JP2023156079A - shield terminal module - Google Patents

Abstract

To provide a shield terminal module which can be connected to a circuit board without soldering.SOLUTION: A shield terminal module comprises: a press-fit terminal; a dielectric member covering the press-fit terminal; a shield member covering the outer circumference of the dielectric member; a resin member fitted to the shield member; and a conductive rubber member fitted to the resin member. The conductive rubber member has: a first end surface facing a circuit board to which a first end of the press-fit terminal is connected; a second end surface which is in contact with an end surface of the shield member; and a first protruding part which protrudes further in the axial direction of the conductive rubber member than the first end surface, and which is continuously provided along the circumferential direction of the conductive rubber member.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to shielded terminal modules.

Patent Document 1 discloses a shielded connector including an inner conductor terminal, a dielectric arranged around the outer periphery of the inner conductor terminal, and an outer conductor terminal arranged around the outer periphery of the dielectric. A shielded connector is attached to the surface of a circuit board. The inner conductor terminal is connected to the conductive path on the surface of the circuit board by soldering. The outer conductor terminal is connected to the shield circuit of the circuit board by soldering.

JP2020-13748A

It is desired that each of the inner conductor terminal and the outer conductor terminal be connected to the circuit board without soldering. Further, it is desirable that the outer conductor terminal be connected to the circuit board in a ring shape so as to surround the entire circumference of the inner conductor terminal. A technique for connecting an outer conductor terminal to a circuit board in a circular manner without soldering has not been sufficiently studied.

In the following description, the inner conductor terminal will be referred to as a press-fit terminal, the dielectric material will be referred to as a dielectric member, and the outer conductor terminal will be referred to as a shield member.

One object of the present disclosure is to provide a shield terminal module that can be connected to a circuit board without soldering.

The shielded terminal module of the present disclosure includes:
A press-fit terminal having a rod-like shape,
a dielectric member covering the press-fit terminal so that a first end and a second end of the press-fit terminal are exposed;
a shield member covering the outer periphery of the dielectric member;
a resin member attached to a region of the shield member near the first end;
a conductive rubber member attached to the resin member,
The resin member has a cylindrical shape surrounding the first end exposed from the dielectric member and the shield member,
The conductive rubber member has a cylindrical shape disposed along the inner peripheral surface of the resin member,
The conductive rubber member is
a first end face facing a circuit board to which the first end is connected;
a second end surface that is in contact with the end surface of the shield member;
A first protrusion protruding from the first end surface in the axial direction of the conductive rubber member and continuously provided along the circumferential direction of the conductive rubber member.

The shield terminal module of the present disclosure can be connected to a circuit board without soldering.

FIG. 1 is a schematic perspective view of a shield terminal module according to an embodiment. FIG. 2 is a bottom view of the shield terminal module of the embodiment. FIG. 3 is a partially enlarged view of a cross-sectional view taken along line III--III in FIG. FIG. 4 is a sectional view showing the first protrusion portion and its vicinity in the conductive rubber member included in the shield terminal module of the embodiment. FIG. 5 is a schematic perspective view of a state in which a resin member and a conductive member included in the shield terminal module of the embodiment are combined. FIG. 6 is a partially enlarged view of the VI-VI cross-sectional view of FIG. FIG. 7 is a sectional view showing a state in which the shield terminal module of the embodiment is connected to a circuit board. FIG. 8 is a side view of a shield terminal module group in which a plurality of shield terminal modules of the embodiment are connected.

[Description of embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.

(1) The shield terminal module according to the embodiment of the present disclosure includes:
A press-fit terminal having a rod-like shape,
a dielectric member covering the press-fit terminal so that a first end and a second end of the press-fit terminal are exposed;
a shield member covering the outer periphery of the dielectric member;
a resin member attached to a region of the shield member near the first end;
a conductive rubber member attached to the resin member,
The resin member has a cylindrical shape surrounding the first end exposed from the dielectric member and the shield member,
The conductive rubber member has a cylindrical shape disposed along the inner peripheral surface of the resin member,
The conductive rubber member is
a first end face facing a circuit board to which the first end is connected;
a second end surface that is in contact with the end surface of the shield member;
A first protrusion protruding from the first end surface in the axial direction of the conductive rubber member and continuously provided along the circumferential direction of the conductive rubber member.

In the shielded terminal module of the present disclosure, the terminals are press-fit terminals. A press-fit terminal is electrically and mechanically connected to a circuit board by being press-fitted into a through hole of the circuit board. Press-fit terminals are connected to conductive paths on a circuit board without soldering. In the shield terminal module of the present disclosure, the shield member is electrically connected to the circuit board via the conductive rubber member. The second end surface of the conductive rubber member is in contact with the end surface of the shield member. The first end surface of the conductive rubber member is arranged so as to face the circuit board. The conductive rubber member includes a first protrusion that protrudes beyond the first end surface. When the first end surface of the conductive rubber member contacts the circuit board, the first protrusion is pressed against the circuit board. Since the conductive rubber member is elastically deformed, the first protruding portion in contact with the circuit board is deformed by a repulsive force against the circuit board. This deformation of the first protrusion ensures good contact between the first protrusion and the circuit board. By bringing the conductive rubber member into contact with both the shield member and the circuit board, the shield member is electrically connected to the shield circuit of the circuit board without soldering. As described above, the shield terminal module of the present disclosure can be connected to a circuit board without soldering.

