Contactor static contact, static contact assembly and contactor

Abstract

The utility model discloses a contactor static contact, a static contact assembly and a contactor. The contactor static contact comprises a static terminal and a static contact. The static terminal comprises a main body part which is used for being electrically connected to a load circuit so as to bear load current; and the heat dissipation plate is connected with one side of the main body part. And the static contact is arranged on the main body part and is used for electrically contacting with a moving contact of a moving contact of the contactor. The static terminal is an integrated piece, and heat of the static contact of the contactor can be transmitted to the shell of the contactor through the heat dissipation plate and dissipated to the outside through the shell, so that the heat dissipation performance of the contactor can be improved. In addition, the anti-short-circuit current capability of the contactor can be improved. Besides, in some embodiments of the utility model, the top opening of the housing of the contactor is sealed by the sealant poured into the top opening, so that external pollutants can be prevented from entering the housing, and the contact of the contactor is prevented from being polluted by the external pollutants.

Description

TECHNICAL FIELD

[0001] The utility model relates to a contactor static contact, including the static contact component of the contactor static contact and including the contactor of the static contact component. BACKGROUND

[0002] In the prior art, a non-gas-filled contactor generally includes an upper shell, a lower shell, a static contact, a movable contact, and an electromagnetic drive module. The upper shell defines an arc chamber, and a static terminal is fixed into the upper shell. The movable contact is movably disposed in the arc chamber of the upper shell. The electromagnetic drive module is installed in the lower shell for driving the movable contact to move between a closed position in electrical contact with the static contact and an open position electrically separated from the static contact. The upper shell and the lower shell are assembled together by a snap buckle. However, in the prior art, there is no any sealing between the upper shell and the lower shell, and external contaminated gas (e.g., gas containing Si, S) can enter the arc chamber, which can contaminate the contact of the movable contact and the static contact and affect the contact resistance of the contact. In addition, in the prior art, the static terminal of the static contact is generally a cylinder without a heat dissipation structure, which can cause the internal temperature of the contactor to be too high and affect the current-carrying performance. In addition, in the prior art, when a short circuit occurs in a load circuit, a short circuit current can generate an electric repulsion force between the movable contact and the static contact, and an excessively high short circuit current can cause the movable contact and the static contact to be accidentally disconnected. As the market demand for short circuit current is increasing, it is necessary to improve the short circuit resistance of the product. SUMMARY

[0003] The utility model aims to solve at least one aspect of the above problems and defects in the prior art.

[0004] According to one aspect of the utility model, a contactor static contact is provided. The contactor static contact includes a static terminal and a static contact point. The static terminal includes a main body portion for electrically connecting to a load circuit to carry a load current, and a heat dissipation plate connected to one side of the main body portion. The static contact point is disposed on the main body portion for electrically contacting a movable contact point of a movable contact of a contactor. The static terminal is a one-piece, and heat of the contactor static contact can be transferred to an outer shell of the contactor via the heat dissipation plate and dissipated to the outside via the outer shell.

[0005] According to one exemplary embodiment of the utility model, the main body portion of the static terminal includes a top plate, a bottom plate, and a side plate between one side of the top plate and the bottom plate, such that the main body portion of the static terminal is U-shaped and adapted to be sleeved onto an insulating seat of a contactor. The static contact point is fixed to the bottom surface of the bottom plate of the static terminal, and the top plate of the static terminal is used for electrically connecting to the load circuit.

[0006] According to another exemplary embodiment of the present application, the top plate of the static terminal is formed with a connecting hole allowing a bolt to pass through, so that the top plate of the static terminal can be fastened to the load circuit by the bolt.

[0007] According to another exemplary embodiment of the present application, the top plate and the bottom plate of the static terminal are perpendicular to the axial direction of the connecting hole, and the side plate extends downwardly and obliquely relative to the top plate.

[0008] According to another exemplary embodiment of the present application, the side plate of the static terminal is adapted to be fitted into a positioning groove on the insulating base, and a positioning hole is formed on the side plate of the static terminal and adapted to engage with a positioning column on the insulating base.

