Contactor

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a contactor. The contactor provided by the utility model comprises the electromagnetic system, the contact system and the side cover, and optimizes the assembly structure of the electromagnetic unit and the side cover, so that the electromagnetic unit is arranged at the end part of the opening, the end part of the base is flush with the outer surface of the side cover, and the electromagnetic unit and the side cover do not protrude out of the end part of the base, so that no extra space is occupied; the overall width of the contactor is the same as the width of the contact system, so that the size of the whole contactor in the width direction is reduced, the occupied space of an electrical cabinet is further reduced, and the requirements of installation and wiring are met.

Description

Technical Field

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

[0002] A contactor is a low-voltage electrical device that can connect, carry, and disconnect current under normal circuit conditions (including overload operation). It is widely used in industrial equipment automation control. The contactor controls the connection and disconnection of the moving and static contacts by controlling the connection and disconnection of the electromagnetic system.

[0003] As the voltage and current carried by contactor products gradually increase, the product size also increases, and a large space is occupied in the electrical cabinet. However, the space when the contactor and other electrical components are used in the electrical cabinet is limited, and the relatively large contactor cannot meet the requirements of installation and wiring. Therefore, it is urgently necessary to provide a method for increasing the carrying capacity of the contactor while reducing the external dimensions of the contactor to save the space occupied by the electrical cabinet and meet the requirements of installation and wiring. Utility Model Content

[0004] The purpose of the utility model is to provide a contactor, which reduces the size of the contactor to save the space occupied by the electrical cabinet and meet the requirements of installation and wiring.

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

[0006] A contactor, comprising:

[0007] An electromagnetic system, comprising a base and at least one electromagnetic unit disposed in the base, wherein the base is open at at least one end along a first direction, and one end of one of the electromagnetic units is disposed at the corresponding opening;

[0008] A contact system, comprising a plurality of bases, wherein the plurality of bases are sequentially arranged on the base along a first direction;

[0009] A side cover is provided, wherein at least one side cover is fixedly connected to an end portion of the base having an opening, and an outer surface of the side cover is flush with an end portion of the electromagnetic unit and an end portion of the base disposed at the opening.

[0010] As an optional technical solution for the above-mentioned contactor, the base has an open end face with an avoidance notch, one end of the electromagnetic unit protrudes from the end face of the base, and the side cover is provided with an avoidance opening for the electromagnetic unit to pass through and a plug-in groove for plugging into the end face of the base.

[0011] As an optional technical solution of the above-mentioned contactor, the electromagnetic system also includes a circuit board and a surge element, the side cover is provided with a receiving groove, the circuit board is arranged in the receiving groove, the surge element is arranged on the electromagnetic unit, and the circuit board is electrically connected to the surge element and the electromagnetic unit respectively.

[0012] As an optional technical solution of the above-mentioned contactor, the electromagnetic system also includes at least one wiring unit, which is arranged on the circuit board, and the wiring unit includes a first wiring terminal and a second wiring terminal, the first wiring terminal and the second wiring terminal are electrically connected to the circuit board respectively, the first wiring terminal and the second wiring terminal are used to electrically connect to an external power line, and the first wiring terminal and the second wiring terminal are placed on the same side of the base.

[0013] As an optional technical solution for the above-mentioned contactor, the contact system also includes a support member and a plurality of contact supports, wherein the plurality of contact supports are arranged on the support member, the support member is slidably connected to the base along a second direction, and both ends of the support member are rotatably connected to connecting rods, the two connecting rods extend in the same direction, and the connecting rods are rotatably connected to the base, and the contact supports are passed through the corresponding bases and are slidably connected to the bases.

[0014] As an optional technical solution for the above-mentioned contactor, a connecting hole is provided on the end face of the base, a rotating connecting member is rotatably provided in the connecting hole, the rotating connecting member has a first connecting hole with a polygonal hole wall, a second connecting hole with a polygonal hole wall is provided on the connecting rod, a connecting shaft with a polygonal cross-section is inserted in the first connecting hole, and the end of the connecting shaft opposite to the first connecting hole is inserted in the second connecting hole.

[0015] As an optional technical solution for the above-mentioned contactor, a mounting groove is provided on one side of the support member along a first direction, and the end parts of the two side walls opposite to each other of the mounting groove are bent toward each other, and the two side walls opposite to each other of the contact support are respectively provided with sliding grooves, one end of the contact support is placed in the mounting groove, and the other end of the contact support passes through the mounting groove, and the end parts of the two side walls opposite to each other of the mounting groove are inserted into the sliding groove.

[0016] As an optional technical solution of the above-mentioned contactor, each contact support is respectively provided with at least two moving contacts, and at least two of the moving contacts are connected in parallel.

