An adjustable mica sheet capacitor

Abstract

The present invention discloses an adjustable mica sheet capacitor, which relates to the field of electrical component technology. The capacitor comprises a mounting base, the upper side of which is provided with a groove, a positive electrode notch and a negative electrode notch, and two symmetrically arranged fixing notches. A plurality of capacitor plates are mounted in the groove, and a first mica sheet is mounted between each two adjacent capacitor plates. The capacitor plates comprise metal plates, one side of which is provided with an electrode contact, and two symmetrically arranged fixing plates are mounted on opposite sides of the metal plates. The present invention accumulates electrical energy by using multiple staggered arc-shaped capacitor plates, and the curvature of the arc-shaped capacitor plates is controlled by bolts and a pressure plate. By changing the curvature between adjacent capacitor plates, the maximum capacity of the capacitor can be increased or decreased.

Description

Technical Field

[0001] The invention relates to the technical field of electrical components, in particular to an adjustable mica sheet capacitor. Background Art

[0002] Capacitance refers to the storage capacity of free charge under a given potential difference, denoted by C and measured in farads (SI units). Generally speaking, charges move in an electric field due to forces. When a dielectric exists between conductors, this movement is hindered, causing charge to accumulate on the conductors. This accumulation is called capacitance. Currently, capacitors are typically made by placing insulating adhesive between two capacitor plates at a certain distance. The equation for determining capacitance is: C = εrS / 4πkd. Here, εr is the relative dielectric constant, S is the area between the capacitor plates, d is the distance between the plates, and k is the electrostatic force constant. Current variable capacitors are typically constructed by supporting two sets of rotatable capacitor plates. Controlling the rotation of one set of plates changes the area S between the two plates, thereby controlling the capacitance (the plates are typically fan-shaped).

[0003] However, when the current variable capacitor changes the size of the capacitance, it is often necessary to rotate the capacitor plate for adjustment. However, when the capacitor plate is rotated, debris may be drawn into two adjacent capacitor plates, which is not safe. In addition, when the current variable capacitor needs to change the maximum capacitance, a corresponding number of capacitor plates need to be installed or removed, which is not convenient and fast enough. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology that the operation of changing the capacitance of the current variable capacitor is prone to danger and changing the maximum capacitance is cumbersome, the purpose of the present invention is to provide an adjustable mica sheet capacitor.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an adjustable mica sheet capacitor, comprising a mounting base, a groove being provided on the upper side of the mounting base, a positive electrode notch and a negative electrode notch being provided on the mounting base, two symmetrically arranged fixing notches being provided on the mounting base, a plurality of capacitor sheets being installed in the groove, a first mica sheet being installed between every two adjacent capacitor sheets, the capacitor sheet comprising a metal sheet, an electrode contact being provided on one side of the metal sheet, and two symmetrically arranged fixing sheets being provided on the opposite side of the metal sheet, a protective cover being cooperatively installed on the upper side of the mounting base, the protective cover being provided with two first notches and two second notches A notch is provided in each of the first notches, a second mounting seat is installed in the positive electrode notch and the negative electrode notch, a fixing plate is installed between the first mounting seat and the corresponding second mounting seat, a group of second mounting holes is provided on the fixing plate, the electrode contacts are provided in cooperation with the second mounting holes, contacts are installed on the fixing plate, an electrical connector is installed in each of the second mounting holes, each of the electrical connectors is provided in cooperation with the corresponding electrode contact, a toggle switch is installed between every two adjacent electrical connectors, a connecting wire is installed in the fixing plate, and the connecting wire connects the electrical connector, toggle switch and contacts inside the fixing plate in series from top to bottom.

[0006] Preferably, the capacitor sheet is divided into a positive capacitor sheet and a negative capacitor sheet, the positive capacitor sheet and the negative capacitor sheet have the same structure, the groove is square, the positive notch and the negative notch are both located on one side of the mounting base, the positive notch and the fixed notch are arranged opposite to each other, each capacitor sheet is arranged corresponding to the corresponding positive notch and negative notch, and each capacitor sheet is arranged corresponding to two fixed notches.

