Electromagnetic system and contactor

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an electromagnetic system and a contactor, and the electromagnetic system comprises a coil assembly, an iron core assembly, and a fixing assembly. The coil assembly comprises a coil framework, and the coil framework comprises a winding part and a clamping part which are connected; the winding part is provided with a winding groove, and the clamping part is located outside the winding groove. The iron core assembly is connected with the fixing assembly and penetrates through the coil framework; the clamping part is clamped to the fixing assembly, so that the iron core assembly is partially limited between the winding part and the fixing assembly, firm connection of the coil framework and the fixing assembly is ensured, meanwhile, the limiting reliability of the iron core assembly can be improved, and the situation that after the electromagnetic coil is powered on, the coil assembly shakes up and down due to impact force generated when the iron core assembly is attracted is prevented; and the working reliability of the coil assembly and the iron core assembly is ensured. Moreover, the clamping part is positioned outside the winding groove of the coil framework, so that the space for winding the electromagnetic coil is not occupied, and the volume of the coil framework is favorably controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field especially relates to a electromagnetic system and contactor. BACKGROUND

[0002] The contactor includes a contactor housing and an electromagnetic system disposed in the contactor housing, and the electromagnetic system includes a coil unit and a core. The coil unit includes a coil framework and an electromagnetic coil wound on the coil framework, and the core is threaded in the coil framework.

[0003] The electromagnetic system of the existing contactor has poor fixation of the coil unit, especially for the coil framework position, the core is threaded in the coil framework, the core generates magnetic force when the electromagnetic coil is powered on, and the coil unit is easily shaken up and down under the action of the magnetic force, which causes damage to the connection of the coil unit, poor stability and affects the working reliability of the electromagnetic system. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a electromagnetic system and contactor, can improve the fixed firmness of coil unit, reduce the shaking of coil unit under the action of electromagnetic attraction, improve the working reliability of contactor electromagnetic system.

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

[0006] In a first aspect, a electromagnetic system is provided, including a coil assembly, a core assembly and a fixing assembly;

[0007] The coil assembly includes a coil framework, and the coil framework includes a winding part and a clamping part connected together. The winding part has a winding groove, and the clamping part is located outside the winding groove.

[0008] The core assembly is connected with the fixing assembly and is threaded in the coil framework.

[0009] The clamping part is clamped in the fixing assembly, so that the core assembly is partially limited between the winding part and the fixing assembly.

[0010] As an optional scheme of the electromagnetic system provided by the utility model, the fixing assembly includes a bottom plate and a first mounting part provided on the bottom plate, the core assembly is connected to the first mounting part, and the core assembly is partially limited between the winding part and the bottom plate.

[0011] One of the clamping part and the bottom plate is provided with a first buckle, and the other of the clamping part and the bottom plate is provided with a first clamping hole, and the first buckle is clamped in the first clamping hole.

[0012] As an optional scheme of the electromagnetic system provided by the utility model, the iron core assembly comprises an iron core main body and a mounting shaft penetrating through the iron core main body, and the first mounting part is arranged at both ends of the mounting shaft;

[0013] The first mounting part is provided with a through hole and a limiting through hole in communication, the mounting shaft passes through the through hole and enters the limiting through hole in the radial direction of the mounting shaft, the fixing assembly further comprises a supporting piece, the supporting piece is inserted into the limiting through hole in the axial direction of the mounting shaft, the supporting piece is provided with a first fixing hole, a supporting shaft sleeve is inserted into the first fixing hole, and the supporting shaft sleeve is sleeved on the end of the mounting shaft.

[0014] As an optional scheme of the electromagnetic system provided by the utility model, the coil assembly further comprises a wire box and a circuit board;

[0015] The coil former is located outside the wire box, the circuit board is located inside the wire box, the electromagnetic coil is wound on the coil former, and the electromagnetic coil is electrically connected with the circuit board; and the wire box and the bottom plate are detachably connected.

[0016] As an optional scheme of the electromagnetic system provided by the utility model, the bottom plate is provided with a positioning groove, the first clamping hole penetrates the bottom wall of the positioning groove, and the clamping part is partially located in the positioning groove;

[0017] And / or, a containing groove is recessed on the side of the bottom plate away from the iron core assembly, the containing groove is in communication with the first clamping hole, and the first clamping buckle is clamped in the containing groove.

[0018] Secondly, an electromagnetic system is provided, comprising a coil assembly and an iron core assembly, the coil assembly comprises a coil former, a wire box, a cover body and a circuit board electrically connected with an electromagnetic coil wound on the coil former;

[0019] The wire box is provided with a first mounting groove and a second mounting groove; the bottom wall of the first mounting groove is provided with a second clamping hole and a through hole;

[0020] The coil former comprises a winding part for winding the electromagnetic coil and a first buckle connected to the bottom of the winding part, the winding part is arranged in the first mounting groove and is clamped with the second clamping hole through the first buckle, the end of the winding part covers the slot of the first mounting groove, and the iron core assembly is arranged in the coil former through the through hole;

[0021] The circuit board is located in the second mounting groove, the cover body is buckled on the wire box and covers the slot of the second mounting groove, and the end of the winding part abuts against the cover body.

