JP3138918B2 - Thin pressure contact connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a thin connector to be connected to a flat ribbon cable (FRC).

[0002]

2. Description of the Related Art Conventionally, as a technique for connecting a core wire 17 of a flat ribbon cable 16 to a contact 18 of a connector, as shown in FIG. 7A, a wire connecting portion 14 of the contact 18 is slit (U-slot). 13 and a fork-shaped fork having
By pressing the wire 7, the electrical connection between the core wire 17 and the wire connection portion 14 is obtained. The electric wire connection portion 14 is made of an elastic metal, and the width of the slit 13 is made slightly smaller than the diameter of the core wire 17 to be pushed in, and the core wire 17 is pushed at right angles to the axial direction so as to be sandwiched by elastic force. Core 17
May be a bare wire or a covered wire. In the case of a covered wire, the entrance portion of the slit 13 or the edge of the slit 13 has an edge shape such that the covering is broken in the process of pushing the core wire 17.

FIG. 7B is a front view showing a state where the core wire 17 is pushed into the slit 13 (however, only one contact is shown as a representative). As shown in FIG. 7A, the lower portion of the wire connection portion 14 is bent in the same direction as the axial direction of the core wire 17 and continues to the contact portion of the contact 18. A plurality of such contacts 18 are held by insulating synthetic resin and arranged in plural.

[0004]

However, in the above-mentioned conventional structure, in order to obtain elasticity in the closing direction against the force of the core wire 17 being pushed into the slit 13 and being pushed open, the fork base portion 19 is required. Some size is absolutely necessary. For this reason, there is a problem that there is a restriction in making the connector thin.

An object of the present invention is to provide a connector which is thinner than a conventional connector by bending an electric wire connection portion at a slit portion so as to continue to a contact body in view of the above-mentioned problems of the prior art. And

[0006]

SUMMARY OF THE INVENTION The present invention is directed to the above-mentioned object.
To achieve this, the following means configuration is adopted. Ma
First, the first configuration, which is the basic configurationIs  (B) The connecting part with the cable is a forked fork
The part is bent upward or downward.
By sandwiching the cable between the two pieces of the
Contact that is a pressure contact piece to obtain pressure contact with the
When,  (B) The cable groove in which the cables are stored one by one
A plurality of cables are installed in parallel at a distance.
Push the bent part of the pressure contact piece into the cable
The press-contact piece groove that guides the cable housed in the groove
Provided cable alignment insulatorAnd
The contact is pressed into the groove
With the contact book along the cable alignment insulator
While connecting to the body part, align the cable
At the point away from the
Bend into the thickness dimension of the row insulator
With a thin pressure contact connector.
is there.

[0007]

[0008] The second configuration, or when the core wire of the FRC is large, as appropriate in the case of coaxial cables, the first configuration
Oite for forming, cable line insulator is a thin insulation displacement contacts connector, wherein each of the upper and lower surfaces and has a cable groove and pressing member groove.

The third configuration is such that when the core wire is a coaxial cable, the planar positions of the cable grooves and the press contact piece grooves on the upper and lower surfaces coincide with each other in the second configuration so as to improve cohesion. This is a characteristic thin pressure contact connector.

A fourth structure is a thin pressure contact connector in which the pressure contact grooves on the upper and lower surfaces are penetrated in the third structure, and a fifth structure is the fourth structure.
Wherein the press contact piece groove is provided at a plurality of positions with respect to the pair of cable grooves on the upper and lower surfaces.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, a plurality of contacts 10 having press-contact pieces 11 shown in FIG. Then, a cable alignment insulator 1 provided with a cable groove 2 and a press contact piece groove 4 as shown in FIG. 4 in a synthetic resin is manufactured, and a cable to be connected to the cable groove 2 of the cable alignment insulator 1 as shown in FIG. The basic structure is that the electrical connection between the contact 10 and the cable 15 can be obtained by inserting the cable 15 into the press-contact groove 4 so that the cable 15 is sandwiched between the slits 13 by the press-contact piece 11 of the electric wire connection portion 14 of the contact 10. is there.

By adopting such a structure, the basic elements of the thickness dimension of the connector are the thickness of the cable alignment insulator 1 and the thickness of the electric wire connection portion 14 of the contact 10, and are very thin. Can be realized. In the above description, one cable groove 2 and one press contact piece groove 4 are shown on the upper surface side of the cable alignment insulator 1, but in the case of connection with a flat ribbon cable, the cable groove is adjusted according to the number of core wires. 2 are provided in parallel. In some cases, the cable groove 2 and the press-contact piece groove 4 may be provided on both upper and lower surfaces of the cable alignment insulator 1 so that connection with the cable can be performed on both upper and lower surfaces. This applies to the case where the flat ribbon cable is a coaxial cable and the center conductor and the outer conductor are separately connected to the upper and lower surfaces.