[0007] Preferably, a second mica sheet is installed on the bottom side of the groove, a third mica sheet is installed on the upper side of the uppermost capacitor sheet, and the second mica sheet and the third mica sheet are arranged correspondingly.

[0008] Preferably, the metal sheet is arc-shaped, the metal sheet is square, the fixing sheet is matched with the fixing notch, and a first buffer pad is fixedly mounted on one side of the fixing sheet.

[0009] Preferably, the protective cover is arranged in cooperation with the groove, the two first notches are arranged opposite to the two second notches, and each of the first mounting seats is arranged corresponding to the corresponding second mounting seat.

[0010] Preferably, the electrode contact includes a power connection plate, a first mounting hole is provided on the power connection plate, a third notch is provided on the power connection plate, the third notch is arranged in coordination with the first mounting hole, an elastic iron sheet is provided in the third notch, the elastic iron sheet is lightning-shaped, and a weight-reducing hole is provided on the elastic iron sheet.

[0011] Preferably, a stud is embedded and installed on the bottom of the mounting base, a screw hole is provided on the stud, a bolt is installed in the screw hole, a single-shaped slot is provided at both ends of the bolt, a pressing plate is sleeved on the bolt, and the diameter of the bolt is smaller than the diameter of the third through hole.

[0012] Preferably, a fourth through hole is formed on the capacitor sheet, and a fifth through hole is formed on the first mica sheet, the second mica sheet and the third mica sheet, and the third through hole, the fourth through hole and the fifth through hole are of the same size.

[0013] Preferably, two positioning slots are provided on the mounting base, each positioning slot is provided with a snap slot, the two snap slots are arranged opposite to each other, a third through hole is provided at the center of the upper side of the protective cover, and two snap plates are fixedly installed on the protective cover, and the snap plates are arranged in cooperation with the snap slots.

[0014] Preferably, a guide seat is installed in each of the second notches, a fixing pin is threadedly connected to the guide seat, and the fixing pin is arranged corresponding to the first buffer pad.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention accumulates electrical energy through multiple staggered arc-shaped capacitor plates. The arc of the arc-shaped capacitor plates is controlled by bolts and a pressure plate. When the bolts are tightened, the pressure plate presses downward, reducing the arc of two adjacent capacitor plates. This increases the area S of the capacitor plates facing each other and reduces the distance d between the farthest capacitor plates (the capacitance is determined by the equation: C = εrS / 4πkd, where εr is the relative dielectric constant, S is the area of ​​the capacitor plates facing each other, d is the distance between the capacitor plates, and k is the electrostatic force constant). This increases the number of electrons accumulated over time, thereby increasing the maximum capacity of the capacitor. When the bolts are loosened, the pressure plate rises, causing the arc of the two adjacent capacitor plates to increase due to their own elastic force. This reduces the area S of the capacitor plates facing each other and increases the distance d between the farthest capacitor plates. This reduces the number of electrons accumulated over time, thereby reducing the maximum capacity of the capacitor. This adjustment method is safer than existing variable capacitors.

[0017] 2. When in use, the present invention integrates the contacts of the positive capacitor plate and the negative capacitor plate through two fixed plates. The adjacent contacts are controlled by a dial switch, which can conveniently control the number of capacitor plates connected to the circuit, and thus control the area S of the capacitor plates facing each other (C = εrS / 4πkd. Wherein, εr is the relative dielectric constant, S is the area of ​​the capacitor plates facing each other, d is the distance between the capacitor plates, and k is the electrostatic force constant). This allows the present invention to increase or decrease the maximum capacity of the capacitor, which is more convenient and quick, and saves the operation of adding or removing capacitor plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the basic structure of the present invention.

