Method for connecting insulated wire and connector, connector suitable for this, and motor

Abstract

To provide a method for connecting an insulated wire and a connector, which is excellent in workability of connection, and a connector and a motor suitable for the same.SOLUTION: In a method for connecting an insulated wire and a connector according to the present disclosure, the insulated wire 90 is moved relative to a terminal 12 of the connector 10 in an axial direction of the insulated wire so that a coating part 91 of the insulated wire 90 is destructed by contact parts 26a2, 26a4 of the terminal 12 and the contact parts 26a2, 26a4 are brought into contact with a conductor part 92 of the insulated wire 90.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a method for connecting an insulated wire and a connector, and a connector and a motor suitable for this method. [Background technology]

[0002] A conventional connector is known, as described in Patent Document 1. The terminal of this connector has a pair of elastic pieces. When an insulated electric wire is pushed into the gap between the pair of elastic pieces, the elastic pieces break the coating of the insulated electric wire and come into contact with the conductor inside the coating. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-27740 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with this connector, after the insulated wire is positioned in the appropriate position relative to the connector, an additional operation is required: operating the slider to push the insulated wire between the pair of elastic pieces. This poses a problem in the ease of connection. For example, it is necessary to secure space on the mounting object (circuit board) for a jig or fingers to operate the slider, which reduces the degree of freedom in arranging other electronic components on the mounting object (circuit board).

[0005] Therefore, an object of the present disclosure is to provide a method for connecting an insulated wire and a connector that is easy to connect, and a connector and a motor suitable for this method. [Means for solving the problem]

[0006] The connection method according to the first aspect is a method for connecting an insulated wire and a connector, in which the insulated wire is moved relative to the terminal of the connector in its axial direction, so that the contact portion of the terminal breaks the coating portion of the insulated wire and brings the contact portion into contact with the conductor portion of the insulated wire.

[0007] In the technology of Patent Document 1, the insulated wire is moved relative to the terminal of the connector in a direction perpendicular to its axial direction (axial orthogonal direction), causing the contact portions formed on the pair of elastic pieces to break the coating and bring the contact portions into contact with the conductor portion inside the coating. In other words, when connecting, it is necessary to move the insulated wire relative to the terminal in the axial orthogonal direction. As a result, an additional slider operation is required. In contrast, in the above-described embodiment, the insulated wire is moved relative to the terminal of the connector in the axial direction, so that the contact portion of the terminal breaks the coating of the insulated wire and brings the contact portion into contact with the conductor of the insulated wire. Therefore, when connecting, it is not necessary to move the insulated wire relative to the terminal in the direction perpendicular to the axial direction, and the additional operation of the slider as described above is not necessary. Therefore, connection workability is excellent.

[0008] A connector according to a second aspect includes a housing portion that forms a housing space into which an insulated electric wire can be inserted along its axial direction, and a contact portion that contacts the conductor portion of the insulated electric wire, and the contact portion is configured to break the coating portion of the insulated electric wire and contact the conductor portion inside the coating portion when the insulated electric wire is inserted into the housing space along its axial direction.

[0009] In the above aspect, the connector includes an accommodating portion that defines an accommodating space and a contact portion that contacts the conductor portion of the insulated wire. The accommodating space is a space into which the insulated wire can be inserted along its axial direction. The contact portion is configured to break the coating of the insulated wire and contact the conductor portion inside the coating when the insulated wire is inserted into the accommodating space along its axial direction. Therefore, by inserting the insulated wire axially into the accommodation space formed by the accommodation portion of the connector, the contact portion can break the coating of the insulated wire and bring the contact portion into contact with the conductor. This allows the connection method according to the first aspect to be implemented, resulting in excellent connection workability. Furthermore, the accommodation space into which the insulated wire can be inserted axially guides the relative axial movement of the insulated wire to a certain extent, making the connector according to this aspect a connector suitable for the connection method according to the first aspect.

[0010] The connector according to a third aspect is the connector of the second aspect, wherein the contact portion is formed on an end portion of a plate-like member.

[0011] In the above aspect, the contact portion is formed at the end of the plate-shaped member, and therefore the contact portion, which easily breaks the covering portion, can be easily formed by press working.

[0012] A fourth aspect of the connector is the third aspect, wherein the thickness direction of the plate-like member having the contact portion formed at an end thereof is perpendicular to the insertion direction of the insulated wire.

[0013] In the above-described embodiment, the thickness direction of the plate-like member having the contact portion formed at the end thereof is perpendicular to the insertion direction of the insulated electric wire. Therefore, the member having the contact portion formed thereon is less likely to bend due to the force from the inserted insulated electric wire. As a result, for example, the contact portion does not damage the coating of the insulated electric wire, and the member having the contact portion formed thereon is prevented from being bent.

[0014] A connector according to a fifth aspect is the connector of any one of the first to fourth aspects, wherein the contact portion includes a protrusion.

[0015] In the above aspect, the contact portion includes a protrusion, which ensures reliable contact between the contact portion and the conductor portion.

[0016] A sixth aspect of the connector is the connector of any one of the first to fourth aspects, wherein the contact portion includes a plurality of protrusions formed at different positions in the insertion direction of the insulated wire.

