Terminal blocks, spools and coil assembly

Abstract

In one embodiment of the present invention, a terminal block includes: a terminal; and a base having a terminal mounting portion on which the terminal is mounted, the terminal including a coupling portion engaging with the terminal mounting portion, the terminal mounting portion having: an insertion hole into which the coupling portion is inserted and extending in a first direction; and a fitting hole connected to the insertion hole, the coupling portion including a claw portion engaging with the fitting hole, the claw portion protruding toward the fitting hole by bending at its root around a straight line substantially parallel to the first direction. According to one embodiment of the present invention, the pull-out force of a terminal fixed by a latch using a claw that is bent to make it upright can be improved.

Description

Technical Field

[0001] This invention relates to terminal blocks, spools, and coil assemblies. Background Technology

[0002] Japanese Patent Publication No. 62-149827 (Patent Document 1) discloses a technique for mounting a terminal block on a spool of a coil device. The terminal block has a terminal insertion port for inserting and securing a terminal, and a fitting hole connected to the terminal insertion port, formed in the terminal mounting portion. Furthermore, a locking claw is formed on the terminal by cutting and bending. After the terminal is inserted into the terminal insertion port, the locking claw engages with the fitting hole of the terminal mounting portion, thus securing the terminal to the terminal mounting portion using a so-called snap-fit ​​mechanism.

[0003] In the terminal block described in Patent Document 1, the root of the terminal's claw is bent along a straight line perpendicular to the insertion direction of the terminal (hereinafter referred to as the "horizontal axis"), thus forming an upright claw on the mating hole side. Therefore, the rigidity of the terminal's claw is low compared to the torque around the horizontal axis, and the claw can easily rotate around the horizontal axis as a fulcrum. After the terminal is inserted into the terminal insertion hole, a torque around the horizontal axis is applied to the claw. As a result, the claw temporarily falls down due to elastic deformation, and upon reaching the mating hole, it returns to its original upright state using elastic restoring force, and engages with the mating hole. That is, a snap-fit ​​connection utilizing the elastic deformation of one side of the terminal is formed. Summary of the Invention

[0004] In the terminal block described in Patent Document 1, the rigidity of the chuck is lower than the torque around the horizontal axis generated when a pulling force is applied to the terminal, thus resulting in a problem where the force to pull out the terminal is weaker.

[0005] The present invention was made in view of the above-mentioned problems, and its purpose is to improve the pull-out force of terminals that are fixed by means of snap-fit ​​connection using bent and upright claws.

[0006] In one embodiment of the present invention, a terminal block includes: a terminal; and a base having a terminal mounting portion on which the terminal is mounted, the terminal including a coupling portion engaging with the terminal mounting portion, the terminal mounting portion having: an insertion hole into which the coupling portion is inserted and extending in a first direction; and a fitting hole connected to the insertion hole, the coupling portion including a claw portion engaging with the fitting hole, the claw portion protruding toward the fitting hole by bending at its root around a straight line substantially parallel to the first direction.

[0007] On the aforementioned terminal block, a bevel can also be formed on the terminal mounting portion to press the mating portion toward the fitting hole.

[0008] On the aforementioned terminal block, the claw portion may also be provided at the front end of the first direction of the joint portion, and the inclined surface is formed in such a way that the front end of the joint portion is pressed toward the fitting hole.

[0009] On the aforementioned terminal block, the connecting portion may also have a first positioning structure for positioning the connecting portion toward the insertion hole in a second direction orthogonal to the first direction.

[0010] On the aforementioned terminal block, the first positioning structure may also be a protrusion that protrudes in the second direction and contacts the wall of the insertion hole.

[0011] On the aforementioned terminal block, the protrusion can also be formed such that the joint is made slightly larger than the insertion hole in the second direction.

[0012] On the aforementioned terminal block, the protrusion may also be formed at a position separate from the claw portion in the first direction.

[0013] On the aforementioned terminal block, the connecting portion may also have a second positioning structure for positioning the connecting portion toward the insertion hole in a third direction orthogonal to both the first and second directions.

