JP6915684B2 - L-type coaxial connector and L-type coaxial connector with coaxial cable - Google Patents

Description

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

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 (see, for example, Patent Document 1).

The L-shaped coaxial connector of Patent Document 1 is arranged between an internal terminal connected to the central conductor portion of the coaxial cable, an external terminal (housing) connected to the external conductor portion of the coaxial cable, and the internal terminal and the external terminal. It is provided with an insulating member (bushing) to be formed. When connecting the coaxial connector to the connector of the other party, the internal terminal and the external terminal of the coaxial connector are fitted to the respective terminals of the corresponding counterparty connector.

In the coaxial connector of Patent Document 1, the external terminal, which is a housing, is provided with an insulating member and a caulking engaging portion for fixing the internal terminal. The caulking engagement portion is composed of three pairs of claw portions that can be bent in the circumferential direction of the coaxial cable. A pair of claws come into contact with the outer conductor of the coaxial cable to conduct conduction. The other two pairs of claws only contact and hold the insulating portion and are not conductive to the coaxial cable.

Japanese Unexamined Patent Publication No. 2015-21017

In the coaxial connector of Patent Document 1, the external terminal which is a housing functions as a ground side electrode around the portion excluding the central conductor portion in the axial direction of the coaxial cable, but the claw portion which contacts the external conductor portion of the coaxial cable , There was a gap with the claw part that came into contact with the insulating part. This gap portion becomes an electrical break, which disturbs the electromagnetic field and may deteriorate the electrical characteristics.

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

In order to achieve the above object, the L-shaped coaxial connector with a coaxial cable of the present invention includes a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion, and the central conductor of the coaxial cable. L-shaped with coaxial cable including an internal terminal connected to the portion, an external terminal connected to the external conductor portion of the coaxial cable, and an insulating member arranged between the internal terminal and the external terminal. In the coaxial connector, the external terminal is a holding portion that extends along the coaxial cable and the insulating member to hold them, and a caulking section that is crimped from the holding portion toward the coaxial cable. The caulking engaging portion includes a joint portion, and the caulking engaging portion includes a first claw portion that engages with the insulating member around a portion where the central conductor portion and the internal terminal of the coaxial cable are connected, and the coaxial cable. It has a second claw portion that engages with the outer conductor portion of the coaxial cable, and the first claw portion extends to a position that engages with the outer conductor portion of the coaxial cable in the axial direction of the coaxial cable. Is formed as follows.

Further, the L-shaped coaxial connector of the present invention is an L-shaped coaxial connector to which a coaxial cable having a central conductor portion and an external conductor portion arranged around the central conductor portion is connected, and the central conductor of the coaxial cable. The external terminal includes an internal terminal connected to the portion, an external terminal connected to the external conductor portion of the coaxial cable, and an insulating member arranged between the internal terminal and the external terminal. Includes a holding portion that extends along the coaxial cable and the insulating member to hold them, and a caulking engaging portion that is crimped from the holding portion toward the coaxial cable. The joint portion engages with the first claw portion that engages with the insulating member around the portion where the central conductor portion of the coaxial cable and the internal terminal are connected, and the outer conductor portion of the coaxial cable. It has a second claw portion, and the first claw portion is formed so as to extend in the axial direction of the coaxial cable to a position where it engages with the outer conductor portion of the coaxial cable.

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

Perspective view of the plug cable of the embodiment Perspective view of the mating connector connected to the plug cable of the embodiment Top view of the plug cable of the embodiment Rear view of the plug cable of the embodiment An exploded perspective view of the plug cable of the embodiment A perspective view showing a state before completion of the plug cable of the embodiment. Top view of FIG. XX sectional view of FIG. Perspective view of internal terminals used in the plug cable of the embodiment Top view of the internal terminals used in the plug cable of the embodiment Longitudinal section of the internal terminal used in the plug cable of the embodiment