[0022] As optional scheme of the electromagnetic system provided by the utility model, the wire box is provided with a thickened boss, the second clamping hole penetrates the thickened boss, and the first clamping hook is clamped on the thickened boss.

[0023] And / or, the electromagnetic system further comprises a plurality of fixing members, the fixing members comprise a second mounting portion and a second clamping buckle connected with each other, the second mounting portion is detachably connected with the iron core assembly, the second clamping buckle is clamped on the wire box, and at least one second clamping buckle can clamp the cover body so as to limit the cover body from moving away from the second mounting groove.

[0024] And / or, the cover body is provided with a third clamping buckle, the wire box is provided with a third clamping hole communicated with the second mounting groove, and the third clamping buckle is clamped on the third clamping hole.

[0025] As optional scheme of the electromagnetic system provided by the utility model, the inner hole of the coil framework is provided with a limiting rib on the hole wall opposite in the first direction, the inner hole of the coil framework is provided with an avoiding groove on the hole wall opposite in the second direction, and the avoiding groove is provided with a limiting plane on both sides.

[0026] The iron core assembly comprises an iron core main body and a connecting shaft penetrating the iron core main body, the avoiding groove is used for avoiding the end portion of the connecting shaft, and the limiting rib and the limiting plane are all abutted to the iron core main body.

[0027] The first direction and the second direction are arranged at an included angle.

[0028] As optional scheme of the electromagnetic system provided by the utility model, the electromagnetic system further comprises a drawer seat, and the drawer seat is provided with a plug-in space used for plugging in the coil assembly and the iron core assembly.

[0029] The drawer seat is provided with a sliding rail, and the coil framework is provided with a sliding groove, and the sliding groove and the sliding rail are slidably matched.

[0030] In a third aspect, a contactor is provided, comprising a contactor shell and the electromagnetic system as described above, and the electromagnetic system is mounted on the contactor shell.

[0031] The utility model has the advantages of:

[0032] The utility model provides a kind of electromagnetic system, the clamping of fixed assembly is realized by the clamping portion on the coil framework, and part of iron core assembly can be limited between winding portion and fixed assembly while clamping, while ensuring the firm connection of coil framework and fixed assembly, the limiting reliability of iron core assembly can be improved, prevent the impact force when iron core assembly attraction after electromagnetic coil energization, coil assembly shakes up and down, ensure the working reliability of coil assembly and iron core assembly.Moreover, since the clamping portion is located outside the winding groove of the coil framework, it does not occupy the space for winding electromagnetic coil, which is conducive to controlling the size of the coil framework.

[0033] Another electromagnetic system provided by the utility model, by setting the line box with first installation slot and second installation slot, the coil framework is installed in the first installation slot, and is clamped with the line box through the first buckle, the stable connection of coil framework and line box can be realized.Circuit board is installed in the second installation slot, and is clamped in the slot of the second installation slot by the cover, so as to limit the circuit board in the second installation slot.Because the end of the coil framework of the cover and the first installation slot slot is abutted, the opening position of the whole line box can have better appearance quality.In addition, since the first buckle is connected to the bottom of the winding portion, it does not occupy the space for winding electromagnetic coil, which is conducive to controlling the size of the coil framework.

[0034] The contactor provided by the utility model, since the coil framework of the coil assembly is clamped on the corresponding fixed assembly or line box, the fixing firmness of the coil framework can be improved, the coil framework shaking problem caused by magnetic attraction when electromagnetic coil is energized can be reduced, thereby helping to improve the working reliability of the contactor, and the clamping part of the coil assembly does not occupy the space for winding electromagnetic coil, which is conducive to controlling the size of the coil framework, thereby preventing the overall size of the contactor from being too large. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiments of the utility model will be briefly introduced below, and obviously, the drawings described below are only some embodiments of the utility model, and other drawings can be obtained according to the drawings without creative labor for those skilled in the art.

[0036] Figure 1 is the first structure schematic view of the electromagnetic system provided by the embodiment one of the utility model;

[0037] Figure 2 is the exploded schematic view of the coil assembly of the electromagnetic system provided by the embodiment one of the utility model;

[0038] Figure 3 is the exploded schematic view of the electromagnetic system provided by the embodiment one of the utility model;

[0039] Figure 4 is a structural schematic view of the iron core assembly and the fixing assembly provided by the embodiment one of the utility model;

[0040] Figure 5 is a second structural schematic view of the electromagnetic system provided by the embodiment one of the utility model;

[0041] Figure 6 is a structural schematic view of the wire box and the cover of the coil assembly provided by the embodiment one of the utility model;

[0042] Figure 7 is a structural schematic view of the drawer seat of the electromagnetic system provided by the embodiment of the utility model;

[0043] Figure 8 is a structural schematic view of the electromagnetic system provided by the embodiment two of the utility model;

[0044] Figure 9 is an exploded schematic view of the electromagnetic system provided by the embodiment two of the utility model;

[0045] Figure 10 is a first structural schematic view of the electromagnetic unit of the electromagnetic system provided by the embodiment two of the utility model;

[0046] Figure 11 is an exploded schematic view of the coil assembly of the electromagnetic system provided by the embodiment two of the utility model;

[0047] Figure 12 is a second structural schematic view of the electromagnetic unit of the electromagnetic system provided by the embodiment two of the utility model;

[0048] Figure 13 is an exploded schematic view of the electromagnetic unit of the electromagnetic system provided by the embodiment two of the utility model;

[0049] Figure 14 is a sectional schematic view of the fixing piece provided by the embodiment two of the utility model.

