Contactor

Abstract

A contactor comprises a contact system, an electromagnetic system and an interlocking module, the contact system comprises a static contact, a moving contact and a contact support, the moving contact is arranged on the contact support, the electromagnetic system is used for driving the contact support to move so that the moving contact can make contact with and be separated from the static contact, and the interlocking module comprises a support and an interlocking piece rotationally arranged on the support. The support is fixedly arranged in a shell of the contactor, and the interlocking piece is used for limiting the contact support and the contact support of the adjacent contactor, so that when the contactor and one of the adjacent contactors are switched on, the interlocking piece locks the contact support of the other contactor, and the locked contactor cannot be switched on. The side, facing the adjacent contactor, of the interlocking piece is further provided with a first limiting part in a protruding mode, the first limiting part is used for limiting the adjacent contactor to prevent the interlocking piece from falling off, overall installation is convenient, the interlocking module is hidden in the contactor shell, a face cover of the contactor does not need to be opened in the assembling process, and the assembling efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, and particularly relates to a contactor. Background Art

[0002] The development trend of existing contactors is towards miniaturization of volume, compactness of structure, internalization of accessories, convenience of wiring, and diversification of functions.

[0003] However, the interlock module of existing contactors has a complex structure. The rotation center of the interlock module needs to be set in the middle of two contactors, which requires adding redundant installation structures and has multiple parts, resulting in troublesome assembly. Additionally, when assembling the interlock module of existing contactors, the panel of the contactor needs to be removed, and the assembly is also very cumbersome. Moreover, for the interlock module of existing contactors, the contact supports of two contactors need to be symmetrically arranged with the interlock module as the center, leading to the problem of larger volume of the contactor. Summary of the Invention

[0004] The purpose of the utility model is to overcome at least one defect of the prior art and provide a contactor.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A contactor includes a contact system and an electromagnetic system. The contact system includes a static contact, a moving contact, and a contact support. The moving contact is arranged on the contact support. The electromagnetic system includes a moving iron core and a coil for driving the movement of the moving iron core. The moving iron core is connected to the contact support to drive the movement of the contact support, so that the moving contact contacts and separates from the static contact.

[0007] It further includes an interlock module. The interlock module includes a bracket and an interlock member rotatably arranged on the bracket. The bracket is fixedly arranged in the housing of the contactor. The interlock member includes a pivot part rotatably connected to the bracket, and a first locking part and a second locking part oppositely arranged on both sides of the pivot part. The second locking part and the first locking part on the interlock member are respectively used to limit the contact support and the contact support of the adjacent contactor. When one of the contactor and the adjacent contactor is closed, the interlock member locks the contact support of the other contactor, making it impossible for the locked contactor to be closed.

[0008] The housing of the contactor is provided with an interlock installation hole on the side wall in contact with the adjacent contactor. The bracket is provided with a rotation hole. One side of the rotation hole facing the interlock installation hole is provided with an opening communicating with the rotation hole, so that the interlock member is installed through the interlock installation hole and its pivot part is installed into the rotation hole of the bracket through the opening. The interlock member further protrudes with a first limiting part on the side facing the interlock installation hole for limiting the adjacent contactor to prevent the interlock member from falling off.

[0009] Preferably, the interlock member further has a second limiting portion, and the first limiting portion and the second limiting portion are respectively disposed on both sides of the pivot portion.

[0010] Preferably, the first limiting portion and the second limiting portion respectively have a first limiting surface and a second limiting surface on the side away from the pivot portion, and the distance from the first limiting surface to the pivot portion is greater than the distance from the second limiting surface to the pivot portion.

[0011] Preferably, the first limiting portion and the second limiting portion have different sizes, and the sum of the weights of the first limiting portion and the first locking portion is equal to the sum of the weights of the second limiting portion and the second locking portion.

[0012] Preferably, the first limiting portion has a first limiting surface on the side away from the pivot portion, the first limiting surface is disposed opposite to the housing of the adjacent contactor, and there is a gap between the first limiting surface and the housing of the adjacent contactor. The first limiting surface does not contact the housing of the adjacent contactor when the interlock member rotates, and the gap is smaller than the diameter of the pivot portion to prevent the interlock member from falling off.

[0013] Preferably, a cover is provided outside the contact support, the second limiting surface is disposed opposite to the cover of the contactor where the interlock member is located, and there is a gap between the second limiting surface and the cover. The second limiting surface does not contact the cover when the interlock member rotates.

[0014] Preferably, the first locking portion and the second locking portion have the same size and the same weight, the first limiting portion and the second limiting portion have the same weight, the length of the first limiting portion is greater than the length of the second limiting portion, and the width of the first limiting portion is smaller than the width of the second limiting portion.

[0015] Preferably, an auxiliary support portion is provided at the center of the contact support, and an interlock rod spaced from the auxiliary support portion is provided on one side of the auxiliary support portion. The second locking portion and the first locking portion on the interlock member are respectively used to be inserted into the auxiliary support portion and the interlock rod of the adjacent contactor to realize the interlock between the contactor and the adjacent contactor.

[0016] Preferably, the distances from the pivot portion on the interlock member to the auxiliary support portion and the interlock rod of the adjacent contactor are equal, and the auxiliary support portion of the contactor where the interlock member is located and the auxiliary support portion of the adjacent contactor are not symmetrically arranged with the pivot portion as the center.

