contactor

Abstract

This utility model belongs to the field of low-voltage electrical technology and discloses a contactor, including a base, a coil assembly, a yoke assembly, a base plate, and a cover plate. A limiting groove is provided in the base; the coil assembly is disposed within the limiting groove; the yoke assembly includes a yoke and a fixing member disposed on the yoke, the yoke being disposed within the limiting groove; the base is disposed on the side of the base where the limiting groove is located, and an opening is provided on the base at a position corresponding to the limiting groove; the inner wall of the opening of the base is provided with a insertion groove corresponding to the fixing member, the fixing member being inserted into the corresponding insertion groove; the cover plate seals the opening, and the cover plate is detachably connected to the base. This contactor allows for independent fixed installation of the coil assembly and the yoke assembly, enabling independent replacement of either the coil assembly or the yoke assembly in case of failure; furthermore, the detachable cover plate facilitates disassembly, allowing for the assembly and disassembly of the coil assembly and the yoke assembly without requiring complete disassembly.

Description

Technical Field

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

[0002] Contactors are electrical devices used for frequently connecting and disconnecting AC / DC main circuits and high-capacity control circuits over long distances. They are used to control motors or other electrical loads, such as electric heaters, lighting fixtures, and capacitor banks. To adapt to the development of the new energy industry, high-current contactors, such as vacuum contactors, are widely used. Their contact system and arc-extinguishing system are integrated into a vacuum interrupter, offering advantages such as no arc ejection, high withstand voltage, strong breaking capacity, and long service life.

[0003] In existing vacuum contactors, the control module, coil assembly, and magnetic yoke assembly are generally integrated into a drawer-type structure. When any part of the control module, coil assembly, or magnetic yoke assembly fails, the entire drawer-type structure needs to be replaced, resulting in high maintenance costs and waste of resources. Furthermore, the drawer-type structure is inconvenient to disassemble and the replacement operation is cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide a contactor in which the magnetic yoke assembly or the coil assembly can be replaced separately, and the disassembly operation is simple and convenient.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Contactors, including:

[0007] The base is provided with a limiting groove;

[0008] The coil assembly is confined within the limiting groove;

[0009] A magnetic yoke assembly includes a magnetic yoke and a fixing member disposed on the magnetic yoke, wherein the magnetic yoke is disposed within the limiting groove and a portion of the magnetic yoke is located within the coil assembly;

[0010] The base is provided on one side of the base where a limiting groove is provided, and the base has an opening at a position corresponding to the limiting groove. The base has an insertion groove on the inner wall of the opening that corresponds to the fixing member, and the fixing member is inserted into the corresponding insertion groove.

[0011] A cover plate is provided to seal the opening, and the cover plate is detachably connected to the base.

[0012] As an alternative, at least two diagonally distributed positions of the limiting groove are provided with limiting bosses distributed at an angle, and at least two diagonally distributed positions of the coil assembly abut against the limiting bosses distributed at least two diagonally in the limiting groove, so that the coil assembly is limited to the limiting groove.

[0013] As an alternative, at least two fasteners are provided, and the at least two fasteners are respectively distributed at diagonal positions of the magnetic yoke;

[0014] The inner wall of the opening is provided with at least two insertion slots that correspond one-to-one with the fixing members, and at least two fixing members are respectively inserted into the two insertion slots.

[0015] As an optional embodiment, the magnetic yoke assembly further includes a fixed shaft passing through the magnetic yoke, and the fixing member is disposed at the end of the fixed shaft;

[0016] The groove wall on the side facing the center of the opening of the insertion slot is provided with a clearance notch, which is used to avoid the fixed shaft.

[0017] As an alternative, the magnetic yoke assembly further includes a buffer element, which is sleeved on the fixed shaft and sandwiched between the magnetic yoke and the fixed element.

[0018] As an optional solution, one end face of the fastener is provided with a first recessed groove;

[0019] The buffer is provided with a first ear, which is located within the first recessed groove.

[0020] As an optional solution, a support block is provided at the bottom of the limiting groove corresponding to the insertion groove, and the fixing member abuts against the support block.

[0021] As an alternative, the contactor further includes a control module electrically connected to the coil assembly;

[0022] The outer wall of the base is provided with an installation slot that communicates with the limiting groove, and the control module is disposed in the installation slot.

[0023] As an optional solution, the base has a second recessed groove communicating with the opening on the side opposite to the base;

[0024] The cover plate has a second ear on its peripheral side that corresponds to the second recessed groove, and the second ear is located within the second recessed groove.

[0025] As an alternative, the cover plate and the base are detachably connected by screws.

