JPH02263014A - High voltage generating device - Google Patents

Abstract

PURPOSE:To prevent the wear in a L-shaped cam and reduce the variation in the operation stroke of an inner case in the endurance performance by padding the L-shaped cam that is formed in the outer case so as to give the same angle as the angle of an impact element piece when it escapes the cam. CONSTITUTION:An L-shaped cam 9 is constituted of padding to give an angle thetathat is same as the angle of an impact element pin 5 when it escapes the cam so as to make the sliding face of the L-shaped cam 9 that is formed in an outer case 1 when the impact element pin 5 escapes the cam produce a line contact with this impact element pin 5. With this arrangement the wear of the L-shaped cam of the outer case caused by repeated operation becomes small, and the variation in the operation stroke until an electric voltage is generated from the initial natural state of the inner case is small and the quantity of displacement of an impact spring 6 is stable and the force of impact is almost the same as the initial state after the endurance, and the high electric voltage generated from a piezoelectric element 2 maintains the initial value and is stable.

Description

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

2. Description of the Related Art Hitherto, this type of high voltage generator has been constructed as shown in FIGS. 1 and 3. In addition, in order to cause the impactor to impact the piezoelectric element, an L-shaped cam formed inside the outer case to engage and release from the impactor pin has a configuration as shown in FIGS. 4 and 5. Met. First, referring to FIGS. 1 and 3, the configuration of the high voltage generator and the engagement state of the cam portion will be explained. In the figure, 1 is an outer case made of an insulating material containing a piezoelectric element 2, 3 is an impactor 4 inside,
This inner case 3 has an impactor pin 6 and an impact spring 6 built therein, and the inner case 3 is slidably engaged with the outer case 1. Further, 7 is a stopper built into the end face of the piezoelectric element 2, and 8 is a return spring.

The operation of the conventional high voltage generator configured as described above will be described below. First, when the inner case 3 is pressed in the direction of the arrow, the impactor pin 5 built into the inner case 3 abuts and engages with the L-shaped cam 11L formed in the outer case 1, and further in the direction of the arrow. When pressed, the impactor pin 6 is moved in the direction of arrow B by the inclined cam 3a formed in the inner case 3, and finally the L-shaped cam 1a and the impactor pin 5 are disengaged. Due to the impact force accumulated by the impact spring 6, the impactor 4 impacts the pad 7 and the piezoelectric element 2
A high voltage will be generated.

Problems to be Solved by the Invention In such a conventional configuration, as shown in FIGS. 4 and 5, when the impactor pin 5 slides away from the L-shaped cam 1 & of the outer case 1, the Since the contact state is point P, the impact load is concentrated at point P, and as a result, the L-shaped cam 1& is worn out by the impactor pin 5. Therefore, the operating stroke from the initial natural state of the inner case 3 to the voltage generation becomes gradually shorter in terms of durability, the amount of displacement of the impact spring 6 is small, and the impact force generated from the piezoelectric element 2 is reduced. There was a problem in that the high voltage applied to the device became low. In addition, when applied to cigarette lighters, etc., the operation of the high voltage generator and the timing of gas ejection are linked, and as this timing is disrupted, the ignition performance of the cigarette lighter itself becomes unstable. It was also extremely inconvenient in terms of quality.

The present invention is intended to solve these problems, and aims to prevent wear of the L-shaped cam provided in the outer case, and to minimize fluctuations in operating stroke of the inner case in terms of durability. It is something to do.

Means for Solving the Problems In order to solve this problem, the present invention provides an L-shaped cam formed on the outer case so that the sliding surface of the impactor pin is in line contact with the impactor pin when the impactor pin is detached. The L-shaped cam is built up at the same angle as the angle of the impactor pin when the cam is detached.

Operation With this configuration, the impactor pin is connected to the L formed in the outer case.
The contact state is not a line contact when sliding away from the letter-shaped cam.
The accumulated impact force is dispersed compared to point contact, and wear caused by the impactor pin of the L-shaped cam is extremely reduced.

Embodiment An embodiment of the present invention will be described below, but since the overall configuration is the same as that in FIG. 1, the explanation will be omitted.

FIG. 2 is an explanatory view showing a state in which an L-shaped cam formed on an outer case of a high voltage generator according to an embodiment of the present invention and an impactor pin are engaged and separated. In Figure 2, 9 is the first
The L-shaped cam of the present invention is formed on the outer case 1 shown in the figure, and the impactor pin 5 is an inclined cam of the inner case (the operation is the same as that of the conventional example shown in Fig. 3, and the explanation will be omitted). The operating position is such that the cam 9 is moved by the L-shaped cam 9 and slid away from the L-shaped cam 9. As is clear from the figure, the impactor pin 5 and the L-shaped cam 9 are in line contact above the line at the same angle θ, and the impact force is distributed and applied to the L-shaped cam 9. It happens.

Effects of the Invention As described above, according to the present invention, the L formed on the outer case
The L-shaped cam is built up at the same angle as the angle when the impactor pin is removed so that the sliding surface of the impactor pin comes into line contact with the impactor pin when the impactor pin is removed. However, the wear of the L-shaped cam on the outer case due to repeated operations is 6.5% compared to conventional products.

There is very little variation in the operating stroke from the initial natural state of the inner case to the voltage generation, the displacement of the impact spring is stable, and the impact force remains almost unchanged from the initial state even after durability, and the piezoelectric element The generated high voltage also maintains its initial value and is stable. In addition, when applied to cigarette lighters, etc., the operation of the high voltage generator and the timing of gas ejection are always maintained, and the ignition performance of the cigarette lighter itself is stable due to the optimal ignition timing adjusted at the initial stage. However, the reliability is greatly improved and the practical value is extremely high.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the structure of a high voltage generator according to the present invention and a conventional example, FIG. 2 is a diagram illustrating a state in which the impactor pin and L-shaped cam are engaged in the device according to the present invention, and FIG. 3 is a conventional example. Figure 4 explaining the operating state of the high voltage generator of
This figure is a diagram explaining the positional relationship between the impactor pin and the L-shaped cam in the conventional device, and FIG. 5 is a diagram similarly explaining the engagement state of the impactor pin and the L-shaped cam. 1... Outer case, 2... Bent piezoelectric element, 3...
...Inner case, 4...Impactor, 5...
・Impactor pin, 6・Mountain impact spring, 9...L-shaped cam. Name of agent: Patent attorney Shigetaka Awano (1 person)

Claims (1)

[Claims] An inner case containing an impactor, an impactor pin, and an impact spring is slidably engaged with an outer case made of an insulating material containing a piezoelectric element, and an impact of an L-shaped cam formed in the outer case is engaged. A high voltage generator in which the L-shaped cam is built up at the same angle as the angle of the impactor pin when the cam is removed so that the sliding surface is in line contact with the impactor pin when the child pin is removed.