[0050] In the drawing:

[0051] 1, coil assembly; 2, iron core assembly; 3, fixing assembly; 4, support shaft sleeve; 5, drawer seat; 6, sliding groove; 10, electromagnetic unit;

[0052] 11, coil framework; 12, wire box; 13, cover; 14, wiring screw; 15, wiring board;

[0053] 110, winding groove; 111, winding part; 112, clamping part; 1121, first buckle;

[0054] 113, limiting rib; 114, avoiding groove; 115, limiting plane;

[0055] 121 positioning column; 122 first insertion slot; 123 second insertion rib; 124 box body; 125 second wiring part; 126 first mounting slot; 127 second mounting slot; 128 second clamping hole; 129 through hole; 1210 clamping notch; 1220 thickened boss; 1230 third clamping hole;

[0056] 1241 sixth clasp; 1242 insertion slot;

[0057] 1251 wiring slot; 1252 connecting plate;

[0058] 12521 fourth clamping hole;

[0059] 131 first cover plate; 132 second cover plate; 133 first wiring part; 134 third clasp;

[0060] 1311 fourth clasp; 1321 fifth clasp;

[0061] 1331 threading hole; 1332 operation hole;

[0062] 151 first insertion rib; 152 second insertion slot;

[0063] 21 iron core main body; 22 mounting shaft; 23 connecting shaft;

[0064] 211 middle column; 212 side column;

[0065] 31 bottom plate; 32 first mounting part; 33 support; 34 fixing part; 35 lock catch assembly;

[0066] 311 first clamping hole; 312 positioning hole; 313 positioning slot; 314 accommodating slot;

[0067] 321 through hole; 322 limiting through hole;

[0068] 331 first fixing hole;

[0069] 341 second mounting part; 342 second clasp; 343 limiting plate; 344 limiting space;

[0070] 3410 second fixing hole; 3411 partition plate; 3412 embedded slot;

[0071] 3431 avoiding notch;

[0072] 351 locking part; 352 elastic part;

[0073] 51 insertion space; 52 sliding rail; 53 lock hole. DETAILED DESCRIPTION

[0074] The utility model will be described further in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings, not all the structures.

[0075] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0076] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0077] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0078] In the embodiment, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in the utility model generally represents that the front and rear associated objects have an "or" relationship.

[0079] In the embodiments of the utility model, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments.

[0080] Example 1

[0081] like Figures 1 to 7 As shown, this embodiment provides an electromagnetic system, including an electromagnetic unit 10, which includes a coil assembly 1, an iron core assembly 2, and a fixing assembly 3.

[0082] Combination Figure 1 and Figure 2 The coil assembly 1 includes a coil frame 11, which includes a winding portion 111 and a snap-fit ​​portion 112 connected together. The winding portion 111 has a winding groove 110 for winding an electromagnetic coil. The snap-fit ​​portion 112 is located outside the winding groove 110, thus not occupying the space inside the winding groove 110 and not affecting the winding of the electromagnetic coil. The core assembly 2 is connected to the fixing assembly 3 and passes through the inner hole of the coil frame 11. After the electromagnetic coil is energized, the core assembly 2 generates magnetism. The snap-fit ​​portion 112 snaps into the fixing assembly 3, so that a portion of the core assembly 2 is confined between the winding portion 111 and the fixing assembly 3.

[0083] The electromagnetic system provided in this embodiment achieves engagement with the fixing component 3 through the snap-fit ​​portion 112 on the coil frame 11. Simultaneously, this snap-fit ​​position limits a portion of the iron core component 2 between the winding portion 111 and the fixing component 3. This ensures a secure connection between the coil frame 11 and the fixing component 3 while improving the reliability of the iron core component 2's positioning. It prevents the coil assembly 1 from wobbling due to the impact force of the iron core component 2 engaging when the electromagnetic coil is energized, thus ensuring the operational reliability of both the coil assembly 1 and the iron core component 2. Furthermore, since the snap-fit ​​portion 112 is located outside the winding groove 110 of the coil frame 11, it does not occupy the space for winding the electromagnetic coil, which helps control the volume of the coil frame 11.

[0084] See Figure 3 and Figure 4 The core assembly 2 includes a core body 21 and a mounting shaft 22 passing through the core body 21. The core body 21 is connected to the fixing assembly 3 via the mounting shaft 22. The core body 21 is mountain-shaped and includes a bottom post, a middle post 211 perpendicular to the bottom post, and two side posts 212. The middle post 211 is located between the two side posts 212. Specifically, the middle post 211 of the core body 21 passes through the inner hole of the coil frame 11, and the two side posts 212 are located on both sides of the coil frame 11. When the snap-fit ​​part 112 snaps into the fixing assembly 3, the bottom post is limited between the winding part 111 and the fixing assembly 3.

