JP2019152546A - Water-stop inspection structure - Google Patents

Abstract

To provide a water-stop inspection structure with which it is possible to inspect water-stop performance with a simple facility.SOLUTION: Provided is a water-stop inspection structure 1 comprising an electric wire bundle 5 with a plurality of electric wires 3 bundled, a grommet 9 having a cylindrical insertion part 7 which the electric wire bundle 5 is inserted through, a pair of seal parts 11, 11 provided with a space therebetween in a portion of the electric wire bundle 5 that is arranged inside of the insertion part 7, for filling up a gap between the plurality of electric wires 3 and between the electric wires 3 and the insertion part 7, and a non-seal part 13 provided between the pair of seal parts 11, 11 of the electric wire bundle 5, wherein one end of an air injection tube 15 is arranged inside of the non-seal part 13, and a measuring instrument 17 for supplying the non-seal part 13 with air via the air injection tube 15 and detecting a reduction in the air pressure is connected to the other end of the air injection tube 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water stop inspection structure. In detail, it is related with the water stop test | inspection structure which test | inspects the water stop function of the seal | sticker part provided in the some electric wire penetrated by the insertion part of a grommet.

  Conventionally, as a water stop inspection structure, a wire harness as a bundle of electric wires in which a plurality of electric wires are bundled, a grommet having a cylindrical insertion portion through which the wire harness is inserted, and an insertion portion of the wire harness are arranged. A water stop treatment portion as a seal portion that fills the gap between the plurality of electric wires and the wire and the insertion portion, a gas supply port provided at one end of the water stop treatment portion of the grommet, and a grommet What is provided with the gas detection port provided in the other end side of the water stop process part is known (for example, refer patent document 1).

  In this water stop inspection structure, the inspection gas is supplied from the gas supply port, the inspection gas leaking from the water stop processing unit is detected, and the water stop performance is below the standard when the detected amount is equal to or greater than the threshold. It is determined.

JP 2010-230318 A

  However, in the still water inspection structure as in Patent Document 1, a gas cylinder that supplies an inspection gas from a gas supply port, a gas leak detector that detects an inspection gas that leaks from a seal portion, and a gas leak detector are provided. An evaluation device for evaluating the detected amount of the detected gas for inspection was required, and a large facility was required for inspecting the water stopping performance.

  Then, this invention aims at provision of the water stop test | inspection structure which can test | inspect water stop performance with simple equipment.

  The invention according to claim 1 is an electric wire bundle in which a plurality of electric wires are bundled, a grommet having a cylindrical insertion portion through which the electric wire bundle is inserted, and a portion disposed inside the insertion portion of the electric wire bundle A pair of seal portions that are provided apart from each other and fill a gap between the wires and the insertion portion, and a non-seal portion provided between the pair of seal portions of the wire bundle, An air injection pipe having one end disposed inside the non-seal part and the other end of the air injection pipe are connected to supply air to the non-seal part via the air injection pipe to detect a decrease in air pressure. It is a water stop inspection structure characterized by having a measuring instrument to do.

  In this water stop inspection structure, a pair of seal portions that fill the gaps between the plurality of electric wires and the electric wires and the insertion portion are provided apart from each other in the portion disposed inside the insertion portion of the electric wire bundle. The non-seal portion provided between the pair of seal portions of the wire bundle can be a sealed space.

  One end of an air injection pipe is arranged inside the non-seal part, and the other end of the air injection pipe is supplied with air to the non-seal part via the air injection pipe to detect a decrease in air pressure. Is connected.

  For this reason, air is supplied from the measuring instrument to the non-sealed part, and the measuring instrument detects a decrease in the pressure of the air, so that air leakage from the sealing part can be detected and a large facility is required. Absent.

  Therefore, in such a water stop inspection structure, it is possible to supply air and evaluate the water stop performance with a measuring instrument, and to check the water stop performance with simple equipment.

  Invention of Claim 2 is the water stop test | inspection structure of Claim 1, Comprising: The said air injection pipe is between the said some electric wire from any one said seal part side among a pair of said seal parts. One end is arranged in the non-seal part through insertion.

