JP2013161801A - Electric wire extraction structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect an electric wire 2 in a pull-out direction, a push-in direction, and a rotation direction with respect to a case 1 with simple constitution and to actualize all functions of sealing the electric wire 2 in an electric wire extraction structure such that the electric wire 2 connected to an electric circuit 10 in the case 1 is fixed to the case 1.SOLUTION: A stop ring 6 with a tongue-shaped projection is pressed in an electric wire 2 while an O ring 4 and a plain washer 5 are fitted to the electric wire 2 by insertion. An inner diameter-side projection 61 of the stop ring 6 with the tongue-shaped projection is forced to bite into a covering 22 of the electric wire 22. A CR type stop ring 7 is fitted to the electric wire 2 by insertion. The O ring 4 is fitted in a first cylindrical recessed portion 32 of the case 1, and pressed with the plan washer 5 and the stop ring 6 with the tongue-shaped projection; a tongue-shaped projection 63 of the stop ring 6 with the tongue-shaped projection is fitted to a groove portion 33a of a second cylindrical recessed portion 33 of the case 1; and an elastic lock claw part 72 of the CR type stop ring 7 is forced to bite into an inner peripheral surface of the second cylindrical recessed portion 33.

Description

  The present invention relates to an electric wire take-out structure for fixing an electric wire to a case in a state where the electric wire connected to an electric circuit in the case is pulled out from the case.

  Conventionally, as an electric wire taking-out structure, for example, there are those disclosed in Japanese Patent No. 3728642 (Patent Document 1) and Japanese Utility Model Laid-Open No. 4-127978 (Patent Document 2). In Patent Document 1, an O-ring is inserted into an outer sheath of an electric wire, and an O-ring is fitted into an O-ring housing portion of the case, and a pack-up spacer is fitted to fix the electric wire to the case. The thing of patent document 2 prevents that an electric wire pulls out from a cover by attaching an E ring to the part of the outer skin in the cover of an electric wire.

Japanese Patent No. 3728642 Japanese Utility Model Publication No. 4-127978

  In the thing of the said patent document 1, in order to protect against the force of the drawing direction with respect to an electric wire, or the pushing-in direction, it is necessary to provide the binding part and fixing member of an electric wire in a different place from an O-ring (seal structure part). . Moreover, since the thing of patent document 2 does not have the function to seal an electric wire, it is necessary to provide another sealing structure in the location where a seal is required.

  Furthermore, in both structures of Patent Document 1 and Patent Document 2, there is no rotation prevention function with respect to the rotation direction about the electric wire, and the electric wire rotates when an excessive force in the rotation direction due to twisting of the electric wire is applied. Therefore, there is a problem that the connection portion between the electric wire and the electric circuit is damaged, or the electric wire itself is disconnected.

  An object of the present invention is to realize all the functions of the protection of the drawing direction, the pushing direction, and the rotation direction of the electric wire with respect to the case, and the sealing of the electric wire with a simple configuration in the electric wire take-out structure.

  The electric wire take-out structure according to claim 1 is a case, an electric wire that is connected to an electric circuit inside the case and has an inner electric wire covered with an outer sheath, and a circular cross section provided in the case, and communicates the electric wire from the inside of the case to the outside. And a lead-out structure of the lead-out wire, wherein the lead-through portion is larger than the outer diameter of the wire, and the wire through-hole having a hole diameter larger than the outer diameter of the wire, and The wire through-hole and the bottom surface are concentric with the through-hole for the wire and are concentric to the inside of the case with a hole diameter smaller than the sum of the outer diameter of the wire and the wire diameter of the O-ring connected to the wire. Then, the first cylindrical concave portion having an inner diameter larger than that of the through hole for electric wire, and the first cylindrical concave portion and the bottom surface that are concentric with the through hole for electric wire are continuously connected to the first cylindrical concave portion. Has a large inner diameter and has a groove on the cylindrical surface. An annular O-ring groove is formed by the first cylindrical concave portion and a plain washer communicated with the electric wire, and the O-ring communicated with the electric wire is formed. An electric wire seal part that seals between the electric wire and the through hole for electric wire by being compressed in the O-ring groove, a plate-like shape, an opening part, and an inner diameter part on the inner side of the opening part that protrudes toward the center side A retaining ring with a tongue-like projection having a radially inner-side projection, a tongue-like projection projecting from the outer diameter portion of the outer circumference to the outer circumference, and an inner diameter-side projection of the retaining ring with a tongue-like projection being inserted into the outer sheath of the electric wire. The second cylinder is configured such that an elastic locking claw portion of the CR-type retaining ring is engaged with a CR-shaped retaining ring made of an elastic plate connected to the electric wire in the second cylindrical concave portion. By pulling the retaining ring with tongue-like projections into the bottom surface of the concave portion, the wire pulling coupled to the retaining ring with tongue-like projections can be performed. An axial direction movement preventing means for preventing movement in the vertical direction and the pushing direction, and the tongue-like protrusion by fitting and attaching the tongue-like protrusion of the retaining ring with the tongue-like protrusion to the groove part of the second cylindrical concave part An electric wire fixing portion including rotation preventing means for preventing rotation of the electric wire coupled to the retaining ring.

