JPH073629Y2 - Capacitor element block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a capacitor element block which is constructed by assembling a plurality of capacitor elements.

[Conventional technology]

FIG. 4 is a side view showing a conventional capacitor element block of this type. In the figure, (1) is a capacitor element formed by winding a predetermined amount of a metallized film, (2) is an electrode lead formed on one end face of the capacitor element (1), and the other of the capacitor element (1) is Electrode leads (2) of opposite polarity are formed on the end faces. Reference numeral (3) is a connection conductor for connecting the electrode lead (2) of each capacitor element (1) by brazing or soldering and drawing it to a terminal (not shown).

In this way, all the capacitor elements (1) are electrically connected in parallel. That is, what is shown in FIG. 4 is generally applied to a so-called low voltage capacitor of 200 to 400 V class which can be dealt with by the number of series elements 1. In this case, the connecting conductor (3) should have an appropriate rigidity,
Further, for example, by fixing the root of the electrode lead (2) directly to the connecting conductor (3), a plurality of capacitor elements (1) are integrally assembled with the connecting conductor (3) as a supporting material, and moreover, a fixed amount. Can be held in form. If the connecting conductor (3) is directly fixed to the electrode portion of the capacitor element (1) by soldering or the like without using the electrode lead (2), it can be more firmly held.

However, if the voltage specification of the capacitor becomes higher than the so-called high voltage of, for example, 3 to 6 KV class, the required number of elements in series increases, and the structure shown in FIG. 4 cannot be adopted.

FIG. 5 is a partial cross-sectional view showing the structure of the capacitor element (1) when it is necessary to connect the capacitor elements (1) assembled as a block to each other in series. In the figure, (4) shows that a part of the dielectric film extends outwardly from the end face of the capacitor element (1) by a predetermined dimension, and a dielectric film is formed on the outer circumference of both ends of the capacitor element (1) several times to a dozen or more. As shown in the figure, the tip of the extended portion is bent inward with an insulation barrier formed by winding, and a predetermined insulation leakage length is obtained for the voltage applied between the adjacent capacitor elements (1). Have secured. The electrode lead (2) is led out from the opening of the insulating barrier (4) and connected to the electrode lead (2) of the adjacent capacitor element (1).

[Problems to be solved by the device]

Since the conventional capacitor element block is configured as described above, when individual capacitor elements (1) that form a block need to be connected in series because the voltage as a capacitor is high, the individual capacitor element (1) Since it is necessary to insulatively reinforce the end portion of the with an insulating barrier (4), the work becomes extremely complicated accordingly. Further, since the adjacent capacitor elements (1) are individually connected, there is provided a structure as shown in FIG. 4 in which the common connecting conductor (3) is used as a supporting member to integrally hold the entire block. Cannot be adopted.
Therefore, the whole capacitor element (1) stacked in the form shown in FIG. 5 must be held tightly with an insulating tape or the like, and the work variation at the time of tight binding is directly connected to the variation of the outer shape of the block. The holding condition of the capacitor element (1) is also non-uniform, and there is a problem that an excessive force is applied to the electrode lead (2) and the quality as a capacitor is deteriorated.

The present invention has been made in order to solve the above problems, and obtains a capacitor element block that is easy to assemble and that does not apply excessive force to the capacitor element and enables stable and uniform holding. The purpose is to

[Means for Solving the Problems]

A capacitor element block according to the present invention is a flat plate made of a T-shaped insulating material, and a horizontal side and a vertical side of the capacitor element block are adjacent to the upper end surface and the end surface side portion of a capacitor element, which are adjacent to the left and right sides, respectively. A flat plate made of a rectangular insulating material orthogonal to the first side piece, inserted between vertically adjacent capacitor elements, one side of which is connected to the upper edge of the lateral side of the first side piece. A second side piece integrally formed with the first side piece, and a flat plate made of a rectangular insulating material orthogonal to the first and second side pieces, and adjacent to each other on the left and right sides. The first side of the first side piece and the second side piece of the first side piece connected to the first side of the first side piece.
And an insulating spacer comprising a second side piece and a third side piece integrally formed with the second side piece.

