CN209343920U - Coil component - Google Patents

Abstract

The utility model provides a kind of coil component that can be installed on circuit board comprising: coil is equipped with around resistance part and from the winding leading-out wire drawn around resistance part；Terminal base, the lead for being equipped with the main part with insulating properties and being kept by main part.In addition, lead includes: bottom surface side terminal, it is prominent from the bottom surface of the main part opposite with circuit board, and can be connect with circuit board；Side side terminal, it is prominent from the side of main part to the direction different from the projected direction of bottom surface side terminal, and connect with the end of winding leading-out wire.The insulation distance between overhang and circuit board that the coil component of the utility model can ensure to connect with side side terminal.

Description

Coil component

Technical field

The utility model relates to a kind of coil components.

Background technique

In the coil components such as reactor or transformer, including the mode structure can be directly mounted on the circuit board of circuit At coil component.In this coil component, use use the lead of CP line (copper covered steel wire) etc. as coil component with it is electric Electric wiring between the plate of road.

A kind of circuit board-mounted type is disclosed in Japanese Unexamined Patent Publication 2004-79573 bulletin (Japanese Unexamined Patent Publication) Coil component (common mode choke coil, common mode choke coil), have coiling is set in a manner of implantation The lead terminal of frame (bobbin).The end of winding winds and is brazed in the root of conductor terminal.In addition, the front end of conductor terminal Portion is inserted into the through-hole of printed circuit board, and is brazed in printed circuit board.Coil component is capable of fixing in printed circuit as a result, Plate is simultaneously electrically connected.

Utility model content

In the common mode choke coil that Japanese Unexamined Patent Publication 2004-79573 bulletin is recorded, lead terminal is planted in bobbin winder bracket The end of bottom surface, winding is wound in conductor terminal in the bottom surface side of bobbin winder bracket.Therefore, when in order to coil component is mounted on printing Circuit board and by lead terminal insertion printed circuit board through-hole when, the end of printed circuit board and winding closely configures, because There is the insulation distance that cannot ensure printed circuit board and winding in this, what is leaked electricity from winding to the wiring of printed circuit board can It can property.

The utility model is to complete in view of the foregoing, it is intended that providing one kind can ensure that circuit board and line The coil component of the insulation distance of the end of circle.

One embodiment of the utility model provides a kind of coil component that can be installed on circuit board comprising: line Circle is equipped with around resistance part and from the winding leading-out wire drawn around resistance part；And terminal base, be equipped with insulating properties main part and The lead kept by main part.In addition, lead includes bottom surface side terminal, it is prominent from the bottom surface of the main part opposite with circuit board Out, it and can be connect with circuit board；Side side terminal, from the side of main part to different from the projected direction of bottom surface side terminal Direction it is prominent, and connect with the end of winding leading-out wire.

In addition, being also possible to side side terminal has the folding to turn back to side in an embodiment of the utility model The portion of returning, the end portion of the being folded back grasping of winding leading-out wire.

In addition, being also possible to the front end and main part in the folded-back part of lead in an embodiment of the utility model Side between be provided with gap.

In addition, being also possible to winding leading-out wire is with using aluminium as principal component in an embodiment of the utility model Core wire covering thread, in the end of winding leading-out wire, the coating of winding leading-out wire is stripped.In this case, coil device Part further includes the coating member for covering the end of winding leading-out wire.

In addition, being also possible to end and the side side terminal of winding leading-out wire in an embodiment of the utility model Connecting portion covered by coating member.

In addition, being also possible in an embodiment of the utility model in connecting portion, winding is drawn using soldering The end of line links together with side side terminal, and the end for being brazed on winding leading-out wire together is covered by coating member.

In addition, being also possible to the end of winding leading-out wire by side side terminal in an embodiment of the utility model Outer peripheral surface hook in the state of, be crossed as crosswise with side side terminal.

In addition, being also possible to terminal base with a plurality of leads, winding leading-out wire in an embodiment of the utility model End connect with a plurality of leads.

In addition, be also possible to main part in an embodiment of the utility model and be formed as one with lead, lead tool There is the bending section for the inside for being embedded in main part.

In addition, in an embodiment of the utility model, be also possible to bottom surface side terminal from bottom surface direction outstanding with Side side terminal is orthogonal from side direction outstanding.

In addition, in an embodiment of the utility model, be also possible to around resistance part relative to main body section in lead The opposite side of side side terminal projected direction outstanding, winding leading-out wire is routed by the bottom surface side of main part from around resistance part To side side terminal.

In addition, being also possible to be provided with and protrusion side in the bottom surface of main part in an embodiment of the utility model To parallel slot, winding leading-out wire is routed by slot.

In addition, the depth for being also possible to slot is bigger than the outer diameter of winding leading-out wire in an embodiment of the utility model.

In addition, it is also possible to the position that winding leading-out wire passes through in slot in an embodiment of the utility model, On the depth direction of slot, bottom surface side is more leaned on positioned at than side side terminal, or be located at height identical with side side terminal, even The end of the winding leading-out wire of socket part position is located at the opposite side of bottom surface side relative to side side terminal.

In addition, being also possible to opposite lateral bending of the side side terminal to bottom surface side in an embodiment of the utility model It is bent.

