JP4729009B2 - Conductor wiring connection structure of connector - Google Patents

Description

  The present invention relates to a conductor wiring of a connector in which a plurality of connector terminals are arranged obliquely with respect to the conductor arrangement direction and connected to a conductor wiring body in which a plurality of conductors are arranged in parallel at a predetermined pitch in an insulating coating. The body connection structure.

  A conductor wiring body in which a plurality of conductors are arranged and fixed by insulating coating, among them, a flexible flat cable using a flat conductor (hereinafter simply abbreviated as a flat cable) is used as a wiring material in a room or in a vehicle. Utilizing excellent bending resistance, it is often used for connecting between relatively displaceable parts such as spiral cables, bent parts of notebook computers and mobile phones, or internal wiring of printers and copiers. Yes.

However, when the width of the flat cable is too wide, there is a disadvantage that a space for permitting deformation of the flat cable must be secured widely. Therefore, in order to limit the space, the pitch between the flat conductors is set narrow to reduce the width of the flat cable.

  By the way, a connector is generally used to connect components and wire harnesses in a device, but a connector is also used for wiring using a flat cable as described above.

In this case, the conductor of the flat cable and the connector terminal are electrically connected. However, in many cases , the number of standard terminals and standard dimensions are determined in the connector, so the pitch between the connectors is There is a situation that cannot be changed to match the flat cable. Therefore, when the pitch on the flat cable side is set narrow as described above, a special connection structure is required.

  Therefore, in recent years, in order to connect a connector to a flat cable terminal, a so-called pitch conversion technique for matching the pitch between conductors of a flat cable with the arrangement of connector terminals (pitch between connector terminals) is used.

For example, Patent Documents 1 and 2, arranged fan-shaped terminal radially between the narrow flat cable conductor width to the wide connector terminal width, by connecting to each other, is an implementation of the pitch conversion It is disclosed.

However, when using a fan-shaped terminal, the flat cable side of the terminal is connected in parallel with the flat cable, so if the conductor pitch of the flat cable is narrow, the insulation distance of the connection is shortened and high accuracy is achieved. If the conductors are not arranged on each other , there is a problem that the conductor of the flat cable and the adjacent terminal come close to each other , and it is difficult to ensure the insulation performance of the connection portion.

  Patent Documents 1 and 3 disclose one in which pitch conversion is realized by arranging connector terminals obliquely with respect to the arrangement direction of conductors of a flat cable. In Patent Documents 1 and 3, assuming that the angle formed by the longitudinal direction of the conductor and the arrangement direction of the connector terminals is θ and the pitch between the conductors is A, A / B = sin θ (where 0 ° <θ <90 ° Therefore, the pitch B between the connector terminals arranged obliquely can be made wider than the pitch A.

Japanese Utility Model Publication No. 4-42090 JP 59-143285 A Japanese Patent Laid-Open No. 2000-187452

However, in the connection structure disclosed in Patent Documents 1 and 3, in order to connector terminals are arranged in a row, the number of electrodes with an increase in the number of circuits to be connected, the number of Sunawa Chi connector terminal If it increases, there is a problem that the length of the row of connector terminals becomes long, leading to an increase in size of the connector.

Furthermore, in recent years, but that reduce the size of the connector by arranging a plurality of connector terminals to two or more rows are widely used, the connection structure disclosed in the above Patent Documents 1 and 3 are merely a flat cable Since one row of connector terminals arranged on the same plane is assumed, there is a problem that the configuration as it is cannot cope with connection with two or more rows of connector terminals.

  The present invention can easily connect to a plurality of connector terminals of two or more rows while ensuring a wide pitch between the connector terminals, and further in order corresponding to each of the conductors. It is an object of the present invention to provide a conductor wiring body connection structure of a connector that can connect connector terminals and can easily cope with a change in the number of connector terminals.

