Low-power-consumption contactor

Abstract

The utility model discloses a low-power-consumption contactor, and the contactor comprises a housing which is internally provided with an accommodation cavity; the static iron core assembly is arranged in the containing cavity of the shell, the static iron core assembly comprises a coil framework, a static iron core and a coil, the coil comprises a pull-in coil and a maintaining coil, any end of the coil framework is provided with a control panel, and the control panel is located in a gap between the coil assembly and the inner wall of the base when the coil assembly is arranged in the base. The control panel is provided with at least one change-over switch used for switching the pull-in coil and the maintaining coil to obtain electricity, and the corresponding side of the coil framework is provided with a trigger piece in linkage fit with the change-over switch. And the movable iron core assembly is in press fit with the triggering piece during actuation and can be switched between the power-on state of the actuation coil and the power-on state of the maintenance coil. According to the design, an existing contactor can be upgraded, the internal structure does not need to be greatly changed, the high-energy-consumption contactor can be upgraded to the low-energy-consumption contactor in the mode of replacing the static iron core assembly, the contactor can meet new standards and regulations, and the updating cost of the contactor is reduced.

Description

Technical Field

[0001] The utility model specifically relates to a low-power consumption contactor. Background Art

[0002] With the vigorous development of the automation industry, artificial intelligence industry, smart sensors, computer technology, control technology, and electronic technology, the role of control appliances has become increasingly important and their uses have become increasingly widespread. There are many types of control appliances, such as AC contactors and DC contactors, which can be used to frequently connect or disconnect various terminal appliances over long distances. Control of common daily life equipment such as motors, transformers, and lighting. It covers a wide range of fields and plays an important role in agriculture, industry, transportation, life, and production, and in people's lives and the development of social and economic benefits.

[0003] At present, both AC contactors and DC contactors are widely used in various industries. However, they are widely used and consume a lot of electricity in long-term operation. In response to this, in order to provide guarantees for the green development of the national economy, my country will implement the new version (GB21518-2022, AC contactor energy efficiency limit values ​​and energy efficiency grades) from January 1, 2024.

[0004] In order to meet the requirements of the new standard, most of them adopt new structures to reduce their energy efficiency level. For example, Chinese patent CN1107963C discloses a mechanical self-locking AC contactor, which uses mechanical self-locking and electromagnet unlocking to lock the contacts of the AC contactor in a closed state to achieve energy saving. Its disadvantages are complex structure, large product modification range, high modification cost, and failure to automatically disconnect when the power grid suddenly fails, which poses certain safety issues. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a low-power contactor.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A low power consumption contactor, comprising:

[0008] A housing, wherein a receiving cavity is provided in the housing;

[0009] A static iron core assembly, as for the accommodating cavity of the shell, and the static iron core assembly includes a coil frame, a static iron core matched with the coil frame and a coil wound on the coil frame, the coil includes a pull-in coil and a maintenance coil wound together on the coil frame, and any end of the coil frame is provided with a control board electrically connected to the wiring board, and when the coil assembly is placed in the base, the control board is located in the gap between the coil assembly and the inner wall of the base, and the control board is provided with at least one switching switch for switching the power supply of the pull-in coil and the maintenance coil, and the corresponding side of the coil frame is provided with a trigger member that forms a linkage with the switching switch;

[0010] The moving iron core assembly is located above the static iron core assembly and can be movably arranged in the accommodating cavity. It includes a contact support and a moving iron core installed on the contact support. The contact support forms a press fit with the trigger member when attracted and can switch between the energized state of the attracting coil and the maintaining coil.

[0011] The switching switch is a self-resetting switch.

[0012] The trigger member is an operating rod with a bayonet, the action end of the switch is placed in the bayonet, and the operating rod can be driven by the downward pressure of the contact support to realize the action of the action end.

[0013] One side of the coil frame extends outward to form a boss, a guide hole is provided on the boss, and the operating rod is arranged through the guide hole.

[0014] A reset piece is arranged between the operating rod and the coil frame, which enables the operating rod to move toward the contact supporting direction.

[0015] The top end of the operating rod supports a triggering platform extending toward the contact moving path.

[0016] The switching switches are divided into two groups and are arranged on the control board along the contact support moving direction, and two bayonet holes are arranged on the operating rod.

[0017] There are two control boards, which are symmetrically arranged at two ends of the coil frame.

[0018] The two control panels are both provided with a switching switch, and the coil frame is correspondingly provided with a triggering member that cooperates with the coil frame.

[0019] A plug pin is provided on one side of the wiring terminal of the wiring board, and the plug pin is electrically connected to the control board.

