DE1457574B1 - Hand-operated piezoelectric igniter, in particular for lighters - Google Patents

Description

1 2

The invention relates to a hand-operated one of the contacts on the printing device and the

Piezoelectric igniter in which there is another contact in the path of the printing device

Spark gap arranged on a piezoelectric transducer in such a way that the contact set simultaneously

connected and this by means of a Druckvorrich- as a limit stop for the relief movement device is resilient, which is used by hand in a 5 of the printing device. So you can with the

Working position and by means of a return device contact set simultaneously the mechanical and electrical

can be moved to a rest position, in particular to terminate the ignition device for Irish effectiveness.

Lighters. It goes without saying that the contact set im

Piezoelectric converters produce one of their ignition moments with a larger contact distance load proportional voltage. This process must have as the electrodes of the spark gap,

is considered to be completely reversible. If otherwise the sparkover between the

so, for example, would be done by means of a translated manual. This requirement can be

force, the transducer is so loaded that it is particularly easy to meet when the printing device

a voltage of several kV is generated, the device has an operating lever on which the sufficient for a flashover at the spark gap, 15 contact set attached in the area of the free end of the lever.

so when relieving there is again such a system. The free end of the lever goes through one

Rollover. It was therefore assumed that the relatively long way, so that at the moment of ignition for

relieved converter that originally provided a sufficiently large contact distance.

sets existing zero potential. But this is in the The contact set can from the electrodes of the

Practice not the case. Rather, there is almost always 20 ignition spark gaps themselves, with one

the risk that the operator, for example the electrode, is arranged to be movable. In the case of a pressure

the user of a lighter, in the idle state of the device with operating lever, can move the

Ignition device receives an electric shock. Electrode be attached to the operating lever. Here-

Try to counteract this fact by avoiding additional moving parts

that one needs the printing device completely from the 25th.

Converter took off in order to relieve him even more, it is particularly advantageous if the pressure brought forward no significant improvement. Also direction between their resting position at the end of the discharge This error is not caused by using the voltage stroke and the beginning of the pressure load Piezoelectric transducer with different types of transducers performs an idle stroke. The one with it turn off the composition. 30 related benefits are combined with the

The invention is based on the knowledge that described embodiments

the occurrence of a stress when the load is removed. The invention is illustrated below by means of two

Converter of such ignition devices inherent in the drawings illustrated embodiments

Property is not further described by amending the. It shows

Converter or the printing device switched off 35 Fig. 1 an ignition device with discharge connector

can be, but be accepted and clocked

must and therefore only through secondary measures F i g. 2 an ignition device with movable

is to be eliminated. The high voltages in the electrodes.

This is because small devices have the consequence that in the embodiment in FIG. 1 are in

in the case of very good insulation, a charge shift 40 in a U-shaped carrier 1 in an insulating body 2

cannot be avoided by leakage currents. The two piezoelectric bodies 3 and 4 housed,

by between their facing end faces during operation of the ignition device

Induced voltage drop leads to the fact that a conductive plate 5 is placed, which extends over the conductor 6

normally in the unloaded state the zero line continues up to the electrode 7 of the ignition spark gap.

Potential is not reached. 45 The other electrode 8 is on one

According to the invention, therefore, to eliminate the bracket 9, which is attached directly to the carrier 1 and there-

residual potential remaining in the rest position is connected to ground. Have a ground connection

Contact set provided, which is under the influence of the opposite end faces of the two

Return device towards the end of the relief piezoelectric body 3 and 4 over parts of the

stroke is closed while keeping the poles of the 50 pressure device.

piezoelectric transducer connects to each other. One acts on the right front side of the body 3

With the help of the contact set, the adjustable pressure screw 10, which is in an at

position still existing charges balanced carrier 1 fastened threaded body 11 screwed

and thus eliminates the disturbing potential. bar is, via a first pressure plate 12, two pairs

Although it is from British patent specification 55 of disc springs 13 and a second pressure plate 14.

712 803 and the USA.-Patent 2954506 at On the left front side of the body 4, this acts

piezoelectric ignition devices for combustion pressure piece 15 of a toggle joint via a

tion motors known, the poles of the piezoelectric pressure plate 16. The toggle joint belongs to the

Converter during the relief stroke with each other operating lever 17, which is about the axis 18 in the carrier 1

to be connected to the 60 occurring with the relief stroke is pivotable and in turn that about the axis 19

to suppress the spark, since this spark carries non-pivoting pressure piece 15. If the lever 17

would fit into the firing order. This problem plays with the force P , the two piezo-

in the case of a hand-operated piezoelectric ignition pre-electrical body 3 and 4 pressed together; the

Direction does not matter, however, as it leads to the exact resulting tension to an or

Time of spark generation does not arrive and 65 multiple flashovers at the spark gap 7, 8.

a second spark during the relief stroke. If the force P is removed, the lever 17 and the

would normally not interfere with the ignition function. entire printing device by means of the spring 20 in the

According to a preferred embodiment, the original position is returned. Relax here