(2) In (1) above, the conductive rubber member is provided with two grooves provided on the inner circumferential side and the outer circumferential side of the first protruding portion, and each of the two grooves is provided on the first protrusion. The conductive rubber member may be recessed in the axial direction of the conductive rubber member relative to the first end surface so as to connect the side surface of the protrusion and the first end surface.

There is a possibility that the shield terminal module may come off from the circuit board due to the repulsive force from the circuit board acting on the first protrusion. When a groove is provided at the base of the first protrusion, when the shield terminal module is connected to the circuit board, the first protrusion deforms to fill the internal space of the groove due to the repulsive force. The deformation of the first protruding portion relieves the repulsive force, and prevents the shield terminal module from coming off from the circuit board due to the repulsive force.

(3) In (2) above, in a cross section of the conductive rubber member cut along the axial direction of the conductive rubber member, the total area of the internal space of each of the two grooves is equal to The area may be greater than or equal to .

If the total volume of the internal space of each groove is greater than or equal to the volume of the first protrusion, the first protrusion will easily deform to fill the internal space of the groove, and the shield terminal module will be damaged by the repulsive force against the circuit board. It is easy to prevent it from coming off the circuit board.

(4) In any one of (1) to (3) above, the cross-sectional shape of the first protrusion may be triangular.

When the cross-sectional shape of the first protruding portion is triangular, the first protruding portion is easily deformed by the repulsive force from the circuit board.

(5) In any one of (1) to (4) above, the length of the first protruding portion protruding from the first end surface may be 0.15 mm or more and 0.4 mm or less.

When the protrusion length of the first protrusion is 0.15 mm or more, good contact between the first protrusion and the circuit board is easily ensured by deformation of the first protrusion. When the protrusion length of the first protrusion is 0.4 mm or less, the repulsive force against the circuit board does not become too large, and the shield terminal module is easily prevented from coming off from the circuit board.

(6) In any one of (1) to (5) above, the conductive rubber member protrudes from the second end surface in the axial direction of the conductive rubber member and extends along the circumferential direction of the conductive rubber member. The second protrusion portion may be provided continuously.

When the conductive rubber member includes the second protrusion, when the second end face of the conductive rubber member comes into contact with the end face of the shield member, the second protrusion is elastically deformed and comes into contact with the end face of the shield member. Due to the deformation of the second protruding portion, better contact between the conductive rubber member and the shield member is ensured than in the case where the second protruding portion is not provided.

(7) In any one of (1) to (6) above, the conductive rubber member may have a hardness of 40 or more and 50 or less in Shore A hardness.

When the hardness of the conductive rubber member is 40 or more, the shape of the entire conductive rubber member is easily maintained, and the state in which the shield terminal module is connected to the circuit board is easily maintained. If the hardness of the conductive rubber member is 50 or less, it is likely to be deformed by repulsive force from the circuit board.

(8) In any one of (1) to (7) above, the dielectric member includes an outer peripheral surface exposed from the shield member, and the outer peripheral surface faces the inner peripheral surface of the conductive rubber member. You can leave it there.

When the dielectric member is exposed from the shield member, the inner peripheral surface of the conductive rubber member is pressed against the exposed outer peripheral surface of the dielectric member. By this pressing, a distance corresponding to the thickness of the dielectric member is secured between the inner circumferential surface of the conductive rubber member and the first end of the press-fit terminal. The thickness of the dielectric member is the distance between the inner circumferential surface and the outer circumferential surface of the dielectric member. The inner peripheral surface of the dielectric member is in close contact with the outer peripheral surface of the press-fit terminal. Therefore, even if the conductive rubber member is elastically deformed, the distance between the conductive rubber member and the first end of the press-fit terminal is suppressed.

(9) In any one of (1) to (8) above, the resin member has a fixing portion that fixes the resin member to the shield member with the second end face pressed against the end face of the shield member. You may prepare.

When the resin member and the shield member are fixed by the fixing portion, good contact between the conductive rubber member and the shield member is ensured.

[Details of embodiments of the present disclosure]
Specific examples of embodiments of the present disclosure will be described below with reference to the drawings. The same reference numerals in the figures indicate the same names. In each drawing, a part of the configuration may be exaggerated or simplified for convenience of explanation. The dimensional ratio of each part in the drawings may also differ from the actual size. Note that the present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.

<Shield terminal module>
A shield terminal module 1 according to an embodiment will be described with reference to FIGS. 1 to 7. As shown in FIG. 1, the shield terminal module 1 includes a press-fit terminal 2, a dielectric member 3 (FIGS. 2 and 3), and a shield member 4. One of the features of the shield terminal module 1 is that the shield member 4 includes a resin member 5 and a conductive rubber member 6. The resin member 5 is attached to the tip 40 (FIG. 3) of the shield member 4. The conductive rubber member 6 is attached to the resin member 5. The conductive rubber member 6 has a function of electrically connecting the circuit board 10 and the shield member 4 when the shield terminal module 1 is connected to the circuit board 10 shown in FIG. Each configuration will be explained in detail below.

