CN219658627U - Contactor for high current - Google Patents
Contactor for high current Download PDFInfo
- Publication number
- CN219658627U CN219658627U CN202321375820.XU CN202321375820U CN219658627U CN 219658627 U CN219658627 U CN 219658627U CN 202321375820 U CN202321375820 U CN 202321375820U CN 219658627 U CN219658627 U CN 219658627U
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- Prior art keywords
- contact
- assembly
- contactor
- conductive component
- conductive
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- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The utility model provides a contactor for high current, which comprises a first conductive component and at least one second conductive component, wherein the first conductive component comprises a first contact bridge and first contact components which are respectively arranged at two ends of the first contact bridge; at least one second conductive component and the parallelly connected setting of first conductive component, the second conductive component includes the second contact bridge, the one end of second contact bridge is equipped with the second contact component, the other end passes through the flexible coupling and links to each other with the wiring end, compare with the mode of contacting through two contacts in the prior art, the contact between flexible coupling and the second contact bridge is inseparabler for contact resistance is littleer, the temperature that produces when can greatly reduced electric current passes through like this, has reduced the temperature rise, thereby can improve the current-carrying capacity of the second conductive component greatly.
Description
Technical Field
The utility model relates to the technical field of contactors, in particular to a contactor for high current.
Background
The contactor is a common type of piezoelectric device element, has wide application, and is often applied to electric appliances which are used for switching on and off alternating current/direct current main circuits and large-capacity control circuits remotely and frequently. The main control object is an electric motor, and can also be used for controlling electric loads such as electric heating equipment, electric lighting, electric welding machines, capacitor banks and the like.
The existing contactor comprises a base, wherein a contact bridge mechanism capable of moving in the vertical direction and used for breaking is arranged on the base, the contact bridge mechanism comprises a support and a contact bridge arranged at the top of the support, contact assemblies are arranged on two sides of the contact bridge mechanism, each contact assembly comprises a wiring board and a contact piece arranged on the connecting board, the contact piece is positioned at the bottom of the contact bridge, a fixed contact is arranged on the contact piece, and a movable contact capable of being in contact with the fixed contact for communication or separation for disconnection is arranged on the contact bridge. The contact resistance exists between the movable contact and the static contact, temperature rise is generated when current passes through the contact resistance, when the contactor is in a use environment with load current being more than 1000A (commonly referred to as high current being more than 1000A), high current split is generally realized by adopting a mode that a plurality of groups of contact bridges are connected in parallel, and as each group of contact bridges comprises two groups of contacts and each group of contact is a heating source, the plurality of groups of contact bridges can bring a plurality of heating sources, when the heating sources are more, the internal temperature of the contactor is easily overhigh, so that an internal insulating part is aged, and the contactor is damaged and cannot be used.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defects that a plurality of heating sources are brought by a plurality of groups of contact bridges in the prior art, and the internal insulation part of the contactor is aged due to overhigh internal temperature, so that the contactor for high current is provided for reducing temperature rise.
To this end, the utility model provides a contactor for high currents, comprising a first conductive assembly and at least one second conductive assembly, the first conductive assembly comprising a first contact bridge and first contact assemblies arranged at both ends of the first contact bridge; at least one second conductive component is arranged in parallel with the first conductive component, the second conductive component comprises a second contact bridge, one end of the second contact bridge is provided with a second contact component, and the other end of the second contact bridge is connected with the wiring terminal through a soft connection.
The first contact assembly of the first conductive assembly is turned on before the second contact assembly of the second conductive assembly, and then is disconnected after the second contact assembly.
The first contact bridge and the second contact bridge move synchronously, and the switching-on stroke of the first contact assembly is smaller than that of the second contact assembly.
The first contact assembly and the second contact assembly are simultaneously connected and disconnected.
The two ends of the flexible connection can be fixedly connected with the corresponding parts through bolt connection or welding or riveting.
One side of the first conductive component can be connected with at least one first conductive component in series.
The first conductive assembly comprises first wiring boards which are respectively arranged on two sides of the first conductive assembly, the second conductive assembly comprises second wiring boards which are respectively arranged on two sides of the second conductive assembly, and the first wiring boards and the second wiring boards which are positioned on the same side are connected through T-shaped connecting pieces.
The first conductive component and the second conductive component comprise contact pieces and arc-extinguishing plates which are arranged on the first wiring board and the second wiring board, the arc-extinguishing plates are arranged on the contact pieces, the first contact component and the second contact component comprise movable contacts and fixed contacts, the fixed contacts are arranged on the contact pieces, and the movable contacts are arranged at the bottoms of the first contact bridge and the second contact bridge.
The contact is C-shaped, the arc extinguishing plate is provided with a C-shaped installation part and a vertical flat plate part arranged on one side of the installation part and away from the first contact bridge, the flat plate part is integrally formed with a bottom plate of the installation part, an insertion hole for the front end of a top plate of the installation part and one end of the contact to be inserted is formed in the flat plate part, and an opening for the contact to be horizontally inserted is formed in one end of the installation part, which is far away from the flat plate part.
The first wiring board and the second wiring board are fixedly connected with the contact piece and the arc-extinguishing plate through bolt assemblies.
The technical scheme of the utility model has the following advantages:
1. the utility model provides a contactor for high current, which comprises a first conductive component and at least one second conductive component, wherein the first conductive component comprises a first contact bridge and first contact components which are respectively arranged at two ends of the first contact bridge; at least one second conductive component and the parallelly connected setting of first conductive component, the second conductive component includes the second contact bridge, the one end of second contact bridge is equipped with the second contact component, the other end passes through the flexible coupling and links to each other with the wiring end, compare with the mode of contacting through two contacts in the prior art, the contact between flexible coupling and the second contact bridge is inseparabler for contact resistance is littleer, the temperature that produces when can greatly reduced electric current passes through like this, has reduced the temperature rise, thereby can improve the current-carrying capacity of the second conductive component greatly.
2. According to the contactor for high current, the first contact assembly of the first conductive assembly is connected before the second contact assembly of the second conductive assembly, and then the second contact assembly is disconnected, or the first contact assembly and the second contact assembly are connected and disconnected simultaneously, because the second conductive assembly only has one contact assembly (namely only has one breakpoint), and the first conductive assembly has two contact assemblies (namely has two breakpoints), the disconnection capacity of the first conductive assembly is stronger than that of the second conductive assembly, when the contactor is in a use environment with the load current of more than 1000A, for example, the second conductive assembly is disconnected after the first conductive assembly, and the second conductive assembly with poor disconnection capacity is easy to generate a large arc due to insufficient disconnection distance, so that the contact is burnt.
3. According to the contactor for high current, provided by the utility model, one side of the first conductive component can be connected with at least one first conductive component in series, so that a plurality of break points can be increased, and the breaking performance of the contactor is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a contactor for high current according to the present utility model;
fig. 2 is a perspective view of a first conductive assembly and a second conductive assembly;
FIG. 3 is a perspective view of a second conductive assembly;
fig. 4 is an exploded schematic view of the structure of the second terminal plate, contacts and arc plates.
Reference numerals illustrate: 1. a first conductive component; 11. a first contact bridge; 12. a first wiring board; 2. a second conductive component; 21. a second contact bridge; 22. a second wiring board; 3. soft connection; 5. a connecting piece; 6. a contact; 7. arc extinguishing plates; 71. a mounting part; 72. a flat plate portion; 73. a jack; 74. an opening; 81. a movable contact; 82. a stationary contact; 9. and a bolt assembly.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Examples
The present embodiment provides a contactor for large current, as shown in fig. 1, including a first conductive member 1 and a second conductive member 2.
The first conductive component 1, as shown in fig. 1 and 2, comprises a first contact bridge 11 and first contact components respectively arranged at two ends of the first contact bridge 11, wherein the first conductive component 1 comprises first wiring boards 12 respectively arranged at two sides of the first contact bridge, the first contact components comprise a movable contact 81 and a fixed contact 82, and the movable contact 81 is arranged at the bottom of the first contact bridge 11.
The second conductive component 2 is arranged in parallel with the first conductive component 1, as shown in fig. 1-3, the second conductive component 2 comprises a second contact bridge 21, one end of the second contact bridge 21 is provided with a second contact component, the other end of the second contact bridge is connected with a wiring terminal through a flexible connection 3, the first contact component of the first conductive component 1 is connected with the second contact component of the second conductive component 2 before the first contact component is disconnected, then the second contact component is disconnected, the first contact bridge 11 and the second contact bridge 21 are driven by an iron core to synchronously move, the connected stroke of the first contact component is smaller than the connected stroke of the second contact component, two ends of the flexible connection 3 can be fixedly connected with corresponding components through a bolt connection, one side of the first conductive component 1 can be connected with at least one first conductive component 1 in series, the second contact component comprises a movable contact 81 and a fixed contact 82, the movable contact 81 is arranged at the bottom of the second contact bridge 21, the second conductive component 2 comprises a second wiring board 22 arranged on two sides of the second conductive component, and the first wiring board 12 and the second wiring board 22 is connected with the first wiring board 5 through a connecting piece. It should be noted that, the contact resistance between the first contact assembly and the second contact assembly is affected by the magnitude of the contact pressure, the larger the pressure between the two contacts is, the smaller the contact resistance is, but the contact pressure is too large, which causes the friction between the two contacts to increase, thereby causing damage to the contacts, so that the suitable contact pressure between the two contacts needs to be maintained, and the contact resistance between the two contacts under the suitable contact pressure is larger than the contact resistance between the contact bridge and the flexible connection, thus the temperature rise is higher.
