JPH10162902A - connector - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the number of parts of a shielded wire connector and simplify the assembling work. SOLUTION: In a housing 10, an inner part 12 surrounded by a shielding shell 20, and a shielding shell 2 are provided.
The outer shell 13 which covers the inner shell 12 from the outside and the connecting part 14 for locally connecting the inner part 12 and the outer part 13 are integrally formed, and the shield shell 20 is arranged in a part other than the connecting part 14. To make room for it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for a shielded electric wire.

[0002]

2. Description of the Related Art An example of a conventional shielded wire connector is shown in FIGS.

[0003] The shielded electric wire 80 shown here has a central conductor (not shown), an internal insulator 81, a shield layer 82 made of copper braid or the like, and an external insulator 83 which are substantially concentric in that order from the inside. doing. At the end of the electric wire, the shield layer 82 is exposed to the outside by peeling the outer insulator 83, and the terminal 84 is fixed to the end of the center conductor.

On the other hand, the connector 90 comprises a cavity (inner housing) 91 and a hood (outer housing) 93 formed of an insulating material such as a synthetic resin, and a shielding shell 92 made of a conductive material such as metal. Have been. The cavity 91 has a cylindrical shape and accommodates an electric wire terminal inside thereof, and a lance (not shown) for fixing the terminal is formed inside the cavity 91. Shell 9 for shield
2 has a cylindrical shield part 92a fitted to the outside of the cavity 91 and a barrel part 92b pressed against the surface of the shield layer 82 integrally. Food 93
Are formed so as to cover the entire shield shell 92 from the outside, and together with the cavity 91 constitute a connector housing.

The connector 90 can be assembled, for example, in the following manner. The terminal 84 is inserted into the cavity 91 and fixed by a lance (not shown). The cavity 91 is inserted into the shield portion 92a of the shield shell 92. Next, the barrel portion 92b is crimped and pressed around the shield layer 82. That is, the shield layer 82 and the shield shell 92 are electrically connected, and a continuous shield barrier is formed over both.

[0006] The whole of the shielding shell 92 is hood 9
3 and fixed by locking means (not shown).

[0007]

SUMMARY OF THE INVENTION
It is composed of three parts, a cavity 91, a shielding shell 92, and a hood grass, and has a large number of parts.
In order to assemble the connector 90, a step of inserting the terminals 84 into the cavity 91, a step of fixing them to the shielding shell 92, and a step of inserting the entire shielding shell 92 into the hood 93 must be performed. Must
Many man-hours are required.

[0008] In view of such circumstances, an object of the present invention is to provide a connector which can be easily manufactured with a simple structure having a small number of parts.

[0009]

As a means for solving the above problems, the present invention provides an inner housing having a terminal accommodating chamber for accommodating a terminal provided at a terminal of a shielded electric wire, and disposing the inner housing from the outside. In a connector provided with a shield member made of a conductive material provided at a position to cover and an outer housing for covering the shield member from the outside, the connector includes the inner housing, the outer housing, and the inner housing and the outer housing in the axial direction. A connection part to be partially connected is integrally formed into a single housing, and the shield member is disposed between the inner housing and the outer housing in a space where the connection part is not provided.

[0010] In this connector, since the inner housing and the outer housing are integrated via the connecting portion,
The number of parts is small. Further, the entire connector can be assembled simply by setting the shield member between the inner and outer housings. When the housing and the shield member are integrally molded, the assembling work is not required.

The specific structure of the housing is as follows:
The connecting portion may be formed at the front end of the housing, and a space for disposing the shield member may be secured in a region behind the connecting portion, or at a position behind the front end of the housing. A plurality of connecting portions that connect the inner housing and the outer housing in a part of the circumferential direction may be formed intermittently in the circumferential direction, and a space for disposing the shield member may be secured between the connecting portions. Good. In these cases, the shield member may be formed with an insertion groove that allows the shield member to be inserted from the rear between the inner housing and the outer housing. By forming an open notch, the shield member can be disposed in the housing without inconvenience while avoiding interference between the shield member and the connecting portion by inserting the shield member into the insertion groove from behind.

A contact portion is formed on the shield member so as to bulge outward, and a contact portion insertion hole penetrating through the outer housing is formed in the outer housing at a position corresponding to the contact portion. If the contact portion projects outside the outer housing through the portion insertion hole, the shield member can be brought into contact with the shield member of the mating connector outside the outer housing. That is, it is possible to easily connect the shield members of the connectors to be connected to each other.

In the present invention, irrespective of the number of inner housings, a plurality of inner housings may be arranged inside the outer housing, and the inner housing and the outer housing may be integrated via a connecting portion. .

In this case, a plurality of inner housings may be collectively covered with a single shield member. However, if a plurality of shield members are arranged such that these shield members individually cover each inner housing, In addition, it is possible to prevent the influence of electromagnetic waves between terminals inserted into each inner housing.

[0015]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG.

In FIG. 1, a connector C1 is provided at an end of a shielded electric wire D1, and a connector C2 is provided at an end of a shielded electric wire D2. It has become so. Each of the shield wires D1 and D2 includes, in order from the inside, a central conductor 52, an internal insulator (not shown), a shield layer 54 made of a copper braid or the like, and an external insulator 56. Then, the center conductor 52 of the shielded wire D1
The terminal T1 is fixed to the male terminal T1 while the terminal T2 is fixed to the terminal of the center conductor 52 of the shielded wire D2. The center conductors 52 are electrically connected to each other.

As shown in FIGS. 2 and 3, the connector D
Reference numeral 1 denotes a single housing 10 and a shield shell (shield member) 20, and the connector D2 also includes a single housing 30 and a shield shell (shield member) 40.

Details of the housing 10 are shown in FIGS. The housing 10 is entirely integrally formed of an insulating material such as a synthetic resin, and includes a cylindrical inner portion (inner housing) 12 and an outer portion (outer housing) 13. The inside of the inner portion 12 is a terminal accommodating chamber 11 for accommodating the male terminal T1, and a lance 12a for locking the male terminal T1 is formed on the inner wall of the terminal accommodating chamber 11. The inner portion 12 and the outer portion 13 are connected only at a part in the circumferential direction by a pair of connecting portions 14 as shown in FIG. 2. In portions other than the connecting portion 14, the inner portion 12 and the outer portion 13 are connected. A shell insertion groove 15 is secured between them. A pair of upper and lower locking recesses 12b are formed on a surface of the inner portion 12 facing the shell insertion groove 15.

The inner portion 12 has a shorter axial dimension than the outer portion 13 and is located forward of the inner portion 12 (see FIGS. 1 and 2).
In (a), the space surrounded by the outer portion 13 is a housing fitting hole 16 into which the housing 30 of the mating connector C2 can be fitted. The outer portion 13 surrounding the housing fitting hole 16 is provided with a fitting holding hole 13a penetrating the housing fitting hole 16 in the radial direction.

The shield shell 20 is entirely made of a conductive material and has an overall shape that can be inserted into the shell insertion groove 15. As shown in FIG. 5, a notch 21 for avoiding interference with the connecting portion 14 is provided at a position corresponding to the connecting portion 14 in the front half (the right half in FIG. 5) of the shielding shell 20. It is formed so as to be opened forward. On the upper and lower surfaces of the shielding shell 20, locked pieces 22 each having a free end whose rear end (the left end in FIGS. 1 and 5) protrude inward are formed.
When the shield shell 20 is inserted into the shell insertion groove 15 until the position 2 fits into the locking recess 12b, the shield shell 20 is locked at that position. Also, in this state, the shielding shell 2
The rear half of the housing 0 covers the housing fitting hole 16 from inside.

The rear end of the shield shell 20 (FIG. 5)
In the left end portion), a leaf spring (shield contact portion) 23 is formed in which a part of the upper and lower walls is bent radially inward. The rear ends of the two leaf springs 23 can be displaced radially inward by bending deformation of the root portions.

On the other hand, a pair of upper and lower lids 17 and 17 'that can be opened and closed are provided at positions corresponding to the two leaf springs 23 at the rear end of the housing 10. These lids 1
The front ends of the members 7 and 17 ′ are integrally connected to the outer portion 13 of the housing 10 via a thin hinge portion 18, and the lids 17 and 17 ′ can be rotated by bending deformation of the hinge portion 18. ing.

At the front ends (right ends in FIG. 1) of both lids 17, 17 ', pressing portions 17a projecting inward from the inner side surfaces thereof.
Is formed at the rear end portion, and an electric wire holding portion 17b projecting inward from an inner surface thereof is formed. As shown in FIG. 4, a locking groove 17c is formed at the lower edge of the upper lid 17, while a locking projection 17d is formed at the rear upper edge of the lower lid 17 '. , This locking projection 17d
Is fitted in the locking groove 17c, so that the closed state of the lids 17, 17 'is maintained. When the male terminals T1 connected to the shielded electric wire D1 are inserted into the terminal accommodating chamber 11, the lids 17 and 17 'are closed, so that the pressing portion 17a is connected to the leaf spring 2
3 is pressed from the outside to bring the leaf spring 23 into contact with the shield layer 54 of the shielded electric wire D1, and the two electric wire holding portions 17b
The shape of the pressing portion 17a and the wire holding portion 17b is set so that the outer portion 56 of the shielded wire D1 is sandwiched from above and below.

Details of the housing 30 are shown in FIGS. This housing 30 is also the housing 10
Similarly to the above, the entirety is integrally formed of an insulating material such as a synthetic resin, and includes a cylindrical inner portion (inner housing) 32 and an outer portion (outer housing) 33. A terminal housing chamber 31 for housing the terminal T2 is provided.
A lance 32a for locking the lock is formed. The inner portion 32 and the outer portion 33 are integrally connected by a connecting portion 34 at the front end (the left end in FIG. 1) of the housing 30.
Behind the connecting portion 34, the inner portion 32 and the outer portion 33
And a shell insertion groove 35 is secured between them. A pair of left and right locking recesses 33b is formed on the surface of the outer portion 33 facing the shell insertion groove 35, and the upper and lower walls of the outer portion 33 are provided with spring piece insertion holes (contact holes) penetrating vertically. A part insertion hole 33c is formed.

The outer shape of the housing 30 is such that the housing 30 itself can be fitted into the housing fitting hole 16 of the housing 10, and the outer surface of the housing 30 fits and holds the housing 10 at the time of the fitting. A fitting holding piece 33a that fits into the hole 13a is formed. The terminals T1 and T2 are also fitted together with the fitting between the housings 10 and 30.

The shield shell 40 is formed of a conductive material similarly to the shield shell 20 and has an overall shape that can be inserted into the shell insertion groove 35, and its front half (the left half in FIG. 7). A contact spring piece (contact portion) 41 having an intermediate portion in the front-rear direction bent outward and a front end formed as a free end is formed on the upper and lower walls of the portion. The rear end (FIG. 2 (b) and FIG.
In the figure, the right end) is a locked end piece 4 which is a free end protruding outward.
The shield shell 40 is inserted into the shell insertion groove 35 until the locked piece 42 fits into the locking recess 33b, so that the shield shell 40 is at that position. It is designed to be locked.
Then, at this position, the contact spring pieces 41 slightly protrude outside the housing 30 through the spring piece insertion holes 33c,
When the housing 30 is fitted into the housing fitting hole 16 of the housing 10, the two contact spring pieces 41 can come into contact with the inner peripheral surface of the shielding shell 20.

The rear end of the shield shell 40 (FIG. 7)
A pair of upper and lower leaf springs (shield contact portions) 43 similar to the leaf springs 23 are formed at the right end of the housing 30. A pair of possible upper and lower lids 37, 37 'are provided. These lids 37, 37 ′ are also provided with an outer portion 33 of the housing 30 through a thin hinge portion 38 having a front end portion.
And the lids 37 and 37 ′ can be rotated by bending deformation of the hinge portion 38.

The front ends (FIG. 1) of both lids 37 and 37 'are also provided.
Pressing portion 37a protruding inward from the inner surface
And an electric wire holding portion 37b projecting inward from the inner surface of the rear end.
And locking means (closed state holding means) (not shown) similar to the locking groove 17c and the locking projection 17d shown in FIG. The male terminal T2 connected to the shielded electric wire D2 is connected to the terminal housing 3
When both the lids 37 and 37 'are closed in the state of being inserted into the first, the pressing portion 37a presses the leaf spring 43 from the outside to bring the leaf spring 43 into contact with the shield layer 54 of the shielded electric wire D2, Further, the shapes of the pressing portion 37a and the wire holding portion 37b are set so that the both wire holding portions 37b sandwich the outer insulator 56 of the shielded wire D2 from above and below.

Next, the connection procedure between the shielded electric wires D1, D2 and the connectors C1, C2, and both connectors C1, C2
Will be described.

As shown in FIG. 1 two-dot chain line and FIG.
The two lids 17, 17 'of the connector C1 (the two lids 37, 37' in the connector C2; hereinafter, parentheses indicate elements on the connector C2 side) are opened.

As shown in FIG. 8, the upper and lower leaf springs 23
(43) The male terminal T1 (female terminal T2) of the shielded wire D1 (D2) is inserted into the terminal accommodating chamber 11 (31) from between the terminals.
And insert the terminal T1 (T2) into the lance 1 shown in FIG.
2a (32a) and the terminal accommodating chamber 11 (3
1) Fix inside.

The lids 17 and 17 ′ (37 and 37 ′) are closed, and the locking groove 17 c and the locking projection 17 d are engaged and fixed in a closed state. At this time, both lids 17, 17 '(3
7, 37 ') is pressed by the leaf spring 23 (37a).
(43) is pressed from both outer sides to bring the end of the leaf spring 23 (43) into contact with the shield layer 54 of the shielded electric wires D1 and D2. Further, both wire holding portions 17b (37b) hold the outer insulator 56 of the shielded wire D1 (D2) from above and below,
The shielded electric wire D1 (D2) is fixed to the connector C1 (C2) side. Thus, the connection between the shielded electric wire D1 (D2) and the connector C1 (C2) is completed.

The housing 10 in the connector C 1
The housing 30 of the connector C2 is fitted into the housing fitting hole 16 of FIG. 1 (the state of FIGS. 1 and 9). As a result, the male terminal T1 and the female terminal T2 are fitted, and the center conductors 52 of the shielded electric wires D1 and D2 are electrically connected to each other. At the same time, both contact spring pieces 4 of connector C2
1 contacts the inner surface of the shield shell 20 in the connector C1, and both shield shells 20 are electrically connected. Therefore, by connecting one of the shield layers 54 of the shield wires D1 and D2 to the ground, the shield layer 54 of the shield wire D1 → the shield shell 20 → the shield shell 40 → the shield layer of the shield wire D2. A series of shield barriers following 54 will be formed.

According to the connectors C1 and C2 described above,
The inner part 12 (32) and the outer part (33) are connected to the connecting part 1
4 (34) and can be integrally formed as a single housing 10 (30), so that the inner housing and the outer housing are different parts as in the related art. The number of parts can be reduced and the structure can be simplified. Also, the housing 10 (30)
Shell 20 in the shell insertion groove 15 (35).
The connector C1 (C2) can be assembled simply by inserting (40), and the number of steps required for assembly can be reduced.

Further, in the connector C2, a spring piece insertion hole 33c is provided in the outer portion 33, and the spring piece insertion hole 3c is formed.
3c, the contact spring piece 41 of the shielding shell 40
Is projected outward of the outer housing 30, so that the contact spring piece 41 can easily contact the shield shell 20 of the mating connector C1.
The electrical connection between the two shells 20 and 40 can be made with a simple structure.

In this embodiment, the housing 1
Although the connectors C1 and C2 completed by inserting the shielding shells 20 and 40 into the shell insertion grooves 15 and 35 after the molding of the housings 0 and 30 are shown, in the present invention, the housing and the shield member are integrally molded. You may make it shape | mold.

In the above-described embodiment, the connectors C1 and C2 in which the shielding shells 20 and 40 come into contact with each other are shown. It does not have to be. In this case, the shield layers of both shielded wires may be individually connected to the ground.

