Monopole alternating current contactor

Abstract

The utility model discloses a single-pole alternating current contactor, and relates to the technical field of electric appliances. The utility model relates to a high-voltage switch, which comprises a contact structure, a base, a radiator, a wiring terminal and a shell, the contact structure is arranged on the base, and the shell covers the outer side of the contact structure; a plurality of contact structures are arranged, each contact structure is connected with the wiring terminal and is arranged in parallel through the wiring terminal, and the wiring terminal extends to the outside of the shell; and the radiator is arranged on the wiring terminal and is connected with the contact structure through the wiring terminal. According to the utility model, the structure is simple, a plurality of contact structures in the wiring terminal are connected in parallel through the wiring terminal, the current-carrying capability is improved, and the heat radiation effect is enhanced through extending the wiring terminal to the outer side of the shell and arranging the heat radiator on the wiring terminal.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a single-pole AC contactor. Background Technology

[0002] The contactors used in existing AC power grid systems are all three-pole or four-pole contactor products, and they are all one-piece structures with only one control port. For three-pole or four-pole contactors with lower current requirements, their small size makes installation convenient and eliminates heat dissipation issues. However, for three-pole or four-pole contactors with higher current requirements, the product size becomes large, making product layout and installation inconvenient, and replacing and maintaining multi-pole contactors also more difficult. In addition, because the contactor has a one-piece structure, heat dissipation between the internal phases is difficult, which can also affect the stability of the rated current of multi-pole contactors. Utility Model Content

[0003] To address the problems existing in the prior art, a single-pole AC contactor is provided, which connects multiple contact structures in parallel through terminals and installs a heat sink on the terminals to form a high-current single-pole AC contactor and enhance its heat dissipation capacity. Multiple single-pole AC contactors can replace one multi-pole AC contactor. Under the same current conditions, this solves the problems of large size, rigid structure, and poor heat dissipation of high-current multi-pole contactors, which are not conducive to installation and maintenance.

[0004] This utility model provides the following technical solution:

[0005] This utility model proposes a single-pole AC contactor, including a contact structure, a base, a heat sink, a terminal block, and a housing. The contact structure is mounted on the base, and the housing covers the outside of the contact structure. Multiple contact structures are provided, each of which is connected to a terminal block and arranged in parallel through the terminal block. The terminal block extends to the outside of the housing. The heat sink is disposed on the terminal block and is connected to the contact structure through the terminal block.

[0006] Furthermore, the housing is provided with heat dissipation holes.

[0007] Furthermore, the heat dissipation holes are provided in multiple locations.

[0008] Preferably, the heat dissipation holes are located on the top or side of the housing.

[0009] Furthermore, multiple contact structures are arranged side by side, each contact structure including a stationary contact and a moving contact. The stationary contact is mounted on a base and has a stationary contact point. The moving contact is disposed on the base and has a moving contact point corresponding to the stationary contact point. The moving contact can drive the moving contact point to move up and down relative to the base, realizing the contact interruption control of the moving contact and the stationary contact. The contact structure is connected to the terminal block through the stationary contact.

[0010] Furthermore, there are two stationary contacts, located at both ends of the moving contact, and each end of the moving contact is provided with a moving contact corresponding to the stationary contact.

[0011] Furthermore, the wiring terminal includes an inlet terminal and an outlet terminal, which are located at both ends of the contact structure, and the stationary contacts located at both ends of the moving contact in the plurality of contact structures are respectively connected in parallel through the inlet terminal and the outlet terminal.

[0012] Furthermore, the heat sink is provided in two parts, which are respectively installed on the inlet terminal and outlet terminal at both ends of the contact structure.

[0013] Preferably, the terminal block is a short-circuit copper busbar.

[0014] Preferably, the stationary contact and the wiring terminal are integrated into one unit.

[0015] Furthermore, the base is equipped with a control coil, which can control the moving contact to move up and down relative to the base.

[0016] Furthermore, the radiator is selected from one of the following: air-cooled radiator, water-cooled radiator, and evaporative cooling radiator.

[0017] This utility model has the following beneficial technical effects:

[0018] This invention features a simple structure. Multiple contact structures within a single-pole AC contactor are connected in parallel to form a single pole via terminals, increasing its current-carrying capacity. The terminals extend to the outside of the housing, and a heat sink is installed on the terminals, allowing heat from the contact structures to be directly conducted to the outside of the housing through the terminals, significantly improving heat dissipation. Multiple single-pole AC contactors can be used simultaneously, replacing a single multi-pole AC contactor. Due to their small size, single-pole AC contactors are flexible and easy to install. Furthermore, the independent operation and airflow between multiple single-pole AC contactors facilitate heat dissipation and subsequent airflow design. Under the same current conditions, this invention solves the problems of excessive size, rigid structure, and poor heat dissipation associated with high-current multi-pole contactors. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 The external structure diagram of the single-pole AC contactor without a heat sink provided by this utility model.

[0021] Figure 2 The overall structural diagram of the single-pole AC contactor provided by this utility model.

[0022] Figure 3 A side view of the overall structure of the single-pole AC contactor provided by this utility model.

[0023] Figure 4 The side view of the shell-free structure of the single-pole AC contactor provided by this utility model.

[0024] Figure 5 The diagram shows the shell-free structure of the single-pole AC contactor provided by this utility model.

[0025] Figure 6 A schematic diagram of the heat dissipation hole structure provided by this utility model.

