CN105655767A - Coaxial cable connector having improved insulation performance - Google Patents

Abstract

A coaxial cable connector having improved insulation performance can achieve insulation from terminals and conductor shells with a more simple structure reliably and also achieve low height of the connector. The coaxial cable connector includes a terminal, a shell integarted with the terminal, and an external conductor shell covers at least one part of hte shell. A through hole, which is used for at least exposes a part of the terminal, is arrnaged on the surface opposite to the conductor shell on the shell, a convex part is convexed to the external conductor shell to enable the exposed part of hte terminal to leave from the external conductor shell. A concave for accommudating the convex part is arranged on the surface opposite to hte shell on the external conductor shell.

Description

Coaxial cable connector with improved insulation performance

technical field

The invention relates to a coaxial cable connector, in particular to a coaxial cable connector with improved insulation performance.

Background technique

Patent Document 1 shows an example of a conventional coaxial cable connector. 11 and 12 are schematic cross-sectional views of the coaxial cable connector shown in Patent Document 1. As shown in FIG. Such coaxial cable connectors are used, for example, in information equipment such as mobile phones, smartphones, personal digital assistants (PDAs), and notebook computers, and electronic equipment such as home appliances.

The housing of the connector is formed by a cylindrical outer conductor case 101 . The outer conductor case 101 is manufactured by press-forming a sheet metal material, and is composed of a main body portion 106 having a longitudinal axis 105 as a central axis and a holder portion 107 integrally extending from the main body portion 106 . The terminal 103 is arranged inside the cylindrical portion formed by the outer conductor case 101 and is held in a state of being electrically connected to the core wire 115 of the coaxial cable 104 .

As shown in FIG. 11 , the retainer portion 107 stands upright from the main body portion 6 parallel to the longitudinal axis 105 before assembly of the connector, but when assembled, as shown in FIG. direction of bending. The outer conductor housing 101 is electrically connected to the outer conductor 112 of the coaxial cable 104 when the holder portion 107 is bent in a direction along the transverse axis 108 at right angles to the longitudinal axis 105 . In addition, at this time, a part 102C of the housing 10 is bent toward the longitudinal axis 108 along with the bending of the holder portion 107 by contact with the protrusion 107a provided on the inner wall of the outer conductor case 101, and as a result, the bent housing A part 102C of 10 is disposed between the terminal 103 and the outer conductor case 101 to prevent electrical connection between the terminal 103 and the outer conductor case 101 .

prior art literature

patent documents

Patent Document 1: Japanese Patent No. 2504704

According to the connector structure of the above-mentioned Patent Document 1, even if a part of the terminal 103 is exposed from the case 102, the part 102C of the case arranged between the terminal 103 and the outer conductor case 101 can prevent the exposed portion of the terminal 103 from being exposed. contact with the outer conductor housing.

However, in this conventional connector structure, the terminal 103 and the housing 102 are used as separate members, and a part 102C of the housing 102 is bent to insulate the terminal 103 and the outer conductor housing 101 during assembly, so that structure becomes complex. In addition, in the above configuration, there is also a problem in that the reduction in height of the connector is hindered by the part 102C of the housing 102 sandwiched between the terminal 103 and the outer conductor case 101 .

Contents of the invention

The present invention is made to solve the above-mentioned problems in the conventional connector structure, and its object is to provide a connector that can reliably insulate the terminal and the outer conductor housing with a simpler structure and can achieve a lower height of the connector. Coaxial cable connector.

(1) The coaxial cable connector of the present invention is characterized by comprising: a terminal; a housing integrally formed with the terminal; and an outer conductor housing covering at least a part of the housing, A through hole through which at least a part of the terminal is exposed is provided on the surface of the housing opposite to the outer conductor case, and a raised portion is provided, and the raised portion is raised toward the outer conductor case so that the outer conductor case The exposed portion of the terminal is separated from the outer conductor case, and a recess capable of accommodating the raised portion is provided on a surface of the outer conductor case opposite to the outer case.