[0017] In the above aspect, the contact portion includes a plurality of protrusions formed at different positions in the insertion direction of the insulated wire, so that the plurality of protrusions hold the insulated wire at a plurality of different positions in the insertion direction, thereby ensuring that the insulated wire is held securely even when the insulated wire connected to the connector moves and sways due to vibration or impact.

[0018] A seventh aspect of the connector is the connector of any one of the first to sixth aspects, wherein the accommodating portion has a wire receiving surface that faces in a direction perpendicular to the insertion direction of the insulated wire and that contacts the covering portion of the insulated wire.

[0019] In the above-described embodiment, the housing portion has a wire receiving surface that faces perpendicular to the insertion direction of the insulated wire and contacts the sheath of the insulated wire. Therefore, even if the insulated wire connected to the connector moves swaying due to vibration or impact, the wire receiving surface restricts the movement of the insulated wire, thereby preventing wear at the contact portion.

[0020] The connector according to an eighth aspect is based on any one of the first to seventh aspects, wherein the contact portion has a first direction contact portion and a second direction contact portion that contact the conductor portion at mutually different circumferential positions.

[0021] In the above aspect, the contact portion has the first direction contact portion and the second direction contact portion that contact the conductor portion at different circumferential positions, thereby making contact between the contact portion and the conductor portion more reliable.

[0022] A ninth aspect of the connector is any one of the first to sixth aspects, wherein the accommodating portion has a wire receiving surface that faces a direction perpendicular to the insertion direction of the insulated wire and that contacts the coating portion of the insulated wire, and the contact portion has a first direction contact portion and a second direction contact portion that contact the conductor portion at mutually different circumferential positions, and when the portion where the wire receiving surface contacts the insulated wire is defined as a rear portion of the insulated wire, the first direction contact portion and the second direction contact portion contact a front portion of the insulated wire.

[0023] In the above aspect, when the portion of the wire receiving surface that contacts the insulated wire is the rear portion of the insulated wire, the first direction contact portion and the second direction contact portion contact the front portion of the insulated wire, so that the insulated wire inserted into the accommodating space is stably held by the first direction contact portion, the second direction contact portion, and the wire receiving surface.

[0024] A tenth aspect of the connector is the ninth aspect, wherein the accommodating portion has a pair of inward extending portions whose thickness direction is perpendicular to the insertion direction of the insulated electric wire, the first direction contact portion and the second direction contact portion are formed at the ends of the pair of inward extending portions, and imaginary planes extending from the thickness center planes of the pair of inward extending portions intersect with each other forward of the center of the insulated electric wire.

[0025] In the above-described aspect, imaginary planes formed by extending the thickness center planes of the pair of inward extending portions intersect with each other forward of the center of the insulated wire, thereby more stably holding the insulated wire.

[0026] In the connector of the eleventh aspect, in the first aspect, the accommodating portion includes a wire receiving portion that faces in a direction perpendicular to the insertion direction of the insulated wire and has a wire receiving surface that contacts the coating portion of the insulated wire, a pair of inward extending portions that have first direction contact portions and second direction contact portions formed at their ends and that contact the conductor portion at different circumferential positions, and a pair of connecting portions that connect the wire receiving portion and the pair of inward extending portions, and the wire receiving portion, the pair of inward extending portions, and the pair of connecting portions are integrally formed from a plate-shaped member.

[0027] In the above aspect, by forming a plurality of curved portions by bending the plate material, it is possible to form the accommodating portion having the wire receiving portion, the first direction contact portion, and the second direction contact portion, which makes manufacturing easy.

[0028] The connector of the 12th aspect is the 11th aspect, wherein the end of the inward extending portion is formed with an inclined end surface that is inclined with respect to the insertion direction and guides the insulated wire, and the pair of connecting portions each have two curved portions, and of the two curved portions, the tip-side curved portion, which is the curved portion on the inward extending portion side, is formed at a position farther from the center of the insulated wire than the base-side curved portion, which is the curved portion on the wire receiving portion side.

[0029] In the above-described embodiment, the distal curved portion, which is the curved portion closer to the inward extending portion of the connecting portion, is located farther from the center of the insulated wire than the proximal curved portion, which is the curved portion closer to the wire receiving portion. This allows the length of the inclined end face as viewed from the insertion direction to be increased while avoiding an increase in the size of the accommodating portion.

[0030] The connector according to the thirteenth aspect is any one of the first to thirteenth aspects and includes a cylindrical guide portion that is inclined with respect to the insertion direction of the insulated wire and has an inclined guide surface that guides the insulated wire into the accommodating portion and is formed so as to surround the insertion path of the insulated wire.

[0031] In the above aspect, the connector includes a cylindrical guide portion that is inclined with respect to the insertion direction of the insulated wire and has an inclined guide surface that guides the insulated wire into the housing portion and is formed so as to surround the insertion path of the insulated wire. Therefore, the insulated wire is guided into the housing portion by the cylindrical guide portion.

[0032] A fourteenth aspect of the connector is the thirteenth aspect of the connector, wherein the connector comprises a terminal, the terminal comprising the accommodating portion, the cylindrical guide portion, an attachment portion that is attached to an attachment object, and a leg portion that connects the attachment portion and the cylindrical guide portion, and the leg portion is formed with a leg inclined guide surface that is inclined with respect to the insertion direction of the insulated electric wire and guides the insulated electric wire into the accommodating portion.