In the conductor wiring body connection structure of the connector according to the present invention, the plurality of connector terminals are arranged obliquely with respect to the arrangement direction of the conductors with respect to the conductor wiring body in which the plurality of conductors are arranged in parallel at a predetermined pitch in the insulating coating. In the conductor wiring body connection structure of the connected connectors, the plurality of connector terminals are arranged in at least two rows on the surface of the conductor wiring body, and one end of each connector terminal is connected to the conductor wiring body side. The other end of each connector terminal that is electrically connected to the conductor and is brought into contact with the mating connector terminal of the connector is disposed so as to be erected with respect to the surface of the conductor wiring body, one end of the connector terminals, are placed on the surface of the conductor wiring body, the connector terminal is bent is between the one end and the other end, said other end is substantially upright with respect to one end, the Same as the other end of the connector terminal The second inter-column pitch between the connection points of the conductor and one end of the connector terminal is the conductor from the other end of the connector terminal of each column in a state where the first inter-column pitch between the conductors is constant. One end of the connector terminal extends so as to straddle the plurality of conductors so that it can be increased or decreased under the same number of conditions, and the connection point between the conductor wiring body and the connector terminal is between the second rows. When the pitch is C, the following formula is satisfied.
C = A × N / 2 cos θ
However,
A: Pitch between conductors of the conductor wiring body N: Number of the connector terminals θ: An angle formed by the longitudinal direction of the conductors and the arrangement direction of the connector terminals.

  In one embodiment of the present invention, in the connection portion of the connector terminal with the conductor, a protrusion protruding toward the conductor is formed, and the protrusion and the conductor wiring body are in contact with each other, The connector terminal is removed at a portion where the insulating coating is removed while the protruding portion and the conductor wiring body are in contact with each other while the insulating coating contacting the protruding portion is removed by heating the connector terminal. And the conductor are connected.

  In one embodiment of the present invention, the protrusion extends so as to straddle the plurality of conductors.

According to this invention, by arranging the row of connector terminals obliquely with respect to the conductor arrangement direction, even with connector terminals having a connector terminal interval with a pitch wider than the pitch of the conductors, the conductor and the connector Terminals can be connected. Furthermore, this pitch can be converted into an appropriate value considering the number of standard terminals and standard dimensions of the connector.
Furthermore, since the plurality of connector terminals are arranged in a plurality of rows on the surface of the conductor wiring body, and the other end of the connector terminal is erected from the surface of the conductor wiring body, the other end is connected to the other connector terminal. This standard number of terminals of the connector as a contact portion for contacting a, and may be a plurality of rows arranged according to standard dimensions, thereby easily correspond to a connection with the connector terminals of the conductor wiring body and a plurality of columns arranged can do.
Further, by setting the second inter-column pitch C based on the relationship of C = A × N / 2 cos θ, there is an unconnected conductor, or a plurality of connection points are formed on one conductor. Therefore, the connector terminals can be connected in order corresponding to the respective conductors.
Furthermore, by extending one end of the connector terminal so as to straddle a plurality of conductors, the connector terminal can be simply shifted along the one end without changing the overall configuration of the connector. It is possible to easily cope with a change in the number of

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing a flat cable connection structure of a connector according to an embodiment of the present invention, FIG. 2 is a sectional view of a plane perpendicular to the longitudinal direction of the flat cable, and FIG. 3 is a structure of the connector. FIG.

1 to the embodiment shown in Figure 3, as shown in FIG. 1, the conductor 11, 11 a plurality (here twenty is), ... with respect to the flat cable 1 as a conductor wiring body which is parallel electrical connection The connector 2 as a member is disposed obliquely, and the same number of connector terminals 21, 21,... As the conductor 11 are arranged in two rows obliquely with respect to the arrangement direction of the conductors 11.

Flat cable 1 is on the pitch between conductors was set to A, a plurality of conductors 11, 11 arranged parallel to, ... a as shown in FIG. 2, a band-like cable and encapsulated with an insulating coating 12.

  As shown in FIGS. 1 and 3, the connector 2 has a plurality of connector terminals 21, 21,..., With one end side set as a connection portion 21 a and the other end side set as a contact portion 21 b, and an array of connector terminals 21. It is comprised from the housing | casing 22 for fixing.

  As shown in FIG. 1, half of the connector terminals 21 are arranged in parallel on the surface of the flat cable 1, and all connection portions 21 a extending in parallel with the surface of the flat cable 1 are arranged on the surface of the flat cable 1. It is supposed to be placed on.

  The connector terminals 21 are connected to different conductors 11 at connection points P1 indicated by ◯ in the drawing at the connection portion 21a.

Specifically, in FIG. 1, when the conductor 11 located at the right end is the first one, the connector terminals 21 are sequentially shifted from the right end as shown in FIG. 1 in order of the first, second,. A first row is formed by connector terminals 21, 21,... Connected to the conductor 11 and connected to the first to tenth terminals.

  In the position shifted to the left from this row, the remaining connector terminals 21, 21,... Are connected to the 11th to 20th conductors 11, 11,. The second column is configured.

