Onboard inductor, electrical assembly and electrical cabinet

Abstract

The utility model discloses an on-board inductor, an electrical assembly and an electrical chassis, the on-board inductor is suitable for being installed on a circuit board, and the on-board inductor comprises a pedestal used for being installed on the circuit board; the inductor assembly comprises a magnetic core and a coil, the magnetic core is fixedly connected to the base, and the coil is wound on a winding part of the magnetic core; the blocking piece comprises a supporting column and an insulating partition plate, the bottom end of the supporting column is fixedly connected to the base, and the insulating partition plate is fixedly arranged on the supporting column and located above the coil; on a projection plane perpendicular to the vertical direction, the projection of the coil falls into the projection of the insulating partition plate. The on-board inductor can increase the insulation distance between the on-board inductor and the case body, so that the electrical case meets the safety requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of on-board inductance, and specifically relates to an on-board inductance, an electrical assembly and an electrical cabinet. BACKGROUND

[0002] In the electrical industry, electrical accessories are generally installed in a cabinet to form an electrical cabinet that is convenient to move and install. Generally, a circuit board is provided in the electrical cabinet, and electrical elements such as resistors, inductors and capacitors are provided on the circuit board. In order to provide a large current and a high inductance, a wire-wound on-board inductor is used on the circuit board. The wire-wound on-board inductor generally includes an insulating base, a magnetic core and a coil, the coil is wound on the magnetic core, the magnetic core is fixedly installed on the insulating base, and the insulating base is fixed to the circuit board. In actual application, due to the miniaturization requirement of the electrical cabinet or the setting of reinforcing ribs on the inner wall of the electrical cabinet, the insulation distance between the on-board inductor and the cabinet of the electrical cabinet is too short, which does not meet the safety requirements. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects or problems in the background art, and provides an on-board inductor, an electrical assembly and an electrical cabinet, the on-board inductor can increase the insulation distance with the cabinet, so that the electrical cabinet meets the safety requirements.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Technical scheme one: an on-board inductor suitable for being installed to a circuit board, comprising: a base for being installed to the circuit board; an inductor assembly comprising a magnetic core and a coil, the magnetic core is fixedly connected to the base, and the coil is wound on the winding part of the magnetic core; a barrier piece comprising a support and an insulating partition plate, the bottom end of the support is fixedly connected to the base, and the insulating partition plate is fixedly arranged on the support and located above the coil; on the projection plane perpendicular to the up-down direction, the projection of the coil falls within the projection of the insulating partition plate.

[0006] Technical scheme two based on technical scheme one: corresponding to one winding part, the barrier piece is provided with two supports on the left side and the right side of the winding part in the front-back direction, and the top of each support is connected with the insulating partition plate.

[0007] Technical scheme three based on technical scheme two: among the four supports corresponding to the same winding part, the two supports located at the front position and the two supports located at the rear position are connected along the left-right direction through a connecting part.

[0008] Technical scheme four based on technical scheme three: the connecting part is located below the magnetic core.

[0009] Based on the technical solution three, the technical solution five is that, among the four pillars corresponding to the same winding part, the two pillars located at the front position and the two pillars located at the rear position are both matched with the winding part to form a ventilation opening located above the magnetic core and corresponding to the position of the coil wound on the winding part and penetrating in the front-rear direction.

[0010] Based on the technical solution three, the technical solution six is that, in the inductance assembly, the magnetic core is provided with a plurality of winding parts arranged in the left-right direction, and each winding part corresponds to a coil wound thereon; and the insulating partition plate extends in the left-right direction to make the projection of each coil fall within the projection on the projection plane.

[0011] Based on the technical solution six, the technical solution seven is that, in the inductance assembly, the two ends of each winding part in the front-rear direction are connected by a magnetic core yoke extending in the left-right direction; and the pillars in the blocking piece are located between the two magnetic core yokes in the front-rear direction.

[0012] Based on the technical solution seven, the technical solution eight is that the bottom end of the pillar of the blocking piece is adhesively fixed to the base.

[0013] In addition, the present application also provides a technical solution nine, which is an electrical assembly comprising a circuit board, and further comprising the on-board inductance according to any one of the technical solutions one to eight, and the on-board inductance is mounted on the circuit board.

[0014] In addition, the present application also provides a technical solution ten, which is an electrical cabinet comprising a cabinet shell, and characterized in that the electrical assembly according to the technical solution nine is arranged in the cabinet shell.

