Device for checking the pressure resistance of a cable connected to a connector

Abstract

Disclosed is a device for checking withstand voltage of a connector coupling cable. The device includes: a pair of electrode boxes; and a control block configured to apply an activation signal to a test instrument outputting a preset high voltage according to an electrical state detected in each electrode box, each electrode box including: a housing with a portion of a front face thereof open; a conductive electrode plate installed in an inner front face of the housing in a manner rotatable about a top end thereof; and a detection unit installed inside the housing in a form having a predetermined gap from the electrode plate, for detecting whether the electrode plate is rotated due to a push to a lower portion of the electrode plate. The electrical state is an electrical state between both ends of the detection unit, and the preset high voltage is applied between the two electrode plates.

Description

TECHNICAL FIELD

[0001] The present invention relates to a device for checking the pressure resistance of a cable having a connector coupled to one end of the cable. BACKGROUND

[0002] Nowadays, many types of devices and apparatuses are used in people's daily life, work, leisure activities or medical activities. Most of these devices and apparatuses perform the intended operation or function based on the exchange of electrical signals between their components. In particular, large apparatuses, such as vehicles, communication apparatuses, medical apparatuses, etc., are interconnected between a large number of components with various types of cables to achieve electrical communication between the components.

[0003] Among many types of cables, a connector having a specific shape and structure as a terminal of an electric wire is connected in an electrically connected state at the end of the cable. The electric wire of the cable terminated with such a connector is electrically connected to a component on a board by engaging with a corresponding connector having a male or female coupling shape and structure provided on the board where the component is mounted. Thus, the electrical connection between the parts required to transmit and receive signals is easily achieved by the connector.

[0004] For such a simple electrical connection, the connector should be connected to the cable first. In this connector engagement work, a defective product can be generated, which can cause a problem when it is later applied to an actual apparatus.

[0005] Figure 1 An example of a connector coupling cable 1, which is generally used in large quantities, is shown. As shown in the drawing, the cable 1 includes: a plurality of cores made of a conductor 4 i (i = 1, 2, 3,...) wrapped with an insulator 3 i (i = 1, 2, 3,...); a shield 5 surrounding the cores; a sheath 2 to which a connector 6 is coupled to one end of the cable 1.

[0006] As Figure 1 shown, in order to connect the connector 6 to one end of the cable 1, first, the sheath 2 and the inner shield 5 need to be cut near the end (CP) of the cable 1. However, in this cutting operation, since the cutting strength is not properly adjusted or the inner strands are in a twisted state, etc., the cut portion of the shield 5 can be pushed into the cut groove of the insulator 3 when the cutting blade partially cuts the insulator 3 of the strands.

[0007] In this case, due to a short circuit between the shield 5 and the conductor (the insulating sub is cut off), or damage to the insulator for insulation, it can not be possible to guarantee sufficient impedance between the conductors. If a cable like this combined with a connector is installed in a device, when a surge voltage is applied to the cable, due to current flowing into the core conductor, it can cause the signal to be transmitted through the cable to not be transmitted normally, or damage the circuit of the component.

[0008] In order to detect this defect caused by the connector combination in advance, the withstand voltage of the connector-coupled cable is tested. As shown in Figure 1 , the withstand voltage test is to check whether the ground wire 5a made of the shield layer 5 and the conductor strand 4 of the core wire have sufficient insulation with respect to the cable 1 coupled to the connector 6. Using a test device as shown in Figure 2 , the withstand voltage of the connector-coupled cable is checked respectively.

[0009] Figure 2 The test device of the withstand voltage tester 10, a pair of electrode pads 11a, 11b, and a switch pedal 12, which output the high voltage required for the withstand voltage test. Using Figure 2 , the withstand voltage test of the test device is performed in the following procedure.

[0010] The operator holds the ground wire 5a and the conductor strand 4 of the connector-coupled cable 1 with both hands so that they come into contact with the electrode plate 111 of each electrode pad 11a, 11b, respectively (p11, p12). In this state, by stepping on the switch pedal 12 with one foot (p20), a test start signal is applied to the withstand voltage tester 10.

[0011] When the test start signal is applied, the withstand voltage tester 10 drives the output ports PO1 and PO2 to a preset high voltage for a set drive time. By detecting the amount of current between the two output ports PO1 and PO2 within the drive time, whether current flows between the two output ports PO1 and PO2 is checked, and the WVT displays the check result on the LEDs provided on the front surface.

[0012] When the LED showing no current is lit, the operator considers the connector-coupled cable 1 to be an acceptable product that satisfies the insulation between the shield 5 and the conductor strand 4, and when the other LED showing current flow is lit, it is considered to be a defective product that is insufficiently insulated.

[0013] However, the withstand voltage test of the connector-coupled cable using the test device of Figure 2 has a problem in that it cannot provide a sufficiently reliable test result. Since even if the operator starts the test by stepping on the switch pedal 12 without the ground wire 5a and the conductor strand 4 being in contact with the electrode plate 111, current cannot flow between the two electrode plates 111, the WVT 10 normally displays the test result of the cable.

[0014] Further, even if the contact state of the ground wire 5a and the conductor strand 4 with the electrode plate 111 is started by stepping the switch pedal 12 after the test, the contact state is not maintained for a certain time required for the withstand voltage test, and the WVT 10 normally displays the test result of the cable.

[0015] In the case where the same test is rapidly repeated by the operator on a large number of cables, an error can occur in the following test work: the switch pedal 12 must be stepped after confirming the contact of the ground wire, the conductor strand, and the electrode plate 111; the contact state must be maintained until the test result of the WVT 10 is displayed. Therefore, even if a test is performed in which the test conditions are not actually satisfied, there can be a cable in which the withstand voltage test result is determined to be acceptable, as described above.

[0016] Further, in the test work using the test device of Figure 2 Since the operator must use one foot and both hands for the withstand voltage test, fatigue is more easily felt than in other work using only both hands. When fatigue increases, workability decreases, and the number of cables that are normally processed through the test without observing an error state of the test conditions increases. SUMMARY

[0017] An object of the present application is to provide a device for checking the withstand voltage of a cable, enabling the withstand voltage test of a connector-coupled cable to be completed in a state in which the test conditions are satisfied.

[0018] Another object of the present application is to provide a device for checking the withstand voltage of a cable, enabling an operator to perform a withstand voltage test on a connector-coupled cable using only both hands.

[0019] Another object of the present application is to provide a device for checking the withstand voltage of a cable, which automatically records the history of the withstand voltage test of a connector-coupled cable.

[0020] Another object of the present application is to provide a device for checking the withstand voltage of a cable, which can prevent an operator from intentionally shirking in the withstand voltage test of a connector-coupled cable.

[0021] The scope of the present application is not necessarily limited to the explicit statements described above. Rather, the scope of the present application encompasses anything that achieves the effects that can be derived from the specific and illustrative explanations of the present application below.

