CN210156265U

CN210156265U - Variable capacitor

Info

Publication number: CN210156265U
Application number: CN201921160451.6U
Authority: CN
Inventors: 张玲
Original assignee: Guangzhou Zhongzheng Electronics Development Co Ltd
Current assignee: Guangzhou Zhongzheng Electronics Development Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-03-17
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a variable capacitor, which comprises a protective shell, wherein an anode sheet and a cathode sheet are arranged in the protective shell, the anode sheet and the anode sheet are connected into a whole through a conductive connecting rod, the upper end of the anode sheet is connected with an anode needle and a primary regulator, and the primary regulator comprises a regulating cap, a regulating rod and a rotating block fixed on an anode sheet body; the cathode sheet is connected with a cathode needle; the protective shell is provided with a secondary regulator, the secondary regulator consists of a screw cap, an adjusting screw rod extending into the shell, an adjusting sleeve sleeved outside the adjusting screw rod and in threaded connection with the adjusting screw rod, and a conductive push plate connected with the adjusting sleeve through a plurality of groups of connecting rods, wherein a cathode sheet is arranged on the push plate and is spaced from an anode sheet, the upper end of the push plate is in sliding connection with a slide block, and a metal guide sheet is arranged between the push plate and the slide block; the utility model aims at providing a variable capacitor aims at adjusting on a large scale through changing the interval, and the rethread changes the area and finely tunes it to realize the more accurate control of electric capacity.

Description

Variable capacitor

Technical Field

The utility model belongs to the technical field of the condenser, specifically relate to a variable capacitor.

Background

The variable capacitor is a capacitor with the capacitance adjustable within a certain range, the capacitance of the variable capacitor is correspondingly changed by changing the relative effective area between the pole pieces or the distance between the pole pieces, the relationship between the capacitance of the variable capacitor and the distance between the pole plates is in an inverse relationship, and under the condition that the relative areas of the pole plates are the same, the larger the distance between the pole plates is, the smaller the distance is, the larger the capacitance is; the area of the polar plate is in direct proportion to the capacitance, and the larger the area is, the larger the capacitance is.

In the conventional variable capacitor, the relative area between the pole plates is generally changed by screwing the pole plates, so as to adjust the capacitance, but the screwed area is not easy to control (the area of N groups of pole plates is changed), so that only a range adjustment can be performed, and thus, a variable capacitor capable of performing fine adjustment is needed to solve the above problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at above problem, provide a variable capacitor, aim at adjusting on a large scale through changing the interval, the rethread changes the area and finely tunes it to realize the more accurate control of electric capacity.

In order to achieve the purpose, the utility model adopts the technical scheme that the device comprises a protective shell, a plurality of groups of anode sheets and cathode sheets are arranged inside the protective shell at intervals, the anode sheets and the anode sheets are connected into a whole through a conductive connecting rod, the upper end of the anode sheet is connected with an anode needle penetrating out of the protective shell and a primary regulator for regulating the area between the pole sheets, and the primary regulator comprises a regulating cap, a regulating rod and a rotating block fixed on an anode sheet body; the cathode sheet is connected with a cathode needle extending out of the protective shell; still be provided with the second grade regulator on the protective housing, the second grade regulator is established the adjusting collar with adjusting screw threaded connection outside adjusting screw, the electrically conductive push pedal of being connected through the multiunit connecting rod with the adjusting collar by twisting the cap, stretching into adjusting screw in the shell and establishing and is constituteed, and wherein the even installation of negative pole piece is in the push pedal, and positive pole piece interval sets up, push pedal upper end and slider sliding connection, and is provided with the metal guide strip between push pedal and the slider, switches on negative pole needle and negative pole piece electrical property.

Further, the push plate is made of copper.

Furthermore, the anode sheet and the conductive connecting rod are welded together.

Compared with the prior art, the utility model provides a variable capacitor, it has the one-level regulator for to the area between the polar plate tentatively adjust, make it be close the default, then finely tune through the second grade regulator, dwindle the range value, approach the default, thereby reach the purpose of carrying out accurate regulation to the condenser, and the regulative mode is comparatively simple, rotate the regulation cap and twist the cap can, other beneficial effects in the utility model, still will explain further in concrete implementation mode.

Drawings

Fig. 1 is a schematic view of the internal structure of the capacitor of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a partially enlarged structural diagram of a portion B in fig. 1.

