JP2004055267A - Water-stopping agent applying jig and waterproofing method of wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-stopping agent applying jig and a waterproofing method of a wire harness capable of improving a workability of water-stopping agent application, improving waterproof of the wire harness, and preventing hardening of the water-stopping agent. <P>SOLUTION: The jig main body 15 is provided with an intermediate member 17 plugged into an inside of the wire harness and a switching member 18 positioned at both sides of the intermediate member 17 to hug the wire harness from outside. A pair of discharge outlet are provided at a tip side of intermediate member 17, a discharge outlet at a tip side of the switching member 18, and the water-stopping agent is made discharged from each outlet at the same time. The tip side of the switching member 18 is biased in a closing direction with a biasing means. A center nozzle 25 is formed in a recessed state and side nozzles 26 are formed in protrusion, so that the side nozzles 26 fill up the center nozzle 25, and each discharge outlet is blocked. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a waterproofing agent applying jig for applying a waterproofing agent to a wire harness inserted through a grommet attached to a vehicle body panel or the like, and a waterproofing method of the wire harness.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a wire harness that is inserted into a door panel of an automobile or a vehicle body panel that separates an engine room from a vehicle compartment, there is a problem that rainwater penetrates between electric wires from outside the vehicle and into the vehicle. Therefore, in order to solve such a problem, a waterproof agent is applied between the electric wires to waterproof the wire harness.
[0003]
As an example of this type of wire harness waterproofing method, a method described in JP-A-11-224541 is known. As shown in FIG. 6, in this method, a waterproofing agent 58 is permeated between electric wires 56 using a waterproofing device 53 installed on a wiring board 51 to waterproof the wire harness 55.
[0004]
The wire harness 55 is supported by the wiring jig 52 erected on the wiring table 51, and the portion to which the waterproofing agent 58 is applied is rubbed and spread by hand and placed on the waterproof device 53. The water stopping agent 58 is applied by the application jig 50 to the outside of the rubbed wire harness 55. Then, the flexible sheet 57 is wound around the waterproofing agent 58.
[0005]
Next, the wire harness 55 is positioned between the upper pressing plate 53a and the lower pressing plate 53b of the waterproofing device 53, and the upper pressing plate 53a and the lower pressing plate 53b are brought close to each other so that the flexible sheet 57 of the wire harness 55 is formed. Is pressed, so that the waterproofing agent 58 penetrates between the electric wires 56. Subsequently, the wire harness 55 is rotated by 90 °, and the upper and lower pressing plates 53a and 53b are similarly brought close to each other to press the wire harness 55, so that the water stopping agent 58 penetrates into the gap between the electric wires 56.
[0006]
By repeating such an operation, the waterproofing agent 58 is made to permeate the gap between the electric wires 56. Then, the portion where the flexible sheet 57 is wound is taken out from the waterproof device 53, inserted into a grommet (not shown) attached to a vehicle body panel or the like, and both ends of the grommet are tape-wound.
[0007]
The waterproofing device 53 includes an upper pressing plate 53a and a lower pressing plate 53b that are vertically opposed to each other, and an elevating operation rod (not shown) that moves the lower pressing plate 53b up and down. By pushing down the lifting operation rod, the lower pressing plate 53b rises, and the wire harness 55 is pressed up and down together with the flexible sheet 57 with the upper pressing plate 53a, so that the wire harness 55 is flattened. Is massaged.
[0008]
[Problems to be solved by the invention]
However, the above-mentioned conventional waterproofing method for a wire harness has the following problems to be solved.
[0009]
If the waterproofing device 53 is used, the water harness 55 is pressed in the vertical direction and rubbed, so that the waterproofing agent 58 can penetrate between the electric wires 56, and the waterproofness can be improved, but the wiring The base 51 must be provided with the waterproof device 53, and there is a problem that the work space is narrowed and the wiring work is hindered.
[0010]
In addition, since the waterproofing operation of the wire harness 55 includes the waterproofing agent application operation using the application jig 50 and the kneading operation using the waterproofing device 53, the number of operation steps increases, and the productivity of the wire harness 55 decreases. There is.
[0011]
As an example of a waterproofing method without using the waterproofing device 53, a waterproofing method described in Japanese Patent Application Laid-Open No. 10-135657 is known. In this method, the electric wires 61 are arranged in a line, and the waterproofing agent is applied to the electric wires 61 using an application jig 60.