[0019] Figure 2 It is an exploded view of the parts of the present invention.

[0020] Figure 3 This is a schematic diagram of the installation position of the mica sheet of the present invention.

[0021] Figure 4 For the present invention Figure 2 Another perspective of the picture.

[0022] Figure 5 It is a cross-sectional view of the fixing plate of the present invention.

[0023] Figure 6 Schematic diagram of the placement of the capacitor sheet of the present invention.

[0024] Figure 7 For the present invention Figure 6 Another perspective of the picture.

[0025] Figure 8 This is the basic structural intention of the motor contacts of the present invention.

[0026] Figure 9 Schematic diagram of the basic structure of the current variable capacitor.

[0027] In the figure: 101, mounting base; 102, groove; 103, positive electrode notch; 104, negative electrode notch; 105, fixing notch; 106, protective cover; 107, first notch; 108, first mounting seat; 109, fixing plate; 1091, contact; 1092, electrical connector; 1093, toggle switch; 1094, connecting wire; 110, second mounting hole; 111, second notch; 112, guide seat; 113, fixing pin; 114, positioning notch; 115, buckle notch; 116, third through hole; 117 , snap plate; 118, second mounting seat; 201, capacitor plate; 202, metal sheet; 203, electrode contact; 2031, power board; 2032, first mounting hole; 2033, third notch; 2034, elastic iron sheet; 2035, weight-reducing hole; 204, fixing sheet; 205, first buffer pad; 206, first mica sheet; 207, second mica sheet; 208, third mica sheet; 209, fourth through hole; 210, fifth through hole; 211, stud; 213, bolt; 214, slot; 215, pressing sheet. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1-8As shown, the present invention provides an adjustable mica sheet capacitor, a mounting base 101 is provided with a groove 102 on the upper side, the groove 102 is square, the mounting base 101 is provided with a positive notch 103 and a negative notch 104, the positive notch 103 and the negative notch 104 are both located on one side of the mounting base 101, the mounting base 101 is further provided with two symmetrically arranged fixed notches 105, the positive notch 103 and the fixed notch 105 are arranged opposite to each other, a plurality of capacitor sheets 201 are installed in the groove 102, each capacitor sheet 201 is arranged corresponding to the corresponding positive notch 103 and negative notch 104, and each capacitor sheet 201 is arranged corresponding to Two fixed notches 105 are provided correspondingly, a first mica sheet 206 is installed between every two adjacent capacitor sheets 201, a second mica sheet 207 is provided on the bottom side of the groove 102, a third mica sheet 208 is provided on the upper side of the top capacitor sheet 201, the second mica sheet 207 and the third mica sheet 208 are provided correspondingly, and the mounting base 101 is made of ceramic to effectively isolate the external influence on the internal components of the groove 102. When the capacitor sheets 201 are installed, two adjacent capacitor sheets 201 are staggered so that the electrode contacts 203 of the capacitor sheets 201 are staggered in the corresponding negative electrode notches 104 and the positive electrode notches 103, forming a structure as shown in FIG. Figure 6 and Figure 7 The arrangement and combination shown in the figure, whereby two adjacent capacitor sheets 201 become a positive capacitor sheet and a negative capacitor sheet respectively, and a first mica sheet 206 is installed between the two adjacent capacitor sheets 201 to prevent the two from contacting and causing a short circuit. The mica sheet has a better insulation effect than the plastic isolation sheet commonly used now.

[0030] The capacitor sheet 201 is divided into a positive capacitor sheet and a negative capacitor sheet. The positive capacitor sheet and the negative capacitor sheet have the same structure. The capacitor sheet 201 includes a metal sheet 202. The metal sheet 202 is arc-shaped. The metal sheet 202 is square. An electrode contact 203 is provided on one side of the metal sheet 202. Two symmetrically arranged fixing sheets 204 are provided on the opposite side of the metal sheet 202. The fixing sheets 204 are arranged in conjunction with the fixing notch 105. A first buffer pad 205 is fixedly installed on one side of the fixing sheet 204. Figure 6 As shown, when the groove of the metal sheet 202 is set upward, it is a positive capacitor sheet, and when the groove of the metal sheet 202 is set downward, it is a negative capacitor sheet. The fixing sheet 204 is set in the fixing notch 105 to effectively prevent the capacitor sheet 201 from moving.

[0031] A protective cover 106 is installed on the upper side of the mounting base 101. The protective cover 106 is arranged in cooperation with the groove 102. Two first notches 107 and two second notches 111 are provided on the protective cover 106. The two first notches 107 and the two second notches 111 are arranged opposite to each other. A first mounting seat 108 is installed in each first notch 107. Second mounting seats 118 are installed in the positive electrode notch 103 and the negative electrode notch 104. Each first mounting seat 108 is arranged corresponding to the corresponding second mounting seat 118. A fixing plate 109 is installed between the first mounting seat 108 and the corresponding second mounting seat 118. A group of second mounting holes 110 are provided on the fixing plate 109. The electrode contacts 203 are arranged in cooperation with the second mounting holes 110. The protective cover 106 can be made of transparent plastic, which can achieve a protective effect while making it more convenient to observe the components inside the groove 102.

[0032] A contact 1091 is installed on the fixed plate 109, and an electrical connector 1092 is installed in each second mounting hole 110. Each electrical connector 1092 is arranged in conjunction with a corresponding electrode contact 203. A toggle switch 1093 is installed between every two adjacent electrical connectors 1092. A connecting wire 1094 is installed in the fixed plate 109. The connecting wire 1094 connects the electrical connector 1092, the toggle switch 1093 and the contact 1091 inside the fixed plate 109 in series from top to bottom. The installed contact 1091 is connected to the circuit to which the capacitor needs to be connected, and then the number of capacitor plates 201 connected to the circuit is controlled by controlling the toggle switch 1093, thereby controlling the maximum electrical energy storage capacity of the capacitor. Installing the electrode contact 203 in the second mounting hole 110 can conveniently position the capacitor plate 201 in the groove 102 to prevent it from moving.

[0033] Two positioning notches 114 are defined on the mounting base 101, each of which is provided with a snap-fit ​​notch 115. The two snap-fit ​​notches 115 are disposed opposite each other. A third through hole 116 is defined at the center of the upper side of the protective cover 106. Two snap-fit ​​plates 117 are fixedly mounted on the protective cover 106. The snap-fit ​​plates 117 cooperate with the snap-fit ​​notches 115 to snap-fit ​​the protective cover 106 onto the mounting base 101.

[0034] A guide seat 112 is installed in each second notch 111, and a fixing pin 113 is threadedly connected to the guide seat 112. The fixing pin 113 is arranged corresponding to the first buffer pad 205. The height of one end of the capacitor plate 201 is fixed by the first buffer pad 205 so that it matches the other end of the capacitor plate 201 fixed through the second mounting hole 110.

[0035] The electrode contact 203 includes a power connection plate 2031, which is provided with a first mounting hole 2032 and a third notch 2033. The third notch 2033 is arranged in conjunction with the first mounting hole 2032. An elastic iron sheet 2034 is provided in the third notch 2033. The elastic iron sheet 2034 is lightning-shaped and has a weight-reducing hole 2035. The lightning-shaped elastic iron sheet 2034 can better fit the electrical interface, allowing the capacitor to be better connected to the circuit for operation, effectively preventing the interface from aging, loosening, and failing.