[0033] In the above aspect, the insulated wire is also guided by the leg portion of the terminal.

[0034] A motor according to a fifteenth aspect comprises a motor shaft, an attachment object assembled along the axial direction of the motor shaft, an insulated electric wire extending in the axial direction, and a connector according to any one of claims 2 to 13 attached to the attachment object and connected to the insulated electric wire.

[0035] The motor of the above aspect uses the connector of the present disclosure, and therefore in a motor having an attachment object that is assembled along the axial direction of the motor shaft, the connector attached to the attachment object can be easily connected to the insulated wire. [Brief explanation of the drawings]

[0036] [Figure 1] FIG. 1 is a perspective view of a connector (connected to an insulated wire). [Figure 2] FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. [Figure 5] FIG. 5 is a cross-sectional view taken at the same cross-sectional position as FIG. 4, showing a state in which the insulated wire is connected. [Figure 6] FIG. [Figure 7] 1 is a cross-sectional view of the connector (attached to the board) taken along a plane (a plane passing through the insertion axis) perpendicular to the front-rear direction. [Figure 8] FIG. 2 is an exploded perspective view schematically showing a part of the motor. [Figure 9] FIG. 2 is a perspective view schematically showing a part of a motor. DETAILED DESCRIPTION OF THE INVENTION

[0037] The connector 10 according to the embodiment will be described below.

[0038] The arrows X, Y, and Z shown in each diagram are directional concepts based on the connector and its components, and do not limit the installation direction when the connector is in use. The +X direction is the front direction of the connector, the +Y direction is one side of the connector's width direction (the left side of the connector), and the +Z direction is the top direction of the connector. When simply referring to the front-to-back direction, width direction (left-to-right direction), or up-to-down direction, it means the front-to-back direction of the connector, the width direction of the connector (left-to-right direction of the connector), and the up-to-down direction of the connector.

[0039] (Connector 10) FIG. 1 is a perspective view of a connector 10 (connected to an insulated wire 90). The connector 10 is composed only of terminals 12 made of a conductive material. The terminals 12 are formed by punching, bending, etc., a conductive plate material. In this way, the terminals 12 are formed as a single, plate-like member. The terminals 12 have a symmetrical shape.

[0040] (Holding part 20) The terminal 12 includes a holding portion 20 .

[0041] The holding portion 20 is a portion that holds a part of the insulated wire 90 . As shown in FIG. 4, the retaining portion 20 has a first curved portion 21, a pair of first connecting portions 22, a pair of second curved portions 23, a pair of second connecting portions 24, a pair of third curved portions 25, and a pair of inward extending portions 26. The plate material is bent at the first bending portion 21, the pair of second bending portions 23, and the pair of third bending portions 25. The pair of first connecting portions 22, the pair of second connecting portions 24, and the pair of inward extending portions 26 are not bent but are flat. In other words, the retaining portion 20 is formed by bending a plate-shaped member at positions corresponding to the first bending portion 21, the second bending portion 23, and the third bending portion 25.

[0042] The holding portion 20 forms an accommodating space 20a. An insulated wire 90 is inserted into the accommodating space 20a in an upward direction along its axial direction. Point C shown in Fig. 4 indicates the center position of the inserted insulated wire 90, and will be referred to as the insertion axis C hereinafter. The insertion axis C is parallel to the vertical direction of the connector.

[0043] The first bent portion 21 and the pair of first connecting portions 22 form wire receiving portions 21, 22 having wire receiving surfaces 21a, 22a that come into contact with the sheath portion 91 (see FIG. 5) of the insulated wire 90. The curvature of the wire receiving surfaces 21a, 22a (specifically, the curvature of the inner surface 21a of the first bent portion 21) is greater than the curvature of the outer shape of the insulated wire 90. The angle formed by the pair of first connecting portions 22 is preferably 90 degrees or more and 120 degrees or less, as shown in the figure.

[0044] The pair of inward extending portions 26 extend inwardly into the accommodation space 20a from the third curved portion 25. As shown in Figures 1, 2, and 3, an end portion 26a of each inward extending portion 26 is formed with an inclined end surface 26a1, a first protrusion 26a2, a first parallel portion 26a3, a second protrusion 26a4, and a second parallel portion 26a5.

[0045] The first parallel portion 26a3 and the second parallel portion 26a5 extend parallel to each other in the up-down direction. The first protrusion 26a2 and the second protrusion 26a4 protrude relative to the first parallel portion 26a3 and the second parallel portion 26a5, and function as "contact portions" that come into contact with the conductor portion 92 of the insulated wire 90. The first protrusion 26a2 is formed below (upstream in the insertion direction) the second protrusion 26a4. The protrusion height of the second protrusion 26a4 is slightly higher than the protrusion height of the first protrusion 26a2. The first protrusion 26a2 and the second protrusion 26a4 (first direction contact portion) formed on the end 26a of one inward extending portion 26 and the first protrusion 26a2 and the second protrusion 26a4 (second direction contact portion) formed on the end 26a of the other inward extending portion 26 are positioned in the same vertical direction. The inclined end surface 26a1 is formed from the lower end of the inward extending portion 26 to the first protrusion 26a2, extends in a direction inclined with respect to the upward direction, and functions to guide the insulated wire 90 toward the insertion axis C. When viewed from the top-bottom direction, the lower end of the inclined end surface 26a1 is located outside a region corresponding to the upper end of the inner surface 32a of the reduced diameter portion 32 of the cylindrical guide portion 30 (described later) (see FIG. 6).

