CN2233857Y - Motor cycle shift position digital display device - Google Patents

Abstract

The utility model relates to a motor cycle shift position display device. A rotary shift position switch, an isolation diode, a current-limiting resistor and a nixie tube respectively form a rotary shift position switch circuit, a current dividing circuit and a digital display circuit. The moving contact of the rotary shift position switch is connected with the head of the gear shift drum axle of the motor cycle and rotates meanwhile along the gear shift drum axle when the shift position changes, in order to switch on fixed contacts distributed and fixed on the corresponding shift position of the bottom shell of the motor cycle. The fixed contact of every shift switches on the digits required to display on the shift position of every cathode display corresponding to the nixie tube through the isolating diode and the current-limiting resistance. The utility model has the advantages of simple circuit, stability, reliability and low cost and can be developed into a disposable service-free device.

Description

Motor bike gear numeric display unit

The utility model belongs to a kind of numeric display unit that is used to show motor bike gear of living in.

The most vehicles of existing motor bike are advanced shelves for circulation, and are not equipped with the gear demonstration.Minority import vehicle is furnished with gear display device, with light transillumination ordered series of numbers, shows that occupy-place is big, and commonality is poor, is not easy to install.A grade type motor bike is advanced in the circulation that does not have gear to show, exists certain safety hazard.For begining to learn the motorist, safety hazard is apparent especially.As being in 4 grades of top-gear positions, do not show that owing to have forget class of living in sometimes, on the road junction particularly many people, that car is many, the chance that motorist's spirit high concentration is forgotten is more when car.This moment as need gear shift, be easy to step on and be neutral gear.At this moment find that the neutral gear lamp is bright, be easy to advance again promptly one grade of shelves in acting hurriedly in a messy situation, so not only break gear easily, also might cause and overturn or fault such as flame-out.

The utility model is intended to for the vast motor bike user of society provides a kind of motor bike gear numeric display unit, and this installation cost is low, is easy to repacking or installation, and is stable and reliable for performance, thereby improves the safe performance indexes of motor bike, reduces the factor that traffic accident takes place.

The utility model is by the metal moving contact, break back contact, lead, current-limiting resistance, disconnector diode, and altogether positive charactron etc. constitutes a rotary driving switch, five electric current distributed switch circuit and digital display circuit.On the cooresponding position, each break back contact was connected accordingly when the position respectively and is shown the electric current distributed switch circuit that needs when five metal break back contacies of rotary driving switch were evenly distributed on each gear engaged.Moving contact is connected on the variable speed drum spindle nose of conversion gear.The rotation of moving contact during with the gear shift of variable speed drum axle, pressing the class order combines with each grade break back contact, promptly combine with each grade electric current distributed switch circuit of being made up of isolation diode, the corresponding negative electrode of positive charactron makes it demonstrate the numeral of corresponding each grade to make electric current need connect altogether through current-limiting resistance by each grade.Positive charactron anode connects the motorcycle battery positive pole altogether, and battery cathode is coupling on moving contact through variable speed drum by vehicle body.As adopt common cloudy charactron to need battery polar diode, charactron error-polarity connection.

The utility model component kind is few, circuit simple, the element quality requirement is low, be easy to installation and repacking, dependable performance, fault rate is low, cost is low, can produce disposable non-maintaining type element.

Accompanying drawing is a circuit diagram of the present utility model.

Embodiment of the present utility model is provided by following:

