JPH062920U - Cable trimming amount display tool - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a trimming amount display tool for a cable for efficiently performing trimming processing. [Structure] A multi-core cable 4 composed of a plurality of cable cores 7 is formed with a split portion 4a of the cable core 7 and a cut line 5 is formed in the split portion 4a, and based on a transmission delay time of each cable core 7. A trimming amount display tool for obtaining the trimming amount of each cable core 7 with respect to the cutting line 5 and displaying the trimming amount on each cable core 7 is provided on the base plate 3 provided with the reference line 1 on the reference line. The multi-core cable 4 is fixed such that 1 and the cutting line 5 coincide with each other, and the cable core 7 of the loosening portion 4a is movably supported, and the scale showing the trimming amount on the base plate 3 with the reference line 1 interposed therebetween. 2 is formed, the trimming amount of each cable core 7 is read from the scale 2, and the knob 9 is engaged with the cable core 7 at the read position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable trimming amount display tool for displaying a trimming amount of a multi-core cable including a plurality of cable cores.

[0002]

[Prior art]

 When wiring an electronic circuit such as a computer or an IC tester using a multi-core cable composed of a plurality of cable cores, for example, a flat cable, variations in the delay time of each cable core may cause a malfunction. Therefore, trimming (fine adjustment of length) may be performed for each cable to suppress this variation.

This is because the scale is abutted in series (in the + direction and − direction) on the base plate and a tape such as a gum tape is attached and fixed, and the contact point of the scale serves as a reference point, and the cable is attached to the reference point. By aligning the provided trimming reference lines and visually confirming the trimming amount measured in advance, the cable core is shifted along the length of the scale and cut.

Here, the measurement of the trimming amount will be described.

A measuring tool (connector) is attached to the end of each cable core in advance, and T. D. The connector is connected to an R (Time Domain Reflectometer) measuring instrument and the T.R. D. A pulse signal is input from the R measuring device and the delay time between each cable core is measured. The measured data is processed by the computer and the trimming data is printed.

The trimming process is performed while looking at the printed data sheet.

[0007]

[Problems to be Solved by the Invention] However, since the trimming data is visually confirmed in the above-described method, misreading is likely to occur, and a scale must be attached each time trimming processing is performed. Therefore, it takes a considerable amount of time per cable, which is inefficient.

Therefore, an object of the present invention is to solve the above problems and to provide a cable trimming amount display tool for efficiently performing trimming processing.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a cable core loosening portion in a cable composed of a plurality of cable cores, and forms a cutting line for cutting in the loosening portion, while each cable core is formed. The trimming amount of each cable core is calculated for the cutting line based on the transmission delay time of the cable trimming amount display tool for displaying the trimming amount on each cable core. The cable is fixed so that its reference line and the above cutting line coincide with each other, and the cable core of the exposed portion is movably supported, while the trimming amount is placed on the base plate with the reference line sandwiched. Is formed, the trimming amount of each cable core is read from the scale, and the knob is engaged with the cable core at the read position.

[0010]

[Action]

 According to the above configuration, since the scale is provided on the base plate in advance, the work of attaching the scale is omitted, and the trimming amount of each cable core is read from the scale indicating the trimming amount, and the cable at the read position is read. Now that you've engaged the knobs on the core, you can see the exact amount of trimming for each cable core.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an external perspective view of an embodiment of a cable trimming amount display device of the present invention, FIG. 2 is an external perspective view of the base plate shown in FIG. 1, and FIG. 3 is shown in FIG. It is an enlarged view of the "Knob".

In FIG. 1, the trimming amount display tool includes a base plate 1 provided with a reference line 1 and scales 2 before and after the reference line 1, a reference line 1 provided on the base plate 3, and a multi-core cable 4. The fixing hook 6 for fixing the non-separated portion 4b of the multi-core cable 4 and the cable core 7 of the separated portion 4a are slightly moved so that the cutting line 5 provided in the exposed portion 4a coincides. A hook 8 that can be supported and a “knob” 9 that detachably engages with the cable core 7 at the position read from the scale 2 according to the amount to be trimmed are provided.

The multi-core cable 4 is a flat cable composed of a plurality of cable cores 7, and the ends thereof form a state in which the cable cores 7 are exposed and separated, that is, a loosened portion 4a. A cutting line 5 is marked on the portion of the loosened portion 4a to be cut with, for example, an oil-based ink pen.

As shown in FIG. 2, one reference line 1 is drawn from the one end (the upper end of the drawing) to the other end (the lower end of the drawing) at approximately the center of the base plate 3, A scale 2 is provided on one end side of the reference line 1 by 1 mm in both directions.

The fixing hook 6 fixed to the base plate 3 with the fixing bolt 10 has a recess 6 a formed on the lower side and having a thickness substantially equal to the thickness of the multi-core cable 4. When the fixing bolt 6 is tightened, the multi-core cable 6 is tightened. The non-separated portion 4b of the cable 4 is fixed on the base plate 3.

