阅读说明：本技术 L型同轴连接器和带同轴线缆的l型同轴连接器 (L-shaped coaxial connector and L-shaped coaxial connector with coaxial cable ) 是由 冰见佳弘 田中葵 于 2018-05-23 设计创作，主要内容包括：带同轴线缆的L型同轴连接器具备：同轴线缆,其具有中心导体部和在中心导体部四周配置的外部导体部；内部端子,其与同轴线缆的中心导体部连接；外部端子,其与同轴线缆的外部导体部连接；以及绝缘性构件,其配置于内部端子与外部端子之间,在上述带同轴线缆的L型同轴连接器中,外部端子具备：保持部,其沿着同轴线缆和绝缘性构件延伸并对上述同轴线缆和绝缘性构件进行保持；和铆接卡合部,其从保持部朝向同轴线缆铆接,铆接卡合部具有：第1爪部,其在同轴线缆的中心导体部与内部端子连接的部分的周围,与绝缘性构件卡合；和第2爪部,其与同轴线缆的外部导体部卡合,第1爪部形成为延伸至在同轴线缆的轴向上与同轴线缆的外部导体部卡合的位置,由此能够抑制电气特性的劣化。(An L-shaped coaxial connector with a coaxial cable is provided with: a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion; an inner terminal connected to a center conductor portion of the coaxial cable; an external terminal connected to an external conductor portion of the coaxial cable; and an insulating member disposed between the inner terminal and the outer terminal, wherein in the L-shaped coaxial connector with the coaxial cable, the outer terminal includes: a holding portion that extends along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engagement portion that is caulked toward the coaxial cable from the holding portion, the caulking engagement portion including: a 1 st claw part which is engaged with the insulating member around a part where the central conductor part of the coaxial cable is connected with the internal terminal; and a 2 nd claw part engaged with the outer conductor part of the coaxial cable, wherein the 1 st claw part is formed to extend to a position engaged with the outer conductor part of the coaxial cable in the axial direction of the coaxial cable, thereby inhibiting the deterioration of the electrical characteristics.)

1. An L-shaped coaxial connector with a coaxial cable, comprising:

a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion;

an inner terminal connected to the center conductor portion of the coaxial cable;

an external terminal connected to the external conductor portion of the coaxial cable; and

an insulating member disposed between the internal terminal and the external terminal,

the L-shaped coaxial connector with the coaxial cable is characterized in that,

the external terminal includes: a holding portion that extends along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engaging portion caulking from the holding portion toward the coaxial cable,

the caulking engagement portion includes: a 1 st claw portion engaged with the insulating member around a portion where the central conductor portion of the coaxial cable is connected to the internal terminal; and a 2 nd claw part engaged with the outer conductor part of the coaxial cable,

the 1 st claw portion is formed to extend to a position where it engages with the outer conductor portion of the coaxial cable in an axial direction of the coaxial cable.

2. The L-shaped coaxial connector with coaxial cable of claim 1,

the 1 st claw portion is set to be closer to the holding portion than the 1 st claw portion is set to be closer to the holding portion.

3. An L-shaped coaxial connector for connecting a coaxial cable having a central conductor part and an outer conductor part arranged around the central conductor part,

the L-shaped coaxial connector is characterized by comprising:

an inner terminal connected to the center conductor portion of the coaxial cable;

an external terminal connected to the external conductor portion of the coaxial cable; and

an insulating member disposed between the internal terminal and the external terminal,

the external terminal includes: a holding portion that extends along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engaging portion caulking from the holding portion toward the coaxial cable,

the caulking engagement portion includes: a 1 st claw portion engaged with the insulating member around a portion where the central conductor portion of the coaxial cable is connected to the internal terminal; and a 2 nd claw part engaged with the outer conductor part of the coaxial cable,

the 1 st claw portion is formed to extend to a position where it engages with the outer conductor portion of the coaxial cable in an axial direction of the coaxial cable.

4. An L-shaped coaxial connector according to claim 3,

the 1 st claw portion is set to be closer to the holding portion than the 1 st claw portion is set to be in contact with the outer conductor portion.

Technical Field

The present invention relates to an L-type coaxial connector and an L-type coaxial connector with a coaxial cable.

Background

Conventionally, an L-type coaxial connector to which a coaxial cable is connected and an L-type coaxial connector with a coaxial cable are known (for example, see patent document 1).

The L-type coaxial connector of patent document 1 includes: the coaxial cable includes an inner terminal connected to a central conductor portion of the coaxial cable, an outer terminal (housing) connected to an outer conductor portion of the coaxial cable, and an insulating member (bushing) disposed between the inner terminal and the outer terminal. When the coaxial connector is connected to a mating connector, the inner terminal and the outer terminal of the coaxial connector are fitted to the corresponding terminals of the mating connector.