Battery GB is anodal to connect current-limiting resistance R by charactron LED anode through negative electrode b ₁One end, another termination electric current distributed switch circuit isolation diode VD ₁Anode, negative terminal power connection negative pole shows the corresponding stroke of charactron.Other negative electrode of charactron LED a, c, d, e, f connect the cloudy R of current limliting electricity ₂, R ₃, R ₄, R ₅, R ₆One end, current-limiting resistance R ₂, R ₃, R ₄, R ₅, R ₆Another termination electric current distributed switch circuit isolation diode VD ₂, VD ₃, VD ₄, VD ₅, VD ₆Anode, negative terminal are connected rotary driving switch SA break back contact 0 end, form the loop through moving contact A power connection negative pole, cooperate the charactron LED negative electrode b that just shows stroke originally, and 6 strokes are formed " 0 " gear display circuit jointly.Rotary driving switch SA break back contact 1 termination electric current distributed switch circuit isolation diode VD ₇Negative terminal, anode is by current-limiting resistance R ₃Connect charactron LED negative electrode C end, cooperate the charactron LED negative electrode b that just shows stroke originally, 2 strokes are formed " 1 " gear display circuit jointly.Rotary driving switch SA break back contact 2 termination electric current distributed switch circuit isolation diode VD ₈, VD ₉, VD ₁₀, VD ₁₁Negative terminal, anode is by current-limiting resistance R ₂, R ₄, R ₅, R ₇Connect charactron LED negative electrode a, d, e, g end, cooperate the charactron LED negative electrode b that just shows stroke originally, 5 strokes are formed " 2 " gear display circuit jointly.Rotary driving switch SA break back contact 3 termination electric current distributed switch circuit isolation diode VD ₁₂, VD ₁₃, VD ₁₄, VD ₁₅Negative terminal, anode is by current-limiting resistance R ₂, R ₃, R ₄, R ₇Connect charactron LED negative electrode a, c, d, g end, cooperate the charactron LED negative electrode b that just shows stroke originally, 5 strokes are formed " 3 " gear display circuit jointly.Rotary driving switch SA break back contact 4 termination electric current distributed switch circuit isolation diode VD ₁₆, VD ₁₇, VD ₁₈Negative terminal, anode is by current-limiting resistance R ₃, R ₆, R ₇Connect charactron LED negative electrode c, f, g end, cooperate by originally just showing the charactron LED negative electrode b of stroke, 4 strokes are formed " 4 " gear display circuit jointly.

When motor bike was in " 0 " gear, battery GB positive electrical stream was by charactron LED common cathode, corresponding negative electrode a, b, c, d, e, f and each limit leakage resistance R when being shown as " 0 " ₁, R ₂, R ₃, R ₄, R ₅, R ₆Anodal, negative pole is connected with " 0 " gear break back contact, this break back contact be contained on variable speed drum spindle nose " 0 " gear the rotary driving switch SA moving contact A on the relevant position touch close after, flow to battery GB negative pole through vehicle body and form the loop, make charactron LED demonstrate " 0 " word accordingly.When variable speed drum turns to " 1 " shelves, show the charactron LED of " 1 " word _{B, c}Two negative electrodes through current-limiting resistance again through isolation diode VD ₇Positive pole, negative pole and " 1 ", the gear break back contact is connected, and shows " 1 " word.At this moment, because the effect of isolation diode, so other show electrode no current is not by there being demonstration.When variable speed drum turned to other each grade, the corresponding isolation diode of each grade was opened and is made charactron LED respective electrode get the corresponding gear numeral of electric demonstration.Because VD ₁All participate in work at each gear, thereby negative terminal directly connects battery GB negative pole without switch S A.

Claims (2)

1. motor bike gear digital display device, it is characterized in that rotary driving switch SA moving contact A is connected on the motor bike variable speed drum spindle nose, the rotation of moving contact A during with the gear shift of variable speed drum axle, connect cooresponding locational five break back contact 0-4 when being distributed in each gear engaged respectively, each break back contact is connected gear demonstration needs respectively accordingly, by isolation diode VD ₁-VD ₁₈, the electric current distributed switch circuit that corresponding diode and resistance are formed among the current-limiting resistance R1-R7 is connected corresponding each negative electrode of positive charactron altogether again.

2. numeric display unit according to claim 1 is characterized in that rotary driving switch SA break back contact 0 termination isolation diode VD ₂, VD ₃, VD ₄, VD ₅, VD ₆Negative terminal, diode VD ₂, VD ₃, VD ₄, VD ₅, VD ₆Anode is by current-limiting resistance R ₂, R ₃, R ₄, R ₅, R ₆Connect the corresponding negative electrode a of charactron LED, c, d, e, f end, break back contact 1 terminating diode VD ₇Negative terminal, anode is by current-limiting resistance R ₃Connect charactron LED negative electrode C end, break back contact 2 terminating diode VD ₈, VD ₉, VD ₁₀, VD ₁₁Negative terminal, anode is by current-limiting resistance R ₂, R ₄, R ₅, R ₇Connect charactron LED negative electrode a, d, e, g end, break back contact 3 terminating diode VD ₁₂, VD ₁₃, VD ₁₄, VD ₁₅Negative terminal, anode is by current-limiting resistance R ₂, R ₃, R ₄, R ₇Press charactron LED negative electrode a, c, d, g end, break back contact 4 terminating diode VD ₁₆, VD ₁₇, VD ₁₈Negative terminal, anode is by current-limiting resistance R ₃, R ₆, R ₇Connect charactron LED negative electrode c, f, g end, diode VD ₁Negative terminal connects battery GB negative pole, and anode is by current-limiting resistance R ₁Connect charactron LED negative electrode b end, charactron LED anode connects battery GB positive pole, and rotary driving switch SA moving contact connects battery GB negative pole.

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