[0012]
However, in this method, after the electric wires 61 are aligned in a line using a jig having a narrow groove (not shown), a waterproofing agent must be applied to both the front and rear surfaces of the electric wires 61. There is a problem that it takes too much time for both the work of arranging in a line and the work of applying, so that the workability is low.
[0013]
When the waterproofing agent is applied in a state where the electric wires 61 are not bundled and the electric wires 61 are bundled, since the high-viscosity waterproofing agent does not penetrate to the back, a gap remains between the electric wires 61 and completely. Without being waterproofed, rainwater would enter the vehicle from outside the vehicle along the electric wires 61.
[0014]
Further, the conventional coating jigs 50 and 60 have a problem that air (moisture) invades from each part and the internal water blocking agent is naturally solidified. When the water-stopping agent is hardened, the discharge amount of the water-stopping agent may decrease, or when the work is started the next day, it may not be possible to use the water-stopping agent without overhaul.
[0015]
In view of the above, the present invention can improve the workability of applying a water-stopping agent, improve the waterproofness of a wire harness, and prevent the water-stopping agent from solidifying. An object of the present invention is to provide a coating jig and a method of waterproofing a wire harness.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is a water stopping agent applying jig for applying a water stopping agent to a wire harness, wherein the jig main body is inserted into the inside of the wire harness. And an opening / closing member positioned on both sides of the intermediate member to hold the wire harness from the outside, and a pair of discharge ports are respectively provided on the distal end sides of the intermediate member on both sides, and the distal end side of the opening / closing member is provided. A discharge port, and the water stopping agent is simultaneously discharged from each discharge port.
[0017]
According to the above configuration, while extracting the water-stopping agent applying jig inserted into the wire harness, the water-stopping agent is provided from the pair of discharge ports provided on the distal end side of the intermediate member and the discharge ports provided on the distal end side of the opening / closing member. Is discharged, the waterproof agent is simultaneously applied to the inside and outside of the wire harness.
[0018]
According to a second aspect of the present invention, in the water blocking agent applying jig according to the first aspect, the distal end side of the opening and closing member is urged in a closing direction by an urging means.
[0019]
According to the above configuration, the waterproofing agent applying jig is inserted into the wire harness while opening the left and right opening and closing members, and when the waterproofing agent applying jig is pulled up, the urging means is urged in the closing direction. The opening / closing member pulls up while sandwiching the electric wire, and expands the electric wire divided into right and left in the pulling direction. For this reason, hand massage and a special jig for spreading the electric wires are not required, and the waterproofing agent can be uniformly applied between the electric wires without unevenness.
[0020]
According to a third aspect of the present invention, in the water blocking agent applying jig according to the first or second aspect, a center nozzle including the discharge port of the intermediate member, and a side nozzle including the discharge port of the opening / closing member. Are located opposite to each other, and each discharge port is closed when the opening / closing member is closed.
[0021]
According to the above configuration, when the opening / closing member is in the closed state, the discharge port of the center nozzle and the discharge port of the side nozzle are fitted and closed, and the natural solidification of the water blocking agent inside both nozzles is prevented. You.
[0022]
According to a fourth aspect of the present invention, in the water blocking agent applying jig of the third aspect, the center nozzle is formed to be concave, and the side nozzle is formed to protrude.
[0023]
According to the above configuration, the tip of the side nozzle serves as a cap to cover the recess of the center nozzle, and each outlet of each nozzle is closed.
[0024]
According to a fifth aspect of the present invention, in the water stopping agent application jig according to any one of the first to fourth aspects, the jig body is provided with a water-repellent coating. I do.
[0025]
According to the above configuration, coating with a water-repellent substance such as a fluororesin prevents water in the air from entering the jig body, and solidifies a water-stopping agent such as silicone. To prevent the nozzle from clogging.
[0026]
According to a sixth aspect of the present invention, an intermediate member of the waterproofing agent application jig according to any one of the first to fifth aspects is inserted into a wire harness, and the opening and closing member is positioned outside the wire harness. The water-stopping agent is discharged from the discharge port when the water-stopping agent application jig is withdrawn, and the water-stopping agent is simultaneously applied to the inside and outside of the wire harness.
[0027]
According to the above configuration, the wire harness is divided into two by inserting the intermediate member of the waterproofing agent application jig into the wire harness, and the wire harness is opened and closed on both sides by positioning the opening / closing member outside the wire harness. It is housed in the space inside the member, and when extracting the waterproofing agent application jig from the wire harness, the waterproofing agent is discharged from the discharge port of the center nozzle and the discharging port of the side nozzle, and the inside of the wire harness is discharged. A waterproof agent is applied to the outside.
