JPH0144939Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Field] The present invention relates to a high voltage cord holding device.

[Prior art] Steel plates, which are low-cost and have excellent workability and heat resistance, are usually used as structural members in combustion equipment for gas, oil, etc., as well as high-voltage wires for ignition electrodes, switches, sensors, solenoid valves, etc. Electric wires for wiring will be routed. Furthermore, in recent years, the gap between wall plates has become narrower due to the compactness and thinness of combustion equipment, and the amount of electric wires used has increased due to automation and safety improvements in combustion equipment. For this reason, the high-voltage electric wire placed between the wall plates cannot always be reliably held in the middle position between the wall plates, and stray capacitance increases in proximity to the iron wall plate, resulting in reduced ignition performance and The insulation coating is damaged during long-term use due to contact with the corners of the housing, causing problems such as electrical leakage.

As a solution to such inconveniences, the inventor of the present application previously proposed in Utility Application No. 59-85822 that a bulge was provided on the wall plate surface that constitutes the case of the combustion equipment, and an electric wire was strung through the bulge. We proposed a method of fixing the wires, but this method prevents the wires from coming close to the wall surface, thereby avoiding an increase in stray capacitance, but it also prevents the wires from floating above the wall surface. Because the wires are placed in the same position, they tend to float due to some external force or vibration, which causes fluctuations in the stray capacity of the high-voltage wires used to ignite the sparker, which can impede the stable operation of the sparker. A new problem arose.

[Purpose of the invention] The purpose of the invention is to provide a mounting structure for electric wires in combustion equipment that can be installed reliably at a predetermined distance from the wall plate surface and that can reliably prevent an increase in stray capacitance. It's on offer.

[Structure of the invention] The high voltage cord holding device of the invention forms a bulge on a wall plate surface, provides a small hole in the bulge, attaches a fastener to the small hole, and connects an electric wire to the fastener. In the high-voltage cord holding device to be fixed, the bulges are provided at at least two locations, and a protrusion is provided between the bulges.

[Effects of the invention] (a) Since an increase in stray capacitance can be prevented in high-voltage electric wires, ignitability and ignitability can be improved.

(b) An increase in stray capacitance can be prevented in high-voltage wires, and floating of the high-voltage wires is prevented, so fluctuations in stray capacitance are also prevented.

C. The installation of these electric wires is achieved by attaching a fixing device to the small hole of a bulge with a small hole formed on the wall plate surface, and fixing the electric wire to the fixing device.
The above effects a) and b) can be obtained at low cost.

[Example] Next, the present invention will be explained based on an example shown in the drawings.

In Fig. 1, which is a perspective view with a part of the front plate of a gas stove installed with the high-pressure cord holding device of the present invention assembled, 1 is a leg of the gas stove, which is a gas combustion device, and 2 is an iron plate. This is a case for a gas stove that is bent into a box shape and stands on the legs 1. A horizontally long rectangular air outlet 13 into which a grill 12 is fitted is provided at the lower part of the front plate 11, and the back At the top of the plate 14 is an air intake port 1 into which a mesh filter 15 is removably fitted.
6 is provided. 17 is an operation panel attached to the upper right side of the front plate 11; 18 is a temperature control lever provided within the operation panel 17 for adjusting the desired room temperature; 19 is provided within the operation panel 17; This is an ignition lever that opens the main valve, safety valve, etc. of a gas stove, and also operates the ignition device.

Inside the case 2, the upper part is a combustion section 2A, the lower part is a blower section 2B communicating with the combustion section 2A, and the right side is a control chamber 2C. The combustion section 2A and the blowing section 2B have one (upper) side for forming a main air flow path from the inlet 16 to the outlet 13.
An upper hood 21 made of iron plate is provided as a guide plate, and a lower hood 22 is provided as the other (lower) guide plate and mainly functions as a housing for the blower.

Upstream of the main air flow path between the upper hood 21 and the lower hood 22 (the upper space between both hoods), in this embodiment, a windshield wall plate 231 facing the inlet 16 and a ceiling wall plate 232 are provided. , integrated bottom wall board 2
33, a back wall plate 234, and both side wall plates, a combustion box 23 made of heat-resistant steel plate is attached, and has ventilation holes 23A, 23B, and 23C provided at various places.
A burner 24 is provided within the chamber 3. A cylindrical blower fan 25 is installed on the downstream side of the main air flow path, and the fan 25 is driven by a motor 26 disposed within the control room 2C.