[0022] According to one aspect of the present application, a first device for checking the pressure resistance of a cable includes a pair of electrode boxes, and a control block configured to apply an activation signal to a test instrument according to an electrical state detected in each of the electrode boxes, the test instrument driving an output port with a preset voltage. Each of the pair of electrode boxes includes a housing configured to have at least a portion of a front surface open, a conductive electrode plate rotatably mounted to an inner front surface of the housing around a top end thereof, and a detection unit mounted inside the housing in a form having a predetermined gap from the electrode plate, configured to detect a state in which the electrode plate rotates when a lower portion of the electrode plate is pushed inward. The electrical state is an electrical state between both ends of the detection unit, and the electrode plates of the pair of electrode boxes are electrically connected to the output port, respectively.

[0023] According to another aspect of the present application, a second device for checking the pressure resistance of a cable includes a pair of electrode boxes, each of which includes a housing configured to have at least a portion of a front surface open, a conductive movable plate rotatably mounted to an inner front surface of the housing around a top end thereof, and a static plate fixed to the inner front surface of the housing, coplanar with the movable plate by having a gap from a lower end of the movable plate. In the second device, a control block detects an electrical break or short between the movable plate and the static plate as an electrical state according to whether a conductive object is inserted into the gap. The movable plates or the static plates of the pair of electrode boxes are electrically connected to an output port, respectively.

[0024] In an embodiment according to the present application, a lower portion of the movable plate and an upper portion of the static plate of the second device are respectively bent into the housing to form curved surfaces.

[0025] According to another aspect of the present application, the second device further includes a first contact piece fixed to one side of the movable plate in electrical insulation from the movable plate, and a second contact piece provided at a point on an inner surface of a front support of the housing, facing the first contact piece. Also, signal lines for detecting contact between the first contact piece and the second contact piece are connected to the two contact pieces, respectively, and each of the signal lines is connected to a detection circuit included in the control block. In this embodiment, from the start of applying the activation signal until a predetermined time elapses, if a non-contact state between the two contact pieces detected from the signal lines is not maintained, the control block applies a reset signal to the test instrument.

[0026] In an embodiment according to the present application, the control block of the second device includes a detection circuit configured to apply a voltage to both ends of the movable plate and the static plate, respectively, to detect the electrical state, and a control unit configured to cut off an electrical connection within the detection circuit so that no current flows therein when a signal corresponding to a short between the movable plate and the static plate is detected from the detection circuit.

[0027] In an embodiment according to the present application, the structure of the housing of the second device allows the height of the static plate from the bottom of the housing to be adjusted.

[0028] In an embodiment according to the present application, from the time the start signal is applied until the predetermined time elapses, if the electrical state at the time the start signal is applied is not maintained, the control block of the first device applies a reset signal to the test instrument.

[0029] In an embodiment of the present application, at least a portion of the area on the electrode plate of the first device is configured as a slope formed with a shape that is more recessed towards the inside of the housing as its portion is closer to the center.

[0030] In an embodiment of the present application, an accessory part that faces the detection unit when rotating with the electrode plate is coupled on the electrode plate of the first device. In this embodiment, the electrical state between the two ends of the detection unit is changed by the physical contact of the accessory part or the non-contacting of the accessory part into the predetermined detection space.

[0031] In another embodiment according to the present application, when the electrode plate or the accessory part coupled with the electrode plate applies a force to the detection unit, the electrical state between the two ends of the detection unit changes.

[0032] In an embodiment according to the present application, the control block is configured to be connected to a specific line through which the test instrument sends a signal to show the test result depending on the output port driven with a predetermined voltage, and to receive the signal carried on the specific line. In this embodiment, the control block can control the lighting of a plurality of light source elements fixedly installed on one surface of the housing so that they are turned on differently depending on the signal carried on the specific line. In addition, a mechanical driving unit is included, which is installed on the input device of the computing device and can individually strike a plurality of keys provided on the input device. In this structure of the device, the control block can apply a driving signal to the mechanical driving unit so that it strikes different keys depending on the signal carried on the specific line.

[0033] The start signal is applied when the electrical states detected from the pair of electrode boxes become the same, respectively.

[0034] In an embodiment according to the present application, when the predetermined time elapses from the time the start signal is applied, the control block can apply a reset signal to the test instrument.

[0035] According to the present application described above, or according to at least one embodiment of the present application described in detail below with reference to the accompanying drawings, a device for testing the pressure resistance of a cable allows an operator to perform a pressure resistance test of a cable using only both hands. Therefore, the working fatigue of the operator is reduced, the test time is shortened, and thus the workability is greatly improved.

[0036] In one embodiment of the present invention, the test history of a large number of cables to be checked for pressure resistance is automatically recorded in the computing device, so that the management of the test work can be facilitated, the reliability of the test results can be improved, and the workability can be improved by analyzing the recorded work data.

[0037] Further, in the embodiments of the present invention, the test result is obtained only when the test condition is maintained for the time required for the cable pressure test, and the pressure test result is normally obtained only when the cable conducting portion is used. When these embodiments are applied, the quality of the cable pressure test is greatly improved. On the other hand, careless test work or the operator's negligence can be prevented in advance. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 An example of a common cable to which a connector is coupled is shown.

[0039] Figure 2 A conventional device for testing the pressure resistance of a connector-coupled cable is shown.

[0040] Figure 3 is a view showing components of a device for testing the pressure resistance of a connector-coupled cable according to an embodiment of the present invention.

[0041] Figure 4A is a view showing the inside of an electrode box partially cut away, constructed according to an embodiment of the present invention.

[0042] Figure 4B A detailed structure of a switch unit according to an embodiment of the present invention is shown, which is laid out inside an electrode box in the case where a contact piece of an electrode plate is in contact.

[0043] Figure 5A is a perspective view showing components for detecting whether an electrode plate is rotated, configured according to another embodiment of the present invention.

[0044] Figure 5B is a side view showing another mounting form of components for detecting whether an electrode plate is rotated, with respect to Figure 5A an embodiment of the present invention.

[0045] Figure 6 is a view showing the structure of a control block according to an embodiment of the present invention, and a mechanical driving unit and the connection relationship thereof.

[0046] Figure 7 is a view exemplarily showing a method of automatically recording pass / fail information as a test history with respect to a list of cables to be checked, according to an embodiment of the present invention.

[0047] Figure 8 is a view showing a method of automatically recording test history with respect to Figure 4A and 4Ba short circuit of the switching unit and initiates a detection unit of the withstand voltage test.

[0048] Figure 9 is a signal state diagram showing the gist of the operation principle of the detection unit according to the embodiment. Figure 8

[0049] Figure 10 is a perspective view showing an electrode plate structure according to another embodiment of the present application.

[0050] Figure 11 is a perspective view showing an electrode plate structure according to another embodiment of the present application. Figure 10 is a diagram showing the operation principle of the electrode plate in the electrode case of the electrode plate according to the embodiment.

[0051] Figure 12 is a diagram showing an example of the electrode case configured to adjust the gap between the divided electrode plates according to the embodiment of the present application.

[0052] Figure 13 is a circuit diagram according to the embodiment of the present application for detecting a signal necessary for determining the start time of the withstand voltage test from the electrode case equipped with Figure 10 the electrode plate as shown in FIG. 6.

[0053] Figure 14 is a view showing a part of the electrode case configured by assembling the divided electrode plates according to another embodiment of the present application to confirm the continuation of the test state for the set time.