Further, the present invention need not be applied to both connectors C1 and C2 coupled to each other, but may be applied to only one connector C1 (or C2).

FIGS. 10 to 1 show a second embodiment of the present invention.
3 will be described.

In this embodiment, the connectors C1, C2
Is a multi-pole connector. Specifically, as shown in FIGS. 10 and 11, the connector C <b> 1 has a plurality of (three in the illustrated example) inner parts 12 arranged side by side inside a single outer part 13. The respective inner portions 12 are connected to the outer portions 13 through the same connecting portions 14 as described in the first embodiment.
It is integrated with. A terminal receiving chamber 11 is formed inside each inner portion 12, and the same number of housing fitting holes 16 and shielding shells 20 corresponding to each terminal receiving chamber 11 are formed.
Is provided. Each of the inner housings 12 is individually covered from the outside by each of the shielding shells 20, and the housing 1 is located between the shielding shells 20.
The wall 13c formed in the space 0 is interposed.

On the other hand, the lids 17 and 17 'are commonly used for the shield shells 20. That is, the lids 17 and 17 ′ are paired up and down similarly to the first embodiment, and extend in the lateral direction in the same direction as the arrangement direction of the terminal accommodating chambers 11. The same number of pressing portions 17a and electric wire holding portions 1 corresponding to each terminal accommodating chamber 11 and shielding shell 20
7b is formed. When the lids 17 and 17 'are closed, the pressing portions 17a simultaneously press the leaf springs 23, and the wire holding portions 17b hold the wires D so that the pressing portions 17a and 17b are formed. Have been.

On the other hand, as shown in FIGS. 12 and 13, in the connector C2, a plurality (three in the illustrated example) of the outer portions 3 fitted in the respective housing fitting holes 16 of the connector C1.
0a are arranged in the horizontal direction, and these outer portions 30a are integrated to constitute a single outer housing, and each outer portion 30a can be simultaneously fitted into each housing fitting hole 16. In each of the outer portions 30a, the terminal accommodating chamber 3 is provided.
1, an inner portion 32, and a shielding shell 40 are provided, and each inner portion 32 is integrated with the outer portion 30a via a connecting portion 34 similar to that shown in the first embodiment. The terminal housing chambers 31 are individually covered by the shield shells 40.

Also in this connector C2, the lids 37 and 37 '
Are shared for each shield shell 40.
That is, these lids 37, 37 'are also paired up and down,
The same number of pressing portions 37a as the terminal housings 31 and the shielding shells 40 are provided on the inner side surfaces of the lids 37 and 37 ', corresponding to the terminal housings 31 and the shielding shell 40. And an electric wire holding portion 37b. When the lids 37 and 37 'are closed, each pressing portion 37
a simultaneously presses the leaf springs 23, and the wire holding portions 37b hold the wires D so that the pressing portions 37a and 37b
Is set.

As described above, in the present invention, the number of the inner housings (the inner portions 12 and 32 in the illustrated example) may be appropriately set according to the specifications, regardless of the specific number. Regardless of the number of shielding shells 30, 40, a single shielding shell may cover a plurality of inner housings at once, or each inner housing may be individually covered by a shielding shell. You may. In the latter case, it is also possible to prevent the electromagnetic influence between the terminals inserted into each inner housing.

[0045]

As described above, according to the present invention, the inner housing covered by the shield member and the outer housing covering the shield member from the outside are integrated via the connecting portion connecting at a part in the axial direction. Since the shield member is arranged in a space where the connecting portion is not provided between the inner housing and the outer housing, the entire connector can be formed into a simple structure with a small number of parts, and Reduce man-hours required for assembly
There is an effect that the cost can be reduced.

Further, a contact portion which swells outward is formed in the shield member, and a contact portion insertion hole which penetrates the outer housing is formed in the outer housing at a position corresponding to the contact portion. By allowing the contact portion to protrude outside the outer housing through the portion insertion hole, the shield member and the shield member of the mating connector can be brought into contact with the outside of the outer housing, and the connectors to be connected to each other The effect of simplifying the connection between the shield members is obtained.

Further, if a plurality of inner housings are arranged inside the outer housing and the inner housing and the outer housing are integrated via a connecting portion, a plurality of electric wires can be connected with a single connector. The effect is obtained.

In particular, if a plurality of shield members are arranged so that these shield members individually cover the respective inner housings, it is possible to prevent the influence of electromagnetic waves between terminals inserted into the respective inner housings.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing a connection state between connectors according to a first embodiment of the present invention.

2A is a cross-sectional plan view showing a main part of a connector having a male terminal among the connectors shown in FIG. 1, and FIG. 2B is a cross-sectional plan view showing a main part of a connector having a female terminal. .

FIG. 3 is an exploded perspective view of the two connectors.

FIG. 4 is a perspective view of a housing of the connector having the male terminal.

FIG. 5 is a perspective view of a shield shell of the connector having the male terminal.

FIG. 6 is a perspective view of a housing of the connector having the female terminal.

FIG. 7 is a perspective view of a shield shell of the connector having the female terminal.

FIG. 8 is a perspective view showing a state where a shielded electric wire is connected to each of the connectors.

FIG. 9 is a perspective view showing a state where the connectors are connected to each other.

FIG. 10 is an exploded perspective view showing one of the connectors according to the second embodiment of the present invention.

FIG. 11 is a sectional plan view of the connector shown in FIG. 10;

FIG. 12 is an exploded perspective view showing the other of the connectors according to the second embodiment of the present invention.

FIG. 13 is a sectional plan view of the connector shown in FIG. 12;

14A is an assembled perspective view showing an example of a conventional shielded wire connector, and FIG. 14B is an exploded perspective view of the connector.

[Explanation of symbols]

 C1, C2 Connector D1, D2 Shielded wire T1 Male terminal T2 Female terminal 10, 30 Housing 12, 32 Inner part (inner housing) 13, 33 Outer part (outer housing) 14, 34 Connecting part 20, 40 Shielding shell (Shielding member) 30a Outer part (constituting outer housing) 33a Spring piece insertion hole (contact part insertion hole) 41 Contact spring piece (contact part)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuaki Kojima 1-7-10 Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture Inside Harness Research Institute, Inc. (72) Inventor Yuichiro Tsutsumi 1-Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture No. 7-10 Inside Harness Research Institute

Claims (8)

[Claims] 1. An inner housing having a terminal accommodating chamber for accommodating a terminal provided at an end of a shielded electric wire, a shield member made of a conductive material provided at a position covering the inner housing from the outside, and A connector provided with an outer housing covering the inner housing, the outer housing, and a connecting portion for connecting the inner housing and the outer housing in a part of the axial direction thereof into a single housing. ,
A connector, wherein the shield member is disposed in a space between the inner housing and the outer housing where the connecting portion is not provided. 2. The connector according to claim 1, wherein the connecting portion is formed at a front end of the housing, and an arrangement space for the shield member is secured in a region behind the connecting portion. connector. 3. The connector according to claim 2, wherein an insertion groove is formed between said inner housing and said outer housing so that said shield member can be inserted from behind. 4. The connector according to claim 1, wherein a plurality of connecting portions for connecting the inner housing and the outer housing in a part of the circumferential direction are provided intermittently in the circumferential direction at a position behind the front end of the housing. A connector, wherein a space for disposing the shield member is secured between the connecting portions. 5. The connector according to claim 4, wherein the shield member has an insertion groove between the inner housing and the outer housing, through which the shield member can be inserted from behind.
A connector, wherein a notch opened forward is formed at a position corresponding to the connecting portion in the shield member. 6. The connector according to claim 1, wherein a contact portion bulging outward is formed on the shield member, and the outer portion is formed at a position corresponding to the contact portion on the outer housing. A connector, wherein a contact portion insertion hole penetrating through the housing is formed, and the contact portion protrudes outward of the outer housing through the contact portion insertion hole. 7. The connector according to claim 1, wherein a plurality of inner housings are arranged inside the outer housing, and the inner housing and the outer housing are integrated via a connecting portion. The connector characterized by the above. 8. The connector according to claim 7, wherein a plurality of shield members are arranged such that these shield members individually cover each inner housing.