JP3656125B2 - Flexible plate-like wire connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector for connecting a flexible plate-like electric wire for connecting a flexible plate-like electric wire such as an FPC or FCC and a printed wiring board.
[0002]
[Prior art]
Conventionally, in order to connect a flexible plate-like electric wire such as FPC or FCC to a printed wiring board, a flexible plate-like electric wire connecting connector having a ZIF (zero-inforce) structure is used because the flexible plate-like electric wire is flexible. The terminal portion of the flexible plate-shaped electric wire can be suitably inserted into the connector with a small insertion force. As such a connector for connecting a flexible plate-shaped electric wire, the one shown in FIG. 10 is provided. (See Patent Document 1).
[0003]
The flexible plate-like electric wire connector 1 includes a housing 4 having a plate-like electric wire insertion portion 3 into which a terminal portion of the flexible plate-like electric wire 2 to be connected is inserted, and an elastic protruding into the plate-like electric wire insertion portion 3. A plurality of contacts 5, 6 having contact portions 5 a, 6 a that are connected to the printed wiring board 7, a slider 8 that can be inserted into and removed from the plate-like electric wire insertion portion 3, and a housing 4 that is rotatably supported by the slider. And an operation lever 10 having a cam portion 9 that is driven, and by rotating the operation lever 10, the slider 8 is driven by the operation of the cam portion 9 and is inserted into the plate-shaped electric wire insertion portion 3. The flexible plate-shaped electric wire can be moved back and forth between the position where the plate-shaped electric wire is inserted and the slider is inserted into the plate-shaped electric wire insertion portion together with the flexible plate-shaped electric wire. When the slider 8 is in contact with the elastic contact portions 5a and 6a of the contact and the slider 8 is pulled out of the plate-like electric wire insertion portion, the terminal portion of the flexible plate-like electric wire is suitably inserted into the connector with a small insertion force. It can be done.
[0004]
[Patent Document 1]
JP-A-2002-175848 [0005]
[Problems to be solved by the invention]
However, in the conventional technology as described above, when the size of the entire connector is reduced, the radius of the pressing curved surface of the cam portion that follows the slider is inevitably reduced, and accordingly the amount that the slider can slide is reduced. Therefore, the area of the portion where the slider presses the terminal portion of the flexible plate-shaped electric wire to the contact side becomes small, sufficient holding power cannot be obtained, and the problem that the flexible plate-shaped electric wire is easily pulled out from the plate-shaped electric wire insertion portion. there were.
[0006]
In view of the state of the prior art as described above, the present invention can ensure a sufficient slider slide amount even when the entire connector is downsized, and the flexible plate-shaped electric wire does not easily come off. An object of the present invention is to provide a connector for connecting an electric wire.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems and achieve the intended object, the invention of claim 1 is a housing having a plate-like electric wire insertion portion into which a terminal portion of a flexible plate-like electric wire to be connected is inserted. And having an elastic contact portion protruding into the plate-like electric wire insertion portion, and being inserted into and removed from the plate-like electric wire insertion portion, and a plurality of contacts connected to the printed wiring board, and inserted into the plate-like electric wire insertion portion Accordingly, the slider includes a slider that elastically contacts the terminal portion of the flexible plate-shaped electric wire with the elastic contact portion of the contact, and an operation lever that is rotatably supported by the housing. It has a cam part that contacts the driven part provided on the slider, and by rotating the operation lever, the cam part presses the driven part, and the slider is inserted into the plate-like electric wire insertion part. In the flexible plate-shaped electric wire connecting connector configured to advance and retreat between the position where it is removed and the position where it is removed from the plate-shaped electric wire insertion portion, the cam portion has a distance from the rotation axis center of the operation lever. A plurality of different cams are provided, and by rotating the operation lever, the cams sequentially contact with corresponding portions of the driven portion, and the sliders are operated sequentially.
[0008]
By comprising in this way, the sliding amount of a slider can be taken much and the area of the press surface contact | abutted to a flexible plate-shaped electric wire also becomes large, Therefore A flexible plate-shaped electric wire can be hold | maintained suitably.
[0009]
According to a second aspect of the present invention, in addition to the configuration of the first aspect, each cam has a pressing curved surface, the pressing curved surfaces are arranged to form a step, and the slider is in contact with each of the cams. A plurality of driven surfaces arranged in a stepped manner, and by rotating the operation lever, the corresponding cams respectively contact the driven surfaces of the slider in order, It is characterized by being operated sequentially.
[0010]
By configuring in this way, it is possible to increase the sliding amount of the slider.
[0011]
In addition to the configuration of claim 1 or 2, the invention of claim 3 is provided with a confirmation window for visually confirming the contact fixed to the printed wiring board when the slider is in a position where it is pulled out from the plate-like electric wire insertion portion. It is characterized by having.
[0012]
By comprising in this way, the connection state of soldering etc. with the contact which was difficult to confirm and a printed wiring board can be confirmed suitably.
[0013]
According to a fourth aspect of the present invention, in addition to the configuration of the first, second, or third aspect, a slider is inserted into the plate-like electric wire insertion portion along the flexible plate-like electric wire, And a retaining protrusion that is engaged with a retaining recess formed on the side edge of the housing.
[0014]
By comprising in this way, a flexible plate-shaped electric wire becomes difficult to come off, and a suitable connection state can be maintained.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the flexible plate-like wire connecting connector according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part same as the above-mentioned prior art example, and description is abbreviate | omitted.
[0016]
1 and 2 show a connector for connecting a flexible plate-like electric wire according to the present invention. Reference numeral 20 denotes a connector for connecting a flexible plate-like electric wire, reference numeral 21 denotes a flexible plate-like electric wire such as an FPC, and reference numeral 7 denotes a connector to which the connector is connected. Printed wiring board.
[0017]
As shown in FIG. 3, the flexible plate-shaped electric wire 21 has flexibility, and has a terminal portion composed of conductive patterns 21 a, 21 a... Formed in a staggered arrangement by printed wiring on one surface of the end portion. It is provided and is electrically connected to the printed wiring board 7 via the flexible plate-like electric wire connector 20.
[0018]
Further, a retaining recess 22 is formed at the side edge of the flexible plate-shaped electric wire 21.
[0019]
Like the conventional example shown in FIG. 11, the printed wiring board 7 includes connection terminal portions 7a, 7a,... Arranged on the surface in a zigzag pattern by printed wiring.
[0020]
A connector 20 for connecting a flexible plate-like electric wire includes a housing 24 having a plate-like electric wire insertion portion 23, two types of contacts 25 and 26, a slider 27 that can be inserted into and removed from the plate-like electric wire insertion portion 23, and an operation lever 28. By rotating the operation lever 28, the slider 27 is moved forward and backward between the position inserted into the plate-like electric wire insertion portion 23 and the position pulled out from the plate-like electric wire insertion portion 23, At the position where the slider 27 comes out of the plate-like electric wire insertion portion 23, the flexible plate-like electric wire 21 can be inserted into and removed from the plate-like electric wire insertion portion 23 with a small force.
[0021]
As shown in FIG. 4, the housing 24 is formed in a horizontally long rectangular parallelepiped shape with an insulating plastic resin, and is opened on the front side of the housing 24, and a horizontally long slit-shaped plate-like wire insertion portion 23 into which the flexible plate-like wire 21 is inserted. Is provided.
[0022]
Further, the housing 24 communicates with the plate-like electric wire insertion portion 23 and has front-side contact insertion grooves 29, 29... Opened on the front side and back-side contact insertion grooves 30, 30. The contact 25 is inserted into the front side contact insertion groove 29 and the contact 26 is inserted into the back side contact insertion groove 30 and held, and the contact portions of the two types of contacts 25 and 26 are placed in the plate-like wire insertion portion 23. Corresponding to the conductive pattern of the flexible plate-shaped electric wire 21, it protrudes in a staggered arrangement.
[0023]
On both sides of the housing 24, guide frames 31, 31 comprising a bottom 31 a and outer wall portions 31 b rising from both side edges and mounting protrusions 31 c open upward, and the mounting protrusions 31 c are connected to the housing 24. By being press-fitted into an attachment hole provided in the housing, the housing is attached so as to be continuously arranged along the side surface of the housing.
