Mute energy-saving contactor

Abstract

The utility model discloses a mute energy-saving contactor, and belongs to the technical field of contactors. The contactor solves the problems that in the prior art, contact collision exists between a movable contact and a static contact on the contactor, generated vibration and sound are large, an electromagnetic coil on the contactor needs to be powered on all the time, and electricity consumption is large. The device mainly comprises a shell and a motor, a main contact assembly is installed in the shell, the main contact assembly comprises two side main static contacts fixedly installed in the shell, the main contact assembly further comprises two side active contacts arranged on the lower sides of the two side main static contacts respectively, the two side active contacts are installed on lifting seats respectively, and the lifting seats are installed on the lifting seats respectively. A driving structure is arranged between the motor and the lifting seat, and the motor drives the lifting seat to lift up and down through the driving structure.

Description

Technical Field

[0001] This utility model belongs to the field of contactor technology, and more specifically, it relates to a silent and energy-saving contactor. Background Technology

[0002] In existing technologies, contactors work by generating a magnetic field through an energized electromagnetic coil, which in turn causes an electromagnetic attraction in the contactor core, thus actuating the moving contacts. Specifically, when the coil of a DC contactor is energized, the current generates a magnetic field, which in turn causes an electromagnetic attraction in the contactor core, actuating the moving contacts; normally open contacts close, or normally closed contacts open. When the coil is de-energized, the electromagnetic attraction disappears, the moving contacts return to their original position, the normally open contacts open, and the normally closed contacts close. During operation, the moving and stationary contacts collide, generating significant vibration and noise, which can be unpleasant for users. Furthermore, the electromagnetic coil must be continuously energized during operation, resulting in substantial power consumption. Summary of the Invention

[0003] The purpose of this invention is to provide a silent and energy-saving contactor to overcome the problems in the prior art where the moving and stationary contacts collide, resulting in significant vibration and noise, and the electromagnetic coil on the contactor needs to be continuously energized, leading to high power consumption.

[0004] This utility model is achieved by the following technical solution: a silent and energy-saving contactor, including a housing and a motor. A main contact assembly is installed inside the housing. The main contact assembly includes two main stationary contacts fixedly installed inside the housing. The main contact assembly also includes two active contacts respectively disposed below the two main stationary contacts. The two active contacts are respectively mounted on a lifting seat. A drive structure is provided between the motor and the lifting seat. The motor drives the lifting seat to move up and down through the drive structure.

[0005] Furthermore, an auxiliary contact assembly is also installed inside the housing. The auxiliary contact assembly includes two auxiliary stationary contacts fixedly installed inside the housing. The auxiliary contact assembly also includes two auxiliary moving contacts respectively disposed below the two auxiliary stationary contacts. The two auxiliary moving contacts are also respectively installed on the lifting base.

[0006] Furthermore, the main stationary contacts on both sides are respectively connected to the main terminals on both sides, and the auxiliary stationary contacts on both sides are respectively connected to the auxiliary terminals on both sides.

[0007] Furthermore, the drive structure includes a lead screw mounted on the rotating shaft of the motor and a lifting threaded hole opened in the middle of the lifting seat. The lead screw passes through the lifting threaded hole. The drive structure also includes a guide component for preventing the lifting seat from rotating.

[0008] Furthermore, the guide assembly includes a guide rod fixedly installed within the housing, the guide rod passing through the lifting seat.

[0009] Furthermore, the motor is a stepper motor.

[0010] Furthermore, the motor is connected to a speed reducer.

[0011] Furthermore, the motor is installed inside a housing, which includes a partition on the upper side of the motor, and the output shaft of the motor passes through the partition.

[0012] Furthermore, a spring plate is installed inside the housing on the lower side of the lifting seat. The top of the spring plate abuts against the lifting seat, and the bottom of the spring plate is fixedly connected to the housing. The spring plate has a Z-shaped structure, and the housing has two symmetrically arranged spring plates on the lower side of the lifting seat.

[0013] Furthermore, the housing is provided with arc-extinguishing devices on both sides of the main contact assembly; the arc-extinguishing devices are magnetic blowout arc-extinguishing devices.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a motor to drive the active contact and the auxiliary moving contact to lift and lower, thereby avoiding collisions between the moving contact and the stationary contact when they come into contact, and thus avoiding excessive noise when the moving contact and the stationary contact come into contact.

