KR20120028469A - Manufacturing method for field core of magnetic clutch - Google Patents

Abstract

PURPOSE: A method for manufacturing a field core of an electronic clutch for a compressor is provided to manufacture a field core and a flange in one body with a transfer method, thereby reducing working hours. CONSTITUTION: A method for manufacturing a field core of an electronic clutch for a compressor comprises the steps of: preparing a plate-shaped material, pressing the center of the plate-shaped material upward to form an inner ring part(210), bending the material beside the inner ring part toward the inner ring part, horizontally bending the bent material to form a connecting part(230), bending the horizontally bent material downward to form an outer ring part(220), and boring a through hole in the center of the inner ring part to form a flange part(240).

Description

Manufacturing method of field core of electronic clutch for compressor {MANUFACTURING METHOD FOR FIELD CORE OF MAGNETIC CLUTCH}

The present invention relates to a field core manufacturing method of an electromagnetic clutch for a compressor, and more particularly, to a field core manufacturing method of an electromagnetic clutch for a compressor in which the field core and the flange are integrally formed by a transfer method.

A compressor constituting an air conditioner of a vehicle is a device that compresses a refrigerant supplied from an evaporator and drives it to a condenser while driving by power of an engine, and is installed to selectively receive and drive power of an engine by an intermittent action of an electronic clutch.

Electronic clutch 100 for selectively transmitting the power of the engine to the compressor depending on whether the power is applied, as shown in Figure 1, is rotatably installed in the bearing 111 interposed in the housing 110 of the compressor A pulley 120 connected to the crankshaft of the engine and a driving belt (not shown) and having a friction surface 121 on a side thereof, and a field coil 130 built in the pulley 120 and generating suction magnetic flux by applying power. Field core 131 accommodated therein, a flange 132 installed at the field core 131 and fixed to the housing 110 of the compressor, and a hub 141 coupled to the drive shaft 140 of the compressor; And, the inner ring 150 is coupled to the hub 141 and the outer ring 170 is coupled by the inner ring 150 and the rubber 160, fixed by the outer ring 170 and the rivet 171 and In addition, the field coil 130 is absorbed by the friction surface 121 of the pulley 120 by the suction magnetic flux generated, The output is configured to include a disc 180 such as that transmitted to the driving shaft 140 of the compressor.

According to the configuration as described above, when power is applied to the field coil 130, the pulley 120 is rotated by a belt connected to the crankshaft by the disk 180 due to the magnetic flux induced by the magnetic induction of the field coil 130 The engine is transferred to the pulley 120 through the belt by moving toward the friction surface 181 of the disk 180 is attracted to the friction surface 121 of the pulley 120 and the pulley 120 and the disk 180 is bound. The power of the power is transmitted to the inner ring 150 connected to the rubber 160 via the disk 180 and the outer ring 170, and then to the drive shaft 140 of the compressor through the hub 141.

When the power to the field coil 130 is cut off, the disk 180 is separated from the friction surface 121 of the pulley 120 by the elastic repulsive force of the rubber 160, so that the engine power is applied to the drive shaft 140 of the compressor. Stop delivery.

In this way, the electronic clutch 100 of the compressor is to transmit or block the power of the engine to the compressor depending on whether the power.

Among the components of the electronic clutch 100 configured as described above, as shown in FIG. 2, the field core 131 is formed with an inner diameter ring 131a and a larger diameter than the inner diameter ring 131a, thereby forming an inner diameter ring ( It consists of an outer diameter ring 131b disposed to be spaced apart from the 131a, and a connection ring 131c interconnecting one end of the inner diameter ring 131a and the outer diameter ring 131b, and the flange 132 on the connection ring 131c. ) Is installed.

Since the conventional field core 131 and the flange 132 are typically manufactured by a forging die, respectively, the field core 131 and the flange 132 are mutually coupled by welding, and thus, in manufacturing the same, There is a problem in that the cost of work time and labor costs increases accordingly.

In addition, when the size and shape of the field core 131 and the flange 132 are various shapes, since the molds must be manufactured separately for each shape, there is a problem that the manufacturing cost increases.

