JP2767655B2 - Flat cable connector - Google Patents

Abstract

PURPOSE:To improve inserting and pulling out workability by suppressing the increase of inserting and pulling out force owing to multipolarization of a connector for a flat cable. CONSTITUTION:In connector for a flat cable composed of a plug connector 1, wherein a plurality of rows of plug contacts 2a to compose one end of plug terminals 2 are installed like a matrix, and a jack connector 15, wherein jack contacts 17a to be connected with the plug contacts 2a are located at one end of a jack terminal 17 and installed at the positions corresponding to respective plug contacts 2a, the jack connector 15 is composed of a plurality of the same sub-jack connectors 16 which are able to be inserted into and pulled out of independently each row of the plug contacts 2a installed in a plurality of rows like a matrix and have neighboring mutually combining means 18d, 19b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable connector, and more particularly to a flat cable connector having improved insertion / extraction operability by suppressing an increase in insertion / extraction force (hereinafter referred to as "insertion / extraction force") due to multipolarization. It relates to a connector (hereinafter referred to as a connector).

2. Description of the Related Art With the recent miniaturization and high performance of electronic devices, connectors for connecting devices via wiring members are also becoming multipolar. It is increasingly being used.

However, as the number of poles of a connector increases, the insertion / extraction force between a plug connector (hereinafter, referred to as a plug) and a jack connector (hereinafter, referred to as a jack) increases, and the workability of insertion / extraction becomes poor. I have.

[0004]

2. Description of the Related Art FIG. 4 is a principle diagram for explaining a configuration example of a conventional connector. In the drawings, an example of a connector including a plug mounted on a printed circuit board and a jack connected to a flat cable will be described.

In FIG. 4, a plug 1 has a plurality of plug terminals 2 having one end formed as a plug contact 2a and the other end perpendicular to the contact 2a as a straight external connection terminal 2b. The plug insulator 3 is implanted only in the orthogonal region so that the portion is arranged in parallel with a predetermined pitch in a matrix of two rows. Particularly, in this case, the arrangement of the contact 2a of the insulator 3 An inner surface 3a 'of the peripheral wall 3a surrounding the region is formed on a fitting surface for a jack described later.

A printed circuit board 4 on which the plug 1 is mounted
A through-hole 4a connected to the circuit pattern on the substrate 4 is formed in a position near the end side of the substrate 4 corresponding to each of the external connection terminals 2b.

Therefore, the external connection terminals 2b protruding from the side surface of the insulator 3 are connected to the above-described through holes 4a of the printed circuit board 4.
The plug 1 shown in FIG. 1 attached to the printed circuit board 4 can be obtained by connecting the two with a normal soldering technique after inserting the plug into the printed circuit board 4.

On the other hand, the jack 5 fitted and connected to the plug 1 is composed of a jack body 6 and two press-contact covers 9. When the plug contact 2a is inserted from the tip, the jack main body 6 is in contact with the contact 2a.
A plurality of external connection terminals 7b having a V-shaped notch at the end bent at the other end and having a jack contact 7a at one end capable of pressing the both sides to secure the connection. A straight jack terminal 7 and the jack terminal 7
And a jack insulator 8 that can be aligned at each position so that the contact 7a corresponds to the plug contact 2a of the plug terminal 2.

The jack insulator 8 has one side surrounded by a peripheral wall 8a having a height covering at least the length of the jack contact 6a and the other side formed with a partition wall 8b on a center line along the longitudinal direction. A plurality of through holes 8c into which the jack terminal 7 can be inserted from the external connection terminal 7b side are drilled at a predetermined pitch p in a root portion of both sides of the partition wall 8b. It is equal to the pitch p ′ between adjacent signal lines 11 of the flat cable 10 connected to the main body 6.

The outer surface 8a 'of the peripheral wall 8a is connected to the plug 1
It is the mating surface. Therefore, the jack terminal 7 in the straight state before the external connection terminal 7b is bent in the thickness direction is pressed into the through hole 8c from the terminal 7b side and fixed, and then the terminal 7b is bent in the thickness direction. The jack body 6 shown can be obtained by raising it.

The jack terminal 7 and the insulator 8 are provided, for example, with a projection protruding in the thickness direction near a straight portion of a region where the jack terminal 7 is separated from the jack contact 7a, and the projection is pressed into the through hole 8c. By doing so, the jack terminal 7 can be easily fixed to the insulator 8.

Next, the flat cable 10 described above is set as shown by the arrow a on each of the external connection terminals 7b exposed on both surfaces of the partition 8b of the insulator 8, and then the two press-contact covers 9 are mounted as shown by the arrow b. When pressed, the inner surface 9a of each press-contact cover 9 sandwiches the flat cable 10, so that the external connection terminal 7b having a V-shaped cut of the jack terminal 7 breaks through the insulating film of the flat cable 10 and is embedded in each signal line. 11 will be connected.

Therefore, the jack 5 connected to the two flat cables 10 is inserted into the plug 1 by inserting the jack 5 into the plug 1 such that the outer surface 8a 'of the peripheral wall 8a matches the inner surface 3a' of the peripheral wall 3a of the plug 1. Connection with the jack 5 can be realized.

In the connector having such a configuration, the connection between a plurality of terminals can be realized by a collective operation, which is efficient.

[0015]

The conventional connector has a problem that the insertion / extraction force is increased as the number of terminals is increased, so that the insertion / extraction operability is deteriorated.

[0016]

SUMMARY OF THE INVENTION The above object is a plug connector which plug contacts are implanted in a plurality of rows, one
One end is an external connection terminal for flat cable and the other end is
A plurality of <br/> jack to jack contacts corresponding to the plug contacts are implanted in a row Sabuja'
Connector, and each of the sub jack connectors is
Position corresponding to the upper and lower surfaces of the insertion rear end of the plug connector
The projections and recesses are formed on the
At least one is inserted adjacently on the upper side or the lower side.
One of the protrusion and the recess formed on the jack connector
This is achieved by a flat cable connector that is configured to be fitted and positioned .

[0017]

When a plurality of plug terminals are divided into a plurality of blocks of the same number and the jack is divided so as to be connectable to each block, the insertion / extraction force can be divided and the deterioration of the insertion / extraction workability is suppressed. be able to.

In the present invention, a connector is constituted by a plurality of sub jack connectors having the same shape which can be combined with each other in the stacking direction and which can be inserted for each row of plug contacts, and one plug. Therefore , the insertion / extraction force of the connector is
From being divided by a number of sub jack connectors
It is possible to realize a connector that can maintain substantially constant insertion / extraction operability even when the number of connection terminals as the connector increases .

[0019]

FIG. 1 is a view for explaining the structure of a connector according to the present invention, FIG. 2 is a view showing a state at the time of connection, and FIG. 3 is a view showing another example of the structure.

FIG. 4 shows an example of a connector composed of a plug mounted on a printed circuit board and a jack connected to a flat cable as in FIG. 4, and therefore the same components as those in FIG. Is represented.

In FIG. 1, the plug 1 mounted on the printed circuit board 4 is the same as that described in FIG. 4, and the plug contacts 2a of the plurality of plug terminals 2 are arranged in two rows in a matrix. I have.

On the other hand, the jack 15 connected to the plug 1
Each of the rows of the plugs 1 is constituted by combining two sub-jack connectors (hereinafter simply referred to as sub-jacks) 16 which can be independently connected. Each sub-jack 16 has a plurality of jack terminals 17 and the terminals 17. Are arranged in a line, and a jack insulator 18 and a press-contact cover 19 are provided.

In this case, when the plug contact 2a is inserted from the distal end, the tongue branching into two branches is displaced in the width direction and presses the contact 2a from both sides thereof. One end is provided with a plate-shaped jack contact 17a for securing the connection with 2a, and the other end 17b _-1 protruding to one side in the width direction after being bent at a right angle to the thickness direction of the portion of the jack contact 17a at the other end. An external connection terminal 17b provided with a V-shaped notch 17b- ₂ from the protruding end is provided.

The jack terminal 17 is connected to its contact
The jack insulator 18 accommodated and fixed in the region 17a has a shape having step surfaces 18a and 18b in a side view, and the thickness t of the step surface 18a on the thick part side is the same as that of the plug 1 described above.
The gap between the inner surfaces 3a 'of the peripheral wall 3a' is slightly smaller than 1/2 of the gap T, and the thickness of the pressure contact cover 19 is exceeded on the back surface of the stepped surface 18b, that is, on one side of the rear end of the insulator surface.
Prismatic projections 18d projecting from the insulator sheet surface is formed in example no height.

A rectangular through hole 18c is provided inside the stepped surface 18a on the side of the thick portion so that the contact 17a of the jack terminal 17 can be accommodated with a slight margin at a position corresponding to the plug contact 2a so as to be parallel. But one side is the above step surface
It is formed in a line so as to be substantially flush with 18b.

When the jack terminal 17 is inserted into the rectangular through hole 18c from the contact side to a predetermined position, the side of the jack terminal 17 opposite to the notch 17b- ₂ of the external connection terminal 17b is the thin side. It is located close to the step surface 18b on the side.

The jack insulator 18 and the jack terminal 17 are provided with a projection 17c projecting outward in the width direction of the contact 17a area of the jack terminal 17 to press the inner wall surface of the square through hole 18c of the jack insulator 18. It is made to be fixed by doing.