[0054] Figure 15 is an example diagram showing the contact sensing circuit set for each electrode case in the embodiment to confirm the maintenance of the test state. Figure 14 DETAILED DESCRIPTION

[0055] In the following description of the embodiments of the present application and the accompanying drawings, the same reference numbers or symbols will be used to denote the same elements unless otherwise specified. Of course, the same components can be denoted by different reference numbers or symbols if necessary for convenience of explanation and understanding.

[0056] In the following description of the embodiments of the present application and the accompanying drawings, the same reference numbers or symbols will be used to denote the same elements unless otherwise specified. Of course, the same components can be denoted by different reference numbers or symbols if necessary for convenience of explanation and understanding.

[0057] Figure 3 is a view showing the components of the device 100 for testing the withstand voltage of the connector coupling cable according to the embodiment of the present application.

[0058] ​​A withstand voltage testing device (WVTD) 100 configured according to the present application includes a WVT 10 that outputs a high voltage required for a withstand voltage test as a component; a pair of electrode cartridges 30a, 30b; and a control block that is built in a control cartridge 20 for applying necessary control signals to the WVT 10 according to electrical signals detected from the pair of electrode cartridges 30a and 30b, respectively.

[0059] In an embodiment according to the present application, the WVTD 100 can be configured to further include a mechanical driving unit, not shown in the figure. The mechanical driving unit is configured to apply a physical force to an input device of a computing device according to a control signal transmitted from the control block. This configuration will be described in detail in a corresponding embodiment. Figure 3

[0060] In each of the electrode cartridges 30a and 30b, the front surface 33 of the housing is opened to a predetermined size; an electrode plate 31 made of a conductive material is installed on the inner front surface of the electrode cartridge so that one side of the electrode cartridge is exposed through the opening 331 of the front surface 33; and a plurality of light source elements 32 such as LEDs are installed at the front end of the upper portion. Each of the electrode plate 31 and the light source element 32 is connected to the circuit of the control block in the control cartridge 20 through a signal line (ss).

[0061] Figure 4A is a partially cut perspective view of the housing 300 to show the inside of the electrode cartridges 30a and 30b configured according to an embodiment of the present application.

[0062] In the illustrated electrode cartridge 30, a pair of fixing protrusions 332 protrude inwardly from two upper ends of the front surface 33 forming the opening 331, respectively. Both ends of a shaft 311 formed at the top of the electrode plate 31 are inserted into the holes of the two fixing protrusions 332, respectively, so that the electrode plate 31 rotates about the shaft (rx) of the shaft 311. The electrode plate 31 is made of a thin conductor to reduce weight.

[0063] In the vertical direction, a plate-shaped contact piece 312 is provided as an accessory part at the side of the lower end of the electrode plate 31. The contact piece 312 is coupled or attached to the electrode plate 31 through an insulating plate interposed therebetween. The insulation is to prevent the high voltage for the withstand voltage test from flowing into the control block to be described later through the electric wire connected to the switch unit 34 when the high voltage is applied to the electrode plate. When the electrode plate 31 rotates about the hinge shaft (rx) so that the lower portion is pushed into the inner space (rp), the contact piece 312 comes into contact with the switch unit 34 provided on the bottom surface of the housing 300.

[0064] Figure 4B A detailed structure of the switch unit 34 is shown in the case where the contact piece 312 coupled to the electrode plate 31 is in contact.

[0065] ​The switch unit 34 is composed of a pair of fixed protrusions 341 and a pair of conductive bolts 342 formed on the inner bottom of the housing 300, and each cylindrical portion is inserted into the through hole of the fixed protrusion 341. The ends of the cylindrical portions of the two bolts 342 are fixed on the fixed protrusions 341 in a state of being spaced apart from each other. The two cylindrical portions are used to detect the state in which the electrode plate 31 is rotated inward.

[0066] When the electrode plate 31 is rotated inward, the contact piece 312 moves to the gap CT between the ends of the cylindrical portions of the two bolts 342. gap The contact piece 312 is configured to have a width wider than the gap CT gap Thus, when the lower end of the electrode plate 31 is pushed inward while the electrode plate 31 is rotated around the shaft 311, the contact piece 312 simultaneously comes into contact with the cylindrical portions of the two bolts 342, thereby electrically short-circuiting the two bolts 342.

[0067] The signal lines ss1 are connected to the heads of the two bolts 342, respectively. These signal lines ss1 are connected to the control block in the control box 20 together with other signal lines ss2 connected to the light source element 32, respectively.

[0068] In another embodiment according to the present application, unlike the embodiment shown in Figure 4A and 4B , the electrode box can have a structure in which two signal lines ss1 connected to the control block are connected to both ends of the push switch. Figure 5A Only the components to which both signal lines ss1 are connected with respect to the electrode box configured according to the present embodiment are shown. In the present embodiment, the push element 320 is attached to the electrode plate 31 as an accessory, and includes a protrusion 321 having a predetermined height integrally formed or combined thereto.

[0069] The push switch 351 is coupled and fixed to the clamp 350 installed on the path on the inner bottom of the housing in a form in which the button side thereof faces the push element 320 through which the push element 320 passes when the electrode plate 31 is rotated. Both ends of the signal lines ss1 are connected to both ends of the push switch 351, respectively. In the present embodiment, it is preferable to use a push switch having weak repulsive force with respect to the button thereof.

[0070] In the electrode box having the structure as shown in Figure 5A , the force applied to the electrode plate 31 pushes down the button of the push switch 351 through the protrusion 321 of the attached push element 320, thereby electrically short-circuiting the two signal lines ss1. Thus, it is possible to detect whether the electrode plate 31 is in a state of being pushed inward through the push switch 351.

[0071] In Figure 5AIn the illustrated embodiment of the electrode cartridge, since the two signal lines ss1 are short-circuited as soon as a force is applied to the push button of the push switch 351, the push element 320 does not need to be made of an electrically conductive material unlike the above-described embodiment using the electric contact method.

[0072] In another embodiment according to the present application, as illustrated in FIG. 6, the electrode plate itself can push the push button 351a by mounting the push switch 351 in the jig 350 so that the push button 351a protrudes from the surface of the jig 350 by a proper height. In the case where the electrode cartridge is configured in this manner, in order to electrically short-circuit the two signal lines ss1 in the above-described embodiment, the elements (contact pieces and push elements) connected or coupled to the electrode plate become unnecessary. Figure 5B

[0073] In other embodiments according to the present application, the state of the force applied to the electrode plate can be detected in a non-contact manner.

[0074] One of these embodiments can be implemented by replacing the push switch 351 with a detection sensor, and in the configuration of the illustrated embodiment, a form in which a blank space is provided between the light emitting element and the light receiving element is configured. In this embodiment, for the voltage withstand test to be described in detail below, if the protrusion 321 of the push element 320 enters the detection blank space fixed between the light emitting element and the receiving element of the detection sensor, and the light of the light emitting element is blocked when the operator pushes the electrode plate with the strand of the electric wire, the light receiving state of the light receiving element is changed. This changed state is transmitted to the control block through the signal line ss1. Figure 5A

[0075]

[0076] 0 Figure 6 The configuration of the control block 200 is illustrated, and the mechanical driving unit 40 included in this embodiment and the connection relationship thereof are also illustrated.

