KR0148392B1 - High voltage cord connecting structure - Google Patents

Abstract

The present invention aims to provide a connection structure between a high voltage generator and a high voltage cord in which a high voltage cord is not easily removed. The configuration of the pin 113 is located inward of the end surface 112a of the cylinder 112. The tip end portion of the terminal port 21 protrudes outward from the tube-in hole 311a and is fixed to the small portion 312 and the high voltage cord 2 of the rubber tube 31, and is connected to the pin 113. When the sphere 21 is inserted, the outer fitting of the rubber tube 31 into the cylinder 112 is completed.

Description

High voltage cord connection structure for gas burner high voltage generation

1 is a perspective view showing a connection structure between a piezoelectric generator and a high voltage cord according to a first embodiment of the present invention.

2 is a perspective view of a connection structure according to a first embodiment of the present invention, viewed from another direction;

3 is a cross-sectional view (lateral direction, upward direction) showing a connection structure according to the first embodiment of the present invention.

4 is a perspective view showing a connection structure between a piezoelectric generator and a high voltage cord according to a second embodiment of the present invention.

5 is a cross-sectional view (lateral direction, upward direction) showing a connection structure according to a second embodiment of the present invention.

6 is a cross-sectional view showing another embodiment of the projection in the second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: Piezoelectric generator (high voltage generator) 2: High voltage cord

21: terminal port 22: coated lead wire

31: rubber tube (elastic insulation tube) 41, 42: protrusion

112: cylinder (cylindrical shape) 113: pin

311a: tube opening hole surface (open hole surface) 1120: insertion hole

A: Connection structure of piezoelectric generator and high voltage cord (connection point of high voltage generator and high voltage cord)

The present invention relates to a high voltage cord connection structure of a gas combustion mechanism high voltage generator.

At present, when the ignition knob is rotated, the driving plate pushes the hammer up and releases the support, so that the piezoelectric ignition device that generates a piezoelectric force by colliding the hammer with the piezoelectric element fixed to the piezoelectric base plate is used. It is used as an ignition device for gas combustion appliances.

In the conventional ignition apparatus, the high voltage generated by the piezoelectric element is supplied to the ignition electrode provided in the gas burner by a high voltage cord which is inseparably connected to the piezoelectric element.

However, in the case of a high voltage cord that is not detachable, there is a fear that the cord may interfere with the assembling work and the cord may be damaged.

Thus, the inventors project an insulated cylindrical portion to the element housing, and include a piezoelectric element in which a cylindrical pin is disposed in the cylindrical portion; A high voltage cord having a circumferential terminal port, a coated lead wire having the tip fixed to the terminal port, and an elastic insulating tube surrounding the terminal port; and having the high voltage cord as a separate part to allow attachment and detachment from a piezoelectric element. I made a prototype.

By the way, the prototype had a high voltage cord connected to a piezoelectric element, and then the terminal was easily pulled out of the pin when a force was applied to the high voltage cord.

However, it has been found that the prototype (the pin is changed into a flat plate shape) has the following problems.

In other words, it is difficult to insert because the terminal port should be rounded to the pin, and after inserting the terminal port into the pin, an elastic insulating tube should be inserted outside the insulated tube shape. To this end, since the inner diameter of the elastic insulating tube and the outer diameter of the insulating cylindrical portion are formed to be substantially the same, it is difficult to fit and there is a problem that it takes time to connect the high voltage cord and the piezoelectric element.

In addition, water or soup easily enters the gap between the elastic insulating tube and the insulating tubular portion, and causes high voltage to be leaked to the outside through the intruded water or soup.

The first object of the present invention is to provide a high voltage cord connection structure of a gas combustion apparatus high voltage generator that is easy to be connected to the high voltage cord, and the second object is a high voltage of the gas combustion apparatus high voltage generator that does not easily invade water or soup. To provide a code connection structure.

MEANS TO SOLVE THE PROBLEM This invention employ | adopted the following structures in order to solve the said subject.

