JPH0554920A - Connection structure for conductor - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a connection structure of a flat cable and a lead wire that can be miniaturized. A conductor 7a of a lead wire 7 and one end 4a of an L-shaped intervening terminal 4 are connected near one side 3a of two opposing sides of the holder 3. Each intervening terminal 4 is provided from the connection point with the conductor 7a toward the other side 3b, and the lead wire 7 extends from the other side 3b to the outside of the holder 3. Further, the conductor 6a of the flat cable 6 and the other end 4b of the interposition terminal 4 are connected near one side 3c of the two opposite sides of the holding body 3 to connect each interposition terminal 4 to the conductor 6a. The flat cable 6 is provided from the connection point to the other side 3d, and the flat cable 6 is provided on the other side 3d.
To the outside of the holder 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for a flat cable and a lead wire or a connection structure for a lead wire and a lead wire used in, for example, a cable reel.

[0002]

2. Description of the Related Art A conventional conductor connecting structure is disclosed, for example, in a vehicle steering machine signal device (cable reel) disclosed in Japanese Utility Model Laid-Open No. 64-21988.

A signal device for a steering machine of this vehicle will be described with reference to FIGS. 11 is shown in FIG.
0 shows cross section AA.

The above-mentioned vehicle steering machine signal device includes a fixed body B1, a movable body B2 rotatably mounted on the fixed body B1, and the fixed body B1 and the movable body B.
A lead wire or flat cable B3 housed in a spiral shape in the housing space formed by 2, one end B4a is connected to each conductor B3a exposed from the end portion of the flat cable B3, and the other end B4b is connected from the fixed body B1. An L-shaped intervening terminal B4 that protrudes to serve as a connector pin, a holding body B5 that supports the intervening terminal B4 in accordance with the pitch of each conductor B3a in the flat cable B3, and one end B of the intervening terminal B4.
4a and an injection mold part B6 for covering the holder B5.

The interposition of the intervening terminals B4 by the holder B5 is carried out by positioning the interposer terminals B4 in the molding die and taking them in and molding the holder B5 by molding.

[0006]

Therefore, as shown in FIG. 11, the intermediary terminal B4 is used in the conventional connecting structure of the conductors.
When another conductor wire, that is, a conductor portion B7a exposed from the end portion of the lead wire B7 is connected to the other end B4b of the above, the flat cable and the lead wire extend in the longitudinal direction of the lead wire and the interposition terminal. Since the interposition terminal and the tip of the flat cable are overlapped and connected by spot welding or the like, as shown in FIG. 12, the size of the connection portion is the conductor B7a portion of the lead wire B7 and the intermediary terminal B4. The dimension A of the non-overlapping portion, and the overlapping portion of the conductor B7a portion of the lead wire B7 and the interposition terminal B4 (connection portion)
B, the dimension C of the portion of the other end B4b of the intervening terminal B4 that does not overlap the lead wire B7, and the dimension D of the holding portion.
The dimension E of the portion of the conductor B3a of the flat cable B3 that does not overlap the interposition terminal B4, the dimension F of the portion of the conductor B3a of the flat cable B3 that overlaps the interposition terminal B4 (connection portion), and one end of the interposition terminal B4. On the B4a side, the total is the dimension G of the portion that does not overlap the flat cable B3.
It is difficult to eliminate these portions because the efficiency of connecting the conductor B7a or the conductor B3a and the interposition terminal B4 is reduced if the portions of the dimensions A and E are eliminated.

By the way, in general, a plurality of conductors need to have a structure in which the conductors are wrapped with an insulating material in order to secure mutual insulation or prevent the occurrence of problems such as electric shock. Therefore, when there is a portion indicated by the dimension A and a portion indicated by the dimension E as in the above-mentioned conventional example, an insulating portion for enclosing them is also required. The range of X and Y shown in FIG. 11 corresponds to that portion.

For the above reasons, when the above-mentioned conventional structure is used, the plane area of the portion required for connecting the conducting wire and another conducting wire becomes large, and the cable reel using the connecting structure for the conducting wire is used.
Sometimes it was difficult to design The present invention has been made in view of the above circumstances in the prior art, and an object thereof is to provide a connecting structure of a conductive wire that can be miniaturized.