[0085] See Figure 3 and Figure 4The fixing assembly 3 comprises a bottom plate 31 and a first mounting portion 32 arranged on the bottom plate 31, and the iron core assembly 2 is connected to the first mounting portion 32 through the mounting shaft 22, and the bottom column of the iron core assembly 2 is limited between the winding portion 111 and the bottom plate 31. Specifically, one of the clamping portion 112 and the bottom plate 31 is provided with a first clamping buckle 1121, and the other of the clamping portion 112 and the bottom plate 31 is provided with a first clamping hole 311, and the first clamping buckle 1121 is clamped in the first clamping hole 311 to achieve clamping and fixing between the coil former 11 and the bottom plate 31. Exemplarily, the first clamping buckle 1121 is arranged on the clamping portion 112 of the coil assembly 1, and the first clamping hole 311 is arranged on the bottom plate 31.

[0086] Further, the bottom of the winding portion 111 is provided with two clamping portions 112, and the two clamping portions 112 are arranged on both sides of the iron core body 21, and each clamping portion 112 is provided with two first clamping buckles 1121, and correspondingly, four first clamping holes 311 are arranged on the bottom plate 31 to be clamped and fixed with the four first clamping buckles 1121 one by one, so as to ensure that the coil assembly 1 and the bottom plate 31 are stably connected.

[0087] As shown in Figure 3 and Figure 4 , two ends of the mounting shaft 22 are provided with the first mounting portion 32; the first mounting portion 32 is provided with a through hole 321 and a limiting through hole 322 which are connected, and the mounting shaft 22 passes through the through hole 321 into the limiting through hole 322 along the radial direction thereof. The fixing assembly 3 further comprises a support 33 which is inserted into the limiting through hole 322 along the axial direction of the mounting shaft 22; the support 33 is provided with a first fixing hole 331, and a support shaft sleeve 4 is inserted into the first fixing hole 331, and the support shaft sleeve 4 is sleeved on the end of the mounting shaft 22. Further, after the iron core assembly 2 and the fixing assembly 3 are installed, there is a gap between the iron core body 21 and the bottom plate 31 to adapt to the movement of the iron core assembly 2 caused by the deformation of the support shaft sleeve 4.

[0088] For the convenience of description, a first direction, a second direction and a third direction are introduced for description, wherein the first direction is the X direction in Figure 3 , and is also the distribution direction of the middle column 211 and the side column 212 of the iron core body 21; the second direction is the Y direction in Figure 3 , and is also the axial direction of the mounting shaft 22; and the third direction is the Z direction in Figure 3 , and is also the axial direction of the coil former 11, that is, the iron core assembly 2 is inserted into the coil former 11 along the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0089] When the iron core assembly 2 and the fixing assembly 3 are installed, the iron core assembly 2 is placed on the bottom plate 31 of the fixing assembly 3 along the third direction, and the mounting shafts 22 are respectively extended out of both ends of the iron core body 21 and then extended into the limiting through holes 322 through the through holes 321 along the third direction. After the support shaft sleeve 4 is inserted into the first fixing holes 331 on the support pieces 33, the support pieces 33 are inserted into the limiting through holes 322 along the second direction, and the support shaft sleeve 4 is sleeved with the mounting shafts 22 inside the limiting through holes 322, thereby completing the detachable connection between the iron core assembly 2 and the fixing assembly 3. After the installation is completed, a gap is left between the iron core assembly 2 and the bottom plate 31.

[0090] Further, one of the outer wall of the support piece 33 and the inner wall of the limiting through hole 322 is provided with a guide protrusion, and the other of the outer wall of the support piece 33 and the inner wall of the limiting through hole 322 is provided with a guide groove, the guide protrusion and the guide groove are slidably matched, for guiding and positioning the insertion of the support piece 33 into the limiting through hole 322, thereby further improving the installation stability of the support piece 33 in the fixing frame.

[0091] As shown in Figure 1 and Figure 3 , the bottom plate 31 is provided with a positioning groove 313, the first clamping hole 311 penetrates the bottom wall of the positioning groove 313, and the clamping portion 112 is partially located in the positioning groove 313. The positioning groove 313 can be used to roughly position the installation position of the coil former 11 on the bottom plate 31, thereby improving the assembly efficiency and the installation stability of the coil former 11 on the bottom plate 31.

[0092] As shown in Figure 1 and Figure 5 , the side of the bottom plate 31 away from the iron core assembly 2 is recessed with a containing groove 314, the containing groove 314 is communicated with the first clamping hole 311, and the first clamping buckle 1121 is hooked in the containing groove 314. The containing groove 314 can hide the part of the first clamping buckle 1121 extending out of the first clamping hole 311, thereby avoiding the protruding part on the bottom of the bottom plate 31 from affecting the subsequent installation. Further, the height of the first clamping buckle 1121 relative to the bottom wall of the containing groove 314 is not greater than the depth of the containing groove 314, so as to ensure that the first clamping buckle 1121 does not protrude from the bottom surface of the bottom plate 31.