≪Press-fit terminal≫
The press-fit terminal 2 is a rod-shaped member having a first end 21 and a second end 22, as shown in FIG. The first end portion 21 is press-fitted into a through hole 10h formed in the circuit board 10 shown in FIG. By press-fitting the first end portion 21 into the through hole 10h, the press-fit terminal 2 and the circuit board 10 are electrically and mechanically connected.

The shield terminal module 1 includes a plurality of press-fit terminals 2. The shield terminal module 1 of this example includes two press-fit terminals 2. The plurality of press-fit terminals 2 are arranged side by side at intervals. Each press-fit terminal 2 is a signal terminal.

≪Dielectric member≫
The dielectric member 3 is a resin molded body provided so as to cover the plurality of press-fit terminals 2, as shown in FIGS. 2 and 3. The dielectric member 3 is a columnar body. The dielectric member 3 is provided so that the first end 21 and second end 22 of each press-fit terminal 2 are exposed. The dielectric member 3 is arranged between adjacent press-fit terminals 2 and between each press-fit terminal 2 and a shield member 4, which will be described later. The dielectric member 3 is provided to ensure electrical insulation between the plurality of press-fit terminals 2 and between each press-fit terminal 2 and the shield member 4. The dielectric member 3 is designed to match the characteristic impedance at the frequency of the communication signal transmitted to the press-fit terminal 2. The dielectric member 3 is made of an insulating material.

The cross-sectional shape of the dielectric member 3 in this example is a racetrack shape. The cross section of the dielectric member 3 is a cross section obtained by cutting the dielectric member 3 in a direction perpendicular to the longitudinal direction of the dielectric member 3. The racetrack shape is a shape in which the ends of two linear parts that are parallel to each other and have the same length are connected by an arcuate part.

The dielectric member 3 is covered with a shield member 4, which will be described later, as shown in FIG. That is, the outer peripheral surface of the dielectric member 3 faces the shield member 4. The dielectric member 3 of this example includes an exposed portion 30 exposed from the shield member 4. An outer circumferential surface 31 of the exposed portion 30 faces an inner circumferential surface 63 of a conductive rubber member 6, which will be described later. In this example, the outer circumferential surface 31 of the exposed portion 30 is in close contact with the inner circumferential surface 63 of the conductive rubber member 6. By providing the exposed portion 30 in the dielectric member 3, the distance corresponding to the thickness of the dielectric member 3 is established between the inner circumferential surface 63 of the conductive rubber member 6 and the first end portion 21 of the press-fit terminal 2. secured between. The thickness of the dielectric member 3 is the distance between the outer peripheral surface of the dielectric member 3 and the contact surface of the dielectric member 3 with the press-fit terminal 2.

≪Shield member≫
The shield member 4 is a cylindrical member provided so as to cover the outer periphery of the dielectric member 3, as shown in FIGS. 3 and 6. The shield member 4 of this example is a cylindrical member whose long axis is the direction in which the plurality of press-fit terminals 2 are arranged. As shown in FIG. 3, a rod-shaped member 9, which will be described later, is arranged in the direction in which the plurality of press-fit terminals 2 are lined up. The shield member 4 of this example also covers this rod-shaped member 9. A first end 21 and a second end 22 of the press-fit terminal 2 are exposed from the shield member 4. The shield member 4 has shielding performance to shield noise leaking from the press-fit terminal 2.

The shield member 4 is made of, for example, a cast material. The shield member 4 made of cast material is difficult to form a gap on the circumferential surface of the shield member 4 . The shield member 4 made of cast material has excellent shielding performance. The material of the shield member 4 made of cast material is not particularly limited as long as it is a metal with high electrical conductivity. The material of the shield member 4 made of cast material is, for example, a zinc alloy.

The shield member 4 may be made of a conductive resin material. The conductive resin material is, for example, a composite material in which a conductive filler is dispersed in a resin material. The resin material is, for example, polybutylene terephthalate (PBT). The material of the conductive filler is, for example, carbon black or metal.

A resin member 5, which will be described later, is attached to the tip 40 of the shield member 4. The tip portion 40 of the shield member 4 is a region of the shield member 4 that is close to the first end portion 21 of the press-fit terminal 2 . A second end surface 62 of a conductive rubber member 6, which will be described later, is in contact with the end surface 41 of the tip portion 40. The end surface 41 is a surface of the shield member 4 facing in the axial direction. As shown in FIG. 6, a part of the outer peripheral surface of the tip portion 40 is provided with an inclined surface 42 that projects outward from the end surface 41 side toward the rear in the axial direction of the shield member 4. As shown in FIG. The rear of the shield member 4 in the axial direction is a direction toward the second end 22 of the press-fit terminal 2 in the shield member 4 when viewed from the end surface 41. A step 43 is provided between the outer peripheral surface of the shield member 4 rearward of the tip 40 and the inclined surface 42 . The inclined surface 42 and the step 43 are provided at opposing locations on the outer peripheral surface of the shield member 4. The inclined surface 42 and the step 43 in this example are provided on a surface located in a direction perpendicular to both the arrangement direction of the plurality of press-fit terminals 2 and the longitudinal direction of each press-fit terminal 2. A protrusion 512 of a resin member 5, which will be described later, is hooked onto the step 43.