In the coaxial connector of patent document 1, a caulking engaging portion for fixing the insulating member and the inner terminal is provided at the outer terminal as the housing. The caulking engagement portion is constituted by 3 pairs of claw portions that can be bent in the circumferential direction of the coaxial cable. The 1 pair of claws are in contact with the outer conductor part of the coaxial cable to conduct. The other two pairs of jaws are held in contact only with the insulating portion and are not in conduction with the coaxial cable.

Patent document 1 Japanese patent laid-open publication No. 2015-211037

In the coaxial connector of patent document 1, the outer circumference of the coaxial cable except the outer portion of the center conductor portion in the axial direction serves as an outer terminal of the housing and functions as a ground side electrode, but there is a gap between the claw portion contacting the outer conductor portion of the coaxial cable and the claw portion contacting the insulating portion. The gap portion may become an electric gap, which disturbs an electromagnetic field and deteriorates electric characteristics.

Disclosure of Invention

Therefore, an object of the present invention is to solve the above-described problems and provide an L-shaped coaxial connector and an L-shaped coaxial connector with a coaxial cable, which are capable of suppressing deterioration of electrical characteristics.

In order to achieve the above object, an L-shaped coaxial connector with a coaxial cable according to the present invention includes: a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion; an inner terminal connected to the center conductor portion of the coaxial cable; an external terminal connected to the external conductor portion of the coaxial cable; and an insulating member disposed between the inner terminal and the outer terminal, wherein in the L-shaped coaxial connector with the coaxial cable, the outer terminal includes: a holding portion that extends along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engaging portion that is caulked from the holding portion toward the coaxial cable, the caulking engaging portion including: a 1 st claw portion that engages with the insulating member around a portion of the coaxial cable where the central conductor portion and the internal terminal are connected; and a 2 nd claw portion engaged with the outer conductor portion of the coaxial cable, wherein the 1 st claw portion is formed to extend to a position engaged with the outer conductor portion of the coaxial cable in an axial direction of the coaxial cable.

Further, an L-type coaxial connector according to the present invention is an L-type coaxial connector for connecting a coaxial cable having a center conductor portion and outer conductor portions arranged around the center conductor portion, the L-type coaxial connector including: an inner terminal connected to the center conductor portion of the coaxial cable; an external terminal connected to the external conductor portion of the coaxial cable; and an insulating member disposed between the internal terminal and the external terminal, the external terminal including: a holding portion that extends along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engaging portion that is caulked from the holding portion toward the coaxial cable, the caulking engaging portion including: a 1 st claw portion that engages with the insulating member around a portion of the coaxial cable where the central conductor portion and the internal terminal are connected; and a 2 nd claw portion engaged with the outer conductor portion of the coaxial cable, wherein the 1 st claw portion is formed to extend to a position engaged with the outer conductor portion of the coaxial cable in an axial direction of the coaxial cable.

According to the L-shaped coaxial connector and the L-shaped coaxial connector with a coaxial cable of the present invention, deterioration of electrical characteristics can be suppressed.

Drawings

Fig. 1 is a perspective view of a plug cable of the embodiment.

Fig. 2 is a perspective view of the counterpart connector connected to the plug cable of the embodiment.

Fig. 3 is a top view of an embodiment plug cable.

Fig. 4 is a rear view of the plug cable of the embodiment.

Fig. 5 is an exploded perspective view of the plug cable of the embodiment.

Fig. 6 is a perspective view showing a state before completion of the plug cable of the embodiment.

Fig. 7 is a top view of fig. 6.

Fig. 8 is an X-X sectional view of fig. 7.

Fig. 9A is a perspective view of an internal terminal used in the plug cable of the embodiment.

Fig. 9B is a plan view of an internal terminal used in the plug cable of the embodiment.

Fig. 9C is a longitudinal sectional view of the internal terminal used in the plug cable of the embodiment.

Detailed Description

According to the 1 st aspect of the present invention, there is provided an L-shaped coaxial connector with a coaxial cable, comprising: a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion; an inner terminal connected to the center conductor portion of the coaxial cable; an external terminal connected to the external conductor portion of the coaxial cable; and an insulating member disposed between the inner terminal and the outer terminal, wherein in the L-shaped coaxial connector with the coaxial cable, the outer terminal includes: a cylindrical portion extending in a cylindrical shape in a direction intersecting an axial direction of the coaxial cable; a holding portion that extends from the cylindrical portion along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engaging portion that is caulked from the holding portion toward the coaxial cable, the caulking engaging portion including: a 1 st claw portion that engages with the insulating member around a portion of the coaxial cable where the central conductor portion and the internal terminal are connected; and a 2 nd claw portion engaged with the outer conductor portion of the coaxial cable, wherein the 1 st claw portion is formed to extend to a position engaged with the outer conductor portion of the coaxial cable in an axial direction of the coaxial cable.