According to the first aspect of the present invention, a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion, an internal terminal connected to the central conductor portion of the coaxial cable, and the said. An L-shaped coaxial connector with a coaxial cable including an external terminal connected to the external conductor portion of the coaxial cable and an insulating member arranged between the internal terminal and the external terminal, wherein the external terminal is A tubular portion extending in a tubular shape in a direction intersecting the axial direction of the coaxial cable, and a holding portion extending from the tubular portion along the coaxial cable and the insulating member to hold them. A caulking engaging portion crimped from the holding portion toward the coaxial cable is provided, and the caulking engaging portion has the insulating property around a portion where the central conductor portion and the internal terminal of the coaxial cable are connected. It has a first claw portion that engages with a member and a second claw portion that engages with the outer conductor portion of the coaxial cable, and the first claw portion is in the axial direction of the coaxial cable. Provided is an L-shaped coaxial connector with a coaxial cable, which is formed so as to extend to a position where the coaxial cable engages with the outer conductor portion.

According to such a configuration, it is possible to prevent an electrical break in the axial direction of the coaxial cable as compared with the case where the first claw portion does not conduct with the outer conductor portion, and the deterioration of the electrical characteristics can be prevented. It can be suppressed.

According to the second aspect of the present invention, the portion where the first claw portion contacts the insulating member is closer to the holding portion than the portion where the first claw portion contacts the outer conductor portion. The L-shaped coaxial connector with a coaxial cable according to the first aspect, which is set to a distance, is provided. According to such a configuration, the first claw portion in contact with the insulating member can be extended in the axial direction of the coaxial cable to be brought into contact with the outer conductor portion, and the first claw portion is pressed against the outer conductor portion. Can be contacted with. Thereby, it is possible to surely secure the contact between the first claw portion and the outer conductor portion while using a simple structure.

According to the third aspect of the present invention, it is an L-shaped coaxial connector to which a coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion is connected, and the central conductor of the coaxial cable. The external terminal includes an internal terminal connected to the portion, an external terminal connected to the external conductor portion of the coaxial cable, and an insulating member arranged between the internal terminal and the external terminal. Includes a holding portion that extends along the coaxial cable and the insulating member to hold them, and a caulking engaging portion that is crimped from the holding portion toward the coaxial cable. The joint portion engages with the first claw portion that engages with the insulating member around the portion where the central conductor portion of the coaxial cable and the internal terminal are connected, and the outer conductor portion of the coaxial cable. It has a second claw portion, and the first claw portion is formed so as to extend in the axial direction of the coaxial cable to a position where it engages with the outer conductor portion of the coaxial cable. Provide a connector.

According to such a configuration, it is possible to prevent an electrical break in the axial direction of the coaxial cable as compared with the case where the first claw portion does not conduct with the outer conductor portion, and the deterioration of the electrical characteristics can be prevented. It can be suppressed.

According to the fourth aspect of the present invention, the portion where the first claw portion contacts the insulating member is closer to the holding portion than the portion where the first claw portion contacts the outer conductor portion. The L-shaped coaxial connector according to the third aspect, which is set to a distance, is provided. According to such a configuration, the first claw portion in contact with the insulating member can be extended in the axial direction of the coaxial cable to be brought into contact with the outer conductor portion, and the first claw portion is pressed against the outer conductor portion. Can be contacted with. Thereby, it is possible to surely secure the contact between the first claw portion and the outer conductor portion while using a simple structure.

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

(Embodiment)

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

The plug cable 2 shown in FIG. 1 includes a coaxial cable 4 and an L-shaped coaxial connector (first connector) 6 to which the coaxial cable 4 is connected. When using the plug cable 2, the L-shaped coaxial connector 6 is fitted into the mating connector (second connector) 8 shown in FIG.

In the present embodiment, the mating connector 8 shown in FIG. 2 is an insulating member (resin mold case) arranged between the internal terminal (center socket) 9, the external terminal 11, and the internal terminal 9 and the external terminal 11. 13 and.

