JPS5919915A - Connector - Google Patents

Abstract

PURPOSE:To engage and disengage a plug and a receptacle to and from each other securely through simple operation by providing with a plug which has a couple of projection pieces on its external wall, a receptacle which has an insertion recessed part, and a presser part for pressing the insertion recessed part. CONSTITUTION:The plug 1 has a couple of vane-type projection pieces 13 at necessary parts of the external wall. Further, triangular cut parts 24 are provided at four corners of the boundary part between the holding part 21 and engagement part 22 of the receptacle body 2 and two insertion recessed parts 23 are formed diagonally. The receptable auxiliary 3 has an insertion hole 31 that engages with the engagement part 22 of the main body 2 and presser parts 33 at the root parts of a couple of legs 32 on a diagnoal, and the axuiliary 30 is rotated by 90 deg. to press the insertion recessed parts 23 of the receptacle body 2 by the projection pieces 13 of the plug 1. Consequently, they are engaged and disengaged mutually and securely through a simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for various cables including optical fiber cables, and aims to provide a connector that can be reliably connected and disconnected by simple operations.

The development of data communication systems has been remarkable in recent years, and in addition to conventional coaxial cables, optical fiber cables have recently come to be used for signal propagation. There are many reasons why fiber optic cables have come to be used in the data communications field in addition to coaxial cables, but the main reasons are light weight, high transmission capacity, and no crosstalk. , not receiving electromagnetic induction, etc. Therefore, it is thought that by taking advantage of these advantages, its use in this field will become more widespread in the future.

By the way, in such data communication, it is essential to use a connector as a component in the connection part that connects the main body of the communication device and the cable for signal propagation.Therefore, various proposals regarding connectors have been made, and some products are already on the market. It is appearing. However, with recent remarkable developments in main body devices such as data communication devices, connectors connected to these devices are now required to have even higher reliability. For example, they are required to have stable performance in harsh environments that are incomparable to conventional environmental conditions, such as long-term durability, durability against repeated attachment and detachment, water resistance, moisture resistance, vibration resistance, and high temperature resistance.

In order to satisfy these performance requirements as much as possible in the present invention, we have conducted various studies and focused on performance changes due to the number of repeated attachments and detachments in the plug and receptacle coupling method, and dimensional changes at the mating portion of the plug and receptacle due to vibration. However, we aim to provide superior products by improving these points. That is, the gist of the present invention is to provide: a plug having a pair of protruding pieces on its outer wall; a receptacle body into which the plug can be inserted; and a receptacle body having an insertion recess for accommodating the protruding pieces;
The receptacle auxiliary tool includes a holding part that can be inserted into the plug and fitted into the receptacle main body, and that can selectively press the insertion recess by rotating it. It's in the connector.

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

In Figure 1, (11 is the plug, (2) is the receptacle body, and !31 is the receptacle auxiliary tool. Generally, these are made of metal 1, synthetic resin, ceramic, etc.)
As shown in the figure, the plug 11 has a large diameter part (11) for storing and holding the cable, and a small diameter part (12) for holding the cable core and optical fiber. The part has a pair of wing-like protruding pieces (13)
is provided. In addition, the receptacle body (2) is
A fitting part (2) having a holding part (21) and a notch (22a)
2), a holding part (21) and a fitting part (22).
) Triangular notches (24) are provided at the four corners of the boundary with the plug, and two diagonally opposite locations of the notches (24) are provided to accommodate the protruding pieces (13) of the plug. An insertion recess (23) is provided. On the other hand, the receptacle auxiliary tool (3) has an insertion hole (31) that engages with the fitting part (22) of the receptacle body (2), and the legs (32) are formed in the notch part of the receptacle body (2). (24
). Moreover, this receptacle auxiliary tool (3) is equipped with a presser part (33) at the base of a pair of diagonal legs (32), as shown in FIG.
By rotating the receptacle auxiliary tool (3) 90 degrees, it is possible to selectively press the insertion recess (23) of the receptacle body (2) in which the protruding piece (13) of the plug (1) is housed. Natsumata is here.

Note that (34) in the figure is a recess into which the protruding piece (13) of the plug is inserted.

Therefore, when using the connector of the present invention to connect, for example, an optical fiber cable and a photoelectric conversion element, first insert the optical fiber cable into the large diameter portion (11) of the plug (II) via an appropriate holder etc. On the other hand, a photoelectric conversion element is loaded into the holding portion (21) of the receptacle body (2).

Then, in the relationship as shown in Fig. 1, while fitting the plug (1) into the insertion hole (31) of the receptacle auxiliary tool (3), these are fitted into the fitting part (22) of the receptacle body (2). . As a result, the protruding piece (13) of the plug (1)
is housed in the four insertion parts (23), but in this state the plug (1) and the receptacle body (2) are not completely fixed and will easily come apart if pulled out. Therefore, when the receptacle auxiliary tool (3) is rotated 90 degrees in the fitted state, the holding part (33) shown in Fig. 2 is located above the insertion recess (23) and the plug (1) is This presses down the protruding piece (13), and together with the fitting with the fitting part (22), it is securely connected and will not come apart even if it is pulled back along the axis. FIG. 3 shows this state of connection, in which the protruding piece (13) of the plug (1) is connected to the holding part (33) of the receptacle auxiliary tool (3).
It is shown that it is being held down by In the figure, (4) is an optical fiber cable, (41) is an optical fiber, and (42) is an M protection tube. (5) also plugs the fiber optic cable (4) into (1)
A holder for securely holding the IIc, (lla
) is a protruding edge provided on the opening edge of the plug (1), (22
b) is a protruding edge provided on the opening edge of the fitting portion (22) of the receptacle body. Note that when disconnecting the connector of the present invention, first use the receptacle auxiliary tool (contrary to when connecting).
3) can be easily achieved by rotating the fitting part (22) by 90 degrees and pulling it out against the fitting force of the fitting part (22) or the like.

Specific examples will be described below.

First, a plug, a receptacle auxiliary tool, and a receptacle body, which are almost the same as shown in the figure, were manufactured by injection molding from carbon fiber-containing polybutylene terephthalate resin. The holder was also made of nylon. The original fiber cable is "ESCA 5H-4001J (acrylic optical fiber cable manufactured by Mitsubishi Rayon Co., Ltd., diameter 2.
2 mm) was prepared.

Next, as shown in FIG. 3, one end of the optical fiber cable was fitted with a holder after removing part of the protective tube, and in this state, the end surface was smoothed and fitted into the plug. Then, this plug was fitted into the receptacle body together with the receptacle auxiliary tool in the manner described above, and the receptacle auxiliary tool was rotated to perform the connection. After bonding, they were dissociated by the reverse operation, and bonding and dissociation were repeated to evaluate fitability and bond loss.

At the same time, a vibration test was conducted during bonding, and evaluation was made in the same manner. The results are shown in Table 1. The conventional product used a snap-in type connector made of nylon resin.

Table 1 Note 1) Vibration test is conducted at amplitude 1.511xt frequency 10~
Vibration was applied at 50 Hz in the x- and y-axis directions for 1 hour each.

Note 2) Fitting performance was evaluated by visual observation of the external appearance and observation of the joint using a stereoscopic microscope.

Note 3) Junction loss evaluation uses an LED as the light emitting element and PINs the light receiving element using visible light with a wavelength of 660 nm.
The junction loss was measured by receiving light as a type photodiode.

As can be seen from Table 1, the connector of the present invention is superior to conventional products in terms of mating performance and connection loss after 2,000 coupling-disconnection cycles, and similarly, in vibration tests, even with N It was confirmed that the performance of

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and the shapes of the plug, the receptacle body, and the receptacle auxiliary tool can be changed in various ways depending on the purpose. Fixation of the protruding piece of the plug to the receptacle body using the receptacle auxiliary tool is not limited to that shown in the drawings as long as it can be selectively pressed by rotation. The combination of the uniquely shaped plug, receptacle body, and receptacle auxiliary tool provides the advantage of providing a thick connector with practical effects, such as secure connection, easy operation, and easy disconnection. There is.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a perspective view showing the structure of the connector of the invention, FIG. 2 is a perspective view of a receptacle auxiliary tool, and FIG. FIG. (1)...Plug (11)...Large diameter part, (12)-°-Narrow diameter part (13)...Protruding piece (2)...Receptacle body (21)... Holding part, (22)... Fitting part (23 doors... Four insertion parts (3)... Receptacle auxiliary tool (33)...・Presser foot

Claims (1)

[Claims] A plug having a pair of protruding pieces on an outer wall, a receptacle body that is large enough to fit the plug into it and has an insertion recess for accommodating the protruding pieces, and a receptacle body that is inserted into the plug and fitted into the receptacle body. 1. A connector comprising a receptacle auxiliary tool having a presser portion that can be fitted together and that can selectively press the insertion recessed portion by rotating the receptacle auxiliary tool.