[0077]

[0078] The control block 200 configured according to this embodiment includes a detection unit 220 for detecting the contact state of each switch unit 34 of the two electrode cartridges 30, a distributor 230 for distributing the signals of the signal lines (rs) connected to the internal lines of the WVT 10, respectively, and a control unit 210 for applying a test start signal (TSS) to the WVT 10 according to the signal detected by the detection unit 220, and for applying a test result signal s

[0079] and s GD and s NG drive the mechanical

[0080] ​​​​Drive unit 40.

[0081] The mechanical drive unit 40 is fixedly mounted on a keyboard or keypad 60 that can be used as an input device for a computing device.

[0082] In one embodiment according to the present invention, for such a stroke, the mechanical drive unit 40 is configured with a plurality of solenoids, the movement of which rods is controlled by electricity.

[0083] The number of solenoids provided in the mechanical drive unit 40 corresponds to the type of key to be input, so that

[0084] Record the history of cable withstand voltage test. For example, if the enter key and two direction keys on the keyboard need to be input, the mechanical drive unit 40 equipped with three solenoids is configured as follows: Figure 6 As shown in 411, each of its rods is located directly above these keys.

[0085] Hereinafter, a method for inspecting the withstand voltage of a cable using the WVTD 100 according to an embodiment of the present invention will be described in detail.

[0086] The operator first selects a list of cables to be tested 70 from a computing device executed by a predetermined specific program, such as Figure 7 As shown, the program has the following functions: in response to input such as arrow keys, the current cell is selected from the cells constituting the list; when a specific key is input, the type of information assigned to the selected cell is recorded, that is, the information of the test result is displayed in the cell designated as the corresponding item in the list. In some embodiments, additional information about the test, such as the test date,

[0087] An information field 710 of date and time is further included in the test list 70, and when the test result is recorded in the corresponding field 710, the specific program may further include a function of recording the date and time.

[0088] In an embodiment according to the present invention, when a test is initiated with test list 70 loaded into a specific program, the cell of the first item to be tested in column 720 corresponding to the predetermined field is designated as the current cell. This is merely an example of the detailed description of the present invention, and depending on the programming method of the specific program, this requirement may not be necessary. The same applies to inputting specific keys and moving between cells in test list 70, which will be described below as an example.

[0089] In preparation Figure 7 In the state of the test list 70 shown, the operator uses Figure 3 4, a method for inspecting the withstand voltage of a cable coupled to a connector and an operation of the WVTD 100 configured for the method are as follows.

[0090] As in the prior art, the operator separates the strands of the cable and the ground wire with both hands and places them into each opening 331 of a pair of electrode boxes 30 a and 30 b , thereby causing each tip to push the electrode plate 31 .

[0091] As described above, because the hinge axis (rx) is located above the point where the wire tip applies force, and the electrode plate 31 is a lightweight film, even when the tip is in contact with the plate, the electrode plate 31 can be easily pushed into the internal space by gently pushing it with the wire tip. As a result, the contact piece 312 coupled to the lower end of the electrode plate 31 is pushed back and contacts the pair of bolts 342.

[0092] Electrode plate 31 is configured to have a dome shape, or at least its center portion is recessed based on the virtual surface formed by the edges so as to partially have a dome shape. Therefore, even after the tips of some of the wire strands push the electrode plate, causing contact piece 312 to contact two bolts 342, if the operator maintains the pushing force, all of the wire strands slide along the dome-shaped electrode plate slope according to their respective lengths, and remain in contact with the electrode plate at the point where the applied force disappears.

[0093] When the contact piece 312 contacts the two bolts 342 and the bolts 342 are electrically short-circuited, the detection unit 220 detects this state. As described above, the state in which the electrode plate 31 is pushed inward by the force of the operator pushing the wire strands can be detected by the configuration according to various embodiments.

[0094] When a signal generated by the state in which the electrode plates are pushed inward is detected from each of the electrode boxes 30a and 30b, that is, an electrical short circuit between the two bolts 342 is detected, Figure 4A and 4B In the illustrated embodiment, the detection unit 220 applies a signal notifying that the test preparation is complete to the control unit 210. When this signal is input, the control unit 210 applies TSS through the control line cs1 connected to the WVT10.

[0095] Therefore, the WVT10 applies a preset high voltage to the two output ports connected to the test voltage driving line (dr). Since the test voltage driving line (dr) is also connected to the rear surface of the two electrode plates 31, as shown in FIG. Figure 3 As shown in Figures 4 and 5, the high voltage driven by the WVT10 is applied to both ends of the cable strands under test and the ground wire through the conductive electrode plate 31. In this state, if the current through the drive line (dr) exceeds the allowable leakage current, the WVT10 determines that the result of the withstand voltage test is a failure and turns on the LED provided on the front to indicate the fault.

[0096] Even if the current does not flow in the state where the high voltage is applied, the WVT 10 remains in the high voltage driving state for a preset duration, for example, 2-3 seconds, without immediately determining that the withstand voltage test is passed. Also, if no current flows in the driving line before the end of the set duration, the WVT 10 determines that the withstand voltage test has passed and turns on the corresponding LED provided in the front at the end of the duration.

[0097] In the WVTD 100, the signal line (rs) connected to the LED driving line inside the WVT 10, which is connected to the LEDs displaying the test result and the on / off of the power, is connected to the distributor 230, which distributes and connects each signal line (rs) to each light source element 32 of the two electrode boxes 30a and 30b. Thus, after the above-described withstand voltage test, the result displayed by the WVT 10 is transmitted to the light source elements 32 installed on the front top of each electrode box 30a, 30b through the distributor 230 (ss 2a 、ss 2b ) so that the light source elements configured to display the transmitted result are turned on in each of the electrode boxes 30a and 30b.

[0098] As described above, when the TSS is applied, the WVT 10 displays the test passed only when no current flows for a preset time. Incidentally, the WVT 10 does not know whether the fact that no current flows despite the high voltage being driven is due to the normal insulation, i.e., shielding, between the strands of the connector coupling cable and the ground line or due to the operator's negligence in separating the strand or the ground line in contact with the electrode plate 31 from the electrode plate. Thus, even in the latter case, the test result on the cable in the WVT is passed. This test result is a result obtained without satisfying the strict test condition, i.e., maintaining the high voltage application state for a predetermined time.

[0099] Thus, in one embodiment according to the present application, the WVTD is configured to prevent the test result from being obtained in a defective state where the test condition is not satisfied due to the operator's negligence or the like. In this embodiment, after the TSS is applied to the WVT 10 when the test ready signal is input by the detection unit 220, the control unit 210 checks whether the test ready signal is changed within a set time which is the same as or longer than the driving duration for the withstand voltage test preset in the WVT 10.

[0100] If the test ready signal is changed within the set time, the control unit 210 immediately applies a reset signal through the control line cs1 connected to the WVT 10. If the reset signal is input during the high voltage driving duration for the withstand voltage test, the WVT 10 initializes the internal settings and its circuit without displaying the result of the current withstand voltage test.

[0101] Therefore, if the short-circuit state between the contact tab 312 and the switch unit 34 is released due to the separation of the strands or the ground wire of the cable from the electrode plate 31 by the operator's mistake or carelessness during the test, the test is not performed at this time.