[0015] From the above description of the present application, compared with the prior art, the present application has the following beneficial effects:

[0016] The technical solution one provides an on-board inductance, which comprises a base, an inductance assembly and a blocking piece. The blocking piece comprises a pillar and an insulating partition plate. The bottom end of the pillar is fixedly connected to the base. The insulating partition plate is connected to the pillar and located above the coil of the inductance assembly, and the projection of the coil on the projection plane perpendicular to the up-down direction falls within the projection of the insulating partition plate. That is to say, the insulating partition plate completely covers the coil of the inductance assembly, and at the same time, the blocking piece is connected to the base of the on-board inductance, so that the position of the insulating partition plate is fixed and not prone to shaking. When the on-board inductance is mounted on the circuit board and the circuit board is mounted in the electrical cabinet, even if the distance between the on-board inductance and the cabinet shell of the electrical cabinet is very close, since the insulating partition plate blocks between the coil and the cabinet shell, the insulation distance between the coil and the cabinet shell is increased, so that the insulation distance between the coil of the on-board inductance and the cabinet shell can meet the safety requirements.

[0017] In the second technical solution, the support posts are arranged around each winding part, the top of the support post is connected with the insulating partition plate, the insulating partition plate has more support points connected with the base, the stability of the position of the insulating partition plate and the firmness of the whole blocking piece are improved, the support posts are arranged at the positions around the winding part, before the magnetic core is fixed to the base, the position of the magnetic core can be limited by the support posts, the magnetic core is prevented from moving in the horizontal direction, and the magnetic core is conveniently locked and fixed. In this way, the support posts in the technical solution not only support the partition plate, but also limit the movement of the magnetic core, so that the structure of the inductor is more compact and the cost is lower.

[0018] In the third technical solution, the connecting part is arranged between the support posts adjacent in the left-right direction, the adjacent support posts are connected into one by the connecting part, and the firmness of the whole blocking piece is further improved.

[0019] In the fourth technical solution, the connecting part is arranged below the magnetic core, and the magnetic core and the blocking piece are conveniently interfered during installation.

[0020] In the fifth technical solution, the ventilation opening is formed between the support posts adjacent in the left-right direction, the range of the ventilation opening corresponds to the coil, the coil can be cooled by the cooling fan, and the blocking piece can avoid affecting the cooling of the coil.

[0021] In the sixth technical solution, the inductor assembly is provided with a plurality of winding parts, each winding part is wound with a coil, and the insulating partition plate covers each coil, so that good blocking effect between the on-board inductor and the case shell is ensured.

[0022] In the seventh technical solution, the support post of the blocking piece is arranged between the magnetic core yokes, only part of the coil is insulated and blocked, the magnetic core of the on-board inductor can be exposed, the inductor assembly is conveniently cooled, the magnetic core is limited by the support post of the blocking piece, the movement of the magnetic core is avoided, and the magnetic core is conveniently fixed.

[0023] In the eighth technical solution, the bottom end of the support post of the blocking piece is adhesively fixed to the base, and the blocking piece is conveniently installed.

[0024] The ninth technical solution provides an electrical assembly, which comprises a circuit board, and the on-board inductor described above is installed on the circuit board, the insulation distance between the coil and the case shell is increased by the on-board inductor, and the electrical case with the electrical assembly can meet the safety requirements.

[0025] The tenth technical solution provides an electrical case, which comprises a case shell, and the electrical assembly described above is installed in the case shell, the insulation distance between the coil and the case shell is increased by the on-board inductor in the electrical assembly, and the electrical case can meet the safety requirements. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 It is an exploded schematic view of the structure of the on-board inductor involved in the embodiments of the present application.

[0028] Figure 2 It is a schematic view of the structure of the on-board inductor involved in the embodiments of the present application.

[0029] Figure 3 It is Figure 2 It is a left view of the on-board inductor.

[0030] Figure 4 It is a schematic view of the structure of the electrical assembly involved in the embodiments of the present application.

[0031] Figure 5 It is a schematic view of the structure of the electrical cabinet involved in the embodiments of the present application.

[0032] Main figure mark explanation:

[0033] Base 1; inductor assembly 2; magnetic core 3; coil 4; winding part 5; barrier 6; support column 7; insulating partition plate 8; connecting part 9; ventilation opening 10; magnetic core yoke 11; circuit board 12; cabinet shell 13. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as exclusion of other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the claim, description and above drawings of the present application, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0036] In the claims, the specification, and the drawings of the present application, terms such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like indicate directions or positional relationships based on the directions and positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the specific protection scope of the present application.

