CN212161670U - Rotary grounding switch - Google Patents
Rotary grounding switch Download PDFInfo
- Publication number
- CN212161670U CN212161670U CN202021076087.8U CN202021076087U CN212161670U CN 212161670 U CN212161670 U CN 212161670U CN 202021076087 U CN202021076087 U CN 202021076087U CN 212161670 U CN212161670 U CN 212161670U
- Authority
- CN
- China
- Prior art keywords
- contact
- movable
- moving contact
- rotary
- finger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model discloses a rotary type grounding switch, which comprises a mounting frame, a grounding seat, a moving contact and a static contact; the static contact comprises a longitudinal part, an arc part and a transverse part, one end part of the transverse part is connected to the grounding seat, and the upper end part of the longitudinal part is in arc transition connection with the other end part of the transverse part through the arc part; the hinged end of the moving contact is hinged to the mounting frame, and the movable end of the moving contact is used for being abutted to or separated from the longitudinal part in the rotating process of the moving contact. The utility model discloses can produce decurrent electrodynamic force in order to promote the combined floodgate, avoid the moving contact at combined floodgate in-process spring, can improve the performance of closing, can also shorten the stroke that the moving contact combined floodgate, separating brake, can reduce overall dimension, reduce the space that occupies.
Description
Technical Field
The utility model relates to a rotary type earthing switch.
Background
At present, in a medium-voltage system, an earthing switch is used as a safety earthing device for power failure maintenance, and can bear current which does not work normally within a certain time so as to ensure the safety of maintenance personnel. The moving contact and the fixed contact are key components of the grounding switch, current flows from the moving contact to the fixed contact in the traditional grounding switch, the direction of the current in the fixed contact is downward, and a magnetic field generated by the downward current acts on the moving contact to generate upward electrodynamic force on the moving contact, so that the closing of the moving contact is blocked, and the moving contact is caused to bounce seriously in the closing process. In addition, in the conventional grounding switch, the moving contact needs to rotate a larger stroke to be completely separated from the fixed contact when being switched off, so that the grounding switch has a larger size and occupies a larger space.
In addition, the moving contact and the static contact of the traditional grounding switch are both made of red copper, have low melting points and are easy to be ablated by electric arcs in work, so that the contacts are welded; the moving contact is integrally silvered, so that the manufacturing cost is increased, and the moving contact is easy to wear and can influence the working stability of the whole electrical system.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a rotary type earthing switch, it can produce decurrent electric power in order to promote combined floodgate, avoids the moving contact at combined floodgate in-process spring, can improve the performance of closing, can also shorten the stroke that the moving contact combined floodgate, separating brake, can reduce overall dimension, reduces the space that occupies.
In order to solve the technical problem, the technical scheme of the utility model is that: a rotary type grounding switch comprises an installation frame, a grounding seat, a moving contact and a static contact; wherein the content of the first and second substances,
the static contact comprises a longitudinal part, an arc part and a transverse part, one end part of the transverse part is connected to the grounding seat, and the upper end part of the longitudinal part is in arc transition connection with the other end part of the transverse part through the arc part;
the hinged end of the moving contact is hinged to the mounting frame, and the movable end of the moving contact is used for being abutted to or separated from the longitudinal part in the rotating process of the moving contact.
Further provides a concrete structure of the moving contact, and the moving contact comprises two contact fingers; wherein the content of the first and second substances,
the hinged end of the contact finger is hinged to the mounting frame;
the movable end of one of the contact fingers is used for abutting against one side surface of the longitudinal part;
the movable end of the other contact finger is used for abutting against the other side surface of the longitudinal part.
Furthermore, the movable end of the contact finger is provided with at least one contact, and the contact finger is abutted against the longitudinal part through the contact.
Further, in order to provide dynamic thermal stability, the contact is welded at the movable end of the contact finger by silver brazing, and/or the contact is made of copper-tungsten alloy.
In order to further reduce the abrasion of the contact, a separation groove and a separation hole are formed in the movable end of the contact finger;
one end of the separation groove extends to the separation hole, and the other end of the separation groove is open;
the movable end of the contact finger is provided with two contacts, and two sides of the separation groove are respectively provided with one contact.
Further, the separation groove is located on a central axis of the contact finger, and the two contacts are symmetrically arranged around the separation groove.
And further, in order to reduce contact resistance and save cost, a silver coating is arranged at the movable end of the movable contact.
Further, when the moving contact is just in contact with the longitudinal portion, the movable end of the moving contact is higher than the hinged end of the moving contact.