While the L-shaped coaxial connector 6 shown in FIG. 1 is connected to the coaxial cable 4, the mating connector 8 shown in FIG. 2 has a substrate (not shown) mounted on the back surface of the external terminal 11. That is, the combination of the plug cable 2 and the mating connector 8 of the present embodiment is different from the so-called "board-to-board" that connects the "board" and the "board", and is a connection that connects the "coaxial cable" and the "board". It is a form.

The internal terminal 9 shown in FIG. 2 has a female shape that accepts a male-shaped terminal. As a result, the mating connector 8 becomes a plug receptacle for the plug cable 2 shown in FIG. The male shape has a contact surface on the outer peripheral portion, and the female shape has a contact surface on the inner peripheral portion.

Next, each component of the plug cable 2 will be described with reference to FIGS. 1, 3 and 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 each component shown in FIG. 5 is arranged in the plug cable 2 and before it is fixed, and FIG. 7 is a plan view of FIG. 8 is a cross-sectional view taken along the line XX of FIG.

As shown in FIG. 5, the coaxial cable 4 includes a central conductor portion (core wire) 10, an insulator 12, an outer conductor portion 14, and an insulating coating (skin) 16. In the axial direction A of the coaxial cable 4, the central conductor portion 10, the insulator 12, the outer conductor portion 14, and the insulating coating 16 are exposed in this order from the tip end side of the coaxial cable 4.

The internal terminal 18 of the L-shaped coaxial connector 6 described later is connected to the central conductor portion 10, and the external terminal 22 of the L-shaped coaxial connector 6 described later is connected to the external conductor portion 14.

The L-shaped coaxial connector 6 to which the coaxial cable 4 is connected includes an internal terminal (center pin) 18, an insulating member (bushing) 20, and an external terminal (housing) 22.

The internal terminal 18 is a terminal connected to the central conductor portion 10 of the coaxial cable 4 as described above. 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 in the present embodiment is made of one metal plate. Similarly, the external terminal 22 is also made of one metal plate. The internal terminal 18 and the external terminal 22 are made of a conductive member, and in the present embodiment, the surface of the copper alloy material is plated with nickel and gold.

The insulating member 20 is a member that is arranged 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, for example, 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 first terminal portion 24 and a second terminal portion 26.

The first terminal portion 24 is a terminal portion inserted into the internal terminal 9 of the other party connector 8 described above. The first terminal portion of the present embodiment is configured as a male type having a contact surface on the outer peripheral portion. By making the internal terminal 18 a male type (pin type), it is possible to reduce the size as compared with the case of making a female type (socket type) such as the internal terminal 9 of the mating connector 8.

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

In the present embodiment, the first terminal portion 24 is provided with an insertion hole 28. The insertion hole 28 is a hole for inserting the protruding portion 46 of the insulating member 20, which will be described later. By inserting the protruding portion 46 into the insertion hole 28, it is possible to suppress a decrease in strength due to the miniaturization of the first terminal portion 24 and to reinforce the strength of the first terminal portion 24. A more detailed shape of the first terminal portion 24 will be described later.

The second terminal portion 26 is a plate-shaped terminal portion extending laterally from the first terminal portion 24. The second terminal portion 26 is connected to the central conductor portion 10 of the coaxial cable 4 in the assembled state shown in FIGS. 6 and 7. The second terminal portion 26 in the present embodiment is a flat plate-shaped member perpendicular to the insertion direction B.

A bifurcated portion 30 is provided at the tip of the second terminal portion 26. 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 in the assembled state shown in FIGS. 6 and 7. The width direction C is a direction perpendicular to both the axial direction A and the insertion direction B. The bifurcated portion 30 and the central conductor portion 10 are fixed to each other by soldering.

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

The base portion 44 is a member that serves as a base for the insulating member 20. The base portion 44 is housed in an external terminal 22 which is a housing. A protruding portion 46 and a tip portion 48 are formed on the base portion 44.

The protruding portion 46 is a member that protrudes from the base portion 44 in the insertion direction B. As described above, the protruding portion 46 has a function of reinforcing the strength of the first terminal portion 24 by inserting it into the insertion hole 28 of the first terminal portion 24 of the internal terminal 18.