[0016] 2. After the driving active contact and auxiliary moving contact of the lifting seat of this utility model make contact with the main stationary contact and auxiliary stationary contact respectively, the motor can be de-energized, avoiding the situation where the electromagnetic coil of the current contactor needs to be continuously energized, thus saving energy. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the present invention.

[0018] Figure 2 This is a top view of the present invention when the main contact assembly and the auxiliary contact assembly are respectively provided.

[0019] In the diagram: 1. Housing; 2. Motor; 3. Main stationary contact; 4. Active contact; 5. Lifting seat; 6. Main terminal; 7. Auxiliary terminal; 8. Lead screw; 9. Guide rod; 10. Partition plate; 11. Spring plate; 12. Arc extinguishing device; 13. Reducer. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort should fall within the scope of protection of this utility model.

[0021] The silent and energy-saving contactor described in this utility model changes the driving form of the moving contact in the contactor in the prior art, changing it from being driven by an electromagnetic coil to being driven by a motor 2.

[0022] A silent and energy-saving contactor includes a housing 1 and a motor 2. The housing 1 can be made of plastic, metal (such as aluminum alloy, stainless steel), etc., and encapsulates the contactor to ensure its safe and reliable operation.

[0023] The housing 1 houses a main contact assembly, which includes two main stationary contacts 3 fixedly installed within the housing 1. The main contact assembly also includes two active contacts 4 respectively disposed below the two main stationary contacts 3. In addition to the main contact assembly, this invention also includes an auxiliary contact assembly. The auxiliary contact assembly includes two auxiliary stationary contacts fixedly installed within the housing 1. The auxiliary contact assembly also includes two auxiliary moving contacts respectively disposed below the two auxiliary stationary contacts.

[0024] The main contact assembly of this invention is used to connect or disconnect a main circuit with a large current, while the auxiliary contact assembly is used to connect or disconnect a control circuit with a small current. The main stationary contacts 3 on both sides are respectively connected to the main terminals 6 on both sides, and the auxiliary stationary contacts on both sides are respectively connected to the auxiliary terminals 7 on both sides.

[0025] Both active contacts 4 and both auxiliary moving contacts are mounted on the lifting base 5 and move up and down with the lifting plate. When the lifting plate rises, the active contacts 4 on both sides will contact the main stationary contacts 3 on both sides. At the same time, the auxiliary moving contacts on both sides will contact the auxiliary stationary contacts on both sides, thus simultaneously connecting the main contact assembly and the auxiliary contact assembly. When the lifting plate descends, the active contacts 4 on both sides will separate from the main stationary contacts 3 on both sides. At the same time, the auxiliary moving contacts on both sides will separate from the auxiliary stationary contacts on both sides, thus simultaneously disconnecting the main contact assembly and the auxiliary contact assembly.

[0026] A drive structure is provided between the motor 2 and the lifting seat 5, and the motor 2 drives the lifting seat 5 to move up and down through the drive structure. The drive structure includes a lead screw 8 mounted on the rotating shaft of the motor 2 and a lifting threaded hole opened in the middle of the lifting seat 5. The lead screw 8 passes through the lifting threaded hole. The drive structure also includes a guide component to prevent the lifting seat 5 from rotating.

[0027] When the motor 2 of this invention rotates forward, it drives the lifting seat 5 to rise through the lead screw 8. When the motor 2 rotates in reverse, it drives the lifting seat 5 to fall through the lead screw 8. By setting a guide component, this invention can prevent the lifting seat 5 from rotating and allow it to only move up and down relative to the lead screw 8.

[0028] The guiding assembly includes a guide rod 9 fixedly installed inside the housing 1, the guide rod 9 passing through the lifting seat 5. Two guide rods 9 may be provided, with their upper and lower ends fixedly connected to the housing 1 respectively. When a partition 10 is installed inside the housing 1, the lower end of the guide rod 9 is fixedly connected to the partition 10.

[0029] The motor 2 is a stepper motor 2, which is connected to the reducer 13 and is self-locking.

[0030] The motor 2 is installed inside the housing 1, which includes a partition 10 on the upper side of the motor 2, and the output shaft of the motor 2 passes through the partition 10.