[0026] Explanation of the markings in the image:

[0027] 1-Base; 2-Housing; 3-Terminal; 4-Moving contact; 5-Stationary contact; 6-Radiator; 7-Heat dissipation hole. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Please see Figure 1-5 The single-pole AC contactor shown includes a contact structure, a base 1, a heat sink 6, a terminal block 3, and a housing 2. The contact structure is mounted on the base 1, and the housing 2 covers the outside of the contact structure. There are multiple contact structures, each of which is connected to the terminal block 3 and connected in parallel to form a pole through the terminal block 3, thereby improving the current carrying capacity of the single-pole AC contactor. The terminal block 3 extends to the outside of the housing. The heat sink 6 is disposed on the terminal block 3 and is connected to the contact structure through the terminal block 3, transferring the heat of the contact structure to the heat sink 6 through the terminal block, thereby improving the overall heat dissipation capacity.

[0033] Specifically, in this embodiment, there are three contact structures arranged side by side. Each contact structure includes a stationary contact 5 and a moving contact 4. The stationary contact 5 is mounted on the base 1 and has a stationary contact point. The moving contact 4 is located on the base 1, above the stationary contact 5, and has a moving contact point corresponding to the stationary contact point. The moving contact 4 can drive the moving contact point to move up and down relative to the base, thereby realizing the contact interruption control between the moving contact point and the stationary contact point. The contact structure is connected to the terminal block 3 through the stationary contact 5.

[0034] Specifically, there are two stationary contacts 5, located at both ends of the moving contact 4. Both ends of the moving contact 4 are provided with moving contacts corresponding to the stationary contacts.

[0035] Specifically, the terminal block 3 includes an inlet terminal and an outlet terminal, which are located at both ends of the contact structure. In the three contact structures, the three stationary contacts 5 located at one end of the moving contact 4 are connected in parallel through the inlet terminal, and the three stationary contacts 5 at the other end are connected in parallel through the outlet terminal.

[0036] Specifically, there are two radiators 6, which are respectively installed on the inlet and outlet terminals at both ends of the contact structure.

[0037] Specifically, in this embodiment, terminal 3 is a short-circuit copper busbar.

[0038] Specifically, in this embodiment, the stationary contact 5 and the terminal block 3 are integrated into one unit.

[0039] Specifically, a control coil is provided inside the base 1, which can control the moving contact 4 to move up and down relative to the base 1.

[0040] Specifically, in this embodiment, the heat sink 6 is an air-cooled heat sink 6.

[0041] For details, please refer to further information. Figure 6 In this embodiment, the housing is further provided with multiple heat dissipation holes 7, which are located on the side of the housing. The heat dissipation holes 7 allow the heat inside the single-pole AC contactor to be quickly dissipated through air convection, thereby enhancing the heat dissipation effect.

[0042] Specifically, in this embodiment, when using the single-pole AC contactor, three single-pole AC contactors can replace one high-current three-pole AC contactor, or four single-pole AC contactors can replace one high-current four-pole AC contactor. Under the same current conditions, the single-pole AC contactor is smaller in size and more flexible in installation. Since each single-pole AC contactor is set independently, there is air circulation between each single-pole AC contactor, which is beneficial for the heat dissipation of the contactor and the design of the subsequent air duct.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A single pole AC contactor characterized by, The application relates to a contact structure, a base, a radiator, a wiring terminal and a shell, the contact structure is installed on the base, the shell is arranged on the outer side of the contact structure; the contact structure is provided with a plurality of contact structures, each of the contact structures is connected with the wiring terminal and is arranged in parallel through the wiring terminal, the wiring terminal extends to the outside of the shell; the radiator is arranged on the wiring terminal and is connected with the contact structure through the wiring terminal.

2. The single pole AC contactor of claim 1, wherein, The shell is provided with a plurality of heat dissipation holes.

3. The single pole AC contactor of claim 2, wherein, The heat dissipation holes are arranged on the top or side of the shell.

4. The single pole AC contactor of claim 1, wherein, The plurality of contact structures are arranged side by side, each of the contact structures comprises a static contact and a dynamic contact, the static contact is installed on the base, the static contact is provided with a static contact point; the dynamic contact is arranged on the base, the dynamic contact is provided with a dynamic contact point corresponding to the static contact point, the dynamic contact can drive the dynamic contact to move up and down relative to the base, so that the dynamic contact point and the static contact point are disconnected; the contact structure is connected with the wiring terminal through the static contact.

5. The single-pole AC contactor of claim 4, wherein the AC coil is connected to the AC line through the first and second AC terminals. The static contact is provided with two static contacts, which are respectively arranged at the two ends of the dynamic contact, and the two ends of the dynamic contact are respectively provided with the dynamic contact points corresponding to the static contact points.

6. The single-pole AC contactor of claim 5, wherein, The wiring terminal comprises an incoming terminal and an outgoing terminal, the incoming terminal and the outgoing terminal are respectively arranged at the two ends of the contact structure, and the static contacts at the two ends of the dynamic contact in the plurality of contact structures are respectively arranged in parallel through the incoming terminal and the outgoing terminal.

7. The single-pole AC contactor of claim 6, wherein the AC coil is connected to the AC line through a capacitor. The radiator is provided with two radiators, which are respectively arranged on the incoming terminal and the outgoing terminal at the two ends of the contact structure.

8. The single-pole AC contactor of claim 4, wherein, The static contact and the wiring terminal are integrally arranged.

9. The single-pole AC contactor of claim 4, wherein, The base is provided with a control coil, and the control coil can control the dynamic contact to move up and down relative to the base.

10. A single pole AC contactor according to any one of claims 1 to 9, wherein The radiator is selected from one of a wind-cooled radiator, a water-cooled radiator and an evaporative cooling radiator.

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