(1) a high voltage generator which protrudes an insulating tubular portion having an insertion hole with a rectangular cross section, and has a plate-shaped pin for outputting a high voltage in the insertion hole; And a high voltage cord comprising a terminal port engaged with the pin, a coated lead wire fixed to the terminal port, and an elastic insulating tube surrounding the terminal port, wherein the front end surface of the pin is at the front end surface of the tubular portion. A distance y located inward by the distance x, and a rear end of the elastic insulating tube is fixed to the coated lead wire, and a distance y set at the tip end of the terminal hole longer than the distance x from the open hole surface of the elastic insulating tube. Protrude outwardly, and engaging the terminal with the pin completes the outer fitting of the elastic insulating tube into the tubular portion.

(2) It has the structure of said (1), One or several protrusion was formed in the circumference | surroundings of either a normal part outer peripheral wall or a tube inner peripheral wall.

Hereinafter, the operation of the present invention according to the above configuration.

First, the effect | action by the structure of said (1) is demonstrated.

Grasp the rear end of the elastic insulating tube and fit the terminal hole of the coated lead wire to the pin in the cylindrical part.

The terminal port is placed close to the cylindrical part and the terminal port is engaged with the tip of the pin. Since the cross-sectional shape of the insertion hole is rectangular, if the terminal port is directed into the cylindrical part, the direction of the terminal port will naturally fit to the tip of the pin. Therefore, when inserted in this state, the terminal port is fitted to the tip of the pin.

The tip end face of the pin is located inwardly by the distance x from the tip end face of the tubular portion, and the tip end of the terminal port protrudes outward from the open hole face of the elastic insulating tube by the distance y (y. Since the rear end of the insulated tube is fixed to the skin lead wire, when the elastic insulated tube is pushed into the tubular portion, it is guided by the engagement of the terminal hole and the pin so that the elastic insulated tube is sandwiched outside.

Next, the effect | action by the structure of said (2) is demonstrated.

Intrusion of water or boiling broth is reduced by projections formed around the outer peripheral wall of the tubular portion or the inner circumferential wall of the tube.

Hereinafter, the effects of the present invention according to the configuration and operation will be described.

First, the effect by the structure and operation | movement of said (1) is demonstrated.

Since the cross-sectional shape of the insertion hole is a rectangular parallelepiped and the terminal port protrudes from the tube-in hole surface, when the terminal port is directed into the tubular part, the terminal port is in a direction that is naturally engaged with the pin. Can be fitted.

Since the distance (y) is the distance (x) and the rear end of the elastic insulating tube is fixed to the coated lead wire, the terminal hole of the coated lead wire is guided by the engagement of the pin in the cylindrical part to position the elastic insulating tube relative to the cylindrical part. Since this is done and the insertion is completed, the work is easy and the work is completed at once, so that the connection between the high voltage generator and the high voltage cord does not take time.

Next, the effect by the structure and operation of said (2) is demonstrated.

Since water or broth is blocked by projections and does not enter the tubular portion, a short circuit of high voltage can be prevented.

EMBODIMENT OF THE INVENTION Hereinafter, an Example is described in detail based on drawing.

A first embodiment of the present invention will be described with reference to FIGS.

As shown in the drawing, the connection structure A between the piezoelectric generator and the high voltage cord is detachable from the piezoelectric generator 1 provided in the cutout portion 101 of the piezoelectric base plate 100 and the piezoelectric generator 1. It consists of the high voltage cord 2 connected freely.

As shown in FIG. 1 and FIG. 2, the piezoelectric generator 1 has a piezoelectric element 11 which generates a high voltage (about 16 kV), and the piezoelectric element 11 falls off at the notch 101. As shown in FIG. And a pressing plate 12 for preventing, a hammer 13 for hitting the piezoelectric element 11, and a hammer finger spring 14 for holding the hammer 13.

