JP2002124323A - Connector for substrate connection, and connecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for connecting a substrate in free detachment with high connection reliability and durability. SOLUTION: The connector for substrate connection 30 is composed of a case 40, an insulation sheet 20, and a slider 50. The slider 50 for the case 40 has a cross-section shape, equipped with a hollow part 41 for a substrate and a hollow part 42 for the slider into which an end part 11 of the substrate 10 can insert from top and bottom and from an opposite direction, and at the same time, the hollow part 41 for the substrate and the hollow part 42 for the slider are communicated with each other. Furthermore, the insulation sheet 20 is spread over the case 40, so as to partition the hollow part 41 for the substrate and the hollow part 42 for the slider and the contact point for connection is made exposed to the surface opposite to the end part 11 of the substrate 10. Also, the slider 50 can insert contact screws 55, 57 for pressure-connecting the contact point for connection of the substrate 10 with the contact point for connection of the insulation sheet 20 into the hollow part 42 of for the slider of the case 40 in free insertion and removal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for board connection, and more particularly to a connector used for connecting a printed wiring board to a flexible wiring sheet.

[0002]

2. Description of the Related Art Conventionally, connection between a glass substrate and a flexible wiring sheet has been performed by thermocompression bonding. However, this method cannot be removed after thermocompression bonding. Therefore, if a defect is found in any of the components after the completion of the assembly, the entire assembled product must be discarded, which is uneconomical.

On the other hand, as a method for detachably connecting a glass substrate, a connector connection method (Japanese Patent Application Laid-Open No. 7-22129) is employed. That is, the connection springs are detachably connected to the connection contacts of the glass substrate so as to press the respective contact springs of the cross-sectionally shaped material.

However, in the connection method described above, a large number of connectors are incorporated into a locator, which is a resin molded product, one by one at a predetermined pitch. For this reason, if the locator thermally expands in a high temperature environment during use, the pitch between adjacent connectors changes, and there is a possibility that conduction failure may occur. In addition, since a metal contact having a spring property comes into direct contact with the connection contact of the glass substrate, there is a problem that the thin connection contact is easily peeled off and the durability is low.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a detachable board connector with high contact reliability and excellent durability.

[0006]

According to the present invention, there is provided a connector for connecting a board, wherein the connecting contact printed on an end of the board and the connecting contact printed on a flexible insulating sheet are provided. A connector for electrically connecting the slider and the slider via a slider, comprising a substrate cavity and a slider cavity in which the end of the substrate and the insertion portion of the slider can be inserted vertically and in opposite directions. Having a shape, a case in which the substrate cavity and the slider cavity communicate with each other, and a case stretched over the case to partition the substrate cavity and the slider cavity, An insulating sheet exposing the connection contact on a surface facing an end; a connection contact between the substrate and the insulation sheet inserted into the substrate cavity; The contact spring for pressing the door, a slider for loading and unloading can be inserted into the slider cavity portion of the case, it is constituted comprising a.

Therefore, according to the present invention, the pressure contact state with respect to the substrate can be arbitrarily released by pulling out the slider, so that the substrate can be removed even after the completion of the assembly, which is economical. In general, the insulating sheet has a small thermal expansion and the pitch between the connecting contacts is hard to change, so that there is no possibility of causing a conduction failure as in the conventional example. Further, the contact spring comes into contact with the connection contact provided at the end of the substrate via the insulating sheet. Therefore, unlike the conventional example, the contact spring does not directly contact the connection contact of the substrate, it is difficult to peel off, and the durability is improved.

In another embodiment, the contact spring comprises:
A plurality of elastic teeth that individually press a plurality of connection contacts arranged in parallel on an insulating sheet from the back surface may be cut out from one elastic plate. According to this embodiment, even if the slider thermally expands in a high-temperature environment during use, since the elastic teeth of the contact spring are cut out from one elastic plate, the pitch between adjacent elastic teeth changes. And there is no possibility of poor conduction.

Further, as another embodiment, a slider is provided with a plurality of contact springs obtained by cutting a plurality of elastic teeth from a single elastic plate at a predetermined pitch, and the slider is moved forward and backward by meshing the elastic teeth with each other. , The elastic teeth may be arranged in a staggered manner. According to this embodiment, the pitch of the adjacent connection contacts can be increased, so that the insulating properties of the large number of connection contacts pressed by the elastic teeth can be increased.

In another embodiment, the contact spring is formed of one bent elastic plate, and the pressing projections are juxtaposed at positions corresponding to the connecting contacts of the insulating sheet. Is also good. According to this embodiment, it is not necessary to cut out the elastic teeth one by one from the elastic plate, so that the productivity is improved and the precision of the parts is also improved.

[0011] In another embodiment, the insulating sheet comprises:
One end thereof may be positioned by being locked to a locking claw protruding from one side surface of the case, and the other end portion may be fixed by caulking protrusion protruding from the other side surface of the case. According to this embodiment, since the temporarily fixed insulating sheet can be stretched without being loosened in the case, the productivity is high and the assembling accuracy is improved.

In another embodiment, the end portion of the substrate and the insertion portion of the slider have a cross-sectional shape including a substrate cavity portion and a slider cavity portion which can be inserted vertically and in opposite directions. A case in which the substrate cavity and the slider cavity are communicated with each other, and a case which is stretched over the case to partition the substrate cavity and the slider cavity, and faces an end of the substrate. An insulating sheet having the connecting contacts exposed on the surface to be contacted, and a contact spring for press-contacting the connecting contacts of the board and the connecting contacts of the insulating sheet inserted into the board cavity, the slider of the case. And a slider that is removably inserted into and out of the cavity for a board, wherein an end of the board is inserted into the cavity for the board, and the connection contact is connected to the contact of the insulating sheet. After making contact with the contact for use, the slider is inserted into the slider cavity, and the contact spring of the slider presses the back surface of the connection contact of the insulating sheet against the substrate side, and presses against the connection contact of the substrate. There is a method for connecting a connector for connecting a substrate, which is characterized by comprising steps.
According to this embodiment, after the end of the board is inserted, the slider is inserted and the connection contact of the insulating sheet is pressed against the connection contact of the board. Therefore, not only can the substrate be detached, but also the connection contacts of the substrate and the insulating sheet do not rub against each other, and the connection contacts are less likely to be separated, so that there is an effect that durability is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described with reference to the accompanying drawings of FIGS. In the embodiment according to the present invention, as shown in FIG. 1, a flexible printed wiring sheet (hereinafter, referred to as “FPC”) 2
0 is a connector 30 for connection. The connector 30 includes a case 40 and a slider 50.

Examples of the substrate 10 include a plasma display, a liquid crystal substrate, a memory card, and the like. The connection end 11 protruding from the substrate 10
A plurality of connection contacts (not shown) are printed in a zigzag pattern at a predetermined pitch on the lower surface of the.

The FPC 20 is a printed circuit formed on the surface of an insulating sheet. As shown in FIG. 1, a plurality of relay contacts 21 are printed at a predetermined pitch on one end of the FPC. Further, the FPC 20 is configured as shown in FIG.
(A) As shown in FIG.
2 and round holes 23 for caulking are alternately formed at a predetermined pitch, and a long hole 24 for caulking (FIG. 6 (B)) is formed at an intermediate portion thereof. Moreover, between the rectangular hole 22 for locking and the round hole 23 for caulking, and the long hole 24 for caulking,
A plurality of connection contacts 25, 26 are provided in a staggered pattern at a predetermined pitch in front, rear, left and right (FIG. 9). It is needless to say that the plurality of relay contact portions 21 and the plurality of connection contact portions 25 and 26 are respectively electrically connected. In the present embodiment, since the fixed contacts for connection 25 and 26 are arranged in a staggered manner, the distance between adjacent fixed contacts can be increased.
There is an advantage that insulation is high.

As shown in FIG. 7, the case 40 has a first hollow portion in which the connection end portion 11 of the substrate 10 and an insertion portion 52 of a slider 50 described later can be slidably fitted in up and down directions and in opposite directions. 41 and a second cavity 42. The first cavity 41 and the second
The upper and lower cavities 42 communicate with each other. A plurality of pairs of position regulating ribs 43 are formed at predetermined intervals below one side surface of the case 40 (FIG. 6).
(A)). Further, the FP is provided between the ribs 43, 43.
A locking claw 44 and a caulking protrusion 45, which can position and fix one end of the C20, are arranged side by side at a predetermined pitch. On the other hand, a plurality of pairs of upper and lower caulking projections 46, 46 which engage with the long holes 24 of the FPC 20 and are caulked and fixed at a predetermined pitch are formed above the remaining one side surface of the connector 30 (FIG. FIG. 6 (B).

As shown in FIGS. 4 and 5, the slider 50 includes a slider body 51 and a pair of contact springs 55,
57. The slider body 51 has a side surface substantially L extending a pair of insertion portions 52, 52 from both sides thereof.
It is a letter-shaped resin molded product, and a plurality of crimping projections 53 protrude from the lower surface located between the insertion portions 51. Further, the slider body 51 has a handle 54 on its back surface.
Are integrally formed.

The contact spring 55 has a plurality of resilient teeth 56 formed at one end thereof in a comb-like shape at a predetermined pitch.
While the top formed by bending is used as the press contact portion 56a,
A plurality of caulking holes 55a are formed at the other end side edge. The contact spring 57 has a pressure contact portion 58a and a caulking hole 57a that are substantially the same as those of the contact spring 55 except that the bending angle of the elastic teeth 58 is different.

Then, the contact springs 55 and 57 are caulked and fixed to the caulking projections 53 formed on the bottom surface of the slider body 51 by shifting them by one pitch. Thereby, the contact spring 5
The 5, 57 pressure contact portions 56a, 58a are arranged in a staggered manner at a predetermined pitch in the front, rear, left and right directions.

The contact springs 55 and 57 may be formed by simply bending a single elastic thin plate. In this case, the contact springs 55 and 57 may be formed by, for example, protruding only the portions of the FPC 20 that are in contact with the connection contacts. A projection may be provided. This further improves the contact reliability.
Further, the contact spring may be formed by arranging a large number of independent metal elastic teeth at a predetermined pitch and integrally molding the heat-resistant resin with little thermal deformation.

Next, a method of assembling and connecting the above components will be described. First, the rectangular hole 22 of the FPC 20 is locked to the locking claw 44 of the case 40 shown in FIG. 6A, and the crimping projection 45 is fixed by crimping while pulling the wide end thereof. Further, as shown in FIG.
The long hole 24 of the FPC 20 is fitted into the caulking projection 46, and caulked and fixed. As a result, the FPC 20
The cavity 41 is separated from the second cavity 42 (FIG. 7). According to the present embodiment, after temporarily fixing the FPC 20 to the locking claw 44, the FPC 20 can be fixed by caulking while pulling the FPC 20 with one hand, so that workability is good. Further, since the FPC 20 can be fixed by caulking without sagging, there is an advantage that the assembling accuracy is high.

Next, by inserting the end portion 11 of the substrate 10 into the first cavity portion 41, the connection contact of the substrate 10 becomes F
The contact contacts 25 and 26 of the PC 20 respectively.
At this time, the FPC 20 itself is flexible,
In addition, since the slider 50 is not press-fitted into the second hollow portion 42, the connecting contacts of the two do not rub against each other and are not separated.

Further, when the insertion portion 52 of the slider 50 is pressed into the second hollow portion 42, the first and second contact springs 55, 5
The respective elastic teeth 56 and 58 of No. 7 push up the FPC 20. In particular, the pressing portions 56a, 58a of the elastic teeth 56, 58
The respective connection contacts 25 and 26 of the substrate 20 are individually pushed up and pressed against the corresponding connection contacts of the substrate 10. For this reason,
There is an advantage that a high contact pressure can be secured and the contact reliability is high. When the substrate 10 is separated from the FPC 20, the reverse operation may be performed.

In the above-described embodiment, the case where two contact springs are combined has been described. However, the present invention is not limited to this. Only one contact spring may be used, or three or more contact springs may be combined. Good. Further, in the present invention, it is a matter of course that the substrate and the slider according to the above-described embodiment may be connected by reversing the vertical relationship.

[0025]

According to the present invention, by pressing out the slider, the press-contact state with respect to the substrate can be arbitrarily released, so that the substrate can be removed even after the assembly is completed, which is economical. In general, the insulating sheet has a small thermal expansion and the pitch between the connecting contacts is hard to change, so that there is no possibility of causing a poor conduction as in the conventional example. Further, the contact spring comes into contact with the connection contact provided at the end of the substrate via the insulating sheet. Therefore, unlike the conventional example, the contact spring does not directly contact the connection contact of the substrate, so that the contact spring is less likely to be peeled off and the durability is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view after connection of an embodiment according to the present invention.

FIG. 2 is a perspective view of the middle of pulling out a slider from the connector of FIG. 1 as viewed from the rear.

FIG. 3 is a perspective view showing a state after a slider is pulled out from the connector of FIG. 1;

FIG. 4 is a perspective view of the slider shown in FIG.

FIG. 5 is an exploded perspective view of FIG.

FIGS. 6A and 6B are partially enlarged perspective views of the connector shown in FIG.

FIG. 7 is a cross-sectional view showing a state where the slider is being pressed into the connector into which the board has been inserted.

FIG. 8 is a cross-sectional view showing a state where the slider is pressed into the connector into which the board is inserted.

FIG. 9 is an enlarged partial cross-sectional perspective view showing a state where an FPC is mounted on the connector.

[Explanation of symbols]

10 ... board, 11 ... connection end, 20 ... FPC, 21 ...
Relay contact, 22: rectangular hole for locking, 23: round hole for caulking, 24: long hole for caulking, 25, 26: contact for connection, 3
0 ... connector, 40 ... case, 41, 42 ... first and second
Cavity, 43 ... Position regulating rib, 44 ... Locking claw, 45
46: caulking projection, 50: slider, 51: slider body, 52: insertion portion, 53: caulking projection, 54: handle, 55, 57: contact spring, 56, 58: elastic teeth, 56
a, 58a...

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (6)

[Claims] 1. A board connection connector for electrically connecting a connection contact printed on an end of a board and a connection contact printed on a flexible insulating sheet via a slider, comprising: The slider has a cross-sectional shape including a substrate cavity and a slider cavity in which the insertion portion of the slider can be inserted vertically and in the opposite direction, and the substrate cavity and the slider cavity communicate with each other. A case, an insulating sheet stretched over the case so as to partition the substrate cavity and the slider cavity, and exposing the connection contact on a surface facing an end of the substrate; and the substrate. A contact spring that presses the connection contact of the substrate and the connection contact of the insulating sheet inserted into the cavity for insertion into and out of the slider cavity of the case. A connector for board connection, comprising: a slider to be inserted; 2. A plurality of elastic teeth, each of which presses a plurality of connection contacts arranged in parallel on an insulating sheet from a back surface, are cut out from one elastic plate by the contact spring. The connector for connecting a substrate according to the item. 3. A slider comprising: a plurality of contact springs obtained by cutting out a plurality of elastic teeth from a single elastic plate at a predetermined pitch; The board connecting connector according to claim 1 or 2, wherein the elastic teeth are arranged in a staggered manner. 4. The contact spring according to claim 1, wherein the contact spring is formed of one bent elastic plate, and the pressing projections are juxtaposed at positions corresponding to the connection contacts on the insulating sheet. Connector for board connection. 5. An insulating sheet is positioned by locking one end of the insulating sheet to a locking claw projecting from one side of the case, and the other end is formed by a caulking projection projecting from the other side of the case. The connector according to any one of claims 1 to 4, wherein the connector is fixed by caulking. 6. A substrate cavity having a cross-sectional shape including a substrate cavity and a slider cavity into which an end of the substrate and an insertion portion of the slider can be inserted vertically and in opposite directions. And a case in which the slider cavity is communicated with the case, and the case is stretched in the case so as to partition the substrate cavity and the slider cavity. An insulating sheet with exposed contacts, and a contact spring for pressing the connection contact of the substrate and the connection contact of the insulating sheet inserted into the substrate cavity into and out of the slider cavity of the case can be taken in and out. And a slider to be inserted into the substrate connecting connector, after inserting an end of the substrate into the substrate cavity and bringing the connecting contact thereof into contact with the connecting contact of the insulating sheet.
Inserting a slider into the slider cavity, pressing a back surface of the connection contact of the insulating sheet toward the substrate by a contact spring of the slider, and pressing the connection contact of the substrate against the connection contact of the substrate. Connector connection method.