CN222421706U - A multi-grid switch unit and a rotary switch - Google Patents
A multi-grid switch unit and a rotary switch Download PDFInfo
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- CN222421706U CN222421706U CN202323660275.1U CN202323660275U CN222421706U CN 222421706 U CN222421706 U CN 222421706U CN 202323660275 U CN202323660275 U CN 202323660275U CN 222421706 U CN222421706 U CN 222421706U
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- arc
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- moving contact
- extinguishing chamber
- side wall
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Abstract
本实用新型公开了一种多栅片开关单元及旋转开关，第一静触头引弧部的一端连接有第一静触头接触部，另一端连接有第一静触头连接部；第一灭弧室的内侧安装有第一磁系统组件，第二灭弧室的内侧安装有第二磁系统组件；第一灭弧室和第二灭弧室的内侧均为弧形；第一导磁体内侧设置有第一绝缘隔弧罩，第一导磁体的内部设置有第一永磁体，第一永磁体固定连接有第三导磁体。本实用新型能够在开关单元有限的体积下，增大灭弧室空间和金属栅片数量，同时利用弧形导磁体和永磁体、静触头引弧部配合的结构，产生驱使电弧向灭弧室运动的电磁力，实现电弧电压的显著提升，解决在开关单元体积尺寸不变的前提下提高开关单元分断电弧的电压等级。
The utility model discloses a multi-grid switch unit and a rotary switch, wherein one end of the first static contact arc-starting part is connected to the first static contact contact part, and the other end is connected to the first static contact connection part; the first arc-extinguishing chamber is provided with a first magnetic system component on the inner side, and the second arc-extinguishing chamber is provided with a second magnetic system component on the inner side; the inner sides of the first arc-extinguishing chamber and the second arc-extinguishing chamber are both arc-shaped; the inner side of the first magnetic conductor is provided with a first insulating arc-isolating cover, the first magnetic conductor is provided with a first permanent magnet inside, and the first permanent magnet is fixedly connected with a third magnetic conductor. The utility model can increase the arc-extinguishing chamber space and the number of metal grids under the limited volume of the switch unit, and at the same time, utilize the structure of the arc-shaped magnetic conductor, the permanent magnet, and the static contact arc-starting part to generate an electromagnetic force that drives the arc to move to the arc-extinguishing chamber, thereby achieving a significant increase in the arc voltage, and solving the problem of increasing the voltage level of the switch unit breaking the arc under the premise of the switch unit volume size remaining unchanged.
Description
Technical Field
The utility model belongs to the technical field of piezoelectric devices, and particularly relates to a multi-grid switch unit and a rotary switch.
Background
The rotary switch is a relatively common structure in the isolating switch, and is used as an important electrical element in a circuit system to play a key role in control and protection. For photovoltaic power generation, energy storage and other applications, rotary switches generally adopt a structure with multiple layers stacked to cope with breaking of direct current. However, along with the continuous improvement of the voltage of the photovoltaic and energy storage systems, how to improve the voltage level of the single-layer switch unit which can be disconnected on the premise of unchanged volume size through structural design and optimization has important significance on the improvement of the comprehensive performance, the reduction of the structure and the reduction of the cost of the rotary switch, and is also a challenge of the design of the rotary switch.
The patent application of a rotary switch is disclosed in patent publication No. CN219832464U, and is named as a rotary switch, which comprises a shell, a moving contact assembly, a fixed contact assembly and an arc extinguish chamber, wherein two ends of the moving contact assembly form two moving contact parts, the fixed contact assembly comprises two fixed contacts which are respectively positioned at two sides of the moving contact assembly, an upper opening clamping structure and a lower opening clamping structure are arranged on the fixed contacts, a clamping cavity for accommodating the moving contact parts positioned at a closing position is formed, the two moving contact parts are protruded relative to the peripheral surface of an insulating rotating frame, the arc extinguish chamber is provided with an inlet, and the breaking end of the moving contact part can extend into the arc extinguish chamber. The static contact is designed into an opening clamping structure, and the moving contact is lengthened and thinned, so that two moving contact parts which are raised relative to the insulating rotating frame are clamped by the static contact from the upper side and the lower side during closing, and can directly extend into an arc extinguishing chamber in the process of turning to switch off. The static contact of the patent application is provided with a clamping cavity for accommodating a movable contact part positioned at a closing position, the movable contact is a single-piece conductive contact piece fixed in an insulating rotating frame, the balance is a conventional structure of the switch, the arc is drawn only by the movable contact and the static contact, and the arc is extinguished by an arc extinguishing chamber, so that the electric arc voltage is low, and only the low voltage can be broken.