[0046] The dashed dotted line L shown in Figure 5 indicates the thickness center line L (thickness center plane) of the pair of inward extending portions 26. The thickness center line L of the pair of inward extending portions 26 intersects with the insertion axis C (see Figure 4) on the front side. The angle θ at which the thickness center lines L of the pair of inward extending portions 26 intersect is 90 degrees or more and 180 degrees or less, and preferably 110 degrees or more and 130 degrees or less as shown in the figure.

[0047] In this embodiment, the holding portion 20 corresponds to the "accommodating portion," and the first protrusion 26a2 and the second protrusion 26a4 formed on the holding portion 20 correspond to the "contact portion."

[0048] As shown in Fig. 4, the second bending portion 23 is formed at a position closer to the insertion axis C than the third bending portion 25. When viewed from the top-bottom direction, the holding portion 20 is contained within the outer shape area of ​​the cylindrical guide portion 30. As shown in Fig. 3, the wire receiving portions 21 and 22 of the holding portion 20 extend downward further than the other portions 23, 24, 25, and 26.

[0049] (Cylindrical guide portion 30) The terminal 12 includes a cylindrical guide portion 30 .

[0050] The cylindrical guide portion 30 is a substantially cylindrical portion configured to guide the insulated wire 90 into the accommodating space 20a. The cylindrical guide portion 30 is formed to surround the insertion axis C of the insulated wire 90, but a small gap is formed in the front portion of the connector. For this reason, the cross-sectional shape of the cylindrical guide portion 30 (cross-sectional shape perpendicular to the insertion direction) is substantially circular, specifically, arc-shaped. The gap is large enough that the insulated wire 90 cannot pass through.

[0051] The cylindrical guide portion 30 has a constant diameter portion 31 and a reduced diameter portion 32 . The constant diameter portion 31 has a substantially circular cross section perpendicular to the vertical direction, and has a cross section of the same shape and size throughout the vertical direction. The reduced diameter portion 32 has a substantially circular cross section perpendicular to the vertical direction, and the diameter decreases in the upward direction.

[0052] 7, the inner diameter of the cylindrical guide portion 30 is smallest at the upper end of the cylindrical guide portion 30. The minimum inner diameter D1 of the cylindrical guide portion 30 is larger than the diameter of the insulated wire 90, but is preferably 1.2 times or less. The inner diameter of the cylindrical guide portion 30 is greatest at the lower end of the cylindrical guide portion 30. The maximum inner diameter D2 of the cylindrical guide portion 30 is greater than the inner diameter D3 of the wire insertion hole 72 formed in the substrate 70, which is the "attachment object."

[0053] (Extension guide part 40) The terminal 12 includes an extension guide portion 40 .

[0054] The extension guide portion 40 is located above the cylindrical guide portion 30. The extension guide portion 40 is not formed in a cylindrical shape, and is formed on the rear side with respect to the insertion axis C of the insulated wire 90, but not on the front side. The extension guide portion 40 is shaped to smoothly connect a rear portion of the reduced diameter portion 32 of the cylindrical guide portion 30 and the wire receiving portions 21, 22 (the first curved portion 21 and the pair of first connecting portions 22) of the holding portion 20. Therefore, the cross-sectional shape of the lower end of the extension guide portion 40 is an arc shape, and the cross-sectional shape of the upper end of the extension guide portion 40 is the same as the cross-sectional shape of the wire receiving portions 21, 22. The inner surface 40 a of the extension guide portion 40 is inclined upward toward the insertion axis C, and functions to guide the insulated wire 90 to the holding portion 20 .

[0055] (Pair of mounting portions 50) The terminal 12 includes a pair of mounting portions 50 .

[0056] The attachment portion 50 is a portion that is attached to a substrate 70, which is an "attachment target." The mounting portion 50 is in the form of a flat plate that conforms to the surface of the substrate 70, and is surface-mounted on the surface of the substrate 70. A pair of mounting portions 50 are provided on the left and right, each extending outward in the width direction. The mounting portion 50 has an enlarged portion 51 whose dimension (front-to-rear dimension) is enlarged in a direction perpendicular to its extension direction (outer width direction). The enlarged portion 51 is a portion enlarged in the front-to-rear direction, which is a direction perpendicular to the extension direction, relative to the portion of the mounting portion 50 extending from its base end 50a (see FIG. 1) outward in the width direction, which is the extension direction. The mounting portion 50 is formed with an enlarged portion 51 enlarged on the front side and an enlarged portion 51 enlarged on the rear side. Both enlarged portions 51 are rectangular and are formed at the tip end (outer width direction end) of the mounting portion 50. 4, as a result of the formation of the expanded portion 51, the front-to-rear dimension of the attachment portion 50 is substantially the same as the front-to-rear dimension of the cylindrical guide portion 30, and more specifically, is slightly larger than the front-to-rear dimension of the cylindrical guide portion 30. The front end of the expanded portion 51 forms the front end of the entire terminal 12, and the rear end of the expanded portion 51 forms the rear end of the entire terminal 12.

[0057] (Pair of legs 60) The terminal 12 includes a pair of legs 60 .