Therefore, each square through-hole of the jack insulator 18
By pressing the jack terminal 17 into the contact 18a from the contact 17a side to a predetermined position as shown by the arrow A, a sub jack connector body in which the jack terminals 17 are arranged in a line can be obtained.

In this case, the jack insulator
The external connection terminal 17b is exposed on the step surface 18b on the thin side of 18
It is in the state where it was. Therefore, as described with reference to FIG.
Flat cable as shown by arrow B on the surface where 17b is exposed
Set 10 and the exposed surface of the flat cable 10
When the press cover 19 is pressed from the side as shown by arrow C,
The inner surface (upper surface in the figure) 19a of the cover 19 is a flat cable
Since 10 is sandwiched, V-shaped cut 17b of jack terminal 17
_-2The external connection terminal 17b with
Connected to each embedded signal line 11 through the edge coating
The flat case shown in (1-1) in the figure
Bull 10 can get connected sub jack 16
You.

In the pressing cover 19 in this case, a rectangular recess 19b into which the rectangular projection 18d can be fitted is formed at a position corresponding to the rectangular projection 18d of the jack insulator 18.

Therefore, the sub jack 16 connected to the flat cable 10 constructed in the above-described manner is first inserted into the plug 1 as shown by the arrow D, and then the sub jack 16 connected to the similarly constructed flat cable 10 is broken line E When the plug 1 is inserted into the plug contact portion on the other side of the plug 1 as shown by, the rectangular projection 18d on the jack insulator 18 and the rectangular recess 19b of the press-contact cover 19 are fitted together as shown by an arrow E 'shown by a broken line. , The state shown in FIG.

In particular, in this case, a required connector is constituted by inserting and connecting two sub jacks 16 to one plug 1 individually, so that the entire insertion / extraction force as a connector is divided into two. As a result, the insertion / extraction force of the connector can be reduced by half.

Further, the fitting of the square projection 18d and the square recess 19b (not shown in FIG. 2) defines the insertion direction and the insertion amount of each sub jack 16 at the same time. This has the effect of suppressing artificial defects.

In the above description, the connection with the flat cable 10 is made by pressure welding. However, the insulating film of the flat cable 10 is peeled off to expose the signal line 11, and then the connection is made by ordinary means such as soldering. You can also.

The connector 21 shown in FIG.
Is composed of one plug 22 and a jack 23 composed of four sub jacks 16. In this case, plug contacts (not shown) are arranged in four rows on the plug 22, so that the required connector 21 can be configured by connecting the sub jack 16 described in FIG. 1 for each row.

The connector 21 has an advantage that the insertion / extraction operation can be performed with a 1/4 insertion / extraction force. Therefore, when the number of connection terminals increases, the insertion / removal operability can be improved by increasing the number of plug contacts arranged by the same means.

[0037]

As described above, according to the present invention, the flat cable
It is possible to provide a flat cable connector that improves insertion operation by suppressing an increase in insertion / extraction force due to multipolarization as a connector without deteriorating cable connection workability .

In the description of the present invention, the case of a connector composed of a plug mounted on a printed circuit board and a jack connected to a flat cable is taken as an example, but a connector composed of a plug and a jack both connected to a flat cable may be used. An equivalent effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a connector according to the present invention.

FIG. 2 is a diagram showing a state at the time of connection.

FIG. 3 is a diagram showing another configuration example.

FIG. 4 is a principle view illustrating a configuration example of a conventional connector.

[Explanation of symbols]

1,22 Plug connector 2 Plug terminal 2a Plug contact 3 Plug insulator 3a 'Inner surface 4 Printed circuit board 10 Flat cable 11 Signal line 15,23 Jack connector 16 Sub jack connector 17 Jack terminal 17a Jack contact 17b External connection terminal 17b _-1 end Part 17b _-2 notch 17c protrusion 18 jack insulator 18a, 18b stepped surface 18c square through hole 18d square protrusion 19 press-fit cover 19a inner surface 19b square recess 21 flat cable connector

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 23/02-23/68

Claims (2)

(57) [Claims] Outside of claim 1. A plug connector plug contacts are implanted in a plurality of rows, for one end flat cable
And the other end corresponds to the plug contact
And a plurality of sub-Jack jack to jack contacts are implanted in a row, each sub jack connector pair on the plug connector
Protrusions and recesses at positions corresponding to the upper and lower surfaces
Is formed, adjacent at least one of the protrusion and recess at the upper or lower
Before formed on the sub jack connector to be inserted in contact
A flat cable connector characterized in that it can be positioned by fitting into one of the projection and the recess . 2. The method according to claim 1, wherein the plurality of sub-jack connectors are
It can be inserted into the plug connector in a state of being stacked below
2. The method according to claim 1, wherein
Connector for flat cable.