According to this configuration, for example, the exposed portion of the terminal generated when the terminal and the case are integrally molded can be separated from the outer conductor case by using the raised portion of the case, thereby increasing the insulation distance between the exposed portion and the outer conductor case. Therefore, it is possible to reliably insulate the terminal and the outer conductor case with a simpler structure, and further, it is possible to reduce the height of the connector. In addition, positioning of the housing with respect to the outer conductor case can be easily performed by fitting the raised portion into the recessed portion.

(2) On the basis of the coaxial cable connector described in (1) above, the following structure may also be adopted: the outer conductor housing is formed by processing plate metal, and the outer conductor housing The depressed portion is formed by crushing (Japanese: 打ち出す) the sheet metal.

Since the depressed portion can be formed only by pressing the plate-shaped metal, the manufacturing cost can be suppressed to be cheap. In addition, since the recessed portion is provided, the strength of the outer conductor case can be improved.

(3) On the basis of the coaxial cable connector described in the above (1) or (2), the following structure may also be adopted: the exposed portion of the terminal is located in contact with the terminal in the thickness direction of the terminal the opposite side of the department.

In order to reliably suppress the vibration of the terminal due to the flow of the resin that occurs during integral molding, it is necessary to press a part of the terminal with a mold. The upper surface side of the displacement part is effective. However, the portion pressed by the mold becomes an exposed portion as a result, and thus, the exposed portion of the terminal includes a portion located on the opposite side to the contact portion of the terminal in the thickness direction of the terminal.

(4) On the basis of the coaxial cable connector described in any one of the above (1) to (3), the following structure may also be adopted: the outer conductor housing is formed of a plate-shaped metal, and has a The substantially cylindrical portion to which the cylindrical housing of the connector connects, the housing is mounted on the outer conductor housing by sandwiching at least a portion of the housing between the substantially cylindrical portion and the facing surface of the outer conductor housing. the outer conductor housing.

According to this configuration, the housing can be easily attached to the outer conductor case using the substantially cylindrical portion that is a part of the outer conductor case.

(5) In the coaxial cable connector described in the above (4), preferably, the substantially cylindrical portion does not have a gap overlapping the coaxial cable in the cylindrical direction of the substantially cylindrical portion. Overlap.

Since the substantially cylindrical portion does not have an overlapping portion with the coaxial cable, the size of the opposing surface of the outer conductor housing and the housing does not increase, and therefore the height of the connector can be reduced.

(6) On the basis of the coaxial cable connector described in any one of the above (1) to (5), the following structure may also be adopted: the coaxial cable connector is a right-angle connector.

According to the present invention, it is possible to provide a coaxial cable connector capable of reliably insulating a terminal and an outer conductor case with a simpler structure and achieving a reduction in the height of the connector.

Description of drawings

1 is a bottom plan view of the coaxial cable connector of the present invention connected to a coaxial cable. Fig. 2 is an exploded perspective view of the coaxial cable connector of the present invention.

Figure 3 is a perspective view of the bottom side of the housing.

4 is a top perspective view of the housing and a bottom perspective view of the outer conductor housing.

Fig. 5 is a sectional view taken along line AA of Fig. 1 .

FIG. 6 is a diagram showing a modified example of the housing.

Fig. 7 is a diagram illustrating an assembly process of the coaxial cable connector.

Fig. 8 is a diagram illustrating an assembly process of the coaxial cable connector.

FIG. 9 is a diagram illustrating an assembly process of the coaxial cable connector.

Fig. 10 is a diagram illustrating an assembly process of the coaxial cable connector.

Fig. 11 is a schematic sectional view of a connector structure of a conventional coaxial cable connector.

Fig. 12 is a schematic sectional view of a connector structure of a conventional coaxial cable connector.

