An auxiliary contact

Abstract

This utility model relates to the field of auxiliary contacts for contactors, and more specifically, to an auxiliary contact device for gas on / off switching. This utility model solves the problem that existing contactors and auxiliary contacts cannot be electrically controlled simultaneously, and provides an auxiliary contact that includes an auxiliary contact portion that can fulfill the self-locking and interlocking functions of circuit control, while also including a gas valve core to fulfill the function of gas valve control, making it very convenient to use in scenarios requiring simultaneous gas and electrical control.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary contact technology for contactors, and more specifically, to an auxiliary contact device for gas switching. Background Technology

[0002] Existing auxiliary contacts are mainly installed on contactors using a snap-fit ​​device, and they close when the contactor is activated. They are used to assist in control circuits, such as self-locking, interlocking circuits, time-delayed disconnection, or to provide feedback on the contactor's activation and deactivation status. Existing auxiliary contacts only have electrically controlled normally open, normally closed, and time-delayed disconnection functions. When the circuit needs to control both the control circuit and the air path, the contacts of the auxiliary contacts also need to control another solenoid valve to control the air path's on / off state, requiring additional wiring and components, which is inconvenient to operate and increases costs. Utility Model Content

[0003] This invention solves the problem that existing contactors and auxiliary contacts cannot be electrically controlled simultaneously, and provides an auxiliary contact. The auxiliary contact includes an auxiliary contact portion that can satisfy the self-locking and interlocking functions of circuit control, and also includes a pneumatic valve core to satisfy the function of pneumatic valve control.

[0004] The purpose of this utility model is achieved as follows: an auxiliary contact, the auxiliary contact including a hook, a plurality of auxiliary contacts, an air inlet connector, an air outlet connector, and a valve core, wherein the plurality of auxiliary contacts and the valve core are all installed inside the auxiliary contact, the hook is slidably disposed inside the auxiliary contact, and the air inlet connector and the air outlet connector are respectively disposed at both ends of the auxiliary contact.

[0005] In one embodiment, the hook has an "I" shaped structure, and half of the "T" shaped structure of the "I" shaped hook is located outside the auxiliary contact.

[0006] In one embodiment, the hook is attached to the moving contact of the contactor and slides as the contactor is engaged.

[0007] In one embodiment, the valve core is a one-way valve type pneumatic valve core, and the one-way valve structure of the valve core opens and closes as the hook slides.

[0008] In one embodiment, the air inlet connector is used to connect to a compressed air pipe.

[0009] In one embodiment, there are a total of 4 auxiliary contacts, which are used to connect the circuit of the auxiliary contact and the contactor.

[0010] In one embodiment, the auxiliary contact has two normally open contacts and two normally closed contacts.

[0011] In one embodiment, the intake connector is M10*1.5.

[0012] In one embodiment, the vent connector is M10*1.5.

[0013] The auxiliary contact of this invention solves the shortcomings of traditional auxiliary contacts that can only control electricity and cannot control both pneumatic and electrical components, making it very convenient in situations where both pneumatic and electrical control is required. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the installation position of the hook on the auxiliary contact.

[0015] Figure 2 This is a schematic diagram showing the position of the auxiliary contact on the auxiliary contact head;

[0016] Figure 3 This is a schematic diagram showing the locations of the air inlet and outlet connectors.

[0017] Figure 4 This is a schematic diagram of the valve core structure;

[0018] 1-Hook, 2-Auxiliary contact, 3-Inlet connector, 4-Outlet connector, 5-Valve core. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] Unless otherwise defined, 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] An auxiliary contact includes a hook 1, a plurality of auxiliary contacts 2, an air inlet connector 3, an air outlet connector 4, and a valve core 5. The plurality of auxiliary contacts 2 and the valve core are all installed inside the auxiliary contact. The hook is slidably disposed inside the auxiliary contact. The air inlet connector and the air outlet connector are respectively disposed at both ends of the auxiliary contact.

