JPS6039645Y2 - High voltage generator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a high voltage generator for igniting gas appliances, and aims to provide one that is easy to assemble, inexpensive, and has stable performance.

Conventionally, when constructing a high voltage generator using thin plates,
It is difficult to securely hold the impact mechanism section and the piezoelectric element unit, and in conventional high voltage generators housed in a box, various leaf springs are used especially for fixing the piezoelectric element unit.

For example, there were those that were bent into a U shape to improve elasticity, or those that were curved.

Even high-voltage generators using thin plates have not escaped this range.

In the present invention, the piezoelectric element unit part and the impact mechanism part are integrated in a storage case made of resin molding and combined with a thin plate, and a pressing coil spring is installed in the step between the protrusion part and the outer peripheral part of the storage case. One end of the coil spring and the other end of the coil spring were fixed to the circular end of the thin plate through hole.

Conventionally, a storage case made of resin molding was used in the same way as this.
Even in the case where the thin plate is integrated, dowels are provided on the thin plate and the fitting protrusions of the storage case are press-fitted, or the fitting protrusions are plastically deformed into a constricted state, and the bottom metal of this part is It seemed that the adverse effects on the characteristics depending on the condition were significant.

The present invention eliminates this negative effect on characteristics and makes it possible to improve assembly and cost.

An embodiment of the present invention will be described below with reference to the drawings.

From one end of the resin-molded storage case 1, a pad 2,
The spacer 3 and the piezoelectric element 4 are inserted, and the high voltage extraction terminal 5 is inserted from the outer surface of the storage case 1, that is, the high voltage extraction port 1a.

After that, the piezoelectric element 4, spacer 3, and backing plate 6 are inserted again to insulate their peripheral edges, but the backing plate 2,
Conductivity is established from the end surface of the backing plate 6.

Next, from the other end of the storage case 1, an impacting body 7 is inscribed in the impacting body 7 so as to come into contact with the stopper 2, and one end is inscribed in the impacting body 7.
An impact coil spring 8 is arranged so as to apply pressure.

Further, the outer periphery of one end and the other end of the storage case 1 has a fitting protrusion 1b having a groove 1c in the center.

A window hole 1d is provided on the outer periphery of the storage case 1, and the window hole 1d
Through this, the impact body 7 and the rotating cam (not shown) can be engaged and separated.

When combining the storage case 1 and the thin plate 9, a through hole 9a made in the thin plate 9 and notches 9b, 9 provided in a part of the through hole 9a are used.
The structure is such that the end face of the through hole 9a and the groove 1C of the fitting protrusion 1b of the storage case 1 are fitted and held through the hole 9c.

When mating, one end of the pressing coil spring 10 is inserted into the step 1e formed between the outer peripheral surface of the storage case 1 and the mating protrusion 1b, and the mating notch 9C is inserted into the other mating notch. 9b, and the pressing coil spring 10 and impact coil spring 8 are inserted into the through hole 9a.
While abutting and compressing the other end surface 9e, the fitting protrusion 1b passes through the fitting notches 9b and 9C and is assembled so that it abuts the one end surface 9d of the through hole 9a and the backing plate 6 is pressurized.

When the end surface of the through hole 9a and the recess 1R1c of the fitting protrusion 1b are completely fitted, the storage case 1 is constantly pressed in the direction of the one end surface 9d of the through hole 9a by the pressing coil spring 10.

The device of the present invention is constructed as described above.
Even if subjected to repeated shocks during durability tests, the fit between the thin plate and the storage case does not change, and the pressure is always stably applied in one direction, resulting in cracking of the piezoelectric element and significant deterioration of the output voltage. can be prevented.

Furthermore, compared to fixing and holding by pressure fitting, tightening, etc., there is no need for strict management of component dimensions and jigs and tools.

And in terms of price, the parts cost is the cheapest spring,
Performance is also stable.

Furthermore, it is easy to assemble and can be assembled easily, reducing the number of man-hours.

Furthermore, it is also possible to sell only the storage case part, which is a part of the high voltage generator, as a piezoelectric element unit, which eliminates the need for specific assembly techniques, and is highly effective when put into practical use.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the high voltage generator according to the present invention, with only a portion seen in half sectional view, Fig. 2 is a front view of the same, Fig. 3 is a top view of the same, and Fig. 4 is FIG. 3 is an enlarged perspective view of a fitting protrusion of the device. 1... Storage case, 1a... High voltage outlet, 1b... Fitting protrusion, 1c...
...Concave groove, 1e...Step, 2...Batch, 3...Spacer, 4...Piezoelectric element, 5... High voltage extraction terminal, 6...
・Backing plate, 7...Impact body, 8...Impact coil spring, 9...Groove plate, 9a...
...Through hole, 9b...Mating notch, 9c...
...Mating notch, 9d...One end surface of the through hole, 9e
......Other end surface of the through hole, 10......Coil spring for pressing.

Claims (1)

[Scope of utility model registration request] Insert the metal plate, spacer, piezoelectric element, and high voltage extraction terminal from the outer surface of the resin-molded storage case, and insert the piezoelectric element, spacer, and plate for insulation, and insert the corresponding metal plate and the end face of the plate. With a structure that makes it more conductive,
An impact body is arranged so as to come into contact with the pad from the other end of the storage case, and an impact coil spring is arranged to press the impact body, and a concave groove is formed in the center of the outer periphery of one end and the other end of the storage case. In addition to providing a mating protrusion to hold the housing case, a window hole is provided on the outer periphery of the storage case to enable engagement and separation of the impact body and the rotation cam, and a through hole and a mating notch are provided in the thin plate for the mating protrusion. to fit into the end surface of the through hole to fix the storage case to the thin plate, and provide a step between the fitting protrusion at the other end of the storage case and the outer peripheral surface;
A high voltage generator characterized in that a pressing coil spring is inserted into the gap between the step and the inner end of the thin plate through hole.