[0017] Preferably, the contact support includes a sliding part arranged in a sliding manner, the auxiliary support part is arranged in the center above the sliding part, the interlocking rod and the interlocking part are oppositely arranged on both sides of the auxiliary support part, the sliding part of the contactor where the interlocking part is located, and the sliding parts of adjacent contactors are not symmetrically arranged with the pivot part as the center. The interlocking rod is provided with an external interlocking groove that cooperates with the first locking part of the interlocking part of the adjacent contactor, and the side of the auxiliary support part away from the interlocking rod is provided with an internal interlocking groove that cooperates with the second locking part of the interlocking part of the contactor where it is located.

[0018] Preferably, the bracket includes two clamping plates arranged oppositely, and rotation holes are respectively arranged on the two clamping plates. One side of the pivot groove is provided with an opening for inserting the pivot part.

[0019] Preferably, the pivot part is provided with an indication mark opposite to the opening.

[0020] Preferably, it includes a first functional module, a second functional module, and a third functional module. The second functional module is arranged between the first functional module and the third functional module.

[0021] The first functional module is provided with an electromagnetic system. The electromagnetic system includes a moving iron core and a coil for driving the moving iron core to move. The third functional module is provided with the interlocking module and two coil connection terminals for connecting to the control circuit.

[0022] The second functional module includes a contact system and contact connection terminals for connecting to the working circuit. The contact system includes a static contact and a moving contact driven by the electromagnetic system. The static contact is connected to the working circuit through the contact connection terminals.

[0023] The second functional module further includes a coil connection structure for electrically connecting the coil connection terminals and the coil. Both ends of the coil are respectively connected to the two coil connection terminals through the coil connection structure and are connected to the control circuit. The control circuit controls the coil to drive the moving iron core to act, so that the iron core drives the moving contact to contact and separate from the static contact, so as to conduct and disconnect the working circuit connected to the contact connection terminals respectively.

[0024] Preferably, the interlocking module is arranged at an interval from the two coil connection terminals, and the interlocking module and the two coil connection terminals are oppositely arranged on both sides of the third functional module. Two auxiliary contact modules are arranged between the interlocking module and the two coil connection terminals, and a surge protection module is arranged between the two coil connection terminals.

[0025] Preferably, the contact support is provided with an auxiliary support portion inserted into the third functional module. The auxiliary contact module includes two auxiliary static contacts arranged at intervals, and auxiliary connection terminals respectively arranged on the auxiliary static contacts. The auxiliary support portion is used to be inserted between the two auxiliary static contacts of the auxiliary contact module. An auxiliary moving contact for electrically connecting with the two auxiliary static contacts is arranged on the auxiliary support portion. When the contact support drives the moving contact to contact and separate from the static contact, the auxiliary moving contact can be driven to move to contact and separate from the auxiliary static contact at the same time, so as to switch the output state of the auxiliary contact module.

[0026] Preferably, an auxiliary support groove is arranged on the auxiliary support portion. Auxiliary spring platforms for fixing the auxiliary contact spring and auxiliary limiting surfaces for limiting the auxiliary moving contact are respectively arranged on two opposite groove walls of the auxiliary support groove. The auxiliary contact spring is used to push the middle part of the auxiliary moving contact, so that the middle part of the auxiliary moving contact is limited by the auxiliary limiting surface. The two ends of the auxiliary moving contact respectively extend to both sides of the auxiliary support portion. When the auxiliary moving contact contacts with the auxiliary static contact, the auxiliary contact spring is compressed and pushes the auxiliary moving contact, so that the auxiliary moving contact is pressed against the auxiliary static contact.

[0027] Preferably, the second functional module includes a base and a cover sleeve outside the base. The third functional module includes a face cover. The cover is clamped onto the base along a first direction, and the face cover is clamped onto the cover along a second direction, or clamped onto a structure outside the cover extending from the base. The first direction and the second direction are perpendicularly arranged, and the bracket is integrally formed with the base.

[0028] The interlock module of the contactor of the present utility model includes a bracket and an interlock member rotatably arranged on the bracket. The bracket of the interlock module is fixedly arranged in one of the contactors, the interlock member is installed on the bracket of one of the contactors, and the pivot portion of the interlock member is located in one of the contactors as the rotation center, rather than symmetrically located between the two contactors. Therefore, when the interlock module is used, there is no need to set a complex installation structure, and only one interlock member needs to be installed. And when assembling the interlock member, the interlock member is inserted into the contactor through the interlock installation hole on the side wall of the contactor, the pivot portion of the interlock member is installed into the rotation hole of the bracket through the opening, and the first limiting portion is used to prevent the interlock member from falling off from the opening. The overall installation is convenient and the interlock module is hidden in the contactor housing. When assembling, it is not necessary to open the face cover of the contactor, and the assembly efficiency is high.

[0029] In addition, by arranging an auxiliary support portion at the center of the contact support and arranging an interlock lever on one side of the auxiliary support portion, the contact supports of the contactor where the interlock member is located and the contact supports of the adjacent contactors do not need to be symmetrically arranged with the pivot portion as the center. The sizes of the first locking portion and the second locking portion are equal, the structure inside the contactor is more compact, meeting the miniaturization trend. At the same time, the distance between the contact supports of the two contactors is closer, the cooperation is more reliable, and it is not easy to get stuck.