[0026] The beneficial effects of this utility model are:

[0027] The contactor provided by this utility model, by setting a limiting groove in the base and setting an opening in the base, realizes that the coil assembly is limited in the limiting groove and the magnetic yoke assembly is inserted into the insertion groove through the fixing member, so that the coil assembly and the magnetic yoke assembly are independently fixed and installed. When the coil assembly or the magnetic yoke assembly fails, both can be replaced independently. Furthermore, by setting a detachable cover plate to seal the opening, disassembly is made more convenient, and the coil assembly and magnetic yoke assembly can be disassembled and assembled without overall disassembly. Attached Figure Description

[0028] Figure 1 This is a front structural diagram of the contactor provided in this embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the back structure of the contactor provided in this embodiment of the utility model;

[0030] Figure 3 This is an exploded view of the contactor provided in an embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the base involved in the embodiment of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the base, the base plate, the coil assembly, and the magnetic yoke assembly involved in the embodiments of this utility model;

[0033] Figure 6 This is a cross-sectional view of the base, subbase, coil assembly, and yoke assembly involved in the embodiments of this utility model.

[0034] In the picture:

[0035] 1. Base; 11. Limiting groove; 111. Limiting boss; 112. Support block; 12. Mounting slot;

[0036] 2. Coil assembly;

[0037] 3. Magnetic yoke assembly; 31. Magnetic yoke; 32. Fixing element; 33. Buffer element; 331. First ear;

[0038] 4. Base; 41. Opening; 411. Insertion groove; 4111. Clearance notch; 412. Joint; 42. Second recessed groove;

[0039] 5. Cover plate; 51. Second ear; 52. Screw;

[0040] 6. Control module. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] like Figures 1-6 As shown, this utility model embodiment provides a contactor, which includes a base 1, a coil assembly 2, a magnetic yoke assembly 3, a base 4, and a cover plate 5.

[0046] The base 1 has a limiting groove 11; the coil assembly 2 is disposed in the limiting groove 11, and the coil assembly 2 includes a coil frame and a winding wound on the coil frame. The limiting groove 11 can limit the coil frame; the magnetic yoke assembly 3 includes a magnetic yoke 31 and a fixing member 32 disposed on the magnetic yoke 31. The magnetic yoke 31 is disposed in the limiting groove 11, and the coil frame is sleeved on the magnetic yoke 31. The magnetic yoke 31 and the coil frame do not contact each other; the base 4 is disposed on the side of the base 1 where the limiting groove 11 is provided, and the base 4 has an opening 41 at the position corresponding to the limiting groove 11. The coil assembly 2 and the magnetic yoke assembly 3 can be installed or removed through the opening 41; the base 4 has an insertion groove 411 corresponding to the fixing member 32 on the inner wall of the opening 41, and the fixing member 32 is inserted into the corresponding insertion groove 411; the cover plate 5 covers the opening 41, and the cover plate 5 is detachably connected to the base 4.

[0047] The contactor, by providing a limiting groove 11 in the base 1 and an opening 41 in the base 4, enables the coil assembly 2 to be confined within the limiting groove 11 and the magnetic yoke assembly 3 to be inserted into the insertion slot 411 via the fixing member 32. This allows the coil assembly 2 and the magnetic yoke assembly 3 to be installed independently, and in the event of a failure of either the coil assembly 2 or the magnetic yoke assembly 3, both can be replaced independently. Furthermore, by providing a removable cover plate 5 to seal the opening 41, disassembly is made more convenient, and the coil assembly 2 and the magnetic yoke assembly 3 can be disassembled and assembled without the need for complete disassembly.

[0048] During disassembly, first remove the cover plate 5, then remove the magnetic yoke assembly 3, then remove the coil assembly 2. After replacing the new parts, first install the coil assembly 2, then install the magnetic yoke assembly 3, and then install the cover plate 5 to complete the assembly.

[0049] Optionally, such as Figures 3-4 As shown, at least two diagonally distributed positions of the limiting groove 11 are provided with limiting bosses 111 arranged at an angle. The limiting bosses 111 are provided on the bottom of the limiting groove 11. The limiting bosses 111 may include two limiting blocks provided on both sides of each corner line. When the coil assembly 2 is limited in the limiting groove 11, that is, in the two opposite corners of the coil frame, the two adjacent sides of each corner abut against the corresponding limiting blocks, so that the coil assembly 2 is fixedly limited in the limiting groove 11. This structure makes it easy to assemble and disassemble the coil assembly 2.

[0050] In this embodiment, limiting bosses 111 are also provided at two other diagonally distributed positions in the limiting groove 11, arranged at an angle. When the coil assembly 2 is confined within the limiting groove 11, the four corners of the coil frame abut against the limiting bosses 111 at the four corners of the limiting groove 11. Alternatively, in other embodiments, limiting bosses 111 may be provided at three corners within the limiting groove 11.