[0058] The pair of legs 60 are portions that connect the cylindrical guide portion 30 and the pair of attachment portions 50 in the vertical direction. The leg portion 60 is shaped to smoothly connect the base end 50a of the attachment portion 50 and a part of the cylindrical guide portion 30. Therefore, the cross-sectional shape of the lower end of the leg portion 60 is linear, and the cross-sectional shape of the upper end of the leg portion 60 is arc-shaped. 6, the inner surface 60a of the leg portion 60 is inclined upward in a direction approaching the insertion axis C, and functions to guide the insulated wire 90 in a direction approaching the insertion axis C. In a cross section passing through the insertion axis C (which coincides with the central axis of the cylindrical guide portion 30) and parallel to the width direction, the inner surface 60a of the leg portion 60 is not inclined upward, but this cross-sectional position is the only position where it is not inclined. The inner surface 60a of the leg portion 60 that appears in other cross-sectional positions (cross sections passing through the insertion axis C and inclined in the width direction) is inclined upward.

[0059] (Motor 100) Next, the motor 100 according to the embodiment will be described.

[0060] 8 and 9 are schematic diagrams showing a part of the motor 100. FIG. The motor 100 includes a wire-side member 101 having an insulated wire 90 and a connector-side member 102 having a connector 10.

[0061] (wire side member 101) The wire-side member 101 includes a main body 82, a motor shaft 81, and a plurality of insulated wires 90. The main body 82 has a generally cylindrical shape. The main body 82 is mainly made of iron and has a plurality of windings formed thereon. The insulated wires 90 are wound around the windings. However, in Figures 8 and 9, the illustration is simplified and the wound state of the insulated wires 90 is not shown.

[0062] (Connector side member 102) The connector side member 102 includes a substrate 70 and a plurality of connectors 10. The plurality of connectors 10 are attached to the upper surface of the substrate 70. The substrate 70 is circular. A circular shaft insertion hole 71 is formed in the center of the substrate 70. The substrate 70 also has a plurality of wire insertion holes 72 (see FIG. 7 ). The wire insertion holes 72 are formed at positions corresponding to the attachment locations of the connectors 10. The attachment positions of the plurality of connectors 10 are at positions that are the same distance from the shaft insertion hole 71 but are at different circumferential positions. The front direction of the connectors 10 (connector front direction) faces radially outward from the motor 100.

[0063] In the manufacturing process of the motor 100, the connector-side member 102 is assembled to the wire-side member 101 in the axial direction of the motor shaft 81. At this time, the motor shaft 81 is inserted into the shaft insertion hole 71 of the board 70, and the tip of the insulated wire 90 is inserted into the wire insertion hole 72 of the board 70 (see FIG. 7). The tip of the insulated wire 90 that has passed through the wire insertion hole 72 of the substrate 70 is then inserted into the cylindrical guide portion 30 of the terminal 12. The insulated wire 90 inserted into the cylindrical guide portion 30 is guided by the cylindrical guide portion 30 and inserted into the accommodation space 20a of the holder 20. At this time, even if the position of the insulated wire 90 is deviated from the insertion axis C, the insulated wire 90 is guided toward the insertion axis C by the leg portions 60, the extension guide portions 40, and the inclined end surfaces 26a1 of the inward extending portions 26. Furthermore, even after the insulated wire 90 is inserted into the accommodating space 20a, the movement of the insulated wire 90 along the axial direction is guided by the wire receiving portions 21, 22 and the end portions 26a of the inward extending portions 26. When the insulated wire 90 is inserted into the storage space 20a of the holding portion 20, the contact portion (first protrusion 26a2 and second protrusion 26a4) of the holding portion 20 breaks the coating portion 91 of the insulated wire 90 along the axial direction of the insulated wire 90 and comes into contact with the conductor portion 92 (see Figure 5). After the insertion is completed, the insulated wire 90 is held by the wire receiving portions 21 and 22 of the holding portion 20 and the end portion 26a of the inward extending portion 26.

[0064] As a result, each of the multiple insulated wires 90 is electrically connected to each of the multiple connectors 10. That is, when the assembling direction of the connector-side member 102 to the wire-side member 101 is limited to the axial direction of the motor shaft 81, the multiple insulated wires 90 can be connected to the multiple connectors 10 simultaneously.

[0065] When connecting the insulated wire 90 to the connector 10, at least the vicinity of the tip of the insulated wire 90 is set in a state in which its axial direction extends parallel to the motor shaft 81 (see FIG. 8). Although there are no particular limitations on the method for this, in this embodiment, a self-supporting wire (e.g., an enameled wire with a diameter of approximately 1 to 2 mm) is used as the insulated wire 90. It is also preferable to support the insulated wire 90 in a portion other than the vicinity of the tip, as necessary. When using an insulated wire 90 that is not self-supporting (a soft wire), a string or the like may be attached to the tip of the insulated wire 90 and pulled upward in FIG. 8 so that at least the vicinity of the tip of the insulated wire 90 has its axial direction extending parallel to the motor shaft 81.

[0066] <Action and effect> Next, the effects of this embodiment will be described.

