JPH11252737A - Folding and bending jig for flat cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat-cable folding and bending jig which improves the workability in a post process. effectively preventing the generation of the variations in folding flat cables. SOLUTION: A folding jig 10 is provided with a receiving jig body 11 and a pushing-in jig body 12. The receiving jig body 11 is provided with a housing section 15 whose upper side is open, a protruded bending guide streak 16 projecting upward, a pair of cable putting-on stands 17 arranged to be ascendable freely along the sidewalls 15b the housing section 15, a coil spring which pushes up and returns each cable putting-on stand 17 to the upside position of the housing section 15 and a positioning section which positions, and puts a flat cable on over the upsides of both cable putting-on stands. The pushing-in jig body 12 is provided with a pair of pushing-in legs 20 to be pushed respectively into both sides of the protruded bending guide streak 16, and a cable pushing-out board 23 supported so as to be ascendable and descendable freely between a pair of pushing-in legs 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable bending jig for bending a flexible flat cable such as a flat cable, a flexible printed circuit board, and a ribbon electric wire.

[0002]

2. Description of the Related Art Conventionally, there has been a connection method using a flexible flat cable such as a flat cable for connecting circuits between circuit boards such as a printed wiring board.
As shown in FIG.
a is peeled off to expose each conductor portion 1b, and each of the circuit boards 3, 4 arranged at a predetermined interval in a predetermined curved state.
The conductors 1b are inserted into the through holes 3a, 4a, and the respective circuits of the circuit boards 3, 4 are connected to each other by soldering the conductors 1b.

At this time, in order to bend the flat cable 1 into a predetermined curved state, conventionally, as shown in FIG. 9, the outer peripheral surfaces of pipes 6 and 7 having a diameter of about 10 mm are circular. Using two cables, sandwiching the central portion in the longitudinal direction of the flat cable 1 between the pipes 6 and 7 and manually bending the cable as shown by the imaginary line, thereby forming a predetermined width S as shown in FIG. A method of bending and forming the curved flat cable 1 having been employed has been adopted.

[0004]

However, according to the conventional flat cable 1 bending method, since the flat cable 1 is directly bent by human power, the flat cable 1 may be bent due to factors such as force applied. Figure 11
As shown in FIG. 12 and FIG.
As shown in FIG. 3, variations such as misalignment of bending positions are likely to occur, and it is difficult to smoothly insert the circuit boards 3 and 4 into the through holes 3a and 4a in the subsequent process, which hinders the work in the subsequent process. There was a problem that occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a flat cable bending jig which effectively prevents variation in bending of a flat cable and improves workability in a post-process. I do.

[0006]

A technical means for solving the above-mentioned problems is a flat cable bending jig for bending a flexible flat cable, wherein the bending jig comprises: A receiving housing specific and a push-in specific, wherein the receiving specific is a rectangular housing part which is open upward,
Bent guide ridges provided in an upwardly projecting shape at the center in the width direction of the housing portion, and are respectively disposed on both sides of the bend guide ridge portions, and are arranged so as to be able to move up and down along the side wall portions of the housing portion. The pair of cable mounting bases, a return urging body that pushes up and returns each cable mounting base to an upper position of the housing part, and a longitudinal center position of the flat cable above the bending guide ridge. And a positioning portion for positioning and placing the flat cable over the two cable mounting tables to be positioned, and the push-in jig, specifically, has a predetermined interval for pushing operation on both sides of the bending guide ridge. A pair of pushing legs arranged in parallel,
And a cable pushing plate supported so as to be able to move up and down between the pair of pushing legs.

[0007] The positioning portion may be constituted by a side wall around the housing.

Further, the upper end of the bending guide ridge may be formed in a curved shape bulging upward.

Further, a structure may be provided in which a return biasing member is provided for pushing up and returning the cable push plate to an upper position between the pair of pushing legs.

Further, a guide portion for guiding the pair of pushing legs along the pushing direction may be provided on a side wall portion of the housing portion.

[0011] The positioning portion may be constituted by concave step portions formed on the upper surface side of the pair of cable mounting tables, respectively.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 5, a bending jig 10 has a flat cable 1 mounted in a flat state. It is composed of a receiving treatment specific 11 which is set in a standing shape, and a pushing treatment concrete 12 which pushes and bends the flat cable 1.