According to such a configuration, as compared with the case where the 1 st claw portion is not electrically connected to the external conductor portion, it is possible to prevent an electric gap from being generated in the axial direction of the coaxial cable, and it is possible to suppress deterioration of electric characteristics.

According to the 2 nd aspect of the present invention, there is provided the L-shaped coaxial connector with a coaxial cable according to the 1 st aspect further having the following configuration, wherein a portion of the 1 st claw portion which is in contact with the insulating member is set to be closer to the holding portion than a portion of the 1 st claw portion which is in contact with the outer conductor portion. According to this configuration, the 1 st claw portion that is in contact with the insulating member can be extended in the axial direction of the coaxial cable to be in contact with the outer conductor portion, and the 1 st claw portion can be pressed against and brought into contact with the outer conductor portion. This makes it possible to reliably ensure contact between the 1 st claw and the external conductor portion with a simple configuration.

According to the 3 rd aspect of the present invention, there is provided an L-shaped coaxial connector to which a coaxial cable having a center conductor portion and an outer conductor portion arranged around the center conductor portion is connected, the L-shaped coaxial connector including: an inner terminal connected to the center conductor portion of the coaxial cable; an external terminal connected to the external conductor portion of the coaxial cable; and an insulating member disposed between the internal terminal and the external terminal, the external terminal including: a holding portion that extends along the coaxial cable and the insulating member and holds the coaxial cable and the insulating member; and a caulking engaging portion that is caulked from the holding portion toward the coaxial cable, the caulking engaging portion including: a 1 st claw portion that engages with the insulating member around a portion of the coaxial cable where the central conductor portion and the internal terminal are connected; and a 2 nd claw portion engaged with the outer conductor portion of the coaxial cable, wherein the 1 st claw portion is formed to extend to a position where the outer conductor portion of the coaxial cable is engaged in an axial direction of the coaxial cable.

According to such a configuration, as compared with the case where the 1 st claw portion is not electrically connected to the external conductor portion, it is possible to prevent an electric gap from being generated in the axial direction of the coaxial cable, and it is possible to suppress deterioration of electric characteristics.

According to the 4 th aspect of the present invention, there is provided the L-type coaxial connector according to the 3 rd aspect, wherein a portion of the 1 st claw portion which is in contact with the insulating member is set to be closer to the holding portion than a portion of the 1 st claw portion which is in contact with the outer conductor portion. According to this configuration, the 1 st claw portion that is in contact with the insulating member can be extended in the axial direction of the coaxial cable to be in contact with the outer conductor portion, and the 1 st claw portion can be pressed against and brought into contact with the outer conductor portion. This makes it possible to reliably ensure contact between the 1 st claw and the external conductor portion with a simple configuration.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

(embodiment mode)

Fig. 1 is a perspective view showing an L-shaped coaxial connector with a coaxial cable (hereinafter referred to as a plug cable) 2 according to an embodiment.

The plug cable 2 shown in fig. 1 includes a coaxial cable 4 and an L-shaped coaxial connector (1 st connector) 6 to which the coaxial cable 4 is connected. When the plug cable 2 is used, the L-shaped coaxial connector 6 is fitted to the mating connector (2 nd connector) 8 shown in fig. 2.

In the present embodiment, the counterpart connector 8 shown in fig. 2 includes: an internal terminal (center socket) 9, an external terminal 11, and an insulating member (resin mold case) 13 disposed between the internal terminal 9 and the external terminal 11.

The L-shaped coaxial connector 6 shown in fig. 1 is connected to the coaxial cable 4, and the mating connector 8 shown in fig. 2 is mounted on a rear surface of the external terminal 11 on a substrate (not shown). That is, unlike a so-called "board-to-board" in which a "board" and a "board" are connected, the combination of the plug cable 2 and the counterpart connector 8 of the present embodiment is a connection form in which a "coaxial cable" and a "board" are connected.

The internal terminal 9 shown in fig. 2 has a female shape that receives a male-shaped terminal. Thereby, the counterpart connector 8 becomes a receptacle for the plug cable 2 shown in fig. 1. Further, the male shape has a contact surface at the outer peripheral portion, and the female shape has a contact surface at the inner peripheral portion.

Next, each component of the plug cable 2 will be described with reference to fig. 1, 3 to 8. Fig. 3 is a plan view of the plug cable 2, fig. 4 is a rear view of the plug cable 2, and fig. 5 is an exploded perspective view of the plug cable 2. Fig. 6 is a perspective view showing a state after the respective components shown in fig. 5 are arranged in the plug cable 2 and before they are fixed, fig. 7 is a plan view of fig. 6, and fig. 8 is an X-X sectional view of fig. 7.