[0102] In another embodiment according to the present application, if the state changes after the test ready signal is applied from the detection unit 220, the control unit 210 can apply the reset signal to the WVT 10 regardless of whether the change is within the set time or after a delay of the time. In this embodiment, the high voltage drive power of the WVT 10 can be prevented from being attenuated by the repeated voltage withstanding test on the cable. In some WVTs, the required drive current, for example, 10 mA, is not initially supplied to the output port because it is gradually reduced during the repeated voltage withstanding test. In order to prevent the WVT from outputting the drive current deviating from the test condition in this manner, the operator periodically presses the reset button provided on the WVT to initialize the WVT.

[0103] Therefore, as in the present embodiment, when the signal state of the test ready signal from the detection unit 220 changes, the reset signal is unconditionally applied to the WVT 10, i.e., when the contact state is released after the strands and the ground wire of the cable are in contact with the electrode plate 31, the operator does not need to periodically reset the WVT during the voltage withstanding test of the cable.

[0104] In the present embodiment, as described above, if the reset signal of the control unit 210 is applied while the WVT 10 is performing the voltage withstanding test, i.e., during the drive duration, the WVT 10 cancels the current test being performed. If it is applied after the drive time ends, the test result is already displayed on the WVT and transmitted to the control block 200 before the application.

[0105] On the other hand, when the WVT 10 completes the voltage withstanding test and displays the result on the LED, the signal showing the above result is transmitted to the distributor 230, and then the test result signal s GD and s NG is also transmitted to the control unit 210.

[0106] The control unit 210 applies the drive signal to the mechanical drive unit 40 in a manner determined according to the applied test result signal s GD and s NG In the case of the example, the operation performed according to the input of the test result signal will be described in detail. When the signal s GD and s NG showing "pass" is input, the solenoid installed above the backspace key must operate so that the control unit 210 supplies the drive current to the mechanical drive unit 40 for the solenoid. GD When the signal s GD showing "fail" is input, the solenoid installed above the backspace key must operate so that the control unit 210 supplies the drive current to the mechanical drive unit 40 for the solenoid.

[0107] Thus, the carriage return key is struck, and the key inputted by the strike is passed to the above-mentioned specific program being executed in the computing device. Following this specific program, a code indicating a pass is written in the current cell in accordance with the key input, and a predefined pass status mode is set (p71) for the adjacent cell assigned a visual indication of pass / fail, and the current cell is moved to the cell below the current cell 721, that is, the current test item is moved to the next row in the cable list 70 corresponding to the cable to be tested next. According to the embodiment, information on the current date and time at which the test result code is written can be recorded in the cell of the corresponding field during this process.

[0108] If a signal s GD and s NG indicating a "pass" is inputted in the test result signal s NG , the control unit 210 drives the solenoid provided in the mechanical drive unit 40 to strike the keys corresponding to the right movement, carriage return, and left movement in sequence. Since the specific program is programmed to input the carriage return key to the adjacent column other than the column 720 in which the current cell is located at the start of the test, it records information indicating a pass in the information field, that is, the cell in which the test result is written, and sets (p72) a predefined pass status mode for the adjacent cell. Figure 7

[0109] According to the above-mentioned method, the operator performs the pressure test on the connector coupling cable using only both hands, and records the test history of the cables in the cable list 70 written in advance. In addition, even if the contact between the strand / ground wire of the cable and the electrode plate is temporarily released due to the operator's momentary carelessness or the like during the test, the test at that time is automatically cancelled, thereby obtaining all the test results on the cable in the case where the required test conditions are satisfied.

[0110] Various embodiments of the present application will be described below.

[0111] One of the various embodiments of the present application can be the simplest implementation of the concept and technical idea of the present application. In this embodiment, the control unit 200 is composed of only the sensing unit, and does not contain other components, and the signal output from the sensing unit is directly applied to the WVT 10 as the TSS. The sensing unit of this embodiment can be configured as shown in Figure 8 Of course, the detection unit 220, the operation of which has been described in the foregoing embodiment, can also be configured as shown in Figure 8

[0112] ​​The sensor unit 240 is configured to include a timer 241 for maintaining the driving signal within a preset time when the driving signal is input and a relay 242 for changing the contact state when the driving signal is input. In the sensor unit 240, both ends of the branch (TC) connected in series with the switch units 34 in the pair of electrode cartridges 30 are respectively connected to the power supply line V S and power inlet S P1 Furthermore, one input terminal of the timer 241, one driving terminal of the relay 242, and a signal line cs1 that is connected to the control line cs1 of the WVT10 and transmits TSS are connected. 1S , usually connected to the power inlet S P1 .

[0113] As described above, with this circuit connection, when the operator pushes the electrode plate 31 with the strands of the tested cable and the ground wire to short-circuit each switch unit 34, the power supply line V S The voltage is applied to one of the above input terminals, the driving terminal and the signal line cs at the same time 1S The operation of the sensing unit 240 in this state will refer to Figure 9 describe, Figure 9 The change of the relevant signal state over time is shown.

[0114] When the operator pushes the two electrode plates 31 to make the contact piece 312 of each electrode box 30 contact the switch unit 34, an input terminal of the timer 241, a driving terminal of the relay 242 and a control line cs connected to the WVT10 are connected. 1S TSS line cs 1S When both switch units 34 are in a short-circuit state, t S At this moment, the output terminal of the timer 241 in the sensing unit 240 also becomes HIGH due to the voltage applied to the input terminal a. This HIGH state is only in the preset time T INT The time T set in the timer 241 INT Not shorter than the driving duration T preset by WVT10 to determine the test results after the test starts REQ .

[0115] When the TSS line cs 1S When HIGH, the WVT10 applies a preset high voltage to the drive line (dr) to test the withstand voltage of the connector coupled cable.

[0116] At the same time, since both switch units 34 are short-circuited, power is supplied to the driving end of the relay 242, causing the path of the relay 242 to change from the b end to the a end, so that the ground reference potential V connected to the input end a is GNDLOW, to the output terminal of the relay 242. Before energization of the drive terminal, the output terminal of the relay 242 is connected to the input terminal b to which the output terminal of the timer 241 is connected, so that the output terminal of the relay 242 is in the LOW state because the output terminal of the timer 241 is connected to the input terminal b in the LOW state.

[0117] The output terminal of the relay 242 is connected to the signal line cs 1R of which one control line cs1 is connected to the WVT 10, through which the reset signal is transmitted, so that the reset signal inputted from this output terminal of the relay to the WVT 10 remains in the LOW state even after short-circuiting of the two switching units 34.

[0118] Reference is made to Figure 9 in which When the TSS is applied to the WVT 10, the drive duration T REQ is elapsed, while both switch units 34 remain in the short-circuit state, the test result is displayed. Then, the operator releases the force applied by the cable to the electrode plate 31, and accordingly, the contact tab 312 of the electrode plate 31 returning to the original position is separated from the switch unit 34, which is brought to the open state. At this time t E , the power supply inlet S P1 is cut off, and the relay 242 returns to the state in which the output terminal is connected to the input terminal b. The output terminal of the timer 241 also becomes the initial state LOW, and when the set time T INT is elapsed, its connection is switched to the input terminal b. Thus, the test of one cable is normally ended.

[0119] If the operator fails to maintain the contact of the contact tab 312 with the switch unit 34 within the drive duration T REQ required for the test, and the contact is released on the way, the short-circuit state of the switch unit 34 is broken when the electrode plate 31 returns to its original position. At this time point t O , the power supply inlet S P1 transits to LOW (90), as Figure 9 in which is shown.

[0120] When the power supply inlet S P1 becomes LOW, the power supply for driving the relay 242 is cut off, the path of the relay 242 is switched to b, and is connected to the output terminal of the timer 241. At this time, since the driving duration T REQ has not yet expired, the output terminal of the timer 241 is in the HIGH state, and the output terminal of the relay 242 is switched to HIGH (91). Since the output terminal of the relay 242 is connected to the reset signal line cs 1R as described above, the reset signal line cs 1R is also switched to the HIGH level (s RST ). Thus, the WVT 10 cuts off the driving high voltage and stops the test progress. Of course, the test result is not displayed.

[0121] As described above, if the operator fails to maintain the contact state of the strands of the cable and the ground wire with the electrode plate 31 during the driving duration T REQ , and temporarily does not come into contact with the electrode plate, at this time the reset signal is applied to the WVT 10, so that the WVT 10 stops the current test and does not generate a signal for displaying the test result. In the embodiment in which the control unit 210 and the mechanical driving unit 40 are provided, since the signals s GD and s NG indicating the test result are not received, the control unit 210 does not apply any driving signal to the mechanical driving unit 40.

[0122] Thus, unlike the above description, the information of the current test item is not recorded in the test list 70. After the T INT time set in the timer 241 elapses, the timer 241 is changed back to the initial state, and the operator again performs the test on the current cable.

[0123] In the embodiment according to the present application including the control unit 210, the circuit of the control unit 210 can be configured to receive the signal from the output terminal of the relay 242 of the detection unit 220 as an input, and to apply the input signal to the reset signal line cs 1R . In this embodiment, when the control unit 210 applies HIGH to the reset signal line cs 1R , it drives the light source element indicating the test error, which is provided as one of the light source elements 32, so that the operator is visually notified that the current test has been abnormally stopped.

[0124] In the embodiment according to the present application, the control unit 200 can be configured to further include an audible sound generating element, such as a buzzer. In this embodiment, when the control unit 210 stops the current test due to the short-circuit state of the switch unit 34 during the driving duration T REQ When the reset signal is applied to the WVT10 without being held for a period of time, it drives the audible sound generating element to generate a warning sound. In addition, even if the short-circuit state of the switch unit 34 is within the driving duration T REQ When the test is completed normally, the control unit 210 may also drive the audible sound generating element to generate a specific sound indicating that the test is completed normally.

[0125] In the description of the above embodiment, it is assumed that WVT 10 performs corresponding operations when the TSS and reset signals are both HIGH. However, this is merely an example of detailed description, and the WVT may receive a LOW relative to these signals as an active signal. For this type of WVT, the circuit of detection unit 220 is naturally configured to output the corresponding active signal.

[0126] The operation of the WVTD 100 described so far can be applied to an embodiment in which the electrode cartridge is equipped with electrode plates formed in a different structure. The structure of this embodiment will be mainly described below.

[0127] Figure 10 is a perspective view showing the structure of an electrode plate 52 configured according to an embodiment of the present invention, Figure 11 Only a portion of the electrode cassette provided with the electrode plate 52 constructed according to this embodiment is shown.

[0128] The electrode plate 52 of this embodiment consists of a movable plate 521 and a static plate 522, which are made of a conductive material and are separated from each other. The movable plate 521 has a shaft 521b formed at its upper end, similar to the electrode plate 31 of the above-described embodiment. Furthermore, the adjacent portions of the movable plate 521 and the static plate 522 are curved (521a, 522a), forming a smooth curved surface on the front when mounted on the housing.

[0129] The bent portion 521a of the movable plate 521 may be embodied in a spirally rolled shape one or more times to have an appropriate weight.

[0130] Alternatively, it can be bent to form a tube into which a rod of suitable weight can be inserted.

[0131] like Figure 11 As shown, the movable plate 521 is mounted on the housing 300' in the same manner as the electrode plate 31 of the above embodiment, and rotates around the upper axis (rx) when a thrust is applied from the front of the electrode cartridge.

[0132] The portion 522b is placed and fixed in the upper groove of the turntable 333 formed along the front bottom edge of the housing 300'. A separate fastening means, such as screws, can be used to fix it therein.

[0133] The housing 300' is configured to be open to the front or to have at least a curved portion corresponding to the portion facing the mounted electrode plate 52.

[0134] Openings at the front of 521a and 522b.

[0135] The movable plate 521 and the static plate 522 are configured such that their bent portions 521a and 522a are arranged with a predetermined gap P when mounted on the housing 300'. G. Vertically spaced. This gap P G It should be smaller than the diameter of the strands of the voltage-resistant cable to be tested.

[0136] In one embodiment of the present invention, the electrode box can be configured to adjust the gap P as needed. G . Figure 12

[0137] Partially shows the housing of the electrode box constructed according to the present embodiment. On a surface of the turntable 333, a plurality of through holes 334 are formed, wherein each through hole can be inserted into the fastening bolts that can make the static plate 522 fixedly inserted into the groove by pressing into the static plate 522.

[0138] Therefore, the upper curved portion 522a of the static plate 522 is appropriately spaced from the bottom of the groove, thereby forming a desired gap with the lower curved portion 521a of the movable plate 521 (H VAR ), each bolt inserted into the through hole 334 is tightened to

[0139] Strong contact with the static plate 522. In this way, the gap between the movable plate and the static plate is adapted to the cable to be tested.

[0140] The driving line (dr) of the WVT10 driving high voltage is connected to the movable plate 521 of the electrode plate 52, and a pair of signal lines ss U1 and ss B1 They are connected to the movable plate 521 and the static plate 522 respectively. U1 and ss B1 According to this embodiment, the connection to the detection unit

[0141] The circuit of the element will be described later so that its electrical terminals, namely the movable plate 521 and the static plate 0522, act as the two ends of the switch.

[0142] In another embodiment of the present invention, a driving line (dr) for driving a high voltage of the WVT10 may be connected to the static plate 522 .

[0143] like Figure 11 in As shown, the electrode plate 52 is mounted on the electrode box on the housing 300', in the voltage withstand test of the cable, to Figure 11 in The illustrated mode is used.

[0144] When the cable is subjected to a pressure test, the operator inserts the strands of the cable and the ground wire into the passage formed by the smooth slope of the bent portions 521a and 522a of the movable plate 521 and the static plate 522 at the front of each electrode box. In this process, part of the strands collide with the slope near the gap and are then guided to the gap by the slope. It is preferable that the operator apply a weak downward force to the strands or the ground wire inserted into the gap in a state of close contact with the upper portion of the static plate 522 fixed to the housing 300'.

[0145] The ends of the strands and the ends of the ground wire approach the gap P between the two plates G , and the pushing force of the operator continues. Then, since the gap P between the movable plate 521 and the static plate 522 G is smaller than the diameter of the strands, the non-fixed movable plate 521 is pushed with its upper end as a hinge axis (rx) toward the inside of the electrode box (p30).