[0020] The beneficial effects of the utility model are as follows: the application improves the coil skeleton of the static iron core assembly so that a control board for coil switching control is set on one side thereof, and the force of the contact support when it is attracted is directly used on the trigger member, so that the switching switch can realize the switching of the coil and realize the low-energy consumption design of the contactor. At the same time, the design can upgrade the existing contactor without making major changes to the internal structure. It is entirely possible to upgrade the high-energy consumption contactor to a low-energy consumption contactor by replacing the static iron core assembly, so that it meets the requirements of the new standard and reduces the update cost of the contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a cross-sectional schematic diagram of the static iron core assembly and the moving iron core assembly.

[0023] Figure 3 It is a schematic diagram of the structure in which the static iron core assembly is placed in the base.

[0024] Figure 4 It is a structural schematic diagram of the static iron core assembly.

[0025] Figure 5 A schematic diagram of the structure of the trigger.

[0026] Figure 6 Schematic diagram of the coil skeleton structure. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] After the static iron core assembly and the moving iron core assembly are installed in the internal space of a conventional contactor, there is only a certain amount of space at the front and rear ends of the static iron core assembly. Therefore, the present application utilizes this space to achieve an improvement in energy efficiency without changing the shell.

[0030] On this basis, the present application upgrades the static iron core assembly, specifically the coil frame and the terminal block.

[0031] The present application discloses a low-power contactor, which includes a housing, a static iron core assembly placed in the housing, and a moving iron core assembly matched with the static iron core assembly, wherein the moving iron core assembly does not change, and the lower surface of the contact support of the moving iron core assembly is directly used as the trigger surface.

[0032] A shell, wherein a containing cavity is provided in the shell, and the shell includes a base 1 and an upper cover 2, which cooperate to realize the installation and fixation of the static iron core assembly and the moving iron core assembly, wherein the static iron core assembly is arranged in the base, and there is a certain gap between the front and rear sides of the inner wall of the base and the coil frame, and the gap is just used to place the control board, so as to maximize the use of the internal space, and at the same time, the control board can be adaptively modified according to the structure inside the base so that it avoids the internal structure.

[0033] The static iron core assembly is arranged in the accommodating cavity of the shell, and the static iron core assembly includes a coil frame 9, a static iron core 10 matched with the coil frame, and a coil wound on the coil frame, the coil includes a pull-in coil and a maintenance coil wound together on the coil frame, and a control board 6 electrically connected to the terminal board is provided at either end of the coil frame, and the control board is located in the gap between the coil assembly and the inner wall of the base when the coil assembly is placed in the base, and at least one switching switch for switching the power supply of the pull-in coil and the maintenance coil is provided on the control board, and a trigger member which forms a linkage with the switching switch is provided on the corresponding side of the coil frame.

[0034] The principle of the control panel is referred to the patent publication CN 221201029 U, so the principle of the control panel is not described in detail.

[0035] The trigger member can be driven by the moving iron core assembly. Since the movement trend of the moving iron core assembly is axial movement, the trigger member can have the same movement trend as it, or use a lever to drive the lever downward through the moving iron core assembly, and then it rotates relatively to disconnect the switching switch that cooperates with it.

[0036] And adopt the structure of consistent movement trend, then can adopt the operating rod that is arranged on one side of coil frame.

[0037] The moving iron core assembly is located above the static iron core assembly and can be movably arranged in the accommodating cavity. It includes a contact support 3 and a moving iron core 4 installed on the contact support. The contact support forms a press fit with the trigger member when attracted and can switch between the energized state of the attracting coil and the maintaining coil.

[0038] The switching switch 7 is a self-resetting switch, which can adopt a bridge switch or the simplest two copper plates, and the two copper plates are in a closed state in the initial state, one of the copper plates is longer than the other, and the long copper plate can be driven by a trigger to realize the conversion from closed to open.

[0039] At the same time, the switching switch can also adopt a micro switch, and the self-reset of the operating rod is used to achieve the resetting of the switching switch.

[0040] The trigger member 5 is an operating rod with a bayonet, and the action end of the switching switch is placed in the bayonet 51, and the downward pressure of the contact support can drive the operating rod to realize the action of the action end. The action of the contact support can drive the trigger member to change its stroke, and then use the stroke to realize the state switching of the switching switch.

[0041] The operating rod is not limited to a rod-shaped structure, and may also be a slider with a bayonet, or directly pressed against the movable end of the switch through a movable sliding member, that is, giving the switch a force for switching the state.

