JPH0144938Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field] The present invention relates to a mounting structure for electric wires in combustion equipment.

[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.

[Purpose of the invention] The purpose of the invention is to make it possible to install electric wires reliably at a predetermined distance from the wall plate surface in combustion equipment, increase the stray capacitance, and ensure contact with the corners of the wall plate. The purpose of the present invention is to provide an electric wire mounting structure that can prevent such problems.

[Structure of the invention] The mounting structure for electric wires in the combustion equipment of the invention is as follows:
The structure is such that a bulge is formed on the wall plate surface, a small hole is provided in the bulge, a fastener is attached to the small hole, and an electric wire is fixed to the fastener.

[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) It is possible to prevent electric wires from coming into contact with edges such as corners of wall plates, and damage to the insulation coating and electrical leakage due to such contact can be 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.

1 is the leg of a gas stove, which is a gas-burning device, 2
is a gas stove case formed into a box shape by bending an iron plate and installed upright on the leg 1;
A horizontally long rectangular air outlet 13 into which a grille 12 is fitted is provided at the lower part of the front plate 11.
An air intake port 16 into which a mesh filter 15 is removably fitted is provided at the upper part of the air inlet 4. 1
7 is an operation panel attached to the upper right side of the front plate 11; 18 is provided inside the operation panel 17;
Temperature control lever for adjusting the desired room temperature, 19
is an ignition lever provided in the operation panel 17 that opens the main valve, safety valve, etc. of the gas stove and 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 a heat-resistant copper 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. The high-voltage electric wire 41 is attached by pressing bulges 42 and 43 at predetermined positions of the upper hood 21 in the direction of the front plate 11, as shown in FIG. small hole 44
and 45, fixing devices 46 and 47 are attached to the small holes 44 and 45, and the high voltage electric wire 41 is fixed to the fixing devices 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,
Stray capacity will be minimal. In this embodiment, the fixing members 46 and 47 are plastic bands whose ends are inserted and fitted into small holes.

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 3 are connected by an electric wire 51, and this electric wire 51 is routed from the control room 2C into the gap 4A between the upper hood 21 and the front plate 11. When it is pressed, it tends to come into contact with the corner 211 of the upper hood 21. Therefore, in the present invention, as shown in FIG. 4, 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 hood 21 near the corner 211, and the fixing tool 50 is attached to the small hole. 4
9, and by fixing the electric wire 51 to the fixing tool 50, the wire is routed away from the corner 211 so as not to come into contact with the corner 211.

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, FIG. 3 is a high-voltage electric wire attachment structure, and FIG. 4 is an electric wire attachment structure. In the figure, 41...high voltage electric wire, 42, 43, 48...
...bulge, 44, 45, 49... small hole, 51...
Electrical wire.

Claims (1)

[Scope of utility model registration request] A structure for attaching electric wires to a combustion appliance, in which a bulge is formed on a wall plate surface, a small hole is provided in the bulge, a fastener is attached to the small hole, and an electric wire is fixed to the fastener.