The receiving member 11 has a rectangular parallelepiped housing portion 15 which is opened upward. A bending guide ridge portion 16 is formed at the center in the width direction of the housing portion 15 so as to project upward from the bottom plate portion 15a. The bending guide ridge 16 is provided over the entire length of the housing 15 in the depth direction. And the bending guide ridge 1
The upper end of 6 has a curved shape that bulges upward, that is, has a configuration that bulges in a semicircular cross section as shown in FIGS.

The side wall portions 15b of the housing portion 15 located on both sides of the bending guide ridge portion 16 are arranged to face each other and have a so-called U-shape in plan view. On both sides of the bending guide ridge 16, rectangular plate-shaped cable mounting tables 17 which are guided to be able to move up and down along the inner surface of each side wall 15b are arranged.

A coil spring 18 as a return urging member is interposed between the lower surface side of the pair of cable mounting tables 17 and the upper surface side of the bottom plate portion 15a.
If the pushing force is released after the pushing operation of the coil spring 7 downward, the elastic urging force accumulated in each coil spring 18 causes
Each cable mounting table 17 is configured to be pushed up and returned to the upper position of the housing section 15.

As shown in FIG. 1 and FIG. 2, the upper position where each cable mounting table 17 is pushed up and returned is such that the upper surface height of each cable mounting table 17 is slightly lower than the upper edge of each side wall 15b. Positioned and bent guide ridge 1
6 is configured to be located slightly above the upper end. The upper position of the cable mounting table 17 may be determined by a method of appropriately setting the spring length of the coil spring 18 or the side wall portion 1.
Positioning can be performed by a contact structure in which the stopper portion provided on the 5b side and the cable mounting table 17 side can freely contact and separate.

The distance between the inner surfaces of the opposed side walls 15b is set to a distance corresponding to the length in the length direction of the flat cable 1 to be bent. The inner surface side distance corresponding to the depth direction of the strip portion 16 is configured to be a distance that matches the width direction length of the flat cable 1 to be bent, and is configured here on the inner surface side of the opposed side wall portions 15b. Rectangular shape
The configuration conforms to the rectangular shape of the flat cable 1 to be bent.

Therefore, as shown in FIG.
When the flat cable 1 is positioned and mounted on each cable mounting table 17 as a fitting shape on the inner surface side of 5b, the longitudinal center position of the flat cable 1 is positioned above the bending guide ridge 16. The positioning portion of the flat cable 1 is configured on the inner surface side of each of the side wall portions 15b opposed to each other.

The push-in device 12 includes a pair of rectangular plate-shaped push legs 20 arranged in parallel with a predetermined interval L, and a rectangular top plate portion connecting the upper ends of the push legs 20 to each other. 21
And a fitting hole 2 formed in a central portion of the top plate portion 21.
A support column 22 is provided so that 1a is inserted vertically.

A rectangular plate-like cable push plate 23 having a width M slightly smaller than the predetermined distance L and having the same length M in the depth direction between the pushing legs 20 is provided between the pushing legs 20.
The cable push-out plate 23 is provided with support columns 22.
It is attached and fixed to the lower end of.

Further, a disc-shaped extruding operation section 24 is attached and fixed to the upper end of the support column 22, and the support column 22 located between the extrusion operation section 24 and the upper surface of the top plate section 21 has A coil spring 25 as a return urging member is fitted in a compressed state in a wrapped manner. Accordingly, the coil spring 25 constantly urges the pushing operation portion 24 upward, and here,
The cable push-out plate 23 is held at an upper position between the pushing legs 20.

Then, by pushing down the pushing operation portion 24 against the elastic force of the coil spring 25, the cable pushing plate 23 is moved down along the inner surfaces of both pushing legs 20 to release the pushing force. Thus, the spring is pushed up to the upper position and returned by the elastic force stored in the coil spring 25.

The length M in the depth direction of each pushing leg 20
Is slightly shorter than the distance between the inner surfaces of the side walls 15b facing each other in the depth direction, and the predetermined distance L between the inner surfaces of the two pushing legs 20 is, as shown in FIG. When the bent portion 1 is in a bent state, the distance between the conductor portions 1b at both ends becomes a predetermined width N.

The present embodiment is configured as described above. When the flat cable 1 is bent using the bending jig 10, first, as shown in FIG. Stripped flat cable 1 of predetermined length
Is mounted on both cable mounting tables 17 in a fitting state in both side wall portions 15b. In this case, each side wall portion 15b
As a result, the flat cable 1 is positioned, so that the longitudinal center position of the flat cable 1 is located above the bending guide ridge 16.