[0030] In addition, on the basis of ensuring that the weights on both sides of the interlocking part at the pivot part are the same, enabling the first limiting part to extend to a farther distance can not only avoid the excessive length of the second limiting part, reduce the space it occupies in the contactor, meet the layout requirements of the third functional module, arrange the interlocking device adjacent to the auxiliary contact, and make the structure of the contactor more compact and smaller in volume. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the contactor of the present utility model;

[0032] Figure 2 is a schematic structural diagram of the contactor of the present utility model after hiding the face cover;

[0033] Figure 3 is an assembly schematic diagram of the cover of the contactor of the present utility model;

[0034] Figure 4 is a schematic diagram of the cooperation between the interlocking module of the present utility model and two contactors;

[0035] Figure 5 is the present utility model Figure 4 partial enlarged view;

[0036] Figure 6 is a schematic structural diagram of the interlocking part of the present utility model;

[0037] Figure 7 is the interlocking part when neither of the two contactors of the present utility model is actuated;

[0038] Figure 8 is the interlocking part when the left contactor of the present utility model is actuated;

[0039] Figure 9 is a schematic structural diagram of the contact support of the present utility model;

[0040] Figure 10 is a schematic diagram of the cooperation between the interlocking part of the present utility model and two contactors;

[0041] In the figure, there are a first functional module 1; a second functional module 2; a third functional module 3; a coil terminal 31; a face cover 32; an interlock module 33; an auxiliary contact module 34; a surge protection module 35; a base 21; a cover 22; a contact terminal 23; a static contact 24; a contact support 25; a coil connection structure 26; a first conductive part 261; a second conductive part 262; a coil wiring groove 210; a clamping spring piece 263; a contact part 264; a connection part 265; a coil connection piece 311; a coil pressing piece 312; a coil connection screw 313; an auxiliary support part 251; an auxiliary static contact 341; an auxiliary terminal 342; an auxiliary moving contact 343; an auxiliary support groove 252; an auxiliary spring platform 253; an auxiliary limiting surface 254; a sealing plug 321; an interlock piece 331; a pivoting part 332; a first locking part 333; a second locking part 334; a first limiting part 335; a second limiting part 336; a first limiting surface 3350; a second limiting surface 3360; a sliding part 255; an interlock rod 256; an external interlock groove 2560; an internal interlock groove 2510; a clamping plate 337; a rotating hole 338; an indicating mark 339. Specific embodiments

[0042] The following embodiments given in conjunction with the accompanying drawings further illustrate the specific embodiments of the contactor of the present invention. The contactor of the present invention is not limited to the descriptions of the following embodiments.

[0043] As Figures 1-3 shown, the contactor of this embodiment is divided into upper, middle, and lower three-layer structures according to the hierarchical structure. The main body structure has three layers, which are the first functional module 1, the second functional module 2, and the third functional module 3 arranged in the housing in sequence. The second functional module 2 is located between the first functional module 1 and the third functional module 3;

[0044] The first functional module 1 includes a base and a coil (not shown in the figure) of the electromagnetic system arranged in the base. The electromagnetic system includes a moving iron core and a coil for driving the moving iron core to move. Outside the base, there is an installation structure (not shown in the figure), and the installation structure is used to install the contactor in the working position. The installation structure can include rail installation and screw installation holes;

[0045] The third functional module 3 includes an auxiliary module and two coil terminals 31 for connecting the control circuit, and a face cover 32 for covering the auxiliary module and the two coil terminals 31. The auxiliary module includes one or any combination of the interlock module 33, the auxiliary contact module 34, and the surge protection module 35;

[0046] The second functional module 2 includes a base 21 installed on the first functional module 1 and a cover 22 sleeved outside the base 21. A contact system (not shown in the figure), an arc extinguishing system, and contact terminals 23 electrically connected to the contact system are provided in the base 21. The contact system includes at least one moving contact and two static contacts 24 respectively arranged at both ends of the moving contact. The moving contact is installed on a contact support 25 driven by an electromagnetic system. The contact support 25 drives the moving contact to contact and separate from the corresponding two static contacts 24 under the drive of the electromagnetic system, so that conduction or disconnection is achieved between the two static contacts 24 through the moving contact. One end of the static contact 24 far from the corresponding moving contact extends outside the base 21 and is connected to the contact terminal 23. The contact support 25 is slidably arranged in the second functional module 2. The moving iron core of the electromagnetic system is connected to the contact support 25 and drives the contact support 25 to move linearly up and down. The moving iron core is located at the connection between the third functional module 3 and the second functional module 2 and can be located inside the second functional module 2 or the third functional module 3. When the contact support 25 moves linearly, its bottom can move to the connection between the third functional module 3 and the second functional module 2 or move into the first functional module 1, and its top can move into the third functional module 3. The base of the first functional module 1, the base 21 of the second functional module 2, the cover 22 of the second functional module 2, and the face cover 32 of the third functional module 3 form the outer shell of the contactor.

[0047] As Figure 3 shown, an improvement point of this embodiment is that the second functional module 2 includes a coil terminal 31 for electrically connecting the third functional module 3 and a coil connection structure 26 for the coil. Both ends of the coil are respectively connected to the two coil terminals 31 through the coil connection structure 26 to access the control circuit. The control circuit drives the moving iron core to act by controlling the coil, so that the iron core drives the moving contact to contact and separate from the static contact 24, so as to respectively conduct and disconnect the working circuit accessed by the contact terminal 23.

[0048] In the contactor of this embodiment, by providing a coil connection structure 26 for electrically connecting the coil terminal 31 and the coil in the second functional module 2, the coil terminal 31 is integrated in the third functional module 3 at the top, which not only has a more reasonable layout, but also is more convenient for wiring and operation.

[0049] In addition, by providing an auxiliary module in the third functional module 3, the coil terminal 31 and the auxiliary module can be integrated together, which makes the wiring and operation of the third functional module 3 at the top more convenient, and the customer has better recognition when using it.

[0050] Further, the two coil terminals 31 are respectively located directly above the two wiring positions of the coil. Setting the coil terminal 31 in the third functional module 3 enables the coil terminal 31 to be located directly above the wiring position of the coil, which is convenient for wiring.

