TW201633619A - Coaxial cable connector having excellent insulation performance - Google Patents

Abstract

The present invention is to provide a coaxial cable connector which allows for low profile of a connector while insulating a terminal and an external conductor shell reliably with a simpler structure. The coaxial cable connector includes a terminal; a housing formed integrally with the terminal; and an external conductor shell covering at least a part of the housing. On the surface of the housing facing the external conductor shell, a through hole for exposing at least a part of the terminal is provided, and a protrusion protruding toward the external conductor shell and separating the exposed part from the external conductor shell is provided. A recess capable of receiving the protrusion is provided oppositely to the housing of the external conductor shell.

Description

High-conductivity coaxial cable connector

The present invention relates to coaxial cable connectors, and more particularly to coaxial cable connectors having improved insulation properties.

An example of a prior coaxial cable connector is disclosed in Patent Document 1. A schematic cross-sectional view of the coaxial cable connector disclosed in Patent Document 1 is shown in Figs. 11 and 12 . Such a coaxial cable connector is used, for example, in an information machine such as a mobile phone, a smart phone, a personal digital assistant (PDA), a notebook computer, or an electronic device such as a home appliance.

The outer casing of the connector is formed by a cylindrical outer conductor casing 101. The outer conductor casing 101 is formed by press-forming a metal plate material, and is formed of a weir portion 106 having a longitudinal axis 105 as a central axis and a retaining portion 107 integrally extending from the weir portion 106. The terminal 103 is disposed inside the tubular portion formed by the outer conductor casing 101, and is held in a state of being electrically coupled to the core wire 115 of the coaxial cable 104.

The holding portion 107, as seen in Fig. 11, is erected from the crotch portion 6 parallel to the longitudinal axis 105 before assembly, but when assembled, as shown in Fig. 12. Shown, it is meandered along a direction perpendicular to the transverse axis 108 of the longitudinal axis 105. When the holding portion 107 is bent in a direction perpendicular to the lateral axis 108 of the longitudinal axis 105, the outer conductor casing 101 is electrically connected to the outer conductor 112 of the coaxial cable 104. Further, at this time, one portion 102C of the outer cover 10 is transmitted through the protrusion 107a provided on the inner wall of the outer conductor casing 101, and is bent in the direction of the longitudinal axis 108 in accordance with the bending of the holding portion 107. As a result, A portion 102C of the outer cover 10 that has been bent is disposed between the terminal 103 and the outer conductor casing 101 to prevent electrical connection therebetween.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 2504704

According to the connector structure of Patent Document 1, even if one portion of the terminal 103 is exposed from the outer cover 102, it can be prevented by a portion 102C of the outer cover disposed between the terminal 103 and the outer conductor outer casing 101. The exposed portion of the terminal 103 is in contact with the outer conductor housing.

However, in the prior connector construction, the terminal 103 and the outer cover 102 are designed as individual members, and a portion 102C of the outer cover 102 is bent at the time of assembly to insulate the terminal 103 from the outer conductor outer casing 101, etc., and the structure is very complex. Also, in this configuration, by being sandwiched between the terminals 103 and A portion 102C of the outer cover 102 between the outer conductor outer casings 101 also has the problem of hindering the shortness of the connector.

The present invention has been developed in order to solve the problems of these prior connector configurations, and an object of the present invention is to provide a coaxial cable connector which can be surely insulated from the outer conductor casing 101 in a relatively simple configuration and can be connected at the same time. The shortness of the device.

(1) A coaxial cable connector according to the present invention, comprising: a terminal; and a cover integrally formed with the front terminal; and an outer conductor cover covering at least a portion of the front cover; The opposing surface of the outer conductor casing is provided with a through hole for exposing at least a part of the front terminal, and a ridge portion which is raised toward the front outer conductor casing to open the front exposed portion from the front outer conductor casing; The front surface of the outer conductor casing facing the front cover is provided with a recessed portion for accommodating the front ridge portion.

According to this configuration, for example, the exposed portion of the terminal which is formed when the terminal and the cover are integrally formed can be pulled away from the outer conductor casing by using the raised portion of the outer cover, thereby increasing the distance between the exposed portion and the outer conductor casing. Insulation distance. Thereby, it is possible to reliably insulate the terminal from the outer conductor casing with a relatively simple construction, and at the same time, achieve a low profile of the connector. Even by embedding the ridges in the recesses, the positioning of the outer casing to the outer conductor casing can be easily performed.

(2) The coaxial cable connector described in (1) above, wherein It can be noted that the outer conductor outer casing is formed by processing the plate metal; the front recessed portion of the outer conductor outer casing is formed by beating the front plate metal.

Since the depressed portion can be formed only by the tapping of the plate-like metal, the manufacturing cost can be controlled to be inexpensive. Further, by providing the depressed portion, the strength of the outer conductor casing can be improved.

(3) The coaxial cable connector according to (1) or (2) above, wherein the exposed portion of the front terminal is located on a side opposite to the contact portion of the front terminal in the thickness direction of the front terminal; .

In order to surely suppress the sway of the terminal caused by the flow of the resin generated during the integral molding, it is necessary to press a part of the terminal with the mold, but at this time, together with the elastic displacement portion of the bottom side which must be exposed originally, The upper side of the elastic displacement portion is pressed by the mold and is effective. However, since the portion pressed by the mold becomes an exposed portion, the exposed portion of the terminal includes the person positioned on the side opposite to the contact portion of the terminal in the thickness direction of the terminal.

(4) The coaxial cable connector according to any one of (1) to (3), wherein the outer conductor outer casing is formed of a single sheet metal and has a circle with the target connector. A slightly cylindrical portion to which the can outer casing is attached; a front cover outer casing is attached to the front outer conductor casing by sandwiching at least a portion of the front cover between the front cylindrical portion and the opposing outer conductor casing.

According to this configuration, a part of the outer conductor casing, that is, a slightly cylindrical portion, can be used, and the outer casing can be simply attached to the outer conductor casing.

(5) The coaxial cable connector according to (4) above, wherein the front cylindrical portion is preferably not overlapped with the coaxial cable in the cylindrical direction of the front cylindrical portion.

Since the slightly cylindrical portion does not have a portion overlapping with the coaxial cable, the size of the outer conductor casing and the outer casing in the opposite direction does not become large, so that the connector can be made short.

(6) The coaxial cable connector (1) according to any one of (1) to (5), wherein the front coaxial cable connector may be a right angle connector.

According to the present invention, it is possible to provide a coaxial cable connector which can be surely insulated from the outer conductor casing by a relatively simple construction, and at the same time, the connector can be made short.

1‧‧‧Coaxial cable connector

10‧‧‧Coaxial cable

11‧‧‧Insulation coating

12‧‧‧External conductor

13‧‧‧Insulator

14‧‧‧core

20‧‧‧ terminals

24‧‧‧Connecting Department

27‧‧‧Exposed Department

40‧‧‧ Cover

41‧‧‧Setting surface

42‧‧‧Cylinder

46‧‧‧ Body Department

48‧‧‧through holes

49‧‧‧Uplift

50‧‧‧Crimping piece

70‧‧‧External conductor housing

72‧‧‧Slightly cylindrical

73‧‧‧ discontinuous part

80A, 80B‧‧‧ front side caulking

83‧‧‧Intermediate caulking

84‧‧‧Back side caulking

85‧‧‧Configuration surface

[Fig. 1] A bottom side plan view of a coaxial cable connector of the present invention in which a coaxial cable is wired.

Fig. 2 is an exploded perspective view showing the coaxial cable connector of the present invention.

[Fig. 3] A bottom side oblique view of the outer cover.

4] An upper side oblique view of the outer cover, and a bottom side oblique view of the outer conductor outer casing.

Fig. 5 is a cross-sectional view taken along line A-A of Fig. 1;

Fig. 6 is a view showing a modification of the outer cover.

[Fig. 7] An explanatory view of an assembly work of a coaxial cable connector.

Fig. 8 is an explanatory view of an assembly work of a coaxial cable connector.

[Fig. 9] An explanatory view of an assembly work of a coaxial cable connector.

[Fig. 10] An explanatory view of an assembly work of a coaxial cable connector.

Fig. 11 is a schematic cross-sectional view showing the structure of a connector of a prior coaxial cable connector.