The piezoelectric element 11 is molded with an insulating plastic housing which protrudes the cylinder 112 from the housing rear surface 111 (the front side in FIG. 1), and the element body is molded in the center of the bottom of the insertion hole 1120. The flat pin 113 (made of electrically conductive metal) in which the circular hole 113a was formed in the front-end | tip is arrange | positioned (direction is horizontal).

The pin 113 for outputting the high voltage is such that the pin tip is positioned inwardly by the distance x than the tip end face 112a of the cylinder 112 (implementing the chamfers 112b and 112c on the outer and inner circumferential sides). The cross section having a cross-sectional shape corresponding to the cross section is disposed in the rectangular insertion hole 1120.

The pressing plate 12 is a plate spring folded twice, and is fitted to the wide portion 102 of the cutout portion 101 to hold the piezoelectric element 11 downward.

The hammer finger spring 14 is coiled, one end of which is fitted into the spring supporting protrusion 103 formed on the piezoelectric base plate 11, and the other end of which is fitted into the recess 131 of the hammer 13.

The hammer 13 has a rod shape, and is held in the direction of the piezoelectric element 11 by the hammer finger spring 14. Moreover, as shown in FIG. 2, the hammer 13 is pushed up by the drive piece 105a of the drive plate 105 which rotates in association with the rotation of the shaft 104. As shown in FIG.

As shown in Figs. 1 and 3, the high voltage cord 2 includes a terminal port 21, a coated lead wire 22 electrically connected to the terminal port 21, and a rubber surrounding the terminal port 21. It consists of a tube 31.

The terminal port 21 is formed of a conductive metal, and has a front end portion 211 fitted to the pin 113 and a rear end portion 212 for fastening and fixing the core wire 221 of the coated lead wire 22.

The tip portion 211 has an arc-shaped portion that is curved to be wound in a plate surface direction at each edge portion of the flat plate portion, and the pin 113 is inserted into a gap formed between the flat plate portion and the arc-shaped portion tip surface. Further, a circular protrusion 211a fitted into the circular hole 113a of the pin 113 is formed in the flat plate portion behind the tip portion 211.

The coated lead wire 22 is formed by covering the core wire 221 with rubber, and the rear end of the core wire 221 is connected to an ignition electrode (all not shown) arranged near the gas burner.

The rubber tube 31 (made of rubber having an electric insulated wire) has an inner diameter almost the same as the outer diameter of the cylinder 112, and has a large diameter portion 311 (left side) and a sheathed lead wire surrounding the terminal port 21. A small diameter (hereinafter referred to as a small portion) 312 having a small diameter that is fixed to the coating of (22) is provided, and the tip end of the terminal port 21 is formed from the tube-hole hole surface 311a. It is positioned so as to protrude outward by the distance y (except yx).

Here, the connection method of the piezoelectric generator 1 and the high voltage cord 2 is demonstrated.

After holding the small part 312 (rear end) of the rubber tube 31, the front end of the terminal port 21 of the high voltage cord 2 in the horizontal state is directed into the insertion hole 1120 of the cylinder 112. When pushed, the tip portion 211 (gap) of the terminal port 21 is automatically positioned by the insertion hole 1120 with respect to the tip of the pin 113, whereby the tip portion 211 (gap) is pin 113 ) Is inserted into the tip.

Moving further, the terminal port 21 is inserted into the pin 113, and the distance (x, y) is set so that the terminal port 21 and the pin 113 are guided by the engagement of the rubber tube 31. The cylinder 112 covers the cylinder 112 and further pushes the circular protrusion 211a into the circular hole 113a so that the terminal sphere 21 and the pin 113 are completely engaged.

When the fitting of the terminal port 21 and the pin 113 is completed, the fitting of the rubber tube 31 and the cylinder 112 is also completed.

This embodiment has the following advantages.

(A) Since the cross-sectional shape of the insertion hole 1120 is rectangular, and the terminal hole 21 protrudes from the tube-hole hole surface 311a, when the terminal hole 21 is inserted into the cylinder 112, the terminal will naturally be made. The sphere 21 can be inserted into the pin 113.