[0013] Thus, the cable alignment insulator 1
When providing the cable groove on each of the upper and lower surfaces of the upper and lower sides, it is possible to freely select whether the position is the same on the upper side and the lower side, or whether the lower cable groove is located between the upper cable grooves, In the case of the center conductor and the outer conductor of a coaxial cable, it is preferable that the positions of the upper and lower cable grooves coincide, and when connecting a relatively large number of single wires, the cable groove on the upper surface side is preferable. If the cable grooves on the lower side and the cable grooves on the lower side are shifted by one pitch of the flat ribbon cable, the thickness of the cable alignment insulator does not need to be increased.

In the case where the cable grooves on the upper surface side and the cable grooves on the lower surface side are provided so as to coincide with each other, the press contact piece grooves provided therein can be provided so as to penetrate vertically. Thereby, the number of groove machining steps can be reduced as compared with the case where the press contact piece grooves are provided at different positions in the vertical direction. Furthermore, by disposing such a plurality of press-contacting grooves in the axial direction and disposing them at a plurality of positions, the position where the pressure-contacting pieces are pushed in can be shifted up and down, and the adjacent grooves can be alternately changed. It becomes easier to obtain an alignment balance.

FIG. 6 is a view showing a state in which the cable 15 is placed in the cable alignment insulator 1 having a cable groove on the upper surface, and the pressure contact piece 11 is pushed into the pressure contact piece groove 4 from above and connected to the cable 15. The hatched portion in the figure indicates the contact 1
Insulating resin 12 holding and fixing a plurality of O's in a direction perpendicular to the paper surface. In this figure, the contact 10 extends rightward along the cable alignment insulator 1 from the press-contact piece portion, and the axis of the contact 10 is separated from the cable alignment insulator 1 by the axis of the contact 10.
And then again extends to the right contact area. By shifting the axis of the contact 10 into the thickness dimension of the cable alignment insulator 1 in this manner, the insulating resin 1 having a sufficiently thick thickness at this portion is obtained.
2, the contact 10 can be held and fixed, so that it is not necessary to increase the thickness of the insulating resin 12 at the portion where the contact 10 is along the cable alignment insulator 1, and it is possible to contribute to the reduction in thickness of the connector.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a thin pressure contact connector according to an embodiment of the present invention. FIG. 1 shows a coaxial flat ribbon cable 5 connected to the connector of the present invention, in which a coated center conductor 6 of a coaxial cable and a drain wire 7 which is a conductive lead of an outer conductor are connected to both upper and lower surfaces of a cable alignment insulator 1. FIG. 4 is a view showing a state in which the cables are accommodated in cable grooves 2 and 3 of FIG. The cable groove 2 on the near side of the upper surface is a cable groove for the center conductor, and since the center conductor 6 is still covered with the coating, the groove is large and large. The cable groove 3 on the lower surface is a cable groove for a drain wire, and the axial position of the groove matches the axial position of the cable groove 2 on the upper surface. However, since the drain wire 7 is a bare wire and is thinner than the covered central conductor 6, The cable groove 3 is also narrow.
The press contact groove 4 is a pair of cable grooves 2 and 3 on the upper surface and the lower surface.
Are provided at two places apart from each other in the axial direction, and these penetrate vertically. The cable groove in the next row is turned upside down with respect to the cable groove on the near side, and a cable groove 3 for a drain wire is provided on the upper surface, and a cable groove 2 for a central conductor is provided on a lower surface.

Further, the adjacent portion is turned upside down again, and a cable groove 2 for a central conductor is provided on the upper surface and a cable groove 3 for a drain wire is provided on the lower surface, similarly to the front side.
The press contact piece grooves 4 are provided so as to be aligned in the axial direction. FIG. 1 is a view showing a state in which the center conductor 6 and the drain wire 7 are fitted (fitted) into each of the cable grooves provided as described above.

In this state, the pressure contact piece of the contact is inserted into each pressure contact piece groove 4. For example, the center conductor 6 in the first row on the near side
Is inserted from above into the press-contact piece groove 4 on the right side (closer to the conductor tip), and the corresponding lower drain line is inserted from below into the press-contact piece groove 4 near the flat cable. . In the second row, since the drain wire 7 is on the upper side, the press contact piece for this is inserted from above into the press contact piece groove 4 near the flat cable, and the right side (closer to the tip of the conductor) of the lower central conductor 6 is pressed. It is inserted into the one groove 4 from below.
The third column is the same as the first column, and is alternately repeated thereafter.

