JP2886915B2 - Ribbon cable pitch conversion mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a ribbon cable pitch conversion mechanism that changes the pitch between wires of a cable in which many wires are arranged in parallel on one plane.

(Prior Art) As shown in FIG. 4, a ribbon cable 1 is formed by joining a plurality of wires in a parallel and flat state. When attaching such a ribbon cable 1 to a connector or the like, it is necessary to separate the wires 2 at the cable tip 1a from each other and further widen the pitch of each wire 2 to a size suitable for attachment. It is necessary to convert the pitch b of the wire 2 into a predetermined wire pitch c. That is, after a slit for cutting off each wire 2 is formed in the tip 1a of the ribbon cable 1, a step of expanding the pitch b of the wire 2 is provided, and the pitch conversion of the wire 2 is performed using a pitch conversion mechanism. Is given.

An apparatus for performing such pitch conversion is disclosed in
2. Description of the Related Art As in a ribbon cable processing apparatus disclosed in Japanese Patent Application Laid-Open No. 62-168357, there is a ribbon cable processing apparatus provided with comb-shaped alignment blades arranged at regular intervals. The tip 10c of this alignment blade 10
The respective cutting edges are arranged at a pitch corresponding to the original wire pitch b of the cable 1 described above, and since each of these blades is inclined and extended rearward, the rear end side 10d has a predetermined pitch c. Each blade 10a, 10b is aligned. Therefore, as shown in FIG. 5, the alignment blade 10 having such a structure has different shapes of the blades 10a and 10b, and the center blade 10a has a linear shape, but the blades 10b at both ends are inclined inward. have.

(Problem to be Solved by the Invention) Since such an alignment blade 10 is complicated, there is a disadvantage that manufacturing processing is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ribbon cable pitch conversion mechanism which can solve such a drawback and can be easily manufactured.

(Means for Solving the Problems) A pitch conversion mechanism for a ribbon cable according to the present invention is a pitch conversion mechanism for converting a pitch of a plurality of wires arranged in a line on a plane into a predetermined pitch. A plurality of frames independently held, a template in which a plurality of grooves are formed, and the frames slide on the grooves, and sliding means for mutually moving the frames and the template. Is formed at the pitch of the wire and the pitch at the other end is formed at the predetermined pitch.

(Embodiment) An embodiment of a ribbon cable pitch conversion mechanism of the present invention will be described below with reference to the drawings.

The ribbon cable 1 for which the pitch conversion is performed by the pitch conversion mechanism of the present invention, as described with reference to FIG.
A plurality of wires 2 are joined in parallel and flat.

In the ribbon cable 1, the wire pitch b of the cable body is 1 mm, and the wire tip 1a is converted to a predetermined pitch c for connecting to a connector or the like, in this example, 2 mm. In order to perform such a pitch conversion, first, each wire 2 at the distal end portion 1a is separated by slitting, and a pitch as shown below is arranged in a state where the wire 2 of the slit ribbon cable distal end portion 1a is aligned. The pitch conversion is performed using a conversion mechanism.

The conversion mechanism 20 of the reference example shown in FIG.
Have a plurality of blades 21 corresponding to the number of arrangements of the wires 2. These blades 21 are arranged in an isosceles triangular shape with the center of the center blade 21 a as a center and the ends of the blades are lowered toward both ends. Have been. Note that both the center blade 21a and both ends 21b are linear, and the pitch c 'of the blades 21 is always constant, which is 2 mm, which is the same as the predetermined pitch c of the wire.

When the pitch conversion of the ribbon cable 1 is performed using such a blade 21, the blade 21a is relatively moved in the direction of arrow A as shown in FIG. 1B, and the center of the horizontally positioned ribbon cable tip 1a. The wire 2a, 2b enters the slit portion of the wire 2a, 2b to open the gap between the wires 2a, 2b to the same pitch as the blade pitch c ', and converts the pitch between the wires 2a, 2b into a pitch c (2 mm). When the blade 21 is further inserted into the cable tip portion 1a (arrow A), the blades 21b at both ends sequentially enter the slits of the wires 2e at both ends, as shown in FIG. 1C, and change the pitch of the outer wires 2e. The blade is opened to the size of the pitch c ', and the pitch of the wires 2e at both ends is also converted to a predetermined pitch c (2 mm).

Such a blade 21 is less likely to be broken because the shape of the blade 21 has less thin portions compared to the conventional alignment blade.

Further, such a pitch conversion of the ribbon cable end 1a can also be performed by a mechanism shown in FIG. 2A. The pitch conversion mechanism 30 according to the present invention shown in FIG.
A pair of frames 31, 31 sandwiching the ribbon cable tip 1a from above and below, and frames above and below these frames 31, 31.
Templates 32, 32 are provided so as to sandwich 31, 31 therebetween. A notch having a substantially semicircular cross section is formed in the holding portion of the wire 2 of the top member 31a according to the cross sectional shape of the wire 2.