[0067] In the method for connecting an insulated wire 90 to a connector 10 according to this embodiment, the insulated wire 90 is moved relative to the terminal 12 of the connector 10 in its axial direction, causing the contact portions 26a2, 26a4 of the terminal 12 to break the coating portion 91 of the insulated wire 90, and bringing the contact portions 26a2, 26a4 into contact with the conductor portion 92 of the insulated wire 90. Therefore, when connecting, it is not necessary to move the insulated wire 90 relative to the terminal 12 in a direction perpendicular to the axial direction, and the additional operation of a slider as in Patent Document 1 is not required. This results in excellent connection workability.

[0068] In this embodiment, the connector 10 includes an accommodating portion (holding portion 20) that forms the accommodating space 20a, and contact portions 26a2, 26a4 that come into contact with the conductor portion 92 of the insulated wire 90. The accommodating space 20a is a space into which the insulated wire 90 can be inserted along its axial direction. The contact portions 26a2, 26a4 are configured to break the coating portion 91 of the insulated wire 90 and come into contact with the conductor portion 92 inside the coating portion 91 when the insulated wire 90 is inserted into the accommodating space 20a along its axial direction. Therefore, by inserting the insulated wire 90 axially into the accommodation space 20a formed by the accommodation portion (holding portion 20) of the connector 10, the contact portions 26a2, 26a4 can destroy the coating portion 91 of the insulated wire 90, causing the contact portions 26a2, 26a4 to contact the conductor portion 92. This allows the above-described connection method to be implemented, resulting in excellent connection workability. Furthermore, the accommodation space 20a, into which the insulated wire 90 can be inserted axially, guides the relative axial movement of the insulated wire 90 to a certain extent, making the connector according to this embodiment suitable for the above-described connection method.

[0069] In this embodiment, the contact portions 26a2 and 26a4 are formed at the end portions of the plate-shaped members (end portions 26a of the inward extending portions 26). Therefore, the contact portions 26a2 and 26a4, which make the covering portion 91 easily breakable, can be easily formed by press working.

[0070] In this embodiment, the thickness direction of the plate-like member (inward extending portion 26 or holding portion 20) on whose end portion contact portions 26a2, 26a4 are formed is perpendicular to the insertion direction of insulated wire 90. Therefore, the member (inward extending portion 26 or holding portion 20) on which contact portions 26a2, 26a4 are formed is less likely to bend due to the force from the inserted insulated wire 90.

[0071] In this embodiment, the contact portions 26a2 and 26a4 are provided with protrusions 26a2 and 26a4, respectively, which ensures reliable contact between the contact portions 26a2 and 26a4 and the conductor portion 92. In particular, in this embodiment, the contact portions 26a2, 26a4 include multiple (two) protrusions 26a2, 26a4 formed at different positions in the insertion direction of the insulated wire 90. Therefore, the multiple protrusions 26a2, 26a4 hold the insulated wire 90 at multiple different positions in the insertion direction, so that the insulated wire 90 is reliably held even when the insulated wire 90 moves in a swinging manner.

[0072] In this embodiment, the accommodating portion (holding portion 20) has wire receiving surfaces 21a and 22a that face in a direction perpendicular to the insertion direction of the insulated wire 90 and contact the sheath portion 91 of the insulated wire. Therefore, even when the insulated wire 90 moves in a swinging manner, the wire receiving surfaces 21a and 22a restrict the movement of the insulated wire 90. As a result, wear of the contact portions 26a2 and 26a4 is prevented.

[0073] In the present embodiment, the contact portions 26a2, 26a4 have the first direction contact portions 26a2, 26a4 and the second direction contact portions 26a2, 26a4 that come into contact with the conductor portion 92 at mutually different circumferential positions. This makes the contact between the contact portions 26a2, 26a4 and the conductor portion 92 more reliable.

[0074] Furthermore, in this embodiment, when the portions of the wire receiving surfaces 21a, 22a that contact the insulated wire 90 are defined as the rear portion of the insulated wire 90, the first direction contact portions 26a2, 26a4 and the second direction contact portions 26a2, 26a4 contact the front portion of the insulated wire 90. Therefore, the insulated wire 90 inserted into the accommodating space 20a is stably held by the first direction contact portions 26a2, 26a4 and the second direction contact portions 26a2, 26a4 and the wire receiving surfaces 21a, 22a. Furthermore, in this embodiment, as shown in Fig. 5, imaginary planes extending from the thickness center plane L of the pair of inward extending portions 26 intersect with each other forward of the center (insertion axis C, Fig. 4) of the insulated wire 90. This makes it possible to more stably hold the insulated wire 90.

[0075] 4, in this embodiment, the wire receiving portions 21, 22, the pair of inward extending portions 26, and the pair of connecting portions 23, 24, 25 are integrally formed from a plate-like member. Therefore, by bending the plate material to form a plurality of curved portions, it is possible to form the accommodating portion (holding portion 20) having the wire receiving portions 21, 22, the first direction contact portions 26a2, 26a4, and the second direction contact portions 26a2, 26a4, which makes manufacturing easy.

[0076] 2, the end 26a of the inward extending portion 26 is formed with an inclined end surface 26a1 that is inclined with respect to the insertion direction and guides the insulated wire 90. As shown in Fig. 4, each of the pair of connecting portions 23, 24, 25 has two curved portions 23, 25, and of the two curved portions 23, 25, the tip-side curved portion 25, which is the curved portion on the inward extending portion 26 side, is formed at a position farther from the center (insertion axis C) of the insulated wire 90 than the base-side curved portion 23, which is the curved portion on the wire receiving portions 21, 22 side. Therefore, the length of the inclined end surface 26a1 when viewed from the insertion direction can be increased while avoiding an increase in the size of the accommodation portion (holding portion 20).