[0051] Furthermore, the coil connection structure 26 is located between the outer side of the base 21 and the inner side of the cover 22, and there is no need to set up an additional insulating structure for insulating the coil connection structure 26. Not only can the coil connection structure 26 be insulated from the contact system on the inner side of the base 21, but the cover 22 snapped on the base 21 can also cover the second conductive member, thereby insulating the coil connection structure 26. Of course, the coil connection structure 26 can also pass through the inside of the base 21, but an insulating structure needs to be added to the outer side of the coil connection structure 26. Preferably, the side surface of the base 21 is provided with a coil wiring groove 210, and the coil wiring groove 210 is used to accommodate the coil connection structure 26.

[0052] Further, the coil connection structure 26 includes two first conductive members 261 respectively connected to the two ends of the coil, and two second conductive members 262 respectively connected to the two coil connection terminals 31, and the two first conductive members 261 are respectively connected to the two second conductive members 262. Specifically, the first conductive member 261 includes a clamping spring 263, and the clamping spring 263 includes an elastic contact portion 264 and a connecting portion 265 located on the side of the contact portion 264, and the connecting portion 265 is used to connect the coil, and the second conductive member 262 is plug-connected with the clamping spring 263, which is easy to assemble;

[0053] The coil terminal 31 includes a coil connection piece 311, a coil wire pressing piece 312 and a coil connection screw 313. The coil connection screw 313 passes through the coil wire pressing piece 312 and is connected to the coil connection piece 311. The coil connection screw 313 is used to drive the coil wire pressing piece 312 to press the wire tightly onto the coil connection piece 311. The coil connection piece 311 and the corresponding second conductive member 262 are integrally formed, which can reduce the difficulty of assembly and save the process of connecting the second conductive member 262 to the coil terminal 31. Obviously, as other embodiments, the coil connection structure 26 can also adopt a non-plug-in structure, which belongs to the protection scope of the utility model.

[0054] like Figure 2As shown, the first functional module 1, the second functional module 2, and the third functional module 3 are arranged in sequence along the height direction of the contactor. In the length direction of the contactor, the length of the third functional module 3 is less than the length of the second functional module 2, such that screw holes corresponding to the contact terminal 23 are respectively provided at both ends of the top surface of the second functional module 2 in the length direction of the contactor. The third functional module 3 is provided with an interlock module 33, and the interlock module 33 is spaced from the two coil terminals 31. In the width direction of the contactor, the interlock module 33 and the two coil terminals 31 are oppositely arranged on both sides of the third functional module 3. Two auxiliary contact modules 34 are provided between the interlock module 33 and the two coil terminals 31, and a surge protection module 35 is provided between the two coil terminals 31.

[0055] For the contactor of this embodiment, on the basis of realizing modularization of functional areas through the first functional module 1, the second functional module 2, and the third functional module 3, the third functional module 3 is further divided into areas according to the functions of different auxiliary modules, so that a variety of auxiliary modules can be built into the third functional module 3. In addition, the auxiliary contact modules 34 are arranged on the sides of the two coil terminals 31, which is convenient for the installation and connection in series of the externally connected series resistance module. It can be understood that only one of the auxiliary modules can be provided, or a combination of multiple auxiliary modules can be provided, and both belong to the protection scope of the present invention.

[0056] Furthermore, as Figure 2 、 9 shown, the contact support 25 is provided with an auxiliary support portion 251 inserted into the third functional module 3. The auxiliary contact module 34 includes two auxiliary static contacts 341 arranged at intervals, and auxiliary connection terminals 342 respectively arranged on the auxiliary static contacts 341. The auxiliary support portion 251 is inserted between the two auxiliary static contacts 341 of the auxiliary contact module 34. An auxiliary moving contact 343 for electrically connecting with the two auxiliary static contacts 341 is provided on the auxiliary support portion 251. When the contact support 25 drives the moving contact to contact and separate from the static contact 24, it can simultaneously drive the auxiliary moving contact 343 to move to contact and separate from the auxiliary static contact 341, so as to switch the output state of the auxiliary contact module 34.

[0057] Further, an auxiliary support groove 252 is provided on the auxiliary support portion 251. On two opposite groove walls of the auxiliary support groove 252, there are respectively provided an auxiliary spring platform 253 (auxiliary contact spring not shown in the figure) for fixing the auxiliary contact spring, and an auxiliary limiting surface 254 for limiting the auxiliary moving contact 343. The auxiliary contact spring is used to push the middle part of the auxiliary moving contact 343, so that the middle part of the auxiliary moving contact 343 is limited by the auxiliary limiting surface 254. Both ends of the auxiliary moving contact 343 extend to both sides of the auxiliary support portion 251. When the auxiliary moving contact 343 contacts the auxiliary static contact 341, the auxiliary contact spring is compressed and pushes the auxiliary moving contact 343, so that the auxiliary moving contact 343 is pressed against the auxiliary static contact 341.

[0058] The contactor of this embodiment has two auxiliary contact modules 34, and the two auxiliary contact modules 34 are respectively normally open contacts and normally closed contacts. On the auxiliary support portion 251, there are provided two auxiliary support grooves 252 corresponding to the two auxiliary contact modules 34 respectively. Auxiliary moving contacts 343 are respectively provided in the two auxiliary support grooves 252. The two auxiliary support grooves 252 are located at different heights, so that the two auxiliary moving contacts 343 are located at different heights. One of the auxiliary moving contacts 343 contacts the corresponding auxiliary static contact 341 to form a normally closed contact, and the other auxiliary moving contact 343 is separated from the corresponding auxiliary static contact 341 to form a normally open contact. When the auxiliary moving contact 343 of the normally open auxiliary contact contacts the corresponding auxiliary static contact 341, the auxiliary moving contact 343 of the normally closed auxiliary contact is separated from the corresponding auxiliary static contact 341.