As shown in fig. 5 and the like, the coaxial cable 4 includes a central conductor portion (core wire) 10, an insulator 12, an outer conductor portion 14, and an insulating coating (sheath) 16. The center conductor portion 10, the insulator 12, the outer conductor portion 14, and the insulating film 16 are exposed in this order from the distal end side of the coaxial cable 4 in the axial direction a of the coaxial cable 4.

An inner terminal 18 of an L-type coaxial connector 6 described later is connected to the center conductor portion 10, and an outer terminal 22 of the L-type coaxial connector 6 described later is connected to the outer conductor portion 14.

The L-type coaxial connector 6 to which the coaxial cable 4 is connected has an inner terminal (center pin) 18, an insulating member (bushing) 20, and an outer terminal (housing) 22.

As described above, the internal terminal 18 is a terminal connected to the central conductor portion 10 of the coaxial cable 4. Similarly, the external terminal 22 is a terminal connected to the external conductor portion 14 of the coaxial cable 4. The internal terminal 18 and the external terminal 22 are electrically insulated from each other by an insulating member 20.

The internal terminal 18 of the present embodiment is made of one metal plate. Also, the external terminal 22 is made of one metal plate. The internal terminal 18 and the external terminal 22 are made of a conductive material, and in the present embodiment, the surface of the copper alloy material is plated with nickel or gold.

The insulating member 20 is disposed between the internal terminal 18 and the external terminal 22, and electrically insulates the internal terminal 18 and the external terminal 22 from each other. The insulating member 20 is formed using a resin such as a liquid crystal polymer as a main material.

As shown in fig. 5 and the like, the internal terminal 18 includes a 1 st terminal portion 24 and a 2 nd terminal portion 26.

The 1 st terminal portion 24 is a terminal portion inserted into the internal terminal 9 of the counterpart connector 8. The 1 st terminal portion of the present embodiment is configured as a male type having a contact surface on an outer peripheral portion. By making the internal terminal 18 a male type (pin type), it is possible to make the size smaller than a female type (socket type) that is the internal terminal 9 of the counterpart connector 8.

The 1 st terminal portion 24 of the present embodiment is configured as a substantially cylindrical member extending in an insertion direction B, which is a direction orthogonal to the axial direction a of the coaxial cable 4.

In the present embodiment, the 1 st terminal portion 24 is provided with an insertion hole 28. The insertion hole 28 is a hole for inserting a projection 46 of the insulating member 20 described later. By inserting the protruding portion 46 into the insertion hole 28, the strength of the 1 st terminal portion 24 can be enhanced while suppressing a decrease in strength associated with the downsizing of the 1 st terminal portion 24. The 1 st terminal portion 24 will be described in more detail later.

The 2 nd terminal portion 26 is a plate-like terminal portion extending in the lateral direction from the 1 st terminal portion 24. In the assembled state shown in fig. 6 and 7, the 2 nd terminal portion 26 is connected to the central conductor portion 10 of the coaxial cable 4. The 2 nd terminal portion 26 of the present embodiment is a flat plate-like member perpendicular to the insertion direction B.

A bifurcated two-pronged portion 30 is provided at the end of the 2 nd terminal portion 26. In the assembled state shown in fig. 6 and 7, the bifurcated portion 30 is arranged so as to sandwich the central conductor portion 10 of the coaxial cable 4 in the width direction C. The width direction C is a direction perpendicular to both the axial direction a and the insertion direction B. The two fork portions 30 and the center conductor portion 10 are fixed to each other by welding.

Next, as shown in fig. 5 and the like, the insulating member 20 includes a base portion 44, a protruding portion 46, and a terminal portion 48.

The base portion 44 is a member that serves as a base of the insulating member 20. The base portion 44 is housed in the external terminal 22 as a housing. The base portion 44 is formed with a protruding portion 46 and a distal end portion 48.

The protruding portion 46 is a member protruding from the base portion 44 in the insertion direction B. The protruding portion 46 has a function of reinforcing the strength of the 1 st terminal portion 24 by inserting the insertion hole 28 of the 1 st terminal portion 24 of the internal terminal 18 as described above.

The distal end portion 48 is a member provided at the distal end of the base portion 44 in the axial direction a. In the present embodiment, the distal end portions 48 are provided as a pair of members that are provided at intervals in the width direction C.

The tip portion 48 has: in the assembled state shown in fig. 6 and 7, the function of holding and fixing the coaxial cable 4 is to contact the insulator 12 of the coaxial cable 4. Thus, the tip portion 48 has: a function of holding a connection portion where the coaxial cable 4 is connected to the internal terminal 18, that is, a connection portion where the center conductor portion 10 of the coaxial cable 4 is connected to the bifurcated portion 30 of the internal terminal 18.

