JPS599877A - Plug socket unit with flat cable - 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 The present invention relates to the provision of an outlet device that is useful for directly attaching to a flat power communication cable and connecting the cable to indoor electrical appliances.

In recent years, attempts have been made to use the floor surface for indoor wiring between the carpet and the floor on which it is laid. A method of wiring in an orderly manner while preventing the strange lifting of the wires is being considered.

In order to distribute electrical energy from such a flat cable to various electrical appliances in the room, a dedicated outlet device is required. A device that allows for arbitrary distribution is being considered, and as a result of this study, an outlet device that is installed directly on the cable has been proposed, and it is expected that this device will greatly contribute to labor savings in wiring work.

The outlet device that has already been proposed includes a support frame that receives the flat lower surface of the flat cable, an instrument case that is attached to the other flat upper surface of the flat cable opposite to the support frame, and an instrument case that is built in the case and that has one end. a terminal conductor which is exposed on the cable attachment surface side of the case and has a plurality of stabbing blades protruding from the exposed portion; The device is also provided with a screw that tightens the stabbing blade portion of the terminal conductor in the case to pierce the insulation coating of the cable and connect it to the flat conductor by crimping, and the device can be attached to the cable simply by tightening the screw. The terminal can be connected to a flat conductor.

Since such devices are easy to handle and very convenient,
Even an amateur worker can easily proceed with the work, but,
It was necessary to pay attention to the fact that depending on the tightening of the screw, it directly affects the electrical connection between the terminal and the flat conductor.

It may be possible to use a special tool (torque wrench, etc.) to tighten the screw by applying pre-pressure to these points, but since all of these tools rely on the operator's work to tighten the screws, poor or over-tightening is likely to occur. , there was a risk of poor contact and damage to the equipment.

The object of the present invention is to be able to maintain constant clamping force on the flat conductor by the instrument case and support frame, and to
It is an object of the present invention to provide a flat cable direct-attached outlet device which can provide a stable electrical connection by piercing and crimping a terminal onto a flat conductor.

That is, in the device of the present invention, the screw that connects and tightens the device case and the support frame attached to both flat surfaces of the flat cable is a constant torque tightening element that regulates the tightening force by its own shear fracture. By the self-shearing fracture caused by the tightening of the torque tightening element, the piercing blade portion of the terminal conductor on the instrument case side is crimped to the flat conductor through the insulation coating.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to the accompanying drawings.

In the figure, 10 is a flat cable, 20 is an outlet box, 60 is a support frame, and 40 is a screw.

In the flat cable 10, flat conductors 11, 12, and 13 made of three strips of copper strips or the like are arranged at intervals, and two plastic films are attached from both sides of each conductor and then fused to form an insulating coating 14. has been done.

The conductors 11, 13 on both sides are used as respective phase conductors for single-phase alternating current, for example, and the middle conductor 12 is used as a ground.

The outlet box 20 has a casing 21 made of an insulating material and serving as an outer covering, and terminal conductors 22, 23, and 24 made of steel plates housed within the casing 21.

The casing 21 has up to two 6-pole plug insertion parts 21a, 21a on the upper surface, and a positioning protrusion 21b on the lower surface.
-, 21b, and further includes plug insertion portions 21a, 21a.
Hole 2 for passing the screw vertically through the gap and on each side
1c, 21c, and 21°.

On the other hand, the terminal conductors 22, 23.24 correspond to the respective flat conductors 11, 12.13 of the cable 10, and 22.2
4 is a terminal for each phase, and 26 is a grounding terminal.

Each terminal conductor 22, 23, 24 is made of a single copper plate or the like and has a respective plug insertion portion 21a, 21a.

The plug insertion portion 21a is disposed internally so as to extend to the plug insertion portion 21a,
21a forms a contact end in the shape of a stopper blade,
The other end is led out from inside the casing 21 to its underside, and has a connection end 22a, 23a corresponding to each flat conductor 11, 12, 13.

24a.

The connecting ends 22a, 23a, 24a extend along the lower surface of the casing 21, and on the surface of the connecting ends 22b, 23b, .
4b... are formed protrudingly.

The blades 22b, 23b, and 24b are formed by cutting out the surface of a copper plate and making the cut pieces stand up, so that they protrude slightly larger than the lower surface of the casing 21, and the protruding form is triangular. Moreover, the triangular apex is the protruding tip.

On the other hand, the main body of the support frame 60 is a frame 61 made of a steel plate or the like, and an insulating 7-piece 61a is attached to the surface on which the cable 10 is placed.

For installation on the floor, etc., insert holes 62.3 at both ends for screws, etc.
2, and up to six sign plates 66, 63.33 and positioning holes 34.34 are drilled in the portion facing the intermediate casing.

The screw 40 for assembling and fastening the casing and the support pedestal has a shear stress concentration portion 41a between a top portion 41a that is engaged with a tool (driver) in the tightening head 41 and a head portion 41c of the screw punch 41b. is obtained by means of a constant torque tightening element formed.

The device of the present invention having the configuration of each part as described above can be assembled to the flat cable 10 as follows.