[0028]
According to a seventh aspect of the present invention, in the method for waterproofing a wire harness according to the sixth aspect, the waterproof portion of the wire harness is supported in a floating state by a wiring jig, and the waterproofing agent applying jig is supported by the wiring harness. It is characterized by being inserted into the wire harness.
[0029]
According to the above configuration, the wire harness is supported in a floating state by the wiring jig erected at a predetermined position on the wiring board, so that the waterproofing agent application jig is inserted under the wire harness. As a result, the waterproofing agent can be applied from the bottom to the top of the wire harness without any remaining paint.
[0030]
According to an eighth aspect of the present invention, in the method for waterproofing a wire harness according to the sixth aspect, after the wire harness is divided into two parts and expanded in a flat shape, the waterproofing agent application jig is placed inside the wire harness. It is characterized by being inserted into.
[0031]
According to the above configuration, the wire harness is sorted and expanded in a flat shape, so that the water stopping agent can be uniformly applied to the inside and outside of the wire harness, and the water stopping agent can evenly penetrate between the electric wires. Can be.
[0032]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific examples of the embodiments of the present invention will be described in detail with reference to the drawings.
1 to 5 show one embodiment of a waterproofing agent application jig and a method for waterproofing a wire harness according to the present invention.
[0033]
The waterproofing agent application jig 10 shown in FIG. 1 is used in the manufacturing process of the wire harness 35 (FIG. 3). After the waterproofing agent is applied to the wire harness 35, the wire harness 35 is inserted through the waterproof grommet 40 (FIG. 5) in the exterior component mounting step.
[0034]
Here, the manufacturing process (not shown) of the wire harness 35 will be briefly described. The manufacturing process of the wire harness 35 includes a plurality of processes, and includes a preprocess, a subassembly process, a wiring process, a waterproofing agent application process, an exterior component mounting process, and the like.
[0035]
The pre-process is a step of cutting the electric wire 36 (FIG. 3), peeling off the insulation coating, and then crimping the terminal to the core portion of the electric wire 36 to produce the electric wire 36 with the terminal. There are many types of wires 36 with terminals that differ in the length and thickness of the wires 36, the size and shape of the terminals, and the like. The electric wire 36 with a terminal is used for producing a sub-harness in a sub-assembly process.
[0036]
The sub-assembly step is a step of combining various electric wires 36 in units of connectors, housing terminals in a terminal housing chamber of the connector housing, and producing a plurality of sub-harnesses constituting the wire harness 35.
[0037]
In the wiring step, a plurality of sub-harnesses prepared for each connector are connected using a plurality of fork-shaped wiring jigs 31 (FIG. 3) erected on the wiring table 30 (FIG. 3). In this step, the wiring harness 35 (FIG. 3) is produced by two-dimensionally arranging the wire harness 35 (FIG. 3) so as to substantially conform to the arrangement of the vehicle.
[0038]
The exterior component attaching step is a process of attaching a wire harness 35 (FIG. 5) to exterior components such as a harness protector (not shown) for protecting the wire harness 35 from interference with the outside and a waterproof grommet 40 (FIG. 5) with tape or the like. .
[0039]
The waterproofing agent application step is a step after the wiring step and a step before the exterior part attaching step. In this step, the wire harness 35 inserted into the grommet 40 is waterproofed. The waterproofing process is a process of applying a waterproofing agent to the wire harness 35 using the waterproofing agent application jig 10.
[0040]
In the waterproofing agent application step, the waterproofing portion of the wire harness 35 is supported in a floating state by using the fork-shaped wiring jig 31 used in the wiring step, and the pin-shaped jig 32 ( After the wire harness 35 is arranged in a flat shape using the width correcting jig 33 (FIG. 3), the waterproofing agent 42 is removed using the waterproofing agent application jig 10. Apply.
[0041]
As the water stopping agent 42 (FIG. 4), a silicon synthetic resin (hereinafter, referred to as silicone) excellent in heat resistance, insulation, water repellency and the like is suitably used. This is because silicone has water-stopping agent 42 in which methyl groups are arranged on the surface and the contact angle with water exceeds 90 °, so that the adhesion of water is small and the water repellent is particularly excellent in water repellency.
[0042]
The silicone is accommodated in a dispenser (not shown), and is supplied to the water stopping agent applying jig 10 via a transfer hose (not shown) by the air pressure of an air source (not shown). Note that, instead of the dispenser and the air source, a tube-shaped replaceable cartridge containing silicone can be used. When discharging the silicone from the water-stopping agent applying jig 10, the power of the dispenser is switched from OFF to ON.
[0043]
As shown in FIG. 1 again, the waterproofing agent application jig 10 includes a jig main body 15, an adapter 12, and an air hose 13. A transport hose (not shown) for supplying silicone from the dispenser to the waterproofing agent application jig 10 is connected to the adapter 12.
[0044]
The air hose 13 is a flexible hose for supplying silicone from the body 16 of the jig body 15 to the side nozzle 26. One end of the air hose 13 is connected to the body 16, and the other end of the air hose 13 is connected to the back of a side nozzle 26 formed on the opening / closing member 18.
[0045]
The jig main body 15 includes a metal body 16, a resin intermediate member 17, and a resin opening / closing member 18. The reason why the intermediate member 17 and the opening / closing member 18 are made of resin is that the wire harness 35 is damaged when the jig body 15 is inserted into the wire harness 35 (FIG. 3) or when the jig body 15 is pulled out from the wire harness 35. This is so as not to attach them. Also, it is lightweight and easy to handle.
[0046]
On the base end side of the opening / closing member 18, a U-shaped or inverted C-shaped operation lever 22 is provided. The operation lever 22 is for opening and closing the opening / closing member 18, and the opening / closing member 18 can be easily opened by gripping the operation lever 22 with a thumb and forefinger. The operation lever 22 and the body 16 are connected by a coil spring (elastic member) 23.
[0047]
The body 16 has a columnar shape, and the adapter 12 is attached to the upper surface 16a. A rod-shaped intermediate member 17 is attached to the lower surface 16b of the body 16 in a sealed state. An L-shaped mounting bracket 19 is fixed to the front 16c and the back of the body 16. One end of the mounting bracket 19 is fixed to the base end side of the opening / closing member 18 with a screw 20, and the other end is mounted on the front surface 16 c and the back surface of the body 16 with pins. For this reason, the opening / closing member 18 is pivotally supported by a pin, and operates so that opening and closing are possible.
[0048]
The intermediate member 17 has a proximal end attached to the body 16 and a distal end extending straight downward. A transport hole (not shown) for transporting the silicone is formed inside the intermediate member 17. A center nozzle 25 is integrally formed on the distal end side of the intermediate member 17, and a pair of discharge ports 25a and 25b (FIG. 2) for discharging silicone horizontally are formed in the center nozzle 25.
[0049]
The discharge ports 25a, 25b are formed so as to face the opening / closing members 18, 18 on both sides. The reason why the discharge ports 25a and 25b are formed in the horizontal direction is that the water stopping agent 42 (FIG. 4) is provided inside the wire harness 35 when the water stopping agent application jig 10 is pulled out from the wire harness 35 (FIG. 3). ) Is applied. The application of the waterproofing agent 42 inside the wire harness 35 is a feature of the present invention.
[0050]
The intermediate member 17 is formed to a length that can be inserted under the wire harness 35. The wire harness 35 is preliminarily separated into two by a pin-shaped jig 32 (FIG. 3) erected on the wiring stand 30 (FIG. 3). There is no worry about scratching.
[0051]
The opening / closing member 18 has a plate shape, is disposed on both sides of the intermediate member 17, and is attached to the body 16 via a fitting 19 so as to be openable and closable. The opening / closing member 18 is formed to have the same length as the intermediate member 17, and can accommodate the wire harness 35 in the inner space 21.
[0052]
The opening / closing member 18 is for holding and holding the wire harness 35 divided into two by the intermediate member 17. With the opening / closing member 18 opened, the intermediate member 17 is inserted into the wire harness 35. The waterproofing agent application jig 10 is extracted with the opening / closing member 18 closed.
[0053]
A metal operation lever 22 is screwed to the base end side of the opening / closing member 18. Since the operation lever 22 is bent outward, it is easy to pinch with two fingers, so that the opening and closing operation can be easily performed. The operation lever 22 is made of metal in order to improve the strength of the operation lever 22 and prevent breakage.
[0054]
Since the coil spring 23 connecting the operating lever 22 and the body 16 is mounted in a compressed state, the compression reaction force of the coil spring 23 pushes the operating lever 22 in the opening direction, and the opening / closing member 18 is operated by leverage. Is biased in the closing direction.
[0055]
The reason why the coil spring 23 is provided to urge the distal end side of the opening / closing member 18 is that the water stopping agent applying jig is held while holding the electric wire 36 (FIG. 3) when the water stopping agent applying jig 10 is extracted. This is for expanding the wire harness 35 in the direction in which the wire harness 35 is extracted. However, if the width correction jig 33 (FIG. 3) described later is provided, the wire harness 35 can be expanded to a narrow width. Is also good. That is, the configuration in which the coil spring 23 is provided is particularly effective when the width correcting jig 33 is not provided.
[0056]
A side nozzle 26 made of an elastic member such as synthetic rubber or an elastomer is fixed to the inner surface on the distal end side of the opening / closing member 18 so as to protrude inward. The side nozzle 26 has a truncated cone shape, and the side surface is formed on an inclined surface 27. By forming the side nozzle 26 in the shape of a truncated cone, the waterproofing agent application jig 10 can be smoothly extracted from the wire harness 35.
[0057]
The discharge ports 26a, 26b of the side nozzle 26 face one of the discharge ports 25a, 25b of the center nozzle 25, and when the opening / closing member 18 is in the closed state, the discharge ports 25a, 25b, 26a, The discharge ports 25a, 25b, 26a, 26b of both nozzles 25, 26 are closed in a hermetically sealed state when the nozzles 26b are joined together (FIG. 2).
[0058]
The reason why the side nozzle 26 is made of an elastic member is to use the tip of the side nozzle 26 as a cap to close the recessed discharge ports 25a and 25b of the center nozzle 25 in a sealed state, This is because when the side nozzle 26 comes into contact with the center nozzle 25, the impact is reduced and breakage is prevented.
[0059]
This prevents moisture from entering the inside of the discharge ports 25a, 25b, 26a, 26b, and it is necessary to close the discharge ports 25a, 25b, 26a, 26b with tape or the like when the operation of applying the waterproofing agent is completed. Disappears. In addition, the operator's fingers and the like are not contaminated with the waterproofing agent 42 (FIG. 4), and the material cost of the tape is reduced.
[0060]
The silicone is simultaneously discharged from a total of four discharge ports 25a, 25b, 26a, 26b of a pair of discharge ports 25a, 25b of the center nozzle 25 and the discharge ports 26a, 26b of the side nozzles 26, 26 on both sides, and the wire harness is discharged. 35 are applied simultaneously to the inside and outside. Thereby, the coating workability is improved as compared with the conventional coating jigs 50 and 60 that can only be coated on one side, and the waterproofing agent 42 can be coated not only on the outside but also on the inside. Eliminating the electric wire for permeating the liquid agent 42 into the interior becomes unnecessary. It is also a feature of the present invention that a waterproof agent is simultaneously applied to the outer surfaces on both sides of the wire harness 35.
[0061]
The body 16, the intermediate member 17 having the center nozzle 25, and the opening / closing member 18 having the side nozzle 26 are coated with a water-repellent fluororesin. For this reason, the natural solidification of the water stopping agent 42 is prevented, the stable discharge of the water stopping agent 42 is maintained, the frequency of overhaul is reduced, and the maintainability is improved.
[0062]
Next, a method of applying a waterproofing agent (waterproofing method) to the wire harness 35 using the waterproofing agent applying jig 10 will be described.
As shown in FIG. 3, the application of the water stopping agent 42 is performed in the water stopping agent applying step as described above. A plurality of fork-like wiring jigs 31 are erected at predetermined positions on the wiring table 30 (only one is shown in the figure), and both ends of the wire harness 35 are floated by the wiring jigs 31. It is supported in the state.
[0063]
The portion of the wire harness 35 to be waterproofed is separated into two parts by a pin-shaped jig 32 erected on the wiring board 30. By dividing the wire harness 35 into two using the pin-shaped jig 32, the electric wires 36 can be easily spread flat.
[0064]
One side of the wire harness 35 is sandwiched by an inverted U-shaped width correction jig 33. The width correcting jig 33 is for aligning the electric wires 36 in a narrow width. Thereby, the water stopping agent 42 can be uniformly applied without unevenness so that no gap is generated between the electric wires 36.
[0065]
If the operation lever 22 and the body 16 are connected by a coil spring 23 and the distal end side of the opening / closing member 18 is urged in the closing direction by the compression reaction force of the coil spring 23, it is inserted into the wire harness 35. When the waterproofing agent application jig 10 is pulled up in the pulling-out direction, the electric wires 36 sandwiched between the opening and closing members 18 on both sides are spread, and the waterproofing agent 42 can be uniformly applied between the electric wires 36. Therefore, the jig 33 for hand kneading and the width correction for spreading the electric wire becomes unnecessary, and the waterproof device 53 shown in the section of the prior art is also unnecessary, so that the workability of applying the waterproofing agent can be improved.
[0066]
Next, with the opening / closing member 18 opened, the intermediate member 17 of the waterproofing agent application jig 10 is inserted inside the sorted wire harness 35, and the opening / closing members 18 on both sides are kept in the state where the wire harness 35 is sorted. To hold the wire harness 35. Then, the water-stopping agent application jig 10 is pulled up in the pulling-out direction, and simultaneously the water-stopping agent is provided from the center nozzle 25 provided at the front end side of the intermediate member 17 and the side nozzle 26 provided at the front end side of the opening / closing member 18. Then, the waterproofing agent 42 is applied to the inside and outside of the wire harness 35.
[0067]
FIG. 4 shows a state in which the waterproofing agent application jig 10 inserted into the wire harness 35 is being pulled up. Simultaneously with lifting the waterproofing agent application jig 10, the waterproofing agent 42 is discharged from four outlets 25 a, 25 b, 26 a, 26 b (FIG. 2) of the center nozzle 25 and the side nozzle 26, and the sorted left and right sides are separated. The waterproof agent 42 is uniformly applied to the inside and outside of each of the two rows of electric wires 36.
[0068]
FIG. 5 shows a state in which the wire harness 35 in which the flexible sheet 37 is wrapped around the waterproof portion to which the waterproofing agent 42 is applied is attached to the rubber waterproof grommet 40. The grommet 40 is attached to a door panel or a vehicle body panel (not shown) to close the gap between the wire harness 35 and the panel, but does not close the gap between the electric wires 36 constituting the wire harness 35.
[0069]
Therefore, when there is a gap between the electric wires 36, rainwater may enter the vehicle from outside the vehicle along the electric wires 36. However, if the wire harness 35 is subjected to the prevention treatment using the above-described water-stopping agent application jig 10 of the present invention, the silicone penetrates into the gap between the electric wires 36 and the gap is closed, so that the infiltration of rainwater is prevented. can do.
[0070]
【The invention's effect】
As described above, according to the first aspect of the present invention, the waterproofing agent application jig includes an intermediate member inserted inside the wire harness, and an opening / closing member positioned on both sides of the intermediate member to hold the wire harness from the outside. Since a pair of discharge ports are provided in the intermediate member and a discharge port is provided in the opening / closing member, when the waterproofing agent application jig inserted into the wire harness is pulled up in a direction to pull out, each discharge port is provided. The waterproofing agent discharged from the outlet is applied to the inside and outside of the wire harness. Therefore, the water-stopping agent can be uniformly and uniformly applied to the wire harness by simply inserting and removing the water-stopping agent application jig, and the workability of the water-stopping agent application is improved.
[0071]
According to the second aspect of the present invention, since the distal end side of the opening / closing member is urged in the closing direction, when the waterproofing agent applying jig is pulled up from the wire harness, the electric wires separated to the left and right are moved in the pulling up direction. spread. Therefore, a width correcting jig for expanding the wire harness is not required, and a hand rubbing operation or the like for permeating the waterproof agent is not required, and the workability of applying the waterproof agent is further improved.
[0072]
According to the third aspect of the present invention, since the center nozzle and the side nozzle are located to face each other, each discharge port is closed when the opening / closing member is in the closed state. Therefore, it is possible to prevent the water-stopping agent inside the nozzle from solidifying naturally, thereby improving maintainability.
[0073]
According to the fourth aspect of the invention, the protruding tip of the side nozzle is fitted into the recess of the center nozzle, and each discharge port is closed. Therefore, there is no need to unwind the tape for closing the discharge port, the material cost of the tape is eliminated, the water-stopping agent does not adhere to the fingers and the like of the operator, and the workability of applying the water-stopping agent is improved. .
[0074]
According to the fifth aspect of the present invention, since the jig body is provided with the water-repellent coating, the moisture in the air is repelled by the coating, and the water may enter the jig body. Will be blocked. Therefore, it is possible to prevent the water stopping agent remaining in the nozzle from solidifying naturally, and the maintenance of the water stopping agent application jig is improved.
[0075]
According to the sixth aspect of the present invention, when the waterproofing agent application jig inserted into the wire harness is extracted, the waterproofing agent is discharged from the center nozzle and the side nozzle to stop inside and outside the wire harness. Since the liquid medicine is simultaneously applied, the water-stopping agent can be applied by reciprocating operation of inserting and removing the water-stopping agent application jig. Therefore, the same effect as the effect of the invention described in claim 1 is obtained, and the workability of applying the water stopping agent can be greatly improved.
[0076]
According to the seventh aspect of the invention, by supporting the wire harness in a floating state by using the wiring jig, the waterproofing agent applying jig can be inserted below the wire harness. Therefore, the waterproofing agent can be applied to the wire harness without leaving unpainted, and the workability of applying the waterproofing agent can be improved.
[0077]
According to the eighth aspect of the present invention, the waterproofing agent applied to the inside and outside of the wire harness can easily permeate between the electric wires by sorting and flattening the wire harness. Therefore, the water stopping agent can be uniformly applied without unevenness, and the waterproofness of the wire harness is improved.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a waterproofing agent application jig according to the present invention.
FIG. 2 is an enlarged view of a center nozzle and side nozzles of the waterproofing agent application jig shown in FIG.
FIG. 3 is a perspective view for explaining an embodiment of a method for waterproofing a wire harness according to the present invention.
FIG. 4 is a front view showing a state in which the waterproofing agent application jig inserted into the wire harness is being pulled up.
5 is a cross-sectional view showing a state where the wire harness shown in FIG. 4 is mounted on a grommet.
6A and 6B show an example of a conventional waterproofing method of a wire harness, in which FIG. 6A is a perspective view showing a state in which a waterproof agent is applied to the wire harness, and FIG. FIG. 6 is a partial cross-sectional view showing a state where
FIG. 7 is a partial cross-sectional view showing another example of a conventional method of waterproofing a wire harness, showing a state in which a waterproof agent is applied to one surface of the wire harness.
[Explanation of symbols]
10 Waterproofing agent application jig
15 Jig body
16 Body
17 Intermediate members
18 Opening / closing members
22 Operation lever
23 Coil spring
25 Center nozzle
25a, 25b, 26a, 26b outlet
26 Side nozzle
31 Wiring jig
35 wire harness
36 electric wires
42 Waterproofing agent

Claims (8)

In a waterproofing agent application jig for applying a waterproofing agent to a wire harness,
The jig main body includes an intermediate member inserted into the inside of the wire harness, and an opening / closing member positioned on both sides of the intermediate member to hold the wire harness from the outside. Discharge ports are provided, discharge ports are respectively provided on the front end sides of the opening and closing members on both sides, and the water-stopping agent is discharged simultaneously from each of the discharge ports. The water stopping agent applying jig according to claim 1, wherein a tip end side of the opening / closing member is urged in a closing direction by an urging means. A center nozzle including the discharge port of the intermediate member and a side nozzle including the discharge port of the opening / closing member are located opposite to each other, and each discharge port is closed when the opening / closing member is closed. The water stopping agent application jig according to claim 1 or 2, wherein The water stopping agent applying jig according to claim 3, wherein the center nozzle is formed to be concave, and the side nozzle is formed to protrude. The water-stopping agent application jig according to any one of claims 1 to 4, wherein the jig body is provided with a water-repellent coating. An intermediate member of the water-stopping agent applying jig according to any one of claims 1 to 5, is inserted into a wire harness, the opening / closing member is positioned outside the wire harness, and the water-stopping agent applying jig is placed. A method for waterproofing a wire harness, comprising: discharging the waterproofing agent from the discharge port when extracting the waterproofing agent; and simultaneously applying the waterproofing agent to the inside and outside of the wire harness. 7. The waterproofing method for a wire harness according to claim 6, wherein the waterproofing portion of the wire harness is supported by a wiring jig in a floating state, and the waterproofing agent application jig is inserted into the wire harness. 7. The method for waterproofing a wire harness according to claim 6, wherein the water harness applying jig is inserted into the wire harness after the wire harness is sorted into two parts and expanded in a flat shape.

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