[0059] In this way, it is possible to avoid setting the two types of auxiliary contacts, namely normally open contacts and normally closed contacts, at different heights. Then, it is possible to set both normally open and normally closed auxiliary contacts in the third functional module 3 at the same time, which can effectively reduce the height of the third functional module 3. This not only makes the structure of the auxiliary contacts more compact, but also enables the height of the third functional module 3 to meet the dimensional requirements after being combined with the first functional module 1 and the second functional module 2. Of course, it can also be achieved by other means. For example, setting the two auxiliary contact modules 34 at different heights will increase the height of the third functional module 3, which all fall within the protection scope of the present invention. In addition, both of the two auxiliary contact modules 34 can be normally open contacts or both can be normally closed contacts; the contactor can also be provided with one or more auxiliary contact modules 34.

[0060] As Figure 3 shown, the cover 22 is snap-fitted onto the base 21 along the first direction, and the face cover 32 is snap-fitted onto the cover 22 along the second direction, or snap-fitted onto the structure of the base 21 that extends outside the cover 22. The first direction and the second direction are perpendicularly arranged, which is not only convenient for assembly, but also the face cover 32 can play a role in limiting the cover 22.

[0061] Further, the face cover 32 is of an integral structure or a split structure. The split face cover 32 is provided with a sealing hole corresponding to the surge protection module 35 and a detachable sealing plug 321 for plugging into the sealing hole, which facilitates the installation and disassembly of the electronic circuit board of the surge protection module 35.

[0062] Further, as Figures 4-6 shown, an improvement point of this embodiment lies in that the interlock module 33 includes a bracket and an interlock member 331 rotatably disposed on the bracket. The bracket is fixedly disposed inside the housing of the contactor. In this embodiment, the bracket is located in the third functional module 3 at the top of the contactor. The interlock member 331 includes a pivot portion 332 rotatably connected to the bracket, and a first locking portion 333 and a second locking portion 334 oppositely disposed on both sides of the pivot portion 332. The first locking portion 333 extends outside the contactor for inserting into an adjacent contactor and cooperating with the contact support 25 of the adjacent contactor. The second locking portion 334 cooperates with the contact support 25 of the contactor where it is located, so that when one of the contactors and an adjacent contactor is closed, the contact support 25 of the other contactor is locked by the interlock member 331, making it impossible for the locked contactor to be closed as well, preventing the two contactors from being closed simultaneously and realizing the interlock of the two contactors.

[0063] The side wall of the housing of the contactor in contact with the adjacent contactor is provided with an interlock mounting hole. The bracket is provided with a rotation hole 338. One side of the rotation hole 338 facing the interlock mounting hole is provided with an opening communicating with the rotation hole 338, so that the interlock member 331 installs the pivot portion 332 into the rotation hole 338 of the bracket through the opening via the interlock mounting hole. The interlock member 331 further protrudes with a first limiting portion 335 on the side facing the interlock mounting hole for limiting with the adjacent contactor to prevent the interlock member 331 from falling off.

[0064] The interlock module of the contactor in this embodiment includes a bracket and an interlock member 331 rotatably disposed on the bracket. The bracket of the interlock module 33 is fixedly disposed inside one of the contactors. The interlock member 331 is installed on the bracket of one of the contactors. The pivot portion 332 of the interlock member 331 is located inside one of the contactors as the rotation center, rather than symmetrically located between the two contactors, so that a complex installation structure does not need to be set up when the interlock module 33 is used, and only one interlock member 331 needs to be installed; and when assembling the interlock member 331, the interlock member 331 is inserted into the contactor through the interlock mounting hole on the side wall of the contactor, and the pivot portion 332 of the interlock member 331 is installed into the rotation hole 338 of the bracket through the opening, and the first limiting portion 335 prevents the interlock member 331 from falling off from the opening. The overall installation is convenient and the interlock module is hidden inside the contactor housing, and the face cover 32 of the contactor does not need to be opened during assembly, and the assembly efficiency is high.

[0065] Preferably, the interlock module 33 is arranged in the third functional module 3 on the top of the contactor, which is convenient for installation and disassembly. Of course, as other embodiments, the interlock module 33 may not be arranged in the third functional module 3, for example, it may also be arranged in the second functional module 2.

[0066] As Figure 10 As shown, an auxiliary support portion 251 is provided in the center of the contact support 25. An interlock lever 256 is provided on one side of the auxiliary support portion 251 at an interval from the auxiliary support portion 251. The second locking portion 334 and the first locking portion 333 on the interlock member 331 are respectively used to be inserted into the auxiliary support portion 251 and the interlock lever 256 of the adjacent contactor, so as to realize the interlock between the contactor and the adjacent contactor, and prevent the contactor and the adjacent contactor from closing simultaneously. Preferably, the distances from the pivot portion 332 on the interlock member 331 to the auxiliary support portion 251 and the adjacent interlock lever 256 are equal, and the sizes of the first locking portion 333 and the second locking portion 334 are equal, which is convenient for realizing the interlock. The contact supports 25 of the contactor where the interlock member 331 is located and the contact supports 25 of the adjacent contactor are not symmetrically arranged with the pivot portion 332 as the center.