FIG. 4 is a schematic top view of the primary regulator and the anode strip.

The text labels in the figures are represented as: 1. a protective housing; 2. a primary regulator; 3. an anode sheet; 4. a cathode sheet; 5. a conductive connecting rod; 6. an anode needle; 8. a cathode pin; 9. a secondary regulator; 21. an adjusting cap; 22. adjusting a rod; 23. rotating the block; 81. a slider; 82. a metal guide plate; 83. a gap; 91. screwing the cap; 92. adjusting the screw rod; 93. an adjusting sleeve; 94. pushing the plate; 95. a connecting rod.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-4, the variable capacitor provided by the present invention comprises a protective casing 1, a plurality of sets of anode strips 3 and cathode strips 4 are arranged at intervals inside the protective casing 1, the anode strips 3 and the cathode strips 3 are connected into a whole through a conductive connecting rod 5, the upper end of the positive electrode strip is connected to an anode needle 6 penetrating out of the protective casing 1 and a first-stage regulator 2 for regulating the area between the anode strips, the first-stage regulator 2 comprises a regulating cap 21, a regulating rod 22 and a rotating block 23 fixed on the anode strip 3, the regulating cap 21 is rotated to drive the anode strip 3 to rotate, the area of the anode strip 3 entering the cathode strip 4 is changed, and the preliminary regulation is completed (the anode needle 6 passes through the regulating cap 21); the cathode sheet 4 is connected with a cathode needle 8 extending out of the protective shell 1; the protective shell 1 is also provided with a secondary regulator 9, the secondary regulator 9 is composed of a screwing cap 91, an adjusting screw 92 extending into the shell, an adjusting sleeve 93 sleeved outside the adjusting screw 92 and in threaded connection with the adjusting screw 92, and a conductive push plate 94 connected with the adjusting sleeve 93 through a plurality of groups of connecting rods 95, wherein the cathode plate 4 is uniformly arranged on the push plate 94 and is arranged at intervals with the anode plate 3, the upper end of the push plate 94 is in sliding connection with the sliding block 81, and a metal guide sheet 82 is arranged between the push plate 94 and the sliding block 81 to electrically conduct the cathode needle 8 and the cathode plate 4; after the preliminary adjustment is completed, the adjusting screw 92 is rotated by rotating the screw cap 91, so as to drive the adjusting sleeve 93 to ascend or descend in the gap 83, and further to pull the connecting rod 95, push the push plate 94 out or back, so as to change the effective area between the cathode sheet 4 and the anode sheet 3, and achieve fine adjustment (the arrow direction in fig. 3 is the moving direction for increasing the effective area).

Preferably, the push plate 94 is made of copper.

Preferably, the anode sheet 3 and the conductive connecting rod 5 are welded together.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. A variable capacitor comprises a protective shell (1), wherein a plurality of groups of anode strips (3) and cathode strips (4) are arranged inside the protective shell (1) at intervals, and the variable capacitor is characterized in that the anode strips (3) and the anode strips (3) are connected into a whole through a conductive connecting rod (5), the upper ends of the anode strips are connected with an anode needle (6) penetrating out of the protective shell (1) and a primary regulator (2) for regulating the area between the pole pieces, and the primary regulator (2) comprises a regulating cap (21), a regulating rod (22) and a rotating block (23) fixed on a sheet body of the anode strips (3); the cathode sheet (4) is connected with a cathode needle (8) extending out of the protective shell (1); still be provided with secondary regulator (9) on protective housing (1), secondary regulator (9) are by twisting cap (91), adjusting screw (92) that stretch into the shell, the cover is established adjusting collar (93) of adjusting screw (92) outer with adjusting screw (92) threaded connection, constitute with electrically conductive push pedal (94) that adjusting collar (93) are connected through multiunit connecting rod (95), wherein the even installation of negative pole piece (4) is on push pedal (94), set up with positive pole piece (3) interval, push pedal (94) upper end and slider (81) sliding connection, and be provided with metal guide piece (82) between push pedal (94) and slider (81), switch on negative pole needle (8) and negative pole piece (4) electrical property.

2. A variable capacitor as claimed in claim 1, wherein said push plate (94) is of copper material.

3. A variable capacitor according to claim 1, characterized in that the anode sheet (3) and the conductive connection rod (5) are welded together.