First, one flat surface of the flat cable 10 is placed on the upper surface of the support pedestal 60 to which the insulating sheet 61a is attached, and then the box 20 is placed on the other flat surface facing upward of the cable 10. Protrusion 21
b, 21b are inserted into the positioning holes 34, 64 of the pedestal 60 through the insulation coating 14 of the cable 10, thereby performing positioning. At this time, the through hole 21C2 of the casing 21
210, 2 IC and frame 61 label 33, 63° 66
and the connecting end 22a of the terminal conductor.

23a, 24a are located directly above each flat conductor 11, 12.13. In addition, the signboard 66 and the hole 21 at the intermediate position
Preferably, a through hole is formed in advance in the flat conductor 12 and the coating 14 between the conductor C and the cover 14.

After completing such a set, now six screws 40, 40.40 are inserted into the through holes 21 of the casing 21.
c, 2tc, 21 signboard 66 of frame 31 through c
．． 33.Thread through 33 and tighten.

This tightening is continued until the shear stress concentration portion 41a is destroyed, and the destruction of the stress concentration portion 4.1d makes tightening impossible, so it can be confirmed that the work has ended at that point.

With this tightening, the connection ends 22a, 23a, 24a of each terminal conductor press against the insulation coating directly above each flat conductor, and the blade parts 22b, 23b, 2. 4b penetrates the insulation coating 14 and reaches the flat surface of each flat conductor 11.12°16.

Such a blade portion 22b.

23b, 24b reach the flat conductors 11, 12.13 before the shear stress concentration part 41a breaks, and by tightening the stress concentration part 41a to the extent that it breaks, the blade part 22b, The flat conductors 11, 12 and 24b are thickened to provide a so-called biting effect.

By doing so, the screw 40 can be tightened to a constant torque, and the blade portion of the terminal conductor can be connected to the flat conductor reliably and to a certain degree, thereby achieving a crimp connection between the terminal conductor and the flat conductor. We will accomplish this. Note that the blade portion of the screw 40 after being tightened to a constant torque may penetrate the flat conductor, but should have a length so that it does not reach the frame.

The blade portion 22a described in the above embodiment.

23a, 2"4a can be formed by attaching and integrating a needle-shaped piece made separately to the main part of the terminal conductor, instead of using a cut-out piece, and the shape is still unknown. There may be various deformations other than the triangular protrusion.

However, the screw 40, that is, the constant torque tightening element, is most commonly of the type described above with a force concentration part formed, and this can be easily done by making the tightening head 41 have a narrow neck shape with a small cross-sectional area in the middle part. This is what you get.

However, in addition to the above, the top part 41a and the head part 41b are made separate,
It is also possible to screw the screw shaft formed on the top portion 41a into the label formed on the head portion 41b and utilize the destruction caused by the tightening of the threaded portion, or alternatively, it is possible to screw the screw shaft formed on the top portion 41a into the label formed on the head portion 41b, and to utilize the destruction caused by the tightening of the threaded portion. It can also be obtained by integrating the surfaces by adhesion and breaking (peeling) the adhesive portion by tightening it.

It goes without saying that the present invention is not limited to the above-described embodiments, but may be modified in various ways without departing from the spirit of the present invention.

As explained above, according to the flat cable direct-attached outlet device of the present invention, the support mount that sandwiches the flat cable in the process of piercing the flat cable with the stabbing blade of the terminal conductor and crimping it to the flat conductor. Since constant torque tightening is performed by self-shearing failure of the screw that connects and fastens the device case, it is possible to easily and reliably confirm the connection of the terminal conductor to the flat conductor by piercing and crimping through the insulation coating. It can be obtained as something stable at all times, and the reliability of an electrical outlet device electrically connected by this type of piercing connection can be improved, and its industrial utility value can be further increased.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention power outlet device assembled to a flat cable, and (A) is a plan view;
(l:I) is a front view, and (c) is a bottom view. Also the second
The figure is a front view showing an example of a screw used in the outlet device of the present invention. 10 flat cable, 11.12, 13: flat conductor, 20: outlet box, 21: casing, 22.
23, 24: Terminal conductor, 22b, 23b, 24b: Blade portion, 60: Support frame, 402 screw, 41: Tightening head, 41d
: Senshinten Power Concentration Department.

Claims (1)

[Claims] 1. A connecting device that is directly attached and connected to a flat cable obtained by insulating a flat conductor, which includes a supporting frame that receives one side of the flat cable, and a supporting frame that receives the other side of the flat cable opposite to this frame. A terminal conductor built into the case and having its end exposed on the cable attachment side of the case and having a plurality of stabbing blades protruding from the exposed portion, and a terminal conductor that penetrates the device case. and screwed into the support frame, and
A screw is used to clamp the flat cable and tighten the piercing blade portion of the terminal conductor in the case so as to pierce the insulation coating of the cable and crimply connect it to the flat conductor. The constant torque tightening element is defined by its own shear fracture, and the constant torque tightening element achieves crimping to the flat conductor through the insulating coating of the stabbing blade by its own shear fracture accompanying the tightening of the constant torque tightening element. A flat cable direct-mounted outlet device that is characterized by the following features: