Contactor movable contact assembly and contactor

Abstract

This invention discloses a contactor movable contact assembly and a contactor. [Solution] The contactor movable contact assembly comprises an insulating seat (1), a drive shaft (2) located below the insulating seat (1) and fixed to the insulating seat (1), a limiting bracket (3) located above the insulating seat (1) and fixed to the insulating seat (1), a movable contact (4) movably mounted on the limiting bracket (3) and movable perpendicular (Z) to the limiting bracket (3), and a spring (5) mounted on the limiting bracket (3) and compressed axially between the movable contact (4) and the insulating seat (1). The insulating seat (1) has an auxiliary contact pressing portion (18), which is used to drive the auxiliary contact of the contactor to switch from an open state to a closed state or from a closed state to an open state.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of Chinese Patent Application No. CN202411376044.4, filed with the China National Intellectual Property Administration on September 29, 2024, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a contactor movable contact assembly and a contactor including the contactor movable contact assembly.

Background Art

[0003] In the prior art, a contactor typically includes a housing, a pair of stationary contacts, a movable contact assembly, an electromagnetic drive assembly, an auxiliary contact, and an auxiliary contact pressing member. An arc extinguishing chamber is formed in the housing. The pair of stationary contacts are fixed to the housing. The movable contact assembly is movably installed in the arc extinguishing chamber of the housing. The electromagnetic drive assembly is attached to the housing to drive the movable contact assembly to move. The auxiliary contact is attached to the arc extinguishing chamber of the housing, and the auxiliary contact pressing member is attached to the movable contact assembly so as to move together with the movable contact assembly. Existing contactors require a separate auxiliary contact pressing member that needs to be attached to the movable contact assembly, resulting in a complex structure and high cost of the contactor.

[0004] In the prior art, a movable contact assembly typically includes an insulating seat, a drive shaft, a limiting bracket, a movable contact, and a spring. The drive shaft and limiting bracket are fixed to the insulating seat, and the movable contact is movable within the limiting bracket. The spring applies contact pressure to the movable contact by being compressed between the movable contact and the insulating seat. Positioning protrusions are formed on the bottom surface of the movable contact and the top surface of the insulating seat to position the two ends of the spring. In the prior art, the spring can only be attached to the limiting bracket horizontally through a side opening in the limiting bracket. The spring needs to be overcompressed to avoid radial displacement of the positioning protrusions, which carries a risk of spring damage. Furthermore, because both ends of the spring use the positioning protrusions for positioning, the reliability is poor, and there is a risk of excessive radial displacement of the spring. [Overview of the project] [Problems that the invention aims to solve]

[0005] This invention was made to overcome or mitigate at least one aspect of the aforementioned drawbacks. [Means for solving the problem]

[0006] According to one aspect of the present invention, a contactor movable contact assembly is provided. The contactor movable contact assembly comprises an insulating seat, a drive shaft located below and fixed to the insulating seat, a limiting bracket located above and fixed to the insulating seat, a movable contact movably mounted on the limiting bracket and movable perpendicularly to the limiting bracket, and a spring mounted on the limiting bracket and compressed axially between the movable contact and the insulating seat. The insulating seat has an auxiliary contact pressing portion, which is used to drive the auxiliary contact of the contactor to switch from an open state to a closed state or from a closed state to an open state.

[0007] According to an exemplary embodiment of the present invention, the limiting bracket has an upper opening and a pair of side openings on both sides in a first horizontal direction, the movable contact is fitted to be inserted into the limiting bracket from the side opening of the limiting bracket, and the spring is fitted to be inserted into the limiting bracket from either the upper or side opening of the limiting bracket.

[0008] According to another exemplary embodiment of the present invention, the movable contact comprises a body and a pair of movable contacts formed on the upper surfaces of both ends of the body. The pair of movable contacts are used to make electrical contact with the stationary contacts of a pair of stationary contacts of the contactor.

[0009] According to another exemplary embodiment of the present invention, a circular positioning groove is formed on the bottom surface of the body of the movable contact, and the upper end of the spring is housed and positioned in the positioning groove of the body of the movable contact.

[0010] According to another exemplary embodiment of the present invention, a positioning projection is formed in the insulating seat portion, the positioning projection is inserted into the lower end of the spring to position the lower end of the spring, and the positioning groove and the positioning projection are coaxially arranged spaced apart on both sides in the axial direction of the spring to prevent radial displacement of the spring.