Moreover, since the small part 312 of the rubber tube 31 is adhesively fixed to the coating | cover of the coating lead wire 22 in the distance (y) and the distance (x), the engagement of the terminal port 21 and the pin 113 is carried out. Since the positioning of the cylinder 112 of the rubber tube 31 is guided and the fitting is completed, the fitting operation is easy and the operation is completed at a time, so that the piezoelectric generator 1 and the high voltage cord 2 are completed. Does not take time to connect.

(B) Since the pin 113 disposed in the cylinder 112 has a flat plate shape, and the high voltage cord 2 and the terminal port 21 are shaped to be fitted outside the pin 113, they are not easily peeled off. Also, the fitting is secure and the fitting does not rotate even after the insertion, so that no contact failure occurs.

Moreover, since the circular protrusion 211a is formed in the flat plate part of the rear end part 211 of the terminal port 21, and the circular hole 113a is formed in the front-end | tip of the pin 113, it turns out that fitting is completed. In addition, the terminal port 21 is not easily pulled out of the pin 113 even when the high voltage cord 2 is pulled to the rear side.

(C) Since the chamfers 112b and 112c are provided on the outer periphery and the inner circumferential side of the tip end face 112a of the cylinder 112, the terminal port 21 is easily inserted into the insertion hole 1120 (the chamfer 112c). } And the rubber tube 31 is easily covered with the cylinder 112 (by the chamfer 112b).

Next, a second embodiment of the present invention will be described with reference to FIGS.

In the present embodiment, only the points in which the projections 41 and 42 are formed on the outer circumference of the cylinder 112 are different from the first embodiment.

Since projections 41 and 42 formed on the outer circumference of the cylinder 112 prevent water or broth from entering the cylinder 112, leakage of the high voltage of the pin 113 can be prevented and ignition failure can be prevented. In addition, since the rubber tubes 31 are not easily removed from the cylinder 112 by the projections 41 and 42, the connection between the high voltage cord 2 and the piezoelectric generator 1 becomes more robust.

The present invention includes the following embodiment in addition to the above embodiment.

a. The cross section of the insulating tubular portion and the elastic insulating tube may be triangular, square, rectangular, polygonal, elliptical, or the like in addition to circular.

b. In the second embodiment, the directions of the projections 41 and 42 are perpendicular to the cylinder 112, but may be inclined. In this case, as shown in FIG. 6, when the surface is inclined toward the rear side of the housing 111, the rubber tube 31 can be easily inserted into the cylinder 112, thereby preventing further fall out and at the same time invading water or broth. Can be prevented more effectively.

c. The projections 41 and 42 may be formed on the inner circumferential wall surface of the rubber tube 3.

d. An elastic insulating tube may be formed on the high voltage generator side, and a cylinder may be formed on the high voltage cord side. In the above embodiment, the terminal port on the side of the elastic insulating tube is inserted outside the pin on the high voltage generator side, but the pin on the side of the high voltage generator may be inserted outside the terminal port on the side of the elastic insulating tube.

Claims (1)

A high voltage generator protruding an insulating tubular portion having an insertion hole having a rectangular cross section, and having a plate-shaped pin for outputting a high voltage in the insertion hole; A gas combustion device comprising: a terminal port engaged with the pin, a coated lead wire having the tip fixed to the terminal port, and a high voltage cord made of an elastic insulating tube surrounding the terminal port. It is located inward by the distance (x) from the front end surface of the shape, and the rear end of the elastic insulating tube is fixed to the sheathed lead wire, and the front end of the terminal port is set longer than the distance (x) from the open hole surface of the elastic insulating tube Protruding outward by a distance y and engaging the terminal with the pin completes the outer fitting of the elastic insulating tube into the tubular portion, and either the circumferential outer wall or the inner circumferential wall of the tube. The high voltage cord connection structure of the high temperature generator of the gas combustion apparatus characterized by the above-mentioned.