Each frame member 31 is provided on the frame facing surface of the template 32.
A plurality of groove portions 33 having a substantially semicircular cross section capable of fitting the arc-shaped protruding portion a are formed. As shown in FIG. 2B, the grooves 33 are arranged at the same pitch as the original wire pitch b (1 mm) on the front side (F) in the wire insertion direction as shown in FIG. 2B. Pitch c
The grooves 33 are arranged at the same pitch as that of (2 mm) with an interval therebetween.

In the groove 33, the tops 31, 31 supported by the guide shaft 35 so as to be slidable in the lateral direction are fitted and disposed. Therefore, as shown in FIG. 2A and FIG. 2C as viewed from the front of FIG. 2A, the template 32 and the pair of tops 31, 31 are not slid in the direction of arrow B when the cable tip 1a is clamped. 2B, the top member 31a moves backward in the groove 33 as shown in FIG. 2B, and the interval between the top members 31a is changed from the original wire pitch b (1 mm) to a predetermined pitch c ( 2mm). Therefore, the pitch of the wire 2 is also fixed to the wire pitch b (1 m
m) is converted to a predetermined pitch c (2 mm).

Further, the pitch conversion of the ribbon cable by the further different mechanism 40 according to the reference example is also possible.

The mechanism 40 shown in FIG. 3A includes a pair of rollers 41, 41,
A groove 42 is formed on the side surface of the roller 41. The groove 42 has a substantially semicircular cross section in which the wire 2 can be fitted, and is in front of the wire holding portion.
43, the pitch of each groove 42 is the ribbon cable end 1a.
Are arranged at the same pitch as the original wire pitch b (1 mm), and the distance between the grooves 42 increases toward the rear of the roller rotation direction (arrow D), and a predetermined pitch c (2 mm)
These rollers are arranged at the same pitch as
The roller 41 can be rotated in the direction of arrow D with the leading end 1a of the ribbon cable sandwiched between the rollers 41.
Are supported (not shown). As shown in FIG. 3B, the cable tip 1a is sandwiched between the rollers 41, 41, and the groove 4
By holding the wire 2 in the inside 2 and rotating the rollers 41, 41, the cable tip 1a is relatively moved, so that the wire 2 moves from the wire pitch b (1 mm) to the predetermined pitch c (2 mm) along the groove 42. ).

The grooves 33 and 42 in the second and third embodiments are provided on both sides of a pair of templates 32 for holding the top member 31a or a pair of rollers 41 for holding the wire 2. If it is possible to slide the wire 31a or the wire 2 along the grooves 33, 42, a pair of templates 3
2, 32 or a pair of rollers 41, 41 may be formed on the template 32 or the roller 41 on one side.

(Effects of the Invention) Since the ribbon cable pitch conversion mechanism of the present invention has the above-described structure, it is not necessary to form a blade having a complicated shape as in the above-described conventional example, and therefore, the ribbon cable pitch can be easily formed. A member for performing conversion can be manufactured, which is excellent in mass productivity.

In the mechanism having these shapes, the thickness of the conventional pitch conversion mechanism can be increased, and the possibility of breakage is reduced and the durability is improved.

[Brief description of the drawings]

1A is a front view of a pitch conversion mechanism of a wire cable according to a reference example, FIG. 1B is a front view showing one process of operation of the pitch conversion mechanism of the reference example, and FIG. 1C is a view of the pitch conversion mechanism of the reference example. 2A is a perspective view of an embodiment of the present invention, FIG. 2B is a partial plan view of the embodiment, and FIG. 2C is an operation diagram of the pitch conversion mechanism of the embodiment. FIG. 2D is a front view showing one process of the operation of the pitch conversion mechanism of the embodiment, FIG. 3A is a perspective view of a different reference example, and FIG. 3B is a reference view of FIG. 3A. FIG. 4 is a plan view of an example of a ribbon cable, and FIG. 5 is a front view of a conventional example. 1 Ribbon cable 2 Wire 30 Pitch conversion mechanism 21a Center blade 21b Blades 21 at both ends 21 Blade 31 Frame 32 Template 33 33 Groove 41 roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H01R 43/00-43/01 H01R 43/28 H01R 9/07 H01B 7/08 H01B 13/00 525

Claims (1)

(57) [Claims] 1. A pitch conversion mechanism for converting a pitch of a plurality of wires arranged in one line on a plane into a predetermined pitch, wherein a plurality of pieces each independently holding each wire and a plurality of grooves are provided. A template formed and sliding the top on the groove; and sliding means for moving the top and the template relative to each other, wherein the pitch of one end of the groove is the pitch of the wire and the pitch of the other end is the predetermined pitch. A pitch conversion mechanism characterized by being formed at a pitch of.