Reference numeral 3 denotes a control circuit box fixed to the back plate 14 and mounted on the upper part of the control room 2C.
6. Contains an electronic control circuit for controlling the ignition system, etc.

Reference numeral 4 denotes a spark ignition electrode that is electrically insulated and fastened to the upper hood 21, inserted through a hole provided in the back wall plate 234, and placed at a predetermined position above the burner 24 in the combustion box 23. . The ignition electrode 4 is inserted through a high voltage generator (not shown) provided in the control circuit box 3, the control chamber 2C, and a gap 4A between the upper hood 21 and the front plate 11. They are connected by a high-voltage electric wire 41 provided therein. To attach the high-voltage electric wire 41, as shown in FIG. 3 and FIG. This is accomplished by drilling small holes 44 and 45 at the tips of the wires 43 and 43, attaching fasteners 46 and 47 to the small holes 44 and 45, and fixing the high-voltage electric wire 41 to the fasteners 46 and 47. As a result, the high voltage electric wire 41
is securely held between the upper hood 21 and the front plate 11, and stray volume is minimized. In this embodiment, the fixing members 46 and 47 are plastic bands whose ends are inserted and fitted into small holes.

The plate surface of the upper hood 21, which is located between the two bulges 42 and 43, which has the role of supporting the high voltage electric wire 41 by keeping it away from the surfaces of the upper hood 21 and the front plate 11, is provided with equal intervals. Protrusions, which are ribs 52 and 53 in this embodiment, are provided at two locations. Due to the presence of these two ribs 52 and 53, the high-voltage electric wire suspended in midair between the two bulges 42 and 43 can be easily received even if considerable external force or vibration is applied. This means that it is maintained in a stable supported state that does not vibrate. The shape and number of the ribs may be appropriately determined as necessary. For example, if the ribs 52 and 53 are not short and small as shown in the figure, but are sufficiently long in the vertical direction, the structural strength of the upper hood can be improved. Since the effect of significantly increasing the amount of food can be obtained, the thickness of the food material can be reduced accordingly. 54 is a high voltage generator.

Reference numeral 5 designates an overheat switch fixed to a predetermined position on the front plate 11 of the upper hood 21 with screws, etc., and when the combustion box 23 becomes overheated due to abnormal combustion, it outputs an output to the control circuit to stop combustion. have This overheat switch 5
and a safety circuit (not shown) in the control circuit box 3 are connected by an electric wire 51, and this electric wire 51 is taken from the control room 2C into the gap 4A between the upper hood 21 and the front plate 11. When turned, it tends to come into contact with the corner 211 of the upper hood 21. Therefore, in the present invention, as shown in FIG. 5, a bulge 48 with a small hole 49 at the tip similar to the bulges 42 and 43 is provided on the surface of the upper hood 21 near the corner 211, and the fixing tool 50 is attached to the small hole 48. By attaching it to the hole 49 and fixing the electric wire 51 to the fixing tool 50, the corner 21
It is wired away from 1.

In the above embodiment, the bulges 42, 43, 48 can be press-molded at the same time as the upper hood 21 is formed,
This can reduce manufacturing costs. Furthermore, when forming a bulge with small holes on the surface of a plastic wall plate, it is desirable to mold it simultaneously with the wall plate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a gas stove to which the electric wire attachment structure of the present invention is applied, FIG. 2 is a sectional view thereof, and FIGS. 3 and 4 show the high-voltage electric wire attachment structure. In the figure, 41...High-voltage electric wire, 42, 43...Bulging portion, 44, 45...Small hole, 46, 47...Fixing tool, 52, 53...Rib.

Claims (1)

[Scope of utility model registration request] 1. In a high-voltage cord holding device that forms a bulge on a wall plate surface, provides a small hole in the bulge, attaches a fixing tool to the small hole, and fixes an electric wire to the fastener, the bulge A high voltage cord holding device characterized in that it is provided at at least two locations and a projection is provided between the bulges.