  In this water stop inspection structure, the air injection pipe is inserted between the plurality of electric wires from either one of the pair of seal parts, and one end is disposed in the non-seal part, so the water stop performance After the inspection, by removing the other end of the air injection pipe from the measuring instrument, the air injection pipe is used as a dummy electric wire, and the sealing performance of the pair of seal portions is not deteriorated.

  In addition, after inspecting the water stop performance, even if the air injection tube is pulled out between the plurality of electric wires, only the sealing performance of one sealing portion is lowered, and the sealing performance of the other sealing portion is maintained. And water retention performance can be maintained.

  According to the present invention, there is an effect that it is possible to provide a water stop inspection structure capable of inspecting water stop performance with simple equipment.

It is sectional drawing of the water stop test | inspection structure which concerns on embodiment of this invention. It is a perspective view of the electric wire bundle of the still water inspection structure concerning an embodiment of the invention. It is a side view when a pair of seal part is provided in the wire bundle of the water stop inspection structure concerning an embodiment of the invention.

  The water stop test | inspection structure which concerns on embodiment of this invention using FIGS. 1-3 is demonstrated.

  The water stop inspection structure 1 according to the present embodiment includes an electric wire bundle 5 in which a plurality of electric wires 3 are bundled, a grommet 9 having a cylindrical insertion portion 7 through which the electric wire bundle 5 is inserted, and insertion of the electric wire bundle 5. A pair of seal portions 11, 11 provided to be spaced apart from a portion disposed inside the portion 7 and filling a gap between the plurality of electric wires 3 and a gap between the electric wires 3 and the insertion portion 7, and a pair of seal portions of the wire bundle 5 11 and 11 and a non-seal part 13 provided between them.

  One end of an air injection pipe 15 is disposed inside the non-seal part 13, and the other end of the air injection pipe 15 is supplied with air to the non-seal part 13 via the air injection pipe 15. A measuring instrument 17 for detecting a decrease in the amount of the signal is connected.

  The air injection tube 15 is inserted between the plurality of electric wires 3 from either one of the pair of seal portions 11, 11, and one end thereof is disposed in the non-seal portion 13.

  As shown in FIGS. 1 to 3, the wire bundle 5 has one end connected to a device or the like disposed on the outdoor side (here, the left region of the grommet 9 shown in FIG. 1) and the other end is indoors (here. It is configured by bundling a plurality of electric wires 3 connected to a device or the like disposed on the right side area of the grommet 9 shown in FIG.

  The wire bundle 5 is disposed through an insertion portion 7 of a grommet 9 that is assembled in a hole provided in a panel (not shown) that partitions the outdoor and indoor spaces.

  The grommet 9 is made of an elastic material such as rubber and includes a main body portion 19 and an insertion portion 7.

  The main body portion 19 is formed in an annular shape, and an engagement groove 21 that is engaged with the inner edge portion of the hole portion of the panel is continuously provided on the outer periphery in the circumferential direction.

  The main body 19 fixes the grommet 9 to the panel by engaging the engaging groove 21 with the hole of the panel, and seals and partitions the outdoor side and the indoor side of the panel.

  The insertion portion 7 is formed in a thin cylindrical shape with one member continuous with the main body portion 19 on the inner peripheral side of the main body portion 19, and is in close contact with the outer peripheral surface of the electric wire bundle 5, and the electric wire bundle 5 is inserted therethrough.

  The insertion portion 7 is in close contact with the outer peripheral surface of the wire bundle 5, thereby preventing water or the like from entering along the outer periphery of the wire bundle 5 from the outdoor side to the indoor side or from the indoor side to the outdoor side. .

  In the wire bundle 5 inserted through such an insertion part 7, a pair of seal parts 11, 11 and a non-seal part 13 are provided in a part disposed inside the insertion part 7.

  The pair of seal portions 11, 11 are disposed in a portion disposed inside the insertion portion 7 of the wire bundle 5 so as to be separated on both sides in the length direction of the wire bundle 5.

  The pair of seal portions 11, 11 is made of a water-stopping material such as silicon, and is applied from the outer peripheral side of the wire bundle 5 so as to be filled between the plurality of wires 3. The water is stopped so as to fill the space between the insertion portion 7 and the insertion portion 7.