Next, as shown in fig. 5 and the like, the external terminal 22 includes a cylindrical portion 32, a holding portion 34, a fixing portion 35, and a caulking engaging portion 36 (fig. 1).

The cylindrical portion 32 is a cylindrical member fitted to the external terminal 11 of the mating connector 8. The cylindrical portion 32 of the present embodiment has a cylindrical (substantially cylindrical) shape extending in the insertion direction B. In the assembled state shown in fig. 6 and 7, the 1 st terminal portion 24 of the internal terminal 18 is arranged inside the cylindrical portion 32.

By making the cylindrical portion 32 of the external terminal 22 cylindrical and the 1 st terminal portion 24 of the internal terminal 18 cylindrical, a constant distance can be maintained between them in a radial direction perpendicular to the insertion direction B without locally narrowing them. This prevents a decrease in characteristic impedance due to an increase in capacitance between the cylindrical portion 32 and the 1 st terminal portion 24, and as a result, prevents deterioration in reflection characteristics.

The holding portion 34 is a plate-like member extending in the lateral direction from the cylindrical portion 32. The holding portion 34 is arranged along the insulating member 20 and the coaxial cable 4 in the assembled state shown in fig. 6 and 7, and holds the insulating member 20 and the coaxial cable 4. The holding portion 34 is formed with a cylindrical portion 32, a fixing portion 35, and a caulking engagement portion 36 (see fig. 1).

The fixing portion 35 is a plate-shaped member provided to protrude from the holding portion 34 in the insertion direction B. In the assembled state shown in fig. 6 and 7, the fixing portions 35 are arranged so as to sandwich the terminal portions 48 of the insulating member 20 in the width direction C. The fixing portion 35 disposed in this way has a function of fixing the terminal portion 48 and the coaxial cable 4 disposed inside the terminal portion 48.

The caulking engaging portion 36 is a member caulked toward the coaxial cable 4 and the insulating member 20. The coaxial cable 4 and the insulating member 20 are integrally fixed by caulking the caulking engaging portion 36.

The caulking engaging portion 36 of the present embodiment is constituted by a plurality of claw portions bent from the holding portion 34 toward the coaxial cable 4 in the circumferential direction D of the coaxial cable 4. Specifically, the 1 st claw portion 38, the 2 nd claw portion 40, and the 3 rd claw portion 42 are provided. As shown in fig. 5 and the like, the 1 st claw portion 38, the 2 nd claw portion 40, and the 3 rd claw portion 42 are each constituted by a pair of plate-like members provided at an interval in the width direction C.

The respective functions of the claw portion will be described with reference to fig. 6 and 7.

As shown in fig. 6 and 7, the 1 st claw portion 38 is swaged so as to be in contact with the terminal portion 48 of the insulating member 20 located around the insulator 12 of the coaxial cable 4. The 1 st claw portion 38 that contacts the distal end portion 48 has: the function of holding/fixing the connection position where the center conductor portion 10 of the coaxial cable 4 is connected to the bifurcated portion 30 of the inner terminal 18.

The 2 nd claw portion 40 is caulked to contact the outer conductor portion 14. The 2 nd claw portion 40 that is in contact with the outer conductor portion 14 has a function of electrically connecting the outer terminal 22 and the coaxial cable 4.

The 3 rd claw portion 42 is caulked so as to contact the insulating film 16 of the coaxial cable 4. The 3 rd claw portion 42 which is in contact with the insulating film 16 has a function of holding/fixing the coaxial cable 4.

The plug cable 2 shown in fig. 1 is manufactured by caulking the 1 st claw portion 38, the 2 nd claw portion 40, and the 3 rd claw portion 42 described above. The plug cable 2 shown in fig. 1 is held and fixed in a state where the inner terminal 18 is connected to the central conductor portion 10 of the coaxial cable 4 and the outer terminal 22 is connected to the outer conductor portion 14 of the coaxial cable 4. By fitting the L-shaped coaxial connector 6 of the plug cable 2 shown in fig. 1 to the mating connector 8, the coaxial cable 4 connected to the L-shaped coaxial connector 6 is electrically connected to the board on which the mating connector 8 is mounted, and high-frequency signals can be transmitted.

In such a configuration, as shown by a broken line E in fig. 7 and 8, the 1 st claw portion 38 extends to a position where it contacts the outer conductor portion 14 in the axial direction a of the coaxial cable 4. The broken line E indicates the position of the tip of the 1 st claw portion 38 in the axial direction a. By bringing the 1 st claw portion 38 into contact with the external conductor portion 14, not only the 2 nd claw portion 40 but also the 1 st claw portion 38 are brought into electrical conduction with the external conductor portion 14. In this way, the 1 st claw portion 38 has a function of holding and fixing the connection portion of the center conductor portion 10 and the bifurcated portion 30 of the inner terminal 18 by contacting the distal end portion 48, and also has another function of conducting electricity with the outer conductor portion 14.

