JPH0845640A - Fpc connector taping method - Google Patents

Abstract

PURPOSE:To establish a taping method with which a connector for FPC, even after being subjected to a taping process, can be mounted in a correct position while the cover is in the opened condition and which excels in the easiness to perform works after the mounting. CONSTITUTION:A connector 30 for FPC is structured so that a cover 36 for mounting the FPC pinchedly is installed on a housing 32 in such a way as advancing and retreating in the vertical direction, wherein the cover 36 is protruded above the housing 32 and is accommodated an the open condition capable of admitting insertion of the FPC 25. The connector 30 is free from rattles in tone direction across the width of the housing even though the cover 36 is accommodated in open condition in a recess 17 provided in a carrier tape 16. In mounting, therefore, the connector 30 is transported by an automatic mounting machine always to the correct position on a printed circuit board 26, and a terminal part 56 and a holder piece are connected in place at all times by solders 28. After fixation to the printed circuit board 26, the FPC 25 is inserted to and connected with the connector 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, as a pretreatment for surface mounting an FPC connector on a printed circuit board or the like by an automatic mounting machine, stores the FPC connector in a carrier tape and coats it with a top cover tape 20 for taping. The present invention relates to a taping method of an FPC connector for achieving the above.

[0002]

2. Description of the Related Art As shown in FIG. 8, a conventional FPC connector 10 is provided with a cover 14 for holding a FPC 25 so as to be able to move forward and backward, and this FPC connector 10 is shown in FIG. 9 or FIG. As described above, it was housed in the carrier tape 16 and surface-mounted on the printed circuit board 26 or the like by the method shown in FIG.

More specifically, referring to FIG.
The FPC connector 10 has a recess 17 in the carrier tape 16.
One is stored in each, and the top cover tape 20 is placed on it.
Is attached, and so-called taping is performed and wound around the reel 11. From this reel 11 to carrier tape 1
While pulling out 6 and peeling off the top cover tape 20, the suction nozzle 33 of the automatic mounting machine 31 sucks one by one and conveys it to the position of the printed circuit board 26. This FPC
The connector 10 mechanically fixes the terminal soldering portion 23 of the contact 12 protruding from the housing 13 and the holding piece on the side surface at a predetermined position of the printed circuit board 26 with a solder fillet 28 and electrically connects them. To do. At this time, the cover 14 is still inserted in the FPC insertion hole 15 of the housing 13 as shown by the chain line in FIG.

When the FPC connector 10 is housed in the recess 17 of the carrier tape 16, the FPC connector 10 has been
As shown by the solid line in FIG. 8 and FIG. 9, the cover 14 is in a state of being completely inserted into the housing 13 (hereinafter, referred to as a closed state). Then, after mounting on the printed circuit board 26, the cover 14 is pulled out from the FPC insertion hole 15 as shown by a solid line so that the cover 14 is projected partway and the FPC 25 can be inserted (hereinafter referred to as an open state). In addition,
In the open state, although not shown, locking pieces are provided on both side portions of the cover 14, and the locking pieces are locked to the retainers on both sides of the housing 13, so that the cover 14 is attached to the housing 13.
It does not come off. In this state, the end portion of the FPC 25 is slid from the notch 18 of the cover 14 along the lower surface of the insertion plate portion 19 and further inserted into the housing 1
FP horizontally cut inward from the right end surface of FIG.
Insert into the C insertion hole 15.

After inserting the FPC 25, the cover 14
When press-fitted into the insertion hole 15, the insertion plate portion 19 of the cover 14 presses the FPC 25 from above to below against the elasticity of the spring-like pressure contact piece 21 and press-contacts the spring-like pressure contact piece 21 of the contact 12. At this time, the spring pressure contact piece 21 is slightly curved toward the gap 24 on the lower surface. The contact 12 is a spring-like pressure contact piece 21.
Since it is laterally U-shaped due to the fixing portion 22 and the fixing portion 22, the FPC 25 and the spring-like pressure contact piece 21 are held by the holding force.
And are connected. In addition, this type of surface mount connector 3
For the contact 34 in No. 0, a metal plate having a conductivity b and a spring property with a thickness b of about 0.25 mm is used, and d = 1.
About 20 to 40 are arranged at a pitch of 0 mm. Then, the width a = 0.
A 7 mm wiring pattern portion 29 is formed, and a solder layer 37 is screen-printed thereon. Therefore, the gap c between the wiring pattern portions 29 is only 0.3 mm. The thickness of the solder layer 37 is about 200 μm.