Next, each of the pushing leg portions 20 of the pushing and holding concrete 12 will be described.
Is pushed into the housing section 15 from both sides of the bending guide ridge section 16 under the guidance of the side wall sections 15 b, the respective cable mounting tables 17 are operated to descend against the urging forces of the respective coil springs 18. The flat cable 1 is also lowered with the lowering of each cable mounting table 17, and the longitudinal center position of the flat cable 1 contacts the upper end of the bending guide ridge 16,
Further, when each of the cable mounting tables 17 is lowered, the flat cable 1 is bent along the curved surface of the upper end of the bending guide ridge 16, and as shown in FIG. The lowering of each pushing leg 20 is stopped at the time of contact with the upper surface.

Thereafter, when the push-in device 12 is raised and each of the pushing legs 20 is pulled out from the receiving device 11 side, the elastic recovery force of the flat cable 1 itself as shown in FIG. A state in which the flat cable 1 is held in a desired bent state between the two pushing legs 20 can be obtained.
At this time, each cable mounting table 17 that has been lowered is pushed up and returned to the upper position, which is the initial position, by the elastic force accumulated in each coil spring 18.

Next, the flat cable 1 in the bent state
Is mounted on each of the circuit boards 3 and 4 arranged at a predetermined interval, as in the related art, first, if the pushing operation unit 24 is pushed by a desired length, the pushing operation unit 24 is pressed between the two pushing legs 20. When the located cable push-out plate 23 is moved downward, as shown in FIG.
It is formed to protrude downward from the lower edge of O by an appropriate length.

After that, when the pushing force on the pushing operation unit 24 is released, the cable pushing plate 23 is pushed by the elastic force stored in the coil spring 25 so that the pushing leg portion 20 at the initial position is pushed.
It is pushed up to the upper position between and returned.

At this time, the spread of the bent flat cable 1 at both ends is regulated by the inner surfaces of the two pushing legs 20, and the width between the two conductors 1b of the flat cable 1 is maintained at a predetermined width N. Have been.

In this state, the conductors 1b are inserted into the through holes 3a, 4a of the circuit boards 3, 4, and the conductors 1b are soldered or the like.
4 may be connected to each other.

The present embodiment is constructed as described above. If the flat cable 1 is placed at a predetermined position on the receiving concrete 11 in a positioning manner, and the pushing operation on the pushing concrete 12 is performed,
The flat cable 1 bent into a predetermined shape can be easily obtained. Here, the flat cable 1 is not affected by the skill of the operator at all.
Variations in the bending angle and positional deviations in the bending positions can be effectively prevented.

Further, since the work of inserting the circuit of each circuit board 3, 4 into each through hole 3a, 4a can be performed while holding the flat cable 1 in the bent state by the pair of pushing legs 20, the insertion work is smooth. Thus, workability in the post-process can be improved.

Furthermore, since the upper end of the bending guide ridge 16 is formed in a curved shape that bulges upward, the flat cable 1 is smoothly bent when it is bent, and the bent shape is stabilized. There is also an advantage.

Also, the elastic force of the coil spring 25
Since the cable push-out plate 23 is held at the upper position of the two pushing legs 20, there is an advantage that no trouble occurs when the flat cable 1 is attached to the circuit boards 3 and 4.

Further, each side wall portion 15 of the housing portion 15
Since the positioning part for positioning the flat cable 1 is constituted by b, there is no need to separately provide a positioning member, and there is an advantage that the structure can be simplified.

FIG. 6 shows a second embodiment, in which the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

That is, in the present embodiment, both ends in the depth direction of the pushing legs 20 are guided along the pushing direction on the inner surfaces of the housing portion 15 facing each other in the depth direction of the side walls 15b. A vertical guide groove 15c is formed as a guide portion.

In this case, the same effects as those of the first embodiment are obtained, and the pressing positions of the pressing legs 20 of the pressing device 12 are automatically adjusted by the guide grooves 15c. Workability at the time can be improved.

FIG. 7 shows a third embodiment, in which the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

That is, in the present embodiment, concave step portions 17a on which the flat cable 1 is placed in a positioning manner are formed on the upper surface side of the pair of cable mounting tables 17, respectively. Constitutes a positioning unit.

In this case, the same effects as in the first embodiment can be obtained. In addition, if a large number of cable mounting tables 17 having concave steps 17a of various lengths and widths are prepared and have a replaceable structure, it is possible to cope with bending of a plurality of types of flat cables 1 and versatility. There is also an advantage that the improvement can be achieved.