[0017] As an optional technical solution of the above-mentioned contactor, at least one armature is provided on the other side of the support member, the electromagnetic unit includes an iron core, and the armature is arranged corresponding to the iron core.

[0018] As an optional technical solution of the contactor, at least two electromagnetic units are provided, both ends of the base along the first direction are opened, and each opening corresponds to one electromagnetic unit and one side cover.

[0019] Beneficial effects of the utility model:

[0020] The contactor provided by the utility model optimizes the assembly structure of the electromagnetic unit and the side cover, so that the end of the electromagnetic unit at the opening, the end of the base and the outer surface of the side cover are arranged flush, the electromagnetic unit and the side cover are not protruding from the end of the base, and do not occupy additional space. The overall width of the contactor is the same as the width of the contact system, so that the size of the entire contactor in the width direction is reduced, thereby reducing the space occupied by the electrical cabinet and meeting the requirements of installation and wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial structural schematic diagram of a contactor provided in an embodiment of the utility model;

[0022] Figure 2 It is a partial structural exploded diagram of the contactor provided in the embodiment of the utility model;

[0023] Figure 3 It is an axonometric diagram of the contact support and electromagnetic unit structure provided by the embodiment of the utility model;

[0024] Figure 4 It is a side view of the contact support and electromagnetic unit structure provided by an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the connection between the support member and the base provided in the embodiment of the utility model;

[0026] Figure 6 It is an axonometric diagram of the contact support and support member structure provided by the embodiment of the utility model;

[0027] Figure 7 It is a side view of the contact support and the support member provided in the embodiment of the utility model.

[0028] In the figure:

[0029] 1. Electromagnetic system; 2. Contact system; 3. Side cover;

[0030] 11. base; 111. avoidance gap; 12. electromagnetic unit; 13. circuit board; 14. wiring unit; 141. first wiring terminal; 142. second wiring terminal; 15. connecting shaft; 16. armature;

[0031] 21. base; 22. support member; 221. mounting groove; 23. contact support; 231. slide groove; 24. connecting rod; 25. moving contact; 26. stationary contact assembly;

[0032] 31. Avoidance; 32. Plug-in slot; 33. Accommodation slot;

[0033] a. First direction; b. Second direction. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] like Figure 1As shown, this embodiment provides a contactor, which includes an electromagnetic system 1, a contact system 2 and a side cover 3. The electromagnetic system 1 includes a base 11 and at least one electromagnetic unit 12 arranged in the base 11, and the base 11 is opened at at least one end along the first direction a, and one end of one electromagnetic unit 12 is placed at the corresponding opening. The contact system 2 includes a plurality of bases 21, and the plurality of bases 21 are sequentially arranged on the base 11 along the first direction a. At least one side cover 3 is provided, and the side cover 3 is fixedly connected to the end of the base 11 having an opening, and the outer surface of the side cover 3 is arranged flush with the end of the electromagnetic unit 12 and the end of the base 21 placed at the opening. The contactor provided in this embodiment optimizes the assembly structure of the electromagnetic unit 12 and the side cover 3, so that the end of the electromagnetic unit 12 placed at the opening, the end of the base 21 and the outer surface of the side cover 3 are arranged flush, and the electromagnetic unit 12 and the side cover 3 are not arranged to protrude from the end of the base 21, and do not occupy additional space. The overall width of the contactor is the same as the width of the contact system 2, so that the size of the entire contactor in the width direction is reduced, and the width direction is the first direction a, thereby reducing the space occupied by the electrical cabinet and meeting the requirements of installation and wiring.

[0038] like Figure 1 and Figure 2 As shown, the base 11 has an open end face with an avoidance notch 111, one end of the electromagnetic unit 12 protrudes from the end face of the base 11, and the side cover 3 is provided with an avoidance opening 31 for the electromagnetic unit 12 to pass through and a plug-in slot 32 plugged with the end face of the base 11. When the side cover 3 is installed on the base 11, the end face of the base 11 is plugged into the plug-in slot 32 of the side cover 3 to fix the side cover 3 on the base 11. The end face of the base 11 is provided with an avoidance notch 111, so that one end of the electromagnetic unit 12 protrudes from the end face of the base 11. After the side cover 3 is installed on the base 11, the outer surface of the side cover 3 is flush with the end of the electromagnetic unit 12, and the side cover 3 does not protrude from the electromagnetic unit 12.

[0039] The side cover 3 is also connected to the base 11 by bolts to prevent the side cover 3 from falling off, thereby improving the stability of the connection between the side cover 3 and the base 11.

[0040] The electromagnetic system 1 also includes a circuit board 13 and a surge element (the surge element is not shown in the figure). The side cover 3 is provided with a receiving groove 33, and the circuit board 13 is placed in the receiving groove 33 to fix the circuit board 13. The surge element is arranged on the electromagnetic unit 12 to realize the functional integration of the electromagnetic unit 12, so that the internal circuit of the electromagnetic unit 12 is integrated with the surge suppression function. The circuit board 13 is electrically connected to the surge element and the electromagnetic unit 12 respectively. The specific connection circuit is the existing technology and will not be described in detail here.