The first conductive component 1 and the second conductive component 2, as shown in fig. 2-4, further comprise a contact 6 and an arc-extinguishing plate 7 which are arranged on the first wiring board 12 and the second wiring board 22, the arc-extinguishing plate 7 is arranged on the contact 6, the stationary contact 82 is arranged on the contact 6, the contact 6 is arranged in a C-shaped manner, the arc-extinguishing plate 7 is provided with a C-shaped mounting portion 71, a vertical flat plate portion 72 which is arranged on one side of the mounting portion 71 far away from the first contact bridge 11, the flat plate portion 72 and the bottom plate of the mounting portion 71 are integrally formed, an insertion hole 73 for inserting the front end of a top plate of the mounting portion 71 and one end of the contact 6 is arranged on the flat plate portion 72, an opening 74 for horizontally inserting the contact 6 is formed on one end of the mounting portion 71 far away from the flat plate portion 72, and the first wiring board 12 and the second wiring board 22 are fixedly connected with the contact 6 and the arc-extinguishing plate 7 through a bolt assembly 9.
As an alternative embodiment, the first contact assembly is switched on and off simultaneously with the second contact assembly.
As an alternative embodiment, the two ends of the flexible connection 3 can be fixedly connected to the corresponding components by welding.
As an alternative embodiment, the two ends of the flexible connection 3 can be fixedly connected to the corresponding components by riveting.
The utility model provides a contactor for high current, which comprises a first conductive component 1 and at least one second conductive component 2, wherein the first conductive component 1 comprises a first contact bridge 11 and first contact components which are respectively arranged at two ends of the first contact bridge 11; at least one second conductive component 2 is parallelly connected with first conductive component 1 and sets up, second conductive component 2 includes second contact bridge 21, the one end of second contact bridge 21 is equipped with the second contact component, the other end passes through flexible coupling 3 and links to each other with the wiring end, compare with the mode that contacts through two contacts in the prior art, contact between flexible coupling 3 and the second contact bridge 21 is inseparabler, make contact resistance less, the temperature that produces when can greatly reduced electric current passes through like this, the temperature rise has been reduced, thereby the current-carrying capacity of second conductive component 2 has been improved greatly.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A contactor for high currents, comprising:
the first conductive component (1) comprises a first contact bridge (11) and first contact components which are respectively arranged at two ends of the first contact bridge (11);
and the at least one second conductive component (2) is arranged in parallel with the first conductive component (1), the second conductive component (2) comprises a second contact bridge (21), one end of the second contact bridge (21) is provided with a second contact component, and the other end of the second contact bridge is connected with the wiring terminal through a flexible connection (3).
2. Contactor for high currents according to claim 1, characterized in that the first contact assembly of the first conductive assembly (1) is turned on before the second contact assembly of the second conductive assembly (2) and then the second contact assembly is turned off.
3. Contactor for high currents according to claim 2, characterized in that the first contact bridge (11) and the second contact bridge (21) move synchronously and the stroke of the first contact assembly on is smaller than the stroke of the second contact assembly on.
4. The contactor for high currents according to claim 1, wherein the first contact assembly is simultaneously connected and disconnected with the second contact assembly.
5. Contactor for high currents according to claim 4, characterized in that the two ends of the flexible connection (3) can be fixedly connected with the corresponding parts by bolting or welding or riveting.
6. Contactor for high currents according to claim 5, characterized in that one side of the first conductive component (1) is connectable in series with at least one first conductive component (1).
7. The contactor for high currents according to claim 1, characterized in that the first conductive assembly (1) comprises first wiring boards (12) separated on both sides thereof, the second conductive assembly (2) comprises second wiring boards (22) separated on both sides thereof, the first wiring boards (12) and the second wiring boards (22) located on the same side are connected by T-shaped connectors (5).
8. The contactor for high currents according to claim 7, wherein the first and second conductive assemblies (1, 2) each comprise a contact (6) and an arc plate (7) provided on the first and second terminal plates (12, 22), the arc plates (7) being mounted on the contact (6), the first and second contact assemblies each comprise a movable contact (81) and a stationary contact (82), the stationary contact (82) being provided on the contact (6), the movable contact (81) being provided at the bottom of the first and second contact bridges (11, 21).
9. The contactor for high currents according to claim 8, wherein the contact (6) is arranged in a C-shape, the arc extinguishing plate (7) is provided with a C-shaped mounting portion (71), and a vertical flat plate portion (72) arranged on one side of the mounting portion (71) away from the first contact bridge (11), the flat plate portion (72) and the bottom plate of the mounting portion (71) are integrally formed, the flat plate portion (72) is provided with an insertion hole (73) for inserting the front end of the top plate of the mounting portion (71) and one end of the contact (6), and an opening (74) for horizontally inserting the contact (6) is formed on one end of the mounting portion (71) away from the flat plate portion (72).
10. The contactor for high currents according to claim 9, characterized in that the first and second terminal plates (12, 22) are each fixedly connected to the contact (6) and the arc plates (7) by means of a bolt assembly (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321375820.XU CN219658627U (en) | 2023-05-31 | 2023-05-31 | Contactor for high current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321375820.XU CN219658627U (en) | 2023-05-31 | 2023-05-31 | Contactor for high current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658627U true CN219658627U (en) | 2023-09-08 |
Family
ID=87875745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321375820.XU Active CN219658627U (en) | 2023-05-31 | 2023-05-31 | Contactor for high current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658627U (en) |
-
2023
- 2023-05-31 CN CN202321375820.XU patent/CN219658627U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |