JPH0587937U - Condenser structure without welding - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a structure in which a lead wire or a terminal is not soldered to an element of a metallized plastic film capacitor. [Structure] Cap 1, condenser element 2,
It is composed of two main members such as the two conductive springs 3 and the shell 5. Hold the spring 5 of the conductive spring 3 in the shell 5
Then, the down hollow 31 is hung on the upper end of the inside wall 55 of the shell, the capacitor element 2 is inserted between the scale-shaped springs 34, and the conductive spring 3 is brought into close contact with the conductive surface 21 thereof. The inclined plate 32 is put in the insert tank 52, and the lead wire to be drawn out is inserted into the insert tank 52 through the insert channel 13 of the cap 1. The core of the lead wire is the hollow pit 33.
It is pressed against the wall of the tank 52 by the contact with the conductive spring 3 and comes into contact therewith. The cap 1 is covered and the seam is ultrasonically welded.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a capacitor structure that does not use welding.

[0002]

[Prior Art]

 Nowadays, capacitors are widely used in electronic or electric equipments, and have the characteristics of temporarily storing capacity in capacitors and releasing power for starting. Also, in order to reduce the cost and size of general capacitors, the majority of them use plastic film as an intermediary, that is, generally so-called metallized plastic film capacitors.

[0003]

[Problems to be solved by the device]

 A metallized plastic film capacitor is made by passing a metal film on a plastic film by hot air to form an electrode. However, during the manufacturing process of the metallized plastic film capacitor, the conventional method is to pass through the metallized plastic film. Wrap it around to make a condenser element, heat and pressurize it, dry it, and solder it, and then solder a metal surface to both poles and weld the required lead wire or terminal (solder or dot). Soldering). Generally, in order to reach a good welding effect, all-tin-lead alloy is used for soldering of the metal, and in order to reduce the cost, the lead content of the tin-lead alloy should be as high as possible. High lead content (30% to 90%), however, must be guarded during the manufacturing process, as its lead poisoning has a tremendous impact on human health and environmental pollution.

[0004]

[Means for Solving the Problems]

 The present invention mainly covers conductive springs separately on the upper ends of the inside wall weldings on both sides in the shell where the capacitor element is left undisturbed, and in the vicinity of these conductive spring bodies, the conductive springs are densely arranged and arranged in order. Such a small spring is used as a conductive plate, and these small springs are brought into close contact with and pressed against the conductive surface of the capacitor element.Generally used capacitor elements are well connected to the lead wire or terminal from both poles. It replaces the inconvenience of welding: and when welding the cap and shell together, the sloping plate of the conductive spring is in the insert tank of the shell and the insert line of the outline is the insert on both ends of the cap.・ When inserting from a channel, The insert line pulls the sloping plate inward, and when the insert line penetrates the hollow pit under the sloping plate and the inside wall of the insert tank, the sloping plate moves outward due to its elasticity. The bounce and hollow pits are characterized in that the insert line is pressed against the inside wall of the insert tank to replace the commonly used insert line by the inconvenience of welding or welding.

[0005]

【Example】

 The other objects and advantages of the present invention will be more clearly described with reference to the combined display of the drawings. The special structure and its technical means and features used to achieve the above designing purpose of the present invention in combination with the drawings will be described in detail as follows.

Referring to FIG. 1, it is an exploded view of an embodiment of the present invention, including the following: a cap 1, a capacitor element 2, two conductive springs 3, a fixing plate 4, a shell 5, etc. Assemble from the main components of. Among them, the cap 1 and the shell 5 are made of an insulative plastic such as ABS that withstands combustion or PC or PBT that withstands relatively high temperature, and is injection-molded to form a molding.

There are two banks 11 parallel to each other on the lower side of the cap 1, and the peripheral edge of the upper end of the bank 11 is a joint surface 12, and the entire circumference of the joint surface 12 is a very fine and small convex bar. 121 (as shown in FIGS. 1 and 2) and symmetrical insert channels 13 on both sides of the upper end of the cap 1 so that one or more insert channels 13 can be formed. it can.

Among them, the capacitor element 2 is made into a conductive surface 21 by soldering zinc (Zn), which is non-toxic and relatively low in cost, to both end sides thereof. Among them, the two conductive springs 3 are made of phosphor bronze, and have down hollows 31 arranged at the upper end thereof so as to be separated at equal distances, and the down hollows 31 are extended to form tilted swash plates 32. A hollow pit 33 is formed in the center of the lower side of the plate 32, and a scale-like small spring 34 that is densely arranged in order near the main body of the conductive spring 3 is used as a conductive plate.

Among them, the fixing plate 4 may be a kind of rectangular plate or a vertical plate, and is fixed by being combined with an upright or flat surface of the capacitor. Among them, the shell 5 has a shape of the upper peripheral edge 5 similar to the joint surface 12 of the cap 1, has insert tanks 52 on both end sides thereof, and holds tanks at the same distance on one side at the front upper end. It has 53 and a hold room 54, and both ends thereof are used as insert walls 55.

When the structure shown in the present embodiment is used as a basis and each member is assembled to form a complete capacitor body, the conductive spring 3 is left in the hold room 54 of the shell 5 and the conductive spring 3 is formed. The down hollow 31 of the above is inserted into the upper end of the inside wall 55 of the shell, and then the capacitor element 2 is left between the two conductive springs, and the scaly small spring 34 arranged near the conductive spring 3 is arranged. Is closely attached to and pressed against the conductive surface 21 of the capacitor element 2, so that the commonly used capacitor element can replace the inconvenience of welding to the lead wire or terminal from both poles. Then, the bank 11 under the cap 1 is separated and left in the hold room 54 of the shell 5, and the bank 11 parallel thereto fixes the condenser element 2 by fixing it in the shell 5. (As shown in FIG. 5). When the cap 1 and the shell 5 are fitted together, the convex bar 121 on the joint surface 12 of the cap 1 is brought into close contact with the upper circumferential edge 51 of the shell 5, and then the seam is welded using an ultrasonic welding machine. It becomes an individual condenser.

Referring also to FIG. 5, it is a cross section that vertically divides FIG. 3 approximately vertically in half, of which the down hollow 31 of the conductive spring 3 is at the upper end of the inside wall 55 of the shell 5. Once inserted, its ramp 32 is just left in the insert tank 52 of the shell 5. The insert tank 52 is used for inserting the insert line 61 of the outline 6, the insert line 61 of the outline 6 is inserted from the insert channel 13 of the cap 1, and the insert line 61 is the inclined plate of the conductive spring 3. When the hollow pit 33 of No. 3 is supported downward, the inclined plate 32 is moved inward (as shown by the phantom line), and the insert line 61 penetrates the hollow pit 33 and the tank wall of the insert tank 52. In this case, the inclined plate 32 is elastically repelled outward, and the hollow pit 33 presses the insert line 61 against the tank wall of the insert tank 52. The structure of fixing with such an insert can replace the commonly used conventional insert line with the inconvenience of welding or welding.

Next, referring to FIG. 4, there is shown a cross-sectional view of inserting the fixing plate into the hold tank near the shell 5 of the present invention. The fixing plate 4 is held by the tenon 42 of the insertion portion 41 of the holding tank 53. The retaining ring 531 of the above is stopped, and then the hole 43 of the fixing plate 4 is fixed by the cotter joint or the screw joint system to the electronic or electric equipment to be combined with the individual capacitor.

The capacitor assembled according to the structure of the present invention has the following advantages: (1) It is non-toxic to metal soldering and has a relatively low cost, such as zinc (Zn). (2) The joint method of soldering a metal surface is a small spring with a conductive spring-like shape, and it uses welding at multiple points to replace the welding or welding points, and Material costs can be saved.

(3) The cap and shell are sealed by ultrasonic welding, which saves the cost of filling the epoxy resin. (4) Use the outline insert method to reduce packaging costs and tangential costs for users. (5) It is possible to provide various lockout methods by using the insertion of the fixing plate into the hold tank.

(6) It is suitable for series or parallel assembly of various capacitors.

[Brief description of drawings]

FIG. 1 is an exploded view of an embodiment of the present invention.

FIG. 2 is a sectional view showing the cap of the present invention.

FIG. 3 is a perspective view of an embodiment of the present invention.

FIG. 4 is a cross-sectional view for inserting a hold tank near the shell into the insertion portion of the fixing plate of the present invention.

FIG. 5 is an observation view in which FIG. 3 is vertically halved approximately vertically in half.

[Explanation of symbols]

 1 Cap 2 Condenser Element 3 Two Conductive Springs 4 Fixing Plate 5 Shell 6 Outline 11 Bank 12 Bonding Surface 13 Insert Channel 21 Conductive Surface 31 Down Hollow 32 Inclined Plate 33 Hollow Pit 34 Small Spring 41 Insert 42 42 Tenon 43 holes 51 upper circumference 52 insert tank 53 hold tank 54 hold room 55 inside wall 61 insert line 121 convex bar 531 snap ring

Claims (1)

[Scope of utility model registration request] 1. A pair of or one or more pairs of symmetrical insert channels are provided on both sides of an upper end of the upper end, and two parallel banks are provided on the lower side. A cap with a very small and small convex bar at the center of the entire circumference of the surface and a down hollow at the upper end of each of which is arranged equidistantly, and the down hollow is extended. Becomes an inclined plate,
A hollow pit is formed at the center of the lower side of the inclined plate, and small scale-like small springs densely arranged in the vicinity of these conductive springs are provided to form a conductive plate.
Two conductive springs: a square plate and it can be made into a vertical plate, and a fixed plate with an insertion part and a tenon at the insertion part: a hold room in it and a condenser・ Used to leave the element unattended and provided each insert tank on both ends
One or more hold tanks are provided in the vicinity of the front of the shell, and one retaining ring is provided in the hold tank, which serves to hook the tenon of the fixing plate, and the hole of the fixing plate is a cotter joint or Is a screw joint method for fixing a condenser individual to an electronic or electrical device: With the above-mentioned members, the two conductive springs are separated and left in parallel in the shell hold room, and the conductive spring is down.・ The hollow is inserted into the upper end of the inside wall of the shell, and then the capacitor element is left between the small springs of the two conductive springs, and the small spring is brought into close contact with and pressed against the conductive surface of the capacitor element.・ The element should be a lead wire or terminal from both poles. The invention can supersede it as it is molded: then two parallel banks underneath the cap are left separately in the shell's hold room for joining the cap and shell together. The convex bar on the surface adheres to the circumference of the top edge of the shell, and then the inner seam is welded by the ultrasonic welding machine to instantly become one capacitor individual: Among them: the inclined plate of the conductive spring is of the shell. insert·
Inside the tank, after inserting the outline insert line from the cap's insert channel, the insert line supports the sloping plate's hollow pits downwards and pulls the sloping plate inward so that the insert line is hollow.・ When penetrating the insert wall of the pit and insert tank, the inclined plate rebounds due to elasticity, and the hollow pit presses the insert line against the insert wall of the insert tank and welds to the commonly used insert line. Alternatively, the structure of the condenser without welding, which is characterized in that it can replace the inconvenience of welding.