KR20100046626A - Endurance commission measurement-equipment of wire using wiring harness - Google Patents

Abstract

PURPOSE: A device for measuring of internal service life of wire for a wiring harness is provided to reduce manufacturing costs by securing the design quality and the lifetime improvement. CONSTITUTION: A device for measuring of internal service life of wire for a wiring harness comprises a support stand(10), a supporting board(11), a wire(20), and a pulley part and driving part(40). The bracket is installed in the upper side of the support stand. A rotary shaft(12) revolving at the constant angle repetition is included in inside a bracket. One side is fixed in one end of the rotary shaft. The pulley part is inserted in the rotary shaft.

Description

Endurance commission Measurement-equipment of Wire using Wiring harness}

The present invention relates to an apparatus for measuring the endurance life of a wire for a wiring harness, and more particularly, the endurance life of a wire according to the curvature and load for each type and line diameter by repeatedly winding and releasing wires of various sizes on pulley shafts of various sizes. And it can evaluate the disconnection position, thereby predicting the endurance life of the wire, thereby improving the reliability due to the evaluation of the consistency with the simulation result value, the arrangement of the wire constituting the wiring harness and various wire type measurement of the wire Through the endurance life measurement device of the wiring harness wire that the cost is greatly reduced by improving the endurance life and design quality.

In general, a wiring harness is a set of electrical wires that supply electric power to a vehicle body in an automobile. Such wiring harnesses include vehicle interior load wiring, control wiring, extension wiring associated with door structures, and air bags applied to air bags. wiring, engine room load-related wiring (engine wiring), trunk room load-related wiring (rear wiring) and the like.

Here, the endurance life of the wire used in various ways as described above may be affected by vibration in the engine itself, but this is extremely insignificant and the endurance life is reduced by external force.

In other words, the external force (repeated torsional load) acts as a factor that reduces the life of various wirings because the force exerted by the driving of each vehicle body is greater than the vibration force generated in the vehicle body.

If this external force occurs frequently over a long time, it will cause the wiring harness to be disconnected and, in severe cases, the vehicle must be scrapped, leading to the driver's safety.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

By repeatedly winding wires of various sizes on pulley shafts of various sizes, the endurance life and the disconnection position of wires can be evaluated according to the curvature and load according to the ship type and wire diameter. It is an object of the present invention to provide an apparatus for measuring the durability of a wire for a wiring harness, which is improved in reliability due to the evaluation of the conformity with.

In addition, through the measurement of the arrangement of the wire constituting the wiring harness and various wire types of the wire through the durability life improvement and design quality is ensured to provide a durable life measuring device of the wire for the wiring harness significantly reduced cost There is another purpose.

In order to achieve the above object, the present invention is a test apparatus for measuring the endurance life of the wiring harness wire installed in the vehicle,

A support;

A pedestal which is installed on an upper surface of the support and is provided with a rotating shaft which rotates repeatedly at an angle;

One side is fixedly installed at one end of the rotary shaft is transferred up and down by repeated rotation of the rotary shaft, the other side is additionally connected to the load according to the type of ship, and a plurality of lines by a predetermined interval spaced apart in the longitudinal direction of the rotary shaft A wire to be installed;

A pulley part fitted to the rotating shaft, the pulley shaft having a plurality of pulley shafts having different cylindrical circumferences (D) formed in multiple stages to wind and unwind the wire according to the rotation of the rotating shaft;

A driving unit connected to an end of the rotating shaft and repeatedly rotating the rotating shaft by a motor unit;

A control device that controls the driving and rotational speed (RPM) of the motor unit and is connected by a wire to recognize disconnection of the wire; It relates to a device for measuring the endurance life of the wiring harness wire comprising a.

As described above, the endurance life measurement device of the wire for the wiring harness of the present invention by winding the wire by wire type on the pulley shaft of various sizes, and repeatedly by repeating the wire type and wire diameter according to the curvature and load And it is possible to evaluate the disconnection position, thereby predicting the endurance life of the wire has the effect of improving the reliability due to the evaluation of the consistency with the simulation decision value.

In addition, through the measurement of the arrangement state of the wire constituting the wiring harness of the present invention and various wire types of the wire, the durability life and the design quality is secured, thereby reducing the cost significantly.

The present invention has the following features to achieve the above object.