[0077] In addition, as shown in FIG. 6, this embodiment includes a cylindrical guide portion 30 that is inclined with respect to the insertion direction of the insulated wire 90 and has an inclined guide surface 32a that guides the insulated wire 90 into the storage portion (holding portion 20) and is formed so as to surround the insertion path (insertion axis C) of the insulated wire 90. Therefore, the insulated wire 90 is guided by the cylindrical guide portion 30 into the accommodation portion (holding portion 20).

[0078] In addition, in this embodiment, the terminal 12 has a leg portion 60 (FIG. 1) that connects the mounting portion 50 and the cylindrical guide portion 30, and the leg portion 60 has a leg inclined guide surface 60a (FIG. 6) that is inclined with respect to the insertion direction of the insulated electric wire 90 and guides the insulated electric wire 90 into the storage portion (holding portion 20). Therefore, the insulated wire 90 is also guided in the leg portion 60.

[0079] Furthermore, the motor 100 according to this embodiment comprises an attachment object (substrate 70) having a first hole (shaft insertion hole 71) and a second hole (electric wire insertion hole 72), a motor shaft 81 passing through the first hole (shaft insertion hole 71), an insulated electric wire 90 extending alongside the motor shaft 81 and passing through the second hole (electric wire insertion hole 72), and a connector 10 attached to the attachment object (substrate 70) and connected to a portion of the insulated electric wire 90 further forward than the second hole (electric wire insertion hole 72). Since the connector 10 of this embodiment is used, when the movement direction of the object to be attached (board 70) is restricted by the motor shaft 81 in the axial direction of the motor shaft 81, the wire side member 101 including the motor shaft 81 and the insulated wire 90 can be easily connected to the connector side member 102 including the board 70 and the connector 10.

[0080] [Supplementary explanation of the above embodiment] The present disclosure is not limited to the above embodiments.

[0081] In the above embodiment, a connection method using a connector 10 including a holding portion 20 as a "housing portion" has been described. However, the connection method of the present disclosure is not limited to this, and the connector does not need to include a housing portion. That is, in the connection method of the above embodiment, the holding portion 20 as a housing portion guides the relative axial movement of the insulated wire 90 to a certain extent, but a structure separate from the connector may guide the relative axial movement of the insulated wire 90 to a certain extent.

[0082] In the above embodiment, an example has been described in which the connector 10 is configured only with the terminals 12. However, the connector of the present disclosure is not limited to this and may include other components such as a housing that holds the terminals. When the connector includes other components, the other components may include a wire receiving portion, a housing portion, a cylindrical guide portion, etc.

[0083] In the above embodiment, an example has been described in which the holding portion 20 of the terminal 12 functions as the "accommodating portion" and a part of the holding portion 20 functions as the "contact portion," that is, an example in which the contact portion is configured as a part of the accommodating portion. However, the accommodating portion and the contact portion of the present disclosure are not limited to this, and the accommodating portion and the contact portion may have separate configurations.

[0084] In the above embodiment, an example has been described in which the connector 10 is a bottom entry type, but the connector of the present disclosure is not limited to this.

[0085] In the above embodiment, an example has been described in which the holding portion 20 as a housing portion includes the wire receiving portions 21, 22. However, the housing portion of the present disclosure is not limited to this. For example, a configuration may be adopted in which insertion of the insulated wire 90 is guided to a certain extent by providing three or more ends of a plate-shaped member (end 26a of the inward extending portion 26 in the above embodiment).

[0086] In the above embodiment, the pair of first connecting portions 22, the pair of second connecting portions 24, and the pair of inward extending portions 26 are described as being flat plates, but they may also be slightly curved.

[0087] In the above embodiment, an example has been described in which the terminal 12 includes a pair of attachment portions 50. However, the number of attachment portions included in the terminal of the present disclosure is not limited to this, and may be one, or three or more.

[0088] In the above embodiment, an example has been described in which the insulated wire 90 is held perpendicular to the plane of the substrate 70, which is the attachment object (i.e., an example in which the insertion direction is perpendicular to the plane of the substrate 70). However, the present disclosure is not limited to this, and the insulated wire may be held parallel to the plane of the substrate.

[0089] In the above embodiment, an example has been described in which the terminal 12 is made by processing a plate material, but the terminal of the present disclosure is not limited to this and may be made by casting or the like.

[0090] In the above embodiment, an example was described in which the contact portion included the protrusions 26a2 and 26a4. However, the contact portion of the present disclosure is not limited to this. For example, the end portion 26a of the inward extending portion 26 may not have a protrusion, and the parallel portion 26a3 of the end portion 26a may function as the contact portion.

[0091] In the above embodiment, an example has been described in which the contact portion is composed of a first direction contact portion and a second direction contact portion that contact the conductor portion 92 of the insulated wire 90 at different circumferential positions. However, the contact portion of the present disclosure is not limited to this, and may be a contact portion that contacts the conductor portion from only one circumferential direction.

