JPH07176341A - Connector - Google Patents

Abstract

PURPOSE:To miniaturize a connector by connecting together printed boards matually different in their thicknesses. CONSTITUTION:Linear contacts 14 and 15 arrcuatedly set in a longitudinal direction without any slackness are provided on both ends of a plurality of elastic conducting wires 12 and the connecting terminals of printed boards reguired to be connected to each other are electrically bridged. Thus, it is possible to make it easier to place core wires of cables in connection by connecting together the printed boards having contact terminals of narrow interline pitches and different in their thicknesses and setting an interline pitch between a terminal side to which a cable is connected and the terminal side connected to the connector wider than that on a cable side in the case of by printed wiring method one side printed board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microminiature connector used for various electrical connections such as automobile wiring and electric equipment.

[0002]

2. Description of the Related Art With the development of electronics, the demand for connectors used for electrical connection is further increasing, and the connectors are becoming smaller, the pitch between lines is narrower, and the printed wiring board is thinner. Minimization of connecting devices to the board is also desired.

Conventional connectors for printed wiring boards have a standard pitch (line spacing: 2,45 mm) or a half pitch (line spacing: 1,225 mm).

[0004]

In order to miniaturize the conventional connector, it is necessary to reduce the distance between the lines to at least a half pitch or less, and to reduce the thickness of the connection-compatible board, which is a typical example of this thin board. There is a demand for a connector that can be attached to and detached from various film substrates.

An ordinary connector mainly serves as a connecting device for a cable for electrically connecting electronic devices,
If the distance between connector wires is less than half the pitch, it will be difficult to connect each electrode of the contact (contact electrode part) in the connector to each core wire of the cable, and moreover, to maintain the strength and electrical characteristics of the core wire of the cable as required. Has a limit in reducing the thickness of the core wire.

The present invention has been made in view of the above-mentioned problems, and therefore, the present invention can be applied to terminals of a printed wiring board having a very narrow line pitch,
It is an object of the present invention to provide a connector for easily connecting a cable having a core wire of a normal thickness and a connector adapted to a film substrate.

[0007]

The present invention solves the above-mentioned problems as follows. (a) By providing linear contacts, which are arcuately provided in the longitudinal direction without slack, at both ends of the elastic conductor, and electrically bridging the conductors that require connection.

(B) In the elastic conductive wire, a plurality of elastic conductive wires are arranged in parallel so that the concavo-convex directions of the arcuate portions of the linear contact in the elastic conductive wire are aligned, and substantially the central portion in the longitudinal direction of the arranged elastic conductive wire group. It is preferable to connect with an insulating synthetic resin material.

(C) With regard to the elastic conductive wire connecting the central portions, it is preferable that the tip ends of the linear contacts at both ends of the elastic conductive wire are connected in parallel with the elastic conductive wire with an insulating synthetic resin material.

(D) The elastic conductive wire connecting the central portions has two sets in which the central portions of a plurality of conductive wires having the same structure are connected, so that a pair of elastic conductive wires are arranged on the same plane and the overlapping surface is formed. It is preferable that the symmetry planes are formed so that the convex portions of the linear contacts of the same shape face each other and the insulating synthetic resin portions connecting the central portions are overlapped.

(E) With respect to the linear contacts which are arcuately provided without slack in the longitudinal direction, it is preferable that the shapes of the arcuate portions of the contacts are the same at both ends of the elastic conductor.

(F) With respect to the linear contacts which are arcuately provided in the longitudinal direction without slack, the shapes of the arcuate portions of the contacts at both ends of the elastic conductive wire may be different from each other.

(G) A connector part which is provided at both ends of a plurality of elastic conductors with linear contacts arcuately provided without slack in the longitudinal direction to electrically bridge between conductors requiring connection, and the elastic conductors in the connector parts. By connecting in advance to one of the linear contacts, the terminal of the printed wiring board already connected to the electronic circuit component that requires connection.

(H) In the printed wiring board, it is preferable that each core wire of the cable is already connected to each contact terminal of the printed wiring board.

(I) In the printed wiring board, it is preferable that the pitch between the land terminals connecting the core wires of the cable to be wider than the pitch between the contact terminals connecting to the connector portion.

(J) It is preferable that the printed circuit board has an electronic circuit already connected to each contact terminal of the printed circuit board.

(K) The printed wiring board is preferably a thin film-based board.

[0018]

A connector having a narrow pitch between wires is provided by providing linear contacts arcuately provided in the longitudinal direction on both ends of the plurality of elastic conductor wires so as to electrically bridge between conductors that require connection. Is formed so that the printed wiring board can be connected to both of the linear contacts.

Thus, printed wiring boards having different thicknesses are connected to each other, or one printed wiring board is printed with the line pitch between the contact terminal side connecting to the connector and the land terminal side connecting the cable. Widen the cable side by the wiring method to facilitate the connection of the core wire of the cable.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment in which the present invention is applied to a connector with a cable.

The connector with cable (1) is connected to the cable (2)
Cable connection part (3) and connector part that firmly connect the
It consists of (4). The connector portion (4) is substantially detachable from the cable connecting portion (3).

The cable connecting portion (3) is a first printed wiring board in which a cable (2) having a large number of core wires (5) inserted therein, a contact terminal (6) and a core wire connecting land (7) are formed by printed wiring.
(8), each core wire (5) of the cable (2) is electrically connected to the core connection land (7) by soldering and is firmly fixed.

Core wire connection land of the first printed wiring board (8)
The rear end provided with (7) and the periphery of each core wire (5) are molded with an insulative synthetic resin material, and the outside is covered with a synthetic resin material (9) for a jacket. There is.

The tip side of the first printed wiring board (8) on which the contact terminals (6) are provided is a synthetic resin material (9) for an outer cover by a required size.
Thus, the upper and lower surfaces of the first printed wiring board 8 (hereinafter, the thickness direction of the printed wiring board is referred to as the vertical direction) are exposed and projected.

As shown in FIGS. 2 and 6, the connector portion (4) is an elastic conductor (12) having arcuate curved portions (10) and (11) at both ends.
Are arranged in parallel, and the tips of the curved portions (10) and (11) are engaged with the insides of the first case member (13) and the second case member (14) to form the curved portions (10) (11). ) Is stretched without slack in the longitudinal direction, and the curved portions (10) and (11) act as a pair of contacts (10A) and (11A) in one connection circuit of the connector portion (4).

The plurality of elastic conductors (12) are arranged in parallel with the unevenness of the curved portions (10) and (11) aligned, and the intermediate portion thereof has an elastic conductor (1
The contact members (16) are formed by being connected by a connecting member (15) made of an insulating synthetic resin material, which is elongated in the parallel direction of 2) (see FIG. 6).

In the connector portion (4), a pair of contact members (16) are provided with the connecting members (15) stacked vertically. It should be noted that the contact member (16) functions sufficiently with only one, but has a parallel multi-contact structure to enhance the reliability of contact.

The first case member (1) in the connector section (4)
3) is an elongated slit (17) through which the end of the contact terminal (6) of the first printed wiring board (8) is inserted on the rear side of the first printed wiring board (8) (right side in the drawing of FIG. 2). Is formed and its slit
Grooves (18) extending in the axial direction are formed slightly inward from (17) (on the left side in the drawing of FIG. 2), above and below the inner surface of the first case member (13), in the direction in which the elastic conductors (12) are arranged. A large number of elastic conductors (12) are formed in conformity with the arrangement pitch.

A pair of contact members (16) are provided in the upper and lower grooves (18).
, And the connecting members (15) with the convex directions of the curved portions (10) and (11) facing each other.
The curved portion (10) extending rearward is fitted in the state of being overlapped with each other.

The lateral width of the groove (18) is slightly wider than the wire diameter of the elastic conductor (12), and the curved portion of the elastic conductor (12) fitted in the groove (18).
(10) is loosely fitted in the groove width direction and loosely fitted in the vertical direction.

At the rear end of the groove (18) near the slit (17), the curved portion (10) is in a free state in which the contact terminals (6) of the printed wiring board (8) are not inserted, and the curved portion is formed. The tip end (10a) of the (10) is in contact, and an appropriately tense elastic force that does not loosen in the longitudinal direction is applied to the curved portion (10).

The superposed connecting members (15) of the pair of contact members (16) are widened step portions (19) provided at the front end of the first case member (13) (left side in the drawing of FIG. 2). ), And the opening of the front end of the first case member (13) of the widening step (19) has a rear end of the second case member (14) (right side in the drawing of FIG. 2) (1
4a) is fitted.

At the front end (left side in the drawing of FIG. 2) of the second case member (14), on the side of the front second printed wiring board (20) (left side in the drawing of FIG. 2), the second printed wiring board ( An elongated slit (21) that penetrates the end of the contact terminal (not shown) of 20) is formed,
A groove (22) similar to the groove (18) extending in the axial direction from slightly inside (right side in the drawing of FIG. 2) from the slit (21).
However, a large number of them are formed above and below the inner surface of the second case member (14) in the arrangement direction of the elastic conductors (12) in alignment with the arrangement pitch of the elastic conductors (12).

On the outside of the second case member (14), there is one
After the pair of contact members (12) and (12) are housed in the first case member (13), the second case member (14) is similarly bent to the curved parts of the upper and lower contact members (12) and (12). While fitting the groove (22) into the groove (22), the rear end (right side) is connected to the tip widening step (1) of the first case member (13).
After fitting to 9), the connecting and fixing layer (23) is molded with synthetic resin so that it is flush with the upper and lower surfaces of the first case member (13), and the connector portion (4) is integrated.

In the connector portion (4) formed as described above,
First printed wiring board (8) in the cable connection part (3)
The contact terminal (6) of (1) is inserted from the rear slit (17).
The connector part (4) and the cable connection part (3) are
Lock pieces (24) provided on the left and right of the first case member (13) of (4)
Further, the first printed wiring board (8) is locked by engagement holes (25) provided on the left and right so that it cannot be easily disengaged.

In the connector with cable (1) constructed as described above, the second printed wiring board (20) is inserted through the slit (21) in the front of the connector part (4) to form the cable (2). The electric circuit on the second printed wiring board (20) side is connected.

In this connection, in the connector portion (4), the contact terminals (6) of the first printed wiring board (8) and the contact terminals of the second printed wiring board (20) are connected to both the elastic conductor (12). It is electrically bridged through the contacts (10A) and (11A). In addition,
In the contact terminals of the first and second printed wiring boards (8) and (20), conductors on both upper and lower surfaces are electrically connected by through holes or the like.

At this time, in both contacts (10A) (11A), the curved portions (10) (11) in the contacts (10A) (11A) are grooved.
Among the (18) and (22), the curved elastic conductor (12) deforms the curved shape because it fits without slack in the longitudinal direction, and the contact terminals of both printed wiring boards (8) and (20). Crimp on.

This crimping force is determined by the amount of change in thickness when the printed wiring boards (8) and (20) are sandwiched from the free state of the curved portions (10) and (11), and the cable connecting portion (3) First printed wiring board
Since (8) corresponds to a comparatively thick one made of normal epoxy material or Bakelite material, the curved portion at the rear end (10)
In the curved shape of, the top of the convex portion is slightly separated from the plate thickness center line of the substrate.

Since the second printed wiring board (20) is intended for a film board, the curved shape of the curved portion (11) at the front end is
When the board is not mounted, the projections of the upper and lower curved parts (11) are pressure-bonded to each other so that the top of the projection is equal to the board thickness center XX line or slightly protrudes in the opposite direction. It is good to leave it to the extent that

An example of specific dimensions of the contact member (16) is as follows: the elastic conductor (12) has a wire diameter of 0.15 mm, a length of 30 mm, and a line pitch of 0.5 mm.

FIGS. 7 and 8 show another embodiment different from the above, which is an example in which the contact member 16 shown in FIG. 6 is modified. In the contact member (16), since the tips of the elastic conductors (12) are distant from each other, the contact member (16) is likely to be deformed in a component state before assembly.

In the embodiment of FIG. 7, the tips (10a) (11a) of both curved portions (10) (11) of each elastic conductor (12) of the contact member (16a).
Is a connecting member made of insulating synthetic resin elongated in the parallel direction (26)
It is connected with.

FIG. 8 shows a connector portion (4a) formed by the contact member (16a) of FIG. 7, and each slit (17)
Grooves (27) that are long in the left-right direction are formed at the rear end of each groove (18) and the front end of the groove (22) above and below the inside of (21), and the connecting material (26) is formed in this groove (27). Engaged.

FIG. 9 shows the structure of the connector with cable (1) and its usage. FIG. 10 shows an example in which the connector part (4) is used by being fixed in advance to the film substrate which constitutes the second printed wiring board (20). In this example,
It is detachably used at the first printed wiring board (8).

As described above, the connector of the present invention can be easily used by changing its usability on both the cable side and the board side having an electronic circuit.

[0047]

Since the present invention has the above-mentioned structure,
It has the following effects. (A) Easily electrically bridge the contact terminals of the printed wiring boards having different thicknesses.

(B) It can be fixed and used on either the cable side or the substrate side provided with an electric circuit.

(C) Since the printed wiring boards are connected to each other, an extremely narrow terminal pitch can be constructed, and an extremely small connector can be manufactured.

(D) Since the printed wiring board can easily and precisely change the pitch between the contact terminals that come into contact with the connector and the land terminals for connecting the core wires that connect to the core wires of the cable, it is possible A very small connector with a cable that can be easily connected can be made.

[Brief description of drawings]

FIG. 1 is a connector 1 with a cable showing an embodiment of the present invention.
It is a partial notch top view.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a partial sectional view taken along the line III-III in FIG.

FIG. 4 is a partial cross-sectional view taken along the line IV-IV of FIG.

5 is a partial sectional view taken along line VV of FIG.

FIG. 6 is one of the contact members used in the embodiment of FIG.
It is a partial cutaway perspective view.

FIG. 7 is one of the contact members used in the second embodiment.
It is a partial cutaway perspective view.

8 is a partially cutaway perspective view of a connector portion using the contact member of FIG. 7. FIG.

FIG. 9 is an exploded perspective view illustrating a procedure of using the connector portion as a connector with a cable.

FIG. 10 is an exploded perspective view illustrating a procedure of fixing the connector portion to the electronic circuit board side for use.

[Explanation of symbols]

 (1) Connector with cable (2) Cable (3) Cable connection part (4) (4a) Connector part (5) Core wire (6) Contact terminal (7) Core wire connection land (8) First printed wiring board (9) Synthetic resin material (10) (11) Curved part (10a) (11a) Tip (10A) (11A) Contact (12) Elastic conductor (12a) Tip (13) First case member (14) Second case member (14a) ) Rear end (15) Connecting material (16) (16a) Contact member (17) (21) Slit (18) (22) Groove (19) Widened step (20) Second printed wiring board (20a) Contact terminal (23) Connection fixing layer (24) Lock piece (25) Engagement hole (26) Connection material (27) Groove

Claims (11)

[Claims] 1. A connector, characterized in that linear contacts, which are arcuately provided in the longitudinal direction without slack, are provided at both ends of the elastic conductor to electrically bridge between conductors that require connection. 2. A plurality of elastic conductors are arranged in parallel so that the concavo-convex directions of the arcuate portions of the linear contacts in the elastic conductors are aligned, and the substantially central portion in the longitudinal direction of the group of elastic conductors is arranged. The connector according to claim 1, wherein the connectors are connected by an insulating synthetic resin material. 3. The connector according to claim 2, wherein the plurality of elastic conductors connecting the central portions are connected to each other at the ends of the linear contacts at both ends of the elastic conductors with an insulating synthetic resin material in the parallel direction of the elastic conductors. . 4. An elastic conducting wire having central portions connected to each other is arranged such that a pair of elastic conducting wires having the same structure and connecting central portions of a plurality of conducting wires are arranged on the same plane, and a superimposing surface is symmetrical. 4. The connector according to claim 2, wherein the connector is formed by stacking an insulating synthetic resin portion connecting the central portions so that the convex portions of the linear contacts of the same shape face each other as a surface. 5. The connector according to claim 1, wherein the linear contacts arcuately provided without slack in the longitudinal direction have the same arcuate portion shape of each contact at both ends of the elastic conductive wire. 6. The connector according to claim 1, wherein the linear contacts arcuately provided without slack in the longitudinal direction have different shapes of the arcuate portions of the contacts at both ends of the elastic conductor. 7. A connector part, which is provided at both ends of a plurality of elastic conductive wires with arc-shaped linear contacts provided without slack in the longitudinal direction and electrically bridges between conductors requiring connection, and an elastic conductive wire in the connector parts. A connector, wherein a terminal of a printed wiring board that has already been connected to an electronic circuit component requiring connection is connected to one of the linear contacts in advance. 8. The connector according to claim 7, wherein the printed wiring board has each core wire of the cable already connected to each contact terminal of the printed wiring board. 9. The connector according to claim 8, wherein the printed wiring board has a pitch between the land terminals connecting the core wires of the cable wider than a pitch between the contact terminals connecting with the connector portion. 10. The connector according to claim 7, wherein the printed wiring board has an electronic circuit connected to each contact terminal of the printed wiring board. 11. The connector according to claim 7, wherein the printed wiring board is a film-based thin board.