JPH0438540Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a high voltage generator that can be applied as an ignition unit for a gas lighter or a simple gas stove, and more specifically, it relates to a high voltage generator that can be used as an ignition unit for a gas lighter or a simple gas stove. Conventional technology relating to a high voltage generator with an improved mounting structure for lead wires connected to the electrode side of An inner case 2 is fitted inside an outer case 1 made of insulating resin so that it can be elastically deflected by a return spring 3 of a compression spring. The formed substantially inverted L-shaped notch (not shown) is engaged with the pin 4a protruding from the hammer 4, so that the hammer 4 is housed so that it can be lowered suddenly by the impact spring 5 of the compression spring. A piezoelectric element 6 is attached to the outer case 1 by protruding a head pin 6a at a position where it can come into contact with the hammer 4.
By connecting the lead wire 8 to one electrode side of the piezoelectric element 6 via the stopper 7 that contacts the piezoelectric element 6 in the case, the gas nozzle and the discharge nozzle are connected to the ground. The device is configured to form a discharge circuit.

Conventionally, in this type of high voltage generator, the lead wire 8 described above is usually attached by welding or gluing the end of the lead wire 8 to the side surface of the stopper 7 protruding from the outer case 1. be.

However, in this case, not only is it extremely time-consuming to attach the lead wire 8, but also the lead wire 8 and the stopper 7 are
There is a risk that the electrical connection may not be established reliably due to insufficient contact with the terminal, and the mounting strength may not be sufficiently satisfactory.

In contrast, a lead wire insertion groove is provided on the inner surface of the resin case into which the receiving metal fitting is fitted in contact with the piezoelectric element, and the end of the lead wire is inserted into the insertion groove and inserted into the resin case. It is known to bring the lead wire into contact with the receiving fitting by positioning the end of the lead wire between the receiving fitting and the receiving fitting to be fitted (Utility Model Application No. 5-162964).

However, in this lead wire mounting structure, if a round shaft-shaped lead wire is used as the lead wire, there is a risk that the terminal installed in the insertion groove of the lead wire may come off just by pinching it with the receiving metal fitting. ,
It is necessary to fill the inner space of the resin case housing the piezoelectric element with an adhesive and to fix the lead wire with the adhesive. Furthermore, if the lead wire has a round shaft shape, it only comes into line contact with the receiving metal fitting, so it is likely that a situation may arise in which sufficient contact between the two cannot be achieved.

Problems to be Solved by the Invention It is an object of the invention to provide a high voltage generating device which is improved so that the lead wire can be mechanically attached simply and firmly, and can be reliably contacted with the stopper.

Means for Solving the Problems In the high voltage generator according to the present invention, the terminal end of the lead wire is formed into a flat plate shape and is positioned and inserted into a groove provided on the inner surface from the open end of the resin case. At the same time, a stopper that clamps and fixes the terminal side of the lead wire with the flat side surface that makes surface contact with the flat terminal side is fitted and fixed in the internal space of the resin case, and is bent from the terminal side to the resin case. It is constructed by mechanically attaching and fixing a lead wire whose tip end is led out to the outside of the resin case using a metal fitting.

Function This high-voltage generator not only simplifies the installation work because the lead wire is mechanically clamped and fixed with the fastener, but also has a flat surface that makes surface contact with the flat end of the lead wire. Since the terminal side of the lead wire is clamped and fixed by the stopper having side surfaces, the lead wire and the stopper can be electrically contacted reliably, and the lead wire can be securely attached mechanically.

Embodiment The following will be described with reference to FIGS. 1 and 2.

The high voltage generator shown in Figure 1 is a small device that can be incorporated as an ignition unit in a piezoelectric gas lighter or simple gas stove, and its basic structure is almost the same as the high voltage generator shown in Figure 3. ing.