In addition, since the field core 131 and the flange 132 are mutually coupled by welding, there is a problem in that the field core 131 and the flange 132 are separated by poor welding.

The present invention is to solve the above problems, it is an object of the present invention to provide a field core manufacturing method of the electromagnetic clutch for a compressor to form the field core and the flange integrally by the transfer method.

According to the present invention, the step of preparing a plate-shaped material, pressing the plate-shaped material in the upper direction to form an inner diameter ring portion, and bending the side material of the inner diameter ring portion toward the inner diameter ring portion; And bending the material bent in the inner ring portion in a horizontal direction to form a connection part, and bending the material bent in the horizontal direction in a downward direction to form an outer diameter ring part, and through the center of the inner diameter ring part. It is achieved by the step of forming the flange portion by drilling.

In addition, the method may further include attaching a reinforcing ring part to the connection part.

As a result, since the field core and the flange are integrally manufactured by the transfer method, the work process is reduced, the cost of work time and labor costs are reduced, and the field core and the flange can be molded regardless of the size and the appearance. The cost can be reduced, and the welding process of the field core and the flange is eliminated, so that a defect due to welding is not generated.

1 is a cross-sectional view of an electromagnetic clutch of a general compressor.
2 is a combined perspective view of a conventional field core and a flange.
3 is an exploded perspective view of a field core of the electromagnetic clutch for a compressor according to the present invention.
4 is a cross-sectional view of a field core of the electromagnetic clutch for a compressor according to the present invention.
5 is a diagram illustrating a manufacturing process of the field core of the electronic clutch for a compressor according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings.

The accompanying drawings show exemplary forms of the present invention, which are provided to explain the present invention in more detail, and the technical scope of the present invention is not limited thereto.

In addition, in the embodiment of the present invention, the same components as those in the prior art will be described using reference numerals in the prior art drawings.

The field core 200 of the electronic clutch for a compressor according to the present invention, as shown in FIGS. 3 and 4, the inner diameter ring portion 210 and the outer diameter ring portion 220 disposed to be spaced apart from the inner diameter ring portion 210. The connection portion 230 connecting one end of the inner diameter ring portion 210 and the outer diameter ring portion 220 and the flange portion 240 formed integrally with the inner diameter ring portion 210 and extending inwardly of the inner diameter ring portion 210. It is composed.

First, the inner diameter ring portion 210 is formed in a ring shape having a predetermined thickness.

In addition, the outer diameter ring part 220 is a ring having a predetermined thickness formed to have a diameter larger than the diameter of the inner diameter ring part 210, and is arranged to be spaced apart from the inner diameter ring part 210 by a predetermined interval to form a field coil receiving space therebetween. do.

On the other hand, the connecting portion 230 is formed to interconnect one end of the inner diameter ring portion 210 and the outer diameter ring portion 220.

That is, the connecting portion 230 is formed to close one side of the field coil receiving space formed by the inner diameter ring portion 210 and the outer diameter ring portion 220.

In addition, the flange portion 240 is formed integrally with the inner diameter ring portion 210, is formed extending to a predetermined length to be bent toward the center side of the inner diameter ring portion 210 is coupled to the compressor housing 110.

In this case, the bent length of the flange portion 240 may be formed in various lengths according to the shape of the compressor housing 110.

In addition, since the position at which the compressor housing 110 and the flange portion 240 are coupled to each other is located at a rear side (left direction in FIG. 3) than the connection portion 230, the flange portion 240 is connected to the connection portion 230. The inner diameter ring portion 210 may be further formed to protrude a predetermined length toward the flange portion 240 so as to be spaced apart from the rear side.

Meanwhile, the field core 200 of the electronic clutch for the compressor according to the present invention may further include a reinforcing ring part 250 attached to the inner surface of the connection part 230.

The reinforcing ring part 250 is a ring having a predetermined thickness formed to correspond to the connection part 230, and is attached to an inner surface of the connection part 230 by welding or the like.