Since the recess 8a provided on the lower side of the hook 8 is slightly larger than the recess 6a of the fixed hook 6 with respect to the fixed hook 6, even if the fixing bolt 11 is tightened, the cable core 7 is supported while slightly sagging. It is supposed to do. This is because if the multicore cable 4 is fixed in close contact with the base plate 3, it will not be possible to move the “knob” 9 described later onto the cable core 7.

The fixing hooks 6 and 8 are detachably fixed (supported) on the base plate 3 by the fixing bolts 10 and 11 in this embodiment, but the present invention is not limited to this. Other means such as a lever having a hinge at one end and a stopper at the other end to hold down the multi-core cable 4 may be used as long as it can be detachably fixed (supported).

As shown in FIG. 3, the “knob” 9 has an approximately U-shaped cross section and is movable on the cable core 7, and an engaging member 9 a on the engaging member 9 a which is perpendicular to the moving direction. It is composed of a handle 9b provided in different directions and a convex portion 9c formed inside the engaging member 9a and engaging with the cable core, and transparent plastic is used as the material. The size of the inner wall of the engaging member 9a is substantially equal to the outer diameter of the cable core. The thickness t (height from the inner wall of the engaging member) t of the convex portion 9c is about 0.5 mm, and the height (inner width) h is about 2 to 3 mm.

The usage of the embodiment will be described below.

FIG. 4 is an enlarged view when the “knob” shown in FIG. 3 is attached to each cable core 7, and FIG. 5 moves the “knob” shown in FIG. 3 based on the data value of the trimming amount. It is a figure which shows the state which was put.

The multicore cable 4 is provided with the loosening part 4a and the cutting line 5 at the cutting portion of the loosening part 4a, and the multicore cable 4 is placed on the base plate 3 and cut with the reference line 1. The non-separated portion 4b is fixed by the fixing hook 6 and the fixing bolt 10 so that the line 5 and the line 5 coincide with each other, and the loose portion 4a is movably supported by the hook 8 and the fixing bolt 11.

The end faces of the engaging members 9a of the “knobs” 9 are aligned so as to coincide with the cutting line 5 of the cable core 7 (FIG. 4).

Based on the above-mentioned trimming data, the trimming amount of each cable core 7 is read from the scale 2 of each cable core 7, and the “knob” 9 is moved to the cable core 7 at the read position. As a result, the trimming amount of the cable cores 7 is displayed, and the delay time of each cable core 7 can be made equal by cutting off either end of the “knob” 9 of each cable core 7.

Next, the operation of the embodiment will be described.

Since the scale 2 is provided on the base plate 3 in advance, the step of attaching the scale is omitted, and the trimming amount of each cable core 7 is read from the scale 2 indicating the trimming amount, and the cable at the read position is read. Since the “knob” 9 is engaged with the core 7, the accurate trimming amount is displayed for each cable core 7.

In the above, according to the present embodiment, the multi-core cable 4 is fixed on the base plate 3 provided with the reference line 1 so that the reference line 1 and the cutting line 5 coincide with each other, and the separation thereof is performed. The cable core 7 of the portion 4a is movably supported, while the scale 2 indicating the trimming amount is formed on the base plate 3 with the reference line 1 interposed therebetween, and the trimming amount of each cable core 7 is read from the scale 2. At the same time, the "knob" 9 is engaged with the cable core 7 at the read position, so that the trimming process can be performed efficiently.

[0028]

[Effect of device]

 In short, according to the present invention, the following excellent effects are exhibited.

(1) An accurate trimming amount can be displayed by matching the handle of the “knob” with the scale.

(2) Since the trimming amount is displayed by moving the “knob” along the cable core, the trimming work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of a cable trimming amount display device of the present invention.

2 is an external perspective view of the base plate shown in FIG. 1. FIG.

FIG. 3 is an enlarged view of a “knob” shown in FIG.

FIG. 4 is an enlarged view when the “knob” shown in FIG. 3 is attached to each cable core.

FIG. 5 is a diagram showing a state where the “knob” shown in FIG. 3 is moved based on the data value of the trimming amount.

[Explanation of symbols]

 1 reference line 2 scale 3 base plate 4 multi-core cable 4a loose part 4b non-separate part 5 cutting line 6 fixed hook 7 cable core 8 hook 9 knob 9a engaging member 9b handle 9c convex part 10, 11 fixing bolt

Claims (1)

[Scope of utility model registration request] 1. A cable core having a plurality of cable cores is provided with a loose portion of the cable core, and a cutting line for cutting is formed at the loose portion, and based on the transmission delay time of each cable core. The trimming amount of each cable core is calculated with respect to the cutting line, and the trimming amount display tool for displaying the trimming amount on each cable core displays the reference line and the above-mentioned reference line on the base plate provided with the reference line. While fixing the cable so that the cutting line matches, movably support the cable core of the loose part,
On the other hand, it is characterized in that a scale indicating the trimming amount is formed on the base plate across the reference line, the trimming amount of each cable core is read from the scale, and the knob is engaged with the cable core at the read position. A cable trimming amount display tool.