JPH0311813Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to penetrate a multi-core flat cable with a contact to capture the conductor and establish a connection.
The present invention relates to a so-called press-contact type connector, and particularly to a coupling mechanism between a connector base and a cover when a flat cable is sandwiched between the connector base and the cover to perform the above connection.

In general, a multicore flat cable made up of multiple parallel conductors covered with insulation is sandwiched between a connector base with many contacts upright, and a cover with many holes for receiving the contacts, and the cover is pressurized. The contact is inserted into the multi-core flat cable to catch the conductor and make the connection.In order to maintain the connection, a coupling mechanism between the connector base and the cover is provided to hold the flat cable. It is essential to maintain the condition.

As a conventional coupling mechanism in a flat cable connector, a locking mechanism is provided at both ends of the connector base and cover, and the locking mechanism is attached to the outside of both cable ears, as typified by, for example, Utility Model Application No. 39278/1983. A mechanism that connects the two is widely used.

However, in the mechanism for connecting the cover and the connector base at both ends of the connector (both cable ears) as described above, the covering force of the cable insulation coating,
Due to the thinness and flexibility of the cover and connector base, floating and warping are likely to occur at the center of the connector, especially at the center of the cover. As the number of cores in flat cables increases and the cable width becomes wider in recent years (as the cover and connector base inevitably become more elongated), this lifting and warping tends to become more prevalent.

Lifting and bowing are extremely harmful as they create play between the cover and the connector base, allowing up and down movement of the cables and conductors captured in the contacts.

Moreover, the occurrence of warpage or the like in the connector hinders the thinning of the cover and the connector base.

Therefore, the present invention solves these problems and provides a flat cable connector coupling mechanism that can effectively cope with the increase in the width of the flat cable (increase in the number of cores) and the elongation of the connector.

In order to solve the above problems, the present invention eliminates the general concept of combining the cover and the connector base at both ends of the flat cable (both ends of the connector), which has been commonly used in the past. The object of the present invention is to provide a coupling mechanism that achieves firm coupling between the two at any position on the intervening surface, and thus firmly clamps the cable without warping or floating.

The present invention will be explained in detail below based on the illustrated embodiments.

In FIGS. 1 to 5, reference numeral 1 indicates a rectangular base made of an insulating material constituting the connector, reference numeral 2 indicates a cover thereof, and reference numeral 3 indicates a multicore flat cable.

The connector base 1 has a large number of pressure contact type contacts 4 planted on the cable intervening surface, and the cover 2 has a large number of contact receiving holes 5 into which the tips of the pressure contact type contacts 4 are inserted. The contact receiving hole 5 and the contact 4 correspond to the conductor pitch of the flat cable 3. The contact 4 consists of a pair of contact pieces each having a sharp tip, and has a slot for press-fitting a conducting wire between the contact pieces. A multi-core flat cable 3 is sandwiched between the cover 2 and the connector base 1, the contact 4 is passed through the insulation coating of the cable 3, and the conductor 3a is caught in the conductor press-fitting slot of the contact 4 to complete the connection.

A plurality of connectors 6 are provided protruding from the flat cable intervening surface of the cover 2 constructed as described above. The connector 6 is integrally molded with the cover 2, and consists of an elastically displaceable flat leg piece 6a as shown in the figure, and has a hook-shaped claw 6b along the width of the plate at the tip.

On the other hand, the flat cable 3 is provided with a through hole 7 at a position corresponding to the connector 6, into which the connector 6 is inserted. The through hole 7 is within the sandwiched surface area of the flat cable sandwiched between the cover 2 and the connector base 1, and
and located between the rows of contacts of the connector base,
Install it through the conductor so that it breaks. Conventionally, in order to generally increase the density of contact by contact, the contacts in each row were arranged in a staggered manner, and the contacts in one row captured the conductor wires that were not drilled, and the contacts in the other row drilled through holes 7. Capture the conductor at the front end of the same hole. As a result of the above, the purpose of press-welding and coupling the cover and the connector base, which will be described later, can be achieved without impairing the high-density pressure-welding by the connector and without increasing the size of the connector.

Furthermore, a connector 6 is attached to the cable intervening surface of the cover 2.
A coupling hole 8 corresponding to the hole 8 is bored. The coupling hole 8 may be a through hole or a hole with a bottom as long as it opens to the cable intervening surface.

The connector 6 passes through the through hole 7 of the cable 3,
The tip thereof is inserted into the coupling hole 8 and engaged with the connector base 1.

