JP4053166B2 - Induction heating roller device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lead connecting device for an induction heating roller.
[0002]
[Prior art]
An induction heating roller having a magnetic flux generation mechanism constituted by an induction coil or the like inside a rotating roller body is already well known. The induction coil is connected to an external AC power source, and is excited by this to generate an alternating magnetic flux, and the roller body generates heat.
[0003]
For the induction coil used in such a configuration, an aluminum electric wire that is normally insulated with anodized is used. This type of aluminum electric wire has excellent heat resistance, is lightweight, and has an advantage that the induction coil can be manufactured in a small size since the insulating coating film is thin. A lead wire made of a copper wire is used to connect the induction coil formed of such a wire to an external AC power source. Conventionally, a stranded wire is used for a copper wire as a lead wire for this connection, and a connection sleeve is usually used for the connection.
[0004]
FIG. 3 shows a conventional connecting device, in which K is the above-described aluminum electric wire, A is a lead wire made of a copper twisted wire, B is its insulating coating, and C is a connecting sleeve made of copper. The lead wire A is inserted from one end portion of the connection sleeve C, and is crimped at the insertion portion. The aluminum wire K is also inserted from the other end of the connection sleeve C, and is crimped at the insertion portion.
[0005]
In this case, due to the fact that electric corrosion is likely to occur at the crimping portion between the aluminum wire K and the copper of the connection sleeve C, and the aluminum wire K is soft, sufficient connection cannot be achieved only by crimping. For this reason, the crimping of the aluminum wire K to the connection sleeve C is semi-crimped, and the connection part is aluminum soldered. D shows the solder part.
[0006]
However, with such a connection configuration, the connection sleeve C must be prepared because of the use of the connection sleeve C, and the connection portion becomes thick due to the connection sleeve C. In addition to this, there is a disadvantage that the work of aluminum solder is required, and the number of connecting steps is increased.
[0007]
[Problems to be solved by the invention]
It is an object of the present invention to simplify the configuration for connecting the lead wire to the aluminum electric wire used for the induction coil and reduce the number of connecting steps.
[0008]
[Means for Solving the Problems]
The present invention is characterized in that using a copper wire composed of a single wire, and the end faces cut at right angles that, with the match and the end surface which is perpendicular cut of the aluminum electric wire used in the induction coil connected to a lead wire And
[0009]
Since the aluminum wire and the lead wire is connected with the match, there is no fear of occurrence of electrolytic corrosion at the connection location. Since the conventional connection sleeve is not required for the connection, the connection configuration is simplified, and aluminum solder is also unnecessary, so that the number of connection steps is reduced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows a cantilever induction heating roller device as an example. A magnetic flux generation mechanism 4 having an induction coil 3 supported by a fixed platen 2 is installed inside the roller body 1 to be rotated, and extends in the axial direction of the roller body 1 inside the peripheral wall of the roller body 1. A plurality of holes are provided to form a jacket chamber 5 in which a gas-liquid two-phase heat medium is sealed.
[0011]
A shaft 6 is connected to the roller body 1 and is rotatably supported by a bearing 8 of a bearing case 7. A fixed platen 2 is fixed to the bearing case 8 with screws 9, and the fixed platen 2 is disposed so as to cover the opening surface of the roller body 1 so as to cover it. The configuration shown in the figure shows an example in which an iron core is not used, but this is installed if necessary. The induction coil 3 is wound around the outer periphery of the iron core.
[0012]
As described above, the induction coil 3 is formed by winding the aluminum wire 10 covered with anodized. Reference numeral 11 denotes a lead wire connected to an aluminum electric wire constituting the induction coil 3.
[0013]
A copper wire made of a single wire is used as the lead wire 11 according to the present invention. Of course, this copper wire is covered with insulation. Then Upon connecting the aluminum electric wire 10 and the lead wire 11, to connect by abutting the end face each other of the two lines 10, 11 which is perpendicularly cut as shown in FIG. 1 2 shows a butt connection part.
[0014]
According to the connection in such a manner, both wires 10 and 11 can be connected between the aluminum wire 10 and the copper wire as the lead wire 11 without causing electrolytic corrosion. Therefore, it is not necessary to apply aluminum solder as in the case of using a connection sleeve as in the prior art. Since no connection sleeve is used, the diameter of the connection portion does not increase, and a connection process such as crimping or semi-crimping is not necessary.
[0015]
【The invention's effect】
As described above, according to the present invention, when connecting a lead wire for leading this to the aluminum wire constituting the induction coil, a single-wire copper wire is used as the lead wire. since so to Tsukiawashi each end surface which is perpendicular cut of the aluminum electric wire to connect, it is possible to connect without fear of occurrence of electrolytic corrosion at the connection points, using a coupling sleeve in a conventional manner Compared to the case, there is an effect that the aluminum solder for coping with the occurrence of electric corrosion becomes unnecessary, and the disadvantage that the connection portion becomes thicker by using the connection sleeve can be solved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
FIG. 2 is a sectional view of an induction heating roller.
FIG. 3 is a front view showing a conventional configuration.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roller body 3 Induction coil 4 Magnetic flux generation mechanism 10 Aluminum electric wire 11 Lead wire 12 Butt connection part

Claims (1)

In induction heating low la equipment formed by connecting the lead wire for leading the induction coil constituting a magnetic flux generation mechanism of the induction heating roller to the outside, the inductive coil by winding an aluminum wire coated with alumite together constituting the lead wire and solid wire of copper wires, the aluminum induction heating rows La of perpendicularly cut end surface and the with the match and the end surface which is perpendicular cut copper wire leads formed by connecting the wire equipment.

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