The reinforcement ring part 250 is attached to the case where the thickness of the connection part 230 needs to be reinforced due to function or performance and other reasons after manufacturing the field core 200.

For example, when the position of the field coil 130 is to be installed to be more biased toward the pulley 120 side, this can be achieved by further thickening the thickness of the connection portion 230 using the reinforcing ring 250.

The inner diameter ring portion 210, the outer diameter ring portion 220, the connection portion 230, and the flange portion 240 configured as described above are integrally manufactured by a transfer method.

Hereinafter, a manufacturing process of the field core 200 of the electromagnetic clutch for a compressor according to the present invention will be described with reference to FIG. 5.

The general transfer method is a kind of processing automation which has the advantage of simultaneously performing a plurality of processes. The transfer mold for the transfer method is provided with a conveying device for transferring an intermediate material being processed into an independent process and a process. A plurality of molds that perform independent processing are sequentially arranged, and then the processing is continuously performed while transferring the intermediate material to the respective molds using a conveying apparatus.

The transfer mold as described above can produce a molded article of various shapes according to the design of each independent mold, the detailed description of the mold for producing the present invention will be omitted.

First, the plate-shaped material for forming the field core 200 of the electronic clutch for a compressor according to the present invention is prepared (see FIG. 5A), and the inner side ring portion 210 is formed by pressing the center side of the plate-shaped material upward. (See Figure 5b)

After that, the inner ring portion 210 is molded and the remaining side material is bent to the inner ring portion 210 side. In other words, the material remaining on the side is folded upward (see FIG. 5C).

After the above process, the material bent toward the inner ring part 210 is bent again in the horizontal direction to form the connecting portion 230 (see FIG. 5D). At this time, in order to form the protrusion 241, the bending is bent in the horizontal direction. The dot is formed at a position lower than the uppermost end of the inner diameter ring portion 210.

Next, the outer ring portion 220 is formed by bending the material bent in the horizontal direction except the material forming the connecting portion 230 in the lower direction (see FIG. 5E).

Thereafter, the flange 240 is formed by drilling a through hole in the upper surface of the inner diameter ring portion 210, thereby integrally molding the field core 200 of the electromagnetic clutch for compressor according to the present invention.

At this time, when the attachment of the reinforcing ring unit 250 is required, the reinforcing ring unit 250 may be attached by adding a separate process.

Since the field core of the electromagnetic clutch for a compressor according to the present invention manufactured as described above integrally manufactures the field core and the flange by a transfer method, the work process is reduced and the cost such as working time and labor cost is reduced, Regardless of the size and shape of the core and flange can be molded can reduce the manufacturing cost, there is an effect that the defect caused by the welding does not occur as the welding process of the field core and the flange is eliminated.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be understood that various changes and modifications may be made without departing from the scope of the present invention.

100: electronic clutch 110: housing
111: bearing 120: pulley
121: friction surface 130: field coil
131: field core 131a: inner ring
131b: outer ring 131c: connection ring
132: flange 140: drive shaft
141: hub 150: inner ring
160: rubber 170: outer ring
171: rivet 180: disk
200: field core 210: inner ring portion
220: outer ring portion 230: connection portion
240: flange portion 241: protrusion
250: reinforcing ring

Claims (2)

(a) preparing a plate material;
(b) pressing the plate-shaped material toward the upper side to form an inner diameter ring part 210;
(c) bending the side material of the inner ring portion 210 toward the inner ring portion 210;
(d) bending the material bent toward the inner ring portion 210 in a horizontal direction to form a connection portion 230;
(e) forming the outer diameter ring part 220 by bending the material bent in the horizontal direction in a lower direction;
(F) a method of manufacturing a field core of the electromagnetic clutch for a compressor, comprising the step of forming a flange portion 240 by drilling a through-hole in the center side of the inner ring portion (210). The method of claim 2,
After the step (f),
Method for manufacturing a field core of the electronic clutch for a compressor, characterized in that it further comprises the step of attaching the reinforcing ring portion (250) to the connection portion (230).

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