  The non-seal portion 13 is disposed between the pair of seal portions 11, 11 in the length direction of the wire bundle 5, and is a portion where water is not stopped between the plurality of wires 3.

  The non-seal portion 13 becomes a sealed space sealed by the pair of seal portions 11 and 11 in a state where the wire bundle 5 is inserted through the insertion portion 7.

  The outer periphery of the pair of seal parts 11 and 11 and the non-seal part 13 is covered with the sheet 23 after the pair of seal parts 11 and 11 is provided on the wire bundle 5, and is covered with the sheet 23. Thus, the wire bundle 5 is inserted into the insertion portion 7.

  Air is supplied to such a non-seal part 13 by the air injection pipe 15 and the measuring instrument 17, and a water stop performance is inspected.

  The air injection tube 15 is in a state before the pair of seal portions 11, 11 is provided in the wire bundle 5, and the seal portion 11 located on the indoor side of the pair of seal portions 11, 11 (here, located on the right side in FIG. 1). One end is arranged in the non-seal part 13 through the plurality of electric wires 3 from the seal part 11) side.

  The other end of the air injection tube 15 is connected to the measuring instrument 17.

  The measuring instrument 17 is connected to the other end of the air injection pipe 15 and supplies air to the non-seal portion 13 through the air injection pipe 15.

  The measuring instrument 17 detects whether or not a decrease in the air pressure occurs when air is supplied to the non-seal portion 13.

  At this time, when the air pressure is reduced in the non-seal portion 13, it is detected that air leakage has occurred in at least one of the pair of seal portions 11 and 11.

  In order to determine the decrease in the air pressure, a threshold value for decreasing the pressure is set.

  It is necessary to perform air supply, detection of air leakage, and evaluation of water stop performance with separate inspection devices by performing air supply and air leakage detection with such a measuring instrument 17. There is no need for large equipment.

  After the water stop performance is inspected by the measuring instrument 17, the other end of the air injection pipe 15 is removed from the measuring instrument 17, and a water stop process is performed to close the other end of the air injection pipe 15. The tube 15 is left in the wire bundle 5 as a dummy wire.

  By using the air injection tube 15 as a dummy electric wire in this way, there is no gap in the seal portion 11 on the side where the air injection tube 15 is inserted, and the sealing performance of the seal portion 11 is not deteriorated.

  On the other hand, after the water stop performance is inspected by the measuring instrument 17, the other end of the air injection pipe 15 may be removed from the measuring instrument 17, and the air injection pipe 15 may be pulled out from between the plurality of electric wires 3.

  When the air injection tube 15 is pulled out from between the plurality of electric wires 3 as described above, a gap is generated in the seal portion 11 on the side where the air injection tube 15 is inserted, and the sealing performance of the seal portion 11 is slightly lowered. Since the seal portion 11 on the side into which the pipe 15 is inserted is disposed on the indoor side, the area where water or the like enters the non-seal portion 13 from the seal portion 11 side is often exposed to water. There are very few compared with the outdoor side seal part 11 which is.

  In addition, even if water or the like enters the non-seal portion 13 from the indoor side, the water stop performance of the seal portion 11 disposed on the outdoor side which is a water-resistant region sufficiently satisfies the standard. Water does not enter from the inside to the outside of the room.

  Note that one end of the air injection pipe 15 may be inserted between the plurality of electric wires 3 from the seal part 11 side arranged on the outdoor side and arranged on the non-seal part 13.

  Even in this case, even after the water stop performance is inspected by the measuring instrument 17, even if the air injection pipe 15 is pulled out and the sealing performance of the outdoor sealing portion 11 is deteriorated, the sealing portion 11 on the indoor side is reduced. The water stop performance is maintained by the water, and water or the like does not enter from the outdoor side toward the indoor side.

  In the water stop inspection method in such a water stop inspection structure, first, the air injection pipe 15 is arranged between the plurality of electric wires 3 so that one end of the air injection pipe 15 is positioned at the non-seal portion 13, and air injection is performed. A plurality of electric wires 3 are bundled together with the tube 15 to constitute an electric wire bundle 5.

  Next, a waterproof material is applied to the wire bundle 5, a pair of seal portions 11, 11 is provided, and the outer periphery is covered with a sheet 23.