≪Resin parts≫
The resin member 5 is a cylindrical member attached to the tip portion 40 of the shield member 4, as shown in FIGS. 1, 3, and 6. The resin member 5 surrounds a portion of the first end portion 21 of the press-fit terminal 2 exposed from the dielectric member 3 and the shield member 4, as shown in FIGS. 3 and 6. The resin member 5 of this example includes a main body portion 50 and two fixing portions 51, as shown in FIGS. 5 and 6.

The main body portion 50 is a cylindrical portion surrounding a part of the first end portion 21 of the press-fit terminal 2. The tip of the first end portion 21 is exposed from the resin member 5. The end face shape of the main body portion 50 substantially corresponds to the outer shape of the shield member 4. As shown in FIG. 2, the end face shape of the main body portion 50 is a racetrack shape that is long in the direction in which the plurality of press-fit terminals 2 are arranged.

The two fixing parts 51 are provided facing each other, as shown in FIGS. 5 and 6. As shown in FIG. 6, the two fixing parts 51 in this example are provided on a surface located in a direction perpendicular to both the arrangement direction of the plurality of press-fit terminals 2 and the longitudinal direction of each press-fit terminal 2. . Each fixing portion 51 is provided on the shield member 4 side of the main body portion 50. Each fixing part 51 includes a leg part 511 and a protrusion 512, as shown in FIG. The leg portions 511 are plate pieces that protrude in the axial direction of the main body portion 50. The protrusion 512 is provided at the tip of the leg portion 511. The protrusion 512 is provided on the surface where the two leg portions 511 face each other. As shown in FIG. 6, the protrusion 512 is caught on a step 43 provided at the tip 40 of the shield member 4. The fixing portion 51 is configured such that when the protrusion 512 is caught on the step 43, a second end surface 62 of a conductive rubber member 6, which will be described later, is pressed against the end surface 41 of the distal end portion 40. The conductive rubber member 6 is integrated with the resin member 5 as described later. Therefore, for example, the length of the leg portion 511 may be adjusted so that the second end surface 62 is pressed against the end surface 41 of the distal end portion 40 when the protrusion 512 is caught on the step 43.

≪Conductive rubber member≫
The conductive rubber member 6 is a cylindrical member attached to the inner peripheral surface of the resin member 5, as shown in FIGS. 1 to 4 and 6. The conductive rubber member 6 includes a first end surface 61, a second end surface 62, and a first protrusion 71, as shown in FIGS. 3 and 6. The first end surface 61 is a surface facing the circuit board 10 shown in FIG. The second end surface 62 is a surface that is in contact with the end surface 41 of the tip portion 40 of the shield member 4. The first protruding portion 71 is provided on the first end surface 61. The conductive rubber member 6 of this example further includes a first groove 81 and a second groove 82. The first groove 81 and the second groove 82 are also provided in the first end surface 61 .

The conductive rubber member 6 of this example further includes a second protrusion 72, as shown in FIG. The second protruding portion 72 is provided on the second end surface 62. When the conductive rubber member 6 is attached to the shield member 4 via the resin member 5, the second protrusion portion 72 is elastically deformed and crushed. Therefore, in FIGS. 3 and 6, the second protrusion portion 72 shown in FIG. 5 is not shown.

The conductive rubber member 6 of this example includes a flange portion 65 at the end on the first end surface 61 side, as shown in FIGS. 3, 4, and 6. The flange portion 65 is an annular portion that protrudes outward in a direction perpendicular to the axial direction of the conductive rubber member 6. The flange portion 65 covers the end surface of the main body portion 50 of the resin member 5. The first end surface 61 includes the end surface of the flange portion 65.

[First protrusion section]
As shown in FIGS. 3, 4, and 6, the first protruding portion 71 protrudes from the first end surface 61 in the axial direction of the conductive rubber member 6. The first protruding portion 71 is pressed against the circuit board 10 when the shield terminal module 1 is connected to the circuit board 10 shown in FIG. The first protruding portion 71 pressed against the circuit board 10 is deformed by the repulsive force against the circuit board 10. The state in which the shield terminal module 1 is connected to the circuit board 10 will be described later.