[0067] For the two contactors interlocked in this embodiment, by providing the auxiliary support portion 251 in the center of the contact support 25 and arranging the interlock lever 256 on one side of the auxiliary support portion 251, the contact supports 25 of the contactor where the interlock member 331 is located and the contact supports 25 of the adjacent contactor do not need to be symmetrically arranged with the pivot portion 332 as the center, the sizes of the first locking portion 333 and the second locking portion 334 are equal, the internal structure of the contactor is more compact, meeting the miniaturization trend. At the same time, the distances between the contact supports 25 of the two contactors are closer, the cooperation is more reliable, and it is not easy to jam.

[0068] As Figures 6-8 As shown, particularly, the interlock member 331 is further provided with a second limiting portion 336. The first limiting portion 335 and the second limiting portion 336 are respectively arranged on both sides of the pivot portion 332, and the second limiting portion 336 plays a role in balancing with the first limiting portion 335. In this embodiment, the sizes of the first limiting portion 335 and the second limiting portion 336 are different, the sum of the weights of the first limiting portion 335 and the first locking portion 333 is equal to the sum of the weights of the second limiting portion 336 and the second locking portion 334. The first limiting surface 3350 and the second limiting surface 3360 are respectively provided on the side surfaces of the first limiting portion 335 and the second limiting portion 336 far from the pivot portion 332, and the distance from the first limiting surface 3350 to the pivot portion 332 is greater than the distance from the second limiting surface 3360 to the pivot portion 332.

[0069] Further, the first limiting surface 3350 and the second limiting surface 3360 are respectively in the shape of an arc surface. The first limiting surface 3350 is disposed opposite to the face cover 32 of the housing of the adjacent contactor, and there is a gap between the first limiting surface 3350 and the housing of the adjacent contactor, so that the first limiting surface 3350 does not contact the housing of the adjacent contactor when the interlocking member 331 rotates. The gap is smaller than the diameter of the pivot portion 332. When the interlocking member 331 falls off, the housing of the adjacent contactor is used to block the first limiting surface 3350 to prevent the interlocking member 331 from falling off;

[0070] A cover 22 is provided outside the contact support 25 of the contactor. The second limiting surface 3360 is disposed opposite to the cover 22 of the contactor where the interlocking member 331 is located, and there is a gap between the second limiting surface 3360 and the cover 22, so that the second limiting surface 3360 does not contact the cover 22 when the interlocking member 331 rotates.

[0071] Further, the interlocking member 331 is a uniform integral structure, and the densities of the first limiting portion 335, the first locking portion 333, the second limiting portion 336, and the second locking portion 334 of the interlocking member 331 are the same. The weight comparison relationships among the first limiting portion 335, the first locking portion 333, the second limiting portion 336, and the second locking portion 334 simultaneously satisfy the volume comparison relationships. For example, when the weight of the first locking portion 333 is greater than the weight of the second locking portion 334, the volume of the first locking portion 333 is greater than the volume of the second locking portion 334. When the weight of the first locking portion 333 is less than the weight of the second locking portion 334, the volume of the first locking portion 333 is less than the volume of the second locking portion 334.

[0072] In the contactor of this embodiment, on the basis of ensuring that the weights on both sides of the pivot portion 332 of the interlocking member 331 are the same, the first limiting portion 335 can extend to a farther distance, which can not only avoid the excessive length of the second limiting portion, reduce the space occupied by it in the contactor, meet the layout requirements of the third functional module 3, make the interlocking device adjacent to the auxiliary contact, and make the contactor structure more compact and smaller in volume.

[0073] As a first embodiment, the first locking portion 333 and the second locking portion 334 have the same size and weight, the first limiting portion 335 and the second limiting portion 336 have the same weight, the longitudinal cross-sections of the first limiting portion 335 and the second limiting portion 336 are both rectangular, the length of the first limiting portion 335 is greater than the length of the second limiting portion 336, and the width of the first limiting portion 335 is less than the width of the second limiting portion 336. Of course, the first limiting portion 335 and the second limiting portion 336 can also adopt other shapes, and different shapes can also be adopted between the first limiting portion 335 and the second limiting portion 336.

[0074] As a second embodiment, the weights of the first limiting portion 335 and the second limiting portion 336 are different. When the weight of the first limiting portion 335 is greater than the weight of the second limiting portion 336, the weight of the first locking portion 333 is less than the weight of the second locking portion 334; or, when the weight of the first limiting portion 335 is less than the weight of the second limiting portion 336, the weight of the first locking portion 333 is greater than the weight of the second locking portion 334, so that the sum of the weights of the first limiting portion 335 and the first locking portion 333 is equal to the sum of the weights of the second limiting portion 336 and the second locking portion 334.

[0075] like Figure 9 As shown, the contact support 25 includes a sliding portion 255 slidably arranged in the base 21, the auxiliary support portion 251 is arranged in the center above the sliding portion 255, the interlocking rod 256 and the interlocking member 331 are relatively arranged on both sides of the auxiliary support portion 251, the interlocking rod 256 is provided with an external interlocking groove 2560 that cooperates with the first locking portion 333 of the interlocking member 331 of the adjacent contactor, and the auxiliary support portion 251 is provided with an internal interlocking groove 2510 that cooperates with the second locking portion 334 of the interlocking member 331 of the contactor on which it is located on the side away from the interlocking rod 256.

[0076] Furthermore, the bracket is integrally formed with the base 21, and the bracket includes two clamping plates 337 arranged opposite to each other, and the two clamping plates 337 are respectively provided with C-shaped rotating holes 338, and one side of the rotating hole 338 is provided with an opening for inserting the pivot shaft, and the pivot shaft is provided with an indication mark 339 opposite to the opening, and the indication mark 339 is used to indicate the installation direction to prevent the first limit part 335 and the second limit part 336 on both sides of the pivot shaft from being installed upside down.