[0024]
A slide support groove 33 is formed on the outer wall portion 31 b of the guide frame 31 so that a slide projection 32 protruding from the outer surface of the slider 27 is slidably supported. The built-in slider 27 is supported so as to be slidable in the front-rear direction, and the operation lever 28 is rotatably prevented.
[0025]
Further, the guide frame 31 is provided with a mounting piece 34 projecting outward, and the mounting piece 34 is fixed to the mounting pattern 7b of the printed wiring board 7 by soldering or the like, thereby connecting a flexible plate-like electric wire. The entire connector can be fixed to the printed wiring board.
[0026]
Two types of contacts each formed by punching a conductive metal plate such as a copper alloy having elasticity into a bifurcated fork shape are used.
[0027]
As shown in FIG. 5A, the contact 25 includes an elastic contact piece 35 having a contact portion 35 a at the tip, a fixed piece 36 that is formed in a continuous arrangement with the elastic contact piece 35 and is attached to the housing 24. And an elastic contact piece 35 and a support piece portion 37 for receiving a reaction force having a terminal portion 37a connected to a terminal portion of the printed wiring board and having an end portion connected to the terminal portion of the printed wiring board.
[0028]
On the other hand, as shown in FIG. 5B, the contact 26 has a proximal end side held by the housing 24, and a distal end side elastically contacted with the terminal portion of the flexible plate-shaped electric wire and the elastic contact piece portion 38a that is in contact with the contact portion 38a. , An elastic contact piece 38, a reaction force receiving support piece 39 formed in a bifurcated fork shape, and a terminal piece 40 connected to the printed wiring board formed in a continuous arrangement with the support piece 39 It has.
[0029]
The contacts 25 and 26 are inserted so that the contact 25 is inserted into the contact insertion groove from the front side of the housing and the contact 26 is inserted into the contact insertion groove from the rear side of the housing, and the contact portions 35a and 38a are projected into the plate-like electric wire insertion portion 23. It has become.
[0030]
As shown in FIG. 6, the slider 27 is formed of an insulating plastic resin, and has a flat plate-like pressing plate portion 41 inserted into the plate-like electric wire insertion portion 23 and slide arm portions 42, 42 arranged on both sides thereof. And are integrally formed.
[0031]
On the outer side of the slide arm portion 42, a slide projection 32 is slidably fitted into the slide support groove 33 of the guide frame 31, and a driven recess 43 is formed on the inner side of the slide arm portion 42. ing.
[0032]
On the front side of the driven recess 43, that is, on the side edge of the slider 27 in the pull-out direction, a pull-out direction driven portion comprising the driven surface 44 is formed, and a stepped notch is formed inside the pull-out direction driven portion. A relief recess 45 having a conventional shape is formed.
[0033]
Further, an insertion direction driven portion in which an initial driven surface 46 and a secondary driven surface 47 are arranged stepwise is formed on the back side of the driven recess 43, that is, on the insertion direction side edge of the slider 27. Yes.
[0034]
The pressing plate portion 41 can be inserted into and removed from the plate-like electric wire insertion portion 23 and is inserted into the plate-like electric wire insertion portion 23 together with the terminal portion of the flexible plate-like electric wire. 26 is pressed in the direction of the contact portions 35a and 38a, and the thickness of the pressing plate portion 41 can adjust the contact deflection amount, that is, the contact pressure.
[0035]
Further, the pressing plate portion 41 includes confirmation windows 48, 48..., And the terminal portion 37 a of the contact 25 fixed to the printed wiring board 7 when the slider 27 is in a position where it is pulled out from the plate-like electric wire insertion portion 23. , 37a... Can be visualized.
[0036]
Further, a locking projection 49 is provided on the side surface of the pressing plate 41 so as to lock the retaining recess 22 of the flexible plate-shaped electric wire.
[0037]
In this slider 27, the pressing plate portion 41 can be inserted into and removed from the plate-like electric wire insertion portion 23, and the slide arm portions 42, 42 on both sides are supported so as to be slidable with respect to the housing 24. Is freely movable between a position where it is inserted into the plate-shaped electric wire insertion portion 23 and a position where it is pulled out.
[0038]
As shown in FIG. 7, the operation lever 28 is formed in an overall U shape with an insulating plastic resin, and a pair of rotating arm portions 51, 51 are integrally provided on both sides of the horizontally long rod-like operation portion 50. It has been.
[0039]
A rotating shaft 52 protrudes from the inner end of the rotating arm 51 and is pivotally supported on the outer surface of the housing so that the operation lever 28 can rotate with respect to the housing 24. It has come to be supported. Further, a cam portion 53 that drives the slider 27 is provided outside the rotating arm portion 51.
[0040]
The cam portion 53 includes an initial motion cam 54 and a secondary motion cam 55 having pressing curved surfaces 54a and 55a having different distances from the rotation axis center. The initial motion cam 54 and the secondary motion cam 55 are each of the pressing curved surfaces 54a. , 55a are arranged so as to be displaced in the turning radius direction of the operation lever 28 to form a step, and the step in the turning radius direction is larger than the step of the driven surfaces 46, 47 for the insertion direction of the slider.
[0041]
Further, on the opposite side of the pressing curved surface of the initial motion cam 54, a planar pressing slope 54b and a pressing plane 54c are formed in a continuous arrangement.
[0042]
The initial cam 54 is configured such that the pressing inclined surfaces 54b and 54c are in contact with the corresponding driven surface 44 with respect to the follower portion for the withdrawal direction, and the pressing curved surface 54a is associated with the driven portion for the insertion direction. It abuts on the initial driven surface 46.
[0043]
On the other hand, the secondary moving cam 55 is configured not to come into contact with the slider 27 by providing the relief recess 45 with respect to the follow-out part for the withdrawal direction. The press curved surface 55a comes into contact with the corresponding secondary driven surface 47.
[0044]
Next, the operation state of this flexible plate-shaped wire connecting connector will be described with reference to FIGS.
[0045]
When the operation lever 28 is rotated from the position in FIG. 8A to the front side, that is, in the withdrawal direction, the initial cam 54 is moved to the driven surface 44 in the withdrawal direction of the slider 27 as shown in FIG. 8B. The pressing slope 54b comes into contact, and the slider 27 is moved out in accordance with the exit direction.
[0046]
When the operating lever 28 is further rotated in the withdrawal direction, the position of the initial cam 54 that contacts the withdrawal direction driven surface 44 is shifted from the pressing slope 54b to the pressing plane 54c as shown in FIG. The flat surface 54c abuts on the exit direction driven surface 44, and the slider 27 is driven in the exit direction.
[0047]
Then, with the pressing flat surface 54c of the initial cam 54 in contact with the driven surface 44, as shown in FIG. At that position, the slide protrusion 32 of the slider 27 comes into contact with the edge of the slide support groove 33, the slide stops, and the slider 27 comes out of the plate-like electric wire insertion portion 23.
[0048]
In this state, since the pressing plate portion 41 of the slider is not inserted into the plate-like electric wire insertion portion 23, the contact portions 35a and 38a of the contacts protruding into the plate-like electric wire insertion portion 23, and the plate facing the contact portion A gap wider than the thickness of the flexible plate-like electric wire is formed between the inner wall surface of the wire-like electric wire insertion portion, and the flexible plate-like electric wire can be inserted without receiving contact pressure from the contacts 25 and 26.
[0049]
In the series of operations in the direction in which the slider 27 is pulled out, the secondary moving cam 55 is prevented from coming into contact with the slider 27 by providing the relief recess 45.
[0050]
Next, when a flexible plate-like electric wire is inserted into the plate-like electric wire insertion portion 23 and the operation lever 28 is rotated from the position where the operation lever 28 is stood up (FIG. 9A) to the back side, that is, the insertion direction side, As shown in FIG. 9B, the pressing curved surface 54a of the initial motion cam 54 having a small turning radius comes into contact with the initial motion driven surface 46 for the insertion direction, and the slider 27 is driven in the insertion direction.