The tip portion 48 is a member provided at the tip of the base portion 44 in the axial direction A. In the present embodiment, the tip portion 48 is provided as a pair of members provided at intervals in the width direction C.

The tip portion 48 has a function of contacting the insulator 12 of the coaxial cable 4 to hold and fix the coaxial cable 4 in the assembled state shown in FIGS. 6 and 7. As described above, the tip portion 48 has a function of holding the connection portion between the coaxial cable 4 and the internal terminal 18, that is, the connection portion between the central conductor portion 10 of the coaxial cable 4 and the bifurcated portion 30 of the internal terminal 18.

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

The tubular portion 32 is a tubular member that fits into the external terminal 11 of the mating connector 8 described above. The tubular portion 32 in the present embodiment has a cylindrical (generally cylindrical) shape extending in the insertion direction B. In the assembled state shown in FIGS. 6 and 7, the first terminal portion 24 of the internal terminal 18 is arranged inside the tubular portion 32.

By making the tubular portion 32 of the external terminal 22 cylindrical and the first terminal portion 24 of the internal terminal 18 also cylindrical, a constant distance from each other is maintained in the radial direction perpendicular to the insertion direction B, and the internal terminal 18 is locally narrowed. It doesn't become. As a result, it is possible to prevent a decrease in the characteristic impedance due to an increase in the capacitance of the tubular portion 32 and the first terminal portion 24, and as a result, prevent deterioration of the reflection characteristics.

The holding portion 34 is a plate-shaped member extending laterally from the tubular portion 32. The holding portion 34 is arranged along the insulating member 20 and the coaxial cable 4 in the assembled state shown in FIGS. 6 and 7, and holds the insulating member 20 and the coaxial cable 4. The holding portion 34 is formed with a tubular portion 32, a fixing portion 35, and a caulking engaging portion 36 (see FIG. 1).

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

The caulking engaging portion 36 is a member that is crimped toward the coaxial cable 4 and the insulating member 20. By caulking the caulking engaging portion 36, the coaxial cable 4 and the insulating member 20 are integrally fixed.

The caulking engaging portion 36 in the present embodiment is composed of a plurality of claws that are bent from the holding portion 34 toward the coaxial cable 4 in the circumferential direction D of the coaxial cable 4. Specifically, a first claw portion 38, a second claw portion 40, and a third claw portion 42 are provided. As shown in FIG. 5 and the like, each of the first claw portion 38, the second claw portion 40, and the third claw portion 42 is composed of a pair of plate-shaped members provided at intervals in the width direction C. Has been done.

Each function of the claw portion will be described with reference to FIGS. 6 and 7.

As shown in FIGS. 6 and 7, the first claw portion 38 is crimped so as to come into contact with the tip portion 48 of the insulating member 20 located around the insulator 12 of the coaxial cable 4. The first claw portion 38 in contact with the tip portion 48 has a function of holding and fixing the connection portion between the central conductor portion 10 of the coaxial cable 4 and the bifurcated portion 30 of the internal terminal 18.

The second claw portion 40 is crimped so as to come into contact with the outer conductor portion 14. The second claw portion 40 that comes into contact with the outer conductor portion 14 has a function of electrically connecting the external terminal 22 to the coaxial cable 4.

The third claw portion 42 is crimped so as to come into contact with the insulating coating 16 of the coaxial cable 4. The third claw portion 42 in contact with the insulating coating 16 has a function of holding and fixing the coaxial cable 4.

By crimping the first claw portion 38, the second claw portion 40, and the third claw portion 42, the plug cable 2 shown in FIG. 1 is manufactured. In the plug cable 2 shown in FIG. 1, the internal terminal 18 is connected to the central conductor portion 10 of the coaxial cable 4, and the external terminal 22 is held and fixed in a state of being connected to the external conductor portion 14 of the coaxial cable 4. There is. 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 and the substrate on which the mating connector 8 is mounted are connected. It can be electrically connected to transmit high frequency signals.

