KR20030075848A - a field core unit of magnetic clutch, and method for manufacturing of a field core unit - Google Patents

Abstract

PURPOSE: A field core unit of an electronic clutch for a vehicle and a manufacturing method thereof are provided to prevent separation of resin from a coil in abnormally increasing temperature by linking the coil and the resin member with embedding the adsorbent in the resin member, and to insulate harmful electromagnetic waves from the coil by using active carbon as the adsorbent. CONSTITUTION: A field core unit of an electronic clutch in a vehicle is composed of a coil housing(12) opened at one side, and formed cylindrically and doubly; a bobbin(13) contained in the coil housing; and a coil(11) insulated by a resin member(14) and wound on the bobbin. An adsorbent(16) is embedded in the resin member for adsorbing the resin member. Expansion or crack of the resin member is prevented in abnormally increasing the temperature by linking the coil to the resin member with the adsorbent. Sudden acceleration is restricted by insulating harmful electromagnetic waves with using active carbon as the adsorbent.

Description

Field core unit of magnetic clutch for vehicle and method for manufacturing same {a field core unit of magnetic clutch, and method for manufacturing of a field core unit}

The present invention relates to a field core unit of an electronic clutch for a vehicle and a method of manufacturing the same, and more particularly, by embedding an adsorbent in a resin member to perform a crosslinking role between the coil and the resin member, thereby increasing the coil at abnormal temperature rise of the coil. The resin member can be prevented from being separated from the resin member, the volume of the resin member can be prevented from expanding, the cracking of the resin member is prevented from occurring, and activated carbon is used as an adsorbent embedded in the resin member. The present invention relates to a field core unit of a vehicle electromagnetic clutch and a method of manufacturing the same, which can block harmful electromagnetic waves generated in a coil.

In general, a compressor, which is a part of an air conditioner of an automobile, is a device that selectively receives power of an engine transmitted through a pulley by an intermittent action of an electronic clutch, compresses a refrigerant supplied from an evaporator, and sends the refrigerant to a condenser.

As shown in FIG. 1, the electromagnetic clutch transmitting power of the engine to the compressor is rotatably installed in the compressor (not shown) through the bearing 1 and inserted into the pulley 2. A field core unit 10 that is supported and generates suction magnetic flux in response to application of power; The rotor 4 of the pulley 2 is connected to the drive shaft (not shown) of the compressor by the hub 3 and by the suction magnetic flux generated by the coil 11 of the field core unit 10. It comprises a disk and hub assembly (20) for selectively adsorbing the power of the engine to the drive shaft of the compressor by being adsorbed on the friction surface 5a of the rotor or separated from the friction surface (5a) of the rotor. Looking at the prior art for the field core unit of the electronic clutch configuration in more detail as follows.

As shown in the drawing, the field core unit 10 has a bobbin 13 accommodated in a coil housing 12 made of a double cylindrical metal material having a cross-section of a letter C. The bobbin 13 has a coil. (11) is wound in an insulated state by the resin member (14).

The resin member 14 is molded by injecting a resin material which can be molded at a relatively low temperature by epoxy resin or unsaturated polyester into the inner space of the coil housing 12.

However, the above-described prior art has the following problems.

First, in the prior art, since the resin member 14 made of epoxy resin or unsaturated polyester injected into the inner space of the coil housing 12 has incompatible characteristics with the coil 11, the temperature of the coil 11 is reduced. When the temperature rises above a certain temperature, there is a problem that the separation from the volume and the expansion of the volume occurs, and in a severe case, a crack occurs in the resin member 14.

Second, harmful electromagnetic waves are generated in the coil 11 during operation of the electromagnetic clutch, and there is a problem in that the conventional field core unit cannot absorb or block the generated harmful electromagnetic waves.

An object of the present invention was devised to solve the above problems, by embedding the adsorbent in the resin member to act as a crosslinking between the coil and the resin member, thereby separating the resin member from the coil at abnormal temperature rise of the coil The present invention relates to a field core unit of an electronic clutch for a vehicle and a method of manufacturing the same.

Another object of the present invention is to embed an adsorbent in the resin member to act as a bridge between the coil and the resin member, thereby preventing the expansion of the volume of the resin member in the abnormal temperature rise of the coil electronic vehicle clutch The field core unit of the present invention and a method for manufacturing the same.

Another object of the present invention is to embed the adsorbent in the resin member to act as a cross-linking between the coil and the resin member, so that the field core of the vehicle electronic clutch so that the crack phenomenon of the resin member does not occur when the abnormal temperature rise of the coil It relates to a unit and a manufacturing method thereof.

Still another object of the present invention relates to a field core unit of a vehicle electromagnetic clutch and a method of manufacturing the same, which can block harmful electromagnetic waves generated in a coil by using activated carbon as an adsorbent embedded in a resin member.

1 is an assembled cross-sectional view of a field core unit of a vehicle electronic clutch according to the prior art;

2 is an assembled cross-sectional view of a field core unit of an electronic clutch for a vehicle according to the present invention;

3 is a manufacturing flow chart of the present invention.

<Description of Symbols for Main Parts of Drawings>

111: coil

12: coil housing

13: bobbin

14: resin member

16: adsorbent

The present invention for achieving the above object is a vehicle electronics comprising a double cylindrical coil housing with one side open, a bobbin accommodated inside the coil housing, and a coil insulated by a resin member and wound around the bobbin. In a field core unit of a clutch, an adsorbent for adsorbing this is embedded in the resin member.

In order to achieve the above object, the present invention provides a field core unit manufacturing method for an electronic clutch for a vehicle comprising a process of injecting a resin member between a coil housing and a bobbin after inserting a coil wound bobbin inside the coil housing. Before injecting the resin member, an adsorbent capable of adsorbing the resin member is injected into a space between the coil housing and the bobbin.

Hereinafter, the field core unit of the electronic clutch for a vehicle according to the present invention will be described in detail. For convenience of description, the description of the disk and hub assembly 20 described in the prior art will not be mentioned, and the same reference numerals are used for parts that overlap with those used in the prior art.

2 is a cross-sectional view of an assembly of a field core unit of an electronic clutch for a vehicle according to the present invention, and FIG. 3 is a manufacturing flowchart of the present invention.

As shown in the figure, one side is opened in a double cylinder having a U-shaped cross-section and a metal coil housing 12, a bobbin 13 accommodated inside the coil housing 12, epoxy or unsaturated poly It is applied to the field core unit of the vehicle electromagnetic clutch including the coil 11 wound by the bobbin 13 and insulated by the resin member 14 made of an ester material. The adsorbent 16 for adsorption is inherent.

It is preferable that the adsorbent 16 uses activated carbon made of carbon as the basic component, and the activated carbon has a particle size of 0.01 mm to 1 mm.

Referring to the manufacturing method and operation of the field core unit according to the present invention configured as described above are as follows.

2 and 3, first, the coil 11 is wound around the bobbin 13 fastened to a jig (not shown). (S1)

Thereafter, after the bobbin 13 is separated from the jig (S2), the bobbin 13 is inserted into the coil housing 12. (S3)

Next, a process of injecting and treating the adsorbent 16 between the coil housing 12 and the bobbin 13 is performed.

Herein, in the present invention, activated carbon was used as the adsorbent 16, and particles of 0.01 mm to 1 mm were used in the activated carbon.

Finally, the resin member 14 is injected between the coil housing 12 and the bobbin 13 so that the pre-injected adsorbent 16 is embedded in the resin member 14.

In the field core unit 10 manufactured according to the above method, since the adsorbent 16 plays a role of crosslinking between the coil 11 and the resin member 14, when the temperature of the coil is raised to a certain value or abnormally, It serves to hold the resin member from being separated from the coil.

In addition, since the resin member is not separated from the coil, the volume of the resin member is not expanded or cracked as in the prior art.

In addition, since activated carbon is used as an adsorbent, harmful electromagnetic waves generated in coils among harmful electromagnetic waves, which is one of the causes of sudden oscillation, which are one of malfunctions of automatic transmission vehicles, can be blocked beforehand, thus contributing to the above-mentioned problem of vehicle sudden start. .

As described above, according to the field core unit of the present invention and a method for manufacturing the same, the resin member is separated from the coil when an abnormal temperature rise of the coil occurs by embedding an adsorbent in the resin member to act as a bridge between the coil and the resin member. It is possible to prevent the phenomenon, and to prevent the expansion of the volume of the resin member when the abnormal temperature rise of the coil. When the abnormal temperature rise of the coil does not cause a crack phenomenon of the resin member, and by using activated carbon as an adsorbent inherent in the resin member, it is possible to block harmful electromagnetic waves generated in the coil in advance.

Claims (4)

The coil housing 12 having one side open, the bobbin 13 accommodated in the coil housing 12, and the coil wound around the bobbin 13 by being insulated by the resin member 14 ( In the field core unit of the vehicle electronic clutch comprising a) The field member of the electronic clutch of a vehicle, characterized in that the resin member (14) has an adsorbent (16) for adsorbing it. A vehicle electronic clutch comprising a process of injecting a resin member 14 between the coil housing 12 and the bobbin 13 after inserting the bobbin 13 wound around the coil 11 in the coil housing 12. In the field core unit manufacturing method of Before the resin member 14 is injected, the field core of the electronic clutch of a vehicle, wherein an adsorbent 16 capable of adsorbing the resin member is injected into a space between the coil housing 12 and the bobbin 13. Unit manufacturing method. The method of claim 2, The adsorbent (16) is a field core unit manufacturing method for an electronic clutch for a vehicle, characterized in that using activated carbon. The method of claim 2, The activated carbon is a field core unit manufacturing method for an electronic clutch for a vehicle, characterized in that the particles are used 0.01mm ~ 1mm.