JP2008251345A - Water-stopping device, and water-stopping method for grounding wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-stopping device for a grounding wire capable of effectively stopping water from the grounding wire irrespective of the length and diameter of the wire, and to provide a water-stopping method for the grounding wire using the same water-stopping device. <P>SOLUTION: The water-stopping device is a device for stopping water from the grounding wire having a conductor, a covering material arranged on the periphery of the conductor, and a terminal crimped and fixed on one terminal end of the conductor, and the water-stopping device comprises a water-stopping agent supply means for supplying a water-stopping agent in the vicinity of a boundary between the conductor and the covering material on a crimping section which crimps and fixes a conductor of the terminal, a die 30 wherein a first storage section 39 for storing the terminal, the crimping section, and its vicinity of the crimping section is prepared, and a pressurizing means for making the water-stopping agent penetrate into the inside of the covering material by supplying and pressurizing air from one terminal side to the inside of the covering material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

 TECHNICAL FIELD The present invention relates to a water stop treatment apparatus for water stop treatment of a terminal of an earth wire provided in an engine room of an automobile, and a water stop treatment method for an earth wire using the same. The present invention relates to a water stop treatment device for a grounding wire that reliably prevents water from entering the terminal, and a method for water stop treatment of a grounding wire using the same. Is.

 Generally, a grounding wire is connected to a grounding part (such as an automobile body) in a state where a connection terminal that is crimped and fixed to the terminal is exposed. For this reason, when water is applied to the grounding wire, the water enters the inside of the wire from the portion (crimped part) that is crimped and fixed to the terminal wire, and this water travels along the inside of the coating material, and this grounding wire is connected. If the product enters an internal device, it may adversely affect the normal operation of the internal device. Therefore, it is necessary to perform a treatment (water stop treatment) for preventing water from entering the inside of the electric wire in the crimping portion of the grounding electric wire.

 Conventionally, as a method of applying a water stop treatment to the grounding wire, a method of molding a resin so as to cover the crimp portion of the grounding wire has been disclosed. In this method, not only labor and large equipment are required for the molding, but also the shape of the resin mold portion becomes large, and there is a problem that it is difficult to perform the routing work.

Therefore, a water-stopping agent is supplied to one end of the grounding wire, and the air inside the covering material of the grounding wire is sucked from the other end to reduce the pressure, so that the water-stopping agent penetrates inside the covering material. The water stop processing method (for example, refer patent document 1) to be performed and the water stop processing apparatus (for example, refer patent document 2) used for this water stop processing method are proposed.
JP 2004-355851 A JP 2006-202676 A

 However, in the methods disclosed in Patent Document 1 and Patent Document 2, a water-stopping agent is supplied to one end of the grounding wire, and air inside the covering material of the grounding wire is sucked from the other end. In order to permeate the water-stopping agent into the inside of the coating material by reducing the pressure, when a water-stopping treatment is applied to a long or large-diameter wire, a device for sucking the air inside the coating material is a major factor. In addition, it takes time to sufficiently penetrate the water-stopping agent into the inside of the covering material, and as a result, there is a problem that the processing cost is high.

 The present invention has been made in view of the above circumstances, and the water stop of the ground wire that can efficiently perform the water stop treatment of the ground wire regardless of the length or diameter (wire diameter) of the wire. It aims at providing the water stop processing method of a processing device and the electric wire for earth | grounds using the same.

 The water-stop treatment device of the present invention is a water-stop treatment device for water-stopping a conductor, a covering material provided around the conductor, and a grounding electric wire having a terminal fixed to one end of the conductor by crimping. A water-stopping agent supplying means for supplying a water-stopping agent to the vicinity of the boundary between the conductor and the covering material in a crimping portion where the conductor of the terminal is crimped and fixed, the terminal, the crimping portion and the vicinity thereof And a pressurizing means for infiltrating the waterstop agent into the inside of the covering material by sending air from the one end side to the inside of the covering material and pressurizing the mold. And.

It is preferable that the mold includes a sealing means for sealing the housing portion.
Preferably, the other end of the grounding wire is provided with a flow rate detecting means for detecting the flow rate of air, and the mold is provided with a receiving portion for receiving the other end of the grounding wire and the vicinity thereof.