Fig. 12 is a schematic cross-sectional view showing the structure of a connector of a prior coaxial cable connector.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings. Further, although a so-called right angle connector is described here, the present invention is of course not limited thereto.

1 is a bottom plan view showing the coaxial cable connector 1 of the present invention to which the coaxial cable 10 is wired, and FIG. 2 is an exploded perspective view showing the coaxial cable connector 1. The coaxial cable connector 1 has a bilaterally symmetrical shape sandwiching the central axis, and mainly includes a conductive terminal 20, an insulating outer cover 40 integrally formed with the terminal 20, at least a portion of the cover outer cover 40, and at least a portion of the coaxial cable 10. A portion of the outer conductor housing 70. Further, since the terminal 20 and the outer cover 40 are integrally formed, they cannot be actually disassembled. However, in Fig. 2, for the sake of convenience, the state in which they are disassembled is illustrated. When the coaxial cable connector 1 is assembled, the terminal 20, the cover 40, or the coaxial cable 10 are shown along the arrow "β" in the figure. The outer conductor case 70 is disposed in this order from the bottom side to the upper side of the coaxial cable connector 1, and is fixed to the outer conductor case 70.

The coaxial cable 10 has the same structure as the conventional coaxial cable, that is, from the outermost casing to the center, has an insulating coating 11, an outer conductor 12, an insulator 13, and a core wire 14. This structure is well known and therefore will not be described in detail.

The terminal 20 has a predetermined length along the axial direction α of the coaxial cable 10. A step portion 25 is provided in the vicinity of the middle of the main body portion 26. By the step portion 25, in the integrally formed outer cover 40, the rear end side (24) of the terminal 20 can be made closer to the coaxial side than the front end side (22). The cable 10, on the other hand, has a front end side (22) of the terminal 20 that is closer to the face 78 of the outer conductor housing 70 than the rear end side (24). At the rear end side (24) of the terminal 20, a connecting portion 24 is provided in contact with the core wire 14 of the coaxial cable 10, and at the connecting portion 24, when the coaxial cable connector 1 is assembled, the coaxial cable 10 is disposed. Core wire 14. Further, a contact portion 22 that is in contact with a center terminal (not shown) of the target connector is provided on the front end side (22) of the terminal 20. The contact portion 22 is provided in a state of standing toward the contact side with the target connector, and is a method in which the center terminal of the target connector is clamped to the elastic displacement portion 22' formed by the center. And was formed. Needless to say, it is not necessary to form the elastic contact portion 22', and for example, it may be formed by simply inserting a hole.

3 is a bottom side perspective view of the outer cover 40 integrally formed with the terminal 20, and FIG. 4 is a front side oblique view thereof. Fig. 4 is also a perspective view showing the bottom side of the outer conductor casing 70, which is changed to an angle different from that of Fig. 2. also, Figure 5 is a cross-sectional view taken along line A-A of Figure 1.

The outer cover 40 mainly includes a main body portion 46, a cylindrical portion 42 provided on the tip end side of the main body portion 46, and a cable fixing portion (41, 50, etc.) provided on the rear end side of the main body portion 46.

These parts are integrally formed with the terminal 20 by resin molding. However, a part of the terminal 20 remains exposed to the outside after the integral molding. The exposed portion of the terminal 20 of course includes the connecting portion 24, and further includes a portion of the elastic displacement portion 22' of the contact portion 22 of the bottom portion of the contact portion 22 and a peripheral portion thereof, or a portion of the upper surface side of the contact portion 22, that is, A portion of the opposite side (the upper surface side) of the contact portion 22 of the terminal 20 in the thickness direction of the terminal 20 and the opposite side of the outer conductor casing 70. Further, a part of the upper side of the contact portion 22 is also exposed, which is caused by a problem unique to the integral molding. That is, in order to suppress the sway of the terminal 20 against the flow of the resin at the time of integral molding, it is necessary to press a part of the terminal 20 by the mold, but at this time, the elastic displacement portion 22' of the bottom side which is originally required to be exposed is required. It is effective to press with the mold on the upper side of the elastic displacement portion 22'. However, the portion pressed by the mold will remain as the exposed portion 27 due to the through hole 48 of the resin. Therefore, the exposed portion 27 of the terminal 20 may include the contact with the terminal 20 in the thickness direction of the terminal. The person positioned on the opposite side of the portion 22.

The body portion 46 has a substantially cubic shape as a whole, but has a protruding portion 47 that protrudes toward the approaching side of the object connector. The protruding portion 47 can be used as a portion that complements the discontinuous portion 73 of the slightly cylindrical portion 72 of the outer conductor casing 70.

The cylindrical portion 42 on the tip end side of the main body protrudes from the upper surface portion 45 toward the contact side with the target connector, and the contact portion 22 of the terminal 20 is disposed at the center thereof. When the target connector is fitted, the cylindrical portion 42 is inserted into the cylindrical casing of the target connector, and at the same time, the contact portion 22 disposed at the center of the cylindrical portion 42 is disposed in the circle. The center terminal (not shown) at the center of the cartridge case is inserted and brought into contact. The three projections 44 extending from the upper surface portion 45 of the cylindrical portion 42 toward the tip end side and the left and right sides are required to position the outer cover 40 to the outer conductor case 70.

A cable fixing portion (41, 50, etc.) on the rear end side of the main body portion is provided with an installation surface 41 on which the core wire 14 of the coaxial cable 10 is placed. After the terminal 20 and the outer cover 40 are integrally molded, the connection portion 24 of the terminal 20 is exposed from the installation surface 41. Further, the installation surface 41 is slightly flat, but may be designed in a state in which the connection portion 24 is protruded or recessed from the installation surface 41. Thereby, the contact between the terminal 20 and the core wire 14 becomes true. In the illustrated example, the recess 43 is designed.

In order to fix the core wire 14, a pair of crimping pieces 50A, 50B are provided in the cable fixing portions (41, 50, etc.). The pair of crimping pieces 50A and 50B are supported by only one side 53 on each side opposed to each other with the installation surface 41 interposed therebetween, and are supported toward the core wire 14 around the respective support portions 53A and 53B. Set the setting surface 41 and bend it.

The outer conductor case 70 is formed by punching and zigzag a piece of sheet metal. The outer conductor casing 70 mainly includes an arrangement surface 85 on which the outer cover 40 or the coaxial cable 10 is disposed, a slightly cylindrical portion 72 provided on the tip end side of the arrangement surface 85, and a plurality of caulking portions. 80, 83, 84. The slightly cylindrical portion 72 is a portion that is connected to a cylindrical casing (not shown) of the target connector when it is fitted to the target connector. The tip end side of the arranging surface 85 has a shovel shape as a whole, and the slightly cylindrical portion 72 is surrounded by the standing portion 74 constituting one of the spoon portions, and the strength of the slightly cylindrical portion 72 is strengthened.

As illustrated in detail in FIG. 4, the outer cover 40 is attached to the opposing surface 45 of the outer conductor housing 70 and has a raised portion 49 that bulges toward the outer conductor housing 70. The ridge portion 49 has, for example, a cross shape as a whole, so that the through hole 48 in which one portion 27 of the terminal 20 is exposed is an intersection, and is formed by two straight portions having a predetermined width, in particular, in one straight portion. The length of the step portion 25 is longer than the length of the step portion 25 from the front end side of the terminal 20 along the axial direction α of the coaxial cable 10. The raised portion 49 of the outer cover 40 is provided with a cross-shaped recessed surface on the surface 78 facing the surface 45 of the outer cover 40, which is recessed toward the opposite side to the one side of the outer cover 40. The recessed portion 79. The ridge portion 49 is provided with the ridge portion 49 and the recess portion 79 that can be accommodated in the recess portion 79, and when the outer cover 40 is disposed on the outer conductor casing 70, the terminal 20 and the outer cover 40 can be formed. The exposed portion 27 of the terminal 20 due to the generated through hole 48 is separated from the outer conductor case 70, and the insulation distance between the exposed portion 27 and the outer conductor case 70 can be increased. Therefore, the terminal 20 can be surely insulated from the outer conductor casing 70 with a simple structure, and the connector can be made short. Further, by providing the ridge portion 49 and the recess portion 79, when the outer cover 40 is placed on the outer conductor case 70, the ridge portion 49 is fitted into the recess portion 79, and the outer cover 40 can be easily positioned on the outer conductor case. 70 is the location. Further, the shape of the ridge portion 49 or the recess portion 79 is not limited to a cross, and may be, for example, a triangular shape or a quadrangular shape. Moreover, the degree of the depression of the depressed portion 79 with respect to the raised portion 49 can also be large. Further, the raised portion 49 does not necessarily have to be completely covered around the edge of the through hole 48 as in the embodiment shown in Fig. 4, but may be, for example, a modification of Fig. 6, or may be at the edge of the through hole 48. The ridge portion 49' is not provided in the vicinity, and the ridge portion 49' is provided only at a portion away from the edge. It is important to use the raised portion 49' and the recessed portion 79 to separate the exposed portion 27 from the outer conductor casing 70. For example, the cross portion may be discontinuously formed. In particular, since the outer conductor casing 70 is formed of a plate-like metal, the recessed portion 79 can be easily formed by press working, and the manufacturing cost can be lowered. Further, the recessed portion 79 also has a role of reinforcing the strength of the outer conductor casing 70. Further, in the modification of Fig. 6, although the shapes of the crimping pieces 50A' and 50B' are different from those of the crimping pieces 50A, 50B of the embodiment of Fig. 3, their functions are basically the same as those of Fig. 3. The tabs 50A, 50B are identical. The members corresponding to the embodiment of Fig. 3 are denoted by the same reference numerals as those of Fig. 6.

The slightly cylindrical portion 72 is coupled to the arrangement surface 85 in a state in which the bent portion 72' is bendable. When the outer cover 40 is placed at a predetermined position on the outer conductor casing 70, the substantially cylindrical portion 72 is bent toward the arrangement surface 85. 1 and 5 are all diagrams showing a state in which the slightly cylindrical portion 72 is bent. When the slightly cylindrical portion 72 is bent, the left and right protrusions extending from the front surface portion 45 of the cylindrical portion 42 between the notch 71 of the substantially cylindrical portion 72 and the surface 78 of the outer conductor casing 70 facing the outer cover 40 44 series By sandwiching, the outer cover 40 can be simply attached to the outer conductor housing 70. Similarly, the projection engaged with the front projection 44' is provided on the inner surface of the bent portion 72' of the outer conductor casing 70.

The caulking portion is formed so as to be a pair of caulking portions that are disposed on the respective sides facing each other with the arrangement surface 85 interposed therebetween. Here, a total of three sets are provided along the axial direction α of the coaxial cable 10, that is, the front side caulking portion 80, the intermediate caulking portion 83, and the rear side caulking portion 84. The front side caulking portions 80A and 80B are mainly required to caulk the pair of crimping pieces 50A and 50B from the outside, and the intermediate caulking portions 83A and B are mainly required to caulk the outer conductor 12, and the rear side caulking portion is required. The 84A and B series are mainly required for caulking the insulating coating 11.

The assembly work of the coaxial cable connector 1 will be described with reference to Figs. 7 to 10 . In addition, both FIG. 9 and FIG. 10 show the state after completion of assembly, but in FIG. 9, for convenience, one part of the front side crimping part 80 is removed, and the state of the crimping piece 50A, 50B is shown.

As shown in FIG. 7, after the outer cover 40 is attached to the outer conductor casing 70, as shown in FIG. 8, the coaxial cable 10 is positioned on the outer cover 40 or the outer conductor outer casing 70. At this time, the core wire 14 of the coaxial cable 10 is disposed on the installation surface 41 of the outer cover 40, and the outer conductor 12 of the coaxial cable 10 is disposed at a corresponding position of the intermediate caulking portion 83, and the insulation of the coaxial cable 10 is also provided. The cover 11 is disposed at a corresponding position of the rear side caulking portion 84.

Next, as shown in FIGS. 9 and 10, the front side caulking portions 80A and 80B, the intermediate caulking portion 83, and the rear side caulking portion 84 are respectively covered. 40 or coaxial cable 10 is caulked. At this time, each of the crimping pieces 50A and 50B is bent to the mounting surface 41 by the contact with the front side caulking portions 80A and 80B. As a result, the core wire 14 of the coaxial cable 10 is sandwiched between the crimping pieces 50A and 50B. It is fixed between the setting surface 41 and the setting surface 41. According to this configuration, the core wire 14 of the coaxial cable 10 can be held and fixed at the same time as the caulking operation of the front side caulking portions 80A and 80B, so that the work can be simplified. Further, the insulator 13 of the coaxial cable 10 is covered only by the extended portions 56, 57 of the pair of crimping pieces 50A, 50B when the pair of crimping pieces 50A, 50B are bent, so that the caulking portion is not It will be special.

When the intermediate crimping portion 83 is caulked to the outer conductor 12, the outer conductor casing 70 is in contact with the outer conductor 12 through the intermediate caulking portion 83, and is electrically connected to the outer conductor 12. As a result, when the coaxial cable connector 1 is fitted to the target connector, the substantially cylindrical portion 72 of the outer conductor housing 70 is connected to the cylindrical housing of the target connector, and the outer conductor 12 of the coaxial cable 10 and the target connector are connected. The cylindrical casing is electrically connected. In the same manner, the rear side caulking portion 84 is caulked to the insulating coating 11, but of course, no qualitative connection occurs here. Further, as is apparent from Fig. 8 and the like, even after the assembly of the coaxial cable connector 1, the substantially cylindrical portion 72 is in the cylindrical direction of the substantially cylindrical portion 72 (the arrow "β" direction in Fig. 2), and is coaxial. Since the cable 10 does not overlap, the size of the outer conductor casing 70 and the outer cover 40 does not become large, so that the connector can be shortened.

Of course, the present invention is not limited to the above-described embodiments, and various modifications can of course be made. Therefore, in the scope of the claims of the present invention, It contains various variants that the practitioner usually performs.

[Possibility of industrial use]

It can be widely used in coaxial cable connectors with terminals and housings that require insulation, or other electrical connectors.

27‧‧‧Exposed Department

40‧‧‧ Cover

44‧‧‧ Protrusion

45‧‧‧ upper face

46‧‧‧ Body Department

48‧‧‧through holes

49‧‧‧Uplift

70‧‧‧External conductor housing

71‧‧‧ gap

73‧‧‧ discontinuous part

74‧‧‧ Standing Department

78‧‧‧ Face

79‧‧‧Depression

85‧‧‧Configuration surface

44'‧‧‧ Protrusion

50A, 50B‧‧‧ crimping piece

53A, 53B‧‧‧ Support Department

56, 57‧‧‧Exit

80A, 80B‧‧‧ front side caulking

83A, 83B‧‧‧ intermediate caulking

84A, 84B‧‧‧ rear side caulking

Claims (6)

A coaxial cable connector comprising: a terminal; and a cover integrally formed with the front terminal; and an outer conductor cover covering at least a portion of the front cover; and a facing surface of the front cover and the front outer conductor cover a through hole for exposing at least a portion of the front terminal, and a ridge portion which is raised toward the front outer conductor casing to pull the exposed portion from the front outer conductor casing; the front outer casing and the front cover are The facing surface is provided with a recessed portion that can accommodate the front ridge portion. The coaxial cable connector according to claim 1, wherein the outer conductor outer casing is formed by processing a plate-shaped metal; and the front recessed portion of the outer conductor outer casing is smashed by the front plate metal. Was formed and formed. The coaxial cable connector according to claim 1 or 2, wherein the exposed portion of the front terminal is located on a side opposite to the contact portion of the front terminal in the thickness direction of the front terminal. The coaxial cable connector according to claim 1 or 2, wherein the outer conductor outer casing is formed of a single sheet metal and has a slightly cylindrical portion connected to the cylindrical outer casing of the target connector; At least a portion of the front cover is sandwiched between the front cylindrical portion and the opposing surface of the front outer conductor casing to attach the front cover to the front outer conductor casing. The coaxial cable connector according to claim 4, wherein the front cylindrical portion is not overlapped with the coaxial cable in the cylindrical direction of the front cylindrical portion. The coaxial cable connector according to claim 1 or 2, wherein the pre-coaxial cable connector is a right-angle connector.