[0014] On the aforementioned terminal block, the second positioning structure may also include: a first positioning surface formed at one end of the joint in the third direction and in contact with the wall of the insertion hole; and a second positioning surface formed at the other end of the joint in the third direction and in contact with the wall of the insertion hole.

[0015] On the aforementioned terminal block, the cross-sectional shape of the insertion hole can also be a rectangle with one side extending in a second direction orthogonal to the first direction, and the fitting hole opens toward a wall surface perpendicular to the second direction of the insertion hole.

[0016] On the aforementioned terminal block, in a third direction orthogonal to both the first and second directions, the claw portion may also be disposed at the center of the joint portion.

[0017] In the aforementioned terminal face, the latch portion and the engagement surface of the fitting hole can also be approximately perpendicular to the first direction.

[0018] According to one embodiment of the present invention, a bobbin is provided, comprising: a bobbin portion on which a coil is wound and a terminal block, the bobbin portion being integrally formed with a base of the terminal block, and the terminal having: a coil connection portion to which a wire of the coil is connected; and a terminal portion connected to a circuit.

[0019] According to one embodiment of the present invention, a coil device is provided, comprising: the aforementioned spool portion; and a coil wound on the spool portion.

[0020] Invention Effects

[0021] According to an embodiment of the present invention, the claw portion of the terminal is bent at its root along a straight line that is substantially parallel to the extension direction of the insertion hole (i.e., the insertion direction of the terminal). As a result, the strength of the torque generated in the claw portion when a force is applied to pull the terminal is increased, and thus the pulling force can be improved. Attached Figure Description

[0022] Figure 1 This is an external view of the reactor in an embodiment of the present invention.

[0023] Figure 2 This is an external view of the spool in an embodiment of the present invention.

[0024] Figure 3 This is an external view of the terminal in an embodiment of the present invention.

[0025] Figure 4 This is an external view of the terminal in an embodiment of the present invention.

[0026] Figure 5 This diagram shows the engagement state of the terminal and the terminal insertion part of the spool.

[0027] Figure 6 This diagram shows the engagement state of the terminal and the terminal insertion part of the spool. Detailed Implementation

[0028] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same or corresponding items will be marked with the same or corresponding symbols, and repeated descriptions will be omitted. In addition, in the various drawings, when items are represented by multiple symbols, some of the symbols will be appropriately omitted.

[0029] Figure 1 This is an external view of the reactor in an embodiment of the present invention.

[0030] In the following explanation, from Figure 1 The direction from the upper right to the lower left is defined as the X-axis, the direction from the upper left to the lower right is defined as the Y-axis, and the direction from bottom to top is defined as the Z-axis. The X-axis, Y-axis, and Z-axis are orthogonal to each other. For ease of explanation, the positive X-axis is also called "front," the negative X-axis is called "back," the positive Y-axis is called "left," the negative Y-axis is called "right," the positive Z-axis is called "up," and the negative Z-axis is called "down." These names are used to concisely describe the relative positions and orientations of the various parts constituting reactor 1, and do not indicate the orientation of reactor 1 during use. Furthermore, reactor 1 can also be used with the X-axis, Y-axis, Z-axis, and one of their intermediate directions perpendicular to each other.

[0031] The reactor 1 includes: an EI-type iron core 10 with a center leg (not shown); a slightly cylindrical spool portion 30a with a terminal block 40 (hereinafter referred to as "spool 30") through which the center leg of the iron core 10 passes and a terminal block base 40 (hereinafter referred to as "base 40"); one or more coils 20 wound on the spool portion 30a (two in the specific example shown); and a plurality of terminals 50 mounted on the base 40. By mounting the terminals 50 on the base 40, a terminal block 60 is formed.

[0032] The core is a gapped core. The end face of the middle leg of the E-type core 11 is joined to the side of the I-type core 12 through a flat plate-shaped gap member (not shown in the figure) formed by a non-magnetic material such as resin, thereby forming a gap (not shown in the figure). The core 10 is a powder core, but it can also be other types of cores (such as a laminated core made by stacking ferrite cores, silicon steel plates, or other electromagnetic steel plates).

[0033] The coil 20 is formed by winding a conductor with an insulating sheath such as enameled wire into a spiral shape. The conductor may be, for example, a flat wire or a round wire made of copper or aluminum. More specifically, the coil 20 of this embodiment is formed by neatly winding multiple layers of round wire, but the cross-sectional shape of the conductor and the winding method are not limited to this structure.

[0034] Figure 2 This is an external view of the spool 30 in the state of having the terminal 50 installed according to an embodiment of the present invention. The spool 30 is formed, for example, of a material having electrical insulating properties such as ferrite resin, epoxy resin, unsaturated polyester resin, polyurethane resin, BMC (bulk molding compound), polyphenylene sulfide, or polybutylene terephthalate.

[0035] The spool 30 includes: a spool portion 30a having a cylindrical body 31, and two pairs of bases 40 integrally formed at both ends along the extension direction (X-axis direction) of the body 31. Furthermore, the spool portion 30a has two pairs of flange portions 32 integrally formed with the outer circumference of the body 31, and one flange portion 34. The flange portions 32 and 34 are flat plate-shaped members perpendicular to the extension direction of the body 31. The flange portions 32 are rectangular members, one on each of the left and right sides at both ends along the extension direction of the body 31, and are elongated vertically. The flange portion 34 is an annular member formed over the entire central portion along the extension direction of the body 31.

[0036] A ring-shaped flange 33 is formed by a pair of vertically elongated flange portions 32 located at each end of the body 31 along its extension direction and a pair of horizontally elongated bases 40. Furthermore, the back surfaces 32a of the pair of flange portions 32 constituting each flange portion 33 and the back surfaces 40a of the pair of bases 40 are formed on the same plane.

[0037] Coil 20 ( Figure 1 The outer periphery of the body 31 of the spool portion 30a is separated by a pair of flange portions 33 and 34 along the axial direction (i.e., the X-axis direction) of the coil 20. Two coils 20 are wound on the body 31 of the spool portion 30a. One coil 20 is positioned between one flange portion 33 and one flange portion 34 of the spool portion 30a (hereinafter referred to as the "first winding portion"), and the other coil 20 is positioned between the other flange portion 33 and the other flange portion 34 (hereinafter referred to as the "second winding portion").

[0038] On the base 40, a plurality of terminal mounting portions 41 (four in the specific example shown) on which terminals 50 are mounted are formed at predetermined intervals in the Y-axis direction. An insertion hole 42 extending vertically (in the first direction) is formed on the terminal mounting portion 41 to insert the lower part (the connecting portion 53 described later) of the terminal 50. The upper end of the insertion hole 42 opens toward the top of the terminal mounting portion 41, forming an insertion opening 42a. In this embodiment, terminals 50 are mounted on two of the four terminal mounting portions 41. The detailed internal structure of the terminal mounting portion 41 will be described later.

[0039] Figure 3 as well as Figure 4 These are external views of the terminal 50 as seen from different directions. The terminal 50 is formed from a metal sheet such as copper, brass, phosphor bronze, iron, or stainless steel, and may be surface-treated as needed, for example, by nickel plating, tin plating, or trivalent chromium plating. The terminal 50 of this embodiment can be manufactured at a lower cost using a pressure processing method. Furthermore, the manufacture of the terminal 50 is not limited to pressure processing; other processing methods such as cutting, forging, or casting, or combinations thereof, can also be used.

[0040] Terminal 50 has: a terminal portion 51 for connecting reactor 1 to a circuit, a coil connection portion 52 for connecting the end of the wire of coil 20, and a connecting portion 53 for inserting into an insertion hole 42 formed on terminal mounting portion 41 of base 40. Except for the coil connection portion 52, the protrusion 531 of connecting portion 53 (described later), and the claw portion 533, terminal 50 is formed as a flat plate perpendicular to the X-axis direction.

[0041] Terminal portion 51 is a rectangular flat plate that is elongated vertically. Terminal portion 51 is shaped to be inserted into a plug. A through hole 51a for engaging with a plug is formed on terminal portion 51. Using the through hole 51a, a crimp terminal or the like is fixed to terminal portion 51 with a screw.

[0042] The coil connection portion 52 is an arm that extends vertically toward the terminal portion 51. In order to facilitate the winding of the wire of the coil 20, an upwardly protruding protrusion 521 is formed at the front end and the middle part in the extension direction of the coil connection portion 52.

[0043] At the upper part of the joint 53, a protrusion 531 is formed at the left and right center, protruding in the same direction as the claw portion 533 described later. The protrusion 531 is formed, for example, by a half-punch.

[0044] A cutout 532 is formed from one end to the center of the upper and lower center portions of the joint 53. The lower portion is bent forward from the cutout 532 of the joint 53 to form a forward-facing (i.e., towards the fitting hole 43 described later) Figure 6 )) The protruding and upright claw part 533.

[0045] Therefore, the claw portion 533 is positioned approximately at the center of the terminal 50 in the Y-axis direction and engages with the approximately center of the engagement hole 43 in the Y-axis direction. In other words, the claw portion 533 hooks onto the corner portion 44 described later. Figure 6 The corner portion 44 is located approximately below the center portion in the Y-axis direction. The corner portion 44 has the lowest rigidity at its center in the Y-axis direction and is prone to displacement due to elastic deformation. Therefore, by engaging the claw portion 533 with the center portion of the fitting hole 43 in the Y-axis direction, the required deformation for engagement can be provided to the corner portion 44 with less force compared to engaging the claw portion 55 with a portion of the fitting hole 43 that is away from the center portion in the Y-axis direction. Furthermore, the deformation applied to the resin forming the terminal mounting portion 41 during engagement is reduced, improving the reliability of the terminal mounting portion 41.

[0046] In this embodiment, the claw portion 533 is bent at a right angle at its root, but the invention is not limited to this configuration. If the forward protrusion of the claw portion 533 can be sufficiently ensured (i.e., the "engagement length L" described later), Figure 6 (This refers to the length of the portion of the claw portion 533 that hooks onto the terminal mounting portion 41 in the X-axis direction), and the bending angle of the claw portion 533 can also be any value.

[0047] At the left and right ends of the joint 53, a first positioning surface 534a perpendicular to the Y-axis direction is formed at a predetermined interval. Figure 3 ) and the second positioning surface 534b ( Figure 4 The Y-axis direction is a direction perpendicular to both the Z-axis direction (first direction), which is the extension direction of the insertion hole 42, and the X-axis direction (second direction), where the protrusion 531 protrudes. The first positioning surface 534a and the second positioning surface 534b constitute a positioning structure (second positioning structure) in the Y-axis direction that positions the connecting part 53 toward the insertion hole 42.

[0048] A conical surface 535a is formed at the lower end of the joint 53. Figure 3 ), 535b and 535c ( Figure 4 This makes it easy to insert the engagement portion 53 of the terminal 50 into the insertion hole 42 of the terminal mounting portion 41.

[0049] Figure 5 as well as Figure 6 These indicate the states in which the terminal 50 is inserted into the insertion hole 42 of the terminal mounting part 41 of the base 40. Figure 5 This indicates the state in which the terminal 50 is inserted into the insertion hole 42 (i.e., before the connecting portion 53 of the terminal 50 reaches the connecting position as the lowest point). Figure 6 This indicates that the terminal 50's connecting portion 53 has reached the connecting position and is then fixed to the terminal mounting portion 41.

[0050] An insertion hole 42 extending vertically is formed on the terminal mounting portion 41 into which the connecting portion 53 of the terminal 50 is inserted, and a fitting hole 43 extending forward from the lower part of the insertion hole 42. The insertion hole 42 and the fitting hole 43 are connected to each other to form an L-shaped hollow portion. The fitting hole 43 opens toward the front wall surface 42b (i.e., the wall surface perpendicular to the X-axis direction) of the insertion hole 42. Furthermore, the cross-sectional shape of the insertion hole 42 and the fitting hole 43 in this embodiment is rectangular, but other cross-sectional shapes are also possible. In addition, in this embodiment, the fitting hole 43 opens outward at the front, and the front of the fitting hole 43 can also be closed.

[0051] The protrusion 531 formed on the connecting portion 53 of the terminal 50 is a positioning structure (first positioning structure) that positions the connecting portion 53 toward the insertion hole 42 in the X-axis direction (second direction) which is orthogonal to the Z-axis direction (first direction) which is the extension direction of the insertion hole 42.

[0052] Terminal 50 is inserted into insertion hole 42 from insertion port 42a via claw portion 533 at the front end. Except for the portion formed by protrusion 531 (more precisely, protrusion 531 and its surrounding portion), the width (size in the Y-axis direction) and thickness (size in the X-axis direction) of the connecting portion 53 are the same as or smaller than the sizes in the Y-axis and X-axis directions of insertion hole 42. Therefore, terminal 50 is inserted into insertion hole 42 without significant resistance before protrusion 531 reaches insertion port 42a.

[0053] The thickness T of the joint 53 in the portion formed by the protrusion 531 Figure 6The protrusion 531 is only slightly larger than the X-axis dimension of the insertion hole 42 by a predetermined size. Therefore, the portion formed by the protrusion 531 is inserted into the insertion hole 42 by pressing. This suppresses the tilting (i.e., wobbling around the Y-axis) and wobbling of the terminal 50 in the X-axis direction, while simultaneously strengthening the pull-out force of the terminal 50. Furthermore, by suppressing the movement of the terminal 50 in the X-axis direction, the hook of the terminal 50's claw portion 533 onto the fitting hole 43 of the terminal mounting portion 41 is less likely to detach, thereby stabilizing the fixation of the terminal 50. Alternatively, the thickness T of the connecting portion 53 in the portion formed by the protrusion 531 can be made approximately the same as the X-axis dimension of the insertion hole 42, so that the protrusion 531 can be inserted into the insertion hole 42 without pressing. In this case, although the pull-out force of the terminal 50 is not strengthened, tilting and wobbling of the terminal 50 in the X-axis direction are prevented. The force required to insert the terminal 50 into the insertion hole 42 is alleviated.

[0054] When the height of the protrusion 531 is increased (the amount of protrusion in the X-axis direction) until the required pressing depth is reached, the terminal mounting portion 41 deforms around the protrusion 531. If the portion engaging with the claw portion 533 of the terminal mounting portion 41 deforms, the engagement disengages, and the terminal 50 easily falls off. Therefore, the protrusion 531 is preferably formed at a position separate from the claw portion 533. In this embodiment, the claw portion 533 is provided at the lower end of the connecting portion 53, and the protrusion 531 is provided at the upper end of the connecting portion 53, thus reducing the pressing effect of the protrusion 531.

[0055] A downwardly gradually forward-moving inclined surface 42d is formed on the lower part of the rear wall of the insertion hole 42 (specifically, the part lower than the top surface 43a of the fitting hole 43). After the claw part 533 reaches the inclined surface 42d, it is gradually pressed forward by the inclined surface 42d as it is inserted downward. The lower part of the front wall 42b of the insertion hole 42 (specifically, the corner 44 where the front wall 42b of the insertion hole 42 intersects the top surface 43a of the fitting hole 43) is pressed forward by elastic deformation using the claw part 533 (specifically, the upper front end 533a of the claw part 533).

[0056] In this embodiment, the inclined surface 42d is a plane, but it can also be a curved surface. In this case, the inclined surface 42d can be, for example, a cylindrical surface with a fixed curvature, or a curved surface with curvature that gradually increases towards the bottom. Alternatively, the inclined surface 42d can also be formed by connecting a curved surface and a plane in a continuous manner (i.e., in a manner where the inclination changes continuously).

[0057] After the upper front part 533a of the claw part 533 passes the corner part 44, the force on the corner part 44 from the claw part 533 disappears, and the corner part 44 restores its original shape (i.e., it shifts backward) using the elastic restoring force. At this time, the claw part 533 uses the inclined surface 42d to press forward a distance L towards the fitting hole. Figure 6 The upper front part 533a is housed in the fitting hole 43. Therefore, even if a force (force in the Z-axis direction) is applied to pull the terminal 50, the upper front part 533a of the claw part 533 will touch the top surface 43a of the fitting hole 43 (specifically, the bottom of the corner 44). Therefore, the upper front part 533a of the claw part 533 cannot disengage from the fitting hole 43, and the pulling out of the terminal 50 from the terminal mounting part 41 is hindered.

[0058] Because the length L (hereinafter referred to as the "engagement" length) of the portion of the upper front end 533a of the jaw portion 533 that engages with the corner portion 44 in the X-axis direction is different, the pulling force will also change. The engagement length L also varies depending on the design of the inclined surface 42d (e.g., the inclination angle and length). That is, the pulling force can be adjusted according to the design of the inclined surface 42d.

[0059] like Figure 6 As shown, the upper front end 533a of the claw portion 533 and the corner 44 of the terminal mounting portion 41 are respectively formed by two intersecting planes (specifically, a plane slightly perpendicular to the X-axis direction and a plane slightly perpendicular to the Z-axis direction) whose edges are not chamfered. In this way, by making the edges of the interlocking parts angular, not only can the effective engagement length L be extended, but also a greater pull-out force can be obtained.

[0060] In this embodiment, the claw portion 533 is formed by bending the substrate of the terminal 50 around the Z-axis (more precisely, a straight line extending in the Z-axis direction). Therefore, the claw portion 533 has relatively low rigidity compared to the torque around the bending axis (Z-axis), but higher rigidity compared to the torque around the Y-axis perpendicular to the bending axis. Here, the Z-axis direction is the extension direction of the insertion hole 42, that is, the direction in which the terminal 50 is inserted into the insertion hole 42. Therefore, when the terminal 50 is pulled out, a torque around the Y-axis perpendicular to the pulling direction is applied to the claw portion 533. Therefore, when the terminal 50 is pulled out, the claw portion 533 is less susceptible to deformation due to pulling force.

[0061] In this embodiment, the jaw portion 533 is bent precisely around a straight line parallel to the Z-axis at its root, but the bending axis may also be slightly parallel to the Z-axis. For example, if the angle between the bending axis and the Z-axis is less than 45 degrees, the jaw portion 533 will deform due to the pulling force.

[0062] In the specific example of this embodiment illustrated, four bases 40 are provided on the spool 30, and four terminal mounting portions 41 are provided on each base 40. However, the present invention is not limited to this configuration. One or more (e.g., 2 to 16) bases 40 may also be provided on the spool 30. Furthermore, one or more (e.g., 2 to 16) terminal mounting portions 41 may also be provided on the bases 40.

[0063] In the specific example of this embodiment illustrated, terminals 50 are mounted on only the upper four of the 16 terminal mounting portions 41 provided on the spool 30. However, the present invention is not limited to this configuration. The number of terminals 50 provided on the spool 30 can be varied depending on the number of coils 20 mounted on the spool 30, etc. Furthermore, in this embodiment, the terminal mounting portions 41, which are more numerous than terminals 50, are arranged in different positions and orientations. With this configuration, it is possible to select and use terminal mounting portions 41 that are suitable for the position and orientation of the circuit connection with the reactor 1, thus increasing the flexibility in the installation of the reactor 1.

[0064] The above describes the embodiments of the present invention, but the present invention is not limited to the structures described above and can have various modifications. For example, at least a portion of the technical structure of one or more embodiments described in the specification may be appropriately combined with well-known technical structures, which is also included within the scope of the present invention.

[0065] In the above embodiment, the claw portion 533 is formed by cutting and bending the substrate to form a protrusion that engages with the fitting hole 43. However, the shape and processing method of the protrusion that engages with the fitting hole 43 are not limited to this structure. For example, instead of the claw portion 533, a structure in which the protrusion formed by half-punching is engaged with the fitting hole 43 may be used.

[0066] In the above embodiment, a spacer is provided on the core 10 by embedding a spacer between the middle leg of the E-type core 11 and the I-type core 12, but the present invention is not limited to this structure. A core without spacers can also be used. In addition, the structure of a spacer-equipped core is not limited to embedding a spacer at the joint of the core; for example, a thick adhesive layer or an air gap can be provided at the joint of the core without using a spacer.

[0067] The core 10 in the above embodiment is an EI-type core formed by combining an E-type core 11 and an I-type core 12, but the present invention is not limited to this structure. The present invention can also be applied to coil devices, for example, which are equipped with various types of cores such as an EE-type core formed by combining a pair of E-type cores, and an O-type core formed by combining a pair of L-type cores, J-type cores, C-type cores, or U-type cores.

[0068] In this embodiment, the base 40 of the terminal block 60 is integrally disposed on the spool 30, but the base 40 may also be mounted on the spool 30 by means of screw fixing or adhesive bonding. Alternatively, a structure in which the base 40 is separated from the spool 30 may also be adopted.

[0069] The above-described embodiment is an example of applying the present invention to reactors; the present invention can also be applied to other types of coil devices such as transistors. Furthermore, the present invention can also be applied to spools for air-core coils. The present invention can also be applied to electronic instruments other than coil devices (or to terminal blocks of electronic instruments other than coil devices).

[0070] Symbol Explanation

[0071] 1. Reactor

[0072] 10. Iron core (core material)

[0073] 20 coils

[0074] 30 spools (bobbin)

[0075] 40 terminal block substrate

[0076] 41 Terminal mounting section

[0077] 42 Insertion Hole

[0078] 43 fitting holes

[0079] 50 terminals

[0080] 53 Joint

[0081] 60 terminal block.

Claims

1. A terminal block, characterized by, include: terminal; and A base having a terminal mounting portion on which the terminal is mounted. The terminal includes a mating portion that engages with the terminal mounting portion. The terminal mounting portion has the following formed: An insertion hole, wherein the connecting portion is capable of being inserted into the insertion hole, and the insertion hole extends in a first direction that is the insertion direction of the connecting portion; and The fitting hole connected to the insertion hole, The connecting part includes a claw portion that engages with the fitting hole. The claw portion protrudes toward the fitting hole by bending its root around a straight line substantially parallel to the first direction.

2. The terminal block as described in claim 1, characterized in that, An inclined surface is formed on the terminal mounting portion to press the connecting portion toward the fitting hole.

3. The terminal block as described in claim 2, characterized in that, The claw portion is disposed at the front end of the joint portion in the first direction. The inclined surface is formed by pressing the front end of the joint toward the fitting hole.

4. The terminal block as described in claim 1, characterized in that, The joint has a first positioning structure for positioning the joint toward the insertion hole in a second direction orthogonal to the first direction.

5. The terminal block as described in claim 4, characterized in that, The first positioning structure is a protrusion that extends in the second direction and contacts the wall of the insertion hole.

6. The terminal block as described in claim 5, characterized in that, The protrusion is formed such that the joint is made slightly larger than the insertion hole in the second direction.

7. The terminal block as described in claim 5, characterized in that, The protrusion is formed at a position separate from the claw in the first direction.

8. The terminal block as described in claim 4, characterized in that, The joint has a second positioning structure for positioning the joint toward the insertion hole in a third direction orthogonal to both the first and second directions.

9. The terminal block as described in claim 8, characterized in that, The second positioning structure includes: A first positioning surface formed at one end of the joint in the third direction and in contact with the wall of the insertion hole; A second positioning surface formed at the other end of the joint in the third direction and in contact with the wall of the insertion hole.

10. The terminal block as claimed in claim 1, characterized in that, The cross-sectional shape of the insertion hole is a rectangle having one side extending in a second direction orthogonal to the first direction. The fitting hole opens toward a wall surface perpendicular to the second direction of the insertion hole.

11. The terminal block as claimed in claim 4, characterized in that, In a third direction orthogonal to the first and second directions, the claw portion is disposed at the center of the connecting portion.

12. The terminal block according to any one of claims 1 to 11, characterized in that, The engagement surfaces of the claw portion and the fitting hole are approximately perpendicular to the first direction.

13. A spool, characterized by, include: The coil is wound around the spool on top of it; The terminal block according to claim 1, The spool portion is integrally formed with the base of the terminal block. The terminal has: The coil's wires and the coil connection part to which they are connected; Terminal section connected to the circuit.

14. A coil arrangement, characterized by include: The spool portion as described in claim 13; A coil wound on the spool portion.

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