JPH04163873A - Terminal connecting structure of flat cable - Google Patents

Abstract

PURPOSE:To facilitate processing of a wire termination part and provide adaptability for flat cables of various structures by inserting an exposed conductor wire equipped with a specified frame made from a sheet into a connector in opened state, shutting a split member, and connecting the conductor and terminal when the connector is detained. CONSTITUTION:A frame 4 made from a sheet of electric insulative material is equipped in the middle with a window hole 41 wider than conductor wires 11a-11b and also with detent holes 43a, 43b at the two side edges 42a, 42b, and is adhered or welded to the termination part of a flat cable. When this is inserted to a split member 42 situated below a connector 2 followed by shutting of another split member 25 situated above, the conductor wires 11a-11d are electrically connected with terminals 31a-31d arranged inside of receptacles 22a-22d, and at the same time, the detent holes 43a, 43b are detained with projections 27a, 27b, and the fitting operation is done simply and certainly. Locking mechanisms 29 are engaged with one another, and the split members 24, 25 are put in the shut state. Disconnection is made by pushing the split member 25 toward the tip face, disengaging the locking mechanisms 29, and opening the split members.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a terminal connection structure for flat electric wires.

[Prior Art] A flat electric wire has a plurality of conductors lined up in parallel at predetermined intervals, and the ends of a coating layer made of an insulating material are peeled off to expose a predetermined length of each conductor. a box-shaped connector in which a plurality of connection terminals corresponding to each of the conductive wires are arranged in parallel at predetermined intervals inside an open electric wire insertion port;
In the flat electric wire terminal connection structure configured to insert the ends of the flat electric wires into the wire insertion ports of the connector and connect the respective conductors to the connection terminals, a mechanism is provided to ensure the connection and prevent the wires from coming off. The real fairness is 1-2
No. 9986.

[Problems to be Solved by the Invention] However, the terminal connection structure described in the above publication does not allow the conductor exposed at the end of the electric wire to come close to the electric wire insertion port of the connector when the conductor is inserted into the openable/closable connector and closed. The locking protrusions arranged in this manner connect the flat wire and the connector by engaging with the engagement holes formed between the conductors of the band-shaped insulator overlaid on one side of the exposed conductor wire.

In other words, it is necessary to form a holding hole at a predetermined position at the end of the strip-shaped insulator that supports the conductor while avoiding the conductor, so processing is extremely difficult if the intervals between the conductors installed in parallel are not sufficiently wide. It is. Therefore, for example, when adjacent conductors are close to each other, as in the case of a flat electric wire in which a plurality of conductor wires with insulating coatings are arranged in parallel and their sides are fixed together by adhesive or welding means, the conductor wires are placed in the gap between them. This method cannot be implemented if there is no place to form an engagement hole while avoiding this. Furthermore, when the flat wire includes a shielded wire as shown in, for example, Japanese Utility Model Application Publication No. 63-191511, there is a concern that the electrostatic shielding ability will be reduced due to the formation of the engagement hole.

The present invention has been made in view of these points, and is extremely easy to process at the ends of electric wires, suitable for mass production, and applicable to various structures such as those in which adjacent conductors are close to each other and those including shielded electric wires. The object of the present invention is to provide a terminal connection structure that can be applied to flat electric wires without any problems.

[Means for Solving the Problems] The present invention provides a flat electric wire in which a plurality of conductive wires are arranged in parallel at a predetermined interval, the ends of which are exposed by a predetermined length from a coating layer, and an electric wire insertion port that is opened at the tip surface. and a box-shaped connector in which a plurality of connection terminals corresponding to each of the conductive wires are arranged in parallel at predetermined intervals, and the end of each of the conductive wires is inserted into the wire insertion port to connect The terminal connection structure is connected to the terminals respectively; the flat TA has a plate frame having engagement holes on both sides at the end; the connector is lined up with the electric wire insertion port and inserted into the plate frame. It consists of two split bodies that are openable and closable along a plane that includes the electric wire insertion port and the plate frame insertion port, each having a mouth opening at the tip end surface, and the opposite surface of the split body. A pair of locking protrusions that engage with the engagement hole are protruded at predetermined positions; an end of each of the conductive wires is inserted between the divided bodies, and the locking protrusion engages with the engagement hole. As a means for solving the above problem, the above-mentioned conductive wires are connected to respective connection terminals.

[Function] Insert the exposed conductor with the plate frame of the flat wire into the open connector to close the divided body. As a result, the locking protrusions of the connector are engaged with the engagement holes on both sides of the plate frame, and each of the conductive wires is connected to each connection terminal.

[Example] Next, embodiments of the present invention will be described based on the drawings.

1 to 8 show a first embodiment of the present invention, in which flat electric wires are connected to each of a plurality of conductive wires 11a, 11b, 11c, and lid arranged in parallel at predetermined intervals. Well-known electric # such as vinyl chloride resin
! It has a structure in which a covering layer 12 made of edge material is applied, and the ends of the covering layer 12 are peeled off to expose each conductive wire 11a, . . . lid by a predetermined length A. The connector 2 also has wire insertion ports 22a, 22b, 22c opened on the tip surface 21,
22d and each of the conductive wires 11a...ll at a predetermined position inside thereof.
A plurality of connection terminals 3 arranged in parallel at predetermined intervals corresponding to d.
1 a, 3 l b.

31c and 31d, and is formed into a box shape from an electrically insulating material such as hard polyamide resin.

Then, the conductive wires 11a...l exposed at the ends of the flat electric wire 1
Insert the LD into the wire insertion port 22a...22d of the connector 2, and connect the Zendo J111a...lid to each connection terminal 31a1.
．． 31d.

Then, at least the conductive wires 11a at both ends are placed in the center,
11 d is made of an electrically insulating material such as hard polyamide resin, which has a rectangular window hole 41 wider than the distance between 11 and 11 d, and has engagement holes 43 a and 43 b formed at predetermined positions on both sides 42 a and 42 b, respectively. A plate frame 4 formed of a thin plate is provided at the end of the flat electric wire 1, and
i11a...lid is installed on the tip side 44 in parallel to each other across the window hole 41, and the plate frame 4 is placed on top of the lid.
An elongated plate material 46 made of the same material as the above was fixed to the tip side 44 by adhesive or welding. Further, the base end side 45 of the plate frame 4 is fixed to the end portion 14 of the covering layer 12 by adhesive or welding.

In addition, the connector 2 is connected to the insertion ports 2 on both sides 42 a and 42 b of the plate frame 4 in line with the wire insertion ports 22 a . . . 22 d.
3 is formed to open at the tip end surface 21, and is divided into two divided bodies 24 and 25 along a surface including the wire insertion ports 22a, . . . 22d and 23. The divided body 24 located at the bottom of the drawing has a roughly L-shaped cross section, and has electric wire insertion ports 22a, .
is formed so that a part of it is open to the top surface. In addition, the divided body 25 located above and acting as a protein is the divided body 25 located below.
The board frame 4 has side walls 25b, 25b covering both sides thereof, and a top wall 25a covering the upper surface of the upper end, and the lower surface of the top wall 25a has electric wire insertion ports 22a, . . . 22d and the remaining part of the insertion port 23 of the board frame 4. is formed to be open to the bottom surface. These divided bodies 24 and 25 are formed by projections 2 provided at the base end of the lower divided body 24.
8.28, it is connected in a hinged manner and can be opened and closed from the distal end surface 21 side. Furthermore, insertion of the lower divided body 24 is 0.
The engagement holes 43 a, 43 are provided at predetermined positions on the upper surface of the 23 side.
Locking protrusions 27a and 27b are provided in a protruding manner, respectively, to engage with the locking protrusions 27a and 27b. In addition, the distal ends of the two divided bodies 24 and 25 engage with each other when the two divided bodies 24 and 25 are closed.
Engagement protrusions 29a and 29b forming a locking mechanism 29 for preventing the opening of 4.25 are provided, respectively.

In the terminal connection structure having such a configuration, first, as shown in FIG. 6, with the divided bodies 24 and 25 open, the ends of the flat tM wires are inserted into the wire insertion ports 22a, 22d and 23 to a predetermined position. . At this time, in this embodiment, the lower divided body 24 has an L-shaped cross section, and is a flat electric wire! The distance from the end 13 of 1 to the vertical wall inner surface 24a of the divided body 24 is the conductor 11a...l
Since it is formed to be approximately equal to the exposed length 1 of id, if the tip of the flat electric wire 1 is bent to the inner surface 24a of the vertical wall, it can be inserted to a predetermined position.

Further, since the width of the lower divided body 24 is formed to be approximately equal to the width of the plate frame 4, the conductor wires 11a, . Ru. Next, when the divided bodies 24 and 25 are closed together, the conductor wires 11a...lid are connected to the wire insertion ports 22a...22d.
The connection terminals 31a, .
The insertion operation is extremely simple and reliable as a and 27b are engaged with each other. And the lock mechanism 29
The engaging protrusions 29a and 29b of the divided body 24 engage with each other.
．． 25 is in a closed state.

As described above, the flat electric wire connection structure shown in this embodiment has the engagement holes 4 formed on both sides 42 a and 42 b of the plate frame 4.
Locking protrusions 27a formed on the divided body 24 at 3a and 43b,
27b are engaged with each other, the flat electric! 1 and the connector 2 can be reliably connected to prevent the electric wire from coming off, and in particular, there is not enough room to form a direct engagement hole in the part of the coating layer 12 at the end of the flat electric wire l. It is extremely effective in some cases. In addition, the engaging holes 43a and 43b are formed on both sides 42a and 42b of the frame 4, which is separate from the flat electric wire 1, so there is no need to worry about damaging or cutting the conductors 11a and 11d. Can be formed without accompanying, for example, lead! There is no problem even if part or all of the lid is a shielded wire that has a shielding effect. Furthermore, each conducting wire 11a...lid is attached to the plate frame 4.
Since the plate frame 4 itself is constructed and fixed to the end side 44 in parallel to each other across the window hole 41, and the plate frame 4 itself is also fixed to the end of the coating layer 12, the guide a11a exposed through the coating layer 12. - The lids will not be bent by external forces applied during storage, transportation, or connection, resulting in uneven spacing between them, and can be connected to the connection terminals 31a, . . . 31d of the connector 2 very easily and reliably.

In order to release the connected state, for example, the above divided body may be pushed in the direction of the distal end surface 21 to release the locking mechanism 29 and open the divided bodies 24 and 25.

FIG. 9 shows a second embodiment of the present invention, and the overall configuration and operation and effect are almost the same as those of the first embodiment, except that the planar surface of the plate frame 4 is U-shaped with an open end. The points are different. Therefore, the material cost of the plate frame 4 can be reduced, and each exposed conductor wire 11 a -
The effort of fixing 111d to the tip side 44 of the plate frame 4 can be saved. In this embodiment, each conductive wire 11a exposed from the coating layer 12.
・Flat electric wire 1 that does not require much consideration of lid bending
Applicable in the case of

FIG. 10 shows a third embodiment of the present invention, and the overall structure and operation and effect are almost the same as those of the first and second embodiments, except that the plate frame 4 is a flat plate with a rectangular plane. The difference is that the portions of the conductive wires 11a, . . . , lid exposed from the coating layer 12 are bonded or welded to the plate frame 4. Therefore, each conductive wire 11a...lid exposed from the coating layer 12 is securely fixed to the plate frame 4 over its entire length. However, in this embodiment, each conducting wire 11a...li
Since one side of d is blocked by the plate frame 4, the shape of the connection terminal arranged in the outlet is limited.

[Effects of the Invention] It goes without saying that the present invention having the above configuration can ensure the connection and prevent the wire from coming off. For example, even if there is a flat wire in which adjacent conductors are close to each other, it is extremely easy to process, and even if the flat wire includes a shield wire, the formation of the engagement hole improves the electrostatic shielding ability. There is no decline. Further, the frame body having the engagement holes can be peeled off to fix the exposed conducting wires at predetermined intervals, thereby making the connection with the connection terminals more reliable.

[Brief explanation of drawings]

1 to 8 show a first embodiment of the present invention, FIG. 1 is a perspective view showing the state before connection, FIG. 2 is a perspective view showing the connected state, and FIG. 3 is a perspective view showing the state before connection. 1, FIG. 4 is an enlarged sectional view taken along line B-B in FIG. 1, FIG. 5 is a sectional view taken along line D-D in FIG. 3, and FIG. The figure is a side view of the connector showing the open state, FIG. 7 is an enlarged cross-sectional view taken along the line C-C in FIG. 2, and FIG. 8 is an enlarged plan view showing the state in which a portion of FIG. FIG. 9 is a perspective view showing an end of a flat electric wire in a second embodiment of the invention, and FIG. 10 is a perspective view showing an end of a flat electric wire in a third embodiment of the invention. 1... Flat electric wire, 11 a, 11 b, 11
c, 11d...conducting wire, 12=-coating layer, 13
a, 13 b.

Claims (1)

[Scope of Claims] A flat electric wire in which a plurality of conductive wires are arranged in parallel at predetermined intervals and whose ends are exposed by a predetermined length from the coating layer, and each of the conductive wires is provided inside a wire insertion opening opened at the tip surface. A terminal connection comprising a box-shaped connector in which a plurality of corresponding connection terminals are arranged in parallel at predetermined intervals, and each of the conductor ends is inserted into the electric wire insertion port and connected to each of the connection terminals, respectively. The flat electric wire has a plate frame at its end having engagement holes on both sides; and the connector has an insertion opening of the plate frame opening at a distal end side in line with the electric wire insertion opening. It consists of two split bodies that can be opened and closed along a plane that includes the electric wire insertion port and the plate frame insertion port, and that engages with the engagement hole at a predetermined position on the opposing surface of the split body. A pair of locking protrusions are provided that protrude to match; when the end portions of the respective conductive wires are inserted between the divided bodies, the locking protrusions engage with the engagement holes and the respective conductive wires are connected to each other. A terminal connection structure for a flat electric wire, characterized in that it is connected to a connection terminal.