JPS6012683A - Connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a connector that connects electric wires together, for example in a joint box or in a machine.

[Background technology]

Conventionally, this type of connection between electric wires has been performed by making a terminal connection such as a clasping connection or a grip connection, and then performing tape processing. However, such a connection
Work efficiency was extremely poor. Therefore, a connector was developed that allows connections by simply inserting the wire. In other words, this connector has an opening formed in the side of a box-shaped casing, a U-shaped terminal frame inserted into this opening, and a plurality of locking springs placed sideways in this U-shaped terminal frame. Insert sequentially with
The opening was then closed with a lid.

To connect the wires, peel off the wire coating to expose the core wires, insert the core wires into the wire insertion holes provided in the casing, and press the inserted core wires into the U-shaped terminal frame using the pressing piece of the locking spring. It was designed to connect multiple electric wires via a terminal frame by pressure contacting the terminal frame. However, such connectors are difficult to adapt to automated manufacturing because they are inserted into the casing with the locking spring facing sideways.

[Purpose of the invention]

The object of the invention is to provide a connector that is easy to automate.

[Disclosure of the invention]

This invention relates to a casing having a bottomed cylindrical shape and having a cover attachment piece on the edge of the bottomed cylindrical opening, and a state in which one opening of the casing is aligned with the bottomed cylindrical opening of the casing. A cylindrical terminal frame is fitted into the casing, one end is formed as a locking piece, the other end is formed as a pressing piece, and the longitudinal direction of the terminal frame is inserted into the cylindrical terminal frame in the axial direction of the terminal frame. a locking spring disposed together; a cover mounted and fixed by a cover mounting piece on the edge of the opening so as to close the bottomed cylindrical opening of the casing; and a bottom of the bottomed cylindrical opening of the casing; The gist of the present invention is a connector having a wire insertion hole formed in a portion of the cover corresponding to the locking piece of the locking spring.

In other words, this connector is automated because it is inserted vertically (with the longitudinal direction aligned with the axial direction) rather than with the locking spring horizontally as in the past. It becomes easier.

Next, the present invention will be explained in detail based on examples.

FIG. 1 is an exploded perspective view of an embodiment of the present invention, and FIG. 2 is a perspective view of FIG. 1 viewed from the direction of arrow A. In these figures, 1 is a casing in the shape of a rectangular cylinder with a bottom, and a plurality of wire insertion holes 2 are formed in the bottom of the rectangular cylinder with a bottom. Reference numeral 3 denotes a square tubular terminal frame, which is inserted into the casing 1 through the bottomed square tubular opening of the casing 1 . Reference numeral 4 denotes a locking spring having one end formed as a locking piece 5 and the other end formed as a pressing piece 6. It is placed with the top and bottom upside down. In this case, the locking piece 5 of the locking spring 4 is connected to the wire insertion hole 2 provided at the bottom of the casing 1.
You will come face to face with. Reference numeral 7 denotes a cover that closes the bottomed rectangular cylindrical opening of the casing 1, and a wire end receiving recess 8 corresponding to the wire insertion hole 2 provided at the bottom of the casing 1 is formed on the inner circumferential surface of the cover.

This connector is assembled as follows. That is, the terminal frame 3 is inserted into the bottomed rectangular cylindrical opening of the casing l as shown by the arrow, and then the locking springs 4 are alternately turned upside down and the longitudinal direction is aligned with the axis of the terminal frame 3. This is done by inserting it in the correct direction (vertical state) and then closing the opening in the shape of a rectangular cylinder with a bottom with the cover 7. In this case, the cover 7 is attached to the cover mounting piece 7a provided in the bottomed rectangular cylindrical opening of the casing 1.
Align the outer peripheral edges of the
By applying pressure while ultrasonically heating the cover attachment piece 7a with an ultrasonic horn 9 shaped as shown in the figure, the outer peripheral edge of the cover 7 is held by the cover attachment piece 7a as shown in FIG. It will be done. In this way, in this connector, the cover 7 is firmly attached to the casing 1, so that when the core wire 11 of the electric wire 10 is inserted through the wire insertion hole 2, the tip thereof touches the recess 8, as shown in FIG. Cover 7 does not come off even if I press it hard. In this case, by inserting the core wire 11,
It is pressed against the terminal frame 3 by the locking piece 5 and the pressing piece 6. As a result of the core wire 11 being pressed against the terminal frame 3 in this manner, the plurality of electric wires 10 are connected via the terminal frame 3.

The cover 7 is entirely made of transparent resin, and as shown in FIG. 2, its surface is satin-finished except for the portion corresponding to the wire end receiving recess 8. therefore,
When the tip of the core wire 11 reaches the wire end accommodation recess 8, the tip will appear as a shadow on the transparent part, so make sure that the core wire II is pushed deep enough and the connection is complete. You will be able to do it.

As shown in FIG. 6, if the cover 7 is provided with a notch 12 as shown, the notch 12 becomes the voltage detection window 13 (FIG. 7) after the cover 7 is assembled. By inserting the tester pin 14 into the interior through the voltage detection window 13 and bringing it into contact with the terminal frame 3, etc., it becomes possible to test whether or not the electric wire IO is properly connected. That is, even if the wire 10 is inserted into the wire insertion hole 2 of the casing l and the wire insertion hole 2 is blocked, the voltage detection window 1
From 3 onwards, you can check the connection status. In this case, the direction in which the voltage detection tester pin 14 is inserted is opposite to the direction in which the electric wire 10 is inserted, making the work easier.

Further, as shown in FIGS. 8 and 9, a notch 12a is provided at the end of the opening of the terminal frame 3 on the casing 1 side, and the notch is provided on the inner surface of the bottom of the bottom square cylinder of the casing 1. A protrusion 15a corresponding to the terminal frame 12a is provided so that the terminal frame 3 is engaged with the protrusion 15a when the terminal frame 3 is inserted, and a protrusion 16 is provided along the longitudinal direction on the inner upper and lower surfaces of the casing 1 so that the terminal Press the frame 3, and press the terminal frame 3.
It may also be possible to temporarily fix the material. By doing this, even if the terminal frame 3 is inserted into the casing 1 and transported, the terminal frame 3 will not come off from the casing l. Furthermore, as described above, the fitting between the notch 12a provided in the terminal frame 3 and the convex portion 15a provided in the casing 1 prevents the terminal frame 3 from being inserted into the casing 1 in the reverse direction. sell. That is, on the outside of the terminal frame 3, a reinforcing rib 17 is provided along the opening edge on the opposite side to the casing 1 to prevent the terminal frame 3 from bulging when the core wire is inserted, and the reinforcing rib 17 is fully effective at this position. do. Therefore, if it is inserted in the opposite direction, it will not have the anti-stick effect.

Reference numeral 18 denotes a guide rib that acts as a guide for a 1 m core wire.

Note that even if the terminal frame 3 is bent as shown by the chain line in FIG. 10 when the core wire 11 is inserted, the protrusion 16 provided inside the casing 1 will hold the vicinity of the corner of the terminal frame 3. Therefore, almost no force due to the bulge of the terminal frame 3 is applied to the casing l.

In addition, as shown in FIG. 11, by forming a non-slip stepped portion 19 as shown on the outer peripheral surface of the casing 1, it is possible to prevent the portion from being pinched between fingers when connecting the electric wire 10 as shown in FIG. This provides an anti-slip effect. Therefore, safe wiring work can be performed.

Furthermore, by forming a satin-finished surface 20 on the outer peripheral surface of the casing 1 as shown in FIG.
You will be able to write characters for 0 using a pencil, marker pen, etc. In other words, without such a satin-finished surface 20, even if characters are written, they will be rubbed off by fingers or the like during wiring work, and will disappear.However, by forming the satin-finished surface 20, the characters will disappear during wiring work. This will no longer be the case.

In the above embodiment, the wire insertion hole 2 is inserted into the casing 1.
Although it is provided at the bottom of the bottomed rectangular tube, it may also be provided at the cover 7. In this case, it is necessary to form the electric wire end receiving recess 8 in the inner part of the bottom of the casing 1 in the shape of a rectangular cylinder. Further, the shape of the casing 1 is not limited to a prismatic shape.

〔Effect of the invention〕

As described above, since the connector of the present invention can be inserted with the locking spring in a vertical position, it can be easily automated. Moreover, since the cover is firmly fixed by the cover attachment piece, even if the cover is poked by the tip of the electric wire during wiring, the cover will not come off from the casing.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of the present invention, Fig. 2 is a perspective view of Fig. 1 viewed from the direction of arrow A, and Figs. 3 and 4 illustrate how the cover is installed. Figures 5 and 5 are longitudinal cross-sectional views of the state in use, Figures 6 and 7 are illustrations of forming a voltage detection window on the cover, and Figures 8 to 10 are illustrations of temporarily fixing the terminal frame and preventing reverse assembly. Figures 11 and 12 are explanatory diagrams in which a non-slip prevention step is formed on the casing.
3 and 14 are explanatory diagrams in which the casing has been given a satin finish so that writing can be written on it. 1... Casing 2... Wire insertion hole 3... Terminal frame 4... Locking spring 5... Locking piece 6... Pressing piece 7... Cover 7a... Cover mounting piece Department Agent Patent Attorney Takehiko Matsumoto

Claims (6)

[Claims] (1) A casing that has a bottomed cylindrical shape and has a cover removal piece on the edge of the bottomed cylindrical opening, and one opening of the casing that is aligned with the bottomed cylindrical opening of the casing. A cylindrical terminal frame is fitted into the casing in this state, one end is formed as a locking piece, the other end is formed as a pressing piece, and the long direction is inserted into the cylindrical terminal frame in the axial direction of the terminal frame. a locking spring disposed in accordance with the casing; a cover mounted and fixed by a cover mounting piece on the edge of the opening so as to close the bottomed cylindrical opening of the casing; and a bottom portion of the bottomed cylindrical opening of the casing. Alternatively, a connector comprising an electric wire insertion hole formed in a portion of the cover corresponding to the locking piece of the locking spring. (2) The connector according to claim 1, wherein the portion of the cover corresponding to the locking piece is transparent. (3) The connector according to claim 1 or 2, wherein the cover has a cutout for a voltage detection window. (4) The connector according to any one of claims 1 to 3, wherein the terminal frame and the casing are provided with a notch hole and a convex portion for preventing reverse assembly of the terminal frame. (5) The connector according to any one of claims 1 to 4, wherein the casing has a non-slip step. (6) The connector according to any one of claims 1 to 51F1, wherein the casing has a matte surface for writing characters.