[0037] In the claims, the specification, and the drawings of the present application, unless otherwise explicitly defined, the term "fixedly connected" or "fixedly connected" should be understood in a broad sense, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0038] In the claims, the specification, and the drawings of the present application, the terms "include", "have" and their variants are intended to mean "contain but not limited to".

[0039] The embodiment of the present application relates to a kind of on-board inductance, which is suitable for being installed to circuit board 12, referring to Figure 1 The on-board inductance includes base 1, inductance component 2 and barrier piece 6.

[0040] Referring to Figure 1 In the on-board inductance, base 1 is used to install to circuit board 12;Inductance component 2 includes magnetic core 3 and coil 4, the magnetic core 3 is fixedly connected to the base 1, the coil 4 is wound on the winding portion 5 of the magnetic core 3;Barrier piece 6 includes support 7 and insulating partition 8, the bottom end of the support 7 is fixedly connected to the base 1, the insulating partition 8 is fixedly arranged on the support 7 and located above the coil 4;Wherein, on the projection plane perpendicular to the up-down direction, the projection of the coil 4 falls within the projection of the insulating partition 8.

[0041] And, corresponding to one winding portion 5, the barrier piece 6 is spaced apart in the left side and the right side of the winding portion 5, and is spaced apart in the front and rear directions, and the top of each support 7 is connected with the insulating partition 8. Among the four supports 7 corresponding to the same winding portion 5, between the two supports 7 located in the front position and between the two supports 7 located in the rear position, are connected along the left and right directions by connecting portion 9. Wherein, connecting portion 9 is located below the magnetic core 3.

[0042] Referring to Figure 1, the base 1 is a plate-like component with through holes that run through it vertically and horizontally, facilitating the fixation of the base 1 to the circuit board 12 by means of welding, screwing, or other suitable methods. Among them, the base 1 is made of insulating material, and the materials that can be selected include epoxy resin, etc.

[0043] Refer to Figure 1 , the inductor component 2 includes a magnetic core 3 and a coil 4. In this embodiment, the magnetic core 3 of the inductor component 2 has a plurality of the winding portions 5 arranged at intervals in the left-right direction. Each of the winding portions 5 is wound with a corresponding coil 4, and the winding portions 5 are connected by a magnetic core yoke 11 extending in the left-right direction. Generally speaking, the magnetic core 3 in this inductor component 2 forms a configuration shaped like the Chinese character 'Ri' (日). The two long strips extending in the left-right direction are the magnetic core yokes 11, and the three short strips extending in the front-back direction are the winding portions 5. The coil 4 can be wound around each of the winding portions 5, and the two lead-out ends of the coil 4 wound on each winding portion 5 can extend out through the corresponding holes on the base 1 and be extended and connected to the corresponding terminals on the circuit board 12.

[0044] Refer to Figure 1 , the barrier member 6 includes a support pillar 7 and an insulating partition 8. The support pillar 7 is used to connect to the base 1 and support the insulating partition 8, and the insulating partition 8 is used to cover the coil 4 of the inductor component 2 to increase the insulation distance between the coil 4 and the chassis housing 13, enabling the electrical chassis with this on-board inductor to meet the safety regulations requirements. In this embodiment, the bottom end of the support pillar 7 of the barrier member 6 is adhesively fixed to the base 1. In other embodiments, the bottom end of the support pillar 7 of the barrier member 6 can be fixedly connected by means of welding, interference fit, etc. Alternatively, the support pillar 7 of the barrier member 6 can be integrally formed with the base 1, and then the insulating partition 8 is fixed to the top of the support pillar 7. In the barrier member 6, at least the insulating partition 8 should be made of insulating material. Further, the entire barrier member 6 can be made of insulating material, and the materials that can be selected include epoxy resin, etc. Moreover, the material of the barrier member 6 is preferably the same as that of the base 1 to facilitate the firm adhesion of the support pillar 7 of the barrier member 6 to the base 1.

[0045] It is easy to understand that the expression that the projection of the above-mentioned coil 4 falls within the projection of the insulating partition 8 means that the insulating partition 8 completely covers the coil 4 in the circumferential direction. Regardless of whether the insulating partition 8 is skewed or the shape of the insulating partition 8 itself is regular, when observing this on-board inductor from a top view angle, it is impossible to observe the coil 4 in the inductor component 2越过阻隔件6观察到电感组件2中的线圈4.