[0009] According to another exemplary embodiment of the present application, the heat dissipation plate comprises a first heat dissipation plate connected to one end of the top plate, the bottom plate or the side plate of the main body, and a second heat dissipation plate connected to the other end of the first heat dissipation plate perpendicularly. The second heat dissipation plate is adjacent to the housing of the contactor or is used to be in thermal contact with the housing of the contactor, so that the heat of the static contact of the contactor can be transmitted to the housing of the contactor via the second heat dissipation plate.

[0010] According to another exemplary embodiment of the present application, the static terminal is an integrated stamping member or an integrated machined member.

[0011] According to another aspect of the present application, a static contact assembly is provided. The static contact assembly comprises an insulating base and the aforementioned contactor static contact assembled on the insulating base. The heat dissipation plate of the static terminal is suspended on one side of the insulating base.

[0012] According to an exemplary embodiment of the present application, the top plate and the bottom plate of the static terminal are respectively located on the top surface and the bottom surface of the insulating base; a positioning groove is formed on the side surface between the top surface and the bottom surface of the insulating base, and the side plate of the static terminal is fitted into the positioning groove of the insulating base.

[0013] According to another exemplary embodiment of the present application, a positioning column is formed on the side surface of the insulating base, and the positioning column engages with the positioning hole on the side plate of the static terminal.

[0014] According to another exemplary embodiment of the present application, an insulating partition plate extending vertically upward is formed on the top surface of the insulating base, and the insulating partition plate is used to isolate the top plates of two static terminals to increase the creepage distance between the top plates of the two static terminals; an insulating protruding rib is formed on the bottom surface of the insulating base, and the insulating protruding rib is used to isolate the bottom plates of the two static terminals to increase the creepage distance between the bottom plates of the two static terminals.

[0015] According to another exemplary embodiment of the present application, the stationary contact assembly further comprises two nuts fixed in the insulating base and corresponding to the connecting holes on the top plates of the two stationary terminals respectively. The nuts are used to be threadedly connected with the bolts passing through the connecting holes to electrically connect the stationary terminals to the load circuit.

[0016] According to another exemplary embodiment of the present application, the stationary contact assembly further comprises an electromagnetic soft iron fixed in the insulating base, the electromagnetic soft iron being located between the two stationary terminals and used to attract the movable terminal assembly of the contactor to resist the electric repulsion force generated between the contactor stationary contact and the movable contact of the contactor.

[0017] According to another exemplary embodiment of the present application, the nut or the electromagnetic soft iron is assembled into the insulating base; or the insulating base is directly injection molded on the nut or the electromagnetic soft iron.

[0018] According to another aspect of the present application, a contactor is provided. The contactor comprises a housing including a peripheral wall, a bottom wall, and a top opening opposite to the bottom wall; a movable contact module installed into the housing and including a movable contact; and a stationary contact module installed into the housing and located above the movable contact module. The contactor stationary contact module comprises an inner housing; and the aforementioned stationary contact assembly assembled into the inner housing. A sealant is filled in the top opening of the housing to seal the top opening of the housing, and the top surface of the stationary terminal is externally exposed from the sealant for electrical connection to the load circuit.

[0019] According to an exemplary embodiment of the present application, the heat dissipation plate of the stationary terminal is adjacent to or in thermal contact with the inner side surface of the housing, so that the heat of the contactor stationary contact can be transferred to the housing via the heat dissipation plate and dissipated to the outside of the contactor via the housing.

[0020] According to another exemplary embodiment of the present application, an arc extinguishing chamber is defined inside the inner housing, the stationary contact point of the contactor stationary contact and the movable contact being located in the arc extinguishing chamber; and the movable contact module further comprises an electromagnetic drive module for driving the movable contact to move between a closed position in electrical contact with the stationary contact point and an open position electrically separated from the stationary contact point.

[0021] According to another exemplary embodiment of the present application, the electromagnetic drive module comprises a coil assembly, the coil assembly comprises a coil skeleton and a coil wound on the coil skeleton, a mating portion with an insertion cavity is formed on the outer side of the peripheral wall of the shell, the coil has a coil terminal extending into the insertion cavity, and the mating portion and the coil terminal constitute a connector interface for mating with a connector.