In such a configuration, as shown by the dotted line E in FIGS. 7 and 8, the first 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 dotted line E represents the position of the tip of the first claw portion 38 in the axial direction A. By bringing the first claw portion 38 into contact with the outer conductor portion 14, not only the second claw portion 40 but also the first claw portion 38 conducts to the outer conductor portion 14. In this way, the first claw portion 38 has a function of contacting the tip portion 48 to hold and fix the connecting portion between the central conductor portion 10 and the bifurcated portion 30 of the internal terminal 18, and the external conductor portion 14 and the external conductor portion 14. It also has another function of conducting.

With respect to the above configuration, it is conceivable that only the second claw portion 40 of the caulking engaging portion 36 contacts the outer conductor portion 14, and the first claw portion 38 does not contact the outer conductor portion 14. In the case of such a configuration, in the completed plug cable 2 shown in FIG. 1, between the second claw portion 40 that conducts to the outer conductor portion 14 and the first claw portion 38 that does not conduct to the outer conductor portion 14. May cause an electrical break and disturb the electromagnetic field. As a result, the electrical characteristics of the plug cable 2 may deteriorate.

In the plug cable 2 of the present embodiment, not only the second claw portion 40 but also the first claw portion 38 is in contact with the outer conductor portion 14 and conducts. Therefore, it is possible to prevent an electrical break in the axial direction A from occurring at the external terminal 22. As shown in FIG. 1, there is a gap between the first claw portion 38 and the second claw portion 40, but since the outer conductor portion 14 is arranged between them, the electrical break is formed. Does not occur. With such a configuration, the electrical characteristics of the plug cable 2 can be improved, and a high frequency signal can be stably transmitted.

Further, in the present embodiment, as shown in FIG. 8, the portion where the first claw portion 38 contacts the tip portion 48 of the insulating member 20 is the portion where the first claw portion 38 contacts the external conductor portion 14. The distance is set closer to the holding portion 34 of the external terminal 22. Specifically, the height position H1 of the tip 48 of the insulating member 20 is lower than the height position H2 of the outer conductor 14. As a result, the distance L1 from the portion where the first claw portion 38 contacts the tip portion 48 of the insulating member 20 to the holding portion 34 is set, and the distance L1 from the portion where the first claw portion 38 contacts the external conductor portion 14 is the holding portion. The distance to 34 is shorter than L2. According to such an arrangement, if the first claw portion 38 in contact with the tip portion 48 is extended in the axial direction A and brought into contact with the outer conductor portion 14, the first claw portion 38 can be brought into contact with the outer conductor portion 14. Can be contacted by pressing against. As a result, the contact between the first claw portion 38 and the outer conductor portion 14 can be reliably ensured while using a simple configuration.

In the plug cable 2 having the above-described configuration, as shown in FIG. 8, the protruding portion 46 of the insulating member 20 is inserted into the first terminal portion 24 of the internal terminal 18. As a result, the internal terminal 18 is reinforced from the inside, and the strength of the internal terminal 18 is improved.

In the present embodiment, as described above, the internal terminal 18 is provided with the first terminal portion 24, and is a male type to be inserted into the internal terminal 9 of the mating connector 8. As a result, it is not necessary to secure the springiness unlike the female type, and the internal terminal 18 can be made smaller. Even if the internal terminal 18 is made smaller, the strength of the internal terminal 18 is reinforced because the protruding portion 46 of the insulating member 20 is inserted and engaged with the insertion hole 28 of the first terminal portion 24. As a result, it is possible to suppress a decrease in strength due to the miniaturization of the internal terminal 18. By reducing the overall shape of the internal terminal 18 in this way, capacitive coupling with the external terminal 22 arranged around the internal terminal 18 is suppressed, and deterioration of electrical characteristics is suppressed, and at the same time, at the same time. The size of the plug cable 2 can be reduced, particularly the height can be reduced.

Next, the detailed configuration of the internal terminal 18 will be described with reference to FIGS. 9A-9C. 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 vertical sectional view of the internal terminal 18 (corresponding to the XX cross section of FIG. 7). ..