Connect the connector 6 of the cover 2 to the connector base 1
A locking step 9 is formed on the inner wall of the coupling hole 8 in order to ensure engagement during insertion into the coupling hole 8 .

As a result, the connector 6 does not protrude out of the coupling hole 8, but firmly engages with the connector base 1 within the hole.

In order to guide the engagement, an inclined guide surface 10 is formed at the lower end of the locking step 9, that is, at the mouth edge of the coupling hole 8, and an inclined surface 6c formed at the top of the hook-shaped pawl 6b is connected to the inclined guide surface 10. While the entire connector 6 is slid on this surface and elastically displaced backward, the connector 6 is inserted into the connecting hole 8.
Push it in and engage the locking step 9 with elastic restoring force.

As a result of the above, the connector base 1 and cover 2 are firmly connected at several locations on the cable intervening surface, as shown in FIG. The coupling position can be freely set in the cable intervening area.

The flat cable connector can be arranged in a well-balanced manner in the longitudinal direction to accommodate wider cables.

As described above, the flat cable 3 is held between the connector base 1 and the cover 2, the contact 4 is passed through the cable 3, and the conductive wire 3a is captured to complete the connection.

In connection work, first, as shown in FIG. 2, the flat cable 3 is fitted into the connector 6 through its through hole 7. This fitting can be used for positioning the flat cable 3 for subsequent pressure welding.

Further, as shown in FIG. 4, when the connector 6 is inserted into the through hole 7 of the flat cable 3, the left and right sides of the connector 6 restrict the inner surface of the through hole 7 where the end surface of the conductor 3a is exposed. The conducting wire 3a functions as a strength member against cable tensile force. Therefore, the flat cable 3 can be subjected to pressure welding without causing unnecessary lateral displacement, and the connection after pressure welding can be maintained soundly.

That is, the connector 6 of the cover 2 passes through the through hole 7 of the cable 3 and is engaged with the coupling hole 8 of the connector base 1, so that the cover 2 and the base 1 are coupled simultaneously, and the three members 1, 2, It is possible to determine the relative position of 3.

As mentioned above, the conventional connector base 1 and cover 2
As the cable 3 becomes wider, the coupling mechanism causes warpage and lifting, especially in the center of the cover 2.
Thus, the present invention allows the cover 2 to be attached to the connector base 1 at the center of the flat cable 3 or any other cable intervening area.

According to the present invention, it is possible to effectively deal with the tendency for the multi-core flat cable 3 to become wider in the future, and to accurately solve the problems of warpage and floating. That is,
The central part of the cover 2 is held against the elastic restoring force of the cable 3, and the cable 3 is firmly held between the connector base 1 and the contact 4.
This has advantages such as maintaining stable and highly reliable connections. Further, in the present invention, a connector 6 is inserted into the through hole 7 of the flat cable 3 that cuts the conductor 3a, and the left and right side surfaces of the connector 6 restrict the inner surface of the through hole 7 where the end surface of the conductor is exposed. Therefore, the conducting wire 3a can effectively function as a strength member against the tensile force applied to the flat cable 3, so that the flat cable 3 can be properly crimped without causing unnecessary lateral displacement, and it is also possible to connection status can be maintained in good condition.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the flat cable connector showing the state before the flat cable is crimped, and Fig. 2 shows the state with the flat cable fitted to the cover before the flat cable is crimped. FIG. 3 is an exploded perspective view of the connector, FIG. 3 is a perspective view of the connector showing the completed state of pressure welding, FIG. 4 is an enlarged cross-sectional view showing the state in which the cover and the connector base are coupled, taken in longitudinal section at the connector 6, and FIG. It is an enlarged cross-sectional view of the same. 1...Connector board, 2...Cover, 3...Multicore flat cable, 4...Contact, 6...
Connector, 7...through hole, 8...coupling hole, 9...locking step.

Claims (1)

[Scope of utility model registration request] A flat cable connector in which a multi-core flat cable is held between a connector base and a cover, and contacts provided on the connector base are inserted into the multi-core flat cable to capture the conductor and establish an electrical connection. A plurality of connectors are made to protrude from the cable intervening surface of the cover, and a through hole is formed in the flat cable to cut the conductor wire corresponding to the connector, and a through hole is made to cut the conductor wire by the connector. the tip of the connector, which can be inserted into the through hole, into the coupling hole drilled in the cable intervening surface of the connector base to engage with the cover, and the cover and the connector base are coupled through the engagement. 1. A coupling mechanism for a flat cable connector, characterized in that the connector has a structure in which the inner surface of the through hole through which the conductor end surface is exposed is restricted on the left and right side surfaces of the connector.