JPS61256115A - High voltage generating device - Google Patents

Abstract

PURPOSE:To reduce the sliding area between the inner circumferential face of the inner case and a cylindrical hammer and eliminate the effect on the impact speed of a hammer of the variation of viscosity of a lubricating oil and stabilize the output voltage by providing a plurality of straight grooves or a plurality of straight projections on the outer circumferential face of a cylindrical hammer which is to give impact force to a piezoelectric element. CONSTITUTION:In the outer case 1 an impact receiver 2, piezoelectric element 3a, intermediate terminal 4, and piezoelectric element 3b are arranged with the same pole end faces abutted so that the piezoelectric elements 3a and 3b are disposed electrically parallel, then they are fixed by a receiving piece 5 and a lead wire 6 is mounted to the intermediate terminal 4. After the return spring 7 is inserted into the outer case 1, an inner case 12 is mounted which constitutes a shock mechanism with a hammer pin 8, hammer 9 which has on its outer circumferential face a plurality of line grooves 9a or line projections 9b in parallel to the direction of sliding, and hammer spring 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high voltage generator used for igniting gas in cigarette lighters, gas appliances, and the like.

2. Description of the Related Art A conventional high voltage generator has a shock absorber 2. The piezoelectric elements 3a and 3b are arranged with the same polar terminals facing each other so that they are electrically parallel, the receiver is fixed with gold 5, and the lead wire 6 is connected to the intermediate terminal 4.
After attaching the return spring 7 to the outer case 1, insert the hammer bin 81 into the cylindrical hammer 10. An inner case 12 was attached that constituted an impact mechanism based on the hammer spring 11.

Problems to be Solved by the Invention Grease-like lubricating oil or the like is applied to the impact mechanism and sliding parts of the outer and inner cases of the high voltage generator in order to smooth operation and improve wear resistance. Was. However, the viscosity of these lubricating oils is greatly affected by temperature, and at low temperatures, there is a problem in that the movement of each sliding part is greatly reduced. In particular, an increase in the viscosity of the lubricating oil applied to the sliding surfaces between the inner periphery of the inner case and the outer periphery of the cylindrical hammer, which make up the impact mechanism, greatly affects the impact speed of the hammer, lowers the impact force, and reduces the output voltage. This was a major problem because it led to a decline in the quality of the product.

Therefore, an object of the present invention is to provide a high voltage generator that can eliminate these drawbacks.

- Means for Solving the Problems For this reason, the present invention provides a plurality of line-shaped grooves or protrusions parallel to the sliding direction on the outer peripheral surface of a cylindrical hammer that applies impact force to the piezoelectric element.

Function: In this way, the contact area, that is, the sliding area between the inner circumferential surface of the inner case and the outer circumferential surface of the cylindrical hammer can be reduced compared to the conventional method, thereby reducing the resistance and friction caused by the lubricating oil on the sliding surfaces. will also decrease.

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, and FIG. 2 is a partially cutaway external perspective view of the main part, the inner case impact mechanism.

As shown in FIGS. 1 and 2, a shock absorber 2. The piezoelectric element 3a, the intermediate terminal 4, and the piezoelectric element 3b are arranged with their end faces facing each other so that the piezoelectric elements 3a and 3b are electrically parallel, and the receiver is fixed with gold 6, and the lead wire 6 is connected to the intermediate terminal. After installing the terminal 4 and inserting the return spring 7 into the outer case 1, the hammer bin 8. A cylindrical hammer 9 and a hammer spring 11 each having a plurality of line-shaped grooves 9a or protrusions 9b provided on the outer peripheral surface in parallel to the sliding direction.
Inner case 12, which constitutes an impact mechanism, is attached.

The operation of the high voltage generator configured as described above will be explained below.

First, when the inner case 12 is pressed in the inward direction, the hammer pin 8 is locked to a cam portion (not shown) of the outer case 1, and the hammer spring 11 is compressed to store impact energy. When further compression is applied, a tapered cam hole (not shown) provided on the side surface of the inner case 12' allows the hammer bottle
is released from the cam portion of the outer case 1. Therefore, the cylindrical hammer 9, which has a plurality of grooves 10a or protrusions 10b on its outer circumferential surface in parallel to the sliding direction, slides on the inner surface of the inner case 12 and hits the piezoelectric elements 3a and 3b via the impact receiver 2. Apply impact force to. This impact force causes the piezoelectric elements 3a, 3
The high voltage generated by the terminal B is taken out by the lead wire 6 attached to the intermediate terminal 4. At this time, the receiver 6 serves as a fixing base and an electrical ground. It is something.

After that, when the pressing force on the inner case 12 is released, the inner case -
The case 12 is returned to its original position by the return spring 7, and the hammer pin 9 is also locked again to the cam portion of the outer case 1.

Effects of the Invention As described above, the present invention provides a plurality of line-shaped grooves or protrusions parallel to the sliding direction on the outer circumferential surface of a cylindrical hammer that applies impact force to the piezoelectric element, thereby improving the inner periphery of the inner case. The contact area between the surface and the cylindrical hammer, and the sliding area of the cylindrical hammer, are reduced, which prevents changes in the viscosity of the lubricating oil from affecting the impact speed of the hammer, which in turn stabilizes the output voltage, making it suitable for practical use. The effects are significant.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a high voltage generator according to an embodiment of the present invention, Fig. 2 is a partially cutaway external perspective view of the inner case impact mechanism, which is the main part of the same embodiment, and Fig. 3 is a conventional FIG. 4 is a partially cutaway external perspective view of a conventional inner case impact mechanism. 1...Outer case, 2...Shock receiver, 3
a, 3b...Piezoelectric element, 4...Intermediate terminal, 6...Bracket is gold, 6...Lead wire, 7... Return spring, 8...Hammer bin, 9...Hammer according to an embodiment of the present invention, 9
a...Groove, 9b...Protrusion, 10...
...Conventional hammer, 11 ...Hammer spring, 12 ...Inner case 0 Name of agent Patent attorney Toshi Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 10 Hammer

Claims (1)

[Claims] An outer case and an inner case are slidably fitted together, the outer case is provided with two piezoelectric elements arranged with the same end faces facing each other, and the inner case is provided with a piezoelectric element that slides on the inner surface of the inner case. A high voltage generator comprising a cylindrical hammer having a plurality of line-shaped grooves or protrusions parallel to the sliding direction on its outer circumferential surface and applying an impact force to the piezoelectric element provided in the outer case.