JPH0338900Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is used in the process of forming wire harnesses, etc. to continuously and automatically process terminal crimped wires in which wires are cut to the required length and terminals are crimped. , when automatically inserting a coupler into the terminal crimped wire, etc.
This invention relates to an electric wire clamp jig (hereinafter simply referred to as a clamp jig) used to clamp electric wires and automatically transport them between processes.

"Prior Art" and "Problems to be Solved by the Invention" The above-mentioned conventional clamping jig clamps the electric wire between the knurled and jagged contact surfaces, and uses the frictional force caused by the pressure contact force. Many have a structure that maintains the clamping position of the wire.

The clamping jig with the above conventional structure can withstand a considerable amount of tensile force or torsional external force when harmful external tensile force or torsional force occurs on the clamped wire, but it is easily displaced by the external torsional force and loses its clamping posture. , process troubles may occur in the above-mentioned automatic processing.

Furthermore, in order to impart the above-mentioned tensile resistance,
Since it is necessary to apply a strong pressure force between the contact surfaces with the electric wires, the size of the clamping jig cannot be avoided due to its mechanism. In automatic processing equipment, there are drawbacks such as the pitch between the clamping jigs becoming wider and the overall size of the equipment increasing.

The purpose of the present invention is to provide a new clamping jig that overcomes the above-mentioned conventional difficulties.

``Means for Solving the Problems'' The present invention, which achieves the above objectives, is ``consisting of a pair of clamp members that are openable and closable and face each other, and on one side of the clamp members facing each other, a trapezoidal hooking protrusion is provided. At the same time, a clamping recess is provided on the opposite surface of the other side to engage with the convex part, and an electric wire is clamped between the clamping concave and convex part, and a bending clamp is formed along the three sides of the trapezoid. It consists of a structure that

"Operation" According to the clamp jig of the present invention having the above configuration,
An electric wire is clamped between a trapezoidal clamping convex part and a clamping recess that engages with the clamping convex part, and the electric wire is clamped in a bent shape along three sides of the trapezoid, so that it is physically clamped. The clamping performance is improved, and even if external tensile force or torsional force is generated on the clamped wire, the wire can be clamped stably without losing its posture.

Furthermore, with the improvement in clamping performance as described above, there is no need to apply an excessive clamping force between the clamping concave and convex portions, and there is an advantage that the clamping jig itself can be made smaller.

"Example" The structure and operation will be explained in detail below with reference to the example. In FIGS. 1 to 3 showing an embodiment thereof, the clamp jig of the present invention consists of a pair of clamp members 1A and 1B facing each other.
A and 1B have a lever shape that is long in the vertical direction, and the vertical middle is connected to the frame part 12 by the fulcrum pin 6.
are pivotally supported and are rotatable in mutually opposing directions.
The opposing surfaces of the heads of the clamp members 1A and 1B form a wire clamping portion for laterally clamping the electric wire 13, and the wire clamping portion of the clamp member 1A on one side has a cross-sectional shape. A clamping convex portion 2 having a symmetrical trapezoidal shape is vertically protruded, and the wire clamping portion of the clamp member 1B on the other side has a clamping concave portion that engages with the clamping convex portion 2. 3 is formed, and the electric wire 13 is clamped between the clamping protrusion 2 and the clamping recess 3.

A wedge body 9 that moves up and down is provided below the lower ends 7 and 8 of the clamp members 1A and 1B, and a clamp member 1 is provided in the opposing gap between the clamp members 1A and 1B above the fulcrum pin 6.
A spring body 10 is interposed to bias the heads of A and 1B in the direction of separation from each other, and the clamping convex portion 2 and the clamping recess 3 are opened by the bias of the spring body 10 when free. ing. Then, when the wedge body 9 is forcibly fitted into the opposing lower ends 7 and 8 by the operating force shown in _P1 , the clamp members 1A and 1B are forcibly rotated against the spring body 10, and the clamping convex portion 2 and The clamping recess 3 is arranged to clamp the electric wire 13 in close proximity. Note that when the wedge body 9 is lowered by the operating force _P2 shown in the figure, the clamping concavo-convex portions 3 and 2 are opened.

Further, on the left and right sides of the clamping convex part 2 and the clamping recess 3, line collecting parts 4A and 4B having V-shaped guide grooves opening forward are provided.
4B corrects the bending of the wire 13 and guides the wire 13 on the horizontal clamping line 1' when clamping the electric wire 13 by the clamping concave and convex portions 3 and 2, thereby achieving an accurate clamping action. The wire concentrators 4A' and 4B' on the clamp member 1A side and the wire concentrators 4A'' and 4B'' on the other side overlap each other when the clamp members 1A and 1B are closed. , the electric wires 13 are configured to be concentrated at the bottom of the guide groove.

Furthermore, the wire concentrator 4 of the clamp members 1A, 1B
On the sides of B' and 4B'', there is provided a straight section 5 in which linear clamping grooves 11 are formed opposite to each other on the clamping line 1'. The wire 13, which has been forcibly condensed by the wires 4B'', is clamped and held on the clamping line 1' to prevent the wire 13 from bending.

The clamping jig of the present invention as described above clamps the electric wire 13 between the trapezoidal clamping protrusion 2 and the clamping recess 3, and the electric wire 13 is bent and clamped along the three sides of the trapezoid. 13 is accurately clamped without losing its posture against the external force of tension or twisting generated during clamping. In particular, with respect to external torsional force generated on the electric wire 13, the centroid of the torsion is not in a straight line due to the bent clamping, so that the torsion resistance is improved and the clamping posture is stabilized.

Furthermore, since the wire concentrator 4 is provided in the above-described embodiment, the electric wire 13 is properly clamped on the clamping line 1', and the clamping effect of the clamping uneven parts 2 and 3 is made even more effective. be.

With the above-mentioned improvement in clamping performance, there is no need to press-fit the electric wire 13 excessively, and the clamp jig can be made smaller in structure, for example, the arrangement pitch 6 of the clamp jig can be narrowed. Therefore, there is an advantage that the entire device using the clamp jig can be made smaller.

``Effects of the invention'' As described above, the clamping jig of the present invention improves clamping performance and stably clamps the wire in the correct position. This has the effect of eliminating process troubles in the automatic insertion line for the coupler, improving the productivity of the wire processing, and also downsizing the equipment of the processing line.

[Brief explanation of drawings]

Figure 1: A perspective view showing a clamping jig according to an embodiment of the present invention, Figure 2: A cross-sectional view of the wire clamping part according to the embodiment in Figure 1, Figure 3: Wire clamping according to the embodiment in Figure 1. FIG. Main symbols, 1A, 1B...Clamp member, 1'
... Clamping line, 2... Clamping convex portion, 3... Clamping recess, 4A, 4B... Wire concentration portion, 5... Straight line portion, 9...
... Wedge body, 12... Frame body, 13... Electric wire.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a pair of clamp members facing each other so as to be openable and closable, one side of the clamp member is formed with a trapezoidal hooking protrusion, and the other side is provided with a trapezoidal hooking convex portion. A clamp for electric wires, characterized in that a clamping concave portion that engages with a clamping convex portion is provided, an electric wire is clamped between the clamping convex portion and the clamping concave portion, and the wire is bent and clamped along three sides of the trapezoid. jig. (2) The electric wire clamping jig as set forth in claim (1) of the utility model registration claim, which is provided with a wire concentrator having V-shaped grooves opening in opposite directions on the sides of the clamping protrusion and the clamping recess.