In addition, in an embodiment of the utility model, be also possible to winding portion be located at main part bottom surface it is opposite The face of side is routed to side from around resistance part from the winding leading-out wire drawn around resistance part by the opposite side of the bottom surface side of main part Terminal.

In addition, being also possible to the end phase of the winding leading-out wire of connecting portion in an embodiment of the utility model Bottom surface side is located at for side side terminal.

In addition, being also possible to side side terminal to bottom surface lateral bend in an embodiment of the utility model.

In the structure of the embodiments of the present invention, lead has from the main part of terminal base different side to each other To bottom surface side terminal outstanding and side side terminal, bottom surface side terminal is connect with circuit board, side side terminal and overhang Connection.Therefore, when coil component is mounted on circuit board, side side terminal can match in a manner of with circuit board interval It sets, it can be ensured that the insulation distance between overhang and circuit board being connect with side side terminal.

Detailed description of the invention

Fig. 1 is the stereoscopic figure of the coil component of the utility model first embodiment.

Fig. 2 is the stereoscopic figure of the coil component of the utility model first embodiment.

Fig. 3 is the exploded perspective view of the coil component of the utility model first embodiment.

Fig. 4 is the side view near the lead of the coil component of the utility model first embodiment.

Fig. 5 is the side view near the lead of the coil component of the utility model first embodiment.

Fig. 6 is another figure for indicating the bend mode of the lead of the utility model first embodiment.

Fig. 7 is the stereoscopic figure of the coil component of the utility model second embodiment.

Fig. 8 is the exploded perspective view of the coil component of the utility model second embodiment.

Fig. 9 is the side view near the lead of the coil component of the utility model second embodiment.

Figure 10 is the side view near the lead of the coil component of the utility model second embodiment.

Specific embodiment

In the following, illustrating the embodiments of the present invention referring to attached drawing.In addition, in the following description, to identical or right The element answered marks same or similar appended drawing reference, and the repetitive description thereof will be omitted.

(first embodiment)

Fig. 1 and Fig. 2 is the stereoscopic figure of the coil component 1 of the utility model first embodiment.Fig. 1 and Fig. 2 difference It is with the figure of the different same coil components 1 of view.Fig. 3 is the exploded perspective view of coil component 1.In addition, being saved in Fig. 3 The diagram of aftermentioned coating member 70 is omited.The coil component 1 of present embodiment is the electricity that can be mounted directly on circuit boards The reactor of road board-mounted type.

In the following description, the direction definition slave upper right in Fig. 1 gone down to the left be X-direction, will from upper left to The direction definition that bottom right is gone is Y direction, is Z-direction by the direction definition gone from bottom to top.In addition, for ease of description, X-axis positive direction is known as front, X-axis negative direction is known as rear.In addition, Y direction is known as left and right directions.In addition, by Z axis Positive direction is known as top, and Z axis negative direction is known as lower section.In addition, X-direction is the axial direction of aftermentioned coil 10.In addition, can also When using coil component 1, coil component 1 to be configured towards arbitrary direction.

Coil component 1 includes coil 10, bobbin winder bracket 20, magnetic core 30 and 2 terminal base 40.Coil component 1 is mounted on configuration In on the circuit board of the downside (Z axis negative direction side) of coil component 1.

The coil 10 of present embodiment by the outer peripheral surface covering in core wire 10A1 there is the coating 10A2 of insulating properties to form The covering threads 10A such as enameled wire formed.For lightweight and cost effective, core wire 10A1 is used using aluminium as the wire rod of principal component. Coil 10 includes covering thread 10A being wound in bobbin winder bracket 20 and what is formed draws around resistance part 11 and from the winding drawn around resistance part 11 Line 12.By its outer peripheral surface there is the guard block 13 of insulating properties to cover around resistance part 11.In the end 12A of each winding leading-out wire 12, The coating 10A2 of outer peripheral surface is stripped.The end 12A of each winding leading-out wire 12 is connect with aftermentioned lead 50.

Coil 10 is wound in the outer peripheral surface of the bobbin winder bracket 20 of tubular.Aftermentioned magnetic core is inserted into the hollow portion 21 of bobbin winder bracket 20 30 (center pillar) 31A.Bobbin winder bracket 20 is by such as phenol resin, epoxy resin, unsaturated polyester resin, polyurethane resin, BMC (Bulk Molding Compound, integrally formed premix), PPS (Polyphenylene Sulfide, polyphenylene sulfide), The material of the insulating properties such as PBT (Polybutylene Terephthalate, polybutylene terephthalate (PBT)) is formed.

The materials'use of magnetic core 30 has magnetic material (such as compressed-core, amorphous magnetic core, the silicon steel of high magnetic permeability Plate, nanocrystalline magnet core, FERRITE CORE etc.).As shown in figure 3, magnetic core 31 and I word of the magnetic core 30 of present embodiment by E shape The magnetic core 32 of shape is composed.With the center pillar 31A of magnetic core 31 by the hollow portion 21 of bobbin winder bracket 20, the center pillar 31A of magnetic core 31 it The mode that outer part and magnetic core 32 surround coil 10 configures.In addition, magnetic core 30 is not limited to the knot of present embodiment shown in Fig. 3 Structure.It is also possible to magnetic core 30 for example to form the core combination of 2 E shape.Alternatively, it is also possible to according to the type of coil component 1 Or the differences such as purposes, coil component 1 are not provided with magnetic core 30.

