JPH01233782A - High voltage generator - Google Patents

Abstract

PURPOSE:To eliminate a pin spring and facilitate reduction of the number of components by a method wherein an elastic latching member which is latched with an impactor is provided in an operation case and the latching member is returned to its original state by its own elasticity. CONSTITUTION:A wide V-shape latching member 24 which is made of elastomer and has a latching protrusion latched with the latching step 18a of an impactor 18 at its center is provided in a holding recess 23. When an operation case 22 is pushed, the impactor 18 is pushed downward by the latching with the latching piece 24 held in the recess 23 of the case 22 and the impact force produced by an impact spring 19 is accumulated. When the case 22 is pushed down further, the latching member 24 is deformed by the cam 21 at the bottom end of a slit 20 formed in an outer case 15 to be released from the latching with the impactor 18. Therefore, the impactor gives an impact to a piezoelectric device 12 through a strap 13 by the impact force accumulated in the spring 19. A high voltage is generated by the device 12. With this constitution, a pin spring can be eliminated and the number of components can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high voltage generator used for gas ignition and the like.

2. Description of the Related Art Recently, there has been a demand for high voltage generators that shorten the overall length including the operating stroke. Structures are being proposed. In FIG. 2, 1 is a piezoelectric element, 2 is a metal plate, 3 is a metal receiver, and 4 is the piezoelectric element 1.
The pad 2 and the receiver are an outer case with a built-in metal 3, 5 is an adhesive for insulating the piezoelectric element 1 and fixing it inside the outer case 4, 6 is an impactor that impacts the piezoelectric element 1, and 7 is this Shocker 6
8 is an engagement pin that engages with the impactor 6 and operates perpendicularly to the operating axis by a cam 4& formed on the outer case 4; 9 is an engagement pin 8 that applies an impact force; A pin spring 10 houses the engagement pin 8 and the pin spring 9 and is slidably incorporated into the outer case 4. A pin spring 11 is used to return the operation case 10 to its original state. This is a return spring.

The operation of the high voltage generator configured as described above will be described below. First, when the operation case 1o built into the outer case 4 is pressed, the impactor 6 is moved to the operation case 1o.
Since the engagement pin 8 incorporated in the impactor 6 is engaged, the impactor 6 accumulates the impact force by the impact spring 7, and when the operation case 10 is further pressed, the engagement pin 8 that is engaged with the impactor 6 8 is.

The engagement with the impactor 6 is released by the cam 4a formed on the outer case 4, so that the impactor 6 impacts the piezoelectric element 1 by the impact force accumulated by the impact spring 7, and generates piezoelectricity. Element 1
High voltage is generated. Then, when the pressing force is released, the operation case 10 returns to its original state by the return spring 11.
Accordingly, the engagement pin 8 also returned to its original state.

Problems to be Solved by the Invention In such a conventional high voltage generator, a bin spring 9 is used to return the engagement bin 9 that transmits the motion to the impactor 6 to its original state.
Since this method requires

The present invention is intended to solve these problems, and aims to reduce the number of parts, reduce costs, and improve workability.

Means for Solving the Problem In order to solve this problem, the present invention has a structure in which an engaging piece having elasticity that engages with the impactor is provided inside the operation case.

Function: With this configuration, the engaging piece returns to its original state by its own elastic force, eliminating the need for a bolt spring, reducing the number of parts, and simplifying the installation process. It becomes possible to improve workability.

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

FIG. 1 is a sectional view of a high voltage generator according to an embodiment of the present invention.

In FIG. 1, 12 is a piezoelectric element, 13 is a metal plate, and 14 is a piezoelectric element.
The brackets are made of gold, and are incorporated into the outer case 15 so as to sandwich the piezoelectric element 12, and are coated with adhesive 1 to insulate and fix the piezoelectric element 12 to the outer case 16.
6 has been applied.

A cavity 17 from which the tip of the pad 13 protrudes is provided on the side of the outer case 15 into which the pad 13 is installed, and an impactor 18 having a retaining step 18a at the tip is disposed in the cavity 17. At the same time, an impact spring 19 that applies an impact force to the impactor 18 is housed. In addition, outer case 15
A slit 20 communicating with the cavity 17 is formed on the side surface of the slit 20, and a cam portion 21 is formed at the lower end of the slit 20.

An operation case 22 that slides along the outer case 15 is arranged on the side of the outer case 16 on which the slit 20 is formed, and a holding recess 23 is provided on the surface of the operation case 22 that corresponds to the slit 20. It is being This holding recess 23 is made of an elastic body, and has an impactor 18 in the center part.
An engagement piece 24 having an engagement protrusion 24L that engages with the engagement step 18& is incorporated. Further, a return spring 26 is arranged below the operation case 22 to always urge the operation case 22 upward.

The operation of the high voltage generator of this embodiment configured as described above will be described below. first.

An operation case 22 slidably attached to the outer case 16
When pressed, the impactor 18 is pressed downward by engagement with the engagement piece 24 held in the holding recess 23 of the operation case 22, accumulates the impact force by the impact spring 19, and when the operation case 22 is further pressed, The engaging piece 24 that is engaged with the impactor 18 is deformed by the cam portion 21 at the lower end of the sleeve 20 formed on the outer case 16, and is released from engagement with the impactor 18, so that the impactor 18 impacts the piezoelectric element 12 via the pad 13 by the impact force accumulated in the impact spring 19, and a high voltage is generated from the piezoelectric element 12. Then, when the pressing force is released, the operating case 22 is returned to its original state by the return spring 25, and the engaging piece 24 is also moved away from the outer case 15.
The engagement protrusion 24 is released from the engagement with the cam portion 21, and due to the elastic force of the engagement piece 24 itself, the engagement protrusion 24 is engaged with the engagement stepped portion 1a& of the impactor 18.
& returns to the original state of engagement.

Effects of the Invention As described above, according to the present invention, by providing an elastic engagement piece within the operation case, the number of parts can be reduced and workability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a high voltage generator according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a recently proposed high voltage generator. 12... piezoelectric element, 13... padding,
14...Base is gold, 16...Outer case,
18...Impact element, 19...Impact spring%
2o...slit, 21...cam part,
22... Operation case, 24... Engagement piece, 26... Return spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A piezoelectric element, an impactor, and an impact spring are arranged on the same axis, and an elastic engagement piece having one end engaged with the impactor is housed inside in parallel with the piezoelectric element, impactor, and impact spring. A high-voltage generator comprising an operating case and a return spring provided on the operating case.