JPS5848372A - Connector for flat ribbon 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 a novel connector and a method of connecting conductors thereto.

(K) This invention relates to a connector capable of crimping and connecting a plurality of conductors of a flat ribbon cable.

A cable consisting of multiple conductors buried in a sheet of electrically insulating material so as to be parallel and isolated from each other is generally called a "flat ribbon cable" and is widely used in electrical circuits such as computers and communication devices. It is used.

In order to connect a Class 0 flat ribbon cable to a connector, conventionally, the tips of multiple conductors buried in the cable are exposed from the cable's insulating sheet. For example, the corresponding connection portions of a relay printed circuit board provided inside the connector are soldered, and each connection portion of the printed circuit board is soldered to one end of the corresponding electrical contact of the connector. According to this conventional method, a flat ribbon cape with a large number of conductors can be used as a connector! The continuous work is very tedious and requires skill and a lot of time. Also, the size of the connector is large.
There are many problems and disadvantages in increasing the density of recent electronic devices as they become smaller.

SUMMARY OF THE INVENTION In view of the above-mentioned problems and disadvantages of the prior art, it is an object of the present invention to provide a connector for a flat ribbon cable that requires very little wiring work.

Furthermore, the purpose of this invention is to connect all of the multiple conductors of a flat ribbon cable at the same time with one touch by using a simple dedicated crimping tool without performing any work. The object of the present invention is to provide a connector that can be connected by crimp.

Another object of the present invention is to provide a connector, a method for connecting the connector, and a simple crimping tool for use in the same, which can greatly reduce the number of connection steps.

The object of the present invention is to provide a high-density, compact, through connector as described above.

The foregoing objects and other advantages of this invention will be more clearly explained in the following description.

Preferred embodiments of the connector of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a flat ribbon cape A-A that can be used in the connector of the present invention. In the sheet 1 of fusible electrical insulation of the flat ribbon cape kA, a plurality of signal conductors B are laid out parallel to the longitudinal axis of the cable AO and at predetermined intervals from each other. An embodiment of a connector 1o according to the invention for connecting a flat ribbon cable having such a signal conductor 8 to a circuit board is shown in FIG.

FIG. 3 is an exploded view of a preferred embodiment of the connector IO of the present invention, partially cut away and shown in cross section to clearly illustrate the structure of the connector IO.

The connector 10 includes a base 11 made of an insulator and a cable base 12.
and a cover 13. Insulator base 11
accommodates a socket contact 14 that contacts each end of a plurality of conductors S placed in the seam B of the flat ribbon cable.

As shown in FIG. 4, the contact 14 is made of a metal plate and has two legs 15 for inserting pins of a conductive element such as a circuit board (not shown in the drawing) and a contact 14. 14 on the connector 100 base 11,
It is provided with a shoulder portion 17 having an overhang portion 1et- projecting outwardly from the leg portion 15, and a connecting portion 18 extending upright from the shoulder portion 17. Contact) 1412) It is preferable to provide two openings 19, 20, upper and lower, for upright connections. These openings 19 and 20 are connected to a wire connection member 21 for crimping.
Installation determines the location.

The crimping connection member 21 is made of a thin metal plate, and as shown in FIG.
It is fixed to either the upper opening 19 or the lower opening 200 of the connection part 18 of No. 4. The directions of the U-shaped openings jIII of the connection member 21 fixed at the upper position and the connection member 21 fixed at the lower position K111 are opposite to each other.

Further, the opposing open end sides of the U-shaped wiring member 210, that is, both arm portions 22 and 23 extend from the upper and lower edges of the wiring member 21, respectively, as clearly shown in FIG. As will be described later, when the arm portions 22 and 23 are bent inward to embrace the exposed portion of the conductor 8 of the ribbon cable A, the arm portions 22 and 23 do not come into contact with each other. The width of the connecting member 21 is approximately the width of a hand. Further, the ends of both arm portions 22 and 23 are wide-open toward the outside.