This device main body 10 is formed of an outer case 11 and an inner case 12 both made of insulating resin.The outer case 11 is fixed to a lighter case (not shown), and a return spring 13
The inner case 12 is assembled so that it can be moved up and down in response to a finger pressure operation. In addition, inner case 1
A hammer 15 supported by an impact spring 14 so as to be movable up and down is built into the inside of the hammer 2 . The hammer 15 engages the protruding pin 15a with a substantially inverted L-shaped notch (not shown) provided on the side surface of the outer case 11,
When the protruding pin 15a is released from the horizontal portion of the notch as a result of finger pressure operation on the inner case 12, it is assembled so as to be suddenly moved downward by the impact spring 14. In accordance with the vertical position of this hammer 15, the outer case 1
A piezoelectric element 16 is housed in the hammer 15 by protruding a head pin 16a toward the built-in side of the hammer 15. The piezoelectric element 16 generates a high voltage upon receiving the impact of the hammer 15, and is fixed inside the outer case 11 with a stopper 17 that is press-fitted from the lower open end of the outer case 11. . In this high voltage generator, the stopper 17
A block-like object having a flat side surface 17a is assembled as a block, and the inner space 11a of the outer case 11 into which the stopper 17 is press-fitted is a rectangular space corresponding to the shape of the circumferential side surface of the stopper 17. The lower part of the outer case 11 is opened. Internal space 1 into which this metal fitting 17 is fitted
A groove 1 is formed on the inner surface of the outer case 1a by increasing the thickness in the vertical direction above the open end of the outer case 11.
8 is provided. The concave groove 18 is on the tip side 19
A lead wire 19 led out to the outside of the outer case 11 is attached with the end a facing diagonally upward, and the terminal side 19b of the lead wire 19 inserted inside this groove 18 is shown in FIG. In order to increase the contact area with the inner bottom surface of the groove 18 and the flat side surface 17a of the stopper 17, it is formed into a flat plate shape. The lead wire 19 connects the terminal side 19b to the tip side 1
It is attached by bending the axis from 9a into a substantially U-shape or V-shape and inserting it into the groove 18 from the open end of the outer case 11. During this installation, connect the terminal side 19b of the lead wire 19 to the outer case 11.
The stopper 17 is preferably press-fitted into the internal space 11a of the outer case 11 by positioning and inserting it into the groove 18 of the stopper 17. By press-fitting the stopper 17, the end side 19b of the lead wire 19 comes into surface contact with the side surface 17a of the stopper 17. By doing so, it is mechanically clamped and fixed. Note that, in order to increase the discharge surface, the tip end 19 of the lead wire 19 is preferably formed into a round bar or square bar shape that is thicker than the flat terminal end 19b. In the high voltage generator configured in this way, the terminal side 19b formed in a flat plate shape of the lead wire 19 is connected to the groove 1 of the outer case 11.
8 and press-fit the stopper 17 in contact with the piezoelectric element 16 into the inner space 11a of the outer case 11 where the groove 18 is located, thereby securing the terminal side 19b of the lead wire 19 to the stopper 17
It is mechanically clamped and fixed with lead wire 1.
The terminal side 19b formed in the shape of a flat plate of 9 is clamped and fixed by directly contacting the flat side surface 17a of the stopper 17 with a large surface. Therefore,
The lead wire 19 can be firmly fixed mechanically with a simple assembly process, and the flat side surface 1 of the stopper 17
7a from the place where it can make close surface contact with the stopper 1.
It is attached so that it can be electrically connected reliably to the piezoelectric element 16 via 7.

In addition, when this high voltage generator is incorporated into a piezoelectric gas lighter, the lead wire 19 is arranged so as to be able to contact the vertical operation lever of the gas nozzle and connected to the ground, and the other pole side of the piezoelectric element 16 is connected to the discharge nozzle. In addition, the lead wire 19 can be used as a discharge nozzle or connected to a separately installed discharge nozzle to form a discharge side, and the other pole side of the piezoelectric element 16 and the vertical movement lever of the gas nozzle can be connected to ground, so that the gas nozzle can be connected to the gas nozzle. It is possible to configure a discharge circuit that performs spark discharge from a discharge nozzle toward the target.

Effects of the Invention As described above, according to the high voltage generator according to the present invention, a lead wire forming a discharge circuit can be attached to the resin case using a fastener that is fitted and fixed in the inner space of the resin case with a simple work and can be done mechanically. In addition to being able to be firmly assembled, the lead wire can be brought into sufficient contact with the stopper that contacts the piezoelectric element, and a discharge circuit with the piezoelectric element can be reliably formed.

[Brief explanation of the drawing]

Figure 1a is a longitudinal sectional view of the high voltage generator according to the present invention, Figure 1b is a bottom view of the generator, and Figures 2a and b are side views of lead wires that can be incorporated into the generator. FIG. 3 is a longitudinal sectional view of a conventional high voltage generator. DESCRIPTION OF SYMBOLS 11... Resin case, 11a... Inner space of resin case, 16... Piezoelectric element, 17... Stopper, 17a... Flat side surface of stopper, 18...
Concave groove, 19...Lead wire, 19a...Tip side of lead wire, 19b...Terminal side of lead wire.

Claims (1)

[Scope of utility model registration request] A piezoelectric element is housed in the case from the open end of the resin case, a stopper is fitted and fixed in the internal space near the open end of the resin case to fix and support the piezoelectric element in the case, and A lead wire is provided whose terminal side is inserted into the case from the open end and placed in contact with the stopper, and by electrically connecting the lead wire to the electrode side of one side of the piezoelectric element, the other side of the piezoelectric element is connected. In a high voltage generator that forms a discharge circuit with the electrode side and generates a high voltage by the impact applied to the piezoelectric element, the terminal side of the lead wire is formed into a flat plate and is installed from the open end of the resin case to the inner surface. The lead wire is positioned and inserted into the recessed groove, and a stopper that clamps and fixes the terminal end of the lead wire with a flat side surface that makes surface contact with the flat terminal end is fitted and fixed in the inner space of the resin case. A high voltage generator, characterized in that a lead wire whose axis is bent from the terminal side and whose tip end is led out to the outside of the resin case is mechanically attached and fixed to the resin case with a fastener.