As shown in FIGS. 9A and 9C, the first terminal portion 24 of the present embodiment is formed in the shape of a rounded cylinder having a rounded tip. Specifically, the first terminal portion 24 includes a cylindrical portion 50 and a convex portion 52.

The cylindrical portion 50 is a cylindrical member, one side of which is connected to the second terminal portion 26 and the other side of which is connected to the convex portion 52. The convex portion 52 is a member that protrudes from the cylindrical portion 50 in the insertion direction B. The convex portion 52 constitutes the tip end portion of the first terminal portion 24 in the insertion direction B.

The convex portion 52 in the present embodiment forms a curved surface 52a. The surface 52a is a surface that continuously continues from the outer peripheral surface of the cylindrical portion 50, and is smoothly curved toward the center side of the first terminal portion 24. By forming such a surface 52a, the tip portion of the first terminal portion 24 has a rounded shape instead of a square shape. By forming not only the cylindrical portion 50 but also the convex portion 52 into a rounded shape in this way, it is possible to suppress capacitive coupling with the external terminals 22 provided around the plug, as compared with the case where the convex portion 52 has a rounded shape. Deterioration of the electrical characteristics of the cable 2 can be suppressed.

Further, 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 using the insertion hole 28 as a through hole, two openings 28A and 28B are formed at both ends of the first terminal portion 24 in the insertion direction B (FIG. 9C). A first opening 28A is formed in the cylindrical portion 50, and a second opening 28B is formed in the convex portion 52. The first opening 28A is formed at the base end portion 51 of the first terminal portion 24, and the second opening portion 28B is formed at the tip end portion (convex portion 52) of the first terminal portion 24.

In FIG. 9C, the first opening 28A and the second opening 28B are shown to have the same diameter, but FIG. 9C is a schematic view and does not necessarily have the same diameter. For example, as shown in FIG. 8, the diameter of the first opening 28A may be larger than the diameter of the second opening 28B.

The first opening 28A is an insertion port for inserting the protruding portion 46 of the insulating member 20 described above. On the other hand, the second opening 28B prevents the protruding portion 46 from interfering with the tip portion of the first terminal portion 24 even when the length of the protruding portion 46 of the insulating member 20 to be inserted is set to be long. It is a hole for. 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 first terminal portion 24 can be further reinforced.

Further, in the present embodiment, the entire protruding portion 46 of the insulating member 20 is accommodated in the insertion hole 28 of the first terminal portion 24. Specifically, the tip of the protruding portion 46 extends to the same position as the tip (tip portion) of the convex portion 52 of the first terminal portion 24 in the insertion direction B (see FIG. 8). In this way, by arranging the protruding portion 46 in the first terminal portion 24 of the internal terminal 18 over the substantially overall length of the insertion direction B, the protruding portion 46 is prevented from protruding from the insertion hole 28 and interferes with other members. It is possible to reinforce the strength of the first terminal portion 24 to the maximum while preventing the above.

Next, the bifurcated portion 30 provided at the tip of the second terminal portion 26 will be described.

In the present embodiment, the bifurcated portion 30 is formed in the second terminal portion 26 so as to sandwich the central conductor portion 10 of the coaxial cable 4 described above. By connecting to the central conductor portion 10 using such a bifurcated portion 30, it is possible to connect to the central conductor portion 10 with a simple configuration. Further, the bifurcated portion 30 is a portion extending in the axial direction A like the central conductor portion 10, and does not have unevenness in the vertical direction (insertion direction B). According to such a configuration, a large contact area can be secured as compared with the case where the bifurcated portion 30 is bifurcated in the vertical direction instead of the axial direction A and comes into contact with the central conductor portion 10. Further, by not having unevenness in the vertical direction, capacitive coupling with the external terminal 22 can be suppressed.

Further, in the present embodiment, the width of each of the first extending portion 30A and the second extending portion 30B of the bifurcated portion 30 is the same and constant, and the thickness of each is also the same and constant.