  Next, the wire bundle 5 is inserted through the insertion portion 7 of the grommet 9 to complete the assembly of the wire bundle 5 to the grommet 9.

  Next, the other end of the air injection pipe 15 is connected to the measuring instrument 17, and air is supplied to the non-seal portion 13 through the air injection pipe 15 to detect a decrease in the air pressure.

  If there is no decrease in the air pressure, it is determined that the water stop performance meets the standard. If there is a decrease in the air pressure, it is determined that the water stop performance does not meet the standard. To complete the water stop inspection.

  In addition, after completion | finish of a water stop test | inspection, what satisfies the standard of water stop performance leaves the air injection pipe 15 as a dummy electric wire, or removes the air injection pipe 15 from the electric wire bundle 5.

  In such a water stop test structure 1, a pair of seal portions 11 that fills the gaps between the plurality of wires 3 and the wires 3 and the insertion portion 7 in the portion disposed inside the insertion portion 7 of the wire bundle 5, Since 11 is spaced apart, the non-seal part 13 provided between the pair of seal parts 11, 11 of the wire bundle 5 can be used as a sealed space.

  One end of an air injection pipe 15 is disposed inside the non-seal part 13, and the other end of the air injection pipe 15 is supplied with air to the non-seal part 13 via the air injection pipe 15 to control the pressure of the air. A measuring instrument 17 for detecting the decrease is connected.

  For this reason, air is supplied from the measuring instrument 17 to the non-seal portion 13, and the measuring instrument 17 detects a decrease in the pressure of the air, so that air leakage from the seal portion 11 can be detected, and a large facility is required. And never.

  Therefore, in such a water stop inspection structure 1, the measurement device 17 can supply air and evaluate the water stop performance, and the water stop performance can be inspected with simple equipment.

  In addition, the air injection pipe 15 is inserted between the plurality of electric wires 3 from either one of the pair of seal portions 11 and 11 and disposed at one end of the non-seal portion 13. After inspecting the water performance, by removing the other end of the air injection tube 15 from the measuring instrument 17, the air injection tube 15 is used as a dummy electric wire, and the sealing performance of the pair of seal portions 11 and 11 is not deteriorated. .

  In addition, after inspecting the water stop performance, even if the air injection tube 15 is pulled out from between the plurality of electric wires 3, only the sealing performance of one seal portion 11 is lowered, and the seal of the other seal portion 11 is reduced. The water stopping performance can be maintained.

  In the water stop inspection structure according to the present embodiment, the air injection tube is inserted between the plurality of electric wires in a state before the pair of seal portions are provided, and one end is disposed in the non-seal portion. However, the present invention is not limited thereto, and one end of the air injection tube may be disposed on the non-seal portion and covered with the sheet in a state before the cover is covered with the sheet after the pair of seal portions is provided in the wire bundle.

  In this case, the air injection pipe may be left as a dummy electric wire after the water stop performance is inspected by the measuring instrument, or the air injection pipe may be removed from the non-seal portion.

  By disposing one end of the air injection tube in the non-seal portion in this way, the water stop performance of the pair of seal portions can be maintained without affecting the sealing performance of the pair of seal portions.

DESCRIPTION OF SYMBOLS 1 ... Water stop inspection structure 3 ... Electric wire 5 ... Electric wire bundle 7 ... Insertion part 9 ... Grommet 11 ... Seal part 13 ... Non-seal part 15 ... Air injection pipe 17 ... Measuring instrument

Claims (2)

A wire bundle in which a plurality of wires are bundled;
A grommet having a cylindrical insertion portion through which the wire bundle is inserted;
A pair of seal portions that are provided apart from each other in a portion disposed inside the insertion portion of the wire bundle and fill a gap between the wires and the insertion portion;
A non-seal portion provided between a pair of the seal portions of the wire bundle;
An air injection pipe having one end disposed inside the non-seal part;
A measuring instrument that is connected to the other end of the air injection pipe and supplies air to the non-seal part via the air injection pipe to detect a decrease in air pressure;
A water stop inspection structure characterized by comprising: The water stop inspection structure according to claim 1,
The air injection pipe is inserted through a plurality of the electric wires from either one of the pair of seal portions, and one end of the seal is disposed in the non-seal portion. Inspection structure.

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