In each of the above embodiments, each of the pushing legs 2 is located on the inner surface of each of the side walls 15b facing in the depth direction.
Although the structure to guide when pushing 0 is shown,
A structure may be employed in which each pushing leg 20 is guided at the time of the pushing operation at each of the corners of the entering corners of the side walls 15b facing each other.

[0043]

As described above, according to the flat cable bending jig of the present invention, the receiving jig is specifically formed with a rectangular housing portion having an open top and an upwardly projecting central portion in the width direction of the housing portion. A pair of cable mounting tables, which are arranged on both sides of the bending guide ridge, respectively, and which are arranged to be able to move up and down along the side wall of the housing part; A return biasing body that pushes up and returns the mounting table to the upper position of the housing part,
A positioning portion for positioning the flat cable at a position in the longitudinal direction of the flat cable above the bending guide ridge and positioning and mounting the flat cable over both cable mounting tables; A pair of push leg portions arranged in parallel with a predetermined interval to be pushed on both sides of the guide ridge portion, respectively, and a cable push plate supported up and down between the pair of push leg portions are provided. The bending angle in the bending of the flat cable is stable, the occurrence of large and small variations in the bending angle and the occurrence of misalignment of the bending position can be effectively prevented, and the workability in the post-process can be improved. There are advantages.

Further, if the positioning portion is constituted by the side wall around the housing, there is an advantage that the structure can be simplified.

Further, if the upper end of the bending guide ridge is formed in a curved shape that bulges upward, there is an advantage that the bent shape of the flat cable is more stable.

Further, if a structure is provided in which a return biasing member is provided to push up and return the cable push-out plate to an upper position between the pair of pushing legs, the work in the subsequent process can be performed more smoothly. There is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is an explanatory view showing the same operation step.

FIG. 3 is an explanatory view showing the same operation step.

FIG. 4 is an explanatory view showing the same operation step.

FIG. 5 is an explanatory view showing the same operation step.

FIG. 6 is a plan view showing a concrete example of a receiving treatment according to the second embodiment.

FIG. 7 is a cross-sectional front view of a concrete example of a receiving treatment showing a third embodiment.

FIG. 8 is an explanatory view showing a connection step of a conventional example.

FIG. 9 is an explanatory diagram showing the bending operation.

FIG. 10 is a side view of the same.

FIG. 11 is a side view of the same.

FIG. 12 is a side view of the same.

FIG. 13 is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat cable 1a Covering part 1b Conductor part 3 Circuit board 4 Circuit board 10 Bending jig 11 Receiving concrete 12 Pushing concrete 15 Housing part 15a Bottom plate part 15b Side wall part 15c Guide groove 16 Bend guide ridge part 17 Cable mounting table 17a Recessed step 18 Coil spring 20 Pushing leg 23 Cable push-out plate 24 Push-out operation part 25 Coil spring

Claims (6)

[Claims] 1. A flat cable bending jig for bending a flexible flat cable, wherein the bending jig includes a receiving jig and a pushing jig. A rectangular housing part having an open top, a bending guide ridge provided upwardly projecting at a widthwise central part of the housing part, and a housing part disposed on both sides of the bending guide ridge, respectively; A pair of cable mounting tables arranged so as to be able to move up and down along the side wall of the
A return urging body for pushing up and returning each cable mounting table to the upper position of the housing part, and a flat cable with both longitudinal cables positioned at the center in the longitudinal direction of the flat cable above the bending guide ridge. And a positioning portion for positioning and mounting on the mounting table, wherein the pressing jig is specifically, a pair of pressing leg portions arranged in parallel with a predetermined interval to be pressed on both sides of the bending guide ridge portion, respectively. And a cable pushing plate supported between the pair of pushing legs so as to be vertically movable. 2. The flat cable bending jig according to claim 1, wherein the positioning portion is formed by a side wall around the housing portion. 3. The flat cable bending jig according to claim 1, wherein an upper end portion of the bending guide ridge is formed in a curved shape that bulges upward. 4. A flat urging body according to claim 1, further comprising a return biasing body for lifting and returning the cable push-out plate to an upper position between the pair of pushing legs. Jig for bending cable. 5. The housing according to claim 1, wherein a guide portion for guiding the pair of pushing legs along the pushing direction is provided on a side wall portion of the housing portion. Flat cable bending jig. 6. The flat cable bending jig according to claim 1, wherein the positioning portion is constituted by concave steps formed on upper surfaces of the pair of cable mounting tables, respectively.