[0022] According to another exemplary embodiment of the present application, the electromagnetic drive module comprises a coil assembly, the coil assembly comprises a coil skeleton and a coil wound on the coil skeleton; a mating portion with an insertion cavity is formed on the outer side of the peripheral wall of the shell, the coil has a coil terminal extending into the insertion cavity, and the mating portion and the coil terminal constitute a connector interface for mating with a connector.

[0023] According to another exemplary embodiment of the present application, an outer flange is formed on the outer side of the inner shell, and an inner flange is formed on the inner side of the shell; the contactor further comprises a sealing ring, the sealing ring is sleeved on the inner shell and is pressed between the outer flange and the inner flange to realize the sealing between the inner shell and the shell.

[0024] In the foregoing exemplary embodiments of the present application, the static terminal of the contactor has a heat dissipation plate, so that the heat of the static terminal can be transmitted to the shell of the contactor through the heat dissipation plate and dissipated to the outside through the shell, thereby improving the heat dissipation performance of the contactor.

[0025] In addition, in some of the foregoing exemplary embodiments of the present application, the static terminal of the contactor is U-shaped and is provided with an electromagnetic soft iron magnetizable under a short-circuit large current in the insulating seat for adsorbing the moving terminal assembly, and therefore, the short-circuit current resistance of the contactor can be improved.

[0026] In addition, in some of the foregoing exemplary embodiments of the present application, the sealant injected into the top opening of the shell of the contactor is sealed, thereby effectively preventing external pollutants from entering the shell, so that the contacts of the moving contact and the static contact of the contactor are not contaminated by external pollutants.

[0027] Other purposes and advantages of the present application will be apparent from the following description of the present application with reference to the accompanying drawings, and can help to have a comprehensive understanding of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 shows a perspective view of a contactor according to one example embodiment of the present application;

[0029] Figure 2 shows an exploded view of a contactor according to one example embodiment of the present application;

[0030] Figure 3 shows a perspective view of a contactor according to one example embodiment of the present application, wherein the sealant has not yet been poured into the top opening of the housing;

[0031] Figure 4 shows a perspective view of the stationary contact module and the movable contact module of a contactor according to one example embodiment of the present application;

[0032] Figure 5 shows a perspective view of the stationary contact module and the movable contact module of a contactor according to one example embodiment of the present application;

[0033] Figure 6 shows a perspective view of a contactor according to one example embodiment of the present application;

[0034] Figure 7 shows an exploded view of a contactor according to one example embodiment of the present application;

[0035] Figure 8 shows a perspective view of a contactor according to one example embodiment of the present application;

[0036] Figure 9 shows a cross-sectional view of a contactor according to one example embodiment of the present application;

[0037] Figure 10 shows an exploded view of a contactor according to one example embodiment of the present application, as viewed from the top;

[0038] Figure 11 shows an exploded view of a contactor according to one example embodiment of the present application, as viewed from the bottom;

[0039] Figure 12 shows a perspective view of a contactor according to another example embodiment of the present application;

[0040] Figure 13 shows an exploded view of a contactor according to another example embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions of the utility model will be further explained in detail below by way of examples and in conjunction with the drawings. In the description, identical or similar reference signs indicate identical or similar components. The following description of the utility model embodiments with reference to the drawings is intended to explain the general utility model concept of the utility model and should not be understood as a limitation of the utility model.

[0042] In addition, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent, however, that one or more embodiments can be practiced without these specific details. In other instances, well-known structures and devices are not described in detail in order to simplify the drawings.

[0043] According to one general technical concept of the utility model, a contactor static contact is provided. The contactor static contact comprises a static terminal and a static contact point. The static terminal comprises a main body part for electrically connecting to a load circuit to carry a load current, and a heat sink plate connected to one side of the main body part. The static contact point is arranged on the main body part for electrically contacting a moving contact point of a moving contact of a contactor. The static terminal is a one-piece, and heat of the contactor static contact can be transferred to a housing of the contactor via the heat sink plate and dissipated to the outside via the housing.