[0006]

[Problems to be Solved by the Invention] For surface mounting, F
When the PC connector 10 is pre-taped on the carrier tape 16 and in a closed state as shown in FIG. 9, the width d1 of the FPC connector 10 is constant, so that the tolerance of the internal width of the recess 17 is reduced. It can be minimized. Therefore, if the position of the suction nozzle 33 is controlled by the mounting holes formed on both sides of the carrier tape 16 at regular intervals, the suction nozzle 33 can be mounted at the correct position.

However, when the FPC connector 10 is taped and delivered, if the cover 14 is in the closed state, the cover 14 must be partially pulled out to be in the open state when the FPC 25 after mounting is assembled, so that workability is improved. Becomes worse. Further, not only the cover 14 and the housing 13 need to be retained in the closed state and the retainer in the open state, but when the cover 10 and the housing 13 are strongly pulled out in order to return from the closed state to the open state, the FPC connector 10 is extremely small. There is also a risk that the retaining portion may be destroyed.

Therefore, when taping the FPC connector 10 onto the carrier tape 16, as shown in FIG. 10, if the cover 14 is opened and the FPC 25 is left in a state in which it can be immediately inserted after mounting, The workability of connecting the FPC 25 is excellent, and there is no risk of breaking the retaining portion.

However, when the cover 14 is in the open state, the cover 14 rattles inside the carrier tape 16 and the width d2 may change during transportation. The position control of the nozzle 33 becomes inaccurate, and it cannot be mounted in the correct position. This is a serious problem in automatic implementation. Further, since the FPC connector 10 is often mounted on the end portion of the printed circuit board 26, the FPC connector 10 projects from the end portion of the printed circuit board 26 when the cover 14 is open.
However, there is a problem that it may be an obstacle when the screws are screwed, and the protruding cover 14 may come off and be lost.

According to the present invention, when the FPC connector is housed in the carrier tape, the FPC connector can be mounted in the correct position even when the cover is open, the workability after mounting is excellent, and the retaining portion may be damaged. The purpose is to provide a taping method that does not exist.

[0011]

According to the present invention, the FPC connector 30 is housed in the recesses 17 formed in the carrier tape 16 at a predetermined pitch, and then the recesses 17 are covered with the top cover tape 20 for surface mounting. In the taping method, the FPC connector 30 includes a housing 32.
And a plurality of rows of contacts 34 for FPC connection accommodated in the housing 32, and a cover 36 for wearing an FPC which is provided in a cover insertion hole 46 provided on the upper surface of the housing 32 so as to be vertically retractable. Equipped with this cover 3
6, a pressing plate portion 57 for pressing the plurality of rows of contacts 34 at the time of pushing down and a retaining piece 58 for retaining are integrally provided, and the cover 36 is fitted into the cover insertion hole 46 from above, and the FPC 25 is inserted. F in possible open state
The FPC connector taping method is characterized in that the PC connector 30 is housed in the carrier tape 16.

[0012]

Function: Top cover tape 20 of carrier tape 16
While peeling off, F with the suction nozzle 33 of the automatic mounting machine 31
The PC board 30 is sucked up one by one, and the printed circuit board 2
Transport to position 6. At this time, the FPC connector 3
0 is the carrier tape 16 when the cover 36 is open.
Although it is housed in the concave portion 17 of the cover 36, the cover 36 can move back and forth in the vertical direction, and there is no component that changes in the width direction.
There is no rattling in the width direction of the housing 32. Therefore, the suction nozzle 33 always sucks a fixed position of the FPC connector 30 with high accuracy and conveys it to the correct position of the printed board 26, and the terminal soldering portion 56 and the holding piece 38.
, Are always connected in place by the solder fillet 28. Since the cover 36 is in the open state, the FPC 25 is inserted into the FPC connector 30 and connected as it is.

[0013]

Embodiments of the present invention will be described below with reference to FIGS. In the present invention, the FPC connector 30 uses a housing 32 provided with a cover 36 for holding the FPC 25 in a vertically movable manner, and the cover 36 is stored in the carrier tape 16 in an open state. It is characterized by having done.

First, the structure of the FPC connector 30 used in the present invention will be described. This FPC connector 30 will be described.
Is composed of a housing 32, a plurality of rows of contacts 34 housed and held in the housing 32, a cover 36, and a holding piece 38. The contact 34 is
In the example of FIG. 2, the number of columns is 30, but in FIG. 3, the number of columns is 6 for the sake of illustration. However, the number of columns is not limited to the example shown.