[0093] The positioning groove 313 and the containing groove 314 are opposite to each other, the thickness dimension of the bottom plate 31 at this position can be reduced, and the first clamping buckle 1121 does not need to be set to be too long.

[0094] Referring to Figure 1 , Figure 2 and Figure 3The coil assembly 1 further comprises a wire box 12 and a circuit board; the coil former 11 is located outside the wire box 12, and the circuit board is located inside the wire box 12, and the electromagnetic coil wound on the coil former 11 is electrically connected with the circuit board; the wire box 12 is detachably connected with the bottom plate 31, and the wire box 12 can be individually detached. The wire box 12 can play a role in mounting and fixing the circuit board, and since the coil former 11 is located outside the wire box 12, the size of the wire box 12 does not need to be set to be relatively large.

[0095] Specifically, referring to Figure 2 , the bottom of the wire box 12 is provided with a positioning column 121, referring to Figure 3 , the bottom plate 31 is provided with a positioning hole 312, and the positioning column 121 is inserted into the positioning hole 312 to achieve detachable connection of the wire box 12 on the bottom plate 31.

[0096] As shown in Figure 2 , in the embodiment, the opening of the wire box 12 faces the coil. The coil assembly 1 further comprises a terminal block 15, a first end of the terminal block 15 is connected with the coil former 11, a second end of the terminal block 15 is inserted into the wire box 12 and is provided with a terminal, the terminal is electrically connected with the electromagnetic coil and is electrically connected with the circuit board. The terminal block 15 extends to the direction where the wire box 12 is located, and the terminal of the second end is inserted into the circuit board and is welded on the circuit board to achieve electrical connection between the terminal block 15 and the circuit board.

[0097] As shown in Figure 2 , the second end of the terminal block 15 is provided with a first insertion rib 151, the wire box 12 is provided with a first insertion slot 122, and the first insertion rib 151 is inserted into the first insertion slot 122 along the insertion direction; and / or, the second end of the terminal block 15 is provided with a second insertion slot 152, the wire box 12 is provided with a second insertion rib 123, and the second insertion rib 123 is inserted into the second insertion slot 152 along the insertion direction; wherein the insertion direction is the direction in which the terminal block 15 is inserted into the wire box 12. In the embodiment, the insertion direction is the first direction, the terminal block 15 is inserted into the wire box 12 along the first direction, and detachable connection between the coil former 11 and the wire box 12 is achieved.

[0098] Specifically, the second end of the terminal block 15 is provided with the first insertion rib 151 and the second insertion slot 152 on both sides along the second direction, and the wire box 12 is provided with the first insertion slot 122 and the second insertion rib 123 on both sides along the second direction. The first insertion rib 151 is inserted into the corresponding first insertion slot 122, and the second insertion slot 152 is inserted into the corresponding second insertion rib 123.

[0099] Referring to Figure 1 , Figure 2 and Figure 3The coil assembly 1 further comprises a cover 13 buckled on the wire box 12, so that the coil assembly 1 has better appearance quality after assembly. In the embodiment, the cover 13 comprises a first cover plate 131 and a second cover plate 132 arranged at an angle, the first cover plate 131 is provided with a fourth buckle 1311, and the second cover plate 132 is provided with a fifth buckle 1321; both ends of the second cover plate 132 are provided with a first wiring portion 133, and the first wiring portion 133 is provided with a threading hole 1331 and an operation hole 1332 (as shown in Figure 6 ). The threading hole 1331 is used for threading an external lead wire.

[0100] Referring to Figure 2 and Figure 6 , the wire box 12 comprises a box body 124 and a second wiring portion 125 connected to the outside of the box body 124. The opening of the box body 124 faces the coil former 11, and a circuit board is arranged in the box body 124. The box body 124 is provided with a sixth buckle 1241 outside, and the sixth buckle 1241 and the second wiring portion 125 are arranged on different sides of the box body 124. The second wiring portion 125 is provided with two wiring grooves 1251 spaced apart and a connecting plate 1252 between the two wiring grooves 1251; a wiring frame and a wiring screw 14 are arranged in the wiring groove 1251, which are used for realizing the wiring of the electromagnetic system. The connecting plate 1252 is provided with a fourth clamping hole 12521; the operation hole 1332 is configured to extend into a tool for screwing the wiring screw 14, the external lead wire extends into the wiring groove 1251 through the threading hole 1331, and the tool extends into the operation hole 1332 to screw the wiring screw 14, so that the lead wire is pressed on the wiring frame.

[0101] The first cover plate 131 is arranged on the box body 124, and the second cover plate 132 is attached to the connecting plate 1252; the two first wiring portions 133 are correspondingly inserted into the two wiring grooves 1251, the fourth buckle 1311 is buckled with the corresponding sixth buckle 1241, and the fifth buckle 1321 is buckled with the corresponding fourth clamping hole 12521, so as to realize the clamping of the cover 13 and the wire box 12.