In the caulking engaging portion 36, only the 2 nd claw portion 40 may be brought into contact with the outer conductor portion 14, and the 1 st claw portion 38 may not be brought into contact with the outer conductor portion 14. In the case of such a configuration, in the completed plug cable 2 shown in fig. 1, an electrical gap may be generated between the 2 nd claw portion 40 that is in electrical communication with the external conductor portion 14 and the 1 st claw portion 38 that is not in electrical communication with the external conductor portion 14, thereby disturbing the electromagnetic field. As a result, there is a case where the electrical characteristics of the plug cable 2 deteriorate.

In the plug cable 2 of the present embodiment, not only the 2 nd claw portion 40 is brought into contact with the outer conductor portion 14 to conduct, but also the 1 st claw portion 38 is brought into contact with the outer conductor portion 14 to conduct. Therefore, the generation of the electrical gap in the axial direction a in the external terminal 22 can be prevented. As shown in fig. 1, the 1 st claw portion 38 and the 2 nd claw portion 40 are spaced apart from each other, but the external conductor portion 14 is disposed therebetween, and therefore, no electrical gap is generated. With this configuration, the electrical characteristics of the plug cable 2 can be improved, and a high-frequency signal can be stably transmitted.

In the present embodiment, as shown in fig. 8, the portion where the 1 st claw portion 38 contacts the distal end portion 48 of the insulating member 20 is set to be closer to the holding portion 34 of the external terminal 22 than the portion where the 1 st claw portion 38 contacts the external conductor portion 14 is to the holding portion 34 of the external terminal 22. Specifically, the height position H1 of the terminal portion 48 of the insulating member 20 is set lower than the height position H2 of the outer conductor portion 14. Thus, a distance L1 from the portion where the 1 st claw 38 contacts the distal end portion 48 of the insulating member 20 to the holding portion 34 is made shorter than a distance L2 from the portion where the 1 st claw 38 contacts the external conductor portion 14 to the holding portion 34. According to such an arrangement, when the 1 st claw portion 38 in contact with the distal end portion 48 is extended in the axial direction a to be in contact with the outer conductor portion 14, the 1 st claw portion 38 can be pressed and brought into contact with the outer conductor portion 14. This can reliably ensure contact between the 1 st claw portion 38 and the outer conductor portion 14 with a simple configuration.

In the plug cable 2 having the above-described configuration, as shown in fig. 8, the projecting portion 46 of the insulating member 20 is inserted into the 1 st terminal portion 24 of the internal terminal 18. This reinforces the inner terminal 18 from the inside, and increases the strength of the inner terminal 18.

In the present embodiment, the 1 st terminal portion 24 is provided in the internal terminal 18 as described above, and is a male type to be inserted into the internal terminal 9 of the counterpart connector 8. This eliminates the need to secure elasticity as in the case of the female mold, and the internal terminal 18 can be made small. Even if the inner terminal 18 is made smaller, the projecting portion 46 of the insulating member 20 is inserted into and engaged with the insertion hole 28 of the 1 st terminal portion 24, so that the strength of the inner terminal 18 is enhanced. This can suppress a decrease in strength associated with the miniaturization of the internal terminal 18. By reducing the overall shape of the internal terminal 18 in this way, it is possible to suppress capacitive coupling with the external terminals 22 arranged around the internal terminal 18, suppress deterioration of electrical characteristics, and achieve downsizing, particularly low profile, of the plug cable 2.

Next, the detailed structure of the internal terminal 18 will be described with reference to fig. 9A to 9C. Fig. 9A is a perspective view of the internal terminal 18, fig. 9B is a plan view of the internal terminal 18, and fig. 9C is a longitudinal sectional view (corresponding to the X-X section of fig. 7) of the internal terminal 18.

As shown in fig. 9A and 9C, the 1 st terminal portion 24 of the present embodiment is formed in a rounded tubular shape with rounded ends. Specifically, the 1 st terminal portion 24 includes a cylindrical portion 50 and a convex portion 52.

The cylindrical portion 50 is a cylindrical member, and one side thereof is connected to the 2 nd terminal portion 26 and the other side thereof is connected to the convex portion 52. The convex portion 52 protrudes from the cylindrical portion 50 in the insertion direction B. The convex portion 52 constitutes a distal end portion of the 1 st terminal portion 24 in the insertion direction B.

The convex portion 52 of the present embodiment forms a curved surface 52 a. The surface 52a is a surface continuously extending from the outer peripheral surface of the cylindrical portion 50, and is curved toward the center side of the 1 st terminal portion 24 without an edge. By forming such a surface 52a, the terminal portions of the 1 st terminal portions 24 are not angular but rounded. By thus rounding not only the cylindrical portion 50 but also the convex portion 52, the capacitive coupling with the external terminal 22 provided around the cylindrical portion can be suppressed more than in the case of a chamfered shape, and the deterioration of the electrical characteristics of the plug cable 2 can be suppressed.

In the present embodiment, the insertion hole 28 is formed as a through hole that penetrates both the cylindrical portion 50 and the convex portion 52 in the insertion direction B. By forming the insertion hole 28 as a through hole, 2 openings 28A and 28B are formed at both ends of the 1 st terminal portion 24 in the insertion direction B (fig. 9C). The cylindrical portion 50 is formed with a 1 st opening 28A, and the convex portion 52 is formed with a 2 nd opening 28B. The 1 st opening 28A is formed in the base end portion 51 of the 1 st terminal portion 24, and the 2 nd opening 28B is formed in the tip end portion (convex portion 52) of the 1 st terminal portion 24.

Fig. 9C illustrates that the 1 st opening 28A and the 2 nd opening 28B have the same diameter, but fig. 9C is a schematic view and is not limited to the same diameter. For example, as shown in fig. 8, the diameter of the 1 st opening 28A may be larger than the diameter of the 2 nd opening 28B.

The 1 st opening 28A is an insertion port into which the protruding portion 46 of the insulating member 20 is inserted. On the other hand, the 2 nd opening 28B is a hole for preventing the protruding portion 46 from interfering with the terminal portion of the 1 st terminal portion 24 even when the length of the protruding portion 46 of the insulating member 20 to be inserted is set long. By forming the insertion hole 28 as a through hole in this way, the length of the protruding portion 46 of the insulating member 20 can be increased, and the strength of the 1 st terminal portion 24 can be further enhanced.

In the present embodiment, the entire protruding portion 46 of the insulating member 20 is housed in the insertion hole 28 of the 1 st terminal portion 24. Specifically, the distal end of the protruding portion 46 extends to the same position as the distal end (distal end portion) of the convex portion 52 of the 1 st terminal portion 24 in the insertion direction B (see fig. 8). By arranging the projecting portion 46 over substantially the entire length in the insertion direction B in the 1 st terminal portion 24 of the internal terminal 18 in this manner, the projecting portion 46 can be prevented from projecting from the insertion hole 28 and interfering with other members, and the strength of the 1 st terminal portion 24 can be enhanced to the maximum.

Next, the two-pronged portion 30 provided at the end of the 2 nd terminal portion 26 will be described.

In the present embodiment, the 2 nd terminal portion 26 is configured to have the bifurcated portion 30 so as to sandwich the central conductor portion 10 of the coaxial cable 4. By using such a bifurcated portion 30 to connect to the center conductor portion 10, the center conductor portion 10 can be connected by a simple structure. In addition, the bifurcated portion 30 is a portion extending in the axial direction a and has no irregularities in the vertical direction (insertion direction B), similarly to the central conductor portion 10. According to the structure of the present application, the contact area can be ensured to a greater extent than in the case where the bifurcated portion 30 is bifurcated in the vertical direction to be in contact with the central conductor portion 10, not in the axial direction a. Further, since the concave-convex portions in the vertical direction are not provided, the capacitive coupling with the external terminal 22 can be suppressed.

In the present embodiment, the 1 st extension portion 30A and the 2 nd extension portion 30B of the bifurcated portion 30 are made to have the same and constant width and the same and constant thickness.

Specifically, as shown in fig. 9B, the 1 st extension 30A and the 2 nd extension 30B each have the same width as the length D1 and are also constant in the axial direction a. Also, as shown in fig. 9C, the thickness of each of the 1 st extension 30A and the 2 nd extension 30B is the length D2 and is the same, and is also constant in the axial direction a.

Compared to the case where the 1 st extension part 30A and the 2 nd extension part 30B are different in width and thickness and are not constant, the configuration of the present application can suppress capacitive coupling between them and the external terminal 22, and can suppress deterioration of the electrical characteristics of the plug cable 2.

The present invention has been described above with reference to the above embodiments, but the present invention is not limited to the above embodiments. For example, in the embodiment, the case where the external terminal 22 has the cylindrical portion 32 and the 1 st terminal portion 24 of the internal terminal 18 disposed in the cylindrical portion 32 has the cylindrical portion 50 has been described, but the present invention is not limited to this case. The cross-sections of the cylindrical portion 32 and the cylindrical portion 50 are not limited to circular shapes, and may be any shape. That is, all of them may be cylindrical. In addition, the cylindrical shape can further suppress mutual capacitive coupling.

The term "cylindrical" as used herein includes not only a completely cylindrical shape but also a cylindrical shape having irregularities, notches, projections, and the like (substantially cylindrical shape, and the like).