[0044] According to another general technical concept of the utility model, a static contact assembly is provided. The static contact assembly comprises an insulating seat, and the aforementioned contactor static contact assembled to the insulating seat. The heat sink plate of the static terminal is suspended on one side of the insulating seat.

[0045] According to another general technical concept of the utility model, a contactor is provided. The contactor comprises a housing comprising a peripheral wall, a bottom wall, and a top opening opposite to the bottom wall, a moving contact module installed into the housing and comprising a moving contact, and a static contact module installed into the housing and located above the moving contact module. The contactor static contact module comprises an inner housing, and the aforementioned static contact assembly assembled into the inner housing. A sealant is injected into the top opening of the housing to seal the top opening of the housing, and a top surface of the static terminal is externally exposed from the sealant for electrically connecting to a load circuit.

[0046] Figure 1 A perspective view of a contactor according to an exemplary embodiment of the utility model is shown; Figure 2 An exploded view of a contactor according to an exemplary embodiment of the utility model is shown; Figure 3 A perspective view of a contactor according to an exemplary embodiment of the utility model is shown, wherein a sealant 4 has not been injected into a top opening 301 of a housing 3.Figure 4 A perspective view of a contactor stationary contact module 110 and a moving contact module 200 according to an exemplary embodiment of the present invention is shown. Figure 5 A schematic diagram showing the housing 3 and the baffle plate 31 of a contactor according to an exemplary embodiment of the present invention; Figure 6 A perspective view of the stationary contact module 110 of a contactor according to an exemplary embodiment of the present invention is shown. Figure 7 An exploded view of the stationary contact module 110 of a contactor according to an exemplary embodiment of the present invention is shown. Figure 8 A perspective view of a stationary contact assembly 120 of a contactor according to an exemplary embodiment of the present invention is shown. Figure 9 Showing a cross-sectional view of the stationary contact assembly 120 of a contactor according to an exemplary embodiment of the present invention; Figure 10 An exploded view from top of the stationary contact assembly 120 of a contactor according to an exemplary embodiment of the present invention; Figure 11 This is an exploded view of the stationary contact assembly 120 of a contactor according to an exemplary embodiment of the present invention, viewed from the bottom.

[0047] like Figures 1 to 11 As shown, in an exemplary embodiment of this utility model, a contactor stationary contact 1 is disclosed. The contactor stationary contact 1 includes a stationary terminal 100 and a stationary contact 1a. The stationary terminal 100 includes a main body 10 and a heat sink 14. The main body 10 is used for electrical connection to a load circuit (not shown) to carry load current. The heat sink 14 is connected to one side of the main body 10. The stationary contact 1a is disposed on the main body 10 and is used for electrical contact with the moving contact 2a of the contactor's moving contact 2. The stationary terminal 100 is a single piece. For example, the stationary terminal 100 can be a single-piece stamped part or a single-piece machined part. The heat from the contactor stationary contact 1 can be transferred to the contactor's housing 3 via the heat sink 14 and dissipated to the outside via the housing 3, thereby improving the contactor's heat dissipation performance.

[0048] like Figures 1 to 11 As shown in the illustrated embodiment, the main body 10 of the stationary terminal 100 includes a top plate 11, a bottom plate 12, and a side plate 13 located between one side of the top plate 11 and the bottom plate 12, such that the main body 10 of the stationary terminal 100 is U-shaped and adapted to be fitted onto the insulating base 15 of the contactor. The stationary contact 1a is fixed to the bottom surface of the bottom plate 12 of the stationary terminal 100, and the top plate 11 of the stationary terminal 100 is used for electrical connection to the load circuit.

[0049] like Figures 1 to 11As shown in the illustrated embodiment, the top plate 11 of the static terminal 100 is formed with a connection hole 111 allowing a bolt (not shown) to pass through, so that the top plate 11 of the static terminal 100 can be fastened to the load circuit by the bolt.

