JPH0120534Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a high voltage generator used as an ignition device for a pocket lighter, and is particularly intended to facilitate the holding and fixing of a piezoelectric element.

A conventional high voltage generator was constructed as shown in FIG. That is, a threaded part 3 is provided on the outer housing 2 in which the piezoelectric element 1 is insert-molded, and a receiving screw 4 is screwed into this threaded part 3 to hold and fix the piezoelectric element 1 by applying a constant pressure, and the impactor is held and fixed. The inner storage body 5 to be stored is slidably incorporated into the outer storage body 2, and by sliding the inner storage body 5, an impact is applied to the piezoelectric element 1 with an impactor to obtain a high voltage on the high voltage lead wire 6. It is composed of

In general, in this type of structure in which the impact mechanism section (inner housing body) is directly incorporated into the housing body that houses the piezoelectric element, the impact force is applied directly to the housing body and the piezoelectric element receiving part, so the receiving part It is necessary to firmly hold and fix the storage body, and conventionally a screw fixing method has been used. However, in the screw type configuration, it is necessary to provide a threaded portion 3 on the outer housing body 2, which makes processing the outer housing body 2 difficult, and the pressure applied to the piezoelectric element 1 changes depending on the tightening condition of the receiving screw 4. However, it affects the output characteristics of the high voltage generator, and since the receiving screw 4 is manufactured by cutting, it is disadvantageous in terms of cost, and the assembly process takes time. It had some drawbacks that were said to be difficult.

The present invention eliminates the above-mentioned drawbacks of the prior art.

Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.

Reference numeral 7 denotes an outer storage body made of synthetic resin. A piezoelectric element storage hole 8 in the longitudinal direction is formed in the center of this outer storage body 7, and a piezoelectric element 9 is placed in the piezoelectric element storage hole 8. has been inserted. Further, a through hole 10 is provided at one end of the outer storage body 7 and is perpendicular to the piezoelectric element storage hole 8, and a metal plate 11 is inserted into the through hole 10 to press and support one end of the piezoelectric element 9. . The insertion end side of the metal plate 11 is provided with a tapered surface, so that when the metal plate 11 is inserted into the through hole 10, it does not engage with the end surface of the piezoelectric element 9, and can be inserted smoothly. configured to apply pressure.

Furthermore, an inner housing 12 having an impactor that applies an impact to the piezoelectric element 9 is slidably incorporated into the outer housing 7, and a high voltage lead wire 13 for taking out the high voltage generated in the piezoelectric element 9 is pulled out. There is.

As described above, the high voltage generator of the present invention can keep the pressure applied to the piezoelectric element constant by simply controlling the dimensions of the outer housing, the piezoelectric element, and the metal plate, and the output voltage can also be stabilized. The rear wall thickness of the outer storage body that receives the metal plate can be selected as desired, so there is no need to worry about the durability life due to impact force.Furthermore, the outer storage body is easy to process, and the metal plate can be pressed. It can be manufactured inexpensively by processing such as
Moreover, it is easy to assemble and can be automated.
It has the advantage of being significantly advantageous in terms of cost, and is of great practical value.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing a conventional high voltage generator, Fig. 2 is a partially cutaway front view showing an embodiment of the high voltage generator of the present invention, and Fig. 3 is a partially cutaway front view of a conventional high voltage generator. FIG. 3 is a perspective view of main parts. 7...Outer storage body, 8...Piezoelectric element storage hole, 9...
... piezoelectric element, 10 ... through hole, 11 ... metal plate,
12...Inner storage body, 13...High voltage lead wire.

Claims (1)

[Scope of utility model registration request] An outer storage body provided with a storage hole for storing a piezoelectric element is provided with a through hole that is perpendicular to the piezoelectric element storage hole and into which a metal plate is inserted to press and hold the end face of the piezoelectric element stored in the storage hole. A high voltage generator comprising a metal plate inserted into a hole and an inner storage body having an impactor incorporated into the outer storage body.