[0046] In the case that the magnetic core 3 in the inductor assembly 2 has only one winding portion 5 and only one coil 4, the blocking piece 6 can be provided with a support 7 at a specific position on the circumferential side of the winding portion 5 corresponding to the winding portion 5, and preferably, an up-and-down extending support 7 can be arranged at the front left position, the front right position, the back left position and the back right position of the winding portion 5, respectively, and the area defined by the four supports 7 can substantially coincide with the range of the coil 4 wound on the winding portion 5. On this basis, an insulating partition plate 8 is arranged on the top of the four supports 7, and the insulating partition plate 8 is supported at the four corner positions, so that the insulating partition plate 8 can completely cover the coil 4, and ensure that the insulation distance between the coil 4 and the case 13 meets the regulatory requirements. Moreover, the supports are arranged at the four positions around the winding portion, and before the magnetic core is fixed to the base, the position of the magnetic core can also be limited by the supports, so that the magnetic core cannot move in the horizontal direction, and the magnetic core can be conveniently locked and fixed.

[0047] Meanwhile, the two supports 7 adjacent in the left-right direction are also connected by a connecting portion 9, and the connecting portion 9 is located below the magnetic core 3. The connecting portion 9 can be integrally formed with the two supports 7 connected thereto, so that the two supports 7 and the connecting portion 9 connecting the two supports 7 form an integral whole. By providing the connecting portion 9, the connection between the two supports 7 adjacent in the left-right direction is more stable.

[0048] Referring to Figure 2 In the present embodiment, the magnetic core 3 of the inductor assembly 2 is provided with three winding portions 5, and correspondingly, there should be three groups of supports 7, and each group of supports 7 includes four supports 7. In actual application, two supports 7 belonging to two adjacent winding portions 5 and adjacent in the left-right direction can be combined into one larger support 7. Moreover, the support 7 on the front side and the connecting portion 9 can be integrally formed, and the support 7 on the back side and the connecting portion 9 can also be integrally formed, thereby forming two independent support structures, and the support structure can more stably support the insulating partition plate 8.

[0049] Referring to Figure 2 and Figure 3 The supports 7 in the blocking piece 6 are located between the two magnetic core yokes 11 in the front-back direction, and only insulate and block part of the coil 4, so that the magnetic core 3 of the on-board inductor can be exposed, and the inductor assembly 2 can be conveniently cooled. Meanwhile, the supports of the blocking piece are used to limit the position of the magnetic core, so that the magnetic core cannot move, and the magnetic core can be conveniently fixed.

[0050] Referring to Figure 2As one aspect of the on-board inductor involved in the embodiment, the insulating partition plate 8 extends along the left-right direction to make the projection of each coil 4 fall within its projection on the projection plane, so that all the coils 4 on the on-board inductor can have good blocking effect through the insulating partition plate 8.

[0051] In addition, with reference to Figure 2 Among the four posts 7 corresponding to the same winding portion 5, between the two posts 7 at the front position and between the two posts 7 at the rear position, a ventilation opening 10 is formed above the magnetic core 3 and penetrates the coils 4 wound on the winding portion 5 in the front-rear direction. After assembly, a gap is formed between the two adjacent posts 7 in the left-right direction, and the winding portion 5 is located in the gap. The upper surface of the winding portion 5 and the opposite side surfaces of the two posts 7 cooperate to form a ventilation opening 10. When the air supply direction of the cooling fan is opposite to the ventilation opening 10, the air flow can pass through the ventilation opening 10 and take away the heat of the coils 4.

[0052] The on-board inductor involved in the embodiment includes a base 1, an inductor assembly 2, and a blocking member 6. The blocking member 6 includes a post 7 and an insulating partition plate 8. The bottom end of the post 7 is fixedly connected to the base 1. The insulating partition plate 8 is connected to the post 7 and located above the coils 4 of the inductor assembly 2. The projection of the coils 4 on the projection plane perpendicular to the up-down direction falls within the projection of the insulating partition plate 8, that is, the insulating partition plate 8 completely covers the coils 4 of the inductor assembly 2. The blocking member 6 is connected to the base 1 of the on-board inductor, so that the position of the insulating partition plate 8 is fixed and not easy to shake. When the on-board inductor is installed on the circuit board 12, and the circuit board 12 is installed in the electrical cabinet, even if the distance between the on-board inductor and the cabinet shell 13 of the electrical cabinet is very close, because the insulating partition plate 8 blocks between the coils 4 and the cabinet shell 13, the insulation distance between the coils 4 and the cabinet shell 13 is increased, so that the insulation distance between the coils 4 of the on-board inductor and the cabinet shell 13 can meet the safety requirements.