On the front surface of the housing 32, an FPC insertion hole 40 for inserting the FPC 25 is horizontally opened substantially at the center, and a plurality of rows of contact locking holes 44 are provided in the lower portion. A stopper 45 is provided inside the FPC insertion hole 40. A contact insertion groove 47 communicating with the locking hole 44 is provided at the back of the housing 32, and a variation prevention groove 41 is formed at a lower portion of the contact insertion groove 47 at a right angle to the contact insertion groove 47. It is provided in.

A cover insertion hole 46 is provided on the upper surface of the housing 32 so as to be biased to one side.
The suction area of the upper surface of the suction nozzle 33 is made as large as possible. On both sides of the housing 32, an insertion hole 63 of the cover 36 and a stopper 62 are provided, and a holding piece 38 is provided. The holding piece 38 has a lower end portion for fixing to the printed circuit board 26. The housing 32 projects outward from the lower portions of both side surfaces.

The contact 34 comprises a leaf spring,
The spring-like pressure contact piece 48, the spring-like connecting piece 50, and the terminal portion 52 are punched out into a substantially S-shape, and the spring-like connecting piece 5 is formed.
The spring-like pressing piece 54 is projected upward at the end portion of 0, and the fixing piece 42 is projected at one end portion of the terminal portion 52.
A terminal soldering portion 56 is projected from the other end portion of 2. A contact portion 49 is provided so as to project upward at the tip of the spring-like pressure contact piece 48, and a pressing portion 55 is provided at the tip of the spring-like pressing piece 54.
Are laterally projected, and locking claws 43 are projected upward on the fixed piece 42.

A variation prevention piece 51 is formed on the upper portion near the terminal soldering portion 56. As shown in FIG. 6A, the variation prevention piece 51 is provided with the terminal soldering portion 5
It is possible to project the upper part integrally from around 6 and then bend it substantially horizontally. Further, as shown in FIG. 6B, it is also possible to integrally project upward from the vicinity of the terminal soldering portion 56 and then bulge laterally.

The plurality of contacts 34 formed as described above are inserted from the respective contact insertion grooves 47 side of the back surface of the housing 32, and the variation preventing pieces 51 are inserted.
The fixing piece 42 with the variation prevention groove 41.
Is press-fitted into the locking hole 44, locked by the locking claw 43, and fixed to the housing 32. In particular, when the variation prevention piece 51 is locked in the variation prevention groove 41, the lower surface of the terminal soldering portion 56 is correctly aligned with the lower surface of the housing 32, and when fixed to the printed circuit board 26, the variation preventing piece 51 does not rise from the wiring pattern portion 29. . Further, the terminal portion 52 is also in close contact with and supported by the inner bottom surface of the housing 32.

The cover 36 is integrally provided with a pressing plate portion 57 projecting downward in the longitudinal direction, and elastic locking pieces 58 are integrally provided downward on both sides of the pressing plate portion 57. A locking projection 60 that projects outward is integrally provided at the lower end of the locking piece 58. When the cover 36 is fitted into the housing 32 from above, the locking piece 58 passes through the insertion hole 63, and the locking projection 60 is located on the lower surface of the retaining member 62. At this time, since the pressing plate portion 57 of the cover 36 contacts the pressing portion 55 of the contact 34, the cover 36 remains open unless the cover 36 is strongly pressed.

Next, the carrier tape 16 for accommodating the FPC connector 30 will be described. The case where the carrier tape 16 is an embossed carrier tape will be described. The carrier tape 16 is made of a plastic material such as polypropylene, polystyrene, or vinyl chloride, and mounting holes 27 are formed on both side edges at a predetermined pitch. The recess 17 is formed in synchronization with the mounting hole 27. The width and the length of the recess 17 are set within the allowable error so that the housing 32 of the FPC connector 30 can be housed. Further, the terminal escape recesses 35 are formed, and if necessary, the suction nozzle escape recesses 3 are formed.
9 is formed. The depth of the carrier tape 16 allows the cover 36 to be stored in the open state.

The recess 17 of the carrier tape 16
Then, the FPC connectors 30 are housed one by one with the covers 36 facing upward, and the top cover tape 20 is covered by welding, adhesion or the like so that the FPC connectors 30 can be peeled off from a predetermined peeling value at the time of mounting. This is wound around the reel 11 and conveyed.