The first protruding portion 71 is provided continuously along the circumferential direction of the conductive rubber member 6, as shown in FIG. In FIG. 2, for easy understanding, a first groove 81 and a second groove 82, which will be described later, are hatched. The first protruding portion 71 is arranged between the first groove 81 and the second groove 82. When viewed from the axial direction of the press-fit terminal 2, the shape of the first protrusion 71 is annular, as shown in FIG. When the first protruding portion 71 is provided in an annular shape, the first protruding portion 71 is annularly connected to the circuit board 10 shown in FIG. 7 . That is, the first protruding portion 71 is connected to the circuit board 10 so as to surround the entire circumference of the first end 21 of the press-fit terminal 2 connected to the circuit board 10.

The cross-sectional shape of the first protrusion 71 is, for example, such that the width at the tip is smaller than the width at the base. This cross-sectional shape is, for example, a triangle, as shown in FIGS. 3, 4, and 6. The cross section of the first protruding portion 71 is a cross section obtained by cutting the first protruding portion 71 in a direction perpendicular to the longitudinal direction of the first protruding portion 71 . When the cross-sectional shape of the first protruding portion 71 is triangular, the first protruding portion 71 is easily deformed by the repulsive force from the circuit board 10 shown in FIG. 7 . The cross-sectional shape of the first protruding portion 71 may be semicircular or trapezoidal in which the width at the tip is smaller than the width at the base.

The protrusion length 7L (FIG. 4) of the first protrusion portion 71 from the first end surface 61 is, for example, 0.15 mm or more and 0.4 mm or less. When the protrusion length 7L is 0.15 mm or more, the deformation of the first protrusion 71 tends to ensure good contact between the first protrusion 71 and the circuit board 10 shown in FIG. 7 . When the protrusion length 7L is 0.4 mm or less, the repulsive force against the circuit board 10 shown in FIG. 7 does not become too large, and the shield terminal module 1 is easily prevented from coming off from the circuit board 10.

[First groove and second groove]
As shown in FIG. 2, the first groove 81 and the second groove 82 are continuously provided along the circumferential direction of the conductive rubber member 6 so as to sandwich the first protrusion 71 therebetween. Each of the first groove 81 and the second groove 82 is provided adjacent to the base of the first protruding portion 71, as shown in FIG. The first groove 81 is formed of a conductive rubber member on the inner peripheral side of the first protruding part 71 so as to connect the inner surface 711 of the first protruding part 71 and the first end face 61 flush with each other. 6 is recessed in the axial direction. The second groove 82 is formed on the outer peripheral side of the first protrusion 71 so that the conductive rubber member 6 is connected flush with the outer surface 712 of the first protrusion 71 and the first end face 61 It is recessed in the axial direction. If the first groove 81 and the second groove 82 are provided adjacent to the base of the first protrusion 71, when the shield terminal module 1 is connected to the circuit board 10 shown in FIG. The strip portion 71 deforms so as to fill the internal space of each of the first groove 81 and the second groove 82. Due to this deformation of the first protruding portion 71, the repulsive force against the circuit board 10 is relaxed, and the shield terminal module 1 is difficult to come off from the circuit board 10. In other words, the state in which the shield terminal module 1 is connected to the circuit board 10 is easily maintained.

In a cross section of the conductive rubber member 6 taken along the axial direction of the conductive rubber member 6, the total area of the internal spaces of the first groove 81 and the second groove 82 is greater than or equal to the area of the first protrusion 71. Good to have. On the left side of FIG. 4, the internal spaces of the first groove 81 and the second groove 82 are shown with fine cross hatching, and the first protrusion 71 is shown with coarse cross hatching. The total area of the internal space of each of the first groove 81 and the second groove 82 is the total area of the area shown by fine cross hatching in FIG. 4 . The area of the first protruding portion 71 is the area of the region shown by rough cross hatching in FIG. 4 . When the total area of the internal space is greater than or equal to the area of the first protruding portion 71, the first protruding portion 71 is likely to deform to fill the internal spaces of the first groove 81 and the second groove 82. The area of the internal space of the first groove 81 and the area of the internal space of the second groove 82 may be the same or different. The area of the internal space of each of the first groove 81 and the second groove 82 is a range that provides an escape margin for the first protrusion portion 71 that is deformed when the shield terminal module 1 is connected to the circuit board 10 shown in FIG. You can select as appropriate. Since the deformed first protruding portion 71 escapes into the first groove 81 and the second groove 82, the shield terminal module 1 is easily prevented from coming off from the circuit board 10 due to the repulsive force against the circuit board 10.

Each cross-sectional shape of the first groove 81 and the second groove 82 is, for example, a right-angled trapezoid, as shown in FIG. The cross section of the first groove 81 is a cross section obtained by cutting the first groove 81 in a direction perpendicular to the longitudinal direction of the first groove 81. The outer circumferential surface of the first groove 81 is an inclined surface continuous with the inner surface 711 of the first protrusion 71 . The inner circumferential surface forming the first groove 81 is a flat surface along the axial direction of the conductive rubber member 6 . The cross section of the second groove 82 is a cross section obtained by cutting the second groove 82 in a direction perpendicular to the longitudinal direction of the second groove 82. The inner circumferential surface constituting the second groove 82 is an inclined surface continuous with the outer surface 712 of the first protruding portion 71 . The outer circumference side surface forming the second groove 82 is a flat surface along the axial direction of the conductive rubber member 6. When the cross-sectional shape of each of the first groove 81 and the second groove 82 is the above-mentioned right-angled trapezoid, the first protrusion portion 71 is easily deformed toward the first groove 81 and the second groove 82 due to the repulsive force against the circuit board 10. . The cross-sectional shape of each of the first groove 81 and the second groove 82 may be other shapes such as a triangle, a square, or a semicircle.