[0011] According to another exemplary embodiment of the present invention, the bottom of the limiting bracket and the upper end of the drive shaft are embedded in an insulating seat, which electrically isolates the drive shaft from the limiting bracket and the spring.

[0012] According to another exemplary embodiment of the present invention, the insulating seat is an injection-molded part at the bottom of the limiting bracket and the upper end of the drive shaft, and the insulating seat, limiting bracket, and drive shaft are integral parts.

[0013] According to another exemplary embodiment of the present invention, the insulating seat comprises a bottom wall and a pair of side walls, the pair of side walls spaced apart on both sides in a second horizontal direction perpendicular to a first horizontal direction, a positioning projection formed on the upper surface of the bottom wall of the insulating seat, and an auxiliary contact pressing portion formed on the outside of one side wall of the insulating seat.

[0014] According to another exemplary embodiment of the present invention, the upper end of the drive shaft is embedded in the bottom wall of the insulating seat, and the bottom of the limiting bracket is embedded in a pair of side walls and bottom walls of the insulating seat.

[0015] According to another exemplary embodiment of the present invention, the limiting bracket comprises a pair of limiting portions arranged spaced apart from each other on both sides in a first horizontal direction, and a pair of fixing portions embedded in the side and bottom walls of a pair of insulating seats. The limiting portions are in an inverted U shape, with one end of the pair of limiting portions connected to the upper side of one fixing portion and the other end connected to the upper side of the other fixing portion.

[0016] According to another exemplary embodiment of the present invention, the upper opening of the limiting bracket is located between a pair of limiting portions, the pair of limiting portions each defining a pair of side openings of the limiting bracket.

[0017] According to another exemplary embodiment of the present invention, the limiting section comprises a pair of vertical arms extending vertically and a horizontal arm connected between the upper ends of the pair of vertical arms. The lower ends of the pair of vertical arms are respectively connected to the upper sides of a pair of fixed sections.

[0018] According to another exemplary embodiment of the present invention, the horizontal arm of the limiting unit is pressed against the upper surface of the body of the movable contact, and a pair of vertical arms of the limiting unit are located on either side of the body of the movable contact, with the two ends of the body of the movable contact extending from the limiting bracket.

[0019] According to another aspect of the present invention, a contactor is provided. The contactor comprises a housing having an arc extinguishing chamber formed therein, a pair of stationary contacts fixed to the housing and having stationary contacts located in the arc extinguishing chamber, and a contactor movable contact assembly movably disposed in the arc extinguishing chamber. The movable contacts are adapted to move from an open position, electrically isolated from the stationary contacts, to a closed position, electrically in contact with the stationary contacts, by driving a drive shaft.

[0020] According to an exemplary embodiment of the present invention, the contactor further comprises an auxiliary contact mounted in the arc extinguishing chamber of the housing, which can be switched between an open state and a closed state. When the movable contact is moved from the open position to the closed position, the auxiliary contact is switched from the open state to the closed state, or from the closed state to the open state, by driving the auxiliary contact pressing part.

[0021] According to another exemplary embodiment of the present invention, the contactor further comprises an electromagnetic drive assembly mounted on the housing for generating an electromagnetic drive force, the drive shaft being adapted to drive a movable contact to move between an open position and a closed position by moving axially as a result of the electromagnetic drive force generated by the electromagnetic drive assembly.

[0022] In the above-described exemplary embodiment of the present invention, since the insulating seat portion is integrated with the auxiliary contact pressing portion, there is no need to provide a separate auxiliary contact pressing member, the structure of the contactor is simplified, and its cost is reduced.

[0023] Furthermore, in the exemplary embodiment described above according to the present invention, since the spring can be inserted into the limiting bracket from the upper opening of the limiting bracket, excessive compression of the spring is avoided and it is ensured that the spring is not damaged during installation.

[0024] Also, in the foregoing exemplary embodiment according to the present invention, since the upper end of the spring is accommodated and positioned in the annular positioning groove on the bottom surface of the movable contact, radial displacement of the spring is prevented.

[0025] The above and other features of the present invention will become more apparent by describing the exemplary embodiments of the present invention in detail with reference to the accompanying drawings.