[0077] like Figures 7-8 The action process shown:

[0078] In the power-off state, both contactors are in a non-working state, the first locking portion 333 and a portion of the second locking portion 334 on the interlocking member 331 are respectively located in the outer interlocking slot 2560 and the inner interlocking slot 2510 of the two contactors, and the pivoting portion 332 is located at the center of the two contactors;

[0079] In the power-on state, one of the contactors is in motion, such as the contact support 25 of the left contactor moves downward, moves to a certain position and contacts the top of the first locking portion 333 of the interlocking member 331, and continues to move and pushes the first locking portion 333 after contact, so that the interlocking member 331 swings to the right. After the interlocking member 331 swings at an angle α, the first locking portion 333 leaves the outer interlocking groove 2560, and the second locking portion 334 is inserted into the inner interlocking groove 2510 of the contact support 25 of the contactor, and presses against the top side groove wall of the inner interlocking groove 2510 to lock the contact support 25.

[0080] The contact support 25 of the left contactor continues to move downward, and at the same time, the first locking portion 333 is in sliding fit with the side surface of the contact support 25.

[0081] At this time, when the right contactor is energized or the contact support 25 is mechanically pressed, the contact support 25 cannot move downward because it is locked by the interlocking member 331; conversely, the operating principle is the same, realizing the mechanical interlock of the two contactors.

[0082] At the same time, during the swinging process of the interlocking member 331, since the pivoting portion 332 of the interlocking member 331 is limited by the bracket and restricted by the left and right first limiting portions 335 and the second limiting portion 336, the pivoting portion 332 can only swing in a left - right circular motion in the pivoting hole of the bracket, thus ensuring the reliability of the mechanical interlock conversion of the two contactors.

[0083] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in the usual placement during use. It is only for the convenience of description and does not indicate that the indicated device or element must have a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0084] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or replacements can still be made, which should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. A contactor, comprising a contact system and an electromagnetic system. The contact system includes a stationary contact (24), a moving contact, and a contact support (25). The moving contact is arranged on the contact support (25). The electromagnetic system includes a moving iron core and a coil for driving the movement of the moving iron core. The moving iron core is connected to the contact support (25) to drive the movement of the contact support (25), so that the moving contact contacts and separates from the stationary contact (24). It is characterized in that: It further includes an interlock module (33). The interlock module (33) includes a bracket and an interlock member (331) rotatably arranged on the bracket. The bracket is fixedly arranged in the housing of the contactor. The interlock member (331) includes a pivot part (332) rotatably connected to the bracket, and a first locking part (333) and a second locking part (334) oppositely arranged on both sides of the pivot part (332). The second locking part (334) and the first locking part (333) on the interlock member (331) are respectively used to limit the contact support (25) and the contact support of an adjacent contactor. When one of the contactors and an adjacent contactor is closed, the interlock member (331) locks the contact support (25) of the other contactor, making it impossible for the locked contactor to be closed; The housing of the contactor is provided with an interlock installation hole on the side wall in contact with the adjacent contactor. The bracket is provided with a rotation hole (338). One side of the rotation hole (338) facing the interlock installation hole is provided with an opening communicating with the rotation hole (338), so that the interlock member (331) is installed through the interlock installation hole and its pivot part (332) is installed on the rotation hole (338) of the bracket through the opening. The interlock member (331) further protrudes with a first limit part (335) on the side facing the interlock installation hole, which is used to limit the adjacent contactor to prevent the interlock member (331) from falling off.

2. The contactor according to claim 1, characterized in that: The interlock member (331) is further provided with a second limit part (336). The first limit part (335) and the second limit part (336) are respectively arranged on both sides of the pivot part (332).

3. The contactor according to claim 2, characterized in that : The first limit part (335) and the second limit part (336) are respectively provided with a first limit surface (3350) and a second limit surface (3360) on the side far from the pivot part (332). The distance from the first limit surface (3350) to the pivot part (332) is greater than the distance from the second limit surface (3360) to the pivot part (332).

4. The contactor according to claim 3, characterized in that : The sizes of the first limit part (335) and the second limit part (336) are different. The sum of the weights of the first limit part (335) and the first locking part (333) is equal to the sum of the weights of the second limit part (336) and the second locking part (334).

5. The contactor according to claim 2, wherein: The first limiting portion (335) is provided with a first limiting surface (3350) on the side away from the pivoting portion (332). The first limiting surface (3350) is disposed opposite to the housing of the adjacent contactor, and a gap is provided between the first limiting surface (3350) and the housing of the adjacent contactor. The first limiting surface (3350) does not contact the housing of the adjacent contactor when the interlocking member (331) rotates. The gap is smaller than the diameter of the pivoting portion (332) to prevent the interlocking member (331) from falling off.

6. The contactor according to claim 3, characterized in that: A cover (22) is provided outside the contact support (25). The second limiting surface (3360) is disposed opposite to the cover (22) of the contactor where the interlocking member (331) is located, and a gap is provided between the second limiting surface (3360) and the cover (22). The second limiting surface (3360) does not contact the cover (22) when the interlocking member (331) rotates.

7. The contactor according to claim 4, characterized in that: The first locking portion (333) and the second locking portion (334) have the same size and weight. The first limiting portion (335) and the second limiting portion (336) have the same weight. The length of the first limiting portion (335) is greater than the length of the second limiting portion (336), and the width of the first limiting portion (335) is smaller than the width of the second limiting portion (336).

8. The contactor according to claim 1, characterized in that: An auxiliary support portion (251) is provided in the center of the contact support (25). An interlocking rod (256) spaced from the auxiliary support portion (251) is provided on one side of the auxiliary support portion (251). The second locking portion (334) and the first locking portion (333) on the interlocking member (331) are respectively inserted into the auxiliary support portion (251) and the interlocking rod (256) of the adjacent contactor to realize the interlocking of the contactor and the adjacent contactor.

9. The contactor according to claim 8, wherein: The distances from the pivoting portion (332) on the interlocking member (331) to the auxiliary support portion (251) and the interlocking rod (256) of the adjacent contactor are equal. The auxiliary support portion (251) of the contactor where the interlocking member (331) is located and the auxiliary support portion (251) of the adjacent contactor are not symmetrically arranged with the pivoting portion (332) as the center.

10. The contactor according to claim 8, wherein: The contact support (25) includes a sliding portion (255) arranged in a sliding manner. The auxiliary support portion (251) is provided in the center above the sliding portion (255). The interlocking rod (256) and the interlocking member (331) are relatively arranged on both sides of the auxiliary support portion (251). The sliding portions (255) of the contactor where the interlocking member (331) is located and the adjacent contactor are not symmetrically arranged with the pivoting portion (332) as the center. An external interlocking groove (2560) for cooperating with the first locking portion (333) of the interlocking member (331) of the adjacent contactor is provided on the interlocking rod (256). An internal interlocking groove (2510) for cooperating with the second locking portion (334) of the interlocking member (331) of the contactor where it is located is provided on the side of the auxiliary support portion (251) away from the interlocking rod (256).

11. The contactor according to claim 1, characterized in that: The bracket includes two clamping plates (337) arranged oppositely. Rotation holes (338) are respectively provided on the two clamping plates (337). An opening for inserting a pivot part (332) is provided on one side of the pivot groove (338).

12. The contactor according to claim 1, wherein: The pivot part (332) is provided with an indication mark (339) opposite to the opening.

13. The contactor according to claim 1, wherein: It includes a first functional module (1), a second functional module (2) and a third functional module (3). The second functional module (2) is arranged between the first functional module (1) and the third functional module (3). The first functional module (1) is provided with an electromagnetic system. The electromagnetic system includes a moving iron core and a coil for driving the movement of the moving iron core. The third functional module (3) is provided with the interlock module (33), and two coil connection terminals (31) for connecting a control circuit. The second functional module (2) includes a contact system and contact connection terminals (23) for connecting a working circuit. The contact system includes a static contact (24) and a moving contact driven by the electromagnetic system. The static contact (24) is connected to the working circuit through the contact connection terminals (23). The second functional module (2) further includes a coil connection structure (26) for electrically connecting the coil connection terminals (31) and the coil. Both ends of the coil are respectively connected to the two coil connection terminals (31) through the coil connection structure (26) and are connected to the control circuit. The control circuit controls the coil to drive the moving iron core to act, so that the iron core drives the moving contact to contact and separate from the static contact (24), so as to conduct and disconnect the working circuit connected to the contact connection terminals (23) respectively.

14. The contactor according to claim 13, wherein: The interlock module (33) is arranged at intervals with the two coil connection terminals (31), and the interlock module (33) and the two coil connection terminals (31) are oppositely arranged on both sides of the third functional module (3). Two auxiliary contact modules (34) are arranged between the interlock module (33) and the two coil connection terminals (31). A surge protection module (35) is arranged between the two coil connection terminals (31).

15. The contactor according to claim 14, wherein: The contact support (25) is provided with an auxiliary support part (251) inserted into the third functional module (3). The auxiliary contact module (34) includes two auxiliary static contacts (341) arranged at intervals, and auxiliary connection terminals (342) respectively arranged on the auxiliary static contacts (341). The auxiliary support part (251) is used to be inserted between the two auxiliary static contacts (341) of the auxiliary contact module (34). An auxiliary moving contact (343) for electrically connecting with the two auxiliary static contacts (341) is provided on the auxiliary support part (251). When the contact support (25) drives the moving contact to contact and separate from the static contact (24), it can drive the auxiliary moving contact (343) to move and contact and separate from the auxiliary static contact (341) at the same time, so that the auxiliary contact module (34) switches the output state.

16. The contactor according to claim 15, characterized in that: An auxiliary support groove (252) is provided on the auxiliary support part (251). Auxiliary spring platforms (253) for fixing the auxiliary contact spring and auxiliary limiting surfaces (254) for limiting the auxiliary moving contact (343) are respectively provided on two opposite groove walls of the auxiliary support groove (252). The auxiliary contact spring is used to push the middle part of the auxiliary moving contact (343) so that the middle part of the auxiliary moving contact (343) is limited by the auxiliary limiting surface (254). Both ends of the auxiliary moving contact (343) respectively extend to both sides of the auxiliary support part (251). When the auxiliary moving contact (343) contacts the auxiliary static contact (341), the auxiliary contact spring is compressed and pushes the auxiliary moving contact (343) so that the auxiliary moving contact (343) is pressed against the auxiliary static contact (341).

17. The contactor according to claim 14, wherein: The second functional module (2) includes a base (21) and a cover (22) sleeved outside the base (21). The third functional module (3) includes a face cover (32). The cover (22) is snap-fitted onto the base (21) along a first direction. The face cover (32) is snap-fitted onto the cover (22) along a second direction, or is snap-fitted onto a structure of the base (21) that extends outside the cover (22). The first direction and the second direction are perpendicularly arranged. The bracket is integrally formed with the base (21).

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