(Symbol Description)

1 coaxial cable connector

10 coaxial cables

11 Insulation film

12 outer conductor

13 insulators

14 core wire

20 terminals

24 connection part

27 exposed parts

40 shells

41 setting surface

42 cylindrical part

46 main body

48 through holes

49 uplift

50 crimping pieces

70 outer conductor housing

72 roughly cylindrical part

73 discontinuous part

80A, 80B front riveting part

83 middle riveting part

84 rear side riveting part

85 configuration plane

detailed description

A preferred embodiment of the present invention will be described with reference to the drawings. In addition, here, a so-called right angle type connector will be described, but the present invention is not limited thereto.

FIG. 1 is a bottom plan view of a coaxial cable connector 1 of the present invention connected to a coaxial cable 10 , and FIG. 2 is an exploded perspective view of the coaxial cable connector 1 . The coaxial cable connector 1 has a left-right symmetrical shape across the central axis, and mainly includes: a conductive terminal 20; an insulating shell 40, the shell 40 is integrally formed with the terminal 20; and an outer conductor housing 70, the outer conductor The housing 70 covers at least a portion of the housing 40 and at least a portion of the coaxial cable 10 . In addition, since the terminal 20 and the housing 40 are integrally formed, they cannot actually be disassembled, but FIG. 2 shows a state where they are separated for convenience. When assembling the coaxial cable connector 1, the terminal 20, the housing 40, and the coaxial cable 10 are sequentially arranged on the outer conductor housing 70 from the bottom side of the coaxial cable connector 1 toward the upper side along the direction of the arrow "β" in the figure. , and fixed to the outer conductor housing 70 .

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

The terminal 20 has a predetermined length along the axial direction α of the coaxial cable 10 . A stepped portion 25 is provided near the middle of the main body portion 26, and the rear end side (24) of the terminal 20 is closer to the coaxial cable 10 than the front end side (22) in the integrally formed housing 40 by using the stepped portion 25, and the other On the one hand, the front end side (22) of the terminal 20 is brought closer to the face 78 of the outer conductor housing 70 than the rear end side (24). The rear end side (24) of the terminal 20 is provided with a connection portion 24 that is in contact with the core wire 14 of the coaxial cable 10. When the coaxial cable connector 1 is assembled, the core wire 14 of the coaxial cable 10 is arranged on the connection portion twenty four.

In addition, a contact portion 22 that contacts a center terminal (not shown) of a counterpart connector is provided on the front end side ( 22 ) of the terminal 20 . The contact portion 22 is provided in a state of rising toward the contact side with the mating connector, and is formed as an elastic displacement portion 22' composed of two pieces capable of sandwiching the center terminal of the mating connector. Of course, it is not necessary to form the elastic displacement portion 22', and may be formed as a simple insertion hole, for example.

FIG. 3 is a bottom perspective view of the case 40 integrally formed with the terminal 20, and FIG. 4 is a front perspective view thereof. FIG. 4 also changes the angle of FIG. 2 to show a perspective view of the bottom side of the outer conductor housing 70 . In addition, FIG. 5 is a sectional view taken along line AA of FIG. 1 .

The housing 40 mainly includes a body portion 46 , a cylindrical portion 42 provided on the front end side of the body portion 46 , and cable fixing portions ( 41 , 50 , etc.) provided on the rear end side of the body portion 46 .

Each of the above-mentioned parts is integrally formed with the terminal 20 by resin molding. However, a part of the terminal 20 is also exposed to the outside after the integral molding. Of course, the exposed portion of the terminal 20 includes the connecting portion 24, and also includes the elastic displacement portion 22' of the contact portion 22 and its peripheral portion on the bottom side of the contact portion 22; and the upper surface side of the contact portion 22. A part is a part located on the opposite side (upper surface side) to the contact portion 22 of the terminal 20 in the thickness direction of the terminal 20 and on the side opposite to the outer conductor case 70 . In addition, the fact that a part of the upper surface side of the contact portion 22 is also exposed is caused by a problem specific to integral molding. That is, in order to resist the flow of the resin during integral molding and reliably suppress the vibration of the terminal 20, it is necessary to press a part of the terminal 20 with a mold. It is effective for the mold to press the upper surface side of the elastic displacement portion 22'. However, the portion pressed by the mold remains as the exposed portion 27 formed by the through hole 48 of the resin as a result, whereby the exposed portion 27 of the terminal 20 includes a contact portion with the terminal 20 in the thickness direction of the terminal. 22 parts of the position on the opposite side.

The main body portion 46 has a substantially cubic shape as a whole, but has a protruding portion 47 protruding toward a side closer to the mating connector on its upper surface. This protruding portion 47 can be used as a portion that complements the discontinuous portion 73 of the substantially cylindrical portion 72 of the outer conductor case 70 .

The cylindrical part 42 at the front end side of the main body protrudes from the upper surface part 45 toward the contact side with the mating connector, and the contact part 22 of the terminal 20 is arranged at the center of the cylindrical part 42 . When mating with the mating connector, the cylindrical portion 42 is inserted into the inside of the cylindrical case of the mating connector, and at the same time, the center terminal (not shown) arranged at the center of the cylindrical case is inserted into the The contact part 22 is arranged at the center of the cylindrical part 42 and is in contact with the contact part 22 . In order to position the case 40 on the outer conductor case 70 , three protrusions 44 extending from the upper surface portion 45 of the cylindrical portion 42 toward the front side and the left and right sides can be used.

An installation surface 41 on which the core wire 14 of the coaxial cable 10 is installed is provided in the cable fixing portion (41, 50, etc.) on the rear end side of the main body. After the terminal 20 and the housing 40 are integrally formed, the connecting portion 24 of the terminal 20 is also exposed from the installation surface 41 . In addition, although the installation surface 41 is substantially flat, the connection part 24 may be made into the state which protruded or recessed from the installation surface 41. As shown in FIG. Thereby, contact between the terminal 20 and the core wire 14 can be reliably performed. In the illustrated example, a recessed portion 43 is used.

In order to fix the core wire 14, a pair of crimping pieces 50A, 50B are provided on the cable fixing portion (41, 50, etc.). The above-mentioned pair of crimping pieces 50A, 50B are supported by only one side 53 on opposite sides across the installation surface 41, and can be bent toward the installation surface 41 on which the core wire 14 is installed around each support portion 53A, 53B. .

The outer conductor case 70 is formed by punching and bending a sheet metal. The outer conductor case 70 mainly includes an arrangement surface 85 on which the housing 40 and the coaxial cable 10 are arranged; a substantially cylindrical portion 72 provided on the front end side of the arrangement surface 85 ; and a plurality of crimping portions 80 , 83 , 84 . The substantially cylindrical portion 72 is a portion connected to a cylindrical housing (not shown) of the mating connector when mated with the mating connector. The front end side of the arrangement surface 85 is formed in a scoop shape as a whole, and the substantially cylindrical portion 72 is surrounded by the rising portion 74 that constitutes a part of the spoon portion, thereby strengthening the strength of the substantially cylindrical portion 72 .

As shown in FIG. 4 , the housing 40 has a raised portion 49 raised toward the outer conductor case 70 on the opposite surface 45 to the outer conductor case 70 . The protruding portion 49 is, for example, in the shape of a cross as a whole, and is composed of two linear portions having a predetermined width at the intersection of the through hole 48 where a part 27 of the terminal 20 is exposed. In particular, one linear portion extends along the coaxial cable. The axial direction α of 10 extends from the front end side of the terminal 20 longer than the length of the stepped portion 25 . Corresponding to the protruding portion 49 of the housing 40 , a cross-shaped recess 79 is provided on the surface 78 of the outer conductor case 70 opposite to the surface 45 of the housing 40 , and the recess 79 faces the side opposite to the housing 40 . The opposite side is recessed. The protruding portion 49 provides the protruding portion 49 and the recessed portion 79 capable of being accommodated in the recessed portion 79 , and when the case 40 is disposed on the outer conductor case 70 , the through hole 48 is formed when the terminal 20 and the case 40 are integrally formed. The exposed portion 27 of the terminal 20 is separated from the outer conductor housing 70 to increase the insulation distance between the exposed portion 27 and the outer conductor housing 70 . Therefore, the terminals 20 and the outer conductor case 70 can be reliably insulated with a simple structure, and the connector can be reduced in height. In addition, since the protruding portion 49 and the recessed portion 79 are provided, when the case 40 is disposed on the outer conductor case 70, the protruding portion 49 is fitted into the recessed portion 79, and the case 40 can be easily positioned on the outer conductor case 70. specified location. In addition, the shape of the raised portion 49 and the depressed portion 79 is not limited to a cross, and may be, for example, a triangle, a quadrangle, or the like. In addition, the degree of depression of the concave portion 79 may be increased relative to the raised portion 49 . In addition, the raised portion 49 does not need to completely cover the periphery of the through hole 48 as in the embodiment shown in FIG. A raised portion 49' is provided at a portion remote from the edge. In short, it is only necessary to separate the exposed portion 27 from the outer conductor case 70 by the protruding portion 49' and the recessed portion 79. Therefore, for example, the cross portion may be formed discontinuously. In particular, since the outer conductor case 70 is formed of a sheet metal, the recessed portion 79 can be easily formed by pressing, and the manufacturing cost can be kept low. In addition, the recessed portion 79 can also function to reinforce the strength of the outer conductor case 70 . In addition, in the modified example of FIG. 6 , the shapes of the crimping pieces 50A' and 50B' are different from those of the crimping pieces 50A and 50B of the embodiment in FIG. The crimping pieces 50A and 50B of 3 are the same. For components corresponding to the embodiment of FIG. 3 , the same symbols are used in FIG. 6 .

The substantially cylindrical portion 72 is connected to the arrangement surface 85 in a bendable state by the bending portion 72'. After the case 40 is placed at a predetermined position of the outer conductor case 70 , the substantially cylindrical portion 72 is bent toward the placement surface 85 . In addition, all of FIGS. 1 to 5 show the state after the substantially cylindrical portion 72 is bent. When the substantially cylindrical portion 72 is bent, the notch 71 of the substantially cylindrical portion 72 and the surface 78 of the outer conductor case 70 opposite to the housing 40 are sandwiched between the surface portion 45 extending from the cylindrical portion 42 . The left and right protrusions 44 can easily fix the case 40 to the outer conductor case 70 . Similarly, a protrusion that engages with the front protrusion 44' is provided on the inner surface of the bending portion 72' of the outer conductor case 70. As shown in FIG.

The caulking portions are formed as a pair of caulking portions arranged on opposite sides with the arrangement surface 85 therebetween. Here, a total of three sets of front crimping portions 80 , intermediate crimping portions 83 , and rear crimping portions 84 are provided along the axial direction α of the coaxial cable 10 . The front side riveting parts 80A, 80B are mainly used for riveting the paired crimping pieces 50A, 50B from the outside, the middle riveting parts 83A, 83B are mainly used for riveting the outer conductor 12, and the rear side riveting parts 84A, 84B are mainly used for riveting the insulation cover. Film 11.

Referring to FIGS. 7 to 10 , an assembly process of the coaxial cable connector 1 will be described. 9 and 10 both show the assembled state, but in FIG. 9 , for convenience of description, only the state of the crimping pieces 50A and 50B is shown with a part of the front crimping portion 80 removed.

As shown in FIG. 7 , after the housing 40 is mounted on the outer conductor housing 70 , the coaxial cable 10 is positioned on the housing 40 and the outer conductor housing 70 as shown in FIG. 8 . At this time, the core wire 14 of the coaxial cable 10 is installed on the installation surface 41 of the housing 40, and the outer conductor 12 of the coaxial cable 10 is installed at the corresponding position of the intermediate crimping portion 83, and the insulating coating 11 of the coaxial cable 10 is arranged At the corresponding position of the riveted part 84 on the rear side.

Next, as shown in FIGS. 9 and 10 , the front crimping portions 80A, 80B, the middle crimping portion 83 , and the rear crimping portion 84 are crimped to the housing 40 and the coaxial cable 10 , respectively. At this time, each of the crimping pieces 50A, 50B is bent toward the installation surface 41 by contact with the front crimping portions 80A, 80B. As a result, the core wire 14 of the coaxial cable 10 is sandwiched between the crimping pieces 50A, 50B and It is fixed between the installation surfaces 41 . According to this structure, since the core wire 14 of the coaxial cable 10 can be held and fixed simultaneously with the crimping operation of the front side crimping parts 80A and 80B, the work can be simplified. In addition, the insulator 13 of the coaxial cable 10 is only covered by the protruding parts 56 and 57 of the pair of crimping pieces 50A and 50B when the pair of crimping pieces 50A and 50B are bent, and there is no crimping part in particular.

When the intermediate riveting portion 83 is riveted to the outer conductor 12 , the outer conductor case 70 is electrically connected to the outer conductor 12 through the contact between the intermediate riveting portion 83 and the outer conductor 12 . As a result, when the coaxial cable connector 1 is mated with the counterpart connector, the outer portion of the coaxial cable 10 is made The conductor 12 is electrically connected to the cylindrical case of the counterpart connector. The rear crimping portion 84 is crimped to the insulating coating 11 by the same method, but of course no electrical connection is made here. In addition, it can be seen from FIG. 8 etc. that after the coaxial cable connector 1 is assembled, the substantially cylindrical portion 72 does not have the same shape in the cylindrical direction of the substantially cylindrical portion 72 (direction of the arrow “β” in FIG. 2 ). Since the overlapping portion of the axial cables 10 does not increase in size in the direction in which the outer conductor case 70 and the housing 40 face each other, it is possible to reduce the height of the connector.

Of course, the present invention is not limited to the above-described embodiments, and various changes can be made as a matter of course. Therefore, various modified examples that are usually made by those skilled in the art are included in the claims of the present invention.

Industrial availability

It can be widely used in coaxial cable connectors and other electrical connectors including terminals and shells that need insulation.

Claims (6)

1. a concentric cable junctor, it is characterised in that, comprising:

Terminal;

Shell, this shell and described terminal are integrally formed; And

External conductor housing, this external conductor housing by the covering at least partially of described shell,

The through hole exposed at least partially for described terminal it is provided with on the phase opposite relative with described external conductor housing of described shell, and it is provided with protuberance portion, this protuberance portion makes the exposed division of described terminal leave described external conductor housing towards described external conductor housing protuberance

It is provided with the depression portion that can accommodate described protuberance portion on the phase opposite relative with described shell of described external conductor housing.

2. concentric cable junctor as claimed in claim 1, it is characterised in that,

Described external conductor housing is formed by being processed by plate-shape metal,

The described depression portion of described external conductor housing is formed by described plate-shape metal is pounded pressure.

3. concentric cable junctor as claimed in claim 1 or 2, it is characterised in that,

The exposed division of described terminal is positioned at the side contrary with the contact part of described terminal on the thickness direction of described terminal.

4. concentric cable junctor as claimed any one in claims 1 to 3, it is characterised in that,

Described external conductor housing is formed by one piece of plate-shape metal, and has the roughly cylindrical portion that the circular cylindrical shell with the other side's junctor is connected,

By by described in being clipped at least partially of described shell roughly between cylindrical portion and the phase opposite of described external conductor housing, thus described shell is installed on described external conductor housing.

5. concentric cable junctor as claimed in claim 4, it is characterised in that,

Described roughly cylindrical portion does not have the overlapping part overlapping with concentric cable in the cylindrical direction of described roughly cylindrical portion.

6. concentric cable junctor as according to any one of claim 1 to 5, it is characterised in that,

Described concentric cable junctor is right angle connector.