[0051] Optionally, at least two fasteners 32 are provided, and the at least two fasteners 32 are respectively distributed at diagonal positions on the magnetic yoke 31. The inner wall of the opening 41 is provided with at least two insertion slots 411 corresponding to the fasteners 32, and the at least two fasteners 32 are inserted into the two insertion slots 411 respectively. By setting at least two fasteners 32 at diagonal positions on the magnetic yoke 31 and providing insertion slots 411 at corresponding positions on the inner wall of the opening 41, and by having at least two fasteners 32 respectively inserted into the two insertion slots 411, the magnetic yoke 31 is securely installed.

[0052] In this embodiment, four fasteners 32 are provided, located at the four corners of the magnetic yoke 31. Insertion slots 411 are provided at the four corners of the inner wall of the opening 41, and the four fasteners 32 are inserted into the four insertion slots 411, further improving the installation stability of the magnetic yoke assembly 3. Alternatively, in other embodiments, three fasteners 32 may be provided, located at the three corners of the magnetic yoke 31.

[0053] Specifically, the magnetic yoke assembly 3 also includes a fixed shaft passing through the magnetic yoke 31. The fixed shaft is distributed near the edge of the magnetic yoke 31, and the fixing member 32 is disposed at the end of the fixed shaft to facilitate the installation of the fixing member 32. The groove wall of the insertion groove 411 facing the center of the opening 41 is provided with a clearance notch 4111. When the fixing member 32 is inserted into the insertion groove 411, the fixed shaft is located in the clearance notch 4111 to avoid interference between the fixed shaft and the groove wall of the insertion groove 411, so as to achieve clearance.

[0054] In this embodiment, two fixed shafts can be provided, which are spaced apart and close to the two sides of the magnetic yoke 31 respectively. Four fixing members 32 are provided, which are arranged in pairs at the two ends of each fixed shaft.

[0055] In order to achieve the buffering of the magnetic yoke 31, the magnetic yoke assembly 3 also includes a buffer 33, which is sleeved on the fixed shaft and clamped between the magnetic yoke 31 and the fixed member 32.

[0056] Furthermore, in order to prevent the buffer 33 from rotating or displacing on the fixed shaft, a first recessed groove is provided on one end face of the fixed member 32, and a first ear 331 is provided on the buffer 33. The first ear 331 is limited to the first recessed groove, so that the buffer 33 cannot rotate or displace, making the structural design more reasonable.

[0057] In order to limit the magnetic yoke assembly 3 along the depth direction of the limiting groove 11, a support block 112 is provided at the bottom of the limiting groove 11 at the position corresponding to the insertion groove 411. When the fixing member 32 is inserted into the insertion groove 411, the fixing member 32 abuts against the support block 112. In this embodiment, four support blocks 112 are provided, and the four support blocks 112 are respectively located at the four corners of the limiting groove 11.

[0058] It is understandable that when cover plate 5 is placed over opening 41, such as Figure 6 As shown, the fastener 32 is clamped between the support block 112 and the cover plate 5, that is, the cover plate 5 presses and limits the fastener 32 on the side away from the support block 112.

[0059] Optionally, the first recessed groove can be provided on the end face of the fixing member 32 facing or away from the support block 112, so that the support block 112 or the cover plate 5 can simultaneously press against the first ear 331, making the buffer member 33 more securely installed.

[0060] In the prior art, the control module 6 is located in a drawer-type structure, that is, the control module 6 is located inside the contactor, which makes it difficult for the heat generated by the control module 6 during operation to dissipate, thus causing the internal temperature of the contactor to be too high.

[0061] To solve the above problems, such as Figure 5 and combined Figure 2 As shown, the control module 6 in this contactor is located outside the contactor. Specifically, the outer wall of the base 1 has a mounting slot 12, which communicates with the limiting slot 11. The control module 6 is disposed within the mounting slot 12 and is electrically connected to the coil assembly 2 via a wire. By placing the control module 6 within the mounting slot 12, the control module 6 is exposed to the external environment, allowing for rapid heat dissipation after it generates heat, preventing heat accumulation inside the contactor and avoiding overheating of the contactor as a result.

[0062] Specifically, the mounting slot 12 is open on the side facing the base 4. After the base 4 is installed, the open side is closed. This structure makes full use of the space between the base 1 and the base 4, making the structure more compact.