[0036] A fourth through hole 209 is provided on the capacitor sheet 201, and a fifth through hole 210 is provided on the first mica sheet 206, the second mica sheet 207 and the third mica sheet 208. The third through hole 116, the fourth through hole 209 and the fifth through hole 210 are of the same size. A stud 211 is inlaid and installed on the bottom of the mounting base 101. A screw hole is provided on the stud 211, and a bolt 213 is installed in the screw hole. Both ends of the bolt 213 have a slot 214, and a pressing piece 215 is sleeved on the bolt 213. The diameter of the bolt 213 is smaller than the diameter of the third through hole 116. The stud 211 is used to facilitate the installation of the mounting base 101 on the PCB board. The cooperation between the bolt 213 and the pressing piece 215 can limit the capacitor sheet 201. The slot 214 on the upper and lower sides of the bolt 213 can facilitate the disassembly of the mounting base 101.

[0037] It should be noted that when the present invention is used, the second mica sheet 207 is first placed at the bottom of the groove 102, and then the first mica sheet 206 is placed between the capacitor sheet 201 and the two adjacent capacitor sheets 201 in sequence, and finally the third mica sheet 208 is placed on the top capacitor sheet 201, and then the pressing sheet 215 is placed above the third mica sheet 208, and then the bolt 213 is passed through the third mica sheet 208, the capacitor sheet 201, the first mica sheet 206 and the second mica sheet 207 from top to bottom in sequence and the bolt 213 is installed on the stud 211, and the bolt 213 is fixed by the elastic capacitor sheet 201. By controlling the height of the pressing sheet 215 by controlling the bolt 213, the area between the two adjacent capacitor sheets 201 can be regulated. When the bolt 213 is tightened, the pressing sheet 215 is pressed down, so that the curvature of the two adjacent capacitor sheets 201 is reduced, so that the two are close to each other. The area increases and the maximum distance decreases, thereby increasing the number of electrons accumulated in the time between the two, thereby increasing the maximum capacity of the capacitor. When the bolt 213 is loosened, the pressing piece 215 rises, causing the two adjacent capacitor plates 201 to increase in curvature due to their own elastic force, thereby reducing the area close to each other and increasing the maximum distance, thereby reducing the number of electrons accumulated in the time between the two, thereby reducing the maximum capacity of the capacitor. The present invention can also fix the fixing plate 109 on the mounting base 101 and the protective cover 106, and the electrode contacts 203 of the capacitor plate 201 are all inserted into the electrical connector 1092 in the second mounting hole 110 and are arranged in conjunction with it. The two contacts 1091 are connected to the circuit into which the capacitor needs to be installed, and the number of capacitor plates 201 connected to the contacts 1091 is controlled by toggling the switch 1093, thereby changing the maximum capacitance of the capacitor when in use.

[0038] It should be further noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable mica sheet capacitor, characterized by: The invention comprises a mounting base (101), wherein a groove (102) is provided on the upper side of the mounting base (101), a positive electrode notch (103) and a negative electrode notch (104) are provided on the mounting base (101), and two symmetrically arranged fixing notches (105) are also provided on the mounting base (101), a plurality of capacitor plates (201) are installed in the groove (102), a first mica plate (206) is installed between each two adjacent capacitor plates (201), and the capacitor plates ( 201) includes a metal sheet (202), one side of the metal sheet (202) is provided with an electrode contact (203), and the opposite side of the metal sheet (202) is provided with two symmetrically arranged fixing sheets (204), the upper side of the mounting base (101) is matched with a protective cover (106) mounted thereon, the protective cover (106) is provided with two first notches (107) and two second notches (111), and each of the first notches (107) is provided with a first mounting seat (108), A second mounting seat (118) is installed in the positive electrode slot (103) and the negative electrode slot (104), a fixing plate (109) is installed between the first mounting seat (108) and the corresponding second mounting seat (118), a group of second mounting holes (110) are opened on the fixing plate (109), the electrode contact (203) is arranged in cooperation with the second mounting hole (110), a contact (1091) is installed on the fixing plate (109), and each of the second mounting holes (110) is provided with a plurality of second mounting holes (110). 0) are installed with electrical connectors (1092), each of the electrical connectors (1092) is arranged in conjunction with a corresponding electrode contact (203), a toggle switch (1093) is installed between every two adjacent electrical connectors (1092), and a connecting wire (1094) is installed in the fixed plate (109), and the connecting wire (1094) connects the electrical connectors (1092), the toggle switch (1093) and the contact (1091) inside the fixed plate (109) in series from top to bottom.

