JPH0782906B2 - Heater panel for electric heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to a flat plate-shaped heater panel for electric heaters provided in an electric rice cooker, an electric pot, and the like.

[Prior Art] Conventionally, in various electric heaters such as an electric rice cooker, an electric pot, etc., a flat plate-shaped heater plate is built in a heating portion, and the flat plate-shaped heater plate is composed of two sheets. The heat-resistant insulating plates are arranged two-dimensionally, and the heating wire is wound around one of the two heat-resistant insulating plates, and then hung on the other heat-resistant insulating plate and wound in series on it. Each of the heat-resistant insulating plates had a structure in which both sides were sandwiched by heat-resistant insulating plates and further covered with a metal plate exterior body.

[Problems to be Solved by the Invention] By the way, in the conventional heater panel for an electric heater as described above, one of the heat-resistant insulating plates is wound at the end of winding and the other end of the heat-resistant insulating plate is wound at one end. Pass the heating wire wound around the insulating plate through the stop hole and wind it once or twice to fix it, and then pass through the stop hole of the other heat-resistant insulating plate and fix it in the same way.
Furthermore, the heating wire is wound around the other heat-resistant insulating plate, but passing the heating wire through the stop hole many times in this way means that the heating wire passing through the stop hole is still quite long. Therefore, the work is extremely troublesome, and it may not be possible to efficiently perform the winding work of the heating wire, or the heating wire itself may be twisted in the process of passing through the stop hole and the strength may be impaired, or there is a risk of cutting. There was a problem.

The present invention arranges a pair of heat-resistant insulating plates in a plane and sequentially winds a heating wire on one heat-resistant insulating plate from the winding start part to the winding end part, and from the winding end part to the other heat-resistant insulating plate. A heating wire is applied to the winding start part of the insulating plate, and further, the heating wire is wound continuously toward the winding end part of the other heat-resistant insulating plate so that the winding directions are opposite to each other, and the heating wire is wound continuously in a flat plate shape. Even if a heater board is configured, a groove cut diagonally inward from the peripheral edge to the winding direction of the heating wire at the winding end part of one heat-resistant insulating plate and the winding start part of the other heat-resistant insulating plate The heating wires can be securely hooked to the pair of heat-resistant insulating plates by simply hooking the heating wires inside, and the pair of heat-resistant insulating plates can be joined by the heating wires to form a flat plate. To provide a heater panel for an electric heater that can be used as a heater panel for One in which the.

[Means for Solving the Problems] In order to achieve the above object, in a heater panel for an electric heater according to the present invention, a pair of heat-resistant insulating plates are arranged in a plane, and one of the heat-resistant insulating plates is wound from a winding start portion. The heating wire is wound continuously toward the winding end part, and the heating wire is hung from the winding end part toward the winding start part of the other heat-resistant insulating plate, and further, the heating wire is connected to the other heat-resistant insulating plate. In the case where a flat plate-shaped heater panel is constructed by continuously winding the winding direction so that the winding directions are opposite to each other toward the winding end portion, the winding end portion of one heat-resistant insulating plate and the winding start of the other heat-resistant insulating plate In the section, each groove is formed by cutting inwardly obliquely inward with respect to the winding direction of each heating wire from the periphery, and the heating wire extending from one heat-resistant insulating plate to the other heat-resistant insulating plate is slanted inward. Hang each in the groove cut into In addition, the heating wire is hooked on a pair of heat-resistant insulating plates, and the heating wire is used to join the pair of heat-resistant insulating plates into a flat plate shape.

[Operation] In the manufacturing process of the heater panel for an electric heater according to the present invention,
The winding end portion of the heating wire, which is sequentially wound from the winding start portion of one heat-resistant insulating plate, is formed by cutting the winding end portion of the heat-resistant insulating plate from the peripheral edge toward the winding direction of the heating wire diagonally inward. The heating wire is hooked on the pair of heat-resistant insulating plates and fastened to the groove. Then, the heating wire hooked at the winding end of one heat-resistant insulating plate as described above is passed to the winding start part of the other heat-insulating insulating board, and diagonally inward with respect to the winding direction of the heating wire from the peripheral edge in the same manner as above. , And the heating wire is wound continuously toward the winding end portion of the other heat-resistant insulating plate, and the winding of the heating wire is completed.

Then, the heating wire wound with the heating wire in this manner, from the peripheral edge of the heat-resistant insulating plate, since it is respectively hooked in the groove formed inwardly obliquely inward with respect to each winding direction, The hooked portion of the heating wire is locked so as to bite into the groove as the tension in the winding direction is received.
Therefore, there is no fear that the heating wire will come off even in the process of processing the pair of heat-resistant insulating plates after winding the heating wire, and furthermore, the heating wire hooked in each groove will make a pair. The heat-resistant insulating plates can be combined and held in a flat plate shape.

[Embodiment] An embodiment of a heater panel for an electric heater according to the present invention will be described with reference to the drawings.

1 to 3, reference numeral 1 denotes a flat plate-shaped heater plate for an electric heater. The heater plate 1 for an electric heater has a pair of heat-resistant insulating plates 2 and 2'arranged in a plane between them. The main heating wire 3 and the auxiliary heating wire 4 are successively and continuously wound so that their winding directions are opposite to each other, and both surfaces of the pair of heat-resistant insulating plates 2 and 2'arranged in a plane are covered with the heat-resistant insulating plate 5. It is sandwiched between, and is integrally held by an exterior body 6 made of a metal plate. The main heating wire 3 is in the shape of a flat belt, the auxiliary heating wire 4 is in the form of a thin wire, and the main heating wire 3 and the auxiliary heating wire 4 are wound so as to be lined up on both sides and only on one side. . The main heating wire 3 is for heating, and the auxiliary heating wire 4 is for keeping heat after heating, for example.