[0063] Optionally, in order to enable the cover plate 5 to be pre-positioned when assembled with the base 4 for easy connection, the base 4 is provided with a second recessed groove 42 communicating with the opening 41 on the side opposite to the base 1; the peripheral side of the cover plate 5 is provided with a second ear 51 corresponding to the second recessed groove 42. When the cover plate 5 and the base 4 are installed, the second ear 51 is guided by cooperating with the second recessed groove 42, so that the cover plate 5 and the base 4 can be accurately positioned, making it more convenient to connect the cover plate 5 with the base 4.

[0064] In this embodiment, four second recessed grooves 42 are provided. The four second recessed grooves 42 are arranged in pairs on the base 4 and located on opposite sides of the opening 41 along the width direction of the contactor. The cover plate 5 is provided with four second ears 51 that correspond one-to-one with the second recessed grooves 42. The four second ears 51 are respectively confined within the four second recessed grooves 42.

[0065] Optionally, the cover plate 5 and the base 4 can be connected by screws 52. The screw connection method is simple to operate and low in cost. The screws 52 can be ordinary screws or self-tapping screws.

[0066] In this embodiment, each second recessed groove 42 has a threaded hole at its bottom, and each second ear 51 has a through hole. A screw 52 can pass through the through hole and be screwed into the corresponding threaded hole to connect the cover plate 5 and the base 4. Furthermore, to make the cover plate 5 more securely installed, the base 4 has two opposing inner walls along the length of the contactor within the opening 41, each with a connecting portion 412 having a threaded hole. A through hole is provided on the cover plate 5 at a position corresponding to the connecting portion 412, allowing the screw 52 to be screwed into the threaded hole of the connecting portion 412 through the through hole corresponding to the connecting portion 412.

[0067] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A contactor, characterized in that, include: A base (1) is provided with a limiting groove (11); The coil assembly (2) is confined within the limiting groove (11); The magnetic yoke assembly (3) includes a magnetic yoke (31) and a fastener (32) disposed on the magnetic yoke (31), wherein the magnetic yoke (31) is disposed in the limiting groove (11) and a portion of the magnetic yoke (31) is located in the coil assembly (2); The base (4) is disposed on one side of the base (1) where a limiting groove (11) is provided, and the base (4) has an opening (41) at the position corresponding to the limiting groove (11). The base (4) has an insertion groove (411) corresponding to the fixing member (32) on the inner wall of the opening (41). The fixing member (32) is inserted into the corresponding insertion groove (411). A cover plate (5) is provided to cover the opening (41), and the cover plate (5) is detachably connected to the base (4).

2. The contactor according to claim 1, characterized in that, At least two diagonally distributed positions of the limiting groove (11) are provided with limiting bosses (111) arranged at an angle. At least two diagonals of the coil assembly (2) abut against the limiting bosses (111) arranged at least two diagonally in the limiting groove (11) so that the coil assembly (2) is limited to the limiting groove (11).

3. The contactor according to claim 1, characterized in that, At least two fasteners (32) are provided, and the at least two fasteners (32) are respectively distributed at diagonal positions of the magnetic yoke (31); The inner wall of the opening (41) is provided with at least two insertion slots (411) corresponding one-to-one with the fixing member (32), and at least two fixing members (32) are respectively inserted into the two insertion slots (411).

4. The contactor according to claim 1, characterized in that, The magnetic yoke assembly (3) further includes a fixed shaft passing through the magnetic yoke (31), and the fixing member (32) is disposed at the end of the fixed shaft; The insertion groove (411) has a clearance notch (4111) on the side of the groove wall facing the center of the opening (41), and the clearance notch (4111) is used to avoid the fixed shaft.

5. The contactor according to claim 4, characterized in that, The magnetic yoke assembly (3) also includes a buffer (33), which is sleeved on the fixed shaft and sandwiched between the magnetic yoke (31) and the fixed member (32).

6. The contactor according to claim 5, characterized in that, A first recessed groove is provided on one end face of the fastener (32); The buffer (33) is provided with a first ear (331), which is located within the first recessed groove.

7. The contactor according to claim 1, characterized in that, A support block (112) is provided at the bottom of the limiting groove (11) at a position corresponding to the insertion groove (411), and the fixing member (32) abuts against the support block (112).

8. The contactor according to claim 1, characterized in that, The contactor also includes a control module (6), which is electrically connected to the coil assembly (2); The outer wall of the base (1) is provided with an installation slot (12) that communicates with the limiting groove (11), and the control module (6) is disposed in the installation slot (12).

9. The contactor according to claim 1, characterized in that, The base (4) has a second recessed groove (42) communicating with the opening (41) on the side opposite to the base (1); The cover plate (5) has a second ear (51) on its peripheral side that corresponds to the second recessed groove (42), and the second ear (51) is located within the second recessed groove (42).

10. The contactor according to any one of claims 1-9, characterized in that, The cover plate (5) and the base (4) are detachably connected by screws (52).

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