[0009]

In order to achieve this object, the present invention separates a plurality of conductors, which are exposed from the end of a conductor, through a plurality of intervening terminals provided on a plate-shaped holding body. In the connection structure of the conductors that are respectively connected to the plurality of conductors exposed from the end of the conductor, the tip end of each conductor in at least one conductor and each intervening terminal of two opposite sides of the holding body. It is characterized in that they are connected in the vicinity of one of them, and that each of the intervening terminals and each of the conductors are extended from the respective connection points toward the other side.

[0010]

According to the conductor connecting structure of the present invention, the plurality of conductors exposed from the end of the conductor are connected to the end of another conductor through the plurality of intervening terminals provided on the plate-shaped holder. Since each of the plurality of exposed conductors is connected, the conductor wire and the other conductor wire are electrically connected.

Further, the tip of each conductor in at least one of the conductors and each intervening terminal are connected near one of the two opposite sides of the holder, and each interposing terminal and each conductor are connected together. Since it extends from the location toward the other side, it is possible to prevent the portion of the exposed section of the conductor that is not connected to the intervening terminal from protruding outward from the interposing terminal.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the conductor connecting structure of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an embodiment of a conductor connecting structure according to the present invention. FIG. 1 is an exploded perspective view,
2 is a plan view of the lower case, FIG. 3 is a rear view of the upper case, and FIG. 4 is a top view of the holding body and the interposition terminal. Further, FIGS. 5, 6, 7, and 8 show modified examples.

Referring to FIGS. 1 to 4, the conductor connecting structure of this embodiment is a conductor or flat cable 6.
, Another lead wire, that is, a lead wire 7, an upper case 1, a lower case 2, a holder 3, and six interposing terminals 4.

As shown in FIG. 4, the holding body 3 having a substantially square plate shape has four side edges 3a to 3d.
a and 3b face each other, and side edges 3c and 3d face each other. The holder 3 is made of a hard insulating resin such as ABS resin, and the upper surface of the holder 3 in FIG. 1 has six fittings extending in parallel to each other from the vicinity of its central portion to the vicinity of one side 3a. A groove 5 is formed, and a recess 4c is provided at one end upper part of one side 3a, and a convex portion 4d is provided at the other end lower part thereof. Further, two engaging recesses 4e are provided in the upper part of the other side 3b near both ends. Holder 3
Is fixed to the lower case 2 by fitting the concave portion 4c, the convex portion 4d, and the concave portion 4e into concave and convex portions on a part of the lower case 2, respectively.

The intervening terminal 4 is one side 3a of the holder 3.
One end 4a exposed from the outside to extend vertically upward and the other end 4b exposed to the outside from the side 3c orthogonal to the side 3a.
And in the inside of the holding body 3 in parallel with the upper surface of the holding body 3 and at a distance from each other. In addition, the intervening terminal 4 has one side 3a from one end 4a.
Since it extends toward the other side 3b that faces the other side 4b and also extends from the other end 4b toward the other side 3d that faces the one side 3c, it exhibits an L shape as a whole. There is.

The lead wire 7 is in the vicinity of one side 3a of the holding body 3 via a substantially bag-shaped connector terminal 7b connected to a conductor 7a exposed from the end of the lead wire 7. Is connected to one end 4a of the intervening terminal 4 by means of the lead wire 7 on the holding body 3.
The insulating coating portion 7c of the
It extends to the outside from the other side 3b.

The substantially bag-shaped connector terminal 7 is fitted and connected to one end 4a of the interposition terminal 4, and the connector terminal 7 is caulked and connected to the conductor 7a. Further, the fitting portion and the crimping portion are reinforced by soldering.

The fitting groove 5 is formed by the partition wall 5a and has a groove portion 5b wider than the outer shape of the connector terminal 7b.
The fitting portion 5c having a width narrower than the covering portion 7c of the lead wire and the step portion 5d provided on the bottom surface of the covering portion 7c slightly below the position where the connector terminal 7b borders the covering portion 7c of the lead wire 7.
With. When the lead wire 7 is subjected to a pulling load in the longitudinal direction, the end portion of the connector terminal 7b contacts the step portion 5d, and the portion that resists the load is other than the connecting portion between the connector terminal 7b and the intervening terminal 4. Therefore, the pulling strength of the lead wire 7 can be increased.