[0051]
When the operating lever 28 is rotated to a certain position in this state, as shown in FIG. 9C, the pressing curved surface 55a of the secondary moving cam 55 having a large rotating radius is moved to the secondary moving driven surface 47 for the insertion direction. Abut. When the operating lever 28 is further rotated from this position, the stepped portion of the cam portion 53 is formed to be larger than the stepped portion of the insertion direction driven surface. The secondary moving driven surface 47 for insertion direction is pushed by the pressing curved surface 55a of the secondary moving cam 55 to switch the slider 27 away from the surface 46 (FIG. 9D).
[0052]
Thus, the cam portion 53 is constituted by the initial motion cam 54 and the secondary motion cam 55 in which the distance between the rotation axis center and the pressing curved surface is different, and the distance between the rotation axis center and the pressing curved surface is small. By bringing the slider 27 into contact with the cam 54 in order, it is possible to secure a longer slide amount than when the cam portion 53 is formed of a single cam.
[0053]
Then, when the operation lever 28 is rotated to a position parallel to the slider 27 (FIG. 9E), the slider 27 stops at an advanced position where the pressing plate portion 41 is inserted into the plate-shaped electric wire insertion portion 23. To do.
[0054]
In this state, the flexible plate-shaped electric wire 21 is pressed in the direction of the contact portions 35a, 38a of the contact by the pressing plate portion 41 of the slider 27 inserted into the gap of the plate-shaped electric wire insertion portion 23, and the elastic contact piece portion 35, 38 is bent, and the conductive pattern of the flexible plate-shaped electric wire 21 and the contact portions 35a, 38a are elastically contacted with a predetermined contact pressure, and good electrical connection is made. Since the pressing plate portion 41 is in close contact, the flexible plate-shaped electric wire 21 does not come out carelessly even if a force in the pulling direction is applied.
[0055]
And in order to cancel | release said state and pull out the flexible plate-shaped electric wire 21, if the operation lever 28 is rotated to the front side and it returns to the state shown to Fig.9 (a), the flexible plate-shaped electric wire 21 will be small. It can be easily pulled out from the plate-shaped electric wire insertion portion 23 by force.
[0056]
In the above-described embodiment, the slider 27 is driven only by the initial motion cam 54 with respect to the operation in the withdrawal direction, but the slider 27 is driven only by the secondary motion cam 55 instead of the initial motion cam 54. Also good.
[0057]
Further, in the above-described embodiment, the relief recess 45 is provided on the front side of the driven recess 43, that is, the edge of the slider 27 in the exit direction, and the secondary motion is performed in a series of operations in the exit direction. The example in which the cam 55 is not brought into contact with the slider 27 has been described. However, the front side of the escape recess 45, that is, the side edge of the slider 27 in the exit direction is used as a secondary driven surface for the exit direction. In the operation in the direction, the primary cam 54 is brought into contact with the exit direction driven surface 44 and the slider is pressed, and then the flat portion on the opposite side of the pressing curved surface 55a of the secondary motion cam 55 is pulled out in the secondary direction. The slider 27 may be sequentially driven by contacting the driven surface (the front side edge of the relief recess).
[0058]
【The invention's effect】
As described above, the connector for connecting a flexible plate-shaped electric wire according to the present invention can take a sufficient amount of sliding of the slider even if it is downsized, and the contact area between the pressing surface portion of the slider and the flexible plate-shaped electric wire is increased. Therefore, the contact and the flexible plate-shaped electric wire can be held in contact with each other with a sufficient contact pressure, and the flexible plate-shaped electric wire is not accidentally pulled out.
[0059]
Further, by providing a confirmation window on the slider, the connection state between the contact and the printed wiring board can be easily confirmed, and the reliability can be further improved.
[0060]
Further, the slider is inserted into the plate-shaped electric wire insertion portion along the flexible plate-shaped electric wire, and the retaining protrusion formed in the side edge of the flexible plate-shaped electric wire is engaged with the side surface of the substrate. Since the flexible plate-like electric wire is difficult to be removed, a suitable connection state can be maintained.
[Brief description of the drawings]
FIG. 1A is a plan view showing an example of an embodiment of a flexible plate-like wire connecting connector according to the present invention, and FIG. 1B is a side view thereof.