[0146] When all the strand (ws) tips and the ground wire tips have passed through the gap P G , the operator stops the insertion operation when the movable plate 521 is no longer pushed in. At this time, the movable plate 521 and the static plate 522 are electrically connected by the strands (ws) or the ground wire sandwiched therebetween. Of course, this electrical connection state can be earlier than the time when part of the strands or the ground wire simultaneously come into contact with the two bent portions 521a and 522a while filling the gap between the movable plate 521 and the static plate 522.

[0147] In the state where the strands (or the ground wire) have passed through the gap P G , they are pressed by the appropriate weight of the movable plate 521, so that the movable plate 521, the strands (or the ground wire), and the static plate 522 remain in contact with each other.

[0148] In another embodiment according to the present application, an elastic member for applying a force to restore the movable plate 521 to the front can be provided on the inner side of the movable plate 521. When the movable plate 521 is pushed with these strands (or the ground wire), the elastic force of the elastic member preferably enables the movable plate 521 to be pushed without bending the plurality of strands (or the ground wire).

[0149] The electrical connection state between the movable plate 521 and the static plate 522 through the strands (or the ground wire) is transmitted to the detection unit 260 through the signal lines ss U1 and ss B1 connected to each plate, as Figure 13 illustrated in the configuration. The operation of the detection unit 260 will be described in detail below. The detection unit 260 can be included in the control block 200, the configuration of which is illustrated in Figure 6 , instead of the above-mentioned detection unit 220.

[0150] exist Figure 13 In the detection unit 260, the signal line ss U1x and ss B1x (x=a,b) through a pair of wires ss 1a and ss 1b Connected to the active plate 521 and the static plate 522 of each electrode box, and through each signal line ss U1x and ss B1x The electrical state of (x=a, b) detects whether there is an electrical short circuit between the movable plate 521 and the static plate 522. Since this detection process is performed in the same manner by a pair of detection blocks configured in the same circuit for a pair of electrode cartridges, the detection operation of the detection block for only one electrode cartridge will be described.

[0151] The detection block for detecting the electrical connection state between the movable plate 521 and the static plate 522 of the electrode cartridge includes: a first resistor R1 and a diode D, hereinafter referred to as a "source branch", between the power supply end and the signal line ss connected to the movable plate 521 U1a a second resistor R2 and a switch SW, hereinafter referred to as the "drain branch", the signal line ss connected to the ground and the static plate 522 B1a In series. And, the detection line cts a Connected to the node (dp) between the first resistor R1 and the diode D, and connected to Figure 6 The input end of the control unit 210 in the control block 200.

[0152] The switch SW may be a relay whose input terminal is opened or closed according to whether the driving current is supplied, and preferably, the two terminals of the switch SW are electrically connected when no driving current is supplied and electrically disconnected when the driving current is supplied.

[0153] exist Figure 11 of In the state, no wire strand (ws) is inserted between the movable plate 521 and the static plate 522, and the signal line ss U1a and ss B1a are both disconnected. Therefore, no current flows in the source branch in which the first resistor R1 and the diode D are connected in series, and the potential at the node (dp) remains the same as the supply terminal V S .

[0154] However, when the operator inserts the wire strand (ws) into the gap between the movable plate 521 and the static plate 522, both plates are electrically short-circuited by the wire strand (ws), and a closed circuit is formed between the supply terminal and the ground by the switch SW connected across the two terminals, as described above. Therefore, when the current flows along the path of the source branch and the drain branch, the potential at the node (dp) changes.

[0155] The potential at the node (dp) is then changed to R2 / (R1+R2)·VS. That is, a voltage drop occurs at the node (dp). If the same resistance values (R1=R2) are applied to the first resistor R1 and the second resistor R2 in the embodiment, the potential at the node (dp) drops to 1 / 2 of the potential before the short-circuit between the movable plate 521 and the static plate 522 when the movable plate 521 and the static plate 522 are electrically short-circuited by the wire strand.

[0156] Figure 6 The control unit 210 is connected to the detection line cts of the node (dp) a Such a potential change is detected on the movable plate 521 and then it is determined that the wire strand is inserted between the movable plate 521 and the static plate 522.

[0157] When the detection line cts connected to the electrode plate 52 a and cts b When the voltage on the MOSFET drops by more than a predetermined amount, the control unit 210 controls the MOSFET via the connected control line ops. a Applying a driving signal is used to open the switch SW. When the driving signal is input, both terminals of the switch SW are opened, thereby blocking the current path.

[0158] After the opening signal is applied to the switch SW, the control unit 210 applies the TSS to the WVT 10 as described above. Thus, the WVT 10 tests the withstand voltage as described above while a high voltage is supplied through the drive line (dr).

[0159] In the embodiment according to the present application, when the detection line cts a and cts b both have a voltage drop of a predetermined magnitude or more maintained for a predetermined interval (e.g., several hundred milliseconds), the TSS can be applied to the WVT 10.

[0160] When the WVT 10 drives a high voltage for testing, the high voltage is applied to one of the two plates, however, due to the reverse voltage applied to the diode D in the source branch, the drain branch is disconnected by the switch SW in the detection unit 260, and no current flows into the detection unit despite the high voltage applied for testing. That is, the detection unit 260 configured as shown in Figure 13 has no effect on the withstand voltage test of the cable.

[0161] As shown in the above embodiment, in one case, the electrode plates are configured in the form shown in Figure 10 and 11 and applied to the WVTD, if the state of contact of the strands and the ground wire of the cable with the electrode plates is not maintained for the duration of the drive set for testing, the test of the WVT 10 can be reset. In this embodiment, the electrode box is configured to further include a contact sensor. As shown in Figure 14 , the contact sensor includes a movable contact tab 251 of conductive material connected to one side of the movable plate 521 and a static contact tab 250 of conductive material fixed at a position of the inner surface of the front support of the housing facing the movable contact tab 251. The movable contact tab 251 rotates with the rotation of the movable plate 521 because the movable contact tab 251 is fixedly attached to the movable plate 521 with an insulator 252 interposed therebetween.

[0162] In addition, signal lines es I and es O are connected to the movable contact tab 251 and the static contact tab 250, respectively, and are connected to the electrical branches of a sensing circuit configured as shown in Figure 15 . The sensing circuit can be integrated into the detection unit 240 or the control unit 210 of Figure 13 .

[0163] In a state where no strands or ground wire is interposed between the movable plate 521 and the static plate 522, i.e., no force is applied to the movable plate 521, as shown in Figure 14 As shown, the movable contact 251 and the static contact 250 remain in contact with each other (NS). Thus, in the sensing circuit of Figure 15 a closed circuit is made, the current flows, and the sensing node (sp) is in the HIGH state.

[0164] When the operator, in order to perform the voltage withstand test on the cable, pushes the strands and the ground wire into the electrode plate gap of the two electrode boxes, respectively, as described above, the movable contact 521 is pushed inward, the electrical short between the movable contact 251 and the static contact 250 is broken, which means Figure 15 the branch of the sensing circuit is cut off. At this time, the current flow stops, and the sensing node (sp) transitions to the ground potential to which the resistor is connected, i.e., LOW.