 The water-stop treatment method of the present invention is a water-stop treatment method for water-stopping a conductor, a covering material provided around the conductor, and a grounding wire having a terminal fixed to one end of the conductor by pressure bonding. In the terminal, a water-stopping agent supplying step for supplying a water-stopping agent to the crimping portion fixed to the electric wire by crimping, and by sending air from the one terminal side to the inside of the covering material and pressurizing, And a pressurizing step for allowing the water-stopper to permeate the inside of the covering material.

It is preferable to perform the pressurizing step by arranging the terminal, the crimping portion and the vicinity thereof in a sealed space.
It is preferable that a flow rate detecting step of detecting a flow rate of air at the other end of the ground wire is provided.

 According to the water stopping apparatus for grounding wire of the present invention, the grounding wire having a conductor, a covering material provided around the conductor, and a terminal fixed to one end of the conductor by crimping is stopped. A water-stop treatment device for processing, a water-stop agent supply means for supplying a water-stop agent to the vicinity of the boundary between the conductor and the covering material in a crimping portion where the conductor of the terminal is crimped and fixed, and the terminal, A die provided with an accommodating portion for accommodating the crimping portion and the vicinity thereof, and air is fed into the inside of the covering material from the one end side to pressurize the waterproofing agent inside the covering material. Therefore, regardless of the length and diameter (wire diameter) of the electric wire, it is possible to efficiently perform the water stop treatment of the grounding electric wire without using a large-scale device.

 According to the water stopping method for a grounding electric wire of the present invention, a grounding electric wire having a conductor, a covering material provided around the conductor, and a terminal fixed to one end of the conductor by crimping is stopped. A water stop treatment method for processing, a water stop agent supplying step for supplying a water stop agent to a crimping portion fixed to a wire by crimping at the terminal, and air is sent from the one end side to the inside of the covering material. And a pressurizing step for infiltrating the waterproofing agent into the inside of the covering material by pressurizing with a wire, so that it is efficient without using a large-scale device regardless of the length and diameter (wire diameter) of the electric wire. In addition, it is possible to perform a water stop treatment of the grounding wire.

The best mode of the water stop processing apparatus for the grounding wire and the water stop processing method for the grounding wire of the present invention will be described.
This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the present invention unless otherwise specified.

FIG. 1 is a schematic view showing an example of an earth wire that is subjected to a water stop treatment by the water stop treatment device for the ground wire and the water stop treatment method for the ground wire according to the present invention. FIG. (B) is a front view. FIG. 2: is the schematic which shows one Embodiment of the water stop agent supply apparatus which comprises the water stop processing apparatus of the earth | ground electric wire of this invention, (a) is a front view, (b) is a top view. FIG. 3 is a schematic perspective view showing an embodiment of a mold constituting the water stop treatment device for the grounding wire of the present invention. FIG. 4 is a schematic perspective view showing an embodiment of a mold constituting the water stop device for an earthing wire according to the present invention.
A grounding wire 10 shown in FIG. 1 is an insulated wire roughly composed of a conductor 11, a covering material 12 provided around the conductor 11, and a terminal 13 fixed by crimping to one end of the conductor 11. is there. The conductor 11 is formed by twisting a plurality of conductive wires, and although the conductive wires are in close contact with each other, there is a slight gap between the conductive wires. There is a risk that water may enter the electric wire through the gap. In the grounding wire 10, the covering material 13 at one end is removed, one end of the conductor 11 is exposed, and the terminal 13 is fixed to the exposed portion of the conductor 11 by crimping. Here, a portion where the conductor 11 of the terminal 13 is fixed by crimping is referred to as a crimping portion 14.

(Water stop device for grounding wire)
The water stop treatment device for the grounding electric wire of this embodiment is configured to supply a water stopping agent to the vicinity of the boundary between the conductor 11 and the covering material 12 (dashed line portion in FIG. 1) in the crimping portion 14 of the terminal 13 of the grounding electric wire 10. Liquid agent supply means 20, a terminal 30, a crimping portion 14, and a mold 30 having an accommodating portion for accommodating the vicinity thereof, and air is sent from one terminal side of the grounding wire 10 to the inside of the covering material 12 and pressurized. Thus, it is generally configured from a pressurizing means (not shown) for allowing the water-stopping agent to permeate inside the covering material 12.

The water-stopping agent supplying means 20 is provided on the base 21 and one surface 21a of the base 21, and fixing means 22 and 23 for fixing the terminal on the side where the terminal 13 of the grounding wire 10 is crimped and fixed to the one surface 21a. And injection means 24 for quantitatively injecting (dropping) the water-stopping agent.
As the fixing means 22, a clamp or the like that fixes the crimping portion 14 of the terminal 13 of the ground wire 10 is used. Further, as the fixing means 23, a clamp or the like for fixing the covering material 12 of the grounding wire 10 is used.
As the injection means 24, a gun-type injector having a nozzle 25 for quantitatively injecting (dropping) a water-stopping agent having fluidity in the vicinity of the boundary between the conductor 11 and the covering material 12 in the crimping portion 14 at the tip thereof. Is used.

The mold 30 includes an upper mold 31 and a lower mold 32 which are connected to be opened and closed by an opening / closing mechanism such as a hinge.
The upper mold 31 houses the terminal 13 of the grounding wire 10, the first recess 33 for housing the crimping portion 14 and the vicinity thereof, and the terminal on the side where the terminal 13 of the grounding wire 10 is not crimped and fixed. A second recess 34 is provided.
The lower mold 32 accommodates the terminal 13 of the grounding wire 10, the third recess 35 for housing the crimping portion 14 and the vicinity thereof, and the terminal on the side where the terminal 13 of the grounding wire 10 is not crimped and fixed. For this purpose, a fourth recess 36 is provided.
Further, the third recess 35 is surrounded by a sealing member 37 such as a packing made of a special material, and the first accommodation for detachably accommodating the terminal 13, the crimping portion 14 and the vicinity thereof of the ground wire 10. A portion 39 is provided. Further, the fourth recess 36 is surrounded by a sealing member 38 such as a packing made of a special material, and a second terminal for detachably accommodating the terminal on the side where the terminal 13 of the grounding electric wire 10 is not crimped and fixed. Two accommodating portions 40 are provided.

 In this mold 30, by combining the upper mold 31 and the lower mold 32, the first concave portion 33 and the third concave portion 35 are combined to form one space by the first concave portion 33 and the first accommodating portion 39. The second recess 34 and the fourth recess 36 are combined to form one space by the second recess 34 and the second accommodating portion 40.

The covering portion (the portion where the covering material 12 is provided) of the grounding electric wire 10 is fitted into the first concave portion 33 of the upper mold 31 without any gap, and the terminal 13 and the crimping portion 14 of the grounding electric wire 10 and the vicinity thereof are removed. A guide groove 41 is provided for guiding the portion straight out of the first recess 33. Similarly, the covering portion of the ground wire 10 is fitted into the second recess 34 of the upper die 31 without any gap, and the portion other than the other end of the ground wire 10 is guided straight out of the second recess 34. Guide grooves 42 are provided.
The sizes of the guide grooves 41 and 42 are appropriately adjusted according to the outer diameter of the covering portion in order to lock the covering portion of the ground wire 10 without any gap.

Similarly, the covering portion of the ground wire 10 is fitted into the third recess 35 of the lower mold 32 without any gap, and the portions other than the terminal 13, the crimping portion 14, and the vicinity of the ground wire 10 are outside the third recess 35. A guide groove 43 for guiding straightly is provided. Similarly, the covering portion of the grounding wire 10 is fitted into the fourth recess 36 of the lower mold 32 without a gap, and the portion other than the other end of the grounding wire 10 is guided straight out of the fourth recess 36. A guide groove 44 is provided.
The sizes of the guide grooves 43 and 44 are appropriately adjusted according to the outer diameter of the covering portion in order to lock the covering portion of the ground wire 10 without any gap.

The side surface 32 a of the lower mold 32 is provided with an air introduction pipe 45 that is provided inside the lower mold 32 and connected to a passage (not shown) that communicates with the first housing portion 39.
And, by sending air into the first housing part 39 to the terminal on the side opposite to the side connected to the lower mold 32 of the air introduction pipe 45, the inside of the first housing part 39 is pressurized, Pressurizing means (not shown) is connected to the terminal 12 where the terminal 13 of the grounding wire 10 accommodated in the first accommodating portion 39 is crimped and fixed to send air into the covering material 12 and pressurize it. ing. As the pressurizing means, for example, a compressed air generator such as an air compressor is used.

Further, in the middle of the air introduction pipe 45, in order from the pressurizing means side, a pressure control means 46 for controlling the pressure of the air fed into the first housing part 39, the flow rate of the air fed into the first housing part 39 and the first flow rate. A flow rate detecting means 47 for detecting the flow rate of the air leaking from the one accommodating portion 39 is provided.
As the pressure control means 46, for example, an electromagnetic valve such as an electropneumatic regulator capable of arbitrarily adjusting the air pressure with time in the range of 0 MPa to 0.5 MPa is used.
As the flow rate detection means 47, a general air flow meter is used.

Further, an air discharge pipe 48 connected to a passage (not shown) provided inside the lower mold 32 and leading to the inside of the second accommodating portion 40 is provided on the side surface 32b of the lower mold 32.
In the middle of the air discharge pipe 48, a flow rate detecting means 49 is provided for detecting the flow rate of air leaking from the terminal opposite to the side where the terminal 13 of the grounding wire 10 is crimped and fixed. Yes.
As the flow rate detection means 49, a general air flow meter is used.

Furthermore, the upper surface 31 c of the upper mold 31 has a detection unit inserted in a hole (not shown) provided in the upper mold 31 and communicating with the first storage unit 39. Pressure detecting means 50 is provided for detecting the pressure.
As the pressure detection means 50, a general pressure gauge having a pressure sensor as a detection unit is used.

Projections 51 and 51 projecting in a direction perpendicular to the side surfaces 31a and 31b are provided on the side surfaces 31a and 31b of the upper die 31, respectively.
On the other hand, on the side surfaces 32a, 32b of the lower mold 32, the upper mold 31 and the lower mold 32 are combined, and the locking sections 52, which are axially supported so as to be rotatable in the direction of the protrusions 51, 51 of the upper mold 31, 52 is provided.
That is, the upper mold 31 can be fixed to the lower mold 32 by combining the upper mold 31 and the lower mold 32 and engaging the engaging portions 52 and 52 with the protrusions 51 and 51. .

Further, the front surface 31d of the upper mold 31 is provided with a protrusion 53 protruding in a direction perpendicular to the front surface 31d.
On the other hand, the front surface 32c of the lower mold 32 is provided with a protrusion 54 protruding in a direction perpendicular to the front surface 32cd. Further, the protrusion 54 is fixed by a rotating shaft 56 and can be rotated in a direction parallel to the upper surface 53a of the protrusion 53 of the upper mold 31 in a state where the upper mold 31 and the lower mold 32 are combined. A stop member 55 is provided. The locking member 55 is a locking portion 55a in which a short portion is locked to the projection 53 with the rotation shaft 56 as a boundary, and a gripping portion 55b in which a long portion is gripped when the member is rotated.
In this embodiment, the sealing means for sealing the first housing part 39 and the second housing part 40 is composed of the above-mentioned protrusion 53, protrusion 54, locking part 55, and rotating shaft 56. .
That is, the upper mold 31 and the lower mold 32 are combined, the locking member 55 is rotated, and the locking portion 55a is locked to the protrusion 53, whereby the adhesion between the lower mold 32 and the upper mold 31 is increased. In addition, the first housing part 39 and the second housing part 40 can be sealed.

(Water stop method for grounding wire)
Next, with reference to FIGS. 2, 5, and 6, the ground wire water-stop treatment method using the above-described ground wire water-stop treatment apparatus will be described.
First, the terminal on the side to which the terminal 13 of the grounding wire 10 is crimped and fixed is fixed to the base 21 of the water-stopping agent supply means 20 by the fixing means 22 and 23.
Next, a predetermined amount of water-stopping agent is injected (dropped) by the injection means 24 in the vicinity of the boundary between the conductor 11 and the covering material 12 at the crimping portion 14 of the terminal 13 of the grounding wire 10 fixed to the base 21 (stopping). Liquid medicine supply process).
The amount of the water-stopper injected (dropped) is appropriately adjusted according to the length and diameter (wire diameter) of the conductor 11 of the ground wire 10.

 As the water-stopping agent, curable resins generally used for water-stop treatment of grounding wires are used, but among these resins, silicone resins are used in terms of water resistance, oil resistance, heat resistance, cold resistance, etc. preferable. Further, among these silicone resins, the viscosity at the normal temperature (23 ° C.) is 600 Pa so that the silicone resin can easily penetrate inside the covering material 12 of the ground wire 10, that is, between the conductors 11 at normal temperature (23 ° C.). -The thing in the range of ms-1000 Pa.ms is preferable. Moreover, when heating, you may use the material which has the viscosity in the range of 100 Pa.ms-5000 Pa.ms in normal temperature.

Next, the terminal 13, the crimping portion 14, and the vicinity of the grounding electric wire 10 in which the water-stopping agent is injected into the first housing portion 39 of the lower mold 32 of the mold 30 are housed and fixed, and the grounding is performed in the guide groove 43. The covering portion of the electric wire 10 is fitted.
Further, the terminal on the side where the terminal 13 of the grounding wire 10 is not crimped and fixed is housed in the second housing portion 40 of the lower mold 32 of the mold 30 and the covering portion of the grounding wire 10 is fitted in the guide groove 44. Include.

Next, the upper mold 31 and the lower mold 32 are aligned so that the covering portion of the grounding electric wire 10 is fitted in each of the guide grooves 41 and 42 of the upper mold 31.
Next, the upper die 31 is fixed to the lower die 32 by engaging the engaging portions 52, 52 with the protrusions 51, 51 of the upper die 31.

 Next, the locking member 55 is rotated and the locking portion 55a is locked to the projection 53, so that the upper die 31 and the lower die 32 are brought into close contact with each other. In a state where the portion 14 and the vicinity thereof are accommodated, the second accommodating portion 40 is sealed in a state where the first accommodating portion 39 and the terminal on the side where the terminal 13 of the ground wire 10 is not crimped and fixed are accommodated.

 Next, air is sent from the pressurizing means through the air introduction tube 45 into the first housing part 39 (in the direction of the arrow in FIG. 6), the inside of the first housing part 39 is pressurized, and the terminal 13 of the grounding wire 10 is connected. The water-stopping agent injected into the vicinity of the boundary between the conductor 11 and the covering material 12 by sending air into the inside of the covering material 12 from the terminal side fixed by pressure bonding and pressurizing the inner side of the covering material 12, that is, the conductor 11 (pressure process).

In this pressurizing step, the pressure control means 46 controls the pressure of the air sent from the pressurizing means into the first accommodating portion 39 in the range of 0 MPa to 0.5 MPa, and the flow rate detecting means 47 controls the first pressure. The flow rate of the air fed into the housing part 39 and the flow rate of the air leaked from the first housing part 39 are detected.
Thereby, the pressure of the air sent in in the 1st accommodating part 39 is suitably adjusted according to the length and diameter (wire diameter) of the conductor 11 of the electric wire 10 for earth | grounds.

Further, in the pressurizing step, the pressure in the first housing portion 39 is detected by the pressure detection means 50.
Thereby, in the state which match | combined the upper mold | type 31 and the lower mold | type 32, ie, without visually observing the mode in the 1st accommodating part 39, a water stop agent of the electric wire 10 for earthing | grounding is in the 1st accommodating part 39. It can be confirmed whether or not it penetrates the inside of the covering material 12.

Further, in the pressurizing step, the flow rate detecting means 49 detects whether there is any air leaking from the terminal on the side opposite to the side where the terminal 13 of the grounding wire 10 is crimped and fixed (flow rate detecting step).
In this flow rate detection step, when air leakage from the terminal on the side opposite to the side where the terminal 13 of the grounding wire 10 is crimped and fixed is detected, the water stop agent is the covering material 12 of the grounding wire 10. If the air leakage is not detected, on the other hand, the water-stopping agent is inside the covering material 12 of the grounding wire 10, that is, It can be determined that the conductor 11 has penetrated normally.

 According to the water stopping method for grounding wire using the water stopping device for grounding wire of this embodiment, the terminal 13 of the grounding wire 10 is crimped and fixed to the inside of the covering material 12. By supplying air and pressurizing, the water-stopping agent can be infiltrated inside the covering material 12, that is, between the conductors 11, so that a large-scale apparatus can be used regardless of the length or diameter (wire diameter) of the electric wire. The water stop treatment of the grounding wire 10 can be performed efficiently and reliably without using it.

 The water stop treatment device for an earth wire according to the present invention, and the water stop treatment method for an earth wire using the ground wire, a wire or a cable having a covering provided around a conductor, It can also be applied to water stop treatment and waterproof treatment.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows an example of the electric wire for earth | ground which is water-stop-processed by the water-stop processing apparatus of the earth | ground electric wire of this invention, and the water stop processing method of the electric wire for earth | grounds, (a) is a top view, (b) Is a front view. It is the schematic which shows one Embodiment of the water stop agent supply apparatus which comprises the water stop processing apparatus of the electric wire for earth | grounds of this invention, (a) is a front view, (b) is a top view. It is a schematic perspective view which shows one Embodiment of the principal part of the water stop processing apparatus of the electric wire for earth | grounds of this invention. It is a schematic perspective view which shows one Embodiment of the principal part of the water stop processing apparatus of the electric wire for earth | grounds of this invention. It is a schematic perspective view which shows one Embodiment of the water stop processing method of the electric wire for earth | grounds of this invention. It is a schematic perspective view which shows one Embodiment of the water stop processing method of the electric wire for earth | grounds of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Ground wire, 11 ... Conductor, 12 ... Coating | covering material, 13 ... Terminal, 14 ... Crimp part, 20 ... Water-stop agent supply means, 21 ... Base, 22, 23 ... Fixing means, 24 ... Injection means, 25 ... Nozzle, 30 ... Mold, 31 ... Upper mold, 32 ... Lower mold, 33 ... First recess , 34 ... second recess, 35 ... third recess, 36 ... fourth recess, 37, 38 ... sealing member, 39 ... first housing part, 40 ... second Accommodating portion, 41, 42, 43, 44 ... guide groove, 45 ... air introduction pipe, 46 ... pressure control means, 47, 49 ... flow rate detection means, 48 ... air discharge pipe, DESCRIPTION OF SYMBOLS 50 ... Pressure detection means, 51 ... Projection, 52 ... Locking part, 53 ... Projection, 54 ... Projection, 55 ... Locking member, 56 ... Rotation axis.

Claims (6)

A water-stop treatment device for water-stopping a conductor, a covering material provided around the conductor, and a grounding wire having a terminal fixed by crimping to one end of the conductor,
A waterproofing agent supplying means for supplying a waterproofing agent to the vicinity of the boundary between the conductor and the covering material in a crimping portion where the conductor of the terminal is crimped and fixed, and accommodating the terminal, the crimping portion and the vicinity thereof And a pressurizing means for infiltrating the waterstop agent into the inside of the covering material by sending air from the one end side to the inside of the covering material and pressurizing the mold. A water stop treatment device for grounding electric wires.  The water stop treatment apparatus for an earthing wire according to claim 1, wherein the mold includes a sealing unit that seals the housing portion.  The flow rate detecting means for detecting the flow rate of air at the other end of the grounding wire is provided, and the mold is provided with a receiving portion for receiving the other end of the grounding wire and the vicinity thereof. Item 3. A water stoppage treatment device for an earth wire according to item 1 or 2. A water-stop treatment method for water-stopping a conductor, a covering material provided around the conductor, and a grounding wire having a terminal crimped and fixed to one end of the conductor,
The water-stopping agent supplying step of supplying a water-stopping agent to the crimping portion fixed to the electric wire in the terminal, and the water-stopping agent by sending air from the one end side to the inside of the covering material and pressurizing it. And a pressurizing step for infiltrating the inside of the covering material with water.  The water stop treatment method for an electric wire for grounding according to claim 4, wherein the pressurizing step is performed by arranging the terminal, the crimping portion, and the vicinity thereof in a sealed space. 6. The water stop treatment method for an earthing wire according to claim 4, further comprising a flow rate detecting step of detecting an air flow rate at the other end of the earthing wire.

Images