2A is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line BB in a state in which the operation lever is rotated in the insertion direction.
FIG. 3 is a plan view showing an example of a flexible plate-shaped electric wire.
4A is a plan view showing the housing in FIG. 1, FIG. 4B is a front view thereof, and FIG. 4C is a rear view thereof.
5A is a side view showing one contact in FIG. 1, and FIG. 5B is a side view showing the other contact.
6A is a plan view showing the slider, and FIG. 6B is a longitudinal sectional view thereof.
7A is a plan view showing the operating lever, FIG. 7B is a bottom view thereof, and FIG. 7C is a side view thereof.
FIG. 8 is an explanatory diagram showing a relationship between the cam portion and the slider when the operation lever is rotated in the pull-out direction.
FIG. 9 is an explanatory diagram showing the relationship between the cam portion and the slider when the operating lever is rotated in the insertion direction.
FIG. 10 is an exploded perspective view showing an example of a conventional flexible plate-like wire connecting connector.
FIG. 11 is a plan view showing an example of the same printed wiring board.
[Explanation of symbols]
20 Flexible plate-shaped electric wire connector 21 Flexible plate-shaped electric wire 22 Retaining recess 23 Plate-shaped electric wire insertion portion 24 Housing 25, 26 Contact 27 Slider 28 Operation lever 29 Front side contact insertion groove 30 Rear side contact insertion groove 31 Guide frame 32 Slide protrusion 33 Slide support groove 34 Mounting piece 35 Elastic contact piece portion 36 Fixed piece portion 37 Support piece portion 38 Elastic contact piece portion 39 Support piece portion 40 Terminal piece portion 41 Press plate portion 42 Slide arm portion 43 Driven recess portion 44 Followed surface 45 Relief recess 46 Initial driven follower surface 47 Secondary driven follower surface 48 Confirmation window 49 Locking projection 50 Operating portion 51 Rotating arm portion 52 Rotating shaft 53 Cam portion 54 Initially moving cam 55 Secondary moving cam

Claims (4)

A housing having a plate-like electric wire insertion portion into which a terminal portion of the flexible plate-like electric wire to be connected is inserted;
A plurality of contacts connected to the printed wiring board, having an elastic contact portion protruding into the plate-like electric wire insertion portion,
A slider that can be freely inserted into and removed from the plate-like electric wire insertion portion, and elastically contacts the terminal portion of the flexible plate-like electric wire with the elastic contact portion of the contact by being inserted into the plate-like electric wire insertion portion,
An operation lever rotatably supported by the housing;
The operating lever includes a cam portion that contacts a driven portion provided on the slider, and the cam portion presses the driven portion by rotating the operating lever, so that the slider In the connector for connecting a flexible plate-shaped electric wire, which is configured to advance and retreat between the position inserted into the wire-shaped electric wire insertion portion and the position pulled out from the plate-shaped electric wire insertion portion,
The cam portion includes a plurality of cams having different distances from the rotation axis center of the operation lever. By rotating the operation lever, the cams sequentially contact corresponding portions of the driven portion. A connector for connecting a flexible plate-like electric wire, characterized in that the sliders are sequentially operated in contact with each other. Each cam has a pressing curved surface, each pressing curved surface is arranged so as to form a step, and the slider is a driven portion in which a plurality of driven surfaces with which the respective cams are respectively contacted are arranged stepwise. The flexible plate according to claim 1, wherein the cams corresponding to the respective driven surfaces of the slider are sequentially brought into contact with each driven surface of the slider by rotating the operation lever, so that the slider is operated sequentially. -Shaped wire connection connector. 3. The connector for connecting a flexible plate-shaped electric wire according to claim 1 or 2, further comprising a confirmation window for visually confirming the contact fixed to the printed wiring board when the slider is in a position where it is pulled out from the plate-shaped electric wire insertion portion. . The slider is inserted into the plate-shaped electric wire insertion portion along the flexible plate-shaped electric wire, and the retaining protrusion formed in the side edge portion of the flexible plate-shaped electric wire is engaged with the side surface of the plate-shaped electric wire. The connector for flexible plate-shaped electric wire connection according to claim 1, 2 or 3.

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