Brief Description of the Drawings

[0026] [Figure 1] FIG. 1 is a perspective view of an example of a contact movable contact assembly according to an exemplary embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of a contact movable contact assembly according to an exemplary embodiment of the present invention along a first horizontal direction. [Figure 3] FIG. 3 is a cross-sectional view of a contact movable contact assembly according to an exemplary embodiment of the present invention along a second horizontal direction. [Figure 4] FIG. 4 is a planar cross-sectional view of a contact movable contact assembly according to an exemplary embodiment of the present invention. [Figure 5] FIG. 5 is an exemplary assembly view of a contact movable contact assembly according to an exemplary embodiment of the present invention. [Figure 6] FIG. 6 is another exemplary assembly view of a contact movable contact assembly according to an exemplary embodiment of the present invention.

Modes for Carrying Out the Invention

[0027] Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Like reference numerals refer to like elements. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the present disclosure to those skilled in the art.

[0028] The following detailed description includes many specific details to enable a full understanding of the disclosed embodiments for illustrative purposes. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other cases, well-known structures and devices are shown schematically to simplify the drawings.

[0029] According to the general concept of the present invention, a contactor movable contact assembly is provided. The contactor movable contact assembly comprises an insulating seat, a drive shaft located below and fixed to the insulating seat, a limiting bracket located above and fixed to the insulating seat, a movable contact movably mounted on the limiting bracket and movable perpendicularly to the limiting bracket, and a spring mounted on the limiting bracket and compressed axially between the movable contact and the insulating seat. The insulating seat has an auxiliary contact pressing portion, which is used to drive the auxiliary contact of the contactor to switch from an open state to a closed state or from a closed state to an open state.

[0030] According to another general concept of the present invention, a contactor is provided. The contactor comprises a housing in which an arc extinguishing chamber is formed, a pair of stationary contacts fixed to the housing and having stationary contacts located in the arc extinguishing chamber, and a contactor movable contact assembly movably disposed in the arc extinguishing chamber. The movable contacts are adapted to move from an open position, electrically isolated from the stationary contacts, to a closed position, electrically in contact with the stationary contacts, by driving a drive shaft.

[0031] Figure 1 shows an illustrative perspective view of a contactor movable contact assembly according to an exemplary embodiment of the present invention. Figure 2 shows a cross-sectional view of the contactor movable contact assembly according to an exemplary embodiment of the present invention along a first horizontal direction X. Figure 3 shows a cross-sectional view of the contactor movable contact assembly according to an exemplary embodiment of the present invention along a second horizontal direction Y. Figure 4 shows a plan cross-sectional view of the contactor movable contact assembly according to an exemplary embodiment of the present invention. Figure 5 shows an illustrative assembly diagram of the contactor movable contact assembly according to an exemplary embodiment of the present invention. Figure 6 shows another illustrative assembly diagram of the contactor movable contact assembly according to an exemplary embodiment of the present invention.

[0032] As shown in Figures 1 to 6, an exemplary embodiment of the present invention discloses a contactor movable contact assembly. The contactor movable contact assembly includes an insulating seat 1, a drive shaft 2, a limiting bracket 3, a movable contact 4, and a spring 5. The drive shaft 2 is located below the insulating seat 1 and is fixed to the insulating seat 1. The limiting bracket 3 is located above the insulating seat 1 and is fixed to the insulating seat 1. The movable contact 4 is movably mounted on the limiting bracket 3 and is movable in the Z direction perpendicular to the limiting bracket 3. The spring 5 is mounted on the limiting bracket 3 and is compressed axially between the movable contact 4 and the insulating seat 1. The spring 5 is used to apply a predetermined contact pressure to the movable contact 4 to ensure reliable electrical contact between the movable contact 4 and the contacts of the contactor (not shown).

[0033] As shown in Figures 1 to 6, in the illustrated embodiment, the insulating seat portion 1 is integrated with the auxiliary contact pressing portion 18, and the auxiliary contact pressing portion 18 is used to drive the auxiliary contact (not shown) of the contactor to switch from an open state to a closed state, or from a closed state to an open state.

[0034] As shown in Figures 1 to 6, in the illustrated embodiment, the limiting bracket 3 has an upper opening 301 and a pair of side openings 301 on both sides in the first horizontal direction X. The movable contact 4 is fitted to be inserted into the limiting bracket 3 through the side opening 302 of the limiting bracket 3, and the spring 5 is fitted to be inserted into the limiting bracket 3 through either the upper opening 301 or the side opening 302 of the limiting bracket 3.

