JPS621570Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high voltage generator that generates high voltage by applying an impact force to a piezoelectric element.

A high voltage generator using this type of piezoelectric element is
Widely used in gas lighters and other ignition devices.

FIG. 1 shows a conventional high voltage generator. In this figure, an outer case 1 is integrally formed with a partition portion 5 that separates a piezoelectric element storage portion 2 and an inner case storage portion 3 and has a hole through which a pad 4 protrudes. The piezoelectric element housing part 2 houses a pad 4 having a flange and a piezoelectric element 6, and a receiving metal 7 is screwed into an opening at one end of the piezoelectric element housing part 2. Further, a high voltage lead wire 8 is bonded to the outer case 1, and a stepped cam window 9 is formed on the side surface of the inner case storage portion 3 of the outer case 1. On the other hand, a cam window 11 is formed in an inner case 10 that is slidably provided inside the inner case storage section 3, and a pin 12 that engages with this cam window 11 and the stepped cam window 9 is formed.
An impactor 13 and an impact spring 14 are housed inside the inner case 10. A return spring 15 is provided in the inner case housing portion of the outer case 1, and this urges the inner case 10 in the projecting direction (rightward direction).

In the above configuration, in the normal state, the inner case 10 protrudes as shown in FIG.
The pin 12 engages with the lower end of the stepped cam window 9. In this state, when the inner case 10 is pressed in the direction of arrow X against the elastic force of the impact spring 14, the elastic force is accumulated in the impact spring 14. Inner case 10
When pressed further, the pin 12 is disengaged from the stepped portion of the stepped cam window 9 due to the inclined side of the cam window 11.
The impactor 13 rapidly moves to the left by the force of the impact spring 14 and hits the pad 4, generating a high voltage between the high voltage lead wire 8 and the pad 7.

By the way, in the case of the above structure, the piezoelectric element 6 can be directly stored in the piezoelectric element storage part 2 of the outer case 1, and the number of parts can be reduced. However, since the receiver 7 is screwed to the outer case 1, Not only does the receiving metal 7 require thread cutting, but also the assembly work becomes troublesome. In addition, the connection of the piezoelectric element ground side electrode to the receiving plate 7 becomes a problem, and for this reason, the return spring 15
One end of the holder is extended to make contact with the receiver 7, or a separate grounding rod is provided, which tends to impair work efficiency.

In view of the above points, the present invention is designed to reduce the number of parts and improve the ease of assembly by making it possible to attach a receiver with a grounding piece to the opening at one end of the piezoelectric element storage part of the outer case. The aim is to provide equipment.

Embodiments of the high voltage generator according to the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, the outer case 1A is
A partition section 5A that separates the piezoelectric element storage section 2A from the inner case storage section 3A and has a hole through which the pad 4A protrudes.
are integrally formed. A communication portion 21 that reaches the inner case storage portion 3A from the piezoelectric element storage portion 2A is formed in the partition portion 5A. The piezoelectric element housing portion 2A is provided with a pad 4 having a flange.
A and a piezoelectric element 6A are housed in the opening at one end of the piezoelectric element housing 2A, and there is a receiving plate 7 for closing the opening at one end of the piezoelectric element housing 2A.
A is fitted. The piezoelectric element abutting surface of the pad 4A is curved to produce elasticity. here,
The receiver 7A has a prismatic outer shape as shown in FIGS. 4 and 5, has a pair of grounding pieces 20 extending along opposite sides, and has a locking protrusion on the remaining opposite sides. 23, respectively. A round recess 22 into which the piezoelectric element 6A is inserted is formed on the end face of the receiver on the side where the grounding piece 20 is provided. Then, the receiver 7A is inserted into the opening at one end of the outer case 1A so that the grounding piece 20 penetrates the communication part 21 formed in the partition part 5A of the outer case 1A and comes into contact with the return spring 15A in the inner case storage part 3A. It is inserted and fixed by the locking protrusion 23 engaging with the locking hole 24 of the outer case 1A. In addition,
A high voltage lead terminal 8A is attached to the outer case 1A, and a stepped cam window 9A is formed on the side surface of the inner case storage section 3A of the outer case 1. Also, an inner case 10A, a cam window 11A, an impactor 13A having a pin 12A, an impact spring 14A, and a return spring 15A.
The structure for providing the shock absorber 13A and the functions of the impactor 13A and the like are substantially the same as in the conventional case shown in FIG.

According to the above embodiment, the following effects can be achieved.

(1) Since the grounding piece 20 is integrally provided on the receiving plate 7A, it is easy to take out the grounding side electrode of the piezoelectric element, and compared to using a separate grounding rod, the number of parts can be reduced, which is also advantageous for assembly. be.

(2) Since the locking protrusion 23 is formed on the receiver 7A and is fixed by fitting into the locking hole 24 of the outer case 1A, there is no need for thread cutting of the outer case 1A and the receiver 7A. Manufacturing is facilitated, and the work of attaching the receiving plate 7A is also simplified.

In addition, the structure of the cam window of the outer case and inner case,
The structure of incorporating the impactor into the inner case can be changed as appropriate.

As explained above, according to the present invention, a receiver having a grounding piece can be attached to the opening at one end of the piezoelectric element storage part of the outer case, thereby reducing the number of parts and improving assembly workability. A voltage generator can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a conventional high voltage generator, FIG. 2 is a front sectional view showing an embodiment of the high voltage generator according to the present invention, FIG. 3 is a plan sectional view, and FIG. FIG. 5 is a front cross-sectional view showing the receiving plate used in the example, and FIG. 5 is a side cross-sectional view of the same. 1, 1A...Outer case, 2, 2A...Piezoelectric element storage section, 3, 3A...Inner case storage section, 4, 4A
...Base, 5,5A...Divider, 6,6A...
Winning money, 7,7A...Receiving money, 10,10A...
Inner case, 13, 13A...Impactor, 14, 14
A...Impact spring, 15, 15A...Return spring, 2
0... Grounding piece, 21... Communication portion, 22... Round recess, 23... Locking projection, 24... Locking hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The piezoelectric element is placed in an outer case made of an insulating resin, which is integrally formed with a partition portion having a hole from which the piezoelectric element housing portion and the inner case housing portion are protruded. A communication part reaching from the element storage part side to the inner case storage part is provided, and a pad having a flange and a piezoelectric element are sequentially stored from an opening at one end of the piezoelectric element storage part, and a receiving part provided with a grounding piece is connected to the inner case storage part. A high voltage generator comprising: a grounding piece inserted into the communication portion to close an opening at one end of the piezoelectric element housing portion; and a grounding piece being brought into contact with a return spring housed in the inner case housing. (2) The utility model according to claim 1, wherein the receiver has a locking protrusion, and the locking protrusion engages with a locking hole formed in the outer case. High voltage generator.