A contactor

Abstract

The utility model provides a contactor, including insulating shell, contact support subassembly, static iron core, moving iron core, coil, circuit board, static contact, moving contact and auxiliary contact, the insulating shell is divided into upper shell and lower shell, is provided with incoming line work power pole and outgoing line work power pole on the lower shell, the static contact is installed in the lower shell, the contact support subassembly is collectively received in the upper shell and the lower shell, the circuit board is installed in the upper shell, the circuit board is connected with incoming line control power supply electricity, static iron core, moving iron core and coil all are installed on contact support subassembly, the moving iron core is inserted in static iron core and can move up and down relative to static iron core and make moving contact and static contact contact or separate, the coil is wound on the coil casing and is connected with circuit board electricity, the static contact is connected with incoming line work power pole and outgoing line work power pole electricity, moving contact is installed on contact support subassembly, and auxiliary contact can detachable installation is installed on the outside of upper shell.

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, and in particular to a contactor. Background Technology

[0002] A contactor is an electrical device that uses the magnetic field generated by current flowing through a coil to close contacts, thereby controlling a load. Existing contactors generally consist of an auxiliary circuit and a main circuit arranged vertically. The moving contacts of the main and auxiliary circuits share a single contact support. This means that even if only the auxiliary circuit fails, the entire contactor housing must be removed for repair or replacement, causing significant inconvenience. Furthermore, for users, only the contactor with the faulty auxiliary circuit can be replaced, increasing replacement costs.

[0003] Therefore, it is necessary to provide a new type of AC contactor to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to provide a contactor in which the auxiliary contact is designed separately from the contact inside the internal insulating shell. When the auxiliary contact is damaged or the components inside the contactor's insulating shell are damaged, only the damaged part can be removed for replacement and repair. This makes disassembly and assembly convenient and saves costs.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: A contactor includes an insulating shell, a contact support assembly, a stationary iron core, a moving iron core, a coil, a circuit board, stationary contacts, moving contacts, and auxiliary contacts; the insulating shell is divided into an upper shell and a lower shell.

[0006] The lower housing is provided with an inlet power supply post and an outlet power supply post, and the stationary contact is installed inside the lower housing.

[0007] The contact support assembly is housed within the upper and lower housings. The circuit board is installed inside the upper housing and is electrically connected to the incoming control power supply. The stationary iron core, moving iron core, and coil are all mounted on the contact support assembly.

[0008] The moving iron core is movably inserted into the stationary iron core and can move up and down relative to the stationary iron core to allow the moving contact to contact or separate from the stationary contact.

[0009] The coil is wound around the coil housing and electrically connected to the circuit board. The stationary contact is electrically connected to the incoming power supply post and the outgoing power supply post. The moving contact is mounted on the contact support assembly. The auxiliary contact is detachably mounted on the outside of the upper housing.

[0010] Preferably, the contact support assembly includes a support body, a moving iron core cover, and a first elastic member. The support body is provided with a mounting part, and the mounting part has a mounting groove. The moving iron core cover is fastened together with the support body. A fixing member is provided in the mounting groove. The moving contact is mounted on the fixing member. The first elastic member is detachably connected between the top of the mounting groove and the moving contact.

[0011] Preferably, the contact support assembly further includes a coil housing, which is sleeved on the stationary iron core, and the coil is wound around the coil housing.

[0012] Preferably, the edge of the moving iron core cover has multiple mounting protrusions extending downwards, and a second elastic element is fitted on the mounting protrusion. One end of the second elastic element extends towards the moving contact and connects with the positioning protrusion on the upper shell.

[0013] Preferably, the lower housing has an arc-extinguishing grid in the area through which the moving contact passes, and the moving contact has an arc-inducing angle that extends upward.

[0014] Preferably, the lower shell has an arc-extinguishing chamber inside, and the arc-extinguishing grid is installed inside the arc-extinguishing chamber.

[0015] Preferably, the bottom surface at both ends of the moving contact is provided with a moving contact point, and the top surface of the stationary contact is provided with a stationary contact point.

[0016] Preferably, the incoming power supply column and the outgoing power supply column are spaced apart and located at both ends of the lower housing.

[0017] Preferably, the upper shell is provided with two openings for observation.

[0018] Preferably, the upper shell is provided with a communication interface.

[0019] Compared with existing technologies, the advantages are as follows: the auxiliary contact is designed separately from the contact inside the internal insulating shell. The auxiliary contact can be detachably installed on the insulating shell. When the auxiliary contact is damaged or the components inside the contactor's insulating shell are damaged, only the damaged part can be removed for replacement and repair. This makes disassembly and assembly convenient and saves costs.

[0020] Other features and advantages of this invention will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of this invention may be realized and obtained by means of the elements and combinations specifically pointed out in the appended claims. These and other features of this invention will become more apparent from the following description and the appended claims, or may be learned by practice of the embodiments described herein. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the contactor of this utility model.

[0023] Figure 2 for Figure 1 The contactor shown is a cross-sectional view.

[0024] Figure 3 for Figure 2 The diagram shows a partial structural schematic of the contactor.

[0025] Figure 4 for Figure 3 The diagram shows the assembly of the contact support component and the moving contact.

[0026] Figure 5 for Figure 1 The diagram shows the structure of the auxiliary contact of the contactor.

[0027] Figure 6 Another perspective view of the contactor provided by this utility model.

[0028] Figure 7 This is a perspective view of the contactor provided by this utility model from a top view.

[0029] Reference numerals: 1. Insulating shell; 11. Incoming power supply post; 12. Outgoing power supply post; 13. Opening / closing observation port; 14. Communication interface; 15. Arc extinguishing grid; 16. Arc extinguishing chamber; 2. Contact support assembly; 21. Support body; 211. Mounting part; 212. Mounting groove; 213. Fixing element; 22. Moving iron core cover; 221. Mounting protrusion; 23. First elastic element; 24. Coil shell; 25. Second elastic element; 3. Stationary iron core; 4. Moving iron core; 5. Coil; 6. Circuit board; 7. Stationary contact; 71. Stationary contact point; 72. Arc ignition plate; 8. Moving contact; 81. Arc ignition angle; 82. Moving contact point; 9. Auxiliary contact; 100. Upper shell; 101. Stop; 200. Lower shell. Detailed Implementation

[0030] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0031] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0032] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Please see Figures 1 to 7 This utility model provides a contactor, including an insulating shell 1, a contact support assembly 2, a stationary iron core 3, a moving iron core 4, a coil 5, a circuit board 6, stationary contacts 7, moving contacts 8, and auxiliary contacts 9; the insulating shell 1 is divided into an upper shell 100 and a lower shell 200.

[0034] The lower housing 200 is provided with an inlet power supply post 11 and an outlet power supply post 12, and the stationary contact 7 is installed inside the lower housing 200.

[0035] The contact support assembly 2 is housed within the upper shell 100 and the lower shell 200. The circuit board 6 is installed inside the upper shell 100 and is electrically connected to the incoming control power supply. The stationary iron core 3, the moving iron core 4, and the coil 5 are all mounted on the contact support assembly 2.

[0036] The moving iron core 4 is movably inserted into the stationary iron core 3 and can move up and down relative to the stationary iron core 3 to make the moving contact 8 contact or separate from the stationary contact 7.

[0037] The coil 5 is wound around the coil housing 24 and electrically connected to the circuit board 6. The stationary contact 7 is electrically connected to the incoming power supply post 11 and the outgoing power supply post 12. The moving contact 8 is mounted on the contact support assembly 2. The auxiliary contact 9 is detachably mounted on the outside of the upper housing 100. The incoming power supply post 11 is used to connect to an external power source, and the outgoing power supply post 12 is used to connect to electrical equipment (e.g., a motor).

[0038] Specifically, in this embodiment, the auxiliary contact 9 can be detachably installed on one side of the upper shell 100, or two auxiliary contacts 9 can be detachably installed on both sides of the upper shell 100 at the same time.

[0039] Thus, when the incoming control power supply is connected to the circuit board 6, the coil 5 generates a magnetic field when the power supply is supplied to the coil 5 through the circuit board 6. The contact support assembly 2 moves downward so that the moving contact 8 on the contact support assembly 2 contacts the stationary contact 7. At this time, the contactor is in the closed state, and the power supply connected to the incoming working power column 11 and the outgoing working power column 12 are energized, and then power is supplied to the electrical equipment (e.g., the motor).

[0040] When the power supply from the incoming control power supply to the coil 5 through the circuit board 6 is cut off, the contact support assembly 2 moves upward to its original position, causing the moving contact 8 to separate from the stationary contact 7. At this time, the contactor is in the open state, and the circuit between the incoming working power column 11 and the outgoing working power column 12 is disconnected. The auxiliary contact 9 can be used to form a self-locking circuit, an interlocking circuit, and can also be used for signal transmission in the circuit.

[0041] It should be understood that the incoming control power supply connected to circuit board 6 is a low-voltage control power supply, which serves as the power supply for the coil in this scheme; the external power supply connected to the incoming working power supply column 11 and the outgoing working power supply column 12 is the equipment power supply, which has a higher voltage.

[0042] Since the auxiliary contact 9 is detachably connected to the upper housing 100, when the auxiliary contact is damaged or the components inside the contactor's insulating housing are damaged, only the damaged part can be removed for replacement and repair, which is convenient and saves costs.

[0043] In a preferred embodiment, the incoming power supply column 11 and the outgoing power supply column 12 are spaced apart and located at both ends of the lower housing 200.

[0044] In a preferred embodiment, the upper shell 100 is provided with two opening and closing observation ports 13, through which the closed and open states of the contactor can be observed.

[0045] In a preferred embodiment, the upper shell 100 is provided with a communication interface 14, which facilitates connection to intelligent control devices such as control panels and industrial computers, and sends data to the intelligent control devices. It should be noted that in this embodiment, the communication interface 14 can be a USB interface.

[0046] In a preferred embodiment, mounting openings are provided on both sides of the upper housing 100, and a hook 91 is provided on one side of the auxiliary contact 9. The auxiliary contact 9 is detachably mounted on the upper housing 100 by hooking it onto the mounting opening of the upper housing 100. This design facilitates the disassembly and assembly of the auxiliary contact 9. When the auxiliary contact 9 is damaged or the internal components of the upper housing 100 of the contactor are damaged, only the damaged part can be removed and replaced for repair, which is convenient and saves costs.

[0047] In a preferred embodiment, the contact support assembly 2 includes a support body 21, a moving iron core cover 22, and a first elastic member 23. The support body 21 has a mounting portion 211 with a mounting groove 212. The moving iron core cover 22 is fastened to the support body 21. A fixing member 213 is provided within the mounting groove 212, and the moving contact 8 is mounted on the fixing member 213. The first elastic member 23 is detachably connected between the top of the mounting groove 212 and the moving contact 8. It should be noted that the first elastic member 23 is a spring.

[0048] Thus, by pre-installing the moving contact 8 on the fixing member 213, it is not easy for the moving contact 8 to come loose. When the first elastic member 23 is installed between the top of the mounting groove 212 and the moving contact 8, an elastic force (i.e. the force when the spring is stretched) will be applied to the moving contact 8, so that the moving contact 8 will not easily come loose when the contactor is in the closed or open state and makes corresponding actions (the moving contact 8 is in contact with the stationary contact 7, or the moving contact 8 is separated from the stationary contact 7).

[0049] In a preferred embodiment, the contact support assembly 2 further includes a coil housing 24, which is fitted onto the stationary iron core 3, and the coil 5 is wound around the coil housing 24. This design facilitates the installation of the coil 5 on the outer ring of the moving iron core 4.

[0050] In a preferred embodiment, an arc-extinguishing grid 15 is provided in the area through which the moving contact 8 passes within the lower housing 200. An arc-inducing angle 81 is provided on the moving contact 8, which extends upwards. The arc-inducing angle 81 is used to guide the electric arc generated between the moving contact 8 and the stationary contact 7 to the arc-extinguishing grid 15 so as to quickly extinguish the arc and prevent damage to the internal components of the contactor.

[0051] In a preferred embodiment, the lower housing 200 has an arc-extinguishing chamber 16 inside, and the arc-extinguishing grid 15 is installed inside the arc-extinguishing chamber 16. This facilitates directing the arc to the arc-extinguishing grid 15 so that the arc can be quickly and individually extinguished within the arc-extinguishing chamber 16, preventing damage to the internal components of the contactor.

[0052] In a preferred embodiment, the bottom surface of the moving contact 8 at both ends is provided with moving contact points 82, and the top surface of the stationary contact 7 is provided with stationary contact points 71. When the support body 21 moves downward, it causes the moving contact points 82 on the moving contact 8 to contact the stationary contact points 71 on the stationary contact 7. When the support body 21 moves upward, it causes the moving contact points 82 on the moving contact 8 to separate from the stationary contact points 71 on the stationary contact 7.

[0053] In a preferred embodiment, the stationary contact 7 is provided with an arc-inducing plate 72, which extends into the arc-extinguishing chamber 16 for rapidly guiding the electric arc.

[0054] In a preferred embodiment, a plurality of mounting protrusions 221 are formed extending downward from the edge of the moving iron core cover 22. A second elastic member 25 is sleeved on the mounting protrusion 221 along the Y-axis direction. One end of the second elastic member 25 extends toward the moving contact 8 and connects with the positioning protrusion on the upper shell 100.

[0055] It should be noted that in this embodiment, the second elastic element 25 can be a spring, the number of the positioning protrusions is the same as the number of the mounting protrusions 221, and the positioning protrusions and the mounting protrusions 221 are distributed opposite to each other.

[0056] In a preferred embodiment, a stop 101 is provided inside the upper housing 100, and the stop 101 is located directly below the opening / closing observation port 13. When the contactor coil 5 is de-energized and the magnetic field generated by the coil 5 disappears, the contact support assembly 2 moves upward due to the elastic force generated by the compression of the second elastic member 25. At this time, the stop 101 blocks the moving iron core cover 22, which can limit the moving iron core cover 22 and restrict it from moving upward. At this time, the moving contact 82 on the moving contact 8 separates from the stationary contact 71 on the stationary contact 7. Thus, the closed and open states of the contactor can be observed through the opening / closing observation port 13.

[0057] Thus, when the coil 5 is energized and generates a magnetic field, the moving iron core 4 of the contactor causes the contact support assembly 2 to move downward, causing the second elastic element 25 to be compressed between the mounting protrusion 221 and the positioning protrusion. The moving contact 82 of the moving contact 8 contacts the stationary contact 71 of the stationary contact 7, which is pre-installed directly below the moving contact 8. At this time, the contactor is in a closed state.

[0058] When the contactor coil 5 is de-energized and the magnetic field generated by the coil 5 disappears, the second elastic element 25 is compressed and the elastic force causes the contact support assembly 2 to move upward, thereby causing the moving contact 82 on the moving contact 8 to separate from the stationary contact 71 of the stationary contact 7. At this time, the circuit of the contactor is in the open state.

[0059] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A contactor, characterized in that, It includes an insulating shell (1), a contact support assembly (2), a stationary iron core (3), a moving iron core (4), a coil (5), a circuit board (6), a stationary contact (7), a moving contact (8), and an auxiliary contact (9); the insulating shell (1) is divided into an upper shell (100) and a lower shell (200), and the stationary contact (7) is installed in the lower shell (200). The lower housing (200) is provided with an incoming power supply post (11) and an outgoing power supply post (12). The contact support assembly (2) is housed together in the upper housing (100) and the lower housing (200). The circuit board (6) is installed in the upper housing (100) and is electrically connected to the incoming control power supply. The stationary iron core (3), the moving iron core (4), and the coil (5) are all installed on the contact support assembly (2). The moving iron core (4) is movably inserted on the stationary iron core (3) and can move up and down relative to the stationary iron core (3) to make the moving contact (8) contact or separate from the stationary contact (7). The coil (5) is wound on the coil housing (24) and electrically connected to the circuit board (6). The stationary contact (7) is electrically connected to the incoming power supply post (11) and the outgoing power supply post (12). The moving contact (8) is mounted on the contact support assembly (2). The auxiliary contact (9) is detachably mounted on the outside of the upper shell (100).

2. The contactor as claimed in claim 1, characterized in that, The contact support assembly (2) includes a support body (21), a moving iron core cover (22), and a first elastic member (23). The support body (21) is provided with a mounting part (211), and the mounting part (211) is provided with a mounting groove (212). The moving iron core cover (22) is fastened together with the support body (21). A fixing member (213) is provided in the mounting groove (212). The moving contact (8) is mounted on the fixing member (213). The first elastic member (23) is detachably connected between the top of the mounting groove (212) and the moving contact (8).

3. The contactor as described in claim 2, characterized in that, The contact support assembly (2) also includes a coil housing (24), which is fitted onto the stationary iron core (3), and the coil (5) is wound around the coil housing (24).

4. The contactor as described in claim 2, characterized in that, Multiple mounting protrusions (221) extend downward from the edge of the moving iron core cover (22). A second elastic element (25) is fitted on the mounting protrusion (221). One end of the second elastic element (25) extends towards the moving contact (8) and connects with the positioning protrusion on the upper shell (100).

5. The contactor as claimed in claim 1, characterized in that, The lower shell (200) has an arc-extinguishing grid plate (15) in the area through which the moving contact (8) passes, and the moving contact (8) has an arc-inducing angle (81) that extends upward.

6. The contactor as claimed in claim 5, characterized in that, The lower shell (200) has an arc-extinguishing chamber (16) inside, and the arc-extinguishing grid plate (15) is installed inside the arc-extinguishing chamber (16).

7. The contactor as claimed in claim 1, characterized in that, The bottom surface of the moving contact (8) at both ends is provided with a moving contact (82), and the top surface of the stationary contact (7) is provided with a stationary contact (71).

8. The contactor as claimed in claim 1, characterized in that, The incoming power supply column (11) and the outgoing power supply column (12) are spaced apart and located at both ends of the lower shell (200).

9. The contactor as claimed in claim 1, characterized in that, The upper shell (100) is provided with two openings (13).

10. The contactor as claimed in claim 1, characterized in that, The upper shell (100) is provided with a communication interface (14).

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