The carrier tape 16 has square hole punch holes formed in a square hole punch carrier tape, a bottom cover tape is attached to the bottom surface thereof, the FPC connector 30 is housed therein, and then the top cover tape 20 is attached. It may be a so-called square hole punch carrier type taping.

Next, in surface mounting, as in FIG. 7, the carrier tape 16 is pulled out from the reel 11 and the top cover tape 20 is peeled off, while the suction nozzles 33 of the automatic mounting machine 31 suck the FPC connectors 30 one by one. Then, it is conveyed to the position of the printed circuit board 26.

At this time, the FPC connector 30 has the recess 17 of the carrier tape 16 when the cover 36 is open.
Even if the housing 32 is housed in the housing 32, there is no rattling in the width direction of the housing 32. Therefore, the suction nozzle 33 always causes FP
A certain position of the C connector 30 is accurately adsorbed and conveyed to the correct position of the printed circuit board 26, and the terminal soldering portion 56 and the holding piece 38 are always connected to a predetermined position by the solder fillet 28.

Next, the F fixed to the printed circuit board 26
The operation of inserting and connecting the FPC 25 into the PC connector 30 will be described. Since the cover 36 is previously pulled out upward from the cover insertion hole 46 and the lower surface of the pressing plate portion 57 is only in light contact with the pressing portion 55, the contact portion 49 of the contact 34 inserts the FPC 25 into the FPC insertion hole 40. However, it is in a non-contact position.

In such a state, the FPC insertion hole 4
0 until the tip of the FPC 25 contacts the stopper 45. At this time, the FPC 25 can be inserted into the FPC insertion hole 40 without contacting the contact portion 49. That is, no insertion force (Zero Insertio
The FPC 25 can be inserted at (n Force).

Then, when the cover 36 is pressed downward in the cover insertion hole 46, the pressing plate portion 57 displaces the spring-like pressing piece 54 of the contact 34 outward. Then, the spring-like press contact piece 48 is displaced upward by the leaf spring elasticity of the contact 34 and presses against the contact portion (or the printed wiring surface) of the FPC 25. That is, when the cover 36 is press-fitted, the contact 34 and the FPC 25 are brought into pressure contact with each other to be in a connected state. The locking piece 58 of the cover 36 is provided in the insertion hole 6
Although it moves to the lower part of 3 and the locked state with the retainer 62 is released, the side surface of the pressing plate portion 57 contacts the pressing portion 55 of the spring-like pressing piece 54 and is pressed laterally by the leaf spring elasticity. The cover 36 does not come out upward.

In the above-described embodiment, the non-insertion force type, that is, the spring-like pressure contact piece 48 of the contact 34 is formed so as not to contact the FPC 25 in the FPC insertion hole 40 when the cover 36 is not inserted. However, the present invention is not limited to this, and a spring-shaped press contact piece 21 of the contact formed so as to lightly contact the FPC in the FPC insertion hole when the cover is not inserted can also be used.

In the above embodiment, the connector 30 for FPC is used.
However, the present invention is not limited to this, and a flexible flat cable (FFC) is used.
Of course, the connector for can also be used.

[0031]

【The invention's effect】

(1) Since the cover 36 of the FPC connector 30 can be moved up and down, and the cover 36 is accommodated in the carrier tape 16 in an open state, the width of the housing 32 is constant. The difference can be minimized, so that the FPC connector 30 can be mounted in the correct position on the printed circuit board 26.

(2) Since the cover 36 was stored in the carrier tape 16 in the open state when the taping of the FPC connector 30 was delivered, after the FPC connector 30 was mounted, the FPC 25 was opened without the need to open the cover 36. It can be inserted and connected, and has excellent workability in connecting the FPC 25. Further, even if the FPC connector 30 is miniaturized, the cover 36 does not need to be in an open state, so that the retaining portion is not damaged or damaged.

(3) Cover 36 of FPC connector 30
Since it can be moved up and down, even if the height of the cover 36 changes during transportation or the like, it does not change in the width direction and can be always mounted in the correct position.

(4) Even when the FPC connector 30 is mounted on the end portion of the printed circuit board 26, the cover 36 does not protrude from the end portion of the printed circuit board 26, which is an obstacle when screwing the printed circuit board 26. Moreover, the protruding cover 36 will not come off and be lost.

