire.

The purpose of this utility model is to avoid weak point of the prior art, and a kind of many gear display devices of single serial transmission are provided.

Technical solution of the present utility model is: only connect gear position sensor 2 and gear controller 3 with a driving engine pig-tail wire or a neutral position pig-tail wire utilizing motor cycle engine to draw as control end, and the output line by gear controller 3 connects gearshift display device 4, and an input grounding wire joint wherein is in bodyshell.

Technical solution of the present utility model can further be illustrated with following accompanying drawing:

Fig. 1 is a theory structure conspectus of the present utility model.

Fig. 3 is the circuit diagram of the utility model gear position sensor and gear controller.

Fig. 3 frame of broken lines B is the gear position sensor circuit, and frame of broken lines A is the gear controller circuit.

Fig. 2, Fig. 3 are the optimum implementation of the designed gear display device of the utility model

This device includes a gear binary pair that links to each other with the motor cycle engine shifter bar 1 and has annular groove, and circumference uniform distribution is equipped with electric touch pad, and resistance is housed between electric touch pad, by the gear position sensor 2 of insulating material making.

This device also includes and is locked in the housing, and by stabilivolt BG1, resistance R 1～R5 and level indicator are the gear controller 3 that constitutes of control apparatus that comparator IC forms and the gearshift display device 4 that is connected thereof.

Among Fig. 3 frame of broken lines A the gear control circuit can be the stabilivolt BG1 contact that is connected resistance R 1 and R2 with ground between and be communicated with power supply, the contact of resistance R 2 and R3 links to each other with the voltage comparator ic positive input.IC is the CMOS large-scale integration circuit, and its centre pin is connected in the contact of bleeder circuit, and this contact is the entrance point of comparative voltage, in order to provide comparative voltage to voltage comparator ic.Voltage comparator ic can be level meter indication integrated package, for example the special chip LM3914 and the substitute products thereof of National Semiconductor's production.Voltage comparator ic is according to common mode, power connection voltage vcc and system earth.The output termination gearshift display device of voltage comparator.Resistance R 4, the R5 branch road provides reference voltage for voltage comparator ic.

Fig. 3 frame of broken lines B is the gear position sensor circuit.This circuit can be the bleeder circuit of resistance R 2 same R3, R6, R7, R8, R9 composition.Resistance string is connected between the electric contact point, and when some contacts contacted with the connected to chassis electrical contact in the electric contact 0～4 that is made of electric contact point, A named a person for a particular job and obtains different comparative voltage signals.When 0 communicated with the ground connection electrical contact, the C0 luminotron was lighted, and 1 when communicating with the ground connection electrical contact, the C1 luminotron is lighted ...Sensor 2 is pressed the method for Fig. 1 prior art and is made, and institute's difference is to be shaped on annular groove between electric touch pad, welds in the resistance embedded groove and with electric touch pad.During installation, the left crankcase lid is opened, the rubber plug other motor bike neutral gear binding post takes off, and gear shift binary pair 1 usefulness bottle opener is screwed in, and tightens.Gear position sensor is pressed into after to good zero-bit, connects good output line.Gear controller is installed on the vehicle frame, and the connector on top connector and gear position sensor 2 and the gearshift display device 4 is inserted firmly.When the engine speed changer gear shift, and then rotation of gear shift binary pair 1, and with gear contact head 0～4 in some the contact, making its current potential is zero, just have on the output line of gear position sensor 2 like this one with the cooresponding signal output of gear to gear controller 3, after gear controller compared, differentiates, output drive signal was lighted and the cooresponding indicator lamp of gear.

An exemplary embodiments of the present utility model, be that its voltage comparator ic is the LM3914 chip, wherein resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9 are respectively 510 Ω, 1.0K Ω, 2.7K Ω, 2.7K Ω, 3.3K Ω, 6.8K Ω, 17.4K under typical applicable cases.

The utility model compared with prior art has the following advantages:

1, adopts single-wire serial transmission, changed traditional connection of the multi-thread connection of gearshift display device, the range of application face width.

2, reduced the blindness in the driving, made driving safer, reliable.

Claims

1, a kind of automobile gear level read out instrument, motor bike gear display device particularly, it comprises a gear shift binary pair 1, gear position sensor 2 and gear controller 3 that is electrically connected and telltale 4 by the insulating material making, gear controller 3 is electrically connected between gear shift binary pair 2 and the telltale 4, it is characterized in that gear position sensor 2 and the former motor cycle engine neutral gear of gear controller 3 usefulness pig-tail wire are connected, its grounding jumper is connected in bodyshell, and the voltage comparator ic output line in its gear controller links to each other with telltale 4.

2, by the described gear display device of claim 1, it is characterized in that said gear controller 3 is to be made of the control circuit that is locked in the housing, wherein resistance R 1, R2 and R3 are in series, and be connected between power supply and the bleeder circuit B ground, resistance R 2 links to each other with stabilivolt BG1 and ground connection with the contact of R1, wherein the contact of resistance R 2 and R1 links to each other with the positive input of voltage comparator ic, resistance R 1 and BG1 form mu balanced circuit provides VREF (Voltage Reference) by R2 and R1 contact to voltage comparator ic, R4 and R5 are in series and ground connection provides reference voltage to voltage comparator ic, voltage comparator ic is according to common mode, power connection voltage VCC and system earth, the output termination gearshift display device of voltage comparator ic.

3, by claim 1 or 2 described gear display devices, it is characterized in that said gear position sensor 2 is formed bleeder circuit by one group of series resistance and the ground connection electric touch pad constitutes, its resistance is embedded in respectively in the circular groove of being made by insulating material, and be welded between the adjacent electric touch pad, the electrical contact that is contained in gear binary pair 1 is connected with ground.

4, by the described gear display device of claim 3, it is characterized in that the resistance of resistance R 3, R6, R7, R8, R9 is when the typical case: 2.7K Ω, 2.7K Ω, 3.3K Ω, 6.8K Ω, 17.4K.

5, by claim 1 or 2 described gear display devices, it is characterized in that said voltage comparator is the LM3914 chip.