The main heating wire 3 is passed through a stop hole 7 formed at the winding start portion of one heat-resistant insulating plate 2, and then continuously wound up to the winding end portion thereof. Further, the auxiliary heating wire 4 is hooked in the notch groove 8 at the winding start portion and similarly continuously wound so as not to contact the main heating wire 3. Then, at the winding end portion of one heat-resistant insulating plate 2, the main heating wire 3 was hooked in a groove 9 which was cut inwardly from that edge toward the winding direction of the main heating wire 3 from its peripheral edge. In addition, the main heating wire 3 is placed at the winding start portion of the other heat-resistant insulating plate 2 ',
The main heating wire 3 is hooked in a groove 9'which is formed inwardly and obliquely inward with respect to the winding direction of the main heating wire 3 which is in the opposite direction from the peripheral edge, and the other heat-resistant insulating plate 2'to the end of the winding. The heat-resistant insulating plate 2'is wound continuously in such a manner that the winding directions are opposite to each other, and at the winding end portion of the other heat-resistant insulating plate 2 ', it is pulled out through the stop hole 7'of that portion. On the other hand, the auxiliary heating wire 4 wound up to the end of winding of the heat resistant insulating plate 2 is hooked on the notch 10 at the end of winding of one heat resistant insulating plate 2 to
Approximately 2 times, wind it on the other end of the heat-resistant insulating plate 2'and hang it in the cut groove 10 'and wrap it once or twice to fix it. It is wound so as not to come into contact with the heating wire 3, and is hooked on the cut groove 8'at the end of the winding.

As described above, the main heating wire 3 continuously wound around the pair of heat resistant insulating plates 2 and 2'has the winding end portion of one heat resistant insulating plate 2 and the winding start portion of the other heat resistant insulating plate 2 '. In the portion, it is further hooked in the grooves 9 and 9 ′ formed by cutting inward from the peripheral edge of the main heating wire 3 inwardly with respect to the winding direction of the main heating wire 3 and further subjected to tension in the winding direction. Since it is assembled in the grooves 9 and 9 ', there is no possibility that the main heating wire 3 will come off in the additional process after winding the heater panel 1, and moreover, the main electric wire hooked in the grooves 9 and 9' The pair of heat-resistant insulating plates 2, 2'can be joined and held in a flat plate shape by the heating wire 3. Since the middle part of the main heating wire 3 with respect to the pair of heat-resistant insulating plates 2 and 2'can be easily and surely fixed only by hanging it from the outside into the cut grooves 9 and 9 ', Perhaps the winding work process can be greatly simplified, and even if the main heating wire 3 has a strip shape, no twist is generated in the main heating wire 3 and there is no possibility of loss of strength or breakage.

[Effects of the Invention] Since the present invention is configured as described above, it has the following effects.

That is, in the present invention, at the winding end portion of one heat-resistant insulating plate and the winding start portion of the other heat-resistant insulating plate, a groove cut inwardly obliquely inward with respect to the winding direction of each heating wire from the peripheral edge, respectively. Form and hang it from one heat-resistant insulating plate to the other heat-resistant insulating plate.Hang the heating wires in the grooves cut diagonally inward to hook the heating wires to the pair of heat-resistant insulating plates. Since the pair of heat-resistant insulating plates are joined by the heating wire into one flat plate, the pair of heat-resistant insulating plates are arranged in a plane and the heating wire is wound around one of the heat-resistant insulating plates. However, even if a flat plate-shaped heater panel is configured by winding the heating wire from the end of the winding to the beginning of the other heat insulating plate and winding the heating wire, At the winding end of the board and the winding start of the other heat resistant insulation board The heating wires can be securely hooked to the pair of heat-resistant insulating plates by simply hooking the heating wires into the grooves cut inwardly with respect to the winding direction of each heating wire. The hot wire receives tension in the winding direction and bites into the groove one more, and there is no risk of it coming off during the post-winding process of the heater panel. Shaped heater board.

[Brief description of drawings]

The drawings show an embodiment of a heater panel for an electric heater according to the present invention. Fig. 1 is a plan view of the whole with a part thereof broken away, and Fig. 2 is a perspective view of a main part thereof. The figure is an enlarged perspective view of the same as above. 1 ... Heater panel for electric heater, 2, 2 '... Pair of heat-resistant insulating plates, 3 ... Main heating wire, 4 ... Auxiliary heating wire, 9, 9' ... Winding of each main heating wire 3 from the periphery Groove formed by cutting inward toward the direction

Claims (1)

[Claims] 1. A pair of heat resistant insulating plates are arranged in a plane, and a heating wire is continuously wound on one of the heat resistant insulating plates from the winding start portion to the winding end portion, and the winding end portion Hang the heating wire towards the beginning of the heat-resistant insulating plate, and
In a flat plate-shaped heater panel, the heating wire is sequentially and continuously wound toward the winding end portion of the other heat-resistant insulating plate so that the winding directions are opposite to each other. Part and the beginning of winding of the other heat-resistant insulating plate, each groove cut inward from the peripheral edge to the winding direction of each heating wire is formed, and from one heat-resistant insulating plate to the other heat-resistant insulating plate The heating wire is hung in the groove cut inward diagonally inward, and the heating wire is hooked on the pair of heat-resistant insulating plates. A heater board for electric heaters that is connected in a board shape.