[0050] As shown in the illustrated embodiment, the top plate 11 and the bottom plate 12 of the static terminal 100 are perpendicular to the axis of the connection hole 111, and the side plate 13 extends downwardly and obliquely relative to the top plate 11. Figures 1 to 11 As shown in the illustrated embodiment, the side plate 13 of the static terminal 100 is adapted to be fitted into the positioning groove 150 on the insulating seat 15, and the positioning hole 131 adapted to engage with the positioning post 153 on the insulating seat 15 is formed on the side plate 13 of the static terminal 100.

[0051] Figures 1 to 11 As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142.

[0052] As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142. Figures 1 to 11 As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142.

[0053] Figures 1 to 11 As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142.

[0054] As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142. Figures 1 to 11 As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142.

[0055] Figures 1 to 11 As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142.

[0056] As shown in the illustrated embodiment, the heat dissipation plate 14 comprises a first heat dissipation plate 141 and a second heat dissipation plate 142. One end of the first heat dissipation plate 141 is connected to the top plate 11, the bottom plate 12 or the side plate 13 of the main body 10. The second heat dissipation plate 142 is connected perpendicularly to the other end of the first heat dissipation plate 141. The second heat dissipation plate 142 is adjacent to or in thermal contact with the housing 3 of the contactor, so that the heat of the contactor static contact 1 can be transmitted to the housing 3 of the contactor via the second heat dissipation plate 142. Figures 1 to 11 ​​​As shown in the illustrated embodiment, an insulating partition 151 extending vertically upward is formed on the top surface of the insulating base 15. The insulating partition 151 is used to separate the top plates 11 of the two stationary terminals 100 to increase the creepage distance between the top plates 11 of the two stationary terminals 100. An insulating rib 152 is formed on the bottom surface of the insulating base 15. The insulating rib 152 is used to separate the bottom plates 12 of the two stationary terminals 100 to increase the creepage distance between the bottom plates 12 of the two stationary terminals 100.

[0057] like Figures 1 to 11 As shown in the illustrated embodiment, the stationary contact assembly further includes two nuts 17. The two nuts 17 are secured in the insulating base 15 and correspond to connection holes 111 on the top plates 11 of the two stationary terminals 100, respectively. The nuts 17 are threaded into bolts passing through the connection holes 111 to electrically connect the stationary terminals 100 to the load circuit.

[0058] like Figures 1 to 11 As shown in the illustrated embodiment, the stationary contact assembly further includes an electromagnetic soft iron 18, which is fixed in the insulating base 15. The electromagnetic soft iron 18 is located between the two stationary terminals 100 and is used to attract the moving terminal assembly 20 of the contactor to resist the electrical repulsion force generated between the stationary contact 1 and the moving contact 2 of the contactor. The electromagnetic soft iron 18 is a magnetic conductor and can be magnetized by the current flowing through the contacts of the contactor.

[0059] like Figures 1 to 11 As shown in the illustrated embodiment, the nut 17 or the electromagnetic soft iron 18 can be assembled into the insulating base 15. However, the present invention is not limited to this, and the insulating base 15 can also be directly injection molded onto the nut 17 or the electromagnetic soft iron 18.

[0060] like Figures 1 to 11 As shown, in another exemplary embodiment of this utility model, a contactor is also disclosed. The contactor includes: a housing 3, a moving contact module 200, and a stationary contact module 110. The housing 3 includes a peripheral wall, a bottom wall, and a top opening 301 opposite to the bottom wall. The moving contact module 200 is mounted into the housing 3 via the top opening 301. The moving contact module 200 includes a moving contact 2. The stationary contact module 110 is mounted into the housing 3 via the top opening 301 and is located above the moving contact module 200. The stationary contact module 110 includes: an inner housing 16 and a stationary contact assembly 120. The stationary contact assembly 120 is assembled into the inner housing 16. Sealant 4 is injected into the top opening 301 of the housing 3 to seal the top opening 301 of the housing 3, and the top surface of the stationary terminal 100 is exposed from the sealant 4 for electrical connection to a load circuit.

[0061] like Figures 1 to 11As shown in the illustrated embodiment, the heat sink 14 of the static terminal 100 is adjacent to or in thermal contact with the inner side of the housing 3, so that the heat of the contactor static contact 1 can be transferred to the housing 3 via the heat sink 14 and dissipated to the outside of the contactor via the housing 3.