[0102] In the embodiment, referring to Figure 3The inner hole of the coil framework 11 is provided with a limiting rib 113 on the two hole walls opposite in the first direction, the inner hole of the coil framework 11 is provided with an avoiding groove 114 on the two hole walls opposite in the second direction, and the avoiding groove 114 is provided with a limiting plane 115 on both sides. The core body 21 of the core assembly 2 is provided with a connecting shaft 23 penetrating through, the avoiding groove 114 is used for avoiding the end of the connecting shaft 23, and the limiting rib 113 and the limiting plane 115 abut against the middle column 211 of the core body 21. That is, in the first direction, the limiting rib 113 protruding abuts against the middle column 211 of the core body 21, and in the second direction, the limiting plane 115 abuts against the middle column 211, which can prevent the coil framework 11 from being displaced in the first direction and the second direction, and improve the stability of the coil assembly 1 as a whole.

[0103] As shown in Figure 7 , the electromagnetic system further comprises a drawer seat 5, the drawer seat 5 is provided with a plug-in space 51 for plugging the coil assembly 1 and the core assembly 2, specifically, the electromagnetic unit 10 formed by assembling the coil assembly 1, the core assembly 2 and the fixing assembly 3 is plugged into the plug-in space 51 in the first direction. The drawer seat 5 is provided with a sliding rail 52, as shown in Figure 2 , the coil framework 11 is provided with a sliding groove 6, the sliding groove 6 is slidably connected with the sliding rail 52, and the movement of the electromagnetic unit 10 inserted into the drawer seat 5 is guided.

[0104] Specifically, the sliding groove 6 is arranged on the clamping part 112 of the coil assembly 1, the sliding groove 6 is defined between the first mounting part 32 and the bottom plate 31 of the fixing assembly 3, and the sliding grooves 6 of the two are slidably connected with the sliding rail 52. Further, the inner wall of the sliding groove 6 is provided with a curved structure, the curved structure is in frictional contact with the surface of the sliding rail 52, the contact area during sliding can be reduced, the friction force can be reduced, and the coil and the fixing assembly 3 can be conveniently slid into the base at the same time.

[0105] As shown in Figure 2 , the box body 124 of the wire box 12 is provided with a slot 1242 which is plugged with one end of the sliding rail 52. When the electromagnetic unit 10 is inserted into the base in the first direction, one end of the sliding rail 52 can be inserted into the slot 1242, so as to limit the displacement of the coil assembly 1 in the vertical direction (i.e. the third direction) caused by the electromagnetic attraction when the electromagnetic coil is energized.

[0106] Embodiment two

[0107] Based on the same inventive concept as embodiment one, as shown in Figures 8 to 14 , the embodiment provides an electromagnetic system which is different from the electromagnetic system provided by embodiment one.

[0108] Referring to Figure 8 and Figure 9The electromagnetic system provided by the embodiment comprises an electromagnetic unit 10 and a drawer seat 5, the electromagnetic unit 10 is inserted into the insertion space 51 of the drawer seat 5 along a first direction. In combination with Figure 10 The electromagnetic unit 10 comprises a coil assembly 1 and a core assembly 2, the coil assembly 1 comprises a coil framework 11, a coil box 12, a cover 13 and a circuit board electrically connected with the electromagnetic coil wound on the coil framework 11.

[0109] In combination with Figure 10 And Figure 11 The coil box 12 is provided with a first installation groove 126 and a second installation groove 127; the bottom wall of the first installation groove 126 is provided with a second clamping hole 128 and a through hole 129; the coil framework 11 comprises a winding part 111 and a first clamping buckle 1121 connected to the bottom of the winding part 111, the winding part 111 is arranged in the first installation groove 126 and is clamped with the second clamping hole 128 through the first clamping buckle 1121, the end of the winding part 111 covers the slot of the first installation groove 126, the core assembly 2 is arranged in the coil framework 11 through the through hole 129; the circuit board is arranged in the second installation groove 127, the cover 13 is buckled on the coil box 12 and covers the slot of the second installation groove 127; the cover 13 abuts against the end of the winding part 111.

[0110] The electromagnetic system provided by the embodiment, by arranging the coil box 12 with the first installation groove 126 and the second installation groove 127, the coil framework 11 is arranged in the first installation groove 126 and is clamped with the coil box 12 through the first clamping buckle 1121, so that the stable connection of the coil framework 11 and the coil box 12 can be realized. The circuit board is arranged in the second installation groove 127 and is limited in the second installation groove 127 by buckling the cover 13 on the slot of the second installation groove 127. Since the cover 13 abuts against the end of the coil framework 11 covering the slot of the first installation groove 126, the appearance quality of the opening position of the whole coil box 12 is better. In addition, since the first clamping buckle 1121 is connected to the bottom of the winding part 111, the space for winding the electromagnetic coil is not occupied, which is beneficial to controlling the volume of the coil framework 11.