[0041] Optionally, a surge element is integrated on each electromagnetic unit 12 to better protect the electromagnetic unit 12 .

[0042] The electromagnetic system 1 also includes at least one wiring unit 14, which is arranged on the circuit board 13 to reduce the number of wires, facilitate the assembly of the contactor, and is not easy to connect the wires incorrectly. Each wiring unit 14 includes a first wiring terminal 141 and a second wiring terminal 142, respectively, and the first wiring terminal 141 and the second wiring terminal 142 are electrically connected to the circuit board 13, specifically, the first wiring terminal 141 and the second wiring terminal 142 are electrically connected to the circuit board 13 through the copper film wire of the circuit board 13. The first wiring terminal 141 and the second wiring terminal 142 are used to be electrically connected to an external power line to power the electromagnetic unit 12. The first wiring terminal 141 and the second wiring terminal 142 are placed on the same side of the base 11 to avoid crossing the entire contactor when wiring, and to facilitate wiring to the first wiring terminal 141 and the second wiring terminal 142.

[0043] In some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, at least two electromagnetic units 12 are provided, and both ends of the base 11 along the first direction a are opened, and each opening corresponds to an electromagnetic unit 12 and a side cover 3. The outer surfaces of the two side covers 3 are flush with the ends of the electromagnetic units 12 on the corresponding sides and the ends of the base 21. Each side cover 3 is provided with a receiving groove 33, and each receiving groove 33 is provided with a circuit board 13, and each circuit board 13 is provided with a wiring unit 14, which can selectively connect an external power line on both sides to meet the wiring requirements of different positions.

[0044] In some embodiments, Figure 5 As shown, the contact system 2 also includes a support member 22 and a plurality of contact supports 23, and the contact supports 23 are arranged one by one with the base 21. The plurality of contact supports 23 are arranged on the support member 22, and the support member 22 is slidably connected with the base 11 along the second direction b, and the contact supports 23 penetrate the corresponding base 21 and are slidably connected with the base 21. The plurality of contact supports 23 are integrated on a support member 22, which is convenient for assembly, and the support member 22 can slide relative to the base 11, and the contact supports 23 are slidably connected with the corresponding base 21, and the plurality of contact supports 23 can realize synchronous action, thereby improving the performance of the contactor disconnection. The support member 22 is arranged in the base 11, and can slide in the second direction b in the base 11.

[0045] Both ends of the support member 22 are rotatably connected with connecting rods 24, the two connecting rods 24 extend in the same direction, and the connecting rods 24 are rotatably connected to the base 11. The two connecting rods 24, the support member 22 and the side walls of the base 11 form a parallelogram fixed structure to avoid shaking when the support member 22 slides along the second direction b, so that the support member 22 can stably slide along the second direction b, ensuring the synchronization of the actions of multiple contact supports 23.

[0046] Optionally, a connecting hole is provided on the end face of the base 11, and a rotating connecting member is provided in the connecting hole. The rotating connecting member has a polygonal first connecting hole, and a polygonal second connecting hole is provided on the connecting rod 24. A connecting shaft 15 with a polygonal cross-section is inserted into the first connecting hole, and the end of the connecting shaft 15 opposite to the first connecting hole is inserted into the second connecting hole. The provision of this connecting structure can prevent the connecting shaft 15 from rotating and causing the support member 22 to be unable to slide along the second direction b.

[0047] like Figure 6 and Figure 7 As shown, a mounting groove 221 is provided on one side of the support member 22 along the first direction a, and the ends of the two side walls opposite to each other of the mounting groove 221 are bent toward each other, and the two side walls opposite to each other of the contact support 23 are respectively provided with slide grooves 231, one end of the contact support 23 is placed in the mounting groove 221, and the other end of the contact support 23 passes through the mounting groove 221, and the ends of the two side walls opposite to the mounting groove 221 are inserted into the slide groove 231, and the contact support 23 is installed and fixed in the mounting groove 221.

[0048] Reference Figure 4 As shown, at least one armature 16 is provided on the other side of the support member 22, and the armature 16 is arranged in a one-to-one correspondence with the electromagnetic unit 12. The electromagnetic unit 12 includes an iron core, and the armature 16 is arranged in a one-to-one correspondence with the iron core. The electromagnetic unit 12 also includes an electromagnetic coil. After the electromagnetic coil is energized, the electromagnetic unit 12 generates an electromagnetic force to attract the armature 16, and the armature 16 moves toward the iron core, driving the support member 22 to move so that the moving contact and the static contact arranged on the contact support 23 are attracted. After the electromagnetic coil is de-energized, the electromagnetic force of the electromagnetic unit 12 disappears, and the armature 16 moves back to the normal position under the action of the reaction spring, and the moving contact is disconnected from the static contact.