[0062] As shown in the illustrated embodiment, the electromagnetic drive module comprises a coil assembly, which comprises a coil former 21 and a coil 22 wound on the coil former 21. Figures 1 to 11 As shown in the illustrated embodiment, the arc-extinguishing chamber 160 is defined inside the inner shell 16, and the static contact point 1a of the contactor static contact 1 and the movable contact 2 are located in the arc-extinguishing chamber 160. The movable contact module 200 further comprises an electromagnetic drive module for driving the movable contact 2 to move between a closed position in electrical contact with the static contact point 1a and an open position electrically separated from the static contact point 1a.

[0063] As shown in the illustrated embodiment, the electromagnetic drive module comprises a coil assembly, which comprises a coil former 21 and a coil 22 wound on the coil former 21. Figure 12 As shown in the illustrated embodiment, the electromagnetic drive module comprises a coil assembly, which comprises a coil former 21 and a coil 22 wound on the coil former 21. The coil former 21 is formed with a mating portion 210 having an insertion cavity 201, and the coil 22 has coil terminals (not shown) extending into the insertion cavity 201. The mating portion 210 and the coil terminals constitute a connector interface for mating with a connector (not shown). A slot hole 302 is formed on the peripheral wall of the housing 3 and extends from the upper end thereof towards the outside, and the mating portion 210 extends out of the housing 3 via the slot hole 302. The contactor further comprises a glue blocking plate 31 inserted into the slot hole 302 of the housing 3 to prevent the sealant 4 injected into the top opening 301 of the housing 3 from flowing out of the housing 3.

[0064] Figure 12 A perspective view of a contactor according to another exemplary embodiment of the present application is shown.

[0065] Figures 1 to 11 The contactor shown in Figure 12 The main difference between the contactor shown in Figures 1 to 11 The other technical features of the contactor shown in Figures 1 to 11 The contactor shown in Figure 12 The contactor shown in

[0066] As shown in the illustrated embodiment, the electromagnetic drive module comprises a coil assembly, which comprises a coil former 21 and a coil 22 wound on the coil former 21. Figure 12 As shown in the illustrated embodiment, the electromagnetic drive module comprises a coil assembly, which comprises a coil former 21 and a coil 22 wound on the coil former 21. The coil former 21 is formed with a mating portion 210 having an insertion cavity 201, and the coil 22 has coil terminals (not shown) extending into the insertion cavity 201. The mating portion 210 and the coil terminals constitute a connector interface for mating with a connector (not shown). A slot hole 302 is formed on the peripheral wall of the housing 3 and extends from the upper end thereof towards the outside, and the mating portion 210 extends out of the housing 3 via the slot hole 302. The contactor further comprises a glue blocking plate 31 inserted into the slot hole 302 of the housing 3 to prevent the sealant 4 injected into the top opening 301 of the housing 3 from flowing out of the housing 3. Figure 13 In the illustrated embodiment, the aforementioned glue blocking plate 31 is omitted, simplifying the structure of the contactor and reducing manufacturing costs.

[0067] Figure 13 Fig. 2 shows an exploded schematic view of a contactor according to another exemplary embodiment of the present application.

[0068] As shown in the illustrated embodiment, an outer flange 161 is formed on the outer side of the inner shell 16, and an inner flange 32 is formed on the inner side of the outer shell 3. The contactor further comprises a sealing ring 162 which is sleeved on the inner shell 16 and is pressed between the outer flange 161 and the inner flange 32 to achieve sealing between the inner shell 16 and the outer shell 3. ​ Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can make improvements thereto, and the structures described in various embodiments can be freely combined without structural or principle conflicts, and these changes shall fall within the protection scope of the present application.

[0069] Although the present application has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present application, and cannot be understood as a limitation of the present application.

[0070] Although some embodiments of the general concept of the present application have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present application, and the scope of the present application is defined by the claims and their equivalents.

[0071] It should be noted that the wording "comprising" does not exclude other elements or steps, and the wording "a" or "one" does not exclude a plurality. In addition, any reference signs in the claims should not be understood as limiting the scope of the present application.

[0072] It should be noted that the wording "comprising" does not exclude other elements or steps, and the wording "a" or "one" does not exclude a plurality. In addition, any reference signs in the claims should not be understood as limiting the scope of the present application.

Claims

1. A contactor stationary contact, characterized by, Comprising: a static terminal (100) comprising: a body portion (10) for electrically connecting to a load circuit to carry a load current; and a heat dissipation plate (14) connected to one side of the body portion (10); and a static contact point (1a) provided on the body portion (10) for electrically contacting a moving contact point (2a) of a moving contact (2) of a contactor, the static terminal (100) being a one-piece member, heat of the contactor static contact (1) being able to be transferred to a housing (3) of the contactor via the heat dissipation plate (14) and dissipated to the outside via the housing (3).

2. The contactor static contact according to claim 1, wherein: the body portion (10) of the static terminal (100) comprises a top plate (11), a bottom plate (12) and a side plate (13) between one side of the top plate (11) and the bottom plate (12), such that the body portion (10) of the static terminal (100) is U-shaped and adapted to be sleeved onto an insulating seat (15) of a contactor; the static contact point (1a) is fixed to a bottom surface of the bottom plate (12) of the static terminal (100), and the top plate (11) of the static terminal (100) is used for electrically connecting to the load circuit.

3. The contactor static contact according to claim 2, wherein: a connecting hole (111) allowing a bolt to pass through is formed on the top plate (11) of the static terminal (100), such that the top plate (11) of the static terminal (100) can be fastened to the load circuit by the bolt.

4. The contactor static contact according to claim 3, wherein: the top plate (11) and the bottom plate (12) of the static terminal (100) are perpendicular to an axial direction of the connecting hole (111), and the side plate (13) extends downwardly and obliquely relative to the top plate (11).

5. The contactor static contact according to claim 2, wherein: the side plate (13) of the static terminal (100) is adapted to be embedded into a positioning groove (150) on the insulating seat (15), and a positioning hole (131) adapted to engage with a positioning column (153) on the insulating seat (15) is formed on the side plate (13) of the static terminal (100).

6. The contactor static contact according to claim 2, wherein: the heat dissipation plate (14) comprises: a first heat dissipation plate (141) connected to one side of the top plate (11), the bottom plate (12) or the side plate (13) of the body portion (10); and a second heat dissipation plate (142) connected to the other end of the first heat dissipation plate (141) perpendicularly, the second heat dissipation plate (142) is adjacent to or used for being in thermal contact with the housing (3) of the contactor, such that heat of the contactor static contact (1) is able to be transferred to the housing (3) of the contactor via the second heat dissipation plate (142).

7. The contactor static contact according to claim 1, wherein: the static terminal (100) is a one-piece stamping member or a one-piece machined member.

8. A stationary contact assembly, characterized by Comprising: an insulating seat (15); and ​ Two contactor static contacts (1) according to any one of claims 1-7 are assembled to the insulating base (15), The heat sink (14) of the static terminal (100) is suspended on one side of the insulating base (15).

9. The static contact assembly according to claim 8, characterized in that: The top plate (11) and the bottom plate (12) of the static terminal (100) are respectively located on the top surface and the bottom surface of the insulating base (15); A positioning groove (150) is formed on the side surface between the top surface and the bottom surface of the insulating base (15), and the side plate (13) of the static terminal (100) is embedded in the positioning groove (150) of the insulating base (15).

10. The static contact assembly according to claim 9, characterized in that: A positioning column (153) is formed on the side surface of the insulating base (15), and the positioning column (153) is engaged with the positioning hole (131) on the side plate (13) of the static terminal (100).

11. The static contact assembly according to claim 9, characterized in that: An insulating partition plate (151) extending vertically upward is formed on the top surface of the insulating base (15), and the insulating partition plate (151) is used to isolate the top plates (11) of two static terminals (100) to increase the creepage distance between the top plates (11) of the two static terminals (100); An insulating convex rib (152) is formed on the bottom surface of the insulating base (15), and the insulating convex rib (152) is used to isolate the bottom plates (12) of the two static terminals (100) to increase the creepage distance between the bottom plates (12) of the two static terminals (100).