The present invention is a test apparatus for measuring the endurance life of the wiring harness wire installed in the automobile,

A support;

A pedestal which is installed on an upper surface of the support and is provided with a rotating shaft which rotates repeatedly at an angle;

One side is fixedly installed at one end of the rotary shaft is transferred up and down by repeated rotation of the rotary shaft, the other side is additionally connected to the load according to the type of ship, and a plurality of lines by a predetermined interval spaced apart in the longitudinal direction of the rotary shaft A wire to be installed;

A pulley part fitted to the rotating shaft, the pulley shaft having a plurality of pulley shafts having different cylindrical circumferences (D) formed in multiple stages to wind and unwind the wire according to the rotation of the rotating shaft;

A driving unit connected to an end of the rotating shaft and repeatedly rotating the rotating shaft by a motor unit;

And a control device that controls the driving and rotational speed (RPM) of the motor unit and is connected by an electric wire to recognize disconnection of the wire.

The present invention having such a feature will be more clearly described through the preferred embodiment accordingly.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a perspective view showing an endurance life measurement device of the wiring harness wire according to an embodiment of the present invention, Figure 2 is an enlarged perspective view showing a pulley shaft according to an embodiment of the present invention, Figure 3 is Figure 4 is a schematic diagram showing a drive unit according to an embodiment, Figure 4 is a schematic diagram showing the transfer of the wire according to an embodiment of the present invention, Figure 5 is a schematic diagram showing the radius of the wire and pulley shaft according to an embodiment of the present invention; 6 is a graph showing the reliability of the wire according to an embodiment of the present invention, Figure 7 is a perspective view showing the endurance life measurement device of the wiring harness wire according to the second embodiment of the present invention, Figure 8 9 is a perspective view showing an endurance life measuring apparatus for a wiring harness wire according to a third embodiment of the present invention, and FIG. 9 shows a strain gauge according to the fourth embodiment of the present invention. Nancy is a perspective view.

As shown in FIG. 1, the endurance life measuring apparatus of the wiring harness wire of the present invention includes a support 10 and a wire 20 for measuring the endurance life of the wiring harness wire 20 installed in an automobile. ), A pulley part, a drive part 40, a control device 50, and a chamber (not shown).

The support 10 is formed in a rectangular plate shape, the pedestal 11 of the "┏┓" shape is installed on the upper surface, the rotating shaft 12 is horizontally supported on the inner upper end of the pedestal 11 is fixed Rotate repeatedly at an angle. At this time, the rotation angle of the rotary shaft 12 is repeatedly rotated within 180 degrees, the pulley shaft 30 fitted to the rotary shaft 12 is also repeatedly rotated within 180 degrees.

Here, the terminal device 15 is formed to protrude so that the wire 20 is connected to one end of the outer circumferential end (top side) of the rotary shaft 12 so that the wire 20 can be in contact with the wire. 15 is formed long in the longitudinal direction of the rotation shaft (12).

In addition, the guide base 13 is rotated at the inner lower end of the pedestal 11 so as not to be separated or shaken when it is moved up and down in accordance with the additional wire 20 installed at the end of the wire 20. And a plurality of through holes 14 are formed at one end of the guide table 13 so that a plurality of weights 21 penetrate one by one.

The wire 20 is to be used in the wiring harness, and according to the present invention, it is divided into various types of wire, and is connected to the end of each wire 20 by measuring the weight 21 corresponding to the load per line type.

Here, the wire 20 is fixed to one side connected to the terminal device 15 is transported up and down by repetitive rotation of the rotary shaft 12, to the terminal device 15 so that electricity is supplied to the wire 20 The wire is connected to one fixed side, the interconnection is connected to the terminal device (15).

As shown in FIG. 2, the pulley portion is provided with a plurality of pulley shafts 30 having different cylindrical circumferences D and fitted to the rotating shaft 12, and the pulley shaft 30 is attached to the rotating shaft 12. Coupled in a multi-stage form, the wire 20 is installed according to the line type along the cylinder circumference (D), or as shown in Figure 7 of the second embodiment, by using one pulley shaft 30 to the rotary shaft 12 In accordance with the cylindrical circumference (D), one can be inserted into the rotary shaft 12, respectively.

Here, the pulley shaft 30 is fitted to the rotary shaft 12, in which the insertion hole 31 in the longitudinal direction at one end of the pulley shaft 30 so as not to interfere with the terminal device 15 of the rotary shaft 12 Is formed. In other words, when the pulley shaft 30 is fitted to the rotary shaft 12 through one side, the terminal device 15 of the rotary shaft 12 is inserted into the insertion hole 31 of the pulley shaft 30 to the outside. It is protruding.

In addition, a wire 20 connected to the rotation shaft 12 and extended downward in contact with the outer circumference of the pulley shaft 30 is contacted, and as shown in FIG. 4, the wire is repeatedly rotated by the rotation shaft 12. (20) is wound around the outer periphery of the pulley shaft 30, and the wire 20 is repeatedly twisted (ε) repeatedly to cause disconnection.

Hereinafter, the torsion equation of the wire 20 will be described with reference to FIG. 5.

ε = ΔL / L [L = 2πR2, ΔL = 2πR1-2πR2]

  = (2πR1-2πR2) / 2πR2

  = R1 / R2-1

  = {(R + d) / (R + d / 2)}-1

ε: torsion, ΔL: wire extension amount (mm), L: wire center length (mm)

Here, the torsion ε is determined by the wiring harness W / H or the bending radius R of the pulley shaft and the wire diameter d.

As such, the graph table of FIG. 6 is implemented by using Equation 1 and FIG. 5.

As shown in FIGS. 1 and 3, the drive unit 40 includes a motor unit 41, an eccentric rotating plate 42, a link 43, and an idle gear 44 to repeatedly rotate the rotating shaft 12. ) And the pulley gear 45. Here, the motor unit 41 is installed on the inner lower end of the pedestal 11 to transmit the rotational force by the shaft.

In addition, the eccentric rotating plate 42 is connected and rotated by the shaft of the motor unit 41, and is simultaneously supported by the shaft of the outer surface of the pedestal 11, and an eccentric groove on one end surface of the eccentric rotating plate 42. 42a is formed. At this time, it is attached to the eccentric rotating plate 42 or installed on the outer surface of the pedestal 11 for supporting the eccentric rotating plate 42 to count the number of revolutions (RPM) of the eccentric rotating plate 42 to control the count signal ( The count sensor 60 for transmitting to 50 is further installed.

In addition, one side of the link 43 is inserted into the eccentric groove 42a of the eccentric rotating plate 42 and serves to convert the rotational movement of the eccentric rotating plate 42 into a linear movement.

In addition, the idle gear 44 is connected to the other side of the link 43 is rotated by receiving a linear motion, is supported by the shaft of the outer surface of the pedestal (11).

In addition, the pulley gear 45 is integrally formed at the end of the rotation shaft of the pedestal 11 while being in contact with the outer periphery of the idle gear 44 to transmit the rotational force to the rotation shaft (12).

Here, the drive unit 40, as shown in Fig. 8 of the third embodiment, the motor unit 41, the eccentric rotating plate 42 and the link 43 has a similar structure, but the idle gear 44 or the pulley gear 45 A plurality of rollers 46, which are not a gear type, are supported by the shaft of the outer surface of the pedestal 11, and are connected to each other by a band 47 or a chain to transmit rotational force.

The controller 50 controls the driving and rotational speed (RPM) of the motor unit 41 and connects the motor and the plurality of wires with wires so as to recognize disconnection of the wires.

Here, the control device 50 is connected to the plurality of wires 20 and the wires are displayed on the outer surface so as to recognize whether the wire 20 is disconnected so that the user can inspect the appearance.

The chamber (not shown) is provided with an endurance life measuring device of the wire 20 therein to measure the endurance life of the wire 20 under the same environmental conditions (cycles according to temperature and humidity changes) as in the interior of the car. More objective and specific life expectancy can be predicted. In this case, the control device 50 is installed outside the chamber, and the control device 50 is connected only to the endurance life measuring device of the wire 20 in the chamber by a wire.

The temperature of the chamber gives conditions of high temperature (90 degrees), room temperature (23 degrees ± 3 degrees) and low temperature (-40 degrees).

As shown in FIG. 9, in the fourth embodiment of the present invention, the strain gauge 70 is separately installed to recognize the strain value at one end of the wire 20.

As such, in the present invention, when the wire 20 of the wiring harness installed in the actual vehicle is repeatedly bent to give a twist to the wire 20, and thus, a plurality of wires (by type) are disconnected, respectively. It is displayed on the control device 50 to predict the endurance life for each wire (20).

At this time, the system is stopped only when a plurality of wires 20 installed in the measuring device are all disconnected.