The base 11 made of an insulator of the connector of the present invention has side edges 3 that protrude from the top surface 30 of the base 11 along both sides of the base 11.
1 and accommodating the legs 15 of the contact 14, a plurality of compartments opening at the upper surface 30 and the lower surface i of the base 11 are arranged along the longitudinal central axis 11 of the base 11. They are arranged in two rows. As shown in the 6th wJK, the distance in the first column is 113
2 and the compartments 33 of the second row are arranged in a row, and the side edge 31 between the adjacent compartments 1 [32 and 32 and the walls 33 and 33 of each row is aligned with the upper surface of the base 11. ) Cut depth W with 0 as the bottom surface
2B5 is provided. The contact 14 has its leg 15
Base 11<D first row compartment 32 and second row compartment 3
Insert into 3. In this case, the contacts 14 inserted in the first row shall have their wiring members 21 located at the top, and the contacts 14 inserted in the second row shall have their wiring members 21 located at the bottom, Furthermore, the contacts in the first row and the second row are arranged to face each other so that the connection portion 18 coincides with the central axis of the base 110 in the lateral direction.

By doing this, the positions of the connection members 21 of the contacts 14 arranged in the compartments 32 of the first row are aligned in the upper position, and the positions of the wiring members 21 of the contacts 14 arranged in the compartments 33 of the second row are aligned in the upper position.
The position of the connection IIs material 21 in No. 4 is the lower opening 2 of the connection part 148.
The arms 22 and 23 of the connecting members 21 of the first and second rows of contacts 14 are aligned at the 0 position and are on the same side.

As described above, the contact 14 is placed on the base 110 in the compartment 3.
2 or 33, the contact legs 15 can clamp a vial of conductive element (not shown) inserted into an opening in the underside of the base 11. The shoulder portion 17 of the contact 14 is placed on the upper surface 30 of the base 11 which is in contact with the compartment 32 or 33KIII, and the sideward projecting portion 16 of the contact 14 is placed on the cut groove 34 of the side edge 31 of the base 11. is fitted in.

As described above, the conductor S of the flat ribbon cable is connected to the base 11 on which the contacts 14 are mounted.

Next, 1, the connection method will be explained. First, as shown in FIG. 1, at the part C where the end of the flat ribbon cable to be connected to the contact 14 is left a desired portion apart from the leading edge, insert the insulating sheet BK of the cable. Add incision. It is pulled out in the longitudinal direction by a desired distance E from the cut portion C on the end side Dt. Then, as shown in Figure 1, the conductors 8 buried in the sheet 3 are exposed by a distance E, and the final end 0 portion of these conductors S remains on the end side DK of the cable A's sea) B. . Therefore, the exposed portions of the conductors S] can maintain the mutual spacing as they are buried in the sheet 3 of C Company Cablem.

The exposed portion E of the cable conductor 8 prepared in this manner is inserted between the open arm portions 22 and 23 of the U-shaped crimping connection member 21 of the contact 14 attached to the base 11. do. Then, the end E of the cable end will be placed on the top surface 30 of the base 11 (Fig. 11).
.

Therefore, the contacts into which the exposed portion E of the conductor S has been inserted are bent inward, and the exposed portion E of the conductor 8 is crimped to the contact (14), and unnecessary and unnecessary wires extending downward from the wired portion are connected. Cut the conductor S part.

The holding tool 4 shown in FIG. 9 is used to connect and cut the conductor S.
0 and the crimp cutter X45 shown in FIG.

As shown in FIG. 9, the holding tool 40 is a block member made of metal or an extremely hard material, and the lower surface of the holding tool 4o is raised against the upper surface of the side edge 31 of the base 110 of the connector. , U fixed to the connection part 18 of the contact 14
The upper surface of the holding tool 4o has a thickness that matches at least the upper edge of the upper crimping wire connection member 21 fixed to the contact 14 when the holding tool 4o reaches the closed end side of the letter-shaped wire connection member 21. One am of this holding tool 4o, that is, the front edge of the insertion side, is attached to the pinch of the plurality of conductors S of the ribbon cable, which eventually coincides with the pinch of the fastening part 18 of the contact 14 arranged on the base 11. In a pinch, comb-shaped cut grooves 41 are provided. The depth of the cut length 41 is the groove 41t.
- When applied to the closed end side of the U-shaped wire connection member 21 fixed to the wire connection portion 18 of the contact 14, the groove 41 serves as a back end of the wire connection member 21, and the wire connection member 21 opens in a widening shape. The depth is such that the arm portions 22, 23 are freely protruding.