2. The adjustable mica sheet capacitor according to claim 1, characterized in that: The capacitor plate (201) is divided into a positive capacitor plate and a negative capacitor plate. The positive capacitor plate and the negative capacitor plate have the same structure. The groove (102) is square. The positive notch (103) and the negative notch (104) are both located on one side of the mounting base (101). The positive notch (103) and the fixed notch (105) are arranged opposite to each other. Each capacitor plate (201) is arranged corresponding to the corresponding positive notch (103) and negative notch (104). Each capacitor plate (201) is arranged corresponding to two fixed notches (105).

3. The adjustable mica sheet capacitor according to claim 1, characterized in that: A second mica sheet (207) is installed on the bottom side of the groove (102), a third mica sheet (208) is installed on the upper side of the uppermost capacitor sheet (201), and the second mica sheet (207) and the third mica sheet (208) are arranged correspondingly.

4. The adjustable mica sheet capacitor according to claim 1, characterized in that: The metal sheet (202) is arc-shaped, the metal sheet (202) is square, the fixing sheet (204) is arranged in cooperation with the fixing notch (105), and a first buffer pad (205) is fixedly mounted on one side of the fixing sheet (204).

5. The adjustable mica sheet capacitor according to claim 2, characterized in that: The protective cover (106) is arranged in cooperation with the groove (102), the two first notches (107) and the two second notches (111) are arranged opposite to each other, and each of the first mounting seats (108) is arranged corresponding to the corresponding second mounting seat (118).

6. The adjustable mica sheet capacitor according to claim 1, characterized in that: The electrode contact (203) comprises a power connection plate (2031), a first mounting hole (2032) is provided on the power connection plate (2031), a third notch (2033) is provided on the power connection plate (2031), the third notch (2033) is arranged in coordination with the first mounting hole (2032), an elastic iron sheet (2034) is provided in the third notch (2033), the elastic iron sheet (2034) is lightning-shaped, and a weight-reducing hole (2035) is provided on the elastic iron sheet (2034).

7. The adjustable mica sheet capacitor according to claim 3, characterized in that: A stud (211) is embedded and installed on the bottom of the mounting base (101), a screw hole is provided on the stud (211), a bolt (213) is installed in the screw hole, a single-shaped slot (214) is provided at both ends of the bolt (213), a pressing piece (215) is sleeved on the bolt (213), and the diameter of the bolt (213) is smaller than the diameter of the third through hole (116).

8. The adjustable mica sheet capacitor according to claim 7, characterized in that: A fourth through hole (209) is provided on the capacitor sheet (201), and a fifth through hole (210) is provided on the first mica sheet (206), the second mica sheet (207), and the third mica sheet (208); the third through hole (116), the fourth through hole (209), and the fifth through hole (210) are of the same size.

9. The adjustable mica sheet capacitor according to claim 1, characterized in that: Two positioning notches (114) are provided on the mounting base (101), each positioning notch (114) is provided with a snap notch (115), the two snap notches (115) are arranged opposite to each other, a third through hole (116) is provided at the center of the upper side of the protective cover (106), two snap plates (117) are fixedly installed on the protective cover (106), and the snap plates (117) are arranged in cooperation with the snap notches (115).

10. The adjustable mica sheet capacitor according to claim 7, characterized in that: A guide seat (112) is installed in each of the second notches (111), and a fixing pin (113) is connected to the inner thread of the guide seat (112), and the fixing pin (113) is arranged corresponding to the first buffer pad (205).

Images