JPH0729830U - Aluminum electrolytic capacitor - Google Patents

Abstract

(57) [Abstract] [Purpose] A safer aluminum that prevents the risk of reverse voltage application during set mounting caused by reverse processing of the cathode display band of the exterior sleeve in the capacitor manufacturing stage of aluminum electrolytic capacitors. Realize an electrolytic capacitor. In an outer sleeve of an aluminum electrolytic capacitor having a polarity, a magnetic treatment is applied to a part of the cathode display band of the sleeve, a back surface part corresponding to the cathode display band printing, or a case part of the capacitor. The feature is that a magnetic tape is attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an aluminum electrolytic capacitor, which is intended to prevent reverse polarity mounting when mounting a set by attaching a magnetic tape to an exterior sleeve or the case of the capacitor. is there.

[0002]

[Prior art]

 In recent years, the safety of aluminum electrolytic capacitors has been required more than ever before. This is because aluminum electrolytic capacitors, which had been used only for general consumers until now, are now used in the field of industrial equipment such as switching power supplies and inverter circuits, and they are becoming widespread in general households as well as the miniaturization of sets. As a result, aluminum electrolytic capacitors are becoming more compact, and safety is becoming more stringent. When a polar electronic component such as this aluminum electrolytic capacitor is reversely mounted, the gas generated from the electrodes may increase the internal pressure of the capacitor, resulting in heat generation or ignition.

Conventionally, aluminum electrolytic capacitors have generally been provided with a cathode display band on the exterior sleeve by printing or the like to indicate that it is a cathode external electrode terminal. If the processing of the exterior sleeve is reversed at the stage of manufacturing the capacitor, that is, if the reverse polarity of the external sleeve leaks to the market and is mounted on the set and energized in this state, it is the reverse mounting of the capacitor. In some cases, the gas generated from the electrodes raises the internal pressure of the capacitor, resulting in heat generation and ignition. In some cases, there is even a short circuit that causes ignition and combustion.

On the other hand, studies have been made to prevent the reverse polarity of the exterior sleeve in the manufacturing stage of the aluminum electrolytic capacitor, but in most cases, a method of detecting and detecting the polarity by an optical sensor is generally considered. However, in these methods, there are various combinations of external sleeve colors and printing colors depending on the type of aluminum electrolytic capacitor, and it is necessary to sense the cathode display band, so the optical sensor performs its function sufficiently. Is in a difficult situation. In addition, when actually manufacturing capacitors, it is necessary to make fine adjustments to the optical sensor for each lot, which not only complicates the process but also makes the detection accuracy of the reverse polarity product very insufficient. There was a drawback that it would end up.

[0005]

[Problems to be solved by the device]

 The problem to be solved is to realize an aluminum electrolytic capacitor which surely prevents the reverse polarity processing of the exterior sleeve at the stage of manufacturing the capacitor so that a factor causing an overcurrent such as reverse voltage application is not applied to the aluminum electrolytic capacitor. In addition, it is an aluminum electrolytic capacitor that is easy to introduce into the process.

[0006]

[Means for Solving the Problems]

 The present invention was found as a result of various studies to solve the above problems. The essence of the present invention is that the cathode display band of the exterior sleeve is sleeved to the external electrode terminal of the cathode to form a sleeve, and at the time of checking the polarity, a part of the cathode display band or the case and the exterior sleeve. A magnetic tape is attached between the cables, and this can be detected by a magnetic sensor so that the reverse polarity can be reliably detected. That is, in the exterior sleeve of an aluminum electrolytic capacitor having polarity, a magnetic treatment is applied to a part of the cathode display band of the sleeve, a back surface part corresponding to the cathode display band printing, or a case part corresponding to the cathode. This is a method for manufacturing an aluminum electrolytic capacitor, characterized in that the applied magnetic tape is attached.

[0007]

[Action]

 The conventional optical sensor method may not be surely detected depending on the situation due to the contrast when the negative sensor is detected by the optical sensor due to the combination of the exterior sleeve color and the print color. In addition, a delicate contrast adjustment must be performed every lot change, which cannot be said to be reliable.However, according to the method of the present invention, if magnetism is sensed without operating the sensor setting every lot change, it is certain. Detect and detect. Also, unlike the conventional optical sensor method, it is not affected by the print color or print state on the exterior sleeve. Furthermore, since a magnetic tape is only attached to a part of the cathode display band, it may be a capacitor for audio applications.

[0008]

【Example】

 FIG. 1 shows a concrete embodiment of the present invention. Fig. 1 shows an aluminum electrolytic capacitor provided with an exterior sleeve, which has a magnetic tape attached to a part of the cathode display band or between the case and the exterior sleeve and is detected by a magnetic sensor. Is. Reference numeral 1 is an exterior sleeve made of a material such as vinyl chloride, and reference numeral 2 is a surface of which a predetermined matter is printed. Reference numeral 3 is a cathode display band included in 2. 4 is a magnetic tape portion applied to a part of 3. Reference numeral 5 is a magnetic sensor for sensing the magnetically processed portion.

[0009]

[Effect of device]

 The aluminum electrolytic capacitor manufactured according to the present invention had no sleeve reverse defects in 10 million pieces. Also, it can be confirmed that the magnetic sensor can be detected and detected reliably in the capacitor manufacturing process, and the industrial and practical value of the present invention is great.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of polarity detection of an aluminum electrolytic capacitor of the present invention.

[Explanation of symbols]

 1 Exterior sleeve 2 Predetermined matter print display 3 Cathode display band 4 Magnetic tape part 5 Magnetic sensor

Claims (1)

[Scope of utility model registration request] 1. An exterior sleeve of a polar aluminum electrolytic capacitor, wherein a part of a cathode display band of the sleeve, a back surface part corresponding to the cathode display band printing, or a case part corresponding to the cathode is formed. Aluminum electrolytic capacitor characterized by attaching magnetic tape that has been magnetically treated