JPS638151Y2 - - Google Patents

Description

[Detailed description of the invention] The invention aims to ignite gas, etc. by applying a shock to a piezoelectric element and using the generated high voltage.
It relates to a high voltage generator.

Conventionally, most of the structures of high voltage generators that are a combination of an inner case and an outer case include a piezoelectric element and a shock receiving part of a shock receiving screw in the outer case, and a shock receiving part of a piezoelectric element and a shock receiving screw in the inner case. This method has a built-in impact element and impact spring to form the impact part, and the assembly is complicated.The impact receiving part and the impact part are separate parts, so the energy from the impact of the impact element is reduced. efficiency was not necessarily good.

The present invention attempts to eliminate the above-mentioned drawbacks of the prior art.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, 1 is a piezoelectric element, 2 is a stopper, 3 is a receiving screw, 4 is an inner case, 5 is an impactor,
6 is an impact spring, 7 is a press-fit cap, and 8 is a locking member made of a conductive elastic material and also serving as a grounding terminal for the piezoelectric element 1. In the present invention, a plate spring is used as an embodiment. . 9 is the outer case, 1
0 indicates a return spring, and 11 indicates a high voltage lead wire.

To briefly explain how to assemble it, go to inner case 4,
Insert the pad 2 and piezoelectric element 1, fix with the receiving screw 3, insert the impact pre-loader 5 and impact spring 6 from the opposite direction,
Press-fit the press-fit cap 7 so that the concave portion 4a of the inner case and the convex portion 7a of the press-fit cap engage with each other. Next, return the spring 10 and the locking member 8 into the outer case 9.
and fit the inner and outer cases together so that the high voltage lead wire 11 is located in the high voltage lead wire escape hole 9a of the outer case.

In FIG. 2, when the inner case 4 is pressed toward the outer case 9, the impactor 5 resists the elasticity of the impact spring 6 because it is engaged with the impactor engaging portion 8a of the locking member 8. and moves in the opposite direction to the inner case 4. When the inner case 4 is further pressed, the engaging portion 8a of the locking member 8 is pushed up in the outer circumferential direction by the convex portion 4b of the inner case, and the engagement between the impactor 5 and the locking member 8 is released. The impactor 5 impacts the pad 2 due to the elasticity of the impact spring 6, and generates a high voltage from the piezoelectric element 1 through the high voltage lead wire 11. At this time,
The locking member 8 is electrically connected to the receiving screw 3 via the ground portion 8b when the outer case 9 is insulative, or by the method described above or the outer case when the outer case 9 is conductive. 9 and a return spring 10, they are similarly electrically connected. Next, when the pressing force on the inner case 4 is released, the inner case 4 returns to its original state due to the elasticity of the return spring 10.

As described above, the present invention includes an inner case and an outer case that are slidably assembled, an impact section, a piezoelectric element, and an impact receiving section that are installed inside the inner case, and a conductive wire that is also used as a grounding terminal for the impactor. When the locking member made of elastic material is directly engaged and the relative position of the inner case and outer case is moved to a predetermined position, the engagement between the impactor and the locking member made of elastic material is released. , the structure is such that the piezoelectric element is impacted, so no impactor pin for engagement is used in the impactor, and the return to the original state is automatically performed by the restoring force of the return spring and the elasticity of the locking member. It is configured to return. Most of the main components of the piezoelectric device are integrated into the inner case, and the impact section and impact receiving section are integrated into the same part, resulting in smooth impact operation and good impact efficiency. Stable characteristics can be obtained, and by eliminating the impactor pin, assembly is extremely easy, and there are also high cost advantages.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of a high voltage generator which is an embodiment of the present invention, of which FIG. 1 shows a steady state, and FIG. 2 shows a state in which the inner case is pressed. DESCRIPTION OF SYMBOLS 1...Piezoelectric element, 2...Batch, 3...Reception screw, 4...Inner case, 5...Impactor, 6...Impact spring, 8...Locking member (plate spring), 9... Outer case, 10...Return spring.

Claims (1)

[Scope of utility model registration request] It has an inner case and an outer case that are movable relative to each other and engaged with each other, and a piezoelectric element is fixed to the inner case, and an impactor faces the piezoelectric element to apply an impact force. The impactor is slidably housed in the inner case, which includes a built-in biasing means, and the impactor is slidably inserted into the outer case until the relative position between the inner case and the outer case is moved to a predetermined position. By being locked by a locking member which is made of a conductive elastic material and which also serves as a grounding terminal for the piezoelectric element, the piezoelectric element can be pulled away from the piezoelectric element while resisting the urging pressure of the urging means. When the relative position of the inner case and the outer case is further moved to a predetermined position, the impactor is released from the locking member and is subjected to the biasing pressure of the biasing means. A high voltage generator characterized in that it is configured to apply an impact to the piezoelectric element.