A flat cable 6 is disposed on the bottom surface of the holding body 3, and the conductor portion 6a exposed from the end of the flat cable 6 has one side 3c of the holding body 3. In the vicinity, the other end 4b of the interposition terminal is joined by spot welding, and the insulating coating 6d of the flat cable 6 extends to the outside from the other side 3d of the holding body 3.

The upper case 1 is made of a hard insulating resin such as ABS resin, and as shown in FIG.
And a main portion 1a covering the intervening terminal 4 and a flat case.
The flat cable upper overhanging portion 1b extending in the extending direction of the bull 6 and the lead wire upper extending portion 1c extending in the extending direction of the lead wire 7 are provided.

The main portion 1a includes a lateral wall 1d standing on the edges of the inner surfaces of the lead wire overhanging portion 1c that face each other, two sides of the partition wall 5a provided on the holder 3 and two outer sides of the lead wire 7. Holding part 1e for holding the flat body and the inner side 4 of the lead wire 7
Four convex pressing projections 1f for pressing a book, five upper cover partitions 1g interposed between the other ends 4b of the interposition terminals 4, and downwardly extending from the vicinity of the end of the lateral wall 1d, and a lower case at the tip. -A snap portion 1h having a key-like protrusion that fits in a part of the sleeve 2 and a notch portion 1i that is provided at the opposite edge portion of the snap portion 1h and has a hook portion inside thereof.

The flat cable upper overhanging portion 1b is provided with two lateral walls 1 which are erected on the outer sides of both sides of the flat cable 6.
j, and the bottom surface is curved downward to hold the flat cable 6 together with the lower case 2.

Snap portions 1k projecting in a key shape are provided at the lower ends of the two lateral walls 1j and fit into a part of the lower case 2.

The lead wire overhanging portion 1c has two lateral walls 1L which stand upright outside the outer peripheral portion of the lead wire 7, and has a lateral wall 1m having a semicircular opening at the end thereof. You Holes 1n are formed at the lower ends on both sides of the lateral wall 1L, and a part of the lower case 2 is press-fitted therein.

The lower case 2 is made of a hard insulating resin such as ABS resin, and as shown in FIG. 2, the lower main portion 2a enclosing the flat cable 6 and the flat cable 6 are provided.
A flat cable underhanging portion 2b extending in the extending direction and a lead wire underhanging portion 2c extending in the extending direction of the lead wire.

The lower main portion 2a forms a frame pair with a lateral wall 2d standing on the edge of the inner surface of the lead wire underhanging portion 2c facing each other, and a part of the lead wire underhanging portion facing the lateral wall 2d. Two frame bodies 2e, five small protrusions 2f that come into contact with the end face of the coating portion of the flat cable 6, the interposition terminal 4 and the flat cable.
The opening 2g provided below the connecting portion of the conductor 6a of the bull 6
And a holding portion 2h which is located outside the opening 2g and holds the tip of the conductor 6a of the flat cable 6.

The lateral wall 2d extends in the vertical direction from the middle of the lateral wall 2d and separates the connecting portions of the plurality of intervening terminals 4 with the leads, and between the dividing wall 2j and the lower main portion 2a. A gap 2i formed in the flat cable to allow insertion of the flat cable,
A convex portion 2k and a concave portion 2L which are provided on the inner side and are fitted into the concave portion 4c and the convex portion 4d of the holding body 3, respectively, and an engaging portion which is provided on the outer side and which is fitted to the snap 1h of the upper case 1 by the concave and convex portions. Two
with m.

The frame body 2e is provided with a convex portion 2n for sandwiching the engaging concave portion 4e of the holding body 3 and a snap leg 2p which fits into the notch portion 1i of the upper case 1 in a concavo-convex manner.

