JPH041716Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a wound type capacitor which is immersed in a liquid or powdered insulating material and formed into a flat shape, and then coated with an insulating material. Concerning capacitors.

(Prior art) Conventionally, wound-wound capacitors, which are coated with insulating material by the above-mentioned dipping method, have generally been used for small-sized capacitors, and have also been used for large-sized capacitors using sturdy lead wires. It has been adopted.

For larger capacitors, instead of using the dipping method, store them in a case, etc., or wrap an insulating tape wider than the capacitor roll and fill the recesses on both ends with synthetic resin such as epoxy resin. A method is adopted in which the wound body is sealed. The reason for this is that according to the immersion method, when the lead wire is fixed to a holder and multiple capacitor windings are immersed in the insulating material at once through this holder, the capacitor windings are supported by the lead wire. Therefore, if the weight is large depending on the shape, there is a risk that the connection between the lead wire and the electrode will be incomplete or the capacitor winding will fall off.As a countermeasure, the lead wire This is because increasing the thickness and structurally strengthening the joint between the lead wire and the electrode would be disadvantageous in terms of handling and cost.

(Problems to be solved) This invention solves the problem that even if the immersion method is used for relatively large wound capacitors, the connection between the lead wire and the electrode may become incomplete, or the wound body may fall off. The object is to obtain a wound type capacitor which is easy to handle and inexpensive.

(Means for Solving the Problems) The present invention provides a wound type capacitor in which a capacitor wound body is formed into a flat shape by immersing it in a liquid or powdered insulating material and is coated with the insulating material.
A member is inserted into the center space of the capacitor winding body, is sandwiched and fixed between the capacitor winding bodies by forming the capacitor winding body into a flat shape, and has at least one end protruding from a side surface of the capacitor winding body. , the member is characterized in that the member is a capacitor-wound suspension member that suspends the capacitor-wound body when the capacitor-wound body is immersed in the insulating material.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In order to produce a plastic film capacitor, as shown in FIG. 1A, a plastic film 1 having an electrode is first wound into a cylindrical shape with a lead wire 2 connected to the electrode inserted, according to the usual manufacturing method. A capacitor wound body 3 is obtained. Next, one end of a plate-shaped piece 5 made of, for example, polyester resin is inserted into the center space 4 with the other end protruding from the side surface of the wound body 3, and the one end is attached to the wound body 3 with adhesive. After fixing the
This rolled body 3 is formed into a flat shape as shown in FIG.
This plate-like piece 5 is a member for suspending the capacitor winding body, and is strong enough to support the weight of the capacitor winding body 3. The plate-like piece 5 may not be fixed to the winding body 3 with an adhesive, but may be fixed with scissors between the flattened winding body itself.

A plurality of capacitor windings 3 having this structure are suspended by fixing the protruding portion of the plate-like piece 5 to a jig 6 with, for example, tape 7 as shown in FIG. The outer periphery of the capacitor wound body 3 is coated with a sheath 8 as shown in the third figure.

When the capacitor with the exterior 8 shown in FIG. 3 is placed in a case 9 of an electronic device together with other electronic components as shown in FIG. 5 to the protrusion 10 in the case 9, the capacitor can be installed at a predetermined position in the case 9, and a resin layer of the required thickness can be secured around the capacitor.

If the plate-like pieces 5 are made to protrude from both sides of the capacitor winding body 3, the capacitor can be positioned more accurately. When there is no need for positioning, it may be cut from the root after applying the exterior, or it may be left in place if there is no problem.

In the example shown in FIGS. 4A and 4B, a plastic film 11 wider than the width of the capacitor winding 3 is wound around the winding core an appropriate number of times to a strength sufficient to support the capacitor winding 3, and then the capacitor is A capacitor wound body 3 was produced by winding the plastic film 1 according to a conventional manufacturing method and flattening it by hot pressing as shown in FIG. 4B.

The roll of wide plastic film 11 flattened by hot pressing is a member for hanging the capacitor roll.

This example has higher productivity than the previous example.

(Effects of the invention) When using the invention, even when a relatively large wound capacitor is coated with an insulating material by dipping, the joint between the lead wire and the electrode becomes incomplete or separates. In addition, there is no need to make the lead wire and the joint between the lead wire and the electrode strong so that such inconvenience does not occur, and it is inexpensive and easy to handle. Since the capacitor winding suspension member can be fixed to the capacitor winding body during the manufacturing process of the capacitor winding body formed into a flat shape, the number of manufacturing steps is reduced and the member can be easily fixed to the capacitor winding body. It is. Furthermore, when the capacitor is placed in a case of an electronic device along with other electronic components and resin is injected into the case, the capacitor winding body hanging member can be used for positioning within the case.

[Brief explanation of drawings]

Figures 1A and B and Figure 2 are perspective views showing the manufacturing process of an embodiment of the present invention, Figure 3 is a perspective view of an embodiment of the invention, and Figures 4A and B are views of other embodiments of the invention. FIG. 5 is a perspective view showing the manufacturing process of the embodiment. FIG. 5 is a perspective view showing the capacitor of the present invention installed in the case of an electronic device. 1...Plastic film, 3...Capacitor winding body, 5...Plate piece, 8...Exterior.

Claims (1)

[Scope of utility model registration request] In a wound type capacitor in which a capacitor winding body is formed into a flat shape by immersing it in a liquid or powder insulating material and is coated with the insulating material, the capacitor winding body is inserted into the center space of the capacitor winding body. A member is formed into a flat shape so as to be sandwiched and fixed between the capacitor windings, and at least one end thereof protrudes from the side surface of the capacitor windings, and the member is configured to immerse the capacitor windings in the insulating material. A wound capacitor characterized in that it is a member for hanging a capacitor winding when the capacitor winding is suspended.