Further, as shown in FIG. 3, each connector terminal 21, 21,... Is formed in a substantially L shape in a side view, and the contact portion 21 b is erected with respect to the surface of the flat cable 1. It is arranged. The connector terminals 21 facing each other between the two rows are arranged so as to be symmetrical with each other, whereby the contact portions 21b are approached at a predetermined pitch H (first pitch between rows) . On the other hand, the connection portion 21 a is arranged so as to spread in the opposite direction toward the outside of the connector 2.

  Here, the contact portion 21b is a contact portion for making contact with a mating female connector terminal (not shown) of the connector 2, and the pitch of the contact portion 21b, that is, the pitch of the connector terminal 21 is set in advance in the connector 2. It is inevitably determined by the determined number of standard terminals and standard dimensions.

In the present embodiment, the connector terminals having a connector terminal interval having a pitch wider than the pitch A (inter-conductor pitch) of the conductors 11 by arranging the rows of the connector terminals 21 obliquely with respect to the arrangement direction of the conductors 11. 21, when the angle formed by the longitudinal direction of the conductor 11 and the arrangement direction of the connector terminals 21 is θ (where 0 ° <θ <90 °), B = A / sin θ 21 can be connected. Further, the pitch B can be converted into an appropriate value in consideration of the number of standard terminals of the connector 2 and standard dimensions. For example, when the pitch A between the conductors 11 is 0.5 (mm) and the angle θ is 13 °, the pitch B of the connector terminals 21 after conversion is about 2.2 (mm) due to the above equation.

Furthermore, in the present embodiment, the plurality of connector terminals 21 are arranged in two rows on the surface of the flat cable 1 and the other end of the connector terminal 21 is disposed so as to stand up from the surface of the flat cable 1. as the contact portion 21b at the other end, which standard number of connector terminals 2, and can be arranged in two rows in accordance with the standard dimensions, whereby the connection between the connector terminals 21 of the flat cable 1 and two rows It can be easily handled.

Here, the pitch H between the opposing pair of contact portions 21b (the first inter-row pitch), the standard number of terminals of the connector 2 as described above, is determined based on and standard dimensions.

In setting the position of the connection point P1 with the conductor 11 in the connection part 21a, the second inter-row pitch C1 (see FIG. 1) of the connection point P1 is constant. When the number of terminals 21 is N, the second inter-column pitch C1 is set based on the relationship C = A × N / 2 cos θ. Thus, the connector terminals are arranged in order corresponding to each of the conductors 11, 11,... Without the presence of the unconnected conductor 11 or the formation of a plurality of connection points P 1 on one conductor 11. 21 is connected.

4 (a) is X-X in sectional view taken along line in FIG. 3, on a bottom surface of the connecting portion 21a, forms a semicircular arc as shown in FIG. 3 and FIG. 4 (a) A protruding portion 21 c protruding from the conductor 11 is formed.

The protrusion 21c, as shown in FIG. 1, a plurality (here, three) together with the connection portion 21a extends so as to straddle the conductor 11 of, as shown in FIG. 4 (a), a portion of the insulating The portion from which the covering 12 is removed is welded to the conductor 11 to form a connection point P1 between the conductor 11 and the connector terminal 21.

  In FIG. 4A, the protruding portion 21c is partially formed in the center in the width direction of the bottom surface of the connection portion 21a. However, as shown in FIG. 4B, the width of the bottom surface of the connection portion 21a. The protrusion 21d may have a semicircular arc shape in the entire direction.

  Here, with reference to FIG. 5, FIG. 6, the formation process of the connection point P1 is demonstrated. In forming the connection point P1 in the present invention, a welding method by resistance welding as shown in FIG. 5 or a welding method by ultrasonic welding as shown in FIG. 6 is adopted.

In the welding method shown in FIG. 5, first by heating the electrodes 3 shown in FIG. 5 (a), which either pressed against the connector terminals 21 (connecting portions 21a), or, in the connector terminal 21 to flow the current, etc. Thus, the connector terminal 21 is heated while being in contact with the flat cable 1. And the heated connector terminal 21 is pressed against the flat cable 1, and the insulation coating 12 of the flat cable 1 is melted by the heat.

At this time, a semicircular arc-shaped protrusion 21c is formed on the surface of the connector terminal 21 that contacts the flat cable 1, so that the insulating coating 12 that contacts the connector terminal 21 melts , as shown in FIG. It is pushed out and removed.

Then, at the timing when the conductor 11 is exposed, the electrodes 3 and 4 are switched to supply a large current as shown in FIG. At the same time the contact surface between the 11 and the connector terminal 21 is heated by electric current, by adding further pressing force to the conductor 11 and the connector terminal 21 to the welding state. Thereby, the conductor 11 and the connector terminal 21 are connected, and the connection point P1 is formed.