[0042] One side of the coil frame extends outward to form a boss 91, and a guide hole is provided on the boss, and the operating rod is arranged through the guide hole. The present application only requires modification of the coil frame, and utilizes the guide hole design of the boss to guide and limit the relative axial movement of the operating rod, so that it can only realize vertical movement, thereby converting the force supported by the contacts into a force for switching the switch.

[0043] In order to avoid the installation of the terminal block, the boss is provided with a gap through which the terminal plate can pass, and the terminal block is installed into the coil frame through the gap.

[0044] A reset member is provided between the operating rod and the coil frame to enable the operating rod to move in the contact support direction. The reset member is a spring and is arranged at the bottom of the operating rod. At the same time, the reset member can also be an elastic member such as a torsion spring. It mainly gives the operating rod a movement tendency always in the contact support direction. When the moving iron core is disconnected, it can reset the operating rod, thereby closing the switching switch.

[0045] The trigger platform 52 extends from the top of the operating rod to the moving path of the contact support. Through the extended trigger platform, it is always fixed on the coil frame, and its part extends to the moving path of the contact support, which can ensure that the action of the contact support acts on the trigger platform and drives it to move downward.

[0046] The switching switches are in two groups, which are arranged on the control panel along the moving direction of the contact support, and two bayonet holes are provided on the operating rod. The number of switching switches can be increased or decreased according to the function. By setting multiple switching switches, switching of other functions can be realized.

[0047] There are two control boards, which are symmetrically arranged at the two ends of the coil frame. By using two control boards and utilizing the space at the two ends, the number of components on a single control board can be reduced, the gap between components can be increased as much as possible, the heat dissipation efficiency can be improved, and its temperature rise can be reduced.

[0048] The two control panels are both provided with a switching switch, and the coil frame is correspondingly provided with a triggering member that cooperates with the coil frame.

[0049] A pin 81 is provided on one side of the terminal of the terminal block 8, and the pin is electrically connected to the control board. The present application uses the terminal block to directly fix the control board, so that the entire static iron core assembly is a complete product. When upgrading the contactor, the energy efficiency level of the contactor can be improved by directly replacing the static iron core.

[0050] At the same time, a socket 92 is provided at the bottom of the coil frame for realizing a quick connection between the coil and the control board.

[0051] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A low power consumption contactor, characterized in that: It includes: A housing, wherein a receiving cavity is provided in the housing; A static iron core assembly, as for the accommodating cavity of the shell, and the static iron core assembly includes a coil frame, a static iron core matched with the coil frame and a coil wound on the coil frame, the coil includes a pull-in coil and a maintenance coil wound together on the coil frame, and any end of the coil frame is provided with a control board electrically connected to the wiring board, and when the coil assembly is placed in the shell, the control board is located in the gap between the coil assembly and the inner wall of the shell, and the control board is provided with at least one switching switch for switching the power supply of the pull-in coil and the maintenance coil, and the corresponding side of the coil frame is provided with a trigger member that forms a linkage with the switching switch; The moving iron core assembly is located above the static iron core assembly and can be movably arranged in the accommodating cavity. It includes a contact support and a moving iron core installed on the contact support. The contact support forms a press fit with the trigger member when attracted and can switch between the energized state of the attracting coil and the maintaining coil.

2. The low power consumption contactor according to claim 1, characterized in that: The switching switch is a self-resetting switch.

3. The low power consumption contactor according to claim 1 or 2, characterized in that: The trigger member is an operating rod with a bayonet, the action end of the switch is placed in the bayonet, and the operating rod can be driven by the downward pressure of the contact support to realize the action of the action end.

4. The low power consumption contactor according to claim 3, characterized in that: One side of the coil frame extends outward to form a boss, a guide hole is provided on the boss, and the operating rod is arranged through the guide hole.

5. The low power consumption contactor according to claim 3, characterized in that: A reset piece is arranged between the operating rod and the coil frame, which enables the operating rod to move toward the contact supporting direction.

6. The low power consumption contactor according to claim 3, characterized in that: The top end of the operating rod supports a triggering platform extending toward the contact moving path.

7. The low power consumption contactor according to claim 3, characterized in that: The switching switches are divided into two groups and are arranged on the control board along the contact support moving direction, and two bayonet holes are arranged on the operating rod.

8. The low power consumption contactor according to claim 1, characterized in that: There are two control boards, which are symmetrically arranged at two ends of the coil frame.

9. The low power consumption contactor according to claim 8, characterized in that: The two control panels are both provided with a switching switch, and the coil frame is correspondingly provided with a triggering member that cooperates with the coil frame.

10. The low power consumption contactor according to claim 1, characterized in that: A plug pin is provided on one side of the wiring terminal of the wiring board, and the plug pin is electrically connected to the control board.

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