Further in order to maintain the position of the moving contact, the rotary grounding switch further comprises a support seat connected to the mounting frame, and the support seat is used for supporting the movable end of the moving contact when the moving contact is abutted to the longitudinal portion in place.
Furthermore, the static contact is provided with at least one, and the moving contact is provided with at least one and corresponds to the static contact one by one.
After the technical scheme is adopted, when the moving contact is abutted to the longitudinal part, current flows from the moving contact to the fixed contact, the direction of the current in the fixed contact is upward and then gradually becomes horizontal, the current in the fixed contact can generate an electromagnetic field acting on the moving contact, the electromagnetic field can generate downward electrodynamic force F to the moving contact, the moving contact can be favorably promoted to be switched on, the moving contact is prevented from being bounced off after being switched on, and the switching-off performance of the rotary grounding switch is improved. In addition, in the process of opening the moving contact and the static contact, the moving contact can be separated from the arc part in the static contact only by rotating a small angle, namely, the moving contact can be opened only by rotating a small stroke, so that the requirement of short stroke of the moving contact during closing and opening is met, the whole size of the rotary grounding switch can be smaller and more compact, and the occupied space is reduced.
The movable contact comprises two contact fingers, wherein the movable end of one contact finger abuts against one side face of the longitudinal portion, and the movable end of the other contact finger abuts against the other side face of the longitudinal portion, so that the contact stability and reliability of the movable contact and the fixed contact are improved, the mechanical vibration resistance of the rotary grounding switch is also improved, and the movable contact and the fixed contact are prevented from loosening. The arrangement of the separation groove can reduce the rigidity of the movable end of the contact finger, so that when the contact is abutted against the static contact, the movable end of the contact finger can slightly deform, and the abrasion of the contact is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a rotary grounding switch of the present invention;
fig. 2 is a front view of the rotary grounding switch according to the present invention during opening;
fig. 3 is a front view of the rotary grounding switch according to the present invention during closing;
fig. 4 is a schematic structural diagram of the current, electromagnetic field and electromotive force in the rotary grounding switch of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 to 4, a rotary type grounding switch includes an installation frame 1, a grounding seat 2, a moving contact 3 and a static contact 4; wherein the content of the first and second substances,
the static contact 4 comprises a longitudinal portion 5, an arc portion 6 and a transverse portion 7, one end of the transverse portion 7 is connected to the grounding seat 2, and the upper end of the longitudinal portion 5 is in arc transition connection with the other end of the transverse portion 7 through the arc portion 6;
the hinged end of the moving contact 3 is hinged to the mounting frame 1, the movable end of the moving contact 3 is used for being abutted to or separated from the longitudinal portion 5 in the rotating process of the moving contact 3, when the moving contact 3 is abutted to the longitudinal portion 5, the moving contact 3 is electrically connected with the fixed contact 4 and is switched on, and when the moving contact 3 is separated from the longitudinal portion 5, the moving contact 3 is electrically disconnected from the fixed contact 4 and is switched off.
Specifically, when the movable contact 3 abuts against the longitudinal portion 5, a current flows from the movable contact 3 to the fixed contact 4, the direction of the current in the fixed contact 4 is upward and then gradually becomes horizontal, the current in the fixed contact 4 generates an electromagnetic field acting on the movable contact 3, the electromagnetic field generates a downward electromotive force F on the movable contact 3, and therefore the movable contact 3 is facilitated to be switched on, the movable contact 3 is not easily bounced off after being switched on, and the switching performance of the rotary type grounding switch is improved. In addition, in the process of opening the moving contact 3 and the static contact 4, the moving contact 3 can be separated from the arc part 6 in the static contact 4 only by rotating a small angle, namely, the moving contact 3 can be opened only by rotating a small stroke, so that the requirement of short stroke when the moving contact 3 is closed and opened is met, the whole size of the rotary grounding switch can be made smaller and more compact, and the occupied space is reduced. More specifically, if the arc portion 6 is not provided, the movable contact 3 needs to rotate by a large angle to be completely separated from the stationary contact 4.
As shown in fig. 1, the movable contact 3 is, for example, but not limited to, a structure including two contact fingers 8; wherein the content of the first and second substances,
the hinged end of the contact finger 8 is hinged on the mounting rack 1;
the movable end of one of the contact fingers 8 is used for abutting against one side surface of the longitudinal part 5;
the movable end of the other contact finger 8 is used for abutting against the other side surface of the longitudinal part 5; in this embodiment, the two contact fingers 8 have the same structural size, and the arrangement of the two contact fingers 8 can improve the stability and reliability of the contact between the moving contact 3 and the static contact 4, and can also improve the mechanical shock resistance of the rotary grounding switch, thereby preventing the moving contact 3 and the static contact 4 from loosening.