[0035] As shown in Figures 1 to 6, in the illustrated embodiment, the movable contact 4 includes a body 40 and a pair of movable contacts 4a. The pair of movable contacts 4a are formed on the upper surfaces of both ends of the body 40, respectively. The pair of movable contacts 4a are used to make electrical contact with the stationary contacts (not shown) of a pair of stationary contacts of the contactor.

[0036] As shown in Figures 1 to 6, in the illustrated embodiment, a circular positioning groove 4b is formed on the bottom surface of the body 40 of the movable contact 4, and the upper end of the spring 5 is housed and positioned in the positioning groove 4b of the body 40 of the movable contact 4.

[0037] As shown in Figures 1 to 6, in the illustrated embodiment, a positioning projection 1b is formed on the insulating seat portion 1, and the positioning projection 1b is inserted into the lower end of the spring 5 to position the lower end of the spring 5. The positioning groove 4b and the positioning projection 1b are arranged coaxially, spaced apart on both sides in the axial direction of the spring 5, thereby preventing radial displacement of the spring 5.

[0038] As shown in Figures 1 to 6, in the illustrated embodiment, the bottom of the limiting bracket 3 and the upper end of the drive shaft 2 are embedded in the insulating seat portion 1, and the insulating seat portion 1 electrically isolates the drive shaft 2 from the limiting bracket 3 and the spring 5.

[0039] As shown in Figures 1 to 6, in the illustrated embodiment, the insulating seat portion 1 is an injection-molded part injected onto the bottom of the limiting bracket 3 and the upper end of the drive shaft 2, and the insulating seat portion 1, the limiting bracket 3, and the drive shaft 2 are integrated into a single part.

[0040] As shown in Figures 1 to 6, in the illustrated embodiment, the insulating seat portion 1 includes a bottom wall 10 and a pair of side walls 11, the pair of side walls 11 being spaced apart on both sides in a second horizontal direction Y perpendicular to a first horizontal direction X. A positioning projection 1b is formed on the upper surface of the bottom wall 10 of the insulating seat portion 1, and an auxiliary contact pressing portion 18 is formed on the outside of one of the side walls 11 of the insulating seat portion 1.

[0041] As shown in Figures 1 to 6, in the illustrated embodiment, the upper end of the drive shaft 2 is embedded in the bottom wall 10 of the insulating seat portion 1, and the bottom of the limiting bracket 3 is embedded in a pair of side walls 11 and bottom wall 10 of the insulating seat portion 1.

[0042] As shown in Figures 1 to 6, in the illustrated embodiment, the limiting bracket 3 includes a pair of limiting portions 30 and a pair of fixing portions 31. The pair of limiting portions 30 are spaced apart from each other on both sides in the first horizontal direction X. The pair of fixing portions 31 are embedded in a pair of side walls 11 and bottom wall 10 of the insulating seat portion 1. The limiting portions 30 are in an inverted U shape, with one end of the pair of limiting portions 30 connected to the upper side of one fixing portion 31 and the other end connected to the upper side of the other fixing portion 31.

[0043] As shown in Figures 1 to 6, in the illustrated embodiment, the upper opening 301 of the limiting bracket 3 is located between a pair of limiting portions 30, and the pair of limiting portions 30 each define a pair of side openings 302 of the limiting bracket 3.

[0044] As shown in Figures 1 to 6, in the illustrated embodiment, the limiting section 30 includes a pair of vertical arms 30a and a horizontal arm 30b. The pair of vertical arms 30a extend along the vertical direction Z. The horizontal arm 30b is connected between the upper ends of the pair of vertical arms 30a. The lower ends of the pair of vertical arms 30a are respectively connected to the upper side of a pair of fixing sections 31.

[0045] As shown in Figures 1 to 6, in the illustrated embodiment, the horizontal arm 30b of the limiting section 30 is pressed against the upper surface of the body 40 of the movable contact 4, and the pair of vertical arms 30a of the limiting section 30 are located on both sides of the body 40 of the movable contact 4, respectively. The two ends of the body 40 of the movable contact 4 extend from the limiting bracket 3. In this way, it can be ensured that the pair of movable contacts 4a are located outside the limiting bracket 3.