[0022] The hook has an "I"-shaped structure, with half of the "T"-shaped hook located outside the auxiliary contact. The hook is attached to the moving contact of the contactor and slides as the contactor engages. The valve core is a one-way pneumatic control valve core, and its one-way valve structure opens and closes as the hook slides. The air inlet connector is used to connect to a compressed air pipe. There are four auxiliary contacts in total. Four auxiliary contacts 2 and a valve core 5 that controls the on / off state of compressed air are installed inside the auxiliary contact. The four auxiliary contacts are used to connect the circuit between the auxiliary contact and the contactor. Each auxiliary contact has two normally open contacts and two normally closed contacts. The auxiliary contact is mounted on the contactor. The air inlet and outlet connectors are used to connect to the compressed air pipe. The hook of the auxiliary contact is hooked onto the moving contact of the contactor and extends when the contactor is activated. The one-way valve structure of the air valve core also opens as the hook extends, connecting the compressed air supply. When the contactor is deactivated, the hook of the auxiliary contact returns to its original position, and the one-way valve of the air valve core closes the air path as the hook retracts, disconnecting the compressed air supply. This achieves simultaneous connection and disconnection of compressed air with the opening and closing state of the contactor, saving component costs and simplifying the control circuit. The specifications of the air inlet connector 3 are M10*1.5. The specifications of the air outlet connector are M10*1.5.

[0023] This invention overcomes the problem that existing contactors and auxiliary contacts cannot be electrically controlled simultaneously, and provides a pneumatic valve auxiliary contact device. This device includes an auxiliary contact section that fulfills the self-locking and interlocking functions of circuit control, and also includes a pneumatic valve core to fulfill the function of pneumatic valve control. This makes it very convenient in situations requiring simultaneous pneumatic and electrical control. This auxiliary contact device has a pneumatic valve, enabling simultaneous control of both pneumatic and electrical circuits. Currently, existing auxiliary contacts only have electrically controlled normally open, normally closed, and delayed-off functions, and cannot simultaneously realize the functions of a pneumatic solenoid valve. This auxiliary contact device has two normally open and two normally closed (2NO+2NC) circuit auxiliary contacts, facilitating cooperation with contactors for self-locking, interlocking, and contactor engagement / disengagement status monitoring. The hook between the auxiliary contact and the contactor uses a common auxiliary contact hook structure, compatible with common contactors on the market.

[0024] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0025] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An auxiliary contact, characterized in that, The auxiliary contact includes a hook, several auxiliary contacts, an air inlet connector, an air outlet connector, and a valve core. The several auxiliary contacts and the valve core are all installed inside the auxiliary contact. The hook is slidably disposed inside the auxiliary contact. The air inlet connector and the air outlet connector are respectively disposed at both ends of the auxiliary contact.

2. Auxiliary contact according to claim 1, characterized in that The hook has an "I" shaped structure, and half of the "T" shaped structure of the "I" shaped hook is located outside the auxiliary contact.

3. The auxiliary contact of claim 1, wherein The hook is attached to the moving contact of the contactor and slides as the contactor is engaged.

4. Auxiliary contact according to claim 3, characterized in that There are a total of 4 auxiliary contacts, which are used to connect the circuit of the auxiliary contact and the contactor.

5. The auxiliary contact of claim 1, wherein, The valve core is a one-way valve type pneumatic control valve core, and the one-way valve structure of the valve core opens and closes as the hook slides.

6. The auxiliary contact according to claim 1, characterized in that, The air inlet connector is used to connect to a compressed air pipe.

7. The auxiliary contact according to claim 1, characterized in that the auxiliary contact has two normally open contacts and two normally closed contacts.

8. The auxiliary contact of claim 1, wherein, The specifications of the air intake connector are M10*1.

5.

9. The auxiliary contact of claim 1, wherein, The specifications of the air outlet connector are M10*1.5.

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