The flat cable underhanging portion 2b has angular corner recesses 2q provided at the end portions of the bottom surface, and recesses 2r provided on both side surfaces for engaging with projections of the upper case. ..

By the way, the flat cable 6 is provided with a substantially plate-shaped detent 6b which is adhered by a double-sided tape 6e. The protruding portion 2b has a locking portion 6c that is slightly wider than the width of the square recess 2q, and engages with the square recess 2q. Therefore, even if a tensile force is applied to the flat cable 6, the connection portion between the flat cable 6 and the interposition terminal 4 can be protected against the force.

The lead wire underhanging portion 2c holds two lateral walls 2s on both side surfaces, which are frame bodies together with the frame body 2e of the lower main portion 2a, and a lower portion of the lead wire 7 provided at the end portion. It has a lateral wall 2u having a semicircular opening 2t. Protrusions 2v are provided on the upper surfaces of both ends of the lateral wall and are press-fitted into the holes 1n of the upper case 1.

A method of connecting the flat cable and the lead wire using the conductor connecting structure of the above embodiment will be described below.

In the lead wire 7, the covering portion 7c is peeled off to substantially the same length to expose the conductor portion 7a at the tip, and then the conductors 7a are formed.
Then, the connector terminal 7b is caulked and connected. Next, the connector terminal 7b is press-fitted into one end 4a of the interposition terminal 4, and the
The lead wire 7 is press-fitted into the fitting groove 5 of the holding body 3 to form a lead wire block. At this time, the end of the connector terminal 7 is located slightly inside the step 5d.

On the other hand, a detent 6d adhered to one surface of the double-sided tape 6e is fitted into the square recess 2q of the lower case 2.

On the other hand, the coating portion 6d on the front end side of the flat cable 6 is peeled off to expose the conductor 6a. After the peeling, the end face of the covering portion 6 is attached to the small protrusion 2 of the holder 3 after the peeling.
This is performed so that the tip end of the conductor 6a does not travel outside the end face of the holding portion 2h when the tip end of the conductor 6a is held by the holding portion 2h while being brought into contact with f.

Next, a flat case is placed in the gap 2i of the lower case 2.
The end face of the flat cable is brought into contact with the small protrusion 2f through the cable 6, and the flat cable is adhered to the other surface of the double-sided tape 6e to form a flat cable block.

After that, the holding body 3 for the lead wire block
The concave portion 4c, the engaging concave portion 4e, and the convex portion 4d, the convex portion 2k and the convex portion 2 of the lower case 2 of the flat cable block.
The flat cable 6 is sandwiched between the bottom surface of the holder 3 and the lower case 2 while being fitted and integrated so as to be snap-fitted to the n and the recess 2L. After that, the interposer terminal 4 and the conductor portion 6a of the flat cable 6 are spot-welded to form the interposer terminal 4
And connector terminal 7b connection point and connector terminal 7b
Solder the connection between the conductor and the conductor 7a.

Next, the snap leg 2p, the engaging portion 2m, the recess 2r and the protrusion 2v of the lower case 2 are respectively provided with the cutout portion 1i, the snap portion 1h, the snap portion 1k and the hole 1 of the upper case.
Insert n. At that time, the pressing protrusion 1f of the upper case 1 presses the lead wire 7.

In the embodiment of the present invention, the connecting end of the lead wire 7 and the connecting end of the flat cable 6 are provided at right angles, but they may be arranged in opposite directions as shown in FIG. I don't care.

Further, as shown in FIG. 6, one end 4 of the interposition terminal 4 is
The a and the other end 4b may be inside the holder 3.

Further, as shown in FIG. 7, the tip of the conductor 6a of the flat cable may be arranged so as to sandwich the intervening terminal 4 in the vertical direction. In this case, the conductor portion 6a and the intervening terminal 4 can be brought into contact with each other in two places, upper and lower, so that the contact reliability is excellent.

Further, in the present invention, the number of conductors of the flat cable 6 and the lead wire 7 is 6, but it may be two or more such as two. Interposer terminal 4, fitting groove 5, pressing protrusion 1
f, the upper cover partition wall 1g may be changed with the change in the number of conductors of the flat cable 6 and the lead wire 7.

Although the two-sided tape 6e is used for fixing the detent 6b and the flat cable 6, they may be fixed with an adhesive or the like.

FIG. 8 shows another embodiment of the connection structure. In this embodiment, the tip of the conductor 6a of the conductor 6 is connected to the interposition terminal 4 in the vicinity of one side of the holding body 3, and the conductor is U-turned from the connecting portion so that the holding body 3 is held. It is arranged toward the other side. Also in this embodiment, it is possible to prevent the portion of the section that is not connected to the intervening terminal from protruding outward from the interposing terminal, and it is possible to reduce the area of the portion required for connecting the conducting wire and another conducting wire. ..

FIG. 9 shows an example in which one embodiment of the conductor connecting structure of the present invention is used in a cable reel.
A movable body 92 rotatably attached to the fixed body 91; a flat cable 93 housed in a housing space formed by connecting the fixed body 91 and the movable body 92; Connection connectors 95 for connecting lead wires 94 to both ends of the flat cable 93,
It is composed of 96.

[0047]

As described above, according to the present invention, a plurality of conductors exposed from the end portion of a conductor wire are exposed from the end portion of another conductor wire via a plurality of intervening terminals provided in a plate-shaped holder. Connected to each of the plurality of conductors, the tip of each conductor in at least one of the conductors and each intervening terminal are connected in the vicinity of one of the two opposite sides of the holding body. Since the conductor is extended from each connection point toward the other side, it is possible to prevent the portion of the exposed section of the conductor that is not connected to the intervening terminal from protruding outward from the interposing terminal. , It becomes possible to reduce the area of the portion required for connecting the conductor wire and another conductor wire and to electrically connect them. Therefore, it is possible to provide a lead wire connection structure that can be miniaturized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a conductor connecting structure of the present invention.

FIG. 2 is a lower case of an embodiment of the connection structure of the conductive wires shown in FIG.
Plan view

FIG. 3 is a top view of an embodiment of the connection structure of the conductor wires shown in FIG.
Back view

FIG. 4 is a top view of a holding body and an intervening terminal of an embodiment of the conductor connecting structure shown in FIG.

FIG. 5 is an exploded perspective view of a main part of a lead wire connection structure according to another embodiment of the present invention.

FIG. 6 is an exploded perspective view of a main part of a lead wire connection structure according to another embodiment of the present invention.

FIG. 7 is a side view of a main portion of a conductor connecting structure showing another embodiment of the present invention.

FIG. 8 is a side view of a main portion of a conductor connecting structure showing another embodiment of the present invention.

FIG. 9 is an exploded perspective view of a cable reel using an embodiment of a conductor connecting structure of the present invention.

FIG. 10 is a plan view showing a signal device for a vehicle steering machine used for explaining a conventional wiring structure of a connector.

11 is a cross-sectional view of a main part of the signal device for a vehicle steering machine shown in FIG. 7, taken along line AA.

FIG. 12 is used to explain the problems of the prior art,
Side view of main parts of conductor connection structure

[Explanation of symbols]

 1 Upper case 1a Main part 1c Lead wire overhanging part 2 Lower case 2a Lower main part 2b Flat cable underhanging part 2c Lead line underhanging part 2f Small protrusion 2h Holding part 2i Gap 2q Square concave Location 3 Holding body 3a One side 3b The other side 3c One side 3d The other side 4 Interposer terminal 4a One end 4b The other end 5 Fitting groove 5b Groove portion 5c Fitting portion 5d Step portion 6 Flat cable ( Conductor) 6a Conductor 6b Retaining 6c Locking part 7 Lead wire (other conductor) 7a Conductor 7b Connector terminal

Claims (1)

[Claims] 1. A plurality of conductors, which are exposed from the end of the conductor,
In the connection structure of the conductors, each of which is connected to the plurality of conductors exposed from the end of another conductor through the plurality of intervening terminals provided on the plate-shaped holder, at least the tip of each conductor in one conductor is , Connecting each intervening terminal in the vicinity of one of the two opposite sides of the holder, and extending each interposing terminal and each conductor from each connection point toward the other side. Characteristic conductor connection structure.