On the other hand, in the welding method shown in FIG. 6, first, as shown in FIG. 6A , the welding horn 5 and the anvil 6 are heated by the heater 7 with the connector terminal 21 in contact with the flat cable 1. Press against the flat cable 1 and the connector terminal 21 respectively. At this time, the protrusions 21c formed in the connector terminal 21, the insulating coating 12 is extruded removed as shown in FIG.

When the conductor 11 and the connector terminal 21 come into contact with each other, an ultrasonic wave is immediately applied to the welding horn 5 while keeping the connector terminal 21 in contact with the flat cable 1, and the foreign matter on the metal interface is completely removed by the vibration friction. It removes and forms the connection point P1 of the conductor 11 and the connector terminal 21. FIG.

  In Patent Document 1, before entering the step of connecting the connector terminal to the flat cable, it is performed to remove the insulating coating of the portion corresponding to the connection point in advance. The method disclosed in Patent Document 1 is not limited to the two methods, and may be employed.

  However, in this case, there is a problem in that the manufacturing process of the flat cable 1 is complicated, and furthermore, since the connector terminal 21 must be accurately aligned with the flat cable 1, an expensive manufacturing facility is provided. There is a need.

Further, when the thus removed once the insulating coating, the flat cable 1 applications, Chi words, will be determined specifications of the connector to be connected, and the length to be removed, that different part number is generated by the specification how the removal There's a problem. That is , the increase in the product number causes a problem that the inventory management of the flat cable becomes complicated.

On the other hand, in the method shown in FIGS. 5 and 6, the insulating coating 12 that comes into contact with the protruding portion 21c is removed during the welding process, and welding is continued at the portion where the insulating coating 12 is removed. because you, without that prior removal of insulation 12 of flat cable 1, it is possible to perform the connection, thereby, it is possible to simplify the manufacture of flat cable 1. And the complexity mentioned above can be reduced also in terms of inventory management of the flat cable 1.

Incidentally, the connection portions 21a of the connector terminal 21, as described above, and extends so as to extend over the plurality of conductors 11, 11, ... to. Thus, even if the configuration of the entire connector 2 is not significantly changed, as shown in FIG. 7, the number N of connector terminals 21 can be increased by simply shifting the position of the connection point on the connector 2 side along the connection portion 21a. The change can be easily handled.

For example, when the number N of connector terminals 21 is 16, in FIG. 7, by setting the connection point P2 at the position indicated by Δ, the 16 connector terminals 21 are connected to the conductors 11, 11,. Can be connected.

In the case of FIG. 7, the position of the connection point P <b> 2 is shifted inward by one conductor as compared with the case where the number N of the connector terminals 21 is 20, and the connector terminal 21 is the second to 17th conductors 11, 11. ,…It is connected to the.

When the number N of connector terminals 21 is 12, in FIG. 7, by setting the connection point P3 at the position indicated by x, the twelve connector terminals 21 are sequentially connected to the conductors 11, 11,. Can be connected.

In the illustrated case, the position of the connection point P3 is shifted inward by two conductors compared to the case where the number N of connector terminals 21 is 20, and the connector terminal 21 is connected to the third to fourteenth conductors 11, 11, …It is connected to the.

Here, as in the case of the connection point P1, the positions of the connection points P2 and P3 are set based on the above-described relationship of C = A × N / 2 cos θ, and the pitch C (second (2nd) By setting the inter-column pitch , a plurality of connector terminals 21 can be connected to the conductors 11, 11,... In order without forming a plurality of connection points P2, P3 on one conductor 11.

For example, when the number N of connector terminals 21 is 20, the conductor pitch A is 0.5 (mm), and the angle θ is 13 °, the second inter-column pitch C1 is about 5.5 due to the relationship of the above equation. If the number N of connector terminals 21 is 16 and 12, while the inter-conductor pitch A is 0.5 (mm), the second inter-column pitch is C2 and C3, respectively . The inter-column pitch C2 is about 4.1 (mm), and the second inter-column pitch C3 is about 3.1 (mm).

Moreover, even if the pitch A between the conductors on the flat cable 1 side is changed by setting the second pitch C between the rows based on the above formula, it is connected to an appropriate position corresponding to this. A point can be set.

  Further, in the connecting portion 21a, the protruding portion 21c is formed so as to straddle the plurality of conductors 11, 11,... Together with the connecting portion 21a, which is a case where the number N of the connector terminals 21 is changed. Even if it exists, in a welding process, it can respond easily only by changing a welding point according to the change.