Specifically, as shown in FIG. 9B, the widths of the first extending portion 30A and the second extending portion 30B are the same in the length D1 and are also constant in the axial direction A. .. Similarly, as shown in FIG. 9C, the thicknesses of the first extending portion 30A and the second extending portion 30B are the same in the length D2 and are also constant in the axial direction A.

According to such a configuration, the capacitive coupling with the external terminal 22 can be suppressed as compared with the case where the width and thickness of the first extending portion 30A and the second extending portion 30B are different or not constant. Therefore, deterioration of the electrical characteristics of the plug cable 2 can be suppressed.

Although the present invention has been described above with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments. For example, in the embodiment, the external terminal 22 has a cylindrical tubular portion 32, and the first terminal portion 24 of the internal terminal 18 arranged in the cylindrical portion 32 has a cylindrical portion 50. However, it is not limited to such a case. The cross section of the tubular portion 32 and the cylindrical portion 50 is not limited to a circular shape and may have any shape. That is, all of them may be tubular. It should be noted that the cylindrical shape can suppress the electrical capacitive coupling with each other.

The term "cylindrical" as used herein includes not only a perfect cylindrical shape but also a cylindrical shape with irregularities, notches, protrusions, etc. (generally cylindrical, substantially cylindrical, roughly cylindrical, etc.). ).

Further, in the embodiment, the case where the direction in which the first terminal portion 24 of the internal terminal 18 and the tubular portion 32 of the external terminal 22 extend (insertion direction B) is orthogonal to the axial direction A of the coaxial cable 4 has been described. Not limited to such a case, the case may not be orthogonal. That is, the first terminal portion 24 and the tubular portion 32 may extend in a direction intersecting the axial direction A of the coaxial cable 4.

Further, in the embodiment, the case where the insertion hole 28 provided in the first terminal portion 24 is a through hole has been described, but not limited to such a case, only the first opening 28A on one side is open. The second 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. Further, in other words, the insertion hole 28 may be provided at the base end portion 51 opposite to the tip end portion located at the tip end in the insertion direction B. If the insertion hole 28 is a through hole, the length of the protruding portion 46 to be inserted can be made longer, and the strength of the first terminal portion 24 can be further secured.

Further, in the embodiment, the case where the protruding portion 46 of the insulating member 20 extends to the same position as the tip portion (convex portion 52) of the first terminal portion 24 has been described, but the case is not limited to such a case, and the first terminal is not limited to this case. It may be a case where it further protrudes from the portion 24 or is completely housed in the first terminal portion 24. It is possible to prevent interference with other members by accommodating the protruding portion 46 in the first terminal portion 24 without further projecting from the first terminal portion 24.

Further, in the embodiment, the case where the bifurcated portion 30 is provided at the tip of the second terminal portion 26 and is brought into contact with the central conductor portion 10 of the coaxial cable 4 in the axial direction A has been described. It may be brought into contact with a structure different from that of the portion 30. If the bifurcated portion 30 that engages with the central conductor portion 10 in the axial direction A is provided, the contact area with the central conductor portion 10 can be secured, and good electrical characteristics can be obtained.

Further, in the embodiment, the width of the first extending portion 30A and the width of the second extending portion 30B in the bifurcated portion 30 are the same and constant (D1), and the thickness of each is also the same and constant (D2). ) The case has been described, but it is not limited to such a case, and it does not have to be the same and constant. Good electrical characteristics can be obtained when the width is the same and constant, and the thickness is also the same and constant.

Further, in the embodiment, the portion where the first claw portion 38 contacts the tip portion 48 of the insulating member 20 is closer to the holding portion 34 than the portion where the first claw portion 38 contacts the external conductor portion 14. Although the case where the distance is set has been described, the relationship is not limited to such a case and the reverse relationship may be used. The location where the first claw portion 38 contacts the tip portion 48 of the insulating member 20 is closer to or the same distance from the holding portion 34 than the portion where the first claw portion 38 contacts the external conductor portion 14. If it is set, the contact between the first claw portion 38 and the outer conductor portion 14 can be ensured by a simple configuration.

Although the present disclosure has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various modifications and modifications are obvious to those skilled in the art. It should be understood that such modifications and amendments are included therein, as long as they do not deviate from the scope of the present disclosure by the appended claims. In addition, changes in the combination and order of elements in each embodiment can be realized without departing from the scope and ideas of the present disclosure.

In addition, by appropriately combining any of the various embodiments and modifications of the embodiments or modifications, the effects of the respective embodiments can be achieved.

The present invention is applicable as long as it is an L-type coaxial connector with a coaxial cable.

2 plug cable (L-type coaxial connector with coaxial cable)
4 Coaxial cable 6 L-type coaxial connector 8 Mating connector 9 Internal terminal (center socket)
10 Center conductor (core wire)
11 External terminal 12 Insulator 13 Insulator (resin mold case)
14 External conductor part 16 Insulation coating (outer skin)
18 Internal terminal (center pin)
20 Insulating member (bushing)
22 External terminal (housing)
24 1st terminal part 26 2nd terminal part 28 Insertion hole 28A 1st opening 28B 2nd opening 30 Bifurcated part 32 Cylindrical part 34 Holding part 35 Fixing part 36 Caulking engaging part 38 1st claw part 40 2nd claw 42 3rd claw 44 Base 46 Protruding 48 Tip 50 Cylindrical 51 Base 52 Convex (tip)

Claims (4)

A coaxial cable having a central conductor portion and an outer conductor portion arranged around the central conductor portion,
An internal terminal connected to the central conductor portion of the coaxial cable,
An external terminal connected to the external conductor portion of the coaxial cable,
An L-shaped coaxial connector with a coaxial cable including an insulating member arranged 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 to hold them, and a caulking engaging portion that is crimped from the holding portion toward the coaxial cable.
The caulking engaging portion includes a first claw portion that engages with the insulating member around a portion where the central conductor portion of the coaxial cable and the internal terminal are connected, and the outer conductor portion of the coaxial cable. Has a second claw that engages in part
The outer conductor portion of the coaxial cable has a first portion that engages with the second claw portion and a second portion that extends from the first portion toward the first claw portion. ,
The tip of the first claw portion is formed so as to extend in the axial direction of the coaxial cable to a position where it engages with the second portion of the outer conductor portion of the coaxial cable.
The distance from the portion where the first claw portion contacts the insulating member to the holding portion is shorter than the distance from the portion where the first claw portion contacts the external conductor portion to the holding portion. L-shaped coaxial connector with coaxial cable. The L-shaped coaxial connector with a coaxial cable according to claim 1, wherein the tip of the first claw portion is arranged at a position spaced apart from the second claw portion in the axial direction. An L-shaped coaxial connector to which a coaxial cable having a central conductor portion and an external conductor portion arranged around the central conductor portion is connected.
An internal terminal connected to the central conductor portion of the coaxial cable,
An external terminal connected to the external conductor portion of the coaxial cable,
An insulating member arranged between the internal terminal and the external terminal is provided.
The external terminal includes a holding portion that extends along the coaxial cable and the insulating member to hold them, and a caulking engaging portion that is crimped from the holding portion toward the coaxial cable.
The caulking engaging portion includes a first claw portion that engages with the insulating member around a portion where the central conductor portion of the coaxial cable and the internal terminal are connected, and the outer conductor portion of the coaxial cable. Has a second claw that engages in part
The outer conductor portion of the coaxial cable has a first portion that engages with the second claw portion and a second portion that extends from the first portion toward the first claw portion. ,
The tip of the first claw portion is formed so as to extend in the axial direction of the coaxial cable to a position where it engages with the second portion of the outer conductor portion of the coaxial cable.
The distance from the portion where the first claw portion contacts the insulating member to the holding portion is shorter than the distance from the portion where the first claw portion contacts the external conductor portion to the holding portion. L-shaped coaxial connector. The L-shaped coaxial connector according to claim 3 , wherein the tip of the first claw portion is arranged at a position spaced apart from the second claw portion in the axial direction.

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