[0046] As shown in Figures 1 to 6, another exemplary embodiment of the present invention also discloses a contactor. The contactor includes a housing (not shown), a pair of stationary contacts (not shown), and the aforementioned contactor movable contact assembly. An arc extinguishing chamber is formed in the housing. The pair of stationary contacts are fixed to the housing and have stationary contacts located in the arc extinguishing chamber. The contactor movable contact assembly is movably positioned in the arc extinguishing chamber. The movable contact 4 is suitable for moving from an open position, electrically isolated from the stationary contacts, to a closed position, electrically in contact with the stationary contacts, by driving a drive shaft 2.

[0047] As shown in Figures 1 to 6, in the illustrated embodiment, the contactor further comprises an auxiliary contact, which is mounted in the arc extinguishing chamber of the housing and can be switched between an open state and a closed state. When the movable contact 4 is moved from the open position to the closed position, the auxiliary contact is switched from the open state to the closed state, or from the closed state to the open state, by the drive of the auxiliary contact pressing part 18. Therefore, it is possible to accurately determine whether the movable contact is in the closed or open position based on the state of the auxiliary contact.

[0048] As shown in Figures 1 to 6, in the illustrated embodiment, the contactor further comprises an electromagnetic drive assembly (not shown), which is mounted on the housing to generate an electromagnetic drive force. The drive shaft 2 moves axially due to the action of the electromagnetic drive force generated by the electromagnetic drive assembly, which is suitable for driving the movable contact 4 to move between an open position and a closed position. The electromagnetic drive assembly typically includes a coil frame, a coil wound on the coil frame, a magnetic core inserted into the coil frame, a yoke, and a magnetic plate fixed to the coil frame. The magnetic core, yoke, and magnetic plate form a magnetic circuit.

[0049] Those skilled in the art will understand that the above embodiments are illustrative and not limiting. For example, many modifications to the above embodiments may be made by those skilled in the art, and the various features described in different embodiments may be freely combined with each other without structural or principle contradiction.

[0050] While several exemplary embodiments have been illustrated and described, those skilled in the art will understand that various modifications or changes can be made to these embodiments without departing from the principles and spirit of the disclosure. The scope of the disclosure is defined in the claims and its equivalents.

[0051] Where used herein, elements described in the singular and preceded by the words "a" or "an" should be understood not to exclude multiple such elements or steps unless otherwise expressly stated. Furthermore, references to "one embodiment" of the present invention are not intended to be construed as excluding the existence of additional embodiments that similarly incorporate the described features. Moreover, unless otherwise expressly stated, embodiments "comprising" or "having" one or more elements having a particular characteristic may include additional such elements that do not possess that characteristic.

Claims

1. A contactor movable contact assembly, Insulating seat portion (1), A drive shaft (2) located below the insulating seat portion (1) and fixed to the insulating seat portion (1), A limiting bracket (3) is located above the insulating seat portion (1) and fixed to the insulating seat portion (1), A movable contact (4) is movably attached to the limiting bracket (3) and is movable in the direction perpendicular (Z) to the limiting bracket (3), A spring (5) is attached to the limiting bracket (3) and is compressed axially between the movable contact (4) and the insulating seat portion (1). Equipped with, The insulating seat portion (1) has an auxiliary contact pressing portion (18), which is used to drive the auxiliary contact of the contactor to switch from an open state to a closed state, or from the closed state to the open state. Contactor movable contact assembly.

2. The contactor movable contact assembly according to claim 1, wherein the limiting bracket (3) has an upper opening (301) and a pair of side openings (302) on both sides in a first horizontal direction (X), the movable contact (4) is fitted to be inserted into the limiting bracket (3) through the side openings (302) of the limiting bracket (3), and the spring (5) is fitted to be inserted into the limiting bracket (3) through the upper opening (301) or the side openings (302) of the limiting bracket (3).

3. The movable contact (4) is The main unit (40) and A pair of movable contacts (4a) are formed on the upper surfaces of both ends of the main body (40) and Equipped with, The contactor movable contact assembly according to claim 1, wherein the pair of movable contacts (4a) are used to electrically contact the stationary contacts of the pair of stationary contacts of the contactor.

4. A circular positioning groove (4b) is formed on the bottom surface of the body (40) of the movable contact (4), and the upper end of the spring (5) is housed and positioned in the positioning groove (4b) of the body (40) of the movable contact (4), as described in claim 3.