Disclosure of utility model
In order to overcome the problems in the prior art, the utility model aims to provide a multi-grid switch unit and a rotary switch, which can increase the space of an arc extinguishing chamber and the number of metal grids as much as possible under the limited volume of the switch unit, and simultaneously, the arc extinguishing chamber is driven to enter by electromagnetic force by utilizing the structure of matching an arc-shaped magnetizer with a toothed extension structure, a permanent magnet and an arc striking part of a fixed contact, so that the voltage level of the breaking arc of the switch unit is improved on the premise of unchanged volume and size of the switch unit, and the comprehensive performance of the rotary switch is promoted, the structure is reduced and the cost is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
A multi-gate switching unit comprising:
A housing comprising a base plate;
The movable contact support is arranged on the bottom plate of the shell;
the movable contact is rotatably arranged in the movable contact bracket;
The first arc-extinguishing chamber is arranged outside the moving contact support, and a second arc-extinguishing chamber is arranged on the opposite side of the center of the moving contact support along the first arc-extinguishing chamber;
The first fixed contact assembly is arranged outside the movable contact support, and a second fixed contact assembly is arranged on the opposite side of the first fixed contact assembly along the center of the movable contact support;
The first static contact assembly comprises a first static contact arc striking part, one end of the first static contact arc striking part is connected with a first static contact part, the other end of the first static contact arc striking part is connected with a first static contact connecting part, the first static contact part faces the moving contact, the structure of the second static contact assembly is the same as that of the first static contact assembly, a first magnetic system assembly is mounted on the inner side of the first arc extinguishing chamber, a second magnetic system assembly is mounted on the inner side of the second arc extinguishing chamber, the inner sides of the first arc extinguishing chamber and the second arc extinguishing chamber are arc-shaped, the first magnetic system assembly comprises a first magnetizer, a first insulation arc isolation cover is arranged on the inner side of the first magnetizer, a first permanent magnet is arranged in the first magnetizer, a third magnetizer is fixedly connected with the first permanent magnet, the other end of the third magnetizer contacts the first static contact part, the second magnetic system assembly is the same as that of the first magnetic system assembly, and a fourth magnetic system assembly is arranged in the second system assembly.
Optionally, the moving contact support is disc-shaped, a rotating shaft is arranged in the moving contact support, and the moving contact is connected with the rotating shaft of the moving contact support.
Optionally, the moving contact is a plate, and two ends of the moving contact are respectively provided with a first contact part of the moving contact and a second contact part of the moving contact.
Optionally, the first polarity of the first permanent magnet faces towards one side of the arc striking part of the first static contact, which faces away from the first arc extinguishing chamber, and the second polarity of the first permanent magnet faces towards the bottom of the first magnetizer.
Optionally, the first magnetizer includes a first side wall and a second side wall that are parallel to each other, and two ends of the first permanent magnet are respectively connected with the first side wall and the second side wall.
Optionally, a first toothed extension part is arranged on the side wall of the first side wall facing the closing movement area of the contact part of the moving contact and the first fixed contact, one or more first toothed extension parts are arranged on the side wall of the second side wall facing the closing movement area of the contact part of the moving contact and the first fixed contact, and one or more second toothed extension parts are arranged on the side wall of the second side wall facing the closing movement area of the contact part of the moving contact and the first fixed contact.
Optionally, the first insulating arc-isolating cover includes a first insulating arc-isolating wall and a second insulating arc-isolating wall, which cover the inner side of the first side wall and the inner side of the second side wall of the first magnetizer arc structure respectively.
Optionally, the first explosion chamber has a plurality of first metal bars piece of mutual interval, the both ends of first metal bars piece are respectively perpendicular fixedly connected with two first fixed splint.
Optionally, the axial direction of the first fixed contact connecting portion is perpendicular to the axial direction of the first fixed contact contacting portion.
A rotary switch has a plurality of the multi-grid switch units which are arranged in a stacked manner.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model utilizes the design of the static contact arc striking part and the multi-grid arc extinguishing chamber, increases the space of the arc extinguishing chamber and the number of metal grids as much as possible under the limited volume of the switch unit, simultaneously solves the problems that the arc is lengthened and enters the arc extinguishing grid as much as possible, utilizes the structure of the arc magnetizer with the tooth-shaped extension structure, the permanent magnet and the static contact arc striking part to cooperate, generates electromagnetic force for driving the arc to move towards the arc extinguishing chamber, is irrelevant to the direction of the arc current, realizes the remarkable improvement of the arc voltage by the cooling and cutting action of the metal grids on the arc, improves the voltage level of the breaking arc of the switch unit on the premise of unchanged volume and size of the switch unit, and promotes the improvement of the comprehensive performance, the reduction of the structure and the cost reduction of the rotary switch.
According to the utility model, the arc magnetizers and the permanent magnets are arranged at the two sides of the moving interval of the moving contact and the fixed contact, so that the nonpolar magnetic force drive is realized for the moving contact and the fixed contact, the arc voltage can be obviously improved, and the product performance is improved.
Further, the insulating arc wall in the magnetic system component of the utility model can generate gas which is beneficial to cooling the temperature of the arc under the high temperature effect of the arc, and the gas can also help to drive the arc into the arc extinguishing chamber, so that the voltage of the arc is raised more quickly, and the arc is extinguished effectively.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present utility model, and are not particularly limited. In the drawings:
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is an exploded view of an embodiment of the present utility model;
FIG. 3 is an internal schematic diagram of an embodiment of the present utility model;
FIG. 4 is a schematic view of the position of a stationary contact according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of a first magnetic system component of an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a third magnetizer according to an embodiment of the present utility model;
FIG. 7 is a schematic diagram of a second magnetic system component of an embodiment of the present utility model;
FIG. 8 is a schematic view of a moving contact holder according to an embodiment of the present utility model;
1, a shell;
2. a first stationary contact assembly; 21, a first static contact part; 22, a first static contact arc striking part; 23, a first static contact connecting part;
3. The second static contact assembly, 31, the second static contact part, 32, the second static contact arc striking part, 33, the second static contact connecting part;
4. the device comprises a moving contact, a first contact part of the moving contact, a second contact part of the moving contact, a moving contact bracket and a second contact part of the moving contact, wherein the moving contact is 41;
6. The first arc extinguishing chamber, 61, a first metal grid sheet, 62, a first fixed clamping plate;
7. The second arc extinguishing chamber, 71, second metal grid plates, 72, second fixed clamping plates;
8. First magnetic system component 81, first permanent magnet 82, first magnetizer 821, first side wall 8211, first tooth-shaped extension part 822, second side wall 8221, second tooth-shaped extension part 83, first insulation arc-separating cover 831, first insulation arc-separating wall 832, second insulation arc-separating wall;
9. Second magnetic system component 91, second permanent magnet 92, second magnetizer 921, third side wall 922, fourth side wall 93, second insulating arc-isolating cover 9211, third tooth-shaped extension portion 9221, fourth tooth-shaped extension portion 931, third insulating arc-isolating wall 932, fourth insulating arc-isolating wall;
10. Third magnetizer, 11, fourth magnetizer.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, shall fall within the scope of the utility model.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the multi-grid switch unit of the present utility model includes a housing 1, a first fixed contact assembly 2, a second fixed contact assembly 3, a moving contact 4, a moving contact bracket 5, a first arc extinguishing chamber 6, a second arc extinguishing chamber 7, a first magnetic system assembly 8, a second magnetic system assembly 9, a third magnetizer 10 and a fourth magnetizer.
As shown in fig. 3 and fig. 4, the first stationary contact assembly 2 and the second stationary contact assembly 3 are both disposed on the bottom plate of the housing 1, the housing 1 is a rectangular housing, and the first stationary contact assembly 2 and the second stationary contact assembly 3 are disposed at two diagonal positions of the housing 1 respectively.
The first static contact assembly 2 comprises a first static contact part 21, a first static contact arc striking part 22 and a first static contact connecting part 23, wherein one end of the first static contact arc striking part 22 is connected with the first static contact part 21, and the other end is connected with the first static contact connecting part 23. The other end of the first fixed contact connecting part 23 is vertically connected with the inner wall of the housing 1. The axial direction of the first stationary contact connecting portion 23 is perpendicular to the axial direction of the first stationary contact contacting portion 21. The first fixed contact portion 21, the first fixed contact arc striking portion 22 and the first fixed contact connecting portion 23 are all plate members and are all horizontally arranged.
The second fixed contact assembly 3 comprises a second fixed contact part 31, a second fixed contact arc striking part 32 and a second fixed contact connecting part 33, wherein one end of the second fixed contact arc striking part 32 is connected with the second fixed contact part 31, and the other end is connected with the second fixed contact connecting part 33. The other end of the second fixed contact connecting portion 33 is vertically connected to the inner wall of the housing 1. The second fixed contact assembly 3 has the same structure as the first fixed contact assembly 2.
The two ends of the moving contact 4 are provided with a moving contact first contact part 41 and a moving contact second contact part 42. The first contact portion 41 of the moving contact and the second contact portion 42 of the moving contact are connected by a connecting piece, the connecting piece is a plate or a rod, and the center of the connecting piece is fixed at the center of the moving contact bracket 5.
The movable contact support 5 is rotatably connected to the center of the housing 1, and the movable contact support 5 can perform rotational movement relative to the housing 1.
As shown in fig. 8, the moving contact 4 is mounted inside the moving contact holder 5, and the moving contact 4 performs a contact and separation operation of the moving contact first contact portion 41 and the first fixed contact portion 21, and a contact and separation operation of the moving contact second contact portion 42 and the second fixed contact portion 31 by a rotational movement.
The first arc extinguishing chamber 6 and the second arc extinguishing chamber 7 are symmetrically arranged in the shell 1.
The first arc-extinguishing chamber 6 is arranged in a sector-shaped extension area formed by the first contact part 41 of the moving contact and the first contact part 21 of the first fixed contact during the rotation movement of the moving contact 4, the first arc-extinguishing chamber 6 is provided with a plurality of first metal grid sheets 61 which are mutually spaced, and two ends of each first metal grid sheet 61 are respectively and vertically fixedly connected with two first fixed clamping plates 62. The first metal grid 61 is disposed along an extension area of the opening and closing movement area of the moving contact first contact portion 41 and the first fixed contact portion 21.
The second arc-extinguishing chamber 7 is arranged in a sector-shaped extension area formed by the second contact part 42 of the moving contact and the contact part 31 of the second fixed contact during the rotary motion of the moving contact 4, the first arc-extinguishing chamber 6 and the second arc-extinguishing chamber 7 have the same structure, the second arc-extinguishing chamber 7 is provided with a plurality of second metal grid sheets 71 which are mutually spaced, and two ends of the second metal grid sheets 71 are respectively and vertically fixedly connected with two second fixed clamping plates 72. The second metal gate 71 is disposed along an extension area of the opening/closing movement area of the second contact portion 42 of the moving contact and the second contact portion 31 of the second fixed contact.
As shown in fig. 5 and 6, the first magnetic system assembly 8 and the second magnetic system assembly 9 are symmetrically disposed in the housing 1, and the first magnetic system assembly 8 includes a first permanent magnet 81, a first magnetizer 82, and a first insulating arc-isolating cover 83.
The first polar surface of the first permanent magnet 81 faces to the side of the first static contact striking part 22 facing away from the first arc extinguishing chamber 6. The second polar surface of the first permanent magnet 81 faces the bottom of the first magnetizer 82 and is fixedly connected with the third magnetizer 10 in contact. The other end of the third magnetizer 10 is contacted with the first static contact arc striking part 22, and the third magnetizer 10 is parallel to the grid plate of the first arc extinguishing chamber 6.
The first magnetizer 82 has an arc structure, and the first permanent magnet 81 is disposed inside the arc structure of the first magnetizer 82. The first magnetizer 82 includes a first side wall 821 and a second side wall 822 with the same structure and size, and the first side wall 821 and the second side wall 822 are both arc shapes extending along an arc track of the opening and closing movement of the first contact portion 41 of the moving contact. The first side wall 821 and the second side wall 822 are disposed between the opening and closing movement region of the moving contact first contact portion 41 and the first fixed contact portion 21 and the first metal grid 61.
One end of the first permanent magnet 81 is vertically connected to the first side wall 821, and the other end is vertically connected to the second side wall 822.
The first side wall 821 has a first toothed extension portion 8211 facing the opening and closing movement region of the first contact portion 41 and the first fixed contact portion 21 of the moving contact, the first toothed extension portion 8211 is one or more, the second side wall 822 has a second toothed extension portion 8221 facing the opening and closing movement region of the first contact portion 41 and the first fixed contact portion 21 of the moving contact, and the second toothed extension portion 8221 is one or more.
The first and second toothed extending portions 8211 and 8221 extend on two sides of the opening and closing movement region of the first contact portion 41 of the moving contact, so that an arc generated between the first contact portion 41 of the moving contact and the first fixed contact portion 21 is located between the first and second toothed extending portions 8211 and 8221.
The first insulating arc-isolating cover 83 includes a first insulating arc-isolating wall 831 and a second insulating arc-isolating wall 832, which respectively cover the inner side of the first side wall 821 and the inner side of the second side wall 822 of the arc structure of the first magnetic conductor 82, so as to insulate the arcing region of the first arc extinguishing chamber 6 from the first magnetic conductor 82.
As shown in fig. 7, the second magnetic system assembly 9 includes a second permanent magnet 91, a second magnetizer 92, and a second insulating arc isolation cover 93, where a first polarity surface of the second permanent magnet 91 faces toward a side of the second fixed contact arc striking portion 32 opposite to the second arc extinguishing chamber 7, the second magnetizer 92 is an arc structure, the second permanent magnet 91 is disposed inside the arc structure of the second magnetizer 92, a second polarity surface of the second permanent magnet 91 faces toward a bottom of the arc structure of the second magnetizer 92, and the structures of the second permanent magnet 91, the third side wall 921 and the fourth side wall 921 are the same in size, the third side wall 921 is an arc extending along an arc track of the opening and closing motion of the second contact portion 42, and the fourth side wall 921 is an arc extending along an arc track of the opening and closing motion of the second contact portion 42.
The third side wall 921 has a third toothed extension portion 9211 facing the opening and closing movement region of the second contact portion 42 and the second fixed contact connecting portion 33, the third toothed extension portion 9211 is one or more, the fourth side wall 922 has a fourth toothed extension portion 9221 facing the opening and closing movement region of the second contact portion 42 and the second fixed contact connecting portion 33, and the fourth toothed extension portion 9221 is one or more.
The third side wall 921 of the second magnetizer 92 has a third tooth-shaped extension portion 9211 and a fourth tooth-shaped extension portion 9221 of the fourth side wall 922 that extend on both sides of the opening and closing movement area of the second contact portion 42 of the moving contact, so that an arc generated between the second contact portion 42 of the moving contact and the second fixed contact connecting portion 33 is located between the third tooth-shaped extension portion 9211 and the fourth tooth-shaped extension portion 9221.
The third side wall 921 and the fourth side wall 922 are disposed between the opening and closing movement area of the second contact portion 42 and the second fixed contact portion 31 of the moving contact and the second metal gate 71 of the second arc extinguishing chamber 7.
The second insulating arc-isolating cover 93 has a third insulating arc-isolating wall 931 and a fourth insulating arc-isolating wall 932, which cover the inner side of the third side wall 921 and the inner side of the fourth side wall 922 of the arc structure of the second magnetic conductor 92, respectively, to insulate the arcing region of the second arc extinguishing chamber 7 from the second magnetic conductor 92.
One end of the fourth magnetizer 11 is contacted with the second static contact arc striking part 32, and the other end is parallel to the grid plate of the second arc extinguishing chamber 7 which is adjacent to the fourth magnetizer.
The utility model relates to a multi-grid switch unit, which is characterized in that when in use:
When the switch-on is performed, the moving contact 4 rotates clockwise for 90 degrees, and two ends of the moving contact 4 are respectively communicated with the first fixed contact part 21 and the second fixed contact part 31.
When the switch-off is carried out, the moving contact 4 rotates anticlockwise, the moving contact 4 is separated from the first fixed contact component 2 and the second fixed contact component 3, in the separation process, the first magnetic system component 8 and the second magnetic system component 9 can provide nonpolar magnetic field force to drive an electric arc generated between the moving contact 4 and the first fixed contact component 2 and the second fixed contact component 3 to move towards the first arc-extinguishing chamber 6 and the second arc-extinguishing chamber 7, and on the other hand, the first insulating arc-isolating cover 83 and the second insulating arc-isolating cover 93 in the first magnetic system component 8 and the second magnetic system component 9 can also generate gas which is favorable for cooling the temperature of the electric arc under the high temperature effect of the electric arc, and the gas is also favorable for driving the electric arc to enter the first arc-extinguishing chamber 6 and the second arc-extinguishing chamber 7, so that the electric arc voltage is improved more rapidly, and the electric arc is extinguished effectively.
The device elements in the above embodiments are conventional device elements unless otherwise specified, and the structural arrangement, operation or control modes in the embodiments are conventional arrangement, operation or control modes in the art unless otherwise specified.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323660275.1U CN222421706U (en) | 2023-12-29 | 2023-12-29 | A multi-grid switch unit and a rotary switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323660275.1U CN222421706U (en) | 2023-12-29 | 2023-12-29 | A multi-grid switch unit and a rotary switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222421706U true CN222421706U (en) | 2025-01-28 |
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ID=94366714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323660275.1U Active CN222421706U (en) | 2023-12-29 | 2023-12-29 | A multi-grid switch unit and a rotary switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222421706U (en) |
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2023
- 2023-12-29 CN CN202323660275.1U patent/CN222421706U/en active Active
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