[Brief description of drawings]

FIG. 1 is a front view, partially cut away, showing a state in which an FPC connector 30 is housed in a carrier tape 16 for explaining an embodiment of a taping method for an FPC connector according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an exploded perspective view of an FPC connector 30 used in the present invention.

FIG. 4 is a cross-sectional view in which an open state and a closed state of a cover 36 of the FPC connector 30 used in the present invention are combined.

FIG. 5 is a cross-sectional view of a state where the FPC connector 30 used in the present invention is attached to the printed board 26.

FIG. 6 is a view showing a mounting state of a variation prevention piece 51 of the FPC connector 30 used in the present invention, and FIGS.
[Fig. 3] is a partially enlarged view showing different examples.

FIG. 7 is an explanatory diagram of surface mounting by taping an electronic component.

FIG. 8 is a cross-sectional view of a conventional FPC connector 10.

FIG. 9 is a sectional view when embossing carrier taping is performed with the cover 14 of the conventional FPC connector 10 closed.

FIG. 10 is a cross-sectional view when embossing carrier taping is performed with the cover 14 of the conventional FPC connector 10 in an open state.

[Explanation of symbols]

10 ... FPC connector, 11 ... Reel, 12 ... Contact, 13 ... Housing, 14 ... Cover, 15 ... FPC
Insertion hole, 16 ... Carrier tape, 17 ... Recessed portion, 18 ... Notch, 19 ... Inserted plate portion, 20 ... Top cover tape, 2
DESCRIPTION OF SYMBOLS 1 ... Spring-shaped press contact piece, 22 ... Fixed part, 23 ... Terminal soldering part, 24 ... Gap, 25 ... FPC, 26 ... Printed circuit board,
27 ... Mounting hole, 28 ... Solder fillet, 29 ... Wiring pattern part, 30 ... FPC connector, 31 ... Automatic mounting machine,
32 ... Housing, 33 ... Suction nozzle, 34 ... Contact, 35 ... Terminal escape recess, 36 ... Cover, 38 ... Holding piece, 39 ... Suction nozzle escape recess, 40 ... FPC insertion hole,
41 ... variation prevention groove, 42 ... fixing piece, 43 ... locking claw,
44 ... Locking hole, 45 ... Stopper, 46 ... Cover insertion hole,
47 ... Contact insertion groove, 48 ... Spring-like pressure contact piece, 49 ...
Contact portion, 50 ... Spring-shaped connecting piece, 51 ... Variation preventing piece,
52 ... Terminal portion, 54 ... Spring-like pressing piece, 55 ... Pressing portion, 5
6 ... Terminal soldering portion, 57 ... Pressing plate portion, 58 ... Locking piece,
60 ... Locking protrusions, 62 ... Retainers, 63 ... Insert holes.

Claims (3)

[Claims] 1. An FPC connector 30 is housed in recesses 17 formed in a carrier tape 16 at a predetermined pitch.
In the taping method for surface mounting, in which the recess 17 is covered with the top cover tape 20, the FPC connector 30 includes a housing 32 and a cover 36 that is worn by the FPC.
FPC2
5. A taping method for an FPC connector, characterized in that the FPC connector is stored in an open state in which it can be inserted. 2. After housing the FPC connector 30 in the recesses 17 formed in the carrier tape 16 at a predetermined pitch,
In the taping method for surface mounting in which the recess 17 is covered with the top cover tape 20, the FPC connector 30 includes a housing 32, a plurality of rows of contacts 34 for FPC connection, which are housed in the housing 32.
A cover 36 for wearing an FPC that is vertically movable in a cover insertion hole 46 provided on the upper surface of the housing 32.
The cover 36 is integrally provided with a pressing plate portion 57 that presses the plurality of rows of contacts 34 when the cover 36 is pressed down, and a retaining piece 58 for preventing the stopper 36 from coming out. A method for taping an FPC connector, characterized in that the FPC connector 30 is fitted into the carrier tape 16 in an open state into which the FPC 25 can be inserted. 3. The housing 32 is provided with a cover insertion hole 46 which is biased to one side so that the adsorption area of the upper surface thereof is as large as possible, and the housing 32 is provided substantially at the front center thereof.
The FPC insertion hole 40 is opened horizontally, and the carrier tape 16
The width and length of the concave portion 17 are the same as those of the FPC connector 30.
3. The taping method for an FPC connector according to claim 1, wherein the housing 32 is within a tolerance set so as to be housed, and the depth is such that the cover 36 can be housed in a state of protruding from the housing 32.