JP2000113946A - Electrical connector with metal outer cylinder - Google Patents

Abstract

(57) [Problem] To provide an electrical connector with a metal outer cylinder that is easy and reliable to assemble. A contact (1) connected to a tip of a cable (C).
Is inserted in the same direction into a metal outer cylinder 14 having a slit 18 formed in the axial direction and extending at one end in the axial direction, the outer peripheral surface of the cylindrical support 4. The engaging projection 7 formed on the outer cylindrical body 14 is
In the electrical connector to be locked, the locking portion 19 is formed at the back of the slit 18 so as to communicate with the slit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector with a metal outer cylinder.

[0002]

2. Description of the Related Art As a typical example of this type, a coaxial electrical connector is known. In FIG. 4 of the accompanying drawings, a center conductor (not shown) in the insulating endothelium 51, which has been exposed by removing the insulating sheath and the shield wire (both not shown) at the tip, is contacted (not shown). And is held by a cylindrical support 52 made of an insulating material. The contact is usually of a female type, and a pin-type male contact of the mating connector is inserted and connected from an opening 53 formed in the end face of the cylindrical support 52. The cylindrical support 52 has a hinge portion 5 at the rear portion from the middle.
At 4, there is a semi-cylindrical body 55 that can be opened and closed by a butterfly. After the half-cylindrical body 55 is opened, the female contact is placed at a predetermined position, and then closed to hold the female contact. Also, this cylindrical support 52
Is provided with a locking projection 56 on its outer peripheral surface.

[0003] Thereafter, an outer conductor shell 57 as a metal outer cylinder is externally fitted to the cylindrical support 52. that time,
The shield wire described above is connected to the outer conductor shell 57 via a metal sleeve as appropriate.

The outer conductor shell 57 has slits 58 formed at one end in the axial direction at a plurality of positions in the circumferential direction. The outer conductor shell 57 has elasticity so that the diameter can be expanded within a range where the slit 58 extends. And ensures contact with the external conductor of the mating connector. Further, the outer conductor shell 57 has a locking window 59 at an axially intermediate portion thereof.
Are formed, and when the cylindrical support 52 is inserted up to a predetermined position, the cylindrical support 52 is locked with the locking projection 56 to prevent the cylindrical support 52 from coming off. In this example, a plurality of slits 58
One or two slits 58 that face each other in the radial direction are formed at the same position in the circumferential direction.

The outer conductor shell 57 is provided with caulking claws 60 and 61 which are caulked and deformed on the other end side in the axial direction. The swaging claw 60 is for holding the shield wire on the sleeve, and the swaging claw 61 is for holding the outer skin.

[0006]

However, in the conventional connector described above, there is room for improvement in the work of fitting the tubular support and the outer tubular body (outer conductor shell). That is, the locking portion 59 of the outer conductor shell 57 is not always provided at a position that coincides with the slit 58 in the circumferential direction, and may be shifted due to a manufacturing error. Therefore, the operator is required to hold the locking projection 5
It is necessary to assemble while checking whether or not 6 and the locking portion 59 match in the circumferential direction.
Also, the results are not always good.

Furthermore, in the longitudinal direction of the slit 58, the outer conductor shell 57 is easily elastically expanded in diameter due to the presence of the slit 58, so that the locking projection 56 also moves easily. However, beyond the range of the slit 58,
Since there is no longer any slit, the rigidity increases,
6 makes it difficult to move to the locking portion 59.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric connector with a metal outer cylinder which can improve the point of the conventional connector and can assemble easily and reliably.

[0009]

SUMMARY OF THE INVENTION An electrical connector with a metal outer cylinder according to the present invention has a tubular support for enclosing a contact connected to the end of a cable. The outer cylinder support is fitted in the same direction into a metal outer cylinder in which a slit extending in the axial direction and opening at one end in the axial direction is formed. Then, the locking projection formed on the outer peripheral surface of the cylindrical support is locked to the locking portion having the shoulder of the outer cylindrical body, thereby preventing the removal.

In this connector, in the present invention, the locking portion is formed at a position deeper than the opening of the slit so as to communicate with the slit.

According to the connector of the present invention having such features, the cylindrical support is assembled into the outer cylinder by setting the locking projection of the cylindrical support to the position of the slit of the outer cylinder. Then, the tubular support may be pushed into the outer cylinder. The locking projection is guided by the slit, reaches the locking portion, and locks with the locking window by the shoulder.

The present invention is suitable for a coaxial electrical connector in which the tubular support is made of an insulating material and the outer tubular body is an outer conductor shell.

In the present invention, the slits are formed at a plurality of positions in the circumferential direction of the outer cylindrical body, and it is sufficient that the locking portions are formed so as to communicate with the deep portion of at least one slit.