[0092] In the above embodiment, an example has been described in which the front direction (connector front direction) of the connector 10 faces radially outward from the motor 100. However, the connector of the motor of the present disclosure is not limited to this, and the front direction may face radially inward from the motor, or may face in another direction.

[0093] In the above embodiment, an example of a motor has been described in which the movement direction of the attachment object (substrate 70) is limited to the axial direction of the motor shaft 81 by the motor shaft 81. However, the motor of the present disclosure is not limited to this. For example, the attachment object (e.g., substrate) may be attached to the side opposite (the other axial side of the motor shaft) from which the motor shaft extends (one axial side of the motor shaft), and in this case, the attachment object does not need to have a shaft insertion hole. In the above embodiment, an example has been described in which the attachment object (substrate 70) is formed with the electric wire insertion hole 72. However, the attachment object of the present disclosure is not limited to this, and the electric wire insertion hole does not have to be formed. In the above embodiment, the mounting object is the substrate 70. However, the mounting object of the present disclosure is not limited to this, and may be a bus bar (for example, a ring-shaped bus bar). [Explanation of symbols]

[0094] 10 Connectors 12 terminals 20 holding section (accommodating section) 20a Storage Space 21 First curved part (wire receiving part) 21a Inner surface (wire receiving surface) 22 First connection part (wire receiving part) 22a Inner surface (wire receiving surface) 23,24,25 Connection part 23 Second curved part (proximal side curved part) 25 Third curved part (tip side curved part) 26 Inward extension 26a End 26a1 Slanted end face 26a2 First protrusion (contact part) 26a4 Second protrusion (contact part) 30 Cylindrical guide section 32a Inner surface (inclined guiding surface) 40 Extension guide part 50 Mounting part 60 Legs 60a Inner surface (leg inclined guide surface) 70 Circuit board (mounting object) 71 Shaft insertion hole (first hole) 72 Electric wire insertion hole (second hole) 81 Motor shaft 90 Insulated Wire 91 Covering part 92 Conductor 100 motor 101 Wire side member 102 Connector side member C Insertion axis (axis parallel to the insertion direction) L Plate thickness center line (plate thickness center plane)

Claims

1. a receiving portion that forms a receiving space into which the insulated electric wire can be inserted along the axial direction of the insulated electric wire; a contact portion that contacts a conductor portion of the insulated wire; A connector comprising: the contact portion is configured to break a coating of the insulated wire and contact the conductor portion inside the coating when the insulated wire is inserted into the accommodating space along the axial direction of the insulated wire, The storage section is a wire receiving portion having a wire receiving surface that faces in a direction perpendicular to the insertion direction of the insulated wire and that contacts the coating portion of the insulated wire; a pair of inward extending portions each having a first direction contact portion and a second direction contact portion formed at an end thereof, the first direction contact portion and the second direction contact portion being in contact with the conductor portion at different circumferential positions; a pair of connecting portions connecting the wire receiving portion and the pair of inward extending portions; Equipped with the wire receiving portion, the pair of inward extending portions, and the pair of connecting portions are integrally formed from a plate-like member, An inclined end surface, a first protrusion, a parallel portion, and a second protrusion are formed at each end of the pair of inward extending portions in this order from the upstream side to the downstream side in the insertion direction, the inclined end surface is inclined with respect to the insertion direction and functions to guide the insulated wire; the first protrusion and the second protrusion protrude from the parallel portion and function as the contact portion; a lower end of the inclined end face, which is an end on the upstream side in the insertion direction, is formed at a position farther from the center of the insulated wire than the parallel portion; connector.

2. a plate-thickness direction of the plate-shaped member having the contact portion formed at an end thereof is perpendicular to the insertion direction of the insulated electric wire; The connector according to claim 1 .

3. When a portion of the wire receiving surface that contacts the insulated wire is defined as a rear portion of the insulated wire, the first direction contact portion and the second direction contact portion contact a front portion of the insulated wire. The connector according to claim 1 or 2.

4. Imaginary planes formed by extending the thickness center planes of the pair of inward extending portions intersect with each other forward of the center of the insulated electric wire. The connector according to claim 3 .

5. Each of the pair of connecting portions has two curved portions, a distal end curved portion, which is a curved portion on the inward extending portion side of the two curved portions, is formed at a position farther from the center of the insulated wire than a proximal end curved portion, which is a curved portion on the wire receiving portion side of the insulated wire; The connector according to any one of claims 1 to 4.

6. a cylindrical guide portion that is inclined with respect to an insertion direction of the insulated electric wire and that guides the insulated electric wire into the accommodating portion, the inclined guide surface being formed so as to surround an insertion path of the insulated electric wire; The connector according to any one of claims 1 to 5.

7. The connector includes a terminal, The terminal is The storage section; The cylindrical guide portion; an attachment portion that is attached to an attachment object; a leg portion connecting the mounting portion and the cylindrical guide portion, The leg portion is formed with a leg inclined guide surface that is inclined with respect to the insertion direction of the insulated electric wire and guides the insulated electric wire into the accommodating portion. The connector according to claim 6.

8. A motor shaft; an attachment object that is attached along the axial direction of the motor shaft; an insulated wire extending in the axial direction; The connector according to any one of claims 1 to 7, which is attached to the attachment object and connected to the insulated wire; A motor comprising:

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