[0031] A spring plate 11 is installed inside the housing 1 on the lower side of the lifting seat 5. The top of the spring plate 11 abuts against the lifting seat 5, and the bottom of the spring plate 11 is fixedly connected to the housing 1. The spring plate 11 has a Z-shaped structure, and the housing 1 has two symmetrically arranged spring plates 11 on the lower side of the lifting seat 5. When the spring plate 11 has a Z-shaped structure, the spring plate 11 includes upper and lower horizontal sections and a middle section. The middle section is arc-shapedly connected to the upper and lower horizontal sections respectively. The upper horizontal section abuts against the bottom of the lifting seat 5, and the lower horizontal section is fixedly connected to the housing 1. In this invention, the bottom of the lifting seat 5 always abuts against the spring plate 11 and is always in a state of downward pressure on the spring plate 11. Figure 1 As shown, when the spring plate 11 is in a Z-shaped structure, the lifting seat 5 presses the spring plate 11 downward through the upper horizontal section, so that the spring plates 11 on both sides will always give the lifting seat 5 an upward elastic force. This upward elastic force will ensure that the active contact 4 and the auxiliary moving contact on the lifting seat 5 are in close contact with the main stationary contact 3 and the auxiliary stationary contact, respectively.

[0032] Arc-extinguishing devices 12 are respectively provided on both sides of the main contact assembly inside the housing 1; the arc-extinguishing devices 12 are magnetic blowout arc-extinguishing devices. When breaking a high-current circuit, an electric arc will be generated between the active contact 4 and the main stationary contact 3, which may burn the contacts and prolong the circuit breaking time. Therefore, the arc-extinguishing devices 12 are respectively provided on both sides of the main contact assembly inside the housing 1 of this invention. Both the arc-extinguishing devices 12 and the magnetic blowout arc-extinguishing devices are existing technologies, which can effectively reduce the generation of electric arcs, reduce energy loss, and further reduce the impact of electric arc generation on the contact life.

Claims

1. A silent energy saving contactor characterized by, It includes a shell (1) and a motor (2), the main contact assembly is installed in the shell (1), the main contact assembly includes two side main static contacts (3) fixedly installed in the shell (1), the main contact assembly also includes two side main movable contacts (4) respectively arranged at the lower side of the two side main static contacts (3), the two side main movable contacts (4) are respectively installed on the lifting seat (5), the driving structure is arranged between the motor (2) and the lifting seat (5), and the motor (2) drives the lifting seat (5) to lift up and down through the driving structure.

2. The silent energy-efficient contactor of claim 1, wherein, The auxiliary contact assembly is also installed in the shell (1), the auxiliary contact assembly includes two side auxiliary static contacts fixedly installed in the shell (1), and the auxiliary contact assembly also includes two side auxiliary movable contacts respectively arranged at the lower side of the two side auxiliary static contacts, and the two side auxiliary movable contacts are also respectively installed on the lifting seat (5).

3. The silent-saving contactor of claim 2, wherein, The two side main static contacts (3) are connected with two side main terminal posts (6) respectively, and the two side auxiliary static contacts are connected with two side auxiliary terminal posts (7) respectively.

4. The silent-saving contactor of claim 1, wherein, The driving structure includes a lead screw (8) installed on the rotating shaft of the motor (2) and a lifting threaded hole opened in the middle of the lifting seat (5), the lead screw (8) passes through the lifting threaded hole, and the driving structure also includes a guide assembly for preventing the lifting seat (5) from rotating.

5. The silent-saving contactor of claim 4, wherein, The guide assembly includes a guide rod (9) fixedly installed in the shell (1), and the guide rod (9) passes through the lifting seat (5).

6. The silent energy-efficient contactor of claim 1, wherein, The motor (2) is a stepping motor (2).

7. The silent energy-efficient contactor of claim 1, wherein, The motor (2) is connected with a speed reducer (13).

8. The silent energy-efficient contactor of claim 1, wherein, The motor (2) is installed in the shell (1), the shell (1) includes a partition plate (10), and the partition plate (10) is on the upper side of the motor (2), and the output shaft of the motor (2) passes through the partition plate (10).

9. The silent energy-efficient contactor of claim 1, wherein, The spring sheet (11) is installed at the lower side of the lifting seat (5) in the shell (1), the top of the spring sheet (11) abuts against the lifting seat (5), and the bottom of the spring sheet (11) is fixedly connected with the shell (1); the spring sheet (11) is in Z-shaped structure, and the shell (1) is symmetrically provided with two spring sheets (11) at the lower side of the lifting seat (5).

10. The silent energy-efficient contactor of claim 1, wherein, The arc extinguishing device (12) is arranged at the two sides of the main contact assembly in the shell (1); the arc extinguishing device (12) is a magnetic blowout arc extinguishing device.

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