1 is a perspective view showing an endurance life measurement device of the wiring harness wire according to an embodiment of the present invention,

2 is an enlarged perspective view showing a pulley shaft according to an embodiment of the present invention;

3 is a schematic view showing a driving unit according to an embodiment of the present invention,

Figure 4 is a schematic diagram showing the transfer of the wire according to an embodiment of the present invention,

Figure 5 is a schematic diagram showing the radius of the wire and pulley shaft in accordance with an embodiment of the present invention,

6 is a graph showing the reliability of the wire according to an embodiment of the present invention,

7 is a perspective view showing an endurance life measuring device of the wiring harness wire according to the second embodiment of the present invention,

8 is a perspective view showing an endurance life measuring device of the wiring harness wire according to the third embodiment of the present invention,

9 is a perspective view showing a strain gauge according to a fourth embodiment of the present invention.

Description of the Related Art

10: support 11: stand

12: axis of rotation 13: guide

14: through hole 15: terminal device

20: wire 21: weight

30 pulley shaft 31 insertion hole

40: drive portion 41: motor portion

42: eccentric rotating plate 43: link

44: idle gear 45: pulley gear

46: roller 47: band, chain

50: control device 60: count sensor

70: strain gauge

Claims (9)

In the test apparatus for measuring the endurance life of the wiring harness wire 20 installed in an automobile, A support 10; A pedestal 11 installed on an upper surface of the support 10 and having a rotating shaft 12 repeatedly rotating at a predetermined angle therein; One side is fixedly installed at one end of the rotary shaft 12 and is transferred up and down by repetitive rotation of the rotary shaft 12, the other side is connected to the weight 21, the load is different according to the type, the rotary shaft 12 A plurality of wires 20 installed at each line type by being spaced apart at predetermined intervals in the longitudinal direction of the line; A pulley part fitted to the rotating shaft 12 and having a plurality of pulley shafts 30 having different cylindrical circumferences D formed in multiple stages to wind and unwind the wire 20 according to the rotation of the rotating shaft 12. ; A driving unit 40 connected to an end of the rotating shaft 12 to repeatedly rotate the rotating shaft 12 by the motor 41; A control device 50 which controls the driving and rotational speed (RPM) of the motor unit 41 and is connected by a wire to recognize a disconnection of the wire 20; Endurance life measurement device for a wiring harness wire, characterized in that comprising a. The method of claim 1, Inside the pedestal 11, the guide stand 13 is installed so that the weight 21, which is conveyed up and down in accordance with the wire 20, does not leave or shake in place, and the weight is provided on one end surface of the guide stand 13. Apparatus for measuring the service life of the wiring harness wire, characterized in that a plurality of through holes 14 are formed so that the 21 is penetrated. The method of claim 1, One end of the outer periphery of the rotary shaft 12 is connected to the wire 20 while the terminal device 15 is formed so as to contact the wire protruding endurance life of the wiring harness, characterized in that the wire. The method of claim 1, The pulley shaft 30 is formed in one cylindrical circumference (D) in a cylindrical shape, and measuring the endurance life of the wire for wiring harness, characterized in that it can also be used to replace each of the various cylindrical circumference (D). The method of claim 1, wherein the drive unit 40, A motor unit 41 installed at an inner lower end of the pedestal 11; An eccentric rotating plate 42 connected to the shaft of the motor unit 41 while being supported and rotated on an outer surface of the pedestal 11 and having an eccentric groove 42a formed at one end thereof; A link 43 which is inserted into an eccentric groove 42a of the eccentric rotating plate 42 and converts the rotational movement of the eccentric rotating plate 42 into a linear motion; An idle gear 44 connected to the other side of the link 43 to be rotated by a linear movement and supported by an outer surface of the pedestal 11; A pulley gear 45 which is integrally formed and rotated at an end portion of the rotation shaft 12 of the pedestal 11 while being in contact with the outer circumference of the idle gear 44; Endurance life measurement device for a wiring harness wire, characterized in that comprising a. The method of claim 5, It is attached to the eccentric rotating plate 42 or installed on the outer surface of the pedestal 11 for supporting the eccentric rotating plate 42 to count the number of revolutions (RPM) of the eccentric rotating plate 42 to control the count signal 50 Endurance life measurement device of the wiring harness wire, characterized in that the count sensor 60 to be transmitted to further installed. The method of claim 1, One end of the wire 20, the strain gauge 70 is installed separately to recognize the strain value, the endurance life measurement device of the wiring harness wire. The method of claim 1, Rotation angle of the rotating shaft 12 is the endurance life measurement device of the wiring harness wire, characterized in that the rotation repeatedly within 180 degrees. The method of claim 1, The endurance life measuring device of the wire 20 can be installed and measured inside the chamber to implement a cycle according to temperature (high temperature, room temperature, low temperature) and humidity change, and only the control device 50 outside the chamber Endurance life measuring device for a wiring harness, characterized in that the installation.

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