As shown in No. 111 IK, the crimp cutting tool 45 is inserted into the connector base lIK from the side opposite to the holding tool 40, and is fixed at the positions of the upper opening 19 and the lower opening 20 of the wiring part 18 of the contact 14. In cooperation with the holding tool 4o, press the exposed good conductor B of the inserted cable between the arm parts 22 and 23+lDI%eK of the crimping connection member 21 held by both arm parts 22 and 23 in cooperation with the holding tool 4o. The exposed portion E of the exposed conductor S is crimped onto the wire connecting member 21, and the unnecessary portion extending downward from the connecting member 21 of the exposed conductor S is cut off.

In order to achieve the above object, the crimp cutting tool 45 is made of metal or hard material and consists of two round upper and lower blocks 46.
47, an upper conductor cutting knife 4B movably mounted between the upper block 46 and the lower block 47, and a lower conductor cutting knife 49 movably mounted below the lower block 470 (No. Figure 10).

The front end edge of the upper block 46 has arm portions 22 and 231 to which the crimping connection member 21 fixed at the upper opening 19 of the connection portion 18 of the contact 14 opens, and a guide groove for folding the connection member 21 inwardly into each other. 50 is the standard. Further, a line is provided at the front end edge of the lower block 47, and a guide groove is provided for inwardly folding the open arm portion 22.2B of the crimping connection member 21 fixed to the lower opening 20 of the connection portion 18 of the contact 14. 51 is provided.

Knife for cutting upper conductor 48 companies contact 14 knot 1111
Wiring member 2 fixed at the position of the upper opening 19 of 1118
10, only the conductor S that is clamped at both arm portions 22 and 23 and extends further downward is cut. On the other hand, the lower conductor cutting blade 49 may have a single blade. Note that the cutting edge 52 of the upper conductor cutting blade 48 and the cutting edge of the lower cutting blade 49 are both connected to the upper and lower blocks 46.
47, the guide grooves 50 and 51 are held in a retracted position, and can be moved to protrude toward the front end when cutting the conductor 12.

To operate the holding tool 40 and the crimping/cutting tool 45, the K can be electrically or mechanically operated by being incorporated into a suitable device for each of the above-mentioned nine-piece tubes. This can be achieved by design and is not the gist of this invention.

As can be easily understood from the above detailed explanation, in order to connect the conductor S of the flat ribbon cable to each of the contacts 14 of the connector 1o of the present invention, the insulation of the cable A is required as described above. Make a cut in the end of the sheet B to expose a part of the conductor S, and attach it to the base 11.
The connection Iss material 21 is held in the groove 41 of the arm portion 22° 40 of the upper connection member and the lower connection member 21, which are fixed adjacent to the connection portion 18 of the contact 14 disposed in the upper and lower connection members 21, and then crimped. Both the upper and lower blocks 46.47 of the cutting tool 45 are pressed against the direction of the holding tool 40 to open the guide groove 50.5.
1. Fold both arm portions 22 and 23 of the connecting member 21C1 sandwiched between the conductor st exposed by 1 inward,
The conductor C is crimped and connected to the wiring member 21 on the spot. At this point, the cutting blades 48 and 49 are pushed out toward the holding tool 40 to cut unnecessary portions of the connected conductors S extending downward from each connection member 21, and the holding tool 40 and the crimping cutting tool 45 are cut off. and remove. By cutting the conductor S as described above, the unnecessary portion thereof can be removed from the base 11 of the connector 10 together with the end portion of the insulating sheet.

After threading the conductor S of the flat ribbon cablem at 8% pressure on the connection member 21 of the contact 14 of the base 11 in this way, attach the cable base 12 and cover 13 to the base 11 and connect them.
Keep the portion.

In order to properly protect the base 11, the cable base 12, and the part connected to the contact 14 of the cable A by the cover 13, elastic arms are provided at both ends of the cover 13 in order to fix the cover 13t to the base 11. When the arm 55 is extended and a suitable opening 56 is provided at its free end side, and the cover 13 is attached to the base 11, a protrusion 57 that can fit into the opening 56 of the arm 55 is formed on both sides of the base 11. It is desirable to provide it at the end.