  The wire take-out structure according to claim 2 is the wire take-out structure according to claim 1, wherein the retaining ring with tongue-like protrusions has an inner diameter larger than an outer diameter of the electric wire, A first inner diameter side protrusion projecting from the inner diameter part on the opposite side, and two second inner diameter side protrusions projecting from the inner diameter part symmetrically about the first inner diameter side protrusion; It is a retaining ring with a tongue-like projection, wherein the inner diameter of the tip of the side protrusion is larger than the inner diameter of the outer sheath of the electric wire and smaller than the outer diameter of the outer envelope of the electric wire.

  The wire take-out structure according to claim 3 is the wire take-out structure according to claim 1 or 2, wherein the retaining ring with tongue-like protrusions extends from the tip of the tongue-like protrusion to the center of the retaining ring with tongue-like protrusions. Is larger than the radius of the inner diameter of the second cylindrical concave portion, and the maximum outer diameter dimension of the outer diameter portion (excluding the tongue-like projection) and the inner diameter of the second cylindrical concave portion. The difference is a retaining ring with a tongue-like projection smaller than the projecting dimension of the tongue-like projection.

  The electric wire extraction structure according to claim 4 is the electric wire extraction structure according to any one of claims 1 to 3, wherein the electric wire is a multicore shielded electric wire in which an inner electric wire and a shielded wire are covered with the outer sheath. It is characterized by being.

  According to the electric wire take-out structure of claim 1, by binding the retaining ring with a tongue-shaped protrusion having a rotation preventing function to the electric wire, and fixing the retaining ring with the tongue-shaped protrusion to the case by the CR-shaped retaining ring, Consists of axial movement prevention means and rotation prevention means, and it is possible to prevent the pulling out and pushing of the electric wire and the rotation around the axis of the electric wire at one place, and it is reliable and easy with the O-ring. It also has a seal structure with excellent chemical resistance, and it is easy to assemble with a simple structure, and space can be saved.

  According to the electric wire take-out structure of the second aspect, in addition to the effect of the first aspect, the inner diameter side protrusion of the retaining ring with tongue-like protrusions bitten into the outer cover of the electric wire does not contact the conductor in the outer cover. The conductive wire can be reliably protected from the inner diameter side protrusion, and the coupling between the electric wire and the retaining ring with the tongue-like protrusion can be ensured.

  According to the wire take-out structure of claim 3, in addition to the effect of claim 1 or 2, the tongue-like projection of the retaining ring with tongue-like projection is always fitted in the groove portion of the second cylindrical concave portion. A failure such that the tongue-shaped projection falls from the groove and the anti-rotation function cannot be maintained, or misassembly can be prevented, and a highly reliable wire take-out structure can be obtained.

  According to the electric wire take-out structure of the fourth aspect, in addition to the effects of the first to third aspects, when the retaining ring with a tongue-like protrusion is fixed to the electric wire, even if the inner diameter side protrusion penetrates the outer skin, this inner diameter side protrusion Is only in contact with the shielded wire, does not damage the internal electric wire, and does not harm the signal transmission by this multi-core shielded wire.

It is a principal part expanded sectional view of the electric wire extraction structure of embodiment of this invention. It is AA sectional drawing of FIG. It is sectional drawing and bottom view of the electric wire taking-out structure in embodiment. It is sectional drawing of the case in embodiment. It is a figure which shows the state in the middle of the assembly | attachment of the electric wire in embodiment. It is a figure which shows the retaining ring with a tongue-like protrusion in embodiment. It is a figure which shows CR type retaining ring in embodiment. It is a figure which shows the state which pushed the electric wire in the retaining ring with a tongue-shaped protrusion in embodiment. It is a figure which shows the other example of a retaining ring with a tongue-like protrusion in embodiment.

  Next, an embodiment of the electric wire take-out structure of the present invention will be described with reference to the drawings. 1 is an enlarged cross-sectional view of a main part of the wire take-out structure of the embodiment, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a cross-sectional view and a bottom view of the wire take-out structure in the embodiment, and FIG. Sectional drawing of a case and FIG. 5 are figures which show the state in the middle of the assembly | attachment of the electric wire in embodiment. 6 is a view showing a retaining ring with a tongue-like projection in the embodiment, FIG. 7 is a view showing a CR-type retaining ring in the embodiment, and FIG. 8 is a state in which an electric wire is pushed into the retaining ring with a tongue-like projection in the embodiment. FIG.

  The electric wire take-out structure according to this embodiment is obtained by assembling an electric wire for transmitting a measurement signal of a flow meter to a case attached to the flow meter, for example.

  The electric wire take-out structure of this embodiment is derived from the case 1, the electric wire 2 connected to the electric circuit 10 inside the case 1, and the electric wire 2 that is provided in the case 1 and communicates from the inside of the case 1 to the outside. It consists of a wire penetration part 3. As shown in FIG. 5, the electric wire 2 includes, in order from the outer side of the case 1, an annular O-ring 4, an annular stainless steel flat washer 5, an E-ring-shaped retaining ring 6 with a tongue-like protrusion, A CR-type retaining ring 7 is communicated. 1, FIG. 3 (a) and FIG. 5, the CR-type retaining ring 7 is shown as a position rotated by 30 ° with respect to FIG. 2 in order to show the biting state.

  The case 1 is formed of a polyphenylene sulfide resin (PPS) in a substantially rectangular shape, and the electric wire penetrating portion 3 is formed by expanding one surface of the case 1 into a columnar shape. As shown in FIG. 3, an electric circuit 10 is accommodated in the case 1, and the electric wire 2 is connected to the electric circuit 10, and the electric wire 2 is drawn out from the electric wire penetration part 3. Note that the case 1 is attached to a flow rate detection unit disposed in a pipeline (not shown).

  The electric wire 2 is a multi-core shielded electric wire in which an internal electric wire 21 and a shielded wire 23 are covered with a vinyl chloride (PVC) skin 22 and has a circular cross section.

  As shown in FIG. 4, the wire penetration part 3 has a hole substantially equal to or slightly larger than the outer diameter φ2 of the electric wire 2 (see FIG. 5) so that the sealing and fixing of the electric wire 2 cannot be intentionally impaired from the outside. It has an electric wire through hole 31 having a diameter φ31, a first cylindrical concave portion 32, and a second cylindrical concave portion 33. The hole diameter φ32 of the first cylindrical concave portion 32 is larger than the outer diameter φ2 of the electric wire 2, and is the sum of the outer diameter φ2 of the electric wire 2 and the wire diameter φ4 × 2 of the O-ring 4 (see FIG. 5). Has a smaller inner diameter than the through hole 31 for electric wires. The first cylindrical concave portion 32 is concentric with the wire through hole 31 with respect to the inside of the case 1, and the wire through hole 31 and the bottom surface are continuous. The hole diameter φ33 of the second cylindrical concave portion 33 is an inner diameter larger than that of the first cylindrical concave portion 32, and the second cylindrical concave portion 33 is concentric with the through hole 31 for the electric wire and the first cylindrical concave portion. 32 and the bottom face are continuous. Further, the second cylindrical concave portion 33 has a groove portion 33a formed in parallel with the central axis L on the inner peripheral cylindrical surface.

  As shown in FIG. 6, the retaining ring 6 with a tongue-like protrusion has a plate shape made of stainless steel and has an E-ring shape. The retaining ring 6 with the tongue-shaped protrusion includes an opening 6a, a first inner diameter-side protrusion 61 protruding from the arc-shaped inner diameter section 6b inside the opening 6a toward the center, and a first inner diameter-side protrusion 61. It has two second inner diameter side projections 62 projecting from the inner diameter portion 6b symmetrically as the center, and a tongue-shaped projection 63 projecting outward from the outer arc-shaped outer diameter portion 6c. Note that the tip of the tongue-like protrusion 63 is formed in a straight line so as to apply a force of pushing in when the wire 2 is bitten. The inner diameter φ6b of the inner diameter portion 6b is larger than the outer diameter φ2 of the electric wire 2 and smaller than the outer diameter φ71 (see FIG. 7) of the flat portion 71 of the CR-type retaining ring 7. Further, the inner diameter φ6 at the tip of the inner diameter side protrusions 61 and 62 is larger than the inner diameter φ22 (see FIG. 2) of the outer sheath 22 of the electric wire 2 and smaller than the outer diameter φ2 of the outer sheath 22 of the electric wire 2.

  As shown in FIG. 7, the CR-type retaining ring 7 is an elastic plate made of stainless steel, and has an annular flat surface portion 71 and a plurality of elastic locking claw portions 72 protruding on the outer periphery of the flat surface portion 71. . The CR-shaped retaining ring 7 is communicated with the electric wire 2 and is fitted into the second cylindrical concave portion 33 against the elastic force of the elastic retaining pawl 72, and the elastic retaining pawl portion of the CR-shaped retaining ring 7. 72 can be attached to and detached from the inner peripheral surface of the second cylindrical concave portion 33 so that the parts such as the electric wire 2 damaged during use can be repaired or replaced when the parts quantity or the assembly order is wrong. It is attached in a state of being bitten.

  At the time of assembly, the O-ring 4 and the flat washer 5 are inserted into the electric wire 2, and the retaining ring 6 with a tongue-like protrusion is attached to a jig (not shown) with the opening 6a facing upward. Then, by pushing the electric wire 2 through the opening 6 a, the inner diameter side protrusions 61 and 62 of the retaining ring 6 with the tongue-like protrusion are bitten into the outer skin 22 as shown in FIG. 8. As a result, the tongue-shaped projection retaining ring 6 is coupled to the electric wire 2 at a substantially right angle. By using a multi-core shielded wire as the wire, even if the inner diameter side projections 61 and 62 of the retaining ring 6 with tongue-like projection penetrate the outer skin 22 at the time of coupling, The electric wire 21 is not damaged. Next, the electric wire 2 is passed through the electric wire through hole 31 of the case 1, and the O-ring 4 is fitted into the first cylindrical concave portion 32. Then, the CR-type retaining ring 7 is fitted from the inner end of the electric wire 2 in a state where the elastic locking claw 72 is bent to the opposite side of the retaining ring 6 with the tongue-shaped projection, and the plain washer 6 with the retaining ring 6 with the tongue-shaped projection While pressing 5 against the O-ring 4, the retaining ring 6 with a tongue-like protrusion and the CR-shaped retaining ring 7 are fitted into the second cylindrical concave portion 33.

  With the above configuration, an annular O-ring groove is formed by the first cylindrical concave portion 32 and the flat washer 5 communicated with the electric wire 2, and the O-ring 4 is compressed by the O-ring groove so that the electric wire 2 and the electric wire are compressed. The space between the through hole 31 is sealed, and the O-ring groove formed by the first cylindrical concave portion 32 and the flat washer 5 and the O-ring 4 constitute an electric wire seal portion.

  Further, the O-ring 4, the plain washer 5, the retaining ring 6 with a tongue-shaped protrusion and the CR-shaped retaining ring 7 constitute an electric wire fixing portion, and the retaining ring with a tongue-shaped protrusion on the bottom surface of the second cylindrical recessed portion 33. 6 is prevented from moving in the pulling-out direction and the pushing-in direction of the electric wire 2 coupled to the retaining ring 6 with the tongue-like protrusion, and constitutes an axial movement preventing means. That is, when a force in the pulling direction is applied to the electric wire 2, the retaining ring 6 with the tongue-like protrusion and the flat washer 5 are stopped by the bottom surface of the second cylindrical concave portion 33 and the pulling movement is stopped. When a force in the pushing direction is applied to the electric wire 2, the elastic locking claw portion 72 of the CR-type retaining ring 7 bites into the inner peripheral surface of the second cylindrical concave portion 33 and the pushing movement is stopped. Further, by fitting the tongue-shaped projection 63 of the retaining ring 6 with the tongue-like projection into the groove 33a of the second cylindrical concave portion 33 and assembling it, the wire L is coupled around the retaining ring 6 with the tongue-shaped projection around the axis L. Rotation is prevented and constitutes a rotation prevention means.

  In addition, since the inner diameter φ6 of the tip of the inner diameter side protrusions 61 and 62 of the retaining ring 6 with tongue-like protrusion is larger than the inner diameter φ22 of the outer skin 22 of the electric wire 2 and smaller than the outer diameter φ2 of the outer skin 22, The inner diameter side protrusions 61 and 62 that are bitten into the outer skin 22 of the electric wire 2 do not come into contact with the inner electric wire 21 and the shield wire 23 in the outer skin 22, and the inner electric wire 21 and the shield wire 23 are connected from the inner diameter side protrusions 61 and 62. It can be surely protected. Moreover, the coupling | bonding of the electric wire 2 and the retaining ring 6 with a tongue-like protrusion can be ensured. In addition, excessive biting of the inner diameter side protrusions 61 and 62 with respect to the outer skin 22 of the electric wire 2 can be prevented, and the stable electric wire 2 and the retaining ring 6 with the tongue-like projection without the lack of coupling force due to the cutting of the outer skin 22 or insufficient biting. Can be secured. The biting amount of the inner diameter side protrusions 61 and 62 is preferably about half to 2/3 of the thickness of the outer skin 22.

  Further, in the retaining ring 6 with the tongue-like projection, the dimension from the tip of the tongue-like projection 63 to the center of the retaining ring 6 with the tongue-like projection is larger than the radius of the inner diameter φ33 of the second cylindrical concave portion 33. Further, the difference between the maximum value of the outer diameter dimension φ6c (see FIG. 6) of the outer diameter portion 6c (the portion not including the tongue-shaped protrusion 63) and the inner diameter φ33 of the second cylindrical concave portion 33 is the protrusion of the tongue-shaped protrusion 63. It is smaller than the dimension d (see FIG. 6). Thereby, the tongue-like projection 63 of the retaining ring 6 with the tongue-like projection is always fitted in the groove portion 33 a of the second cylindrical concave portion 33. Therefore, the tongue-shaped projection 63 does not fall out of the groove 33a, and the rotation prevention function can be reliably maintained. Further, since the retaining ring 6 with the tongue-like projection cannot be fitted into the second cylindrical concave portion 33 unless the tongue-like projection 63 is fitted in the groove portion 33a, erroneous assembly can be prevented.

  It should be noted that the opening portions of the retaining ring 6 with the tongue-like projections are prevented from being mistakenly assembled by fitting the tip portions on both sides of the opening 6a of the retaining ring 6 with the tongue-like projections into the groove 33a instead of the tongue-like projections 63. The width of the tongue-like projection 63 and the width of the groove 33a are made smaller than the width of the tip on both sides of 6a, or the length of the tip on both sides of the opening 6a entering the groove 33a. By increasing the length of 63 and the depth of the groove 33a, or by defining the dimensions so as to satisfy both conditions, it is possible to prevent erroneous assembly. Further, by providing an R shape at the base of the tongue-like projection 63, the stress applied to the tongue-like projection 63 at the time of rotation prevention is relieved, and the increase in the strength of the tongue-like projection 63 or the strength of the tongue-like projection 63 while maintaining the strength is maintained. Miniaturization can be achieved.

  The retaining ring 6 with the tongue-like projection of the above embodiment has an outer diameter portion 6c on the outer periphery or an arc shape. However, like the retaining ring 6 'with the tongue-like projection shown in FIG. It may have a diameter portion 6d. In addition, the same code | symbol is attached | subjected to the same part as the retaining ring 6 with a tongue-like protrusion. According to the retaining ring 6 ′ with tongue-like protrusion, when the electric wire 2 is attached to the jig when the electric wire 2 is fitted from the opening 6 a, the outer diameter portion 6 d made of this D-cut portion is used for positioning and easy healing. Can be attached to tools.

  Moreover, although the embodiment explained the case where the tongue-like protrusion 63 and the groove portion 33a are one, the interval between the plurality of elastic locking claw portions of the CR-type retaining ring 7 does not enter the groove portion at the same time, and the width of the groove portion is the CR shape. By making it smaller than the elastic locking claw portion of the retaining ring 7 so that it does not enter the groove portion and maintaining the holding force by the elastic locking claw portion of the CR type retaining ring 7, the tongue-like protrusion and the groove portion are A plurality can be provided.

  Although the case where the electric wire is a multi-core shielded electric wire has been described in the embodiment, it goes without saying that the present invention can be applied to other types of electric wires. Moreover, although the example of the case attached to a flowmeter was demonstrated in embodiment, it cannot be overemphasized that this invention is applicable with respect to the case and electric wire of another electric equipment.

DESCRIPTION OF SYMBOLS 1 Case 2 Electric wire 21 Inner electric wire 22 Outer skin 23 Shield wire 3 Electric wire penetration part 31 Electric wire through-hole 32 First cylindrical concave part 33 Second cylindrical concave part 33a Groove part 4 O-ring 5 Flat washer 6 Tongue ring 6a Opening portion 6b Inner diameter portion 6c Outer diameter portion 61 First inner diameter side protrusion 62 Second inner diameter side protrusion 63 Tongue protrusion 7 CR-shaped retaining ring 71 Flat portion 72 Elastic locking claw portion 10 Electric circuit

Claims (4)

A case, a wire having a circular cross section that is connected to an electric circuit inside the case and covering the inner wire with an outer skin, and a wire penetrating portion that is provided in the case and communicates with the wire from the inside of the case and leads out to the outside. A wire take-out structure,
The wire penetration part is
A through hole for an electric wire having a hole diameter larger than the outer diameter of the electric wire;
It is larger than the outer diameter of the electric wire and has a hole diameter smaller than the sum of the outer diameter of the electric wire and the diameter of the O-ring wire connected to the electric wire, and is concentric with the through hole for the electric wire with respect to the inner side of the case A first cylindrical concave portion having an inner diameter larger than the through-hole for the electric wire, the through-hole for the electric wire and the bottom being continuous,
A second cylindrical concave portion that is concentric with the through hole for the electric wire and has a larger inner diameter than the first cylindrical concave portion continuously with the first cylindrical concave portion and having a groove on the cylindrical surface. When,
Have
An annular O-ring groove is formed by the first cylindrical concave portion and a plain washer communicated with the electric wire, and the O-ring communicated with the electric wire is compressed by the O-ring groove. A wire seal portion for sealing between the wire through holes;
A ring-shaped retaining ring having a plate-like shape, having an opening, an inner diameter-side protrusion protruding from the inner diameter portion inside the opening toward the center, and a tongue-shaped protrusion protruding from the outer diameter portion of the outer periphery toward the outer periphery; ,
A coupling means in which an outer diameter side projection of the retaining ring with a tongue-like projection is engaged with an outer sheath of the electric wire;
A CR-type retaining ring made of an elastic plate connected to the electric wire is inserted into the second cylindrical recessed portion with an elastic locking claw portion of the CR-shaped retaining ring, and is formed on the bottom surface of the second cylindrical recessed portion. An axial movement preventing means for preventing movement of the electric wire coupled to the tongue-shaped projection retaining ring in the drawing direction and the pushing-in direction by sandwiching the tongue-shaped projection retaining ring, and the second cylindrical concave portion An anti-rotation means for preventing rotation of the electric wire coupled to the retaining ring with tongue-like protrusions by fitting and assembling the tongue-like protrusions of the retaining ring with tongue-like protrusions into the grooves of ,
An electric wire take-out structure characterized by comprising: The wire take-out structure according to claim 1,
The retaining ring with tongue-like projections,
An inner diameter of the inner diameter portion is larger than an outer diameter of the electric wire, and a first inner diameter side protrusion protruding from the inner diameter portion on the opposite side of the opening, and an inner diameter portion symmetrically about the first inner diameter side protrusion. A tongue-shaped protrusion-attached stopper having two second inner diameter side protrusions protruding from the inner diameter, and the inner diameter of the tip of the inner diameter side protrusion is larger than the outer skin inner diameter of the electric wire and smaller than the outer outer diameter of the electric wire Electric wire take-out structure characterized by being a ring. The wire take-out structure according to claim 1 or 2,
The tongue ring-shaped retaining ring has a dimension from the tip of the tongue-shaped protrusion to the center of the tongue-shaped projection retaining ring larger than the radius of the inner diameter of the second cylindrical concave portion, and the outer diameter section. A retaining ring with tongue-like projections, wherein the difference between the maximum outer diameter size (not including the tongue-like projections) and the inner diameter of the second cylindrical concave portion is smaller than the projecting dimension of the tongue-like projections. Characteristic wire take-out structure. It is an electric wire taking-out structure as described in any one of Claims 1 thru | or 3,
An electric wire take-out structure, wherein the electric wire is a multi-core shielded electric wire in which an inner electric wire and a shielded wire are covered with the outer skin.

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