[Action]

Insulating spacers are fitted to both ends of the pair of left and right capacitor elements in a symmetrical arrangement. Next, a predetermined number of layers of a pair of capacitor elements fitted with the insulating spacers are stacked. In this case, the lower side of the third side piece of the upper insulating spacer is brought into contact with the second side piece of the lower insulating spacer, and they are sequentially stacked.

When the whole stack is finished, the whole is tightly bound and held with insulating tape.

Regarding the connection between the capacitor elements, the capacitor elements are arranged so as to cross the vertical side of the first side piece of the insulating spacer between the adjacent capacitor elements on the left and right, and the first insulating spacer is provided between the capacitor elements which are vertically adjacent to each other. Cross over the side of the side piece.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. First
The figure is a perspective view showing one stage of capacitor element unit which is a unit of block. In the figure, (1L) and (1R) are a pair of capacitor elements arranged in parallel to the left and right, and (5) is an insulating spacer fitted symmetrically on both ends of the capacitor elements (1L) and (1R). Manufactured by integral molding using polypropylene resin.

Next, the shape and structure of the insulating spacer (5) will be described in detail. The insulating spacer (5) has first to third side pieces orthogonal to each other. First, the first side piece (51) is T
It is a letter-shaped flat plate, and the length of its lateral side (51A) is set to be slightly larger than twice the diameter of the capacitor element (1). The length of the vertical side (51B) from the upper end of the horizontal side (51A) is set to be slightly larger than the diameter of the capacitor element (1).

In addition, the width dimension W of the horizontal side (51A) and the vertical side (51B) is such that, when each capacitor element (1) is connected in series, it is sufficient to withstand the voltage generated between the adjacent capacitor elements (1). It is set to the leak length value.

The second side piece (52) is connected to the upper edge of the lateral side (51A) of the first side piece (51), and the second side piece (52) is vertically adjacent to the capacitor element (1). ) Is inserted between. The width dimension D is set to a value equal to or greater than W.

One side edge of the third side piece (53) has the first side piece (5
It is connected to the center line of the vertical side (51B) of 1), and its upper edge is connected to the center line of the second side piece (52) in the longitudinal direction, and the third side piece (53) is connected to the left and right. It is inserted between the adjacent capacitor element (1L) and capacitor element (1R).

Next, an example of a work procedure when assembling a plurality of capacitor elements (1) into a block using this insulating spacer (5) will be described. First, a pair of capacitor elements (1
L) and (1R) are arranged in parallel, and insulating spacers (5) are fitted from both ends thereof as shown in FIG. That is, the third side piece (53) of the insulating spacer (5) is inserted between the left and right capacitor elements (1L) and (R), and the first side piece (51) is connected to both capacitor elements (51). 1L) and (1R) end surfaces should be in contact. Then, in the state of FIG. 1, both insulating spacers (5) are tightly bound with an insulating tape or the like.

Next, with this pair of capacitor elements (1) as one stage,
As shown in Fig. 2, stack the required number of stages. In this case, the lower end of the third side piece (53) of the upper insulating spacer (5) is the lower side of the second side piece (52) of the lower insulating spacer (5).
Stack them one after another so that they come into contact with. Then, the entire assembled block is held tightly with an insulating tape or the like.

The connection between the capacitor elements (1) is made by connecting the electrode leads (2) drawn from the end faces of the respective capacitor elements (1) by soldering or the like. On the front end face of the block shown in FIG. 2, the electrode leads (2) of the capacitor elements (1) adjacent to each other on the left and right are connected to each other, and the electrode leads (2) are the first of the insulating spacers (5). Are arranged across the vertical side (51B) of the side piece (51). On this end face, a voltage for two series of the maximum capacitor element (1) (a maximum voltage for four series on the opposite side end face to be described later) is applied between the capacitor elements (1) vertically adjacent to each other. The insulation leakage length required for the voltage is borne by the lateral side (51A) of the first side piece (51) and the second side piece (52) of the insulating spacer (5).

FIG. 3 shows the connection state at the end face opposite to the end face of the capacitor element (1) shown in FIG. 2, in which case the electrode lead (2) is the first of the insulating spacer (5).
Is arranged across the side (51A) of the side piece (51). At these end faces, a voltage is also applied between the capacitor elements (1) that are adjacent to each other on the left and right, so that the vertical side (51) of the first side piece (51) of the insulating spacer (5) is applied to this voltage.
The leakage length between B) and the second side piece (52) is responsible for the insulation.

With the above-described structure, each capacitor element (1) is mechanically and reliably held by the insulating spacer (5) provided for each stage, and the quality is guaranteed. Also, when the capacitor elements (1) are stacked in a plurality of stages, since the vertically adjacent insulating spacers (5) are directly brought into contact with each other, the outer shape as a block is accurately finished, and the electrode leads (2)
However, the unreasonable power is not added.

Furthermore, since the insulating spacer (5) has not only the mechanical holding function described above but also an electrical insulating function, the insulating barrier (4) used conventionally is unnecessary, and the work content is extremely simple. Become. Since there is no insulating barrier (4), connection work such as soldering is simplified and the work defect rate is greatly reduced.

Although polypropylene resin is used as the material of the insulating spacer (5) in the above embodiment, any other material may be used as long as it can be integrally molded and has a certain dielectric strength and mechanical rigidity. Produce the effect of.

Further, the insulating spacer (5) in FIG. 1 shows its basic shape. For example, in order to increase the rigidity of the insulating spacer (5) and to further improve the workability during assembly, the insulating spacer (5) has the above-mentioned basic shape. In addition, a suitable reinforcing piece may be provided.

[Effect of device]

As described above, according to the present invention, the capacitor element block is assembled by using the predetermined insulating spacer. Therefore, this insulating spacer simultaneously exhibits the functions of mechanical holding and electrical insulation, and the The work content is extremely simple, each capacitor element is held reasonably and securely, the quality is guaranteed, the external shape of the block is accurate, and the finished connection part is not subjected to excessive force, improving the reliability of the capacitor. To do.

[Brief description of drawings]

FIG. 1 is a perspective view showing a capacitor element unit according to an embodiment of the present invention, and FIGS. 2 and 3 are perspective views and rear views seen from the front side, respectively, showing a capacitor element block assembled from the one shown in FIG. FIG. 4 is a perspective view showing a conventional low-voltage capacitor element block, and FIG. 5 is a partial cross-sectional view showing a partial section of a main part of the conventional high-voltage capacitor element block. In the figure, (1) is a capacitor element, (2) is an electrode lead, (5) is an insulating spacer, (51) is a first side piece,
(51A) is the horizontal side, (51B) is the vertical side, (52) is the second side piece,
(53) is the third side piece. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] 1. A T-shaped insulating material in which a pair of capacitor elements arranged parallel to each other on the left and right are further stacked in a plurality of layers, and these capacitor elements are electrically connected to each other in series. A flat plate made of and having a lateral side and a vertical side abutting on the upper end face and the end face side portion of the capacitor element adjacent to the left and right, respectively, and a rectangular insulating material orthogonal to the first side piece. Is formed between the capacitor elements vertically adjacent to each other, and is integrally formed with the first side piece so that one side thereof is connected to the upper edge of the lateral side of the first side piece. A second side piece and a flat plate made of a rectangular insulating material that is orthogonal to the first and second side pieces, and is inserted between the capacitor elements that are adjacent to each other on the left and right sides, and the two adjacent sides are respectively the above-mentioned first and second sides. At the center position of the 1st and 2nd side pieces in the left-right direction The first in contact
And an insulating spacer comprising a second side piece and a third side piece formed integrally with the second side piece, wherein the lower end of the third side piece of the upper side insulation spacer is the second side piece of the lower side insulation spacer. A capacitor element block, characterized in that the insulating spacers are arranged at both ends of each of the capacitor elements so as to be in contact with the capacitor element block and assembled.