JP2009042767A - Plug with puller - Google Patents

Abstract

The present invention relates to, for example, a plug that is fitted to a connector for an optical fiber, and it is easy to remove the plug with a single touch. is there.
In a plug fitted to an adapter, a plug whose elastic locking piece provided on the adapter side is expanded by a tapered portion and locked by a stepped portion is a main body of the plug. An unlocking piece provided at a front end portion of the housing and located at a position adjacent to the engaging portion, wherein the locking action of the elastic locking piece is released at the rear end portion of the unlocking piece. The plug 1 is provided with a taper and surrounds the plug housing, and moves with a removal knob movable in the insertion / removal direction.
[Selection] Figure 1

Description

  The present invention relates to a plug with a removal jig. More specifically, the present invention relates to a plug with a removal jig that facilitates easy removal of a plug that is mainly fitted to an optical fiber connector and further increases the mounting density.

  2. Description of the Related Art Conventionally, a plug for a cable that is fitted to an SC type optical connector, for example, an optical fiber connector, is not heightened by removing plug removal parts in order to increase the mounting density. .

  Therefore, in order to remove the fitted plug from the connector, a separate dedicated tool is required, which is inconvenient in terms of convenience. Therefore, a plug with a removal jig has been proposed and known (for example, see Patent Document 1).

Utility Model Registration No. 2579870 (page 2-4, Fig. 1)

  However, even in this case, in order to remove the plug from the adapter, (1) push the extraction jig in the direction opposite to the extraction direction to release the adapter lock, (2) pull the plug while maintaining that state, A two-action extraction operation is required to extract from the adapter. In addition, the punching jig portion is composed of a large number of parts, which requires a large number of assembly steps and increases manufacturing costs. The plug with a removal jig according to the present invention has been proposed to solve such a problem.

In order to solve the above-mentioned problems, the gist of the plug with a removal jig according to the present invention is to expand the elastic locking piece provided on the adapter side at the taper portion in the plug fitted to the adapter. An engaging portion to be locked by the stepped portion is provided at a tip end portion of the plug housing which is the main body of the plug, and is an unlocking piece provided at a position adjacent to the engaging portion,
A taper portion for releasing the locking action of the elastic locking piece is provided at a rear end portion of the locking releasing piece, and moves with a removal knob that surrounds the plug housing and is movable in the insertion / removal direction. That is.
Furthermore, the said latch release piece is provided in the intermediate part of the engaging part divided | segmented into both sides in the direction orthogonal to the insertion / extraction direction.

  According to the plug with the extraction jig according to the present invention, the plug housing can be extracted from the adapter simply by pulling the locking release piece and the extraction knob in the extraction direction of the insertion / extraction direction.

  As described above, in the plug with a removal jig according to the present invention, in the plug fitted to the adapter, the elastic locking piece provided on the adapter side is expanded at the taper portion and is engaged at the step portion. An engaging portion to be stopped is provided at a distal end portion of a plug housing which is a main body of the plug, and is an unlocking piece provided at a position adjacent to the engaging portion, and is provided at a rear end portion of the unlocking piece. A taper portion for releasing the locking action of the elastic locking piece is provided and the plug housing surrounds the plug housing and moves together with the extraction knob movable along the insertion / extraction direction. It is possible to remove the plug from the adapter simply by pulling on the plug, and it is possible to easily remove the plug with a single operation.

  Next, the plug 1 with a removal jig according to the present invention will be described with reference to the drawings. The plug 1 with the extraction jig is mainly described as a plug that is fitted to a connector for an optical cable. However, the plug 1 is not limited to the field of the optical cable but is particularly limited to a normal electrical connector, a coaxial cable connector, or the like. Without departing from the spirit of the present invention, the present invention can be applied to any adapter and plug connection structure.

  As shown in FIG. 1, the plug 1 with the unplugging jig has an elastic locking piece 15 provided on the adapter side (see FIG. 5), which is a mating counterpart, widened by a tapered portion 2 a and a stepped portion. Engaging portions 2c to be locked by 2b are provided at the top and bottom of the plug housing 2 made of synthetic resin, which is the main body of the plug 1, at the top and bottom.

  An unlocking piece 3a is provided at a position adjacent to the engaging portion 2c at an intermediate portion between the engaging portions 2c and 2c separated on both sides in the direction orthogonal to the insertion / extraction direction in the example shown in FIGS. It has been. This is a locking piece for releasing the locking relationship between the elastic locking piece 15 and the engaging portion 2c.

  A taper portion 3b for releasing the locking action of the elastic locking piece 15 is provided at the rear end portion of the locking release piece 3a, and an extending portion 3d extends from the rear end portion. The removal knob 3 that surrounds the outer shell of the plug housing 2 and is movable along the insertion / removal direction and the locking release piece 3a are integrally formed.

  Between the plug housing 2 and the extraction knob 3, there is provided a stopper 4 which is a stopper means made of metal or synthetic resin for restricting relative movement in the insertion / extraction direction. The stopper 4 is fixed to the upper part of the plug housing 2, and the upper part 4 a protrudes from the upper surface of the plug housing 2 and is loosely fitted in the upper opening 3 c of the extraction knob 3.

  When the plug 1 is fitted to the other adapter 8 by the stopper 4, the plug housing 2 and the removal knob 3 are simultaneously moved in the insertion direction (left direction in FIG. 1), and the plug 1 is When the adapter 8 is pulled out, after the locking action of the elastic locking piece 15 is released by the locking release piece 3a of the pulling knob 3, the plug housing 2 and the pulling knob 3 are simultaneously pulled out (FIG. 1). In the right direction).

  As shown in FIGS. 2 to 4, the plug housing 2 and the extraction knob 3 are made of a synthetic resin, and are formed of a plug housing 1a having a fitting portion having an overall rectangular shape and a cylindrical tip portion. It will be.

  As shown in FIG. 1, reference numeral 5 denotes a ferrule for optical fiber connection, reference numeral 6 denotes a flange for holding the ferrule 5, and reference numeral 7 always biases the flange 6 in the fitting / joining direction. A coil spring is shown. The lower portion 4b of the stopper 4 enters the recess 6a of the flange 6 in a loosely fitting state, and prevents the flange 6 biased by the coil spring 7 from coming out in the insertion direction.

  Thus, the stopper 4 also serves as a member for preventing the flange 6 and the ferrule 5 from coming off. Therefore, it is not necessary to prepare a separate pull-out prevention member, and the number of parts is reduced, resulting in cost reduction. Further, at the time of assembly, the stopper 4 fitted with the plug housing 2 and the removal knob 3 is inserted halfway in the radial direction and temporarily assembled, and is pushed in a desired amount at the time of connection, which may cause the flange 6 to move in the insertion / removal direction. The lower portion 4b is loosely fitted into the concave portion 6a.

  A description will be given of a method of fitting to or removing from the counterpart adapter 8 by using the plug 1 with the extraction jig according to the present invention. First, as shown in FIG. 5A, at the time of fitting, when the extraction knob 3 is pushed in the insertion direction, one side wall surface of the opening 3c comes into contact with the upper portion 4a of the stopper 4, and the insertion direction is positioned. Thus, the plug housing 2 and the removal knob 3 move together in the insertion direction.

  The taper portion 2a in the engaging portion 2c at the distal end portion of the plug housing 2 is brought into sliding contact with the locking portion 15a of the elastic locking piece 15 and is expanded outward against the elastic force. Then, as shown in FIG. 5B, the locking portion 15a rides on the upper surface of the engaging portion 2c and moves as it is. The lock release piece 3a moves together with the engagement portion 2c and enters the lock portion 15a.

  Eventually, as shown in FIG. 5 (C), when the locking portion 15a reaches the stepped portion 2b of the engaging portion 2c, the locking portion 15a drops and locks inward due to the expanded elastic repulsive force. Thereby, the fitting of the plug 1 is completed.

  Next, when the plug 1 is removed from the adapter 8, as shown in FIG. 6A, the removal knob 3 of the plug 1 is grasped with a finger and pulled in the removal direction. The extraction knob 3 first changes from the state shown in FIG. 5C to the state shown in FIG. 6A, and moves in the extraction direction with respect to the plug housing 2. The reason why the right wall surface of the opening 3c is in contact with the right side surface of the stopper 4 is obvious because the left wall surface of the opening 3c comes into contact with the left side surface of the stopper 4.

  By the movement of the removal knob 3 in the removal direction, the locking portion 15a of the elastic locking piece 15 on the adapter 8 side expands outward against the elastic force by the action of the tapered portion 3b of the locking release piece 3a. Opened. The plug housing 2 cannot move in the removal direction because the stepped portion 2b is locked to the locking portion 15a.

  Then, as shown in FIG. 6 (B), when the removal knob 3 moves in the removal direction until it comes into contact with the stopper 4, the locking portion 15a is expanded outward and the locking action with the stepped portion 2b is also released. Is done. Therefore, when the extraction knob 3 is moved in the extraction direction, the plug housing 2 is moved together with being pushed by the stopper 4.

  Thus, as shown in FIG. 6 (C), the locking portion 15a that has spread outwardly returns to its original position by elastic repulsion while abutting along the tapered portion 2a, and the plug housing 2 and the removal knob 3 Are removed from the adapter 8. The plug 1 can be removed from the adapter 8 simply by pulling the removal knob 3 in the removal direction.

  Next, according to another embodiment of the present invention, there are cases where a large number of plugs are densely arranged, for example, in a lattice shape, and a finger cannot be directly hung on the plug in the central portion of the lattice shape. There is an example in which the pull tab 9 is used so that the extraction knob 3 can be pulled indirectly in such a case.

  As shown in FIGS. 7 to 8, the pull tab 9 is entirely made of synthetic resin, and is provided with a cover portion 9a fitted on the outer shell of the extraction knob 3 and a locking projection 9b on the tip side. It is comprised from the attaching part 9c fitted by the boot 10 of the plug 1 from the front-end | tip part to the center part, and the pull part 9d provided in a rear-end part.

  As shown in FIG. 8, the pull tab 9 is attached to the plug 1 by locking the locking protrusion 9 b to the extraction knob 3. In this state, the plug 1 is fitted to the counterpart adapter 8. For example, in order to remove the plug 1 from the plugs densely arranged in a lattice shape, the pull portion 9d of the pull tab 9 that can be grasped with a finger is grasped and pulled in the removal direction. The pulling knob 3 is pulled, the locking action of the adapter 8 with the elastic locking piece 15 is released, and the plug 1 is easily pulled out from the adapter 8.

  As described above, the plug 1 with the extraction jig has been described. Further, as shown in FIG. 9, an attenuation film, a filter film, an attenuation fiber, or the like is incorporated in the ferrule 5 as an attenuator 16 for optical transmission. It can be detachably connected in the middle of the optical transmission line. The attenuators 16 can also be connected successfully.

It is the front view (A), the same top view (B), and side view (C) which show a part of plug 1 with the extraction jig | tool which concerns on this invention in a half section. It is a perspective view of the plug housing 1a of the plug 1 with the extraction jig | tool which concerns on the same invention. It is a perspective view of the plug housing 2 in the plug 1 with a extracting jig which concerns on the same invention. It is a perspective view of the extraction knob 3 in the plug 1 with the extraction jig | tool which concerns on the same invention. It is explanatory drawing (A), (B), (C) at the time of fitting of the plug 1 with the extraction jig | tool which concerns on the same invention. It is explanatory drawing (A), (B), (C) at the time of extraction of the plug 1 with the extraction jig | tool which concerns on the same invention. It is the top view (A) of the pull tab 9, the same front view (B), and a side view (C). It is a top view (A), a front view (B), and a side view (C) when the pull tab 9 is attached to the plug 1 with a removal jig according to the present invention. They are a plane sectional view (A), a front view (B), and left and right side views (C) and (D) of an example in which the removal jig is applied to the attenuator 16.

Explanation of symbols

1 Plug with extraction jig, 2 Plug housing,
2a taper part, 2b step part,
2c engaging part, 3 extraction knob,
3a unlocking piece, 3b taper part,
3c opening, 4 stopper,
5 Ferrule, 6 Flange,
7 Coil spring, 8 Adapter,
9 Pull tab, 9a Cover part,
9b Locking projection, 9c Mounting part,
9d pull section, 10 boots,
15 elastic locking piece, 15a locking part,
16 Attenuator.

Claims (2)

In the plug fitted to the adapter, the distal end portion of the plug housing, in which the engaging portion for expanding the elastic locking piece provided on the adapter side at the tapered portion and locking at the stepped portion is the main body of the plug Provided in
An unlocking piece provided at a position adjacent to the engaging portion,
A taper portion for releasing the locking action of the elastic locking piece is provided at a rear end portion of the locking releasing piece, and moves with a removal knob that surrounds the plug housing and is movable in the insertion / removal direction. thing,
A plug with a removal jig characterized by The unlocking piece is provided in an intermediate part of the engaging part divided on both sides in a direction perpendicular to the insertion / extraction direction;
The plug with a punching jig according to claim 1.

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