The connector of the present invention is capable of crimping and connecting multiple conductors of a cable to the through contacts described above with a simple operation. Since the conductors adjacent to the member and the lower connection member are connected by crimp, it is possible to securely and easily connect the conductors buried in a high density.

Although the preferred embodiments of the connector of the present invention have been described above, the present invention can be implemented with various changes in the constituent elements set forth in the claims.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing a flat ribbon cable otatmt used in connection with the connector of the present invention, and Fig. 2 shows the state after the assembly is completed after the cable is crimped and connected to an embodiment of the connector of the present invention. A perspective view, FIG. 3 is an assembled and disassembled perspective view with a part cut away to clearly show the internal structure of the connector, FIG. 4 is a perspective view of a contact, and FIG. 5 is a perspective view of a wiring member. , The sixth cause is a plan view showing a good condition with contacts arranged on a part of the base of the connector, Figure aI7 is a side view, and Figure wIB is the line ■-■ of Figure 7.
FIGS. 9 and 10 are perspective views of a holding tool and a crimp-cutting tool used to connect cable conductors to the connector of the present invention, and FIG. 11 shows an enlarged connector. 1 is a schematic diagram illustrating a method of crimping a cable conductor to a In the above drawings, the relationship between the symbols and the main parts is as follows. A... Flat ribbon cable B... Net C... Notch part D... End side S... Conductor 10... Connector 11... Base 12... Cable stand 13 ... Cover 14 ... Socket contact 15 ... Contact leg 18 ... Contact connection section 21 ... Connection member 22.23 ... Arm portion 30 ... Top surface of base 31 ... ... Side edges of the base 32, 33 ... Compartment 34 of the base ... Cutting groove 40 ... Holding tool 45 ... Crimping cutting tool

Claims (1)

[Claims] 1. A hook-tribbon cable connector in which a plurality of conductors are embedded parallel to each other in a foot of an insulator, wherein the connector has (1) a plurality of conductors separated from each other and buried in parallel; (2) a leg part to be installed in the compartment of the base and a joint protruding from the top surface of the base 0);
1it7, (3) a crimp-shaped crimping connection member attached to the crimping connection part of the contact; A connector for a flat ribbon cable, characterized in that the connector with a base KWlR comprises a cover that closes the connection portion of the conductor. 3. The connector according to claim 1, wherein the connector and the second row of compartments are arranged in an aligned relationship. 3. Two openings, upper and lower, are provided in the connection portion of the contact at intervals in the upright direction, and The connector according to claim 1, wherein the crimping connection member is fixed to either one of the openings.4. The connector according to item 1. 1. The open end of the U-shaped wiring member installed at the opening above the connection part of the contact and the open end of the wiring member installed at the lower opening position are aligned in the same direction. The directions of the open ends of the wiring members of the contacts and the open ends of the wiring members of the contacts attached to the compartments of the second row of the base were 6. A contact according to claim 2, in which the directions of the conductors are in the same direction. 6. A plurality of conductors are buried in parallel and separated from each other in an insulator (oV-). A flat ribbon cable connector comprising: (1) an insulating base having a plurality of compartments in a first row and a plurality of compartments in a second row; , (2) a contact having a leg part to be installed in the compartment of the base and a wiring part that protrudes from the top surface of the base and has two openings (upper and lower); (3) an opening position above the wiring part; A contact to which a U-shaped wiring member is fixed is attached to a compartment in the first row of the base, and the open end is opposite to the U-shaped wiring member in the upper opening position at the lower opening position of the wiring part. Mount the fixed contacts in the second row of compartments of the base, and open the U-shaped wiring members of the first row of contacts and the U-shaped wiring members of the second row of contacts. (1) Make a notch in the sheet near one end of the cable, and pull out the sheet on the end side from the notched part. (-) exposing a part of the conductor buried in the sheet; inserting it between the open ends of the material; (・) pressing the open end of the U-shaped connection member to expose the exposed part of the conductor; (d) Cutting off unnecessary conductor portions on the end portions of the conductors (from the crimp joints); (@) After connecting the conductors to the contacts, attaching a cover to the base; A method of crimping a flat ribbon cable to a connector for a flat ribbon cable, comprising: attaching a flat ribbon cable to a connector for the flat ribbon cable.