[0049] Continue to refer to Figure 1 As shown, each contact support 23 is provided with at least two moving contacts 25, and at least two moving contacts 25 are connected in parallel to effectively reduce the temperature rise of the contacts under high voltage and high current conditions. Optionally, each contact support 23 can be provided with 2 to 10 moving contacts 25.

[0050] The contact system 2 further includes a stationary contact assembly 26, an arc extinguishing assembly, an auxiliary contact assembly, etc. Since the structures are all prior art, they are not described in detail here.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A contactor, characterized in that: include: An electromagnetic system (1) comprises a base (11) and at least one electromagnetic unit (12) arranged in the base (11), wherein the base (11) is opened at at least one end along a first direction (a), and one end of one of the electromagnetic units (12) is placed at a corresponding opening; A contact system (2) comprising a plurality of bases (21), wherein the plurality of bases (21) are sequentially arranged on the base (11) along a first direction (a); A side cover (3) is provided, wherein at least one side cover (3) is fixedly connected to an end portion of the base (11) having an opening, and an outer surface of the side cover (3) is flush with an end portion of the electromagnetic unit (12) disposed at the opening and an end portion of the base (21).

2. The contactor according to claim 1, characterized in that: The base (11) has an open end surface provided with an escape notch (111), one end of the electromagnetic unit (12) protrudes from the end surface of the base (11), and the side cover (3) is provided with an escape opening (31) for the electromagnetic unit (12) to pass through and a plug-in slot (32) plugged into the end surface of the base (11).

3. The contactor according to claim 1, characterized in that: The electromagnetic system (1) further comprises a circuit board (13) and a surge element; the side cover (3) is provided with a receiving groove (33); the circuit board (13) is arranged in the receiving groove (33); the surge element is arranged on the electromagnetic unit (12); and the circuit board (13) is electrically connected to the surge element and the electromagnetic unit (12), respectively.

4. The contactor according to claim 3, characterized in that: The electromagnetic system (1) further comprises at least one wiring unit (14), the wiring unit (14) being arranged on the circuit board (13), and the wiring unit (14) comprising a first wiring terminal (141) and a second wiring terminal (142), the first wiring terminal (141) and the second wiring terminal (142) being electrically connected to the circuit board (13) respectively, the first wiring terminal (141) and the second wiring terminal (142) being used for electrically connecting to an external power line, and the first wiring terminal (141) and the second wiring terminal (142) being arranged on the same side of the base (11).

5. The contactor according to claim 1, characterized in that: The contact system (2) further comprises a support member (22) and a plurality of contact supports (23), wherein the plurality of contact supports (23) are arranged on the support member (22), the support member (22) is slidably connected to the base (11) along a second direction (b), and connecting rods (24) are rotatably connected to the two ends of the support member (22), the two connecting rods (24) extend in the same direction, and the connecting rods (24) are rotatably connected to the base (11), and the contact supports (23) are passed through the corresponding base (21) and are slidably connected to the base (21).

6. The contactor according to claim 5, characterized in that: The end surface of the base (11) is provided with a connection hole, in which a rotatable connection member is rotatably arranged, the rotatable connection member having a first connection hole with a polygonal hole wall, the connecting rod (24) is provided with a second connection hole with a polygonal hole wall, the first connection hole is inserted with a connection shaft (15) with a polygonal cross section, and the end of the connection shaft (15) opposite to the first connection hole is inserted into the second connection hole.

7. The contactor according to claim 5, characterized in that: A mounting groove (221) is provided on one side of the support member (22) along the first direction (a), and the end portions of the two opposite side walls of the mounting groove (221) are bent toward each other, and the two opposite side walls of the contact support (23) are respectively provided with sliding grooves (231), one end of the contact support (23) is placed in the mounting groove (221), and the other end of the contact support (23) passes through the mounting groove (221), and the end portions of the two opposite side walls of the mounting groove (221) are inserted into the sliding grooves (231).

8. The contactor according to claim 5, characterized in that: Each contact support (23) is provided with at least two moving contacts (25), and at least two of the moving contacts (25) are connected in parallel.

9. The contactor according to claim 5, characterized in that: At least one armature (16) is provided on the other side of the support member (22); the electromagnetic unit (12) comprises an iron core; and the armature (16) is arranged corresponding to the iron core.

10. The contactor according to claim 1, characterized in that: At least two electromagnetic units (12) are provided, and both ends of the base (11) along the first direction (a) are provided with openings, and each opening corresponds to one electromagnetic unit (12) and one side cover (3).

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