JP2964462B2 - Connector for pair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pair of connectors for instantaneous interruption switching.

[0002]

2. Description of the Related Art A communication cable connector used for instantaneous switching of a communication cable has a male (knife type) or a female (fork type) end portion on the connector joining side alternately. Has a body in which a plurality of pairs of conductor terminals having an L-shaped cross section having a U-slit shape are embedded on the other end side, and a first side end on both sides of the body is connected to a mating connector. An elastic piece having a hook-shaped engaging projection formed at a tip thereof for mechanical security;
A multi-pair connector having an engagement recess with respect to the engagement protrusion is formed at the side end of the connector.

[0003]

However, in actual line switching work, there is a case where the work is difficult due to a shortage of a core wire for connecting a multi-pair connector. Therefore, it is possible to connect even if the excess core wire length required for connection is short, and it is a small and simple type with excellent handleability at the site, and it is possible to securely connect the core wires of each pair. Development was desired.

[0004]

That is, the present invention relates to a connector body in which a pair of conductor terminals having one end formed alternately in a male or female shape and the other end formed in a U-slit shape are embedded. The connector is provided with a cover for the connector in which at least one pair of beard-like projections for holding a core is implanted toward a guide groove for inserting a core formed on both sides and attached to the body. At least two sets of protrusions for temporarily fixing the cover and vertical grooves into which the protrusions are engaged are provided on the inner wall surface and side portions of the cover.

[0005]

The core wires inserted into the guide grooves for inserting the core wires formed on both sides of the cover of the connector are lightly held by the beard-shaped projections for holding the core wires. In addition, between the cover and the body of the connector, at least two sets of the side portions of the cover and the protrusions for temporarily fixing the cover formed on the inner wall surface of the body, and the vertical portion in which the protrusions are engaged. Temporarily fastened by the groove. That is, it is possible to realize a primary temporary fixing state with a relatively loose fitting force that enables the cover to be easily removed with a small manual operation force without using a detachment tool.

If the cover is further pushed in than the primary temporary fixing state, the cover cannot be removed with a normal manual operation force, that is, the cover is relatively hard to remove unless a dedicated attaching / detaching tool is used. A secondary temporary fastening state of the state of being mounted by the fitting force is realized.

[0007]

An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a pair of connectors according to the present invention. The connector includes a male terminal 5A, a connector body 1 from which a female terminal 4A protrudes, and a pair of core wires 3 from the connector joining surface side. And a cover 2 attached to the body 1 so as to be held on both sides.

As shown in FIG. 1 and FIG. 2 which is a schematic cross-sectional view in the longitudinal direction of the connector, and FIG. 3 which is a front view as viewed from the joint surface side of the connector, the inner wall surface of the body 1 First longitudinal grooves 1A, 1 having a somewhat different width and provided vertically to guide the cover 2 in the pushing direction.
A 'and a first projection 1B protruding substantially in the middle of these vertical grooves.

On the other hand, the second protrusions 2A, 2A are provided on the side of the cover 2 so as to face the protrusions and the vertical grooves, and are engaged with the first vertical grooves 1A, 1A '.
And third projections 2C, 2 immediately above the second projections.
C 'are formed, and a second vertical groove 2G in which the first protrusion 1B is engaged is provided in the middle of these protrusions so as to straddle the guide groove 2D through which the cord is inserted. Have been. When the cover is installed, the projections fall smoothly into the vertical grooves, which greatly reduces the cover pushing force. The tapered surface and the edge have an appropriate angle as needed so that they do not fall off.

A pair of conductor terminals (not shown) having a substantially L-shaped cross section are buried in the body 1, and the connector-joining end of the body 1 is exposed from the body 1 to form the male and female shapes. The other end is exposed to an opening 1C on the cover side (upper side), and a U-slit-shaped terminal 4 for holding a core wire.
B, 5B. These male and female terminals are complementary in shape to each other so as to engage with each other at the time of connector joining to provide mechanical stability to the connector joined state, and to provide electrical connection to the outside by a probing hole on the bottom surface of the connector (not shown). Has become.

Next, the cover 2 is continuously integrated with a cover surface portion 2I, a core wire insertion portion 2J, and an insertion head portion 2K which constitute a connector outer wall portion provided with eaves 2H and 2H 'having slightly different heights at the end. This core wire insertion portion 2J
A guide groove 2D having an R-shape in which the core wire 3 is inserted and arranged is formed on both sides of the cover, and a flexible beard shape is formed from the cover surface portion 2I and the side wall of the insertion head portion 2K on the guide groove side. At least one pair of protrusions 2E and 2F for holding the core wire is provided alternately in the front and rear direction toward the inside of the guide groove.

When the core 3 is inserted into the groove 2D, the projections 2E and 2F come into contact with the core and press lightly, so that there is a risk that the core will come off the connector and fall off during the operation of attaching the core. The workability is greatly improved.
Note that these vertical grooves and projections are provided symmetrically left and right on both sides of the body and the cover.

Next, a specific operation of attaching a core wire to the paired connector will be described in detail with reference to FIGS. First, the cover 2 is lightly fitted into the body 1 so as to be in a temporary temporary fixing state. Here, the primary temporary fixing state means that the second protrusions 2A and 2A 'of the protrusions formed on both side surfaces of the insertion head portion 2K of the cover 2 correspond to the first vertical groove portions 1A and 1A of the body 1. In this state, the cover 2 is engaged with the fallen body 1 at the upper end of 1A ', and the cover 2 is guided by the vertical grooves 1A, 1A', and is slightly movable in the vertical direction. .

The specifications such as the size of the projection, the depth of the vertical groove, the taper angle, and the inner width of the body are such that the cover can be easily removed with a small manual operation force without using a detachment tool. Is designed to ensure a relatively loose fitting force. In addition, the packing style at the time of factory shipment is 1
The next temporary fixing state prevents the cover from being lost,
An improvement in on-site handling can be achieved (FIG. 4).

In the first temporary fixing state, the core wire 3 is attached to the core wire guide grooves 2D on both sides of the cover 2, and this core wire is held by the projections 2E and 2F. At this time, the core wire 3 does not require any preparatory work such as peeling off the coating, and may be set as it is.

Next, the cover 2 is further pushed in to a secondary temporary fixing state. Here, the secondary temporary fixing state
The third protrusions 2C, 2C 'provided on the insertion head 2K on the cover 2 side are formed with the first longitudinal grooves 1A, 1A of the body 1.
A state in which the first protrusion 1B of the body 1 falls into the second vertical groove 2G of the insertion head 2K while being pushed and guided along A '.

In this state, the cover 2 is pushed further than in the primary temporary fixing state, and the cover cannot be removed with a slight manual operation force, and the cover cannot be removed without using a special detaching tool. Various specifications such as the size of the projection, the depth of the vertical groove, the taper angle, and the inner width of the body are designed so as to be mounted with a tight fitting force. In the secondary temporary fixing state, the core wire 3 is connected to the U terminal 4B,
5B, but is not electrically connected to the core conductor and the conductor terminal of the body (FIG. 5).

Further, when the cover 2 is press-fitted into the body 1 using a required connection tool, the third protrusions 2C and 2C 'immediately above the second protrusions fall into the first vertical grooves, and the cover 2 is fitted. At the same time, the core wire 3 becomes U
The core is covered by fitting into the slits of the terminals 4B and 5B. As a result, the U terminal and the core conductor are electrically connected in a mechanically stable state. At this time, the cover is completely fitted into the body, and the work of attaching the cover and the work of connecting the core wire are completed at the same time (FIG. 6). In the present embodiment, two sets of protrusions and vertical grooves into which the protrusions are engaged are provided, but three or more sets may be provided so as to realize a temporary fixing state over two or more steps. .

[0019]

As described above, according to the paired connector of the present invention, it is possible to switch the connection for each pair of cores with a short extra core length, which is difficult with the conventional multiple pair connector. Become. Furthermore, the projections formed opposite to the connector cover and the body and the vertical grooves into which the projections are engaged allow the cover to be easily removed with a slight manual operation force. The cover is impossible to remove with the primary temporary fixing state with a relatively small fitting force and a slight manual operation force, and the fitting force is so tight that the cover cannot be removed without using a special detaching tool. Since the secondary temporary fixing state of the attached state is realized, for example, by setting the cover in the temporary fixing state before shipment from the factory, the cover is not lost at the time of work, and the cover is attached. It also has advantages such as saving labor.

Therefore, it is possible to easily perform on-site wire insertion work, wire connection work to the body terminal using a wire connection tool, cover mounting work, and the like.
An extremely large effect can be obtained in practical use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a primary temporary fixing state of a pair of connectors of the present invention.

FIG. 2 is a side view showing a state of the pair of connectors according to the present invention before the cover is crowned.

FIG. 3 is a front view showing a state of the paired connector according to the present invention before the cover is crowned.

FIG. 4 is a front view showing a primary temporary fixing state in a specific mounting operation of the paired connector according to the present invention.

FIG. 5 is a front view showing a second temporary fixing state in a specific attaching work of the paired connector according to the present invention.

FIG. 6 is a front view showing a final crowned state in a specific mounting operation of the paired connector according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 body 2 cover 3 core wire 1A groove portion 1B protrusion 2A, 2C (first and second) protrusion 2B, 2G (first and second) groove 2D guide groove 2E, 2F (beard-like) protrusion

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuji Sugimasa 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Co., Ltd. (72) Inventor Takafumi Sakaguchi 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Nippon Telegraph and Telephone Corporation (72) Inventor Yasuhiko Tanabe 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Masanori Suezawa 3-8-8 Minamihashimoto, Sagamihara City, Kanagawa Prefecture Sumitomo 3M Limited In-company (72) Inventor Chiho Oike 3-8-8 Minami-Hashimoto, Sagamihara City, Kanagawa Prefecture Within Sumitomo 3M Limited (56) References Japanese Utility Model 1-62661 (JP, U) (58) Field surveyed (Int .Cl. ⁶ , DB name) H01R 4/24

Claims (1)

(57) [Claims] 1. A body of a connector in which a pair of conductor terminals having one end side alternately forming a male or female shape and the other end side having a U-slit shape are embedded, and mounted on the body and on both sides. At least one pair of whisker-like projections for holding the cords are planted toward the formed guide groove for inserting the cords, and the cover is formed on the connector. A pair of connectors, wherein at least two sets of the cover temporary fixing protrusions and the vertical grooves into which the protrusions are engaged are provided.