As shown in fig. 1 and 2, the movable end of the contact finger 8 may be provided with at least one contact 9, and the contact finger 8 abuts against the longitudinal portion 5 through the contact 9.
In this embodiment, the contact 9 may be soldered to the movable end of the contact finger 8 by silver soldering, the contact 9 may be made of copper-tungsten alloy, and the dynamic thermal stability of the rotary type ground switch can be improved by the above design, so as to prevent the movable contact 3 and the static contact 4 from being welded together.
As shown in fig. 1 to 3, the movable end of the contact finger 8 may be provided with a separation groove 10 and a separation hole 11;
one end of the separation groove 10 extends to the separation hole 11, and the other end of the separation groove 10 is open;
the movable end of the contact finger 8 is provided with two contacts 9, and two sides of the separation groove 10 are respectively provided with one contact 9; specifically, the provision of the separation groove 10 can reduce the rigidity of the movable end of the contact finger 8, so that the movable end of the contact finger 8 can be slightly deformed when the contact 9 abuts against the stationary contact 4, thereby reducing the wear of the contact 9.
In this embodiment, the separation groove 10 may be located on a central axis of the contact finger 8, and the two contacts 9 may be symmetrically disposed about the separation groove 10.
In this embodiment, the movable end of the movable contact 3 may be provided with a silver plating layer, and compared with the traditional design of integrally plating silver on the movable contact 3, the cost is greatly saved by only providing the silver plating layer on the movable end of the movable contact 3.
As shown in fig. 1 to 3, when the movable contact 3 is just in contact with the longitudinal portion 5, the movable end of the movable contact 3 is higher than the hinged end of the movable contact 3.
As shown in fig. 1 to 3, the rotary grounding switch further includes a supporting seat 12 connected to the mounting frame 1, wherein the supporting seat 12 is used for supporting the movable end of the movable contact 3 when the movable contact 3 abuts against the longitudinal portion 5 in place, so as to maintain the position of the movable contact 3 and prevent the movable contact 3 from falling downward and separating from the longitudinal portion 5.
As shown in fig. 1, at least one static contact 4 is provided, and at least one moving contact 3 is provided and corresponds to the static contact 4 one to one.
The working principle of the utility model is as follows:
when the moving contact 3 abuts against the longitudinal portion 5, current flows from the moving contact 3 to the fixed contact 4, the direction of the current in the fixed contact 4 is upward and then gradually becomes horizontal, the current in the fixed contact 4 can generate an electromagnetic field acting on the moving contact 3, the electromagnetic field can generate downward electromotive force F on the moving contact 3, the moving contact 3 can be conveniently switched on, the moving contact 3 is prevented from being flicked after being switched on, and the switching-off performance of the rotary grounding switch is improved. In addition, in the process of opening the moving contact 3 and the static contact 4, the moving contact 3 can be separated from the arc part 6 in the static contact 4 only by rotating a small angle, namely, the moving contact 3 can be opened only by rotating a small stroke, so that the requirement of short stroke when the moving contact 3 is closed and opened is met, the whole size of the rotary grounding switch can be made smaller and more compact, and the occupied space is reduced.
The moving contact 3 comprises two contact fingers 8, wherein the movable end of one contact finger 8 is abutted against one side surface of the longitudinal part 5, and the movable end of the other contact finger 8 is abutted against the other side surface of the longitudinal part 5, so that the contact stability and reliability of the moving contact 3 and the static contact 4 are improved, the mechanical vibration resistance of the rotary grounding switch is also improved, and the moving contact 3 and the static contact 4 are prevented from loosening. The arrangement of the separation groove 10 can reduce the rigidity of the movable end of the contact finger 8, so that when the contact 9 abuts against the static contact 4, the movable end of the contact finger 8 can slightly deform, thereby reducing the wear of the contact 9.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A rotary type grounding switch is characterized by comprising an installation frame (1), a grounding seat (2), a movable contact (3) and a static contact (4); wherein the content of the first and second substances,
the static contact (4) comprises a longitudinal portion (5), an arc portion (6) and a transverse portion (7), one end portion of the transverse portion (7) is connected to the grounding seat (2), and the upper end portion of the longitudinal portion (5) is in arc transition connection with the other end portion of the transverse portion (7) through the arc portion (6);
the hinged end of the moving contact (3) is hinged to the mounting frame (1), and the movable end of the moving contact (3) is used for being abutted to or separated from the longitudinal part (5) in the rotating process of the moving contact (3).