[Second protrusion section]
As shown in FIG. 5, the second protruding portion 72 protrudes further in the axial direction of the conductive rubber member 6 than the second end surface 62. The second protruding portion 72 is elastically deformed and crushed when the conductive rubber member 6 is attached to the shield member 4 shown in FIG. 3 via the resin member 5. The shield member 4 and the conductive rubber member 6 are electrically well connected by the crushed second protrusion portion 72 .

The second protruding portion 72 is provided continuously along the circumferential direction of the conductive rubber member 6. The shape of the second protruding portion 72 is annular. When the second protruding portion 72 is provided in an annular shape, the second protruding portion 72 is annularly connected to the shield member 4 shown in FIG. 1 .

The cross-sectional shape of the second protrusion 72 is, for example, such that the width at the tip is smaller than the width at the base. This cross-sectional shape is, for example, a triangle. The cross section of the second protruding portion 72 is a cross section obtained by cutting the second protruding portion 72 in a direction perpendicular to the longitudinal direction of the second protruding portion 72 . When the second protrusion 72 has a triangular cross-sectional shape, the second protrusion 72 is easily connected to the end surface 41 of the shield member 4 shown in FIG. 3 . The cross-sectional shape of the second protruding portion 72 may be semicircular or trapezoidal in which the width at the tip is smaller than the width at the base.

The length of the second protrusion 72 protruding from the second end surface 62 is, for example, 0.15 mm or more and 0.4 mm or less. When the protrusion length is 0.15 mm or more, the deformation of the second protrusion 72 tends to ensure good contact between the second protrusion 72 and the end surface 41 of the shield member 4 shown in FIG. 3 . When the protrusion length is 0.4 mm or less, the repulsive force against the end surface 41 does not become too large, and the conductive rubber member 6 is difficult to come off from the shield member 4.

Grooves (not shown) may be provided on the inner circumferential side and the outer circumferential side of the second protruding portion 72, respectively. Each groove has the same structure as the first groove 81 and the second groove 82 described above.

[Material]
The conductive rubber member 6 is made of a composite material in which a conductive filler is dispersed in a rubber material. The rubber material is, for example, natural rubber or synthetic rubber. The rubber material is, for example, silicone rubber. The material of the conductive filler is, for example, carbon or metal.

The hardness of the conductive rubber member 6 is, for example, 40 or more and 50 or less in Shore A hardness. The hardness of the conductive rubber member 6 depends on the hardness of the rubber material. When the hardness of the conductive rubber member 6 is 40 or more, the shape of the conductive rubber member 6 as a whole is easily maintained, and the state in which the shield terminal module 1 is connected to the circuit board 10 shown in FIG. 7 is easily maintained. If the hardness of the conductive rubber member 6 is 50 or less, the first protrusion 71 is likely to be deformed by the repulsive force from the circuit board 10 when the shield terminal module 1 is connected to the circuit board 10 shown in FIG. .

The conductive rubber member 6 is, for example, an injection molded body integrally formed with the resin member 5. In this case, the resin member 5 and the conductive rubber member 6 can be handled as a single unit. The conductive rubber member 6 can be configured by two-color molding on the inner peripheral surface of the main body portion 50 of the resin member 5, for example, when molding the resin member 5 using a mold.

≪Rod-shaped member≫
The shield terminal module 1 of this example includes two rod-shaped members 9, as shown in FIGS. 1 and 3. The two rod-shaped members 9 are arranged on the outside in the direction in which the plurality of press-fit terminals 2 are lined up. The two rod-shaped members 9 are arranged parallel to the press-fit terminal 2. The two rod-shaped members 9 are part of a carrier used when manufacturing the shield terminal module 1. The career will be discussed later. A protruding piece 90 is provided at the first end of each rod-shaped member 9. The first end of each rod-shaped member 9 is the end located on the second end 22 side of the press-fit terminal 2. A notch 90c is provided on the outer surface of the protruding piece 90. The shape of the notch 90c is, for example, semicircular. Most of each rod-shaped member 9 other than the protruding piece 90 is covered with the shield member 4. The material of the rod-shaped member 9 is, for example, the same metal as the press-fit terminal 2.

<Shield terminal module connected to circuit board>
Referring to FIG. 7, a state in which the shield terminal module 1 is connected to the circuit board 10 will be described. The circuit board 10 is provided with a signal circuit and a ground circuit (not shown).

The first end 21 of the press-fit terminal 2 is press-fitted into the through hole 10h of the circuit board 10 and electrically connected to the signal circuit of the circuit board 10.

When the first end portion 21 is press-fitted into the through hole 10h, the conductive rubber member 6 is pressed against the circuit board 10. When the conductive rubber member 6 is pressed against the circuit board 10, the conductive rubber member 6 is crushed so as to spread outward as a whole. At this time, the first protruding portion 71 (FIGS. 1 to 6) described above is deformed so that the tip side thereof falls toward the outer circumferential side. The first protruding portion 71 is deformed by being crushed by the circuit board 10 so that the side surface thereof comes into contact with the circuit board 10 . The first protruding portion 71 of this example deforms so as to fill the internal space of each of the first groove 81 and the second groove 82. In other words, the first protruding portion 71 enters the first groove 81 and the second groove 82 and is crushed by the repulsive force against the circuit board 10 . The deformation of the first protruding portion 71 ensures good contact between the first protruding portion 71 and the circuit board 10 . The contact between the first protrusion portion 71 and the circuit board 10 is made over the entire circumference so as to surround the press-fit terminal 2 . The shield member 4 is connected to the ground circuit of the circuit board 10 via the conductive rubber member 6. By deforming the first protruding portion 71 so as to fit into the first groove 81 and the second groove 82, the repulsive force against the circuit board 10 is alleviated, and the shield terminal module 1 is prevented from coming off from the circuit board 10. . In other words, the state in which the shield terminal module 1 is connected to the circuit board 10 is maintained well.

In this example, the exposed portion 30 of the dielectric member 3 restricts the elastic deformation of the conductive rubber member 6 inward. Since the outer circumferential surface 31 of the exposed portion 30 and the inner circumferential surface 63 of the conductive rubber member 6 are in close contact, the distance corresponding to the thickness of the dielectric member 3 is between the inner circumferential surface 63 of the conductive rubber member 6 and the press-fit terminal. This is because it is secured between the first end portion 21 of No. 2 and the first end portion 21 of No. 2. Due to this interval, even if the conductive rubber member 6 is elastically deformed, contact between the conductive rubber member 6 and the first end portion 21 of the press-fit terminal 2 is suppressed.

The press-fit terminal 2 is electrically connected to the signal circuit of the circuit board 10 by being press-fitted into the through hole 10h of the circuit board 10. The shield member 4 is electrically connected to the ground circuit of the circuit board 10 via the conductive rubber member 6. As described above, the shield terminal module 1 is connected to the circuit board 10 without soldering.

<Shield terminal module group>
The shield terminal module group 100 will be described with reference to FIG. 8. The shield terminal module group 100 includes a plurality of shield terminal modules 1 and a carrier that connects the plurality of shield terminal modules 1. The carrier of this example includes a first carrier 110 and a second carrier 120.

The shield terminal module group 100 is wound onto a reel (not shown), for example. By winding the plurality of shield terminal modules 1 onto a reel as the shield terminal module group 100, the plurality of shield terminal modules 1 can be easily stored and the plurality of shield terminal modules 1 can be easily transported.

≪First carrier≫
The first carrier 110 connects the second ends 22 of adjacent press-fit terminals 2 so as to connect the plurality of shield terminal modules 1. The first carrier 110 is an elongated plate. In a state where the shield terminal module group 100 is wound onto a reel, the first carrier 110 is bent flatwise. Flatwise bending means bending the first carrier 110, which is an elongated plate, with the long side surface of the cross section inward.

The first carrier 110 includes a plurality of circular holes 110h provided at intervals in the longitudinal direction of the first carrier 110. The plurality of circular holes 110h are used, for example, when winding up and unwinding the shield terminal module group 100 onto a reel.

≪Second career≫
The second carrier 120 is configured by connecting protrusions 90 of adjacent rod-shaped members 9 in adjacent shield terminal modules 1 to each other. When adjacent projecting pieces 90 are connected, one circular hole 120h is formed by the notch 90c (FIG. 1) provided in each projecting piece 90. The second carrier 120 is arranged between adjacent shield terminal modules 1. The circular holes 120h of each second carrier 120 are used, for example, when winding up and unwinding the shield terminal module group 100 onto a reel.

The material of the first carrier 110 and the second carrier 120 is, for example, the same metal as the press-fit terminal 2.

≪Winding form≫
The reel (not shown) includes, for example, a winding drum and two collars. A shield terminal module group 100 is wound around the winding drum. A hole is provided in the center of the winding drum. The winding drum is rotatable around a rotating shaft inserted into the hole. The two collar portions are arranged at both ends of the winding drum in the axial direction with an interval between them.

The shield terminal module group 100 is, for example, wound up in multiple layers on the drum of a reel. When the shield terminal module group 100 is wound up in multiple layers, an intervening member may be arranged between the turns of the shield terminal module group 100 that are adjacent in the radial direction of the reel. The intervening member is, for example, a tape material that is continuous in the winding direction. When the intervening member is disposed, it is easy to prevent damage to the shield terminal module 1 caused by the inner turns and outer turns of the shield terminal module group 100 rubbing against each other.

≪Method for manufacturing shield terminal module group≫
The shield terminal module group 100 is manufactured, for example, by sequentially performing the following first step, second step, third step, and fourth step.

The first step is a step of preparing a long body in which a plurality of terminal groups are connected by a carrier. Each terminal group includes a plurality of press-fit terminals 2 and two rod-shaped members 9 arranged outside in the direction in which the plurality of press-fit terminals 2 are lined up. Each terminal group in this example includes two press-fit terminals 2. The length of the rod-shaped member 9 in each terminal group of this example is longer than that of the rod-shaped member 9 shown in FIG. Specifically, the first end of the rod-shaped member 9 in each terminal group is extended to a position aligned with the first end 21 of the press-fit terminal 2 . The plurality of terminal groups are connected by a first carrier 110, a second carrier 120, and a third carrier (not shown). The third carrier connects the first ends 21 of adjacent press-fit terminals 2 and the first ends of the rod-shaped members 9 so as to connect a plurality of terminal groups. The third carrier has the same configuration as the first carrier 110.

The second step is a step of providing dielectric members 3 on each terminal group in the elongated body. The dielectric member 3 is provided so as to cover the plurality of press-fit terminals 2 in each terminal group. A first end 21 and a second end 22 of the press-fit terminal 2 are exposed from the dielectric member 3.

The third step is a step of providing a shield member 4 around the outer periphery of the dielectric member 3 in the elongated body. The shield member 4 is also provided on the outer periphery of the rod-shaped member 9. The protruding piece 90 of the rod-shaped member 9 is exposed from the shield member 4. After the third step is completed, the third carrier and the first end of the rod-shaped member 9 are cut before the fourth step.

The fourth step is a step of attaching the resin member 5 and the conductive rubber member 6 to the tip portion 40 of the shield member 4 in the elongated body. The resin member 5 and the conductive rubber member 6 are integrally formed in advance. The shield terminal module group 100 shown in FIG. 8 shows a state in which the fourth step has been completed.

The elongated body in each of the above steps is wound onto a reel (not shown), for example. Each carrier is used, for example, when winding up and unwinding a long body onto a reel.

1 Shield terminal module 2 Press-fit terminal, 21 First end, 22 Second end 3 Dielectric member, 30 Exposed portion, 31 Outer surface 4 Shield member 40 Tip, 41 End surface, 42 Inclined surface, 43 Step 5 Resin Members 50 main body part, 51 fixed part, 511 leg part, 512 protrusion 6 conductive rubber member 61 first end face, 62 second end face, 63 inner peripheral face 65 flange part 71 first protrusion part, 711 inner face, 712 outer face 7L Projection length 72 Second protrusion 81 First groove, 82 Second groove 9 Rod-shaped member, 90 Projection piece, 90c Notch 10 Circuit board, 10h Through hole 100 Shield terminal module group 110 First carrier, 110h Circular hole 120 Second carrier, 120h circular hole

Claims (9)

A press-fit terminal having a rod-like shape,
a dielectric member covering the press-fit terminal so that a first end and a second end of the press-fit terminal are exposed;
a shield member covering the outer periphery of the dielectric member;
a resin member attached to a region of the shield member near the first end;
a conductive rubber member attached to the resin member,
The resin member has a cylindrical shape surrounding the first end exposed from the dielectric member and the shield member,
The conductive rubber member has a cylindrical shape disposed along the inner peripheral surface of the resin member,
The conductive rubber member is
a first end face facing a circuit board to which the first end is connected;
a second end surface that is in contact with the end surface of the shield member;
a first protrusion protruding from the first end surface in the axial direction of the conductive rubber member and continuously provided along the circumferential direction of the conductive rubber member;
Shield terminal module. The conductive rubber member includes two grooves provided on the inner circumferential side and the outer circumferential side of the first protruding portion, respectively,
The conductive rubber member according to claim 1, wherein each of the two grooves is recessed in the axial direction of the conductive rubber member relative to the first end surface so as to connect the side surface of the first protruding portion and the first end surface. Shield terminal module. Claim 2, wherein in a cross section of the conductive rubber member cut along the axial direction of the conductive rubber member, the total area of the internal space of each of the two grooves is greater than or equal to the area of the first protrusion. Shielded terminal module as described in . The shield terminal module according to claim 1 or 2, wherein the first protrusion has a triangular cross-sectional shape. The shield terminal module according to claim 1 or 2, wherein a length of the first protruding portion protruding from the first end surface is 0.15 mm or more and 0.4 mm or less. The conductive rubber member includes a second protrusion that protrudes from the second end surface in the axial direction of the conductive rubber member and is continuously provided along the circumferential direction of the conductive rubber member. The shield terminal module according to claim 1 or claim 2. The shield terminal module according to claim 1 or 2, wherein the conductive rubber member has a hardness of 40 or more and 50 or less in Shore A hardness. The dielectric member includes an outer peripheral surface exposed from the shield member,
The shield terminal module according to claim 1 or 2, wherein the outer peripheral surface faces the inner peripheral surface of the conductive rubber member. 3. The shield terminal module according to claim 1, wherein the resin member includes a fixing portion that fixes the resin member to the shield member with the second end surface pressed against the end surface of the shield member.

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