FIGS. 2A and 2B are side views showing the positional relationship between the pressure contact pieces of the contacts and the cable position of the second row in the second and third rows of FIG. 1. FIG. (B) shows a state where the pressure contact piece is inserted. A plurality of contacts 10 are arranged and fixed and held by an insulating resin 12. 2A, the right one of the upper pressure contact pieces 11 and the left one of the lower pressure contact pieces 11 are:
This is for the center conductor and the drain line, which are one row behind the center conductor 6 and the drain line 7 shown in the figure.

Thus, the cable alignment insulator 1
The arrangement of the center conductor 6 and the drain wire 7 is alternately switched up and down for each column. Therefore, when the pressure contact piece from the upper side is close to the coaxial flat ribbon cable 5, and when the pressure contact piece from the lower side is the coaxial flat ribbon cable, The near case and the close case alternate for each column. When the pressure contact piece 11 is inserted into the pressure contact groove 4, the connection between the cable and the contact 10 can be achieved as shown in FIG. Further, a multi-core connector can be formed by stacking the connectors having the structure shown in FIG.

[0021]

As described above, in the press contact connector of the present invention, the fork-shaped forward end of the wire connection portion of the contact is bent upward or downward, and the two bent portions (pressure contact pieces) are used. Prepare a cable alignment insulator that has a structure that sandwiches the cable and has a cable groove and a pressure contact groove so as to be perpendicular to the cable groove. Since the electrical connection can be obtained, there is an advantage that the portion close to the bottom of the slit and the base of the fork just in the prior art can be laid down along the axial direction of the cable and can be made thin. Also, if the contact
With the contact piece pushed into the groove, press the cable alignment
On the way to the contact body along the insulator
At a location away from the cable alignment insulator
And the axis of the contact is the thickness of the cable insulator
The connector is bent so that it can move into the dimensions.
There is an advantage that it can be made thin.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a center conductor and a drain wire of a coaxial flat ribbon cable are accommodated (fitted) in a cable groove of a cable alignment insulator of the connector of the present invention.

FIG. 2 is a side view showing the positional relationship between the pressure contact pieces of the contacts and the positional relationship between the cables in the second and third rows in FIG.

FIG. 3 is a perspective view showing a shape of a wire connection portion of a contact of the connector of the present invention.

FIG. 4 is a perspective view showing a basic form of a cable alignment insulator of the connector of the present invention.

5 is a perspective view showing a situation in which a cable is fitted into a cable groove of the cable alignment insulator of FIG. 4 and a press contact piece of the contact of FIG. 3 is inserted into the press contact groove;

FIG. 6 is a side cross-sectional view showing that it is easy to realize a reduction in thickness by shifting an axis of a contact to a thickness dimension of a cable alignment insulator.

FIG. 7 is a perspective view and a partial front view showing a conventional connection technique between a flat ribbon cable and a connector contact.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable alignment insulator 2 Cable groove 3 Cable groove 4 Pressure contact piece groove 5 Coaxial flat ribbon cable 6 Center conductor 7 Drain wire 8 Shield 9 Dielectric 10 Contact 11 Pressure contact piece 12 Insulating resin 13 Slit (U slot) 14 Electric wire connection part 15 Cable 16 Flat ribbon cable 17 Core wire 18 Contact 19 Fork base

Claims (5)

(57) [Claims] (1)(B) If the connection to the cable is
Oak-shaped structure with the upper part bent upward or downward
Then, sandwich the cable between the two pieces of this bent part
Is a pressure contact piece to obtain pressure contact with the cable.
ContactWhen,  (B) The cable groove in which the cables are stored one by one
A plurality of cables are installed in parallel at a distance.
Push the bent part of the pressure contact piece into the cable
The press-contact piece groove that guides the cable housed in the groove
Provided cable alignment insulatorAnd The contact is pressed into the groove
With the contact book along the cable alignment insulator
While connecting to the body part, align the cable
At the point away from the
Bend into the thickness dimension of the row insulator
A thin pressure contact connector. 2. The cable aligning insulator has both upper and lower parts.
Having a cable groove and a press-contact piece groove on each side
The thin pressure welding contour according to claim 1, wherein
Connector. 3. A cable groove and a press contact piece groove on both upper and lower surfaces.
3. The method according to claim 2, wherein the plane positions coincide with each other.
Thin pressure contact connector. 4. The pressure contact groove on both upper and lower surfaces is penetrated.
The thin pressure contact connector according to claim 3, characterized in that:
Ta. 5. The pressure contact groove is paired with a pair of upper and lower cable grooves.
5. A method according to claim 4, wherein said plurality of portions are provided.
The described thin pressure contact connector.