In the present invention, the slit communicating with the locking window is preferably set to have a larger groove width than the slit not communicating with the locking window. This makes it possible to easily find the slit communicating with the locking window. Further, the guide of the locking projection in the slit can be further facilitated.

[0015] Such an effect is achieved by the fact that the slit communicating with the locking portion has a tapered portion at the opening edge of the slit in the radial or circumferential direction for easy introduction of the locking projection. It is also obtained by doing.

Further, in the present invention, the tubular support has a freely openable and closable semi-cylindrical portion formed at least partially in the axial direction by a plane including an axis and connected by a hinge portion. In this case, the hinge portion may also serve as the locking projection.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of a semi-assembled state showing an embodiment in which the present invention is applied to a coaxial electrical connector, and FIG. 2 is a cross-sectional view at the time of completion of assembling.

The coaxial cable C has a central conductor C1 at an axial position, and an insulating inner skin (derivative) C2,
The shield wire C3 braided with the axis and the insulating sheath C4 are formed in layers. The cable C shown in FIG. 1 does not have a shield wire and an insulating sheath.

In the cable C from which the insulating outer skin C4 and the insulating inner skin C2 have been removed by a predetermined length at the ends of the cable, a center conductor C1 protruding from the insulating inner skin C2 is connected to the contact 1. In the present embodiment, the contact 1 has a female shape, and has a contact portion 2 at an end for receiving a male contact. The contact portion 2 is elastically expandable in diameter and has a taper introduction portion 3 for easily introducing a male contact.

The contact 1 and the insulating inner skin C2 are held by a cylindrical support 4 made of an insulating material. The cylindrical support 4
In the present embodiment, a semi-cylindrical body 6 is formed, and a portion from the middle to the rear end is divided into two parts by a plane including an axis, and a half-cylindrical part 6 that can be opened and closed by a hinge part 5 is formed. Have. After the contact 1 is arranged at a predetermined position with the half-cylindrical portion 6 opened, the half-cylindrical portion 6 is closed and locked, whereby the contact 1 and the insulating sheath C of the cable are closed.
2 is retained.

On the outer peripheral surface of the cylindrical support 4, locking projections 7 protruding in the radial direction are provided at appropriate places in the circumferential direction, in this embodiment, at two places facing in the diametrical direction.
As shown in FIG. 2, the locking projection 7 has a guided surface 7A with a gentle slope toward the rear, and a vertical locking surface 7B with a forward slope.
Are formed respectively.

The cylindrical support 4 has a confirmation window 8 penetrating in the radial direction at the position of the taper introduction portion 3 of the contact 1 in the axial direction. The confirmation window 8 enables confirmation of whether the contact 1 is at the normal position in the axial direction, and enlarges the taper introduction portion 3 to facilitate and surely introduce the male contact. To provide space for In addition, a tapered surface is formed in the opening 9 for receiving the male contact formed on the end face of the cylindrical support 4 to facilitate the reception.

In the present embodiment, a metal sleeve 10 is used for connecting the shield wire C3. The sleeve 10 has a cylindrical portion 11 and a tapered portion 12, and the outer periphery of the cylindrical portion 11 has an annular projection 13 at a predetermined position in the axial direction.
have. The protrusion 13 may be a protrusion existing in a part of the circumferential direction instead of the ring. The inner diameter of the cylindrical portion 11 is set so that the sleeve 10 can slide on the inner skin C2 of the cable.

The outer conductor shell 14 has a cylindrical portion 15 and caulking claws 16 and 17 at the rear thereof. Cylindrical part 1
In 5, slits 18 to be opened at one end in the axial direction are formed at a plurality of positions in the circumferential direction, in the present embodiment, at four equal positions. In addition, of the four slits 18, in the inner part of the two slits 18 that are opposed to each other in the diameter line direction,
A window-shaped locking portion 19 communicating with the locking portion 19 is formed. In addition, of the caulking claws 16 and 17, the caulking claw 16
Are used to hold the shielded wire of the cable, and the caulking claw 17 is used to hold the outer skin by caulking deformation.

The connector of the present embodiment is assembled as follows. First, the insulation sheath C4 of the coaxial cable C is removed by a predetermined length to expose the shield wire C3. The sleeve 10 is inserted from the cylindrical portion 11 side between the shielded wire C3 of the cable C and the insulating inner skin C2 so that only the tapered portion 12 is exposed. Part of the shield wire C3 is lifted by the protrusion 13 of the cylindrical portion 11. Here, the cylindrical portion 11 does not shift in the axial direction. In this state, the center conductor C1 of the cable C is
Connect to After the half-cylindrical portion 6 of the cylindrical support 4 is opened and the contactor 1 is placed at a predetermined position, the half-cylindrical portion 6 is closed and locked. Thereby, the contact 1 and the insulating endothelium C2 are held. Thus, the one shown in FIG. 1 is obtained. Next, the tubular support 4 is inserted into the outer conductor shell 14. At this time, the cylindrical support 4 is provided with its locking projections 7.
Is aligned with the position of the slit 18 communicating with the locking portion 19 and is pushed as it is. The locking projection 7 is elastically expanded and deformed in the axial direction range of the slit 18 while the outer conductor shell 14 is automatically guided by the slit 18 to reach the locking portion 19 without difficulty, and the elastic expanded deformation is eliminated. Since the locking projection 7 returns to its original shape, the locking projection 7 locks to the shoulder 20 which is one side of the locking portion at the locking surface 7B. Thus, the assembly of the tubular support 4 and the outer conductor shell 14 is completed. Then, the caulking claw portion 1 of the outer conductor shell 14 is formed.
6 and 17 are deformed by caulking, and shield wire C3,
The state shown in FIG. 2 is obtained by holding the insulating sheath 17.

In this embodiment, the locking portion has a window shape. However, the present invention is not limited to this. In this case, the locking portion may be wider than the slit and have a shoulder portion for locking.

The present invention is not limited to those shown in FIGS. The locking projection and the slit communicating with the locking portion can be deformed. For example, when the cylindrical support has a semi-cylindrical portion that can be opened and closed with a butterfly, the hinge portion or a part of the hinge portion may also serve as the locking projection without using the locking projection as shown in FIG. Good. In that case, it is necessary that the locking portion also has a form corresponding to it.

The slit can be formed as shown in FIGS. First, in FIG. 3A, the groove width of the slit 18A communicating with the locking portion 19 can be larger than the groove width of the slit 18 not communicating with the locking window. By doing so, both slits 18, 18
The distinction of A is made clear, and the guiding of the locking projection is performed easily and reliably.

In FIG. 3B, a tapered portion 18B is formed on the inner surface of the entrance of the slit 18A, and in FIG. 3C, a tapered portion 18C is formed on the slit 18A extending in the depth direction of the slit at the entrance. I have. These also provide the same effect as in the case of FIG.

[0031]

As described above, according to the present invention, the cylindrical support is provided such that the locking projection of the cylindrical support holding the contact is locked to the locking window of the outer cylindrical body such as the outer conductor shell. When assembling the body and the outer cylindrical body, it was decided to form a locking part by communicating with the slit of the outer cylindrical body, so the cylindrical support should be positioned so that the locking protrusion is aligned with the slit, and just push it in as it is The locking projection is automatically guided to the locking portion. Therefore, the trouble of inserting while searching for the locking window is eliminated, and the shift from the slit to the locking portion can be performed without much resistance. Thus, the locking is ensured and the working efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connector according to an embodiment of the present invention in a semi-assembled state.

FIG. 2 is a cross-sectional view of FIG. 1 when assembly is completed.

FIGS. 3A to 3C are perspective views showing modified examples of slits.

FIG. 4 is a sectional view of a conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 4 Cylindrical support body 7 Locking projection 14 Outer cylindrical body (outer conductor shell) 18 Slit 18B Tapered portion 18C Tapered portion 19 Locking portion 20 Shoulder

Claims (6)

[Claims] 1. A cylindrical support body containing a contact connected to a distal end of a cable is fitted in the same direction into a metal outer cylinder body provided with a slit extending in the axial direction and having an opening at one end in the axial direction. An electrical connector for locking a locking projection formed on the outer peripheral surface of the cylindrical support to a locking portion having a shoulder of the outer cylindrical body, wherein the locking portion has the slit deeper than the slit opening. An electrical connector with a metal outer cylinder, wherein the electrical connector is formed in communication with a metal tube. 2. The electrical connector with a metal outer cylinder according to claim 1, wherein the cylindrical support is made of an insulating material, and the outer cylinder is an outer conductor shell. 3. The slit according to claim 1, wherein the slit is formed at a plurality of positions in a circumferential direction of the outer cylinder, and the locking portion is formed to communicate with a deep portion of at least one slit. Electrical connector with metal outer cylinder. 4. The metal outer cylinder according to claim 1, wherein the slit communicating with the locking portion has a larger groove width than the slit not communicating with the locking portion. Body-mounted electrical connector. 5. The slit communicating with the locking portion has a tapered portion formed at an opening edge of the slit in a radial direction or a circumferential direction for easy introduction of the locking projection. The electrical connector with a metal outer cylinder according to any one of claims 3 and 4. 6. The tubular support has a semi-cylindrical portion which is formed at least partially in the axial direction by a plane including an axis and which can be freely opened and closed and connected by a hinge portion. The electrical connector with a metal outer cylinder according to claim 1 or 2, wherein the electrical connector also serves as a locking projection.