Each terminal base 40 (40A, 40B) is respectively provided with main part 41 (41A, 41B) and a plurality of is drawn by what main part 41 was kept Line 50 (50A, 50B).Each lead 50 is formed as one using injection molding and main part 41.2 terminal bases 40A, 40B exist respectively The front and back of bobbin winder bracket 20 is configured on front-rear direction.

The material of the materials'use insulating properties of main part 41.The material of main part 41 be for example phenolic resin, epoxy resin, Unsaturated polyester resin, urethane resin, BMC, PPS, PBT etc..In present embodiment, in order to reduce the part of coil component 1 Quantity, 2 main parts 41A, 41B and bobbin winder bracket 20 are formed as one.

Each lead 50 (50A, 50B) has the metal core wires such as iron wire, steel wire, copper wire.In the outer peripheral surface plating of core wire There are tin or the alloy comprising tin, so that the solder in ingredient comprising tin is easy to attach.Each lead 50 uses such as copper covered steel wire (CP Line).

Fig. 4 and Fig. 5 indicates the side being configured near the terminal base 40A in front (X-axis positive direction side) in coil component 1 Figure.Fig. 4 indicate lead 50A aftermentioned terminal 53A be bent before state, Fig. 5 indicate terminal 53A be bent after state.

Each lead 50A of terminal base 40A has the bending section 51A of embedment main part 41A and from main part 41A outstanding one To terminal (bottom surface side terminal 52A, side side terminal 53A).Bending section 51A is curved in such a way that both ends are respectively facing lower section and front 90 degree of folding.Bottom surface side terminal 52A (in the following, being denoted as " terminal 52A ") is drawn from the bottom surface 42A of main part 41A is outstanding downwards The one end (lower end) of line 50A.Bottom surface 42A becomes the circuit board with the downside (Z axis negative direction side) for being configured at main part 41A Opposite face.Side side terminal 53A (in the following, being denoted as " terminal 53A ") is from the front (X-axis positive direction side) of main part 41A The other end (front end) of side 43A lead 50A outstanding forwards.The projected direction of terminal 52A and the protrusion of terminal 53A Direction is orthogonal.

Each lead 50B of terminal base 40B has the bending section (not shown) of embedment main part 41B and dashes forward from main part 41B A pair of terminal 52B, 53B out.The bending section of lead 50B bends 90 degree in such a way that both ends are respectively facing below and rearward.End Sub- 52B be from the bottom surface 42B of the downside (Z axis negative direction side) of main part 41B downwards lead 50B outstanding one end (under End).Terminal 53B is from the another of the side 43B at the rear (X-axis negative direction side) of main part 41B rearward lead 50B outstanding One end (rear end).The projected direction of terminal 52B is orthogonal with the projected direction of terminal 53B.

In present embodiment, the bottom surface 42A of main part 41A is parallel with X/Y plane, and side 43A is parallel with YZ plane.In addition, The bottom surface 42B of main part 41B is parallel with X/Y plane, and side 43B is parallel with YZ plane.

In a pair of terminal 52A, 53A, the terminal 52A of the bottom surface side 42A insertion be set to circuit board (not shown) cut hole or Through-hole is simultaneously brazed together therewith.Coil component 1 is fixed on circuit board, and the wiring on each lead 50A and circuit board as a result, Connection.In lead 50A, the terminal 53A of the side side 43A is connect with the end 12A of winding leading-out wire 12.

A plurality of leads 50A and a plurality of leads 50B configure (Y-axis in left and right directions in a row in a manner of interval respectively Direction) on.Each main part 41A, 41B have the longer shape in left and right to keep a plurality of leads 50A, 50B.In each main part Bottom surface 42A, 42B of 41A, 41B are provided with the slot that (X-direction) extends along the longitudinal direction between adjacent lead 50A, 50B 44A,44B.Slot 44A, 44B is so that size (width) C1 (referring to Fig. 2) of its Y direction and the size (depth) of Z-direction The mode that C2 (referring to Fig. 4) is greater than the outer diameter D of winding leading-out wire 12 is formed.

Terminal base 40A in front passes through one of slot 44A from each winding leading-out wire 12 drawn around resistance part 11.Then, will It is drawn by each winding leading-out wire 12 of slot 44A to the front of main part 41A.At this point, the slave slot 44A in winding leading-out wire 12 draws The downside of terminal 53A is configured to the position in front out.In addition it is also possible to be before the slave slot 44A of winding leading-out wire 12 is led to The position of side is configured to the height roughly the same with terminal 53A.Then, winding leading-out wire 12 is bent upwards, then than The upper place terminal 53A bends winding leading-out wire 12 in the lateral direction.At this point, when with the point of view parallel with Z axis, Winding leading-out wire 12 and terminal 53A intersects crosswise.In winding leading-out wire 12 at least from the position intersected with terminal 53A to This section of front end is the end 12A that coating 10A2 is stripped.

After winding leading-out wire 12 is bent and is intersected with terminal 53A, as shown in figure 5, terminal 53A is to catch winding to draw The mode of the end 12A of outlet 12 is rearward turned back.Thereby, it is possible to keep winding to draw in the state that it is grasped by terminal 53A Outlet 12.In addition, in the end 12A of winding leading-out wire 12, since the coating 10A2 of outer peripheral surface is stripped, terminal 53A End 12A is grasped, so that lead 50A can conductively be connect with winding leading-out wire 12 (i.e. coil 10).