In the present embodiment, as described above, a plurality of conductors 11, 11 in consideration of a case where there is a change in the number N of the connector terminals 21, but to form the projections 21c across ..., Figure 5 If only considering that it corresponds to the welding method as shown in FIG. 6, only the portion corresponding to the connection point P <b> 1 may be a protrusion protruding in a dome shape.

Incidentally, in the flat cable 1 is also intended to various applications, the width of the conductor 11 in response to the circuit configuration and the like are not uniform, as shown in FIG. 8, a part of the conductor 51 is above the other Some are set wide. In the flat cable connection structure according to the present invention, the connection point P4 can be set in accordance with the width of the conductor 51 as shown in the figure even for the flat cable 50 in which the width of the conductor 51 varies as described above. The connection with the connector 60 in which the connector terminals 61 are arranged in two rows becomes possible.

Further, in the above embodiments, the case arrayed connector terminals 21 and 61 of two rows, the present invention is not necessarily limited thereto. For example, even if two or more connector terminals are arranged in a plurality of rows and the connector terminals are arranged in three or more rows, they can be connected to a flat cable as in the case of the two-row arrangement.

In correspondence between the configuration of the present invention and the above-described embodiment,
The conductor wiring body of this invention corresponds to the flat cables 1 and 50,
Similarly,
One end of the connector terminal corresponds to the connection portion 21a,
The other end of the connector terminal corresponds to the contact portion 21b.
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The top view which shows the connection structure of the flat cable of the connector which concerns on embodiment of this invention. Sectional drawing of a surface perpendicular | vertical with respect to the longitudinal direction of a flat cable. The side view which shows the structure of a connector. (A) XX sectional view taken on the line in FIG. 3, (b) The figure which shows the modification of a projection part. Explanatory drawing which shows the welding procedure of resistance welding. Explanatory drawing which shows the welding procedure of ultrasonic welding. The top view which shows the other example of a connection at the time of connecting a connector terminal with respect to a flat cable. The top view which shows the other example of a connection at the time of connecting a connector terminal with respect to a flat cable.

1, 50 ... Flat cable (conductor wiring body)
2, 60 ... Connector 11, 51 ... Conductor 12 ... Insulation coating 21, 61 ... Connector terminal 21a ... Connection (one end of connector terminal)
21b: Contact portion (the other end of the connector terminal)
21c, 21d ... projection
C1, C2, C3 ... second inter-column pitch
H: Pitch between first rows

Claims (3)

A conductor wiring body connection structure for a connector in which a plurality of connector terminals are arranged obliquely with respect to the conductor arrangement direction and connected to a conductor wiring body in which a plurality of conductors are arranged in parallel at a predetermined pitch in an insulating coating. There,
The plurality of connector terminals are arranged in at least two rows on the surface of the conductor wiring body, and
One end of each connector terminal is electrically connected to the conductor on the conductor wiring body side,
The other end of each connector terminal for making contact with the other connector terminal of the connector is disposed so as to be erected with respect to the surface of the conductor wiring body,
One end of the connector terminal is placed on the surface of the conductor wiring body ,
The connector terminal is bent between one end and the other end, and the other end is substantially upright with respect to the one end.
With the first inter-column pitch between the other ends of the connector terminals being constant, the second inter-column pitch between the connection points of the conductor and one end of the connector terminal is the connector of each column. One end of the connector terminal extends across the plurality of conductors so that the number of conductors from the other end of the terminal can be increased or decreased under the same conditions,
A conductor wiring body connection structure of a connector that satisfies the following expression when the second inter-column pitch is C at a connection point between the conductor wiring body and the connector terminal.
C = A × N / 2 cos θ
However,
A: Pitch between conductors of the conductor wiring body N: Number of the connector terminals θ: An angle formed by the longitudinal direction of the conductors and the arrangement direction of the connector terminals. In the connection portion of the connector terminal with the conductor, a protrusion protruding to the conductor side is formed,
With the protrusion and the conductor wiring body in contact with each other, the insulating coating that contacts the protrusion is removed by heating the connector terminal, and the protrusion and the conductor wiring body are brought into contact with each other. 2. The conductor wiring body connection structure for a connector according to claim 1, wherein the connector terminal and the conductor are connected to each other at the portion where the insulating coating is removed in the state where the insulation coating is removed. The conductor wiring body connection structure for a connector according to claim 2, wherein the protrusion extends so as to straddle the plurality of conductors.

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