5. A positioning projection (1b) is formed on the insulating seat portion (1), and the positioning projection (1b) is inserted into the lower end of the spring (5) to position the lower end of the spring (5). The contactor movable contact assembly according to claim 4, wherein the positioning groove (4b) and the positioning projection (1b) are arranged coaxially and spaced apart on both sides in the axial direction of the spring (5), thereby preventing radial displacement of the spring (5).

6. The contactor movable contact assembly according to claim 2, wherein the bottom of the limiting bracket (3) and the upper end of the drive shaft (2) are embedded in the insulating seat (1), and the insulating seat (1) electrically isolates the drive shaft (2) from the limiting bracket (3) and the spring (5).

7. The contactor movable contact assembly according to claim 6, wherein the insulating seat portion (1) is an injection-molded part at the bottom of the limiting bracket (3) and the upper end of the drive shaft (2), and the insulating seat portion (1), the limiting bracket (3), and the drive shaft (2) are integral parts.

8. The insulating seat portion (1) comprises a bottom wall (10) and a pair of side walls (11), the pair of side walls (11) being spaced apart on both sides in a second horizontal direction (Y) perpendicular to the first horizontal direction (X), The contactor movable contact assembly according to claim 5, wherein the positioning projection (1b) is formed on the upper surface of the bottom wall (10) of the insulating seat portion (1), and the auxiliary contact pressing portion (18) is formed on the outside of one side wall (11) of the insulating seat portion (1).

9. The contactor movable contact assembly according to claim 5, wherein the upper end of the drive shaft (2) is embedded in the bottom wall (10) of the insulating seat portion (1), and the bottom of the limiting bracket (3) is embedded in a pair of side walls (11) and the bottom wall (10) of the insulating seat portion (1).

10. The aforementioned limiting bracket (3) is A pair of limiting parts (30) are arranged on both sides of the first horizontal direction (X) at a distance from each other, The pair of fixing parts (31) embedded in the pair of side walls (11) and bottom wall (10) of the insulating seat portion (1) Equipped with, The contactor movable contact assembly according to claim 8, wherein the restricting portion (30) is in an inverted U shape, with one end of the pair of restricting portions (30) connected to the upper side of one fixing portion (31) and the other end connected to the upper side of the other fixing portion (31).

11. The contactor movable contact assembly according to claim 10, wherein the upper opening (301) of the limiting bracket (3) is located between the pair of limiting portions (30), and the pair of limiting portions (30) each define the pair of side openings (302) of the limiting bracket (3).

12. The limiting portion (30) is A pair of vertical arms (30a) extending along the vertical direction (Z), A horizontal arm (30a) is connected between the upper ends of the pair of vertical arms (30a) and Equipped with, The contactor movable contact assembly according to claim 10, wherein the lower ends of the pair of vertical arms (30a) are respectively connected to the upper side of the pair of fixed parts (31).

13. The contactor movable contact assembly according to claim 12, wherein the horizontal arm (30b) of the limiting portion (30) is pressed against the upper surface of the body (40) of the movable contact (4), the pair of vertical arms (30a) of the limiting portion (30) are located on both sides of the body (40) of the movable contact (4), and the two ends of the body (40) of the movable contact (4) extend from the limiting bracket (3).

14. It is a contactor, A housing in which an arc extinguishing chamber is formed, A pair of stationary contacts fixed to the housing, each having a stationary contact located in the arc extinguishing chamber, The contactor movable contact assembly according to any one of claims 1 to 13, which is movably disposed in the arc extinguishing chamber, Equipped with, The movable contact (4) is adapted to move from an open position, where it is electrically isolated from the stationary contact, to a closed position, where it is electrically in contact with the stationary contact, by the drive of the drive shaft (2). Contactor.

15. The housing further comprises an auxiliary contact that is attached to the arc extinguishing chamber and can be switched between an open state and a closed state, The contactor according to claim 14, wherein when the movable contact (4) is moved from the open position to the closed position, the auxiliary contact is switched from the open state to the closed state, or from the closed state to the open state, by the drive of the auxiliary contact pressing portion (18).

16. The housing further comprises an electromagnetic drive assembly attached to the housing for generating an electromagnetic drive force, The contactor according to claim 14, wherein the drive shaft (2) is adapted to move in the axial direction by the action of the electromagnetic drive force generated by the electromagnetic drive assembly, thereby driving the movable contact (4) to move between the open position and the closed position.

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