In addition, as depicted in figs. 1 and 2, each winding leading-out wire 12 passes through the terminal than being attached thereto in present embodiment The slot 44A of 53A more outward configuration in the lateral direction, therefore, 2 winding leading-out wires 12 at place more upper than terminal 53A, with The opposite mode outside-in bending in mutual front end, but the utility model is not limited to the structure.As long as winding leading-out wire 12 are configured in a manner of being grasped by terminal 53A.For example, passing through the right and left in multiple slot 44A in each winding leading-out wire 12 To center near slot 44A, and connect terminal 53A be configured at place more more outward than the slot 44A that winding leading-out wire 12 passes through In the case where, each winding leading-out wire 12 is bent at place more upper than terminal 53A from Inside To Outside.Even if in this case, Since winding leading-out wire 12 and terminal 53A intersects crosswise, terminal 53A is turned back, so as to be grabbed using terminal 53A Hold the end 12A of winding leading-out wire 12.

In the state that the end 12A of winding leading-out wire 12 is grasped by terminal 53A, by winding leading-out wire 12 and terminal 53A Connecting portion 60 be brazed together.It is vertical in front side (X-axis positive direction side) direction of coil component 1 when being brazed In the state of lower section, connecting portion 60 is immersed in the solder of melting.As a result, in connecting portion 60, can be filled up using solder The gap of winding leading-out wire 12 and terminal 53A.In addition it is also possible to be that connecting portion 60 is not impregnated in solder, and use soldering iron into Row soldering.

After being brazed to connecting portion 60, it is covered using coating member 70.Coating member 70 is at least to cover The mode of the end 12A entirety of lid winding leading-out wire 12 is adjacent to winding leading-out wire 12.By coating member 70 with such as liquid Connecting portion 60 is coated under state, later using for cured material (so-called bonding agent).Thereby, it is possible to make covering part Part 70 is adjacent to connecting portion 60.

Coating member 70 is to be shelled in order to prevent when current flowing is in coil 10 in the coating 10A2 of covering thread 10A From position generate galvanic corrosion and be arranged.It is believed that galvanic corrosion is produced due to being powered in the state that attachment of moisture is in conductor It is raw.Therefore, it is intended that the material of coating member 70 has insulating properties and waterproofness.Additionally, it is desirable that the material of coating member 70 is heat The caused lesser material of deterioration.Thereby, it is possible to prevent the heat generated when the coil 10 due to current flowing and in coating member 70 generate crack (crackle), and prevent from being caused to generate galvanic corrosion by the moisture for entering crack.Such as ring can be used in coating member 70 Oxygen resin, silicone resin, urethane resin etc..

Additionally, it is desirable that coating member 70 not only covers the end 12A of winding leading-out wire 12, grabbing in also covering terminal 53A Hold the position of end 12A.Electric leakage is generated thereby, it is possible to prevent terminal 53A and external component contact.In addition, terminal 53A matches It is placed between the both ends of the left and right directions of main part 41A.In addition, when coil component 1 is installed on circuit circuit board, in terminal The rear disposal subject portion 41A of 53A, in the lower section configuration circuit plate of terminal 53A.Accordingly, it is difficult to generate external component from a left side The situation that right direction, rear, lower section are contacted with terminal 53A.Accordingly it is also possible to coating member 70 not in left and right directions, rear, under Square side covers terminal 53A.

According to present embodiment, a pair of terminal 52A, 53A of lead 50A is respectively to the mutually different side of main part 41A It is prominent to (lower section, front).Therefore, the terminal 53A that can become front not interfere circuit board, and the terminal 52A of lower section and electricity The structure of road plate connection.Thereby, it is possible between the end 12A for the winding leading-out wire 12 for ensuring to be grasped by terminal 53A and circuit board Insulation distance, can prevent from coil 10 to circuit board generate electric leakage.In addition, in present embodiment, due to terminal 53A to The parallel front of circuit board is prominent, no matter therefore terminal 53A length in the front-back direction, can more reliably ensure by Insulation distance between the end 12A and circuit board of the winding leading-out wire 12 of terminal 53A grasping.

In addition, a pair of terminal 52A, 53A of lead 50A is respectively from the direction each other of main part 41A according to present embodiment Different faces (bottom surface 42A, side 43A) is prominent.Therefore, in order to by the installation of coil component 1 on circuit boards, when by main part When 41A is configured in the bottom surface 42A mode opposite with circuit board, side 43A is configured in a manner of with circuit board interval.Cause This, can will configure in a manner of with circuit board interval from side 43A terminal 53A outstanding.Thereby, it is possible to more reliably Insulation distance between the end 12A and circuit board of the winding leading-out wire 12 for ensuring to be grasped by terminal 53A.

In addition, in present embodiment, since the terminal 53A of lead 50A is prominent from the side 43A in the front of main part 41A, Therefore the size of the up and down direction (Z-direction) of terminal base 40A can be reduced, and is easy for coil component 1 to be thinned.This It outside, can also be not parallel with YZ plane with side 43A.As long as side 43A by terminal 53A can it is outstanding forwards in a manner of be arranged i.e. Can, it can also be tilted from YZ plane to Y direction or Z-direction.

In addition, lead 50A has the bending section 51A for the inside for being embedded in main part 41A in present embodiment.Utilize this Structure can prevent lead 50A from falling off from main part 41A.In addition, the bending angle of bending section 51A is not limited to 90 degree.Bending As long as portion 51A is prominent from bottom surface 42A with terminal 52A, and terminal 53A is bent from side 43A mode outstanding.In bending section In the case that the bending angle of 51A is less than 90 degree, terminal 53A angle outstanding and length are adjusted, so that working as coil device When part 1 is installed on circuit board, terminal 53A does not interfere circuit board.

In addition, each winding leading-out wire 12 is grasped by 2 lead 50A in present embodiment.What stream alived as a result, draws The quantity of line 50A increases and winding leading-out wire 12 and the contact area of lead 50A become larger, thus can circulate in coil 10 compared with Big electric current.In addition, the not limited to for grasping the lead 50A of each winding leading-out wire 12 is 2 fixed.For example, winding leading-out wire 12 can To be grasped by 1 lead 50A, can also be grasped by 3 or more lead 50A.Winding leading-out wire is grasped using a plurality of leads 50A 12, so as to more stably keep winding leading-out wire 12.

In addition, being provided between the front end of the terminal 53A of the side 43A and bending of main part 41A in present embodiment The clearance G of specified interval.The clearance G is set, to configuring the end 12A of winding leading-out wire 12 in the side with main part 41 The position of 43A interval.As a result, when making connecting portion 60 be impregnated in solder, can main part 41A side 43A with Ensure gap between the liquid level of the solder of melting.Due to main part 41A use resin material, can main part 41A with Ensure gap between the liquid level of solder, so as to prevent main part 41A from melting because of the heat of solder.

In addition, in present embodiment, due to not making main part 41A and solder contact soak connecting portion 60 integrally The lead 50A of connecting portion 60 and winding leading-out wire 12 can be securely attached at one using solder in solder by stain It rises.

In addition, being grasped in the side with main part 41 due to the end 12A of winding leading-out wire 12 in present embodiment The position of 43A interval, therefore even if utilizing the soldering for having used soldering iron or welding the end 12A of winding leading-out wire 12 In the case where being connect with terminal 53A, it can also prevent the heat of main part 41A reason soldering iron or welding generation and melt.

In addition, in present embodiment, the terminal 53A of lead 50A in the X-direction of fold back portion 53A1 length L with Identical or longer than the outer diameter D mode of the outer diameter D of winding leading-out wire 12 is bent.The contact of winding leading-out wire 12 and lead 50A as a result, Area becomes larger, and can firmly grasp winding leading-out wire 12.In addition, since the contact area becomes larger, winding leading-out wire 12 with draw Contact resistance between line 50A becomes smaller, and is capable of increasing the negotiable electric current in winding leading-out wire 12 (i.e. coil 10).

In addition, the clearance G of the front end of the side 43A and terminal 53A of main part 41A is for example to become and winding leading-out wire 12 Outer diameter D same degree more than (in the case where coil 10 is formed by the covering thread 10A of diameter 3.2mm, outer diameter D be 3.2mm with On) mode be arranged.Thereby, it is possible to make the terminal 53A of lead 50 not turn back in a manner of side 43A interference.In addition, attachment It is difficult to contact by terminal 53A with main part 41A in the solder of connecting portion 60, can prevent main part 41A from melting.

In addition, as shown in Figure 4, Figure 5, the terminal 53A of lead 50A is bent upwards (that is, to bottom surface in present embodiment The opposite lateral bend of the side 42A).Using the structure, coil component 1 is installed in the mode for keeping bottom surface 42 opposite with circuit board When on circuit board, it can prevent the terminal 53A of lead 50A from interfering circuit board.In addition, can make lead 50A's using the structure Terminal 53A is protruded forwards from the lower position of main part 41A.Thereby, it is possible to reduce the up and down direction (Z axis of main part 41A Direction) size, make coil component 1 integrally be thinned.In addition, using by terminal 53A curved structure upwards, it can be ensured that Insulation distance between terminal 53A and circuit board.

In addition, in present embodiment, in the core wire 10A1 of covering thread 10A for forming coil 10, without using based on copper The material of ingredient, and use using aluminium as the material of principal component.Since aluminium is the material more cheap than copper, according to this embodiment party Formula can make coil component 1 less expensively.In addition, aluminium is lighter than copper, therefore uses using aluminium as the core wire 10A1 of principal component, So as to make 1 lightweight of coil component.

In addition, in existing coil component, using a terminal being connect with circuit board and by a terminal and coil Winding leading-out wire connect both modes.Since the shape of terminal needs to maintain the rodlike through-hole to be inserted into circuit board, Therefore it in existing coil component, for connection terminal and coil, needs coil being wound in terminal.In contrast, this reality It applies in mode, is separately provided the end 12A connection of the terminal 52A and winding leading-out wire 12 of the bottom surface side connecting with circuit board The terminal 53A of side.Therefore, there is no need to the terminal 52A that winding leading-out wire 12 is wound in lead 50, and will rigidity be higher than around The terminal 53A of group lead-out wire 12 turns back and grasps winding leading-out wire 12, so as to more reliably connect within less working hour Terminal 53A and coil 10.In addition, the shape of the winding leading-out wire 12 of connecting portion 60 becomes simply, to cover using coating member 70 The operation that lid has removed the end 12A of the winding leading-out wire 12 of coating 10A2 becomes easy.