2. The rotary grounding switch according to claim 1, wherein the movable contact (3) comprises two contact fingers (8); wherein the content of the first and second substances,
the hinged end of the contact finger (8) is hinged on the mounting rack (1);
the movable end of one of the contact fingers (8) is used for abutting against one side surface of the longitudinal part (5);
the movable end of the other contact finger (8) is used for abutting against the other side surface of the longitudinal part (5).
3. The rotary earthing switch according to claim 2, characterized in that the movable end of said contact finger (8) is provided with at least one contact point (9), said contact finger (8) being urged against said longitudinal portion (5) by said contact point (9).
4. The rotary earthing switch according to claim 3, characterized in that said contact (9) is silver soldered to the free end of said contact finger (8), and/or said contact (9) is made of copper-tungsten alloy.
5. The rotary grounding switch of claim 3,
the movable end of the contact finger (8) is provided with a separation groove (10) and a separation hole (11);
one end of the separation groove (10) extends to the separation hole (11), and the other end of the separation groove (10) is open;
the movable end of the contact finger (8) is provided with two contacts (9), and two sides of the separation groove (10) are respectively provided with one contact (9).
6. The rotary earthing switch according to claim 5, characterized in that said separation groove (10) is located on the central axis of said contact finger (8), and said two contacts (9) are symmetrically arranged with respect to said separation groove (10).
7. The rotary type grounding switch according to claim 1, wherein the movable end of the movable contact (3) is provided with a silver coating.
8. The rotary earthing switch according to claim 1, characterized in that when said movable contact (3) is just in contact with said longitudinal portion (5), the movable end of said movable contact (3) is higher than the hinged end of said movable contact (3).
9. The rotary earthing switch according to claim 1, characterized in that it further comprises a support (12) attached to said mounting frame (1), said support (12) being adapted to support the movable end of said movable contact (3) when said movable contact (3) is in position abutting against said longitudinal portion (5).
10. The rotary type grounding switch according to claim 1, wherein at least one stationary contact (4) is provided, and at least one movable contact (3) is provided and corresponds to the stationary contact (4) in a one-to-one manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021076087.8U CN212161670U (en) | 2020-06-12 | 2020-06-12 | Rotary grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021076087.8U CN212161670U (en) | 2020-06-12 | 2020-06-12 | Rotary grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212161670U true CN212161670U (en) | 2020-12-15 |
Family
ID=73702164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021076087.8U Active CN212161670U (en) | 2020-06-12 | 2020-06-12 | Rotary grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212161670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192789A (en) * | 2021-03-24 | 2021-07-30 | 天津平高智能电气有限公司 | On-pole isolating switch and wiring terminal thereof |
-
2020
- 2020-06-12 CN CN202021076087.8U patent/CN212161670U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192789A (en) * | 2021-03-24 | 2021-07-30 | 天津平高智能电气有限公司 | On-pole isolating switch and wiring terminal thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1914766B1 (en) | Movable contactor of circuit breaker and fabrication method for finger thereof | |
| WO2017186061A1 (en) | Circuit breaker contact system and circuit breaker | |
| CN212161670U (en) | Rotary grounding switch | |
| JPWO2009041246A1 (en) | Contact member manufacturing method, contact member and switch | |
| CN1043220A (en) | Vacuum switching device | |
| CN111952111B (en) | Double-fracture quick vacuum arc extinguish chamber | |
| CN113161213A (en) | Contact system of circuit breaker | |
| CN101615534B (en) | Permanent magnet opening and closing type DC intelligent circuit breaker | |
| CN204204776U (en) | A kind of combination auxiliary switch on breaker mechanism | |
| CN208077921U (en) | Breaker | |
| US6770828B2 (en) | System and method for electrical contacts and connections in switches and relays | |
| CN214797307U (en) | Contact system of circuit breaker | |
| CN216119949U (en) | Three-layer composite rivet electric contact in high-voltage switch equipment | |
| CN210897016U (en) | Step composite silver contact | |
| CN210403631U (en) | Driving mechanism and circuit breaker with same | |
| CN214477153U (en) | Three-phase isolating switch device | |
| CN204966380U (en) | Vacuum arc extinguishing chamber | |
| CN213277835U (en) | Electrical contact assembly | |
| CN210489574U (en) | Circuit breaker contact system | |
| JP2523474B2 (en) | Gas circuit breaker | |
| CN212182236U (en) | Novel contact | |
| CN203631363U (en) | Load switch arc extinguishing grid mechanism | |
| CN214428584U (en) | Static contact of circuit breaker | |
| CN202585147U (en) | Big current switch contact rivet possessing multiple contacts | |
| CN212967500U (en) | Swing rod switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |