JPH043491Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a variable capacitor using a synthetic resin film as a dielectric.

Conventional technology Conventionally, as shown in FIGS. 1 and 2, the base 1
When assembling, attach metal support 2 to base 1.
When press-fitting the metal struts 2a, 2b and the stator groups 5a, 5b, a U-shaped connecting terminal is inserted, and a U-shaped connection terminal is inserted onto the stator groups 5a, 5b via the insulating rings 6a, 6b. Stator group 5
Assemble the stators 4c and 5d, insert metal rings 7a and 7b in order to connect these stator groups with the metal supports 2c and 2d in the same way as above, and place the washer 4 on top of the metal rings 7a and 7b.
It had a structure in which parts a and 4b were press-fitted respectively.

Problems that the invention aims to solve The conventional variable capacitors described above inevitably suffer from poor performance due to poor contact between the connecting terminals and washers, have a complex structure, require many man-hours, and are time-consuming to assemble. The disadvantage was that it was difficult to

Means for Solving the Problems The present invention has a flange for the purpose of direct conduction between the stator group and the strut, and the flange of the strut is treated to prevent slippage and rotation at the lower part of the flange. This invention provides a variable capacitor whose lower part is press-fitted and fixed from the upper surface of an insulating base having a support insertion hole with a diameter slightly smaller than the outer diameter of the support.

Effects The present invention has the above-mentioned configuration, and the flange of the metal strut is placed on the upper surface of the cylindrical strut of a prescribed height of each stator group protruding from the four corners of the base, and the portion of the metal strut below the flange is provided. By press-fitting the stator into the column insertion hole with a diameter slightly smaller than the outer diameter of the metal column provided in the cylindrical column, it became possible to conductively fix each stator group to the upper surface of the collar of each metal column without using connection terminals. .

Embodiment FIG. 3, FIG. 4, and FIG. 5 show an embodiment of the present invention. 10 is an insulating base made of resin or the like, and on the four corners of the front side of this insulating base,
Cylindrical support 12 for holding each stator group 11a, 11b, 11c, 11d at a specified height
a, 12b, 12c, and 12d are integrally formed, and these cylindrical supports have metal supports 13a,
Metal support insertion holes 14a, 14b, 14c, 1 with an inner diameter slightly smaller than the outer diameter of 13b, 13c, 13d.
Open 4d. Metal struts 13a, 13b, 13
stator groups 11a and 1, respectively, in c and 13d.
Flanges 15a, 15b, 15c, and 15d for holding the metal columns 1b, 11c, and 11d at specified heights are formed using a press molding method, etc., and sections with different diameters, grooves, etc. are formed at the bottom of the flanges of these metal supports. Under-flange supports 13a', 13b', 13c', which are treated to prevent slipping off and rotation.
13d' are press-fitted into the metal support insertion holes 14a, 14b, 14c, and 14d of the insulating base 10. That is, the hole 14a has the under-flange support 1 of the metal support 13a.
3c', the under-flange strut 13b' of the metal strut 13b into the hole 14b, the under-flange strut 13a' of the metal strut 13c into the hole 14c, and the under-flange strut 13d' of the metal strut 13d into the hole 14d. The lower surface of each tsuba is brought into contact with the upper part of each cylindrical support. As shown in FIG. 3, the metal support 13a on the upper surface of the collar 15a
The stator group 11a is inserted and placed on the flange 15b.
The stator group 11b is inserted and placed on the upper metal support 13b, and the stator group 11c is inserted and placed on the metal support 13c above the collar 15c as shown in FIG. The stator group 11d is inserted and placed on the metal support 13d. 16a,1
Reference numerals 6b, 16c, and 16d are cylindrical trimmer base supports protruding from the back side of the four corners of the insulating trimmer base 16 made of resin or the like, and the height of each cylindrical trimmer base support 16a, 16b, 16c, and 16d is equal to the height of the metal trimmer base 16. Supports 13a, 13b, 13c, 13d
The height corresponds to the height of the collars 15a, 15b, 15c, and 15d. Then, insert the cylindrical trimmer base support 16a into the metal support 13a from above,
The cylindrical trimmer base support 16 is attached to the metal support 13b.
b from above, insert the cylindrical trimmer support 16c into the metal support 13c from above, and then
A cylindrical trimmer base support 16d is inserted from above into the cylindrical trimmer base support 3d, and the end face of each cylindrical trimmer base support is arranged so as to press the top surface of each stator group, and each metal support 13a, 13b, 1
Screw nuts 17a, 17b, 17c, and 17d onto the tips of trimmer base 16 from the outside of trimmer base 16 to the tips of trimmer base 10 and stator group 1.
1a, 11b, 11c, 11d and the trimmer base 16 are tightened. 18 is each stator group 11a,
Rotor group 19 corresponding to 11b, 11c, 11d
This is a rotor shaft to which parts a, 19b, 19c, and 19d are fixed, and is rotatably supported between the base 10 and the trimmer base 16.

Effects As described above, the present invention provides a cylindrical support that protrudes from the four corners of the base by providing a collar at a height corresponding to the height of each stator group in the middle of the metal support installed at the four corners of the base. Since the lower supports of the flanges of the metal struts are press-fitted from above into the metal struts, and the lower surfaces of the flanges are brought into contact with the upper surfaces of the cylindrical struts, the connecting terminals and washers used for conducting the stator group can be omitted. . In addition, by fitting the stator group into the upper end of each metal support and bringing it into contact with the collar, there is no need to use connection terminals and washers that were used to conduct the stator group, reducing the number of parts.
The structure is simplified, and since the cylindrical trimmer support of the trimmer base is inserted from the upper end of each metal support, the assembly work of the variable capacitor can be automated.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional variable capacitor, Figure 2 is a front view of a conventional variable capacitor.
3 is a front view of the variable capacitor of the present invention, FIG. 4 is a rear view of the same, and FIG. 5 is an exploded front view of the metal support. 10...Insulating base, 11a, 11b, 11
c, 11d...Stator group, 12a, 12b, 1
2c, 12d...Cylindrical support, 13a, 13b,
13c, 13d...metal support, 14a, 14b,
14c, 14d...metal support insertion hole, 15a, 1
5b, 15c, 15d...Tsuba, 16...Trimmer base, 16a, 16b, 16c, 16d...Cylindrical trimmer base support, 17a, 17b, 17
c, 17d...Natsuto.

Claims (1)

[Scope of utility model registration request] A flange for the purpose of direct conduction between the stator group and the metal struts, and a metal strut that is treated to prevent slippage and rotation below the flange, are insulated with metal strut insertion holes with an inner diameter smaller than the outer diameter of the metal struts. The variable capacitor is press-fitted into the metal support insertion hole of the insulating base from the upper surface of the insulating base, and a stator group is electrically fixed to the upper surface of the flange of the metal support.