In addition, the terminal 53A of lead 50A is set to relative to terminal base 40A around the opposite of resistance part 11 in present embodiment Side.It can be prevented when operator carries out the operation for connecting winding leading-out wire 12 with terminal 53A around resistance part using the structure 11 interfere operation, and operability when making coil component 1 improves.In addition, winding leading-out wire 12 passes through the downside of terminal base 40A (the bottom surface side 42A) is routed to terminal 53A from around resistance part 11.Using the structure, it can prevent winding leading-out wire 12 from interfering magnetic core 30. In addition, when circuit board installs coil component 1, winding leading-out wire 12 is configured by terminal base 40A and circuit using the structure In region folded by plate.Therefore, it can prevent due to winding leading-out wire 12 and external component contact, the packet of winding leading-out wire 12 Object 10A2 is covered to be stripped and generate electric leakage.

In addition, winding leading-out wire 12 passes through the slot 44A of terminal base 40A in present embodiment.Therefore, slot 44A becomes winding The guiding device (guide) of lead-out wire 12, the wiring operations of winding leading-out wire 12 become easy.In addition, be configured in slot 44A around Group lead-out wire 12 is protected by terminal base 40A.Therefore, winding leading-out wire 12 and external component contact can be more reliably prevented from.

In addition, in present embodiment, when curved above the front direction of terminal base 40A by the winding leading-out wire 12 of slot 44A When folding, applied force upwards.Using the upward power, winding leading-out wire 12 stretches upwards in slot 44A, winding leading-out wire 12 It is configured in a manner of close to the bottom of slot 44A.Since the size C2 (depth) of the up and down direction of slot 44A is greater than winding leading-out wire 12 Outer diameter D, therefore gap is set between the winding leading-out wire 12 stretched upwards and the bottom surface 42A of terminal base 40A.When in the shape When coil component 1 being mounted on circuit board under state, in the winding leading-out wire 12 and circuit configured in a manner of close to the bottom of slot 44A Gap is set between plate, it can be ensured that the insulation distance between winding leading-out wire 12 and circuit board.

In addition, winding leading-out wire 12 is hooked by the outer peripheral surface of the terminal 53A of lead 50A in present embodiment.As a result, can Winding leading-out wire 12 is enough stably kept, therefore winding leading-out wire 12 and the attended operation of lead 50A become easy.

In addition, winding leading-out wire 12 is bent in the lateral direction in the state of being hooked by lead 50A in present embodiment, Thus the terminal 53A of the end 12A and lead 50A of winding leading-out wire 12 intersect crosswise.Therefore, the end turned back can be utilized Sub- 53A grasps lead 50A.

In addition, the terminal 53A of lead 50A is bent into U-shaped, but the structure of present embodiment is not in structure shown in fig. 5 It is limited to this.Fig. 6 indicates another example of the bend mode of the terminal 53A of lead 50A.As shown in fig. 6, can also be with the end of lead 50A Sub- 53A is bent in a manner of being wound in winding leading-out wire 12 (i.e. with 180 ° or more of angle).Thereby, it is possible to more stably keep Winding leading-out wire 12, and can more reliably make winding leading-out wire 12 that can conductively connect with lead 50A.

In addition, in present embodiment, as long as winding leading-out wire 12 and lead 50A can be connected conductively, connection method It is not limited to be brazed.For example, it can be winding leading-out wires 12 and lead 50A to grasp the shape of winding leading-out wire 12 in lead 50A It is welded under state.

(second embodiment)

In the following, illustrating the coil component of the utility model second embodiment.Fig. 7 is the utility model second embodiment Coil component 101 stereoscopic figure.Fig. 8 is the exploded perspective view of coil component 101.In addition, being omitted aftermentioned in Fig. 8 Coating member 170 diagram.

The coil component 101 of second embodiment includes coil 110, bobbin winder bracket 120, magnetic core 130 and 2 terminal base 140 (140A,140B).The direction of the axis of the coil of the coil component 101 of second embodiment and the coil component of first embodiment 1 is different.

Coil 110 is formed by covering thread 10A identical with the coil 10 of first embodiment.Coil 110 have make axis court Vertically (Z-direction) configuration around resistance part 111 and from double-end 2 winding leading-out wires 112 around resistance part 111. Outer peripheral surface around resistance part 111 is covered by the guard block 113 with insulating properties.In addition, in the present embodiment, winding leading-out wire 112 draw from the top around resistance part 111.

Bobbin winder bracket 120 is tubular.Coil 110 is wound in the outer peripheral surface of bobbin winder bracket 120.121 edge of hollow portion of bobbin winder bracket 120 Up and down direction perforation.A part of magnetic core 130 is inserted into the hollow portion 121.

Magnetic core 130 is composed of the magnetic core 131 of E shape and the magnetic core 132 of I shape.The center pillar 131A of magnetic core 131 is with logical The mode for crossing the hollow portion 121 of bobbin winder bracket 120 configures, and the part and magnetic core 132 except the center pillar 131A of magnetic core 131 are to surround line The mode of circle 110 configures.

Each terminal base 140 (140A, 140B) is respectively provided with the main part 141 (141A, 141B) and a plurality of leads of resin 150(150A,150B).Each lead 150 is formed as one by injection molded with main part 141.2 terminal bases 140A, 140B The front and back of bobbin winder bracket 120 is configured in front-rear direction (X-direction) respectively.In addition, in present embodiment, terminal base 140A, 140B and bobbin winder bracket 120 are formed as one.

Fig. 9 indicates the side view being configured near the terminal base 140A in front (X-axis positive direction side) in coil component 101. Fig. 9 indicate lead 150A terminal 153A be bent before state, Figure 10 indicate lead 150A terminal 153A be bent it State afterwards.

Each lead 150A of terminal base 140A has the bending section 151A of embedment main part 141 and protrudes from main part 141A A pair of terminal (bottom surface side terminal 152A, side side terminal 153A).Bending section 151A is respectively facing lower section and front with both ends Mode bend 90 degree.Bottom surface side terminal 152A (in the following, being denoted as " terminal 152A ") is that (Z axis is negative from the downside of main part 141A Direction side) bottom surface 142A lead 150A outstanding downwards one end (lower end).Side side terminal 153A is (in the following, note It is from the side 143A in the front (X-axis positive direction side) of main part 141A lead 150A outstanding forwards for " terminal 153A ") The other end (front end).

By each winding leading-out wire 112 of coil 110 from the top extraction around resistance part 111, and stretch downwards.Then, around The end 112A of group lead-out wire 112 is hooked by terminal 153A, and is bent in the lateral direction.The end of winding leading-out wire 112 as a result, 112A and terminal 153A intersects crosswise.In this state, terminal 153A is to catch the end 112A of winding leading-out wire 112 Mode is rearward turned back.Thereby, it is possible to the end of winding leading-out wire 112 is kept in the state that it is grasped by terminal 153A 112A。

In the state that the end 112A of winding leading-out wire 112 is grasped by terminal 153A, by end 112A and terminal 153A Connecting portion 160 be brazed together.In addition, being covered and being connected using coating member 170 after being brazed to connecting portion 160 Position 160.Coating member 170 is at least to cover position (the i.e. winding leading-out wire that the coating 10A2 of covering thread 10A is stripped 112 end 112A) whole mode, it is adjacent to winding leading-out wire 112.

In present embodiment, the direction of terminal 153A bending is different from the direction that the terminal 53A of first embodiment is bent. In present embodiment, the end 112A of winding leading-out wire 112 is configured in a manner of intersecting with terminal 153A at terminal 153A Side.Therefore, in order to grasp the end 112A of winding leading-out wire 112, terminal 153A is downwards (that is, to after bottom surface 142A) bending Rearward turn back.

In present embodiment, coil 110 is configured in a manner of being placed in the upper surface of terminal base 140.Therefore, from around resistance part Winding leading-out wire 112 is drawn on 111 top, so as to prevent winding leading-out wire 112 from interfering with each other with terminal base 140.In addition, In the case where drawing winding leading-out wire 112 from the lower part around resistance part 111, due to from the distance around resistance part 111 to terminal 153A It is shorter, therefore the length of winding leading-out wire 112 shortens, it may be difficult to winding leading-out wire 112 is routed.However, this implementation In mode, winding leading-out wire 112 can ensure the length of winding leading-out wire 112 from the top extraction around resistance part 111, around The wiring of group lead-out wire 112 becomes easy.

It is the explanation of the illustrative embodiment of the utility model above.The embodiments of the present invention is not limited to above-mentioned Description can carry out various modifications in the range of the technical idea of the utility model.For example, by exemplary in specification Embodiment that ground is expressed etc. or self-evident embodiment etc. carry out appropriately combined structure and are also contained in the utility model In embodiment.

(variation)

For example, coil component 1,101 is illustrated as reactor, but the utility model in above-mentioned embodiment The coil component of embodiment be not limited to reactor.Coil component is also possible to such as with transformer or choke coil The device of coil.

In addition, in the first and second above-mentioned embodiments, both 2 winding leading-out wires 12,112 respectively with front Terminal base 40A, 140A lead 50A, 150A connection, but the embodiments of the present invention is not limited to the structure.It can root According to the wiring etc. of coil component 1,101 or the circuit board for installing coil component 1,101, and change each winding leading-out wire 12,112 Which it is connect with lead 50,150 of front and back.

For example, 2 winding leading-out wires 12 are drawn from the lower end in the front around resistance part 11, Bu Guogen in first embodiment Different according to the structure of coil 10, a winding leading-out wire 12 is drawn from the lower end in the front around resistance part 11 sometimes, another from around It draws the lower end at the rear of resistance part 11.In this case, a winding leading-out wire 12 is connect with the lead 50A in front, it will be another One winding leading-out wire 12 is connect with the lead 50B at rear, so as to shorten the wiring distance of winding leading-out wire 12.

In addition, in the case where coil component 1,101 has multiple coils, the quantity of winding leading-out wire with coil number Amount increases and increases.In this case, connect when by any bar lead 50,150 of all winding leading-out wire and front and back When connecing, winding leading-out wire may be interfering with each other.Therefore, coil component 1,101 have multiple coils in the case where, by it is a plurality of around Group lead-out wire is divided into the winding leading-out wire drawn forwards and the winding leading-out wire rearward drawn, so as to prevent winding from drawing Outlet interferes with each other.