[0165] Therefore, after opening the switch SW of the detection unit 260 and applying the TSS to the WVT 10, the control unit 210 continuously checks the state of the sensing node (sp) for a time set at least equal to or greater than the driving duration. If, during the checking process, two or one of the sensing nodes (sp) is changed to HIGH, at least one of the strands and the ground wire is separated from the gap P G of the electrode plate 52, so that the control unit 210 applies the reset signal to the WVT 10 as described above.

[0166] In the embodiment of the present application described with reference to Figures 10 to 13 , a conductor must be inserted between the movable plate 521 and the static plate 522 spaced apart from each other in order to perform the voltage withstand test. Therefore, it is impossible to intentionally damage, for example, to push the electrode plate 31 with an object other than the conductor to short the switch unit 34, thereby falsely passing the voltage withstand test of the cable, while a malicious operator can do such a thing when performing the voltage withstand test on the cable using the electrode plate of the embodiment having the structure shown in Figure 4A and 4B .

[0167] By controlling the mechanical driving unit 40, the operations of displaying the test result in the computing device and recording the test history are performed, just Figures 10 to 13 as in the embodiment of the present application shown in Figure 4A and 4B , which are not described for the embodiment having the structure of the electrode plate as described previously.

[0168] Unless the various embodiments of the WVT D described so far are incompatible with each other, the explained embodiments can be appropriately selected in various ways and then combined to embody the concepts and ideas of the present application.

[0169] For the purpose of illustration, the embodiments of the application described above have been presented; therefore, it should be understood by those skilled in the art that modifications, changes, substitutions or additions can be made to the embodiments without departing from the technical principles and scope of the application defined by the appended claims.

Claims

1. A device for checking the withstand voltage of a cable, characterized in that: include: a pair of electrode cartridges; as well as a control block configured to apply a start signal to a test instrument according to an electrical state detected in each electrode cartridge, the test instrument driving an output port with a preset voltage, Each pad cartridge includes: a housing configured such that at least a portion of the front surface is open; a conductive electrode plate rotatably mounted on the inner front surface of the housing about its top end; and A detection unit is installed inside the housing in a form with a predetermined gap between the electrode plate and the housing, and is configured to detect a state in which the electrode plate rotates when the lower portion of the electrode plate is pushed inward. Wherein, the electrical state is the electrical state between the two ends of the detection unit, and the electrode plates of the pair of electrode boxes are electrically connected to the output ports respectively; The detection unit is configured so that the electrical state between the two terminals changes due to a force applied by the electrode plate or an accessory component coupled to the electrode plate.

2. The device for checking cable withstand voltage according to claim 1, characterized in that: The control block is further configured to apply a reset signal to the test instrument if the electrical state when the start signal is applied is not maintained until a predetermined time has passed from the time when the start signal is applied.

3. The device for checking cable withstand voltage according to claim 1, characterized in that: At least a portion of the electrode plate is configured to have an inclined surface formed in a shape in which a portion thereof is more recessed toward the inside of the housing as it approaches the center.

4. The device for checking cable withstand voltage according to claim 1, characterized in that: The accessory component, which faces the detection unit when rotating together with the electrode plate, is coupled to the electrode plate.

5. The device for checking cable withstand voltage according to claim 4, characterized in that: The detection unit is configured so that the electrical state between the two terminals is changed by physical contact with an attached component or contactless entry of the attached component into a predetermined detection space.

6. The device for checking the withstand voltage of a cable according to claim 1, characterized in that: The control block is further configured to be connected to a specific line through which the test instrument sends a signal to display the test result by driving the output port with a preset voltage, and to receive the signal carried on the specific line.

7. The device for checking the withstand voltage of a cable according to claim 1, characterized in that: The control block is configured to apply the start signal when electrical states respectively detected from the pair of electrode cartridges become the same.

8. The device for checking the withstand voltage of a cable according to claim 1, characterized in that: The control block is further configured to apply a reset signal to the test instrument when a predetermined time has elapsed from the application of the start signal.

9. A device for checking the withstand voltage of a cable, characterized in that: include: a pair of electrode cartridges; as well as a control block configured to apply a drive start signal to the test instrument to drive the output port with a preset voltage according to the electrical state detected in each electrode cartridge, Each pad cartridge includes: a housing configured such that at least a portion of the front surface is open; a conductive movable plate rotatably mounted on the inner front surface of the housing about its top end; and The static plate is fixed on the front side of the shell and is vertically coplanar with the movable plate by leaving a gap with the lower end of the movable plate. wherein, depending on whether a conductive object is inserted into the gap, the electrical state between the movable plate and the static plate is electrically disconnected or short-circuited, and the movable plate or the static plate of the pair of electrode boxes is electrically connected to the output port respectively; The lower portion of the movable plate and the upper portion of the static plate are respectively bent into the shell to form curved surfaces.

10. The device for checking the withstand voltage of a cable according to claim 9, characterized in that: Also includes: a first contact piece fixed to one side of the movable plate in a manner electrically insulated from the movable plate; as well as a second contact piece, which is provided on a point on the inner surface of the front support of the housing and faces the first contact piece, Signal lines for detecting contact between the first contact piece and the second contact piece are connected to the two contact pieces respectively, and each signal line is connected to a detection circuit included in the control block.

11. The device for checking the withstand voltage of a cable according to claim 10, characterized in that: The control block is further configured to apply a reset signal to the test instrument if the non-contact state between the two contact pieces detected from the signal line is not maintained until a predetermined time has passed since the start signal was applied.

12. The device for checking the withstand voltage of a cable according to claim 9, characterized in that: The control block includes: a detection circuit configured to apply a voltage across the movable plate and the static plate to detect an electrical state; as well as A control unit is configured to cut off an electrical connection within the detection circuit so that no current flows therein when a signal corresponding to a short circuit between the movable plate and the static plate is detected from the detection circuit.

13. The device for checking the withstand voltage of a cable according to claim 9, characterized in that: The structure of the housing allows the height of the static plate from the bottom of the housing to be adjusted.

14. The device for checking the withstand voltage of a cable according to claim 1 or 9, characterized in that: The control block is further configured to be connected to a specific line through which the test instrument sends a signal to display a test result dependent on driving the output port with a preset voltage, and to receive a signal carried on the specific line.

15. The device for checking the withstand voltage of a cable according to claim 14, characterized in that: The control block is configured to control illumination of a plurality of light source elements fixedly mounted on one surface of the housing so that they are turned on differently according to signals carried on specific lines.

16. The device for checking the withstand voltage of a cable according to claim 14, characterized in that: Also included is a mechanical driving unit mounted on an input device of the computing device, capable of individually striking a plurality of keys provided on the input device, The control block is configured to apply a drive signal to the mechanical drive unit so that it strikes different keys according to the signal carried on a specific line.

17. The device for checking the withstand voltage of a cable according to claim 1 or 9, characterized in that: The control block is configured to apply the start signal when electrical states respectively detected from the pair of electrode cartridges become the same.

18. The device for checking the withstand voltage of a cable according to claim 1 or 9, characterized in that: The control block is further configured to apply a reset signal to the test instrument when a predetermined time has elapsed from the application of the start signal.

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