[0053] In addition, the utility model embodiment still relates to an electrical assembly, with reference to Figure 4 The electrical assembly includes a circuit board 12 and the on-board inductor described in the above embodiment, and the on-board inductor is installed on the circuit board 12. The insulation distance between the coils 4 and the cabinet shell 13 can be increased through the on-board inductor, so that the electrical cabinet using the electrical assembly can meet the safety requirements.

[0054] In addition, the utility model embodiment still relates to an electrical cabinet, with reference to Figure 5The electrical cabinet comprises a cabinet shell 13 and the electrical assembly described in the above embodiments. The insulation distance between the coil 4 and the cabinet shell 13 can be increased by the on-board inductance in the electrical assembly, so that the electrical cabinet can meet the regulatory requirements.

[0055] The above description and embodiment are used to explain the scope of protection of the present application, but do not constitute a limitation on the scope of protection of the present application. Through the inspiration of the present application or the above embodiment, those skilled in the art can obtain the modification, equivalent replacement or other improvement of the present application embodiment or one part of the technical features by combining the common knowledge, the ordinary technical knowledge in the art and / or the prior art through logical analysis, reasoning or limited test, which should be included in the protection scope of the present application.

Claims

1. A board mounted inductor adapted to be mounted to a circuit board (12), characterized by, The inductor assembly (2) comprises a magnetic core (3) and a coil (4), the magnetic core (3) is fixed to the base (1), and the coil (4) is wound on the winding part (5) of the magnetic core (3). The inductor assembly (2) comprises a magnetic core (3) and a coil (4), the magnetic core (3) is fixed to the base (1), and the coil (4) is wound on the winding part (5) of the magnetic core (3). The barrier piece (6) comprises a support column (7) and an insulating partition plate (8), the bottom end of the support column (7) is fixed to the base (1), and the insulating partition plate (8) is fixed to the support column (7) and located above the coil (4). In the projection plane perpendicular to the up-down direction, the projection of the coil (4) falls within the projection of the insulating partition plate (8). Corresponding to one of the winding parts (5), two support columns (7) are arranged on the left and right sides of the winding part (5) in the front-back direction, and the top of each support column (7) is connected with the insulating partition plate (8).

2. An on-board inductor as claimed in claim 1, wherein the magnetic core is formed from a material having a relative magnetic permeability of at least 1000. Among the four support columns (7) corresponding to the same winding part (5), the two support columns (7) located in the front position and the two support columns (7) located in the rear position are connected through a connecting part (9) in the left-right direction.

3. An on-board inductor as claimed in claim 2, wherein the first and second conductive layers are formed of a conductive material selected from the group consisting of copper, aluminum, silver, gold, and combinations thereof. The connecting part (9) is located below the magnetic core (3).

4. An onboard inductor as described in claim 3, characterized in that, Among the four support columns (7) corresponding to the same winding part (5), the two support columns (7) located in the front position and the two support columns (7) located in the rear position are connected through a connecting part (9) in the left-right direction.

5. An onboard inductor as described in claim 3, characterized in that, In the inductor assembly (2), the magnetic core (3) is provided with a plurality of winding parts (5) arranged in the left-right direction, and each winding part (5) corresponds to a coil (4) wound thereon; the insulating partition plate (8) extends in the left-right direction to make the projection of each coil (4) fall within its projection in the projection plane.

6. An onboard inductor as described in claim 3, characterized in that, In the inductor assembly (2), the two ends of each winding part (5) in the front-back direction are connected through a magnetic core yoke (11) extending in the left-right direction; and the support column (7) of the barrier piece (6) is located between the two magnetic core yokes (11) in the front-back direction.

7. An onboard inductor as described in claim 6, characterized in that, The bottom end of the support column (7) of the barrier piece (6) is adhesively fixed to the base (1).

8. A board inductor as claimed in claim 7, wherein the board inductor is formed by a plurality of turns of a conductor on the board. The inductor assembly (2) comprises a magnetic core (3) and a coil (4), the magnetic core (3) is fixed to the base (1), and the coil (4) is wound on the winding part (5) of the magnetic core (3).

9. An electrical assembly comprising a circuit board (12), characterized by The inductor assembly (2) comprises a magnetic core (3) and a coil (4), the magnetic core (3) is fixed to the base (1), and the coil (4) is wound on the winding part (5) of the magnetic core (3).

10. An electrical cabinet comprising a cabinet housing (13), characterized in that ​

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