12. The stationary contact assembly of claim 9, wherein, Further comprising: Two nuts (17) are fixed in the insulating base (15) and correspond to the connecting holes (111) on the top plates (11) of the two static terminals (100) respectively, The nuts (17) are used to be threadedly connected with bolts passing through the connecting holes (111) to electrically connect the static terminals (100) to a load circuit.

13. Stationary contact assembly according to claim 12, characterized in that Further comprising: An electromagnetic soft iron (18) is fixed in the insulating base (15), The electromagnetic soft iron (18) is located between the two static terminals (100) and is used to attract a contactor moving terminal assembly (20) to resist the electric repulsion force generated between the contactor static contact (1) and a contactor moving contact (2).

14. The static contact assembly according to claim 13, characterized in that: The nuts (17) or the electromagnetic soft iron (18) are assembled into the insulating base (15); or The insulating base (15) is directly injection molded on the nuts (17) or the electromagnetic soft iron (18).

15. A contactor characterized by Comprising: A housing (3) including a peripheral wall, a bottom wall, and a top opening (301) opposite to the bottom wall; A moving contact module (200) installed into the housing (3) and including a moving contact (2); And A static contact module (110) installed into the housing (3) and located above the moving contact module (200), The static contact module (110) comprises: An inner housing (16); And The stationary contact assembly (120) of any one of claims 8-14, assembled into the inner housing (16), A sealant (4) is filled in the top opening (301) of the outer housing (3) to seal the top opening (301) of the outer housing (3), a top surface of the stationary terminal (100) is exposed outside the sealant (4) for electrical connection to a load circuit.

16. The contactor of claim 15, wherein: A heat sink (14) of the stationary terminal (100) is adjacent to or in thermal contact with an inner side of the outer housing (3) so that heat of the contactor stationary contact (1) can be transferred to the outer housing (3) via the heat sink (14) and dissipated to outside of the contactor via the outer housing (3).

17. The contactor of claim 15, wherein: An arc extinguishing chamber (160) is defined inside the inner housing (16), the stationary contact point (la) of the contactor stationary contact (1) and the movable contact (2) are located in the arc extinguishing chamber (160); and The movable contact module (200) further comprises an electromagnetic drive module for driving the movable contact (2) to move between a closed position in electrical contact with the stationary contact point (la) and an open position in electrical separation from the stationary contact point (la).

18. The contactor of claim 17, wherein: The electromagnetic drive module comprises a coil assembly including a coil former (21) and a coil (22) wound on the coil former (21), a mating portion (210) with an insertion cavity (201) is formed on the coil former (21), the coil (22) has coil terminals extending into the insertion cavity (201), the mating portion (210) and the coil terminals constitute a connector interface for mating with a connector; A slot hole (302) is formed on a peripheral wall of the outer housing (3) extending from an upper end surface thereof, the mating portion (210) extends out of the outer housing (3) via the slot hole (302), the contactor further comprises a glue blocking plate (31) inserted into the slot hole (302) of the outer housing (3) to prevent the sealant (4) filled into the top opening (301) of the outer housing (3) from flowing out of the outer housing (3).

19. The contactor of claim 17, wherein: The electromagnetic drive module comprises a coil assembly including a coil former (21) and a coil (22) wound on the coil former (21); A mating portion (210) with an insertion cavity (201) is formed on an outer side of a peripheral wall of the outer housing (3), the coil (22) has coil terminals extending into the insertion cavity (201), the mating portion (210) and the coil terminals constitute a connector interface for mating with a connector.

20. The contactor of claim 19, wherein: A circle of outer flange (161) is formed on the outside of the inner shell (16), and a circle of inner flange (32) is formed on the inside of the outer shell (3); The contactor further comprises a sealing ring (162) which is sleeved on the inner shell (16) and is pressed between the outer flange (161) and the inner flange (32) to realize the sealing between the inner shell (16) and the outer shell (3).

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