In addition, in above-mentioned embodiment, coil component 1,101 have have terminal outstanding forwards lead 50A, Lead 50B, 150B of 150A and rearward terminal outstanding, but the embodiments of the present invention is not limited to the structure.For example, In above-mentioned first embodiment and second embodiment, lead 50A, the 150A with front respectively of winding leading-out wire 12,112 Connection, therefore can not also have rearward terminal outstanding with lead 50B, the 150B at rear.Alternatively, can also with coil component 1, 101 do not have lead 50B, the 150B at rear.All lead 50A for having alternatively, it is also possible to terminal base 40A, the 140A in front, 150A does not have terminal 53A, 153A outstanding forwards.The lead 50A that can also only be connect with winding leading-out wire 12,112, 150A has terminal 53A, 153A, and lead 50A, 150A in addition to this only has terminal 52A, the 152A connecting with circuit board.

In addition, the terminal 53A upward direction of the lead 50A of first embodiment is bent, the lead of second embodiment The terminal 153A of 150A is bent downwards, but the embodiments of the present invention is not limited to the structure.For example, it is also possible to terminal 53A, 153A are bent in the lateral direction.In this configuration, also winding leading-out wire 12,112 can be grasped using terminal 53A, 153A.

Have alternatively, it is also possible to be equipped with for coil component 1,101 from the terminal outstanding in the lateral direction of main part 41,141 Lead.

Claims (18)

1. a kind of coil component can be installed on circuit board, the coil component is characterised by comprising:

Coil, be equipped with around resistance part and from this around resistance part draw winding leading-out wire；With

Terminal base, the lead for being equipped with the main part with insulating properties and being kept by the main part,

The lead includes:

Bottom surface side terminal, it is prominent from the bottom surface of the main part opposite with the circuit board, and can be with the circuit board Connection；With

Side side terminal, it is prominent from the side of the main part to the direction different from the projected direction of the bottom surface side terminal Out, and with the end of the winding leading-out wire it connect.

2. coil component as described in claim 1, it is characterised in that:

The side side terminal has the folded-back part turned back to the side,

The end of the winding leading-out wire is grasped by the folded-back part.

3. coil component as claimed in claim 2, it is characterised in that:

Gap is provided between the front end of the folded-back part of the lead and the side of the main part.

4. coil component as described in claim 1, it is characterised in that:

The winding leading-out wire be with using aluminium as the covering thread of the core wire of principal component,

In the end of the winding leading-out wire, the coating of the winding leading-out wire is stripped,

The coil component further includes the coating member for covering the end of the winding leading-out wire.

5. coil component as claimed in claim 4, it is characterised in that:

The end of the winding leading-out wire and the connecting portion of the side side terminal are covered by the coating member.

6. coil component as claimed in claim 5, it is characterised in that:

In the connecting portion, the end of the winding leading-out wire and the side side terminal are connected to one using soldering It rises,

The end for the winding leading-out wire being brazed is covered by the coating member.

7. coil component as described in claim 1, it is characterised in that:

In the state that the end of the winding leading-out wire is hooked by the outer peripheral surface of the side side terminal, with the side side Son intersects crosswise.

8. coil component as described in claim 1, it is characterised in that:

The terminal base has a plurality of lead,

The end of the winding leading-out wire is connect with a plurality of leads.

9. coil component as described in claim 1, it is characterised in that:

The main part is formed as one with the lead,

The lead has the bending section for the inside for being embedded in the main part.

10. coil component as described in claim 1, it is characterised in that:

The bottom surface side terminal from bottom surface direction outstanding and the side side terminal from side direction outstanding just It hands over.

11. such as described in any item coil components of claims 1 to 10, it is characterised in that:

It is described around resistance part relative to the main body section in the side side terminal projected direction phase outstanding with the lead Anti- side,

The winding leading-out wire is routed to the side side terminal around resistance part from described by the bottom surface side of the main part.

12. coil component as claimed in claim 11, it is characterised in that:

The bottom surface of the main part is provided with the slot parallel with the projected direction,

The winding leading-out wire is routed by the slot.

13. coil component as claimed in claim 12, it is characterised in that:

The depth of the slot is greater than the outer diameter of the winding leading-out wire.

14. coil component as claimed in claim 12, it is characterised in that:

The position that the winding leading-out wire passes through in the slot is located on the depth direction of the slot than the side side Son more leans on the bottom surface side, or is located at height identical with the side side terminal,

The end of the winding leading-out wire in the connecting portion of the end of the winding leading-out wire and the side side terminal Portion is located at the opposite side of the bottom surface side relative to the side side terminal.

15. coil component as claimed in claim 13, it is characterised in that:

Opposite lateral bend of the side side terminal to the bottom surface side.

16. such as described in any item coil components of claims 1 to 10, it is characterised in that:

The winding portion is located at the face of the opposite side of the bottom surface of the main part,

From the winding leading-out wire drawn around resistance part by the opposite side of the bottom surface side of the main part from described The side side terminal is routed to around resistance part.

17. coil component as claimed in claim 16, it is characterised in that:

The end of the winding leading-out wire in the connecting portion of the end of the winding leading-out wire and the side side terminal Portion is located at the bottom surface side relative to the side side terminal.

18. coil component as claimed in claim 17, it is characterised in that:

The side side terminal is to the bottom surface lateral bend.