[0111] As shown in Figure 12 The bottom of the coil box 12 is provided with a thickened boss 1220, the second clamping hole 128 penetrates through the thickened boss 1220, and the first clamping buckle 1121 is hooked on the thickened boss 1220. By arranging the thickened boss 1220, the strength of the coil box 12 at the position of the second clamping hole 128 can be enhanced, so that deformation at this position after clamping with the first clamping buckle 1121 is avoided.

[0112] As shown in Figure 10 And Figure 11As shown, the cover 13 is provided with a third buckle 134, the wire box 12 is provided with a third clamping hole 1230 communicated with the second mounting slot 127, the third buckle 134 is clamped in the third clamping hole 1230, the installation is convenient, and the connection firmness of the cover 13 on the wire box 12 can be ensured.

[0113] As shown in Figure 10 and Figure 13 , the electromagnetic system further comprises a fixing assembly 3, the fixing assembly 3 in the embodiment comprises a plurality of fixing members 34. The fixing member 34 comprises a second mounting portion 341 and a second buckle 342 connected with each other, the second mounting portion 341 is detachably connected with the iron core assembly 2, realizing the installation of the iron core assembly 2 and the fixing member 34; the second buckle 342 is hooked on the wire box 12, so that the fixing member 34 can fix the iron core assembly 2 and the wire box 12. Further, at least one second buckle 342 can hook the cover 13 to limit the cover 13 from moving away from the second mounting slot 127, improving the installation firmness of the cover 13 on the wire box 12.

[0114] Specific to the embodiment, referring to Figure 14 , the second mounting portion 341 is provided with a second fixing hole 3410, the second fixing hole 3410 is used for penetrating the limiting support shaft sleeve 4, after the support shaft sleeve 4 is inserted into the second fixing hole 3410, the fixing member 34 is close to the iron core assembly 2, the support shaft sleeve 4 is aligned with the mounting shaft 22 on the iron core body 21 and is inserted and connected, and at the same time the wire box 12 is hooked by the second buckle 342. Further, the second mounting portion 341 movably connects with a lock catch assembly 35, in combination with Figure 9 , the drawer seat 5 is provided with a lock hole 53, the lock catch assembly 35 has a locking position of inserting into the lock hole 53 and an unlocking position of separating from the lock hole 53, realizing the detachable connection of the electromagnetic unit 10 and the drawer seat 5.

[0115] As shown in Figure 14 , the second mounting portion 341 is provided with a partition plate 3411 and an embedding groove 3412, the partition plate 3411 separates the second fixing hole 3410 and the embedding groove 3412, and the lock catch assembly 35 is movably arranged in the embedding groove 3412, so that the second fixing hole 3410 and the embedding groove 3412 are reasonably distributed on the fixing member 34.

[0116] The lock catch assembly 35 comprises a locking member 351 and an elastic member 352 located in the embedding groove 3412, the elastic member 352 is telescopically arranged between the bottom wall of the embedding groove 3412 and the locking member 351, and the locking member 351 can be moved from the unlocking position to the locking position under the elastic force of the elastic member 352, so that the disassembly of the fixing member 34 and the base is more convenient. Further, one end of the locking member 351 is located in the embedding groove 3412 and is provided with a stop buckle, which is hooked and matched with the inner wall of the embedding groove 3412, preventing the locking member 351 from coming out of the embedding groove 3412.

[0117] As Figure 13 And Figure 14 As shown in the drawings, the second mounting portion 341 is provided with a limiting plate 343 spaced from the second buckle 342, the limiting plate 343 abuts against the core body 21, the core body 21 is provided with a connecting shaft 23, the limiting plate 343 is provided with an avoiding gap 3431 for avoiding the connecting shaft 23, and the limiting plate 343, the outer wall of the second mounting portion 341 and the second buckle 342 form a limiting space 344. The junction box 12 is partially clamped in the limiting space 344 to be clamped with the second buckle 342. The avoiding gap 3431 can prevent the junction box 12 from contacting the connecting shaft 23 to reduce the installation stability. The junction box 12 is partially clamped in the limiting space 344 to effectively improve the connection stability of the junction box 12 and the fixing assembly 3.

[0118] Further, the junction box 12 is provided with a clamping gap 1210 for clamping the cantilever of the second buckle 342 to improve the clamping stability.

[0119] Embodiment three

[0120] The embodiment provides a contactor, which comprises a contactor shell and the electromagnetic system as any one of the above embodiments, and the electromagnetic system is installed in the contactor shell. The contactor with the electromagnetic system has the beneficial effects as described above.

[0121] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. Electromagnetic system, characterized in that, The coil assembly (1), the core assembly (2) and the fixing assembly (3) are included. The coil assembly (1) includes a coil framework (11) including a winding part (111) and a clamping part (112) connected to each other; the winding part (111) has a winding groove (110), and the clamping part (112) is located outside the winding groove (110); The core assembly (2) is connected with the fixing assembly (3) and penetrates the coil framework (11); The clamping part (112) is clamped in the fixing assembly (3), so that the core assembly (2) is partially limited between the winding part (111) and the fixing assembly (3).