In the embodiment, the case where the direction (insertion direction B) in which the 1 st terminal portion 24 of the inner terminal 18 and the cylindrical portion 32 of the outer terminal 22 extend is orthogonal to the axial direction a of the coaxial cable 4 has been described, but the present invention is not limited to this case and may not be orthogonal. That is, the 1 st terminal portion 24 and the cylindrical portion 32 may extend in a direction intersecting the axial direction a of the coaxial cable 4.

In the embodiment, the case where the insertion hole 28 provided in the 1 st terminal portion 24 is a through hole has been described, but the present invention is not limited to this case, and only the 1 st opening 28A on one side may be opened, and the 2 nd opening 28B on the other side may be closed. That is, at least the protruding portion 46 of the insulating member 20 may be inserted. In other words, the insertion hole 28 may be provided in the proximal end portion 51 opposite to the distal end portion located at the distal end in the insertion direction B. Further, by forming the insertion hole 28 as a through hole, the length of the protruding portion 46 to be inserted can be made longer, and the strength of the 1 st terminal portion 24 can be further ensured.

In the embodiment, the case where the protruding portion 46 of the insulating member 20 extends to the same position as the distal end portion (the convex portion 52) of the 1 st terminal portion 24 has been described, but the present invention is not limited to this case, and may be a case where the protruding portion further protrudes from the 1 st terminal portion 24 or is entirely accommodated in the 1 st terminal portion 24. Further, the projecting portion 46 is accommodated in the 1 st terminal portion 24 without projecting further from the 1 st terminal portion 24, and interference with other members can be prevented.

In the embodiment, the description has been given of the case where the bifurcated portion 30 is provided at the tip of the 2 nd terminal portion 26 and the bifurcated portion 30 is brought into contact with the central conductor portion 10 of the coaxial cable 4 in the axial direction a, but the present invention is not limited to this case, and the bifurcated portion 30 may be configured to be brought into contact with the central conductor portion 10 of the coaxial cable 4. Further, providing the bifurcated portion 30 that engages with the center conductor portion 10 in the axial direction a can ensure a contact area with the center conductor portion 10, and can obtain good electrical characteristics.

In the embodiment, the case where the 1 st extending portion 30A and the 2 nd extending portion 30B of the bifurcated member 30 have the same and constant width (D1) and the same and constant thickness (D2) has been described, but the present invention is not limited to this case, and they may be different and not constant. Further, it is possible to obtain good electrical characteristics by making the width and the thickness the same and constant.

In the embodiment, the case where the position where the 1 st claw portion 38 contacts the distal end portion 48 of the insulating member 20 is set to be closer to the holding portion 34 than the position where the 1 st claw portion 38 contacts the external conductor portion 14 is to the holding portion 34 has been described, but the present invention is not limited to this case and may be in an opposite relationship. Further, the contact between the 1 st claw 38 and the outer conductor portion 14 can be ensured with a simple configuration by setting the distance from the holding portion 34 to the portion where the 1 st claw 38 contacts the distal end portion 48 of the insulating member 20 to be shorter than the distance from the holding portion 34 to the portion where the 1 st claw 38 contacts the outer conductor portion 14, or setting the distance from the holding portion 34 to be the same as the distance from the holding portion 34 to the portion where the 1 st claw 38 contacts the outer conductor portion 14.

The present disclosure is fully described in connection with the preferred embodiments with reference to the accompanying drawings, but various variations and modifications will be apparent to those skilled in the art. Such variations and modifications are to be understood as being included within the scope of the present disclosure as long as they do not depart from the scope of the present disclosure based on the appended claims. Further, combinations of elements and changes in the order of the elements of the embodiments may be implemented without departing from the scope and spirit of the present disclosure.

In addition, any of the various embodiments and modifications described above can be combined as appropriate to achieve the respective effects.

Industrial applicability of the invention

The present invention can be applied to any L-shaped coaxial connector with a coaxial cable.

Description of the reference numerals

A plug cable (L-shaped coaxial connector with coaxial cable); a coaxial cable; an L-shaped coaxial connector; an object side connector; an internal terminal (center socket); a central conductor portion (core wire); an external terminal; an insulator; an insulating member (resin molded case); an outer conductor portion; an insulating coating (skin); an internal terminal (center pin); an insulating member (bushing); an external terminal (housing); 1 st terminal portion; 2 nd terminal portion; inserting the hole; a 1 st opening; 28b.. 2 nd opening; two-pronged portion; a cylindrical portion; a retaining portion; a fixing portion; riveting the snap-fit portion; 1 st jaw; a 2 nd jaw; a 3 rd jaw; a base portion; a protrusion; a tip portion; a cylindrical portion; a basal end portion; a boss (tip).