2. The electromagnetic system of claim 1, wherein, The fixing assembly (3) includes a bottom plate (31) and a first mounting part (32) provided on the bottom plate (31), and the core assembly (2) is connected to the first mounting part (32), and the core assembly (2) is partially limited between the winding part (111) and the bottom plate (31); One of the clamping part (112) and the bottom plate (31) is provided with a first buckle (1121), and the other of the clamping part (112) and the bottom plate (31) is provided with a first clamping hole (311), and the first buckle (1121) is clamped in the first clamping hole (311).

3. The electromagnetic system of claim 2, wherein, The core assembly (2) includes a core body (21) and a mounting shaft (22) penetrating the core body (21), and the first mounting part (32) is arranged at both ends of the mounting shaft (22) correspondingly; The first mounting part (32) is provided with a through hole (321) and a limiting through hole (322) in communication, the mounting shaft (22) passes through the through hole (321) into the limiting through hole (322) along the radial direction thereof, and the fixing assembly (3) further includes a support (33) which is inserted into the limiting through hole (322) along the axial direction of the mounting shaft (22); the support (33) is provided with a first fixing hole (331), a support shaft sleeve (4) is inserted into the first fixing hole (331), and the support shaft sleeve (4) is sleeved with the end of the mounting shaft (22).

4. The electromagnetic system of claim 2, wherein, The coil assembly (1) further includes a wire box (12) and a circuit board; The coil framework (11) is located outside the wire box (12), the circuit board is located in the wire box (12), an electromagnetic coil is wound on the coil framework (11), the electromagnetic coil is electrically connected with the circuit board, and the wire box (12) is detachably connected with the bottom plate (31).

5. The electromagnetic system of claim 2, wherein, The bottom plate (31) is provided with a positioning groove (313), the first clamping hole (311) penetrates the bottom wall of the positioning groove (313), and the clamping part (112) is partially located in the positioning groove (313); And / or, a containing groove (314) is recessed on the side of the bottom plate (31) away from the core assembly (2), the containing groove (314) is communicated with the first clamping hole (311), and the first buckle (1121) is hooked in the containing groove (314).

6. An electromagnetic system, characterized in that The coil assembly (1) comprises a coil skeleton (11), a coil box (12), a cover (13) and a circuit board electrically connected with an electromagnetic coil wound on the coil skeleton (11); The coil box (12) is provided with a first mounting groove (126) and a second mounting groove (127); the bottom wall of the first mounting groove (126) is provided with a second clamping hole (128) and a through hole (129); The coil skeleton (11) comprises a winding part (111) for winding the electromagnetic coil and a first buckle (1121) connected to the bottom of the winding part (111); the winding part (111) is arranged in the first mounting groove (126) and is clamped with the second clamping hole (128) through the first buckle (1121); the end of the winding part (111) covers the slot of the first mounting groove (126); the core assembly (2) is arranged in the coil skeleton (11) through the through hole (129); The circuit board is arranged in the second mounting groove (127); the cover (13) is clamped on the coil box (12) and covers the slot of the second mounting groove (127); the cover (13) abuts against the end of the winding part (111).

7. The electromagnetic system of claim 6, wherein, The coil box (12) is provided with a thickened boss (1220); the second clamping hole (128) penetrates through the thickened boss (1220); the first buckle (1121) is hooked on the thickened boss (1220); And / or, the electromagnetic system further comprises a plurality of fixing members (34), the fixing member (34) comprises a second mounting part (341) and a second buckle (342) connected with each other; the second mounting part (341) is detachably connected with the core assembly (2); the second buckle (342) is hooked on the coil box (12); at least one second buckle (342) can hook the cover (13) to limit the movement of the cover (13) away from the second mounting groove (127); And / or, the cover (13) is provided with a third buckle (134); the coil box (12) is provided with a third clamping hole (1230) communicating with the second mounting groove (127); the third buckle (134) is clamped in the third clamping hole (1230).

8. The electromagnetic system of any of claims 1-7, wherein, The inner hole of the coil skeleton (11) is provided with a limiting rib (113) on the hole wall opposite in the first direction; the inner hole of the coil skeleton (11) is provided with an avoiding groove (114) on the hole wall opposite in the second direction; the avoiding groove (114) is provided with a limiting plane (115) on both sides; The core assembly (2) comprises a core body (21) and a connecting shaft (23) penetrating through the core body (21); the avoiding groove (114) is used for avoiding the end of the connecting shaft (23); the limiting rib (113) and the limiting plane (115) abut against the core body (21); The first direction and the second direction are arranged at an angle.

9. The electromagnetic system of any of claims 1-7, wherein, The electromagnetic system further comprises a drawer seat (5) provided with an insertion space (51) for inserting the coil assembly (1) and the core assembly (2); A slide rail (52) is arranged in the drawer seat (5), and a slide groove (6) is arranged on the coil framework (11), and the slide groove (6) is slidably matched with the slide rail (52).

10. A contactor characterized by, An electromagnetic system as claimed in any one of claims 1-9, wherein the electromagnetic system is mounted in a contactor housing.

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